|
|
1 | /* |
|
|
2 | * libev event processing core, watcher management |
|
|
3 | * |
|
|
4 | * Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de> |
|
|
5 | * All rights reserved. |
|
|
6 | * |
|
|
7 | * Redistribution and use in source and binary forms, with or without |
|
|
8 | * modification, are permitted provided that the following conditions are |
|
|
9 | * met: |
|
|
10 | * |
|
|
11 | * * Redistributions of source code must retain the above copyright |
|
|
12 | * notice, this list of conditions and the following disclaimer. |
|
|
13 | * |
|
|
14 | * * Redistributions in binary form must reproduce the above |
|
|
15 | * copyright notice, this list of conditions and the following |
|
|
16 | * disclaimer in the documentation and/or other materials provided |
|
|
17 | * with the distribution. |
|
|
18 | * |
|
|
19 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
|
|
20 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
|
|
21 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
|
|
22 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
|
|
23 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
|
|
24 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
|
|
25 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
|
|
26 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
|
|
27 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
|
|
28 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
|
|
29 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
|
|
30 | */ |
|
|
31 | |
|
|
32 | #ifdef __cplusplus |
|
|
33 | extern "C" { |
|
|
34 | #endif |
|
|
35 | |
|
|
36 | #ifndef EV_STANDALONE |
|
|
37 | # ifdef EV_CONFIG_H |
|
|
38 | # include EV_CONFIG_H |
|
|
39 | # else |
|
|
40 | # include "config.h" |
|
|
41 | # endif |
|
|
42 | |
|
|
43 | # if HAVE_CLOCK_GETTIME |
|
|
44 | # ifndef EV_USE_MONOTONIC |
|
|
45 | # define EV_USE_MONOTONIC 1 |
|
|
46 | # endif |
|
|
47 | # ifndef EV_USE_REALTIME |
|
|
48 | # define EV_USE_REALTIME 1 |
|
|
49 | # endif |
|
|
50 | # else |
|
|
51 | # ifndef EV_USE_MONOTONIC |
|
|
52 | # define EV_USE_MONOTONIC 0 |
|
|
53 | # endif |
|
|
54 | # ifndef EV_USE_REALTIME |
|
|
55 | # define EV_USE_REALTIME 0 |
|
|
56 | # endif |
|
|
57 | # endif |
|
|
58 | |
|
|
59 | # ifndef EV_USE_SELECT |
|
|
60 | # if HAVE_SELECT && HAVE_SYS_SELECT_H |
|
|
61 | # define EV_USE_SELECT 1 |
|
|
62 | # else |
|
|
63 | # define EV_USE_SELECT 0 |
|
|
64 | # endif |
|
|
65 | # endif |
|
|
66 | |
|
|
67 | # ifndef EV_USE_POLL |
|
|
68 | # if HAVE_POLL && HAVE_POLL_H |
|
|
69 | # define EV_USE_POLL 1 |
|
|
70 | # else |
|
|
71 | # define EV_USE_POLL 0 |
|
|
72 | # endif |
|
|
73 | # endif |
|
|
74 | |
|
|
75 | # ifndef EV_USE_EPOLL |
|
|
76 | # if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
|
|
77 | # define EV_USE_EPOLL 1 |
|
|
78 | # else |
|
|
79 | # define EV_USE_EPOLL 0 |
|
|
80 | # endif |
|
|
81 | # endif |
|
|
82 | |
|
|
83 | # ifndef EV_USE_KQUEUE |
|
|
84 | # if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
|
|
85 | # define EV_USE_KQUEUE 1 |
|
|
86 | # else |
|
|
87 | # define EV_USE_KQUEUE 0 |
|
|
88 | # endif |
|
|
89 | # endif |
|
|
90 | |
|
|
91 | # ifndef EV_USE_PORT |
|
|
92 | # if HAVE_PORT_H && HAVE_PORT_CREATE |
|
|
93 | # define EV_USE_PORT 1 |
|
|
94 | # else |
|
|
95 | # define EV_USE_PORT 0 |
|
|
96 | # endif |
|
|
97 | # endif |
|
|
98 | |
|
|
99 | #endif |
|
|
100 | |
1 | #include <math.h> |
101 | #include <math.h> |
2 | #include <stdlib.h> |
102 | #include <stdlib.h> |
3 | #include <unistd.h> |
|
|
4 | #include <fcntl.h> |
103 | #include <fcntl.h> |
5 | #include <signal.h> |
104 | #include <stddef.h> |
6 | |
105 | |
7 | #include <stdio.h> |
106 | #include <stdio.h> |
8 | |
107 | |
9 | #include <assert.h> |
108 | #include <assert.h> |
10 | #include <errno.h> |
109 | #include <errno.h> |
11 | #include <sys/time.h> |
110 | #include <sys/types.h> |
12 | #include <time.h> |
111 | #include <time.h> |
13 | |
112 | |
|
|
113 | #include <signal.h> |
|
|
114 | |
|
|
115 | #ifndef _WIN32 |
|
|
116 | # include <sys/time.h> |
|
|
117 | # include <sys/wait.h> |
|
|
118 | # include <unistd.h> |
|
|
119 | #else |
|
|
120 | # define WIN32_LEAN_AND_MEAN |
|
|
121 | # include <windows.h> |
|
|
122 | # ifndef EV_SELECT_IS_WINSOCKET |
|
|
123 | # define EV_SELECT_IS_WINSOCKET 1 |
|
|
124 | # endif |
|
|
125 | #endif |
|
|
126 | |
|
|
127 | /**/ |
|
|
128 | |
|
|
129 | #ifndef EV_USE_MONOTONIC |
|
|
130 | # define EV_USE_MONOTONIC 0 |
|
|
131 | #endif |
|
|
132 | |
|
|
133 | #ifndef EV_USE_REALTIME |
|
|
134 | # define EV_USE_REALTIME 0 |
|
|
135 | #endif |
|
|
136 | |
|
|
137 | #ifndef EV_USE_SELECT |
|
|
138 | # define EV_USE_SELECT 1 |
|
|
139 | #endif |
|
|
140 | |
|
|
141 | #ifndef EV_USE_POLL |
|
|
142 | # ifdef _WIN32 |
|
|
143 | # define EV_USE_POLL 0 |
|
|
144 | # else |
|
|
145 | # define EV_USE_POLL 1 |
|
|
146 | # endif |
|
|
147 | #endif |
|
|
148 | |
|
|
149 | #ifndef EV_USE_EPOLL |
|
|
150 | # define EV_USE_EPOLL 0 |
|
|
151 | #endif |
|
|
152 | |
|
|
153 | #ifndef EV_USE_KQUEUE |
|
|
154 | # define EV_USE_KQUEUE 0 |
|
|
155 | #endif |
|
|
156 | |
|
|
157 | #ifndef EV_USE_PORT |
|
|
158 | # define EV_USE_PORT 0 |
|
|
159 | #endif |
|
|
160 | |
|
|
161 | /**/ |
|
|
162 | |
14 | #ifdef CLOCK_MONOTONIC |
163 | #ifndef CLOCK_MONOTONIC |
|
|
164 | # undef EV_USE_MONOTONIC |
15 | # define HAVE_MONOTONIC 1 |
165 | # define EV_USE_MONOTONIC 0 |
16 | #endif |
166 | #endif |
17 | |
167 | |
|
|
168 | #ifndef CLOCK_REALTIME |
|
|
169 | # undef EV_USE_REALTIME |
18 | #define HAVE_REALTIME 1 |
170 | # define EV_USE_REALTIME 0 |
19 | #define HAVE_EPOLL 1 |
171 | #endif |
20 | #define HAVE_SELECT 1 |
172 | |
|
|
173 | #if EV_SELECT_IS_WINSOCKET |
|
|
174 | # include <winsock.h> |
|
|
175 | #endif |
|
|
176 | |
|
|
177 | /**/ |
21 | |
178 | |
22 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
179 | #define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
23 | #define MAX_BLOCKTIME 60. |
180 | #define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
|
|
181 | #define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */ |
|
|
182 | /*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */ |
24 | |
183 | |
|
|
184 | #ifdef EV_H |
|
|
185 | # include EV_H |
|
|
186 | #else |
25 | #include "ev.h" |
187 | # include "ev.h" |
|
|
188 | #endif |
26 | |
189 | |
27 | struct ev_watcher { |
190 | #if __GNUC__ >= 3 |
28 | EV_WATCHER (ev_watcher); |
191 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
29 | }; |
192 | # define inline_size static inline /* inline for codesize */ |
|
|
193 | # if EV_MINIMAL |
|
|
194 | # define noinline __attribute__ ((noinline)) |
|
|
195 | # define inline_speed static noinline |
|
|
196 | # else |
|
|
197 | # define noinline |
|
|
198 | # define inline_speed static inline |
|
|
199 | # endif |
|
|
200 | #else |
|
|
201 | # define expect(expr,value) (expr) |
|
|
202 | # define inline_speed static |
|
|
203 | # define inline_minimal static |
|
|
204 | # define noinline |
|
|
205 | #endif |
30 | |
206 | |
31 | struct ev_watcher_list { |
207 | #define expect_false(expr) expect ((expr) != 0, 0) |
32 | EV_WATCHER_LIST (ev_watcher_list); |
208 | #define expect_true(expr) expect ((expr) != 0, 1) |
33 | }; |
|
|
34 | |
209 | |
35 | static ev_tstamp now, diff; /* monotonic clock */ |
210 | #define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
36 | ev_tstamp ev_now; |
211 | #define ABSPRI(w) ((w)->priority - EV_MINPRI) |
37 | int ev_method; |
|
|
38 | |
212 | |
39 | static int have_monotonic; /* runtime */ |
213 | #define EMPTY0 /* required for microsofts broken pseudo-c compiler */ |
|
|
214 | #define EMPTY2(a,b) /* used to suppress some warnings */ |
40 | |
215 | |
41 | static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */ |
216 | typedef ev_watcher *W; |
42 | static void (*method_modify)(int fd, int oev, int nev); |
217 | typedef ev_watcher_list *WL; |
43 | static void (*method_poll)(ev_tstamp timeout); |
218 | typedef ev_watcher_time *WT; |
|
|
219 | |
|
|
220 | static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
|
|
221 | |
|
|
222 | #ifdef _WIN32 |
|
|
223 | # include "ev_win32.c" |
|
|
224 | #endif |
44 | |
225 | |
45 | /*****************************************************************************/ |
226 | /*****************************************************************************/ |
46 | |
227 | |
47 | ev_tstamp |
228 | static void (*syserr_cb)(const char *msg); |
|
|
229 | |
|
|
230 | void ev_set_syserr_cb (void (*cb)(const char *msg)) |
|
|
231 | { |
|
|
232 | syserr_cb = cb; |
|
|
233 | } |
|
|
234 | |
|
|
235 | static void |
|
|
236 | syserr (const char *msg) |
|
|
237 | { |
|
|
238 | if (!msg) |
|
|
239 | msg = "(libev) system error"; |
|
|
240 | |
|
|
241 | if (syserr_cb) |
|
|
242 | syserr_cb (msg); |
|
|
243 | else |
|
|
244 | { |
|
|
245 | perror (msg); |
|
|
246 | abort (); |
|
|
247 | } |
|
|
248 | } |
|
|
249 | |
|
|
250 | static void *(*alloc)(void *ptr, long size); |
|
|
251 | |
|
|
252 | void ev_set_allocator (void *(*cb)(void *ptr, long size)) |
|
|
253 | { |
|
|
254 | alloc = cb; |
|
|
255 | } |
|
|
256 | |
|
|
257 | static void * |
|
|
258 | ev_realloc (void *ptr, long size) |
|
|
259 | { |
|
|
260 | ptr = alloc ? alloc (ptr, size) : realloc (ptr, size); |
|
|
261 | |
|
|
262 | if (!ptr && size) |
|
|
263 | { |
|
|
264 | fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
|
|
