1 | /* |
1 | /* |
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2 | * libev event processing core, watcher management |
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3 | * |
2 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
3 | * All rights reserved. |
5 | * All rights reserved. |
4 | * |
6 | * |
5 | * Redistribution and use in source and binary forms, with or without |
7 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions are |
8 | * modification, are permitted provided that the following conditions are |
… | |
… | |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
30 | */ |
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31 | #if EV_USE_CONFIG_H |
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32 | # include "config.h" |
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33 | #endif |
29 | |
34 | |
30 | #include <math.h> |
35 | #include <math.h> |
31 | #include <stdlib.h> |
36 | #include <stdlib.h> |
32 | #include <unistd.h> |
37 | #include <unistd.h> |
33 | #include <fcntl.h> |
38 | #include <fcntl.h> |
… | |
… | |
41 | #include <sys/types.h> |
46 | #include <sys/types.h> |
42 | #include <sys/wait.h> |
47 | #include <sys/wait.h> |
43 | #include <sys/time.h> |
48 | #include <sys/time.h> |
44 | #include <time.h> |
49 | #include <time.h> |
45 | |
50 | |
46 | #ifndef HAVE_MONOTONIC |
51 | #ifndef EV_USE_MONOTONIC |
47 | # ifdef CLOCK_MONOTONIC |
52 | # ifdef CLOCK_MONOTONIC |
48 | # define HAVE_MONOTONIC 1 |
53 | # define EV_USE_MONOTONIC 1 |
49 | # endif |
54 | # endif |
50 | #endif |
55 | #endif |
51 | |
56 | |
52 | #ifndef HAVE_SELECT |
57 | #ifndef EV_USE_SELECT |
53 | # define HAVE_SELECT 1 |
58 | # define EV_USE_SELECT 1 |
54 | #endif |
59 | #endif |
55 | |
60 | |
56 | #ifndef HAVE_EPOLL |
61 | #ifndef EV_USE_EPOLL |
57 | # define HAVE_EPOLL 0 |
62 | # define EV_USE_EPOLL 0 |
58 | #endif |
63 | #endif |
59 | |
64 | |
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65 | #ifndef CLOCK_REALTIME |
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66 | # define EV_USE_REALTIME 0 |
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67 | #endif |
60 | #ifndef HAVE_REALTIME |
68 | #ifndef EV_USE_REALTIME |
61 | # define HAVE_REALTIME 1 /* posix requirement, but might be slower */ |
69 | # define EV_USE_REALTIME 1 /* posix requirement, but might be slower */ |
62 | #endif |
70 | #endif |
63 | |
71 | |
64 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
72 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
65 | #define MAX_BLOCKTIME 60. |
73 | #define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */ |
66 | #define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */ |
74 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
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75 | #define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
67 | |
76 | |
68 | #include "ev.h" |
77 | #include "ev.h" |
69 | |
78 | |
70 | typedef struct ev_watcher *W; |
79 | typedef struct ev_watcher *W; |
71 | typedef struct ev_watcher_list *WL; |
80 | typedef struct ev_watcher_list *WL; |
… | |
… | |
84 | /*****************************************************************************/ |
93 | /*****************************************************************************/ |
85 | |
94 | |
86 | ev_tstamp |
95 | ev_tstamp |
87 | ev_time (void) |
96 | ev_time (void) |
88 | { |
97 | { |
89 | #if HAVE_REALTIME |
98 | #if EV_USE_REALTIME |
90 | struct timespec ts; |
99 | struct timespec ts; |
91 | clock_gettime (CLOCK_REALTIME, &ts); |
100 | clock_gettime (CLOCK_REALTIME, &ts); |
92 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
101 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
93 | #else |
102 | #else |
94 | struct timeval tv; |
103 | struct timeval tv; |
… | |
… | |
98 | } |
107 | } |
99 | |
108 | |
100 | static ev_tstamp |
109 | static ev_tstamp |
101 | get_clock (void) |
110 | get_clock (void) |
102 | { |
111 | { |
103 | #if HAVE_MONOTONIC |
112 | #if EV_USE_MONOTONIC |
104 | if (have_monotonic) |
113 | if (have_monotonic) |
105 | { |
114 | { |
106 | struct timespec ts; |
115 | struct timespec ts; |
107 | clock_gettime (CLOCK_MONOTONIC, &ts); |
116 | clock_gettime (CLOCK_MONOTONIC, &ts); |
108 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
117 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
109 | } |
118 | } |
110 | #endif |
119 | #endif |
111 | |
120 | |
112 | return ev_time (); |
121 | return ev_time (); |
113 | } |
122 | } |
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123 | |
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124 | #define array_roundsize(base,n) ((n) | 4 & ~3) |
114 | |
125 | |
115 | #define array_needsize(base,cur,cnt,init) \ |
126 | #define array_needsize(base,cur,cnt,init) \ |
116 | if ((cnt) > cur) \ |
127 | if ((cnt) > cur) \ |
117 | { \ |
128 | { \ |
118 | int newcnt = cur; \ |
129 | int newcnt = cur; \ |
119 | do \ |
130 | do \ |
120 | { \ |
131 | { \ |
121 | newcnt = (newcnt << 1) | 4 & ~3; \ |
132 | newcnt = array_roundsize (base, newcnt << 1); \ |
122 | } \ |
133 | } \ |
123 | while ((cnt) > newcnt); \ |
134 | while ((cnt) > newcnt); \ |
124 | \ |
135 | \ |
125 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
136 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
