1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
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 |
29 | #if EV_USE_CONFIG_H |
37 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
30 | # include "config.h" |
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 | |
31 | #endif |
107 | #endif |
32 | |
108 | |
33 | #include <math.h> |
109 | #include <math.h> |
34 | #include <stdlib.h> |
110 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
111 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
112 | #include <stddef.h> |
39 | |
113 | |
40 | #include <stdio.h> |
114 | #include <stdio.h> |
41 | |
115 | |
42 | #include <assert.h> |
116 | #include <assert.h> |
43 | #include <errno.h> |
117 | #include <errno.h> |
44 | #include <sys/types.h> |
118 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #include <time.h> |
119 | #include <time.h> |
48 | |
120 | |
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121 | #include <signal.h> |
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122 | |
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123 | #ifdef EV_H |
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124 | # include EV_H |
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125 | #else |
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126 | # include "ev.h" |
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127 | #endif |
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128 | |
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129 | #ifndef _WIN32 |
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130 | # include <sys/time.h> |
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131 | # include <sys/wait.h> |
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132 | # include <unistd.h> |
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133 | #else |
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134 | # define WIN32_LEAN_AND_MEAN |
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135 | # include <windows.h> |
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136 | # ifndef EV_SELECT_IS_WINSOCKET |
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137 | # define EV_SELECT_IS_WINSOCKET 1 |
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138 | # endif |
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139 | #endif |
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140 | |
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141 | /**/ |
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142 | |
49 | #ifndef EV_USE_MONOTONIC |
143 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
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51 | # define EV_USE_MONOTONIC 1 |
144 | # define EV_USE_MONOTONIC 0 |
52 | # endif |
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 |
53 | #endif |
149 | #endif |
54 | |
150 | |
55 | #ifndef EV_USE_SELECT |
151 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
152 | # define EV_USE_SELECT 1 |
57 | #endif |
153 | #endif |
58 | |
154 | |
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155 | #ifndef EV_USE_POLL |
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156 | # ifdef _WIN32 |
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157 | # define EV_USE_POLL 0 |
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158 | # else |
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159 | # define EV_USE_POLL 1 |
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160 | # endif |
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161 | #endif |
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162 | |
59 | #ifndef EV_USE_EPOLL |
163 | #ifndef EV_USE_EPOLL |
60 | # define EV_USE_EPOLL 0 |
164 | # define EV_USE_EPOLL 0 |
61 | #endif |
165 | #endif |
62 | |
166 | |
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167 | #ifndef EV_USE_KQUEUE |
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168 | # define EV_USE_KQUEUE 0 |
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169 | #endif |
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170 | |
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171 | #ifndef EV_USE_PORT |
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172 | # define EV_USE_PORT 0 |
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173 | #endif |
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174 | |
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175 | #ifndef EV_USE_INOTIFY |
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176 | # define EV_USE_INOTIFY 0 |
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177 | #endif |
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178 | |
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179 | #ifndef EV_PID_HASHSIZE |
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180 | # if EV_MINIMAL |
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181 | # define EV_PID_HASHSIZE 1 |
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182 | # else |
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183 | # define EV_PID_HASHSIZE 16 |
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184 | # endif |
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185 | #endif |
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186 | |
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187 | #ifndef EV_INOTIFY_HASHSIZE |
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188 | # if EV_MINIMAL |
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189 | # define EV_INOTIFY_HASHSIZE 1 |
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190 | # else |
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191 | # define EV_INOTIFY_HASHSIZE 16 |
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192 | # endif |
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193 | #endif |
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194 | |
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195 | /**/ |
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196 | |
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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 | |
63 | #ifndef CLOCK_REALTIME |
202 | #ifndef CLOCK_REALTIME |
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203 | # undef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 0 |
204 | # define EV_USE_REALTIME 0 |
65 | #endif |
205 | #endif |
66 | #ifndef EV_USE_REALTIME |
206 | |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
207 | #if EV_SELECT_IS_WINSOCKET |
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208 | # include <winsock.h> |
68 | #endif |
209 | #endif |
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210 | |
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211 | #if !EV_STAT_ENABLE |
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212 | # define EV_USE_INOTIFY 0 |
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213 | #endif |
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214 | |
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215 | #if EV_USE_INOTIFY |
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216 | # include <sys/inotify.h> |
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217 | #endif |
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218 | |
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219 | /**/ |
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220 | |
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221 | /* |
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222 | * This is used to avoid floating point rounding problems. |
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223 | * It is added to ev_rt_now when scheduling periodics |
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224 | * to ensure progress, time-wise, even when rounding |
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225 | * errors are against us. |
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226 | * This value is good at least till the year 4000. |
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227 | * Better solutions welcome. |
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228 | */ |
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229 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
69 | |
230 | |
70 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
231 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
232 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
233 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
74 | |
234 | |
75 | #include "ev.h" |
235 | #if __GNUC__ >= 3 |
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236 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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237 | # define noinline __attribute__ ((noinline)) |
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238 | #else |
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239 | # define expect(expr,value) (expr) |
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240 | # define noinline |
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241 | # if __STDC_VERSION__ < 199901L |
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242 | # define inline |
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243 | # endif |
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244 | #endif |
76 | |
245 | |
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246 | #define expect_false(expr) expect ((expr) != 0, 0) |
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247 | #define expect_true(expr) expect ((expr) != 0, 1) |
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248 | #define inline_size static inline |
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249 | |
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250 | #if EV_MINIMAL |
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251 | # define inline_speed static noinline |
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252 | #else |
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253 | # define inline_speed static inline |
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254 | #endif |
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255 | |
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256 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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257 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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258 | |
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259 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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260 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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261 | |
77 | typedef struct ev_watcher *W; |
262 | typedef ev_watcher *W; |
78 | typedef struct ev_watcher_list *WL; |
263 | typedef ev_watcher_list *WL; |
79 | typedef struct ev_watcher_time *WT; |
264 | typedef ev_watcher_time *WT; |
80 | |
265 | |
81 | static ev_tstamp now, diff; /* monotonic clock */ |
266 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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267 | |
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268 | #ifdef _WIN32 |
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269 | # include "ev_win32.c" |
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270 | #endif |
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271 | |
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272 | /*****************************************************************************/ |
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273 | |
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274 | static void (*syserr_cb)(const char *msg); |
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275 | |
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276 | void |
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277 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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278 | { |
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279 | syserr_cb = cb; |
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280 | } |
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281 | |
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282 | static void noinline |
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283 | syserr (const char *msg) |
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284 | { |
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285 | if (!msg) |
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286 | msg = "(libev) system error"; |
