1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
29 | |
31 | |
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32 | #ifdef __cplusplus |
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33 | extern "C" { |
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34 | #endif |
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35 | |
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36 | #ifndef EV_STANDALONE |
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37 | # include "config.h" |
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38 | |
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39 | # if HAVE_CLOCK_GETTIME |
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40 | # ifndef EV_USE_MONOTONIC |
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41 | # define EV_USE_MONOTONIC 1 |
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42 | # endif |
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43 | # ifndef EV_USE_REALTIME |
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44 | # define EV_USE_REALTIME 1 |
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45 | # endif |
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46 | # endif |
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47 | |
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48 | # if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT) |
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49 | # define EV_USE_SELECT 1 |
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50 | # endif |
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51 | |
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52 | # if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL) && !defined (__APPLE__) |
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53 | # define EV_USE_POLL 1 |
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54 | # endif |
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55 | |
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56 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL) |
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57 | # define EV_USE_EPOLL 1 |
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58 | # endif |
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59 | |
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60 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE) && !defined (__APPLE__) |
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61 | # define EV_USE_KQUEUE 1 |
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62 | # endif |
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63 | |
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64 | #endif |
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65 | |
30 | #include <math.h> |
66 | #include <math.h> |
31 | #include <stdlib.h> |
67 | #include <stdlib.h> |
32 | #include <unistd.h> |
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33 | #include <fcntl.h> |
68 | #include <fcntl.h> |
34 | #include <signal.h> |
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35 | #include <stddef.h> |
69 | #include <stddef.h> |
36 | |
70 | |
37 | #include <stdio.h> |
71 | #include <stdio.h> |
38 | |
72 | |
39 | #include <assert.h> |
73 | #include <assert.h> |
40 | #include <errno.h> |
74 | #include <errno.h> |
41 | #include <sys/types.h> |
75 | #include <sys/types.h> |
42 | #include <sys/wait.h> |
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43 | #include <sys/time.h> |
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44 | #include <time.h> |
76 | #include <time.h> |
45 | |
77 | |
46 | #ifndef HAVE_MONOTONIC |
78 | #include <signal.h> |
47 | # ifdef CLOCK_MONOTONIC |
79 | |
48 | # define HAVE_MONOTONIC 1 |
80 | #ifndef _WIN32 |
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81 | # include <unistd.h> |
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82 | # include <sys/time.h> |
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83 | # include <sys/wait.h> |
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84 | #else |
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85 | # define WIN32_LEAN_AND_MEAN |
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86 | # include <windows.h> |
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87 | # ifndef EV_SELECT_IS_WINSOCKET |
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88 | # define EV_SELECT_IS_WINSOCKET 1 |
49 | # endif |
89 | # endif |
50 | #endif |
90 | #endif |
51 | |
91 | |
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92 | /**/ |
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93 | |
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94 | #ifndef EV_USE_MONOTONIC |
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95 | # define EV_USE_MONOTONIC 1 |
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96 | #endif |
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97 | |
52 | #ifndef HAVE_SELECT |
98 | #ifndef EV_USE_SELECT |
53 | # define HAVE_SELECT 1 |
99 | # define EV_USE_SELECT 1 |
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100 | # define EV_SELECT_USE_FD_SET 1 |
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101 | #endif |
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102 | |
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103 | #ifndef EV_USE_POLL |
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104 | # ifdef _WIN32 |
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105 | # define EV_USE_POLL 0 |
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106 | # else |
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107 | # define EV_USE_POLL 1 |
54 | #endif |
108 | # endif |
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109 | #endif |
55 | |
110 | |
56 | #ifndef HAVE_EPOLL |
111 | #ifndef EV_USE_EPOLL |
57 | # define HAVE_EPOLL 0 |
112 | # define EV_USE_EPOLL 0 |
58 | #endif |
113 | #endif |
59 | |
114 | |
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115 | #ifndef EV_USE_KQUEUE |
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116 | # define EV_USE_KQUEUE 0 |
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117 | #endif |
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118 | |
60 | #ifndef HAVE_REALTIME |
119 | #ifndef EV_USE_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
120 | # define EV_USE_REALTIME 1 |
62 | #endif |
121 | #endif |
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122 | |
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123 | /**/ |
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124 | |
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125 | #ifndef CLOCK_MONOTONIC |
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126 | # undef EV_USE_MONOTONIC |
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127 | # define EV_USE_MONOTONIC 0 |
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128 | #endif |
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129 | |
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130 | #ifndef CLOCK_REALTIME |
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131 | # undef EV_USE_REALTIME |
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132 | # define EV_USE_REALTIME 0 |
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133 | #endif |
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134 | |
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135 | #if EV_SELECT_IS_WINSOCKET |
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136 | # include <winsock.h> |
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137 | #endif |
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138 | |
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139 | /**/ |
63 | |
140 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
141 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
142 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
143 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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144 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
67 | |
145 | |
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146 | #ifdef EV_H |
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147 | # include EV_H |
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148 | #else |
68 | #include "ev.h" |
149 | # include "ev.h" |
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150 | #endif |
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151 | |
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152 | #if __GNUC__ >= 3 |
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153 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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154 | # define inline inline |
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155 | #else |
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156 | # define expect(expr,value) (expr) |
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157 | # define inline static |
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158 | #endif |
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159 | |
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160 | #define expect_false(expr) expect ((expr) != 0, 0) |
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161 | #define expect_true(expr) expect ((expr) != 0, 1) |
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162 | |
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163 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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164 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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165 | |
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166 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
69 | |
167 | |
70 | typedef struct ev_watcher *W; |
168 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
169 | typedef struct ev_watcher_list *WL; |
72 | typedef struct ev_watcher_time *WT; |
170 | typedef struct ev_watcher_time *WT; |
73 | |
171 | |
74 | static ev_tstamp now, diff; /* monotonic clock */ |
172 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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173 | |
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174 | #ifdef _WIN32 |
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175 | # include "ev_win32.c" |
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176 | #endif |
