1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
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31 | |
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32 | #ifdef __cplusplus |
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33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
29 | #if EV_USE_CONFIG_H |
37 | # ifdef EV_CONFIG_H |
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38 | # include EV_CONFIG_H |
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39 | # else |
30 | # include "config.h" |
40 | # include "config.h" |
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41 | # endif |
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42 | |
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43 | # if HAVE_CLOCK_GETTIME |
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44 | # ifndef EV_USE_MONOTONIC |
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45 | # define EV_USE_MONOTONIC 1 |
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46 | # endif |
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47 | # ifndef EV_USE_REALTIME |
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48 | # define EV_USE_REALTIME 1 |
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49 | # endif |
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50 | # else |
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51 | # ifndef EV_USE_MONOTONIC |
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52 | # define EV_USE_MONOTONIC 0 |
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53 | # endif |
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54 | # ifndef EV_USE_REALTIME |
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55 | # define EV_USE_REALTIME 0 |
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56 | # endif |
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57 | # endif |
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58 | |
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59 | # ifndef EV_USE_SELECT |
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60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
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61 | # define EV_USE_SELECT 1 |
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62 | # else |
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63 | # define EV_USE_SELECT 0 |
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64 | # endif |
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65 | # endif |
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66 | |
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67 | # ifndef EV_USE_POLL |
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68 | # if HAVE_POLL && HAVE_POLL_H |
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69 | # define EV_USE_POLL 1 |
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70 | # else |
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71 | # define EV_USE_POLL 0 |
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72 | # endif |
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73 | # endif |
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74 | |
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75 | # ifndef EV_USE_EPOLL |
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76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
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77 | # define EV_USE_EPOLL 1 |
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78 | # else |
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79 | # define EV_USE_EPOLL 0 |
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80 | # endif |
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81 | # endif |
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82 | |
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83 | # ifndef EV_USE_KQUEUE |
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84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
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85 | # define EV_USE_KQUEUE 1 |
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86 | # else |
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87 | # define EV_USE_KQUEUE 0 |
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88 | # endif |
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89 | # endif |
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90 | |
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91 | # ifndef EV_USE_PORT |
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92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
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93 | # define EV_USE_PORT 1 |
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94 | # else |
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95 | # define EV_USE_PORT 0 |
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96 | # endif |
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97 | # endif |
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98 | |
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99 | # ifndef EV_USE_INOTIFY |
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100 | # if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
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101 | # define EV_USE_INOTIFY 1 |
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102 | # else |
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103 | # define EV_USE_INOTIFY 0 |
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104 | # endif |
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105 | # endif |
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106 | |
31 | #endif |
107 | #endif |
32 | |
108 | |
33 | #include <math.h> |
109 | #include <math.h> |
34 | #include <stdlib.h> |
110 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
111 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
112 | #include <stddef.h> |
39 | |
113 | |
40 | #include <stdio.h> |
114 | #include <stdio.h> |
41 | |
115 | |
42 | #include <assert.h> |
116 | #include <assert.h> |
43 | #include <errno.h> |
117 | #include <errno.h> |
44 | #include <sys/types.h> |
118 | #include <sys/types.h> |
45 | #include <sys/wait.h> |
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46 | #include <sys/time.h> |
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47 | #include <time.h> |
119 | #include <time.h> |
48 | |
120 | |
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121 | #include <signal.h> |
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122 | |
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123 | #ifdef EV_H |
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124 | # include EV_H |
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125 | #else |
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126 | # include "ev.h" |
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127 | #endif |
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128 | |
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129 | #ifndef _WIN32 |
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130 | # include <sys/time.h> |
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131 | # include <sys/wait.h> |
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132 | # include <unistd.h> |
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133 | #else |
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134 | # define WIN32_LEAN_AND_MEAN |
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135 | # include <windows.h> |
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136 | # ifndef EV_SELECT_IS_WINSOCKET |
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137 | # define EV_SELECT_IS_WINSOCKET 1 |
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138 | # endif |
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139 | #endif |
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140 | |
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141 | /**/ |
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142 | |
49 | #ifndef EV_USE_MONOTONIC |
143 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
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51 | # define EV_USE_MONOTONIC 1 |
144 | # define EV_USE_MONOTONIC 0 |
52 | # endif |
145 | #endif |
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146 | |
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147 | #ifndef EV_USE_REALTIME |
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148 | # define EV_USE_REALTIME 0 |
53 | #endif |
149 | #endif |
54 | |
150 | |
55 | #ifndef EV_USE_SELECT |
151 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
152 | # define EV_USE_SELECT 1 |
57 | #endif |
153 | #endif |
58 | |
154 | |
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155 | #ifndef EV_USE_POLL |
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156 | # ifdef _WIN32 |
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157 | # define EV_USE_POLL 0 |
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158 | # else |
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159 | # define EV_USE_POLL 1 |
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160 | # endif |
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161 | #endif |
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162 | |
59 | #ifndef EV_USE_EPOLL |
163 | #ifndef EV_USE_EPOLL |
60 | # define EV_USE_EPOLL 0 |
164 | # define EV_USE_EPOLL 0 |
61 | #endif |
165 | #endif |
62 | |
166 | |
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167 | #ifndef EV_USE_KQUEUE |
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168 | # define EV_USE_KQUEUE 0 |
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169 | #endif |
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170 | |
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171 | #ifndef EV_USE_PORT |
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172 | # define EV_USE_PORT 0 |
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173 | #endif |
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174 | |
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175 | #ifndef EV_USE_INOTIFY |
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176 | # define EV_USE_INOTIFY 0 |
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177 | #endif |
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178 | |
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179 | #ifndef EV_PID_HASHSIZE |
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180 | # if EV_MINIMAL |
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181 | # define EV_PID_HASHSIZE 1 |
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182 | # else |
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183 | # define EV_PID_HASHSIZE 16 |
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184 | # endif |
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185 | #endif |
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186 | |
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187 | #ifndef EV_INOTIFY_HASHSIZE |
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188 | # if EV_MINIMAL |
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189 | # define EV_INOTIFY_HASHSIZE 1 |
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190 | # else |
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191 | # define EV_INOTIFY_HASHSIZE 16 |
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192 | # endif |
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193 | #endif |
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194 | |
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195 | /**/ |
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196 | |
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197 | #ifndef CLOCK_MONOTONIC |
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198 | # undef EV_USE_MONOTONIC |
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199 | # define EV_USE_MONOTONIC 0 |
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200 | #endif |
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201 | |
63 | #ifndef CLOCK_REALTIME |
202 | #ifndef CLOCK_REALTIME |
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203 | # undef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 0 |
204 | # define EV_USE_REALTIME 0 |
65 | #endif |
205 | #endif |
66 | #ifndef EV_USE_REALTIME |
206 | |
67 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
207 | #if EV_SELECT_IS_WINSOCKET |
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208 | # include <winsock.h> |
68 | #endif |
209 | #endif |
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210 | |
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211 | #if !EV_STAT_ENABLE |
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212 | # define EV_USE_INOTIFY 0 |
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213 | #endif |
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214 | |
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215 | #if EV_USE_INOTIFY |
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216 | # include <sys/inotify.h> |
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217 | #endif |
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218 | |
