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) 2007,2008,2009,2010,2011,2012,2013 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_KQUEUE && HAVE_SYS_EVENT_H |
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121 | # ifndef EV_USE_KQUEUE |
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122 | # define EV_USE_KQUEUE EV_FEATURE_BACKENDS |
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123 | # endif |
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124 | # else |
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125 | # undef EV_USE_KQUEUE |
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126 | # define EV_USE_KQUEUE 0 |
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127 | # endif |
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128 | |
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129 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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130 | # ifndef EV_USE_PORT |
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131 | # define EV_USE_PORT EV_FEATURE_BACKENDS |
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132 | # endif |
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133 | # else |
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134 | # undef EV_USE_PORT |
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135 | # define EV_USE_PORT 0 |
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136 | # endif |
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137 | |
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138 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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139 | # ifndef EV_USE_INOTIFY |
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140 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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141 | # endif |
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142 | # else |
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143 | # undef EV_USE_INOTIFY |
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144 | # define EV_USE_INOTIFY 0 |
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145 | # endif |
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146 | |
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147 | # if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H |
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148 | # ifndef EV_USE_SIGNALFD |
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149 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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150 | # endif |
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151 | # else |
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152 | # undef EV_USE_SIGNALFD |
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153 | # define EV_USE_SIGNALFD 0 |
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154 | # endif |
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155 | |
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156 | # if HAVE_EVENTFD |
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157 | # ifndef EV_USE_EVENTFD |
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158 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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159 | # endif |
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160 | # else |
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161 | # undef EV_USE_EVENTFD |
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162 | # define EV_USE_EVENTFD 0 |
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163 | # endif |
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164 | |
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165 | #endif |
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166 | |
36 | #include <stdlib.h> |
167 | #include <stdlib.h> |
37 | #include <unistd.h> |
168 | #include <string.h> |
38 | #include <fcntl.h> |
169 | #include <fcntl.h> |
39 | #include <signal.h> |
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40 | #include <stddef.h> |
170 | #include <stddef.h> |
41 | |
171 | |
42 | #include <stdio.h> |
172 | #include <stdio.h> |
43 | |
173 | |
44 | #include <assert.h> |
174 | #include <assert.h> |
45 | #include <errno.h> |
175 | #include <errno.h> |
46 | #include <sys/types.h> |
176 | #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> |
177 | #include <time.h> |
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178 | #include <limits.h> |
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179 | |
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180 | #include <signal.h> |
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181 | |
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182 | #ifdef EV_H |
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183 | # include EV_H |
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184 | #else |
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185 | # include "ev.h" |
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186 | #endif |
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187 | |
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188 | #if EV_NO_THREADS |
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189 | # undef EV_NO_SMP |
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190 | # define EV_NO_SMP 1 |
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191 | # undef ECB_NO_THREADS |
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192 | # define ECB_NO_THREADS 1 |
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193 | #endif |
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194 | #if EV_NO_SMP |
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195 | # undef EV_NO_SMP |
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196 | # define ECB_NO_SMP 1 |
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197 | #endif |
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198 | |
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199 | #ifndef _WIN32 |
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200 | # include <sys/time.h> |
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201 | # include <sys/wait.h> |
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202 | # include <unistd.h> |
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203 | #else |
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204 | # include <io.h> |
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205 | # define WIN32_LEAN_AND_MEAN |
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206 | # include <winsock2.h> |
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207 | # include <windows.h> |
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208 | # ifndef EV_SELECT_IS_WINSOCKET |
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209 | # define EV_SELECT_IS_WINSOCKET 1 |
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210 | # endif |
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211 | # undef EV_AVOID_STDIO |
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212 | #endif |
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213 | |
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214 | /* OS X, in its infinite idiocy, actually HARDCODES |
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215 | * a limit of 1024 into their select. Where people have brains, |
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216 | * OS X engineers apparently have a vacuum. Or maybe they were |
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217 | * ordered to have a vacuum, or they do anything for money. |
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218 | * This might help. Or not. |
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219 | */ |
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220 | #define _DARWIN_UNLIMITED_SELECT 1 |
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221 | |
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222 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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223 | |
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224 | /* try to deduce the maximum number of signals on this platform */ |
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225 | #if defined EV_NSIG |
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226 | /* use what's provided */ |
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227 | #elif defined NSIG |
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228 | # define EV_NSIG (NSIG) |
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229 | #elif defined _NSIG |
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230 | # define EV_NSIG (_NSIG) |
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231 | #elif defined SIGMAX |
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232 | # define EV_NSIG (SIGMAX+1) |
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233 | #elif defined SIG_MAX |
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234 | # define EV_NSIG (SIG_MAX+1) |
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235 | #elif defined _SIG_MAX |
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236 | # define EV_NSIG (_SIG_MAX+1) |
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237 | #elif defined MAXSIG |
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238 | # define EV_NSIG (MAXSIG+1) |
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239 | #elif defined MAX_SIG |
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240 | # define EV_NSIG (MAX_SIG+1) |
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241 | #elif defined SIGARRAYSIZE |
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242 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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243 | #elif defined _sys_nsig |
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244 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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245 | #else |
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246 | # define EV_NSIG (8 * sizeof (sigset_t) + 1) |
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247 | #endif |
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248 | |
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249 | #ifndef EV_USE_FLOOR |
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250 | # define EV_USE_FLOOR 0 |
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251 | #endif |
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252 | |
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253 | #ifndef EV_USE_CLOCK_SYSCALL |
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254 | # if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17 |
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255 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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256 | # else |
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257 | # define EV_USE_CLOCK_SYSCALL 0 |
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258 | # endif |
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259 | #endif |
50 | |
260 | |
51 | #ifndef EV_USE_MONOTONIC |
261 | #ifndef EV_USE_MONOTONIC |
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262 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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263 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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264 | # else |
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265 | # define EV_USE_MONOTONIC 0 |
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266 | # endif |
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267 | #endif |
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268 | |
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269 | #ifndef EV_USE_REALTIME |
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270 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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271 | #endif |
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272 | |
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273 | #ifndef EV_USE_NANOSLEEP |
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274 | # if _POSIX_C_SOURCE >= 199309L |
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275 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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276 | # else |
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277 | # define EV_USE_NANOSLEEP 0 |
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278 | # endif |
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279 | #endif |
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280 | |
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281 | #ifndef EV_USE_SELECT |
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282 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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283 | #endif |
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284 | |
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285 | #ifndef EV_USE_POLL |
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286 | # ifdef _WIN32 |
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287 | # define EV_USE_POLL 0 |
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288 | # else |
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289 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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290 | # endif |
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291 | #endif |
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292 | |
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293 | #ifndef EV_USE_EPOLL |
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294 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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295 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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296 | # else |
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297 | # define EV_USE_EPOLL 0 |
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298 | # endif |
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299 | #endif |
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300 | |
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301 | #ifndef EV_USE_KQUEUE |
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302 | # define EV_USE_KQUEUE 0 |
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303 | #endif |
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304 | |
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305 | #ifndef EV_USE_PORT |
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306 | # define EV_USE_PORT 0 |
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307 | #endif |
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308 | |
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309 | #ifndef EV_USE_INOTIFY |
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310 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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311 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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312 | # else |
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313 | # define EV_USE_INOTIFY 0 |
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314 | # endif |
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315 | #endif |
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316 | |
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317 | #ifndef EV_PID_HASHSIZE |
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318 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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319 | #endif |
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320 | |
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321 | #ifndef EV_INOTIFY_HASHSIZE |
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322 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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323 | #endif |
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324 | |
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325 | #ifndef EV_USE_EVENTFD |
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326 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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327 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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328 | # else |
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329 | # define EV_USE_EVENTFD 0 |
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330 | # endif |
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331 | #endif |
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332 | |
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333 | #ifndef EV_USE_SIGNALFD |
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334 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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335 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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336 | # else |
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337 | # define EV_USE_SIGNALFD 0 |
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338 | # endif |
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339 | #endif |
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340 | |
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341 | #if 0 /* debugging */ |
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342 | # define EV_VERIFY 3 |
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343 | # define EV_USE_4HEAP 1 |
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344 | # define EV_HEAP_CACHE_AT 1 |
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345 | #endif |
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346 | |
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347 | #ifndef EV_VERIFY |
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348 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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349 | #endif |
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350 | |
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351 | #ifndef EV_USE_4HEAP |
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352 | # define EV_USE_4HEAP EV_FEATURE_DATA |
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353 | #endif |
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354 | |
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355 | #ifndef EV_HEAP_CACHE_AT |
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356 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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357 | #endif |
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358 | |
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359 | #ifdef ANDROID |
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360 | /* supposedly, android doesn't typedef fd_mask */ |
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361 | # undef EV_USE_SELECT |
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362 | # define EV_USE_SELECT 0 |
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363 | /* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */ |
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364 | # undef EV_USE_CLOCK_SYSCALL |
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365 | # define EV_USE_CLOCK_SYSCALL 0 |
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366 | #endif |
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367 | |
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368 | /* aix's poll.h seems to cause lots of trouble */ |
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369 | #ifdef _AIX |
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370 | /* AIX has a completely broken poll.h header */ |
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371 | # undef EV_USE_POLL |
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372 | # define EV_USE_POLL 0 |
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373 | #endif |
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374 | |
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375 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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376 | /* which makes programs even slower. might work on other unices, too. */ |
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377 | #if EV_USE_CLOCK_SYSCALL |
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378 | # include <sys/syscall.h> |
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379 | # ifdef SYS_clock_gettime |
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380 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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381 | # undef EV_USE_MONOTONIC |
52 | # define EV_USE_MONOTONIC 1 |
382 | # define EV_USE_MONOTONIC 1 |
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383 | # else |
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384 | # undef EV_USE_CLOCK_SYSCALL |
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385 | # define EV_USE_CLOCK_SYSCALL 0 |
53 | #endif |
386 | # endif |
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387 | #endif |
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388 | |
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389 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
54 | |
390 | |
55 | #ifndef CLOCK_MONOTONIC |
391 | #ifndef CLOCK_MONOTONIC |
56 | # undef EV_USE_MONOTONIC |
392 | # undef EV_USE_MONOTONIC |
57 | # define EV_USE_MONOTONIC 0 |
393 | # define EV_USE_MONOTONIC 0 |
58 | #endif |
394 | #endif |
59 | |
395 | |
60 | #ifndef EV_USE_SELECT |
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61 | # define EV_USE_SELECT 1 |
|
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62 | #endif |
|
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63 | |
|
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64 | #ifndef EV_USE_EPOLL |
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65 | # define EV_USE_EPOLL 0 |
|
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66 | #endif |
|
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67 | |
|
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68 | #ifndef CLOCK_REALTIME |
396 | #ifndef CLOCK_REALTIME |
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397 | # undef EV_USE_REALTIME |
69 | # define EV_USE_REALTIME 0 |
398 | # define EV_USE_REALTIME 0 |
70 | #endif |
399 | #endif |
71 | #ifndef EV_USE_REALTIME |
400 | |
72 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
401 | #if !EV_STAT_ENABLE |
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402 | # undef EV_USE_INOTIFY |
|
|
403 | # define EV_USE_INOTIFY 0 |
|
|
404 | #endif |
|
|
405 | |
|
|
406 | #if !EV_USE_NANOSLEEP |
|
|
407 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
|
|
408 | # if !defined _WIN32 && !defined __hpux |
|
|
409 | # include <sys/select.h> |
73 | #endif |
410 | # endif |
|
|
411 | #endif |
|
|
412 | |
|
|
413 | #if EV_USE_INOTIFY |
|
|
414 | # include <sys/statfs.h> |
|
|
415 | # include <sys/inotify.h> |
|
|
416 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
417 | # ifndef IN_DONT_FOLLOW |
|
|
418 | # undef EV_USE_INOTIFY |
|
|
419 | # define EV_USE_INOTIFY 0 |
|
|
420 | # endif |
|
|
421 | #endif |
|
|
422 | |
|
|
423 | #if EV_USE_EVENTFD |
|
|
424 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
425 | # include <stdint.h> |
|
|
426 | # ifndef EFD_NONBLOCK |
|
|
427 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
428 | # endif |
|
|
429 | # ifndef EFD_CLOEXEC |
|
|
430 | # ifdef O_CLOEXEC |
|
|
431 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
432 | # else |
|
|
433 | # define EFD_CLOEXEC 02000000 |
|
|
434 | # endif |
|
|
435 | # endif |
|
|
436 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
437 | #endif |
|
|
438 | |
|
|
439 | #if EV_USE_SIGNALFD |
|
|
440 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
441 | # include <stdint.h> |
|
|
442 | # ifndef SFD_NONBLOCK |
