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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> |
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136 | #include <fcntl.h> |
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137 | #include <stddef.h> |
3 | |
138 | |
4 | #include <stdio.h> |
139 | #include <stdio.h> |
5 | |
140 | |
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141 | #include <assert.h> |
6 | #include <errno.h> |
142 | #include <errno.h> |
7 | #include <sys/time.h> |
143 | #include <sys/types.h> |
8 | #include <time.h> |
144 | #include <time.h> |
9 | |
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 | # define EV_USE_MONOTONIC 0 |
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170 | #endif |
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171 | |
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172 | #ifndef EV_USE_REALTIME |
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173 | # define EV_USE_REALTIME 0 |
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174 | #endif |
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175 | |
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176 | #ifndef EV_USE_NANOSLEEP |
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177 | # define EV_USE_NANOSLEEP 0 |
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178 | #endif |
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179 | |
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180 | #ifndef EV_USE_SELECT |
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181 | # define EV_USE_SELECT 1 |
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182 | #endif |
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183 | |
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184 | #ifndef EV_USE_POLL |
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185 | # ifdef _WIN32 |
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186 | # define EV_USE_POLL 0 |
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187 | # else |
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188 | # define EV_USE_POLL 1 |
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189 | # endif |
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190 | #endif |
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191 | |
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192 | #ifndef EV_USE_EPOLL |
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193 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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194 | # define EV_USE_EPOLL 1 |
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195 | # else |
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196 | # define EV_USE_EPOLL 0 |
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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_KQUEUE |
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201 | # define EV_USE_KQUEUE 0 |
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202 | #endif |
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203 | |
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204 | #ifndef EV_USE_PORT |
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205 | # define EV_USE_PORT 0 |
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206 | #endif |
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207 | |
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208 | #ifndef EV_USE_INOTIFY |
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209 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
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210 | # define EV_USE_INOTIFY 1 |
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211 | # else |
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212 | # define EV_USE_INOTIFY 0 |
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213 | # endif |
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214 | #endif |
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215 | |
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216 | #ifndef EV_PID_HASHSIZE |
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217 | # if EV_MINIMAL |
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218 | # define EV_PID_HASHSIZE 1 |
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219 | # else |
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220 | # define EV_PID_HASHSIZE 16 |
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221 | # endif |
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222 | #endif |
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223 | |
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224 | #ifndef EV_INOTIFY_HASHSIZE |
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225 | # if EV_MINIMAL |
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226 | # define EV_INOTIFY_HASHSIZE 1 |
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227 | # else |
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228 | # define EV_INOTIFY_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_USE_EVENTFD |
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233 | # if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
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234 | # define EV_USE_EVENTFD 1 |
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235 | # else |
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236 | # define EV_USE_EVENTFD 0 |
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237 | # endif |
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238 | #endif |
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239 | |
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240 | /* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
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241 | |
10 | #ifdef CLOCK_MONOTONIC |
242 | #ifndef CLOCK_MONOTONIC |
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243 | # undef EV_USE_MONOTONIC |
11 | # define HAVE_MONOTONIC 1 |
244 | # define EV_USE_MONOTONIC 0 |
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245 | #endif |
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246 | |
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247 | #ifndef CLOCK_REALTIME |
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248 | # undef EV_USE_REALTIME |
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249 | # define EV_USE_REALTIME 0 |
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250 | #endif |
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251 | |
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252 | #if !EV_STAT_ENABLE |
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253 | # undef EV_USE_INOTIFY |
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254 | # define EV_USE_INOTIFY 0 |
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255 | #endif |
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256 | |
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257 | #if !EV_USE_NANOSLEEP |
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258 | # ifndef _WIN32 |
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259 | # include <sys/select.h> |
12 | #endif |
260 | # endif |
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261 | #endif |
13 | |
262 | |
14 | #define HAVE_EPOLL 1 |
263 | #if EV_USE_INOTIFY |
15 | #define HAVE_REALTIME 1 |
264 | # include <sys/inotify.h> |
16 | #define HAVE_SELECT 0 |
265 | #endif |
17 | |
266 | |
18 | #define MAX_BLOCKTIME 60. |
267 | #if EV_SELECT_IS_WINSOCKET |
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268 | # include <winsock.h> |
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269 | #endif |
19 | |
270 | |
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271 | #if EV_USE_EVENTFD |
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272 | /* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
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273 | # include <stdint.h> |
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274 | # ifdef __cplusplus |
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275 | extern "C" { |
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276 | # endif |
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277 | int eventfd (unsigned int initval, int flags); |
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278 | # ifdef __cplusplus |
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279 | } |
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280 | # endif |
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281 | #endif |
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282 | |
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283 | /**/ |
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284 | |
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285 | /* |
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286 | * This is used to avoid floating point rounding problems. |
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287 | * It is added to ev_rt_now when scheduling periodics |
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288 | * to ensure progress, time-wise, even when rounding |
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289 | * errors are against us. |
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290 | * This value is good at least till the year 4000. |
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291 | * Better solutions welcome. |
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292 | */ |
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293 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
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294 | |
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295 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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296 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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297 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
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298 | |
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299 | #if __GNUC__ >= 4 |
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300 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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301 | # define noinline __attribute__ ((noinline)) |
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302 | #else |
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303 | # define expect(expr,value) (expr) |
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304 | # define noinline |
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305 | # if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
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306 | # define inline |
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307 | # endif |
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308 | #endif |
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309 | |
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310 | #define expect_false(expr) expect ((expr) != 0, 0) |
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311 | #define expect_true(expr) expect ((expr) != 0, 1) |
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312 | #define inline_size static inline |
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313 | |
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314 | #if EV_MINIMAL |
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315 | # define inline_speed static noinline |
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316 | #else |
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317 | # define inline_speed static inline |
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318 | #endif |
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319 | |
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320 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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321 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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322 | |
