1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007-2020 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
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10 | * |
9 | * |
11 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
12 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
13 | * |
12 | * |
14 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
16 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
17 | * with the distribution. |
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18 | * |
16 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | * Alternatively, the contents of this file may be used under the terms of |
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29 | * the GNU General Public License ("GPL") version 2 or any later version, |
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30 | * in which case the provisions of the GPL are applicable instead of |
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31 | * the above. If you wish to allow the use of your version of this file |
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32 | * only under the terms of the GPL and not to allow others to use your |
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33 | * version of this file under the BSD license, indicate your decision |
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34 | * by deleting the provisions above and replace them with the notice |
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35 | * and other provisions required by the GPL. If you do not delete the |
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36 | * provisions above, a recipient may use your version of this file under |
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37 | * either the BSD or the GPL. |
30 | */ |
38 | */ |
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39 | |
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40 | /* this big block deduces configuration from config.h */ |
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41 | #ifndef EV_STANDALONE |
31 | #if EV_USE_CONFIG_H |
42 | # ifdef EV_CONFIG_H |
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43 | # include EV_CONFIG_H |
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44 | # else |
32 | # include "config.h" |
45 | # include "config.h" |
33 | #endif |
46 | # endif |
34 | |
47 | |
35 | #include <math.h> |
48 | # if HAVE_FLOOR |
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49 | # ifndef EV_USE_FLOOR |
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50 | # define EV_USE_FLOOR 1 |
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51 | # endif |
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52 | # endif |
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53 | |
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54 | # if HAVE_CLOCK_SYSCALL |
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55 | # ifndef EV_USE_CLOCK_SYSCALL |
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56 | # define EV_USE_CLOCK_SYSCALL 1 |
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57 | # ifndef EV_USE_REALTIME |
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58 | # define EV_USE_REALTIME 0 |
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59 | # endif |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 1 |
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62 | # endif |
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63 | # endif |
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64 | # elif !defined EV_USE_CLOCK_SYSCALL |
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65 | # define EV_USE_CLOCK_SYSCALL 0 |
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66 | # endif |
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67 | |
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68 | # if HAVE_CLOCK_GETTIME |
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69 | # ifndef EV_USE_MONOTONIC |
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70 | # define EV_USE_MONOTONIC 1 |
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71 | # endif |
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72 | # ifndef EV_USE_REALTIME |
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73 | # define EV_USE_REALTIME 0 |
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74 | # endif |
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75 | # else |
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76 | # ifndef EV_USE_MONOTONIC |
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77 | # define EV_USE_MONOTONIC 0 |
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78 | # endif |
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79 | # ifndef EV_USE_REALTIME |
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80 | # define EV_USE_REALTIME 0 |
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81 | # endif |
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82 | # endif |
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83 | |
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84 | # if HAVE_NANOSLEEP |
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85 | # ifndef EV_USE_NANOSLEEP |
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86 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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87 | # endif |
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88 | # else |
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89 | # undef EV_USE_NANOSLEEP |
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90 | # define EV_USE_NANOSLEEP 0 |
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91 | # endif |
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92 | |
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93 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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94 | # ifndef EV_USE_SELECT |
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95 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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96 | # endif |
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97 | # else |
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98 | # undef EV_USE_SELECT |
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99 | # define EV_USE_SELECT 0 |
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100 | # endif |
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101 | |
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102 | # if HAVE_POLL && HAVE_POLL_H |
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103 | # ifndef EV_USE_POLL |
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104 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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105 | # endif |
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106 | # else |
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107 | # undef EV_USE_POLL |
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108 | # define EV_USE_POLL 0 |
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109 | # endif |
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110 | |
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111 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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112 | # ifndef EV_USE_EPOLL |
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113 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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114 | # endif |
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115 | # else |
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116 | # undef EV_USE_EPOLL |
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117 | # define EV_USE_EPOLL 0 |
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118 | # endif |
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119 | |
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120 | # if HAVE_LINUX_AIO_ABI_H |
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121 | # ifndef EV_USE_LINUXAIO |
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122 | # define EV_USE_LINUXAIO 0 /* was: EV_FEATURE_BACKENDS, always off by default */ |
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123 | # endif |
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124 | # else |
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125 | # undef EV_USE_LINUXAIO |
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126 | # define EV_USE_LINUXAIO 0 |
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127 | # endif |
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128 | |
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129 | # if HAVE_LINUX_FS_H && HAVE_SYS_TIMERFD_H && HAVE_KERNEL_RWF_T |
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130 | # ifndef EV_USE_IOURING |
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131 | # define EV_USE_IOURING EV_FEATURE_BACKENDS |
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132 | # endif |
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133 | # else |
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134 | # undef EV_USE_IOURING |
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135 | # define EV_USE_IOURING 0 |
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136 | # endif |
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137 | |
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138 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H |
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139 | # ifndef EV_USE_KQUEUE |
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140 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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141 | # endif |
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142 | # else |
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143 | # undef EV_USE_KQUEUE |
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144 | # define EV_USE_KQUEUE 0 |
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145 | # endif |
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146 | |
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147 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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148 | # ifndef EV_USE_PORT |
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149 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
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150 | # endif |
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151 | # else |
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152 | # undef EV_USE_PORT |
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153 | # define EV_USE_PORT 0 |
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154 | # endif |
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155 | |
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156 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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157 | # ifndef EV_USE_INOTIFY |
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158 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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159 | # endif |
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160 | # else |
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161 | # undef EV_USE_INOTIFY |
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162 | # define EV_USE_INOTIFY 0 |
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163 | # endif |
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164 | |
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165 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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166 | # ifndef EV_USE_SIGNALFD |
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167 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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168 | # endif |
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169 | # else |
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170 | # undef EV_USE_SIGNALFD |
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171 | # define EV_USE_SIGNALFD 0 |
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172 | # endif |
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173 | |
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174 | # if HAVE_EVENTFD |
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175 | # ifndef EV_USE_EVENTFD |
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176 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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177 | # endif |
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178 | # else |
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179 | # undef EV_USE_EVENTFD |
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180 | # define EV_USE_EVENTFD 0 |
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181 | # endif |
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182 | |
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183 | # if HAVE_SYS_TIMERFD_H |
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184 | # ifndef EV_USE_TIMERFD |
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185 | # define EV_USE_TIMERFD EV_FEATURE_OS |
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186 | # endif |
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187 | # else |
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188 | # undef EV_USE_TIMERFD |
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189 | # define EV_USE_TIMERFD 0 |
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190 | # endif |
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191 | |
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192 | #endif |
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193 | |
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194 | /* OS X, in its infinite idiocy, actually HARDCODES |
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195 | * a limit of 1024 into their select. Where people have brains, |
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196 | * OS X engineers apparently have a vacuum. Or maybe they were |
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197 | * ordered to have a vacuum, or they do anything for money. |
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198 | * This might help. Or not. |
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199 | * Note that this must be defined early, as other include files |
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200 | * will rely on this define as well. |
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201 | */ |
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202 | #define _DARWIN_UNLIMITED_SELECT 1 |
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203 | |
36 | #include <stdlib.h> |
204 | #include <stdlib.h> |
37 | #include <unistd.h> |
205 | #include <string.h> |
38 | #include <fcntl.h> |
206 | #include <fcntl.h> |
39 | #include <signal.h> |
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40 | #include <stddef.h> |
207 | #include <stddef.h> |
41 | |
208 | |
42 | #include <stdio.h> |
209 | #include <stdio.h> |
43 | |
210 | |
44 | #include <assert.h> |
211 | #include <assert.h> |
45 | #include <errno.h> |
212 | #include <errno.h> |
46 | #include <sys/types.h> |
213 | #include <sys/types.h> |
47 | #include <sys/wait.h> |
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48 | #include <sys/time.h> |
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49 | #include <time.h> |
214 | #include <time.h> |
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215 | #include <limits.h> |
50 | |
216 | |
51 | /**/ |
217 | #include <signal.h> |
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218 | |
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219 | #ifdef EV_H |
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220 | # include EV_H |
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221 | #else |
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222 | # include "ev.h" |
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223 | #endif |
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224 | |
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225 | #if EV_NO_THREADS |
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226 | # undef EV_NO_SMP |
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227 | # define EV_NO_SMP 1 |
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228 | # undef ECB_NO_THREADS |
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229 | # define ECB_NO_THREADS 1 |
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230 | #endif |
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231 | #if EV_NO_SMP |
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232 | # undef EV_NO_SMP |
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233 | # define ECB_NO_SMP 1 |
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234 | #endif |
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235 | |
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236 | #ifndef _WIN32 |
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237 | # include <sys/time.h> |
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238 | # include <sys/wait.h> |
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239 | # include <unistd.h> |
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240 | #else |
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241 | # include <io.h> |
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242 | # define WIN32_LEAN_AND_MEAN |
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243 | # include <winsock2.h> |
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244 | # include <windows.h> |
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245 | # ifndef EV_SELECT_IS_WINSOCKET |
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246 | # define EV_SELECT_IS_WINSOCKET 1 |
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247 | # endif |
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248 | # undef EV_AVOID_STDIO |
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249 | #endif |
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250 | |
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251 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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252 | |
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253 | /* try to deduce the maximum number of signals on this platform */ |
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254 | #if defined EV_NSIG |
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255 | /* use what's provided */ |
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256 | #elif defined NSIG |
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257 | # define EV_NSIG (NSIG) |
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258 | #elif defined _NSIG |
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259 | # define EV_NSIG (_NSIG) |
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260 | #elif defined SIGMAX |
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261 | # define EV_NSIG (SIGMAX+1) |
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262 | #elif defined SIG_MAX |
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263 | # define EV_NSIG (SIG_MAX+1) |
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264 | #elif defined _SIG_MAX |
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265 | # define EV_NSIG (_SIG_MAX+1) |
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266 | #elif defined MAXSIG |
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267 | # define EV_NSIG (MAXSIG+1) |
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268 | #elif defined MAX_SIG |
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269 | # define EV_NSIG (MAX_SIG+1) |
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270 | #elif defined SIGARRAYSIZE |
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271 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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272 | #elif defined _sys_nsig |
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273 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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274 | #else |
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275 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
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276 | #endif |
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277 | |
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278 | #ifndef EV_USE_FLOOR |
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279 | # define EV_USE_FLOOR 0 |
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280 | #endif |
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281 | |
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282 | #ifndef EV_USE_CLOCK_SYSCALL |
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283 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
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284 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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285 | # else |
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286 | # define EV_USE_CLOCK_SYSCALL 0 |
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287 | # endif |
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288 | #endif |
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289 | |
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290 | #if !(_POSIX_TIMERS > 0) |
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291 | # ifndef EV_USE_MONOTONIC |
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292 | # define EV_USE_MONOTONIC 0 |
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293 | # endif |
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294 | # ifndef EV_USE_REALTIME |
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295 | # define EV_USE_REALTIME 0 |
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296 | # endif |
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297 | #endif |
52 | |
298 | |
53 | #ifndef EV_USE_MONOTONIC |
299 | #ifndef EV_USE_MONOTONIC |
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300 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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301 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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302 | # else |
54 | # define EV_USE_MONOTONIC 1 |
303 | # define EV_USE_MONOTONIC 0 |
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304 | # endif |
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305 | #endif |
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306 | |
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307 | #ifndef EV_USE_REALTIME |
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308 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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309 | #endif |
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310 | |
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311 | #ifndef EV_USE_NANOSLEEP |
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312 | # if _POSIX_C_SOURCE >= 199309L |
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313 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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314 | # else |
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315 | # define EV_USE_NANOSLEEP 0 |
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316 | # endif |
55 | #endif |
317 | #endif |
56 | |
318 | |
57 | #ifndef EV_USE_SELECT |
319 | #ifndef EV_USE_SELECT |
58 | # define EV_USE_SELECT 1 |
320 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
59 | #endif |
321 | #endif |
60 | |
322 | |
61 | #ifndef EV_USE_POLL |
323 | #ifndef EV_USE_POLL |
62 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
324 | # ifdef _WIN32 |
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325 | # define EV_USE_POLL 0 |
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326 | # else |
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327 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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328 | # endif |
63 | #endif |
329 | #endif |
64 | |
330 | |
65 | #ifndef EV_USE_EPOLL |
331 | #ifndef EV_USE_EPOLL |
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332 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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333 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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334 | # else |
66 | # define EV_USE_EPOLL 0 |
335 | # define EV_USE_EPOLL 0 |
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336 | # endif |
67 | #endif |
337 | #endif |
68 | |
338 | |
69 | #ifndef EV_USE_KQUEUE |
339 | #ifndef EV_USE_KQUEUE |
70 | # define EV_USE_KQUEUE 0 |
340 | # define EV_USE_KQUEUE 0 |
71 | #endif |
341 | #endif |
72 | |
342 | |
73 | #ifndef EV_USE_REALTIME |
343 | #ifndef EV_USE_PORT |
74 | # define EV_USE_REALTIME 1 |
344 | # define EV_USE_PORT 0 |
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345 | #endif |
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346 | |
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347 | #ifndef EV_USE_LINUXAIO |
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348 | # if __linux /* libev currently assumes linux/aio_abi.h is always available on linux */ |
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349 | # define EV_USE_LINUXAIO 0 /* was: 1, always off by default */ |
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350 | # else |
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351 | # define EV_USE_LINUXAIO 0 |
75 | #endif |
352 | # endif |
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353 | #endif |
76 | |
354 | |
77 | /**/ |
355 | #ifndef EV_USE_IOURING |
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356 | # if __linux /* later checks might disable again */ |
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357 | # define EV_USE_IOURING 1 |
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358 | # else |
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359 | # define EV_USE_IOURING 0 |
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360 | # endif |
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361 | #endif |
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362 | |
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363 | #ifndef EV_USE_INOTIFY |
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364 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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365 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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366 | # else |
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367 | # define EV_USE_INOTIFY 0 |
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368 | # endif |
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369 | #endif |
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370 | |
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371 | #ifndef EV_PID_HASHSIZE |
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372 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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373 | #endif |
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374 | |
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375 | #ifndef EV_INOTIFY_HASHSIZE |
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376 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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377 | #endif |
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378 | |
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379 | #ifndef EV_USE_EVENTFD |
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380 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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381 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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382 | # else |
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383 | # define EV_USE_EVENTFD 0 |
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384 | # endif |
|
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385 | #endif |
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386 | |
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387 | #ifndef EV_USE_SIGNALFD |
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388 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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389 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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390 | # else |
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391 | # define EV_USE_SIGNALFD 0 |
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392 | # endif |
|
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393 | #endif |
|
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394 | |
|
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395 | #ifndef EV_USE_TIMERFD |
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396 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 8)) |
|
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397 | # define EV_USE_TIMERFD EV_FEATURE_OS |
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398 | # else |
|
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399 | # define EV_USE_TIMERFD 0 |
|
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400 | # endif |
|
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401 | #endif |
|
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402 | |
|
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403 | #if 0 /* debugging */ |
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404 | # define EV_VERIFY 3 |
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405 | # define EV_USE_4HEAP 1 |
|
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406 | # define EV_HEAP_CACHE_AT 1 |
|
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407 | #endif |
|
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408 | |
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|
