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1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
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4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
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5 | * All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without modifica- |
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8 | * tion, are permitted provided that the following conditions are met: |
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9 | * |
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10 | * 1. Redistributions of source code must retain the above copyright notice, |
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11 | * this list of conditions and the following disclaimer. |
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12 | * |
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13 | * 2. Redistributions in binary form must reproduce the above copyright |
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14 | * notice, this list of conditions and the following disclaimer in the |
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15 | * documentation and/or other materials provided with the distribution. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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18 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
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19 | * CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
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20 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
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21 | * CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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22 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
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23 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
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25 | * ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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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. |
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38 | */ |
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39 | |
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40 | #ifdef __cplusplus |
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41 | extern "C" { |
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42 | #endif |
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43 | |
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44 | /* this big block deduces configuration from config.h */ |
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45 | #ifndef EV_STANDALONE |
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46 | # ifdef EV_CONFIG_H |
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47 | # include EV_CONFIG_H |
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48 | # else |
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49 | # include "config.h" |
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50 | # endif |
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51 | |
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52 | # if HAVE_CLOCK_GETTIME |
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53 | # ifndef EV_USE_MONOTONIC |
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54 | # define EV_USE_MONOTONIC 1 |
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55 | # endif |
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56 | # ifndef EV_USE_REALTIME |
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57 | # define EV_USE_REALTIME 1 |
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58 | # endif |
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59 | # else |
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60 | # ifndef EV_USE_MONOTONIC |
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61 | # define EV_USE_MONOTONIC 0 |
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62 | # endif |
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63 | # ifndef EV_USE_REALTIME |
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64 | # define EV_USE_REALTIME 0 |
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65 | # endif |
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66 | # endif |
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67 | |
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68 | # ifndef EV_USE_NANOSLEEP |
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69 | # if HAVE_NANOSLEEP |
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70 | # define EV_USE_NANOSLEEP 1 |
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71 | # else |
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72 | # define EV_USE_NANOSLEEP 0 |
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73 | # endif |
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74 | # endif |
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75 | |
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76 | # ifndef EV_USE_SELECT |
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77 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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78 | # define EV_USE_SELECT 1 |
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79 | # else |
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80 | # define EV_USE_SELECT 0 |
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81 | # endif |
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82 | # endif |
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83 | |
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84 | # ifndef EV_USE_POLL |
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85 | # if HAVE_POLL && HAVE_POLL_H |
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86 | # define EV_USE_POLL 1 |
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87 | # else |
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88 | # define EV_USE_POLL 0 |
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89 | # endif |
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90 | # endif |
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91 | |
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92 | # ifndef EV_USE_EPOLL |
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93 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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94 | # define EV_USE_EPOLL 1 |
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95 | # else |
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96 | # define EV_USE_EPOLL 0 |
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97 | # endif |
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98 | # endif |
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99 | |
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100 | # ifndef EV_USE_KQUEUE |
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101 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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102 | # define EV_USE_KQUEUE 1 |
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103 | # else |
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104 | # define EV_USE_KQUEUE 0 |
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105 | # endif |
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106 | # endif |
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107 | |
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108 | # ifndef EV_USE_PORT |
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109 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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110 | # define EV_USE_PORT 1 |
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111 | # else |
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112 | # define EV_USE_PORT 0 |
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113 | # endif |
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114 | # endif |
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115 | |
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116 | # ifndef EV_USE_INOTIFY |
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117 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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118 | # define EV_USE_INOTIFY 1 |
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119 | # else |
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120 | # define EV_USE_INOTIFY 0 |
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121 | # endif |
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122 | # endif |
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123 | |
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124 | # ifndef EV_USE_EVENTFD |
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125 | # if HAVE_EVENTFD |
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126 | # define EV_USE_EVENTFD 1 |
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127 | # else |
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128 | # define EV_USE_EVENTFD 0 |
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129 | # endif |
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130 | # endif |
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131 | |
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132 | #endif |
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133 | |
1 | #include <math.h> |
134 | #include <math.h> |
2 | #include <stdlib.h> |
135 | #include <stdlib.h> |
3 | #include <unistd.h> |
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4 | #include <fcntl.h> |
136 | #include <fcntl.h> |
5 | #include <signal.h> |
137 | #include <stddef.h> |
6 | |
138 | |
7 | #include <stdio.h> |
139 | #include <stdio.h> |
8 | |
140 | |
9 | #include <assert.h> |
141 | #include <assert.h> |
10 | #include <errno.h> |
142 | #include <errno.h> |
11 | #include <sys/time.h> |
143 | #include <sys/types.h> |
12 | #include <time.h> |
144 | #include <time.h> |
13 | |
145 | |
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146 | #include <signal.h> |
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147 | |
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148 | #ifdef EV_H |
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149 | # include EV_H |
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150 | #else |
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151 | # include "ev.h" |
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152 | #endif |
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153 | |
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154 | #ifndef _WIN32 |
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155 | # include <sys/time.h> |
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156 | # include <sys/wait.h> |
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157 | # include <unistd.h> |
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158 | #else |
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159 | # define WIN32_LEAN_AND_MEAN |
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160 | # include <windows.h> |
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161 | # ifndef EV_SELECT_IS_WINSOCKET |
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162 | # define EV_SELECT_IS_WINSOCKET 1 |
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163 | # endif |
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164 | #endif |
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165 | |
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166 | /* this block tries to deduce configuration from header-defined symbols and defaults */ |
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167 | |
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168 | #ifndef EV_USE_MONOTONIC |
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169 | # if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0 |
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170 | # define EV_USE_MONOTONIC 1 |
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171 | # else |
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172 | # define EV_USE_MONOTONIC 0 |
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173 | # endif |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_REALTIME |
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177 | # define EV_USE_REALTIME 0 |
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178 | #endif |
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179 | |
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180 | #ifndef EV_USE_NANOSLEEP |
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181 | # if _POSIX_C_SOURCE >= 199309L |
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182 | # define EV_USE_NANOSLEEP 1 |
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183 | # else |
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184 | # define EV_USE_NANOSLEEP 0 |
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185 | # endif |
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186 | #endif |
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187 | |
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188 | #ifndef EV_USE_SELECT |
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189 | # define EV_USE_SELECT 1 |
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190 | #endif |
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191 | |
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192 | #ifndef EV_USE_POLL |
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193 | # ifdef _WIN32 |
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194 | # define EV_USE_POLL 0 |
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195 | # else |
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196 | # define EV_USE_POLL 1 |
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197 | # endif |
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198 | #endif |
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199 | |
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200 | #ifndef EV_USE_EPOLL |
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201 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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202 | # define EV_USE_EPOLL 1 |
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203 | # else |
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204 | # define EV_USE_EPOLL 0 |
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205 | # endif |
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206 | #endif |
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207 | |
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208 | #ifndef EV_USE_KQUEUE |
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209 | # define EV_USE_KQUEUE 0 |
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210 | #endif |
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211 | |
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212 | #ifndef EV_USE_PORT |
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213 | # define EV_USE_PORT 0 |
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214 | #endif |
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215 | |
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216 | #ifndef EV_USE_INOTIFY |
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217 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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218 | # define EV_USE_INOTIFY 1 |
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219 | # else |
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220 | # define EV_USE_INOTIFY 0 |
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221 | # endif |
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222 | #endif |
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223 | |
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224 | #ifndef EV_PID_HASHSIZE |