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323 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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324 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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325 | |
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326 | typedef ev_watcher *W; |
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327 | typedef ev_watcher_list *WL; |
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328 | typedef ev_watcher_time *WT; |
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329 | |
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330 | #if EV_USE_MONOTONIC |
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331 | /* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
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332 | /* giving it a reasonably high chance of working on typical architetcures */ |
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333 | static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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334 | #endif |
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335 | |
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336 | #ifdef _WIN32 |
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337 | # include "ev_win32.c" |
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338 | #endif |
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339 | |
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340 | /*****************************************************************************/ |
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341 | |
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342 | static void (*syserr_cb)(const char *msg); |
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343 | |
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344 | void |
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345 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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346 | { |
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347 | syserr_cb = cb; |
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348 | } |
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349 | |
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350 | static void noinline |
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351 | syserr (const char *msg) |
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352 | { |
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353 | if (!msg) |
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354 | msg = "(libev) system error"; |
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355 | |
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356 | if (syserr_cb) |
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357 | syserr_cb (msg); |
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358 | else |
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359 | { |
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360 | perror (msg); |
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361 | abort (); |
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362 | } |
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363 | } |
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364 | |
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365 | static void * |
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366 | ev_realloc_emul (void *ptr, long size) |
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367 | { |
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368 | /* some systems, notably openbsd and darwin, fail to properly |
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369 | * implement realloc (x, 0) (as required by both ansi c-98 and |
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370 | * the single unix specification, so work around them here. |
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371 | */ |
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372 | |
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373 | if (size) |
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374 | return realloc (ptr, size); |
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375 | |
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376 | free (ptr); |
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377 | return 0; |
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378 | } |
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379 | |
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380 | static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
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381 | |
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382 | void |
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383 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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384 | { |
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385 | alloc = cb; |
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386 | } |
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387 | |
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388 | inline_speed void * |
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389 | ev_realloc (void *ptr, long size) |
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390 | { |
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391 | ptr = alloc (ptr, size); |
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392 | |
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393 | if (!ptr && size) |
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394 | { |
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395 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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396 | abort (); |
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397 | } |
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398 | |
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399 | return ptr; |
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400 | } |
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401 | |
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402 | #define ev_malloc(size) ev_realloc (0, (size)) |
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403 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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404 | |
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405 | /*****************************************************************************/ |
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406 | |
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407 | typedef struct |
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408 | { |
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409 | WL head; |
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410 | unsigned char events; |
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411 | unsigned char reify; |
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412 | #if EV_SELECT_IS_WINSOCKET |
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413 | SOCKET handle; |
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414 | #endif |
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415 | } ANFD; |
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416 | |
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417 | typedef struct |
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418 | { |
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419 | W w; |
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420 | int events; |
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421 | } ANPENDING; |
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422 | |
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423 | #if EV_USE_INOTIFY |
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424 | typedef struct |
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425 | { |
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426 | WL head; |
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427 | } ANFS; |
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428 | #endif |
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429 | |
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430 | #if EV_MULTIPLICITY |
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431 | |
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432 | struct ev_loop |
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433 | { |
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434 | ev_tstamp ev_rt_now; |
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435 | #define ev_rt_now ((loop)->ev_rt_now) |
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436 | #define VAR(name,decl) decl; |
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437 | #include "ev_vars.h" |
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438 | #undef VAR |
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439 | }; |
20 | #include "ev.h" |
440 | #include "ev_wrap.h" |
21 | |
441 | |
22 | struct ev_watcher { |
442 | static struct ev_loop default_loop_struct; |
23 | EV_WATCHER (ev_watcher); |
443 | struct ev_loop *ev_default_loop_ptr; |
24 | }; |
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25 | |
444 | |
26 | struct ev_watcher_list { |
445 | #else |
27 | EV_WATCHER_LIST (ev_watcher_list); |
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28 | }; |
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29 | |
446 | |
30 | ev_tstamp ev_now; |
447 | ev_tstamp ev_rt_now; |
31 | int ev_method; |
448 | #define VAR(name,decl) static decl; |
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449 | #include "ev_vars.h" |
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450 | #undef VAR |
32 | |
451 | |
33 | static int have_monotonic; /* runtime */ |
452 | static int ev_default_loop_ptr; |
34 | |
453 | |
35 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
454 | #endif |
36 | static void (*method_reify)(void); |
455 | |
37 | static void (*method_poll)(ev_tstamp timeout); |
456 | /*****************************************************************************/ |
38 | |
457 | |
39 | ev_tstamp |
458 | ev_tstamp |
40 | ev_time (void) |
459 | ev_time (void) |
41 | { |
460 | { |
42 | #if HAVE_REALTIME |
461 | #if EV_USE_REALTIME |
43 | struct timespec ts; |
462 | struct timespec ts; |
44 | clock_gettime (CLOCK_REALTIME, &ts); |
463 | clock_gettime (CLOCK_REALTIME, &ts); |
45 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
464 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
46 | #else |
465 | #else |
47 | struct timeval tv; |
466 | struct timeval tv; |
48 | gettimeofday (&tv, 0); |
467 | gettimeofday (&tv, 0); |
49 | return tv.tv_sec + tv.tv_usec * 1e-6; |
468 | return tv.tv_sec + tv.tv_usec * 1e-6; |
50 | #endif |
469 | #endif |
51 | } |
470 | } |
52 | |
471 | |
53 | static ev_tstamp |
472 | ev_tstamp inline_size |
54 | get_clock (void) |
473 | get_clock (void) |
55 | { |
474 | { |
56 | #if HAVE_MONOTONIC |
475 | #if EV_USE_MONOTONIC |
57 | if (have_monotonic) |
476 | if (expect_true (have_monotonic)) |
58 | { |
477 | { |
59 | struct timespec ts; |
478 | struct timespec ts; |
60 | clock_gettime (CLOCK_MONOTONIC, &ts); |
479 | clock_gettime (CLOCK_MONOTONIC, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
480 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | } |
481 | } |
63 | #endif |
482 | #endif |
64 | |
483 | |
65 | return ev_time (); |
484 | return ev_time (); |
66 | } |
485 | } |
67 | |
486 | |
|
|
487 | #if EV_MULTIPLICITY |
|
|
488 | ev_tstamp |
|
|
489 | ev_now (EV_P) |
|
|
490 | { |
|
|
491 | return ev_rt_now; |
|
|
492 | } |
|
|
493 | #endif |
|
|
494 | |
|
|
495 | void |
|
|
496 | ev_sleep (ev_tstamp delay) |
|
|
497 | { |
|
|
498 | if (delay > 0.) |
|
|
499 | { |
|
|
500 | #if EV_USE_NANOSLEEP |
|
|
501 | struct timespec ts; |
|
|
502 | |
|
|
503 | ts.tv_sec = (time_t)delay; |
|
|
504 | ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
|
|
505 | |
|
|
506 | nanosleep (&ts, 0); |
|
|
507 | #elif defined(_WIN32) |
|
|
508 | Sleep ((unsigned long)(delay * 1e3)); |
