1 | /* |
1 | /* |
2 | * libev event processing core, watcher management |
2 | * libev event processing core, watcher management |
3 | * |
3 | * |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * modification, are permitted provided that the following conditions are |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * met: |
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10 | * |
9 | * |
11 | * * Redistributions of source code must retain the above copyright |
10 | * 1. Redistributions of source code must retain the above copyright notice, |
12 | * notice, this list of conditions and the following disclaimer. |
11 | * this list of conditions and the following disclaimer. |
13 | * |
12 | * |
14 | * * Redistributions in binary form must reproduce the above |
13 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * copyright notice, this list of conditions and the following |
14 | * notice, this list of conditions and the following disclaimer in the |
16 | * disclaimer in the documentation and/or other materials provided |
15 | * documentation and/or other materials provided with the distribution. |
17 | * with the distribution. |
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18 | * |
16 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | * |
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28 | * Alternatively, the contents of this file may be used under the terms of |
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29 | * the GNU General Public License ("GPL") version 2 or any later version, |
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30 | * in which case the provisions of the GPL are applicable instead of |
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31 | * the above. If you wish to allow the use of your version of this file |
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32 | * only under the terms of the GPL and not to allow others to use your |
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33 | * version of this file under the BSD license, indicate your decision |
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34 | * by deleting the provisions above and replace them with the notice |
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35 | * and other provisions required by the GPL. If you do not delete the |
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36 | * provisions above, a recipient may use your version of this file under |
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37 | * either the BSD or the GPL. |
30 | */ |
38 | */ |
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39 | |
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40 | /* this big block deduces configuration from config.h */ |
31 | #ifndef EV_STANDALONE |
41 | #ifndef EV_STANDALONE |
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42 | # ifdef EV_CONFIG_H |
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43 | # include EV_CONFIG_H |
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44 | # else |
32 | # include "config.h" |
45 | # include "config.h" |
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46 | # endif |
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47 | |
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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 |
33 | |
67 | |
34 | # if HAVE_CLOCK_GETTIME |
68 | # if HAVE_CLOCK_GETTIME |
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69 | # ifndef EV_USE_MONOTONIC |
35 | # define EV_USE_MONOTONIC 1 |
70 | # define EV_USE_MONOTONIC 1 |
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71 | # endif |
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72 | # ifndef EV_USE_REALTIME |
36 | # define EV_USE_REALTIME 1 |
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 |
37 | # endif |
82 | # endif |
38 | |
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 | |
39 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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 |
40 | # define EV_USE_SELECT 1 |
99 | # define EV_USE_SELECT 0 |
41 | # endif |
100 | # endif |
42 | |
101 | |
43 | # if HAVE_POLL && HAVE_POLL_H |
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 |
44 | # define EV_USE_POLL 1 |
108 | # define EV_USE_POLL 0 |
45 | # endif |
109 | # endif |
46 | |
110 | |
47 | # if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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 |
48 | # define EV_USE_EPOLL 1 |
117 | # define EV_USE_EPOLL 0 |
49 | # endif |
118 | # endif |
50 | |
119 | |
51 | # if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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 |
52 | # define EV_USE_KQUEUE 1 |
126 | # define EV_USE_KQUEUE 0 |
53 | # endif |
127 | # endif |
54 | |
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 |
55 | #endif |
136 | # endif |
56 | |
137 | |
57 | #include <math.h> |
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 | |
58 | #include <stdlib.h> |
167 | #include <stdlib.h> |
59 | #include <unistd.h> |
168 | #include <string.h> |
60 | #include <fcntl.h> |
169 | #include <fcntl.h> |
61 | #include <signal.h> |
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62 | #include <stddef.h> |
170 | #include <stddef.h> |
63 | |
171 | |
64 | #include <stdio.h> |
172 | #include <stdio.h> |
65 | |
173 | |
66 | #include <assert.h> |
174 | #include <assert.h> |
67 | #include <errno.h> |
175 | #include <errno.h> |
68 | #include <sys/types.h> |
176 | #include <sys/types.h> |
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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 | EV_CPP(extern "C" {) |
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189 | |
69 | #ifndef WIN32 |
190 | #ifndef _WIN32 |
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191 | # include <sys/time.h> |
70 | # include <sys/wait.h> |
192 | # include <sys/wait.h> |
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193 | # include <unistd.h> |
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194 | #else |
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195 | # include <io.h> |
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196 | # define WIN32_LEAN_AND_MEAN |
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197 | # include <windows.h> |
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198 | # ifndef EV_SELECT_IS_WINSOCKET |
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199 | # define EV_SELECT_IS_WINSOCKET 1 |
71 | #endif |
200 | # endif |
72 | #include <sys/time.h> |
201 | # undef EV_AVOID_STDIO |
73 | #include <time.h> |
202 | #endif |
74 | |
203 | |
75 | /**/ |
204 | /* OS X, in its infinite idiocy, actually HARDCODES |
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205 | * a limit of 1024 into their select. Where people have brains, |
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206 | * OS X engineers apparently have a vacuum. Or maybe they were |
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207 | * ordered to have a vacuum, or they do anything for money. |
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208 | * This might help. Or not. |
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209 | */ |
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210 | #define _DARWIN_UNLIMITED_SELECT 1 |
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211 | |
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212 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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213 | |
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214 | /* try to deduce the maximum number of signals on this platform */ |
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215 | #if defined (EV_NSIG) |
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216 | /* use what's provided */ |
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217 | #elif defined (NSIG) |
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218 | # define EV_NSIG (NSIG) |
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219 | #elif defined(_NSIG) |
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220 | # define EV_NSIG (_NSIG) |
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221 | #elif defined (SIGMAX) |
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222 | # define EV_NSIG (SIGMAX+1) |
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223 | #elif defined (SIG_MAX) |
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224 | # define EV_NSIG (SIG_MAX+1) |
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225 | #elif defined (_SIG_MAX) |
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226 | # define EV_NSIG (_SIG_MAX+1) |
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227 | #elif defined (MAXSIG) |
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228 | # define EV_NSIG (MAXSIG+1) |
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229 | #elif defined (MAX_SIG) |
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230 | # define EV_NSIG (MAX_SIG+1) |
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231 | #elif defined (SIGARRAYSIZE) |
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232 | # define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */ |
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233 | #elif defined (_sys_nsig) |
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234 | # define EV_NSIG (_sys_nsig) /* Solaris 2.5 */ |
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235 | #else |
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236 | # error "unable to find value for NSIG, please report" |
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237 | /* to make it compile regardless, just remove the above line, */ |
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238 | /* but consider reporting it, too! :) */ |
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239 | # define EV_NSIG 65 |
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240 | #endif |
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241 | |
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242 | #ifndef EV_USE_FLOOR |
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243 | # define EV_USE_FLOOR 0 |
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244 | #endif |
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245 | |
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246 | #ifndef EV_USE_CLOCK_SYSCALL |
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247 | # if __linux && __GLIBC__ >= 2 |
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248 | # define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS |
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249 | # else |
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250 | # define EV_USE_CLOCK_SYSCALL 0 |
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251 | # endif |
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252 | #endif |
76 | |
253 | |
77 | #ifndef EV_USE_MONOTONIC |
254 | #ifndef EV_USE_MONOTONIC |
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255 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
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256 | # define EV_USE_MONOTONIC EV_FEATURE_OS |
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257 | # else |
78 | # define EV_USE_MONOTONIC 1 |
258 | # define EV_USE_MONOTONIC 0 |
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259 | # endif |
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260 | #endif |
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261 | |
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262 | #ifndef EV_USE_REALTIME |
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263 | # define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL |
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264 | #endif |
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265 | |
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266 | #ifndef EV_USE_NANOSLEEP |
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267 | # if _POSIX_C_SOURCE >= 199309L |
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268 | # define EV_USE_NANOSLEEP EV_FEATURE_OS |
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269 | # else |
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270 | # define EV_USE_NANOSLEEP 0 |
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271 | # endif |
79 | #endif |
272 | #endif |
80 | |
273 | |
81 | #ifndef EV_USE_SELECT |
274 | #ifndef EV_USE_SELECT |
82 | # define EV_USE_SELECT 1 |
275 | # define EV_USE_SELECT EV_FEATURE_BACKENDS |
83 | #endif |
276 | #endif |
84 | |
277 | |
85 | #ifndef EV_USE_POLL |
278 | #ifndef EV_USE_POLL |
86 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
279 | # ifdef _WIN32 |
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280 | # define EV_USE_POLL 0 |
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281 | # else |
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282 | # define EV_USE_POLL EV_FEATURE_BACKENDS |
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283 | # endif |
87 | #endif |
284 | #endif |
88 | |
285 | |
89 | #ifndef EV_USE_EPOLL |
286 | #ifndef EV_USE_EPOLL |
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287 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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288 | # define EV_USE_EPOLL EV_FEATURE_BACKENDS |
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289 | # else |
90 | # define EV_USE_EPOLL 0 |
290 | # define EV_USE_EPOLL 0 |
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291 | # endif |
91 | #endif |
292 | #endif |
92 | |
293 | |
93 | #ifndef EV_USE_KQUEUE |
294 | #ifndef EV_USE_KQUEUE |
94 | # define EV_USE_KQUEUE 0 |
295 | # define EV_USE_KQUEUE 0 |
95 | #endif |
296 | #endif |
96 | |
297 | |
97 | #ifndef EV_USE_REALTIME |
298 | #ifndef EV_USE_PORT |
98 | # define EV_USE_REALTIME 1 |
299 | # define EV_USE_PORT 0 |
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300 | #endif |
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301 | |
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302 | #ifndef EV_USE_INOTIFY |
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303 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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304 | # define EV_USE_INOTIFY EV_FEATURE_OS |
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305 | # else |
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306 | # define EV_USE_INOTIFY 0 |
99 | #endif |
307 | # endif |
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308 | #endif |
100 | |
309 | |
101 | /**/ |
310 | #ifndef EV_PID_HASHSIZE |
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311 | # define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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312 | #endif |
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313 | |
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314 | #ifndef EV_INOTIFY_HASHSIZE |
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315 | # define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1 |
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316 | #endif |
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317 | |
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318 | #ifndef EV_USE_EVENTFD |
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319 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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320 | # define EV_USE_EVENTFD EV_FEATURE_OS |
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321 | # else |
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322 | # define EV_USE_EVENTFD 0 |
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323 | # endif |
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324 | #endif |
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325 | |
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326 | #ifndef EV_USE_SIGNALFD |
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327 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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328 | # define EV_USE_SIGNALFD EV_FEATURE_OS |
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329 | # else |
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330 | # define EV_USE_SIGNALFD 0 |
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331 | # endif |
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332 | #endif |
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333 | |
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334 | #if 0 /* debugging */ |
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335 | # define EV_VERIFY 3 |
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336 | # define EV_USE_4HEAP 1 |
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337 | # define EV_HEAP_CACHE_AT 1 |
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338 | #endif |
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339 | |
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340 | #ifndef EV_VERIFY |
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341 | # define EV_VERIFY (EV_FEATURE_API ? 1 : 0) |
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342 | #endif |
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343 | |
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344 | #ifndef EV_USE_4HEAP |
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345 | # define EV_USE_4HEAP EV_FEATURE_DATA |
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346 | #endif |
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347 | |
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348 | #ifndef EV_HEAP_CACHE_AT |
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349 | # define EV_HEAP_CACHE_AT EV_FEATURE_DATA |
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350 | #endif |
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351 | |
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352 | /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */ |
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353 | /* which makes programs even slower. might work on other unices, too. */ |
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354 | #if EV_USE_CLOCK_SYSCALL |
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355 | # include <syscall.h> |
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356 | # ifdef SYS_clock_gettime |
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357 | # define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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358 | # undef EV_USE_MONOTONIC |
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359 | # define EV_USE_MONOTONIC 1 |
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360 | # else |
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361 | # undef EV_USE_CLOCK_SYSCALL |
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362 | # define EV_USE_CLOCK_SYSCALL 0 |
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363 | # endif |
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364 | #endif |
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365 | |
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366 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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367 | |
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368 | #ifdef _AIX |
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369 | /* AIX has a completely broken poll.h header */ |
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370 | # undef EV_USE_POLL |
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371 | # define EV_USE_POLL 0 |
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372 | #endif |
102 | |
373 | |
103 | #ifndef CLOCK_MONOTONIC |
374 | #ifndef CLOCK_MONOTONIC |
104 | # undef EV_USE_MONOTONIC |
375 | # undef EV_USE_MONOTONIC |
105 | # define EV_USE_MONOTONIC 0 |
376 | # define EV_USE_MONOTONIC 0 |
106 | #endif |
377 | #endif |
… | |
… | |
108 | #ifndef CLOCK_REALTIME |
379 | #ifndef CLOCK_REALTIME |
109 | # undef EV_USE_REALTIME |
380 | # undef EV_USE_REALTIME |
110 | # define EV_USE_REALTIME 0 |
381 | # define EV_USE_REALTIME 0 |
111 | #endif |
382 | #endif |
112 | |
383 | |
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384 | #if !EV_STAT_ENABLE |
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385 | # undef EV_USE_INOTIFY |
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386 | # define EV_USE_INOTIFY 0 |
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387 | #endif |
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388 | |
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389 | #if !EV_USE_NANOSLEEP |
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390 | /* hp-ux has it in sys/time.h, which we unconditionally include above */ |
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391 | # if !defined(_WIN32) && !defined(__hpux) |
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392 | # include <sys/select.h> |
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393 | # endif |
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394 | #endif |
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395 | |
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396 | #if EV_USE_INOTIFY |
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397 | # include <sys/statfs.h> |
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398 | # include <sys/inotify.h> |
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|
399 | /* some very old inotify.h headers don't have IN_DONT_FOLLOW */ |
|
|
400 | # ifndef IN_DONT_FOLLOW |
|
|
401 | # undef EV_USE_INOTIFY |
|
|
402 | # define EV_USE_INOTIFY 0 |
|
|
403 | # endif |
|
|
404 | #endif |
|
|
405 | |
|
|
406 | #if EV_SELECT_IS_WINSOCKET |
|
|
407 | # include <winsock.h> |
|
|
408 | #endif |
|
|
409 | |
|
|
410 | #if EV_USE_EVENTFD |
|
|
411 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
412 | # include <stdint.h> |
|
|
413 | # ifndef EFD_NONBLOCK |
|
|
414 | # define EFD_NONBLOCK O_NONBLOCK |
|
|
415 | # endif |
|
|
416 | # ifndef EFD_CLOEXEC |
|
|
417 | # ifdef O_CLOEXEC |
|
|
418 | # define EFD_CLOEXEC O_CLOEXEC |
|
|
419 | # else |
|
|
420 | # define EFD_CLOEXEC 02000000 |
|
|
421 | # endif |
|
|
422 | # endif |
|
|
423 | EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags); |
|
|
424 | #endif |
|
|
425 | |
|
|
426 | #if EV_USE_SIGNALFD |
|
|
427 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
|
|
428 | # include <stdint.h> |
|
|
429 | # ifndef SFD_NONBLOCK |
|
|
430 | # define SFD_NONBLOCK O_NONBLOCK |
|
|
431 | # endif |
|
|
432 | # ifndef SFD_CLOEXEC |
|
|