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225 | # if EV_MINIMAL |
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226 | # define EV_PID_HASHSIZE 1 |
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227 | # else |
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228 | # define EV_PID_HASHSIZE 16 |
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229 | # endif |
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230 | #endif |
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231 | |
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232 | #ifndef EV_INOTIFY_HASHSIZE |
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233 | # if EV_MINIMAL |
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234 | # define EV_INOTIFY_HASHSIZE 1 |
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235 | # else |
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236 | # define EV_INOTIFY_HASHSIZE 16 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | #ifndef EV_USE_EVENTFD |
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241 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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242 | # define EV_USE_EVENTFD 1 |
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243 | # else |
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244 | # define EV_USE_EVENTFD 0 |
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245 | # endif |
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246 | #endif |
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247 | |
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248 | #if 0 /* debugging */ |
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249 | # define EV_VERIFY 3 |
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250 | # define EV_USE_4HEAP 1 |
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251 | # define EV_HEAP_CACHE_AT 1 |
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252 | #endif |
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253 | |
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254 | #ifndef EV_VERIFY |
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255 | # define EV_VERIFY !EV_MINIMAL |
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256 | #endif |
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257 | |
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258 | #ifndef EV_USE_4HEAP |
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259 | # define EV_USE_4HEAP !EV_MINIMAL |
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260 | #endif |
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261 | |
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262 | #ifndef EV_HEAP_CACHE_AT |
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263 | # define EV_HEAP_CACHE_AT !EV_MINIMAL |
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264 | #endif |
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265 | |
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266 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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267 | |
14 | #ifdef CLOCK_MONOTONIC |
268 | #ifndef CLOCK_MONOTONIC |
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269 | # undef EV_USE_MONOTONIC |
15 | # define HAVE_MONOTONIC 1 |
270 | # define EV_USE_MONOTONIC 0 |
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271 | #endif |
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272 | |
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273 | #ifndef CLOCK_REALTIME |
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274 | # undef EV_USE_REALTIME |
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275 | # define EV_USE_REALTIME 0 |
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276 | #endif |
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277 | |
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278 | #if !EV_STAT_ENABLE |
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279 | # undef EV_USE_INOTIFY |
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280 | # define EV_USE_INOTIFY 0 |
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281 | #endif |
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282 | |
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283 | #if !EV_USE_NANOSLEEP |
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284 | # ifndef _WIN32 |
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285 | # include <sys/select.h> |
16 | #endif |
286 | # endif |
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287 | #endif |
17 | |
288 | |
18 | #define HAVE_REALTIME 1 |
289 | #if EV_USE_INOTIFY |
19 | #define HAVE_EPOLL 1 |
290 | # include <sys/inotify.h> |
20 | #define HAVE_SELECT 1 |
291 | #endif |
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292 | |
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293 | #if EV_SELECT_IS_WINSOCKET |
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294 | # include <winsock.h> |
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295 | #endif |
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296 | |
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297 | #if EV_USE_EVENTFD |
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298 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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299 | # include <stdint.h> |
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300 | # ifdef __cplusplus |
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301 | extern "C" { |
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302 | # endif |
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303 | int eventfd (unsigned int initval, int flags); |
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304 | # ifdef __cplusplus |
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305 | } |
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306 | # endif |
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307 | #endif |
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308 | |
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309 | /**/ |
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310 | |
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311 | #if EV_VERIFY >= 3 |
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312 | # define EV_FREQUENT_CHECK ev_loop_verify (EV_A) |
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313 | #else |
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314 | # define EV_FREQUENT_CHECK do { } while (0) |
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315 | #endif |
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316 | |
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317 | /* |
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318 | * This is used to avoid floating point rounding problems. |
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319 | * It is added to ev_rt_now when scheduling periodics |
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320 | * to ensure progress, time-wise, even when rounding |
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321 | * errors are against us. |
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322 | * This value is good at least till the year 4000. |
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323 | * Better solutions welcome. |
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324 | */ |
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325 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
21 | |
326 | |
22 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
327 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
23 | #define MAX_BLOCKTIME 60. |
328 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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329 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
24 | |
330 | |
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331 | #if __GNUC__ >= 4 |
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332 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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333 | # define noinline __attribute__ ((noinline)) |
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334 | #else |
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335 | # define expect(expr,value) (expr) |
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336 | # define noinline |
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337 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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338 | # define inline |
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339 | # endif |
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340 | #endif |
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341 | |
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342 | #define expect_false(expr) expect ((expr) != 0, 0) |
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343 | #define expect_true(expr) expect ((expr) != 0, 1) |
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344 | #define inline_size static inline |
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345 | |
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346 | #if EV_MINIMAL |
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347 | # define inline_speed static noinline |
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348 | #else |
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349 | # define inline_speed static inline |
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350 | #endif |
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351 | |
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352 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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353 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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354 | |
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355 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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356 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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357 | |
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358 | typedef ev_watcher *W; |
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359 | typedef ev_watcher_list *WL; |
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360 | typedef ev_watcher_time *WT; |
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361 | |
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362 | #define ev_active(w) ((W)(w))->active |
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363 | #define ev_at(w) ((WT)(w))->at |
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364 | |
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365 | #if EV_USE_MONOTONIC |
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366 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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367 | /* giving it a reasonably high chance of working on typical architetcures */ |
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368 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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369 | #endif |
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370 | |
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371 | #ifdef _WIN32 |
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372 | # include "ev_win32.c" |
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373 | #endif |
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374 | |
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375 | /*****************************************************************************/ |
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376 | |
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377 | static void (*syserr_cb)(const char *msg); |
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378 | |
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379 | void |
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380 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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381 | { |
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382 | syserr_cb = cb; |
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383 | } |
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384 | |
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385 | static void noinline |
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386 | syserr (const char *msg) |
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387 | { |
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388 | if (!msg) |
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389 | msg = "(libev) system error"; |
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390 | |
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391 | if (syserr_cb) |
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392 | syserr_cb (msg); |
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393 | else |
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394 | { |
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395 | perror (msg); |
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396 | abort (); |
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397 | } |
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398 | } |
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399 | |
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400 | static void * |
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401 | ev_realloc_emul (void *ptr, long size) |
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402 | { |
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403 | /* some systems, notably openbsd and darwin, fail to properly |
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404 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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405 | * the single unix specification, so work around them here. |
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406 | */ |
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407 | |
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408 | if (size) |
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409 | return realloc (ptr, size); |
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410 | |
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411 | free (ptr); |
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412 | return 0; |
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413 | } |
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414 | |
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415 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
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416 | |
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417 | void |
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418 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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419 | { |
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420 | alloc = cb; |
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421 | } |
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422 | |
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423 | inline_speed void * |
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424 | ev_realloc (void *ptr, long size) |
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425 | { |
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426 | ptr = alloc (ptr, size); |
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427 | |
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428 | if (!ptr && size) |
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429 | { |
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430 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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431 | abort (); |
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432 | } |