265 | abort (); |
|
|
266 | } |
|
|
267 | |
|
|
268 | return ptr; |
|
|
269 | } |
|
|
270 | |
|
|
271 | #define ev_malloc(size) ev_realloc (0, (size)) |
|
|
272 | #define ev_free(ptr) ev_realloc ((ptr), 0) |
|
|
273 | |
|
|
274 | /*****************************************************************************/ |
|
|
275 | |
|
|
276 | typedef struct |
|
|
277 | { |
|
|
278 | WL head; |
|
|
279 | unsigned char events; |
|
|
280 | unsigned char reify; |
|
|
281 | #if EV_SELECT_IS_WINSOCKET |
|
|
282 | SOCKET handle; |
|
|
283 | #endif |
|
|
284 | } ANFD; |
|
|
285 | |
|
|
286 | typedef struct |
|
|
287 | { |
|
|
288 | W w; |
|
|
289 | int events; |
|
|
290 | } ANPENDING; |
|
|
291 | |
|
|
292 | #if EV_MULTIPLICITY |
|
|
293 | |
|
|
294 | struct ev_loop |
|
|
295 | { |
|
|
296 | ev_tstamp ev_rt_now; |
|
|
297 | #define ev_rt_now ((loop)->ev_rt_now) |
|
|
298 | #define VAR(name,decl) decl; |
|
|
299 | #include "ev_vars.h" |
|
|
300 | #undef VAR |
|
|
301 | }; |
|
|
302 | #include "ev_wrap.h" |
|
|
303 | |
|
|
304 | static struct ev_loop default_loop_struct; |
|
|
305 | struct ev_loop *ev_default_loop_ptr; |
|
|
306 | |
|
|
307 | #else |
|
|
308 | |
|
|
309 | ev_tstamp ev_rt_now; |
|
|
310 | #define VAR(name,decl) static decl; |
|
|
311 | #include "ev_vars.h" |
|
|
312 | #undef VAR |
|
|
313 | |
|
|
314 | static int ev_default_loop_ptr; |
|
|
315 | |
|
|
316 | #endif |
|
|
317 | |
|
|
318 | /*****************************************************************************/ |
|
|
319 | |
|
|
320 | ev_tstamp noinline |
48 | ev_time (void) |
321 | ev_time (void) |
49 | { |
322 | { |
50 | #if HAVE_REALTIME |
323 | #if EV_USE_REALTIME |
51 | struct timespec ts; |
324 | struct timespec ts; |
52 | clock_gettime (CLOCK_REALTIME, &ts); |
325 | clock_gettime (CLOCK_REALTIME, &ts); |
53 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
326 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
54 | #else |
327 | #else |
55 | struct timeval tv; |
328 | struct timeval tv; |
56 | gettimeofday (&tv, 0); |
329 | gettimeofday (&tv, 0); |
57 | return tv.tv_sec + tv.tv_usec * 1e-6; |
330 | return tv.tv_sec + tv.tv_usec * 1e-6; |
58 | #endif |
331 | #endif |
59 | } |
332 | } |
60 | |
333 | |
61 | static ev_tstamp |
334 | ev_tstamp inline_size |
62 | get_clock (void) |
335 | get_clock (void) |
63 | { |
336 | { |
64 | #if HAVE_MONOTONIC |
337 | #if EV_USE_MONOTONIC |
65 | if (have_monotonic) |
338 | if (expect_true (have_monotonic)) |
66 | { |
339 | { |
67 | struct timespec ts; |
340 | struct timespec ts; |
68 | clock_gettime (CLOCK_MONOTONIC, &ts); |
341 | clock_gettime (CLOCK_MONOTONIC, &ts); |
69 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
342 | return ts.tv_sec + ts.tv_nsec * 1e-9; |
70 | } |
343 | } |
71 | #endif |
344 | #endif |
72 | |
345 | |
73 | return ev_time (); |
346 | return ev_time (); |
74 | } |
347 | } |
75 | |
348 | |
|
|
349 | #if EV_MULTIPLICITY |
|
|
350 | ev_tstamp |
|
|
351 | ev_now (EV_P) |
|
|
352 | { |
|
|
353 | return ev_rt_now; |
|
|
354 | } |
|
|
355 | #endif |
|
|
356 | |
|
|
357 | #define array_roundsize(type,n) (((n) | 4) & ~3) |
|
|
358 | |
76 | #define array_needsize(base,cur,cnt,init) \ |
359 | #define array_needsize(type,base,cur,cnt,init) \ |
77 | if ((cnt) > cur) \ |
360 | if (expect_false ((cnt) > cur)) \ |
78 | { \ |
361 | { \ |
79 | int newcnt = cur ? cur << 1 : 16; \ |
362 | int newcnt = cur; \ |
80 | fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\ |
363 | do \ |
|
|
364 | { \ |
|
|
365 | newcnt = array_roundsize (type, newcnt << 1); \ |
|
|
366 | } \ |
|
|
367 | while ((cnt) > newcnt); \ |
|
|
368 | \ |
81 | base = realloc (base, sizeof (*base) * (newcnt)); \ |
369 | base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\ |
82 | init (base + cur, newcnt - cur); \ |
370 | init (base + cur, newcnt - cur); \ |
83 | cur = newcnt; \ |
371 | cur = newcnt; \ |
84 | } |
372 | } |
|
|
373 | |
|
|
374 | #define array_slim(type,stem) \ |
|
|
375 | if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
|
|
376 | { \ |
|
|
377 | stem ## max = array_roundsize (stem ## cnt >> 1); \ |
|
|
378 | base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
|
|
379 | fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
|
|
380 | } |
|
|
381 | |
|
|
382 | #define array_free(stem, idx) \ |
|
|
383 | ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
85 | |
384 | |
86 | /*****************************************************************************/ |
385 | /*****************************************************************************/ |
87 | |
386 | |
|
|
387 | void inline_size |
|
|
388 | anfds_init (ANFD *base, int count) |
|
|
389 | { |
|
|
390 | while (count--) |
|
|
391 | { |
|
|
392 | base->head = 0; |
|
|
393 | base->events = EV_NONE; |
|
|
394 | base->reify = 0; |
|
|
395 | |
|
|
396 | ++base; |
|
|
397 | } |
|
|
398 | } |
|
|
399 | |
|
|
400 | void noinline |
|
|
401 | ev_feed_event (EV_P_ void *w, int revents) |
|
|
402 | { |
|
|
403 | W w_ = (W)w; |
|
|
404 | |
|
|
405 | if (expect_false (w_->pending)) |
|
|
406 | { |
|
|
407 | pendings [ABSPRI (w_)][w_->pending - 1].events |= revents; |
|
|
408 | return; |
|
|
409 | } |
|
|
410 | |
|
|
411 | w_->pending = ++pendingcnt [ABSPRI (w_)]; |
|
|
412 | array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2); |
|
|
413 | pendings [ABSPRI (w_)][w_->pending - 1].w = w_; |
|
|
414 | pendings [ABSPRI (w_)][w_->pending - 1].events = revents; |
|
|
415 | } |
|
|
416 | |
|
|
417 | static void |
|
|
418 | queue_events (EV_P_ W *events, int eventcnt, int type) |
|
|
419 | { |
|
|
420 | int i; |
|
|
421 | |
|
|
422 | for (i = 0; i < eventcnt; ++i) |
|
|
423 | ev_feed_event (EV_A_ events [i], type); |
|
|
424 | } |
|
|
425 | |
|
|
426 | void inline_speed |
|
|
427 | fd_event (EV_P_ int fd, int revents) |
|
|
428 | { |
|
|
429 | ANFD *anfd = anfds + fd; |
|
|
430 | ev_io *w; |
|
|
431 | |
|
|
432 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
433 | { |
|
|
434 | int ev = w->events & revents; |
|
|
435 | |
|
|
436 | if (ev) |
|
|
437 | ev_feed_event (EV_A_ (W)w, ev); |
|
|
438 | } |
|
|
439 | } |
|
|
440 | |
|
|
441 | void |
|
|
442 | ev_feed_fd_event (EV_P_ int fd, int revents) |
|
|
443 | { |
|
|
444 | fd_event (EV_A_ fd, revents); |
|
|
445 | } |
|
|
446 | |
|
|
447 | /*****************************************************************************/ |
|
|
448 | |
|
|
449 | void inline_size |
|
|
450 | fd_reify (EV_P) |
|
|
451 | { |
|
|
452 | int i; |
|
|
453 | |
|
|
454 | for (i = 0; i < fdchangecnt; ++i) |
|
|
455 | { |
|
|
456 | int fd = fdchanges [i]; |
|
|
457 | ANFD *anfd = anfds + fd; |
|
|
458 | ev_io *w; |
|
|
459 | |
|
|
460 | int events = 0; |
|
|
461 | |
|
|
462 | for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
|
|
463 | events |= w->events; |
|
|
464 | |
|
|
465 | #if EV_SELECT_IS_WINSOCKET |
|
|
466 | if (events) |
|
|
467 | { |
|
|
468 | unsigned long argp; |
|
|
469 | anfd->handle = _get_osfhandle (fd); |
|
|
470 | assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
|
|
471 | } |
|
|
472 | #endif |
|
|
473 | |
|
|
474 | anfd->reify = 0; |
|
|
475 | |
|
|
476 | backend_modify (EV_A_ fd, anfd->events, events); |
|
|
477 | anfd->events = events; |
|
|
478 | } |
|
|
479 | |
|
|
480 | fdchangecnt = 0; |
|
|
481 | } |
|
|
482 | |
|
|
483 | void inline_size |
|
|
484 | fd_change (EV_P_ int fd) |
|
|
485 | { |
|
|
486 | if (expect_false (anfds [fd].reify)) |
|
|
487 | return; |
|
|
488 | |
|
|
489 | anfds [fd].reify = 1; |
|
|
490 | |
|
|
491 | ++fdchangecnt; |
|
|
492 | array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
|
|
493 | fdchanges [fdchangecnt - 1] = fd; |
|
|
494 | } |
|
|
495 | |
|
|
496 | void inline_speed |
|
|
497 | fd_kill (EV_P_ int fd) |
|
|
498 | { |
|
|
499 | ev_io *w; |
|
|
500 | |
|
|
501 | while ((w = (ev_io *)anfds [fd].head)) |
|
|
502 | { |
|
|
503 | ev_io_stop (EV_A_ w); |
|
|
504 | ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
|
|
505 | } |
|
|
506 | } |
|
|
507 | |
|
|
508 | int inline_size |
|
|
509 | fd_valid (int fd) |
|
|
510 | { |
|
|
511 | #ifdef _WIN32 |
|
|
512 | return _get_osfhandle (fd) != -1; |
|
|
513 | #else |
|
|
514 | return fcntl (fd, F_GETFD) != -1; |
|
|
515 | #endif |
|
|
516 | } |
|
|
517 | |
|
|
518 | /* called on EBADF to verify fds */ |
|
|
519 | static void noinline |
|
|
520 | fd_ebadf (EV_P) |
|
|
521 | { |
|
|
522 | int fd; |
|
|
523 | |
|
|
524 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
525 | if (anfds [fd].events) |
|
|
526 | if (!fd_valid (fd) == -1 && errno == EBADF) |
|
|
527 | fd_kill (EV_A_ fd); |
|
|
528 | } |
|
|
529 | |
|
|
530 | /* called on ENOMEM in select/poll to kill some fds and retry */ |
|
|
531 | static void noinline |
|
|
532 | fd_enomem (EV_P) |
|
|
533 | { |
|
|
534 | int fd; |
|
|
535 | |
|
|
536 | for (fd = anfdmax; fd--; ) |
|
|
537 | if (anfds [fd].events) |
|
|
538 | { |
|
|
539 | fd_kill (EV_A_ fd); |
|
|
540 | return; |
|
|
541 | } |
|
|
542 | } |
|
|
543 | |
|
|
544 | /* usually called after fork if backend needs to re-arm all fds from scratch */ |
|
|
545 | static void noinline |
|
|
546 | fd_rearm_all (EV_P) |
|
|
547 | { |
|
|
548 | int fd; |
|
|
549 | |
|
|
550 | /* this should be highly optimised to not do anything but set a flag */ |
|
|
551 | for (fd = 0; fd < anfdmax; ++fd) |
|
|
552 | if (anfds [fd].events) |
|
|
553 | { |
|
|
554 | anfds [fd].events = 0; |
|
|
555 | fd_change (EV_A_ fd); |