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177 | |
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178 | /*****************************************************************************/ |
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179 | |
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180 | static void (*syserr_cb)(const char *msg); |
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181 | |
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182 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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183 | { |
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184 | syserr_cb = cb; |
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185 | } |
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186 | |
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187 | static void |
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188 | syserr (const char *msg) |
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189 | { |
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190 | if (!msg) |
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191 | msg = "(libev) system error"; |
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192 | |
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193 | if (syserr_cb) |
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194 | syserr_cb (msg); |
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195 | else |
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196 | { |
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197 | perror (msg); |
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198 | abort (); |
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199 | } |
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200 | } |
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201 | |
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202 | static void *(*alloc)(void *ptr, long size); |
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203 | |
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204 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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205 | { |
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206 | alloc = cb; |
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207 | } |
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208 | |
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209 | static void * |
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210 | ev_realloc (void *ptr, long size) |
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211 | { |
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212 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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213 | |
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214 | if (!ptr && size) |
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215 | { |
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216 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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217 | abort (); |
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218 | } |
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219 | |
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220 | return ptr; |
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221 | } |
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222 | |
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223 | #define ev_malloc(size) ev_realloc (0, (size)) |
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224 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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225 | |
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226 | /*****************************************************************************/ |
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227 | |
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228 | typedef struct |
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229 | { |
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230 | WL head; |
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231 | unsigned char events; |
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232 | unsigned char reify; |
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233 | #if EV_SELECT_IS_WINSOCKET |
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234 | SOCKET handle; |
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235 | #endif |
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236 | } ANFD; |
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237 | |
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238 | typedef struct |
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239 | { |
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240 | W w; |
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241 | int events; |
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242 | } ANPENDING; |
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243 | |
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244 | #if EV_MULTIPLICITY |
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245 | |
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246 | struct ev_loop |
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247 | { |
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248 | ev_tstamp ev_rt_now; |
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249 | #define ev_rt_now ((loop)->ev_rt_now) |
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250 | #define VAR(name,decl) decl; |
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251 | #include "ev_vars.h" |
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252 | #undef VAR |
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253 | }; |
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254 | #include "ev_wrap.h" |
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255 | |
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256 | struct ev_loop default_loop_struct; |
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257 | static struct ev_loop *default_loop; |
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258 | |
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259 | #else |
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260 | |
75 | ev_tstamp ev_now; |
261 | ev_tstamp ev_rt_now; |
76 | int ev_method; |
262 | #define VAR(name,decl) static decl; |
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263 | #include "ev_vars.h" |
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264 | #undef VAR |
77 | |
265 | |
78 | static int have_monotonic; /* runtime */ |
266 | static int default_loop; |
79 | |
267 | |
80 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
268 | #endif |
81 | static void (*method_modify)(int fd, int oev, int nev); |
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82 | static void (*method_poll)(ev_tstamp timeout); |
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83 | |
269 | |
84 | /*****************************************************************************/ |
270 | /*****************************************************************************/ |
85 | |
271 | |
86 | ev_tstamp |
272 | ev_tstamp |
87 | ev_time (void) |
273 | ev_time (void) |
88 | { |
274 | { |
89 | #if HAVE_REALTIME |
275 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
276 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
277 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
278 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
279 | #else |
94 | struct timeval tv; |
280 | struct timeval tv; |
95 | gettimeofday (&tv, 0); |
281 | gettimeofday (&tv, 0); |
96 | return tv.tv_sec + tv.tv_usec * 1e-6; |
282 | return tv.tv_sec + tv.tv_usec * 1e-6; |
97 | #endif |
283 | #endif |
98 | } |
284 | } |
99 | |
285 | |
100 | static ev_tstamp |
286 | inline ev_tstamp |
101 | get_clock (void) |
287 | get_clock (void) |
102 | { |
288 | { |
103 | #if HAVE_MONOTONIC |
289 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
290 | if (expect_true (have_monotonic)) |
105 | { |
291 | { |
106 | struct timespec ts; |
292 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
293 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
294 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
295 | } |
110 | #endif |
296 | #endif |
111 | |
297 | |
112 | return ev_time (); |
298 | return ev_time (); |
113 | } |
299 | } |
114 | |
300 | |
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301 | #if EV_MULTIPLICITY |
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302 | ev_tstamp |
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303 | ev_now (EV_P) |
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304 | { |
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305 | return ev_rt_now; |
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306 | } |
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307 | #endif |
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308 | |
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309 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
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310 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
311 | #define array_needsize(type,base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
312 | if (expect_false ((cnt) > cur)) \ |
117 | { \ |
313 | { \ |
118 | int newcnt = cur; \ |
314 | int newcnt = cur; \ |
119 | do \ |
315 | do \ |
120 | { \ |
316 | { \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
317 | newcnt = array_roundsize (type, newcnt << 1); \ |
122 | } \ |
318 | } \ |
123 | while ((cnt) > newcnt); \ |
319 | while ((cnt) > newcnt); \ |
124 | \ |
320 | \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
321 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
126 | init (base + cur, newcnt - cur); \ |
322 | init (base + cur, newcnt - cur); \ |
127 | cur = newcnt; \ |
323 | cur = newcnt; \ |
128 | } |
324 | } |
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325 | |
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326 | #define array_slim(type,stem) \ |
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327 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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328 | { \ |