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433 | |
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434 | return ptr; |
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435 | } |
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436 | |
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437 | #define ev_malloc(size) ev_realloc (0, (size)) |
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438 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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439 | |
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440 | /*****************************************************************************/ |
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441 | |
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442 | typedef struct |
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443 | { |
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444 | WL head; |
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445 | unsigned char events; |
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446 | unsigned char reify; |
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447 | #if EV_SELECT_IS_WINSOCKET |
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448 | SOCKET handle; |
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449 | #endif |
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450 | } ANFD; |
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451 | |
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452 | typedef struct |
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453 | { |
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454 | W w; |
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455 | int events; |
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|
456 | } ANPENDING; |
|
|
457 | |
|
|
458 | #if EV_USE_INOTIFY |
|
|
459 | /* hash table entry per inotify-id */ |
|
|
460 | typedef struct |
|
|
461 | { |
|
|
462 | WL head; |
|
|
463 | } ANFS; |
|
|
464 | #endif |
|
|
465 | |
|
|
466 | /* Heap Entry */ |
|
|
467 | #if EV_HEAP_CACHE_AT |
|
|
468 | typedef struct { |
|
|
469 | ev_tstamp at; |
|
|
470 | WT w; |
|
|
471 | } ANHE; |
|
|
472 | |
|
|
473 | #define ANHE_w(he) (he).w /* access watcher, read-write */ |
|
|
474 | #define ANHE_at(he) (he).at /* access cached at, read-only */ |
|
|
475 | #define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */ |
|
|
476 | #else |
|
|
477 | typedef WT ANHE; |
|
|
478 | |
|
|
479 | #define ANHE_w(he) (he) |
|
|
480 | #define ANHE_at(he) (he)->at |
|
|
481 | #define ANHE_at_cache(he) |
|
|
482 | #endif |
|
|
483 | |
|
|
484 | #if EV_MULTIPLICITY |
|
|
485 | |
|
|
486 | struct ev_loop |
|
|
487 | { |
|
|
488 | ev_tstamp ev_rt_now; |
|
|
489 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
490 | #define VAR(name,decl) decl; |
|
|
491 | #include "ev_vars.h" |
|
|
492 | #undef VAR |
|
|
493 | }; |
25 | #include "ev.h" |
494 | #include "ev_wrap.h" |
26 | |
495 | |
27 | struct ev_watcher { |
496 | static struct ev_loop default_loop_struct; |
28 | EV_WATCHER (ev_watcher); |
497 | struct ev_loop *ev_default_loop_ptr; |
29 | }; |
|
|
30 | |
498 | |
31 | struct ev_watcher_list { |
499 | #else |
32 | EV_WATCHER_LIST (ev_watcher_list); |
|
|
33 | }; |
|
|
34 | |
500 | |
35 | static ev_tstamp now, diff; /* monotonic clock */ |
|
|
36 | ev_tstamp ev_now; |
501 | ev_tstamp ev_rt_now; |
37 | int ev_method; |
502 | #define VAR(name,decl) static decl; |
|
|
503 | #include "ev_vars.h" |
|
|
504 | #undef VAR |
38 | |
505 | |
39 | static int have_monotonic; /* runtime */ |
506 | static int ev_default_loop_ptr; |
40 | |
507 | |
41 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
508 | #endif |
42 | static void (*method_modify)(int fd, int oev, int nev); |
|
|
43 | static void (*method_poll)(ev_tstamp timeout); |
|
|
44 | |
509 | |
45 | /*****************************************************************************/ |
510 | /*****************************************************************************/ |
46 | |
511 | |
47 | ev_tstamp |
512 | ev_tstamp |
48 | ev_time (void) |
513 | ev_time (void) |
49 | { |
514 | { |
50 | #if HAVE_REALTIME |
515 | #if EV_USE_REALTIME |
51 | struct timespec ts; |
516 | struct timespec ts; |
52 | clock_gettime (CLOCK_REALTIME, &ts); |
517 | clock_gettime (CLOCK_REALTIME, &ts); |
53 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
518 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
54 | #else |
519 | #else |
55 | struct timeval tv; |
520 | struct timeval tv; |
56 | gettimeofday (&tv, 0); |
521 | gettimeofday (&tv, 0); |
57 | return tv.tv_sec + tv.tv_usec * 1e-6; |
522 | return tv.tv_sec + tv.tv_usec * 1e-6; |
58 | #endif |
523 | #endif |
59 | } |
524 | } |
60 | |
525 | |
61 | static ev_tstamp |
526 | ev_tstamp inline_size |
62 | get_clock (void) |
527 | get_clock (void) |
63 | { |
528 | { |
64 | #if HAVE_MONOTONIC |
529 | #if EV_USE_MONOTONIC |
65 | if (have_monotonic) |
530 | if (expect_true (have_monotonic)) |
66 | { |
531 | { |
67 | struct timespec ts; |
532 | struct timespec ts; |
68 | clock_gettime (CLOCK_MONOTONIC, &ts); |
533 | clock_gettime (CLOCK_MONOTONIC, &ts); |
69 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
534 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
70 | } |
535 | } |
71 | #endif |
536 | #endif |
72 | |
537 | |
73 | return ev_time (); |
538 | return ev_time (); |
74 | } |
539 | } |
75 | |
540 | |
76 | #define array_needsize(base,cur,cnt,init) \ |
541 | #if EV_MULTIPLICITY |
77 | if ((cnt) > cur) \ |
542 | ev_tstamp |
78 | { \ |
543 | ev_now (EV_P) |
79 | int newcnt = cur ? cur << 1 : 16; \ |
544 | { |
80 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
545 | return ev_rt_now; |
81 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
546 | } |
82 | init (base + cur, newcnt - cur); \ |
547 | #endif |
83 | cur = newcnt; \ |
548 | |
|
|
549 | void |
|
|
550 | ev_sleep (ev_tstamp delay) |
|
|
551 | { |
|
|
552 | if (delay > 0.) |
84 | } |
553 | { |
|
|
554 | #if EV_USE_NANOSLEEP |
|
|
555 | struct timespec ts; |
|
|
556 | |
|
|
557 | ts.tv_sec = (time_t)delay; |
|
|
558 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
559 | |
|
|
560 | nanosleep (&ts, 0); |
|
|
561 | #elif defined(_WIN32) |
|
|
562 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
563 | #else |
|
|
564 | struct timeval tv; |
|
|
565 | |
|
|
566 | tv.tv_sec = (time_t)delay; |
|
|
567 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
568 | |
|
|
569 | select (0, 0, 0, 0, &tv); |
|
|
570 | #endif |
|
|
571 | } |
|
|
572 | } |
85 | |
573 | |
86 | /*****************************************************************************/ |
574 | /*****************************************************************************/ |
87 | |
575 | |
|
|
576 | #define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
|
|
577 | |
|
|
578 | int inline_size |
|
|
579 | array_nextsize (int elem, int cur, int cnt) |
|
|
580 | { |
|
|
581 | int ncur = cur + 1; |
|
|
582 | |
|
|
583 | do |
|
|
584 | ncur <<= 1; |
|
|
585 | while (cnt > ncur); |
|
|
586 | |
|
|
587 | /* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
|
|
588 | if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
|
|
589 | { |
|
|
590 | ncur *= elem; |
|
|
591 | ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
|
|
592 | ncur = ncur - sizeof (void *) * 4; |
|
|
593 | ncur /= elem; |
|
|
594 | } |
|
|
595 | |
|
|
596 | return ncur; |
|
|
597 | } |
|
|
598 | |
|
|
599 | static noinline void * |
|
|
600 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
601 | { |
|
|
602 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
603 | return ev_realloc (base, elem * *cur); |
|
|
604 | } |
|
|
605 | |
|
|
606 | #define array_needsize(type,base,cur,cnt,init) \ |
|
|
607 | if (expect_false ((cnt) > (cur))) \ |
|
|
608 | { \ |
|
|
609 | int ocur_ = (cur); \ |
|
|
610 | (base) = (type *)array_realloc \ |
|
|
611 | (sizeof (type), (base), &(cur), (cnt)); \ |
|
|
612 | init ((base) + (ocur_), (cur) - ocur_); \ |
|
|
613 | } |
|
|
614 | |
|
|
615 | #if 0 |
|
|
616 | #define array_slim(type,stem) \ |
|
|
617 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
618 | { \ |
|
|
619 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
620 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
621 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
622 | } |
|
|
623 | #endif |
|
|
624 | |
|
|
625 | #define array_free(stem, idx) \ |
|
|
626 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
627 | |
|
|
628 | /*****************************************************************************/ |
|
|
629 | |
|
|
630 | void noinline |
|
|
631 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
632 | { |
|
|
633 | W w_ = (W)w; |
|
|
634 | int pri = ABSPRI (w_); |
|
|
635 | |
|
|
636 | if (expect_false (w_->pending)) |
|
|
637 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
638 | else |
|
|
639 | { |
|
|
640 | w_->pending = ++pendingcnt [pri]; |
|
|
641 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
642 | pendings [pri][w_->pending - 1].w = w_; |
|
|
643 | pendings [pri][w_->pending - 1].events = revents; |
|
|
644 | } |
|
|
645 | } |
|
|
646 | |
|
|
647 | void inline_speed |
|
|
648 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
649 | { |
|
|
650 | int i; |
|
|
651 | |
|
|
652 | for (i = 0; i < eventcnt; ++i) |
|
|
653 | ev_feed_event (EV_A_ events [i], type); |
|
|
654 | } |
|
|
655 | |
|
|
656 | /*****************************************************************************/ |
|
|
657 | |
|
|
658 | void inline_size |
|
|
659 | anfds_init (ANFD *base, int count) |
|
|
660 | { |
|
|
661 | while (count--) |
|
|
662 | { |
|
|
663 | base->head = 0; |
|
|
664 | base->events = EV_NONE; |
|
|
665 | base->reify = 0; |
|
|
666 | |
|
|
667 | ++base; |
|
|
668 | } |
|
|
669 | } |
|
|
670 | |
|
|
671 | void inline_speed |
|
|
672 | fd_event (EV_P_ int fd, int revents) |
|
|
673 | { |
|
|
674 | ANFD *anfd = anfds + fd; |
|
|
675 | ev_io *w; |
|
|
676 | |
|
|
677 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
678 | { |
|
|
679 | int ev = w->events & revents; |
|
|
680 | |
|
|
681 | if (ev) |
|
|
682 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
683 | } |
|
|
684 | } |
|
|
685 | |
|
|
686 | void |
|
|
687 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
688 | { |
|
|
689 | if (fd >= 0 && fd < anfdmax) |
|
|
690 | fd_event (EV_A_ fd, revents); |
|
|
691 | } |
|
|
692 | |
|
|
693 | void inline_size |
|
|
694 | fd_reify (EV_P) |
|
|
695 | { |
|
|
696 | int i; |
|
|
697 | |
|
|
698 | for (i = 0; i < fdchangecnt; ++i) |
|
|
699 | { |
|
|
700 | int fd = fdchanges [i]; |
|
|
701 | ANFD *anfd = anfds + fd; |
|
|
702 | ev_io *w; |
|
|
703 | |
|
|
704 | unsigned char events = 0; |
|
|
705 | |
|
|
706 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
707 | events |= (unsigned char)w->events; |
|
|
708 | |
|
|
709 | #if EV_SELECT_IS_WINSOCKET |
|
|
710 | if (events) |
|
|
711 | { |
|
|
712 | unsigned long argp; |
|
|
713 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
714 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
715 | #else |
|
|
716 | anfd->handle = _get_osfhandle (fd); |
|
|
717 | #endif |
|
|
718 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
719 | } |
|
|
720 | #endif |
|
|
721 | |
|
|
722 | { |
|
|
723 | unsigned char o_events = anfd->events; |
|
|
724 | unsigned char o_reify = anfd->reify; |
|
|
725 | |
|
|
726 | anfd->reify = 0; |
|
|
727 | anfd->events = events; |
|
|
728 | |
|
|
729 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
730 | backend_modify (EV_A_ fd, o_events, events); |
|
|
731 | } |
|
|
732 | } |
|
|
733 | |
|
|
734 | fdchangecnt = 0; |
|
|
735 | } |
|
|
736 | |
|
|
737 | void inline_size |
|
|
738 | fd_change (EV_P_ int fd, int flags) |
|
|
739 | { |
|
|
740 | unsigned char reify = anfds [fd].reify; |
|
|
741 | anfds [fd].reify |= flags; |
|
|
742 | |
|
|
743 | if (expect_true (!reify)) |
|
|
744 | { |
|
|
745 | ++fdchangecnt; |
|
|
746 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
747 | fdchanges [fdchangecnt - 1] = fd; |
|
|
748 | } |
|
|
749 | } |
|
|
750 | |
|
|
751 | void inline_speed |
|
|
752 | fd_kill (EV_P_ int fd) |
|
|
753 | { |
|
|
754 | ev_io *w; |
|
|
755 | |
|
|
756 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
757 | { |
|
|
758 | ev_io_stop (EV_A_ w); |
|
|
759 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
760 | } |
|
|
761 | } |
|
|
762 | |
|
|
763 | int inline_size |
|
|
764 | fd_valid (int fd) |
|
|
765 | { |
|
|
766 | #ifdef _WIN32 |
|
|
767 | return _get_osfhandle (fd) != -1; |
|
|
768 | #else |
|
|
769 | return fcntl (fd, F_GETFD) != -1; |
|
|
770 | #endif |
|
|
771 | } |
|
|
772 | |
|
|
773 | /* called on EBADF to verify fds */ |
|
|
774 | static void noinline |
|
|
775 | fd_ebadf (EV_P) |
|
|
776 | { |
|
|
777 | int fd; |
|
|
778 | |
|
|
779 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
780 | if (anfds [fd].events) |
|
|
781 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
782 | fd_kill (EV_A_ fd); |
|
|
783 | } |
|
|
784 | |
|
|
785 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
786 | static void noinline |
|
|
787 | fd_enomem (EV_P) |
|
|
788 | { |
|
|
789 | int fd; |
|
|
790 | |
|
|
791 | for (fd = anfdmax; fd--; ) |
|
|
792 | if (anfds [fd].events) |
|
|
793 | { |
|
|
794 | fd_kill (EV_A_ fd); |
|
|
795 | return; |
|
|
796 | } |
|
|
797 | } |
|
|
798 | |
|
|
799 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
800 | static void noinline |
|
|
801 | fd_rearm_all (EV_P) |
|
|
802 | { |
|
|
803 | int fd; |
|
|
804 | |
|
|
805 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
806 | if (anfds [fd].events) |
|
|
807 | { |
|
|
808 | anfds [fd].events = 0; |
|
|
809 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
810 | } |
|
|
811 | } |
|
|
812 | |
|
|
813 | /*****************************************************************************/ |
|
|
814 | |
|
|
815 | /* |
|
|
816 | * the heap functions want a real array index. array index 0 uis guaranteed to not |
|
|
817 | * be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
|
|
818 | * the branching factor of the d-tree. |
|
|
819 | */ |
|
|
820 | |
|
|
821 | /* |
|
|
822 | * at the moment we allow libev the luxury of two heaps, |
|
|
823 | * a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
|
|
824 | * which is more cache-efficient. |
|
|
825 | * the difference is about 5% with 50000+ watchers. |
|
|
826 | */ |
|
|
827 | #if EV_USE_4HEAP |
|
|
828 | |
|
|
829 | #define DHEAP 4 |
|
|
830 | #define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
|
|
831 | #define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0) |
|
|
832 | #define UPHEAP_DONE(p,k) ((p) == (k)) |
|
|
833 | |
|
|
834 | /* away from the root */ |
|
|
835 | void inline_speed |
|
|
836 | downheap (ANHE *heap, int N, int k) |
|
|
837 | { |
|
|
838 | ANHE he = heap [k]; |
|
|
839 | ANHE *E = heap + N + HEAP0; |
|
|
840 | |
|
|
841 | for (;;) |
|
|
842 | { |
|
|
843 | ev_tstamp minat; |
|
|
844 | ANHE *minpos; |
|
|
845 | ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1; |
|
|
846 | |
|
|
847 | /* find minimum child */ |
|
|
848 | if (expect_true (pos + DHEAP - 1 < E)) |
|
|
849 | { |
|
|
850 | /* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
851 | if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
852 | if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
853 | if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
854 | } |
|
|
855 | else if (pos < E) |
|
|
856 | { |
|
|
857 | /* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
|
|
858 | if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
|
|
859 | if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
|
|
860 | if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
|
|
861 | } |
|
|
862 | else |
|
|
863 | break; |
|
|
864 | |
|
|
865 | if (ANHE_at (he) <= minat) |
|
|
866 | break; |
|
|
867 | |
|
|
868 | heap [k] = *minpos; |
|
|
869 | ev_active (ANHE_w (*minpos)) = k; |
|
|
870 | |
|
|
871 | k = minpos - heap; |
|
|
872 | } |
|
|
873 | |
|
|
874 | heap [k] = he; |
|
|
875 | ev_active (ANHE_w (he)) = k; |