409 | #ifndef EV_VERIFY |
|
|
410 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
|
|
411 | #endif |
|
|
412 | |
|
|
413 | #ifndef EV_USE_4HEAP |
|
|
414 | # define EV_USE_4HEAP EV_FEATURE_DATA |
|
|
415 | #endif |
|
|
416 | |
|
|
417 | #ifndef EV_HEAP_CACHE_AT |
|
|
418 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
|
|
419 | #endif |
|
|
420 | |
|
|
421 | #ifdef __ANDROID__ |
|
|
422 | /* supposedly, android doesn't typedef fd_mask */ |
|
|
423 | # undef EV_USE_SELECT |
|
|
424 | # define EV_USE_SELECT 0 |
|
|
425 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
|
|
426 | # undef EV_USE_CLOCK_SYSCALL |
|
|
427 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
428 | #endif |
|
|
429 | |
|
|
430 | /* aix's poll.h seems to cause lots of trouble */ |
|
|
431 | #ifdef _AIX |
|
|
432 | /* AIX has a completely broken poll.h header */ |
|
|
433 | # undef EV_USE_POLL |
|
|
434 | # define EV_USE_POLL 0 |
|
|
435 | #endif |
|
|
436 | |
|
|
437 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
|
|
438 | /* which makes programs even slower. might work on other unices, too. */ |
|
|
439 | #if EV_USE_CLOCK_SYSCALL |
|
|
440 | # include <sys/syscall.h> |
|
|
441 | # ifdef SYS_clock_gettime |
|
|
442 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
|
|
443 | # undef EV_USE_MONOTONIC |
|
|
444 | # define EV_USE_MONOTONIC 1 |
|
|
445 | # define EV_NEED_SYSCALL 1 |
|
|
446 | # else |
|
|
447 | # undef EV_USE_CLOCK_SYSCALL |
|
|
448 | # define EV_USE_CLOCK_SYSCALL 0 |
|
|
449 | # endif |
|
|
450 | #endif |
|
|
451 | |
|
|
452 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
78 | |
453 | |
79 | #ifndef CLOCK_MONOTONIC |
454 | #ifndef CLOCK_MONOTONIC |
80 | # undef EV_USE_MONOTONIC |
455 | # undef EV_USE_MONOTONIC |
81 | # define EV_USE_MONOTONIC 0 |
456 | # define EV_USE_MONOTONIC 0 |
82 | #endif |
457 | #endif |
… | |
… | |
84 | #ifndef CLOCK_REALTIME |
459 | #ifndef CLOCK_REALTIME |
85 | # undef EV_USE_REALTIME |
460 | # undef EV_USE_REALTIME |
86 | # define EV_USE_REALTIME 0 |
461 | # define EV_USE_REALTIME 0 |
87 | #endif |
462 | #endif |
88 | |
463 | |
89 | /**/ |
464 | #if !EV_STAT_ENABLE |
|
|
465 | # undef EV_USE_INOTIFY |
|
|
466 | # define EV_USE_INOTIFY 0 |
|
|
467 | #endif |
90 | |
468 | |
91 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
469 | #if __linux && EV_USE_IOURING |
92 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
470 | # include <linux/version.h> |
93 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
471 | # if LINUX_VERSION_CODE < KERNEL_VERSION(4,14,0) |
94 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
472 | # undef EV_USE_IOURING |
|
|
473 | # define EV_USE_IOURING 0 |
|
|
474 | # endif |
|
|
475 | #endif |
95 | |
476 | |
96 | #include "ev.h" |
477 | #if !EV_USE_NANOSLEEP |
|
|
478 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
479 | # if !defined _WIN32 && !defined __hpux |
|
|
480 | # include <sys/select.h> |
|
|
481 | # endif |
|
|
482 | #endif |
97 | |
483 | |
98 | #if __GNUC__ >= 3 |
484 | #if EV_USE_LINUXAIO |
99 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
485 | # include <sys/syscall.h> |
100 | # define inline inline |
486 | # if SYS_io_getevents && EV_USE_EPOLL /* linuxaio backend requires epoll backend */ |
|
|
487 | # define EV_NEED_SYSCALL 1 |
|
|
488 | # else |
|
|
489 | # undef EV_USE_LINUXAIO |
|
|
490 | # define EV_USE_LINUXAIO 0 |
|
|
491 | # endif |
|
|
492 | #endif |
|
|
493 | |
|
|
494 | #if EV_USE_IOURING |
|
|
495 | # include <sys/syscall.h> |
|
|
496 | # if !SYS_io_uring_register && __linux && !__alpha |
|
|
497 | # define SYS_io_uring_setup 425 |
|
|
498 | # define SYS_io_uring_enter 426 |
|
|
499 | # define SYS_io_uring_register 427 |
|
|
500 | # endif |
|
|
501 | # if SYS_io_uring_setup && EV_USE_EPOLL /* iouring backend requires epoll backend */ |
|
|
502 | # define EV_NEED_SYSCALL 1 |
|
|
503 | # else |
|
|
504 | # undef EV_USE_IOURING |
|
|
505 | # define EV_USE_IOURING 0 |
|
|
506 | # endif |
|
|
507 | #endif |
|
|
508 | |
|
|
509 | #if EV_USE_INOTIFY |
|
|
510 | # include <sys/statfs.h> |
|
|
511 | # include <sys/inotify.h> |
|
|
512 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
513 | # ifndef IN_DONT_FOLLOW |
|
|
514 | # undef EV_USE_INOTIFY |
|
|
515 | # define EV_USE_INOTIFY 0 |
|
|
516 | # endif |
|
|
517 | #endif |
|
|
518 | |
|
|
519 | #if EV_USE_EVENTFD |
|
|
520 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
|
|
521 | # include <stdint.h> |
|
|
522 | # ifndef EFD_NONBLOCK |
|
|
523 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
524 | # endif |
|
|
525 | # ifndef EFD_CLOEXEC |
|
|
526 | # ifdef O_CLOEXEC |
|
|
527 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
528 | # else |
|
|
529 | # define EFD_CLOEXEC 02000000 |
|
|
530 | # endif |
|
|
531 | # endif |
|
|
532 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
533 | #endif |
|
|
534 | |
|
|
535 | #if EV_USE_SIGNALFD |
|
|
536 | /* our minimum requirement is glibc 2.7 which has the stub, but not the full header */ |
|
|
537 | # include <stdint.h> |
|
|
538 | # ifndef SFD_NONBLOCK |
|
|
539 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
540 | # endif |
|
|
541 | # ifndef SFD_CLOEXEC |
|
|
542 | # ifdef O_CLOEXEC |
|
|
543 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
544 | # else |
|
|
545 | # define SFD_CLOEXEC 02000000 |
|
|
546 | # endif |
|
|
547 | # endif |
|
|
548 | EV_CPP (extern "C") int (signalfd) (int fd, const sigset_t *mask, int flags); |
|
|
549 | |
|
|
550 | struct signalfd_siginfo |
|
|
551 | { |
|
|
552 | uint32_t ssi_signo; |
|
|
553 | char pad[128 - sizeof (uint32_t)]; |
|
|
554 | }; |
|
|
555 | #endif |
|
|
556 | |
|
|
557 | /* for timerfd, libev core requires TFD_TIMER_CANCEL_ON_SET &c */ |
|
|
558 | #if EV_USE_TIMERFD |
|
|
559 | # include <sys/timerfd.h> |
|
|
560 | /* timerfd is only used for periodics */ |
|
|
561 | # if !(defined (TFD_TIMER_CANCEL_ON_SET) && defined (TFD_CLOEXEC) && defined (TFD_NONBLOCK)) || !EV_PERIODIC_ENABLE |
|
|
562 | # undef EV_USE_TIMERFD |
|
|
563 | # define EV_USE_TIMERFD 0 |
|
|
564 | # endif |
|
|
565 | #endif |
|
|
566 | |
|
|
567 | /*****************************************************************************/ |
|
|
568 | |
|
|
569 | #if EV_VERIFY >= 3 |
|
|
570 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
101 | #else |
571 | #else |
102 | # define expect(expr,value) (expr) |
572 | # define EV_FREQUENT_CHECK do { } while (0) |
103 | # define inline static |
573 | #endif |
|
|
574 | |
|
|
575 | /* |
|
|
576 | * This is used to work around floating point rounding problems. |
|
|
577 | * This value is good at least till the year 4000. |
|
|
578 | */ |
|
|
579 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
580 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
|
|
581 | |
|
|
582 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
|
|
583 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
584 | #define MAX_BLOCKTIME2 1500001.07 /* same, but when timerfd is used to detect jumps, also safe delay to not overflow */ |
|
|
585 | |
|
|
586 | /* find a portable timestamp that is "always" in the future but fits into time_t. |
|
|
587 | * this is quite hard, and we are mostly guessing - we handle 32 bit signed/unsigned time_t, |
|
|
588 | * and sizes larger than 32 bit, and maybe the unlikely floating point time_t */ |
|
|
589 | #define EV_TSTAMP_HUGE \ |
|
|
590 | (sizeof (time_t) >= 8 ? 10000000000000. \ |
|
|
591 | : 0 < (time_t)4294967295 ? 4294967295. \ |
|
|
592 | : 2147483647.) \ |
|
|
593 | |
|
|
594 | #ifndef EV_TS_CONST |
|
|
595 | # define EV_TS_CONST(nv) nv |
|
|
596 | # define EV_TS_TO_MSEC(a) a * 1e3 + 0.9999 |
|
|
597 | # define EV_TS_FROM_USEC(us) us * 1e-6 |
|
|
598 | # define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
599 | # define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
|
|
600 | # define EV_TV_GET(tv) ((tv).tv_sec + (tv).tv_usec * 1e-6) |
|
|
601 | # define EV_TS_GET(ts) ((ts).tv_sec + (ts).tv_nsec * 1e-9) |
|
|
602 | #endif |
|
|
603 | |
|
|
604 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
605 | /* ECB.H BEGIN */ |
|
|
606 | /* |
|
|
607 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
608 | * |
|
|
609 | * Copyright (©) 2009-2015,2018-2020 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
610 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
611 | * All rights reserved. |
|
|
612 | * |
|
|
613 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
614 | * tion, are permitted provided that the following conditions are met: |
|
|
615 | * |
|
|
616 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
617 | * this list of conditions and the following disclaimer. |
|
|
618 | * |
|
|
619 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
620 | * notice, this list of conditions and the following disclaimer in the |
|
|
621 | * documentation and/or other materials provided with the distribution. |
|
|
622 | * |
|
|
623 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
624 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
625 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
626 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
627 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
628 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
629 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
630 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
631 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
632 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
633 | * |
|
|
634 | * Alternatively, the contents of this file may be used under the terms of |
|
|
635 | * the GNU General Public License ("GPL") version 2 or any later version, |
|
|
636 | * in which case the provisions of the GPL are applicable instead of |
|
|
637 | * the above. If you wish to allow the use of your version of this file |
|
|
638 | * only under the terms of the GPL and not to allow others to use your |
|
|
639 | * version of this file under the BSD license, indicate your decision |
|
|
640 | * by deleting the provisions above and replace them with the notice |
|
|
641 | * and other provisions required by the GPL. If you do not delete the |
|
|
642 | * provisions above, a recipient may use your version of this file under |
|
|
643 | * either the BSD or the GPL. |
|
|
644 | */ |
|
|
645 | |
|
|
646 | #ifndef ECB_H |
|
|
647 | #define ECB_H |
|
|
648 | |
|
|
649 | /* 16 bits major, 16 bits minor */ |
|
|
650 | #define ECB_VERSION 0x00010008 |
|
|
651 | |
|
|
652 | #include <string.h> /* for memcpy */ |
|
|
653 | |
|
|
654 | #if defined (_WIN32) && !defined (__MINGW32__) |
|
|
655 | typedef signed char int8_t; |
|
|
656 | typedef unsigned char uint8_t; |
|
|
657 | typedef signed char int_fast8_t; |
|
|
658 | typedef unsigned char uint_fast8_t; |
|
|
659 | typedef signed short int16_t; |
|
|
660 | typedef unsigned short uint16_t; |
|
|
661 | typedef signed int int_fast16_t; |
|
|
662 | typedef unsigned int uint_fast16_t; |
|
|
663 | typedef signed int int32_t; |
|
|
664 | typedef unsigned int uint32_t; |
|
|
665 | typedef signed int int_fast32_t; |
|
|
666 | typedef unsigned int uint_fast32_t; |
|
|
667 | #if __GNUC__ |
|
|
668 | typedef signed long long int64_t; |
|
|
669 | typedef unsigned long long uint64_t; |
|
|
670 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
671 | typedef signed __int64 int64_t; |
|
|
672 | typedef unsigned __int64 uint64_t; |
104 | #endif |
673 | #endif |
|
|
674 | typedef int64_t int_fast64_t; |
|
|
675 | typedef uint64_t uint_fast64_t; |
|
|
676 | #ifdef _WIN64 |
|
|
677 | #define ECB_PTRSIZE 8 |
|
|
678 | typedef uint64_t uintptr_t; |
|
|
679 | typedef int64_t intptr_t; |
|
|
680 | #else |
|
|
681 | #define ECB_PTRSIZE 4 |
|
|
682 | typedef uint32_t uintptr_t; |
|
|
683 | typedef int32_t intptr_t; |
|
|
684 | #endif |
|
|
685 | #else |
|
|
686 | #include <inttypes.h> |
|
|
687 | #if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU |
|
|
688 | #define ECB_PTRSIZE 8 |
|
|
689 | #else |
|
|
690 | #define ECB_PTRSIZE 4 |
|
|
691 | #endif |
|
|
692 | #endif |
105 | |
693 | |
106 | #define expect_false(expr) expect ((expr) != 0, 0) |
694 | #define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__) |
107 | #define expect_true(expr) expect ((expr) != 0, 1) |
695 | #define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64) |
108 | |
696 | |
109 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
697 | #ifndef ECB_OPTIMIZE_SIZE |
110 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
698 | #if __OPTIMIZE_SIZE__ |
|
|
699 | #define ECB_OPTIMIZE_SIZE 1 |
|
|
700 | #else |
|
|
701 | #define ECB_OPTIMIZE_SIZE 0 |
|
|
702 | #endif |
|
|
703 | #endif |
111 | |
704 | |
112 | typedef struct ev_watcher *W; |
705 | /* work around x32 idiocy by defining proper macros */ |
113 | typedef struct ev_watcher_list *WL; |
706 | #if ECB_GCC_AMD64 || ECB_MSVC_AMD64 |
114 | typedef struct ev_watcher_time *WT; |
707 | #if _ILP32 |
|
|
708 | #define ECB_AMD64_X32 1 |
|
|
709 | #else |
|
|
710 | #define ECB_AMD64 1 |
|
|
711 | #endif |
|
|
712 | #endif |
115 | |
713 | |
116 | static ev_tstamp now_floor, now, diff; /* monotonic clock */ |
714 | /* many compilers define _GNUC_ to some versions but then only implement |
117 | ev_tstamp ev_now; |
715 | * what their idiot authors think are the "more important" extensions, |
118 | int ev_method; |
716 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
717 | * or so. |
|
|
718 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
719 | * an issue with that they should have done it right in the first place. |
|
|
720 | */ |
|
|
721 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
722 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
723 | #else |
|
|
724 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
725 | #endif |
119 | |
726 | |
120 | static int have_monotonic; /* runtime */ |
727 | #define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor))) |
121 | |
728 | |
122 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
729 | #if __clang__ && defined __has_builtin |
123 | static void (*method_modify)(int fd, int oev, int nev); |
730 | #define ECB_CLANG_BUILTIN(x) __has_builtin (x) |
124 | static void (*method_poll)(ev_tstamp timeout); |
731 | #else |
|
|
732 | #define ECB_CLANG_BUILTIN(x) 0 |
|
|
733 | #endif |
|
|
734 | |
|
|
735 | #if __clang__ && defined __has_extension |
|
|
736 | #define ECB_CLANG_EXTENSION(x) __has_extension (x) |
|
|
737 | #else |
|
|
738 | #define ECB_CLANG_EXTENSION(x) 0 |
|
|
739 | #endif |
|
|
740 | |
|
|
741 | #define ECB_CPP (__cplusplus+0) |
|
|
742 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
743 | #define ECB_CPP14 (__cplusplus >= 201402L) |
|
|
744 | #define ECB_CPP17 (__cplusplus >= 201703L) |
|
|
745 | |
|
|
746 | #if ECB_CPP |
|
|
747 | #define ECB_C 0 |
|
|
748 | #define ECB_STDC_VERSION 0 |
|
|
749 | #else |
|
|
750 | #define ECB_C 1 |
|
|
751 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
752 | #endif |
|
|
753 | |
|
|
754 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
755 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
756 | #define ECB_C17 (ECB_STDC_VERSION >= 201710L) |
|
|
757 | |
|
|
758 | #if ECB_CPP |
|
|
759 | #define ECB_EXTERN_C extern "C" |
|
|
760 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
761 | #define ECB_EXTERN_C_END } |
|
|
762 | #else |
|
|
763 | #define ECB_EXTERN_C extern |
|
|
764 | #define ECB_EXTERN_C_BEG |
|
|
765 | #define ECB_EXTERN_C_END |
|
|
766 | #endif |
125 | |
767 | |
126 | /*****************************************************************************/ |
768 | /*****************************************************************************/ |
127 | |
769 | |
|
|
770 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
771 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
772 | |
|
|
773 | #if ECB_NO_THREADS |
|
|
774 | #define ECB_NO_SMP 1 |
|
|
775 | #endif |
|
|
776 | |
|
|
777 | #if ECB_NO_SMP |
|
|
778 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
779 | #endif |
|
|
780 | |
|
|
781 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */ |
|
|
782 | #if __xlC__ && ECB_CPP |
|
|
783 | #include <builtins.h> |
|
|
784 | #endif |
|
|
785 | |
|
|
786 | #if 1400 <= _MSC_VER |
|
|
787 | #include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */ |
|
|
788 | #endif |
|
|
789 | |
|
|
790 | #ifndef ECB_MEMORY_FENCE |
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|
791 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
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|
792 | #define ECB_MEMORY_FENCE_RELAXED __asm__ __volatile__ ("" : : : "memory") |
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|
793 | #if __i386 || __i386__ |
|
|
794 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
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|
795 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
796 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
|
|
797 | #elif ECB_GCC_AMD64 |
|
|
798 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
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|
799 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
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|
800 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("" : : : "memory") |
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|
801 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
802 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
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|
803 | #elif defined __ARM_ARCH_2__ \ |
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|
804 | || defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \ |
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|
805 | || defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \ |
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|
806 | || defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \ |
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|
807 | || defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \ |
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|
808 | || defined __ARM_ARCH_5TEJ__ |
|
|
809 | /* should not need any, unless running old code on newer cpu - arm doesn't support that */ |
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|
810 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
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|
811 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \ |
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|
812 | || defined __ARM_ARCH_6T2__ |
|
|
813 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
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|
814 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
815 | || defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__ |
|
|
816 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
817 | #elif __aarch64__ |
|
|
818 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
819 | #elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8) |
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|
820 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
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|
821 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
822 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
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|
823 | #elif defined __s390__ || defined __s390x__ |
|
|
824 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
825 | #elif defined __mips__ |
|
|
826 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
827 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
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|
828 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
829 | #elif defined __alpha__ |
|
|
830 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
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|
831 | #elif defined __hppa__ |
|
|
832 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
833 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
834 | #elif defined __ia64__ |
|
|
835 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
836 | #elif defined __m68k__ |
|
|
837 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
838 | #elif defined __m88k__ |
|
|
839 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
840 | #elif defined __sh__ |
|
|
841 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
842 | #endif |
|
|
843 | #endif |
|
|
844 | #endif |
|
|
845 | |
|
|
846 | #ifndef ECB_MEMORY_FENCE |
|
|
847 | #if ECB_GCC_VERSION(4,7) |
|
|
848 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
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|
849 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
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|
850 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
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|
851 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
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|
852 | #define ECB_MEMORY_FENCE_RELAXED __atomic_thread_fence (__ATOMIC_RELAXED) |
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|
853 | |
|
|
854 | #elif ECB_CLANG_EXTENSION(c_atomic) |
|
|
855 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
856 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
857 | #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
858 | #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
859 | #define ECB_MEMORY_FENCE_RELAXED __c11_atomic_thread_fence (__ATOMIC_RELAXED) |
|
|
860 | |
|
|
861 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
862 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
863 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
864 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
865 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
866 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
867 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
868 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
869 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
870 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
871 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
872 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
873 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
874 | #elif defined _WIN32 |
|
|
875 | #include <WinNT.h> |
|
|
876 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
877 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
878 | #include <mbarrier.h> |
|
|
879 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
880 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_acq_barrier () |
|
|
881 | #define ECB_MEMORY_FENCE_RELEASE __machine_rel_barrier () |
|
|
882 | #define ECB_MEMORY_FENCE_RELAXED __compiler_barrier () |
|
|
883 | #elif __xlC__ |
|
|
884 | #define ECB_MEMORY_FENCE __sync () |
|
|
885 | #endif |
|
|
886 | #endif |
|
|
887 | |
|
|
888 | #ifndef ECB_MEMORY_FENCE |
|
|
889 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
890 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
891 | /* not just C11 atomics and atomic accesses */ |
|
|
892 | #include <stdatomic.h> |
|
|
893 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
894 | #define ECB_MEMORY_FENCE_ACQUIRE atomic_thread_fence (memory_order_acquire) |
|
|
895 | #define ECB_MEMORY_FENCE_RELEASE atomic_thread_fence (memory_order_release) |
|
|
896 | #endif |
|
|
897 | #endif |
|
|
898 | |
|
|
899 | #ifndef ECB_MEMORY_FENCE |
|
|
900 | #if !ECB_AVOID_PTHREADS |
|
|
901 | /* |
|
|
902 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
903 | * or failure to find pthread.h, then you should implement |
|
|
904 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
905 | * OR provide pthread.h and link against the posix thread library |
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|
906 | * of your system. |
|
|
907 | */ |
|
|
908 | #include <pthread.h> |
|
|
909 | #define ECB_NEEDS_PTHREADS 1 |
|
|
910 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
911 | |
|
|
912 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
913 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
914 | #endif |
|
|
915 | #endif |
|
|
916 | |
|
|
917 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
918 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
919 | #endif |
|
|
920 | |
|
|
921 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
922 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
923 | #endif |
|
|
924 | |
|
|
925 | #if !defined ECB_MEMORY_FENCE_RELAXED && defined ECB_MEMORY_FENCE |
|
|
926 | #define ECB_MEMORY_FENCE_RELAXED ECB_MEMORY_FENCE /* very heavy-handed */ |
|
|
927 | #endif |
|
|
928 | |
|
|
929 | /*****************************************************************************/ |
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|
930 | |
|
|
931 | #if ECB_CPP |
|
|
932 | #define ecb_inline static inline |
|
|
933 | #elif ECB_GCC_VERSION(2,5) |
|
|
934 | #define ecb_inline static __inline__ |
|
|
935 | #elif ECB_C99 |
|
|
936 | #define ecb_inline static inline |
|
|
937 | #else |
|
|
938 | #define ecb_inline static |
|
|
939 | #endif |
|
|
940 | |
|
|
941 | #if ECB_GCC_VERSION(3,3) |
|
|
942 | #define ecb_restrict __restrict__ |
|
|
943 | #elif ECB_C99 |
|
|
944 | #define ecb_restrict restrict |
|
|
945 | #else |
|
|
946 | #define ecb_restrict |
|
|
947 | #endif |
|
|
948 | |
|
|
949 | typedef int ecb_bool; |
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|
950 | |
|
|
951 | #define ECB_CONCAT_(a, b) a ## b |
|
|
952 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
953 | #define ECB_STRINGIFY_(a) # a |
|
|
954 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
955 | #define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr)) |
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956 | |
|
|
957 | #define ecb_function_ ecb_inline |
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|
958 | |
|
|
959 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8) |
|
|
960 | #define ecb_attribute(attrlist) __attribute__ (attrlist) |
|
|
961 | #else |
|
|
962 | #define ecb_attribute(attrlist) |
|
|
963 | #endif |
|
|
964 | |
|
|
965 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p) |
|
|
966 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
967 | #else |
|
|
968 | /* possible C11 impl for integral types |
|
|
969 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
970 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
971 | |
|
|
972 | #define ecb_is_constant(expr) 0 |
|
|
973 | #endif |
|
|
974 | |
|
|
975 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect) |
|
|
976 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
977 | #else |
|
|
978 | #define ecb_expect(expr,value) (expr) |
|
|
979 | #endif |
|
|
980 | |
|
|
981 | #if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch) |
|
|
982 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
983 | #else |
|
|
984 | #define ecb_prefetch(addr,rw,locality) |
|
|
985 | #endif |
|
|
986 | |
|
|
987 | /* no emulation for ecb_decltype */ |
|
|
988 | #if ECB_CPP11 |
|
|
989 | // older implementations might have problems with decltype(x)::type, work around it |
|
|
990 | template<class T> struct ecb_decltype_t { typedef T type; }; |
|
|
991 | #define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type |
|
|
992 | #elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8) |
|
|
993 | #define ecb_decltype(x) __typeof__ (x) |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | #if _MSC_VER >= 1300 |
|
|
997 | #define ecb_deprecated __declspec (deprecated) |
|
|
998 | #else |
|
|
999 | #define ecb_deprecated ecb_attribute ((__deprecated__)) |
|
|
1000 | #endif |
|
|
1001 | |
|
|
1002 | #if _MSC_VER >= 1500 |
|
|
1003 | #define ecb_deprecated_message(msg) __declspec (deprecated (msg)) |
|
|
1004 | #elif ECB_GCC_VERSION(4,5) |
|
|
1005 | #define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg)) |
|
|
1006 | #else |
|
|
1007 | #define ecb_deprecated_message(msg) ecb_deprecated |
|
|
1008 | #endif |
|
|
1009 | |
|
|
1010 | #if _MSC_VER >= 1400 |
|
|
1011 | #define ecb_noinline __declspec (noinline) |
|
|
1012 | #else |
|
|
1013 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
1014 | #endif |
|
|
1015 | |
|
|
1016 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
1017 | #define ecb_const ecb_attribute ((__const__)) |
|
|
1018 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
1019 | |
|
|
1020 | #if ECB_C11 || __IBMC_NORETURN |
|
|
1021 | /* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */ |
|
|
1022 | #define ecb_noreturn _Noreturn |
|
|
1023 | #elif ECB_CPP11 |
|
|
1024 | #define ecb_noreturn [[noreturn]] |
|
|
1025 | #elif _MSC_VER >= 1200 |
|
|
1026 | /* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */ |
|
|
1027 | #define ecb_noreturn __declspec (noreturn) |
|
|
1028 | #else |
|
|
1029 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
1030 | #endif |
|
|
1031 | |
|
|
1032 | #if ECB_GCC_VERSION(4,3) |
|
|
1033 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
1034 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
1035 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
1036 | #else |
|
|
1037 | #define ecb_artificial |
|
|
1038 | #define ecb_hot |
|
|
1039 | #define ecb_cold |
|
|
1040 | #endif |
|
|
1041 | |
|
|
1042 | /* put around conditional expressions if you are very sure that the */ |
|
|
1043 | /* expression is mostly true or mostly false. note that these return */ |
|
|
1044 | /* booleans, not the expression. */ |
|
|
1045 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
|
|
1046 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
1047 | /* for compatibility to the rest of the world */ |
|
|
1048 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
1049 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
1050 | |
|
|
1051 | /* count trailing zero bits and count # of one bits */ |
|
|
1052 | #if ECB_GCC_VERSION(3,4) \ |
|
|
1053 | || (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \ |
|
|
1054 | && ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \ |
|
|
1055 | && ECB_CLANG_BUILTIN(__builtin_popcount)) |
|
|
1056 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
1057 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
1058 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
1059 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
1060 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
1061 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
1062 | /* no popcountll */ |
