1 |
/* |
2 |
* libev event processing core, watcher management |
3 |
* |
4 |
* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de> |
5 |
* All rights reserved. |
6 |
* |
7 |
* Redistribution and use in source and binary forms, with or without modifica- |
8 |
* tion, are permitted provided that the following conditions are met: |
9 |
* |
10 |
* 1. Redistributions of source code must retain the above copyright notice, |
11 |
* this list of conditions and the following disclaimer. |
12 |
* |
13 |
* 2. Redistributions in binary form must reproduce the above copyright |
14 |
* notice, this list of conditions and the following disclaimer in the |
15 |
* documentation and/or other materials provided with the distribution. |
16 |
* |
17 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
18 |
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER- |
19 |
* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
20 |
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE- |
21 |
* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
22 |
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
23 |
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
24 |
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH- |
25 |
* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
26 |
* OF THE POSSIBILITY OF SUCH DAMAGE. |
27 |
* |
28 |
* Alternatively, the contents of this file may be used under the terms of |
29 |
* the GNU General Public License ("GPL") version 2 or any later version, |
30 |
* in which case the provisions of the GPL are applicable instead of |
31 |
* the above. If you wish to allow the use of your version of this file |
32 |
* only under the terms of the GPL and not to allow others to use your |
33 |
* version of this file under the BSD license, indicate your decision |
34 |
* by deleting the provisions above and replace them with the notice |
35 |
* and other provisions required by the GPL. If you do not delete the |
36 |
* provisions above, a recipient may use your version of this file under |
37 |
* either the BSD or the GPL. |
38 |
*/ |
39 |
|
40 |
#ifdef __cplusplus |
41 |
extern "C" { |
42 |
#endif |
43 |
|
44 |
/* this big block deduces configuration from config.h */ |
45 |
#ifndef EV_STANDALONE |
46 |
# ifdef EV_CONFIG_H |
47 |
# include EV_CONFIG_H |
48 |
# else |
49 |
# include "config.h" |
50 |
# endif |
51 |
|
52 |
# if HAVE_CLOCK_GETTIME |
53 |
# ifndef EV_USE_MONOTONIC |
54 |
# define EV_USE_MONOTONIC 1 |
55 |
# endif |
56 |
# ifndef EV_USE_REALTIME |
57 |
# define EV_USE_REALTIME 1 |
58 |
# endif |
59 |
# else |
60 |
# ifndef EV_USE_MONOTONIC |
61 |
# define EV_USE_MONOTONIC 0 |
62 |
# endif |
63 |
# ifndef EV_USE_REALTIME |
64 |
# define EV_USE_REALTIME 0 |
65 |
# endif |
66 |
# endif |
67 |
|
68 |
# ifndef EV_USE_NANOSLEEP |
69 |
# if HAVE_NANOSLEEP |
70 |
# define EV_USE_NANOSLEEP 1 |
71 |
# else |
72 |
# define EV_USE_NANOSLEEP 0 |
73 |
# endif |
74 |
# endif |
75 |
|
76 |
# ifndef EV_USE_SELECT |
77 |
# if HAVE_SELECT && HAVE_SYS_SELECT_H |
78 |
# define EV_USE_SELECT 1 |
79 |
# else |
80 |
# define EV_USE_SELECT 0 |
81 |
# endif |
82 |
# endif |
83 |
|
84 |
# ifndef EV_USE_POLL |
85 |
# if HAVE_POLL && HAVE_POLL_H |
86 |
# define EV_USE_POLL 1 |
87 |
# else |
88 |
# define EV_USE_POLL 0 |
89 |
# endif |
90 |
# endif |
91 |
|
92 |
# ifndef EV_USE_EPOLL |
93 |
# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H |
94 |
# define EV_USE_EPOLL 1 |
95 |
# else |
96 |
# define EV_USE_EPOLL 0 |
97 |
# endif |
98 |
# endif |
99 |
|
100 |
# ifndef EV_USE_KQUEUE |
101 |
# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H |
102 |
# define EV_USE_KQUEUE 1 |
103 |
# else |
104 |
# define EV_USE_KQUEUE 0 |
105 |
# endif |
106 |
# endif |
107 |
|
108 |
# ifndef EV_USE_PORT |
109 |
# if HAVE_PORT_H && HAVE_PORT_CREATE |
110 |
# define EV_USE_PORT 1 |
111 |
# else |
112 |
# define EV_USE_PORT 0 |
113 |
# endif |
114 |
# endif |
115 |
|
116 |
# ifndef EV_USE_INOTIFY |
117 |
# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H |
118 |
# define EV_USE_INOTIFY 1 |
119 |
# else |
120 |
# define EV_USE_INOTIFY 0 |
121 |
# endif |
122 |
# endif |
123 |
|
124 |
# ifndef EV_USE_EVENTFD |
125 |
# if HAVE_EVENTFD |
126 |
# define EV_USE_EVENTFD 1 |
127 |
# else |
128 |
# define EV_USE_EVENTFD 0 |
129 |
# endif |
130 |
# endif |
131 |
|
132 |
#endif |
133 |
|
134 |
#include <math.h> |
135 |
#include <stdlib.h> |
136 |
#include <fcntl.h> |
137 |
#include <stddef.h> |
138 |
|
139 |
#include <stdio.h> |
140 |
|
141 |
#include <assert.h> |
142 |
#include <errno.h> |
143 |
#include <sys/types.h> |
144 |
#include <time.h> |
145 |
|
146 |
#include <signal.h> |
147 |
|
148 |
#ifdef EV_H |
149 |
# include EV_H |
150 |
#else |
151 |
# include "ev.h" |
152 |
#endif |
153 |
|
154 |
#ifndef _WIN32 |
155 |
# include <sys/time.h> |
156 |
# include <sys/wait.h> |
157 |
# include <unistd.h> |
158 |
#else |
159 |
# define WIN32_LEAN_AND_MEAN |
160 |
# include <windows.h> |
161 |
# ifndef EV_SELECT_IS_WINSOCKET |
162 |
# define EV_SELECT_IS_WINSOCKET 1 |
163 |
# endif |
164 |
#endif |
165 |
|
166 |
/* this block tries to deduce configuration from header-defined symbols and defaults */ |
167 |
|
168 |
#ifndef EV_USE_MONOTONIC |
169 |
# define EV_USE_MONOTONIC 0 |
170 |
#endif |
171 |
|
172 |
#ifndef EV_USE_REALTIME |
173 |
# define EV_USE_REALTIME 0 |
174 |
#endif |
175 |
|
176 |
#ifndef EV_USE_NANOSLEEP |
177 |
# define EV_USE_NANOSLEEP 0 |
178 |
#endif |
179 |
|
180 |
#ifndef EV_USE_SELECT |
181 |
# define EV_USE_SELECT 1 |
182 |
#endif |
183 |
|
184 |
#ifndef EV_USE_POLL |
185 |
# ifdef _WIN32 |
186 |
# define EV_USE_POLL 0 |
187 |
# else |
188 |
# define EV_USE_POLL 1 |
189 |
# endif |
190 |
#endif |
191 |
|
192 |
#ifndef EV_USE_EPOLL |
193 |
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
194 |
# define EV_USE_EPOLL 1 |
195 |
# else |
196 |
# define EV_USE_EPOLL 0 |
197 |
# endif |
198 |
#endif |
199 |
|
200 |
#ifndef EV_USE_KQUEUE |
201 |
# define EV_USE_KQUEUE 0 |
202 |
#endif |
203 |
|
204 |
#ifndef EV_USE_PORT |
205 |
# define EV_USE_PORT 0 |
206 |
#endif |
207 |
|
208 |
#ifndef EV_USE_INOTIFY |
209 |
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4)) |
210 |
# define EV_USE_INOTIFY 1 |
211 |
# else |
212 |
# define EV_USE_INOTIFY 0 |
213 |
# endif |
214 |
#endif |
215 |
|
216 |
#ifndef EV_PID_HASHSIZE |
217 |
# if EV_MINIMAL |
218 |
# define EV_PID_HASHSIZE 1 |
219 |
# else |
220 |
# define EV_PID_HASHSIZE 16 |
221 |
# endif |
222 |
#endif |
223 |
|
224 |
#ifndef EV_INOTIFY_HASHSIZE |
225 |
# if EV_MINIMAL |
226 |
# define EV_INOTIFY_HASHSIZE 1 |
227 |
# else |
228 |
# define EV_INOTIFY_HASHSIZE 16 |
229 |
# endif |
230 |
#endif |
231 |
|
232 |
#ifndef EV_USE_EVENTFD |
233 |
# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7)) |
234 |
# define EV_USE_EVENTFD 1 |
235 |
# else |
236 |
# define EV_USE_EVENTFD 0 |
237 |
# endif |
238 |
#endif |
239 |
|
240 |
/* this block fixes any misconfiguration where we know we run into trouble otherwise */ |
241 |
|
242 |
#ifndef CLOCK_MONOTONIC |
243 |
# undef EV_USE_MONOTONIC |
244 |
# define EV_USE_MONOTONIC 0 |
245 |
#endif |
246 |
|
247 |
#ifndef CLOCK_REALTIME |
248 |
# undef EV_USE_REALTIME |
249 |
# define EV_USE_REALTIME 0 |
250 |
#endif |
251 |
|
252 |
#if !EV_STAT_ENABLE |
253 |
# undef EV_USE_INOTIFY |
254 |
# define EV_USE_INOTIFY 0 |
255 |
#endif |
256 |
|
257 |
#if !EV_USE_NANOSLEEP |
258 |
# ifndef _WIN32 |
259 |
# include <sys/select.h> |
260 |
# endif |
261 |
#endif |
262 |
|
263 |
#if EV_USE_INOTIFY |
264 |
# include <sys/inotify.h> |
265 |
#endif |
266 |
|
267 |
#if EV_SELECT_IS_WINSOCKET |
268 |
# include <winsock.h> |
269 |
#endif |
270 |
|
271 |
#if EV_USE_EVENTFD |
272 |
/* our minimum requirement is glibc 2.7 which has the stub, but not the header */ |
273 |
# include <stdint.h> |
274 |
# ifdef __cplusplus |
275 |
extern "C" { |
276 |
# endif |
277 |
int eventfd (unsigned int initval, int flags); |
278 |
# ifdef __cplusplus |
279 |
} |
280 |
# endif |
281 |
#endif |
282 |
|
283 |
/**/ |
284 |
|
285 |
/* |
286 |
* This is used to avoid floating point rounding problems. |
287 |
* It is added to ev_rt_now when scheduling periodics |
288 |
* to ensure progress, time-wise, even when rounding |
289 |
* errors are against us. |
290 |
* This value is good at least till the year 4000. |
291 |
* Better solutions welcome. |
292 |
*/ |
293 |
#define TIME_EPSILON 0.0001220703125 /* 1/8192 */ |
294 |
|
295 |
#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */ |
296 |
#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */ |
297 |
/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */ |
298 |
|
299 |
#if __GNUC__ >= 4 |
300 |
# define expect(expr,value) __builtin_expect ((expr),(value)) |
301 |
# define noinline __attribute__ ((noinline)) |
302 |
#else |
303 |
# define expect(expr,value) (expr) |
304 |
# define noinline |
305 |
# if __STDC_VERSION__ < 199901L && __GNUC__ < 2 |
306 |
# define inline |
307 |
# endif |
308 |
#endif |
309 |
|
310 |
#define expect_false(expr) expect ((expr) != 0, 0) |
311 |
#define expect_true(expr) expect ((expr) != 0, 1) |
312 |
#define inline_size static inline |
313 |
|
314 |
#if EV_MINIMAL |
315 |
# define inline_speed static noinline |
316 |
#else |
317 |
# define inline_speed static inline |
318 |
#endif |
319 |
|
320 |
#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1) |
321 |
#define ABSPRI(w) (((W)w)->priority - EV_MINPRI) |