|
|
509 | #else |
|
|
510 | struct timeval tv; |
|
|
511 | |
|
|
512 | tv.tv_sec = (time_t)delay; |
|
|
513 | tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
|
|
514 | |
|
|
515 | select (0, 0, 0, 0, &tv); |
|
|
516 | #endif |
|
|
517 | } |
|
|
518 | } |
|
|
519 | |
|
|
520 | /*****************************************************************************/ |
|
|
521 | |
|
|
522 | int inline_size |
|
|
523 | array_nextsize (int elem, int cur, int cnt) |
|
|
524 | { |
|
|
525 | int ncur = cur + 1; |
|
|
526 | |
|
|
527 | do |
|
|
528 | ncur <<= 1; |
|
|
529 | while (cnt > ncur); |
|
|
530 | |
|
|
531 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
|
|
532 | if (elem * ncur > 4096) |
|
|
533 | { |
|
|
534 | ncur *= elem; |
|
|
535 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
|
|
536 | ncur = ncur - sizeof (void *) * 4; |
|
|
537 | ncur /= elem; |
|
|
538 | } |
|
|
539 | |
|
|
540 | return ncur; |
|
|
541 | } |
|
|
542 | |
|
|
543 | static noinline void * |
|
|
544 | array_realloc (int elem, void *base, int *cur, int cnt) |
|
|
545 | { |
|
|
546 | *cur = array_nextsize (elem, *cur, cnt); |
|
|
547 | return ev_realloc (base, elem * *cur); |
|
|
548 | } |
|
|
549 | |
68 | #define array_needsize(base,cur,cnt,init) \ |
550 | #define array_needsize(type,base,cur,cnt,init) \ |
69 | if ((cnt) > cur) \ |
551 | if (expect_false ((cnt) > (cur))) \ |
70 | { \ |
552 | { \ |
71 | int newcnt = cur ? cur << 1 : 16; \ |
553 | int ocur_ = (cur); \ |
72 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
554 | (base) = (type *)array_realloc \ |
73 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
555 | (sizeof (type), (base), &(cur), (cnt)); \ |
74 | init (base + cur, newcnt - cur); \ |
556 | init ((base) + (ocur_), (cur) - ocur_); \ |
75 | cur = newcnt; \ |
557 | } |
|
|
558 | |
|
|
559 | #if 0 |
|
|
560 | #define array_slim(type,stem) \ |
|
|
561 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
562 | { \ |
|
|
563 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
564 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
565 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
566 | } |
|
|
567 | #endif |
|
|
568 | |
|
|
569 | #define array_free(stem, idx) \ |
|
|
570 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
|
|
571 | |
|
|
572 | /*****************************************************************************/ |
|
|
573 | |
|
|
574 | void noinline |
|
|
575 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
576 | { |
|
|
577 | W w_ = (W)w; |
|
|
578 | int pri = ABSPRI (w_); |
|
|
579 | |
|
|
580 | if (expect_false (w_->pending)) |
|
|
581 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
582 | else |
|
|
583 | { |
|
|
584 | w_->pending = ++pendingcnt [pri]; |
|
|
585 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
586 | pendings [pri][w_->pending - 1].w = w_; |
|
|
587 | pendings [pri][w_->pending - 1].events = revents; |
|
|
588 | } |
|
|
589 | } |
|
|
590 | |
|
|
591 | void inline_speed |
|
|
592 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
593 | { |
|
|
594 | int i; |
|
|
595 | |
|
|
596 | for (i = 0; i < eventcnt; ++i) |
|
|
597 | ev_feed_event (EV_A_ events [i], type); |
|
|
598 | } |
|
|
599 | |
|
|
600 | /*****************************************************************************/ |
|
|
601 | |
|
|
602 | void inline_size |
|
|
603 | anfds_init (ANFD *base, int count) |
|
|
604 | { |
|
|
605 | while (count--) |
|
|
606 | { |
|
|
607 | base->head = 0; |
|
|
608 | base->events = EV_NONE; |
|
|
609 | base->reify = 0; |
|
|
610 | |
|
|
611 | ++base; |
|
|
612 | } |
|
|
613 | } |
|
|
614 | |
|
|
615 | void inline_speed |
|
|
616 | fd_event (EV_P_ int fd, int revents) |
|
|
617 | { |
|
|
618 | ANFD *anfd = anfds + fd; |
|
|
619 | ev_io *w; |
|
|
620 | |
|
|
621 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
622 | { |
|
|
623 | int ev = w->events & revents; |
|
|
624 | |
|
|
625 | if (ev) |
|
|
626 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
627 | } |
|
|
628 | } |
|
|
629 | |
|
|
630 | void |
|
|
631 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
632 | { |
|
|
633 | if (fd >= 0 && fd < anfdmax) |
|
|
634 | fd_event (EV_A_ fd, revents); |
|
|
635 | } |
|
|
636 | |
|
|
637 | void inline_size |
|
|
638 | fd_reify (EV_P) |
|
|
639 | { |
|
|
640 | int i; |
|
|
641 | |
|
|
642 | for (i = 0; i < fdchangecnt; ++i) |
|
|
643 | { |
|
|
644 | int fd = fdchanges [i]; |
|
|
645 | ANFD *anfd = anfds + fd; |
|
|
646 | ev_io *w; |
|
|
647 | |
|
|
648 | unsigned char events = 0; |
|
|
649 | |
|
|
650 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
651 | events |= (unsigned char)w->events; |
|
|
652 | |
|
|
653 | #if EV_SELECT_IS_WINSOCKET |
|
|
654 | if (events) |
|
|
655 | { |
|
|
656 | unsigned long argp; |
|
|
657 | #ifdef EV_FD_TO_WIN32_HANDLE |
|
|
658 | anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
|
|
659 | #else |
|
|
660 | anfd->handle = _get_osfhandle (fd); |
|
|
661 | #endif |
|
|
662 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
663 | } |
|
|
664 | #endif |
|
|
665 | |
|
|
666 | { |
|
|
667 | unsigned char o_events = anfd->events; |
|
|
668 | unsigned char o_reify = anfd->reify; |
|
|
669 | |
|
|
670 | anfd->reify = 0; |
|
|
671 | anfd->events = events; |
|
|
672 | |
|
|
673 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
674 | backend_modify (EV_A_ fd, o_events, events); |
76 | } |
675 | } |
|
|
676 | } |
|
|
677 | |
|
|
678 | fdchangecnt = 0; |
|
|
679 | } |
|
|
680 | |
|
|
681 | void inline_size |
|
|
682 | fd_change (EV_P_ int fd, int flags) |
|
|
683 | { |
|
|
684 | unsigned char reify = anfds [fd].reify; |
|
|
685 | anfds [fd].reify |= flags; |
|
|
686 | |
|
|
687 | if (expect_true (!reify)) |
|
|
688 | { |
|
|
689 | ++fdchangecnt; |
|
|
690 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
691 | fdchanges [fdchangecnt - 1] = fd; |
|
|
692 | } |
|
|
693 | } |
|
|
694 | |
|
|
695 | void inline_speed |
|
|
696 | fd_kill (EV_P_ int fd) |
|
|
697 | { |
|
|
698 | ev_io *w; |
|
|
699 | |
|
|
700 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
701 | { |
|
|
702 | ev_io_stop (EV_A_ w); |
|
|
703 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
704 | } |
|
|
705 | } |
|
|
706 | |
|
|
707 | int inline_size |
|
|
708 | fd_valid (int fd) |
|
|
709 | { |
|
|
710 | #ifdef _WIN32 |
|
|
711 | return _get_osfhandle (fd) != -1; |
|
|
712 | #else |
|
|
713 | return fcntl (fd, F_GETFD) != -1; |
|
|
714 | #endif |
|
|
715 | } |
|
|
716 | |
|
|
717 | /* called on EBADF to verify fds */ |
|
|
718 | static void noinline |
|
|
719 | fd_ebadf (EV_P) |
|
|
720 | { |
|
|
721 | int fd; |
|
|
722 | |
|
|
723 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
724 | if (anfds [fd].events) |
|
|
725 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
726 | fd_kill (EV_A_ fd); |
|
|
727 | } |
|
|
728 | |
|
|
729 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
730 | static void noinline |
|
|
731 | fd_enomem (EV_P) |
|
|
732 | { |
|
|
733 | int fd; |
|
|
734 | |
|
|
735 | for (fd = anfdmax; fd--; ) |
|
|
736 | if (anfds [fd].events) |
|
|
737 | { |
|
|
738 | fd_kill (EV_A_ fd); |
|
|
739 | return; |
|
|
740 | } |
|
|
741 | } |
|
|
742 | |
|
|
743 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
744 | static void noinline |
|
|
745 | fd_rearm_all (EV_P) |
|
|
746 | { |
|
|
747 | int fd; |
|
|
748 | |
|
|
749 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
750 | if (anfds [fd].events) |
|
|
751 | { |
|
|
752 | anfds [fd].events = 0; |
|
|
753 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
754 | } |
|
|
755 | } |
|
|
756 | |
|
|
757 | /*****************************************************************************/ |
|
|
758 | |
|
|
759 | void inline_speed |
|
|
760 | upheap (WT *heap, int k) |
|
|
761 | { |
|
|
762 | WT w = heap [k]; |
|
|
763 | |
|
|
764 | while (k) |
|
|
765 | { |
|
|
766 | int p = (k - 1) >> 1; |
|
|
767 | |
|
|
768 | if (heap [p]->at <= w->at) |
|
|
769 | break; |
|
|
770 | |
|
|
771 | heap [k] = heap [p]; |
|
|
772 | ((W)heap [k])->active = k + 1; |
|
|
773 | k = p; |
|
|
774 | } |
|
|
775 | |
|
|
776 | heap [k] = w; |
|
|
777 | ((W)heap [k])->active = k + 1; |
|
|
778 | } |
|
|
779 | |
|
|
780 | void inline_speed |
|
|
781 | downheap (WT *heap, int N, int k) |
|
|
782 | { |
|
|
783 | WT w = heap [k]; |
|
|
784 | |
|
|
785 | for (;;) |
|
|
786 | { |
|
|
787 | int c = (k << 1) + 1; |
|
|
788 | |
|
|
789 | if (c >= N) |
|
|
790 | break; |
|
|
791 | |
|
|
792 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
793 | ? 1 : 0; |
|
|
794 | |
|
|
795 | if (w->at <= heap [c]->at) |
|
|
796 | break; |
|
|
797 | |
|
|
798 | heap [k] = heap [c]; |
|
|
799 | ((W)heap [k])->active = k + 1; |
|
|
800 | |
|
|
801 | k = c; |
|
|
802 | } |
|
|
803 | |
|
|
804 | heap [k] = w; |
|
|
805 | ((W)heap [k])->active = k + 1; |
|
|
806 | } |
|
|
807 | |
|
|
808 | void inline_size |
|
|
809 | adjustheap (WT *heap, int N, int k) |
|
|
810 | { |
|
|
811 | upheap (heap, k); |
|
|
812 | downheap (heap, N, k); |
|
|
813 | } |
|
|
814 | |
|
|
815 | /*****************************************************************************/ |
77 | |
816 | |
78 | typedef struct |
817 | typedef struct |
79 | { |
818 | { |
80 | struct ev_io *head; |
819 | WL head; |
81 | unsigned char wev, rev; /* want, received event set */ |
820 | EV_ATOMIC_T gotsig; |
82 | } ANFD; |
821 | } ANSIG; |
83 | |
822 | |
84 | static ANFD *anfds; |
823 | static ANSIG *signals; |
85 | static int anfdmax; |
824 | static int signalmax; |
86 | |
825 | |
87 | static int *fdchanges; |
826 | static EV_ATOMIC_T gotsig; |
88 | static int fdchangemax, fdchangecnt; |
827 | |
|
|
828 | void inline_size |
|
|
829 | signals_init (ANSIG *base, int count) |
|
|
830 | { |
|
|
831 | while (count--) |
|
|
832 | { |
|
|
833 | base->head = 0; |
|
|
834 | base->gotsig = 0; |
|
|
835 | |
|
|
836 | ++base; |
|
|
837 | } |
|
|
838 | } |
|
|
839 | |
|
|
840 | /*****************************************************************************/ |
|
|
841 | |
|
|
842 | void inline_speed |
|
|
843 | fd_intern (int fd) |
|
|
844 | { |
|
|
845 | #ifdef _WIN32 |
|
|
846 | int arg = 1; |
|
|
847 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
848 | #else |
|
|
849 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
850 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
851 | #endif |
|
|
852 | } |
|
|
853 | |
|
|
854 | static void noinline |
|
|
855 | evpipe_init (EV_P) |
|
|
856 | { |
|
|
857 | if (!ev_is_active (&pipeev)) |
|
|
858 | { |
|
|
859 | #if EV_USE_EVENTFD |
|
|
860 | if ((evfd = eventfd (0, 0)) >= 0) |
|
|
861 | { |
|
|
862 | evpipe [0] = -1; |
|
|
863 | fd_intern (evfd); |
|
|
864 | ev_io_set (&pipeev, evfd, EV_READ); |
|
|
865 | } |
|
|
866 | else |
|
|
867 | #endif |
|
|
868 | { |
|
|
869 | while (pipe (evpipe)) |
|
|
870 | syserr ("(libev) error creating signal/async pipe"); |
|
|
871 | |
|
|
872 | fd_intern (evpipe [0]); |
|
|
873 | fd_intern (evpipe [1]); |
|
|
874 | ev_io_set (&pipeev, evpipe [0], EV_READ); |
|
|
875 | } |
|
|
876 | |
|
|
877 | ev_io_start (EV_A_ &pipeev); |
|
|
878 | ev_unref (EV_A); /* watcher should not keep loop alive */ |
|
|
879 | } |
|
|
880 | } |
|
|
881 | |
|
|
882 | void inline_size |
|
|
883 | evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
|
|
884 | { |
|
|
885 | if (!*flag) |
|
|
886 | { |
|
|
887 | int old_errno = errno; /* save errno because write might clobber it */ |
|
|
888 | |
|
|
889 | *flag = 1; |
|
|
890 | |
|
|
891 | #if EV_USE_EVENTFD |
|
|
892 | if (evfd >= 0) |
|
|
893 | { |
|
|
894 | uint64_t counter = 1; |
|
|
895 | write (evfd, &counter, sizeof (uint64_t)); |
|
|
896 | } |
|
|
897 | else |
|
|
898 | #endif |
|
|
899 | write (evpipe [1], &old_errno, 1); |
|
|
900 | |
|
|
901 | errno = old_errno; |
|
|
902 | } |
|
|
903 | } |
89 | |
904 | |
90 | static void |
905 | static void |
91 | anfds_init (ANFD *base, int count) |
906 | pipecb (EV_P_ ev_io *iow, int revents) |
92 | { |
907 | { |
93 | while (count--) |
908 | #if EV_USE_EVENTFD |
94 | { |
909 | if (evfd >= 0) |
95 | base->head = 0; |
|
|
96 | base->wev = base->rev = EV_NONE; |
|
|
97 | ++base; |
|
|
98 | } |
910 | { |
99 | } |
911 | uint64_t counter = 1; |
|
|