126 | init (base + cur, newcnt - cur); \ |
137 | init (base + cur, newcnt - cur); \ |
… | |
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130 | /*****************************************************************************/ |
141 | /*****************************************************************************/ |
131 | |
142 | |
132 | typedef struct |
143 | typedef struct |
133 | { |
144 | { |
134 | struct ev_io *head; |
145 | struct ev_io *head; |
135 | unsigned char wev, rev; /* want, received event set */ |
146 | unsigned char events; |
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147 | unsigned char reify; |
136 | } ANFD; |
148 | } ANFD; |
137 | |
149 | |
138 | static ANFD *anfds; |
150 | static ANFD *anfds; |
139 | static int anfdmax; |
151 | static int anfdmax; |
140 | |
152 | |
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 |
153 | static void |
145 | anfds_init (ANFD *base, int count) |
154 | anfds_init (ANFD *base, int count) |
146 | { |
155 | { |
147 | while (count--) |
156 | while (count--) |
148 | { |
157 | { |
149 | base->head = 0; |
158 | base->head = 0; |
150 | base->wev = base->rev = EV_NONE; |
159 | base->events = EV_NONE; |
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160 | base->reify = 0; |
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161 | |
151 | ++base; |
162 | ++base; |
152 | } |
163 | } |
153 | } |
164 | } |
154 | |
165 | |
155 | typedef struct |
166 | typedef struct |
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162 | static int pendingmax, pendingcnt; |
173 | static int pendingmax, pendingcnt; |
163 | |
174 | |
164 | static void |
175 | static void |
165 | event (W w, int events) |
176 | event (W w, int events) |
166 | { |
177 | { |
167 | if (w->active) |
178 | if (w->pending) |
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179 | { |
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180 | pendings [w->pending - 1].events |= events; |
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181 | return; |
168 | { |
182 | } |
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183 | |
169 | w->pending = ++pendingcnt; |
184 | w->pending = ++pendingcnt; |
170 | array_needsize (pendings, pendingmax, pendingcnt, ); |
185 | array_needsize (pendings, pendingmax, pendingcnt, ); |
171 | pendings [pendingcnt - 1].w = w; |
186 | pendings [pendingcnt - 1].w = w; |
172 | pendings [pendingcnt - 1].events = events; |
187 | pendings [pendingcnt - 1].events = events; |
173 | } |
188 | } |
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189 | |
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190 | static void |
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191 | queue_events (W *events, int eventcnt, int type) |
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192 | { |
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193 | int i; |
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194 | |
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195 | for (i = 0; i < eventcnt; ++i) |
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196 | event (events [i], type); |
174 | } |
197 | } |
175 | |
198 | |
176 | static void |
199 | static void |
177 | fd_event (int fd, int events) |
200 | fd_event (int fd, int events) |
178 | { |
201 | { |
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186 | if (ev) |
209 | if (ev) |
187 | event ((W)w, ev); |
210 | event ((W)w, ev); |
188 | } |
211 | } |
189 | } |
212 | } |
190 | |
213 | |
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214 | /*****************************************************************************/ |
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215 | |
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216 | static int *fdchanges; |
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217 | static int fdchangemax, fdchangecnt; |
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218 | |
191 | static void |
219 | static void |
192 | queue_events (W *events, int eventcnt, int type) |
220 | fd_reify (void) |
193 | { |
221 | { |
194 | int i; |
222 | int i; |
195 | |
223 | |
196 | for (i = 0; i < eventcnt; ++i) |
224 | for (i = 0; i < fdchangecnt; ++i) |
197 | event (events [i], type); |
225 | { |
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226 | int fd = fdchanges [i]; |
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227 | ANFD *anfd = anfds + fd; |
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228 | struct ev_io *w; |
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229 | |
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230 | int events = 0; |
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231 | |
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232 | for (w = anfd->head; w; w = w->next) |
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233 | events |= w->events; |
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234 | |
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235 | anfd->reify = 0; |
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236 | |
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237 | if (anfd->events != events) |
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238 | { |
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239 | method_modify (fd, anfd->events, events); |
