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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> |
3 | #include <unistd.h> |
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4 | #include <fcntl.h> |
111 | #include <fcntl.h> |
5 | #include <signal.h> |
112 | #include <stddef.h> |
6 | |
113 | |
7 | #include <stdio.h> |
114 | #include <stdio.h> |
8 | |
115 | |
9 | #include <assert.h> |
116 | #include <assert.h> |
10 | #include <errno.h> |
117 | #include <errno.h> |
11 | #include <sys/time.h> |
118 | #include <sys/types.h> |
12 | #include <time.h> |
119 | #include <time.h> |
13 | |
120 | |
14 | #define HAVE_EPOLL 1 |
121 | #include <signal.h> |
15 | |
122 | |
16 | #ifndef HAVE_MONOTONIC |
123 | #ifdef EV_H |
17 | # ifdef CLOCK_MONOTONIC |
124 | # include EV_H |
18 | # define HAVE_MONOTONIC 1 |
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 |
19 | # endif |
138 | # endif |
20 | #endif |
139 | #endif |
21 | |
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 | |
22 | #ifndef HAVE_SELECT |
151 | #ifndef EV_USE_SELECT |
23 | # define HAVE_SELECT 1 |
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 |
24 | #endif |
160 | # endif |
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161 | #endif |
25 | |
162 | |
26 | #ifndef HAVE_EPOLL |
163 | #ifndef EV_USE_EPOLL |
27 | # define HAVE_EPOLL 0 |
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 |
28 | #endif |
184 | # endif |
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185 | #endif |
29 | |
186 | |
30 | #ifndef HAVE_REALTIME |
187 | #ifndef EV_INOTIFY_HASHSIZE |
31 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
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 |
32 | #endif |
192 | # endif |
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193 | #endif |
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194 | |
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195 | /**/ |
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196 | |
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197 | #ifndef CLOCK_MONOTONIC |
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198 | # undef EV_USE_MONOTONIC |
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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 | /**/ |
33 | |
220 | |
34 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
221 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
35 | #define MAX_BLOCKTIME 60. |
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 */ |
36 | |
224 | |
37 | #include "ev.h" |
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 |
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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 |
38 | |
241 | |
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242 | #define expect_false(expr) expect ((expr) != 0, 0) |
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243 | #define expect_true(expr) expect ((expr) != 0, 1) |
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244 | |
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245 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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246 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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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 | |
39 | typedef struct ev_watcher *W; |
251 | typedef ev_watcher *W; |
40 | typedef struct ev_watcher_list *WL; |
252 | typedef ev_watcher_list *WL; |
41 | typedef struct ev_watcher_time *WT; |
253 | typedef ev_watcher_time *WT; |
42 | |
254 | |
43 | static ev_tstamp now, diff; /* monotonic clock */ |
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, size_t size) = realloc; |
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287 | |
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288 | void |
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289 | ev_set_allocator (void *(*cb)(void *ptr, size_t 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, size_t size) |
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296 | { |
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297 | ptr = alloc (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.", (long)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 | typedef struct |
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330 | { |
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331 | #if EV_USE_INOTIFY |
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332 | WL head; |
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333 | #endif |
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334 | } ANFS; |
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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 | }; |
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346 | #include "ev_wrap.h" |
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347 | |
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348 | static struct ev_loop default_loop_struct; |
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349 | struct ev_loop *ev_default_loop_ptr; |
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350 | |
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351 | #else |
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352 | |
44 | ev_tstamp ev_now; |
353 | ev_tstamp ev_rt_now; |
45 | 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 |
46 | |
357 | |
47 | static int have_monotonic; /* runtime */ |
358 | static int ev_default_loop_ptr; |
48 | |
359 | |
49 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
360 | #endif |
50 | static void (*method_modify)(int fd, int oev, int nev); |
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51 | static void (*method_poll)(ev_tstamp timeout); |
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52 | |
361 | |
53 | /*****************************************************************************/ |
362 | /*****************************************************************************/ |
54 | |
363 | |
55 | ev_tstamp |
364 | ev_tstamp |
56 | ev_time (void) |
365 | ev_time (void) |
57 | { |
366 | { |
58 | #if HAVE_REALTIME |
367 | #if EV_USE_REALTIME |
59 | struct timespec ts; |
368 | struct timespec ts; |
60 | clock_gettime (CLOCK_REALTIME, &ts); |
369 | clock_gettime (CLOCK_REALTIME, &ts); |
61 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
370 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
62 | #else |
371 | #else |
63 | struct timeval tv; |
372 | struct timeval tv; |
64 | gettimeofday (&tv, 0); |
373 | gettimeofday (&tv, 0); |
65 | return tv.tv_sec + tv.tv_usec * 1e-6; |
374 | return tv.tv_sec + tv.tv_usec * 1e-6; |
66 | #endif |
375 | #endif |
67 | } |
376 | } |
68 | |
377 | |
69 | static ev_tstamp |
378 | ev_tstamp inline_size |
70 | get_clock (void) |
379 | get_clock (void) |
71 | { |
380 | { |
72 | #if HAVE_MONOTONIC |
381 | #if EV_USE_MONOTONIC |
73 | if (have_monotonic) |
382 | if (expect_true (have_monotonic)) |
74 | { |
383 | { |
75 | struct timespec ts; |
384 | struct timespec ts; |
76 | clock_gettime (CLOCK_MONOTONIC, &ts); |
385 | clock_gettime (CLOCK_MONOTONIC, &ts); |
77 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
386 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
78 | } |
387 | } |
79 | #endif |
388 | #endif |
80 | |
389 | |
81 | return ev_time (); |
390 | return ev_time (); |
82 | } |
391 | } |
83 | |
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 | |
84 | #define array_needsize(base,cur,cnt,init) \ |
403 | #define array_needsize(type,base,cur,cnt,init) \ |
85 | if ((cnt) > cur) \ |
404 | if (expect_false ((cnt) > cur)) \ |
86 | { \ |
405 | { \ |
87 | int newcnt = cur ? cur << 1 : 16; \ |
406 | int newcnt = cur; \ |
88 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
407 | do \ |
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408 | { \ |
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409 | newcnt = array_roundsize (type, newcnt << 1); \ |
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410 | } \ |
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411 | while ((cnt) > newcnt); \ |
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412 | \ |
89 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
413 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
90 | init (base + cur, newcnt - cur); \ |
414 | init (base + cur, newcnt - cur); \ |
91 | cur = newcnt; \ |
415 | cur = newcnt; \ |
92 | } |
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; |
93 | |
428 | |
94 | /*****************************************************************************/ |
429 | /*****************************************************************************/ |
95 | |
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); |
|
|
444 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
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; |
|
|
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 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
595 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
596 | if (anfds [fd].events) |
|
|
597 | { |
|
|
598 | anfds [fd].events = 0; |
|
|
599 | fd_change (EV_A_ fd); |
|
|
600 | } |
|
|
601 | } |
|
|
602 | |
|
