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 | */ |
29 | #if EV_USE_CONFIG_H |
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 |
30 | # include "config.h" |
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) |
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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) |
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61 | # define EV_USE_KQUEUE 1 |
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62 | # endif |
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63 | |
31 | #endif |
64 | #endif |
32 | |
65 | |
33 | #include <math.h> |
66 | #include <math.h> |
34 | #include <stdlib.h> |
67 | #include <stdlib.h> |
35 | #include <unistd.h> |
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36 | #include <fcntl.h> |
68 | #include <fcntl.h> |
37 | #include <signal.h> |
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38 | #include <stddef.h> |
69 | #include <stddef.h> |
39 | |
70 | |
40 | #include <stdio.h> |
71 | #include <stdio.h> |
41 | |
72 | |
42 | #include <assert.h> |
73 | #include <assert.h> |
43 | #include <errno.h> |
74 | #include <errno.h> |
44 | #include <sys/types.h> |
75 | #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> |
76 | #include <time.h> |
48 | |
77 | |
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78 | #include <signal.h> |
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79 | |
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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 |
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89 | # endif |
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90 | #endif |
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91 | |
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92 | /**/ |
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93 | |
49 | #ifndef EV_USE_MONOTONIC |
94 | #ifndef EV_USE_MONOTONIC |
50 | # ifdef CLOCK_MONOTONIC |
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51 | # define EV_USE_MONOTONIC 1 |
95 | # define EV_USE_MONOTONIC 1 |
52 | # endif |
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53 | #endif |
96 | #endif |
54 | |
97 | |
55 | #ifndef EV_USE_SELECT |
98 | #ifndef EV_USE_SELECT |
56 | # define EV_USE_SELECT 1 |
99 | # define EV_USE_SELECT 1 |
57 | #endif |
100 | #endif |
58 | |
101 | |
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102 | #ifndef EV_USE_POLL |
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103 | # define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */ |
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104 | #endif |
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105 | |
59 | #ifndef EV_USE_EPOLL |
106 | #ifndef EV_USE_EPOLL |
60 | # define EV_USE_EPOLL 0 |
107 | # define EV_USE_EPOLL 0 |
61 | #endif |
108 | #endif |
62 | |
109 | |
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110 | #ifndef EV_USE_KQUEUE |
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111 | # define EV_USE_KQUEUE 0 |
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112 | #endif |
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113 | |
63 | #ifndef EV_USE_REALTIME |
114 | #ifndef EV_USE_REALTIME |
64 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
115 | # define EV_USE_REALTIME 1 |
65 | #endif |
116 | #endif |
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117 | |
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118 | /**/ |
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119 | |
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120 | #ifndef CLOCK_MONOTONIC |
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121 | # undef EV_USE_MONOTONIC |
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122 | # define EV_USE_MONOTONIC 0 |
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123 | #endif |
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124 | |
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125 | #ifndef CLOCK_REALTIME |
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126 | # undef EV_USE_REALTIME |
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127 | # define EV_USE_REALTIME 0 |
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128 | #endif |
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129 | |
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130 | #if EV_SELECT_IS_WINSOCKET |
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131 | # include <winsock.h> |
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132 | #endif |
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133 | |
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134 | /**/ |
66 | |
135 | |
67 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
136 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
68 | #define MAX_BLOCKTIME 59.731 |
137 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */ |
69 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
138 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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139 | /*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */ |
70 | |
140 | |
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141 | #ifdef EV_H |
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142 | # include EV_H |
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143 | #else |
71 | #include "ev.h" |
144 | # include "ev.h" |
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145 | #endif |
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146 | |
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147 | #if __GNUC__ >= 3 |
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148 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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149 | # define inline inline |
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150 | #else |
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151 | # define expect(expr,value) (expr) |
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152 | # define inline static |
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153 | #endif |
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154 | |
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155 | #define expect_false(expr) expect ((expr) != 0, 0) |
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156 | #define expect_true(expr) expect ((expr) != 0, 1) |
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157 | |
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158 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
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159 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
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160 | |
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161 | #define EMPTY /* required for microsofts broken pseudo-c compiler */ |
72 | |
162 | |
73 | typedef struct ev_watcher *W; |
163 | typedef struct ev_watcher *W; |
74 | typedef struct ev_watcher_list *WL; |
164 | typedef struct ev_watcher_list *WL; |
75 | typedef struct ev_watcher_time *WT; |
165 | typedef struct ev_watcher_time *WT; |
76 | |
166 | |
77 | static ev_tstamp now, diff; /* monotonic clock */ |
167 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
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168 | |
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169 | #ifdef _WIN32 |
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170 | # include "ev_win32.c" |
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171 | #endif |
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172 | |
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173 | /*****************************************************************************/ |
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174 | |
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175 | static void (*syserr_cb)(const char *msg); |
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176 | |
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177 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
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178 | { |
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179 | syserr_cb = cb; |
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180 | } |
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181 | |
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182 | static void |
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183 | syserr (const char *msg) |
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184 | { |
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185 | if (!msg) |
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186 | msg = "(libev) system error"; |
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187 | |
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188 | if (syserr_cb) |
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189 | syserr_cb (msg); |
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190 | else |
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191 | { |
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192 | perror (msg); |
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193 | abort (); |
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194 | } |
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195 | } |
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196 | |
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197 | static void *(*alloc)(void *ptr, long size); |
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198 | |
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199 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
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200 | { |
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201 | alloc = cb; |
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202 | } |
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203 | |