|
|
876 | } |
|
|
877 | |
|
|
878 | #else /* 4HEAP */ |
|
|
879 | |
|
|
880 | #define HEAP0 1 |
|
|
881 | #define HPARENT(k) ((k) >> 1) |
|
|
882 | #define UPHEAP_DONE(p,k) (!(p)) |
|
|
883 | |
|
|
884 | /* away from the root */ |
|
|
885 | void inline_speed |
|
|
886 | downheap (ANHE *heap, int N, int k) |
|
|
887 | { |
|
|
888 | ANHE he = heap [k]; |
|
|
889 | |
|
|
890 | for (;;) |
|
|
891 | { |
|
|
892 | int c = k << 1; |
|
|
893 | |
|
|
894 | if (c > N + HEAP0 - 1) |
|
|
895 | break; |
|
|
896 | |
|
|
897 | c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
|
|
898 | ? 1 : 0; |
|
|
899 | |
|
|
900 | if (ANHE_at (he) <= ANHE_at (heap [c])) |
|
|
901 | break; |
|
|
902 | |
|
|
903 | heap [k] = heap [c]; |
|
|
904 | ev_active (ANHE_w (heap [k])) = k; |
|
|
905 | |
|
|
906 | k = c; |
|
|
907 | } |
|
|
908 | |
|
|
909 | heap [k] = he; |
|
|
910 | ev_active (ANHE_w (he)) = k; |
|
|
911 | } |
|
|
912 | #endif |
|
|
913 | |
|
|
914 | /* towards the root */ |
|
|
915 | void inline_speed |
|
|
916 | upheap (ANHE *heap, int k) |
|
|
917 | { |
|
|
918 | ANHE he = heap [k]; |
|
|
919 | |
|
|
920 | for (;;) |
|
|
921 | { |
|
|
922 | int p = HPARENT (k); |
|
|
923 | |
|
|
924 | if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he)) |
|
|
925 | break; |
|
|
926 | |
|
|
927 | heap [k] = heap [p]; |
|
|
928 | ev_active (ANHE_w (heap [k])) = k; |
|
|
929 | k = p; |
|
|
930 | } |
|
|
931 | |
|
|
932 | heap [k] = he; |
|
|
933 | ev_active (ANHE_w (he)) = k; |
|
|
934 | } |
|
|
935 | |
|
|
936 | void inline_size |
|
|
937 | adjustheap (ANHE *heap, int N, int k) |
|
|
938 | { |
|
|
939 | if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k])) |
|
|
940 | upheap (heap, k); |
|
|
941 | else |
|
|
942 | downheap (heap, N, k); |
|
|
943 | } |
|
|
944 | |
|
|
945 | /* rebuild the heap: this function is used only once and executed rarely */ |
|
|
946 | void inline_size |
|
|
947 | reheap (ANHE *heap, int N) |
|
|
948 | { |
|
|
949 | int i; |
|
|
950 | |
|
|
951 | /* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */ |
|
|
952 | /* also, this is easy to implement and correct for both 2-heaps and 4-heaps */ |
|
|
953 | for (i = 0; i < N; ++i) |
|
|
954 | upheap (heap, i + HEAP0); |
|
|
955 | } |
|
|
956 | |
|
|
957 | /*****************************************************************************/ |
|
|
958 | |
88 | typedef struct |
959 | typedef struct |
89 | { |
960 | { |
90 | struct ev_io *head; |
961 | WL head; |
91 | unsigned char wev, rev; /* want, received event set */ |
962 | EV_ATOMIC_T gotsig; |
92 | } ANFD; |
|
|
93 | |
|
|
94 | static ANFD *anfds; |
|
|
95 | static int anfdmax; |
|
|
96 | |
|
|
97 | static int *fdchanges; |
|
|
98 | static int fdchangemax, fdchangecnt; |
|
|
99 | |
|
|
100 | static void |
|
|
101 | anfds_init (ANFD *base, int count) |
|
|
102 | { |
|
|
103 | while (count--) |
|
|
104 | { |
|
|
105 | base->head = 0; |
|
|
106 | base->wev = base->rev = EV_NONE; |
|
|
107 | ++base; |
|
|
108 | } |
|
|
109 | } |
|
|
110 | |
|
|
111 | typedef struct |
|
|
112 | { |
|
|
113 | struct ev_watcher *w; |
|
|
114 | int events; |
|
|
115 | } ANPENDING; |
|
|
116 | |
|
|
117 | static ANPENDING *pendings; |
|
|
118 | static int pendingmax, pendingcnt; |
|
|
119 | |
|
|
120 | static void |
|
|
121 | event (struct ev_watcher *w, int events) |
|
|
122 | { |
|
|
123 | w->pending = ++pendingcnt; |
|
|
124 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
125 | pendings [pendingcnt - 1].w = w; |
|
|
126 | pendings [pendingcnt - 1].events = events; |
|
|
127 | } |
|
|
128 | |
|
|
129 | static void |
|
|
130 | fd_event (int fd, int events) |
|
|
131 | { |
|
|
132 | ANFD *anfd = anfds + fd; |
|
|
133 | struct ev_io *w; |
|
|
134 | |
|
|
135 | for (w = anfd->head; w; w = w->next) |
|
|
136 | { |
|
|
137 | int ev = w->events & events; |
|
|
138 | |
|
|
139 | if (ev) |
|
|
140 | event ((struct ev_watcher *)w, ev); |
|
|
141 | } |
|
|
142 | } |
|
|
143 | |
|
|
144 | /*****************************************************************************/ |
|
|
145 | |
|
|
146 | static struct ev_timer **atimers; |
|
|
147 | static int atimermax, atimercnt; |
|
|
148 | |
|
|
149 | static struct ev_timer **rtimers; |
|
|
150 | static int rtimermax, rtimercnt; |
|
|
151 | |
|
|
152 | static void |
|
|
153 | upheap (struct ev_timer **timers, int k) |
|
|
154 | { |
|
|
155 | struct ev_timer *w = timers [k]; |
|
|
156 | |
|
|
157 | while (k && timers [k >> 1]->at > w->at) |
|
|
158 | { |
|
|
159 | timers [k] = timers [k >> 1]; |
|
|
160 | timers [k]->active = k + 1; |
|
|
161 | k >>= 1; |
|
|
162 | } |
|
|
163 | |
|
|
164 | timers [k] = w; |
|
|
165 | timers [k]->active = k + 1; |
|
|
166 | |
|
|
167 | } |
|
|
168 | |
|
|
169 | static void |
|
|
170 | downheap (struct ev_timer **timers, int N, int k) |
|
|
171 | { |
|
|
172 | struct ev_timer *w = timers [k]; |
|
|
173 | |
|
|
174 | while (k < (N >> 1)) |
|
|
175 | { |
|
|
176 | int j = k << 1; |
|
|
177 | |
|
|
178 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
179 | ++j; |
|
|
180 | |
|
|
181 | if (w->at <= timers [j]->at) |
|
|
182 | break; |
|
|
183 | |
|
|
184 | timers [k] = timers [j]; |
|
|
185 | timers [k]->active = k + 1; |
|
|
186 | k = j; |
|
|
187 | } |
|
|
188 | |
|
|
189 | timers [k] = w; |
|
|
190 | timers [k]->active = k + 1; |
|
|
191 | } |
|
|
192 | |
|
|
193 | /*****************************************************************************/ |
|
|
194 | |
|
|
195 | typedef struct |
|
|
196 | { |
|
|
197 | struct ev_signal *head; |
|
|
198 | sig_atomic_t gotsig; |
|
|
199 | } ANSIG; |
963 | } ANSIG; |
200 | |
964 | |
201 | static ANSIG *signals; |
965 | static ANSIG *signals; |
202 | static int signalmax; |
966 | static int signalmax; |
203 | |
967 | |
204 | static int sigpipe [2]; |
968 | static EV_ATOMIC_T gotsig; |
205 | static sig_atomic_t gotsig; |
|
|
206 | static struct ev_io sigev; |
|
|
207 | |
969 | |
208 | static void |
970 | void inline_size |
209 | signals_init (ANSIG *base, int count) |
971 | signals_init (ANSIG *base, int count) |
210 | { |
972 | { |
211 | while (count--) |
973 | while (count--) |
212 | { |
974 | { |
213 | base->head = 0; |
975 | base->head = 0; |
214 | base->gotsig = 0; |
976 | base->gotsig = 0; |
|
|
977 | |
215 | ++base; |
978 | ++base; |
216 | } |
979 | } |
217 | } |
980 | } |
218 | |
981 | |
|
|
982 | /*****************************************************************************/ |
|
|
983 | |
|
|
984 | void inline_speed |
|
|
985 | fd_intern (int fd) |
|
|
986 | { |
|
|
987 | #ifdef _WIN32 |
|
|
988 | int arg = 1; |
|
|
989 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
990 | #else |
|
|
991 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
992 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
993 | #endif |
|
|
994 | } |
|
|
995 | |
|
|
996 | static void noinline |
|
|
997 | evpipe_init (EV_P) |
|
|
998 | { |
|
|
999 | if (!ev_is_active (&pipeev)) |
|
|
1000 | { |
|
|
1001 | #if EV_USE_EVENTFD |
|
|
1002 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
1003 | { |
|
|
1004 | evpipe [0] = -1; |
|
|
1005 | fd_intern (evfd); |
|
|
1006 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
1007 | } |
|
|
1008 | else |
|
|
1009 | #endif |
|
|
1010 | { |
|
|
1011 | while (pipe (evpipe)) |
|
|
1012 | syserr ("(libev) error creating signal/async pipe"); |
|
|
1013 | |
|
|
1014 | fd_intern (evpipe [0]); |
|
|
1015 | fd_intern (evpipe [1]); |
|
|
1016 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
1017 | } |
|
|
1018 | |
|
|
1019 | ev_io_start (EV_A_ &pipeev); |
|
|
1020 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
1021 | } |
|
|
1022 | } |
|
|
1023 | |
|
|
1024 | void inline_size |
|
|
1025 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
1026 | { |
|
|
1027 | if (!*flag) |
|
|
1028 | { |
|
|
1029 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
1030 | |
|
|
1031 | *flag = 1; |
|
|
1032 | |
|
|
1033 | #if EV_USE_EVENTFD |
|
|
1034 | if (evfd >= 0) |
|
|
1035 | { |
|
|
1036 | uint64_t counter = 1; |
|
|
1037 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
1038 | } |
|
|
1039 | else |
|
|
1040 | #endif |
|
|
1041 | write (evpipe [1], &old_errno, 1); |
|
|
1042 | |
|
|
1043 | errno = old_errno; |
|
|
1044 | } |
|
|
1045 | } |
|
|
1046 | |
219 | static void |
1047 | static void |
|
|
1048 | pipecb (EV_P_ ev_io *iow, int revents) |
|
|
1049 | { |
|
|
1050 | #if EV_USE_EVENTFD |
|
|
1051 | if (evfd >= 0) |
|
|
1052 | { |
|
|
1053 | uint64_t counter; |
|
|
1054 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
1055 | } |
|
|
1056 | else |
|
|
1057 | #endif |
|
|
1058 | { |
|
|
1059 | char dummy; |
|
|
1060 | read (evpipe [0], &dummy, 1); |
|
|
1061 | } |
|
|
1062 | |
|
|
1063 | if (gotsig && ev_is_default_loop (EV_A)) |
|
|
1064 | { |
|
|
1065 | int signum; |
|
|
1066 | gotsig = 0; |
|
|
1067 | |
|
|
1068 | for (signum = signalmax; signum--; ) |
|
|
1069 | if (signals [signum].gotsig) |
|
|
1070 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
1071 | } |
|
|
1072 | |
|
|
1073 | #if EV_ASYNC_ENABLE |
|
|
1074 | if (gotasync) |
|
|
1075 | { |
|
|
1076 | int i; |
|
|
1077 | gotasync = 0; |
|
|
1078 | |
|
|
1079 | for (i = asynccnt; i--; ) |
|
|
1080 | if (asyncs [i]->sent) |
|
|
1081 | { |
|
|
1082 | asyncs [i]->sent = 0; |
|
|
1083 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
1084 | } |
|
|
1085 | } |
|
|
1086 | #endif |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | /*****************************************************************************/ |
|
|
1090 | |
|
|
1091 | static void |
220 | sighandler (int signum) |
1092 | ev_sighandler (int signum) |
221 | { |
1093 | { |
|
|
1094 | #if EV_MULTIPLICITY |
|
|
1095 | struct ev_loop *loop = &default_loop_struct; |
|
|
1096 | #endif |
|
|
1097 | |
|
|
1098 | #if _WIN32 |
|
|
1099 | signal (signum, ev_sighandler); |
|
|
1100 | #endif |
|
|
1101 | |
222 | signals [signum - 1].gotsig = 1; |
1102 | signals [signum - 1].gotsig = 1; |
|
|
1103 | evpipe_write (EV_A_ &gotsig); |
|
|
1104 | } |
223 | |
1105 | |
224 | if (!gotsig) |
1106 | void noinline |
|
|
1107 | ev_feed_signal_event (EV_P_ int signum) |
|
|
1108 | { |
|
|
1109 | WL w; |
|
|
1110 | |
|
|
1111 | #if EV_MULTIPLICITY |
|
|
1112 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1113 | #endif |
|
|
1114 | |
|
|
1115 | --signum; |
|
|
1116 | |
|
|
1117 | if (signum < 0 || signum >= signalmax) |
|
|
1118 | return; |
|
|
1119 | |
|
|
1120 | signals [signum].gotsig = 0; |
|
|
1121 | |
|
|
1122 | for (w = signals [signum].head; w; w = w->next) |
|
|
1123 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
1124 | } |
|
|
1125 | |
|
|
1126 | /*****************************************************************************/ |
|
|
1127 | |
|
|
1128 | static WL childs [EV_PID_HASHSIZE]; |
|
|
1129 | |
|
|
1130 | #ifndef _WIN32 |
|
|
1131 | |
|
|
1132 | static ev_signal childev; |
|
|
1133 | |
|
|
1134 | #ifndef WIFCONTINUED |
|
|
1135 | # define WIFCONTINUED(status) 0 |
|
|
1136 | #endif |
|
|
1137 | |
|
|
1138 | void inline_speed |
|
|
1139 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
1140 | { |
|
|
1141 | ev_child *w; |
|
|
1142 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1143 | |
|
|
1144 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1145 | { |
|
|
1146 | if ((w->pid == pid || !w->pid) |
|
|
1147 | && (!traced || (w->flags & 1))) |
|
|
1148 | { |
|
|
1149 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1150 | w->rpid = pid; |
|
|
1151 | w->rstatus = status; |
|
|
1152 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1153 | } |
|
|
1154 | } |
|
|
1155 | } |
|
|
1156 | |
|
|
1157 | #ifndef WCONTINUED |
|
|
1158 | # define WCONTINUED 0 |
|
|
1159 | #endif |
|
|
1160 | |
|
|
1161 | static void |
|
|
1162 | childcb (EV_P_ ev_signal *sw, int revents) |
|
|
1163 | { |
|
|
1164 | int pid, status; |
|
|
1165 | |
|
|
1166 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
|
|
1167 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
|
|
1168 | if (!WCONTINUED |
|
|
1169 | || errno != EINVAL |
|
|
1170 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1171 | return; |
|
|
1172 | |
|
|
1173 | /* make sure we are called again until all children have been reaped */ |
|
|
1174 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
1175 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
1176 | |
|
|
1177 | child_reap (EV_A_ pid, pid, status); |
|
|
1178 | if (EV_PID_HASHSIZE > 1) |
|
|
1179 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
1180 | } |
|
|
1181 | |
|
|
1182 | #endif |
|
|
1183 | |
|
|
1184 | /*****************************************************************************/ |
|
|
1185 | |
|
|
1186 | #if EV_USE_PORT |
|
|
1187 | # include "ev_port.c" |
|
|
1188 | #endif |
|
|
1189 | #if EV_USE_KQUEUE |
|
|
1190 | # include "ev_kqueue.c" |
|
|
1191 | #endif |
|
|
1192 | #if EV_USE_EPOLL |
|
|
1193 | # include "ev_epoll.c" |
|
|
1194 | #endif |
|
|
1195 | #if EV_USE_POLL |
|
|
1196 | # include "ev_poll.c" |
|
|
1197 | #endif |
|
|
1198 | #if EV_USE_SELECT |
|
|
1199 | # include "ev_select.c" |
|
|
1200 | #endif |
|
|
1201 | |
|
|
1202 | int |
|
|
1203 | ev_version_major (void) |
|
|
1204 | { |
|
|
1205 | return EV_VERSION_MAJOR; |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | int |
|
|
1209 | ev_version_minor (void) |
|
|
1210 | { |
|
|
1211 | return EV_VERSION_MINOR; |
|
|
1212 | } |
|
|
1213 | |
|
|
1214 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1215 | int inline_size |
|
|
1216 | enable_secure (void) |
|
|
1217 | { |
|
|
1218 | #ifdef _WIN32 |
|
|
1219 | return 0; |
|
|
1220 | #else |
|
|
1221 | return getuid () != geteuid () |
|
|
1222 | || getgid () != getegid (); |
|
|
1223 | #endif |
|
|
1224 | } |
|
|
1225 | |
|
|
1226 | unsigned int |
|
|
1227 | ev_supported_backends (void) |
|
|
1228 | { |
|
|
1229 | unsigned int flags = 0; |
|
|
1230 | |
|
|
1231 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1232 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1233 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1234 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1235 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1236 | |
|
|
1237 | return flags; |
|
|
1238 | } |
|
|
1239 | |
|
|
1240 | unsigned int |
|
|
1241 | ev_recommended_backends (void) |
|
|
1242 | { |
|
|
1243 | unsigned int flags = ev_supported_backends (); |
|
|
1244 | |
|
|
1245 | #ifndef __NetBSD__ |
|
|
1246 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1247 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1248 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1249 | #endif |
|
|
1250 | #ifdef __APPLE__ |
|
|
1251 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1252 | flags &= ~EVBACKEND_POLL; |
|
|
1253 | #endif |
|
|
1254 | |
|
|
1255 | return flags; |
|
|
1256 | } |
|
|
1257 | |
|
|
1258 | unsigned int |
|
|
1259 | ev_embeddable_backends (void) |
|
|
1260 | { |
|
|
1261 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1262 | |
|
|
1263 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1264 | /* please fix it and tell me how to detect the fix */ |
|
|
1265 | flags &= ~EVBACKEND_EPOLL; |
|
|
1266 | |
|
|
1267 | return flags; |
|
|
1268 | } |
|
|
1269 | |
|
|
1270 | unsigned int |
|
|
1271 | ev_backend (EV_P) |
|
|
1272 | { |
|
|
1273 | return backend; |
|
|
1274 | } |
|
|
1275 | |
|
|
1276 | unsigned int |
|
|
1277 | ev_loop_count (EV_P) |
|
|
1278 | { |
|
|
1279 | return loop_count; |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | void |
|
|
1283 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1284 | { |
|
|
1285 | io_blocktime = interval; |
|
|
1286 | } |
|
|
1287 | |
|
|
1288 | void |
|
|
1289 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1290 | { |
|
|
1291 | timeout_blocktime = interval; |
|
|
1292 | } |
|
|
1293 | |
|
|
1294 | static void noinline |
|
|
1295 | loop_init (EV_P_ unsigned int flags) |
|
|
1296 | { |
|
|
1297 | if (!backend) |
|
|
1298 | { |
|
|
1299 | #if EV_USE_MONOTONIC |
225 | { |
1300 | { |
|
|
1301 | struct timespec ts; |
|
|
1302 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
1303 | have_monotonic = 1; |
|
|
1304 | } |
|
|
1305 | #endif |
|
|