|
|
443 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
444 | # endif |
|
|
445 | # ifndef SFD_CLOEXEC |
|
|
446 | # ifdef O_CLOEXEC |
|
|
447 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
448 | # else |
|
|
449 | # define SFD_CLOEXEC 02000000 |
|
|
450 | # endif |
|
|
451 | # endif |
|
|
452 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
453 | |
|
|
454 | struct signalfd_siginfo |
|
|
455 | { |
|
|
456 | uint32_t ssi_signo; |
|
|
457 | char pad[128 - sizeof (uint32_t)]; |
|
|
458 | }; |
|
|
459 | #endif |
|
|
460 | |
|
|
461 | /**/ |
|
|
462 | |
|
|
463 | #if EV_VERIFY >= 3 |
|
|
464 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
465 | #else |
|
|
466 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
467 | #endif |
|
|
468 | |
|
|
469 | /* |
|
|
470 | * This is used to work around floating point rounding problems. |
|
|
471 | * This value is good at least till the year 4000. |
|
|
472 | */ |
|
|
473 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
474 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
74 | |
475 | |
75 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
476 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
76 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
477 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
77 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
78 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
|
|
79 | |
478 | |
80 | #include "ev.h" |
479 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
480 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
81 | |
481 | |
82 | typedef struct ev_watcher *W; |
482 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
83 | typedef struct ev_watcher_list *WL; |
483 | /* ECB.H BEGIN */ |
84 | typedef struct ev_watcher_time *WT; |
484 | /* |
|
|
485 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
486 | * |
|
|
487 | * Copyright (©) 2009-2014 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
488 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
489 | * All rights reserved. |
|
|
490 | * |
|
|
491 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
492 | * tion, are permitted provided that the following conditions are met: |
|
|
493 | * |
|
|
494 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
495 | * this list of conditions and the following disclaimer. |
|
|
496 | * |
|
|
497 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
498 | * notice, this list of conditions and the following disclaimer in the |
|
|
499 | * documentation and/or other materials provided with the distribution. |
|
|
500 | * |
|
|
501 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
502 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
503 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
504 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
505 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
506 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
507 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
508 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
509 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
510 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
511 | */ |
85 | |
512 | |
86 | static ev_tstamp now, diff; /* monotonic clock */ |
513 | #ifndef ECB_H |
87 | ev_tstamp ev_now; |
514 | #define ECB_H |
88 | int ev_method; |
|
|
89 | |
515 | |
90 | static int have_monotonic; /* runtime */ |
516 | /* 16 bits major, 16 bits minor */ |
|
|
517 | #define ECB_VERSION 0x00010003 |
91 | |
518 | |
92 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
519 | #ifdef _WIN32 |
93 | static void (*method_modify)(int fd, int oev, int nev); |
520 | typedef signed char int8_t; |
94 | static void (*method_poll)(ev_tstamp timeout); |
521 | typedef unsigned char uint8_t; |
|
|
522 | typedef signed short int16_t; |
|
|
523 | typedef unsigned short uint16_t; |
|
|
524 | typedef signed int int32_t; |
|
|
525 | typedef unsigned int uint32_t; |
|
|
526 | #if __GNUC__ |
|
|
527 | typedef signed long long int64_t; |
|
|
528 | typedef unsigned long long uint64_t; |
|
|
529 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
530 | typedef signed __int64 int64_t; |
|
|
531 | typedef unsigned __int64 uint64_t; |
|
|
532 | #endif |
|
|
533 | #ifdef _WIN64 |
|
|
534 | #define ECB_PTRSIZE 8 |
|
|
535 | typedef uint64_t uintptr_t; |
|
|
536 | typedef int64_t intptr_t; |
|
|
537 | #else |
|
|
538 | #define ECB_PTRSIZE 4 |
|
|
539 | typedef uint32_t uintptr_t; |
|
|
540 | typedef int32_t intptr_t; |
|
|
541 | #endif |
|
|
542 | #else |
|
|
543 | #include <inttypes.h> |
|
|
544 | #if UINTMAX_MAX > 0xffffffffU |
|
|
545 | #define ECB_PTRSIZE 8 |
|
|
546 | #else |
|
|
547 | #define ECB_PTRSIZE 4 |
|
|
548 | #endif |
|
|
549 | #endif |
|
|
550 | |
|
|
551 | /* work around x32 idiocy by defining proper macros */ |
|
|
552 | #if __amd64 || __x86_64 || _M_AMD64 || _M_X64 |
|
|
553 | #if _ILP32 |
|
|
554 | #define ECB_AMD64_X32 1 |
|
|
555 | #else |
|
|
556 | #define ECB_AMD64 1 |
|
|
557 | #endif |
|
|
558 | #endif |
|
|
559 | |
|
|
560 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
561 | * what their idiot authors think are the "more important" extensions, |
|
|
562 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
563 | * or so. |
|
|
564 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
565 | * an issue with that they should have done it right in the first place. |
|
|
566 | */ |
|
|
567 | #ifndef ECB_GCC_VERSION |
|
|
568 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
569 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
570 | #else |
|
|
571 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
572 | #endif |
|
|
573 | #endif |
|
|
574 | |
|
|
575 | #define ECB_CPP (__cplusplus+0) |
|
|
576 | #define ECB_CPP11 (__cplusplus >= 201103L) |
|
|
577 | |
|
|
578 | #if ECB_CPP |
|
|
579 | #define ECB_C 0 |
|
|
580 | #define ECB_STDC_VERSION 0 |
|
|
581 | #else |
|
|
582 | #define ECB_C 1 |
|
|
583 | #define ECB_STDC_VERSION __STDC_VERSION__ |
|
|
584 | #endif |
|
|
585 | |
|
|
586 | #define ECB_C99 (ECB_STDC_VERSION >= 199901L) |
|
|
587 | #define ECB_C11 (ECB_STDC_VERSION >= 201112L) |
|
|
588 | |
|
|
589 | #if ECB_CPP |
|
|
590 | #define ECB_EXTERN_C extern "C" |
|
|
591 | #define ECB_EXTERN_C_BEG ECB_EXTERN_C { |
|
|
592 | #define ECB_EXTERN_C_END } |
|
|
593 | #else |
|
|
594 | #define ECB_EXTERN_C extern |
|
|
595 | #define ECB_EXTERN_C_BEG |
|
|
596 | #define ECB_EXTERN_C_END |
|
|
597 | #endif |
95 | |
598 | |
96 | /*****************************************************************************/ |
599 | /*****************************************************************************/ |
97 | |
600 | |
|
|
601 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
602 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
603 | |
|
|
604 | #if ECB_NO_THREADS |
|
|
605 | #define ECB_NO_SMP 1 |
|
|
606 | #endif |
|
|
607 | |
|
|
608 | #if ECB_NO_SMP |
|
|
609 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
610 | #endif |
|
|
611 | |
|
|
612 | #ifndef ECB_MEMORY_FENCE |
|
|
613 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
614 | #if __i386 || __i386__ |
|
|
615 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
616 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
617 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
618 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
|
|
619 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
620 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
621 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
622 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
623 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
624 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
625 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
|
|
626 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
627 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
628 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
|
|
629 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
630 | #elif __aarch64__ |
|
|
631 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory") |
|
|
632 | #elif (__sparc || __sparc__) && !__sparcv8 |
|
|
633 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
634 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
635 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
636 | #elif defined __s390__ || defined __s390x__ |
|
|
637 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
638 | #elif defined __mips__ |
|
|
639 | /* GNU/Linux emulates sync on mips1 architectures, so we force its use */ |
|
|
640 | /* anybody else who still uses mips1 is supposed to send in their version, with detection code. */ |
|
|
641 | #define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory") |
|
|
642 | #elif defined __alpha__ |
|
|
643 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
644 | #elif defined __hppa__ |
|
|
645 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
646 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
647 | #elif defined __ia64__ |
|
|
648 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
649 | #elif defined __m68k__ |
|
|
650 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
651 | #elif defined __m88k__ |
|
|
652 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory") |
|
|
653 | #elif defined __sh__ |
|
|
654 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
655 | #endif |
|
|
656 | #endif |
|
|
657 | #endif |
|
|
658 | |
|
|
659 | #ifndef ECB_MEMORY_FENCE |
|
|
660 | #if ECB_GCC_VERSION(4,7) |
|
|
661 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
662 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
663 | #define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
664 | #define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
665 | |
|
|
666 | /* The __has_feature syntax from clang is so misdesigned that we cannot use it |
|
|
667 | * without risking compile time errors with other compilers. We *could* |
|
|
668 | * define our own ecb_clang_has_feature, but I just can't be bothered to work |
|
|
669 | * around this shit time and again. |
|
|
670 | * #elif defined __clang && __has_feature (cxx_atomic) |
|
|
671 | * // see comment below (stdatomic.h) about the C11 memory model. |
|
|
672 | * #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
673 | * #define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE) |
|
|
674 | * #define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE) |
|
|
675 | */ |
|
|
676 | |
|
|
677 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
678 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
679 | #elif _MSC_VER >= 1500 /* VC++ 2008 */ |
|
|
680 | /* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */ |
|
|
681 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
682 | #define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier() |
|
|
683 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
684 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier() |
|
|
685 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
686 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
687 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
688 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
689 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
690 | #elif defined _WIN32 |
|
|
691 | #include <WinNT.h> |
|
|
692 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
693 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
694 | #include <mbarrier.h> |
|
|
695 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
696 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
697 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
698 | #elif __xlC__ |
|
|
699 | #define ECB_MEMORY_FENCE __sync () |
|
|
700 | #endif |
|
|
701 | #endif |
|
|
702 | |
|
|
703 | #ifndef ECB_MEMORY_FENCE |
|
|
704 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
705 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
706 | /* not just C11 atomics and atomic accesses */ |
|
|
707 | #include <stdatomic.h> |
|
|
708 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
709 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
710 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
711 | /* for most usages, or gcc and clang have a bug */ |
|
|
712 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
713 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
714 | /* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */ |
|
|
715 | /* for all __atomic_thread_fence's except seq_cst */ |
|
|
716 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
717 | #endif |
|
|
718 | #endif |
|
|
719 | |
|
|
720 | #ifndef ECB_MEMORY_FENCE |
|
|
721 | #if !ECB_AVOID_PTHREADS |
|
|
722 | /* |
|
|
723 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
724 | * or failure to find pthread.h, then you should implement |
|
|
725 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
726 | * OR provide pthread.h and link against the posix thread library |
|
|
727 | * of your system. |
|
|
728 | */ |
|
|
729 | #include <pthread.h> |
|
|
730 | #define ECB_NEEDS_PTHREADS 1 |
|
|
731 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
732 | |
|
|
733 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
734 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
735 | #endif |
|
|
736 | #endif |
|
|
737 | |
|
|
738 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
739 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
740 | #endif |
|
|
741 | |
|
|
742 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
743 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
744 | #endif |
|
|
745 | |
|
|
746 | /*****************************************************************************/ |
|
|
747 | |
|
|
748 | #if __cplusplus |
|
|
749 | #define ecb_inline static inline |
|
|
750 | #elif ECB_GCC_VERSION(2,5) |
|
|
751 | #define ecb_inline static __inline__ |
|
|
752 | #elif ECB_C99 |
|
|
753 | #define ecb_inline static inline |
|
|
754 | #else |
|
|
755 | #define ecb_inline static |
|
|
756 | #endif |
|
|
757 | |
|
|
758 | #if ECB_GCC_VERSION(3,3) |
|
|
759 | #define ecb_restrict __restrict__ |
|
|
760 | #elif ECB_C99 |
|
|
761 | #define ecb_restrict restrict |
|
|
762 | #else |
|
|
763 | #define ecb_restrict |
|
|
764 | #endif |
|
|
765 | |
|
|
766 | typedef int ecb_bool; |
|
|
767 | |
|
|
768 | #define ECB_CONCAT_(a, b) a ## b |
|
|
769 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
770 | #define ECB_STRINGIFY_(a) # a |
|
|
771 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
772 | |
|
|
773 | #define ecb_function_ ecb_inline |
|
|
774 | |
|
|
775 | #if ECB_GCC_VERSION(3,1) |
|
|
776 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
777 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
778 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
779 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
780 | #else |
|
|
781 | #define ecb_attribute(attrlist) |
|
|
782 | |
|
|
783 | /* possible C11 impl for integral types |
|
|
784 | typedef struct ecb_is_constant_struct ecb_is_constant_struct; |
|
|
785 | #define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */ |
|
|
786 | |
|
|
787 | #define ecb_is_constant(expr) 0 |
|
|
788 | #define ecb_expect(expr,value) (expr) |
|
|
789 | #define ecb_prefetch(addr,rw,locality) |
|
|
790 | #endif |
|
|
791 | |
|
|
792 | /* no emulation for ecb_decltype */ |
|
|
793 | #if ECB_GCC_VERSION(4,5) |
|
|
794 | #define ecb_decltype(x) __decltype(x) |
|
|
795 | #elif ECB_GCC_VERSION(3,0) |
|
|
796 | #define ecb_decltype(x) __typeof(x) |
|
|
797 | #endif |
|
|
798 | |
|
|
799 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
800 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
801 | #define ecb_const ecb_attribute ((__const__)) |
|
|
802 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
803 | |
|
|
804 | #if ECB_C11 |
|
|
805 | #define ecb_noreturn _Noreturn |
|
|
806 | #else |
|
|
807 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
808 | #endif |
|
|
809 | |
|
|
810 | #if ECB_GCC_VERSION(4,3) |
|
|
811 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
812 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
813 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
814 | #else |
|
|
815 | #define ecb_artificial |
|
|
816 | #define ecb_hot |
|
|
817 | #define ecb_cold |
|
|
818 | #endif |
|
|
819 | |
|
|
820 | /* put around conditional expressions if you are very sure that the */ |
|
|
821 | /* expression is mostly true or mostly false. note that these return */ |
|
|
822 | /* booleans, not the expression. */ |
|
|
823 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
|
|
824 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
825 | /* for compatibility to the rest of the world */ |
|
|
826 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
827 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
828 | |
|
|
829 | /* count trailing zero bits and count # of one bits */ |
|
|
830 | #if ECB_GCC_VERSION(3,4) |
|
|
831 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
832 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
833 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
834 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
835 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
836 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
837 | /* no popcountll */ |
|
|
838 | #else |
|
|
839 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
840 | ecb_function_ int |
|
|
841 | ecb_ctz32 (uint32_t x) |
|
|
842 | { |
|
|
843 | int r = 0; |
|
|
844 | |
|
|
845 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
846 | |
|
|
847 | #if ECB_branchless_on_i386 |
|
|
848 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
849 | r += !!(x & 0xcccccccc) << 1; |
|
|
850 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
851 | r += !!(x & 0xff00ff00) << 3; |
|
|
852 | r += !!(x & 0xffff0000) << 4; |
|
|
853 | #else |
|
|
854 | if (x & 0xaaaaaaaa) r += 1; |
|
|
855 | if (x & 0xcccccccc) r += 2; |
|
|
856 | if (x & 0xf0f0f0f0) r += 4; |
|
|
857 | if (x & 0xff00ff00) r += 8; |
|
|
858 | if (x & 0xffff0000) r += 16; |
|
|
859 | #endif |
|
|
860 | |
|
|
861 | return r; |
|
|
862 | } |
|
|
863 | |
|
|
864 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
865 | ecb_function_ int |
|
|
866 | ecb_ctz64 (uint64_t x) |
|
|
867 | { |
|
|
868 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
869 | return ecb_ctz32 (x >> shift) + shift; |
|
|
870 | } |
|
|
871 | |
|
|
872 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
873 | ecb_function_ int |
|
|
874 | ecb_popcount32 (uint32_t x) |
|
|
875 | { |
|
|
876 | x -= (x >> 1) & 0x55555555; |
|
|
877 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
878 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
879 | x *= 0x01010101; |
|
|
880 | |
|
|
881 | return x >> 24; |
|
|
882 | } |
|
|
883 | |
|
|
884 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
885 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
886 | { |
|
|
887 | int r = 0; |
|
|
888 | |
|
|
889 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
890 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
891 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
892 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
893 | if (x >> 1) { r += 1; } |
|
|
894 | |
|
|
895 | return r; |
|
|
896 | } |
|
|
897 | |
|
|
898 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
899 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
900 | { |
|
|
901 | int r = 0; |
|
|
902 | |
|
|
903 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
904 | |
|
|
905 | return r + ecb_ld32 (x); |
|
|
906 | } |
|
|
907 | #endif |
|
|
908 | |
|
|
909 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
|
|
910 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
911 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
|
|
912 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
913 | |
|
|
914 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
|
|
915 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
|
|
916 | { |
|
|
917 | return ( (x * 0x0802U & 0x22110U) |
|
|
918 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
919 | } |
|
|
920 | |
|
|
921 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
|
|
922 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
|
|
923 | { |
|
|
924 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
925 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
926 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
927 | x = ( x >> 8 ) | ( x << 8); |
|
|
928 | |
|
|
929 | return x; |
|
|
930 | } |
|
|
931 | |
|
|
932 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
|
|
933 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
|
|
934 | { |
|
|
935 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
936 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
937 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
938 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
939 | x = ( x >> 16 ) | ( x << 16); |
|
|
940 | |
|
|
941 | return x; |
|
|
942 | } |
|
|
943 | |
|
|
944 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
945 | /* so for this version we are lazy */ |
|
|
946 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
947 | ecb_function_ int |
|
|
948 | ecb_popcount64 (uint64_t x) |
|
|
949 | { |
|
|
950 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
951 | } |
|
|
952 | |
|
|
953 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
954 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
955 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
956 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
957 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
958 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
959 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
960 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
961 | |
|
|
962 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
963 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
964 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
965 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
966 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
967 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
968 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
969 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
970 | |
|
|
971 | #if ECB_GCC_VERSION(4,3) |
|
|
972 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
973 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
974 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
975 | #else |
|
|
976 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
977 | ecb_function_ uint16_t |
|
|
978 | ecb_bswap16 (uint16_t x) |
|
|
979 | { |
|
|
980 | return ecb_rotl16 (x, 8); |
|
|
981 | } |
|
|
982 | |
|
|
983 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
984 | ecb_function_ uint32_t |
|
|
985 | ecb_bswap32 (uint32_t x) |
|
|
986 | { |
|
|
987 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
988 | } |
|
|
989 | |
|
|
990 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
991 | ecb_function_ uint64_t |
|
|
992 | ecb_bswap64 (uint64_t x) |
|
|
993 | { |
|
|
994 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
995 | } |
|
|
996 | #endif |
|
|
997 | |
|
|
998 | #if ECB_GCC_VERSION(4,5) |
|
|
999 | #define ecb_unreachable() __builtin_unreachable () |
|
|
1000 | #else |
|
|
1001 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
1002 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
|
|
1003 | ecb_inline void ecb_unreachable (void) { } |
|
|
1004 | #endif |
|
|
1005 | |
|
|
1006 | /* try to tell the compiler that some condition is definitely true */ |
|
|
1007 | #define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0 |
|
|
1008 | |
|
|
1009 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
1010 | ecb_inline unsigned char |
|
|
1011 | ecb_byteorder_helper (void) |
|
|
1012 | { |
|
|
1013 | /* the union code still generates code under pressure in gcc, */ |
|
|
1014 | /* but less than using pointers, and always seems to */ |
|
|
1015 | /* successfully return a constant. */ |
|
|
1016 | /* the reason why we have this horrible preprocessor mess */ |
|
|
1017 | /* is to avoid it in all cases, at least on common architectures */ |
|
|
1018 | /* or when using a recent enough gcc version (>= 4.6) */ |
|
|