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204 | static void * |
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205 | ev_realloc (void *ptr, long size) |
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206 | { |
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207 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
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208 | |
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209 | if (!ptr && size) |
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210 | { |
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211 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
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212 | abort (); |
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213 | } |
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214 | |
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215 | return ptr; |
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216 | } |
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217 | |
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218 | #define ev_malloc(size) ev_realloc (0, (size)) |
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219 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
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220 | |
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221 | /*****************************************************************************/ |
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222 | |
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223 | typedef struct |
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224 | { |
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225 | WL head; |
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226 | unsigned char events; |
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227 | unsigned char reify; |
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228 | #if EV_SELECT_IS_WINSOCKET |
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229 | SOCKET handle; |
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230 | #endif |
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231 | } ANFD; |
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232 | |
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233 | typedef struct |
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234 | { |
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235 | W w; |
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236 | int events; |
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237 | } ANPENDING; |
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238 | |
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239 | #if EV_MULTIPLICITY |
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240 | |
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241 | struct ev_loop |
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242 | { |
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243 | ev_tstamp ev_rt_now; |
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244 | #define ev_rt_now ((loop)->ev_rt_now) |
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245 | #define VAR(name,decl) decl; |
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246 | #include "ev_vars.h" |
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247 | #undef VAR |
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248 | }; |
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249 | #include "ev_wrap.h" |
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250 | |
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251 | struct ev_loop default_loop_struct; |
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252 | static struct ev_loop *default_loop; |
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253 | |
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254 | #else |
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255 | |
78 | ev_tstamp ev_now; |
256 | ev_tstamp ev_rt_now; |
79 | int ev_method; |
257 | #define VAR(name,decl) static decl; |
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258 | #include "ev_vars.h" |
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259 | #undef VAR |
80 | |
260 | |
81 | static int have_monotonic; /* runtime */ |
261 | static int default_loop; |
82 | |
262 | |
83 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
263 | #endif |
84 | static void (*method_modify)(int fd, int oev, int nev); |
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85 | static void (*method_poll)(ev_tstamp timeout); |
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86 | |
264 | |
87 | /*****************************************************************************/ |
265 | /*****************************************************************************/ |
88 | |
266 | |
89 | ev_tstamp |
267 | ev_tstamp |
90 | ev_time (void) |
268 | ev_time (void) |
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98 | gettimeofday (&tv, 0); |
276 | gettimeofday (&tv, 0); |
99 | return tv.tv_sec + tv.tv_usec * 1e-6; |
277 | return tv.tv_sec + tv.tv_usec * 1e-6; |
100 | #endif |
278 | #endif |
101 | } |
279 | } |
102 | |
280 | |
103 | static ev_tstamp |
281 | inline ev_tstamp |
104 | get_clock (void) |
282 | get_clock (void) |
105 | { |
283 | { |
106 | #if EV_USE_MONOTONIC |
284 | #if EV_USE_MONOTONIC |
107 | if (have_monotonic) |
285 | if (expect_true (have_monotonic)) |
108 | { |
286 | { |
109 | struct timespec ts; |
287 | struct timespec ts; |
110 | clock_gettime (CLOCK_MONOTONIC, &ts); |
288 | clock_gettime (CLOCK_MONOTONIC, &ts); |
111 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
289 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
112 | } |
290 | } |
113 | #endif |
291 | #endif |
114 | |
292 | |
115 | return ev_time (); |
293 | return ev_time (); |
116 | } |
294 | } |
117 | |
295 | |
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296 | #if EV_MULTIPLICITY |
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297 | ev_tstamp |
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298 | ev_now (EV_P) |
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299 | { |
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300 | return ev_rt_now; |
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301 | } |
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302 | #endif |
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303 | |
118 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
304 | #define array_roundsize(type,n) ((n) | 4 & ~3) |
119 | |
305 | |
120 | #define array_needsize(base,cur,cnt,init) \ |
306 | #define array_needsize(type,base,cur,cnt,init) \ |
121 | if ((cnt) > cur) \ |
307 | if (expect_false ((cnt) > cur)) \ |
122 | { \ |
308 | { \ |
123 | int newcnt = cur; \ |
309 | int newcnt = cur; \ |
124 | do \ |
310 | do \ |
125 | { \ |
311 | { \ |
126 | newcnt = array_roundsize (base, newcnt << 1); \ |
312 | newcnt = array_roundsize (type, newcnt << 1); \ |
127 | } \ |
313 | } \ |
128 | while ((cnt) > newcnt); \ |
314 | while ((cnt) > newcnt); \ |
129 | \ |
315 | \ |
130 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
316 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
131 | init (base + cur, newcnt - cur); \ |
317 | init (base + cur, newcnt - cur); \ |
132 | cur = newcnt; \ |
318 | cur = newcnt; \ |
133 | } |
319 | } |
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320 | |
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321 | #define array_slim(type,stem) \ |
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322 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
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323 | { \ |
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324 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
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325 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
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326 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
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327 | } |
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328 | |
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329 | #define array_free(stem, idx) \ |
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330 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
134 | |
331 | |
135 | /*****************************************************************************/ |
332 | /*****************************************************************************/ |
136 | |
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137 | typedef struct |
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138 | { |
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139 | struct ev_io *head; |
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140 | int events; |
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141 | } ANFD; |
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142 | |
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143 | static ANFD *anfds; |
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144 | static int anfdmax; |
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145 | |
333 | |
146 | static void |
334 | static void |
147 | anfds_init (ANFD *base, int count) |
335 | anfds_init (ANFD *base, int count) |
148 | { |
336 | { |
149 | while (count--) |
337 | while (count--) |
150 | { |
338 | { |
151 | base->head = 0; |
339 | base->head = 0; |
152 | base->events = EV_NONE; |
340 | base->events = EV_NONE; |
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341 | base->reify = 0; |
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342 | |
153 | ++base; |
343 | ++base; |
154 | } |
344 | } |
155 | } |
345 | } |
156 | |
346 | |
157 | typedef struct |
347 | void |
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348 | ev_feed_event (EV_P_ void *w, int revents) |
