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Comparing libev/ev.c (file contents):
Revision 1.166 by root, Sat Dec 8 03:53:36 2007 UTC vs.
Revision 1.233 by root, Tue May 6 23:34:16 2008 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* 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.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
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	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
…		…
51	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	61	# define EV_USE_MONOTONIC 0
53	# endif	62	# endif
54	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	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
56	# endif	73	# endif
57	# endif	74	# endif
58		75
59	# ifndef EV_USE_SELECT	76	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	119	# else
103	# define EV_USE_INOTIFY 0	120	# define EV_USE_INOTIFY 0
104	# endif	121	# endif
105	# endif	122	# endif
106		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
107	#endif	132	#endif
108		133
109	#include <math.h>	134	#include <math.h>
110	#include <stdlib.h>	135	#include <stdlib.h>
111	#include <fcntl.h>	136	#include <fcntl.h>
…		…
136	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	163	# endif
139	#endif	164	#endif
140		165
141	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		167
143	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
144	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
145	#endif	170	#endif
146		171
147	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
149	#endif	178	#endif
150		179
151	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
153	#endif	182	#endif
…		…
159	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
160	# endif	189	# endif
161	#endif	190	#endif
162		191
163	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
164	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
165	#endif	198	#endif
166		199
167	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
169	#endif	202	#endif
…		…
171	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
173	#endif	206	#endif
174		207
175	#ifndef EV_USE_INOTIFY	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
176	# define EV_USE_INOTIFY 0	212	# define EV_USE_INOTIFY 0
		213	# endif
177	#endif	214	#endif
178		215
179	#ifndef EV_PID_HASHSIZE	216	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	217	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	218	# define EV_PID_HASHSIZE 1
…		…
190	# else	227	# else
191	# define EV_INOTIFY_HASHSIZE 16	228	# define EV_INOTIFY_HASHSIZE 16
192	# endif	229	# endif
193	#endif	230	#endif
194		231
195	/**/	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 */
196		241
197	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
200	#endif	245	#endif
…		…
202	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
205	#endif	250	#endif
206		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
207	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	268	# include <winsock.h>
209	#endif	269	#endif
210		270
211	#if !EV_STAT_ENABLE	271	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	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" {
213	#endif	276	# endif
214		277	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	278	# ifdef __cplusplus
216	# include <sys/inotify.h>	279	}
		280	# endif
217	#endif	281	#endif
218		282
219	/**/	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 */
220		294
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224		298
225	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	301	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	302	#else
236	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	304	# define noinline
		305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		306	# define inline
		307	# endif
240	#endif	308	#endif
241		309
242	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	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
244		319
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		322
248	#define EMPTY /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
…		…
250		325
251	typedef ev_watcher *W;	326	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
254		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 */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		337	#endif
256		338
257	#ifdef _WIN32	339	#ifdef _WIN32
258	# include "ev_win32.c"	340	# include "ev_win32.c"
259	#endif	341	#endif
260		342
…		…
281	perror (msg);	363	perror (msg);
282	abort ();	364	abort ();
283	}	365	}
284	}	366	}
285		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
286	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287		384
288	void	385	void
289	ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
290	{	387	{
291	alloc = cb;	388	alloc = cb;
292	}	389	}
293		390
294	inline_speed void *	391	inline_speed void *
295	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
296	{	393	{
297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
298		395
299	if (!ptr && size)	396	if (!ptr && size)
300	{	397	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	399	abort ();
…		…
396	{	493	{
397	return ev_rt_now;	494	return ev_rt_now;
398	}	495	}
399	#endif	496	#endif
400		497
		498	void
		499	ev_sleep (ev_tstamp delay)
		500	{
		501	if (delay > 0.)
		502	{
		503	#if EV_USE_NANOSLEEP
		504	struct timespec ts;
		505
		506	ts.tv_sec = (time_t)delay;
		507	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		508
		509	nanosleep (&ts, 0);
		510	#elif defined(_WIN32)
		511	Sleep ((unsigned long)(delay * 1e3));
		512	#else
		513	struct timeval tv;
		514
		515	tv.tv_sec = (time_t)delay;
		516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		517
		518	select (0, 0, 0, 0, &tv);
		519	#endif
		520	}
		521	}
		522
		523	/*****************************************************************************/
		524
		525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		526
401	int inline_size	527	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	528	array_nextsize (int elem, int cur, int cnt)
403	{	529	{
404	int ncur = cur + 1;	530	int ncur = cur + 1;
405		531
406	do	532	do
407	ncur <<= 1;	533	ncur <<= 1;
408	while (cnt > ncur);	534	while (cnt > ncur);
409		535
410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	536	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411	if (elem * ncur > 4096)	537	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412	{	538	{
413	ncur *= elem;	539	ncur *= elem;
414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	540	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415	ncur = ncur - sizeof (void *) * 4;	541	ncur = ncur - sizeof (void *) * 4;
416	ncur /= elem;	542	ncur /= elem;
417	}	543	}
418		544
419	return ncur;	545	return ncur;
420	}	546	}
421		547
422	inline_speed void *	548	static noinline void *
423	array_realloc (int elem, void *base, int *cur, int cnt)	549	array_realloc (int elem, void *base, int *cur, int cnt)
424	{	550	{
425	*cur = array_nextsize (elem, *cur, cnt);	551	*cur = array_nextsize (elem, *cur, cnt);
426	return ev_realloc (base, elem * *cur);	552	return ev_realloc (base, elem * *cur);
427	}	553	}
…		…
452		578