1019 | #if __i386 || __i386__ || _M_X86 || __amd64 || __amd64__ || _M_X64 |
|
|
1020 | return 0x44; |
|
|
1021 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
|
|
1022 | return 0x44; |
|
|
1023 | #elif __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
|
|
1024 | return 0x11; |
|
|
1025 | #else |
|
|
1026 | union |
|
|
1027 | { |
|
|
1028 | uint32_t i; |
|
|
1029 | uint8_t c; |
|
|
1030 | } u = { 0x11223344 }; |
|
|
1031 | return u.c; |
|
|
1032 | #endif |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
|
|
1036 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
1037 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
|
|
1038 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
1039 | |
|
|
1040 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
1041 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
1042 | #else |
|
|
1043 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
1044 | #endif |
|
|
1045 | |
|
|
1046 | #if __cplusplus |
|
|
1047 | template<typename T> |
|
|
1048 | static inline T ecb_div_rd (T val, T div) |
|
|
1049 | { |
|
|
1050 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
1051 | } |
|
|
1052 | template<typename T> |
|
|
1053 | static inline T ecb_div_ru (T val, T div) |
|
|
1054 | { |
|
|
1055 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
1056 | } |
|
|
1057 | #else |
|
|
1058 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
1059 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
1060 | #endif |
|
|
1061 | |
|
|
1062 | #if ecb_cplusplus_does_not_suck |
|
|
1063 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
1064 | template<typename T, int N> |
|
|
1065 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
1066 | { |
|
|
1067 | return N; |
|
|
1068 | } |
|
|
1069 | #else |
|
|
1070 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
1071 | #endif |
|
|
1072 | |
|
|
1073 | /*******************************************************************************/ |
|
|
1074 | /* floating point stuff, can be disabled by defining ECB_NO_LIBM */ |
|
|
1075 | |
|
|
1076 | /* basically, everything uses "ieee pure-endian" floating point numbers */ |
|
|
1077 | /* the only noteworthy exception is ancient armle, which uses order 43218765 */ |
|
|
1078 | #if 0 \ |
|
|
1079 | || __i386 || __i386__ \ |
|
|
1080 | || __amd64 || __amd64__ || __x86_64 || __x86_64__ \ |
|
|
1081 | || __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \ |
|
|
1082 | || defined __arm__ && defined __ARM_EABI__ \ |
|
|
1083 | || defined __s390__ || defined __s390x__ \ |
|
|
1084 | || defined __mips__ \ |
|
|
1085 | || defined __alpha__ \ |
|
|
1086 | || defined __hppa__ \ |
|
|
1087 | || defined __ia64__ \ |
|
|
1088 | || defined __m68k__ \ |
|
|
1089 | || defined __m88k__ \ |
|
|
1090 | || defined __sh__ \ |
|
|
1091 | || defined _M_IX86 || defined _M_AMD64 || defined _M_IA64 \ |
|
|
1092 | || (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) |
|
|
1093 | #define ECB_STDFP 1 |
|
|
1094 | #include <string.h> /* for memcpy */ |
|
|
1095 | #else |
|
|
1096 | #define ECB_STDFP 0 |
|
|
1097 | #endif |
|
|
1098 | |
|
|
1099 | #ifndef ECB_NO_LIBM |
|
|
1100 | |
|
|
1101 | #include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */ |
|
|
1102 | |
|
|
1103 | /* only the oldest of old doesn't have this one. solaris. */ |
|
|
1104 | #ifdef INFINITY |
|
|
1105 | #define ECB_INFINITY INFINITY |
|
|
1106 | #else |
|
|
1107 | #define ECB_INFINITY HUGE_VAL |
|
|
1108 | #endif |
|
|
1109 | |
|
|
1110 | #ifdef NAN |
|
|
1111 | #define ECB_NAN NAN |
|
|
1112 | #else |
|
|
1113 | #define ECB_NAN ECB_INFINITY |
|
|
1114 | #endif |
|
|
1115 | |
|
|
1116 | /* converts an ieee half/binary16 to a float */ |
|
|
1117 | ecb_function_ float ecb_binary16_to_float (uint16_t x) ecb_const; |
|
|
1118 | ecb_function_ float |
|
|
1119 | ecb_binary16_to_float (uint16_t x) |
|
|
1120 | { |
|
|
1121 | int e = (x >> 10) & 0x1f; |
|
|
1122 | int m = x & 0x3ff; |
|
|
1123 | float r; |
|
|
1124 | |
|
|
1125 | if (!e ) r = ldexpf (m , -24); |
|
|
1126 | else if (e != 31) r = ldexpf (m + 0x400, e - 25); |
|
|
1127 | else if (m ) r = ECB_NAN; |
|
|
1128 | else r = ECB_INFINITY; |
|
|
1129 | |
|
|
1130 | return x & 0x8000 ? -r : r; |
|
|
1131 | } |
|
|
1132 | |
|
|
1133 | /* convert a float to ieee single/binary32 */ |
|
|
1134 | ecb_function_ uint32_t ecb_float_to_binary32 (float x) ecb_const; |
|
|
1135 | ecb_function_ uint32_t |
|
|
1136 | ecb_float_to_binary32 (float x) |
|
|
1137 | { |
|
|
1138 | uint32_t r; |
|
|
1139 | |
|
|
1140 | #if ECB_STDFP |
|
|
1141 | memcpy (&r, &x, 4); |
|
|
1142 | #else |
|
|
1143 | /* slow emulation, works for anything but -0 */ |
|
|
1144 | uint32_t m; |
|
|
1145 | int e; |
|
|
1146 | |
|
|
1147 | if (x == 0e0f ) return 0x00000000U; |
|
|
1148 | if (x > +3.40282346638528860e+38f) return 0x7f800000U; |
|
|
1149 | if (x < -3.40282346638528860e+38f) return 0xff800000U; |
|
|
1150 | if (x != x ) return 0x7fbfffffU; |
|
|
1151 | |
|
|
1152 | m = frexpf (x, &e) * 0x1000000U; |
|
|
1153 | |
|
|
1154 | r = m & 0x80000000U; |
|
|
1155 | |
|
|
1156 | if (r) |
|
|
1157 | m = -m; |
|
|
1158 | |
|
|
1159 | if (e <= -126) |
|
|
1160 | { |
|
|
1161 | m &= 0xffffffU; |
|
|
1162 | m >>= (-125 - e); |
|
|
1163 | e = -126; |
|
|
1164 | } |
|
|
1165 | |
|
|
1166 | r |= (e + 126) << 23; |
|
|
1167 | r |= m & 0x7fffffU; |
|
|
1168 | #endif |
|
|
1169 | |
|
|
1170 | return r; |
|
|
1171 | } |
|
|
1172 | |
|
|
1173 | /* converts an ieee single/binary32 to a float */ |
|
|
1174 | ecb_function_ float ecb_binary32_to_float (uint32_t x) ecb_const; |
|
|
1175 | ecb_function_ float |
|
|
1176 | ecb_binary32_to_float (uint32_t x) |
|
|
1177 | { |
|
|
1178 | float r; |
|
|
1179 | |
|
|
1180 | #if ECB_STDFP |
|
|
1181 | memcpy (&r, &x, 4); |
|
|
1182 | #else |
|
|
1183 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1184 | int neg = x >> 31; |
|
|
1185 | int e = (x >> 23) & 0xffU; |
|
|
1186 | |
|
|
1187 | x &= 0x7fffffU; |
|
|
1188 | |
|
|
1189 | if (e) |
|
|
1190 | x |= 0x800000U; |
|
|
1191 | else |
|
|
1192 | e = 1; |
|
|
1193 | |
|
|
1194 | /* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */ |
|
|
1195 | r = ldexpf (x * (0.5f / 0x800000U), e - 126); |
|
|
1196 | |
|
|
1197 | r = neg ? -r : r; |
|
|
1198 | #endif |
|
|
1199 | |
|
|
1200 | return r; |
|
|
1201 | } |
|
|
1202 | |
|
|
1203 | /* convert a double to ieee double/binary64 */ |
|
|
1204 | ecb_function_ uint64_t ecb_double_to_binary64 (double x) ecb_const; |
|
|
1205 | ecb_function_ uint64_t |
|
|
1206 | ecb_double_to_binary64 (double x) |
|
|
1207 | { |
|
|
1208 | uint64_t r; |
|
|
1209 | |
|
|
1210 | #if ECB_STDFP |
|
|
1211 | memcpy (&r, &x, 8); |
|
|
1212 | #else |
|
|
1213 | /* slow emulation, works for anything but -0 */ |
|
|
1214 | uint64_t m; |
|
|
1215 | int e; |
|
|
1216 | |
|
|
1217 | if (x == 0e0 ) return 0x0000000000000000U; |
|
|
1218 | if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U; |
|
|
1219 | if (x < -1.79769313486231470e+308) return 0xfff0000000000000U; |
|
|
1220 | if (x != x ) return 0X7ff7ffffffffffffU; |
|
|
1221 | |
|
|
1222 | m = frexp (x, &e) * 0x20000000000000U; |
|
|
1223 | |
|
|
1224 | r = m & 0x8000000000000000;; |
|
|
1225 | |
|
|
1226 | if (r) |
|
|
1227 | m = -m; |
|
|
1228 | |
|
|
1229 | if (e <= -1022) |
|
|
1230 | { |
|
|
1231 | m &= 0x1fffffffffffffU; |
|
|
1232 | m >>= (-1021 - e); |
|
|
1233 | e = -1022; |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | r |= ((uint64_t)(e + 1022)) << 52; |
|
|
1237 | r |= m & 0xfffffffffffffU; |
|
|
1238 | #endif |
|
|
1239 | |
|
|
1240 | return r; |
|
|
1241 | } |
|
|
1242 | |
|
|
1243 | /* converts an ieee double/binary64 to a double */ |
|
|
1244 | ecb_function_ double ecb_binary64_to_double (uint64_t x) ecb_const; |
|
|
1245 | ecb_function_ double |
|
|
1246 | ecb_binary64_to_double (uint64_t x) |
|
|
1247 | { |
|
|
1248 | double r; |
|
|
1249 | |
|
|
1250 | #if ECB_STDFP |
|
|
1251 | memcpy (&r, &x, 8); |
|
|
1252 | #else |
|
|
1253 | /* emulation, only works for normals and subnormals and +0 */ |
|
|
1254 | int neg = x >> 63; |
|
|
1255 | int e = (x >> 52) & 0x7ffU; |
|
|
1256 | |
|
|
1257 | x &= 0xfffffffffffffU; |
|
|
1258 | |
|
|
1259 | if (e) |
|
|
1260 | x |= 0x10000000000000U; |
|
|
1261 | else |
|
|
1262 | e = 1; |
|
|
1263 | |
|
|
1264 | /* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */ |
|
|
1265 | r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022); |
|
|
1266 | |
|
|
1267 | r = neg ? -r : r; |
|
|
1268 | #endif |
|
|
1269 | |
|
|
1270 | return r; |
|
|
1271 | } |
|
|
1272 | |
|
|
1273 | #endif |
|
|
1274 | |
|
|
1275 | #endif |
|
|
1276 | |
|
|
1277 | /* ECB.H END */ |
|
|
1278 | |
|
|
1279 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
1280 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
1281 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
1282 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
1283 | * libev, in which cases the memory fences become nops. |
|
|
1284 | * alternatively, you can remove this #error and link against libpthread, |
|
|
1285 | * which will then provide the memory fences. |
|
|
1286 | */ |
|
|
1287 | # error "memory fences not defined for your architecture, please report" |
|
|
1288 | #endif |
|
|
1289 | |
|
|
1290 | #ifndef ECB_MEMORY_FENCE |
|
|
1291 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1292 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1293 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1294 | #endif |
|
|
1295 | |
|
|
1296 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1297 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1298 | #define noinline ecb_noinline |
|
|
1299 | |
|
|
1300 | #define inline_size ecb_inline |
|
|
1301 | |
|
|
1302 | #if EV_FEATURE_CODE |
|
|
1303 | # define inline_speed ecb_inline |
|
|
1304 | #else |
|
|
1305 | # define inline_speed static noinline |
|
|
1306 | #endif |
|
|
1307 | |
|
|
1308 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1309 | |
|
|
1310 | #if EV_MINPRI == EV_MAXPRI |
|
|
1311 | # define ABSPRI(w) (((W)w), 0) |
|
|
1312 | #else |
|
|
1313 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1314 | #endif |
|
|
1315 | |
|
|
1316 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
1317 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
1318 | |
|
|
1319 | typedef ev_watcher *W; |
|
|
1320 | typedef ev_watcher_list *WL; |
|
|
1321 | typedef ev_watcher_time *WT; |
|
|
1322 | |
|
|
1323 | #define ev_active(w) ((W)(w))->active |
|
|
1324 | #define ev_at(w) ((WT)(w))->at |
|
|
1325 | |
|
|
1326 | #if EV_USE_REALTIME |
|
|
1327 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1328 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1329 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1330 | #endif |
|
|
1331 | |
|
|
1332 | #if EV_USE_MONOTONIC |
|
|
1333 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1334 | #endif |
|
|
1335 | |
|
|
1336 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1337 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1338 | #endif |
|
|
1339 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1340 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1341 | #endif |
|
|
1342 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1343 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1344 | #endif |
|
|
1345 | |
|
|
1346 | #ifdef _WIN32 |
|
|
1347 | # include "ev_win32.c" |
|
|
1348 | #endif |
|
|
1349 | |
|
|
1350 | /*****************************************************************************/ |
|
|
1351 | |
|
|
1352 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1353 | |
|
|
1354 | #if EV_USE_FLOOR |
|
|
1355 | # include <math.h> |
|
|
1356 | # define ev_floor(v) floor (v) |
|
|
1357 | #else |
|
|
1358 | |
|
|
1359 | #include <float.h> |
|
|
1360 | |
|
|
1361 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1362 | static ev_tstamp noinline |
|
|
1363 | ev_floor (ev_tstamp v) |
|
|
1364 | { |
|
|
1365 | /* the choice of shift factor is not terribly important */ |
|
|
1366 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1367 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1368 | #else |
|
|
1369 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1370 | #endif |
|
|
1371 | |
|
|
1372 | /* argument too large for an unsigned long? */ |
|
|
1373 | if (expect_false (v >= shift)) |
|
|
1374 | { |
|
|
1375 | ev_tstamp f; |
|
|
1376 | |
|
|
1377 | if (v == v - 1.) |
|
|
1378 | return v; /* very large number */ |
|
|
1379 | |
|
|
1380 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1381 | return f + ev_floor (v - f); |
|
|
1382 | } |
|
|
1383 | |
|
|
1384 | /* special treatment for negative args? */ |
|
|
1385 | if (expect_false (v < 0.)) |
|
|
1386 | { |
|
|
1387 | ev_tstamp f = -ev_floor (-v); |
|
|
1388 | |
|
|
1389 | return f - (f == v ? 0 : 1); |
|
|
1390 | } |
|
|
1391 | |
|
|
1392 | /* fits into an unsigned long */ |
|
|
1393 | return (unsigned long)v; |
|
|
1394 | } |
|
|
1395 | |
|
|
1396 | #endif |
|
|
1397 | |
|
|
1398 | /*****************************************************************************/ |
|
|
1399 | |
|
|
1400 | #ifdef __linux |
|
|
1401 | # include <sys/utsname.h> |
|
|
1402 | #endif |
|
|
1403 | |
|
|
1404 | static unsigned int noinline ecb_cold |
|
|
1405 | ev_linux_version (void) |
|
|
1406 | { |
|
|
1407 | #ifdef __linux |
|
|
1408 | unsigned int v = 0; |
|
|
1409 | struct utsname buf; |
|
|
1410 | int i; |
|
|
1411 | char *p = buf.release; |
|
|
1412 | |
|
|
1413 | if (uname (&buf)) |
|
|
1414 | return 0; |
|
|
1415 | |
|
|
1416 | for (i = 3+1; --i; ) |
|
|
1417 | { |
|
|
1418 | unsigned int c = 0; |
|
|
1419 | |
|
|
1420 | for (;;) |
|
|
1421 | { |
|
|
1422 | if (*p >= '0' && *p <= '9') |
|
|
1423 | c = c * 10 + *p++ - '0'; |
|
|
1424 | else |
|
|
1425 | { |
|
|
1426 | p += *p == '.'; |
|
|
1427 | break; |
|
|
1428 | } |
|
|
1429 | } |
|
|
1430 | |
|
|
1431 | v = (v << 8) | c; |
|
|
1432 | } |
|
|
1433 | |
|
|
1434 | return v; |
|
|
1435 | #else |
|
|
1436 | return 0; |
|
|
1437 | #endif |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | /*****************************************************************************/ |
|
|
1441 | |
|
|
1442 | #if EV_AVOID_STDIO |
|
|
1443 | static void noinline ecb_cold |
|
|
1444 | ev_printerr (const char *msg) |
|
|
1445 | { |
|
|
1446 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1447 | } |
|
|
1448 | #endif |
|
|
1449 | |
|
|
1450 | static void (*syserr_cb)(const char *msg) EV_THROW; |
|
|
1451 | |
|
|
1452 | void ecb_cold |
|
|
1453 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW |
|
|
1454 | { |
|
|
1455 | syserr_cb = cb; |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | static void noinline ecb_cold |
|
|
1459 | ev_syserr (const char *msg) |
|
|
1460 | { |
|
|
1461 | if (!msg) |
|
|
1462 | msg = "(libev) system error"; |
|
|
1463 | |
|
|
1464 | if (syserr_cb) |
|
|
1465 | syserr_cb (msg); |
|
|
1466 | else |
|
|
1467 | { |
|
|
1468 | #if EV_AVOID_STDIO |
|
|
1469 | ev_printerr (msg); |
|
|
1470 | ev_printerr (": "); |
|
|
1471 | ev_printerr (strerror (errno)); |
|
|
1472 | ev_printerr ("\n"); |
|
|
1473 | #else |
|
|
1474 | perror (msg); |
|
|
1475 | #endif |
|
|
1476 | abort (); |
|
|
1477 | } |
|
|
1478 | } |
|
|
1479 | |
|
|
1480 | static void * |
|
|
1481 | ev_realloc_emul (void *ptr, long size) EV_THROW |
|
|
1482 | { |
|
|
1483 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1484 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1485 | * the single unix specification, so work around them here. |
|
|
1486 | * recently, also (at least) fedora and debian started breaking it, |
|
|
1487 | * despite documenting it otherwise. |
|
|
1488 | */ |
|
|
1489 | |
|
|
1490 | if (size) |
|
|
1491 | return realloc (ptr, size); |
|
|
1492 | |
|
|
1493 | free (ptr); |
|
|
1494 | return 0; |
|
|
1495 | } |
|
|
1496 | |
|
|
1497 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
|
|
1498 | |
|
|
1499 | void ecb_cold |
|
|
1500 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW |
|
|
1501 | { |
|
|
1502 | alloc = cb; |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | inline_speed void * |
|
|
1506 | ev_realloc (void *ptr, long size) |
|
|
1507 | { |
|
|
1508 | ptr = alloc (ptr, size); |
|
|
1509 | |
|
|
1510 | if (!ptr && size) |
|
|
1511 | { |
|
|
1512 | #if EV_AVOID_STDIO |
|
|
1513 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1514 | #else |
|
|
1515 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1516 | #endif |
|
|
1517 | abort (); |
|
|
1518 | } |
|
|
1519 | |
|
|
1520 | return ptr; |
|
|
1521 | } |
|
|
1522 | |
|
|
1523 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
1524 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
1525 | |
|
|
1526 | /*****************************************************************************/ |
|
|
1527 | |
|
|
1528 | /* set in reify when reification needed */ |
|
|
1529 | #define EV_ANFD_REIFY 1 |
|
|
1530 | |
|
|
1531 | /* file descriptor info structure */ |
|
|
1532 | typedef struct |
|
|
1533 | { |
|
|
1534 | WL head; |
|
|
1535 | unsigned char events; /* the events watched for */ |
|
|
1536 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1537 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
1538 | unsigned char unused; |
|
|
1539 | #if EV_USE_EPOLL |
|
|
1540 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1541 | #endif |
|
|
1542 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1543 | SOCKET handle; |
|
|
1544 | #endif |
|
|
1545 | #if EV_USE_IOCP |
|
|
1546 | OVERLAPPED or, ow; |
|
|
1547 | #endif |
|
|
1548 | } ANFD; |
|
|
1549 | |
|
|
1550 | /* stores the pending event set for a given watcher */ |
|
|
1551 | typedef struct |
|
|
1552 | { |
|
|
1553 | W w; |
|
|
1554 | int events; /* the pending event set for the given watcher */ |
|
|
1555 | } ANPENDING; |
|
|
1556 | |
|
|
1557 | #if EV_USE_INOTIFY |
|
|
1558 | /* hash table entry per inotify-id */ |
|
|
1559 | typedef struct |
|
|
1560 | { |
|
|
1561 | WL head; |
|
|
1562 | } ANFS; |
|
|
1563 | #endif |
|
|
1564 | |
|
|
1565 | /* Heap Entry */ |
|
|
1566 | #if EV_HEAP_CACHE_AT |
|
|
1567 | /* a heap element */ |
|
|
1568 | typedef struct { |
|
|
1569 | ev_tstamp at; |
|
|
1570 | WT w; |
|
|
1571 | } ANHE; |
|
|
1572 | |
|
|
1573 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1574 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1575 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1576 | #else |
|
|
1577 | /* a heap element */ |
|
|
1578 | typedef WT ANHE; |
|
|
1579 | |
|
|
1580 | #define ANHE_w(he) (he) |
|
|
1581 | #define ANHE_at(he) (he)->at |
|
|
1582 | #define ANHE_at_cache(he) |
|
|
1583 | #endif |
|
|
1584 | |
|
|
1585 | #if EV_MULTIPLICITY |
|
|
1586 | |
|
|
1587 | struct ev_loop |
|
|
1588 | { |
|
|
1589 | ev_tstamp ev_rt_now; |
|
|
1590 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
1591 | #define VAR(name,decl) decl; |
|
|
1592 | #include "ev_vars.h" |
|
|
1593 | #undef VAR |
|
|
1594 | }; |
|
|
1595 | #include "ev_wrap.h" |
|
|
1596 | |
|
|
1597 | static struct ev_loop default_loop_struct; |
|
|
1598 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
|
|
1599 | |
|
|
1600 | #else |
|
|
1601 | |
|
|
1602 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
|
|
1603 | #define VAR(name,decl) static decl; |
|
|
1604 | #include "ev_vars.h" |
|
|
1605 | #undef VAR |
|
|
1606 | |
|
|
1607 | static int ev_default_loop_ptr; |
|
|
1608 | |
|
|
1609 | #endif |
|
|
1610 | |
|
|
1611 | #if EV_FEATURE_API |
|
|
1612 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1613 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1614 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1615 | #else |
|
|
1616 | # define EV_RELEASE_CB (void)0 |
|
|
1617 | # define EV_ACQUIRE_CB (void)0 |
|
|
1618 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1619 | #endif |
|
|
1620 | |
|
|
1621 | #define EVBREAK_RECURSE 0x80 |
|
|
1622 | |
|
|
1623 | /*****************************************************************************/ |
|
|
1624 | |
|
|
1625 | #ifndef EV_HAVE_EV_TIME |
98 | ev_tstamp |
1626 | ev_tstamp |
99 | ev_time (void) |
1627 | ev_time (void) EV_THROW |
100 | { |
1628 | { |
101 | #if EV_USE_REALTIME |
1629 | #if EV_USE_REALTIME |
|
|
1630 | if (expect_true (have_realtime)) |
|
|
1631 | { |
102 | struct timespec ts; |
1632 | struct timespec ts; |
103 | clock_gettime (CLOCK_REALTIME, &ts); |
1633 | clock_gettime (CLOCK_REALTIME, &ts); |
104 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1634 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
105 | #else |
1635 | } |
|
|
1636 | #endif |
|
|
1637 | |
106 | struct timeval tv; |
1638 | struct timeval tv; |
107 | gettimeofday (&tv, 0); |
1639 | gettimeofday (&tv, 0); |
108 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1640 | return tv.tv_sec + tv.tv_usec * 1e-6; |
109 | #endif |
|
|
110 | } |
1641 | } |
|
|
1642 | #endif |
111 | |
1643 | |
112 | static ev_tstamp |
1644 | inline_size ev_tstamp |
113 | get_clock (void) |
1645 | get_clock (void) |
114 | { |
1646 | { |
115 | #if EV_USE_MONOTONIC |
1647 | #if EV_USE_MONOTONIC |
116 | if (have_monotonic) |
1648 | if (expect_true (have_monotonic)) |
117 | { |
1649 | { |
118 | struct timespec ts; |
1650 | struct timespec ts; |
119 | clock_gettime (CLOCK_MONOTONIC, &ts); |
1651 | clock_gettime (CLOCK_MONOTONIC, &ts); |
120 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1652 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
121 | } |
1653 | } |
122 | #endif |
1654 | #endif |
123 | |
1655 | |
124 | return ev_time (); |
1656 | return ev_time (); |
125 | } |
1657 | } |
126 | |
1658 | |
127 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
1659 | #if EV_MULTIPLICITY |
|
|
1660 | ev_tstamp |
|
|
1661 | ev_now (EV_P) EV_THROW |
|
|
1662 | { |
|
|
1663 | return ev_rt_now; |
|
|
1664 | } |
|
|
1665 | #endif |
128 | |
1666 | |
129 | #define array_needsize(base,cur,cnt,init) \ |
1667 | void |
130 | if ((cnt) > cur) \ |
1668 | ev_sleep (ev_tstamp delay) EV_THROW |
131 | { \ |
1669 | { |
132 | int newcnt = cur; \ |
1670 | if (delay > 0.) |
133 | do \ |
|
|
134 | { \ |
|
|
135 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
136 | } \ |
|
|
137 | while ((cnt) > newcnt); \ |
|
|
138 | \ |
|
|
139 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
140 | init (base + cur, newcnt - cur); \ |
|
|
141 | cur = newcnt; \ |
|
|
142 | } |
1671 | { |
|
|
1672 | #if EV_USE_NANOSLEEP |
|
|
1673 | struct timespec ts; |
|
|
1674 | |
|
|
1675 | EV_TS_SET (ts, delay); |
|
|
1676 | nanosleep (&ts, 0); |
|
|
1677 | #elif defined _WIN32 |
|
|
1678 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
1679 | #else |
|
|
1680 | struct timeval tv; |
|
|
1681 | |
|
|
1682 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
1683 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
1684 | /* by older ones */ |
|
|
1685 | EV_TV_SET (tv, delay); |
|
|
1686 | select (0, 0, 0, 0, &tv); |
|
|
1687 | #endif |
|
|
1688 | } |
|
|
1689 | } |
143 | |
1690 | |
144 | /*****************************************************************************/ |
1691 | /*****************************************************************************/ |
145 | |
1692 | |
146 | typedef struct |
1693 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
147 | { |
|
|
148 | struct ev_io *head; |
|
|
149 | unsigned char events; |
|
|
150 | unsigned char reify; |
|
|
151 | } ANFD; |
|
|
152 | |
1694 | |
153 | static ANFD *anfds; |
1695 | /* find a suitable new size for the given array, */ |
154 | static int anfdmax; |
1696 | /* hopefully by rounding to a nice-to-malloc size */ |
155 | |
1697 | inline_size int |
156 | static void |
1698 | array_nextsize (int elem, int cur, int cnt) |
157 | anfds_init (ANFD *base, int count) |
|
|
158 | { |
1699 | { |
159 | while (count--) |
1700 | int ncur = cur + 1; |
160 | { |
|
|
161 | base->head = 0; |
|
|
162 | base->events = EV_NONE; |
|
|
163 | base->reify = 0; |
|
|
164 | |
1701 | |
165 | ++base; |
1702 | do |
|
|
1703 | ncur <<= 1; |
|
|
1704 | while (cnt > ncur); |
|
|
1705 | |
|
|
1706 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
|
|
1707 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
166 | } |
1708 | { |
167 | } |
1709 | ncur *= elem; |
168 | |
1710 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
169 | typedef struct |
1711 | ncur = ncur - sizeof (void *) * 4; |
170 | { |
1712 | ncur /= elem; |
171 | W w; |
|
|
172 | int events; |
|
|
173 | } ANPENDING; |
|
|
174 | |
|
|
175 | static ANPENDING *pendings; |
|
|