912 | read (evfd, &counter, sizeof (uint64_t)); |
|
|
913 | } |
|
|
914 | else |
|
|
915 | #endif |
|
|
916 | { |
|
|
917 | char dummy; |
|
|
918 | read (evpipe [0], &dummy, 1); |
|
|
919 | } |
100 | |
920 | |
101 | typedef struct |
921 | if (gotsig && ev_is_default_loop (EV_A)) |
102 | { |
922 | { |
103 | struct ev_watcher *w; |
923 | int signum; |
104 | int events; |
924 | gotsig = 0; |
105 | } ANPENDING; |
|
|
106 | |
925 | |
107 | static ANPENDING *pendings; |
926 | for (signum = signalmax; signum--; ) |
108 | static int pendingmax, pendingcnt; |
927 | if (signals [signum].gotsig) |
|
|
928 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
929 | } |
|
|
930 | |
|
|
931 | #if EV_ASYNC_ENABLE |
|
|
932 | if (gotasync) |
|
|
933 | { |
|
|
934 | int i; |
|
|
935 | gotasync = 0; |
|
|
936 | |
|
|
937 | for (i = asynccnt; i--; ) |
|
|
938 | if (asyncs [i]->sent) |
|
|
939 | { |
|
|
940 | asyncs [i]->sent = 0; |
|
|
941 | ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
|
|
942 | } |
|
|
943 | } |
|
|
944 | #endif |
|
|
945 | } |
|
|
946 | |
|
|
947 | /*****************************************************************************/ |
109 | |
948 | |
110 | static void |
949 | static void |
111 | event (struct ev_watcher *w, int events) |
950 | ev_sighandler (int signum) |
112 | { |
951 | { |
113 | w->pending = ++pendingcnt; |
952 | #if EV_MULTIPLICITY |
114 | array_needsize (pendings, pendingmax, pendingcnt, ); |
953 | struct ev_loop *loop = &default_loop_struct; |
115 | pendings [pendingcnt - 1].w = w; |
954 | #endif |
116 | pendings [pendingcnt - 1].events = events; |
955 | |
|
|
956 | #if _WIN32 |
|
|
957 | signal (signum, ev_sighandler); |
|
|
958 | #endif |
|
|
959 | |
|
|
960 | signals [signum - 1].gotsig = 1; |
|
|
961 | evpipe_write (EV_A_ &gotsig); |
117 | } |
962 | } |
|
|
963 | |
|
|
964 | void noinline |
|
|
965 | ev_feed_signal_event (EV_P_ int signum) |
|
|
966 | { |
|
|
967 | WL w; |
|
|
968 | |
|
|
969 | #if EV_MULTIPLICITY |
|
|
970 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
971 | #endif |
|
|
972 | |
|
|
973 | --signum; |
|
|
974 | |
|
|
975 | if (signum < 0 || signum >= signalmax) |
|
|
976 | return; |
|
|
977 | |
|
|
978 | signals [signum].gotsig = 0; |
|
|
979 | |
|
|
980 | for (w = signals [signum].head; w; w = w->next) |
|
|
981 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
982 | } |
|
|
983 | |
|
|
984 | /*****************************************************************************/ |
|
|
985 | |
|
|
986 | static WL childs [EV_PID_HASHSIZE]; |
|
|
987 | |
|
|
988 | #ifndef _WIN32 |
|
|
989 | |
|
|
990 | static ev_signal childev; |
|
|
991 | |
|
|
992 | #ifndef WIFCONTINUED |
|
|
993 | # define WIFCONTINUED(status) 0 |
|
|
994 | #endif |
|
|
995 | |
|
|
996 | void inline_speed |
|
|
997 | child_reap (EV_P_ int chain, int pid, int status) |
|
|
998 | { |
|
|
999 | ev_child *w; |
|
|
1000 | int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
|
|
1001 | |
|
|
1002 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
1003 | { |
|
|
1004 | if ((w->pid == pid || !w->pid) |
|
|
1005 | && (!traced || (w->flags & 1))) |
|
|
1006 | { |
|
|
1007 | ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
|
|
1008 | w->rpid = pid; |
|
|
1009 | w->rstatus = status; |
|
|
1010 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
1011 | } |
|
|
1012 | } |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | #ifndef WCONTINUED |
|
|
1016 | # define WCONTINUED 0 |
|
|
1017 | #endif |
118 | |
1018 | |
119 | static void |
1019 | static void |
120 | fd_event (int fd, int events) |
1020 | childcb (EV_P_ ev_signal *sw, int revents) |
121 | { |
1021 | { |
122 | ANFD *anfd = anfds + fd; |
1022 | int pid, status; |
123 | struct ev_io *w; |
|
|
124 | |
1023 | |
125 | for (w = anfd->head; w; w = w->next) |
1024 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
126 | { |
1025 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
127 | int ev = w->events & events; |
1026 | if (!WCONTINUED |
|
|
1027 | || errno != EINVAL |
|
|
1028 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
1029 | return; |
128 | |
1030 | |
129 | if (ev) |
1031 | /* make sure we are called again until all children have been reaped */ |
130 | event ((struct ev_watcher *)w, ev); |
1032 | /* we need to do it this way so that the callback gets called before we continue */ |
131 | } |
1033 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
132 | } |
|
|
133 | |
1034 | |
134 | static struct ev_timer **timers; |
1035 | child_reap (EV_A_ pid, pid, status); |
135 | static int timermax, timercnt; |
1036 | if (EV_PID_HASHSIZE > 1) |
136 | |
1037 | child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
137 | static void |
|
|
138 | upheap (int k) |
|
|
139 | { |
|
|
140 | struct ev_timer *w = timers [k]; |
|
|
141 | |
|
|
142 | while (k && timers [k >> 1]->at > w->at) |
|
|
143 | { |
|
|
144 | timers [k] = timers [k >> 1]; |
|
|
145 | timers [k]->active = k + 1; |
|
|
146 | k >>= 1; |
|
|
147 | } |
|
|
148 | |
|
|
149 | timers [k] = w; |
|
|
150 | timers [k]->active = k + 1; |
|
|
151 | |
|
|
152 | } |
1038 | } |
153 | |
1039 | |
154 | static void |
1040 | #endif |
155 | downheap (int k) |
|
|
156 | { |
|
|
157 | struct ev_timer *w = timers [k]; |
|
|
158 | |
1041 | |
159 | while (k < (timercnt >> 1)) |
1042 | /*****************************************************************************/ |
160 | { |
|
|
161 | int j = k << 1; |
|
|
162 | |
1043 | |
163 | if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at) |
1044 | #if EV_USE_PORT |
164 | ++j; |
1045 | # include "ev_port.c" |
165 | |
1046 | #endif |
166 | if (w->at <= timers [j]->at) |
1047 | #if EV_USE_KQUEUE |
167 | break; |
1048 | # include "ev_kqueue.c" |
168 | |
1049 | #endif |
169 | timers [k] = timers [j]; |
|
|
170 | timers [k]->active = k + 1; |
|
|
171 | k = j; |
|
|
172 | } |
|
|
173 | |
|
|
174 | timers [k] = w; |
|
|
175 | timers [k]->active = k + 1; |
|
|
176 | } |
|
|
177 | |
|
|
178 | static struct ev_signal **signals; |
|
|
179 | static int signalmax, signalcnt; |
|
|
180 | |
|
|
181 | static void |
|
|
182 | signals_init (struct ev_signal **base, int count) |
|
|
183 | { |
|
|
184 | while (count--) |
|
|
185 | *base++ = 0; |
|
|
186 | } |
|
|
187 | |
|
|
188 | #if HAVE_EPOLL |
1050 | #if EV_USE_EPOLL |
189 | # include "ev_epoll.c" |
1051 | # include "ev_epoll.c" |
190 | #endif |
1052 | #endif |
|
|
1053 | #if EV_USE_POLL |
|
|
1054 | # include "ev_poll.c" |
|
|
1055 | #endif |
191 | #if HAVE_SELECT |
1056 | #if EV_USE_SELECT |
192 | # include "ev_select.c" |
1057 | # include "ev_select.c" |
193 | #endif |
1058 | #endif |
194 | |
1059 | |
195 | int ev_init (int flags) |
1060 | int |
|
|
1061 | ev_version_major (void) |
196 | { |
1062 | { |
|
|
1063 | return EV_VERSION_MAJOR; |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | int |
|
|
1067 | ev_version_minor (void) |
|
|
1068 | { |
|
|
1069 | return EV_VERSION_MINOR; |
|
|
1070 | } |
|
|
1071 | |
|
|
1072 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
1073 | int inline_size |
|
|
1074 | enable_secure (void) |
|
|
1075 | { |
|
|
1076 | #ifdef _WIN32 |
|
|
1077 | return 0; |
|
|
1078 | #else |
|
|
1079 | return getuid () != geteuid () |
|
|
1080 | || getgid () != getegid (); |
|
|
1081 | #endif |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | unsigned int |
|
|
1085 | ev_supported_backends (void) |
|
|
1086 | { |
|
|
1087 | unsigned int flags = 0; |
|
|
1088 | |
|
|
1089 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
1090 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
1091 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
1092 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
1093 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
1094 | |
|
|
1095 | return flags; |
|
|
1096 | } |
|
|
1097 | |
|
|
1098 | unsigned int |
|
|
1099 | ev_recommended_backends (void) |
|
|
1100 | { |
|
|
1101 | unsigned int flags = ev_supported_backends (); |
|
|
1102 | |
|
|
1103 | #ifndef __NetBSD__ |
|
|
1104 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
1105 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
1106 | flags &= ~EVBACKEND_KQUEUE; |
|
|
1107 | #endif |
|
|
1108 | #ifdef __APPLE__ |
|
|
1109 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
1110 | flags &= ~EVBACKEND_POLL; |
|
|
1111 | #endif |
|
|
1112 | |
|
|
1113 | return flags; |
|
|
1114 | } |
|
|
1115 | |
|
|
1116 | unsigned int |
|
|
1117 | ev_embeddable_backends (void) |
|
|
1118 | { |
|
|
1119 | int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
|
|
1120 | |
|
|
1121 | /* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
|
|
1122 | /* please fix it and tell me how to detect the fix */ |
|
|
1123 | flags &= ~EVBACKEND_EPOLL; |
|
|
1124 | |
|
|
1125 | return flags; |
|
|
1126 | } |
|
|
1127 | |
|
|
1128 | unsigned int |
|
|
1129 | ev_backend (EV_P) |
|
|
1130 | { |
|
|
1131 | return backend; |
|
|
1132 | } |
|
|
1133 | |
|
|
1134 | unsigned int |
|
|
1135 | ev_loop_count (EV_P) |
|
|
1136 | { |
|
|
1137 | return loop_count; |
|
|
1138 | } |
|
|
1139 | |
|
|
1140 | void |
|
|
1141 | ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1142 | { |
|
|
1143 | io_blocktime = interval; |
|
|
1144 | } |
|
|
1145 | |
|
|
1146 | void |
|
|
1147 | ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
|
|
1148 | { |
|
|
1149 | timeout_blocktime = interval; |
|
|
1150 | } |
|
|
1151 | |
|
|
1152 | static void noinline |
|
|
1153 | loop_init (EV_P_ unsigned int flags) |
|
|
1154 | { |
|
|
1155 | if (!backend) |
|
|
1156 | { |
197 | #if HAVE_MONOTONIC |
1157 | #if EV_USE_MONOTONIC |
198 | { |
1158 | { |
199 | struct timespec ts; |
1159 | struct timespec ts; |
200 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1160 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
201 | have_monotonic = 1; |
1161 | have_monotonic = 1; |
202 | } |
1162 | } |
203 | #endif |
1163 | #endif |
204 | |
1164 | |
205 | ev_now = ev_time (); |
1165 | ev_rt_now = ev_time (); |
|
|
1166 | mn_now = get_clock (); |
|
|
1167 | now_floor = mn_now; |
|
|
1168 | rtmn_diff = ev_rt_now - mn_now; |
206 | |
1169 | |
|
|
1170 | io_blocktime = 0.; |
|
|
1171 | timeout_blocktime = 0.; |
|
|
1172 | backend = 0; |
|
|
1173 | backend_fd = -1; |
|
|
1174 | gotasync = 0; |
|
|
1175 | #if EV_USE_INOTIFY |
|
|
1176 | fs_fd = -2; |
|
|
1177 | #endif |
|
|
1178 | |
|
|
1179 | /* pid check not overridable via env */ |
|
|
1180 | #ifndef _WIN32 |
|
|
1181 | if (flags & EVFLAG_FORKCHECK) |
|
|
1182 | curpid = getpid (); |
|
|
1183 | #endif |
|
|
1184 | |
|
|
1185 | if (!(flags & EVFLAG_NOENV) |
|
|
1186 | && !enable_secure () |
|
|
1187 | && getenv ("LIBEV_FLAGS")) |
|
|
1188 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
1189 | |
|
|
1190 | if (!(flags & 0x0000ffffU)) |
|
|
1191 | flags |= ev_recommended_backends (); |
|
|
1192 | |
|
|
1193 | #if EV_USE_PORT |
|
|
1194 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
1195 | #endif |
|
|
1196 | #if EV_USE_KQUEUE |
|
|
1197 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
1198 | #endif |
207 | #if HAVE_EPOLL |
1199 | #if EV_USE_EPOLL |
208 | if (epoll_init (flags)) |
1200 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
209 | return ev_method; |
|
|
210 | #endif |
1201 | #endif |
|
|
1202 | #if EV_USE_POLL |
|
|
1203 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
1204 | #endif |
211 | #if HAVE_SELECT |
1205 | #if EV_USE_SELECT |
212 | if (select_init (flags)) |
1206 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
213 | return ev_method; |
|
|
214 | #endif |
1207 | #endif |
215 | |
1208 | |
216 | ev_method = EVMETHOD_NONE; |
1209 | ev_init (&pipeev, pipecb); |
217 | return ev_method; |
1210 | ev_set_priority (&pipeev, EV_MAXPRI); |
|
|
1211 | } |
218 | } |
1212 | } |
219 | |
1213 | |
220 | void ev_prefork (void) |
1214 | static void noinline |
221 | { |
1215 | loop_destroy (EV_P) |
222 | } |
|
|
223 | |
|
|
224 | void ev_postfork_parent (void) |
|
|
225 | { |
|
|
226 | } |
|
|
227 | |
|
|
228 | void ev_postfork_child (void) |
|
|
229 | { |
|
|
230 | #if HAVE_EPOLL |
|
|
231 | epoll_postfork_child (); |
|
|
232 | #endif |
|
|
233 | } |
|
|
234 | |
|
|
235 | static void |
|
|
236 | call_pending () |
|
|
237 | { |
1216 | { |