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329 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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330 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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331 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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332 | } |
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333 | |
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334 | #define array_free(stem, idx) \ |
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335 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
129 | |
336 | |
130 | /*****************************************************************************/ |
337 | /*****************************************************************************/ |
131 | |
338 | |
132 | typedef struct |
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133 | { |
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134 | struct ev_io *head; |
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135 | unsigned char wev, rev; /* want, received event set */ |
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136 | } ANFD; |
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137 | |
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138 | static ANFD *anfds; |
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139 | static int anfdmax; |
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140 | |
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141 | static int *fdchanges; |
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142 | static int fdchangemax, fdchangecnt; |
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143 | |
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144 | static void |
339 | static void |
145 | anfds_init (ANFD *base, int count) |
340 | anfds_init (ANFD *base, int count) |
146 | { |
341 | { |
147 | while (count--) |
342 | while (count--) |
148 | { |
343 | { |
149 | base->head = 0; |
344 | base->head = 0; |
150 | base->wev = base->rev = EV_NONE; |
345 | base->events = EV_NONE; |
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346 | base->reify = 0; |
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347 | |
151 | ++base; |
348 | ++base; |
152 | } |
349 | } |
153 | } |
350 | } |
154 | |
351 | |
155 | typedef struct |
352 | void |
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353 | ev_feed_event (EV_P_ void *w, int revents) |
156 | { |
354 | { |
157 | W w; |
355 | W w_ = (W)w; |
158 | int events; |
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159 | } ANPENDING; |
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160 | |
356 | |
161 | static ANPENDING *pendings; |
357 | if (w_->pending) |
162 | static int pendingmax, pendingcnt; |
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163 | |
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164 | static void |
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165 | event (W w, int events) |
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166 | { |
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167 | if (w->active) |
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168 | { |
358 | { |
169 | w->pending = ++pendingcnt; |
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170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
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171 | pendings [pendingcnt - 1].w = w; |
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172 | pendings [pendingcnt - 1].events = events; |
359 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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360 | return; |
173 | } |
361 | } |
174 | } |
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175 | |
362 | |
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363 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
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364 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
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365 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
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366 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
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367 | } |
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368 | |
176 | static void |
369 | static void |
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370 | queue_events (EV_P_ W *events, int eventcnt, int type) |
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371 | { |
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372 | int i; |
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373 | |
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374 | for (i = 0; i < eventcnt; ++i) |
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375 | ev_feed_event (EV_A_ events [i], type); |
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376 | } |
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377 | |
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378 | inline void |
177 | fd_event (int fd, int events) |
379 | fd_event (EV_P_ int fd, int revents) |
178 | { |
380 | { |
179 | ANFD *anfd = anfds + fd; |
381 | ANFD *anfd = anfds + fd; |
180 | struct ev_io *w; |
382 | struct ev_io *w; |
181 | |
383 | |
182 | for (w = anfd->head; w; w = w->next) |
384 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
183 | { |
385 | { |
184 | int ev = w->events & events; |
386 | int ev = w->events & revents; |
185 | |
387 | |
186 | if (ev) |
388 | if (ev) |
187 | event ((W)w, ev); |
389 | ev_feed_event (EV_A_ (W)w, ev); |
188 | } |
390 | } |
189 | } |
391 | } |
190 | |
392 | |
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393 | void |
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394 | ev_feed_fd_event (EV_P_ int fd, int revents) |
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395 | { |
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396 | fd_event (EV_A_ fd, revents); |
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397 | } |
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398 | |
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399 | /*****************************************************************************/ |
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400 | |
191 | static void |
401 | static void |
192 | queue_events (W *events, int eventcnt, int type) |
402 | fd_reify (EV_P) |
193 | { |
403 | { |
194 | int i; |
404 | int i; |
195 | |
405 | |
196 | for (i = 0; i < eventcnt; ++i) |
406 | for (i = 0; i < fdchangecnt; ++i) |
197 | event (events [i], type); |
407 | { |
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408 | int fd = fdchanges [i]; |
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409 | ANFD *anfd = anfds + fd; |
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410 | struct ev_io *w; |
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411 | |
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412 | int events = 0; |
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413 | |
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414 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
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415 | events |= w->events; |
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416 | |
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417 | #if EV_SELECT_IS_WINSOCKET |
|
|
418 | if (events) |
|
|
419 | { |
|
|
420 | unsigned long argp; |
|
|
421 | anfd->handle = _get_osfhandle (fd); |
|
|
422 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
423 | } |
|
|
424 | #endif |
|
|
425 | |
|
|
426 | anfd->reify = 0; |
|
|
427 | |
|
|
428 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
429 | anfd->events = events; |
|
|
430 | } |
|
|
431 | |
|
|
432 | fdchangecnt = 0; |
|
|
433 | } |
|
|
434 | |
|
|
435 | static void |
|
|
436 | fd_change (EV_P_ int fd) |
|
|
437 | { |
|
|
438 | if (anfds [fd].reify) |
|
|
439 | return; |
|
|
440 | |
|
|
441 | anfds [fd].reify = 1; |
|
|
442 | |
|
|
443 | ++fdchangecnt; |
|
|
444 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
|
|
445 | fdchanges [fdchangecnt - 1] = fd; |
|
|
446 | } |
|
|
447 | |
|
|
448 | static void |
|
|
449 | fd_kill (EV_P_ int fd) |
|
|
450 | { |
|
|
451 | struct ev_io *w; |
|
|
452 | |
|
|
453 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
454 | { |
|
|
455 | ev_io_stop (EV_A_ w); |
|
|
456 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
457 | } |
|
|
458 | } |
|
|
459 | |
|
|
460 | static int |
|
|
461 | fd_valid (int fd) |
|
|
462 | { |
|
|
463 | #ifdef _WIN32 |
|
|
464 | return _get_osfhandle (fd) != -1; |
|
|
465 | #else |
|
|
466 | return fcntl (fd, F_GETFD) != -1; |
|
|
467 | #endif |
198 | } |
468 | } |
199 | |
469 | |
200 | /* called on EBADF to verify fds */ |
470 | /* called on EBADF to verify fds */ |
201 | static void |
471 | static void |
202 | fd_recheck (void) |
472 | fd_ebadf (EV_P) |
203 | { |
473 | { |
204 | int fd; |
474 | int fd; |
205 | |
475 | |
206 | for (fd = 0; fd < anfdmax; ++fd) |
476 | for (fd = 0; fd < anfdmax; ++fd) |
207 | if (anfds [fd].wev) |
477 | if (anfds [fd].events) |
208 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
478 | if (!fd_valid (fd) == -1 && errno == EBADF) |
209 | while (anfds [fd].head) |
479 | fd_kill (EV_A_ fd); |
|
|
480 | } |
|
|
481 | |
|
|
482 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
483 | static void |
|
|
484 | fd_enomem (EV_P) |
|
|
485 | { |
|
|
486 | int fd; |
|
|
487 | |
|
|
488 | for (fd = anfdmax; fd--; ) |
|
|
489 | if (anfds [fd].events) |
210 | { |
490 | { |
211 | event ((W)anfds [fd].head, EV_ERROR); |
491 | fd_kill (EV_A_ fd); |
212 | evio_stop (anfds [fd].head); |
492 | return; |
213 | } |
493 | } |
|
|
494 | } |
|
|
495 | |
|
|
496 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
497 | static void |
|
|
498 | fd_rearm_all (EV_P) |
|
|
499 | { |
|
|
500 | int fd; |
|
|
501 | |
|
|
502 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
503 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
504 | if (anfds [fd].events) |
|
|
505 | { |
|
|
506 | anfds [fd].events = 0; |
|
|
507 | fd_change (EV_A_ fd); |
|
|
508 | } |
214 | } |
509 | } |
215 | |
510 | |
216 | /*****************************************************************************/ |
511 | /*****************************************************************************/ |
217 | |
512 | |
218 | static struct ev_timer **timers; |
|
|