322 |
|
323 |
#define EMPTY /* required for microsofts broken pseudo-c compiler */ |
324 |
#define EMPTY2(a,b) /* used to suppress some warnings */ |
325 |
|
326 |
typedef ev_watcher *W; |
327 |
typedef ev_watcher_list *WL; |
328 |
typedef ev_watcher_time *WT; |
329 |
|
330 |
#define ev_active(w) ((W)(w))->active |
331 |
#define ev_at(w) ((WT)(w))->at |
332 |
|
333 |
#if EV_USE_MONOTONIC |
334 |
/* sig_atomic_t is used to avoid per-thread variables or locking but still */ |
335 |
/* giving it a reasonably high chance of working on typical architetcures */ |
336 |
static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */ |
337 |
#endif |
338 |
|
339 |
#ifdef _WIN32 |
340 |
# include "ev_win32.c" |
341 |
#endif |
342 |
|
343 |
/*****************************************************************************/ |
344 |
|
345 |
static void (*syserr_cb)(const char *msg); |
346 |
|
347 |
void |
348 |
ev_set_syserr_cb (void (*cb)(const char *msg)) |
349 |
{ |
350 |
syserr_cb = cb; |
351 |
} |
352 |
|
353 |
static void noinline |
354 |
syserr (const char *msg) |
355 |
{ |
356 |
if (!msg) |
357 |
msg = "(libev) system error"; |
358 |
|
359 |
if (syserr_cb) |
360 |
syserr_cb (msg); |
361 |
else |
362 |
{ |
363 |
perror (msg); |
364 |
abort (); |
365 |
} |
366 |
} |
367 |
|
368 |
static void * |
369 |
ev_realloc_emul (void *ptr, long size) |
370 |
{ |
371 |
/* some systems, notably openbsd and darwin, fail to properly |
372 |
* implement realloc (x, 0) (as required by both ansi c-98 and |
373 |
* the single unix specification, so work around them here. |
374 |
*/ |
375 |
|
376 |
if (size) |
377 |
return realloc (ptr, size); |
378 |
|
379 |
free (ptr); |
380 |
return 0; |
381 |
} |
382 |
|
383 |
static void *(*alloc)(void *ptr, long size) = ev_realloc_emul; |
384 |
|
385 |
void |
386 |
ev_set_allocator (void *(*cb)(void *ptr, long size)) |
387 |
{ |
388 |
alloc = cb; |
389 |
} |
390 |
|
391 |
inline_speed void * |
392 |
ev_realloc (void *ptr, long size) |
393 |
{ |
394 |
ptr = alloc (ptr, size); |
395 |
|
396 |
if (!ptr && size) |
397 |
{ |
398 |
fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size); |
399 |
abort (); |
400 |
} |
401 |
|
402 |
return ptr; |
403 |
} |
404 |
|
405 |
#define ev_malloc(size) ev_realloc (0, (size)) |
406 |
#define ev_free(ptr) ev_realloc ((ptr), 0) |
407 |
|
408 |
/*****************************************************************************/ |
409 |
|
410 |
typedef struct |
411 |
{ |
412 |
WL head; |
413 |
unsigned char events; |
414 |
unsigned char reify; |
415 |
#if EV_SELECT_IS_WINSOCKET |
416 |
SOCKET handle; |
417 |
#endif |
418 |
} ANFD; |
419 |
|
420 |
typedef struct |
421 |
{ |
422 |
W w; |
423 |
int events; |
424 |
} ANPENDING; |
425 |
|
426 |
#if EV_USE_INOTIFY |
427 |
/* hash table entry per inotify-id */ |
428 |
typedef struct |
429 |
{ |
430 |
WL head; |
431 |
} ANFS; |
432 |
#endif |
433 |
|
434 |
/* Heap Entry */ |
435 |
#define EV_HEAP_CACHE_AT 0 |
436 |
#if EV_HEAP_CACHE_AT |
437 |
typedef struct { |
438 |
WT w; |
439 |
ev_tstamp at; |
440 |
} ANHE; |
441 |
|
442 |
#define ANHE_w(he) (he).w /* access watcher, read-write */ |
443 |
#define ANHE_at(he) (he).at /* access cached at, read-only */ |
444 |
#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */ |
445 |
#else |
446 |
typedef WT ANHE; |
447 |
|
448 |
#define ANHE_w(he) (he) |
449 |
#define ANHE_at(he) (he)->at |
450 |
#define ANHE_at_set(he) |
451 |
#endif |
452 |
|
453 |
#if EV_MULTIPLICITY |
454 |
|
455 |
struct ev_loop |
456 |
{ |
457 |
ev_tstamp ev_rt_now; |
458 |
#define ev_rt_now ((loop)->ev_rt_now) |
459 |
#define VAR(name,decl) decl; |
460 |
#include "ev_vars.h" |
461 |
#undef VAR |
462 |
}; |
463 |
#include "ev_wrap.h" |
464 |
|
465 |
static struct ev_loop default_loop_struct; |
466 |
struct ev_loop *ev_default_loop_ptr; |
467 |
|
468 |
#else |
469 |
|
470 |
ev_tstamp ev_rt_now; |
471 |
#define VAR(name,decl) static decl; |
472 |
#include "ev_vars.h" |
473 |
#undef VAR |
474 |
|
475 |
static int ev_default_loop_ptr; |
476 |
|
477 |
#endif |
478 |
|
479 |
/*****************************************************************************/ |
480 |
|
481 |
ev_tstamp |
482 |
ev_time (void) |
483 |
{ |
484 |
#if EV_USE_REALTIME |
485 |
struct timespec ts; |
486 |
clock_gettime (CLOCK_REALTIME, &ts); |
487 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
488 |
#else |
489 |
struct timeval tv; |
490 |
gettimeofday (&tv, 0); |
491 |
return tv.tv_sec + tv.tv_usec * 1e-6; |
492 |
#endif |
493 |
} |
494 |
|
495 |
ev_tstamp inline_size |
496 |
get_clock (void) |
497 |
{ |
498 |
#if EV_USE_MONOTONIC |
499 |
if (expect_true (have_monotonic)) |
500 |
{ |
501 |
struct timespec ts; |
502 |
clock_gettime (CLOCK_MONOTONIC, &ts); |
503 |
return ts.tv_sec + ts.tv_nsec * 1e-9; |
504 |
} |
505 |
#endif |
506 |
|
507 |
return ev_time (); |
508 |
} |
509 |
|
510 |
#if EV_MULTIPLICITY |
511 |
ev_tstamp |
512 |
ev_now (EV_P) |
513 |
{ |
514 |
return ev_rt_now; |
515 |
} |
516 |
#endif |
517 |
|
518 |
void |
519 |
ev_sleep (ev_tstamp delay) |
520 |
{ |
521 |
if (delay > 0.) |
522 |
{ |
523 |
#if EV_USE_NANOSLEEP |
524 |
struct timespec ts; |
525 |
|
526 |
ts.tv_sec = (time_t)delay; |
527 |
ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9); |
528 |
|
529 |
nanosleep (&ts, 0); |
530 |
#elif defined(_WIN32) |
531 |
Sleep ((unsigned long)(delay * 1e3)); |
532 |
#else |
533 |
struct timeval tv; |
534 |
|
535 |
tv.tv_sec = (time_t)delay; |
536 |
tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6); |
537 |
|
538 |
select (0, 0, 0, 0, &tv); |
539 |
#endif |
540 |
} |
541 |
} |
542 |
|
543 |
/*****************************************************************************/ |
544 |
|
545 |
#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */ |
546 |
|
547 |
int inline_size |
548 |
array_nextsize (int elem, int cur, int cnt) |
549 |
{ |
550 |
int ncur = cur + 1; |
551 |
|
552 |
do |
553 |
ncur <<= 1; |
554 |
while (cnt > ncur); |
555 |
|
556 |
/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */ |
557 |
if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4) |
558 |
{ |
559 |
ncur *= elem; |
560 |
ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1); |
561 |
ncur = ncur - sizeof (void *) * 4; |
562 |
ncur /= elem; |
563 |
} |
564 |
|
565 |
return ncur; |
566 |
} |
567 |
|
568 |
static noinline void * |
569 |
array_realloc (int elem, void *base, int *cur, int cnt) |
570 |
{ |
571 |
*cur = array_nextsize (elem, *cur, cnt); |
572 |
return ev_realloc (base, elem * *cur); |
573 |
} |
574 |
|
575 |
#define array_needsize(type,base,cur,cnt,init) \ |
576 |
if (expect_false ((cnt) > (cur))) \ |
577 |
{ \ |
578 |
int ocur_ = (cur); \ |
579 |
(base) = (type *)array_realloc \ |
580 |
(sizeof (type), (base), &(cur), (cnt)); \ |
581 |
init ((base) + (ocur_), (cur) - ocur_); \ |
582 |
} |
583 |
|
584 |
#if 0 |
585 |
#define array_slim(type,stem) \ |
586 |
if (stem ## max < array_roundsize (stem ## cnt >> 2)) \ |
587 |
{ \ |
588 |
stem ## max = array_roundsize (stem ## cnt >> 1); \ |
589 |
base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\ |
590 |
fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\ |
591 |
} |
592 |
#endif |
593 |
|
594 |
#define array_free(stem, idx) \ |
595 |
ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; |
596 |
|
597 |
/*****************************************************************************/ |
598 |
|
599 |
void noinline |
600 |
ev_feed_event (EV_P_ void *w, int revents) |
601 |
{ |
602 |
W w_ = (W)w; |
603 |
int pri = ABSPRI (w_); |
604 |
|
605 |
if (expect_false (w_->pending)) |
606 |
pendings [pri][w_->pending - 1].events |= revents; |
607 |
else |
608 |
{ |
609 |
w_->pending = ++pendingcnt [pri]; |
610 |
array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2); |
611 |
pendings [pri][w_->pending - 1].w = w_; |
612 |
pendings [pri][w_->pending - 1].events = revents; |
613 |
} |
614 |
} |
615 |
|
616 |
void inline_speed |
617 |
queue_events (EV_P_ W *events, int eventcnt, int type) |
618 |
{ |
619 |
int i; |
620 |
|
621 |
for (i = 0; i < eventcnt; ++i) |
622 |
ev_feed_event (EV_A_ events [i], type); |
623 |
} |
624 |
|
625 |
/*****************************************************************************/ |
626 |
|
627 |
void inline_size |
628 |
anfds_init (ANFD *base, int count) |
629 |
{ |
630 |
while (count--) |
631 |
{ |
632 |
base->head = 0; |
633 |
base->events = EV_NONE; |
634 |
base->reify = 0; |
635 |
|
636 |
++base; |
637 |
} |
638 |
} |
639 |
|
640 |
void inline_speed |
641 |
fd_event (EV_P_ int fd, int revents) |
642 |
{ |
643 |
ANFD *anfd = anfds + fd; |
644 |
ev_io *w; |
645 |
|
646 |
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
647 |
{ |
648 |
int ev = w->events & revents; |
649 |
|
650 |
if (ev) |
651 |
ev_feed_event (EV_A_ (W)w, ev); |
652 |
} |
653 |
} |
654 |
|
655 |
void |
656 |
ev_feed_fd_event (EV_P_ int fd, int revents) |
657 |
{ |
658 |
if (fd >= 0 && fd < anfdmax) |
659 |
fd_event (EV_A_ fd, revents); |
660 |
} |
661 |
|
662 |
void inline_size |
663 |
fd_reify (EV_P) |
664 |
{ |
665 |
int i; |
666 |
|
667 |
for (i = 0; i < fdchangecnt; ++i) |
668 |
{ |
669 |
int fd = fdchanges [i]; |
670 |
ANFD *anfd = anfds + fd; |
671 |
ev_io *w; |
672 |
|
673 |
unsigned char events = 0; |
674 |
|
675 |
for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next) |
676 |
events |= (unsigned char)w->events; |
677 |
|
678 |
#if EV_SELECT_IS_WINSOCKET |
679 |
if (events) |
680 |
{ |
681 |
