1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
6 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
7 | * met: |
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8 | * |
9 | * |
9 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
11 | * |
12 | * |
12 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
13 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
14 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
15 | * with the distribution. |
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16 | * |
16 | * |
17 | * 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 |
18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
23 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
26 | * (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 |
27 | * 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. |
28 | */ |
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 |
29 | #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 |
30 | # include "config.h" |
45 | # include "config.h" |
31 | #endif |
46 | # endif |
32 | |
47 | |
33 | #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 | |
34 | #include <stdlib.h> |
167 | #include <stdlib.h> |
35 | #include <unistd.h> |
168 | #include <string.h> |
36 | #include <fcntl.h> |
169 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
170 | #include <stddef.h> |
39 | |
171 | |
40 | #include <stdio.h> |
172 | #include <stdio.h> |
41 | |
173 | |
42 | #include <assert.h> |
174 | #include <assert.h> |
43 | #include <errno.h> |
175 | #include <errno.h> |
44 | #include <sys/types.h> |
176 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #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 | # error "unable to find value for NSIG, please report" |
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247 | /* to make it compile regardless, just remove the above line, */ |
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248 | /* but consider reporting it, too! :) */ |
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249 | # define EV_NSIG 65 |
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250 | #endif |
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251 | |
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252 | #ifndef EV_USE_FLOOR |
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253 | # define EV_USE_FLOOR 0 |
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254 | #endif |
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255 | |
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256 | #ifndef EV_USE_CLOCK_SYSCALL |
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257 | # if __linux && __GLIBC__ >= 2 |
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258 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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259 | # else |
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260 | # define EV_USE_CLOCK_SYSCALL 0 |
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261 | # endif |
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262 | #endif |
48 | |
263 | |
49 | #ifndef EV_USE_MONOTONIC |
264 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
265 | # if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0 |
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266 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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267 | # else |
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268 | # define EV_USE_MONOTONIC 0 |
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269 | # endif |
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270 | #endif |
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271 | |
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272 | #ifndef EV_USE_REALTIME |
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273 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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274 | #endif |
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275 | |
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276 | #ifndef EV_USE_NANOSLEEP |
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277 | # if _POSIX_C_SOURCE >= 199309L |
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278 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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279 | # else |
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280 | # define EV_USE_NANOSLEEP 0 |
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281 | # endif |
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282 | #endif |
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283 | |
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284 | #ifndef EV_USE_SELECT |
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285 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
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286 | #endif |
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287 | |
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288 | #ifndef EV_USE_POLL |
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289 | # ifdef _WIN32 |
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290 | # define EV_USE_POLL 0 |
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291 | # else |
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292 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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293 | # endif |
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294 | #endif |
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295 | |
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296 | #ifndef EV_USE_EPOLL |
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297 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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298 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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299 | # else |
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300 | # define EV_USE_EPOLL 0 |
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301 | # endif |
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302 | #endif |
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303 | |
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304 | #ifndef EV_USE_KQUEUE |
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305 | # define EV_USE_KQUEUE 0 |
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306 | #endif |
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307 | |
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308 | #ifndef EV_USE_PORT |
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309 | # define EV_USE_PORT 0 |
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310 | #endif |
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311 | |
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312 | #ifndef EV_USE_INOTIFY |
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313 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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314 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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315 | # else |
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316 | # define EV_USE_INOTIFY 0 |
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317 | # endif |
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318 | #endif |
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319 | |
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320 | #ifndef EV_PID_HASHSIZE |
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321 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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322 | #endif |
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323 | |
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324 | #ifndef EV_INOTIFY_HASHSIZE |
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325 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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326 | #endif |
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327 | |
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328 | #ifndef EV_USE_EVENTFD |
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329 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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330 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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331 | # else |
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332 | # define EV_USE_EVENTFD 0 |
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333 | # endif |
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334 | #endif |
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335 | |
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336 | #ifndef EV_USE_SIGNALFD |
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337 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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338 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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339 | # else |
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340 | # define EV_USE_SIGNALFD 0 |
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341 | # endif |
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342 | #endif |
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343 | |
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344 | #if 0 /* debugging */ |
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345 | # define EV_VERIFY 3 |
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346 | # define EV_USE_4HEAP 1 |
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347 | # define EV_HEAP_CACHE_AT 1 |
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348 | #endif |
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349 | |
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350 | #ifndef EV_VERIFY |
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351 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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352 | #endif |
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353 | |
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354 | #ifndef EV_USE_4HEAP |
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355 | # define EV_USE_4HEAP EV_FEATURE_DATA |
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356 | #endif |
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357 | |
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358 | #ifndef EV_HEAP_CACHE_AT |
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359 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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360 | #endif |
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361 | |
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362 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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363 | /* which makes programs even slower. might work on other unices, too. */ |
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364 | #if EV_USE_CLOCK_SYSCALL |
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365 | # include <sys/syscall.h> |
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366 | # ifdef SYS_clock_gettime |
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367 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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368 | # undef EV_USE_MONOTONIC |
51 | # define EV_USE_MONOTONIC 1 |
369 | # define EV_USE_MONOTONIC 1 |
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370 | # else |
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371 | # undef EV_USE_CLOCK_SYSCALL |
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372 | # define EV_USE_CLOCK_SYSCALL 0 |
52 | # endif |
373 | # endif |
53 | #endif |
374 | #endif |
54 | |
375 | |
55 | #ifndef EV_USE_SELECT |
376 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
56 | # define EV_USE_SELECT 1 |
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57 | #endif |
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58 | |
377 | |
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378 | #ifdef _AIX |
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379 | /* AIX has a completely broken poll.h header */ |
59 | #ifndef EV_USE_EPOLL |
380 | # undef EV_USE_POLL |
60 | # define EV_USE_EPOLL 0 |
381 | # define EV_USE_POLL 0 |
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382 | #endif |
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383 | |
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384 | #ifndef CLOCK_MONOTONIC |
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385 | # undef EV_USE_MONOTONIC |
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386 | # define EV_USE_MONOTONIC 0 |
61 | #endif |
387 | #endif |
62 | |
388 | |
63 | #ifndef CLOCK_REALTIME |
389 | #ifndef CLOCK_REALTIME |
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390 | # undef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 0 |
391 | # define EV_USE_REALTIME 0 |
65 | #endif |
392 | #endif |
66 | #ifndef EV_USE_REALTIME |
393 | |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
394 | #if !EV_STAT_ENABLE |
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395 | # undef EV_USE_INOTIFY |
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396 | # define EV_USE_INOTIFY 0 |
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397 | #endif |
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398 | |
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399 | #if !EV_USE_NANOSLEEP |
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400 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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401 | # if !defined _WIN32 && !defined __hpux |
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402 | # include <sys/select.h> |
68 | #endif |
403 | # endif |
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404 | #endif |
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405 | |
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406 | #if EV_USE_INOTIFY |
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407 | # include <sys/statfs.h> |
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408 | # include <sys/inotify.h> |
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409 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
410 | # ifndef IN_DONT_FOLLOW |
|
|
411 | # undef EV_USE_INOTIFY |
|
|
412 | # define EV_USE_INOTIFY 0 |
|
|
413 | # endif |
|
|
414 | #endif |
|
|
415 | |
|
|
416 | #if EV_USE_EVENTFD |
|
|
417 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
418 | # include <stdint.h> |
|
|
419 | # ifndef EFD_NONBLOCK |
|
|
420 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
421 | # endif |
|
|
422 | # ifndef EFD_CLOEXEC |
|
|
423 | # ifdef O_CLOEXEC |
|
|
424 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
425 | # else |
|
|
426 | # define EFD_CLOEXEC 02000000 |
|
|
427 | # endif |
|
|
428 | # endif |
|
|
429 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
430 | #endif |
|
|
431 | |
|
|
432 | #if EV_USE_SIGNALFD |
|
|
433 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
434 | # include <stdint.h> |
|
|
435 | # ifndef SFD_NONBLOCK |
|
|
436 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
437 | # endif |
|
|
438 | # ifndef SFD_CLOEXEC |
|
|
439 | # ifdef O_CLOEXEC |
|
|
440 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
441 | # else |
|
|
442 | # define SFD_CLOEXEC 02000000 |
|
|
443 | # endif |
|
|
444 | # endif |
|
|
445 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
446 | |
|
|
447 | struct signalfd_siginfo |
|
|
448 | { |
|
|
449 | uint32_t ssi_signo; |
|
|
450 | char pad[128 - sizeof (uint32_t)]; |
|
|
451 | }; |
|
|
452 | #endif |
|
|
453 | |
|
|
454 | /**/ |
|
|
455 | |
|
|
456 | #if EV_VERIFY >= 3 |
|
|
457 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
458 | #else |
|
|
459 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
460 | #endif |
|
|
461 | |
|
|
462 | /* |
|
|
463 | * This is used to work around floating point rounding problems. |
|
|
464 | * This value is good at least till the year 4000. |
|
|
465 | */ |
|
|
466 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
467 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
69 | |
468 | |
70 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
469 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
470 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
|
|
74 | |
471 | |
75 | #include "ev.h" |
472 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
473 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
76 | |
474 | |
77 | typedef struct ev_watcher *W; |
475 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
78 | typedef struct ev_watcher_list *WL; |
476 | /* ECB.H BEGIN */ |
79 | typedef struct ev_watcher_time *WT; |
477 | /* |
|
|
478 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
479 | * |
|
|
480 | * Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
481 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
482 | * All rights reserved. |
|
|
483 | * |
|
|
484 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
485 | * tion, are permitted provided that the following conditions are met: |
|
|
486 | * |
|
|
487 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
488 | * this list of conditions and the following disclaimer. |
|
|
489 | * |
|
|
490 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
491 | * notice, this list of conditions and the following disclaimer in the |
|
|
492 | * documentation and/or other materials provided with the distribution. |
|
|
493 | * |
|
|
494 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
495 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
496 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
497 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
498 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
499 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
500 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
501 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
502 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
503 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
504 | */ |
80 | |
505 | |
81 | static ev_tstamp now, diff; /* monotonic clock */ |
506 | #ifndef ECB_H |
82 | ev_tstamp ev_now; |
507 | #define ECB_H |
83 | int ev_method; |
|
|
84 | |
508 | |
85 | static int have_monotonic; /* runtime */ |
509 | /* 16 bits major, 16 bits minor */ |
|
|
510 | #define ECB_VERSION 0x00010001 |
86 | |
511 | |
87 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
512 | #ifdef _WIN32 |
88 | static void (*method_modify)(int fd, int oev, int nev); |
513 | typedef signed char int8_t; |
89 | static void (*method_poll)(ev_tstamp timeout); |
514 | typedef unsigned char uint8_t; |
|
|
515 | typedef signed short int16_t; |
|
|
516 | typedef unsigned short uint16_t; |
|
|
517 | typedef signed int int32_t; |
|
|
518 | typedef unsigned int uint32_t; |
|
|
519 | #if __GNUC__ |
|
|
520 | typedef signed long long int64_t; |
|
|
521 | typedef unsigned long long uint64_t; |
|
|
522 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
523 | typedef signed __int64 int64_t; |
|
|
524 | typedef unsigned __int64 uint64_t; |
|
|
525 | #endif |
|
|
526 | #ifdef _WIN64 |
|
|
527 | #define ECB_PTRSIZE 8 |
|
|
528 | typedef uint64_t uintptr_t; |
|
|
529 | typedef int64_t intptr_t; |
|
|
530 | #else |
|
|
531 | #define ECB_PTRSIZE 4 |
|
|
532 | typedef uint32_t uintptr_t; |
|
|
533 | typedef int32_t intptr_t; |
|
|
534 | #endif |
|
|
535 | typedef intptr_t ptrdiff_t; |
|
|
536 | #else |
|
|
537 | #include <inttypes.h> |
|
|
538 | #if UINTMAX_MAX > 0xffffffffU |
|
|
539 | #define ECB_PTRSIZE 8 |
|
|
540 | #else |
|
|
541 | #define ECB_PTRSIZE 4 |
|
|
542 | #endif |
|
|
543 | #endif |
|
|
544 | |
|
|
545 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
546 | * what their idiot authors think are the "more important" extensions, |
|
|
547 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
548 | * or so. |
|
|
549 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
550 | * an issue with that they should have done it right in the first place. |
|
|
551 | */ |
|
|
552 | #ifndef ECB_GCC_VERSION |
|
|
553 | #if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__ |
|
|
554 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
555 | #else |
|
|
556 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
|
|
557 | #endif |
|
|
558 | #endif |
|
|
559 | |
|
|
560 | #define ECB_C (__STDC__+0) /* this assumes that __STDC__ is either empty or a number */ |
|
|
561 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
562 | #define ECB_C11 (__STDC_VERSION__ >= 201112L) |
|
|
563 | #define ECB_CPP (__cplusplus+0) |
|
|
564 | #define ECB_CPP11 (__cplusplus >= 201103L) |
90 | |
565 | |
91 | /*****************************************************************************/ |
566 | /*****************************************************************************/ |
92 | |
567 | |
|
|
568 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
569 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
570 | |
|
|
571 | #if ECB_NO_THREADS |
|
|
572 | #define ECB_NO_SMP 1 |
|
|
573 | #endif |
|
|
574 | |
|
|
575 | #if ECB_NO_SMP |
|
|
576 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
577 | #endif |
|
|
578 | |
|
|
579 | #ifndef ECB_MEMORY_FENCE |
|
|
580 | #if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
581 | #if __i386 || __i386__ |
|
|
582 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
583 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
584 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
585 | #elif __amd64 || __amd64__ || __x86_64 || __x86_64__ |
|
|
586 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