219 | static int timermax, timercnt; |
|
|
220 | |
|
|
221 | static struct ev_periodic **periodics; |
|
|
222 | static int periodicmax, periodiccnt; |
|
|
223 | |
|
|
224 | static void |
513 | static void |
225 | upheap (WT *timers, int k) |
514 | upheap (WT *heap, int k) |
226 | { |
515 | { |
227 | WT w = timers [k]; |
516 | WT w = heap [k]; |
228 | |
517 | |
229 | while (k && timers [k >> 1]->at > w->at) |
518 | while (k && heap [k >> 1]->at > w->at) |
230 | { |
519 | { |
231 | timers [k] = timers [k >> 1]; |
520 | heap [k] = heap [k >> 1]; |
232 | timers [k]->active = k + 1; |
521 | ((W)heap [k])->active = k + 1; |
233 | k >>= 1; |
522 | k >>= 1; |
234 | } |
523 | } |
235 | |
524 | |
236 | timers [k] = w; |
525 | heap [k] = w; |
237 | timers [k]->active = k + 1; |
526 | ((W)heap [k])->active = k + 1; |
238 | |
527 | |
239 | } |
528 | } |
240 | |
529 | |
241 | static void |
530 | static void |
242 | downheap (WT *timers, int N, int k) |
531 | downheap (WT *heap, int N, int k) |
243 | { |
532 | { |
244 | WT w = timers [k]; |
533 | WT w = heap [k]; |
245 | |
534 | |
246 | while (k < (N >> 1)) |
535 | while (k < (N >> 1)) |
247 | { |
536 | { |
248 | int j = k << 1; |
537 | int j = k << 1; |
249 | |
538 | |
250 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
539 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
251 | ++j; |
540 | ++j; |
252 | |
541 | |
253 | if (w->at <= timers [j]->at) |
542 | if (w->at <= heap [j]->at) |
254 | break; |
543 | break; |
255 | |
544 | |
256 | timers [k] = timers [j]; |
545 | heap [k] = heap [j]; |
257 | timers [k]->active = k + 1; |
546 | ((W)heap [k])->active = k + 1; |
258 | k = j; |
547 | k = j; |
259 | } |
548 | } |
260 | |
549 | |
261 | timers [k] = w; |
550 | heap [k] = w; |
262 | timers [k]->active = k + 1; |
551 | ((W)heap [k])->active = k + 1; |
|
|
552 | } |
|
|
553 | |
|
|
554 | inline void |
|
|
555 | adjustheap (WT *heap, int N, int k) |
|
|
556 | { |
|
|
557 | upheap (heap, k); |
|
|
558 | downheap (heap, N, k); |
263 | } |
559 | } |
264 | |
560 | |
265 | /*****************************************************************************/ |
561 | /*****************************************************************************/ |
266 | |
562 | |
267 | typedef struct |
563 | typedef struct |
268 | { |
564 | { |
269 | struct ev_signal *head; |
565 | WL head; |
270 | sig_atomic_t gotsig; |
566 | sig_atomic_t volatile gotsig; |
271 | } ANSIG; |
567 | } ANSIG; |
272 | |
568 | |
273 | static ANSIG *signals; |
569 | static ANSIG *signals; |
274 | static int signalmax; |
570 | static int signalmax; |
275 | |
571 | |
276 | static int sigpipe [2]; |
572 | static int sigpipe [2]; |
277 | static sig_atomic_t gotsig; |
573 | static sig_atomic_t volatile gotsig; |
278 | static struct ev_io sigev; |
574 | static struct ev_io sigev; |
279 | |
575 | |
280 | static void |
576 | static void |
281 | signals_init (ANSIG *base, int count) |
577 | signals_init (ANSIG *base, int count) |
282 | { |
578 | { |
283 | while (count--) |
579 | while (count--) |
284 | { |
580 | { |
285 | base->head = 0; |
581 | base->head = 0; |
286 | base->gotsig = 0; |
582 | base->gotsig = 0; |
|
|
583 | |
287 | ++base; |
584 | ++base; |
288 | } |
585 | } |
289 | } |
586 | } |
290 | |
587 | |
291 | static void |
588 | static void |
292 | sighandler (int signum) |
589 | sighandler (int signum) |
293 | { |
590 | { |
|
|
591 | #if _WIN32 |
|
|
592 | signal (signum, sighandler); |
|
|
593 | #endif |
|
|
594 | |
294 | signals [signum - 1].gotsig = 1; |
595 | signals [signum - 1].gotsig = 1; |
295 | |
596 | |
296 | if (!gotsig) |
597 | if (!gotsig) |
297 | { |
598 | { |
|
|
599 | int old_errno = errno; |
298 | gotsig = 1; |
600 | gotsig = 1; |
299 | write (sigpipe [1], &gotsig, 1); |
601 | write (sigpipe [1], &signum, 1); |
|
|
602 | errno = old_errno; |
300 | } |
603 | } |
301 | } |
604 | } |
302 | |
605 | |
|
|
606 | void |
|
|
607 | ev_feed_signal_event (EV_P_ int signum) |
|
|
608 | { |
|
|
609 | WL w; |
|
|
610 | |
|
|
611 | #if EV_MULTIPLICITY |
|
|
612 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
|
|
613 | #endif |
|
|
614 | |
|
|
615 | --signum; |
|
|
616 | |
|
|
617 | if (signum < 0 || signum >= signalmax) |
|
|
618 | return; |
|
|
619 | |
|
|
620 | signals [signum].gotsig = 0; |
|
|
621 | |
|
|
622 | for (w = signals [signum].head; w; w = w->next) |
|
|
623 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
624 | } |
|
|
625 | |
303 | static void |
626 | static void |
304 | sigcb (struct ev_io *iow, int revents) |
627 | sigcb (EV_P_ struct ev_io *iow, int revents) |
305 | { |
628 | { |
306 | struct ev_signal *w; |
|
|
307 | int sig; |
629 | int signum; |
308 | |
630 | |
|
|
631 | read (sigpipe [0], &revents, 1); |
309 | gotsig = 0; |
632 | gotsig = 0; |
310 | read (sigpipe [0], &revents, 1); |
|
|
311 | |
633 | |
312 | for (sig = signalmax; sig--; ) |
634 | for (signum = signalmax; signum--; ) |
313 | if (signals [sig].gotsig) |
635 | if (signals [signum].gotsig) |
314 | { |
636 | ev_feed_signal_event (EV_A_ signum + 1); |
315 | signals [sig].gotsig = 0; |
|
|
316 | |
|
|
317 | for (w = signals [sig].head; w; w = w->next) |
|
|
318 | event ((W)w, EV_SIGNAL); |
|
|
319 | } |
|
|
320 | } |
637 | } |
321 | |
638 | |
322 | static void |
639 | inline void |
323 | siginit (void) |
640 | fd_intern (int fd) |
324 | { |
641 | { |
|
|
642 | #ifdef _WIN32 |
|
|
643 | int arg = 1; |
|
|
644 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
645 | #else |
325 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
646 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
326 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
327 | |
|
|
328 | /* rather than sort out wether we really need nb, set it */ |
|
|
329 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
647 | fcntl (fd, F_SETFL, O_NONBLOCK); |
330 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
648 | #endif |
|
|
649 | } |
331 | |
650 | |
|
|
651 | static void |
|
|
652 | siginit (EV_P) |
|
|
653 | { |
|
|
654 | fd_intern (sigpipe [0]); |
|
|
655 | fd_intern (sigpipe [1]); |
|
|
656 | |
332 | evio_set (&sigev, sigpipe [0], EV_READ); |
657 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
333 | evio_start (&sigev); |
658 | ev_io_start (EV_A_ &sigev); |
|
|
659 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
334 | } |
660 | } |
335 | |
661 | |
336 | /*****************************************************************************/ |
662 | /*****************************************************************************/ |
337 | |
663 | |
338 | static struct ev_idle **idles; |
|
|
339 | static int idlemax, idlecnt; |
|
|
340 | |
|
|
341 | static struct ev_prepare **prepares; |
|
|
342 | static int preparemax, preparecnt; |
|
|
343 | |
|
|
344 | static struct ev_check **checks; |
|
|
345 | static int checkmax, checkcnt; |
|
|
346 | |
|
|
347 | /*****************************************************************************/ |
|
|
348 | |
|
|
349 | static struct ev_child *childs [PID_HASHSIZE]; |
664 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
665 | |
|
|
666 | #ifndef _WIN32 |
|
|
667 | |
350 | static struct ev_signal childev; |
668 | static struct ev_signal childev; |
351 | |
669 | |
352 | #ifndef WCONTINUED |
670 | #ifndef WCONTINUED |
353 | # define WCONTINUED 0 |
671 | # define WCONTINUED 0 |
354 | #endif |
672 | #endif |
355 | |
673 | |
356 | static void |
674 | static void |
357 | childcb (struct ev_signal *sw, int revents) |
675 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
358 | { |
676 | { |
359 | struct ev_child *w; |
677 | struct ev_child *w; |
|
|
678 | |
|
|
679 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
680 | if (w->pid == pid || !w->pid) |
|
|
681 | { |
|
|
682 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
683 | w->rpid = pid; |
|
|
684 | w->rstatus = status; |
|
|
685 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
686 | } |
|
|
687 | } |
|
|
688 | |
|
|
689 | static void |
|
|
690 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
691 | { |
360 | int pid, status; |
692 | int pid, status; |
361 | |
693 | |
362 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
694 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
363 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
695 | { |
364 | if (w->pid == pid || w->pid == -1) |
696 | /* make sure we are called again until all childs have been reaped */ |
365 | { |
697 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
366 | w->status = status; |
698 | |
367 | event ((W)w, EV_CHILD); |
699 | child_reap (EV_A_ sw, pid, pid, status); |
368 | } |
700 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
701 | } |
369 | } |
702 | } |
|
|
703 | |
|
|
704 | #endif |
370 | |
705 | |
371 | /*****************************************************************************/ |
706 | /*****************************************************************************/ |
372 | |
707 | |
|
|
708 | #if EV_USE_KQUEUE |
|
|
709 | # include "ev_kqueue.c" |
|
|
710 | #endif |
373 | #if HAVE_EPOLL |
711 | #if EV_USE_EPOLL |
374 | # include "ev_epoll.c" |
712 | # include "ev_epoll.c" |
375 | #endif |
713 | #endif |
|
|
714 | #if EV_USE_POLL |
|
|
715 | # include "ev_poll.c" |
|
|
716 | #endif |
376 | #if HAVE_SELECT |
717 | #if EV_USE_SELECT |
377 | # include "ev_select.c" |
718 | # include "ev_select.c" |
378 | #endif |
719 | #endif |
379 | |
720 | |
380 | int |
721 | int |
381 | ev_version_major (void) |
722 | ev_version_major (void) |
… | |
… | |
387 | ev_version_minor (void) |
728 | ev_version_minor (void) |
388 | { |
729 | { |
389 | return EV_VERSION_MINOR; |
730 | return EV_VERSION_MINOR; |
390 | } |
731 | } |
391 | |
732 | |
392 | int ev_init (int flags) |
733 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
734 | static int |
|
|
735 | enable_secure (void) |
393 | { |
736 | { |
|
|
737 | #ifdef _WIN32 |
|
|
738 | return 0; |
|
|
739 | #else |
|
|
740 | return getuid () != geteuid () |
|
|
741 | || getgid () != getegid (); |
|
|
742 | #endif |
|
|
743 | } |
|
|
744 | |
|
|
745 | int |
|
|
746 | ev_method (EV_P) |
|
|
747 | { |
|
|
748 | return method; |
|
|
749 | } |
|
|
750 | |
|
|
751 | static void |
|
|
752 | loop_init (EV_P_ int methods) |
|
|
753 | { |
394 | if (!ev_method) |
754 | if (!method) |
395 | { |
755 | { |
396 | #if HAVE_MONOTONIC |
756 | #if EV_USE_MONOTONIC |
397 | { |
757 | { |
398 | struct timespec ts; |
758 | struct timespec ts; |
399 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