176 | static int pendingmax, pendingcnt; |
|
|
177 | |
|
|
178 | static void |
|
|
179 | event (W w, int events) |
|
|
180 | { |
|
|
181 | if (w->pending) |
|
|
182 | { |
1713 | } |
|
|
1714 | |
|
|
1715 | return ncur; |
|
|
1716 | } |
|
|
1717 | |
|
|
1718 | static void * noinline ecb_cold |
|
|
1719 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
1720 | { |
|
|
1721 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
1722 | return ev_realloc (base, elem * *cur); |
|
|
1723 | } |
|
|
1724 | |
|
|
1725 | #define array_init_zero(base,count) \ |
|
|
1726 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
1727 | |
|
|
1728 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
1729 | if (expect_false ((cnt) > (cur))) \ |
|
|
1730 | { \ |
|
|
1731 | int ecb_unused ocur_ = (cur); \ |
|
|
1732 | (base) = (type *)array_realloc \ |
|
|
1733 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
1734 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
1735 | } |
|
|
1736 | |
|
|
1737 | #if 0 |
|
|
1738 | #define array_slim(type,stem) \ |
|
|
1739 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
1740 | { \ |
|
|
1741 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
1742 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
1743 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
1744 | } |
|
|
1745 | #endif |
|
|
1746 | |
|
|
1747 | #define array_free(stem, idx) \ |
|
|
1748 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
1749 | |
|
|
1750 | /*****************************************************************************/ |
|
|
1751 | |
|
|
1752 | /* dummy callback for pending events */ |
|
|
1753 | static void noinline |
|
|
1754 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
1755 | { |
|
|
1756 | } |
|
|
1757 | |
|
|
1758 | void noinline |
|
|
1759 | ev_feed_event (EV_P_ void *w, int revents) EV_THROW |
|
|
1760 | { |
|
|
1761 | W w_ = (W)w; |
|
|
1762 | int pri = ABSPRI (w_); |
|
|
1763 | |
|
|
1764 | if (expect_false (w_->pending)) |
|
|
1765 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
1766 | else |
|
|
1767 | { |
|
|
1768 | w_->pending = ++pendingcnt [pri]; |
|
|
1769 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
1770 | pendings [pri][w_->pending - 1].w = w_; |
183 | pendings [w->pending - 1].events |= events; |
1771 | pendings [pri][w_->pending - 1].events = revents; |
184 | return; |
|
|
185 | } |
1772 | } |
186 | |
1773 | |
187 | w->pending = ++pendingcnt; |
1774 | pendingpri = NUMPRI - 1; |
188 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
189 | pendings [pendingcnt - 1].w = w; |
|
|
190 | pendings [pendingcnt - 1].events = events; |
|
|
191 | } |
1775 | } |
192 | |
1776 | |
193 | static void |
1777 | inline_speed void |
|
|
1778 | feed_reverse (EV_P_ W w) |
|
|
1779 | { |
|
|
1780 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
1781 | rfeeds [rfeedcnt++] = w; |
|
|
1782 | } |
|
|
1783 | |
|
|
1784 | inline_size void |
|
|
1785 | feed_reverse_done (EV_P_ int revents) |
|
|
1786 | { |
|
|
1787 | do |
|
|
1788 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
1789 | while (rfeedcnt); |
|
|
1790 | } |
|
|
1791 | |
|
|
1792 | inline_speed void |
194 | queue_events (W *events, int eventcnt, int type) |
1793 | queue_events (EV_P_ W *events, int eventcnt, int type) |
195 | { |
1794 | { |
196 | int i; |
1795 | int i; |
197 | |
1796 | |
198 | for (i = 0; i < eventcnt; ++i) |
1797 | for (i = 0; i < eventcnt; ++i) |
199 | event (events [i], type); |
1798 | ev_feed_event (EV_A_ events [i], type); |
200 | } |
1799 | } |
201 | |
1800 | |
202 | static void |
1801 | /*****************************************************************************/ |
|
|
1802 | |
|
|
1803 | inline_speed void |
203 | fd_event (int fd, int events) |
1804 | fd_event_nocheck (EV_P_ int fd, int revents) |
204 | { |
1805 | { |
205 | ANFD *anfd = anfds + fd; |
1806 | ANFD *anfd = anfds + fd; |
206 | struct ev_io *w; |
1807 | ev_io *w; |
207 | |
1808 | |
208 | for (w = anfd->head; w; w = w->next) |
1809 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
209 | { |
1810 | { |
210 | int ev = w->events & events; |
1811 | int ev = w->events & revents; |
211 | |
1812 | |
212 | if (ev) |
1813 | if (ev) |
213 | event ((W)w, ev); |
1814 | ev_feed_event (EV_A_ (W)w, ev); |
214 | } |
1815 | } |
215 | } |
1816 | } |
216 | |
1817 | |
217 | /*****************************************************************************/ |
1818 | /* do not submit kernel events for fds that have reify set */ |
|
|
1819 | /* because that means they changed while we were polling for new events */ |
|
|
1820 | inline_speed void |
|
|
1821 | fd_event (EV_P_ int fd, int revents) |
|
|
1822 | { |
|
|
1823 | ANFD *anfd = anfds + fd; |
218 | |
1824 | |
219 | static int *fdchanges; |
1825 | if (expect_true (!anfd->reify)) |
220 | static int fdchangemax, fdchangecnt; |
1826 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1827 | } |
221 | |
1828 | |
222 | static void |
1829 | void |
223 | fd_reify (void) |
1830 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW |
|
|
1831 | { |
|
|
1832 | if (fd >= 0 && fd < anfdmax) |
|
|
1833 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1834 | } |
|
|
1835 | |
|
|
1836 | /* make sure the external fd watch events are in-sync */ |
|
|
1837 | /* with the kernel/libev internal state */ |
|
|
1838 | inline_size void |
|
|
1839 | fd_reify (EV_P) |
224 | { |
1840 | { |
225 | int i; |
1841 | int i; |
226 | |
1842 | |
|
|
1843 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
227 | for (i = 0; i < fdchangecnt; ++i) |
1844 | for (i = 0; i < fdchangecnt; ++i) |
228 | { |
1845 | { |
229 | int fd = fdchanges [i]; |
1846 | int fd = fdchanges [i]; |
230 | ANFD *anfd = anfds + fd; |
1847 | ANFD *anfd = anfds + fd; |
231 | struct ev_io *w; |
|
|
232 | |
1848 | |
233 | int events = 0; |
1849 | if (anfd->reify & EV__IOFDSET && anfd->head) |
234 | |
|
|
235 | for (w = anfd->head; w; w = w->next) |
|
|
236 | events |= w->events; |
|
|
237 | |
|
|
238 | anfd->reify = 0; |
|
|
239 | |
|
|
240 | if (anfd->events != events) |
|
|
241 | { |
1850 | { |
|
|
1851 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1852 | |
|
|
1853 | if (handle != anfd->handle) |
|
|
1854 | { |
|
|
1855 | unsigned long arg; |
|
|
1856 | |
|
|
1857 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1858 | |
|
|
1859 | /* handle changed, but fd didn't - we need to do it in two steps */ |
242 | method_modify (fd, anfd->events, events); |
1860 | backend_modify (EV_A_ fd, anfd->events, 0); |
243 | anfd->events = events; |
1861 | anfd->events = 0; |
|
|
1862 | anfd->handle = handle; |
|
|
1863 | } |
244 | } |
1864 | } |
245 | } |
1865 | } |
|
|
1866 | #endif |
|
|
1867 | |
|
|
1868 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1869 | { |
|
|
1870 | int fd = fdchanges [i]; |
|
|
1871 | ANFD *anfd = anfds + fd; |
|
|
1872 | ev_io *w; |
|
|
1873 | |
|
|
1874 | unsigned char o_events = anfd->events; |
|
|
1875 | unsigned char o_reify = anfd->reify; |
|
|
1876 | |
|
|
1877 | anfd->reify = 0; |
|
|
1878 | |
|
|
1879 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
1880 | { |
|
|
1881 | anfd->events = 0; |
|
|
1882 | |
|
|
1883 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1884 | anfd->events |= (unsigned char)w->events; |
|
|
1885 | |
|
|
1886 | if (o_events != anfd->events) |
|
|
1887 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
1888 | } |
|
|
1889 | |
|
|
1890 | if (o_reify & EV__IOFDSET) |
|
|
1891 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
1892 | } |
246 | |
1893 | |
247 | fdchangecnt = 0; |
1894 | fdchangecnt = 0; |
248 | } |
1895 | } |
249 | |
1896 | |
250 | static void |
1897 | /* something about the given fd changed */ |
251 | fd_change (int fd) |
1898 | inline_size void |
|
|
1899 | fd_change (EV_P_ int fd, int flags) |
252 | { |
1900 | { |
253 | if (anfds [fd].reify || fdchangecnt < 0) |
1901 | unsigned char reify = anfds [fd].reify; |
254 | return; |
|
|
255 | |
|
|
256 | anfds [fd].reify = 1; |
1902 | anfds [fd].reify |= flags; |
257 | |
1903 | |
|
|
1904 | if (expect_true (!reify)) |
|
|
1905 | { |
258 | ++fdchangecnt; |
1906 | ++fdchangecnt; |
259 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1907 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
260 | fdchanges [fdchangecnt - 1] = fd; |
1908 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1909 | } |
|
|
1910 | } |
|
|
1911 | |
|
|
1912 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1913 | inline_speed void ecb_cold |
|
|
1914 | fd_kill (EV_P_ int fd) |
|
|
1915 | { |
|
|
1916 | ev_io *w; |
|
|
1917 | |
|
|
1918 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
1919 | { |
|
|
1920 | ev_io_stop (EV_A_ w); |
|
|
1921 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
1922 | } |
|
|
1923 | } |
|
|
1924 | |
|
|
1925 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1926 | inline_size int ecb_cold |
|
|
1927 | fd_valid (int fd) |
|
|
1928 | { |
|
|
1929 | #ifdef _WIN32 |
|
|
1930 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
1931 | #else |
|
|
1932 | return fcntl (fd, F_GETFD) != -1; |
|
|
1933 | #endif |
261 | } |
1934 | } |
262 | |
1935 | |
263 | /* called on EBADF to verify fds */ |
1936 | /* called on EBADF to verify fds */ |
264 | static void |
1937 | static void noinline ecb_cold |
265 | fd_recheck (void) |
1938 | fd_ebadf (EV_P) |
266 | { |
1939 | { |
267 | int fd; |
1940 | int fd; |
268 | |
1941 | |
269 | for (fd = 0; fd < anfdmax; ++fd) |
1942 | for (fd = 0; fd < anfdmax; ++fd) |
270 | if (anfds [fd].events) |
1943 | if (anfds [fd].events) |
271 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
1944 | if (!fd_valid (fd) && errno == EBADF) |
272 | while (anfds [fd].head) |
1945 | fd_kill (EV_A_ fd); |
|
|
1946 | } |
|
|
1947 | |
|
|
1948 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
1949 | static void noinline ecb_cold |
|
|
1950 | fd_enomem (EV_P) |
|
|
1951 | { |
|
|
1952 | int fd; |
|
|
1953 | |
|
|
1954 | for (fd = anfdmax; fd--; ) |
|
|
1955 | if (anfds [fd].events) |
|
|
1956 | { |
|
|
1957 | fd_kill (EV_A_ fd); |
|
|
1958 | break; |
|
|
1959 | } |
|
|
1960 | } |
|
|
1961 | |
|
|
1962 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
1963 | static void noinline |
|
|
1964 | fd_rearm_all (EV_P) |
|
|
1965 | { |
|
|
1966 | int fd; |
|
|
1967 | |
|
|
1968 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
1969 | if (anfds [fd].events) |
|
|
1970 | { |
|
|
1971 | anfds [fd].events = 0; |
|
|
1972 | anfds [fd].emask = 0; |
|
|
1973 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
1974 | } |
|
|
1975 | } |
|
|
1976 | |
|
|
1977 | /* used to prepare libev internal fd's */ |
|
|
1978 | /* this is not fork-safe */ |
|
|
1979 | inline_speed void |
|
|
1980 | fd_intern (int fd) |
|
|
1981 | { |
|
|
1982 | #ifdef _WIN32 |
|
|
1983 | unsigned long arg = 1; |
|
|
1984 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1985 | #else |
|
|
1986 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1987 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1988 | #endif |
|
|
1989 | } |
|
|
1990 | |
|
|
1991 | /*****************************************************************************/ |
|
|
1992 | |
|
|
1993 | /* |
|
|
1994 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1995 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1996 | * the branching factor of the d-tree. |
|
|
1997 | */ |
|
|
1998 | |
|
|
1999 | /* |
|
|
2000 | * at the moment we allow libev the luxury of two heaps, |
|
|
2001 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
2002 | * which is more cache-efficient. |
|
|
2003 | * the difference is about 5% with 50000+ watchers. |
|
|
2004 | */ |
|
|
2005 | #if EV_USE_4HEAP |
|
|
2006 | |
|
|
2007 | #define DHEAP 4 |
|
|
2008 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
2009 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
2010 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
2011 | |
|
|
2012 | /* away from the root */ |
|
|
2013 | inline_speed void |
|
|
2014 | downheap (ANHE *heap, int N, int k) |
|
|
2015 | { |
|
|
2016 | ANHE he = heap [k]; |
|
|
2017 | ANHE *E = heap + N + HEAP0; |
|
|
2018 | |
|
|
2019 | for (;;) |
|
|
2020 | { |
|
|
2021 | ev_tstamp minat; |
|
|
2022 | ANHE *minpos; |
|
|
2023 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
2024 | |
|
|
2025 | /* find minimum child */ |
|
|
2026 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
2027 | { |
|
|
2028 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2029 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2030 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2031 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2032 | } |
|
|
2033 | else if (pos < E) |
|
|
2034 | { |
|
|
2035 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
2036 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
2037 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
2038 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
2039 | } |
|
|
2040 | else |
|
|
2041 | break; |
|
|
2042 | |
|
|
2043 | if (ANHE_at (he) <= minat) |
|
|
2044 | break; |
|
|
2045 | |
|
|
2046 | heap [k] = *minpos; |
|
|
2047 | ev_active (ANHE_w (*minpos)) = k; |
|
|
2048 | |
|
|
2049 | k = minpos - heap; |
|
|
2050 | } |
|
|
2051 | |
|
|
2052 | heap [k] = he; |
|
|
2053 | ev_active (ANHE_w (he)) = k; |
|
|
2054 | } |
|
|
2055 | |
|
|
2056 | #else /* 4HEAP */ |
|
|
2057 | |
|
|
2058 | #define HEAP0 1 |
|
|
2059 | #define HPARENT(k) ((k) >> 1) |
|
|
2060 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
2061 | |
|
|
2062 | /* away from the root */ |
|
|
2063 | inline_speed void |
|
|
2064 | downheap (ANHE *heap, int N, int k) |
|
|
2065 | { |
|
|
2066 | ANHE he = heap [k]; |
|
|
2067 | |
|
|
2068 | for (;;) |
|
|
2069 | { |
|
|
2070 | int c = k << 1; |
|
|
2071 | |
|
|
2072 | if (c >= N + HEAP0) |
|
|
2073 | break; |
|
|
2074 | |
|
|
2075 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
2076 | ? 1 : 0; |
|
|
2077 | |
|
|
2078 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
2079 | break; |
|
|
2080 | |
|
|
2081 | heap [k] = heap [c]; |
|
|
2082 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2083 | |
|
|
2084 | k = c; |
|
|
2085 | } |
|
|
2086 | |
|
|
2087 | heap [k] = he; |
|
|
2088 | ev_active (ANHE_w (he)) = k; |
|
|
2089 | } |
|
|
2090 | #endif |
|
|
2091 | |
|
|
2092 | /* towards the root */ |
|
|
2093 | inline_speed void |
|
|
2094 | upheap (ANHE *heap, int k) |
|
|
2095 | { |
|
|
2096 | ANHE he = heap [k]; |
|
|
2097 | |
|
|
2098 | for (;;) |
|
|
2099 | { |
|
|
2100 | int p = HPARENT (k); |
|
|
2101 | |
|
|
2102 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
2103 | break; |
|
|
2104 | |
|
|
2105 | heap [k] = heap [p]; |
|
|
2106 | ev_active (ANHE_w (heap [k])) = k; |
|
|
2107 | k = p; |
|
|
2108 | } |
|
|
2109 | |
|
|
2110 | heap [k] = he; |
|
|
2111 | ev_active (ANHE_w (he)) = k; |
|
|
2112 | } |
|
|
2113 | |
|
|
2114 | /* move an element suitably so it is in a correct place */ |
|
|
2115 | inline_size void |
|
|
2116 | adjustheap (ANHE *heap, int N, int k) |
|
|
2117 | { |
|
|
2118 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
2119 | upheap (heap, k); |
|
|
2120 | else |
|
|
2121 | downheap (heap, N, k); |
|
|
2122 | } |
|
|
2123 | |
|
|
2124 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
2125 | inline_size void |
|
|
2126 | reheap (ANHE *heap, int N) |
|
|
2127 | { |
|
|
2128 | int i; |
|
|
2129 | |
|
|
2130 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
2131 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
2132 | for (i = 0; i < N; ++i) |
|
|
2133 | upheap (heap, i + HEAP0); |
|
|
2134 | } |
|
|
2135 | |
|
|
2136 | /*****************************************************************************/ |
|
|
2137 | |
|
|
2138 | /* associate signal watchers to a signal signal */ |
|
|
2139 | typedef struct |
|
|
2140 | { |
|
|
2141 | EV_ATOMIC_T pending; |
|
|
2142 | #if EV_MULTIPLICITY |
|
|
2143 | EV_P; |
|
|
2144 | #endif |
|
|
2145 | WL head; |
|
|
2146 | } ANSIG; |
|
|
2147 | |
|
|
2148 | static ANSIG signals [EV_NSIG - 1]; |
|
|
2149 | |
|
|
2150 | /*****************************************************************************/ |
|
|
2151 | |
|
|
2152 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2153 | |
|
|
2154 | static void noinline ecb_cold |
|
|
2155 | evpipe_init (EV_P) |
|
|
2156 | { |
|
|
2157 | if (!ev_is_active (&pipe_w)) |
|
|
2158 | { |
|
|
2159 | int fds [2]; |
|
|
2160 | |
|
|
2161 | # if EV_USE_EVENTFD |
|
|
2162 | fds [0] = -1; |
|
|
2163 | fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
2164 | if (fds [1] < 0 && errno == EINVAL) |
|
|
2165 | fds [1] = eventfd (0, 0); |
|
|
2166 | |
|
|
2167 | if (fds [1] < 0) |
|
|
2168 | # endif |
|
|
2169 | { |
|
|
2170 | while (pipe (fds)) |
|
|
2171 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
2172 | |
|
|
2173 | fd_intern (fds [0]); |
|
|
2174 | } |
|
|
2175 | |
|
|
2176 | evpipe [0] = fds [0]; |
|
|
2177 | |
|
|
2178 | if (evpipe [1] < 0) |
|
|
2179 | evpipe [1] = fds [1]; /* first call, set write fd */ |
|
|
2180 | else |
|
|
2181 | { |
|
|
2182 | /* on subsequent calls, do not change evpipe [1] */ |
|
|
2183 | /* so that evpipe_write can always rely on its value. */ |
|
|
2184 | /* this branch does not do anything sensible on windows, */ |
|
|
2185 | /* so must not be executed on windows */ |
|
|
2186 | |
|
|
2187 | dup2 (fds [1], evpipe [1]); |
|
|
2188 | close (fds [1]); |
|
|
2189 | } |
|
|
2190 | |
|
|
2191 | fd_intern (evpipe [1]); |
|
|
2192 | |
|
|
2193 | ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ); |
|
|
2194 | ev_io_start (EV_A_ &pipe_w); |
|
|
2195 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
2196 | } |
|
|
2197 | } |
|
|
2198 | |
|
|
2199 | inline_speed void |
|
|
2200 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
2201 | { |
|
|
2202 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
2203 | |
|
|
2204 | if (expect_true (*flag)) |
|
|
2205 | return; |
|
|
2206 | |
|
|
2207 | *flag = 1; |
|
|
2208 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
2209 | |
|
|
2210 | pipe_write_skipped = 1; |
|
|
2211 | |
|
|
2212 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
2213 | |
|
|
2214 | if (pipe_write_wanted) |
|
|
2215 | { |
|
|
2216 | int old_errno; |
|
|
2217 | |
|
|
2218 | pipe_write_skipped = 0; |
|
|
2219 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2220 | |
|
|
2221 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
2222 | |
|
|
2223 | #if EV_USE_EVENTFD |
|
|
2224 | if (evpipe [0] < 0) |
|
|
2225 | { |
|
|
2226 | uint64_t counter = 1; |
|
|
2227 | write (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2228 | } |
|
|
2229 | else |
|
|
2230 | #endif |
|
|
2231 | { |
|
|
2232 | #ifdef _WIN32 |
|
|
2233 | WSABUF buf; |
|
|
2234 | DWORD sent; |
|
|
2235 | buf.buf = &buf; |
|
|
2236 | buf.len = 1; |
|
|
2237 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
2238 | #else |
|
|
2239 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
2240 | #endif |
|
|
2241 | } |
|
|
2242 | |
|
|
2243 | errno = old_errno; |
|
|
2244 | } |
|
|
2245 | } |
|
|
2246 | |
|
|
2247 | /* called whenever the libev signal pipe */ |
|
|
2248 | /* got some events (signal, async) */ |
|
|
2249 | static void |
|
|
2250 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
2251 | { |
|
|
2252 | int i; |
|
|
2253 | |
|
|
2254 | if (revents & EV_READ) |
|
|
2255 | { |
|
|
2256 | #if EV_USE_EVENTFD |
|
|
2257 | if (evpipe [0] < 0) |
|
|
2258 | { |
|
|
2259 | uint64_t counter; |
|
|
2260 | read (evpipe [1], &counter, sizeof (uint64_t)); |
|
|
2261 | } |
|
|
2262 | else |
|
|
2263 | #endif |
|
|
2264 | { |
|
|
2265 | char dummy[4]; |
|
|
2266 | #ifdef _WIN32 |
|
|
2267 | WSABUF buf; |
|
|
2268 | DWORD recvd; |
|
|
2269 | DWORD flags = 0; |
|
|
2270 | buf.buf = dummy; |
|
|
2271 | buf.len = sizeof (dummy); |
|
|
2272 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
2273 | #else |
|
|
2274 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
2275 | #endif |
|
|
2276 | } |
|
|
2277 | } |
|
|
2278 | |
|
|
2279 | pipe_write_skipped = 0; |
|
|
2280 | |
|
|
2281 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
2282 | |
|
|
2283 | #if EV_SIGNAL_ENABLE |
|
|
2284 | if (sig_pending) |
|
|
2285 | { |
|
|
2286 | sig_pending = 0; |
|
|
2287 | |
|
|
2288 | ECB_MEMORY_FENCE; |
|
|
2289 | |
|
|
2290 | for (i = EV_NSIG - 1; i--; ) |
|
|
2291 | if (expect_false (signals [i].pending)) |
|
|
2292 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
2293 | } |
|
|
2294 | #endif |
|
|
2295 | |
|
|
2296 | #if EV_ASYNC_ENABLE |
|
|
2297 | if (async_pending) |
|
|
2298 | { |
|
|
2299 | async_pending = 0; |
|
|
2300 | |
|
|
2301 | ECB_MEMORY_FENCE; |
|
|
2302 | |
|
|
2303 | for (i = asynccnt; i--; ) |
|
|
2304 | if (asyncs [i]->sent) |
273 | { |
2305 | { |
274 | ev_io_stop (anfds [fd].head); |
2306 | asyncs [i]->sent = 0; |
275 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
2307 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2308 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
276 | } |
2309 | } |
|
|
2310 | } |
|
|
2311 | #endif |
277 | } |
2312 | } |
278 | |
2313 | |
279 | /*****************************************************************************/ |
2314 | /*****************************************************************************/ |
280 | |
2315 | |
281 | static struct ev_timer **timers; |
2316 | void |
282 | static int timermax, timercnt; |
2317 | ev_feed_signal (int signum) EV_THROW |
|
|
2318 | { |
|
|
2319 | #if EV_MULTIPLICITY |
|
|
2320 | EV_P; |
|
|
2321 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
2322 | EV_A = signals [signum - 1].loop; |
283 | |
2323 | |
284 | static struct ev_periodic **periodics; |
2324 | if (!EV_A) |
285 | static int periodicmax, periodiccnt; |
2325 | return; |
|
|
2326 | #endif |
|
|
2327 | |
|
|
2328 | signals [signum - 1].pending = 1; |
|
|
2329 | evpipe_write (EV_A_ &sig_pending); |
|
|
2330 | } |
286 | |
2331 | |
287 | static void |
2332 | static void |
288 | upheap (WT *timers, int k) |
2333 | ev_sighandler (int signum) |
289 | { |
2334 | { |
290 | WT w = timers [k]; |
2335 | #ifdef _WIN32 |
|
|
2336 | signal (signum, ev_sighandler); |
|
|
2337 | #endif |
291 | |
2338 | |
292 | while (k && timers [k >> 1]->at > w->at) |
2339 | ev_feed_signal (signum); |
293 | { |
|
|
294 | timers [k] = timers [k >> 1]; |
|
|
295 | timers [k]->active = k + 1; |
|
|
296 | k >>= 1; |
|
|
297 | } |
|
|
298 | |
|
|
299 | timers [k] = w; |
|
|
300 | timers [k]->active = k + 1; |
|
|
301 | |
|
|
302 | } |
2340 | } |
303 | |
2341 | |
|
|
2342 | void noinline |
|
|
2343 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
|
|
2344 | { |
|
|
2345 | WL w; |
|
|
2346 | |
|
|
2347 | if (expect_false (signum <= 0 || signum >= EV_NSIG)) |
|
|
2348 | return; |
|
|
2349 | |
|
|
2350 | --signum; |
|
|
2351 | |
|
|
2352 | #if EV_MULTIPLICITY |
|
|
2353 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
2354 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
2355 | |
|
|
2356 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
2357 | return; |
|
|
2358 | #endif |
|
|
2359 | |
|
|
2360 | signals [signum].pending = 0; |
|
|
2361 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2362 | |
|
|
2363 | for (w = signals [signum].head; w; w = w->next) |
|
|
2364 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
2365 | } |
|
|
2366 | |
|
|
2367 | #if EV_USE_SIGNALFD |
304 | static void |
2368 | static void |
305 | downheap (WT *timers, int N, int k) |
2369 | sigfdcb (EV_P_ ev_io *iow, int revents) |
306 | { |
2370 | { |
307 | WT w = timers [k]; |
2371 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
308 | |
2372 | |
309 | while (k < (N >> 1)) |
2373 | for (;;) |
310 | { |
2374 | { |
311 | int j = k << 1; |
2375 | ssize_t res = read (sigfd, si, sizeof (si)); |
312 | |
2376 | |
313 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
2377 | /* not ISO-C, as res might be -1, but works with SuS */ |
314 | ++j; |
2378 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2379 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
315 | |
2380 | |
316 | if (w->at <= timers [j]->at) |
2381 | if (res < (ssize_t)sizeof (si)) |
317 | break; |
2382 | break; |
318 | |
|
|
319 | timers [k] = timers [j]; |
|
|
320 | timers [k]->active = k + 1; |
|
|
321 | k = j; |
|
|
322 | } |
2383 | } |
323 | |
|
|
324 | timers [k] = w; |
|
|
325 | timers [k]->active = k + 1; |
|
|
326 | } |
2384 | } |
|
|
2385 | #endif |
|
|
2386 | |
|
|
2387 | #endif |
327 | |
2388 | |