|
|
556 | } |
|
|
557 | } |
|
|
558 | |
|
|
559 | /*****************************************************************************/ |
|
|
560 | |
|
|
561 | void inline_speed |
|
|
562 | upheap (WT *heap, int k) |
|
|
563 | { |
|
|
564 | WT w = heap [k]; |
|
|
565 | |
|
|
566 | while (k && heap [k >> 1]->at > w->at) |
|
|
567 | { |
|
|
568 | heap [k] = heap [k >> 1]; |
|
|
569 | ((W)heap [k])->active = k + 1; |
|
|
570 | k >>= 1; |
|
|
571 | } |
|
|
572 | |
|
|
573 | heap [k] = w; |
|
|
574 | ((W)heap [k])->active = k + 1; |
|
|
575 | |
|
|
576 | } |
|
|
577 | |
|
|
578 | void inline_speed |
|
|
579 | downheap (WT *heap, int N, int k) |
|
|
580 | { |
|
|
581 | WT w = heap [k]; |
|
|
582 | |
|
|
583 | while (k < (N >> 1)) |
|
|
584 | { |
|
|
585 | int j = k << 1; |
|
|
586 | |
|
|
587 | if (j + 1 < N && heap [j]->at > heap [j + 1]->at) |
|
|
588 | ++j; |
|
|
589 | |
|
|
590 | if (w->at <= heap [j]->at) |
|
|
591 | break; |
|
|
592 | |
|
|
593 | heap [k] = heap [j]; |
|
|
594 | ((W)heap [k])->active = k + 1; |
|
|
595 | k = j; |
|
|
596 | } |
|
|
597 | |
|
|
598 | heap [k] = w; |
|
|
599 | ((W)heap [k])->active = k + 1; |
|
|
600 | } |
|
|
601 | |
|
|
602 | void inline_size |
|
|
603 | adjustheap (WT *heap, int N, int k) |
|
|
604 | { |
|
|
605 | upheap (heap, k); |
|
|
606 | downheap (heap, N, k); |
|
|
607 | } |
|
|
608 | |
|
|
609 | /*****************************************************************************/ |
|
|
610 | |
88 | typedef struct |
611 | typedef struct |
89 | { |
612 | { |
90 | struct ev_io *head; |
613 | WL head; |
91 | unsigned char wev, rev; /* want, received event set */ |
|
|
92 | } ANFD; |
|
|
93 | |
|
|
94 | static ANFD *anfds; |
|
|
95 | static int anfdmax; |
|
|
96 | |
|
|
97 | static int *fdchanges; |
|
|
98 | static int fdchangemax, fdchangecnt; |
|
|
99 | |
|
|
100 | static void |
|
|
101 | anfds_init (ANFD *base, int count) |
|
|
102 | { |
|
|
103 | while (count--) |
|
|
104 | { |
|
|
105 | base->head = 0; |
|
|
106 | base->wev = base->rev = EV_NONE; |
|
|
107 | ++base; |
|
|
108 | } |
|
|
109 | } |
|
|
110 | |
|
|
111 | typedef struct |
|
|
112 | { |
|
|
113 | struct ev_watcher *w; |
|
|
114 | int events; |
|
|
115 | } ANPENDING; |
|
|
116 | |
|
|
117 | static ANPENDING *pendings; |
|
|
118 | static int pendingmax, pendingcnt; |
|
|
119 | |
|
|
120 | static void |
|
|
121 | event (struct ev_watcher *w, int events) |
|
|
122 | { |
|
|
123 | w->pending = ++pendingcnt; |
|
|
124 | array_needsize (pendings, pendingmax, pendingcnt, ); |
|
|
125 | pendings [pendingcnt - 1].w = w; |
|
|
126 | pendings [pendingcnt - 1].events = events; |
|
|
127 | } |
|
|
128 | |
|
|
129 | static void |
|
|
130 | fd_event (int fd, int events) |
|
|
131 | { |
|
|
132 | ANFD *anfd = anfds + fd; |
|
|
133 | struct ev_io *w; |
|
|
134 | |
|
|
135 | for (w = anfd->head; w; w = w->next) |
|
|
136 | { |
|
|
137 | int ev = w->events & events; |
|
|
138 | |
|
|
139 | if (ev) |
|
|
140 | event ((struct ev_watcher *)w, ev); |
|
|
141 | } |
|
|
142 | } |
|
|
143 | |
|
|
144 | /*****************************************************************************/ |
|
|
145 | |
|
|
146 | static struct ev_timer **atimers; |
|
|
147 | static int atimermax, atimercnt; |
|
|
148 | |
|
|
149 | static struct ev_timer **rtimers; |
|
|
150 | static int rtimermax, rtimercnt; |
|
|
151 | |
|
|
152 | static void |
|
|
153 | upheap (struct ev_timer **timers, int k) |
|
|
154 | { |
|
|
155 | struct ev_timer *w = timers [k]; |
|
|
156 | |
|
|
157 | while (k && timers [k >> 1]->at > w->at) |
|
|
158 | { |
|
|
159 | timers [k] = timers [k >> 1]; |
|
|
160 | timers [k]->active = k + 1; |
|
|
161 | k >>= 1; |
|
|
162 | } |
|
|
163 | |
|
|
164 | timers [k] = w; |
|
|
165 | timers [k]->active = k + 1; |
|
|
166 | |
|
|
167 | } |
|
|
168 | |
|
|
169 | static void |
|
|
170 | downheap (struct ev_timer **timers, int N, int k) |
|
|
171 | { |
|
|
172 | struct ev_timer *w = timers [k]; |
|
|
173 | |
|
|
174 | while (k < (N >> 1)) |
|
|
175 | { |
|
|
176 | int j = k << 1; |
|
|
177 | |
|
|
178 | if (j + 1 < N && timers [j]->at > timers [j + 1]->at) |
|
|
179 | ++j; |
|
|
180 | |
|
|
181 | if (w->at <= timers [j]->at) |
|
|
182 | break; |
|
|
183 | |
|
|
184 | timers [k] = timers [j]; |
|
|
185 | timers [k]->active = k + 1; |
|
|
186 | k = j; |
|
|
187 | } |
|
|
188 | |
|
|
189 | timers [k] = w; |
|
|
190 | timers [k]->active = k + 1; |
|
|
191 | } |
|
|
192 | |
|
|
193 | /*****************************************************************************/ |
|
|
194 | |
|
|
195 | typedef struct |
|
|
196 | { |
|
|
197 | struct ev_signal *head; |
|
|
198 | sig_atomic_t gotsig; |
614 | sig_atomic_t volatile gotsig; |
199 | } ANSIG; |
615 | } ANSIG; |
200 | |
616 | |
201 | static ANSIG *signals; |
617 | static ANSIG *signals; |
202 | static int signalmax; |
618 | static int signalmax; |
203 | |
619 | |
204 | static int sigpipe [2]; |
620 | static int sigpipe [2]; |
205 | static sig_atomic_t gotsig; |
621 | static sig_atomic_t volatile gotsig; |
206 | static struct ev_io sigev; |
622 | static ev_io sigev; |
207 | |
623 | |
208 | static void |
624 | void inline_size |
209 | signals_init (ANSIG *base, int count) |
625 | signals_init (ANSIG *base, int count) |
210 | { |
626 | { |
211 | while (count--) |
627 | while (count--) |
212 | { |
628 | { |
213 | base->head = 0; |
629 | base->head = 0; |
214 | base->gotsig = 0; |
630 | base->gotsig = 0; |
|
|
631 | |
215 | ++base; |
632 | ++base; |
216 | } |
633 | } |
217 | } |
634 | } |
218 | |
635 | |
219 | static void |
636 | static void |
220 | sighandler (int signum) |
637 | sighandler (int signum) |
221 | { |
638 | { |
|
|
639 | #if _WIN32 |
|
|
640 | signal (signum, sighandler); |
|
|
641 | #endif |
|
|
642 | |
222 | signals [signum - 1].gotsig = 1; |
643 | signals [signum - 1].gotsig = 1; |
223 | |
644 | |
224 | if (!gotsig) |
645 | if (!gotsig) |
225 | { |
646 | { |
|
|
647 | int old_errno = errno; |
226 | gotsig = 1; |
648 | gotsig = 1; |
227 | write (sigpipe [1], &gotsig, 1); |
649 | write (sigpipe [1], &signum, 1); |
|
|
650 | errno = old_errno; |
228 | } |
651 | } |
|
|
652 | } |
|
|
653 | |
|
|
654 | void noinline |
|
|
655 | ev_feed_signal_event (EV_P_ int signum) |
|
|
656 | { |
|
|
657 | WL w; |
|
|
658 | |
|
|
659 | #if EV_MULTIPLICITY |
|
|
660 | assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
661 | #endif |
|
|
662 | |
|
|
663 | --signum; |
|
|
664 | |
|
|
665 | if (signum < 0 || signum >= signalmax) |
|
|
666 | return; |
|
|
667 | |
|
|
668 | signals [signum].gotsig = 0; |
|
|
669 | |
|
|
670 | for (w = signals [signum].head; w; w = w->next) |
|
|
671 | ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
229 | } |
672 | } |
230 | |
673 | |
231 | static void |
674 | static void |
232 | sigcb (struct ev_io *iow, int revents) |
675 | sigcb (EV_P_ ev_io *iow, int revents) |
233 | { |
676 | { |
234 | struct ev_signal *w; |
|
|
235 | int sig; |
677 | int signum; |
236 | |
678 | |
|
|
679 | read (sigpipe [0], &revents, 1); |
237 | gotsig = 0; |
680 | gotsig = 0; |
238 | read (sigpipe [0], &revents, 1); |
|
|
239 | |
681 | |
240 | for (sig = signalmax; sig--; ) |
682 | for (signum = signalmax; signum--; ) |
241 | if (signals [sig].gotsig) |
683 | if (signals [signum].gotsig) |
|
|
684 | ev_feed_signal_event (EV_A_ signum + 1); |
|
|
685 | } |
|
|
686 | |
|
|
687 | void inline_size |
|
|
688 | fd_intern (int fd) |
|
|
689 | { |
|
|
690 | #ifdef _WIN32 |
|
|
691 | int arg = 1; |
|
|
692 | ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
|
|
693 | #else |
|
|
694 | fcntl (fd, F_SETFD, FD_CLOEXEC); |
|
|
695 | fcntl (fd, F_SETFL, O_NONBLOCK); |
|
|
696 | #endif |
|
|
697 | } |
|
|
698 | |
|
|
699 | static void noinline |
|
|
700 | siginit (EV_P) |
|
|
701 | { |
|
|
702 | fd_intern (sigpipe [0]); |
|
|
703 | fd_intern (sigpipe [1]); |
|
|
704 | |
|
|
705 | ev_io_set (&sigev, sigpipe [0], EV_READ); |
|
|
706 | ev_io_start (EV_A_ &sigev); |
|
|
707 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
708 | } |
|
|
709 | |
|
|
710 | /*****************************************************************************/ |
|
|
711 | |
|
|
712 | static ev_child *childs [PID_HASHSIZE]; |
|
|
713 | |
|
|
714 | #ifndef _WIN32 |
|
|
715 | |
|
|
716 | static ev_signal childev; |
|
|
717 | |
|
|
718 | #ifndef WCONTINUED |
|
|
719 | # define WCONTINUED 0 |
|
|
720 | #endif |
|
|
721 | |
|
|
722 | void inline_speed |
|
|
723 | child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status) |
|
|
724 | { |
|
|
725 | ev_child *w; |
|
|
726 | |
|
|
727 | for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
|
|
728 | if (w->pid == pid || !w->pid) |
242 | { |
729 | { |
243 | signals [sig].gotsig = 0; |
730 | ev_priority (w) = ev_priority (sw); /* need to do it *now* */ |
244 | |
731 | w->rpid = pid; |
245 | for (w = signals [sig].head; w; w = w->next) |
732 | w->rstatus = status; |
246 | event ((struct ev_watcher *)w, EV_SIGNAL); |
733 | ev_feed_event (EV_A_ (W)w, EV_CHILD); |
247 | } |
734 | } |
248 | } |
735 | } |
249 | |
736 | |
250 | static void |
737 | static void |
251 | siginit (void) |
738 | childcb (EV_P_ ev_signal *sw, int revents) |
252 | { |
739 | { |
253 | fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC); |
740 | int pid, status; |
254 | fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC); |
|
|
255 | |
741 | |
256 | /* rather than sort out wether we really need nb, set it */ |