unsigned long argp; |
682 |
#ifdef EV_FD_TO_WIN32_HANDLE |
683 |
anfd->handle = EV_FD_TO_WIN32_HANDLE (fd); |
684 |
#else |
685 |
anfd->handle = _get_osfhandle (fd); |
686 |
#endif |
687 |
assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0)); |
688 |
} |
689 |
#endif |
690 |
|
691 |
{ |
692 |
unsigned char o_events = anfd->events; |
693 |
unsigned char o_reify = anfd->reify; |
694 |
|
695 |
anfd->reify = 0; |
696 |
anfd->events = events; |
697 |
|
698 |
if (o_events != events || o_reify & EV_IOFDSET) |
699 |
backend_modify (EV_A_ fd, o_events, events); |
700 |
} |
701 |
} |
702 |
|
703 |
fdchangecnt = 0; |
704 |
} |
705 |
|
706 |
void inline_size |
707 |
fd_change (EV_P_ int fd, int flags) |
708 |
{ |
709 |
unsigned char reify = anfds [fd].reify; |
710 |
anfds [fd].reify |= flags; |
711 |
|
712 |
if (expect_true (!reify)) |
713 |
{ |
714 |
++fdchangecnt; |
715 |
array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2); |
716 |
fdchanges [fdchangecnt - 1] = fd; |
717 |
} |
718 |
} |
719 |
|
720 |
void inline_speed |
721 |
fd_kill (EV_P_ int fd) |
722 |
{ |
723 |
ev_io *w; |
724 |
|
725 |
while ((w = (ev_io *)anfds [fd].head)) |
726 |
{ |
727 |
ev_io_stop (EV_A_ w); |
728 |
ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE); |
729 |
} |
730 |
} |
731 |
|
732 |
int inline_size |
733 |
fd_valid (int fd) |
734 |
{ |
735 |
#ifdef _WIN32 |
736 |
return _get_osfhandle (fd) != -1; |
737 |
#else |
738 |
return fcntl (fd, F_GETFD) != -1; |
739 |
#endif |
740 |
} |
741 |
|
742 |
/* called on EBADF to verify fds */ |
743 |
static void noinline |
744 |
fd_ebadf (EV_P) |
745 |
{ |
746 |
int fd; |
747 |
|
748 |
for (fd = 0; fd < anfdmax; ++fd) |
749 |
if (anfds [fd].events) |
750 |
if (!fd_valid (fd) == -1 && errno == EBADF) |
751 |
fd_kill (EV_A_ fd); |
752 |
} |
753 |
|
754 |
/* called on ENOMEM in select/poll to kill some fds and retry */ |
755 |
static void noinline |
756 |
fd_enomem (EV_P) |
757 |
{ |
758 |
int fd; |
759 |
|
760 |
for (fd = anfdmax; fd--; ) |
761 |
if (anfds [fd].events) |
762 |
{ |
763 |
fd_kill (EV_A_ fd); |
764 |
return; |
765 |
} |
766 |
} |
767 |
|
768 |
/* usually called after fork if backend needs to re-arm all fds from scratch */ |
769 |
static void noinline |
770 |
fd_rearm_all (EV_P) |
771 |
{ |
772 |
int fd; |
773 |
|
774 |
for (fd = 0; fd < anfdmax; ++fd) |
775 |
if (anfds [fd].events) |
776 |
{ |
777 |
anfds [fd].events = 0; |
778 |
fd_change (EV_A_ fd, EV_IOFDSET | 1); |
779 |
} |
780 |
} |
781 |
|
782 |
/*****************************************************************************/ |
783 |
|
784 |
/* |
785 |
* the heap functions want a real array index. array index 0 uis guaranteed to not |
786 |
* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives |
787 |
* the branching factor of the d-tree. |
788 |
*/ |
789 |
|
790 |
/* |
791 |
* at the moment we allow libev the luxury of two heaps, |
792 |
* a small-code-size 2-heap one and a ~1.5kb larger 4-heap |
793 |
* which is more cache-efficient. |
794 |
* the difference is about 5% with 50000+ watchers. |
795 |
*/ |
796 |
#define EV_USE_4HEAP !EV_MINIMAL |
797 |
#if EV_USE_4HEAP |
798 |
|
799 |
#define DHEAP 4 |
800 |
#define HEAP0 (DHEAP - 1) /* index of first element in heap */ |
801 |
|
802 |
/* towards the root */ |
803 |
void inline_speed |
804 |
upheap (ANHE *heap, int k) |
805 |
{ |
806 |
ANHE he = heap [k]; |
807 |
|
808 |
for (;;) |
809 |
{ |
810 |
int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0; |
811 |
|
812 |
if (p == k || ANHE_at (heap [p]) <= ANHE_at (he)) |
813 |
break; |
814 |
|
815 |
heap [k] = heap [p]; |
816 |
ev_active (ANHE_w (heap [k])) = k; |
817 |
k = p; |
818 |
} |
819 |
|
820 |
ev_active (ANHE_w (he)) = k; |
821 |
heap [k] = he; |
822 |
} |
823 |
|
824 |
/* away from the root */ |
825 |
void inline_speed |
826 |
downheap (ANHE *heap, int N, int k) |
827 |
{ |
828 |
ANHE he = heap [k]; |
829 |
ANHE *E = heap + N + HEAP0; |
830 |
|
831 |
for (;;) |
832 |
{ |
833 |
ev_tstamp minat; |
834 |
ANHE *minpos; |
835 |
ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0; |
836 |
|
837 |
// find minimum child |
838 |
if (expect_true (pos + DHEAP - 1 < E)) |
839 |
{ |
840 |
/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
841 |
if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
842 |
if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
843 |
if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
844 |
} |
845 |
else if (pos < E) |
846 |
{ |
847 |
/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos)); |
848 |
if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos)); |
849 |
if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos)); |
850 |
if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos)); |
851 |
} |
852 |
else |
853 |
break; |
854 |
|
855 |
if (ANHE_at (he) <= minat) |
856 |
break; |
857 |
|
858 |
ev_active (ANHE_w (*minpos)) = k; |
859 |
heap [k] = *minpos; |
860 |
|
861 |
k = minpos - heap; |
862 |
} |
863 |
|
864 |
ev_active (ANHE_w (he)) = k; |
865 |
heap [k] = he; |
866 |
} |
867 |
|
868 |
#else // 4HEAP |
869 |
|
870 |
#define HEAP0 1 |
871 |
|
872 |
/* towards the root */ |
873 |
void inline_speed |
874 |
upheap (ANHE *heap, int k) |
875 |
{ |
876 |
ANHE he = heap [k]; |
877 |
|
878 |
for (;;) |
879 |
{ |
880 |
int p = k >> 1; |
881 |
|
882 |
/* maybe we could use a dummy element at heap [0]? */ |
883 |
if (!p || ANHE_at (heap [p]) <= ANHE_at (he)) |
884 |
break; |
885 |
|
886 |
heap [k] = heap [p]; |
887 |
ev_active (ANHE_w (heap [k])) = k; |
888 |
k = p; |
889 |
} |
890 |
|
891 |
heap [k] = w; |
892 |
ev_active (ANHE_w (heap [k])) = k; |
893 |
} |
894 |
|
895 |
/* away from the root */ |
896 |
void inline_speed |
897 |
downheap (ANHE *heap, int N, int k) |
898 |
{ |
899 |
ANHE he = heap [k]; |
900 |
|
901 |
for (;;) |
902 |
{ |
903 |
int c = k << 1; |
904 |
|
905 |
if (c > N) |
906 |
break; |
907 |
|
908 |
c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1]) |
909 |
? 1 : 0; |
910 |
|
911 |
if (w->at <= ANHE_at (heap [c])) |
912 |
break; |
913 |
|
914 |
heap [k] = heap [c]; |
915 |
ev_active (ANHE_w (heap [k])) = k; |
916 |
|
917 |
k = c; |
918 |
} |
919 |
|
920 |
heap [k] = he; |
921 |
ev_active (ANHE_w (he)) = k; |
922 |
} |
923 |
#endif |
924 |
|
925 |
void inline_size |
926 |
adjustheap (ANHE *heap, int N, int k) |
927 |
{ |
928 |
upheap (heap, k); |
929 |
downheap (heap, N, k); |
930 |
} |
931 |
|
932 |
/*****************************************************************************/ |
933 |
|
934 |
typedef struct |
935 |
{ |
936 |
WL head; |
937 |
EV_ATOMIC_T gotsig; |
938 |
} ANSIG; |
939 |
|
940 |
static ANSIG *signals; |
941 |
static int signalmax; |
942 |
|
943 |
static EV_ATOMIC_T gotsig; |
944 |
|
945 |
void inline_size |
946 |
signals_init (ANSIG *base, int count) |
947 |
{ |
948 |
while (count--) |
949 |
{ |
950 |
base->head = 0; |
951 |
base->gotsig = 0; |
952 |
|
953 |
++base; |
954 |
} |
955 |
} |
956 |
|
957 |
/*****************************************************************************/ |
958 |
|
959 |
void inline_speed |
960 |
fd_intern (int fd) |
961 |
{ |
962 |
#ifdef _WIN32 |
963 |
int arg = 1; |
964 |
ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg); |
965 |
#else |
966 |
fcntl (fd, F_SETFD, FD_CLOEXEC); |
967 |
fcntl (fd, F_SETFL, O_NONBLOCK); |
968 |
#endif |
969 |
} |
970 |
|
971 |
static void noinline |
972 |
evpipe_init (EV_P) |
973 |
{ |
974 |
if (!ev_is_active (&pipeev)) |
975 |
{ |
976 |
#if EV_USE_EVENTFD |
977 |
if ((evfd = eventfd (0, 0)) >= 0) |
978 |
{ |
979 |
evpipe [0] = -1; |
980 |
fd_intern (evfd); |
981 |
ev_io_set (&pipeev, evfd, EV_READ); |
982 |
} |
983 |
else |
984 |
#endif |
985 |
{ |
986 |
while (pipe (evpipe)) |
987 |
syserr ("(libev) error creating signal/async pipe"); |
988 |
|
989 |
fd_intern (evpipe [0]); |
990 |
fd_intern (evpipe [1]); |
991 |
ev_io_set (&pipeev, evpipe [0], EV_READ); |
992 |
} |
993 |
|
994 |
ev_io_start (EV_A_ &pipeev); |
995 |
ev_unref (EV_A); /* watcher should not keep loop alive */ |
996 |
} |
997 |
} |
998 |
|
999 |
void inline_size |
1000 |
evpipe_write (EV_P_ EV_ATOMIC_T *flag) |
1001 |
{ |
1002 |
if (!*flag) |
1003 |
{ |
1004 |
int old_errno = errno; /* save errno because write might clobber it */ |
1005 |
|
1006 |
*flag = 1; |
1007 |
|
1008 |
#if EV_USE_EVENTFD |
1009 |
if (evfd >= 0) |
1010 |
{ |
1011 |
uint64_t counter = 1; |
1012 |
write (evfd, &counter, sizeof (uint64_t)); |
1013 |
} |
1014 |
else |
1015 |
#endif |
1016 |
write (evpipe [1], &old_errno, 1); |
1017 |
|
1018 |
errno = old_errno; |
1019 |
} |
1020 |
} |
1021 |
|
1022 |
static void |
1023 |
pipecb (EV_P_ ev_io *iow, int revents) |
1024 |
{ |
1025 |
#if EV_USE_EVENTFD |
1026 |
if (evfd >= 0) |
1027 |
{ |
1028 |
uint64_t counter; |
1029 |
read (evfd, &counter, sizeof (uint64_t)); |
1030 |
} |
1031 |
else |
1032 |
#endif |
1033 |
{ |
1034 |
char dummy; |
1035 |
read (evpipe [0], &dummy, 1); |
1036 |
} |
1037 |
|
1038 |
if (gotsig && ev_is_default_loop (EV_A)) |
1039 |
{ |
1040 |
int signum; |
1041 |
gotsig = 0; |
1042 |
|
1043 |
for (signum = signalmax; signum--; ) |
1044 |
if (signals [signum].gotsig) |
1045 |
ev_feed_signal_event (EV_A_ signum + 1); |
1046 |
} |
1047 |
|
1048 |
#if EV_ASYNC_ENABLE |
1049 |
if (gotasync) |
1050 |
{ |
1051 |
int i; |
1052 |
gotasync = 0; |
1053 |
|
1054 |
for (i = asynccnt; i--; ) |
1055 |
if (asyncs [i]->sent) |
1056 |
{ |
1057 |
asyncs [i]->sent = 0; |
1058 |
ev_feed_event (EV_A_ asyncs [i], EV_ASYNC); |