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240 | anfd->events = events; |
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241 | } |
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242 | } |
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243 | |
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244 | fdchangecnt = 0; |
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245 | } |
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246 | |
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247 | static void |
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248 | fd_change (int fd) |
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249 | { |
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250 | if (anfds [fd].reify || fdchangecnt < 0) |
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251 | return; |
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252 | |
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253 | anfds [fd].reify = 1; |
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254 | |
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255 | ++fdchangecnt; |
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256 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
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257 | fdchanges [fdchangecnt - 1] = fd; |
198 | } |
258 | } |
199 | |
259 | |
200 | /* called on EBADF to verify fds */ |
260 | /* called on EBADF to verify fds */ |
201 | static void |
261 | static void |
202 | fd_recheck (void) |
262 | fd_recheck (void) |
203 | { |
263 | { |
204 | int fd; |
264 | int fd; |
205 | |
265 | |
206 | for (fd = 0; fd < anfdmax; ++fd) |
266 | for (fd = 0; fd < anfdmax; ++fd) |
207 | if (anfds [fd].wev) |
267 | if (anfds [fd].events) |
208 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
268 | if (fcntl (fd, F_GETFD) == -1 && errno == EBADF) |
209 | while (anfds [fd].head) |
269 | while (anfds [fd].head) |
210 | { |
270 | { |
211 | event ((W)anfds [fd].head, EV_ERROR); |
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212 | evio_stop (anfds [fd].head); |
271 | ev_io_stop (anfds [fd].head); |
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272 | event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE); |
213 | } |
273 | } |
214 | } |
274 | } |
215 | |
275 | |
216 | /*****************************************************************************/ |
276 | /*****************************************************************************/ |
217 | |
277 | |
… | |
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265 | /*****************************************************************************/ |
325 | /*****************************************************************************/ |
266 | |
326 | |
267 | typedef struct |
327 | typedef struct |
268 | { |
328 | { |
269 | struct ev_signal *head; |
329 | struct ev_signal *head; |
270 | sig_atomic_t gotsig; |
330 | sig_atomic_t volatile gotsig; |
271 | } ANSIG; |
331 | } ANSIG; |
272 | |
332 | |
273 | static ANSIG *signals; |
333 | static ANSIG *signals; |
274 | static int signalmax; |
334 | static int signalmax; |
275 | |
335 | |
276 | static int sigpipe [2]; |
336 | static int sigpipe [2]; |
277 | static sig_atomic_t gotsig; |
337 | static sig_atomic_t volatile gotsig; |
278 | static struct ev_io sigev; |
338 | static struct ev_io sigev; |
279 | |
339 | |
280 | static void |
340 | static void |
281 | signals_init (ANSIG *base, int count) |
341 | signals_init (ANSIG *base, int count) |
282 | { |
342 | { |
283 | while (count--) |
343 | while (count--) |
284 | { |
344 | { |
285 | base->head = 0; |
345 | base->head = 0; |
286 | base->gotsig = 0; |
346 | base->gotsig = 0; |
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347 | |
287 | ++base; |
348 | ++base; |
288 | } |
349 | } |
289 | } |
350 | } |
290 | |
351 | |
291 | static void |
352 | static void |
… | |
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294 | signals [signum - 1].gotsig = 1; |
355 | signals [signum - 1].gotsig = 1; |
295 | |
356 | |
296 | if (!gotsig) |
357 | if (!gotsig) |
297 | { |
358 | { |
298 | gotsig = 1; |
359 | gotsig = 1; |
299 | write (sigpipe [1], &gotsig, 1); |
360 | write (sigpipe [1], &signum, 1); |
300 | } |
361 | } |
301 | } |
362 | } |
302 | |
363 | |
303 | static void |
364 | static void |
304 | sigcb (struct ev_io *iow, int revents) |
365 | sigcb (struct ev_io *iow, int revents) |
305 | { |
366 | { |
306 | struct ev_signal *w; |
367 | struct ev_signal *w; |
307 | int sig; |
368 | int sig; |
308 | |
369 | |
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370 | read (sigpipe [0], &revents, 1); |
309 | gotsig = 0; |
371 | gotsig = 0; |
310 | read (sigpipe [0], &revents, 1); |
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311 | |
372 | |
312 | for (sig = signalmax; sig--; ) |
373 | for (sig = signalmax; sig--; ) |
313 | if (signals [sig].gotsig) |
374 | if (signals [sig].gotsig) |
314 | { |
375 | { |
315 | signals [sig].gotsig = 0; |
376 | signals [sig].gotsig = 0; |
… | |
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327 | |
388 | |
328 | /* rather than sort out wether we really need nb, set it */ |
389 | /* rather than sort out wether we really need nb, set it */ |