742 | if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
257 | fcntl (sigpipe [0], F_SETFL, O_NONBLOCK); |
743 | { |
258 | fcntl (sigpipe [1], F_SETFL, O_NONBLOCK); |
744 | /* make sure we are called again until all childs have been reaped */ |
|
|
745 | /* we need to do it this way so that the callback gets called before we continue */ |
|
|
746 | ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
259 | |
747 | |
260 | evio_set (&sigev, sigpipe [0], EV_READ); |
748 | child_reap (EV_A_ sw, pid, pid, status); |
261 | evio_start (&sigev); |
749 | child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
|
|
750 | } |
262 | } |
751 | } |
|
|
752 | |
|
|
753 | #endif |
263 | |
754 | |
264 | /*****************************************************************************/ |
755 | /*****************************************************************************/ |
265 | |
756 | |
|
|
757 | #if EV_USE_PORT |
|
|
758 | # include "ev_port.c" |
|
|
759 | #endif |
|
|
760 | #if EV_USE_KQUEUE |
|
|
761 | # include "ev_kqueue.c" |
|
|
762 | #endif |
266 | #if HAVE_EPOLL |
763 | #if EV_USE_EPOLL |
267 | # include "ev_epoll.c" |
764 | # include "ev_epoll.c" |
268 | #endif |
765 | #endif |
|
|
766 | #if EV_USE_POLL |
|
|
767 | # include "ev_poll.c" |
|
|
768 | #endif |
269 | #if HAVE_SELECT |
769 | #if EV_USE_SELECT |
270 | # include "ev_select.c" |
770 | # include "ev_select.c" |
271 | #endif |
771 | #endif |
272 | |
772 | |
273 | int ev_init (int flags) |
773 | int |
|
|
774 | ev_version_major (void) |
274 | { |
775 | { |
|
|
776 | return EV_VERSION_MAJOR; |
|
|
777 | } |
|
|
778 | |
|
|
779 | int |
|
|
780 | ev_version_minor (void) |
|
|
781 | { |
|
|
782 | return EV_VERSION_MINOR; |
|
|
783 | } |
|
|
784 | |
|
|
785 | /* return true if we are running with elevated privileges and should ignore env variables */ |
|
|
786 | int inline_size |
|
|
787 | enable_secure (void) |
|
|
788 | { |
|
|
789 | #ifdef _WIN32 |
|
|
790 | return 0; |
|
|
791 | #else |
|
|
792 | return getuid () != geteuid () |
|
|
793 | || getgid () != getegid (); |
|
|
794 | #endif |
|
|
795 | } |
|
|
796 | |
|
|
797 | unsigned int |
|
|
798 | ev_supported_backends (void) |
|
|
799 | { |
|
|
800 | unsigned int flags = 0; |
|
|
801 | |
|
|
802 | if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
|
|
803 | if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
|
|
804 | if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
|
|
805 | if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
|
|
806 | if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
|
|
807 | |
|
|
808 | return flags; |
|
|
809 | } |
|
|
810 | |
|
|
811 | unsigned int |
|
|
812 | ev_recommended_backends (void) |
|
|
813 | { |
|
|
814 | unsigned int flags = ev_supported_backends (); |
|
|
815 | |
|
|
816 | #ifndef __NetBSD__ |
|
|
817 | /* kqueue is borked on everything but netbsd apparently */ |
|
|
818 | /* it usually doesn't work correctly on anything but sockets and pipes */ |
|
|
819 | flags &= ~EVBACKEND_KQUEUE; |
|
|
820 | #endif |
|
|
821 | #ifdef __APPLE__ |
|
|
822 | // flags &= ~EVBACKEND_KQUEUE; for documentation |
|
|
823 | flags &= ~EVBACKEND_POLL; |
|
|
824 | #endif |
|
|
825 | |
|
|
826 | return flags; |
|
|
827 | } |
|
|
828 | |
|
|
829 | unsigned int |
|
|
830 | ev_embeddable_backends (void) |
|
|
831 | { |
|
|
832 | return EVBACKEND_EPOLL |
|
|
833 | | EVBACKEND_KQUEUE |
|
|
834 | | EVBACKEND_PORT; |
|
|
835 | } |
|
|
836 | |
|
|
837 | unsigned int |
|
|
838 | ev_backend (EV_P) |
|
|
839 | { |
|
|
840 | return backend; |
|
|
841 | } |
|
|
842 | |
|
|
843 | static void |
|
|
844 | loop_init (EV_P_ unsigned int flags) |
|
|
845 | { |
|
|
846 | if (!backend) |
|
|
847 | { |
275 | #if HAVE_MONOTONIC |
848 | #if EV_USE_MONOTONIC |
276 | { |
849 | { |
277 | struct timespec ts; |
850 | struct timespec ts; |
278 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
851 | if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
279 | have_monotonic = 1; |
852 | have_monotonic = 1; |
280 | } |
853 | } |
281 | #endif |
854 | #endif |
282 | |
855 | |
283 | ev_now = ev_time (); |
856 | ev_rt_now = ev_time (); |
284 | now = get_clock (); |
857 | mn_now = get_clock (); |
285 | diff = ev_now - now; |
858 | now_floor = mn_now; |
|
|
859 | rtmn_diff = ev_rt_now - mn_now; |
286 | |
860 | |
|
|
861 | if (!(flags & EVFLAG_NOENV) |
|
|
862 | && !enable_secure () |
|
|
863 | && getenv ("LIBEV_FLAGS")) |
|
|
864 | flags = atoi (getenv ("LIBEV_FLAGS")); |
|
|
865 | |
|
|
866 | if (!(flags & 0x0000ffffUL)) |
|
|
867 | flags |= ev_recommended_backends (); |
|
|
868 | |
|
|
869 | backend = 0; |
|
|
870 | #if EV_USE_PORT |
|
|
871 | if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
|
|
872 | #endif |
|
|
873 | #if EV_USE_KQUEUE |
|
|
874 | if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
|
|
875 | #endif |
|
|
876 | #if EV_USE_EPOLL |
|
|
877 | if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
|
|
878 | #endif |
|
|
879 | #if EV_USE_POLL |
|
|
880 | if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
|
|
881 | #endif |
|
|
882 | #if EV_USE_SELECT |
|
|
883 | if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
|
|
884 | #endif |
|
|
885 | |
|
|
886 | ev_init (&sigev, sigcb); |
|
|
887 | ev_set_priority (&sigev, EV_MAXPRI); |
|
|
888 | } |
|
|
889 | } |
|
|
890 | |
|
|
891 | static void |
|
|
892 | loop_destroy (EV_P) |
|
|
893 | { |
|
|
894 | int i; |
|
|
895 | |
|
|
896 | #if EV_USE_PORT |
|
|
897 | if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
|
|
898 | #endif |
|
|
899 | #if EV_USE_KQUEUE |
|
|
900 | if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
|
|
901 | #endif |
|
|
902 | #if EV_USE_EPOLL |
|
|
903 | if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
|
|
904 | #endif |
|
|
905 | #if EV_USE_POLL |
|
|
906 | if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
|
|
907 | #endif |
|
|
908 | #if EV_USE_SELECT |
|
|
909 | if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
|
|
910 | #endif |
|
|
911 | |
|
|
912 | for (i = NUMPRI; i--; ) |
|
|
913 | array_free (pending, [i]); |
|
|
914 | |
|
|
915 | /* have to use the microsoft-never-gets-it-right macro */ |
|
|
916 | array_free (fdchange, EMPTY0); |
|
|
917 | array_free (timer, EMPTY0); |
|
|
918 | #if EV_PERIODIC_ENABLE |
|
|
919 | array_free (periodic, EMPTY0); |
|
|
920 | #endif |
|
|
921 | array_free (idle, EMPTY0); |
|
|
922 | array_free (prepare, EMPTY0); |
|
|
923 | array_free (check, EMPTY0); |
|
|
924 | |
|
|
925 | backend = 0; |
|
|
926 | } |
|
|
927 | |
|
|
928 | static void |
|
|
929 | loop_fork (EV_P) |
|
|
930 | { |
|
|
931 | #if EV_USE_PORT |
|
|
932 | if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
|
|
933 | #endif |
|
|
934 | #if EV_USE_KQUEUE |
|
|
935 | if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
|
|
936 | #endif |
|
|
937 | #if EV_USE_EPOLL |
|
|
938 | if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
|
|
939 | #endif |
|
|
940 | |
|
|
941 | if (ev_is_active (&sigev)) |
|
|
942 | { |
|
|
943 | /* default loop */ |
|
|
944 | |
|
|
945 | ev_ref (EV_A); |
|
|
946 | ev_io_stop (EV_A_ &sigev); |
|
|
947 | close (sigpipe [0]); |
|
|
948 | close (sigpipe [1]); |
|
|
949 | |
|
|
950 | while (pipe (sigpipe)) |
|
|
951 | syserr ("(libev) error creating pipe"); |
|
|
952 | |
|
|
953 | siginit (EV_A); |
|
|
954 | } |
|
|
955 | |
|
|
956 | postfork = 0; |
|
|
957 | } |
|
|
958 | |
|
|
959 | #if EV_MULTIPLICITY |
|
|
960 | struct ev_loop * |
|
|
961 | ev_loop_new (unsigned int flags) |
|
|
962 | { |
|
|
963 | struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
|
|
964 | |
|
|
965 | memset (loop, 0, sizeof (struct ev_loop)); |
|
|
966 | |
|
|
967 | loop_init (EV_A_ flags); |
|
|
968 | |
|
|
969 | if (ev_backend (EV_A)) |
|
|
970 | return loop; |
|
|
971 | |
|
|
972 | return 0; |
|
|
973 | } |
|
|
974 | |
|
|
975 | void |
|
|
976 | ev_loop_destroy (EV_P) |
|
|
977 | { |
|
|
978 | loop_destroy (EV_A); |
|
|
979 | ev_free (loop); |
|
|
980 | } |
|
|
981 | |
|
|
982 | void |
|
|
983 | ev_loop_fork (EV_P) |
|
|
984 | { |
|
|
985 | postfork = 1; |
|
|
986 | } |
|
|
987 | |
|
|
988 | #endif |
|
|
989 | |
|
|
990 | #if EV_MULTIPLICITY |
|
|
991 | struct ev_loop * |
|
|
992 | ev_default_loop_init (unsigned int flags) |
|
|
993 | #else |
|
|
994 | int |
|
|
995 | ev_default_loop (unsigned int flags) |
|
|
996 | #endif |
|
|
997 | { |
|
|
998 | if (sigpipe [0] == sigpipe [1]) |
287 | if (pipe (sigpipe)) |
999 | if (pipe (sigpipe)) |
288 | return 0; |
1000 | return 0; |
289 | |
1001 | |
290 | ev_method = EVMETHOD_NONE; |
1002 | if (!ev_default_loop_ptr) |
291 | #if HAVE_EPOLL |
|
|
292 | if (ev_method == EVMETHOD_NONE) epoll_init (flags); |
|
|
293 | #endif |
|
|
294 | #if HAVE_SELECT |
|
|
295 | if (ev_method == EVMETHOD_NONE) select_init (flags); |
|
|
296 | #endif |
|
|
297 | |
|
|
298 | if (ev_method) |
|
|
299 | { |
1003 | { |
300 | evw_init (&sigev, sigcb, 0); |
1004 | #if EV_MULTIPLICITY |
|
|
1005 | struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
|
|
1006 | #else |
|
|
1007 | ev_default_loop_ptr = 1; |
|
|
1008 | #endif |
|
|
1009 | |
|
|
1010 | loop_init (EV_A_ flags); |
|
|
1011 | |
|
|
1012 | if (ev_backend (EV_A)) |
|
|
1013 | { |
301 | siginit (); |
1014 | siginit (EV_A); |
302 | } |
|
|
303 | |
1015 | |
304 | return ev_method; |
1016 | #ifndef _WIN32 |
|
|
1017 | ev_signal_init (&childev, childcb, SIGCHLD); |
|
|