433 | # ifdef O_CLOEXEC |
|
|
434 | # define SFD_CLOEXEC O_CLOEXEC |
|
|
435 | # else |
|
|
436 | # define SFD_CLOEXEC 02000000 |
|
|
437 | # endif |
|
|
438 | # endif |
|
|
439 | EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags); |
|
|
440 | |
|
|
441 | struct signalfd_siginfo |
|
|
442 | { |
|
|
443 | uint32_t ssi_signo; |
|
|
444 | char pad[128 - sizeof (uint32_t)]; |
|
|
445 | }; |
|
|
446 | #endif |
|
|
447 | |
113 | /**/ |
448 | /**/ |
114 | |
449 | |
|
|
450 | #if EV_VERIFY >= 3 |
|
|
451 | # define EV_FREQUENT_CHECK ev_verify (EV_A) |
|
|
452 | #else |
|
|
453 | # define EV_FREQUENT_CHECK do { } while (0) |
|
|
454 | #endif |
|
|
455 | |
|
|
456 | /* |
|
|
457 | * This is used to work around floating point rounding problems. |
|
|
458 | * This value is good at least till the year 4000. |
|
|
459 | */ |
|
|
460 | #define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */ |
|
|
461 | /*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */ |
|
|
462 | |
115 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
463 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
116 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
464 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
117 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
118 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
|
|
119 | |
465 | |
120 | #include "ev.h" |
466 | #define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0) |
|
|
467 | #define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0) |
121 | |
468 | |
|
|
469 | /* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */ |
|
|
470 | /* ECB.H BEGIN */ |
|
|
471 | /* |
|
|
472 | * libecb - http://software.schmorp.de/pkg/libecb |
|
|
473 | * |
|
|
474 | * Copyright (©) 2009-2011 Marc Alexander Lehmann <libecb@schmorp.de> |
|
|
475 | * Copyright (©) 2011 Emanuele Giaquinta |
|
|
476 | * All rights reserved. |
|
|
477 | * |
|
|
478 | * Redistribution and use in source and binary forms, with or without modifica- |
|
|
479 | * tion, are permitted provided that the following conditions are met: |
|
|
480 | * |
|
|
481 | * 1. Redistributions of source code must retain the above copyright notice, |
|
|
482 | * this list of conditions and the following disclaimer. |
|
|
483 | * |
|
|
484 | * 2. Redistributions in binary form must reproduce the above copyright |
|
|
485 | * notice, this list of conditions and the following disclaimer in the |
|
|
486 | * documentation and/or other materials provided with the distribution. |
|
|
487 | * |
|
|
488 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
|
|
489 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
|
|
490 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
|
|
491 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
|
|
492 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
|
|
493 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
|
|
494 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
|
|
495 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
|
|
496 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
|
|
497 | * OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
498 | */ |
|
|
499 | |
|
|
500 | #ifndef ECB_H |
|
|
501 | #define ECB_H |
|
|
502 | |
|
|
503 | #ifdef _WIN32 |
|
|
504 | typedef signed char int8_t; |
|
|
505 | typedef unsigned char uint8_t; |
|
|
506 | typedef signed short int16_t; |
|
|
507 | typedef unsigned short uint16_t; |
|
|
508 | typedef signed int int32_t; |
|
|
509 | typedef unsigned int uint32_t; |
122 | #if __GNUC__ >= 3 |
510 | #if __GNUC__ |
123 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
511 | typedef signed long long int64_t; |
124 | # define inline inline |
512 | typedef unsigned long long uint64_t; |
|
|
513 | #else /* _MSC_VER || __BORLANDC__ */ |
|
|
514 | typedef signed __int64 int64_t; |
|
|
515 | typedef unsigned __int64 uint64_t; |
|
|
516 | #endif |
125 | #else |
517 | #else |
126 | # define expect(expr,value) (expr) |
518 | #include <inttypes.h> |
127 | # define inline static |
519 | #endif |
|
|
520 | |
|
|
521 | /* many compilers define _GNUC_ to some versions but then only implement |
|
|
522 | * what their idiot authors think are the "more important" extensions, |
|
|
523 | * causing enormous grief in return for some better fake benchmark numbers. |
|
|
524 | * or so. |
|
|
525 | * we try to detect these and simply assume they are not gcc - if they have |
|
|
526 | * an issue with that they should have done it right in the first place. |
|
|
527 | */ |
|
|
528 | #ifndef ECB_GCC_VERSION |
|
|
529 | #if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__) |
|
|
530 | #define ECB_GCC_VERSION(major,minor) 0 |
|
|
531 | #else |
|
|
532 | #define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor))) |
128 | #endif |
533 | #endif |
129 | |
534 | #endif |
130 | #define expect_false(expr) expect ((expr) != 0, 0) |
|
|
131 | #define expect_true(expr) expect ((expr) != 0, 1) |
|
|
132 | |
|
|
133 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
134 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
|
|
135 | |
|
|
136 | typedef struct ev_watcher *W; |
|
|
137 | typedef struct ev_watcher_list *WL; |
|
|
138 | typedef struct ev_watcher_time *WT; |
|
|
139 | |
|
|
140 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
141 | |
535 | |
142 | /*****************************************************************************/ |
536 | /*****************************************************************************/ |
143 | |
537 | |
|
|
538 | /* ECB_NO_THREADS - ecb is not used by multiple threads, ever */ |
|
|
539 | /* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */ |
|
|
540 | |
|
|
541 | #if ECB_NO_THREADS || ECB_NO_SMP |
|
|
542 | #define ECB_MEMORY_FENCE do { } while (0) |
|
|
543 | #endif |
|
|
544 | |
|
|
545 | #ifndef ECB_MEMORY_FENCE |
|
|
546 | #if ECB_GCC_VERSION(2,5) |
|
|
547 | #if __i386__ |
|
|
548 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory") |
|
|
549 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */ |
|
|
550 | #define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */ |
|
|
551 | #elif __amd64 |
|
|
552 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory") |
|
|
553 | #define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory") |
|
|
554 | #define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */ |
|
|
555 | #elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ |
|
|
556 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory") |
|
|
557 | #elif defined(__ARM_ARCH_6__ ) || defined(__ARM_ARCH_6J__ ) \ |
|
|
558 | || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6ZK__) |
|
|
559 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory") |
|
|
560 | #elif defined(__ARM_ARCH_7__ ) || defined(__ARM_ARCH_7A__ ) \ |
|
|
561 | || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7R__ ) |
|
|
562 | #define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory") |
|
|
563 | #endif |
|
|
564 | #endif |
|
|
565 | #endif |
|
|
566 | |
|
|
567 | #ifndef ECB_MEMORY_FENCE |
|
|
568 | #if ECB_GCC_VERSION(4,4) || defined(__INTEL_COMPILER) |
|
|
569 | #define ECB_MEMORY_FENCE __sync_synchronize () |
|
|
570 | /*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */ |
|
|
571 | /*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */ |
|
|
572 | #elif _MSC_VER >= 1400 /* VC++ 2005 */ |
|
|
573 | #pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier) |
|
|
574 | #define ECB_MEMORY_FENCE _ReadWriteBarrier () |
|
|
575 | #define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */ |
|
|
576 | #define ECB_MEMORY_FENCE_RELEASE _WriteBarrier () |
|
|
577 | #elif defined(_WIN32) |
|
|
578 | #include <WinNT.h> |
|
|
579 | #define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */ |
|
|
580 | #endif |
|
|
581 | #endif |
|
|
582 | |
|
|
583 | #ifndef ECB_MEMORY_FENCE |
|
|
584 | #if !ECB_AVOID_PTHREADS |
|
|
585 | /* |
|
|
586 | * if you get undefined symbol references to pthread_mutex_lock, |
|
|
587 | * or failure to find pthread.h, then you should implement |
|
|
588 | * the ECB_MEMORY_FENCE operations for your cpu/compiler |
|
|
589 | * OR provide pthread.h and link against the posix thread library |
|
|
590 | * of your system. |
|
|
591 | */ |
|
|
592 | #include <pthread.h> |
|
|
593 | #define ECB_NEEDS_PTHREADS 1 |
|
|
594 | #define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1 |
|
|
595 | |
|
|
596 | static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER; |
|
|
597 | #define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0) |
|
|
598 | #endif |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | #if !defined(ECB_MEMORY_FENCE_ACQUIRE) && defined(ECB_MEMORY_FENCE) |
|
|
602 | #define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
603 | #endif |
|
|
604 | |
|
|
605 | #if !defined(ECB_MEMORY_FENCE_RELEASE) && defined(ECB_MEMORY_FENCE) |
|
|
606 | #define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
607 | #endif |
|
|
608 | |
|
|
609 | /*****************************************************************************/ |
|
|
610 | |
|
|
611 | #define ECB_C99 (__STDC_VERSION__ >= 199901L) |
|
|
612 | |
|
|
613 | #if __cplusplus |
|
|
614 | #define ecb_inline static inline |
|
|
615 | #elif ECB_GCC_VERSION(2,5) |
|
|
616 | #define ecb_inline static __inline__ |
|
|
617 | #elif ECB_C99 |
|
|
618 | #define ecb_inline static inline |
|
|
619 | #else |
|
|
620 | #define ecb_inline static |
|
|
621 | #endif |
|
|
622 | |
|
|
623 | #if ECB_GCC_VERSION(3,3) |
|
|
624 | #define ecb_restrict __restrict__ |
|
|
625 | #elif ECB_C99 |
|
|
626 | #define ecb_restrict restrict |
|
|
627 | #else |
|
|
628 | #define ecb_restrict |
|
|
629 | #endif |
|
|
630 | |
|
|
631 | typedef int ecb_bool; |
|
|
632 | |
|
|
633 | #define ECB_CONCAT_(a, b) a ## b |
|
|
634 | #define ECB_CONCAT(a, b) ECB_CONCAT_(a, b) |
|
|
635 | #define ECB_STRINGIFY_(a) # a |
|
|
636 | #define ECB_STRINGIFY(a) ECB_STRINGIFY_(a) |
|
|
637 | |
|
|
638 | #define ecb_function_ ecb_inline |
|
|
639 | |
|
|
640 | #if ECB_GCC_VERSION(3,1) |
|
|
641 | #define ecb_attribute(attrlist) __attribute__(attrlist) |
|
|
642 | #define ecb_is_constant(expr) __builtin_constant_p (expr) |
|
|
643 | #define ecb_expect(expr,value) __builtin_expect ((expr),(value)) |
|
|
644 | #define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality) |
|
|
645 | #else |
|
|
646 | #define ecb_attribute(attrlist) |
|
|
647 | #define ecb_is_constant(expr) 0 |
|
|
648 | #define ecb_expect(expr,value) (expr) |
|
|
649 | #define ecb_prefetch(addr,rw,locality) |
|
|
650 | #endif |
|
|
651 | |
|
|
652 | /* no emulation for ecb_decltype */ |
|
|
653 | #if ECB_GCC_VERSION(4,5) |
|
|
654 | #define ecb_decltype(x) __decltype(x) |
|
|
655 | #elif ECB_GCC_VERSION(3,0) |
|
|
656 | #define ecb_decltype(x) __typeof(x) |
|
|
657 | #endif |
|
|
658 | |
|
|
659 | #define ecb_noinline ecb_attribute ((__noinline__)) |
|
|
660 | #define ecb_noreturn ecb_attribute ((__noreturn__)) |
|
|
661 | #define ecb_unused ecb_attribute ((__unused__)) |
|
|
662 | #define ecb_const ecb_attribute ((__const__)) |
|
|
663 | #define ecb_pure ecb_attribute ((__pure__)) |
|
|
664 | |
|
|
665 | #if ECB_GCC_VERSION(4,3) |
|
|
666 | #define ecb_artificial ecb_attribute ((__artificial__)) |
|
|
667 | #define ecb_hot ecb_attribute ((__hot__)) |
|
|
668 | #define ecb_cold ecb_attribute ((__cold__)) |
|
|
669 | #else |
|
|
670 | #define ecb_artificial |
|
|
671 | #define ecb_hot |
|
|
672 | #define ecb_cold |
|
|
673 | #endif |
|
|
674 | |
|
|
675 | /* put around conditional expressions if you are very sure that the */ |
|
|
676 | /* expression is mostly true or mostly false. note that these return */ |
|
|
677 | /* booleans, not the expression. */ |
|
|
678 | #define ecb_expect_false(expr) ecb_expect (!!(expr), 0) |
|
|
679 | #define ecb_expect_true(expr) ecb_expect (!!(expr), 1) |
|
|
680 | /* for compatibility to the rest of the world */ |
|
|
681 | #define ecb_likely(expr) ecb_expect_true (expr) |
|
|
682 | #define ecb_unlikely(expr) ecb_expect_false (expr) |
|
|
683 | |
|
|
684 | /* count trailing zero bits and count # of one bits */ |
|
|
685 | #if ECB_GCC_VERSION(3,4) |
|
|
686 | /* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */ |
|
|
687 | #define ecb_ld32(x) (__builtin_clz (x) ^ 31) |
|
|
688 | #define ecb_ld64(x) (__builtin_clzll (x) ^ 63) |
|
|
689 | #define ecb_ctz32(x) __builtin_ctz (x) |
|
|
690 | #define ecb_ctz64(x) __builtin_ctzll (x) |
|
|
691 | #define ecb_popcount32(x) __builtin_popcount (x) |
|
|
692 | /* no popcountll */ |
|
|
693 | #else |
|
|
694 | ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const; |
|
|
695 | ecb_function_ int |
|
|
696 | ecb_ctz32 (uint32_t x) |
|
|
697 | { |
|
|
698 | int r = 0; |
|
|
699 | |
|
|
700 | x &= ~x + 1; /* this isolates the lowest bit */ |
|
|
701 | |
|
|
702 | #if ECB_branchless_on_i386 |
|
|
703 | r += !!(x & 0xaaaaaaaa) << 0; |
|
|
704 | r += !!(x & 0xcccccccc) << 1; |
|
|
705 | r += !!(x & 0xf0f0f0f0) << 2; |
|
|
706 | r += !!(x & 0xff00ff00) << 3; |
|
|
707 | r += !!(x & 0xffff0000) << 4; |
|
|
708 | #else |
|
|
709 | if (x & 0xaaaaaaaa) r += 1; |
|
|
710 | if (x & 0xcccccccc) r += 2; |
|
|
711 | if (x & 0xf0f0f0f0) r += 4; |
|
|
712 | if (x & 0xff00ff00) r += 8; |
|
|
713 | if (x & 0xffff0000) r += 16; |
|
|
714 | #endif |
|
|
715 | |
|
|
716 | return r; |
|
|
717 | } |
|
|
718 | |
|
|
719 | ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const; |
|
|
720 | ecb_function_ int |
|
|
721 | ecb_ctz64 (uint64_t x) |
|
|
722 | { |
|
|
723 | int shift = x & 0xffffffffU ? 0 : 32; |
|
|
724 | return ecb_ctz32 (x >> shift) + shift; |
|
|
725 | } |
|
|
726 | |
|
|
727 | ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const; |
|
|
728 | ecb_function_ int |
|
|
729 | ecb_popcount32 (uint32_t x) |
|
|
730 | { |
|
|
731 | x -= (x >> 1) & 0x55555555; |
|
|
732 | x = ((x >> 2) & 0x33333333) + (x & 0x33333333); |
|
|
733 | x = ((x >> 4) + x) & 0x0f0f0f0f; |
|
|
734 | x *= 0x01010101; |
|
|
735 | |
|
|
736 | return x >> 24; |
|
|
737 | } |
|
|
738 | |
|
|
739 | ecb_function_ int ecb_ld32 (uint32_t x) ecb_const; |
|
|
740 | ecb_function_ int ecb_ld32 (uint32_t x) |
|
|
741 | { |
|
|
742 | int r = 0; |
|
|
743 | |
|
|
744 | if (x >> 16) { x >>= 16; r += 16; } |
|
|
745 | if (x >> 8) { x >>= 8; r += 8; } |
|
|
746 | if (x >> 4) { x >>= 4; r += 4; } |
|
|
747 | if (x >> 2) { x >>= 2; r += 2; } |
|
|
748 | if (x >> 1) { r += 1; } |
|
|
749 | |
|
|
750 | return r; |
|
|
751 | } |
|
|
752 | |
|
|
753 | ecb_function_ int ecb_ld64 (uint64_t x) ecb_const; |
|
|
754 | ecb_function_ int ecb_ld64 (uint64_t x) |
|
|
755 | { |
|
|
756 | int r = 0; |
|
|
757 | |
|
|
758 | if (x >> 32) { x >>= 32; r += 32; } |
|
|
759 | |
|
|
760 | return r + ecb_ld32 (x); |
|
|
761 | } |
|
|
762 | #endif |
|
|
763 | |
|
|
764 | /* popcount64 is only available on 64 bit cpus as gcc builtin */ |
|
|
765 | /* so for this version we are lazy */ |
|
|
766 | ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const; |
|
|
767 | ecb_function_ int |
|
|
768 | ecb_popcount64 (uint64_t x) |
|
|
769 | { |
|
|
770 | return ecb_popcount32 (x) + ecb_popcount32 (x >> 32); |
|
|
771 | } |
|
|
772 | |
|
|
773 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const; |
|
|
774 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const; |
|
|
775 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const; |
|
|
776 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const; |
|
|
777 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const; |
|
|
778 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const; |
|
|
779 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const; |
|
|
780 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const; |
|
|
781 | |
|
|
782 | ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); } |
|
|
783 | ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); } |
|
|
784 | ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); } |
|
|
785 | ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); } |
|
|
786 | ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); } |
|
|
787 | ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); } |
|
|
788 | ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); } |
|
|
789 | ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); } |
|
|
790 | |
|
|
791 | #if ECB_GCC_VERSION(4,3) |
|
|
792 | #define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16) |
|
|
793 | #define ecb_bswap32(x) __builtin_bswap32 (x) |
|
|
794 | #define ecb_bswap64(x) __builtin_bswap64 (x) |
|
|
795 | #else |
|
|
796 | ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const; |
|
|
797 | ecb_function_ uint16_t |
|
|
798 | ecb_bswap16 (uint16_t x) |
|
|
799 | { |
|
|
800 | return ecb_rotl16 (x, 8); |
|
|
801 | } |
|
|
802 | |
|
|
803 | ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const; |
|
|
804 | ecb_function_ uint32_t |
|
|
805 | ecb_bswap32 (uint32_t x) |
|
|
806 | { |
|
|
807 | return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16); |
|
|
808 | } |
|
|
809 | |
|
|
810 | ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const; |
|
|
811 | ecb_function_ uint64_t |
|
|
812 | ecb_bswap64 (uint64_t x) |
|
|
813 | { |
|
|
814 | return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32); |
|
|
815 | } |
|
|
816 | #endif |
|
|
817 | |
|
|
818 | #if ECB_GCC_VERSION(4,5) |
|
|
819 | #define ecb_unreachable() __builtin_unreachable () |
|
|
820 | #else |
|
|
821 | /* this seems to work fine, but gcc always emits a warning for it :/ */ |
|
|
822 | ecb_function_ void ecb_unreachable (void) ecb_noreturn; |
|
|
823 | ecb_function_ void ecb_unreachable (void) { } |
|
|
824 | #endif |
|
|
825 | |
|
|
826 | /* try to tell the compiler that some condition is definitely true */ |
|
|
827 | #define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0) |
|
|
828 | |
|
|
829 | ecb_function_ unsigned char ecb_byteorder_helper (void) ecb_const; |
|
|
830 | ecb_function_ unsigned char |
|
|
831 | ecb_byteorder_helper (void) |
|
|
832 | { |
|
|
833 | const uint32_t u = 0x11223344; |
|
|
834 | return *(unsigned char *)&u; |
|
|
835 | } |
|
|
836 | |
|
|
837 | ecb_function_ ecb_bool ecb_big_endian (void) ecb_const; |
|
|
838 | ecb_function_ ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; } |
|
|
839 | ecb_function_ ecb_bool ecb_little_endian (void) ecb_const; |
|
|
840 | ecb_function_ ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; } |
|
|
841 | |
|
|
842 | #if ECB_GCC_VERSION(3,0) || ECB_C99 |
|
|
843 | #define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0)) |
|
|
844 | #else |
|
|
845 | #define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n))) |
|
|
846 | #endif |
|
|
847 | |
|
|
848 | #if ecb_cplusplus_does_not_suck |
|
|
849 | /* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */ |
|
|
850 | template<typename T, int N> |
|
|
851 | static inline int ecb_array_length (const T (&arr)[N]) |
|
|
852 | { |
|
|
853 | return N; |
|
|
854 | } |
|
|
855 | #else |
|
|
856 | #define ecb_array_length(name) (sizeof (name) / sizeof (name [0])) |
|
|
857 | #endif |
|
|
858 | |
|
|
859 | #endif |
|
|
860 | |
|
|
861 | /* ECB.H END */ |
|
|
862 | |
|
|
863 | #if ECB_MEMORY_FENCE_NEEDS_PTHREADS |
|
|
864 | /* if your architetcure doesn't need memory fences, e.g. because it is |
|
|
865 | * single-cpu/core, or if you use libev in a project that doesn't use libev |
|
|
866 | * from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling |
|
|
867 | * libev, in which casess the memory fences become nops. |
|
|
868 | * alternatively, you can remove this #error and link against libpthread, |
|
|
869 | * which will then provide the memory fences. |
|
|
870 | */ |
|
|
871 | # error "memory fences not defined for your architecture, please report" |
|
|
872 | #endif |
|
|
873 | |
|
|
874 | #ifndef ECB_MEMORY_FENCE |
|
|
875 | # define ECB_MEMORY_FENCE do { } while (0) |
|
|
876 | # define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE |
|
|
877 | # define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE |
|
|
878 | #endif |
|
|
879 | |
|
|
880 | #define expect_false(cond) ecb_expect_false (cond) |
|
|
881 | #define expect_true(cond) ecb_expect_true (cond) |
|
|
882 | #define noinline ecb_noinline |
|
|
883 | |
|
|
884 | #define inline_size ecb_inline |
|
|
885 | |
|
|
886 | #if EV_FEATURE_CODE |
|
|
887 | # define inline_speed ecb_inline |
|
|
888 | #else |
|
|
889 | # define inline_speed static noinline |
|
|
890 | #endif |
|
|
891 | |
|
|
892 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
|
|
893 | |
|
|
894 | #if EV_MINPRI == EV_MAXPRI |
|
|
895 | # define ABSPRI(w) (((W)w), 0) |
|
|
896 | #else |
|
|
897 | # define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
|
|
898 | #endif |
|
|
899 | |
|
|
900 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
|
|
901 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
|
|
902 | |
|
|
903 | typedef ev_watcher *W; |
|
|
904 | typedef ev_watcher_list *WL; |
|
|
905 | typedef ev_watcher_time *WT; |
|
|
906 | |
|
|
907 | #define ev_active(w) ((W)(w))->active |
|
|
908 | #define ev_at(w) ((WT)(w))->at |
|
|
909 | |
|
|
910 | #if EV_USE_REALTIME |
|
|
911 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
|
|
912 | /* giving it a reasonably high chance of working on typical architectures */ |
|
|
913 | static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */ |
|
|
914 | #endif |
|
|
915 | |
|
|
916 | #if EV_USE_MONOTONIC |
|
|
917 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
918 | #endif |
|
|
919 | |
|
|
920 | #ifndef EV_FD_TO_WIN32_HANDLE |
|
|
921 | # define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd) |
|
|
922 | #endif |
|
|
923 | #ifndef EV_WIN32_HANDLE_TO_FD |
|
|
924 | # define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0) |
|
|
925 | #endif |
|
|
926 | #ifndef EV_WIN32_CLOSE_FD |
|
|
927 | # define EV_WIN32_CLOSE_FD(fd) close (fd) |
|
|
928 | #endif |
|
|
929 | |
|
|
930 | #ifdef _WIN32 |
|
|
931 | # include "ev_win32.c" |
|
|
932 | #endif |
|
|
933 | |
|
|
934 | /*****************************************************************************/ |
|
|
935 | |
|
|
936 | /* define a suitable floor function (only used by periodics atm) */ |
|
|
937 | |
|
|
938 | #if EV_USE_FLOOR |
|
|
939 | # include <math.h> |
|
|
940 | # define ev_floor(v) floor (v) |
|
|
941 | #else |
|
|
942 | |
|
|
943 | #include <float.h> |
|
|
944 | |
|
|
945 | /* a floor() replacement function, should be independent of ev_tstamp type */ |
|
|
946 | static ev_tstamp noinline |
|
|
947 | ev_floor (ev_tstamp v) |
|
|
948 | { |
|
|
949 | /* the choice of shift factor is not terribly important */ |
|
|
950 | #if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */ |
|
|
951 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.; |
|
|
952 | #else |