329 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
390 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
330 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
391 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
331 | |
392 | |
332 | evio_set (&sigev, sigpipe [0], EV_READ); |
393 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
333 | evio_start (&sigev); |
394 | ev_io_start (&sigev); |
334 | } |
395 | } |
335 | |
396 | |
336 | /*****************************************************************************/ |
397 | /*****************************************************************************/ |
337 | |
398 | |
338 | static struct ev_idle **idles; |
399 | static struct ev_idle **idles; |
… | |
… | |
368 | } |
429 | } |
369 | } |
430 | } |
370 | |
431 | |
371 | /*****************************************************************************/ |
432 | /*****************************************************************************/ |
372 | |
433 | |
373 | #if HAVE_EPOLL |
434 | #if EV_USE_EPOLL |
374 | # include "ev_epoll.c" |
435 | # include "ev_epoll.c" |
375 | #endif |
436 | #endif |
376 | #if HAVE_SELECT |
437 | #if EV_USE_SELECT |
377 | # include "ev_select.c" |
438 | # include "ev_select.c" |
378 | #endif |
439 | #endif |
379 | |
440 | |
380 | int |
441 | int |
381 | ev_version_major (void) |
442 | ev_version_major (void) |
… | |
… | |
391 | |
452 | |
392 | int ev_init (int flags) |
453 | int ev_init (int flags) |
393 | { |
454 | { |
394 | if (!ev_method) |
455 | if (!ev_method) |
395 | { |
456 | { |
396 | #if HAVE_MONOTONIC |
457 | #if EV_USE_MONOTONIC |
397 | { |
458 | { |
398 | struct timespec ts; |
459 | struct timespec ts; |
399 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
460 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
400 | have_monotonic = 1; |
461 | have_monotonic = 1; |
401 | } |
462 | } |
… | |
… | |
407 | |
468 | |
408 | if (pipe (sigpipe)) |
469 | if (pipe (sigpipe)) |
409 | return 0; |
470 | return 0; |
410 | |
471 | |
411 | ev_method = EVMETHOD_NONE; |
472 | ev_method = EVMETHOD_NONE; |
412 | #if HAVE_EPOLL |
473 | #if EV_USE_EPOLL |
413 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
474 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
414 | #endif |
475 | #endif |
415 | #if HAVE_SELECT |
476 | #if EV_USE_SELECT |
416 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
477 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
417 | #endif |
478 | #endif |
418 | |
479 | |
419 | if (ev_method) |
480 | if (ev_method) |
420 | { |
481 | { |
421 | evw_init (&sigev, sigcb); |
482 | ev_watcher_init (&sigev, sigcb); |
422 | siginit (); |
483 | siginit (); |
423 | |
484 | |
424 | evsignal_init (&childev, childcb, SIGCHLD); |
485 | ev_signal_init (&childev, childcb, SIGCHLD); |
425 | evsignal_start (&childev); |
486 | ev_signal_start (&childev); |
426 | } |
487 | } |
427 | } |
488 | } |
428 | |
489 | |
429 | return ev_method; |
490 | return ev_method; |
430 | } |
491 | } |
431 | |
492 | |
432 | /*****************************************************************************/ |
493 | /*****************************************************************************/ |
433 | |
494 | |
434 | void |
495 | void |
435 | ev_prefork (void) |
496 | ev_fork_prepare (void) |
436 | { |
497 | { |
437 | /* nop */ |
498 | /* nop */ |
438 | } |
499 | } |
439 | |
500 | |
440 | void |
501 | void |
441 | ev_postfork_parent (void) |
502 | ev_fork_parent (void) |
442 | { |
503 | { |
443 | /* nop */ |
504 | /* nop */ |
444 | } |
505 | } |
445 | |
506 | |
446 | void |
507 | void |
447 | ev_postfork_child (void) |
508 | ev_fork_child (void) |
448 | { |
509 | { |
449 | #if HAVE_EPOLL |
510 | #if EV_USE_EPOLL |
450 | if (ev_method == EVMETHOD_EPOLL) |
511 | if (ev_method == EVMETHOD_EPOLL) |
451 | epoll_postfork_child (); |
512 | epoll_postfork_child (); |
452 | #endif |
513 | #endif |
453 | |
514 | |
454 | evio_stop (&sigev); |
515 | ev_io_stop (&sigev); |
455 | close (sigpipe [0]); |
516 | close (sigpipe [0]); |
456 | close (sigpipe [1]); |
517 | close (sigpipe [1]); |
457 | pipe (sigpipe); |
518 | pipe (sigpipe); |
458 | siginit (); |
519 | siginit (); |
459 | } |
520 | } |
460 | |
521 | |
461 | /*****************************************************************************/ |
522 | /*****************************************************************************/ |
462 | |
523 | |
463 | static void |
524 | static void |
464 | fd_reify (void) |
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465 | { |
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466 | int i; |
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467 | |
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468 | for (i = 0; i < fdchangecnt; ++i) |
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469 | { |
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470 | int fd = fdchanges [i]; |
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471 | ANFD *anfd = anfds + fd; |
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472 | struct ev_io *w; |
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473 | |
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474 | int wev = 0; |
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475 | |