328 | /*****************************************************************************/ |
2389 | /*****************************************************************************/ |
329 | |
2390 | |
330 | typedef struct |
2391 | #if EV_CHILD_ENABLE |
331 | { |
2392 | static WL childs [EV_PID_HASHSIZE]; |
332 | struct ev_signal *head; |
|
|
333 | sig_atomic_t volatile gotsig; |
|
|
334 | } ANSIG; |
|
|
335 | |
2393 | |
336 | static ANSIG *signals; |
|
|
337 | static int signalmax; |
|
|
338 | |
|
|
339 | static int sigpipe [2]; |
|
|
340 | static sig_atomic_t volatile gotsig; |
|
|
341 | static struct ev_io sigev; |
|
|
342 | |
|
|
343 | static void |
|
|
344 | signals_init (ANSIG *base, int count) |
|
|
345 | { |
|
|
346 | while (count--) |
|
|
347 | { |
|
|
348 | base->head = 0; |
|
|
349 | base->gotsig = 0; |
|
|
350 | |
|
|
351 | ++base; |
|
|
352 | } |
|
|
353 | } |
|
|
354 | |
|
|
355 | static void |
|
|
356 | sighandler (int signum) |
|
|
357 | { |
|
|
358 | signals [signum - 1].gotsig = 1; |
|
|
359 | |
|
|
360 | if (!gotsig) |
|
|
361 | { |
|
|
362 | gotsig = 1; |
|
|
363 | write (sigpipe [1], &signum, 1); |
|
|
364 | } |
|
|
365 | } |
|
|
366 | |
|
|
367 | static void |
|
|
368 | sigcb (struct ev_io *iow, int revents) |
|
|
369 | { |
|
|
370 | struct ev_signal *w; |
|
|
371 | int sig; |
|
|
372 | |
|
|
373 | read (sigpipe [0], &revents, 1); |
|
|
374 | gotsig = 0; |
|
|
375 | |
|
|
376 | for (sig = signalmax; sig--; ) |
|
|
377 | if (signals [sig].gotsig) |
|
|
378 | { |
|
|
379 | signals [sig].gotsig = 0; |
|
|
380 | |
|
|
381 | for (w = signals [sig].head; w; w = w->next) |
|
|
382 | event ((W)w, EV_SIGNAL); |
|
|
383 | } |
|
|
384 | } |
|
|
385 | |
|
|
386 | static void |
|
|
387 | siginit (void) |
|
|
388 | { |
|
|
389 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
390 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
391 | |
|
|
392 | /* rather than sort out wether we really need nb, set it */ |
|
|
393 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
394 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
395 | |
|
|
396 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
397 | ev_io_start (&sigev); |
|
|
398 | } |
|
|
399 | |
|
|
400 | /*****************************************************************************/ |
|
|
401 | |
|
|
402 | static struct ev_idle **idles; |
|
|
403 | static int idlemax, idlecnt; |
|
|
404 | |
|
|
405 | static struct ev_prepare **prepares; |
|
|
406 | static int preparemax, preparecnt; |
|
|
407 | |
|
|
408 | static struct ev_check **checks; |
|
|
409 | static int checkmax, checkcnt; |
|
|
410 | |
|
|
411 | /*****************************************************************************/ |
|
|
412 | |
|
|
413 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
414 | static struct ev_signal childev; |
2394 | static ev_signal childev; |
|
|
2395 | |
|
|
2396 | #ifndef WIFCONTINUED |
|
|
2397 | # define WIFCONTINUED(status) 0 |
|
|
2398 | #endif |
|
|
2399 | |
|
|
2400 | /* handle a single child status event */ |
|
|
2401 | inline_speed void |
|
|
2402 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
2403 | { |
|
|
2404 | ev_child *w; |
|
|
2405 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
2406 | |
|
|
2407 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2408 | { |
|
|
2409 | if ((w->pid == pid || !w->pid) |
|
|
2410 | && (!traced || (w->flags & 1))) |
|
|
2411 | { |
|
|
2412 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
2413 | w->rpid = pid; |
|
|
2414 | w->rstatus = status; |
|
|
2415 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
2416 | } |
|
|
2417 | } |
|
|
2418 | } |
415 | |
2419 | |
416 | #ifndef WCONTINUED |
2420 | #ifndef WCONTINUED |
417 | # define WCONTINUED 0 |
2421 | # define WCONTINUED 0 |
418 | #endif |
2422 | #endif |
419 | |
2423 | |
|
|
2424 | /* called on sigchld etc., calls waitpid */ |
420 | static void |
2425 | static void |
421 | childcb (struct ev_signal *sw, int revents) |
2426 | childcb (EV_P_ ev_signal *sw, int revents) |
422 | { |
2427 | { |
423 | struct ev_child *w; |
|
|
424 | int pid, status; |
2428 | int pid, status; |
425 | |
2429 | |
|
|
2430 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
426 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
2431 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
427 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
2432 | if (!WCONTINUED |
428 | if (w->pid == pid || w->pid == -1) |
2433 | || errno != EINVAL |
429 | { |
2434 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
430 | w->status = status; |
2435 | return; |
431 | event ((W)w, EV_CHILD); |
2436 | |
432 | } |
2437 | /* make sure we are called again until all children have been reaped */ |
|
|
2438 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
2439 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
2440 | |
|
|
2441 | child_reap (EV_A_ pid, pid, status); |
|
|
2442 | if ((EV_PID_HASHSIZE) > 1) |
|
|
2443 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
433 | } |
2444 | } |
|
|
2445 | |
|
|
2446 | #endif |
434 | |
2447 | |
435 | /*****************************************************************************/ |
2448 | /*****************************************************************************/ |
436 | |
2449 | |
|
|
2450 | #if EV_USE_IOCP |
|
|
2451 | # include "ev_iocp.c" |
|
|
2452 | #endif |
|
|
2453 | #if EV_USE_PORT |
|
|
2454 | # include "ev_port.c" |
|
|
2455 | #endif |
|
|
2456 | #if EV_USE_KQUEUE |
|
|
2457 | # include "ev_kqueue.c" |
|
|
2458 | #endif |
437 | #if EV_USE_EPOLL |
2459 | #if EV_USE_EPOLL |
438 | # include "ev_epoll.c" |
2460 | # include "ev_epoll.c" |
439 | #endif |
2461 | #endif |
|
|
2462 | #if EV_USE_POLL |
|
|
2463 | # include "ev_poll.c" |
|
|
2464 | #endif |
440 | #if EV_USE_SELECT |
2465 | #if EV_USE_SELECT |
441 | # include "ev_select.c" |
2466 | # include "ev_select.c" |
442 | #endif |
2467 | #endif |
443 | |
2468 | |
|
|
2469 | int ecb_cold |
|
|
2470 | ev_version_major (void) EV_THROW |
|
|
2471 | { |
|
|
2472 | return EV_VERSION_MAJOR; |
|
|
2473 | } |
|
|
2474 | |
|
|
2475 | int ecb_cold |
|
|
2476 | ev_version_minor (void) EV_THROW |
|
|
2477 | { |
|
|
2478 | return EV_VERSION_MINOR; |
|
|
2479 | } |
|
|
2480 | |
|
|
2481 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
2482 | int inline_size ecb_cold |
|
|
2483 | enable_secure (void) |
|
|
2484 | { |
|
|
2485 | #ifdef _WIN32 |
|
|
2486 | return 0; |
|
|
2487 | #else |
|
|
2488 | return getuid () != geteuid () |
|
|
2489 | || getgid () != getegid (); |
|
|
2490 | #endif |
|
|
2491 | } |
|
|
2492 | |
|
|
2493 | unsigned int ecb_cold |
|
|
2494 | ev_supported_backends (void) EV_THROW |
|
|
2495 | { |
|
|
2496 | unsigned int flags = 0; |
|
|
2497 | |
|
|
2498 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
2499 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
2500 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2501 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
2502 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
2503 | |
|
|
2504 | return flags; |
|
|
2505 | } |
|
|
2506 | |
|
|
2507 | unsigned int ecb_cold |
|
|
2508 | ev_recommended_backends (void) EV_THROW |
|
|
2509 | { |
|
|
2510 | unsigned int flags = ev_supported_backends (); |
|
|
2511 | |
|
|
2512 | #ifndef __NetBSD__ |
|
|
2513 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
2514 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
2515 | flags &= ~EVBACKEND_KQUEUE; |
|
|
2516 | #endif |
|
|
2517 | #ifdef __APPLE__ |
|
|
2518 | /* only select works correctly on that "unix-certified" platform */ |
|
|
2519 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2520 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2521 | #endif |
|
|
2522 | #ifdef __FreeBSD__ |
|
|
2523 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2524 | #endif |
|
|
2525 | |
|
|
2526 | return flags; |
|
|
2527 | } |
|
|
2528 | |
|
|
2529 | unsigned int ecb_cold |
|
|
2530 | ev_embeddable_backends (void) EV_THROW |
|
|
2531 | { |
|
|
2532 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
2533 | |
|
|
2534 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
2535 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
2536 | flags &= ~EVBACKEND_EPOLL; |
|
|
2537 | |
|
|
2538 | return flags; |
|
|
2539 | } |
|
|
2540 | |
|
|
2541 | unsigned int |
|
|
2542 | ev_backend (EV_P) EV_THROW |
|
|
2543 | { |
|
|
2544 | return backend; |
|
|
2545 | } |
|
|
2546 | |
|
|
2547 | #if EV_FEATURE_API |
|
|
2548 | unsigned int |
|
|
2549 | ev_iteration (EV_P) EV_THROW |
|
|
2550 | { |
|
|
2551 | return loop_count; |
|
|
2552 | } |
|
|
2553 | |
|
|
2554 | unsigned int |
|
|
2555 | ev_depth (EV_P) EV_THROW |
|
|
2556 | { |
|
|
2557 | return loop_depth; |
|
|
2558 | } |
|
|
2559 | |
|
|
2560 | void |
|
|
2561 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2562 | { |
|
|
2563 | io_blocktime = interval; |
|
|
2564 | } |
|
|
2565 | |
|
|
2566 | void |
|
|
2567 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2568 | { |
|
|
2569 | timeout_blocktime = interval; |
|
|
2570 | } |
|
|
2571 | |
|
|
2572 | void |
|
|
2573 | ev_set_userdata (EV_P_ void *data) EV_THROW |
|
|
2574 | { |
|
|
2575 | userdata = data; |
|
|
2576 | } |
|
|
2577 | |
|
|
2578 | void * |
|
|
2579 | ev_userdata (EV_P) EV_THROW |
|
|
2580 | { |
|
|
2581 | return userdata; |
|
|
2582 | } |
|
|
2583 | |
|
|
2584 | void |
|
|
2585 | ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW |
|
|
2586 | { |
|
|
2587 | invoke_cb = invoke_pending_cb; |
|
|
2588 | } |
|
|
2589 | |
|
|
2590 | void |
|
|
2591 | ev_set_loop_release_cb (EV_P_ ev_loop_callback_nothrow release, ev_loop_callback_nothrow acquire) EV_THROW |
|
|
2592 | { |
|
|
2593 | release_cb = release; |
|
|
2594 | acquire_cb = acquire; |
|
|
2595 | } |
|
|
2596 | #endif |
|
|
2597 | |
|
|
2598 | /* initialise a loop structure, must be zero-initialised */ |
|
|
2599 | static void noinline ecb_cold |
|
|
2600 | loop_init (EV_P_ unsigned int flags) EV_THROW |
|
|
2601 | { |
|
|
2602 | if (!backend) |
|
|
2603 | { |
|
|
2604 | origflags = flags; |
|
|
2605 | |
|
|
2606 | #if EV_USE_REALTIME |
|
|
2607 | if (!have_realtime) |
|
|
2608 | { |
|
|
2609 | struct timespec ts; |
|
|
2610 | |
|
|
2611 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2612 | have_realtime = 1; |
|
|
2613 | } |
|
|
2614 | #endif |
|
|
2615 | |
|
|
2616 | #if EV_USE_MONOTONIC |
|
|
2617 | if (!have_monotonic) |
|
|
2618 | { |
|
|
2619 | struct timespec ts; |
|
|
2620 | |
|
|
2621 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
2622 | have_monotonic = 1; |
|
|
2623 | } |
|
|
2624 | #endif |
|
|
2625 | |
|
|
2626 | /* pid check not overridable via env */ |
|
|
2627 | #ifndef _WIN32 |
|
|
2628 | if (flags & EVFLAG_FORKCHECK) |
|
|
2629 | curpid = getpid (); |
|
|
2630 | #endif |
|
|
2631 | |
|
|
2632 | if (!(flags & EVFLAG_NOENV) |
|
|
2633 | && !enable_secure () |
|
|
2634 | && getenv ("LIBEV_FLAGS")) |
|
|
2635 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
2636 | |
|
|
2637 | ev_rt_now = ev_time (); |
|
|
2638 | mn_now = get_clock (); |
|
|
2639 | now_floor = mn_now; |
|
|
2640 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2641 | #if EV_FEATURE_API |
|
|
2642 | invoke_cb = ev_invoke_pending; |
|
|
2643 | #endif |
|
|
2644 | |
|
|
2645 | io_blocktime = 0.; |
|
|
2646 | timeout_blocktime = 0.; |
|
|
2647 | backend = 0; |
|
|
2648 | backend_fd = -1; |
|
|
2649 | sig_pending = 0; |
|
|
2650 | #if EV_ASYNC_ENABLE |
|
|
2651 | async_pending = 0; |
|
|
2652 | #endif |
|
|
2653 | pipe_write_skipped = 0; |
|
|
2654 | pipe_write_wanted = 0; |
|
|
2655 | evpipe [0] = -1; |
|
|
2656 | evpipe [1] = -1; |
|
|
2657 | #if EV_USE_INOTIFY |
|
|
2658 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2659 | #endif |
|
|
2660 | #if EV_USE_SIGNALFD |
|
|
2661 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2662 | #endif |
|
|
2663 | |
|
|
2664 | if (!(flags & EVBACKEND_MASK)) |
|
|
2665 | flags |= ev_recommended_backends (); |
|
|
2666 | |
|
|
2667 | #if EV_USE_IOCP |
|
|
2668 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2669 | #endif |
|
|
2670 | #if EV_USE_PORT |
|
|
2671 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
2672 | #endif |
|
|
2673 | #if EV_USE_KQUEUE |
|
|
2674 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
2675 | #endif |
|
|
2676 | #if EV_USE_EPOLL |
|
|
2677 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
2678 | #endif |
|
|
2679 | #if EV_USE_POLL |
|
|
2680 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
2681 | #endif |
|
|
2682 | #if EV_USE_SELECT |
|
|
2683 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
2684 | #endif |
|
|
2685 | |
|
|
2686 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2687 | |
|
|
2688 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2689 | ev_init (&pipe_w, pipecb); |
|
|
2690 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2691 | #endif |
|
|
2692 | } |
|
|
2693 | } |
|
|
2694 | |
|
|
2695 | /* free up a loop structure */ |
|
|
2696 | void ecb_cold |
|
|
2697 | ev_loop_destroy (EV_P) |
|
|
2698 | { |
|
|
2699 | int i; |
|
|
2700 | |
|
|
2701 | #if EV_MULTIPLICITY |
|
|
2702 | /* mimic free (0) */ |
|
|
2703 | if (!EV_A) |
|
|
2704 | return; |
|
|
2705 | #endif |
|
|
2706 | |
|
|
2707 | #if EV_CLEANUP_ENABLE |
|
|
2708 | /* queue cleanup watchers (and execute them) */ |
|
|
2709 | if (expect_false (cleanupcnt)) |
|
|
2710 | { |
|
|
2711 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2712 | EV_INVOKE_PENDING; |
|
|
2713 | } |
|
|
2714 | #endif |
|
|
2715 | |
|
|
2716 | #if EV_CHILD_ENABLE |
|
|
2717 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
2718 | { |
|
|
2719 | ev_ref (EV_A); /* child watcher */ |
|
|
2720 | ev_signal_stop (EV_A_ &childev); |
|
|
2721 | } |
|
|
2722 | #endif |
|
|
2723 | |
|
|
2724 | if (ev_is_active (&pipe_w)) |
|
|
2725 | { |
|
|
2726 | /*ev_ref (EV_A);*/ |
|
|
2727 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
2728 | |
|
|
2729 | if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2730 | if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2731 | } |
|
|
2732 | |
|
|
2733 | #if EV_USE_SIGNALFD |
|
|
2734 | if (ev_is_active (&sigfd_w)) |
|
|
2735 | close (sigfd); |
|
|
2736 | #endif |
|
|
2737 | |
|
|
2738 | #if EV_USE_INOTIFY |
|
|
2739 | if (fs_fd >= 0) |
|
|
2740 | close (fs_fd); |
|
|
2741 | #endif |
|
|
2742 | |
|
|
2743 | if (backend_fd >= 0) |
|
|
2744 | close (backend_fd); |
|
|
2745 | |
|
|
2746 | #if EV_USE_IOCP |
|
|
2747 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2748 | #endif |
|
|
2749 | #if EV_USE_PORT |
|
|
2750 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
2751 | #endif |
|
|
2752 | #if EV_USE_KQUEUE |
|
|
2753 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
2754 | #endif |
|
|
2755 | #if EV_USE_EPOLL |
|
|
2756 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
2757 | #endif |
|
|
2758 | #if EV_USE_POLL |
|
|
2759 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
2760 | #endif |
|
|
2761 | #if EV_USE_SELECT |
|
|
2762 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
2763 | #endif |
|
|
2764 | |
|
|
2765 | for (i = NUMPRI; i--; ) |
|
|
2766 | { |
|
|
2767 | array_free (pending, [i]); |
|
|
2768 | #if EV_IDLE_ENABLE |
|
|
2769 | array_free (idle, [i]); |
|
|
2770 | #endif |
|
|
2771 | } |
|
|
2772 | |
|
|
2773 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
2774 | |
|
|
2775 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
2776 | array_free (rfeed, EMPTY); |
|
|
2777 | array_free (fdchange, EMPTY); |
|
|
2778 | array_free (timer, EMPTY); |
|
|
2779 | #if EV_PERIODIC_ENABLE |
|
|
2780 | array_free (periodic, EMPTY); |
|
|
2781 | #endif |
|
|
2782 | #if EV_FORK_ENABLE |
|
|
2783 | array_free (fork, EMPTY); |
|
|
2784 | #endif |
|
|
2785 | #if EV_CLEANUP_ENABLE |
|
|
2786 | array_free (cleanup, EMPTY); |
|
|
2787 | #endif |
|
|
2788 | array_free (prepare, EMPTY); |
|
|
2789 | array_free (check, EMPTY); |
|
|
2790 | #if EV_ASYNC_ENABLE |
|
|
2791 | array_free (async, EMPTY); |
|
|
2792 | #endif |
|
|
2793 | |
|
|
2794 | backend = 0; |
|
|
2795 | |
|
|
2796 | #if EV_MULTIPLICITY |
|
|
2797 | if (ev_is_default_loop (EV_A)) |
|
|
2798 | #endif |
|
|
2799 | ev_default_loop_ptr = 0; |
|
|
2800 | #if EV_MULTIPLICITY |
|
|
2801 | else |
|
|
2802 | ev_free (EV_A); |
|
|
2803 | #endif |
|
|
2804 | } |
|
|
2805 | |
|
|
2806 | #if EV_USE_INOTIFY |
|
|
2807 | inline_size void infy_fork (EV_P); |
|
|
2808 | #endif |
|
|
2809 | |
|
|
2810 | inline_size void |
|
|
2811 | loop_fork (EV_P) |
|
|
2812 | { |
|
|
2813 | #if EV_USE_PORT |
|
|
2814 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
2815 | #endif |
|
|
2816 | #if EV_USE_KQUEUE |
|
|
2817 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
2818 | #endif |
|
|
2819 | #if EV_USE_EPOLL |
|
|
2820 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
2821 | #endif |
|
|
2822 | #if EV_USE_INOTIFY |
|
|
2823 | infy_fork (EV_A); |
|
|
2824 | #endif |
|
|
2825 | |
|
|
2826 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2827 | if (ev_is_active (&pipe_w)) |
|
|
2828 | { |
|
|
2829 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
2830 | |
|
|
2831 | ev_ref (EV_A); |
|
|
2832 | ev_io_stop (EV_A_ &pipe_w); |
|
|
2833 | |
|
|
2834 | if (evpipe [0] >= 0) |
|
|
2835 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2836 | |
|
|
2837 | evpipe_init (EV_A); |
|
|
2838 | /* iterate over everything, in case we missed something before */ |
|
|
2839 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2840 | } |
|
|
2841 | #endif |
|
|
2842 | |
|
|
2843 | postfork = 0; |
|
|
2844 | } |
|
|
2845 | |
|
|
2846 | #if EV_MULTIPLICITY |
|
|
2847 | |
|
|
2848 | struct ev_loop * ecb_cold |
|
|
2849 | ev_loop_new (unsigned int flags) EV_THROW |
|
|
2850 | { |
|
|
2851 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
2852 | |
|
|
2853 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
2854 | loop_init (EV_A_ flags); |
|
|
2855 | |
|
|
2856 | if (ev_backend (EV_A)) |
|
|
2857 | return EV_A; |
|
|
2858 | |
|
|
2859 | ev_free (EV_A); |
|
|
2860 | return 0; |
|
|
2861 | } |
|
|
2862 | |
|
|
2863 | #endif /* multiplicity */ |
|
|
2864 | |
|
|
2865 | #if EV_VERIFY |
|
|
2866 | static void noinline ecb_cold |
|
|
2867 | verify_watcher (EV_P_ W w) |
|
|
2868 | { |
|
|
2869 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
2870 | |
|
|
2871 | if (w->pending) |
|
|
2872 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
2873 | } |
|
|
2874 | |
|
|
2875 | static void noinline ecb_cold |
|
|
2876 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
2877 | { |
|
|
2878 | int i; |
|
|
2879 | |
|
|
2880 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
2881 | { |
|
|
2882 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
2883 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
2884 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
2885 | |
|
|
2886 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
2887 | } |
|
|
2888 | } |
|
|
2889 | |
|
|
2890 | static void noinline ecb_cold |
|
|
2891 | array_verify (EV_P_ W *ws, int cnt) |
|
|
2892 | { |
|
|
2893 | while (cnt--) |
|
|
2894 | { |
|
|
2895 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
2896 | verify_watcher (EV_A_ ws [cnt]); |
|
|
2897 | } |
|
|
2898 | } |
|
|
2899 | #endif |
|
|
2900 | |
|
|
2901 | #if EV_FEATURE_API |
|
|
2902 | void ecb_cold |
|
|
2903 | ev_verify (EV_P) EV_THROW |
|
|
2904 | { |
|
|
2905 | #if EV_VERIFY |
|
|
2906 | int i; |
|
|
2907 | WL w, w2; |
|
|
2908 | |
|
|
2909 | assert (activecnt >= -1); |
|
|
2910 | |
|
|
2911 | assert (fdchangemax >= fdchangecnt); |
|
|
2912 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2913 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
2914 | |
|
|
2915 | assert (anfdmax >= 0); |
|
|
2916 | for (i = 0; i < anfdmax; ++i) |
|
|
2917 | { |
|
|
2918 | int j = 0; |
|
|
2919 | |
|
|
2920 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
2921 | { |
|
|
2922 | verify_watcher (EV_A_ (W)w); |
|
|
2923 | |
|
|
2924 | if (j++ & 1) |
|
|
2925 | { |
|
|
2926 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
2927 | w2 = w2->next; |
|
|
2928 | } |
|
|
2929 | |
|
|
2930 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
2931 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
2932 | } |
|
|
2933 | } |
|
|
2934 | |
|
|
2935 | assert (timermax >= timercnt); |
|
|
2936 | verify_heap (EV_A_ timers, timercnt); |
|
|
2937 | |
|
|
2938 | #if EV_PERIODIC_ENABLE |
|
|
2939 | assert (periodicmax >= periodiccnt); |
|
|
2940 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
2941 | #endif |
|
|
2942 | |
|
|
2943 | for (i = NUMPRI; i--; ) |
|
|
2944 | { |
|
|
2945 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2946 | #if EV_IDLE_ENABLE |
|
|
2947 | assert (idleall >= 0); |
|
|
2948 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2949 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2950 | #endif |
|
|
2951 | } |
|
|
2952 | |
|
|
2953 | #if EV_FORK_ENABLE |
|
|
2954 | assert (forkmax >= forkcnt); |
|
|
2955 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
2956 | #endif |
|
|
2957 | |
|
|
2958 | #if EV_CLEANUP_ENABLE |
|
|
2959 | assert (cleanupmax >= cleanupcnt); |
|
|
2960 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2961 | #endif |
|
|
2962 | |
|
|
2963 | #if EV_ASYNC_ENABLE |
|
|
2964 | assert (asyncmax >= asynccnt); |
|
|
2965 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
2966 | #endif |
|
|
2967 | |
|
|
2968 | #if EV_PREPARE_ENABLE |
|
|
2969 | assert (preparemax >= preparecnt); |
|
|
2970 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2971 | #endif |
|
|
2972 | |
|
|
2973 | #if EV_CHECK_ENABLE |
|
|
2974 | assert (checkmax >= checkcnt); |
|
|
2975 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
2976 | #endif |
|
|
2977 | |
|
|
2978 | # if 0 |
|
|
2979 | #if EV_CHILD_ENABLE |
|
|
2980 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2981 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
2982 | #endif |
|
|
2983 | # endif |
|
|
2984 | #endif |
|
|
2985 | } |
|
|
2986 | #endif |
|
|
2987 | |
|
|
2988 | #if EV_MULTIPLICITY |
|
|
2989 | struct ev_loop * ecb_cold |
|
|
2990 | #else |
444 | int |
2991 | int |
445 | ev_version_major (void) |
2992 | #endif |
|
|
2993 | ev_default_loop (unsigned int flags) EV_THROW |
446 | { |
2994 | { |
447 | return EV_VERSION_MAJOR; |
2995 | if (!ev_default_loop_ptr) |
|
|
2996 | { |
|
|
2997 | #if EV_MULTIPLICITY |
|
|
2998 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
|
|
2999 | #else |
|
|
3000 | ev_default_loop_ptr = 1; |
|
|
3001 | #endif |
|
|
3002 | |
|
|
3003 | loop_init (EV_A_ flags); |
|
|
3004 | |
|
|
3005 | if (ev_backend (EV_A)) |
|
|
3006 | { |
|
|
3007 | #if EV_CHILD_ENABLE |
|
|
3008 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
3009 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
3010 | ev_signal_start (EV_A_ &childev); |
|
|
3011 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
3012 | #endif |
|
|
3013 | } |
|
|
3014 | else |
|
|
3015 | ev_default_loop_ptr = 0; |
|
|
3016 | } |
|
|
3017 | |
|
|
3018 | return ev_default_loop_ptr; |
|
|
3019 | } |
|
|
3020 | |
|
|
3021 | void |
|
|
3022 | ev_loop_fork (EV_P) EV_THROW |
|
|
3023 | { |
|
|
3024 | postfork = 1; |
|
|
3025 | } |
|
|
3026 | |
|
|
3027 | /*****************************************************************************/ |
|
|
3028 | |
|
|
3029 | void |
|
|
3030 | ev_invoke (EV_P_ void *w, int revents) |
|
|
3031 | { |
|
|
3032 | EV_CB_INVOKE ((W)w, revents); |
|
|
3033 | } |
|
|
3034 | |
|
|
3035 | unsigned int |
|
|
3036 | ev_pending_count (EV_P) EV_THROW |
|
|
3037 | { |
|
|
3038 | int pri; |
|
|
3039 | unsigned int count = 0; |
|
|
3040 | |
|
|
3041 | for (pri = NUMPRI; pri--; ) |
|
|
3042 | count += pendingcnt [pri]; |
|
|
3043 | |
|
|
3044 | return count; |
|
|
3045 | } |
|
|
3046 | |
|
|
3047 | void noinline |
|
|
3048 | ev_invoke_pending (EV_P) |
|
|
3049 | { |
|
|
3050 | pendingpri = NUMPRI; |
|
|
3051 | |
|
|
3052 | while (pendingpri) /* pendingpri possibly gets modified in the inner loop */ |
|
|
3053 | { |
|
|
3054 | --pendingpri; |
|
|
3055 | |
|
|
3056 | while (pendingcnt [pendingpri]) |
|
|
3057 | { |
|
|
3058 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
|
|
3059 | |
|
|
3060 | p->w->pending = 0; |
|
|
3061 | EV_CB_INVOKE (p->w, p->events); |
|
|
3062 | EV_FREQUENT_CHECK; |
|
|
3063 | } |
|
|
3064 | } |
|
|
3065 | } |
|
|
3066 | |
|
|
3067 | #if EV_IDLE_ENABLE |
|
|
3068 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