|
|
953 | const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.; |
|
|
954 | #endif |
|
|
955 | |
|
|
956 | /* argument too large for an unsigned long? */ |
|
|
957 | if (expect_false (v >= shift)) |
|
|
958 | { |
|
|
959 | ev_tstamp f; |
|
|
960 | |
|
|
961 | if (v == v - 1.) |
|
|
962 | return v; /* very large number */ |
|
|
963 | |
|
|
964 | f = shift * ev_floor (v * (1. / shift)); |
|
|
965 | return f + ev_floor (v - f); |
|
|
966 | } |
|
|
967 | |
|
|
968 | /* special treatment for negative args? */ |
|
|
969 | if (expect_false (v < 0.)) |
|
|
970 | { |
|
|
971 | ev_tstamp f = -ev_floor (-v); |
|
|
972 | |
|
|
973 | return f - (f == v ? 0 : 1); |
|
|
974 | } |
|
|
975 | |
|
|
976 | /* fits into an unsigned long */ |
|
|
977 | return (unsigned long)v; |
|
|
978 | } |
|
|
979 | |
|
|
980 | #endif |
|
|
981 | |
|
|
982 | /*****************************************************************************/ |
|
|
983 | |
|
|
984 | #ifdef __linux |
|
|
985 | # include <sys/utsname.h> |
|
|
986 | #endif |
|
|
987 | |
|
|
988 | static unsigned int noinline ecb_cold |
|
|
989 | ev_linux_version (void) |
|
|
990 | { |
|
|
991 | #ifdef __linux |
|
|
992 | unsigned int v = 0; |
|
|
993 | struct utsname buf; |
|
|
994 | int i; |
|
|
995 | char *p = buf.release; |
|
|
996 | |
|
|
997 | if (uname (&buf)) |
|
|
998 | return 0; |
|
|
999 | |
|
|
1000 | for (i = 3+1; --i; ) |
|
|
1001 | { |
|
|
1002 | unsigned int c = 0; |
|
|
1003 | |
|
|
1004 | for (;;) |
|
|
1005 | { |
|
|
1006 | if (*p >= '0' && *p <= '9') |
|
|
1007 | c = c * 10 + *p++ - '0'; |
|
|
1008 | else |
|
|
1009 | { |
|
|
1010 | p += *p == '.'; |
|
|
1011 | break; |
|
|
1012 | } |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | v = (v << 8) | c; |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | return v; |
|
|
1019 | #else |
|
|
1020 | return 0; |
|
|
1021 | #endif |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | /*****************************************************************************/ |
|
|
1025 | |
|
|
1026 | #if EV_AVOID_STDIO |
|
|
1027 | static void noinline ecb_cold |
|
|
1028 | ev_printerr (const char *msg) |
|
|
1029 | { |
|
|
1030 | write (STDERR_FILENO, msg, strlen (msg)); |
|
|
1031 | } |
|
|
1032 | #endif |
|
|
1033 | |
|
|
1034 | static void (*syserr_cb)(const char *msg); |
|
|
1035 | |
|
|
1036 | void ecb_cold |
|
|
1037 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
1038 | { |
|
|
1039 | syserr_cb = cb; |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | static void noinline ecb_cold |
|
|
1043 | ev_syserr (const char *msg) |
|
|
1044 | { |
|
|
1045 | if (!msg) |
|
|
1046 | msg = "(libev) system error"; |
|
|
1047 | |
|
|
1048 | if (syserr_cb) |
|
|
1049 | syserr_cb (msg); |
|
|
1050 | else |
|
|
1051 | { |
|
|
1052 | #if EV_AVOID_STDIO |
|
|
1053 | ev_printerr (msg); |
|
|
1054 | ev_printerr (": "); |
|
|
1055 | ev_printerr (strerror (errno)); |
|
|
1056 | ev_printerr ("\n"); |
|
|
1057 | #else |
|
|
1058 | perror (msg); |
|
|
1059 | #endif |
|
|
1060 | abort (); |
|
|
1061 | } |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | static void * |
|
|
1065 | ev_realloc_emul (void *ptr, long size) |
|
|
1066 | { |
|
|
1067 | #if __GLIBC__ |
|
|
1068 | return realloc (ptr, size); |
|
|
1069 | #else |
|
|
1070 | /* some systems, notably openbsd and darwin, fail to properly |
|
|
1071 | * implement realloc (x, 0) (as required by both ansi c-89 and |
|
|
1072 | * the single unix specification, so work around them here. |
|
|
1073 | */ |
|
|
1074 | |
|
|
1075 | if (size) |
|
|
1076 | return realloc (ptr, size); |
|
|
1077 | |
|
|
1078 | free (ptr); |
|
|
1079 | return 0; |
|
|
1080 | #endif |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
|
|
1084 | |
|
|
1085 | void ecb_cold |
|
|
1086 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
1087 | { |
|
|
1088 | alloc = cb; |
|
|
1089 | } |
|
|
1090 | |
|
|
1091 | inline_speed void * |
|
|
1092 | ev_realloc (void *ptr, long size) |
|
|
1093 | { |
|
|
1094 | ptr = alloc (ptr, size); |
|
|
1095 | |
|
|
1096 | if (!ptr && size) |
|
|
1097 | { |
|
|
1098 | #if EV_AVOID_STDIO |
|
|
1099 | ev_printerr ("(libev) memory allocation failed, aborting.\n"); |
|
|
1100 | #else |
|
|
1101 | fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size); |
|
|
1102 | #endif |
|
|
1103 | abort (); |
|
|
1104 | } |
|
|
1105 | |
|
|
1106 | return ptr; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
1110 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
1111 | |
|
|
1112 | /*****************************************************************************/ |
|
|
1113 | |
|
|
1114 | /* set in reify when reification needed */ |
|
|
1115 | #define EV_ANFD_REIFY 1 |
|
|
1116 | |
|
|
1117 | /* file descriptor info structure */ |
144 | typedef struct |
1118 | typedef struct |
145 | { |
1119 | { |
146 | struct ev_watcher_list *head; |
1120 | WL head; |
147 | unsigned char events; |
1121 | unsigned char events; /* the events watched for */ |
|
|
1122 | unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */ |
|
|
1123 | unsigned char emask; /* the epoll backend stores the actual kernel mask in here */ |
148 | unsigned char reify; |
1124 | unsigned char unused; |
|
|
1125 | #if EV_USE_EPOLL |
|
|
1126 | unsigned int egen; /* generation counter to counter epoll bugs */ |
|
|
1127 | #endif |
|
|
1128 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
|
|
1129 | SOCKET handle; |
|
|
1130 | #endif |
|
|
1131 | #if EV_USE_IOCP |
|
|
1132 | OVERLAPPED or, ow; |
|
|
1133 | #endif |
149 | } ANFD; |
1134 | } ANFD; |
150 | |
1135 | |
|
|
1136 | /* stores the pending event set for a given watcher */ |
151 | typedef struct |
1137 | typedef struct |
152 | { |
1138 | { |
153 | W w; |
1139 | W w; |
154 | int events; |
1140 | int events; /* the pending event set for the given watcher */ |
155 | } ANPENDING; |
1141 | } ANPENDING; |
156 | |
1142 | |
|
|
1143 | #if EV_USE_INOTIFY |
|
|
1144 | /* hash table entry per inotify-id */ |
|
|
1145 | typedef struct |
|
|
1146 | { |
|
|
1147 | WL head; |
|
|
1148 | } ANFS; |
|
|
1149 | #endif |
|
|
1150 | |
|
|
1151 | /* Heap Entry */ |
|
|
1152 | #if EV_HEAP_CACHE_AT |
|
|
1153 | /* a heap element */ |
|
|
1154 | typedef struct { |
|
|
1155 | ev_tstamp at; |
|
|
1156 | WT w; |
|
|
1157 | } ANHE; |
|
|
1158 | |
|
|
1159 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
1160 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
1161 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
1162 | #else |
|
|
1163 | /* a heap element */ |
|
|
1164 | typedef WT ANHE; |
|
|
1165 | |
|
|
1166 | #define ANHE_w(he) (he) |
|
|
1167 | #define ANHE_at(he) (he)->at |
|
|
1168 | #define ANHE_at_cache(he) |
|
|
1169 | #endif |
|
|
1170 | |
157 | #if EV_MULTIPLICITY |
1171 | #if EV_MULTIPLICITY |
158 | |
1172 | |
159 | struct ev_loop |
1173 | struct ev_loop |
160 | { |
1174 | { |
|
|
1175 | ev_tstamp ev_rt_now; |
|
|
1176 | #define ev_rt_now ((loop)->ev_rt_now) |
161 | # define VAR(name,decl) decl; |
1177 | #define VAR(name,decl) decl; |
162 | # include "ev_vars.h" |
1178 | #include "ev_vars.h" |
163 | }; |
|
|
164 | # undef VAR |
1179 | #undef VAR |
|
|
1180 | }; |
165 | # include "ev_wrap.h" |
1181 | #include "ev_wrap.h" |
|
|
1182 | |
|
|
1183 | static struct ev_loop default_loop_struct; |
|
|
1184 | struct ev_loop *ev_default_loop_ptr; |
166 | |
1185 | |
167 | #else |
1186 | #else |
168 | |
1187 | |
|
|
1188 | ev_tstamp ev_rt_now; |
169 | # define VAR(name,decl) static decl; |
1189 | #define VAR(name,decl) static decl; |
170 | # include "ev_vars.h" |
1190 | #include "ev_vars.h" |
171 | # undef VAR |
1191 | #undef VAR |
172 | |
1192 | |
|
|
1193 | static int ev_default_loop_ptr; |
|
|
1194 | |
173 | #endif |
1195 | #endif |
|
|
1196 | |
|
|
1197 | #if EV_FEATURE_API |
|
|
1198 | # define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A) |
|
|
1199 | # define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A) |
|
|
1200 | # define EV_INVOKE_PENDING invoke_cb (EV_A) |
|
|
1201 | #else |
|
|
1202 | # define EV_RELEASE_CB (void)0 |
|
|
1203 | # define EV_ACQUIRE_CB (void)0 |
|
|
1204 | # define EV_INVOKE_PENDING ev_invoke_pending (EV_A) |
|
|
1205 | #endif |
|
|
1206 | |
|
|
1207 | #define EVBREAK_RECURSE 0x80 |
174 | |
1208 | |
175 | /*****************************************************************************/ |
1209 | /*****************************************************************************/ |
176 | |
1210 | |
177 | inline ev_tstamp |
1211 | #ifndef EV_HAVE_EV_TIME |
|
|
1212 | ev_tstamp |
178 | ev_time (void) |
1213 | ev_time (void) |
179 | { |
1214 | { |
180 | #if EV_USE_REALTIME |
1215 | #if EV_USE_REALTIME |
|
|
1216 | if (expect_true (have_realtime)) |
|
|
1217 | { |
181 | struct timespec ts; |
1218 | struct timespec ts; |
182 | clock_gettime (CLOCK_REALTIME, &ts); |
1219 | clock_gettime (CLOCK_REALTIME, &ts); |
183 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
1220 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
184 | #else |
1221 | } |
|
|
1222 | #endif |
|
|
1223 | |
185 | struct timeval tv; |
1224 | struct timeval tv; |
186 | gettimeofday (&tv, 0); |
1225 | gettimeofday (&tv, 0); |
187 | return tv.tv_sec + tv.tv_usec * 1e-6; |
1226 | return tv.tv_sec + tv.tv_usec * 1e-6; |
188 | #endif |
|
|
189 | } |
1227 | } |
|
|
1228 | #endif |
190 | |
1229 | |
191 | inline ev_tstamp |
1230 | inline_size ev_tstamp |
192 | get_clock (void) |
1231 | get_clock (void) |
193 | { |
1232 | { |
194 | #if EV_USE_MONOTONIC |
1233 | #if EV_USE_MONOTONIC |
195 | if (expect_true (have_monotonic)) |
1234 | if (expect_true (have_monotonic)) |
196 | { |
1235 | { |
… | |
… | |
201 | #endif |
1240 | #endif |
202 | |
1241 | |
203 | return ev_time (); |
1242 | return ev_time (); |
204 | } |
1243 | } |
205 | |
1244 | |
|
|
1245 | #if EV_MULTIPLICITY |
206 | ev_tstamp |
1246 | ev_tstamp |
207 | ev_now (EV_P) |
1247 | ev_now (EV_P) |
208 | { |
1248 | { |
209 | return rt_now; |
1249 | return ev_rt_now; |
210 | } |
1250 | } |
|
|
1251 | #endif |
211 | |
1252 | |
212 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
1253 | void |
213 | |
1254 | ev_sleep (ev_tstamp delay) |
214 | #define array_needsize(base,cur,cnt,init) \ |
1255 | { |
215 | if (expect_false ((cnt) > cur)) \ |
1256 | if (delay > 0.) |
216 | { \ |
|
|
217 | int newcnt = cur; \ |
|
|
218 | do \ |
|
|
219 | { \ |
|
|
220 | newcnt = array_roundsize (base, newcnt << 1); \ |
|
|
221 | } \ |
|
|
222 | while ((cnt) > newcnt); \ |
|
|
223 | \ |
|
|
224 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
|
|
225 | init (base + cur, newcnt - cur); \ |
|
|
226 | cur = newcnt; \ |
|
|
227 | } |
1257 | { |
|
|
1258 | #if EV_USE_NANOSLEEP |
|
|
1259 | struct timespec ts; |
|
|
1260 | |
|
|
1261 | EV_TS_SET (ts, delay); |
|
|
1262 | nanosleep (&ts, 0); |
|
|
1263 | #elif defined(_WIN32) |
|
|
1264 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
1265 | #else |
|
|
1266 | struct timeval tv; |
|
|
1267 | |
|
|
1268 | /* here we rely on sys/time.h + sys/types.h + unistd.h providing select */ |
|
|
1269 | /* something not guaranteed by newer posix versions, but guaranteed */ |
|
|
1270 | /* by older ones */ |
|
|
1271 | EV_TV_SET (tv, delay); |
|
|
1272 | select (0, 0, 0, 0, &tv); |
|
|
1273 | #endif |
|
|
1274 | } |
|
|
1275 | } |
228 | |
1276 | |
229 | /*****************************************************************************/ |
1277 | /*****************************************************************************/ |
230 | |
1278 | |
231 | static void |
1279 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
232 | anfds_init (ANFD *base, int count) |
|
|
233 | { |
|
|
234 | while (count--) |
|
|
235 | { |
|
|
236 | base->head = 0; |
|
|
237 | base->events = EV_NONE; |
|
|
238 | base->reify = 0; |
|
|
239 | |
1280 | |
240 | ++base; |
1281 | /* find a suitable new size for the given array, */ |
|
|
1282 | /* hopefully by rounding to a nice-to-malloc size */ |
|
|
1283 | inline_size int |
|
|
1284 | array_nextsize (int elem, int cur, int cnt) |
|
|
1285 | { |
|
|
1286 | int ncur = cur + 1; |
|
|
1287 | |
|
|
1288 | do |
|
|
1289 | ncur <<= 1; |
|
|
1290 | while (cnt > ncur); |
|
|
1291 | |
|
|
1292 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
1293 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
241 | } |
1294 | { |
242 | } |
1295 | ncur *= elem; |
243 | |
1296 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
244 | static void |
1297 | ncur = ncur - sizeof (void *) * 4; |
245 | event (EV_P_ W w, int events) |
1298 | ncur /= elem; |
246 | { |
|
|
247 | if (w->pending) |
|
|
248 | { |
1299 | } |
|
|
1300 | |
|
|
1301 | return ncur; |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | static void * noinline ecb_cold |
|
|
1305 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
1306 | { |
|
|
1307 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
1308 | return ev_realloc (base, elem * *cur); |
|
|
1309 | } |
|
|
1310 | |
|
|
1311 | #define array_init_zero(base,count) \ |
|
|
1312 | memset ((void *)(base), 0, sizeof (*(base)) * (count)) |
|
|
1313 | |
|
|
1314 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
1315 | if (expect_false ((cnt) > (cur))) \ |
|
|
1316 | { \ |
|
|
1317 | int ecb_unused ocur_ = (cur); \ |
|
|
1318 | (base) = (type *)array_realloc \ |
|
|
1319 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
1320 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | #if 0 |
|
|
1324 | #define array_slim(type,stem) \ |
|
|
1325 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
1326 | { \ |
|
|
1327 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
1328 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
1329 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
1330 | } |
|
|
1331 | #endif |
|
|
1332 | |
|
|
1333 | #define array_free(stem, idx) \ |
|
|
1334 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0 |
|
|
1335 | |
|
|
1336 | /*****************************************************************************/ |
|
|
1337 | |
|
|
1338 | /* dummy callback for pending events */ |
|
|
1339 | static void noinline |
|
|
1340 | pendingcb (EV_P_ ev_prepare *w, int revents) |
|
|
1341 | { |
|
|
1342 | } |
|
|
1343 | |
|
|
1344 | void noinline |
|
|
1345 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
1346 | { |
|
|
1347 | W w_ = (W)w; |
|
|
1348 | int pri = ABSPRI (w_); |
|
|
1349 | |
|
|
1350 | if (expect_false (w_->pending)) |
|
|
1351 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
1352 | else |
|
|
1353 | { |
|
|
1354 | w_->pending = ++pendingcnt [pri]; |
|
|
1355 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
1356 | pendings [pri][w_->pending - 1].w = w_; |
249 | pendings [ABSPRI (w)][w->pending - 1].events |= events; |
1357 | pendings [pri][w_->pending - 1].events = revents; |
250 | return; |
|
|
251 | } |
1358 | } |
252 | |
|
|
253 | w->pending = ++pendingcnt [ABSPRI (w)]; |
|
|
254 | array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], ); |
|
|
255 | pendings [ABSPRI (w)][w->pending - 1].w = w; |
|
|
256 | pendings [ABSPRI (w)][w->pending - 1].events = events; |
|
|
257 | } |
1359 | } |
258 | |
1360 | |
259 | static void |
1361 | inline_speed void |
|
|
1362 | feed_reverse (EV_P_ W w) |
|
|
1363 | { |
|
|
1364 | array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2); |
|
|
1365 | rfeeds [rfeedcnt++] = w; |
|
|
1366 | } |
|
|
1367 | |
|
|
1368 | inline_size void |
|
|
1369 | feed_reverse_done (EV_P_ int revents) |
|
|
1370 | { |
|
|
1371 | do |
|
|
1372 | ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents); |
|
|
1373 | while (rfeedcnt); |
|
|
1374 | } |
|
|
1375 | |
|
|
1376 | inline_speed void |
260 | queue_events (EV_P_ W *events, int eventcnt, int type) |
1377 | queue_events (EV_P_ W *events, int eventcnt, int type) |
261 | { |
1378 | { |
262 | int i; |
1379 | int i; |
263 | |
1380 | |
264 | for (i = 0; i < eventcnt; ++i) |
1381 | for (i = 0; i < eventcnt; ++i) |
265 | event (EV_A_ events [i], type); |
1382 | ev_feed_event (EV_A_ events [i], type); |
266 | } |
1383 | } |
267 | |
1384 | |
268 | static void |
1385 | /*****************************************************************************/ |
|
|
1386 | |
|
|
1387 | inline_speed void |
269 | fd_event (EV_P_ int fd, int events) |
1388 | fd_event_nocheck (EV_P_ int fd, int revents) |
270 | { |
1389 | { |
271 | ANFD *anfd = anfds + fd; |
1390 | ANFD *anfd = anfds + fd; |
272 | struct ev_io *w; |
1391 | ev_io *w; |
273 | |
1392 | |
274 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
1393 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
275 | { |
1394 | { |
276 | int ev = w->events & events; |
1395 | int ev = w->events & revents; |
277 | |
1396 | |
278 | if (ev) |
1397 | if (ev) |
279 | event (EV_A_ (W)w, ev); |
1398 | ev_feed_event (EV_A_ (W)w, ev); |
280 | } |
1399 | } |
281 | } |
1400 | } |
282 | |
1401 | |
283 | /*****************************************************************************/ |
1402 | /* do not submit kernel events for fds that have reify set */ |
|
|
1403 | /* because that means they changed while we were polling for new events */ |
|
|
1404 | inline_speed void |
|
|
1405 | fd_event (EV_P_ int fd, int revents) |
|
|
1406 | { |
|
|
1407 | ANFD *anfd = anfds + fd; |
284 | |
1408 | |
285 | static void |
1409 | if (expect_true (!anfd->reify)) |
|
|
1410 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1411 | } |
|
|
1412 | |
|
|
1413 | void |
|
|
1414 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
1415 | { |
|
|
1416 | if (fd >= 0 && fd < anfdmax) |
|
|
1417 | fd_event_nocheck (EV_A_ fd, revents); |
|
|
1418 | } |
|
|
1419 | |
|
|
1420 | /* make sure the external fd watch events are in-sync */ |
|
|
1421 | /* with the kernel/libev internal state */ |
|
|
1422 | inline_size void |
286 | fd_reify (EV_P) |
1423 | fd_reify (EV_P) |
287 | { |
1424 | { |
288 | int i; |
1425 | int i; |
289 | |
1426 | |
|
|
1427 | #if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP |
290 | for (i = 0; i < fdchangecnt; ++i) |
1428 | for (i = 0; i < fdchangecnt; ++i) |
291 | { |
1429 | { |
292 | int fd = fdchanges [i]; |
1430 | int fd = fdchanges [i]; |
293 | ANFD *anfd = anfds + fd; |
1431 | ANFD *anfd = anfds + fd; |
294 | struct ev_io *w; |
|
|
295 | |
1432 | |
296 | int events = 0; |
1433 | if (anfd->reify & EV__IOFDSET && anfd->head) |
297 | |
|
|
298 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
|
|
299 | events |= w->events; |
|
|
300 | |
|
|
301 | anfd->reify = 0; |
|
|
302 | |
|
|
303 | if (anfd->events != events) |
|
|
304 | { |
1434 | { |
|
|
1435 | SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
1436 | |
|
|
1437 | if (handle != anfd->handle) |
|
|
1438 | { |
|
|
1439 | unsigned long arg; |
|
|
1440 | |
|
|
1441 | assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0)); |
|
|
1442 | |
|
|
1443 | /* handle changed, but fd didn't - we need to do it in two steps */ |
305 | method_modify (EV_A_ fd, anfd->events, events); |
1444 | backend_modify (EV_A_ fd, anfd->events, 0); |
306 | anfd->events = events; |
1445 | anfd->events = 0; |
|
|
1446 | anfd->handle = handle; |
|
|
1447 | } |
307 | } |
1448 | } |
308 | } |
1449 | } |
|
|
1450 | #endif |
|
|
1451 | |
|
|
1452 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1453 | { |
|
|
1454 | int fd = fdchanges [i]; |
|
|
1455 | ANFD *anfd = anfds + fd; |
|
|
1456 | ev_io *w; |
|
|
1457 | |
|
|
1458 | unsigned char o_events = anfd->events; |
|
|
1459 | unsigned char o_reify = anfd->reify; |
|
|
1460 | |
|
|
1461 | anfd->reify = 0; |
|
|
1462 | |
|
|
1463 | /*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */ |
|
|
1464 | { |
|
|
1465 | anfd->events = 0; |
|
|
1466 | |
|
|
1467 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
1468 | anfd->events |= (unsigned char)w->events; |
|
|
1469 | |
|
|
1470 | if (o_events != anfd->events) |
|
|
1471 | o_reify = EV__IOFDSET; /* actually |= */ |
|
|
1472 | } |
|
|
1473 | |
|
|
1474 | if (o_reify & EV__IOFDSET) |
|
|
1475 | backend_modify (EV_A_ fd, o_events, anfd->events); |
|
|
1476 | } |
309 | |
1477 | |
310 | fdchangecnt = 0; |
1478 | fdchangecnt = 0; |
311 | } |
1479 | } |
312 | |
1480 | |
313 | static void |
1481 | /* something about the given fd changed */ |
|
|
1482 | inline_size void |
314 | fd_change (EV_P_ int fd) |
1483 | fd_change (EV_P_ int fd, int flags) |
315 | { |
1484 | { |
316 | if (anfds [fd].reify || fdchangecnt < 0) |
1485 | unsigned char reify = anfds [fd].reify; |
317 | return; |
|
|
318 | |
|
|
319 | anfds [fd].reify = 1; |
1486 | anfds [fd].reify |= flags; |
320 | |
1487 | |
|
|
1488 | if (expect_true (!reify)) |
|
|
1489 | { |
321 | ++fdchangecnt; |
1490 | ++fdchangecnt; |
322 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1491 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
323 | fdchanges [fdchangecnt - 1] = fd; |
1492 | fdchanges [fdchangecnt - 1] = fd; |
|
|
1493 | } |
324 | } |
1494 | } |
325 | |
1495 | |
326 | static void |
1496 | /* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */ |
|
|
1497 | inline_speed void ecb_cold |
327 | fd_kill (EV_P_ int fd) |
1498 | fd_kill (EV_P_ int fd) |
328 | { |
1499 | { |
329 | struct ev_io *w; |
1500 | ev_io *w; |
330 | |
1501 | |
331 | while ((w = (struct ev_io *)anfds [fd].head)) |
1502 | while ((w = (ev_io *)anfds [fd].head)) |
332 | { |
1503 | { |
333 | ev_io_stop (EV_A_ w); |
1504 | ev_io_stop (EV_A_ w); |
334 | event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
1505 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
335 | } |
1506 | } |
|
|
1507 | } |
|
|
1508 | |
|
|
1509 | /* check whether the given fd is actually valid, for error recovery */ |
|
|
1510 | inline_size int ecb_cold |
|
|
1511 | fd_valid (int fd) |
|
|
1512 | { |
|
|
1513 | #ifdef _WIN32 |
|
|
1514 | return EV_FD_TO_WIN32_HANDLE (fd) != -1; |
|
|
1515 | #else |
|
|
1516 | return fcntl (fd, F_GETFD) != -1; |
|
|
1517 | #endif |
336 | } |
1518 | } |
337 | |
1519 | |
338 | /* called on EBADF to verify fds */ |
1520 | /* called on EBADF to verify fds */ |
339 | static void |
1521 | static void noinline ecb_cold |
340 | fd_ebadf (EV_P) |
1522 | fd_ebadf (EV_P) |
341 | { |
1523 | { |
342 | int fd; |
1524 | int fd; |
343 | |
1525 | |
344 | for (fd = 0; fd < anfdmax; ++fd) |
1526 | for (fd = 0; fd < anfdmax; ++fd) |
345 | if (anfds [fd].events) |
1527 | if (anfds [fd].events) |
346 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
1528 | if (!fd_valid (fd) && errno == EBADF) |
347 | fd_kill (EV_A_ fd); |
1529 | fd_kill (EV_A_ fd); |
348 | } |
1530 | } |
349 | |
1531 | |
350 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
1532 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
351 | static void |
1533 | static void noinline ecb_cold |
352 | fd_enomem (EV_P) |
1534 | fd_enomem (EV_P) |
353 | { |
1535 | { |
354 | int fd = anfdmax; |
1536 | int fd; |
355 | |
1537 | |
356 | while (fd--) |