|
603 | /*****************************************************************************/ |
|
|
604 | |
|
|
605 | void inline_speed |
|
|
606 | upheap (WT *heap, int k) |
|
|
607 | { |
|
|
608 | WT w = heap [k]; |
|
|
609 | |
|
|
610 | while (k && heap [k >> 1]->at > w->at) |
|
|
611 | { |
|
|
612 | heap [k] = heap [k >> 1]; |
|
|
613 | ((W)heap [k])->active = k + 1; |
|
|
614 | k >>= 1; |
|
|
615 | } |
|
|
616 | |
|
|
617 | heap [k] = w; |
|
|
618 | ((W)heap [k])->active = k + 1; |
|
|
619 | |
|
|
620 | } |
|
|
621 | |
|
|
622 | void inline_speed |
|
|
623 | downheap (WT *heap, int N, int k) |
|
|
624 | { |
|
|
625 | WT w = heap [k]; |
|
|
626 | |
|
|
627 | while (k < (N >> 1)) |
|
|
628 | { |
|
|
629 | int j = k << 1; |
|
|
630 | |
|
|
631 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
632 | ++j; |
|
|
633 | |
|
|
634 | if (w->at <= heap [j]->at) |
|
|
635 | break; |
|
|
636 | |
|
|
637 | heap [k] = heap [j]; |
|
|
638 | ((W)heap [k])->active = k + 1; |
|
|
639 | k = j; |
|
|
640 | } |
|
|
641 | |
|
|
642 | heap [k] = w; |
|
|
643 | ((W)heap [k])->active = k + 1; |
|
|
644 | } |
|
|
645 | |
|
|
646 | void inline_size |
|
|
647 | adjustheap (WT *heap, int N, int k) |
|
|
648 | { |
|
|
649 | upheap (heap, k); |
|
|
650 | downheap (heap, N, k); |
|
|
651 | } |
|
|
652 | |
|
|
653 | /*****************************************************************************/ |
|
|
654 | |
96 | typedef struct |
655 | typedef struct |
97 | { |
656 | { |
98 | struct ev_io *head; |
657 | WL head; |
99 | unsigned char wev, rev; /* want, received event set */ |
|
|
100 | } ANFD; |
|
|
101 | |
|
|
102 | static ANFD *anfds; |
|
|
103 | static int anfdmax; |
|
|
104 | |
|
|
105 | static int *fdchanges; |
|
|
106 | static int fdchangemax, fdchangecnt; |
|
|
107 | |
|
|
108 | static void |
|
|
109 | anfds_init (ANFD *base, int count) |
|
|
110 | { |
|
|
111 | while (count--) |
|
|
112 | { |
|
|
113 | base->head = 0; |
|
|
114 | base->wev = base->rev = EV_NONE; |
|
|
115 | ++base; |
|
|
116 | } |
|
|
117 | } |
|
|
118 | |
|
|
119 | typedef struct |
|
|
120 | { |
|
|
121 | W w; |
|
|
122 | int events; |
|
|
123 | } ANPENDING; |
|
|
124 | |
|
|
125 | static ANPENDING *pendings; |
|
|
126 | static int pendingmax, pendingcnt; |
|
|
127 | |
|
|
128 | static void |
|
|
129 | event (W w, int events) |
|
|
130 | { |
|
|
131 | w->pending = ++pendingcnt; |
|
|
132 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
133 | pendings [pendingcnt - 1].w = w; |
|
|
134 | pendings [pendingcnt - 1].events = events; |
|
|
135 | } |
|
|
136 | |
|
|
137 | static void |
|
|
138 | fd_event (int fd, int events) |
|
|
139 | { |
|
|
140 | ANFD *anfd = anfds + fd; |
|
|
141 | struct ev_io *w; |
|
|
142 | |
|
|
143 | for (w = anfd->head; w; w = w->next) |
|
|
144 | { |
|
|
145 | int ev = w->events & events; |
|
|
146 | |
|
|
147 | if (ev) |
|
|
148 | event ((W)w, ev); |
|
|
149 | } |
|
|
150 | } |
|
|
151 | |
|
|
152 | static void |
|
|
153 | queue_events (W *events, int eventcnt, int type) |
|
|
154 | { |
|
|
155 | int i; |
|
|
156 | |
|
|
157 | for (i = 0; i < eventcnt; ++i) |
|
|
158 | event (events [i], type); |
|
|
159 | } |
|
|
160 | |
|
|
161 | /*****************************************************************************/ |
|
|
162 | |
|
|
163 | static struct ev_timer **timers; |
|
|
164 | static int timermax, timercnt; |
|
|
165 | |
|
|
166 | static struct ev_periodic **periodics; |
|
|
167 | static int periodicmax, periodiccnt; |
|
|
168 | |
|
|
169 | static void |
|
|
170 | upheap (WT *timers, int k) |
|
|
171 | { |
|
|
172 | WT w = timers [k]; |
|
|
173 | |
|
|
174 | while (k && timers [k >> 1]->at > w->at) |
|
|
175 | { |
|
|
176 | timers [k] = timers [k >> 1]; |
|
|
177 | timers [k]->active = k + 1; |
|
|
178 | k >>= 1; |
|
|
179 | } |
|
|
180 | |
|
|
181 | timers [k] = w; |
|
|
182 | timers [k]->active = k + 1; |
|
|
183 | |
|
|
184 | } |
|
|
185 | |
|
|
186 | static void |
|
|
187 | downheap (WT *timers, int N, int k) |
|
|
188 | { |
|
|
189 | WT w = timers [k]; |
|
|
190 | |
|
|
191 | while (k < (N >> 1)) |
|
|
192 | { |
|
|
193 | int j = k << 1; |
|
|
194 | |
|
|
195 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
196 | ++j; |
|
|
197 | |
|
|
198 | if (w->at <= timers [j]->at) |
|
|
199 | break; |
|
|
200 | |
|
|
201 | timers [k] = timers [j]; |
|
|
202 | timers [k]->active = k + 1; |
|
|
203 | k = j; |
|
|
204 | } |
|
|
205 | |
|
|
206 | timers [k] = w; |
|
|
207 | timers [k]->active = k + 1; |
|
|
208 | } |
|
|
209 | |
|
|
210 | /*****************************************************************************/ |
|
|
211 | |
|
|
212 | typedef struct |
|
|
213 | { |
|
|
214 | struct ev_signal *head; |
|
|
215 | sig_atomic_t gotsig; |
658 | sig_atomic_t volatile gotsig; |
216 | } ANSIG; |
659 | } ANSIG; |
217 | |
660 | |
218 | static ANSIG *signals; |
661 | static ANSIG *signals; |
219 | static int signalmax; |
662 | static int signalmax; |
220 | |
663 | |
221 | static int sigpipe [2]; |
664 | static int sigpipe [2]; |
222 | static sig_atomic_t gotsig; |
665 | static sig_atomic_t volatile gotsig; |
223 | static struct ev_io sigev; |
666 | static ev_io sigev; |
224 | |
667 | |
225 | static void |
668 | void inline_size |
226 | signals_init (ANSIG *base, int count) |
669 | signals_init (ANSIG *base, int count) |
227 | { |
670 | { |
228 | while (count--) |
671 | while (count--) |
229 | { |
672 | { |
230 | base->head = 0; |
673 | base->head = 0; |
231 | base->gotsig = 0; |
674 | base->gotsig = 0; |
|
|
675 | |
232 | ++base; |
676 | ++base; |
233 | } |
677 | } |
234 | } |
678 | } |
235 | |
679 | |
236 | static void |
680 | static void |
237 | sighandler (int signum) |
681 | sighandler (int signum) |
238 | { |
682 | { |
|
|
683 | #if _WIN32 |
|
|
684 | signal (signum, sighandler); |
|
|
685 | #endif |
|
|
686 | |
239 | signals [signum - 1].gotsig = 1; |
687 | signals [signum - 1].gotsig = 1; |
240 | |
688 | |
241 | if (!gotsig) |
689 | if (!gotsig) |
242 | { |
690 | { |
|
|
691 | int old_errno = errno; |
243 | gotsig = 1; |
692 | gotsig = 1; |
244 | write (sigpipe [1], &gotsig, 1); |
693 | write (sigpipe [1], &signum, 1); |
|
|
694 | errno = old_errno; |
245 | } |
695 | } |
|
|
696 | } |
|
|
697 | |
|
|
698 | void noinline |
|
|
699 | ev_feed_signal_event (EV_P_ int signum) |
|
|
700 | { |
|
|
701 | WL w; |
|
|
702 | |
|
|
703 | #if EV_MULTIPLICITY |
|
|
704 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
705 | #endif |
|
|
706 | |
|
|
707 | --signum; |
|
|
708 | |
|
|
709 | if (signum < 0 || signum >= signalmax) |
|
|
710 | return; |
|
|
711 | |
|
|
712 | signals [signum].gotsig = 0; |
|
|
713 | |
|
|
714 | for (w = signals [signum].head; w; w = w->next) |
|
|
715 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
246 | } |
716 | } |
247 | |
717 | |
248 | static void |
718 | static void |
249 | sigcb (struct ev_io *iow, int revents) |
719 | sigcb (EV_P_ ev_io *iow, int revents) |
250 | { |
720 | { |
251 | struct ev_signal *w; |
|
|
252 | int sig; |
721 | int signum; |
253 | |
722 | |
|
|
723 | read (sigpipe [0], &revents, 1); |
254 | gotsig = 0; |
724 | gotsig = 0; |
255 | read (sigpipe [0], &revents, 1); |
|
|
256 | |
725 | |
257 | for (sig = signalmax; sig--; ) |
726 | for (signum = signalmax; signum--; ) |
258 | if (signals [sig].gotsig) |
727 | if (signals [signum].gotsig) |
|
|
728 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
729 | } |
|
|
730 | |
|
|
731 | void inline_size |
|
|
732 | fd_intern (int fd) |
|
|
733 | { |
|
|
734 | #ifdef _WIN32 |
|
|
735 | int arg = 1; |
|
|
736 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
737 | #else |
|
|
738 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
739 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
740 | #endif |
|
|
741 | } |
|
|
742 | |
|
|
743 | static void noinline |
|
|
744 | siginit (EV_P) |
|
|
745 | { |
|
|
746 | fd_intern (sigpipe [0]); |
|
|
747 | fd_intern (sigpipe [1]); |
|
|
748 | |
|
|
749 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
750 | ev_io_start (EV_A_ &sigev); |
|
|
751 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
752 | } |
|
|
753 | |
|
|
754 | /*****************************************************************************/ |
|
|
755 | |
|
|
756 | static ev_child *childs [EV_PID_HASHSIZE]; |
|
|
757 | |
|
|
758 | #ifndef _WIN32 |
|
|
759 | |
|
|
760 | static ev_signal childev; |
|
|
761 | |
|
|
762 | void inline_speed |
|
|
763 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
764 | { |
|
|
765 | ev_child *w; |
|
|
766 | |
|
|
767 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
768 | if (w->pid == pid || !w->pid) |
259 | { |
769 | { |
260 | signals [sig].gotsig = 0; |
770 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
261 | |
771 | w->rpid = pid; |
262 | for (w = signals [sig].head; w; w = w->next) |
772 | w->rstatus = status; |
263 | event ((W)w, EV_SIGNAL); |
773 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
264 | } |
774 | } |
265 | } |
775 | } |
266 | |
776 | |
|
|
777 | #ifndef WCONTINUED |
|
|
778 | # define WCONTINUED 0 |
|
|
779 | #endif |
|
|
780 | |
267 | static void |
781 | static void |
268 | siginit (void) |
782 | childcb (EV_P_ ev_signal *sw, int revents) |
269 | { |