587 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory") |
|
|
588 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
589 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
590 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
591 | #elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \ |
|
|
592 | || defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ |
|
|
593 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
594 | #elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \ |
|
|
595 | || defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__ |
|
|
596 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
597 | #elif __sparc || __sparc__ |
|
|
598 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory") |
|
|
599 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory") |
|
|
600 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore") |
|
|
601 | #elif defined __s390__ || defined __s390x__ |
|
|
602 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory") |
|
|
603 | #elif defined __mips__ |
|
|
604 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
605 | #elif defined __alpha__ |
|
|
606 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory") |
|
|
607 | #elif defined __hppa__ |
|
|
608 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory") |
|
|
609 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("") |
|
|
610 | #elif defined __ia64__ |
|
|
611 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory") |
|
|
612 | #endif |
|
|
613 | #endif |
|
|
614 | #endif |
|
|
615 | |
|
|
616 | #ifndef ECB_MEMORY_FENCE |
|
|
617 | #if ECB_GCC_VERSION(4,7) |
|
|
618 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
619 | #define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
620 | #elif defined __clang && __has_feature (cxx_atomic) |
|
|
621 | /* see comment below (stdatomic.h) about the C11 memory model. */ |
|
|
622 | #define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST) |
|
|
623 | #elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__ |
|
|
624 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
625 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
626 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
627 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
628 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
629 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
630 | #elif defined _WIN32 |
|
|
631 | #include <WinNT.h> |
|
|
632 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
633 | #elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110 |
|
|
634 | #include <mbarrier.h> |
|
|
635 | #define ECB_MEMORY_FENCE __machine_rw_barrier () |
|
|
636 | #define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier () |
|
|
637 | #define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier () |
|
|
638 | #elif __xlC__ |
|
|
639 | #define ECB_MEMORY_FENCE __sync () |
|
|
640 | #endif |
|
|
641 | #endif |
|
|
642 | |
|
|
643 | #ifndef ECB_MEMORY_FENCE |
|
|
644 | #if ECB_C11 && !defined __STDC_NO_ATOMICS__ |
|
|
645 | /* we assume that these memory fences work on all variables/all memory accesses, */ |
|
|
646 | /* not just C11 atomics and atomic accesses */ |
|
|
647 | #include <stdatomic.h> |
|
|
648 | /* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */ |
|
|
649 | /* any fence other than seq_cst, which isn't very efficient for us. */ |
|
|
650 | /* Why that is, we don't know - either the C11 memory model is quite useless */ |
|
|
651 | /* for most usages, or gcc and clang have a bug */ |
|
|
652 | /* I *currently* lean towards the latter, and inefficiently implement */ |
|
|
653 | /* all three of ecb's fences as a seq_cst fence */ |
|
|
654 | #define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst) |
|
|
655 | #endif |
|
|
656 | #endif |
|
|
657 | |
|
|
658 | #ifndef ECB_MEMORY_FENCE |
|
|
659 | #if !ECB_AVOID_PTHREADS |
|
|
660 | /* |
|
|
661 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
662 | * or failure to find pthread.h, then you should implement |
|
|
663 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
664 | * OR provide pthread.h and link against the posix thread library |
|
|
665 | * of your system. |
|
|
666 | */ |
|
|
667 | #include <pthread.h> |
|
|
668 | #define ECB_NEEDS_PTHREADS 1 |
|
|
669 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
670 | |
|
|
671 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
672 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
673 | #endif |
|
|
674 | #endif |
|
|
675 | |
|
|
676 | #if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE |
|
|
677 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
678 | #endif |
|
|
679 | |
|
|
680 | #if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE |
|
|
681 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
682 | #endif |
|
|
683 | |
|
|
684 | /*****************************************************************************/ |
|
|
685 | |
|
|
686 | #if __cplusplus |
|
|
687 | #define ecb_inline static inline |
|
|
688 | #elif ECB_GCC_VERSION(2,5) |
|
|
689 | #define ecb_inline static __inline__ |
|
|
690 | #elif ECB_C99 |
|
|
691 | #define ecb_inline static inline |
|
|
692 | #else |
|
|
693 | #define ecb_inline static |
|
|
694 | #endif |
|
|
695 | |
|
|
696 | #if ECB_GCC_VERSION(3,3) |
|
|
697 | #define ecb_restrict __restrict__ |
|
|
698 | #elif ECB_C99 |
|
|
699 | #define ecb_restrict restrict |
|
|
700 | #else |
|
|
701 | #define ecb_restrict |
|
|
702 | #endif |
|
|
703 | |
|
|
704 | typedef int ecb_bool; |
|
|
705 | |
|
|
706 | #define ECB_CONCAT_(a, b) a ## b |
|
|
707 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
708 | #define ECB_STRINGIFY_(a) # a |
|
|
709 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
710 | |
|
|
711 | #define ecb_function_ ecb_inline |
|
|
712 | |
|
|
713 | #if ECB_GCC_VERSION(3,1) |
|
|
714 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
715 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
716 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
717 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
718 | #else |
|
|
719 | #define ecb_attribute(attrlist) |
|
|
720 | #define ecb_is_constant(expr) 0 |
|
|
721 | #define ecb_expect(expr,value) (expr) |
|
|
722 | #define ecb_prefetch(addr,rw,locality) |
|
|
723 | #endif |
|
|
724 | |
|
|
725 | /* no emulation for ecb_decltype */ |
|
|
726 | #if ECB_GCC_VERSION(4,5) |
|
|
727 | #define ecb_decltype(x) __decltype(x) |
|
|
728 | #elif ECB_GCC_VERSION(3,0) |
|
|
729 | #define ecb_decltype(x) __typeof(x) |
|
|
730 | #endif |
|
|
731 | |
|
|
732 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
733 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
734 | #define ecb_const ecb_attribute ((__const__)) |
|
|
735 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
736 | |
|
|
737 | #if ECB_C11 |
|
|
738 | #define ecb_noreturn _Noreturn |
|
|
739 | #else |
|
|
740 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
741 | #endif |
|
|
742 | |
|
|
743 | #if ECB_GCC_VERSION(4,3) |
|
|
744 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
745 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
746 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
747 | #else |
|
|
748 | #define ecb_artificial |
|
|
749 | #define ecb_hot |
|
|
750 | #define ecb_cold |
|
|
751 | #endif |
|
|
752 | |
|
|
753 | /* put around conditional expressions if you are very sure that the */ |
|
|
754 | /* expression is mostly true or mostly false. note that these return */ |
|
|
755 | /* booleans, not the expression. */ |
|
|
756 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
|
|
757 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
758 | /* for compatibility to the rest of the world */ |
|
|
759 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
760 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
761 | |
|
|
762 | /* count trailing zero bits and count # of one bits */ |
|
|
763 | #if ECB_GCC_VERSION(3,4) |
|
|
764 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
765 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
766 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
767 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
768 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
769 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
770 | /* no popcountll */ |
|
|
771 | #else |
|
|
772 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
773 | ecb_function_ int |
|
|
774 | ecb_ctz32 (uint32_t x) |
|
|
775 | { |
|
|
776 | int r = 0; |
|
|
777 | |
|
|
778 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
779 | |
|
|
780 | #if ECB_branchless_on_i386 |
|
|
781 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
782 | r += !!(x & 0xcccccccc) << 1; |
|
|
783 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
784 | r += !!(x & 0xff00ff00) << 3; |
|
|
785 | r += !!(x & 0xffff0000) << 4; |
|
|
786 | #else |
|
|
787 | if (x & 0xaaaaaaaa) r += 1; |
|
|
788 | if (x & 0xcccccccc) r += 2; |
|
|
789 | if (x & 0xf0f0f0f0) r += 4; |
|
|
790 | if (x & 0xff00ff00) r += 8; |
|
|
791 | if (x & 0xffff0000) r += 16; |
|
|
792 | #endif |
|
|
793 | |
|
|
794 | return r; |
|
|
795 | } |
|
|
796 | |
|
|
797 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
798 | ecb_function_ int |
|
|
799 | ecb_ctz64 (uint64_t x) |
|
|
800 | { |
|
|
801 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
802 | return ecb_ctz32 (x >> shift) + shift; |
|
|
803 | } |
|
|
804 | |
|
|
805 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
806 | ecb_function_ int |
|
|
807 | ecb_popcount32 (uint32_t x) |
|
|
808 | { |
|
|
809 | x -= (x >> 1) & 0x55555555; |
|
|
810 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
811 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
812 | x *= 0x01010101; |
|
|
813 | |
|
|
814 | return x >> 24; |
|
|
815 | } |
|
|
816 | |
|
|
817 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
818 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
819 | { |
|
|
820 | int r = 0; |
|
|
821 | |
|
|
822 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
823 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
824 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
825 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
826 | if (x >> 1) { r += 1; } |
|
|
827 | |
|
|
828 | return r; |
|
|
829 | } |
|
|
830 | |
|
|
831 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
832 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
833 | { |
|
|
834 | int r = 0; |
|
|
835 | |
|
|
836 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
837 | |
|
|
838 | return r + ecb_ld32 (x); |
|
|
839 | } |
|
|
840 | #endif |
|
|
841 | |
|
|
842 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) ecb_const; |
|
|
843 | ecb_function_ ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); } |
|
|
844 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) ecb_const; |
|
|
845 | ecb_function_ ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); } |
|
|
846 | |
|
|
847 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const; |
|
|
848 | ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) |
|
|
849 | { |
|
|
850 | return ( (x * 0x0802U & 0x22110U) |
|
|
851 | | (x * 0x8020U & 0x88440U)) * 0x10101U >> 16; |
|
|
852 | } |
|
|
853 | |
|
|
854 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const; |
|
|
855 | ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) |
|
|
856 | { |
|
|
857 | x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1); |
|
|
858 | x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2); |
|
|
859 | x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4); |
|
|
860 | x = ( x >> 8 ) | ( x << 8); |
|
|
861 | |
|
|
862 | return x; |
|
|
863 | } |
|
|
864 | |
|
|
865 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const; |
|
|
866 | ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) |
|
|
867 | { |
|
|
868 | x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1); |
|
|
869 | x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2); |
|
|
870 | x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4); |
|
|
871 | x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8); |
|
|
872 | x = ( x >> 16 ) | ( x << 16); |
|
|
873 | |
|
|
874 | return x; |
|
|
875 | } |
|
|
876 | |
|
|
877 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
878 | /* so for this version we are lazy */ |
|
|
879 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
880 | ecb_function_ int |
|
|
881 | ecb_popcount64 (uint64_t x) |
|
|
882 | { |
|
|
883 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
884 | } |
|
|
885 | |
|
|
886 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
887 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
888 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
889 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
890 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
891 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
892 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
893 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
894 | |
|
|
895 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
896 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
897 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
898 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
899 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
900 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
901 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
902 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
903 | |
|
|
904 | #if ECB_GCC_VERSION(4,3) |
|
|
905 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
906 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
907 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
908 | #else |
|
|
909 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
910 | ecb_function_ uint16_t |
|
|
911 | ecb_bswap16 (uint16_t x) |
|
|
912 | { |
|
|
913 | return ecb_rotl16 (x, 8); |
|
|
914 | } |
|
|
915 | |
|
|
916 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
917 | ecb_function_ uint32_t |
|
|
918 | ecb_bswap32 (uint32_t x) |
|
|
919 | { |
|
|
920 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
921 | } |
|
|
922 | |
|
|
923 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
924 | ecb_function_ uint64_t |
|
|
925 | ecb_bswap64 (uint64_t x) |
|
|
926 | { |
|
|
927 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
928 | } |
|
|
929 | #endif |
|
|
930 | |
|
|
931 | #if ECB_GCC_VERSION(4,5) |
|
|
932 | #define ecb_unreachable() __builtin_unreachable () |
|
|
933 | #else |
|
|
934 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
935 | ecb_inline void ecb_unreachable (void) ecb_noreturn; |
|
|
936 | ecb_inline void ecb_unreachable (void) { } |
|
|
937 | #endif |
|
|
938 | |
|
|
939 | /* try to tell the compiler that some condition is definitely true */ |
|
|
940 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
941 | |
|
|
942 | ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
943 | ecb_inline unsigned char |
|
|
944 | ecb_byteorder_helper (void) |
|
|
945 | { |
|
|
946 | const uint32_t u = 0x11223344; |
|
|
947 | return *(unsigned char *)&u; |
|
|
948 | } |
|
|
949 | |
|
|
950 | ecb_inline ecb_bool ecb_big_endian (void) ecb_const; |
|
|
951 | ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
952 | ecb_inline ecb_bool ecb_little_endian (void) ecb_const; |
|
|
953 | ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
954 | |
|
|
955 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
956 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
957 | #else |
|
|
958 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
959 | #endif |
|
|
960 | |
|
|
961 | #if __cplusplus |
|
|
962 | template<typename T> |
|
|
963 | static inline T ecb_div_rd (T val, T div) |
|
|
964 | { |
|
|
965 | return val < 0 ? - ((-val + div - 1) / div) : (val ) / div; |
|
|
966 | } |
|
|
967 | template<typename T> |
|
|
968 | static inline T ecb_div_ru (T val, T div) |
|
|
969 | { |
|
|
970 | return val < 0 ? - ((-val ) / div) : (val + div - 1) / div; |
|
|
971 | } |
|
|
972 | #else |
|
|
973 | #define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div)) |
|
|
974 | #define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div)) |
|
|
975 | #endif |
|
|
976 | |
|
|
977 | #if ecb_cplusplus_does_not_suck |
|
|
978 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
979 | template<typename T, int N> |
|
|
980 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
981 | { |
|
|
982 | return N; |
|
|
983 | } |
|
|
984 | #else |
|
|
985 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
986 | #endif |
|
|
987 | |
|
|
988 | #endif |
|
|
989 | |
|
|
990 | /* ECB.H END */ |
|
|
991 | |
|
|
992 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
993 | /* if your architecture doesn't need memory fences, e.g. because it is |
|
|
994 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
995 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
996 | * libev, in which cases the memory fences become nops. |
|
|
997 | * alternatively, you can remove this #error and link against libpthread, |
|
|
998 | * which will then provide the memory fences. |
|
|
999 | */ |
|
|
1000 | # error "memory fences not defined for your architecture, please report" |
|
|
1001 | #endif |
|
|
1002 | |
|
|
1003 | #ifndef ECB_MEMORY_FENCE |
|
|
1004 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
1005 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
1006 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
1007 | #endif |
|
|
1008 | |
|
|
1009 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
1010 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
1011 | #define noinline ecb_noinline |
|
|
1012 | |
|
|
1013 | #define inline_size ecb_inline |
|
|
1014 | |
|
|
1015 | #if EV_FEATURE_CODE |
|
|
1016 | # define inline_speed ecb_inline |
|
|
1017 | #else |
|
|
1018 | # define inline_speed static noinline |
|
|
1019 | #endif |
|
|
1020 | |
|
|
1021 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
1022 | |
|
|
1023 | #if EV_MINPRI == EV_MAXPRI |
|
|
1024 | # define ABSPRI(w) (((W)w), 0) |
|
|
1025 | #else |
|
|
1026 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
1027 | #endif |
|
|
1028 | |
|
|
1029 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
1030 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
1031 | |
|
|
1032 | typedef ev_watcher *W; |
|
|
1033 | typedef ev_watcher_list *WL; |
|
|
1034 | typedef ev_watcher_time *WT; |
|
|
1035 | |
|
|
1036 | #define ev_active(w) ((W)(w))->active |
|
|
1037 | #define ev_at(w) ((WT)(w))->at |
|
|
1038 | |
|
|
1039 | #if EV_USE_REALTIME |
|
|
1040 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
1041 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
1042 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
1043 | #endif |
|
|
1044 | |
|
|
1045 | #if EV_USE_MONOTONIC |
|
|
1046 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
1047 | #endif |
|
|
1048 | |
|
|
1049 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
1050 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
1051 | #endif |
|
|
1052 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
1053 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
1054 | #endif |
|
|
1055 | #ifndef EV_WIN32_CLOSE_FD |
|
|
1056 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
1057 | #endif |
|
|
1058 | |
|
|
1059 | #ifdef _WIN32 |
|
|
1060 | # include "ev_win32.c" |
|
|
1061 | #endif |
|
|
1062 | |
|
|
1063 | /*****************************************************************************/ |
|
|
1064 | |
|
|
1065 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
1066 | |
|
|
1067 | #if EV_USE_FLOOR |
|
|
1068 | # include <math.h> |
|
|
1069 | # define ev_floor(v) floor (v) |
|
|
1070 | #else |
|
|
1071 | |
|
|
1072 | #include <float.h> |
|
|
1073 | |
|
|
1074 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
1075 | static ev_tstamp noinline |
|
|
1076 | ev_floor (ev_tstamp v) |
|
|
1077 | { |
|
|
1078 | /* the choice of shift factor is not terribly important */ |
|
|
1079 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
1080 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
1081 | #else |
|
|
1082 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
1083 | #endif |
|
|
1084 | |
|
|
1085 | /* argument too large for an unsigned long? */ |
|
|
1086 | if (expect_false (v >= shift)) |
|
|
1087 | { |
|
|
1088 | ev_tstamp f; |
|
|
1089 | |
|
|
1090 | if (v == v - 1.) |
|
|
1091 | return v; /* very large number */ |
|
|
1092 | |
|
|
1093 | f = shift * ev_floor (v * (1. / shift)); |
|
|
1094 | return f + ev_floor (v - f); |
|
|
1095 | } |
|
|
1096 | |
|
|
1097 | /* special treatment for negative args? */ |
|
|
1098 | if (expect_false (v < 0.)) |
|
|
1099 | { |
|
|
1100 | ev_tstamp f = -ev_floor (-v); |
|
|
1101 | |
|
|
1102 | return f - (f == v ? 0 : 1); |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | /* fits into an unsigned long */ |
|
|
1106 | return (unsigned long)v; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | #endif |
|
|
1110 | |
|
|
1111 | /*****************************************************************************/ |
|
|
1112 | |
|
|
1113 | #ifdef __linux |
|
|
1114 | # include <sys/utsname.h> |
|
|
1115 | #endif |
|
|
1116 | |
|
|
1117 | static unsigned int noinline ecb_cold |
|
|
1118 | ev_linux_version (void) |
|
|
1119 | { |
|
|
1120 | #ifdef __linux |
|
|
1121 | unsigned int v = 0; |
|
|
1122 | struct utsname buf; |
|
|
1123 | int i; |
|
|
1124 | char *p = buf.release; |
|
|
1125 | |
|
|
1126 | if (uname (&buf)) |
|
|
1127 | return 0; |
|
|
1128 | |
|
|
1129 | for (i = 3+1; --i; ) |
|
|
1130 | { |
|
|
1131 | unsigned int c = 0; |
|
|
1132 | |
|
|
1133 | for (;;) |
|
|
1134 | { |
|
|
1135 | if (*p >= '0' && *p <= '9') |
|
|
1136 | c = c * 10 + *p++ - '0'; |
|
|
1137 | else |
|
|
1138 | { |
|
|
1139 | p += *p == '.'; |
|
|
1140 | break; |
|
|