1538 | for (fd = anfdmax; fd--; ) |
357 | if (anfds [fd].events) |
1539 | if (anfds [fd].events) |
358 | { |
1540 | { |
359 | close (fd); |
|
|
360 | fd_kill (EV_A_ fd); |
1541 | fd_kill (EV_A_ fd); |
361 | return; |
1542 | break; |
362 | } |
1543 | } |
363 | } |
1544 | } |
364 | |
1545 | |
365 | /* susually called after fork if method needs to re-arm all fds from scratch */ |
1546 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
366 | static void |
1547 | static void noinline |
367 | fd_rearm_all (EV_P) |
1548 | fd_rearm_all (EV_P) |
368 | { |
1549 | { |
369 | int fd; |
1550 | int fd; |
370 | |
1551 | |
371 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
372 | for (fd = 0; fd < anfdmax; ++fd) |
1552 | for (fd = 0; fd < anfdmax; ++fd) |
373 | if (anfds [fd].events) |
1553 | if (anfds [fd].events) |
374 | { |
1554 | { |
375 | anfds [fd].events = 0; |
1555 | anfds [fd].events = 0; |
376 | fd_change (EV_A_ fd); |
1556 | anfds [fd].emask = 0; |
|
|
1557 | fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY); |
377 | } |
1558 | } |
378 | } |
1559 | } |
379 | |
1560 | |
|
|
1561 | /* used to prepare libev internal fd's */ |
|
|
1562 | /* this is not fork-safe */ |
|
|
1563 | inline_speed void |
|
|
1564 | fd_intern (int fd) |
|
|
1565 | { |
|
|
1566 | #ifdef _WIN32 |
|
|
1567 | unsigned long arg = 1; |
|
|
1568 | ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg); |
|
|
1569 | #else |
|
|
1570 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
1571 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
1572 | #endif |
|
|
1573 | } |
|
|
1574 | |
380 | /*****************************************************************************/ |
1575 | /*****************************************************************************/ |
381 | |
1576 | |
|
|
1577 | /* |
|
|
1578 | * the heap functions want a real array index. array index 0 is guaranteed to not |
|
|
1579 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
1580 | * the branching factor of the d-tree. |
|
|
1581 | */ |
|
|
1582 | |
|
|
1583 | /* |
|
|
1584 | * at the moment we allow libev the luxury of two heaps, |
|
|
1585 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
1586 | * which is more cache-efficient. |
|
|
1587 | * the difference is about 5% with 50000+ watchers. |
|
|
1588 | */ |
|
|
1589 | #if EV_USE_4HEAP |
|
|
1590 | |
|
|
1591 | #define DHEAP 4 |
|
|
1592 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
1593 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
1594 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
1595 | |
|
|
1596 | /* away from the root */ |
|
|
1597 | inline_speed void |
|
|
1598 | downheap (ANHE *heap, int N, int k) |
|
|
1599 | { |
|
|
1600 | ANHE he = heap [k]; |
|
|
1601 | ANHE *E = heap + N + HEAP0; |
|
|
1602 | |
|
|
1603 | for (;;) |
|
|
1604 | { |
|
|
1605 | ev_tstamp minat; |
|
|
1606 | ANHE *minpos; |
|
|
1607 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
1608 | |
|
|
1609 | /* find minimum child */ |
|
|
1610 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
1611 | { |
|
|
1612 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1613 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1614 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1615 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1616 | } |
|
|
1617 | else if (pos < E) |
|
|
1618 | { |
|
|
1619 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
1620 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
1621 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
1622 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
1623 | } |
|
|
1624 | else |
|
|
1625 | break; |
|
|
1626 | |
|
|
1627 | if (ANHE_at (he) <= minat) |
|
|
1628 | break; |
|
|
1629 | |
|
|
1630 | heap [k] = *minpos; |
|
|
1631 | ev_active (ANHE_w (*minpos)) = k; |
|
|
1632 | |
|
|
1633 | k = minpos - heap; |
|
|
1634 | } |
|
|
1635 | |
|
|
1636 | heap [k] = he; |
|
|
1637 | ev_active (ANHE_w (he)) = k; |
|
|
1638 | } |
|
|
1639 | |
|
|
1640 | #else /* 4HEAP */ |
|
|
1641 | |
|
|
1642 | #define HEAP0 1 |
|
|
1643 | #define HPARENT(k) ((k) >> 1) |
|
|
1644 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
1645 | |
|
|
1646 | /* away from the root */ |
|
|
1647 | inline_speed void |
|
|
1648 | downheap (ANHE *heap, int N, int k) |
|
|
1649 | { |
|
|
1650 | ANHE he = heap [k]; |
|
|
1651 | |
|
|
1652 | for (;;) |
|
|
1653 | { |
|
|
1654 | int c = k << 1; |
|
|
1655 | |
|
|
1656 | if (c >= N + HEAP0) |
|
|
1657 | break; |
|
|
1658 | |
|
|
1659 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
1660 | ? 1 : 0; |
|
|
1661 | |
|
|
1662 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
1663 | break; |
|
|
1664 | |
|
|
1665 | heap [k] = heap [c]; |
|
|
1666 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1667 | |
|
|
1668 | k = c; |
|
|
1669 | } |
|
|
1670 | |
|
|
1671 | heap [k] = he; |
|
|
1672 | ev_active (ANHE_w (he)) = k; |
|
|
1673 | } |
|
|
1674 | #endif |
|
|
1675 | |
|
|
1676 | /* towards the root */ |
|
|
1677 | inline_speed void |
|
|
1678 | upheap (ANHE *heap, int k) |
|
|
1679 | { |
|
|
1680 | ANHE he = heap [k]; |
|
|
1681 | |
|
|
1682 | for (;;) |
|
|
1683 | { |
|
|
1684 | int p = HPARENT (k); |
|
|
1685 | |
|
|
1686 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
1687 | break; |
|
|
1688 | |
|
|
1689 | heap [k] = heap [p]; |
|
|
1690 | ev_active (ANHE_w (heap [k])) = k; |
|
|
1691 | k = p; |
|
|
1692 | } |
|
|
1693 | |
|
|
1694 | heap [k] = he; |
|
|
1695 | ev_active (ANHE_w (he)) = k; |
|
|
1696 | } |
|
|
1697 | |
|
|
1698 | /* move an element suitably so it is in a correct place */ |
|
|
1699 | inline_size void |
|
|
1700 | adjustheap (ANHE *heap, int N, int k) |
|
|
1701 | { |
|
|
1702 | if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)])) |
|
|
1703 | upheap (heap, k); |
|
|
1704 | else |
|
|
1705 | downheap (heap, N, k); |
|
|
1706 | } |
|
|
1707 | |
|
|
1708 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
1709 | inline_size void |
|
|
1710 | reheap (ANHE *heap, int N) |
|
|
1711 | { |
|
|
1712 | int i; |
|
|
1713 | |
|
|
1714 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
1715 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
1716 | for (i = 0; i < N; ++i) |
|
|
1717 | upheap (heap, i + HEAP0); |
|
|
1718 | } |
|
|
1719 | |
|
|
1720 | /*****************************************************************************/ |
|
|
1721 | |
|
|
1722 | /* associate signal watchers to a signal signal */ |
|
|
1723 | typedef struct |
|
|
1724 | { |
|
|
1725 | EV_ATOMIC_T pending; |
|
|
1726 | #if EV_MULTIPLICITY |
|
|
1727 | EV_P; |
|
|
1728 | #endif |
|
|
1729 | WL head; |
|
|
1730 | } ANSIG; |
|
|
1731 | |
|
|
1732 | static ANSIG signals [EV_NSIG - 1]; |
|
|
1733 | |
|
|
1734 | /*****************************************************************************/ |
|
|
1735 | |
|
|
1736 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
1737 | |
|
|
1738 | static void noinline ecb_cold |
|
|
1739 | evpipe_init (EV_P) |
|
|
1740 | { |
|
|
1741 | if (!ev_is_active (&pipe_w)) |
|
|
1742 | { |
|
|
1743 | # if EV_USE_EVENTFD |
|
|
1744 | evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC); |
|
|
1745 | if (evfd < 0 && errno == EINVAL) |
|
|
1746 | evfd = eventfd (0, 0); |
|
|
1747 | |
|
|
1748 | if (evfd >= 0) |
|
|
1749 | { |
|
|
1750 | evpipe [0] = -1; |
|
|
1751 | fd_intern (evfd); /* doing it twice doesn't hurt */ |
|
|
1752 | ev_io_set (&pipe_w, evfd, EV_READ); |
|
|
1753 | } |
|
|
1754 | else |
|
|
1755 | # endif |
|
|
1756 | { |
|
|
1757 | while (pipe (evpipe)) |
|
|
1758 | ev_syserr ("(libev) error creating signal/async pipe"); |
|
|
1759 | |
|
|
1760 | fd_intern (evpipe [0]); |
|
|
1761 | fd_intern (evpipe [1]); |
|
|
1762 | ev_io_set (&pipe_w, evpipe [0], EV_READ); |
|
|
1763 | } |
|
|
1764 | |
|
|
1765 | ev_io_start (EV_A_ &pipe_w); |
|
|
1766 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1767 | } |
|
|
1768 | } |
|
|
1769 | |
|
|
1770 | inline_speed void |
|
|
1771 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1772 | { |
|
|
1773 | if (expect_true (*flag)) |
|
|
1774 | return; |
|
|
1775 | |
|
|
1776 | *flag = 1; |
|
|
1777 | |
|
|
1778 | ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */ |
|
|
1779 | |
|
|
1780 | pipe_write_skipped = 1; |
|
|
1781 | |
|
|
1782 | ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */ |
|
|
1783 | |
|
|
1784 | if (pipe_write_wanted) |
|
|
1785 | { |
|
|
1786 | int old_errno; |
|
|
1787 | |
|
|
1788 | pipe_write_skipped = 0; /* just an optimisation, no fence needed */ |
|
|
1789 | |
|
|
1790 | old_errno = errno; /* save errno because write will clobber it */ |
|
|
1791 | |
|
|
1792 | #if EV_USE_EVENTFD |
|
|
1793 | if (evfd >= 0) |
|
|
1794 | { |
|
|
1795 | uint64_t counter = 1; |
|
|
1796 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1797 | } |
|
|
1798 | else |
|
|
1799 | #endif |
|
|
1800 | { |
|
|
1801 | /* win32 people keep sending patches that change this write() to send() */ |
|
|
1802 | /* and then run away. but send() is wrong, it wants a socket handle on win32 */ |
|
|
1803 | /* so when you think this write should be a send instead, please find out */ |
|
|
1804 | /* where your send() is from - it's definitely not the microsoft send, and */ |
|
|
1805 | /* tell me. thank you. */ |
|
|
1806 | write (evpipe [1], &(evpipe [1]), 1); |
|
|
1807 | } |
|
|
1808 | |
|
|
1809 | errno = old_errno; |
|
|
1810 | } |
|
|
1811 | } |
|
|
1812 | |
|
|
1813 | /* called whenever the libev signal pipe */ |
|
|
1814 | /* got some events (signal, async) */ |
382 | static void |
1815 | static void |
383 | upheap (WT *heap, int k) |
1816 | pipecb (EV_P_ ev_io *iow, int revents) |
384 | { |
1817 | { |
385 | WT w = heap [k]; |
1818 | int i; |
386 | |
1819 | |
387 | while (k && heap [k >> 1]->at > w->at) |
1820 | if (revents & EV_READ) |
388 | { |
|
|
389 | heap [k] = heap [k >> 1]; |
|
|
390 | heap [k]->active = k + 1; |
|
|
391 | k >>= 1; |
|
|
392 | } |
1821 | { |
|
|
1822 | #if EV_USE_EVENTFD |
|
|
1823 | if (evfd >= 0) |
|
|
1824 | { |
|
|
1825 | uint64_t counter; |
|
|
1826 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1827 | } |
|
|
1828 | else |
|
|
1829 | #endif |
|
|
1830 | { |
|
|
1831 | char dummy; |
|
|
1832 | /* see discussion in evpipe_write when you think this read should be recv in win32 */ |
|
|
1833 | read (evpipe [0], &dummy, 1); |
|
|
1834 | } |
|
|
1835 | } |
393 | |
1836 | |
394 | heap [k] = w; |
1837 | pipe_write_skipped = 0; |
395 | heap [k]->active = k + 1; |
|
|
396 | |
1838 | |
|
|
1839 | #if EV_SIGNAL_ENABLE |
|
|
1840 | if (sig_pending) |
|
|
1841 | { |
|
|
1842 | sig_pending = 0; |
|
|
1843 | |
|
|
1844 | for (i = EV_NSIG - 1; i--; ) |
|
|
1845 | if (expect_false (signals [i].pending)) |
|
|
1846 | ev_feed_signal_event (EV_A_ i + 1); |
|
|
1847 | } |
|
|
1848 | #endif |
|
|
1849 | |
|
|
1850 | #if EV_ASYNC_ENABLE |
|
|
1851 | if (async_pending) |
|
|
1852 | { |
|
|
1853 | async_pending = 0; |
|
|
1854 | |
|
|
1855 | for (i = asynccnt; i--; ) |
|
|
1856 | if (asyncs [i]->sent) |
|
|
1857 | { |
|
|
1858 | asyncs [i]->sent = 0; |
|
|
1859 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1860 | } |
|
|
1861 | } |
|
|
1862 | #endif |
|
|
1863 | } |
|
|
1864 | |
|
|
1865 | /*****************************************************************************/ |
|
|
1866 | |
|
|
1867 | void |
|
|
1868 | ev_feed_signal (int signum) |
|
|
1869 | { |
|
|
1870 | #if EV_MULTIPLICITY |
|
|
1871 | EV_P = signals [signum - 1].loop; |
|
|
1872 | |
|
|
1873 | if (!EV_A) |
|
|
1874 | return; |
|
|
1875 | #endif |
|
|
1876 | |
|
|
1877 | if (!ev_active (&pipe_w)) |
|
|
1878 | return; |
|
|
1879 | |
|
|
1880 | signals [signum - 1].pending = 1; |
|
|
1881 | evpipe_write (EV_A_ &sig_pending); |
397 | } |
1882 | } |
398 | |
1883 | |
399 | static void |
1884 | static void |
400 | downheap (WT *heap, int N, int k) |
1885 | ev_sighandler (int signum) |
401 | { |
1886 | { |
402 | WT w = heap [k]; |
1887 | #ifdef _WIN32 |
|
|
1888 | signal (signum, ev_sighandler); |
|
|
1889 | #endif |
403 | |
1890 | |
404 | while (k < (N >> 1)) |
1891 | ev_feed_signal (signum); |
405 | { |
1892 | } |
406 | int j = k << 1; |
|
|
407 | |
1893 | |
408 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
1894 | void noinline |
409 | ++j; |
1895 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1896 | { |
|
|
1897 | WL w; |
410 | |
1898 | |
411 | if (w->at <= heap [j]->at) |
1899 | if (expect_false (signum <= 0 || signum > EV_NSIG)) |
|
|
1900 | return; |
|
|
1901 | |
|
|
1902 | --signum; |
|
|
1903 | |
|
|
1904 | #if EV_MULTIPLICITY |
|
|
1905 | /* it is permissible to try to feed a signal to the wrong loop */ |
|
|
1906 | /* or, likely more useful, feeding a signal nobody is waiting for */ |
|
|
1907 | |
|
|
1908 | if (expect_false (signals [signum].loop != EV_A)) |
|
|
1909 | return; |
|
|
1910 | #endif |
|
|
1911 | |
|
|
1912 | signals [signum].pending = 0; |
|
|
1913 | |
|
|
1914 | for (w = signals [signum].head; w; w = w->next) |
|
|
1915 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1916 | } |
|
|
1917 | |
|
|
1918 | #if EV_USE_SIGNALFD |
|
|
1919 | static void |
|
|
1920 | sigfdcb (EV_P_ ev_io *iow, int revents) |
|
|
1921 | { |
|
|
1922 | struct signalfd_siginfo si[2], *sip; /* these structs are big */ |
|
|
1923 | |
|
|
1924 | for (;;) |
|
|
1925 | { |
|
|
1926 | ssize_t res = read (sigfd, si, sizeof (si)); |
|
|
1927 | |
|
|
1928 | /* not ISO-C, as res might be -1, but works with SuS */ |
|
|
1929 | for (sip = si; (char *)sip < (char *)si + res; ++sip) |
|
|
1930 | ev_feed_signal_event (EV_A_ sip->ssi_signo); |
|
|
1931 | |
|
|
1932 | if (res < (ssize_t)sizeof (si)) |
412 | break; |
1933 | break; |
413 | |
|
|
414 | heap [k] = heap [j]; |
|
|
415 | heap [k]->active = k + 1; |
|
|
416 | k = j; |
|
|
417 | } |
1934 | } |
418 | |
|
|
419 | heap [k] = w; |
|
|
420 | heap [k]->active = k + 1; |
|
|
421 | } |
1935 | } |
|
|
1936 | #endif |
|
|
1937 | |
|
|
1938 | #endif |
422 | |
1939 | |
423 | /*****************************************************************************/ |
1940 | /*****************************************************************************/ |
424 | |
1941 | |
425 | typedef struct |
1942 | #if EV_CHILD_ENABLE |
426 | { |
1943 | static WL childs [EV_PID_HASHSIZE]; |
427 | struct ev_watcher_list *head; |
|
|
428 | sig_atomic_t volatile gotsig; |
|
|
429 | } ANSIG; |
|
|
430 | |
1944 | |
431 | static ANSIG *signals; |
|
|
432 | static int signalmax; |
|
|
433 | |
|
|
434 | static int sigpipe [2]; |
|
|
435 | static sig_atomic_t volatile gotsig; |
|
|
436 | static struct ev_io sigev; |
|
|
437 | |
|
|
438 | static void |
|
|
439 | signals_init (ANSIG *base, int count) |
|
|
440 | { |
|
|
441 | while (count--) |
|
|
442 | { |
|
|
443 | base->head = 0; |
|
|
444 | base->gotsig = 0; |
|
|
445 | |
|
|
446 | ++base; |
|
|
447 | } |
|
|
448 | } |
|
|
449 | |
|
|
450 | static void |
|
|
451 | sighandler (int signum) |
|
|
452 | { |
|
|
453 | signals [signum - 1].gotsig = 1; |
|
|
454 | |
|
|
455 | if (!gotsig) |
|
|
456 | { |
|
|
457 | int old_errno = errno; |
|
|
458 | gotsig = 1; |
|
|
459 | write (sigpipe [1], &signum, 1); |
|
|
460 | errno = old_errno; |
|
|
461 | } |
|
|
462 | } |
|
|
463 | |
|
|
464 | static void |
|
|
465 | sigcb (EV_P_ struct ev_io *iow, int revents) |
|
|
466 | { |
|
|
467 | struct ev_watcher_list *w; |
|
|
468 | int signum; |
|
|
469 | |
|
|
470 | read (sigpipe [0], &revents, 1); |
|
|
471 | gotsig = 0; |
|
|
472 | |
|
|
473 | for (signum = signalmax; signum--; ) |
|
|
474 | if (signals [signum].gotsig) |
|
|
475 | { |
|
|
476 | signals [signum].gotsig = 0; |
|
|
477 | |
|
|
478 | for (w = signals [signum].head; w; w = w->next) |
|
|
479 | event (EV_A_ (W)w, EV_SIGNAL); |
|
|
480 | } |
|
|
481 | } |
|
|
482 | |
|
|
483 | static void |
|
|
484 | siginit (EV_P) |
|
|
485 | { |
|
|
486 | #ifndef WIN32 |
|
|
487 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
488 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
489 | |
|
|
490 | /* rather than sort out wether we really need nb, set it */ |
|
|
491 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
492 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
493 | #endif |
|
|
494 | |
|
|
495 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
496 | ev_io_start (EV_A_ &sigev); |
|
|
497 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
498 | } |
|
|
499 | |
|
|
500 | /*****************************************************************************/ |
|
|
501 | |
|
|
502 | #ifndef WIN32 |
|
|
503 | |
|
|
504 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
505 | static struct ev_signal childev; |
1945 | static ev_signal childev; |
|
|
1946 | |
|
|
1947 | #ifndef WIFCONTINUED |
|
|
1948 | # define WIFCONTINUED(status) 0 |
|
|
1949 | #endif |
|
|
1950 | |
|
|
1951 | /* handle a single child status event */ |
|
|
1952 | inline_speed void |
|
|
1953 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1954 | { |
|
|
1955 | ev_child *w; |
|
|
1956 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1957 | |
|
|
1958 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1959 | { |
|
|
1960 | if ((w->pid == pid || !w->pid) |
|
|
1961 | && (!traced || (w->flags & 1))) |
|
|
1962 | { |
|
|
1963 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1964 | w->rpid = pid; |
|
|
1965 | w->rstatus = status; |
|
|
1966 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1967 | } |
|
|
1968 | } |
|
|
1969 | } |
506 | |
1970 | |
507 | #ifndef WCONTINUED |
1971 | #ifndef WCONTINUED |
508 | # define WCONTINUED 0 |
1972 | # define WCONTINUED 0 |
509 | #endif |
1973 | #endif |
510 | |
1974 | |
|
|
1975 | /* called on sigchld etc., calls waitpid */ |
511 | static void |
1976 | static void |
512 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
|
|
513 | { |
|
|
514 | struct ev_child *w; |
|
|
515 | |
|
|
516 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
517 | if (w->pid == pid || !w->pid) |
|
|
518 | { |
|
|
519 | w->priority = sw->priority; /* need to do it *now* */ |
|
|
520 | w->rpid = pid; |
|
|
521 | w->rstatus = status; |
|
|
522 | event (EV_A_ (W)w, EV_CHILD); |
|
|
523 | } |
|
|
524 | } |
|
|
525 | |
|
|
526 | static void |
|
|
527 | childcb (EV_P_ struct ev_signal *sw, int revents) |
1977 | childcb (EV_P_ ev_signal *sw, int revents) |
528 | { |
1978 | { |
529 | int pid, status; |
1979 | int pid, status; |
530 | |
1980 | |
|
|
1981 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
531 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1982 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
532 | { |
1983 | if (!WCONTINUED |
|
|
1984 | || errno != EINVAL |
|
|
1985 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1986 | return; |
|
|
1987 | |
533 | /* make sure we are called again until all childs have been reaped */ |
1988 | /* make sure we are called again until all children have been reaped */ |
|
|
1989 | /* we need to do it this way so that the callback gets called before we continue */ |
534 | event (EV_A_ (W)sw, EV_SIGNAL); |
1990 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
535 | |
1991 | |
536 | child_reap (EV_A_ sw, pid, pid, status); |
1992 | child_reap (EV_A_ pid, pid, status); |
|
|
1993 | if ((EV_PID_HASHSIZE) > 1) |
537 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
1994 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
538 | } |
|
|
539 | } |
1995 | } |
540 | |
1996 | |
541 | #endif |
1997 | #endif |
542 | |
1998 | |
543 | /*****************************************************************************/ |
1999 | /*****************************************************************************/ |
544 | |
2000 | |
|
|
2001 | #if EV_USE_IOCP |
|
|
2002 | # include "ev_iocp.c" |
|
|
2003 | #endif |
|
|
2004 | #if EV_USE_PORT |
|
|
2005 | # include "ev_port.c" |
|
|
2006 | #endif |
545 | #if EV_USE_KQUEUE |
2007 | #if EV_USE_KQUEUE |
546 | # include "ev_kqueue.c" |
2008 | # include "ev_kqueue.c" |
547 | #endif |
2009 | #endif |
548 | #if EV_USE_EPOLL |
2010 | #if EV_USE_EPOLL |
549 | # include "ev_epoll.c" |
2011 | # include "ev_epoll.c" |
… | |
… | |
553 | #endif |
2015 | #endif |
554 | #if EV_USE_SELECT |
2016 | #if EV_USE_SELECT |
555 | # include "ev_select.c" |
2017 | # include "ev_select.c" |
556 | #endif |
2018 | #endif |
557 | |
2019 | |
558 | int |
2020 | int ecb_cold |
559 | ev_version_major (void) |
2021 | ev_version_major (void) |
560 | { |
2022 | { |
561 | return EV_VERSION_MAJOR; |
2023 | return EV_VERSION_MAJOR; |
562 | } |
2024 | } |
563 | |
2025 | |
564 | int |
2026 | int ecb_cold |
565 | ev_version_minor (void) |
2027 | ev_version_minor (void) |
566 | { |
2028 | { |
567 | return EV_VERSION_MINOR; |
2029 | return EV_VERSION_MINOR; |
568 | } |
2030 | } |
569 | |
2031 | |
570 | /* return true if we are running with elevated privileges and should ignore env variables */ |
2032 | /* return true if we are running with elevated privileges and should ignore env variables */ |
571 | static int |
2033 | int inline_size ecb_cold |
572 | enable_secure (void) |
2034 | enable_secure (void) |
573 | { |
2035 | { |
574 | #ifdef WIN32 |
2036 | #ifdef _WIN32 |
575 | return 0; |
2037 | return 0; |
576 | #else |
2038 | #else |
577 | return getuid () != geteuid () |
2039 | return getuid () != geteuid () |
578 | || getgid () != getegid (); |
2040 | || getgid () != getegid (); |
579 | #endif |
2041 | #endif |
580 | } |
2042 | } |
581 | |
2043 | |
|
|
2044 | unsigned int ecb_cold |
|
|
2045 | ev_supported_backends (void) |
|
|
2046 | { |
|
|
2047 | unsigned int flags = 0; |
|
|
2048 | |
|
|
2049 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
2050 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
2051 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
2052 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
2053 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
2054 | |
|
|
2055 | return flags; |
|
|
2056 | } |
|
|
2057 | |
|
|
2058 | unsigned int ecb_cold |
|
|
2059 | ev_recommended_backends (void) |
|
|
2060 | { |
|
|
2061 | unsigned int flags = ev_supported_backends (); |
|
|
2062 | |
|
|
2063 | #ifndef __NetBSD__ |
|
|
2064 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
2065 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
2066 | flags &= ~EVBACKEND_KQUEUE; |
|
|
2067 | #endif |
|
|
2068 | #ifdef __APPLE__ |
|
|
2069 | /* only select works correctly on that "unix-certified" platform */ |
|
|
2070 | flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */ |
|
|
2071 | flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */ |
|
|
2072 | #endif |
|
|
2073 | #ifdef __FreeBSD__ |
|
|
2074 | flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */ |
|
|
2075 | #endif |
|
|
2076 | |
|
|
2077 | return flags; |
|
|
2078 | } |
|
|
2079 | |
|
|
2080 | unsigned int ecb_cold |
|
|
2081 | ev_embeddable_backends (void) |
|
|