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287 | |
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288 | if (syserr_cb) |
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289 | syserr_cb (msg); |
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290 | else |
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291 | { |
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292 | perror (msg); |
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293 | abort (); |
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294 | } |
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295 | } |
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296 | |
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297 | static void *(*alloc)(void *ptr, long size); |
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298 | |
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299 | void |
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300 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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301 | { |
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302 | alloc = cb; |
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303 | } |
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304 | |
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305 | inline_speed void * |
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306 | ev_realloc (void *ptr, long size) |
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307 | { |
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308 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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309 | |
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310 | if (!ptr && size) |
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311 | { |
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312 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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313 | abort (); |
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314 | } |
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315 | |
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316 | return ptr; |
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317 | } |
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318 | |
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319 | #define ev_malloc(size) ev_realloc (0, (size)) |
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320 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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321 | |
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322 | /*****************************************************************************/ |
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323 | |
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324 | typedef struct |
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325 | { |
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326 | WL head; |
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327 | unsigned char events; |
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328 | unsigned char reify; |
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329 | #if EV_SELECT_IS_WINSOCKET |
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330 | SOCKET handle; |
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331 | #endif |
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332 | } ANFD; |
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333 | |
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334 | typedef struct |
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335 | { |
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336 | W w; |
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337 | int events; |
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338 | } ANPENDING; |
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339 | |
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340 | #if EV_USE_INOTIFY |
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341 | typedef struct |
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342 | { |
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343 | WL head; |
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344 | } ANFS; |
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345 | #endif |
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346 | |
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347 | #if EV_MULTIPLICITY |
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348 | |
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349 | struct ev_loop |
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350 | { |
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351 | ev_tstamp ev_rt_now; |
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352 | #define ev_rt_now ((loop)->ev_rt_now) |
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353 | #define VAR(name,decl) decl; |
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354 | #include "ev_vars.h" |
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355 | #undef VAR |
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356 | }; |
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357 | #include "ev_wrap.h" |
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358 | |
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359 | static struct ev_loop default_loop_struct; |
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360 | struct ev_loop *ev_default_loop_ptr; |
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361 | |
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362 | #else |
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363 | |
82 | ev_tstamp ev_now; |
364 | ev_tstamp ev_rt_now; |
83 | int ev_method; |
365 | #define VAR(name,decl) static decl; |
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366 | #include "ev_vars.h" |
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367 | #undef VAR |
84 | |
368 | |
85 | static int have_monotonic; /* runtime */ |
369 | static int ev_default_loop_ptr; |
86 | |
370 | |
87 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
371 | #endif |
88 | static void (*method_modify)(int fd, int oev, int nev); |
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89 | static void (*method_poll)(ev_tstamp timeout); |
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90 | |
372 | |
91 | /*****************************************************************************/ |
373 | /*****************************************************************************/ |
92 | |
374 | |
93 | ev_tstamp |
375 | ev_tstamp |
94 | ev_time (void) |
376 | ev_time (void) |
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102 | gettimeofday (&tv, 0); |
384 | gettimeofday (&tv, 0); |
103 | return tv.tv_sec + tv.tv_usec * 1e-6; |
385 | return tv.tv_sec + tv.tv_usec * 1e-6; |
104 | #endif |
386 | #endif |
105 | } |
387 | } |
106 | |
388 | |
107 | static ev_tstamp |
389 | ev_tstamp inline_size |
108 | get_clock (void) |
390 | get_clock (void) |
109 | { |
391 | { |
110 | #if EV_USE_MONOTONIC |
392 | #if EV_USE_MONOTONIC |
111 | if (have_monotonic) |
393 | if (expect_true (have_monotonic)) |
112 | { |
394 | { |
113 | struct timespec ts; |
395 | struct timespec ts; |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
396 | clock_gettime (CLOCK_MONOTONIC, &ts); |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
397 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
116 | } |
398 | } |
117 | #endif |
399 | #endif |
118 | |
400 | |
119 | return ev_time (); |
401 | return ev_time (); |
120 | } |
402 | } |
121 | |
403 | |
122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
404 | #if EV_MULTIPLICITY |
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405 | ev_tstamp |
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406 | ev_now (EV_P) |
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407 | { |
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408 | return ev_rt_now; |
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409 | } |
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410 | #endif |
123 | |
411 | |
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412 | int inline_size |
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413 | array_nextsize (int elem, int cur, int cnt) |
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414 | { |
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415 | int ncur = cur + 1; |
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416 | |
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417 | do |
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418 | ncur <<= 1; |
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419 | while (cnt > ncur); |
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420 | |
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421 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
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422 | if (elem * ncur > 4096) |
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423 | { |
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424 | ncur *= elem; |
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425 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
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426 | ncur = ncur - sizeof (void *) * 4; |
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427 | ncur /= elem; |
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428 | } |
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429 | |
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430 | return ncur; |
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431 | } |
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432 | |
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433 | static noinline void * |
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434 | array_realloc (int elem, void *base, int *cur, int cnt) |
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435 | { |
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436 | *cur = array_nextsize (elem, *cur, cnt); |
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437 | return ev_realloc (base, elem * *cur); |
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438 | } |
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439 | |
124 | #define array_needsize(base,cur,cnt,init) \ |
440 | #define array_needsize(type,base,cur,cnt,init) \ |
125 | if ((cnt) > cur) \ |
441 | if (expect_false ((cnt) > (cur))) \ |
126 | { \ |
442 | { \ |
127 | int newcnt = cur; \ |
443 | int ocur_ = (cur); \ |
128 | do \ |
444 | (base) = (type *)array_realloc \ |
129 | { \ |
445 | (sizeof (type), (base), &(cur), (cnt)); \ |
130 | newcnt = array_roundsize (base, newcnt << 1); \ |
446 | init ((base) + (ocur_), (cur) - ocur_); \ |
131 | } \ |
447 | } |
132 | while ((cnt) > newcnt); \ |
448 | |
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449 | #if 0 |
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450 | #define array_slim(type,stem) \ |
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451 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
133 | \ |
452 | { \ |
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
453 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
135 | init (base + cur, newcnt - cur); \ |
454 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
136 | cur = newcnt; \ |
455 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
137 | } |
456 | } |
|
|
457 | #endif |
|
|
458 | |
|
|
459 | #define array_free(stem, idx) \ |
|
|
460 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
138 | |
461 | |
139 | /*****************************************************************************/ |
462 | /*****************************************************************************/ |
140 | |
463 | |
141 | typedef struct |
464 | void noinline |
|
|
465 | ev_feed_event (EV_P_ void *w, int revents) |
142 | { |
466 | { |
143 | struct ev_io *head; |
467 | W w_ = (W)w; |
144 | unsigned char events; |
468 | int pri = ABSPRI (w_); |
145 | unsigned char reify; |
|
|
146 | } ANFD; |
|
|
147 | |
469 | |
148 | static ANFD *anfds; |
470 | if (expect_false (w_->pending)) |
149 | static int anfdmax; |
471 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
472 | else |
|
|
473 | { |
|
|
474 | w_->pending = ++pendingcnt [pri]; |
|
|
475 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
476 | pendings [pri][w_->pending - 1].w = w_; |
|
|
477 | pendings [pri][w_->pending - 1].events = revents; |
|
|
478 | } |
|
|
479 | } |
150 | |
480 | |
151 | static void |