453	void noinline	579	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	580	ev_feed_event (EV_P_ void *w, int revents)
455	{	581	{
456	W w_ = (W)w;	582	W w_ = (W)w;
		583	int pri = ABSPRI (w_);
457		584
458	if (expect_false (w_->pending))	585	if (expect_false (w_->pending))
		586	pendings [pri][w_->pending - 1].events |= revents;
		587	else
459	{	588	{
		589	w_->pending = ++pendingcnt [pri];
		590	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		591	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	592	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	593	}
463
464	w_->pending = ++pendingcnt [ABSPRI (w_)];
465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468	}	594	}
469		595
470	void inline_size	596	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	597	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	598	{
473	int i;	599	int i;
474		600
475	for (i = 0; i < eventcnt; ++i)	601	for (i = 0; i < eventcnt; ++i)
…		…
507	}	633	}
508		634
509	void	635	void
510	ev_feed_fd_event (EV_P_ int fd, int revents)	636	ev_feed_fd_event (EV_P_ int fd, int revents)
511	{	637	{
		638	if (fd >= 0 && fd < anfdmax)
512	fd_event (EV_A_ fd, revents);	639	fd_event (EV_A_ fd, revents);
513	}	640	}
514		641
515	void inline_size	642	void inline_size
516	fd_reify (EV_P)	643	fd_reify (EV_P)
517	{	644	{
…		…
521	{	648	{
522	int fd = fdchanges [i];	649	int fd = fdchanges [i];
523	ANFD *anfd = anfds + fd;	650	ANFD *anfd = anfds + fd;
524	ev_io *w;	651	ev_io *w;
525		652
526	int events = 0;	653	unsigned char events = 0;
527		654
528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	655	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
529	events |= w->events;	656	events |= (unsigned char)w->events;
530		657
531	#if EV_SELECT_IS_WINSOCKET	658	#if EV_SELECT_IS_WINSOCKET
532	if (events)	659	if (events)
533	{	660	{
534	unsigned long argp;	661	unsigned long argp;
		662	#ifdef EV_FD_TO_WIN32_HANDLE
		663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		664	#else
535	anfd->handle = _get_osfhandle (fd);	665	anfd->handle = _get_osfhandle (fd);
		666	#endif
536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537	}	668	}
538	#endif	669	#endif
539		670
		671	{
		672	unsigned char o_events = anfd->events;
		673	unsigned char o_reify = anfd->reify;
		674
540	anfd->reify = 0;	675	anfd->reify = 0;
541
542	backend_modify (EV_A_ fd, anfd->events, events);
543	anfd->events = events;	676	anfd->events = events;
		677
		678	if (o_events != events || o_reify & EV_IOFDSET)
		679	backend_modify (EV_A_ fd, o_events, events);
		680	}
544	}	681	}
545		682
546	fdchangecnt = 0;	683	fdchangecnt = 0;
547	}	684	}
548		685
549	void inline_size	686	void inline_size
550	fd_change (EV_P_ int fd)	687	fd_change (EV_P_ int fd, int flags)
551	{	688	{
552	if (expect_false (anfds [fd].reify))	689	unsigned char reify = anfds [fd].reify;
553	return;
554
555	anfds [fd].reify = 1;	690	anfds [fd].reify |= flags;
556		691
		692	if (expect_true (!reify))
		693	{
557	++fdchangecnt;	694	++fdchangecnt;
558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559	fdchanges [fdchangecnt - 1] = fd;	696	fdchanges [fdchangecnt - 1] = fd;
		697	}
560	}	698	}
561		699
562	void inline_speed	700	void inline_speed
563	fd_kill (EV_P_ int fd)	701	fd_kill (EV_P_ int fd)
564	{	702	{
…		…
615		753
616	for (fd = 0; fd < anfdmax; ++fd)	754	for (fd = 0; fd < anfdmax; ++fd)
617	if (anfds [fd].events)	755	if (anfds [fd].events)
618	{	756	{
619	anfds [fd].events = 0;	757	anfds [fd].events = 0;
620	fd_change (EV_A_ fd);	758	fd_change (EV_A_ fd, EV_IOFDSET | 1);
621	}	759	}
622	}	760	}
623		761
624	/*****************************************************************************/	762	/*****************************************************************************/
625		763
		764	/* towards the root */
626	void inline_speed	765	void inline_speed
627	upheap (WT *heap, int k)	766	upheap (WT *heap, int k)
628	{	767	{
629	WT w = heap [k];	768	WT w = heap [k];
630		769
631	while (k && heap [k >> 1]->at > w->at)	770	for (;;)
632	{	771	{
		772	int p = k >> 1;
		773
		774	/* maybe we could use a dummy element at heap [0]? */
		775	if (!p || heap [p]->at <= w->at)
		776	break;
		777
633	heap [k] = heap [k >> 1];	778	heap [k] = heap [p];
634	((W)heap [k])->active = k + 1;	779	ev_active (heap [k]) = k;
635	k >>= 1;	780	k = p;
636	}	781	}
637		782
638	heap [k] = w;	783	heap [k] = w;
639	((W)heap [k])->active = k + 1;	784	ev_active (heap [k]) = k;
640
641	}	785	}
642		786
		787	/* away from the root */
643	void inline_speed	788	void inline_speed
644	downheap (WT *heap, int N, int k)	789	downheap (WT *heap, int N, int k)
645	{	790	{
646	WT w = heap [k];	791	WT w = heap [k];
647		792
648	while (k < (N >> 1))	793	for (;;)
649	{	794	{
650	int j = k << 1;	795	int c = k << 1;
651		796
652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	797	if (c > N)
653	++j;
654
655	if (w->at <= heap [j]->at)
656	break;	798	break;
657		799
		800	c += c < N && heap [c]->at > heap [c + 1]->at
		801	? 1 : 0;
		802
		803	if (w->at <= heap [c]->at)
		804	break;
		805
658	heap [k] = heap [j];	806	heap [k] = heap [c];
659	((W)heap [k])->active = k + 1;	807	ev_active (heap [k]) = k;
		808
660	k = j;	809	k = c;
661	}	810	}
662		811
663	heap [k] = w;	812	heap [k] = w;
664	((W)heap [k])->active = k + 1;	813	ev_active (heap [k]) = k;
665	}	814	}
666		815
667	void inline_size	816	void inline_size
668	adjustheap (WT *heap, int N, int k)	817	adjustheap (WT *heap, int N, int k)
669	{	818	{
…		…
674	/*****************************************************************************/	823	/*****************************************************************************/
675		824
676	typedef struct	825	typedef struct
677	{	826	{
678	WL head;	827	WL head;
679	sig_atomic_t volatile gotsig;	828	EV_ATOMIC_T gotsig;
680	} ANSIG;	829	} ANSIG;
681		830
682	static ANSIG *signals;	831	static ANSIG *signals;
683	static int signalmax;	832	static int signalmax;
684		833
685	static int sigpipe [2];	834	static EV_ATOMIC_T gotsig;
686	static sig_atomic_t volatile gotsig;
687	static ev_io sigev;
688		835
689	void inline_size	836	void inline_size
690	signals_init (ANSIG *base, int count)	837	signals_init (ANSIG *base, int count)
691	{	838	{
692	while (count--)	839	while (count--)
…		…
696		843
697	++base;	844	++base;
698	}	845	}
699	}	846	}
700		847
701	static void	848	/*****************************************************************************/
702	sighandler (int signum)
703	{
704	#if _WIN32
705	signal (signum, sighandler);
706	#endif
707		849
708	signals [signum - 1].gotsig = 1;
709
710	if (!gotsig)
711	{
712	int old_errno = errno;
713	gotsig = 1;
714	write (sigpipe [1], &signum, 1);
715	errno = old_errno;
716	}
717	}
718
719	void noinline
720	ev_feed_signal_event (EV_P_ int signum)
721	{
722	WL w;
723
724	#if EV_MULTIPLICITY
725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726	#endif
727
728	--signum;
729
730	if (signum < 0 || signum >= signalmax)
731	return;
732
733	signals [signum].gotsig = 0;
734
735	for (w = signals [signum].head; w; w = w->next)
736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737	}
738
739	static void
740	sigcb (EV_P_ ev_io *iow, int revents)