|
|
1063 | #else |
|
|
1064 | ecb_function_ ecb_const int ecb_ctz32 (uint32_t x); |
|
|
1065 | ecb_function_ ecb_const int |
|
|
1066 | ecb_ctz32 (uint32_t x) |
|
|
1067 | { |
|
|
1068 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1069 | unsigned long r; |
|
|
1070 | _BitScanForward (&r, x); |
|
|
1071 | return (int)r; |
|
|
1072 | #else |
|
|
1073 | int r = 0; |
|
|
1074 | |
|
|
1075 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
1076 | |
|
|
1077 | #if ECB_branchless_on_i386 |
|
|
1078 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
1079 | r += !!(x & 0xcccccccc) << 1; |
|
|
1080 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
1081 | r += !!(x & 0xff00ff00) << 3; |
|
|
1082 | r += !!(x & 0xffff0000) << 4; |
|
|
1083 | #else |
|
|
1084 | if (x & 0xaaaaaaaa) r += 1; |
|
|
1085 | if (x & 0xcccccccc) r += 2; |
|
|
1086 | if (x & 0xf0f0f0f0) r += 4; |
|
|
1087 | if (x & 0xff00ff00) r += 8; |
|
|
1088 | if (x & 0xffff0000) r += 16; |
|
|
1089 | #endif |
|
|
1090 | |
|
|
1091 | return r; |
|
|
1092 | #endif |
|
|
1093 | } |
|
|
1094 | |
|
|
1095 | ecb_function_ ecb_const int ecb_ctz64 (uint64_t x); |
|
|
1096 | ecb_function_ ecb_const int |
|
|
1097 | ecb_ctz64 (uint64_t x) |
|
|
1098 | { |
|
|
1099 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1100 | unsigned long r; |
|
|
1101 | _BitScanForward64 (&r, x); |
|
|
1102 | return (int)r; |
|
|
1103 | #else |
|
|
1104 | int shift = x & 0xffffffff ? 0 : 32; |
|
|
1105 | return ecb_ctz32 (x >> shift) + shift; |
|
|
1106 | #endif |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | ecb_function_ ecb_const int ecb_popcount32 (uint32_t x); |
|
|
1110 | ecb_function_ ecb_const int |
|
|
1111 | ecb_popcount32 (uint32_t x) |
|
|
1112 | { |
|
|
1113 | x -= (x >> 1) & 0x55555555; |
|
|
1114 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
1115 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
1116 | x *= 0x01010101; |
|
|
1117 | |
|
|
1118 | return x >> 24; |
|
|
1119 | } |
|
|
1120 | |
|
|
1121 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x); |
|
|
1122 | ecb_function_ ecb_const int ecb_ld32 (uint32_t x) |
|
|
1123 | { |
|
|
1124 | #if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM) |
|
|
1125 | unsigned long r; |
|
|
1126 | _BitScanReverse (&r, x); |
|
|
1127 | return (int)r; |
|
|
1128 | #else |
|
|
1129 | int r = 0; |
|
|
1130 | |
|
|
1131 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
1132 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
1133 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
1134 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
1135 | if (x >> 1) { r += 1; } |
|
|
1136 | |
|
|
1137 | return r; |
|
|
1138 | #endif |
|
|
1139 | } |
|
|
1140 | |
|
|
1141 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x); |
|
|
1142 | ecb_function_ ecb_const int ecb_ld64 (uint64_t x) |
|
|
1143 | { |
|
|
1144 | #if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM) |
|
|
1145 | unsigned long r; |
|
|
1146 | _BitScanReverse64 (&r, x); |
|
|
1147 | return (int)r; |
|
|
1148 | #else |
|
|
1149 | int r = 0; |
|
|
1150 | |
|
|
1151 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
1152 | |
|
|
1153 | return r + ecb_ld32 (x); |
|
|
1154 | #endif |
|
|
1155 | } |
|
|
1156 | #endif |
|
|
1157 | |
|
|
1158 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x); |
|
|
1159 | ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
1160 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x); |
|
|
1161 | ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
1162 | |
|
|
1163 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x); |
|
|
1164 | ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x) |
|
|
1165 | { |
|
|
1166 | return ( (x * 0x0802U & 0x22110U) |
|
|
1167 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
1168 | } |
|
|
1169 | |
|
|
1170 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x); |
|
|
1171 | ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x) |
|
|
1172 | { |
|
|
1173 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
1174 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
1175 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
1176 | x = ( x >> 8 ) | ( x << 8); |
|
|
1177 | |
|
|
1178 | return x; |
|
|
1179 | } |
|
|
1180 | |
|
|
1181 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x); |
|
|
1182 | ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x) |
|
|
1183 | { |
|
|
1184 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
1185 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
1186 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
1187 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
1188 | x = ( x >> 16 ) | ( x << 16); |
|
|
1189 | |
|
|
1190 | return x; |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
1194 | /* so for this version we are lazy */ |
|
|
1195 | ecb_function_ ecb_const int ecb_popcount64 (uint64_t x); |
|
|
1196 | ecb_function_ ecb_const int |
|
|
1197 | ecb_popcount64 (uint64_t x) |
|
|
1198 | { |
|
|
1199 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
1200 | } |
|
|
1201 | |
|
|
1202 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count); |
|
|
1203 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count); |
|
|
1204 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count); |
|
|
1205 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count); |
|
|
1206 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count); |
|
|
1207 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count); |
|
|
1208 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count); |
|
|
1209 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count); |
|
|
1210 | |
|
|
1211 | ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
1212 | ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
1213 | ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
1214 | ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
1215 | ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
1216 | ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
1217 | ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
1218 | ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
1219 | |
|
|
1220 | #if ECB_CPP |
|
|
1221 | |
|
|
1222 | inline uint8_t ecb_ctz (uint8_t v) { return ecb_ctz32 (v); } |
|
|
1223 | inline uint16_t ecb_ctz (uint16_t v) { return ecb_ctz32 (v); } |
|
|
1224 | inline uint32_t ecb_ctz (uint32_t v) { return ecb_ctz32 (v); } |
|
|
1225 | inline uint64_t ecb_ctz (uint64_t v) { return ecb_ctz64 (v); } |
|
|
1226 | |
|
|
1227 | inline bool ecb_is_pot (uint8_t v) { return ecb_is_pot32 (v); } |
|
|
1228 | inline bool ecb_is_pot (uint16_t v) { return ecb_is_pot32 (v); } |
|
|
1229 | inline bool ecb_is_pot (uint32_t v) { return ecb_is_pot32 (v); } |
|
|
1230 | inline bool ecb_is_pot (uint64_t v) { return ecb_is_pot64 (v); } |
|
|
1231 | |
|
|
1232 | inline int ecb_ld (uint8_t v) { return ecb_ld32 (v); } |
|
|
1233 | inline int ecb_ld (uint16_t v) { return ecb_ld32 (v); } |
|
|
1234 | inline int ecb_ld (uint32_t v) { return ecb_ld32 (v); } |
|
|
1235 | inline int ecb_ld (uint64_t v) { return ecb_ld64 (v); } |
|
|
1236 | |
|
|
1237 | inline int ecb_popcount (uint8_t v) { return ecb_popcount32 (v); } |
|
|
1238 | inline int ecb_popcount (uint16_t v) { return ecb_popcount32 (v); } |
|
|
1239 | inline int ecb_popcount (uint32_t v) { return ecb_popcount32 (v); } |
|
|
1240 | inline int ecb_popcount (uint64_t v) { return ecb_popcount64 (v); } |
|
|
1241 | |
|
|
1242 | inline uint8_t ecb_bitrev (uint8_t v) { return ecb_bitrev8 (v); } |
|
|
1243 | inline uint16_t ecb_bitrev (uint16_t v) { return ecb_bitrev16 (v); } |
|
|
1244 | inline uint32_t ecb_bitrev (uint32_t v) { return ecb_bitrev32 (v); } |
|
|
1245 | |
|
|
1246 | inline uint8_t ecb_rotl (uint8_t v, unsigned int count) { return ecb_rotl8 (v, count); } |
|
|
1247 | inline uint16_t ecb_rotl (uint16_t v, unsigned int count) { return ecb_rotl16 (v, count); } |
|
|
1248 | inline uint32_t ecb_rotl (uint32_t v, unsigned int count) { return ecb_rotl32 (v, count); } |
|
|
1249 | inline uint64_t ecb_rotl (uint64_t v, unsigned int count) { return ecb_rotl64 (v, count); } |
|
|
1250 | |
|
|
1251 | inline uint8_t ecb_rotr (uint8_t v, unsigned int count) { return ecb_rotr8 (v, count); } |
|
|
1252 | inline uint16_t ecb_rotr (uint16_t v, unsigned int count) { return ecb_rotr16 (v, count); } |
|
|
1253 | inline uint32_t ecb_rotr (uint32_t v, unsigned int count) { return ecb_rotr32 (v, count); } |
|
|
1254 | inline uint64_t ecb_rotr (uint64_t v, unsigned int count) { return ecb_rotr64 (v, count); } |
|
|
1255 | |
|
|
1256 | #endif |
|
|
1257 | |
|
|
1258 | #if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64)) |
|
|
1259 | #if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16) |
|
|
1260 | #define ecb_bswap16(x) __builtin_bswap16 (x) |
|
|
1261 | #else |
|
|
1262 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
1263 | #endif |
|
|
1264 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
1265 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
1266 | #elif _MSC_VER |
|
|
1267 | #include <stdlib.h> |
|
|
1268 | #define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x))) |
|
|
1269 | #define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x))) |
|
|
1270 | #define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x))) |
|
|
1271 | #else |
|
|
1272 | ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x); |
|
|
1273 | ecb_function_ ecb_const uint16_t |
|
|
1274 | ecb_bswap16 (uint16_t x) |
|
|
1275 | { |
|
|
1276 | return ecb_rotl16 (x, 8); |
|
|
1277 | } |
|
|
1278 | |
|
|
1279 | ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x); |
|
|
1280 | ecb_function_ ecb_const uint32_t |
|
|
1281 | ecb_bswap32 (uint32_t x) |
|
|
1282 | { |
|
|
1283 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x); |
|
|
1287 | ecb_function_ ecb_const uint64_t |
|
|
1288 | ecb_bswap64 (uint64_t x) |
|
|
1289 | { |
|
|
1290 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
1291 | } |
|
|
1292 | #endif |
|
|
1293 | |
|
|
1294 | #if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable) |
|
|
1295 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1296 | #else |
|
|
1297 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1298 | ecb_inline ecb_noreturn void ecb_unreachable (void); |
|
|
1299 | ecb_inline ecb_noreturn void ecb_unreachable (void) { } |
|
|
1300 | #endif |
|
|
1301 | |
|
|
1302 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1303 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1304 | |
|
|
1305 | ecb_inline ecb_const uint32_t ecb_byteorder_helper (void); |
|
|
1306 | ecb_inline ecb_const uint32_t |
|
|
1307 | ecb_byteorder_helper (void) |
|
|
1308 | { |
|
|
1309 | /* the union code still generates code under pressure in gcc, */ |
|
|
1310 | /* but less than using pointers, and always seems to */ |
|
|
1311 | /* successfully return a constant. */ |
|
|
1312 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1313 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1314 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1315 | #if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \ |
|
|
1316 | || ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__) |
|
|
1317 | #define ECB_LITTLE_ENDIAN 1 |
|
|
1318 | return 0x44332211; |
|
|
1319 | #elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \ |
|
|
1320 | || ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__) |
|
|
1321 | #define ECB_BIG_ENDIAN 1 |
|
|
1322 | return 0x11223344; |
|
|
1323 | #else |
|
|
1324 | union |
|
|
1325 | { |
|
|
1326 | uint8_t c[4]; |
|
|
1327 | uint32_t u; |
|
|
1328 | } u = { 0x11, 0x22, 0x33, 0x44 }; |
|
|
1329 | return u.u; |
|
|
1330 | #endif |
|
|
1331 | } |
|
|
1332 | |
|
|
1333 | ecb_inline ecb_const ecb_bool ecb_big_endian (void); |
|
|
1334 | ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; } |
|
|
1335 | ecb_inline ecb_const ecb_bool ecb_little_endian (void); |
|
|
1336 | ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; } |
|
|
1337 | |
|
|
1338 | /*****************************************************************************/ |
|
|
1339 | /* unaligned load/store */ |
|
|
1340 | |
|
|
1341 | ecb_inline uint_fast16_t ecb_be_u16_to_host (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
1342 | ecb_inline uint_fast32_t ecb_be_u32_to_host (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
1343 | ecb_inline uint_fast64_t ecb_be_u64_to_host (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
1344 | |
|
|
1345 | ecb_inline uint_fast16_t ecb_le_u16_to_host (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
1346 | ecb_inline uint_fast32_t ecb_le_u32_to_host (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
1347 | ecb_inline uint_fast64_t ecb_le_u64_to_host (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
1348 | |
|
|
1349 | ecb_inline uint_fast16_t ecb_peek_u16_u (const void *ptr) { uint16_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1350 | ecb_inline uint_fast32_t ecb_peek_u32_u (const void *ptr) { uint32_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1351 | ecb_inline uint_fast64_t ecb_peek_u64_u (const void *ptr) { uint64_t v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1352 | |
|
|
1353 | ecb_inline uint_fast16_t ecb_peek_be_u16_u (const void *ptr) { return ecb_be_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
1354 | ecb_inline uint_fast32_t ecb_peek_be_u32_u (const void *ptr) { return ecb_be_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
1355 | ecb_inline uint_fast64_t ecb_peek_be_u64_u (const void *ptr) { return ecb_be_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
1356 | |
|
|
1357 | ecb_inline uint_fast16_t ecb_peek_le_u16_u (const void *ptr) { return ecb_le_u16_to_host (ecb_peek_u16_u (ptr)); } |
|
|
1358 | ecb_inline uint_fast32_t ecb_peek_le_u32_u (const void *ptr) { return ecb_le_u32_to_host (ecb_peek_u32_u (ptr)); } |
|
|
1359 | ecb_inline uint_fast64_t ecb_peek_le_u64_u (const void *ptr) { return ecb_le_u64_to_host (ecb_peek_u64_u (ptr)); } |
|
|
1360 | |
|
|
1361 | ecb_inline uint_fast16_t ecb_host_to_be_u16 (uint_fast16_t v) { return ecb_little_endian () ? ecb_bswap16 (v) : v; } |
|
|
1362 | ecb_inline uint_fast32_t ecb_host_to_be_u32 (uint_fast32_t v) { return ecb_little_endian () ? ecb_bswap32 (v) : v; } |
|
|
1363 | ecb_inline uint_fast64_t ecb_host_to_be_u64 (uint_fast64_t v) { return ecb_little_endian () ? ecb_bswap64 (v) : v; } |
|
|
1364 | |
|
|
1365 | ecb_inline uint_fast16_t ecb_host_to_le_u16 (uint_fast16_t v) { return ecb_big_endian () ? ecb_bswap16 (v) : v; } |
|
|
1366 | ecb_inline uint_fast32_t ecb_host_to_le_u32 (uint_fast32_t v) { return ecb_big_endian () ? ecb_bswap32 (v) : v; } |
|
|
1367 | ecb_inline uint_fast64_t ecb_host_to_le_u64 (uint_fast64_t v) { return ecb_big_endian () ? ecb_bswap64 (v) : v; } |
|
|
1368 | |
|
|
1369 | ecb_inline void ecb_poke_u16_u (void *ptr, uint16_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1370 | ecb_inline void ecb_poke_u32_u (void *ptr, uint32_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1371 | ecb_inline void ecb_poke_u64_u (void *ptr, uint64_t v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1372 | |
|
|
1373 | ecb_inline void ecb_poke_be_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_be_u16 (v)); } |
|
|
1374 | ecb_inline void ecb_poke_be_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_be_u32 (v)); } |
|
|
1375 | ecb_inline void ecb_poke_be_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_be_u64 (v)); } |
|
|
1376 | |
|
|
1377 | ecb_inline void ecb_poke_le_u16_u (void *ptr, uint_fast16_t v) { ecb_poke_u16_u (ptr, ecb_host_to_le_u16 (v)); } |
|
|
1378 | ecb_inline void ecb_poke_le_u32_u (void *ptr, uint_fast32_t v) { ecb_poke_u32_u (ptr, ecb_host_to_le_u32 (v)); } |
|
|
1379 | ecb_inline void ecb_poke_le_u64_u (void *ptr, uint_fast64_t v) { ecb_poke_u64_u (ptr, ecb_host_to_le_u64 (v)); } |
|
|
1380 | |
|
|
1381 | #if ECB_CPP |
|
|
1382 | |
|
|
1383 | inline uint8_t ecb_bswap (uint8_t v) { return v; } |
|
|
1384 | inline uint16_t ecb_bswap (uint16_t v) { return ecb_bswap16 (v); } |
|
|
1385 | inline uint32_t ecb_bswap (uint32_t v) { return ecb_bswap32 (v); } |
|
|
1386 | inline uint64_t ecb_bswap (uint64_t v) { return ecb_bswap64 (v); } |
|
|
1387 | |
|
|
1388 | template<typename T> inline T ecb_be_to_host (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
1389 | template<typename T> inline T ecb_le_to_host (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
1390 | template<typename T> inline T ecb_peek (const void *ptr) { return *(const T *)ptr; } |
|
|
1391 | template<typename T> inline T ecb_peek_be (const void *ptr) { return ecb_be_to_host (ecb_peek <T> (ptr)); } |
|
|
1392 | template<typename T> inline T ecb_peek_le (const void *ptr) { return ecb_le_to_host (ecb_peek <T> (ptr)); } |
|
|
1393 | template<typename T> inline T ecb_peek_u (const void *ptr) { T v; memcpy (&v, ptr, sizeof (v)); return v; } |
|
|
1394 | template<typename T> inline T ecb_peek_be_u (const void *ptr) { return ecb_be_to_host (ecb_peek_u<T> (ptr)); } |
|
|
1395 | template<typename T> inline T ecb_peek_le_u (const void *ptr) { return ecb_le_to_host (ecb_peek_u<T> (ptr)); } |
|
|
1396 | |
|
|
1397 | template<typename T> inline T ecb_host_to_be (T v) { return ecb_little_endian () ? ecb_bswap (v) : v; } |
|
|
1398 | template<typename T> inline T ecb_host_to_le (T v) { return ecb_big_endian () ? ecb_bswap (v) : v; } |
|
|
1399 | template<typename T> inline void ecb_poke (void *ptr, T v) { *(T *)ptr = v; } |
|
|
1400 | template<typename T> inline void ecb_poke_be (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_be (v)); } |
|
|
1401 | template<typename T> inline void ecb_poke_le (void *ptr, T v) { return ecb_poke <T> (ptr, ecb_host_to_le (v)); } |
|
|
1402 | template<typename T> inline void ecb_poke_u (void *ptr, T v) { memcpy (ptr, &v, sizeof (v)); } |
|
|
1403 | template<typename T> inline void ecb_poke_be_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_be (v)); } |
|
|
1404 | template<typename T> inline void ecb_poke_le_u (void *ptr, T v) { return ecb_poke_u<T> (ptr, ecb_host_to_le (v)); } |
|
|
1405 | |
|
|
1406 | #endif |
|
|
1407 | |
|
|
1408 | /*****************************************************************************/ |
|
|
1409 | |
|
|
1410 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1411 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1412 | #else |
|
|
1413 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1414 | #endif |
|
|
1415 | |
|
|
1416 | #if ECB_CPP |
|
|
1417 | template<typename T> |
|
|
1418 | static inline T ecb_div_rd (T val, T div) |
|
|
1419 | { |
|
|
1420 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1421 | } |
|
|
1422 | template<typename T> |
|
|
1423 | static inline T ecb_div_ru (T val, T div) |
|
|
1424 | { |
|
|
1425 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1426 | } |
|
|
1427 | #else |
|
|
1428 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1429 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1430 | #endif |
|
|
1431 | |
|
|
1432 | #if ecb_cplusplus_does_not_suck |
|
|
1433 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1434 | template<typename T, int N> |
|
|
1435 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1436 | { |
|
|
1437 | return N; |
|
|
1438 | } |
|
|
1439 | #else |
|
|
1440 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1441 | #endif |
|
|
1442 | |
|
|
1443 | /*****************************************************************************/ |
|
|
1444 | |
|
|
1445 | ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x); |
|
|
1446 | ecb_function_ ecb_const uint32_t |
|
|
1447 | ecb_binary16_to_binary32 (uint32_t x) |
|
|
1448 | { |
|
|
1449 | unsigned int s = (x & 0x8000) << (31 - 15); |
|
|
1450 | int e = (x >> 10) & 0x001f; |
|
|
1451 | unsigned int m = x & 0x03ff; |
|
|
1452 | |
|
|
1453 | if (ecb_expect_false (e == 31)) |
|
|
1454 | /* infinity or NaN */ |
|
|
1455 | e = 255 - (127 - 15); |
|
|
1456 | else if (ecb_expect_false (!e)) |
|
|
1457 | { |
|
|
1458 | if (ecb_expect_true (!m)) |
|
|
1459 | /* zero, handled by code below by forcing e to 0 */ |
|
|
1460 | e = 0 - (127 - 15); |
|
|
1461 | else |
|
|
1462 | { |
|
|
1463 | /* subnormal, renormalise */ |
|
|
1464 | unsigned int s = 10 - ecb_ld32 (m); |
|
|
1465 | |
|
|
1466 | m = (m << s) & 0x3ff; /* mask implicit bit */ |
|
|
1467 | e -= s - 1; |
|
|
1468 | } |
|
|
1469 | } |
|
|
1470 | |
|
|
1471 | /* e and m now are normalised, or zero, (or inf or nan) */ |
|
|
1472 | e += 127 - 15; |
|
|
1473 | |
|
|
1474 | return s | (e << 23) | (m << (23 - 10)); |
|
|
1475 | } |
|
|
1476 | |
|
|
1477 | ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x); |
|
|
1478 | ecb_function_ ecb_const uint16_t |
|
|
1479 | ecb_binary32_to_binary16 (uint32_t x) |
|
|
1480 | { |
|
|
1481 | unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */ |
|
|
1482 | unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */ |
|
|
1483 | unsigned int m = x & 0x007fffff; |
|
|
1484 | |
|
|
1485 | x &= 0x7fffffff; |
|
|
1486 | |
|
|
1487 | /* if it's within range of binary16 normals, use fast path */ |
|
|
1488 | if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff)) |
|
|
1489 | { |
|
|
1490 | /* mantissa round-to-even */ |
|
|
1491 | m += 0x00000fff + ((m >> (23 - 10)) & 1); |
|
|
1492 | |
|
|
1493 | /* handle overflow */ |
|
|
1494 | if (ecb_expect_false (m >= 0x00800000)) |
|
|
1495 | { |
|
|
1496 | m >>= 1; |
|
|
1497 | e += 1; |
|
|
1498 | } |
|
|
1499 | |
|
|
1500 | return s | (e << 10) | (m >> (23 - 10)); |
|
|
1501 | } |
|
|
1502 | |
|
|
1503 | /* handle large numbers and infinity */ |
|
|
1504 | if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000)) |
|
|
1505 | return s | 0x7c00; |
|
|
1506 | |
|
|
1507 | /* handle zero, subnormals and small numbers */ |
|
|
1508 | if (ecb_expect_true (x < 0x38800000)) |
|
|
1509 | { |
|
|
1510 | /* zero */ |
|
|
1511 | if (ecb_expect_true (!x)) |
|
|
1512 | return s; |
|
|
1513 | |
|
|
1514 | /* handle subnormals */ |
|
|
1515 | |
|
|
1516 | /* too small, will be zero */ |
|
|
1517 | if (e < (14 - 24)) /* might not be sharp, but is good enough */ |
|
|
1518 | return s; |
|
|
1519 | |
|
|
1520 | m |= 0x00800000; /* make implicit bit explicit */ |
|
|
1521 | |
|
|
1522 | /* very tricky - we need to round to the nearest e (+10) bit value */ |
|
|
1523 | { |
|
|
1524 | unsigned int bits = 14 - e; |
|
|
1525 | unsigned int half = (1 << (bits - 1)) - 1; |
|
|
1526 | unsigned int even = (m >> bits) & 1; |
|
|
1527 | |
|
|
1528 | /* if this overflows, we will end up with a normalised number */ |
|
|
1529 | m = (m + half + even) >> bits; |
|
|
1530 | } |
|
|
1531 | |
|
|
1532 | return s | m; |
|
|
1533 | } |
|
|
1534 | |
|
|
1535 | /* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */ |
|
|
1536 | m >>= 13; |
|
|
1537 | |
|
|
1538 | return s | 0x7c00 | m | !m; |
|
|
1539 | } |
|
|
1540 | |
|
|
1541 | /*******************************************************************************/ |
|
|
1542 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1543 | |
|
|
1544 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1545 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1546 | #if 0 \ |
|
|
1547 | || __i386 || __i386__ \ |
|
|
1548 | || ECB_GCC_AMD64 \ |
|
|
1549 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1550 | || defined __s390__ || defined __s390x__ \ |
|
|
1551 | || defined __mips__ \ |
|
|
1552 | || defined __alpha__ \ |
|
|
1553 | || defined __hppa__ \ |
|
|
1554 | || defined __ia64__ \ |
|
|
1555 | || defined __m68k__ \ |
|
|
1556 | || defined __m88k__ \ |
|
|
1557 | || defined __sh__ \ |
|
|
1558 | || defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \ |
|
|
1559 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \ |
|
|
1560 | || defined __aarch64__ |
|
|
1561 | #define ECB_STDFP 1 |
|
|
1562 | #else |
|
|
1563 | #define ECB_STDFP 0 |
|
|
1564 | #endif |
|
|
1565 | |
|
|
1566 | #ifndef ECB_NO_LIBM |
|
|
1567 | |
|
|
1568 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1569 | |
|
|
1570 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1571 | #ifdef INFINITY |
|
|
1572 | #define ECB_INFINITY INFINITY |
|
|
1573 | #else |
|
|
1574 | #define ECB_INFINITY HUGE_VAL |
|
|
1575 | #endif |
|
|
1576 | |
|
|
1577 | #ifdef NAN |
|
|
1578 | #define ECB_NAN NAN |
|
|
1579 | #else |
|
|
1580 | #define ECB_NAN ECB_INFINITY |
|
|
1581 | #endif |
|
|
1582 | |
|
|
1583 | #if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L |
|
|
1584 | #define ecb_ldexpf(x,e) ldexpf ((x), (e)) |
|
|
1585 | #define ecb_frexpf(x,e) frexpf ((x), (e)) |
|
|
1586 | #else |
|
|
1587 | #define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e)) |
|
|
1588 | #define ecb_frexpf(x,e) (float) frexp ((double) (x), (e)) |
|
|
1589 | #endif |
|
|
1590 | |
|
|
1591 | /* convert a float to ieee single/binary32 */ |
|
|
1592 | ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x); |
|
|
1593 | ecb_function_ ecb_const uint32_t |
|
|
1594 | ecb_float_to_binary32 (float x) |
|
|
1595 | { |
|
|
1596 | uint32_t r; |
|
|
1597 | |
|
|
1598 | #if ECB_STDFP |
|
|
1599 | memcpy (&r, &x, 4); |
|
|
1600 | #else |
|
|
1601 | /* slow emulation, works for anything but -0 */ |
|
|
1602 | uint32_t m; |
|
|
1603 | int e; |
|
|
1604 | |
|
|
1605 | if (x == 0e0f ) return 0x00000000U; |
|
|
1606 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1607 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1608 | if (x != x ) return 0x7fbfffffU; |
|
|
1609 | |
|
|
1610 | m = ecb_frexpf (x, &e) * 0x1000000U; |
|
|
1611 | |
|
|
1612 | r = m & 0x80000000U; |
|
|
1613 | |
|
|
1614 | if (r) |
|
|
1615 | m = -m; |
|
|
1616 | |
|
|
1617 | if (e <= -126) |
|
|
1618 | { |
|
|
1619 | m &= 0xffffffU; |
|
|
1620 | m >>= (-125 - e); |
|
|
1621 | e = -126; |
|
|
1622 | } |
|
|
1623 | |
|
|
1624 | r |= (e + 126) << 23; |
|
|
1625 | r |= m & 0x7fffffU; |
|
|
1626 | #endif |
|
|
1627 | |
|
|
1628 | return r; |
|
|
1629 | } |
|
|
1630 | |
|
|
1631 | /* converts an ieee single/binary32 to a float */ |
|
|
1632 | ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x); |
|
|
1633 | ecb_function_ ecb_const float |
|
|
1634 | ecb_binary32_to_float (uint32_t x) |
|
|
1635 | { |
|
|
1636 | float r; |
|
|
1637 | |
|
|
1638 | #if ECB_STDFP |
|
|
1639 | memcpy (&r, &x, 4); |
|
|
1640 | #else |
|
|
1641 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1642 | int neg = x >> 31; |
|
|
1643 | int e = (x >> 23) & 0xffU; |
|
|
1644 | |
|
|
1645 | x &= 0x7fffffU; |
|
|
1646 | |
|
|
1647 | if (e) |
|
|
1648 | x |= 0x800000U; |
|
|
1649 | else |
|
|
1650 | e = 1; |
|
|
1651 | |
|
|
1652 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1653 | r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1654 | |
|
|
1655 | r = neg ? -r : r; |
|
|
1656 | #endif |
|
|
1657 | |
|
|
1658 | return r; |
|
|
1659 | } |
|
|
1660 | |
|
|
1661 | /* convert a double to ieee double/binary64 */ |
|
|
1662 | ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x); |
|
|
1663 | ecb_function_ ecb_const uint64_t |
|
|
1664 | ecb_double_to_binary64 (double x) |
|
|
1665 | { |
|
|
1666 | uint64_t r; |
|
|
1667 | |
|
|
1668 | #if ECB_STDFP |
|
|
1669 | memcpy (&r, &x, 8); |
|
|
1670 | #else |
|
|
1671 | /* slow emulation, works for anything but -0 */ |
|
|
1672 | uint64_t m; |
|
|
1673 | int e; |
|
|
1674 | |
|
|
1675 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1676 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1677 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1678 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1679 | |
|
|
1680 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1681 | |
|
|
1682 | r = m & 0x8000000000000000;; |
|
|
1683 | |
|
|
1684 | if (r) |
|
|
1685 | m = -m; |
|
|
1686 | |
|
|
1687 | if (e <= -1022) |
|
|
1688 | { |
|
|
1689 | m &= 0x1fffffffffffffU; |
|
|
1690 | m >>= (-1021 - e); |
|
|
1691 | e = -1022; |
|
|
1692 | } |
|
|
1693 | |
|
|
1694 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1695 | r |= m & 0xfffffffffffffU; |
|
|
1696 | #endif |
|
|
1697 | |
|
|
1698 | return r; |
|
|
1699 | } |
|
|
1700 | |
|
|
1701 | /* converts an ieee double/binary64 to a double */ |
|
|
1702 | ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x); |
|
|
1703 | ecb_function_ ecb_const double |
|
|
1704 | ecb_binary64_to_double (uint64_t x) |
|
|
1705 | { |
|
|
1706 | double r; |
|
|
1707 | |
|
|
1708 | #if ECB_STDFP |
|
|
1709 | memcpy (&r, &x, 8); |
|
|
1710 | #else |
|
|
1711 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1712 | int neg = x >> 63; |
|
|
1713 | int e = (x >> 52) & 0x7ffU; |
|
|
1714 | |
|
|
1715 | x &= 0xfffffffffffffU; |
|
|
1716 | |
|
|
1717 | if (e) |
|
|
1718 | x |= 0x10000000000000U; |
|
|
1719 | else |
|
|
1720 | e = 1; |
|
|
1721 | |
|
|
1722 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1723 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1724 | |
|
|
1725 | r = neg ? -r : r; |
|
|
1726 | #endif |
|
|
1727 | |
|
|
1728 | return r; |
|
|
1729 | } |
|
|
1730 | |
|
|
1731 | /* convert a float to ieee half/binary16 */ |
|
|
1732 | ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x); |
|
|
1733 | ecb_function_ ecb_const uint16_t |
|
|
1734 | ecb_float_to_binary16 (float x) |
|
|
1735 | { |
|
|
1736 | return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x)); |
|
|
1737 | } |
|
|
1738 | |
|
|
1739 | /* convert an ieee half/binary16 to float */ |
|
|
1740 | ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x); |
|
|
1741 | ecb_function_ ecb_const float |
|
|
1742 | ecb_binary16_to_float (uint16_t x) |
|
|
1743 | { |
|
|
1744 | return ecb_binary32_to_float (ecb_binary16_to_binary32 (x)); |
|
|
1745 | } |
|
|
1746 | |
|
|
1747 | #endif |
|
|
1748 | |
|
|
1749 | #endif |
|
|
1750 | |
|
|
1751 | /* ECB.H END */ |
|
|
1752 | |
|
|
1753 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1754 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1755 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1756 | * from multiple threads, then you can define ECB_NO_THREADS when compiling |
|
|
1757 | * libev, in which cases the memory fences become nops. |
|
|
1758 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1759 | * which will then provide the memory fences. |
|
|
1760 | */ |
|
|
1761 | # error "memory fences not defined for your architecture, please report" |
|
|
1762 | #endif |
|
|
1763 | |
|
|
1764 | #ifndef ECB_MEMORY_FENCE |
|
|
1765 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1766 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1767 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1768 | #endif |
