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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 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 |
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8 | * modification, are permitted provided that the following conditions are |
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9 | * met: |
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10 | * |
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11 | * * Redistributions of source code must retain the above copyright |
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12 | * notice, this list of conditions and the following disclaimer. |
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13 | * |
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14 | * * Redistributions in binary form must reproduce the above |
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15 | * copyright notice, this list of conditions and the following |
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16 | * disclaimer in the documentation and/or other materials provided |
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17 | * with the distribution. |
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18 | * |
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19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 | */ |
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31 | |
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32 | #ifdef __cplusplus |
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33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
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37 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
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40 | # include "config.h" |
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41 | # endif |
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42 | |
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43 | # if HAVE_CLOCK_GETTIME |
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44 | # ifndef EV_USE_MONOTONIC |
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45 | # define EV_USE_MONOTONIC 1 |
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46 | # endif |
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47 | # ifndef EV_USE_REALTIME |
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48 | # define EV_USE_REALTIME 1 |
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49 | # endif |
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50 | # else |
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51 | # ifndef EV_USE_MONOTONIC |
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52 | # define EV_USE_MONOTONIC 0 |
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53 | # endif |
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54 | # ifndef EV_USE_REALTIME |
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55 | # define EV_USE_REALTIME 0 |
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56 | # endif |
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57 | # endif |
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58 | |
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59 | # ifndef EV_USE_SELECT |
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60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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61 | # define EV_USE_SELECT 1 |
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62 | # else |
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63 | # define EV_USE_SELECT 0 |
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64 | # endif |
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65 | # endif |
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66 | |
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67 | # ifndef EV_USE_POLL |
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68 | # if HAVE_POLL && HAVE_POLL_H |
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69 | # define EV_USE_POLL 1 |
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70 | # else |
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71 | # define EV_USE_POLL 0 |
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72 | # endif |
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73 | # endif |
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74 | |
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75 | # ifndef EV_USE_EPOLL |
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76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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77 | # define EV_USE_EPOLL 1 |
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78 | # else |
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79 | # define EV_USE_EPOLL 0 |
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80 | # endif |
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81 | # endif |
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82 | |
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83 | # ifndef EV_USE_KQUEUE |
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84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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85 | # define EV_USE_KQUEUE 1 |
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86 | # else |
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87 | # define EV_USE_KQUEUE 0 |
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88 | # endif |
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89 | # endif |
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90 | |
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91 | # ifndef EV_USE_PORT |
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92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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93 | # define EV_USE_PORT 1 |
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94 | # else |
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95 | # define EV_USE_PORT 0 |
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96 | # endif |
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97 | # endif |
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98 | |
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99 | # ifndef EV_USE_INOTIFY |
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100 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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101 | # define EV_USE_INOTIFY 1 |
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102 | # else |
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103 | # define EV_USE_INOTIFY 0 |
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104 | # endif |
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105 | # endif |
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106 | |
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107 | #endif |
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108 | |
1 | #include <math.h> |
109 | #include <math.h> |
2 | #include <stdlib.h> |
110 | #include <stdlib.h> |
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111 | #include <fcntl.h> |
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112 | #include <stddef.h> |
3 | |
113 | |
4 | #include <stdio.h> |
114 | #include <stdio.h> |
5 | |
115 | |
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116 | #include <assert.h> |
6 | #include <errno.h> |
117 | #include <errno.h> |
7 | #include <sys/time.h> |
118 | #include <sys/types.h> |
8 | #include <time.h> |
119 | #include <time.h> |
9 | |
120 | |
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121 | #include <signal.h> |
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122 | |
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123 | #ifdef EV_H |
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124 | # include EV_H |
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125 | #else |
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126 | # include "ev.h" |
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127 | #endif |
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128 | |
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129 | #ifndef _WIN32 |
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130 | # include <sys/time.h> |
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131 | # include <sys/wait.h> |
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132 | # include <unistd.h> |
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133 | #else |
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134 | # define WIN32_LEAN_AND_MEAN |
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135 | # include <windows.h> |
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136 | # ifndef EV_SELECT_IS_WINSOCKET |
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137 | # define EV_SELECT_IS_WINSOCKET 1 |
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138 | # endif |
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139 | #endif |
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140 | |
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141 | /**/ |
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142 | |
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143 | #ifndef EV_USE_MONOTONIC |
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144 | # define EV_USE_MONOTONIC 0 |
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145 | #endif |
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146 | |
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147 | #ifndef EV_USE_REALTIME |
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148 | # define EV_USE_REALTIME 0 |
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149 | #endif |
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150 | |
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151 | #ifndef EV_USE_SELECT |
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152 | # define EV_USE_SELECT 1 |
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153 | #endif |
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154 | |
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155 | #ifndef EV_USE_POLL |
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156 | # ifdef _WIN32 |
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157 | # define EV_USE_POLL 0 |
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158 | # else |
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159 | # define EV_USE_POLL 1 |
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160 | # endif |
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161 | #endif |
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162 | |
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163 | #ifndef EV_USE_EPOLL |
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164 | # define EV_USE_EPOLL 0 |
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165 | #endif |
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166 | |
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167 | #ifndef EV_USE_KQUEUE |
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168 | # define EV_USE_KQUEUE 0 |
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169 | #endif |
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170 | |
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171 | #ifndef EV_USE_PORT |
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172 | # define EV_USE_PORT 0 |
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173 | #endif |
