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 |
… | |
… | |
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 | */ |
29 | |
31 | |
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32 | #ifdef __cplusplus |
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33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
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37 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
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40 | # include "config.h" |
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41 | # endif |
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42 | |
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43 | # if HAVE_CLOCK_GETTIME |
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44 | # ifndef EV_USE_MONOTONIC |
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45 | # define EV_USE_MONOTONIC 1 |
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46 | # endif |
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47 | # ifndef EV_USE_REALTIME |
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48 | # define EV_USE_REALTIME 1 |
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49 | # endif |
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50 | # else |
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51 | # ifndef EV_USE_MONOTONIC |
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52 | # define EV_USE_MONOTONIC 0 |
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53 | # endif |
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54 | # ifndef EV_USE_REALTIME |
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55 | # define EV_USE_REALTIME 0 |
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56 | # endif |
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57 | # endif |
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58 | |
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59 | # ifndef EV_USE_SELECT |
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60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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61 | # define EV_USE_SELECT 1 |
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62 | # else |
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63 | # define EV_USE_SELECT 0 |
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64 | # endif |
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65 | # endif |
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66 | |
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67 | # ifndef EV_USE_POLL |
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68 | # if HAVE_POLL && HAVE_POLL_H |
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69 | # define EV_USE_POLL 1 |
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70 | # else |
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71 | # define EV_USE_POLL 0 |
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72 | # endif |
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73 | # endif |
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74 | |
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75 | # ifndef EV_USE_EPOLL |
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76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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77 | # define EV_USE_EPOLL 1 |
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78 | # else |
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79 | # define EV_USE_EPOLL 0 |
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80 | # endif |
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81 | # endif |
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82 | |
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83 | # ifndef EV_USE_KQUEUE |
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84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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85 | # define EV_USE_KQUEUE 1 |
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86 | # else |
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87 | # define EV_USE_KQUEUE 0 |
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88 | # endif |
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89 | # endif |
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90 | |
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91 | # ifndef EV_USE_PORT |
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92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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93 | # define EV_USE_PORT 1 |
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94 | # else |
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95 | # define EV_USE_PORT 0 |
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96 | # endif |
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97 | # endif |
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98 | |
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99 | # ifndef EV_USE_INOTIFY |
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100 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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101 | # define EV_USE_INOTIFY 1 |
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102 | # else |
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103 | # define EV_USE_INOTIFY 0 |
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104 | # endif |
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105 | # endif |
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106 | |
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107 | #endif |
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108 | |
30 | #include <math.h> |
109 | #include <math.h> |
31 | #include <stdlib.h> |
110 | #include <stdlib.h> |
32 | #include <unistd.h> |
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33 | #include <fcntl.h> |
111 | #include <fcntl.h> |
34 | #include <signal.h> |
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35 | #include <stddef.h> |
112 | #include <stddef.h> |
36 | |
113 | |
37 | #include <stdio.h> |
114 | #include <stdio.h> |
38 | |
115 | |
39 | #include <assert.h> |
116 | #include <assert.h> |
40 | #include <errno.h> |
117 | #include <errno.h> |
41 | #include <sys/types.h> |
118 | #include <sys/types.h> |
42 | #include <sys/wait.h> |
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43 | #include <sys/time.h> |
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44 | #include <time.h> |
119 | #include <time.h> |
45 | |
120 | |
46 | #ifndef HAVE_MONOTONIC |
121 | #include <signal.h> |
47 | # ifdef CLOCK_MONOTONIC |
122 | |
48 | # define HAVE_MONOTONIC 1 |
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 |
49 | # endif |
138 | # endif |
50 | #endif |
139 | #endif |
51 | |
140 | |
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141 | /**/ |
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142 | |
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143 | #ifndef EV_USE_MONOTONIC |
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144 | # define EV_USE_MONOTONIC 0 |
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145 | #endif |
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146 | |
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147 | #ifndef EV_USE_REALTIME |
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148 | # define EV_USE_REALTIME 0 |
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149 | #endif |
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150 | |
52 | #ifndef HAVE_SELECT |
151 | #ifndef EV_USE_SELECT |
53 | # define HAVE_SELECT 1 |
152 | # define EV_USE_SELECT 1 |
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153 | #endif |
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154 | |
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155 | #ifndef EV_USE_POLL |
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156 | # ifdef _WIN32 |
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157 | # define EV_USE_POLL 0 |
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158 | # else |
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159 | # define EV_USE_POLL 1 |
54 | #endif |
160 | # endif |
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161 | #endif |
55 | |
162 | |
56 | #ifndef HAVE_EPOLL |
163 | #ifndef EV_USE_EPOLL |
57 | # define HAVE_EPOLL 0 |
164 | # define EV_USE_EPOLL 0 |
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165 | #endif |
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166 | |
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167 | #ifndef EV_USE_KQUEUE |
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168 | # define EV_USE_KQUEUE 0 |
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169 | #endif |
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170 | |
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171 | #ifndef EV_USE_PORT |
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172 | # define EV_USE_PORT 0 |
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173 | #endif |
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174 | |
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175 | #ifndef EV_USE_INOTIFY |
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176 | # define EV_USE_INOTIFY 0 |
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177 | #endif |
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178 | |
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179 | #ifndef EV_PID_HASHSIZE |
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180 | # if EV_MINIMAL |
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181 | # define EV_PID_HASHSIZE 1 |
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182 | # else |
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183 | # define EV_PID_HASHSIZE 16 |
58 | #endif |
184 | # endif |
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185 | #endif |
59 | |
186 | |
60 | #ifndef HAVE_REALTIME |
187 | #ifndef EV_INOTIFY_HASHSIZE |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
188 | # if EV_MINIMAL |
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189 | # define EV_INOTIFY_HASHSIZE 1 |
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190 | # else |
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191 | # define EV_INOTIFY_HASHSIZE 16 |
62 | #endif |
192 | # endif |
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193 | #endif |
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194 | |
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195 | /**/ |
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196 | |
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197 | #ifndef CLOCK_MONOTONIC |
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198 | # undef EV_USE_MONOTONIC |
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199 | # define EV_USE_MONOTONIC 0 |
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200 | #endif |
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201 | |
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202 | #ifndef CLOCK_REALTIME |
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203 | # undef EV_USE_REALTIME |
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204 | # define EV_USE_REALTIME 0 |
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205 | #endif |
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206 | |
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207 | #if !EV_STAT_ENABLE |
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208 | # undef EV_USE_INOTIFY |
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209 | # define EV_USE_INOTIFY 0 |
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210 | #endif |
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211 | |
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212 | #if EV_USE_INOTIFY |
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213 | # include <sys/inotify.h> |
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214 | #endif |
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215 | |
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216 | #if EV_SELECT_IS_WINSOCKET |
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217 | # include <winsock.h> |
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218 | #endif |
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219 | |
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220 | /**/ |
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221 | |
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222 | /* |
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223 | * This is used to avoid floating point rounding problems. |
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224 | * It is added to ev_rt_now when scheduling periodics |
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225 | * to ensure progress, time-wise, even when rounding |
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226 | * errors are against us. |
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227 | * This value is good at least till the year 4000. |
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228 | * Better solutions welcome. |
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229 | */ |
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230 | #define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
63 | |