1018 | ev_set_priority (&childev, EV_MAXPRI); |
|
|
1019 | ev_signal_start (EV_A_ &childev); |
|
|
1020 | ev_unref (EV_A); /* child watcher should not keep loop alive */ |
|
|
1021 | #endif |
|
|
1022 | } |
|
|
1023 | else |
|
|
1024 | ev_default_loop_ptr = 0; |
|
|
1025 | } |
|
|
1026 | |
|
|
1027 | return ev_default_loop_ptr; |
|
|
1028 | } |
|
|
1029 | |
|
|
1030 | void |
|
|
1031 | ev_default_destroy (void) |
|
|
1032 | { |
|
|
1033 | #if EV_MULTIPLICITY |
|
|
1034 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1035 | #endif |
|
|
1036 | |
|
|
1037 | #ifndef _WIN32 |
|
|
1038 | ev_ref (EV_A); /* child watcher */ |
|
|
1039 | ev_signal_stop (EV_A_ &childev); |
|
|
1040 | #endif |
|
|
1041 | |
|
|
1042 | ev_ref (EV_A); /* signal watcher */ |
|
|
1043 | ev_io_stop (EV_A_ &sigev); |
|
|
1044 | |
|
|
1045 | close (sigpipe [0]); sigpipe [0] = 0; |
|
|
1046 | close (sigpipe [1]); sigpipe [1] = 0; |
|
|
1047 | |
|
|
1048 | loop_destroy (EV_A); |
|
|
1049 | } |
|
|
1050 | |
|
|
1051 | void |
|
|
1052 | ev_default_fork (void) |
|
|
1053 | { |
|
|
1054 | #if EV_MULTIPLICITY |
|
|
1055 | struct ev_loop *loop = ev_default_loop_ptr; |
|
|
1056 | #endif |
|
|
1057 | |
|
|
1058 | if (backend) |
|
|
1059 | postfork = 1; |
305 | } |
1060 | } |
306 | |
1061 | |
307 | /*****************************************************************************/ |
1062 | /*****************************************************************************/ |
308 | |
1063 | |
309 | void ev_prefork (void) |
1064 | int inline_size |
|
|
1065 | any_pending (EV_P) |
310 | { |
1066 | { |
311 | } |
|
|
312 | |
|
|
313 | void ev_postfork_parent (void) |
|
|
314 | { |
|
|
315 | } |
|
|
316 | |
|
|
317 | void ev_postfork_child (void) |
|
|
318 | { |
|
|
319 | #if HAVE_EPOLL |
|
|
320 | if (ev_method == EVMETHOD_EPOLL) |
|
|
321 | epoll_postfork_child (); |
|
|
322 | #endif |
|
|
323 | |
|
|
324 | evio_stop (&sigev); |
|
|
325 | close (sigpipe [0]); |
|
|
326 | close (sigpipe [1]); |
|
|
327 | pipe (sigpipe); |
|
|
328 | siginit (); |
|
|
329 | } |
|
|
330 | |
|
|
331 | /*****************************************************************************/ |
|
|
332 | |
|
|
333 | static ev_hook hooks [EVHOOK_NUM]; |
|
|
334 | |
|
|
335 | void |
|
|
336 | ev_hook_register (int type, ev_hook hook) |
|
|
337 | { |
|
|
338 | hooks [type] = hook; |
|
|
339 | } |
|
|
340 | |
|
|
341 | void |
|
|
342 | ev_hook_unregister (int type, ev_hook hook) |
|
|
343 | { |
|
|
344 | hooks [type] = 0; |
|
|
345 | } |
|
|
346 | |
|
|
347 | static void |
|
|
348 | hook_call (int type) |
|
|
349 | { |
|
|
350 | if (hooks [type]) |
|
|
351 | hooks [type] (); |
|
|
352 | } |
|
|
353 | |
|
|
354 | static void |
|
|
355 | fd_reify (void) |
|
|
356 | { |
|
|
357 | int i; |
1067 | int pri; |
358 | |
1068 | |
359 | for (i = 0; i < fdchangecnt; ++i) |
1069 | for (pri = NUMPRI; pri--; ) |
|
|
1070 | if (pendingcnt [pri]) |
|
|
1071 | return 1; |
|
|
1072 | |
|
|
1073 | return 0; |
|
|
1074 | } |
|
|
1075 | |
|
|
1076 | void inline_speed |
|
|
1077 | call_pending (EV_P) |
|
|
1078 | { |
|
|
1079 | int pri; |
|
|
1080 | |
|
|
1081 | for (pri = NUMPRI; pri--; ) |
|
|
1082 | while (pendingcnt [pri]) |
360 | { |
1083 | { |
361 | int fd = fdchanges [i]; |
1084 | ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
362 | ANFD *anfd = anfds + fd; |
|
|
363 | struct ev_io *w; |
|
|
364 | |
1085 | |
365 | int wev = 0; |
1086 | if (expect_true (p->w)) |
366 | |
|
|
367 | for (w = anfd->head; w; w = w->next) |
|
|
368 | wev |= w->events; |
|
|
369 | |
|
|
370 | if (anfd->wev != wev) |
|
|
371 | { |
1087 | { |
372 | method_modify (fd, anfd->wev, wev); |
1088 | assert (("non-pending watcher on pending list", p->w->pending)); |
373 | anfd->wev = wev; |
|
|
374 | } |
|
|
375 | } |
|
|
376 | |
1089 | |
377 | fdchangecnt = 0; |
|
|
378 | } |
|
|
379 | |
|
|
380 | static void |
|
|
381 | call_pending () |
|
|
382 | { |
|
|
383 | int i; |
|
|
384 | |
|
|
385 | for (i = 0; i < pendingcnt; ++i) |
|
|
386 | { |
|
|
387 | ANPENDING *p = pendings + i; |
|
|
388 | |
|
|
389 | if (p->w) |
|
|
390 | { |
|
|
391 | p->w->pending = 0; |
1090 | p->w->pending = 0; |
392 | p->w->cb (p->w, p->events); |
1091 | EV_CB_INVOKE (p->w, p->events); |
393 | } |
1092 | } |
394 | } |
1093 | } |
395 | |
|
|
396 | pendingcnt = 0; |
|
|
397 | } |
1094 | } |
398 | |
1095 | |
399 | static void |
1096 | void inline_size |
400 | timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now) |
1097 | timers_reify (EV_P) |
401 | { |
1098 | { |
402 | while (timercnt && timers [0]->at <= now) |
1099 | while (timercnt && ((WT)timers [0])->at <= mn_now) |
403 | { |
1100 | { |
404 | struct ev_timer *w = timers [0]; |
1101 | ev_timer *w = timers [0]; |
|
|
1102 | |
|
|
1103 | assert (("inactive timer on timer heap detected", ev_is_active (w))); |
405 | |
1104 | |
406 | /* first reschedule or stop timer */ |
1105 | /* first reschedule or stop timer */ |
407 | if (w->repeat) |
1106 | if (w->repeat) |
408 | { |
1107 | { |
409 | if (w->is_abs) |
1108 | assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
410 | w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat; |
1109 | |
411 | else |
|
|
412 | w->at = now + w->repeat; |
1110 | ((WT)w)->at += w->repeat; |
|
|
1111 | if (((WT)w)->at < mn_now) |
|
|
1112 | ((WT)w)->at = mn_now; |
413 | |
1113 | |
414 | assert (w->at > now); |
|
|
415 | |
|
|
416 | downheap (timers, timercnt, 0); |
1114 | downheap ((WT *)timers, timercnt, 0); |
417 | } |
1115 | } |
418 | else |
1116 | else |
|
|
1117 | ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
|
|
1118 | |
|
|
1119 | ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
|
|
1120 | } |
|
|
1121 | } |
|
|
1122 | |
|
|
1123 | #if EV_PERIODIC_ENABLE |
|
|
1124 | void inline_size |
|
|
1125 | periodics_reify (EV_P) |
|
|
1126 | { |
|
|
1127 | while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now) |
|
|
1128 | { |
|
|
1129 | ev_periodic *w = periodics [0]; |
|
|
1130 | |
|
|
1131 | assert (("inactive timer on periodic heap detected", ev_is_active (w))); |
|
|
1132 | |
|
|
1133 | /* first reschedule or stop timer */ |
|
|
1134 | if (w->reschedule_cb) |
419 | { |
1135 | { |
420 | evtimer_stop (w); /* nonrepeating: stop timer */ |
1136 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001); |
421 | --timercnt; /* maybe pass by reference instead? */ |
1137 | assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now)); |
|
|
1138 | downheap ((WT *)periodics, periodiccnt, 0); |
422 | } |
1139 | } |
|
|
1140 | else if (w->interval) |
|
|
1141 | { |
|
|
1142 | ((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval; |
|
|
1143 | assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now)); |
|
|
1144 | downheap ((WT *)periodics, periodiccnt, 0); |
|
|
1145 | } |
|
|
1146 | else |
|
|
1147 | ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
423 | |
1148 | |
424 | event ((struct ev_watcher *)w, EV_TIMEOUT); |
1149 | ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
425 | } |
1150 | } |
426 | } |
1151 | } |
427 | |
1152 | |
428 | static void |
1153 | static void noinline |
429 | time_update () |
1154 | periodics_reschedule (EV_P) |
430 | { |
1155 | { |
431 | int i; |
1156 | int i; |
|
|
1157 | |
|
|
1158 | /* adjust periodics after time jump */ |
|
|
1159 | for (i = 0; i < periodiccnt; ++i) |
|
|
1160 | { |
|
|
1161 | ev_periodic *w = periodics [i]; |
|
|
1162 | |
|
|
1163 | if (w->reschedule_cb) |
|
|
1164 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1165 | else if (w->interval) |
|
|
1166 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1167 | } |
|
|
1168 | |
|
|
1169 | /* now rebuild the heap */ |
|
|
1170 | for (i = periodiccnt >> 1; i--; ) |
|
|
1171 | downheap ((WT *)periodics, periodiccnt, i); |
|
|
1172 | } |
|
|
1173 | #endif |
|
|
1174 | |
|
|
1175 | int inline_size |
|
|
1176 | time_update_monotonic (EV_P) |
|
|
1177 | { |
|
|
1178 | mn_now = get_clock (); |
|
|
1179 | |
|
|
1180 | if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
|
|
1181 | { |
|
|
1182 | ev_rt_now = rtmn_diff + mn_now; |
|
|
1183 | return 0; |
|
|
1184 | } |
|
|
1185 | else |
|
|
1186 | { |
|
|
1187 | now_floor = mn_now; |
432 | ev_now = ev_time (); |
1188 | ev_rt_now = ev_time (); |
433 | |
1189 | return 1; |
434 | if (have_monotonic) |
|
|
435 | { |
1190 | } |
436 | ev_tstamp odiff = diff; |
1191 | } |
437 | |
1192 | |
438 | /* detecting time jumps is much more difficult */ |
1193 | void inline_size |
439 | for (i = 2; --i; ) /* loop a few times, before making important decisions */ |
1194 | time_update (EV_P) |
|
|
1195 | { |
|
|
1196 | int i; |
|
|
1197 | |
|
|
1198 | #if EV_USE_MONOTONIC |
|
|
1199 | if (expect_true (have_monotonic)) |
|
|
1200 | { |
|
|
1201 | if (time_update_monotonic (EV_A)) |
440 | { |
1202 | { |
441 | now = get_clock (); |
1203 | ev_tstamp odiff = rtmn_diff; |
|
|
1204 | |
|
|
1205 | /* loop a few times, before making important decisions. |
|
|
1206 | * on the choice of "4": one iteration isn't enough, |
|
|
1207 | * in case we get preempted during the calls to |
|
|
1208 | * ev_time and get_clock. a second call is almost guarenteed |
|
|
1209 | * to succeed in that case, though. and looping a few more times |
|
|
1210 | * doesn't hurt either as we only do this on time-jumps or |
|
|
1211 | * in the unlikely event of getting preempted here. |
|
|
1212 | */ |
|
|
1213 | for (i = 4; --i; ) |
|
|
1214 | { |
442 | diff = ev_now - now; |