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174 | |
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175 | #ifndef EV_USE_INOTIFY |
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176 | # define EV_USE_INOTIFY 0 |
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177 | #endif |
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178 | |
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179 | #ifndef EV_PID_HASHSIZE |
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180 | # if EV_MINIMAL |
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181 | # define EV_PID_HASHSIZE 1 |
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182 | # else |
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183 | # define EV_PID_HASHSIZE 16 |
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184 | # endif |
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185 | #endif |
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186 | |
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187 | #ifndef EV_INOTIFY_HASHSIZE |
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188 | # if EV_MINIMAL |
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189 | # define EV_INOTIFY_HASHSIZE 1 |
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190 | # else |
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191 | # define EV_INOTIFY_HASHSIZE 16 |
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192 | # endif |
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193 | #endif |
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194 | |
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195 | /**/ |
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196 | |
10 | #ifdef CLOCK_MONOTONIC |
197 | #ifndef CLOCK_MONOTONIC |
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198 | # undef EV_USE_MONOTONIC |
11 | # define HAVE_MONOTONIC 1 |
199 | # define EV_USE_MONOTONIC 0 |
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200 | #endif |
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201 | |
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202 | #ifndef CLOCK_REALTIME |
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203 | # undef EV_USE_REALTIME |
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204 | # define EV_USE_REALTIME 0 |
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205 | #endif |
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206 | |
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207 | #if EV_SELECT_IS_WINSOCKET |
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208 | # include <winsock.h> |
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209 | #endif |
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210 | |
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211 | #if !EV_STAT_ENABLE |
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212 | # define EV_USE_INOTIFY 0 |
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213 | #endif |
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214 | |
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215 | #if EV_USE_INOTIFY |
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216 | # include <sys/inotify.h> |
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217 | #endif |
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218 | |
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219 | /**/ |
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220 | |
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221 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
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222 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
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223 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
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224 | |
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225 | #if __GNUC__ >= 3 |
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226 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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227 | # define inline_size static inline /* inline for codesize */ |
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228 | # if EV_MINIMAL |
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229 | # define noinline __attribute__ ((noinline)) |
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230 | # define inline_speed static noinline |
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231 | # else |
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232 | # define noinline |
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233 | # define inline_speed static inline |
12 | #endif |
234 | # endif |
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235 | #else |
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236 | # define expect(expr,value) (expr) |
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237 | # define inline_speed static |
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238 | # define inline_size static |
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239 | # define noinline |
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240 | #endif |
13 | |
241 | |
14 | #define HAVE_EPOLL 1 |
242 | #define expect_false(expr) expect ((expr) != 0, 0) |
15 | #define HAVE_REALTIME 1 |
243 | #define expect_true(expr) expect ((expr) != 0, 1) |
16 | #define HAVE_SELECT 0 |
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17 | |
244 | |
18 | #define MAX_BLOCKTIME 60. |
245 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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246 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
19 | |
247 | |
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248 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
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249 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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250 | |
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251 | typedef ev_watcher *W; |
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252 | typedef ev_watcher_list *WL; |
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253 | typedef ev_watcher_time *WT; |
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254 | |
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255 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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256 | |
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257 | #ifdef _WIN32 |
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258 | # include "ev_win32.c" |
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259 | #endif |
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260 | |
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261 | /*****************************************************************************/ |
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262 | |
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263 | static void (*syserr_cb)(const char *msg); |
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264 | |
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265 | void |
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266 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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267 | { |
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268 | syserr_cb = cb; |
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269 | } |
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270 | |
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271 | static void noinline |
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272 | syserr (const char *msg) |
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273 | { |
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274 | if (!msg) |
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275 | msg = "(libev) system error"; |
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276 | |
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277 | if (syserr_cb) |
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278 | syserr_cb (msg); |
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279 | else |
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280 | { |
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281 | perror (msg); |
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282 | abort (); |
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283 | } |
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284 | } |
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285 | |
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286 | static void *(*alloc)(void *ptr, long size); |
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287 | |
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288 | void |
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289 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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290 | { |
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291 | alloc = cb; |
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292 | } |
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293 | |
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294 | inline_speed void * |
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295 | ev_realloc (void *ptr, long size) |
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296 | { |
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297 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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298 | |
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299 | if (!ptr && size) |
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300 | { |
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301 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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302 | abort (); |
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303 | } |
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304 | |
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305 | return ptr; |
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306 | } |
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307 | |
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308 | #define ev_malloc(size) ev_realloc (0, (size)) |
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309 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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310 | |
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311 | /*****************************************************************************/ |
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312 | |
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313 | typedef struct |
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314 | { |
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315 | WL head; |
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316 | unsigned char events; |
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317 | unsigned char reify; |
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318 | #if EV_SELECT_IS_WINSOCKET |
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319 | SOCKET handle; |
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320 | #endif |
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321 | } ANFD; |
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322 | |
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323 | typedef struct |
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324 | { |