1141 | } |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | v = (v << 8) | c; |
|
|
1145 | } |
|
|
1146 | |
|
|
1147 | return v; |
|
|
1148 | #else |
|
|
1149 | return 0; |
|
|
1150 | #endif |
|
|
1151 | } |
|
|
1152 | |
|
|
1153 | /*****************************************************************************/ |
|
|
1154 | |
|
|
1155 | #if EV_AVOID_STDIO |
|
|
1156 | static void noinline ecb_cold |
|
|
1157 | ev_printerr (const char *msg) |
|
|
1158 | { |
|
|
1159 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1160 | } |
|
|
1161 | #endif |
|
|
1162 | |
|
|
1163 | static void (*syserr_cb)(const char *msg) EV_THROW; |
|
|
1164 | |
|
|
1165 | void ecb_cold |
|
|
1166 | ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW |
|
|
1167 | { |
|
|
1168 | syserr_cb = cb; |
|
|
1169 | } |
|
|
1170 | |
|
|
1171 | static void noinline ecb_cold |
|
|
1172 | ev_syserr (const char *msg) |
|
|
1173 | { |
|
|
1174 | if (!msg) |
|
|
1175 | msg = "(libev) system error"; |
|
|
1176 | |
|
|
1177 | if (syserr_cb) |
|
|
1178 | syserr_cb (msg); |
|
|
1179 | else |
|
|
1180 | { |
|
|
1181 | #if EV_AVOID_STDIO |
|
|
1182 | ev_printerr (msg); |
|
|
1183 | ev_printerr (": "); |
|
|
1184 | ev_printerr (strerror (errno)); |
|
|
1185 | ev_printerr ("\n"); |
|
|
1186 | #else |
|
|
1187 | perror (msg); |
|
|
1188 | #endif |
|
|
1189 | abort (); |
|
|
1190 | } |
|
|
1191 | } |
|
|
1192 | |
|
|
1193 | static void * |
|
|
1194 | ev_realloc_emul (void *ptr, long size) EV_THROW |
|
|
1195 | { |
|
|
1196 | #if __GLIBC__ |
|
|
1197 | return realloc (ptr, size); |
|
|
1198 | #else |
|
|
1199 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1200 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1201 | * the single unix specification, so work around them here. |
|
|
1202 | */ |
|
|
1203 | |
|
|
1204 | if (size) |
|
|
1205 | return realloc (ptr, size); |
|
|
1206 | |
|
|
1207 | free (ptr); |
|
|
1208 | return 0; |
|
|
1209 | #endif |
|
|
1210 | } |
|
|
1211 | |
|
|
1212 | static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul; |
|
|
1213 | |
|
|
1214 | void ecb_cold |
|
|
1215 | ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW |
|
|
1216 | { |
|
|
1217 | alloc = cb; |
|
|
1218 | } |
|
|
1219 | |
|
|
1220 | inline_speed void * |
|
|
1221 | ev_realloc (void *ptr, long size) |
|
|
1222 | { |
|
|
1223 | ptr = alloc (ptr, size); |
|
|
1224 | |
|
|
1225 | if (!ptr && size) |
|
|
1226 | { |
|
|
1227 | #if EV_AVOID_STDIO |
|
|
1228 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1229 | #else |
|
|
1230 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1231 | #endif |
|
|
1232 | abort (); |
|
|
1233 | } |
|
|
1234 | |
|
|
1235 | return ptr; |
|
|
1236 | } |
|
|
1237 | |
|
|
1238 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
1239 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
1240 | |
|
|
1241 | /*****************************************************************************/ |
|
|
1242 | |
|
|
1243 | /* set in reify when reification needed */ |
|
|
1244 | #define EV_ANFD_REIFY 1 |
|
|
1245 | |
|
|
1246 | /* file descriptor info structure */ |
|
|
1247 | typedef struct |
|
|
1248 | { |
|
|
1249 | WL head; |
|
|
1250 | unsigned char events; /* the events watched for */ |
|
|
1251 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1252 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
|
|
1253 | unsigned char unused; |
|
|
1254 | #if EV_USE_EPOLL |
|
|
1255 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1256 | #endif |
|
|
1257 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1258 | SOCKET handle; |
|
|
1259 | #endif |
|
|
1260 | #if EV_USE_IOCP |
|
|
1261 | OVERLAPPED or, ow; |
|
|
1262 | #endif |
|
|
1263 | } ANFD; |
|
|
1264 | |
|
|
1265 | /* stores the pending event set for a given watcher */ |
|
|
1266 | typedef struct |
|
|
1267 | { |
|
|
1268 | W w; |
|
|
1269 | int events; /* the pending event set for the given watcher */ |
|
|
1270 | } ANPENDING; |
|
|
1271 | |
|
|
1272 | #if EV_USE_INOTIFY |
|
|
1273 | /* hash table entry per inotify-id */ |
|
|
1274 | typedef struct |
|
|
1275 | { |
|
|
1276 | WL head; |
|
|
1277 | } ANFS; |
|
|
1278 | #endif |
|
|
1279 | |
|
|
1280 | /* Heap Entry */ |
|
|
1281 | #if EV_HEAP_CACHE_AT |
|
|
1282 | /* a heap element */ |
|
|
1283 | typedef struct { |
|
|
1284 | ev_tstamp at; |
|
|
1285 | WT w; |
|
|
1286 | } ANHE; |
|
|
1287 | |
|
|
1288 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1289 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1290 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1291 | #else |
|
|
1292 | /* a heap element */ |
|
|
1293 | typedef WT ANHE; |
|
|
1294 | |
|
|
1295 | #define ANHE_w(he) (he) |
|
|
1296 | #define ANHE_at(he) (he)->at |
|
|
1297 | #define ANHE_at_cache(he) |
|
|
1298 | #endif |
|
|
1299 | |
|
|
1300 | #if EV_MULTIPLICITY |
|
|
1301 | |
|
|
1302 | struct ev_loop |
|
|
1303 | { |
|
|
1304 | ev_tstamp ev_rt_now; |
|
|
1305 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
1306 | #define VAR(name,decl) decl; |
|
|
1307 | #include "ev_vars.h" |
|
|
1308 | #undef VAR |
|
|
1309 | }; |
|
|
1310 | #include "ev_wrap.h" |
|
|
1311 | |
|
|
1312 | static struct ev_loop default_loop_struct; |
|
|
1313 | EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */ |
|
|
1314 | |
|
|
1315 | #else |
|
|
1316 | |
|
|
1317 | EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */ |
|
|
1318 | #define VAR(name,decl) static decl; |
|
|
1319 | #include "ev_vars.h" |
|
|
1320 | #undef VAR |
|
|
1321 | |
|
|
1322 | static int ev_default_loop_ptr; |
|
|
1323 | |
|
|
1324 | #endif |
|
|
1325 | |
|
|
1326 | #if EV_FEATURE_API |
|
|
1327 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1328 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1329 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1330 | #else |
|
|
1331 | # define EV_RELEASE_CB (void)0 |
|
|
1332 | # define EV_ACQUIRE_CB (void)0 |
|
|
1333 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1334 | #endif |
|
|
1335 | |
|
|
1336 | #define EVBREAK_RECURSE 0x80 |
|
|
1337 | |
|
|
1338 | /*****************************************************************************/ |
|
|
1339 | |
|
|
1340 | #ifndef EV_HAVE_EV_TIME |
93 | ev_tstamp |
1341 | ev_tstamp |
94 | ev_time (void) |
1342 | ev_time (void) EV_THROW |
95 | { |
1343 | { |
96 | #if EV_USE_REALTIME |
1344 | #if EV_USE_REALTIME |
|
|
1345 | if (expect_true (have_realtime)) |
|
|
1346 | { |
97 | struct timespec ts; |
1347 | struct timespec ts; |
98 | clock_gettime (CLOCK_REALTIME, &ts); |
1348 | clock_gettime (CLOCK_REALTIME, &ts); |
99 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1349 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
100 | #else |
1350 | } |
|
|
1351 | #endif |
|
|
1352 | |
101 | struct timeval tv; |
1353 | struct timeval tv; |
102 | gettimeofday (&tv, 0); |
1354 | gettimeofday (&tv, 0); |
103 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1355 | return tv.tv_sec + tv.tv_usec * 1e-6; |
104 | #endif |
|
|
105 | } |
1356 | } |
|
|
1357 | #endif |
106 | |
1358 | |
107 | static ev_tstamp |
1359 | inline_size ev_tstamp |
108 | get_clock (void) |
1360 | get_clock (void) |
109 | { |
1361 | { |
110 | #if EV_USE_MONOTONIC |
1362 | #if EV_USE_MONOTONIC |
111 | if (have_monotonic) |
1363 | if (expect_true (have_monotonic)) |
112 | { |
1364 | { |
113 | struct timespec ts; |
1365 | struct timespec ts; |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
1366 | clock_gettime (CLOCK_MONOTONIC, &ts); |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1367 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
116 | } |
1368 | } |
117 | #endif |
1369 | #endif |
118 | |
1370 | |
119 | return ev_time (); |
1371 | return ev_time (); |
120 | } |
1372 | } |
121 | |
1373 | |
122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
1374 | #if EV_MULTIPLICITY |
|
|
1375 | ev_tstamp |
|
|
1376 | ev_now (EV_P) EV_THROW |
|
|
1377 | { |
|
|
1378 | return ev_rt_now; |
|
|
1379 | } |
|
|
1380 | #endif |
123 | |
1381 | |
124 | #define array_needsize(base,cur,cnt,init) \ |
1382 | void |
125 | if ((cnt) > cur) \ |
1383 | ev_sleep (ev_tstamp delay) EV_THROW |
126 | { \ |
1384 | { |
127 | int newcnt = cur; \ |
1385 | if (delay > 0.) |
128 | do \ |
|
|
129 | { \ |
|
|
130 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
131 | } \ |
|
|
132 | while ((cnt) > newcnt); \ |
|
|
133 | \ |
|
|
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
135 | init (base + cur, newcnt - cur); \ |
|
|
136 | cur = newcnt; \ |
|
|
137 | } |
1386 | { |
|
|
1387 | #if EV_USE_NANOSLEEP |
|
|
1388 | struct timespec ts; |
|
|
1389 | |
|
|
1390 | EV_TS_SET (ts, delay); |
|
|
1391 | nanosleep (&ts, 0); |
|
|
1392 | #elif defined _WIN32 |
|
|
1393 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
1394 | #else |
|
|
1395 | struct timeval tv; |
|
|
1396 | |
|
|
1397 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
1398 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
1399 | /* by older ones */ |
|
|
1400 | EV_TV_SET (tv, delay); |
|
|
1401 | select (0, 0, 0, 0, &tv); |
|
|
1402 | #endif |
|
|
1403 | } |
|
|
1404 | } |
138 | |
1405 | |
139 | /*****************************************************************************/ |
1406 | /*****************************************************************************/ |
140 | |
1407 | |
141 | typedef struct |
1408 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
142 | { |
|
|
143 | struct ev_io *head; |
|
|
144 | unsigned char events; |
|
|
145 | unsigned char reify; |
|
|
146 | } ANFD; |
|
|
147 | |
1409 | |
148 | static ANFD *anfds; |
1410 | /* find a suitable new size for the given array, */ |
149 | static int anfdmax; |
1411 | /* hopefully by rounding to a nice-to-malloc size */ |
150 | |
1412 | inline_size int |
151 | static void |
1413 | array_nextsize (int elem, int cur, int cnt) |
152 | anfds_init (ANFD *base, int count) |
|
|
153 | { |
1414 | { |
154 | while (count--) |
1415 | int ncur = cur + 1; |
155 | { |
|
|
156 | base->head = 0; |
|
|
157 | base->events = EV_NONE; |
|
|
158 | base->reify = 0; |
|
|
159 | |
1416 | |
160 | ++base; |
1417 | do |
|
|
1418 | ncur <<= 1; |
|
|
1419 | while (cnt > ncur); |
|
|
1420 | |
|
|
1421 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */ |
|
|
1422 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
161 | } |
1423 | { |
162 | } |
1424 | ncur *= elem; |
163 | |
1425 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
164 | typedef struct |
1426 | ncur = ncur - sizeof (void *) * 4; |
165 | { |
1427 | ncur /= elem; |
166 | W w; |
|
|
167 | int events; |
|
|
168 | } ANPENDING; |
|
|
169 | |
|
|
170 | static ANPENDING *pendings; |
|
|
171 | static int pendingmax, pendingcnt; |
|
|
172 | |
|
|
173 | static void |
|
|
174 | event (W w, int events) |
|
|
175 | { |
|
|
176 | if (w->pending) |
|
|
177 | { |
1428 | } |
|
|
1429 | |
|
|
1430 | return ncur; |
|
|
1431 | } |
|
|
1432 | |
|
|
1433 | static void * noinline ecb_cold |
|
|
1434 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
1435 | { |
|
|
1436 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
1437 | return ev_realloc (base, elem * *cur); |
|
|
1438 | } |
|
|
1439 | |
|
|
1440 | #define array_init_zero(base,count) \ |
|
|
1441 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
1442 | |
|
|
1443 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
1444 | if (expect_false ((cnt) > (cur))) \ |
|
|
1445 | { \ |
|
|
1446 | int ecb_unused ocur_ = (cur); \ |
|
|
1447 | (base) = (type *)array_realloc \ |
|
|
1448 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
1449 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | #if 0 |
|
|
1453 | #define array_slim(type,stem) \ |
|
|
1454 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
1455 | { \ |
|
|
1456 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
1457 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
1458 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
1459 | } |
|
|
1460 | #endif |
|
|
1461 | |
|
|
1462 | #define array_free(stem, idx) \ |
|
|
1463 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
1464 | |
|
|
1465 | /*****************************************************************************/ |
|
|
1466 | |
|
|
1467 | /* dummy callback for pending events */ |
|
|
1468 | static void noinline |
|
|
1469 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
1470 | { |
|
|
1471 | } |
|
|
1472 | |
|
|
1473 | void noinline |
|
|
1474 | ev_feed_event (EV_P_ void *w, int revents) EV_THROW |
|
|
1475 | { |
|
|
1476 | W w_ = (W)w; |
|
|
1477 | int pri = ABSPRI (w_); |
|
|
1478 | |
|
|
1479 | if (expect_false (w_->pending)) |
|
|
1480 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
1481 | else |
|
|
1482 | { |
|
|
1483 | w_->pending = ++pendingcnt [pri]; |
|
|
1484 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
1485 | pendings [pri][w_->pending - 1].w = w_; |
178 | pendings [w->pending - 1].events |= events; |
1486 | pendings [pri][w_->pending - 1].events = revents; |
179 | return; |
|
|
180 | } |
1487 | } |
181 | |
1488 | |
182 | w->pending = ++pendingcnt; |
1489 | pendingpri = NUMPRI - 1; |
183 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
184 | pendings [pendingcnt - 1].w = w; |
|
|
185 | pendings [pendingcnt - 1].events = events; |
|
|
186 | } |
1490 | } |
187 | |
1491 | |
188 | static void |
1492 | inline_speed void |
|
|
1493 | feed_reverse (EV_P_ W w) |
|
|
1494 | { |
|
|
1495 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
1496 | rfeeds [rfeedcnt++] = w; |
|
|
1497 | } |
|
|
1498 | |
|
|
1499 | inline_size void |
|
|
1500 | feed_reverse_done (EV_P_ int revents) |
|
|
1501 | { |
|
|
1502 | do |
|
|
1503 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
1504 | while (rfeedcnt); |
|
|
1505 | } |
|
|
1506 | |
|
|
1507 | inline_speed void |
189 | queue_events (W *events, int eventcnt, int type) |
1508 | queue_events (EV_P_ W *events, int eventcnt, int type) |
190 | { |
1509 | { |
191 | int i; |
1510 | int i; |
192 | |
1511 | |
193 | for (i = 0; i < eventcnt; ++i) |
1512 | for (i = 0; i < eventcnt; ++i) |
194 | event (events [i], type); |
1513 | ev_feed_event (EV_A_ events [i], type); |
195 | } |
1514 | } |
196 | |
1515 | |
197 | static void |
1516 | /*****************************************************************************/ |
|
|
1517 | |
|
|
1518 | inline_speed void |
198 | fd_event (int fd, int events) |
1519 | fd_event_nocheck (EV_P_ int fd, int revents) |
199 | { |
1520 | { |
200 | ANFD *anfd = anfds + fd; |
1521 | ANFD *anfd = anfds + fd; |
201 | struct ev_io *w; |
1522 | ev_io *w; |
202 | |
1523 | |
203 | for (w = anfd->head; w; w = w->next) |
1524 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
204 | { |
1525 | { |
205 | int ev = w->events & events; |
1526 | int ev = w->events & revents; |
206 | |
1527 | |
207 | if (ev) |
1528 | if (ev) |
208 | event ((W)w, ev); |
1529 | ev_feed_event (EV_A_ (W)w, ev); |
209 | } |
1530 | } |
210 | } |
1531 | } |
211 | |
1532 | |
212 | /*****************************************************************************/ |
1533 | /* do not submit kernel events for fds that have reify set */ |
|
|
1534 | /* because that means they changed while we were polling for new events */ |
|
|
1535 | inline_speed void |
|
|
1536 | fd_event (EV_P_ int fd, int revents) |
|
|
1537 | { |
|
|
1538 | ANFD *anfd = anfds + fd; |
213 | |
1539 | |
214 | static int *fdchanges; |
1540 | if (expect_true (!anfd->reify)) |
215 | static int fdchangemax, fdchangecnt; |
1541 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1542 | } |
216 | |
1543 | |
217 | static void |
1544 | void |
218 | fd_reify (void) |
1545 | ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW |
|
|
1546 | { |
|
|
1547 | if (fd >= 0 && fd < anfdmax) |
|
|
1548 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1549 | } |
|
|
1550 | |
|
|
1551 | /* make sure the external fd watch events are in-sync */ |
|
|
1552 | /* with the kernel/libev internal state */ |
|
|
1553 | inline_size void |
|
|
1554 | fd_reify (EV_P) |
219 | { |
1555 | { |
220 | int i; |
1556 | int i; |
221 | |
1557 | |
|
|
1558 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
222 | for (i = 0; i < fdchangecnt; ++i) |
1559 | for (i = 0; i < fdchangecnt; ++i) |
223 | { |
1560 | { |
224 | int fd = fdchanges [i]; |
1561 | int fd = fdchanges [i]; |
225 | ANFD *anfd = anfds + fd; |
1562 | ANFD *anfd = anfds + fd; |
226 | struct ev_io *w; |
|
|
227 | |
1563 | |
228 | int events = 0; |
1564 | if (anfd->reify & EV__IOFDSET && anfd->head) |
229 | |
|
|
230 | for (w = anfd->head; w; w = w->next) |
|
|
231 | events |= w->events; |
|
|
232 | |
|
|
233 | anfd->reify = 0; |
|
|
234 | |
|
|
235 | if (anfd->events != events) |
|
|
236 | { |
1565 | { |
|
|
1566 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1567 | |
|
|
1568 | if (handle != anfd->handle) |
|
|
1569 | { |
|
|
1570 | unsigned long arg; |
|
|
1571 | |
|
|
1572 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1573 | |
|
|
1574 | /* handle changed, but fd didn't - we need to do it in two steps */ |
237 | method_modify (fd, anfd->events, events); |
1575 | backend_modify (EV_A_ fd, anfd->events, 0); |
238 | anfd->events = events; |
1576 | anfd->events = 0; |
|
|
1577 | anfd->handle = handle; |
|
|
1578 | } |
239 | } |
1579 | } |
240 | } |
1580 | } |
|
|
1581 | #endif |
|
|
1582 | |
|
|
1583 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1584 | { |
|
|
1585 | int fd = fdchanges [i]; |
|
|
1586 | ANFD *anfd = anfds + fd; |
|
|
1587 | ev_io *w; |
|
|
1588 | |
|
|
1589 | unsigned char o_events = anfd->events; |
|
|
1590 | unsigned char o_reify = anfd->reify; |
|
|
1591 | |
|
|
1592 | anfd->reify = 0; |
|
|
1593 | |
|
|
1594 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
1595 | { |
|
|
1596 | anfd->events = 0; |
|
|
1597 | |
|
|
1598 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1599 | anfd->events |= (unsigned char)w->events; |
|
|
1600 | |
|
|
1601 | if (o_events != anfd->events) |
|
|
1602 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
1603 | } |
|
|
1604 | |
|
|
1605 | if (o_reify & EV__IOFDSET) |
|
|
1606 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
1607 | } |
241 | |
1608 | |
242 | fdchangecnt = 0; |
1609 | fdchangecnt = 0; |
243 | } |
1610 | } |
244 | |
1611 | |
245 | static void |
1612 | /* something about the given fd changed */ |
246 | fd_change (int fd) |
1613 | inline_size void |
|
|
1614 | fd_change (EV_P_ int fd, int flags) |
247 | { |
1615 | { |
248 | if (anfds [fd].reify || fdchangecnt < 0) |
1616 | unsigned char reify = anfds [fd].reify; |
249 | return; |
|
|
250 | |
|
|
251 | anfds [fd].reify = 1; |
1617 | anfds [fd].reify |= flags; |
252 | |
1618 | |
|
|
1619 | if (expect_true (!reify)) |
|
|
1620 | { |
253 | ++fdchangecnt; |
1621 | ++fdchangecnt; |
254 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1622 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
255 | fdchanges [fdchangecnt - 1] = fd; |
1623 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1624 | } |
|
|
1625 | } |
|
|
1626 | |
|
|
1627 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1628 | inline_speed void ecb_cold |
|
|
1629 | fd_kill (EV_P_ int fd) |
|
|
1630 | { |
|
|
1631 | ev_io *w; |
|
|
1632 | |
|
|
1633 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
1634 | { |
|
|
1635 | ev_io_stop (EV_A_ w); |
|
|
1636 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
1637 | } |
|
|
1638 | } |
|
|
1639 | |
|
|
1640 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1641 | inline_size int ecb_cold |
|
|
1642 | fd_valid (int fd) |
|
|
1643 | { |
|
|
1644 | #ifdef _WIN32 |
|
|
1645 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
1646 | #else |
|
|
1647 | return fcntl (fd, F_GETFD) != -1; |
|
|
1648 | #endif |
256 | } |
1649 | } |
257 | |
1650 | |
258 | /* called on EBADF to verify fds */ |
1651 | /* called on EBADF to verify fds */ |
259 | static void |
1652 | static void noinline ecb_cold |
260 | fd_recheck (void) |
1653 | fd_ebadf (EV_P) |
261 | { |
1654 | { |
262 | int fd; |
1655 | int fd; |
263 | |
1656 | |
264 | for (fd = 0; fd < anfdmax; ++fd) |
1657 | for (fd = 0; fd < anfdmax; ++fd) |
265 | if (anfds [fd].events) |
1658 | if (anfds [fd].events) |
266 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
1659 | if (!fd_valid (fd) && errno == EBADF) |
267 | while (anfds [fd].head) |
1660 | fd_kill (EV_A_ fd); |
|
|
1661 | } |
|
|
1662 | |
|
|
1663 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
1664 | static void noinline ecb_cold |
|
|
1665 | fd_enomem (EV_P) |
|
|
1666 | { |
|
|
1667 | int fd; |
|
|
1668 | |
|
|
1669 | for (fd = anfdmax; fd--; ) |
|
|
1670 | if (anfds [fd].events) |
|
|
1671 | { |
|
|
1672 | fd_kill (EV_A_ fd); |
|
|
1673 | break; |
|
|
1674 | } |
|
|
1675 | } |
|
|
1676 | |
|
|
1677 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
1678 | static void noinline |
|
|
1679 | fd_rearm_all (EV_P) |
|
|
1680 | { |
|
|
1681 | int fd; |
|
|
1682 | |
|
|
1683 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
1684 | if (anfds [fd].events) |
|
|
1685 | { |
|
|
1686 | anfds [fd].events = 0; |
|
|
1687 | anfds [fd].emask = 0; |
|
|
1688 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
|
|
1689 | } |
|
|
1690 | } |
|
|
1691 | |
|
|
1692 | /* used to prepare libev internal fd's */ |
|
|
1693 | /* this is not fork-safe */ |
|
|
1694 | inline_speed void |
|
|
1695 | fd_intern (int fd) |
|
|
1696 | { |
|
|
1697 | #ifdef _WIN32 |
|
|
1698 | unsigned long arg = 1; |
|
|
1699 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1700 | #else |
|
|
1701 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1702 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1703 | #endif |
|
|
1704 | } |
|
|
1705 | |
|
|
1706 | /*****************************************************************************/ |
|
|
1707 | |
|
|
1708 | /* |
|
|
1709 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1710 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1711 | * the branching factor of the d-tree. |
|
|
1712 | */ |
|
|
1713 | |
|
|
1714 | /* |
|
|
1715 | * at the moment we allow libev the luxury of two heaps, |