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476 | for (w = anfd->head; w; w = w->next) |
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477 | wev |= w->events; |
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478 | |
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479 | if (anfd->wev != wev) |
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480 | { |
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481 | method_modify (fd, anfd->wev, wev); |
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482 | anfd->wev = wev; |
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483 | } |
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484 | } |
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485 | |
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486 | fdchangecnt = 0; |
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487 | } |
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488 | |
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489 | static void |
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490 | call_pending (void) |
525 | call_pending (void) |
491 | { |
526 | { |
492 | while (pendingcnt) |
527 | while (pendingcnt) |
493 | { |
528 | { |
494 | ANPENDING *p = pendings + --pendingcnt; |
529 | ANPENDING *p = pendings + --pendingcnt; |
… | |
… | |
506 | { |
541 | { |
507 | while (timercnt && timers [0]->at <= now) |
542 | while (timercnt && timers [0]->at <= now) |
508 | { |
543 | { |
509 | struct ev_timer *w = timers [0]; |
544 | struct ev_timer *w = timers [0]; |
510 | |
545 | |
511 | event ((W)w, EV_TIMEOUT); |
|
|
512 | |
|
|
513 | /* first reschedule or stop timer */ |
546 | /* first reschedule or stop timer */ |
514 | if (w->repeat) |
547 | if (w->repeat) |
515 | { |
548 | { |
|
|
549 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
516 | w->at = now + w->repeat; |
550 | w->at = now + w->repeat; |
517 | assert (("timer timeout in the past, negative repeat?", w->at > now)); |
|
|
518 | downheap ((WT *)timers, timercnt, 0); |
551 | downheap ((WT *)timers, timercnt, 0); |
519 | } |
552 | } |
520 | else |
553 | else |
521 | evtimer_stop (w); /* nonrepeating: stop timer */ |
554 | ev_timer_stop (w); /* nonrepeating: stop timer */ |
|
|
555 | |
|
|
556 | event ((W)w, EV_TIMEOUT); |
522 | } |
557 | } |
523 | } |
558 | } |
524 | |
559 | |
525 | static void |
560 | static void |
526 | periodics_reify (void) |
561 | periodics_reify (void) |
… | |
… | |
531 | |
566 | |
532 | /* first reschedule or stop timer */ |
567 | /* first reschedule or stop timer */ |
533 | if (w->interval) |
568 | if (w->interval) |
534 | { |
569 | { |
535 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
570 | w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval; |
536 | assert (("periodic timeout in the past, negative interval?", w->at > ev_now)); |
571 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now)); |
537 | downheap ((WT *)periodics, periodiccnt, 0); |
572 | downheap ((WT *)periodics, periodiccnt, 0); |
538 | } |
573 | } |
539 | else |
574 | else |
540 | evperiodic_stop (w); /* nonrepeating: stop timer */ |
575 | ev_periodic_stop (w); /* nonrepeating: stop timer */ |
541 | |
576 | |
542 | event ((W)w, EV_TIMEOUT); |
577 | event ((W)w, EV_PERIODIC); |
543 | } |
578 | } |
544 | } |
579 | } |
545 | |
580 | |
546 | static void |
581 | static void |
547 | periodics_reschedule (ev_tstamp diff) |
582 | periodics_reschedule (ev_tstamp diff) |
… | |
… | |
557 | { |
592 | { |
558 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
593 | ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval; |
559 | |
594 | |
560 | if (fabs (diff) >= 1e-4) |
595 | if (fabs (diff) >= 1e-4) |
561 | { |
596 | { |
562 | evperiodic_stop (w); |
597 | ev_periodic_stop (w); |
563 | evperiodic_start (w); |
598 | ev_periodic_start (w); |
564 | |
599 | |
565 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
600 | i = 0; /* restart loop, inefficient, but time jumps should be rare */ |
566 | } |
601 | } |
567 | } |
602 | } |
568 | } |
603 | } |
… | |
… | |
611 | int ev_loop_done; |
646 | int ev_loop_done; |
612 | |
647 | |
613 | void ev_loop (int flags) |
648 | void ev_loop (int flags) |
614 | { |
649 | { |
615 | double block; |
650 | double block; |
616 | ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0; |
651 | ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0; |
617 | |
652 | |
618 | do |
653 | do |
619 | { |
654 | { |
620 | /* queue check watchers (and execute them) */ |
655 | /* queue check watchers (and execute them) */ |
621 | if (preparecnt) |
656 | if (preparecnt) |
… | |
… | |
702 | head = &(*head)->next; |
737 | head = &(*head)->next; |
703 | } |
738 | } |
704 | } |
739 | } |
705 | |
740 | |
706 | static void |
741 | static void |
707 | ev_clear (W w) |
742 | ev_clear_pending (W w) |
708 | { |
743 | { |
709 | if (w->pending) |
744 | if (w->pending) |
710 | { |
745 | { |
711 | pendings [w->pending - 1].w = 0; |
746 | pendings [w->pending - 1].w = 0; |
712 | w->pending = 0; |
747 | w->pending = 0; |
… | |
… | |
726 | } |
761 | } |
727 | |
762 | |
728 | /*****************************************************************************/ |
763 | /*****************************************************************************/ |
729 | |
764 | |