759 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
400 | have_monotonic = 1; |
760 | have_monotonic = 1; |
401 | } |
761 | } |
402 | #endif |
762 | #endif |
403 | |
763 | |
404 | ev_now = ev_time (); |
764 | ev_rt_now = ev_time (); |
405 | now = get_clock (); |
765 | mn_now = get_clock (); |
|
|
766 | now_floor = mn_now; |
406 | diff = ev_now - now; |
767 | rtmn_diff = ev_rt_now - mn_now; |
407 | |
768 | |
|
|
769 | if (methods == EVMETHOD_AUTO) |
|
|
770 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
|
|
771 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
772 | else |
|
|
773 | methods = EVMETHOD_ANY; |
|
|
774 | |
|
|
775 | method = 0; |
|
|
776 | #if EV_USE_KQUEUE |
|
|
777 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
778 | #endif |
|
|
779 | #if EV_USE_EPOLL |
|
|
780 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
781 | #endif |
|
|
782 | #if EV_USE_POLL |
|
|
783 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
|
|
784 | #endif |
|
|
785 | #if EV_USE_SELECT |
|
|
786 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
|
|
787 | #endif |
|
|
788 | |
|
|
789 | ev_init (&sigev, sigcb); |
|
|
790 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
791 | } |
|
|
792 | } |
|
|
793 | |
|
|
794 | void |
|
|
795 | loop_destroy (EV_P) |
|
|
796 | { |
|
|
797 | int i; |
|
|
798 | |
|
|
799 | #if EV_USE_KQUEUE |
|
|
800 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
801 | #endif |
|
|
802 | #if EV_USE_EPOLL |
|
|
803 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
804 | #endif |
|
|
805 | #if EV_USE_POLL |
|
|
806 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
807 | #endif |
|
|
808 | #if EV_USE_SELECT |
|
|
809 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
810 | #endif |
|
|
811 | |
|
|
812 | for (i = NUMPRI; i--; ) |
|
|
813 | array_free (pending, [i]); |
|
|
814 | |
|
|
815 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
816 | array_free (fdchange, EMPTY); |
|
|
817 | array_free (timer, EMPTY); |
|
|
818 | #if EV_PERIODICS |
|
|
819 | array_free (periodic, EMPTY); |
|
|
820 | #endif |
|
|
821 | array_free (idle, EMPTY); |
|
|
822 | array_free (prepare, EMPTY); |
|
|
823 | array_free (check, EMPTY); |
|
|
824 | |
|
|
825 | method = 0; |
|
|
826 | } |
|
|
827 | |
|
|
828 | static void |
|
|
829 | loop_fork (EV_P) |
|
|
830 | { |
|
|
831 | #if EV_USE_EPOLL |
|
|
832 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
833 | #endif |
|
|
834 | #if EV_USE_KQUEUE |
|
|
835 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
836 | #endif |
|
|
837 | |
|
|
838 | if (ev_is_active (&sigev)) |
|
|
839 | { |
|
|
840 | /* default loop */ |
|
|
841 | |
|
|
842 | ev_ref (EV_A); |
|
|
843 | ev_io_stop (EV_A_ &sigev); |
|
|
844 | close (sigpipe [0]); |
|
|
845 | close (sigpipe [1]); |
|
|
846 | |
|
|
847 | while (pipe (sigpipe)) |
|
|
848 | syserr ("(libev) error creating pipe"); |
|
|
849 | |
|
|
850 | siginit (EV_A); |
|
|
851 | } |
|
|
852 | |
|
|
853 | postfork = 0; |
|
|
854 | } |
|
|
855 | |
|
|
856 | #if EV_MULTIPLICITY |
|
|
857 | struct ev_loop * |
|
|
858 | ev_loop_new (int methods) |
|
|
859 | { |
|
|
860 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
861 | |
|
|
862 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
863 | |
|
|
864 | loop_init (EV_A_ methods); |
|
|
865 | |
|
|
866 | if (ev_method (EV_A)) |
|
|
867 | return loop; |
|
|
868 | |
|
|
869 | return 0; |
|
|
870 | } |
|
|
871 | |
|
|
872 | void |
|
|
873 | ev_loop_destroy (EV_P) |
|
|
874 | { |
|
|
875 | loop_destroy (EV_A); |
|
|
876 | ev_free (loop); |
|
|
877 | } |
|
|
878 | |
|
|
879 | void |
|
|
880 | ev_loop_fork (EV_P) |
|
|
881 | { |
|
|
882 | postfork = 1; |
|
|
883 | } |
|
|
884 | |
|
|
885 | #endif |
|
|
886 | |
|
|
887 | #if EV_MULTIPLICITY |
|
|
888 | struct ev_loop * |
|
|
889 | #else |
|
|
890 | int |
|
|
891 | #endif |
|
|
892 | ev_default_loop (int methods) |
|
|
893 | { |
|
|
894 | if (sigpipe [0] == sigpipe [1]) |
408 | if (pipe (sigpipe)) |
895 | if (pipe (sigpipe)) |
409 | return 0; |
896 | return 0; |
410 | |
897 | |
411 | ev_method = EVMETHOD_NONE; |
898 | if (!default_loop) |
412 | #if HAVE_EPOLL |
899 | { |
413 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
900 | #if EV_MULTIPLICITY |
|
|
901 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
902 | #else |
|
|
903 | default_loop = 1; |
414 | #endif |
904 | #endif |
415 | #if HAVE_SELECT |
|
|
416 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
417 | #endif |
|
|
418 | |
905 | |
|
|
906 | loop_init (EV_A_ methods); |
|
|
907 | |
419 | if (ev_method) |
908 | if (ev_method (EV_A)) |
420 | { |
909 | { |
421 | evw_init (&sigev, sigcb); |
|
|
422 | siginit (); |
910 | siginit (EV_A); |
423 | |
911 | |
|
|
912 | #ifndef _WIN32 |
424 | evsignal_init (&childev, childcb, SIGCHLD); |
913 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
914 | ev_set_priority (&childev, EV_MAXPRI); |
425 | evsignal_start (&childev); |
915 | ev_signal_start (EV_A_ &childev); |
|
|
916 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
917 | #endif |
426 | } |
918 | } |
|
|
919 | else |
|
|
920 | default_loop = 0; |
427 | } |
921 | } |
428 | |
922 | |
429 | return ev_method; |
923 | return default_loop; |
|
|
924 | } |
|
|
925 | |
|
|
926 | void |
|
|
927 | ev_default_destroy (void) |
|
|
928 | { |
|
|
929 | #if EV_MULTIPLICITY |
|
|
930 | struct ev_loop *loop = default_loop; |
|
|
931 | #endif |
|
|
932 | |
|
|
933 | #ifndef _WIN32 |
|
|
934 | ev_ref (EV_A); /* child watcher */ |
|
|
935 | ev_signal_stop (EV_A_ &childev); |
|
|
936 | #endif |
|
|
937 | |
|
|
938 | ev_ref (EV_A); /* signal watcher */ |
|
|
939 | ev_io_stop (EV_A_ &sigev); |
|
|
940 | |
|
|
941 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
942 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
943 | |
|
|
944 | loop_destroy (EV_A); |
|
|
945 | } |
|
|
946 | |
|
|
947 | void |
|
|
948 | ev_default_fork (void) |
|
|
949 | { |
|
|
950 | #if EV_MULTIPLICITY |
|
|
951 | struct ev_loop *loop = default_loop; |
|
|
952 | #endif |
|
|
953 | |
|
|
954 | if (method) |
|
|
955 | postfork = 1; |
430 | } |
956 | } |
431 | |
957 | |
432 | /*****************************************************************************/ |
958 | /*****************************************************************************/ |
433 | |
959 | |
434 | void |
|
|
435 | ev_prefork (void) |
|
|
436 | { |
|
|
437 | /* nop */ |
|
|
438 | } |
|
|
439 | |
|
|
440 | void |
|
|
441 | ev_postfork_parent (void) |
|
|
442 | { |
|
|
443 | /* nop */ |
|
|
444 | } |
|
|
445 | |
|
|
446 | void |
|
|
447 | ev_postfork_child (void) |
|
|
448 | { |
|
|
449 | #if HAVE_EPOLL |
|
|
450 | if (ev_method == EVMETHOD_EPOLL) |
|
|
451 | epoll_postfork_child (); |
|
|
452 | #endif |
|
|
453 | |
|
|
454 | evio_stop (&sigev); |
|
|
455 | close (sigpipe [0]); |
|
|
456 | close (sigpipe [1]); |
|
|
457 | pipe (sigpipe); |
|
|
458 | siginit (); |
|
|
459 | } |
|
|
460 | |
|
|
461 | /*****************************************************************************/ |
|
|
462 | |
|
|
463 | static void |
960 | static int |
464 | fd_reify (void) |
961 | any_pending (EV_P) |
465 | { |
962 | { |
466 | int i; |
963 | int pri; |
467 | |
964 | |
468 | for (i = 0; i < fdchangecnt; ++i) |
965 | for (pri = NUMPRI; pri--; ) |
469 | { |
966 | if (pendingcnt [pri]) |
470 | int fd = fdchanges [i]; |
967 | return 1; |
471 | ANFD *anfd = anfds + fd; |
|
|
472 | struct ev_io *w; |
|
|
473 | |
968 | |
474 | int wev = 0; |
969 | return 0; |
|
|
970 | } |
475 | |
971 | |
476 | for (w = anfd->head; w; w = w->next) |
972 | static void |
477 | wev |= w->events; |
973 | call_pending (EV_P) |
|
|
974 | { |
|
|
975 | int pri; |
478 | |
976 | |
479 | if (anfd->wev != wev) |
977 | for (pri = NUMPRI; pri--; ) |
|
|
978 | while (pendingcnt [pri]) |
480 | { |
979 | { |
481 | method_modify (fd, anfd->wev, wev); |
|
|
482 | anfd->wev = wev; |
|
|
483 | } |
|
|
484 | } |
|
|
485 | |
|
|
486 | fdchangecnt = 0; |
|
|
487 | } |
|
|
488 | |
|
|
489 | static void |
|
|
490 | call_pending (void) |
|
|
491 | { |
|
|
492 | while (pendingcnt) |
|
|
493 | { |
|
|
494 | ANPENDING *p = pendings + --pendingcnt; |
980 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
495 | |
981 | |
496 | if (p->w) |
982 | if (p->w) |
497 | { |
983 | { |
498 | p->w->pending = 0; |
984 | p->w->pending = 0; |
499 | p->w->cb (p->w, p->events); |
985 | EV_CB_INVOKE (p->w, p->events); |
500 | } |
986 | } |
501 | } |
987 | } |
502 | } |
988 | } |
503 | |
989 | |
504 | static void |
990 | static void |
505 | timers_reify (void) |
991 | timers_reify (EV_P) |
506 | { |
992 | { |
507 | while (timercnt && timers [0]->at <= now) |
993 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
508 | { |
994 | { |
509 | struct ev_timer *w = timers [0]; |
995 | struct ev_timer *w = timers [0]; |
510 | |
996 | |
511 | event ((W)w, EV_TIMEOUT); |
997 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
512 | |
998 | |
513 | /* first reschedule or stop timer */ |
999 | /* first reschedule or stop timer */ |
514 | if (w->repeat) |
1000 | if (w->repeat) |
515 | { |
1001 | { |
|
|
1002 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
1003 | |
516 | w->at = now + w->repeat; |
1004 | ((WT)w)->at += w->repeat; |
517 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1005 | if (((WT)w)->at < mn_now) |
|
|
1006 | ((WT)w)->at = mn_now; |
|
|
1007 | |
518 | downheap ((WT *)timers, timercnt, 0); |
1008 | downheap ((WT *)timers, timercnt, 0); |
519 | } |
1009 | } |
520 | else |
1010 | else |
521 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1011 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
522 | } |
|
|
523 | } |
|
|
524 | |
1012 | |
|
|
1013 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1014 | } |
|
|
1015 | } |
|
|
1016 | |
|
|
1017 | #if EV_PERIODICS |
525 | static void |
1018 | static void |
526 | periodics_reify (void) |
1019 | periodics_reify (EV_P) |
527 | { |
1020 | { |
528 | while (periodiccnt && periodics [0]->at <= ev_now) |
1021 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
529 | { |
1022 | { |
530 | struct ev_periodic *w = periodics [0]; |
1023 | struct ev_periodic *w = periodics [0]; |
531 | |
1024 | |
|
|
1025 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1026 | |
532 | /* first reschedule or stop timer */ |
1027 | /* first reschedule or stop timer */ |
533 | if (w->interval) |
1028 | if (w->reschedule_cb) |
534 | { |
1029 | { |
|
|