783 | { |
270 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
784 | int pid, status; |
271 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
272 | |
785 | |
273 | /* rather than sort out wether we really need nb, set it */ |
786 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
274 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
787 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
275 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
788 | if (!WCONTINUED |
|
|
789 | || errno != EINVAL |
|
|
790 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
|
|
791 | return; |
276 | |
792 | |
277 | evio_set (&sigev, sigpipe [0], EV_READ); |
793 | /* make sure we are called again until all childs have been reaped */ |
278 | evio_start (&sigev); |
794 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
795 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
796 | |
|
|
797 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
798 | if (EV_PID_HASHSIZE > 1) |
|
|
799 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
279 | } |
800 | } |
|
|
801 | |
|
|
802 | #endif |
280 | |
803 | |
281 | /*****************************************************************************/ |
804 | /*****************************************************************************/ |
282 | |
805 | |
283 | static struct ev_idle **idles; |
806 | #if EV_USE_PORT |
284 | static int idlemax, idlecnt; |
807 | # include "ev_port.c" |
|
|
808 | #endif |
|
|
809 | #if EV_USE_KQUEUE |
|
|
810 | # include "ev_kqueue.c" |
|
|
811 | #endif |
|
|
812 | #if EV_USE_EPOLL |
|
|
813 | # include "ev_epoll.c" |
|
|
814 | #endif |
|
|
815 | #if EV_USE_POLL |
|
|
816 | # include "ev_poll.c" |
|
|
817 | #endif |
|
|
818 | #if EV_USE_SELECT |
|
|
819 | # include "ev_select.c" |
|
|
820 | #endif |
285 | |
821 | |
286 | static struct ev_check **checks; |
822 | int |
287 | static int checkmax, checkcnt; |
823 | ev_version_major (void) |
|
|
824 | { |
|
|
825 | return EV_VERSION_MAJOR; |
|
|
826 | } |
|
|
827 | |
|
|
828 | int |
|
|
829 | ev_version_minor (void) |
|
|
830 | { |
|
|
831 | return EV_VERSION_MINOR; |
|
|
832 | } |
|
|
833 | |
|
|
834 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
835 | int inline_size |
|
|
836 | enable_secure (void) |
|
|
837 | { |
|
|
838 | #ifdef _WIN32 |
|
|
839 | return 0; |
|
|
840 | #else |
|
|
841 | return getuid () != geteuid () |
|
|
842 | || getgid () != getegid (); |
|
|
843 | #endif |
|
|
844 | } |
|
|
845 | |
|
|
846 | unsigned int |
|
|
847 | ev_supported_backends (void) |
|
|
848 | { |
|
|
849 | unsigned int flags = 0; |
|
|
850 | |
|
|
851 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
852 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
853 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
854 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
855 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
856 | |
|
|
857 | return flags; |
|
|
858 | } |
|
|
859 | |
|
|
860 | unsigned int |
|
|
861 | ev_recommended_backends (void) |
|
|
862 | { |
|
|
863 | unsigned int flags = ev_supported_backends (); |
|
|
864 | |
|
|
865 | #ifndef __NetBSD__ |
|
|
866 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
867 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
868 | flags &= ~EVBACKEND_KQUEUE; |
|
|
869 | #endif |
|
|
870 | #ifdef __APPLE__ |
|
|
871 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
872 | flags &= ~EVBACKEND_POLL; |
|
|
873 | #endif |
|
|
874 | |
|
|
875 | return flags; |
|
|
876 | } |
|
|
877 | |
|
|
878 | unsigned int |
|
|
879 | ev_embeddable_backends (void) |
|
|
880 | { |
|
|
881 | return EVBACKEND_EPOLL |
|
|
882 | | EVBACKEND_KQUEUE |
|
|
883 | | EVBACKEND_PORT; |
|
|
884 | } |
|
|
885 | |
|
|
886 | unsigned int |
|
|
887 | ev_backend (EV_P) |
|
|
888 | { |
|
|
889 | return backend; |
|
|
890 | } |
|
|
891 | |
|
|
892 | static void noinline |
|
|
893 | loop_init (EV_P_ unsigned int flags) |
|
|
894 | { |
|
|
895 | if (!backend) |
|
|
896 | { |
|
|
897 | #if EV_USE_MONOTONIC |
|
|
898 | { |
|
|
899 | struct timespec ts; |
|
|
900 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
901 | have_monotonic = 1; |
|
|
902 | } |
|
|
903 | #endif |
|
|
904 | |
|
|
905 | ev_rt_now = ev_time (); |
|
|
906 | mn_now = get_clock (); |
|
|
907 | now_floor = mn_now; |
|
|
908 | rtmn_diff = ev_rt_now - mn_now; |
|
|
909 | |
|
|
910 | if (!(flags & EVFLAG_NOENV) |
|
|
911 | && !enable_secure () |
|
|
912 | && getenv ("LIBEV_FLAGS")) |
|
|
913 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
914 | |
|
|
915 | if (!(flags & 0x0000ffffUL)) |
|
|
916 | flags |= ev_recommended_backends (); |
|
|
917 | |
|
|
918 | backend = 0; |
|
|
919 | backend_fd = -1; |
|
|
920 | #if EV_USE_INOTIFY |
|
|
921 | fs_fd = -2; |
|
|
922 | #endif |
|
|
923 | |
|
|
924 | #if EV_USE_PORT |
|
|
925 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
926 | #endif |
|
|
927 | #if EV_USE_KQUEUE |
|
|
928 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
929 | #endif |
|
|
930 | #if EV_USE_EPOLL |
|
|
931 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
932 | #endif |
|
|
933 | #if EV_USE_POLL |
|
|
934 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
935 | #endif |
|
|
936 | #if EV_USE_SELECT |
|
|
937 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
938 | #endif |
|
|
939 | |
|
|
940 | ev_init (&sigev, sigcb); |
|
|
941 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
942 | } |
|
|
943 | } |
|
|
944 | |
|
|
945 | static void noinline |
|
|
946 | loop_destroy (EV_P) |
|
|
947 | { |
|
|
948 | int i; |
|
|
949 | |
|
|
950 | #if EV_USE_INOTIFY |
|
|
951 | if (fs_fd >= 0) |
|
|
952 | close (fs_fd); |
|
|
953 | #endif |
|
|
954 | |
|
|
955 | if (backend_fd >= 0) |
|
|
956 | close (backend_fd); |
|
|
957 | |
|
|
958 | #if EV_USE_PORT |
|
|
959 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
960 | #endif |
|
|
961 | #if EV_USE_KQUEUE |
|
|
962 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
963 | #endif |
|
|
964 | #if EV_USE_EPOLL |
|
|
965 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
966 | #endif |
|
|
967 | #if EV_USE_POLL |
|
|
968 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
969 | #endif |
|
|
970 | #if EV_USE_SELECT |
|
|
971 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
972 | #endif |
|
|
973 | |
|
|
974 | for (i = NUMPRI; i--; ) |
|
|
975 | array_free (pending, [i]); |
|
|
976 | |
|
|
977 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
978 | array_free (fdchange, EMPTY0); |
|
|
979 | array_free (timer, EMPTY0); |
|
|
980 | #if EV_PERIODIC_ENABLE |
|
|
981 | array_free (periodic, EMPTY0); |
|
|
982 | #endif |
|
|
983 | array_free (idle, EMPTY0); |
|
|
984 | array_free (prepare, EMPTY0); |
|
|
985 | array_free (check, EMPTY0); |
|
|
986 | |
|
|
987 | backend = 0; |
|
|
988 | } |
|
|
989 | |
|
|
990 | void inline_size |
|
|
991 | loop_fork (EV_P) |
|
|
992 | { |
|
|
993 | #if EV_USE_PORT |
|
|
994 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
995 | #endif |
|
|
996 | #if EV_USE_KQUEUE |
|
|
997 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
998 | #endif |
|
|
999 | #if EV_USE_EPOLL |
|
|
1000 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1001 | #endif |
|
|
1002 | |
|
|
1003 | if (ev_is_active (&sigev)) |
|
|
1004 | { |
|
|
1005 | /* default loop */ |
|
|
1006 | |
|
|
1007 | ev_ref (EV_A); |
|
|
1008 | ev_io_stop (EV_A_ &sigev); |
|
|
1009 | close (sigpipe [0]); |
|
|
1010 | close (sigpipe [1]); |
|
|
1011 | |
|
|
1012 | while (pipe (sigpipe)) |
|
|
1013 | syserr ("(libev) error creating pipe"); |
|
|
1014 | |
|
|
1015 | siginit (EV_A); |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | postfork = 0; |
|
|
1019 | } |
|
|
1020 | |
|
|
1021 | #if EV_MULTIPLICITY |
|
|
1022 | struct ev_loop * |
|
|
1023 | ev_loop_new (unsigned int flags) |
|
|
1024 | { |
|
|
1025 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1026 | |
|
|
1027 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1028 | |
|
|
1029 | loop_init (EV_A_ flags); |
|
|
1030 | |
|
|
1031 | if (ev_backend (EV_A)) |
|
|
1032 | return loop; |
|
|
1033 | |
|
|
1034 | return 0; |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | void |
|
|
1038 | ev_loop_destroy (EV_P) |
|
|
1039 | { |
|
|
1040 | loop_destroy (EV_A); |
|
|
1041 | ev_free (loop); |
|
|
1042 | } |
|
|
1043 | |
|
|
1044 | void |
|
|
1045 | ev_loop_fork (EV_P) |
|
|
1046 | { |
|
|
1047 | postfork = 1; |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | #endif |
|
|
1051 | |
|
|
1052 | #if EV_MULTIPLICITY |
|
|
1053 | struct ev_loop * |
|
|
1054 | ev_default_loop_init (unsigned int flags) |
|
|
1055 | #else |
|
|
1056 | int |
|
|
1057 | ev_default_loop (unsigned int flags) |
|
|
1058 | #endif |
|
|
1059 | { |
|
|
1060 | if (sigpipe [0] == sigpipe [1]) |
|
|
1061 | if (pipe (sigpipe)) |
|
|
1062 | return 0; |
|
|
1063 | |
|
|
1064 | if (!ev_default_loop_ptr) |
|
|
1065 | { |
|
|
1066 | #if EV_MULTIPLICITY |
|
|
1067 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1068 | #else |
|
|
1069 | ev_default_loop_ptr = 1; |
|
|
1070 | #endif |
|
|
1071 | |
|
|
1072 | loop_init (EV_A_ flags); |
|
|
1073 | |
|
|
1074 | if (ev_backend (EV_A)) |
|
|
1075 | { |
|
|