730 | void |
765 | void |
731 | evio_start (struct ev_io *w) |
766 | ev_io_start (struct ev_io *w) |
732 | { |
767 | { |
733 | if (ev_is_active (w)) |
768 | if (ev_is_active (w)) |
734 | return; |
769 | return; |
735 | |
770 | |
736 | int fd = w->fd; |
771 | int fd = w->fd; |
|
|
772 | |
|
|
773 | assert (("ev_io_start called with negative fd", fd >= 0)); |
737 | |
774 | |
738 | ev_start ((W)w, 1); |
775 | ev_start ((W)w, 1); |
739 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
776 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
740 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
777 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
741 | |
778 | |
742 | ++fdchangecnt; |
779 | fd_change (fd); |
743 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
744 | fdchanges [fdchangecnt - 1] = fd; |
|
|
745 | } |
780 | } |
746 | |
781 | |
747 | void |
782 | void |
748 | evio_stop (struct ev_io *w) |
783 | ev_io_stop (struct ev_io *w) |
749 | { |
784 | { |
750 | ev_clear ((W)w); |
785 | ev_clear_pending ((W)w); |
751 | if (!ev_is_active (w)) |
786 | if (!ev_is_active (w)) |
752 | return; |
787 | return; |
753 | |
788 | |
754 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
789 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
755 | ev_stop ((W)w); |
790 | ev_stop ((W)w); |
756 | |
791 | |
757 | ++fdchangecnt; |
792 | fd_change (w->fd); |
758 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
759 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
760 | } |
793 | } |
761 | |
794 | |
762 | void |
795 | void |
763 | evtimer_start (struct ev_timer *w) |
796 | ev_timer_start (struct ev_timer *w) |
764 | { |
797 | { |
765 | if (ev_is_active (w)) |
798 | if (ev_is_active (w)) |
766 | return; |
799 | return; |
767 | |
800 | |
768 | w->at += now; |
801 | w->at += now; |
769 | |
802 | |
770 | assert (("timer repeat value less than zero not allowed", w->repeat >= 0.)); |
803 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
771 | |
804 | |
772 | ev_start ((W)w, ++timercnt); |
805 | ev_start ((W)w, ++timercnt); |
773 | array_needsize (timers, timermax, timercnt, ); |
806 | array_needsize (timers, timermax, timercnt, ); |
774 | timers [timercnt - 1] = w; |
807 | timers [timercnt - 1] = w; |
775 | upheap ((WT *)timers, timercnt - 1); |
808 | upheap ((WT *)timers, timercnt - 1); |
776 | } |
809 | } |
777 | |
810 | |
778 | void |
811 | void |
779 | evtimer_stop (struct ev_timer *w) |
812 | ev_timer_stop (struct ev_timer *w) |
780 | { |
813 | { |
781 | ev_clear ((W)w); |
814 | ev_clear_pending ((W)w); |
782 | if (!ev_is_active (w)) |
815 | if (!ev_is_active (w)) |
783 | return; |
816 | return; |
784 | |
817 | |
785 | if (w->active < timercnt--) |
818 | if (w->active < timercnt--) |
786 | { |
819 | { |
… | |
… | |
792 | |
825 | |
793 | ev_stop ((W)w); |
826 | ev_stop ((W)w); |
794 | } |
827 | } |
795 | |
828 | |
796 | void |
829 | void |
797 | evtimer_again (struct ev_timer *w) |
830 | ev_timer_again (struct ev_timer *w) |
798 | { |
831 | { |
799 | if (ev_is_active (w)) |
832 | if (ev_is_active (w)) |
800 | { |
833 | { |
801 | if (w->repeat) |
834 | if (w->repeat) |
802 | { |
835 | { |
803 | w->at = now + w->repeat; |
836 | w->at = now + w->repeat; |
804 | downheap ((WT *)timers, timercnt, w->active - 1); |
837 | downheap ((WT *)timers, timercnt, w->active - 1); |
805 | } |
838 | } |
806 | else |
839 | else |
807 | evtimer_stop (w); |
840 | ev_timer_stop (w); |
808 | } |
841 | } |
809 | else if (w->repeat) |
842 | else if (w->repeat) |
810 | evtimer_start (w); |
843 | ev_timer_start (w); |
811 | } |
844 | } |
812 | |
845 | |
813 | void |
846 | void |
814 | evperiodic_start (struct ev_periodic *w) |
847 | ev_periodic_start (struct ev_periodic *w) |
815 | { |
848 | { |
816 | if (ev_is_active (w)) |
849 | if (ev_is_active (w)) |
817 | return; |
850 | return; |
818 | |
851 | |
819 | assert (("periodic interval value less than zero not allowed", w->interval >= 0.)); |
852 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
820 | |
853 | |
821 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
854 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
822 | if (w->interval) |
855 | if (w->interval) |
823 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
856 | w->at += ceil ((ev_now - w->at) / w->interval) * w->interval; |
824 | |
857 | |
… | |
… | |
827 | periodics [periodiccnt - 1] = w; |
860 | periodics [periodiccnt - 1] = w; |
828 | upheap ((WT *)periodics, periodiccnt - 1); |
861 | upheap ((WT *)periodics, periodiccnt - 1); |
829 | } |
862 | } |
830 | |
863 | |
831 | void |
864 | void |
832 | evperiodic_stop (struct ev_periodic *w) |
865 | ev_periodic_stop (struct ev_periodic *w) |
833 | { |
866 | { |
834 | ev_clear ((W)w); |
867 | ev_clear_pending ((W)w); |
835 | if (!ev_is_active (w)) |
868 | if (!ev_is_active (w)) |
836 | return; |
869 | return; |
837 | |
870 | |
838 | if (w->active < periodiccnt--) |
871 | if (w->active < periodiccnt--) |
839 | { |
872 | { |
… | |
… | |
843 | |
876 | |
844 | ev_stop ((W)w); |
877 | ev_stop ((W)w); |
845 | } |
878 | } |
846 | |
879 | |
847 | void |
880 | void |
848 | evsignal_start (struct ev_signal *w) |
881 | ev_signal_start (struct ev_signal *w) |
849 | { |
882 | { |
850 | if (ev_is_active (w)) |
883 | if (ev_is_active (w)) |