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325 | W w; |
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326 | int events; |
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327 | } ANPENDING; |
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328 | |
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329 | #if EV_USE_INOTIFY |
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330 | typedef struct |
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331 | { |
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332 | WL head; |
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333 | } ANFS; |
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334 | #endif |
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335 | |
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336 | #if EV_MULTIPLICITY |
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337 | |
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338 | struct ev_loop |
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339 | { |
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340 | ev_tstamp ev_rt_now; |
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341 | #define ev_rt_now ((loop)->ev_rt_now) |
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342 | #define VAR(name,decl) decl; |
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343 | #include "ev_vars.h" |
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344 | #undef VAR |
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345 | }; |
20 | #include "ev.h" |
346 | #include "ev_wrap.h" |
21 | |
347 | |
22 | struct ev_watcher { |
348 | static struct ev_loop default_loop_struct; |
23 | EV_WATCHER (ev_watcher); |
349 | struct ev_loop *ev_default_loop_ptr; |
24 | }; |
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25 | |
350 | |
26 | struct ev_watcher_list { |
351 | #else |
27 | EV_WATCHER_LIST (ev_watcher_list); |
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28 | }; |
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29 | |
352 | |
30 | ev_tstamp ev_now; |
353 | ev_tstamp ev_rt_now; |
31 | int ev_method; |
354 | #define VAR(name,decl) static decl; |
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355 | #include "ev_vars.h" |
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356 | #undef VAR |
32 | |
357 | |
33 | static int have_monotonic; /* runtime */ |
358 | static int ev_default_loop_ptr; |
34 | |
359 | |
35 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
360 | #endif |
36 | static void (*method_reify)(void); |
361 | |
37 | static void (*method_poll)(ev_tstamp timeout); |
362 | /*****************************************************************************/ |
38 | |
363 | |
39 | ev_tstamp |
364 | ev_tstamp |
40 | ev_time (void) |
365 | ev_time (void) |
41 | { |
366 | { |
42 | #if HAVE_REALTIME |
367 | #if EV_USE_REALTIME |
43 | struct timespec ts; |
368 | struct timespec ts; |
44 | clock_gettime (CLOCK_REALTIME, &ts); |
369 | clock_gettime (CLOCK_REALTIME, &ts); |
45 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
370 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
46 | #else |
371 | #else |
47 | struct timeval tv; |
372 | struct timeval tv; |
48 | gettimeofday (&tv, 0); |
373 | gettimeofday (&tv, 0); |
49 | return tv.tv_sec + tv.tv_usec * 1e-6; |
374 | return tv.tv_sec + tv.tv_usec * 1e-6; |
50 | #endif |
375 | #endif |
51 | } |
376 | } |
52 | |
377 | |
53 | static ev_tstamp |
378 | ev_tstamp inline_size |
54 | get_clock (void) |
379 | get_clock (void) |
55 | { |
380 | { |
56 | #if HAVE_MONOTONIC |
381 | #if EV_USE_MONOTONIC |
57 | if (have_monotonic) |
382 | if (expect_true (have_monotonic)) |
58 | { |
383 | { |
59 | struct timespec ts; |
384 | struct timespec ts; |
60 | clock_gettime (CLOCK_MONOTONIC, &ts); |
385 | clock_gettime (CLOCK_MONOTONIC, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
386 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | } |
387 | } |
63 | #endif |
388 | #endif |
64 | |
389 | |
65 | return ev_time (); |
390 | return ev_time (); |
66 | } |
391 | } |
67 | |
392 | |
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393 | #if EV_MULTIPLICITY |
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394 | ev_tstamp |
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395 | ev_now (EV_P) |
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396 | { |
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397 | return ev_rt_now; |
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398 | } |
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399 | #endif |
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400 | |
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401 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
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402 | |
68 | #define array_needsize(base,cur,cnt,init) \ |
403 | #define array_needsize(type,base,cur,cnt,init) \ |
69 | if ((cnt) > cur) \ |
404 | if (expect_false ((cnt) > cur)) \ |
70 | { \ |
405 | { \ |
71 | int newcnt = cur; \ |
406 | int newcnt = cur; \ |
72 | do \ |
407 | do \ |
73 | { \ |
408 | { \ |
74 | newcnt += (newcnt >> 1) + 16; \ |
409 | newcnt = array_roundsize (type, newcnt << 1); \ |
75 | } \ |
410 | } \ |
76 | while ((cnt) > newcnt); \ |
411 | while ((cnt) > newcnt); \ |
77 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
412 | \ |
78 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
413 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
79 | init (base + cur, newcnt - cur); \ |
414 | init (base + cur, newcnt - cur); \ |
80 | cur = newcnt; \ |
415 | cur = newcnt; \ |
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416 | } |
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417 | |
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418 | #define array_slim(type,stem) \ |
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419 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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420 | { \ |
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421 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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422 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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423 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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424 | } |
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425 | |
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426 | #define array_free(stem, idx) \ |
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427 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
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428 | |
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429 | /*****************************************************************************/ |
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430 | |
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431 | void noinline |
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432 | ev_feed_event (EV_P_ void *w, int revents) |
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433 | { |
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434 | W w_ = (W)w; |
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435 | |
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436 | if (expect_false (w_->pending)) |
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437 | { |
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438 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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439 | return; |
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440 | } |
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441 | |
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442 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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443 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
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444 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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445 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
446 | } |
|
|
447 | |
|
|
448 | void inline_size |
|
|
449 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
450 | { |
|
|
451 | int i; |
|
|
452 | |
|
|
453 | for (i = 0; i < eventcnt; ++i) |
|
|
454 | ev_feed_event (EV_A_ events [i], type); |
|
|
455 | } |
|
|
456 | |
|
|
457 | /*****************************************************************************/ |
|
|
458 | |
|
|
459 | void inline_size |
|
|
460 | anfds_init (ANFD *base, int count) |
|
|
461 | { |
|
|
462 | while (count--) |
|
|
463 | { |
|
|
464 | base->head = 0; |
|
|
465 | base->events = EV_NONE; |
|
|
466 | base->reify = 0; |
|
|
467 | |
|
|
468 | ++base; |
|
|
469 | } |
|
|
470 | } |
|
|
471 | |
|
|
472 | void inline_speed |
|
|
473 | fd_event (EV_P_ int fd, int revents) |
|
|
474 | { |
|
|
475 | ANFD *anfd = anfds + fd; |
|
|
476 | ev_io *w; |
|
|
477 | |
|
|
478 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
479 | { |
|
|
480 | int ev = w->events & revents; |
|
|
481 | |
|
|
482 | if (ev) |
|
|
483 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
484 | } |
|
|
485 | } |
|
|
486 | |
|
|
487 | void |
|
|
488 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
489 | { |
|
|
490 | fd_event (EV_A_ fd, revents); |
|
|
491 | } |
|
|
492 | |
|
|
493 | void inline_size |
|
|
494 | fd_reify (EV_P) |
|
|
495 | { |
|
|
496 | int i; |
|
|
497 | |
|
|
498 | for (i = 0; i < fdchangecnt; ++i) |
|
|
499 | { |
|
|
500 | int fd = fdchanges [i]; |
|
|
501 | ANFD *anfd = anfds + fd; |
|
|
502 | ev_io *w; |
|
|
503 | |
|
|
504 | int events = 0; |
|
|
505 | |
|
|
506 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
507 | events |= w->events; |
|
|
508 | |
|
|
509 | #if EV_SELECT_IS_WINSOCKET |
|
|
510 | if (events) |
|
|
511 | { |
|
|
512 | unsigned long argp; |
|
|
513 | anfd->handle = _get_osfhandle (fd); |
|
|
514 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
515 | } |
|
|
516 | #endif |
|
|
517 | |
|
|
518 | anfd->reify = 0; |
|
|
519 | |
|
|
520 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
521 | anfd->events = events; |
|
|
522 | } |
|
|
523 | |
|
|
524 | fdchangecnt = 0; |
|
|
525 | } |
|
|
526 | |
|
|
527 | void inline_size |
|
|
528 | fd_change (EV_P_ int fd) |
|
|
529 | { |
|
|
530 | if (expect_false (anfds [fd].reify)) |
|
|
531 | return; |
|
|
532 | |
|
|
533 | anfds [fd].reify = 1; |
|
|
534 | |
|
|
535 | ++fdchangecnt; |
|
|
536 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
537 | fdchanges [fdchangecnt - 1] = fd; |
|
|
538 | } |
|
|
539 | |
|
|
540 | void inline_speed |
|
|
541 | fd_kill (EV_P_ int fd) |
|
|
542 | { |
|
|
543 | ev_io *w; |
|
|
544 | |
|
|
545 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
546 | { |
|
|
547 | ev_io_stop (EV_A_ w); |
|
|
548 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
549 | } |
|
|
550 | } |
|
|
551 | |
|
|
552 | int inline_size |
|
|
553 | fd_valid (int fd) |
|
|
554 | { |
|
|
555 | #ifdef _WIN32 |
|
|
556 | return _get_osfhandle (fd) != -1; |
|
|
557 | #else |
|
|
558 | return fcntl (fd, F_GETFD) != -1; |
|
|
559 | #endif |
|
|
560 | } |
|
|
561 | |
|
|
562 | /* called on EBADF to verify fds */ |
|
|
563 | static void noinline |
|
|
564 | fd_ebadf (EV_P) |
|
|
565 | { |
|
|
566 | int fd; |
|
|
567 | |
|
|
568 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
569 | if (anfds [fd].events) |
|
|
570 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
571 | fd_kill (EV_A_ fd); |