3069 | /* only when higher priorities are idle" logic */ |
|
|
3070 | inline_size void |
|
|
3071 | idle_reify (EV_P) |
|
|
3072 | { |
|
|
3073 | if (expect_false (idleall)) |
|
|
3074 | { |
|
|
3075 | int pri; |
|
|
3076 | |
|
|
3077 | for (pri = NUMPRI; pri--; ) |
|
|
3078 | { |
|
|
3079 | if (pendingcnt [pri]) |
|
|
3080 | break; |
|
|
3081 | |
|
|
3082 | if (idlecnt [pri]) |
|
|
3083 | { |
|
|
3084 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
3085 | break; |
|
|
3086 | } |
|
|
3087 | } |
|
|
3088 | } |
|
|
3089 | } |
|
|
3090 | #endif |
|
|
3091 | |
|
|
3092 | /* make timers pending */ |
|
|
3093 | inline_size void |
|
|
3094 | timers_reify (EV_P) |
|
|
3095 | { |
|
|
3096 | EV_FREQUENT_CHECK; |
|
|
3097 | |
|
|
3098 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
3099 | { |
|
|
3100 | do |
|
|
3101 | { |
|
|
3102 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
3103 | |
|
|
3104 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
3105 | |
|
|
3106 | /* first reschedule or stop timer */ |
|
|
3107 | if (w->repeat) |
|
|
3108 | { |
|
|
3109 | ev_at (w) += w->repeat; |
|
|
3110 | if (ev_at (w) < mn_now) |
|
|
3111 | ev_at (w) = mn_now; |
|
|
3112 | |
|
|
3113 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
3114 | |
|
|
3115 | ANHE_at_cache (timers [HEAP0]); |
|
|
3116 | downheap (timers, timercnt, HEAP0); |
|
|
3117 | } |
|
|
3118 | else |
|
|
3119 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3120 | |
|
|
3121 | EV_FREQUENT_CHECK; |
|
|
3122 | feed_reverse (EV_A_ (W)w); |
|
|
3123 | } |
|
|
3124 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
3125 | |
|
|
3126 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
3127 | } |
|
|
3128 | } |
|
|
3129 | |
|
|
3130 | #if EV_PERIODIC_ENABLE |
|
|
3131 | |
|
|
3132 | static void noinline |
|
|
3133 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
3134 | { |
|
|
3135 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
3136 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
3137 | |
|
|
3138 | /* the above almost always errs on the low side */ |
|
|
3139 | while (at <= ev_rt_now) |
|
|
3140 | { |
|
|
3141 | ev_tstamp nat = at + w->interval; |
|
|
3142 | |
|
|
3143 | /* when resolution fails us, we use ev_rt_now */ |
|
|
3144 | if (expect_false (nat == at)) |
|
|
3145 | { |
|
|
3146 | at = ev_rt_now; |
|
|
3147 | break; |
|
|
3148 | } |
|
|
3149 | |
|
|
3150 | at = nat; |
|
|
3151 | } |
|
|
3152 | |
|
|
3153 | ev_at (w) = at; |
|
|
3154 | } |
|
|
3155 | |
|
|
3156 | /* make periodics pending */ |
|
|
3157 | inline_size void |
|
|
3158 | periodics_reify (EV_P) |
|
|
3159 | { |
|
|
3160 | EV_FREQUENT_CHECK; |
|
|
3161 | |
|
|
3162 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
3163 | { |
|
|
3164 | do |
|
|
3165 | { |
|
|
3166 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
3167 | |
|
|
3168 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
3169 | |
|
|
3170 | /* first reschedule or stop timer */ |
|
|
3171 | if (w->reschedule_cb) |
|
|
3172 | { |
|
|
3173 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3174 | |
|
|
3175 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
3176 | |
|
|
3177 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3178 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3179 | } |
|
|
3180 | else if (w->interval) |
|
|
3181 | { |
|
|
3182 | periodic_recalc (EV_A_ w); |
|
|
3183 | ANHE_at_cache (periodics [HEAP0]); |
|
|
3184 | downheap (periodics, periodiccnt, HEAP0); |
|
|
3185 | } |
|
|
3186 | else |
|
|
3187 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
3188 | |
|
|
3189 | EV_FREQUENT_CHECK; |
|
|
3190 | feed_reverse (EV_A_ (W)w); |
|
|
3191 | } |
|
|
3192 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
3193 | |
|
|
3194 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
3195 | } |
|
|
3196 | } |
|
|
3197 | |
|
|
3198 | /* simply recalculate all periodics */ |
|
|
3199 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
3200 | static void noinline ecb_cold |
|
|
3201 | periodics_reschedule (EV_P) |
|
|
3202 | { |
|
|
3203 | int i; |
|
|
3204 | |
|
|
3205 | /* adjust periodics after time jump */ |
|
|
3206 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
3207 | { |
|
|
3208 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
3209 | |
|
|
3210 | if (w->reschedule_cb) |
|
|
3211 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3212 | else if (w->interval) |
|
|
3213 | periodic_recalc (EV_A_ w); |
|
|
3214 | |
|
|
3215 | ANHE_at_cache (periodics [i]); |
|
|
3216 | } |
|
|
3217 | |
|
|
3218 | reheap (periodics, periodiccnt); |
|
|
3219 | } |
|
|
3220 | #endif |
|
|
3221 | |
|
|
3222 | /* adjust all timers by a given offset */ |
|
|
3223 | static void noinline ecb_cold |
|
|
3224 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
3225 | { |
|
|
3226 | int i; |
|
|
3227 | |
|
|
3228 | for (i = 0; i < timercnt; ++i) |
|
|
3229 | { |
|
|
3230 | ANHE *he = timers + i + HEAP0; |
|
|
3231 | ANHE_w (*he)->at += adjust; |
|
|
3232 | ANHE_at_cache (*he); |
|
|
3233 | } |
|
|
3234 | } |
|
|
3235 | |
|
|
3236 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
3237 | /* also detect if there was a timejump, and act accordingly */ |
|
|
3238 | inline_speed void |
|
|
3239 | time_update (EV_P_ ev_tstamp max_block) |
|
|
3240 | { |
|
|
3241 | #if EV_USE_MONOTONIC |
|
|
3242 | if (expect_true (have_monotonic)) |
|
|
3243 | { |
|
|
3244 | int i; |
|
|
3245 | ev_tstamp odiff = rtmn_diff; |
|
|
3246 | |
|
|
3247 | mn_now = get_clock (); |
|
|
3248 | |
|
|
3249 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
3250 | /* interpolate in the meantime */ |
|
|
3251 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
3252 | { |
|
|
3253 | ev_rt_now = rtmn_diff + mn_now; |
|
|
3254 | return; |
|
|
3255 | } |
|
|
3256 | |
|
|
3257 | now_floor = mn_now; |
|
|
3258 | ev_rt_now = ev_time (); |
|
|
3259 | |
|
|
3260 | /* loop a few times, before making important decisions. |
|
|
3261 | * on the choice of "4": one iteration isn't enough, |
|
|
3262 | * in case we get preempted during the calls to |
|
|
3263 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
3264 | * to succeed in that case, though. and looping a few more times |
|
|
3265 | * doesn't hurt either as we only do this on time-jumps or |
|
|
3266 | * in the unlikely event of having been preempted here. |
|
|
3267 | */ |
|
|
3268 | for (i = 4; --i; ) |
|
|
3269 | { |
|
|
3270 | ev_tstamp diff; |
|
|
3271 | rtmn_diff = ev_rt_now - mn_now; |
|
|
3272 | |
|
|
3273 | diff = odiff - rtmn_diff; |
|
|
3274 | |
|
|
3275 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
|
|
3276 | return; /* all is well */ |
|
|
3277 | |
|
|
3278 | ev_rt_now = ev_time (); |
|
|
3279 | mn_now = get_clock (); |
|
|
3280 | now_floor = mn_now; |
|
|
3281 | } |
|
|
3282 | |
|
|
3283 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
3284 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
3285 | # if EV_PERIODIC_ENABLE |
|
|
3286 | periodics_reschedule (EV_A); |
|
|
3287 | # endif |
|
|
3288 | } |
|
|
3289 | else |
|
|
3290 | #endif |
|
|
3291 | { |
|
|
3292 | ev_rt_now = ev_time (); |
|
|
3293 | |
|
|
3294 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
3295 | { |
|
|
3296 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3297 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
3298 | #if EV_PERIODIC_ENABLE |
|
|
3299 | periodics_reschedule (EV_A); |
|
|
3300 | #endif |
|
|
3301 | } |
|
|
3302 | |
|
|
3303 | mn_now = ev_rt_now; |
|
|
3304 | } |
448 | } |
3305 | } |
449 | |
3306 | |
450 | int |
3307 | int |
451 | ev_version_minor (void) |
3308 | ev_run (EV_P_ int flags) |
452 | { |
3309 | { |
453 | return EV_VERSION_MINOR; |
3310 | #if EV_FEATURE_API |
454 | } |
3311 | ++loop_depth; |
|
|
3312 | #endif |
455 | |
3313 | |
456 | int ev_init (int flags) |
3314 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
457 | { |
3315 | |
458 | if (!ev_method) |
3316 | loop_done = EVBREAK_CANCEL; |
|
|
3317 | |
|
|
3318 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
3319 | |
|
|
3320 | do |
459 | { |
3321 | { |
460 | #if EV_USE_MONOTONIC |
3322 | #if EV_VERIFY >= 2 |
|
|
3323 | ev_verify (EV_A); |
|
|
3324 | #endif |
|
|
3325 | |
|
|
3326 | #ifndef _WIN32 |
|
|
3327 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
3328 | if (expect_false (getpid () != curpid)) |
|
|
3329 | { |
|
|
3330 | curpid = getpid (); |
|
|
3331 | postfork = 1; |
|
|
3332 | } |
|
|
3333 | #endif |
|
|
3334 | |
|
|
3335 | #if EV_FORK_ENABLE |
|
|
3336 | /* we might have forked, so queue fork handlers */ |
|
|
3337 | if (expect_false (postfork)) |
|
|
3338 | if (forkcnt) |
|
|
3339 | { |
|
|
3340 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
3341 | EV_INVOKE_PENDING; |
|
|
3342 | } |
|
|
3343 | #endif |
|
|
3344 | |
|
|
3345 | #if EV_PREPARE_ENABLE |
|
|
3346 | /* queue prepare watchers (and execute them) */ |
|
|
3347 | if (expect_false (preparecnt)) |
|
|
3348 | { |
|
|
3349 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
3350 | EV_INVOKE_PENDING; |
|
|
3351 | } |
|
|
3352 | #endif |
|
|
3353 | |
|
|
3354 | if (expect_false (loop_done)) |
|
|
3355 | break; |
|
|
3356 | |
|
|
3357 | /* we might have forked, so reify kernel state if necessary */ |
|
|
3358 | if (expect_false (postfork)) |
|
|
3359 | loop_fork (EV_A); |
|
|
3360 | |
|
|
3361 | /* update fd-related kernel structures */ |
|
|
3362 | fd_reify (EV_A); |
|
|
3363 | |
|
|
3364 | /* calculate blocking time */ |
461 | { |
3365 | { |
462 | struct timespec ts; |
3366 | ev_tstamp waittime = 0.; |
463 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
3367 | ev_tstamp sleeptime = 0.; |
464 | have_monotonic = 1; |
3368 | |
|
|
3369 | /* remember old timestamp for io_blocktime calculation */ |
|
|
3370 | ev_tstamp prev_mn_now = mn_now; |
|
|
3371 | |
|
|
3372 | /* update time to cancel out callback processing overhead */ |
|
|
3373 | time_update (EV_A_ 1e100); |
|
|
3374 | |
|
|
3375 | /* from now on, we want a pipe-wake-up */ |
|
|
3376 | pipe_write_wanted = 1; |
|
|
3377 | |
|
|
3378 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3379 | |
|
|
3380 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
|
|
3381 | { |
|
|
3382 | waittime = MAX_BLOCKTIME; |
|
|
3383 | |
|
|
3384 | if (timercnt) |
|
|
3385 | { |
|
|
3386 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
|
|
3387 | if (waittime > to) waittime = to; |
|
|
3388 | } |
|
|
3389 | |
|
|
3390 | #if EV_PERIODIC_ENABLE |
|
|
3391 | if (periodiccnt) |
|
|
3392 | { |
|
|
3393 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
|
|
3394 | if (waittime > to) waittime = to; |
|
|
3395 | } |
|
|
3396 | #endif |
|
|
3397 | |
|
|
3398 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
3399 | if (expect_false (waittime < timeout_blocktime)) |
|
|
3400 | waittime = timeout_blocktime; |
|
|
3401 | |
|
|
3402 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3403 | /* to pass a minimum nonzero value to the backend */ |
|
|
3404 | if (expect_false (waittime < backend_mintime)) |
|
|
3405 | waittime = backend_mintime; |
|
|
3406 | |
|
|
3407 | /* extra check because io_blocktime is commonly 0 */ |
|
|
3408 | if (expect_false (io_blocktime)) |
|
|
3409 | { |
|
|
3410 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
3411 | |
|
|
3412 | if (sleeptime > waittime - backend_mintime) |
|
|
3413 | sleeptime = waittime - backend_mintime; |
|
|
3414 | |
|
|
3415 | if (expect_true (sleeptime > 0.)) |
|
|
3416 | { |
|
|
3417 | ev_sleep (sleeptime); |
|
|
3418 | waittime -= sleeptime; |
|
|
3419 | } |
|
|
3420 | } |
|
|
3421 | } |
|
|
3422 | |
|
|
3423 | #if EV_FEATURE_API |
|
|
3424 | ++loop_count; |
|
|
3425 | #endif |
|
|
3426 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
3427 | backend_poll (EV_A_ waittime); |
|
|
3428 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3429 | |
|
|
3430 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3431 | |
|
|
3432 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3433 | if (pipe_write_skipped) |
|
|
3434 | { |
|
|
3435 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3436 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3437 | } |
|
|
3438 | |
|
|
3439 | |
|
|
3440 | /* update ev_rt_now, do magic */ |
|
|
3441 | time_update (EV_A_ waittime + sleeptime); |
465 | } |
3442 | } |
466 | #endif |
|
|
467 | |
3443 | |
468 | ev_now = ev_time (); |
3444 | /* queue pending timers and reschedule them */ |
469 | now = get_clock (); |
3445 | timers_reify (EV_A); /* relative timers called last */ |
470 | diff = ev_now - now; |
3446 | #if EV_PERIODIC_ENABLE |
471 | |
3447 | periodics_reify (EV_A); /* absolute timers called first */ |
472 | if (pipe (sigpipe)) |
|
|
473 | return 0; |
|
|
474 | |
|
|
475 | ev_method = EVMETHOD_NONE; |
|
|
476 | #if EV_USE_EPOLL |
|
|
477 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
478 | #endif |
3448 | #endif |
479 | #if EV_USE_SELECT |
|
|
480 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
481 | #endif |
|
|
482 | |
3449 | |
483 | if (ev_method) |
3450 | #if EV_IDLE_ENABLE |
|
|
3451 | /* queue idle watchers unless other events are pending */ |
|
|
3452 | idle_reify (EV_A); |
|
|
3453 | #endif |
|
|
3454 | |
|
|
3455 | #if EV_CHECK_ENABLE |
|
|
3456 | /* queue check watchers, to be executed first */ |
|
|
3457 | if (expect_false (checkcnt)) |
|
|
3458 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3459 | #endif |
|
|
3460 | |
|
|
3461 | EV_INVOKE_PENDING; |
|
|
3462 | } |
|
|
3463 | while (expect_true ( |
|
|
3464 | activecnt |
|
|
3465 | && !loop_done |
|
|
3466 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3467 | )); |
|
|
3468 | |
|
|
3469 | if (loop_done == EVBREAK_ONE) |
|
|
3470 | loop_done = EVBREAK_CANCEL; |
|
|
3471 | |
|
|
3472 | #if EV_FEATURE_API |
|
|
3473 | --loop_depth; |
|
|
3474 | #endif |
|
|
3475 | |
|
|
3476 | return activecnt; |
|
|
3477 | } |
|
|
3478 | |
|
|
3479 | void |
|
|
3480 | ev_break (EV_P_ int how) EV_THROW |
|
|
3481 | { |
|
|
3482 | loop_done = how; |
|
|
3483 | } |
|
|
3484 | |
|
|
3485 | void |
|
|
3486 | ev_ref (EV_P) EV_THROW |
|
|
3487 | { |
|
|
3488 | ++activecnt; |
|
|
3489 | } |
|
|
3490 | |
|
|
3491 | void |
|
|
3492 | ev_unref (EV_P) EV_THROW |
|
|
3493 | { |
|
|
3494 | --activecnt; |
|
|
3495 | } |
|
|
3496 | |
|
|
3497 | void |
|
|
3498 | ev_now_update (EV_P) EV_THROW |
|
|
3499 | { |
|
|
3500 | time_update (EV_A_ 1e100); |
|
|
3501 | } |
|
|
3502 | |
|
|
3503 | void |
|
|
3504 | ev_suspend (EV_P) EV_THROW |
|
|
3505 | { |
|
|
3506 | ev_now_update (EV_A); |
|
|
3507 | } |
|
|
3508 | |
|
|
3509 | void |
|
|
3510 | ev_resume (EV_P) EV_THROW |
|
|
3511 | { |
|
|
3512 | ev_tstamp mn_prev = mn_now; |
|
|
3513 | |
|
|
3514 | ev_now_update (EV_A); |
|
|
3515 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3516 | #if EV_PERIODIC_ENABLE |
|
|
3517 | /* TODO: really do this? */ |
|
|
3518 | periodics_reschedule (EV_A); |
|
|
3519 | #endif |
|
|
3520 | } |
|
|
3521 | |
|
|
3522 | /*****************************************************************************/ |
|
|
3523 | /* singly-linked list management, used when the expected list length is short */ |
|
|
3524 | |
|
|
3525 | inline_size void |
|
|
3526 | wlist_add (WL *head, WL elem) |
|
|
3527 | { |
|
|
3528 | elem->next = *head; |
|
|
3529 | *head = elem; |
|
|
3530 | } |
|
|
3531 | |
|
|
3532 | inline_size void |
|
|
3533 | wlist_del (WL *head, WL elem) |
|
|
3534 | { |
|
|
3535 | while (*head) |
|
|
3536 | { |
|
|
3537 | if (expect_true (*head == elem)) |
484 | { |
3538 | { |
485 | ev_watcher_init (&sigev, sigcb); |
3539 | *head = elem->next; |
486 | siginit (); |
3540 | break; |
487 | |
|
|
488 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
489 | ev_signal_start (&childev); |
|
|
490 | } |
3541 | } |
|
|
3542 | |
|
|
3543 | head = &(*head)->next; |
|
|
3544 | } |
|
|
3545 | } |
|
|
3546 | |
|
|
3547 | /* internal, faster, version of ev_clear_pending */ |
|
|
3548 | inline_speed void |
|
|
3549 | clear_pending (EV_P_ W w) |
|
|
3550 | { |
|
|
3551 | if (w->pending) |
491 | } |
3552 | { |
|
|
3553 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
3554 | w->pending = 0; |
|
|
3555 | } |
|
|
3556 | } |
492 | |
3557 | |
493 | return ev_method; |
3558 | int |
|
|
3559 | ev_clear_pending (EV_P_ void *w) EV_THROW |
|
|
3560 | { |
|
|
3561 | W w_ = (W)w; |
|
|
3562 | int pending = w_->pending; |
|
|
3563 | |
|
|
3564 | if (expect_true (pending)) |
|
|
3565 | { |
|
|
3566 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3567 | p->w = (W)&pending_w; |
|
|
3568 | w_->pending = 0; |
|
|
3569 | return p->events; |
|
|
3570 | } |
|
|
3571 | else |
|
|
3572 | return 0; |
|
|
3573 | } |
|
|
3574 | |
|
|
3575 | inline_size void |
|
|
3576 | pri_adjust (EV_P_ W w) |
|
|
3577 | { |
|
|
3578 | int pri = ev_priority (w); |
|
|
3579 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
3580 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
3581 | ev_set_priority (w, pri); |
|
|
3582 | } |
|
|
3583 | |
|
|
3584 | inline_speed void |
|
|
3585 | ev_start (EV_P_ W w, int active) |
|
|
3586 | { |
|
|
3587 | pri_adjust (EV_A_ w); |
|
|
3588 | w->active = active; |
|
|
3589 | ev_ref (EV_A); |
|
|
3590 | } |
|
|
3591 | |
|
|
3592 | inline_size void |
|
|
3593 | ev_stop (EV_P_ W w) |
|
|
3594 | { |
|
|
3595 | ev_unref (EV_A); |
|
|
3596 | w->active = 0; |
494 | } |
3597 | } |
495 | |
3598 | |
496 | /*****************************************************************************/ |
3599 | /*****************************************************************************/ |
497 | |
3600 | |
498 | void |
3601 | void noinline |
499 | ev_fork_prepare (void) |
3602 | ev_io_start (EV_P_ ev_io *w) EV_THROW |
500 | { |
3603 | { |
501 | /* nop */ |
3604 | int fd = w->fd; |
502 | } |
|
|
503 | |
3605 | |
504 | void |
3606 | if (expect_false (ev_is_active (w))) |
505 | ev_fork_parent (void) |
3607 | return; |
506 | { |
|
|
507 | /* nop */ |
|
|
508 | } |
|
|
509 | |
3608 | |
510 | void |
3609 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
511 | ev_fork_child (void) |
3610 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
512 | { |
|
|
513 | #if EV_USE_EPOLL |
|
|
514 | if (ev_method == EVMETHOD_EPOLL) |
|
|
515 | epoll_postfork_child (); |
|
|
516 | #endif |
|
|
517 | |
3611 | |
518 | ev_io_stop (&sigev); |
3612 | EV_FREQUENT_CHECK; |
519 | close (sigpipe [0]); |
|
|
520 | close (sigpipe [1]); |
|
|
521 | pipe (sigpipe); |
|
|
522 | siginit (); |
|
|
523 | } |
|
|
524 | |
3613 | |
525 | /*****************************************************************************/ |
3614 | ev_start (EV_A_ (W)w, 1); |
|
|
3615 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
3616 | wlist_add (&anfds[fd].head, (WL)w); |
526 | |
3617 | |
527 | static void |
3618 | /* common bug, apparently */ |
528 | call_pending (void) |
3619 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
3620 | |
|
|
3621 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
3622 | w->events &= ~EV__IOFDSET; |
|
|
3623 | |
|
|
3624 | EV_FREQUENT_CHECK; |
|
|
3625 | } |
|
|
3626 | |
|
|
3627 | void noinline |
|
|
3628 | ev_io_stop (EV_P_ ev_io *w) EV_THROW |
529 | { |
3629 | { |
530 | while (pendingcnt) |
3630 | clear_pending (EV_A_ (W)w); |
|
|
3631 | if (expect_false (!ev_is_active (w))) |
|
|
3632 | return; |
|
|
3633 | |
|
|
3634 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
3635 | |
|
|
3636 | EV_FREQUENT_CHECK; |
|
|
3637 | |
|
|
3638 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
3639 | ev_stop (EV_A_ (W)w); |
|
|
3640 | |
|
|
3641 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
3642 | |
|
|
3643 | EV_FREQUENT_CHECK; |
|
|
3644 | } |
|
|
3645 | |
|
|
3646 | void noinline |
|
|
3647 | ev_timer_start (EV_P_ ev_timer *w) EV_THROW |
|
|
3648 | { |
|
|
3649 | if (expect_false (ev_is_active (w))) |
|
|
3650 | return; |
|
|
3651 | |
|
|
3652 | ev_at (w) += mn_now; |
|
|
3653 | |
|
|
3654 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
3655 | |
|
|
3656 | EV_FREQUENT_CHECK; |
|
|
3657 | |
|
|
3658 | ++timercnt; |
|
|
3659 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
3660 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
3661 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
3662 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3663 | upheap (timers, ev_active (w)); |
|
|
3664 | |
|
|
3665 | EV_FREQUENT_CHECK; |
|
|
3666 | |
|
|
3667 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
3668 | } |
|
|
3669 | |
|
|
3670 | void noinline |
|
|
3671 | ev_timer_stop (EV_P_ ev_timer *w) EV_THROW |
|
|
3672 | { |
|
|
3673 | clear_pending (EV_A_ (W)w); |
|
|
3674 | if (expect_false (!ev_is_active (w))) |
|
|
3675 | return; |
|
|
3676 | |
|
|
3677 | EV_FREQUENT_CHECK; |
|
|
3678 | |
531 | { |
3679 | { |
532 | ANPENDING *p = pendings + --pendingcnt; |
3680 | int active = ev_active (w); |
533 | |
3681 | |
534 | if (p->w) |
3682 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3683 | |
|
|
3684 | --timercnt; |
|
|
3685 | |
|
|
3686 | if (expect_true (active < timercnt + HEAP0)) |
535 | { |
3687 | { |
536 | p->w->pending = 0; |
3688 | timers [active] = timers [timercnt + HEAP0]; |
537 | p->w->cb (p->w, p->events); |
3689 | adjustheap (timers, timercnt, active); |
538 | } |
3690 | } |
|
|
3691 | } |
|
|
3692 | |
|
|
3693 | ev_at (w) -= mn_now; |
|
|
3694 | |
|
|
3695 | ev_stop (EV_A_ (W)w); |
|
|
3696 | |
|
|
3697 | EV_FREQUENT_CHECK; |
|
|
3698 | } |
|
|
3699 | |
|
|
3700 | void noinline |
|
|
3701 | ev_timer_again (EV_P_ ev_timer *w) EV_THROW |
|
|
3702 | { |
|
|
3703 | EV_FREQUENT_CHECK; |
|
|
3704 | |
|
|
3705 | clear_pending (EV_A_ (W)w); |
|
|
3706 | |
|
|
3707 | if (ev_is_active (w)) |
539 | } |
3708 | { |
540 | } |
|
|
541 | |
|
|
542 | static void |
|
|
543 | timers_reify (void) |
|
|
544 | { |
|
|
545 | while (timercnt && timers [0]->at <= now) |
|
|
546 | { |
|
|
547 | struct ev_timer *w = timers [0]; |
|
|
548 | |
|
|
549 | /* first reschedule or stop timer */ |
|
|
550 | if (w->repeat) |
3709 | if (w->repeat) |
551 | { |
3710 | { |
552 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
553 | w->at = now + w->repeat; |
3711 | ev_at (w) = mn_now + w->repeat; |
554 | downheap ((WT *)timers, timercnt, 0); |
3712 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3713 | adjustheap (timers, timercnt, ev_active (w)); |
555 | } |
3714 | } |
556 | else |
3715 | else |
557 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
3716 | ev_timer_stop (EV_A_ w); |
558 | |
|
|
559 | event ((W)w, EV_TIMEOUT); |
|
|
560 | } |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void |
|
|
564 | periodics_reify (void) |
|
|
565 | { |
|
|
566 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
567 | { |
3717 | } |
568 | struct ev_periodic *w = periodics [0]; |
3718 | else if (w->repeat) |
|
|
3719 | { |
|
|
3720 | ev_at (w) = w->repeat; |
|
|
3721 | ev_timer_start (EV_A_ w); |
|
|
3722 | } |
569 | |
3723 | |
570 | /* first reschedule or stop timer */ |
3724 | EV_FREQUENT_CHECK; |
|
|
3725 | } |
|
|
3726 | |
|
|
3727 | ev_tstamp |
|
|
3728 | ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW |
|
|
3729 | { |
|
|
3730 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
3731 | } |
|
|
3732 | |
|
|
3733 | #if EV_PERIODIC_ENABLE |
|
|
3734 | void noinline |
|
|
3735 | ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW |
|
|
3736 | { |
|
|
3737 | if (expect_false (ev_is_active (w))) |
|
|
3738 | return; |
|
|
3739 | |
|
|
3740 | if (w->reschedule_cb) |
|
|
3741 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
571 | if (w->interval) |
3742 | else if (w->interval) |
|
|
3743 | { |
|
|
3744 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
3745 | periodic_recalc (EV_A_ w); |
|
|
3746 | } |
|
|
3747 | else |
|
|
3748 | ev_at (w) = w->offset; |
|
|
3749 | |
|
|
3750 | EV_FREQUENT_CHECK; |
|
|
3751 | |
|
|
3752 | ++periodiccnt; |
|
|
3753 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
|
|
3754 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
|
|
3755 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
3756 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
3757 | upheap (periodics, ev_active (w)); |
|
|
3758 | |
|
|
3759 | EV_FREQUENT_CHECK; |
|
|
3760 | |
|
|
3761 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
3762 | } |
|
|
3763 | |
|
|
3764 | void noinline |
|
|
3765 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW |
|
|
3766 | { |
|
|
3767 | clear_pending (EV_A_ (W)w); |
|
|
3768 | if (expect_false (!ev_is_active (w))) |
|
|
3769 | return; |