2082 | { |
|
|
2083 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
2084 | |
|
|
2085 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
2086 | if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */ |
|
|
2087 | flags &= ~EVBACKEND_EPOLL; |
|
|
2088 | |
|
|
2089 | return flags; |
|
|
2090 | } |
|
|
2091 | |
|
|
2092 | unsigned int |
|
|
2093 | ev_backend (EV_P) |
|
|
2094 | { |
|
|
2095 | return backend; |
|
|
2096 | } |
|
|
2097 | |
|
|
2098 | #if EV_FEATURE_API |
|
|
2099 | unsigned int |
|
|
2100 | ev_iteration (EV_P) |
|
|
2101 | { |
|
|
2102 | return loop_count; |
|
|
2103 | } |
|
|
2104 | |
|
|
2105 | unsigned int |
|
|
2106 | ev_depth (EV_P) |
|
|
2107 | { |
|
|
2108 | return loop_depth; |
|
|
2109 | } |
|
|
2110 | |
|
|
2111 | void |
|
|
2112 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
2113 | { |
|
|
2114 | io_blocktime = interval; |
|
|
2115 | } |
|
|
2116 | |
|
|
2117 | void |
|
|
2118 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
2119 | { |
|
|
2120 | timeout_blocktime = interval; |
|
|
2121 | } |
|
|
2122 | |
|
|
2123 | void |
|
|
2124 | ev_set_userdata (EV_P_ void *data) |
|
|
2125 | { |
|
|
2126 | userdata = data; |
|
|
2127 | } |
|
|
2128 | |
|
|
2129 | void * |
|
|
2130 | ev_userdata (EV_P) |
|
|
2131 | { |
|
|
2132 | return userdata; |
|
|
2133 | } |
|
|
2134 | |
|
|
2135 | void |
|
|
2136 | ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) |
|
|
2137 | { |
|
|
2138 | invoke_cb = invoke_pending_cb; |
|
|
2139 | } |
|
|
2140 | |
|
|
2141 | void |
|
|
2142 | ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P)) |
|
|
2143 | { |
|
|
2144 | release_cb = release; |
|
|
2145 | acquire_cb = acquire; |
|
|
2146 | } |
|
|
2147 | #endif |
|
|
2148 | |
|
|
2149 | /* initialise a loop structure, must be zero-initialised */ |
|
|
2150 | static void noinline ecb_cold |
|
|
2151 | loop_init (EV_P_ unsigned int flags) |
|
|
2152 | { |
|
|
2153 | if (!backend) |
|
|
2154 | { |
|
|
2155 | origflags = flags; |
|
|
2156 | |
|
|
2157 | #if EV_USE_REALTIME |
|
|
2158 | if (!have_realtime) |
|
|
2159 | { |
|
|
2160 | struct timespec ts; |
|
|
2161 | |
|
|
2162 | if (!clock_gettime (CLOCK_REALTIME, &ts)) |
|
|
2163 | have_realtime = 1; |
|
|
2164 | } |
|
|
2165 | #endif |
|
|
2166 | |
|
|
2167 | #if EV_USE_MONOTONIC |
|
|
2168 | if (!have_monotonic) |
|
|
2169 | { |
|
|
2170 | struct timespec ts; |
|
|
2171 | |
|
|
2172 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
2173 | have_monotonic = 1; |
|
|
2174 | } |
|
|
2175 | #endif |
|
|
2176 | |
|
|
2177 | /* pid check not overridable via env */ |
|
|
2178 | #ifndef _WIN32 |
|
|
2179 | if (flags & EVFLAG_FORKCHECK) |
|
|
2180 | curpid = getpid (); |
|
|
2181 | #endif |
|
|
2182 | |
|
|
2183 | if (!(flags & EVFLAG_NOENV) |
|
|
2184 | && !enable_secure () |
|
|
2185 | && getenv ("LIBEV_FLAGS")) |
|
|
2186 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
2187 | |
|
|
2188 | ev_rt_now = ev_time (); |
|
|
2189 | mn_now = get_clock (); |
|
|
2190 | now_floor = mn_now; |
|
|
2191 | rtmn_diff = ev_rt_now - mn_now; |
|
|
2192 | #if EV_FEATURE_API |
|
|
2193 | invoke_cb = ev_invoke_pending; |
|
|
2194 | #endif |
|
|
2195 | |
|
|
2196 | io_blocktime = 0.; |
|
|
2197 | timeout_blocktime = 0.; |
|
|
2198 | backend = 0; |
|
|
2199 | backend_fd = -1; |
|
|
2200 | sig_pending = 0; |
|
|
2201 | #if EV_ASYNC_ENABLE |
|
|
2202 | async_pending = 0; |
|
|
2203 | #endif |
|
|
2204 | pipe_write_skipped = 0; |
|
|
2205 | pipe_write_wanted = 0; |
|
|
2206 | #if EV_USE_INOTIFY |
|
|
2207 | fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2; |
|
|
2208 | #endif |
|
|
2209 | #if EV_USE_SIGNALFD |
|
|
2210 | sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1; |
|
|
2211 | #endif |
|
|
2212 | |
|
|
2213 | if (!(flags & EVBACKEND_MASK)) |
|
|
2214 | flags |= ev_recommended_backends (); |
|
|
2215 | |
|
|
2216 | #if EV_USE_IOCP |
|
|
2217 | if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags); |
|
|
2218 | #endif |
|
|
2219 | #if EV_USE_PORT |
|
|
2220 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
2221 | #endif |
|
|
2222 | #if EV_USE_KQUEUE |
|
|
2223 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
2224 | #endif |
|
|
2225 | #if EV_USE_EPOLL |
|
|
2226 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
2227 | #endif |
|
|
2228 | #if EV_USE_POLL |
|
|
2229 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
2230 | #endif |
|
|
2231 | #if EV_USE_SELECT |
|
|
2232 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
2233 | #endif |
|
|
2234 | |
|
|
2235 | ev_prepare_init (&pending_w, pendingcb); |
|
|
2236 | |
|
|
2237 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2238 | ev_init (&pipe_w, pipecb); |
|
|
2239 | ev_set_priority (&pipe_w, EV_MAXPRI); |
|
|
2240 | #endif |
|
|
2241 | } |
|
|
2242 | } |
|
|
2243 | |
|
|
2244 | /* free up a loop structure */ |
|
|
2245 | void ecb_cold |
|
|
2246 | ev_loop_destroy (EV_P) |
|
|
2247 | { |
|
|
2248 | int i; |
|
|
2249 | |
|
|
2250 | #if EV_MULTIPLICITY |
|
|
2251 | /* mimic free (0) */ |
|
|
2252 | if (!EV_A) |
|
|
2253 | return; |
|
|
2254 | #endif |
|
|
2255 | |
|
|
2256 | #if EV_CLEANUP_ENABLE |
|
|
2257 | /* queue cleanup watchers (and execute them) */ |
|
|
2258 | if (expect_false (cleanupcnt)) |
|
|
2259 | { |
|
|
2260 | queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP); |
|
|
2261 | EV_INVOKE_PENDING; |
|
|
2262 | } |
|
|
2263 | #endif |
|
|
2264 | |
|
|
2265 | #if EV_CHILD_ENABLE |
|
|
2266 | if (ev_is_active (&childev)) |
|
|
2267 | { |
|
|
2268 | ev_ref (EV_A); /* child watcher */ |
|
|
2269 | ev_signal_stop (EV_A_ &childev); |
|
|
2270 | } |
|
|
2271 | #endif |
|
|
2272 | |
|
|
2273 | if (ev_is_active (&pipe_w)) |
|
|
2274 | { |
|
|
2275 | /*ev_ref (EV_A);*/ |
|
|
2276 | /*ev_io_stop (EV_A_ &pipe_w);*/ |
|
|
2277 | |
|
|
2278 | #if EV_USE_EVENTFD |
|
|
2279 | if (evfd >= 0) |
|
|
2280 | close (evfd); |
|
|
2281 | #endif |
|
|
2282 | |
|
|
2283 | if (evpipe [0] >= 0) |
|
|
2284 | { |
|
|
2285 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2286 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2287 | } |
|
|
2288 | } |
|
|
2289 | |
|
|
2290 | #if EV_USE_SIGNALFD |
|
|
2291 | if (ev_is_active (&sigfd_w)) |
|
|
2292 | close (sigfd); |
|
|
2293 | #endif |
|
|
2294 | |
|
|
2295 | #if EV_USE_INOTIFY |
|
|
2296 | if (fs_fd >= 0) |
|
|
2297 | close (fs_fd); |
|
|
2298 | #endif |
|
|
2299 | |
|
|
2300 | if (backend_fd >= 0) |
|
|
2301 | close (backend_fd); |
|
|
2302 | |
|
|
2303 | #if EV_USE_IOCP |
|
|
2304 | if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A); |
|
|
2305 | #endif |
|
|
2306 | #if EV_USE_PORT |
|
|
2307 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
2308 | #endif |
|
|
2309 | #if EV_USE_KQUEUE |
|
|
2310 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
2311 | #endif |
|
|
2312 | #if EV_USE_EPOLL |
|
|
2313 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
2314 | #endif |
|
|
2315 | #if EV_USE_POLL |
|
|
2316 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
2317 | #endif |
|
|
2318 | #if EV_USE_SELECT |
|
|
2319 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
2320 | #endif |
|
|
2321 | |
|
|
2322 | for (i = NUMPRI; i--; ) |
|
|
2323 | { |
|
|
2324 | array_free (pending, [i]); |
|
|
2325 | #if EV_IDLE_ENABLE |
|
|
2326 | array_free (idle, [i]); |
|
|
2327 | #endif |
|
|
2328 | } |
|
|
2329 | |
|
|
2330 | ev_free (anfds); anfds = 0; anfdmax = 0; |
|
|
2331 | |
|
|
2332 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
2333 | array_free (rfeed, EMPTY); |
|
|
2334 | array_free (fdchange, EMPTY); |
|
|
2335 | array_free (timer, EMPTY); |
|
|
2336 | #if EV_PERIODIC_ENABLE |
|
|
2337 | array_free (periodic, EMPTY); |
|
|
2338 | #endif |
|
|
2339 | #if EV_FORK_ENABLE |
|
|
2340 | array_free (fork, EMPTY); |
|
|
2341 | #endif |
|
|
2342 | #if EV_CLEANUP_ENABLE |
|
|
2343 | array_free (cleanup, EMPTY); |
|
|
2344 | #endif |
|
|
2345 | array_free (prepare, EMPTY); |
|
|
2346 | array_free (check, EMPTY); |
|
|
2347 | #if EV_ASYNC_ENABLE |
|
|
2348 | array_free (async, EMPTY); |
|
|
2349 | #endif |
|
|
2350 | |
|
|
2351 | backend = 0; |
|
|
2352 | |
|
|
2353 | #if EV_MULTIPLICITY |
|
|
2354 | if (ev_is_default_loop (EV_A)) |
|
|
2355 | #endif |
|
|
2356 | ev_default_loop_ptr = 0; |
|
|
2357 | #if EV_MULTIPLICITY |
|
|
2358 | else |
|
|
2359 | ev_free (EV_A); |
|
|
2360 | #endif |
|
|
2361 | } |
|
|
2362 | |
|
|
2363 | #if EV_USE_INOTIFY |
|
|
2364 | inline_size void infy_fork (EV_P); |
|
|
2365 | #endif |
|
|
2366 | |
|
|
2367 | inline_size void |
|
|
2368 | loop_fork (EV_P) |
|
|
2369 | { |
|
|
2370 | #if EV_USE_PORT |
|
|
2371 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
2372 | #endif |
|
|
2373 | #if EV_USE_KQUEUE |
|
|
2374 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
2375 | #endif |
|
|
2376 | #if EV_USE_EPOLL |
|
|
2377 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
2378 | #endif |
|
|
2379 | #if EV_USE_INOTIFY |
|
|
2380 | infy_fork (EV_A); |
|
|
2381 | #endif |
|
|
2382 | |
|
|
2383 | if (ev_is_active (&pipe_w)) |
|
|
2384 | { |
|
|
2385 | /* pipe_write_wanted must be false now, so modifying fd vars should be safe */ |
|
|
2386 | |
|
|
2387 | ev_ref (EV_A); |
|
|
2388 | ev_io_stop (EV_A_ &pipe_w); |
|
|
2389 | |
|
|
2390 | #if EV_USE_EVENTFD |
|
|
2391 | if (evfd >= 0) |
|
|
2392 | close (evfd); |
|
|
2393 | #endif |
|
|
2394 | |
|
|
2395 | if (evpipe [0] >= 0) |
|
|
2396 | { |
|
|
2397 | EV_WIN32_CLOSE_FD (evpipe [0]); |
|
|
2398 | EV_WIN32_CLOSE_FD (evpipe [1]); |
|
|
2399 | } |
|
|
2400 | |
|
|
2401 | #if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE |
|
|
2402 | evpipe_init (EV_A); |
|
|
2403 | /* now iterate over everything, in case we missed something */ |
|
|
2404 | pipecb (EV_A_ &pipe_w, EV_READ); |
|
|
2405 | #endif |
|
|
2406 | } |
|
|
2407 | |
|
|
2408 | postfork = 0; |
|
|
2409 | } |
|
|
2410 | |
|
|
2411 | #if EV_MULTIPLICITY |
|
|
2412 | |
|
|
2413 | struct ev_loop * ecb_cold |
|
|
2414 | ev_loop_new (unsigned int flags) |
|
|
2415 | { |
|
|
2416 | EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
2417 | |
|
|
2418 | memset (EV_A, 0, sizeof (struct ev_loop)); |
|
|
2419 | loop_init (EV_A_ flags); |
|
|
2420 | |
|
|
2421 | if (ev_backend (EV_A)) |
|
|
2422 | return EV_A; |
|
|
2423 | |
|
|
2424 | ev_free (EV_A); |
|
|
2425 | return 0; |
|
|
2426 | } |
|
|
2427 | |
|
|
2428 | #endif /* multiplicity */ |
|
|
2429 | |
|
|
2430 | #if EV_VERIFY |
|
|
2431 | static void noinline ecb_cold |
|
|
2432 | verify_watcher (EV_P_ W w) |
|
|
2433 | { |
|
|
2434 | assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
2435 | |
|
|
2436 | if (w->pending) |
|
|
2437 | assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
2438 | } |
|
|
2439 | |
|
|
2440 | static void noinline ecb_cold |
|
|
2441 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
2442 | { |
|
|
2443 | int i; |
|
|
2444 | |
|
|
2445 | for (i = HEAP0; i < N + HEAP0; ++i) |
|
|
2446 | { |
|
|
2447 | assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
2448 | assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
2449 | assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
|
|
2450 | |
|
|
2451 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
|
|
2452 | } |
|
|
2453 | } |
|
|
2454 | |
|
|
2455 | static void noinline ecb_cold |
|
|
2456 | array_verify (EV_P_ W *ws, int cnt) |
|
|
2457 | { |
|
|
2458 | while (cnt--) |
|
|
2459 | { |
|
|
2460 | assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
2461 | verify_watcher (EV_A_ ws [cnt]); |
|
|
2462 | } |
|
|
2463 | } |
|
|
2464 | #endif |
|
|
2465 | |
|
|
2466 | #if EV_FEATURE_API |
|
|
2467 | void ecb_cold |
|
|
2468 | ev_verify (EV_P) |
|
|
2469 | { |
|
|
2470 | #if EV_VERIFY |
|
|
2471 | int i; |
|
|
2472 | WL w; |
|
|
2473 | |
|
|
2474 | assert (activecnt >= -1); |
|
|
2475 | |
|
|
2476 | assert (fdchangemax >= fdchangecnt); |
|
|
2477 | for (i = 0; i < fdchangecnt; ++i) |
|
|
2478 | assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
2479 | |
|
|
2480 | assert (anfdmax >= 0); |
|
|
2481 | for (i = 0; i < anfdmax; ++i) |
|
|
2482 | for (w = anfds [i].head; w; w = w->next) |
|
|
2483 | { |
|
|
2484 | verify_watcher (EV_A_ (W)w); |
|
|
2485 | assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1)); |
|
|
2486 | assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
|
|
2487 | } |
|
|
2488 | |
|
|
2489 | assert (timermax >= timercnt); |
|
|
2490 | verify_heap (EV_A_ timers, timercnt); |
|
|
2491 | |
|
|
2492 | #if EV_PERIODIC_ENABLE |
|
|
2493 | assert (periodicmax >= periodiccnt); |
|
|
2494 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
2495 | #endif |
|
|
2496 | |
|
|
2497 | for (i = NUMPRI; i--; ) |
|
|
2498 | { |
|
|
2499 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
2500 | #if EV_IDLE_ENABLE |
|
|
2501 | assert (idleall >= 0); |
|
|
2502 | assert (idlemax [i] >= idlecnt [i]); |
|
|
2503 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
2504 | #endif |
|
|
2505 | } |
|
|
2506 | |
|
|
2507 | #if EV_FORK_ENABLE |
|
|
2508 | assert (forkmax >= forkcnt); |
|
|
2509 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
2510 | #endif |
|
|
2511 | |
|
|
2512 | #if EV_CLEANUP_ENABLE |
|
|
2513 | assert (cleanupmax >= cleanupcnt); |
|
|
2514 | array_verify (EV_A_ (W *)cleanups, cleanupcnt); |
|
|
2515 | #endif |
|
|
2516 | |
|
|
2517 | #if EV_ASYNC_ENABLE |
|
|
2518 | assert (asyncmax >= asynccnt); |
|
|
2519 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
2520 | #endif |
|
|
2521 | |
|
|
2522 | #if EV_PREPARE_ENABLE |
|
|
2523 | assert (preparemax >= preparecnt); |
|
|
2524 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
2525 | #endif |
|
|
2526 | |
|
|
2527 | #if EV_CHECK_ENABLE |
|
|
2528 | assert (checkmax >= checkcnt); |
|
|
2529 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
2530 | #endif |
|
|
2531 | |
|
|
2532 | # if 0 |
|
|
2533 | #if EV_CHILD_ENABLE |
|
|
2534 | for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
2535 | for (signum = EV_NSIG; signum--; ) if (signals [signum].pending) |
|
|
2536 | #endif |
|
|
2537 | # endif |
|
|
2538 | #endif |
|
|
2539 | } |
|
|
2540 | #endif |
|
|
2541 | |
|
|
2542 | #if EV_MULTIPLICITY |
|
|
2543 | struct ev_loop * ecb_cold |
|
|
2544 | #else |
582 | int |
2545 | int |
583 | ev_method (EV_P) |
2546 | #endif |
|
|
2547 | ev_default_loop (unsigned int flags) |
584 | { |
2548 | { |
585 | return method; |
2549 | if (!ev_default_loop_ptr) |
586 | } |
|
|
587 | |
|
|
588 | static void |
|
|
589 | loop_init (EV_P_ int methods) |
|
|
590 | { |
|
|
591 | if (!method) |
|
|
592 | { |
|
|
593 | #if EV_USE_MONOTONIC |
|
|
594 | { |
2550 | { |
595 | struct timespec ts; |
|
|
596 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
597 | have_monotonic = 1; |
|
|
598 | } |
|
|
599 | #endif |
|
|
600 | |
|
|
601 | rt_now = ev_time (); |
|
|
602 | mn_now = get_clock (); |
|
|
603 | now_floor = mn_now; |
|
|
604 | rtmn_diff = rt_now - mn_now; |
|
|
605 | |
|
|
606 | if (methods == EVMETHOD_AUTO) |
|
|
607 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
608 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
609 | else |
|
|
610 | methods = EVMETHOD_ANY; |
|
|
611 | |
|
|
612 | method = 0; |
|
|
613 | #if EV_USE_KQUEUE |
|
|
614 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
615 | #endif |
|
|
616 | #if EV_USE_EPOLL |
|
|
617 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
618 | #endif |
|
|
619 | #if EV_USE_POLL |
|
|
620 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
621 | #endif |
|
|
622 | #if EV_USE_SELECT |
|
|
623 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
624 | #endif |
|
|
625 | } |
|
|
626 | } |
|
|
627 | |
|
|
628 | void |
|
|
629 | loop_destroy (EV_P) |
|
|
630 | { |
|
|
631 | #if EV_USE_KQUEUE |
|
|
632 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
633 | #endif |
|
|
634 | #if EV_USE_EPOLL |
|
|
635 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
636 | #endif |
|
|
637 | #if EV_USE_POLL |
|
|
638 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
639 | #endif |
|
|
640 | #if EV_USE_SELECT |
|
|
641 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
642 | #endif |
|
|
643 | |
|
|
644 | method = 0; |
|
|
645 | /*TODO*/ |
|
|
646 | } |
|
|
647 | |
|
|
648 | void |
|
|
649 | loop_fork (EV_P) |
|
|
650 | { |
|
|
651 | /*TODO*/ |
|
|
652 | #if EV_USE_EPOLL |
|
|
653 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
654 | #endif |
|
|
655 | #if EV_USE_KQUEUE |
|
|
656 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
657 | #endif |
|
|
658 | } |
|
|
659 | |
|
|
660 | #if EV_MULTIPLICITY |
2551 | #if EV_MULTIPLICITY |
661 | struct ev_loop * |
2552 | EV_P = ev_default_loop_ptr = &default_loop_struct; |
662 | ev_loop_new (int methods) |
|
|
663 | { |
|
|
664 | struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop)); |
|
|
665 | |
|
|
666 | loop_init (EV_A_ methods); |
|
|
667 | |
|
|
668 | if (ev_method (EV_A)) |
|
|
669 | return loop; |
|
|
670 | |
|
|
671 | return 0; |
|
|
672 | } |
|
|
673 | |
|
|
674 | void |
|
|
675 | ev_loop_destroy (EV_P) |
|
|
676 | { |
|
|
677 | loop_destroy (EV_A); |
|
|
678 | free (loop); |
|
|
679 | } |
|
|
680 | |
|
|
681 | void |
|
|
682 | ev_loop_fork (EV_P) |
|
|
683 | { |
|
|
684 | loop_fork (EV_A); |
|
|
685 | } |
|
|
686 | |
|
|
687 | #endif |
|
|
688 | |
|
|
689 | #if EV_MULTIPLICITY |
|
|
690 | struct ev_loop default_loop_struct; |
|
|
691 | static struct ev_loop *default_loop; |
|
|
692 | |
|
|
693 | struct ev_loop * |
|
|
694 | #else |
2553 | #else |
695 | static int default_loop; |
|
|
696 | |
|
|
697 | int |
|
|
698 | #endif |
|
|
699 | ev_default_loop (int methods) |
|
|
700 | { |
|
|
701 | if (sigpipe [0] == sigpipe [1]) |
|
|
702 | if (pipe (sigpipe)) |
|
|
703 | return 0; |
|
|
704 | |
|
|
705 | if (!default_loop) |
|
|
706 | { |
|
|
707 | #if EV_MULTIPLICITY |
|
|
708 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
709 | #else |
|
|
710 | default_loop = 1; |
2554 | ev_default_loop_ptr = 1; |
711 | #endif |
2555 | #endif |
712 | |
2556 | |
713 | loop_init (EV_A_ methods); |
2557 | loop_init (EV_A_ flags); |
714 | |
2558 | |
715 | if (ev_method (EV_A)) |
2559 | if (ev_backend (EV_A)) |
716 | { |
2560 | { |
717 | ev_watcher_init (&sigev, sigcb); |
2561 | #if EV_CHILD_ENABLE |
718 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
719 | siginit (EV_A); |
|
|
720 | |
|
|
721 | #ifndef WIN32 |
|
|
722 | ev_signal_init (&childev, childcb, SIGCHLD); |
2562 | ev_signal_init (&childev, childcb, SIGCHLD); |
723 | ev_set_priority (&childev, EV_MAXPRI); |
2563 | ev_set_priority (&childev, EV_MAXPRI); |
724 | ev_signal_start (EV_A_ &childev); |
2564 | ev_signal_start (EV_A_ &childev); |
725 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
2565 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
726 | #endif |
2566 | #endif |
727 | } |
2567 | } |
728 | else |
2568 | else |
729 | default_loop = 0; |
2569 | ev_default_loop_ptr = 0; |
730 | } |
2570 | } |
731 | |
2571 | |
732 | return default_loop; |
2572 | return ev_default_loop_ptr; |
733 | } |
2573 | } |
734 | |
2574 | |
735 | void |
2575 | void |
736 | ev_default_destroy (void) |
2576 | ev_loop_fork (EV_P) |
737 | { |
2577 | { |
738 | #if EV_MULTIPLICITY |
2578 | postfork = 1; /* must be in line with ev_default_fork */ |
739 | struct ev_loop *loop = default_loop; |
|
|
740 | #endif |
|
|
741 | |
|
|
742 | ev_ref (EV_A); /* child watcher */ |
|
|
743 | ev_signal_stop (EV_A_ &childev); |
|
|
744 | |
|
|
745 | ev_ref (EV_A); /* signal watcher */ |
|
|
746 | ev_io_stop (EV_A_ &sigev); |
|
|
747 | |
|
|
748 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
749 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
750 | |
|
|
751 | loop_destroy (EV_A); |
|
|
752 | } |
2579 | } |
|
|
2580 | |
|
|
2581 | /*****************************************************************************/ |
753 | |
2582 | |
754 | void |
2583 | void |
755 | ev_default_fork (void) |
2584 | ev_invoke (EV_P_ void *w, int revents) |
756 | { |
2585 | { |
757 | #if EV_MULTIPLICITY |
2586 | EV_CB_INVOKE ((W)w, revents); |
758 | struct ev_loop *loop = default_loop; |
|
|
759 | #endif |
|
|
760 | |
|
|
761 | loop_fork (EV_A); |
|
|
762 | |
|
|
763 | ev_io_stop (EV_A_ &sigev); |
|
|
764 | close (sigpipe [0]); |
|
|
765 | close (sigpipe [1]); |
|
|
766 | pipe (sigpipe); |
|
|
767 | |
|
|
768 | ev_ref (EV_A); /* signal watcher */ |
|
|
769 | siginit (EV_A); |
|
|
770 | } |
2587 | } |
771 | |
2588 | |
772 | /*****************************************************************************/ |
2589 | unsigned int |
|
|
2590 | ev_pending_count (EV_P) |
|
|
2591 | { |
|
|
2592 | int pri; |
|
|
2593 | unsigned int count = 0; |
773 | |
2594 | |
774 | static void |
2595 | for (pri = NUMPRI; pri--; ) |
775 | call_pending (EV_P) |
2596 | count += pendingcnt [pri]; |
|
|
2597 | |
|
|
2598 | return count; |
|
|
2599 | } |
|
|
2600 | |
|
|
2601 | void noinline |
|
|
2602 | ev_invoke_pending (EV_P) |
776 | { |
2603 | { |
777 | int pri; |
2604 | int pri; |
778 | |
2605 | |
779 | for (pri = NUMPRI; pri--; ) |
2606 | for (pri = NUMPRI; pri--; ) |
780 | while (pendingcnt [pri]) |
2607 | while (pendingcnt [pri]) |
781 | { |
2608 | { |
782 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
2609 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
783 | |
2610 | |
784 | if (p->w) |
|
|
785 | { |
|
|
786 | p->w->pending = 0; |
2611 | p->w->pending = 0; |
787 | p->w->cb (EV_A_ p->w, p->events); |
2612 | EV_CB_INVOKE (p->w, p->events); |
788 | } |
2613 | EV_FREQUENT_CHECK; |
789 | } |
2614 | } |
790 | } |
2615 | } |
791 | |
2616 | |
792 | static void |
2617 | #if EV_IDLE_ENABLE |
|
|
2618 | /* make idle watchers pending. this handles the "call-idle */ |
|
|
2619 | /* only when higher priorities are idle" logic */ |
|
|
2620 | inline_size void |
793 | timers_reify (EV_P) |
2621 | idle_reify (EV_P) |
794 | { |
2622 | { |
795 | while (timercnt && timers [0]->at <= mn_now) |
2623 | if (expect_false (idleall)) |
796 | { |
2624 | { |
797 | struct ev_timer *w = timers [0]; |
2625 | int pri; |
798 | |
2626 | |
799 | /* first reschedule or stop timer */ |
2627 | for (pri = NUMPRI; pri--; ) |
800 | if (w->repeat) |
|
|
801 | { |
2628 | { |
802 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
2629 | if (pendingcnt [pri]) |
803 | w->at = mn_now + w->repeat; |
2630 | break; |
804 | downheap ((WT *)timers, timercnt, 0); |
|
|
805 | } |
|
|
806 | else |
|
|
807 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
808 | |
2631 | |
809 | event (EV_A_ (W)w, EV_TIMEOUT); |
2632 | if (idlecnt [pri]) |
810 | } |
|
|
811 | } |
|
|
812 | |
|
|
813 | static void |
|
|
814 | periodics_reify (EV_P) |
|
|
815 | { |
|
|
816 | while (periodiccnt && periodics [0]->at <= rt_now) |
|
|
817 | { |
|
|
818 | struct ev_periodic *w = periodics [0]; |
|
|
819 | |
|
|
820 | /* first reschedule or stop timer */ |
|