231 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
232 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
233 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
234 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
67 | |
235 | |
68 | #include "ev.h" |
236 | #if __GNUC__ >= 4 |
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237 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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238 | # define noinline __attribute__ ((noinline)) |
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239 | #else |
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240 | # define expect(expr,value) (expr) |
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241 | # define noinline |
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242 | # if __STDC_VERSION__ < 199901L |
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243 | # define inline |
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244 | # endif |
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245 | #endif |
69 | |
246 | |
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247 | #define expect_false(expr) expect ((expr) != 0, 0) |
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248 | #define expect_true(expr) expect ((expr) != 0, 1) |
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249 | #define inline_size static inline |
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250 | |
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251 | #if EV_MINIMAL |
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252 | # define inline_speed static noinline |
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253 | #else |
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254 | # define inline_speed static inline |
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255 | #endif |
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256 | |
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257 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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258 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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259 | |
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260 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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261 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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262 | |
70 | typedef struct ev_watcher *W; |
263 | typedef ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
264 | typedef ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
265 | typedef ev_watcher_time *WT; |
73 | |
266 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
267 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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268 | |
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269 | #ifdef _WIN32 |
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270 | # include "ev_win32.c" |
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271 | #endif |
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272 | |
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273 | /*****************************************************************************/ |
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274 | |
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275 | static void (*syserr_cb)(const char *msg); |
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276 | |
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277 | void |
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278 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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279 | { |
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280 | syserr_cb = cb; |
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281 | } |
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282 | |
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283 | static void noinline |
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284 | syserr (const char *msg) |
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285 | { |
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286 | if (!msg) |
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287 | msg = "(libev) system error"; |
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288 | |
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289 | if (syserr_cb) |
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290 | syserr_cb (msg); |
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291 | else |
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292 | { |
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293 | perror (msg); |
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294 | abort (); |
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295 | } |
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296 | } |
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297 | |
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298 | static void *(*alloc)(void *ptr, long size); |
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299 | |
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300 | void |
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301 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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302 | { |
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303 | alloc = cb; |
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304 | } |
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305 | |
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306 | inline_speed void * |
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307 | ev_realloc (void *ptr, long size) |
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308 | { |
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309 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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310 | |
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311 | if (!ptr && size) |
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312 | { |
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313 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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314 | abort (); |
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315 | } |
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316 | |
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317 | return ptr; |
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318 | } |
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319 | |
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320 | #define ev_malloc(size) ev_realloc (0, (size)) |
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321 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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322 | |
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323 | /*****************************************************************************/ |
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324 | |
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325 | typedef struct |
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326 | { |
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327 | WL head; |
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328 | unsigned char events; |
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329 | unsigned char reify; |
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330 | #if EV_SELECT_IS_WINSOCKET |
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331 | SOCKET handle; |
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332 | #endif |
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333 | } ANFD; |
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334 | |
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335 | typedef struct |
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336 | { |
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337 | W w; |
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338 | int events; |
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339 | } ANPENDING; |
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340 | |
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341 | #if EV_USE_INOTIFY |
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342 | typedef struct |
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343 | { |
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344 | WL head; |
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345 | } ANFS; |
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346 | #endif |
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347 | |
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348 | #if EV_MULTIPLICITY |
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349 | |
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350 | struct ev_loop |
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351 | { |
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352 | ev_tstamp ev_rt_now; |
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353 | #define ev_rt_now ((loop)->ev_rt_now) |
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354 | #define VAR(name,decl) decl; |
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355 | #include "ev_vars.h" |
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356 | #undef VAR |
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357 | }; |
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358 | #include "ev_wrap.h" |
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359 | |
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360 | static struct ev_loop default_loop_struct; |
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361 | struct ev_loop *ev_default_loop_ptr; |
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362 | |
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363 | #else |
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364 | |
75 | ev_tstamp ev_now; |
365 | ev_tstamp ev_rt_now; |
76 | int ev_method; |
366 | #define VAR(name,decl) static decl; |
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367 | #include "ev_vars.h" |
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368 | #undef VAR |
77 | |
369 | |
78 | static int have_monotonic; /* runtime */ |
370 | static int ev_default_loop_ptr; |
79 | |
371 | |
80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
372 | #endif |
81 | static void (*method_modify)(int fd, int oev, int nev); |
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82 | static void (*method_poll)(ev_tstamp timeout); |
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83 | |
373 | |
84 | /*****************************************************************************/ |
374 | /*****************************************************************************/ |
85 | |
375 | |
86 | ev_tstamp |
376 | ev_tstamp |
87 | ev_time (void) |
377 | ev_time (void) |
88 | { |
378 | { |
89 | #if HAVE_REALTIME |
379 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
380 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
381 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
382 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
383 | #else |
94 | struct timeval tv; |
384 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
385 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
386 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
387 | #endif |
98 | } |
388 | } |
99 | |
389 | |
100 | static ev_tstamp |
390 | ev_tstamp inline_size |
101 | get_clock (void) |
391 | get_clock (void) |
102 | { |
392 | { |
103 | #if HAVE_MONOTONIC |
393 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
394 | if (expect_true (have_monotonic)) |
105 | { |
395 | { |
106 | struct timespec ts; |
396 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
397 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
398 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
399 | } |
110 | #endif |
400 | #endif |
111 | |
401 | |
112 | return ev_time (); |
402 | return ev_time (); |
113 | } |
403 | } |
114 | |
404 | |
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405 | #if EV_MULTIPLICITY |
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406 | ev_tstamp |
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407 | ev_now (EV_P) |
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408 | { |
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409 | return ev_rt_now; |
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410 | } |
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411 | #endif |
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412 | |
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413 | int inline_size |
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414 | array_nextsize (int elem, int cur, int cnt) |
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415 | { |
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416 | int ncur = cur + 1; |
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417 | |
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418 | do |
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419 | ncur <<= 1; |
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420 | while (cnt > ncur); |
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421 | |