481 | void inline_speed |
|
|
482 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
483 | { |
|
|
484 | int i; |
|
|
485 | |
|
|
486 | for (i = 0; i < eventcnt; ++i) |
|
|
487 | ev_feed_event (EV_A_ events [i], type); |
|
|
488 | } |
|
|
489 | |
|
|
490 | /*****************************************************************************/ |
|
|
491 | |
|
|
492 | void inline_size |
152 | anfds_init (ANFD *base, int count) |
493 | anfds_init (ANFD *base, int count) |
153 | { |
494 | { |
154 | while (count--) |
495 | while (count--) |
155 | { |
496 | { |
156 | base->head = 0; |
497 | base->head = 0; |
… | |
… | |
159 | |
500 | |
160 | ++base; |
501 | ++base; |
161 | } |
502 | } |
162 | } |
503 | } |
163 | |
504 | |
164 | typedef struct |
505 | void inline_speed |
165 | { |
|
|
166 | W w; |
|
|
167 | int events; |
|
|
168 | } ANPENDING; |
|
|
169 | |
|
|
170 | static ANPENDING *pendings; |
|
|
171 | static int pendingmax, pendingcnt; |
|
|
172 | |
|
|
173 | static void |
|
|
174 | event (W w, int events) |
|
|
175 | { |
|
|
176 | if (w->pending) |
|
|
177 | { |
|
|
178 | pendings [w->pending - 1].events |= events; |
|
|
179 | return; |
|
|
180 | } |
|
|
181 | |
|
|
182 | w->pending = ++pendingcnt; |
|
|
183 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
184 | pendings [pendingcnt - 1].w = w; |
|
|
185 | pendings [pendingcnt - 1].events = events; |
|
|
186 | } |
|
|
187 | |
|
|
188 | static void |
|
|
189 | queue_events (W *events, int eventcnt, int type) |
|
|
190 | { |
|
|
191 | int i; |
|
|
192 | |
|
|
193 | for (i = 0; i < eventcnt; ++i) |
|
|
194 | event (events [i], type); |
|
|
195 | } |
|
|
196 | |
|
|
197 | static void |
|
|
198 | fd_event (int fd, int events) |
506 | fd_event (EV_P_ int fd, int revents) |
199 | { |
507 | { |
200 | ANFD *anfd = anfds + fd; |
508 | ANFD *anfd = anfds + fd; |
201 | struct ev_io *w; |
509 | ev_io *w; |
202 | |
510 | |
203 | for (w = anfd->head; w; w = w->next) |
511 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
204 | { |
512 | { |
205 | int ev = w->events & events; |
513 | int ev = w->events & revents; |
206 | |
514 | |
207 | if (ev) |
515 | if (ev) |
208 | event ((W)w, ev); |
516 | ev_feed_event (EV_A_ (W)w, ev); |
209 | } |
517 | } |
210 | } |
518 | } |
211 | |
519 | |
212 | /*****************************************************************************/ |
520 | void |
|
|
521 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
522 | { |
|
|
523 | if (fd >= 0 && fd < anfdmax) |
|
|
524 | fd_event (EV_A_ fd, revents); |
|
|
525 | } |
213 | |
526 | |
214 | static int *fdchanges; |
527 | void inline_size |
215 | static int fdchangemax, fdchangecnt; |
528 | fd_reify (EV_P) |
216 | |
|
|
217 | static void |
|
|
218 | fd_reify (void) |
|
|
219 | { |
529 | { |
220 | int i; |
530 | int i; |
221 | |
531 | |
222 | for (i = 0; i < fdchangecnt; ++i) |
532 | for (i = 0; i < fdchangecnt; ++i) |
223 | { |
533 | { |
224 | int fd = fdchanges [i]; |
534 | int fd = fdchanges [i]; |
225 | ANFD *anfd = anfds + fd; |
535 | ANFD *anfd = anfds + fd; |
226 | struct ev_io *w; |
536 | ev_io *w; |
227 | |
537 | |
228 | int events = 0; |
538 | unsigned char events = 0; |
229 | |
539 | |
230 | for (w = anfd->head; w; w = w->next) |
540 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
231 | events |= w->events; |
541 | events |= (unsigned char)w->events; |
232 | |
542 | |
233 | anfd->reify = 0; |
543 | #if EV_SELECT_IS_WINSOCKET |
234 | |
544 | if (events) |
235 | if (anfd->events != events) |
|
|
236 | { |
545 | { |
237 | method_modify (fd, anfd->events, events); |
546 | unsigned long argp; |
238 | anfd->events = events; |
547 | anfd->handle = _get_osfhandle (fd); |
|
|
548 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
239 | } |
549 | } |
|
|
550 | #endif |
|
|
551 | |
|
|
552 | { |
|
|
553 | unsigned char o_events = anfd->events; |
|
|
554 | unsigned char o_reify = anfd->reify; |
|
|
555 | |
|
|
556 | anfd->reify = 0; |
|
|
557 | anfd->events = events; |
|
|
558 | |
|
|
559 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
560 | backend_modify (EV_A_ fd, o_events, events); |
|
|
561 | } |
240 | } |
562 | } |
241 | |
563 | |
242 | fdchangecnt = 0; |
564 | fdchangecnt = 0; |
243 | } |
565 | } |
244 | |
566 | |
245 | static void |
567 | void inline_size |
246 | fd_change (int fd) |
568 | fd_change (EV_P_ int fd, int flags) |
247 | { |
569 | { |
248 | if (anfds [fd].reify || fdchangecnt < 0) |
570 | unsigned char reify = anfds [fd].reify; |
249 | return; |
|
|
250 | |
|
|
251 | anfds [fd].reify = 1; |
571 | anfds [fd].reify |= flags; |
252 | |
572 | |
|
|
573 | if (expect_true (!reify)) |
|
|
574 | { |
253 | ++fdchangecnt; |
575 | ++fdchangecnt; |
254 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
576 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
255 | fdchanges [fdchangecnt - 1] = fd; |
577 | fdchanges [fdchangecnt - 1] = fd; |
|
|
578 | } |
|
|
579 | } |
|
|
580 | |
|
|
581 | void inline_speed |
|
|
582 | fd_kill (EV_P_ int fd) |
|
|
583 | { |
|
|
584 | ev_io *w; |
|
|
585 | |
|
|
586 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
587 | { |
|
|
588 | ev_io_stop (EV_A_ w); |
|
|
589 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
590 | } |
|
|
591 | } |
|
|
592 | |
|
|
593 | int inline_size |
|
|
594 | fd_valid (int fd) |
|
|
595 | { |
|
|
596 | #ifdef _WIN32 |
|
|
597 | return _get_osfhandle (fd) != -1; |
|
|
598 | #else |
|
|
599 | return fcntl (fd, F_GETFD) != -1; |
|
|
600 | #endif |
256 | } |
601 | } |
257 | |
602 | |
258 | /* called on EBADF to verify fds */ |
603 | /* called on EBADF to verify fds */ |
259 | static void |
604 | static void noinline |
260 | fd_recheck (void) |
605 | fd_ebadf (EV_P) |
261 | { |
606 | { |
262 | int fd; |
607 | int fd; |
263 | |
608 | |
264 | for (fd = 0; fd < anfdmax; ++fd) |
609 | for (fd = 0; fd < anfdmax; ++fd) |
265 | if (anfds [fd].events) |
610 | if (anfds [fd].events) |
266 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
611 | if (!fd_valid (fd) == -1 && errno == EBADF) |
267 | while (anfds [fd].head) |
612 | fd_kill (EV_A_ fd); |
|
|
613 | } |
|
|
614 | |
|
|
615 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
616 | static void noinline |
|
|
617 | fd_enomem (EV_P) |
|
|
618 | { |
|
|
619 | int fd; |
|
|
620 | |
|
|
621 | for (fd = anfdmax; fd--; ) |
|
|
622 | if (anfds [fd].events) |
268 | { |
623 | { |
269 | ev_io_stop (anfds [fd].head); |
624 | fd_kill (EV_A_ fd); |
270 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
625 | return; |
271 | } |
626 | } |
|
|
627 | } |
|
|
628 | |
|
|
629 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
630 | static void noinline |
|
|
631 | fd_rearm_all (EV_P) |
|
|
632 | { |
|
|
633 | int fd; |
|
|
634 | |
|
|
635 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
636 | if (anfds [fd].events) |
|
|
637 | { |
|
|
638 | anfds [fd].events = 0; |
|
|
639 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
640 | } |
272 | } |
641 | } |
273 | |
642 | |
274 | /*****************************************************************************/ |
643 | /*****************************************************************************/ |
275 | |
644 | |
276 | static struct ev_timer **timers; |
645 | void inline_speed |
277 | static int timermax, timercnt; |
|
|
278 | |
|
|
279 | static struct ev_periodic **periodics; |
|
|
280 | static int periodicmax, periodiccnt; |
|
|
281 | |
|
|
282 | static void |
|
|
283 | upheap (WT *timers, int k) |
646 | upheap (WT *heap, int k) |
284 | { |
647 | { |
285 | WT w = timers [k]; |
648 | WT w = heap [k]; |
286 | |
649 | |
287 | while (k && timers [k >> 1]->at > w->at) |
650 | while (k) |
288 | { |
|
|
289 | timers [k] = timers [k >> 1]; |
|
|
290 | timers [k]->active = k + 1; |
|
|
291 | k >>= 1; |
|
|
292 | } |
651 | { |
293 | |
|
|
294 | timers [k] = w; |
|
|
295 | timers [k]->active = k + 1; |
|
|
296 | |
|
|
297 | } |
|
|
298 | |
|
|
299 | static void |
|
|
300 | downheap (WT *timers, int N, int k) |
|
|
301 | { |
|
|
302 | WT w = timers [k]; |
|
|
303 | |
|
|
304 | while (k < (N >> 1)) |
|
|
305 | { |
|
|
306 | int j = k << 1; |
652 | int p = (k - 1) >> 1; |
307 | |
653 | |
308 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
654 | if (heap [p]->at <= w->at) |
309 | ++j; |
|
|
310 | |
|
|
311 | if (w->at <= timers [j]->at) |
|
|
312 | break; |
655 | break; |
313 | |
656 | |
314 | timers [k] = timers [j]; |
657 | heap [k] = heap [p]; |
315 | timers [k]->active = k + 1; |
658 | ((W)heap [k])->active = k + 1; |
316 | k = j; |
659 | k = p; |
|
|
660 | } |
|
|
661 | |
|
|
662 | heap [k] = w; |
|
|
663 | ((W)heap [k])->active = k + 1; |
|
|
664 | } |
|
|
665 | |
|
|
666 | void inline_speed |
|
|
667 | downheap (WT *heap, int N, int k) |
|
|
668 | { |
|
|
669 | WT w = heap [k]; |
|
|
670 | |
|
|
671 | for (;;) |
317 | } |
672 | { |
|
|
673 | int c = (k << 1) + 1; |
318 | |
674 | |
|
|
675 | if (c >= N) |
|
|
676 | break; |
|
|
677 | |
|
|
678 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
679 | ? 1 : 0; |
|
|
680 | |
|
|
681 | if (w->at <= heap [c]->at) |
|
|
682 | break; |
|
|
683 | |
|
|
684 | heap [k] = heap [c]; |
|
|
685 | ((W)heap [k])->active = k + 1; |
|
|
686 | |
|
|
687 | k = c; |
|
|
688 | } |
|
|
689 | |
319 | timers [k] = w; |
690 | heap [k] = w; |
320 | timers [k]->active = k + 1; |
691 | ((W)heap [k])->active = k + 1; |
|
|
692 | } |
|
|
693 | |
|
|
694 | void inline_size |
|
|
695 | adjustheap (WT *heap, int N, int k) |
|
|
696 | { |
|
|
697 | upheap (heap, k); |
|
|
698 | downheap (heap, N, k); |
321 | } |
699 | } |
322 | |
700 | |
323 | /*****************************************************************************/ |
701 | /*****************************************************************************/ |
324 | |
702 | |
325 | typedef struct |
703 | typedef struct |
326 | { |
704 | { |
327 | struct ev_signal *head; |
705 | WL head; |
328 | sig_atomic_t volatile gotsig; |
706 | sig_atomic_t volatile gotsig; |
329 | } ANSIG; |
707 | } ANSIG; |
330 | |
708 | |
331 | static ANSIG *signals; |
709 | static ANSIG *signals; |
332 | static int signalmax; |
710 | static int signalmax; |
333 | |
711 | |
334 | static int sigpipe [2]; |
712 | static int sigpipe [2]; |
335 | static sig_atomic_t volatile gotsig; |
713 | static sig_atomic_t volatile gotsig; |
336 | static struct ev_io sigev; |
714 | static ev_io sigev; |
337 | |
715 | |
338 | static void |
716 | void inline_size |
339 | signals_init (ANSIG *base, int count) |
717 | signals_init (ANSIG *base, int count) |
340 | { |
718 | { |
341 | while (count--) |
719 | while (count--) |
342 | { |
720 | { |
343 | base->head = 0; |
721 | base->head = 0; |
… | |
… | |
348 | } |
726 | } |
349 | |
727 | |
350 | static void |
728 | static void |
351 | sighandler (int signum) |
729 | sighandler (int signum) |
352 | { |
730 | { |
|
|
731 | #if _WIN32 |
|
|
732 | signal (signum, sighandler); |
|
|
733 | #endif |
|
|
734 | |
353 | signals [signum - 1].gotsig = 1; |
735 | signals [signum - 1].gotsig = 1; |
354 | |
736 | |
355 | if (!gotsig) |
737 | if (!gotsig) |
356 | { |
738 | { |
|
|
739 | int old_errno = errno; |
357 | gotsig = 1; |
740 | gotsig = 1; |
358 | write (sigpipe [1], &signum, 1); |
741 | write (sigpipe [1], &signum, 1); |
|
|
742 | errno = old_errno; |
359 | } |
743 | } |
|
|
744 | } |
|
|
745 | |
|
|
746 | void noinline |
|
|
747 | ev_feed_signal_event (EV_P_ int signum) |
|
|
748 | { |
|
|
749 | WL w; |
|
|
750 | |
|
|
751 | #if EV_MULTIPLICITY |
|
|
752 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
753 | #endif |
|
|
754 | |
|
|
755 | --signum; |
|
|
756 | |
|
|
757 | if (signum < 0 || signum >= signalmax) |
|
|
758 | return; |
|
|
759 | |
|
|
760 | signals [signum].gotsig = 0; |
|
|
761 | |
|
|
762 | for (w = signals [signum].head; w; w = w->next) |
|
|
763 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
360 | } |
764 | } |
361 | |
765 | |
362 | static void |
766 | static void |
363 | sigcb (struct ev_io *iow, int revents) |
767 | sigcb (EV_P_ ev_io *iow, int revents) |
364 | { |
768 | { |
365 | struct ev_signal *w; |
|
|
366 | int sig; |
769 | int signum; |
367 | |
770 | |
368 | read (sigpipe [0], &revents, 1); |
771 | read (sigpipe [0], &revents, 1); |
369 | gotsig = 0; |
772 | gotsig = 0; |
370 | |
773 | |
371 | for (sig = signalmax; sig--; ) |
774 | for (signum = signalmax; signum--; ) |
372 | if (signals [sig].gotsig) |
775 | if (signals [signum].gotsig) |
|
|
776 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
777 | } |
|
|
778 | |
|
|
779 | void inline_speed |
|
|
780 | fd_intern (int fd) |
|
|
781 | { |
|
|
782 | #ifdef _WIN32 |
|
|
783 | int arg = 1; |
|
|
784 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
785 | #else |
|
|