851 | return; |
884 | return; |
|
|
885 | |
|
|
886 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
852 | |
887 | |
853 | ev_start ((W)w, 1); |
888 | ev_start ((W)w, 1); |
854 | array_needsize (signals, signalmax, w->signum, signals_init); |
889 | array_needsize (signals, signalmax, w->signum, signals_init); |
855 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
890 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
856 | |
891 | |
… | |
… | |
863 | sigaction (w->signum, &sa, 0); |
898 | sigaction (w->signum, &sa, 0); |
864 | } |
899 | } |
865 | } |
900 | } |
866 | |
901 | |
867 | void |
902 | void |
868 | evsignal_stop (struct ev_signal *w) |
903 | ev_signal_stop (struct ev_signal *w) |
869 | { |
904 | { |
870 | ev_clear ((W)w); |
905 | ev_clear_pending ((W)w); |
871 | if (!ev_is_active (w)) |
906 | if (!ev_is_active (w)) |
872 | return; |
907 | return; |
873 | |
908 | |
874 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
909 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
875 | ev_stop ((W)w); |
910 | ev_stop ((W)w); |
876 | |
911 | |
877 | if (!signals [w->signum - 1].head) |
912 | if (!signals [w->signum - 1].head) |
878 | signal (w->signum, SIG_DFL); |
913 | signal (w->signum, SIG_DFL); |
879 | } |
914 | } |
880 | |
915 | |
|
|
916 | void |
881 | void evidle_start (struct ev_idle *w) |
917 | ev_idle_start (struct ev_idle *w) |
882 | { |
918 | { |
883 | if (ev_is_active (w)) |
919 | if (ev_is_active (w)) |
884 | return; |
920 | return; |
885 | |
921 | |
886 | ev_start ((W)w, ++idlecnt); |
922 | ev_start ((W)w, ++idlecnt); |
887 | array_needsize (idles, idlemax, idlecnt, ); |
923 | array_needsize (idles, idlemax, idlecnt, ); |
888 | idles [idlecnt - 1] = w; |
924 | idles [idlecnt - 1] = w; |
889 | } |
925 | } |
890 | |
926 | |
|
|
927 | void |
891 | void evidle_stop (struct ev_idle *w) |
928 | ev_idle_stop (struct ev_idle *w) |
892 | { |
929 | { |
893 | ev_clear ((W)w); |
930 | ev_clear_pending ((W)w); |
894 | if (ev_is_active (w)) |
931 | if (ev_is_active (w)) |
895 | return; |
932 | return; |
896 | |
933 | |
897 | idles [w->active - 1] = idles [--idlecnt]; |
934 | idles [w->active - 1] = idles [--idlecnt]; |
898 | ev_stop ((W)w); |
935 | ev_stop ((W)w); |
899 | } |
936 | } |
900 | |
937 | |
|
|
938 | void |
901 | void evprepare_start (struct ev_prepare *w) |
939 | ev_prepare_start (struct ev_prepare *w) |
902 | { |
940 | { |
903 | if (ev_is_active (w)) |
941 | if (ev_is_active (w)) |
904 | return; |
942 | return; |
905 | |
943 | |
906 | ev_start ((W)w, ++preparecnt); |
944 | ev_start ((W)w, ++preparecnt); |
907 | array_needsize (prepares, preparemax, preparecnt, ); |
945 | array_needsize (prepares, preparemax, preparecnt, ); |
908 | prepares [preparecnt - 1] = w; |
946 | prepares [preparecnt - 1] = w; |
909 | } |
947 | } |
910 | |
948 | |
|
|
949 | void |
911 | void evprepare_stop (struct ev_prepare *w) |
950 | ev_prepare_stop (struct ev_prepare *w) |
912 | { |
951 | { |
913 | ev_clear ((W)w); |
952 | ev_clear_pending ((W)w); |
914 | if (ev_is_active (w)) |
953 | if (ev_is_active (w)) |
915 | return; |
954 | return; |
916 | |
955 | |
917 | prepares [w->active - 1] = prepares [--preparecnt]; |
956 | prepares [w->active - 1] = prepares [--preparecnt]; |
918 | ev_stop ((W)w); |
957 | ev_stop ((W)w); |
919 | } |
958 | } |
920 | |
959 | |
|
|
960 | void |
921 | void evcheck_start (struct ev_check *w) |
961 | ev_check_start (struct ev_check *w) |
922 | { |
962 | { |
923 | if (ev_is_active (w)) |
963 | if (ev_is_active (w)) |
924 | return; |
964 | return; |
925 | |
965 | |
926 | ev_start ((W)w, ++checkcnt); |
966 | ev_start ((W)w, ++checkcnt); |
927 | array_needsize (checks, checkmax, checkcnt, ); |
967 | array_needsize (checks, checkmax, checkcnt, ); |
928 | checks [checkcnt - 1] = w; |
968 | checks [checkcnt - 1] = w; |
929 | } |
969 | } |
930 | |
970 | |
|
|
971 | void |
931 | void evcheck_stop (struct ev_check *w) |
972 | ev_check_stop (struct ev_check *w) |
932 | { |
973 | { |
933 | ev_clear ((W)w); |
974 | ev_clear_pending ((W)w); |
934 | if (ev_is_active (w)) |
975 | if (ev_is_active (w)) |
935 | return; |
976 | return; |
936 | |
977 | |
937 | checks [w->active - 1] = checks [--checkcnt]; |
978 | checks [w->active - 1] = checks [--checkcnt]; |
938 | ev_stop ((W)w); |
979 | ev_stop ((W)w); |
939 | } |
980 | } |
940 | |
981 | |
|
|
982 | void |
941 | void evchild_start (struct ev_child *w) |
983 | ev_child_start (struct ev_child *w) |
942 | { |
984 | { |
943 | if (ev_is_active (w)) |
985 | if (ev_is_active (w)) |
944 | return; |
986 | return; |
945 | |
987 | |
946 | ev_start ((W)w, 1); |
988 | ev_start ((W)w, 1); |
947 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
989 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
948 | } |
990 | } |
949 | |
991 | |
|
|
992 | void |
950 | void evchild_stop (struct ev_child *w) |
993 | ev_child_stop (struct ev_child *w) |
951 | { |
994 | { |
952 | ev_clear ((W)w); |
995 | ev_clear_pending ((W)w); |
953 | if (ev_is_active (w)) |
996 | if (ev_is_active (w)) |
954 | return; |
997 | return; |
955 | |
998 | |
956 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
999 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
957 | ev_stop ((W)w); |
1000 | ev_stop ((W)w); |
… | |
… | |