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422 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
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423 | if (elem * ncur > 4096) |
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424 | { |
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425 | ncur *= elem; |
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426 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
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427 | ncur = ncur - sizeof (void *) * 4; |
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428 | ncur /= elem; |
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429 | } |
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430 | |
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431 | return ncur; |
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432 | } |
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433 | |
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434 | static noinline void * |
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435 | array_realloc (int elem, void *base, int *cur, int cnt) |
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436 | { |
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437 | *cur = array_nextsize (elem, *cur, cnt); |
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438 | return ev_realloc (base, elem * *cur); |
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439 | } |
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440 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
441 | #define array_needsize(type,base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
442 | if (expect_false ((cnt) > (cur))) \ |
117 | { \ |
443 | { \ |
118 | int newcnt = cur; \ |
444 | int ocur_ = (cur); \ |
119 | do \ |
445 | (base) = (type *)array_realloc \ |
120 | { \ |
446 | (sizeof (type), (base), &(cur), (cnt)); \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
447 | init ((base) + (ocur_), (cur) - ocur_); \ |
122 | } \ |
448 | } |
123 | while ((cnt) > newcnt); \ |
449 | |
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450 | #if 0 |
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451 | #define array_slim(type,stem) \ |
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452 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
124 | \ |
453 | { \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
454 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
126 | init (base + cur, newcnt - cur); \ |
455 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
127 | cur = newcnt; \ |
456 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
128 | } |
457 | } |
|
|
458 | #endif |
|
|
459 | |
|
|
460 | #define array_free(stem, idx) \ |
|
|
461 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
129 | |
462 | |
130 | /*****************************************************************************/ |
463 | /*****************************************************************************/ |
131 | |
464 | |
|
|
465 | void noinline |
|
|
466 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
467 | { |
|
|
468 | W w_ = (W)w; |
|
|
469 | int pri = ABSPRI (w_); |
|
|
470 | |
|
|
471 | if (expect_false (w_->pending)) |
|
|
472 | pendings [pri][w_->pending - 1].events |= revents; |
|
|
473 | else |
|
|
474 | { |
|
|
475 | w_->pending = ++pendingcnt [pri]; |
|
|
476 | array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
|
|
477 | pendings [pri][w_->pending - 1].w = w_; |
|
|
478 | pendings [pri][w_->pending - 1].events = revents; |
|
|
479 | } |
|
|
480 | } |
|
|
481 | |
|
|
482 | void inline_speed |
|
|
483 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
484 | { |
|
|
485 | int i; |
|
|
486 | |
|
|
487 | for (i = 0; i < eventcnt; ++i) |
|
|
488 | ev_feed_event (EV_A_ events [i], type); |
|
|
489 | } |
|
|
490 | |
|
|
491 | /*****************************************************************************/ |
|
|
492 | |
|
|
493 | void inline_size |
|
|
494 | anfds_init (ANFD *base, int count) |
|
|
495 | { |
|
|
496 | while (count--) |
|
|
497 | { |
|
|
498 | base->head = 0; |
|
|
499 | base->events = EV_NONE; |
|
|
500 | base->reify = 0; |
|
|
501 | |
|
|
502 | ++base; |
|
|
503 | } |
|
|
504 | } |
|
|
505 | |
|
|
506 | void inline_speed |
|
|
507 | fd_event (EV_P_ int fd, int revents) |
|
|
508 | { |
|
|
509 | ANFD *anfd = anfds + fd; |
|
|
510 | ev_io *w; |
|
|
511 | |
|
|
512 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
513 | { |
|
|
514 | int ev = w->events & revents; |
|
|
515 | |
|
|
516 | if (ev) |
|
|
517 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
518 | } |
|
|
519 | } |
|
|
520 | |
|
|
521 | void |
|
|
522 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
523 | { |
|
|
524 | if (fd >= 0 && fd < anfdmax) |
|
|
525 | fd_event (EV_A_ fd, revents); |
|
|
526 | } |
|
|
527 | |
|
|
528 | void inline_size |
|
|
529 | fd_reify (EV_P) |
|
|
530 | { |
|
|
531 | int i; |
|
|
532 | |
|
|
533 | for (i = 0; i < fdchangecnt; ++i) |
|
|
534 | { |
|
|
535 | int fd = fdchanges [i]; |
|
|
536 | ANFD *anfd = anfds + fd; |
|
|
537 | ev_io *w; |
|
|
538 | |
|
|
539 | unsigned char events = 0; |
|
|
540 | |
|
|
541 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
542 | events |= (unsigned char)w->events; |
|
|
543 | |
|
|
544 | #if EV_SELECT_IS_WINSOCKET |
|
|
545 | if (events) |
|
|
546 | { |
|
|
547 | unsigned long argp; |
|
|
548 | anfd->handle = _get_osfhandle (fd); |
|
|
549 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
550 | } |
|
|
551 | #endif |
|
|
552 | |
|
|
553 | { |
|
|
554 | unsigned char o_events = anfd->events; |
|
|
555 | unsigned char o_reify = anfd->reify; |
|
|
556 | |
|
|
557 | anfd->reify = 0; |
|
|
558 | anfd->events = events; |
|
|
559 | |
|
|
560 | if (o_events != events || o_reify & EV_IOFDSET) |
|
|
561 | backend_modify (EV_A_ fd, o_events, events); |
|
|
562 | } |
|
|
563 | } |
|
|
564 | |
|
|
565 | fdchangecnt = 0; |
|
|
566 | } |
|
|
567 | |
|
|
568 | void inline_size |
|
|
569 | fd_change (EV_P_ int fd, int flags) |
|
|
570 | { |
|
|
571 | unsigned char reify = anfds [fd].reify; |
|
|
572 | anfds [fd].reify |= flags; |
|
|
573 | |
|
|
574 | if (expect_true (!reify)) |
|
|
575 | { |
|
|
576 | ++fdchangecnt; |
|
|
577 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
578 | fdchanges [fdchangecnt - 1] = fd; |
|
|
579 | } |
|
|
580 | } |
|
|
581 | |
|
|
582 | void inline_speed |
|
|
583 | fd_kill (EV_P_ int fd) |
|
|
584 | { |
|
|
585 | ev_io *w; |
|
|
586 | |
|
|
587 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
588 | { |
|
|
589 | ev_io_stop (EV_A_ w); |
|
|
590 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
591 | } |
|
|
592 | } |
|
|
593 | |
|
|
594 | int inline_size |
|
|
595 | fd_valid (int fd) |
|
|
596 | { |
|
|
597 | #ifdef _WIN32 |
|
|
598 | return _get_osfhandle (fd) != -1; |
|
|
599 | #else |
|
|
600 | return fcntl (fd, F_GETFD) != -1; |
|
|
601 | #endif |
|
|
602 | } |
|
|
603 | |
|
|
604 | /* called on EBADF to verify fds */ |
|
|
605 | static void noinline |
|
|
606 | fd_ebadf (EV_P) |
|
|
607 | { |
|
|
608 | int fd; |
|
|
609 | |
|
|
610 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
611 | if (anfds [fd].events) |
|
|
612 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
613 | fd_kill (EV_A_ fd); |
|
|
614 | } |
|
|
615 | |
|
|
616 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
617 | static void noinline |
|
|
618 | fd_enomem (EV_P) |
|
|
619 | { |
|
|
620 | int fd; |
|
|
621 | |
|
|
622 | for (fd = anfdmax; fd--; ) |
|
|
623 | if (anfds [fd].events) |
|
|
624 | { |
|
|
625 | fd_kill (EV_A_ fd); |
|
|
626 | return; |
|
|
627 | } |
|
|
628 | } |
|
|
629 | |
|
|
630 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
631 | static void noinline |
|
|
632 | fd_rearm_all (EV_P) |
|
|
633 | { |
|
|
634 | int fd; |
|
|
635 | |
|
|
636 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
637 | if (anfds [fd].events) |
|
|
638 | { |
|
|
639 | anfds [fd].events = 0; |
|
|
640 | fd_change (EV_A_ fd, EV_IOFDSET | 1); |
|
|
641 | } |
|
|
642 | } |
|
|
643 | |
|
|
644 | /*****************************************************************************/ |
|
|
645 | |
|
|
646 | void inline_speed |
|
|
647 | upheap (WT *heap, int k) |
|
|
648 | { |
|
|
649 | WT w = heap [k]; |
|
|
650 | |
|
|
651 | while (k) |
|
|
652 | { |
|
|
653 | int p = (k - 1) >> 1; |
|
|
654 | |
|
|
655 | if (heap [p]->at <= w->at) |
|
|
656 | break; |
|
|
657 | |
|
|
658 | heap [k] = heap [p]; |
|
|
659 | ((W)heap [k])->active = k + 1; |
|
|
660 | k = p; |
|
|
661 | } |
|
|
662 | |
|
|
663 | heap [k] = w; |
|
|
664 | ((W)heap [k])->active = k + 1; |
|
|
665 | } |
|
|
666 | |
|
|
667 | void inline_speed |
|
|
668 | downheap (WT *heap, int N, int k) |
|
|
669 | { |
|
|
670 | WT w = heap [k]; |
|
|
671 | |
|
|
672 | for (;;) |
|
|
673 | { |
|
|
674 | int c = (k << 1) + 1; |
|
|
675 | |
|
|
676 | if (c >= N) |
|
|
677 | break; |
|
|
678 | |
|
|
679 | c += c + 1 < N && heap [c]->at > heap [c + 1]->at |
|
|
680 | ? 1 : 0; |
|
|
681 | |
|
|
682 | if (w->at <= heap [c]->at) |
|
|
683 | break; |
|
|
684 | |
|
|
685 | heap [k] = heap [c]; |
|
|
686 | ((W)heap [k])->active = k + 1; |
|
|
687 | |
|
|
688 | k = c; |
|
|
689 | } |
|
|
690 | |
|
|
691 | heap [k] = w; |
|
|
692 | ((W)heap [k])->active = k + 1; |
|
|
693 | } |
|
|
694 | |
|
|
695 | void inline_size |
|
|
696 | adjustheap (WT *heap, int N, int k) |
|
|
697 | { |
|
|
698 | upheap (heap, k); |
|
|
699 | downheap (heap, N, k); |
|
|
700 | } |
|
|
701 | |
|
|
702 | /*****************************************************************************/ |
|
|
703 | |
132 | typedef struct |
704 | typedef struct |
133 | { |
705 | { |
134 | struct ev_io *head; |
706 | WL head; |
135 | unsigned char wev, rev; /* want, received event set */ |
|
|
136 | } ANFD; |
|
|
137 | |
|
|
138 | static ANFD *anfds; |
|
|
139 | static int anfdmax; |
|
|
140 | |
|
|
141 | static int *fdchanges; |
|
|
142 | static int fdchangemax, fdchangecnt; |
|
|
143 | |
|
|
144 | static void |
|
|
145 | anfds_init (ANFD *base, int count) |
|
|
146 | { |
|
|
147 | while (count--) |
|
|
148 | { |
|
|
149 | base->head = 0; |
|
|
150 | base->wev = base->rev = EV_NONE; |
|
|
151 | ++base; |
|
|
152 | } |
|
|
153 | } |
|
|
154 | |
|
|
155 | typedef struct |
|
|
156 | { |
|
|
157 | W w; |
|
|
158 | int events; |
|
|
159 | } ANPENDING; |
|
|
160 | |
|
|
161 | static ANPENDING *pendings; |
|
|
162 | static int pendingmax, pendingcnt; |
|
|
163 | |
|
|
164 | static void |
|
|
165 | event (W w, int events) |
|
|
166 | { |
|
|
167 | if (w->active) |
|
|
168 | { |
|
|
169 | w->pending = ++pendingcnt; |
|
|
170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
171 | pendings [pendingcnt - 1].w = w; |
|
|
172 | pendings [pendingcnt - 1].events = events; |
|
|
173 | } |
|
|
174 | } |
|
|
175 | |
|
|
176 | static void |
|
|
177 | fd_event (int fd, int events) |
|
|
178 | { |
|
|
179 | ANFD *anfd = anfds + fd; |
|
|
180 | struct ev_io *w; |
|
|
181 | |
|
|
182 | for (w = anfd->head; w; w = w->next) |
|
|
183 | { |
|
|
184 | int ev = w->events & events; |
|
|
185 | |
|
|
186 | if (ev) |
|
|
187 | event ((W)w, ev); |
|
|
188 | } |
|
|
189 | } |
|
|
190 | |
|
|
191 | static void |
|
|
192 | queue_events (W *events, int eventcnt, int type) |
|
|
193 | { |
|
|
194 | int i; |
|
|
195 | |
|
|
196 | for (i = 0; i < eventcnt; ++i) |
|
|
197 | event (events [i], type); |
|
|
198 | } |
|
|
199 | |
|
|
200 | /* called on EBADF to verify fds */ |
|
|
201 | static void |
|
|
202 | fd_recheck () |
|
|
203 | { |
|
|
204 | int fd; |
|
|
205 | |
|
|
206 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
207 | if (anfds [fd].wev) |
|
|
208 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
|
|
209 | while (anfds [fd].head) |
|
|
210 | evio_stop (anfds [fd].head); |
|
|
211 | } |
|
|
212 | |
|
|
213 | /*****************************************************************************/ |
|
|
214 | |
|
|
215 | static struct ev_timer **timers; |
|
|
216 | static int timermax, timercnt; |
|
|
217 | |
|
|
218 | static struct ev_periodic **periodics; |
|
|
219 | static int periodicmax, periodiccnt; |
|
|
220 | |
|
|
221 | static void |
|
|
222 | upheap (WT *timers, int k) |
|
|
223 | { |
|
|
224 | WT w = timers [k]; |
|
|
225 | |
|
|
226 | while (k && timers [k >> 1]->at > w->at) |
|
|
227 | { |
|
|
228 | timers [k] = timers [k >> 1]; |
|
|
229 | timers [k]->active = k + 1; |
|
|
230 | k >>= 1; |
|
|
231 | } |
|
|
232 | |
|
|
233 | timers [k] = w; |
|
|
234 | timers [k]->active = k + 1; |
|
|
235 | |
|
|
236 | } |
|
|
237 | |
|
|
238 | static void |
|
|
239 | downheap (WT *timers, int N, int k) |
|
|
240 | { |
|
|
241 | WT w = timers [k]; |
|
|
242 | |
|
|
243 | while (k < (N >> 1)) |
|
|
244 | { |
|
|
245 | int j = k << 1; |
|
|
246 | |
|
|
247 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
248 | ++j; |
|
|
249 | |
|
|
250 | if (w->at <= timers [j]->at) |
|
|
251 | break; |
|
|
252 | |
|
|
253 | timers [k] = timers [j]; |
|
|
254 | timers [k]->active = k + 1; |
|
|
255 | k = j; |
|
|
256 | } |
|
|
257 | |
|
|
258 | timers [k] = w; |
|
|
259 | timers [k]->active = k + 1; |
|
|
260 | } |
|
|
261 | |
|
|
262 | /*****************************************************************************/ |
|
|
263 | |
|
|
264 | typedef struct |
|
|
265 | { |
|
|
266 | struct ev_signal *head; |
|
|
267 | sig_atomic_t gotsig; |
707 | sig_atomic_t volatile gotsig; |
268 | } ANSIG; |
708 | } ANSIG; |
269 | |
709 | |
270 | static ANSIG *signals; |
710 | static ANSIG *signals; |