|
|
1716 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1717 | * which is more cache-efficient. |
|
|
1718 | * the difference is about 5% with 50000+ watchers. |
|
|
1719 | */ |
|
|
1720 | #if EV_USE_4HEAP |
|
|
1721 | |
|
|
1722 | #define DHEAP 4 |
|
|
1723 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1724 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1725 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1726 | |
|
|
1727 | /* away from the root */ |
|
|
1728 | inline_speed void |
|
|
1729 | downheap (ANHE *heap, int N, int k) |
|
|
1730 | { |
|
|
1731 | ANHE he = heap [k]; |
|
|
1732 | ANHE *E = heap + N + HEAP0; |
|
|
1733 | |
|
|
1734 | for (;;) |
|
|
1735 | { |
|
|
1736 | ev_tstamp minat; |
|
|
1737 | ANHE *minpos; |
|
|
1738 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1739 | |
|
|
1740 | /* find minimum child */ |
|
|
1741 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1742 | { |
|
|
1743 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1744 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1745 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1746 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1747 | } |
|
|
1748 | else if (pos < E) |
|
|
1749 | { |
|
|
1750 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1751 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1752 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1753 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1754 | } |
|
|
1755 | else |
|
|
1756 | break; |
|
|
1757 | |
|
|
1758 | if (ANHE_at (he) <= minat) |
|
|
1759 | break; |
|
|
1760 | |
|
|
1761 | heap [k] = *minpos; |
|
|
1762 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1763 | |
|
|
1764 | k = minpos - heap; |
|
|
1765 | } |
|
|
1766 | |
|
|
1767 | heap [k] = he; |
|
|
1768 | ev_active (ANHE_w (he)) = k; |
|
|
1769 | } |
|
|
1770 | |
|
|
1771 | #else /* 4HEAP */ |
|
|
1772 | |
|
|
1773 | #define HEAP0 1 |
|
|
1774 | #define HPARENT(k) ((k) >> 1) |
|
|
1775 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1776 | |
|
|
1777 | /* away from the root */ |
|
|
1778 | inline_speed void |
|
|
1779 | downheap (ANHE *heap, int N, int k) |
|
|
1780 | { |
|
|
1781 | ANHE he = heap [k]; |
|
|
1782 | |
|
|
1783 | for (;;) |
|
|
1784 | { |
|
|
1785 | int c = k << 1; |
|
|
1786 | |
|
|
1787 | if (c >= N + HEAP0) |
|
|
1788 | break; |
|
|
1789 | |
|
|
1790 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1791 | ? 1 : 0; |
|
|
1792 | |
|
|
1793 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1794 | break; |
|
|
1795 | |
|
|
1796 | heap [k] = heap [c]; |
|
|
1797 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1798 | |
|
|
1799 | k = c; |
|
|
1800 | } |
|
|
1801 | |
|
|
1802 | heap [k] = he; |
|
|
1803 | ev_active (ANHE_w (he)) = k; |
|
|
1804 | } |
|
|
1805 | #endif |
|
|
1806 | |
|
|
1807 | /* towards the root */ |
|
|
1808 | inline_speed void |
|
|
1809 | upheap (ANHE *heap, int k) |
|
|
1810 | { |
|
|
1811 | ANHE he = heap [k]; |
|
|
1812 | |
|
|
1813 | for (;;) |
|
|
1814 | { |
|
|
1815 | int p = HPARENT (k); |
|
|
1816 | |
|
|
1817 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1818 | break; |
|
|
1819 | |
|
|
1820 | heap [k] = heap [p]; |
|
|
1821 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1822 | k = p; |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | heap [k] = he; |
|
|
1826 | ev_active (ANHE_w (he)) = k; |
|
|
1827 | } |
|
|
1828 | |
|
|
1829 | /* move an element suitably so it is in a correct place */ |
|
|
1830 | inline_size void |
|
|
1831 | adjustheap (ANHE *heap, int N, int k) |
|
|
1832 | { |
|
|
1833 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
1834 | upheap (heap, k); |
|
|
1835 | else |
|
|
1836 | downheap (heap, N, k); |
|
|
1837 | } |
|
|
1838 | |
|
|
1839 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1840 | inline_size void |
|
|
1841 | reheap (ANHE *heap, int N) |
|
|
1842 | { |
|
|
1843 | int i; |
|
|
1844 | |
|
|
1845 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1846 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1847 | for (i = 0; i < N; ++i) |
|
|
1848 | upheap (heap, i + HEAP0); |
|
|
1849 | } |
|
|
1850 | |
|
|
1851 | /*****************************************************************************/ |
|
|
1852 | |
|
|
1853 | /* associate signal watchers to a signal signal */ |
|
|
1854 | typedef struct |
|
|
1855 | { |
|
|
1856 | EV_ATOMIC_T pending; |
|
|
1857 | #if EV_MULTIPLICITY |
|
|
1858 | EV_P; |
|
|
1859 | #endif |
|
|
1860 | WL head; |
|
|
1861 | } ANSIG; |
|
|
1862 | |
|
|
1863 | static ANSIG signals [EV_NSIG - 1]; |
|
|
1864 | |
|
|
1865 | /*****************************************************************************/ |
|
|
1866 | |
|
|
1867 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1868 | |
|
|
1869 | static void noinline ecb_cold |
|
|
1870 | evpipe_init (EV_P) |
|
|
1871 | { |
|
|
1872 | if (!ev_is_active (&pipe_w)) |
|
|
1873 | { |
|
|
1874 | # if EV_USE_EVENTFD |
|
|
1875 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1876 | if (evfd < 0 && errno == EINVAL) |
|
|
1877 | evfd = eventfd (0, 0); |
|
|
1878 | |
|
|
1879 | if (evfd >= 0) |
|
|
1880 | { |
|
|
1881 | evpipe [0] = -1; |
|
|
1882 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1883 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1884 | } |
|
|
1885 | else |
|
|
1886 | # endif |
|
|
1887 | { |
|
|
1888 | while (pipe (evpipe)) |
|
|
1889 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1890 | |
|
|
1891 | fd_intern (evpipe [0]); |
|
|
1892 | fd_intern (evpipe [1]); |
|
|
1893 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1894 | } |
|
|
1895 | |
|
|
1896 | ev_io_start (EV_A_ &pipe_w); |
|
|
1897 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1898 | } |
|
|
1899 | } |
|
|
1900 | |
|
|
1901 | inline_speed void |
|
|
1902 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1903 | { |
|
|
1904 | ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */ |
|
|
1905 | |
|
|
1906 | if (expect_true (*flag)) |
|
|
1907 | return; |
|
|
1908 | |
|
|
1909 | *flag = 1; |
|
|
1910 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1911 | |
|
|
1912 | pipe_write_skipped = 1; |
|
|
1913 | |
|
|
1914 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1915 | |
|
|
1916 | if (pipe_write_wanted) |
|
|
1917 | { |
|
|
1918 | int old_errno; |
|
|
1919 | |
|
|
1920 | pipe_write_skipped = 0; |
|
|
1921 | ECB_MEMORY_FENCE_RELEASE; |
|
|
1922 | |
|
|
1923 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
1924 | |
|
|
1925 | #if EV_USE_EVENTFD |
|
|
1926 | if (evfd >= 0) |
|
|
1927 | { |
|
|
1928 | uint64_t counter = 1; |
|
|
1929 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1930 | } |
|
|
1931 | else |
|
|
1932 | #endif |
|
|
1933 | { |
|
|
1934 | #ifdef _WIN32 |
|
|
1935 | WSABUF buf; |
|
|
1936 | DWORD sent; |
|
|
1937 | buf.buf = &buf; |
|
|
1938 | buf.len = 1; |
|
|
1939 | WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0); |
|
|
1940 | #else |
|
|
1941 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1942 | #endif |
|
|
1943 | } |
|
|
1944 | |
|
|
1945 | errno = old_errno; |
|
|
1946 | } |
|
|
1947 | } |
|
|
1948 | |
|
|
1949 | /* called whenever the libev signal pipe */ |
|
|
1950 | /* got some events (signal, async) */ |
|
|
1951 | static void |
|
|
1952 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1953 | { |
|
|
1954 | int i; |
|
|
1955 | |
|
|
1956 | if (revents & EV_READ) |
|
|
1957 | { |
|
|
1958 | #if EV_USE_EVENTFD |
|
|
1959 | if (evfd >= 0) |
|
|
1960 | { |
|
|
1961 | uint64_t counter; |
|
|
1962 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1963 | } |
|
|
1964 | else |
|
|
1965 | #endif |
|
|
1966 | { |
|
|
1967 | char dummy[4]; |
|
|
1968 | #ifdef _WIN32 |
|
|
1969 | WSABUF buf; |
|
|
1970 | DWORD recvd; |
|
|
1971 | DWORD flags = 0; |
|
|
1972 | buf.buf = dummy; |
|
|
1973 | buf.len = sizeof (dummy); |
|
|
1974 | WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0); |
|
|
1975 | #else |
|
|
1976 | read (evpipe [0], &dummy, sizeof (dummy)); |
|
|
1977 | #endif |
|
|
1978 | } |
|
|
1979 | } |
|
|
1980 | |
|
|
1981 | pipe_write_skipped = 0; |
|
|
1982 | |
|
|
1983 | ECB_MEMORY_FENCE; /* push out skipped, acquire flags */ |
|
|
1984 | |
|
|
1985 | #if EV_SIGNAL_ENABLE |
|
|
1986 | if (sig_pending) |
|
|
1987 | { |
|
|
1988 | sig_pending = 0; |
|
|
1989 | |
|
|
1990 | ECB_MEMORY_FENCE; |
|
|
1991 | |
|
|
1992 | for (i = EV_NSIG - 1; i--; ) |
|
|
1993 | if (expect_false (signals [i].pending)) |
|
|
1994 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1995 | } |
|
|
1996 | #endif |
|
|
1997 | |
|
|
1998 | #if EV_ASYNC_ENABLE |
|
|
1999 | if (async_pending) |
|
|
2000 | { |
|
|
2001 | async_pending = 0; |
|
|
2002 | |
|
|
2003 | ECB_MEMORY_FENCE; |
|
|
2004 | |
|
|
2005 | for (i = asynccnt; i--; ) |
|
|
2006 | if (asyncs [i]->sent) |
268 | { |
2007 | { |
269 | ev_io_stop (anfds [fd].head); |
2008 | asyncs [i]->sent = 0; |
270 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
2009 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2010 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
271 | } |
2011 | } |
|
|
2012 | } |
|
|
2013 | #endif |
272 | } |
2014 | } |
273 | |
2015 | |
274 | /*****************************************************************************/ |
2016 | /*****************************************************************************/ |
275 | |
2017 | |
276 | static struct ev_timer **timers; |
2018 | void |
277 | static int timermax, timercnt; |
2019 | ev_feed_signal (int signum) EV_THROW |
|
|
2020 | { |
|
|
2021 | #if EV_MULTIPLICITY |
|
|
2022 | EV_P = signals [signum - 1].loop; |
278 | |
2023 | |
279 | static struct ev_periodic **periodics; |
2024 | if (!EV_A) |
280 | static int periodicmax, periodiccnt; |
2025 | return; |
|
|
2026 | #endif |
|
|
2027 | |
|
|
2028 | if (!ev_active (&pipe_w)) |
|
|
2029 | return; |
|
|
2030 | |
|
|
2031 | signals [signum - 1].pending = 1; |
|
|
2032 | evpipe_write (EV_A_ &sig_pending); |
|
|
2033 | } |
281 | |
2034 | |
282 | static void |
2035 | static void |
283 | upheap (WT *timers, int k) |
2036 | ev_sighandler (int signum) |
284 | { |
2037 | { |
285 | WT w = timers [k]; |
2038 | #ifdef _WIN32 |
|
|
2039 | signal (signum, ev_sighandler); |
|
|
2040 | #endif |
286 | |
2041 | |
287 | while (k && timers [k >> 1]->at > w->at) |
2042 | ev_feed_signal (signum); |
288 | { |
|
|
289 | timers [k] = timers [k >> 1]; |
|
|
290 | timers [k]->active = k + 1; |
|
|
291 | k >>= 1; |
|
|
292 | } |
|
|
293 | |
|
|
294 | timers [k] = w; |
|
|
295 | timers [k]->active = k + 1; |
|
|
296 | |
|
|
297 | } |
2043 | } |
298 | |
2044 | |
|
|
2045 | void noinline |
|
|
2046 | ev_feed_signal_event (EV_P_ int signum) EV_THROW |
|
|
2047 | { |
|
|
2048 | WL w; |
|
|
2049 | |
|
|
2050 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
2051 | return; |
|
|
2052 | |
|
|
2053 | --signum; |
|
|
2054 | |
|
|
2055 | #if EV_MULTIPLICITY |
|
|
2056 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
2057 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
2058 | |
|
|
2059 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
2060 | return; |
|
|
2061 | #endif |
|
|
2062 | |
|
|
2063 | signals [signum].pending = 0; |
|
|
2064 | ECB_MEMORY_FENCE_RELEASE; |
|
|
2065 | |
|
|
2066 | for (w = signals [signum].head; w; w = w->next) |
|
|
2067 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
2068 | } |
|
|
2069 | |
|
|
2070 | #if EV_USE_SIGNALFD |
299 | static void |
2071 | static void |
300 | downheap (WT *timers, int N, int k) |
2072 | sigfdcb (EV_P_ ev_io *iow, int revents) |
301 | { |
2073 | { |
302 | WT w = timers [k]; |
2074 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
303 | |
2075 | |
304 | while (k < (N >> 1)) |
2076 | for (;;) |
305 | { |
2077 | { |
306 | int j = k << 1; |
2078 | ssize_t res = read (sigfd, si, sizeof (si)); |
307 | |
2079 | |
308 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
2080 | /* not ISO-C, as res might be -1, but works with SuS */ |
309 | ++j; |
2081 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
2082 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
310 | |
2083 | |
311 | if (w->at <= timers [j]->at) |
2084 | if (res < (ssize_t)sizeof (si)) |
312 | break; |
2085 | break; |
313 | |
|
|
314 | timers [k] = timers [j]; |
|
|
315 | timers [k]->active = k + 1; |
|
|
316 | k = j; |
|
|
317 | } |
2086 | } |
318 | |
|
|
319 | timers [k] = w; |
|
|
320 | timers [k]->active = k + 1; |
|
|
321 | } |
2087 | } |
|
|
2088 | #endif |
|
|
2089 | |
|
|
2090 | #endif |
322 | |
2091 | |
323 | /*****************************************************************************/ |
2092 | /*****************************************************************************/ |
324 | |
2093 | |
325 | typedef struct |
2094 | #if EV_CHILD_ENABLE |
326 | { |
2095 | static WL childs [EV_PID_HASHSIZE]; |
327 | struct ev_signal *head; |
|
|
328 | sig_atomic_t gotsig; |
|
|
329 | } ANSIG; |
|
|
330 | |
2096 | |
331 | static ANSIG *signals; |
|
|
332 | static int signalmax; |
|
|
333 | |
|
|
334 | static int sigpipe [2]; |
|
|
335 | static sig_atomic_t gotsig; |
|
|
336 | static struct ev_io sigev; |
|
|
337 | |
|
|
338 | static void |
|
|
339 | signals_init (ANSIG *base, int count) |
|
|
340 | { |
|
|
341 | while (count--) |
|
|
342 | { |
|
|
343 | base->head = 0; |
|
|
344 | base->gotsig = 0; |
|
|
345 | |
|
|
346 | ++base; |
|
|
347 | } |
|
|
348 | } |
|
|
349 | |
|
|
350 | static void |
|
|
351 | sighandler (int signum) |
|
|
352 | { |
|
|
353 | signals [signum - 1].gotsig = 1; |
|
|
354 | |
|
|
355 | if (!gotsig) |
|
|
356 | { |
|
|
357 | gotsig = 1; |
|
|
358 | write (sigpipe [1], &gotsig, 1); |
|
|
359 | } |
|
|
360 | } |
|
|
361 | |
|
|
362 | static void |
|
|
363 | sigcb (struct ev_io *iow, int revents) |
|
|
364 | { |
|
|
365 | struct ev_signal *w; |
|
|
366 | int sig; |
|
|
367 | |
|
|
368 | gotsig = 0; |
|
|
369 | read (sigpipe [0], &revents, 1); |
|
|
370 | |
|
|
371 | for (sig = signalmax; sig--; ) |
|
|
372 | if (signals [sig].gotsig) |
|
|
373 | { |
|
|
374 | signals [sig].gotsig = 0; |
|
|
375 | |
|
|
376 | for (w = signals [sig].head; w; w = w->next) |
|
|
377 | event ((W)w, EV_SIGNAL); |
|
|
378 | } |
|
|
379 | } |
|
|
380 | |
|
|
381 | static void |
|
|
382 | siginit (void) |
|
|
383 | { |
|
|
384 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
385 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
386 | |
|
|
387 | /* rather than sort out wether we really need nb, set it */ |
|
|
388 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
389 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
390 | |
|
|
391 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
392 | ev_io_start (&sigev); |
|
|
393 | } |
|
|
394 | |
|
|
395 | /*****************************************************************************/ |
|
|
396 | |
|
|
397 | static struct ev_idle **idles; |
|
|
398 | static int idlemax, idlecnt; |
|
|
399 | |
|
|
400 | static struct ev_prepare **prepares; |
|
|
401 | static int preparemax, preparecnt; |
|
|
402 | |
|
|
403 | static struct ev_check **checks; |
|
|
404 | static int checkmax, checkcnt; |
|
|
405 | |
|
|
406 | /*****************************************************************************/ |
|
|
407 | |
|
|
408 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
409 | static struct ev_signal childev; |
2097 | static ev_signal childev; |
|
|
2098 | |
|
|
2099 | #ifndef WIFCONTINUED |
|
|
2100 | # define WIFCONTINUED(status) 0 |
|
|
2101 | #endif |
|
|
2102 | |
|
|
2103 | /* handle a single child status event */ |
|
|
2104 | inline_speed void |
|
|
2105 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
2106 | { |
|
|
2107 | ev_child *w; |
|
|
2108 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
2109 | |
|
|
2110 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2111 | { |
|
|
2112 | if ((w->pid == pid || !w->pid) |
|
|
2113 | && (!traced || (w->flags & 1))) |
|
|
2114 | { |
|
|
2115 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
2116 | w->rpid = pid; |
|
|
2117 | w->rstatus = status; |
|
|
2118 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
2119 | } |
|
|
2120 | } |
|
|
2121 | } |
410 | |
2122 | |
411 | #ifndef WCONTINUED |
2123 | #ifndef WCONTINUED |
412 | # define WCONTINUED 0 |
2124 | # define WCONTINUED 0 |
413 | #endif |
2125 | #endif |
414 | |
2126 | |
|
|
2127 | /* called on sigchld etc., calls waitpid */ |
415 | static void |
2128 | static void |
416 | childcb (struct ev_signal *sw, int revents) |
2129 | childcb (EV_P_ ev_signal *sw, int revents) |
417 | { |
2130 | { |
418 | struct ev_child *w; |
|
|
419 | int pid, status; |
2131 | int pid, status; |
420 | |
2132 | |
|
|
2133 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
421 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
2134 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
422 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
2135 | if (!WCONTINUED |
423 | if (w->pid == pid || w->pid == -1) |
2136 | || errno != EINVAL |
424 | { |
2137 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
425 | w->status = status; |
2138 | return; |
426 | event ((W)w, EV_CHILD); |
2139 | |
427 | } |
2140 | /* make sure we are called again until all children have been reaped */ |
|
|
2141 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
2142 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
2143 | |
|
|
2144 | child_reap (EV_A_ pid, pid, status); |
|
|
2145 | if ((EV_PID_HASHSIZE) > 1) |
|
|
2146 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
428 | } |
2147 | } |
|
|
2148 | |
|
|
2149 | #endif |
429 | |
2150 | |
430 | /*****************************************************************************/ |
2151 | /*****************************************************************************/ |
431 | |
2152 | |
|
|
2153 | #if EV_USE_IOCP |
|
|
2154 | # include "ev_iocp.c" |
|
|
2155 | #endif |
|
|
2156 | #if EV_USE_PORT |
|
|
2157 | # include "ev_port.c" |
|
|
2158 | #endif |
|
|
2159 | #if EV_USE_KQUEUE |
|
|
2160 | # include "ev_kqueue.c" |
|
|
2161 | #endif |
432 | #if EV_USE_EPOLL |
2162 | #if EV_USE_EPOLL |
433 | # include "ev_epoll.c" |
2163 | # include "ev_epoll.c" |
434 | #endif |
2164 | #endif |
|
|
2165 | #if EV_USE_POLL |
|
|
2166 | # include "ev_poll.c" |
|
|
2167 | #endif |
435 | #if EV_USE_SELECT |
2168 | #if EV_USE_SELECT |
436 | # include "ev_select.c" |
2169 | # include "ev_select.c" |
437 | #endif |
2170 | #endif |
438 | |
2171 | |
|
|
2172 | int ecb_cold |
|
|
2173 | ev_version_major (void) EV_THROW |
|
|
2174 | { |
|
|
2175 | return EV_VERSION_MAJOR; |
|
|
2176 | } |
|
|
2177 | |
|
|
2178 | int ecb_cold |
|
|
2179 | ev_version_minor (void) EV_THROW |
|
|
2180 | { |
|
|
2181 | return EV_VERSION_MINOR; |
|
|
2182 | } |
|
|
2183 | |
|
|
2184 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
2185 | int inline_size ecb_cold |
|
|
2186 | enable_secure (void) |
|
|
2187 | { |
|
|
2188 | #ifdef _WIN32 |
|
|
2189 | return 0; |
|
|
2190 | #else |
|
|
2191 | return getuid () != geteuid () |
|
|
2192 | || getgid () != getegid (); |
|
|
2193 | #endif |
|
|
2194 | } |
|
|
2195 | |
|
|
2196 | unsigned int ecb_cold |
|
|
2197 | ev_supported_backends (void) EV_THROW |
|
|
2198 | { |
|
|
2199 | unsigned int flags = 0; |
|
|
2200 | |
|
|
2201 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
2202 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
2203 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2204 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
2205 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
2206 | |
|
|
2207 | return flags; |
|
|
2208 | } |
|
|
2209 | |
|
|
2210 | unsigned int ecb_cold |
|
|
2211 | ev_recommended_backends (void) EV_THROW |
|
|
2212 | { |
|
|
2213 | unsigned int flags = ev_supported_backends (); |
|
|
2214 | |
|
|
2215 | #ifndef __NetBSD__ |
|
|
2216 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
2217 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
2218 | flags &= ~EVBACKEND_KQUEUE; |
|
|
2219 | #endif |
|
|
2220 | #ifdef __APPLE__ |
|
|
2221 | /* only select works correctly on that "unix-certified" platform */ |
|
|
2222 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2223 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2224 | #endif |
|
|
2225 | #ifdef __FreeBSD__ |
|
|
2226 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2227 | #endif |
|
|
2228 | |
|
|
2229 | return flags; |
|
|
2230 | } |
|
|
2231 | |
|
|
2232 | unsigned int ecb_cold |
|
|
2233 | ev_embeddable_backends (void) EV_THROW |
|
|
2234 | { |
|
|
2235 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
2236 | |
|
|
2237 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
2238 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
2239 | flags &= ~EVBACKEND_EPOLL; |
|
|
2240 | |
|
|
2241 | return flags; |
|
|
2242 | } |
|
|
2243 | |
|
|
2244 | unsigned int |
|
|
2245 | ev_backend (EV_P) EV_THROW |
|
|
2246 | { |
|
|
2247 | return backend; |
|
|
2248 | } |
|
|
2249 | |
|
|
2250 | #if EV_FEATURE_API |
|
|
2251 | unsigned int |
|
|
2252 | ev_iteration (EV_P) EV_THROW |
|
|
2253 | { |
|
|
2254 | return loop_count; |
|
|
2255 | } |
|
|
2256 | |
|
|
2257 | unsigned int |
|
|
2258 | ev_depth (EV_P) EV_THROW |
|
|
2259 | { |
|
|
2260 | return loop_depth; |
|
|
2261 | } |
|
|
2262 | |
|
|
2263 | void |
|
|
2264 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2265 | { |
|
|
2266 | io_blocktime = interval; |
|
|
2267 | } |
|
|
2268 | |
|
|
2269 | void |
|
|
2270 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW |
|
|
2271 | { |
|
|
2272 | timeout_blocktime = interval; |
|
|
2273 | } |
|
|
2274 | |
|
|
2275 | void |
|
|
2276 | ev_set_userdata (EV_P_ void *data) EV_THROW |
|
|
2277 | { |
|
|
2278 | userdata = data; |
|
|
2279 | } |
|
|
2280 | |
|
|
2281 | void * |
|
|
2282 | ev_userdata (EV_P) EV_THROW |
|
|
2283 | { |
|
|
2284 | return userdata; |
|
|
2285 | } |
|
|
2286 | |
|
|
2287 | void |
|
|
2288 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW |
|
|
2289 | { |
|
|