1076 | siginit (EV_A); |
|
|
1077 | |
|
|
1078 | #ifndef _WIN32 |
|
|
1079 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1080 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1081 | ev_signal_start (EV_A_ &childev); |
|
|
1082 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1083 | #endif |
|
|
1084 | } |
|
|
1085 | else |
|
|
1086 | ev_default_loop_ptr = 0; |
|
|
1087 | } |
|
|
1088 | |
|
|
1089 | return ev_default_loop_ptr; |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | void |
|
|
1093 | ev_default_destroy (void) |
|
|
1094 | { |
|
|
1095 | #if EV_MULTIPLICITY |
|
|
1096 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1097 | #endif |
|
|
1098 | |
|
|
1099 | #ifndef _WIN32 |
|
|
1100 | ev_ref (EV_A); /* child watcher */ |
|
|
1101 | ev_signal_stop (EV_A_ &childev); |
|
|
1102 | #endif |
|
|
1103 | |
|
|
1104 | ev_ref (EV_A); /* signal watcher */ |
|
|
1105 | ev_io_stop (EV_A_ &sigev); |
|
|
1106 | |
|
|
1107 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1108 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1109 | |
|
|
1110 | loop_destroy (EV_A); |
|
|
1111 | } |
|
|
1112 | |
|
|
1113 | void |
|
|
1114 | ev_default_fork (void) |
|
|
1115 | { |
|
|
1116 | #if EV_MULTIPLICITY |
|
|
1117 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1118 | #endif |
|
|
1119 | |
|
|
1120 | if (backend) |
|
|
1121 | postfork = 1; |
|
|
1122 | } |
288 | |
1123 | |
289 | /*****************************************************************************/ |
1124 | /*****************************************************************************/ |
290 | |
1125 | |
291 | #if HAVE_EPOLL |
1126 | int inline_size |
292 | # include "ev_epoll.c" |
1127 | any_pending (EV_P) |
293 | #endif |
|
|
294 | #if HAVE_SELECT |
|
|
295 | # include "ev_select.c" |
|
|
296 | #endif |
|
|
297 | |
|
|
298 | int ev_init (int flags) |
|
|
299 | { |
1128 | { |
300 | #if HAVE_MONOTONIC |
1129 | int pri; |
301 | { |
|
|
302 | struct timespec ts; |
|
|
303 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
|
|
304 | have_monotonic = 1; |
|
|
305 | } |
|
|
306 | #endif |
|
|
307 | |
1130 | |
308 | ev_now = ev_time (); |
1131 | for (pri = NUMPRI; pri--; ) |
309 | now = get_clock (); |
1132 | if (pendingcnt [pri]) |
310 | diff = ev_now - now; |
1133 | return 1; |
311 | |
1134 | |
312 | if (pipe (sigpipe)) |
|
|
313 | return 0; |
1135 | return 0; |
314 | |
|
|
315 | ev_method = EVMETHOD_NONE; |
|
|
316 | #if HAVE_EPOLL |
|
|
317 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
318 | #endif |
|
|
319 | #if HAVE_SELECT |
|
|
320 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
321 | #endif |
|
|
322 | |
|
|
323 | if (ev_method) |
|
|
324 | { |
|
|
325 | evw_init (&sigev, sigcb); |
|
|
326 | siginit (); |
|
|
327 | } |
|
|
328 | |
|
|
329 | return ev_method; |
|
|
330 | } |
1136 | } |
331 | |
1137 | |
332 | /*****************************************************************************/ |
1138 | void inline_speed |
333 | |
1139 | call_pending (EV_P) |
334 | void ev_prefork (void) |
|
|
335 | { |
1140 | { |
336 | /* nop */ |
|
|
337 | } |
|
|
338 | |
|
|
339 | void ev_postfork_parent (void) |
|
|
340 | { |
|
|
341 | /* nop */ |
|
|
342 | } |
|
|
343 | |
|
|
344 | void ev_postfork_child (void) |
|
|
345 | { |
|
|
346 | #if HAVE_EPOLL |
|
|
347 | if (ev_method == EVMETHOD_EPOLL) |
|
|
348 | epoll_postfork_child (); |
|
|
349 | #endif |
|
|
350 | |
|
|
351 | evio_stop (&sigev); |
|
|
352 | close (sigpipe [0]); |
|
|
353 | close (sigpipe [1]); |
|
|
354 | pipe (sigpipe); |
|
|
355 | siginit (); |
|
|
356 | } |
|
|
357 | |
|
|
358 | /*****************************************************************************/ |
|
|
359 | |
|
|
360 | static void |
|
|
361 | fd_reify (void) |
|
|
362 | { |
|
|
363 | int i; |
1141 | int pri; |
364 | |
1142 | |
365 | for (i = 0; i < fdchangecnt; ++i) |
1143 | for (pri = NUMPRI; pri--; ) |
|
|
1144 | while (pendingcnt [pri]) |
366 | { |
1145 | { |
367 | int fd = fdchanges [i]; |
1146 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
368 | ANFD *anfd = anfds + fd; |
|
|
369 | struct ev_io *w; |
|
|
370 | |
1147 | |
371 | int wev = 0; |
1148 | if (expect_true (p->w)) |
372 | |
|
|
373 | for (w = anfd->head; w; w = w->next) |
|
|
374 | wev |= w->events; |
|
|
375 | |
|
|
376 | if (anfd->wev != wev) |
|
|
377 | { |
1149 | { |
378 | method_modify (fd, anfd->wev, wev); |
1150 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
379 | anfd->wev = wev; |
|
|
380 | } |
|
|
381 | } |
|
|
382 | |
1151 | |
383 | fdchangecnt = 0; |
|
|
384 | } |
|
|
385 | |
|
|
386 | static void |
|
|
387 | call_pending () |
|
|
388 | { |
|
|
389 | int i; |
|
|
390 | |
|
|
391 | for (i = 0; i < pendingcnt; ++i) |
|
|
392 | { |
|
|
393 | ANPENDING *p = pendings + i; |
|
|
394 | |
|
|
395 | if (p->w) |
|
|
396 | { |
|
|
397 | p->w->pending = 0; |
1152 | p->w->pending = 0; |
398 | p->w->cb (p->w, p->events); |
1153 | EV_CB_INVOKE (p->w, p->events); |
399 | } |
1154 | } |
400 | } |
1155 | } |
401 | |
|
|
402 | pendingcnt = 0; |
|
|
403 | } |
1156 | } |
404 | |
1157 | |
405 | static void |
1158 | void inline_size |
406 | timers_reify () |
1159 | timers_reify (EV_P) |
407 | { |
1160 | { |
408 | while (timercnt && timers [0]->at <= now) |
1161 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
409 | { |
1162 | { |
410 | struct ev_timer *w = timers [0]; |
1163 | ev_timer *w = timers [0]; |
|
|
1164 | |
|
|
1165 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
411 | |
1166 | |
412 | /* first reschedule or stop timer */ |
1167 | /* first reschedule or stop timer */ |
413 | if (w->repeat) |
1168 | if (w->repeat) |
414 | { |
1169 | { |
|
|
1170 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1171 | |
415 | w->at = now + w->repeat; |
1172 | ((WT)w)->at += w->repeat; |
416 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1173 | if (((WT)w)->at < mn_now) |
|
|
1174 | ((WT)w)->at = mn_now; |
|
|
1175 | |
417 | downheap ((WT *)timers, timercnt, 0); |
1176 | downheap ((WT *)timers, timercnt, 0); |
418 | } |
1177 | } |
419 | else |
1178 | else |
420 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1179 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
421 | |
1180 | |
422 | event ((W)w, EV_TIMEOUT); |
1181 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
423 | } |
1182 | } |
424 | } |
1183 | } |
425 | |
1184 | |
426 | static void |
1185 | #if EV_PERIODIC_ENABLE |
|
|
1186 | void inline_size |
427 | periodics_reify () |
1187 | periodics_reify (EV_P) |
428 | { |
1188 | { |
429 | while (periodiccnt && periodics [0]->at <= ev_now) |
1189 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
430 | { |
1190 | { |
431 | struct ev_periodic *w = periodics [0]; |
1191 | ev_periodic *w = periodics [0]; |
|
|
1192 | |
|
|
1193 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
432 | |
1194 | |
433 | /* first reschedule or stop timer */ |
1195 | /* first reschedule or stop timer */ |
434 | if (w->interval) |
1196 | if (w->reschedule_cb) |
435 | { |
1197 | { |
|
|
1198 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1199 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1200 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1201 | } |
|
|
1202 | else if (w->interval) |
|
|
1203 | { |
436 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1204 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
437 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1205 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
438 | downheap ((WT *)periodics, periodiccnt, 0); |
1206 | downheap ((WT *)periodics, periodiccnt, 0); |
439 | } |
1207 | } |
440 | else |
1208 | else |
441 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1209 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
442 | |
1210 | |
443 | event ((W)w, EV_TIMEOUT); |
1211 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
444 | } |
1212 | } |
445 | } |
1213 | } |
446 | |
1214 | |
447 | static void |
1215 | static void noinline |
448 | periodics_reschedule (ev_tstamp diff) |
1216 | periodics_reschedule (EV_P) |
449 | { |
1217 | { |
450 | int i; |
1218 | int i; |
451 | |
1219 | |
452 | /* adjust periodics after time jump */ |
1220 | /* adjust periodics after time jump */ |
453 | for (i = 0; i < periodiccnt; ++i) |
1221 | for (i = 0; i < periodiccnt; ++i) |
454 | { |
1222 | { |
455 | struct ev_periodic *w = periodics [i]; |
1223 | ev_periodic *w = periodics [i]; |
456 | |
1224 | |
|
|
1225 | if (w->reschedule_cb) |
|
|
1226 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
457 | if (w->interval) |
1227 | else if (w->interval) |
|
|
1228 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | /* now rebuild the heap */ |
|
|
1232 | for (i = periodiccnt >> 1; i--; ) |
|
|
1233 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1234 | } |
|
|
1235 | #endif |
|
|
1236 | |
|
|
1237 | int inline_size |
|
|
1238 | time_update_monotonic (EV_P) |
|
|
1239 | { |
|
|
1240 | mn_now = get_clock (); |
|
|
1241 | |
|
|
1242 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1243 | { |
|
|
1244 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1245 | return 0; |
|
|
1246 | } |
|
|
1247 | else |
|
|
1248 | { |
|
|
1249 | now_floor = mn_now; |