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219 | /**/ |
69 | |
220 | |
70 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
221 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
71 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
222 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
72 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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73 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
223 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
74 | |
224 | |
75 | #include "ev.h" |
225 | #if __GNUC__ >= 3 |
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226 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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227 | # define inline_size static inline /* inline for codesize */ |
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228 | # if EV_MINIMAL |
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229 | # define noinline __attribute__ ((noinline)) |
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230 | # define inline_speed static noinline |
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231 | # else |
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232 | # define noinline |
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233 | # define inline_speed static inline |
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234 | # endif |
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235 | #else |
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236 | # define expect(expr,value) (expr) |
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237 | # define inline_speed static |
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238 | # define inline_size static |
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239 | # define noinline |
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240 | #endif |
76 | |
241 | |
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242 | #define expect_false(expr) expect ((expr) != 0, 0) |
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243 | #define expect_true(expr) expect ((expr) != 0, 1) |
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244 | |
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245 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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246 | #define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
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247 | |
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248 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
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249 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
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250 | |
77 | typedef struct ev_watcher *W; |
251 | typedef ev_watcher *W; |
78 | typedef struct ev_watcher_list *WL; |
252 | typedef ev_watcher_list *WL; |
79 | typedef struct ev_watcher_time *WT; |
253 | typedef ev_watcher_time *WT; |
80 | |
254 | |
81 | static ev_tstamp now, diff; /* monotonic clock */ |
255 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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256 | |
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257 | #ifdef _WIN32 |
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258 | # include "ev_win32.c" |
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259 | #endif |
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260 | |
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261 | /*****************************************************************************/ |
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262 | |
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263 | static void (*syserr_cb)(const char *msg); |
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264 | |
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265 | void |
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266 | ev_set_syserr_cb (void (*cb)(const char *msg)) |
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267 | { |
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268 | syserr_cb = cb; |
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269 | } |
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270 | |
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271 | static void noinline |
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272 | syserr (const char *msg) |
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273 | { |
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274 | if (!msg) |
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275 | msg = "(libev) system error"; |
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276 | |
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277 | if (syserr_cb) |
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278 | syserr_cb (msg); |
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279 | else |
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280 | { |
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281 | perror (msg); |
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282 | abort (); |
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283 | } |
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284 | } |
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285 | |
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286 | static void *(*alloc)(void *ptr, long size); |
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287 | |
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288 | void |
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289 | ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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290 | { |
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291 | alloc = cb; |
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292 | } |
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293 | |
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294 | inline_speed void * |
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295 | ev_realloc (void *ptr, long size) |
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296 | { |
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297 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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298 | |
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299 | if (!ptr && size) |
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300 | { |
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301 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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302 | abort (); |
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303 | } |
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304 | |
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305 | return ptr; |
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306 | } |
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307 | |
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308 | #define ev_malloc(size) ev_realloc (0, (size)) |
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309 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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310 | |
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311 | /*****************************************************************************/ |
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312 | |
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313 | typedef struct |
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314 | { |
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315 | WL head; |
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316 | unsigned char events; |
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317 | unsigned char reify; |
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318 | #if EV_SELECT_IS_WINSOCKET |
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319 | SOCKET handle; |
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320 | #endif |
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321 | } ANFD; |
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322 | |
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323 | typedef struct |
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324 | { |
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325 | W w; |
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326 | int events; |
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327 | } ANPENDING; |
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328 | |
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329 | #if EV_USE_INOTIFY |
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330 | typedef struct |
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331 | { |
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332 | WL head; |
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333 | } ANFS; |
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334 | #endif |
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335 | |
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336 | #if EV_MULTIPLICITY |
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337 | |
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338 | struct ev_loop |
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339 | { |
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340 | ev_tstamp ev_rt_now; |
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341 | #define ev_rt_now ((loop)->ev_rt_now) |
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342 | #define VAR(name,decl) decl; |
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343 | #include "ev_vars.h" |
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344 | #undef VAR |
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345 | }; |
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346 | #include "ev_wrap.h" |
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347 | |
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348 | static struct ev_loop default_loop_struct; |
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349 | struct ev_loop *ev_default_loop_ptr; |
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350 | |
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351 | #else |
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352 | |
82 | ev_tstamp ev_now; |
353 | ev_tstamp ev_rt_now; |
83 | int ev_method; |
354 | #define VAR(name,decl) static decl; |
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355 | #include "ev_vars.h" |
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356 | #undef VAR |
84 | |
357 | |
85 | static int have_monotonic; /* runtime */ |
358 | static int ev_default_loop_ptr; |
86 | |
359 | |
87 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
360 | #endif |
88 | static void (*method_modify)(int fd, int oev, int nev); |
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89 | static void (*method_poll)(ev_tstamp timeout); |
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90 | |
361 | |
91 | /*****************************************************************************/ |
362 | /*****************************************************************************/ |
92 | |
363 | |
93 | ev_tstamp |
364 | ev_tstamp |
94 | ev_time (void) |
365 | ev_time (void) |
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102 | gettimeofday (&tv, 0); |
373 | gettimeofday (&tv, 0); |
103 | return tv.tv_sec + tv.tv_usec * 1e-6; |
374 | return tv.tv_sec + tv.tv_usec * 1e-6; |
104 | #endif |
375 | #endif |
105 | } |
376 | } |
106 | |
377 | |
107 | static ev_tstamp |
378 | ev_tstamp inline_size |
108 | get_clock (void) |
379 | get_clock (void) |
109 | { |
380 | { |
110 | #if EV_USE_MONOTONIC |
381 | #if EV_USE_MONOTONIC |
111 | if (have_monotonic) |
382 | if (expect_true (have_monotonic)) |
112 | { |
383 | { |
113 | struct timespec ts; |
384 | struct timespec ts; |
114 | clock_gettime (CLOCK_MONOTONIC, &ts); |
385 | clock_gettime (CLOCK_MONOTONIC, &ts); |
115 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
386 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
116 | } |
387 | } |
117 | #endif |
388 | #endif |
118 | |
389 | |
119 | return ev_time (); |
390 | return ev_time (); |
120 | } |
391 | } |
121 | |
392 | |
122 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
393 | #if EV_MULTIPLICITY |
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394 | ev_tstamp |
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395 | ev_now (EV_P) |
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396 | { |
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397 | return ev_rt_now; |
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398 | } |
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399 | #endif |
123 | |
400 | |
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401 | int inline_size |
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402 | array_nextsize (int elem, int cur, int cnt) |
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403 | { |
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404 | int ncur = cur + 1; |
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405 | |