|
|
1769 | |
|
|
1770 | #define inline_size ecb_inline |
|
|
1771 | |
|
|
1772 | #if EV_FEATURE_CODE |
|
|
1773 | # define inline_speed ecb_inline |
|
|
1774 | #else |
|
|
1775 | # define inline_speed ecb_noinline static |
|
|
1776 | #endif |
|
|
1777 | |
|
|
1778 | /*****************************************************************************/ |
|
|
1779 | /* raw syscall wrappers */ |
|
|
1780 | |
|
|
1781 | #if EV_NEED_SYSCALL |
|
|
1782 | |
|
|
1783 | #include <sys/syscall.h> |
|
|
1784 | |
|
|
1785 | /* |
|
|
1786 | * define some syscall wrappers for common architectures |
|
|
1787 | * this is mostly for nice looks during debugging, not performance. |
|
|
1788 | * our syscalls return < 0, not == -1, on error. which is good |
|
|
1789 | * enough for linux aio. |
|
|
1790 | * TODO: arm is also common nowadays, maybe even mips and x86 |
|
|
1791 | * TODO: after implementing this, it suddenly looks like overkill, but its hard to remove... |
|
|
1792 | */ |
|
|
1793 | #if __GNUC__ && __linux && ECB_AMD64 && !EV_FEATURE_CODE |
|
|
1794 | /* the costly errno access probably kills this for size optimisation */ |
|
|
1795 | |
|
|
1796 | #define ev_syscall(nr,narg,arg1,arg2,arg3,arg4,arg5,arg6) \ |
|
|
1797 | ({ \ |
|
|
1798 | long res; \ |
|
|
1799 | register unsigned long r6 __asm__ ("r9" ); \ |
|
|
1800 | register unsigned long r5 __asm__ ("r8" ); \ |
|
|
1801 | register unsigned long r4 __asm__ ("r10"); \ |
|
|
1802 | register unsigned long r3 __asm__ ("rdx"); \ |
|
|
1803 | register unsigned long r2 __asm__ ("rsi"); \ |
|
|
1804 | register unsigned long r1 __asm__ ("rdi"); \ |
|
|
1805 | if (narg >= 6) r6 = (unsigned long)(arg6); \ |
|
|
1806 | if (narg >= 5) r5 = (unsigned long)(arg5); \ |
|
|
1807 | if (narg >= 4) r4 = (unsigned long)(arg4); \ |
|
|
1808 | if (narg >= 3) r3 = (unsigned long)(arg3); \ |
|
|
1809 | if (narg >= 2) r2 = (unsigned long)(arg2); \ |
|
|
1810 | if (narg >= 1) r1 = (unsigned long)(arg1); \ |
|
|
1811 | __asm__ __volatile__ ( \ |
|
|
1812 | "syscall\n\t" \ |
|
|
1813 | : "=a" (res) \ |
|
|
1814 | : "0" (nr), "r" (r1), "r" (r2), "r" (r3), "r" (r4), "r" (r5) \ |
|
|
1815 | : "cc", "r11", "cx", "memory"); \ |
|
|
1816 | errno = -res; \ |
|
|
1817 | res; \ |
|
|
1818 | }) |
|
|
1819 | |
|
|
1820 | #endif |
|
|
1821 | |
|
|
1822 | #ifdef ev_syscall |
|
|
1823 | #define ev_syscall0(nr) ev_syscall (nr, 0, 0, 0, 0, 0, 0, 0) |
|
|
1824 | #define ev_syscall1(nr,arg1) ev_syscall (nr, 1, arg1, 0, 0, 0, 0, 0) |
|
|
1825 | #define ev_syscall2(nr,arg1,arg2) ev_syscall (nr, 2, arg1, arg2, 0, 0, 0, 0) |
|
|
1826 | #define ev_syscall3(nr,arg1,arg2,arg3) ev_syscall (nr, 3, arg1, arg2, arg3, 0, 0, 0) |
|
|
1827 | #define ev_syscall4(nr,arg1,arg2,arg3,arg4) ev_syscall (nr, 3, arg1, arg2, arg3, arg4, 0, 0) |
|
|
1828 | #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) ev_syscall (nr, 5, arg1, arg2, arg3, arg4, arg5, 0) |
|
|
1829 | #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) ev_syscall (nr, 6, arg1, arg2, arg3, arg4, arg5,arg6) |
|
|
1830 | #else |
|
|
1831 | #define ev_syscall0(nr) syscall (nr) |
|
|
1832 | #define ev_syscall1(nr,arg1) syscall (nr, arg1) |
|
|
1833 | #define ev_syscall2(nr,arg1,arg2) syscall (nr, arg1, arg2) |
|
|
1834 | #define ev_syscall3(nr,arg1,arg2,arg3) syscall (nr, arg1, arg2, arg3) |
|
|
1835 | #define ev_syscall4(nr,arg1,arg2,arg3,arg4) syscall (nr, arg1, arg2, arg3, arg4) |
|
|
1836 | #define ev_syscall5(nr,arg1,arg2,arg3,arg4,arg5) syscall (nr, arg1, arg2, arg3, arg4, arg5) |
|
|
1837 | #define ev_syscall6(nr,arg1,arg2,arg3,arg4,arg5,arg6) syscall (nr, arg1, arg2, arg3, arg4, arg5,arg6) |
|
|
1838 | #endif |
|
|
1839 | |
|
|
1840 | #endif |
|
|
1841 | |
|
|
1842 | /*****************************************************************************/ |
|
|
1843 | |
|
|
1844 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1845 | |
|
|
1846 | #if EV_MINPRI == EV_MAXPRI |
|
|
1847 | # define ABSPRI(w) (((W)w), 0) |
|
|
1848 | #else |
|
|
1849 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1850 | #endif |
|
|
1851 | |
|
|
1852 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
1853 | |
|
|
1854 | typedef ev_watcher *W; |
|
|
1855 | typedef ev_watcher_list *WL; |
|
|
1856 | typedef ev_watcher_time *WT; |
|
|
1857 | |
|
|
1858 | #define ev_active(w) ((W)(w))->active |
|
|
1859 | #define ev_at(w) ((WT)(w))->at |
|
|
1860 | |
|
|
1861 | #if EV_USE_REALTIME |
|
|
1862 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1863 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1864 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1865 | #endif |
|
|
1866 | |
|
|
1867 | #if EV_USE_MONOTONIC |
|
|
1868 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1869 | #endif |
|
|
1870 | |
|
|
1871 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1872 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1873 | #endif |
|
|
1874 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1875 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1876 | #endif |
|
|
1877 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1878 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1879 | #endif |
|
|
1880 | |
|
|
1881 | #ifdef _WIN32 |
|
|
1882 | # include "ev_win32.c" |
|
|
1883 | #endif |
|
|
1884 | |
|
|
1885 | /*****************************************************************************/ |
|
|
1886 | |
|
|
1887 | #if EV_USE_LINUXAIO |
|
|
1888 | # include <linux/aio_abi.h> /* probably only needed for aio_context_t */ |
|
|
1889 | #endif |
|
|
1890 | |
|
|
1891 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1892 | |
|
|
1893 | #if EV_USE_FLOOR |
|
|
1894 | # include <math.h> |
|
|
1895 | # define ev_floor(v) floor (v) |
|
|
1896 | #else |
|
|
1897 | |
|
|
1898 | #include <float.h> |
|
|
1899 | |
|
|
1900 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1901 | ecb_noinline |
|
|
1902 | static ev_tstamp |
|
|
1903 | ev_floor (ev_tstamp v) |
|
|
1904 | { |
|
|
1905 | /* the choice of shift factor is not terribly important */ |
|
|
1906 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1907 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1908 | #else |
|
|
1909 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1910 | #endif |
|
|
1911 | |
|
|
1912 | /* special treatment for negative arguments */ |
|
|
1913 | if (ecb_expect_false (v < 0.)) |
|
|
1914 | { |
|
|
1915 | ev_tstamp f = -ev_floor (-v); |
|
|
1916 | |
|
|
1917 | return f - (f == v ? 0 : 1); |
|
|
1918 | } |
|
|
1919 | |
|
|
1920 | /* argument too large for an unsigned long? then reduce it */ |
|
|
1921 | if (ecb_expect_false (v >= shift)) |
|
|
1922 | { |
|
|
1923 | ev_tstamp f; |
|
|
1924 | |
|
|
1925 | if (v == v - 1.) |
|
|
1926 | return v; /* very large numbers are assumed to be integer */ |
|
|
1927 | |
|
|
1928 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1929 | return f + ev_floor (v - f); |
|
|
1930 | } |
|
|
1931 | |
|
|
1932 | /* fits into an unsigned long */ |
|
|
1933 | return (unsigned long)v; |
|
|
1934 | } |
|
|
1935 | |
|
|
1936 | #endif |
|
|
1937 | |
|
|
1938 | /*****************************************************************************/ |
|
|
1939 | |
|
|
1940 | #ifdef __linux |
|
|
1941 | # include <sys/utsname.h> |
|
|
1942 | #endif |
|
|
1943 | |
|
|
1944 | ecb_noinline ecb_cold |
|
|
1945 | static unsigned int |
|
|
1946 | ev_linux_version (void) |
|
|
1947 | { |
|
|
1948 | #ifdef __linux |
|
|
1949 | unsigned int v = 0; |
|
|
1950 | struct utsname buf; |
|
|
1951 | int i; |
|
|
1952 | char *p = buf.release; |
|
|
1953 | |
|
|
1954 | if (uname (&buf)) |
|
|
1955 | return 0; |
|
|
1956 | |
|
|
1957 | for (i = 3+1; --i; ) |
|
|
1958 | { |
|
|
1959 | unsigned int c = 0; |
|
|
1960 | |
|
|
1961 | for (;;) |
|
|
1962 | { |
|
|
1963 | if (*p >= '0' && *p <= '9') |
|
|
1964 | c = c * 10 + *p++ - '0'; |
|
|
1965 | else |
|
|
1966 | { |
|
|
1967 | p += *p == '.'; |
|
|
1968 | break; |
|
|
1969 | } |
|
|
1970 | } |
|
|
1971 | |
|
|
1972 | v = (v << 8) | c; |
|
|
1973 | } |
|
|
1974 | |
|
|
1975 | return v; |
|
|
1976 | #else |
|
|
1977 | return 0; |
|
|
1978 | #endif |
|
|
1979 | } |
|
|
1980 | |
|
|
1981 | /*****************************************************************************/ |
|
|
1982 | |
|
|
1983 | #if EV_AVOID_STDIO |
|
|
1984 | ecb_noinline ecb_cold |
|
|
1985 | static void |
|
|
1986 | ev_printerr (const char *msg) |
|
|
1987 | { |
|
|
1988 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1989 | } |
|
|
1990 | #endif |
|
|
1991 | |
|
|
1992 | static void (*syserr_cb)(const char *msg) EV_NOEXCEPT; |
|
|
1993 | |
|
|
1994 | ecb_cold |
|
|
1995 | void |
|
|
1996 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_NOEXCEPT) EV_NOEXCEPT |
|
|
1997 | { |
|
|
1998 | syserr_cb = cb; |
|
|
1999 | } |
|
|
2000 | |
|
|
2001 | ecb_noinline ecb_cold |
|
|
2002 | static void |
|
|
2003 | ev_syserr (const char *msg) |
|
|
2004 | { |
|
|
2005 | if (!msg) |
|
|
2006 | msg = "(libev) system error"; |
|
|
2007 | |
|
|
2008 | if (syserr_cb) |
|
|
2009 | syserr_cb (msg); |
|
|
2010 | else |
|
|
2011 | { |
|
|
2012 | #if EV_AVOID_STDIO |
|
|
2013 | ev_printerr (msg); |
|
|
2014 | ev_printerr (": "); |
|
|
2015 | ev_printerr (strerror (errno)); |
|
|
2016 | ev_printerr ("\n"); |
|
|
2017 | #else |
|
|
2018 | perror (msg); |
|
|
2019 | #endif |
|
|
2020 | abort (); |
|
|
2021 | } |
|
|
2022 | } |
|
|
2023 | |
|
|
2024 | static void * |
|
|
2025 | ev_realloc_emul (void *ptr, long size) EV_NOEXCEPT |
|
|
2026 | { |
|
|
2027 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
2028 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
2029 | * the single unix specification, so work around them here. |
|
|
2030 | * recently, also (at least) fedora and debian started breaking it, |
|
|
2031 | * despite documenting it otherwise. |
|
|
2032 | */ |
|
|
2033 | |
|
|
2034 | if (size) |
|
|
2035 | return realloc (ptr, size); |
|
|
2036 | |
|
|
2037 | free (ptr); |
|
|
2038 | return 0; |
|
|
2039 | } |
|
|
2040 | |
|
|
2041 | static void *(*alloc)(void *ptr, long size) EV_NOEXCEPT = ev_realloc_emul; |
|
|
2042 | |
|
|
2043 | ecb_cold |
|
|
2044 | void |
|
|
2045 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_NOEXCEPT) EV_NOEXCEPT |
|
|
2046 | { |
|
|
2047 | alloc = cb; |
|
|
2048 | } |
|
|
2049 | |
|
|
2050 | inline_speed void * |
|
|
2051 | ev_realloc (void *ptr, long size) |
|
|
2052 | { |
|
|
2053 | ptr = alloc (ptr, size); |
|
|
2054 | |
|
|
2055 | if (!ptr && size) |
|
|
2056 | { |
|
|
2057 | #if EV_AVOID_STDIO |
|
|
2058 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
2059 | #else |
|
|
2060 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
2061 | #endif |
|
|
2062 | abort (); |
|
|
2063 | } |
|
|
2064 | |
|
|
2065 | return ptr; |
|
|
2066 | } |
|
|
2067 | |
|
|
2068 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
2069 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
2070 | |
|
|
2071 | /*****************************************************************************/ |
|
|
2072 | |
|
|
2073 | /* set in reify when reification needed */ |
|
|
2074 | #define EV_ANFD_REIFY 1 |
|
|
2075 | |
|
|
2076 | /* file descriptor info structure */ |
|
|
2077 | typedef struct |
|
|
2078 | { |
|
|
2079 | WL head; |
|
|
2080 | unsigned char events; /* the events watched for */ |
|
|
2081 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
2082 | unsigned char emask; /* some backends store the actual kernel mask in here */ |
|
|
2083 | unsigned char eflags; /* flags field for use by backends */ |
|
|
2084 | #if EV_USE_EPOLL |
|
|
2085 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
2086 | #endif |
|
|
2087 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
2088 | SOCKET handle; |
|
|
2089 | #endif |
|
|
2090 | #if EV_USE_IOCP |
|
|
2091 | OVERLAPPED or, ow; |
|
|
2092 | #endif |
|
|
2093 | } ANFD; |
|
|
2094 | |
|
|
2095 | /* stores the pending event set for a given watcher */ |
|
|
2096 | typedef struct |
|
|
2097 | { |
|
|
2098 | W w; |
|
|
2099 | int events; /* the pending event set for the given watcher */ |
|
|
2100 | } ANPENDING; |
|
|
2101 | |
|
|
2102 | #if EV_USE_INOTIFY |
|
|
2103 | /* hash table entry per inotify-id */ |
|
|
2104 | typedef struct |
|
|
2105 | { |
|
|
2106 | WL head; |
|
|
2107 | } ANFS; |
|
|
2108 | #endif |
|
|
2109 | |
|
|
2110 | /* Heap Entry */ |
|
|
2111 | #if EV_HEAP_CACHE_AT |
|
|
2112 | /* a heap element */ |
|
|
2113 | typedef struct { |
|
|
2114 | ev_tstamp at; |
|
|
2115 | WT w; |
|
|
2116 | } ANHE; |
|
|
2117 | |
|
|
2118 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
2119 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
2120 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
2121 | #else |
|
|
2122 | /* a heap element */ |
|
|
2123 | typedef WT ANHE; |
|
|
2124 | |
|
|
2125 | #define ANHE_w(he) (he) |
|
|
2126 | #define ANHE_at(he) (he)->at |
|
|
2127 | #define ANHE_at_cache(he) |
|
|
2128 | #endif |
|
|
2129 | |
|
|
2130 | #if EV_MULTIPLICITY |
|
|
2131 | |
|
|
2132 | struct ev_loop |
|
|
2133 | { |
|
|
2134 | ev_tstamp ev_rt_now; |
|
|
2135 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
2136 | #define VAR(name,decl) decl; |
|
|
2137 | #include "ev_vars.h" |
|
|
2138 | #undef VAR |
|
|
2139 | }; |
|
|
2140 | #include "ev_wrap.h" |
|
|
2141 | |
|
|
2142 | static struct ev_loop default_loop_struct; |
|
|
2143 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
|
|
2144 | |
|
|
2145 | #else |
|
|
2146 | |
|
|
2147 | EV_API_DECL ev_tstamp ev_rt_now = EV_TS_CONST (0.); /* needs to be initialised to make it a definition despite extern */ |
|
|
2148 | #define VAR(name,decl) static decl; |
|
|
2149 | #include "ev_vars.h" |
|
|
2150 | #undef VAR |
|
|
2151 | |
|
|
2152 | static int ev_default_loop_ptr; |
|
|
2153 | |
|
|
2154 | #endif |
|
|
2155 | |
|
|
2156 | #if EV_FEATURE_API |
|
|
2157 | # define EV_RELEASE_CB if (ecb_expect_false (release_cb)) release_cb (EV_A) |
|
|
2158 | # define EV_ACQUIRE_CB if (ecb_expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
2159 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
2160 | #else |
|
|
2161 | # define EV_RELEASE_CB (void)0 |
|
|
2162 | # define EV_ACQUIRE_CB (void)0 |
|
|
2163 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
2164 | #endif |
|
|
2165 | |
|
|
2166 | #define EVBREAK_RECURSE 0x80 |
|
|
2167 | |
|
|
2168 | /*****************************************************************************/ |
|
|
2169 | |
|
|
2170 | #ifndef EV_HAVE_EV_TIME |
128 | ev_tstamp |
2171 | ev_tstamp |
129 | ev_time (void) |
2172 | ev_time (void) EV_NOEXCEPT |
130 | { |
2173 | { |
131 | #if EV_USE_REALTIME |
2174 | #if EV_USE_REALTIME |
|
|
2175 | if (ecb_expect_true (have_realtime)) |
|
|
2176 | { |
132 | struct timespec ts; |
2177 | struct timespec ts; |
133 | clock_gettime (CLOCK_REALTIME, &ts); |
2178 | clock_gettime (CLOCK_REALTIME, &ts); |
134 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
2179 | return EV_TS_GET (ts); |
135 | #else |
2180 | } |
|
|
2181 | #endif |
|
|
2182 | |
|
|
2183 | { |
136 | struct timeval tv; |
2184 | struct timeval tv; |
137 | gettimeofday (&tv, 0); |
2185 | gettimeofday (&tv, 0); |
138 | return tv.tv_sec + tv.tv_usec * 1e-6; |
2186 | return EV_TV_GET (tv); |
139 | #endif |
2187 | } |
140 | } |
2188 | } |
|
|
2189 | #endif |
141 | |
2190 | |
142 | static ev_tstamp |
2191 | inline_size ev_tstamp |
143 | get_clock (void) |
2192 | get_clock (void) |
144 | { |
2193 | { |
145 | #if EV_USE_MONOTONIC |
2194 | #if EV_USE_MONOTONIC |
146 | if (expect_true (have_monotonic)) |
2195 | if (ecb_expect_true (have_monotonic)) |
147 | { |
2196 | { |
148 | struct timespec ts; |
2197 | struct timespec ts; |
149 | clock_gettime (CLOCK_MONOTONIC, &ts); |
2198 | clock_gettime (CLOCK_MONOTONIC, &ts); |
150 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
2199 | return EV_TS_GET (ts); |
151 | } |
2200 | } |
152 | #endif |
2201 | #endif |
153 | |
2202 | |
154 | return ev_time (); |
2203 | return ev_time (); |
155 | } |
2204 | } |
156 | |
2205 | |
157 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
2206 | #if EV_MULTIPLICITY |
|
|
2207 | ev_tstamp |
|
|
2208 | ev_now (EV_P) EV_NOEXCEPT |
|
|
2209 | { |
|
|
2210 | return ev_rt_now; |
|
|
2211 | } |
|
|
2212 | #endif |
158 | |
2213 | |
159 | #define array_needsize(base,cur,cnt,init) \ |
2214 | void |
160 | if (expect_false ((cnt) > cur)) \ |
2215 | ev_sleep (ev_tstamp delay) EV_NOEXCEPT |
161 | { \ |
2216 | { |
162 | int newcnt = cur; \ |
2217 | if (delay > EV_TS_CONST (0.)) |
163 | do \ |
|
|
164 | { \ |
|
|
165 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
166 | } \ |
|
|
167 | while ((cnt) > newcnt); \ |
|
|
168 | \ |
|
|
169 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
170 | init (base + cur, newcnt - cur); \ |
|
|
171 | cur = newcnt; \ |
|
|
172 | } |
2218 | { |
|
|
2219 | #if EV_USE_NANOSLEEP |
|
|
2220 | struct timespec ts; |
|
|
2221 | |
|
|
2222 | EV_TS_SET (ts, delay); |
|
|
2223 | nanosleep (&ts, 0); |
|
|
2224 | #elif defined _WIN32 |
|
|
2225 | /* maybe this should round up, as ms is very low resolution */ |
|
|
2226 | /* compared to select (µs) or nanosleep (ns) */ |
|
|
2227 | Sleep ((unsigned long)(EV_TS_TO_MSEC (delay))); |
|
|
2228 | #else |
|
|
2229 | struct timeval tv; |
|
|
2230 | |
|
|
2231 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
2232 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
2233 | /* by older ones */ |
|
|
2234 | EV_TV_SET (tv, delay); |
|
|
2235 | select (0, 0, 0, 0, &tv); |
|
|
2236 | #endif |
|
|
2237 | } |
|
|
2238 | } |
173 | |
2239 | |
174 | /*****************************************************************************/ |
2240 | /*****************************************************************************/ |
175 | |
2241 | |
176 | typedef struct |
2242 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
177 | { |
|
|
178 | struct ev_io *head; |
|
|
179 | unsigned char events; |
|
|
180 | unsigned char reify; |
|
|
181 | } ANFD; |
|
|
182 | |
2243 | |
183 | static ANFD *anfds; |
2244 | /* find a suitable new size for the given array, */ |
184 | static int anfdmax; |
2245 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
2246 | inline_size int |
|
|
2247 | array_nextsize (int elem, int cur, int cnt) |
|
|
2248 | { |
|
|
2249 | int ncur = cur + 1; |
185 | |
2250 | |
|
|
2251 | do |
|
|
2252 | ncur <<= 1; |
|
|
2253 | while (cnt > ncur); |
|
|
2254 | |
|
|
2255 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
|
|
2256 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
2257 | { |
|
|
2258 | ncur *= elem; |
|
|
2259 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
2260 | ncur = ncur - sizeof (void *) * 4; |
|
|
2261 | ncur /= elem; |
|
|
2262 | } |
|
|
2263 | |
|
|
2264 | return ncur; |
|
|
2265 | } |
|
|
2266 | |
|
|
2267 | ecb_noinline ecb_cold |
|
|
2268 | static void * |
|
|
2269 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
2270 | { |
|
|
2271 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
2272 | return ev_realloc (base, elem * *cur); |
|
|
2273 | } |
|
|
2274 | |
|
|
2275 | #define array_needsize_noinit(base,offset,count) |
|
|
2276 | |
|
|
2277 | #define array_needsize_zerofill(base,offset,count) \ |
|
|
2278 | memset ((void *)(base + offset), 0, sizeof (*(base)) * (count)) |
|
|
2279 | |
|
|
2280 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
2281 | if (ecb_expect_false ((cnt) > (cur))) \ |
|
|
2282 | { \ |
|
|
2283 | ecb_unused int ocur_ = (cur); \ |
|
|
2284 | (base) = (type *)array_realloc \ |
|
|
2285 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
2286 | init ((base), ocur_, ((cur) - ocur_)); \ |
|
|
2287 | } |
|
|
2288 | |
|
|
2289 | #if 0 |
|
|
2290 | #define array_slim(type,stem) \ |
|
|
2291 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
2292 | { \ |
|
|
2293 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
2294 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
2295 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
2296 | } |
|
|
2297 | #endif |
|
|
2298 | |
|
|
2299 | #define array_free(stem, idx) \ |
|
|
2300 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
2301 | |
|
|
2302 | /*****************************************************************************/ |
|
|
2303 | |
|
|
2304 | /* dummy callback for pending events */ |
|
|
2305 | ecb_noinline |
186 | static void |
2306 | static void |
187 | anfds_init (ANFD *base, int count) |
2307 | pendingcb (EV_P_ ev_prepare *w, int revents) |
188 | { |
2308 | { |
189 | while (count--) |
2309 | } |
190 | { |
|
|
191 | base->head = 0; |
|
|
192 | base->events = EV_NONE; |
|
|
193 | base->reify = 0; |
|
|
194 | |
2310 | |
195 | ++base; |
2311 | ecb_noinline |
|
|
2312 | void |
|
|
2313 | ev_feed_event (EV_P_ void *w, int revents) EV_NOEXCEPT |
|
|
2314 | { |
|
|
2315 | W w_ = (W)w; |
|
|
2316 | int pri = ABSPRI (w_); |
|
|
2317 | |
|
|
2318 | if (ecb_expect_false (w_->pending)) |
|
|
2319 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
2320 | else |
196 | } |
2321 | { |
197 | } |
2322 | w_->pending = ++pendingcnt [pri]; |
198 | |
2323 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, array_needsize_noinit); |
199 | typedef struct |
2324 | pendings [pri][w_->pending - 1].w = w_; |
200 | { |
|
|
201 | W w; |
|
|
202 | int events; |
|
|
203 | } ANPENDING; |
|
|
204 | |
|
|
205 | static ANPENDING *pendings [NUMPRI]; |
|
|
206 | static int pendingmax [NUMPRI], pendingcnt [NUMPRI]; |
|
|
207 | |
|
|
208 | static void |
|
|
209 | event (W w, int events) |
|
|
210 | { |
|
|
211 | if (w->pending) |
|
|
212 | { |
|
|
213 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
2325 | pendings [pri][w_->pending - 1].events = revents; |
214 | return; |
|
|
215 | } |
2326 | } |
216 | |
2327 | |
217 | w->pending = ++pendingcnt [ABSPRI (w)]; |
2328 | pendingpri = NUMPRI - 1; |
218 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
219 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
220 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
221 | } |
2329 | } |
222 | |
2330 | |
223 | static void |
2331 | inline_speed void |
|
|
2332 | feed_reverse (EV_P_ W w) |
|
|
2333 | { |
|
|
2334 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, array_needsize_noinit); |
|
|
2335 | rfeeds [rfeedcnt++] = w; |
|
|
2336 | } |
|
|
2337 | |
|
|
2338 | inline_size void |
|
|
2339 | feed_reverse_done (EV_P_ int revents) |
|
|
2340 | { |
|
|
2341 | do |
|
|
2342 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
2343 | while (rfeedcnt); |
|
|
2344 | } |
|
|
2345 | |
|
|
2346 | inline_speed void |
224 | queue_events (W *events, int eventcnt, int type) |
2347 | queue_events (EV_P_ W *events, int eventcnt, int type) |
225 | { |
2348 | { |
226 | int i; |
2349 | int i; |
227 | |
2350 | |
228 | for (i = 0; i < eventcnt; ++i) |
2351 | for (i = 0; i < eventcnt; ++i) |
229 | event (events [i], type); |
2352 | ev_feed_event (EV_A_ events [i], type); |
230 | } |
2353 | } |
231 | |
2354 | |
232 | static void |
2355 | /*****************************************************************************/ |
|
|
2356 | |
|
|
2357 | inline_speed void |
233 | fd_event (int fd, int events) |
2358 | fd_event_nocheck (EV_P_ int fd, int revents) |
234 | { |
2359 | { |
235 | ANFD *anfd = anfds + fd; |
2360 | ANFD *anfd = anfds + fd; |
236 | struct ev_io *w; |
2361 | ev_io *w; |
237 | |
2362 | |
238 | for (w = anfd->head; w; w = w->next) |
2363 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
239 | { |
2364 | { |
240 | int ev = w->events & events; |
2365 | int ev = w->events & revents; |
241 | |
2366 | |
242 | if (ev) |
2367 | if (ev) |
243 | event ((W)w, ev); |
2368 | ev_feed_event (EV_A_ (W)w, ev); |
244 | } |
2369 | } |
245 | } |
2370 | } |
246 | |
2371 | |
247 | /*****************************************************************************/ |
2372 | /* do not submit kernel events for fds that have reify set */ |
|
|
2373 | /* because that means they changed while we were polling for new events */ |
|
|
2374 | inline_speed void |
|
|
2375 | fd_event (EV_P_ int fd, int revents) |
|
|
2376 | { |
|
|
2377 | ANFD *anfd = anfds + fd; |
248 | |
2378 | |
249 | static int *fdchanges; |
2379 | if (ecb_expect_true (!anfd->reify)) |
250 | static int fdchangemax, fdchangecnt; |
2380 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
2381 | } |
251 | |
2382 | |
252 | static void |
2383 | void |
253 | fd_reify (void) |
2384 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_NOEXCEPT |
|
|
2385 | { |
|
|
2386 | if (fd >= 0 && fd < anfdmax) |
|
|
2387 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
2388 | } |
|
|
2389 | |
|
|
2390 | /* make sure the external fd watch events are in-sync */ |
|
|
2391 | /* with the kernel/libev internal state */ |
|
|
2392 | inline_size void |
|
|
2393 | fd_reify (EV_P) |
254 | { |
2394 | { |
255 | int i; |
2395 | int i; |
256 | |
2396 | |
|
|
2397 | /* most backends do not modify the fdchanges list in backend_modfiy. |
|
|
2398 | * except io_uring, which has fixed-size buffers which might force us |
|
|
2399 | * to handle events in backend_modify, causing fdchanges to be amended, |
|
|
2400 | * which could result in an endless loop. |
|
|
2401 | * to avoid this, we do not dynamically handle fds that were added |
|
|
2402 | * during fd_reify. that means that for those backends, fdchangecnt |
|
|
2403 | * might be non-zero during poll, which must cause them to not block. |
|
|
2404 | * to not put too much of a burden on other backends, this detail |
|
|
2405 | * needs to be handled in the backend. |
|
|
2406 | */ |
|
|
2407 | int changecnt = fdchangecnt; |
|
|
2408 | |
|
|
2409 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
257 | for (i = 0; i < fdchangecnt; ++i) |
2410 | for (i = 0; i < changecnt; ++i) |
258 | { |
2411 | { |
259 | int fd = fdchanges [i]; |
2412 | int fd = fdchanges [i]; |
260 | ANFD *anfd = anfds + fd; |
2413 | ANFD *anfd = anfds + fd; |
|
|
2414 | |
|
|
2415 | if (anfd->reify & EV__IOFDSET && anfd->head) |
|
|
2416 | { |
|
|
2417 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
2418 | |
|
|
2419 | if (handle != anfd->handle) |
|
|
2420 | { |
|
|
2421 | unsigned long arg; |
|
|
2422 | |
|
|
2423 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
2424 | |
|
|
2425 | /* handle changed, but fd didn't - we need to do it in two steps */ |
|
|
2426 | backend_modify (EV_A_ fd, anfd->events, 0); |
|
|
2427 | anfd->events = 0; |
|
|
2428 | anfd->handle = handle; |
|
|
2429 | } |
|
|
2430 | } |
|
|
2431 | } |
|
|
2432 | #endif |
|
|
2433 | |
|
|
2434 | for (i = 0; i < changecnt; ++i) |
|
|
2435 | { |
|
|
2436 | int fd = fdchanges [i]; |
|
|
2437 | ANFD *anfd = anfds + fd; |
261 | struct ev_io *w; |
2438 | ev_io *w; |
262 | |
2439 | |
263 | int events = 0; |
2440 | unsigned char o_events = anfd->events; |
264 | |
2441 | unsigned char o_reify = anfd->reify; |
265 | for (w = anfd->head; w; w = w->next) |
|
|
266 | events |= w->events; |
|
|
267 | |
2442 | |
268 | anfd->reify = 0; |
2443 | anfd->reify = 0; |
269 | |
2444 | |
270 | if (anfd->events != events) |
2445 | /*if (ecb_expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
271 | { |
2446 | { |
272 | method_modify (fd, anfd->events, events); |
|
|
273 | anfd->events = events; |
2447 | anfd->events = 0; |
|
|
2448 | |
|
|
2449 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
2450 | anfd->events |= (unsigned char)w->events; |
|
|
2451 | |
|
|
2452 | if (o_events != anfd->events) |
|
|
2453 | o_reify = EV__IOFDSET; /* actually |= */ |
274 | } |
2454 | } |
|
|
2455 | |
|
|
2456 | if (o_reify & EV__IOFDSET) |
|
|
2457 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
2458 | } |
|
|
2459 | |
|
|
2460 | /* normally, fdchangecnt hasn't changed. if it has, then new fds have been added. |
|
|
2461 | * this is a rare case (see beginning comment in this function), so we copy them to the |
|
|
2462 | * front and hope the backend handles this case. |
|
|
2463 | */ |
|
|
2464 | if (ecb_expect_false (fdchangecnt != changecnt)) |
|
|
2465 | memmove (fdchanges, fdchanges + changecnt, (fdchangecnt - changecnt) * sizeof (*fdchanges)); |
|
|
2466 | |
|
|
2467 | fdchangecnt -= changecnt; |
|
|
2468 | } |
|
|
2469 | |
|
|
2470 | /* something about the given fd changed */ |
|
|
2471 | inline_size |
|
|
2472 | void |
|
|
2473 | fd_change (EV_P_ int fd, int flags) |
|
|
2474 | { |
|
|
2475 | unsigned char reify = anfds [fd].reify; |
|
|
2476 | anfds [fd].reify = reify | flags; |
|
|
2477 | |
|
|
2478 | if (ecb_expect_true (!reify)) |
275 | } |
2479 | { |
276 | |
2480 | ++fdchangecnt; |
277 | fdchangecnt = 0; |
2481 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, array_needsize_noinit); |
|
|
2482 | fdchanges [fdchangecnt - 1] = fd; |
|
|
2483 | } |
278 | } |
2484 | } |
279 | |
2485 | |
|
|
2486 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
2487 | inline_speed ecb_cold void |
|
|
2488 | fd_kill (EV_P_ int fd) |
|
|
2489 | { |
|
|
2490 | ev_io *w; |
|
|
2491 | |
|
|
2492 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
2493 | { |
|
|
2494 | ev_io_stop (EV_A_ w); |
|
|
2495 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
2496 | } |
|
|
2497 | } |
|
|
2498 | |
|
|
2499 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
2500 | inline_size ecb_cold int |
|
|
2501 | fd_valid (int fd) |
|
|
2502 | { |
|
|
2503 | #ifdef _WIN32 |
|
|
2504 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
2505 | #else |
|
|
2506 | return fcntl (fd, F_GETFD) != -1; |
|
|
2507 | #endif |
|
|
2508 | } |
|
|
2509 | |
|
|
2510 | /* called on EBADF to verify fds */ |
|
|
2511 | ecb_noinline ecb_cold |
280 | static void |
2512 | static void |
281 | fd_change (int fd) |
2513 | fd_ebadf (EV_P) |
282 | { |
|
|
283 | if (anfds [fd].reify || fdchangecnt < 0) |
|
|
284 | return; |
|
|
285 | |
|
|
286 | anfds [fd].reify = 1; |
|
|
287 | |
|
|
288 | ++fdchangecnt; |
|
|
289 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
290 | fdchanges [fdchangecnt - 1] = fd; |
|
|
291 | } |
|
|
292 | |
|
|
293 | static void |
|
|
294 | fd_kill (int fd) |
|
|
295 | { |
|
|
296 | struct ev_io *w; |
|
|
297 | |
|
|
298 | printf ("killing fd %d\n", fd);//D |
|
|
299 | while ((w = anfds [fd].head)) |
|
|
300 | { |
|
|
301 | ev_io_stop (w); |
|
|
302 | event ((W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
303 | } |
|
|
304 | } |
|
|
305 | |
|
|
306 | /* called on EBADF to verify fds */ |
|
|
307 | static void |
|
|
308 | fd_ebadf (void) |
|
|
309 | { |
2514 | { |
310 | int fd; |
2515 | int fd; |
311 | |
2516 | |
312 | for (fd = 0; fd < anfdmax; ++fd) |
2517 | for (fd = 0; fd < anfdmax; ++fd) |
313 | if (anfds [fd].events) |