1059 |
} |
1060 |
} |
1061 |
#endif |
1062 |
} |
1063 |
|
1064 |
/*****************************************************************************/ |
1065 |
|
1066 |
static void |
1067 |
ev_sighandler (int signum) |
1068 |
{ |
1069 |
#if EV_MULTIPLICITY |
1070 |
struct ev_loop *loop = &default_loop_struct; |
1071 |
#endif |
1072 |
|
1073 |
#if _WIN32 |
1074 |
signal (signum, ev_sighandler); |
1075 |
#endif |
1076 |
|
1077 |
signals [signum - 1].gotsig = 1; |
1078 |
evpipe_write (EV_A_ &gotsig); |
1079 |
} |
1080 |
|
1081 |
void noinline |
1082 |
ev_feed_signal_event (EV_P_ int signum) |
1083 |
{ |
1084 |
WL w; |
1085 |
|
1086 |
#if EV_MULTIPLICITY |
1087 |
assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr)); |
1088 |
#endif |
1089 |
|
1090 |
--signum; |
1091 |
|
1092 |
if (signum < 0 || signum >= signalmax) |
1093 |
return; |
1094 |
|
1095 |
signals [signum].gotsig = 0; |
1096 |
|
1097 |
for (w = signals [signum].head; w; w = w->next) |
1098 |
ev_feed_event (EV_A_ (W)w, EV_SIGNAL); |
1099 |
} |
1100 |
|
1101 |
/*****************************************************************************/ |
1102 |
|
1103 |
static WL childs [EV_PID_HASHSIZE]; |
1104 |
|
1105 |
#ifndef _WIN32 |
1106 |
|
1107 |
static ev_signal childev; |
1108 |
|
1109 |
#ifndef WIFCONTINUED |
1110 |
# define WIFCONTINUED(status) 0 |
1111 |
#endif |
1112 |
|
1113 |
void inline_speed |
1114 |
child_reap (EV_P_ int chain, int pid, int status) |
1115 |
{ |
1116 |
ev_child *w; |
1117 |
int traced = WIFSTOPPED (status) || WIFCONTINUED (status); |
1118 |
|
1119 |
for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next) |
1120 |
{ |
1121 |
if ((w->pid == pid || !w->pid) |
1122 |
&& (!traced || (w->flags & 1))) |
1123 |
{ |
1124 |
ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */ |
1125 |
w->rpid = pid; |
1126 |
w->rstatus = status; |
1127 |
ev_feed_event (EV_A_ (W)w, EV_CHILD); |
1128 |
} |
1129 |
} |
1130 |
} |
1131 |
|
1132 |
#ifndef WCONTINUED |
1133 |
# define WCONTINUED 0 |
1134 |
#endif |
1135 |
|
1136 |
static void |
1137 |
childcb (EV_P_ ev_signal *sw, int revents) |
1138 |
{ |
1139 |
int pid, status; |
1140 |
|
1141 |
/* some systems define WCONTINUED but then fail to support it (linux 2.4) */ |
1142 |
if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED))) |
1143 |
if (!WCONTINUED |
1144 |
|| errno != EINVAL |
1145 |
|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED))) |
1146 |
return; |
1147 |
|
1148 |
/* make sure we are called again until all children have been reaped */ |
1149 |
/* we need to do it this way so that the callback gets called before we continue */ |
1150 |
ev_feed_event (EV_A_ (W)sw, EV_SIGNAL); |
1151 |
|
1152 |
child_reap (EV_A_ pid, pid, status); |
1153 |
if (EV_PID_HASHSIZE > 1) |
1154 |
child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */ |
1155 |
} |
1156 |
|
1157 |
#endif |
1158 |
|
1159 |
/*****************************************************************************/ |
1160 |
|
1161 |
#if EV_USE_PORT |
1162 |
# include "ev_port.c" |
1163 |
#endif |
1164 |
#if EV_USE_KQUEUE |
1165 |
# include "ev_kqueue.c" |
1166 |
#endif |
1167 |
#if EV_USE_EPOLL |
1168 |
# include "ev_epoll.c" |
1169 |
#endif |
1170 |
#if EV_USE_POLL |
1171 |
# include "ev_poll.c" |
1172 |
#endif |
1173 |
#if EV_USE_SELECT |
1174 |
# include "ev_select.c" |
1175 |
#endif |
1176 |
|
1177 |
int |
1178 |
ev_version_major (void) |
1179 |
{ |
1180 |
return EV_VERSION_MAJOR; |
1181 |
} |
1182 |
|
1183 |
int |
1184 |
ev_version_minor (void) |
1185 |
{ |
1186 |
return EV_VERSION_MINOR; |
1187 |
} |
1188 |
|
1189 |
/* return true if we are running with elevated privileges and should ignore env variables */ |
1190 |
int inline_size |
1191 |
enable_secure (void) |
1192 |
{ |
1193 |
#ifdef _WIN32 |
1194 |
return 0; |
1195 |
#else |
1196 |
return getuid () != geteuid () |
1197 |
|| getgid () != getegid (); |
1198 |
#endif |
1199 |
} |
1200 |
|
1201 |
unsigned int |
1202 |
ev_supported_backends (void) |
1203 |
{ |
1204 |
unsigned int flags = 0; |
1205 |
|
1206 |
if (EV_USE_PORT ) flags |= EVBACKEND_PORT; |
1207 |
if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE; |
1208 |
if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL; |
1209 |
if (EV_USE_POLL ) flags |= EVBACKEND_POLL; |
1210 |
if (EV_USE_SELECT) flags |= EVBACKEND_SELECT; |
1211 |
|
1212 |
return flags; |
1213 |
} |
1214 |
|
1215 |
unsigned int |
1216 |
ev_recommended_backends (void) |
1217 |
{ |
1218 |
unsigned int flags = ev_supported_backends (); |
1219 |
|
1220 |
#ifndef __NetBSD__ |
1221 |
/* kqueue is borked on everything but netbsd apparently */ |
1222 |
/* it usually doesn't work correctly on anything but sockets and pipes */ |
1223 |
flags &= ~EVBACKEND_KQUEUE; |
1224 |
#endif |
1225 |
#ifdef __APPLE__ |
1226 |
// flags &= ~EVBACKEND_KQUEUE; for documentation |
1227 |
flags &= ~EVBACKEND_POLL; |
1228 |
#endif |
1229 |
|
1230 |
return flags; |
1231 |
} |
1232 |
|
1233 |
unsigned int |
1234 |
ev_embeddable_backends (void) |
1235 |
{ |
1236 |
int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT; |
1237 |
|
1238 |
/* epoll embeddability broken on all linux versions up to at least 2.6.23 */ |
1239 |
/* please fix it and tell me how to detect the fix */ |
1240 |
flags &= ~EVBACKEND_EPOLL; |
1241 |
|
1242 |
return flags; |
1243 |
} |
1244 |
|
1245 |
unsigned int |
1246 |
ev_backend (EV_P) |
1247 |
{ |
1248 |
return backend; |
1249 |
} |
1250 |
|
1251 |
unsigned int |
1252 |
ev_loop_count (EV_P) |
1253 |
{ |
1254 |
return loop_count; |
1255 |
} |
1256 |
|
1257 |
void |
1258 |
ev_set_io_collect_interval (EV_P_ ev_tstamp interval) |
1259 |
{ |
1260 |
io_blocktime = interval; |
1261 |
} |
1262 |
|
1263 |
void |
1264 |
ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) |
1265 |
{ |
1266 |
timeout_blocktime = interval; |
1267 |
} |
1268 |
|
1269 |
static void noinline |
1270 |
loop_init (EV_P_ unsigned int flags) |
1271 |
{ |
1272 |
if (!backend) |
1273 |
{ |
1274 |
#if EV_USE_MONOTONIC |
1275 |
{ |
1276 |
struct timespec ts; |
1277 |
if (!clock_gettime (CLOCK_MONOTONIC, &ts)) |
1278 |
have_monotonic = 1; |
1279 |
} |
1280 |
#endif |
1281 |
|
1282 |
ev_rt_now = ev_time (); |
1283 |
mn_now = get_clock (); |
1284 |
now_floor = mn_now; |
1285 |
rtmn_diff = ev_rt_now - mn_now; |
1286 |
|
1287 |
io_blocktime = 0.; |
1288 |
timeout_blocktime = 0.; |
1289 |
backend = 0; |
1290 |
backend_fd = -1; |
1291 |
gotasync = 0; |
1292 |
#if EV_USE_INOTIFY |
1293 |
fs_fd = -2; |
1294 |
#endif |
1295 |
|
1296 |
/* pid check not overridable via env */ |
1297 |
#ifndef _WIN32 |
1298 |
if (flags & EVFLAG_FORKCHECK) |
1299 |
curpid = getpid (); |
1300 |
#endif |
1301 |
|
1302 |
if (!(flags & EVFLAG_NOENV) |
1303 |
&& !enable_secure () |
1304 |
&& getenv ("LIBEV_FLAGS")) |
1305 |
flags = atoi (getenv ("LIBEV_FLAGS")); |
1306 |
|
1307 |
if (!(flags & 0x0000ffffU)) |
1308 |
flags |= ev_recommended_backends (); |
1309 |
|
1310 |
#if EV_USE_PORT |
1311 |
if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags); |
1312 |
#endif |
1313 |
#if EV_USE_KQUEUE |
1314 |
if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags); |
1315 |
#endif |
1316 |
#if EV_USE_EPOLL |
1317 |
if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags); |
1318 |
#endif |
1319 |
#if EV_USE_POLL |
1320 |
if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags); |
1321 |
#endif |
1322 |
#if EV_USE_SELECT |
1323 |
if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags); |
1324 |
#endif |
1325 |
|
1326 |
ev_init (&pipeev, pipecb); |
1327 |
ev_set_priority (&pipeev, EV_MAXPRI); |
1328 |
} |
1329 |
} |
1330 |
|
1331 |
static void noinline |
1332 |
loop_destroy (EV_P) |
1333 |
{ |
1334 |
int i; |
1335 |
|
1336 |
if (ev_is_active (&pipeev)) |
1337 |
{ |
1338 |
ev_ref (EV_A); /* signal watcher */ |
1339 |
ev_io_stop (EV_A_ &pipeev); |
1340 |
|
1341 |
#if EV_USE_EVENTFD |
1342 |
if (evfd >= 0) |
1343 |
close (evfd); |
1344 |
#endif |
1345 |
|
1346 |
if (evpipe [0] >= 0) |
1347 |
{ |
1348 |
close (evpipe [0]); |
1349 |
close (evpipe [1]); |
1350 |
} |
1351 |
} |
1352 |
|
1353 |
#if EV_USE_INOTIFY |
1354 |
if (fs_fd >= 0) |
1355 |
close (fs_fd); |
1356 |
#endif |
1357 |
|
1358 |
if (backend_fd >= 0) |
1359 |
close (backend_fd); |
1360 |
|
1361 |
#if EV_USE_PORT |
1362 |
if (backend == EVBACKEND_PORT ) port_destroy (EV_A); |
1363 |
#endif |
1364 |
#if EV_USE_KQUEUE |
1365 |
if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A); |
1366 |
#endif |
1367 |
#if EV_USE_EPOLL |
1368 |
if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A); |
1369 |
#endif |
1370 |
#if EV_USE_POLL |
1371 |
if (backend == EVBACKEND_POLL ) poll_destroy (EV_A); |
1372 |
#endif |
1373 |
#if EV_USE_SELECT |
1374 |
if (backend == EVBACKEND_SELECT) select_destroy (EV_A); |
1375 |
#endif |
1376 |
|
1377 |
for (i = NUMPRI; i--; ) |
1378 |
{ |
1379 |
array_free (pending, [i]); |
1380 |
#if EV_IDLE_ENABLE |
1381 |
array_free (idle, [i]); |
1382 |
#endif |
1383 |
} |
1384 |
|
1385 |
ev_free (anfds); anfdmax = 0; |
1386 |
|
1387 |
/* have to use the microsoft-never-gets-it-right macro */ |
1388 |
array_free (fdchange, EMPTY); |
1389 |
array_free (timer, EMPTY); |
1390 |
#if EV_PERIODIC_ENABLE |
1391 |
array_free (periodic, EMPTY); |
1392 |
#endif |
1393 |
#if EV_FORK_ENABLE |
1394 |
array_free (fork, EMPTY); |
1395 |
#endif |
1396 |
array_free (prepare, EMPTY); |
1397 |
array_free (check, EMPTY); |
1398 |
#if EV_ASYNC_ENABLE |
1399 |
array_free (async, EMPTY); |