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406 | do |
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407 | ncur <<= 1; |
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408 | while (cnt > ncur); |
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409 | |
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410 | /* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */ |
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411 | if (elem * ncur > 4096) |
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412 | { |
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413 | ncur *= elem; |
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414 | ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095; |
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415 | ncur = ncur - sizeof (void *) * 4; |
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416 | ncur /= elem; |
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417 | } |
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418 | |
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419 | return ncur; |
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420 | } |
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421 | |
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422 | inline_speed void * |
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423 | array_realloc (int elem, void *base, int *cur, int cnt) |
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424 | { |
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425 | *cur = array_nextsize (elem, *cur, cnt); |
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426 | return ev_realloc (base, elem * *cur); |
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427 | } |
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428 | |
124 | #define array_needsize(base,cur,cnt,init) \ |
429 | #define array_needsize(type,base,cur,cnt,init) \ |
125 | if ((cnt) > cur) \ |
430 | if (expect_false ((cnt) > (cur))) \ |
126 | { \ |
431 | { \ |
127 | int newcnt = cur; \ |
432 | int ocur_ = (cur); \ |
128 | do \ |
433 | (base) = (type *)array_realloc \ |
129 | { \ |
434 | (sizeof (type), (base), &(cur), (cnt)); \ |
130 | newcnt = array_roundsize (base, newcnt << 1); \ |
435 | init ((base) + (ocur_), (cur) - ocur_); \ |
131 | } \ |
436 | } |
132 | while ((cnt) > newcnt); \ |
437 | |
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438 | #if 0 |
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439 | #define array_slim(type,stem) \ |
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440 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
133 | \ |
441 | { \ |
134 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
442 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
135 | init (base + cur, newcnt - cur); \ |
443 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
136 | cur = newcnt; \ |
444 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
137 | } |
445 | } |
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446 | #endif |
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447 | |
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448 | #define array_free(stem, idx) \ |
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449 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
138 | |
450 | |
139 | /*****************************************************************************/ |
451 | /*****************************************************************************/ |
140 | |
452 | |
141 | typedef struct |
453 | void noinline |
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454 | ev_feed_event (EV_P_ void *w, int revents) |
142 | { |
455 | { |
143 | struct ev_io *head; |
456 | W w_ = (W)w; |
144 | int events; |
|
|
145 | } ANFD; |
|
|
146 | |
457 | |
147 | static ANFD *anfds; |
458 | if (expect_false (w_->pending)) |
148 | static int anfdmax; |
459 | { |
|
|
460 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
|
|
461 | return; |
|
|
462 | } |
149 | |
463 | |
150 | static void |
464 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
465 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
466 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
467 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
468 | } |
|
|
469 | |
|
|
470 | void inline_size |
|
|
471 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
472 | { |
|
|
473 | int i; |
|
|
474 | |
|
|
475 | for (i = 0; i < eventcnt; ++i) |
|
|
476 | ev_feed_event (EV_A_ events [i], type); |
|
|
477 | } |
|
|
478 | |
|
|
479 | /*****************************************************************************/ |
|
|
480 | |
|
|
481 | void inline_size |
151 | anfds_init (ANFD *base, int count) |
482 | anfds_init (ANFD *base, int count) |
152 | { |
483 | { |
153 | while (count--) |
484 | while (count--) |
154 | { |
485 | { |
155 | base->head = 0; |
486 | base->head = 0; |
156 | base->events = EV_NONE; |
487 | base->events = EV_NONE; |
|
|
488 | base->reify = 0; |
|
|
489 | |
157 | ++base; |
490 | ++base; |
158 | } |
491 | } |
159 | } |
492 | } |
160 | |
493 | |
161 | typedef struct |
494 | void inline_speed |
162 | { |
|
|
163 | W w; |
|
|
164 | int events; |
|
|
165 | } ANPENDING; |
|
|
166 | |
|
|
167 | static ANPENDING *pendings; |
|
|
168 | static int pendingmax, pendingcnt; |
|
|
169 | |
|
|
170 | static void |
|
|
171 | event (W w, int events) |
|
|
172 | { |
|
|
173 | if (w->pending) |
|
|
174 | { |
|
|
175 | pendings [w->pending - 1].events |= events; |
|
|
176 | return; |
|
|
177 | } |
|
|
178 | |
|
|
179 | w->pending = ++pendingcnt; |
|
|
180 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
181 | pendings [pendingcnt - 1].w = w; |
|
|
182 | pendings [pendingcnt - 1].events = events; |
|
|
183 | } |
|
|
184 | |
|
|
185 | static void |
|
|
186 | queue_events (W *events, int eventcnt, int type) |
|
|
187 | { |
|
|
188 | int i; |
|
|
189 | |
|
|
190 | for (i = 0; i < eventcnt; ++i) |
|
|
191 | event (events [i], type); |
|
|
192 | } |
|
|
193 | |
|
|
194 | static void |
|
|
195 | fd_event (int fd, int events) |
495 | fd_event (EV_P_ int fd, int revents) |
196 | { |
496 | { |
197 | ANFD *anfd = anfds + fd; |
497 | ANFD *anfd = anfds + fd; |
198 | struct ev_io *w; |
498 | ev_io *w; |
199 | |
499 | |
200 | for (w = anfd->head; w; w = w->next) |
500 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
201 | { |
501 | { |
202 | int ev = w->events & events; |
502 | int ev = w->events & revents; |
203 | |
503 | |
204 | if (ev) |
504 | if (ev) |
205 | event ((W)w, ev); |
505 | ev_feed_event (EV_A_ (W)w, ev); |
206 | } |
506 | } |
207 | } |
507 | } |
208 | |
508 | |
209 | /*****************************************************************************/ |
509 | void |
|
|
510 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
511 | { |
|
|
512 | if (fd >= 0 && fd < anfdmax) |
|
|
513 | fd_event (EV_A_ fd, revents); |
|
|
514 | } |
210 | |
515 | |
211 | static int *fdchanges; |
516 | void inline_size |
212 | static int fdchangemax, fdchangecnt; |
517 | fd_reify (EV_P) |
213 | |
|
|
214 | static void |
|
|
215 | fd_reify (void) |
|
|
216 | { |
518 | { |
217 | int i; |
519 | int i; |
218 | |
520 | |
219 | for (i = 0; i < fdchangecnt; ++i) |
521 | for (i = 0; i < fdchangecnt; ++i) |
220 | { |
522 | { |
221 | int fd = fdchanges [i]; |
523 | int fd = fdchanges [i]; |
222 | ANFD *anfd = anfds + fd; |
524 | ANFD *anfd = anfds + fd; |
223 | struct ev_io *w; |
525 | ev_io *w; |
224 | |
526 | |
225 | int events = 0; |
527 | int events = 0; |
226 | |
528 | |
227 | for (w = anfd->head; w; w = w->next) |
529 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
228 | events |= w->events; |
530 | events |= w->events; |
229 | |
531 | |
230 | anfd->events &= ~EV_REIFY; |
532 | #if EV_SELECT_IS_WINSOCKET |
231 | |
533 | if (events) |
232 | if (anfd->events != events) |
|
|
233 | { |
534 | { |
234 | method_modify (fd, anfd->events, events); |
535 | unsigned long argp; |
235 | anfd->events = events; |
536 | anfd->handle = _get_osfhandle (fd); |
|
|
537 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
236 | } |
538 | } |
|
|
539 | #endif |
|
|
540 | |
|
|
541 | anfd->reify = 0; |
|
|
542 | |
|
|
543 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
544 | anfd->events = events; |
237 | } |
545 | } |
238 | |
546 | |
239 | fdchangecnt = 0; |
547 | fdchangecnt = 0; |
240 | } |
548 | } |
241 | |
549 | |
242 | static void |
550 | void inline_size |
243 | fd_change (int fd) |
551 | fd_change (EV_P_ int fd) |
244 | { |
552 | { |
245 | if (anfds [fd].events & EV_REIFY || fdchangecnt < 0) |
553 | if (expect_false (anfds [fd].reify)) |
246 | return; |
554 | return; |
247 | |
555 | |
248 | anfds [fd].events |= EV_REIFY; |
556 | anfds [fd].reify = 1; |
249 | |
557 | |
250 | ++fdchangecnt; |
558 | ++fdchangecnt; |
251 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
559 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
252 | fdchanges [fdchangecnt - 1] = fd; |
560 | fdchanges [fdchangecnt - 1] = fd; |
253 | } |
561 | } |
254 | |
562 | |
|
|
563 | void inline_speed |
|
|
564 | fd_kill (EV_P_ int fd) |
|
|
565 | { |
|
|
566 | ev_io *w; |
|
|
567 | |
|
|
568 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
569 | { |
|
|
570 | ev_io_stop (EV_A_ w); |
|
|
571 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
572 | } |
|
|
573 | } |
|
|
574 | |
|
|
575 | int inline_size |
|
|
576 | fd_valid (int fd) |
|
|
577 | { |
|
|
578 | #ifdef _WIN32 |
|
|
579 | return _get_osfhandle (fd) != -1; |
|
|
580 | #else |
|
|
581 | return fcntl (fd, F_GETFD) != -1; |
|
|
582 | #endif |
|
|
583 | } |
|
|
584 | |
255 | /* called on EBADF to verify fds */ |
585 | /* called on EBADF to verify fds */ |
256 | static void |
586 | static void noinline |
257 | fd_recheck (void) |
587 | fd_ebadf (EV_P) |
258 | { |
588 | { |
259 | int fd; |
589 | int fd; |
260 | |
590 | |
261 | for (fd = 0; fd < anfdmax; ++fd) |
591 | for (fd = 0; fd < anfdmax; ++fd) |
262 | if (anfds [fd].events) |
592 | if (anfds [fd].events) |
263 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
593 | if (!fd_valid (fd) == -1 && errno == EBADF) |
264 | while (anfds [fd].head) |
594 | fd_kill (EV_A_ fd); |
|
|
595 | } |
|
|
596 | |
|
|
597 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
598 | static void noinline |
|
|
599 | fd_enomem (EV_P) |
|
|
600 | { |
|
|
601 | int fd; |
|
|
602 | |
|
|
603 | for (fd = anfdmax; fd--; ) |
|
|
604 | if (anfds [fd].events) |
265 | { |
605 | { |
266 | ev_io_stop (anfds [fd].head); |
606 | fd_kill (EV_A_ fd); |
267 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT); |
607 | return; |
268 | } |
608 | } |
|
|
609 | } |
|
|
610 | |
|
|
611 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
612 | static void noinline |
|
|
613 | fd_rearm_all (EV_P) |
|
|
614 | { |
|
|
615 | int fd; |
|
|
616 | |
|
|
617 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
618 | if (anfds [fd].events) |
|
|
619 | { |
|
|
620 | anfds [fd].events = 0; |
|
|
621 | fd_change (EV_A_ fd); |
|
|
622 | } |
269 | } |
623 | } |
270 | |
624 | |
271 | /*****************************************************************************/ |
625 | /*****************************************************************************/ |
272 | |
626 | |
273 | static struct ev_timer **timers; |
627 | void inline_speed |
274 | static int timermax, timercnt; |
|
|
275 | |
|
|
276 | static struct ev_periodic **periodics; |
|
|
277 | static int periodicmax, periodiccnt; |
|
|
278 | |
|
|
279 | static void |
|
|
280 | upheap (WT *timers, int k) |
628 | upheap (WT *heap, int k) |
281 | { |
629 | { |
282 | WT w = timers [k]; |
630 | WT w = heap [k]; |
283 | |
631 | |
284 | while (k && timers [k >> 1]->at > w->at) |
632 | while (k && heap [k >> 1]->at > w->at) |
285 | { |
633 | { |
286 | timers [k] = timers [k >> 1]; |
634 | heap [k] = heap [k >> 1]; |
287 | timers [k]->active = k + 1; |
635 | ((W)heap [k])->active = k + 1; |
288 | k >>= 1; |
636 | k >>= 1; |
289 | } |
637 | } |
290 | |
638 | |
291 | timers [k] = w; |
639 | heap [k] = w; |
292 | timers [k]->active = k + 1; |
640 | ((W)heap [k])->active = k + 1; |
293 | |
641 | |
294 | } |
642 | } |
295 | |
643 | |
296 | static void |
644 | void inline_speed |
297 | downheap (WT *timers, int N, int k) |
645 | downheap (WT *heap, int N, int k) |
298 | { |
646 | { |
299 | WT w = timers [k]; |
647 | WT w = heap [k]; |
300 | |
648 | |
301 | while (k < (N >> 1)) |
649 | while (k < (N >> 1)) |
302 | { |
650 | { |
303 | int j = k << 1; |
651 | int j = k << 1; |
304 | |
652 | |
305 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
653 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
306 | ++j; |
654 | ++j; |
307 | |
655 | |
308 | if (w->at <= timers [j]->at) |
656 | if (w->at <= heap [j]->at) |
309 | break; |
657 | break; |
310 | |
658 | |
311 | timers [k] = timers [j]; |
659 | heap [k] = heap [j]; |
312 | timers [k]->active = k + 1; |
660 | ((W)heap [k])->active = k + 1; |
313 | k = j; |
661 | k = j; |
314 | } |
662 | } |
315 | |
663 | |
316 | timers [k] = w; |
664 | heap [k] = w; |
317 | timers [k]->active = k + 1; |
665 | ((W)heap [k])->active = k + 1; |
|
|
666 | } |
|
|
667 | |
|
|
668 | void inline_size |
|
|
669 | adjustheap (WT *heap, int N, int k) |
|
|
670 | { |
|
|
671 | upheap (heap, k); |
|
|