2518 | if (anfds [fd].events) |
314 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
2519 | if (!fd_valid (fd) && errno == EBADF) |
315 | fd_kill (fd); |
2520 | fd_kill (EV_A_ fd); |
316 | } |
2521 | } |
317 | |
2522 | |
318 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
2523 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
2524 | ecb_noinline ecb_cold |
319 | static void |
2525 | static void |
320 | fd_enomem (void) |
2526 | fd_enomem (EV_P) |
321 | { |
2527 | { |
322 | int fd = anfdmax; |
2528 | int fd; |
323 | |
2529 | |
324 | while (fd--) |
2530 | for (fd = anfdmax; fd--; ) |
325 | if (anfds [fd].events) |
2531 | if (anfds [fd].events) |
326 | { |
2532 | { |
327 | close (fd); |
|
|
328 | fd_kill (fd); |
2533 | fd_kill (EV_A_ fd); |
329 | return; |
2534 | break; |
330 | } |
2535 | } |
331 | } |
2536 | } |
332 | |
2537 | |
|
|
2538 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
2539 | ecb_noinline |
|
|
2540 | static void |
|
|
2541 | fd_rearm_all (EV_P) |
|
|
2542 | { |
|
|
2543 | int fd; |
|
|
2544 | |
|
|
2545 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
2546 | if (anfds [fd].events) |
|
|
2547 | { |
|
|
2548 | anfds [fd].events = 0; |
|
|
2549 | anfds [fd].emask = 0; |
|
|
2550 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
2551 | } |
|
|
2552 | } |
|
|
2553 | |
|
|
2554 | /* used to prepare libev internal fd's */ |
|
|
2555 | /* this is not fork-safe */ |
|
|
2556 | inline_speed void |
|
|
2557 | fd_intern (int fd) |
|
|
2558 | { |
|
|
2559 | #ifdef _WIN32 |
|
|
2560 | unsigned long arg = 1; |
|
|
2561 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
2562 | #else |
|
|
2563 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
2564 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
2565 | #endif |
|
|
2566 | } |
|
|
2567 | |
333 | /*****************************************************************************/ |
2568 | /*****************************************************************************/ |
334 | |
2569 | |
335 | static struct ev_timer **timers; |
2570 | /* |
336 | static int timermax, timercnt; |
2571 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
2572 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
2573 | * the branching factor of the d-tree. |
|
|
2574 | */ |
337 | |
2575 | |
338 | static struct ev_periodic **periodics; |
2576 | /* |
339 | static int periodicmax, periodiccnt; |
2577 | * at the moment we allow libev the luxury of two heaps, |
|
|
2578 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
2579 | * which is more cache-efficient. |
|
|
2580 | * the difference is about 5% with 50000+ watchers. |
|
|
2581 | */ |
|
|
2582 | #if EV_USE_4HEAP |
340 | |
2583 | |
|
|
2584 | #define DHEAP 4 |
|
|
2585 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
2586 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
2587 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
2588 | |
|
|
2589 | /* away from the root */ |
|
|
2590 | inline_speed void |
|
|
2591 | downheap (ANHE *heap, int N, int k) |
|
|
2592 | { |
|
|
2593 | ANHE he = heap [k]; |
|
|
2594 | ANHE *E = heap + N + HEAP0; |
|
|
2595 | |
|
|
2596 | for (;;) |
|
|
2597 | { |
|
|
2598 | ev_tstamp minat; |
|
|
2599 | ANHE *minpos; |
|
|
2600 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
2601 | |
|
|
2602 | /* find minimum child */ |
|
|
2603 | if (ecb_expect_true (pos + DHEAP - 1 < E)) |
|
|
2604 | { |
|
|
2605 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2606 | if ( minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2607 | if ( minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2608 | if ( minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2609 | } |
|
|
2610 | else if (pos < E) |
|
|
2611 | { |
|
|
2612 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2613 | if (pos + 1 < E && minat > ANHE_at (pos [1])) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2614 | if (pos + 2 < E && minat > ANHE_at (pos [2])) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2615 | if (pos + 3 < E && minat > ANHE_at (pos [3])) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2616 | } |
|
|
2617 | else |
|
|
2618 | break; |
|
|
2619 | |
|
|
2620 | if (ANHE_at (he) <= minat) |
|
|
2621 | break; |
|
|
2622 | |
|
|
2623 | heap [k] = *minpos; |
|
|
2624 | ev_active (ANHE_w (*minpos)) = k; |
|
|
2625 | |
|
|
2626 | k = minpos - heap; |
|
|
2627 | } |
|
|
2628 | |
|
|
2629 | heap [k] = he; |
|
|
2630 | ev_active (ANHE_w (he)) = k; |
|
|
2631 | } |
|
|
2632 | |
|
|
2633 | #else /* not 4HEAP */ |
|
|
2634 | |
|
|
2635 | #define HEAP0 1 |
|
|
2636 | #define HPARENT(k) ((k) >> 1) |
|
|
2637 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
2638 | |
|
|
2639 | /* away from the root */ |
|
|
2640 | inline_speed void |
|
|
2641 | downheap (ANHE *heap, int N, int k) |
|
|
2642 | { |
|
|
2643 | ANHE he = heap [k]; |
|
|
2644 | |
|
|
2645 | for (;;) |
|
|
2646 | { |
|
|
2647 | int c = k << 1; |
|
|
2648 | |
|
|
2649 | if (c >= N + HEAP0) |
|
|
2650 | break; |
|
|
2651 | |
|
|
2652 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2653 | ? 1 : 0; |
|
|
2654 | |
|
|
2655 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2656 | break; |
|
|
2657 | |
|
|
2658 | heap [k] = heap [c]; |
|
|
2659 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2660 | |
|
|
2661 | k = c; |
|
|
2662 | } |
|
|
2663 | |
|
|
2664 | heap [k] = he; |
|
|
2665 | ev_active (ANHE_w (he)) = k; |
|
|
2666 | } |
|
|
2667 | #endif |
|
|
2668 | |
|
|
2669 | /* towards the root */ |
|
|
2670 | inline_speed void |
|
|
2671 | upheap (ANHE *heap, int k) |
|
|
2672 | { |
|
|
2673 | ANHE he = heap [k]; |
|
|
2674 | |
|
|
2675 | for (;;) |
|
|
2676 | { |
|
|
2677 | int p = HPARENT (k); |
|
|
2678 | |
|
|
2679 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2680 | break; |
|
|
2681 | |
|
|
2682 | heap [k] = heap [p]; |
|
|
2683 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2684 | k = p; |
|
|
2685 | } |
|
|
2686 | |
|
|
2687 | heap [k] = he; |
|
|
2688 | ev_active (ANHE_w (he)) = k; |
|
|
2689 | } |
|
|
2690 | |
|
|
2691 | /* move an element suitably so it is in a correct place */ |
|
|
2692 | inline_size void |
|
|
2693 | adjustheap (ANHE *heap, int N, int k) |
|
|
2694 | { |
|
|
2695 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2696 | upheap (heap, k); |
|
|
2697 | else |
|
|
2698 | downheap (heap, N, k); |
|
|
2699 | } |
|
|
2700 | |
|
|
2701 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2702 | inline_size void |
|
|
2703 | reheap (ANHE *heap, int N) |
|
|
2704 | { |
|
|
2705 | int i; |
|
|
2706 | |
|
|
2707 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2708 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
2709 | for (i = 0; i < N; ++i) |
|
|
2710 | upheap (heap, i + HEAP0); |
|
|
2711 | } |
|
|
2712 | |
|
|
2713 | /*****************************************************************************/ |
|
|
2714 | |
|
|
2715 | /* associate signal watchers to a signal */ |
|
|
2716 | typedef struct |
|
|
2717 | { |
|
|
2718 | EV_ATOMIC_T pending; |
|
|
2719 | #if EV_MULTIPLICITY |
|
|
2720 | EV_P; |
|
|
2721 | #endif |
|
|
2722 | WL head; |
|
|
2723 | } ANSIG; |
|
|
2724 | |
|
|
2725 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2726 | |
|
|
2727 | /*****************************************************************************/ |
|
|
2728 | |
|
|
2729 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2730 | |
|
|
2731 | ecb_noinline ecb_cold |
341 | static void |
2732 | static void |
342 | upheap (WT *timers, int k) |
2733 | evpipe_init (EV_P) |
343 | { |
2734 | { |
344 | WT w = timers [k]; |
2735 | if (!ev_is_active (&pipe_w)) |
345 | |
|
|
346 | while (k && timers [k >> 1]->at > w->at) |
|
|
347 | { |
|
|
348 | timers [k] = timers [k >> 1]; |
|
|
349 | timers [k]->active = k + 1; |
|
|
350 | k >>= 1; |
|
|
351 | } |
2736 | { |
|
|
2737 | int fds [2]; |
352 | |
2738 | |
353 | timers [k] = w; |
2739 | # if EV_USE_EVENTFD |
354 | timers [k]->active = k + 1; |
2740 | fds [0] = -1; |
|
|
2741 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2742 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2743 | fds [1] = eventfd (0, 0); |
355 | |
2744 | |
356 | } |
2745 | if (fds [1] < 0) |
|
|
2746 | # endif |
|
|
2747 | { |
|
|
2748 | while (pipe (fds)) |
|
|
2749 | ev_syserr ("(libev) error creating signal/async pipe"); |
357 | |
2750 | |
|
|
2751 | fd_intern (fds [0]); |
|
|
2752 | } |
|
|
2753 | |
|
|
2754 | evpipe [0] = fds [0]; |
|
|
2755 | |
|
|
2756 | if (evpipe [1] < 0) |
|
|
2757 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2758 | else |
|
|
2759 | { |
|
|
2760 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2761 | /* so that evpipe_write can always rely on its value. */ |
|
|
2762 | /* this branch does not do anything sensible on windows, */ |
|
|
2763 | /* so must not be executed on windows */ |
|
|
2764 | |
|
|
2765 | dup2 (fds [1], evpipe [1]); |
|
|
2766 | close (fds [1]); |
|
|
2767 | } |
|
|
2768 | |
|
|
2769 | fd_intern (evpipe [1]); |
|
|
2770 | |
|
|
2771 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2772 | ev_io_start (EV_A_ &pipe_w); |
|
|
2773 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2774 | } |
|
|
2775 | } |
|
|
2776 | |
|
|
2777 | inline_speed void |
|
|
2778 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2779 | { |
|
|
2780 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2781 | |
|
|
2782 | if (ecb_expect_true (*flag)) |
|
|
2783 | return; |
|
|
2784 | |
|
|
2785 | *flag = 1; |
|
|
2786 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2787 | |
|
|
2788 | pipe_write_skipped = 1; |
|
|
2789 | |
|
|
2790 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2791 | |
|
|
2792 | if (pipe_write_wanted) |
|
|
2793 | { |
|
|
2794 | int old_errno; |
|
|
2795 | |
|
|
2796 | pipe_write_skipped = 0; |
|
|
2797 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2798 | |
|
|
2799 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2800 | |
|
|
2801 | #if EV_USE_EVENTFD |
|
|
2802 | if (evpipe [0] < 0) |
|
|
2803 | { |
|
|
2804 | uint64_t counter = 1; |
|
|
2805 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2806 | } |
|
|
2807 | else |
|
|
2808 | #endif |
|
|
2809 | { |
|
|
2810 | #ifdef _WIN32 |
|
|
2811 | WSABUF buf; |
|
|
2812 | DWORD sent; |
|
|
2813 | buf.buf = (char *)&buf; |
|
|
2814 | buf.len = 1; |
|
|
2815 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2816 | #else |
|
|
2817 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2818 | #endif |
|
|
2819 | } |
|
|
2820 | |
|
|
2821 | errno = old_errno; |
|
|
2822 | } |
|
|
2823 | } |
|
|
2824 | |
|
|
2825 | /* called whenever the libev signal pipe */ |
|
|
2826 | /* got some events (signal, async) */ |
358 | static void |
2827 | static void |
359 | downheap (WT *timers, int N, int k) |
2828 | pipecb (EV_P_ ev_io *iow, int revents) |
360 | { |
2829 | { |
361 | WT w = timers [k]; |
2830 | int i; |
362 | |
2831 | |
363 | while (k < (N >> 1)) |
2832 | if (revents & EV_READ) |
|
|
2833 | { |
|
|
2834 | #if EV_USE_EVENTFD |
|
|
2835 | if (evpipe [0] < 0) |
|
|
2836 | { |
|
|
2837 | uint64_t counter; |
|
|
2838 | read (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2839 | } |
|
|
2840 | else |
|
|
2841 | #endif |
|
|
2842 | { |
|
|
2843 | char dummy[4]; |
|
|
2844 | #ifdef _WIN32 |
|
|
2845 | WSABUF buf; |
|
|
2846 | DWORD recvd; |
|
|
2847 | DWORD flags = 0; |
|
|
2848 | buf.buf = dummy; |
|
|
2849 | buf.len = sizeof (dummy); |
|
|
2850 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2851 | #else |
|
|
2852 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2853 | #endif |
|
|
2854 | } |
364 | { |
2855 | } |
365 | int j = k << 1; |
|
|
366 | |
2856 | |
367 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
2857 | pipe_write_skipped = 0; |
368 | ++j; |
|
|
369 | |
2858 | |
370 | if (w->at <= timers [j]->at) |
2859 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2860 | |
|
|
2861 | #if EV_SIGNAL_ENABLE |
|
|
2862 | if (sig_pending) |
|
|
2863 | { |
|
|
2864 | sig_pending = 0; |
|
|
2865 | |
|
|
2866 | ECB_MEMORY_FENCE; |
|
|
2867 | |
|
|
2868 | for (i = EV_NSIG - 1; i--; ) |
|
|
2869 | if (ecb_expect_false (signals [i].pending)) |
|
|
2870 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
2871 | } |
|
|
2872 | #endif |
|
|
2873 | |
|
|
2874 | #if EV_ASYNC_ENABLE |
|
|
2875 | if (async_pending) |
|
|
2876 | { |
|
|
2877 | async_pending = 0; |
|
|
2878 | |
|
|
2879 | ECB_MEMORY_FENCE; |
|
|
2880 | |
|
|
2881 | for (i = asynccnt; i--; ) |
|
|
2882 | if (asyncs [i]->sent) |
|
|
2883 | { |
|
|
2884 | asyncs [i]->sent = 0; |
|
|
2885 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2886 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
2887 | } |
|
|
2888 | } |
|
|
2889 | #endif |
|
|
2890 | } |
|
|
2891 | |
|
|
2892 | /*****************************************************************************/ |
|
|
2893 | |
|
|
2894 | void |
|
|
2895 | ev_feed_signal (int signum) EV_NOEXCEPT |
|
|
2896 | { |
|
|
2897 | #if EV_MULTIPLICITY |
|
|
2898 | EV_P; |
|
|
2899 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2900 | EV_A = signals [signum - 1].loop; |
|
|
2901 | |
|
|
2902 | if (!EV_A) |
|
|
2903 | return; |
|
|
2904 | #endif |
|
|
2905 | |
|
|
2906 | signals [signum - 1].pending = 1; |
|
|
2907 | evpipe_write (EV_A_ &sig_pending); |
|
|
2908 | } |
|
|
2909 | |
|
|
2910 | static void |
|
|
2911 | ev_sighandler (int signum) |
|
|
2912 | { |
|
|
2913 | #ifdef _WIN32 |
|
|
2914 | signal (signum, ev_sighandler); |
|
|
2915 | #endif |
|
|
2916 | |
|
|
2917 | ev_feed_signal (signum); |
|
|
2918 | } |
|
|
2919 | |
|
|
2920 | ecb_noinline |
|
|
2921 | void |
|
|
2922 | ev_feed_signal_event (EV_P_ int signum) EV_NOEXCEPT |
|
|
2923 | { |
|
|
2924 | WL w; |
|
|
2925 | |
|
|
2926 | if (ecb_expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2927 | return; |
|
|
2928 | |
|
|
2929 | --signum; |
|
|
2930 | |
|
|
2931 | #if EV_MULTIPLICITY |
|
|
2932 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
2933 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
2934 | |
|
|
2935 | if (ecb_expect_false (signals [signum].loop != EV_A)) |
|
|
2936 | return; |
|
|
2937 | #endif |
|
|
2938 | |
|
|
2939 | signals [signum].pending = 0; |
|
|
2940 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2941 | |
|
|
2942 | for (w = signals [signum].head; w; w = w->next) |
|
|
2943 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
2944 | } |
|
|
2945 | |
|
|
2946 | #if EV_USE_SIGNALFD |
|
|
2947 | static void |
|
|
2948 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
2949 | { |
|
|
2950 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
2951 | |
|
|
2952 | for (;;) |
|
|
2953 | { |
|
|
2954 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
2955 | |
|
|
2956 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
2957 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2958 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
2959 | |
|
|
2960 | if (res < (ssize_t)sizeof (si)) |
371 | break; |
2961 | break; |
372 | |
|
|
373 | timers [k] = timers [j]; |
|
|
374 | timers [k]->active = k + 1; |
|
|
375 | k = j; |
|
|
376 | } |
2962 | } |
377 | |
|
|
378 | timers [k] = w; |
|
|
379 | timers [k]->active = k + 1; |
|
|
380 | } |
2963 | } |
|
|
2964 | #endif |
|
|
2965 | |
|
|
2966 | #endif |
381 | |
2967 | |
382 | /*****************************************************************************/ |
2968 | /*****************************************************************************/ |
383 | |
2969 | |
384 | typedef struct |
2970 | #if EV_CHILD_ENABLE |
385 | { |
2971 | static WL childs [EV_PID_HASHSIZE]; |
386 | struct ev_signal *head; |
|
|
387 | sig_atomic_t volatile gotsig; |
|
|
388 | } ANSIG; |
|
|
389 | |
2972 | |
390 | static ANSIG *signals; |
|
|
391 | static int signalmax; |
|
|
392 | |
|
|
393 | static int sigpipe [2]; |
|
|
394 | static sig_atomic_t volatile gotsig; |
|
|
395 | static struct ev_io sigev; |
|
|
396 | |
|
|
397 | static void |
|
|
398 | signals_init (ANSIG *base, int count) |
|
|
399 | { |
|
|
400 | while (count--) |
|
|
401 | { |
|
|
402 | base->head = 0; |
|
|
403 | base->gotsig = 0; |
|
|
404 | |
|
|
405 | ++base; |
|
|
406 | } |
|
|
407 | } |
|
|
408 | |
|
|
409 | static void |
|
|
410 | sighandler (int signum) |
|
|
411 | { |
|
|
412 | signals [signum - 1].gotsig = 1; |
|
|
413 | |
|
|
414 | if (!gotsig) |
|
|
415 | { |
|
|
416 | gotsig = 1; |
|
|
417 | write (sigpipe [1], &signum, 1); |
|
|
418 | } |
|
|
419 | } |
|
|
420 | |
|
|
421 | static void |
|
|
422 | sigcb (struct ev_io *iow, int revents) |
|
|
423 | { |
|
|
424 | struct ev_signal *w; |
|
|
425 | int signum; |
|
|
426 | |
|
|
427 | read (sigpipe [0], &revents, 1); |
|
|
428 | gotsig = 0; |
|
|
429 | |
|
|
430 | for (signum = signalmax; signum--; ) |
|
|
431 | if (signals [signum].gotsig) |
|
|
432 | { |
|
|
433 | signals [signum].gotsig = 0; |
|
|
434 | |
|
|
435 | for (w = signals [signum].head; w; w = w->next) |
|
|
436 | event ((W)w, EV_SIGNAL); |
|
|
437 | } |
|
|
438 | } |
|
|
439 | |
|
|
440 | static void |
|
|
441 | siginit (void) |
|
|
442 | { |
|
|
443 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
444 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
445 | |
|
|
446 | /* rather than sort out wether we really need nb, set it */ |
|
|
447 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
448 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
449 | |
|
|
450 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
451 | ev_io_start (&sigev); |
|
|
452 | } |
|
|
453 | |
|
|
454 | /*****************************************************************************/ |
|
|
455 | |
|
|
456 | static struct ev_idle **idles; |
|
|
457 | static int idlemax, idlecnt; |
|
|
458 | |
|
|
459 | static struct ev_prepare **prepares; |
|
|
460 | static int preparemax, preparecnt; |
|
|
461 | |
|
|
462 | static struct ev_check **checks; |
|
|
463 | static int checkmax, checkcnt; |
|
|
464 | |
|
|
465 | /*****************************************************************************/ |
|
|
466 | |
|
|
467 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
468 | static struct ev_signal childev; |
2973 | static ev_signal childev; |
|
|
2974 | |
|
|
2975 | #ifndef WIFCONTINUED |
|
|
2976 | # define WIFCONTINUED(status) 0 |
|
|
2977 | #endif |
|
|
2978 | |
|
|
2979 | /* handle a single child status event */ |
|
|
2980 | inline_speed void |
|
|
2981 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
2982 | { |
|
|
2983 | ev_child *w; |
|
|
2984 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
2985 | |
|
|
2986 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2987 | { |
|
|
2988 | if ((w->pid == pid || !w->pid) |
|
|
2989 | && (!traced || (w->flags & 1))) |
|
|
2990 | { |
|
|
2991 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
2992 | w->rpid = pid; |
|
|
2993 | w->rstatus = status; |
|
|
2994 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
2995 | } |
|
|
2996 | } |
|
|
2997 | } |
469 | |
2998 | |
470 | #ifndef WCONTINUED |
2999 | #ifndef WCONTINUED |
471 | # define WCONTINUED 0 |
3000 | # define WCONTINUED 0 |
472 | #endif |
3001 | #endif |
473 | |
3002 | |
|
|
3003 | /* called on sigchld etc., calls waitpid */ |
474 | static void |
3004 | static void |
475 | childcb (struct ev_signal *sw, int revents) |
3005 | childcb (EV_P_ ev_signal *sw, int revents) |
476 | { |
3006 | { |
477 | struct ev_child *w; |
|
|
478 | int pid, status; |
3007 | int pid, status; |
479 | |
3008 | |
|
|
3009 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
480 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
3010 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
481 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
3011 | if (!WCONTINUED |
482 | if (w->pid == pid || !w->pid) |
3012 | || errno != EINVAL |
|
|
3013 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
3014 | return; |
|
|
3015 | |
|
|
3016 | /* make sure we are called again until all children have been reaped */ |
|
|
3017 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
3018 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
3019 | |
|
|
3020 | child_reap (EV_A_ pid, pid, status); |
|
|
3021 | if ((EV_PID_HASHSIZE) > 1) |
|
|
3022 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
3023 | } |
|
|
3024 | |
|
|
3025 | #endif |
|
|
3026 | |
|
|
3027 | /*****************************************************************************/ |
|
|
3028 | |
|
|
3029 | #if EV_USE_TIMERFD |
|
|
3030 | |
|
|
3031 | static void periodics_reschedule (EV_P); |
|
|
3032 | |
|
|
3033 | static void |
|
|
3034 | timerfdcb (EV_P_ ev_io *iow, int revents) |
|
|
3035 | { |
|
|
3036 | struct itimerspec its = { 0 }; |
|
|
3037 | |
|
|
3038 | its.it_value.tv_sec = ev_rt_now + (int)MAX_BLOCKTIME2; |
|
|
3039 | timerfd_settime (timerfd, TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET, &its, 0); |
|
|
3040 | |
|
|
3041 | ev_rt_now = ev_time (); |
|
|
3042 | /* periodics_reschedule only needs ev_rt_now */ |
|
|
3043 | /* but maybe in the future we want the full treatment. */ |
|
|
3044 | /* |
|
|
3045 | now_floor = EV_TS_CONST (0.); |
|
|
3046 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
3047 | */ |
|
|
3048 | #if EV_PERIODIC_ENABLE |
|
|
3049 | periodics_reschedule (EV_A); |
|
|
3050 | #endif |
|
|
3051 | } |
|
|
3052 | |
|
|
3053 | ecb_noinline ecb_cold |
|
|
3054 | static void |
|
|
3055 | evtimerfd_init (EV_P) |
|
|
3056 | { |
|
|
3057 | if (!ev_is_active (&timerfd_w)) |
|
|
3058 | { |
|
|
3059 | timerfd = timerfd_create (CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC); |
|
|
3060 | |
|
|
3061 | if (timerfd >= 0) |
483 | { |
3062 | { |
484 | w->status = status; |
3063 | fd_intern (timerfd); /* just to be sure */ |
485 | event ((W)w, EV_CHILD); |
3064 | |
|
|
3065 | ev_io_init (&timerfd_w, timerfdcb, timerfd, EV_READ); |
|
|
3066 | ev_set_priority (&timerfd_w, EV_MINPRI); |
|
|
3067 | ev_io_start (EV_A_ &timerfd_w); |
|
|
3068 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
3069 | |
|
|
3070 | /* (re-) arm timer */ |
|
|
3071 | timerfdcb (EV_A_ 0, 0); |
486 | } |
3072 | } |
|
|
3073 | } |
487 | } |
3074 | } |
|
|
3075 | |
|
|
3076 | #endif |
488 | |
3077 | |
489 | /*****************************************************************************/ |
3078 | /*****************************************************************************/ |
490 | |
3079 | |
|
|
3080 | #if EV_USE_IOCP |
|
|
3081 | # include "ev_iocp.c" |
|
|
3082 | #endif |
|
|
3083 | #if EV_USE_PORT |
|
|
3084 | # include "ev_port.c" |
|
|
3085 | #endif |
491 | #if EV_USE_KQUEUE |
3086 | #if EV_USE_KQUEUE |
492 | # include "ev_kqueue.c" |
3087 | # include "ev_kqueue.c" |
493 | #endif |
3088 | #endif |
494 | #if EV_USE_EPOLL |
3089 | #if EV_USE_EPOLL |
495 | # include "ev_epoll.c" |
3090 | # include "ev_epoll.c" |
496 | #endif |
3091 | #endif |
|
|
3092 | #if EV_USE_LINUXAIO |
|
|
3093 | # include "ev_linuxaio.c" |
|
|
3094 | #endif |
|
|
3095 | #if EV_USE_IOURING |
|
|
3096 | # include "ev_iouring.c" |
|
|
3097 | #endif |
497 | #if EV_USE_POLL |
3098 | #if EV_USE_POLL |
498 | # include "ev_poll.c" |
3099 | # include "ev_poll.c" |
499 | #endif |
3100 | #endif |
500 | #if EV_USE_SELECT |
3101 | #if EV_USE_SELECT |
501 | # include "ev_select.c" |
3102 | # include "ev_select.c" |
502 | #endif |
3103 | #endif |
503 | |
3104 | |
504 | int |
3105 | ecb_cold int |
505 | ev_version_major (void) |
3106 | ev_version_major (void) EV_NOEXCEPT |
506 | { |
3107 | { |
507 | return EV_VERSION_MAJOR; |
3108 | return EV_VERSION_MAJOR; |
508 | } |
3109 | } |
509 | |
3110 | |
510 | int |
3111 | ecb_cold int |
511 | ev_version_minor (void) |
3112 | ev_version_minor (void) EV_NOEXCEPT |
512 | { |
3113 | { |
513 | return EV_VERSION_MINOR; |
3114 | return EV_VERSION_MINOR; |
514 | } |
3115 | } |
515 | |
3116 | |
516 | /* return true if we are running with elevated privileges and ignore env variables */ |
3117 | /* return true if we are running with elevated privileges and should ignore env variables */ |
517 | static int |
3118 | inline_size ecb_cold int |
518 | enable_secure () |
3119 | enable_secure (void) |
519 | { |
3120 | { |
|
|
3121 | #ifdef _WIN32 |
|
|
3122 | return 0; |
|
|
3123 | #else |
520 | return getuid () != geteuid () |
3124 | return getuid () != geteuid () |
521 | || getgid () != getegid (); |
3125 | || getgid () != getegid (); |
|
|
3126 | #endif |
522 | } |
3127 | } |
523 | |
3128 | |
524 | int ev_init (int methods) |
3129 | ecb_cold |
|
|
3130 | unsigned int |
|
|
3131 | ev_supported_backends (void) EV_NOEXCEPT |
525 | { |
3132 | { |
526 | if (!ev_method) |
3133 | unsigned int flags = 0; |
|
|
3134 | |
|
|
3135 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
3136 | if (EV_USE_KQUEUE ) flags |= EVBACKEND_KQUEUE; |
|
|
3137 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
3138 | if (EV_USE_LINUXAIO ) flags |= EVBACKEND_LINUXAIO; |
|
|
3139 | if (EV_USE_IOURING && ev_linux_version () >= 0x050601) flags |= EVBACKEND_IOURING; /* 5.6.1+ */ |
|
|
3140 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
3141 | if (EV_USE_SELECT ) flags |= EVBACKEND_SELECT; |
|
|
3142 | |
|
|
3143 | return flags; |
|
|
3144 | } |
|
|
3145 | |
|
|
3146 | ecb_cold |
|
|
3147 | unsigned int |
|
|
3148 | ev_recommended_backends (void) EV_NOEXCEPT |
|
|
3149 | { |
|
|
3150 | unsigned int flags = ev_supported_backends (); |
|
|
3151 | |
|
|
3152 | #ifndef __NetBSD__ |
|
|
3153 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
3154 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
3155 | flags &= ~EVBACKEND_KQUEUE; |
|
|
3156 | #endif |
|
|
3157 | #ifdef __APPLE__ |
|
|
3158 | /* only select works correctly on that "unix-certified" platform */ |
|
|
3159 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
3160 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
3161 | #endif |
|
|
3162 | #ifdef __FreeBSD__ |
|
|
3163 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
3164 | #endif |
|
|
3165 | |
|
|
3166 | /* TODO: linuxaio is very experimental */ |
|
|
3167 | #if !EV_RECOMMEND_LINUXAIO |
|
|
3168 | flags &= ~EVBACKEND_LINUXAIO; |
|
|
3169 | #endif |
|
|
3170 | /* TODO: iouring is super experimental */ |
|
|
3171 | #if !EV_RECOMMEND_IOURING |
|
|
3172 | flags &= ~EVBACKEND_IOURING; |
|
|
3173 | #endif |
|
|
3174 | |
|
|
3175 | return flags; |
|
|
3176 | } |
|
|
3177 | |
|
|
3178 | ecb_cold |
|
|
3179 | unsigned int |
|
|
3180 | ev_embeddable_backends (void) EV_NOEXCEPT |
|
|
3181 | { |
|
|
3182 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT | EVBACKEND_IOURING; |
|
|
3183 | |
|
|
3184 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
3185 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
3186 | flags &= ~EVBACKEND_EPOLL; |
|
|
3187 | |
|
|
3188 | /* EVBACKEND_LINUXAIO is theoretically embeddable, but suffers from a performance overhead */ |
|
|
3189 | |
|
|
3190 | return flags; |
|
|
3191 | } |
|
|
3192 | |
|
|
3193 | unsigned int |
|
|
3194 | ev_backend (EV_P) EV_NOEXCEPT |
|
|
3195 | { |
|
|
3196 | return backend; |
|
|
3197 | } |
|
|
3198 | |
|
|
3199 | #if EV_FEATURE_API |
|
|
3200 | unsigned int |
|
|
3201 | ev_iteration (EV_P) EV_NOEXCEPT |
|
|
3202 | { |
|
|
3203 | return loop_count; |
|
|
3204 | } |
|
|
3205 | |
|
|
3206 | unsigned int |
|
|
3207 | ev_depth (EV_P) EV_NOEXCEPT |
|
|
3208 | { |
|
|
3209 | return loop_depth; |
|
|
3210 | } |
|
|
3211 | |
|
|
3212 | void |
|
|
3213 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
|
|
3214 | { |
|
|
3215 | io_blocktime = interval; |
|
|
3216 | } |
|
|
3217 | |
|
|
3218 | void |
|
|
3219 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_NOEXCEPT |
|
|
3220 | { |
|
|
3221 | timeout_blocktime = interval; |
|
|
3222 | } |
|
|
3223 | |
|
|
3224 | void |
|
|
3225 | ev_set_userdata (EV_P_ void *data) EV_NOEXCEPT |
|
|
3226 | { |
|
|
3227 | userdata = data; |
|
|
3228 | } |
|
|
3229 | |
|
|
3230 | void * |
|
|
3231 | ev_userdata (EV_P) EV_NOEXCEPT |
|
|
3232 | { |
|
|
3233 | return userdata; |
|
|
3234 | } |
|
|
3235 | |
|
|
3236 | void |
|
|
3237 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_NOEXCEPT |
|
|
3238 | { |
|
|
3239 | invoke_cb = invoke_pending_cb; |
|
|
3240 | } |
|
|
3241 | |
|
|
3242 | void |
|
|
3243 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_NOEXCEPT, void (*acquire)(EV_P) EV_NOEXCEPT) EV_NOEXCEPT |
|
|
3244 | { |
|
|
3245 | release_cb = release; |
|
|
3246 | acquire_cb = acquire; |
|
|
3247 | } |
|
|
3248 | #endif |
|
|
3249 | |
|
|
3250 | /* initialise a loop structure, must be zero-initialised */ |
|
|
3251 | ecb_noinline ecb_cold |
|
|
3252 | static void |
|
|
3253 | loop_init (EV_P_ unsigned int flags) EV_NOEXCEPT |
|
|
3254 | { |
|
|
3255 | if (!backend) |
527 | { |
3256 | { |
|
|
3257 | origflags = flags; |
|
|
3258 | |
|
|
3259 | #if EV_USE_REALTIME |
|
|
3260 | if (!have_realtime) |
|
|
3261 | { |
|
|
3262 | struct timespec ts; |
|
|
3263 | |
|
|
3264 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
3265 | have_realtime = 1; |
|
|
3266 | } |
|
|
3267 | #endif |
|
|
3268 | |
528 | #if EV_USE_MONOTONIC |
3269 | #if EV_USE_MONOTONIC |
|
|
3270 | if (!have_monotonic) |
|
|
3271 | { |
|
|
3272 | struct timespec ts; |
|
|
3273 | |
|
|
3274 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
3275 | have_monotonic = 1; |
|
|
3276 | } |
|
|
3277 | #endif |
|
|
3278 | |
|
|
3279 | /* pid check not overridable via env */ |
|
|
3280 | #ifndef _WIN32 |
|
|
3281 | if (flags & EVFLAG_FORKCHECK) |
|
|
3282 | curpid = getpid (); |
|
|
3283 | #endif |
|
|
3284 | |
|
|
3285 | if (!(flags & EVFLAG_NOENV) |
|
|
3286 | && !enable_secure () |
|
|
3287 | && getenv ("LIBEV_FLAGS")) |
|
|
3288 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
3289 | |
|
|
3290 | ev_rt_now = ev_time (); |
|
|
3291 | mn_now = get_clock (); |
|
|
3292 | now_floor = mn_now; |
|
|
3293 | rtmn_diff = ev_rt_now - mn_now; |
|
|
3294 | #if EV_FEATURE_API |
|
|
3295 | invoke_cb = ev_invoke_pending; |
|
|
3296 | #endif |
|
|
3297 | |
|
|
3298 | io_blocktime = 0.; |
|
|
3299 | timeout_blocktime = 0.; |
|
|
3300 | backend = 0; |
|
|
3301 | backend_fd = -1; |
|
|
3302 | sig_pending = 0; |
|
|
3303 | #if EV_ASYNC_ENABLE |
|
|
3304 | async_pending = 0; |
|
|
3305 | #endif |
|
|
3306 | pipe_write_skipped = 0; |
|
|
3307 | pipe_write_wanted = 0; |
|
|
3308 | evpipe [0] = -1; |
|
|
3309 | evpipe [1] = -1; |
|
|
3310 | #if EV_USE_INOTIFY |
|
|
3311 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
3312 | #endif |
|
|
3313 | #if EV_USE_SIGNALFD |
|
|
3314 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
3315 | #endif |
|
|
3316 | #if EV_USE_TIMERFD |
|
|
3317 | timerfd = flags & EVFLAG_NOTIMERFD ? -1 : -2; |