2290 | invoke_cb = invoke_pending_cb; |
|
|
2291 | } |
|
|
2292 | |
|
|
2293 | void |
|
|
2294 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW |
|
|
2295 | { |
|
|
2296 | release_cb = release; |
|
|
2297 | acquire_cb = acquire; |
|
|
2298 | } |
|
|
2299 | #endif |
|
|
2300 | |
|
|
2301 | /* initialise a loop structure, must be zero-initialised */ |
|
|
2302 | static void noinline ecb_cold |
|
|
2303 | loop_init (EV_P_ unsigned int flags) EV_THROW |
|
|
2304 | { |
|
|
2305 | if (!backend) |
|
|
2306 | { |
|
|
2307 | origflags = flags; |
|
|
2308 | |
|
|
2309 | #if EV_USE_REALTIME |
|
|
2310 | if (!have_realtime) |
|
|
2311 | { |
|
|
2312 | struct timespec ts; |
|
|
2313 | |
|
|
2314 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2315 | have_realtime = 1; |
|
|
2316 | } |
|
|
2317 | #endif |
|
|
2318 | |
|
|
2319 | #if EV_USE_MONOTONIC |
|
|
2320 | if (!have_monotonic) |
|
|
2321 | { |
|
|
2322 | struct timespec ts; |
|
|
2323 | |
|
|
2324 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
2325 | have_monotonic = 1; |
|
|
2326 | } |
|
|
2327 | #endif |
|
|
2328 | |
|
|
2329 | /* pid check not overridable via env */ |
|
|
2330 | #ifndef _WIN32 |
|
|
2331 | if (flags & EVFLAG_FORKCHECK) |
|
|
2332 | curpid = getpid (); |
|
|
2333 | #endif |
|
|
2334 | |
|
|
2335 | if (!(flags & EVFLAG_NOENV) |
|
|
2336 | && !enable_secure () |
|
|
2337 | && getenv ("LIBEV_FLAGS")) |
|
|
2338 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
2339 | |
|
|
2340 | ev_rt_now = ev_time (); |
|
|
2341 | mn_now = get_clock (); |
|
|
2342 | now_floor = mn_now; |
|
|
2343 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2344 | #if EV_FEATURE_API |
|
|
2345 | invoke_cb = ev_invoke_pending; |
|
|
2346 | #endif |
|
|
2347 | |
|
|
2348 | io_blocktime = 0.; |
|
|
2349 | timeout_blocktime = 0.; |
|
|
2350 | backend = 0; |
|
|
2351 | backend_fd = -1; |
|
|
2352 | sig_pending = 0; |
|
|
2353 | #if EV_ASYNC_ENABLE |
|
|
2354 | async_pending = 0; |
|
|
2355 | #endif |
|
|
2356 | pipe_write_skipped = 0; |
|
|
2357 | pipe_write_wanted = 0; |
|
|
2358 | #if EV_USE_INOTIFY |
|
|
2359 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2360 | #endif |
|
|
2361 | #if EV_USE_SIGNALFD |
|
|
2362 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2363 | #endif |
|
|
2364 | |
|
|
2365 | if (!(flags & EVBACKEND_MASK)) |
|
|
2366 | flags |= ev_recommended_backends (); |
|
|
2367 | |
|
|
2368 | #if EV_USE_IOCP |
|
|
2369 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2370 | #endif |
|
|
2371 | #if EV_USE_PORT |
|
|
2372 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
2373 | #endif |
|
|
2374 | #if EV_USE_KQUEUE |
|
|
2375 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
2376 | #endif |
|
|
2377 | #if EV_USE_EPOLL |
|
|
2378 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
2379 | #endif |
|
|
2380 | #if EV_USE_POLL |
|
|
2381 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
2382 | #endif |
|
|
2383 | #if EV_USE_SELECT |
|
|
2384 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
2385 | #endif |
|
|
2386 | |
|
|
2387 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2388 | |
|
|
2389 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2390 | ev_init (&pipe_w, pipecb); |
|
|
2391 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2392 | #endif |
|
|
2393 | } |
|
|
2394 | } |
|
|
2395 | |
|
|
2396 | /* free up a loop structure */ |
|
|
2397 | void ecb_cold |
|
|
2398 | ev_loop_destroy (EV_P) |
|
|
2399 | { |
|
|
2400 | int i; |
|
|
2401 | |
|
|
2402 | #if EV_MULTIPLICITY |
|
|
2403 | /* mimic free (0) */ |
|
|
2404 | if (!EV_A) |
|
|
2405 | return; |
|
|
2406 | #endif |
|
|
2407 | |
|
|
2408 | #if EV_CLEANUP_ENABLE |
|
|
2409 | /* queue cleanup watchers (and execute them) */ |
|
|
2410 | if (expect_false (cleanupcnt)) |
|
|
2411 | { |
|
|
2412 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2413 | EV_INVOKE_PENDING; |
|
|
2414 | } |
|
|
2415 | #endif |
|
|
2416 | |
|
|
2417 | #if EV_CHILD_ENABLE |
|
|
2418 | if (ev_is_default_loop (EV_A) && ev_is_active (&childev)) |
|
|
2419 | { |
|
|
2420 | ev_ref (EV_A); /* child watcher */ |
|
|
2421 | ev_signal_stop (EV_A_ &childev); |
|
|
2422 | } |
|
|
2423 | #endif |
|
|
2424 | |
|
|
2425 | if (ev_is_active (&pipe_w)) |
|
|
2426 | { |
|
|
2427 | /*ev_ref (EV_A);*/ |
|
|
2428 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
2429 | |
|
|
2430 | #if EV_USE_EVENTFD |
|
|
2431 | if (evfd >= 0) |
|
|
2432 | close (evfd); |
|
|
2433 | #endif |
|
|
2434 | |
|
|
2435 | if (evpipe [0] >= 0) |
|
|
2436 | { |
|
|
2437 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2438 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2439 | } |
|
|
2440 | } |
|
|
2441 | |
|
|
2442 | #if EV_USE_SIGNALFD |
|
|
2443 | if (ev_is_active (&sigfd_w)) |
|
|
2444 | close (sigfd); |
|
|
2445 | #endif |
|
|
2446 | |
|
|
2447 | #if EV_USE_INOTIFY |
|
|
2448 | if (fs_fd >= 0) |
|
|
2449 | close (fs_fd); |
|
|
2450 | #endif |
|
|
2451 | |
|
|
2452 | if (backend_fd >= 0) |
|
|
2453 | close (backend_fd); |
|
|
2454 | |
|
|
2455 | #if EV_USE_IOCP |
|
|
2456 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2457 | #endif |
|
|
2458 | #if EV_USE_PORT |
|
|
2459 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
2460 | #endif |
|
|
2461 | #if EV_USE_KQUEUE |
|
|
2462 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
2463 | #endif |
|
|
2464 | #if EV_USE_EPOLL |
|
|
2465 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
2466 | #endif |
|
|
2467 | #if EV_USE_POLL |
|
|
2468 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
2469 | #endif |
|
|
2470 | #if EV_USE_SELECT |
|
|
2471 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
2472 | #endif |
|
|
2473 | |
|
|
2474 | for (i = NUMPRI; i--; ) |
|
|
2475 | { |
|
|
2476 | array_free (pending, [i]); |
|
|
2477 | #if EV_IDLE_ENABLE |
|
|
2478 | array_free (idle, [i]); |
|
|
2479 | #endif |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
2483 | |
|
|
2484 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
2485 | array_free (rfeed, EMPTY); |
|
|
2486 | array_free (fdchange, EMPTY); |
|
|
2487 | array_free (timer, EMPTY); |
|
|
2488 | #if EV_PERIODIC_ENABLE |
|
|
2489 | array_free (periodic, EMPTY); |
|
|
2490 | #endif |
|
|
2491 | #if EV_FORK_ENABLE |
|
|
2492 | array_free (fork, EMPTY); |
|
|
2493 | #endif |
|
|
2494 | #if EV_CLEANUP_ENABLE |
|
|
2495 | array_free (cleanup, EMPTY); |
|
|
2496 | #endif |
|
|
2497 | array_free (prepare, EMPTY); |
|
|
2498 | array_free (check, EMPTY); |
|
|
2499 | #if EV_ASYNC_ENABLE |
|
|
2500 | array_free (async, EMPTY); |
|
|
2501 | #endif |
|
|
2502 | |
|
|
2503 | backend = 0; |
|
|
2504 | |
|
|
2505 | #if EV_MULTIPLICITY |
|
|
2506 | if (ev_is_default_loop (EV_A)) |
|
|
2507 | #endif |
|
|
2508 | ev_default_loop_ptr = 0; |
|
|
2509 | #if EV_MULTIPLICITY |
|
|
2510 | else |
|
|
2511 | ev_free (EV_A); |
|
|
2512 | #endif |
|
|
2513 | } |
|
|
2514 | |
|
|
2515 | #if EV_USE_INOTIFY |
|
|
2516 | inline_size void infy_fork (EV_P); |
|
|
2517 | #endif |
|
|
2518 | |
|
|
2519 | inline_size void |
|
|
2520 | loop_fork (EV_P) |
|
|
2521 | { |
|
|
2522 | #if EV_USE_PORT |
|
|
2523 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
2524 | #endif |
|
|
2525 | #if EV_USE_KQUEUE |
|
|
2526 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
2527 | #endif |
|
|
2528 | #if EV_USE_EPOLL |
|
|
2529 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
2530 | #endif |
|
|
2531 | #if EV_USE_INOTIFY |
|
|
2532 | infy_fork (EV_A); |
|
|
2533 | #endif |
|
|
2534 | |
|
|
2535 | if (ev_is_active (&pipe_w)) |
|
|
2536 | { |
|
|
2537 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
2538 | |
|
|
2539 | ev_ref (EV_A); |
|
|
2540 | ev_io_stop (EV_A_ &pipe_w); |
|
|
2541 | |
|
|
2542 | #if EV_USE_EVENTFD |
|
|
2543 | if (evfd >= 0) |
|
|
2544 | close (evfd); |
|
|
2545 | #endif |
|
|
2546 | |
|
|
2547 | if (evpipe [0] >= 0) |
|
|
2548 | { |
|
|
2549 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2550 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2551 | } |
|
|
2552 | |
|
|
2553 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2554 | evpipe_init (EV_A); |
|
|
2555 | /* iterate over everything, in case we missed something before */ |
|
|
2556 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2557 | #endif |
|
|
2558 | } |
|
|
2559 | |
|
|
2560 | postfork = 0; |
|
|
2561 | } |
|
|
2562 | |
|
|
2563 | #if EV_MULTIPLICITY |
|
|
2564 | |
|
|
2565 | struct ev_loop * ecb_cold |
|
|
2566 | ev_loop_new (unsigned int flags) EV_THROW |
|
|
2567 | { |
|
|
2568 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
2569 | |
|
|
2570 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
2571 | loop_init (EV_A_ flags); |
|
|
2572 | |
|
|
2573 | if (ev_backend (EV_A)) |
|
|
2574 | return EV_A; |
|
|
2575 | |
|
|
2576 | ev_free (EV_A); |
|
|
2577 | return 0; |
|
|
2578 | } |
|
|
2579 | |
|
|
2580 | #endif /* multiplicity */ |
|
|
2581 | |
|
|
2582 | #if EV_VERIFY |
|
|
2583 | static void noinline ecb_cold |
|
|
2584 | verify_watcher (EV_P_ W w) |
|
|
2585 | { |
|
|
2586 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
2587 | |
|
|
2588 | if (w->pending) |
|
|
2589 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
2590 | } |
|
|
2591 | |
|
|
2592 | static void noinline ecb_cold |
|
|
2593 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
2594 | { |
|
|
2595 | int i; |
|
|
2596 | |
|
|
2597 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
2598 | { |
|
|
2599 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
2600 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
2601 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
2602 | |
|
|
2603 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
2604 | } |
|
|
2605 | } |
|
|
2606 | |
|
|
2607 | static void noinline ecb_cold |
|
|
2608 | array_verify (EV_P_ W *ws, int cnt) |
|
|
2609 | { |
|
|
2610 | while (cnt--) |
|
|
2611 | { |
|
|
2612 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
2613 | verify_watcher (EV_A_ ws [cnt]); |
|
|
2614 | } |
|
|
2615 | } |
|
|
2616 | #endif |
|
|
2617 | |
|
|
2618 | #if EV_FEATURE_API |
|
|
2619 | void ecb_cold |
|
|
2620 | ev_verify (EV_P) EV_THROW |
|
|
2621 | { |
|
|
2622 | #if EV_VERIFY |
|
|
2623 | int i; |
|
|
2624 | WL w, w2; |
|
|
2625 | |
|
|
2626 | assert (activecnt >= -1); |
|
|
2627 | |
|
|
2628 | assert (fdchangemax >= fdchangecnt); |
|
|
2629 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2630 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
2631 | |
|
|
2632 | assert (anfdmax >= 0); |
|
|
2633 | for (i = 0; i < anfdmax; ++i) |
|
|
2634 | { |
|
|
2635 | int j = 0; |
|
|
2636 | |
|
|
2637 | for (w = w2 = anfds [i].head; w; w = w->next) |
|
|
2638 | { |
|
|
2639 | verify_watcher (EV_A_ (W)w); |
|
|
2640 | |
|
|
2641 | if (j++ & 1) |
|
|
2642 | { |
|
|
2643 | assert (("libev: io watcher list contains a loop", w != w2)); |
|
|
2644 | w2 = w2->next; |
|
|
2645 | } |
|
|
2646 | |
|
|
2647 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
2648 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
2649 | } |
|
|
2650 | } |
|
|
2651 | |
|
|
2652 | assert (timermax >= timercnt); |
|
|
2653 | verify_heap (EV_A_ timers, timercnt); |
|
|
2654 | |
|
|
2655 | #if EV_PERIODIC_ENABLE |
|
|
2656 | assert (periodicmax >= periodiccnt); |
|
|
2657 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
2658 | #endif |
|
|
2659 | |
|
|
2660 | for (i = NUMPRI; i--; ) |
|
|
2661 | { |
|
|
2662 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2663 | #if EV_IDLE_ENABLE |
|
|
2664 | assert (idleall >= 0); |
|
|
2665 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2666 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2667 | #endif |
|
|
2668 | } |
|
|
2669 | |
|
|
2670 | #if EV_FORK_ENABLE |
|
|
2671 | assert (forkmax >= forkcnt); |
|
|
2672 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
2673 | #endif |
|
|
2674 | |
|
|
2675 | #if EV_CLEANUP_ENABLE |
|
|
2676 | assert (cleanupmax >= cleanupcnt); |
|
|
2677 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2678 | #endif |
|
|
2679 | |
|
|
2680 | #if EV_ASYNC_ENABLE |
|
|
2681 | assert (asyncmax >= asynccnt); |
|
|
2682 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
2683 | #endif |
|
|
2684 | |
|
|
2685 | #if EV_PREPARE_ENABLE |
|
|
2686 | assert (preparemax >= preparecnt); |
|
|
2687 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2688 | #endif |
|
|
2689 | |
|
|
2690 | #if EV_CHECK_ENABLE |
|
|
2691 | assert (checkmax >= checkcnt); |
|
|
2692 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
2693 | #endif |
|
|
2694 | |
|
|
2695 | # if 0 |
|
|
2696 | #if EV_CHILD_ENABLE |
|
|
2697 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2698 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
2699 | #endif |
|
|
2700 | # endif |
|
|
2701 | #endif |
|
|
2702 | } |
|
|
2703 | #endif |
|
|
2704 | |
|
|
2705 | #if EV_MULTIPLICITY |
|
|
2706 | struct ev_loop * ecb_cold |
|
|
2707 | #else |
439 | int |
2708 | int |
440 | ev_version_major (void) |
2709 | #endif |
|
|
2710 | ev_default_loop (unsigned int flags) EV_THROW |
441 | { |
2711 | { |
442 | return EV_VERSION_MAJOR; |
2712 | if (!ev_default_loop_ptr) |
|
|
2713 | { |
|
|
2714 | #if EV_MULTIPLICITY |
|
|
2715 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
|
|
2716 | #else |
|
|
2717 | ev_default_loop_ptr = 1; |
|
|
2718 | #endif |
|
|
2719 | |
|
|
2720 | loop_init (EV_A_ flags); |
|
|
2721 | |
|
|
2722 | if (ev_backend (EV_A)) |
|
|
2723 | { |
|
|
2724 | #if EV_CHILD_ENABLE |
|
|
2725 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
2726 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
2727 | ev_signal_start (EV_A_ &childev); |
|
|
2728 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
2729 | #endif |
|
|
2730 | } |
|
|
2731 | else |
|
|
2732 | ev_default_loop_ptr = 0; |
|
|
2733 | } |
|
|
2734 | |
|
|
2735 | return ev_default_loop_ptr; |
|
|
2736 | } |
|
|
2737 | |
|
|
2738 | void |
|
|
2739 | ev_loop_fork (EV_P) EV_THROW |
|
|
2740 | { |
|
|
2741 | postfork = 1; |
|
|
2742 | } |
|
|
2743 | |
|
|
2744 | /*****************************************************************************/ |
|
|
2745 | |
|
|
2746 | void |
|
|
2747 | ev_invoke (EV_P_ void *w, int revents) |
|
|
2748 | { |
|
|
2749 | EV_CB_INVOKE ((W)w, revents); |
|
|
2750 | } |
|
|
2751 | |
|
|
2752 | unsigned int |
|
|
2753 | ev_pending_count (EV_P) EV_THROW |
|
|
2754 | { |
|
|
2755 | int pri; |
|
|
2756 | unsigned int count = 0; |
|
|
2757 | |
|
|
2758 | for (pri = NUMPRI; pri--; ) |
|
|
2759 | count += pendingcnt [pri]; |
|
|
2760 | |
|
|
2761 | return count; |
|
|
2762 | } |
|
|
2763 | |
|
|
2764 | void noinline |
|
|
2765 | ev_invoke_pending (EV_P) |
|
|
2766 | { |
|
|
2767 | for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */ |
|
|
2768 | while (pendingcnt [pendingpri]) |
|
|
2769 | { |
|
|
2770 | ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri]; |
|
|
2771 | |
|
|
2772 | p->w->pending = 0; |
|
|
2773 | EV_CB_INVOKE (p->w, p->events); |
|
|
2774 | EV_FREQUENT_CHECK; |
|
|
2775 | } |
|
|
2776 | } |
|
|
2777 | |
|
|
2778 | #if EV_IDLE_ENABLE |
|
|
2779 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2780 | /* only when higher priorities are idle" logic */ |
|
|
2781 | inline_size void |
|
|
2782 | idle_reify (EV_P) |
|
|
2783 | { |
|
|
2784 | if (expect_false (idleall)) |
|
|
2785 | { |
|
|
2786 | int pri; |
|
|
2787 | |
|
|
2788 | for (pri = NUMPRI; pri--; ) |
|
|
2789 | { |
|
|
2790 | if (pendingcnt [pri]) |
|
|
2791 | break; |
|
|
2792 | |
|
|
2793 | if (idlecnt [pri]) |
|
|
2794 | { |
|
|
2795 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
2796 | break; |
|
|
2797 | } |
|
|
2798 | } |
|
|
2799 | } |
|
|
2800 | } |
|
|
2801 | #endif |
|
|
2802 | |
|
|
2803 | /* make timers pending */ |
|
|
2804 | inline_size void |
|
|
2805 | timers_reify (EV_P) |
|
|
2806 | { |
|
|
2807 | EV_FREQUENT_CHECK; |
|
|
2808 | |
|
|
2809 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
|
|
2810 | { |
|
|
2811 | do |
|
|
2812 | { |
|
|
2813 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2814 | |
|
|
2815 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2816 | |
|
|
2817 | /* first reschedule or stop timer */ |
|
|
2818 | if (w->repeat) |
|
|
2819 | { |
|
|
2820 | ev_at (w) += w->repeat; |
|
|
2821 | if (ev_at (w) < mn_now) |
|
|
2822 | ev_at (w) = mn_now; |
|
|
2823 | |
|
|
2824 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
2825 | |
|
|
2826 | ANHE_at_cache (timers [HEAP0]); |
|
|
2827 | downheap (timers, timercnt, HEAP0); |
|
|
2828 | } |
|
|
2829 | else |
|
|
2830 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2831 | |
|
|
2832 | EV_FREQUENT_CHECK; |
|
|
2833 | feed_reverse (EV_A_ (W)w); |
|
|
2834 | } |
|
|
2835 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
2836 | |
|
|
2837 | feed_reverse_done (EV_A_ EV_TIMER); |
|
|
2838 | } |
|
|
2839 | } |
|
|
2840 | |
|
|
2841 | #if EV_PERIODIC_ENABLE |
|
|
2842 | |
|
|
2843 | static void noinline |
|
|
2844 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2845 | { |
|
|
2846 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2847 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2848 | |
|
|
2849 | /* the above almost always errs on the low side */ |
|
|
2850 | while (at <= ev_rt_now) |
|
|
2851 | { |
|
|
2852 | ev_tstamp nat = at + w->interval; |
|
|
2853 | |
|
|
2854 | /* when resolution fails us, we use ev_rt_now */ |
|
|
2855 | if (expect_false (nat == at)) |
|
|
2856 | { |
|
|
2857 | at = ev_rt_now; |
|
|
2858 | break; |
|
|
2859 | } |
|
|
2860 | |
|
|
2861 | at = nat; |
|
|
2862 | } |
|
|
2863 | |
|
|
2864 | ev_at (w) = at; |
|
|
2865 | } |
|
|
2866 | |
|
|
2867 | /* make periodics pending */ |
|
|
2868 | inline_size void |
|
|
2869 | periodics_reify (EV_P) |
|
|
2870 | { |
|
|
2871 | EV_FREQUENT_CHECK; |
|
|
2872 | |
|
|
2873 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
2874 | { |
|
|
2875 | do |
|
|
2876 | { |
|
|
2877 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2878 | |
|
|
2879 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
2880 | |
|
|
2881 | /* first reschedule or stop timer */ |
|
|
2882 | if (w->reschedule_cb) |
|
|
2883 | { |
|
|
2884 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2885 | |
|
|
2886 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2887 | |
|
|
2888 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2889 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2890 | } |
|
|
2891 | else if (w->interval) |
|
|
2892 | { |
|
|
2893 | periodic_recalc (EV_A_ w); |
|
|
2894 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2895 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2896 | } |
|
|
2897 | else |
|
|
2898 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2899 | |
|
|
2900 | EV_FREQUENT_CHECK; |
|
|
2901 | feed_reverse (EV_A_ (W)w); |
|
|
2902 | } |
|
|
2903 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2904 | |
|
|
2905 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2906 | } |
|
|
2907 | } |
|
|
2908 | |
|
|
2909 | /* simply recalculate all periodics */ |
|
|
2910 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
2911 | static void noinline ecb_cold |
|
|
2912 | periodics_reschedule (EV_P) |
|
|
2913 | { |
|
|
2914 | int i; |
|
|
2915 | |
|
|
2916 | /* adjust periodics after time jump */ |
|
|
2917 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2918 | { |
|
|
2919 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2920 | |
|
|
2921 | if (w->reschedule_cb) |
|
|
2922 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2923 | else if (w->interval) |
|
|
2924 | periodic_recalc (EV_A_ w); |
|
|
2925 | |
|
|
2926 | ANHE_at_cache (periodics [i]); |
|
|
2927 | } |
|
|
2928 | |
|
|
2929 | reheap (periodics, periodiccnt); |
|
|
2930 | } |
|
|
2931 | #endif |
|
|
2932 | |
|
|
2933 | /* adjust all timers by a given offset */ |
|
|
2934 | static void noinline ecb_cold |
|
|
2935 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2936 | { |
|
|
2937 | int i; |
|
|
2938 | |
|
|
2939 | for (i = 0; i < timercnt; ++i) |
|
|
2940 | { |
|
|
2941 | ANHE *he = timers + i + HEAP0; |
|
|
2942 | ANHE_w (*he)->at += adjust; |
|
|
2943 | ANHE_at_cache (*he); |
|
|
2944 | } |
|
|
2945 | } |
|
|
2946 | |
|
|
2947 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2948 | /* also detect if there was a timejump, and act accordingly */ |
|
|
2949 | inline_speed void |
|
|
2950 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2951 | { |
|
|
2952 | #if EV_USE_MONOTONIC |
|
|
2953 | if (expect_true (have_monotonic)) |
|
|
2954 | { |
|
|
2955 | int i; |
|
|
2956 | ev_tstamp odiff = rtmn_diff; |
|
|
2957 | |
|
|
2958 | mn_now = get_clock (); |
|
|
2959 | |
|
|
2960 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2961 | /* interpolate in the meantime */ |
|
|
2962 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
2963 | { |
|
|
2964 | ev_rt_now = rtmn_diff + mn_now; |
|
|
2965 | return; |
|
|
2966 | } |
|
|
2967 | |
|
|
2968 | now_floor = mn_now; |
|
|
2969 | ev_rt_now = ev_time (); |
|
|
2970 | |
|
|
2971 | /* loop a few times, before making important decisions. |
|
|
2972 | * on the choice of "4": one iteration isn't enough, |
|
|
2973 | * in case we get preempted during the calls to |
|
|
2974 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
2975 | * to succeed in that case, though. and looping a few more times |
|
|
2976 | * doesn't hurt either as we only do this on time-jumps or |
|
|
2977 | * in the unlikely event of having been preempted here. |
|
|
2978 | */ |
|
|
2979 | for (i = 4; --i; ) |
|
|
2980 | { |
|
|
2981 | ev_tstamp diff; |
|
|
2982 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2983 | |
|
|
2984 | diff = odiff - rtmn_diff; |
|
|
2985 | |
|
|
2986 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
|
|
2987 | return; /* all is well */ |
|
|
2988 | |
|
|
2989 | ev_rt_now = ev_time (); |
|
|
2990 | mn_now = get_clock (); |
|
|
2991 | now_floor = mn_now; |
|
|
2992 | } |
|
|
2993 | |
|
|
2994 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2995 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2996 | # if EV_PERIODIC_ENABLE |