672 | downheap (heap, N, k); |
318 | } |
673 | } |
319 | |
674 | |
320 | /*****************************************************************************/ |
675 | /*****************************************************************************/ |
321 | |
676 | |
322 | typedef struct |
677 | typedef struct |
323 | { |
678 | { |
324 | struct ev_signal *head; |
679 | WL head; |
325 | sig_atomic_t gotsig; |
680 | sig_atomic_t volatile gotsig; |
326 | } ANSIG; |
681 | } ANSIG; |
327 | |
682 | |
328 | static ANSIG *signals; |
683 | static ANSIG *signals; |
329 | static int signalmax; |
684 | static int signalmax; |
330 | |
685 | |
331 | static int sigpipe [2]; |
686 | static int sigpipe [2]; |
332 | static sig_atomic_t gotsig; |
687 | static sig_atomic_t volatile gotsig; |
333 | static struct ev_io sigev; |
688 | static ev_io sigev; |
334 | |
689 | |
335 | static void |
690 | void inline_size |
336 | signals_init (ANSIG *base, int count) |
691 | signals_init (ANSIG *base, int count) |
337 | { |
692 | { |
338 | while (count--) |
693 | while (count--) |
339 | { |
694 | { |
340 | base->head = 0; |
695 | base->head = 0; |
341 | base->gotsig = 0; |
696 | base->gotsig = 0; |
|
|
697 | |
342 | ++base; |
698 | ++base; |
343 | } |
699 | } |
344 | } |
700 | } |
345 | |
701 | |
346 | static void |
702 | static void |
347 | sighandler (int signum) |
703 | sighandler (int signum) |
348 | { |
704 | { |
|
|
705 | #if _WIN32 |
|
|
706 | signal (signum, sighandler); |
|
|
707 | #endif |
|
|
708 | |
349 | signals [signum - 1].gotsig = 1; |
709 | signals [signum - 1].gotsig = 1; |
350 | |
710 | |
351 | if (!gotsig) |
711 | if (!gotsig) |
352 | { |
712 | { |
|
|
713 | int old_errno = errno; |
353 | gotsig = 1; |
714 | gotsig = 1; |
354 | write (sigpipe [1], &gotsig, 1); |
715 | write (sigpipe [1], &signum, 1); |
|
|
716 | errno = old_errno; |
355 | } |
717 | } |
|
|
718 | } |
|
|
719 | |
|
|
720 | void noinline |
|
|
721 | ev_feed_signal_event (EV_P_ int signum) |
|
|
722 | { |
|
|
723 | WL w; |
|
|
724 | |
|
|
725 | #if EV_MULTIPLICITY |
|
|
726 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
727 | #endif |
|
|
728 | |
|
|
729 | --signum; |
|
|
730 | |
|
|
731 | if (signum < 0 || signum >= signalmax) |
|
|
732 | return; |
|
|
733 | |
|
|
734 | signals [signum].gotsig = 0; |
|
|
735 | |
|
|
736 | for (w = signals [signum].head; w; w = w->next) |
|
|
737 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
356 | } |
738 | } |
357 | |
739 | |
358 | static void |
740 | static void |
359 | sigcb (struct ev_io *iow, int revents) |
741 | sigcb (EV_P_ ev_io *iow, int revents) |
360 | { |
742 | { |
361 | struct ev_signal *w; |
|
|
362 | int sig; |
743 | int signum; |
363 | |
744 | |
|
|
745 | read (sigpipe [0], &revents, 1); |
364 | gotsig = 0; |
746 | gotsig = 0; |
365 | read (sigpipe [0], &revents, 1); |
|
|
366 | |
747 | |
367 | for (sig = signalmax; sig--; ) |
748 | for (signum = signalmax; signum--; ) |
368 | if (signals [sig].gotsig) |
749 | if (signals [signum].gotsig) |
|
|
750 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
751 | } |
|
|
752 | |
|
|
753 | void inline_size |
|
|
754 | fd_intern (int fd) |
|
|
755 | { |
|
|
756 | #ifdef _WIN32 |
|
|
757 | int arg = 1; |
|
|
758 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
759 | #else |
|
|
760 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
761 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
762 | #endif |
|
|
763 | } |
|
|
764 | |
|
|
765 | static void noinline |
|
|
766 | siginit (EV_P) |
|
|
767 | { |
|
|
768 | fd_intern (sigpipe [0]); |
|
|
769 | fd_intern (sigpipe [1]); |
|
|
770 | |
|
|
771 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
772 | ev_io_start (EV_A_ &sigev); |
|
|
773 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
774 | } |
|
|
775 | |
|
|
776 | /*****************************************************************************/ |
|
|
777 | |
|
|
778 | static ev_child *childs [EV_PID_HASHSIZE]; |
|
|
779 | |
|
|
780 | #ifndef _WIN32 |
|
|
781 | |
|
|
782 | static ev_signal childev; |
|
|
783 | |
|
|
784 | void inline_speed |
|
|
785 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
786 | { |
|
|
787 | ev_child *w; |
|
|
788 | |
|
|
789 | for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
790 | if (w->pid == pid || !w->pid) |
369 | { |
791 | { |
370 | signals [sig].gotsig = 0; |
792 | ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */ |
371 | |
793 | w->rpid = pid; |
372 | for (w = signals [sig].head; w; w = w->next) |
794 | w->rstatus = status; |
373 | event ((W)w, EV_SIGNAL); |
795 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
374 | } |
796 | } |
375 | } |
797 | } |
376 | |
|
|
377 | static void |
|
|
378 | siginit (void) |
|
|
379 | { |
|
|
380 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
|
|
381 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
382 | |
|
|
383 | /* rather than sort out wether we really need nb, set it */ |
|
|
384 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
|
|
385 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
|
|
386 | |
|
|
387 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
388 | ev_io_start (&sigev); |
|
|
389 | } |
|
|
390 | |
|
|
391 | /*****************************************************************************/ |
|
|
392 | |
|
|
393 | static struct ev_idle **idles; |
|
|
394 | static int idlemax, idlecnt; |
|
|
395 | |
|
|
396 | static struct ev_prepare **prepares; |
|
|
397 | static int preparemax, preparecnt; |
|
|
398 | |
|
|
399 | static struct ev_check **checks; |
|
|
400 | static int checkmax, checkcnt; |
|
|
401 | |
|
|
402 | /*****************************************************************************/ |
|
|
403 | |
|
|
404 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
405 | static struct ev_signal childev; |
|
|
406 | |
798 | |
407 | #ifndef WCONTINUED |
799 | #ifndef WCONTINUED |
408 | # define WCONTINUED 0 |
800 | # define WCONTINUED 0 |
409 | #endif |
801 | #endif |
410 | |
802 | |
411 | static void |
803 | static void |
412 | childcb (struct ev_signal *sw, int revents) |
804 | childcb (EV_P_ ev_signal *sw, int revents) |
413 | { |
805 | { |
414 | struct ev_child *w; |
|
|
415 | int pid, status; |
806 | int pid, status; |
416 | |
807 | |
|
|
808 | /* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
417 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
809 | if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
418 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
810 | if (!WCONTINUED |
419 | if (w->pid == pid || w->pid == -1) |
811 | || errno != EINVAL |
420 | { |
812 | || 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
421 | w->status = status; |
813 | return; |
422 | event ((W)w, EV_CHILD); |
814 | |
423 | } |
815 | /* make sure we are called again until all childs have been reaped */ |
|
|
816 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
817 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
|
|
818 | |
|
|
819 | child_reap (EV_A_ sw, pid, pid, status); |
|
|
820 | if (EV_PID_HASHSIZE > 1) |
|
|
821 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
424 | } |
822 | } |
|
|
823 | |
|
|
824 | #endif |
425 | |
825 | |
426 | /*****************************************************************************/ |
826 | /*****************************************************************************/ |
427 | |
827 | |
|
|
828 | #if EV_USE_PORT |
|
|
829 | # include "ev_port.c" |
|
|
830 | #endif |
|
|
831 | #if EV_USE_KQUEUE |
|
|
832 | # include "ev_kqueue.c" |
|
|
833 | #endif |
428 | #if EV_USE_EPOLL |
834 | #if EV_USE_EPOLL |
429 | # include "ev_epoll.c" |
835 | # include "ev_epoll.c" |
430 | #endif |
836 | #endif |
|
|
837 | #if EV_USE_POLL |
|
|
838 | # include "ev_poll.c" |
|
|
839 | #endif |
431 | #if EV_USE_SELECT |
840 | #if EV_USE_SELECT |
432 | # include "ev_select.c" |
841 | # include "ev_select.c" |
433 | #endif |
842 | #endif |
434 | |
843 | |
435 | int |
844 | int |
… | |
… | |
442 | ev_version_minor (void) |
851 | ev_version_minor (void) |
443 | { |
852 | { |
444 | return EV_VERSION_MINOR; |
853 | return EV_VERSION_MINOR; |
445 | } |
854 | } |
446 | |
855 | |
447 | int ev_init (int flags) |
856 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
857 | int inline_size |
|
|
858 | enable_secure (void) |
448 | { |
859 | { |
449 | if (!ev_method) |
860 | #ifdef _WIN32 |
|
|
861 | return 0; |
|
|
862 | #else |
|
|
863 | return getuid () != geteuid () |
|
|
864 | || getgid () != getegid (); |
|
|
865 | #endif |
|
|
866 | } |
|
|
867 | |
|
|
868 | unsigned int |
|
|
869 | ev_supported_backends (void) |
|
|
870 | { |
|
|
871 | unsigned int flags = 0; |
|
|
872 | |
|
|
873 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
874 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
875 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
876 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
877 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
878 | |
|
|
879 | return flags; |
|
|
880 | } |
|
|
881 | |
|
|
882 | unsigned int |
|
|
883 | ev_recommended_backends (void) |
|
|
884 | { |
|
|
885 | unsigned int flags = ev_supported_backends (); |
|
|
886 | |
|
|
887 | #ifndef __NetBSD__ |
|
|
888 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
889 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
890 | flags &= ~EVBACKEND_KQUEUE; |
|
|
891 | #endif |
|
|
892 | #ifdef __APPLE__ |
|
|
893 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
894 | flags &= ~EVBACKEND_POLL; |
|
|
895 | #endif |
|
|
896 | |
|
|
897 | return flags; |
|
|
898 | } |
|
|
899 | |
|
|
900 | unsigned int |
|
|
901 | ev_embeddable_backends (void) |
|
|
902 | { |
|
|
903 | return EVBACKEND_EPOLL |
|
|
904 | | EVBACKEND_KQUEUE |
|
|
905 | | EVBACKEND_PORT; |
|
|
906 | } |
|
|
907 | |
|
|
908 | unsigned int |
|
|
909 | ev_backend (EV_P) |
|
|
910 | { |
|
|
911 | return backend; |
|
|
912 | } |
|
|
913 | |
|
|
914 | unsigned int |
|
|
915 | ev_loop_count (EV_P) |
|
|
916 | { |
|
|
917 | return loop_count; |
|
|
918 | } |
|
|
919 | |
|
|
920 | static void noinline |
|
|
921 | loop_init (EV_P_ unsigned int flags) |
|
|
922 | { |
|
|
923 | if (!backend) |
450 | { |
924 | { |
451 | #if EV_USE_MONOTONIC |
925 | #if EV_USE_MONOTONIC |
452 | { |
926 | { |
453 | struct timespec ts; |
927 | struct timespec ts; |
454 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
928 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
455 | have_monotonic = 1; |
929 | have_monotonic = 1; |
456 | } |
930 | } |
457 | #endif |
931 | #endif |
458 | |
932 | |
459 | ev_now = ev_time (); |
933 | ev_rt_now = ev_time (); |
460 | now = get_clock (); |
934 | mn_now = get_clock (); |
|
|
935 | now_floor = mn_now; |
461 | diff = ev_now - now; |
936 | rtmn_diff = ev_rt_now - mn_now; |
462 | |
937 | |
463 | if (pipe (sigpipe)) |
938 | /* pid check not overridable via env */ |
464 | return 0; |
939 | #ifndef _WIN32 |
|
|
940 | if (flags & EVFLAG_FORKCHECK) |
|
|
941 | curpid = getpid (); |
|
|
942 | #endif |
465 | |
943 | |
466 | ev_method = EVMETHOD_NONE; |
944 | if (!(flags & EVFLAG_NOENV) |
|
|
945 | && !enable_secure () |
|
|
946 | && getenv ("LIBEV_FLAGS")) |
|
|
947 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
948 | |
|
|
949 | if (!(flags & 0x0000ffffUL)) |
|
|
950 | flags |= ev_recommended_backends (); |
|
|
951 | |
|
|
952 | backend = 0; |
|
|
953 | backend_fd = -1; |
|
|
954 | #if EV_USE_INOTIFY |
|
|
955 | fs_fd = -2; |
|
|
956 | #endif |
|
|
957 | |
|
|
958 | #if EV_USE_PORT |
|
|
959 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
960 | #endif |
|
|
961 | #if EV_USE_KQUEUE |
|
|
962 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
963 | #endif |
467 | #if EV_USE_EPOLL |
964 | #if EV_USE_EPOLL |
468 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
965 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
966 | #endif |
|
|
967 | #if EV_USE_POLL |
|
|
968 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
469 | #endif |
969 | #endif |
470 | #if EV_USE_SELECT |
970 | #if EV_USE_SELECT |
471 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
971 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
472 | #endif |
972 | #endif |
473 | |
973 | |
474 | if (ev_method) |
974 | ev_init (&sigev, sigcb); |
|
|
975 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
976 | } |
|
|
977 | } |
|
|
978 | |
|
|
979 | static void noinline |
|
|
980 | loop_destroy (EV_P) |
|
|
981 | { |
|
|
982 | int i; |
|
|
983 | |
|
|
984 | #if EV_USE_INOTIFY |
|
|
985 | if (fs_fd >= 0) |
|
|
986 | close (fs_fd); |
|
|
987 | #endif |
|
|
988 | |
|
|
989 | if (backend_fd >= 0) |
|
|
990 | close (backend_fd); |
|
|
991 | |
|
|
992 | #if EV_USE_PORT |
|
|
993 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
994 | #endif |
|
|
995 | #if EV_USE_KQUEUE |
|
|
996 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
997 | #endif |
|
|
998 | #if EV_USE_EPOLL |
|
|
999 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
1000 | #endif |
|
|
1001 | #if EV_USE_POLL |
|
|
1002 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
1003 | #endif |
|
|
1004 | #if EV_USE_SELECT |
|
|
1005 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
1006 | #endif |
|
|
1007 | |
|
|
1008 | for (i = NUMPRI; i--; ) |
|
|
1009 | { |
|
|
1010 | array_free (pending, [i]); |
|
|