741	{
742	int signum;
743
744	read (sigpipe [0], &revents, 1);
745	gotsig = 0;
746
747	for (signum = signalmax; signum--; )
748	if (signals [signum].gotsig)
749	ev_feed_signal_event (EV_A_ signum + 1);
750	}
751
752	void inline_size	850	void inline_speed
753	fd_intern (int fd)	851	fd_intern (int fd)
754	{	852	{
755	#ifdef _WIN32	853	#ifdef _WIN32
756	int arg = 1;	854	int arg = 1;
757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	855	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
760	fcntl (fd, F_SETFL, O_NONBLOCK);	858	fcntl (fd, F_SETFL, O_NONBLOCK);
761	#endif	859	#endif
762	}	860	}
763		861
764	static void noinline	862	static void noinline
765	siginit (EV_P)	863	evpipe_init (EV_P)
766	{	864	{
		865	if (!ev_is_active (&pipeev))
		866	{
		867	#if EV_USE_EVENTFD
		868	if ((evfd = eventfd (0, 0)) >= 0)
		869	{
		870	evpipe [0] = -1;
		871	fd_intern (evfd);
		872	ev_io_set (&pipeev, evfd, EV_READ);
		873	}
		874	else
		875	#endif
		876	{
		877	while (pipe (evpipe))
		878	syserr ("(libev) error creating signal/async pipe");
		879
767	fd_intern (sigpipe [0]);	880	fd_intern (evpipe [0]);
768	fd_intern (sigpipe [1]);	881	fd_intern (evpipe [1]);
		882	ev_io_set (&pipeev, evpipe [0], EV_READ);
		883	}
769		884
770	ev_io_set (&sigev, sigpipe [0], EV_READ);
771	ev_io_start (EV_A_ &sigev);	885	ev_io_start (EV_A_ &pipeev);
772	ev_unref (EV_A); /* child watcher should not keep loop alive */	886	ev_unref (EV_A); /* watcher should not keep loop alive */
		887	}
		888	}
		889
		890	void inline_size
		891	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		892	{
		893	if (!*flag)
		894	{
		895	int old_errno = errno; /* save errno because write might clobber it */
		896
		897	*flag = 1;
		898
		899	#if EV_USE_EVENTFD
		900	if (evfd >= 0)
		901	{
		902	uint64_t counter = 1;
		903	write (evfd, &counter, sizeof (uint64_t));
		904	}
		905	else
		906	#endif
		907	write (evpipe [1], &old_errno, 1);
		908
		909	errno = old_errno;
		910	}
		911	}
		912
		913	static void
		914	pipecb (EV_P_ ev_io *iow, int revents)
		915	{
		916	#if EV_USE_EVENTFD
		917	if (evfd >= 0)
		918	{
		919	uint64_t counter;
		920	read (evfd, &counter, sizeof (uint64_t));
		921	}
		922	else
		923	#endif
		924	{
		925	char dummy;
		926	read (evpipe [0], &dummy, 1);
		927	}
		928
		929	if (gotsig && ev_is_default_loop (EV_A))
		930	{
		931	int signum;
		932	gotsig = 0;
		933
		934	for (signum = signalmax; signum--; )
		935	if (signals [signum].gotsig)
		936	ev_feed_signal_event (EV_A_ signum + 1);
		937	}
		938
		939	#if EV_ASYNC_ENABLE
		940	if (gotasync)
		941	{
		942	int i;
		943	gotasync = 0;
		944
		945	for (i = asynccnt; i--; )
		946	if (asyncs [i]->sent)
		947	{
		948	asyncs [i]->sent = 0;
		949	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		950	}
		951	}
		952	#endif
773	}	953	}
774		954
775	/*****************************************************************************/	955	/*****************************************************************************/
776		956
		957	static void
		958	ev_sighandler (int signum)
		959	{
		960	#if EV_MULTIPLICITY
		961	struct ev_loop *loop = &default_loop_struct;
		962	#endif
		963
		964	#if _WIN32
		965	signal (signum, ev_sighandler);
		966	#endif
		967
		968	signals [signum - 1].gotsig = 1;
		969	evpipe_write (EV_A_ &gotsig);
		970	}
		971
		972	void noinline
		973	ev_feed_signal_event (EV_P_ int signum)
		974	{
		975	WL w;
		976
		977	#if EV_MULTIPLICITY
		978	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		979	#endif
		980
		981	--signum;
		982
		983	if (signum < 0 || signum >= signalmax)
		984	return;
		985
		986	signals [signum].gotsig = 0;
		987
		988	for (w = signals [signum].head; w; w = w->next)
		989	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		990	}
		991
		992	/*****************************************************************************/
		993
777	static ev_child *childs [EV_PID_HASHSIZE];	994	static WL childs [EV_PID_HASHSIZE];
778		995
779	#ifndef _WIN32	996	#ifndef _WIN32
780		997
781	static ev_signal childev;	998	static ev_signal childev;
782		999
		1000	#ifndef WIFCONTINUED
		1001	# define WIFCONTINUED(status) 0
		1002	#endif
		1003
783	void inline_speed	1004	void inline_speed
784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1005	child_reap (EV_P_ int chain, int pid, int status)
785	{	1006	{
786	ev_child *w;	1007	ev_child *w;
		1008	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
787		1009
788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1010	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1011	{
789	if (w->pid == pid || !w->pid)	1012	if ((w->pid == pid || !w->pid)
		1013	&& (!traced || (w->flags & 1)))
790	{	1014	{
791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1015	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
792	w->rpid = pid;	1016	w->rpid = pid;
793	w->rstatus = status;	1017	w->rstatus = status;
794	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1018	ev_feed_event (EV_A_ (W)w, EV_CHILD);
795	}	1019	}
		1020	}
796	}	1021	}
797		1022
798	#ifndef WCONTINUED	1023	#ifndef WCONTINUED
799	# define WCONTINUED 0	1024	# define WCONTINUED 0
800	#endif	1025	#endif
…		…
809	if (!WCONTINUED	1034	if (!WCONTINUED
810	|| errno != EINVAL	1035	|| errno != EINVAL
811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1036	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812	return;	1037	return;
813		1038
814	/* make sure we are called again until all childs have been reaped */	1039	/* make sure we are called again until all children have been reaped */
815	/* we need to do it this way so that the callback gets called before we continue */	1040	/* we need to do it this way so that the callback gets called before we continue */
816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1041	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817		1042
818	child_reap (EV_A_ sw, pid, pid, status);	1043	child_reap (EV_A_ pid, pid, status);
819	if (EV_PID_HASHSIZE > 1)	1044	if (EV_PID_HASHSIZE > 1)
820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1045	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
821	}	1046	}
822		1047
823	#endif	1048	#endif
824		1049
825	/*****************************************************************************/	1050	/*****************************************************************************/
…		…
897	}	1122	}
898		1123
899	unsigned int	1124	unsigned int
900	ev_embeddable_backends (void)	1125	ev_embeddable_backends (void)
901	{	1126	{
902	return EVBACKEND_EPOLL	1127	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
903	| EVBACKEND_KQUEUE	1128
904	| EVBACKEND_PORT;	1129	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1130	/* please fix it and tell me how to detect the fix */
		1131	flags &= ~EVBACKEND_EPOLL;
		1132
		1133	return flags;
905	}	1134	}
906		1135
907	unsigned int	1136	unsigned int
908	ev_backend (EV_P)	1137	ev_backend (EV_P)
909	{	1138	{
…		…
912		1141
913	unsigned int	1142	unsigned int
914	ev_loop_count (EV_P)	1143	ev_loop_count (EV_P)
915	{	1144	{
916	return loop_count;	1145	return loop_count;
		1146	}
		1147
		1148	void
		1149	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1150	{