|
|
1250 | ev_rt_now = ev_time (); |
|
|
1251 | return 1; |
|
|
1252 | } |
|
|
1253 | } |
|
|
1254 | |
|
|
1255 | void inline_size |
|
|
1256 | time_update (EV_P) |
|
|
1257 | { |
|
|
1258 | int i; |
|
|
1259 | |
|
|
1260 | #if EV_USE_MONOTONIC |
|
|
1261 | if (expect_true (have_monotonic)) |
|
|
1262 | { |
|
|
1263 | if (time_update_monotonic (EV_A)) |
458 | { |
1264 | { |
459 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1265 | ev_tstamp odiff = rtmn_diff; |
460 | |
1266 | |
461 | if (fabs (diff) >= 1e-4) |
1267 | /* loop a few times, before making important decisions. |
|
|
1268 | * on the choice of "4": one iteration isn't enough, |
|
|
1269 | * in case we get preempted during the calls to |
|
|
1270 | * ev_time and get_clock. a second call is almost guarenteed |
|
|
1271 | * to succeed in that case, though. and looping a few more times |
|
|
1272 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1273 | * in the unlikely event of getting preempted here. |
|
|
1274 | */ |
|
|
1275 | for (i = 4; --i; ) |
462 | { |
1276 | { |
463 | evperiodic_stop (w); |
1277 | rtmn_diff = ev_rt_now - mn_now; |
464 | evperiodic_start (w); |
|
|
465 | |
1278 | |
466 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1279 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1280 | return; /* all is well */ |
|
|
1281 | |
|
|
1282 | ev_rt_now = ev_time (); |
|
|
1283 | mn_now = get_clock (); |
|
|
1284 | now_floor = mn_now; |
467 | } |
1285 | } |
|
|
1286 | |
|
|
1287 | # if EV_PERIODIC_ENABLE |
|
|
1288 | periodics_reschedule (EV_A); |
|
|
1289 | # endif |
|
|
1290 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1291 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
468 | } |
1292 | } |
469 | } |
1293 | } |
470 | } |
1294 | else |
471 | |
1295 | #endif |
472 | static void |
1296 | { |
473 | time_update () |
|
|
474 | { |
|
|
475 | int i; |
|
|
476 | |
|
|
477 | ev_now = ev_time (); |
1297 | ev_rt_now = ev_time (); |
478 | |
1298 | |
479 | if (have_monotonic) |
1299 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
480 | { |
|
|
481 | ev_tstamp odiff = diff; |
|
|
482 | |
|
|
483 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
484 | { |
1300 | { |
485 | now = get_clock (); |
1301 | #if EV_PERIODIC_ENABLE |
486 | diff = ev_now - now; |
|
|
487 | |
|
|
488 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
489 | return; /* all is well */ |
|
|
490 | |
|
|
491 | ev_now = ev_time (); |
|
|
492 | } |
|
|
493 | |
|
|
494 | periodics_reschedule (diff - odiff); |
|
|
495 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
496 | } |
|
|
497 | else |
|
|
498 | { |
|
|
499 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
500 | { |
|
|
501 | periodics_reschedule (ev_now - now); |
1302 | periodics_reschedule (EV_A); |
|
|
1303 | #endif |
502 | |
1304 | |
503 | /* adjust timers. this is easy, as the offset is the same for all */ |
1305 | /* adjust timers. this is easy, as the offset is the same for all */ |
504 | for (i = 0; i < timercnt; ++i) |
1306 | for (i = 0; i < timercnt; ++i) |
505 | timers [i]->at += diff; |
1307 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
506 | } |
1308 | } |
507 | |
1309 | |
508 | now = ev_now; |
1310 | mn_now = ev_rt_now; |
509 | } |
|
|
510 | } |
|
|
511 | |
|
|
512 | int ev_loop_done; |
|
|
513 | |
|
|
514 | void ev_loop (int flags) |
|
|
515 | { |
|
|
516 | double block; |
|
|
517 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
|
|
518 | |
|
|
519 | if (checkcnt) |
|
|
520 | { |
1311 | } |
521 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1312 | } |
|
|
1313 | |
|
|
1314 | void |
|
|
1315 | ev_ref (EV_P) |
|
|
1316 | { |
|
|
1317 | ++activecnt; |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | void |
|
|
1321 | ev_unref (EV_P) |
|
|
1322 | { |
|
|
1323 | --activecnt; |
|
|
1324 | } |
|
|
1325 | |
|
|
1326 | static int loop_done; |
|
|
1327 | |
|
|
1328 | void |
|
|
1329 | ev_loop (EV_P_ int flags) |
|
|
1330 | { |
|
|
1331 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
|
|
1332 | ? EVUNLOOP_ONE |
|
|
1333 | : EVUNLOOP_CANCEL; |
|
|
1334 | |
|
|
1335 | while (activecnt) |
|
|
1336 | { |
|
|
1337 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1338 | #if EV_FORK_ENABLE |
|
|
1339 | if (expect_false (postfork)) |
|
|
1340 | if (forkcnt) |
|
|
1341 | { |
|
|
1342 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1343 | call_pending (EV_A); |
|
|
1344 | } |
|
|
1345 | #endif |
|
|
1346 | |
|
|
1347 | /* queue check watchers (and execute them) */ |
|
|
1348 | if (expect_false (preparecnt)) |
|
|
1349 | { |
|
|
1350 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
522 | call_pending (); |
1351 | call_pending (EV_A); |
523 | } |
1352 | } |
524 | |
1353 | |
525 | do |
1354 | /* we might have forked, so reify kernel state if necessary */ |
526 | { |
1355 | if (expect_false (postfork)) |
|
|
1356 | loop_fork (EV_A); |
|
|
1357 | |
527 | /* update fd-related kernel structures */ |
1358 | /* update fd-related kernel structures */ |
528 | fd_reify (); |
1359 | fd_reify (EV_A); |
529 | |
1360 | |
530 | /* calculate blocking time */ |
1361 | /* calculate blocking time */ |
|
|
1362 | { |
|
|
1363 | double block; |
531 | |
1364 | |
532 | /* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */ |
|
|
533 | ev_now = ev_time (); |
|
|
534 | |
|
|
535 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1365 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
536 | block = 0.; |
1366 | block = 0.; /* do not block at all */ |
537 | else |
1367 | else |
538 | { |
1368 | { |
|
|
1369 | /* update time to cancel out callback processing overhead */ |
|
|
1370 | #if EV_USE_MONOTONIC |
|
|
1371 | if (expect_true (have_monotonic)) |
|
|
1372 | time_update_monotonic (EV_A); |
|
|
1373 | else |
|
|
1374 | #endif |
|
|
1375 | { |
|
|
1376 | ev_rt_now = ev_time (); |
|
|
1377 | mn_now = ev_rt_now; |
|
|
1378 | } |
|
|
1379 | |
539 | block = MAX_BLOCKTIME; |
1380 | block = MAX_BLOCKTIME; |
540 | |
1381 | |
541 | if (timercnt) |
1382 | if (timercnt) |
542 | { |
1383 | { |
543 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1384 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
544 | if (block > to) block = to; |
1385 | if (block > to) block = to; |
545 | } |
1386 | } |
546 | |
1387 | |
|
|
1388 | #if EV_PERIODIC_ENABLE |
547 | if (periodiccnt) |
1389 | if (periodiccnt) |
548 | { |
1390 | { |
549 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1391 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
550 | if (block > to) block = to; |
1392 | if (block > to) block = to; |
551 | } |
1393 | } |
|
|
1394 | #endif |
552 | |
1395 | |
553 | if (block < 0.) block = 0.; |
1396 | if (expect_false (block < 0.)) block = 0.; |
554 | } |
1397 | } |
555 | |
1398 | |
556 | method_poll (block); |
1399 | backend_poll (EV_A_ block); |
|
|
1400 | } |
557 | |
1401 | |
558 | /* update ev_now, do magic */ |
1402 | /* update ev_rt_now, do magic */ |
559 | time_update (); |
1403 | time_update (EV_A); |
560 | |
1404 | |
561 | /* queue pending timers and reschedule them */ |
1405 | /* queue pending timers and reschedule them */ |
|
|
1406 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1407 | #if EV_PERIODIC_ENABLE |
562 | periodics_reify (); /* absolute timers first */ |
1408 | periodics_reify (EV_A); /* absolute timers called first */ |
563 | timers_reify (); /* relative timers second */ |
1409 | #endif |
564 | |
1410 | |
565 | /* queue idle watchers unless io or timers are pending */ |
1411 | /* queue idle watchers unless other events are pending */ |
566 | if (!pendingcnt) |
1412 | if (idlecnt && !any_pending (EV_A)) |
567 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1413 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
568 | |
1414 | |
569 | /* queue check and possibly idle watchers */ |
1415 | /* queue check watchers, to be executed first */ |
|
|
1416 | if (expect_false (checkcnt)) |
570 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1417 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
571 | |
1418 | |
572 | call_pending (); |
1419 | call_pending (EV_A); |
573 | } |
|
|
574 | while (!ev_loop_done); |
|
|
575 | |
1420 | |
576 | if (ev_loop_done != 2) |
1421 | if (expect_false (loop_done)) |
|
|
1422 | break; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | if (loop_done == EVUNLOOP_ONE) |
|
|
1426 | loop_done = EVUNLOOP_CANCEL; |
|
|
1427 | } |
|
|
1428 | |
|
|
1429 | void |
|
|
1430 | ev_unloop (EV_P_ int how) |
|
|
1431 | { |
577 | ev_loop_done = 0; |
1432 | loop_done = how; |
578 | } |
1433 | } |
579 | |
1434 | |
580 | /*****************************************************************************/ |
1435 | /*****************************************************************************/ |
581 | |
1436 | |
582 | static void |
1437 | void inline_size |
583 | wlist_add (WL *head, WL elem) |
1438 | wlist_add (WL *head, WL elem) |
584 | { |
1439 | { |
585 | elem->next = *head; |
1440 | elem->next = *head; |
586 | *head = elem; |
1441 | *head = elem; |
587 | } |
1442 | } |
588 | |
1443 | |
589 | static void |
1444 | void inline_size |
590 | wlist_del (WL *head, WL elem) |
1445 | wlist_del (WL *head, WL elem) |
591 | { |