1306 | |
|
|
1307 | ev_rt_now = ev_time (); |
|
|
1308 | mn_now = get_clock (); |
|
|
1309 | now_floor = mn_now; |
|
|
1310 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1311 | |
|
|
1312 | io_blocktime = 0.; |
|
|
1313 | timeout_blocktime = 0.; |
|
|
1314 | backend = 0; |
|
|
1315 | backend_fd = -1; |
|
|
1316 | gotasync = 0; |
|
|
1317 | #if EV_USE_INOTIFY |
|
|
1318 | fs_fd = -2; |
|
|
1319 | #endif |
|
|
1320 | |
|
|
1321 | /* pid check not overridable via env */ |
|
|
1322 | #ifndef _WIN32 |
|
|
1323 | if (flags & EVFLAG_FORKCHECK) |
|
|
1324 | curpid = getpid (); |
|
|
1325 | #endif |
|
|
1326 | |
|
|
1327 | if (!(flags & EVFLAG_NOENV) |
|
|
1328 | && !enable_secure () |
|
|
1329 | && getenv ("LIBEV_FLAGS")) |
|
|
1330 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1331 | |
|
|
1332 | if (!(flags & 0x0000ffffU)) |
|
|
1333 | flags |= ev_recommended_backends (); |
|
|
1334 | |
|
|
1335 | #if EV_USE_PORT |
|
|
1336 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1337 | #endif |
|
|
1338 | #if EV_USE_KQUEUE |
|
|
1339 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1340 | #endif |
|
|
1341 | #if EV_USE_EPOLL |
|
|
1342 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
1343 | #endif |
|
|
1344 | #if EV_USE_POLL |
|
|
1345 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1346 | #endif |
|
|
1347 | #if EV_USE_SELECT |
|
|
1348 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
1349 | #endif |
|
|
1350 | |
|
|
1351 | ev_init (&pipeev, pipecb); |
|
|
1352 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1353 | } |
|
|
1354 | } |
|
|
1355 | |
|
|
1356 | static void noinline |
|
|
1357 | loop_destroy (EV_P) |
|
|
1358 | { |
|
|
1359 | int i; |
|
|
1360 | |
|
|
1361 | if (ev_is_active (&pipeev)) |
|
|
1362 | { |
|
|
1363 | ev_ref (EV_A); /* signal watcher */ |
|
|
1364 | ev_io_stop (EV_A_ &pipeev); |
|
|
1365 | |
|
|
1366 | #if EV_USE_EVENTFD |
|
|
1367 | if (evfd >= 0) |
|
|
1368 | close (evfd); |
|
|
1369 | #endif |
|
|
1370 | |
|
|
1371 | if (evpipe [0] >= 0) |
|
|
1372 | { |
|
|
1373 | close (evpipe [0]); |
|
|
1374 | close (evpipe [1]); |
|
|
1375 | } |
|
|
1376 | } |
|
|
1377 | |
|
|
1378 | #if EV_USE_INOTIFY |
|
|
1379 | if (fs_fd >= 0) |
|
|
1380 | close (fs_fd); |
|
|
1381 | #endif |
|
|
1382 | |
|
|
1383 | if (backend_fd >= 0) |
|
|
1384 | close (backend_fd); |
|
|
1385 | |
|
|
1386 | #if EV_USE_PORT |
|
|
1387 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1388 | #endif |
|
|
1389 | #if EV_USE_KQUEUE |
|
|
1390 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1391 | #endif |
|
|
1392 | #if EV_USE_EPOLL |
|
|
1393 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1394 | #endif |
|
|
1395 | #if EV_USE_POLL |
|
|
1396 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1397 | #endif |
|
|
1398 | #if EV_USE_SELECT |
|
|
1399 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1400 | #endif |
|
|
1401 | |
|
|
1402 | for (i = NUMPRI; i--; ) |
|
|
1403 | { |
|
|
1404 | array_free (pending, [i]); |
|
|
1405 | #if EV_IDLE_ENABLE |
|
|
1406 | array_free (idle, [i]); |
|
|
1407 | #endif |
|
|
1408 | } |
|
|
1409 | |
|
|
1410 | ev_free (anfds); anfdmax = 0; |
|
|
1411 | |
|
|
1412 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1413 | array_free (fdchange, EMPTY); |
|
|
1414 | array_free (timer, EMPTY); |
|
|
1415 | #if EV_PERIODIC_ENABLE |
|
|
1416 | array_free (periodic, EMPTY); |
|
|
1417 | #endif |
|
|
1418 | #if EV_FORK_ENABLE |
|
|
1419 | array_free (fork, EMPTY); |
|
|
1420 | #endif |
|
|
1421 | array_free (prepare, EMPTY); |
|
|
1422 | array_free (check, EMPTY); |
|
|
1423 | #if EV_ASYNC_ENABLE |
|
|
1424 | array_free (async, EMPTY); |
|
|
1425 | #endif |
|
|
1426 | |
|
|
1427 | backend = 0; |
|
|
1428 | } |
|
|
1429 | |
|
|
1430 | #if EV_USE_INOTIFY |
|
|
1431 | void inline_size infy_fork (EV_P); |
|
|
1432 | #endif |
|
|
1433 | |
|
|
1434 | void inline_size |
|
|
1435 | loop_fork (EV_P) |
|
|
1436 | { |
|
|
1437 | #if EV_USE_PORT |
|
|
1438 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1439 | #endif |
|
|
1440 | #if EV_USE_KQUEUE |
|
|
1441 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1442 | #endif |
|
|
1443 | #if EV_USE_EPOLL |
|
|
1444 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1445 | #endif |
|
|
1446 | #if EV_USE_INOTIFY |
|
|
1447 | infy_fork (EV_A); |
|
|
1448 | #endif |
|
|
1449 | |
|
|
1450 | if (ev_is_active (&pipeev)) |
|
|
1451 | { |
|
|
1452 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1453 | /* while we modify the fd vars */ |
226 | gotsig = 1; |
1454 | gotsig = 1; |
227 | write (sigpipe [1], &gotsig, 1); |
1455 | #if EV_ASYNC_ENABLE |
228 | } |
1456 | gotasync = 1; |
229 | } |
1457 | #endif |
230 | |
1458 | |
231 | static void |
1459 | ev_ref (EV_A); |
232 | sigcb (struct ev_io *iow, int revents) |
1460 | ev_io_stop (EV_A_ &pipeev); |
|
|
1461 | |
|
|
1462 | #if EV_USE_EVENTFD |
|
|
1463 | if (evfd >= 0) |
|
|
1464 | close (evfd); |
|
|
1465 | #endif |
|
|
1466 | |
|
|
1467 | if (evpipe [0] >= 0) |
|
|
1468 | { |
|
|
1469 | close (evpipe [0]); |
|
|
1470 | close (evpipe [1]); |
|
|
1471 | } |
|
|
1472 | |
|
|
1473 | evpipe_init (EV_A); |
|
|
1474 | /* now iterate over everything, in case we missed something */ |
|
|
1475 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1476 | } |
|
|
1477 | |
|
|
1478 | postfork = 0; |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | #if EV_MULTIPLICITY |
|
|
1482 | |
|
|
1483 | struct ev_loop * |
|
|
1484 | ev_loop_new (unsigned int flags) |
233 | { |
1485 | { |
234 | struct ev_signal *w; |
1486 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1487 | |
|
|
1488 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1489 | |
|
|
1490 | loop_init (EV_A_ flags); |
|
|
1491 | |
|
|
1492 | if (ev_backend (EV_A)) |
|
|
1493 | return loop; |
|
|
1494 | |
|
|
1495 | return 0; |
|
|
1496 | } |
|
|
1497 | |
|
|
1498 | void |
|
|
1499 | ev_loop_destroy (EV_P) |
|
|
1500 | { |
|
|
1501 | loop_destroy (EV_A); |
|
|
1502 | ev_free (loop); |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | void |
|
|
1506 | ev_loop_fork (EV_P) |
|
|
1507 | { |
|
|
1508 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1509 | } |
|
|
1510 | |
|
|
1511 | #if EV_VERIFY |
|
|
1512 | void noinline |
|
|
1513 | verify_watcher (EV_P_ W w) |
|
|
1514 | { |
|
|
1515 | assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI)); |
|
|
1516 | |
|
|
1517 | if (w->pending) |
|
|
1518 | assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w)); |
|
|
1519 | } |
|
|
1520 | |
|
|
1521 | static void noinline |
|
|
1522 | verify_heap (EV_P_ ANHE *heap, int N) |
|
|
1523 | { |
235 | int sig; |
1524 | int i; |
236 | |
1525 | |
237 | gotsig = 0; |
1526 | for (i = HEAP0; i < N + HEAP0; ++i) |
238 | read (sigpipe [0], &revents, 1); |
1527 | { |
|
|
1528 | assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i)); |
|
|
1529 | assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i]))); |
|
|
1530 | assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i])))); |
239 | |
1531 | |
240 | for (sig = signalmax; sig--; ) |
1532 | verify_watcher (EV_A_ (W)ANHE_w (heap [i])); |
241 | if (signals [sig].gotsig) |
1533 | } |
|
|
1534 | } |
|
|
1535 | |
|
|
1536 | static void noinline |
|
|
1537 | array_verify (EV_P_ W *ws, int cnt) |
|
|
1538 | { |
|
|
1539 | while (cnt--) |
|
|
1540 | { |
|
|
1541 | assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1)); |
|
|
1542 | verify_watcher (EV_A_ ws [cnt]); |
|
|
1543 | } |
|
|
1544 | } |
|
|
1545 | #endif |
|
|
1546 | |
|
|
1547 | void |
|
|
1548 | ev_loop_verify (EV_P) |
|
|
1549 | { |
|
|
1550 | #if EV_VERIFY |
|
|
1551 | int i; |
|
|
1552 | WL w; |
|
|
1553 | |
|
|
1554 | assert (activecnt >= -1); |
|
|
1555 | |
|
|
1556 | assert (fdchangemax >= fdchangecnt); |
|
|
1557 | for (i = 0; i < fdchangecnt; ++i) |
|
|
1558 | assert (("negative fd in fdchanges", fdchanges [i] >= 0)); |
|
|
1559 | |
|
|
1560 | assert (anfdmax >= 0); |
|
|
1561 | for (i = 0; i < anfdmax; ++i) |
|
|
1562 | for (w = anfds [i].head; w; w = w->next) |
242 | { |
1563 | { |
243 | signals [sig].gotsig = 0; |
1564 | verify_watcher (EV_A_ (W)w); |
244 | |
1565 | assert (("inactive fd watcher on anfd list", ev_active (w) == 1)); |
245 | for (w = signals [sig].head; w; w = w->next) |
1566 | assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i)); |
246 | event ((struct ev_watcher *)w, EV_SIGNAL); |
|
|
247 | } |
1567 | } |
248 | } |
|
|
249 | |
1568 | |
250 | static void |
1569 | assert (timermax >= timercnt); |
251 | siginit (void) |
1570 | verify_heap (EV_A_ timers, timercnt); |
252 | { |
|
|
253 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
254 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
255 | |
1571 | |
256 | /* rather than sort out wether we really need nb, set it */ |
1572 | #if EV_PERIODIC_ENABLE |
257 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
1573 | assert (periodicmax >= periodiccnt); |
258 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
1574 | verify_heap (EV_A_ periodics, periodiccnt); |
|
|
1575 | #endif |
259 | |
1576 | |
260 | evio_set (&sigev, sigpipe [0], EV_READ); |
1577 | for (i = NUMPRI; i--; ) |
261 | evio_start (&sigev); |
1578 | { |
|
|
1579 | assert (pendingmax [i] >= pendingcnt [i]); |
|
|
1580 | #if EV_IDLE_ENABLE |
|
|
1581 | assert (idleall >= 0); |
|
|
1582 | assert (idlemax [i] >= idlecnt [i]); |
|
|
1583 | array_verify (EV_A_ (W *)idles [i], idlecnt [i]); |
|
|
1584 | #endif |
|
|
1585 | } |
|
|
1586 | |
|
|
1587 | #if EV_FORK_ENABLE |
|
|
1588 | assert (forkmax >= forkcnt); |
|
|
1589 | array_verify (EV_A_ (W *)forks, forkcnt); |
|
|
1590 | #endif |
|
|
1591 | |
|
|
1592 | #if EV_ASYNC_ENABLE |
|
|
1593 | assert (asyncmax >= asynccnt); |
|
|
1594 | array_verify (EV_A_ (W *)asyncs, asynccnt); |
|
|
1595 | #endif |
|
|
1596 | |
|
|
1597 | assert (preparemax >= preparecnt); |
|
|
1598 | array_verify (EV_A_ (W *)prepares, preparecnt); |
|
|
1599 | |
|
|
1600 | assert (checkmax >= checkcnt); |
|
|
1601 | array_verify (EV_A_ (W *)checks, checkcnt); |
|
|
1602 | |
|
|
1603 | # if 0 |
|
|
1604 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1605 | for (signum = signalmax; signum--; ) if (signals [signum].gotsig) |
|
|
1606 | # endif |
|
|
1607 | #endif |
|
|
1608 | } |
|
|
1609 | |
|
|
1610 | #endif /* multiplicity */ |
|
|
1611 | |
|
|
1612 | #if EV_MULTIPLICITY |
|
|
1613 | struct ev_loop * |
|
|
1614 | ev_default_loop_init (unsigned int flags) |
|
|
1615 | #else |
|
|
1616 | int |
|
|
1617 | ev_default_loop (unsigned int flags) |
|
|
1618 | #endif |
|
|
1619 | { |
|
|
1620 | if (!ev_default_loop_ptr) |
|
|
1621 | { |
|
|
1622 | #if EV_MULTIPLICITY |
|
|
1623 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1624 | #else |
|
|
1625 | ev_default_loop_ptr = 1; |
|
|
1626 | #endif |
|
|
1627 | |
|
|
1628 | loop_init (EV_A_ flags); |
|
|
1629 | |
|
|
1630 | if (ev_backend (EV_A)) |
|
|
1631 | { |
|
|
1632 | #ifndef _WIN32 |
|
|
1633 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1634 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1635 | ev_signal_start (EV_A_ &childev); |
|
|
1636 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1637 | #endif |
|
|
1638 | } |
|
|
1639 | else |
|
|
1640 | ev_default_loop_ptr = 0; |
|
|
1641 | } |
|
|
1642 | |
|
|
1643 | return ev_default_loop_ptr; |
|
|
1644 | } |
|
|
1645 | |
|
|
1646 | void |
|
|
1647 | ev_default_destroy (void) |
|
|
1648 | { |
|
|
1649 | #if EV_MULTIPLICITY |
|
|
1650 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1651 | #endif |
|
|
1652 | |
|
|
1653 | #ifndef _WIN32 |
|
|
1654 | ev_ref (EV_A); /* child watcher */ |
|
|
1655 | ev_signal_stop (EV_A_ &childev); |
|
|
1656 | #endif |
|
|
1657 | |
|
|
1658 | loop_destroy (EV_A); |
|
|
1659 | } |
|
|
1660 | |
|
|
1661 | void |
|
|
1662 | ev_default_fork (void) |
|
|
1663 | { |
|
|
1664 | #if EV_MULTIPLICITY |
|
|
1665 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1666 | #endif |
|
|
1667 | |
|
|
1668 | if (backend) |
|
|
1669 | postfork = 1; /* must be in line with ev_loop_fork */ |
262 | } |
1670 | } |
263 | |
1671 | |
264 | /*****************************************************************************/ |
1672 | /*****************************************************************************/ |
265 | |
1673 | |
266 | #if HAVE_EPOLL |
|
|
267 | # include "ev_epoll.c" |
|
|
268 | #endif |
|
|
269 | #if HAVE_SELECT |
|
|
270 | # include "ev_select.c" |
|
|
271 | #endif |
|
|
272 | |
|
|
273 | int ev_init (int flags) |
|
|
274 | { |
|
|
275 | #if HAVE_MONOTONIC |
|
|
276 | { |
|
|
277 | struct timespec ts; |
|
|
278 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
279 | have_monotonic = 1; |
|
|
280 | } |
|
|
281 | #endif |
|
|
282 | |
|
|
283 | ev_now = ev_time (); |
|
|
284 | now = get_clock (); |
|
|
285 | diff = ev_now - now; |
|
|
286 | |
|
|
287 | if (pipe (sigpipe)) |
|
|
288 | return 0; |
|
|
289 | |
|
|
290 | ev_method = EVMETHOD_NONE; |
|
|
291 | #if HAVE_EPOLL |
|
|
292 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
293 | #endif |
|
|
294 | #if HAVE_SELECT |
|
|
295 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
296 | #endif |
|
|
297 | |
|
|
298 | if (ev_method) |
|
|
299 | { |
|
|
300 | evw_init (&sigev, sigcb, 0); |
|
|
301 | siginit (); |
|
|
302 | } |
|
|
303 | |
|
|
304 | return ev_method; |
|
|
305 | } |
|
|
306 | |
|
|
307 | /*****************************************************************************/ |
|
|
308 | |
|
|
309 | void ev_prefork (void) |
|
|
310 | { |
|
|
311 | } |
|
|
312 | |
|
|
313 | void ev_postfork_parent (void) |
|
|
314 | { |
|
|
315 | } |
|
|
316 | |
|
|
317 | void ev_postfork_child (void) |
|
|
318 | { |
|
|
319 | #if HAVE_EPOLL |
|
|
320 | if (ev_method == EVMETHOD_EPOLL) |
|
|
321 | epoll_postfork_child (); |
|
|
322 | #endif |
|
|
323 | |
|
|
324 | evio_stop (&sigev); |
|
|
325 | close (sigpipe [0]); |
|
|
326 | close (sigpipe [1]); |
|
|
327 | pipe (sigpipe); |
|
|
328 | siginit (); |
|
|
329 | } |
|
|
330 | |
|
|
331 | /*****************************************************************************/ |
|
|
332 | |
|
|
333 | static ev_hook hooks [EVHOOK_NUM]; |
|
|
334 | |
|
|
335 | void |
1674 | void |
336 | ev_hook_register (int type, ev_hook hook) |
1675 | ev_invoke (EV_P_ void *w, int revents) |
337 | { |
1676 | { |
338 | hooks [type] = hook; |
1677 | EV_CB_INVOKE ((W)w, revents); |
339 | } |
1678 | } |
340 | |
1679 | |
341 | void |
1680 | void inline_speed |
342 | ev_hook_unregister (int type, ev_hook hook) |
1681 | call_pending (EV_P) |
343 | { |
1682 | { |
344 | hooks [type] = 0; |
|
|
345 | } |
|
|
346 | |
|
|
347 | static void |
|
|
348 | hook_call (int type) |
|
|
349 | { |
|
|
350 | if (hooks [type]) |
|
|
351 | hooks [type] (); |
|
|
352 | } |
|
|
353 | |
|
|
354 | static void |
|
|
355 | fd_reify (void) |
|
|
356 | { |
|
|
357 | int i; |
1683 | int pri; |
358 | |
1684 | |
359 | for (i = 0; i < fdchangecnt; ++i) |
1685 | for (pri = NUMPRI; pri--; ) |
|
|
1686 | while (pendingcnt [pri]) |
360 | { |
1687 | { |
361 | int fd = fdchanges [i]; |
1688 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
362 | ANFD *anfd = anfds + fd; |
|
|
363 | struct ev_io *w; |
|
|
364 | |
1689 | |
365 | int wev = 0; |
1690 | if (expect_true (p->w)) |
|
|
1691 | { |
|
|
1692 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
366 | |
1693 | |
367 | for (w = anfd->head; w; w = w->next) |
1694 | p->w->pending = 0; |
368 | wev |= w->events; |
1695 | EV_CB_INVOKE (p->w, p->events); |
|
|
1696 | EV_FREQUENT_CHECK; |
|
|
1697 | } |
|
|
1698 | } |
|
|
1699 | } |
369 | |
1700 | |
370 | if (anfd->wev != wev) |
1701 | #if EV_IDLE_ENABLE |
|
|
1702 | void inline_size |
|
|
1703 | idle_reify (EV_P) |
|
|
1704 | { |
|
|
1705 | if (expect_false (idleall)) |
|
|
1706 | { |
|
|
1707 | int pri; |
|
|
1708 | |
|
|
1709 | for (pri = NUMPRI; pri--; ) |
371 | { |
1710 | { |
372 | method_modify (fd, anfd->wev, wev); |
1711 | if (pendingcnt [pri]) |
373 | anfd->wev = wev; |
1712 | break; |
|
|
1713 | |
|
|
1714 | if (idlecnt [pri]) |
|
|
1715 | { |
|
|
1716 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1717 | break; |
|
|
1718 | } |
374 | } |
1719 | } |
375 | } |