971 | once_cb (struct ev_once *once, int revents) |
1014 | once_cb (struct ev_once *once, int revents) |
972 | { |
1015 | { |
973 | void (*cb)(int revents, void *arg) = once->cb; |
1016 | void (*cb)(int revents, void *arg) = once->cb; |
974 | void *arg = once->arg; |
1017 | void *arg = once->arg; |
975 | |
1018 | |
976 | evio_stop (&once->io); |
1019 | ev_io_stop (&once->io); |
977 | evtimer_stop (&once->to); |
1020 | ev_timer_stop (&once->to); |
978 | free (once); |
1021 | free (once); |
979 | |
1022 | |
980 | cb (revents, arg); |
1023 | cb (revents, arg); |
981 | } |
1024 | } |
982 | |
1025 | |
… | |
… | |
996 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
1039 | ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
997 | { |
1040 | { |
998 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
1041 | struct ev_once *once = malloc (sizeof (struct ev_once)); |
999 | |
1042 | |
1000 | if (!once) |
1043 | if (!once) |
1001 | cb (EV_ERROR, arg); |
1044 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
1002 | else |
1045 | else |
1003 | { |
1046 | { |
1004 | once->cb = cb; |
1047 | once->cb = cb; |
1005 | once->arg = arg; |
1048 | once->arg = arg; |
1006 | |
1049 | |
1007 | evw_init (&once->io, once_cb_io); |
1050 | ev_watcher_init (&once->io, once_cb_io); |
1008 | |
|
|
1009 | if (fd >= 0) |
1051 | if (fd >= 0) |
1010 | { |
1052 | { |
1011 | evio_set (&once->io, fd, events); |
1053 | ev_io_set (&once->io, fd, events); |
1012 | evio_start (&once->io); |
1054 | ev_io_start (&once->io); |
1013 | } |
1055 | } |
1014 | |
1056 | |
1015 | evw_init (&once->to, once_cb_to); |
1057 | ev_watcher_init (&once->to, once_cb_to); |
1016 | |
|
|
1017 | if (timeout >= 0.) |
1058 | if (timeout >= 0.) |
1018 | { |
1059 | { |
1019 | evtimer_set (&once->to, timeout, 0.); |
1060 | ev_timer_set (&once->to, timeout, 0.); |
1020 | evtimer_start (&once->to); |
1061 | ev_timer_start (&once->to); |
1021 | } |
1062 | } |
1022 | } |
1063 | } |
1023 | } |
1064 | } |
1024 | |
1065 | |
1025 | /*****************************************************************************/ |
1066 | /*****************************************************************************/ |
… | |
… | |
1036 | |
1077 | |
1037 | static void |
1078 | static void |
1038 | ocb (struct ev_timer *w, int revents) |
1079 | ocb (struct ev_timer *w, int revents) |
1039 | { |
1080 | { |
1040 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1081 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1041 | evtimer_stop (w); |
1082 | ev_timer_stop (w); |
1042 | evtimer_start (w); |
1083 | ev_timer_start (w); |
1043 | } |
1084 | } |
1044 | |
1085 | |
1045 | static void |
1086 | static void |
1046 | scb (struct ev_signal *w, int revents) |
1087 | scb (struct ev_signal *w, int revents) |
1047 | { |
1088 | { |
1048 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1089 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1049 | evio_stop (&wio); |
1090 | ev_io_stop (&wio); |
1050 | evio_start (&wio); |
1091 | ev_io_start (&wio); |
1051 | } |
1092 | } |
1052 | |
1093 | |
1053 | static void |
1094 | static void |
1054 | gcb (struct ev_signal *w, int revents) |
1095 | gcb (struct ev_signal *w, int revents) |
1055 | { |
1096 | { |
… | |
… | |
1059 | |
1100 | |
1060 | int main (void) |
1101 | int main (void) |
1061 | { |
1102 | { |
1062 | ev_init (0); |
1103 | ev_init (0); |
1063 | |
1104 | |
1064 | evio_init (&wio, sin_cb, 0, EV_READ); |
1105 | ev_io_init (&wio, sin_cb, 0, EV_READ); |
1065 | evio_start (&wio); |
1106 | ev_io_start (&wio); |
1066 | |
1107 | |
1067 | struct ev_timer t[10000]; |
1108 | struct ev_timer t[10000]; |
1068 | |
1109 | |
1069 | #if 0 |
1110 | #if 0 |
1070 | int i; |
1111 | int i; |
1071 | for (i = 0; i < 10000; ++i) |
1112 | for (i = 0; i < 10000; ++i) |
1072 | { |
1113 | { |
1073 | struct ev_timer *w = t + i; |
1114 | struct ev_timer *w = t + i; |
1074 | evw_init (w, ocb, i); |
1115 | ev_watcher_init (w, ocb, i); |
1075 | evtimer_init_abs (w, ocb, drand48 (), 0.99775533); |
1116 | ev_timer_init_abs (w, ocb, drand48 (), 0.99775533); |
1076 | evtimer_start (w); |
1117 | ev_timer_start (w); |
1077 | if (drand48 () < 0.5) |
1118 | if (drand48 () < 0.5) |
1078 | evtimer_stop (w); |
1119 | ev_timer_stop (w); |
1079 | } |
1120 | } |
1080 | #endif |
1121 | #endif |
1081 | |
1122 | |
1082 | struct ev_timer t1; |
1123 | struct ev_timer t1; |
1083 | evtimer_init (&t1, ocb, 5, 10); |
1124 | ev_timer_init (&t1, ocb, 5, 10); |
1084 | evtimer_start (&t1); |
1125 | ev_timer_start (&t1); |
1085 | |
1126 | |
1086 | struct ev_signal sig; |
1127 | struct ev_signal sig; |
1087 | evsignal_init (&sig, scb, SIGQUIT); |
1128 | ev_signal_init (&sig, scb, SIGQUIT); |
1088 | evsignal_start (&sig); |
1129 | ev_signal_start (&sig); |
1089 | |
1130 | |
1090 | struct ev_check cw; |
1131 | struct ev_check cw; |
1091 | evcheck_init (&cw, gcb); |
1132 | ev_check_init (&cw, gcb); |
1092 | evcheck_start (&cw); |
1133 | ev_check_start (&cw); |
1093 | |
1134 | |
1094 | struct ev_idle iw; |
1135 | struct ev_idle iw; |
1095 | evidle_init (&iw, gcb); |
1136 | ev_idle_init (&iw, gcb); |
1096 | evidle_start (&iw); |
1137 | ev_idle_start (&iw); |
1097 | |
1138 | |
1098 | ev_loop (0); |
1139 | ev_loop (0); |
1099 | |
1140 | |
1100 | return 0; |
1141 | return 0; |
1101 | } |
1142 | } |