271 | static int signalmax; |
711 | static int signalmax; |
272 | |
712 | |
273 | static int sigpipe [2]; |
713 | static int sigpipe [2]; |
274 | static sig_atomic_t gotsig; |
714 | static sig_atomic_t volatile gotsig; |
275 | static struct ev_io sigev; |
715 | static ev_io sigev; |
276 | |
716 | |
277 | static void |
717 | void inline_size |
278 | signals_init (ANSIG *base, int count) |
718 | signals_init (ANSIG *base, int count) |
279 | { |
719 | { |
280 | while (count--) |
720 | while (count--) |
281 | { |
721 | { |
282 | base->head = 0; |
722 | base->head = 0; |
283 | base->gotsig = 0; |
723 | base->gotsig = 0; |
|
|
724 | |
284 | ++base; |
725 | ++base; |
285 | } |
726 | } |
286 | } |
727 | } |
287 | |
728 | |
288 | static void |
729 | static void |
289 | sighandler (int signum) |
730 | sighandler (int signum) |
290 | { |
731 | { |
|
|
732 | #if _WIN32 |
|
|
733 | signal (signum, sighandler); |
|
|
734 | #endif |
|
|
735 | |
291 | signals [signum - 1].gotsig = 1; |
736 | signals [signum - 1].gotsig = 1; |
292 | |
737 | |
293 | if (!gotsig) |
738 | if (!gotsig) |
294 | { |
739 | { |
|
|
740 | int old_errno = errno; |
295 | gotsig = 1; |
741 | gotsig = 1; |
296 | write (sigpipe [1], &gotsig, 1); |
742 | write (sigpipe [1], &signum, 1); |
|
|
743 | errno = old_errno; |
297 | } |
744 | } |
|
|
745 | } |
|
|
746 | |
|
|
747 | void noinline |
|
|
748 | ev_feed_signal_event (EV_P_ int signum) |
|
|
749 | { |
|
|
750 | WL w; |
|
|
751 | |
|
|
752 | #if EV_MULTIPLICITY |
|
|
753 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
754 | #endif |
|
|
755 | |
|
|
756 | --signum; |
|
|
757 | |
|
|
758 | if (signum < 0 || signum >= signalmax) |
|
|
759 | return; |
|
|
760 | |
|
|
761 | signals [signum].gotsig = 0; |
|
|
762 | |
|
|
763 | for (w = signals [signum].head; w; w = w->next) |
|
|
764 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
298 | } |
765 | } |
299 | |
766 | |
300 | static void |
767 | static void |
301 | sigcb (struct ev_io *iow, int revents) |
768 | sigcb (EV_P_ ev_io *iow, int revents) |
302 | { |
769 | { |
303 | struct ev_signal *w; |
|
|
304 | int sig; |
770 | int signum; |
305 | |
771 | |
|
|
772 | read (sigpipe [0], &revents, 1); |
306 | gotsig = 0; |
773 | gotsig = 0; |
307 | read (sigpipe [0], &revents, 1); |
|
|
308 | |
774 | |
309 | for (sig = signalmax; sig--; ) |
775 | for (signum = signalmax; signum--; ) |
310 | if (signals [sig].gotsig) |
776 | if (signals [signum].gotsig) |
|
|
777 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
778 | } |
|
|
779 | |
|
|
780 | void inline_speed |
|
|
781 | fd_intern (int fd) |
|
|
782 | { |
|
|
783 | #ifdef _WIN32 |
|
|
784 | int arg = 1; |
|
|
785 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
786 | #else |
|
|
787 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
788 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
789 | #endif |
|
|
790 | } |
|
|
791 | |
|
|
792 | static void noinline |
|
|
793 | siginit (EV_P) |
|
|
794 | { |
|
|
795 | fd_intern (sigpipe [0]); |
|
|
796 | fd_intern (sigpipe [1]); |
|
|
797 | |
|
|
798 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
799 | ev_io_start (EV_A_ &sigev); |
|
|
800 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
801 | } |
|
|
802 | |
|
|
803 | /*****************************************************************************/ |
|
|
804 | |
|
|
805 | static WL childs [EV_PID_HASHSIZE]; |
|
|
806 | |
|
|
807 | #ifndef _WIN32 |
|
|
808 | |
|
|
809 | static ev_signal childev; |
|
|
810 | |
|
|
811 | void inline_speed |
|
|
812 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
813 | { |
|
|
814 | ev_child *w; |
|
|
815 | |
|
|
816 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
817 | if (w->pid == pid || !w->pid) |
311 | { |
818 | { |
312 | signals [sig].gotsig = 0; |
819 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
313 | |
820 | w->rpid = pid; |
314 | for (w = signals [sig].head; w; w = w->next) |
821 | w->rstatus = status; |
315 | event ((W)w, EV_SIGNAL); |
822 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
316 | } |
823 | } |
317 | } |
824 | } |
318 | |
|
|
319 | static void |
|
|
320 | siginit (void) |
|
|
321 | { |
|
|
322 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
323 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
324 | |
|
|
325 | /* rather than sort out wether we really need nb, set it */ |
|
|
326 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
327 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
328 | |
|
|
329 | evio_set (&sigev, sigpipe [0], EV_READ); |
|
|
330 | evio_start (&sigev); |
|
|
331 | } |
|
|
332 | |
|
|
333 | /*****************************************************************************/ |
|
|
334 | |
|
|
335 | static struct ev_idle **idles; |
|
|
336 | static int idlemax, idlecnt; |
|
|
337 | |
|
|
338 | static struct ev_prepare **prepares; |
|
|
339 | static int preparemax, preparecnt; |
|
|
340 | |
|
|
341 | static struct ev_check **checks; |
|
|
342 | static int checkmax, checkcnt; |
|
|
343 | |
|
|
344 | /*****************************************************************************/ |
|
|
345 | |
|
|
346 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
347 | static struct ev_signal childev; |
|
|
348 | |
825 | |
349 | #ifndef WCONTINUED |
826 | #ifndef WCONTINUED |
350 | # define WCONTINUED 0 |
827 | # define WCONTINUED 0 |
351 | #endif |
828 | #endif |
352 | |
829 | |
353 | static void |
830 | static void |
354 | childcb (struct ev_signal *sw, int revents) |
831 | childcb (EV_P_ ev_signal *sw, int revents) |
355 | { |
832 | { |
356 | struct ev_child *w; |
|
|
357 | int pid, status; |
833 | int pid, status; |
358 | |
834 | |
|
|
835 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
359 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
836 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
360 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
837 | if (!WCONTINUED |
361 | if (w->pid == pid || w->pid == -1) |
838 | || errno != EINVAL |
362 | { |
839 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
363 | w->status = status; |
840 | return; |
364 | event ((W)w, EV_CHILD); |
841 | |
365 | } |
842 | /* make sure we are called again until all childs have been reaped */ |
|
|
843 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
844 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
845 | |
|
|
846 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
847 | if (EV_PID_HASHSIZE > 1) |
|
|
848 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
366 | } |
849 | } |
|
|
850 | |
|
|
851 | #endif |
367 | |
852 | |
368 | /*****************************************************************************/ |
853 | /*****************************************************************************/ |
369 | |
854 | |
|
|
855 | #if EV_USE_PORT |
|
|
856 | # include "ev_port.c" |
|
|
857 | #endif |
|
|
858 | #if EV_USE_KQUEUE |
|
|
859 | # include "ev_kqueue.c" |
|
|
860 | #endif |
370 | #if HAVE_EPOLL |
861 | #if EV_USE_EPOLL |
371 | # include "ev_epoll.c" |
862 | # include "ev_epoll.c" |
372 | #endif |
863 | #endif |
|
|
864 | #if EV_USE_POLL |
|
|
865 | # include "ev_poll.c" |
|
|
866 | #endif |
373 | #if HAVE_SELECT |
867 | #if EV_USE_SELECT |
374 | # include "ev_select.c" |
868 | # include "ev_select.c" |
375 | #endif |
869 | #endif |
376 | |
870 | |
377 | int ev_init (int flags) |
871 | int |
|
|
872 | ev_version_major (void) |
378 | { |
873 | { |
379 | if (!ev_method) |
874 | return EV_VERSION_MAJOR; |
|
|
875 | } |
|
|
876 | |
|
|
877 | int |
|
|
878 | ev_version_minor (void) |
|
|
879 | { |
|
|
880 | return EV_VERSION_MINOR; |
|
|
881 | } |
|
|
882 | |
|
|
883 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
884 | int inline_size |
|
|
885 | enable_secure (void) |
|
|
886 | { |
|
|
887 | #ifdef _WIN32 |
|
|
888 | return 0; |
|
|
889 | #else |
|
|
890 | return getuid () != geteuid () |
|
|
891 | || getgid () != getegid (); |
|
|
892 | #endif |
|
|
893 | } |
|
|
894 | |
|
|
895 | unsigned int |
|
|
896 | ev_supported_backends (void) |
|
|
897 | { |
|
|
898 | unsigned int flags = 0; |
|
|
899 | |
|
|
900 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
901 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
902 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
903 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
904 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
905 | |
|
|
906 | return flags; |
|
|
907 | } |
|
|
908 | |
|
|
909 | unsigned int |
|
|
910 | ev_recommended_backends (void) |
|
|
911 | { |
|
|
912 | unsigned int flags = ev_supported_backends (); |
|
|
913 | |
|
|
914 | #ifndef __NetBSD__ |
|
|
915 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
916 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
917 | flags &= ~EVBACKEND_KQUEUE; |
|
|
918 | #endif |
|
|
919 | #ifdef __APPLE__ |
|
|
920 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
921 | flags &= ~EVBACKEND_POLL; |
|
|
922 | #endif |
|
|
923 | |
|
|
924 | return flags; |
|
|
925 | } |
|
|
926 | |
|
|
927 | unsigned int |
|
|
928 | ev_embeddable_backends (void) |
|
|
929 | { |
|
|
930 | return EVBACKEND_EPOLL |
|
|
931 | | EVBACKEND_KQUEUE |
|
|
932 | | EVBACKEND_PORT; |
|
|
933 | } |
|
|
934 | |
|
|
935 | unsigned int |
|
|
936 | ev_backend (EV_P) |
|
|
937 | { |
|
|
938 | return backend; |
|
|
939 | } |
|
|
940 | |
|
|
941 | unsigned int |
|
|
942 | ev_loop_count (EV_P) |
|
|
943 | { |
|
|
944 | return loop_count; |
|
|
945 | } |
|
|
946 | |
|
|
947 | static void noinline |
|
|
948 | loop_init (EV_P_ unsigned int flags) |
|
|
949 | { |
|
|
950 | if (!backend) |
380 | { |
951 | { |
381 | #if HAVE_MONOTONIC |
952 | #if EV_USE_MONOTONIC |
382 | { |
953 | { |
383 | struct timespec ts; |
954 | struct timespec ts; |
384 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
955 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
385 | have_monotonic = 1; |
956 | have_monotonic = 1; |
386 | } |
957 | } |
387 | #endif |
958 | #endif |
388 | |
959 | |
389 | ev_now = ev_time (); |
960 | ev_rt_now = ev_time (); |
390 | now = get_clock (); |
961 | mn_now = get_clock (); |
|
|
962 | now_floor = mn_now; |
391 | diff = ev_now - now; |
963 | rtmn_diff = ev_rt_now - mn_now; |
392 | |
964 | |
|
|
965 | /* pid check not overridable via env */ |
|
|
966 | #ifndef _WIN32 |
|
|
967 | if (flags & EVFLAG_FORKCHECK) |
|
|
968 | curpid = getpid (); |
|
|
969 | #endif |
|
|
970 | |
|
|
971 | if (!(flags & EVFLAG_NOENV) |
|
|
972 | && !enable_secure () |
|
|
973 | && getenv ("LIBEV_FLAGS")) |
|
|
974 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
975 | |
|
|
976 | if (!(flags & 0x0000ffffUL)) |
|
|
977 | flags |= ev_recommended_backends (); |
|
|
978 | |
|
|
979 | backend = 0; |
|
|
980 | backend_fd = -1; |
|
|
981 | #if EV_USE_INOTIFY |
|
|
982 | fs_fd = -2; |
|
|
983 | #endif |
|
|
984 | |
|
|
985 | #if EV_USE_PORT |
|
|
986 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
987 | #endif |
|
|
988 | #if EV_USE_KQUEUE |
|
|
989 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
990 | #endif |
|
|
991 | #if EV_USE_EPOLL |
|
|
992 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
993 | #endif |
|
|
994 | #if EV_USE_POLL |
|
|
995 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
996 | #endif |
|
|
997 | #if EV_USE_SELECT |
|
|
998 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
999 | #endif |
|
|
1000 | |
|
|
1001 | ev_init (&sigev, sigcb); |
|
|
1002 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
1003 | } |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | static void noinline |
|
|
1007 | loop_destroy (EV_P) |
|
|
1008 | { |
|
|
1009 | int i; |
|
|
1010 | |
|
|
1011 | #if EV_USE_INOTIFY |
|
|
1012 | if (fs_fd >= 0) |
|
|
1013 | close (fs_fd); |
|
|
1014 | #endif |
|
|
1015 | |
|
|
1016 | if (backend_fd >= 0) |
|
|
1017 | close (backend_fd); |
|
|
1018 | |
|
|
1019 | #if EV_USE_PORT |
|
|
1020 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
1021 | #endif |
|
|
1022 | #if EV_USE_KQUEUE |
|
|
1023 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
1024 | #endif |
|
|
1025 | #if EV_USE_EPOLL |
|
|
1026 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1027 | #endif |
|
|
1028 | #if EV_USE_POLL |
|
|
1029 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1030 | #endif |
|
|
1031 | #if EV_USE_SELECT |
|
|
1032 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1033 | #endif |
|
|
1034 | |
|
|
1035 | for (i = NUMPRI; i--; ) |
|
|
1036 | { |
|
|
1037 | array_free (pending, [i]); |
|
|
1038 | #if EV_IDLE_ENABLE |
|
|
1039 | array_free (idle, [i]); |
|
|
1040 | #endif |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | ev_free (anfds); anfdmax = 0; |
|
|
1044 | |
|
|
1045 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1046 | array_free (fdchange, EMPTY); |
|
|
1047 | array_free (timer, EMPTY); |
|
|
1048 | #if EV_PERIODIC_ENABLE |
|
|
1049 | array_free (periodic, EMPTY); |
|
|
1050 | #endif |
|
|
1051 | #if EV_FORK_ENABLE |
|
|
1052 | array_free (fork, EMPTY); |
|
|
1053 | #endif |
|
|
1054 | array_free (prepare, EMPTY); |
|
|
1055 | array_free (check, EMPTY); |
|
|
1056 | |
|
|
1057 | backend = 0; |
|
|
1058 | } |
|
|
1059 | |
|
|
1060 | void inline_size infy_fork (EV_P); |
|
|
1061 | |
|
|
1062 | void inline_size |
|
|
1063 | loop_fork (EV_P) |
|
|
1064 | { |
|
|
1065 | #if EV_USE_PORT |
|
|
1066 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1067 | #endif |
|
|
1068 | #if EV_USE_KQUEUE |
|
|
1069 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1070 | #endif |