|
|
2997 | periodics_reschedule (EV_A); |
|
|
2998 | # endif |
|
|
2999 | } |
|
|
3000 | else |
|
|
3001 | #endif |
|
|
3002 | { |
|
|
3003 | ev_rt_now = ev_time (); |
|
|
3004 | |
|
|
3005 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
3006 | { |
|
|
3007 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
3008 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
3009 | #if EV_PERIODIC_ENABLE |
|
|
3010 | periodics_reschedule (EV_A); |
|
|
3011 | #endif |
|
|
3012 | } |
|
|
3013 | |
|
|
3014 | mn_now = ev_rt_now; |
|
|
3015 | } |
443 | } |
3016 | } |
444 | |
3017 | |
445 | int |
3018 | int |
446 | ev_version_minor (void) |
3019 | ev_run (EV_P_ int flags) |
447 | { |
3020 | { |
448 | return EV_VERSION_MINOR; |
3021 | #if EV_FEATURE_API |
449 | } |
3022 | ++loop_depth; |
|
|
3023 | #endif |
450 | |
3024 | |
451 | int ev_init (int flags) |
3025 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
452 | { |
3026 | |
453 | if (!ev_method) |
3027 | loop_done = EVBREAK_CANCEL; |
|
|
3028 | |
|
|
3029 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
3030 | |
|
|
3031 | do |
454 | { |
3032 | { |
455 | #if EV_USE_MONOTONIC |
3033 | #if EV_VERIFY >= 2 |
|
|
3034 | ev_verify (EV_A); |
|
|
3035 | #endif |
|
|
3036 | |
|
|
3037 | #ifndef _WIN32 |
|
|
3038 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
3039 | if (expect_false (getpid () != curpid)) |
|
|
3040 | { |
|
|
3041 | curpid = getpid (); |
|
|
3042 | postfork = 1; |
|
|
3043 | } |
|
|
3044 | #endif |
|
|
3045 | |
|
|
3046 | #if EV_FORK_ENABLE |
|
|
3047 | /* we might have forked, so queue fork handlers */ |
|
|
3048 | if (expect_false (postfork)) |
|
|
3049 | if (forkcnt) |
|
|
3050 | { |
|
|
3051 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
3052 | EV_INVOKE_PENDING; |
|
|
3053 | } |
|
|
3054 | #endif |
|
|
3055 | |
|
|
3056 | #if EV_PREPARE_ENABLE |
|
|
3057 | /* queue prepare watchers (and execute them) */ |
|
|
3058 | if (expect_false (preparecnt)) |
|
|
3059 | { |
|
|
3060 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
3061 | EV_INVOKE_PENDING; |
|
|
3062 | } |
|
|
3063 | #endif |
|
|
3064 | |
|
|
3065 | if (expect_false (loop_done)) |
|
|
3066 | break; |
|
|
3067 | |
|
|
3068 | /* we might have forked, so reify kernel state if necessary */ |
|
|
3069 | if (expect_false (postfork)) |
|
|
3070 | loop_fork (EV_A); |
|
|
3071 | |
|
|
3072 | /* update fd-related kernel structures */ |
|
|
3073 | fd_reify (EV_A); |
|
|
3074 | |
|
|
3075 | /* calculate blocking time */ |
456 | { |
3076 | { |
457 | struct timespec ts; |
3077 | ev_tstamp waittime = 0.; |
458 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
3078 | ev_tstamp sleeptime = 0.; |
459 | have_monotonic = 1; |
3079 | |
|
|
3080 | /* remember old timestamp for io_blocktime calculation */ |
|
|
3081 | ev_tstamp prev_mn_now = mn_now; |
|
|
3082 | |
|
|
3083 | /* update time to cancel out callback processing overhead */ |
|
|
3084 | time_update (EV_A_ 1e100); |
|
|
3085 | |
|
|
3086 | /* from now on, we want a pipe-wake-up */ |
|
|
3087 | pipe_write_wanted = 1; |
|
|
3088 | |
|
|
3089 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
3090 | |
|
|
3091 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
|
|
3092 | { |
|
|
3093 | waittime = MAX_BLOCKTIME; |
|
|
3094 | |
|
|
3095 | if (timercnt) |
|
|
3096 | { |
|
|
3097 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
|
|
3098 | if (waittime > to) waittime = to; |
|
|
3099 | } |
|
|
3100 | |
|
|
3101 | #if EV_PERIODIC_ENABLE |
|
|
3102 | if (periodiccnt) |
|
|
3103 | { |
|
|
3104 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
|
|
3105 | if (waittime > to) waittime = to; |
|
|
3106 | } |
|
|
3107 | #endif |
|
|
3108 | |
|
|
3109 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
3110 | if (expect_false (waittime < timeout_blocktime)) |
|
|
3111 | waittime = timeout_blocktime; |
|
|
3112 | |
|
|
3113 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
3114 | /* to pass a minimum nonzero value to the backend */ |
|
|
3115 | if (expect_false (waittime < backend_mintime)) |
|
|
3116 | waittime = backend_mintime; |
|
|
3117 | |
|
|
3118 | /* extra check because io_blocktime is commonly 0 */ |
|
|
3119 | if (expect_false (io_blocktime)) |
|
|
3120 | { |
|
|
3121 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
3122 | |
|
|
3123 | if (sleeptime > waittime - backend_mintime) |
|
|
3124 | sleeptime = waittime - backend_mintime; |
|
|
3125 | |
|
|
3126 | if (expect_true (sleeptime > 0.)) |
|
|
3127 | { |
|
|
3128 | ev_sleep (sleeptime); |
|
|
3129 | waittime -= sleeptime; |
|
|
3130 | } |
|
|
3131 | } |
|
|
3132 | } |
|
|
3133 | |
|
|
3134 | #if EV_FEATURE_API |
|
|
3135 | ++loop_count; |
|
|
3136 | #endif |
|
|
3137 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
3138 | backend_poll (EV_A_ waittime); |
|
|
3139 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
|
|
3140 | |
|
|
3141 | pipe_write_wanted = 0; /* just an optimisation, no fence needed */ |
|
|
3142 | |
|
|
3143 | ECB_MEMORY_FENCE_ACQUIRE; |
|
|
3144 | if (pipe_write_skipped) |
|
|
3145 | { |
|
|
3146 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
3147 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
3148 | } |
|
|
3149 | |
|
|
3150 | |
|
|
3151 | /* update ev_rt_now, do magic */ |
|
|
3152 | time_update (EV_A_ waittime + sleeptime); |
460 | } |
3153 | } |
461 | #endif |
|
|
462 | |
3154 | |
463 | ev_now = ev_time (); |
3155 | /* queue pending timers and reschedule them */ |
464 | now = get_clock (); |
3156 | timers_reify (EV_A); /* relative timers called last */ |
465 | diff = ev_now - now; |
3157 | #if EV_PERIODIC_ENABLE |
466 | |
3158 | periodics_reify (EV_A); /* absolute timers called first */ |
467 | if (pipe (sigpipe)) |
|
|
468 | return 0; |
|
|
469 | |
|
|
470 | ev_method = EVMETHOD_NONE; |
|
|
471 | #if EV_USE_EPOLL |
|
|
472 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
473 | #endif |
3159 | #endif |
474 | #if EV_USE_SELECT |
|
|
475 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
476 | #endif |
|
|
477 | |
3160 | |
478 | if (ev_method) |
3161 | #if EV_IDLE_ENABLE |
|
|
3162 | /* queue idle watchers unless other events are pending */ |
|
|
3163 | idle_reify (EV_A); |
|
|
3164 | #endif |
|
|
3165 | |
|
|
3166 | #if EV_CHECK_ENABLE |
|
|
3167 | /* queue check watchers, to be executed first */ |
|
|
3168 | if (expect_false (checkcnt)) |
|
|
3169 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3170 | #endif |
|
|
3171 | |
|
|
3172 | EV_INVOKE_PENDING; |
|
|
3173 | } |
|
|
3174 | while (expect_true ( |
|
|
3175 | activecnt |
|
|
3176 | && !loop_done |
|
|
3177 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3178 | )); |
|
|
3179 | |
|
|
3180 | if (loop_done == EVBREAK_ONE) |
|
|
3181 | loop_done = EVBREAK_CANCEL; |
|
|
3182 | |
|
|
3183 | #if EV_FEATURE_API |
|
|
3184 | --loop_depth; |
|
|
3185 | #endif |
|
|
3186 | |
|
|
3187 | return activecnt; |
|
|
3188 | } |
|
|
3189 | |
|
|
3190 | void |
|
|
3191 | ev_break (EV_P_ int how) EV_THROW |
|
|
3192 | { |
|
|
3193 | loop_done = how; |
|
|
3194 | } |
|
|
3195 | |
|
|
3196 | void |
|
|
3197 | ev_ref (EV_P) EV_THROW |
|
|
3198 | { |
|
|
3199 | ++activecnt; |
|
|
3200 | } |
|
|
3201 | |
|
|
3202 | void |
|
|
3203 | ev_unref (EV_P) EV_THROW |
|
|
3204 | { |
|
|
3205 | --activecnt; |
|
|
3206 | } |
|
|
3207 | |
|
|
3208 | void |
|
|
3209 | ev_now_update (EV_P) EV_THROW |
|
|
3210 | { |
|
|
3211 | time_update (EV_A_ 1e100); |
|
|
3212 | } |
|
|
3213 | |
|
|
3214 | void |
|
|
3215 | ev_suspend (EV_P) EV_THROW |
|
|
3216 | { |
|
|
3217 | ev_now_update (EV_A); |
|
|
3218 | } |
|
|
3219 | |
|
|
3220 | void |
|
|
3221 | ev_resume (EV_P) EV_THROW |
|
|
3222 | { |
|
|
3223 | ev_tstamp mn_prev = mn_now; |
|
|
3224 | |
|
|
3225 | ev_now_update (EV_A); |
|
|
3226 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3227 | #if EV_PERIODIC_ENABLE |
|
|
3228 | /* TODO: really do this? */ |
|
|
3229 | periodics_reschedule (EV_A); |
|
|
3230 | #endif |
|
|
3231 | } |
|
|
3232 | |
|
|
3233 | /*****************************************************************************/ |
|
|
3234 | /* singly-linked list management, used when the expected list length is short */ |
|
|
3235 | |
|
|
3236 | inline_size void |
|
|
3237 | wlist_add (WL *head, WL elem) |
|
|
3238 | { |
|
|
3239 | elem->next = *head; |
|
|
3240 | *head = elem; |
|
|
3241 | } |
|
|
3242 | |
|
|
3243 | inline_size void |
|
|
3244 | wlist_del (WL *head, WL elem) |
|
|
3245 | { |
|
|
3246 | while (*head) |
|
|
3247 | { |
|
|
3248 | if (expect_true (*head == elem)) |
479 | { |
3249 | { |
480 | ev_watcher_init (&sigev, sigcb); |
3250 | *head = elem->next; |
481 | siginit (); |
3251 | break; |
482 | |
|
|
483 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
484 | ev_signal_start (&childev); |
|
|
485 | } |
3252 | } |
|
|
3253 | |
|
|
3254 | head = &(*head)->next; |
|
|
3255 | } |
|
|
3256 | } |
|
|
3257 | |
|
|
3258 | /* internal, faster, version of ev_clear_pending */ |
|
|
3259 | inline_speed void |
|
|
3260 | clear_pending (EV_P_ W w) |
|
|
3261 | { |
|
|
3262 | if (w->pending) |
486 | } |
3263 | { |
|
|
3264 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
|
|
3265 | w->pending = 0; |
|
|
3266 | } |
|
|
3267 | } |
487 | |
3268 | |
488 | return ev_method; |
3269 | int |
|
|
3270 | ev_clear_pending (EV_P_ void *w) EV_THROW |
|
|
3271 | { |
|
|
3272 | W w_ = (W)w; |
|
|
3273 | int pending = w_->pending; |
|
|
3274 | |
|
|
3275 | if (expect_true (pending)) |
|
|
3276 | { |
|
|
3277 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3278 | p->w = (W)&pending_w; |
|
|
3279 | w_->pending = 0; |
|
|
3280 | return p->events; |
|
|
3281 | } |
|
|
3282 | else |
|
|
3283 | return 0; |
|
|
3284 | } |
|
|
3285 | |
|
|
3286 | inline_size void |
|
|
3287 | pri_adjust (EV_P_ W w) |
|
|
3288 | { |
|
|
3289 | int pri = ev_priority (w); |
|
|
3290 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
3291 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
3292 | ev_set_priority (w, pri); |
|
|
3293 | } |
|
|
3294 | |
|
|
3295 | inline_speed void |
|
|
3296 | ev_start (EV_P_ W w, int active) |
|
|
3297 | { |
|
|
3298 | pri_adjust (EV_A_ w); |
|
|
3299 | w->active = active; |
|
|
3300 | ev_ref (EV_A); |
|
|
3301 | } |
|
|
3302 | |
|
|
3303 | inline_size void |
|
|
3304 | ev_stop (EV_P_ W w) |
|
|
3305 | { |
|
|
3306 | ev_unref (EV_A); |
|
|
3307 | w->active = 0; |
489 | } |
3308 | } |
490 | |
3309 | |
491 | /*****************************************************************************/ |
3310 | /*****************************************************************************/ |
492 | |
3311 | |
493 | void |
3312 | void noinline |
494 | ev_prefork (void) |
3313 | ev_io_start (EV_P_ ev_io *w) EV_THROW |
495 | { |
3314 | { |
496 | /* nop */ |
3315 | int fd = w->fd; |
497 | } |
|
|
498 | |
3316 | |
499 | void |
3317 | if (expect_false (ev_is_active (w))) |
500 | ev_postfork_parent (void) |
3318 | return; |
501 | { |
|
|
502 | /* nop */ |
|
|
503 | } |
|
|
504 | |
3319 | |
505 | void |
3320 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
506 | ev_postfork_child (void) |
3321 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
507 | { |
|
|
508 | #if EV_USE_EPOLL |
|
|
509 | if (ev_method == EVMETHOD_EPOLL) |
|
|
510 | epoll_postfork_child (); |
|
|
511 | #endif |
|
|
512 | |
3322 | |
513 | ev_io_stop (&sigev); |
3323 | EV_FREQUENT_CHECK; |
514 | close (sigpipe [0]); |
|
|
515 | close (sigpipe [1]); |
|
|
516 | pipe (sigpipe); |
|
|
517 | siginit (); |
|
|
518 | } |
|
|
519 | |
3324 | |
520 | /*****************************************************************************/ |
3325 | ev_start (EV_A_ (W)w, 1); |
|
|
3326 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
|
|
3327 | wlist_add (&anfds[fd].head, (WL)w); |
521 | |
3328 | |
522 | static void |
3329 | /* common bug, apparently */ |
523 | call_pending (void) |
3330 | assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w)); |
|
|
3331 | |
|
|
3332 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
|
|
3333 | w->events &= ~EV__IOFDSET; |
|
|
3334 | |
|
|
3335 | EV_FREQUENT_CHECK; |
|
|
3336 | } |
|
|
3337 | |
|
|
3338 | void noinline |
|
|
3339 | ev_io_stop (EV_P_ ev_io *w) EV_THROW |
524 | { |
3340 | { |
525 | while (pendingcnt) |
3341 | clear_pending (EV_A_ (W)w); |
|
|
3342 | if (expect_false (!ev_is_active (w))) |
|
|
3343 | return; |
|
|
3344 | |
|
|
3345 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
3346 | |
|
|
3347 | EV_FREQUENT_CHECK; |
|
|
3348 | |
|
|
3349 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
3350 | ev_stop (EV_A_ (W)w); |
|
|
3351 | |
|
|
3352 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
|
|
3353 | |
|
|
3354 | EV_FREQUENT_CHECK; |
|
|
3355 | } |
|
|
3356 | |
|
|
3357 | void noinline |
|
|
3358 | ev_timer_start (EV_P_ ev_timer *w) EV_THROW |
|
|
3359 | { |
|
|
3360 | if (expect_false (ev_is_active (w))) |
|
|
3361 | return; |
|
|
3362 | |
|
|
3363 | ev_at (w) += mn_now; |
|
|
3364 | |
|
|
3365 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
3366 | |
|
|
3367 | EV_FREQUENT_CHECK; |
|
|
3368 | |
|
|
3369 | ++timercnt; |
|
|
3370 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
3371 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
3372 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
3373 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3374 | upheap (timers, ev_active (w)); |
|
|
3375 | |
|
|
3376 | EV_FREQUENT_CHECK; |
|
|
3377 | |
|
|
3378 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
3379 | } |
|
|
3380 | |
|
|
3381 | void noinline |
|
|
3382 | ev_timer_stop (EV_P_ ev_timer *w) EV_THROW |
|
|
3383 | { |
|
|
3384 | clear_pending (EV_A_ (W)w); |
|
|
3385 | if (expect_false (!ev_is_active (w))) |
|
|
3386 | return; |
|
|
3387 | |
|
|
3388 | EV_FREQUENT_CHECK; |
|
|
3389 | |
526 | { |
3390 | { |
527 | ANPENDING *p = pendings + --pendingcnt; |
3391 | int active = ev_active (w); |
528 | |
3392 | |
529 | if (p->w) |
3393 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3394 | |
|
|
3395 | --timercnt; |
|
|
3396 | |
|
|
3397 | if (expect_true (active < timercnt + HEAP0)) |
530 | { |
3398 | { |
531 | p->w->pending = 0; |
3399 | timers [active] = timers [timercnt + HEAP0]; |
532 | p->w->cb (p->w, p->events); |
3400 | adjustheap (timers, timercnt, active); |
533 | } |
3401 | } |
|
|
3402 | } |
|
|
3403 | |
|
|
3404 | ev_at (w) -= mn_now; |
|
|
3405 | |
|
|
3406 | ev_stop (EV_A_ (W)w); |
|
|
3407 | |
|
|
3408 | EV_FREQUENT_CHECK; |
|
|
3409 | } |
|
|
3410 | |
|
|
3411 | void noinline |
|
|
3412 | ev_timer_again (EV_P_ ev_timer *w) EV_THROW |
|
|
3413 | { |
|
|
3414 | EV_FREQUENT_CHECK; |
|
|
3415 | |
|
|
3416 | clear_pending (EV_A_ (W)w); |
|
|
3417 | |
|
|
3418 | if (ev_is_active (w)) |
534 | } |
3419 | { |
535 | } |
|
|
536 | |
|
|
537 | static void |
|
|
538 | timers_reify (void) |
|
|
539 | { |
|
|
540 | while (timercnt && timers [0]->at <= now) |
|
|
541 | { |
|
|
542 | struct ev_timer *w = timers [0]; |
|
|
543 | |
|
|
544 | /* first reschedule or stop timer */ |
|
|
545 | if (w->repeat) |
3420 | if (w->repeat) |
546 | { |
3421 | { |
547 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
548 | w->at = now + w->repeat; |
3422 | ev_at (w) = mn_now + w->repeat; |
549 | downheap ((WT *)timers, timercnt, 0); |
3423 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
3424 | adjustheap (timers, timercnt, ev_active (w)); |
550 | } |
3425 | } |
551 | else |
3426 | else |
552 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
3427 | ev_timer_stop (EV_A_ w); |
553 | |
|
|
554 | event ((W)w, EV_TIMEOUT); |
|
|
555 | } |
|
|
556 | } |
|
|
557 | |
|
|
558 | static void |
|
|
559 | periodics_reify (void) |
|
|
560 | { |
|
|
561 | while (periodiccnt && periodics [0]->at <= ev_now) |
|
|
562 | { |
3428 | } |
563 | struct ev_periodic *w = periodics [0]; |
3429 | else if (w->repeat) |
|
|
3430 | { |
|
|
3431 | ev_at (w) = w->repeat; |
|
|
3432 | ev_timer_start (EV_A_ w); |
|
|
3433 | } |
564 | |
3434 | |
565 | /* first reschedule or stop timer */ |
3435 | EV_FREQUENT_CHECK; |
|
|
3436 | } |
|
|
3437 | |
|
|
3438 | ev_tstamp |
|
|
3439 | ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW |
|
|
3440 | { |
|
|
3441 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
3442 | } |
|
|
3443 | |
|
|
3444 | #if EV_PERIODIC_ENABLE |
|
|
3445 | void noinline |
|
|
3446 | ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW |
|
|
3447 | { |
|
|
3448 | if (expect_false (ev_is_active (w))) |
|
|
3449 | return; |
|
|
3450 | |
|
|
3451 | if (w->reschedule_cb) |
|
|
3452 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
566 | if (w->interval) |
3453 | else if (w->interval) |
|
|
3454 | { |
|
|
3455 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
3456 | periodic_recalc (EV_A_ w); |
|
|
3457 | } |
|
|
3458 | else |
|
|
3459 | ev_at (w) = w->offset; |
|
|
3460 | |
|
|
3461 | EV_FREQUENT_CHECK; |
|
|
3462 | |
|
|
3463 | ++periodiccnt; |
|
|
3464 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
|
|
3465 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
|
|
3466 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
3467 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
3468 | upheap (periodics, ev_active (w)); |
|
|
3469 | |
|
|
3470 | EV_FREQUENT_CHECK; |
|
|
3471 | |
|
|
3472 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
3473 | } |
|
|
3474 | |
|
|
3475 | void noinline |
|
|
3476 | ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW |
|
|
3477 | { |
|
|
3478 | clear_pending (EV_A_ (W)w); |
|
|
3479 | if (expect_false (!ev_is_active (w))) |
|
|
3480 | return; |
|
|
3481 | |
|
|
3482 | EV_FREQUENT_CHECK; |
|
|
3483 | |
|
|
3484 | { |
|
|
3485 | int active = ev_active (w); |
|
|
3486 | |
|
|
3487 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
3488 | |
|
|
3489 | --periodiccnt; |
|
|
3490 | |
|
|
3491 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
3492 | { |
|
|
3493 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
3494 | adjustheap (periodics, periodiccnt, active); |
|
|
3495 | } |
|
|
3496 | } |
|
|
3497 | |
|
|
3498 | ev_stop (EV_A_ (W)w); |
|
|
3499 | |
|
|
3500 | EV_FREQUENT_CHECK; |
|
|
3501 | } |
|
|
3502 | |
|
|
3503 | void noinline |
|
|
3504 | ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW |
|
|
3505 | { |
|
|
3506 | /* TODO: use adjustheap and recalculation */ |
|
|
3507 | ev_periodic_stop (EV_A_ w); |
|
|
3508 | ev_periodic_start (EV_A_ w); |
|
|
3509 | } |
|
|
3510 | #endif |
|
|
3511 | |
|
|
3512 | #ifndef SA_RESTART |
|
|
3513 | # define SA_RESTART 0 |
|
|
3514 | #endif |
|
|
3515 | |
|
|
3516 | #if EV_SIGNAL_ENABLE |
|
|
3517 | |
|
|
3518 | void noinline |
|
|
3519 | ev_signal_start (EV_P_ ev_signal *w) EV_THROW |
|
|
3520 | { |
|
|
3521 | if (expect_false (ev_is_active (w))) |
|
|
3522 | return; |
|
|
3523 | |
|
|
3524 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
3525 | |
|
|
3526 | #if EV_MULTIPLICITY |
|
|
3527 | assert (("libev: a signal must not be attached to two different loops", |
|
|
3528 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
3529 | |
|
|
3530 | signals [w->signum - 1].loop = EV_A; |
|
|
3531 | #endif |
|
|
3532 | |
|
|
3533 | EV_FREQUENT_CHECK; |
|
|
3534 | |
|
|
3535 | #if EV_USE_SIGNALFD |
|
|
3536 | if (sigfd == -2) |
|
|
3537 | { |
|
|
3538 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
3539 | if (sigfd < 0 && errno == EINVAL) |
|
|
3540 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
3541 | |
|
|
3542 | if (sigfd >= 0) |
567 | { |
3543 | { |
568 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
3544 | fd_intern (sigfd); /* doing it twice will not hurt */ |
569 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
3545 | |
570 | downheap ((WT *)periodics, periodiccnt, 0); |
3546 | sigemptyset (&sigfd_set); |
|
|
3547 | |
|
|
3548 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
3549 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
3550 | ev_io_start (EV_A_ &sigfd_w); |
|
|
3551 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
3552 | } |
|
|
3553 | } |
|
|
3554 | |
|
|
3555 | if (sigfd >= 0) |
|
|
3556 | { |
|
|
3557 | /* TODO: check .head */ |
|
|
3558 | sigaddset (&sigfd_set, w->signum); |
|
|
3559 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
3560 | |
|
|
3561 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3562 | } |
|
|
3563 | #endif |
|
|
3564 | |
|
|
3565 | ev_start (EV_A_ (W)w, 1); |
|
|
3566 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
3567 | |
|
|
3568 | if (!((WL)w)->next) |
|
|
3569 | # if EV_USE_SIGNALFD |
|
|
3570 | if (sigfd < 0) /*TODO*/ |
|
|
3571 | # endif |
|
|
3572 | { |
|
|
3573 | # ifdef _WIN32 |
|
|
3574 | evpipe_init (EV_A); |
|
|
3575 | |
|
|
3576 | signal (w->signum, ev_sighandler); |
|
|
3577 | # else |
|
|
3578 | struct sigaction sa; |
|
|
3579 | |
|
|
3580 | evpipe_init (EV_A); |
|
|
3581 | |
|
|
3582 | sa.sa_handler = ev_sighandler; |
|
|
3583 | sigfillset (&sa.sa_mask); |
|
|
3584 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
3585 | sigaction (w->signum, &sa, 0); |
|
|
3586 | |
|
|
3587 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3588 | { |
|
|
3589 | sigemptyset (&sa.sa_mask); |
|
|
3590 | sigaddset (&sa.sa_mask, w->signum); |
|
|
3591 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3592 | } |
|
|
3593 | #endif |
|
|
3594 | } |
|
|
3595 | |
|
|
3596 | EV_FREQUENT_CHECK; |
|
|
3597 | } |
|
|
3598 | |
|
|
3599 | void noinline |
|
|
3600 | ev_signal_stop (EV_P_ ev_signal *w) EV_THROW |
|
|
3601 | { |
|
|
3602 | clear_pending (EV_A_ (W)w); |
|
|
3603 | if (expect_false (!ev_is_active (w))) |
|
|
3604 | return; |
|
|
3605 | |
|
|
3606 | EV_FREQUENT_CHECK; |
|
|
3607 | |
|
|
3608 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
3609 | ev_stop (EV_A_ (W)w); |
|
|
3610 | |
|
|
3611 | if (!signals [w->signum - 1].head) |
|
|
3612 | { |
|
|
3613 | #if EV_MULTIPLICITY |
|
|
3614 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
3615 | #endif |
|
|
3616 | #if EV_USE_SIGNALFD |
|
|