786 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
787 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
788 | #endif |
|
|
789 | } |
|
|
790 | |
|
|
791 | static void noinline |
|
|
792 | siginit (EV_P) |
|
|
793 | { |
|
|
794 | fd_intern (sigpipe [0]); |
|
|
795 | fd_intern (sigpipe [1]); |
|
|
796 | |
|
|
797 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
798 | ev_io_start (EV_A_ &sigev); |
|
|
799 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
800 | } |
|
|
801 | |
|
|
802 | /*****************************************************************************/ |
|
|
803 | |
|
|
804 | static WL childs [EV_PID_HASHSIZE]; |
|
|
805 | |
|
|
806 | #ifndef _WIN32 |
|
|
807 | |
|
|
808 | static ev_signal childev; |
|
|
809 | |
|
|
810 | void inline_speed |
|
|
811 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
812 | { |
|
|
813 | ev_child *w; |
|
|
814 | |
|
|
815 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
816 | if (w->pid == pid || !w->pid) |
373 | { |
817 | { |
374 | signals [sig].gotsig = 0; |
818 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
375 | |
819 | w->rpid = pid; |
376 | for (w = signals [sig].head; w; w = w->next) |
820 | w->rstatus = status; |
377 | event ((W)w, EV_SIGNAL); |
821 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
378 | } |
822 | } |
379 | } |
823 | } |
380 | |
|
|
381 | static void |
|
|
382 | siginit (void) |
|
|
383 | { |
|
|
384 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
385 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
386 | |
|
|
387 | /* rather than sort out wether we really need nb, set it */ |
|
|
388 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
389 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
390 | |
|
|
391 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
392 | ev_io_start (&sigev); |
|
|
393 | } |
|
|
394 | |
|
|
395 | /*****************************************************************************/ |
|
|
396 | |
|
|
397 | static struct ev_idle **idles; |
|
|
398 | static int idlemax, idlecnt; |
|
|
399 | |
|
|
400 | static struct ev_prepare **prepares; |
|
|
401 | static int preparemax, preparecnt; |
|
|
402 | |
|
|
403 | static struct ev_check **checks; |
|
|
404 | static int checkmax, checkcnt; |
|
|
405 | |
|
|
406 | /*****************************************************************************/ |
|
|
407 | |
|
|
408 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
409 | static struct ev_signal childev; |
|
|
410 | |
824 | |
411 | #ifndef WCONTINUED |
825 | #ifndef WCONTINUED |
412 | # define WCONTINUED 0 |
826 | # define WCONTINUED 0 |
413 | #endif |
827 | #endif |
414 | |
828 | |
415 | static void |
829 | static void |
416 | childcb (struct ev_signal *sw, int revents) |
830 | childcb (EV_P_ ev_signal *sw, int revents) |
417 | { |
831 | { |
418 | struct ev_child *w; |
|
|
419 | int pid, status; |
832 | int pid, status; |
420 | |
833 | |
|
|
834 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
421 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
835 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
422 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
836 | if (!WCONTINUED |
423 | if (w->pid == pid || w->pid == -1) |
837 | || errno != EINVAL |
424 | { |
838 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
425 | w->status = status; |
839 | return; |
426 | event ((W)w, EV_CHILD); |
840 | |
427 | } |
841 | /* make sure we are called again until all childs have been reaped */ |
|
|
842 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
843 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
844 | |
|
|
845 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
846 | if (EV_PID_HASHSIZE > 1) |
|
|
847 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
428 | } |
848 | } |
|
|
849 | |
|
|
850 | #endif |
429 | |
851 | |
430 | /*****************************************************************************/ |
852 | /*****************************************************************************/ |
431 | |
853 | |
|
|
854 | #if EV_USE_PORT |
|
|
855 | # include "ev_port.c" |
|
|
856 | #endif |
|
|
857 | #if EV_USE_KQUEUE |
|
|
858 | # include "ev_kqueue.c" |
|
|
859 | #endif |
432 | #if EV_USE_EPOLL |
860 | #if EV_USE_EPOLL |
433 | # include "ev_epoll.c" |
861 | # include "ev_epoll.c" |
434 | #endif |
862 | #endif |
|
|
863 | #if EV_USE_POLL |
|
|
864 | # include "ev_poll.c" |
|
|
865 | #endif |
435 | #if EV_USE_SELECT |
866 | #if EV_USE_SELECT |
436 | # include "ev_select.c" |
867 | # include "ev_select.c" |
437 | #endif |
868 | #endif |
438 | |
869 | |
439 | int |
870 | int |
… | |
… | |
446 | ev_version_minor (void) |
877 | ev_version_minor (void) |
447 | { |
878 | { |
448 | return EV_VERSION_MINOR; |
879 | return EV_VERSION_MINOR; |
449 | } |
880 | } |
450 | |
881 | |
451 | int ev_init (int flags) |
882 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
883 | int inline_size |
|
|
884 | enable_secure (void) |
452 | { |
885 | { |
453 | if (!ev_method) |
886 | #ifdef _WIN32 |
|
|
887 | return 0; |
|
|
888 | #else |
|
|
889 | return getuid () != geteuid () |
|
|
890 | || getgid () != getegid (); |
|
|
891 | #endif |
|
|
892 | } |
|
|
893 | |
|
|
894 | unsigned int |
|
|
895 | ev_supported_backends (void) |
|
|
896 | { |
|
|
897 | unsigned int flags = 0; |
|
|
898 | |
|
|
899 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
900 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
901 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
902 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
903 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
904 | |
|
|
905 | return flags; |
|
|
906 | } |
|
|
907 | |
|
|
908 | unsigned int |
|
|
909 | ev_recommended_backends (void) |
|
|
910 | { |
|
|
911 | unsigned int flags = ev_supported_backends (); |
|
|
912 | |
|
|
913 | #ifndef __NetBSD__ |
|
|
914 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
915 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
916 | flags &= ~EVBACKEND_KQUEUE; |
|
|
917 | #endif |
|
|
918 | #ifdef __APPLE__ |
|
|
919 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
920 | flags &= ~EVBACKEND_POLL; |
|
|
921 | #endif |
|
|
922 | |
|
|
923 | return flags; |
|
|
924 | } |
|
|
925 | |
|
|
926 | unsigned int |
|
|
927 | ev_embeddable_backends (void) |
|
|
928 | { |
|
|
929 | return EVBACKEND_EPOLL |
|
|
930 | | EVBACKEND_KQUEUE |
|
|
931 | | EVBACKEND_PORT; |
|
|
932 | } |
|
|
933 | |
|
|
934 | unsigned int |
|
|
935 | ev_backend (EV_P) |
|
|
936 | { |
|
|
937 | return backend; |
|
|
938 | } |
|
|
939 | |
|
|
940 | unsigned int |
|
|
941 | ev_loop_count (EV_P) |
|
|
942 | { |
|
|
943 | return loop_count; |
|
|
944 | } |
|
|
945 | |
|
|
946 | static void noinline |
|
|
947 | loop_init (EV_P_ unsigned int flags) |
|
|
948 | { |
|
|
949 | if (!backend) |
454 | { |
950 | { |
455 | #if EV_USE_MONOTONIC |
951 | #if EV_USE_MONOTONIC |
456 | { |
952 | { |
457 | struct timespec ts; |
953 | struct timespec ts; |
458 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
954 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
459 | have_monotonic = 1; |
955 | have_monotonic = 1; |
460 | } |
956 | } |
461 | #endif |
957 | #endif |
462 | |
958 | |
463 | ev_now = ev_time (); |
959 | ev_rt_now = ev_time (); |
464 | now = get_clock (); |
960 | mn_now = get_clock (); |
|
|
961 | now_floor = mn_now; |
465 | diff = ev_now - now; |
962 | rtmn_diff = ev_rt_now - mn_now; |
466 | |
963 | |
467 | if (pipe (sigpipe)) |
964 | /* pid check not overridable via env */ |
468 | return 0; |
965 | #ifndef _WIN32 |
|
|
966 | if (flags & EVFLAG_FORKCHECK) |
|
|
967 | curpid = getpid (); |
|
|
968 | #endif |
469 | |
969 | |
470 | ev_method = EVMETHOD_NONE; |
970 | if (!(flags & EVFLAG_NOENV) |
|
|
971 | && !enable_secure () |
|
|
972 | && getenv ("LIBEV_FLAGS")) |
|
|
973 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
974 | |
|
|
975 | if (!(flags & 0x0000ffffUL)) |
|
|
976 | flags |= ev_recommended_backends (); |
|
|
977 | |
|
|
978 | backend = 0; |
|
|
979 | backend_fd = -1; |
|
|
980 | #if EV_USE_INOTIFY |
|
|
981 | fs_fd = -2; |
|
|
982 | #endif |
|
|
983 | |
|
|
984 | #if EV_USE_PORT |
|
|
985 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
986 | #endif |
|
|
987 | #if EV_USE_KQUEUE |
|
|
988 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
989 | #endif |
471 | #if EV_USE_EPOLL |
990 | #if EV_USE_EPOLL |
472 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
991 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
992 | #endif |
|
|
993 | #if EV_USE_POLL |
|
|
994 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
473 | #endif |
995 | #endif |
474 | #if EV_USE_SELECT |
996 | #if EV_USE_SELECT |
475 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
997 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
476 | #endif |
998 | #endif |
477 | |
999 | |
478 | if (ev_method) |
1000 | ev_init (&sigev, sigcb); |
|
|
1001 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
1002 | } |
|
|
1003 | } |
|
|
1004 | |
|
|
1005 | static void noinline |
|
|
1006 | loop_destroy (EV_P) |
|
|
1007 | { |
|
|
1008 | int i; |
|
|
1009 | |
|
|
1010 | #if EV_USE_INOTIFY |
|
|
1011 | if (fs_fd >= 0) |
|
|
1012 | close (fs_fd); |
|
|
1013 | #endif |
|
|
1014 | |
|
|
1015 | if (backend_fd >= 0) |
|
|
1016 | close (backend_fd); |
|
|
1017 | |
|
|
1018 | #if EV_USE_PORT |
|
|
1019 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1020 | #endif |
|
|
1021 | #if EV_USE_KQUEUE |
|
|
1022 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1023 | #endif |
|
|
1024 | #if EV_USE_EPOLL |
|
|
1025 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1026 | #endif |
|
|
1027 | #if EV_USE_POLL |
|
|
1028 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1029 | #endif |
|
|
1030 | #if EV_USE_SELECT |
|
|
1031 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1032 | #endif |
|
|
1033 | |
|
|
1034 | for (i = NUMPRI; i--; ) |
|
|
1035 | { |
|
|
1036 | array_free (pending, [i]); |
|
|
1037 | #if EV_IDLE_ENABLE |
|
|
1038 | array_free (idle, [i]); |
|
|
1039 | #endif |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1043 | array_free (fdchange, EMPTY); |
|
|
1044 | array_free (timer, EMPTY); |
|
|
1045 | #if EV_PERIODIC_ENABLE |
|
|
1046 | array_free (periodic, EMPTY); |
|
|
1047 | #endif |
|
|
1048 | array_free (prepare, EMPTY); |
|
|
1049 | array_free (check, EMPTY); |
|
|
1050 | |
|
|
1051 | backend = 0; |
|
|
1052 | } |
|
|
1053 | |
|
|
1054 | void inline_size infy_fork (EV_P); |
|
|
1055 | |
|
|
1056 | void inline_size |
|
|
1057 | loop_fork (EV_P) |
|
|
1058 | { |
|
|
1059 | #if EV_USE_PORT |
|
|
1060 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1061 | #endif |
|
|
1062 | #if EV_USE_KQUEUE |
|
|
1063 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1064 | #endif |
|
|
1065 | #if EV_USE_EPOLL |
|
|
1066 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1067 | #endif |
|
|
1068 | #if EV_USE_INOTIFY |
|
|
1069 | infy_fork (EV_A); |
|
|
1070 | #endif |
|
|
1071 | |
|
|
1072 | if (ev_is_active (&sigev)) |
|
|
1073 | { |
|
|
1074 | /* default loop */ |
|
|
1075 | |
|
|
1076 | ev_ref (EV_A); |
|
|
1077 | ev_io_stop (EV_A_ &sigev); |
|
|
1078 | close (sigpipe [0]); |
|
|
1079 | close (sigpipe [1]); |
|
|
1080 | |
|
|
1081 | while (pipe (sigpipe)) |
|
|
1082 | syserr ("(libev) error creating pipe"); |
|
|
1083 | |
|
|
1084 | siginit (EV_A); |
|
|
1085 | } |
|
|
1086 | |
|
|
1087 | postfork = 0; |
|
|
1088 | } |
|
|
1089 | |
|
|
1090 | #if EV_MULTIPLICITY |
|
|
1091 | struct ev_loop * |
|
|
1092 | ev_loop_new (unsigned int flags) |
|
|
1093 | { |
|
|
1094 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1095 | |
|
|
1096 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1097 | |
|
|
1098 | loop_init (EV_A_ flags); |
|
|
1099 | |
|
|
1100 | if (ev_backend (EV_A)) |
|
|
1101 | return loop; |
|
|
1102 | |
|
|
1103 | return 0; |
|
|
1104 | } |
|
|
1105 | |
|
|
1106 | void |
|
|
1107 | ev_loop_destroy (EV_P) |
|
|
1108 | { |
|
|
1109 | loop_destroy (EV_A); |
|
|
1110 | ev_free (loop); |
|
|
1111 | } |
|
|
1112 | |
|
|
1113 | void |
|
|
1114 | ev_loop_fork (EV_P) |
|
|
1115 | { |
|
|
1116 | postfork = 1; |
|
|
1117 | } |
|
|
1118 | |
|
|
1119 | #endif |
|
|
1120 | |
|
|
1121 | #if EV_MULTIPLICITY |
|
|
1122 | struct ev_loop * |
|
|
1123 | ev_default_loop_init (unsigned int flags) |
|
|
1124 | #else |
|
|
1125 | int |
|
|
1126 | ev_default_loop (unsigned int flags) |
|
|
1127 | #endif |
|
|
1128 | { |
|
|
1129 | if (sigpipe [0] == sigpipe [1]) |
|
|
1130 | if (pipe (sigpipe)) |
|
|
1131 | return 0; |
|
|
1132 | |
|
|
1133 | if (!ev_default_loop_ptr) |
|
|
1134 | { |
|
|
1135 | #if EV_MULTIPLICITY |
|
|