|
|
1071 | #if EV_USE_EPOLL |
|
|
1072 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1073 | #endif |
|
|
1074 | #if EV_USE_INOTIFY |
|
|
1075 | infy_fork (EV_A); |
|
|
1076 | #endif |
|
|
1077 | |
|
|
1078 | if (ev_is_active (&sigev)) |
|
|
1079 | { |
|
|
1080 | /* default loop */ |
|
|
1081 | |
|
|
1082 | ev_ref (EV_A); |
|
|
1083 | ev_io_stop (EV_A_ &sigev); |
|
|
1084 | close (sigpipe [0]); |
|
|
1085 | close (sigpipe [1]); |
|
|
1086 | |
|
|
1087 | while (pipe (sigpipe)) |
|
|
1088 | syserr ("(libev) error creating pipe"); |
|
|
1089 | |
|
|
1090 | siginit (EV_A); |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | postfork = 0; |
|
|
1094 | } |
|
|
1095 | |
|
|
1096 | #if EV_MULTIPLICITY |
|
|
1097 | struct ev_loop * |
|
|
1098 | ev_loop_new (unsigned int flags) |
|
|
1099 | { |
|
|
1100 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1101 | |
|
|
1102 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1103 | |
|
|
1104 | loop_init (EV_A_ flags); |
|
|
1105 | |
|
|
1106 | if (ev_backend (EV_A)) |
|
|
1107 | return loop; |
|
|
1108 | |
|
|
1109 | return 0; |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | void |
|
|
1113 | ev_loop_destroy (EV_P) |
|
|
1114 | { |
|
|
1115 | loop_destroy (EV_A); |
|
|
1116 | ev_free (loop); |
|
|
1117 | } |
|
|
1118 | |
|
|
1119 | void |
|
|
1120 | ev_loop_fork (EV_P) |
|
|
1121 | { |
|
|
1122 | postfork = 1; |
|
|
1123 | } |
|
|
1124 | |
|
|
1125 | #endif |
|
|
1126 | |
|
|
1127 | #if EV_MULTIPLICITY |
|
|
1128 | struct ev_loop * |
|
|
1129 | ev_default_loop_init (unsigned int flags) |
|
|
1130 | #else |
|
|
1131 | int |
|
|
1132 | ev_default_loop (unsigned int flags) |
|
|
1133 | #endif |
|
|
1134 | { |
|
|
1135 | if (sigpipe [0] == sigpipe [1]) |
393 | if (pipe (sigpipe)) |
1136 | if (pipe (sigpipe)) |
394 | return 0; |
1137 | return 0; |
395 | |
1138 | |
396 | ev_method = EVMETHOD_NONE; |
1139 | if (!ev_default_loop_ptr) |
397 | #if HAVE_EPOLL |
1140 | { |
398 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
1141 | #if EV_MULTIPLICITY |
|
|
1142 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1143 | #else |
|
|
1144 | ev_default_loop_ptr = 1; |
399 | #endif |
1145 | #endif |
400 | #if HAVE_SELECT |
|
|
401 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
402 | #endif |
|
|
403 | |
1146 | |
404 | if (ev_method) |
1147 | loop_init (EV_A_ flags); |
|
|
1148 | |
|
|
1149 | if (ev_backend (EV_A)) |
405 | { |
1150 | { |
406 | evw_init (&sigev, sigcb); |
|
|
407 | siginit (); |
1151 | siginit (EV_A); |
408 | |
1152 | |
|
|
1153 | #ifndef _WIN32 |
409 | evsignal_init (&childev, childcb, SIGCHLD); |
1154 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1155 | ev_set_priority (&childev, EV_MAXPRI); |
410 | evsignal_start (&childev); |
1156 | ev_signal_start (EV_A_ &childev); |
|
|
1157 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1158 | #endif |
411 | } |
1159 | } |
|
|
1160 | else |
|
|
1161 | ev_default_loop_ptr = 0; |
412 | } |
1162 | } |
413 | |
1163 | |
414 | return ev_method; |
1164 | return ev_default_loop_ptr; |
|
|
1165 | } |
|
|
1166 | |
|
|
1167 | void |
|
|
1168 | ev_default_destroy (void) |
|
|
1169 | { |
|
|
1170 | #if EV_MULTIPLICITY |
|
|
1171 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1172 | #endif |
|
|
1173 | |
|
|
1174 | #ifndef _WIN32 |
|
|
1175 | ev_ref (EV_A); /* child watcher */ |
|
|
1176 | ev_signal_stop (EV_A_ &childev); |
|
|
1177 | #endif |
|
|
1178 | |
|
|
1179 | ev_ref (EV_A); /* signal watcher */ |
|
|
1180 | ev_io_stop (EV_A_ &sigev); |
|
|
1181 | |
|
|
1182 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1183 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1184 | |
|
|
1185 | loop_destroy (EV_A); |
|
|
1186 | } |
|
|
1187 | |
|
|
1188 | void |
|
|
1189 | ev_default_fork (void) |
|
|
1190 | { |
|
|
1191 | #if EV_MULTIPLICITY |
|
|
1192 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1193 | #endif |
|
|
1194 | |
|
|
1195 | if (backend) |
|
|
1196 | postfork = 1; |
415 | } |
1197 | } |
416 | |
1198 | |
417 | /*****************************************************************************/ |
1199 | /*****************************************************************************/ |
418 | |
1200 | |
419 | void ev_prefork (void) |
1201 | void |
|
|
1202 | ev_invoke (EV_P_ void *w, int revents) |
420 | { |
1203 | { |
421 | /* nop */ |
1204 | EV_CB_INVOKE ((W)w, revents); |
422 | } |
1205 | } |
423 | |
1206 | |
424 | void ev_postfork_parent (void) |
1207 | void inline_speed |
|
|
1208 | call_pending (EV_P) |
425 | { |
1209 | { |
426 | /* nop */ |
|
|
427 | } |
|
|
428 | |
|
|
429 | void ev_postfork_child (void) |
|
|
430 | { |
|
|
431 | #if HAVE_EPOLL |
|
|
432 | if (ev_method == EVMETHOD_EPOLL) |
|
|
433 | epoll_postfork_child (); |
|
|
434 | #endif |
|
|
435 | |
|
|
436 | evio_stop (&sigev); |
|
|
437 | close (sigpipe [0]); |
|
|
438 | close (sigpipe [1]); |
|
|
439 | pipe (sigpipe); |
|
|
440 | siginit (); |
|
|
441 | } |
|
|
442 | |
|
|
443 | /*****************************************************************************/ |
|
|
444 | |
|
|
445 | static void |
|
|
446 | fd_reify (void) |
|
|
447 | { |
|
|
448 | int i; |
1210 | int pri; |
449 | |
1211 | |
450 | for (i = 0; i < fdchangecnt; ++i) |
1212 | for (pri = NUMPRI; pri--; ) |
|
|
1213 | while (pendingcnt [pri]) |
451 | { |
1214 | { |
452 | int fd = fdchanges [i]; |
1215 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
453 | ANFD *anfd = anfds + fd; |
|
|
454 | struct ev_io *w; |
|
|
455 | |
1216 | |
456 | int wev = 0; |
1217 | if (expect_true (p->w)) |
457 | |
|
|
458 | for (w = anfd->head; w; w = w->next) |
|
|
459 | wev |= w->events; |
|
|
460 | |
|
|
461 | if (anfd->wev != wev) |
|
|
462 | { |
1218 | { |
463 | method_modify (fd, anfd->wev, wev); |
1219 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
464 | anfd->wev = wev; |
|
|
465 | } |
|
|
466 | } |
|
|
467 | |
1220 | |
468 | fdchangecnt = 0; |
|
|
469 | } |
|
|
470 | |
|
|
471 | static void |
|
|
472 | call_pending () |
|
|
473 | { |
|
|
474 | while (pendingcnt) |
|
|
475 | { |
|
|
476 | ANPENDING *p = pendings + --pendingcnt; |
|
|
477 | |
|
|
478 | if (p->w) |
|
|
479 | { |
|
|
480 | p->w->pending = 0; |
1221 | p->w->pending = 0; |
481 | p->w->cb (p->w, p->events); |
1222 | EV_CB_INVOKE (p->w, p->events); |
482 | } |
1223 | } |
483 | } |
1224 | } |
484 | } |
1225 | } |
485 | |
1226 | |
486 | static void |
1227 | void inline_size |
487 | timers_reify () |
1228 | timers_reify (EV_P) |
488 | { |
1229 | { |
489 | while (timercnt && timers [0]->at <= now) |
1230 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
490 | { |
1231 | { |
491 | struct ev_timer *w = timers [0]; |
1232 | ev_timer *w = (ev_timer *)timers [0]; |
492 | |
1233 | |
493 | event ((W)w, EV_TIMEOUT); |
1234 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
494 | |
1235 | |
495 | /* first reschedule or stop timer */ |
1236 | /* first reschedule or stop timer */ |
496 | if (w->repeat) |
1237 | if (w->repeat) |
497 | { |
1238 | { |
|
|
1239 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1240 | |
498 | w->at = now + w->repeat; |
1241 | ((WT)w)->at += w->repeat; |
499 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1242 | if (((WT)w)->at < mn_now) |
|
|
1243 | ((WT)w)->at = mn_now; |
|
|
1244 | |
500 | downheap ((WT *)timers, timercnt, 0); |
1245 | downheap (timers, timercnt, 0); |
501 | } |
1246 | } |
502 | else |
1247 | else |
503 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1248 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
504 | } |
|
|
505 | } |
|
|
506 | |
1249 | |
507 | static void |
1250 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1251 | } |
|
|
1252 | } |
|
|
1253 | |
|
|
1254 | #if EV_PERIODIC_ENABLE |
|
|
1255 | void inline_size |
508 | periodics_reify () |
1256 | periodics_reify (EV_P) |
509 | { |
1257 | { |
510 | while (periodiccnt && periodics [0]->at <= ev_now) |
1258 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
511 | { |
1259 | { |
512 | struct ev_periodic *w = periodics [0]; |
1260 | ev_periodic *w = (ev_periodic *)periodics [0]; |
|
|
1261 | |
|
|
1262 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
513 | |
1263 | |
514 | /* first reschedule or stop timer */ |
1264 | /* first reschedule or stop timer */ |
515 | if (w->interval) |
1265 | if (w->reschedule_cb) |
516 | { |
1266 | { |
517 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1267 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
518 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1268 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
519 | downheap ((WT *)periodics, periodiccnt, 0); |
1269 | downheap (periodics, periodiccnt, 0); |
|
|
1270 | } |
|
|
1271 | else if (w->interval) |
|
|
1272 | { |
|
|
1273 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1274 | if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval; |
|
|
1275 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1276 | downheap (periodics, periodiccnt, 0); |
520 | } |
1277 | } |
521 | else |
1278 | else |
522 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1279 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
523 | |
1280 | |
524 | event ((W)w, EV_TIMEOUT); |
1281 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
525 | } |
1282 | } |
526 | } |
1283 | } |
527 | |
1284 | |
528 | static void |
1285 | static void noinline |
529 | periodics_reschedule (ev_tstamp diff) |
1286 | periodics_reschedule (EV_P) |
530 | { |
1287 | { |
531 | int i; |
1288 | int i; |
532 | |
1289 | |
533 | /* adjust periodics after time jump */ |
1290 | /* adjust periodics after time jump */ |
534 | for (i = 0; i < periodiccnt; ++i) |
1291 | for (i = 0; i < periodiccnt; ++i) |
535 | { |
1292 | { |
536 | struct ev_periodic *w = periodics [i]; |
1293 | ev_periodic *w = (ev_periodic *)periodics [i]; |
537 | |
1294 | |
|
|
1295 | if (w->reschedule_cb) |
|
|
1296 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
538 | if (w->interval) |
1297 | else if (w->interval) |
|
|
1298 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1299 | } |
|
|
1300 | |
|
|
1301 | /* now rebuild the heap */ |
|
|
1302 | for (i = periodiccnt >> 1; i--; ) |
|
|
1303 | downheap (periodics, periodiccnt, i); |
|
|
1304 | } |
|
|
1305 | #endif |
|
|
1306 | |
|
|
1307 | #if EV_IDLE_ENABLE |
|
|
1308 | void inline_size |
|
|
1309 | idle_reify (EV_P) |
|
|
1310 | { |
|
|
1311 | if (expect_false (idleall)) |
|
|
1312 | { |
|
|
1313 | int pri; |
|
|
1314 | |
|
|
1315 | for (pri = NUMPRI; pri--; ) |
539 | { |
1316 | { |
540 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1317 | if (pendingcnt [pri]) |
|
|
1318 | break; |
541 | |
1319 | |
542 | if (fabs (diff) >= 1e-4) |
1320 | if (idlecnt [pri]) |
543 | { |
1321 | { |
544 | evperiodic_stop (w); |
1322 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
545 | evperiodic_start (w); |
1323 | break; |
546 | |
|
|
547 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
548 | } |
1324 | } |
549 | } |
1325 | } |
550 | } |
1326 | } |
551 | } |
1327 | } |
|
|
1328 | #endif |
552 | |
1329 | |
553 | static void |
1330 | void inline_speed |
554 | time_update () |
1331 | time_update (EV_P_ ev_tstamp max_block) |
555 | { |
1332 | { |
556 | int i; |
1333 | int i; |
557 | |
1334 | |
558 | ev_now = ev_time (); |
1335 | #if EV_USE_MONOTONIC |
559 | |
|
|
560 | if (have_monotonic) |
1336 | if (expect_true (have_monotonic)) |
561 | { |
1337 | { |
562 | ev_tstamp odiff = diff; |
1338 | ev_tstamp odiff = rtmn_diff; |
563 | |
1339 | |
564 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
1340 | mn_now = get_clock (); |
|
|
1341 | |
|
|
1342 | /* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
|
|
1343 | /* interpolate in the meantime */ |
|
|
1344 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
565 | { |
1345 | { |
566 | now = get_clock (); |
1346 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1347 | return; |
|
|
1348 | } |
|
|
1349 | |
|
|
1350 | now_floor = mn_now; |
|
|
1351 | ev_rt_now = ev_time (); |
|
|
1352 | |
|
|
1353 | /* loop a few times, before making important decisions. |
|
|
1354 | * on the choice of "4": one iteration isn't enough, |
|
|
1355 | * in case we get preempted during the calls to |
|
|
1356 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1357 | * to succeed in that case, though. and looping a few more times |
|
|
1358 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1359 | * in the unlikely event of having been preempted here. |
|
|
1360 | */ |
|
|
1361 | for (i = 4; --i; ) |
|
|
1362 | { |
567 | diff = ev_now - now; |
1363 | rtmn_diff = ev_rt_now - mn_now; |
568 | |
1364 | |
569 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1365 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
570 | return; /* all is well */ |
1366 | return; /* all is well */ |
571 | |
1367 | |
572 | ev_now = ev_time (); |
1368 | ev_rt_now = ev_time (); |
|
|
1369 | mn_now = get_clock (); |
|
|
1370 | now_floor = mn_now; |
573 | } |
1371 | } |
574 | |
1372 | |
|
|
1373 | # if EV_PERIODIC_ENABLE |
575 | periodics_reschedule (diff - odiff); |
1374 | periodics_reschedule (EV_A); |
|
|
1375 | # endif |
576 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
1376 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1377 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
577 | } |
1378 | } |
578 | else |
1379 | else |
|
|
1380 | #endif |
579 | { |
1381 | { |
580 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1382 | ev_rt_now = ev_time (); |