1720 | } |
376 | |
|
|
377 | fdchangecnt = 0; |
|
|
378 | } |
1721 | } |
|
|
1722 | #endif |
379 | |
1723 | |
380 | static void |
1724 | void inline_size |
381 | call_pending () |
1725 | timers_reify (EV_P) |
382 | { |
1726 | { |
383 | int i; |
1727 | EV_FREQUENT_CHECK; |
384 | |
1728 | |
385 | for (i = 0; i < pendingcnt; ++i) |
1729 | while (timercnt && ANHE_at (timers [HEAP0]) < mn_now) |
386 | { |
|
|
387 | ANPENDING *p = pendings + i; |
|
|
388 | |
|
|
389 | if (p->w) |
|
|
390 | { |
|
|
391 | p->w->pending = 0; |
|
|
392 | p->w->cb (p->w, p->events); |
|
|
393 | } |
|
|
394 | } |
1730 | { |
|
|
1731 | ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
395 | |
1732 | |
396 | pendingcnt = 0; |
1733 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
397 | } |
|
|
398 | |
|
|
399 | static void |
|
|
400 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
|
|
401 | { |
|
|
402 | while (timercnt && timers [0]->at <= now) |
|
|
403 | { |
|
|
404 | struct ev_timer *w = timers [0]; |
|
|
405 | |
1734 | |
406 | /* first reschedule or stop timer */ |
1735 | /* first reschedule or stop timer */ |
407 | if (w->repeat) |
1736 | if (w->repeat) |
408 | { |
1737 | { |
409 | if (w->is_abs) |
1738 | ev_at (w) += w->repeat; |
410 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
1739 | if (ev_at (w) < mn_now) |
411 | else |
1740 | ev_at (w) = mn_now; |
412 | w->at = now + w->repeat; |
|
|
413 | |
1741 | |
414 | assert (w->at > now); |
1742 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
415 | |
1743 | |
|
|
1744 | ANHE_at_cache (timers [HEAP0]); |
416 | downheap (timers, timercnt, 0); |
1745 | downheap (timers, timercnt, HEAP0); |
417 | } |
1746 | } |
418 | else |
1747 | else |
|
|
1748 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1749 | |
|
|
1750 | EV_FREQUENT_CHECK; |
|
|
1751 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1752 | } |
|
|
1753 | } |
|
|
1754 | |
|
|
1755 | #if EV_PERIODIC_ENABLE |
|
|
1756 | void inline_size |
|
|
1757 | periodics_reify (EV_P) |
|
|
1758 | { |
|
|
1759 | EV_FREQUENT_CHECK; |
|
|
1760 | |
|
|
1761 | while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now) |
|
|
1762 | { |
|
|
1763 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
|
|
1764 | |
|
|
1765 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1766 | |
|
|
1767 | /* first reschedule or stop timer */ |
|
|
1768 | if (w->reschedule_cb) |
419 | { |
1769 | { |
420 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1770 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
421 | --timercnt; /* maybe pass by reference instead? */ |
1771 | |
|
|
1772 | assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now)); |
|
|
1773 | |
|
|
1774 | ANHE_at_cache (periodics [HEAP0]); |
|
|
1775 | downheap (periodics, periodiccnt, HEAP0); |
422 | } |
1776 | } |
|
|
1777 | else if (w->interval) |
|
|
1778 | { |
|
|
1779 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1780 | /* if next trigger time is not sufficiently in the future, put it there */ |
|
|
1781 | /* this might happen because of floating point inexactness */ |
|
|
1782 | if (ev_at (w) - ev_rt_now < TIME_EPSILON) |
|
|
1783 | { |
|
|
1784 | ev_at (w) += w->interval; |
423 | |
1785 | |
424 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1786 | /* if interval is unreasonably low we might still have a time in the past */ |
425 | } |
1787 | /* so correct this. this will make the periodic very inexact, but the user */ |
426 | } |
1788 | /* has effectively asked to get triggered more often than possible */ |
|
|
1789 | if (ev_at (w) < ev_rt_now) |
|
|
1790 | ev_at (w) = ev_rt_now; |
|
|
1791 | } |
427 | |
1792 | |
428 | static void |
1793 | ANHE_at_cache (periodics [HEAP0]); |
429 | time_update () |
1794 | downheap (periodics, periodiccnt, HEAP0); |
|
|
1795 | } |
|
|
1796 | else |
|
|
1797 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1798 | |
|
|
1799 | EV_FREQUENT_CHECK; |
|
|
1800 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1801 | } |
|
|
1802 | } |
|
|
1803 | |
|
|
1804 | static void noinline |
|
|
1805 | periodics_reschedule (EV_P) |
430 | { |
1806 | { |
431 | int i; |
1807 | int i; |
432 | ev_now = ev_time (); |
|
|
433 | |
1808 | |
434 | if (have_monotonic) |
1809 | /* adjust periodics after time jump */ |
|
|
1810 | for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
|
|
1811 | { |
|
|
1812 | ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
|
|
1813 | |
|
|
1814 | if (w->reschedule_cb) |
|
|
1815 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
1816 | else if (w->interval) |
|
|
1817 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1818 | |
|
|
1819 | ANHE_at_cache (periodics [i]); |
435 | { |
1820 | } |
|
|
1821 | |
|
|
1822 | reheap (periodics, periodiccnt); |
|
|
1823 | } |
|
|
1824 | #endif |
|
|
1825 | |
|
|
1826 | void inline_speed |
|
|
1827 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1828 | { |
|
|
1829 | int i; |
|
|
1830 | |
|
|
1831 | #if EV_USE_MONOTONIC |
|
|
1832 | if (expect_true (have_monotonic)) |
|
|
1833 | { |
436 | ev_tstamp odiff = diff; |
1834 | ev_tstamp odiff = rtmn_diff; |
437 | |
1835 | |
438 | /* detecting time jumps is much more difficult */ |
1836 | mn_now = get_clock (); |
439 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
1837 | |
|
|
1838 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1839 | /* interpolate in the meantime */ |
|
|
1840 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
440 | { |
1841 | { |
441 | now = get_clock (); |
1842 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1843 | return; |
|
|
1844 | } |
|
|
1845 | |
|
|
1846 | now_floor = mn_now; |
|
|
1847 | ev_rt_now = ev_time (); |
|
|
1848 | |
|
|
1849 | /* loop a few times, before making important decisions. |
|
|
1850 | * on the choice of "4": one iteration isn't enough, |
|
|
1851 | * in case we get preempted during the calls to |
|
|
1852 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1853 | * to succeed in that case, though. and looping a few more times |
|
|
1854 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1855 | * in the unlikely event of having been preempted here. |
|
|
1856 | */ |
|
|
1857 | for (i = 4; --i; ) |
|
|
1858 | { |
442 | diff = ev_now - now; |
1859 | rtmn_diff = ev_rt_now - mn_now; |
443 | |
1860 | |
444 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1861 | if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
445 | return; /* all is well */ |
1862 | return; /* all is well */ |
446 | |
1863 | |
447 | ev_now = ev_time (); |
1864 | ev_rt_now = ev_time (); |
|
|
1865 | mn_now = get_clock (); |
|
|
1866 | now_floor = mn_now; |
448 | } |
1867 | } |
449 | |
1868 | |
450 | /* time jump detected, reschedule atimers */ |
1869 | # if EV_PERIODIC_ENABLE |
451 | for (i = 0; i < atimercnt; ++i) |
1870 | periodics_reschedule (EV_A); |
|
|
1871 | # endif |
|
|
1872 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1873 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1874 | } |
|
|
1875 | else |
|
|
1876 | #endif |
|
|
1877 | { |
|
|
1878 | ev_rt_now = ev_time (); |
|
|
1879 | |
|
|
1880 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
452 | { |
1881 | { |
453 | struct ev_timer *w = atimers [i]; |
1882 | #if EV_PERIODIC_ENABLE |
454 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
1883 | periodics_reschedule (EV_A); |
|
|
1884 | #endif |
|
|
1885 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1886 | for (i = 0; i < timercnt; ++i) |
|
|
1887 | { |
|
|
1888 | ANHE *he = timers + i + HEAP0; |
|
|
1889 | ANHE_w (*he)->at += ev_rt_now - mn_now; |
|
|
1890 | ANHE_at_cache (*he); |
|
|
1891 | } |
455 | } |
1892 | } |
456 | } |
|
|
457 | else |
|
|
458 | { |
|
|
459 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
460 | /* time jump detected, adjust rtimers */ |
|
|
461 | for (i = 0; i < rtimercnt; ++i) |
|
|
462 | rtimers [i]->at += ev_now - now; |
|
|
463 | |
1893 | |
464 | now = ev_now; |
1894 | mn_now = ev_rt_now; |
465 | } |
1895 | } |
466 | } |
1896 | } |
467 | |
1897 | |
468 | int ev_loop_done; |
1898 | void |
|
|
1899 | ev_ref (EV_P) |
|
|
1900 | { |
|
|
1901 | ++activecnt; |
|
|
1902 | } |
469 | |
1903 | |
|
|
1904 | void |
|
|
1905 | ev_unref (EV_P) |
|
|
1906 | { |
|
|
1907 | --activecnt; |
|
|
1908 | } |
|
|
1909 | |
|
|
1910 | static int loop_done; |
|
|
1911 | |
|
|
1912 | void |
470 | void ev_loop (int flags) |
1913 | ev_loop (EV_P_ int flags) |
471 | { |
1914 | { |
472 | double block; |
1915 | loop_done = EVUNLOOP_CANCEL; |
473 | ev_loop_done = flags & EVLOOP_ONESHOT; |
1916 | |
|
|
1917 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
474 | |
1918 | |
475 | do |
1919 | do |
476 | { |
1920 | { |
477 | hook_call (EVHOOK_PREPOLL); |
1921 | #if EV_VERIFY >= 2 |
|
|
1922 | ev_loop_verify (EV_A); |
|
|
1923 | #endif |
|
|
1924 | |
|
|
1925 | #ifndef _WIN32 |
|
|
1926 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1927 | if (expect_false (getpid () != curpid)) |
|
|
1928 | { |
|
|
1929 | curpid = getpid (); |
|
|
1930 | postfork = 1; |
|
|
1931 | } |
|
|
1932 | #endif |
|
|
1933 | |
|
|
1934 | #if EV_FORK_ENABLE |
|
|
1935 | /* we might have forked, so queue fork handlers */ |
|
|
1936 | if (expect_false (postfork)) |
|
|
1937 | if (forkcnt) |
|
|
1938 | { |
|
|
1939 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1940 | call_pending (EV_A); |
|
|
1941 | } |
|
|
1942 | #endif |
|
|
1943 | |
|
|
1944 | /* queue prepare watchers (and execute them) */ |
|
|
1945 | if (expect_false (preparecnt)) |
|
|
1946 | { |
|
|
1947 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1948 | call_pending (EV_A); |
|
|
1949 | } |
|
|
1950 | |
|
|
1951 | if (expect_false (!activecnt)) |
|
|
1952 | break; |
|
|
1953 | |
|
|
1954 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1955 | if (expect_false (postfork)) |
|
|
1956 | loop_fork (EV_A); |
478 | |
1957 | |
479 | /* update fd-related kernel structures */ |
1958 | /* update fd-related kernel structures */ |
480 | fd_reify (); |
1959 | fd_reify (EV_A); |
481 | |
1960 | |
482 | /* calculate blocking time */ |
1961 | /* calculate blocking time */ |
483 | if (flags & EVLOOP_NONBLOCK) |
1962 | { |
484 | block = 0.; |
1963 | ev_tstamp waittime = 0.; |
485 | else |
1964 | ev_tstamp sleeptime = 0.; |
|
|
1965 | |
|
|
1966 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
486 | { |
1967 | { |
|
|
1968 | /* update time to cancel out callback processing overhead */ |
|
|
1969 | time_update (EV_A_ 1e100); |
|
|
1970 | |
487 | block = MAX_BLOCKTIME; |
1971 | waittime = MAX_BLOCKTIME; |
488 | |
1972 | |
489 | if (rtimercnt) |
1973 | if (timercnt) |
490 | { |
1974 | { |
491 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
1975 | ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
492 | if (block > to) block = to; |
1976 | if (waittime > to) waittime = to; |
493 | } |
1977 | } |
494 | |
1978 | |
|
|
1979 | #if EV_PERIODIC_ENABLE |
495 | if (atimercnt) |
1980 | if (periodiccnt) |
496 | { |
1981 | { |
497 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
1982 | ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
498 | if (block > to) block = to; |
1983 | if (waittime > to) waittime = to; |
499 | } |
1984 | } |
|
|
1985 | #endif |
500 | |
1986 | |
501 | if (block < 0.) block = 0.; |
1987 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1988 | waittime = timeout_blocktime; |
|
|
1989 | |
|
|
1990 | sleeptime = waittime - backend_fudge; |
|
|
1991 | |
|
|
1992 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1993 | sleeptime = io_blocktime; |
|
|
1994 | |
|
|
1995 | if (sleeptime) |
|
|
1996 | { |
|
|
1997 | ev_sleep (sleeptime); |
|
|
1998 | waittime -= sleeptime; |
|
|
1999 | } |
502 | } |
2000 | } |
503 | |
2001 | |
504 | method_poll (block); |
2002 | ++loop_count; |
|
|
2003 | backend_poll (EV_A_ waittime); |
505 | |
2004 | |
506 | /* update ev_now, do magic */ |
2005 | /* update ev_rt_now, do magic */ |
507 | time_update (); |
2006 | time_update (EV_A_ waittime + sleeptime); |
|
|
2007 | } |
508 | |
2008 | |
509 | hook_call (EVHOOK_POSTPOLL); |
|
|
510 | |
|
|
511 | /* put pending timers into pendign queue and reschedule them */ |
2009 | /* queue pending timers and reschedule them */ |
512 | /* absolute timers first */ |
2010 | timers_reify (EV_A); /* relative timers called last */ |
513 | timers_reify (atimers, atimercnt, ev_now); |
2011 | #if EV_PERIODIC_ENABLE |
514 | /* relative timers second */ |
2012 | periodics_reify (EV_A); /* absolute timers called first */ |
515 | timers_reify (rtimers, rtimercnt, now); |
2013 | #endif |
516 | |
2014 | |
|
|
2015 | #if EV_IDLE_ENABLE |
|
|
2016 | /* queue idle watchers unless other events are pending */ |
|
|
2017 | idle_reify (EV_A); |
|
|
2018 | #endif |
|
|
2019 | |
|
|
2020 | /* queue check watchers, to be executed first */ |
|
|
2021 | if (expect_false (checkcnt)) |
|
|
2022 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
2023 | |
517 | call_pending (); |
2024 | call_pending (EV_A); |
518 | } |
2025 | } |
519 | while (!ev_loop_done); |
2026 | while (expect_true ( |
|
|
2027 | activecnt |
|
|
2028 | && !loop_done |
|
|
2029 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
2030 | )); |
|
|
2031 | |
|
|
2032 | if (loop_done == EVUNLOOP_ONE) |
|
|
2033 | loop_done = EVUNLOOP_CANCEL; |
|
|
2034 | } |
|
|
2035 | |
|
|
2036 | void |
|
|
2037 | ev_unloop (EV_P_ int how) |
|
|
2038 | { |
|
|
2039 | loop_done = how; |
520 | } |
2040 | } |
521 | |
2041 | |
522 | /*****************************************************************************/ |
2042 | /*****************************************************************************/ |
523 | |
2043 | |
524 | static void |
2044 | void inline_size |
525 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
2045 | wlist_add (WL *head, WL elem) |
526 | { |
2046 | { |
527 | elem->next = *head; |
2047 | elem->next = *head; |
528 | *head = elem; |
2048 | *head = elem; |
529 | } |
2049 | } |
530 | |
2050 | |
531 | static void |
2051 | void inline_size |
532 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
2052 | wlist_del (WL *head, WL elem) |
533 | { |
2053 | { |
534 | while (*head) |
2054 | while (*head) |
535 | { |
2055 | { |
536 | if (*head == elem) |
2056 | if (*head == elem) |
537 | { |
2057 | { |
… | |
… | |
541 | |
2061 | |
542 | head = &(*head)->next; |
2062 | head = &(*head)->next; |
543 | } |
2063 | } |
544 | } |
2064 | } |
545 | |
2065 | |
546 | static void |
2066 | void inline_speed |
547 | ev_start (struct ev_watcher *w, int active) |
2067 | clear_pending (EV_P_ W w) |
548 | { |
2068 | { |
|
|
2069 | if (w->pending) |
|
|
2070 | { |
|
|
2071 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
549 | w->pending = 0; |
2072 | w->pending = 0; |
|
|
2073 | } |
|
|
2074 | } |
|
|
2075 | |
|
|
2076 | int |
|
|
2077 | ev_clear_pending (EV_P_ void *w) |
|
|
2078 | { |
|
|
2079 | W w_ = (W)w; |
|
|
2080 | int pending = w_->pending; |
|
|
2081 | |
|
|
2082 | if (expect_true (pending)) |
|
|
2083 | { |
|
|
2084 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
2085 | w_->pending = 0; |
|
|
2086 | p->w = 0; |
|
|
2087 | return p->events; |
|
|
2088 | } |
|
|
2089 | else |
|
|
2090 | return 0; |
|
|
2091 | } |
|
|
2092 | |
|
|
2093 | void inline_size |
|
|
2094 | pri_adjust (EV_P_ W w) |
|
|
2095 | { |
|
|
2096 | int pri = w->priority; |
|
|
2097 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
2098 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
2099 | w->priority = pri; |
|
|
2100 | } |
|
|
2101 | |
|
|
2102 | void inline_speed |
|
|
2103 | ev_start (EV_P_ W w, int active) |
|
|
2104 | { |
|
|
2105 | pri_adjust (EV_A_ w); |
550 | w->active = active; |
2106 | w->active = active; |
|
|
2107 | ev_ref (EV_A); |
551 | } |
2108 | } |
552 | |
2109 | |
553 | static void |
2110 | void inline_size |
554 | ev_stop (struct ev_watcher *w) |
2111 | ev_stop (EV_P_ W w) |
555 | { |
2112 | { |
556 | if (w->pending) |
2113 | ev_unref (EV_A); |
557 | pendings [w->pending - 1].w = 0; |
|
|
558 | |
|
|
559 | w->active = 0; |
2114 | w->active = 0; |
560 | /* nop */ |
|
|
561 | } |
2115 | } |
562 | |
2116 | |
563 | /*****************************************************************************/ |