|
|
572 | } |
|
|
573 | |
|
|
574 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
575 | static void noinline |
|
|
576 | fd_enomem (EV_P) |
|
|
577 | { |
|
|
578 | int fd; |
|
|
579 | |
|
|
580 | for (fd = anfdmax; fd--; ) |
|
|
581 | if (anfds [fd].events) |
|
|
582 | { |
|
|
583 | fd_kill (EV_A_ fd); |
|
|
584 | return; |
81 | } |
585 | } |
|
|
586 | } |
|
|
587 | |
|
|
588 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
589 | static void noinline |
|
|
590 | fd_rearm_all (EV_P) |
|
|
591 | { |
|
|
592 | int fd; |
|
|
593 | |
|
|
594 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
595 | if (anfds [fd].events) |
|
|
596 | { |
|
|
597 | anfds [fd].events = 0; |
|
|
598 | fd_change (EV_A_ fd); |
|
|
599 | } |
|
|
600 | } |
|
|
601 | |
|
|
602 | /*****************************************************************************/ |
|
|
603 | |
|
|
604 | void inline_speed |
|
|
605 | upheap (WT *heap, int k) |
|
|
606 | { |
|
|
607 | WT w = heap [k]; |
|
|
608 | |
|
|
609 | while (k && heap [k >> 1]->at > w->at) |
|
|
610 | { |
|
|
611 | heap [k] = heap [k >> 1]; |
|
|
612 | ((W)heap [k])->active = k + 1; |
|
|
613 | k >>= 1; |
|
|
614 | } |
|
|
615 | |
|
|
616 | heap [k] = w; |
|
|
617 | ((W)heap [k])->active = k + 1; |
|
|
618 | |
|
|
619 | } |
|
|
620 | |
|
|
621 | void inline_speed |
|
|
622 | downheap (WT *heap, int N, int k) |
|
|
623 | { |
|
|
624 | WT w = heap [k]; |
|
|
625 | |
|
|
626 | while (k < (N >> 1)) |
|
|
627 | { |
|
|
628 | int j = k << 1; |
|
|
629 | |
|
|
630 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
631 | ++j; |
|
|
632 | |
|
|
633 | if (w->at <= heap [j]->at) |
|
|
634 | break; |
|
|
635 | |
|
|
636 | heap [k] = heap [j]; |
|
|
637 | ((W)heap [k])->active = k + 1; |
|
|
638 | k = j; |
|
|
639 | } |
|
|
640 | |
|
|
641 | heap [k] = w; |
|
|
642 | ((W)heap [k])->active = k + 1; |
|
|
643 | } |
|
|
644 | |
|
|
645 | void inline_size |
|
|
646 | adjustheap (WT *heap, int N, int k) |
|
|
647 | { |
|
|
648 | upheap (heap, k); |
|
|
649 | downheap (heap, N, k); |
|
|
650 | } |
|
|
651 | |
|
|
652 | /*****************************************************************************/ |
82 | |
653 | |
83 | typedef struct |
654 | typedef struct |
84 | { |
655 | { |
85 | struct ev_io *head; |
656 | WL head; |
86 | unsigned char wev, rev; /* want, received event set */ |
657 | sig_atomic_t volatile gotsig; |
87 | } ANFD; |
658 | } ANSIG; |
88 | |
659 | |
89 | static ANFD *anfds; |
660 | static ANSIG *signals; |
90 | static int anfdmax; |
661 | static int signalmax; |
91 | |
662 | |
92 | static int *fdchanges; |
663 | static int sigpipe [2]; |
93 | static int fdchangemax, fdchangecnt; |
664 | static sig_atomic_t volatile gotsig; |
|
|
665 | static ev_io sigev; |
|
|
666 | |
|
|
667 | void inline_size |
|
|
668 | signals_init (ANSIG *base, int count) |
|
|
669 | { |
|
|
670 | while (count--) |
|
|
671 | { |
|
|
672 | base->head = 0; |
|
|
673 | base->gotsig = 0; |
|
|
674 | |
|
|
675 | ++base; |
|
|
676 | } |
|
|
677 | } |
94 | |
678 | |
95 | static void |
679 | static void |
96 | anfds_init (ANFD *base, int count) |
680 | sighandler (int signum) |
97 | { |
681 | { |
98 | while (count--) |
682 | #if _WIN32 |
99 | { |
683 | signal (signum, sighandler); |
100 | base->head = 0; |
684 | #endif |
101 | base->wev = base->rev = EV_NONE; |
685 | |
102 | ++base; |
686 | signals [signum - 1].gotsig = 1; |
|
|
687 | |
|
|
688 | if (!gotsig) |
103 | } |
689 | { |
|
|
690 | int old_errno = errno; |
|
|
691 | gotsig = 1; |
|
|
692 | write (sigpipe [1], &signum, 1); |
|
|
693 | errno = old_errno; |
|
|
694 | } |
104 | } |
695 | } |
105 | |
696 | |
106 | typedef struct |
697 | void noinline |
|
|
698 | ev_feed_signal_event (EV_P_ int signum) |
107 | { |
699 | { |
108 | struct ev_watcher *w; |
700 | WL w; |
109 | int events; |
|
|
110 | } ANPENDING; |
|
|
111 | |
701 | |
112 | static ANPENDING *pendings; |
702 | #if EV_MULTIPLICITY |
113 | static int pendingmax, pendingcnt; |
703 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
704 | #endif |
|
|
705 | |
|
|
706 | --signum; |
|
|
707 | |
|
|
708 | if (signum < 0 || signum >= signalmax) |
|
|
709 | return; |
|
|
710 | |
|
|
711 | signals [signum].gotsig = 0; |
|
|
712 | |
|
|
713 | for (w = signals [signum].head; w; w = w->next) |
|
|
714 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
715 | } |
114 | |
716 | |
115 | static void |
717 | static void |
116 | event (struct ev_watcher *w, int events) |
718 | sigcb (EV_P_ ev_io *iow, int revents) |
117 | { |
719 | { |
118 | w->pending = ++pendingcnt; |
720 | int signum; |
119 | array_needsize (pendings, pendingmax, pendingcnt, ); |
721 | |
120 | pendings [pendingcnt - 1].w = w; |
722 | read (sigpipe [0], &revents, 1); |
121 | pendings [pendingcnt - 1].events = events; |
723 | gotsig = 0; |
|
|
724 | |
|
|
725 | for (signum = signalmax; signum--; ) |
|
|
726 | if (signals [signum].gotsig) |
|
|
727 | ev_feed_signal_event (EV_A_ signum + 1); |
122 | } |
728 | } |
|
|
729 | |
|
|
730 | void inline_size |
|
|
731 | fd_intern (int fd) |
|
|
732 | { |
|
|
733 | #ifdef _WIN32 |
|
|
734 | int arg = 1; |
|
|
735 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
736 | #else |
|
|
737 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
738 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
739 | #endif |
|
|
740 | } |
|
|
741 | |
|
|
742 | static void noinline |
|
|
743 | siginit (EV_P) |
|
|
744 | { |
|
|
745 | fd_intern (sigpipe [0]); |
|
|
746 | fd_intern (sigpipe [1]); |
|
|
747 | |
|
|
748 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
749 | ev_io_start (EV_A_ &sigev); |
|
|
750 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
751 | } |
|
|
752 | |
|
|
753 | /*****************************************************************************/ |
|
|
754 | |
|
|
755 | static ev_child *childs [EV_PID_HASHSIZE]; |
|
|
756 | |
|
|
757 | #ifndef _WIN32 |
|
|
758 | |
|
|
759 | static ev_signal childev; |
|
|
760 | |
|
|
761 | void inline_speed |
|
|
762 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
763 | { |
|
|
764 | ev_child *w; |
|
|
765 | |
|
|
766 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
767 | if (w->pid == pid || !w->pid) |
|
|
768 | { |
|
|
769 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
770 | w->rpid = pid; |
|
|
771 | w->rstatus = status; |
|
|
772 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
773 | } |
|
|
774 | } |
|
|
775 | |
|
|
776 | #ifndef WCONTINUED |
|
|
777 | # define WCONTINUED 0 |
|
|
778 | #endif |
123 | |
779 | |
124 | static void |
780 | static void |
125 | fd_event (int fd, int events) |
781 | childcb (EV_P_ ev_signal *sw, int revents) |
126 | { |
782 | { |
127 | ANFD *anfd = anfds + fd; |
783 | int pid, status; |
128 | struct ev_io *w; |
|
|
129 | |
784 | |
130 | for (w = anfd->head; w; w = w->next) |
785 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
131 | { |
786 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
132 | int ev = w->events & events; |
787 | if (!WCONTINUED |
|
|
788 | || errno != EINVAL |
|
|
789 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
790 | return; |
133 | |
791 | |
134 | if (ev) |
792 | /* make sure we are called again until all childs have been reaped */ |
135 | event ((struct ev_watcher *)w, ev); |
793 | /* we need to do it this way so that the callback gets called before we continue */ |
136 | } |
794 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
137 | } |
|
|
138 | |
795 | |
139 | static struct ev_timer **timers; |
796 | child_reap (EV_A_ sw, pid, pid, status); |
140 | static int timermax, timercnt; |
797 | if (EV_PID_HASHSIZE > 1) |
141 | |
798 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
142 | static void |
|
|
143 | upheap (int k) |
|
|
144 | { |
|
|
145 | struct ev_timer *w = timers [k]; |
|
|
146 | |
|
|
147 | while (k && timers [k >> 1]->at > w->at) |
|
|
148 | { |
|
|
149 | timers [k] = timers [k >> 1]; |
|
|
150 | timers [k]->active = k + 1; |
|
|
151 | k >>= 1; |
|
|
152 | } |
|
|
153 | |
|
|
154 | timers [k] = w; |
|
|
155 | timers [k]->active = k + 1; |
|
|
156 | |
|
|
157 | } |
799 | } |
158 | |
800 | |
159 | static void |
801 | #endif |
160 | downheap (int k) |
|
|
161 | { |
|
|
162 | struct ev_timer *w = timers [k]; |
|
|
163 | |
802 | |
164 | while (k <= (timercnt >> 1)) |
803 | /*****************************************************************************/ |
165 | { |
|
|
166 | int j = k << 1; |
|
|
167 | |
804 | |
168 | if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at) |
805 | #if EV_USE_PORT |
169 | ++j; |
806 | # include "ev_port.c" |
170 | |
807 | #endif |
171 | if (w->at <= timers [j]->at) |
808 | #if EV_USE_KQUEUE |
172 | break; |
809 | # include "ev_kqueue.c" |
173 | |
810 | #endif |
174 | timers [k] = timers [j]; |
|
|
175 | timers [k]->active = k; |
|
|
176 | k = j; |
|
|
177 | } |
|
|
178 | |
|
|
179 | timers [k] = w; |
|
|
180 | timers [k]->active = k + 1; |
|
|
181 | } |
|
|
182 | |
|
|
183 | static struct ev_signal **signals; |
|
|
184 | static int signalmax, signalcnt; |
|
|
185 | |
|
|
186 | static void |
|
|
187 | signals_init (struct ev_signal **base, int count) |
|
|
188 | { |
|
|
189 | while (count--) |
|
|
190 | *base++ = 0; |
|
|
191 | } |
|
|
192 | |
|
|
193 | #if HAVE_EPOLL |
811 | #if EV_USE_EPOLL |
194 | # include "ev_epoll.c" |
812 | # include "ev_epoll.c" |
195 | #endif |
813 | #endif |
|
|
814 | #if EV_USE_POLL |
|
|
815 | # include "ev_poll.c" |
|
|
816 | #endif |
196 | #if HAVE_SELECT |
817 | #if EV_USE_SELECT |
197 | # include "ev_select.c" |
818 | # include "ev_select.c" |
198 | #endif |
819 | #endif |
199 | |
820 | |
200 | int ev_init (int flags) |
821 | int |
|
|
822 | ev_version_major (void) |
201 | { |
823 | { |
|
|
824 | return EV_VERSION_MAJOR; |
|
|
825 | } |
|
|
826 | |
|
|
827 | int |
|
|
828 | ev_version_minor (void) |
|
|
829 | { |
|
|
830 | return EV_VERSION_MINOR; |
|
|
831 | } |
|
|
832 | |
|
|
833 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
834 | int inline_size |
|
|
835 | enable_secure (void) |
|
|
836 | { |
|
|
837 | #ifdef _WIN32 |
|
|
838 | return 0; |
|
|
839 | #else |
|
|
840 | return getuid () != geteuid () |
|
|
841 | || getgid () != getegid (); |
|
|
842 | #endif |
|
|
843 | } |
|
|
844 | |
|
|
845 | unsigned int |
|
|
846 | ev_supported_backends (void) |
|
|
847 | { |
|
|
848 | unsigned int flags = 0; |
|
|
849 | |
|
|
850 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
851 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
852 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
853 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
854 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
855 | |
|
|
856 | return flags; |
|
|
857 | } |
|
|
858 | |
|
|
859 | unsigned int |
|
|
860 | ev_recommended_backends (void) |
|
|
861 | { |
|
|
862 | unsigned int flags = ev_supported_backends (); |
|
|
863 | |
|
|
864 | #ifndef __NetBSD__ |
|
|
865 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
866 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
867 | flags &= ~EVBACKEND_KQUEUE; |
|
|
868 | #endif |
|
|
869 | #ifdef __APPLE__ |
|
|
870 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
871 | flags &= ~EVBACKEND_POLL; |
|
|
872 | #endif |
|
|
873 | |
|
|
874 | return flags; |
|
|
875 | } |
|
|
876 | |
|
|
877 | unsigned int |
|
|
878 | ev_embeddable_backends (void) |
|
|
879 | { |
|
|
880 | return EVBACKEND_EPOLL |
|
|
881 | | EVBACKEND_KQUEUE |
|
|
882 | | EVBACKEND_PORT; |
|
|
883 | } |
|
|
884 | |
|
|
885 | unsigned int |
|
|
886 | ev_backend (EV_P) |
|
|
887 | { |
|
|
888 | return backend; |
|
|
889 | } |
|
|
890 | |
|
|
891 | static void noinline |