|
|
1383 | |
|
|
1384 | if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
581 | { |
1385 | { |
|
|
1386 | #if EV_PERIODIC_ENABLE |
582 | periodics_reschedule (ev_now - now); |
1387 | periodics_reschedule (EV_A); |
583 | |
1388 | #endif |
584 | /* adjust timers. this is easy, as the offset is the same for all */ |
1389 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
585 | for (i = 0; i < timercnt; ++i) |
1390 | for (i = 0; i < timercnt; ++i) |
586 | timers [i]->at += diff; |
1391 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
587 | } |
1392 | } |
588 | |
1393 | |
589 | now = ev_now; |
1394 | mn_now = ev_rt_now; |
590 | } |
1395 | } |
591 | } |
1396 | } |
592 | |
1397 | |
593 | int ev_loop_done; |
1398 | void |
|
|
1399 | ev_ref (EV_P) |
|
|
1400 | { |
|
|
1401 | ++activecnt; |
|
|
1402 | } |
594 | |
1403 | |
|
|
1404 | void |
|
|
1405 | ev_unref (EV_P) |
|
|
1406 | { |
|
|
1407 | --activecnt; |
|
|
1408 | } |
|
|
1409 | |
|
|
1410 | static int loop_done; |
|
|
1411 | |
|
|
1412 | void |
595 | void ev_loop (int flags) |
1413 | ev_loop (EV_P_ int flags) |
596 | { |
1414 | { |
597 | double block; |
1415 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
598 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1416 | ? EVUNLOOP_ONE |
|
|
1417 | : EVUNLOOP_CANCEL; |
|
|
1418 | |
|
|
1419 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
599 | |
1420 | |
600 | do |
1421 | do |
601 | { |
1422 | { |
|
|
1423 | #ifndef _WIN32 |
|
|
1424 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1425 | if (expect_false (getpid () != curpid)) |
|
|
1426 | { |
|
|
1427 | curpid = getpid (); |
|
|
1428 | postfork = 1; |
|
|
1429 | } |
|
|
1430 | #endif |
|
|
1431 | |
|
|
1432 | #if EV_FORK_ENABLE |
|
|
1433 | /* we might have forked, so queue fork handlers */ |
|
|
1434 | if (expect_false (postfork)) |
|
|
1435 | if (forkcnt) |
|
|
1436 | { |
|
|
1437 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1438 | call_pending (EV_A); |
|
|
1439 | } |
|
|
1440 | #endif |
|
|
1441 | |
602 | /* queue check watchers (and execute them) */ |
1442 | /* queue prepare watchers (and execute them) */ |
603 | if (preparecnt) |
1443 | if (expect_false (preparecnt)) |
604 | { |
1444 | { |
605 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1445 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
606 | call_pending (); |
1446 | call_pending (EV_A); |
607 | } |
1447 | } |
608 | |
1448 | |
|
|
1449 | if (expect_false (!activecnt)) |
|
|
1450 | break; |
|
|
1451 | |
|
|
1452 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1453 | if (expect_false (postfork)) |
|
|
1454 | loop_fork (EV_A); |
|
|
1455 | |
609 | /* update fd-related kernel structures */ |
1456 | /* update fd-related kernel structures */ |
610 | fd_reify (); |
1457 | fd_reify (EV_A); |
611 | |
1458 | |
612 | /* calculate blocking time */ |
1459 | /* calculate blocking time */ |
|
|
1460 | { |
|
|
1461 | ev_tstamp block; |
613 | |
1462 | |
614 | /* we only need this for !monotonic clockor timers, but as we basically |
1463 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
615 | always have timers, we just calculate it always */ |
1464 | block = 0.; /* do not block at all */ |
616 | ev_now = ev_time (); |
|
|
617 | |
|
|
618 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
619 | block = 0.; |
|
|
620 | else |
1465 | else |
621 | { |
1466 | { |
|
|
1467 | /* update time to cancel out callback processing overhead */ |
|
|
1468 | time_update (EV_A_ 1e100); |
|
|
1469 | |
622 | block = MAX_BLOCKTIME; |
1470 | block = MAX_BLOCKTIME; |
623 | |
1471 | |
624 | if (timercnt) |
1472 | if (timercnt) |
625 | { |
1473 | { |
626 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1474 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
627 | if (block > to) block = to; |
1475 | if (block > to) block = to; |
628 | } |
1476 | } |
629 | |
1477 | |
|
|
1478 | #if EV_PERIODIC_ENABLE |
630 | if (periodiccnt) |
1479 | if (periodiccnt) |
631 | { |
1480 | { |
632 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1481 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
633 | if (block > to) block = to; |
1482 | if (block > to) block = to; |
634 | } |
1483 | } |
|
|
1484 | #endif |
635 | |
1485 | |
636 | if (block < 0.) block = 0.; |
1486 | if (expect_false (block < 0.)) block = 0.; |
637 | } |
1487 | } |
638 | |
1488 | |
639 | method_poll (block); |
1489 | ++loop_count; |
|
|
1490 | backend_poll (EV_A_ block); |
640 | |
1491 | |
641 | /* update ev_now, do magic */ |
1492 | /* update ev_rt_now, do magic */ |
642 | time_update (); |
1493 | time_update (EV_A_ block); |
|
|
1494 | } |
643 | |
1495 | |
644 | /* queue pending timers and reschedule them */ |
1496 | /* queue pending timers and reschedule them */ |
645 | timers_reify (); /* relative timers called last */ |
1497 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1498 | #if EV_PERIODIC_ENABLE |
646 | periodics_reify (); /* absolute timers called first */ |
1499 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1500 | #endif |
647 | |
1501 | |
|
|
1502 | #if EV_IDLE_ENABLE |
648 | /* queue idle watchers unless io or timers are pending */ |
1503 | /* queue idle watchers unless other events are pending */ |
649 | if (!pendingcnt) |
1504 | idle_reify (EV_A); |
650 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1505 | #endif |
651 | |
1506 | |
652 | /* queue check watchers, to be executed first */ |
1507 | /* queue check watchers, to be executed first */ |
653 | if (checkcnt) |
1508 | if (expect_false (checkcnt)) |
654 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1509 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
655 | |
1510 | |
656 | call_pending (); |
1511 | call_pending (EV_A); |
657 | } |
|
|
658 | while (!ev_loop_done); |
|
|
659 | |
1512 | |
660 | if (ev_loop_done != 2) |
1513 | } |
|
|
1514 | while (expect_true (activecnt && !loop_done)); |
|
|
1515 | |
|
|
1516 | if (loop_done == EVUNLOOP_ONE) |
|
|
1517 | loop_done = EVUNLOOP_CANCEL; |
|
|
1518 | } |
|
|
1519 | |
|
|
1520 | void |
|
|
1521 | ev_unloop (EV_P_ int how) |
|
|
1522 | { |
661 | ev_loop_done = 0; |
1523 | loop_done = how; |
662 | } |
1524 | } |
663 | |
1525 | |
664 | /*****************************************************************************/ |
1526 | /*****************************************************************************/ |
665 | |
1527 | |
666 | static void |
1528 | void inline_size |
667 | wlist_add (WL *head, WL elem) |
1529 | wlist_add (WL *head, WL elem) |
668 | { |
1530 | { |
669 | elem->next = *head; |
1531 | elem->next = *head; |
670 | *head = elem; |
1532 | *head = elem; |
671 | } |
1533 | } |
672 | |
1534 | |
673 | static void |
1535 | void inline_size |
674 | wlist_del (WL *head, WL elem) |
1536 | wlist_del (WL *head, WL elem) |
675 | { |
1537 | { |
676 | while (*head) |
1538 | while (*head) |
677 | { |
1539 | { |
678 | if (*head == elem) |
1540 | if (*head == elem) |
… | |
… | |
683 | |
1545 | |
684 | head = &(*head)->next; |
1546 | head = &(*head)->next; |
685 | } |
1547 | } |
686 | } |
1548 | } |
687 | |
1549 | |
688 | static void |
1550 | void inline_speed |
689 | ev_clear (W w) |
1551 | clear_pending (EV_P_ W w) |
690 | { |
1552 | { |
691 | if (w->pending) |
1553 | if (w->pending) |
692 | { |
1554 | { |
693 | pendings [w->pending - 1].w = 0; |
1555 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
694 | w->pending = 0; |
1556 | w->pending = 0; |
695 | } |
1557 | } |
696 | } |
1558 | } |
697 | |
1559 | |
698 | static void |
1560 | int |
|
|
1561 | ev_clear_pending (EV_P_ void *w) |
|
|
1562 | { |
|
|
1563 | W w_ = (W)w; |
|
|
1564 | int pending = w_->pending; |
|
|
1565 | |
|
|
1566 | if (expect_true (pending)) |
|
|
1567 | { |
|
|
1568 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1569 | w_->pending = 0; |
|
|
1570 | p->w = 0; |
|
|
1571 | return p->events; |
|
|
1572 | } |
|
|
1573 | else |
|
|
1574 | return 0; |
|
|
1575 | } |
|
|
1576 | |
|
|
1577 | void inline_size |
|
|
1578 | pri_adjust (EV_P_ W w) |
|
|
1579 | { |
|
|
1580 | int pri = w->priority; |
|
|
1581 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1582 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1583 | w->priority = pri; |
|
|
1584 | } |
|
|
1585 | |
|
|
1586 | void inline_speed |
699 | ev_start (W w, int active) |
1587 | ev_start (EV_P_ W w, int active) |
700 | { |
1588 | { |
|
|
1589 | pri_adjust (EV_A_ w); |
701 | w->active = active; |
1590 | w->active = active; |
|
|
1591 | ev_ref (EV_A); |
702 | } |
1592 | } |
703 | |
1593 | |
704 | static void |
1594 | void inline_size |
705 | ev_stop (W w) |
1595 | ev_stop (EV_P_ W w) |
706 | { |
1596 | { |
|
|
1597 | ev_unref (EV_A); |
707 | w->active = 0; |
1598 | w->active = 0; |
708 | } |
1599 | } |
709 | |
1600 | |
710 | /*****************************************************************************/ |
1601 | /*****************************************************************************/ |
711 | |
1602 | |
712 | void |
1603 | void noinline |
713 | evio_start (struct ev_io *w) |
1604 | ev_io_start (EV_P_ ev_io *w) |
714 | { |
1605 | { |
715 | if (ev_is_active (w)) |
|
|
716 | return; |
|
|
717 | |
|
|
718 | int fd = w->fd; |
1606 | int fd = w->fd; |
719 | |
1607 | |
|
|
1608 | if (expect_false (ev_is_active (w))) |
|
|
1609 | return; |
|
|
1610 | |
|
|
1611 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1612 | |
720 | ev_start ((W)w, 1); |
1613 | ev_start (EV_A_ (W)w, 1); |
721 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1614 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
722 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1615 | wlist_add (&anfds[fd].head, (WL)w); |
723 | |
1616 | |
724 | ++fdchangecnt; |
1617 | fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
725 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
1618 | w->events &= ~EV_IOFDSET; |
726 | fdchanges [fdchangecnt - 1] = fd; |
|
|
727 | } |
1619 | } |
728 | |
1620 | |
729 | void |
1621 | void noinline |
730 | evio_stop (struct ev_io *w) |
1622 | ev_io_stop (EV_P_ ev_io *w) |
731 | { |
1623 | { |
732 | ev_clear ((W)w); |
1624 | clear_pending (EV_A_ (W)w); |
733 | if (!ev_is_active (w)) |
1625 | if (expect_false (!ev_is_active (w))) |
734 | return; |
1626 | return; |
735 | |
1627 | |
|
|
1628 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1629 | |
736 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1630 | wlist_del (&anfds[w->fd].head, (WL)w); |
737 | ev_stop ((W)w); |
1631 | ev_stop (EV_A_ (W)w); |
738 | |
1632 | |
739 | ++fdchangecnt; |
1633 | fd_change (EV_A_ w->fd, 1); |
740 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
741 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
742 | } |
1634 | } |
743 | |
1635 | |
744 | void |
1636 | void noinline |
745 | evtimer_start (struct ev_timer *w) |
1637 | ev_timer_start (EV_P_ ev_timer *w) |
746 | { |
1638 | { |
747 | if (ev_is_active (w)) |
1639 | if (expect_false (ev_is_active (w))) |
748 | return; |
1640 | return; |
749 | |
1641 | |
750 | w->at += now; |
1642 | ((WT)w)->at += mn_now; |
751 | |
1643 | |
752 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1644 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
753 | |
1645 | |
754 | ev_start ((W)w, ++timercnt); |
1646 | ev_start (EV_A_ (W)w, ++timercnt); |
755 | array_needsize (timers, timermax, timercnt, ); |
1647 | array_needsize (WT, timers, timermax, timercnt, EMPTY2); |
756 | timers [timercnt - 1] = w; |
1648 | timers [timercnt - 1] = (WT)w; |
757 | upheap ((WT *)timers, timercnt - 1); |
1649 | upheap (timers, timercnt - 1); |
758 | } |
|
|
759 | |
1650 | |
760 | void |
1651 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
|
|
1652 | } |
|
|
1653 | |
|
|
1654 | void noinline |
761 | evtimer_stop (struct ev_timer *w) |
1655 | ev_timer_stop (EV_P_ ev_timer *w) |
762 | { |
1656 | { |
763 | ev_clear ((W)w); |
1657 | clear_pending (EV_A_ (W)w); |
764 | if (!ev_is_active (w)) |
1658 | if (expect_false (!ev_is_active (w))) |
765 | return; |
1659 | return; |
766 | |
1660 | |
767 | if (w->active < timercnt--) |
1661 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w)); |
|
|
1662 | |
|
|
1663 | { |
|
|
1664 | int active = ((W)w)->active; |
|
|
1665 | |
|
|
1666 | if (expect_true (--active < --timercnt)) |
768 | { |
1667 | { |
769 | timers [w->active - 1] = timers [timercnt]; |
1668 | timers [active] = timers [timercnt]; |
770 | downheap ((WT *)timers, timercnt, w->active - 1); |
1669 | adjustheap (timers, timercnt, active); |
771 | } |
1670 | } |
|
|
1671 | } |
772 | |
1672 | |
773 | w->at = w->repeat; |
1673 | ((WT)w)->at -= mn_now; |
774 | |
1674 | |
775 | ev_stop ((W)w); |
1675 | ev_stop (EV_A_ (W)w); |
776 | } |
1676 | } |
777 | |
1677 | |
778 | void |
1678 | void noinline |
779 | evtimer_again (struct ev_timer *w) |
1679 | ev_timer_again (EV_P_ ev_timer *w) |
780 | { |
1680 | { |
781 | if (ev_is_active (w)) |
1681 | if (ev_is_active (w)) |
782 | { |
1682 | { |
783 | if (w->repeat) |
1683 | if (w->repeat) |
784 | { |
1684 | { |
785 | w->at = now + w->repeat; |
1685 | ((WT)w)->at = mn_now + w->repeat; |
786 | downheap ((WT *)timers, timercnt, w->active - 1); |
1686 | adjustheap (timers, timercnt, ((W)w)->active - 1); |
787 | } |
1687 | } |
788 | else |
1688 | else |
789 | evtimer_stop (w); |
1689 | ev_timer_stop (EV_A_ w); |
790 | } |
1690 | } |
791 | else if (w->repeat) |
1691 | else if (w->repeat) |
|
|
1692 | { |
|
|
1693 | w->at = w->repeat; |
792 | evtimer_start (w); |
1694 | ev_timer_start (EV_A_ w); |
|
|
1695 | } |
793 | } |