|
|
3770 | |
|
|
3771 | EV_FREQUENT_CHECK; |
|
|
3772 | |
|
|
3773 | { |
|
|
3774 | int active = ev_active (w); |
|
|
3775 | |
|
|
3776 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
3777 | |
|
|
3778 | --periodiccnt; |
|
|
3779 | |
|
|
3780 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
3781 | { |
|
|
3782 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
3783 | adjustheap (periodics, periodiccnt, active); |
|
|
3784 | } |
|
|
3785 | } |
|
|
3786 | |
|
|
3787 | ev_stop (EV_A_ (W)w); |
|
|
3788 | |
|
|
3789 | EV_FREQUENT_CHECK; |
|
|
3790 | } |
|
|
3791 | |
|
|
3792 | void noinline |
|
|
3793 | ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW |
|
|
3794 | { |
|
|
3795 | /* TODO: use adjustheap and recalculation */ |
|
|
3796 | ev_periodic_stop (EV_A_ w); |
|
|
3797 | ev_periodic_start (EV_A_ w); |
|
|
3798 | } |
|
|
3799 | #endif |
|
|
3800 | |
|
|
3801 | #ifndef SA_RESTART |
|
|
3802 | # define SA_RESTART 0 |
|
|
3803 | #endif |
|
|
3804 | |
|
|
3805 | #if EV_SIGNAL_ENABLE |
|
|
3806 | |
|
|
3807 | void noinline |
|
|
3808 | ev_signal_start (EV_P_ ev_signal *w) EV_THROW |
|
|
3809 | { |
|
|
3810 | if (expect_false (ev_is_active (w))) |
|
|
3811 | return; |
|
|
3812 | |
|
|
3813 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
3814 | |
|
|
3815 | #if EV_MULTIPLICITY |
|
|
3816 | assert (("libev: a signal must not be attached to two different loops", |
|
|
3817 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
3818 | |
|
|
3819 | signals [w->signum - 1].loop = EV_A; |
|
|
3820 | ECB_MEMORY_FENCE_RELEASE; |
|
|
3821 | #endif |
|
|
3822 | |
|
|
3823 | EV_FREQUENT_CHECK; |
|
|
3824 | |
|
|
3825 | #if EV_USE_SIGNALFD |
|
|
3826 | if (sigfd == -2) |
|
|
3827 | { |
|
|
3828 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
3829 | if (sigfd < 0 && errno == EINVAL) |
|
|
3830 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
3831 | |
|
|
3832 | if (sigfd >= 0) |
572 | { |
3833 | { |
573 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
3834 | fd_intern (sigfd); /* doing it twice will not hurt */ |
574 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
3835 | |
575 | downheap ((WT *)periodics, periodiccnt, 0); |
3836 | sigemptyset (&sigfd_set); |
|
|
3837 | |
|
|
3838 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
3839 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
3840 | ev_io_start (EV_A_ &sigfd_w); |
|
|
3841 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
3842 | } |
|
|
3843 | } |
|
|
3844 | |
|
|
3845 | if (sigfd >= 0) |
|
|
3846 | { |
|
|
3847 | /* TODO: check .head */ |
|
|
3848 | sigaddset (&sigfd_set, w->signum); |
|
|
3849 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
3850 | |
|
|
3851 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3852 | } |
|
|
3853 | #endif |
|
|
3854 | |
|
|
3855 | ev_start (EV_A_ (W)w, 1); |
|
|
3856 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
3857 | |
|
|
3858 | if (!((WL)w)->next) |
|
|
3859 | # if EV_USE_SIGNALFD |
|
|
3860 | if (sigfd < 0) /*TODO*/ |
|
|
3861 | # endif |
|
|
3862 | { |
|
|
3863 | # ifdef _WIN32 |
|
|
3864 | evpipe_init (EV_A); |
|
|
3865 | |
|
|
3866 | signal (w->signum, ev_sighandler); |
|
|
3867 | # else |
|
|
3868 | struct sigaction sa; |
|
|
3869 | |
|
|
3870 | evpipe_init (EV_A); |
|
|
3871 | |
|
|
3872 | sa.sa_handler = ev_sighandler; |
|
|
3873 | sigfillset (&sa.sa_mask); |
|
|
3874 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
3875 | sigaction (w->signum, &sa, 0); |
|
|
3876 | |
|
|
3877 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3878 | { |
|
|
3879 | sigemptyset (&sa.sa_mask); |
|
|
3880 | sigaddset (&sa.sa_mask, w->signum); |
|
|
3881 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3882 | } |
|
|
3883 | #endif |
|
|
3884 | } |
|
|
3885 | |
|
|
3886 | EV_FREQUENT_CHECK; |
|
|
3887 | } |
|
|
3888 | |
|
|
3889 | void noinline |
|
|
3890 | ev_signal_stop (EV_P_ ev_signal *w) EV_THROW |
|
|
3891 | { |
|
|
3892 | clear_pending (EV_A_ (W)w); |
|
|
3893 | if (expect_false (!ev_is_active (w))) |
|
|
3894 | return; |
|
|
3895 | |
|
|
3896 | EV_FREQUENT_CHECK; |
|
|
3897 | |
|
|
3898 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
3899 | ev_stop (EV_A_ (W)w); |
|
|
3900 | |
|
|
3901 | if (!signals [w->signum - 1].head) |
|
|
3902 | { |
|
|
3903 | #if EV_MULTIPLICITY |
|
|
3904 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
3905 | #endif |
|
|
3906 | #if EV_USE_SIGNALFD |
|
|
3907 | if (sigfd >= 0) |
|
|
3908 | { |
|
|
3909 | sigset_t ss; |
|
|
3910 | |
|
|
3911 | sigemptyset (&ss); |
|
|
3912 | sigaddset (&ss, w->signum); |
|
|
3913 | sigdelset (&sigfd_set, w->signum); |
|
|
3914 | |
|
|
3915 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3916 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
576 | } |
3917 | } |
577 | else |
3918 | else |
578 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
3919 | #endif |
579 | |
3920 | signal (w->signum, SIG_DFL); |
580 | event ((W)w, EV_PERIODIC); |
|
|
581 | } |
|
|
582 | } |
|
|
583 | |
|
|
584 | static void |
|
|
585 | periodics_reschedule (ev_tstamp diff) |
|
|
586 | { |
|
|
587 | int i; |
|
|
588 | |
|
|
589 | /* adjust periodics after time jump */ |
|
|
590 | for (i = 0; i < periodiccnt; ++i) |
|
|
591 | { |
3921 | } |
592 | struct ev_periodic *w = periodics [i]; |
|
|
593 | |
3922 | |
594 | if (w->interval) |
3923 | EV_FREQUENT_CHECK; |
|
|
3924 | } |
|
|
3925 | |
|
|
3926 | #endif |
|
|
3927 | |
|
|
3928 | #if EV_CHILD_ENABLE |
|
|
3929 | |
|
|
3930 | void |
|
|
3931 | ev_child_start (EV_P_ ev_child *w) EV_THROW |
|
|
3932 | { |
|
|
3933 | #if EV_MULTIPLICITY |
|
|
3934 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
3935 | #endif |
|
|
3936 | if (expect_false (ev_is_active (w))) |
|
|
3937 | return; |
|
|
3938 | |
|
|
3939 | EV_FREQUENT_CHECK; |
|
|
3940 | |
|
|
3941 | ev_start (EV_A_ (W)w, 1); |
|
|
3942 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
3943 | |
|
|
3944 | EV_FREQUENT_CHECK; |
|
|
3945 | } |
|
|
3946 | |
|
|
3947 | void |
|
|
3948 | ev_child_stop (EV_P_ ev_child *w) EV_THROW |
|
|
3949 | { |
|
|
3950 | clear_pending (EV_A_ (W)w); |
|
|
3951 | if (expect_false (!ev_is_active (w))) |
|
|
3952 | return; |
|
|
3953 | |
|
|
3954 | EV_FREQUENT_CHECK; |
|
|
3955 | |
|
|
3956 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
3957 | ev_stop (EV_A_ (W)w); |
|
|
3958 | |
|
|
3959 | EV_FREQUENT_CHECK; |
|
|
3960 | } |
|
|
3961 | |
|
|
3962 | #endif |
|
|
3963 | |
|
|
3964 | #if EV_STAT_ENABLE |
|
|
3965 | |
|
|
3966 | # ifdef _WIN32 |
|
|
3967 | # undef lstat |
|
|
3968 | # define lstat(a,b) _stati64 (a,b) |
|
|
3969 | # endif |
|
|
3970 | |
|
|
3971 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
3972 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
3973 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
3974 | |
|
|
3975 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
3976 | |
|
|
3977 | #if EV_USE_INOTIFY |
|
|
3978 | |
|
|
3979 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
3980 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
3981 | |
|
|
3982 | static void noinline |
|
|
3983 | infy_add (EV_P_ ev_stat *w) |
|
|
3984 | { |
|
|
3985 | w->wd = inotify_add_watch (fs_fd, w->path, |
|
|
3986 | IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY |
|
|
3987 | | IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO |
|
|
3988 | | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
3989 | |
|
|
3990 | if (w->wd >= 0) |
|
|
3991 | { |
|
|
3992 | struct statfs sfs; |
|
|
3993 | |
|
|
3994 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
3995 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
3996 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
3997 | |
|
|
3998 | if (!fs_2625) |
|
|
3999 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4000 | else if (!statfs (w->path, &sfs) |
|
|
4001 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
4002 | || sfs.f_type == 0x4006 /* fat */ |
|
|
4003 | || sfs.f_type == 0x4d44 /* msdos */ |
|
|
4004 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
4005 | || sfs.f_type == 0x72b6 /* jffs2 */ |
|
|
4006 | || sfs.f_type == 0x858458f6 /* ramfs */ |
|
|
4007 | || sfs.f_type == 0x5346544e /* ntfs */ |
|
|
4008 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
4009 | || sfs.f_type == 0x9123683e /* btrfs */ |
|
|
4010 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
4011 | || sfs.f_type == 0x01021994 /* tmpfs */ |
|
|
4012 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
4013 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
4014 | else |
|
|
4015 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
4016 | } |
|
|
4017 | else |
|
|
4018 | { |
|
|
4019 | /* can't use inotify, continue to stat */ |
|
|
4020 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4021 | |
|
|
4022 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
4023 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
4024 | /* but an efficiency issue only */ |
|
|
4025 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
595 | { |
4026 | { |
596 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
4027 | char path [4096]; |
|
|
4028 | strcpy (path, w->path); |
597 | |
4029 | |
598 | if (fabs (diff) >= 1e-4) |
4030 | do |
599 | { |
4031 | { |
600 | ev_periodic_stop (w); |
4032 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
601 | ev_periodic_start (w); |
4033 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
602 | |
4034 | |
603 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
4035 | char *pend = strrchr (path, '/'); |
|
|
4036 | |
|
|
4037 | if (!pend || pend == path) |
|
|
4038 | break; |
|
|
4039 | |
|
|
4040 | *pend = 0; |
|
|
4041 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
4042 | } |
|
|
4043 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
4044 | } |
|
|
4045 | } |
|
|
4046 | |
|
|
4047 | if (w->wd >= 0) |
|
|
4048 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4049 | |
|
|
4050 | /* now re-arm timer, if required */ |
|
|
4051 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4052 | ev_timer_again (EV_A_ &w->timer); |
|
|
4053 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4054 | } |
|
|
4055 | |
|
|
4056 | static void noinline |
|
|
4057 | infy_del (EV_P_ ev_stat *w) |
|
|
4058 | { |
|
|
4059 | int slot; |
|
|
4060 | int wd = w->wd; |
|
|
4061 | |
|
|
4062 | if (wd < 0) |
|
|
4063 | return; |
|
|
4064 | |
|
|
4065 | w->wd = -2; |
|
|
4066 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
4067 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
4068 | |
|
|
4069 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
4070 | inotify_rm_watch (fs_fd, wd); |
|
|
4071 | } |
|
|
4072 | |
|
|
4073 | static void noinline |
|
|
4074 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
4075 | { |
|
|
4076 | if (slot < 0) |
|
|
4077 | /* overflow, need to check for all hash slots */ |
|
|
4078 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4079 | infy_wd (EV_A_ slot, wd, ev); |
|
|
4080 | else |
|
|
4081 | { |
|
|
4082 | WL w_; |
|
|
4083 | |
|
|
4084 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
4085 | { |
|
|
4086 | ev_stat *w = (ev_stat *)w_; |
|
|
4087 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
4088 | |
|
|
4089 | if (w->wd == wd || wd == -1) |
|
|
4090 | { |
|
|
4091 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
4092 | { |
|
|
4093 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
4094 | w->wd = -1; |
|
|
4095 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4096 | } |
|
|
4097 | |
|
|
4098 | stat_timer_cb (EV_A_ &w->timer, 0); |
604 | } |
4099 | } |
605 | } |
4100 | } |
606 | } |
4101 | } |
607 | } |
4102 | } |
608 | |
4103 | |
609 | static void |
4104 | static void |
610 | time_update (void) |
4105 | infy_cb (EV_P_ ev_io *w, int revents) |
611 | { |
4106 | { |
|
|
4107 | char buf [EV_INOTIFY_BUFSIZE]; |
612 | int i; |
4108 | int ofs; |
|
|
4109 | int len = read (fs_fd, buf, sizeof (buf)); |
613 | |
4110 | |
614 | ev_now = ev_time (); |
4111 | for (ofs = 0; ofs < len; ) |
615 | |
4112 | { |
616 | if (have_monotonic) |
4113 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
4114 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
4115 | ofs += sizeof (struct inotify_event) + ev->len; |
617 | { |
4116 | } |
618 | ev_tstamp odiff = diff; |
4117 | } |
619 | |
4118 | |
620 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
4119 | inline_size void ecb_cold |
|
|
4120 | ev_check_2625 (EV_P) |
|
|
4121 | { |
|
|
4122 | /* kernels < 2.6.25 are borked |
|
|
4123 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
4124 | */ |
|
|
4125 | if (ev_linux_version () < 0x020619) |
|
|
4126 | return; |
|
|
4127 | |
|
|
4128 | fs_2625 = 1; |
|
|
4129 | } |
|
|
4130 | |
|
|
4131 | inline_size int |
|
|
4132 | infy_newfd (void) |
|
|
4133 | { |
|
|
4134 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
4135 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
4136 | if (fd >= 0) |
|
|
4137 | return fd; |
|
|
4138 | #endif |
|
|
4139 | return inotify_init (); |
|
|
4140 | } |
|
|
4141 | |
|
|
4142 | inline_size void |
|
|
4143 | infy_init (EV_P) |
|
|
4144 | { |
|
|
4145 | if (fs_fd != -2) |
|
|
4146 | return; |
|
|
4147 | |
|
|
4148 | fs_fd = -1; |
|
|
4149 | |
|
|
4150 | ev_check_2625 (EV_A); |
|
|
4151 | |
|
|
4152 | fs_fd = infy_newfd (); |
|
|
4153 | |
|
|
4154 | if (fs_fd >= 0) |
|
|
4155 | { |
|
|
4156 | fd_intern (fs_fd); |
|
|
4157 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
4158 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
4159 | ev_io_start (EV_A_ &fs_w); |
|
|
4160 | ev_unref (EV_A); |
|
|
4161 | } |
|
|
4162 | } |
|
|
4163 | |
|
|
4164 | inline_size void |
|
|
4165 | infy_fork (EV_P) |
|
|
4166 | { |
|
|
4167 | int slot; |
|
|
4168 | |
|
|
4169 | if (fs_fd < 0) |
|
|
4170 | return; |
|
|
4171 | |
|
|
4172 | ev_ref (EV_A); |
|
|
4173 | ev_io_stop (EV_A_ &fs_w); |
|
|
4174 | close (fs_fd); |
|
|
4175 | fs_fd = infy_newfd (); |
|
|
4176 | |
|
|
4177 | if (fs_fd >= 0) |
|
|
4178 | { |
|
|
4179 | fd_intern (fs_fd); |
|
|
4180 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
4181 | ev_io_start (EV_A_ &fs_w); |
|
|
4182 | ev_unref (EV_A); |
|
|
4183 | } |
|
|
4184 | |
|
|
4185 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
4186 | { |
|
|
4187 | WL w_ = fs_hash [slot].head; |
|
|
4188 | fs_hash [slot].head = 0; |
|
|
4189 | |
|
|
4190 | while (w_) |
621 | { |
4191 | { |
622 | now = get_clock (); |
4192 | ev_stat *w = (ev_stat *)w_; |
623 | diff = ev_now - now; |
4193 | w_ = w_->next; /* lets us add this watcher */ |
624 | |
4194 | |
625 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
4195 | w->wd = -1; |
626 | return; /* all is well */ |
|
|
627 | |
4196 | |
628 | ev_now = ev_time (); |
4197 | if (fs_fd >= 0) |
|
|
4198 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
4199 | else |
|
|
4200 | { |
|
|
4201 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
4202 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
4203 | ev_timer_again (EV_A_ &w->timer); |
|
|
4204 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
4205 | } |
629 | } |
4206 | } |
630 | |
|
|
631 | periodics_reschedule (diff - odiff); |
|
|
632 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
633 | } |
4207 | } |
|
|
4208 | } |
|
|
4209 | |
|
|
4210 | #endif |
|
|
4211 | |
|
|
4212 | #ifdef _WIN32 |
|
|
4213 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
4214 | #else |
|
|
4215 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
4216 | #endif |
|
|
4217 | |
|
|
4218 | void |
|
|
4219 | ev_stat_stat (EV_P_ ev_stat *w) EV_THROW |
|
|
4220 | { |
|
|
4221 | if (lstat (w->path, &w->attr) < 0) |
|
|
4222 | w->attr.st_nlink = 0; |
|
|
4223 | else if (!w->attr.st_nlink) |
|
|
4224 | w->attr.st_nlink = 1; |
|
|
4225 | } |
|
|
4226 | |
|
|
4227 | static void noinline |
|
|
4228 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
4229 | { |
|
|
4230 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
4231 | |
|
|
4232 | ev_statdata prev = w->attr; |
|
|
4233 | ev_stat_stat (EV_A_ w); |
|
|
4234 | |
|
|
4235 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
4236 | if ( |
|
|
4237 | prev.st_dev != w->attr.st_dev |
|
|
4238 | || prev.st_ino != w->attr.st_ino |
|
|
4239 | || prev.st_mode != w->attr.st_mode |
|
|
4240 | || prev.st_nlink != w->attr.st_nlink |
|
|
4241 | || prev.st_uid != w->attr.st_uid |
|
|
4242 | || prev.st_gid != w->attr.st_gid |
|
|
4243 | || prev.st_rdev != w->attr.st_rdev |
|
|
4244 | || prev.st_size != w->attr.st_size |
|
|
4245 | || prev.st_atime != w->attr.st_atime |
|
|
4246 | || prev.st_mtime != w->attr.st_mtime |
|
|
4247 | || prev.st_ctime != w->attr.st_ctime |
|
|
4248 | ) { |
|
|
4249 | /* we only update w->prev on actual differences */ |
|
|
4250 | /* in case we test more often than invoke the callback, */ |
|
|
4251 | /* to ensure that prev is always different to attr */ |
|
|
4252 | w->prev = prev; |
|
|
4253 | |
|
|
4254 | #if EV_USE_INOTIFY |
|
|
4255 | if (fs_fd >= 0) |
|
|
4256 | { |
|
|
4257 | infy_del (EV_A_ w); |
|
|
4258 | infy_add (EV_A_ w); |
|
|
4259 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
4260 | } |
|
|
4261 | #endif |
|
|
4262 | |
|
|
4263 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
4264 | } |
|
|
4265 | } |
|
|
4266 | |
|
|
4267 | void |
|
|
4268 | ev_stat_start (EV_P_ ev_stat *w) EV_THROW |
|
|
4269 | { |
|
|
4270 | if (expect_false (ev_is_active (w))) |
|
|
4271 | return; |
|
|
4272 | |
|
|
4273 | ev_stat_stat (EV_A_ w); |
|
|
4274 | |
|
|
4275 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
4276 | w->interval = MIN_STAT_INTERVAL; |
|
|
4277 | |
|
|
4278 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
4279 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
4280 | |
|
|
4281 | #if EV_USE_INOTIFY |
|
|
4282 | infy_init (EV_A); |
|
|
4283 | |
|
|
4284 | if (fs_fd >= 0) |
|
|
4285 | infy_add (EV_A_ w); |
634 | else |
4286 | else |
|
|
4287 | #endif |
|
|
4288 | { |
|
|
4289 | ev_timer_again (EV_A_ &w->timer); |
|
|
4290 | ev_unref (EV_A); |
635 | { |
4291 | } |
636 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
4292 | |
|
|
4293 | ev_start (EV_A_ (W)w, 1); |
|
|
4294 | |
|
|
4295 | EV_FREQUENT_CHECK; |
|
|
4296 | } |
|
|
4297 | |
|
|
4298 | void |
|
|
4299 | ev_stat_stop (EV_P_ ev_stat *w) EV_THROW |
|
|
4300 | { |
|
|
4301 | clear_pending (EV_A_ (W)w); |
|
|
4302 | if (expect_false (!ev_is_active (w))) |
|
|
4303 | return; |
|
|
4304 | |
|
|
4305 | EV_FREQUENT_CHECK; |
|
|
4306 | |
|
|
4307 | #if EV_USE_INOTIFY |
|
|
4308 | infy_del (EV_A_ w); |
|
|
4309 | #endif |
|
|
4310 | |
|
|
4311 | if (ev_is_active (&w->timer)) |
|
|
4312 | { |
|
|
4313 | ev_ref (EV_A); |
|
|
4314 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4315 | } |
|
|
4316 | |
|
|
4317 | ev_stop (EV_A_ (W)w); |
|
|
4318 | |
|
|
4319 | EV_FREQUENT_CHECK; |
|
|
4320 | } |
|
|
4321 | #endif |
|
|
4322 | |
|
|
4323 | #if EV_IDLE_ENABLE |
|
|
4324 | void |
|
|
4325 | ev_idle_start (EV_P_ ev_idle *w) EV_THROW |
|
|
4326 | { |
|
|
4327 | if (expect_false (ev_is_active (w))) |
|
|
4328 | return; |
|
|
4329 | |
|
|
4330 | pri_adjust (EV_A_ (W)w); |
|
|
4331 | |
|
|
4332 | EV_FREQUENT_CHECK; |
|
|
4333 | |
|
|
4334 | { |
|
|
4335 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
4336 | |
|
|
4337 | ++idleall; |
|
|
4338 | ev_start (EV_A_ (W)w, active); |
|
|
4339 | |
|
|
4340 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
4341 | idles [ABSPRI (w)][active - 1] = w; |
|
|
4342 | } |
|
|
4343 | |
|
|
4344 | EV_FREQUENT_CHECK; |
|
|
4345 | } |
|
|
4346 | |
|
|
4347 | void |
|
|
4348 | ev_idle_stop (EV_P_ ev_idle *w) EV_THROW |
|
|
4349 | { |
|
|
4350 | clear_pending (EV_A_ (W)w); |
|
|
4351 | if (expect_false (!ev_is_active (w))) |
|
|
4352 | return; |
|
|
4353 | |
|
|
4354 | EV_FREQUENT_CHECK; |
|
|
4355 | |
|
|
4356 | { |
|
|
4357 | int active = ev_active (w); |
|
|
4358 | |
|
|
4359 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
4360 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
4361 | |
|
|
4362 | ev_stop (EV_A_ (W)w); |
|
|
4363 | --idleall; |
|
|
4364 | } |
|
|
4365 | |
|
|
4366 | EV_FREQUENT_CHECK; |
|
|
4367 | } |
|
|
4368 | #endif |
|
|
4369 | |
|
|
4370 | #if EV_PREPARE_ENABLE |
|
|
4371 | void |
|
|
4372 | ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW |
|
|
4373 | { |
|
|
4374 | if (expect_false (ev_is_active (w))) |
|
|
4375 | return; |
|
|
4376 | |
|
|
4377 | EV_FREQUENT_CHECK; |
|
|
4378 | |
|
|
4379 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
4380 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
4381 | prepares [preparecnt - 1] = w; |
|
|
4382 | |
|
|
4383 | EV_FREQUENT_CHECK; |
|
|
4384 | } |
|
|
4385 | |
|
|
4386 | void |
|
|
4387 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW |
|
|
4388 | { |
|
|
4389 | clear_pending (EV_A_ (W)w); |
|
|
4390 | if (expect_false (!ev_is_active (w))) |
|
|
4391 | return; |
|
|
4392 | |
|
|
4393 | EV_FREQUENT_CHECK; |
|
|
4394 | |
|
|
4395 | { |
|
|
4396 | int active = ev_active (w); |
|
|
4397 | |
|
|
4398 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
4399 | ev_active (prepares [active - 1]) = active; |
|
|
4400 | } |
|
|
4401 | |
|
|
4402 | ev_stop (EV_A_ (W)w); |
|
|
4403 | |
|
|
4404 | EV_FREQUENT_CHECK; |
|
|
4405 | } |
|
|
4406 | #endif |
|
|
4407 | |
|
|
4408 | #if EV_CHECK_ENABLE |
|
|
4409 | void |
|
|
4410 | ev_check_start (EV_P_ ev_check *w) EV_THROW |
|
|
4411 | { |
|
|
4412 | if (expect_false (ev_is_active (w))) |
|
|
4413 | return; |
|
|
4414 | |
|
|
4415 | EV_FREQUENT_CHECK; |
|
|
4416 | |
|
|
4417 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
4418 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
4419 | checks [checkcnt - 1] = w; |
|
|
4420 | |
|
|
4421 | EV_FREQUENT_CHECK; |
|
|
4422 | } |
|
|
4423 | |
|
|
4424 | void |
|
|
4425 | ev_check_stop (EV_P_ ev_check *w) EV_THROW |
|
|
4426 | { |
|
|
4427 | clear_pending (EV_A_ (W)w); |
|
|
4428 | if (expect_false (!ev_is_active (w))) |
|
|
4429 | return; |
|
|
4430 | |
|
|
4431 | EV_FREQUENT_CHECK; |
|
|
4432 | |
|
|
4433 | { |
|
|
4434 | int active = ev_active (w); |
|
|
4435 | |
|
|
4436 | checks [active - 1] = checks [--checkcnt]; |
|
|
4437 | ev_active (checks [active - 1]) = active; |
|
|
4438 | } |
|
|
4439 | |
|
|
4440 | ev_stop (EV_A_ (W)w); |
|
|
4441 | |
|
|
4442 | EV_FREQUENT_CHECK; |
|
|
4443 | } |
|
|
4444 | #endif |
|
|
4445 | |
|
|
4446 | #if EV_EMBED_ENABLE |
|
|
4447 | void noinline |
|
|
4448 | ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW |
|
|
4449 | { |
|
|
4450 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4451 | } |
|
|
4452 | |
|
|
4453 | static void |
|
|
4454 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
4455 | { |
|
|
4456 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
4457 | |
|
|
4458 | if (ev_cb (w)) |
|
|
4459 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
4460 | else |
|
|
4461 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4462 | } |
|
|
4463 | |
|
|
4464 | static void |
|
|
4465 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
4466 | { |
|
|
4467 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
4468 | |
|
|
4469 | { |
|
|
4470 | EV_P = w->other; |
|
|
4471 | |
|
|
4472 | while (fdchangecnt) |
637 | { |
4473 | { |
638 | periodics_reschedule (ev_now - now); |
4474 | fd_reify (EV_A); |
639 | |
4475 | ev_run (EV_A_ EVRUN_NOWAIT); |
640 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
641 | for (i = 0; i < timercnt; ++i) |
|
|
642 | timers [i]->at += diff; |
|
|
643 | } |
4476 | } |
644 | |
|
|
645 | now = ev_now; |
|
|
646 | } |
4477 | } |
647 | } |
4478 | } |
648 | |
4479 | |
649 | int ev_loop_done; |
4480 | static void |
650 | |
4481 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
651 | void ev_loop (int flags) |
|
|
652 | { |
4482 | { |
653 | double block; |
4483 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
654 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
655 | |
4484 | |
656 | do |
4485 | ev_embed_stop (EV_A_ w); |
|
|
4486 | |
657 | { |
4487 | { |
658 | /* queue check watchers (and execute them) */ |
4488 | EV_P = w->other; |
659 | if (preparecnt) |
|
|
660 | { |
|
|
661 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
662 | call_pending (); |
|
|
663 | } |
|
|
664 | |
4489 | |
665 | /* update fd-related kernel structures */ |
4490 | ev_loop_fork (EV_A); |
666 | fd_reify (); |
4491 | ev_run (EV_A_ EVRUN_NOWAIT); |
667 | |
|
|
668 | /* calculate blocking time */ |
|
|
669 | |
|
|