158 | { |
349 | { |
159 | W w; |
350 | W w_ = (W)w; |
160 | int events; |
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161 | } ANPENDING; |
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162 | |
351 | |
163 | static ANPENDING *pendings; |
352 | if (w_->pending) |
164 | static int pendingmax, pendingcnt; |
353 | { |
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354 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
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355 | return; |
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356 | } |
165 | |
357 | |
166 | static void |
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167 | event (W w, int events) |
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168 | { |
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169 | w->pending = ++pendingcnt; |
358 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
359 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void)); |
171 | pendings [pendingcnt - 1].w = w; |
360 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
172 | pendings [pendingcnt - 1].events = events; |
361 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
173 | } |
362 | } |
174 | |
363 | |
175 | static void |
364 | static void |
176 | queue_events (W *events, int eventcnt, int type) |
365 | queue_events (EV_P_ W *events, int eventcnt, int type) |
177 | { |
366 | { |
178 | int i; |
367 | int i; |
179 | |
368 | |
180 | for (i = 0; i < eventcnt; ++i) |
369 | for (i = 0; i < eventcnt; ++i) |
181 | event (events [i], type); |
370 | ev_feed_event (EV_A_ events [i], type); |
182 | } |
371 | } |
183 | |
372 | |
184 | static void |
373 | inline void |
185 | fd_event (int fd, int events) |
374 | fd_event (EV_P_ int fd, int revents) |
186 | { |
375 | { |
187 | ANFD *anfd = anfds + fd; |
376 | ANFD *anfd = anfds + fd; |
188 | struct ev_io *w; |
377 | struct ev_io *w; |
189 | |
378 | |
190 | for (w = anfd->head; w; w = w->next) |
379 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
191 | { |
380 | { |
192 | int ev = w->events & events; |
381 | int ev = w->events & revents; |
193 | |
382 | |
194 | if (ev) |
383 | if (ev) |
195 | event ((W)w, ev); |
384 | ev_feed_event (EV_A_ (W)w, ev); |
196 | } |
385 | } |
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386 | } |
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387 | |
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388 | void |
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389 | ev_feed_fd_event (EV_P_ int fd, int revents) |
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390 | { |
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391 | fd_event (EV_A_ fd, revents); |
197 | } |
392 | } |
198 | |
393 | |
199 | /*****************************************************************************/ |
394 | /*****************************************************************************/ |
200 | |
395 | |
201 | static int *fdchanges; |
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202 | static int fdchangemax, fdchangecnt; |
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203 | |
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204 | static void |
396 | static void |
205 | fd_reify (void) |
397 | fd_reify (EV_P) |
206 | { |
398 | { |
207 | int i; |
399 | int i; |
208 | |
400 | |
209 | for (i = 0; i < fdchangecnt; ++i) |
401 | for (i = 0; i < fdchangecnt; ++i) |
210 | { |
402 | { |
… | |
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212 | ANFD *anfd = anfds + fd; |
404 | ANFD *anfd = anfds + fd; |
213 | struct ev_io *w; |
405 | struct ev_io *w; |
214 | |
406 | |
215 | int events = 0; |
407 | int events = 0; |
216 | |
408 | |
217 | for (w = anfd->head; w; w = w->next) |
409 | for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next) |
218 | events |= w->events; |
410 | events |= w->events; |
219 | |
411 | |
220 | anfd->events &= ~EV_REIFY; |
412 | #if EV_SELECT_IS_WINSOCKET |
221 | |
413 | if (events) |
222 | if (anfd->events != events) |
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223 | { |
414 | { |
224 | method_modify (fd, anfd->events, events); |
415 | unsigned long argp; |
225 | anfd->events = events; |
416 | anfd->handle = _get_osfhandle (fd); |
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417 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
226 | } |
418 | } |
|
|
419 | #endif |
|
|
420 | |
|
|
421 | anfd->reify = 0; |
|
|
422 | |
|
|
423 | method_modify (EV_A_ fd, anfd->events, events); |
|
|
424 | anfd->events = events; |
227 | } |
425 | } |
228 | |
426 | |
229 | fdchangecnt = 0; |
427 | fdchangecnt = 0; |
230 | } |
428 | } |
231 | |
429 | |
232 | static void |
430 | static void |
233 | fd_change (int fd) |
431 | fd_change (EV_P_ int fd) |
234 | { |
432 | { |
235 | if (anfds [fd].events & EV_REIFY || fdchangecnt < 0) |
433 | if (anfds [fd].reify) |
236 | return; |
434 | return; |
237 | |
435 | |
238 | anfds [fd].events |= EV_REIFY; |
436 | anfds [fd].reify = 1; |
239 | |
437 | |
240 | ++fdchangecnt; |
438 | ++fdchangecnt; |
241 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
439 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void)); |
242 | fdchanges [fdchangecnt - 1] = fd; |
440 | fdchanges [fdchangecnt - 1] = fd; |
243 | } |
441 | } |
244 | |
442 | |
|
|
443 | static void |
|
|
444 | fd_kill (EV_P_ int fd) |
|
|
445 | { |
|
|
446 | struct ev_io *w; |
|
|
447 | |
|
|
448 | while ((w = (struct ev_io *)anfds [fd].head)) |
|
|
449 | { |
|
|
450 | ev_io_stop (EV_A_ w); |
|
|
451 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
452 | } |
|
|
453 | } |
|
|
454 | |
|
|
455 | static int |
|
|
456 | fd_valid (int fd) |
|
|
457 | { |
|
|
458 | #ifdef _WIN32 |
|
|
459 | return _get_osfhandle (fd) != -1; |
|
|
460 | #else |
|
|
461 | return fcntl (fd, F_GETFD) != -1; |
|
|
462 | #endif |
|
|
463 | } |
|
|
464 | |
245 | /* called on EBADF to verify fds */ |
465 | /* called on EBADF to verify fds */ |
246 | static void |
466 | static void |
247 | fd_recheck (void) |
467 | fd_ebadf (EV_P) |
248 | { |
468 | { |
249 | int fd; |
469 | int fd; |
250 | |
470 | |
251 | for (fd = 0; fd < anfdmax; ++fd) |
471 | for (fd = 0; fd < anfdmax; ++fd) |
252 | if (anfds [fd].events) |
472 | if (anfds [fd].events) |
253 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
473 | if (!fd_valid (fd) == -1 && errno == EBADF) |
254 | while (anfds [fd].head) |
474 | fd_kill (EV_A_ fd); |
|
|
475 | } |
|
|
476 | |
|
|
477 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
478 | static void |
|
|
479 | fd_enomem (EV_P) |
|
|
480 | { |
|
|
481 | int fd; |
|
|
482 | |
|
|
483 | for (fd = anfdmax; fd--; ) |
|
|
484 | if (anfds [fd].events) |
255 | { |
485 | { |
256 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT); |
486 | fd_kill (EV_A_ fd); |
257 | ev_io_stop (anfds [fd].head); |
487 | return; |
258 | } |
488 | } |
|
|
489 | } |
|
|
490 | |
|
|
491 | /* usually called after fork if method needs to re-arm all fds from scratch */ |
|
|
492 | static void |
|
|
493 | fd_rearm_all (EV_P) |
|
|
494 | { |
|
|
495 | int fd; |
|
|
496 | |
|
|
497 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
498 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
499 | if (anfds [fd].events) |
|
|
500 | { |
|
|
501 | anfds [fd].events = 0; |
|
|
502 | fd_change (EV_A_ fd); |
|
|
503 | } |
259 | } |
504 | } |
260 | |
505 | |
261 | /*****************************************************************************/ |
506 | /*****************************************************************************/ |
262 | |
507 | |
263 | static struct ev_timer **timers; |
|
|
264 | static int timermax, timercnt; |
|
|
265 | |
|
|
266 | static struct ev_periodic **periodics; |
|
|
267 | static int periodicmax, periodiccnt; |
|
|
268 | |
|
|
269 | static void |
508 | static void |
270 | upheap (WT *timers, int k) |
509 | upheap (WT *heap, int k) |
271 | { |
510 | { |
272 | WT w = timers [k]; |
511 | WT w = heap [k]; |
273 | |
512 | |
274 | while (k && timers [k >> 1]->at > w->at) |
513 | while (k && heap [k >> 1]->at > w->at) |
275 | { |
514 | { |
276 | timers [k] = timers [k >> 1]; |
515 | heap [k] = heap [k >> 1]; |
277 | timers [k]->active = k + 1; |
516 | ((W)heap [k])->active = k + 1; |
278 | k >>= 1; |
517 | k >>= 1; |
279 | } |
518 | } |
280 | |
519 | |
281 | timers [k] = w; |
520 | heap [k] = w; |
282 | timers [k]->active = k + 1; |
521 | ((W)heap [k])->active = k + 1; |
283 | |
522 | |
284 | } |
523 | } |
285 | |
524 | |
286 | static void |
525 | static void |
287 | downheap (WT *timers, int N, int k) |
526 | downheap (WT *heap, int N, int k) |
288 | { |
527 | { |
289 | WT w = timers [k]; |
528 | WT w = heap [k]; |
290 | |
529 | |
291 | while (k < (N >> 1)) |
530 | while (k < (N >> 1)) |
292 | { |
531 | { |
293 | int j = k << 1; |
532 | int j = k << 1; |
294 | |
533 | |
295 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
534 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
296 | ++j; |
535 | ++j; |
297 | |
536 | |
298 | if (w->at <= timers [j]->at) |
537 | if (w->at <= heap [j]->at) |
299 | break; |
538 | break; |
300 | |
539 | |
301 | timers [k] = timers [j]; |
540 | heap [k] = heap [j]; |
302 | timers [k]->active = k + 1; |
541 | ((W)heap [k])->active = k + 1; |
303 | k = j; |
542 | k = j; |
304 | } |
543 | } |
305 | |
544 | |
306 | timers [k] = w; |
545 | heap [k] = w; |
307 | timers [k]->active = k + 1; |
546 | ((W)heap [k])->active = k + 1; |
|
|
547 | } |
|
|
548 | |
|
|
549 | inline void |
|
|
550 | adjustheap (WT *heap, int N, int k) |
|
|
551 | { |
|
|
552 | upheap (heap, k); |
|
|
553 | downheap (heap, N, k); |
308 | } |
554 | } |
309 | |
555 | |
310 | /*****************************************************************************/ |
556 | /*****************************************************************************/ |
311 | |
557 | |
312 | typedef struct |
558 | typedef struct |
313 | { |
559 | { |
314 | struct ev_signal *head; |
560 | WL head; |