1696 | } |
794 | |
1697 | |
795 | void |
1698 | #if EV_PERIODIC_ENABLE |
|
|
1699 | void noinline |
796 | evperiodic_start (struct ev_periodic *w) |
1700 | ev_periodic_start (EV_P_ ev_periodic *w) |
797 | { |
1701 | { |
798 | if (ev_is_active (w)) |
1702 | if (expect_false (ev_is_active (w))) |
799 | return; |
1703 | return; |
800 | |
1704 | |
801 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1705 | if (w->reschedule_cb) |
802 | |
1706 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1707 | else if (w->interval) |
|
|
1708 | { |
|
|
1709 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
803 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1710 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
804 | if (w->interval) |
|
|
805 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1711 | ((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
|
|
1712 | } |
|
|
1713 | else |
|
|
1714 | ((WT)w)->at = w->offset; |
806 | |
1715 | |
807 | ev_start ((W)w, ++periodiccnt); |
1716 | ev_start (EV_A_ (W)w, ++periodiccnt); |
808 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1717 | array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2); |
809 | periodics [periodiccnt - 1] = w; |
1718 | periodics [periodiccnt - 1] = (WT)w; |
810 | upheap ((WT *)periodics, periodiccnt - 1); |
1719 | upheap (periodics, periodiccnt - 1); |
811 | } |
|
|
812 | |
1720 | |
813 | void |
1721 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
|
|
1722 | } |
|
|
1723 | |
|
|
1724 | void noinline |
814 | evperiodic_stop (struct ev_periodic *w) |
1725 | ev_periodic_stop (EV_P_ ev_periodic *w) |
815 | { |
1726 | { |
816 | ev_clear ((W)w); |
1727 | clear_pending (EV_A_ (W)w); |
817 | if (!ev_is_active (w)) |
1728 | if (expect_false (!ev_is_active (w))) |
818 | return; |
1729 | return; |
819 | |
1730 | |
820 | if (w->active < periodiccnt--) |
1731 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w)); |
|
|
1732 | |
|
|
1733 | { |
|
|
1734 | int active = ((W)w)->active; |
|
|
1735 | |
|
|
1736 | if (expect_true (--active < --periodiccnt)) |
821 | { |
1737 | { |
822 | periodics [w->active - 1] = periodics [periodiccnt]; |
1738 | periodics [active] = periodics [periodiccnt]; |
823 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1739 | adjustheap (periodics, periodiccnt, active); |
824 | } |
1740 | } |
|
|
1741 | } |
825 | |
1742 | |
826 | ev_stop ((W)w); |
1743 | ev_stop (EV_A_ (W)w); |
827 | } |
1744 | } |
828 | |
1745 | |
829 | void |
1746 | void noinline |
|
|
1747 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1748 | { |
|
|
1749 | /* TODO: use adjustheap and recalculation */ |
|
|
1750 | ev_periodic_stop (EV_A_ w); |
|
|
1751 | ev_periodic_start (EV_A_ w); |
|
|
1752 | } |
|
|
1753 | #endif |
|
|
1754 | |
|
|
1755 | #ifndef SA_RESTART |
|
|
1756 | # define SA_RESTART 0 |
|
|
1757 | #endif |
|
|
1758 | |
|
|
1759 | void noinline |
830 | evsignal_start (struct ev_signal *w) |
1760 | ev_signal_start (EV_P_ ev_signal *w) |
831 | { |
1761 | { |
|
|
1762 | #if EV_MULTIPLICITY |
|
|
1763 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1764 | #endif |
832 | if (ev_is_active (w)) |
1765 | if (expect_false (ev_is_active (w))) |
833 | return; |
1766 | return; |
834 | |
1767 | |
835 | ev_start ((W)w, 1); |
1768 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1769 | |
|
|
1770 | { |
|
|
1771 | #ifndef _WIN32 |
|
|
1772 | sigset_t full, prev; |
|
|
1773 | sigfillset (&full); |
|
|
1774 | sigprocmask (SIG_SETMASK, &full, &prev); |
|
|
1775 | #endif |
|
|
1776 | |
836 | array_needsize (signals, signalmax, w->signum, signals_init); |
1777 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
|
|
1778 | |
|
|
1779 | #ifndef _WIN32 |
|
|
1780 | sigprocmask (SIG_SETMASK, &prev, 0); |
|
|
1781 | #endif |
|
|
1782 | } |
|
|
1783 | |
|
|
1784 | ev_start (EV_A_ (W)w, 1); |
837 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1785 | wlist_add (&signals [w->signum - 1].head, (WL)w); |
838 | |
1786 | |
839 | if (!w->next) |
1787 | if (!((WL)w)->next) |
840 | { |
1788 | { |
|
|
1789 | #if _WIN32 |
|
|
1790 | signal (w->signum, sighandler); |
|
|
1791 | #else |
841 | struct sigaction sa; |
1792 | struct sigaction sa; |
842 | sa.sa_handler = sighandler; |
1793 | sa.sa_handler = sighandler; |
843 | sigfillset (&sa.sa_mask); |
1794 | sigfillset (&sa.sa_mask); |
844 | sa.sa_flags = 0; |
1795 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
845 | sigaction (w->signum, &sa, 0); |
1796 | sigaction (w->signum, &sa, 0); |
|
|
1797 | #endif |
846 | } |
1798 | } |
847 | } |
1799 | } |
848 | |
1800 | |
849 | void |
1801 | void noinline |
850 | evsignal_stop (struct ev_signal *w) |
1802 | ev_signal_stop (EV_P_ ev_signal *w) |
851 | { |
1803 | { |
852 | ev_clear ((W)w); |
1804 | clear_pending (EV_A_ (W)w); |
853 | if (!ev_is_active (w)) |
1805 | if (expect_false (!ev_is_active (w))) |
854 | return; |
1806 | return; |
855 | |
1807 | |
856 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1808 | wlist_del (&signals [w->signum - 1].head, (WL)w); |
857 | ev_stop ((W)w); |
1809 | ev_stop (EV_A_ (W)w); |
858 | |
1810 | |
859 | if (!signals [w->signum - 1].head) |
1811 | if (!signals [w->signum - 1].head) |
860 | signal (w->signum, SIG_DFL); |
1812 | signal (w->signum, SIG_DFL); |
861 | } |
1813 | } |
862 | |
1814 | |
863 | void evidle_start (struct ev_idle *w) |
1815 | void |
|
|
1816 | ev_child_start (EV_P_ ev_child *w) |
864 | { |
1817 | { |
|
|
1818 | #if EV_MULTIPLICITY |
|
|
1819 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1820 | #endif |
865 | if (ev_is_active (w)) |
1821 | if (expect_false (ev_is_active (w))) |
866 | return; |
1822 | return; |
867 | |
1823 | |
868 | ev_start ((W)w, ++idlecnt); |
1824 | ev_start (EV_A_ (W)w, 1); |
869 | array_needsize (idles, idlemax, idlecnt, ); |
1825 | wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
870 | idles [idlecnt - 1] = w; |
|
|
871 | } |
1826 | } |
872 | |
1827 | |
873 | void evidle_stop (struct ev_idle *w) |
1828 | void |
|
|
1829 | ev_child_stop (EV_P_ ev_child *w) |
874 | { |
1830 | { |
875 | ev_clear ((W)w); |
1831 | clear_pending (EV_A_ (W)w); |
876 | if (ev_is_active (w)) |
1832 | if (expect_false (!ev_is_active (w))) |
877 | return; |
1833 | return; |
878 | |
1834 | |
879 | idles [w->active - 1] = idles [--idlecnt]; |
1835 | wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
880 | ev_stop ((W)w); |
1836 | ev_stop (EV_A_ (W)w); |
881 | } |
1837 | } |
882 | |
1838 | |
|
|
1839 | #if EV_STAT_ENABLE |
|
|
1840 | |
|
|
1841 | # ifdef _WIN32 |
|
|
1842 | # undef lstat |
|
|
1843 | # define lstat(a,b) _stati64 (a,b) |
|
|
1844 | # endif |
|
|
1845 | |
|
|
1846 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
1847 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
1848 | |
|
|
1849 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
1850 | |
|
|
1851 | #if EV_USE_INOTIFY |
|
|
1852 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
1853 | |
|
|
1854 | static void noinline |
|
|
1855 | infy_add (EV_P_ ev_stat *w) |
|
|
1856 | { |
|
|
1857 | 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); |
|
|
1858 | |
|
|
1859 | if (w->wd < 0) |
|
|
1860 | { |
|
|
1861 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
1862 | |
|
|
1863 | /* monitor some parent directory for speedup hints */ |
|
|
1864 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
1865 | { |
|
|
1866 | char path [4096]; |
|
|
1867 | strcpy (path, w->path); |
|
|
1868 | |
|
|
1869 | do |
|
|
1870 | { |
|
|
1871 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
1872 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
1873 | |
|
|
1874 | char *pend = strrchr (path, '/'); |
|
|
1875 | |
|
|
1876 | if (!pend) |
|
|
1877 | break; /* whoops, no '/', complain to your admin */ |
|
|
1878 | |
|
|
1879 | *pend = 0; |
|
|
1880 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
1881 | } |
|
|
1882 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
1883 | } |
|
|
1884 | } |
|
|
1885 | else |
|
|
1886 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
1887 | |
|
|
1888 | if (w->wd >= 0) |
|
|
1889 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
1890 | } |
|
|
1891 | |
|
|
1892 | static void noinline |
|
|
1893 | infy_del (EV_P_ ev_stat *w) |
|
|
1894 | { |
|
|
1895 | int slot; |
|
|
1896 | int wd = w->wd; |
|
|
1897 | |
|
|
1898 | if (wd < 0) |
|
|
1899 | return; |
|
|
1900 | |
|
|
1901 | w->wd = -2; |
|
|
1902 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
1903 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
1904 | |
|
|
1905 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
1906 | inotify_rm_watch (fs_fd, wd); |
|
|
1907 | } |
|
|
1908 | |
|
|
1909 | static void noinline |
|
|
1910 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
1911 | { |
|
|
1912 | if (slot < 0) |
|
|
1913 | /* overflow, need to check for all hahs slots */ |
|
|
1914 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1915 | infy_wd (EV_A_ slot, wd, ev); |
|
|
1916 | else |
|
|
1917 | { |
|
|
1918 | WL w_; |
|
|
1919 | |
|
|
1920 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
1921 | { |
|
|
1922 | ev_stat *w = (ev_stat *)w_; |
|
|
1923 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
1924 | |
|
|
1925 | if (w->wd == wd || wd == -1) |
|
|
1926 | { |
|
|
1927 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
1928 | { |
|
|
1929 | w->wd = -1; |
|
|
1930 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1931 | } |
|
|
1932 | |
|
|
1933 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
1934 | } |
|
|
1935 | } |
|
|
1936 | } |
|
|
1937 | } |
|
|
1938 | |
|
|
1939 | static void |
|
|
1940 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
1941 | { |
|
|
1942 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
1943 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
1944 | int ofs; |
|
|
1945 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
1946 | |
|
|
1947 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
1948 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
1949 | } |
|
|
1950 | |
|
|
1951 | void inline_size |
|
|
1952 | infy_init (EV_P) |
|
|
1953 | { |
|
|
1954 | if (fs_fd != -2) |
|
|
1955 | return; |
|
|
1956 | |
|
|
1957 | fs_fd = inotify_init (); |
|
|
1958 | |
|
|
1959 | if (fs_fd >= 0) |
|
|
1960 | { |
|
|
1961 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
1962 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
1963 | ev_io_start (EV_A_ &fs_w); |
|
|
1964 | } |
|
|
1965 | } |
|
|
1966 | |
|
|
1967 | void inline_size |
|
|
1968 | infy_fork (EV_P) |
|
|
1969 | { |
|
|
1970 | int slot; |
|
|
1971 | |
|
|
1972 | if (fs_fd < 0) |
|
|
1973 | return; |
|
|
1974 | |
|
|
1975 | close (fs_fd); |
|
|
1976 | fs_fd = inotify_init (); |
|
|
1977 | |
|
|
1978 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1979 | { |
|
|
1980 | WL w_ = fs_hash [slot].head; |
|
|
1981 | fs_hash [slot].head = 0; |
|
|
1982 | |
|
|
1983 | while (w_) |
|
|
1984 | { |
|
|
1985 | ev_stat *w = (ev_stat *)w_; |
|
|
1986 | w_ = w_->next; /* lets us add this watcher */ |
|
|
1987 | |
|
|
1988 | w->wd = -1; |
|
|
1989 | |
|
|
1990 | if (fs_fd >= 0) |
|
|
1991 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1992 | else |
|
|
1993 | ev_timer_start (EV_A_ &w->timer); |
|
|
1994 | } |
|
|
1995 | |
|
|
1996 | } |
|
|
1997 | } |
|
|
1998 | |
|
|
1999 | #endif |
|
|
2000 | |
|
|
2001 | void |
|
|
2002 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
2003 | { |
|
|
2004 | if (lstat (w->path, &w->attr) < 0) |
|
|
2005 | w->attr.st_nlink = 0; |
|
|
2006 | else if (!w->attr.st_nlink) |
|
|
2007 | w->attr.st_nlink = 1; |
|
|
2008 | } |
|
|
2009 | |
|
|
2010 | static void noinline |
|
|
2011 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
2012 | { |
|
|
2013 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
2014 | |
|
|
2015 | /* we copy this here each the time so that */ |
|
|
2016 | /* prev has the old value when the callback gets invoked */ |
|
|
2017 | w->prev = w->attr; |
|
|
2018 | ev_stat_stat (EV_A_ w); |
|
|
2019 | |
|
|
2020 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
2021 | if ( |
|
|
2022 | w->prev.st_dev != w->attr.st_dev |
|
|
2023 | || w->prev.st_ino != w->attr.st_ino |
|
|
2024 | || w->prev.st_mode != w->attr.st_mode |
|
|
2025 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
2026 | || w->prev.st_uid != w->attr.st_uid |
|
|
2027 | || w->prev.st_gid != w->attr.st_gid |
|
|
2028 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
2029 | || w->prev.st_size != w->attr.st_size |
|
|
2030 | || w->prev.st_atime != w->attr.st_atime |
|
|
2031 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
2032 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2033 | ) { |
|
|
2034 | #if EV_USE_INOTIFY |
|
|
2035 | infy_del (EV_A_ w); |
|
|
2036 | infy_add (EV_A_ w); |
|
|
2037 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2038 | #endif |
|
|
2039 | |
|
|
2040 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2041 | } |
|
|
2042 | } |
|
|
2043 | |
|
|
2044 | void |
|
|
2045 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2046 | { |
|
|
2047 | if (expect_false (ev_is_active (w))) |
|
|
2048 | return; |
|
|
2049 | |
|
|
2050 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2051 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2052 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2053 | |
|
|
2054 | ev_stat_stat (EV_A_ w); |
|
|
2055 | |
|
|
2056 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2057 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2058 | |