		1151	io_blocktime = interval;
		1152	}
		1153
		1154	void
		1155	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1156	{
		1157	timeout_blocktime = interval;
917	}	1158	}
918		1159
919	static void noinline	1160	static void noinline
920	loop_init (EV_P_ unsigned int flags)	1161	loop_init (EV_P_ unsigned int flags)
921	{	1162	{
…		…
927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1168	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928	have_monotonic = 1;	1169	have_monotonic = 1;
929	}	1170	}
930	#endif	1171	#endif
931		1172
932	ev_rt_now = ev_time ();	1173	ev_rt_now = ev_time ();
933	mn_now = get_clock ();	1174	mn_now = get_clock ();
934	now_floor = mn_now;	1175	now_floor = mn_now;
935	rtmn_diff = ev_rt_now - mn_now;	1176	rtmn_diff = ev_rt_now - mn_now;
		1177
		1178	io_blocktime = 0.;
		1179	timeout_blocktime = 0.;
		1180	backend = 0;
		1181	backend_fd = -1;
		1182	gotasync = 0;
		1183	#if EV_USE_INOTIFY
		1184	fs_fd = -2;
		1185	#endif
936		1186
937	/* pid check not overridable via env */	1187	/* pid check not overridable via env */
938	#ifndef _WIN32	1188	#ifndef _WIN32
939	if (flags & EVFLAG_FORKCHECK)	1189	if (flags & EVFLAG_FORKCHECK)
940	curpid = getpid ();	1190	curpid = getpid ();
…		…
943	if (!(flags & EVFLAG_NOENV)	1193	if (!(flags & EVFLAG_NOENV)
944	&& !enable_secure ()	1194	&& !enable_secure ()
945	&& getenv ("LIBEV_FLAGS"))	1195	&& getenv ("LIBEV_FLAGS"))
946	flags = atoi (getenv ("LIBEV_FLAGS"));	1196	flags = atoi (getenv ("LIBEV_FLAGS"));
947		1197
948	if (!(flags & 0x0000ffffUL))	1198	if (!(flags & 0x0000ffffU))
949	flags |= ev_recommended_backends ();	1199	flags |= ev_recommended_backends ();
950
951	backend = 0;
952	backend_fd = -1;
953	#if EV_USE_INOTIFY
954	fs_fd = -2;
955	#endif
956		1200
957	#if EV_USE_PORT	1201	#if EV_USE_PORT
958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1202	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959	#endif	1203	#endif
960	#if EV_USE_KQUEUE	1204	#if EV_USE_KQUEUE
…		…
968	#endif	1212	#endif
969	#if EV_USE_SELECT	1213	#if EV_USE_SELECT
970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1214	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971	#endif	1215	#endif
972		1216
973	ev_init (&sigev, sigcb);	1217	ev_init (&pipeev, pipecb);
974	ev_set_priority (&sigev, EV_MAXPRI);	1218	ev_set_priority (&pipeev, EV_MAXPRI);
975	}	1219	}
976	}	1220	}
977		1221
978	static void noinline	1222	static void noinline
979	loop_destroy (EV_P)	1223	loop_destroy (EV_P)
980	{	1224	{
981	int i;	1225	int i;
		1226
		1227	if (ev_is_active (&pipeev))
		1228	{
		1229	ev_ref (EV_A); /* signal watcher */
		1230	ev_io_stop (EV_A_ &pipeev);
		1231
		1232	#if EV_USE_EVENTFD
		1233	if (evfd >= 0)
		1234	close (evfd);
		1235	#endif
		1236
		1237	if (evpipe [0] >= 0)
		1238	{
		1239	close (evpipe [0]);
		1240	close (evpipe [1]);
		1241	}
		1242	}
982		1243
983	#if EV_USE_INOTIFY	1244	#if EV_USE_INOTIFY
984	if (fs_fd >= 0)	1245	if (fs_fd >= 0)
985	close (fs_fd);	1246	close (fs_fd);
986	#endif	1247	#endif
…		…
1009	array_free (pending, [i]);	1270	array_free (pending, [i]);
1010	#if EV_IDLE_ENABLE	1271	#if EV_IDLE_ENABLE
1011	array_free (idle, [i]);	1272	array_free (idle, [i]);
1012	#endif	1273	#endif
1013	}	1274	}
		1275
		1276	ev_free (anfds); anfdmax = 0;
1014		1277
1015	/* have to use the microsoft-never-gets-it-right macro */	1278	/* have to use the microsoft-never-gets-it-right macro */
1016	array_free (fdchange, EMPTY);	1279	array_free (fdchange, EMPTY);
1017	array_free (timer, EMPTY);	1280	array_free (timer, EMPTY);
1018	#if EV_PERIODIC_ENABLE	1281	#if EV_PERIODIC_ENABLE
1019	array_free (periodic, EMPTY);	1282	array_free (periodic, EMPTY);
1020	#endif	1283	#endif
		1284	#if EV_FORK_ENABLE
		1285	array_free (fork, EMPTY);
		1286	#endif
1021	array_free (prepare, EMPTY);	1287	array_free (prepare, EMPTY);
1022	array_free (check, EMPTY);	1288	array_free (check, EMPTY);
		1289	#if EV_ASYNC_ENABLE
		1290	array_free (async, EMPTY);
		1291	#endif
1023		1292
1024	backend = 0;	1293	backend = 0;
1025	}	1294	}
1026		1295
		1296	#if EV_USE_INOTIFY
1027	void inline_size infy_fork (EV_P);	1297	void inline_size infy_fork (EV_P);
		1298	#endif
1028		1299
1029	void inline_size	1300	void inline_size
1030	loop_fork (EV_P)	1301	loop_fork (EV_P)
1031	{	1302	{
1032	#if EV_USE_PORT	1303	#if EV_USE_PORT
…		…
1040	#endif	1311	#endif
1041	#if EV_USE_INOTIFY	1312	#if EV_USE_INOTIFY
1042	infy_fork (EV_A);	1313	infy_fork (EV_A);
1043	#endif	1314	#endif
1044		1315
1045	if (ev_is_active (&sigev))	1316	if (ev_is_active (&pipeev))
1046	{	1317	{
1047	/* default loop */	1318	/* this "locks" the handlers against writing to the pipe */
		1319	/* while we modify the fd vars */
		1320	gotsig = 1;
		1321	#if EV_ASYNC_ENABLE
		1322	gotasync = 1;
		1323	#endif
1048		1324
1049	ev_ref (EV_A);	1325	ev_ref (EV_A);
1050	ev_io_stop (EV_A_ &sigev);	1326	ev_io_stop (EV_A_ &pipeev);
		1327
		1328	#if EV_USE_EVENTFD
		1329	if (evfd >= 0)
		1330	close (evfd);
		1331	#endif
		1332
		1333	if (evpipe [0] >= 0)
		1334	{
1051	close (sigpipe [0]);	1335	close (evpipe [0]);
1052	close (sigpipe [1]);	1336	close (evpipe [1]);
		1337	}
1053		1338
1054	while (pipe (sigpipe))
1055	syserr ("(libev) error creating pipe");
1056
1057	siginit (EV_A);	1339	evpipe_init (EV_A);
		1340	/* now iterate over everything, in case we missed something */
		1341	pipecb (EV_A_ &pipeev, EV_READ);
1058	}	1342	}
1059		1343
1060	postfork = 0;	1344	postfork = 0;
1061	}	1345	}
1062		1346
…		…
1084	}	1368	}
1085		1369
1086	void	1370	void
1087	ev_loop_fork (EV_P)	1371	ev_loop_fork (EV_P)
1088	{	1372	{
1089	postfork = 1;	1373	postfork = 1; /* must be in line with ev_default_fork */
1090	}	1374	}
1091		1375
1092	#endif	1376	#endif
1093		1377
1094	#if EV_MULTIPLICITY	1378	#if EV_MULTIPLICITY
…		…
1097	#else	1381	#else
1098	int	1382	int
1099	ev_default_loop (unsigned int flags)	1383	ev_default_loop (unsigned int flags)
1100	#endif	1384	#endif
1101	{	1385	{
1102	if (sigpipe [0] == sigpipe [1])
1103	if (pipe (sigpipe))
1104	return 0;
1105
1106	if (!ev_default_loop_ptr)	1386	if (!ev_default_loop_ptr)
1107	{	1387	{
1108	#if EV_MULTIPLICITY	1388	#if EV_MULTIPLICITY
1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1389	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1110	#else	1390	#else
…		…
1113		1393
1114	loop_init (EV_A_ flags);	1394	loop_init (EV_A_ flags);
1115		1395
1116	if (ev_backend (EV_A))	1396	if (ev_backend (EV_A))
1117	{	1397	{
1118	siginit (EV_A);
1119
1120	#ifndef _WIN32	1398	#ifndef _WIN32
1121	ev_signal_init (&childev, childcb, SIGCHLD);	1399	ev_signal_init (&childev, childcb, SIGCHLD);
1122	ev_set_priority (&childev, EV_MAXPRI);	1400	ev_set_priority (&childev, EV_MAXPRI);
1123	ev_signal_start (EV_A_ &childev);	1401	ev_signal_start (EV_A_ &childev);
1124	ev_unref (EV_A); /* child watcher should not keep loop alive */	1402	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1141	#ifndef _WIN32	1419	#ifndef _WIN32
1142	ev_ref (EV_A); /* child watcher */	1420	ev_ref (EV_A); /* child watcher */
1143	ev_signal_stop (EV_A_ &childev);	1421	ev_signal_stop (EV_A_ &childev);
1144	#endif	1422	#endif
1145		1423