1136 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1137 | #else |
|
|
1138 | ev_default_loop_ptr = 1; |
|
|
1139 | #endif |
|
|
1140 | |
|
|
1141 | loop_init (EV_A_ flags); |
|
|
1142 | |
|
|
1143 | if (ev_backend (EV_A)) |
479 | { |
1144 | { |
480 | ev_watcher_init (&sigev, sigcb); |
|
|
481 | siginit (); |
1145 | siginit (EV_A); |
482 | |
1146 | |
|
|
1147 | #ifndef _WIN32 |
483 | ev_signal_init (&childev, childcb, SIGCHLD); |
1148 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1149 | ev_set_priority (&childev, EV_MAXPRI); |
484 | ev_signal_start (&childev); |
1150 | ev_signal_start (EV_A_ &childev); |
|
|
1151 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1152 | #endif |
485 | } |
1153 | } |
|
|
1154 | else |
|
|
1155 | ev_default_loop_ptr = 0; |
486 | } |
1156 | } |
487 | |
1157 | |
488 | return ev_method; |
1158 | return ev_default_loop_ptr; |
|
|
1159 | } |
|
|
1160 | |
|
|
1161 | void |
|
|
1162 | ev_default_destroy (void) |
|
|
1163 | { |
|
|
1164 | #if EV_MULTIPLICITY |
|
|
1165 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1166 | #endif |
|
|
1167 | |
|
|
1168 | #ifndef _WIN32 |
|
|
1169 | ev_ref (EV_A); /* child watcher */ |
|
|
1170 | ev_signal_stop (EV_A_ &childev); |
|
|
1171 | #endif |
|
|
1172 | |
|
|
1173 | ev_ref (EV_A); /* signal watcher */ |
|
|
1174 | ev_io_stop (EV_A_ &sigev); |
|
|
1175 | |
|
|
1176 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1177 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1178 | |
|
|
1179 | loop_destroy (EV_A); |
|
|
1180 | } |
|
|
1181 | |
|
|
1182 | void |
|
|
1183 | ev_default_fork (void) |
|
|
1184 | { |
|
|
1185 | #if EV_MULTIPLICITY |
|
|
1186 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1187 | #endif |
|
|
1188 | |
|
|
1189 | if (backend) |
|
|
1190 | postfork = 1; |
489 | } |
1191 | } |
490 | |
1192 | |
491 | /*****************************************************************************/ |
1193 | /*****************************************************************************/ |
492 | |
1194 | |
493 | void |
1195 | void |
494 | ev_prefork (void) |
1196 | ev_invoke (EV_P_ void *w, int revents) |
495 | { |
1197 | { |
496 | /* nop */ |
1198 | EV_CB_INVOKE ((W)w, revents); |
497 | } |
1199 | } |
498 | |
1200 | |
499 | void |
1201 | void inline_speed |
500 | ev_postfork_parent (void) |
|
|
501 | { |
|
|
502 | /* nop */ |
|
|
503 | } |
|
|
504 | |
|
|
505 | void |
|
|
506 | ev_postfork_child (void) |
|
|
507 | { |
|
|
508 | #if EV_USE_EPOLL |
|
|
509 | if (ev_method == EVMETHOD_EPOLL) |
|
|
510 | epoll_postfork_child (); |
|
|
511 | #endif |
|
|
512 | |
|
|
513 | ev_io_stop (&sigev); |
|
|
514 | close (sigpipe [0]); |
|
|
515 | close (sigpipe [1]); |
|
|
516 | pipe (sigpipe); |
|
|
517 | siginit (); |
|
|
518 | } |
|
|
519 | |
|
|
520 | /*****************************************************************************/ |
|
|
521 | |
|
|
522 | static void |
|
|
523 | call_pending (void) |
1202 | call_pending (EV_P) |
524 | { |
1203 | { |
|
|
1204 | int pri; |
|
|
1205 | |
|
|
1206 | for (pri = NUMPRI; pri--; ) |
525 | while (pendingcnt) |
1207 | while (pendingcnt [pri]) |
526 | { |
1208 | { |
527 | ANPENDING *p = pendings + --pendingcnt; |
1209 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
528 | |
1210 | |
529 | if (p->w) |
1211 | if (expect_true (p->w)) |
530 | { |
1212 | { |
|
|
1213 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1214 | |
531 | p->w->pending = 0; |
1215 | p->w->pending = 0; |
532 | p->w->cb (p->w, p->events); |
1216 | EV_CB_INVOKE (p->w, p->events); |
533 | } |
1217 | } |
534 | } |
1218 | } |
535 | } |
1219 | } |
536 | |
1220 | |
537 | static void |
1221 | void inline_size |
538 | timers_reify (void) |
1222 | timers_reify (EV_P) |
539 | { |
1223 | { |
540 | while (timercnt && timers [0]->at <= now) |
1224 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
541 | { |
1225 | { |
542 | struct ev_timer *w = timers [0]; |
1226 | ev_timer *w = (ev_timer *)timers [0]; |
|
|
1227 | |
|
|
1228 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
543 | |
1229 | |
544 | /* first reschedule or stop timer */ |
1230 | /* first reschedule or stop timer */ |
545 | if (w->repeat) |
1231 | if (w->repeat) |
546 | { |
1232 | { |
547 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1233 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1234 | |
548 | w->at = now + w->repeat; |
1235 | ((WT)w)->at += w->repeat; |
|
|
1236 | if (((WT)w)->at < mn_now) |
|
|
1237 | ((WT)w)->at = mn_now; |
|
|
1238 | |
549 | downheap ((WT *)timers, timercnt, 0); |
1239 | downheap (timers, timercnt, 0); |
550 | } |
1240 | } |
551 | else |
1241 | else |
552 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1242 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
553 | |
1243 | |
554 | event ((W)w, EV_TIMEOUT); |
1244 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
555 | } |
1245 | } |
556 | } |
1246 | } |
557 | |
1247 | |
558 | static void |
1248 | #if EV_PERIODIC_ENABLE |
|
|
1249 | void inline_size |
559 | periodics_reify (void) |
1250 | periodics_reify (EV_P) |
560 | { |
1251 | { |
561 | while (periodiccnt && periodics [0]->at <= ev_now) |
1252 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
562 | { |
1253 | { |
563 | struct ev_periodic *w = periodics [0]; |
1254 | ev_periodic *w = (ev_periodic *)periodics [0]; |
|
|
1255 | |
|
|
1256 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
564 | |
1257 | |
565 | /* first reschedule or stop timer */ |
1258 | /* first reschedule or stop timer */ |
566 | if (w->interval) |
1259 | if (w->reschedule_cb) |
567 | { |
1260 | { |
|
|
1261 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
|
|
1262 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1263 | downheap (periodics, periodiccnt, 0); |
|
|
1264 | } |
|
|
1265 | else if (w->interval) |
|
|
1266 | { |
568 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1267 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1268 | if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval; |
569 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
1269 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
570 | downheap ((WT *)periodics, periodiccnt, 0); |
1270 | downheap (periodics, periodiccnt, 0); |
571 | } |
1271 | } |
572 | else |
1272 | else |
573 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1273 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
574 | |
1274 | |
575 | event ((W)w, EV_PERIODIC); |
1275 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
576 | } |
1276 | } |
577 | } |
1277 | } |
578 | |
1278 | |
579 | static void |
1279 | static void noinline |
580 | periodics_reschedule (ev_tstamp diff) |
1280 | periodics_reschedule (EV_P) |
581 | { |
1281 | { |
582 | int i; |
1282 | int i; |
583 | |
1283 | |
584 | /* adjust periodics after time jump */ |
1284 | /* adjust periodics after time jump */ |
585 | for (i = 0; i < periodiccnt; ++i) |
1285 | for (i = 0; i < periodiccnt; ++i) |
586 | { |
1286 | { |
587 | struct ev_periodic *w = periodics [i]; |
1287 | ev_periodic *w = (ev_periodic *)periodics [i]; |
588 | |
1288 | |
|
|
1289 | if (w->reschedule_cb) |
|
|
1290 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
589 | if (w->interval) |
1291 | else if (w->interval) |
|
|
1292 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1293 | } |
|
|
1294 | |
|
|
1295 | /* now rebuild the heap */ |
|
|
1296 | for (i = periodiccnt >> 1; i--; ) |
|
|
1297 | downheap (periodics, periodiccnt, i); |
|
|
1298 | } |
|
|
1299 | #endif |
|
|
1300 | |
|
|
1301 | #if EV_IDLE_ENABLE |
|
|
1302 | void inline_size |
|
|
1303 | idle_reify (EV_P) |
|
|
1304 | { |
|
|
1305 | if (expect_false (idleall)) |
|
|
1306 | { |
|
|
1307 | int pri; |
|
|
1308 | |
|
|
1309 | for (pri = NUMPRI; pri--; ) |
590 | { |
1310 | { |
591 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1311 | if (pendingcnt [pri]) |
|
|
1312 | break; |
592 | |
1313 | |
593 | if (fabs (diff) >= 1e-4) |
1314 | if (idlecnt [pri]) |
594 | { |
1315 | { |
595 | ev_periodic_stop (w); |
1316 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
596 | ev_periodic_start (w); |
1317 | break; |
597 | |
|
|
598 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
599 | } |
1318 | } |
600 | } |
1319 | } |
601 | } |
1320 | } |
602 | } |
1321 | } |
|
|
1322 | #endif |
603 | |
1323 | |
604 | static void |
1324 | void inline_speed |
605 | time_update (void) |
1325 | time_update (EV_P_ ev_tstamp max_block) |
606 | { |
1326 | { |
607 | int i; |
1327 | int i; |
608 | |
1328 | |
609 | ev_now = ev_time (); |
1329 | #if EV_USE_MONOTONIC |
610 | |
|
|
611 | if (have_monotonic) |
1330 | if (expect_true (have_monotonic)) |
612 | { |
1331 | { |
613 | ev_tstamp odiff = diff; |
1332 | ev_tstamp odiff = rtmn_diff; |
614 | |
1333 | |
615 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1334 | mn_now = get_clock (); |
|
|
1335 | |
|
|
1336 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1337 | /* interpolate in the meantime */ |
|
|
1338 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
616 | { |
1339 | { |
617 | now = get_clock (); |
1340 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1341 | return; |
|
|
1342 | } |
|
|
1343 | |
|
|
1344 | now_floor = mn_now; |
|
|
1345 | ev_rt_now = ev_time (); |
|
|
1346 | |
|
|
1347 | /* loop a few times, before making important decisions. |
|
|
1348 | * on the choice of "4": one iteration isn't enough, |
|
|
1349 | * in case we get preempted during the calls to |
|
|
1350 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1351 | * to succeed in that case, though. and looping a few more times |
|
|
1352 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1353 | * in the unlikely event of having been preempted here. |
|
|
1354 | */ |
|
|
1355 | for (i = 4; --i; ) |
|
|
1356 | { |
618 | diff = ev_now - now; |
1357 | rtmn_diff = ev_rt_now - mn_now; |
619 | |
1358 | |
620 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1359 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
621 | return; /* all is well */ |
1360 | return; /* all is well */ |
622 | |
1361 | |
623 | ev_now = ev_time (); |
1362 | ev_rt_now = ev_time (); |
|
|
1363 | mn_now = get_clock (); |
|
|
1364 | now_floor = mn_now; |
624 | } |
1365 | } |
625 | |
1366 | |
|
|
1367 | # if EV_PERIODIC_ENABLE |
626 | periodics_reschedule (diff - odiff); |
1368 | periodics_reschedule (EV_A); |
|
|
1369 | # endif |
627 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1370 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1371 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
628 | } |
1372 | } |
629 | else |
1373 | else |
|
|
1374 | #endif |
630 | { |
1375 | { |
631 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1376 | ev_rt_now = ev_time (); |
|
|
1377 | |
|
|
1378 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
632 | { |
1379 | { |
|
|
1380 | #if EV_PERIODIC_ENABLE |
633 | periodics_reschedule (ev_now - now); |
1381 | periodics_reschedule (EV_A); |
634 | |
1382 | #endif |
635 | /* adjust timers. this is easy, as the offset is the same for all */ |
1383 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
636 | for (i = 0; i < timercnt; ++i) |
1384 | for (i = 0; i < timercnt; ++i) |
637 | timers [i]->at += diff; |
1385 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
638 | } |
1386 | } |
639 | |
1387 | |
640 | now = ev_now; |
1388 | mn_now = ev_rt_now; |
641 | } |
1389 | } |
642 | } |
1390 | } |
643 | |
1391 | |
644 | int ev_loop_done; |
1392 | void |
|
|
1393 | ev_ref (EV_P) |
|
|
1394 | { |
|
|
1395 | ++activecnt; |
|
|
1396 | } |
645 | |
1397 | |
|
|
1398 | void |
|
|
1399 | ev_unref (EV_P) |
|
|
1400 | { |
|
|
1401 | --activecnt; |
|
|
1402 | } |
|
|
1403 | |
|
|
1404 | static int loop_done; |
|
|
1405 | |
|
|
1406 | void |
646 | void ev_loop (int flags) |
1407 | ev_loop (EV_P_ int flags) |
647 | { |
1408 | { |
648 | double block; |
|
|
649 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1409 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
|
|
1410 | ? EVUNLOOP_ONE |
|
|
1411 | : EVUNLOOP_CANCEL; |
|
|
1412 | |
|
|
1413 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
650 | |
1414 | |
651 | do |
1415 | do |
652 | { |
1416 | { |
|
|
1417 | #ifndef _WIN32 |
|
|
1418 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1419 | if (expect_false (getpid () != curpid)) |
|
|
1420 | { |
|
|
1421 | curpid = getpid (); |
|
|
1422 | postfork = 1; |
|
|
1423 | } |
|
|
1424 | #endif |
|
|
1425 | |
|
|
1426 | #if EV_FORK_ENABLE |
|
|
1427 | /* we might have forked, so queue fork handlers */ |
|
|
1428 | if (expect_false (postfork)) |
|
|
1429 | if (forkcnt) |
|
|
1430 | { |
|
|
1431 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1432 | call_pending (EV_A); |