|
|
892 | loop_init (EV_P_ unsigned int flags) |
|
|
893 | { |
|
|
894 | if (!backend) |
|
|
895 | { |
202 | #if HAVE_MONOTONIC |
896 | #if EV_USE_MONOTONIC |
203 | { |
897 | { |
204 | struct timespec ts; |
898 | struct timespec ts; |
205 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
899 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
206 | have_monotonic = 1; |
900 | have_monotonic = 1; |
207 | } |
901 | } |
208 | #endif |
902 | #endif |
209 | |
903 | |
210 | ev_now = ev_time (); |
904 | ev_rt_now = ev_time (); |
|
|
905 | mn_now = get_clock (); |
|
|
906 | now_floor = mn_now; |
|
|
907 | rtmn_diff = ev_rt_now - mn_now; |
211 | |
908 | |
|
|
909 | /* pid check not overridable via env */ |
|
|
910 | #ifndef _WIN32 |
|
|
911 | if (flags & EVFLAG_FORKCHECK) |
|
|
912 | curpid = getpid (); |
|
|
913 | #endif |
|
|
914 | |
|
|
915 | if (!(flags & EVFLAG_NOENV) |
|
|
916 | && !enable_secure () |
|
|
917 | && getenv ("LIBEV_FLAGS")) |
|
|
918 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
919 | |
|
|
920 | if (!(flags & 0x0000ffffUL)) |
|
|
921 | flags |= ev_recommended_backends (); |
|
|
922 | |
|
|
923 | backend = 0; |
|
|
924 | backend_fd = -1; |
|
|
925 | #if EV_USE_INOTIFY |
|
|
926 | fs_fd = -2; |
|
|
927 | #endif |
|
|
928 | |
|
|
929 | #if EV_USE_PORT |
|
|
930 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
931 | #endif |
|
|
932 | #if EV_USE_KQUEUE |
|
|
933 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
934 | #endif |
212 | #if HAVE_EPOLL |
935 | #if EV_USE_EPOLL |
213 | if (epoll_init (flags)) |
936 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
214 | return ev_method; |
|
|
215 | #endif |
937 | #endif |
|
|
938 | #if EV_USE_POLL |
|
|
939 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
940 | #endif |
216 | #if HAVE_SELECT |
941 | #if EV_USE_SELECT |
217 | if (select_init (flags)) |
942 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
218 | return ev_method; |
|
|
219 | #endif |
943 | #endif |
220 | |
944 | |
221 | ev_method = EVMETHOD_NONE; |
945 | ev_init (&sigev, sigcb); |
222 | return ev_method; |
946 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
947 | } |
223 | } |
948 | } |
224 | |
949 | |
225 | void ev_prefork (void) |
950 | static void noinline |
226 | { |
951 | loop_destroy (EV_P) |
227 | } |
|
|
228 | |
|
|
229 | void ev_postfork_parent (void) |
|
|
230 | { |
|
|
231 | } |
|
|
232 | |
|
|
233 | void ev_postfork_child (void) |
|
|
234 | { |
|
|
235 | #if HAVE_EPOLL |
|
|
236 | epoll_postfork_child (); |
|
|
237 | #endif |
|
|
238 | } |
|
|
239 | |
|
|
240 | static void |
|
|
241 | call_pending () |
|
|
242 | { |
952 | { |
243 | int i; |
953 | int i; |
244 | |
954 | |
245 | for (i = 0; i < pendingcnt; ++i) |
955 | #if EV_USE_INOTIFY |
|
|
956 | if (fs_fd >= 0) |
|
|
957 | close (fs_fd); |
|
|
958 | #endif |
|
|
959 | |
|
|
960 | if (backend_fd >= 0) |
|
|
961 | close (backend_fd); |
|
|
962 | |
|
|
963 | #if EV_USE_PORT |
|
|
964 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
965 | #endif |
|
|
966 | #if EV_USE_KQUEUE |
|
|
967 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
968 | #endif |
|
|
969 | #if EV_USE_EPOLL |
|
|
970 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
971 | #endif |
|
|
972 | #if EV_USE_POLL |
|
|
973 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
974 | #endif |
|
|
975 | #if EV_USE_SELECT |
|
|
976 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
977 | #endif |
|
|
978 | |
|
|
979 | for (i = NUMPRI; i--; ) |
|
|
980 | array_free (pending, [i]); |
|
|
981 | |
|
|
982 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
983 | array_free (fdchange, EMPTY0); |
|
|
984 | array_free (timer, EMPTY0); |
|
|
985 | #if EV_PERIODIC_ENABLE |
|
|
986 | array_free (periodic, EMPTY0); |
|
|
987 | #endif |
|
|
988 | array_free (idle, EMPTY0); |
|
|
989 | array_free (prepare, EMPTY0); |
|
|
990 | array_free (check, EMPTY0); |
|
|
991 | |
|
|
992 | backend = 0; |
|
|
993 | } |
|
|
994 | |
|
|
995 | void inline_size infy_fork (EV_P); |
|
|
996 | |
|
|
997 | void inline_size |
|
|
998 | loop_fork (EV_P) |
|
|
999 | { |
|
|
1000 | #if EV_USE_PORT |
|
|
1001 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1002 | #endif |
|
|
1003 | #if EV_USE_KQUEUE |
|
|
1004 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1005 | #endif |
|
|
1006 | #if EV_USE_EPOLL |
|
|
1007 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1008 | #endif |
|
|
1009 | #if EV_USE_INOTIFY |
|
|
1010 | infy_fork (EV_A); |
|
|
1011 | #endif |
|
|
1012 | |
|
|
1013 | if (ev_is_active (&sigev)) |
|
|
1014 | { |
|
|
1015 | /* default loop */ |
|
|
1016 | |
|
|
1017 | ev_ref (EV_A); |
|
|
1018 | ev_io_stop (EV_A_ &sigev); |
|
|
1019 | close (sigpipe [0]); |
|
|
1020 | close (sigpipe [1]); |
|
|
1021 | |
|
|
1022 | while (pipe (sigpipe)) |
|
|
1023 | syserr ("(libev) error creating pipe"); |
|
|
1024 | |
|
|
1025 | siginit (EV_A); |
246 | { |
1026 | } |
247 | ANPENDING *p = pendings + i; |
|
|
248 | |
1027 | |
249 | if (p->w) |
1028 | postfork = 0; |
|
|
1029 | } |
|
|
1030 | |
|
|
1031 | #if EV_MULTIPLICITY |
|
|
1032 | struct ev_loop * |
|
|
1033 | ev_loop_new (unsigned int flags) |
|
|
1034 | { |
|
|
1035 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1036 | |
|
|
1037 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1038 | |
|
|
1039 | loop_init (EV_A_ flags); |
|
|
1040 | |
|
|
1041 | if (ev_backend (EV_A)) |
|
|
1042 | return loop; |
|
|
1043 | |
|
|
1044 | return 0; |
|
|
1045 | } |
|
|
1046 | |
|
|
1047 | void |
|
|
1048 | ev_loop_destroy (EV_P) |
|
|
1049 | { |
|
|
1050 | loop_destroy (EV_A); |
|
|
1051 | ev_free (loop); |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | void |
|
|
1055 | ev_loop_fork (EV_P) |
|
|
1056 | { |
|
|
1057 | postfork = 1; |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | #endif |
|
|
1061 | |
|
|
1062 | #if EV_MULTIPLICITY |
|
|
1063 | struct ev_loop * |
|
|
1064 | ev_default_loop_init (unsigned int flags) |
|
|
1065 | #else |
|
|
1066 | int |
|
|
1067 | ev_default_loop (unsigned int flags) |
|
|
1068 | #endif |
|
|
1069 | { |
|
|
1070 | if (sigpipe [0] == sigpipe [1]) |
|
|
1071 | if (pipe (sigpipe)) |
|
|
1072 | return 0; |
|
|
1073 | |
|
|
1074 | if (!ev_default_loop_ptr) |
|
|
1075 | { |
|
|
1076 | #if EV_MULTIPLICITY |
|
|
1077 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1078 | #else |
|
|
1079 | ev_default_loop_ptr = 1; |
|
|
1080 | #endif |
|
|
1081 | |
|
|
1082 | loop_init (EV_A_ flags); |
|
|
1083 | |
|
|
1084 | if (ev_backend (EV_A)) |
250 | { |
1085 | { |
251 | p->w->pending = 0; |
1086 | siginit (EV_A); |
252 | p->w->cb (p->w, p->events); |
1087 | |
|
|
1088 | #ifndef _WIN32 |
|
|
1089 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1090 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1091 | ev_signal_start (EV_A_ &childev); |
|
|
1092 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1093 | #endif |
253 | } |
1094 | } |
|
|
1095 | else |
|
|
1096 | ev_default_loop_ptr = 0; |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | return ev_default_loop_ptr; |
|
|
1100 | } |
|
|
1101 | |
|
|
1102 | void |
|
|
1103 | ev_default_destroy (void) |
|
|
1104 | { |
|
|
1105 | #if EV_MULTIPLICITY |
|
|
1106 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1107 | #endif |
|
|
1108 | |
|
|
1109 | #ifndef _WIN32 |
|
|
1110 | ev_ref (EV_A); /* child watcher */ |
|
|
1111 | ev_signal_stop (EV_A_ &childev); |
|
|
1112 | #endif |
|
|
1113 | |
|
|
1114 | ev_ref (EV_A); /* signal watcher */ |
|
|
1115 | ev_io_stop (EV_A_ &sigev); |
|
|
1116 | |
|
|
1117 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1118 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1119 | |
|
|
1120 | loop_destroy (EV_A); |
|
|
1121 | } |
|
|
1122 | |
|
|
1123 | void |
|
|
1124 | ev_default_fork (void) |
|
|
1125 | { |
|
|
1126 | #if EV_MULTIPLICITY |
|
|
1127 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1128 | #endif |
|
|
1129 | |
|
|
1130 | if (backend) |
|
|
1131 | postfork = 1; |
|
|
1132 | } |
|
|
1133 | |
|
|
1134 | /*****************************************************************************/ |
|
|
1135 | |
|
|
1136 | int inline_size |
|
|
1137 | any_pending (EV_P) |
|
|
1138 | { |
|
|
1139 | int pri; |
|
|
1140 | |
|
|
1141 | for (pri = NUMPRI; pri--; ) |
|
|
1142 | if (pendingcnt [pri]) |
|
|
1143 | return 1; |
|
|
1144 | |
|
|
1145 | return 0; |
|
|
1146 | } |
|
|
1147 | |
|
|
1148 | void inline_speed |
|
|
1149 | call_pending (EV_P) |
|
|
1150 | { |
|
|
1151 | int pri; |
|
|
1152 | |
|
|
1153 | for (pri = NUMPRI; pri--; ) |
|
|
1154 | while (pendingcnt [pri]) |
|
|
1155 | { |
|
|
1156 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
|
|
1157 | |
|
|
1158 | if (expect_true (p->w)) |
|
|
1159 | { |
|
|
1160 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1161 | |
|
|
1162 | p->w->pending = 0; |
|
|
1163 | EV_CB_INVOKE (p->w, p->events); |
|
|
1164 | } |
254 | } |
1165 | } |
255 | |
|
|
256 | pendingcnt = 0; |
|
|
257 | } |
1166 | } |
258 | |
1167 | |
259 | static void |
1168 | void inline_size |
260 | timer_reify (void) |
1169 | timers_reify (EV_P) |
261 | { |
1170 | { |
262 | while (timercnt && timers [0]->at <= ev_now) |
1171 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
263 | { |
1172 | { |
264 | struct ev_timer *w = timers [0]; |
1173 | ev_timer *w = timers [0]; |
265 | |
1174 | |
|
|
1175 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
|
|
1176 | |
266 | /* first reschedule timer */ |
1177 | /* first reschedule or stop timer */ |
267 | if (w->repeat) |
1178 | if (w->repeat) |
268 | { |
1179 | { |
269 | fprintf (stderr, "a %f now %f repeat %f, %f\n", w->at, ev_now, w->repeat, w->repeat *1e30);//D |
1180 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
270 | if (w->is_abs) |
1181 | |
271 | w->at += floor ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
|
|
272 | else |
|
|
273 | w->at = ev_now + w->repeat; |
1182 | ((WT)w)->at += w->repeat; |
|
|
1183 | if (((WT)w)->at < mn_now) |
|
|
1184 | ((WT)w)->at = mn_now; |
274 | |
1185 | |
275 | fprintf (stderr, "b %f\n", w->at);//D |
1186 | downheap ((WT *)timers, timercnt, 0); |
276 | |
|
|
277 | downheap (0); |
|
|
278 | } |
1187 | } |
279 | else |
1188 | else |
280 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1189 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
281 | |
1190 | |
282 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1191 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
283 | } |
|
|
284 | } |
|
|
285 | |
|
|
286 | int ev_loop_done; |
|
|
287 | |
|
|
288 | int ev_loop (int flags) |
|
|
289 | { |
|
|
290 | double block; |
|
|
291 | ev_loop_done = flags & EVLOOP_ONESHOT; |
|
|
292 | |
|
|
293 | do |
|
|
294 | { |
1192 | } |
|
|
1193 | } |
|
|
1194 | |
|
|
1195 | #if EV_PERIODIC_ENABLE |
|
|
1196 | void inline_size |
|
|
1197 | periodics_reify (EV_P) |
|
|
1198 | { |
|
|
1199 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1200 | { |
|
|
1201 | ev_periodic *w = periodics [0]; |
|
|
1202 | |
|
|
1203 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
|
|
1204 | |
|
|
1205 | /* first reschedule or stop timer */ |
|
|
1206 | if (w->reschedule_cb) |
|
|
1207 | { |
|
|
1208 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1209 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1210 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1211 | } |
|
|
1212 | else if (w->interval) |
|
|
1213 | { |
|
|
1214 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1215 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1216 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1217 | } |
|
|
1218 | else |
|
|