|
821 | if (w->interval) |
|
|
822 | { |
|
|
823 | w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval; |
|
|
824 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now)); |
|
|
825 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
826 | } |
|
|
827 | else |
|
|
828 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
829 | |
|
|
830 | event (EV_A_ (W)w, EV_PERIODIC); |
|
|
831 | } |
|
|
832 | } |
|
|
833 | |
|
|
834 | static void |
|
|
835 | periodics_reschedule (EV_P) |
|
|
836 | { |
|
|
837 | int i; |
|
|
838 | |
|
|
839 | /* adjust periodics after time jump */ |
|
|
840 | for (i = 0; i < periodiccnt; ++i) |
|
|
841 | { |
|
|
842 | struct ev_periodic *w = periodics [i]; |
|
|
843 | |
|
|
844 | if (w->interval) |
|
|
845 | { |
|
|
846 | ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval; |
|
|
847 | |
|
|
848 | if (fabs (diff) >= 1e-4) |
|
|
849 | { |
2633 | { |
850 | ev_periodic_stop (EV_A_ w); |
2634 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
851 | ev_periodic_start (EV_A_ w); |
2635 | break; |
852 | |
|
|
853 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
854 | } |
2636 | } |
855 | } |
2637 | } |
856 | } |
2638 | } |
857 | } |
2639 | } |
|
|
2640 | #endif |
858 | |
2641 | |
859 | inline int |
2642 | /* make timers pending */ |
860 | time_update_monotonic (EV_P) |
2643 | inline_size void |
|
|
2644 | timers_reify (EV_P) |
861 | { |
2645 | { |
862 | mn_now = get_clock (); |
2646 | EV_FREQUENT_CHECK; |
863 | |
2647 | |
864 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
2648 | if (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
865 | { |
|
|
866 | rt_now = rtmn_diff + mn_now; |
|
|
867 | return 0; |
|
|
868 | } |
2649 | { |
869 | else |
2650 | do |
|
|
2651 | { |
|
|
2652 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
|
|
2653 | |
|
|
2654 | /*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
2655 | |
|
|
2656 | /* first reschedule or stop timer */ |
|
|
2657 | if (w->repeat) |
|
|
2658 | { |
|
|
2659 | ev_at (w) += w->repeat; |
|
|
2660 | if (ev_at (w) < mn_now) |
|
|
2661 | ev_at (w) = mn_now; |
|
|
2662 | |
|
|
2663 | assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
2664 | |
|
|
2665 | ANHE_at_cache (timers [HEAP0]); |
|
|
2666 | downheap (timers, timercnt, HEAP0); |
|
|
2667 | } |
|
|
2668 | else |
|
|
2669 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2670 | |
|
|
2671 | EV_FREQUENT_CHECK; |
|
|
2672 | feed_reverse (EV_A_ (W)w); |
|
|
2673 | } |
|
|
2674 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now); |
|
|
2675 | |
|
|
2676 | feed_reverse_done (EV_A_ EV_TIMER); |
870 | { |
2677 | } |
871 | now_floor = mn_now; |
2678 | } |
872 | rt_now = ev_time (); |
2679 | |
873 | return 1; |
2680 | #if EV_PERIODIC_ENABLE |
|
|
2681 | |
|
|
2682 | static void noinline |
|
|
2683 | periodic_recalc (EV_P_ ev_periodic *w) |
|
|
2684 | { |
|
|
2685 | ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL; |
|
|
2686 | ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval); |
|
|
2687 | |
|
|
2688 | /* the above almost always errs on the low side */ |
|
|
2689 | while (at <= ev_rt_now) |
874 | } |
2690 | { |
875 | } |
2691 | ev_tstamp nat = at + w->interval; |
876 | |
2692 | |
877 | static void |
2693 | /* when resolution fails us, we use ev_rt_now */ |
878 | time_update (EV_P) |
2694 | if (expect_false (nat == at)) |
|
|
2695 | { |
|
|
2696 | at = ev_rt_now; |
|
|
2697 | break; |
|
|
2698 | } |
|
|
2699 | |
|
|
2700 | at = nat; |
|
|
2701 | } |
|
|
2702 | |
|
|
2703 | ev_at (w) = at; |
|
|
2704 | } |
|
|
2705 | |
|
|
2706 | /* make periodics pending */ |
|
|
2707 | inline_size void |
|
|
2708 | periodics_reify (EV_P) |
|
|
2709 | { |
|
|
2710 | EV_FREQUENT_CHECK; |
|
|
2711 | |
|
|
2712 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
2713 | { |
|
|
2714 | int feed_count = 0; |
|
|
2715 | |
|
|
2716 | do |
|
|
2717 | { |
|
|
2718 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
2719 | |
|
|
2720 | /*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
2721 | |
|
|
2722 | /* first reschedule or stop timer */ |
|
|
2723 | if (w->reschedule_cb) |
|
|
2724 | { |
|
|
2725 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2726 | |
|
|
2727 | assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
2728 | |
|
|
2729 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2730 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2731 | } |
|
|
2732 | else if (w->interval) |
|
|
2733 | { |
|
|
2734 | periodic_recalc (EV_A_ w); |
|
|
2735 | ANHE_at_cache (periodics [HEAP0]); |
|
|
2736 | downheap (periodics, periodiccnt, HEAP0); |
|
|
2737 | } |
|
|
2738 | else |
|
|
2739 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
2740 | |
|
|
2741 | EV_FREQUENT_CHECK; |
|
|
2742 | feed_reverse (EV_A_ (W)w); |
|
|
2743 | } |
|
|
2744 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now); |
|
|
2745 | |
|
|
2746 | feed_reverse_done (EV_A_ EV_PERIODIC); |
|
|
2747 | } |
|
|
2748 | } |
|
|
2749 | |
|
|
2750 | /* simply recalculate all periodics */ |
|
|
2751 | /* TODO: maybe ensure that at least one event happens when jumping forward? */ |
|
|
2752 | static void noinline ecb_cold |
|
|
2753 | periodics_reschedule (EV_P) |
879 | { |
2754 | { |
880 | int i; |
2755 | int i; |
881 | |
2756 | |
|
|
2757 | /* adjust periodics after time jump */ |
|
|
2758 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
2759 | { |
|
|
2760 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
2761 | |
|
|
2762 | if (w->reschedule_cb) |
|
|
2763 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2764 | else if (w->interval) |
|
|
2765 | periodic_recalc (EV_A_ w); |
|
|
2766 | |
|
|
2767 | ANHE_at_cache (periodics [i]); |
|
|
2768 | } |
|
|
2769 | |
|
|
2770 | reheap (periodics, periodiccnt); |
|
|
2771 | } |
|
|
2772 | #endif |
|
|
2773 | |
|
|
2774 | /* adjust all timers by a given offset */ |
|
|
2775 | static void noinline ecb_cold |
|
|
2776 | timers_reschedule (EV_P_ ev_tstamp adjust) |
|
|
2777 | { |
|
|
2778 | int i; |
|
|
2779 | |
|
|
2780 | for (i = 0; i < timercnt; ++i) |
|
|
2781 | { |
|
|
2782 | ANHE *he = timers + i + HEAP0; |
|
|
2783 | ANHE_w (*he)->at += adjust; |
|
|
2784 | ANHE_at_cache (*he); |
|
|
2785 | } |
|
|
2786 | } |
|
|
2787 | |
|
|
2788 | /* fetch new monotonic and realtime times from the kernel */ |
|
|
2789 | /* also detect if there was a timejump, and act accordingly */ |
|
|
2790 | inline_speed void |
|
|
2791 | time_update (EV_P_ ev_tstamp max_block) |
|
|
2792 | { |
882 | #if EV_USE_MONOTONIC |
2793 | #if EV_USE_MONOTONIC |
883 | if (expect_true (have_monotonic)) |
2794 | if (expect_true (have_monotonic)) |
884 | { |
2795 | { |
885 | if (time_update_monotonic (EV_A)) |
2796 | int i; |
|
|
2797 | ev_tstamp odiff = rtmn_diff; |
|
|
2798 | |
|
|
2799 | mn_now = get_clock (); |
|
|
2800 | |
|
|
2801 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
2802 | /* interpolate in the meantime */ |
|
|
2803 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
886 | { |
2804 | { |
887 | ev_tstamp odiff = rtmn_diff; |
2805 | ev_rt_now = rtmn_diff + mn_now; |
|
|
2806 | return; |
|
|
2807 | } |
888 | |
2808 | |
|
|
2809 | now_floor = mn_now; |
|
|
2810 | ev_rt_now = ev_time (); |
|
|
2811 | |
889 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
2812 | /* loop a few times, before making important decisions. |
|
|
2813 | * on the choice of "4": one iteration isn't enough, |
|
|
2814 | * in case we get preempted during the calls to |
|
|
2815 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
2816 | * to succeed in that case, though. and looping a few more times |
|
|
2817 | * doesn't hurt either as we only do this on time-jumps or |
|
|
2818 | * in the unlikely event of having been preempted here. |
|
|
2819 | */ |
|
|
2820 | for (i = 4; --i; ) |
890 | { |
2821 | { |
|
|
2822 | ev_tstamp diff; |
891 | rtmn_diff = rt_now - mn_now; |
2823 | rtmn_diff = ev_rt_now - mn_now; |
892 | |
2824 | |
893 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
2825 | diff = odiff - rtmn_diff; |
|
|
2826 | |
|
|
2827 | if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP)) |
894 | return; /* all is well */ |
2828 | return; /* all is well */ |
895 | |
2829 | |
896 | rt_now = ev_time (); |
2830 | ev_rt_now = ev_time (); |
897 | mn_now = get_clock (); |
2831 | mn_now = get_clock (); |
898 | now_floor = mn_now; |
2832 | now_floor = mn_now; |
899 | } |
2833 | } |
900 | |
2834 | |
|
|
2835 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
2836 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
2837 | # if EV_PERIODIC_ENABLE |
|
|
2838 | periodics_reschedule (EV_A); |
|
|
2839 | # endif |
|
|
2840 | } |
|
|
2841 | else |
|
|
2842 | #endif |
|
|
2843 | { |
|
|
2844 | ev_rt_now = ev_time (); |
|
|
2845 | |
|
|
2846 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
2847 | { |
|
|
2848 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
2849 | timers_reschedule (EV_A_ ev_rt_now - mn_now); |
|
|
2850 | #if EV_PERIODIC_ENABLE |
901 | periodics_reschedule (EV_A); |
2851 | periodics_reschedule (EV_A); |
902 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
2852 | #endif |
903 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
904 | } |
2853 | } |
905 | } |
|
|
906 | else |
|
|
907 | #endif |
|
|
908 | { |
|
|
909 | rt_now = ev_time (); |
|
|
910 | |
2854 | |
911 | if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
912 | { |
|
|
913 | periodics_reschedule (EV_A); |
|
|
914 | |
|
|
915 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
916 | for (i = 0; i < timercnt; ++i) |
|
|
917 | timers [i]->at += rt_now - mn_now; |
|
|
918 | } |
|
|
919 | |
|
|
920 | mn_now = rt_now; |
2855 | mn_now = ev_rt_now; |
921 | } |
2856 | } |
922 | } |
2857 | } |
923 | |
2858 | |
924 | void |
2859 | void |
925 | ev_ref (EV_P) |
|
|
926 | { |
|
|
927 | ++activecnt; |
|
|
928 | } |
|
|
929 | |
|
|
930 | void |
|
|
931 | ev_unref (EV_P) |
|
|
932 | { |
|
|
933 | --activecnt; |
|
|
934 | } |
|
|
935 | |
|
|
936 | static int loop_done; |
|
|
937 | |
|
|
938 | void |
|
|
939 | ev_loop (EV_P_ int flags) |
2860 | ev_run (EV_P_ int flags) |
940 | { |
2861 | { |
941 | double block; |
2862 | #if EV_FEATURE_API |
942 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
2863 | ++loop_depth; |
|
|
2864 | #endif |
|
|
2865 | |
|
|
2866 | assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE)); |
|
|
2867 | |
|
|
2868 | loop_done = EVBREAK_CANCEL; |
|
|
2869 | |
|
|
2870 | EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */ |
943 | |
2871 | |
944 | do |
2872 | do |
945 | { |
2873 | { |
|
|
2874 | #if EV_VERIFY >= 2 |
|
|
2875 | ev_verify (EV_A); |
|
|
2876 | #endif |
|
|
2877 | |
|
|
2878 | #ifndef _WIN32 |
|
|
2879 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
2880 | if (expect_false (getpid () != curpid)) |
|
|
2881 | { |
|
|
2882 | curpid = getpid (); |
|
|
2883 | postfork = 1; |
|
|
2884 | } |
|
|
2885 | #endif |
|
|
2886 | |
|
|
2887 | #if EV_FORK_ENABLE |
|
|
2888 | /* we might have forked, so queue fork handlers */ |
|
|
2889 | if (expect_false (postfork)) |
|
|
2890 | if (forkcnt) |
|
|
2891 | { |
|
|
2892 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
2893 | EV_INVOKE_PENDING; |
|
|
2894 | } |
|
|
2895 | #endif |
|
|
2896 | |
|
|
2897 | #if EV_PREPARE_ENABLE |
946 | /* queue check watchers (and execute them) */ |
2898 | /* queue prepare watchers (and execute them) */ |
947 | if (expect_false (preparecnt)) |
2899 | if (expect_false (preparecnt)) |
948 | { |
2900 | { |
949 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
2901 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
950 | call_pending (EV_A); |
2902 | EV_INVOKE_PENDING; |
951 | } |
2903 | } |
|
|
2904 | #endif |
|
|
2905 | |
|
|
2906 | if (expect_false (loop_done)) |
|
|
2907 | break; |
|
|
2908 | |
|
|
2909 | /* we might have forked, so reify kernel state if necessary */ |
|
|
2910 | if (expect_false (postfork)) |
|
|
2911 | loop_fork (EV_A); |
952 | |
2912 | |
953 | /* update fd-related kernel structures */ |
2913 | /* update fd-related kernel structures */ |
954 | fd_reify (EV_A); |
2914 | fd_reify (EV_A); |
955 | |
2915 | |
956 | /* calculate blocking time */ |
2916 | /* calculate blocking time */ |
|
|
2917 | { |
|
|
2918 | ev_tstamp waittime = 0.; |
|
|
2919 | ev_tstamp sleeptime = 0.; |
957 | |
2920 | |
958 | /* we only need this for !monotonic clockor timers, but as we basically |
2921 | /* remember old timestamp for io_blocktime calculation */ |
959 | always have timers, we just calculate it always */ |
2922 | ev_tstamp prev_mn_now = mn_now; |
960 | #if EV_USE_MONOTONIC |
2923 | |
961 | if (expect_true (have_monotonic)) |
2924 | /* update time to cancel out callback processing overhead */ |
962 | time_update_monotonic (EV_A); |
2925 | time_update (EV_A_ 1e100); |
963 | else |
2926 | |
964 | #endif |
2927 | /* from now on, we want a pipe-wake-up */ |
|
|
2928 | pipe_write_wanted = 1; |
|
|
2929 | |
|
|
2930 | ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */ |
|
|
2931 | |
|
|
2932 | if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped))) |
965 | { |
2933 | { |
966 | rt_now = ev_time (); |
|
|
967 | mn_now = rt_now; |
|
|
968 | } |
|
|
969 | |
|
|
970 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
971 | block = 0.; |
|
|
972 | else |
|
|
973 | { |
|
|
974 | block = MAX_BLOCKTIME; |
2934 | waittime = MAX_BLOCKTIME; |
975 | |
2935 | |
976 | if (timercnt) |
2936 | if (timercnt) |
977 | { |
2937 | { |
978 | ev_tstamp to = timers [0]->at - mn_now + method_fudge; |
2938 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now; |
979 | if (block > to) block = to; |
2939 | if (waittime > to) waittime = to; |
980 | } |
2940 | } |
981 | |
2941 | |
|
|
2942 | #if EV_PERIODIC_ENABLE |
982 | if (periodiccnt) |
2943 | if (periodiccnt) |
983 | { |
2944 | { |
984 | ev_tstamp to = periodics [0]->at - rt_now + method_fudge; |
2945 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now; |
985 | if (block > to) block = to; |
2946 | if (waittime > to) waittime = to; |
986 | } |
2947 | } |
|
|
2948 | #endif |
987 | |
2949 | |
988 | if (block < 0.) block = 0.; |
2950 | /* don't let timeouts decrease the waittime below timeout_blocktime */ |
|
|
2951 | if (expect_false (waittime < timeout_blocktime)) |
|
|
2952 | waittime = timeout_blocktime; |
|
|
2953 | |
|
|
2954 | /* at this point, we NEED to wait, so we have to ensure */ |
|
|
2955 | /* to pass a minimum nonzero value to the backend */ |
|
|
2956 | if (expect_false (waittime < backend_mintime)) |
|
|
2957 | waittime = backend_mintime; |
|
|
2958 | |
|
|
2959 | /* extra check because io_blocktime is commonly 0 */ |
|
|
2960 | if (expect_false (io_blocktime)) |
|
|
2961 | { |
|
|
2962 | sleeptime = io_blocktime - (mn_now - prev_mn_now); |
|
|
2963 | |
|
|
2964 | if (sleeptime > waittime - backend_mintime) |
|
|
2965 | sleeptime = waittime - backend_mintime; |
|
|
2966 | |
|
|
2967 | if (expect_true (sleeptime > 0.)) |
|
|
2968 | { |
|
|
2969 | ev_sleep (sleeptime); |
|
|
2970 | waittime -= sleeptime; |
|
|
2971 | } |
|
|
2972 | } |
989 | } |
2973 | } |
990 | |
2974 | |
991 | method_poll (EV_A_ block); |
2975 | #if EV_FEATURE_API |
|
|
2976 | ++loop_count; |
|
|
2977 | #endif |
|
|
2978 | assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */ |
|
|
2979 | backend_poll (EV_A_ waittime); |
|
|
2980 | assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */ |
992 | |
2981 | |
|
|
2982 | pipe_write_wanted = 0; /* just an optimsiation, no fence needed */ |
|
|
2983 | |
|
|
2984 | if (pipe_write_skipped) |
|
|
2985 | { |
|
|
2986 | assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w))); |
|
|
2987 | ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM); |
|
|
2988 | } |
|
|
2989 | |
|
|
2990 | |
993 | /* update rt_now, do magic */ |
2991 | /* update ev_rt_now, do magic */ |
994 | time_update (EV_A); |
2992 | time_update (EV_A_ waittime + sleeptime); |
|
|
2993 | } |
995 | |
2994 | |
996 | /* queue pending timers and reschedule them */ |
2995 | /* queue pending timers and reschedule them */ |
997 | timers_reify (EV_A); /* relative timers called last */ |
2996 | timers_reify (EV_A); /* relative timers called last */ |
|
|
2997 | #if EV_PERIODIC_ENABLE |
998 | periodics_reify (EV_A); /* absolute timers called first */ |
2998 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
2999 | #endif |
999 | |
3000 | |
|
|
3001 | #if EV_IDLE_ENABLE |
1000 | /* queue idle watchers unless io or timers are pending */ |
3002 | /* queue idle watchers unless other events are pending */ |
1001 | if (!pendingcnt) |
3003 | idle_reify (EV_A); |
1002 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
3004 | #endif |
1003 | |
3005 | |
|
|
3006 | #if EV_CHECK_ENABLE |
1004 | /* queue check watchers, to be executed first */ |
3007 | /* queue check watchers, to be executed first */ |
1005 | if (checkcnt) |
3008 | if (expect_false (checkcnt)) |
1006 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
3009 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
3010 | #endif |
1007 | |
3011 | |
1008 | call_pending (EV_A); |
3012 | EV_INVOKE_PENDING; |
1009 | } |
3013 | } |
1010 | while (activecnt && !loop_done); |
3014 | while (expect_true ( |
|
|
3015 | activecnt |
|
|
3016 | && !loop_done |
|
|
3017 | && !(flags & (EVRUN_ONCE | EVRUN_NOWAIT)) |
|
|
3018 | )); |
1011 | |
3019 | |
1012 | if (loop_done != 2) |
3020 | if (loop_done == EVBREAK_ONE) |
1013 | loop_done = 0; |
3021 | loop_done = EVBREAK_CANCEL; |
|
|
3022 | |
|
|
3023 | #if EV_FEATURE_API |
|
|
3024 | --loop_depth; |
|
|
3025 | #endif |
1014 | } |
3026 | } |
1015 | |
3027 | |
1016 | void |
3028 | void |
1017 | ev_unloop (EV_P_ int how) |
3029 | ev_break (EV_P_ int how) |
1018 | { |
3030 | { |
1019 | loop_done = how; |
3031 | loop_done = how; |
1020 | } |
3032 | } |
1021 | |
3033 | |
|
|
3034 | void |
|
|
3035 | ev_ref (EV_P) |
|
|
3036 | { |
|
|
3037 | ++activecnt; |
|
|
3038 | } |
|
|
3039 | |
|
|
3040 | void |
|
|
3041 | ev_unref (EV_P) |
|
|
3042 | { |
|
|
3043 | --activecnt; |
|
|
3044 | } |
|
|
3045 | |
|
|
3046 | void |
|
|
3047 | ev_now_update (EV_P) |
|
|
3048 | { |
|
|
3049 | time_update (EV_A_ 1e100); |
|
|
3050 | } |
|
|
3051 | |
|
|
3052 | void |
|
|
3053 | ev_suspend (EV_P) |
|
|
3054 | { |
|
|
3055 | ev_now_update (EV_A); |
|
|
3056 | } |
|
|
3057 | |
|
|
3058 | void |
|
|
3059 | ev_resume (EV_P) |
|
|
3060 | { |
|
|
3061 | ev_tstamp mn_prev = mn_now; |
|
|
3062 | |
|
|
3063 | ev_now_update (EV_A); |
|
|
3064 | timers_reschedule (EV_A_ mn_now - mn_prev); |
|
|
3065 | #if EV_PERIODIC_ENABLE |
|
|
3066 | /* TODO: really do this? */ |
|
|
3067 | periodics_reschedule (EV_A); |
|
|
3068 | #endif |
|
|
3069 | } |
|
|
3070 | |
1022 | /*****************************************************************************/ |
3071 | /*****************************************************************************/ |
|
|
3072 | /* singly-linked list management, used when the expected list length is short */ |
1023 | |
3073 | |
1024 | inline void |
3074 | inline_size void |
1025 | wlist_add (WL *head, WL elem) |
3075 | wlist_add (WL *head, WL elem) |
1026 | { |
3076 | { |
1027 | elem->next = *head; |
3077 | elem->next = *head; |
1028 | *head = elem; |
3078 | *head = elem; |
1029 | } |
3079 | } |
1030 | |
3080 | |
1031 | inline void |
3081 | inline_size void |
1032 | wlist_del (WL *head, WL elem) |
3082 | wlist_del (WL *head, WL elem) |
1033 | { |
3083 | { |
1034 | while (*head) |
3084 | while (*head) |
1035 | { |
3085 | { |
1036 | if (*head == elem) |
3086 | if (expect_true (*head == elem)) |
1037 | { |
3087 | { |
1038 | *head = elem->next; |
3088 | *head = elem->next; |
1039 | return; |
3089 | break; |
1040 | } |
3090 | } |
1041 | |
3091 | |
1042 | head = &(*head)->next; |
3092 | head = &(*head)->next; |
1043 | } |
3093 | } |
1044 | } |
3094 | } |
1045 | |
3095 | |
|
|
3096 | /* internal, faster, version of ev_clear_pending */ |
1046 | inline void |
3097 | inline_speed void |
1047 | ev_clear_pending (EV_P_ W w) |
3098 | clear_pending (EV_P_ W w) |
1048 | { |
3099 | { |
1049 | if (w->pending) |
3100 | if (w->pending) |
1050 | { |
3101 | { |
1051 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
3102 | pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w; |
1052 | w->pending = 0; |
3103 | w->pending = 0; |
1053 | } |
3104 | } |
1054 | } |
3105 | } |
1055 | |
3106 | |
|
|
3107 | int |
|
|
3108 | ev_clear_pending (EV_P_ void *w) |
|
|
3109 | { |
|
|
3110 | W w_ = (W)w; |
|
|
3111 | int pending = w_->pending; |
|
|
3112 | |
|
|
3113 | if (expect_true (pending)) |
|
|
3114 | { |
|
|
3115 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
3116 | p->w = (W)&pending_w; |
|
|
3117 | w_->pending = 0; |
|
|
3118 | return p->events; |
|
|
3119 | } |
|
|
3120 | else |
|
|
3121 | return 0; |
|
|
3122 | } |
|
|
3123 | |
1056 | inline void |
3124 | inline_size void |
|
|
3125 | pri_adjust (EV_P_ W w) |
|
|
3126 | { |
|
|
3127 | int pri = ev_priority (w); |
|
|
3128 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
3129 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
3130 | ev_set_priority (w, pri); |
|
|
3131 | } |
|
|
3132 | |
|
|
3133 | inline_speed void |
1057 | ev_start (EV_P_ W w, int active) |
3134 | ev_start (EV_P_ W w, int active) |
1058 | { |
3135 | { |
1059 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
3136 | pri_adjust (EV_A_ w); |
1060 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1061 | |
|
|
1062 | w->active = active; |
3137 | w->active = active; |
1063 | ev_ref (EV_A); |
3138 | ev_ref (EV_A); |
1064 | } |
3139 | } |
1065 | |
3140 | |
1066 | inline void |
3141 | inline_size void |
1067 | ev_stop (EV_P_ W w) |
3142 | ev_stop (EV_P_ W w) |
1068 | { |
3143 | { |
1069 | ev_unref (EV_A); |
3144 | ev_unref (EV_A); |
1070 | w->active = 0; |
3145 | w->active = 0; |
1071 | } |
3146 | } |
1072 | |
3147 | |
1073 | /*****************************************************************************/ |
3148 | /*****************************************************************************/ |
1074 | |
3149 | |
1075 | void |
3150 | void noinline |
1076 | ev_io_start (EV_P_ struct ev_io *w) |
3151 | ev_io_start (EV_P_ ev_io *w) |
1077 | { |
3152 | { |
1078 | int fd = w->fd; |
3153 | int fd = w->fd; |
1079 | |
3154 | |
1080 | if (ev_is_active (w)) |
3155 | if (expect_false (ev_is_active (w))) |
1081 | return; |
3156 | return; |
1082 | |
3157 | |
1083 | assert (("ev_io_start called with negative fd", fd >= 0)); |
3158 | assert (("libev: ev_io_start called with negative fd", fd >= 0)); |
|
|
3159 | assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE)))); |
|
|
3160 | |
|
|
3161 | EV_FREQUENT_CHECK; |
1084 | |
3162 | |
1085 | ev_start (EV_A_ (W)w, 1); |
3163 | ev_start (EV_A_ (W)w, 1); |
1086 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
3164 | array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero); |