1146	ev_ref (EV_A); /* signal watcher */
1147	ev_io_stop (EV_A_ &sigev);
1148
1149	close (sigpipe [0]); sigpipe [0] = 0;
1150	close (sigpipe [1]); sigpipe [1] = 0;
1151
1152	loop_destroy (EV_A);	1424	loop_destroy (EV_A);
1153	}	1425	}
1154		1426
1155	void	1427	void
1156	ev_default_fork (void)	1428	ev_default_fork (void)
…		…
1158	#if EV_MULTIPLICITY	1430	#if EV_MULTIPLICITY
1159	struct ev_loop *loop = ev_default_loop_ptr;	1431	struct ev_loop *loop = ev_default_loop_ptr;
1160	#endif	1432	#endif
1161		1433
1162	if (backend)	1434	if (backend)
1163	postfork = 1;	1435	postfork = 1; /* must be in line with ev_loop_fork */
1164	}	1436	}
1165		1437
1166	/*****************************************************************************/	1438	/*****************************************************************************/
		1439
		1440	void
		1441	ev_invoke (EV_P_ void *w, int revents)
		1442	{
		1443	EV_CB_INVOKE ((W)w, revents);
		1444	}
1167		1445
1168	void inline_speed	1446	void inline_speed
1169	call_pending (EV_P)	1447	call_pending (EV_P)
1170	{	1448	{
1171	int pri;	1449	int pri;
…		…
1186	}	1464	}
1187		1465
1188	void inline_size	1466	void inline_size
1189	timers_reify (EV_P)	1467	timers_reify (EV_P)
1190	{	1468	{
1191	while (timercnt && ((WT)timers [0])->at <= mn_now)	1469	while (timercnt && ev_at (timers [1]) <= mn_now)
1192	{	1470	{
1193	ev_timer *w = timers [0];	1471	ev_timer *w = (ev_timer *)timers [1];
1194		1472
1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/	1473	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1196		1474
1197	/* first reschedule or stop timer */	1475	/* first reschedule or stop timer */
1198	if (w->repeat)	1476	if (w->repeat)
1199	{	1477	{
1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1478	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1201		1479
1202	((WT)w)->at += w->repeat;	1480	ev_at (w) += w->repeat;
1203	if (((WT)w)->at < mn_now)	1481	if (ev_at (w) < mn_now)
1204	((WT)w)->at = mn_now;	1482	ev_at (w) = mn_now;
1205		1483
1206	downheap ((WT *)timers, timercnt, 0);	1484	downheap (timers, timercnt, 1);
1207	}	1485	}
1208	else	1486	else
1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1487	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1210		1488
1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1489	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1214		1492
1215	#if EV_PERIODIC_ENABLE	1493	#if EV_PERIODIC_ENABLE
1216	void inline_size	1494	void inline_size
1217	periodics_reify (EV_P)	1495	periodics_reify (EV_P)
1218	{	1496	{
1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1497	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1220	{	1498	{
1221	ev_periodic *w = periodics [0];	1499	ev_periodic *w = (ev_periodic *)periodics [1];
1222		1500
1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1501	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1224		1502
1225	/* first reschedule or stop timer */	1503	/* first reschedule or stop timer */
1226	if (w->reschedule_cb)	1504	if (w->reschedule_cb)
1227	{	1505	{
1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1506	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1507	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1230	downheap ((WT *)periodics, periodiccnt, 0);	1508	downheap (periodics, periodiccnt, 1);
1231	}	1509	}
1232	else if (w->interval)	1510	else if (w->interval)
1233	{	1511	{
1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1512	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1513	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1514	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1236	downheap ((WT *)periodics, periodiccnt, 0);	1515	downheap (periodics, periodiccnt, 1);
1237	}	1516	}
1238	else	1517	else
1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1518	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1240		1519
1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1520	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1246	periodics_reschedule (EV_P)	1525	periodics_reschedule (EV_P)
1247	{	1526	{
1248	int i;	1527	int i;
1249		1528
1250	/* adjust periodics after time jump */	1529	/* adjust periodics after time jump */
1251	for (i = 0; i < periodiccnt; ++i)	1530	for (i = 1; i <= periodiccnt; ++i)
1252	{	1531	{
1253	ev_periodic *w = periodics [i];	1532	ev_periodic *w = (ev_periodic *)periodics [i];
1254		1533
1255	if (w->reschedule_cb)	1534	if (w->reschedule_cb)
1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1535	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1257	else if (w->interval)	1536	else if (w->interval)
1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1537	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1259	}	1538	}
1260		1539
1261	/* now rebuild the heap */	1540	/* now rebuild the heap */
1262	for (i = periodiccnt >> 1; i--; )	1541	for (i = periodiccnt >> 1; i--; )
1263	downheap ((WT *)periodics, periodiccnt, i);	1542	downheap (periodics, periodiccnt, i);
1264	}	1543	}
1265	#endif	1544	#endif
1266		1545
1267	#if EV_IDLE_ENABLE	1546	#if EV_IDLE_ENABLE
1268	void inline_size	1547	void inline_size
…		…
1285	}	1564	}
1286	}	1565	}
1287	}	1566	}
1288	#endif	1567	#endif
1289		1568
1290	int inline_size	1569	void inline_speed
1291	time_update_monotonic (EV_P)	1570	time_update (EV_P_ ev_tstamp max_block)
1292	{	1571	{
		1572	int i;
		1573
		1574	#if EV_USE_MONOTONIC
		1575	if (expect_true (have_monotonic))
		1576	{
		1577	ev_tstamp odiff = rtmn_diff;
		1578
1293	mn_now = get_clock ();	1579	mn_now = get_clock ();
1294		1580
		1581	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1582	/* interpolate in the meantime */
1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1583	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1296	{	1584	{
1297	ev_rt_now = rtmn_diff + mn_now;	1585	ev_rt_now = rtmn_diff + mn_now;
1298	return 0;	1586	return;
1299	}	1587	}
1300	else	1588
1301	{
1302	now_floor = mn_now;	1589	now_floor = mn_now;
1303	ev_rt_now = ev_time ();	1590	ev_rt_now = ev_time ();
1304	return 1;
1305	}
1306	}
1307		1591
1308	void inline_size	1592	/* loop a few times, before making important decisions.
1309	time_update (EV_P)	1593	* on the choice of "4": one iteration isn't enough,
1310	{	1594	* in case we get preempted during the calls to
1311	int i;	1595	* ev_time and get_clock. a second call is almost guaranteed
1312		1596	* to succeed in that case, though. and looping a few more times
1313	#if EV_USE_MONOTONIC	1597	* doesn't hurt either as we only do this on time-jumps or
1314	if (expect_true (have_monotonic))	1598	* in the unlikely event of having been preempted here.
1315	{	1599	*/
1316	if (time_update_monotonic (EV_A))	1600	for (i = 4; --i; )
1317	{	1601	{
1318	ev_tstamp odiff = rtmn_diff;
1319
1320	/* loop a few times, before making important decisions.
1321	* on the choice of "4": one iteration isn't enough,
1322	* in case we get preempted during the calls to
1323	* ev_time and get_clock. a second call is almost guaranteed
1324	* to succeed in that case, though. and looping a few more times
1325	* doesn't hurt either as we only do this on time-jumps or
1326	* in the unlikely event of having been preempted here.