1011 | #if EV_IDLE_ENABLE |
|
|
1012 | array_free (idle, [i]); |
|
|
1013 | #endif |
|
|
1014 | } |
|
|
1015 | |
|
|
1016 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
1017 | array_free (fdchange, EMPTY); |
|
|
1018 | array_free (timer, EMPTY); |
|
|
1019 | #if EV_PERIODIC_ENABLE |
|
|
1020 | array_free (periodic, EMPTY); |
|
|
1021 | #endif |
|
|
1022 | array_free (prepare, EMPTY); |
|
|
1023 | array_free (check, EMPTY); |
|
|
1024 | |
|
|
1025 | backend = 0; |
|
|
1026 | } |
|
|
1027 | |
|
|
1028 | void inline_size infy_fork (EV_P); |
|
|
1029 | |
|
|
1030 | void inline_size |
|
|
1031 | loop_fork (EV_P) |
|
|
1032 | { |
|
|
1033 | #if EV_USE_PORT |
|
|
1034 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
1035 | #endif |
|
|
1036 | #if EV_USE_KQUEUE |
|
|
1037 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
1038 | #endif |
|
|
1039 | #if EV_USE_EPOLL |
|
|
1040 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
1041 | #endif |
|
|
1042 | #if EV_USE_INOTIFY |
|
|
1043 | infy_fork (EV_A); |
|
|
1044 | #endif |
|
|
1045 | |
|
|
1046 | if (ev_is_active (&sigev)) |
|
|
1047 | { |
|
|
1048 | /* default loop */ |
|
|
1049 | |
|
|
1050 | ev_ref (EV_A); |
|
|
1051 | ev_io_stop (EV_A_ &sigev); |
|
|
1052 | close (sigpipe [0]); |
|
|
1053 | close (sigpipe [1]); |
|
|
1054 | |
|
|
1055 | while (pipe (sigpipe)) |
|
|
1056 | syserr ("(libev) error creating pipe"); |
|
|
1057 | |
|
|
1058 | siginit (EV_A); |
|
|
1059 | } |
|
|
1060 | |
|
|
1061 | postfork = 0; |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | #if EV_MULTIPLICITY |
|
|
1065 | struct ev_loop * |
|
|
1066 | ev_loop_new (unsigned int flags) |
|
|
1067 | { |
|
|
1068 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
1069 | |
|
|
1070 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
1071 | |
|
|
1072 | loop_init (EV_A_ flags); |
|
|
1073 | |
|
|
1074 | if (ev_backend (EV_A)) |
|
|
1075 | return loop; |
|
|
1076 | |
|
|
1077 | return 0; |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | void |
|
|
1081 | ev_loop_destroy (EV_P) |
|
|
1082 | { |
|
|
1083 | loop_destroy (EV_A); |
|
|
1084 | ev_free (loop); |
|
|
1085 | } |
|
|
1086 | |
|
|
1087 | void |
|
|
1088 | ev_loop_fork (EV_P) |
|
|
1089 | { |
|
|
1090 | postfork = 1; |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | #endif |
|
|
1094 | |
|
|
1095 | #if EV_MULTIPLICITY |
|
|
1096 | struct ev_loop * |
|
|
1097 | ev_default_loop_init (unsigned int flags) |
|
|
1098 | #else |
|
|
1099 | int |
|
|
1100 | ev_default_loop (unsigned int flags) |
|
|
1101 | #endif |
|
|
1102 | { |
|
|
1103 | if (sigpipe [0] == sigpipe [1]) |
|
|
1104 | if (pipe (sigpipe)) |
|
|
1105 | return 0; |
|
|
1106 | |
|
|
1107 | if (!ev_default_loop_ptr) |
|
|
1108 | { |
|
|
1109 | #if EV_MULTIPLICITY |
|
|
1110 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1111 | #else |
|
|
1112 | ev_default_loop_ptr = 1; |
|
|
1113 | #endif |
|
|
1114 | |
|
|
1115 | loop_init (EV_A_ flags); |
|
|
1116 | |
|
|
1117 | if (ev_backend (EV_A)) |
475 | { |
1118 | { |
476 | ev_watcher_init (&sigev, sigcb); |
|
|
477 | siginit (); |
1119 | siginit (EV_A); |
478 | |
1120 | |
|
|
1121 | #ifndef _WIN32 |
479 | ev_signal_init (&childev, childcb, SIGCHLD); |
1122 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1123 | ev_set_priority (&childev, EV_MAXPRI); |
480 | ev_signal_start (&childev); |
1124 | ev_signal_start (EV_A_ &childev); |
|
|
1125 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1126 | #endif |
481 | } |
1127 | } |
|
|
1128 | else |
|
|
1129 | ev_default_loop_ptr = 0; |
482 | } |
1130 | } |
483 | |
1131 | |
484 | return ev_method; |
1132 | return ev_default_loop_ptr; |
|
|
1133 | } |
|
|
1134 | |
|
|
1135 | void |
|
|
1136 | ev_default_destroy (void) |
|
|
1137 | { |
|
|
1138 | #if EV_MULTIPLICITY |
|
|
1139 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1140 | #endif |
|
|
1141 | |
|
|
1142 | #ifndef _WIN32 |
|
|
1143 | ev_ref (EV_A); /* child watcher */ |
|
|
1144 | ev_signal_stop (EV_A_ &childev); |
|
|
1145 | #endif |
|
|
1146 | |
|
|
1147 | ev_ref (EV_A); /* signal watcher */ |
|
|
1148 | ev_io_stop (EV_A_ &sigev); |
|
|
1149 | |
|
|
1150 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1151 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1152 | |
|
|
1153 | loop_destroy (EV_A); |
|
|
1154 | } |
|
|
1155 | |
|
|
1156 | void |
|
|
1157 | ev_default_fork (void) |
|
|
1158 | { |
|
|
1159 | #if EV_MULTIPLICITY |
|
|
1160 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1161 | #endif |
|
|
1162 | |
|
|
1163 | if (backend) |
|
|
1164 | postfork = 1; |
485 | } |
1165 | } |
486 | |
1166 | |
487 | /*****************************************************************************/ |
1167 | /*****************************************************************************/ |
488 | |
1168 | |
489 | void |
1169 | void |
490 | ev_prefork (void) |
1170 | ev_invoke (EV_P_ void *w, int revents) |
491 | { |
1171 | { |
492 | /* nop */ |
1172 | EV_CB_INVOKE ((W)w, revents); |
493 | } |
1173 | } |
494 | |
1174 | |
495 | void |
1175 | void inline_speed |
496 | ev_postfork_parent (void) |
|
|
497 | { |
|
|
498 | /* nop */ |
|
|
499 | } |
|
|
500 | |
|
|
501 | void |
|
|
502 | ev_postfork_child (void) |
|
|
503 | { |
|
|
504 | #if EV_USE_EPOLL |
|
|
505 | if (ev_method == EVMETHOD_EPOLL) |
|
|
506 | epoll_postfork_child (); |
|
|
507 | #endif |
|
|
508 | |
|
|
509 | ev_io_stop (&sigev); |
|
|
510 | close (sigpipe [0]); |
|
|
511 | close (sigpipe [1]); |
|
|
512 | pipe (sigpipe); |
|
|
513 | siginit (); |
|
|
514 | } |
|
|
515 | |
|
|
516 | /*****************************************************************************/ |
|
|
517 | |
|
|
518 | static void |
|
|
519 | call_pending (void) |
1176 | call_pending (EV_P) |
520 | { |
1177 | { |
|
|
1178 | int pri; |
|
|
1179 | |
|
|
1180 | for (pri = NUMPRI; pri--; ) |
521 | while (pendingcnt) |
1181 | while (pendingcnt [pri]) |
522 | { |
1182 | { |
523 | ANPENDING *p = pendings + --pendingcnt; |
1183 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
524 | |
1184 | |
525 | if (p->w) |
1185 | if (expect_true (p->w)) |
526 | { |
1186 | { |
|
|
1187 | /*assert (("non-pending watcher on pending list", p->w->pending));*/ |
|
|
1188 | |
527 | p->w->pending = 0; |
1189 | p->w->pending = 0; |
528 | p->w->cb (p->w, p->events); |
1190 | EV_CB_INVOKE (p->w, p->events); |
529 | } |
1191 | } |
530 | } |
1192 | } |
531 | } |
1193 | } |
532 | |
1194 | |
533 | static void |
1195 | void inline_size |
534 | timers_reify (void) |
1196 | timers_reify (EV_P) |
535 | { |
1197 | { |
536 | while (timercnt && timers [0]->at <= now) |
1198 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
537 | { |
1199 | { |
538 | struct ev_timer *w = timers [0]; |
1200 | ev_timer *w = timers [0]; |
|
|
1201 | |
|
|
1202 | /*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
539 | |
1203 | |
540 | /* first reschedule or stop timer */ |
1204 | /* first reschedule or stop timer */ |
541 | if (w->repeat) |
1205 | if (w->repeat) |
542 | { |
1206 | { |
|
|
1207 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1208 | |
543 | w->at = now + w->repeat; |
1209 | ((WT)w)->at += w->repeat; |
544 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1210 | if (((WT)w)->at < mn_now) |
|
|
1211 | ((WT)w)->at = mn_now; |
|
|
1212 | |
545 | downheap ((WT *)timers, timercnt, 0); |
1213 | downheap ((WT *)timers, timercnt, 0); |
546 | } |
1214 | } |
547 | else |
1215 | else |
548 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1216 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
549 | |
1217 | |
550 | event ((W)w, EV_TIMEOUT); |
1218 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
551 | } |
1219 | } |
552 | } |
1220 | } |
553 | |
1221 | |
554 | static void |
1222 | #if EV_PERIODIC_ENABLE |
|
|
1223 | void inline_size |
555 | periodics_reify (void) |
1224 | periodics_reify (EV_P) |
556 | { |
1225 | { |
557 | while (periodiccnt && periodics [0]->at <= ev_now) |
1226 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
558 | { |
1227 | { |
559 | struct ev_periodic *w = periodics [0]; |
1228 | ev_periodic *w = periodics [0]; |
|
|
1229 | |
|
|
1230 | /*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
560 | |
1231 | |
561 | /* first reschedule or stop timer */ |
1232 | /* first reschedule or stop timer */ |
562 | if (w->interval) |
1233 | if (w->reschedule_cb) |
563 | { |
1234 | { |
|
|
1235 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1236 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1237 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1238 | } |
|
|
1239 | else if (w->interval) |
|
|
1240 | { |
564 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1241 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
565 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1242 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
566 | downheap ((WT *)periodics, periodiccnt, 0); |
1243 | downheap ((WT *)periodics, periodiccnt, 0); |
567 | } |
1244 | } |
568 | else |
1245 | else |
569 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1246 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
570 | |
1247 | |
571 | event ((W)w, EV_TIMEOUT); |
1248 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
572 | } |
1249 | } |
573 | } |
1250 | } |
574 | |
1251 | |
575 | static void |
1252 | static void noinline |
576 | periodics_reschedule (ev_tstamp diff) |
1253 | periodics_reschedule (EV_P) |
577 | { |
1254 | { |
578 | int i; |
1255 | int i; |
579 | |
1256 | |
580 | /* adjust periodics after time jump */ |
1257 | /* adjust periodics after time jump */ |
581 | for (i = 0; i < periodiccnt; ++i) |
1258 | for (i = 0; i < periodiccnt; ++i) |
582 | { |
1259 | { |
583 | struct ev_periodic *w = periodics [i]; |
1260 | ev_periodic *w = periodics [i]; |
584 | |
1261 | |
|
|
1262 | if (w->reschedule_cb) |
|
|
1263 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
585 | if (w->interval) |
1264 | else if (w->interval) |
|
|
1265 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | /* now rebuild the heap */ |
|
|
1269 | for (i = periodiccnt >> 1; i--; ) |
|
|
1270 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1271 | } |
|
|
1272 | #endif |
|
|
1273 | |
|
|
1274 | #if EV_IDLE_ENABLE |
|
|
1275 | void inline_size |
|
|
1276 | idle_reify (EV_P) |
|
|
1277 | { |
|
|
1278 | if (expect_false (idleall)) |
|
|
1279 | { |
|
|
1280 | int pri; |
|
|
1281 | |
|
|
1282 | for (pri = NUMPRI; pri--; ) |
586 | { |
1283 | { |
587 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1284 | if (pendingcnt [pri]) |
|
|
1285 | break; |
588 | |
1286 | |
589 | if (fabs (diff) >= 1e-4) |
1287 | if (idlecnt [pri]) |
590 | { |
1288 | { |
591 | ev_periodic_stop (w); |
1289 | queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
592 | ev_periodic_start (w); |
1290 | break; |
593 | |
|
|
594 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
|
|
595 | } |
1291 | } |
596 | } |
1292 | } |
597 | } |
1293 | } |
598 | } |
1294 | } |
|
|
1295 | #endif |
599 | |
1296 | |
600 | static void |
1297 | int inline_size |
|
|
1298 | time_update_monotonic (EV_P) |
|
|
1299 | { |
|
|
1300 | mn_now = get_clock (); |
|
|
1301 | |
|
|
1302 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1303 | { |
|
|
1304 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1305 | return 0; |
|
|
1306 | } |
|
|
1307 | else |
|
|
1308 | { |
|
|
1309 | now_floor = mn_now; |
|
|
1310 | ev_rt_now = ev_time (); |
|
|
1311 | return 1; |
|
|
1312 | } |
|
|
1313 | } |
|
|
1314 | |
|
|
1315 | void inline_size |
601 | time_update (void) |
1316 | time_update (EV_P) |
602 | { |
1317 | { |
603 | int i; |
1318 | int i; |
604 | |
1319 | |
605 | ev_now = ev_time (); |
1320 | #if EV_USE_MONOTONIC |
606 | |
|
|
607 | if (have_monotonic) |
1321 | if (expect_true (have_monotonic)) |
608 | { |
1322 | { |
609 | ev_tstamp odiff = diff; |
1323 | if (time_update_monotonic (EV_A)) |
610 | |
|
|
611 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
612 | { |
1324 | { |
613 | now = get_clock (); |
1325 | ev_tstamp odiff = rtmn_diff; |
|
|
1326 | |
|
|
1327 | /* loop a few times, before making important decisions. |
|
|
1328 | * on the choice of "4": one iteration isn't enough, |
|
|
1329 | * in case we get preempted during the calls to |
|
|
1330 | * ev_time and get_clock. a second call is almost guaranteed |
|
|
1331 | * to succeed in that case, though. and looping a few more times |
|
|
1332 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1333 | * in the unlikely event of having been preempted here. |
|
|
1334 | */ |
|
|
1335 | for (i = 4; --i; ) |
|
|
1336 | { |
614 | diff = ev_now - now; |
1337 | rtmn_diff = ev_rt_now - mn_now; |
615 | |
1338 | |
616 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1339 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
617 | return; /* all is well */ |
1340 | return; /* all is well */ |
618 | |
1341 | |
619 | ev_now = ev_time (); |
1342 | ev_rt_now = ev_time (); |
|
|
1343 | mn_now = get_clock (); |
|
|
1344 | now_floor = mn_now; |
|
|
1345 | } |
|
|
1346 | |
|
|
1347 | # if EV_PERIODIC_ENABLE |
|
|
1348 | periodics_reschedule (EV_A); |
|
|
1349 | # endif |
|
|
1350 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1351 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
620 | } |
1352 | } |
621 | |
|
|