315 | sig_atomic_t gotsig; |
561 | sig_atomic_t volatile gotsig; |
316 | } ANSIG; |
562 | } ANSIG; |
317 | |
563 | |
318 | static ANSIG *signals; |
564 | static ANSIG *signals; |
319 | static int signalmax; |
565 | static int signalmax; |
320 | |
566 | |
321 | static int sigpipe [2]; |
567 | static int sigpipe [2]; |
322 | static sig_atomic_t gotsig; |
568 | static sig_atomic_t volatile gotsig; |
323 | static struct ev_io sigev; |
569 | static struct ev_io sigev; |
324 | |
570 | |
325 | static void |
571 | static void |
326 | signals_init (ANSIG *base, int count) |
572 | signals_init (ANSIG *base, int count) |
327 | { |
573 | { |
328 | while (count--) |
574 | while (count--) |
329 | { |
575 | { |
330 | base->head = 0; |
576 | base->head = 0; |
331 | base->gotsig = 0; |
577 | base->gotsig = 0; |
|
|
578 | |
332 | ++base; |
579 | ++base; |
333 | } |
580 | } |
334 | } |
581 | } |
335 | |
582 | |
336 | static void |
583 | static void |
337 | sighandler (int signum) |
584 | sighandler (int signum) |
338 | { |
585 | { |
|
|
586 | #if _WIN32 |
|
|
587 | signal (signum, sighandler); |
|
|
588 | #endif |
|
|
589 | |
339 | signals [signum - 1].gotsig = 1; |
590 | signals [signum - 1].gotsig = 1; |
340 | |
591 | |
341 | if (!gotsig) |
592 | if (!gotsig) |
342 | { |
593 | { |
|
|
594 | int old_errno = errno; |
343 | gotsig = 1; |
595 | gotsig = 1; |
344 | write (sigpipe [1], &gotsig, 1); |
596 | write (sigpipe [1], &signum, 1); |
|
|
597 | errno = old_errno; |
345 | } |
598 | } |
346 | } |
599 | } |
347 | |
600 | |
|
|
601 | void |
|
|
602 | ev_feed_signal_event (EV_P_ int signum) |
|
|
603 | { |
|
|
604 | WL w; |
|
|
605 | |
|
|
606 | #if EV_MULTIPLICITY |
|
|
607 | assert (("feeding signal events is only supported in the default loop", loop == default_loop)); |
|
|
608 | #endif |
|
|
609 | |
|
|
610 | --signum; |
|
|
611 | |
|
|
612 | if (signum < 0 || signum >= signalmax) |
|
|
613 | return; |
|
|
614 | |
|
|
615 | signals [signum].gotsig = 0; |
|
|
616 | |
|
|
617 | for (w = signals [signum].head; w; w = w->next) |
|
|
618 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
|
|
619 | } |
|
|
620 | |
348 | static void |
621 | static void |
349 | sigcb (struct ev_io *iow, int revents) |
622 | sigcb (EV_P_ struct ev_io *iow, int revents) |
350 | { |
623 | { |
351 | struct ev_signal *w; |
|
|
352 | int sig; |
624 | int signum; |
353 | |
625 | |
|
|
626 | read (sigpipe [0], &revents, 1); |
354 | gotsig = 0; |
627 | gotsig = 0; |
355 | read (sigpipe [0], &revents, 1); |
|
|
356 | |
628 | |
357 | for (sig = signalmax; sig--; ) |
629 | for (signum = signalmax; signum--; ) |
358 | if (signals [sig].gotsig) |
630 | if (signals [signum].gotsig) |
359 | { |
631 | ev_feed_signal_event (EV_A_ signum + 1); |
360 | signals [sig].gotsig = 0; |
|
|
361 | |
|
|
362 | for (w = signals [sig].head; w; w = w->next) |
|
|
363 | event ((W)w, EV_SIGNAL); |
|
|
364 | } |
|
|
365 | } |
632 | } |
366 | |
633 | |
367 | static void |
634 | inline void |
368 | siginit (void) |
635 | fd_intern (int fd) |
369 | { |
636 | { |
|
|
637 | #ifdef _WIN32 |
|
|
638 | int arg = 1; |
|
|
639 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
640 | #else |
370 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
641 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
371 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
372 | |
|
|
373 | /* rather than sort out wether we really need nb, set it */ |
|
|
374 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
642 | fcntl (fd, F_SETFL, O_NONBLOCK); |
375 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
643 | #endif |
|
|
644 | } |
|
|
645 | |
|
|
646 | static void |
|
|
647 | siginit (EV_P) |
|
|
648 | { |
|
|
649 | fd_intern (sigpipe [0]); |
|
|
650 | fd_intern (sigpipe [1]); |
376 | |
651 | |
377 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
652 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
378 | ev_io_start (&sigev); |
653 | ev_io_start (EV_A_ &sigev); |
|
|
654 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
379 | } |
655 | } |
380 | |
656 | |
381 | /*****************************************************************************/ |
657 | /*****************************************************************************/ |
382 | |
658 | |
383 | static struct ev_idle **idles; |
|
|
384 | static int idlemax, idlecnt; |
|
|
385 | |
|
|
386 | static struct ev_prepare **prepares; |
|
|
387 | static int preparemax, preparecnt; |
|
|
388 | |
|
|
389 | static struct ev_check **checks; |
|
|
390 | static int checkmax, checkcnt; |
|
|
391 | |
|
|
392 | /*****************************************************************************/ |
|
|
393 | |
|
|
394 | static struct ev_child *childs [PID_HASHSIZE]; |
659 | static struct ev_child *childs [PID_HASHSIZE]; |
|
|
660 | |
|
|
661 | #ifndef _WIN32 |
|
|
662 | |
395 | static struct ev_signal childev; |
663 | static struct ev_signal childev; |
396 | |
664 | |
397 | #ifndef WCONTINUED |
665 | #ifndef WCONTINUED |
398 | # define WCONTINUED 0 |
666 | # define WCONTINUED 0 |
399 | #endif |
667 | #endif |
400 | |
668 | |
401 | static void |
669 | static void |
402 | childcb (struct ev_signal *sw, int revents) |
670 | child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status) |
403 | { |
671 | { |
404 | struct ev_child *w; |
672 | struct ev_child *w; |
|
|
673 | |
|
|
674 | for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next) |
|
|
675 | if (w->pid == pid || !w->pid) |
|
|
676 | { |
|
|
677 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
|
|
678 | w->rpid = pid; |
|
|
679 | w->rstatus = status; |
|
|
680 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
|
|
681 | } |
|
|
682 | } |
|
|
683 | |
|
|
684 | static void |
|
|
685 | childcb (EV_P_ struct ev_signal *sw, int revents) |
|
|
686 | { |
405 | int pid, status; |
687 | int pid, status; |
406 | |
688 | |
407 | while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1) |
689 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
408 | for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next) |
690 | { |
409 | if (w->pid == pid || w->pid == -1) |
691 | /* make sure we are called again until all childs have been reaped */ |
410 | { |
692 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
411 | w->status = status; |
693 | |
412 | event ((W)w, EV_CHILD); |
694 | child_reap (EV_A_ sw, pid, pid, status); |
413 | } |
695 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */ |
|
|
696 | } |
414 | } |
697 | } |
|
|
698 | |
|
|
699 | #endif |
415 | |
700 | |
416 | /*****************************************************************************/ |
701 | /*****************************************************************************/ |
417 | |
702 | |
|
|
703 | #if EV_USE_KQUEUE |
|
|
704 | # include "ev_kqueue.c" |
|
|
705 | #endif |
418 | #if EV_USE_EPOLL |
706 | #if EV_USE_EPOLL |
419 | # include "ev_epoll.c" |
707 | # include "ev_epoll.c" |
420 | #endif |
708 | #endif |
|
|
709 | #if EV_USE_POLL |
|
|
710 | # include "ev_poll.c" |
|
|
711 | #endif |
421 | #if EV_USE_SELECT |
712 | #if EV_USE_SELECT |
422 | # include "ev_select.c" |
713 | # include "ev_select.c" |
423 | #endif |
714 | #endif |
424 | |
715 | |
425 | int |
716 | int |
… | |
… | |
432 | ev_version_minor (void) |
723 | ev_version_minor (void) |
433 | { |
724 | { |
434 | return EV_VERSION_MINOR; |
725 | return EV_VERSION_MINOR; |
435 | } |
726 | } |
436 | |
727 | |
437 | int ev_init (int flags) |
728 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
729 | static int |
|
|
730 | enable_secure (void) |
438 | { |
731 | { |
|
|
732 | #ifdef _WIN32 |
|
|
733 | return 0; |
|
|
734 | #else |
|
|
735 | return getuid () != geteuid () |
|
|
736 | || getgid () != getegid (); |
|
|
737 | #endif |
|
|
738 | } |
|
|
739 | |
|
|
740 | int |
|
|
741 | ev_method (EV_P) |
|
|
742 | { |
|
|
743 | return method; |
|
|
744 | } |
|
|
745 | |
|
|
746 | static void |
|
|
747 | loop_init (EV_P_ int methods) |
|
|
748 | { |
439 | if (!ev_method) |
749 | if (!method) |
440 | { |
750 | { |
441 | #if EV_USE_MONOTONIC |
751 | #if EV_USE_MONOTONIC |
442 | { |
752 | { |
443 | struct timespec ts; |
753 | struct timespec ts; |
444 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
754 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
445 | have_monotonic = 1; |
755 | have_monotonic = 1; |
446 | } |
756 | } |
447 | #endif |
757 | #endif |
448 | |
758 | |
449 | ev_now = ev_time (); |
759 | ev_rt_now = ev_time (); |
450 | now = get_clock (); |
760 | mn_now = get_clock (); |
|
|
761 | now_floor = mn_now; |
451 | diff = ev_now - now; |
762 | rtmn_diff = ev_rt_now - mn_now; |
452 | |
763 | |
453 | if (pipe (sigpipe)) |
764 | if (methods == EVMETHOD_AUTO) |
454 | return 0; |
765 | if (!enable_secure () && getenv ("LIBEV_METHODS")) |
455 | |
766 | methods = atoi (getenv ("LIBEV_METHODS")); |
|
|
767 | else |
456 | ev_method = EVMETHOD_NONE; |
768 | methods = EVMETHOD_ANY; |
|
|
769 | |
|
|
770 | method = 0; |
|
|
771 | #if EV_USE_KQUEUE |
|
|
772 | if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods); |
|
|
773 | #endif |
457 | #if EV_USE_EPOLL |
774 | #if EV_USE_EPOLL |
458 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
775 | if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods); |
|
|
776 | #endif |
|
|
777 | #if EV_USE_POLL |
|
|
778 | if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods); |
459 | #endif |
779 | #endif |
460 | #if EV_USE_SELECT |
780 | #if EV_USE_SELECT |
461 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
781 | if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods); |
462 | #endif |
782 | #endif |
463 | |
783 | |
|
|
784 | ev_init (&sigev, sigcb); |
|
|
785 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
786 | } |
|
|
787 | } |
|
|
788 | |
|
|
789 | void |
|
|
790 | loop_destroy (EV_P) |
|
|
791 | { |
|
|
792 | int i; |
|
|
793 | |
|
|
794 | #if EV_USE_KQUEUE |
|
|
795 | if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A); |
|
|