3617 | if (sigfd >= 0) |
|
|
3618 | { |
|
|
3619 | sigset_t ss; |
|
|
3620 | |
|
|
3621 | sigemptyset (&ss); |
|
|
3622 | sigaddset (&ss, w->signum); |
|
|
3623 | sigdelset (&sigfd_set, w->signum); |
|
|
3624 | |
|
|
3625 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3626 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
571 | } |
3627 | } |
572 | else |
3628 | else |
573 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
3629 | #endif |
574 | |
3630 | signal (w->signum, SIG_DFL); |
575 | event ((W)w, EV_PERIODIC); |
|
|
576 | } |
|
|
577 | } |
|
|
578 | |
|
|
579 | static void |
|
|
580 | periodics_reschedule (ev_tstamp diff) |
|
|
581 | { |
|
|
582 | int i; |
|
|
583 | |
|
|
584 | /* adjust periodics after time jump */ |
|
|
585 | for (i = 0; i < periodiccnt; ++i) |
|
|
586 | { |
3631 | } |
587 | struct ev_periodic *w = periodics [i]; |
|
|
588 | |
3632 | |
589 | if (w->interval) |
3633 | EV_FREQUENT_CHECK; |
|
|
3634 | } |
|
|
3635 | |
|
|
3636 | #endif |
|
|
3637 | |
|
|
3638 | #if EV_CHILD_ENABLE |
|
|
3639 | |
|
|
3640 | void |
|
|
3641 | ev_child_start (EV_P_ ev_child *w) EV_THROW |
|
|
3642 | { |
|
|
3643 | #if EV_MULTIPLICITY |
|
|
3644 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
3645 | #endif |
|
|
3646 | if (expect_false (ev_is_active (w))) |
|
|
3647 | return; |
|
|
3648 | |
|
|
3649 | EV_FREQUENT_CHECK; |
|
|
3650 | |
|
|
3651 | ev_start (EV_A_ (W)w, 1); |
|
|
3652 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
3653 | |
|
|
3654 | EV_FREQUENT_CHECK; |
|
|
3655 | } |
|
|
3656 | |
|
|
3657 | void |
|
|
3658 | ev_child_stop (EV_P_ ev_child *w) EV_THROW |
|
|
3659 | { |
|
|
3660 | clear_pending (EV_A_ (W)w); |
|
|
3661 | if (expect_false (!ev_is_active (w))) |
|
|
3662 | return; |
|
|
3663 | |
|
|
3664 | EV_FREQUENT_CHECK; |
|
|
3665 | |
|
|
3666 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
|
|
3667 | ev_stop (EV_A_ (W)w); |
|
|
3668 | |
|
|
3669 | EV_FREQUENT_CHECK; |
|
|
3670 | } |
|
|
3671 | |
|
|
3672 | #endif |
|
|
3673 | |
|
|
3674 | #if EV_STAT_ENABLE |
|
|
3675 | |
|
|
3676 | # ifdef _WIN32 |
|
|
3677 | # undef lstat |
|
|
3678 | # define lstat(a,b) _stati64 (a,b) |
|
|
3679 | # endif |
|
|
3680 | |
|
|
3681 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
3682 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
3683 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
3684 | |
|
|
3685 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
3686 | |
|
|
3687 | #if EV_USE_INOTIFY |
|
|
3688 | |
|
|
3689 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
3690 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
3691 | |
|
|
3692 | static void noinline |
|
|
3693 | infy_add (EV_P_ ev_stat *w) |
|
|
3694 | { |
|
|
3695 | w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
|
|
3696 | |
|
|
3697 | if (w->wd >= 0) |
|
|
3698 | { |
|
|
3699 | struct statfs sfs; |
|
|
3700 | |
|
|
3701 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
3702 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
3703 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
3704 | |
|
|
3705 | if (!fs_2625) |
|
|
3706 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3707 | else if (!statfs (w->path, &sfs) |
|
|
3708 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3709 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3710 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3711 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
3712 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
3713 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
3714 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
3715 | else |
|
|
3716 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
3717 | } |
|
|
3718 | else |
|
|
3719 | { |
|
|
3720 | /* can't use inotify, continue to stat */ |
|
|
3721 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3722 | |
|
|
3723 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
3724 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
3725 | /* but an efficiency issue only */ |
|
|
3726 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
590 | { |
3727 | { |
591 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
3728 | char path [4096]; |
|
|
3729 | strcpy (path, w->path); |
592 | |
3730 | |
593 | if (fabs (diff) >= 1e-4) |
3731 | do |
594 | { |
3732 | { |
595 | ev_periodic_stop (w); |
3733 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
596 | ev_periodic_start (w); |
3734 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
597 | |
3735 | |
598 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
3736 | char *pend = strrchr (path, '/'); |
|
|
3737 | |
|
|
3738 | if (!pend || pend == path) |
|
|
3739 | break; |
|
|
3740 | |
|
|
3741 | *pend = 0; |
|
|
3742 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
3743 | } |
|
|
3744 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
3745 | } |
|
|
3746 | } |
|
|
3747 | |
|
|
3748 | if (w->wd >= 0) |
|
|
3749 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3750 | |
|
|
3751 | /* now re-arm timer, if required */ |
|
|
3752 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3753 | ev_timer_again (EV_A_ &w->timer); |
|
|
3754 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3755 | } |
|
|
3756 | |
|
|
3757 | static void noinline |
|
|
3758 | infy_del (EV_P_ ev_stat *w) |
|
|
3759 | { |
|
|
3760 | int slot; |
|
|
3761 | int wd = w->wd; |
|
|
3762 | |
|
|
3763 | if (wd < 0) |
|
|
3764 | return; |
|
|
3765 | |
|
|
3766 | w->wd = -2; |
|
|
3767 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
3768 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
3769 | |
|
|
3770 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
3771 | inotify_rm_watch (fs_fd, wd); |
|
|
3772 | } |
|
|
3773 | |
|
|
3774 | static void noinline |
|
|
3775 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
3776 | { |
|
|
3777 | if (slot < 0) |
|
|
3778 | /* overflow, need to check for all hash slots */ |
|
|
3779 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3780 | infy_wd (EV_A_ slot, wd, ev); |
|
|
3781 | else |
|
|
3782 | { |
|
|
3783 | WL w_; |
|
|
3784 | |
|
|
3785 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
3786 | { |
|
|
3787 | ev_stat *w = (ev_stat *)w_; |
|
|
3788 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
3789 | |
|
|
3790 | if (w->wd == wd || wd == -1) |
|
|
3791 | { |
|
|
3792 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
3793 | { |
|
|
3794 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3795 | w->wd = -1; |
|
|
3796 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3797 | } |
|
|
3798 | |
|
|
3799 | stat_timer_cb (EV_A_ &w->timer, 0); |
599 | } |
3800 | } |
600 | } |
3801 | } |
601 | } |
3802 | } |
602 | } |
3803 | } |
603 | |
3804 | |
604 | static void |
3805 | static void |
605 | time_update (void) |
3806 | infy_cb (EV_P_ ev_io *w, int revents) |
606 | { |
3807 | { |
|
|
3808 | char buf [EV_INOTIFY_BUFSIZE]; |
607 | int i; |
3809 | int ofs; |
|
|
3810 | int len = read (fs_fd, buf, sizeof (buf)); |
608 | |
3811 | |
609 | ev_now = ev_time (); |
3812 | for (ofs = 0; ofs < len; ) |
610 | |
3813 | { |
611 | if (have_monotonic) |
3814 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
3815 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3816 | ofs += sizeof (struct inotify_event) + ev->len; |
612 | { |
3817 | } |
613 | ev_tstamp odiff = diff; |
3818 | } |
614 | |
3819 | |
615 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
3820 | inline_size void ecb_cold |
|
|
3821 | ev_check_2625 (EV_P) |
|
|
3822 | { |
|
|
3823 | /* kernels < 2.6.25 are borked |
|
|
3824 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
3825 | */ |
|
|
3826 | if (ev_linux_version () < 0x020619) |
|
|
3827 | return; |
|
|
3828 | |
|
|
3829 | fs_2625 = 1; |
|
|
3830 | } |
|
|
3831 | |
|
|
3832 | inline_size int |
|
|
3833 | infy_newfd (void) |
|
|
3834 | { |
|
|
3835 | #if defined IN_CLOEXEC && defined IN_NONBLOCK |
|
|
3836 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3837 | if (fd >= 0) |
|
|
3838 | return fd; |
|
|
3839 | #endif |
|
|
3840 | return inotify_init (); |
|
|
3841 | } |
|
|
3842 | |
|
|
3843 | inline_size void |
|
|
3844 | infy_init (EV_P) |
|
|
3845 | { |
|
|
3846 | if (fs_fd != -2) |
|
|
3847 | return; |
|
|
3848 | |
|
|
3849 | fs_fd = -1; |
|
|
3850 | |
|
|
3851 | ev_check_2625 (EV_A); |
|
|
3852 | |
|
|
3853 | fs_fd = infy_newfd (); |
|
|
3854 | |
|
|
3855 | if (fs_fd >= 0) |
|
|
3856 | { |
|
|
3857 | fd_intern (fs_fd); |
|
|
3858 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3859 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3860 | ev_io_start (EV_A_ &fs_w); |
|
|
3861 | ev_unref (EV_A); |
|
|
3862 | } |
|
|
3863 | } |
|
|
3864 | |
|
|
3865 | inline_size void |
|
|
3866 | infy_fork (EV_P) |
|
|
3867 | { |
|
|
3868 | int slot; |
|
|
3869 | |
|
|
3870 | if (fs_fd < 0) |
|
|
3871 | return; |
|
|
3872 | |
|
|
3873 | ev_ref (EV_A); |
|
|
3874 | ev_io_stop (EV_A_ &fs_w); |
|
|
3875 | close (fs_fd); |
|
|
3876 | fs_fd = infy_newfd (); |
|
|
3877 | |
|
|
3878 | if (fs_fd >= 0) |
|
|
3879 | { |
|
|
3880 | fd_intern (fs_fd); |
|
|
3881 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3882 | ev_io_start (EV_A_ &fs_w); |
|
|
3883 | ev_unref (EV_A); |
|
|
3884 | } |
|
|
3885 | |
|
|
3886 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3887 | { |
|
|
3888 | WL w_ = fs_hash [slot].head; |
|
|
3889 | fs_hash [slot].head = 0; |
|
|
3890 | |
|
|
3891 | while (w_) |
616 | { |
3892 | { |
617 | now = get_clock (); |
3893 | ev_stat *w = (ev_stat *)w_; |
618 | diff = ev_now - now; |
3894 | w_ = w_->next; /* lets us add this watcher */ |
619 | |
3895 | |
620 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
3896 | w->wd = -1; |
621 | return; /* all is well */ |
|
|
622 | |
3897 | |
623 | ev_now = ev_time (); |
3898 | if (fs_fd >= 0) |
|
|
3899 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3900 | else |
|
|
3901 | { |
|
|
3902 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3903 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3904 | ev_timer_again (EV_A_ &w->timer); |
|
|
3905 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3906 | } |
624 | } |
3907 | } |
625 | |
|
|
626 | periodics_reschedule (diff - odiff); |
|
|
627 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
628 | } |
3908 | } |
|
|
3909 | } |
|
|
3910 | |
|
|
3911 | #endif |
|
|
3912 | |
|
|
3913 | #ifdef _WIN32 |
|
|
3914 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
3915 | #else |
|
|
3916 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
3917 | #endif |
|
|
3918 | |
|
|
3919 | void |
|
|
3920 | ev_stat_stat (EV_P_ ev_stat *w) EV_THROW |
|
|
3921 | { |
|
|
3922 | if (lstat (w->path, &w->attr) < 0) |
|
|
3923 | w->attr.st_nlink = 0; |
|
|
3924 | else if (!w->attr.st_nlink) |
|
|
3925 | w->attr.st_nlink = 1; |
|
|
3926 | } |
|
|
3927 | |
|
|
3928 | static void noinline |
|
|
3929 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3930 | { |
|
|
3931 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3932 | |
|
|
3933 | ev_statdata prev = w->attr; |
|
|
3934 | ev_stat_stat (EV_A_ w); |
|
|
3935 | |
|
|
3936 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3937 | if ( |
|
|
3938 | prev.st_dev != w->attr.st_dev |
|
|
3939 | || prev.st_ino != w->attr.st_ino |
|
|
3940 | || prev.st_mode != w->attr.st_mode |
|
|
3941 | || prev.st_nlink != w->attr.st_nlink |
|
|
3942 | || prev.st_uid != w->attr.st_uid |
|
|
3943 | || prev.st_gid != w->attr.st_gid |
|
|
3944 | || prev.st_rdev != w->attr.st_rdev |
|
|
3945 | || prev.st_size != w->attr.st_size |
|
|
3946 | || prev.st_atime != w->attr.st_atime |
|
|
3947 | || prev.st_mtime != w->attr.st_mtime |
|
|
3948 | || prev.st_ctime != w->attr.st_ctime |
|
|
3949 | ) { |
|
|
3950 | /* we only update w->prev on actual differences */ |
|
|
3951 | /* in case we test more often than invoke the callback, */ |
|
|
3952 | /* to ensure that prev is always different to attr */ |
|
|
3953 | w->prev = prev; |
|
|
3954 | |
|
|
3955 | #if EV_USE_INOTIFY |
|
|
3956 | if (fs_fd >= 0) |
|
|
3957 | { |
|
|
3958 | infy_del (EV_A_ w); |
|
|
3959 | infy_add (EV_A_ w); |
|
|
3960 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3961 | } |
|
|
3962 | #endif |
|
|
3963 | |
|
|
3964 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3965 | } |
|
|
3966 | } |
|
|
3967 | |
|
|
3968 | void |
|
|
3969 | ev_stat_start (EV_P_ ev_stat *w) EV_THROW |
|
|
3970 | { |
|
|
3971 | if (expect_false (ev_is_active (w))) |
|
|
3972 | return; |
|
|
3973 | |
|
|
3974 | ev_stat_stat (EV_A_ w); |
|
|
3975 | |
|
|
3976 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3977 | w->interval = MIN_STAT_INTERVAL; |
|
|
3978 | |
|
|
3979 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3980 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3981 | |
|
|
3982 | #if EV_USE_INOTIFY |
|
|
3983 | infy_init (EV_A); |
|
|
3984 | |
|
|
3985 | if (fs_fd >= 0) |
|
|
3986 | infy_add (EV_A_ w); |
629 | else |
3987 | else |
|
|
3988 | #endif |
|
|
3989 | { |
|
|
3990 | ev_timer_again (EV_A_ &w->timer); |
|
|
3991 | ev_unref (EV_A); |
630 | { |
3992 | } |
631 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
3993 | |
|
|
3994 | ev_start (EV_A_ (W)w, 1); |
|
|
3995 | |
|
|
3996 | EV_FREQUENT_CHECK; |
|
|
3997 | } |
|
|
3998 | |
|
|
3999 | void |
|
|
4000 | ev_stat_stop (EV_P_ ev_stat *w) EV_THROW |
|
|
4001 | { |
|
|
4002 | clear_pending (EV_A_ (W)w); |
|
|
4003 | if (expect_false (!ev_is_active (w))) |
|
|
4004 | return; |
|
|
4005 | |
|
|
4006 | EV_FREQUENT_CHECK; |
|
|
4007 | |
|
|
4008 | #if EV_USE_INOTIFY |
|
|
4009 | infy_del (EV_A_ w); |
|
|
4010 | #endif |
|
|
4011 | |
|
|
4012 | if (ev_is_active (&w->timer)) |
|
|
4013 | { |
|
|
4014 | ev_ref (EV_A); |
|
|
4015 | ev_timer_stop (EV_A_ &w->timer); |
|
|
4016 | } |
|
|
4017 | |
|
|
4018 | ev_stop (EV_A_ (W)w); |
|
|
4019 | |
|
|
4020 | EV_FREQUENT_CHECK; |
|
|
4021 | } |
|
|
4022 | #endif |
|
|
4023 | |
|
|
4024 | #if EV_IDLE_ENABLE |
|
|
4025 | void |
|
|
4026 | ev_idle_start (EV_P_ ev_idle *w) EV_THROW |
|
|
4027 | { |
|
|
4028 | if (expect_false (ev_is_active (w))) |
|
|
4029 | return; |
|
|
4030 | |
|
|
4031 | pri_adjust (EV_A_ (W)w); |
|
|
4032 | |
|
|
4033 | EV_FREQUENT_CHECK; |
|
|
4034 | |
|
|
4035 | { |
|
|
4036 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
4037 | |
|
|
4038 | ++idleall; |
|
|
4039 | ev_start (EV_A_ (W)w, active); |
|
|
4040 | |
|
|
4041 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
4042 | idles [ABSPRI (w)][active - 1] = w; |
|
|
4043 | } |
|
|
4044 | |
|
|
4045 | EV_FREQUENT_CHECK; |
|
|
4046 | } |
|
|
4047 | |
|
|
4048 | void |
|
|
4049 | ev_idle_stop (EV_P_ ev_idle *w) EV_THROW |
|
|
4050 | { |
|
|
4051 | clear_pending (EV_A_ (W)w); |
|
|
4052 | if (expect_false (!ev_is_active (w))) |
|
|
4053 | return; |
|
|
4054 | |
|
|
4055 | EV_FREQUENT_CHECK; |
|
|
4056 | |
|
|
4057 | { |
|
|
4058 | int active = ev_active (w); |
|
|
4059 | |
|
|
4060 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
4061 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
4062 | |
|
|
4063 | ev_stop (EV_A_ (W)w); |
|
|
4064 | --idleall; |
|
|
4065 | } |
|
|
4066 | |
|
|
4067 | EV_FREQUENT_CHECK; |
|
|
4068 | } |
|
|
4069 | #endif |
|
|
4070 | |
|
|
4071 | #if EV_PREPARE_ENABLE |
|
|
4072 | void |
|
|
4073 | ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW |
|
|
4074 | { |
|
|
4075 | if (expect_false (ev_is_active (w))) |
|
|
4076 | return; |
|
|
4077 | |
|
|
4078 | EV_FREQUENT_CHECK; |
|
|
4079 | |
|
|
4080 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
4081 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
4082 | prepares [preparecnt - 1] = w; |
|
|
4083 | |
|
|
4084 | EV_FREQUENT_CHECK; |
|
|
4085 | } |
|
|
4086 | |
|
|
4087 | void |
|
|
4088 | ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW |
|
|
4089 | { |
|
|
4090 | clear_pending (EV_A_ (W)w); |
|
|
4091 | if (expect_false (!ev_is_active (w))) |
|
|
4092 | return; |
|
|
4093 | |
|
|
4094 | EV_FREQUENT_CHECK; |
|
|
4095 | |
|
|
4096 | { |
|
|
4097 | int active = ev_active (w); |
|
|
4098 | |
|
|
4099 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
4100 | ev_active (prepares [active - 1]) = active; |
|
|
4101 | } |
|
|
4102 | |
|
|
4103 | ev_stop (EV_A_ (W)w); |
|
|
4104 | |
|
|
4105 | EV_FREQUENT_CHECK; |
|
|
4106 | } |
|
|
4107 | #endif |
|
|
4108 | |
|
|
4109 | #if EV_CHECK_ENABLE |
|
|
4110 | void |
|
|
4111 | ev_check_start (EV_P_ ev_check *w) EV_THROW |
|
|
4112 | { |
|
|
4113 | if (expect_false (ev_is_active (w))) |
|
|
4114 | return; |
|
|
4115 | |
|
|
4116 | EV_FREQUENT_CHECK; |
|
|
4117 | |
|
|
4118 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
4119 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
4120 | checks [checkcnt - 1] = w; |
|
|
4121 | |
|
|
4122 | EV_FREQUENT_CHECK; |
|
|
4123 | } |
|
|
4124 | |
|
|
4125 | void |
|
|
4126 | ev_check_stop (EV_P_ ev_check *w) EV_THROW |
|
|
4127 | { |
|
|
4128 | clear_pending (EV_A_ (W)w); |
|
|
4129 | if (expect_false (!ev_is_active (w))) |
|
|
4130 | return; |
|
|
4131 | |
|
|
4132 | EV_FREQUENT_CHECK; |
|
|
4133 | |
|
|
4134 | { |
|
|
4135 | int active = ev_active (w); |
|
|
4136 | |
|
|
4137 | checks [active - 1] = checks [--checkcnt]; |
|
|
4138 | ev_active (checks [active - 1]) = active; |
|
|
4139 | } |
|
|
4140 | |
|
|
4141 | ev_stop (EV_A_ (W)w); |
|
|
4142 | |
|
|
4143 | EV_FREQUENT_CHECK; |
|
|
4144 | } |
|
|
4145 | #endif |
|
|
4146 | |
|
|
4147 | #if EV_EMBED_ENABLE |
|
|
4148 | void noinline |
|
|
4149 | ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW |
|
|
4150 | { |
|
|
4151 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4152 | } |
|
|
4153 | |
|
|
4154 | static void |
|
|
4155 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
4156 | { |
|
|
4157 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
4158 | |
|
|
4159 | if (ev_cb (w)) |
|
|
4160 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
4161 | else |
|
|
4162 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
4163 | } |
|
|
4164 | |
|
|
4165 | static void |
|
|
4166 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
4167 | { |
|
|
4168 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
4169 | |
|
|
4170 | { |
|
|
4171 | EV_P = w->other; |
|
|
4172 | |
|
|
4173 | while (fdchangecnt) |
632 | { |
4174 | { |
633 | periodics_reschedule (ev_now - now); |
4175 | fd_reify (EV_A); |
634 | |
4176 | ev_run (EV_A_ EVRUN_NOWAIT); |
635 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
636 | for (i = 0; i < timercnt; ++i) |
|
|
637 | timers [i]->at += diff; |
|
|
638 | } |
4177 | } |
639 | |
|
|
640 | now = ev_now; |
|
|
641 | } |
4178 | } |
642 | } |
4179 | } |
643 | |
4180 | |
644 | int ev_loop_done; |
4181 | static void |
645 | |
4182 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
646 | void ev_loop (int flags) |
|
|
647 | { |
4183 | { |
648 | double block; |
4184 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
649 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
|
|
650 | |
4185 | |
651 | do |
4186 | ev_embed_stop (EV_A_ w); |
|
|
4187 | |
652 | { |
4188 | { |
653 | /* queue check watchers (and execute them) */ |
4189 | EV_P = w->other; |
654 | if (preparecnt) |
|
|
655 | { |
|
|
656 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
|
|
657 | call_pending (); |
|
|
658 | } |
|
|
659 | |
4190 | |
660 | /* update fd-related kernel structures */ |
4191 | ev_loop_fork (EV_A); |
661 | fd_reify (); |
4192 | ev_run (EV_A_ EVRUN_NOWAIT); |
662 | |
|
|
663 | /* calculate blocking time */ |
|
|
664 | |
|
|
665 | /* we only need this for !monotonic clockor timers, but as we basically |
|
|
666 | always have timers, we just calculate it always */ |
|
|
667 | ev_now = ev_time (); |
|
|
668 | |
|
|
669 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
670 | block = 0.; |
|
|
671 | else |
|
|
672 | { |
|
|
673 | block = MAX_BLOCKTIME; |
|
|
674 | |
|
|
675 | if (timercnt) |
|
|
676 | { |
|
|
677 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
|
|
678 | if (block > to) block = to; |
|
|
679 | } |
|
|
680 | |
|
|
681 | if (periodiccnt) |
|
|
682 | { |
|
|
683 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
|
|
684 | if (block > to) block = to; |
|
|
685 | } |
|
|
686 | |
|
|
687 | if (block < 0.) block = 0.; |
|
|
688 | } |
|
|
689 | |
|
|
690 | method_poll (block); |
|
|
691 | |
|
|
692 | /* update ev_now, do magic */ |
|
|
693 | time_update (); |
|
|
694 | |
|
|
695 | /* queue pending timers and reschedule them */ |
|
|
696 | timers_reify (); /* relative timers called last */ |
|
|
697 | periodics_reify (); /* absolute timers called first */ |
|
|
698 | |
|
|
699 | /* queue idle watchers unless io or timers are pending */ |
|
|
700 | if (!pendingcnt) |
|
|
701 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
|
|
702 | |
|
|
703 | /* queue check watchers, to be executed first */ |
|
|
704 | if (checkcnt) |
|
|
705 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
|
|
706 | |
|
|
707 | call_pending (); |
|
|
708 | } |
4193 | } |
709 | while (!ev_loop_done); |
|
|
710 | |
4194 | |
711 | if (ev_loop_done != 2) |
4195 | ev_embed_start (EV_A_ w); |
712 | ev_loop_done = 0; |
|
|
713 | } |
4196 | } |
|
|
4197 | |
|
|
4198 | #if 0 |
|
|
4199 | static void |
|
|
4200 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
4201 | { |
|
|
4202 | ev_idle_stop (EV_A_ idle); |
|
|
4203 | } |
|
|
4204 | #endif |
|
|
4205 | |
|
|
4206 | void |
|
|
4207 | ev_embed_start (EV_P_ ev_embed *w) EV_THROW |
|
|
4208 | { |
|
|
4209 | if (expect_false (ev_is_active (w))) |
|
|
4210 | return; |
|
|
4211 | |
|
|
4212 | { |
|
|
4213 | EV_P = w->other; |
|
|
4214 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
4215 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
4216 | } |
|
|
4217 | |
|
|
4218 | EV_FREQUENT_CHECK; |
|
|
4219 | |
|
|
4220 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
4221 | ev_io_start (EV_A_ &w->io); |
|
|
4222 | |
|
|
4223 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
4224 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