|
|
3318 | #endif |
|
|
3319 | |
|
|
3320 | if (!(flags & EVBACKEND_MASK)) |
|
|
3321 | flags |= ev_recommended_backends (); |
|
|
3322 | |
|
|
3323 | #if EV_USE_IOCP |
|
|
3324 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
3325 | #endif |
|
|
3326 | #if EV_USE_PORT |
|
|
3327 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
3328 | #endif |
|
|
3329 | #if EV_USE_KQUEUE |
|
|
3330 | if (!backend && (flags & EVBACKEND_KQUEUE )) backend = kqueue_init (EV_A_ flags); |
|
|
3331 | #endif |
|
|
3332 | #if EV_USE_IOURING |
|
|
3333 | if (!backend && (flags & EVBACKEND_IOURING )) backend = iouring_init (EV_A_ flags); |
|
|
3334 | #endif |
|
|
3335 | #if EV_USE_LINUXAIO |
|
|
3336 | if (!backend && (flags & EVBACKEND_LINUXAIO)) backend = linuxaio_init (EV_A_ flags); |
|
|
3337 | #endif |
|
|
3338 | #if EV_USE_EPOLL |
|
|
3339 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
3340 | #endif |
|
|
3341 | #if EV_USE_POLL |
|
|
3342 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
3343 | #endif |
|
|
3344 | #if EV_USE_SELECT |
|
|
3345 | if (!backend && (flags & EVBACKEND_SELECT )) backend = select_init (EV_A_ flags); |
|
|
3346 | #endif |
|
|
3347 | |
|
|
3348 | ev_prepare_init (&pending_w, pendingcb); |
|
|
3349 | |
|
|
3350 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
3351 | ev_init (&pipe_w, pipecb); |
|
|
3352 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
3353 | #endif |
|
|
3354 | } |
|
|
3355 | } |
|
|
3356 | |
|
|
3357 | /* free up a loop structure */ |
|
|
3358 | ecb_cold |
|
|
3359 | void |
|
|
3360 | ev_loop_destroy (EV_P) |
|
|
3361 | { |
|
|
3362 | int i; |
|
|
3363 | |
|
|
3364 | #if EV_MULTIPLICITY |
|
|
3365 | /* mimic free (0) */ |
|
|
3366 | if (!EV_A) |
|
|
3367 | return; |
|
|
3368 | #endif |
|
|
3369 | |
|
|
3370 | #if EV_CLEANUP_ENABLE |
|
|
3371 | /* queue cleanup watchers (and execute them) */ |
|
|
3372 | if (ecb_expect_false (cleanupcnt)) |
|
|
3373 | { |
|
|
3374 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
3375 | EV_INVOKE_PENDING; |
|
|
3376 | } |
|
|
3377 | #endif |
|
|
3378 | |
|
|
3379 | #if EV_CHILD_ENABLE |
|
|
3380 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
3381 | { |
|
|
3382 | ev_ref (EV_A); /* child watcher */ |
|
|
3383 | ev_signal_stop (EV_A_ &childev); |
|
|
3384 | } |
|
|
3385 | #endif |
|
|
3386 | |
|
|
3387 | if (ev_is_active (&pipe_w)) |
|
|
3388 | { |
|
|
3389 | /*ev_ref (EV_A);*/ |
|
|
3390 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
3391 | |
|
|
3392 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
3393 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
3394 | } |
|
|
3395 | |
|
|
3396 | #if EV_USE_SIGNALFD |
|
|
3397 | if (ev_is_active (&sigfd_w)) |
|
|
3398 | close (sigfd); |
|
|
3399 | #endif |
|
|
3400 | |
|
|
3401 | #if EV_USE_TIMERFD |
|
|
3402 | if (ev_is_active (&timerfd_w)) |
|
|
3403 | close (timerfd); |
|
|
3404 | #endif |
|
|
3405 | |
|
|
3406 | #if EV_USE_INOTIFY |
|
|
3407 | if (fs_fd >= 0) |
|
|
3408 | close (fs_fd); |
|
|
3409 | #endif |
|
|
3410 | |
|
|
3411 | if (backend_fd >= 0) |
|
|
3412 | close (backend_fd); |
|
|
3413 | |
|
|
3414 | #if EV_USE_IOCP |
|
|
3415 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
3416 | #endif |
|
|
3417 | #if EV_USE_PORT |
|
|
3418 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
3419 | #endif |
|
|
3420 | #if EV_USE_KQUEUE |
|
|
3421 | if (backend == EVBACKEND_KQUEUE ) kqueue_destroy (EV_A); |
|
|
3422 | #endif |
|
|
3423 | #if EV_USE_IOURING |
|
|
3424 | if (backend == EVBACKEND_IOURING ) iouring_destroy (EV_A); |
|
|
3425 | #endif |
|
|
3426 | #if EV_USE_LINUXAIO |
|
|
3427 | if (backend == EVBACKEND_LINUXAIO) linuxaio_destroy (EV_A); |
|
|
3428 | #endif |
|
|
3429 | #if EV_USE_EPOLL |
|
|
3430 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
3431 | #endif |
|
|
3432 | #if EV_USE_POLL |
|
|
3433 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
3434 | #endif |
|
|
3435 | #if EV_USE_SELECT |
|
|
3436 | if (backend == EVBACKEND_SELECT ) select_destroy (EV_A); |
|
|
3437 | #endif |
|
|
3438 | |
|
|
3439 | for (i = NUMPRI; i--; ) |
|
|
3440 | { |
|
|
3441 | array_free (pending, [i]); |
|
|
3442 | #if EV_IDLE_ENABLE |
|
|
3443 | array_free (idle, [i]); |
|
|
3444 | #endif |
|
|
3445 | } |
|
|
3446 | |
|
|
3447 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
3448 | |
|
|
3449 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
3450 | array_free (rfeed, EMPTY); |
|
|
3451 | array_free (fdchange, EMPTY); |
|
|
3452 | array_free (timer, EMPTY); |
|
|
3453 | #if EV_PERIODIC_ENABLE |
|
|
3454 | array_free (periodic, EMPTY); |
|
|
3455 | #endif |
|
|
3456 | #if EV_FORK_ENABLE |
|
|
3457 | array_free (fork, EMPTY); |
|
|
3458 | #endif |
|
|
3459 | #if EV_CLEANUP_ENABLE |
|
|
3460 | array_free (cleanup, EMPTY); |
|
|
3461 | #endif |
|
|
3462 | array_free (prepare, EMPTY); |
|
|
3463 | array_free (check, EMPTY); |
|
|
3464 | #if EV_ASYNC_ENABLE |
|
|
3465 | array_free (async, EMPTY); |
|
|
3466 | #endif |
|
|
3467 | |
|
|
3468 | backend = 0; |
|
|
3469 | |
|
|
3470 | #if EV_MULTIPLICITY |
|
|
3471 | if (ev_is_default_loop (EV_A)) |
|
|
3472 | #endif |
|
|
3473 | ev_default_loop_ptr = 0; |
|
|
3474 | #if EV_MULTIPLICITY |
|
|
3475 | else |
|
|
3476 | ev_free (EV_A); |
|
|
3477 | #endif |
|
|
3478 | } |
|
|
3479 | |
|
|
3480 | #if EV_USE_INOTIFY |
|
|
3481 | inline_size void infy_fork (EV_P); |
|
|
3482 | #endif |
|
|
3483 | |
|
|
3484 | inline_size void |
|
|
3485 | loop_fork (EV_P) |
|
|
3486 | { |
|
|
3487 | #if EV_USE_PORT |
|
|
3488 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
3489 | #endif |
|
|
3490 | #if EV_USE_KQUEUE |
|
|
3491 | if (backend == EVBACKEND_KQUEUE ) kqueue_fork (EV_A); |
|
|
3492 | #endif |
|
|
3493 | #if EV_USE_IOURING |
|
|
3494 | if (backend == EVBACKEND_IOURING ) iouring_fork (EV_A); |
|
|
3495 | #endif |
|
|
3496 | #if EV_USE_LINUXAIO |
|
|
3497 | if (backend == EVBACKEND_LINUXAIO) linuxaio_fork (EV_A); |
|
|
3498 | #endif |
|
|
3499 | #if EV_USE_EPOLL |
|
|
3500 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
3501 | #endif |
|
|
3502 | #if EV_USE_INOTIFY |
|
|
3503 | infy_fork (EV_A); |
|
|
3504 | #endif |
|
|
3505 | |
|
|
3506 | if (postfork != 2) |
|
|
3507 | { |
|
|
3508 | #if EV_USE_SIGNALFD |
|
|
3509 | /* surprisingly, nothing needs to be done for signalfd, accoridng to docs, it does the right thing on fork */ |
|
|
3510 | #endif |
|
|
3511 | |
|
|
3512 | #if EV_USE_TIMERFD |
|
|
3513 | if (ev_is_active (&timerfd_w)) |
|
|
3514 | { |
|
|
3515 | ev_ref (EV_A); |
|
|
3516 | ev_io_stop (EV_A_ &timerfd_w); |
|
|
3517 | |
|
|
3518 | close (timerfd); |
|
|
3519 | timerfd = -2; |
|
|
3520 | |
|
|
3521 | evtimerfd_init (EV_A); |
|
|
3522 | /* reschedule periodics, in case we missed something */ |
|
|
3523 | ev_feed_event (EV_A_ &timerfd_w, EV_CUSTOM); |
|
|
3524 | } |
|
|
3525 | #endif |
|
|
3526 | |
|
|
3527 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
3528 | if (ev_is_active (&pipe_w)) |
|
|
3529 | { |
|
|
3530 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
3531 | |
|
|
3532 | ev_ref (EV_A); |
|
|
3533 | ev_io_stop (EV_A_ &pipe_w); |
|
|
3534 | |
|
|
3535 | if (evpipe [0] >= 0) |
|
|
3536 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
3537 | |
|
|
3538 | evpipe_init (EV_A); |
|
|
3539 | /* iterate over everything, in case we missed something before */ |
|
|
3540 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3541 | } |
|
|
3542 | #endif |
|
|
3543 | } |
|
|
3544 | |
|
|
3545 | postfork = 0; |
|
|
3546 | } |
|
|
3547 | |
|
|
3548 | #if EV_MULTIPLICITY |
|
|
3549 | |
|
|
3550 | ecb_cold |
|
|
3551 | struct ev_loop * |
|
|
3552 | ev_loop_new (unsigned int flags) EV_NOEXCEPT |
|
|
3553 | { |
|
|
3554 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
3555 | |
|
|
3556 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
3557 | loop_init (EV_A_ flags); |
|
|
3558 | |
|
|
3559 | if (ev_backend (EV_A)) |
|
|
3560 | return EV_A; |
|
|
3561 | |
|
|
3562 | ev_free (EV_A); |
|
|
3563 | return 0; |
|
|
3564 | } |
|
|
3565 | |
|
|
3566 | #endif /* multiplicity */ |
|
|
3567 | |
|
|
3568 | #if EV_VERIFY |
|
|
3569 | ecb_noinline ecb_cold |
|
|
3570 | static void |
|
|
3571 | verify_watcher (EV_P_ W w) |
|
|
3572 | { |
|
|
3573 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
3574 | |
|
|
3575 | if (w->pending) |
|
|
3576 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
3577 | } |
|
|
3578 | |
|
|
3579 | ecb_noinline ecb_cold |
|
|
3580 | static void |
|
|
3581 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
3582 | { |
|
|
3583 | int i; |
|
|
3584 | |
|
|
3585 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
3586 | { |
|
|
3587 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
3588 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
3589 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
3590 | |
|
|
3591 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
3592 | } |
|
|
3593 | } |
|
|
3594 | |
|
|
3595 | ecb_noinline ecb_cold |
|
|
3596 | static void |
|
|
3597 | array_verify (EV_P_ W *ws, int cnt) |
|
|
3598 | { |
|
|
3599 | while (cnt--) |
|
|
3600 | { |
|
|
3601 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
3602 | verify_watcher (EV_A_ ws [cnt]); |
|
|
3603 | } |
|
|
3604 | } |
|
|
3605 | #endif |
|
|
3606 | |
|
|
3607 | #if EV_FEATURE_API |
|
|
3608 | void ecb_cold |
|
|
3609 | ev_verify (EV_P) EV_NOEXCEPT |
|
|
3610 | { |
|
|
3611 | #if EV_VERIFY |
|
|
3612 | int i; |
|
|
3613 | WL w, w2; |
|
|
3614 | |
|
|
3615 | assert (activecnt >= -1); |
|
|
3616 | |
|
|
3617 | assert (fdchangemax >= fdchangecnt); |
|
|
3618 | for (i = 0; i < fdchangecnt; ++i) |
|
|
3619 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
3620 | |
|
|
3621 | assert (anfdmax >= 0); |
|
|
3622 | for (i = 0; i < anfdmax; ++i) |
|
|
3623 | { |
|
|
3624 | int j = 0; |
|
|
3625 | |
|
|
3626 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
3627 | { |
|
|
3628 | verify_watcher (EV_A_ (W)w); |
|
|
3629 | |
|
|
3630 | if (j++ & 1) |
|
|
3631 | { |
|
|
3632 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
3633 | w2 = w2->next; |
|
|
3634 | } |
|
|
3635 | |
|
|
3636 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
3637 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
3638 | } |
|
|
3639 | } |
|
|
3640 | |
|
|
3641 | assert (timermax >= timercnt); |
|
|
3642 | verify_heap (EV_A_ timers, timercnt); |
|
|
3643 | |
|
|
3644 | #if EV_PERIODIC_ENABLE |
|
|
3645 | assert (periodicmax >= periodiccnt); |
|
|
3646 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
3647 | #endif |
|
|
3648 | |
|
|
3649 | for (i = NUMPRI; i--; ) |
|
|
3650 | { |
|
|
3651 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
3652 | #if EV_IDLE_ENABLE |
|
|
3653 | assert (idleall >= 0); |
|
|
3654 | assert (idlemax [i] >= idlecnt [i]); |
|
|
3655 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
3656 | #endif |
|
|
3657 | } |
|
|
3658 | |
|
|
3659 | #if EV_FORK_ENABLE |
|
|
3660 | assert (forkmax >= forkcnt); |
|
|
3661 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
3662 | #endif |
|
|
3663 | |
|
|
3664 | #if EV_CLEANUP_ENABLE |
|
|
3665 | assert (cleanupmax >= cleanupcnt); |
|
|
3666 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
3667 | #endif |
|
|
3668 | |
|
|
3669 | #if EV_ASYNC_ENABLE |
|
|
3670 | assert (asyncmax >= asynccnt); |
|
|
3671 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
3672 | #endif |
|
|
3673 | |
|
|
3674 | #if EV_PREPARE_ENABLE |
|
|
3675 | assert (preparemax >= preparecnt); |
|
|
3676 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
3677 | #endif |
|
|
3678 | |
|
|
3679 | #if EV_CHECK_ENABLE |
|
|
3680 | assert (checkmax >= checkcnt); |
|
|
3681 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
3682 | #endif |
|
|
3683 | |
|
|
3684 | # if 0 |
|
|
3685 | #if EV_CHILD_ENABLE |
|
|
3686 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
3687 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
3688 | #endif |
|
|
3689 | # endif |
|
|
3690 | #endif |
|
|
3691 | } |
|
|
3692 | #endif |
|
|
3693 | |
|
|
3694 | #if EV_MULTIPLICITY |
|
|
3695 | ecb_cold |
|
|
3696 | struct ev_loop * |
|
|
3697 | #else |
|
|
3698 | int |
|
|
3699 | #endif |
|
|
3700 | ev_default_loop (unsigned int flags) EV_NOEXCEPT |
|
|
3701 | { |
|
|
3702 | if (!ev_default_loop_ptr) |
|
|
3703 | { |
|
|
3704 | #if EV_MULTIPLICITY |
|
|
3705 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
|
|
3706 | #else |
|
|
3707 | ev_default_loop_ptr = 1; |
|
|
3708 | #endif |
|
|
3709 | |
|
|
3710 | loop_init (EV_A_ flags); |
|
|
3711 | |
|
|
3712 | if (ev_backend (EV_A)) |
|
|
3713 | { |
|
|
3714 | #if EV_CHILD_ENABLE |
|
|
3715 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
3716 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
3717 | ev_signal_start (EV_A_ &childev); |
|
|
3718 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
3719 | #endif |
|
|
3720 | } |
|
|
3721 | else |
|
|
3722 | ev_default_loop_ptr = 0; |
|
|
3723 | } |
|
|
3724 | |
|
|
3725 | return ev_default_loop_ptr; |
|
|
3726 | } |
|
|
3727 | |
|
|
3728 | void |
|
|
3729 | ev_loop_fork (EV_P) EV_NOEXCEPT |
|
|
3730 | { |
|
|
3731 | postfork = 1; |
|
|
3732 | } |
|
|
3733 | |
|
|
3734 | /*****************************************************************************/ |
|
|
3735 | |
|
|
3736 | void |
|
|
3737 | ev_invoke (EV_P_ void *w, int revents) |
|
|
3738 | { |
|
|
3739 | EV_CB_INVOKE ((W)w, revents); |
|
|
3740 | } |
|
|
3741 | |
|
|
3742 | unsigned int |
|
|
3743 | ev_pending_count (EV_P) EV_NOEXCEPT |
|
|
3744 | { |
|
|
3745 | int pri; |
|
|
3746 | unsigned int count = 0; |
|
|
3747 | |
|
|
3748 | for (pri = NUMPRI; pri--; ) |
|
|
3749 | count += pendingcnt [pri]; |
|
|
3750 | |
|
|
3751 | return count; |
|
|
3752 | } |
|
|
3753 | |
|
|
3754 | ecb_noinline |
|
|
3755 | void |
|
|
3756 | ev_invoke_pending (EV_P) |
|
|
3757 | { |
|
|
3758 | pendingpri = NUMPRI; |
|
|
3759 | |
|
|
3760 | do |
|
|
3761 | { |
|
|
3762 | --pendingpri; |
|
|
3763 | |
|
|
3764 | /* pendingpri possibly gets modified in the inner loop */ |
|
|
3765 | while (pendingcnt [pendingpri]) |
|
|
3766 | { |
|
|
3767 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
|
|
3768 | |
|
|
3769 | p->w->pending = 0; |
|
|
3770 | EV_CB_INVOKE (p->w, p->events); |
|
|
3771 | EV_FREQUENT_CHECK; |
|
|
3772 | } |
|
|
3773 | } |
|
|
3774 | while (pendingpri); |
|
|
3775 | } |
|
|
3776 | |
|
|
3777 | #if EV_IDLE_ENABLE |
|
|
3778 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3779 | /* only when higher priorities are idle" logic */ |
|
|
3780 | inline_size void |
|
|
3781 | idle_reify (EV_P) |
|
|
3782 | { |
|
|
3783 | if (ecb_expect_false (idleall)) |
|
|
3784 | { |
|
|
3785 | int pri; |
|
|
3786 | |
|
|
3787 | for (pri = NUMPRI; pri--; ) |
|
|
3788 | { |
|
|
3789 | if (pendingcnt [pri]) |
|
|
3790 | break; |
|
|
3791 | |
|
|
3792 | if (idlecnt [pri]) |
|
|
3793 | { |
|
|
3794 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
3795 | break; |
|
|
3796 | } |
|
|
3797 | } |
|
|
3798 | } |
|
|
3799 | } |
|
|
3800 | #endif |
|
|
3801 | |
|
|
3802 | /* make timers pending */ |
|
|
3803 | inline_size void |
|
|
3804 | timers_reify (EV_P) |
|
|
3805 | { |
|
|
3806 | EV_FREQUENT_CHECK; |
|
|
3807 | |
|
|
3808 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
3809 | { |
|
|
3810 | do |
|
|
3811 | { |
|
|
3812 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3813 | |
|
|
3814 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3815 | |
|
|
3816 | /* first reschedule or stop timer */ |
|
|
3817 | if (w->repeat) |
|
|
3818 | { |
|
|
3819 | ev_at (w) += w->repeat; |
|
|
3820 | if (ev_at (w) < mn_now) |
|
|
3821 | ev_at (w) = mn_now; |
|
|
3822 | |
|
|
3823 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > EV_TS_CONST (0.))); |
|
|
3824 | |
|
|
3825 | ANHE_at_cache (timers [HEAP0]); |
|
|
3826 | downheap (timers, timercnt, HEAP0); |
|
|
3827 | } |
|
|
3828 | else |
|
|
3829 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3830 | |
|
|
3831 | EV_FREQUENT_CHECK; |
|
|
3832 | feed_reverse (EV_A_ (W)w); |
|
|
3833 | } |
|
|
3834 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3835 | |
|
|
3836 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
3837 | } |
|
|
3838 | } |
|
|
3839 | |
|
|
3840 | #if EV_PERIODIC_ENABLE |
|
|
3841 | |
|
|
3842 | ecb_noinline |
|
|
3843 | static void |
|
|
3844 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3845 | { |
|
|
3846 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3847 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3848 | |
|
|
3849 | /* the above almost always errs on the low side */ |
|
|
3850 | while (at <= ev_rt_now) |
|
|
3851 | { |
|
|
3852 | ev_tstamp nat = at + w->interval; |
|
|
3853 | |
|
|
3854 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3855 | if (ecb_expect_false (nat == at)) |
|
|
3856 | { |
|
|
3857 | at = ev_rt_now; |
|
|
3858 | break; |
|
|
3859 | } |
|
|
3860 | |
|
|
3861 | at = nat; |
|
|
3862 | } |
|
|
3863 | |
|
|
3864 | ev_at (w) = at; |
|
|
3865 | } |
|
|
3866 | |
|
|
3867 | /* make periodics pending */ |
|
|
3868 | inline_size void |
|
|
3869 | periodics_reify (EV_P) |
|
|
3870 | { |
|
|
3871 | EV_FREQUENT_CHECK; |
|
|
3872 | |
|
|
3873 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3874 | { |
|
|
3875 | do |
|
|
3876 | { |
|
|
3877 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3878 | |
|
|
3879 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3880 | |
|
|
3881 | /* first reschedule or stop timer */ |
|
|
3882 | if (w->reschedule_cb) |
|
|
3883 | { |
|
|
3884 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3885 | |
|
|
3886 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3887 | |
|
|
3888 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3889 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3890 | } |
|
|
3891 | else if (w->interval) |
|
|
3892 | { |
|
|
3893 | periodic_recalc (EV_A_ w); |
|
|
3894 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3895 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3896 | } |
|
|
3897 | else |
|
|
3898 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3899 | |
|
|
3900 | EV_FREQUENT_CHECK; |
|
|
3901 | feed_reverse (EV_A_ (W)w); |
|
|
3902 | } |
|
|
3903 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3904 | |
|
|
3905 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3906 | } |
|
|
3907 | } |
|
|
3908 | |
|
|
3909 | /* simply recalculate all periodics */ |
|
|
3910 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3911 | ecb_noinline ecb_cold |
|
|
3912 | static void |
|
|
3913 | periodics_reschedule (EV_P) |
|
|
3914 | { |
|
|
3915 | int i; |
|
|
3916 | |
|
|
3917 | /* adjust periodics after time jump */ |
|
|
3918 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3919 | { |
|
|
3920 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3921 | |
|
|
3922 | if (w->reschedule_cb) |
|
|
3923 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3924 | else if (w->interval) |
|
|
3925 | periodic_recalc (EV_A_ w); |
|
|
3926 | |
|
|
3927 | ANHE_at_cache (periodics [i]); |
|
|
3928 | } |
|
|
3929 | |
|
|
3930 | reheap (periodics, periodiccnt); |
|
|
3931 | } |
|
|
3932 | #endif |
|
|
3933 | |
|
|
3934 | /* adjust all timers by a given offset */ |
|
|
3935 | ecb_noinline ecb_cold |
|
|
3936 | static void |
|
|
3937 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3938 | { |
|
|
3939 | int i; |
|
|
3940 | |
|
|
3941 | for (i = 0; i < timercnt; ++i) |
|
|
3942 | { |
|
|
3943 | ANHE *he = timers + i + HEAP0; |
|
|
3944 | ANHE_w (*he)->at += adjust; |
|
|
3945 | ANHE_at_cache (*he); |
|
|
3946 | } |
|
|
3947 | } |
|
|
3948 | |
|
|
3949 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3950 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3951 | inline_speed void |
|
|
3952 | time_update (EV_P_ ev_tstamp max_block) |
|
|
3953 | { |
|
|
3954 | #if EV_USE_MONOTONIC |
|
|
3955 | if (ecb_expect_true (have_monotonic)) |
|
|
3956 | { |
|
|
3957 | int i; |
|
|
3958 | ev_tstamp odiff = rtmn_diff; |
|
|
3959 | |
|
|
3960 | mn_now = get_clock (); |
|
|
3961 | |
|
|
3962 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
3963 | /* interpolate in the meantime */ |
|
|
3964 | if (ecb_expect_true (mn_now - now_floor < EV_TS_CONST (MIN_TIMEJUMP * .5))) |
|
|
3965 | { |
|
|
3966 | ev_rt_now = rtmn_diff + mn_now; |
|
|
3967 | return; |
|
|
3968 | } |
|
|
3969 | |
|
|
3970 | now_floor = mn_now; |
|
|
3971 | ev_rt_now = ev_time (); |
|
|
3972 | |
|
|
3973 | /* loop a few times, before making important decisions. |
|
|
3974 | * on the choice of "4": one iteration isn't enough, |
|
|
3975 | * in case we get preempted during the calls to |
|
|
3976 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
3977 | * to succeed in that case, though. and looping a few more times |
|
|
3978 | * doesn't hurt either as we only do this on time-jumps or |
|
|
3979 | * in the unlikely event of having been preempted here. |
|
|
3980 | */ |
|
|
3981 | for (i = 4; --i; ) |
|
|
3982 | { |
|
|
3983 | ev_tstamp diff; |
|
|
3984 | rtmn_diff = ev_rt_now - mn_now; |
|
|
3985 | |
|
|
3986 | diff = odiff - rtmn_diff; |
|
|
3987 | |
|
|
3988 | if (ecb_expect_true ((diff < EV_TS_CONST (0.) ? -diff : diff) < EV_TS_CONST (MIN_TIMEJUMP))) |
|
|
3989 | return; /* all is well */ |
|
|
3990 | |
|
|
3991 | ev_rt_now = ev_time (); |
|
|
3992 | mn_now = get_clock (); |
|
|
3993 | now_floor = mn_now; |
|
|
3994 | } |
|
|
3995 | |
|
|
3996 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3997 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
3998 | # if EV_PERIODIC_ENABLE |
|
|
3999 | periodics_reschedule (EV_A); |
|
|
4000 | # endif |
|
|
4001 | } |
|
|
4002 | else |
|
|
4003 | #endif |
|
|
4004 | { |
|
|
4005 | ev_rt_now = ev_time (); |
|
|
4006 | |
|
|
4007 | if (ecb_expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + EV_TS_CONST (MIN_TIMEJUMP))) |
|
|
4008 | { |
|
|
4009 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
4010 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
4011 | #if EV_PERIODIC_ENABLE |
|
|
4012 | periodics_reschedule (EV_A); |
|
|
4013 | #endif |
|
|
4014 | } |
|
|
4015 | |
|
|
4016 | mn_now = ev_rt_now; |
|
|
4017 | } |
|
|
4018 | } |
|
|
4019 | |
|
|
4020 | int |
|
|
4021 | ev_run (EV_P_ int flags) |
|
|
4022 | { |
|
|
4023 | #if EV_FEATURE_API |
|
|
4024 | ++loop_depth; |
|
|
4025 | #endif |
|
|
4026 | |
|
|
4027 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
4028 | |
|
|
4029 | loop_done = EVBREAK_CANCEL; |
|
|
4030 | |
|
|
4031 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
4032 | |
|
|
4033 | do |
|
|
4034 | { |
|
|
4035 | #if EV_VERIFY >= 2 |
|
|
4036 | ev_verify (EV_A); |
|
|
4037 | #endif |
|
|
4038 | |
|
|
4039 | #ifndef _WIN32 |
|
|
4040 | if (ecb_expect_false (curpid)) /* penalise the forking check even more */ |
|
|
4041 | if (ecb_expect_false (getpid () != curpid)) |
|
|
4042 | { |
|
|
4043 | curpid = getpid (); |
|
|
4044 | postfork = 1; |
|
|
4045 | } |
|
|
4046 | #endif |
|
|
4047 | |
|
|
4048 | #if EV_FORK_ENABLE |
|
|
4049 | /* we might have forked, so queue fork handlers */ |
|
|
4050 | if (ecb_expect_false (postfork)) |
|
|
4051 | if (forkcnt) |
|
|
4052 | { |
|
|
4053 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
4054 | EV_INVOKE_PENDING; |
|
|
4055 | } |
|
|
4056 | #endif |
|
|
4057 | |
|
|
4058 | #if EV_PREPARE_ENABLE |
|
|
4059 | /* queue prepare watchers (and execute them) */ |
|
|
4060 | if (ecb_expect_false (preparecnt)) |
|
|
4061 | { |
|
|
4062 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
4063 | EV_INVOKE_PENDING; |
|
|
4064 | } |
|
|
4065 | #endif |
|
|
4066 | |
|
|
4067 | if (ecb_expect_false (loop_done)) |
|
|
4068 | break; |
|
|
4069 | |
|
|
4070 | /* we might have forked, so reify kernel state if necessary */ |
|
|
4071 | if (ecb_expect_false (postfork)) |
|
|
4072 | loop_fork (EV_A); |
|
|
4073 | |
|
|
4074 | /* update fd-related kernel structures */ |
|
|
4075 | fd_reify (EV_A); |
|
|
4076 | |
|
|
4077 | /* calculate blocking time */ |
529 | { |
4078 | { |
530 | struct timespec ts; |
4079 | ev_tstamp waittime = 0.; |
531 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
4080 | ev_tstamp sleeptime = 0.; |
532 | have_monotonic = 1; |
4081 | |
|
|
4082 | /* remember old timestamp for io_blocktime calculation */ |
|
|
4083 | ev_tstamp prev_mn_now = mn_now; |
|
|
4084 | |
|
|
4085 | /* update time to cancel out callback processing overhead */ |
|
|
4086 | time_update (EV_A_ EV_TS_CONST (EV_TSTAMP_HUGE)); |
|
|
4087 | |
|
|
4088 | /* from now on, we want a pipe-wake-up */ |
|
|
4089 | pipe_write_wanted = 1; |
|
|
4090 | |
|
|
4091 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
4092 | |
|
|
4093 | if (ecb_expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
|
|
4094 | { |
|
|
4095 | waittime = EV_TS_CONST (MAX_BLOCKTIME); |
|
|
4096 | |
|
|
4097 | #if EV_USE_TIMERFD |
|
|
4098 | /* sleep a lot longer when we can reliably detect timejumps */ |
|
|
4099 | if (ecb_expect_true (timerfd >= 0)) |
|
|
4100 | waittime = EV_TS_CONST (MAX_BLOCKTIME2); |
|
|
4101 | #endif |
|
|
4102 | #if !EV_PERIODIC_ENABLE |
|
|
4103 | /* without periodics but with monotonic clock there is no need */ |
|
|
4104 | /* for any time jump detection, so sleep longer */ |
|
|
4105 | if (ecb_expect_true (have_monotonic)) |
|
|
4106 | waittime = EV_TS_CONST (MAX_BLOCKTIME2); |
|
|
4107 | #endif |
|
|
4108 | |
|
|
4109 | if (timercnt) |
|
|
4110 | { |
|
|
4111 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
|
|
4112 | if (waittime > to) waittime = to; |
|
|
4113 | } |
|
|
4114 | |
|
|
4115 | #if EV_PERIODIC_ENABLE |
|
|
4116 | if (periodiccnt) |
|
|
4117 | { |
|
|
4118 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
|
|
4119 | if (waittime > to) waittime = to; |
|
|
4120 | } |
|
|
4121 | #endif |
|
|
4122 | |
|
|
4123 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
4124 | if (ecb_expect_false (waittime < timeout_blocktime)) |
|
|
4125 | waittime = timeout_blocktime; |
|
|
4126 | |
|
|
4127 | /* now there are two more special cases left, either we have |
|
|
4128 | * already-expired timers, so we should not sleep, or we have timers |
|
|
4129 | * that expire very soon, in which case we need to wait for a minimum |
|
|
4130 | * amount of time for some event loop backends. |
|
|
4131 | */ |
|
|
4132 | if (ecb_expect_false (waittime < backend_mintime)) |
|
|
4133 | waittime = waittime <= EV_TS_CONST (0.) |
|
|
4134 | ? EV_TS_CONST (0.) |
|
|
4135 | : backend_mintime; |
|
|
4136 | |
|
|
4137 | /* extra check because io_blocktime is commonly 0 */ |
|
|
4138 | if (ecb_expect_false (io_blocktime)) |
|
|
4139 | { |
|
|
4140 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
4141 | |
|
|
4142 | if (sleeptime > waittime - backend_mintime) |
|
|
4143 | sleeptime = waittime - backend_mintime; |
|
|
4144 | |
|
|
4145 | if (ecb_expect_true (sleeptime > EV_TS_CONST (0.))) |
|
|
4146 | { |
|
|
4147 | ev_sleep (sleeptime); |
|
|
4148 | waittime -= sleeptime; |
|
|
4149 | } |
|
|
4150 | } |
|
|
4151 | } |
|
|
4152 | |
|
|
4153 | #if EV_FEATURE_API |
|
|
4154 | ++loop_count; |
|
|
4155 | #endif |
|
|
4156 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
4157 | backend_poll (EV_A_ waittime); |
|
|
4158 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
4159 | |
|
|
4160 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
4161 | |
|
|
4162 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
4163 | if (pipe_write_skipped) |
|
|
4164 | { |
|
|
4165 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
4166 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
4167 | } |
|
|
4168 | |
|
|
4169 | /* update ev_rt_now, do magic */ |
|
|
4170 | time_update (EV_A_ waittime + sleeptime); |
533 | } |
4171 | } |
534 | #endif |
|
|
535 | |
4172 | |
536 | ev_now = ev_time (); |
4173 | /* queue pending timers and reschedule them */ |
537 | now = get_clock (); |
4174 | timers_reify (EV_A); /* relative timers called last */ |
538 | now_floor = now; |
4175 | #if EV_PERIODIC_ENABLE |
539 | diff = ev_now - now; |
4176 | periodics_reify (EV_A); /* absolute timers called first */ |
540 | |
|
|
541 | if (pipe (sigpipe)) |
|
|
542 | return 0; |
|
|
543 | |
|
|
544 | if (methods == EVMETHOD_AUTO) |
|
|
545 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
546 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
547 | else |
|
|
548 | methods = EVMETHOD_ANY; |
|
|
549 | |
|
|
550 | ev_method = 0; |
|
|
551 | #if EV_USE_KQUEUE |
|
|
552 | if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods); |
|
|
553 | #endif |
4177 | #endif |
554 | #if EV_USE_EPOLL |
|
|
555 | if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods); |
|
|
556 | #endif |
|
|
557 | #if EV_USE_POLL |
|
|
558 | if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods); |
|
|
559 | #endif |
|
|
560 | #if EV_USE_SELECT |
|
|
561 | if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods); |
|
|
562 | #endif |
|
|
563 | |
4178 | |
564 | if (ev_method) |
4179 | #if EV_IDLE_ENABLE |
|
|
4180 | /* queue idle watchers unless other events are pending */ |
|
|
4181 | idle_reify (EV_A); |
|
|
4182 | #endif |
|
|
4183 | |
|
|
4184 | #if EV_CHECK_ENABLE |
|
|
4185 | /* queue check watchers, to be executed first */ |
|
|
4186 | if (ecb_expect_false (checkcnt)) |
|
|
4187 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
4188 | #endif |
|
|
4189 | |
|
|
4190 | EV_INVOKE_PENDING; |
|
|
4191 | } |
|
|
4192 | while (ecb_expect_true ( |
|
|
4193 | activecnt |
|
|
4194 | && !loop_done |
|
|
4195 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
4196 | )); |
|
|
4197 | |
|
|
4198 | if (loop_done == EVBREAK_ONE) |
|
|
4199 | loop_done = EVBREAK_CANCEL; |
|
|
4200 | |
|
|
4201 | #if EV_FEATURE_API |
|
|
4202 | --loop_depth; |
|
|
4203 | #endif |
|
|
4204 | |
|
|
4205 | return activecnt; |
|
|
4206 | } |
|
|
4207 | |
|
|
4208 | void |
|
|
4209 | ev_break (EV_P_ int how) EV_NOEXCEPT |
|
|
4210 | { |
|
|
4211 | loop_done = how; |
|
|
4212 | } |
|
|
4213 | |
|
|
4214 | void |
|
|
4215 | ev_ref (EV_P) EV_NOEXCEPT |
|
|
4216 | { |
|
|
4217 | ++activecnt; |
|
|
4218 | } |
|
|
4219 | |
|
|
4220 | void |
|
|
4221 | ev_unref (EV_P) EV_NOEXCEPT |
|
|
4222 | { |
|
|
4223 | --activecnt; |
|
|
4224 | } |
|
|
4225 | |
|
|
4226 | void |
|
|
4227 | ev_now_update (EV_P) EV_NOEXCEPT |
|
|
4228 | { |
|
|
4229 | time_update (EV_A_ EV_TSTAMP_HUGE); |
|
|
4230 | } |
|
|
4231 | |
|
|
4232 | void |
|
|
4233 | ev_suspend (EV_P) EV_NOEXCEPT |
|
|
4234 | { |
|
|
4235 | ev_now_update (EV_A); |
|
|
4236 | } |
|
|
4237 | |
|
|
4238 | void |
|
|
4239 | ev_resume (EV_P) EV_NOEXCEPT |
|
|
4240 | { |
|
|
4241 | ev_tstamp mn_prev = mn_now; |