1087 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
3165 | wlist_add (&anfds[fd].head, (WL)w); |
1088 | |
3166 | |
1089 | fd_change (EV_A_ fd); |
3167 | fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY); |
1090 | } |
3168 | w->events &= ~EV__IOFDSET; |
1091 | |
3169 | |
1092 | void |
3170 | EV_FREQUENT_CHECK; |
|
|
3171 | } |
|
|
3172 | |
|
|
3173 | void noinline |
1093 | ev_io_stop (EV_P_ struct ev_io *w) |
3174 | ev_io_stop (EV_P_ ev_io *w) |
1094 | { |
3175 | { |
1095 | ev_clear_pending (EV_A_ (W)w); |
3176 | clear_pending (EV_A_ (W)w); |
1096 | if (!ev_is_active (w)) |
3177 | if (expect_false (!ev_is_active (w))) |
1097 | return; |
3178 | return; |
1098 | |
3179 | |
|
|
3180 | assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
3181 | |
|
|
3182 | EV_FREQUENT_CHECK; |
|
|
3183 | |
1099 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
3184 | wlist_del (&anfds[w->fd].head, (WL)w); |
1100 | ev_stop (EV_A_ (W)w); |
3185 | ev_stop (EV_A_ (W)w); |
1101 | |
3186 | |
1102 | fd_change (EV_A_ w->fd); |
3187 | fd_change (EV_A_ w->fd, EV_ANFD_REIFY); |
1103 | } |
|
|
1104 | |
3188 | |
1105 | void |
3189 | EV_FREQUENT_CHECK; |
|
|
3190 | } |
|
|
3191 | |
|
|
3192 | void noinline |
1106 | ev_timer_start (EV_P_ struct ev_timer *w) |
3193 | ev_timer_start (EV_P_ ev_timer *w) |
1107 | { |
3194 | { |
1108 | if (ev_is_active (w)) |
3195 | if (expect_false (ev_is_active (w))) |
1109 | return; |
3196 | return; |
1110 | |
3197 | |
1111 | w->at += mn_now; |
3198 | ev_at (w) += mn_now; |
1112 | |
3199 | |
1113 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
3200 | assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1114 | |
3201 | |
|
|
3202 | EV_FREQUENT_CHECK; |
|
|
3203 | |
|
|
3204 | ++timercnt; |
1115 | ev_start (EV_A_ (W)w, ++timercnt); |
3205 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
1116 | array_needsize (timers, timermax, timercnt, ); |
3206 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
1117 | timers [timercnt - 1] = w; |
3207 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
1118 | upheap ((WT *)timers, timercnt - 1); |
3208 | ANHE_at_cache (timers [ev_active (w)]); |
1119 | } |
3209 | upheap (timers, ev_active (w)); |
1120 | |
3210 | |
1121 | void |
3211 | EV_FREQUENT_CHECK; |
|
|
3212 | |
|
|
3213 | /*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
3214 | } |
|
|
3215 | |
|
|
3216 | void noinline |
1122 | ev_timer_stop (EV_P_ struct ev_timer *w) |
3217 | ev_timer_stop (EV_P_ ev_timer *w) |
1123 | { |
3218 | { |
1124 | ev_clear_pending (EV_A_ (W)w); |
3219 | clear_pending (EV_A_ (W)w); |
1125 | if (!ev_is_active (w)) |
3220 | if (expect_false (!ev_is_active (w))) |
1126 | return; |
3221 | return; |
1127 | |
3222 | |
1128 | if (w->active < timercnt--) |
3223 | EV_FREQUENT_CHECK; |
|
|
3224 | |
|
|
3225 | { |
|
|
3226 | int active = ev_active (w); |
|
|
3227 | |
|
|
3228 | assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
3229 | |
|
|
3230 | --timercnt; |
|
|
3231 | |
|
|
3232 | if (expect_true (active < timercnt + HEAP0)) |
1129 | { |
3233 | { |
1130 | timers [w->active - 1] = timers [timercnt]; |
3234 | timers [active] = timers [timercnt + HEAP0]; |
1131 | downheap ((WT *)timers, timercnt, w->active - 1); |
3235 | adjustheap (timers, timercnt, active); |
1132 | } |
3236 | } |
|
|
3237 | } |
1133 | |
3238 | |
1134 | w->at = w->repeat; |
3239 | ev_at (w) -= mn_now; |
1135 | |
3240 | |
1136 | ev_stop (EV_A_ (W)w); |
3241 | ev_stop (EV_A_ (W)w); |
1137 | } |
|
|
1138 | |
3242 | |
1139 | void |
3243 | EV_FREQUENT_CHECK; |
|
|
3244 | } |
|
|
3245 | |
|
|
3246 | void noinline |
1140 | ev_timer_again (EV_P_ struct ev_timer *w) |
3247 | ev_timer_again (EV_P_ ev_timer *w) |
1141 | { |
3248 | { |
|
|
3249 | EV_FREQUENT_CHECK; |
|
|
3250 | |
1142 | if (ev_is_active (w)) |
3251 | if (ev_is_active (w)) |
1143 | { |
3252 | { |
1144 | if (w->repeat) |
3253 | if (w->repeat) |
1145 | { |
3254 | { |
1146 | w->at = mn_now + w->repeat; |
3255 | ev_at (w) = mn_now + w->repeat; |
|
|
3256 | ANHE_at_cache (timers [ev_active (w)]); |
1147 | downheap ((WT *)timers, timercnt, w->active - 1); |
3257 | adjustheap (timers, timercnt, ev_active (w)); |
1148 | } |
3258 | } |
1149 | else |
3259 | else |
1150 | ev_timer_stop (EV_A_ w); |
3260 | ev_timer_stop (EV_A_ w); |
1151 | } |
3261 | } |
1152 | else if (w->repeat) |
3262 | else if (w->repeat) |
|
|
3263 | { |
|
|
3264 | ev_at (w) = w->repeat; |
1153 | ev_timer_start (EV_A_ w); |
3265 | ev_timer_start (EV_A_ w); |
1154 | } |
3266 | } |
1155 | |
3267 | |
1156 | void |
3268 | EV_FREQUENT_CHECK; |
|
|
3269 | } |
|
|
3270 | |
|
|
3271 | ev_tstamp |
|
|
3272 | ev_timer_remaining (EV_P_ ev_timer *w) |
|
|
3273 | { |
|
|
3274 | return ev_at (w) - (ev_is_active (w) ? mn_now : 0.); |
|
|
3275 | } |
|
|
3276 | |
|
|
3277 | #if EV_PERIODIC_ENABLE |
|
|
3278 | void noinline |
1157 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
3279 | ev_periodic_start (EV_P_ ev_periodic *w) |
1158 | { |
3280 | { |
1159 | if (ev_is_active (w)) |
3281 | if (expect_false (ev_is_active (w))) |
1160 | return; |
3282 | return; |
1161 | |
3283 | |
|
|
3284 | if (w->reschedule_cb) |
|
|
3285 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
3286 | else if (w->interval) |
|
|
3287 | { |
1162 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
3288 | assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
3289 | periodic_recalc (EV_A_ w); |
|
|
3290 | } |
|
|
3291 | else |
|
|
3292 | ev_at (w) = w->offset; |
1163 | |
3293 | |
1164 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
3294 | EV_FREQUENT_CHECK; |
1165 | if (w->interval) |
|
|
1166 | w->at += ceil ((rt_now - w->at) / w->interval) * w->interval; |
|
|
1167 | |
3295 | |
|
|
3296 | ++periodiccnt; |
1168 | ev_start (EV_A_ (W)w, ++periodiccnt); |
3297 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
1169 | array_needsize (periodics, periodicmax, periodiccnt, ); |
3298 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
1170 | periodics [periodiccnt - 1] = w; |
3299 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
1171 | upheap ((WT *)periodics, periodiccnt - 1); |
3300 | ANHE_at_cache (periodics [ev_active (w)]); |
1172 | } |
3301 | upheap (periodics, ev_active (w)); |
1173 | |
3302 | |
1174 | void |
3303 | EV_FREQUENT_CHECK; |
|
|
3304 | |
|
|
3305 | /*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
3306 | } |
|
|
3307 | |
|
|
3308 | void noinline |
1175 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
3309 | ev_periodic_stop (EV_P_ ev_periodic *w) |
1176 | { |
3310 | { |
1177 | ev_clear_pending (EV_A_ (W)w); |
3311 | clear_pending (EV_A_ (W)w); |
1178 | if (!ev_is_active (w)) |
3312 | if (expect_false (!ev_is_active (w))) |
1179 | return; |
3313 | return; |
1180 | |
3314 | |
1181 | if (w->active < periodiccnt--) |
3315 | EV_FREQUENT_CHECK; |
|
|
3316 | |
|
|
3317 | { |
|
|
3318 | int active = ev_active (w); |
|
|
3319 | |
|
|
3320 | assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
|
|
3321 | |
|
|
3322 | --periodiccnt; |
|
|
3323 | |
|
|
3324 | if (expect_true (active < periodiccnt + HEAP0)) |
1182 | { |
3325 | { |
1183 | periodics [w->active - 1] = periodics [periodiccnt]; |
3326 | periodics [active] = periodics [periodiccnt + HEAP0]; |
1184 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
3327 | adjustheap (periodics, periodiccnt, active); |
1185 | } |
3328 | } |
|
|
3329 | } |
1186 | |
3330 | |
1187 | ev_stop (EV_A_ (W)w); |
3331 | ev_stop (EV_A_ (W)w); |
1188 | } |
|
|
1189 | |
3332 | |
1190 | void |
3333 | EV_FREQUENT_CHECK; |
1191 | ev_idle_start (EV_P_ struct ev_idle *w) |
|
|
1192 | { |
|
|
1193 | if (ev_is_active (w)) |
|
|
1194 | return; |
|
|
1195 | |
|
|
1196 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1197 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
1198 | idles [idlecnt - 1] = w; |
|
|
1199 | } |
3334 | } |
1200 | |
3335 | |
1201 | void |
3336 | void noinline |
1202 | ev_idle_stop (EV_P_ struct ev_idle *w) |
3337 | ev_periodic_again (EV_P_ ev_periodic *w) |
1203 | { |
3338 | { |
1204 | ev_clear_pending (EV_A_ (W)w); |
3339 | /* TODO: use adjustheap and recalculation */ |
1205 | if (ev_is_active (w)) |
|
|
1206 | return; |
|
|
1207 | |
|
|
1208 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
1209 | ev_stop (EV_A_ (W)w); |
3340 | ev_periodic_stop (EV_A_ w); |
|
|
3341 | ev_periodic_start (EV_A_ w); |
1210 | } |
3342 | } |
1211 | |
3343 | #endif |
1212 | void |
|
|
1213 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1214 | { |
|
|
1215 | if (ev_is_active (w)) |
|
|
1216 | return; |
|
|
1217 | |
|
|
1218 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1219 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
1220 | prepares [preparecnt - 1] = w; |
|
|
1221 | } |
|
|
1222 | |
|
|
1223 | void |
|
|
1224 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1225 | { |
|
|
1226 | ev_clear_pending (EV_A_ (W)w); |
|
|
1227 | if (ev_is_active (w)) |
|
|
1228 | return; |
|
|
1229 | |
|
|
1230 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
1231 | ev_stop (EV_A_ (W)w); |
|
|
1232 | } |
|
|
1233 | |
|
|
1234 | void |
|
|
1235 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1236 | { |
|
|
1237 | if (ev_is_active (w)) |
|
|
1238 | return; |
|
|
1239 | |
|
|
1240 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1241 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
1242 | checks [checkcnt - 1] = w; |
|
|
1243 | } |
|
|
1244 | |
|
|
1245 | void |
|
|
1246 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1247 | { |
|
|
1248 | ev_clear_pending (EV_A_ (W)w); |
|
|
1249 | if (ev_is_active (w)) |
|
|
1250 | return; |
|
|
1251 | |
|
|
1252 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
1253 | ev_stop (EV_A_ (W)w); |
|
|
1254 | } |
|
|
1255 | |
3344 | |
1256 | #ifndef SA_RESTART |
3345 | #ifndef SA_RESTART |
1257 | # define SA_RESTART 0 |
3346 | # define SA_RESTART 0 |
1258 | #endif |
3347 | #endif |
1259 | |
3348 | |
|
|
3349 | #if EV_SIGNAL_ENABLE |
|
|
3350 | |
|
|
3351 | void noinline |
|
|
3352 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
3353 | { |
|
|
3354 | if (expect_false (ev_is_active (w))) |
|
|
3355 | return; |
|
|
3356 | |
|
|
3357 | assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG)); |
|
|
3358 | |
|
|
3359 | #if EV_MULTIPLICITY |
|
|
3360 | assert (("libev: a signal must not be attached to two different loops", |
|
|
3361 | !signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop)); |
|
|
3362 | |
|
|
3363 | signals [w->signum - 1].loop = EV_A; |
|
|
3364 | #endif |
|
|
3365 | |
|
|
3366 | EV_FREQUENT_CHECK; |
|
|
3367 | |
|
|
3368 | #if EV_USE_SIGNALFD |
|
|
3369 | if (sigfd == -2) |
|
|
3370 | { |
|
|
3371 | sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC); |
|
|
3372 | if (sigfd < 0 && errno == EINVAL) |
|
|
3373 | sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */ |
|
|
3374 | |
|
|
3375 | if (sigfd >= 0) |
|
|
3376 | { |
|
|
3377 | fd_intern (sigfd); /* doing it twice will not hurt */ |
|
|
3378 | |
|
|
3379 | sigemptyset (&sigfd_set); |
|
|
3380 | |
|
|
3381 | ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ); |
|
|
3382 | ev_set_priority (&sigfd_w, EV_MAXPRI); |
|
|
3383 | ev_io_start (EV_A_ &sigfd_w); |
|
|
3384 | ev_unref (EV_A); /* signalfd watcher should not keep loop alive */ |
|
|
3385 | } |
|
|
3386 | } |
|
|
3387 | |
|
|
3388 | if (sigfd >= 0) |
|
|
3389 | { |
|
|
3390 | /* TODO: check .head */ |
|
|
3391 | sigaddset (&sigfd_set, w->signum); |
|
|
3392 | sigprocmask (SIG_BLOCK, &sigfd_set, 0); |
|
|
3393 | |
|
|
3394 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3395 | } |
|
|
3396 | #endif |
|
|
3397 | |
|
|
3398 | ev_start (EV_A_ (W)w, 1); |
|
|
3399 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
3400 | |
|
|
3401 | if (!((WL)w)->next) |
|
|
3402 | # if EV_USE_SIGNALFD |
|
|
3403 | if (sigfd < 0) /*TODO*/ |
|
|
3404 | # endif |
|
|
3405 | { |
|
|
3406 | # ifdef _WIN32 |
|
|
3407 | evpipe_init (EV_A); |
|
|
3408 | |
|
|
3409 | signal (w->signum, ev_sighandler); |
|
|
3410 | # else |
|
|
3411 | struct sigaction sa; |
|
|
3412 | |
|
|
3413 | evpipe_init (EV_A); |
|
|
3414 | |
|
|
3415 | sa.sa_handler = ev_sighandler; |
|
|
3416 | sigfillset (&sa.sa_mask); |
|
|
3417 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
3418 | sigaction (w->signum, &sa, 0); |
|
|
3419 | |
|
|
3420 | if (origflags & EVFLAG_NOSIGMASK) |
|
|
3421 | { |
|
|
3422 | sigemptyset (&sa.sa_mask); |
|
|
3423 | sigaddset (&sa.sa_mask, w->signum); |
|
|
3424 | sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0); |
|
|
3425 | } |
|
|
3426 | #endif |
|
|
3427 | } |
|
|
3428 | |
|
|
3429 | EV_FREQUENT_CHECK; |
|
|
3430 | } |
|
|
3431 | |
|
|
3432 | void noinline |
|
|
3433 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
3434 | { |
|
|
3435 | clear_pending (EV_A_ (W)w); |
|
|
3436 | if (expect_false (!ev_is_active (w))) |
|
|
3437 | return; |
|
|
3438 | |
|
|
3439 | EV_FREQUENT_CHECK; |
|
|
3440 | |
|
|
3441 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
3442 | ev_stop (EV_A_ (W)w); |
|
|
3443 | |
|
|
3444 | if (!signals [w->signum - 1].head) |
|
|
3445 | { |
|
|
3446 | #if EV_MULTIPLICITY |
|
|
3447 | signals [w->signum - 1].loop = 0; /* unattach from signal */ |
|
|
3448 | #endif |
|
|
3449 | #if EV_USE_SIGNALFD |
|
|
3450 | if (sigfd >= 0) |
|
|
3451 | { |
|
|
3452 | sigset_t ss; |
|
|
3453 | |
|
|
3454 | sigemptyset (&ss); |
|
|
3455 | sigaddset (&ss, w->signum); |
|
|
3456 | sigdelset (&sigfd_set, w->signum); |
|
|
3457 | |
|
|
3458 | signalfd (sigfd, &sigfd_set, 0); |
|
|
3459 | sigprocmask (SIG_UNBLOCK, &ss, 0); |
|
|
3460 | } |
|
|
3461 | else |
|
|
3462 | #endif |
|
|
3463 | signal (w->signum, SIG_DFL); |
|
|
3464 | } |
|
|
3465 | |
|
|
3466 | EV_FREQUENT_CHECK; |
|
|
3467 | } |
|
|
3468 | |
|
|
3469 | #endif |
|
|
3470 | |
|
|
3471 | #if EV_CHILD_ENABLE |
|
|
3472 | |
1260 | void |
3473 | void |
1261 | ev_signal_start (EV_P_ struct ev_signal *w) |
3474 | ev_child_start (EV_P_ ev_child *w) |
1262 | { |
3475 | { |
1263 | #if EV_MULTIPLICITY |
3476 | #if EV_MULTIPLICITY |
1264 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
3477 | assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
1265 | #endif |
3478 | #endif |
1266 | if (ev_is_active (w)) |
3479 | if (expect_false (ev_is_active (w))) |
1267 | return; |
3480 | return; |
1268 | |
3481 | |
1269 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
3482 | EV_FREQUENT_CHECK; |
1270 | |
3483 | |
1271 | ev_start (EV_A_ (W)w, 1); |
3484 | ev_start (EV_A_ (W)w, 1); |
1272 | array_needsize (signals, signalmax, w->signum, signals_init); |
3485 | wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1273 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1274 | |
3486 | |
1275 | if (!w->next) |
3487 | EV_FREQUENT_CHECK; |
1276 | { |
|
|
1277 | struct sigaction sa; |
|
|
1278 | sa.sa_handler = sighandler; |
|
|
1279 | sigfillset (&sa.sa_mask); |
|
|
1280 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1281 | sigaction (w->signum, &sa, 0); |
|
|
1282 | } |
|
|
1283 | } |
3488 | } |
1284 | |
3489 | |
1285 | void |
3490 | void |
1286 | ev_signal_stop (EV_P_ struct ev_signal *w) |
3491 | ev_child_stop (EV_P_ ev_child *w) |
1287 | { |
3492 | { |
1288 | ev_clear_pending (EV_A_ (W)w); |
3493 | clear_pending (EV_A_ (W)w); |
1289 | if (!ev_is_active (w)) |
3494 | if (expect_false (!ev_is_active (w))) |
1290 | return; |
3495 | return; |
1291 | |
3496 | |
1292 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
3497 | EV_FREQUENT_CHECK; |
|
|
3498 | |
|
|
3499 | wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w); |
1293 | ev_stop (EV_A_ (W)w); |
3500 | ev_stop (EV_A_ (W)w); |
1294 | |
3501 | |
1295 | if (!signals [w->signum - 1].head) |
3502 | EV_FREQUENT_CHECK; |
1296 | signal (w->signum, SIG_DFL); |
|
|
1297 | } |
3503 | } |
|
|
3504 | |
|
|
3505 | #endif |
|
|
3506 | |
|
|
3507 | #if EV_STAT_ENABLE |
|
|
3508 | |
|
|
3509 | # ifdef _WIN32 |
|
|
3510 | # undef lstat |
|
|
3511 | # define lstat(a,b) _stati64 (a,b) |
|
|
3512 | # endif |
|
|
3513 | |
|
|
3514 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
3515 | #define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */ |
|
|
3516 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
3517 | |
|
|
3518 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
3519 | |
|
|
3520 | #if EV_USE_INOTIFY |
|
|
3521 | |
|
|
3522 | /* the * 2 is to allow for alignment padding, which for some reason is >> 8 */ |
|
|
3523 | # define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX) |
|
|
3524 | |
|
|
3525 | static void noinline |
|
|
3526 | infy_add (EV_P_ ev_stat *w) |
|
|
3527 | { |
|
|
3528 | 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); |
|
|
3529 | |
|
|
3530 | if (w->wd >= 0) |
|
|
3531 | { |
|
|
3532 | struct statfs sfs; |
|
|
3533 | |
|
|
3534 | /* now local changes will be tracked by inotify, but remote changes won't */ |
|
|
3535 | /* unless the filesystem is known to be local, we therefore still poll */ |
|
|
3536 | /* also do poll on <2.6.25, but with normal frequency */ |
|
|
3537 | |
|
|
3538 | if (!fs_2625) |
|
|
3539 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3540 | else if (!statfs (w->path, &sfs) |
|
|
3541 | && (sfs.f_type == 0x1373 /* devfs */ |
|
|
3542 | || sfs.f_type == 0xEF53 /* ext2/3 */ |
|
|
3543 | || sfs.f_type == 0x3153464a /* jfs */ |
|
|
3544 | || sfs.f_type == 0x52654973 /* reiser3 */ |
|
|
3545 | || sfs.f_type == 0x01021994 /* tempfs */ |
|
|
3546 | || sfs.f_type == 0x58465342 /* xfs */)) |
|
|
3547 | w->timer.repeat = 0.; /* filesystem is local, kernel new enough */ |
|
|
3548 | else |
|
|
3549 | w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */ |
|
|
3550 | } |
|
|
3551 | else |
|
|
3552 | { |
|
|
3553 | /* can't use inotify, continue to stat */ |
|
|
3554 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3555 | |
|
|
3556 | /* if path is not there, monitor some parent directory for speedup hints */ |
|
|
3557 | /* note that exceeding the hardcoded path limit is not a correctness issue, */ |
|
|
3558 | /* but an efficiency issue only */ |
|
|
3559 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
3560 | { |
|
|
3561 | char path [4096]; |
|
|
3562 | strcpy (path, w->path); |
|
|
3563 | |
|
|
3564 | do |
|
|
3565 | { |
|
|
3566 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
3567 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
3568 | |
|
|
3569 | char *pend = strrchr (path, '/'); |
|
|
3570 | |
|
|
3571 | if (!pend || pend == path) |
|
|
3572 | break; |
|
|
3573 | |
|
|
3574 | *pend = 0; |
|
|
3575 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
3576 | } |
|
|
3577 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
3578 | } |
|
|
3579 | } |
|
|
3580 | |
|
|
3581 | if (w->wd >= 0) |
|
|
3582 | wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3583 | |
|
|
3584 | /* now re-arm timer, if required */ |
|
|
3585 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3586 | ev_timer_again (EV_A_ &w->timer); |
|
|
3587 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3588 | } |
|
|
3589 | |
|
|
3590 | static void noinline |
|
|
3591 | infy_del (EV_P_ ev_stat *w) |
|
|
3592 | { |
|
|
3593 | int slot; |
|
|
3594 | int wd = w->wd; |
|
|
3595 | |
|
|
3596 | if (wd < 0) |
|
|
3597 | return; |
|
|
3598 | |
|
|
3599 | w->wd = -2; |
|
|
3600 | slot = wd & ((EV_INOTIFY_HASHSIZE) - 1); |
|
|
3601 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
3602 | |
|
|
3603 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
3604 | inotify_rm_watch (fs_fd, wd); |
|
|
3605 | } |
|
|
3606 | |
|
|
3607 | static void noinline |
|
|
3608 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
3609 | { |
|
|
3610 | if (slot < 0) |
|
|
3611 | /* overflow, need to check for all hash slots */ |
|
|
3612 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3613 | infy_wd (EV_A_ slot, wd, ev); |
|
|
3614 | else |
|
|
3615 | { |
|
|
3616 | WL w_; |
|
|
3617 | |
|
|
3618 | for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; ) |
|
|
3619 | { |
|
|
3620 | ev_stat *w = (ev_stat *)w_; |
|
|
3621 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
3622 | |
|
|
3623 | if (w->wd == wd || wd == -1) |
|
|
3624 | { |
|
|
3625 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
3626 | { |
|
|
3627 | wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w); |
|
|
3628 | w->wd = -1; |
|
|
3629 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3630 | } |
|
|
3631 | |
|
|
3632 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
3633 | } |
|
|
3634 | } |
|
|
3635 | } |
|
|
3636 | } |
|
|
3637 | |
|
|
3638 | static void |
|
|
3639 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
3640 | { |
|
|
3641 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
3642 | int ofs; |
|
|
3643 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
3644 | |
|
|
3645 | for (ofs = 0; ofs < len; ) |
|
|
3646 | { |
|
|
3647 | struct inotify_event *ev = (struct inotify_event *)(buf + ofs); |
|
|
3648 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
3649 | ofs += sizeof (struct inotify_event) + ev->len; |
|
|
3650 | } |
|
|
3651 | } |
|
|
3652 | |
|
|
3653 | inline_size void ecb_cold |
|
|
3654 | ev_check_2625 (EV_P) |
|
|
3655 | { |
|
|
3656 | /* kernels < 2.6.25 are borked |
|
|
3657 | * http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html |
|
|
3658 | */ |
|
|
3659 | if (ev_linux_version () < 0x020619) |
|
|
3660 | return; |
|
|
3661 | |
|
|
3662 | fs_2625 = 1; |
|
|
3663 | } |
|
|
3664 | |
|
|
3665 | inline_size int |
|
|
3666 | infy_newfd (void) |
|
|
3667 | { |
|
|
3668 | #if defined (IN_CLOEXEC) && defined (IN_NONBLOCK) |
|
|
3669 | int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK); |
|
|
3670 | if (fd >= 0) |
|
|
3671 | return fd; |
|
|
3672 | #endif |
|
|
3673 | return inotify_init (); |
|
|
3674 | } |
|
|
3675 | |
|
|
3676 | inline_size void |
|
|
3677 | infy_init (EV_P) |
|
|
3678 | { |
|
|
3679 | if (fs_fd != -2) |
|
|
3680 | return; |
|
|
3681 | |
|
|
3682 | fs_fd = -1; |
|
|
3683 | |
|
|
3684 | ev_check_2625 (EV_A); |
|
|
3685 | |
|
|
3686 | fs_fd = infy_newfd (); |
|
|
3687 | |
|
|
3688 | if (fs_fd >= 0) |
|
|
3689 | { |
|
|
3690 | fd_intern (fs_fd); |
|
|
3691 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
3692 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
3693 | ev_io_start (EV_A_ &fs_w); |
|
|
3694 | ev_unref (EV_A); |
|
|
3695 | } |
|
|
3696 | } |
|
|
3697 | |
|
|
3698 | inline_size void |
|
|
3699 | infy_fork (EV_P) |
|
|
3700 | { |
|
|
3701 | int slot; |
|
|
3702 | |
|
|
3703 | if (fs_fd < 0) |
|
|
3704 | return; |
|
|
3705 | |
|
|
3706 | ev_ref (EV_A); |
|
|
3707 | ev_io_stop (EV_A_ &fs_w); |
|
|
3708 | close (fs_fd); |
|
|
3709 | fs_fd = infy_newfd (); |
|
|
3710 | |
|
|
3711 | if (fs_fd >= 0) |
|
|
3712 | { |
|
|
3713 | fd_intern (fs_fd); |