1030 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1031 | |
|
|
1032 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1033 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1034 | } |
|
|
1035 | else if (w->interval) |
|
|
1036 | { |
535 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1037 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
536 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1038 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
537 | downheap ((WT *)periodics, periodiccnt, 0); |
1039 | downheap ((WT *)periodics, periodiccnt, 0); |
538 | } |
1040 | } |
539 | else |
1041 | else |
540 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
1042 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
541 | |
1043 | |
542 | event ((W)w, EV_TIMEOUT); |
1044 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
543 | } |
1045 | } |
544 | } |
1046 | } |
545 | |
1047 | |
546 | static void |
1048 | static void |
547 | periodics_reschedule (ev_tstamp diff) |
1049 | periodics_reschedule (EV_P) |
548 | { |
1050 | { |
549 | int i; |
1051 | int i; |
550 | |
1052 | |
551 | /* adjust periodics after time jump */ |
1053 | /* adjust periodics after time jump */ |
552 | for (i = 0; i < periodiccnt; ++i) |
1054 | for (i = 0; i < periodiccnt; ++i) |
553 | { |
1055 | { |
554 | struct ev_periodic *w = periodics [i]; |
1056 | struct ev_periodic *w = periodics [i]; |
555 | |
1057 | |
|
|
1058 | if (w->reschedule_cb) |
|
|
1059 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
556 | if (w->interval) |
1060 | else if (w->interval) |
|
|
1061 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | /* now rebuild the heap */ |
|
|
1065 | for (i = periodiccnt >> 1; i--; ) |
|
|
1066 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1067 | } |
|
|
1068 | #endif |
|
|
1069 | |
|
|
1070 | inline int |
|
|
1071 | time_update_monotonic (EV_P) |
|
|
1072 | { |
|
|
1073 | mn_now = get_clock (); |
|
|
1074 | |
|
|
1075 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1076 | { |
|
|
1077 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1078 | return 0; |
|
|
1079 | } |
|
|
1080 | else |
|
|
1081 | { |
|
|
1082 | now_floor = mn_now; |
|
|
1083 | ev_rt_now = ev_time (); |
|
|
1084 | return 1; |
|
|
1085 | } |
|
|
1086 | } |
|
|
1087 | |
|
|
1088 | static void |
|
|
1089 | time_update (EV_P) |
|
|
1090 | { |
|
|
1091 | int i; |
|
|
1092 | |
|
|
1093 | #if EV_USE_MONOTONIC |
|
|
1094 | if (expect_true (have_monotonic)) |
|
|
1095 | { |
|
|
1096 | if (time_update_monotonic (EV_A)) |
557 | { |
1097 | { |
558 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1098 | ev_tstamp odiff = rtmn_diff; |
559 | |
1099 | |
560 | if (fabs (diff) >= 1e-4) |
1100 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
561 | { |
1101 | { |
562 | evperiodic_stop (w); |
1102 | rtmn_diff = ev_rt_now - mn_now; |
563 | evperiodic_start (w); |
|
|
564 | |
1103 | |
565 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1104 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1105 | return; /* all is well */ |
|
|
1106 | |
|
|
1107 | ev_rt_now = ev_time (); |
|
|
1108 | mn_now = get_clock (); |
|
|
1109 | now_floor = mn_now; |
566 | } |
1110 | } |
|
|
1111 | |
|
|
1112 | # if EV_PERIODICS |
|
|
1113 | periodics_reschedule (EV_A); |
|
|
1114 | # endif |
|
|
1115 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1116 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
567 | } |
1117 | } |
568 | } |
1118 | } |
569 | } |
1119 | else |
570 | |
1120 | #endif |
571 | static void |
1121 | { |
572 | time_update (void) |
|
|
573 | { |
|
|
574 | int i; |
|
|
575 | |
|
|
576 | ev_now = ev_time (); |
1122 | ev_rt_now = ev_time (); |
577 | |
1123 | |
578 | if (have_monotonic) |
1124 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
579 | { |
|
|
580 | ev_tstamp odiff = diff; |
|
|
581 | |
|
|
582 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
583 | { |
1125 | { |
584 | now = get_clock (); |
1126 | #if EV_PERIODICS |
585 | diff = ev_now - now; |
|
|
586 | |
|
|
587 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
588 | return; /* all is well */ |
|
|
589 | |
|
|
590 | ev_now = ev_time (); |
|
|
591 | } |
|
|
592 | |
|
|
593 | periodics_reschedule (diff - odiff); |
|
|
594 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
595 | } |
|
|
596 | else |
|
|
597 | { |
|
|
598 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
599 | { |
|
|
600 | periodics_reschedule (ev_now - now); |
1127 | periodics_reschedule (EV_A); |
|
|
1128 | #endif |
601 | |
1129 | |
602 | /* adjust timers. this is easy, as the offset is the same for all */ |
1130 | /* adjust timers. this is easy, as the offset is the same for all */ |
603 | for (i = 0; i < timercnt; ++i) |
1131 | for (i = 0; i < timercnt; ++i) |
604 | timers [i]->at += diff; |
1132 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
605 | } |
1133 | } |
606 | |
1134 | |
607 | now = ev_now; |
1135 | mn_now = ev_rt_now; |
608 | } |
1136 | } |
609 | } |
1137 | } |
610 | |
1138 | |
611 | int ev_loop_done; |
1139 | void |
|
|
1140 | ev_ref (EV_P) |
|
|
1141 | { |
|
|
1142 | ++activecnt; |
|
|
1143 | } |
612 | |
1144 | |
|
|
1145 | void |
|
|
1146 | ev_unref (EV_P) |
|
|
1147 | { |
|
|
1148 | --activecnt; |
|
|
1149 | } |
|
|
1150 | |
|
|
1151 | static int loop_done; |
|
|
1152 | |
|
|
1153 | void |
613 | void ev_loop (int flags) |
1154 | ev_loop (EV_P_ int flags) |
614 | { |
1155 | { |
615 | double block; |
1156 | double block; |
616 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
1157 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
617 | |
1158 | |
618 | do |
1159 | do |
619 | { |
1160 | { |
620 | /* queue check watchers (and execute them) */ |
1161 | /* queue check watchers (and execute them) */ |
621 | if (preparecnt) |
1162 | if (expect_false (preparecnt)) |
622 | { |
1163 | { |
623 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1164 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
624 | call_pending (); |
1165 | call_pending (EV_A); |
625 | } |
1166 | } |
626 | |
1167 | |
|
|
1168 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1169 | if (expect_false (postfork)) |
|
|
1170 | loop_fork (EV_A); |
|
|
1171 | |
627 | /* update fd-related kernel structures */ |
1172 | /* update fd-related kernel structures */ |
628 | fd_reify (); |
1173 | fd_reify (EV_A); |
629 | |
1174 | |
630 | /* calculate blocking time */ |
1175 | /* calculate blocking time */ |
631 | |
1176 | |
632 | /* we only need this for !monotonic clockor timers, but as we basically |
1177 | /* we only need this for !monotonic clock or timers, but as we basically |
633 | always have timers, we just calculate it always */ |
1178 | always have timers, we just calculate it always */ |
|
|
1179 | #if EV_USE_MONOTONIC |
|
|
1180 | if (expect_true (have_monotonic)) |
|
|
1181 | time_update_monotonic (EV_A); |
|
|
1182 | else |
|
|
1183 | #endif |
|
|
1184 | { |
634 | ev_now = ev_time (); |
1185 | ev_rt_now = ev_time (); |
|
|
1186 | mn_now = ev_rt_now; |
|
|
1187 | } |
635 | |
1188 | |
636 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1189 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
637 | block = 0.; |
1190 | block = 0.; |
638 | else |
1191 | else |
639 | { |
1192 | { |
640 | block = MAX_BLOCKTIME; |
1193 | block = MAX_BLOCKTIME; |
641 | |
1194 | |
642 | if (timercnt) |
1195 | if (timercnt) |
643 | { |
1196 | { |
644 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1197 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
645 | if (block > to) block = to; |
1198 | if (block > to) block = to; |
646 | } |
1199 | } |
647 | |
1200 | |
|
|
1201 | #if EV_PERIODICS |
648 | if (periodiccnt) |
1202 | if (periodiccnt) |
649 | { |
1203 | { |
650 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1204 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
651 | if (block > to) block = to; |
1205 | if (block > to) block = to; |
652 | } |
1206 | } |
|
|
1207 | #endif |
653 | |
1208 | |
654 | if (block < 0.) block = 0.; |
1209 | if (block < 0.) block = 0.; |
655 | } |
1210 | } |
656 | |
1211 | |
657 | method_poll (block); |
1212 | method_poll (EV_A_ block); |
658 | |
1213 | |
659 | /* update ev_now, do magic */ |
1214 | /* update ev_rt_now, do magic */ |
660 | time_update (); |
1215 | time_update (EV_A); |
661 | |
1216 | |
662 | /* queue pending timers and reschedule them */ |
1217 | /* queue pending timers and reschedule them */ |
663 | timers_reify (); /* relative timers called last */ |
1218 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1219 | #if EV_PERIODICS |
664 | periodics_reify (); /* absolute timers called first */ |
1220 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1221 | #endif |
665 | |
1222 | |
666 | /* queue idle watchers unless io or timers are pending */ |
1223 | /* queue idle watchers unless io or timers are pending */ |
667 | if (!pendingcnt) |
1224 | if (idlecnt && !any_pending (EV_A)) |
668 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1225 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
669 | |
1226 | |
670 | /* queue check watchers, to be executed first */ |
1227 | /* queue check watchers, to be executed first */ |
671 | if (checkcnt) |
1228 | if (checkcnt) |
672 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1229 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
673 | |
1230 | |
674 | call_pending (); |
1231 | call_pending (EV_A); |
675 | } |
1232 | } |
676 | while (!ev_loop_done); |
1233 | while (activecnt && !loop_done); |
677 | |
1234 | |
678 | if (ev_loop_done != 2) |
1235 | if (loop_done != 2) |
679 | ev_loop_done = 0; |
1236 | loop_done = 0; |
|
|
1237 | } |
|
|
1238 | |
|
|
1239 | void |
|
|
1240 | ev_unloop (EV_P_ int how) |
|
|
1241 | { |
|
|
1242 | loop_done = how; |
680 | } |
1243 | } |
681 | |
1244 | |
682 | /*****************************************************************************/ |
1245 | /*****************************************************************************/ |
683 | |
1246 | |
684 | static void |
1247 | inline void |
685 | wlist_add (WL *head, WL elem) |
1248 | wlist_add (WL *head, WL elem) |
686 | { |
1249 | { |
687 | elem->next = *head; |
1250 | elem->next = *head; |
688 | *head = elem; |
1251 | *head = elem; |
689 | } |
1252 | } |
690 | |
1253 | |
691 | static void |
1254 | inline void |
692 | wlist_del (WL *head, WL elem) |
1255 | wlist_del (WL *head, WL elem) |
693 | { |
1256 | { |
694 | while (*head) |
1257 | while (*head) |
695 | { |
1258 | { |
696 | if (*head == elem) |