|
|
4242 | |
|
|
4243 | ev_now_update (EV_A); |
|
|
4244 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
4245 | #if EV_PERIODIC_ENABLE |
|
|
4246 | /* TODO: really do this? */ |
|
|
4247 | periodics_reschedule (EV_A); |
|
|
4248 | #endif |
|
|
4249 | } |
|
|
4250 | |
|
|
4251 | /*****************************************************************************/ |
|
|
4252 | /* singly-linked list management, used when the expected list length is short */ |
|
|
4253 | |
|
|
4254 | inline_size void |
|
|
4255 | wlist_add (WL *head, WL elem) |
|
|
4256 | { |
|
|
4257 | elem->next = *head; |
|
|
4258 | *head = elem; |
|
|
4259 | } |
|
|
4260 | |
|
|
4261 | inline_size void |
|
|
4262 | wlist_del (WL *head, WL elem) |
|
|
4263 | { |
|
|
4264 | while (*head) |
|
|
4265 | { |
|
|
4266 | if (ecb_expect_true (*head == elem)) |
565 | { |
4267 | { |
566 | ev_watcher_init (&sigev, sigcb); |
4268 | *head = elem->next; |
567 | siginit (); |
4269 | break; |
568 | |
|
|
569 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
570 | ev_signal_start (&childev); |
|
|
571 | } |
4270 | } |
|
|
4271 | |
|
|
4272 | head = &(*head)->next; |
|
|
4273 | } |
|
|
4274 | } |
|
|
4275 | |
|
|
4276 | /* internal, faster, version of ev_clear_pending */ |
|
|
4277 | inline_speed void |
|
|
4278 | clear_pending (EV_P_ W w) |
|
|
4279 | { |
|
|
4280 | if (w->pending) |
572 | } |
4281 | { |
|
|
4282 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
4283 | w->pending = 0; |
|
|
4284 | } |
|
|
4285 | } |
573 | |
4286 | |
574 | return ev_method; |
4287 | int |
|
|
4288 | ev_clear_pending (EV_P_ void *w) EV_NOEXCEPT |
|
|
4289 | { |
|
|
4290 | W w_ = (W)w; |
|
|
4291 | int pending = w_->pending; |
|
|
4292 | |
|
|
4293 | if (ecb_expect_true (pending)) |
|
|
4294 | { |
|
|
4295 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
4296 | p->w = (W)&pending_w; |
|
|
4297 | w_->pending = 0; |
|
|
4298 | return p->events; |
|
|
4299 | } |
|
|
4300 | else |
|
|
4301 | return 0; |
|
|
4302 | } |
|
|
4303 | |
|
|
4304 | inline_size void |
|
|
4305 | pri_adjust (EV_P_ W w) |
|
|
4306 | { |
|
|
4307 | int pri = ev_priority (w); |
|
|
4308 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
4309 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
4310 | ev_set_priority (w, pri); |
|
|
4311 | } |
|
|
4312 | |
|
|
4313 | inline_speed void |
|
|
4314 | ev_start (EV_P_ W w, int active) |
|
|
4315 | { |
|
|
4316 | pri_adjust (EV_A_ w); |
|
|
4317 | w->active = active; |
|
|
4318 | ev_ref (EV_A); |
|
|
4319 | } |
|
|
4320 | |
|
|
4321 | inline_size void |
|
|
4322 | ev_stop (EV_P_ W w) |
|
|
4323 | { |
|
|
4324 | ev_unref (EV_A); |
|
|
4325 | w->active = 0; |
575 | } |
4326 | } |
576 | |
4327 | |
577 | /*****************************************************************************/ |
4328 | /*****************************************************************************/ |
578 | |
4329 | |
|
|
4330 | ecb_noinline |
579 | void |
4331 | void |
580 | ev_fork_prepare (void) |
4332 | ev_io_start (EV_P_ ev_io *w) EV_NOEXCEPT |
581 | { |
4333 | { |
582 | /* nop */ |
4334 | int fd = w->fd; |
583 | } |
|
|
584 | |
4335 | |
|
|
4336 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4337 | return; |
|
|
4338 | |
|
|
4339 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
4340 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
4341 | |
|
|
4342 | #if EV_VERIFY >= 2 |
|
|
4343 | assert (("libev: ev_io_start called on watcher with invalid fd", fd_valid (fd))); |
|
|
4344 | #endif |
|
|
4345 | EV_FREQUENT_CHECK; |
|
|
4346 | |
|
|
4347 | ev_start (EV_A_ (W)w, 1); |
|
|
4348 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_needsize_zerofill); |
|
|
4349 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
4350 | |
|
|
4351 | /* common bug, apparently */ |
|
|
4352 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
4353 | |
|
|
4354 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
4355 | w->events &= ~EV__IOFDSET; |
|
|
4356 | |
|
|
4357 | EV_FREQUENT_CHECK; |
|
|
4358 | } |
|
|
4359 | |
|
|
4360 | ecb_noinline |
585 | void |
4361 | void |
586 | ev_fork_parent (void) |
4362 | ev_io_stop (EV_P_ ev_io *w) EV_NOEXCEPT |
587 | { |
4363 | { |
588 | /* nop */ |
4364 | clear_pending (EV_A_ (W)w); |
589 | } |
4365 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4366 | return; |
590 | |
4367 | |
|
|
4368 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
4369 | |
|
|
4370 | #if EV_VERIFY >= 2 |
|
|
4371 | assert (("libev: ev_io_stop called on watcher with invalid fd", fd_valid (w->fd))); |
|
|
4372 | #endif |
|
|
4373 | EV_FREQUENT_CHECK; |
|
|
4374 | |
|
|
4375 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
4376 | ev_stop (EV_A_ (W)w); |
|
|
4377 | |
|
|
4378 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
4379 | |
|
|
4380 | EV_FREQUENT_CHECK; |
|
|
4381 | } |
|
|
4382 | |
|
|
4383 | ecb_noinline |
591 | void |
4384 | void |
592 | ev_fork_child (void) |
4385 | ev_timer_start (EV_P_ ev_timer *w) EV_NOEXCEPT |
593 | { |
4386 | { |
594 | #if EV_USE_EPOLL |
4387 | if (ecb_expect_false (ev_is_active (w))) |
595 | if (ev_method == EVMETHOD_EPOLL) |
4388 | return; |
596 | epoll_postfork_child (); |
|
|
597 | #endif |
|
|
598 | |
4389 | |
599 | ev_io_stop (&sigev); |
4390 | ev_at (w) += mn_now; |
600 | close (sigpipe [0]); |
|
|
601 | close (sigpipe [1]); |
|
|
602 | pipe (sigpipe); |
|
|
603 | siginit (); |
|
|
604 | } |
|
|
605 | |
4391 | |
606 | /*****************************************************************************/ |
4392 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
607 | |
4393 | |
608 | static void |
4394 | EV_FREQUENT_CHECK; |
609 | call_pending (void) |
|
|
610 | { |
|
|
611 | int pri; |
|
|
612 | |
4395 | |
613 | for (pri = NUMPRI; pri--; ) |
4396 | ++timercnt; |
614 | while (pendingcnt [pri]) |
4397 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
4398 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, array_needsize_noinit); |
|
|
4399 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
4400 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
4401 | upheap (timers, ev_active (w)); |
|
|
4402 | |
|
|
4403 | EV_FREQUENT_CHECK; |
|
|
4404 | |
|
|
4405 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
4406 | } |
|
|
4407 | |
|
|
4408 | ecb_noinline |
|
|
4409 | void |
|
|
4410 | ev_timer_stop (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4411 | { |
|
|
4412 | clear_pending (EV_A_ (W)w); |
|
|
4413 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4414 | return; |
|
|
4415 | |
|
|
4416 | EV_FREQUENT_CHECK; |
|
|
4417 | |
|
|
4418 | { |
|
|
4419 | int active = ev_active (w); |
|
|
4420 | |
|
|
4421 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
4422 | |
|
|
4423 | --timercnt; |
|
|
4424 | |
|
|
4425 | if (ecb_expect_true (active < timercnt + HEAP0)) |
615 | { |
4426 | { |
616 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
4427 | timers [active] = timers [timercnt + HEAP0]; |
617 | |
4428 | adjustheap (timers, timercnt, active); |
618 | if (p->w) |
|
|
619 | { |
|
|
620 | p->w->pending = 0; |
|
|
621 | p->w->cb (p->w, p->events); |
|
|
622 | } |
|
|
623 | } |
4429 | } |
624 | } |
4430 | } |
625 | |
4431 | |
626 | static void |
4432 | ev_at (w) -= mn_now; |
627 | timers_reify (void) |
|
|
628 | { |
|
|
629 | while (timercnt && timers [0]->at <= now) |
|
|
630 | { |
|
|
631 | struct ev_timer *w = timers [0]; |
|
|
632 | |
4433 | |
633 | /* first reschedule or stop timer */ |
4434 | ev_stop (EV_A_ (W)w); |
|
|
4435 | |
|
|
4436 | EV_FREQUENT_CHECK; |
|
|
4437 | } |
|
|
4438 | |
|
|
4439 | ecb_noinline |
|
|
4440 | void |
|
|
4441 | ev_timer_again (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4442 | { |
|
|
4443 | EV_FREQUENT_CHECK; |
|
|
4444 | |
|
|
4445 | clear_pending (EV_A_ (W)w); |
|
|
4446 | |
|
|
4447 | if (ev_is_active (w)) |
|
|
4448 | { |
634 | if (w->repeat) |
4449 | if (w->repeat) |
635 | { |
4450 | { |
636 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
637 | w->at = now + w->repeat; |
4451 | ev_at (w) = mn_now + w->repeat; |
638 | downheap ((WT *)timers, timercnt, 0); |
4452 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
4453 | adjustheap (timers, timercnt, ev_active (w)); |
639 | } |
4454 | } |
640 | else |
4455 | else |
641 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
4456 | ev_timer_stop (EV_A_ w); |
642 | |
|
|
643 | event ((W)w, EV_TIMEOUT); |
|
|
644 | } |
|
|
645 | } |
|
|
646 | |
|
|
647 | static void |
|
|
648 | periodics_reify (void) |
|
|
649 | { |
|
|
650 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
651 | { |
4457 | } |
652 | struct ev_periodic *w = periodics [0]; |
4458 | else if (w->repeat) |
|
|
4459 | { |
|
|
4460 | ev_at (w) = w->repeat; |
|
|
4461 | ev_timer_start (EV_A_ w); |
|
|
4462 | } |
653 | |
4463 | |
654 | /* first reschedule or stop timer */ |
4464 | EV_FREQUENT_CHECK; |
|
|
4465 | } |
|
|
4466 | |
|
|
4467 | ev_tstamp |
|
|
4468 | ev_timer_remaining (EV_P_ ev_timer *w) EV_NOEXCEPT |
|
|
4469 | { |
|
|
4470 | return ev_at (w) - (ev_is_active (w) ? mn_now : EV_TS_CONST (0.)); |
|
|
4471 | } |
|
|
4472 | |
|
|
4473 | #if EV_PERIODIC_ENABLE |
|
|
4474 | ecb_noinline |
|
|
4475 | void |
|
|
4476 | ev_periodic_start (EV_P_ ev_periodic *w) EV_NOEXCEPT |
|
|
4477 | { |
|
|
4478 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4479 | return; |
|
|
4480 | |
|
|
4481 | #if EV_USE_TIMERFD |
|
|
4482 | if (timerfd == -2) |
|
|
4483 | evtimerfd_init (EV_A); |
|
|
4484 | #endif |
|
|
4485 | |
|
|
4486 | if (w->reschedule_cb) |
|
|
4487 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
655 | if (w->interval) |
4488 | else if (w->interval) |
|
|
4489 | { |
|
|
4490 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
4491 | periodic_recalc (EV_A_ w); |
|
|
4492 | } |
|
|
4493 | else |
|
|
4494 | ev_at (w) = w->offset; |
|
|
4495 | |
|
|
4496 | EV_FREQUENT_CHECK; |
|
|
4497 | |
|
|
4498 | ++periodiccnt; |
|
|
4499 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
|
|
4500 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, array_needsize_noinit); |
|
|
4501 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
4502 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
4503 | upheap (periodics, ev_active (w)); |
|
|
4504 | |
|
|
4505 | EV_FREQUENT_CHECK; |
|
|
4506 | |
|
|
4507 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
4508 | } |
|
|
4509 | |
|
|
4510 | ecb_noinline |
|
|
4511 | void |
|
|
4512 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_NOEXCEPT |
|
|
4513 | { |
|
|
4514 | clear_pending (EV_A_ (W)w); |
|
|
4515 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4516 | return; |
|
|
4517 | |
|
|
4518 | EV_FREQUENT_CHECK; |
|
|
4519 | |
|
|
4520 | { |
|
|
4521 | int active = ev_active (w); |
|
|
4522 | |
|
|
4523 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
4524 | |
|
|
4525 | --periodiccnt; |
|
|
4526 | |
|
|
4527 | if (ecb_expect_true (active < periodiccnt + HEAP0)) |
|
|
4528 | { |
|
|
4529 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
4530 | adjustheap (periodics, periodiccnt, active); |
|
|
4531 | } |
|
|
4532 | } |
|
|
4533 | |
|
|
4534 | ev_stop (EV_A_ (W)w); |
|
|
4535 | |
|
|
4536 | EV_FREQUENT_CHECK; |
|
|
4537 | } |
|
|
4538 | |
|
|
4539 | ecb_noinline |
|
|
4540 | void |
|
|
4541 | ev_periodic_again (EV_P_ ev_periodic *w) EV_NOEXCEPT |
|
|
4542 | { |
|
|
4543 | /* TODO: use adjustheap and recalculation */ |
|
|
4544 | ev_periodic_stop (EV_A_ w); |
|
|
4545 | ev_periodic_start (EV_A_ w); |
|
|
4546 | } |
|
|
4547 | #endif |
|
|
4548 | |
|
|
4549 | #ifndef SA_RESTART |
|
|
4550 | # define SA_RESTART 0 |
|
|
4551 | #endif |
|
|
4552 | |
|
|
4553 | #if EV_SIGNAL_ENABLE |
|
|
4554 | |
|
|
4555 | ecb_noinline |
|
|
4556 | void |
|
|
4557 | ev_signal_start (EV_P_ ev_signal *w) EV_NOEXCEPT |
|
|
4558 | { |
|
|
4559 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4560 | return; |
|
|
4561 | |
|
|
4562 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
4563 | |
|
|
4564 | #if EV_MULTIPLICITY |
|
|
4565 | assert (("libev: a signal must not be attached to two different loops", |
|
|
4566 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
4567 | |
|
|
4568 | signals [w->signum - 1].loop = EV_A; |
|
|
4569 | ECB_MEMORY_FENCE_RELEASE; |
|
|
4570 | #endif |
|
|
4571 | |
|
|
4572 | EV_FREQUENT_CHECK; |
|
|
4573 | |
|
|
4574 | #if EV_USE_SIGNALFD |
|
|
4575 | if (sigfd == -2) |
|
|
4576 | { |
|
|
4577 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
4578 | if (sigfd < 0 && errno == EINVAL) |
|
|
4579 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
4580 | |
|
|
4581 | if (sigfd >= 0) |
656 | { |
4582 | { |
657 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
4583 | fd_intern (sigfd); /* doing it twice will not hurt */ |
658 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
4584 | |
659 | downheap ((WT *)periodics, periodiccnt, 0); |
4585 | sigemptyset (&sigfd_set); |
|
|
4586 | |
|
|
4587 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
4588 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
4589 | ev_io_start (EV_A_ &sigfd_w); |
|
|
4590 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
4591 | } |
|
|
4592 | } |
|
|
4593 | |
|
|
4594 | if (sigfd >= 0) |
|
|
4595 | { |
|
|
4596 | /* TODO: check .head */ |
|
|
4597 | sigaddset (&sigfd_set, w->signum); |
|
|
4598 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
4599 | |
|
|
4600 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4601 | } |
|
|
4602 | #endif |
|
|
4603 | |
|
|
4604 | ev_start (EV_A_ (W)w, 1); |
|
|
4605 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
4606 | |
|
|
4607 | if (!((WL)w)->next) |
|
|
4608 | # if EV_USE_SIGNALFD |
|
|
4609 | if (sigfd < 0) /*TODO*/ |
|
|
4610 | # endif |
|
|
4611 | { |
|
|
4612 | # ifdef _WIN32 |
|
|
4613 | evpipe_init (EV_A); |
|
|
4614 | |
|
|
4615 | signal (w->signum, ev_sighandler); |
|
|
4616 | # else |
|
|
4617 | struct sigaction sa; |
|
|
4618 | |
|
|
4619 | evpipe_init (EV_A); |
|
|
4620 | |
|
|
4621 | sa.sa_handler = ev_sighandler; |
|
|
4622 | sigfillset (&sa.sa_mask); |
|
|
4623 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
4624 | sigaction (w->signum, &sa, 0); |
|
|
4625 | |
|
|
4626 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
4627 | { |
|
|
4628 | sigemptyset (&sa.sa_mask); |
|
|
4629 | sigaddset (&sa.sa_mask, w->signum); |
|
|
4630 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
4631 | } |
|
|
4632 | #endif |
|
|
4633 | } |
|
|
4634 | |
|
|
4635 | EV_FREQUENT_CHECK; |
|
|
4636 | } |
|
|
4637 | |
|
|
4638 | ecb_noinline |
|
|
4639 | void |
|
|
4640 | ev_signal_stop (EV_P_ ev_signal *w) EV_NOEXCEPT |
|
|
4641 | { |
|
|
4642 | clear_pending (EV_A_ (W)w); |
|
|
4643 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4644 | return; |
|
|
4645 | |
|
|
4646 | EV_FREQUENT_CHECK; |
|
|
4647 | |
|
|
4648 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
4649 | ev_stop (EV_A_ (W)w); |
|
|
4650 | |
|
|
4651 | if (!signals [w->signum - 1].head) |
|
|
4652 | { |
|
|
4653 | #if EV_MULTIPLICITY |
|
|
4654 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
4655 | #endif |
|
|
4656 | #if EV_USE_SIGNALFD |
|
|
4657 | if (sigfd >= 0) |
|
|
4658 | { |
|
|
4659 | sigset_t ss; |
|
|
4660 | |
|
|
4661 | sigemptyset (&ss); |
|
|
4662 | sigaddset (&ss, w->signum); |
|
|
4663 | sigdelset (&sigfd_set, w->signum); |
|
|
4664 | |
|
|
4665 | signalfd (sigfd, &sigfd_set, 0); |
|
|
4666 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
660 | } |
4667 | } |
661 | else |
4668 | else |
662 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
4669 | #endif |
663 | |
4670 | signal (w->signum, SIG_DFL); |
664 | event ((W)w, EV_PERIODIC); |
|
|
665 | } |
4671 | } |
666 | } |
|
|
667 | |
4672 | |
|
|
4673 | EV_FREQUENT_CHECK; |
|
|
4674 | } |
|
|
4675 | |
|
|
4676 | #endif |
|
|
4677 | |
|
|
4678 | #if EV_CHILD_ENABLE |
|
|
4679 | |
|
|
4680 | void |
|
|
4681 | ev_child_start (EV_P_ ev_child *w) EV_NOEXCEPT |
|
|
4682 | { |
|
|
4683 | #if EV_MULTIPLICITY |
|
|
4684 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
4685 | #endif |
|
|
4686 | if (ecb_expect_false (ev_is_active (w))) |
|
|
4687 | return; |
|
|
4688 | |
|
|
4689 | EV_FREQUENT_CHECK; |
|
|
4690 | |
|
|
4691 | ev_start (EV_A_ (W)w, 1); |
|
|
4692 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
4693 | |
|
|
4694 | EV_FREQUENT_CHECK; |
|
|
4695 | } |
|
|
4696 | |
|
|
4697 | void |
|
|
4698 | ev_child_stop (EV_P_ ev_child *w) EV_NOEXCEPT |
|
|
4699 | { |
|
|
4700 | clear_pending (EV_A_ (W)w); |
|
|
4701 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
4702 | return; |
|
|
4703 | |
|
|
4704 | EV_FREQUENT_CHECK; |
|
|
4705 | |
|
|
4706 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
4707 | ev_stop (EV_A_ (W)w); |
|
|
4708 | |
|
|
4709 | EV_FREQUENT_CHECK; |
|
|
4710 | } |
|
|
4711 | |
|
|
4712 | #endif |
|
|
4713 | |
|
|
4714 | #if EV_STAT_ENABLE |
|
|
4715 | |
|
|
4716 | # ifdef _WIN32 |
|
|
4717 | # undef lstat |
|
|
4718 | # define lstat(a,b) _stati64 (a,b) |
|
|
4719 | # endif |
|
|
4720 | |
|
|
4721 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
4722 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
4723 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
4724 | |
|
|
4725 | ecb_noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
4726 | |
|
|
4727 | #if EV_USE_INOTIFY |
|
|
4728 | |
|
|
4729 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
4730 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
4731 | |
|
|
4732 | ecb_noinline |
668 | static void |
4733 | static void |
669 | periodics_reschedule (ev_tstamp diff) |
4734 | infy_add (EV_P_ ev_stat *w) |
670 | { |
4735 | { |
671 | int i; |
4736 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
4737 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
4738 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
4739 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
672 | |
4740 | |
673 | /* adjust periodics after time jump */ |
4741 | if (w->wd >= 0) |
674 | for (i = 0; i < periodiccnt; ++i) |
4742 | { |
|
|
4743 | struct statfs sfs; |
|
|
4744 | |
|
|
4745 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
4746 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
4747 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
4748 | |
|
|
4749 | if (!fs_2625) |
|
|
4750 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4751 | else if (!statfs (w->path, &sfs) |
|
|
4752 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4753 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4754 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4755 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4756 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4757 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4758 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4759 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4760 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4761 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4762 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4763 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4764 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4765 | else |
|
|
4766 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
675 | { |
4767 | } |
676 | struct ev_periodic *w = periodics [i]; |
4768 | else |
|
|
4769 | { |
|
|
4770 | /* can't use inotify, continue to stat */ |
|
|
4771 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
677 | |
4772 | |
678 | if (w->interval) |
4773 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
4774 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
4775 | /* but an efficiency issue only */ |
|
|
4776 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
679 | { |
4777 | { |
680 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
4778 | char path [4096]; |
|
|
4779 | strcpy (path, w->path); |
681 | |
4780 | |
682 | if (fabs (diff) >= 1e-4) |
4781 | do |
683 | { |
4782 | { |
684 | ev_periodic_stop (w); |
4783 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
685 | ev_periodic_start (w); |
4784 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
686 | |
4785 | |
687 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
4786 | char *pend = strrchr (path, '/'); |
|
|
4787 | |
|
|
4788 | if (!pend || pend == path) |
|
|
4789 | break; |
|
|
4790 | |
|
|
4791 | *pend = 0; |
|
|
4792 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
4793 | } |
|
|
4794 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
4795 | } |
|
|
4796 | } |
|
|
4797 | |
|
|
4798 | if (w->wd >= 0) |
|
|
4799 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4800 | |
|
|
4801 | /* now re-arm timer, if required */ |
|
|
4802 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4803 | ev_timer_again (EV_A_ &w->timer); |
|
|
4804 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4805 | } |
|
|
4806 | |
|
|
4807 | ecb_noinline |
|
|
4808 | static void |
|
|
4809 | infy_del (EV_P_ ev_stat *w) |
|
|
4810 | { |
|
|
4811 | int slot; |
|
|
4812 | int wd = w->wd; |
|
|
4813 | |
|
|
4814 | if (wd < 0) |
|
|
4815 | return; |
|
|
4816 | |
|
|
4817 | w->wd = -2; |
|
|
4818 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
4819 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
4820 | |
|
|
4821 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
4822 | inotify_rm_watch (fs_fd, wd); |
|
|
4823 | } |
|
|
4824 | |
|
|
4825 | ecb_noinline |
|
|
4826 | static void |
|
|
4827 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
4828 | { |
|
|
4829 | if (slot < 0) |
|
|
4830 | /* overflow, need to check for all hash slots */ |
|
|
4831 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4832 | infy_wd (EV_A_ slot, wd, ev); |
|
|
4833 | else |
|
|
4834 | { |
|
|
4835 | WL w_; |
|
|
4836 | |
|
|
4837 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
4838 | { |
|
|
4839 | ev_stat *w = (ev_stat *)w_; |
|
|
4840 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
4841 | |
|
|
4842 | if (w->wd == wd || wd == -1) |
|
|
4843 | { |
|
|
4844 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
4845 | { |
|
|
4846 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4847 | w->wd = -1; |
|
|
4848 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4849 | } |
|
|
4850 | |
|
|
4851 | stat_timer_cb (EV_A_ &w->timer, 0); |
688 | } |
4852 | } |
689 | } |
4853 | } |
690 | } |
4854 | } |
691 | } |
4855 | } |
692 | |
4856 | |
693 | static int |
4857 | static void |
694 | time_update_monotonic (void) |
4858 | infy_cb (EV_P_ ev_io *w, int revents) |
695 | { |
4859 | { |
696 | now = get_clock (); |
4860 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
4861 | int ofs; |
|
|
4862 | int len = read (fs_fd, buf, sizeof (buf)); |
697 | |
4863 | |
698 | if (expect_true (now - now_floor < MIN_TIMEJUMP * .5)) |
4864 | for (ofs = 0; ofs < len; ) |
|
|
4865 | { |
|
|
4866 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
4867 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4868 | ofs += sizeof (struct inotify_event) + ev->len; |
699 | { |
4869 | } |
700 | ev_now = now + diff; |
4870 | } |
|
|
4871 | |
|
|
4872 | inline_size ecb_cold |
|
|
4873 | void |
|
|
4874 | ev_check_2625 (EV_P) |
|
|
4875 | { |
|
|
4876 | /* kernels < 2.6.25 are borked |
|
|
4877 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4878 | */ |
|
|
4879 | if (ev_linux_version () < 0x020619) |
701 | return 0; |
4880 | return; |
|
|
4881 | |
|
|
4882 | fs_2625 = 1; |
|
|
4883 | } |
|
|
4884 | |
|
|
4885 | inline_size int |
|
|
4886 | infy_newfd (void) |
|
|
4887 | { |
|
|
4888 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4889 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4890 | if (fd >= 0) |
|
|
4891 | return fd; |
|
|
4892 | #endif |
|
|
4893 | return inotify_init (); |
|
|
4894 | } |
|
|
4895 | |
|
|
4896 | inline_size void |
|
|
4897 | infy_init (EV_P) |
|
|
4898 | { |
|
|
4899 | if (fs_fd != -2) |
|
|
4900 | return; |
|
|
4901 | |
|
|
4902 | fs_fd = -1; |
|
|
4903 | |
|
|
4904 | ev_check_2625 (EV_A); |
|
|
4905 | |
|
|
4906 | fs_fd = infy_newfd (); |
|
|
4907 | |
|
|
4908 | if (fs_fd >= 0) |
702 | } |
4909 | { |
|
|
4910 | fd_intern (fs_fd); |
|
|
4911 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
4912 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
4913 | ev_io_start (EV_A_ &fs_w); |
|
|
4914 | ev_unref (EV_A); |
|
|
4915 | } |
|
|
4916 | } |
|
|
4917 | |
|
|
4918 | inline_size void |
|
|
4919 | infy_fork (EV_P) |
|
|
4920 | { |
|
|
4921 | int slot; |
|
|
4922 | |
|
|
4923 | if (fs_fd < 0) |
|
|
4924 | return; |
|
|
4925 | |
|
|
4926 | ev_ref (EV_A); |
|
|
4927 | ev_io_stop (EV_A_ &fs_w); |
|
|
4928 | close (fs_fd); |
|
|
4929 | fs_fd = infy_newfd (); |
|
|
4930 | |
|
|
4931 | if (fs_fd >= 0) |
|
|
4932 | { |
|
|
4933 | fd_intern (fs_fd); |
|
|
4934 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4935 | ev_io_start (EV_A_ &fs_w); |
|
|
4936 | ev_unref (EV_A); |
|
|
4937 | } |
|
|
4938 | |
|
|
4939 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4940 | { |
|
|
4941 | WL w_ = fs_hash [slot].head; |
|
|
4942 | fs_hash [slot].head = 0; |
|
|
4943 | |
|
|
4944 | while (w_) |
|
|
4945 | { |
|
|
4946 | ev_stat *w = (ev_stat *)w_; |
|
|
4947 | w_ = w_->next; /* lets us add this watcher */ |
|
|
4948 | |
|
|
4949 | w->wd = -1; |
|
|
4950 | |
|
|
4951 | if (fs_fd >= 0) |
|
|
4952 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4953 | else |
|
|
4954 | { |
|
|
4955 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4956 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4957 | ev_timer_again (EV_A_ &w->timer); |
|
|
4958 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4959 | } |
|
|
4960 | } |
|
|
4961 | } |
|
|
4962 | } |
|
|
4963 | |
|
|
4964 | #endif |
|
|
4965 | |
|
|
4966 | #ifdef _WIN32 |
|
|
4967 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
4968 | #else |
|
|
4969 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
4970 | #endif |
|
|
4971 | |
|
|
4972 | void |
|
|
4973 | ev_stat_stat (EV_P_ ev_stat *w) EV_NOEXCEPT |
|
|
4974 | { |
|
|
4975 | if (lstat (w->path, &w->attr) < 0) |
|
|
4976 | w->attr.st_nlink = 0; |
|
|
4977 | else if (!w->attr.st_nlink) |
|
|
4978 | w->attr.st_nlink = 1; |
|
|
4979 | } |
|
|
4980 | |
|
|
4981 | ecb_noinline |
|
|
4982 | static void |
|
|
4983 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
4984 | { |
|
|
4985 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
4986 | |
|
|
4987 | ev_statdata prev = w->attr; |
|
|
4988 | ev_stat_stat (EV_A_ w); |
|
|
4989 | |
|
|
4990 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
4991 | if ( |
|
|
4992 | prev.st_dev != w->attr.st_dev |
|
|
4993 | || prev.st_ino != w->attr.st_ino |
|
|
4994 | || prev.st_mode != w->attr.st_mode |
|
|
4995 | || prev.st_nlink != w->attr.st_nlink |
|
|
4996 | || prev.st_uid != w->attr.st_uid |
|
|
4997 | || prev.st_gid != w->attr.st_gid |
|
|
4998 | || prev.st_rdev != w->attr.st_rdev |
|
|
4999 | || prev.st_size != w->attr.st_size |
|
|
5000 | || prev.st_atime != w->attr.st_atime |
|
|
5001 | || prev.st_mtime != w->attr.st_mtime |
|
|
5002 | || prev.st_ctime != w->attr.st_ctime |
|
|
5003 | ) { |
|
|
5004 | /* we only update w->prev on actual differences */ |
|
|
5005 | /* in case we test more often than invoke the callback, */ |
|
|
5006 | /* to ensure that prev is always different to attr */ |
|
|
5007 | w->prev = prev; |
|
|
5008 | |
|
|
5009 | #if EV_USE_INOTIFY |
|
|
5010 | if (fs_fd >= 0) |
|
|
5011 | { |
|
|
5012 | infy_del (EV_A_ w); |
|
|
5013 | infy_add (EV_A_ w); |
|
|
5014 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
5015 | } |
|
|
5016 | #endif |
|
|
5017 | |
|
|
5018 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
5019 | } |
|
|
5020 | } |
|
|
5021 | |
|
|
5022 | void |
|
|
5023 | ev_stat_start (EV_P_ ev_stat *w) EV_NOEXCEPT |
|
|
5024 | { |
|
|
5025 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5026 | return; |
|
|
5027 | |
|
|
5028 | ev_stat_stat (EV_A_ w); |
|
|
5029 | |
|
|
5030 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
5031 | w->interval = MIN_STAT_INTERVAL; |
|
|
5032 | |
|
|
5033 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
5034 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
5035 | |
|
|
5036 | #if EV_USE_INOTIFY |
|
|
5037 | infy_init (EV_A); |
|
|
5038 | |
|
|
5039 | if (fs_fd >= 0) |
|
|
5040 | infy_add (EV_A_ w); |
703 | else |
5041 | else |
|
|
5042 | #endif |
|
|
5043 | { |
|
|
5044 | ev_timer_again (EV_A_ &w->timer); |
|
|
5045 | ev_unref (EV_A); |
704 | { |
5046 | } |
705 | now_floor = now; |
5047 | |
706 | ev_now = ev_time (); |
5048 | ev_start (EV_A_ (W)w, 1); |
|
|
5049 | |
|
|
5050 | EV_FREQUENT_CHECK; |
|
|
5051 | } |
|
|
5052 | |
|
|
5053 | void |
|
|
5054 | ev_stat_stop (EV_P_ ev_stat *w) EV_NOEXCEPT |
|
|
5055 | { |
|
|
5056 | clear_pending (EV_A_ (W)w); |
|
|
5057 | if (ecb_expect_false (!ev_is_active (w))) |
707 | return 1; |
5058 | return; |
|
|
5059 | |
|
|
5060 | EV_FREQUENT_CHECK; |
|
|
5061 | |
|
|
5062 | #if EV_USE_INOTIFY |
|
|
5063 | infy_del (EV_A_ w); |
|
|
5064 | #endif |
|
|
5065 | |
|
|
5066 | if (ev_is_active (&w->timer)) |
708 | } |
5067 | { |
|
|
5068 | ev_ref (EV_A); |
|
|
5069 | ev_timer_stop (EV_A_ &w->timer); |
|
|
5070 | } |
|
|
5071 | |
|
|
5072 | ev_stop (EV_A_ (W)w); |
|
|
5073 | |
|
|
5074 | EV_FREQUENT_CHECK; |
|
|
5075 | } |
|
|
5076 | #endif |
|
|
5077 | |
|
|
5078 | #if EV_IDLE_ENABLE |
|
|
5079 | void |
|
|
5080 | ev_idle_start (EV_P_ ev_idle *w) EV_NOEXCEPT |
|
|
5081 | { |
|
|
5082 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5083 | return; |
|
|
5084 | |
|
|
5085 | pri_adjust (EV_A_ (W)w); |
|
|
5086 | |
|
|
5087 | EV_FREQUENT_CHECK; |
|
|
5088 | |
|
|
5089 | { |
|
|
5090 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
5091 | |
|
|
5092 | ++idleall; |
|
|
5093 | ev_start (EV_A_ (W)w, active); |
|
|
5094 | |
|
|
5095 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, array_needsize_noinit); |
|
|
5096 | idles [ABSPRI (w)][active - 1] = w; |
|
|
5097 | } |
|
|
5098 | |
|
|
5099 | EV_FREQUENT_CHECK; |
|
|
5100 | } |
|
|
5101 | |
|
|
5102 | void |
|
|
5103 | ev_idle_stop (EV_P_ ev_idle *w) EV_NOEXCEPT |
|
|
5104 | { |
|
|
5105 | clear_pending (EV_A_ (W)w); |
|
|
5106 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5107 | return; |
|
|
5108 | |
|
|
5109 | EV_FREQUENT_CHECK; |
|
|
5110 | |
|
|
5111 | { |
|
|
5112 | int active = ev_active (w); |
|
|
5113 | |
|
|
5114 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
5115 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
5116 | |
|
|
5117 | ev_stop (EV_A_ (W)w); |
|
|
5118 | --idleall; |
|
|
5119 | } |
|
|