|
|
3714 | ev_io_set (&fs_w, fs_fd, EV_READ); |
|
|
3715 | ev_io_start (EV_A_ &fs_w); |
|
|
3716 | ev_unref (EV_A); |
|
|
3717 | } |
|
|
3718 | |
|
|
3719 | for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot) |
|
|
3720 | { |
|
|
3721 | WL w_ = fs_hash [slot].head; |
|
|
3722 | fs_hash [slot].head = 0; |
|
|
3723 | |
|
|
3724 | while (w_) |
|
|
3725 | { |
|
|
3726 | ev_stat *w = (ev_stat *)w_; |
|
|
3727 | w_ = w_->next; /* lets us add this watcher */ |
|
|
3728 | |
|
|
3729 | w->wd = -1; |
|
|
3730 | |
|
|
3731 | if (fs_fd >= 0) |
|
|
3732 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
3733 | else |
|
|
3734 | { |
|
|
3735 | w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL; |
|
|
3736 | if (ev_is_active (&w->timer)) ev_ref (EV_A); |
|
|
3737 | ev_timer_again (EV_A_ &w->timer); |
|
|
3738 | if (ev_is_active (&w->timer)) ev_unref (EV_A); |
|
|
3739 | } |
|
|
3740 | } |
|
|
3741 | } |
|
|
3742 | } |
|
|
3743 | |
|
|
3744 | #endif |
|
|
3745 | |
|
|
3746 | #ifdef _WIN32 |
|
|
3747 | # define EV_LSTAT(p,b) _stati64 (p, b) |
|
|
3748 | #else |
|
|
3749 | # define EV_LSTAT(p,b) lstat (p, b) |
|
|
3750 | #endif |
1298 | |
3751 | |
1299 | void |
3752 | void |
1300 | ev_child_start (EV_P_ struct ev_child *w) |
3753 | ev_stat_stat (EV_P_ ev_stat *w) |
1301 | { |
3754 | { |
1302 | #if EV_MULTIPLICITY |
3755 | if (lstat (w->path, &w->attr) < 0) |
1303 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
3756 | w->attr.st_nlink = 0; |
1304 | #endif |
3757 | else if (!w->attr.st_nlink) |
|
|
3758 | w->attr.st_nlink = 1; |
|
|
3759 | } |
|
|
3760 | |
|
|
3761 | static void noinline |
|
|
3762 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
3763 | { |
|
|
3764 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
3765 | |
|
|
3766 | ev_statdata prev = w->attr; |
|
|
3767 | ev_stat_stat (EV_A_ w); |
|
|
3768 | |
|
|
3769 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
3770 | if ( |
|
|
3771 | prev.st_dev != w->attr.st_dev |
|
|
3772 | || prev.st_ino != w->attr.st_ino |
|
|
3773 | || prev.st_mode != w->attr.st_mode |
|
|
3774 | || prev.st_nlink != w->attr.st_nlink |
|
|
3775 | || prev.st_uid != w->attr.st_uid |
|
|
3776 | || prev.st_gid != w->attr.st_gid |
|
|
3777 | || prev.st_rdev != w->attr.st_rdev |
|
|
3778 | || prev.st_size != w->attr.st_size |
|
|
3779 | || prev.st_atime != w->attr.st_atime |
|
|
3780 | || prev.st_mtime != w->attr.st_mtime |
|
|
3781 | || prev.st_ctime != w->attr.st_ctime |
|
|
3782 | ) { |
|
|
3783 | /* we only update w->prev on actual differences */ |
|
|
3784 | /* in case we test more often than invoke the callback, */ |
|
|
3785 | /* to ensure that prev is always different to attr */ |
|
|
3786 | w->prev = prev; |
|
|
3787 | |
|
|
3788 | #if EV_USE_INOTIFY |
|
|
3789 | if (fs_fd >= 0) |
|
|
3790 | { |
|
|
3791 | infy_del (EV_A_ w); |
|
|
3792 | infy_add (EV_A_ w); |
|
|
3793 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
3794 | } |
|
|
3795 | #endif |
|
|
3796 | |
|
|
3797 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
3798 | } |
|
|
3799 | } |
|
|
3800 | |
|
|
3801 | void |
|
|
3802 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
3803 | { |
1305 | if (ev_is_active (w)) |
3804 | if (expect_false (ev_is_active (w))) |
1306 | return; |
3805 | return; |
1307 | |
3806 | |
|
|
3807 | ev_stat_stat (EV_A_ w); |
|
|
3808 | |
|
|
3809 | if (w->interval < MIN_STAT_INTERVAL && w->interval) |
|
|
3810 | w->interval = MIN_STAT_INTERVAL; |
|
|
3811 | |
|
|
3812 | ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL); |
|
|
3813 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
3814 | |
|
|
3815 | #if EV_USE_INOTIFY |
|
|
3816 | infy_init (EV_A); |
|
|
3817 | |
|
|
3818 | if (fs_fd >= 0) |
|
|
3819 | infy_add (EV_A_ w); |
|
|
3820 | else |
|
|
3821 | #endif |
|
|
3822 | { |
|
|
3823 | ev_timer_again (EV_A_ &w->timer); |
|
|
3824 | ev_unref (EV_A); |
|
|
3825 | } |
|
|
3826 | |
1308 | ev_start (EV_A_ (W)w, 1); |
3827 | ev_start (EV_A_ (W)w, 1); |
1309 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3828 | |
|
|
3829 | EV_FREQUENT_CHECK; |
1310 | } |
3830 | } |
1311 | |
3831 | |
1312 | void |
3832 | void |
1313 | ev_child_stop (EV_P_ struct ev_child *w) |
3833 | ev_stat_stop (EV_P_ ev_stat *w) |
1314 | { |
3834 | { |
1315 | ev_clear_pending (EV_A_ (W)w); |
3835 | clear_pending (EV_A_ (W)w); |
1316 | if (ev_is_active (w)) |
3836 | if (expect_false (!ev_is_active (w))) |
1317 | return; |
3837 | return; |
1318 | |
3838 | |
1319 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
3839 | EV_FREQUENT_CHECK; |
|
|
3840 | |
|
|
3841 | #if EV_USE_INOTIFY |
|
|
3842 | infy_del (EV_A_ w); |
|
|
3843 | #endif |
|
|
3844 | |
|
|
3845 | if (ev_is_active (&w->timer)) |
|
|
3846 | { |
|
|
3847 | ev_ref (EV_A); |
|
|
3848 | ev_timer_stop (EV_A_ &w->timer); |
|
|
3849 | } |
|
|
3850 | |
1320 | ev_stop (EV_A_ (W)w); |
3851 | ev_stop (EV_A_ (W)w); |
|
|
3852 | |
|
|
3853 | EV_FREQUENT_CHECK; |
1321 | } |
3854 | } |
|
|
3855 | #endif |
|
|
3856 | |
|
|
3857 | #if EV_IDLE_ENABLE |
|
|
3858 | void |
|
|
3859 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
3860 | { |
|
|
3861 | if (expect_false (ev_is_active (w))) |
|
|
3862 | return; |
|
|
3863 | |
|
|
3864 | pri_adjust (EV_A_ (W)w); |
|
|
3865 | |
|
|
3866 | EV_FREQUENT_CHECK; |
|
|
3867 | |
|
|
3868 | { |
|
|
3869 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
3870 | |
|
|
3871 | ++idleall; |
|
|
3872 | ev_start (EV_A_ (W)w, active); |
|
|
3873 | |
|
|
3874 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
3875 | idles [ABSPRI (w)][active - 1] = w; |
|
|
3876 | } |
|
|
3877 | |
|
|
3878 | EV_FREQUENT_CHECK; |
|
|
3879 | } |
|
|
3880 | |
|
|
3881 | void |
|
|
3882 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
3883 | { |
|
|
3884 | clear_pending (EV_A_ (W)w); |
|
|
3885 | if (expect_false (!ev_is_active (w))) |
|
|
3886 | return; |
|
|
3887 | |
|
|
3888 | EV_FREQUENT_CHECK; |
|
|
3889 | |
|
|
3890 | { |
|
|
3891 | int active = ev_active (w); |
|
|
3892 | |
|
|
3893 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
3894 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
3895 | |
|
|
3896 | ev_stop (EV_A_ (W)w); |
|
|
3897 | --idleall; |
|
|
3898 | } |
|
|
3899 | |
|
|
3900 | EV_FREQUENT_CHECK; |
|
|
3901 | } |
|
|
3902 | #endif |
|
|
3903 | |
|
|
3904 | #if EV_PREPARE_ENABLE |
|
|
3905 | void |
|
|
3906 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
3907 | { |
|
|
3908 | if (expect_false (ev_is_active (w))) |
|
|
3909 | return; |
|
|
3910 | |
|
|
3911 | EV_FREQUENT_CHECK; |
|
|
3912 | |
|
|
3913 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
3914 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
3915 | prepares [preparecnt - 1] = w; |
|
|
3916 | |
|
|
3917 | EV_FREQUENT_CHECK; |
|
|
3918 | } |
|
|
3919 | |
|
|
3920 | void |
|
|
3921 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
3922 | { |
|
|
3923 | clear_pending (EV_A_ (W)w); |
|
|
3924 | if (expect_false (!ev_is_active (w))) |
|
|
3925 | return; |
|
|
3926 | |
|
|
3927 | EV_FREQUENT_CHECK; |
|
|
3928 | |
|
|
3929 | { |
|
|
3930 | int active = ev_active (w); |
|
|
3931 | |
|
|
3932 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
3933 | ev_active (prepares [active - 1]) = active; |
|
|
3934 | } |
|
|
3935 | |
|
|
3936 | ev_stop (EV_A_ (W)w); |
|
|
3937 | |
|
|
3938 | EV_FREQUENT_CHECK; |
|
|
3939 | } |
|
|
3940 | #endif |
|
|
3941 | |
|
|
3942 | #if EV_CHECK_ENABLE |
|
|
3943 | void |
|
|
3944 | ev_check_start (EV_P_ ev_check *w) |
|
|
3945 | { |
|
|
3946 | if (expect_false (ev_is_active (w))) |
|
|
3947 | return; |
|
|
3948 | |
|
|
3949 | EV_FREQUENT_CHECK; |
|
|
3950 | |
|
|
3951 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
3952 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
3953 | checks [checkcnt - 1] = w; |
|
|
3954 | |
|
|
3955 | EV_FREQUENT_CHECK; |
|
|
3956 | } |
|
|
3957 | |
|
|
3958 | void |
|
|
3959 | ev_check_stop (EV_P_ ev_check *w) |
|
|
3960 | { |
|
|
3961 | clear_pending (EV_A_ (W)w); |
|
|
3962 | if (expect_false (!ev_is_active (w))) |
|
|
3963 | return; |
|
|
3964 | |
|
|
3965 | EV_FREQUENT_CHECK; |
|
|
3966 | |
|
|
3967 | { |
|
|
3968 | int active = ev_active (w); |
|
|
3969 | |
|
|
3970 | checks [active - 1] = checks [--checkcnt]; |
|
|
3971 | ev_active (checks [active - 1]) = active; |
|
|
3972 | } |
|
|
3973 | |
|
|
3974 | ev_stop (EV_A_ (W)w); |
|
|
3975 | |
|
|
3976 | EV_FREQUENT_CHECK; |
|
|
3977 | } |
|
|
3978 | #endif |
|
|
3979 | |
|
|
3980 | #if EV_EMBED_ENABLE |
|
|
3981 | void noinline |
|
|
3982 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
3983 | { |
|
|
3984 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
3985 | } |
|
|
3986 | |
|
|
3987 | static void |
|
|
3988 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
3989 | { |
|
|
3990 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
3991 | |
|
|
3992 | if (ev_cb (w)) |
|
|
3993 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
3994 | else |
|
|
3995 | ev_run (w->other, EVRUN_NOWAIT); |
|
|
3996 | } |
|
|
3997 | |
|
|
3998 | static void |
|
|
3999 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
4000 | { |
|
|
4001 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
4002 | |
|
|
4003 | { |
|
|
4004 | EV_P = w->other; |
|
|
4005 | |
|
|
4006 | while (fdchangecnt) |
|
|
4007 | { |
|
|
4008 | fd_reify (EV_A); |
|
|
4009 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4010 | } |
|
|
4011 | } |
|
|
4012 | } |
|
|
4013 | |
|
|
4014 | static void |
|
|
4015 | embed_fork_cb (EV_P_ ev_fork *fork_w, int revents) |
|
|
4016 | { |
|
|
4017 | ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork)); |
|
|
4018 | |
|
|
4019 | ev_embed_stop (EV_A_ w); |
|
|
4020 | |
|
|
4021 | { |
|
|
4022 | EV_P = w->other; |
|
|
4023 | |
|
|
4024 | ev_loop_fork (EV_A); |
|
|
4025 | ev_run (EV_A_ EVRUN_NOWAIT); |
|
|
4026 | } |
|
|
4027 | |
|
|
4028 | ev_embed_start (EV_A_ w); |
|
|
4029 | } |
|
|
4030 | |
|
|
4031 | #if 0 |
|
|
4032 | static void |
|
|
4033 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
4034 | { |
|
|
4035 | ev_idle_stop (EV_A_ idle); |
|
|
4036 | } |
|
|
4037 | #endif |
|
|
4038 | |
|
|
4039 | void |
|
|
4040 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
4041 | { |
|
|
4042 | if (expect_false (ev_is_active (w))) |
|
|
4043 | return; |
|
|
4044 | |
|
|
4045 | { |
|
|
4046 | EV_P = w->other; |
|
|
4047 | assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
4048 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
4049 | } |
|
|
4050 | |
|
|
4051 | EV_FREQUENT_CHECK; |
|
|
4052 | |
|
|
4053 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
4054 | ev_io_start (EV_A_ &w->io); |
|
|
4055 | |
|
|
4056 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
4057 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
4058 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
4059 | |
|
|
4060 | ev_fork_init (&w->fork, embed_fork_cb); |
|
|
4061 | ev_fork_start (EV_A_ &w->fork); |
|
|
4062 | |
|
|
4063 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
4064 | |
|
|
4065 | ev_start (EV_A_ (W)w, 1); |
|
|
4066 | |
|
|
4067 | EV_FREQUENT_CHECK; |
|
|
4068 | } |
|
|
4069 | |
|
|
4070 | void |
|
|
4071 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
4072 | { |
|
|
4073 | clear_pending (EV_A_ (W)w); |
|
|
4074 | if (expect_false (!ev_is_active (w))) |
|
|
4075 | return; |
|
|
4076 | |
|
|
4077 | EV_FREQUENT_CHECK; |
|
|
4078 | |
|
|
4079 | ev_io_stop (EV_A_ &w->io); |
|
|
4080 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
4081 | ev_fork_stop (EV_A_ &w->fork); |
|
|
4082 | |
|
|
4083 | ev_stop (EV_A_ (W)w); |
|
|
4084 | |
|
|
4085 | EV_FREQUENT_CHECK; |
|
|
4086 | } |
|
|
4087 | #endif |
|
|
4088 | |
|
|
4089 | #if EV_FORK_ENABLE |
|
|
4090 | void |
|
|
4091 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
4092 | { |
|
|
4093 | if (expect_false (ev_is_active (w))) |
|
|
4094 | return; |
|
|
4095 | |
|
|
4096 | EV_FREQUENT_CHECK; |
|
|
4097 | |
|
|
4098 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
4099 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
4100 | forks [forkcnt - 1] = w; |
|
|
4101 | |
|
|
4102 | EV_FREQUENT_CHECK; |
|
|
4103 | } |
|
|
4104 | |
|
|
4105 | void |
|
|
4106 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
4107 | { |
|
|
4108 | clear_pending (EV_A_ (W)w); |
|
|
4109 | if (expect_false (!ev_is_active (w))) |
|
|
4110 | return; |
|
|
4111 | |
|
|
4112 | EV_FREQUENT_CHECK; |
|
|
4113 | |
|
|
4114 | { |
|
|
4115 | int active = ev_active (w); |
|
|
4116 | |
|
|
4117 | forks [active - 1] = forks [--forkcnt]; |
|
|
4118 | ev_active (forks [active - 1]) = active; |
|
|
4119 | } |
|
|
4120 | |
|
|
4121 | ev_stop (EV_A_ (W)w); |
|
|
4122 | |
|
|
4123 | EV_FREQUENT_CHECK; |
|
|
4124 | } |
|
|
4125 | #endif |
|
|
4126 | |
|
|
4127 | #if EV_CLEANUP_ENABLE |
|
|
4128 | void |
|
|
4129 | ev_cleanup_start (EV_P_ ev_cleanup *w) |
|
|
4130 | { |
|
|
4131 | if (expect_false (ev_is_active (w))) |
|
|
4132 | return; |
|
|
4133 | |
|
|
4134 | EV_FREQUENT_CHECK; |
|
|
4135 | |
|
|
4136 | ev_start (EV_A_ (W)w, ++cleanupcnt); |
|
|
4137 | array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2); |
|
|
4138 | cleanups [cleanupcnt - 1] = w; |
|
|
4139 | |
|
|
4140 | /* cleanup watchers should never keep a refcount on the loop */ |
|
|
4141 | ev_unref (EV_A); |
|
|
4142 | EV_FREQUENT_CHECK; |
|
|
4143 | } |
|
|
4144 | |
|
|
4145 | void |
|
|
4146 | ev_cleanup_stop (EV_P_ ev_cleanup *w) |
|
|
4147 | { |
|
|
4148 | clear_pending (EV_A_ (W)w); |
|
|
4149 | if (expect_false (!ev_is_active (w))) |
|
|
4150 | return; |
|
|
4151 | |
|
|
4152 | EV_FREQUENT_CHECK; |
|
|
4153 | ev_ref (EV_A); |
|
|
4154 | |
|
|
4155 | { |
|
|
4156 | int active = ev_active (w); |
|
|
4157 | |
|
|
4158 | cleanups [active - 1] = cleanups [--cleanupcnt]; |
|
|
4159 | ev_active (cleanups [active - 1]) = active; |
|
|
4160 | } |
|
|
4161 | |
|
|
4162 | ev_stop (EV_A_ (W)w); |
|
|
4163 | |
|
|
4164 | EV_FREQUENT_CHECK; |
|
|
4165 | } |
|
|
4166 | #endif |
|
|
4167 | |
|
|
4168 | #if EV_ASYNC_ENABLE |
|
|
4169 | void |
|
|
4170 | ev_async_start (EV_P_ ev_async *w) |
|
|
4171 | { |
|
|
4172 | if (expect_false (ev_is_active (w))) |
|
|
4173 | return; |
|
|
4174 | |
|
|
4175 | w->sent = 0; |
|
|
4176 | |
|
|
4177 | evpipe_init (EV_A); |
|
|
4178 | |
|
|
4179 | EV_FREQUENT_CHECK; |
|
|
4180 | |
|
|
4181 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
4182 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
4183 | asyncs [asynccnt - 1] = w; |
|
|
4184 | |
|
|
4185 | EV_FREQUENT_CHECK; |
|
|
4186 | } |
|
|
4187 | |
|
|
4188 | void |
|
|
4189 | ev_async_stop (EV_P_ ev_async *w) |
|
|
4190 | { |
|
|
4191 | clear_pending (EV_A_ (W)w); |
|
|
4192 | if (expect_false (!ev_is_active (w))) |
|
|
4193 | return; |
|
|
4194 | |
|
|
4195 | EV_FREQUENT_CHECK; |
|
|
4196 | |
|
|
4197 | { |
|
|
4198 | int active = ev_active (w); |
|
|
4199 | |
|
|
4200 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
4201 | ev_active (asyncs [active - 1]) = active; |
|
|
4202 | } |
|
|
4203 | |
|
|
4204 | ev_stop (EV_A_ (W)w); |
|
|
4205 | |
|
|
4206 | EV_FREQUENT_CHECK; |
|
|
4207 | } |
|
|
4208 | |
|
|
4209 | void |
|
|
4210 | ev_async_send (EV_P_ ev_async *w) |
|
|
4211 | { |
|
|
4212 | w->sent = 1; |
|
|
4213 | evpipe_write (EV_A_ &async_pending); |
|
|
4214 | } |
|
|
4215 | #endif |
1322 | |
4216 | |
1323 | /*****************************************************************************/ |
4217 | /*****************************************************************************/ |
1324 | |
4218 | |
1325 | struct ev_once |
4219 | struct ev_once |
1326 | { |
4220 | { |
1327 | struct ev_io io; |
4221 | ev_io io; |
1328 | struct ev_timer to; |
4222 | ev_timer to; |
1329 | void (*cb)(int revents, void *arg); |
4223 | void (*cb)(int revents, void *arg); |
1330 | void *arg; |
4224 | void *arg; |
1331 | }; |
4225 | }; |
1332 | |
4226 | |
1333 | static void |
4227 | static void |
1334 | once_cb (EV_P_ struct ev_once *once, int revents) |
4228 | once_cb (EV_P_ struct ev_once *once, int revents) |
1335 | { |
4229 | { |
1336 | void (*cb)(int revents, void *arg) = once->cb; |
4230 | void (*cb)(int revents, void *arg) = once->cb; |
1337 | void *arg = once->arg; |
4231 | void *arg = once->arg; |
1338 | |
4232 | |
1339 | ev_io_stop (EV_A_ &once->io); |
4233 | ev_io_stop (EV_A_ &once->io); |
1340 | ev_timer_stop (EV_A_ &once->to); |
4234 | ev_timer_stop (EV_A_ &once->to); |
1341 | free (once); |
4235 | ev_free (once); |
1342 | |
4236 | |
1343 | cb (revents, arg); |
4237 | cb (revents, arg); |
1344 | } |
4238 | } |
1345 | |
4239 | |
1346 | static void |
4240 | static void |
1347 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
4241 | once_cb_io (EV_P_ ev_io *w, int revents) |
1348 | { |
4242 | { |
1349 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
4243 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)); |
|
|
4244 | |
|
|
4245 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to)); |
1350 | } |
4246 | } |
1351 | |
4247 | |
1352 | static void |
4248 | static void |
1353 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
4249 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1354 | { |
4250 | { |
1355 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
4251 | struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)); |
|
|
4252 | |
|
|
4253 | once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io)); |
1356 | } |
4254 | } |
1357 | |
4255 | |
1358 | void |
4256 | void |
1359 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
4257 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1360 | { |
4258 | { |
1361 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
4259 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1362 | |
4260 | |
1363 | if (!once) |
4261 | if (expect_false (!once)) |
|
|
4262 | { |
1364 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
4263 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg); |
1365 | else |
4264 | return; |
1366 | { |
4265 | } |
|
|
4266 | |
1367 | once->cb = cb; |
4267 | once->cb = cb; |
1368 | once->arg = arg; |
4268 | once->arg = arg; |
1369 | |
4269 | |
1370 | ev_watcher_init (&once->io, once_cb_io); |
4270 | ev_init (&once->io, once_cb_io); |
1371 | if (fd >= 0) |
4271 | if (fd >= 0) |
|
|
4272 | { |
|
|
4273 | ev_io_set (&once->io, fd, events); |
|
|
4274 | ev_io_start (EV_A_ &once->io); |
|
|
4275 | } |
|
|
4276 | |
|
|
4277 | ev_init (&once->to, once_cb_to); |
|
|
4278 | if (timeout >= 0.) |
|
|
4279 | { |
|
|
4280 | ev_timer_set (&once->to, timeout, 0.); |
|
|
4281 | ev_timer_start (EV_A_ &once->to); |
|
|
4282 | } |
|
|
4283 | } |
|
|
4284 | |
|
|
4285 | /*****************************************************************************/ |
|
|
4286 | |
|
|
4287 | #if EV_WALK_ENABLE |
|
|
4288 | void ecb_cold |
|
|
4289 | ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) |
|
|
4290 | { |
|
|
4291 | int i, j; |
|
|
4292 | ev_watcher_list *wl, *wn; |
|
|
4293 | |
|
|
4294 | if (types & (EV_IO | EV_EMBED)) |
|
|
4295 | for (i = 0; i < anfdmax; ++i) |
|
|
4296 | for (wl = anfds [i].head; wl; ) |
1372 | { |
4297 | { |
1373 | ev_io_set (&once->io, fd, events); |
4298 | wn = wl->next; |
1374 | ev_io_start (EV_A_ &once->io); |
4299 | |
|
|
4300 | #if EV_EMBED_ENABLE |
|
|
4301 | if (ev_cb ((ev_io *)wl) == embed_io_cb) |
|
|
4302 | { |
|
|
4303 | if (types & EV_EMBED) |
|
|
4304 | cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io)); |
|
|
4305 | } |
|
|
4306 | else |
|
|
4307 | #endif |
|
|
4308 | #if EV_USE_INOTIFY |
|
|
4309 | if (ev_cb ((ev_io *)wl) == infy_cb) |
|
|
4310 | ; |
|
|
4311 | else |
|
|
4312 | #endif |
|
|
4313 | if ((ev_io *)wl != &pipe_w) |
|
|
4314 | if (types & EV_IO) |
|
|
4315 | cb (EV_A_ EV_IO, wl); |
|
|
4316 | |
|
|
4317 | wl = wn; |
1375 | } |
4318 | } |
1376 | |
4319 | |
1377 | ev_watcher_init (&once->to, once_cb_to); |
4320 | if (types & (EV_TIMER | EV_STAT)) |
1378 | if (timeout >= 0.) |
4321 | for (i = timercnt + HEAP0; i-- > HEAP0; ) |
|
|
4322 | #if EV_STAT_ENABLE |
|
|
4323 | /*TODO: timer is not always active*/ |
|
|
4324 | if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb) |
1379 | { |
4325 | { |
1380 | ev_timer_set (&once->to, timeout, 0.); |
4326 | if (types & EV_STAT) |
1381 | ev_timer_start (EV_A_ &once->to); |
4327 | cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer)); |
1382 | } |
4328 | } |
1383 | } |
4329 | else |
1384 | } |
4330 | #endif |
|
|
4331 | if (types & EV_TIMER) |
|
|
4332 | cb (EV_A_ EV_TIMER, ANHE_w (timers [i])); |
1385 | |
4333 | |
|
|
4334 | #if EV_PERIODIC_ENABLE |
|
|
4335 | if (types & EV_PERIODIC) |
|
|
4336 | for (i = periodiccnt + HEAP0; i-- > HEAP0; ) |
|
|
4337 | cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i])); |
|
|
4338 | #endif |
|
|
4339 | |
|
|
4340 | #if EV_IDLE_ENABLE |
|
|
4341 | if (types & EV_IDLE) |
|
|
4342 | for (j = NUMPRI; j--; ) |
|
|
4343 | for (i = idlecnt [j]; i--; ) |
|
|
4344 | cb (EV_A_ EV_IDLE, idles [j][i]); |
|
|
4345 | #endif |
|
|
4346 | |
|
|
4347 | #if EV_FORK_ENABLE |
|
|
4348 | if (types & EV_FORK) |
|
|
4349 | for (i = forkcnt; i--; ) |
|
|
4350 | if (ev_cb (forks [i]) != embed_fork_cb) |
|
|
4351 | cb (EV_A_ EV_FORK, forks [i]); |
|
|
4352 | #endif |
|
|
4353 | |
|
|
4354 | #if EV_ASYNC_ENABLE |
|
|
4355 | if (types & EV_ASYNC) |
|
|
4356 | for (i = asynccnt; i--; ) |
|
|
4357 | cb (EV_A_ EV_ASYNC, asyncs [i]); |
|
|
4358 | #endif |
|
|
4359 | |
|
|
4360 | #if EV_PREPARE_ENABLE |
|
|
4361 | if (types & EV_PREPARE) |
|
|
4362 | for (i = preparecnt; i--; ) |
|
|
4363 | # if EV_EMBED_ENABLE |
|
|
4364 | if (ev_cb (prepares [i]) != embed_prepare_cb) |
|
|
4365 | # endif |
|
|
4366 | cb (EV_A_ EV_PREPARE, prepares [i]); |
|
|
4367 | #endif |
|
|
4368 | |
|
|
4369 | #if EV_CHECK_ENABLE |
|
|
4370 | if (types & EV_CHECK) |
|
|
4371 | for (i = checkcnt; i--; ) |
|
|
4372 | cb (EV_A_ EV_CHECK, checks [i]); |
|
|
4373 | #endif |
|
|
4374 | |
|
|
4375 | #if EV_SIGNAL_ENABLE |
|
|
4376 | if (types & EV_SIGNAL) |
|
|
4377 | for (i = 0; i < EV_NSIG - 1; ++i) |
|
|
4378 | for (wl = signals [i].head; wl; ) |
|
|
4379 | { |
|
|
4380 | wn = wl->next; |
|
|
4381 | cb (EV_A_ EV_SIGNAL, wl); |
|
|
4382 | wl = wn; |
|
|
4383 | } |
|
|
4384 | #endif |
|
|
4385 | |
|
|
4386 | #if EV_CHILD_ENABLE |
|
|
4387 | if (types & EV_CHILD) |
|
|
4388 | for (i = (EV_PID_HASHSIZE); i--; ) |
|
|
4389 | for (wl = childs [i]; wl; ) |
|
|
4390 | { |
|
|
4391 | wn = wl->next; |
|
|
4392 | cb (EV_A_ EV_CHILD, wl); |
|
|
4393 | wl = wn; |
|
|
4394 | } |
|
|
4395 | #endif |
|
|
4396 | /* EV_STAT 0x00001000 /* stat data changed */ |
|
|
4397 | /* EV_EMBED 0x00010000 /* embedded event loop needs sweep */ |
|
|
4398 | } |
|
|
4399 | #endif |
|
|
4400 | |
|
|
4401 | #if EV_MULTIPLICITY |
|
|
4402 | #include "ev_wrap.h" |
|
|
4403 | #endif |
|
|
4404 | |
|
|
4405 | EV_CPP(}) |
|
|
4406 | |