796 | #endif |
|
|
797 | #if EV_USE_EPOLL |
|
|
798 | if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A); |
|
|
799 | #endif |
|
|
800 | #if EV_USE_POLL |
|
|
801 | if (method == EVMETHOD_POLL ) poll_destroy (EV_A); |
|
|
802 | #endif |
|
|
803 | #if EV_USE_SELECT |
|
|
804 | if (method == EVMETHOD_SELECT) select_destroy (EV_A); |
|
|
805 | #endif |
|
|
806 | |
|
|
807 | for (i = NUMPRI; i--; ) |
|
|
808 | array_free (pending, [i]); |
|
|
809 | |
|
|
810 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
811 | array_free (fdchange, EMPTY); |
|
|
812 | array_free (timer, EMPTY); |
|
|
813 | #if EV_PERIODICS |
|
|
814 | array_free (periodic, EMPTY); |
|
|
815 | #endif |
|
|
816 | array_free (idle, EMPTY); |
|
|
817 | array_free (prepare, EMPTY); |
|
|
818 | array_free (check, EMPTY); |
|
|
819 | |
|
|
820 | method = 0; |
|
|
821 | } |
|
|
822 | |
|
|
823 | static void |
|
|
824 | loop_fork (EV_P) |
|
|
825 | { |
|
|
826 | #if EV_USE_EPOLL |
|
|
827 | if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A); |
|
|
828 | #endif |
|
|
829 | #if EV_USE_KQUEUE |
|
|
830 | if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A); |
|
|
831 | #endif |
|
|
832 | |
|
|
833 | if (ev_is_active (&sigev)) |
|
|
834 | { |
|
|
835 | /* default loop */ |
|
|
836 | |
|
|
837 | ev_ref (EV_A); |
|
|
838 | ev_io_stop (EV_A_ &sigev); |
|
|
839 | close (sigpipe [0]); |
|
|
840 | close (sigpipe [1]); |
|
|
841 | |
|
|
842 | while (pipe (sigpipe)) |
|
|
843 | syserr ("(libev) error creating pipe"); |
|
|
844 | |
|
|
845 | siginit (EV_A); |
|
|
846 | } |
|
|
847 | |
|
|
848 | postfork = 0; |
|
|
849 | } |
|
|
850 | |
|
|
851 | #if EV_MULTIPLICITY |
|
|
852 | struct ev_loop * |
|
|
853 | ev_loop_new (int methods) |
|
|
854 | { |
|
|
855 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
856 | |
|
|
857 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
858 | |
|
|
859 | loop_init (EV_A_ methods); |
|
|
860 | |
|
|
861 | if (ev_method (EV_A)) |
|
|
862 | return loop; |
|
|
863 | |
|
|
864 | return 0; |
|
|
865 | } |
|
|
866 | |
|
|
867 | void |
|
|
868 | ev_loop_destroy (EV_P) |
|
|
869 | { |
|
|
870 | loop_destroy (EV_A); |
|
|
871 | ev_free (loop); |
|
|
872 | } |
|
|
873 | |
|
|
874 | void |
|
|
875 | ev_loop_fork (EV_P) |
|
|
876 | { |
|
|
877 | postfork = 1; |
|
|
878 | } |
|
|
879 | |
|
|
880 | #endif |
|
|
881 | |
|
|
882 | #if EV_MULTIPLICITY |
|
|
883 | struct ev_loop * |
|
|
884 | #else |
|
|
885 | int |
|
|
886 | #endif |
|
|
887 | ev_default_loop (int methods) |
|
|
888 | { |
|
|
889 | if (sigpipe [0] == sigpipe [1]) |
|
|
890 | if (pipe (sigpipe)) |
|
|
891 | return 0; |
|
|
892 | |
|
|
893 | if (!default_loop) |
|
|
894 | { |
|
|
895 | #if EV_MULTIPLICITY |
|
|
896 | struct ev_loop *loop = default_loop = &default_loop_struct; |
|
|
897 | #else |
|
|
898 | default_loop = 1; |
|
|
899 | #endif |
|
|
900 | |
|
|
901 | loop_init (EV_A_ methods); |
|
|
902 | |
464 | if (ev_method) |
903 | if (ev_method (EV_A)) |
465 | { |
904 | { |
466 | ev_watcher_init (&sigev, sigcb); |
|
|
467 | siginit (); |
905 | siginit (EV_A); |
468 | |
906 | |
|
|
907 | #ifndef _WIN32 |
469 | ev_signal_init (&childev, childcb, SIGCHLD); |
908 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
909 | ev_set_priority (&childev, EV_MAXPRI); |
470 | ev_signal_start (&childev); |
910 | ev_signal_start (EV_A_ &childev); |
|
|
911 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
912 | #endif |
471 | } |
913 | } |
|
|
914 | else |
|
|
915 | default_loop = 0; |
472 | } |
916 | } |
473 | |
917 | |
474 | return ev_method; |
918 | return default_loop; |
|
|
919 | } |
|
|
920 | |
|
|
921 | void |
|
|
922 | ev_default_destroy (void) |
|
|
923 | { |
|
|
924 | #if EV_MULTIPLICITY |
|
|
925 | struct ev_loop *loop = default_loop; |
|
|
926 | #endif |
|
|
927 | |
|
|
928 | #ifndef _WIN32 |
|
|
929 | ev_ref (EV_A); /* child watcher */ |
|
|
930 | ev_signal_stop (EV_A_ &childev); |
|
|
931 | #endif |
|
|
932 | |
|
|
933 | ev_ref (EV_A); /* signal watcher */ |
|
|
934 | ev_io_stop (EV_A_ &sigev); |
|
|
935 | |
|
|
936 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
937 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
938 | |
|
|
939 | loop_destroy (EV_A); |
|
|
940 | } |
|
|
941 | |
|
|
942 | void |
|
|
943 | ev_default_fork (void) |
|
|
944 | { |
|
|
945 | #if EV_MULTIPLICITY |
|
|
946 | struct ev_loop *loop = default_loop; |
|
|
947 | #endif |
|
|
948 | |
|
|
949 | if (method) |
|
|
950 | postfork = 1; |
475 | } |
951 | } |
476 | |
952 | |
477 | /*****************************************************************************/ |
953 | /*****************************************************************************/ |
478 | |
954 | |
479 | void |
|
|
480 | ev_prefork (void) |
|
|
481 | { |
|
|
482 | /* nop */ |
|
|
483 | } |
|
|
484 | |
|
|
485 | void |
|
|
486 | ev_postfork_parent (void) |
|
|
487 | { |
|
|
488 | /* nop */ |
|
|
489 | } |
|
|
490 | |
|
|
491 | void |
|
|
492 | ev_postfork_child (void) |
|
|
493 | { |
|
|
494 | #if EV_USE_EPOLL |
|
|
495 | if (ev_method == EVMETHOD_EPOLL) |
|
|
496 | epoll_postfork_child (); |
|
|
497 | #endif |
|
|
498 | |
|
|
499 | ev_io_stop (&sigev); |
|
|
500 | close (sigpipe [0]); |
|
|
501 | close (sigpipe [1]); |
|
|
502 | pipe (sigpipe); |
|
|
503 | siginit (); |
|
|
504 | } |
|
|
505 | |
|
|
506 | /*****************************************************************************/ |
|
|
507 | |
|
|
508 | static void |
955 | static int |
|
|
956 | any_pending (EV_P) |
|
|
957 | { |
|
|
958 | int pri; |
|
|
959 | |
|
|
960 | for (pri = NUMPRI; pri--; ) |
|
|
961 | if (pendingcnt [pri]) |
|
|
962 | return 1; |
|
|
963 | |
|
|
964 | return 0; |
|
|
965 | } |
|
|
966 | |
|
|
967 | static void |
509 | call_pending (void) |
968 | call_pending (EV_P) |
510 | { |
969 | { |
|
|
970 | int pri; |
|
|
971 | |
|
|
972 | for (pri = NUMPRI; pri--; ) |
511 | while (pendingcnt) |
973 | while (pendingcnt [pri]) |
512 | { |
974 | { |
513 | ANPENDING *p = pendings + --pendingcnt; |
975 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
514 | |
976 | |
515 | if (p->w) |
977 | if (p->w) |
516 | { |
978 | { |
517 | p->w->pending = 0; |
979 | p->w->pending = 0; |
518 | p->w->cb (p->w, p->events); |
980 | EV_CB_INVOKE (p->w, p->events); |
519 | } |
981 | } |
520 | } |
982 | } |
521 | } |
983 | } |
522 | |
984 | |
523 | static void |
985 | static void |
524 | timers_reify (void) |
986 | timers_reify (EV_P) |
525 | { |
987 | { |
526 | while (timercnt && timers [0]->at <= now) |
988 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
527 | { |
989 | { |
528 | struct ev_timer *w = timers [0]; |
990 | struct ev_timer *w = timers [0]; |
|
|
991 | |
|
|
992 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
529 | |
993 | |
530 | /* first reschedule or stop timer */ |
994 | /* first reschedule or stop timer */ |
531 | if (w->repeat) |
995 | if (w->repeat) |
532 | { |
996 | { |
|
|
997 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
|
|
998 | |
533 | w->at = now + w->repeat; |
999 | ((WT)w)->at += w->repeat; |
534 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
1000 | if (((WT)w)->at < mn_now) |
|
|
1001 | ((WT)w)->at = mn_now; |
|
|
1002 | |
535 | downheap ((WT *)timers, timercnt, 0); |
1003 | downheap ((WT *)timers, timercnt, 0); |
536 | } |
1004 | } |
537 | else |
1005 | else |
538 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
1006 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
539 | |
1007 | |
540 | event ((W)w, EV_TIMEOUT); |
1008 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
541 | } |
1009 | } |
542 | } |
1010 | } |
543 | |
1011 | |
|
|
1012 | #if EV_PERIODICS |
544 | static void |
1013 | static void |
545 | periodics_reify (void) |
1014 | periodics_reify (EV_P) |
546 | { |
1015 | { |
547 | while (periodiccnt && periodics [0]->at <= ev_now) |
1016 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
548 | { |
1017 | { |
549 | struct ev_periodic *w = periodics [0]; |
1018 | struct ev_periodic *w = periodics [0]; |
550 | |
1019 | |
|
|
1020 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1021 | |
551 | /* first reschedule or stop timer */ |
1022 | /* first reschedule or stop timer */ |
552 | if (w->interval) |
1023 | if (w->reschedule_cb) |
553 | { |
1024 | { |
|
|
1025 | ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
|
|
1026 | |
|
|
1027 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1028 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1029 | } |
|
|
1030 | else if (w->interval) |
|
|
1031 | { |
554 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
1032 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
555 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
1033 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
556 | downheap ((WT *)periodics, periodiccnt, 0); |
1034 | downheap ((WT *)periodics, periodiccnt, 0); |
557 | } |
1035 | } |
558 | else |
1036 | else |
559 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
1037 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
560 | |
1038 | |
561 | event ((W)w, EV_TIMEOUT); |
1039 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
562 | } |
1040 | } |
563 | } |
1041 | } |
564 | |
1042 | |
565 | static void |
1043 | static void |
566 | periodics_reschedule (ev_tstamp diff) |
1044 | periodics_reschedule (EV_P) |
567 | { |
1045 | { |
568 | int i; |
1046 | int i; |
569 | |
1047 | |
570 | /* adjust periodics after time jump */ |
1048 | /* adjust periodics after time jump */ |
571 | for (i = 0; i < periodiccnt; ++i) |
1049 | for (i = 0; i < periodiccnt; ++i) |
572 | { |
1050 | { |
573 | struct ev_periodic *w = periodics [i]; |
1051 | struct ev_periodic *w = periodics [i]; |
574 | |
1052 | |
|
|
1053 | if (w->reschedule_cb) |
|
|
1054 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
575 | if (w->interval) |
1055 | else if (w->interval) |
|
|
1056 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1057 | } |
|
|
1058 | |
|
|
1059 | /* now rebuild the heap */ |