1446 | { |
592 | while (*head) |
1447 | while (*head) |
593 | { |
1448 | { |
594 | if (*head == elem) |
1449 | if (*head == elem) |
… | |
… | |
599 | |
1454 | |
600 | head = &(*head)->next; |
1455 | head = &(*head)->next; |
601 | } |
1456 | } |
602 | } |
1457 | } |
603 | |
1458 | |
604 | static void |
1459 | void inline_speed |
|
|
1460 | ev_clear_pending (EV_P_ W w) |
|
|
1461 | { |
|
|
1462 | if (w->pending) |
|
|
1463 | { |
|
|
1464 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
|
|
1465 | w->pending = 0; |
|
|
1466 | } |
|
|
1467 | } |
|
|
1468 | |
|
|
1469 | void inline_speed |
605 | ev_start (W w, int active) |
1470 | ev_start (EV_P_ W w, int active) |
606 | { |
1471 | { |
607 | w->pending = 0; |
1472 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1473 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1474 | |
608 | w->active = active; |
1475 | w->active = active; |
|
|
1476 | ev_ref (EV_A); |
609 | } |
1477 | } |
610 | |
1478 | |
611 | static void |
1479 | void inline_size |
612 | ev_stop (W w) |
1480 | ev_stop (EV_P_ W w) |
613 | { |
1481 | { |
614 | if (w->pending) |
1482 | ev_unref (EV_A); |
615 | pendings [w->pending - 1].w = 0; |
|
|
616 | |
|
|
617 | w->active = 0; |
1483 | w->active = 0; |
618 | } |
1484 | } |
619 | |
1485 | |
620 | /*****************************************************************************/ |
1486 | /*****************************************************************************/ |
621 | |
1487 | |
622 | void |
1488 | void |
623 | evio_start (struct ev_io *w) |
1489 | ev_io_start (EV_P_ ev_io *w) |
624 | { |
1490 | { |
625 | if (ev_is_active (w)) |
|
|
626 | return; |
|
|
627 | |
|
|
628 | int fd = w->fd; |
1491 | int fd = w->fd; |
629 | |
1492 | |
|
|
1493 | if (expect_false (ev_is_active (w))) |
|
|
1494 | return; |
|
|
1495 | |
|
|
1496 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1497 | |
630 | ev_start ((W)w, 1); |
1498 | ev_start (EV_A_ (W)w, 1); |
631 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1499 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
632 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1500 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
633 | |
1501 | |
634 | ++fdchangecnt; |
1502 | fd_change (EV_A_ fd); |
635 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
636 | fdchanges [fdchangecnt - 1] = fd; |
|
|
637 | } |
1503 | } |
638 | |
1504 | |
639 | void |
1505 | void |
640 | evio_stop (struct ev_io *w) |
1506 | ev_io_stop (EV_P_ ev_io *w) |
641 | { |
1507 | { |
|
|
1508 | ev_clear_pending (EV_A_ (W)w); |
642 | if (!ev_is_active (w)) |
1509 | if (expect_false (!ev_is_active (w))) |
643 | return; |
1510 | return; |
|
|
1511 | |
|
|
1512 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
644 | |
1513 | |
645 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1514 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
646 | ev_stop ((W)w); |
1515 | ev_stop (EV_A_ (W)w); |
647 | |
1516 | |
648 | ++fdchangecnt; |
1517 | fd_change (EV_A_ w->fd); |
649 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
650 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
651 | } |
1518 | } |
652 | |
1519 | |
653 | |
|
|
654 | void |
1520 | void |
655 | evtimer_start (struct ev_timer *w) |
1521 | ev_timer_start (EV_P_ ev_timer *w) |
656 | { |
1522 | { |
657 | if (ev_is_active (w)) |
1523 | if (expect_false (ev_is_active (w))) |
658 | return; |
1524 | return; |
659 | |
1525 | |
660 | w->at += now; |
1526 | ((WT)w)->at += mn_now; |
661 | |
1527 | |
662 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1528 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
663 | |
1529 | |
664 | ev_start ((W)w, ++timercnt); |
1530 | ev_start (EV_A_ (W)w, ++timercnt); |
665 | array_needsize (timers, timermax, timercnt, ); |
1531 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
666 | timers [timercnt - 1] = w; |
1532 | timers [timercnt - 1] = w; |
667 | upheap ((WT *)timers, timercnt - 1); |
1533 | upheap ((WT *)timers, timercnt - 1); |
668 | } |
|
|
669 | |
1534 | |
|
|
1535 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
|
|
1536 | } |
|
|
1537 | |
670 | void |
1538 | void |
671 | evtimer_stop (struct ev_timer *w) |
1539 | ev_timer_stop (EV_P_ ev_timer *w) |
672 | { |
1540 | { |
|
|
1541 | ev_clear_pending (EV_A_ (W)w); |
673 | if (!ev_is_active (w)) |
1542 | if (expect_false (!ev_is_active (w))) |
674 | return; |
1543 | return; |
675 | |
1544 | |
676 | if (w->active < timercnt--) |
1545 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1546 | |
|
|
1547 | { |
|
|
1548 | int active = ((W)w)->active; |
|
|
1549 | |
|
|
1550 | if (expect_true (--active < --timercnt)) |
677 | { |
1551 | { |
678 | timers [w->active - 1] = timers [timercnt]; |
1552 | timers [active] = timers [timercnt]; |
679 | downheap ((WT *)timers, timercnt, w->active - 1); |
1553 | adjustheap ((WT *)timers, timercnt, active); |
680 | } |
1554 | } |
|
|
1555 | } |
681 | |
1556 | |
682 | w->at = w->repeat; |
1557 | ((WT)w)->at -= mn_now; |
683 | |
1558 | |
684 | ev_stop ((W)w); |
1559 | ev_stop (EV_A_ (W)w); |
685 | } |
1560 | } |
686 | |
1561 | |
687 | void |
1562 | void |
688 | evtimer_again (struct ev_timer *w) |
1563 | ev_timer_again (EV_P_ ev_timer *w) |
689 | { |
1564 | { |
690 | if (ev_is_active (w)) |
1565 | if (ev_is_active (w)) |
691 | { |
1566 | { |
692 | if (w->repeat) |
1567 | if (w->repeat) |
693 | { |
1568 | { |
694 | w->at = now + w->repeat; |
1569 | ((WT)w)->at = mn_now + w->repeat; |
695 | downheap ((WT *)timers, timercnt, w->active - 1); |
1570 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
696 | } |
1571 | } |
697 | else |
1572 | else |
698 | evtimer_stop (w); |
1573 | ev_timer_stop (EV_A_ w); |
699 | } |
1574 | } |
700 | else if (w->repeat) |
1575 | else if (w->repeat) |
|
|
1576 | { |
|
|
1577 | w->at = w->repeat; |
701 | evtimer_start (w); |
1578 | ev_timer_start (EV_A_ w); |
|
|
1579 | } |
702 | } |
1580 | } |
703 | |
1581 | |
|
|
1582 | #if EV_PERIODIC_ENABLE |
704 | void |
1583 | void |
705 | evperiodic_start (struct ev_periodic *w) |
1584 | ev_periodic_start (EV_P_ ev_periodic *w) |
706 | { |
1585 | { |
707 | if (ev_is_active (w)) |
1586 | if (expect_false (ev_is_active (w))) |
708 | return; |
1587 | return; |
709 | |
1588 | |
710 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1589 | if (w->reschedule_cb) |
711 | |
1590 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1591 | else if (w->interval) |
|
|
1592 | { |
|
|
1593 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
712 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1594 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
713 | if (w->interval) |
|
|
714 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1595 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1596 | } |
715 | |
1597 | |
716 | ev_start ((W)w, ++periodiccnt); |
1598 | ev_start (EV_A_ (W)w, ++periodiccnt); |
717 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1599 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
718 | periodics [periodiccnt - 1] = w; |
1600 | periodics [periodiccnt - 1] = w; |
719 | upheap ((WT *)periodics, periodiccnt - 1); |
1601 | upheap ((WT *)periodics, periodiccnt - 1); |
720 | } |
|
|
721 | |
1602 | |
|
|
1603 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
|
|
1604 | } |
|
|
1605 | |
722 | void |
1606 | void |
723 | evperiodic_stop (struct ev_periodic *w) |
1607 | ev_periodic_stop (EV_P_ ev_periodic *w) |
724 | { |
1608 | { |
|
|
1609 | ev_clear_pending (EV_A_ (W)w); |
725 | if (!ev_is_active (w)) |
1610 | if (expect_false (!ev_is_active (w))) |
726 | return; |
1611 | return; |
727 | |
1612 | |
728 | if (w->active < periodiccnt--) |
1613 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1614 | |
|
|
1615 | { |
|
|
1616 | int active = ((W)w)->active; |
|
|
1617 | |
|
|
1618 | if (expect_true (--active < --periodiccnt)) |
729 | { |
1619 | { |
730 | periodics [w->active - 1] = periodics [periodiccnt]; |
1620 | periodics [active] = periodics [periodiccnt]; |
731 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1621 | adjustheap ((WT *)periodics, periodiccnt, active); |
732 | } |
1622 | } |
|
|
1623 | } |
733 | |
1624 | |
734 | ev_stop ((W)w); |
1625 | ev_stop (EV_A_ (W)w); |
735 | } |
1626 | } |
736 | |
1627 | |
737 | void |
1628 | void |
|
|
1629 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1630 | { |
|
|
1631 | /* TODO: use adjustheap and recalculation */ |
|
|
1632 | ev_periodic_stop (EV_A_ w); |
|
|
1633 | ev_periodic_start (EV_A_ w); |
|
|
1634 | } |
|
|
1635 | #endif |
|
|
1636 | |
|
|
1637 | #ifndef SA_RESTART |
|
|
1638 | # define SA_RESTART 0 |
|
|
1639 | #endif |
|
|
1640 | |
|
|
1641 | void |
738 | evsignal_start (struct ev_signal *w) |
1642 | ev_signal_start (EV_P_ ev_signal *w) |
739 | { |
1643 | { |
|
|
1644 | #if EV_MULTIPLICITY |
|
|
1645 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1646 | #endif |
740 | if (ev_is_active (w)) |
1647 | if (expect_false (ev_is_active (w))) |
741 | return; |
1648 | return; |
742 | |
1649 | |
|
|
1650 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1651 | |
743 | ev_start ((W)w, 1); |
1652 | ev_start (EV_A_ (W)w, 1); |
744 | array_needsize (signals, signalmax, w->signum, signals_init); |