238 | int i; |
1217 | int i; |
239 | |
1218 | |
240 | for (i = 0; i < pendingcnt; ++i) |
1219 | if (ev_is_active (&pipeev)) |
241 | { |
1220 | { |
242 | ANPENDING *p = pendings + i; |
1221 | ev_ref (EV_A); /* signal watcher */ |
|
|
1222 | ev_io_stop (EV_A_ &pipeev); |
243 | |
1223 | |
244 | if (p->w) |
1224 | #if EV_USE_EVENTFD |
|
|
1225 | if (evfd >= 0) |
|
|
1226 | close (evfd); |
|
|
1227 | #endif |
|
|
1228 | |
|
|
1229 | if (evpipe [0] >= 0) |
245 | { |
1230 | { |
246 | p->w->pending = 0; |
1231 | close (evpipe [0]); |
247 | p->w->cb (p->w, p->events); |
1232 | close (evpipe [1]); |
248 | } |
1233 | } |
249 | } |
1234 | } |
250 | |
1235 | |
251 | pendingcnt = 0; |
1236 | #if EV_USE_INOTIFY |
252 | } |
1237 | if (fs_fd >= 0) |
|
|
1238 | close (fs_fd); |
|
|
1239 | #endif |
253 | |
1240 | |
254 | static void |
1241 | if (backend_fd >= 0) |
|
|
1242 | close (backend_fd); |
|
|
1243 | |
|
|
1244 | #if EV_USE_PORT |
|
|
1245 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1246 | #endif |
|
|
1247 | #if EV_USE_KQUEUE |
|
|
1248 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1249 | #endif |
|
|
1250 | #if EV_USE_EPOLL |
|
|
1251 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1252 | #endif |
|
|
1253 | #if EV_USE_POLL |
|
|
1254 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1255 | #endif |
|
|
1256 | #if EV_USE_SELECT |
|
|
1257 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1258 | #endif |
|
|
1259 | |
|
|
1260 | for (i = NUMPRI; i--; ) |
|
|
1261 | { |
|
|
1262 | array_free (pending, [i]); |
|
|
1263 | #if EV_IDLE_ENABLE |
|
|
1264 | array_free (idle, [i]); |
|
|
1265 | #endif |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | ev_free (anfds); anfdmax = 0; |
|
|
1269 | |
|
|
1270 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1271 | array_free (fdchange, EMPTY); |
|
|
1272 | array_free (timer, EMPTY); |
|
|
1273 | #if EV_PERIODIC_ENABLE |
|
|
1274 | array_free (periodic, EMPTY); |
|
|
1275 | #endif |
|
|
1276 | #if EV_FORK_ENABLE |
|
|
1277 | array_free (fork, EMPTY); |
|
|
1278 | #endif |
|
|
1279 | array_free (prepare, EMPTY); |
|
|
1280 | array_free (check, EMPTY); |
|
|
1281 | #if EV_ASYNC_ENABLE |
|
|
1282 | array_free (async, EMPTY); |
|
|
1283 | #endif |
|
|
1284 | |
|
|
1285 | backend = 0; |
|
|
1286 | } |
|
|
1287 | |
|
|
1288 | void inline_size infy_fork (EV_P); |
|
|
1289 | |
|
|
1290 | void inline_size |
|
|
1291 | loop_fork (EV_P) |
|
|
1292 | { |
|
|
1293 | #if EV_USE_PORT |
|
|
1294 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1295 | #endif |
|
|
1296 | #if EV_USE_KQUEUE |
|
|
1297 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1298 | #endif |
|
|
1299 | #if EV_USE_EPOLL |
|
|
1300 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1301 | #endif |
|
|
1302 | #if EV_USE_INOTIFY |
|
|
1303 | infy_fork (EV_A); |
|
|
1304 | #endif |
|
|
1305 | |
|
|
1306 | if (ev_is_active (&pipeev)) |
|
|
1307 | { |
|
|
1308 | /* this "locks" the handlers against writing to the pipe */ |
|
|
1309 | /* while we modify the fd vars */ |
|
|
1310 | gotsig = 1; |
|
|
1311 | #if EV_ASYNC_ENABLE |
|
|
1312 | gotasync = 1; |
|
|
1313 | #endif |
|
|
1314 | |
|
|
1315 | ev_ref (EV_A); |
|
|
1316 | ev_io_stop (EV_A_ &pipeev); |
|
|
1317 | |
|
|
1318 | #if EV_USE_EVENTFD |
|
|
1319 | if (evfd >= 0) |
|
|
1320 | close (evfd); |
|
|
1321 | #endif |
|
|
1322 | |
|
|
1323 | if (evpipe [0] >= 0) |
|
|
1324 | { |
|
|
1325 | close (evpipe [0]); |
|
|
1326 | close (evpipe [1]); |
|
|
1327 | } |
|
|
1328 | |
|
|
1329 | evpipe_init (EV_A); |
|
|
1330 | /* now iterate over everything, in case we missed something */ |
|
|
1331 | pipecb (EV_A_ &pipeev, EV_READ); |
|
|
1332 | } |
|
|
1333 | |
|
|
1334 | postfork = 0; |
|
|
1335 | } |
|
|
1336 | |
|
|
1337 | #if EV_MULTIPLICITY |
|
|
1338 | struct ev_loop * |
|
|
1339 | ev_loop_new (unsigned int flags) |
|
|
1340 | { |
|
|
1341 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1342 | |
|
|
1343 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1344 | |
|
|
1345 | loop_init (EV_A_ flags); |
|
|
1346 | |
|
|
1347 | if (ev_backend (EV_A)) |
|
|
1348 | return loop; |
|
|
1349 | |
|
|
1350 | return 0; |
|
|
1351 | } |
|
|
1352 | |
|
|
1353 | void |
|
|
1354 | ev_loop_destroy (EV_P) |
|
|
1355 | { |
|
|
1356 | loop_destroy (EV_A); |
|
|
1357 | ev_free (loop); |
|
|
1358 | } |
|
|
1359 | |
|
|
1360 | void |
|
|
1361 | ev_loop_fork (EV_P) |
|
|
1362 | { |
|
|
1363 | postfork = 1; /* must be in line with ev_default_fork */ |
|
|
1364 | } |
|
|
1365 | |
|
|
1366 | #endif |
|
|
1367 | |
|
|
1368 | #if EV_MULTIPLICITY |
|
|
1369 | struct ev_loop * |
|
|
1370 | ev_default_loop_init (unsigned int flags) |
|
|
1371 | #else |
|
|
1372 | int |
|
|
1373 | ev_default_loop (unsigned int flags) |
|
|
1374 | #endif |
|
|
1375 | { |
|
|
1376 | if (!ev_default_loop_ptr) |
|
|
1377 | { |
|
|
1378 | #if EV_MULTIPLICITY |
|
|
1379 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1380 | #else |
|
|
1381 | ev_default_loop_ptr = 1; |
|
|
1382 | #endif |
|
|
1383 | |
|
|
1384 | loop_init (EV_A_ flags); |
|
|
1385 | |
|
|
1386 | if (ev_backend (EV_A)) |
|
|
1387 | { |
|
|
1388 | #ifndef _WIN32 |
|
|
1389 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1390 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1391 | ev_signal_start (EV_A_ &childev); |
|
|
1392 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1393 | #endif |
|
|
1394 | } |
|
|
1395 | else |
|
|
1396 | ev_default_loop_ptr = 0; |
|
|
1397 | } |
|
|
1398 | |
|
|
1399 | return ev_default_loop_ptr; |
|
|
1400 | } |
|
|
1401 | |
|
|
1402 | void |
|
|
1403 | ev_default_destroy (void) |
|
|
1404 | { |
|
|
1405 | #if EV_MULTIPLICITY |
|
|
1406 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1407 | #endif |
|
|
1408 | |
|
|
1409 | #ifndef _WIN32 |
|
|
1410 | ev_ref (EV_A); /* child watcher */ |
|
|
1411 | ev_signal_stop (EV_A_ &childev); |
|
|
1412 | #endif |
|
|
1413 | |
|
|
1414 | loop_destroy (EV_A); |
|
|
1415 | } |
|
|
1416 | |
|
|
1417 | void |
|
|
1418 | ev_default_fork (void) |
|
|
1419 | { |
|
|
1420 | #if EV_MULTIPLICITY |
|
|
1421 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1422 | #endif |
|
|
1423 | |
|
|
1424 | if (backend) |
|
|
1425 | postfork = 1; /* must be in line with ev_loop_fork */ |
|
|
1426 | } |
|
|
1427 | |
|
|
1428 | /*****************************************************************************/ |
|
|
1429 | |
|
|
1430 | void |
|
|
1431 | ev_invoke (EV_P_ void *w, int revents) |
|
|
1432 | { |
|
|
1433 | EV_CB_INVOKE ((W)w, revents); |
|
|
1434 | } |
|
|
1435 | |
|
|
1436 | void inline_speed |
|
|
1437 | call_pending (EV_P) |
|
|
1438 | { |
|
|
1439 | int pri; |
|
|
1440 | |
|
|
1441 | for (pri = NUMPRI; pri--; ) |
|
|
1442 | while (pendingcnt [pri]) |
|
|
1443 | { |
|
|
1444 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1445 | |
|
|
1446 | if (expect_true (p->w)) |
|
|
1447 | { |
|
|
1448 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1449 | |
|
|
1450 | p->w->pending = 0; |
|
|
1451 | EV_CB_INVOKE (p->w, p->events); |
|
|
1452 | } |
|
|
1453 | } |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | void inline_size |
255 | timer_reify (void) |
1457 | timers_reify (EV_P) |
256 | { |
1458 | { |
257 | while (timercnt && timers [0]->at <= ev_now) |
1459 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
258 | { |
1460 | { |
259 | struct ev_timer *w = timers [0]; |
1461 | ev_timer *w = (ev_timer *)timers [0]; |
260 | |
1462 | |
|
|
1463 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1464 | |
261 | /* first reschedule timer */ |
1465 | /* first reschedule or stop timer */ |
262 | if (w->repeat) |
1466 | if (w->repeat) |
263 | { |
1467 | { |
264 | if (w->is_abs) |
1468 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
265 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
1469 | |
266 | else |
|
|
267 | w->at = ev_now + w->repeat; |
1470 | ((WT)w)->at += w->repeat; |
|
|
1471 | if (((WT)w)->at < mn_now) |
|
|
1472 | ((WT)w)->at = mn_now; |
268 | |
1473 | |
269 | downheap (0); |
1474 | downheap (timers, timercnt, 0); |
270 | } |
1475 | } |
271 | else |
1476 | else |
272 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1477 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
273 | |
1478 | |
274 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1479 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1480 | } |
|
|
1481 | } |
|
|
1482 | |
|
|
1483 | #if EV_PERIODIC_ENABLE |
|
|
1484 | void inline_size |
|
|
1485 | periodics_reify (EV_P) |
|
|
1486 | { |
|
|
1487 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
275 | } |
1488 | { |
276 | } |
1489 | ev_periodic *w = (ev_periodic *)periodics [0]; |
277 | |
1490 | |
278 | int ev_loop_done; |
1491 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
279 | |
1492 | |
|
|
1493 | /* first reschedule or stop timer */ |
|
|
1494 | if (w->reschedule_cb) |
|
|
1495 | { |
|
|
1496 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
|
|
1497 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1498 | downheap (periodics, periodiccnt, 0); |
|
|
1499 | } |
|
|
1500 | else if (w->interval) |
|
|
1501 | { |
|
|
1502 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1503 | if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval; |
|
|
1504 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1505 | downheap (periodics, periodiccnt, 0); |
|
|
1506 | } |
|
|
1507 | else |
|
|
1508 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1509 | |
|
|
1510 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1511 | } |
|
|
1512 | } |
|
|
1513 | |
|
|
1514 | static void noinline |
|
|
1515 | periodics_reschedule (EV_P) |
|
|
1516 | { |
|
|
1517 | int i; |
|
|
1518 | |
|
|
1519 | /* adjust periodics after time jump */ |
|
|
1520 | for (i = 0; i < periodiccnt; ++i) |
|
|
1521 | { |
|
|
1522 | ev_periodic *w = (ev_periodic *)periodics [i]; |
|
|
1523 | |
|
|
1524 | if (w->reschedule_cb) |
|
|
1525 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1526 | else if (w->interval) |
|
|
1527 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1528 | } |
|
|
1529 | |
|
|
1530 | /* now rebuild the heap */ |
|
|
1531 | for (i = periodiccnt >> 1; i--; ) |
|
|
1532 | downheap (periodics, periodiccnt, i); |
|
|
1533 | } |
|
|
1534 | #endif |
|
|
1535 | |
|
|
1536 | #if EV_IDLE_ENABLE |
|
|
1537 | void inline_size |
|
|
1538 | idle_reify (EV_P) |
|
|
1539 | { |
|
|
1540 | if (expect_false (idleall)) |
|
|
1541 | { |
|
|
1542 | int pri; |
|
|
1543 | |
|
|
1544 | for (pri = NUMPRI; pri--; ) |
|
|
1545 | { |
|
|
1546 | if (pendingcnt [pri]) |
|
|
1547 | break; |
|
|
1548 | |
|
|
1549 | if (idlecnt [pri]) |
|
|
1550 | { |
|
|
1551 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
|
|
1552 | break; |
|
|
1553 | } |
|
|
1554 | } |
|
|
1555 | } |
|
|
1556 | } |
|
|
1557 | #endif |
|
|
1558 | |
|
|
1559 | void inline_speed |
|
|
1560 | time_update (EV_P_ ev_tstamp max_block) |
|
|
1561 | { |
|
|
1562 | int i; |
|
|
1563 | |
|
|
1564 | #if EV_USE_MONOTONIC |
|
|
1565 | if (expect_true (have_monotonic)) |
|
|
1566 | { |
|
|
1567 | ev_tstamp odiff = rtmn_diff; |
|
|
1568 | |
|
|
1569 | mn_now = get_clock (); |
|
|
1570 | |
|
|
1571 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1572 | /* interpolate in the meantime */ |
|
|
1573 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1574 | { |
|
|
1575 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1576 | return; |
|
|
1577 | } |
|
|
1578 | |
|
|
1579 | now_floor = mn_now; |
|
|
1580 | ev_rt_now = ev_time (); |
|
|
1581 | |
|
|
1582 | /* loop a few times, before making important decisions. |
|
|
1583 | * on the choice of "4": one iteration isn't enough, |
|
|
1584 | * in case we get preempted during the calls to |
|
|
1585 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1586 | * to succeed in that case, though. and looping a few more times |
|
|
1587 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1588 | * in the unlikely event of having been preempted here. |
|
|
1589 | */ |
|
|
1590 | for (i = 4; --i; ) |
|
|
1591 | { |
|
|
1592 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1593 | |
|
|
1594 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1595 | return; /* all is well */ |