5120 | |
|
|
5121 | EV_FREQUENT_CHECK; |
|
|
5122 | } |
|
|
5123 | #endif |
|
|
5124 | |
|
|
5125 | #if EV_PREPARE_ENABLE |
|
|
5126 | void |
|
|
5127 | ev_prepare_start (EV_P_ ev_prepare *w) EV_NOEXCEPT |
|
|
5128 | { |
|
|
5129 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5130 | return; |
|
|
5131 | |
|
|
5132 | EV_FREQUENT_CHECK; |
|
|
5133 | |
|
|
5134 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
5135 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, array_needsize_noinit); |
|
|
5136 | prepares [preparecnt - 1] = w; |
|
|
5137 | |
|
|
5138 | EV_FREQUENT_CHECK; |
|
|
5139 | } |
|
|
5140 | |
|
|
5141 | void |
|
|
5142 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_NOEXCEPT |
|
|
5143 | { |
|
|
5144 | clear_pending (EV_A_ (W)w); |
|
|
5145 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5146 | return; |
|
|
5147 | |
|
|
5148 | EV_FREQUENT_CHECK; |
|
|
5149 | |
|
|
5150 | { |
|
|
5151 | int active = ev_active (w); |
|
|
5152 | |
|
|
5153 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
5154 | ev_active (prepares [active - 1]) = active; |
|
|
5155 | } |
|
|
5156 | |
|
|
5157 | ev_stop (EV_A_ (W)w); |
|
|
5158 | |
|
|
5159 | EV_FREQUENT_CHECK; |
|
|
5160 | } |
|
|
5161 | #endif |
|
|
5162 | |
|
|
5163 | #if EV_CHECK_ENABLE |
|
|
5164 | void |
|
|
5165 | ev_check_start (EV_P_ ev_check *w) EV_NOEXCEPT |
|
|
5166 | { |
|
|
5167 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5168 | return; |
|
|
5169 | |
|
|
5170 | EV_FREQUENT_CHECK; |
|
|
5171 | |
|
|
5172 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
5173 | array_needsize (ev_check *, checks, checkmax, checkcnt, array_needsize_noinit); |
|
|
5174 | checks [checkcnt - 1] = w; |
|
|
5175 | |
|
|
5176 | EV_FREQUENT_CHECK; |
|
|
5177 | } |
|
|
5178 | |
|
|
5179 | void |
|
|
5180 | ev_check_stop (EV_P_ ev_check *w) EV_NOEXCEPT |
|
|
5181 | { |
|
|
5182 | clear_pending (EV_A_ (W)w); |
|
|
5183 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5184 | return; |
|
|
5185 | |
|
|
5186 | EV_FREQUENT_CHECK; |
|
|
5187 | |
|
|
5188 | { |
|
|
5189 | int active = ev_active (w); |
|
|
5190 | |
|
|
5191 | checks [active - 1] = checks [--checkcnt]; |
|
|
5192 | ev_active (checks [active - 1]) = active; |
|
|
5193 | } |
|
|
5194 | |
|
|
5195 | ev_stop (EV_A_ (W)w); |
|
|
5196 | |
|
|
5197 | EV_FREQUENT_CHECK; |
|
|
5198 | } |
|
|
5199 | #endif |
|
|
5200 | |
|
|
5201 | #if EV_EMBED_ENABLE |
|
|
5202 | ecb_noinline |
|
|
5203 | void |
|
|
5204 | ev_embed_sweep (EV_P_ ev_embed *w) EV_NOEXCEPT |
|
|
5205 | { |
|
|
5206 | ev_run (w->other, EVRUN_NOWAIT); |
709 | } |
5207 | } |
710 | |
5208 | |
711 | static void |
5209 | static void |
712 | time_update (void) |
5210 | embed_io_cb (EV_P_ ev_io *io, int revents) |
713 | { |
5211 | { |
714 | int i; |
5212 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
715 | |
5213 | |
716 | #if EV_USE_MONOTONIC |
5214 | if (ev_cb (w)) |
717 | if (expect_true (have_monotonic)) |
5215 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
718 | { |
|
|
719 | if (time_update_monotonic ()) |
|
|
720 | { |
|
|
721 | ev_tstamp odiff = diff; |
|
|
722 | |
|
|
723 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
724 | { |
|
|
725 | diff = ev_now - now; |
|
|
726 | |
|
|
727 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
728 | return; /* all is well */ |
|
|
729 | |
|
|
730 | ev_now = ev_time (); |
|
|
731 | now = get_clock (); |
|
|
732 | now_floor = now; |
|
|
733 | } |
|
|
734 | |
|
|
735 | periodics_reschedule (diff - odiff); |
|
|
736 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
737 | } |
|
|
738 | } |
|
|
739 | else |
5216 | else |
740 | #endif |
5217 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
5218 | } |
|
|
5219 | |
|
|
5220 | static void |
|
|
5221 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
5222 | { |
|
|
5223 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
5224 | |
741 | { |
5225 | { |
742 | ev_now = ev_time (); |
5226 | EV_P = w->other; |
743 | |
5227 | |
744 | if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
5228 | while (fdchangecnt) |
745 | { |
5229 | { |
746 | periodics_reschedule (ev_now - now); |
5230 | fd_reify (EV_A); |
747 | |
5231 | ev_run (EV_A_ EVRUN_NOWAIT); |
748 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
749 | for (i = 0; i < timercnt; ++i) |
|
|
750 | timers [i]->at += diff; |
|
|
751 | } |
5232 | } |
752 | |
|
|
753 | now = ev_now; |
|
|
754 | } |
5233 | } |
755 | } |
5234 | } |
756 | |
5235 | |
757 | int ev_loop_done; |
5236 | #if EV_FORK_ENABLE |
758 | |
5237 | static void |
759 | void ev_loop (int flags) |
5238 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
760 | { |
5239 | { |
761 | double block; |
5240 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
762 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
763 | |
5241 | |
764 | do |
5242 | ev_embed_stop (EV_A_ w); |
|
|
5243 | |
765 | { |
5244 | { |
766 | /* queue check watchers (and execute them) */ |
5245 | EV_P = w->other; |
767 | if (expect_false (preparecnt)) |
|
|
768 | { |
|
|
769 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
770 | call_pending (); |
|
|
771 | } |
|
|
772 | |
5246 | |
773 | /* update fd-related kernel structures */ |
5247 | ev_loop_fork (EV_A); |
774 | fd_reify (); |
5248 | ev_run (EV_A_ EVRUN_NOWAIT); |
775 | |
|
|
776 | /* calculate blocking time */ |
|
|
777 | |
|
|
778 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
779 | always have timers, we just calculate it always */ |
|
|
780 | #if EV_USE_MONOTONIC |
|
|
781 | if (expect_true (have_monotonic)) |
|
|
782 | time_update_monotonic (); |
|
|
783 | else |
|
|
784 | #endif |
|
|
785 | { |
|
|
786 | ev_now = ev_time (); |
|
|
787 | now = ev_now; |
|
|
788 | } |
|
|
789 | |
|
|
790 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
791 | block = 0.; |
|
|
792 | else |
|
|
793 | { |
|
|
794 | block = MAX_BLOCKTIME; |
|
|
795 | |
|
|
796 | if (timercnt) |
|
|
797 | { |
|
|
798 | ev_tstamp to = timers [0]->at - now + method_fudge; |
|
|
799 | if (block > to) block = to; |
|
|
800 | } |
|
|
801 | |
|
|
802 | if (periodiccnt) |
|
|
803 | { |
|
|
804 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
|
|
805 | if (block > to) block = to; |
|
|
806 | } |
|
|
807 | |
|
|
808 | if (block < 0.) block = 0.; |
|
|
809 | } |
|
|
810 | |
|
|
811 | method_poll (block); |
|
|
812 | |
|
|
813 | /* update ev_now, do magic */ |
|
|
814 | time_update (); |
|
|
815 | |
|
|
816 | /* queue pending timers and reschedule them */ |
|
|
817 | timers_reify (); /* relative timers called last */ |
|
|
818 | periodics_reify (); /* absolute timers called first */ |
|
|
819 | |
|
|
820 | /* queue idle watchers unless io or timers are pending */ |
|
|
821 | if (!pendingcnt) |
|
|
822 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
|
|
823 | |
|
|
824 | /* queue check watchers, to be executed first */ |
|
|
825 | if (checkcnt) |
|
|
826 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
827 | |
|
|
828 | call_pending (); |
|
|
829 | } |
5249 | } |
830 | while (!ev_loop_done); |
|
|
831 | |
5250 | |
832 | if (ev_loop_done != 2) |
5251 | ev_embed_start (EV_A_ w); |
833 | ev_loop_done = 0; |
|
|
834 | } |
5252 | } |
|
|
5253 | #endif |
|
|
5254 | |
|
|
5255 | #if 0 |
|
|
5256 | static void |
|
|
5257 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
5258 | { |
|
|
5259 | ev_idle_stop (EV_A_ idle); |
|
|
5260 | } |
|
|
5261 | #endif |
|
|
5262 | |
|
|
5263 | void |
|
|
5264 | ev_embed_start (EV_P_ ev_embed *w) EV_NOEXCEPT |
|
|
5265 | { |
|
|
5266 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5267 | return; |
|
|
5268 | |
|
|
5269 | { |
|
|
5270 | EV_P = w->other; |
|
|
5271 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
5272 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
5273 | } |
|
|
5274 | |
|
|
5275 | EV_FREQUENT_CHECK; |
|
|
5276 | |
|
|
5277 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
5278 | ev_io_start (EV_A_ &w->io); |
|
|
5279 | |
|
|
5280 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
5281 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
5282 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
5283 | |
|
|
5284 | #if EV_FORK_ENABLE |
|
|
5285 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
5286 | ev_fork_start (EV_A_ &w->fork); |
|
|
5287 | #endif |
|
|
5288 | |
|
|
5289 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
5290 | |
|
|
5291 | ev_start (EV_A_ (W)w, 1); |
|
|
5292 | |
|
|
5293 | EV_FREQUENT_CHECK; |
|
|
5294 | } |
|
|
5295 | |
|
|
5296 | void |
|
|
5297 | ev_embed_stop (EV_P_ ev_embed *w) EV_NOEXCEPT |
|
|
5298 | { |
|
|
5299 | clear_pending (EV_A_ (W)w); |
|
|
5300 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5301 | return; |
|
|
5302 | |
|
|
5303 | EV_FREQUENT_CHECK; |
|
|
5304 | |
|
|
5305 | ev_io_stop (EV_A_ &w->io); |
|
|
5306 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
5307 | #if EV_FORK_ENABLE |
|
|
5308 | ev_fork_stop (EV_A_ &w->fork); |
|
|
5309 | #endif |
|
|
5310 | |
|
|
5311 | ev_stop (EV_A_ (W)w); |
|
|
5312 | |
|
|
5313 | EV_FREQUENT_CHECK; |
|
|
5314 | } |
|
|
5315 | #endif |
|
|
5316 | |
|
|
5317 | #if EV_FORK_ENABLE |
|
|
5318 | void |
|
|
5319 | ev_fork_start (EV_P_ ev_fork *w) EV_NOEXCEPT |
|
|
5320 | { |
|
|
5321 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5322 | return; |
|
|
5323 | |
|
|
5324 | EV_FREQUENT_CHECK; |
|
|
5325 | |
|
|
5326 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
5327 | array_needsize (ev_fork *, forks, forkmax, forkcnt, array_needsize_noinit); |
|
|
5328 | forks [forkcnt - 1] = w; |
|
|
5329 | |
|
|
5330 | EV_FREQUENT_CHECK; |
|
|
5331 | } |
|
|
5332 | |
|
|
5333 | void |
|
|
5334 | ev_fork_stop (EV_P_ ev_fork *w) EV_NOEXCEPT |
|
|
5335 | { |
|
|
5336 | clear_pending (EV_A_ (W)w); |
|
|
5337 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5338 | return; |
|
|
5339 | |
|
|
5340 | EV_FREQUENT_CHECK; |
|
|
5341 | |
|
|
5342 | { |
|
|
5343 | int active = ev_active (w); |
|
|
5344 | |
|
|
5345 | forks [active - 1] = forks [--forkcnt]; |
|
|
5346 | ev_active (forks [active - 1]) = active; |
|
|
5347 | } |
|
|
5348 | |
|
|
5349 | ev_stop (EV_A_ (W)w); |
|
|
5350 | |
|
|
5351 | EV_FREQUENT_CHECK; |
|
|
5352 | } |
|
|
5353 | #endif |
|
|
5354 | |
|
|
5355 | #if EV_CLEANUP_ENABLE |
|
|
5356 | void |
|
|
5357 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
|
|
5358 | { |
|
|
5359 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5360 | return; |
|
|
5361 | |
|
|
5362 | EV_FREQUENT_CHECK; |
|
|
5363 | |
|
|
5364 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
5365 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, array_needsize_noinit); |
|
|
5366 | cleanups [cleanupcnt - 1] = w; |
|
|
5367 | |
|
|
5368 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
5369 | ev_unref (EV_A); |
|
|
5370 | EV_FREQUENT_CHECK; |
|
|
5371 | } |
|
|
5372 | |
|
|
5373 | void |
|
|
5374 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_NOEXCEPT |
|
|
5375 | { |
|
|
5376 | clear_pending (EV_A_ (W)w); |
|
|
5377 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5378 | return; |
|
|
5379 | |
|
|
5380 | EV_FREQUENT_CHECK; |
|
|
5381 | ev_ref (EV_A); |
|
|
5382 | |
|
|
5383 | { |
|
|
5384 | int active = ev_active (w); |
|
|
5385 | |
|
|
5386 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
5387 | ev_active (cleanups [active - 1]) = active; |
|
|
5388 | } |
|
|
5389 | |
|
|
5390 | ev_stop (EV_A_ (W)w); |
|
|
5391 | |
|
|
5392 | EV_FREQUENT_CHECK; |
|
|
5393 | } |
|
|
5394 | #endif |
|
|
5395 | |
|
|
5396 | #if EV_ASYNC_ENABLE |
|
|
5397 | void |
|
|
5398 | ev_async_start (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
5399 | { |
|
|
5400 | if (ecb_expect_false (ev_is_active (w))) |
|
|
5401 | return; |
|
|
5402 | |
|
|
5403 | w->sent = 0; |
|
|
5404 | |
|
|
5405 | evpipe_init (EV_A); |
|
|
5406 | |
|
|
5407 | EV_FREQUENT_CHECK; |
|
|
5408 | |
|
|
5409 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
5410 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, array_needsize_noinit); |
|
|
5411 | asyncs [asynccnt - 1] = w; |
|
|
5412 | |
|
|
5413 | EV_FREQUENT_CHECK; |
|
|
5414 | } |
|
|
5415 | |
|
|
5416 | void |
|
|
5417 | ev_async_stop (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
5418 | { |
|
|
5419 | clear_pending (EV_A_ (W)w); |
|
|
5420 | if (ecb_expect_false (!ev_is_active (w))) |
|
|
5421 | return; |
|
|
5422 | |
|
|
5423 | EV_FREQUENT_CHECK; |
|
|
5424 | |
|
|
5425 | { |
|
|
5426 | int active = ev_active (w); |
|
|
5427 | |
|
|
5428 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
5429 | ev_active (asyncs [active - 1]) = active; |
|
|
5430 | } |
|
|
5431 | |
|
|
5432 | ev_stop (EV_A_ (W)w); |
|
|
5433 | |
|
|
5434 | EV_FREQUENT_CHECK; |
|
|
5435 | } |
|
|
5436 | |
|
|
5437 | void |
|
|
5438 | ev_async_send (EV_P_ ev_async *w) EV_NOEXCEPT |
|
|
5439 | { |
|
|
5440 | w->sent = 1; |
|
|
5441 | evpipe_write (EV_A_ &async_pending); |
|
|
5442 | } |
|
|
5443 | #endif |
835 | |
5444 | |
836 | /*****************************************************************************/ |
5445 | /*****************************************************************************/ |
837 | |
5446 | |
838 | static void |
|
|
839 | wlist_add (WL *head, WL elem) |
|
|
840 | { |
|
|
841 | elem->next = *head; |
|
|
842 | *head = elem; |
|
|
843 | } |
|
|
844 | |
|
|
845 | static void |
|
|
846 | wlist_del (WL *head, WL elem) |
|
|
847 | { |
|
|
848 | while (*head) |
|
|
849 | { |
|
|
850 | if (*head == elem) |
|
|
851 | { |
|
|
852 | *head = elem->next; |
|
|
853 | return; |
|
|
854 | } |
|
|
855 | |
|
|
856 | head = &(*head)->next; |
|
|
857 | } |
|
|
858 | } |
|
|
859 | |
|
|
860 | static void |
|
|
861 | ev_clear_pending (W w) |
|
|
862 | { |
|
|
863 | if (w->pending) |
|
|
864 | { |
|
|
865 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
866 | w->pending = 0; |
|
|
867 | } |
|
|
868 | } |
|
|
869 | |
|
|
870 | static void |
|
|
871 | ev_start (W w, int active) |
|
|
872 | { |
|
|
873 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
874 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
875 | |
|
|
876 | w->active = active; |
|
|
877 | } |
|
|
878 | |
|
|
879 | static void |
|
|
880 | ev_stop (W w) |
|
|
881 | { |
|
|
882 | w->active = 0; |
|
|
883 | } |
|
|
884 | |
|
|
885 | /*****************************************************************************/ |
|
|
886 | |
|
|
887 | void |
|
|
888 | ev_io_start (struct ev_io *w) |
|
|
889 | { |
|
|
890 | int fd = w->fd; |
|
|
891 | |
|
|
892 | if (ev_is_active (w)) |
|
|
893 | return; |
|
|
894 | |
|
|
895 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
896 | |
|
|
897 | ev_start ((W)w, 1); |
|
|
898 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
899 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
900 | |
|
|
901 | fd_change (fd); |
|
|
902 | } |
|
|
903 | |
|
|
904 | void |
|
|
905 | ev_io_stop (struct ev_io *w) |
|
|
906 | { |
|
|
907 | ev_clear_pending ((W)w); |
|
|
908 | if (!ev_is_active (w)) |
|
|
909 | return; |
|
|
910 | |
|
|
911 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
912 | ev_stop ((W)w); |
|
|
913 | |
|
|
914 | fd_change (w->fd); |
|
|
915 | } |
|
|
916 | |
|
|
917 | void |
|
|
918 | ev_timer_start (struct ev_timer *w) |
|
|
919 | { |
|
|
920 | if (ev_is_active (w)) |
|
|
921 | return; |
|
|
922 | |
|
|
923 | w->at += now; |
|
|
924 | |
|
|
925 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
926 | |
|
|
927 | ev_start ((W)w, ++timercnt); |
|
|
928 | array_needsize (timers, timermax, timercnt, ); |
|
|
929 | timers [timercnt - 1] = w; |
|
|
930 | upheap ((WT *)timers, timercnt - 1); |
|
|
931 | } |
|
|
932 | |
|
|
933 | void |
|
|
934 | ev_timer_stop (struct ev_timer *w) |
|
|
935 | { |
|
|
936 | ev_clear_pending ((W)w); |
|
|
937 | if (!ev_is_active (w)) |
|
|
938 | return; |
|
|
939 | |
|
|
940 | if (w->active < timercnt--) |
|
|
941 | { |
|
|
942 | timers [w->active - 1] = timers [timercnt]; |
|
|
943 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
944 | } |
|
|
945 | |
|
|
946 | w->at = w->repeat; |
|
|
947 | |
|
|
948 | ev_stop ((W)w); |
|
|
949 | } |
|
|
950 | |
|
|
951 | void |
|
|
952 | ev_timer_again (struct ev_timer *w) |
|
|
953 | { |
|
|
954 | if (ev_is_active (w)) |
|
|
955 | { |
|
|
956 | if (w->repeat) |
|
|
957 | { |
|
|
958 | w->at = now + w->repeat; |
|
|
959 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
960 | } |
|
|
961 | else |
|
|
962 | ev_timer_stop (w); |
|
|
963 | } |
|
|
964 | else if (w->repeat) |
|
|
965 | ev_timer_start (w); |
|
|
966 | } |
|
|
967 | |
|
|
968 | void |
|
|
969 | ev_periodic_start (struct ev_periodic *w) |
|
|
970 | { |
|
|
971 | if (ev_is_active (w)) |
|
|
972 | return; |
|
|
973 | |
|
|
974 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
975 | |
|
|
976 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
977 | if (w->interval) |
|
|
978 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
979 | |
|
|
980 | ev_start ((W)w, ++periodiccnt); |
|
|
981 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
982 | periodics [periodiccnt - 1] = w; |
|
|
983 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
984 | } |
|
|
985 | |
|
|
986 | void |
|
|
987 | ev_periodic_stop (struct ev_periodic *w) |
|
|
988 | { |
|
|
989 | ev_clear_pending ((W)w); |
|
|
990 | if (!ev_is_active (w)) |
|
|
991 | return; |
|
|
992 | |
|
|
993 | if (w->active < periodiccnt--) |
|
|
994 | { |
|
|
995 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
996 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
997 | } |
|
|
998 | |
|
|
999 | ev_stop ((W)w); |
|
|
1000 | } |
|
|
1001 | |
|
|
1002 | void |
|
|
1003 | ev_signal_start (struct ev_signal *w) |
|
|
1004 | { |
|
|
1005 | if (ev_is_active (w)) |
|
|
1006 | return; |
|
|
1007 | |
|
|
1008 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1009 | |
|
|
1010 | ev_start ((W)w, 1); |
|
|
1011 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
1012 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1013 | |
|
|
1014 | if (!w->next) |
|
|
1015 | { |
|
|
1016 | struct sigaction sa; |
|
|
1017 | sa.sa_handler = sighandler; |
|
|
1018 | sigfillset (&sa.sa_mask); |
|
|
1019 | sa.sa_flags = 0; |
|
|
1020 | sigaction (w->signum, &sa, 0); |
|
|
1021 | } |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | void |
|
|
1025 | ev_signal_stop (struct ev_signal *w) |
|
|
1026 | { |
|
|
1027 | ev_clear_pending ((W)w); |
|
|
1028 | if (!ev_is_active (w)) |
|
|
1029 | return; |
|
|
1030 | |
|
|
1031 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1032 | ev_stop ((W)w); |
|
|
1033 | |
|
|
1034 | if (!signals [w->signum - 1].head) |
|
|
1035 | signal (w->signum, SIG_DFL); |
|
|
1036 | } |
|
|
1037 | |
|
|
1038 | void |
|
|
1039 | ev_idle_start (struct ev_idle *w) |
|
|
1040 | { |
|
|
1041 | if (ev_is_active (w)) |
|
|
1042 | return; |
|
|
1043 | |
|
|
1044 | ev_start ((W)w, ++idlecnt); |
|
|
1045 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1046 | idles [idlecnt - 1] = w; |
|
|
1047 | } |
|
|
1048 | |
|
|
1049 | void |
|
|
1050 | ev_idle_stop (struct ev_idle *w) |
|
|
1051 | { |
|
|
1052 | ev_clear_pending ((W)w); |
|
|
1053 | if (ev_is_active (w)) |
|
|
1054 | return; |
|
|
1055 | |
|
|
1056 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1057 | ev_stop ((W)w); |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | void |
|
|
1061 | ev_prepare_start (struct ev_prepare *w) |
|
|
1062 | { |
|
|
1063 | if (ev_is_active (w)) |
|
|
1064 | return; |
|
|
1065 | |
|
|
1066 | ev_start ((W)w, ++preparecnt); |
|
|
1067 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1068 | prepares [preparecnt - 1] = w; |
|
|
1069 | } |
|
|
1070 | |
|
|
1071 | void |
|
|
1072 | ev_prepare_stop (struct ev_prepare *w) |
|
|
1073 | { |
|
|
1074 | ev_clear_pending ((W)w); |
|
|
1075 | if (ev_is_active (w)) |
|
|
1076 | return; |
|
|
1077 | |
|
|
1078 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1079 | ev_stop ((W)w); |
|
|
1080 | } |
|
|
1081 | |
|
|
1082 | void |
|
|
1083 | ev_check_start (struct ev_check *w) |
|
|
1084 | { |
|
|
1085 | if (ev_is_active (w)) |
|
|
1086 | return; |
|
|
1087 | |
|
|
1088 | ev_start ((W)w, ++checkcnt); |
|
|
1089 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1090 | checks [checkcnt - 1] = w; |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | void |
|
|
1094 | ev_check_stop (struct ev_check *w) |
|
|
1095 | { |
|
|
1096 | ev_clear_pending ((W)w); |
|
|
1097 | if (ev_is_active (w)) |
|
|
1098 | return; |
|
|
1099 | |
|
|
1100 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1101 | ev_stop ((W)w); |
|
|
1102 | } |
|
|
1103 | |
|
|
1104 | void |
|
|
1105 | ev_child_start (struct ev_child *w) |
|
|
1106 | { |
|
|
1107 | if (ev_is_active (w)) |
|
|
1108 | return; |
|
|
1109 | |
|
|
1110 | ev_start ((W)w, 1); |
|
|
1111 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1112 | } |
|
|
1113 | |
|
|
1114 | void |
|
|
1115 | ev_child_stop (struct ev_child *w) |
|
|
1116 | { |
|
|
1117 | ev_clear_pending ((W)w); |
|
|
1118 | if (ev_is_active (w)) |
|
|
1119 | return; |
|
|
1120 | |
|
|
1121 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1122 | ev_stop ((W)w); |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | /*****************************************************************************/ |
|
|
1126 | |
|
|
1127 | struct ev_once |
5447 | struct ev_once |
1128 | { |
5448 | { |
1129 | struct ev_io io; |
5449 | ev_io io; |
1130 | struct ev_timer to; |
5450 | ev_timer to; |
1131 | void (*cb)(int revents, void *arg); |
5451 | void (*cb)(int revents, void *arg); |
1132 | void *arg; |
5452 | void *arg; |
1133 | }; |
5453 | }; |
1134 | |
5454 | |
1135 | static void |
5455 | static void |
1136 | once_cb (struct ev_once *once, int revents) |
5456 | once_cb (EV_P_ struct ev_once *once, int revents) |
1137 | { |
5457 | { |
1138 | void (*cb)(int revents, void *arg) = once->cb; |
5458 | void (*cb)(int revents, void *arg) = once->cb; |
1139 | void *arg = once->arg; |
5459 | void *arg = once->arg; |
1140 | |
5460 | |
1141 | ev_io_stop (&once->io); |
5461 | ev_io_stop (EV_A_ &once->io); |
1142 | ev_timer_stop (&once->to); |
5462 | ev_timer_stop (EV_A_ &once->to); |
1143 | free (once); |
5463 | ev_free (once); |
1144 | |
5464 | |
1145 | cb (revents, arg); |
5465 | cb (revents, arg); |
1146 | } |
5466 | } |
1147 | |
5467 | |
1148 | static void |
5468 | static void |
1149 | once_cb_io (struct ev_io *w, int revents) |
5469 | once_cb_io (EV_P_ ev_io *w, int revents) |
1150 | { |
5470 | { |
1151 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
5471 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
5472 | |
|
|
5473 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1152 | } |
5474 | } |
1153 | |
5475 | |
1154 | static void |
5476 | static void |
1155 | once_cb_to (struct ev_timer *w, int revents) |
5477 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1156 | { |
5478 | { |
1157 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
5479 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
5480 | |
|
|
5481 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1158 | } |
5482 | } |
1159 | |
5483 | |
1160 | void |
5484 | void |
1161 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
5485 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_NOEXCEPT |
1162 | { |
5486 | { |
1163 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
5487 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1164 | |
5488 | |
1165 | if (!once) |
|
|
1166 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
1167 | else |
|
|
1168 | { |
|
|
1169 | once->cb = cb; |
5489 | once->cb = cb; |
1170 | once->arg = arg; |
5490 | once->arg = arg; |
1171 | |
5491 | |
1172 | ev_watcher_init (&once->io, once_cb_io); |
5492 | ev_init (&once->io, once_cb_io); |
1173 | if (fd >= 0) |
5493 | if (fd >= 0) |
|
|
5494 | { |
|
|
5495 | ev_io_set (&once->io, fd, events); |
|
|
5496 | ev_io_start (EV_A_ &once->io); |
|
|
5497 | } |
|
|
5498 | |
|
|
5499 | ev_init (&once->to, once_cb_to); |
|
|
5500 | if (timeout >= 0.) |
|
|
5501 | { |
|
|
5502 | ev_timer_set (&once->to, timeout, 0.); |
|
|
5503 | ev_timer_start (EV_A_ &once->to); |
|
|
5504 | } |
|
|
5505 | } |
|
|
5506 | |
|
|
5507 | /*****************************************************************************/ |
|
|
5508 | |
|
|
5509 | #if EV_WALK_ENABLE |
|
|
5510 | ecb_cold |
|
|
5511 | void |
|
|
5512 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_NOEXCEPT |
|
|
5513 | { |
|
|
5514 | int i, j; |
|
|
5515 | ev_watcher_list *wl, *wn; |
|
|
5516 | |
|
|
5517 | if (types & (EV_IO | EV_EMBED)) |
|
|
5518 | for (i = 0; i < anfdmax; ++i) |
|
|
5519 | for (wl = anfds [i].head; wl; ) |
1174 | { |
5520 | { |
1175 | ev_io_set (&once->io, fd, events); |
5521 | wn = wl->next; |
1176 | ev_io_start (&once->io); |
5522 | |
|
|
5523 | #if EV_EMBED_ENABLE |
|
|
5524 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
5525 | { |
|
|
5526 | if (types & EV_EMBED) |
|
|
5527 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
5528 | } |
|
|
5529 | else |
|
|
5530 | #endif |
|
|
5531 | #if EV_USE_INOTIFY |
|
|
5532 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
5533 | ; |
|
|
5534 | else |
|
|
5535 | #endif |
|
|
5536 | if ((ev_io *)wl != &pipe_w) |
|
|
5537 | if (types & EV_IO) |
|
|
5538 | cb (EV_A_ EV_IO, wl); |
|
|
5539 | |
|
|
5540 | wl = wn; |
1177 | } |
5541 | } |
1178 | |
5542 | |
1179 | ev_watcher_init (&once->to, once_cb_to); |
5543 | if (types & (EV_TIMER | EV_STAT)) |
1180 | if (timeout >= 0.) |
5544 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
5545 | #if EV_STAT_ENABLE |
|
|
5546 | /*TODO: timer is not always active*/ |
|
|
5547 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1181 | { |
5548 | { |
1182 | ev_timer_set (&once->to, timeout, 0.); |
5549 | if (types & EV_STAT) |
1183 | ev_timer_start (&once->to); |
5550 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1184 | } |
5551 | } |
1185 | } |
5552 | else |
1186 | } |
5553 | #endif |
|
|
5554 | if (types & EV_TIMER) |
|
|
5555 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1187 | |
5556 | |
1188 | /*****************************************************************************/ |
5557 | #if EV_PERIODIC_ENABLE |
|
|
5558 | if (types & EV_PERIODIC) |
|
|
5559 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
5560 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
5561 | #endif |
1189 | |
5562 | |
1190 | #if 0 |
5563 | #if EV_IDLE_ENABLE |
|
|
5564 | if (types & EV_IDLE) |
|
|
5565 | for (j = NUMPRI; j--; ) |
|
|
5566 | for (i = idlecnt [j]; i--; ) |
|
|
5567 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
5568 | #endif |
1191 | |
5569 | |
1192 | struct ev_io wio; |
5570 | #if EV_FORK_ENABLE |
|
|
5571 | if (types & EV_FORK) |
|
|
5572 | for (i = forkcnt; i--; ) |
|
|
5573 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
5574 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
5575 | #endif |
1193 | |
5576 | |
1194 | static void |
5577 | #if EV_ASYNC_ENABLE |
1195 | sin_cb (struct ev_io *w, int revents) |
5578 | if (types & EV_ASYNC) |
1196 | { |
5579 | for (i = asynccnt; i--; ) |
1197 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
5580 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1198 | } |
5581 | #endif |
1199 | |
5582 | |
1200 | static void |
5583 | #if EV_PREPARE_ENABLE |
1201 | ocb (struct ev_timer *w, int revents) |
5584 | if (types & EV_PREPARE) |
1202 | { |
5585 | for (i = preparecnt; i--; ) |
1203 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
5586 | # if EV_EMBED_ENABLE |
1204 | ev_timer_stop (w); |
5587 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1205 | ev_timer_start (w); |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | static void |
|
|
1209 | scb (struct ev_signal *w, int revents) |
|
|
1210 | { |
|
|
1211 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1212 | ev_io_stop (&wio); |
|
|
1213 | ev_io_start (&wio); |
|
|
1214 | } |
|
|
1215 | |
|
|
1216 | static void |
|
|
1217 | gcb (struct ev_signal *w, int revents) |
|
|
1218 | { |
|
|
1219 | fprintf (stderr, "generic %x\n", revents); |
|
|
1220 | |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | int main (void) |
|
|
1224 | { |
|
|
1225 | ev_init (0); |
|
|
1226 | |
|
|
1227 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1228 | ev_io_start (&wio); |
|
|
1229 | |
|
|
1230 | struct ev_timer t[10000]; |
|
|
1231 | |
|
|
1232 | #if 0 |
|
|
1233 | int i; |
|
|
1234 | for (i = 0; i < 10000; ++i) |
|
|
1235 | { |
|
|
1236 | struct ev_timer *w = t + i; |
|
|
1237 | ev_watcher_init (w, ocb, i); |
|
|
1238 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1239 | ev_timer_start (w); |
|
|
1240 | if (drand48 () < 0.5) |
|
|
1241 | ev_timer_stop (w); |
|
|
1242 | } |
|
|
1243 | #endif |
5588 | # endif |
1244 | |
5589 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1245 | struct ev_timer t1; |
|
|
1246 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1247 | ev_timer_start (&t1); |
|
|
1248 | |
|
|
1249 | struct ev_signal sig; |
|
|
1250 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1251 | ev_signal_start (&sig); |
|
|
1252 | |
|
|
1253 | struct ev_check cw; |
|
|
1254 | ev_check_init (&cw, gcb); |
|
|
1255 | ev_check_start (&cw); |
|
|
1256 | |
|
|
1257 | struct ev_idle iw; |
|
|
1258 | ev_idle_init (&iw, gcb); |
|
|
1259 | ev_idle_start (&iw); |
|
|
1260 | |
|
|
1261 | ev_loop (0); |
|
|
1262 | |
|
|
1263 | return 0; |
|
|
1264 | } |
|
|
1265 | |
|
|
1266 | #endif |
5590 | #endif |
1267 | |
5591 | |
|
|
5592 | #if EV_CHECK_ENABLE |
|
|
5593 | if (types & EV_CHECK) |
|
|
5594 | for (i = checkcnt; i--; ) |
|
|
5595 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
5596 | #endif |
1268 | |
5597 | |
|
|
5598 | #if EV_SIGNAL_ENABLE |
|
|
5599 | if (types & EV_SIGNAL) |
|
|
5600 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
5601 | for (wl = signals [i].head; wl; ) |
|
|
5602 | { |
|
|
5603 | wn = wl->next; |
|
|
5604 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
5605 | wl = wn; |
|
|
5606 | } |
|
|
5607 | #endif |
1269 | |
5608 | |
|
|
5609 | #if EV_CHILD_ENABLE |
|
|
5610 | if (types & EV_CHILD) |
|
|
5611 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
5612 | for (wl = childs [i]; wl; ) |
|
|
5613 | { |
|
|
5614 | wn = wl->next; |
|
|
5615 | cb (EV_A_ EV_CHILD, wl); |
|
|
5616 | wl = wn; |
|
|
5617 | } |
|
|
5618 | #endif |
|
|
5619 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
5620 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
5621 | } |
|
|
5622 | #endif |
1270 | |
5623 | |
|
|
5624 | #if EV_MULTIPLICITY |
|
|
5625 | #include "ev_wrap.h" |
|
|
5626 | #endif |
|
|
5627 | |