1400 |
#endif |
1401 |
|
1402 |
backend = 0; |
1403 |
} |
1404 |
|
1405 |
#if EV_USE_INOTIFY |
1406 |
void inline_size infy_fork (EV_P); |
1407 |
#endif |
1408 |
|
1409 |
void inline_size |
1410 |
loop_fork (EV_P) |
1411 |
{ |
1412 |
#if EV_USE_PORT |
1413 |
if (backend == EVBACKEND_PORT ) port_fork (EV_A); |
1414 |
#endif |
1415 |
#if EV_USE_KQUEUE |
1416 |
if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A); |
1417 |
#endif |
1418 |
#if EV_USE_EPOLL |
1419 |
if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A); |
1420 |
#endif |
1421 |
#if EV_USE_INOTIFY |
1422 |
infy_fork (EV_A); |
1423 |
#endif |
1424 |
|
1425 |
if (ev_is_active (&pipeev)) |
1426 |
{ |
1427 |
/* this "locks" the handlers against writing to the pipe */ |
1428 |
/* while we modify the fd vars */ |
1429 |
gotsig = 1; |
1430 |
#if EV_ASYNC_ENABLE |
1431 |
gotasync = 1; |
1432 |
#endif |
1433 |
|
1434 |
ev_ref (EV_A); |
1435 |
ev_io_stop (EV_A_ &pipeev); |
1436 |
|
1437 |
#if EV_USE_EVENTFD |
1438 |
if (evfd >= 0) |
1439 |
close (evfd); |
1440 |
#endif |
1441 |
|
1442 |
if (evpipe [0] >= 0) |
1443 |
{ |
1444 |
close (evpipe [0]); |
1445 |
close (evpipe [1]); |
1446 |
} |
1447 |
|
1448 |
evpipe_init (EV_A); |
1449 |
/* now iterate over everything, in case we missed something */ |
1450 |
pipecb (EV_A_ &pipeev, EV_READ); |
1451 |
} |
1452 |
|
1453 |
postfork = 0; |
1454 |
} |
1455 |
|
1456 |
#if EV_MULTIPLICITY |
1457 |
struct ev_loop * |
1458 |
ev_loop_new (unsigned int flags) |
1459 |
{ |
1460 |
struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop)); |
1461 |
|
1462 |
memset (loop, 0, sizeof (struct ev_loop)); |
1463 |
|
1464 |
loop_init (EV_A_ flags); |
1465 |
|
1466 |
if (ev_backend (EV_A)) |
1467 |
return loop; |
1468 |
|
1469 |
return 0; |
1470 |
} |
1471 |
|
1472 |
void |
1473 |
ev_loop_destroy (EV_P) |
1474 |
{ |
1475 |
loop_destroy (EV_A); |
1476 |
ev_free (loop); |
1477 |
} |
1478 |
|
1479 |
void |
1480 |
ev_loop_fork (EV_P) |
1481 |
{ |
1482 |
postfork = 1; /* must be in line with ev_default_fork */ |
1483 |
} |
1484 |
#endif |
1485 |
|
1486 |
#if EV_MULTIPLICITY |
1487 |
struct ev_loop * |
1488 |
ev_default_loop_init (unsigned int flags) |
1489 |
#else |
1490 |
int |
1491 |
ev_default_loop (unsigned int flags) |
1492 |
#endif |
1493 |
{ |
1494 |
if (!ev_default_loop_ptr) |
1495 |
{ |
1496 |
#if EV_MULTIPLICITY |
1497 |
struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct; |
1498 |
#else |
1499 |
ev_default_loop_ptr = 1; |
1500 |
#endif |
1501 |
|
1502 |
loop_init (EV_A_ flags); |
1503 |
|
1504 |
if (ev_backend (EV_A)) |
1505 |
{ |
1506 |
#ifndef _WIN32 |
1507 |
ev_signal_init (&childev, childcb, SIGCHLD); |
1508 |
ev_set_priority (&childev, EV_MAXPRI); |
1509 |
ev_signal_start (EV_A_ &childev); |
1510 |
ev_unref (EV_A); /* child watcher should not keep loop alive */ |
1511 |
#endif |
1512 |
} |
1513 |
else |
1514 |
ev_default_loop_ptr = 0; |
1515 |
} |
1516 |
|
1517 |
return ev_default_loop_ptr; |
1518 |
} |
1519 |
|
1520 |
void |
1521 |
ev_default_destroy (void) |
1522 |
{ |
1523 |
#if EV_MULTIPLICITY |
1524 |
struct ev_loop *loop = ev_default_loop_ptr; |
1525 |
#endif |
1526 |
|
1527 |
#ifndef _WIN32 |
1528 |
ev_ref (EV_A); /* child watcher */ |
1529 |
ev_signal_stop (EV_A_ &childev); |
1530 |
#endif |
1531 |
|
1532 |
loop_destroy (EV_A); |
1533 |
} |
1534 |
|
1535 |
void |
1536 |
ev_default_fork (void) |
1537 |
{ |
1538 |
#if EV_MULTIPLICITY |
1539 |
struct ev_loop *loop = ev_default_loop_ptr; |
1540 |
#endif |
1541 |
|
1542 |
if (backend) |
1543 |
postfork = 1; /* must be in line with ev_loop_fork */ |
1544 |
} |
1545 |
|
1546 |
/*****************************************************************************/ |
1547 |
|
1548 |
void |
1549 |
ev_invoke (EV_P_ void *w, int revents) |
1550 |
{ |
1551 |
EV_CB_INVOKE ((W)w, revents); |
1552 |
} |
1553 |
|
1554 |
void inline_speed |
1555 |
call_pending (EV_P) |
1556 |
{ |
1557 |
int pri; |
1558 |
|
1559 |
for (pri = NUMPRI; pri--; ) |
1560 |
while (pendingcnt [pri]) |
1561 |
{ |
1562 |
ANPENDING *p = pendings [pri] + --pendingcnt [pri]; |
1563 |
|
1564 |
if (expect_true (p->w)) |
1565 |
{ |
1566 |
/*assert (("non-pending watcher on pending list", p->w->pending));*/ |
1567 |
|
1568 |
p->w->pending = 0; |
1569 |
EV_CB_INVOKE (p->w, p->events); |
1570 |
} |
1571 |
} |
1572 |
} |
1573 |
|
1574 |
#if EV_IDLE_ENABLE |
1575 |
void inline_size |
1576 |
idle_reify (EV_P) |
1577 |
{ |
1578 |
if (expect_false (idleall)) |
1579 |
{ |
1580 |
int pri; |
1581 |
|
1582 |
for (pri = NUMPRI; pri--; ) |
1583 |
{ |
1584 |
if (pendingcnt [pri]) |
1585 |
break; |
1586 |
|
1587 |
if (idlecnt [pri]) |
1588 |
{ |
1589 |
queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE); |
1590 |
break; |
1591 |
} |
1592 |
} |
1593 |
} |
1594 |
} |
1595 |
#endif |
1596 |
|
1597 |
void inline_size |
1598 |
timers_reify (EV_P) |
1599 |
{ |
1600 |
while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now) |
1601 |
{ |
1602 |
ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]); |
1603 |
|
1604 |
/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/ |
1605 |
|
1606 |
/* first reschedule or stop timer */ |
1607 |
if (w->repeat) |
1608 |
{ |
1609 |
assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.)); |
1610 |
|
1611 |
ev_at (w) += w->repeat; |
1612 |
if (ev_at (w) < mn_now) |
1613 |
ev_at (w) = mn_now; |
1614 |
|
1615 |
ANHE_at_set (timers [HEAP0]); |
1616 |
downheap (timers, timercnt, HEAP0); |
1617 |
} |
1618 |
else |
1619 |
ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1620 |
|
1621 |
ev_feed_event (EV_A_ (W)w, EV_TIMEOUT); |
1622 |
} |
1623 |
} |
1624 |
|
1625 |
#if EV_PERIODIC_ENABLE |
1626 |
void inline_size |
1627 |
periodics_reify (EV_P) |
1628 |
{ |
1629 |
while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now) |
1630 |
{ |
1631 |
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]); |
1632 |
|
1633 |
/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/ |
1634 |
|
1635 |
/* first reschedule or stop timer */ |
1636 |
if (w->reschedule_cb) |
1637 |
{ |
1638 |
ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON); |
1639 |
assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now)); |
1640 |
ANHE_at_set (periodics [HEAP0]); |
1641 |
downheap (periodics, periodiccnt, HEAP0); |
1642 |
} |
1643 |
else if (w->interval) |
1644 |
{ |
1645 |
ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1646 |
if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval; |
1647 |
assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now)); |
1648 |
ANHE_at_set (periodics [HEAP0]); |
1649 |
downheap (periodics, periodiccnt, HEAP0); |
1650 |
} |
1651 |
else |
1652 |
ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */ |
1653 |
|
1654 |
ev_feed_event (EV_A_ (W)w, EV_PERIODIC); |
1655 |
} |
1656 |
} |
1657 |
|
1658 |
static void noinline |
1659 |
periodics_reschedule (EV_P) |
1660 |
{ |
1661 |
int i; |
1662 |
|
1663 |
/* adjust periodics after time jump */ |
1664 |
for (i = HEAP0; i < periodiccnt + HEAP0; ++i) |
1665 |
{ |
1666 |
ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]); |
1667 |
|
1668 |
if (w->reschedule_cb) |
1669 |
ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
1670 |
else if (w->interval) |
1671 |
ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
1672 |
|
1673 |
ANHE_at_set (periodics [i]); |
1674 |
} |
1675 |
|
1676 |
/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */ |
1677 |
for (i = periodiccnt >> 1; --i; ) |
1678 |
downheap (periodics, periodiccnt, i + HEAP0); |
1679 |
} |
1680 |
#endif |
1681 |
|
1682 |
void inline_speed |
1683 |
time_update (EV_P_ ev_tstamp max_block) |
1684 |
{ |
1685 |
int i; |
1686 |
|
1687 |
#if EV_USE_MONOTONIC |
1688 |
if (expect_true (have_monotonic)) |
1689 |
{ |
1690 |
ev_tstamp odiff = rtmn_diff; |
1691 |
|
1692 |
mn_now = get_clock (); |
1693 |
|
1694 |
/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */ |
1695 |
/* interpolate in the meantime */ |
1696 |
if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5)) |
1697 |
{ |
1698 |
ev_rt_now = rtmn_diff + mn_now; |
1699 |
return; |
1700 |
} |
1701 |
|
1702 |
now_floor = mn_now; |
1703 |
ev_rt_now = ev_time (); |
1704 |
|
1705 |
/* loop a few times, before making important decisions. |
1706 |
* on the choice of "4": one iteration isn't enough, |
1707 |
* in case we get preempted during the calls to |
1708 |
* ev_time and get_clock. a second call is almost guaranteed |
1709 |
* to succeed in that case, though. and looping a few more times |
1710 |
* doesn't hurt either as we only do this on time-jumps or |
1711 |
* in the unlikely event of having been preempted here. |
1712 |
*/ |
1713 |
for (i = 4; --i; ) |
1714 |
{ |
1715 |
rtmn_diff = ev_rt_now - mn_now; |
1716 |
|
1717 |
if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)) |
1718 |
return; /* all is well */ |
1719 |
|
1720 |
ev_rt_now = ev_time (); |
1721 |
mn_now = get_clock (); |
1722 |
now_floor = mn_now; |
1723 |
} |
1724 |
|
1725 |
# if EV_PERIODIC_ENABLE |
1726 |
periodics_reschedule (EV_A); |
1727 |
# endif |
1728 |
/* no timer adjustment, as the monotonic clock doesn't jump */ |
1729 |
/* timers_reschedule (EV_A_ rtmn_diff - odiff) */ |
1730 |
} |
1731 |
else |
1732 |
#endif |
1733 |
{ |
1734 |
ev_rt_now = ev_time (); |
1735 |
|
1736 |
if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP)) |
1737 |
{ |
1738 |
#if EV_PERIODIC_ENABLE |
1739 |
periodics_reschedule (EV_A); |
1740 |
#endif |
1741 |