622 | periodics_reschedule (diff - odiff); |
|
|
623 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
624 | } |
1353 | } |
625 | else |
1354 | else |
|
|
1355 | #endif |
626 | { |
1356 | { |
627 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
1357 | ev_rt_now = ev_time (); |
|
|
1358 | |
|
|
1359 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
628 | { |
1360 | { |
|
|
1361 | #if EV_PERIODIC_ENABLE |
629 | periodics_reschedule (ev_now - now); |
1362 | periodics_reschedule (EV_A); |
|
|
1363 | #endif |
630 | |
1364 | |
631 | /* adjust timers. this is easy, as the offset is the same for all */ |
1365 | /* adjust timers. this is easy, as the offset is the same for all of them */ |
632 | for (i = 0; i < timercnt; ++i) |
1366 | for (i = 0; i < timercnt; ++i) |
633 | timers [i]->at += diff; |
1367 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
634 | } |
1368 | } |
635 | |
1369 | |
636 | now = ev_now; |
1370 | mn_now = ev_rt_now; |
637 | } |
1371 | } |
638 | } |
1372 | } |
639 | |
1373 | |
640 | int ev_loop_done; |
1374 | void |
|
|
1375 | ev_ref (EV_P) |
|
|
1376 | { |
|
|
1377 | ++activecnt; |
|
|
1378 | } |
641 | |
1379 | |
|
|
1380 | void |
|
|
1381 | ev_unref (EV_P) |
|
|
1382 | { |
|
|
1383 | --activecnt; |
|
|
1384 | } |
|
|
1385 | |
|
|
1386 | static int loop_done; |
|
|
1387 | |
|
|
1388 | void |
642 | void ev_loop (int flags) |
1389 | ev_loop (EV_P_ int flags) |
643 | { |
1390 | { |
644 | double block; |
|
|
645 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1391 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
|
|
1392 | ? EVUNLOOP_ONE |
|
|
1393 | : EVUNLOOP_CANCEL; |
|
|
1394 | |
|
|
1395 | call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
646 | |
1396 | |
647 | do |
1397 | do |
648 | { |
1398 | { |
|
|
1399 | #ifndef _WIN32 |
|
|
1400 | if (expect_false (curpid)) /* penalise the forking check even more */ |
|
|
1401 | if (expect_false (getpid () != curpid)) |
|
|
1402 | { |
|
|
1403 | curpid = getpid (); |
|
|
1404 | postfork = 1; |
|
|
1405 | } |
|
|
1406 | #endif |
|
|
1407 | |
|
|
1408 | #if EV_FORK_ENABLE |
|
|
1409 | /* we might have forked, so queue fork handlers */ |
|
|
1410 | if (expect_false (postfork)) |
|
|
1411 | if (forkcnt) |
|
|
1412 | { |
|
|
1413 | queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
|
|
1414 | call_pending (EV_A); |
|
|
1415 | } |
|
|
1416 | #endif |
|
|
1417 | |
649 | /* queue check watchers (and execute them) */ |
1418 | /* queue check watchers (and execute them) */ |
650 | if (preparecnt) |
1419 | if (expect_false (preparecnt)) |
651 | { |
1420 | { |
652 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1421 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
653 | call_pending (); |
1422 | call_pending (EV_A); |
654 | } |
1423 | } |
655 | |
1424 | |
|
|
1425 | if (expect_false (!activecnt)) |
|
|
1426 | break; |
|
|
1427 | |
|
|
1428 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1429 | if (expect_false (postfork)) |
|
|
1430 | loop_fork (EV_A); |
|
|
1431 | |
656 | /* update fd-related kernel structures */ |
1432 | /* update fd-related kernel structures */ |
657 | fd_reify (); |
1433 | fd_reify (EV_A); |
658 | |
1434 | |
659 | /* calculate blocking time */ |
1435 | /* calculate blocking time */ |
|
|
1436 | { |
|
|
1437 | ev_tstamp block; |
660 | |
1438 | |
661 | /* we only need this for !monotonic clockor timers, but as we basically |
1439 | if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt)) |
662 | always have timers, we just calculate it always */ |
1440 | block = 0.; /* do not block at all */ |
663 | ev_now = ev_time (); |
|
|
664 | |
|
|
665 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
|
|
666 | block = 0.; |
|
|
667 | else |
1441 | else |
668 | { |
1442 | { |
|
|
1443 | /* update time to cancel out callback processing overhead */ |
|
|
1444 | #if EV_USE_MONOTONIC |
|
|
1445 | if (expect_true (have_monotonic)) |
|
|
1446 | time_update_monotonic (EV_A); |
|
|
1447 | else |
|
|
1448 | #endif |
|
|
1449 | { |
|
|
1450 | ev_rt_now = ev_time (); |
|
|
1451 | mn_now = ev_rt_now; |
|
|
1452 | } |
|
|
1453 | |
669 | block = MAX_BLOCKTIME; |
1454 | block = MAX_BLOCKTIME; |
670 | |
1455 | |
671 | if (timercnt) |
1456 | if (timercnt) |
672 | { |
1457 | { |
673 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1458 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
674 | if (block > to) block = to; |
1459 | if (block > to) block = to; |
675 | } |
1460 | } |
676 | |
1461 | |
|
|
1462 | #if EV_PERIODIC_ENABLE |
677 | if (periodiccnt) |
1463 | if (periodiccnt) |
678 | { |
1464 | { |
679 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1465 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
680 | if (block > to) block = to; |
1466 | if (block > to) block = to; |
681 | } |
1467 | } |
|
|
1468 | #endif |
682 | |
1469 | |
683 | if (block < 0.) block = 0.; |
1470 | if (expect_false (block < 0.)) block = 0.; |
684 | } |
1471 | } |
685 | |
1472 | |
686 | method_poll (block); |
1473 | ++loop_count; |
|
|
1474 | backend_poll (EV_A_ block); |
|
|
1475 | } |
687 | |
1476 | |
688 | /* update ev_now, do magic */ |
1477 | /* update ev_rt_now, do magic */ |
689 | time_update (); |
1478 | time_update (EV_A); |
690 | |
1479 | |
691 | /* queue pending timers and reschedule them */ |
1480 | /* queue pending timers and reschedule them */ |
692 | timers_reify (); /* relative timers called last */ |
1481 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1482 | #if EV_PERIODIC_ENABLE |
693 | periodics_reify (); /* absolute timers called first */ |
1483 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1484 | #endif |
694 | |
1485 | |
|
|
1486 | #if EV_IDLE_ENABLE |
695 | /* queue idle watchers unless io or timers are pending */ |
1487 | /* queue idle watchers unless other events are pending */ |
696 | if (!pendingcnt) |
1488 | idle_reify (EV_A); |
697 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1489 | #endif |
698 | |
1490 | |
699 | /* queue check watchers, to be executed first */ |
1491 | /* queue check watchers, to be executed first */ |
700 | if (checkcnt) |
1492 | if (expect_false (checkcnt)) |
701 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1493 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
702 | |
1494 | |
703 | call_pending (); |
1495 | call_pending (EV_A); |
704 | } |
|
|
705 | while (!ev_loop_done); |
|
|
706 | |
1496 | |
707 | if (ev_loop_done != 2) |
1497 | } |
|
|
1498 | while (expect_true (activecnt && !loop_done)); |
|
|
1499 | |
|
|
1500 | if (loop_done == EVUNLOOP_ONE) |
|
|
1501 | loop_done = EVUNLOOP_CANCEL; |
|
|
1502 | } |
|
|
1503 | |
|
|
1504 | void |
|
|
1505 | ev_unloop (EV_P_ int how) |
|
|
1506 | { |
708 | ev_loop_done = 0; |
1507 | loop_done = how; |
709 | } |
1508 | } |
710 | |
1509 | |
711 | /*****************************************************************************/ |
1510 | /*****************************************************************************/ |
712 | |
1511 | |
713 | static void |
1512 | void inline_size |
714 | wlist_add (WL *head, WL elem) |
1513 | wlist_add (WL *head, WL elem) |
715 | { |
1514 | { |
716 | elem->next = *head; |
1515 | elem->next = *head; |
717 | *head = elem; |
1516 | *head = elem; |
718 | } |
1517 | } |
719 | |
1518 | |
720 | static void |
1519 | void inline_size |
721 | wlist_del (WL *head, WL elem) |
1520 | wlist_del (WL *head, WL elem) |
722 | { |
1521 | { |
723 | while (*head) |
1522 | while (*head) |
724 | { |
1523 | { |
725 | if (*head == elem) |
1524 | if (*head == elem) |
… | |
… | |
730 | |
1529 | |
731 | head = &(*head)->next; |
1530 | head = &(*head)->next; |
732 | } |
1531 | } |
733 | } |
1532 | } |
734 | |
1533 | |
735 | static void |
1534 | void inline_speed |
736 | ev_clear (W w) |
1535 | clear_pending (EV_P_ W w) |
737 | { |
1536 | { |
738 | if (w->pending) |
1537 | if (w->pending) |
739 | { |
1538 | { |
740 | pendings [w->pending - 1].w = 0; |
1539 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
741 | w->pending = 0; |
1540 | w->pending = 0; |
742 | } |
1541 | } |
743 | } |
1542 | } |
744 | |
1543 | |
745 | static void |
1544 | int |
|
|
1545 | ev_clear_pending (EV_P_ void *w) |
|
|
1546 | { |
|
|
1547 | W w_ = (W)w; |
|
|
1548 | int pending = w_->pending; |
|
|
1549 | |
|
|
1550 | if (!pending) |
|
|
1551 | return 0; |
|
|
1552 | |
|
|
1553 | w_->pending = 0; |
|
|
1554 | ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
|
|
1555 | p->w = 0; |
|
|
1556 | |
|
|
1557 | return p->events; |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | void inline_size |
|
|
1561 | pri_adjust (EV_P_ W w) |
|
|
1562 | { |
|
|
1563 | int pri = w->priority; |
|
|
1564 | pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
|
|
1565 | pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
|
|
1566 | w->priority = pri; |
|
|
1567 | } |
|
|
1568 | |
|
|
1569 | void inline_speed |
746 | ev_start (W w, int active) |
1570 | ev_start (EV_P_ W w, int active) |
747 | { |
1571 | { |
|
|
1572 | pri_adjust (EV_A_ w); |
748 | w->active = active; |
1573 | w->active = active; |
|
|
1574 | ev_ref (EV_A); |
749 | } |
1575 | } |
750 | |
1576 | |
751 | static void |
1577 | void inline_size |
752 | ev_stop (W w) |
1578 | ev_stop (EV_P_ W w) |
753 | { |
1579 | { |
|
|
1580 | ev_unref (EV_A); |
754 | w->active = 0; |
1581 | w->active = 0; |
755 | } |
1582 | } |
756 | |
1583 | |
757 | /*****************************************************************************/ |
1584 | /*****************************************************************************/ |
758 | |
1585 | |
759 | void |
1586 | void |
760 | ev_io_start (struct ev_io *w) |
1587 | ev_io_start (EV_P_ ev_io *w) |
761 | { |
1588 | { |
762 | if (ev_is_active (w)) |
|
|
763 | return; |
|
|
764 | |
|
|
765 | int fd = w->fd; |
1589 | int fd = w->fd; |
766 | |
1590 | |
|
|
1591 | if (expect_false (ev_is_active (w))) |
|
|
1592 | return; |
|
|
1593 | |
|
|
1594 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1595 | |
767 | ev_start ((W)w, 1); |
1596 | ev_start (EV_A_ (W)w, 1); |
768 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1597 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
769 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1598 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
770 | |
1599 | |
771 | fd_change (fd); |
1600 | fd_change (EV_A_ fd); |
772 | } |
1601 | } |
773 | |
1602 | |
774 | void |
1603 | void |
775 | ev_io_stop (struct ev_io *w) |
1604 | ev_io_stop (EV_P_ ev_io *w) |
776 | { |
1605 | { |
777 | ev_clear ((W)w); |
1606 | clear_pending (EV_A_ (W)w); |
778 | if (!ev_is_active (w)) |
1607 | if (expect_false (!ev_is_active (w))) |
779 | return; |
1608 | return; |
|
|
1609 | |
|
|
1610 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
780 | |
1611 | |
781 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1612 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
782 | ev_stop ((W)w); |
1613 | ev_stop (EV_A_ (W)w); |
783 | |
1614 | |
784 | fd_change (w->fd); |
1615 | fd_change (EV_A_ w->fd); |
785 | } |
1616 | } |
786 | |
1617 | |
787 | void |
1618 | void |
788 | ev_timer_start (struct ev_timer *w) |
1619 | ev_timer_start (EV_P_ ev_timer *w) |
789 | { |
1620 | { |
790 | if (ev_is_active (w)) |
1621 | if (expect_false (ev_is_active (w))) |
791 | return; |
1622 | return; |
792 | |
1623 | |
793 | w->at += now; |
1624 | ((WT)w)->at += mn_now; |
794 | |
1625 | |
795 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1626 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
796 | |
1627 | |
797 | ev_start ((W)w, ++timercnt); |
1628 | ev_start (EV_A_ (W)w, ++timercnt); |
798 | array_needsize (timers, timermax, timercnt, ); |
1629 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
799 | timers [timercnt - 1] = w; |
1630 | timers [timercnt - 1] = w; |
800 | upheap ((WT *)timers, timercnt - 1); |
1631 | upheap ((WT *)timers, timercnt - 1); |
801 | } |
|
|
802 | |
1632 | |
|
|
1633 | /*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/ |
|
|
1634 | } |
|
|
1635 | |
803 | void |
1636 | void |
804 | ev_timer_stop (struct ev_timer *w) |
1637 | ev_timer_stop (EV_P_ ev_timer *w) |
805 | { |
1638 | { |
806 | ev_clear ((W)w); |
1639 | clear_pending (EV_A_ (W)w); |
807 | if (!ev_is_active (w)) |
1640 | if (expect_false (!ev_is_active (w))) |
808 | return; |
1641 | return; |
809 | |
1642 | |
810 | if (w->active < timercnt--) |
1643 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1644 | |
|
|
1645 | { |
|
|
1646 | int active = ((W)w)->active; |
|
|
1647 | |
|
|
1648 | if (expect_true (--active < --timercnt)) |
811 | { |
1649 | { |
812 | timers [w->active - 1] = timers [timercnt]; |
1650 | timers [active] = timers [timercnt]; |
813 | downheap ((WT *)timers, timercnt, w->active - 1); |
1651 | adjustheap ((WT *)timers, timercnt, active); |
814 | } |
1652 | } |
|
|
1653 | } |
815 | |
1654 | |
816 | w->at = w->repeat; |
1655 | ((WT)w)->at -= mn_now; |
817 | |
1656 | |
818 | ev_stop ((W)w); |
1657 | ev_stop (EV_A_ (W)w); |
819 | } |
1658 | } |
820 | |
1659 | |
821 | void |
1660 | void |
822 | ev_timer_again (struct ev_timer *w) |
1661 | ev_timer_again (EV_P_ ev_timer *w) |
823 | { |
1662 | { |
824 | if (ev_is_active (w)) |
1663 | if (ev_is_active (w)) |
825 | { |
1664 | { |
826 | if (w->repeat) |
1665 | if (w->repeat) |
827 | { |
1666 | { |
828 | w->at = now + w->repeat; |