4225 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
4226 | |
|
|
4227 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4228 | ev_fork_start (EV_A_ &w->fork); |
|
|
4229 | |
|
|
4230 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
4231 | |
|
|
4232 | ev_start (EV_A_ (W)w, 1); |
|
|
4233 | |
|
|
4234 | EV_FREQUENT_CHECK; |
|
|
4235 | } |
|
|
4236 | |
|
|
4237 | void |
|
|
4238 | ev_embed_stop (EV_P_ ev_embed *w) EV_THROW |
|
|
4239 | { |
|
|
4240 | clear_pending (EV_A_ (W)w); |
|
|
4241 | if (expect_false (!ev_is_active (w))) |
|
|
4242 | return; |
|
|
4243 | |
|
|
4244 | EV_FREQUENT_CHECK; |
|
|
4245 | |
|
|
4246 | ev_io_stop (EV_A_ &w->io); |
|
|
4247 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4248 | ev_fork_stop (EV_A_ &w->fork); |
|
|
4249 | |
|
|
4250 | ev_stop (EV_A_ (W)w); |
|
|
4251 | |
|
|
4252 | EV_FREQUENT_CHECK; |
|
|
4253 | } |
|
|
4254 | #endif |
|
|
4255 | |
|
|
4256 | #if EV_FORK_ENABLE |
|
|
4257 | void |
|
|
4258 | ev_fork_start (EV_P_ ev_fork *w) EV_THROW |
|
|
4259 | { |
|
|
4260 | if (expect_false (ev_is_active (w))) |
|
|
4261 | return; |
|
|
4262 | |
|
|
4263 | EV_FREQUENT_CHECK; |
|
|
4264 | |
|
|
4265 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
4266 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
4267 | forks [forkcnt - 1] = w; |
|
|
4268 | |
|
|
4269 | EV_FREQUENT_CHECK; |
|
|
4270 | } |
|
|
4271 | |
|
|
4272 | void |
|
|
4273 | ev_fork_stop (EV_P_ ev_fork *w) EV_THROW |
|
|
4274 | { |
|
|
4275 | clear_pending (EV_A_ (W)w); |
|
|
4276 | if (expect_false (!ev_is_active (w))) |
|
|
4277 | return; |
|
|
4278 | |
|
|
4279 | EV_FREQUENT_CHECK; |
|
|
4280 | |
|
|
4281 | { |
|
|
4282 | int active = ev_active (w); |
|
|
4283 | |
|
|
4284 | forks [active - 1] = forks [--forkcnt]; |
|
|
4285 | ev_active (forks [active - 1]) = active; |
|
|
4286 | } |
|
|
4287 | |
|
|
4288 | ev_stop (EV_A_ (W)w); |
|
|
4289 | |
|
|
4290 | EV_FREQUENT_CHECK; |
|
|
4291 | } |
|
|
4292 | #endif |
|
|
4293 | |
|
|
4294 | #if EV_CLEANUP_ENABLE |
|
|
4295 | void |
|
|
4296 | ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4297 | { |
|
|
4298 | if (expect_false (ev_is_active (w))) |
|
|
4299 | return; |
|
|
4300 | |
|
|
4301 | EV_FREQUENT_CHECK; |
|
|
4302 | |
|
|
4303 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4304 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4305 | cleanups [cleanupcnt - 1] = w; |
|
|
4306 | |
|
|
4307 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4308 | ev_unref (EV_A); |
|
|
4309 | EV_FREQUENT_CHECK; |
|
|
4310 | } |
|
|
4311 | |
|
|
4312 | void |
|
|
4313 | ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW |
|
|
4314 | { |
|
|
4315 | clear_pending (EV_A_ (W)w); |
|
|
4316 | if (expect_false (!ev_is_active (w))) |
|
|
4317 | return; |
|
|
4318 | |
|
|
4319 | EV_FREQUENT_CHECK; |
|
|
4320 | ev_ref (EV_A); |
|
|
4321 | |
|
|
4322 | { |
|
|
4323 | int active = ev_active (w); |
|
|
4324 | |
|
|
4325 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4326 | ev_active (cleanups [active - 1]) = active; |
|
|
4327 | } |
|
|
4328 | |
|
|
4329 | ev_stop (EV_A_ (W)w); |
|
|
4330 | |
|
|
4331 | EV_FREQUENT_CHECK; |
|
|
4332 | } |
|
|
4333 | #endif |
|
|
4334 | |
|
|
4335 | #if EV_ASYNC_ENABLE |
|
|
4336 | void |
|
|
4337 | ev_async_start (EV_P_ ev_async *w) EV_THROW |
|
|
4338 | { |
|
|
4339 | if (expect_false (ev_is_active (w))) |
|
|
4340 | return; |
|
|
4341 | |
|
|
4342 | w->sent = 0; |
|
|
4343 | |
|
|
4344 | evpipe_init (EV_A); |
|
|
4345 | |
|
|
4346 | EV_FREQUENT_CHECK; |
|
|
4347 | |
|
|
4348 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4349 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
4350 | asyncs [asynccnt - 1] = w; |
|
|
4351 | |
|
|
4352 | EV_FREQUENT_CHECK; |
|
|
4353 | } |
|
|
4354 | |
|
|
4355 | void |
|
|
4356 | ev_async_stop (EV_P_ ev_async *w) EV_THROW |
|
|
4357 | { |
|
|
4358 | clear_pending (EV_A_ (W)w); |
|
|
4359 | if (expect_false (!ev_is_active (w))) |
|
|
4360 | return; |
|
|
4361 | |
|
|
4362 | EV_FREQUENT_CHECK; |
|
|
4363 | |
|
|
4364 | { |
|
|
4365 | int active = ev_active (w); |
|
|
4366 | |
|
|
4367 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
4368 | ev_active (asyncs [active - 1]) = active; |
|
|
4369 | } |
|
|
4370 | |
|
|
4371 | ev_stop (EV_A_ (W)w); |
|
|
4372 | |
|
|
4373 | EV_FREQUENT_CHECK; |
|
|
4374 | } |
|
|
4375 | |
|
|
4376 | void |
|
|
4377 | ev_async_send (EV_P_ ev_async *w) EV_THROW |
|
|
4378 | { |
|
|
4379 | w->sent = 1; |
|
|
4380 | evpipe_write (EV_A_ &async_pending); |
|
|
4381 | } |
|
|
4382 | #endif |
714 | |
4383 | |
715 | /*****************************************************************************/ |
4384 | /*****************************************************************************/ |
716 | |
4385 | |
717 | static void |
|
|
718 | wlist_add (WL *head, WL elem) |
|
|
719 | { |
|
|
720 | elem->next = *head; |
|
|
721 | *head = elem; |
|
|
722 | } |
|
|
723 | |
|
|
724 | static void |
|
|
725 | wlist_del (WL *head, WL elem) |
|
|
726 | { |
|
|
727 | while (*head) |
|
|
728 | { |
|
|
729 | if (*head == elem) |
|
|
730 | { |
|
|
731 | *head = elem->next; |
|
|
732 | return; |
|
|
733 | } |
|
|
734 | |
|
|
735 | head = &(*head)->next; |
|
|
736 | } |
|
|
737 | } |
|
|
738 | |
|
|
739 | static void |
|
|
740 | ev_clear_pending (W w) |
|
|
741 | { |
|
|
742 | if (w->pending) |
|
|
743 | { |
|
|
744 | pendings [w->pending - 1].w = 0; |
|
|
745 | w->pending = 0; |
|
|
746 | } |
|
|
747 | } |
|
|
748 | |
|
|
749 | static void |
|
|
750 | ev_start (W w, int active) |
|
|
751 | { |
|
|
752 | w->active = active; |
|
|
753 | } |
|
|
754 | |
|
|
755 | static void |
|
|
756 | ev_stop (W w) |
|
|
757 | { |
|
|
758 | w->active = 0; |
|
|
759 | } |
|
|
760 | |
|
|
761 | /*****************************************************************************/ |
|
|
762 | |
|
|
763 | void |
|
|
764 | ev_io_start (struct ev_io *w) |
|
|
765 | { |
|
|
766 | if (ev_is_active (w)) |
|
|
767 | return; |
|
|
768 | |
|
|
769 | int fd = w->fd; |
|
|
770 | |
|
|
771 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
772 | |
|
|
773 | ev_start ((W)w, 1); |
|
|
774 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
775 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
776 | |
|
|
777 | fd_change (fd); |
|
|
778 | } |
|
|
779 | |
|
|
780 | void |
|
|
781 | ev_io_stop (struct ev_io *w) |
|
|
782 | { |
|
|
783 | ev_clear_pending ((W)w); |
|
|
784 | if (!ev_is_active (w)) |
|
|
785 | return; |
|
|
786 | |
|
|
787 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
788 | ev_stop ((W)w); |
|
|
789 | |
|
|
790 | fd_change (w->fd); |
|
|
791 | } |
|
|
792 | |
|
|
793 | void |
|
|
794 | ev_timer_start (struct ev_timer *w) |
|
|
795 | { |
|
|
796 | if (ev_is_active (w)) |
|
|
797 | return; |
|
|
798 | |
|
|
799 | w->at += now; |
|
|
800 | |
|
|
801 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
802 | |
|
|
803 | ev_start ((W)w, ++timercnt); |
|
|
804 | array_needsize (timers, timermax, timercnt, ); |
|
|
805 | timers [timercnt - 1] = w; |
|
|
806 | upheap ((WT *)timers, timercnt - 1); |
|
|
807 | } |
|
|
808 | |
|
|
809 | void |
|
|
810 | ev_timer_stop (struct ev_timer *w) |
|
|
811 | { |
|
|
812 | ev_clear_pending ((W)w); |
|
|
813 | if (!ev_is_active (w)) |
|
|
814 | return; |
|
|
815 | |
|
|
816 | if (w->active < timercnt--) |
|
|
817 | { |
|
|
818 | timers [w->active - 1] = timers [timercnt]; |
|
|
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
820 | } |
|
|
821 | |
|
|
822 | w->at = w->repeat; |
|
|
823 | |
|
|
824 | ev_stop ((W)w); |
|
|
825 | } |
|
|
826 | |
|
|
827 | void |
|
|
828 | ev_timer_again (struct ev_timer *w) |
|
|
829 | { |
|
|
830 | if (ev_is_active (w)) |
|
|
831 | { |
|
|
832 | if (w->repeat) |
|
|
833 | { |
|
|
834 | w->at = now + w->repeat; |
|
|
835 | downheap ((WT *)timers, timercnt, w->active - 1); |
|
|
836 | } |
|
|
837 | else |
|
|
838 | ev_timer_stop (w); |
|
|
839 | } |
|
|
840 | else if (w->repeat) |
|
|
841 | ev_timer_start (w); |
|
|
842 | } |
|
|
843 | |
|
|
844 | void |
|
|
845 | ev_periodic_start (struct ev_periodic *w) |
|
|
846 | { |
|
|
847 | if (ev_is_active (w)) |
|
|
848 | return; |
|
|
849 | |
|
|
850 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
851 | |
|
|
852 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
853 | if (w->interval) |
|
|
854 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
|
|
855 | |
|
|
856 | ev_start ((W)w, ++periodiccnt); |
|
|
857 | array_needsize (periodics, periodicmax, periodiccnt, ); |
|
|
858 | periodics [periodiccnt - 1] = w; |
|
|
859 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
860 | } |
|
|
861 | |
|
|
862 | void |
|
|
863 | ev_periodic_stop (struct ev_periodic *w) |
|
|
864 | { |
|
|
865 | ev_clear_pending ((W)w); |
|
|
866 | if (!ev_is_active (w)) |
|
|
867 | return; |
|
|
868 | |
|
|
869 | if (w->active < periodiccnt--) |
|
|
870 | { |
|
|
871 | periodics [w->active - 1] = periodics [periodiccnt]; |
|
|
872 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
|
|
873 | } |
|
|
874 | |
|
|
875 | ev_stop ((W)w); |
|
|
876 | } |
|
|
877 | |
|
|
878 | void |
|
|
879 | ev_signal_start (struct ev_signal *w) |
|
|
880 | { |
|
|
881 | if (ev_is_active (w)) |
|
|
882 | return; |
|
|
883 | |
|
|
884 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
885 | |
|
|
886 | ev_start ((W)w, 1); |
|
|
887 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
888 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
889 | |
|
|
890 | if (!w->next) |
|
|
891 | { |
|
|
892 | struct sigaction sa; |
|
|
893 | sa.sa_handler = sighandler; |
|
|
894 | sigfillset (&sa.sa_mask); |
|
|
895 | sa.sa_flags = 0; |
|
|
896 | sigaction (w->signum, &sa, 0); |
|
|
897 | } |
|
|
898 | } |
|
|
899 | |
|
|
900 | void |
|
|
901 | ev_signal_stop (struct ev_signal *w) |
|
|
902 | { |
|
|
903 | ev_clear_pending ((W)w); |
|
|
904 | if (!ev_is_active (w)) |
|
|
905 | return; |
|
|
906 | |
|
|
907 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
908 | ev_stop ((W)w); |
|
|
909 | |
|
|
910 | if (!signals [w->signum - 1].head) |
|
|
911 | signal (w->signum, SIG_DFL); |
|
|
912 | } |
|
|
913 | |
|
|
914 | void |
|
|
915 | ev_idle_start (struct ev_idle *w) |
|
|
916 | { |
|
|
917 | if (ev_is_active (w)) |
|
|
918 | return; |
|
|
919 | |
|
|
920 | ev_start ((W)w, ++idlecnt); |
|
|
921 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
922 | idles [idlecnt - 1] = w; |
|
|
923 | } |
|
|
924 | |
|
|
925 | void |
|
|
926 | ev_idle_stop (struct ev_idle *w) |
|
|
927 | { |
|
|
928 | ev_clear_pending ((W)w); |
|
|
929 | if (ev_is_active (w)) |
|
|
930 | return; |
|
|
931 | |
|
|
932 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
933 | ev_stop ((W)w); |
|
|
934 | } |
|
|
935 | |
|
|
936 | void |
|
|
937 | ev_prepare_start (struct ev_prepare *w) |
|
|
938 | { |
|
|
939 | if (ev_is_active (w)) |
|
|
940 | return; |
|
|
941 | |
|
|
942 | ev_start ((W)w, ++preparecnt); |
|
|
943 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
944 | prepares [preparecnt - 1] = w; |
|
|
945 | } |
|
|
946 | |
|
|
947 | void |
|
|
948 | ev_prepare_stop (struct ev_prepare *w) |
|
|
949 | { |
|
|
950 | ev_clear_pending ((W)w); |
|
|
951 | if (ev_is_active (w)) |
|
|
952 | return; |
|
|
953 | |
|
|
954 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
955 | ev_stop ((W)w); |
|
|
956 | } |
|
|
957 | |
|
|
958 | void |
|
|
959 | ev_check_start (struct ev_check *w) |
|
|
960 | { |
|
|
961 | if (ev_is_active (w)) |
|
|
962 | return; |
|
|
963 | |
|
|
964 | ev_start ((W)w, ++checkcnt); |
|
|
965 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
966 | checks [checkcnt - 1] = w; |
|
|
967 | } |
|
|
968 | |
|
|
969 | void |
|
|
970 | ev_check_stop (struct ev_check *w) |
|
|
971 | { |
|
|
972 | ev_clear_pending ((W)w); |
|
|
973 | if (ev_is_active (w)) |
|
|
974 | return; |
|
|
975 | |
|
|
976 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
977 | ev_stop ((W)w); |
|
|
978 | } |
|
|
979 | |
|
|
980 | void |
|
|
981 | ev_child_start (struct ev_child *w) |
|
|
982 | { |
|
|
983 | if (ev_is_active (w)) |
|
|
984 | return; |
|
|
985 | |
|
|
986 | ev_start ((W)w, 1); |
|
|
987 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
988 | } |
|
|
989 | |
|
|
990 | void |
|
|
991 | ev_child_stop (struct ev_child *w) |
|
|
992 | { |
|
|
993 | ev_clear_pending ((W)w); |
|
|
994 | if (ev_is_active (w)) |
|
|
995 | return; |
|
|
996 | |
|
|
997 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
998 | ev_stop ((W)w); |
|
|
999 | } |
|
|
1000 | |
|
|
1001 | /*****************************************************************************/ |
|
|
1002 | |
|
|
1003 | struct ev_once |
4386 | struct ev_once |
1004 | { |
4387 | { |
1005 | struct ev_io io; |
4388 | ev_io io; |
1006 | struct ev_timer to; |
4389 | ev_timer to; |
1007 | void (*cb)(int revents, void *arg); |
4390 | void (*cb)(int revents, void *arg); |
1008 | void *arg; |
4391 | void *arg; |
1009 | }; |
4392 | }; |
1010 | |
4393 | |
1011 | static void |
4394 | static void |
1012 | once_cb (struct ev_once *once, int revents) |
4395 | once_cb (EV_P_ struct ev_once *once, int revents) |
1013 | { |
4396 | { |
1014 | void (*cb)(int revents, void *arg) = once->cb; |
4397 | void (*cb)(int revents, void *arg) = once->cb; |
1015 | void *arg = once->arg; |
4398 | void *arg = once->arg; |
1016 | |
4399 | |
1017 | ev_io_stop (&once->io); |
4400 | ev_io_stop (EV_A_ &once->io); |
1018 | ev_timer_stop (&once->to); |
4401 | ev_timer_stop (EV_A_ &once->to); |
1019 | free (once); |
4402 | ev_free (once); |
1020 | |
4403 | |
1021 | cb (revents, arg); |
4404 | cb (revents, arg); |
1022 | } |
4405 | } |
1023 | |
4406 | |
1024 | static void |
4407 | static void |
1025 | once_cb_io (struct ev_io *w, int revents) |
4408 | once_cb_io (EV_P_ ev_io *w, int revents) |
1026 | { |
4409 | { |
1027 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
4410 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
4411 | |
|
|
4412 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1028 | } |
4413 | } |
1029 | |
4414 | |
1030 | static void |
4415 | static void |
1031 | once_cb_to (struct ev_timer *w, int revents) |
4416 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1032 | { |
4417 | { |
1033 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
4418 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
4419 | |
|
|
4420 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1034 | } |
4421 | } |
1035 | |
4422 | |
1036 | void |
4423 | void |
1037 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
4424 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW |
1038 | { |
4425 | { |
1039 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
4426 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1040 | |
4427 | |
1041 | if (!once) |
4428 | if (expect_false (!once)) |
|
|
4429 | { |
1042 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
4430 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1043 | else |
4431 | return; |
1044 | { |
4432 | } |
|
|
4433 | |
1045 | once->cb = cb; |
4434 | once->cb = cb; |
1046 | once->arg = arg; |
4435 | once->arg = arg; |
1047 | |
4436 | |
1048 | ev_watcher_init (&once->io, once_cb_io); |
4437 | ev_init (&once->io, once_cb_io); |
1049 | if (fd >= 0) |
4438 | if (fd >= 0) |
|
|
4439 | { |
|
|
4440 | ev_io_set (&once->io, fd, events); |
|
|
4441 | ev_io_start (EV_A_ &once->io); |
|
|
4442 | } |
|
|
4443 | |
|
|
4444 | ev_init (&once->to, once_cb_to); |
|
|
4445 | if (timeout >= 0.) |
|
|
4446 | { |
|
|
4447 | ev_timer_set (&once->to, timeout, 0.); |
|
|
4448 | ev_timer_start (EV_A_ &once->to); |
|
|
4449 | } |
|
|
4450 | } |
|
|
4451 | |
|
|
4452 | /*****************************************************************************/ |
|
|
4453 | |
|
|
4454 | #if EV_WALK_ENABLE |
|
|
4455 | void ecb_cold |
|
|
4456 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW |
|
|
4457 | { |
|
|
4458 | int i, j; |
|
|
4459 | ev_watcher_list *wl, *wn; |
|
|
4460 | |
|
|
4461 | if (types & (EV_IO | EV_EMBED)) |
|
|
4462 | for (i = 0; i < anfdmax; ++i) |
|
|
4463 | for (wl = anfds [i].head; wl; ) |
1050 | { |
4464 | { |
1051 | ev_io_set (&once->io, fd, events); |
4465 | wn = wl->next; |
1052 | ev_io_start (&once->io); |
4466 | |
|
|
4467 | #if EV_EMBED_ENABLE |
|
|
4468 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
4469 | { |
|
|
4470 | if (types & EV_EMBED) |
|
|
4471 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
4472 | } |
|
|
4473 | else |
|
|
4474 | #endif |
|
|
4475 | #if EV_USE_INOTIFY |
|
|
4476 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
4477 | ; |
|
|
4478 | else |
|
|
4479 | #endif |
|
|
4480 | if ((ev_io *)wl != &pipe_w) |
|
|
4481 | if (types & EV_IO) |
|
|
4482 | cb (EV_A_ EV_IO, wl); |
|
|
4483 | |
|
|
4484 | wl = wn; |
1053 | } |
4485 | } |
1054 | |
4486 | |
1055 | ev_watcher_init (&once->to, once_cb_to); |
4487 | if (types & (EV_TIMER | EV_STAT)) |
1056 | if (timeout >= 0.) |
4488 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
4489 | #if EV_STAT_ENABLE |
|
|
4490 | /*TODO: timer is not always active*/ |
|
|
4491 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1057 | { |
4492 | { |
1058 | ev_timer_set (&once->to, timeout, 0.); |
4493 | if (types & EV_STAT) |
1059 | ev_timer_start (&once->to); |
4494 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1060 | } |
4495 | } |
1061 | } |
4496 | else |
1062 | } |
4497 | #endif |
|
|
4498 | if (types & EV_TIMER) |
|
|
4499 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1063 | |
4500 | |
1064 | /*****************************************************************************/ |
4501 | #if EV_PERIODIC_ENABLE |
|
|
4502 | if (types & EV_PERIODIC) |
|
|
4503 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
4504 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
4505 | #endif |
1065 | |
4506 | |
1066 | #if 0 |
4507 | #if EV_IDLE_ENABLE |
|
|
4508 | if (types & EV_IDLE) |
|
|
4509 | for (j = NUMPRI; j--; ) |
|
|
4510 | for (i = idlecnt [j]; i--; ) |
|
|
4511 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
4512 | #endif |
1067 | |
4513 | |
1068 | struct ev_io wio; |
4514 | #if EV_FORK_ENABLE |
|
|
4515 | if (types & EV_FORK) |
|
|
4516 | for (i = forkcnt; i--; ) |
|
|
4517 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
4518 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
4519 | #endif |
1069 | |
4520 | |
1070 | static void |
4521 | #if EV_ASYNC_ENABLE |
1071 | sin_cb (struct ev_io *w, int revents) |
4522 | if (types & EV_ASYNC) |
1072 | { |
4523 | for (i = asynccnt; i--; ) |
1073 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
4524 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
1074 | } |
4525 | #endif |
1075 | |
4526 | |
1076 | static void |
4527 | #if EV_PREPARE_ENABLE |
1077 | ocb (struct ev_timer *w, int revents) |
4528 | if (types & EV_PREPARE) |
1078 | { |
4529 | for (i = preparecnt; i--; ) |
1079 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
4530 | # if EV_EMBED_ENABLE |
1080 | ev_timer_stop (w); |
4531 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
1081 | ev_timer_start (w); |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | static void |
|
|
1085 | scb (struct ev_signal *w, int revents) |
|
|
1086 | { |
|
|
1087 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1088 | ev_io_stop (&wio); |
|
|
1089 | ev_io_start (&wio); |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | static void |
|
|
1093 | gcb (struct ev_signal *w, int revents) |
|
|
1094 | { |
|
|
1095 | fprintf (stderr, "generic %x\n", revents); |
|
|
1096 | |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | int main (void) |
|
|
1100 | { |
|
|
1101 | ev_init (0); |
|
|
1102 | |
|
|
1103 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1104 | ev_io_start (&wio); |
|
|
1105 | |
|
|
1106 | struct ev_timer t[10000]; |
|
|
1107 | |
|
|
1108 | #if 0 |
|
|
1109 | int i; |
|
|
1110 | for (i = 0; i < 10000; ++i) |
|
|
1111 | { |
|
|
1112 | struct ev_timer *w = t + i; |
|
|
1113 | ev_watcher_init (w, ocb, i); |
|
|
1114 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1115 | ev_timer_start (w); |
|
|
1116 | if (drand48 () < 0.5) |
|
|
1117 | ev_timer_stop (w); |
|
|
1118 | } |
|
|
1119 | #endif |
4532 | # endif |
1120 | |
4533 | cb (EV_A_ EV_PREPARE, prepares [i]); |
1121 | struct ev_timer t1; |
|
|
1122 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1123 | ev_timer_start (&t1); |
|
|
1124 | |
|
|
1125 | struct ev_signal sig; |
|
|
1126 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1127 | ev_signal_start (&sig); |
|
|
1128 | |
|
|
1129 | struct ev_check cw; |
|
|
1130 | ev_check_init (&cw, gcb); |
|
|
1131 | ev_check_start (&cw); |
|
|
1132 | |
|
|
1133 | struct ev_idle iw; |
|
|
1134 | ev_idle_init (&iw, gcb); |
|
|
1135 | ev_idle_start (&iw); |
|
|
1136 | |
|
|
1137 | ev_loop (0); |
|
|
1138 | |
|
|
1139 | return 0; |
|
|
1140 | } |
|
|
1141 | |
|
|
1142 | #endif |
4534 | #endif |
1143 | |
4535 | |
|
|
4536 | #if EV_CHECK_ENABLE |
|
|
4537 | if (types & EV_CHECK) |
|
|
4538 | for (i = checkcnt; i--; ) |
|
|
4539 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
4540 | #endif |
1144 | |
4541 | |
|
|
4542 | #if EV_SIGNAL_ENABLE |
|
|
4543 | if (types & EV_SIGNAL) |
|
|
4544 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
4545 | for (wl = signals [i].head; wl; ) |
|
|
4546 | { |
|
|
4547 | wn = wl->next; |
|
|
4548 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
4549 | wl = wn; |
|
|
4550 | } |
|
|
4551 | #endif |
1145 | |
4552 | |
|
|
4553 | #if EV_CHILD_ENABLE |
|
|
4554 | if (types & EV_CHILD) |
|
|
4555 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
4556 | for (wl = childs [i]; wl; ) |
|
|
4557 | { |
|
|
4558 | wn = wl->next; |
|
|
4559 | cb (EV_A_ EV_CHILD, wl); |
|
|
4560 | wl = wn; |
|
|
4561 | } |
|
|
4562 | #endif |
|
|
4563 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
4564 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
4565 | } |
|
|
4566 | #endif |
1146 | |
4567 | |
|
|
4568 | #if EV_MULTIPLICITY |
|
|
4569 | #include "ev_wrap.h" |
|
|
4570 | #endif |
|
|
4571 | |