|
|
1433 | } |
|
|
1434 | #endif |
|
|
1435 | |
653 | /* queue check watchers (and execute them) */ |
1436 | /* queue prepare watchers (and execute them) */ |
654 | if (preparecnt) |
1437 | if (expect_false (preparecnt)) |
655 | { |
1438 | { |
656 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1439 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
657 | call_pending (); |
1440 | call_pending (EV_A); |
658 | } |
1441 | } |
659 | |
1442 | |
|
|
1443 | if (expect_false (!activecnt)) |
|
|
1444 | break; |
|
|
1445 | |
|
|
1446 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1447 | if (expect_false (postfork)) |
|
|
1448 | loop_fork (EV_A); |
|
|
1449 | |
660 | /* update fd-related kernel structures */ |
1450 | /* update fd-related kernel structures */ |
661 | fd_reify (); |
1451 | fd_reify (EV_A); |
662 | |
1452 | |
663 | /* calculate blocking time */ |
1453 | /* calculate blocking time */ |
|
|
1454 | { |
|
|
1455 | ev_tstamp block; |
664 | |
1456 | |
665 | /* we only need this for !monotonic clockor timers, but as we basically |
1457 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
666 | always have timers, we just calculate it always */ |
1458 | block = 0.; /* do not block at all */ |
667 | ev_now = ev_time (); |
|
|
668 | |
|
|
669 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
670 | block = 0.; |
|
|
671 | else |
1459 | else |
672 | { |
1460 | { |
|
|
1461 | /* update time to cancel out callback processing overhead */ |
|
|
1462 | time_update (EV_A_ 1e100); |
|
|
1463 | |
673 | block = MAX_BLOCKTIME; |
1464 | block = MAX_BLOCKTIME; |
674 | |
1465 | |
675 | if (timercnt) |
1466 | if (timercnt) |
676 | { |
1467 | { |
677 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1468 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
678 | if (block > to) block = to; |
1469 | if (block > to) block = to; |
679 | } |
1470 | } |
680 | |
1471 | |
|
|
1472 | #if EV_PERIODIC_ENABLE |
681 | if (periodiccnt) |
1473 | if (periodiccnt) |
682 | { |
1474 | { |
683 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1475 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
684 | if (block > to) block = to; |
1476 | if (block > to) block = to; |
685 | } |
1477 | } |
|
|
1478 | #endif |
686 | |
1479 | |
687 | if (block < 0.) block = 0.; |
1480 | if (expect_false (block < 0.)) block = 0.; |
688 | } |
1481 | } |
689 | |
1482 | |
690 | method_poll (block); |
1483 | ++loop_count; |
|
|
1484 | backend_poll (EV_A_ block); |
691 | |
1485 | |
692 | /* update ev_now, do magic */ |
1486 | /* update ev_rt_now, do magic */ |
693 | time_update (); |
1487 | time_update (EV_A_ block); |
|
|
1488 | } |
694 | |
1489 | |
695 | /* queue pending timers and reschedule them */ |
1490 | /* queue pending timers and reschedule them */ |
696 | timers_reify (); /* relative timers called last */ |
1491 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1492 | #if EV_PERIODIC_ENABLE |
697 | periodics_reify (); /* absolute timers called first */ |
1493 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1494 | #endif |
698 | |
1495 | |
|
|
1496 | #if EV_IDLE_ENABLE |
699 | /* queue idle watchers unless io or timers are pending */ |
1497 | /* queue idle watchers unless other events are pending */ |
700 | if (!pendingcnt) |
1498 | idle_reify (EV_A); |
701 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1499 | #endif |
702 | |
1500 | |
703 | /* queue check watchers, to be executed first */ |
1501 | /* queue check watchers, to be executed first */ |
704 | if (checkcnt) |
1502 | if (expect_false (checkcnt)) |
705 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1503 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
706 | |
1504 | |
707 | call_pending (); |
1505 | call_pending (EV_A); |
708 | } |
|
|
709 | while (!ev_loop_done); |
|
|
710 | |
1506 | |
711 | if (ev_loop_done != 2) |
1507 | } |
|
|
1508 | while (expect_true (activecnt && !loop_done)); |
|
|
1509 | |
|
|
1510 | if (loop_done == EVUNLOOP_ONE) |
|
|
1511 | loop_done = EVUNLOOP_CANCEL; |
|
|
1512 | } |
|
|
1513 | |
|
|
1514 | void |
|
|
1515 | ev_unloop (EV_P_ int how) |
|
|
1516 | { |
712 | ev_loop_done = 0; |
1517 | loop_done = how; |
713 | } |
1518 | } |
714 | |
1519 | |
715 | /*****************************************************************************/ |
1520 | /*****************************************************************************/ |
716 | |
1521 | |
717 | static void |
1522 | void inline_size |
718 | wlist_add (WL *head, WL elem) |
1523 | wlist_add (WL *head, WL elem) |
719 | { |
1524 | { |
720 | elem->next = *head; |
1525 | elem->next = *head; |
721 | *head = elem; |
1526 | *head = elem; |
722 | } |
1527 | } |
723 | |
1528 | |
724 | static void |
1529 | void inline_size |
725 | wlist_del (WL *head, WL elem) |
1530 | wlist_del (WL *head, WL elem) |
726 | { |
1531 | { |
727 | while (*head) |
1532 | while (*head) |
728 | { |
1533 | { |
729 | if (*head == elem) |
1534 | if (*head == elem) |
… | |
… | |
734 | |
1539 | |
735 | head = &(*head)->next; |
1540 | head = &(*head)->next; |
736 | } |
1541 | } |
737 | } |
1542 | } |
738 | |
1543 | |
739 | static void |
1544 | void inline_speed |
740 | ev_clear_pending (W w) |
1545 | clear_pending (EV_P_ W w) |
741 | { |
1546 | { |
742 | if (w->pending) |
1547 | if (w->pending) |
743 | { |
1548 | { |
744 | pendings [w->pending - 1].w = 0; |
1549 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
745 | w->pending = 0; |
1550 | w->pending = 0; |
746 | } |
1551 | } |
747 | } |
1552 | } |
748 | |
1553 | |
749 | static void |
1554 | int |
|
|
1555 | ev_clear_pending (EV_P_ void *w) |
|
|
1556 | { |
|
|
1557 | W w_ = (W)w; |
|
|
1558 | int pending = w_->pending; |
|
|
1559 | |
|
|
1560 | if (expect_true (pending)) |
|
|
1561 | { |
|
|
1562 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1563 | w_->pending = 0; |
|
|
1564 | p->w = 0; |
|
|
1565 | return p->events; |
|
|
1566 | } |
|
|
1567 | else |
|
|
1568 | return 0; |
|
|
1569 | } |
|
|
1570 | |
|
|
1571 | void inline_size |
|
|
1572 | pri_adjust (EV_P_ W w) |
|
|
1573 | { |
|
|
1574 | int pri = w->priority; |
|
|
1575 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1576 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1577 | w->priority = pri; |
|
|
1578 | } |
|
|
1579 | |
|
|
1580 | void inline_speed |
750 | ev_start (W w, int active) |
1581 | ev_start (EV_P_ W w, int active) |
751 | { |
1582 | { |
|
|
1583 | pri_adjust (EV_A_ w); |
752 | w->active = active; |
1584 | w->active = active; |
|
|
1585 | ev_ref (EV_A); |
753 | } |
1586 | } |
754 | |
1587 | |
755 | static void |
1588 | void inline_size |
756 | ev_stop (W w) |
1589 | ev_stop (EV_P_ W w) |
757 | { |
1590 | { |
|
|
1591 | ev_unref (EV_A); |
758 | w->active = 0; |
1592 | w->active = 0; |
759 | } |
1593 | } |
760 | |
1594 | |
761 | /*****************************************************************************/ |
1595 | /*****************************************************************************/ |
762 | |
1596 | |
763 | void |
1597 | void noinline |
764 | ev_io_start (struct ev_io *w) |
1598 | ev_io_start (EV_P_ ev_io *w) |
765 | { |
1599 | { |
766 | if (ev_is_active (w)) |
|
|
767 | return; |
|
|
768 | |
|
|
769 | int fd = w->fd; |
1600 | int fd = w->fd; |
770 | |
1601 | |
|
|
1602 | if (expect_false (ev_is_active (w))) |
|
|
1603 | return; |
|
|
1604 | |
771 | assert (("ev_io_start called with negative fd", fd >= 0)); |
1605 | assert (("ev_io_start called with negative fd", fd >= 0)); |
772 | |
1606 | |
773 | ev_start ((W)w, 1); |
1607 | ev_start (EV_A_ (W)w, 1); |
774 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1608 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
775 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1609 | wlist_add (&anfds[fd].head, (WL)w); |
776 | |
1610 | |
777 | fd_change (fd); |
1611 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
|
|
1612 | w->events &= ~EV_IOFDSET; |
778 | } |
1613 | } |
779 | |
1614 | |
780 | void |
1615 | void noinline |
781 | ev_io_stop (struct ev_io *w) |
1616 | ev_io_stop (EV_P_ ev_io *w) |
782 | { |
1617 | { |
783 | ev_clear_pending ((W)w); |
1618 | clear_pending (EV_A_ (W)w); |
784 | if (!ev_is_active (w)) |
1619 | if (expect_false (!ev_is_active (w))) |
785 | return; |
1620 | return; |
786 | |
1621 | |
|
|
1622 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1623 | |
787 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1624 | wlist_del (&anfds[w->fd].head, (WL)w); |
788 | ev_stop ((W)w); |
1625 | ev_stop (EV_A_ (W)w); |
789 | |
1626 | |
790 | fd_change (w->fd); |
1627 | fd_change (EV_A_ w->fd, 1); |
791 | } |
1628 | } |
792 | |
1629 | |
793 | void |
1630 | void noinline |
794 | ev_timer_start (struct ev_timer *w) |
1631 | ev_timer_start (EV_P_ ev_timer *w) |
795 | { |
1632 | { |
796 | if (ev_is_active (w)) |
1633 | if (expect_false (ev_is_active (w))) |
797 | return; |
1634 | return; |
798 | |
1635 | |
799 | w->at += now; |
1636 | ((WT)w)->at += mn_now; |
800 | |
1637 | |
801 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
1638 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
802 | |
1639 | |
803 | ev_start ((W)w, ++timercnt); |
1640 | ev_start (EV_A_ (W)w, ++timercnt); |
804 | array_needsize (timers, timermax, timercnt, ); |
1641 | array_needsize (WT, timers, timermax, timercnt, EMPTY2); |
805 | timers [timercnt - 1] = w; |
1642 | timers [timercnt - 1] = (WT)w; |
806 | upheap ((WT *)timers, timercnt - 1); |
1643 | upheap (timers, timercnt - 1); |
807 | } |
|
|
808 | |
1644 | |
809 | void |
1645 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
|
|
1646 | } |
|
|
1647 | |
|
|
1648 | void noinline |
810 | ev_timer_stop (struct ev_timer *w) |
1649 | ev_timer_stop (EV_P_ ev_timer *w) |
811 | { |
1650 | { |
812 | ev_clear_pending ((W)w); |
1651 | clear_pending (EV_A_ (W)w); |
813 | if (!ev_is_active (w)) |
1652 | if (expect_false (!ev_is_active (w))) |
814 | return; |
1653 | return; |
815 | |
1654 | |
816 | if (w->active < timercnt--) |
1655 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); |
|
|
1656 | |
|
|
1657 | { |
|
|
1658 | int active = ((W)w)->active; |
|
|
1659 | |
|
|
1660 | if (expect_true (--active < --timercnt)) |
817 | { |
1661 | { |
818 | timers [w->active - 1] = timers [timercnt]; |
1662 | timers [active] = timers [timercnt]; |
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
1663 | adjustheap (timers, timercnt, active); |
820 | } |
1664 | } |
|
|
1665 | } |
821 | |
1666 | |
822 | w->at = w->repeat; |
1667 | ((WT)w)->at -= mn_now; |
823 | |
1668 | |
824 | ev_stop ((W)w); |
1669 | ev_stop (EV_A_ (W)w); |
825 | } |
1670 | } |
826 | |
1671 | |
827 | void |
1672 | void noinline |
828 | ev_timer_again (struct ev_timer *w) |
1673 | ev_timer_again (EV_P_ ev_timer *w) |
829 | { |
1674 | { |
830 | if (ev_is_active (w)) |
1675 | if (ev_is_active (w)) |
831 | { |
1676 | { |
832 | if (w->repeat) |
1677 | if (w->repeat) |
833 | { |
1678 | { |
834 | w->at = now + w->repeat; |
1679 | ((WT)w)->at = mn_now + w->repeat; |
835 | downheap ((WT *)timers, timercnt, w->active - 1); |
1680 | adjustheap (timers, timercnt, ((W)w)->active - 1); |
836 | } |
1681 | } |
837 | else |
1682 | else |
838 | ev_timer_stop (w); |
1683 | ev_timer_stop (EV_A_ w); |
839 | } |
1684 | } |
840 | else if (w->repeat) |
1685 | else if (w->repeat) |
|
|
1686 | { |
|
|
1687 | w->at = w->repeat; |
841 | ev_timer_start (w); |
1688 | ev_timer_start (EV_A_ w); |
|
|
1689 | } |
842 | } |
1690 | } |
843 | |
1691 | |
844 | void |
1692 | #if EV_PERIODIC_ENABLE |
|
|
1693 | void noinline |
845 | ev_periodic_start (struct ev_periodic *w) |
1694 | ev_periodic_start (EV_P_ ev_periodic *w) |
846 | { |
1695 | { |
847 | if (ev_is_active (w)) |
1696 | if (expect_false (ev_is_active (w))) |
848 | return; |
1697 | return; |
849 | |
1698 | |
|
|
1699 | if (w->reschedule_cb) |
|
|
1700 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1701 | else if (w->interval) |
|
|
1702 | { |
850 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
1703 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
851 | |
|
|
852 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1704 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
853 | if (w->interval) |
|
|
854 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1705 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1706 | } |
|
|
1707 | else |
|
|
1708 | ((WT)w)->at = w->offset; |
855 | |
1709 | |
856 | ev_start ((W)w, ++periodiccnt); |
1710 | ev_start (EV_A_ (W)w, ++periodiccnt); |
857 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1711 | array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); |
858 | periodics [periodiccnt - 1] = w; |
1712 | periodics [periodiccnt - 1] = (WT)w; |