1653 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
745 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1654 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
746 | |
1655 | |
747 | if (!w->next) |
1656 | if (!((WL)w)->next) |
748 | { |
1657 | { |
|
|
1658 | #if _WIN32 |
|
|
1659 | signal (w->signum, sighandler); |
|
|
1660 | #else |
749 | struct sigaction sa; |
1661 | struct sigaction sa; |
750 | sa.sa_handler = sighandler; |
1662 | sa.sa_handler = sighandler; |
751 | sigfillset (&sa.sa_mask); |
1663 | sigfillset (&sa.sa_mask); |
752 | sa.sa_flags = 0; |
1664 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
753 | sigaction (w->signum, &sa, 0); |
1665 | sigaction (w->signum, &sa, 0); |
|
|
1666 | #endif |
754 | } |
1667 | } |
755 | } |
1668 | } |
756 | |
1669 | |
757 | void |
1670 | void |
758 | evsignal_stop (struct ev_signal *w) |
1671 | ev_signal_stop (EV_P_ ev_signal *w) |
759 | { |
1672 | { |
|
|
1673 | ev_clear_pending (EV_A_ (W)w); |
760 | if (!ev_is_active (w)) |
1674 | if (expect_false (!ev_is_active (w))) |
761 | return; |
1675 | return; |
762 | |
1676 | |
763 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1677 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
764 | ev_stop ((W)w); |
1678 | ev_stop (EV_A_ (W)w); |
765 | |
1679 | |
766 | if (!signals [w->signum - 1].head) |
1680 | if (!signals [w->signum - 1].head) |
767 | signal (w->signum, SIG_DFL); |
1681 | signal (w->signum, SIG_DFL); |
768 | } |
1682 | } |
769 | |
1683 | |
770 | void evidle_start (struct ev_idle *w) |
1684 | void |
|
|
1685 | ev_child_start (EV_P_ ev_child *w) |
771 | { |
1686 | { |
|
|
1687 | #if EV_MULTIPLICITY |
|
|
1688 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1689 | #endif |
772 | if (ev_is_active (w)) |
1690 | if (expect_false (ev_is_active (w))) |
773 | return; |
1691 | return; |
774 | |
1692 | |
|
|
1693 | ev_start (EV_A_ (W)w, 1); |
|
|
1694 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
1695 | } |
|
|
1696 | |
|
|
1697 | void |
|
|
1698 | ev_child_stop (EV_P_ ev_child *w) |
|
|
1699 | { |
|
|
1700 | ev_clear_pending (EV_A_ (W)w); |
|
|
1701 | if (expect_false (!ev_is_active (w))) |
|
|
1702 | return; |
|
|
1703 | |
|
|
1704 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
|
|
1705 | ev_stop (EV_A_ (W)w); |
|
|
1706 | } |
|
|
1707 | |
|
|
1708 | #if EV_STAT_ENABLE |
|
|
1709 | |
|
|
1710 | # ifdef _WIN32 |
|
|
1711 | # undef lstat |
|
|
1712 | # define lstat(a,b) _stati64 (a,b) |
|
|
1713 | # endif |
|
|
1714 | |
|
|
1715 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
1716 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
1717 | |
|
|
1718 | void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
1719 | |
|
|
1720 | #if EV_USE_INOTIFY |
|
|
1721 | # define EV_INOTIFY_BUFSIZE ((PATH_MAX + sizeof (struct inotify_event)) + 2048) |
|
|
1722 | |
|
|
1723 | static void noinline |
|
|
1724 | infy_add (EV_P_ ev_stat *w) |
|
|
1725 | { |
|
|
1726 | 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); |
|
|
1727 | |
|
|
1728 | if (w->wd < 0) |
|
|
1729 | { |
|
|
1730 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
1731 | |
|
|
1732 | /* monitor some parent directory for speedup hints */ |
|
|
1733 | if (errno == ENOENT || errno == EACCES) |
|
|
1734 | { |
|
|
1735 | char path [PATH_MAX]; |
|
|
1736 | strcpy (path, w->path); |
|
|
1737 | |
|
|
1738 | do |
|
|
1739 | { |
|
|
1740 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
1741 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
1742 | |
|
|
1743 | char *pend = strrchr (path, '/'); |
|
|
1744 | |
|
|
1745 | if (!pend) |
|
|
1746 | break; /* whoops, no '/', complain to your admin */ |
|
|
1747 | |
|
|
1748 | *pend = 0; |
|
|
1749 | w->wd = inotify_add_watch (fs_fd, path, IN_DELETE_SELF | IN_CREATE | IN_MOVED_TO | IN_MASK_ADD); |
|
|
1750 | } |
|
|
1751 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
1752 | } |
|
|
1753 | } |
|
|
1754 | else |
|
|
1755 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
1756 | |
|
|
1757 | if (w->wd >= 0) |
|
|
1758 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
1759 | } |
|
|
1760 | |
|
|
1761 | static void noinline |
|
|
1762 | infy_del (EV_P_ ev_stat *w) |
|
|
1763 | { |
|
|
1764 | WL w_; |
|
|
1765 | int slot; |
|
|
1766 | int wd = w->wd; |
|
|
1767 | |
|
|
1768 | if (wd < 0) |
|
|
1769 | return; |
|
|
1770 | |
|
|
1771 | w->wd = -2; |
|
|
1772 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
1773 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
1774 | |
|
|
1775 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
1776 | inotify_rm_watch (fs_fd, wd); |
|
|
1777 | } |
|
|
1778 | |
|
|
1779 | static void noinline |
|
|
1780 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
1781 | { |
|
|
1782 | if (slot < 0) |
|
|
1783 | /* overflow, need to check for all hahs slots */ |
|
|
1784 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1785 | infy_wd (EV_A_ slot, wd, ev); |
|
|
1786 | else |
|
|
1787 | { |
|
|
1788 | WL w_; |
|
|
1789 | |
|
|
1790 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
1791 | { |
|
|
1792 | ev_stat *w = (ev_stat *)w_; |
|
|
1793 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
1794 | |
|
|
1795 | if (w->wd == wd || wd == -1) |
|
|
1796 | { |
|
|
1797 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
1798 | { |
|
|
1799 | w->wd = -1; |
|
|
1800 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1801 | } |
|
|
1802 | |
|
|
1803 | stat_timer_cb (EV_P_ &w->timer, 0); |
|
|
1804 | } |
|
|
1805 | } |
|
|
1806 | } |
|
|
1807 | } |
|
|
1808 | |
|
|
1809 | static void |
|
|
1810 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
1811 | { |
|
|
1812 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
1813 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
1814 | int ofs; |
|
|
1815 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
1816 | |
|
|
1817 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
1818 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
1819 | } |
|
|
1820 | |
|
|
1821 | void inline_size |
|
|
1822 | infy_init (EV_P) |
|
|
1823 | { |
|
|
1824 | if (fs_fd != -2) |
|
|
1825 | return; |
|
|
1826 | |
|
|
1827 | fs_fd = inotify_init (); |
|
|
1828 | |
|
|
1829 | if (fs_fd >= 0) |
|
|
1830 | { |
|
|
1831 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
1832 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
1833 | ev_io_start (EV_A_ &fs_w); |
|
|
1834 | } |
|
|
1835 | } |
|
|
1836 | |
|
|
1837 | #endif |
|
|
1838 | |
|
|
1839 | void |
|
|
1840 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
1841 | { |
|
|
1842 | if (lstat (w->path, &w->attr) < 0) |
|
|
1843 | w->attr.st_nlink = 0; |
|
|
1844 | else if (!w->attr.st_nlink) |
|
|
1845 | w->attr.st_nlink = 1; |
|
|
1846 | } |
|
|
1847 | |
|
|
1848 | void noinline |
|
|
1849 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
1850 | { |
|
|
1851 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
1852 | |
|
|
1853 | /* we copy this here each the time so that */ |
|
|
1854 | /* prev has the old value when the callback gets invoked */ |
|
|
1855 | w->prev = w->attr; |
|
|
1856 | ev_stat_stat (EV_A_ w); |
|
|
1857 | |
|
|
1858 | if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) |
|
|
1859 | { |
|
|
1860 | #if EV_USE_INOTIFY |
|
|
1861 | infy_del (EV_A_ w); |
|
|
1862 | infy_add (EV_A_ w); |
|
|
1863 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
1864 | #endif |
|
|
1865 | |
|
|
1866 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
1867 | } |
|
|
1868 | } |
|
|
1869 | |
|
|
1870 | void |
|
|
1871 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
1872 | { |
|
|
1873 | if (expect_false (ev_is_active (w))) |
|
|
1874 | return; |
|
|
1875 | |
|
|
1876 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
1877 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
1878 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
1879 | |
|
|
1880 | ev_stat_stat (EV_A_ w); |
|
|
1881 | |
|
|
1882 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
1883 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
1884 | |
|
|
1885 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
1886 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
1887 | |
|
|
1888 | #if EV_USE_INOTIFY |
|
|
1889 | infy_init (EV_A); |
|
|
1890 | |
|
|
1891 | if (fs_fd >= 0) |
|
|
1892 | infy_add (EV_A_ w); |
|
|
1893 | else |
|
|
1894 | #endif |
|
|
1895 | ev_timer_start (EV_A_ &w->timer); |
|
|
1896 | |
|
|
1897 | ev_start (EV_A_ (W)w, 1); |
|
|
1898 | } |
|
|
1899 | |
|
|
1900 | void |
|
|
1901 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
1902 | { |
|
|
1903 | ev_clear_pending (EV_A_ (W)w); |
|
|
1904 | if (expect_false (!ev_is_active (w))) |
|
|
1905 | return; |
|
|
1906 | |
|
|
1907 | #if EV_USE_INOTIFY |
|
|
1908 | infy_del (EV_A_ w); |
|
|
1909 | #endif |
|
|
1910 | ev_timer_stop (EV_A_ &w->timer); |
|
|
1911 | |
|
|
1912 | ev_stop (EV_A_ (W)w); |
|
|
1913 | } |
|
|
1914 | #endif |
|
|
1915 | |
|
|
1916 | void |
|
|
1917 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
1918 | { |
|
|
1919 | if (expect_false (ev_is_active (w))) |
|
|
1920 | return; |
|
|
1921 | |