1327	*/
1328	for (i = 4; --i; )
1329	{
1330	rtmn_diff = ev_rt_now - mn_now;	1602	rtmn_diff = ev_rt_now - mn_now;
1331		1603
1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1604	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1333	return; /* all is well */	1605	return; /* all is well */
1334		1606
1335	ev_rt_now = ev_time ();	1607	ev_rt_now = ev_time ();
1336	mn_now = get_clock ();	1608	mn_now = get_clock ();
1337	now_floor = mn_now;	1609	now_floor = mn_now;
1338	}	1610	}
1339		1611
1340	# if EV_PERIODIC_ENABLE	1612	# if EV_PERIODIC_ENABLE
1341	periodics_reschedule (EV_A);	1613	periodics_reschedule (EV_A);
1342	# endif	1614	# endif
1343	/* no timer adjustment, as the monotonic clock doesn't jump */	1615	/* no timer adjustment, as the monotonic clock doesn't jump */
1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1616	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1345	}
1346	}	1617	}
1347	else	1618	else
1348	#endif	1619	#endif
1349	{	1620	{
1350	ev_rt_now = ev_time ();	1621	ev_rt_now = ev_time ();
1351		1622
1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1623	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1353	{	1624	{
1354	#if EV_PERIODIC_ENABLE	1625	#if EV_PERIODIC_ENABLE
1355	periodics_reschedule (EV_A);	1626	periodics_reschedule (EV_A);
1356	#endif	1627	#endif
1357
1358	/* adjust timers. this is easy, as the offset is the same for all of them */	1628	/* adjust timers. this is easy, as the offset is the same for all of them */
1359	for (i = 0; i < timercnt; ++i)	1629	for (i = 1; i <= timercnt; ++i)
1360	((WT)timers [i])->at += ev_rt_now - mn_now;	1630	ev_at (timers [i]) += ev_rt_now - mn_now;
1361	}	1631	}
1362		1632
1363	mn_now = ev_rt_now;	1633	mn_now = ev_rt_now;
1364	}	1634	}
1365	}	1635	}
…		…
1379	static int loop_done;	1649	static int loop_done;
1380		1650
1381	void	1651	void
1382	ev_loop (EV_P_ int flags)	1652	ev_loop (EV_P_ int flags)
1383	{	1653	{
1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1654	loop_done = EVUNLOOP_CANCEL;
1385	? EVUNLOOP_ONE
1386	: EVUNLOOP_CANCEL;
1387		1655
1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1656	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1389		1657
1390	do	1658	do
1391	{	1659	{
…		…
1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1674	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1407	call_pending (EV_A);	1675	call_pending (EV_A);
1408	}	1676	}
1409	#endif	1677	#endif
1410		1678
1411	/* queue check watchers (and execute them) */	1679	/* queue prepare watchers (and execute them) */
1412	if (expect_false (preparecnt))	1680	if (expect_false (preparecnt))
1413	{	1681	{
1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1682	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1415	call_pending (EV_A);	1683	call_pending (EV_A);
1416	}	1684	}
…		…
1425	/* update fd-related kernel structures */	1693	/* update fd-related kernel structures */
1426	fd_reify (EV_A);	1694	fd_reify (EV_A);
1427		1695
1428	/* calculate blocking time */	1696	/* calculate blocking time */
1429	{	1697	{
1430	ev_tstamp block;	1698	ev_tstamp waittime = 0.;
		1699	ev_tstamp sleeptime = 0.;
1431		1700
1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1701	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1433	block = 0.; /* do not block at all */
1434	else
1435	{	1702	{
1436	/* update time to cancel out callback processing overhead */	1703	/* update time to cancel out callback processing overhead */
1437	#if EV_USE_MONOTONIC
1438	if (expect_true (have_monotonic))
1439	time_update_monotonic (EV_A);	1704	time_update (EV_A_ 1e100);
1440	else
1441	#endif
1442	{
1443	ev_rt_now = ev_time ();
1444	mn_now = ev_rt_now;
1445	}
1446		1705
1447	block = MAX_BLOCKTIME;	1706	waittime = MAX_BLOCKTIME;
1448		1707
1449	if (timercnt)	1708	if (timercnt)
1450	{	1709	{
1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1710	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1452	if (block > to) block = to;	1711	if (waittime > to) waittime = to;
1453	}	1712	}
1454		1713
1455	#if EV_PERIODIC_ENABLE	1714	#if EV_PERIODIC_ENABLE
1456	if (periodiccnt)	1715	if (periodiccnt)
1457	{	1716	{
1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1717	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1459	if (block > to) block = to;	1718	if (waittime > to) waittime = to;
1460	}	1719	}
1461	#endif	1720	#endif
1462		1721
1463	if (expect_false (block < 0.)) block = 0.;	1722	if (expect_false (waittime < timeout_blocktime))
		1723	waittime = timeout_blocktime;
		1724
		1725	sleeptime = waittime - backend_fudge;
		1726
		1727	if (expect_true (sleeptime > io_blocktime))
		1728	sleeptime = io_blocktime;
		1729
		1730	if (sleeptime)
		1731	{
		1732	ev_sleep (sleeptime);
		1733	waittime -= sleeptime;
		1734	}
1464	}	1735	}
1465		1736
1466	++loop_count;	1737	++loop_count;
1467	backend_poll (EV_A_ block);	1738	backend_poll (EV_A_ waittime);
		1739
		1740	/* update ev_rt_now, do magic */
		1741	time_update (EV_A_ waittime + sleeptime);
1468	}	1742	}
1469
1470	/* update ev_rt_now, do magic */
1471	time_update (EV_A);
1472		1743
1473	/* queue pending timers and reschedule them */	1744	/* queue pending timers and reschedule them */
1474	timers_reify (EV_A); /* relative timers called last */	1745	timers_reify (EV_A); /* relative timers called last */
1475	#if EV_PERIODIC_ENABLE	1746	#if EV_PERIODIC_ENABLE
1476	periodics_reify (EV_A); /* absolute timers called first */	1747	periodics_reify (EV_A); /* absolute timers called first */
…		…
1484	/* queue check watchers, to be executed first */	1755	/* queue check watchers, to be executed first */
1485	if (expect_false (checkcnt))	1756	if (expect_false (checkcnt))
1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1757	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1487		1758
1488	call_pending (EV_A);	1759	call_pending (EV_A);
1489
1490	}	1760	}
1491	while (expect_true (activecnt && !loop_done));	1761	while (expect_true (
		1762	activecnt
		1763	&& !loop_done
		1764	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1765	));
1492		1766
1493	if (loop_done == EVUNLOOP_ONE)	1767	if (loop_done == EVUNLOOP_ONE)
1494	loop_done = EVUNLOOP_CANCEL;	1768	loop_done = EVUNLOOP_CANCEL;
1495	}	1769	}
1496		1770
…		…
1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1806	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1533	w->pending = 0;	1807	w->pending = 0;
1534	}	1808	}
1535	}	1809	}
1536		1810
1537	void	1811	int
1538	ev_clear_pending (EV_P_ void *w, int invoke)	1812	ev_clear_pending (EV_P_ void *w)
1539	{	1813	{
1540	W w_ = (W)w;	1814	W w_ = (W)w;
1541	int pending = w_->pending;	1815	int pending = w_->pending;
1542		1816
1543	if (pending)	1817	if (expect_true (pending))
1544	{	1818	{
1545	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	1819	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1546
1547	w_->pending = 0;	1820	w_->pending = 0;
1548	p->w = 0;	1821	p->w = 0;
1549		1822	return p->events;
1550	if (invoke)
1551	EV_CB_INVOKE (w_, p->events);
1552	}	1823	}
		1824	else
		1825	return 0;
1553	}	1826	}
1554		1827
1555	void inline_size	1828	void inline_size
1556	pri_adjust (EV_P_ W w)	1829	pri_adjust (EV_P_ W w)
1557	{	1830	{
…		…
1576	w->active = 0;	1849	w->active = 0;
1577	}	1850	}
1578		1851
1579	/*****************************************************************************/	1852	/*****************************************************************************/
1580		1853
1581	void	1854	void noinline
1582	ev_io_start (EV_P_ ev_io *w)	1855	ev_io_start (EV_P_ ev_io *w)
1583	{	1856	{
1584	int fd = w->fd;	1857	int fd = w->fd;
1585		1858
1586	if (expect_false (ev_is_active (w)))	1859	if (expect_false (ev_is_active (w)))
…		…
1588		1861
1589	assert (("ev_io_start called with negative fd", fd >= 0));	1862	assert (("ev_io_start called with negative fd", fd >= 0));
1590		1863
1591	ev_start (EV_A_ (W)w, 1);	1864	ev_start (EV_A_ (W)w, 1);