859 | upheap ((WT *)periodics, periodiccnt - 1); |
1713 | upheap (periodics, periodiccnt - 1); |
860 | } |
|
|
861 | |
1714 | |
862 | void |
1715 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
|
|
1716 | } |
|
|
1717 | |
|
|
1718 | void noinline |
863 | ev_periodic_stop (struct ev_periodic *w) |
1719 | ev_periodic_stop (EV_P_ ev_periodic *w) |
864 | { |
1720 | { |
865 | ev_clear_pending ((W)w); |
1721 | clear_pending (EV_A_ (W)w); |
866 | if (!ev_is_active (w)) |
1722 | if (expect_false (!ev_is_active (w))) |
867 | return; |
1723 | return; |
868 | |
1724 | |
869 | if (w->active < periodiccnt--) |
1725 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); |
|
|
1726 | |
|
|
1727 | { |
|
|
1728 | int active = ((W)w)->active; |
|
|
1729 | |
|
|
1730 | if (expect_true (--active < --periodiccnt)) |
870 | { |
1731 | { |
871 | periodics [w->active - 1] = periodics [periodiccnt]; |
1732 | periodics [active] = periodics [periodiccnt]; |
872 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1733 | adjustheap (periodics, periodiccnt, active); |
873 | } |
1734 | } |
|
|
1735 | } |
874 | |
1736 | |
875 | ev_stop ((W)w); |
1737 | ev_stop (EV_A_ (W)w); |
876 | } |
1738 | } |
877 | |
1739 | |
878 | void |
1740 | void noinline |
|
|
1741 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1742 | { |
|
|
1743 | /* TODO: use adjustheap and recalculation */ |
|
|
1744 | ev_periodic_stop (EV_A_ w); |
|
|
1745 | ev_periodic_start (EV_A_ w); |
|
|
1746 | } |
|
|
1747 | #endif |
|
|
1748 | |
|
|
1749 | #ifndef SA_RESTART |
|
|
1750 | # define SA_RESTART 0 |
|
|
1751 | #endif |
|
|
1752 | |
|
|
1753 | void noinline |
879 | ev_signal_start (struct ev_signal *w) |
1754 | ev_signal_start (EV_P_ ev_signal *w) |
880 | { |
1755 | { |
|
|
1756 | #if EV_MULTIPLICITY |
|
|
1757 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1758 | #endif |
881 | if (ev_is_active (w)) |
1759 | if (expect_false (ev_is_active (w))) |
882 | return; |
1760 | return; |
883 | |
1761 | |
884 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
1762 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
885 | |
1763 | |
886 | ev_start ((W)w, 1); |
1764 | { |
|
|
1765 | #ifndef _WIN32 |
|
|
1766 | sigset_t full, prev; |
|
|
1767 | sigfillset (&full); |
|
|
1768 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
1769 | #endif |
|
|
1770 | |
887 | array_needsize (signals, signalmax, w->signum, signals_init); |
1771 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1772 | |
|
|
1773 | #ifndef _WIN32 |
|
|
1774 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
1775 | #endif |
|
|
1776 | } |
|
|
1777 | |
|
|
1778 | ev_start (EV_A_ (W)w, 1); |
888 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1779 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
889 | |
1780 | |
890 | if (!w->next) |
1781 | if (!((WL)w)->next) |
891 | { |
1782 | { |
|
|
1783 | #if _WIN32 |
|
|
1784 | signal (w->signum, sighandler); |
|
|
1785 | #else |
892 | struct sigaction sa; |
1786 | struct sigaction sa; |
893 | sa.sa_handler = sighandler; |
1787 | sa.sa_handler = sighandler; |
894 | sigfillset (&sa.sa_mask); |
1788 | sigfillset (&sa.sa_mask); |
895 | sa.sa_flags = 0; |
1789 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
896 | sigaction (w->signum, &sa, 0); |
1790 | sigaction (w->signum, &sa, 0); |
|
|
1791 | #endif |
897 | } |
1792 | } |
898 | } |
1793 | } |
899 | |
1794 | |
900 | void |
1795 | void noinline |
901 | ev_signal_stop (struct ev_signal *w) |
1796 | ev_signal_stop (EV_P_ ev_signal *w) |
902 | { |
1797 | { |
903 | ev_clear_pending ((W)w); |
1798 | clear_pending (EV_A_ (W)w); |
904 | if (!ev_is_active (w)) |
1799 | if (expect_false (!ev_is_active (w))) |
905 | return; |
1800 | return; |
906 | |
1801 | |
907 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1802 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
908 | ev_stop ((W)w); |
1803 | ev_stop (EV_A_ (W)w); |
909 | |
1804 | |
910 | if (!signals [w->signum - 1].head) |
1805 | if (!signals [w->signum - 1].head) |
911 | signal (w->signum, SIG_DFL); |
1806 | signal (w->signum, SIG_DFL); |
912 | } |
1807 | } |
913 | |
1808 | |
914 | void |
1809 | void |
915 | ev_idle_start (struct ev_idle *w) |
1810 | ev_child_start (EV_P_ ev_child *w) |
916 | { |
1811 | { |
|
|
1812 | #if EV_MULTIPLICITY |
|
|
1813 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1814 | #endif |
917 | if (ev_is_active (w)) |
1815 | if (expect_false (ev_is_active (w))) |
918 | return; |
1816 | return; |
919 | |
1817 | |
920 | ev_start ((W)w, ++idlecnt); |
1818 | ev_start (EV_A_ (W)w, 1); |
921 | array_needsize (idles, idlemax, idlecnt, ); |
1819 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
922 | idles [idlecnt - 1] = w; |
|
|
923 | } |
1820 | } |
924 | |
1821 | |
925 | void |
1822 | void |
926 | ev_idle_stop (struct ev_idle *w) |
1823 | ev_child_stop (EV_P_ ev_child *w) |
927 | { |
1824 | { |
928 | ev_clear_pending ((W)w); |
1825 | clear_pending (EV_A_ (W)w); |
929 | if (ev_is_active (w)) |
1826 | if (expect_false (!ev_is_active (w))) |
930 | return; |
1827 | return; |
931 | |
1828 | |
932 | idles [w->active - 1] = idles [--idlecnt]; |
1829 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
933 | ev_stop ((W)w); |
1830 | ev_stop (EV_A_ (W)w); |
934 | } |
1831 | } |
935 | |
1832 | |
|
|
1833 | #if EV_STAT_ENABLE |
|
|
1834 | |
|
|
1835 | # ifdef _WIN32 |
|
|
1836 | # undef lstat |
|
|
1837 | # define lstat(a,b) _stati64 (a,b) |
|
|
1838 | # endif |
|
|
1839 | |
|
|
1840 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
1841 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
1842 | |
|
|
1843 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
1844 | |
|
|
1845 | #if EV_USE_INOTIFY |
|
|
1846 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
1847 | |
|
|
1848 | static void noinline |
|
|
1849 | infy_add (EV_P_ ev_stat *w) |
|
|
1850 | { |
|
|
1851 | 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); |
|
|
1852 | |
|
|
1853 | if (w->wd < 0) |
|
|
1854 | { |
|
|
1855 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
1856 | |
|
|
1857 | /* monitor some parent directory for speedup hints */ |
|
|
1858 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
1859 | { |
|
|
1860 | char path [4096]; |
|
|
1861 | strcpy (path, w->path); |
|
|
1862 | |
|
|
1863 | do |
|
|
1864 | { |
|
|
1865 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
1866 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
1867 | |
|
|
1868 | char *pend = strrchr (path, '/'); |
|
|
1869 | |
|
|
1870 | if (!pend) |
|
|
1871 | break; /* whoops, no '/', complain to your admin */ |
|
|
1872 | |
|
|
1873 | *pend = 0; |
|
|
1874 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
1875 | } |
|
|
1876 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
1877 | } |
|
|
1878 | } |
|
|
1879 | else |
|
|
1880 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
1881 | |
|
|
1882 | if (w->wd >= 0) |
|
|
1883 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
1884 | } |
|
|
1885 | |
|
|
1886 | static void noinline |
|
|
1887 | infy_del (EV_P_ ev_stat *w) |
|
|
1888 | { |
|
|
1889 | int slot; |
|
|
1890 | int wd = w->wd; |
|
|
1891 | |
|
|
1892 | if (wd < 0) |
|
|
1893 | return; |
|
|
1894 | |
|
|
1895 | w->wd = -2; |
|
|
1896 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
1897 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
1898 | |
|
|
1899 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
1900 | inotify_rm_watch (fs_fd, wd); |
|
|
1901 | } |
|
|
1902 | |
|
|
1903 | static void noinline |
|
|
1904 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
1905 | { |
|
|
1906 | if (slot < 0) |
|
|
1907 | /* overflow, need to check for all hahs slots */ |
|
|
1908 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1909 | infy_wd (EV_A_ slot, wd, ev); |
|
|
1910 | else |
|
|
1911 | { |
|
|
1912 | WL w_; |
|
|
1913 | |
|
|
1914 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
1915 | { |
|
|
1916 | ev_stat *w = (ev_stat *)w_; |
|
|
1917 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
1918 | |
|
|
1919 | if (w->wd == wd || wd == -1) |
|
|
1920 | { |
|
|
1921 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
1922 | { |
|
|
1923 | w->wd = -1; |
|
|
1924 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1925 | } |
|
|
1926 | |
|
|
1927 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
1928 | } |
|
|
1929 | } |
|
|
1930 | } |
|
|
1931 | } |
|
|
1932 | |
|
|
1933 | static void |
|
|
1934 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
1935 | { |
|
|
1936 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
1937 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
1938 | int ofs; |
|
|
1939 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
1940 | |
|
|
1941 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
1942 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
1943 | } |
|
|
1944 | |
|
|
1945 | void inline_size |
|
|
1946 | infy_init (EV_P) |
|
|
1947 | { |
|
|
1948 | if (fs_fd != -2) |
|
|
1949 | return; |
|
|
1950 | |
|
|
1951 | fs_fd = inotify_init (); |
|
|
1952 | |
|
|
1953 | if (fs_fd >= 0) |
|
|
1954 | { |
|
|
1955 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
1956 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
1957 | ev_io_start (EV_A_ &fs_w); |
|
|
1958 | } |
|
|
1959 | } |
|
|
1960 | |
|
|
1961 | void inline_size |
|
|
1962 | infy_fork (EV_P) |
|
|
1963 | { |
|
|
1964 | int slot; |
|
|
1965 | |
|
|
1966 | if (fs_fd < 0) |
|
|
1967 | return; |
|
|
1968 | |
|
|
1969 | close (fs_fd); |
|
|
1970 | fs_fd = inotify_init (); |
|
|
1971 | |
|
|
1972 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1973 | { |
|
|
1974 | WL w_ = fs_hash [slot].head; |
|
|
1975 | fs_hash [slot].head = 0; |
|
|
1976 | |
|
|
1977 | while (w_) |
|
|
1978 | { |
|
|
1979 | ev_stat *w = (ev_stat *)w_; |
|
|
1980 | w_ = w_->next; /* lets us add this watcher */ |
|
|
1981 | |
|
|
1982 | w->wd = -1; |
|
|
1983 | |
|
|
1984 | if (fs_fd >= 0) |
|
|
1985 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1986 | else |
|
|
1987 | ev_timer_start (EV_A_ &w->timer); |
|
|
1988 | } |
|
|
1989 | |
|
|
1990 | } |
|
|
1991 | } |
|
|
1992 | |
|
|
1993 | #endif |
|
|
1994 | |
936 | void |
1995 | void |
|
|
1996 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
1997 | { |
|
|
1998 | if (lstat (w->path, &w->attr) < 0) |
|
|
1999 | w->attr.st_nlink = 0; |
|
|
2000 | else if (!w->attr.st_nlink) |
|
|
2001 | w->attr.st_nlink = 1; |
|
|
2002 | } |
|
|
2003 | |
|
|
2004 | static void noinline |
|
|
2005 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2006 | { |
|
|
2007 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2008 | |
|
|
2009 | /* we copy this here each the time so that */ |
|
|
2010 | /* prev has the old value when the callback gets invoked */ |
|
|
2011 | w->prev = w->attr; |
|
|
2012 | ev_stat_stat (EV_A_ w); |
|
|
2013 | |
|
|
2014 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2015 | if ( |
|
|
2016 | w->prev.st_dev != w->attr.st_dev |
|
|
2017 | || w->prev.st_ino != w->attr.st_ino |
|
|
2018 | || w->prev.st_mode != w->attr.st_mode |
|
|
2019 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2020 | || w->prev.st_uid != w->attr.st_uid |
|
|
2021 | || w->prev.st_gid != w->attr.st_gid |
|
|
2022 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2023 | || w->prev.st_size != w->attr.st_size |
|
|
2024 | || w->prev.st_atime != w->attr.st_atime |
|
|
2025 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2026 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2027 | ) { |
|
|
2028 | #if EV_USE_INOTIFY |
|
|
2029 | infy_del (EV_A_ w); |
|
|
2030 | infy_add (EV_A_ w); |
|
|
2031 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2032 | #endif |
|
|
2033 | |
|
|
2034 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2035 | } |
|
|
2036 | } |
|
|
2037 | |
|
|
2038 | void |
|
|
2039 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2040 | { |
|
|
2041 | if (expect_false (ev_is_active (w))) |
|
|
2042 | return; |
|
|
2043 | |
|
|
2044 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2045 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2046 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2047 | |
|
|
2048 | ev_stat_stat (EV_A_ w); |
|
|
2049 | |
|
|
2050 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2051 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2052 | |
|
|
2053 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2054 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2055 | |
|
|
2056 | #if EV_USE_INOTIFY |
|
|
2057 | infy_init (EV_A); |
|
|
2058 | |
|
|
2059 | if (fs_fd >= 0) |
|
|
2060 | infy_add (EV_A_ w); |
|
|
2061 | else |
|
|
2062 | #endif |