/* adjust timers. this is easy, as the offset is the same for all of them */ |
1742 |
for (i = 0; i < timercnt; ++i) |
1743 |
{ |
1744 |
ANHE *he = timers + i + HEAP0; |
1745 |
ANHE_w (*he)->at += ev_rt_now - mn_now; |
1746 |
ANHE_at_set (*he); |
1747 |
} |
1748 |
} |
1749 |
|
1750 |
mn_now = ev_rt_now; |
1751 |
} |
1752 |
} |
1753 |
|
1754 |
void |
1755 |
ev_ref (EV_P) |
1756 |
{ |
1757 |
++activecnt; |
1758 |
} |
1759 |
|
1760 |
void |
1761 |
ev_unref (EV_P) |
1762 |
{ |
1763 |
--activecnt; |
1764 |
} |
1765 |
|
1766 |
static int loop_done; |
1767 |
|
1768 |
void |
1769 |
ev_loop (EV_P_ int flags) |
1770 |
{ |
1771 |
loop_done = EVUNLOOP_CANCEL; |
1772 |
|
1773 |
call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */ |
1774 |
|
1775 |
do |
1776 |
{ |
1777 |
#ifndef _WIN32 |
1778 |
if (expect_false (curpid)) /* penalise the forking check even more */ |
1779 |
if (expect_false (getpid () != curpid)) |
1780 |
{ |
1781 |
curpid = getpid (); |
1782 |
postfork = 1; |
1783 |
} |
1784 |
#endif |
1785 |
|
1786 |
#if EV_FORK_ENABLE |
1787 |
/* we might have forked, so queue fork handlers */ |
1788 |
if (expect_false (postfork)) |
1789 |
if (forkcnt) |
1790 |
{ |
1791 |
queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK); |
1792 |
call_pending (EV_A); |
1793 |
} |
1794 |
#endif |
1795 |
|
1796 |
/* queue prepare watchers (and execute them) */ |
1797 |
if (expect_false (preparecnt)) |
1798 |
{ |
1799 |
queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE); |
1800 |
call_pending (EV_A); |
1801 |
} |
1802 |
|
1803 |
if (expect_false (!activecnt)) |
1804 |
break; |
1805 |
|
1806 |
/* we might have forked, so reify kernel state if necessary */ |
1807 |
if (expect_false (postfork)) |
1808 |
loop_fork (EV_A); |
1809 |
|
1810 |
/* update fd-related kernel structures */ |
1811 |
fd_reify (EV_A); |
1812 |
|
1813 |
/* calculate blocking time */ |
1814 |
{ |
1815 |
ev_tstamp waittime = 0.; |
1816 |
ev_tstamp sleeptime = 0.; |
1817 |
|
1818 |
if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt))) |
1819 |
{ |
1820 |
/* update time to cancel out callback processing overhead */ |
1821 |
time_update (EV_A_ 1e100); |
1822 |
|
1823 |
waittime = MAX_BLOCKTIME; |
1824 |
|
1825 |
if (timercnt) |
1826 |
{ |
1827 |
ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge; |
1828 |
if (waittime > to) waittime = to; |
1829 |
} |
1830 |
|
1831 |
#if EV_PERIODIC_ENABLE |
1832 |
if (periodiccnt) |
1833 |
{ |
1834 |
ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge; |
1835 |
if (waittime > to) waittime = to; |
1836 |
} |
1837 |
#endif |
1838 |
|
1839 |
if (expect_false (waittime < timeout_blocktime)) |
1840 |
waittime = timeout_blocktime; |
1841 |
|
1842 |
sleeptime = waittime - backend_fudge; |
1843 |
|
1844 |
if (expect_true (sleeptime > io_blocktime)) |
1845 |
sleeptime = io_blocktime; |
1846 |
|
1847 |
if (sleeptime) |
1848 |
{ |
1849 |
ev_sleep (sleeptime); |
1850 |
waittime -= sleeptime; |
1851 |
} |
1852 |
} |
1853 |
|
1854 |
++loop_count; |
1855 |
backend_poll (EV_A_ waittime); |
1856 |
|
1857 |
/* update ev_rt_now, do magic */ |
1858 |
time_update (EV_A_ waittime + sleeptime); |
1859 |
} |
1860 |
|
1861 |
/* queue pending timers and reschedule them */ |
1862 |
timers_reify (EV_A); /* relative timers called last */ |
1863 |
#if EV_PERIODIC_ENABLE |
1864 |
periodics_reify (EV_A); /* absolute timers called first */ |
1865 |
#endif |
1866 |
|
1867 |
#if EV_IDLE_ENABLE |
1868 |
/* queue idle watchers unless other events are pending */ |
1869 |
idle_reify (EV_A); |
1870 |
#endif |
1871 |
|
1872 |
/* queue check watchers, to be executed first */ |
1873 |
if (expect_false (checkcnt)) |
1874 |
queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK); |
1875 |
|
1876 |
call_pending (EV_A); |
1877 |
} |
1878 |
while (expect_true ( |
1879 |
activecnt |
1880 |
&& !loop_done |
1881 |
&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)) |
1882 |
)); |
1883 |
|
1884 |
if (loop_done == EVUNLOOP_ONE) |
1885 |
loop_done = EVUNLOOP_CANCEL; |
1886 |
} |
1887 |
|
1888 |
void |
1889 |
ev_unloop (EV_P_ int how) |
1890 |
{ |
1891 |
loop_done = how; |
1892 |
} |
1893 |
|
1894 |
/*****************************************************************************/ |
1895 |
|
1896 |
void inline_size |
1897 |
wlist_add (WL *head, WL elem) |
1898 |
{ |
1899 |
elem->next = *head; |
1900 |
*head = elem; |
1901 |
} |
1902 |
|
1903 |
void inline_size |
1904 |
wlist_del (WL *head, WL elem) |
1905 |
{ |
1906 |
while (*head) |
1907 |
{ |
1908 |
if (*head == elem) |
1909 |
{ |
1910 |
*head = elem->next; |
1911 |
return; |
1912 |
} |
1913 |
|
1914 |
head = &(*head)->next; |
1915 |
} |
1916 |
} |
1917 |
|
1918 |
void inline_speed |
1919 |
clear_pending (EV_P_ W w) |
1920 |
{ |
1921 |
if (w->pending) |
1922 |
{ |
1923 |
pendings [ABSPRI (w)][w->pending - 1].w = 0; |
1924 |
w->pending = 0; |
1925 |
} |
1926 |
} |
1927 |
|
1928 |
int |
1929 |
ev_clear_pending (EV_P_ void *w) |
1930 |
{ |
1931 |
W w_ = (W)w; |
1932 |
int pending = w_->pending; |
1933 |
|
1934 |
if (expect_true (pending)) |
1935 |
{ |
1936 |
ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1; |
1937 |
w_->pending = 0; |
1938 |
p->w = 0; |
1939 |
return p->events; |
1940 |
} |
1941 |
else |
1942 |
return 0; |
1943 |
} |
1944 |
|
1945 |
void inline_size |
1946 |
pri_adjust (EV_P_ W w) |
1947 |
{ |
1948 |
int pri = w->priority; |
1949 |
pri = pri < EV_MINPRI ? EV_MINPRI : pri; |
1950 |
pri = pri > EV_MAXPRI ? EV_MAXPRI : pri; |
1951 |
w->priority = pri; |
1952 |
} |
1953 |
|
1954 |
void inline_speed |
1955 |
ev_start (EV_P_ W w, int active) |
1956 |
{ |
1957 |
pri_adjust (EV_A_ w); |
1958 |
w->active = active; |
1959 |
ev_ref (EV_A); |
1960 |
} |
1961 |
|
1962 |
void inline_size |
1963 |
ev_stop (EV_P_ W w) |
1964 |
{ |
1965 |
ev_unref (EV_A); |
1966 |
w->active = 0; |
1967 |
} |
1968 |
|
1969 |
/*****************************************************************************/ |
1970 |
|
1971 |
void noinline |
1972 |
ev_io_start (EV_P_ ev_io *w) |
1973 |
{ |
1974 |
int fd = w->fd; |
1975 |
|
1976 |
if (expect_false (ev_is_active (w))) |
1977 |
return; |
1978 |
|
1979 |
assert (("ev_io_start called with negative fd", fd >= 0)); |
1980 |
|
1981 |
ev_start (EV_A_ (W)w, 1); |
1982 |
array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init); |
1983 |
wlist_add (&anfds[fd].head, (WL)w); |
1984 |
|
1985 |
fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1); |
1986 |
w->events &= ~EV_IOFDSET; |
1987 |
} |
1988 |
|
1989 |
void noinline |
1990 |
ev_io_stop (EV_P_ ev_io *w) |
1991 |
{ |
1992 |
clear_pending (EV_A_ (W)w); |
1993 |
if (expect_false (!ev_is_active (w))) |
1994 |
return; |
1995 |
|
1996 |
assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax)); |
1997 |
|
1998 |
wlist_del (&anfds[w->fd].head, (WL)w); |
1999 |
ev_stop (EV_A_ (W)w); |
2000 |
|
2001 |
fd_change (EV_A_ w->fd, 1); |
2002 |
} |
2003 |
|
2004 |
void noinline |
2005 |
ev_timer_start (EV_P_ ev_timer *w) |
2006 |
{ |
2007 |
if (expect_false (ev_is_active (w))) |
2008 |
return; |
2009 |
|
2010 |
ev_at (w) += mn_now; |
2011 |
|
2012 |
assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.)); |
2013 |
|
2014 |
ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1); |
2015 |
array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2); |
2016 |
ANHE_w (timers [ev_active (w)]) = (WT)w; |
2017 |
ANHE_at_set (timers [ev_active (w)]); |
2018 |
upheap (timers, ev_active (w)); |
2019 |
|
2020 |
/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/ |
2021 |
} |
2022 |
|
2023 |
void noinline |
2024 |
ev_timer_stop (EV_P_ ev_timer *w) |
2025 |
{ |
2026 |
clear_pending (EV_A_ (W)w); |
2027 |
if (expect_false (!ev_is_active (w))) |
2028 |
return; |
2029 |
|
2030 |
{ |
2031 |
int active = ev_active (w); |
2032 |
|
2033 |
assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w)); |
2034 |
|
2035 |
if (expect_true (active < timercnt + HEAP0 - 1)) |
2036 |
{ |
2037 |
timers [active] = timers [timercnt + HEAP0 - 1]; |
2038 |
adjustheap (timers, timercnt, active); |
2039 |
} |
2040 |
|
2041 |
--timercnt; |
2042 |
} |
2043 |
|
2044 |
ev_at (w) -= mn_now; |
2045 |
|
2046 |
ev_stop (EV_A_ (W)w); |
2047 |
} |
2048 |
|
2049 |
void noinline |
2050 |
ev_timer_again (EV_P_ ev_timer *w) |
2051 |
{ |
2052 |
if (ev_is_active (w)) |
2053 |
{ |
2054 |
if (w->repeat) |
2055 |
{ |
2056 |
ev_at (w) = mn_now + w->repeat; |
2057 |
ANHE_at_set (timers [ev_active (w)]); |
2058 |
adjustheap (timers, timercnt, ev_active (w)); |
2059 |
} |
2060 |
else |
2061 |
ev_timer_stop (EV_A_ w); |
2062 |
} |
2063 |
else if (w->repeat) |
2064 |
{ |
2065 |
ev_at (w) = w->repeat; |
2066 |
ev_timer_start (EV_A_ w); |
2067 |
} |
2068 |
} |
2069 |
|
2070 |
#if EV_PERIODIC_ENABLE |
2071 |
void noinline |
2072 |
ev_periodic_start (EV_P_ ev_periodic *w) |
2073 |
{ |
2074 |
if (expect_false (ev_is_active (w))) |
2075 |
return; |
2076 |
|
2077 |
if (w->reschedule_cb) |
2078 |
ev_at (w) = w->reschedule_cb (w, ev_rt_now); |
2079 |
else if (w->interval) |
2080 |
{ |
2081 |
assert (("ev_periodic_start called with negative interval value", w->interval >= 0.)); |
2082 |
/* this formula differs from the one in periodic_reify because we do not always round up */ |
2083 |
ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval; |
2084 |
} |
2085 |
else |
2086 |
ev_at (w) = w->offset; |
2087 |
|
2088 |
ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1); |
2089 |
array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2); |