1219 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1220 | |
|
|
1221 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
|
|
1222 | } |
|
|
1223 | } |
|
|
1224 | |
|
|
1225 | static void noinline |
|
|
1226 | periodics_reschedule (EV_P) |
|
|
1227 | { |
|
|
1228 | int i; |
|
|
1229 | |
|
|
1230 | /* adjust periodics after time jump */ |
|
|
1231 | for (i = 0; i < periodiccnt; ++i) |
|
|
1232 | { |
|
|
1233 | ev_periodic *w = periodics [i]; |
|
|
1234 | |
|
|
1235 | if (w->reschedule_cb) |
|
|
1236 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1237 | else if (w->interval) |
|
|
1238 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1239 | } |
|
|
1240 | |
|
|
1241 | /* now rebuild the heap */ |
|
|
1242 | for (i = periodiccnt >> 1; i--; ) |
|
|
1243 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1244 | } |
|
|
1245 | #endif |
|
|
1246 | |
|
|
1247 | int inline_size |
|
|
1248 | time_update_monotonic (EV_P) |
|
|
1249 | { |
|
|
1250 | mn_now = get_clock (); |
|
|
1251 | |
|
|
1252 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1253 | { |
|
|
1254 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1255 | return 0; |
|
|
1256 | } |
|
|
1257 | else |
|
|
1258 | { |
|
|
1259 | now_floor = mn_now; |
|
|
1260 | ev_rt_now = ev_time (); |
|
|
1261 | return 1; |
|
|
1262 | } |
|
|
1263 | } |
|
|
1264 | |
|
|
1265 | void inline_size |
|
|
1266 | time_update (EV_P) |
|
|
1267 | { |
|
|
1268 | int i; |
|
|
1269 | |
|
|
1270 | #if EV_USE_MONOTONIC |
|
|
1271 | if (expect_true (have_monotonic)) |
|
|
1272 | { |
|
|
1273 | if (time_update_monotonic (EV_A)) |
|
|
1274 | { |
|
|
1275 | ev_tstamp odiff = rtmn_diff; |
|
|
1276 | |
|
|
1277 | /* loop a few times, before making important decisions. |
|
|
1278 | * on the choice of "4": one iteration isn't enough, |
|
|
1279 | * in case we get preempted during the calls to |
|
|
1280 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1281 | * to succeed in that case, though. and looping a few more times |
|
|
1282 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1283 | * in the unlikely event of having been preempted here. |
|
|
1284 | */ |
|
|
1285 | for (i = 4; --i; ) |
|
|
1286 | { |
|
|
1287 | rtmn_diff = ev_rt_now - mn_now; |
|
|
1288 | |
|
|
1289 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1290 | return; /* all is well */ |
|
|
1291 | |
|
|
1292 | ev_rt_now = ev_time (); |
|
|
1293 | mn_now = get_clock (); |
|
|
1294 | now_floor = mn_now; |
|
|
1295 | } |
|
|
1296 | |
|
|
1297 | # if EV_PERIODIC_ENABLE |
|
|
1298 | periodics_reschedule (EV_A); |
|
|
1299 | # endif |
|
|
1300 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1301 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
|
|
1302 | } |
|
|
1303 | } |
|
|
1304 | else |
|
|
1305 | #endif |
|
|
1306 | { |
|
|
1307 | ev_rt_now = ev_time (); |
|
|
1308 | |
|
|
1309 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
|
|
1310 | { |
|
|
1311 | #if EV_PERIODIC_ENABLE |
|
|
1312 | periodics_reschedule (EV_A); |
|
|
1313 | #endif |
|
|
1314 | |
|
|
1315 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
|
|
1316 | for (i = 0; i < timercnt; ++i) |
|
|
1317 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | mn_now = ev_rt_now; |
|
|
1321 | } |
|
|
1322 | } |
|
|
1323 | |
|
|
1324 | void |
|
|
1325 | ev_ref (EV_P) |
|
|
1326 | { |
|
|
1327 | ++activecnt; |
|
|
1328 | } |
|
|
1329 | |
|
|
1330 | void |
|
|
1331 | ev_unref (EV_P) |
|
|
1332 | { |
|
|
1333 | --activecnt; |
|
|
1334 | } |
|
|
1335 | |
|
|
1336 | static int loop_done; |
|
|
1337 | |
|
|
1338 | void |
|
|
1339 | ev_loop (EV_P_ int flags) |
|
|
1340 | { |
|
|
1341 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
|
|
1342 | ? EVUNLOOP_ONE |
|
|
1343 | : EVUNLOOP_CANCEL; |
|
|
1344 | |
|
|
1345 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
|
|
1346 | |
|
|
1347 | while (activecnt) |
|
|
1348 | { |
|
|
1349 | #ifndef _WIN32 |
|
|
1350 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1351 | if (expect_false (getpid () != curpid)) |
|
|
1352 | { |
|
|
1353 | curpid = getpid (); |
|
|
1354 | postfork = 1; |
|
|
1355 | } |
|
|
1356 | #endif |
|
|
1357 | |
|
|
1358 | #if EV_FORK_ENABLE |
|
|
1359 | /* we might have forked, so queue fork handlers */ |
|
|
1360 | if (expect_false (postfork)) |
|
|
1361 | if (forkcnt) |
|
|
1362 | { |
|
|
1363 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1364 | call_pending (EV_A); |
|
|
1365 | } |
|
|
1366 | #endif |
|
|
1367 | |
|
|
1368 | /* queue check watchers (and execute them) */ |
|
|
1369 | if (expect_false (preparecnt)) |
|
|
1370 | { |
|
|
1371 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1372 | call_pending (EV_A); |
|
|
1373 | } |
|
|
1374 | |
|
|
1375 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1376 | if (expect_false (postfork)) |
|
|
1377 | loop_fork (EV_A); |
|
|
1378 | |
295 | /* update fd-related kernel structures */ |
1379 | /* update fd-related kernel structures */ |
296 | method_reify (); fdchangecnt = 0; |
1380 | fd_reify (EV_A); |
297 | |
1381 | |
298 | /* calculate blocking time */ |
1382 | /* calculate blocking time */ |
299 | ev_now = ev_time (); |
1383 | { |
|
|
1384 | ev_tstamp block; |
300 | |
1385 | |
301 | if (flags & EVLOOP_NONBLOCK) |
1386 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
302 | block = 0.; |
1387 | block = 0.; /* do not block at all */ |
303 | else if (!timercnt) |
1388 | else |
|
|
1389 | { |
|
|
1390 | /* update time to cancel out callback processing overhead */ |
|
|
1391 | #if EV_USE_MONOTONIC |
|
|
1392 | if (expect_true (have_monotonic)) |
|
|
1393 | time_update_monotonic (EV_A); |
|
|
1394 | else |
|
|
1395 | #endif |
|
|
1396 | { |
|
|
1397 | ev_rt_now = ev_time (); |
|
|
1398 | mn_now = ev_rt_now; |
|
|
1399 | } |
|
|
1400 | |
304 | block = MAX_BLOCKTIME; |
1401 | block = MAX_BLOCKTIME; |
305 | else |
1402 | |
|
|
1403 | if (timercnt) |
306 | { |
1404 | { |
307 | block = timers [0]->at - ev_now + method_fudge; |
1405 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
|
|
1406 | if (block > to) block = to; |
|
|
1407 | } |
|
|
1408 | |
|
|
1409 | #if EV_PERIODIC_ENABLE |
|
|
1410 | if (periodiccnt) |
|
|
1411 | { |
|
|
1412 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
|
|
1413 | if (block > to) block = to; |
|
|
1414 | } |
|
|
1415 | #endif |
|
|
1416 | |
308 | if (block < 0.) block = 0.; |
1417 | if (expect_false (block < 0.)) block = 0.; |
309 | else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME; |
|
|
310 | } |
1418 | } |
311 | |
1419 | |
312 | fprintf (stderr, "block %f\n", block);//D |
1420 | backend_poll (EV_A_ block); |
313 | method_poll (block); |
1421 | } |
314 | |
1422 | |
|
|
1423 | /* update ev_rt_now, do magic */ |
|
|
1424 | time_update (EV_A); |
|
|
1425 | |
315 | /* put pending timers into pendign queue and reschedule them */ |
1426 | /* queue pending timers and reschedule them */ |
316 | timer_reify (); |
1427 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1428 | #if EV_PERIODIC_ENABLE |
|
|
1429 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1430 | #endif |
317 | |
1431 | |
318 | ev_now = ev_time (); |
1432 | /* queue idle watchers unless other events are pending */ |
|
|
1433 | if (idlecnt && !any_pending (EV_A)) |
|
|
1434 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1435 | |
|
|
1436 | /* queue check watchers, to be executed first */ |
|
|
1437 | if (expect_false (checkcnt)) |
|
|
1438 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1439 | |
319 | call_pending (); |
1440 | call_pending (EV_A); |
320 | } |
|
|
321 | while (!ev_loop_done); |
|
|
322 | } |
|
|
323 | |
1441 | |
324 | static void |
1442 | if (expect_false (loop_done)) |
325 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1443 | break; |
|
|
1444 | } |
|
|
1445 | |
|
|
1446 | if (loop_done == EVUNLOOP_ONE) |
|
|
1447 | loop_done = EVUNLOOP_CANCEL; |
|
|
1448 | } |
|
|
1449 | |
|
|
1450 | void |
|
|
1451 | ev_unloop (EV_P_ int how) |
|
|
1452 | { |
|
|
1453 | loop_done = how; |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | /*****************************************************************************/ |
|
|
1457 | |
|
|
1458 | void inline_size |
|
|
1459 | wlist_add (WL *head, WL elem) |
326 | { |
1460 | { |
327 | elem->next = *head; |
1461 | elem->next = *head; |
328 | *head = elem; |
1462 | *head = elem; |
329 | } |
1463 | } |
330 | |
1464 | |
331 | static void |
1465 | void inline_size |
332 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1466 | wlist_del (WL *head, WL elem) |
333 | { |
1467 | { |
334 | while (*head) |
1468 | while (*head) |
335 | { |
1469 | { |
336 | if (*head == elem) |
1470 | if (*head == elem) |
337 | { |
1471 | { |
… | |
… | |
341 | |
1475 | |
342 | head = &(*head)->next; |
1476 | head = &(*head)->next; |
343 | } |
1477 | } |
344 | } |
1478 | } |
345 | |
1479 | |
|
|
1480 | void inline_speed |
|
|
1481 | ev_clear_pending (EV_P_ W w) |
|
|
1482 | { |
|
|
1483 | if (w->pending) |
|
|
1484 | { |
|
|
1485 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1486 | w->pending = 0; |
|
|
1487 | } |
|
|
1488 | } |
|
|
1489 | |
|
|
1490 | void inline_speed |
|
|
1491 | ev_start (EV_P_ W w, int active) |
|
|
1492 | { |
|
|
1493 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1494 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1495 | |
|
|
1496 | w->active = active; |
|
|
1497 | ev_ref (EV_A); |
|
|
1498 | } |
|
|
1499 | |
|
|
1500 | void inline_size |
|
|
1501 | ev_stop (EV_P_ W w) |
|
|
1502 | { |
|
|
1503 | ev_unref (EV_A); |
|
|
1504 | w->active = 0; |
|
|
1505 | } |
|
|
1506 | |
|
|
1507 | /*****************************************************************************/ |
|
|
1508 | |
|
|
1509 | void |
|
|
1510 | ev_io_start (EV_P_ ev_io *w) |
|
|
1511 | { |
|
|
1512 | int fd = w->fd; |
|
|
1513 | |
|
|
1514 | if (expect_false (ev_is_active (w))) |
|
|
1515 | return; |
|
|
1516 | |
|
|
1517 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1518 | |
|
|
1519 | ev_start (EV_A_ (W)w, 1); |
|
|
1520 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1521 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1522 | |
|
|
1523 | fd_change (EV_A_ fd); |
|
|
1524 | } |
|
|
1525 | |
|
|
1526 | void |
|
|
1527 | ev_io_stop (EV_P_ ev_io *w) |
|
|
1528 | { |
|
|
1529 | ev_clear_pending (EV_A_ (W)w); |
|
|
1530 | if (expect_false (!ev_is_active (w))) |
|
|
1531 | return; |
|
|
1532 | |
|
|
1533 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1534 | |
|
|
1535 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1536 | ev_stop (EV_A_ (W)w); |
|
|
1537 | |
|
|
1538 | fd_change (EV_A_ w->fd); |
|
|
1539 | } |
|
|
1540 | |
|
|
1541 | void |
|
|
1542 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
1543 | { |
|
|
1544 | if (expect_false (ev_is_active (w))) |
|
|
1545 | return; |
|
|
1546 | |
|
|
1547 | ((WT)w)->at += mn_now; |
|
|
1548 | |
|
|
1549 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1550 | |
|
|
1551 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1552 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
|
|
1553 | timers [timercnt - 1] = w; |
|
|
1554 | upheap ((WT *)timers, timercnt - 1); |
|
|
1555 | |
|
|
1556 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
|
|
1557 | } |
|
|
1558 | |
|
|
1559 | void |
|
|
1560 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
1561 | { |
|
|
1562 | ev_clear_pending (EV_A_ (W)w); |
|
|
1563 | if (expect_false (!ev_is_active (w))) |
|
|
1564 | return; |
|
|
1565 | |
|
|
1566 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1567 | |
|
|
1568 | { |
|
|
1569 | int active = ((W)w)->active; |
|
|
1570 | |
|
|
1571 | if (expect_true (--active < --timercnt)) |