|
|
1060 | for (i = periodiccnt >> 1; i--; ) |
|
|
1061 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1062 | } |
|
|
1063 | #endif |
|
|
1064 | |
|
|
1065 | inline int |
|
|
1066 | time_update_monotonic (EV_P) |
|
|
1067 | { |
|
|
1068 | mn_now = get_clock (); |
|
|
1069 | |
|
|
1070 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1071 | { |
|
|
1072 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1073 | return 0; |
|
|
1074 | } |
|
|
1075 | else |
|
|
1076 | { |
|
|
1077 | now_floor = mn_now; |
|
|
1078 | ev_rt_now = ev_time (); |
|
|
1079 | return 1; |
|
|
1080 | } |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | static void |
|
|
1084 | time_update (EV_P) |
|
|
1085 | { |
|
|
1086 | int i; |
|
|
1087 | |
|
|
1088 | #if EV_USE_MONOTONIC |
|
|
1089 | if (expect_true (have_monotonic)) |
|
|
1090 | { |
|
|
1091 | if (time_update_monotonic (EV_A)) |
576 | { |
1092 | { |
577 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
1093 | ev_tstamp odiff = rtmn_diff; |
578 | |
1094 | |
579 | if (fabs (diff) >= 1e-4) |
1095 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
580 | { |
1096 | { |
581 | ev_periodic_stop (w); |
1097 | rtmn_diff = ev_rt_now - mn_now; |
582 | ev_periodic_start (w); |
|
|
583 | |
1098 | |
584 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
1099 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
|
|
1100 | return; /* all is well */ |
|
|
1101 | |
|
|
1102 | ev_rt_now = ev_time (); |
|
|
1103 | mn_now = get_clock (); |
|
|
1104 | now_floor = mn_now; |
585 | } |
1105 | } |
|
|
1106 | |
|
|
1107 | # if EV_PERIODICS |
|
|
1108 | periodics_reschedule (EV_A); |
|
|
1109 | # endif |
|
|
1110 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1111 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
586 | } |
1112 | } |
587 | } |
1113 | } |
588 | } |
1114 | else |
589 | |
1115 | #endif |
590 | static void |
1116 | { |
591 | time_update (void) |
|
|
592 | { |
|
|
593 | int i; |
|
|
594 | |
|
|
595 | ev_now = ev_time (); |
1117 | ev_rt_now = ev_time (); |
596 | |
1118 | |
597 | if (have_monotonic) |
1119 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
598 | { |
|
|
599 | ev_tstamp odiff = diff; |
|
|
600 | |
|
|
601 | for (i = 4; --i; ) /* loop a few times, before making important decisions */ |
|
|
602 | { |
1120 | { |
603 | now = get_clock (); |
1121 | #if EV_PERIODICS |
604 | diff = ev_now - now; |
|
|
605 | |
|
|
606 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
|
|
607 | return; /* all is well */ |
|
|
608 | |
|
|
609 | ev_now = ev_time (); |
|
|
610 | } |
|
|
611 | |
|
|
612 | periodics_reschedule (diff - odiff); |
|
|
613 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
614 | } |
|
|
615 | else |
|
|
616 | { |
|
|
617 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
618 | { |
|
|
619 | periodics_reschedule (ev_now - now); |
1122 | periodics_reschedule (EV_A); |
|
|
1123 | #endif |
620 | |
1124 | |
621 | /* adjust timers. this is easy, as the offset is the same for all */ |
1125 | /* adjust timers. this is easy, as the offset is the same for all */ |
622 | for (i = 0; i < timercnt; ++i) |
1126 | for (i = 0; i < timercnt; ++i) |
623 | timers [i]->at += diff; |
1127 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
624 | } |
1128 | } |
625 | |
1129 | |
626 | now = ev_now; |
1130 | mn_now = ev_rt_now; |
627 | } |
1131 | } |
628 | } |
1132 | } |
629 | |
1133 | |
630 | int ev_loop_done; |
1134 | void |
|
|
1135 | ev_ref (EV_P) |
|
|
1136 | { |
|
|
1137 | ++activecnt; |
|
|
1138 | } |
631 | |
1139 | |
|
|
1140 | void |
|
|
1141 | ev_unref (EV_P) |
|
|
1142 | { |
|
|
1143 | --activecnt; |
|
|
1144 | } |
|
|
1145 | |
|
|
1146 | static int loop_done; |
|
|
1147 | |
|
|
1148 | void |
632 | void ev_loop (int flags) |
1149 | ev_loop (EV_P_ int flags) |
633 | { |
1150 | { |
634 | double block; |
1151 | double block; |
635 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
1152 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
636 | |
1153 | |
637 | do |
1154 | do |
638 | { |
1155 | { |
639 | /* queue check watchers (and execute them) */ |
1156 | /* queue check watchers (and execute them) */ |
640 | if (preparecnt) |
1157 | if (expect_false (preparecnt)) |
641 | { |
1158 | { |
642 | queue_events ((W *)prepares, preparecnt, EV_PREPARE); |
1159 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
643 | call_pending (); |
1160 | call_pending (EV_A); |
644 | } |
1161 | } |
645 | |
1162 | |
|
|
1163 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1164 | if (expect_false (postfork)) |
|
|
1165 | loop_fork (EV_A); |
|
|
1166 | |
646 | /* update fd-related kernel structures */ |
1167 | /* update fd-related kernel structures */ |
647 | fd_reify (); |
1168 | fd_reify (EV_A); |
648 | |
1169 | |
649 | /* calculate blocking time */ |
1170 | /* calculate blocking time */ |
650 | |
1171 | |
651 | /* we only need this for !monotonic clockor timers, but as we basically |
1172 | /* we only need this for !monotonic clock or timers, but as we basically |
652 | always have timers, we just calculate it always */ |
1173 | always have timers, we just calculate it always */ |
|
|
1174 | #if EV_USE_MONOTONIC |
|
|
1175 | if (expect_true (have_monotonic)) |
|
|
1176 | time_update_monotonic (EV_A); |
|
|
1177 | else |
|
|
1178 | #endif |
|
|
1179 | { |
653 | ev_now = ev_time (); |
1180 | ev_rt_now = ev_time (); |
|
|
1181 | mn_now = ev_rt_now; |
|
|
1182 | } |
654 | |
1183 | |
655 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
1184 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
656 | block = 0.; |
1185 | block = 0.; |
657 | else |
1186 | else |
658 | { |
1187 | { |
659 | block = MAX_BLOCKTIME; |
1188 | block = MAX_BLOCKTIME; |
660 | |
1189 | |
661 | if (timercnt) |
1190 | if (timercnt) |
662 | { |
1191 | { |
663 | ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge; |
1192 | ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge; |
664 | if (block > to) block = to; |
1193 | if (block > to) block = to; |
665 | } |
1194 | } |
666 | |
1195 | |
|
|
1196 | #if EV_PERIODICS |
667 | if (periodiccnt) |
1197 | if (periodiccnt) |
668 | { |
1198 | { |
669 | ev_tstamp to = periodics [0]->at - ev_now + method_fudge; |
1199 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge; |
670 | if (block > to) block = to; |
1200 | if (block > to) block = to; |
671 | } |
1201 | } |
|
|
1202 | #endif |
672 | |
1203 | |
673 | if (block < 0.) block = 0.; |
1204 | if (block < 0.) block = 0.; |
674 | } |
1205 | } |
675 | |
1206 | |
676 | method_poll (block); |
1207 | method_poll (EV_A_ block); |
677 | |
1208 | |
678 | /* update ev_now, do magic */ |
1209 | /* update ev_rt_now, do magic */ |
679 | time_update (); |
1210 | time_update (EV_A); |
680 | |
1211 | |
681 | /* queue pending timers and reschedule them */ |
1212 | /* queue pending timers and reschedule them */ |
682 | timers_reify (); /* relative timers called last */ |
1213 | timers_reify (EV_A); /* relative timers called last */ |
|
|
1214 | #if EV_PERIODICS |
683 | periodics_reify (); /* absolute timers called first */ |
1215 | periodics_reify (EV_A); /* absolute timers called first */ |
|
|
1216 | #endif |
684 | |
1217 | |
685 | /* queue idle watchers unless io or timers are pending */ |
1218 | /* queue idle watchers unless io or timers are pending */ |
686 | if (!pendingcnt) |
1219 | if (idlecnt && !any_pending (EV_A)) |
687 | queue_events ((W *)idles, idlecnt, EV_IDLE); |
1220 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
688 | |
1221 | |
689 | /* queue check watchers, to be executed first */ |
1222 | /* queue check watchers, to be executed first */ |
690 | if (checkcnt) |
1223 | if (checkcnt) |
691 | queue_events ((W *)checks, checkcnt, EV_CHECK); |
1224 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
692 | |
1225 | |
693 | call_pending (); |
1226 | call_pending (EV_A); |
694 | } |
1227 | } |
695 | while (!ev_loop_done); |
1228 | while (activecnt && !loop_done); |
696 | |
1229 | |
697 | if (ev_loop_done != 2) |
1230 | if (loop_done != 2) |
698 | ev_loop_done = 0; |
1231 | loop_done = 0; |
|
|
1232 | } |
|
|
1233 | |
|
|
1234 | void |
|
|
1235 | ev_unloop (EV_P_ int how) |
|
|
1236 | { |
|
|
1237 | loop_done = how; |
699 | } |
1238 | } |
700 | |
1239 | |
701 | /*****************************************************************************/ |
1240 | /*****************************************************************************/ |
702 | |
1241 | |
703 | static void |
1242 | inline void |
704 | wlist_add (WL *head, WL elem) |
1243 | wlist_add (WL *head, WL elem) |
705 | { |
1244 | { |
706 | elem->next = *head; |
1245 | elem->next = *head; |
707 | *head = elem; |
1246 | *head = elem; |
708 | } |
1247 | } |
709 | |
1248 | |
710 | static void |
1249 | inline void |
711 | wlist_del (WL *head, WL elem) |
1250 | wlist_del (WL *head, WL elem) |
712 | { |
1251 | { |
713 | while (*head) |
1252 | while (*head) |
714 | { |
1253 | { |
715 | if (*head == elem) |
1254 | if (*head == elem) |
… | |
… | |
720 | |
1259 | |
721 | head = &(*head)->next; |
1260 | head = &(*head)->next; |
722 | } |
1261 | } |
723 | } |
1262 | } |
724 | |
1263 | |
725 | static void |
1264 | inline void |
726 | ev_clear (W w) |
1265 | ev_clear_pending (EV_P_ W w) |
727 | { |
1266 | { |
728 | if (w->pending) |
1267 | if (w->pending) |
729 | { |
1268 | { |
730 | pendings [w->pending - 1].w = 0; |
1269 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
731 | w->pending = 0; |
1270 | w->pending = 0; |
732 | } |
1271 | } |
733 | } |
1272 | } |
734 | |
1273 | |
735 | static void |
1274 | inline void |
736 | ev_start (W w, int active) |
1275 | ev_start (EV_P_ W w, int active) |
737 | { |
1276 | { |
|
|
1277 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1278 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1279 | |
738 | w->active = active; |
1280 | w->active = active; |
|
|
1281 | ev_ref (EV_A); |
739 | } |
1282 | } |
740 | |
1283 | |
741 | static void |