2090 |
ANHE_w (periodics [ev_active (w)]) = (WT)w; |
2091 |
upheap (periodics, ev_active (w)); |
2092 |
|
2093 |
/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/ |
2094 |
} |
2095 |
|
2096 |
void noinline |
2097 |
ev_periodic_stop (EV_P_ ev_periodic *w) |
2098 |
{ |
2099 |
clear_pending (EV_A_ (W)w); |
2100 |
if (expect_false (!ev_is_active (w))) |
2101 |
return; |
2102 |
|
2103 |
{ |
2104 |
int active = ev_active (w); |
2105 |
|
2106 |
assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w)); |
2107 |
|
2108 |
if (expect_true (active < periodiccnt + HEAP0 - 1)) |
2109 |
{ |
2110 |
periodics [active] = periodics [periodiccnt + HEAP0 - 1]; |
2111 |
adjustheap (periodics, periodiccnt, active); |
2112 |
} |
2113 |
|
2114 |
--periodiccnt; |
2115 |
} |
2116 |
|
2117 |
ev_stop (EV_A_ (W)w); |
2118 |
} |
2119 |
|
2120 |
void noinline |
2121 |
ev_periodic_again (EV_P_ ev_periodic *w) |
2122 |
{ |
2123 |
/* TODO: use adjustheap and recalculation */ |
2124 |
ev_periodic_stop (EV_A_ w); |
2125 |
ev_periodic_start (EV_A_ w); |
2126 |
} |
2127 |
#endif |
2128 |
|
2129 |
#ifndef SA_RESTART |
2130 |
# define SA_RESTART 0 |
2131 |
#endif |
2132 |
|
2133 |
void noinline |
2134 |
ev_signal_start (EV_P_ ev_signal *w) |
2135 |
{ |
2136 |
#if EV_MULTIPLICITY |
2137 |
assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2138 |
#endif |
2139 |
if (expect_false (ev_is_active (w))) |
2140 |
return; |
2141 |
|
2142 |
assert (("ev_signal_start called with illegal signal number", w->signum > 0)); |
2143 |
|
2144 |
evpipe_init (EV_A); |
2145 |
|
2146 |
{ |
2147 |
#ifndef _WIN32 |
2148 |
sigset_t full, prev; |
2149 |
sigfillset (&full); |
2150 |
sigprocmask (SIG_SETMASK, &full, &prev); |
2151 |
#endif |
2152 |
|
2153 |
array_needsize (ANSIG, signals, signalmax, w->signum, signals_init); |
2154 |
|
2155 |
#ifndef _WIN32 |
2156 |
sigprocmask (SIG_SETMASK, &prev, 0); |
2157 |
#endif |
2158 |
} |
2159 |
|
2160 |
ev_start (EV_A_ (W)w, 1); |
2161 |
wlist_add (&signals [w->signum - 1].head, (WL)w); |
2162 |
|
2163 |
if (!((WL)w)->next) |
2164 |
{ |
2165 |
#if _WIN32 |
2166 |
signal (w->signum, ev_sighandler); |
2167 |
#else |
2168 |
struct sigaction sa; |
2169 |
sa.sa_handler = ev_sighandler; |
2170 |
sigfillset (&sa.sa_mask); |
2171 |
sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */ |
2172 |
sigaction (w->signum, &sa, 0); |
2173 |
#endif |
2174 |
} |
2175 |
} |
2176 |
|
2177 |
void noinline |
2178 |
ev_signal_stop (EV_P_ ev_signal *w) |
2179 |
{ |
2180 |
clear_pending (EV_A_ (W)w); |
2181 |
if (expect_false (!ev_is_active (w))) |
2182 |
return; |
2183 |
|
2184 |
wlist_del (&signals [w->signum - 1].head, (WL)w); |
2185 |
ev_stop (EV_A_ (W)w); |
2186 |
|
2187 |
if (!signals [w->signum - 1].head) |
2188 |
signal (w->signum, SIG_DFL); |
2189 |
} |
2190 |
|
2191 |
void |
2192 |
ev_child_start (EV_P_ ev_child *w) |
2193 |
{ |
2194 |
#if EV_MULTIPLICITY |
2195 |
assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr)); |
2196 |
#endif |
2197 |
if (expect_false (ev_is_active (w))) |
2198 |
return; |
2199 |
|
2200 |
ev_start (EV_A_ (W)w, 1); |
2201 |
wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
2202 |
} |
2203 |
|
2204 |
void |
2205 |
ev_child_stop (EV_P_ ev_child *w) |
2206 |
{ |
2207 |
clear_pending (EV_A_ (W)w); |
2208 |
if (expect_false (!ev_is_active (w))) |
2209 |
return; |
2210 |
|
2211 |
wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w); |
2212 |
ev_stop (EV_A_ (W)w); |
2213 |
} |
2214 |
|
2215 |
#if EV_STAT_ENABLE |
2216 |
|
2217 |
# ifdef _WIN32 |
2218 |
# undef lstat |
2219 |
# define lstat(a,b) _stati64 (a,b) |
2220 |
# endif |
2221 |
|
2222 |
#define DEF_STAT_INTERVAL 5.0074891 |
2223 |
#define MIN_STAT_INTERVAL 0.1074891 |
2224 |
|
2225 |
static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents); |
2226 |
|
2227 |
#if EV_USE_INOTIFY |
2228 |
# define EV_INOTIFY_BUFSIZE 8192 |
2229 |
|
2230 |
static void noinline |
2231 |
infy_add (EV_P_ ev_stat *w) |
2232 |
{ |
2233 |
w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD); |
2234 |
|
2235 |
if (w->wd < 0) |
2236 |
{ |
2237 |
ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */ |
2238 |
|
2239 |
/* monitor some parent directory for speedup hints */ |
2240 |
/* note that exceeding the hardcoded limit is not a correctness issue, */ |
2241 |
/* but an efficiency issue only */ |
2242 |
if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096) |
2243 |
{ |
2244 |
char path [4096]; |
2245 |
strcpy (path, w->path); |
2246 |
|
2247 |
do |
2248 |
{ |
2249 |
int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF |
2250 |
| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO); |
2251 |
|
2252 |
char *pend = strrchr (path, '/'); |
2253 |
|
2254 |
if (!pend) |
2255 |
break; /* whoops, no '/', complain to your admin */ |
2256 |
|
2257 |
*pend = 0; |
2258 |
w->wd = inotify_add_watch (fs_fd, path, mask); |
2259 |
} |
2260 |
while (w->wd < 0 && (errno == ENOENT || errno == EACCES)); |
2261 |
} |
2262 |
} |
2263 |
else |
2264 |
ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */ |
2265 |
|
2266 |
if (w->wd >= 0) |
2267 |
wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w); |
2268 |
} |
2269 |
|
2270 |
static void noinline |
2271 |
infy_del (EV_P_ ev_stat *w) |
2272 |
{ |
2273 |
int slot; |
2274 |
int wd = w->wd; |
2275 |
|
2276 |
if (wd < 0) |
2277 |
return; |
2278 |
|
2279 |
w->wd = -2; |
2280 |
slot = wd & (EV_INOTIFY_HASHSIZE - 1); |
2281 |
wlist_del (&fs_hash [slot].head, (WL)w); |
2282 |
|
2283 |
/* remove this watcher, if others are watching it, they will rearm */ |
2284 |
inotify_rm_watch (fs_fd, wd); |
2285 |
} |
2286 |
|
2287 |
static void noinline |
2288 |
infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev) |
2289 |
{ |
2290 |
if (slot < 0) |
2291 |
/* overflow, need to check for all hahs slots */ |
2292 |
for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
2293 |
infy_wd (EV_A_ slot, wd, ev); |
2294 |
else |
2295 |
{ |
2296 |
WL w_; |
2297 |
|
2298 |
for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; ) |
2299 |
{ |
2300 |
ev_stat *w = (ev_stat *)w_; |
2301 |
w_ = w_->next; /* lets us remove this watcher and all before it */ |
2302 |
|
2303 |
if (w->wd == wd || wd == -1) |
2304 |
{ |
2305 |
if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF)) |
2306 |
{ |
2307 |
w->wd = -1; |
2308 |
infy_add (EV_A_ w); /* re-add, no matter what */ |
2309 |
} |
2310 |
|
2311 |
stat_timer_cb (EV_A_ &w->timer, 0); |
2312 |
} |
2313 |
} |
2314 |
} |
2315 |
} |
2316 |
|
2317 |
static void |
2318 |
infy_cb (EV_P_ ev_io *w, int revents) |
2319 |
{ |
2320 |
char buf [EV_INOTIFY_BUFSIZE]; |
2321 |
struct inotify_event *ev = (struct inotify_event *)buf; |
2322 |
int ofs; |
2323 |
int len = read (fs_fd, buf, sizeof (buf)); |
2324 |
|
2325 |
for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len) |
2326 |
infy_wd (EV_A_ ev->wd, ev->wd, ev); |
2327 |
} |
2328 |
|
2329 |
void inline_size |
2330 |
infy_init (EV_P) |
2331 |
{ |
2332 |
if (fs_fd != -2) |
2333 |
return; |
2334 |
|
2335 |
fs_fd = inotify_init (); |
2336 |
|
2337 |
if (fs_fd >= 0) |
2338 |
{ |
2339 |
ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ); |
2340 |
ev_set_priority (&fs_w, EV_MAXPRI); |
2341 |
ev_io_start (EV_A_ &fs_w); |
2342 |
} |
2343 |
} |
2344 |
|
2345 |
void inline_size |
2346 |
infy_fork (EV_P) |
2347 |
{ |
2348 |
int slot; |
2349 |
|
2350 |
if (fs_fd < 0) |
2351 |
return; |
2352 |
|
2353 |
close (fs_fd); |
2354 |
fs_fd = inotify_init (); |
2355 |
|
2356 |
for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot) |
2357 |
{ |
2358 |
WL w_ = fs_hash [slot].head; |
2359 |
fs_hash [slot].head = 0; |
2360 |
|
2361 |
while (w_) |
2362 |
{ |
2363 |
ev_stat *w = (ev_stat *)w_; |
2364 |
w_ = w_->next; /* lets us add this watcher */ |
2365 |
|
2366 |
w->wd = -1; |
2367 |
|
2368 |
if (fs_fd >= 0) |
2369 |
infy_add (EV_A_ w); /* re-add, no matter what */ |
2370 |
else |
2371 |
ev_timer_start (EV_A_ &w->timer); |
2372 |
} |
2373 |
|
2374 |
} |
2375 |
} |
2376 |
|
2377 |
#endif |
2378 |
|
2379 |
void |
2380 |
ev_stat_stat (EV_P_ ev_stat *w) |
2381 |
{ |
2382 |
if (lstat (w->path, &w->attr) < 0) |
2383 |
w->attr.st_nlink = 0; |
2384 |
else if (!w->attr.st_nlink) |
2385 |
w->attr.st_nlink = 1; |
2386 |
} |
2387 |
|
2388 |
static void noinline |
2389 |
stat_timer_cb (EV_P_ ev_timer *w_, int revents) |
2390 |
{ |
2391 |
ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer)); |
2392 |
|
2393 |
/* we copy this here each the time so that */ |
2394 |
/* prev has the old value when the callback gets invoked */ |
2395 |
w->prev = w->attr; |
2396 |
ev_stat_stat (EV_A_ w); |
2397 |
|
2398 |
/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */ |
2399 |
if ( |
2400 |
w->prev.st_dev != w->attr.st_dev |
2401 |
|| w->prev.st_ino != w->attr.st_ino |
2402 |
|| w->prev.st_mode != w->attr.st_mode |
2403 |
|| w->prev.st_nlink != w->attr.st_nlink |
2404 |
|| w->prev.st_uid != w->attr.st_uid |
2405 |
|| w->prev.st_gid != w->attr.st_gid |
2406 |
|| w->prev.st_rdev != w->attr.st_rdev |
2407 |
|| w->prev.st_size != w->attr.st_size |
2408 |
|| w->prev.st_atime != w->attr.st_atime |
2409 |
|| w->prev.st_mtime != w->attr.st_mtime |
2410 |
|| w->prev.st_ctime != w->attr.st_ctime |
2411 |
) { |
2412 |
#if EV_USE_INOTIFY |
2413 |
infy_del (EV_A_ w); |
2414 |
infy_add (EV_A_ w); |
2415 |
ev_stat_stat (EV_A_ w); /* avoid race... */ |
2416 |
#endif |
2417 |
|
2418 |
ev_feed_event (EV_A_ w, EV_STAT); |