|
|
1596 | |
|
|
1597 | ev_rt_now = ev_time (); |
|
|
1598 | mn_now = get_clock (); |
|
|
1599 | now_floor = mn_now; |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | # if EV_PERIODIC_ENABLE |
|
|
1603 | periodics_reschedule (EV_A); |
|
|
1604 | # endif |
|
|
1605 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1606 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1607 | } |
|
|
1608 | else |
|
|
1609 | #endif |
|
|
1610 | { |
|
|
1611 | ev_rt_now = ev_time (); |
|
|
1612 | |
|
|
1613 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
|
|
1614 | { |
|
|
1615 | #if EV_PERIODIC_ENABLE |
|
|
1616 | periodics_reschedule (EV_A); |
|
|
1617 | #endif |
|
|
1618 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1619 | for (i = 0; i < timercnt; ++i) |
|
|
1620 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1621 | } |
|
|
1622 | |
|
|
1623 | mn_now = ev_rt_now; |
|
|
1624 | } |
|
|
1625 | } |
|
|
1626 | |
|
|
1627 | void |
|
|
1628 | ev_ref (EV_P) |
|
|
1629 | { |
|
|
1630 | ++activecnt; |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | void |
|
|
1634 | ev_unref (EV_P) |
|
|
1635 | { |
|
|
1636 | --activecnt; |
|
|
1637 | } |
|
|
1638 | |
|
|
1639 | static int loop_done; |
|
|
1640 | |
|
|
1641 | void |
280 | int ev_loop (int flags) |
1642 | ev_loop (EV_P_ int flags) |
281 | { |
1643 | { |
282 | double block; |
1644 | loop_done = EVUNLOOP_CANCEL; |
283 | ev_loop_done = flags & EVLOOP_ONESHOT; |
1645 | |
|
|
1646 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
284 | |
1647 | |
285 | do |
1648 | do |
286 | { |
1649 | { |
|
|
1650 | #ifndef _WIN32 |
|
|
1651 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1652 | if (expect_false (getpid () != curpid)) |
|
|
1653 | { |
|
|
1654 | curpid = getpid (); |
|
|
1655 | postfork = 1; |
|
|
1656 | } |
|
|
1657 | #endif |
|
|
1658 | |
|
|
1659 | #if EV_FORK_ENABLE |
|
|
1660 | /* we might have forked, so queue fork handlers */ |
|
|
1661 | if (expect_false (postfork)) |
|
|
1662 | if (forkcnt) |
|
|
1663 | { |
|
|
1664 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1665 | call_pending (EV_A); |
|
|
1666 | } |
|
|
1667 | #endif |
|
|
1668 | |
|
|
1669 | /* queue prepare watchers (and execute them) */ |
|
|
1670 | if (expect_false (preparecnt)) |
|
|
1671 | { |
|
|
1672 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1673 | call_pending (EV_A); |
|
|
1674 | } |
|
|
1675 | |
|
|
1676 | if (expect_false (!activecnt)) |
|
|
1677 | break; |
|
|
1678 | |
|
|
1679 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1680 | if (expect_false (postfork)) |
|
|
1681 | loop_fork (EV_A); |
|
|
1682 | |
287 | /* update fd-related kernel structures */ |
1683 | /* update fd-related kernel structures */ |
288 | method_reify (); fdchangecnt = 0; |
1684 | fd_reify (EV_A); |
289 | |
1685 | |
290 | /* calculate blocking time */ |
1686 | /* calculate blocking time */ |
291 | ev_now = ev_time (); |
1687 | { |
|
|
1688 | ev_tstamp waittime = 0.; |
|
|
1689 | ev_tstamp sleeptime = 0.; |
292 | |
1690 | |
293 | if (flags & EVLOOP_NONBLOCK) |
1691 | if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
294 | block = 0.; |
|
|
295 | else if (!timercnt) |
|
|
296 | block = MAX_BLOCKTIME; |
|
|
297 | else |
|
|
298 | { |
1692 | { |
299 | block = timers [0]->at - ev_now + method_fudge; |
1693 | /* update time to cancel out callback processing overhead */ |
300 | if (block < 0.) block = 0.; |
1694 | time_update (EV_A_ 1e100); |
301 | else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME; |
1695 | |
|
|
1696 | waittime = MAX_BLOCKTIME; |
|
|
1697 | |
|
|
1698 | if (timercnt) |
|
|
1699 | { |
|
|
1700 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
|
|
1701 | if (waittime > to) waittime = to; |
|
|
1702 | } |
|
|
1703 | |
|
|
1704 | #if EV_PERIODIC_ENABLE |
|
|
1705 | if (periodiccnt) |
|
|
1706 | { |
|
|
1707 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
|
|
1708 | if (waittime > to) waittime = to; |
|
|
1709 | } |
|
|
1710 | #endif |
|
|
1711 | |
|
|
1712 | if (expect_false (waittime < timeout_blocktime)) |
|
|
1713 | waittime = timeout_blocktime; |
|
|
1714 | |
|
|
1715 | sleeptime = waittime - backend_fudge; |
|
|
1716 | |
|
|
1717 | if (expect_true (sleeptime > io_blocktime)) |
|
|
1718 | sleeptime = io_blocktime; |
|
|
1719 | |
|
|
1720 | if (sleeptime) |
|
|
1721 | { |
|
|
1722 | ev_sleep (sleeptime); |
|
|
1723 | waittime -= sleeptime; |
|
|
1724 | } |
302 | } |
1725 | } |
303 | |
1726 | |
304 | method_poll (block); |
1727 | ++loop_count; |
|
|
1728 | backend_poll (EV_A_ waittime); |
305 | |
1729 | |
|
|
1730 | /* update ev_rt_now, do magic */ |
|
|
1731 | time_update (EV_A_ waittime + sleeptime); |
|
|
1732 | } |
|
|
1733 | |
306 | /* put pending timers into pendign queue and reschedule them */ |
1734 | /* queue pending timers and reschedule them */ |
|
|
1735 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1736 | #if EV_PERIODIC_ENABLE |
|
|
1737 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1738 | #endif |
|
|
1739 | |
|
|
1740 | #if EV_IDLE_ENABLE |
|
|
1741 | /* queue idle watchers unless other events are pending */ |
307 | timer_reify (); |
1742 | idle_reify (EV_A); |
|
|
1743 | #endif |
308 | |
1744 | |
309 | ev_now = ev_time (); |
1745 | /* queue check watchers, to be executed first */ |
|
|
1746 | if (expect_false (checkcnt)) |
|
|
1747 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1748 | |
310 | call_pending (); |
1749 | call_pending (EV_A); |
311 | } |
1750 | } |
312 | while (!ev_loop_done); |
1751 | while (expect_true ( |
313 | } |
1752 | activecnt |
|
|
1753 | && !loop_done |
|
|
1754 | && !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
|
|
1755 | )); |
314 | |
1756 | |
315 | static void |
1757 | if (loop_done == EVUNLOOP_ONE) |
316 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1758 | loop_done = EVUNLOOP_CANCEL; |
|
|
1759 | } |
|
|
1760 | |
|
|
1761 | void |
|
|
1762 | ev_unloop (EV_P_ int how) |
|
|
1763 | { |
|
|
1764 | loop_done = how; |
|
|
1765 | } |
|
|
1766 | |
|
|
1767 | /*****************************************************************************/ |
|
|
1768 | |
|
|
1769 | void inline_size |
|
|
1770 | wlist_add (WL *head, WL elem) |
317 | { |
1771 | { |
318 | elem->next = *head; |
1772 | elem->next = *head; |
319 | *head = elem; |
1773 | *head = elem; |
320 | } |
1774 | } |
321 | |
1775 | |
322 | static void |
1776 | void inline_size |
323 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1777 | wlist_del (WL *head, WL elem) |
324 | { |
1778 | { |
325 | while (*head) |
1779 | while (*head) |
326 | { |
1780 | { |
327 | if (*head == elem) |
1781 | if (*head == elem) |
328 | { |
1782 | { |
… | |
… | |
332 | |
1786 | |
333 | head = &(*head)->next; |
1787 | head = &(*head)->next; |
334 | } |
1788 | } |
335 | } |
1789 | } |
336 | |
1790 | |
|
|
1791 | void inline_speed |
|
|
1792 | clear_pending (EV_P_ W w) |
|
|
1793 | { |
|
|
1794 | if (w->pending) |
|
|
1795 | { |
|
|
1796 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1797 | w->pending = 0; |
|
|
1798 | } |
|
|
1799 | } |
|
|
1800 | |
|
|
1801 | int |
|
|
1802 | ev_clear_pending (EV_P_ void *w) |
|
|
1803 | { |
|
|
1804 | W w_ = (W)w; |
|
|
1805 | int pending = w_->pending; |
|
|
1806 | |
|
|
1807 | if (expect_true (pending)) |
|
|
1808 | { |
|
|
1809 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1810 | w_->pending = 0; |
|
|
1811 | p->w = 0; |
|
|
1812 | return p->events; |
|
|
1813 | } |
|
|
1814 | else |
|
|
1815 | return 0; |
|
|
1816 | } |
|
|
1817 | |
|
|
1818 | void inline_size |
|
|
1819 | pri_adjust (EV_P_ W w) |
|
|
1820 | { |
|
|
1821 | int pri = w->priority; |
|
|
1822 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1823 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1824 | w->priority = pri; |
|
|
1825 | } |
|
|
1826 | |
|
|
1827 | void inline_speed |
|
|
1828 | ev_start (EV_P_ W w, int active) |
|
|
1829 | { |
|
|
1830 | pri_adjust (EV_A_ w); |
|
|
1831 | w->active = active; |
|
|
1832 | ev_ref (EV_A); |
|
|
1833 | } |
|
|
1834 | |
|
|
1835 | void inline_size |
|
|
1836 | ev_stop (EV_P_ W w) |
|
|
1837 | { |
|
|
1838 | ev_unref (EV_A); |
|
|
1839 | w->active = 0; |
|
|
1840 | } |
|
|
1841 | |
|
|
1842 | /*****************************************************************************/ |
|
|
1843 | |
|
|
1844 | void noinline |
|
|
1845 | ev_io_start (EV_P_ ev_io *w) |
|
|
1846 | { |
|
|
1847 | int fd = w->fd; |
|
|
1848 | |
|
|
1849 | if (expect_false (ev_is_active (w))) |
|
|
1850 | return; |
|
|
1851 | |
|
|
1852 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1853 | |
|
|
1854 | ev_start (EV_A_ (W)w, 1); |
|
|
1855 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1856 | wlist_add (&anfds[fd].head, (WL)w); |
|
|
1857 | |
|
|
1858 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1859 | w->events &= ~EV_IOFDSET; |
|
|
1860 | } |
|
|
1861 | |
|
|
1862 | void noinline |
|
|
1863 | ev_io_stop (EV_P_ ev_io *w) |
|
|
1864 | { |
|
|
1865 | clear_pending (EV_A_ (W)w); |
|
|
1866 | if (expect_false (!ev_is_active (w))) |
|
|
1867 | return; |
|
|
1868 | |
|
|
1869 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1870 | |
|
|
1871 | wlist_del (&anfds[w->fd].head, (WL)w); |
|
|
1872 | ev_stop (EV_A_ (W)w); |
|
|
1873 | |
|
|
1874 | fd_change (EV_A_ w->fd, 1); |
|
|
1875 | } |
|
|
1876 | |
|
|
1877 | void noinline |
|
|
1878 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
1879 | { |
|
|
1880 | if (expect_false (ev_is_active (w))) |
|
|
1881 | return; |
|
|
1882 | |
|
|
1883 | ((WT)w)->at += mn_now; |
|
|
1884 | |
|
|
1885 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1886 | |
|
|
1887 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1888 | array_needsize (WT, timers, timermax, timercnt, EMPTY2); |
|
|
1889 | timers [timercnt - 1] = (WT)w; |
|
|
1890 | upheap (timers, timercnt - 1); |
|
|
1891 | |
|
|
1892 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | void noinline |
|
|
1896 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
1897 | { |
|
|
1898 | clear_pending (EV_A_ (W)w); |
|
|
1899 | if (expect_false (!ev_is_active (w))) |
|
|
1900 | return; |
|
|
1901 | |
|
|
1902 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); |
|
|
1903 | |
|
|
1904 | { |
|
|
1905 | int active = ((W)w)->active; |
|
|
1906 | |
|
|
1907 | if (expect_true (--active < --timercnt)) |
|
|
1908 | { |
|
|
1909 | timers [active] = timers [timercnt]; |
|
|
1910 | adjustheap (timers, timercnt, active); |
|
|
1911 | } |
|
|
1912 | } |
|
|
1913 | |
|
|
1914 | ((WT)w)->at -= mn_now; |
|
|
1915 | |
|
|
1916 | ev_stop (EV_A_ (W)w); |
|
|
1917 | } |
|
|
1918 | |
|
|
1919 | void noinline |
|
|
1920 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
1921 | { |
|
|
1922 | if (ev_is_active (w)) |
|
|
1923 | { |
|
|
1924 | if (w->repeat) |
|
|
1925 | { |
|
|
1926 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1927 | adjustheap (timers, timercnt, ((W)w)->active - 1); |
|
|
1928 | } |
|
|
1929 | else |
|
|
1930 | ev_timer_stop (EV_A_ w); |
|
|
1931 | } |
|
|
1932 | else if (w->repeat) |
|
|
1933 | { |
|
|
1934 | w->at = w->repeat; |
|
|
1935 | ev_timer_start (EV_A_ w); |
|
|
1936 | } |
|
|
1937 | } |
|
|
1938 | |
|
|
1939 | #if EV_PERIODIC_ENABLE |
|
|
1940 | void noinline |
|
|
1941 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
1942 | { |
|
|
1943 | if (expect_false (ev_is_active (w))) |
|
|
1944 | return; |
|
|
1945 | |
|
|
1946 | if (w->reschedule_cb) |
|
|
1947 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1948 | else if (w->interval) |
|
|
1949 | { |
|
|
1950 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1951 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1952 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1953 | } |
|
|
1954 | else |
|
|
1955 | ((WT)w)->at = w->offset; |
|
|
1956 | |
|
|
1957 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1958 | array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); |
|
|
1959 | periodics [periodiccnt - 1] = (WT)w; |
|
|
1960 | upheap (periodics, periodiccnt - 1); |
|
|
1961 | |
|
|
1962 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
|
|
1963 | } |
|
|
1964 | |
|
|
1965 | void noinline |
|
|
1966 | ev_periodic_stop (EV_P_ ev_periodic *w) |