1592	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1865	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1593	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1866	wlist_add (&anfds[fd].head, (WL)w);
1594		1867
1595	fd_change (EV_A_ fd);	1868	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1869	w->events &= ~EV_IOFDSET;
1596	}	1870	}
1597		1871
1598	void	1872	void noinline
1599	ev_io_stop (EV_P_ ev_io *w)	1873	ev_io_stop (EV_P_ ev_io *w)
1600	{	1874	{
1601	clear_pending (EV_A_ (W)w);	1875	clear_pending (EV_A_ (W)w);
1602	if (expect_false (!ev_is_active (w)))	1876	if (expect_false (!ev_is_active (w)))
1603	return;	1877	return;
1604		1878
1605	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1879	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1606		1880
1607	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1881	wlist_del (&anfds[w->fd].head, (WL)w);
1608	ev_stop (EV_A_ (W)w);	1882	ev_stop (EV_A_ (W)w);
1609		1883
1610	fd_change (EV_A_ w->fd);	1884	fd_change (EV_A_ w->fd, 1);
1611	}	1885	}
1612		1886
1613	void	1887	void noinline
1614	ev_timer_start (EV_P_ ev_timer *w)	1888	ev_timer_start (EV_P_ ev_timer *w)
1615	{	1889	{
1616	if (expect_false (ev_is_active (w)))	1890	if (expect_false (ev_is_active (w)))
1617	return;	1891	return;
1618		1892
1619	((WT)w)->at += mn_now;	1893	ev_at (w) += mn_now;
1620		1894
1621	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1895	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1622		1896
1623	ev_start (EV_A_ (W)w, ++timercnt);	1897	ev_start (EV_A_ (W)w, ++timercnt);
1624	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1898	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1625	timers [timercnt - 1] = w;	1899	timers [timercnt] = (WT)w;
1626	upheap ((WT *)timers, timercnt - 1);	1900	upheap (timers, timercnt);
1627		1901
1628	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	1902	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1629	}	1903	}
1630		1904
1631	void	1905	void noinline
1632	ev_timer_stop (EV_P_ ev_timer *w)	1906	ev_timer_stop (EV_P_ ev_timer *w)
1633	{	1907	{
1634	clear_pending (EV_A_ (W)w);	1908	clear_pending (EV_A_ (W)w);
1635	if (expect_false (!ev_is_active (w)))	1909	if (expect_false (!ev_is_active (w)))
1636	return;	1910	return;
1637		1911
1638	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1639
1640	{	1912	{
1641	int active = ((W)w)->active;	1913	int active = ev_active (w);
1642		1914
		1915	assert (("internal timer heap corruption", timers [active] == (WT)w));
		1916
1643	if (expect_true (--active < --timercnt))	1917	if (expect_true (active < timercnt))
1644	{	1918	{
1645	timers [active] = timers [timercnt];	1919	timers [active] = timers [timercnt];
1646	adjustheap ((WT *)timers, timercnt, active);	1920	adjustheap (timers, timercnt, active);
1647	}	1921	}
		1922
		1923	--timercnt;
1648	}	1924	}
1649		1925
1650	((WT)w)->at -= mn_now;	1926	ev_at (w) -= mn_now;
1651		1927
1652	ev_stop (EV_A_ (W)w);	1928	ev_stop (EV_A_ (W)w);
1653	}	1929	}
1654		1930
1655	void	1931	void noinline
1656	ev_timer_again (EV_P_ ev_timer *w)	1932	ev_timer_again (EV_P_ ev_timer *w)
1657	{	1933	{
1658	if (ev_is_active (w))	1934	if (ev_is_active (w))
1659	{	1935	{
1660	if (w->repeat)	1936	if (w->repeat)
1661	{	1937	{
1662	((WT)w)->at = mn_now + w->repeat;	1938	ev_at (w) = mn_now + w->repeat;
1663	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1939	adjustheap (timers, timercnt, ev_active (w));
1664	}	1940	}
1665	else	1941	else
1666	ev_timer_stop (EV_A_ w);	1942	ev_timer_stop (EV_A_ w);
1667	}	1943	}
1668	else if (w->repeat)	1944	else if (w->repeat)
1669	{	1945	{
1670	w->at = w->repeat;	1946	ev_at (w) = w->repeat;
1671	ev_timer_start (EV_A_ w);	1947	ev_timer_start (EV_A_ w);
1672	}	1948	}
1673	}	1949	}
1674		1950
1675	#if EV_PERIODIC_ENABLE	1951	#if EV_PERIODIC_ENABLE
1676	void	1952	void noinline
1677	ev_periodic_start (EV_P_ ev_periodic *w)	1953	ev_periodic_start (EV_P_ ev_periodic *w)
1678	{	1954	{
1679	if (expect_false (ev_is_active (w)))	1955	if (expect_false (ev_is_active (w)))
1680	return;	1956	return;
1681		1957
1682	if (w->reschedule_cb)	1958	if (w->reschedule_cb)
1683	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1959	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1684	else if (w->interval)	1960	else if (w->interval)
1685	{	1961	{
1686	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1962	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1687	/* this formula differs from the one in periodic_reify because we do not always round up */	1963	/* this formula differs from the one in periodic_reify because we do not always round up */
1688	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1964	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1689	}	1965	}
		1966	else
		1967	ev_at (w) = w->offset;
1690		1968
1691	ev_start (EV_A_ (W)w, ++periodiccnt);	1969	ev_start (EV_A_ (W)w, ++periodiccnt);
1692	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1970	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1693	periodics [periodiccnt - 1] = w;	1971	periodics [periodiccnt] = (WT)w;
1694	upheap ((WT *)periodics, periodiccnt - 1);	1972	upheap (periodics, periodiccnt);
1695		1973
1696	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	1974	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1697	}	1975	}
1698		1976
1699	void	1977	void noinline
1700	ev_periodic_stop (EV_P_ ev_periodic *w)	1978	ev_periodic_stop (EV_P_ ev_periodic *w)
1701	{	1979	{
1702	clear_pending (EV_A_ (W)w);	1980	clear_pending (EV_A_ (W)w);
1703	if (expect_false (!ev_is_active (w)))	1981	if (expect_false (!ev_is_active (w)))
1704	return;	1982	return;
1705		1983
1706	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1707
1708	{	1984	{
1709	int active = ((W)w)->active;	1985	int active = ev_active (w);
1710		1986
		1987	assert (("internal periodic heap corruption", periodics [active] == (WT)w));
		1988
1711	if (expect_true (--active < --periodiccnt))	1989	if (expect_true (active < periodiccnt))
1712	{	1990	{
1713	periodics [active] = periodics [periodiccnt];	1991	periodics [active] = periodics [periodiccnt];
1714	adjustheap ((WT *)periodics, periodiccnt, active);	1992	adjustheap (periodics, periodiccnt, active);
1715	}	1993	}
		1994
		1995	--periodiccnt;
1716	}	1996	}
1717		1997
1718	ev_stop (EV_A_ (W)w);	1998	ev_stop (EV_A_ (W)w);
1719	}	1999	}
1720		2000
1721	void	2001	void noinline
1722	ev_periodic_again (EV_P_ ev_periodic *w)	2002	ev_periodic_again (EV_P_ ev_periodic *w)
1723	{	2003	{
1724	/* TODO: use adjustheap and recalculation */	2004	/* TODO: use adjustheap and recalculation */
1725	ev_periodic_stop (EV_A_ w);	2005	ev_periodic_stop (EV_A_ w);
1726	ev_periodic_start (EV_A_ w);	2006	ev_periodic_start (EV_A_ w);
…		…
1729		2009
1730	#ifndef SA_RESTART	2010	#ifndef SA_RESTART
1731	# define SA_RESTART 0	2011	# define SA_RESTART 0
1732	#endif	2012	#endif
1733		2013
1734	void	2014	void noinline
1735	ev_signal_start (EV_P_ ev_signal *w)	2015	ev_signal_start (EV_P_ ev_signal *w)
1736	{	2016	{
1737	#if EV_MULTIPLICITY	2017	#if EV_MULTIPLICITY
1738	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2018	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1739	#endif	2019	#endif
1740	if (expect_false (ev_is_active (w)))	2020	if (expect_false (ev_is_active (w)))
1741	return;	2021	return;
1742		2022
1743	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2023	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1744		2024
		2025	evpipe_init (EV_A);
		2026
		2027	{
		2028	#ifndef _WIN32
		2029	sigset_t full, prev;
		2030	sigfillset (&full);
		2031	sigprocmask (SIG_SETMASK, &full, &prev);
		2032	#endif
		2033
		2034	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2035
		2036	#ifndef _WIN32
		2037	sigprocmask (SIG_SETMASK, &prev, 0);
		2038	#endif
		2039	}
		2040
1745	ev_start (EV_A_ (W)w, 1);	2041	ev_start (EV_A_ (W)w, 1);
1746	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1747	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2042	wlist_add (&signals [w->signum - 1].head, (WL)w);