670 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
671 | always have timers, we just calculate it always */ |
|
|
672 | ev_now = ev_time (); |
|
|
673 | |
|
|
674 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
675 | block = 0.; |
|
|
676 | else |
|
|
677 | { |
|
|
678 | block = MAX_BLOCKTIME; |
|
|
679 | |
|
|
680 | if (timercnt) |
|
|
681 | { |
|
|
682 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
|
|
683 | if (block > to) block = to; |
|
|
684 | } |
|
|
685 | |
|
|
686 | if (periodiccnt) |
|
|
687 | { |
|
|
688 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
|
|
689 | if (block > to) block = to; |
|
|
690 | } |
|
|
691 | |
|
|
692 | if (block < 0.) block = 0.; |
|
|
693 | } |
|
|
694 | |
|
|
695 | method_poll (block); |
|
|
696 | |
|
|
697 | /* update ev_now, do magic */ |
|
|
698 | time_update (); |
|
|
699 | |
|
|
700 | /* queue pending timers and reschedule them */ |
|
|
701 | timers_reify (); /* relative timers called last */ |
|
|
702 | periodics_reify (); /* absolute timers called first */ |
|
|
703 | |
|
|
704 | /* queue idle watchers unless io or timers are pending */ |
|
|
705 | if (!pendingcnt) |
|
|
706 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
|
|
707 | |
|
|
708 | /* queue check watchers, to be executed first */ |
|
|
709 | if (checkcnt) |
|
|
710 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
711 | |
|
|
712 | call_pending (); |
|
|
713 | } |
4492 | } |
714 | while (!ev_loop_done); |
|
|
715 | |
4493 | |
716 | if (ev_loop_done != 2) |
4494 | ev_embed_start (EV_A_ w); |
717 | ev_loop_done = 0; |
|
|
718 | } |
4495 | } |
|
|
4496 | |
|
|
4497 | #if 0 |
|
|
4498 | static void |
|
|
4499 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
4500 | { |
|
|
4501 | ev_idle_stop (EV_A_ idle); |
|
|
4502 | } |
|
|
4503 | #endif |
|
|
4504 | |
|
|
4505 | void |
|
|
4506 | ev_embed_start (EV_P_ ev_embed *w) EV_THROW |
|
|
4507 | { |
|
|
4508 | if (expect_false (ev_is_active (w))) |
|
|
4509 | return; |
|
|
4510 | |
|
|
4511 | { |
|
|
4512 | EV_P = w->other; |
|
|
4513 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
4514 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
4515 | } |
|
|
4516 | |
|
|
4517 | EV_FREQUENT_CHECK; |
|
|
4518 | |
|
|
4519 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
4520 | ev_io_start (EV_A_ &w->io); |
|
|
4521 | |
|
|
4522 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
4523 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
4524 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
4525 | |
|
|
4526 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4527 | ev_fork_start (EV_A_ &w->fork); |
|
|
4528 | |
|
|
4529 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
4530 | |
|
|
4531 | ev_start (EV_A_ (W)w, 1); |
|
|
4532 | |
|
|
4533 | EV_FREQUENT_CHECK; |
|
|
4534 | } |
|
|
4535 | |
|
|
4536 | void |
|
|
4537 | ev_embed_stop (EV_P_ ev_embed *w) EV_THROW |
|
|
4538 | { |
|
|
4539 | clear_pending (EV_A_ (W)w); |
|
|
4540 | if (expect_false (!ev_is_active (w))) |
|
|
4541 | return; |
|
|
4542 | |
|
|
4543 | EV_FREQUENT_CHECK; |
|
|
4544 | |
|
|
4545 | ev_io_stop (EV_A_ &w->io); |
|
|
4546 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4547 | ev_fork_stop (EV_A_ &w->fork); |
|
|
4548 | |
|
|
4549 | ev_stop (EV_A_ (W)w); |
|
|
4550 | |
|
|
4551 | EV_FREQUENT_CHECK; |
|
|
4552 | } |
|
|
4553 | #endif |
|
|
4554 | |
|
|
4555 | #if EV_FORK_ENABLE |
|
|
4556 | void |
|
|
4557 | ev_fork_start (EV_P_ ev_fork *w) EV_THROW |
|
|
4558 | { |
|
|
4559 | if (expect_false (ev_is_active (w))) |
|
|
4560 | return; |
|
|
4561 | |
|
|
4562 | EV_FREQUENT_CHECK; |
|
|
4563 | |
|
|
4564 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
4565 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
4566 | forks [forkcnt - 1] = w; |
|
|
4567 | |
|
|
4568 | EV_FREQUENT_CHECK; |
|
|
4569 | } |
|
|
4570 | |
|
|
4571 | void |
|
|
4572 | ev_fork_stop (EV_P_ ev_fork *w) EV_THROW |
|
|
4573 | { |
|
|
4574 | clear_pending (EV_A_ (W)w); |
|
|
4575 | if (expect_false (!ev_is_active (w))) |
|
|
4576 | return; |
|
|
4577 | |
|
|
4578 | EV_FREQUENT_CHECK; |
|
|
4579 | |
|
|
4580 | { |
|
|
4581 | int active = ev_active (w); |
|
|
4582 | |
|
|
4583 | forks [active - 1] = forks [--forkcnt]; |
|
|
4584 | ev_active (forks [active - 1]) = active; |
|
|
4585 | } |
|
|
4586 | |
|
|
4587 | ev_stop (EV_A_ (W)w); |
|
|
4588 | |
|
|
4589 | EV_FREQUENT_CHECK; |
|
|
4590 | } |
|
|
4591 | #endif |
|
|
4592 | |
|
|
4593 | #if EV_CLEANUP_ENABLE |
|
|
4594 | void |
|
|
4595 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4596 | { |
|
|
4597 | if (expect_false (ev_is_active (w))) |
|
|
4598 | return; |
|
|
4599 | |
|
|
4600 | EV_FREQUENT_CHECK; |
|
|
4601 | |
|
|
4602 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4603 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4604 | cleanups [cleanupcnt - 1] = w; |
|
|
4605 | |
|
|
4606 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4607 | ev_unref (EV_A); |
|
|
4608 | EV_FREQUENT_CHECK; |
|
|
4609 | } |
|
|
4610 | |
|
|
4611 | void |
|
|
4612 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4613 | { |
|
|
4614 | clear_pending (EV_A_ (W)w); |
|
|
4615 | if (expect_false (!ev_is_active (w))) |
|
|
4616 | return; |
|
|
4617 | |
|
|
4618 | EV_FREQUENT_CHECK; |
|
|
4619 | ev_ref (EV_A); |
|
|
4620 | |
|
|
4621 | { |
|
|
4622 | int active = ev_active (w); |
|
|
4623 | |
|
|
4624 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4625 | ev_active (cleanups [active - 1]) = active; |
|
|
4626 | } |
|
|
4627 | |
|
|
4628 | ev_stop (EV_A_ (W)w); |
|
|
4629 | |
|
|
4630 | EV_FREQUENT_CHECK; |
|
|
4631 | } |
|
|
4632 | #endif |
|
|
4633 | |
|
|
4634 | #if EV_ASYNC_ENABLE |
|
|
4635 | void |
|
|
4636 | ev_async_start (EV_P_ ev_async *w) EV_THROW |
|
|
4637 | { |
|
|
4638 | if (expect_false (ev_is_active (w))) |
|
|
4639 | return; |
|
|
4640 | |
|
|
4641 | w->sent = 0; |
|
|
4642 | |
|
|
4643 | evpipe_init (EV_A); |
|
|
4644 | |
|
|
4645 | EV_FREQUENT_CHECK; |
|
|
4646 | |
|
|
4647 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4648 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
4649 | asyncs [asynccnt - 1] = w; |
|
|
4650 | |
|
|
4651 | EV_FREQUENT_CHECK; |
|
|
4652 | } |
|
|
4653 | |
|
|
4654 | void |
|
|
4655 | ev_async_stop (EV_P_ ev_async *w) EV_THROW |
|
|
4656 | { |
|
|
4657 | clear_pending (EV_A_ (W)w); |
|
|
4658 | if (expect_false (!ev_is_active (w))) |
|
|
4659 | return; |
|
|
4660 | |
|
|
4661 | EV_FREQUENT_CHECK; |
|
|
4662 | |
|
|
4663 | { |
|
|
4664 | int active = ev_active (w); |
|
|
4665 | |
|
|
4666 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
4667 | ev_active (asyncs [active - 1]) = active; |
|
|
4668 | } |
|
|
4669 | |
|
|
4670 | ev_stop (EV_A_ (W)w); |
|
|
4671 | |
|
|
4672 | EV_FREQUENT_CHECK; |
|
|
4673 | } |
|
|
4674 | |
|
|
4675 | void |
|
|
4676 | ev_async_send (EV_P_ ev_async *w) EV_THROW |
|
|
4677 | { |
|
|
4678 | w->sent = 1; |
|
|
4679 | evpipe_write (EV_A_ &async_pending); |
|
|
4680 | } |
|
|
4681 | #endif |
719 | |
4682 | |
720 | /*****************************************************************************/ |
4683 | /*****************************************************************************/ |
721 | |
4684 | |
722 | static void |
|
|
723 | wlist_add (WL *head, WL elem) |
|
|
724 | { |
|
|
725 | elem->next = *head; |
|
|
726 | *head = elem; |
|
|
727 | } |
|
|
728 | |
|
|
729 | static void |
|
|
730 | wlist_del (WL *head, WL elem) |
|
|
731 | { |
|
|
732 | while (*head) |
|
|
733 | { |
|
|
734 | if (*head == elem) |
|
|
735 | { |
|
|
736 | *head = elem->next; |
|
|
737 | return; |
|
|
738 | } |
|
|
739 | |
|
|
740 | head = &(*head)->next; |
|
|
741 | } |
|
|
742 | } |
|
|
743 | |
|
|
744 | static void |
|
|
745 | ev_clear_pending (W w) |
|
|
746 | { |
|
|
747 | if (w->pending) |
|
|
748 | { |
|
|
749 | pendings [w->pending - 1].w = 0; |
|
|
750 | w->pending = 0; |
|
|
751 | } |
|
|
752 | } |
|
|
753 | |
|
|
754 | static void |
|
|
755 | ev_start (W w, int active) |
|
|
756 | { |
|
|
757 | w->active = active; |
|
|
758 | } |
|
|
759 | |
|
|
760 | static void |
|
|
761 | ev_stop (W w) |
|
|
762 | { |
|
|
763 | w->active = 0; |
|
|
764 | } |
|
|
765 | |
|
|
766 | /*****************************************************************************/ |
|
|
767 | |
|
|
768 | void |
|
|
769 | ev_io_start (struct ev_io *w) |
|
|
770 | { |
|
|
771 | int fd = w->fd; |
|
|
772 | |
|
|
773 | if (ev_is_active (w)) |
|
|
774 | return; |
|
|
775 | |
|
|
776 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
777 | |
|
|
778 | ev_start ((W)w, 1); |
|
|
779 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
780 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
781 | |
|
|
782 | fd_change (fd); |
|
|
783 | } |
|
|
784 | |
|
|
785 | void |
|
|
786 | ev_io_stop (struct ev_io *w) |
|
|
787 | { |
|
|
788 | ev_clear_pending ((W)w); |
|
|
789 | if (!ev_is_active (w)) |
|
|
790 | return; |
|
|
791 | |
|
|
792 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
793 | ev_stop ((W)w); |
|
|
794 | |
|
|
795 | fd_change (w->fd); |
|
|
796 | } |
|
|
797 | |
|
|
798 | void |
|
|
799 | ev_timer_start (struct ev_timer *w) |
|
|
800 | { |
|
|
801 | if (ev_is_active (w)) |
|
|
802 | return; |
|
|
803 | |
|
|
804 | w->at += now; |
|
|
805 | |
|
|
806 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
807 | |
|
|
808 | ev_start ((W)w, ++timercnt); |
|
|
809 | array_needsize (timers, timermax, timercnt, ); |
|
|
810 | timers [timercnt - 1] = w; |
|
|
811 | upheap ((WT *)timers, timercnt - 1); |
|
|
812 | } |
|
|
813 | |
|
|
814 | void |
|
|
815 | ev_timer_stop (struct ev_timer *w) |
|
|
816 | { |
|
|
817 | ev_clear_pending ((W)w); |
|
|
818 | if (!ev_is_active (w)) |
|
|
819 | return; |
|
|
820 | |
|
|
821 | if (w->active < timercnt--) |
|
|
822 | { |
|
|
823 | timers [w->active - 1] = timers [timercnt]; |
|
|
824 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
825 | } |
|
|
826 | |
|
|
827 | w->at = w->repeat; |
|
|
828 | |
|
|
829 | ev_stop ((W)w); |
|
|
830 | } |
|
|
831 | |
|
|
832 | void |
|
|
833 | ev_timer_again (struct ev_timer *w) |
|
|
834 | { |
|
|
835 | if (ev_is_active (w)) |
|
|
836 | { |
|
|
837 | if (w->repeat) |
|
|
838 | { |
|
|
839 | w->at = now + w->repeat; |
|
|
840 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
841 | } |
|
|
842 | else |
|
|
843 | ev_timer_stop (w); |
|
|
844 | } |
|
|
845 | else if (w->repeat) |
|
|
846 | ev_timer_start (w); |
|
|
847 | } |
|
|
848 | |
|
|
849 | void |
|
|
850 | ev_periodic_start (struct ev_periodic *w) |
|
|
851 | { |
|
|
852 | if (ev_is_active (w)) |
|
|
853 | return; |
|
|
854 | |
|
|
855 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
856 | |
|
|
857 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
858 | if (w->interval) |
|
|
859 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
860 | |
|
|
861 | ev_start ((W)w, ++periodiccnt); |
|
|
862 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
863 | periodics [periodiccnt - 1] = w; |
|
|
864 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
865 | } |
|
|
866 | |
|
|
867 | void |
|
|
868 | ev_periodic_stop (struct ev_periodic *w) |
|
|
869 | { |
|
|
870 | ev_clear_pending ((W)w); |
|
|
871 | if (!ev_is_active (w)) |
|
|
872 | return; |
|
|
873 | |
|
|
874 | if (w->active < periodiccnt--) |
|
|
875 | { |
|
|
876 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
877 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
878 | } |
|
|
879 | |
|
|
880 | ev_stop ((W)w); |
|
|
881 | } |
|
|
882 | |
|
|
883 | void |
|
|
884 | ev_signal_start (struct ev_signal *w) |
|
|
885 | { |
|
|
886 | if (ev_is_active (w)) |
|
|
887 | return; |
|
|
888 | |
|
|
889 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
890 | |
|
|
891 | ev_start ((W)w, 1); |
|
|
892 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
893 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
894 | |
|
|
895 | if (!w->next) |
|
|
896 | { |
|
|
897 | struct sigaction sa; |
|
|
898 | sa.sa_handler = sighandler; |
|
|
899 | sigfillset (&sa.sa_mask); |
|
|
900 | sa.sa_flags = 0; |
|
|
901 | sigaction (w->signum, &sa, 0); |
|
|
902 | } |
|
|
903 | } |
|
|
904 | |
|
|
905 | void |
|
|
906 | ev_signal_stop (struct ev_signal *w) |
|
|
907 | { |
|
|
908 | ev_clear_pending ((W)w); |
|
|
909 | if (!ev_is_active (w)) |
|
|
910 | return; |
|
|
911 | |
|
|
912 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
913 | ev_stop ((W)w); |
|
|
914 | |
|
|
915 | if (!signals [w->signum - 1].head) |
|
|
916 | signal (w->signum, SIG_DFL); |
|
|
917 | } |
|
|
918 | |
|
|
919 | void |
|
|
920 | ev_idle_start (struct ev_idle *w) |
|
|
921 | { |
|
|
922 | if (ev_is_active (w)) |
|
|
923 | return; |
|
|
924 | |
|
|
925 | ev_start ((W)w, ++idlecnt); |
|
|
926 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
927 | idles [idlecnt - 1] = w; |
|
|
928 | } |
|
|
929 | |
|
|
930 | void |
|
|
931 | ev_idle_stop (struct ev_idle *w) |
|
|
932 | { |
|
|
933 | ev_clear_pending ((W)w); |
|
|
934 | if (ev_is_active (w)) |
|
|
935 | return; |
|
|
936 | |
|
|
937 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
938 | ev_stop ((W)w); |
|
|
939 | } |
|
|
940 | |
|
|
941 | void |
|
|
942 | ev_prepare_start (struct ev_prepare *w) |
|
|
943 | { |
|
|
944 | if (ev_is_active (w)) |
|
|
945 | return; |
|
|
946 | |
|
|
947 | ev_start ((W)w, ++preparecnt); |
|
|
948 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
949 | prepares [preparecnt - 1] = w; |
|
|
950 | } |
|
|
951 | |
|
|
952 | void |
|
|
953 | ev_prepare_stop (struct ev_prepare *w) |
|
|
954 | { |
|
|
955 | ev_clear_pending ((W)w); |
|
|
956 | if (ev_is_active (w)) |
|
|
957 | return; |
|
|
958 | |
|
|
959 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
960 | ev_stop ((W)w); |
|
|
961 | } |
|
|
962 | |
|
|
963 | void |
|
|
964 | ev_check_start (struct ev_check *w) |
|
|
965 | { |
|
|
966 | if (ev_is_active (w)) |
|
|
967 | return; |
|
|
968 | |
|
|
969 | ev_start ((W)w, ++checkcnt); |
|
|
970 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
971 | checks [checkcnt - 1] = w; |
|
|
972 | } |
|
|
973 | |
|
|
974 | void |
|
|
975 | ev_check_stop (struct ev_check *w) |
|
|
976 | { |
|
|
977 | ev_clear_pending ((W)w); |
|
|
978 | if (ev_is_active (w)) |
|
|
979 | return; |
|
|
980 | |
|
|
981 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
982 | ev_stop ((W)w); |
|
|
983 | } |
|
|
984 | |
|
|
985 | void |
|
|
986 | ev_child_start (struct ev_child *w) |
|
|
987 | { |
|
|
988 | if (ev_is_active (w)) |
|
|
989 | return; |
|
|
990 | |
|
|
991 | ev_start ((W)w, 1); |
|
|
992 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
993 | } |
|
|
994 | |
|
|
995 | void |
|
|
996 | ev_child_stop (struct ev_child *w) |
|
|
997 | { |
|
|
998 | ev_clear_pending ((W)w); |
|
|
999 | if (ev_is_active (w)) |
|
|
1000 | return; |
|
|
1001 | |
|
|
1002 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1003 | ev_stop ((W)w); |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | /*****************************************************************************/ |
|
|
1007 | |
|
|
1008 | struct ev_once |
4685 | struct ev_once |
1009 | { |
4686 | { |
1010 | struct ev_io io; |
4687 | ev_io io; |
1011 | struct ev_timer to; |
4688 | ev_timer to; |
1012 | void (*cb)(int revents, void *arg); |
4689 | void (*cb)(int revents, void *arg); |
1013 | void *arg; |
4690 | void *arg; |
1014 | }; |
4691 | }; |
1015 | |
4692 | |
1016 | static void |
4693 | static void |
1017 | once_cb (struct ev_once *once, int revents) |
4694 | once_cb (EV_P_ struct ev_once *once, int revents) |
1018 | { |
4695 | { |
1019 | void (*cb)(int revents, void *arg) = once->cb; |
4696 | void (*cb)(int revents, void *arg) = once->cb; |
1020 | void *arg = once->arg; |
4697 | void *arg = once->arg; |
1021 | |
4698 | |
1022 | ev_io_stop (&once->io); |
4699 | ev_io_stop (EV_A_ &once->io); |
1023 | ev_timer_stop (&once->to); |
4700 | ev_timer_stop (EV_A_ &once->to); |
1024 | free (once); |
4701 | ev_free (once); |
1025 | |
4702 | |
1026 | cb (revents, arg); |
4703 | cb (revents, arg); |
1027 | } |
4704 | } |
1028 | |
4705 | |
1029 | static void |
4706 | static void |
1030 | once_cb_io (struct ev_io *w, int revents) |
4707 | once_cb_io (EV_P_ ev_io *w, int revents) |
1031 | { |
4708 | { |
1032 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
4709 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
4710 | |
|
|
4711 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1033 | } |
4712 | } |
1034 | |
4713 | |
1035 | static void |
4714 | static void |
1036 | once_cb_to (struct ev_timer *w, int revents) |
4715 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1037 | { |
4716 | { |
1038 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
4717 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
4718 | |
|
|
4719 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1039 | } |
4720 | } |
1040 | |
4721 | |
1041 | void |
4722 | void |
1042 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
4723 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW |
1043 | { |
4724 | { |
1044 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
4725 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1045 | |
4726 | |
1046 | if (!once) |
4727 | if (expect_false (!once)) |
|
|
4728 | { |
1047 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
4729 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1048 | else |
4730 | return; |
1049 | { |
4731 | } |
|
|
4732 | |
1050 | once->cb = cb; |
4733 | once->cb = cb; |
1051 | once->arg = arg; |
4734 | once->arg = arg; |
1052 | |
4735 | |
1053 | ev_watcher_init (&once->io, once_cb_io); |
4736 | ev_init (&once->io, once_cb_io); |
1054 | if (fd >= 0) |
4737 | if (fd >= 0) |
|
|
4738 | { |
|
|
4739 | ev_io_set (&once->io, fd, events); |
|
|
4740 | ev_io_start (EV_A_ &once->io); |
|
|
4741 | } |
|
|
4742 | |
|
|
4743 | ev_init (&once->to, once_cb_to); |
|
|
4744 | if (timeout >= 0.) |
|
|
4745 | { |
|
|
4746 | ev_timer_set (&once->to, timeout, 0.); |
|
|
4747 | ev_timer_start (EV_A_ &once->to); |
|
|
4748 | } |
|
|
4749 | } |
|
|
4750 | |
|
|
4751 | /*****************************************************************************/ |
|
|
4752 | |
|
|
4753 | #if EV_WALK_ENABLE |
|
|
4754 | void ecb_cold |
|
|
4755 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW |
|
|
4756 | { |
|
|
4757 | int i, j; |
|
|
4758 | ev_watcher_list *wl, *wn; |
|
|
4759 | |
|
|
4760 | if (types & (EV_IO | EV_EMBED)) |
|
|
4761 | for (i = 0; i < anfdmax; ++i) |
|
|
4762 | for (wl = anfds [i].head; wl; ) |
1055 | { |
4763 | { |
1056 | ev_io_set (&once->io, fd, events); |
4764 | wn = wl->next; |
1057 | ev_io_start (&once->io); |
4765 | |
|
|
4766 | #if EV_EMBED_ENABLE |
|
|
4767 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
4768 | { |
|
|
4769 | if (types & EV_EMBED) |
|
|
4770 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
4771 | } |
|
|
4772 | else |
|
|
4773 | #endif |
|
|
4774 | #if EV_USE_INOTIFY |
|
|
4775 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
4776 | ; |
|
|
4777 | else |
|
|
4778 | #endif |
|
|
4779 | if ((ev_io *)wl != &pipe_w) |
|
|
4780 | if (types & EV_IO) |
|
|
4781 | cb (EV_A_ EV_IO, wl); |
|
|
4782 | |
|
|
4783 | wl = wn; |
1058 | } |
4784 | } |
1059 | |
4785 | |
1060 | ev_watcher_init (&once->to, once_cb_to); |
4786 | if (types & (EV_TIMER | EV_STAT)) |
1061 | if (timeout >= 0.) |
4787 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
4788 | #if EV_STAT_ENABLE |
|
|
4789 | /*TODO: timer is not always active*/ |
|
|
4790 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1062 | { |
4791 | { |
1063 | ev_timer_set (&once->to, timeout, 0.); |
4792 | if (types & EV_STAT) |
1064 | ev_timer_start (&once->to); |
4793 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1065 | } |
4794 | } |
1066 | } |
4795 | else |
1067 | } |
4796 | #endif |
|
|
4797 | if (types & EV_TIMER) |
|
|
4798 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1068 | |
4799 | |
1069 | /*****************************************************************************/ |
4800 | #if EV_PERIODIC_ENABLE |
|
|
4801 | if (types & EV_PERIODIC) |
|
|
4802 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
4803 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
4804 | #endif |
1070 | |
4805 | |
1071 | #if 0 |
4806 | #if EV_IDLE_ENABLE |
|
|
4807 | if (types & EV_IDLE) |
|
|
4808 | for (j = NUMPRI; j--; ) |
|
|
4809 | for (i = idlecnt [j]; i--; ) |
|
|
4810 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
4811 | #endif |
1072 | |
4812 | |
1073 | struct ev_io wio; |
4813 | #if EV_FORK_ENABLE |
|
|
4814 | if (types & EV_FORK) |
|
|
4815 | for (i = forkcnt; i--; ) |
|
|
4816 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
4817 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
4818 | #endif |
1074 | |
4819 | |
1075 | static void |
4820 | #if EV_ASYNC_ENABLE |
1076 | sin_cb (struct ev_io *w, int revents) |
4821 | if (types & EV_ASYNC) |
1077 | { |
4822 | for (i = asynccnt; i--; ) |
1078 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
4823 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1079 | } |
4824 | #endif |
1080 | |
4825 | |
1081 | static void |
4826 | #if EV_PREPARE_ENABLE |
1082 | ocb (struct ev_timer *w, int revents) |
4827 | if (types & EV_PREPARE) |
1083 | { |
4828 | for (i = preparecnt; i--; ) |
1084 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
4829 | # if EV_EMBED_ENABLE |
1085 | ev_timer_stop (w); |
4830 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1086 | ev_timer_start (w); |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | static void |
|
|
1090 | scb (struct ev_signal *w, int revents) |
|
|
1091 | { |
|
|
1092 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1093 | ev_io_stop (&wio); |
|
|
1094 | ev_io_start (&wio); |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | static void |
|
|
1098 | gcb (struct ev_signal *w, int revents) |
|
|
1099 | { |
|
|
1100 | fprintf (stderr, "generic %x\n", revents); |
|
|
1101 | |
|
|
1102 | } |
|
|
1103 | |
|
|
1104 | int main (void) |
|
|
1105 | { |
|
|
1106 | ev_init (0); |
|
|
1107 | |
|
|
1108 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1109 | ev_io_start (&wio); |
|
|
1110 | |
|
|
1111 | struct ev_timer t[10000]; |
|
|
1112 | |
|
|
1113 | #if 0 |
|
|
1114 | int i; |
|
|
1115 | for (i = 0; i < 10000; ++i) |
|
|
1116 | { |
|
|
1117 | struct ev_timer *w = t + i; |
|
|
1118 | ev_watcher_init (w, ocb, i); |
|
|
1119 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1120 | ev_timer_start (w); |
|
|
1121 | if (drand48 () < 0.5) |
|
|
1122 | ev_timer_stop (w); |
|
|
1123 | } |
|
|
1124 | #endif |
4831 | # endif |
1125 | |
4832 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1126 | struct ev_timer t1; |
|
|
1127 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1128 | ev_timer_start (&t1); |
|
|
1129 | |
|
|
1130 | struct ev_signal sig; |
|
|
1131 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1132 | ev_signal_start (&sig); |
|
|
1133 | |
|
|
1134 | struct ev_check cw; |
|
|
1135 | ev_check_init (&cw, gcb); |
|
|
1136 | ev_check_start (&cw); |
|
|
1137 | |
|
|
1138 | struct ev_idle iw; |
|
|
1139 | ev_idle_init (&iw, gcb); |
|
|
1140 | ev_idle_start (&iw); |
|
|
1141 | |
|
|
1142 | ev_loop (0); |
|
|
1143 | |
|
|
1144 | return 0; |
|
|
1145 | } |
|
|
1146 | |
|
|
1147 | #endif |
4833 | #endif |
1148 | |
4834 | |
|
|
4835 | #if EV_CHECK_ENABLE |
|
|
4836 | if (types & EV_CHECK) |
|
|
4837 | for (i = checkcnt; i--; ) |
|
|
4838 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
4839 | #endif |
1149 | |
4840 | |
|
|
4841 | #if EV_SIGNAL_ENABLE |
|
|
4842 | if (types & EV_SIGNAL) |
|
|
4843 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
4844 | for (wl = signals [i].head; wl; ) |
|
|
4845 | { |
|
|
4846 | wn = wl->next; |
|
|
4847 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
4848 | wl = wn; |
|
|
4849 | } |
|
|
4850 | #endif |
1150 | |
4851 | |
|
|
4852 | #if EV_CHILD_ENABLE |
|
|
4853 | if (types & EV_CHILD) |
|
|
4854 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
4855 | for (wl = childs [i]; wl; ) |
|
|
4856 | { |
|
|
4857 | wn = wl->next; |
|
|
4858 | cb (EV_A_ EV_CHILD, wl); |
|
|
4859 | wl = wn; |
|
|
4860 | } |
|
|
4861 | #endif |
|
|
4862 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
4863 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
4864 | } |
|
|
4865 | #endif |
1151 | |
4866 | |
|
|
4867 | #if EV_MULTIPLICITY |
|
|
4868 | #include "ev_wrap.h" |
|
|
4869 | #endif |
|
|
4870 | |