1259 | if (*head == elem) |
… | |
… | |
701 | |
1264 | |
702 | head = &(*head)->next; |
1265 | head = &(*head)->next; |
703 | } |
1266 | } |
704 | } |
1267 | } |
705 | |
1268 | |
706 | static void |
1269 | inline void |
707 | ev_clear (W w) |
1270 | ev_clear_pending (EV_P_ W w) |
708 | { |
1271 | { |
709 | if (w->pending) |
1272 | if (w->pending) |
710 | { |
1273 | { |
711 | pendings [w->pending - 1].w = 0; |
1274 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
712 | w->pending = 0; |
1275 | w->pending = 0; |
713 | } |
1276 | } |
714 | } |
1277 | } |
715 | |
1278 | |
716 | static void |
1279 | inline void |
717 | ev_start (W w, int active) |
1280 | ev_start (EV_P_ W w, int active) |
718 | { |
1281 | { |
|
|
1282 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1283 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1284 | |
719 | w->active = active; |
1285 | w->active = active; |
|
|
1286 | ev_ref (EV_A); |
720 | } |
1287 | } |
721 | |
1288 | |
722 | static void |
1289 | inline void |
723 | ev_stop (W w) |
1290 | ev_stop (EV_P_ W w) |
724 | { |
1291 | { |
|
|
1292 | ev_unref (EV_A); |
725 | w->active = 0; |
1293 | w->active = 0; |
726 | } |
1294 | } |
727 | |
1295 | |
728 | /*****************************************************************************/ |
1296 | /*****************************************************************************/ |
729 | |
1297 | |
730 | void |
1298 | void |
731 | evio_start (struct ev_io *w) |
1299 | ev_io_start (EV_P_ struct ev_io *w) |
732 | { |
1300 | { |
|
|
1301 | int fd = w->fd; |
|
|
1302 | |
733 | if (ev_is_active (w)) |
1303 | if (ev_is_active (w)) |
734 | return; |
1304 | return; |
735 | |
1305 | |
736 | int fd = w->fd; |
1306 | assert (("ev_io_start called with negative fd", fd >= 0)); |
737 | |
1307 | |
738 | ev_start ((W)w, 1); |
1308 | ev_start (EV_A_ (W)w, 1); |
739 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1309 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
740 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1310 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
741 | |
1311 | |
742 | ++fdchangecnt; |
1312 | fd_change (EV_A_ fd); |
743 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
744 | fdchanges [fdchangecnt - 1] = fd; |
|
|
745 | |
|
|
746 | if (w->fd == 9) |
|
|
747 | printf ("start %p:%x\n", w, w->events);//D |
|
|
748 | } |
1313 | } |
749 | |
1314 | |
750 | void |
1315 | void |
751 | evio_stop (struct ev_io *w) |
1316 | ev_io_stop (EV_P_ struct ev_io *w) |
752 | { |
1317 | { |
753 | if (w->fd == 9) |
1318 | ev_clear_pending (EV_A_ (W)w); |
754 | printf ("stop %p:%x\n", w, w->events);//D |
|
|
755 | ev_clear ((W)w); |
|
|
756 | if (!ev_is_active (w)) |
1319 | if (!ev_is_active (w)) |
757 | return; |
1320 | return; |
758 | |
1321 | |
|
|
1322 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1323 | |
759 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1324 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
760 | ev_stop ((W)w); |
1325 | ev_stop (EV_A_ (W)w); |
761 | |
1326 | |
762 | ++fdchangecnt; |
1327 | fd_change (EV_A_ w->fd); |
763 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
764 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
765 | } |
1328 | } |
766 | |
1329 | |
767 | void |
1330 | void |
768 | evtimer_start (struct ev_timer *w) |
1331 | ev_timer_start (EV_P_ struct ev_timer *w) |
769 | { |
1332 | { |
770 | if (ev_is_active (w)) |
1333 | if (ev_is_active (w)) |
771 | return; |
1334 | return; |
772 | |
1335 | |
773 | w->at += now; |
1336 | ((WT)w)->at += mn_now; |
774 | |
1337 | |
775 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1338 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
776 | |
1339 | |
777 | ev_start ((W)w, ++timercnt); |
1340 | ev_start (EV_A_ (W)w, ++timercnt); |
778 | array_needsize (timers, timermax, timercnt, ); |
1341 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
779 | timers [timercnt - 1] = w; |
1342 | timers [timercnt - 1] = w; |
780 | upheap ((WT *)timers, timercnt - 1); |
1343 | upheap ((WT *)timers, timercnt - 1); |
781 | } |
|
|
782 | |
1344 | |
|
|
1345 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1346 | } |
|
|
1347 | |
783 | void |
1348 | void |
784 | evtimer_stop (struct ev_timer *w) |
1349 | ev_timer_stop (EV_P_ struct ev_timer *w) |
785 | { |
1350 | { |
786 | ev_clear ((W)w); |
1351 | ev_clear_pending (EV_A_ (W)w); |
787 | if (!ev_is_active (w)) |
1352 | if (!ev_is_active (w)) |
788 | return; |
1353 | return; |
789 | |
1354 | |
|
|
1355 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1356 | |
790 | if (w->active < timercnt--) |
1357 | if (((W)w)->active < timercnt--) |
791 | { |
1358 | { |
792 | timers [w->active - 1] = timers [timercnt]; |
1359 | timers [((W)w)->active - 1] = timers [timercnt]; |
793 | downheap ((WT *)timers, timercnt, w->active - 1); |
1360 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
794 | } |
1361 | } |
795 | |
1362 | |
796 | w->at = w->repeat; |
1363 | ((WT)w)->at -= mn_now; |
797 | |
1364 | |
798 | ev_stop ((W)w); |
1365 | ev_stop (EV_A_ (W)w); |
799 | } |
1366 | } |
800 | |
1367 | |
801 | void |
1368 | void |
802 | evtimer_again (struct ev_timer *w) |
1369 | ev_timer_again (EV_P_ struct ev_timer *w) |
803 | { |
1370 | { |
804 | if (ev_is_active (w)) |
1371 | if (ev_is_active (w)) |
805 | { |
1372 | { |
806 | if (w->repeat) |
1373 | if (w->repeat) |
807 | { |
1374 | { |
808 | w->at = now + w->repeat; |
1375 | ((WT)w)->at = mn_now + w->repeat; |
809 | downheap ((WT *)timers, timercnt, w->active - 1); |
1376 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
810 | } |
1377 | } |
811 | else |
1378 | else |
812 | evtimer_stop (w); |
1379 | ev_timer_stop (EV_A_ w); |
813 | } |
1380 | } |
814 | else if (w->repeat) |
1381 | else if (w->repeat) |
815 | evtimer_start (w); |
1382 | ev_timer_start (EV_A_ w); |
816 | } |
1383 | } |
817 | |
1384 | |
|
|
1385 | #if EV_PERIODICS |
818 | void |
1386 | void |
819 | evperiodic_start (struct ev_periodic *w) |
1387 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
820 | { |
1388 | { |
821 | if (ev_is_active (w)) |
1389 | if (ev_is_active (w)) |
822 | return; |
1390 | return; |
823 | |
1391 | |
824 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1392 | if (w->reschedule_cb) |
825 | |
1393 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1394 | else if (w->interval) |
|
|
1395 | { |
|
|
1396 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
826 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1397 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
827 | if (w->interval) |
|
|
828 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1398 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1399 | } |
829 | |
1400 | |
830 | ev_start ((W)w, ++periodiccnt); |
1401 | ev_start (EV_A_ (W)w, ++periodiccnt); |
831 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1402 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
832 | periodics [periodiccnt - 1] = w; |
1403 | periodics [periodiccnt - 1] = w; |
833 | upheap ((WT *)periodics, periodiccnt - 1); |
1404 | upheap ((WT *)periodics, periodiccnt - 1); |
834 | } |
|
|
835 | |
1405 | |
|
|
1406 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1407 | } |
|
|
1408 | |
836 | void |
1409 | void |
837 | evperiodic_stop (struct ev_periodic *w) |
1410 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
838 | { |
1411 | { |
839 | ev_clear ((W)w); |
1412 | ev_clear_pending (EV_A_ (W)w); |
840 | if (!ev_is_active (w)) |
1413 | if (!ev_is_active (w)) |
841 | return; |
1414 | return; |
842 | |
1415 | |
|
|
1416 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1417 | |
843 | if (w->active < periodiccnt--) |
1418 | if (((W)w)->active < periodiccnt--) |
844 | { |
1419 | { |
845 | periodics [w->active - 1] = periodics [periodiccnt]; |
1420 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
846 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1421 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
847 | } |
1422 | } |
848 | |
1423 | |
849 | ev_stop ((W)w); |
1424 | ev_stop (EV_A_ (W)w); |
850 | } |
1425 | } |
851 | |
1426 | |
852 | void |
1427 | void |
853 | evsignal_start (struct ev_signal *w) |
1428 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1429 | { |
|
|
1430 | /* TODO: use adjustheap and recalculation */ |
|
|
1431 | ev_periodic_stop (EV_A_ w); |
|
|
1432 | ev_periodic_start (EV_A_ w); |
|
|
1433 | } |
|
|
1434 | #endif |
|
|
1435 | |
|
|
1436 | void |
|
|
1437 | ev_idle_start (EV_P_ struct ev_idle *w) |
854 | { |
1438 | { |
855 | if (ev_is_active (w)) |
1439 | if (ev_is_active (w)) |
856 | return; |
1440 | return; |
857 | |
1441 | |
|
|
1442 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1443 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1444 | idles [idlecnt - 1] = w; |
|
|
1445 | } |
|
|
1446 | |
|
|
1447 | void |
|
|
1448 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1449 | { |
|
|
1450 | ev_clear_pending (EV_A_ (W)w); |
|
|
1451 | if (!ev_is_active (w)) |
|
|
1452 | return; |
|
|
1453 | |
|
|
1454 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1455 | ev_stop (EV_A_ (W)w); |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | void |
|
|
1459 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1460 | { |
|
|
1461 | if (ev_is_active (w)) |
|
|
1462 | return; |
|
|
1463 | |
|
|
1464 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1465 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1466 | prepares [preparecnt - 1] = w; |
|
|
1467 | } |
|
|
1468 | |
|
|
1469 | void |
|
|
1470 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1471 | { |
|
|
1472 | ev_clear_pending (EV_A_ (W)w); |
|
|
1473 | if (!ev_is_active (w)) |
|
|
1474 | return; |
|
|
1475 | |
|
|
1476 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1477 | ev_stop (EV_A_ (W)w); |
|
|
1478 | } |
|
|
1479 | |
|
|
1480 | void |
|
|
1481 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1482 | { |
|
|
1483 | if (ev_is_active (w)) |
|
|
1484 | return; |
|
|
1485 | |
|
|
1486 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1487 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1488 | checks [checkcnt - 1] = w; |
|
|
1489 | } |
|
|
1490 | |
|
|
1491 | void |
|
|
1492 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1493 | { |
|
|
1494 | ev_clear_pending (EV_A_ (W)w); |
|
|
1495 | if (!ev_is_active (w)) |
|
|
1496 | return; |
|
|
1497 | |
|
|
1498 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1499 | ev_stop (EV_A_ (W)w); |