|
|
1572 | { |
|
|
1573 | timers [active] = timers [timercnt]; |
|
|
1574 | adjustheap ((WT *)timers, timercnt, active); |
|
|
1575 | } |
|
|
1576 | } |
|
|
1577 | |
|
|
1578 | ((WT)w)->at -= mn_now; |
|
|
1579 | |
|
|
1580 | ev_stop (EV_A_ (W)w); |
|
|
1581 | } |
|
|
1582 | |
|
|
1583 | void |
|
|
1584 | ev_timer_again (EV_P_ ev_timer *w) |
|
|
1585 | { |
|
|
1586 | if (ev_is_active (w)) |
|
|
1587 | { |
|
|
1588 | if (w->repeat) |
|
|
1589 | { |
|
|
1590 | ((WT)w)->at = mn_now + w->repeat; |
|
|
1591 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1592 | } |
|
|
1593 | else |
|
|
1594 | ev_timer_stop (EV_A_ w); |
|
|
1595 | } |
|
|
1596 | else if (w->repeat) |
|
|
1597 | { |
|
|
1598 | w->at = w->repeat; |
|
|
1599 | ev_timer_start (EV_A_ w); |
|
|
1600 | } |
|
|
1601 | } |
|
|
1602 | |
|
|
1603 | #if EV_PERIODIC_ENABLE |
|
|
1604 | void |
|
|
1605 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
1606 | { |
|
|
1607 | if (expect_false (ev_is_active (w))) |
|
|
1608 | return; |
|
|
1609 | |
|
|
1610 | if (w->reschedule_cb) |
|
|
1611 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1612 | else if (w->interval) |
|
|
1613 | { |
|
|
1614 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1615 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1616 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1617 | } |
|
|
1618 | |
|
|
1619 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1620 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
|
|
1621 | periodics [periodiccnt - 1] = w; |
|
|
1622 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1623 | |
|
|
1624 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
|
|
1625 | } |
|
|
1626 | |
|
|
1627 | void |
|
|
1628 | ev_periodic_stop (EV_P_ ev_periodic *w) |
|
|
1629 | { |
|
|
1630 | ev_clear_pending (EV_A_ (W)w); |
|
|
1631 | if (expect_false (!ev_is_active (w))) |
|
|
1632 | return; |
|
|
1633 | |
|
|
1634 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1635 | |
|
|
1636 | { |
|
|
1637 | int active = ((W)w)->active; |
|
|
1638 | |
|
|
1639 | if (expect_true (--active < --periodiccnt)) |
|
|
1640 | { |
|
|
1641 | periodics [active] = periodics [periodiccnt]; |
|
|
1642 | adjustheap ((WT *)periodics, periodiccnt, active); |
|
|
1643 | } |
|
|
1644 | } |
|
|
1645 | |
|
|
1646 | ev_stop (EV_A_ (W)w); |
|
|
1647 | } |
|
|
1648 | |
|
|
1649 | void |
|
|
1650 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1651 | { |
|
|
1652 | /* TODO: use adjustheap and recalculation */ |
|
|
1653 | ev_periodic_stop (EV_A_ w); |
|
|
1654 | ev_periodic_start (EV_A_ w); |
|
|
1655 | } |
|
|
1656 | #endif |
|
|
1657 | |
|
|
1658 | #ifndef SA_RESTART |
|
|
1659 | # define SA_RESTART 0 |
|
|
1660 | #endif |
|
|
1661 | |
|
|
1662 | void |
|
|
1663 | ev_signal_start (EV_P_ ev_signal *w) |
|
|
1664 | { |
|
|
1665 | #if EV_MULTIPLICITY |
|
|
1666 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1667 | #endif |
|
|
1668 | if (expect_false (ev_is_active (w))) |
|
|
1669 | return; |
|
|
1670 | |
|
|
1671 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1672 | |
|
|
1673 | ev_start (EV_A_ (W)w, 1); |
|
|
1674 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1675 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1676 | |
|
|
1677 | if (!((WL)w)->next) |
|
|
1678 | { |
|
|
1679 | #if _WIN32 |
|
|
1680 | signal (w->signum, sighandler); |
|
|
1681 | #else |
|
|
1682 | struct sigaction sa; |
|
|
1683 | sa.sa_handler = sighandler; |
|
|
1684 | sigfillset (&sa.sa_mask); |
|
|
1685 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
|
|
1686 | sigaction (w->signum, &sa, 0); |
|
|
1687 | #endif |
|
|
1688 | } |
|
|
1689 | } |
|
|
1690 | |
|
|
1691 | void |
|
|
1692 | ev_signal_stop (EV_P_ ev_signal *w) |
|
|
1693 | { |
|
|
1694 | ev_clear_pending (EV_A_ (W)w); |
|
|
1695 | if (expect_false (!ev_is_active (w))) |
|
|
1696 | return; |
|
|
1697 | |
|
|
1698 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
|
|
1699 | ev_stop (EV_A_ (W)w); |
|
|
1700 | |
|
|
1701 | if (!signals [w->signum - 1].head) |
|
|
1702 | signal (w->signum, SIG_DFL); |
|
|
1703 | } |
|
|
1704 | |
|
|
1705 | void |
|
|
1706 | ev_child_start (EV_P_ ev_child *w) |
|
|
1707 | { |
|
|
1708 | #if EV_MULTIPLICITY |
|
|
1709 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1710 | #endif |
|
|
1711 | if (expect_false (ev_is_active (w))) |
|
|
1712 | return; |
|
|
1713 | |
|
|
1714 | ev_start (EV_A_ (W)w, 1); |
|
|
1715 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
1716 | } |
|
|
1717 | |
|
|
1718 | void |
|
|
1719 | ev_child_stop (EV_P_ ev_child *w) |
|
|
1720 | { |
|
|
1721 | ev_clear_pending (EV_A_ (W)w); |
|
|
1722 | if (expect_false (!ev_is_active (w))) |
|
|
1723 | return; |
|
|
1724 | |
|
|
1725 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
1726 | ev_stop (EV_A_ (W)w); |
|
|
1727 | } |
|
|
1728 | |
|
|
1729 | #if EV_STAT_ENABLE |
|
|
1730 | |
|
|
1731 | # ifdef _WIN32 |
|
|
1732 | # undef lstat |
|
|
1733 | # define lstat(a,b) _stati64 (a,b) |
|
|
1734 | # endif |
|
|
1735 | |
|
|
1736 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
1737 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
1738 | |
|
|
1739 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
1740 | |
|
|
1741 | #if EV_USE_INOTIFY |
|
|
1742 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
1743 | |
|
|
1744 | static void noinline |
|
|
1745 | infy_add (EV_P_ ev_stat *w) |
|
|
1746 | { |
|
|
1747 | 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); |
|
|
1748 | |
|
|
1749 | if (w->wd < 0) |
|
|
1750 | { |
|
|
1751 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
1752 | |
|
|
1753 | /* monitor some parent directory for speedup hints */ |
|
|
1754 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
1755 | { |
|
|
1756 | char path [4096]; |
|
|
1757 | strcpy (path, w->path); |
|
|
1758 | |
|
|
1759 | do |
|
|
1760 | { |
|
|
1761 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
1762 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
1763 | |
|
|
1764 | char *pend = strrchr (path, '/'); |
|
|
1765 | |
|
|
1766 | if (!pend) |
|
|
1767 | break; /* whoops, no '/', complain to your admin */ |
|
|
1768 | |
|
|
1769 | *pend = 0; |
|
|
1770 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
1771 | } |
|
|
1772 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
1773 | } |
|
|
1774 | } |
|
|
1775 | else |
|
|
1776 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
1777 | |
|
|
1778 | if (w->wd >= 0) |
|
|
1779 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
1780 | } |
|
|
1781 | |
|
|
1782 | static void noinline |
|
|
1783 | infy_del (EV_P_ ev_stat *w) |
|
|
1784 | { |
|
|
1785 | int slot; |
|
|
1786 | int wd = w->wd; |
|
|
1787 | |
|
|
1788 | if (wd < 0) |
|
|
1789 | return; |
|
|
1790 | |
|
|
1791 | w->wd = -2; |
|
|
1792 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
1793 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
1794 | |
|
|
1795 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
1796 | inotify_rm_watch (fs_fd, wd); |
|
|
1797 | } |
|
|
1798 | |
|
|
1799 | static void noinline |
|
|
1800 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
1801 | { |
|
|
1802 | if (slot < 0) |
|
|
1803 | /* overflow, need to check for all hahs slots */ |
|
|
1804 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1805 | infy_wd (EV_A_ slot, wd, ev); |
|
|
1806 | else |
|
|
1807 | { |
|
|
1808 | WL w_; |
|
|
1809 | |
|
|
1810 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
1811 | { |
|
|
1812 | ev_stat *w = (ev_stat *)w_; |
|
|
1813 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
1814 | |
|
|
1815 | if (w->wd == wd || wd == -1) |
|
|
1816 | { |
|
|
1817 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
1818 | { |
|
|
1819 | w->wd = -1; |
|
|
1820 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1821 | } |
|
|
1822 | |
|
|
1823 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
1824 | } |
|
|
1825 | } |
|
|
1826 | } |
|
|
1827 | } |
|
|
1828 | |
346 | static void |
1829 | static void |
347 | ev_start (struct ev_watcher *w, int active) |
1830 | infy_cb (EV_P_ ev_io *w, int revents) |
348 | { |
1831 | { |
349 | w->pending = 0; |
1832 | char buf [EV_INOTIFY_BUFSIZE]; |
350 | w->active = active; |
1833 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
1834 | int ofs; |
|
|
1835 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
1836 | |
|
|
1837 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
1838 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
1839 | } |
|
|
1840 | |
|
|
1841 | void inline_size |
|
|
1842 | infy_init (EV_P) |
|
|
1843 | { |
|
|
1844 | if (fs_fd != -2) |
|
|
1845 | return; |
|
|
1846 | |
|
|
1847 | fs_fd = inotify_init (); |
|
|
1848 | |
|
|
1849 | if (fs_fd >= 0) |
|
|
1850 | { |
|
|
1851 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
1852 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
1853 | ev_io_start (EV_A_ &fs_w); |
|
|
1854 | } |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | void inline_size |
|
|
1858 | infy_fork (EV_P) |
|
|
1859 | { |
|
|
1860 | int slot; |
|
|
1861 | |
|
|
1862 | if (fs_fd < 0) |
|
|
1863 | return; |
|
|
1864 | |
|
|
1865 | close (fs_fd); |
|
|
1866 | fs_fd = inotify_init (); |
|
|
1867 | |
|
|
1868 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1869 | { |
|
|
1870 | WL w_ = fs_hash [slot].head; |
|
|
1871 | fs_hash [slot].head = 0; |
|
|
1872 | |
|
|
1873 | while (w_) |
|
|
1874 | { |
|
|
1875 | ev_stat *w = (ev_stat *)w_; |
|
|
1876 | w_ = w_->next; /* lets us add this watcher */ |
|
|
1877 | |
|
|
1878 | w->wd = -1; |
|
|
1879 | |
|
|
1880 | if (fs_fd >= 0) |
|
|
1881 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1882 | else |
|
|
1883 | ev_timer_start (EV_A_ &w->timer); |
|
|
1884 | } |
|
|
1885 | |
|
|
1886 | } |
|
|
1887 | } |
|
|
1888 | |
|
|
1889 | #endif |
|
|
1890 | |
|
|
1891 | void |
|
|
1892 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
1893 | { |
|
|
1894 | if (lstat (w->path, &w->attr) < 0) |
|
|
1895 | w->attr.st_nlink = 0; |
|
|
1896 | else if (!w->attr.st_nlink) |
|
|
1897 | w->attr.st_nlink = 1; |
|
|
1898 | } |
|
|
1899 | |
|
|
1900 | static void noinline |
|
|
1901 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
1902 | { |
|
|
1903 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
1904 | |
|
|
1905 | /* we copy this here each the time so that */ |
|
|
1906 | /* prev has the old value when the callback gets invoked */ |
|
|
1907 | w->prev = w->attr; |
|
|
1908 | ev_stat_stat (EV_A_ w); |
|
|
1909 | |
|
|
1910 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
1911 | if ( |
|
|
1912 | w->prev.st_dev != w->attr.st_dev |
|
|
1913 | || w->prev.st_ino != w->attr.st_ino |
|
|
1914 | || w->prev.st_mode != w->attr.st_mode |
|
|
1915 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
1916 | || w->prev.st_uid != w->attr.st_uid |
|
|
1917 | || w->prev.st_gid != w->attr.st_gid |
|
|
1918 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
1919 | || w->prev.st_size != w->attr.st_size |
|
|
1920 | || w->prev.st_atime != w->attr.st_atime |
|
|
1921 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
1922 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
1923 | ) { |
|
|
1924 | #if EV_USE_INOTIFY |
|
|
1925 | infy_del (EV_A_ w); |
|
|
1926 | infy_add (EV_A_ w); |
|
|
1927 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
1928 | #endif |
|
|
1929 | |
|
|
1930 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
1931 | } |
|
|
1932 | } |
|
|
1933 | |
|
|
1934 | void |
|
|
1935 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
1936 | { |
|
|
1937 | if (expect_false (ev_is_active (w))) |