2419 |
} |
2420 |
} |
2421 |
|
2422 |
void |
2423 |
ev_stat_start (EV_P_ ev_stat *w) |
2424 |
{ |
2425 |
if (expect_false (ev_is_active (w))) |
2426 |
return; |
2427 |
|
2428 |
/* since we use memcmp, we need to clear any padding data etc. */ |
2429 |
memset (&w->prev, 0, sizeof (ev_statdata)); |
2430 |
memset (&w->attr, 0, sizeof (ev_statdata)); |
2431 |
|
2432 |
ev_stat_stat (EV_A_ w); |
2433 |
|
2434 |
if (w->interval < MIN_STAT_INTERVAL) |
2435 |
w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL; |
2436 |
|
2437 |
ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval); |
2438 |
ev_set_priority (&w->timer, ev_priority (w)); |
2439 |
|
2440 |
#if EV_USE_INOTIFY |
2441 |
infy_init (EV_A); |
2442 |
|
2443 |
if (fs_fd >= 0) |
2444 |
infy_add (EV_A_ w); |
2445 |
else |
2446 |
#endif |
2447 |
ev_timer_start (EV_A_ &w->timer); |
2448 |
|
2449 |
ev_start (EV_A_ (W)w, 1); |
2450 |
} |
2451 |
|
2452 |
void |
2453 |
ev_stat_stop (EV_P_ ev_stat *w) |
2454 |
{ |
2455 |
clear_pending (EV_A_ (W)w); |
2456 |
if (expect_false (!ev_is_active (w))) |
2457 |
return; |
2458 |
|
2459 |
#if EV_USE_INOTIFY |
2460 |
infy_del (EV_A_ w); |
2461 |
#endif |
2462 |
ev_timer_stop (EV_A_ &w->timer); |
2463 |
|
2464 |
ev_stop (EV_A_ (W)w); |
2465 |
} |
2466 |
#endif |
2467 |
|
2468 |
#if EV_IDLE_ENABLE |
2469 |
void |
2470 |
ev_idle_start (EV_P_ ev_idle *w) |
2471 |
{ |
2472 |
if (expect_false (ev_is_active (w))) |
2473 |
return; |
2474 |
|
2475 |
pri_adjust (EV_A_ (W)w); |
2476 |
|
2477 |
{ |
2478 |
int active = ++idlecnt [ABSPRI (w)]; |
2479 |
|
2480 |
++idleall; |
2481 |
ev_start (EV_A_ (W)w, active); |
2482 |
|
2483 |
array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2); |
2484 |
idles [ABSPRI (w)][active - 1] = w; |
2485 |
} |
2486 |
} |
2487 |
|
2488 |
void |
2489 |
ev_idle_stop (EV_P_ ev_idle *w) |
2490 |
{ |
2491 |
clear_pending (EV_A_ (W)w); |
2492 |
if (expect_false (!ev_is_active (w))) |
2493 |
return; |
2494 |
|
2495 |
{ |
2496 |
int active = ev_active (w); |
2497 |
|
2498 |
idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]]; |
2499 |
ev_active (idles [ABSPRI (w)][active - 1]) = active; |
2500 |
|
2501 |
ev_stop (EV_A_ (W)w); |
2502 |
--idleall; |
2503 |
} |
2504 |
} |
2505 |
#endif |
2506 |
|
2507 |
void |
2508 |
ev_prepare_start (EV_P_ ev_prepare *w) |
2509 |
{ |
2510 |
if (expect_false (ev_is_active (w))) |
2511 |
return; |
2512 |
|
2513 |
ev_start (EV_A_ (W)w, ++preparecnt); |
2514 |
array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2); |
2515 |
prepares [preparecnt - 1] = w; |
2516 |
} |
2517 |
|
2518 |
void |
2519 |
ev_prepare_stop (EV_P_ ev_prepare *w) |
2520 |
{ |
2521 |
clear_pending (EV_A_ (W)w); |
2522 |
if (expect_false (!ev_is_active (w))) |
2523 |
return; |
2524 |
|
2525 |
{ |
2526 |
int active = ev_active (w); |
2527 |
|
2528 |
prepares [active - 1] = prepares [--preparecnt]; |
2529 |
ev_active (prepares [active - 1]) = active; |
2530 |
} |
2531 |
|
2532 |
ev_stop (EV_A_ (W)w); |
2533 |
} |
2534 |
|
2535 |
void |
2536 |
ev_check_start (EV_P_ ev_check *w) |
2537 |
{ |
2538 |
if (expect_false (ev_is_active (w))) |
2539 |
return; |
2540 |
|
2541 |
ev_start (EV_A_ (W)w, ++checkcnt); |
2542 |
array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2); |
2543 |
checks [checkcnt - 1] = w; |
2544 |
} |
2545 |
|
2546 |
void |
2547 |
ev_check_stop (EV_P_ ev_check *w) |
2548 |
{ |
2549 |
clear_pending (EV_A_ (W)w); |
2550 |
if (expect_false (!ev_is_active (w))) |
2551 |
return; |
2552 |
|
2553 |
{ |
2554 |
int active = ev_active (w); |
2555 |
|
2556 |
checks [active - 1] = checks [--checkcnt]; |
2557 |
ev_active (checks [active - 1]) = active; |
2558 |
} |
2559 |
|
2560 |
ev_stop (EV_A_ (W)w); |
2561 |
} |
2562 |
|
2563 |
#if EV_EMBED_ENABLE |
2564 |
void noinline |
2565 |
ev_embed_sweep (EV_P_ ev_embed *w) |
2566 |
{ |
2567 |
ev_loop (w->other, EVLOOP_NONBLOCK); |
2568 |
} |
2569 |
|
2570 |
static void |
2571 |
embed_io_cb (EV_P_ ev_io *io, int revents) |
2572 |
{ |
2573 |
ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io)); |
2574 |
|
2575 |
if (ev_cb (w)) |
2576 |
ev_feed_event (EV_A_ (W)w, EV_EMBED); |
2577 |
else |
2578 |
ev_loop (w->other, EVLOOP_NONBLOCK); |
2579 |
} |
2580 |
|
2581 |
static void |
2582 |
embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents) |
2583 |
{ |
2584 |
ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare)); |
2585 |
|
2586 |
{ |
2587 |
struct ev_loop *loop = w->other; |
2588 |
|
2589 |
while (fdchangecnt) |
2590 |
{ |
2591 |
fd_reify (EV_A); |
2592 |
ev_loop (EV_A_ EVLOOP_NONBLOCK); |
2593 |
} |
2594 |
} |
2595 |
} |
2596 |
|
2597 |
#if 0 |
2598 |
static void |
2599 |
embed_idle_cb (EV_P_ ev_idle *idle, int revents) |
2600 |
{ |
2601 |
ev_idle_stop (EV_A_ idle); |
2602 |
} |
2603 |
#endif |
2604 |
|
2605 |
void |
2606 |
ev_embed_start (EV_P_ ev_embed *w) |
2607 |
{ |
2608 |
if (expect_false (ev_is_active (w))) |
2609 |
return; |
2610 |
|
2611 |
{ |
2612 |
struct ev_loop *loop = w->other; |
2613 |
assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ())); |
2614 |
ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ); |
2615 |
} |
2616 |
|
2617 |
ev_set_priority (&w->io, ev_priority (w)); |
2618 |
ev_io_start (EV_A_ &w->io); |
2619 |
|
2620 |
ev_prepare_init (&w->prepare, embed_prepare_cb); |
2621 |
ev_set_priority (&w->prepare, EV_MINPRI); |
2622 |
ev_prepare_start (EV_A_ &w->prepare); |
2623 |
|
2624 |
/*ev_idle_init (&w->idle, e,bed_idle_cb);*/ |
2625 |
|
2626 |
ev_start (EV_A_ (W)w, 1); |
2627 |
} |
2628 |
|
2629 |
void |
2630 |
ev_embed_stop (EV_P_ ev_embed *w) |
2631 |
{ |
2632 |
clear_pending (EV_A_ (W)w); |
2633 |
if (expect_false (!ev_is_active (w))) |
2634 |
return; |
2635 |
|
2636 |
ev_io_stop (EV_A_ &w->io); |
2637 |
ev_prepare_stop (EV_A_ &w->prepare); |
2638 |
|
2639 |
ev_stop (EV_A_ (W)w); |
2640 |
} |
2641 |
#endif |
2642 |
|
2643 |
#if EV_FORK_ENABLE |
2644 |
void |
2645 |
ev_fork_start (EV_P_ ev_fork *w) |
2646 |
{ |
2647 |
if (expect_false (ev_is_active (w))) |
2648 |
return; |
2649 |
|
2650 |
ev_start (EV_A_ (W)w, ++forkcnt); |
2651 |
array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2); |
2652 |
forks [forkcnt - 1] = w; |
2653 |
} |
2654 |
|
2655 |
void |
2656 |
ev_fork_stop (EV_P_ ev_fork *w) |
2657 |
{ |
2658 |
clear_pending (EV_A_ (W)w); |
2659 |
if (expect_false (!ev_is_active (w))) |
2660 |
return; |
2661 |
|
2662 |
{ |
2663 |
int active = ev_active (w); |
2664 |
|
2665 |
forks [active - 1] = forks [--forkcnt]; |
2666 |
ev_active (forks [active - 1]) = active; |
2667 |
} |
2668 |
|
2669 |
ev_stop (EV_A_ (W)w); |
2670 |
} |
2671 |
#endif |
2672 |
|
2673 |
#if EV_ASYNC_ENABLE |
2674 |
void |
2675 |
ev_async_start (EV_P_ ev_async *w) |
2676 |
{ |
2677 |
if (expect_false (ev_is_active (w))) |
2678 |
return; |
2679 |
|
2680 |
evpipe_init (EV_A); |
2681 |
|
2682 |
ev_start (EV_A_ (W)w, ++asynccnt); |
2683 |
array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2); |
2684 |
asyncs [asynccnt - 1] = w; |
2685 |
} |
2686 |
|
2687 |
void |
2688 |
ev_async_stop (EV_P_ ev_async *w) |
2689 |
{ |
2690 |
clear_pending (EV_A_ (W)w); |
2691 |
if (expect_false (!ev_is_active (w))) |
2692 |
return; |
2693 |
|
2694 |
{ |
2695 |
int active = ev_active (w); |
2696 |
|
2697 |
asyncs [active - 1] = asyncs [--asynccnt]; |
2698 |
ev_active (asyncs [active - 1]) = active; |
2699 |
} |
2700 |
|
2701 |
ev_stop (EV_A_ (W)w); |
2702 |
} |
2703 |
|
2704 |
void |
2705 |
ev_async_send (EV_P_ ev_async *w) |
2706 |
{ |
2707 |
w->sent = 1; |
2708 |
evpipe_write (EV_A_ &gotasync); |
2709 |
} |
2710 |
#endif |
2711 |
|
2712 |
/*****************************************************************************/ |
2713 |
|
2714 |
struct ev_once |
2715 |
{ |
2716 |
ev_io io; |
2717 |
ev_timer to; |
2718 |
void (*cb)(int revents, void *arg); |
2719 |
void *arg; |
2720 |
}; |
2721 |
|
2722 |
static void |
2723 |
once_cb (EV_P_ struct ev_once *once, int revents) |
2724 |
{ |
2725 |
void (*cb)(int revents, void *arg) = once->cb; |
2726 |
void *arg = once->arg; |
2727 |
|
2728 |
ev_io_stop (EV_A_ &once->io); |
2729 |
ev_timer_stop (EV_A_ &once->to); |
2730 |
ev_free (once); |
2731 |
|
2732 |
cb (revents, arg); |
2733 |
} |
2734 |
|
2735 |
static void |
2736 |
once_cb_io (EV_P_ ev_io *w, int revents) |
2737 |
{ |
2738 |
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents); |
2739 |
} |
2740 |
|
2741 |
static void |
2742 |
once_cb_to (EV_P_ ev_timer *w, int revents) |
2743 |
{ |
2744 |
once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents); |
2745 |
} |
2746 |
|
2747 |
void |
2748 |
ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) |
2749 |
{ |
2750 |
struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once)); |
2751 |
|
2752 |
if (expect_false (!once)) |
2753 |
{ |
2754 |
cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg); |
2755 |
return; |
2756 |
} |
2757 |
|
2758 |
once->cb = cb; |
2759 |
once->arg = arg; |
2760 |
|
2761 |
ev_init (&once->io, once_cb_io); |
2762 |
if (fd >= 0) |
2763 |
{ |
2764 |
ev_io_set (&once->io, fd, events); |
2765 |
ev_io_start (EV_A_ &once->io); |
2766 |
} |
2767 |
|
2768 |
ev_init (&once->to, once_cb_to); |
2769 |
if (timeout >= 0.) |
2770 |
{ |
2771 |
ev_timer_set (&once->to, timeout, 0.); |
2772 |
ev_timer_start (EV_A_ &once->to); |
2773 |
} |
2774 |
} |
2775 |
|
2776 |
#if EV_MULTIPLICITY |
2777 |
#include "ev_wrap.h" |
2778 |
#endif |
2779 |
|
2780 |
#ifdef __cplusplus |
2781 |
} |
2782 |
#endif |
2783 |
|