2117 | /*****************************************************************************/ |
564 | |
2118 | |
565 | void |
2119 | void noinline |
566 | evio_start (struct ev_io *w) |
2120 | ev_io_start (EV_P_ ev_io *w) |
567 | { |
2121 | { |
|
|
2122 | int fd = w->fd; |
|
|
2123 | |
|
|
2124 | if (expect_false (ev_is_active (w))) |
|
|
2125 | return; |
|
|
2126 | |
|
|
2127 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
2128 | |
|
|
2129 | EV_FREQUENT_CHECK; |
|
|
2130 | |
|
|
2131 | ev_start (EV_A_ (W)w, 1); |
|
|
2132 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
2133 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
2134 | |
|
|
2135 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
2136 | w->events &= ~EV_IOFDSET; |
|
|
2137 | |
|
|
2138 | EV_FREQUENT_CHECK; |
|
|
2139 | } |
|
|
2140 | |
|
|
2141 | void noinline |
|
|
2142 | ev_io_stop (EV_P_ ev_io *w) |
|
|
2143 | { |
|
|
2144 | clear_pending (EV_A_ (W)w); |
|
|
2145 | if (expect_false (!ev_is_active (w))) |
|
|
2146 | return; |
|
|
2147 | |
|
|
2148 | assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
2149 | |
|
|
2150 | EV_FREQUENT_CHECK; |
|
|
2151 | |
|
|
2152 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
2153 | ev_stop (EV_A_ (W)w); |
|
|
2154 | |
|
|
2155 | fd_change (EV_A_ w->fd, 1); |
|
|
2156 | |
|
|
2157 | EV_FREQUENT_CHECK; |
|
|
2158 | } |
|
|
2159 | |
|
|
2160 | void noinline |
|
|
2161 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
2162 | { |
|
|
2163 | if (expect_false (ev_is_active (w))) |
|
|
2164 | return; |
|
|
2165 | |
|
|
2166 | ev_at (w) += mn_now; |
|
|
2167 | |
|
|
2168 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
2169 | |
|
|
2170 | EV_FREQUENT_CHECK; |
|
|
2171 | |
|
|
2172 | ++timercnt; |
|
|
2173 | ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1); |
|
|
2174 | array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
|
|
2175 | ANHE_w (timers [ev_active (w)]) = (WT)w; |
|
|
2176 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2177 | upheap (timers, ev_active (w)); |
|
|
2178 | |
|
|
2179 | EV_FREQUENT_CHECK; |
|
|
2180 | |
|
|
2181 | /*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
|
|
2182 | } |
|
|
2183 | |
|
|
2184 | void noinline |
|
|
2185 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
2186 | { |
|
|
2187 | clear_pending (EV_A_ (W)w); |
|
|
2188 | if (expect_false (!ev_is_active (w))) |
|
|
2189 | return; |
|
|
2190 | |
|
|
2191 | EV_FREQUENT_CHECK; |
|
|
2192 | |
|
|
2193 | { |
|
|
2194 | int active = ev_active (w); |
|
|
2195 | |
|
|
2196 | assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
|
|
2197 | |
|
|
2198 | --timercnt; |
|
|
2199 | |
|
|
2200 | if (expect_true (active < timercnt + HEAP0)) |
|
|
2201 | { |
|
|
2202 | timers [active] = timers [timercnt + HEAP0]; |
|
|
2203 | adjustheap (timers, timercnt, active); |
|
|
2204 | } |
|
|
2205 | } |
|
|
2206 | |
|
|
2207 | EV_FREQUENT_CHECK; |
|
|
2208 | |
|
|
2209 | ev_at (w) -= mn_now; |
|
|
2210 | |
|
|
2211 | ev_stop (EV_A_ (W)w); |
|
|
2212 | } |
|
|
2213 | |
|
|
2214 | void noinline |
|
|
2215 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
2216 | { |
|
|
2217 | EV_FREQUENT_CHECK; |
|
|
2218 | |
568 | if (ev_is_active (w)) |
2219 | if (ev_is_active (w)) |
|
|
2220 | { |
|
|
2221 | if (w->repeat) |
|
|
2222 | { |
|
|
2223 | ev_at (w) = mn_now + w->repeat; |
|
|
2224 | ANHE_at_cache (timers [ev_active (w)]); |
|
|
2225 | adjustheap (timers, timercnt, ev_active (w)); |
|
|
2226 | } |
|
|
2227 | else |
|
|
2228 | ev_timer_stop (EV_A_ w); |
|
|
2229 | } |
|
|
2230 | else if (w->repeat) |
|
|
2231 | { |
|
|
2232 | ev_at (w) = w->repeat; |
|
|
2233 | ev_timer_start (EV_A_ w); |
|
|
2234 | } |
|
|
2235 | |
|
|
2236 | EV_FREQUENT_CHECK; |
|
|
2237 | } |
|
|
2238 | |
|
|
2239 | #if EV_PERIODIC_ENABLE |
|
|
2240 | void noinline |
|
|
2241 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
2242 | { |
|
|
2243 | if (expect_false (ev_is_active (w))) |
569 | return; |
2244 | return; |
570 | |
2245 | |
571 | int fd = w->fd; |
2246 | if (w->reschedule_cb) |
|
|
2247 | ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
|
|
2248 | else if (w->interval) |
|
|
2249 | { |
|
|
2250 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
2251 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
2252 | ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
2253 | } |
|
|
2254 | else |
|
|
2255 | ev_at (w) = w->offset; |
572 | |
2256 | |
573 | ev_start ((struct ev_watcher *)w, 1); |
2257 | EV_FREQUENT_CHECK; |
574 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
575 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
|
|
576 | |
2258 | |
577 | ++fdchangecnt; |
2259 | ++periodiccnt; |
578 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
2260 | ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1); |
579 | fdchanges [fdchangecnt - 1] = fd; |
2261 | array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
580 | } |
2262 | ANHE_w (periodics [ev_active (w)]) = (WT)w; |
|
|
2263 | ANHE_at_cache (periodics [ev_active (w)]); |
|
|
2264 | upheap (periodics, ev_active (w)); |
581 | |
2265 | |
582 | void |
2266 | EV_FREQUENT_CHECK; |
583 | evio_stop (struct ev_io *w) |
2267 | |
|
|
2268 | /*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
|
|
2269 | } |
|
|
2270 | |
|
|
2271 | void noinline |
|
|
2272 | ev_periodic_stop (EV_P_ ev_periodic *w) |
584 | { |
2273 | { |
|
|
2274 | clear_pending (EV_A_ (W)w); |
585 | if (!ev_is_active (w)) |
2275 | if (expect_false (!ev_is_active (w))) |
586 | return; |
2276 | return; |
587 | |
2277 | |
588 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
2278 | EV_FREQUENT_CHECK; |
589 | ev_stop ((struct ev_watcher *)w); |
|
|
590 | |
2279 | |
591 | ++fdchangecnt; |
2280 | { |
592 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
2281 | int active = ev_active (w); |
593 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
594 | } |
|
|
595 | |
2282 | |
596 | void |
2283 | assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
597 | evtimer_start (struct ev_timer *w) |
2284 | |
|
|
2285 | --periodiccnt; |
|
|
2286 | |
|
|
2287 | if (expect_true (active < periodiccnt + HEAP0)) |
|
|
2288 | { |
|
|
2289 | periodics [active] = periodics [periodiccnt + HEAP0]; |
|
|
2290 | adjustheap (periodics, periodiccnt, active); |
|
|
2291 | } |
|
|
2292 | } |
|
|
2293 | |
|
|
2294 | EV_FREQUENT_CHECK; |
|
|
2295 | |
|
|
2296 | ev_stop (EV_A_ (W)w); |
|
|
2297 | } |
|
|
2298 | |
|
|
2299 | void noinline |
|
|
2300 | ev_periodic_again (EV_P_ ev_periodic *w) |
598 | { |
2301 | { |
|
|
2302 | /* TODO: use adjustheap and recalculation */ |
|
|
2303 | ev_periodic_stop (EV_A_ w); |
|
|
2304 | ev_periodic_start (EV_A_ w); |
|
|
2305 | } |
|
|
2306 | #endif |
|
|
2307 | |
|
|
2308 | #ifndef SA_RESTART |
|
|
2309 | # define SA_RESTART 0 |
|
|
2310 | #endif |
|
|
2311 | |
|
|
2312 | void noinline |
|
|
2313 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
2314 | { |
|
|
2315 | #if EV_MULTIPLICITY |
|
|
2316 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2317 | #endif |
599 | if (ev_is_active (w)) |
2318 | if (expect_false (ev_is_active (w))) |
600 | return; |
2319 | return; |
601 | |
2320 | |
602 | if (w->is_abs) |
2321 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
2322 | |
|
|
2323 | evpipe_init (EV_A); |
|
|
2324 | |
|
|
2325 | EV_FREQUENT_CHECK; |
|
|
2326 | |
603 | { |
2327 | { |
604 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
2328 | #ifndef _WIN32 |
605 | if (w->repeat) |
2329 | sigset_t full, prev; |
606 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
2330 | sigfillset (&full); |
|
|
2331 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2332 | #endif |
607 | |
2333 | |
608 | ev_start ((struct ev_watcher *)w, ++atimercnt); |
2334 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
609 | array_needsize (atimers, atimermax, atimercnt, ); |
2335 | |
610 | atimers [atimercnt - 1] = w; |
2336 | #ifndef _WIN32 |
611 | upheap (atimers, atimercnt - 1); |
2337 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2338 | #endif |
|
|
2339 | } |
|
|
2340 | |
|
|
2341 | ev_start (EV_A_ (W)w, 1); |
|
|
2342 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2343 | |
|
|
2344 | if (!((WL)w)->next) |
612 | } |
2345 | { |
613 | else |
2346 | #if _WIN32 |
|
|
2347 | signal (w->signum, ev_sighandler); |
|
|
2348 | #else |
|
|
2349 | struct sigaction sa; |
|
|
2350 | sa.sa_handler = ev_sighandler; |
|
|
2351 | sigfillset (&sa.sa_mask); |
|
|
2352 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2353 | sigaction (w->signum, &sa, 0); |
|
|
2354 | #endif |
614 | { |
2355 | } |
615 | w->at += now; |
|
|
616 | |
2356 | |
617 | ev_start ((struct ev_watcher *)w, ++rtimercnt); |
2357 | EV_FREQUENT_CHECK; |
618 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
619 | rtimers [rtimercnt - 1] = w; |
|
|
620 | upheap (rtimers, rtimercnt - 1); |
|
|
621 | } |
|
|
622 | |
|
|
623 | } |
2358 | } |
624 | |
2359 | |
625 | void |
2360 | void noinline |
626 | evtimer_stop (struct ev_timer *w) |
2361 | ev_signal_stop (EV_P_ ev_signal *w) |
627 | { |
2362 | { |
|
|
2363 | clear_pending (EV_A_ (W)w); |
628 | if (!ev_is_active (w)) |
2364 | if (expect_false (!ev_is_active (w))) |
629 | return; |
2365 | return; |
630 | |
2366 | |
631 | if (w->is_abs) |
2367 | EV_FREQUENT_CHECK; |
632 | { |
|
|
633 | if (w->active < atimercnt--) |
|
|
634 | { |
|
|
635 | atimers [w->active - 1] = atimers [atimercnt]; |
|
|
636 | downheap (atimers, atimercnt, w->active - 1); |
|
|
637 | } |
|
|
638 | } |
|
|
639 | else |
|
|
640 | { |
|
|
641 | if (w->active < rtimercnt--) |
|
|
642 | { |
|
|
643 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
644 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
645 | } |
|
|
646 | } |
|
|
647 | |
2368 | |
648 | ev_stop ((struct ev_watcher *)w); |
2369 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
649 | } |
2370 | ev_stop (EV_A_ (W)w); |
650 | |
|
|
651 | void |
|
|
652 | evsignal_start (struct ev_signal *w) |
|
|
653 | { |
|
|
654 | if (ev_is_active (w)) |
|
|
655 | return; |
|
|
656 | |
|
|
657 | ev_start ((struct ev_watcher *)w, 1); |
|
|
658 | array_needsize (signals, signalmax, w->signum, signals_init); |
|
|
659 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
|
|
660 | |
|
|
661 | if (!w->next) |
|
|
662 | { |
|
|
663 | struct sigaction sa; |
|
|
664 | sa.sa_handler = sighandler; |
|
|
665 | sigfillset (&sa.sa_mask); |
|
|
666 | sa.sa_flags = 0; |
|
|
667 | sigaction (w->signum, &sa, 0); |
|
|
668 | } |
|
|
669 | } |
|
|
670 | |
|
|
671 | void |
|
|
672 | evsignal_stop (struct ev_signal *w) |
|
|
673 | { |
|
|
674 | if (!ev_is_active (w)) |
|
|
675 | return; |
|
|
676 | |
|
|
677 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
|
|
678 | ev_stop ((struct ev_watcher *)w); |
|
|
679 | |
2371 | |
680 | if (!signals [w->signum - 1].head) |
2372 | if (!signals [w->signum - 1].head) |
681 | signal (w->signum, SIG_DFL); |
2373 | signal (w->signum, SIG_DFL); |
|
|
2374 | |
|
|
2375 | EV_FREQUENT_CHECK; |
682 | } |
2376 | } |
|
|
2377 | |
|
|
2378 | void |
|
|
2379 | ev_child_start (EV_P_ ev_child *w) |
|
|
2380 | { |
|
|
2381 | #if EV_MULTIPLICITY |
|
|
2382 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2383 | #endif |
|
|
2384 | if (expect_false (ev_is_active (w))) |
|
|
2385 | return; |
|
|
2386 | |
|
|
2387 | EV_FREQUENT_CHECK; |
|
|
2388 | |
|
|
2389 | ev_start (EV_A_ (W)w, 1); |
|
|
2390 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2391 | |
|
|
2392 | EV_FREQUENT_CHECK; |
|
|
2393 | } |
|
|
2394 | |
|
|
2395 | void |
|
|
2396 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2397 | { |
|
|
2398 | clear_pending (EV_A_ (W)w); |
|
|
2399 | if (expect_false (!ev_is_active (w))) |
|
|
2400 | return; |
|
|
2401 | |
|
|
2402 | EV_FREQUENT_CHECK; |
|
|
2403 | |
|
|
2404 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2405 | ev_stop (EV_A_ (W)w); |
|
|
2406 | |
|
|
2407 | EV_FREQUENT_CHECK; |
|
|
2408 | } |
|
|
2409 | |
|
|
2410 | #if EV_STAT_ENABLE |
|
|
2411 | |
|
|
2412 | # ifdef _WIN32 |
|
|
2413 | # undef lstat |
|
|
2414 | # define lstat(a,b) _stati64 (a,b) |
|
|
2415 | # endif |
|
|
2416 | |
|
|
2417 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2418 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2419 | |
|
|
2420 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2421 | |
|
|
2422 | #if EV_USE_INOTIFY |
|
|
2423 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2424 | |
|
|
2425 | static void noinline |
|
|
2426 | infy_add (EV_P_ ev_stat *w) |
|
|
2427 | { |
|
|
2428 | 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); |
|
|
2429 | |
|
|
2430 | if (w->wd < 0) |
|
|
2431 | { |
|
|
2432 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2433 | |
|
|
2434 | /* monitor some parent directory for speedup hints */ |
|
|
2435 | /* note that exceeding the hardcoded limit is not a correctness issue, */ |
|
|
2436 | /* but an efficiency issue only */ |
|
|
2437 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2438 | { |
|
|
2439 | char path [4096]; |
|
|
2440 | strcpy (path, w->path); |
|
|
2441 | |
|
|
2442 | do |
|
|
2443 | { |
|
|
2444 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2445 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2446 | |
|
|
2447 | char *pend = strrchr (path, '/'); |
|
|
2448 | |
|
|
2449 | if (!pend) |
|
|
2450 | break; /* whoops, no '/', complain to your admin */ |
|
|
2451 | |
|
|
2452 | *pend = 0; |
|
|
2453 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2454 | } |
|
|
2455 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2456 | } |
|
|
2457 | } |
|
|
2458 | else |
|
|
2459 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2460 | |
|
|
2461 | if (w->wd >= 0) |
|
|
2462 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2463 | } |
|
|
2464 | |
|
|
2465 | static void noinline |
|
|
2466 | infy_del (EV_P_ ev_stat *w) |
|
|
2467 | { |
|
|
2468 | int slot; |
|
|
2469 | int wd = w->wd; |
|
|
2470 | |
|
|
2471 | if (wd < 0) |
|
|
2472 | return; |
|
|
2473 | |
|
|
2474 | w->wd = -2; |
|
|
2475 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2476 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2477 | |
|
|
2478 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2479 | inotify_rm_watch (fs_fd, wd); |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | static void noinline |
|
|
2483 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2484 | { |
|
|
2485 | if (slot < 0) |
|
|
2486 | /* overflow, need to check for all hahs slots */ |
|
|
2487 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2488 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2489 | else |
|
|
2490 | { |
|
|
2491 | WL w_; |
|
|
2492 | |
|
|
2493 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2494 | { |
|
|
2495 | ev_stat *w = (ev_stat *)w_; |
|
|
2496 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2497 | |
|
|
2498 | if (w->wd == wd || wd == -1) |
|
|
2499 | { |
|
|
2500 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2501 | { |
|
|
2502 | w->wd = -1; |
|
|
2503 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2504 | } |
|
|
2505 | |
|
|
2506 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2507 | } |
|
|
2508 | } |
|
|
2509 | } |
|
|
2510 | } |
|
|
2511 | |
|
|
2512 | static void |
|
|
2513 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
2514 | { |
|
|
2515 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
2516 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2517 | int ofs; |
|
|
2518 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2519 | |
|
|
2520 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2521 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2522 | } |
|
|
2523 | |
|
|
2524 | void inline_size |
|
|
2525 | infy_init (EV_P) |
|
|
2526 | { |
|
|
2527 | if (fs_fd != -2) |
|
|
2528 | return; |
|
|
2529 | |
|
|
2530 | fs_fd = inotify_init (); |
|
|
2531 | |
|
|
2532 | if (fs_fd >= 0) |
|
|
2533 | { |
|
|
2534 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2535 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2536 | ev_io_start (EV_A_ &fs_w); |
|
|