1215 | rtmn_diff = ev_rt_now - mn_now; |
443 | |
1216 | |
444 | if (fabs (odiff - diff) < MIN_TIMEJUMP) |
1217 | if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP) |
445 | return; /* all is well */ |
1218 | return; /* all is well */ |
446 | |
1219 | |
447 | ev_now = ev_time (); |
1220 | ev_rt_now = ev_time (); |
|
|
1221 | mn_now = get_clock (); |
|
|
1222 | now_floor = mn_now; |
|
|
1223 | } |
|
|
1224 | |
|
|
1225 | # if EV_PERIODIC_ENABLE |
|
|
1226 | periodics_reschedule (EV_A); |
|
|
1227 | # endif |
|
|
1228 | /* no timer adjustment, as the monotonic clock doesn't jump */ |
|
|
1229 | /* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
448 | } |
1230 | } |
|
|
1231 | } |
|
|
1232 | else |
|
|
1233 | #endif |
|
|
1234 | { |
|
|
1235 | ev_rt_now = ev_time (); |
449 | |
1236 | |
450 | /* time jump detected, reschedule atimers */ |
1237 | if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP)) |
451 | for (i = 0; i < atimercnt; ++i) |
|
|
452 | { |
1238 | { |
453 | struct ev_timer *w = atimers [i]; |
1239 | #if EV_PERIODIC_ENABLE |
454 | w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat; |
1240 | periodics_reschedule (EV_A); |
|
|
1241 | #endif |
|
|
1242 | |
|
|
1243 | /* adjust timers. this is easy, as the offset is the same for all */ |
|
|
1244 | for (i = 0; i < timercnt; ++i) |
|
|
1245 | ((WT)timers [i])->at += ev_rt_now - mn_now; |
455 | } |
1246 | } |
456 | } |
|
|
457 | else |
|
|
458 | { |
|
|
459 | if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP) |
|
|
460 | /* time jump detected, adjust rtimers */ |
|
|
461 | for (i = 0; i < rtimercnt; ++i) |
|
|
462 | rtimers [i]->at += ev_now - now; |
|
|
463 | |
1247 | |
464 | now = ev_now; |
1248 | mn_now = ev_rt_now; |
465 | } |
|
|
466 | } |
|
|
467 | |
|
|
468 | int ev_loop_done; |
|
|
469 | |
|
|
470 | void ev_loop (int flags) |
|
|
471 | { |
|
|
472 | double block; |
|
|
473 | ev_loop_done = flags & EVLOOP_ONESHOT; |
|
|
474 | |
|
|
475 | do |
|
|
476 | { |
1249 | } |
477 | hook_call (EVHOOK_PREPOLL); |
1250 | } |
|
|
1251 | |
|
|
1252 | void |
|
|
1253 | ev_ref (EV_P) |
|
|
1254 | { |
|
|
1255 | ++activecnt; |
|
|
1256 | } |
|
|
1257 | |
|
|
1258 | void |
|
|
1259 | ev_unref (EV_P) |
|
|
1260 | { |
|
|
1261 | --activecnt; |
|
|
1262 | } |
|
|
1263 | |
|
|
1264 | static int loop_done; |
|
|
1265 | |
|
|
1266 | void |
|
|
1267 | ev_loop (EV_P_ int flags) |
|
|
1268 | { |
|
|
1269 | loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) |
|
|
1270 | ? EVUNLOOP_ONE |
|
|
1271 | : EVUNLOOP_CANCEL; |
|
|
1272 | |
|
|
1273 | while (activecnt) |
|
|
1274 | { |
|
|
1275 | /* queue check watchers (and execute them) */ |
|
|
1276 | if (expect_false (preparecnt)) |
|
|
1277 | { |
|
|
1278 | queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
|
|
1279 | call_pending (EV_A); |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | /* we might have forked, so reify kernel state if necessary */ |
|
|
1283 | if (expect_false (postfork)) |
|
|
1284 | loop_fork (EV_A); |
478 | |
1285 | |
479 | /* update fd-related kernel structures */ |
1286 | /* update fd-related kernel structures */ |
480 | fd_reify (); |
1287 | fd_reify (EV_A); |
481 | |
1288 | |
482 | /* calculate blocking time */ |
1289 | /* calculate blocking time */ |
|
|
1290 | { |
|
|
1291 | double block; |
|
|
1292 | |
483 | if (flags & EVLOOP_NONBLOCK) |
1293 | if (flags & EVLOOP_NONBLOCK || idlecnt) |
484 | block = 0.; |
1294 | block = 0.; /* do not block at all */ |
485 | else |
1295 | else |
486 | { |
1296 | { |
|
|
1297 | /* update time to cancel out callback processing overhead */ |
|
|
1298 | #if EV_USE_MONOTONIC |
|
|
1299 | if (expect_true (have_monotonic)) |
|
|
1300 | time_update_monotonic (EV_A); |
|
|
1301 | else |
|
|
1302 | #endif |
|
|
1303 | { |
|
|
1304 | ev_rt_now = ev_time (); |
|
|
1305 | mn_now = ev_rt_now; |
|
|
1306 | } |
|
|
1307 | |
487 | block = MAX_BLOCKTIME; |
1308 | block = MAX_BLOCKTIME; |
488 | |
1309 | |
489 | if (rtimercnt) |
1310 | if (timercnt) |
490 | { |
1311 | { |
491 | ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge; |
1312 | ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge; |
492 | if (block > to) block = to; |
1313 | if (block > to) block = to; |
493 | } |
1314 | } |
494 | |
1315 | |
|
|
1316 | #if EV_PERIODIC_ENABLE |
495 | if (atimercnt) |
1317 | if (periodiccnt) |
496 | { |
1318 | { |
497 | ev_tstamp to = atimers [0]->at - ev_time () + method_fudge; |
1319 | ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge; |
498 | if (block > to) block = to; |
1320 | if (block > to) block = to; |
499 | } |
1321 | } |
|
|
1322 | #endif |
500 | |
1323 | |
501 | if (block < 0.) block = 0.; |
1324 | if (expect_false (block < 0.)) block = 0.; |
502 | } |
1325 | } |
503 | |
1326 | |
504 | method_poll (block); |
1327 | backend_poll (EV_A_ block); |
|
|
1328 | } |
505 | |
1329 | |
506 | /* update ev_now, do magic */ |
1330 | /* update ev_rt_now, do magic */ |
507 | time_update (); |
1331 | time_update (EV_A); |
508 | |
1332 | |
509 | hook_call (EVHOOK_POSTPOLL); |
|
|
510 | |
|
|
511 | /* put pending timers into pendign queue and reschedule them */ |
1333 | /* queue pending timers and reschedule them */ |
512 | /* absolute timers first */ |
1334 | timers_reify (EV_A); /* relative timers called last */ |
513 | timers_reify (atimers, atimercnt, ev_now); |
1335 | #if EV_PERIODIC_ENABLE |
514 | /* relative timers second */ |
1336 | periodics_reify (EV_A); /* absolute timers called first */ |
515 | timers_reify (rtimers, rtimercnt, now); |
1337 | #endif |
516 | |
1338 | |
|
|
1339 | /* queue idle watchers unless other events are pending */ |
|
|
1340 | if (idlecnt && !any_pending (EV_A)) |
|
|
1341 | queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE); |
|
|
1342 | |
|
|
1343 | /* queue check watchers, to be executed first */ |
|
|
1344 | if (expect_false (checkcnt)) |
|
|
1345 | queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
|
|
1346 | |
517 | call_pending (); |
1347 | call_pending (EV_A); |
|
|
1348 | |
|
|
1349 | if (expect_false (loop_done)) |
|
|
1350 | break; |
518 | } |
1351 | } |
519 | while (!ev_loop_done); |
1352 | |
|
|
1353 | if (loop_done == EVUNLOOP_ONE) |
|
|
1354 | loop_done = EVUNLOOP_CANCEL; |
|
|
1355 | } |
|
|
1356 | |
|
|
1357 | void |
|
|
1358 | ev_unloop (EV_P_ int how) |
|
|
1359 | { |
|
|
1360 | loop_done = how; |
520 | } |
1361 | } |
521 | |
1362 | |
522 | /*****************************************************************************/ |
1363 | /*****************************************************************************/ |
523 | |
1364 | |
524 | static void |
1365 | void inline_size |
525 | wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1366 | wlist_add (WL *head, WL elem) |
526 | { |
1367 | { |
527 | elem->next = *head; |
1368 | elem->next = *head; |
528 | *head = elem; |
1369 | *head = elem; |
529 | } |
1370 | } |
530 | |
1371 | |
531 | static void |
1372 | void inline_size |
532 | wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem) |
1373 | wlist_del (WL *head, WL elem) |
533 | { |
1374 | { |
534 | while (*head) |
1375 | while (*head) |
535 | { |
1376 | { |
536 | if (*head == elem) |
1377 | if (*head == elem) |
537 | { |
1378 | { |
… | |
… | |
541 | |
1382 | |
542 | head = &(*head)->next; |
1383 | head = &(*head)->next; |
543 | } |
1384 | } |
544 | } |
1385 | } |
545 | |
1386 | |
546 | static void |
1387 | void inline_speed |
547 | ev_start (struct ev_watcher *w, int active) |
1388 | ev_clear_pending (EV_P_ W w) |
548 | { |
1389 | { |
|
|
1390 | if (w->pending) |
|
|
1391 | { |
|
|
1392 | pendings [ABSPRI (w)][w->pending - 1].w = 0; |
549 | w->pending = 0; |
1393 | w->pending = 0; |
|
|
1394 | } |
|
|
1395 | } |
|
|
1396 | |
|
|
1397 | void inline_speed |
|
|
1398 | ev_start (EV_P_ W w, int active) |
|
|
1399 | { |
|
|
1400 | if (w->priority < EV_MINPRI) w->priority = EV_MINPRI; |
|
|
1401 | if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI; |
|
|
1402 | |
550 | w->active = active; |
1403 | w->active = active; |
|
|
1404 | ev_ref (EV_A); |
551 | } |
1405 | } |
552 | |
1406 | |
553 | static void |
1407 | void inline_size |
554 | ev_stop (struct ev_watcher *w) |
1408 | ev_stop (EV_P_ W w) |
555 | { |
1409 | { |
556 | if (w->pending) |
1410 | ev_unref (EV_A); |
557 | pendings [w->pending - 1].w = 0; |
|
|
558 | |
|
|
559 | w->active = 0; |
1411 | w->active = 0; |
560 | /* nop */ |
|
|
561 | } |
1412 | } |
562 | |
1413 | |
563 | /*****************************************************************************/ |
1414 | /*****************************************************************************/ |
564 | |
1415 | |
565 | void |
1416 | void |
566 | evio_start (struct ev_io *w) |
1417 | ev_io_start (EV_P_ ev_io *w) |
|
|
1418 | { |
|
|
1419 | int fd = w->fd; |
|
|
1420 | |
|
|
1421 | if (expect_false (ev_is_active (w))) |
|
|
1422 | return; |
|
|
1423 | |
|
|
1424 | assert (("ev_io_start called with negative fd", fd >= 0)); |
|
|
1425 | |
|
|
1426 | ev_start (EV_A_ (W)w, 1); |
|
|
1427 | array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
|
|
1428 | wlist_add ((WL *)&anfds[fd].head, (WL)w); |
|
|
1429 | |
|
|
1430 | fd_change (EV_A_ fd); |
|
|
1431 | } |
|
|
1432 | |
|
|
1433 | void |
|
|
1434 | ev_io_stop (EV_P_ ev_io *w) |
|
|
1435 | { |
|
|
1436 | ev_clear_pending (EV_A_ (W)w); |
|
|
1437 | if (expect_false (!ev_is_active (w))) |
|
|
1438 | return; |
|