|
|
1500 | } |
|
|
1501 | |
|
|
1502 | #ifndef SA_RESTART |
|
|
1503 | # define SA_RESTART 0 |
|
|
1504 | #endif |
|
|
1505 | |
|
|
1506 | void |
|
|
1507 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1508 | { |
|
|
1509 | #if EV_MULTIPLICITY |
|
|
1510 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1511 | #endif |
|
|
1512 | if (ev_is_active (w)) |
|
|
1513 | return; |
|
|
1514 | |
|
|
1515 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1516 | |
858 | ev_start ((W)w, 1); |
1517 | ev_start (EV_A_ (W)w, 1); |
859 | array_needsize (signals, signalmax, w->signum, signals_init); |
1518 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
860 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1519 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
861 | |
1520 | |
862 | if (!w->next) |
1521 | if (!((WL)w)->next) |
863 | { |
1522 | { |
|
|
1523 | #if _WIN32 |
|
|
1524 | signal (w->signum, sighandler); |
|
|
1525 | #else |
864 | struct sigaction sa; |
1526 | struct sigaction sa; |
865 | sa.sa_handler = sighandler; |
1527 | sa.sa_handler = sighandler; |
866 | sigfillset (&sa.sa_mask); |
1528 | sigfillset (&sa.sa_mask); |
867 | sa.sa_flags = 0; |
1529 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
868 | sigaction (w->signum, &sa, 0); |
1530 | sigaction (w->signum, &sa, 0); |
|
|
1531 | #endif |
869 | } |
1532 | } |
870 | } |
1533 | } |
871 | |
1534 | |
872 | void |
1535 | void |
873 | evsignal_stop (struct ev_signal *w) |
1536 | ev_signal_stop (EV_P_ struct ev_signal *w) |
874 | { |
1537 | { |
875 | ev_clear ((W)w); |
1538 | ev_clear_pending (EV_A_ (W)w); |
876 | if (!ev_is_active (w)) |
1539 | if (!ev_is_active (w)) |
877 | return; |
1540 | return; |
878 | |
1541 | |
879 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1542 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
880 | ev_stop ((W)w); |
1543 | ev_stop (EV_A_ (W)w); |
881 | |
1544 | |
882 | if (!signals [w->signum - 1].head) |
1545 | if (!signals [w->signum - 1].head) |
883 | signal (w->signum, SIG_DFL); |
1546 | signal (w->signum, SIG_DFL); |
884 | } |
1547 | } |
885 | |
1548 | |
886 | void evidle_start (struct ev_idle *w) |
1549 | void |
|
|
1550 | ev_child_start (EV_P_ struct ev_child *w) |
887 | { |
1551 | { |
|
|
1552 | #if EV_MULTIPLICITY |
|
|
1553 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1554 | #endif |
888 | if (ev_is_active (w)) |
1555 | if (ev_is_active (w)) |
889 | return; |
1556 | return; |
890 | |
1557 | |
891 | ev_start ((W)w, ++idlecnt); |
|
|
892 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
893 | idles [idlecnt - 1] = w; |
|
|
894 | } |
|
|
895 | |
|
|
896 | void evidle_stop (struct ev_idle *w) |
|
|
897 | { |
|
|
898 | ev_clear ((W)w); |
|
|
899 | if (ev_is_active (w)) |
|
|
900 | return; |
|
|
901 | |
|
|
902 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
903 | ev_stop ((W)w); |
|
|
904 | } |
|
|
905 | |
|
|
906 | void evprepare_start (struct ev_prepare *w) |
|
|
907 | { |
|
|
908 | if (ev_is_active (w)) |
|
|
909 | return; |
|
|
910 | |
|
|
911 | ev_start ((W)w, ++preparecnt); |
|
|
912 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
913 | prepares [preparecnt - 1] = w; |
|
|
914 | } |
|
|
915 | |
|
|
916 | void evprepare_stop (struct ev_prepare *w) |
|
|
917 | { |
|
|
918 | ev_clear ((W)w); |
|
|
919 | if (ev_is_active (w)) |
|
|
920 | return; |
|
|
921 | |
|
|
922 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
923 | ev_stop ((W)w); |
|
|
924 | } |
|
|
925 | |
|
|
926 | void evcheck_start (struct ev_check *w) |
|
|
927 | { |
|
|
928 | if (ev_is_active (w)) |
|
|
929 | return; |
|
|
930 | |
|
|
931 | ev_start ((W)w, ++checkcnt); |
|
|
932 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
933 | checks [checkcnt - 1] = w; |
|
|
934 | } |
|
|
935 | |
|
|
936 | void evcheck_stop (struct ev_check *w) |
|
|
937 | { |
|
|
938 | ev_clear ((W)w); |
|
|
939 | if (ev_is_active (w)) |
|
|
940 | return; |
|
|
941 | |
|
|
942 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
943 | ev_stop ((W)w); |
|
|
944 | } |
|
|
945 | |
|
|
946 | void evchild_start (struct ev_child *w) |
|
|
947 | { |
|
|
948 | if (ev_is_active (w)) |
|
|
949 | return; |
|
|
950 | |
|
|
951 | ev_start ((W)w, 1); |
1558 | ev_start (EV_A_ (W)w, 1); |
952 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1559 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
953 | } |
1560 | } |
954 | |
1561 | |
|
|
1562 | void |
955 | void evchild_stop (struct ev_child *w) |
1563 | ev_child_stop (EV_P_ struct ev_child *w) |
956 | { |
1564 | { |
957 | ev_clear ((W)w); |
1565 | ev_clear_pending (EV_A_ (W)w); |
958 | if (ev_is_active (w)) |
1566 | if (!ev_is_active (w)) |
959 | return; |
1567 | return; |
960 | |
1568 | |
961 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1569 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
962 | ev_stop ((W)w); |
1570 | ev_stop (EV_A_ (W)w); |
963 | } |
1571 | } |
964 | |
1572 | |
965 | /*****************************************************************************/ |
1573 | /*****************************************************************************/ |
966 | |
1574 | |
967 | struct ev_once |
1575 | struct ev_once |
… | |
… | |
971 | void (*cb)(int revents, void *arg); |
1579 | void (*cb)(int revents, void *arg); |
972 | void *arg; |
1580 | void *arg; |
973 | }; |
1581 | }; |
974 | |
1582 | |
975 | static void |
1583 | static void |
976 | once_cb (struct ev_once *once, int revents) |
1584 | once_cb (EV_P_ struct ev_once *once, int revents) |
977 | { |
1585 | { |
978 | void (*cb)(int revents, void *arg) = once->cb; |
1586 | void (*cb)(int revents, void *arg) = once->cb; |
979 | void *arg = once->arg; |
1587 | void *arg = once->arg; |
980 | |
1588 | |
981 | evio_stop (&once->io); |
1589 | ev_io_stop (EV_A_ &once->io); |
982 | evtimer_stop (&once->to); |
1590 | ev_timer_stop (EV_A_ &once->to); |
983 | free (once); |
1591 | ev_free (once); |
984 | |
1592 | |
985 | cb (revents, arg); |
1593 | cb (revents, arg); |
986 | } |
1594 | } |
987 | |
1595 | |
988 | static void |
1596 | static void |
989 | once_cb_io (struct ev_io *w, int revents) |
1597 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
990 | { |
1598 | { |
991 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1599 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
992 | } |
1600 | } |
993 | |
1601 | |
994 | static void |
1602 | static void |
995 | once_cb_to (struct ev_timer *w, int revents) |
1603 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
996 | { |
1604 | { |
997 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1605 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
998 | } |
1606 | } |
999 | |
1607 | |
1000 | void |
1608 | void |
1001 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1609 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1002 | { |
1610 | { |
1003 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1611 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1004 | |
1612 | |
1005 | if (!once) |
1613 | if (!once) |
1006 | cb (EV_ERROR, arg); |
1614 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1007 | else |
1615 | else |
1008 | { |
1616 | { |
1009 | once->cb = cb; |
1617 | once->cb = cb; |
1010 | once->arg = arg; |
1618 | once->arg = arg; |
1011 | |
1619 | |
1012 | evw_init (&once->io, once_cb_io); |
1620 | ev_init (&once->io, once_cb_io); |
1013 | |
|
|
1014 | if (fd >= 0) |
1621 | if (fd >= 0) |
1015 | { |
1622 | { |
1016 | evio_set (&once->io, fd, events); |
1623 | ev_io_set (&once->io, fd, events); |
1017 | evio_start (&once->io); |
1624 | ev_io_start (EV_A_ &once->io); |
1018 | } |
1625 | } |
1019 | |
1626 | |
1020 | evw_init (&once->to, once_cb_to); |
1627 | ev_init (&once->to, once_cb_to); |
1021 | |
|
|
1022 | if (timeout >= 0.) |
1628 | if (timeout >= 0.) |
1023 | { |
1629 | { |
1024 | evtimer_set (&once->to, timeout, 0.); |
1630 | ev_timer_set (&once->to, timeout, 0.); |
1025 | evtimer_start (&once->to); |
1631 | ev_timer_start (EV_A_ &once->to); |
1026 | } |
1632 | } |
1027 | } |
1633 | } |
1028 | } |
1634 | } |
1029 | |
1635 | |
1030 | /*****************************************************************************/ |
1636 | #ifdef __cplusplus |
1031 | |
|
|
1032 | #if 0 |
|
|
1033 | |
|
|
1034 | struct ev_io wio; |
|
|
1035 | |
|
|
1036 | static void |
|
|
1037 | sin_cb (struct ev_io *w, int revents) |
|
|
1038 | { |
|
|
1039 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1040 | } |
1637 | } |
1041 | |
|
|
1042 | static void |
|
|
1043 | ocb (struct ev_timer *w, int revents) |
|
|
1044 | { |
|
|
1045 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1046 | evtimer_stop (w); |
|
|
1047 | evtimer_start (w); |
|
|
1048 | } |
|
|
1049 | |
|
|
1050 | static void |
|
|
1051 | scb (struct ev_signal *w, int revents) |
|
|
1052 | { |
|
|
1053 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1054 | evio_stop (&wio); |
|
|
1055 | evio_start (&wio); |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | static void |
|
|
1059 | gcb (struct ev_signal *w, int revents) |
|
|
1060 | { |
|
|
1061 | fprintf (stderr, "generic %x\n", revents); |
|
|
1062 | |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | int main (void) |
|
|
1066 | { |
|
|
1067 | ev_init (0); |
|
|
1068 | |
|
|
1069 | evio_init (&wio, sin_cb, 0, EV_READ); |
|
|
1070 | evio_start (&wio); |
|
|
1071 | |
|
|
1072 | struct ev_timer t[10000]; |
|
|
1073 | |
|
|
1074 | #if 0 |
|
|
1075 | int i; |
|
|
1076 | for (i = 0; i < 10000; ++i) |
|
|
1077 | { |
|
|
1078 | struct ev_timer *w = t + i; |
|
|
1079 | evw_init (w, ocb, i); |
|
|
1080 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1081 | evtimer_start (w); |
|
|
1082 | if (drand48 () < 0.5) |
|
|
1083 | evtimer_stop (w); |
|
|
1084 | } |
|
|
1085 | #endif |
1638 | #endif |
1086 | |
1639 | |
1087 | struct ev_timer t1; |
|
|
1088 | evtimer_init (&t1, ocb, 5, 10); |
|
|
1089 | evtimer_start (&t1); |
|
|
1090 | |
|
|
1091 | struct ev_signal sig; |
|
|
1092 | evsignal_init (&sig, scb, SIGQUIT); |
|
|
1093 | evsignal_start (&sig); |
|
|
1094 | |
|
|
1095 | struct ev_check cw; |
|
|
1096 | evcheck_init (&cw, gcb); |
|
|
1097 | evcheck_start (&cw); |
|
|
1098 | |
|
|
1099 | struct ev_idle iw; |
|
|
1100 | evidle_init (&iw, gcb); |
|
|
1101 | evidle_start (&iw); |
|
|
1102 | |
|
|
1103 | ev_loop (0); |
|
|
1104 | |
|
|
1105 | return 0; |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | #endif |
|
|
1109 | |
|
|
1110 | |
|
|
1111 | |
|
|
1112 | |
|
|