775 | ev_start ((W)w, ++idlecnt); |
1922 | ev_start (EV_A_ (W)w, ++idlecnt); |
776 | array_needsize (idles, idlemax, idlecnt, ); |
1923 | array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
777 | idles [idlecnt - 1] = w; |
1924 | idles [idlecnt - 1] = w; |
778 | } |
1925 | } |
779 | |
1926 | |
780 | void evidle_stop (struct ev_idle *w) |
1927 | void |
|
|
1928 | ev_idle_stop (EV_P_ ev_idle *w) |
781 | { |
1929 | { |
|
|
1930 | ev_clear_pending (EV_A_ (W)w); |
|
|
1931 | if (expect_false (!ev_is_active (w))) |
|
|
1932 | return; |
|
|
1933 | |
|
|
1934 | { |
|
|
1935 | int active = ((W)w)->active; |
782 | idles [w->active - 1] = idles [--idlecnt]; |
1936 | idles [active - 1] = idles [--idlecnt]; |
|
|
1937 | ((W)idles [active - 1])->active = active; |
|
|
1938 | } |
|
|
1939 | |
783 | ev_stop ((W)w); |
1940 | ev_stop (EV_A_ (W)w); |
784 | } |
1941 | } |
785 | |
1942 | |
|
|
1943 | void |
|
|
1944 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
1945 | { |
|
|
1946 | if (expect_false (ev_is_active (w))) |
|
|
1947 | return; |
|
|
1948 | |
|
|
1949 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1950 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1951 | prepares [preparecnt - 1] = w; |
|
|
1952 | } |
|
|
1953 | |
|
|
1954 | void |
|
|
1955 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
1956 | { |
|
|
1957 | ev_clear_pending (EV_A_ (W)w); |
|
|
1958 | if (expect_false (!ev_is_active (w))) |
|
|
1959 | return; |
|
|
1960 | |
|
|
1961 | { |
|
|
1962 | int active = ((W)w)->active; |
|
|
1963 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
1964 | ((W)prepares [active - 1])->active = active; |
|
|
1965 | } |
|
|
1966 | |
|
|
1967 | ev_stop (EV_A_ (W)w); |
|
|
1968 | } |
|
|
1969 | |
|
|
1970 | void |
786 | void evcheck_start (struct ev_check *w) |
1971 | ev_check_start (EV_P_ ev_check *w) |
787 | { |
1972 | { |
788 | if (ev_is_active (w)) |
1973 | if (expect_false (ev_is_active (w))) |
789 | return; |
1974 | return; |
790 | |
1975 | |
791 | ev_start ((W)w, ++checkcnt); |
1976 | ev_start (EV_A_ (W)w, ++checkcnt); |
792 | array_needsize (checks, checkmax, checkcnt, ); |
1977 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
793 | checks [checkcnt - 1] = w; |
1978 | checks [checkcnt - 1] = w; |
794 | } |
1979 | } |
795 | |
1980 | |
|
|
1981 | void |
796 | void evcheck_stop (struct ev_check *w) |
1982 | ev_check_stop (EV_P_ ev_check *w) |
797 | { |
1983 | { |
|
|
1984 | ev_clear_pending (EV_A_ (W)w); |
|
|
1985 | if (expect_false (!ev_is_active (w))) |
|
|
1986 | return; |
|
|
1987 | |
|
|
1988 | { |
|
|
1989 | int active = ((W)w)->active; |
798 | checks [w->active - 1] = checks [--checkcnt]; |
1990 | checks [active - 1] = checks [--checkcnt]; |
|
|
1991 | ((W)checks [active - 1])->active = active; |
|
|
1992 | } |
|
|
1993 | |
799 | ev_stop ((W)w); |
1994 | ev_stop (EV_A_ (W)w); |
800 | } |
1995 | } |
|
|
1996 | |
|
|
1997 | #if EV_EMBED_ENABLE |
|
|
1998 | void noinline |
|
|
1999 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
2000 | { |
|
|
2001 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
|
|
2002 | } |
|
|
2003 | |
|
|
2004 | static void |
|
|
2005 | embed_cb (EV_P_ ev_io *io, int revents) |
|
|
2006 | { |
|
|
2007 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2008 | |
|
|
2009 | if (ev_cb (w)) |
|
|
2010 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2011 | else |
|
|
2012 | ev_embed_sweep (loop, w); |
|
|
2013 | } |
|
|
2014 | |
|
|
2015 | void |
|
|
2016 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2017 | { |
|
|
2018 | if (expect_false (ev_is_active (w))) |
|
|
2019 | return; |
|
|
2020 | |
|
|
2021 | { |
|
|
2022 | struct ev_loop *loop = w->loop; |
|
|
2023 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2024 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
2025 | } |
|
|
2026 | |
|
|
2027 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2028 | ev_io_start (EV_A_ &w->io); |
|
|
2029 | |
|
|
2030 | ev_start (EV_A_ (W)w, 1); |
|
|
2031 | } |
|
|
2032 | |
|
|
2033 | void |
|
|
2034 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
2035 | { |
|
|
2036 | ev_clear_pending (EV_A_ (W)w); |
|
|
2037 | if (expect_false (!ev_is_active (w))) |
|
|
2038 | return; |
|
|
2039 | |
|
|
2040 | ev_io_stop (EV_A_ &w->io); |
|
|
2041 | |
|
|
2042 | ev_stop (EV_A_ (W)w); |
|
|
2043 | } |
|
|
2044 | #endif |
|
|
2045 | |
|
|
2046 | #if EV_FORK_ENABLE |
|
|
2047 | void |
|
|
2048 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2049 | { |
|
|
2050 | if (expect_false (ev_is_active (w))) |
|
|
2051 | return; |
|
|
2052 | |
|
|
2053 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2054 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2055 | forks [forkcnt - 1] = w; |
|
|
2056 | } |
|
|
2057 | |
|
|
2058 | void |
|
|
2059 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2060 | { |
|
|
2061 | ev_clear_pending (EV_A_ (W)w); |
|
|
2062 | if (expect_false (!ev_is_active (w))) |
|
|
2063 | return; |
|
|
2064 | |
|
|
2065 | { |
|
|
2066 | int active = ((W)w)->active; |
|
|
2067 | forks [active - 1] = forks [--forkcnt]; |
|
|
2068 | ((W)forks [active - 1])->active = active; |
|
|
2069 | } |
|
|
2070 | |
|
|
2071 | ev_stop (EV_A_ (W)w); |
|
|
2072 | } |
|
|
2073 | #endif |
801 | |
2074 | |
802 | /*****************************************************************************/ |
2075 | /*****************************************************************************/ |
803 | |
2076 | |
804 | #if 0 |
2077 | struct ev_once |
805 | |
2078 | { |
806 | struct ev_io wio; |
2079 | ev_io io; |
|
|
2080 | ev_timer to; |
|
|
2081 | void (*cb)(int revents, void *arg); |
|
|
2082 | void *arg; |
|
|
2083 | }; |
807 | |
2084 | |
808 | static void |
2085 | static void |
809 | sin_cb (struct ev_io *w, int revents) |
2086 | once_cb (EV_P_ struct ev_once *once, int revents) |
810 | { |
2087 | { |
811 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
2088 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
2089 | void *arg = once->arg; |
|
|
2090 | |
|
|
2091 | ev_io_stop (EV_A_ &once->io); |
|
|
2092 | ev_timer_stop (EV_A_ &once->to); |
|
|
2093 | ev_free (once); |
|
|
2094 | |
|
|
2095 | cb (revents, arg); |
812 | } |
2096 | } |
813 | |
2097 | |
814 | static void |
2098 | static void |
815 | ocb (struct ev_timer *w, int revents) |
2099 | once_cb_io (EV_P_ ev_io *w, int revents) |
816 | { |
2100 | { |
817 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
2101 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
818 | evtimer_stop (w); |
|
|
819 | evtimer_start (w); |
|
|
820 | } |
2102 | } |
821 | |
2103 | |
822 | static void |
2104 | static void |
823 | scb (struct ev_signal *w, int revents) |
2105 | once_cb_to (EV_P_ ev_timer *w, int revents) |
824 | { |
2106 | { |
825 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
2107 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
826 | evio_stop (&wio); |
|
|
827 | evio_start (&wio); |
|
|
828 | } |
2108 | } |
829 | |
2109 | |
830 | static void |
2110 | void |
831 | gcb (struct ev_signal *w, int revents) |
2111 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
832 | { |
2112 | { |
833 | fprintf (stderr, "generic %x\n", revents); |
2113 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
834 | |
2114 | |
835 | } |
2115 | if (expect_false (!once)) |
836 | |
|
|
837 | int main (void) |
|
|
838 | { |
|
|
839 | ev_init (0); |
|
|
840 | |
|
|
841 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
842 | evio_start (&wio); |
|
|
843 | |
|
|
844 | struct ev_timer t[10000]; |
|
|
845 | |
|
|
846 | #if 0 |
|
|
847 | int i; |
|
|
848 | for (i = 0; i < 10000; ++i) |
|
|
849 | { |
|
|
850 | struct ev_timer *w = t + i; |
|
|
851 | evw_init (w, ocb, i); |
|
|
852 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
853 | evtimer_start (w); |
|
|
854 | if (drand48 () < 0.5) |
|
|
855 | evtimer_stop (w); |
|
|
856 | } |
2116 | { |
857 | #endif |
2117 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
858 | |
|
|
859 | struct ev_timer t1; |
|
|
860 | evtimer_init (&t1, ocb, 5, 10); |
|
|
861 | evtimer_start (&t1); |
|
|
862 | |
|
|
863 | struct ev_signal sig; |
|
|
864 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
865 | evsignal_start (&sig); |
|
|
866 | |
|
|
867 | struct ev_check cw; |
|
|
868 | evcheck_init (&cw, gcb); |
|
|
869 | evcheck_start (&cw); |
|
|
870 | |
|
|
871 | struct ev_idle iw; |
|
|
872 | evidle_init (&iw, gcb); |
|
|
873 | evidle_start (&iw); |
|
|
874 | |
|
|
875 | ev_loop (0); |
|
|
876 | |
|
|
877 | return 0; |
2118 | return; |
878 | } |
2119 | } |
879 | |
2120 | |
880 | #endif |
2121 | once->cb = cb; |
|
|
2122 | once->arg = arg; |
881 | |
2123 | |
|
|
2124 | ev_init (&once->io, once_cb_io); |
|
|
2125 | if (fd >= 0) |
|
|
2126 | { |
|
|
2127 | ev_io_set (&once->io, fd, events); |
|
|
2128 | ev_io_start (EV_A_ &once->io); |
|
|
2129 | } |
882 | |
2130 | |
|
|
2131 | ev_init (&once->to, once_cb_to); |
|
|
2132 | if (timeout >= 0.) |
|
|
2133 | { |
|
|
2134 | ev_timer_set (&once->to, timeout, 0.); |
|
|
2135 | ev_timer_start (EV_A_ &once->to); |
|
|
2136 | } |
|
|
2137 | } |
883 | |
2138 | |
|
|
2139 | #ifdef __cplusplus |
|
|
2140 | } |
|
|
2141 | #endif |
884 | |
2142 | |