|
1439 | |
|
|
1440 | assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
|
|
1441 | |
|
|
1442 | wlist_del ((WL *)&anfds[w->fd].head, (WL)w); |
|
|
1443 | ev_stop (EV_A_ (W)w); |
|
|
1444 | |
|
|
1445 | fd_change (EV_A_ w->fd); |
|
|
1446 | } |
|
|
1447 | |
|
|
1448 | void |
|
|
1449 | ev_timer_start (EV_P_ ev_timer *w) |
|
|
1450 | { |
|
|
1451 | if (expect_false (ev_is_active (w))) |
|
|
1452 | return; |
|
|
1453 | |
|
|
1454 | ((WT)w)->at += mn_now; |
|
|
1455 | |
|
|
1456 | assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
|
|
1457 | |
|
|
1458 | ev_start (EV_A_ (W)w, ++timercnt); |
|
|
1459 | array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2); |
|
|
1460 | timers [timercnt - 1] = w; |
|
|
1461 | upheap ((WT *)timers, timercnt - 1); |
|
|
1462 | |
|
|
1463 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1464 | } |
|
|
1465 | |
|
|
1466 | void |
|
|
1467 | ev_timer_stop (EV_P_ ev_timer *w) |
|
|
1468 | { |
|
|
1469 | ev_clear_pending (EV_A_ (W)w); |
|
|
1470 | if (expect_false (!ev_is_active (w))) |
|
|
1471 | return; |
|
|
1472 | |
|
|
1473 | assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w)); |
|
|
1474 | |
|
|
1475 | if (expect_true (((W)w)->active < timercnt--)) |
|
|
1476 | { |
|
|
1477 | timers [((W)w)->active - 1] = timers [timercnt]; |
|
|
1478 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | ((WT)w)->at -= mn_now; |
|
|
1482 | |
|
|
1483 | ev_stop (EV_A_ (W)w); |
|
|
1484 | } |
|
|
1485 | |
|
|
1486 | void |
|
|
1487 | ev_timer_again (EV_P_ ev_timer *w) |
567 | { |
1488 | { |
568 | if (ev_is_active (w)) |
1489 | if (ev_is_active (w)) |
569 | return; |
|
|
570 | |
|
|
571 | int fd = w->fd; |
|
|
572 | |
|
|
573 | ev_start ((struct ev_watcher *)w, 1); |
|
|
574 | array_needsize (anfds, anfdmax, fd + 1, anfds_init); |
|
|
575 | wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w); |
|
|
576 | |
|
|
577 | ++fdchangecnt; |
|
|
578 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
579 | fdchanges [fdchangecnt - 1] = fd; |
|
|
580 | } |
|
|
581 | |
|
|
582 | void |
|
|
583 | evio_stop (struct ev_io *w) |
|
|
584 | { |
|
|
585 | if (!ev_is_active (w)) |
|
|
586 | return; |
|
|
587 | |
|
|
588 | wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w); |
|
|
589 | ev_stop ((struct ev_watcher *)w); |
|
|
590 | |
|
|
591 | ++fdchangecnt; |
|
|
592 | array_needsize (fdchanges, fdchangemax, fdchangecnt, ); |
|
|
593 | fdchanges [fdchangecnt - 1] = w->fd; |
|
|
594 | } |
|
|
595 | |
|
|
596 | void |
|
|
597 | evtimer_start (struct ev_timer *w) |
|
|
598 | { |
|
|
599 | if (ev_is_active (w)) |
|
|
600 | return; |
|
|
601 | |
|
|
602 | if (w->is_abs) |
|
|
603 | { |
1490 | { |
604 | /* this formula differs from the one in timer_reify becuse we do not round up */ |
|
|
605 | if (w->repeat) |
1491 | if (w->repeat) |
606 | w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat; |
|
|
607 | |
|
|
608 | ev_start ((struct ev_watcher *)w, ++atimercnt); |
|
|
609 | array_needsize (atimers, atimermax, atimercnt, ); |
|
|
610 | atimers [atimercnt - 1] = w; |
|
|
611 | upheap (atimers, atimercnt - 1); |
|
|
612 | } |
|
|
613 | else |
|
|
614 | { |
|
|
615 | w->at += now; |
|
|
616 | |
|
|
617 | ev_start ((struct ev_watcher *)w, ++rtimercnt); |
|
|
618 | array_needsize (rtimers, rtimermax, rtimercnt, ); |
|
|
619 | rtimers [rtimercnt - 1] = w; |
|
|
620 | upheap (rtimers, rtimercnt - 1); |
|
|
621 | } |
|
|
622 | |
|
|
623 | } |
|
|
624 | |
|
|
625 | void |
|
|
626 | evtimer_stop (struct ev_timer *w) |
|
|
627 | { |
|
|
628 | if (!ev_is_active (w)) |
|
|
629 | return; |
|
|
630 | |
|
|
631 | if (w->is_abs) |
|
|
632 | { |
|
|
633 | if (w->active < atimercnt--) |
|
|
634 | { |
1492 | { |
635 | atimers [w->active - 1] = atimers [atimercnt]; |
1493 | ((WT)w)->at = mn_now + w->repeat; |
636 | downheap (atimers, atimercnt, w->active - 1); |
1494 | adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1); |
637 | } |
1495 | } |
638 | } |
|
|
639 | else |
1496 | else |
|
|
1497 | ev_timer_stop (EV_A_ w); |
640 | { |
1498 | } |
641 | if (w->active < rtimercnt--) |
1499 | else if (w->repeat) |
642 | { |
|
|
643 | rtimers [w->active - 1] = rtimers [rtimercnt]; |
|
|
644 | downheap (rtimers, rtimercnt, w->active - 1); |
|
|
645 | } |
|
|
646 | } |
1500 | { |
647 | |
1501 | w->at = w->repeat; |
648 | ev_stop ((struct ev_watcher *)w); |
1502 | ev_timer_start (EV_A_ w); |
|
|
1503 | } |
649 | } |
1504 | } |
650 | |
1505 | |
|
|
1506 | #if EV_PERIODIC_ENABLE |
651 | void |
1507 | void |
|
|
1508 | ev_periodic_start (EV_P_ ev_periodic *w) |
|
|
1509 | { |
|
|
1510 | if (expect_false (ev_is_active (w))) |
|
|
1511 | return; |
|
|
1512 | |
|
|
1513 | if (w->reschedule_cb) |
|
|
1514 | ((WT)w)->at = w->reschedule_cb (w, ev_rt_now); |
|
|
1515 | else if (w->interval) |
|
|
1516 | { |
|
|
1517 | assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
|
|
1518 | /* this formula differs from the one in periodic_reify because we do not always round up */ |
|
|
1519 | ((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | ev_start (EV_A_ (W)w, ++periodiccnt); |
|
|
1523 | array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2); |
|
|
1524 | periodics [periodiccnt - 1] = w; |
|
|
1525 | upheap ((WT *)periodics, periodiccnt - 1); |
|
|
1526 | |
|
|
1527 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1528 | } |
|
|
1529 | |
|
|
1530 | void |
|
|
1531 | ev_periodic_stop (EV_P_ ev_periodic *w) |
|
|
1532 | { |
|
|
1533 | ev_clear_pending (EV_A_ (W)w); |
|
|
1534 | if (expect_false (!ev_is_active (w))) |
|
|
1535 | return; |
|
|
1536 | |
|
|
1537 | assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w)); |
|
|
1538 | |
|
|
1539 | if (expect_true (((W)w)->active < periodiccnt--)) |
|
|
1540 | { |
|
|
1541 | periodics [((W)w)->active - 1] = periodics [periodiccnt]; |
|
|
1542 | adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1); |
|
|
1543 | } |
|
|
1544 | |
|
|
1545 | ev_stop (EV_A_ (W)w); |
|
|
1546 | } |
|
|
1547 | |
|
|
1548 | void |
|
|
1549 | ev_periodic_again (EV_P_ ev_periodic *w) |
|
|
1550 | { |
|
|
1551 | /* TODO: use adjustheap and recalculation */ |
|
|
1552 | ev_periodic_stop (EV_A_ w); |
|
|
1553 | ev_periodic_start (EV_A_ w); |
|
|
1554 | } |
|
|
1555 | #endif |
|
|
1556 | |
|
|
1557 | void |
|
|
1558 | ev_idle_start (EV_P_ ev_idle *w) |
|
|
1559 | { |
|
|
1560 | if (expect_false (ev_is_active (w))) |
|
|
1561 | return; |
|
|
1562 | |
|
|
1563 | ev_start (EV_A_ (W)w, ++idlecnt); |
|
|
1564 | array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2); |
|
|
1565 | idles [idlecnt - 1] = w; |
|
|
1566 | } |
|
|
1567 | |
|
|
1568 | void |
|
|
1569 | ev_idle_stop (EV_P_ ev_idle *w) |
|
|
1570 | { |
|
|
1571 | ev_clear_pending (EV_A_ (W)w); |
|
|
1572 | if (expect_false (!ev_is_active (w))) |
|
|
1573 | return; |
|
|
1574 | |
|
|
1575 | { |
|
|
1576 | int active = ((W)w)->active; |
|
|
1577 | idles [active - 1] = idles [--idlecnt]; |
|
|
1578 | ((W)idles [active - 1])->active = active; |
|
|
1579 | } |
|
|
1580 | |
|
|
1581 | ev_stop (EV_A_ (W)w); |
|
|
1582 | } |
|
|
1583 | |
|
|
1584 | void |
|
|
1585 | ev_prepare_start (EV_P_ ev_prepare *w) |
|
|
1586 | { |
|
|
1587 | if (expect_false (ev_is_active (w))) |
|
|
1588 | return; |
|
|
1589 | |
|
|
1590 | ev_start (EV_A_ (W)w, ++preparecnt); |
|
|
1591 | array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
|
|
1592 | prepares [preparecnt - 1] = w; |
|
|
1593 | } |
|
|
1594 | |
|
|
1595 | void |
|
|
1596 | ev_prepare_stop (EV_P_ ev_prepare *w) |
|
|
1597 | { |
|
|
1598 | ev_clear_pending (EV_A_ (W)w); |
|
|
1599 | if (expect_false (!ev_is_active (w))) |
|
|
1600 | return; |
|
|
1601 | |
|
|
1602 | { |
|
|
1603 | int active = ((W)w)->active; |
|
|
1604 | prepares [active - 1] = prepares [--preparecnt]; |
|
|
1605 | ((W)prepares [active - 1])->active = active; |
|
|
1606 | } |
|
|
1607 | |
|
|
1608 | ev_stop (EV_A_ (W)w); |
|
|
1609 | } |
|
|
1610 | |
|
|
1611 | void |
|
|
1612 | ev_check_start (EV_P_ ev_check *w) |
|
|
1613 | { |
|
|
1614 | if (expect_false (ev_is_active (w))) |
|
|
1615 | return; |
|
|
1616 | |
|
|
1617 | ev_start (EV_A_ (W)w, ++checkcnt); |
|
|
1618 | array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
|
|
1619 | checks [checkcnt - 1] = w; |
|
|
1620 | } |
|
|
1621 | |
|
|
1622 | void |
|
|
1623 | ev_check_stop (EV_P_ ev_check *w) |
|
|
1624 | { |
|
|
1625 | ev_clear_pending (EV_A_ (W)w); |
|
|
1626 | if (expect_false (!ev_is_active (w))) |
|
|
1627 | return; |
|
|
1628 | |
|
|
1629 | { |
|
|
1630 | int active = ((W)w)->active; |
|
|
1631 | checks [active - 1] = checks [--checkcnt]; |
|
|
1632 | ((W)checks [active - 1])->active = active; |
|
|
1633 | } |
|
|
1634 | |
|
|
1635 | ev_stop (EV_A_ (W)w); |
|
|
1636 | } |
|
|
1637 | |
|
|
1638 | #ifndef SA_RESTART |
|
|
1639 | # define SA_RESTART 0 |
|
|
1640 | #endif |
|
|
1641 | |
|
|
1642 | void |
652 | evsignal_start (struct ev_signal *w) |
1643 | ev_signal_start (EV_P_ ev_signal *w) |
653 | { |
1644 | { |
|
|
1645 | #if EV_MULTIPLICITY |
|
|
1646 | assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1647 | #endif |
654 | if (ev_is_active (w)) |
1648 | if (expect_false (ev_is_active (w))) |
655 | return; |
1649 | return; |
656 | |
1650 | |
657 | ev_start ((struct ev_watcher *)w, 1); |
1651 | assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
|
|
1652 | |
|
|
1653 | ev_start (EV_A_ (W)w, 1); |