1284 | inline void |
742 | ev_stop (W w) |
1285 | ev_stop (EV_P_ W w) |
743 | { |
1286 | { |
|
|
1287 | ev_unref (EV_A); |
744 | w->active = 0; |
1288 | w->active = 0; |
745 | } |
1289 | } |
746 | |
1290 | |
747 | /*****************************************************************************/ |
1291 | /*****************************************************************************/ |
748 | |
1292 | |
749 | void |
1293 | void |
750 | ev_io_start (struct ev_io *w) |
1294 | ev_io_start (EV_P_ struct ev_io *w) |
751 | { |
1295 | { |
|
|
1296 | int fd = w->fd; |
|
|
1297 | |
752 | if (ev_is_active (w)) |
1298 | if (ev_is_active (w)) |
753 | return; |
1299 | return; |
754 | |
1300 | |
755 | int fd = w->fd; |
1301 | assert (("ev_io_start called with negative fd", fd >= 0)); |
756 | |
1302 | |
757 | ev_start ((W)w, 1); |
1303 | ev_start (EV_A_ (W)w, 1); |
758 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
1304 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
759 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
1305 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
760 | |
1306 | |
761 | fd_change (fd); |
1307 | fd_change (EV_A_ fd); |
762 | } |
1308 | } |
763 | |
1309 | |
764 | void |
1310 | void |
765 | ev_io_stop (struct ev_io *w) |
1311 | ev_io_stop (EV_P_ struct ev_io *w) |
766 | { |
1312 | { |
767 | ev_clear ((W)w); |
1313 | ev_clear_pending (EV_A_ (W)w); |
768 | if (!ev_is_active (w)) |
1314 | if (!ev_is_active (w)) |
769 | return; |
1315 | return; |
770 | |
1316 | |
|
|
1317 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1318 | |
771 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
1319 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
772 | ev_stop ((W)w); |
1320 | ev_stop (EV_A_ (W)w); |
773 | |
1321 | |
774 | fd_change (w->fd); |
1322 | fd_change (EV_A_ w->fd); |
775 | } |
1323 | } |
776 | |
1324 | |
777 | void |
1325 | void |
778 | ev_timer_start (struct ev_timer *w) |
1326 | ev_timer_start (EV_P_ struct ev_timer *w) |
779 | { |
1327 | { |
780 | if (ev_is_active (w)) |
1328 | if (ev_is_active (w)) |
781 | return; |
1329 | return; |
782 | |
1330 | |
783 | w->at += now; |
1331 | ((WT)w)->at += mn_now; |
784 | |
1332 | |
785 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
1333 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
786 | |
1334 | |
787 | ev_start ((W)w, ++timercnt); |
1335 | ev_start (EV_A_ (W)w, ++timercnt); |
788 | array_needsize (timers, timermax, timercnt, ); |
1336 | array_needsize (struct ev_timer *, timers, timermax, timercnt, (void)); |
789 | timers [timercnt - 1] = w; |
1337 | timers [timercnt - 1] = w; |
790 | upheap ((WT *)timers, timercnt - 1); |
1338 | upheap ((WT *)timers, timercnt - 1); |
791 | } |
|
|
792 | |
1339 | |
|
|
1340 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1341 | } |
|
|
1342 | |
793 | void |
1343 | void |
794 | ev_timer_stop (struct ev_timer *w) |
1344 | ev_timer_stop (EV_P_ struct ev_timer *w) |
795 | { |
1345 | { |
796 | ev_clear ((W)w); |
1346 | ev_clear_pending (EV_A_ (W)w); |
797 | if (!ev_is_active (w)) |
1347 | if (!ev_is_active (w)) |
798 | return; |
1348 | return; |
799 | |
1349 | |
|
|
1350 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1351 | |
800 | if (w->active < timercnt--) |
1352 | if (((W)w)->active < timercnt--) |
801 | { |
1353 | { |
802 | timers [w->active - 1] = timers [timercnt]; |
1354 | timers [((W)w)->active - 1] = timers [timercnt]; |
803 | downheap ((WT *)timers, timercnt, w->active - 1); |
1355 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
804 | } |
1356 | } |
805 | |
1357 | |
806 | w->at = w->repeat; |
1358 | ((WT)w)->at -= mn_now; |
807 | |
1359 | |
808 | ev_stop ((W)w); |
1360 | ev_stop (EV_A_ (W)w); |
809 | } |
1361 | } |
810 | |
1362 | |
811 | void |
1363 | void |
812 | ev_timer_again (struct ev_timer *w) |
1364 | ev_timer_again (EV_P_ struct ev_timer *w) |
813 | { |
1365 | { |
814 | if (ev_is_active (w)) |
1366 | if (ev_is_active (w)) |
815 | { |
1367 | { |
816 | if (w->repeat) |
1368 | if (w->repeat) |
817 | { |
1369 | { |
818 | w->at = now + w->repeat; |
1370 | ((WT)w)->at = mn_now + w->repeat; |
819 | downheap ((WT *)timers, timercnt, w->active - 1); |
1371 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
820 | } |
1372 | } |
821 | else |
1373 | else |
822 | ev_timer_stop (w); |
1374 | ev_timer_stop (EV_A_ w); |
823 | } |
1375 | } |
824 | else if (w->repeat) |
1376 | else if (w->repeat) |
825 | ev_timer_start (w); |
1377 | ev_timer_start (EV_A_ w); |
826 | } |
1378 | } |
827 | |
1379 | |
|
|
1380 | #if EV_PERIODICS |
828 | void |
1381 | void |
829 | ev_periodic_start (struct ev_periodic *w) |
1382 | ev_periodic_start (EV_P_ struct ev_periodic *w) |
830 | { |
1383 | { |
831 | if (ev_is_active (w)) |
1384 | if (ev_is_active (w)) |
832 | return; |
1385 | return; |
833 | |
1386 | |
834 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
1387 | if (w->reschedule_cb) |
835 | |
1388 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1389 | else if (w->interval) |
|
|
1390 | { |
|
|
1391 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
836 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
1392 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
837 | if (w->interval) |
|
|
838 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
1393 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1394 | } |
839 | |
1395 | |
840 | ev_start ((W)w, ++periodiccnt); |
1396 | ev_start (EV_A_ (W)w, ++periodiccnt); |
841 | array_needsize (periodics, periodicmax, periodiccnt, ); |
1397 | array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void)); |
842 | periodics [periodiccnt - 1] = w; |
1398 | periodics [periodiccnt - 1] = w; |
843 | upheap ((WT *)periodics, periodiccnt - 1); |
1399 | upheap ((WT *)periodics, periodiccnt - 1); |
844 | } |
|
|
845 | |
1400 | |
|
|
1401 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1402 | } |
|
|
1403 | |
846 | void |
1404 | void |
847 | ev_periodic_stop (struct ev_periodic *w) |
1405 | ev_periodic_stop (EV_P_ struct ev_periodic *w) |
848 | { |
1406 | { |
849 | ev_clear ((W)w); |
1407 | ev_clear_pending (EV_A_ (W)w); |
850 | if (!ev_is_active (w)) |
1408 | if (!ev_is_active (w)) |
851 | return; |
1409 | return; |
852 | |
1410 | |
|
|
1411 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1412 | |
853 | if (w->active < periodiccnt--) |
1413 | if (((W)w)->active < periodiccnt--) |
854 | { |
1414 | { |
855 | periodics [w->active - 1] = periodics [periodiccnt]; |
1415 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
856 | downheap ((WT *)periodics, periodiccnt, w->active - 1); |
1416 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
857 | } |
1417 | } |
858 | |
1418 | |
859 | ev_stop ((W)w); |
1419 | ev_stop (EV_A_ (W)w); |
860 | } |
1420 | } |
861 | |
1421 | |
862 | void |
1422 | void |
|
|
1423 | ev_periodic_again (EV_P_ struct ev_periodic *w) |
|
|
1424 | { |
|
|
1425 | /* TODO: use adjustheap and recalculation */ |
|
|
1426 | ev_periodic_stop (EV_A_ w); |
|
|
1427 | ev_periodic_start (EV_A_ w); |
|
|
1428 | } |
|
|
1429 | #endif |
|
|
1430 | |
|
|
1431 | void |
863 | ev_signal_start (struct ev_signal *w) |
1432 | ev_idle_start (EV_P_ struct ev_idle *w) |
864 | { |
1433 | { |
865 | if (ev_is_active (w)) |
1434 | if (ev_is_active (w)) |
866 | return; |
1435 | return; |
867 | |
1436 | |
|
|
1437 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1438 | array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void)); |
|
|
1439 | idles [idlecnt - 1] = w; |
|
|
1440 | } |
|
|
1441 | |
|
|
1442 | void |
|
|
1443 | ev_idle_stop (EV_P_ struct ev_idle *w) |
|
|
1444 | { |
|
|
1445 | ev_clear_pending (EV_A_ (W)w); |
|
|
1446 | if (!ev_is_active (w)) |
|
|
1447 | return; |
|
|
1448 | |
|
|
1449 | idles [((W)w)->active - 1] = idles [--idlecnt]; |
|
|
1450 | ev_stop (EV_A_ (W)w); |
|
|
1451 | } |
|
|
1452 | |
|
|
1453 | void |
|
|
1454 | ev_prepare_start (EV_P_ struct ev_prepare *w) |
|
|
1455 | { |
|
|
1456 | if (ev_is_active (w)) |
|
|
1457 | return; |
|
|
1458 | |
|
|
1459 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1460 | array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void)); |
|
|
1461 | prepares [preparecnt - 1] = w; |
|
|
1462 | } |
|
|
1463 | |
|
|
1464 | void |
|
|
1465 | ev_prepare_stop (EV_P_ struct ev_prepare *w) |
|
|
1466 | { |
|
|
1467 | ev_clear_pending (EV_A_ (W)w); |
|
|
1468 | if (!ev_is_active (w)) |
|
|
1469 | return; |
|
|
1470 | |
|
|
1471 | prepares [((W)w)->active - 1] = prepares [--preparecnt]; |
|
|
1472 | ev_stop (EV_A_ (W)w); |
|
|
1473 | } |
|
|
1474 | |
|
|
1475 | void |
|
|
1476 | ev_check_start (EV_P_ struct ev_check *w) |
|
|
1477 | { |
|
|
1478 | if (ev_is_active (w)) |
|
|
1479 | return; |
|
|
1480 | |
|
|
1481 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1482 | array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void)); |
|
|
1483 | checks [checkcnt - 1] = w; |
|
|
1484 | } |
|
|
1485 | |
|
|
1486 | void |
|
|
1487 | ev_check_stop (EV_P_ struct ev_check *w) |
|
|
1488 | { |
|
|
1489 | ev_clear_pending (EV_A_ (W)w); |
|
|
1490 | if (!ev_is_active (w)) |
|
|
1491 | return; |
|
|
1492 | |
|
|
1493 | checks [((W)w)->active - 1] = checks [--checkcnt]; |
|
|
1494 | ev_stop (EV_A_ (W)w); |
|
|
1495 | } |
|
|
1496 | |
|
|
1497 | #ifndef SA_RESTART |
|
|
1498 | # define SA_RESTART 0 |
|
|
1499 | #endif |
|
|
1500 | |
|
|
1501 | void |
|
|
1502 | ev_signal_start (EV_P_ struct ev_signal *w) |
|
|
1503 | { |
|
|
1504 | #if EV_MULTIPLICITY |
|
|
1505 | assert (("signal watchers are only supported in the default loop", loop == default_loop)); |
|
|
1506 | #endif |
|
|
1507 | if (ev_is_active (w)) |
|
|
1508 | return; |
|
|
1509 | |
|
|
1510 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1511 | |
868 | ev_start ((W)w, 1); |
1512 | ev_start (EV_A_ (W)w, 1); |
869 | array_needsize (signals, signalmax, w->signum, signals_init); |
1513 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