|
|
2063 | ev_timer_start (EV_A_ &w->timer); |
|
|
2064 | |
|
|
2065 | ev_start (EV_A_ (W)w, 1); |
|
|
2066 | } |
|
|
2067 | |
|
|
2068 | void |
|
|
2069 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2070 | { |
|
|
2071 | clear_pending (EV_A_ (W)w); |
|
|
2072 | if (expect_false (!ev_is_active (w))) |
|
|
2073 | return; |
|
|
2074 | |
|
|
2075 | #if EV_USE_INOTIFY |
|
|
2076 | infy_del (EV_A_ w); |
|
|
2077 | #endif |
|
|
2078 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2079 | |
|
|
2080 | ev_stop (EV_A_ (W)w); |
|
|
2081 | } |
|
|
2082 | #endif |
|
|
2083 | |
|
|
2084 | #if EV_IDLE_ENABLE |
|
|
2085 | void |
|
|
2086 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2087 | { |
|
|
2088 | if (expect_false (ev_is_active (w))) |
|
|
2089 | return; |
|
|
2090 | |
|
|
2091 | pri_adjust (EV_A_ (W)w); |
|
|
2092 | |
|
|
2093 | { |
|
|
2094 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2095 | |
|
|
2096 | ++idleall; |
|
|
2097 | ev_start (EV_A_ (W)w, active); |
|
|
2098 | |
|
|
2099 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2100 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2101 | } |
|
|
2102 | } |
|
|
2103 | |
|
|
2104 | void |
|
|
2105 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2106 | { |
|
|
2107 | clear_pending (EV_A_ (W)w); |
|
|
2108 | if (expect_false (!ev_is_active (w))) |
|
|
2109 | return; |
|
|
2110 | |
|
|
2111 | { |
|
|
2112 | int active = ((W)w)->active; |
|
|
2113 | |
|
|
2114 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2115 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
|
|
2116 | |
|
|
2117 | ev_stop (EV_A_ (W)w); |
|
|
2118 | --idleall; |
|
|
2119 | } |
|
|
2120 | } |
|
|
2121 | #endif |
|
|
2122 | |
|
|
2123 | void |
937 | ev_prepare_start (struct ev_prepare *w) |
2124 | ev_prepare_start (EV_P_ ev_prepare *w) |
938 | { |
2125 | { |
939 | if (ev_is_active (w)) |
2126 | if (expect_false (ev_is_active (w))) |
940 | return; |
2127 | return; |
941 | |
2128 | |
942 | ev_start ((W)w, ++preparecnt); |
2129 | ev_start (EV_A_ (W)w, ++preparecnt); |
943 | array_needsize (prepares, preparemax, preparecnt, ); |
2130 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
944 | prepares [preparecnt - 1] = w; |
2131 | prepares [preparecnt - 1] = w; |
945 | } |
2132 | } |
946 | |
2133 | |
947 | void |
2134 | void |
948 | ev_prepare_stop (struct ev_prepare *w) |
2135 | ev_prepare_stop (EV_P_ ev_prepare *w) |
949 | { |
2136 | { |
950 | ev_clear_pending ((W)w); |
2137 | clear_pending (EV_A_ (W)w); |
951 | if (ev_is_active (w)) |
2138 | if (expect_false (!ev_is_active (w))) |
952 | return; |
2139 | return; |
953 | |
2140 | |
|
|
2141 | { |
|
|
2142 | int active = ((W)w)->active; |
954 | prepares [w->active - 1] = prepares [--preparecnt]; |
2143 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2144 | ((W)prepares [active - 1])->active = active; |
|
|
2145 | } |
|
|
2146 | |
955 | ev_stop ((W)w); |
2147 | ev_stop (EV_A_ (W)w); |
956 | } |
2148 | } |
957 | |
2149 | |
958 | void |
2150 | void |
959 | ev_check_start (struct ev_check *w) |
2151 | ev_check_start (EV_P_ ev_check *w) |
960 | { |
2152 | { |
961 | if (ev_is_active (w)) |
2153 | if (expect_false (ev_is_active (w))) |
962 | return; |
2154 | return; |
963 | |
2155 | |
964 | ev_start ((W)w, ++checkcnt); |
2156 | ev_start (EV_A_ (W)w, ++checkcnt); |
965 | array_needsize (checks, checkmax, checkcnt, ); |
2157 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
966 | checks [checkcnt - 1] = w; |
2158 | checks [checkcnt - 1] = w; |
967 | } |
2159 | } |
968 | |
2160 | |
969 | void |
2161 | void |
970 | ev_check_stop (struct ev_check *w) |
2162 | ev_check_stop (EV_P_ ev_check *w) |
971 | { |
2163 | { |
972 | ev_clear_pending ((W)w); |
2164 | clear_pending (EV_A_ (W)w); |
973 | if (ev_is_active (w)) |
2165 | if (expect_false (!ev_is_active (w))) |
974 | return; |
2166 | return; |
975 | |
2167 | |
|
|
2168 | { |
|
|
2169 | int active = ((W)w)->active; |
976 | checks [w->active - 1] = checks [--checkcnt]; |
2170 | checks [active - 1] = checks [--checkcnt]; |
|
|
2171 | ((W)checks [active - 1])->active = active; |
|
|
2172 | } |
|
|
2173 | |
977 | ev_stop ((W)w); |
2174 | ev_stop (EV_A_ (W)w); |
978 | } |
2175 | } |
979 | |
2176 | |
980 | void |
2177 | #if EV_EMBED_ENABLE |
981 | ev_child_start (struct ev_child *w) |
2178 | void noinline |
|
|
2179 | ev_embed_sweep (EV_P_ ev_embed *w) |
982 | { |
2180 | { |
|
|
2181 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
|
|
2182 | } |
|
|
2183 | |
|
|
2184 | static void |
|
|
2185 | embed_cb (EV_P_ ev_io *io, int revents) |
|
|
2186 | { |
|
|
2187 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2188 | |
983 | if (ev_is_active (w)) |
2189 | if (ev_cb (w)) |
984 | return; |
2190 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2191 | else |
|
|
2192 | ev_embed_sweep (loop, w); |
|
|
2193 | } |
985 | |
2194 | |
|
|
2195 | void |
|
|
2196 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2197 | { |
|
|
2198 | if (expect_false (ev_is_active (w))) |
|
|
2199 | return; |
|
|
2200 | |
|
|
2201 | { |
|
|
2202 | struct ev_loop *loop = w->loop; |
|
|
2203 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2204 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
2205 | } |
|
|
2206 | |
|
|
2207 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2208 | ev_io_start (EV_A_ &w->io); |
|
|
2209 | |
986 | ev_start ((W)w, 1); |
2210 | ev_start (EV_A_ (W)w, 1); |
987 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
988 | } |
2211 | } |
989 | |
2212 | |
990 | void |
2213 | void |
991 | ev_child_stop (struct ev_child *w) |
2214 | ev_embed_stop (EV_P_ ev_embed *w) |
992 | { |
2215 | { |
993 | ev_clear_pending ((W)w); |
2216 | clear_pending (EV_A_ (W)w); |
994 | if (ev_is_active (w)) |
2217 | if (expect_false (!ev_is_active (w))) |
995 | return; |
2218 | return; |
996 | |
2219 | |
997 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2220 | ev_io_stop (EV_A_ &w->io); |
|
|
2221 | |
998 | ev_stop ((W)w); |
2222 | ev_stop (EV_A_ (W)w); |
999 | } |
2223 | } |
|
|
2224 | #endif |
|
|
2225 | |
|
|
2226 | #if EV_FORK_ENABLE |
|
|
2227 | void |
|
|
2228 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2229 | { |
|
|
2230 | if (expect_false (ev_is_active (w))) |
|
|
2231 | return; |
|
|
2232 | |
|
|
2233 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2234 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2235 | forks [forkcnt - 1] = w; |
|
|
2236 | } |
|
|
2237 | |
|
|
2238 | void |
|
|
2239 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2240 | { |
|
|
2241 | clear_pending (EV_A_ (W)w); |
|
|
2242 | if (expect_false (!ev_is_active (w))) |
|
|
2243 | return; |
|
|
2244 | |
|
|
2245 | { |
|
|
2246 | int active = ((W)w)->active; |
|
|
2247 | forks [active - 1] = forks [--forkcnt]; |
|
|
2248 | ((W)forks [active - 1])->active = active; |
|
|
2249 | } |
|
|
2250 | |
|
|
2251 | ev_stop (EV_A_ (W)w); |
|
|
2252 | } |
|
|
2253 | #endif |
1000 | |
2254 | |
1001 | /*****************************************************************************/ |
2255 | /*****************************************************************************/ |
1002 | |
2256 | |
1003 | struct ev_once |
2257 | struct ev_once |
1004 | { |
2258 | { |
1005 | struct ev_io io; |
2259 | ev_io io; |
1006 | struct ev_timer to; |
2260 | ev_timer to; |
1007 | void (*cb)(int revents, void *arg); |
2261 | void (*cb)(int revents, void *arg); |
1008 | void *arg; |
2262 | void *arg; |
1009 | }; |
2263 | }; |
1010 | |
2264 | |
1011 | static void |
2265 | static void |
1012 | once_cb (struct ev_once *once, int revents) |
2266 | once_cb (EV_P_ struct ev_once *once, int revents) |
1013 | { |
2267 | { |
1014 | void (*cb)(int revents, void *arg) = once->cb; |
2268 | void (*cb)(int revents, void *arg) = once->cb; |
1015 | void *arg = once->arg; |
2269 | void *arg = once->arg; |
1016 | |
2270 | |
1017 | ev_io_stop (&once->io); |
2271 | ev_io_stop (EV_A_ &once->io); |
1018 | ev_timer_stop (&once->to); |
2272 | ev_timer_stop (EV_A_ &once->to); |
1019 | free (once); |
2273 | ev_free (once); |
1020 | |
2274 | |
1021 | cb (revents, arg); |
2275 | cb (revents, arg); |
1022 | } |
2276 | } |
1023 | |
2277 | |
1024 | static void |
2278 | static void |
1025 | once_cb_io (struct ev_io *w, int revents) |
2279 | once_cb_io (EV_P_ ev_io *w, int revents) |
1026 | { |
2280 | { |
1027 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2281 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1028 | } |
2282 | } |
1029 | |
2283 | |
1030 | static void |
2284 | static void |
1031 | once_cb_to (struct ev_timer *w, int revents) |
2285 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1032 | { |
2286 | { |
1033 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2287 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1034 | } |
2288 | } |
1035 | |
2289 | |
1036 | void |
2290 | void |
1037 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2291 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1038 | { |
2292 | { |
1039 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
2293 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1040 | |
2294 | |
1041 | if (!once) |
2295 | if (expect_false (!once)) |
|
|
2296 | { |
1042 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2297 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1043 | else |
2298 | return; |
1044 | { |
2299 | } |
|
|
2300 | |
1045 | once->cb = cb; |
2301 | once->cb = cb; |
1046 | once->arg = arg; |
2302 | once->arg = arg; |
1047 | |
2303 | |
1048 | ev_watcher_init (&once->io, once_cb_io); |
2304 | ev_init (&once->io, once_cb_io); |
1049 | if (fd >= 0) |
2305 | if (fd >= 0) |
1050 | { |
2306 | { |
1051 | ev_io_set (&once->io, fd, events); |
2307 | ev_io_set (&once->io, fd, events); |
1052 | ev_io_start (&once->io); |
2308 | ev_io_start (EV_A_ &once->io); |
1053 | } |
2309 | } |
1054 | |
2310 | |
1055 | ev_watcher_init (&once->to, once_cb_to); |
2311 | ev_init (&once->to, once_cb_to); |
1056 | if (timeout >= 0.) |
2312 | if (timeout >= 0.) |
1057 | { |
2313 | { |
1058 | ev_timer_set (&once->to, timeout, 0.); |
2314 | ev_timer_set (&once->to, timeout, 0.); |
1059 | ev_timer_start (&once->to); |
2315 | ev_timer_start (EV_A_ &once->to); |
1060 | } |
|
|
1061 | } |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | /*****************************************************************************/ |
|
|
1065 | |
|
|
1066 | #if 0 |
|
|
1067 | |
|
|
1068 | struct ev_io wio; |
|
|
1069 | |
|
|
1070 | static void |
|
|
1071 | sin_cb (struct ev_io *w, int revents) |
|
|
1072 | { |
|
|
1073 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | static void |
|
|
1077 | ocb (struct ev_timer *w, int revents) |
|
|
1078 | { |
|
|
1079 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1080 | ev_timer_stop (w); |
|
|
1081 | ev_timer_start (w); |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | static void |
|
|
1085 | scb (struct ev_signal *w, int revents) |
|
|
1086 | { |
|
|
1087 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1088 | ev_io_stop (&wio); |
|
|
1089 | ev_io_start (&wio); |
|
|
1090 | } |
|
|
1091 | |
|
|
1092 | static void |
|
|
1093 | gcb (struct ev_signal *w, int revents) |
|
|
1094 | { |
|
|
1095 | fprintf (stderr, "generic %x\n", revents); |
|
|
1096 | |
|
|
1097 | } |
|
|
1098 | |
|
|
1099 | int main (void) |
|
|
1100 | { |
|
|
1101 | ev_init (0); |
|
|
1102 | |
|
|
1103 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1104 | ev_io_start (&wio); |
|
|
1105 | |
|
|
1106 | struct ev_timer t[10000]; |
|
|
1107 | |
|
|
1108 | #if 0 |
|
|
1109 | int i; |
|
|
1110 | for (i = 0; i < 10000; ++i) |
|
|
1111 | { |
2316 | } |
1112 | struct ev_timer *w = t + i; |
|
|
1113 | ev_watcher_init (w, ocb, i); |
|
|
1114 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1115 | ev_timer_start (w); |
|
|
1116 | if (drand48 () < 0.5) |
|
|
1117 | ev_timer_stop (w); |
|
|
1118 | } |
|
|
1119 | #endif |
|
|
1120 | |
|
|
1121 | struct ev_timer t1; |
|
|
1122 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1123 | ev_timer_start (&t1); |
|
|
1124 | |
|
|
1125 | struct ev_signal sig; |
|
|
1126 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1127 | ev_signal_start (&sig); |
|
|
1128 | |
|
|
1129 | struct ev_check cw; |
|
|
1130 | ev_check_init (&cw, gcb); |
|
|
1131 | ev_check_start (&cw); |
|
|
1132 | |
|
|
1133 | struct ev_idle iw; |
|
|
1134 | ev_idle_init (&iw, gcb); |
|
|
1135 | ev_idle_start (&iw); |
|
|
1136 | |
|
|
1137 | ev_loop (0); |
|
|
1138 | |
|
|
1139 | return 0; |
|
|
1140 | } |
2317 | } |
1141 | |
2318 | |
|
|
2319 | #ifdef __cplusplus |
|
|
2320 | } |
1142 | #endif |
2321 | #endif |
1143 | |
2322 | |
1144 | |
|
|
1145 | |
|
|
1146 | |
|
|