2537 | } |
|
|
2538 | } |
|
|
2539 | |
|
|
2540 | void inline_size |
|
|
2541 | infy_fork (EV_P) |
|
|
2542 | { |
|
|
2543 | int slot; |
|
|
2544 | |
|
|
2545 | if (fs_fd < 0) |
|
|
2546 | return; |
|
|
2547 | |
|
|
2548 | close (fs_fd); |
|
|
2549 | fs_fd = inotify_init (); |
|
|
2550 | |
|
|
2551 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2552 | { |
|
|
2553 | WL w_ = fs_hash [slot].head; |
|
|
2554 | fs_hash [slot].head = 0; |
|
|
2555 | |
|
|
2556 | while (w_) |
|
|
2557 | { |
|
|
2558 | ev_stat *w = (ev_stat *)w_; |
|
|
2559 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2560 | |
|
|
2561 | w->wd = -1; |
|
|
2562 | |
|
|
2563 | if (fs_fd >= 0) |
|
|
2564 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2565 | else |
|
|
2566 | ev_timer_start (EV_A_ &w->timer); |
|
|
2567 | } |
|
|
2568 | |
|
|
2569 | } |
|
|
2570 | } |
|
|
2571 | |
|
|
2572 | #endif |
|
|
2573 | |
|
|
2574 | void |
|
|
2575 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2576 | { |
|
|
2577 | if (lstat (w->path, &w->attr) < 0) |
|
|
2578 | w->attr.st_nlink = 0; |
|
|
2579 | else if (!w->attr.st_nlink) |
|
|
2580 | w->attr.st_nlink = 1; |
|
|
2581 | } |
|
|
2582 | |
|
|
2583 | static void noinline |
|
|
2584 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2585 | { |
|
|
2586 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2587 | |
|
|
2588 | /* we copy this here each the time so that */ |
|
|
2589 | /* prev has the old value when the callback gets invoked */ |
|
|
2590 | w->prev = w->attr; |
|
|
2591 | ev_stat_stat (EV_A_ w); |
|
|
2592 | |
|
|
2593 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2594 | if ( |
|
|
2595 | w->prev.st_dev != w->attr.st_dev |
|
|
2596 | || w->prev.st_ino != w->attr.st_ino |
|
|
2597 | || w->prev.st_mode != w->attr.st_mode |
|
|
2598 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2599 | || w->prev.st_uid != w->attr.st_uid |
|
|
2600 | || w->prev.st_gid != w->attr.st_gid |
|
|
2601 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2602 | || w->prev.st_size != w->attr.st_size |
|
|
2603 | || w->prev.st_atime != w->attr.st_atime |
|
|
2604 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2605 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2606 | ) { |
|
|
2607 | #if EV_USE_INOTIFY |
|
|
2608 | infy_del (EV_A_ w); |
|
|
2609 | infy_add (EV_A_ w); |
|
|
2610 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2611 | #endif |
|
|
2612 | |
|
|
2613 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2614 | } |
|
|
2615 | } |
|
|
2616 | |
|
|
2617 | void |
|
|
2618 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2619 | { |
|
|
2620 | if (expect_false (ev_is_active (w))) |
|
|
2621 | return; |
|
|
2622 | |
|
|
2623 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2624 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2625 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2626 | |
|
|
2627 | ev_stat_stat (EV_A_ w); |
|
|
2628 | |
|
|
2629 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2630 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2631 | |
|
|
2632 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2633 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2634 | |
|
|
2635 | #if EV_USE_INOTIFY |
|
|
2636 | infy_init (EV_A); |
|
|
2637 | |
|
|
2638 | if (fs_fd >= 0) |
|
|
2639 | infy_add (EV_A_ w); |
|
|
2640 | else |
|
|
2641 | #endif |
|
|
2642 | ev_timer_start (EV_A_ &w->timer); |
|
|
2643 | |
|
|
2644 | ev_start (EV_A_ (W)w, 1); |
|
|
2645 | |
|
|
2646 | EV_FREQUENT_CHECK; |
|
|
2647 | } |
|
|
2648 | |
|
|
2649 | void |
|
|
2650 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2651 | { |
|
|
2652 | clear_pending (EV_A_ (W)w); |
|
|
2653 | if (expect_false (!ev_is_active (w))) |
|
|
2654 | return; |
|
|
2655 | |
|
|
2656 | EV_FREQUENT_CHECK; |
|
|
2657 | |
|
|
2658 | #if EV_USE_INOTIFY |
|
|
2659 | infy_del (EV_A_ w); |
|
|
2660 | #endif |
|
|
2661 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2662 | |
|
|
2663 | ev_stop (EV_A_ (W)w); |
|
|
2664 | |
|
|
2665 | EV_FREQUENT_CHECK; |
|
|
2666 | } |
|
|
2667 | #endif |
|
|
2668 | |
|
|
2669 | #if EV_IDLE_ENABLE |
|
|
2670 | void |
|
|
2671 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2672 | { |
|
|
2673 | if (expect_false (ev_is_active (w))) |
|
|
2674 | return; |
|
|
2675 | |
|
|
2676 | pri_adjust (EV_A_ (W)w); |
|
|
2677 | |
|
|
2678 | EV_FREQUENT_CHECK; |
|
|
2679 | |
|
|
2680 | { |
|
|
2681 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2682 | |
|
|
2683 | ++idleall; |
|
|
2684 | ev_start (EV_A_ (W)w, active); |
|
|
2685 | |
|
|
2686 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2687 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2688 | } |
|
|
2689 | |
|
|
2690 | EV_FREQUENT_CHECK; |
|
|
2691 | } |
|
|
2692 | |
|
|
2693 | void |
|
|
2694 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2695 | { |
|
|
2696 | clear_pending (EV_A_ (W)w); |
|
|
2697 | if (expect_false (!ev_is_active (w))) |
|
|
2698 | return; |
|
|
2699 | |
|
|
2700 | EV_FREQUENT_CHECK; |
|
|
2701 | |
|
|
2702 | { |
|
|
2703 | int active = ev_active (w); |
|
|
2704 | |
|
|
2705 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2706 | ev_active (idles [ABSPRI (w)][active - 1]) = active; |
|
|
2707 | |
|
|
2708 | ev_stop (EV_A_ (W)w); |
|
|
2709 | --idleall; |
|
|
2710 | } |
|
|
2711 | |
|
|
2712 | EV_FREQUENT_CHECK; |
|
|
2713 | } |
|
|
2714 | #endif |
|
|
2715 | |
|
|
2716 | void |
|
|
2717 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2718 | { |
|
|
2719 | if (expect_false (ev_is_active (w))) |
|
|
2720 | return; |
|
|
2721 | |
|
|
2722 | EV_FREQUENT_CHECK; |
|
|
2723 | |
|
|
2724 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2725 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2726 | prepares [preparecnt - 1] = w; |
|
|
2727 | |
|
|
2728 | EV_FREQUENT_CHECK; |
|
|
2729 | } |
|
|
2730 | |
|
|
2731 | void |
|
|
2732 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2733 | { |
|
|
2734 | clear_pending (EV_A_ (W)w); |
|
|
2735 | if (expect_false (!ev_is_active (w))) |
|
|
2736 | return; |
|
|
2737 | |
|
|
2738 | EV_FREQUENT_CHECK; |
|
|
2739 | |
|
|
2740 | { |
|
|
2741 | int active = ev_active (w); |
|
|
2742 | |
|
|
2743 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2744 | ev_active (prepares [active - 1]) = active; |
|
|
2745 | } |
|
|
2746 | |
|
|
2747 | ev_stop (EV_A_ (W)w); |
|
|
2748 | |
|
|
2749 | EV_FREQUENT_CHECK; |
|
|
2750 | } |
|
|
2751 | |
|
|
2752 | void |
|
|
2753 | ev_check_start (EV_P_ ev_check *w) |
|
|
2754 | { |
|
|
2755 | if (expect_false (ev_is_active (w))) |
|
|
2756 | return; |
|
|
2757 | |
|
|
2758 | EV_FREQUENT_CHECK; |
|
|
2759 | |
|
|
2760 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
2761 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
2762 | checks [checkcnt - 1] = w; |
|
|
2763 | |
|
|
2764 | EV_FREQUENT_CHECK; |
|
|
2765 | } |
|
|
2766 | |
|
|
2767 | void |
|
|
2768 | ev_check_stop (EV_P_ ev_check *w) |
|
|
2769 | { |
|
|
2770 | clear_pending (EV_A_ (W)w); |
|
|
2771 | if (expect_false (!ev_is_active (w))) |
|
|
2772 | return; |
|
|
2773 | |
|
|
2774 | EV_FREQUENT_CHECK; |
|
|
2775 | |
|
|
2776 | { |
|
|
2777 | int active = ev_active (w); |
|
|
2778 | |
|
|
2779 | checks [active - 1] = checks [--checkcnt]; |
|
|
2780 | ev_active (checks [active - 1]) = active; |
|
|
2781 | } |
|
|
2782 | |
|
|
2783 | ev_stop (EV_A_ (W)w); |
|
|
2784 | |
|
|
2785 | EV_FREQUENT_CHECK; |
|
|
2786 | } |
|
|
2787 | |
|
|
2788 | #if EV_EMBED_ENABLE |
|
|
2789 | void noinline |
|
|
2790 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2791 | { |
|
|
2792 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2793 | } |
|
|
2794 | |
|
|
2795 | static void |
|
|
2796 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2797 | { |
|
|
2798 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2799 | |
|
|
2800 | if (ev_cb (w)) |
|
|
2801 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2802 | else |
|
|
2803 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2804 | } |
|
|
2805 | |
|
|
2806 | static void |
|
|
2807 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2808 | { |
|
|
2809 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2810 | |
|
|
2811 | { |
|
|
2812 | struct ev_loop *loop = w->other; |
|
|
2813 | |
|
|
2814 | while (fdchangecnt) |
|
|
2815 | { |
|
|
2816 | fd_reify (EV_A); |
|
|
2817 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
|
|
2818 | } |
|
|
2819 | } |
|
|
2820 | } |
|
|
2821 | |
|
|
2822 | #if 0 |
|
|
2823 | static void |
|
|
2824 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
|
|
2825 | { |
|
|
2826 | ev_idle_stop (EV_A_ idle); |
|
|
2827 | } |
|
|
2828 | #endif |
|
|
2829 | |
|
|
2830 | void |
|
|
2831 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2832 | { |
|
|
2833 | if (expect_false (ev_is_active (w))) |
|
|
2834 | return; |
|
|
2835 | |
|
|
2836 | { |
|
|
2837 | struct ev_loop *loop = w->other; |
|
|
2838 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2839 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2840 | } |
|
|
2841 | |
|
|
2842 | EV_FREQUENT_CHECK; |
|
|
2843 | |
|
|
2844 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2845 | ev_io_start (EV_A_ &w->io); |
|
|
2846 | |
|
|
2847 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2848 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2849 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2850 | |
|
|
2851 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2852 | |
|
|
2853 | ev_start (EV_A_ (W)w, 1); |
|
|
2854 | |
|
|
2855 | EV_FREQUENT_CHECK; |
|
|
2856 | } |
|
|
2857 | |
|
|
2858 | void |
|
|
2859 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2860 | { |
|
|
2861 | clear_pending (EV_A_ (W)w); |
|
|
2862 | if (expect_false (!ev_is_active (w))) |
|
|
2863 | return; |
|
|
2864 | |
|
|
2865 | EV_FREQUENT_CHECK; |
|
|
2866 | |
|
|
2867 | ev_io_stop (EV_A_ &w->io); |
|
|
2868 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2869 | |
|
|
2870 | ev_stop (EV_A_ (W)w); |
|
|
2871 | |
|
|
2872 | EV_FREQUENT_CHECK; |
|
|
2873 | } |
|
|
2874 | #endif |
|
|
2875 | |
|
|
2876 | #if EV_FORK_ENABLE |
|
|
2877 | void |
|
|
2878 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2879 | { |
|
|
2880 | if (expect_false (ev_is_active (w))) |
|
|
2881 | return; |
|
|
2882 | |
|
|
2883 | EV_FREQUENT_CHECK; |
|
|
2884 | |
|
|
2885 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2886 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2887 | forks [forkcnt - 1] = w; |
|
|
2888 | |
|
|
2889 | EV_FREQUENT_CHECK; |
|
|
2890 | } |
|
|
2891 | |
|
|
2892 | void |
|
|
2893 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2894 | { |
|
|
2895 | clear_pending (EV_A_ (W)w); |
|
|
2896 | if (expect_false (!ev_is_active (w))) |
|
|
2897 | return; |
|
|
2898 | |
|
|
2899 | EV_FREQUENT_CHECK; |
|
|
2900 | |
|
|
2901 | { |
|
|
2902 | int active = ev_active (w); |
|
|
2903 | |
|
|
2904 | forks [active - 1] = forks [--forkcnt]; |
|
|
2905 | ev_active (forks [active - 1]) = active; |
|
|
2906 | } |
|
|
2907 | |
|
|
2908 | ev_stop (EV_A_ (W)w); |
|
|
2909 | |
|
|
2910 | EV_FREQUENT_CHECK; |
|
|
2911 | } |
|
|
2912 | #endif |
|
|
2913 | |
|
|
2914 | #if EV_ASYNC_ENABLE |
|
|
2915 | void |
|
|
2916 | ev_async_start (EV_P_ ev_async *w) |
|
|
2917 | { |
|
|
2918 | if (expect_false (ev_is_active (w))) |
|
|
2919 | return; |
|
|
2920 | |
|
|
2921 | evpipe_init (EV_A); |
|
|
2922 | |
|
|
2923 | EV_FREQUENT_CHECK; |
|
|
2924 | |
|
|
2925 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2926 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2927 | asyncs [asynccnt - 1] = w; |
|
|
2928 | |
|
|
2929 | EV_FREQUENT_CHECK; |
|
|
2930 | } |
|
|
2931 | |
|
|
2932 | void |
|
|
2933 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2934 | { |
|
|
2935 | clear_pending (EV_A_ (W)w); |
|
|
2936 | if (expect_false (!ev_is_active (w))) |
|
|
2937 | return; |
|
|
2938 | |
|
|
2939 | EV_FREQUENT_CHECK; |
|
|
2940 | |
|
|
2941 | { |
|
|
2942 | int active = ev_active (w); |
|
|
2943 | |
|
|
2944 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2945 | ev_active (asyncs [active - 1]) = active; |
|
|
2946 | } |
|
|
2947 | |
|
|
2948 | ev_stop (EV_A_ (W)w); |
|
|
2949 | |
|
|
2950 | EV_FREQUENT_CHECK; |
|
|
2951 | } |
|
|
2952 | |
|
|
2953 | void |
|
|
2954 | ev_async_send (EV_P_ ev_async *w) |
|
|
2955 | { |
|
|
2956 | w->sent = 1; |
|
|
2957 | evpipe_write (EV_A_ &gotasync); |
|
|
2958 | } |
|
|
2959 | #endif |
683 | |
2960 | |
684 | /*****************************************************************************/ |
2961 | /*****************************************************************************/ |
685 | #if 1 |
2962 | |
|
|
2963 | struct ev_once |
|
|
2964 | { |
|
|
2965 | ev_io io; |
|
|
2966 | ev_timer to; |
|
|
2967 | void (*cb)(int revents, void *arg); |
|
|
2968 | void *arg; |
|
|
2969 | }; |
686 | |
2970 | |
687 | static void |
2971 | static void |
688 | sin_cb (struct ev_io *w, int revents) |
2972 | once_cb (EV_P_ struct ev_once *once, int revents) |
689 | { |
2973 | { |
690 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
2974 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
2975 | void *arg = once->arg; |
|
|
2976 | |
|
|
2977 | ev_io_stop (EV_A_ &once->io); |
|
|
2978 | ev_timer_stop (EV_A_ &once->to); |
|
|
2979 | ev_free (once); |
|
|
2980 | |
|
|
2981 | cb (revents, arg); |
691 | } |
2982 | } |
692 | |
2983 | |
693 | static void |
2984 | static void |
694 | ocb (struct ev_timer *w, int revents) |
2985 | once_cb_io (EV_P_ ev_io *w, int revents) |
695 | { |
2986 | { |
696 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
2987 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
697 | evtimer_stop (w); |
|
|
698 | evtimer_start (w); |
|
|
699 | } |
2988 | } |
700 | |
2989 | |
701 | static void |
2990 | static void |
702 | scb (struct ev_signal *w, int revents) |
2991 | once_cb_to (EV_P_ ev_timer *w, int revents) |
703 | { |
2992 | { |
704 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
2993 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
705 | } |
2994 | } |
706 | |
2995 | |
707 | int main (void) |
2996 | void |
|
|
2997 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
708 | { |
2998 | { |
709 | struct ev_io sin; |
2999 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
710 | |
3000 | |
711 | ev_init (0); |
3001 | if (expect_false (!once)) |
712 | |
|
|
713 | evw_init (&sin, sin_cb, 55); |
|
|
714 | evio_set (&sin, 0, EV_READ); |
|
|
715 | evio_start (&sin); |
|
|
716 | |
|
|
717 | struct ev_timer t[10000]; |
|
|
718 | |
|
|
719 | #if 1 |
|
|
720 | int i; |
|
|
721 | for (i = 0; i < 10000; ++i) |
|
|
722 | { |
|
|
723 | struct ev_timer *w = t + i; |
|
|
724 | evw_init (w, ocb, i); |
|
|
725 | evtimer_set_abs (w, drand48 (), 0.99775533); |
|
|
726 | evtimer_start (w); |
|
|
727 | if (drand48 () < 0.5) |
|
|
728 | evtimer_stop (w); |
|
|
729 | } |
3002 | { |
730 | #endif |
3003 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
731 | |
|
|
732 | struct ev_timer t1; |
|
|
733 | evw_init (&t1, ocb, 0); |
|
|
734 | evtimer_set_abs (&t1, 5, 10); |
|
|
735 | evtimer_start (&t1); |
|
|
736 | |
|
|
737 | struct ev_signal sig; |
|
|
738 | evw_init (&sig, scb, 65535); |
|
|
739 | evsignal_set (&sig, SIGQUIT); |
|
|
740 | evsignal_start (&sig); |
|
|
741 | |
|
|
742 | ev_loop (0); |
|
|
743 | |
|
|
744 | return 0; |
3004 | return; |
745 | } |
3005 | } |
746 | |
3006 | |
747 | #endif |
3007 | once->cb = cb; |
|
|
3008 | once->arg = arg; |
748 | |
3009 | |
|
|
3010 | ev_init (&once->io, once_cb_io); |
|
|
3011 | if (fd >= 0) |
|
|
3012 | { |
|
|
3013 | ev_io_set (&once->io, fd, events); |
|
|
3014 | ev_io_start (EV_A_ &once->io); |
|
|
3015 | } |
749 | |
3016 | |
|
|
3017 | ev_init (&once->to, once_cb_to); |
|
|
3018 | if (timeout >= 0.) |
|
|
3019 | { |
|
|
3020 | ev_timer_set (&once->to, timeout, 0.); |
|
|
3021 | ev_timer_start (EV_A_ &once->to); |
|
|
3022 | } |
|
|
3023 | } |
750 | |
3024 | |
|
|
3025 | #if EV_MULTIPLICITY |
|
|
3026 | #include "ev_wrap.h" |
|
|
3027 | #endif |
751 | |
3028 | |
|
|
3029 | #ifdef __cplusplus |
|
|
3030 | } |
|
|
3031 | #endif |
|
|
3032 | |