|
|
1967 | { |
|
|
1968 | clear_pending (EV_A_ (W)w); |
|
|
1969 | if (expect_false (!ev_is_active (w))) |
|
|
1970 | return; |
|
|
1971 | |
|
|
1972 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); |
|
|
1973 | |
|
|
1974 | { |
|
|
1975 | int active = ((W)w)->active; |
|
|
1976 | |
|
|
1977 | if (expect_true (--active < --periodiccnt)) |
|
|
1978 | { |
|
|
1979 | periodics [active] = periodics [periodiccnt]; |
|
|
1980 | adjustheap (periodics, periodiccnt, active); |
|
|
1981 | } |
|
|
1982 | } |
|
|
1983 | |
|
|
1984 | ev_stop (EV_A_ (W)w); |
|
|
1985 | } |
|
|
1986 | |
|
|
1987 | void noinline |
|
|
1988 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1989 | { |
|
|
1990 | /* TODO: use adjustheap and recalculation */ |
|
|
1991 | ev_periodic_stop (EV_A_ w); |
|
|
1992 | ev_periodic_start (EV_A_ w); |
|
|
1993 | } |
|
|
1994 | #endif |
|
|
1995 | |
|
|
1996 | #ifndef SA_RESTART |
|
|
1997 | # define SA_RESTART 0 |
|
|
1998 | #endif |
|
|
1999 | |
|
|
2000 | void noinline |
|
|
2001 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
2002 | { |
|
|
2003 | #if EV_MULTIPLICITY |
|
|
2004 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2005 | #endif |
|
|
2006 | if (expect_false (ev_is_active (w))) |
|
|
2007 | return; |
|
|
2008 | |
|
|
2009 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
2010 | |
|
|
2011 | evpipe_init (EV_A); |
|
|
2012 | |
|
|
2013 | { |
|
|
2014 | #ifndef _WIN32 |
|
|
2015 | sigset_t full, prev; |
|
|
2016 | sigfillset (&full); |
|
|
2017 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
2018 | #endif |
|
|
2019 | |
|
|
2020 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
2021 | |
|
|
2022 | #ifndef _WIN32 |
|
|
2023 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
2024 | #endif |
|
|
2025 | } |
|
|
2026 | |
|
|
2027 | ev_start (EV_A_ (W)w, 1); |
|
|
2028 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
|
|
2029 | |
|
|
2030 | if (!((WL)w)->next) |
|
|
2031 | { |
|
|
2032 | #if _WIN32 |
|
|
2033 | signal (w->signum, ev_sighandler); |
|
|
2034 | #else |
|
|
2035 | struct sigaction sa; |
|
|
2036 | sa.sa_handler = ev_sighandler; |
|
|
2037 | sigfillset (&sa.sa_mask); |
|
|
2038 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
2039 | sigaction (w->signum, &sa, 0); |
|
|
2040 | #endif |
|
|
2041 | } |
|
|
2042 | } |
|
|
2043 | |
|
|
2044 | void noinline |
|
|
2045 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
2046 | { |
|
|
2047 | clear_pending (EV_A_ (W)w); |
|
|
2048 | if (expect_false (!ev_is_active (w))) |
|
|
2049 | return; |
|
|
2050 | |
|
|
2051 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
|
|
2052 | ev_stop (EV_A_ (W)w); |
|
|
2053 | |
|
|
2054 | if (!signals [w->signum - 1].head) |
|
|
2055 | signal (w->signum, SIG_DFL); |
|
|
2056 | } |
|
|
2057 | |
|
|
2058 | void |
|
|
2059 | ev_child_start (EV_P_ ev_child *w) |
|
|
2060 | { |
|
|
2061 | #if EV_MULTIPLICITY |
|
|
2062 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
2063 | #endif |
|
|
2064 | if (expect_false (ev_is_active (w))) |
|
|
2065 | return; |
|
|
2066 | |
|
|
2067 | ev_start (EV_A_ (W)w, 1); |
|
|
2068 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2069 | } |
|
|
2070 | |
|
|
2071 | void |
|
|
2072 | ev_child_stop (EV_P_ ev_child *w) |
|
|
2073 | { |
|
|
2074 | clear_pending (EV_A_ (W)w); |
|
|
2075 | if (expect_false (!ev_is_active (w))) |
|
|
2076 | return; |
|
|
2077 | |
|
|
2078 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
2079 | ev_stop (EV_A_ (W)w); |
|
|
2080 | } |
|
|
2081 | |
|
|
2082 | #if EV_STAT_ENABLE |
|
|
2083 | |
|
|
2084 | # ifdef _WIN32 |
|
|
2085 | # undef lstat |
|
|
2086 | # define lstat(a,b) _stati64 (a,b) |
|
|
2087 | # endif |
|
|
2088 | |
|
|
2089 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
2090 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
2091 | |
|
|
2092 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
2093 | |
|
|
2094 | #if EV_USE_INOTIFY |
|
|
2095 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
2096 | |
|
|
2097 | static void noinline |
|
|
2098 | infy_add (EV_P_ ev_stat *w) |
|
|
2099 | { |
|
|
2100 | 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); |
|
|
2101 | |
|
|
2102 | if (w->wd < 0) |
|
|
2103 | { |
|
|
2104 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
2105 | |
|
|
2106 | /* monitor some parent directory for speedup hints */ |
|
|
2107 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
2108 | { |
|
|
2109 | char path [4096]; |
|
|
2110 | strcpy (path, w->path); |
|
|
2111 | |
|
|
2112 | do |
|
|
2113 | { |
|
|
2114 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
2115 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
2116 | |
|
|
2117 | char *pend = strrchr (path, '/'); |
|
|
2118 | |
|
|
2119 | if (!pend) |
|
|
2120 | break; /* whoops, no '/', complain to your admin */ |
|
|
2121 | |
|
|
2122 | *pend = 0; |
|
|
2123 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
2124 | } |
|
|
2125 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
2126 | } |
|
|
2127 | } |
|
|
2128 | else |
|
|
2129 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
2130 | |
|
|
2131 | if (w->wd >= 0) |
|
|
2132 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
2133 | } |
|
|
2134 | |
|
|
2135 | static void noinline |
|
|
2136 | infy_del (EV_P_ ev_stat *w) |
|
|
2137 | { |
|
|
2138 | int slot; |
|
|
2139 | int wd = w->wd; |
|
|
2140 | |
|
|
2141 | if (wd < 0) |
|
|
2142 | return; |
|
|
2143 | |
|
|
2144 | w->wd = -2; |
|
|
2145 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
2146 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
2147 | |
|
|
2148 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
2149 | inotify_rm_watch (fs_fd, wd); |
|
|
2150 | } |
|
|
2151 | |
|
|
2152 | static void noinline |
|
|
2153 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
2154 | { |
|
|
2155 | if (slot < 0) |
|
|
2156 | /* overflow, need to check for all hahs slots */ |
|
|
2157 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2158 | infy_wd (EV_A_ slot, wd, ev); |
|
|
2159 | else |
|
|
2160 | { |
|
|
2161 | WL w_; |
|
|
2162 | |
|
|
2163 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
2164 | { |
|
|
2165 | ev_stat *w = (ev_stat *)w_; |
|
|
2166 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
2167 | |
|
|
2168 | if (w->wd == wd || wd == -1) |
|
|
2169 | { |
|
|
2170 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
2171 | { |
|
|
2172 | w->wd = -1; |
|
|
2173 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2174 | } |
|
|
2175 | |
|
|
2176 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
2177 | } |
|
|
2178 | } |
|
|
2179 | } |
|
|
2180 | } |
|
|
2181 | |
337 | static void |
2182 | static void |
338 | ev_start (struct ev_watcher *w, int active) |
2183 | infy_cb (EV_P_ ev_io *w, int revents) |
339 | { |
2184 | { |
340 | w->pending = 0; |
2185 | char buf [EV_INOTIFY_BUFSIZE]; |
341 | w->active = active; |
2186 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
2187 | int ofs; |
|
|
2188 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
2189 | |
|
|
2190 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
2191 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
2192 | } |
|
|
2193 | |
|
|
2194 | void inline_size |
|
|
2195 | infy_init (EV_P) |
|
|
2196 | { |
|
|
2197 | if (fs_fd != -2) |
|
|
2198 | return; |
|
|
2199 | |
|
|
2200 | fs_fd = inotify_init (); |
|
|
2201 | |
|
|
2202 | if (fs_fd >= 0) |
|
|
2203 | { |
|
|
2204 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
2205 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
2206 | ev_io_start (EV_A_ &fs_w); |
|
|
2207 | } |
|
|
2208 | } |
|
|
2209 | |
|
|
2210 | void inline_size |
|
|
2211 | infy_fork (EV_P) |
|
|
2212 | { |
|
|
2213 | int slot; |
|
|
2214 | |
|
|
2215 | if (fs_fd < 0) |
|
|
2216 | return; |
|
|
2217 | |
|
|
2218 | close (fs_fd); |
|
|
2219 | fs_fd = inotify_init (); |
|
|
2220 | |
|
|
2221 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
2222 | { |
|
|
2223 | WL w_ = fs_hash [slot].head; |
|
|
2224 | fs_hash [slot].head = 0; |
|
|
2225 | |
|
|
2226 | while (w_) |
|
|
2227 | { |
|
|
2228 | ev_stat *w = (ev_stat *)w_; |
|
|
2229 | w_ = w_->next; /* lets us add this watcher */ |
|
|
2230 | |
|
|
2231 | w->wd = -1; |
|
|
2232 | |
|
|
2233 | if (fs_fd >= 0) |
|
|
2234 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
2235 | else |
|
|
2236 | ev_timer_start (EV_A_ &w->timer); |
|
|
2237 | } |
|
|
2238 | |
|
|
2239 | } |
|
|
2240 | } |
|
|
2241 | |
|
|
2242 | #endif |
|
|
2243 | |
|
|
2244 | void |
|
|
2245 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2246 | { |
|
|
2247 | if (lstat (w->path, &w->attr) < 0) |
|
|
2248 | w->attr.st_nlink = 0; |
|
|
2249 | else if (!w->attr.st_nlink) |
|
|
2250 | w->attr.st_nlink = 1; |
|
|
2251 | } |
|
|
2252 | |
|
|
2253 | static void noinline |
|
|
2254 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2255 | { |
|
|
2256 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2257 | |
|
|
2258 | /* we copy this here each the time so that */ |
|
|
2259 | /* prev has the old value when the callback gets invoked */ |
|
|
2260 | w->prev = w->attr; |
|
|
2261 | ev_stat_stat (EV_A_ w); |
|
|
2262 | |
|
|
2263 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2264 | if ( |
|
|
2265 | w->prev.st_dev != w->attr.st_dev |
|
|
2266 | || w->prev.st_ino != w->attr.st_ino |
|
|
2267 | || w->prev.st_mode != w->attr.st_mode |
|
|
2268 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2269 | || w->prev.st_uid != w->attr.st_uid |
|
|
2270 | || w->prev.st_gid != w->attr.st_gid |
|
|
2271 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2272 | || w->prev.st_size != w->attr.st_size |
|
|
2273 | || w->prev.st_atime != w->attr.st_atime |
|
|
2274 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2275 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2276 | ) { |
|
|
2277 | #if EV_USE_INOTIFY |
|
|
2278 | infy_del (EV_A_ w); |
|
|
2279 | infy_add (EV_A_ w); |
|
|
2280 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2281 | #endif |
|
|
2282 | |
|
|
2283 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2284 | } |
|
|
2285 | } |
|
|
2286 | |
|
|
2287 | void |
|
|
2288 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2289 | { |
|
|
2290 | if (expect_false (ev_is_active (w))) |
|
|
2291 | return; |
|
|
2292 | |
|
|
2293 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2294 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2295 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2296 | |
|
|
2297 | ev_stat_stat (EV_A_ w); |
|
|
2298 | |
|
|
2299 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2300 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2301 | |
|
|
2302 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2303 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2304 | |
|
|
2305 | #if EV_USE_INOTIFY |
|
|
2306 | infy_init (EV_A); |
|
|
2307 | |
|
|
2308 | if (fs_fd >= 0) |
|
|
2309 | infy_add (EV_A_ w); |
|
|
2310 | else |
|
|
2311 | #endif |
|
|
2312 | ev_timer_start (EV_A_ &w->timer); |
|
|
2313 | |
|
|
2314 | ev_start (EV_A_ (W)w, 1); |
|
|
2315 | } |
|
|
2316 | |
|
|
2317 | void |
|
|
2318 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2319 | { |
|
|
2320 | clear_pending (EV_A_ (W)w); |
|
|
2321 | if (expect_false (!ev_is_active (w))) |
|
|
2322 | return; |
|
|
2323 | |
|
|
2324 | #if EV_USE_INOTIFY |
|
|
2325 | infy_del (EV_A_ w); |
|
|
2326 | #endif |
|
|
2327 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2328 | |
|
|
2329 | ev_stop (EV_A_ (W)w); |
|
|
2330 | } |
|
|
2331 | #endif |
|
|
2332 | |
|
|
2333 | #if EV_IDLE_ENABLE |
|
|
2334 | void |
|
|
2335 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2336 | { |
|
|
2337 | if (expect_false (ev_is_active (w))) |
|
|
2338 | return; |
|
|
2339 | |
|
|
2340 | pri_adjust (EV_A_ (W)w); |
|
|
2341 | |
|
|
2342 | { |
|
|
2343 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2344 | |
|
|
2345 | ++idleall; |
|
|
2346 | ev_start (EV_A_ (W)w, active); |
|
|
2347 | |
|
|
2348 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2349 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2350 | } |
|
|
2351 | } |
|
|
2352 | |
|
|
2353 | void |
|
|