658 | array_needsize (signals, signalmax, w->signum, signals_init); |
1654 | array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
659 | wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
1655 | wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w); |
660 | |
1656 | |
661 | if (!w->next) |
1657 | if (!((WL)w)->next) |
662 | { |
1658 | { |
|
|
1659 | #if _WIN32 |
|
|
1660 | signal (w->signum, sighandler); |
|
|
1661 | #else |
663 | struct sigaction sa; |
1662 | struct sigaction sa; |
664 | sa.sa_handler = sighandler; |
1663 | sa.sa_handler = sighandler; |
665 | sigfillset (&sa.sa_mask); |
1664 | sigfillset (&sa.sa_mask); |
666 | sa.sa_flags = 0; |
1665 | sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
667 | sigaction (w->signum, &sa, 0); |
1666 | sigaction (w->signum, &sa, 0); |
|
|
1667 | #endif |
668 | } |
1668 | } |
669 | } |
1669 | } |
670 | |
1670 | |
671 | void |
1671 | void |
672 | evsignal_stop (struct ev_signal *w) |
1672 | ev_signal_stop (EV_P_ ev_signal *w) |
673 | { |
1673 | { |
|
|
1674 | ev_clear_pending (EV_A_ (W)w); |
674 | if (!ev_is_active (w)) |
1675 | if (expect_false (!ev_is_active (w))) |
675 | return; |
1676 | return; |
676 | |
1677 | |
677 | wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w); |
1678 | wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w); |
678 | ev_stop ((struct ev_watcher *)w); |
1679 | ev_stop (EV_A_ (W)w); |
679 | |
1680 | |
680 | if (!signals [w->signum - 1].head) |
1681 | if (!signals [w->signum - 1].head) |
681 | signal (w->signum, SIG_DFL); |
1682 | signal (w->signum, SIG_DFL); |
682 | } |
1683 | } |
683 | |
1684 | |
|
|
1685 | void |
|
|
1686 | ev_child_start (EV_P_ ev_child *w) |
|
|
1687 | { |
|
|
1688 | #if EV_MULTIPLICITY |
|
|
1689 | assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
|
|
1690 | #endif |
|
|
1691 | if (expect_false (ev_is_active (w))) |
|
|
1692 | return; |
|
|
1693 | |
|
|
1694 | ev_start (EV_A_ (W)w, 1); |
|
|
1695 | wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1696 | } |
|
|
1697 | |
|
|
1698 | void |
|
|
1699 | ev_child_stop (EV_P_ ev_child *w) |
|
|
1700 | { |
|
|
1701 | ev_clear_pending (EV_A_ (W)w); |
|
|
1702 | if (expect_false (!ev_is_active (w))) |
|
|
1703 | return; |
|
|
1704 | |
|
|
1705 | wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w); |
|
|
1706 | ev_stop (EV_A_ (W)w); |
|
|
1707 | } |
|
|
1708 | |
|
|
1709 | #if EV_EMBED_ENABLE |
|
|
1710 | void noinline |
|
|
1711 | ev_embed_sweep (EV_P_ ev_embed *w) |
|
|
1712 | { |
|
|
1713 | ev_loop (w->loop, EVLOOP_NONBLOCK); |
|
|
1714 | } |
|
|
1715 | |
|
|
1716 | static void |
|
|
1717 | embed_cb (EV_P_ ev_io *io, int revents) |
|
|
1718 | { |
|
|
1719 | ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
|
|
1720 | |
|
|
1721 | if (ev_cb (w)) |
|
|
1722 | ev_feed_event (EV_A_ (W)w, EV_EMBED); |
|
|
1723 | else |
|
|
1724 | ev_embed_sweep (loop, w); |
|
|
1725 | } |
|
|
1726 | |
|
|
1727 | void |
|
|
1728 | ev_embed_start (EV_P_ ev_embed *w) |
|
|
1729 | { |
|
|
1730 | if (expect_false (ev_is_active (w))) |
|
|
1731 | return; |
|
|
1732 | |
|
|
1733 | { |
|
|
1734 | struct ev_loop *loop = w->loop; |
|
|
1735 | assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
|
|
1736 | ev_io_init (&w->io, embed_cb, backend_fd, EV_READ); |
|
|
1737 | } |
|
|
1738 | |
|
|
1739 | ev_set_priority (&w->io, ev_priority (w)); |
|
|
1740 | ev_io_start (EV_A_ &w->io); |
|
|
1741 | |
|
|
1742 | ev_start (EV_A_ (W)w, 1); |
|
|
1743 | } |
|
|
1744 | |
|
|
1745 | void |
|
|
1746 | ev_embed_stop (EV_P_ ev_embed *w) |
|
|
1747 | { |
|
|
1748 | ev_clear_pending (EV_A_ (W)w); |
|
|
1749 | if (expect_false (!ev_is_active (w))) |
|
|
1750 | return; |
|
|
1751 | |
|
|
1752 | ev_io_stop (EV_A_ &w->io); |
|
|
1753 | |
|
|
1754 | ev_stop (EV_A_ (W)w); |
|
|
1755 | } |
|
|
1756 | #endif |
|
|
1757 | |
|
|
1758 | #if EV_STAT_ENABLE |
|
|
1759 | |
|
|
1760 | # ifdef _WIN32 |
|
|
1761 | # define lstat(a,b) stat(a,b) |
|
|
1762 | # endif |
|
|
1763 | |
|
|
1764 | void |
|
|
1765 | ev_stat_stat (EV_P_ ev_stat *w) |
|
|
1766 | { |
|
|
1767 | if (lstat (w->path, &w->attr) < 0) |
|
|
1768 | w->attr.st_nlink = 0; |
|
|
1769 | else if (!w->attr.st_nlink) |
|
|
1770 | w->attr.st_nlink = 1; |
|
|
1771 | } |
|
|
1772 | |
|
|
1773 | static void |
|
|
1774 | stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
|
|
1775 | { |
|
|
1776 | ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
|
|
1777 | |
|
|
1778 | /* we copy this here each the time so that */ |
|
|
1779 | /* prev has the old value when the callback gets invoked */ |
|
|
1780 | w->prev = w->attr; |
|
|
1781 | ev_stat_stat (EV_A_ w); |
|
|
1782 | |
|
|
1783 | if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata))) |
|
|
1784 | ev_feed_event (EV_A_ w, EV_STAT); |
|
|
1785 | } |
|
|
1786 | |
|
|
1787 | void |
|
|
1788 | ev_stat_start (EV_P_ ev_stat *w) |
|
|
1789 | { |
|
|
1790 | if (expect_false (ev_is_active (w))) |
|
|
1791 | return; |
|
|
1792 | |
|
|
1793 | /* since we use memcmp, we need to clear any padding data etc. */ |
|
|
1794 | memset (&w->prev, 0, sizeof (ev_statdata)); |
|
|
1795 | memset (&w->attr, 0, sizeof (ev_statdata)); |
|
|
1796 | |
|
|
1797 | ev_stat_stat (EV_A_ w); |
|
|
1798 | |
|
|
1799 | ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
|
|
1800 | ev_set_priority (&w->timer, ev_priority (w)); |
|
|
1801 | ev_timer_start (EV_A_ &w->timer); |
|
|
1802 | |
|
|
1803 | ev_start (EV_A_ (W)w, 1); |
|
|
1804 | } |
|
|
1805 | |
|
|
1806 | void |
|
|
1807 | ev_stat_stop (EV_P_ ev_stat *w) |
|
|
1808 | { |
|
|
1809 | ev_clear_pending (EV_A_ (W)w); |
|
|
1810 | if (expect_false (!ev_is_active (w))) |
|
|
1811 | return; |
|
|
1812 | |
|
|
1813 | ev_timer_stop (EV_A_ &w->timer); |
|
|
1814 | |
|
|
1815 | ev_stop (EV_A_ (W)w); |
|
|
1816 | } |
|
|
1817 | #endif |
|
|
1818 | |
684 | /*****************************************************************************/ |
1819 | /*****************************************************************************/ |
685 | #if 1 |
1820 | |
|
|
1821 | struct ev_once |
|
|
1822 | { |
|
|
1823 | ev_io io; |
|
|
1824 | ev_timer to; |
|
|
1825 | void (*cb)(int revents, void *arg); |
|
|
1826 | void *arg; |
|
|
1827 | }; |
686 | |
1828 | |
687 | static void |
1829 | static void |
688 | sin_cb (struct ev_io *w, int revents) |
1830 | once_cb (EV_P_ struct ev_once *once, int revents) |
689 | { |
1831 | { |
690 | fprintf (stderr, "sin %d, revents %d\n", w->fd, revents); |
1832 | void (*cb)(int revents, void *arg) = once->cb; |
|
|
1833 | void *arg = once->arg; |
|
|
1834 | |
|
|
1835 | ev_io_stop (EV_A_ &once->io); |
|
|
1836 | ev_timer_stop (EV_A_ &once->to); |
|
|
1837 | ev_free (once); |
|
|
1838 | |
|
|
1839 | cb (revents, arg); |
691 | } |
1840 | } |
692 | |
1841 | |
693 | static void |
1842 | static void |
694 | ocb (struct ev_timer *w, int revents) |
1843 | once_cb_io (EV_P_ ev_io *w, int revents) |
695 | { |
1844 | { |
696 | //fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data); |
1845 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
697 | evtimer_stop (w); |
|
|
698 | evtimer_start (w); |
|
|
699 | } |
1846 | } |
700 | |
1847 | |
701 | static void |
1848 | static void |
702 | scb (struct ev_signal *w, int revents) |
1849 | once_cb_to (EV_P_ ev_timer *w, int revents) |
703 | { |
1850 | { |
704 | fprintf (stderr, "signal %x,%d\n", revents, w->signum); |
1851 | once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
705 | } |
1852 | } |
706 | |
1853 | |
707 | int main (void) |
1854 | void |
|
|
1855 | ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
708 | { |
1856 | { |
709 | struct ev_io sin; |
1857 | struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
710 | |
1858 | |
711 | ev_init (0); |
1859 | if (expect_false (!once)) |
712 | |
|
|
713 | evw_init (&sin, sin_cb, 55); |
|
|
714 | evio_set (&sin, 0, EV_READ); |
|
|
715 | evio_start (&sin); |
|
|
716 | |
|
|
717 | struct ev_timer t[10000]; |
|
|
718 | |
|
|
719 | #if 1 |
|
|
720 | int i; |
|
|
721 | for (i = 0; i < 10000; ++i) |
|
|
722 | { |
|
|
723 | struct ev_timer *w = t + i; |
|
|
724 | evw_init (w, ocb, i); |
|
|
725 | evtimer_set_abs (w, drand48 (), 0.99775533); |
|
|
726 | evtimer_start (w); |
|
|
727 | if (drand48 () < 0.5) |
|
|
728 | evtimer_stop (w); |
|
|
729 | } |
1860 | { |
730 | #endif |
1861 | cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
731 | |
|
|
732 | struct ev_timer t1; |
|
|
733 | evw_init (&t1, ocb, 0); |
|
|
734 | evtimer_set_abs (&t1, 5, 10); |
|
|
735 | evtimer_start (&t1); |
|
|
736 | |
|
|
737 | struct ev_signal sig; |
|
|
738 | evw_init (&sig, scb, 65535); |
|
|
739 | evsignal_set (&sig, SIGQUIT); |
|
|
740 | evsignal_start (&sig); |
|
|
741 | |
|
|
742 | ev_loop (0); |
|
|
743 | |
|
|
744 | return 0; |
1862 | return; |
745 | } |
1863 | } |
746 | |
1864 | |
747 | #endif |
1865 | once->cb = cb; |
|
|
1866 | once->arg = arg; |
748 | |
1867 | |
|
|
1868 | ev_init (&once->io, once_cb_io); |
|
|
1869 | if (fd >= 0) |
|
|
1870 | { |
|
|
1871 | ev_io_set (&once->io, fd, events); |
|
|
1872 | ev_io_start (EV_A_ &once->io); |
|
|
1873 | } |
749 | |
1874 | |
|
|
1875 | ev_init (&once->to, once_cb_to); |
|
|
1876 | if (timeout >= 0.) |
|
|
1877 | { |
|
|
1878 | ev_timer_set (&once->to, timeout, 0.); |
|
|
1879 | ev_timer_start (EV_A_ &once->to); |
|
|
1880 | } |
|
|
1881 | } |
750 | |
1882 | |
|
|
1883 | #ifdef __cplusplus |
|
|
1884 | } |
|
|
1885 | #endif |
751 | |
1886 | |