|
|
2059 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2060 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2061 | |
|
|
2062 | #if EV_USE_INOTIFY |
|
|
2063 | infy_init (EV_A); |
|
|
2064 | |
|
|
2065 | if (fs_fd >= 0) |
|
|
2066 | infy_add (EV_A_ w); |
|
|
2067 | else |
|
|
2068 | #endif |
|
|
2069 | ev_timer_start (EV_A_ &w->timer); |
|
|
2070 | |
|
|
2071 | ev_start (EV_A_ (W)w, 1); |
|
|
2072 | } |
|
|
2073 | |
|
|
2074 | void |
|
|
2075 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2076 | { |
|
|
2077 | clear_pending (EV_A_ (W)w); |
|
|
2078 | if (expect_false (!ev_is_active (w))) |
|
|
2079 | return; |
|
|
2080 | |
|
|
2081 | #if EV_USE_INOTIFY |
|
|
2082 | infy_del (EV_A_ w); |
|
|
2083 | #endif |
|
|
2084 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2085 | |
|
|
2086 | ev_stop (EV_A_ (W)w); |
|
|
2087 | } |
|
|
2088 | #endif |
|
|
2089 | |
|
|
2090 | #if EV_IDLE_ENABLE |
|
|
2091 | void |
|
|
2092 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2093 | { |
|
|
2094 | if (expect_false (ev_is_active (w))) |
|
|
2095 | return; |
|
|
2096 | |
|
|
2097 | pri_adjust (EV_A_ (W)w); |
|
|
2098 | |
|
|
2099 | { |
|
|
2100 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2101 | |
|
|
2102 | ++idleall; |
|
|
2103 | ev_start (EV_A_ (W)w, active); |
|
|
2104 | |
|
|
2105 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2106 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2107 | } |
|
|
2108 | } |
|
|
2109 | |
|
|
2110 | void |
|
|
2111 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2112 | { |
|
|
2113 | clear_pending (EV_A_ (W)w); |
|
|
2114 | if (expect_false (!ev_is_active (w))) |
|
|
2115 | return; |
|
|
2116 | |
|
|
2117 | { |
|
|
2118 | int active = ((W)w)->active; |
|
|
2119 | |
|
|
2120 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2121 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
|
|
2122 | |
|
|
2123 | ev_stop (EV_A_ (W)w); |
|
|
2124 | --idleall; |
|
|
2125 | } |
|
|
2126 | } |
|
|
2127 | #endif |
|
|
2128 | |
|
|
2129 | void |
883 | void evprepare_start (struct ev_prepare *w) |
2130 | ev_prepare_start (EV_P_ ev_prepare *w) |
884 | { |
2131 | { |
885 | if (ev_is_active (w)) |
2132 | if (expect_false (ev_is_active (w))) |
886 | return; |
2133 | return; |
887 | |
2134 | |
888 | ev_start ((W)w, ++preparecnt); |
2135 | ev_start (EV_A_ (W)w, ++preparecnt); |
889 | array_needsize (prepares, preparemax, preparecnt, ); |
2136 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
890 | prepares [preparecnt - 1] = w; |
2137 | prepares [preparecnt - 1] = w; |
891 | } |
2138 | } |
892 | |
2139 | |
|
|
2140 | void |
893 | void evprepare_stop (struct ev_prepare *w) |
2141 | ev_prepare_stop (EV_P_ ev_prepare *w) |
894 | { |
2142 | { |
895 | ev_clear ((W)w); |
2143 | clear_pending (EV_A_ (W)w); |
896 | if (ev_is_active (w)) |
2144 | if (expect_false (!ev_is_active (w))) |
897 | return; |
2145 | return; |
898 | |
2146 | |
|
|
2147 | { |
|
|
2148 | int active = ((W)w)->active; |
899 | prepares [w->active - 1] = prepares [--preparecnt]; |
2149 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2150 | ((W)prepares [active - 1])->active = active; |
|
|
2151 | } |
|
|
2152 | |
900 | ev_stop ((W)w); |
2153 | ev_stop (EV_A_ (W)w); |
901 | } |
2154 | } |
902 | |
2155 | |
|
|
2156 | void |
903 | void evcheck_start (struct ev_check *w) |
2157 | ev_check_start (EV_P_ ev_check *w) |
904 | { |
2158 | { |
905 | if (ev_is_active (w)) |
2159 | if (expect_false (ev_is_active (w))) |
906 | return; |
2160 | return; |
907 | |
2161 | |
908 | ev_start ((W)w, ++checkcnt); |
2162 | ev_start (EV_A_ (W)w, ++checkcnt); |
909 | array_needsize (checks, checkmax, checkcnt, ); |
2163 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
910 | checks [checkcnt - 1] = w; |
2164 | checks [checkcnt - 1] = w; |
911 | } |
2165 | } |
912 | |
2166 | |
|
|
2167 | void |
913 | void evcheck_stop (struct ev_check *w) |
2168 | ev_check_stop (EV_P_ ev_check *w) |
914 | { |
2169 | { |
915 | ev_clear ((W)w); |
2170 | clear_pending (EV_A_ (W)w); |
916 | if (ev_is_active (w)) |
2171 | if (expect_false (!ev_is_active (w))) |
917 | return; |
2172 | return; |
918 | |
2173 | |
|
|
2174 | { |
|
|
2175 | int active = ((W)w)->active; |
919 | checks [w->active - 1] = checks [--checkcnt]; |
2176 | checks [active - 1] = checks [--checkcnt]; |
|
|
2177 | ((W)checks [active - 1])->active = active; |
|
|
2178 | } |
|
|
2179 | |
920 | ev_stop ((W)w); |
2180 | ev_stop (EV_A_ (W)w); |
921 | } |
2181 | } |
922 | |
2182 | |
923 | void evchild_start (struct ev_child *w) |
2183 | #if EV_EMBED_ENABLE |
|
|
2184 | void noinline |
|
|
2185 | ev_embed_sweep (EV_P_ ev_embed *w) |
924 | { |
2186 | { |
|
|
2187 | ev_loop (w->other, EVLOOP_NONBLOCK); |
|
|
2188 | } |
|
|
2189 | |
|
|
2190 | static void |
|
|
2191 | embed_io_cb (EV_P_ ev_io *io, int revents) |
|
|
2192 | { |
|
|
2193 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2194 | |
925 | if (ev_is_active (w)) |
2195 | if (ev_cb (w)) |
926 | return; |
2196 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2197 | else |
|
|
2198 | ev_embed_sweep (loop, w); |
|
|
2199 | } |
927 | |
2200 | |
|
|
2201 | static void |
|
|
2202 | embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
|
|
2203 | { |
|
|
2204 | ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
|
|
2205 | |
|
|
2206 | fd_reify (w->other); |
|
|
2207 | } |
|
|
2208 | |
|
|
2209 | void |
|
|
2210 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2211 | { |
|
|
2212 | if (expect_false (ev_is_active (w))) |
|
|
2213 | return; |
|
|
2214 | |
|
|
2215 | { |
|
|
2216 | struct ev_loop *loop = w->other; |
|
|
2217 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2218 | ev_io_init (&w->io, embed_io_cb, backend_fd, EV_WRITE); |
|
|
2219 | } |
|
|
2220 | |
|
|
2221 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2222 | ev_io_start (EV_A_ &w->io); |
|
|
2223 | |
|
|
2224 | ev_prepare_init (&w->prepare, embed_prepare_cb); |
|
|
2225 | ev_set_priority (&w->prepare, EV_MINPRI); |
|
|
2226 | ev_prepare_start (EV_A_ &w->prepare); |
|
|
2227 | |
928 | ev_start ((W)w, 1); |
2228 | ev_start (EV_A_ (W)w, 1); |
929 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
930 | } |
2229 | } |
931 | |
2230 | |
932 | void evchild_stop (struct ev_child *w) |
2231 | void |
|
|
2232 | ev_embed_stop (EV_P_ ev_embed *w) |
933 | { |
2233 | { |
934 | ev_clear ((W)w); |
2234 | clear_pending (EV_A_ (W)w); |
935 | if (ev_is_active (w)) |
2235 | if (expect_false (!ev_is_active (w))) |
936 | return; |
2236 | return; |
937 | |
2237 | |
938 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2238 | ev_io_stop (EV_A_ &w->io); |
|
|
2239 | ev_prepare_stop (EV_A_ &w->prepare); |
|
|
2240 | |
939 | ev_stop ((W)w); |
2241 | ev_stop (EV_A_ (W)w); |
940 | } |
2242 | } |
|
|
2243 | #endif |
|
|
2244 | |
|
|
2245 | #if EV_FORK_ENABLE |
|
|
2246 | void |
|
|
2247 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2248 | { |
|
|
2249 | if (expect_false (ev_is_active (w))) |
|
|
2250 | return; |
|
|
2251 | |
|
|
2252 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2253 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2254 | forks [forkcnt - 1] = w; |
|
|
2255 | } |
|
|
2256 | |
|
|
2257 | void |
|
|
2258 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2259 | { |
|
|
2260 | clear_pending (EV_A_ (W)w); |
|
|
2261 | if (expect_false (!ev_is_active (w))) |
|
|
2262 | return; |
|
|
2263 | |
|
|
2264 | { |
|
|
2265 | int active = ((W)w)->active; |
|
|
2266 | forks [active - 1] = forks [--forkcnt]; |
|
|
2267 | ((W)forks [active - 1])->active = active; |
|
|
2268 | } |
|
|
2269 | |
|
|
2270 | ev_stop (EV_A_ (W)w); |
|
|
2271 | } |
|
|
2272 | #endif |
941 | |
2273 | |
942 | /*****************************************************************************/ |
2274 | /*****************************************************************************/ |
943 | |
2275 | |
944 | struct ev_once |
2276 | struct ev_once |
945 | { |
2277 | { |
946 | struct ev_io io; |
2278 | ev_io io; |
947 | struct ev_timer to; |
2279 | ev_timer to; |
948 | void (*cb)(int revents, void *arg); |
2280 | void (*cb)(int revents, void *arg); |
949 | void *arg; |
2281 | void *arg; |
950 | }; |
2282 | }; |
951 | |
2283 | |
952 | static void |
2284 | static void |
953 | once_cb (struct ev_once *once, int revents) |
2285 | once_cb (EV_P_ struct ev_once *once, int revents) |
954 | { |
2286 | { |
955 | void (*cb)(int revents, void *arg) = once->cb; |
2287 | void (*cb)(int revents, void *arg) = once->cb; |
956 | void *arg = once->arg; |
2288 | void *arg = once->arg; |
957 | |
2289 | |
958 | evio_stop (&once->io); |
2290 | ev_io_stop (EV_A_ &once->io); |
959 | evtimer_stop (&once->to); |
2291 | ev_timer_stop (EV_A_ &once->to); |
960 | free (once); |
2292 | ev_free (once); |
961 | |
2293 | |
962 | cb (revents, arg); |
2294 | cb (revents, arg); |
963 | } |
2295 | } |
964 | |
2296 | |
965 | static void |
2297 | static void |
966 | once_cb_io (struct ev_io *w, int revents) |
2298 | once_cb_io (EV_P_ ev_io *w, int revents) |
967 | { |
2299 | { |
968 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2300 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
969 | } |
2301 | } |
970 | |
2302 | |
971 | static void |
2303 | static void |
972 | once_cb_to (struct ev_timer *w, int revents) |
2304 | once_cb_to (EV_P_ ev_timer *w, int revents) |
973 | { |
2305 | { |
974 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2306 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
975 | } |
2307 | } |
976 | |
2308 | |
977 | void |
2309 | void |
978 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2310 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
979 | { |
2311 | { |
980 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
2312 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
981 | |
2313 | |
982 | if (!once) |
2314 | if (expect_false (!once)) |
983 | cb (EV_ERROR, arg); |
2315 | { |
984 | else |
2316 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
|
|
2317 | return; |
985 | { |
2318 | } |
|
|
2319 | |
986 | once->cb = cb; |
2320 | once->cb = cb; |
987 | once->arg = arg; |
2321 | once->arg = arg; |
988 | |
2322 | |
989 | evw_init (&once->io, once_cb_io); |
2323 | ev_init (&once->io, once_cb_io); |
990 | |
|
|
991 | if (fd >= 0) |
2324 | if (fd >= 0) |
992 | { |
2325 | { |
993 | evio_set (&once->io, fd, events); |
2326 | ev_io_set (&once->io, fd, events); |
994 | evio_start (&once->io); |
2327 | ev_io_start (EV_A_ &once->io); |
995 | } |
2328 | } |
996 | |
2329 | |
997 | evw_init (&once->to, once_cb_to); |
2330 | ev_init (&once->to, once_cb_to); |
998 | |
|
|
999 | if (timeout >= 0.) |
2331 | if (timeout >= 0.) |
1000 | { |
2332 | { |
1001 | evtimer_set (&once->to, timeout, 0.); |
2333 | ev_timer_set (&once->to, timeout, 0.); |
1002 | evtimer_start (&once->to); |
2334 | ev_timer_start (EV_A_ &once->to); |
1003 | } |
|
|
1004 | } |
|
|
1005 | } |
|
|
1006 | |
|
|
1007 | /*****************************************************************************/ |
|
|
1008 | |
|
|
1009 | #if 0 |
|
|
1010 | |
|
|
1011 | struct ev_io wio; |
|
|
1012 | |
|
|
1013 | static void |
|
|
1014 | sin_cb (struct ev_io *w, int revents) |
|
|
1015 | { |
|
|
1016 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1017 | } |
|
|
1018 | |
|
|
1019 | static void |
|
|
1020 | ocb (struct ev_timer *w, int revents) |
|
|
1021 | { |
|
|
1022 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1023 | evtimer_stop (w); |
|
|
1024 | evtimer_start (w); |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | static void |
|
|
1028 | scb (struct ev_signal *w, int revents) |
|
|
1029 | { |
|
|
1030 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1031 | evio_stop (&wio); |
|
|
1032 | evio_start (&wio); |
|
|
1033 | } |
|
|
1034 | |
|
|
1035 | static void |
|
|
1036 | gcb (struct ev_signal *w, int revents) |
|
|
1037 | { |
|
|
1038 | fprintf (stderr, "generic %x\n", revents); |
|
|
1039 | |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | int main (void) |
|
|
1043 | { |
|
|
1044 | ev_init (0); |
|
|
1045 | |
|
|
1046 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
1047 | evio_start (&wio); |
|
|
1048 | |
|
|
1049 | struct ev_timer t[10000]; |
|
|
1050 | |
|
|
1051 | #if 0 |
|
|
1052 | int i; |
|
|
1053 | for (i = 0; i < 10000; ++i) |
|
|
1054 | { |
2335 | } |
1055 | struct ev_timer *w = t + i; |
|
|
1056 | evw_init (w, ocb, i); |
|
|
1057 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1058 | evtimer_start (w); |
|
|
1059 | if (drand48 () < 0.5) |
|
|
1060 | evtimer_stop (w); |
|
|
1061 | } |
|
|
1062 | #endif |
|
|
1063 | |
|
|
1064 | struct ev_timer t1; |
|
|
1065 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1066 | evtimer_start (&t1); |
|
|
1067 | |
|
|
1068 | struct ev_signal sig; |
|
|
1069 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1070 | evsignal_start (&sig); |
|
|
1071 | |
|
|
1072 | struct ev_check cw; |
|
|
1073 | evcheck_init (&cw, gcb); |
|
|
1074 | evcheck_start (&cw); |
|
|
1075 | |
|
|
1076 | struct ev_idle iw; |
|
|
1077 | evidle_init (&iw, gcb); |
|
|
1078 | evidle_start (&iw); |
|
|
1079 | |
|
|
1080 | ev_loop (0); |
|
|
1081 | |
|
|
1082 | return 0; |
|
|
1083 | } |
2336 | } |
1084 | |
2337 | |
|
|
2338 | #if EV_MULTIPLICITY |
|
|
2339 | #include "ev_wrap.h" |
1085 | #endif |
2340 | #endif |
1086 | |
2341 | |
|
|
2342 | #ifdef __cplusplus |
|
|
2343 | } |
|
|
2344 | #endif |
1087 | |
2345 | |
1088 | |
|
|
1089 | |
|
|