2354 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2355 | { |
|
|
2356 | clear_pending (EV_A_ (W)w); |
|
|
2357 | if (expect_false (!ev_is_active (w))) |
|
|
2358 | return; |
|
|
2359 | |
|
|
2360 | { |
|
|
2361 | int active = ((W)w)->active; |
|
|
2362 | |
|
|
2363 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2364 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
|
|
2365 | |
|
|
2366 | ev_stop (EV_A_ (W)w); |
|
|
2367 | --idleall; |
|
|
2368 | } |
|
|
2369 | } |
|
|
2370 | #endif |
|
|
2371 | |
|
|
2372 | void |
|
|
2373 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2374 | { |
|
|
2375 | if (expect_false (ev_is_active (w))) |
|
|
2376 | return; |
|
|
2377 | |
|
|
2378 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2379 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2380 | prepares [preparecnt - 1] = w; |
|
|
2381 | } |
|
|
2382 | |
|
|
2383 | void |
|
|
2384 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2385 | { |
|
|
2386 | clear_pending (EV_A_ (W)w); |
|
|
2387 | if (expect_false (!ev_is_active (w))) |
|
|
2388 | return; |
|
|
2389 | |
|
|
2390 | { |
|
|
2391 | int active = ((W)w)->active; |
|
|
2392 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2393 | ((W)prepares [active - 1])->active = active; |
|
|
2394 | } |
|
|
2395 | |
|
|
2396 | ev_stop (EV_A_ (W)w); |
|
|
2397 | } |
|
|
2398 | |
|
|
2399 | void |
|
|
2400 | ev_check_start (EV_P_ ev_check *w) |
|
|
2401 | { |
|
|
2402 | if (expect_false (ev_is_active (w))) |
|
|
2403 | return; |
|
|
2404 | |
|
|
2405 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
2406 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
2407 | checks [checkcnt - 1] = w; |
|
|
2408 | } |
|
|
2409 | |
|
|
2410 | void |
|
|
2411 | ev_check_stop (EV_P_ ev_check *w) |
|
|
2412 | { |
|
|
2413 | clear_pending (EV_A_ (W)w); |
|
|
2414 | if (expect_false (!ev_is_active (w))) |
|
|
2415 | return; |
|
|
2416 | |
|
|
2417 | { |
|
|
2418 | int active = ((W)w)->active; |
|
|
2419 | checks [active - 1] = checks [--checkcnt]; |
|
|
2420 | ((W)checks [active - 1])->active = active; |
|
|
2421 | } |
|
|
2422 | |
|
|
2423 | ev_stop (EV_A_ (W)w); |
|
|
2424 | } |
|
|
2425 | |
|
|
2426 | #if EV_EMBED_ENABLE |
|
|
2427 | void noinline |
|
|
2428 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2429 | { |
|
|
2430 | ev_loop (w->other, EVLOOP_NONBLOCK); |
342 | } |
2431 | } |
343 | |
2432 | |
344 | static void |
2433 | static void |
345 | ev_stop (struct ev_watcher *w) |
2434 | embed_io_cb (EV_P_ ev_io *io, int revents) |
346 | { |
2435 | { |
347 | if (w->pending) |
2436 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
348 | pendings [w->pending - 1].w = 0; |
|
|
349 | |
2437 | |
350 | w->active = 0; |
|
|
351 | /* nop */ |
|
|
352 | } |
|
|
353 | |
|
|
354 | void |
|
|
355 | evio_start (struct ev_io *w) |
|
|
356 | { |
|
|
357 | if (ev_is_active (w)) |
2438 | if (ev_cb (w)) |
358 | return; |
2439 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
359 | |
|
|
360 | int fd = w->fd; |
|
|
361 | |
|
|
362 | ev_start ((struct ev_watcher *)w, 1); |
|
|
363 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
364 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
|
|
365 | |
|
|
366 | ++fdchangecnt; |
|
|
367 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
368 | fdchanges [fdchangecnt - 1] = fd; |
|
|
369 | } |
|
|
370 | |
|
|
371 | void |
|
|
372 | evio_stop (struct ev_io *w) |
|
|
373 | { |
|
|
374 | if (!ev_is_active (w)) |
|
|
375 | return; |
|
|
376 | |
|
|
377 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
|
|
378 | ev_stop ((struct ev_watcher *)w); |
|
|
379 | |
|
|
380 | ++fdchangecnt; |
|
|
381 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
382 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
383 | } |
|
|
384 | |
|
|
385 | void |
|
|
386 | evtimer_start (struct ev_timer *w) |
|
|
387 | { |
|
|
388 | if (ev_is_active (w)) |
|
|
389 | return; |
|
|
390 | |
|
|
391 | if (w->is_abs) |
|
|
392 | { |
|
|
393 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
|
|
394 | if (w->repeat) |
|
|
395 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
396 | } |
|
|
397 | else |
2440 | else |
398 | w->at += ev_now; |
2441 | ev_loop (w->other, EVLOOP_NONBLOCK); |
399 | |
|
|
400 | ev_start ((struct ev_watcher *)w, ++timercnt); |
|
|
401 | array_needsize (timers, timermax, timercnt, ); |
|
|
402 | timers [timercnt - 1] = w; |
|
|
403 | upheap (timercnt - 1); |
|
|
404 | } |
2442 | } |
405 | |
2443 | |
406 | void |
2444 | static void |
407 | evtimer_stop (struct ev_timer *w) |
2445 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
408 | { |
2446 | { |
409 | if (!ev_is_active (w)) |
2447 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
410 | return; |
|
|
411 | |
2448 | |
412 | if (w->active < timercnt--) |
2449 | { |
|
|
2450 | struct ev_loop *loop = w->other; |
|
|
2451 | |
|
|
2452 | while (fdchangecnt) |
413 | { |
2453 | { |
414 | timers [w->active - 1] = timers [timercnt]; |
2454 | fd_reify (EV_A); |
415 | downheap (w->active - 1); |
2455 | ev_loop (EV_A_ EVLOOP_NONBLOCK); |
416 | } |
2456 | } |
417 | |
2457 | } |
418 | ev_stop ((struct ev_watcher *)w); |
|
|
419 | } |
2458 | } |
420 | |
2459 | |
421 | void |
2460 | #if 0 |
422 | evsignal_start (struct ev_signal *w) |
2461 | static void |
|
|
2462 | embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
423 | { |
2463 | { |
|
|
2464 | ev_idle_stop (EV_A_ idle); |
|
|
2465 | } |
|
|
2466 | #endif |
|
|
2467 | |
|
|
2468 | void |
|
|
2469 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2470 | { |
424 | if (ev_is_active (w)) |
2471 | if (expect_false (ev_is_active (w))) |
425 | return; |
2472 | return; |
426 | |
2473 | |
427 | ev_start ((struct ev_watcher *)w, 1); |
2474 | { |
428 | array_needsize (signals, signalmax, w->signum, signals_init); |
2475 | struct ev_loop *loop = w->other; |
429 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
2476 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
430 | } |
2477 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
|
|
2478 | } |
431 | |
2479 | |
|
|
2480 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2481 | ev_io_start (EV_A_ &w->io); |
|
|
2482 | |
|
|
2483 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2484 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2485 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2486 | |
|
|
2487 | /*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
|
|
2488 | |
|
|
2489 | ev_start (EV_A_ (W)w, 1); |
|
|
2490 | } |
|
|
2491 | |
432 | void |
2492 | void |
433 | evsignal_stop (struct ev_signal *w) |
2493 | ev_embed_stop (EV_P_ ev_embed *w) |
434 | { |
2494 | { |
|
|
2495 | clear_pending (EV_A_ (W)w); |
435 | if (!ev_is_active (w)) |
2496 | if (expect_false (!ev_is_active (w))) |
436 | return; |
2497 | return; |
437 | |
2498 | |
438 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
2499 | ev_io_stop (EV_A_ &w->io); |
439 | ev_stop ((struct ev_watcher *)w); |
2500 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2501 | |
|
|
2502 | ev_stop (EV_A_ (W)w); |
440 | } |
2503 | } |
|
|
2504 | #endif |
|
|
2505 | |
|
|
2506 | #if EV_FORK_ENABLE |
|
|
2507 | void |
|
|
2508 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2509 | { |
|
|
2510 | if (expect_false (ev_is_active (w))) |
|
|
2511 | return; |
|
|
2512 | |
|
|
2513 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2514 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2515 | forks [forkcnt - 1] = w; |
|
|
2516 | } |
|
|
2517 | |
|
|
2518 | void |
|
|
2519 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2520 | { |
|
|
2521 | clear_pending (EV_A_ (W)w); |
|
|
2522 | if (expect_false (!ev_is_active (w))) |
|
|
2523 | return; |
|
|
2524 | |
|
|
2525 | { |
|
|
2526 | int active = ((W)w)->active; |
|
|
2527 | forks [active - 1] = forks [--forkcnt]; |
|
|
2528 | ((W)forks [active - 1])->active = active; |
|
|
2529 | } |
|
|
2530 | |
|
|
2531 | ev_stop (EV_A_ (W)w); |
|
|
2532 | } |
|
|
2533 | #endif |
|
|
2534 | |
|
|
2535 | #if EV_ASYNC_ENABLE |
|
|
2536 | void |
|
|
2537 | ev_async_start (EV_P_ ev_async *w) |
|
|
2538 | { |
|
|
2539 | if (expect_false (ev_is_active (w))) |
|
|
2540 | return; |
|
|
2541 | |
|
|
2542 | evpipe_init (EV_A); |
|
|
2543 | |
|
|
2544 | ev_start (EV_A_ (W)w, ++asynccnt); |
|
|
2545 | array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
|
|
2546 | asyncs [asynccnt - 1] = w; |
|
|
2547 | } |
|
|
2548 | |
|
|
2549 | void |
|
|
2550 | ev_async_stop (EV_P_ ev_async *w) |
|
|
2551 | { |
|
|
2552 | clear_pending (EV_A_ (W)w); |
|
|
2553 | if (expect_false (!ev_is_active (w))) |
|
|
2554 | return; |
|
|
2555 | |
|
|
2556 | { |
|
|
2557 | int active = ((W)w)->active; |
|
|
2558 | asyncs [active - 1] = asyncs [--asynccnt]; |
|
|
2559 | ((W)asyncs [active - 1])->active = active; |
|
|
2560 | } |
|
|
2561 | |
|
|
2562 | ev_stop (EV_A_ (W)w); |
|
|
2563 | } |
|
|
2564 | |
|
|
2565 | void |
|
|
2566 | ev_async_send (EV_P_ ev_async *w) |
|
|
2567 | { |
|
|
2568 | w->sent = 1; |
|
|
2569 | evpipe_write (EV_A_ &gotasync); |
|
|
2570 | } |
|
|
2571 | #endif |
441 | |
2572 | |
442 | /*****************************************************************************/ |
2573 | /*****************************************************************************/ |
443 | #if 1 |
2574 | |
|
|
2575 | struct ev_once |
|
|
2576 | { |
|
|
2577 | ev_io io; |
|
|
2578 | ev_timer to; |
|
|
2579 | void (*cb)(int revents, void *arg); |
|
|
2580 | void *arg; |
|
|
2581 | }; |
444 | |
2582 | |
445 | static void |
2583 | static void |
446 | sin_cb (struct ev_io *w, int revents) |
2584 | once_cb (EV_P_ struct ev_once *once, int revents) |
447 | { |
2585 | { |
448 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
2586 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
2587 | void *arg = once->arg; |
|
|
2588 | |
|
|
2589 | ev_io_stop (EV_A_ &once->io); |
|
|
2590 | ev_timer_stop (EV_A_ &once->to); |
|
|
2591 | ev_free (once); |
|
|
2592 | |
|
|
2593 | cb (revents, arg); |
449 | } |
2594 | } |
450 | |
2595 | |
451 | static void |
2596 | static void |
|
|
2597 | once_cb_io (EV_P_ ev_io *w, int revents) |
|
|
2598 | { |
|
|
2599 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
2600 | } |
|
|
2601 | |
|
|
2602 | static void |
452 | ocb (struct ev_timer *w, int revents) |
2603 | once_cb_to (EV_P_ ev_timer *w, int revents) |
453 | { |
2604 | { |
454 | fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
2605 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
455 | } |
2606 | } |
456 | |
2607 | |
457 | int main (void) |
2608 | void |
|
|
2609 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
458 | { |
2610 | { |
459 | struct ev_io sin; |
2611 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
460 | |
2612 | |
461 | ev_init (0); |
2613 | if (expect_false (!once)) |
462 | |
|
|
463 | evw_init (&sin, sin_cb, 55); |
|
|
464 | evio_set (&sin, 0, EV_READ); |
|
|
465 | evio_start (&sin); |
|
|
466 | |
|
|
467 | struct ev_timer t[1000]; |
|
|
468 | |
|
|
469 | int i; |
|
|
470 | for (i = 0; i < 1000; ++i) |
|
|
471 | { |
|
|
472 | struct ev_timer *w = t + i; |
|
|
473 | evw_init (w, ocb, i); |
|
|
474 | evtimer_set_rel (w, drand48 (), 0); |
|
|
475 | evtimer_start (w); |
|
|
476 | if (drand48 () < 0.5) |
|
|
477 | evtimer_stop (w); |
|
|
478 | } |
2614 | { |
479 | |
2615 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
480 | ev_loop (0); |
|
|
481 | |
|
|
482 | return 0; |
2616 | return; |
483 | } |
2617 | } |
484 | |
2618 | |
485 | #endif |
2619 | once->cb = cb; |
|
|
2620 | once->arg = arg; |
486 | |
2621 | |
|
|
2622 | ev_init (&once->io, once_cb_io); |
|
|
2623 | if (fd >= 0) |
|
|
2624 | { |
|
|
2625 | ev_io_set (&once->io, fd, events); |
|
|
2626 | ev_io_start (EV_A_ &once->io); |
|
|
2627 | } |
487 | |
2628 | |
|
|
2629 | ev_init (&once->to, once_cb_to); |
|
|
2630 | if (timeout >= 0.) |
|
|
2631 | { |
|
|
2632 | ev_timer_set (&once->to, timeout, 0.); |
|
|
2633 | ev_timer_start (EV_A_ &once->to); |
|
|
2634 | } |
|
|
2635 | } |
488 | |
2636 | |
|
|
2637 | #if EV_MULTIPLICITY |
|
|
2638 | #include "ev_wrap.h" |
|
|
2639 | #endif |
489 | |
2640 | |
|
|
2641 | #ifdef __cplusplus |
|
|
2642 | } |
|
|
2643 | #endif |
|
|
2644 | |