1667 | ((WT)w)->at = mn_now + w->repeat; |
829 | downheap ((WT *)timers, timercnt, w->active - 1); |
1668 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
830 | } |
1669 | } |
831 | else |
1670 | else |
832 | ev_timer_stop (w); |
1671 | ev_timer_stop (EV_A_ w); |
833 | } |
1672 | } |
834 | else if (w->repeat) |
1673 | else if (w->repeat) |
|
|
1674 | { |
|
|
1675 | w->at = w->repeat; |
835 | ev_timer_start (w); |
1676 | ev_timer_start (EV_A_ w); |
|
|
1677 | } |
836 | } |
1678 | } |
837 | |
1679 | |
|
|
1680 | #if EV_PERIODIC_ENABLE |
838 | void |
1681 | void |
839 | ev_periodic_start (struct ev_periodic *w) |
1682 | ev_periodic_start (EV_P_ ev_periodic *w) |
840 | { |
1683 | { |
841 | if (ev_is_active (w)) |
1684 | if (expect_false (ev_is_active (w))) |
842 | return; |
1685 | return; |
843 | |
1686 | |
844 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1687 | if (w->reschedule_cb) |
845 | |
1688 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1689 | else if (w->interval) |
|
|
1690 | { |
|
|
1691 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
846 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1692 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
847 | if (w->interval) |
|
|
848 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1693 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1694 | } |
849 | |
1695 | |
850 | ev_start ((W)w, ++periodiccnt); |
1696 | ev_start (EV_A_ (W)w, ++periodiccnt); |
851 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1697 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
852 | periodics [periodiccnt - 1] = w; |
1698 | periodics [periodiccnt - 1] = w; |
853 | upheap ((WT *)periodics, periodiccnt - 1); |
1699 | upheap ((WT *)periodics, periodiccnt - 1); |
854 | } |
|
|
855 | |
1700 | |
|
|
1701 | /*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/ |
|
|
1702 | } |
|
|
1703 | |
856 | void |
1704 | void |
857 | ev_periodic_stop (struct ev_periodic *w) |
1705 | ev_periodic_stop (EV_P_ ev_periodic *w) |
858 | { |
1706 | { |
859 | ev_clear ((W)w); |
1707 | clear_pending (EV_A_ (W)w); |
860 | if (!ev_is_active (w)) |
1708 | if (expect_false (!ev_is_active (w))) |
861 | return; |
1709 | return; |
862 | |
1710 | |
863 | if (w->active < periodiccnt--) |
1711 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1712 | |
|
|
1713 | { |
|
|
1714 | int active = ((W)w)->active; |
|
|
1715 | |
|
|
1716 | if (expect_true (--active < --periodiccnt)) |
864 | { |
1717 | { |
865 | periodics [w->active - 1] = periodics [periodiccnt]; |
1718 | periodics [active] = periodics [periodiccnt]; |
866 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1719 | adjustheap ((WT *)periodics, periodiccnt, active); |
867 | } |
1720 | } |
|
|
1721 | } |
868 | |
1722 | |
869 | ev_stop ((W)w); |
1723 | ev_stop (EV_A_ (W)w); |
870 | } |
1724 | } |
871 | |
1725 | |
872 | void |
1726 | void |
|
|
1727 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1728 | { |
|
|
1729 | /* TODO: use adjustheap and recalculation */ |
|
|
1730 | ev_periodic_stop (EV_A_ w); |
|
|
1731 | ev_periodic_start (EV_A_ w); |
|
|
1732 | } |
|
|
1733 | #endif |
|
|
1734 | |
|
|
1735 | #ifndef SA_RESTART |
|
|
1736 | # define SA_RESTART 0 |
|
|
1737 | #endif |
|
|
1738 | |
|
|
1739 | void |
873 | ev_signal_start (struct ev_signal *w) |
1740 | ev_signal_start (EV_P_ ev_signal *w) |
874 | { |
1741 | { |
|
|
1742 | #if EV_MULTIPLICITY |
|
|
1743 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1744 | #endif |
875 | if (ev_is_active (w)) |
1745 | if (expect_false (ev_is_active (w))) |
876 | return; |
1746 | return; |
877 | |
1747 | |
|
|
1748 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1749 | |
878 | ev_start ((W)w, 1); |
1750 | ev_start (EV_A_ (W)w, 1); |
879 | array_needsize (signals, signalmax, w->signum, signals_init); |
1751 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
880 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1752 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
881 | |
1753 | |
882 | if (!w->next) |
1754 | if (!((WL)w)->next) |
883 | { |
1755 | { |
|
|
1756 | #if _WIN32 |
|
|
1757 | signal (w->signum, sighandler); |
|
|
1758 | #else |
884 | struct sigaction sa; |
1759 | struct sigaction sa; |
885 | sa.sa_handler = sighandler; |
1760 | sa.sa_handler = sighandler; |
886 | sigfillset (&sa.sa_mask); |
1761 | sigfillset (&sa.sa_mask); |
887 | sa.sa_flags = 0; |
1762 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
888 | sigaction (w->signum, &sa, 0); |
1763 | sigaction (w->signum, &sa, 0); |
|
|
1764 | #endif |
889 | } |
1765 | } |
890 | } |
1766 | } |
891 | |
1767 | |
892 | void |
1768 | void |
893 | ev_signal_stop (struct ev_signal *w) |
1769 | ev_signal_stop (EV_P_ ev_signal *w) |
894 | { |
1770 | { |
895 | ev_clear ((W)w); |
1771 | clear_pending (EV_A_ (W)w); |
896 | if (!ev_is_active (w)) |
1772 | if (expect_false (!ev_is_active (w))) |
897 | return; |
1773 | return; |
898 | |
1774 | |
899 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1775 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
900 | ev_stop ((W)w); |
1776 | ev_stop (EV_A_ (W)w); |
901 | |
1777 | |
902 | if (!signals [w->signum - 1].head) |
1778 | if (!signals [w->signum - 1].head) |
903 | signal (w->signum, SIG_DFL); |
1779 | signal (w->signum, SIG_DFL); |
904 | } |
1780 | } |
905 | |
1781 | |
906 | void |
1782 | void |
907 | ev_idle_start (struct ev_idle *w) |
1783 | ev_child_start (EV_P_ ev_child *w) |
908 | { |
1784 | { |
|
|
1785 | #if EV_MULTIPLICITY |
|
|
1786 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1787 | #endif |
909 | if (ev_is_active (w)) |
1788 | if (expect_false (ev_is_active (w))) |
910 | return; |
1789 | return; |
911 | |
1790 | |
912 | ev_start ((W)w, ++idlecnt); |
1791 | ev_start (EV_A_ (W)w, 1); |
913 | array_needsize (idles, idlemax, idlecnt, ); |
1792 | wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
914 | idles [idlecnt - 1] = w; |
|
|
915 | } |
1793 | } |
916 | |
1794 | |
917 | void |
1795 | void |
918 | ev_idle_stop (struct ev_idle *w) |
1796 | ev_child_stop (EV_P_ ev_child *w) |
919 | { |
1797 | { |
920 | ev_clear ((W)w); |
1798 | clear_pending (EV_A_ (W)w); |
921 | if (ev_is_active (w)) |
1799 | if (expect_false (!ev_is_active (w))) |
922 | return; |
1800 | return; |
923 | |
1801 | |
924 | idles [w->active - 1] = idles [--idlecnt]; |
1802 | wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
925 | ev_stop ((W)w); |
1803 | ev_stop (EV_A_ (W)w); |
926 | } |
1804 | } |
927 | |
1805 | |
|
|
1806 | #if EV_STAT_ENABLE |
|
|
1807 | |
|
|
1808 | # ifdef _WIN32 |
|
|
1809 | # undef lstat |
|
|
1810 | # define lstat(a,b) _stati64 (a,b) |
|
|
1811 | # endif |
|
|
1812 | |
|
|
1813 | #define DEF_STAT_INTERVAL 5.0074891 |
|
|
1814 | #define MIN_STAT_INTERVAL 0.1074891 |
|
|
1815 | |
|
|
1816 | static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
|
|
1817 | |
|
|
1818 | #if EV_USE_INOTIFY |
|
|
1819 | # define EV_INOTIFY_BUFSIZE 8192 |
|
|
1820 | |
|
|
1821 | static void noinline |
|
|
1822 | infy_add (EV_P_ ev_stat *w) |
|
|
1823 | { |
|
|
1824 | 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); |
|
|
1825 | |
|
|
1826 | if (w->wd < 0) |
|
|
1827 | { |
|
|
1828 | ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
|
|
1829 | |
|
|
1830 | /* monitor some parent directory for speedup hints */ |
|
|
1831 | if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
|
|
1832 | { |
|
|
1833 | char path [4096]; |
|
|
1834 | strcpy (path, w->path); |
|
|
1835 | |
|
|
1836 | do |
|
|
1837 | { |
|
|
1838 | int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
|
|
1839 | | (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
|
|
1840 | |
|
|
1841 | char *pend = strrchr (path, '/'); |
|
|
1842 | |
|
|
1843 | if (!pend) |
|
|
1844 | break; /* whoops, no '/', complain to your admin */ |
|
|
1845 | |
|
|
1846 | *pend = 0; |
|
|
1847 | w->wd = inotify_add_watch (fs_fd, path, mask); |
|
|
1848 | } |
|
|
1849 | while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
|
|
1850 | } |
|
|
1851 | } |
|
|
1852 | else |
|
|
1853 | ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
|
|
1854 | |
|
|
1855 | if (w->wd >= 0) |
|
|
1856 | wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
|
|
1857 | } |
|
|
1858 | |
|
|
1859 | static void noinline |
|
|
1860 | infy_del (EV_P_ ev_stat *w) |
|
|
1861 | { |
|
|
1862 | int slot; |
|
|
1863 | int wd = w->wd; |
|
|
1864 | |
|
|
1865 | if (wd < 0) |
|
|
1866 | return; |
|
|
1867 | |
|
|
1868 | w->wd = -2; |
|
|
1869 | slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
|
|
1870 | wlist_del (&fs_hash [slot].head, (WL)w); |
|
|
1871 | |
|
|
1872 | /* remove this watcher, if others are watching it, they will rearm */ |
|
|
1873 | inotify_rm_watch (fs_fd, wd); |
|
|
1874 | } |
|
|
1875 | |
|
|
1876 | static void noinline |
|
|
1877 | infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
|
|
1878 | { |
|
|
1879 | if (slot < 0) |
|
|
1880 | /* overflow, need to check for all hahs slots */ |
|
|
1881 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1882 | infy_wd (EV_A_ slot, wd, ev); |
|
|
1883 | else |
|
|
1884 | { |
|
|
1885 | WL w_; |
|
|
1886 | |
|
|
1887 | for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
|
|
1888 | { |
|
|
1889 | ev_stat *w = (ev_stat *)w_; |
|
|
1890 | w_ = w_->next; /* lets us remove this watcher and all before it */ |
|
|
1891 | |
|
|
1892 | if (w->wd == wd || wd == -1) |
|
|
1893 | { |
|
|
1894 | if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
|
|
1895 | { |
|
|
1896 | w->wd = -1; |
|
|
1897 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1898 | } |
|
|
1899 | |
|
|
1900 | stat_timer_cb (EV_A_ &w->timer, 0); |
|
|
1901 | } |
|
|
1902 | } |
|
|
1903 | } |
|
|
1904 | } |
|
|
1905 | |
|
|
1906 | static void |
|
|
1907 | infy_cb (EV_P_ ev_io *w, int revents) |
|
|
1908 | { |
|
|
1909 | char buf [EV_INOTIFY_BUFSIZE]; |
|
|
1910 | struct inotify_event *ev = (struct inotify_event *)buf; |
|
|
1911 | int ofs; |
|
|
1912 | int len = read (fs_fd, buf, sizeof (buf)); |
|
|
1913 | |
|
|
1914 | for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
|
|
1915 | infy_wd (EV_A_ ev->wd, ev->wd, ev); |
|
|
1916 | } |
|
|
1917 | |
|
|
1918 | void inline_size |
|
|
1919 | infy_init (EV_P) |
|
|
1920 | { |
|
|
1921 | if (fs_fd != -2) |
|
|
1922 | return; |
|
|
1923 | |
|
|
1924 | fs_fd = inotify_init (); |
|
|
1925 | |
|
|
1926 | if (fs_fd >= 0) |
|
|
1927 | { |
|
|
1928 | ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
|
|
1929 | ev_set_priority (&fs_w, EV_MAXPRI); |
|
|
1930 | ev_io_start (EV_A_ &fs_w); |
|
|
1931 | } |
|
|
1932 | } |
|
|
1933 | |
|
|
1934 | void inline_size |
|
|
1935 | infy_fork (EV_P) |
|
|
1936 | { |
|
|
1937 | int slot; |
|
|
1938 | |
|
|
1939 | if (fs_fd < 0) |
|
|
1940 | return; |
|
|
1941 | |
|
|
1942 | close (fs_fd); |
|
|
1943 | fs_fd = inotify_init (); |
|
|
1944 | |
|
|
1945 | for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
|
|
1946 | { |
|
|
1947 | WL w_ = fs_hash [slot].head; |
|
|
1948 | fs_hash [slot].head = 0; |
|
|
1949 | |
|
|
1950 | while (w_) |
|
|
1951 | { |
|
|
1952 | ev_stat *w = (ev_stat *)w_; |
|
|
1953 | w_ = w_->next; /* lets us add this watcher */ |
|
|
1954 | |
|
|
1955 | w->wd = -1; |
|
|
1956 | |
|
|
1957 | if (fs_fd >= 0) |
|
|
1958 | infy_add (EV_A_ w); /* re-add, no matter what */ |
|
|
1959 | else |
|
|
1960 | ev_timer_start (EV_A_ &w->timer); |
|
|
1961 | } |
|
|
1962 | |
|
|
1963 | } |
|
|
1964 | } |
|
|
1965 | |
|
|
1966 | #endif |
|
|
1967 | |
928 | void |
1968 | void |
|
|
1969 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
1970 | { |
|
|
1971 | if (lstat (w->path, &w->attr) < 0) |
|
|
1972 | w->attr.st_nlink = 0; |
|
|
1973 | else if (!w->attr.st_nlink) |
|
|
1974 | w->attr.st_nlink = 1; |
|
|
1975 | } |
|
|
1976 | |
|
|
1977 | static void noinline |
|
|
1978 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
1979 | { |
|
|
1980 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
1981 | |
|
|
1982 | /* we copy this here each the time so that */ |
|
|
1983 | /* prev has the old value when the callback gets invoked */ |
|
|
1984 | w->prev = w->attr; |
|
|
1985 | ev_stat_stat (EV_A_ w); |
|
|
1986 | |
|
|
1987 | /* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
|
|
1988 | if ( |
|
|
1989 | w->prev.st_dev != w->attr.st_dev |
|
|
1990 | || w->prev.st_ino != w->attr.st_ino |
|
|
1991 | || w->prev.st_mode != w->attr.st_mode |
|
|
1992 | || w->prev.st_nlink != w->attr.st_nlink |
|
|
1993 | || w->prev.st_uid != w->attr.st_uid |
|
|
1994 | || w->prev.st_gid != w->attr.st_gid |
|
|
1995 | || w->prev.st_rdev != w->attr.st_rdev |
|
|
1996 | || w->prev.st_size != w->attr.st_size |
|
|
1997 | || w->prev.st_atime != w->attr.st_atime |
|
|
1998 | || w->prev.st_mtime != w->attr.st_mtime |
|
|
1999 | || w->prev.st_ctime != w->attr.st_ctime |
|
|
2000 | ) { |
|
|
2001 | #if EV_USE_INOTIFY |
|
|
2002 | infy_del (EV_A_ w); |
|
|
2003 | infy_add (EV_A_ w); |
|
|
2004 | ev_stat_stat (EV_A_ w); /* avoid race... */ |
|
|
2005 | #endif |
|
|
2006 | |
|
|
2007 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
2008 | } |
|
|
2009 | } |
|
|
2010 | |
|
|
2011 | void |
|
|
2012 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
2013 | { |
|
|
2014 | if (expect_false (ev_is_active (w))) |
|
|
2015 | return; |
|
|