870 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
1514 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
871 | |
1515 | |
872 | if (!w->next) |
1516 | if (!((WL)w)->next) |
873 | { |
1517 | { |
|
|
1518 | #if _WIN32 |
|
|
1519 | signal (w->signum, sighandler); |
|
|
1520 | #else |
874 | struct sigaction sa; |
1521 | struct sigaction sa; |
875 | sa.sa_handler = sighandler; |
1522 | sa.sa_handler = sighandler; |
876 | sigfillset (&sa.sa_mask); |
1523 | sigfillset (&sa.sa_mask); |
877 | sa.sa_flags = 0; |
1524 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
878 | sigaction (w->signum, &sa, 0); |
1525 | sigaction (w->signum, &sa, 0); |
|
|
1526 | #endif |
879 | } |
1527 | } |
880 | } |
1528 | } |
881 | |
1529 | |
882 | void |
1530 | void |
883 | ev_signal_stop (struct ev_signal *w) |
1531 | ev_signal_stop (EV_P_ struct ev_signal *w) |
884 | { |
1532 | { |
885 | ev_clear ((W)w); |
1533 | ev_clear_pending (EV_A_ (W)w); |
886 | if (!ev_is_active (w)) |
1534 | if (!ev_is_active (w)) |
887 | return; |
1535 | return; |
888 | |
1536 | |
889 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
1537 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
890 | ev_stop ((W)w); |
1538 | ev_stop (EV_A_ (W)w); |
891 | |
1539 | |
892 | if (!signals [w->signum - 1].head) |
1540 | if (!signals [w->signum - 1].head) |
893 | signal (w->signum, SIG_DFL); |
1541 | signal (w->signum, SIG_DFL); |
894 | } |
1542 | } |
895 | |
1543 | |
896 | void |
1544 | void |
897 | ev_idle_start (struct ev_idle *w) |
1545 | ev_child_start (EV_P_ struct ev_child *w) |
898 | { |
1546 | { |
|
|
1547 | #if EV_MULTIPLICITY |
|
|
1548 | assert (("child watchers are only supported in the default loop", loop == default_loop)); |
|
|
1549 | #endif |
899 | if (ev_is_active (w)) |
1550 | if (ev_is_active (w)) |
900 | return; |
1551 | return; |
901 | |
1552 | |
902 | ev_start ((W)w, ++idlecnt); |
|
|
903 | array_needsize (idles, idlemax, idlecnt, ); |
|
|
904 | idles [idlecnt - 1] = w; |
|
|
905 | } |
|
|
906 | |
|
|
907 | void |
|
|
908 | ev_idle_stop (struct ev_idle *w) |
|
|
909 | { |
|
|
910 | ev_clear ((W)w); |
|
|
911 | if (ev_is_active (w)) |
|
|
912 | return; |
|
|
913 | |
|
|
914 | idles [w->active - 1] = idles [--idlecnt]; |
|
|
915 | ev_stop ((W)w); |
|
|
916 | } |
|
|
917 | |
|
|
918 | void |
|
|
919 | ev_prepare_start (struct ev_prepare *w) |
|
|
920 | { |
|
|
921 | if (ev_is_active (w)) |
|
|
922 | return; |
|
|
923 | |
|
|
924 | ev_start ((W)w, ++preparecnt); |
|
|
925 | array_needsize (prepares, preparemax, preparecnt, ); |
|
|
926 | prepares [preparecnt - 1] = w; |
|
|
927 | } |
|
|
928 | |
|
|
929 | void |
|
|
930 | ev_prepare_stop (struct ev_prepare *w) |
|
|
931 | { |
|
|
932 | ev_clear ((W)w); |
|
|
933 | if (ev_is_active (w)) |
|
|
934 | return; |
|
|
935 | |
|
|
936 | prepares [w->active - 1] = prepares [--preparecnt]; |
|
|
937 | ev_stop ((W)w); |
|
|
938 | } |
|
|
939 | |
|
|
940 | void |
|
|
941 | ev_check_start (struct ev_check *w) |
|
|
942 | { |
|
|
943 | if (ev_is_active (w)) |
|
|
944 | return; |
|
|
945 | |
|
|
946 | ev_start ((W)w, ++checkcnt); |
|
|
947 | array_needsize (checks, checkmax, checkcnt, ); |
|
|
948 | checks [checkcnt - 1] = w; |
|
|
949 | } |
|
|
950 | |
|
|
951 | void |
|
|
952 | ev_check_stop (struct ev_check *w) |
|
|
953 | { |
|
|
954 | ev_clear ((W)w); |
|
|
955 | if (ev_is_active (w)) |
|
|
956 | return; |
|
|
957 | |
|
|
958 | checks [w->active - 1] = checks [--checkcnt]; |
|
|
959 | ev_stop ((W)w); |
|
|
960 | } |
|
|
961 | |
|
|
962 | void |
|
|
963 | ev_child_start (struct ev_child *w) |
|
|
964 | { |
|
|
965 | if (ev_is_active (w)) |
|
|
966 | return; |
|
|
967 | |
|
|
968 | ev_start ((W)w, 1); |
1553 | ev_start (EV_A_ (W)w, 1); |
969 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1554 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
970 | } |
1555 | } |
971 | |
1556 | |
972 | void |
1557 | void |
973 | ev_child_stop (struct ev_child *w) |
1558 | ev_child_stop (EV_P_ struct ev_child *w) |
974 | { |
1559 | { |
975 | ev_clear ((W)w); |
1560 | ev_clear_pending (EV_A_ (W)w); |
976 | if (ev_is_active (w)) |
1561 | if (!ev_is_active (w)) |
977 | return; |
1562 | return; |
978 | |
1563 | |
979 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
1564 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
980 | ev_stop ((W)w); |
1565 | ev_stop (EV_A_ (W)w); |
981 | } |
1566 | } |
982 | |
1567 | |
983 | /*****************************************************************************/ |
1568 | /*****************************************************************************/ |
984 | |
1569 | |
985 | struct ev_once |
1570 | struct ev_once |
… | |
… | |
989 | void (*cb)(int revents, void *arg); |
1574 | void (*cb)(int revents, void *arg); |
990 | void *arg; |
1575 | void *arg; |
991 | }; |
1576 | }; |
992 | |
1577 | |
993 | static void |
1578 | static void |
994 | once_cb (struct ev_once *once, int revents) |
1579 | once_cb (EV_P_ struct ev_once *once, int revents) |
995 | { |
1580 | { |
996 | void (*cb)(int revents, void *arg) = once->cb; |
1581 | void (*cb)(int revents, void *arg) = once->cb; |
997 | void *arg = once->arg; |
1582 | void *arg = once->arg; |
998 | |
1583 | |
999 | ev_io_stop (&once->io); |
1584 | ev_io_stop (EV_A_ &once->io); |
1000 | ev_timer_stop (&once->to); |
1585 | ev_timer_stop (EV_A_ &once->to); |
1001 | free (once); |
1586 | ev_free (once); |
1002 | |
1587 | |
1003 | cb (revents, arg); |
1588 | cb (revents, arg); |
1004 | } |
1589 | } |
1005 | |
1590 | |
1006 | static void |
1591 | static void |
1007 | once_cb_io (struct ev_io *w, int revents) |
1592 | once_cb_io (EV_P_ struct ev_io *w, int revents) |
1008 | { |
1593 | { |
1009 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1594 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
1010 | } |
1595 | } |
1011 | |
1596 | |
1012 | static void |
1597 | static void |
1013 | once_cb_to (struct ev_timer *w, int revents) |
1598 | once_cb_to (EV_P_ struct ev_timer *w, int revents) |
1014 | { |
1599 | { |
1015 | once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1600 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
1016 | } |
1601 | } |
1017 | |
1602 | |
1018 | void |
1603 | void |
1019 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1604 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1020 | { |
1605 | { |
1021 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1606 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
1022 | |
1607 | |
1023 | if (!once) |
1608 | if (!once) |
1024 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1609 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1025 | else |
1610 | else |
1026 | { |
1611 | { |
1027 | once->cb = cb; |
1612 | once->cb = cb; |
1028 | once->arg = arg; |
1613 | once->arg = arg; |
1029 | |
1614 | |
1030 | ev_watcher_init (&once->io, once_cb_io); |
1615 | ev_init (&once->io, once_cb_io); |
1031 | if (fd >= 0) |
1616 | if (fd >= 0) |
1032 | { |
1617 | { |
1033 | ev_io_set (&once->io, fd, events); |
1618 | ev_io_set (&once->io, fd, events); |
1034 | ev_io_start (&once->io); |
1619 | ev_io_start (EV_A_ &once->io); |
1035 | } |
1620 | } |
1036 | |
1621 | |
1037 | ev_watcher_init (&once->to, once_cb_to); |
1622 | ev_init (&once->to, once_cb_to); |
1038 | if (timeout >= 0.) |
1623 | if (timeout >= 0.) |
1039 | { |
1624 | { |
1040 | ev_timer_set (&once->to, timeout, 0.); |
1625 | ev_timer_set (&once->to, timeout, 0.); |
1041 | ev_timer_start (&once->to); |
1626 | ev_timer_start (EV_A_ &once->to); |
1042 | } |
1627 | } |
1043 | } |
1628 | } |
1044 | } |
1629 | } |
1045 | |
1630 | |
1046 | /*****************************************************************************/ |
1631 | #ifdef __cplusplus |
1047 | |
|
|
1048 | #if 0 |
|
|
1049 | |
|
|
1050 | struct ev_io wio; |
|
|
1051 | |
|
|
1052 | static void |
|
|
1053 | sin_cb (struct ev_io *w, int revents) |
|
|
1054 | { |
|
|
1055 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
|
|
1056 | } |
1632 | } |
1057 | |
|
|
1058 | static void |
|
|
1059 | ocb (struct ev_timer *w, int revents) |
|
|
1060 | { |
|
|
1061 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
|
|
1062 | ev_timer_stop (w); |
|
|
1063 | ev_timer_start (w); |
|
|
1064 | } |
|
|
1065 | |
|
|
1066 | static void |
|
|
1067 | scb (struct ev_signal *w, int revents) |
|
|
1068 | { |
|
|
1069 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
|
|
1070 | ev_io_stop (&wio); |
|
|
1071 | ev_io_start (&wio); |
|
|
1072 | } |
|
|
1073 | |
|
|
1074 | static void |
|
|
1075 | gcb (struct ev_signal *w, int revents) |
|
|
1076 | { |
|
|
1077 | fprintf (stderr, "generic %x\n", revents); |
|
|
1078 | |
|
|
1079 | } |
|
|
1080 | |
|
|
1081 | int main (void) |
|
|
1082 | { |
|
|
1083 | ev_init (0); |
|
|
1084 | |
|
|
1085 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
|
|
1086 | ev_io_start (&wio); |
|
|
1087 | |
|
|
1088 | struct ev_timer t[10000]; |
|
|
1089 | |
|
|
1090 | #if 0 |
|
|
1091 | int i; |
|
|
1092 | for (i = 0; i < 10000; ++i) |
|
|
1093 | { |
|
|
1094 | struct ev_timer *w = t + i; |
|
|
1095 | ev_watcher_init (w, ocb, i); |
|
|
1096 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
|
|
1097 | ev_timer_start (w); |
|
|
1098 | if (drand48 () < 0.5) |
|
|
1099 | ev_timer_stop (w); |
|
|
1100 | } |
|
|
1101 | #endif |
1633 | #endif |
1102 | |
1634 | |
1103 | struct ev_timer t1; |
|
|
1104 | ev_timer_init (&t1, ocb, 5, 10); |
|
|
1105 | ev_timer_start (&t1); |
|
|
1106 | |
|
|
1107 | struct ev_signal sig; |
|
|
1108 | ev_signal_init (&sig, scb, SIGQUIT); |
|
|
1109 | ev_signal_start (&sig); |
|
|
1110 | |
|
|
1111 | struct ev_check cw; |
|
|
1112 | ev_check_init (&cw, gcb); |
|
|
1113 | ev_check_start (&cw); |
|
|
1114 | |
|
|
1115 | struct ev_idle iw; |
|
|
1116 | ev_idle_init (&iw, gcb); |
|
|
1117 | ev_idle_start (&iw); |
|
|
1118 | |
|
|
1119 | ev_loop (0); |
|
|
1120 | |
|
|
1121 | return 0; |
|
|
1122 | } |
|
|
1123 | |
|
|
1124 | #endif |
|
|
1125 | |
|
|
1126 | |
|
|
1127 | |
|
|
1128 | |
|
|