|
|
1938 | return; |
|
|
1939 | |
|
|
1940 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
1941 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
1942 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
1943 | |
|
|
1944 | ev_stat_stat (EV_A_ w); |
|
|
1945 | |
|
|
1946 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
1947 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
1948 | |
|
|
1949 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
1950 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
1951 | |
|
|
1952 | #if EV_USE_INOTIFY |
|
|
1953 | infy_init (EV_A); |
|
|
1954 | |
|
|
1955 | if (fs_fd >= 0) |
|
|
1956 | infy_add (EV_A_ w); |
|
|
1957 | else |
|
|
1958 | #endif |
|
|
1959 | ev_timer_start (EV_A_ &w->timer); |
|
|
1960 | |
|
|
1961 | ev_start (EV_A_ (W)w, 1); |
|
|
1962 | } |
|
|
1963 | |
|
|
1964 | void |
|
|
1965 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
1966 | { |
|
|
1967 | ev_clear_pending (EV_A_ (W)w); |
|
|
1968 | if (expect_false (!ev_is_active (w))) |
|
|
1969 | return; |
|
|
1970 | |
|
|
1971 | #if EV_USE_INOTIFY |
|
|
1972 | infy_del (EV_A_ w); |
|
|
1973 | #endif |
|
|
1974 | ev_timer_stop (EV_A_ &w->timer); |
|
|
1975 | |
|
|
1976 | ev_stop (EV_A_ (W)w); |
|
|
1977 | } |
|
|
1978 | #endif |
|
|
1979 | |
|
|
1980 | void |
|
|
1981 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
1982 | { |
|
|
1983 | if (expect_false (ev_is_active (w))) |
|
|
1984 | return; |
|
|
1985 | |
|
|
1986 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1987 | array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1988 | idles [idlecnt - 1] = w; |
|
|
1989 | } |
|
|
1990 | |
|
|
1991 | void |
|
|
1992 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
1993 | { |
|
|
1994 | ev_clear_pending (EV_A_ (W)w); |
|
|
1995 | if (expect_false (!ev_is_active (w))) |
|
|
1996 | return; |
|
|
1997 | |
|
|
1998 | { |
|
|
1999 | int active = ((W)w)->active; |
|
|
2000 | idles [active - 1] = idles [--idlecnt]; |
|
|
2001 | ((W)idles [active - 1])->active = active; |
|
|
2002 | } |
|
|
2003 | |
|
|
2004 | ev_stop (EV_A_ (W)w); |
|
|
2005 | } |
|
|
2006 | |
|
|
2007 | void |
|
|
2008 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
2009 | { |
|
|
2010 | if (expect_false (ev_is_active (w))) |
|
|
2011 | return; |
|
|
2012 | |
|
|
2013 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
2014 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
2015 | prepares [preparecnt - 1] = w; |
|
|
2016 | } |
|
|
2017 | |
|
|
2018 | void |
|
|
2019 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
2020 | { |
|
|
2021 | ev_clear_pending (EV_A_ (W)w); |
|
|
2022 | if (expect_false (!ev_is_active (w))) |
|
|
2023 | return; |
|
|
2024 | |
|
|
2025 | { |
|
|
2026 | int active = ((W)w)->active; |
|
|
2027 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2028 | ((W)prepares [active - 1])->active = active; |
|
|
2029 | } |
|
|
2030 | |
|
|
2031 | ev_stop (EV_A_ (W)w); |
|
|
2032 | } |
|
|
2033 | |
|
|
2034 | void |
|
|
2035 | ev_check_start (EV_P_ ev_check *w) |
|
|
2036 | { |
|
|
2037 | if (expect_false (ev_is_active (w))) |
|
|
2038 | return; |
|
|
2039 | |
|
|
2040 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
2041 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
2042 | checks [checkcnt - 1] = w; |
|
|
2043 | } |
|
|
2044 | |
|
|
2045 | void |
|
|
2046 | ev_check_stop (EV_P_ ev_check *w) |
|
|
2047 | { |
|
|
2048 | ev_clear_pending (EV_A_ (W)w); |
|
|
2049 | if (expect_false (!ev_is_active (w))) |
|
|
2050 | return; |
|
|
2051 | |
|
|
2052 | { |
|
|
2053 | int active = ((W)w)->active; |
|
|
2054 | checks [active - 1] = checks [--checkcnt]; |
|
|
2055 | ((W)checks [active - 1])->active = active; |
|
|
2056 | } |
|
|
2057 | |
|
|
2058 | ev_stop (EV_A_ (W)w); |
|
|
2059 | } |
|
|
2060 | |
|
|
2061 | #if EV_EMBED_ENABLE |
|
|
2062 | void noinline |
|
|
2063 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2064 | { |
|
|
2065 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
351 | } |
2066 | } |
352 | |
2067 | |
353 | static void |
2068 | static void |
354 | ev_stop (struct ev_watcher *w) |
2069 | embed_cb (EV_P_ ev_io *io, int revents) |
355 | { |
2070 | { |
356 | if (w->pending) |
2071 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
357 | pendings [w->pending - 1].w = 0; |
|
|
358 | |
2072 | |
359 | w->active = 0; |
|
|
360 | /* nop */ |
|
|
361 | } |
|
|
362 | |
|
|
363 | void |
|
|
364 | evio_start (struct ev_io *w) |
|
|
365 | { |
|
|
366 | if (ev_is_active (w)) |
2073 | if (ev_cb (w)) |
367 | return; |
2074 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
368 | |
|
|
369 | int fd = w->fd; |
|
|
370 | |
|
|
371 | ev_start ((struct ev_watcher *)w, 1); |
|
|
372 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
373 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
|
|
374 | |
|
|
375 | ++fdchangecnt; |
|
|
376 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
377 | fdchanges [fdchangecnt - 1] = fd; |
|
|
378 | } |
|
|
379 | |
|
|
380 | void |
|
|
381 | evio_stop (struct ev_io *w) |
|
|
382 | { |
|
|
383 | if (!ev_is_active (w)) |
|
|
384 | return; |
|
|
385 | |
|
|
386 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
|
|
387 | ev_stop ((struct ev_watcher *)w); |
|
|
388 | |
|
|
389 | ++fdchangecnt; |
|
|
390 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
391 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
392 | } |
|
|
393 | |
|
|
394 | void |
|
|
395 | evtimer_start (struct ev_timer *w) |
|
|
396 | { |
|
|
397 | if (ev_is_active (w)) |
|
|
398 | return; |
|
|
399 | |
|
|
400 | fprintf (stderr, "t1 %f a %d\n", w->at, w->is_abs);//D |
|
|
401 | if (w->is_abs) |
|
|
402 | { |
|
|
403 | if (w->repeat) |
|
|
404 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
405 | } |
|
|
406 | else |
2075 | else |
407 | w->at += ev_now; |
2076 | ev_embed_sweep (loop, w); |
408 | fprintf (stderr, "t2 %f a %d\n", w->at, w->is_abs);//D |
|
|
409 | |
|
|
410 | ev_start ((struct ev_watcher *)w, ++timercnt); |
|
|
411 | array_needsize (timers, timermax, timercnt, ); |
|
|
412 | timers [timercnt - 1] = w; |
|
|
413 | upheap (timercnt - 1); |
|
|
414 | } |
2077 | } |
415 | |
2078 | |
416 | void |
2079 | void |
417 | evtimer_stop (struct ev_timer *w) |
2080 | ev_embed_start (EV_P_ ev_embed *w) |
418 | { |
2081 | { |
|
|
2082 | if (expect_false (ev_is_active (w))) |
|
|
2083 | return; |
|
|
2084 | |
|
|
2085 | { |
|
|
2086 | struct ev_loop *loop = w->loop; |
|
|
2087 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2088 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
2089 | } |
|
|
2090 | |
|
|
2091 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2092 | ev_io_start (EV_A_ &w->io); |
|
|
2093 | |
|
|
2094 | ev_start (EV_A_ (W)w, 1); |
|
|
2095 | } |
|
|
2096 | |
|
|
2097 | void |
|
|
2098 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2099 | { |
|
|
2100 | ev_clear_pending (EV_A_ (W)w); |
419 | if (!ev_is_active (w)) |
2101 | if (expect_false (!ev_is_active (w))) |
420 | return; |
2102 | return; |
421 | |
2103 | |
422 | timers [w->active - 1] = timers [--timercnt]; |
2104 | ev_io_stop (EV_A_ &w->io); |
423 | downheap (w->active - 1); |
|
|
424 | ev_stop ((struct ev_watcher *)w); |
|
|
425 | } |
|
|
426 | |
2105 | |
|
|
2106 | ev_stop (EV_A_ (W)w); |
|
|
2107 | } |
|
|
2108 | #endif |
|
|
2109 | |
|
|
2110 | #if EV_FORK_ENABLE |
427 | void |
2111 | void |
428 | evsignal_start (struct ev_signal *w) |
2112 | ev_fork_start (EV_P_ ev_fork *w) |
429 | { |
2113 | { |
430 | if (ev_is_active (w)) |
2114 | if (expect_false (ev_is_active (w))) |
431 | return; |
2115 | return; |
432 | |
2116 | |
433 | ev_start ((struct ev_watcher *)w, 1); |
2117 | ev_start (EV_A_ (W)w, ++forkcnt); |
434 | array_needsize (signals, signalmax, w->signum, signals_init); |
2118 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
435 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
2119 | forks [forkcnt - 1] = w; |
436 | } |
2120 | } |
437 | |
2121 | |
438 | void |
2122 | void |
439 | evsignal_stop (struct ev_signal *w) |
2123 | ev_fork_stop (EV_P_ ev_fork *w) |
440 | { |
2124 | { |
|
|
2125 | ev_clear_pending (EV_A_ (W)w); |
441 | if (!ev_is_active (w)) |
2126 | if (expect_false (!ev_is_active (w))) |
442 | return; |
2127 | return; |
443 | |
2128 | |
444 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w); |
2129 | { |
445 | ev_stop ((struct ev_watcher *)w); |
2130 | int active = ((W)w)->active; |
|
|
2131 | forks [active - 1] = forks [--forkcnt]; |
|
|
2132 | ((W)forks [active - 1])->active = active; |
|
|
2133 | } |
|
|
2134 | |
|
|
2135 | ev_stop (EV_A_ (W)w); |
446 | } |
2136 | } |
|
|
2137 | #endif |
447 | |
2138 | |
448 | /*****************************************************************************/ |
2139 | /*****************************************************************************/ |
449 | #if 1 |
2140 | |
|
|
2141 | struct ev_once |
|
|
2142 | { |
|
|
2143 | ev_io io; |
|
|
2144 | ev_timer to; |
|
|
2145 | void (*cb)(int revents, void *arg); |
|
|
2146 | void *arg; |
|
|
2147 | }; |
450 | |
2148 | |
451 | static void |
2149 | static void |
452 | sin_cb (struct ev_io *w, int revents) |
2150 | once_cb (EV_P_ struct ev_once *once, int revents) |
453 | { |
2151 | { |
454 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
2152 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
2153 | void *arg = once->arg; |
|
|
2154 | |
|
|
2155 | ev_io_stop (EV_A_ &once->io); |
|
|
2156 | ev_timer_stop (EV_A_ &once->to); |
|
|
2157 | ev_free (once); |
|
|
2158 | |
|
|
2159 | cb (revents, arg); |
455 | } |
2160 | } |
456 | |
2161 | |
457 | static void |
2162 | static void |
|
|
2163 | once_cb_io (EV_P_ ev_io *w, int revents) |
|
|
2164 | { |
|
|
2165 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
|
|
2166 | } |
|
|
2167 | |
|
|
2168 | static void |
458 | ocb (struct ev_timer *w, int revents) |
2169 | once_cb_to (EV_P_ ev_timer *w, int revents) |
459 | { |
2170 | { |
460 | fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
2171 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
461 | } |
2172 | } |
462 | |
2173 | |
463 | int main (void) |
2174 | void |
|
|
2175 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
464 | { |
2176 | { |
465 | struct ev_io sin; |
2177 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
466 | |
2178 | |
467 | ev_init (0); |
2179 | if (expect_false (!once)) |
468 | |
2180 | { |
469 | evw_init (&sin, sin_cb, 55); |
2181 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
470 | evio_set (&sin, 0, EV_READ); |
|
|
471 | evio_start (&sin); |
|
|
472 | |
|
|
473 | struct ev_timer t1; |
|
|
474 | evw_init (&t1, ocb, 1); |
|
|
475 | evtimer_set_rel (&t1, 1, 0); |
|
|
476 | evtimer_start (&t1); |
|
|
477 | |
|
|
478 | struct ev_timer t2; |
|
|
479 | evw_init (&t2, ocb, 2); |
|
|
480 | evtimer_set_abs (&t2, ev_time () + 2, 0); |
|
|
481 | evtimer_start (&t2); |
|
|
482 | |
|
|
483 | ev_loop (0); |
|
|
484 | |
|
|
485 | return 0; |
2182 | return; |
486 | } |
2183 | } |
487 | |
2184 | |
488 | #endif |
2185 | once->cb = cb; |
|
|
2186 | once->arg = arg; |
489 | |
2187 | |
|
|
2188 | ev_init (&once->io, once_cb_io); |
|
|
2189 | if (fd >= 0) |
|
|
2190 | { |
|
|
2191 | ev_io_set (&once->io, fd, events); |
|
|
2192 | ev_io_start (EV_A_ &once->io); |
|
|
2193 | } |
490 | |
2194 | |
|
|
2195 | ev_init (&once->to, once_cb_to); |
|
|
2196 | if (timeout >= 0.) |
|
|
2197 | { |
|
|
2198 | ev_timer_set (&once->to, timeout, 0.); |
|
|
2199 | ev_timer_start (EV_A_ &once->to); |
|
|
2200 | } |
|
|
2201 | } |
491 | |
2202 | |
|
|
2203 | #ifdef __cplusplus |
|
|
2204 | } |
|
|
2205 | #endif |
492 | |
2206 | |