2016 | |
|
|
2017 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
2018 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
2019 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
2020 | |
|
|
2021 | ev_stat_stat (EV_A_ w); |
|
|
2022 | |
|
|
2023 | if (w->interval < MIN_STAT_INTERVAL) |
|
|
2024 | w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
|
|
2025 | |
|
|
2026 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
2027 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
2028 | |
|
|
2029 | #if EV_USE_INOTIFY |
|
|
2030 | infy_init (EV_A); |
|
|
2031 | |
|
|
2032 | if (fs_fd >= 0) |
|
|
2033 | infy_add (EV_A_ w); |
|
|
2034 | else |
|
|
2035 | #endif |
|
|
2036 | ev_timer_start (EV_A_ &w->timer); |
|
|
2037 | |
|
|
2038 | ev_start (EV_A_ (W)w, 1); |
|
|
2039 | } |
|
|
2040 | |
|
|
2041 | void |
|
|
2042 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
2043 | { |
|
|
2044 | clear_pending (EV_A_ (W)w); |
|
|
2045 | if (expect_false (!ev_is_active (w))) |
|
|
2046 | return; |
|
|
2047 | |
|
|
2048 | #if EV_USE_INOTIFY |
|
|
2049 | infy_del (EV_A_ w); |
|
|
2050 | #endif |
|
|
2051 | ev_timer_stop (EV_A_ &w->timer); |
|
|
2052 | |
|
|
2053 | ev_stop (EV_A_ (W)w); |
|
|
2054 | } |
|
|
2055 | #endif |
|
|
2056 | |
|
|
2057 | #if EV_IDLE_ENABLE |
|
|
2058 | void |
|
|
2059 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
2060 | { |
|
|
2061 | if (expect_false (ev_is_active (w))) |
|
|
2062 | return; |
|
|
2063 | |
|
|
2064 | pri_adjust (EV_A_ (W)w); |
|
|
2065 | |
|
|
2066 | { |
|
|
2067 | int active = ++idlecnt [ABSPRI (w)]; |
|
|
2068 | |
|
|
2069 | ++idleall; |
|
|
2070 | ev_start (EV_A_ (W)w, active); |
|
|
2071 | |
|
|
2072 | array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
|
|
2073 | idles [ABSPRI (w)][active - 1] = w; |
|
|
2074 | } |
|
|
2075 | } |
|
|
2076 | |
|
|
2077 | void |
|
|
2078 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
2079 | { |
|
|
2080 | clear_pending (EV_A_ (W)w); |
|
|
2081 | if (expect_false (!ev_is_active (w))) |
|
|
2082 | return; |
|
|
2083 | |
|
|
2084 | { |
|
|
2085 | int active = ((W)w)->active; |
|
|
2086 | |
|
|
2087 | idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
|
|
2088 | ((W)idles [ABSPRI (w)][active - 1])->active = active; |
|
|
2089 | |
|
|
2090 | ev_stop (EV_A_ (W)w); |
|
|
2091 | --idleall; |
|
|
2092 | } |
|
|
2093 | } |
|
|
2094 | #endif |
|
|
2095 | |
|
|
2096 | void |
929 | ev_prepare_start (struct ev_prepare *w) |
2097 | ev_prepare_start (EV_P_ ev_prepare *w) |
930 | { |
2098 | { |
931 | if (ev_is_active (w)) |
2099 | if (expect_false (ev_is_active (w))) |
932 | return; |
2100 | return; |
933 | |
2101 | |
934 | ev_start ((W)w, ++preparecnt); |
2102 | ev_start (EV_A_ (W)w, ++preparecnt); |
935 | array_needsize (prepares, preparemax, preparecnt, ); |
2103 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
936 | prepares [preparecnt - 1] = w; |
2104 | prepares [preparecnt - 1] = w; |
937 | } |
2105 | } |
938 | |
2106 | |
939 | void |
2107 | void |
940 | ev_prepare_stop (struct ev_prepare *w) |
2108 | ev_prepare_stop (EV_P_ ev_prepare *w) |
941 | { |
2109 | { |
942 | ev_clear ((W)w); |
2110 | clear_pending (EV_A_ (W)w); |
943 | if (ev_is_active (w)) |
2111 | if (expect_false (!ev_is_active (w))) |
944 | return; |
2112 | return; |
945 | |
2113 | |
|
|
2114 | { |
|
|
2115 | int active = ((W)w)->active; |
946 | prepares [w->active - 1] = prepares [--preparecnt]; |
2116 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
2117 | ((W)prepares [active - 1])->active = active; |
|
|
2118 | } |
|
|
2119 | |
947 | ev_stop ((W)w); |
2120 | ev_stop (EV_A_ (W)w); |
948 | } |
2121 | } |
949 | |
2122 | |
950 | void |
2123 | void |
951 | ev_check_start (struct ev_check *w) |
2124 | ev_check_start (EV_P_ ev_check *w) |
952 | { |
2125 | { |
953 | if (ev_is_active (w)) |
2126 | if (expect_false (ev_is_active (w))) |
954 | return; |
2127 | return; |
955 | |
2128 | |
956 | ev_start ((W)w, ++checkcnt); |
2129 | ev_start (EV_A_ (W)w, ++checkcnt); |
957 | array_needsize (checks, checkmax, checkcnt, ); |
2130 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
958 | checks [checkcnt - 1] = w; |
2131 | checks [checkcnt - 1] = w; |
959 | } |
2132 | } |
960 | |
2133 | |
961 | void |
2134 | void |
962 | ev_check_stop (struct ev_check *w) |
2135 | ev_check_stop (EV_P_ ev_check *w) |
963 | { |
2136 | { |
964 | ev_clear ((W)w); |
2137 | clear_pending (EV_A_ (W)w); |
965 | if (ev_is_active (w)) |
2138 | if (expect_false (!ev_is_active (w))) |
966 | return; |
2139 | return; |
967 | |
2140 | |
|
|
2141 | { |
|
|
2142 | int active = ((W)w)->active; |
968 | checks [w->active - 1] = checks [--checkcnt]; |
2143 | checks [active - 1] = checks [--checkcnt]; |
|
|
2144 | ((W)checks [active - 1])->active = active; |
|
|
2145 | } |
|
|
2146 | |
969 | ev_stop ((W)w); |
2147 | ev_stop (EV_A_ (W)w); |
970 | } |
2148 | } |
971 | |
2149 | |
972 | void |
2150 | #if EV_EMBED_ENABLE |
973 | ev_child_start (struct ev_child *w) |
2151 | void noinline |
|
|
2152 | ev_embed_sweep (EV_P_ ev_embed *w) |
974 | { |
2153 | { |
|
|
2154 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
|
|
2155 | } |
|
|
2156 | |
|
|
2157 | static void |
|
|
2158 | embed_cb (EV_P_ ev_io *io, int revents) |
|
|
2159 | { |
|
|
2160 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
2161 | |
975 | if (ev_is_active (w)) |
2162 | if (ev_cb (w)) |
976 | return; |
2163 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
2164 | else |
|
|
2165 | ev_embed_sweep (loop, w); |
|
|
2166 | } |
977 | |
2167 | |
|
|
2168 | void |
|
|
2169 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
2170 | { |
|
|
2171 | if (expect_false (ev_is_active (w))) |
|
|
2172 | return; |
|
|
2173 | |
|
|
2174 | { |
|
|
2175 | struct ev_loop *loop = w->loop; |
|
|
2176 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
2177 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
2178 | } |
|
|
2179 | |
|
|
2180 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
2181 | ev_io_start (EV_A_ &w->io); |
|
|
2182 | |
978 | ev_start ((W)w, 1); |
2183 | ev_start (EV_A_ (W)w, 1); |
979 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
980 | } |
2184 | } |
981 | |
2185 | |
982 | void |
2186 | void |
983 | ev_child_stop (struct ev_child *w) |
2187 | ev_embed_stop (EV_P_ ev_embed *w) |
984 | { |
2188 | { |
985 | ev_clear ((W)w); |
2189 | clear_pending (EV_A_ (W)w); |
986 | if (ev_is_active (w)) |
2190 | if (expect_false (!ev_is_active (w))) |
987 | return; |
2191 | return; |
988 | |
2192 | |
989 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
2193 | ev_io_stop (EV_A_ &w->io); |
|
|
2194 | |
990 | ev_stop ((W)w); |
2195 | ev_stop (EV_A_ (W)w); |
991 | } |
2196 | } |
|
|
2197 | #endif |
|
|
2198 | |
|
|
2199 | #if EV_FORK_ENABLE |
|
|
2200 | void |
|
|
2201 | ev_fork_start (EV_P_ ev_fork *w) |
|
|
2202 | { |
|
|
2203 | if (expect_false (ev_is_active (w))) |
|
|
2204 | return; |
|
|
2205 | |
|
|
2206 | ev_start (EV_A_ (W)w, ++forkcnt); |
|
|
2207 | array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
|
|
2208 | forks [forkcnt - 1] = w; |
|
|
2209 | } |
|
|
2210 | |
|
|
2211 | void |
|
|
2212 | ev_fork_stop (EV_P_ ev_fork *w) |
|
|
2213 | { |
|
|
2214 | clear_pending (EV_A_ (W)w); |
|
|
2215 | if (expect_false (!ev_is_active (w))) |
|
|
2216 | return; |
|
|
2217 | |
|
|
2218 | { |
|
|
2219 | int active = ((W)w)->active; |
|
|
2220 | forks [active - 1] = forks [--forkcnt]; |
|
|
2221 | ((W)forks [active - 1])->active = active; |
|
|
2222 | } |
|
|
2223 | |
|
|
2224 | ev_stop (EV_A_ (W)w); |
|
|
2225 | } |
|
|
2226 | #endif |
992 | |
2227 | |
993 | /*****************************************************************************/ |
2228 | /*****************************************************************************/ |
994 | |
2229 | |
995 | struct ev_once |
2230 | struct ev_once |
996 | { |
2231 | { |
997 | struct ev_io io; |
2232 | ev_io io; |
998 | struct ev_timer to; |
2233 | ev_timer to; |
999 | void (*cb)(int revents, void *arg); |
2234 | void (*cb)(int revents, void *arg); |
1000 | void *arg; |
2235 | void *arg; |
1001 | }; |
2236 | }; |
1002 | |
2237 | |
1003 | static void |
2238 | static void |
1004 | once_cb (struct ev_once *once, int revents) |
2239 | once_cb (EV_P_ struct ev_once *once, int revents) |
1005 | { |
2240 | { |
1006 | void (*cb)(int revents, void *arg) = once->cb; |
2241 | void (*cb)(int revents, void *arg) = once->cb; |
1007 | void *arg = once->arg; |
2242 | void *arg = once->arg; |
1008 | |
2243 | |
1009 | ev_io_stop (&once->io); |
2244 | ev_io_stop (EV_A_ &once->io); |
1010 | ev_timer_stop (&once->to); |
2245 | ev_timer_stop (EV_A_ &once->to); |
1011 | free (once); |
2246 | ev_free (once); |
1012 | |
2247 | |
1013 | cb (revents, arg); |
2248 | cb (revents, arg); |
1014 | } |
2249 | } |
1015 | |
2250 | |
1016 | static void |
2251 | static void |
1017 | once_cb_io (struct ev_io *w, int revents) |
2252 | once_cb_io (EV_P_ ev_io *w, int revents) |
1018 | { |
2253 | { |
1019 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2254 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1020 | } |
2255 | } |
1021 | |
2256 | |
1022 | static void |
2257 | static void |
1023 | once_cb_to (struct ev_timer *w, int revents) |
2258 | once_cb_to (EV_P_ ev_timer *w, int revents) |
1024 | { |
2259 | { |
1025 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2260 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1026 | } |
2261 | } |
1027 | |
2262 | |
1028 | void |
2263 | void |
1029 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2264 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1030 | { |
2265 | { |
1031 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
2266 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1032 | |
2267 | |
1033 | if (!once) |
2268 | if (expect_false (!once)) |
|
|
2269 | { |
1034 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2270 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1035 | else |
2271 | return; |
1036 | { |
2272 | } |
|
|
2273 | |
1037 | once->cb = cb; |
2274 | once->cb = cb; |
1038 | once->arg = arg; |
2275 | once->arg = arg; |
1039 | |
2276 | |
1040 | ev_watcher_init (&once->io, once_cb_io); |
2277 | ev_init (&once->io, once_cb_io); |
1041 | if (fd >= 0) |
2278 | if (fd >= 0) |
1042 | { |
2279 | { |
1043 | ev_io_set (&once->io, fd, events); |
2280 | ev_io_set (&once->io, fd, events); |
1044 | ev_io_start (&once->io); |
2281 | ev_io_start (EV_A_ &once->io); |
1045 | } |
2282 | } |
1046 | |
2283 | |
1047 | ev_watcher_init (&once->to, once_cb_to); |
2284 | ev_init (&once->to, once_cb_to); |
1048 | if (timeout >= 0.) |
2285 | if (timeout >= 0.) |
1049 | { |
2286 | { |
1050 | ev_timer_set (&once->to, timeout, 0.); |
2287 | ev_timer_set (&once->to, timeout, 0.); |
1051 | ev_timer_start (&once->to); |
2288 | ev_timer_start (EV_A_ &once->to); |
1052 | } |
|
|
1053 | } |
|
|
1054 | } |
|
|
1055 | |
|
|
1056 | /*****************************************************************************/ |
|
|
1057 | |
|
|
1058 | #if 0 |
|
|
1059 | |
|
|
1060 | struct ev_io wio; |
|
|
1061 | |
|
|
1062 | static void |
|
|
1063 | sin_cb (struct ev_io *w, int revents) |
|
|
1064 | { |
|
|
1065 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | static void |
|
|
1069 | ocb (struct ev_timer *w, int revents) |
|
|
1070 | { |
|
|
1071 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1072 | ev_timer_stop (w); |
|
|
1073 | ev_timer_start (w); |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | static void |
|
|
1077 | scb (struct ev_signal *w, int revents) |
|
|
1078 | { |
|
|
1079 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1080 | ev_io_stop (&wio); |
|
|
1081 | ev_io_start (&wio); |
|
|
1082 | } |
|
|
1083 | |
|
|
1084 | static void |
|
|
1085 | gcb (struct ev_signal *w, int revents) |
|
|
1086 | { |
|
|
1087 | fprintf (stderr, "generic %x\n", revents); |
|
|
1088 | |
|
|
1089 | } |
|
|
1090 | |
|
|
1091 | int main (void) |
|
|
1092 | { |
|
|
1093 | ev_init (0); |
|
|
1094 | |
|
|
1095 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1096 | ev_io_start (&wio); |
|
|
1097 | |
|
|
1098 | struct ev_timer t[10000]; |
|
|
1099 | |
|
|
1100 | #if 0 |
|
|
1101 | int i; |
|
|
1102 | for (i = 0; i < 10000; ++i) |
|
|
1103 | { |
2289 | } |
1104 | struct ev_timer *w = t + i; |
|
|
1105 | ev_watcher_init (w, ocb, i); |
|
|
1106 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1107 | ev_timer_start (w); |
|
|
1108 | if (drand48 () < 0.5) |
|
|
1109 | ev_timer_stop (w); |
|
|
1110 | } |
|
|
1111 | #endif |
|
|
1112 | |
|
|
1113 | struct ev_timer t1; |
|
|
1114 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1115 | ev_timer_start (&t1); |
|
|
1116 | |
|
|
1117 | struct ev_signal sig; |
|
|
1118 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1119 | ev_signal_start (&sig); |
|
|
1120 | |
|
|
1121 | struct ev_check cw; |
|
|
1122 | ev_check_init (&cw, gcb); |
|
|
1123 | ev_check_start (&cw); |
|
|
1124 | |
|
|
1125 | struct ev_idle iw; |
|
|
1126 | ev_idle_init (&iw, gcb); |
|
|
1127 | ev_idle_start (&iw); |
|
|
1128 | |
|
|
1129 | ev_loop (0); |
|
|
1130 | |
|
|
1131 | return 0; |
|
|
1132 | } |
2290 | } |
1133 | |
2291 | |
|
|
2292 | #ifdef __cplusplus |
|
|
2293 | } |
1134 | #endif |
2294 | #endif |
1135 | |
2295 | |
1136 | |
|
|
1137 | |
|
|
1138 | |
|
|