1748		2043
1749	if (!((WL)w)->next)	2044	if (!((WL)w)->next)
1750	{	2045	{
1751	#if _WIN32	2046	#if _WIN32
1752	signal (w->signum, sighandler);	2047	signal (w->signum, ev_sighandler);
1753	#else	2048	#else
1754	struct sigaction sa;	2049	struct sigaction sa;
1755	sa.sa_handler = sighandler;	2050	sa.sa_handler = ev_sighandler;
1756	sigfillset (&sa.sa_mask);	2051	sigfillset (&sa.sa_mask);
1757	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2052	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1758	sigaction (w->signum, &sa, 0);	2053	sigaction (w->signum, &sa, 0);
1759	#endif	2054	#endif
1760	}	2055	}
1761	}	2056	}
1762		2057
1763	void	2058	void noinline
1764	ev_signal_stop (EV_P_ ev_signal *w)	2059	ev_signal_stop (EV_P_ ev_signal *w)
1765	{	2060	{
1766	clear_pending (EV_A_ (W)w);	2061	clear_pending (EV_A_ (W)w);
1767	if (expect_false (!ev_is_active (w)))	2062	if (expect_false (!ev_is_active (w)))
1768	return;	2063	return;
1769		2064
1770	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2065	wlist_del (&signals [w->signum - 1].head, (WL)w);
1771	ev_stop (EV_A_ (W)w);	2066	ev_stop (EV_A_ (W)w);
1772		2067
1773	if (!signals [w->signum - 1].head)	2068	if (!signals [w->signum - 1].head)
1774	signal (w->signum, SIG_DFL);	2069	signal (w->signum, SIG_DFL);
1775	}	2070	}
…		…
1782	#endif	2077	#endif
1783	if (expect_false (ev_is_active (w)))	2078	if (expect_false (ev_is_active (w)))
1784	return;	2079	return;
1785		2080
1786	ev_start (EV_A_ (W)w, 1);	2081	ev_start (EV_A_ (W)w, 1);
1787	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2082	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1788	}	2083	}
1789		2084
1790	void	2085	void
1791	ev_child_stop (EV_P_ ev_child *w)	2086	ev_child_stop (EV_P_ ev_child *w)
1792	{	2087	{
1793	clear_pending (EV_A_ (W)w);	2088	clear_pending (EV_A_ (W)w);
1794	if (expect_false (!ev_is_active (w)))	2089	if (expect_false (!ev_is_active (w)))
1795	return;	2090	return;
1796		2091
1797	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2092	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1798	ev_stop (EV_A_ (W)w);	2093	ev_stop (EV_A_ (W)w);
1799	}	2094	}
1800		2095
1801	#if EV_STAT_ENABLE	2096	#if EV_STAT_ENABLE
1802		2097
…		…
1821	if (w->wd < 0)	2116	if (w->wd < 0)
1822	{	2117	{
1823	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2118	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1824		2119
1825	/* monitor some parent directory for speedup hints */	2120	/* monitor some parent directory for speedup hints */
		2121	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2122	/* but an efficiency issue only */
1826	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2123	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1827	{	2124	{
1828	char path [4096];	2125	char path [4096];
1829	strcpy (path, w->path);	2126	strcpy (path, w->path);
1830		2127
…		…
2075	clear_pending (EV_A_ (W)w);	2372	clear_pending (EV_A_ (W)w);
2076	if (expect_false (!ev_is_active (w)))	2373	if (expect_false (!ev_is_active (w)))
2077	return;	2374	return;
2078		2375
2079	{	2376	{
2080	int active = ((W)w)->active;	2377	int active = ev_active (w);
2081		2378
2082	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2379	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2083	((W)idles [ABSPRI (w)][active - 1])->active = active;	2380	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2084		2381
2085	ev_stop (EV_A_ (W)w);	2382	ev_stop (EV_A_ (W)w);
2086	--idleall;	2383	--idleall;
2087	}	2384	}
2088	}	2385	}
…		…
2105	clear_pending (EV_A_ (W)w);	2402	clear_pending (EV_A_ (W)w);
2106	if (expect_false (!ev_is_active (w)))	2403	if (expect_false (!ev_is_active (w)))
2107	return;	2404	return;
2108		2405
2109	{	2406	{
2110	int active = ((W)w)->active;	2407	int active = ev_active (w);
		2408
2111	prepares [active - 1] = prepares [--preparecnt];	2409	prepares [active - 1] = prepares [--preparecnt];
2112	((W)prepares [active - 1])->active = active;	2410	ev_active (prepares [active - 1]) = active;
2113	}	2411	}
2114		2412
2115	ev_stop (EV_A_ (W)w);	2413	ev_stop (EV_A_ (W)w);
2116	}	2414	}
2117		2415
…		…
2132	clear_pending (EV_A_ (W)w);	2430	clear_pending (EV_A_ (W)w);
2133	if (expect_false (!ev_is_active (w)))	2431	if (expect_false (!ev_is_active (w)))
2134	return;	2432	return;
2135		2433
2136	{	2434	{
2137	int active = ((W)w)->active;	2435	int active = ev_active (w);
		2436
2138	checks [active - 1] = checks [--checkcnt];	2437	checks [active - 1] = checks [--checkcnt];
2139	((W)checks [active - 1])->active = active;	2438	ev_active (checks [active - 1]) = active;
2140	}	2439	}
2141		2440
2142	ev_stop (EV_A_ (W)w);	2441	ev_stop (EV_A_ (W)w);
2143	}	2442	}
2144		2443
2145	#if EV_EMBED_ENABLE	2444	#if EV_EMBED_ENABLE
2146	void noinline	2445	void noinline
2147	ev_embed_sweep (EV_P_ ev_embed *w)	2446	ev_embed_sweep (EV_P_ ev_embed *w)
2148	{	2447	{
2149	ev_loop (w->loop, EVLOOP_NONBLOCK);	2448	ev_loop (w->other, EVLOOP_NONBLOCK);
2150	}	2449	}
2151		2450
2152	static void	2451	static void
2153	embed_cb (EV_P_ ev_io *io, int revents)	2452	embed_io_cb (EV_P_ ev_io *io, int revents)
2154	{	2453	{
2155	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2454	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2156		2455
2157	if (ev_cb (w))	2456	if (ev_cb (w))
2158	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2457	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2159	else	2458	else
2160	ev_embed_sweep (loop, w);	2459	ev_loop (w->other, EVLOOP_NONBLOCK);
2161	}	2460	}
		2461
		2462	static void
		2463	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2464	{
		2465	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2466
		2467	{
		2468	struct ev_loop *loop = w->other;
		2469
		2470	while (fdchangecnt)
		2471	{
		2472	fd_reify (EV_A);
		2473	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2474	}
		2475	}
		2476	}
		2477
		2478	#if 0
		2479	static void
		2480	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2481	{
		2482	ev_idle_stop (EV_A_ idle);
		2483	}
		2484	#endif
2162		2485
2163	void	2486	void
2164	ev_embed_start (EV_P_ ev_embed *w)	2487	ev_embed_start (EV_P_ ev_embed *w)
2165	{	2488	{
2166	if (expect_false (ev_is_active (w)))	2489	if (expect_false (ev_is_active (w)))
2167	return;	2490	return;
2168		2491
2169	{	2492	{
2170	struct ev_loop *loop = w->loop;	2493	struct ev_loop *loop = w->other;
2171	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2494	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2172	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2495	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2173	}	2496	}
2174		2497
2175	ev_set_priority (&w->io, ev_priority (w));	2498	ev_set_priority (&w->io, ev_priority (w));
2176	ev_io_start (EV_A_ &w->io);	2499	ev_io_start (EV_A_ &w->io);
2177		2500
		2501	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2502	ev_set_priority (&w->prepare, EV_MINPRI);
		2503	ev_prepare_start (EV_A_ &w->prepare);
		2504
		2505	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2506
2178	ev_start (EV_A_ (W)w, 1);	2507	ev_start (EV_A_ (W)w, 1);
2179	}	2508	}
2180		2509
2181	void	2510	void
2182	ev_embed_stop (EV_P_ ev_embed *w)	2511	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2184	clear_pending (EV_A_ (W)w);	2513	clear_pending (EV_A_ (W)w);
2185	if (expect_false (!ev_is_active (w)))	2514	if (expect_false (!ev_is_active (w)))
2186	return;	2515	return;
2187		2516
2188	ev_io_stop (EV_A_ &w->io);	2517	ev_io_stop (EV_A_ &w->io);
		2518	ev_prepare_stop (EV_A_ &w->prepare);
2189		2519
2190	ev_stop (EV_A_ (W)w);	2520	ev_stop (EV_A_ (W)w);
2191	}	2521	}
2192	#endif	2522	#endif
2193		2523
…		…
2209	clear_pending (EV_A_ (W)w);	2539	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2540	if (expect_false (!ev_is_active (w)))
2211	return;	2541	return;
2212		2542
2213	{	2543	{
2214	int active = ((W)w)->active;	2544	int active = ev_active (w);
		2545
2215	forks [active - 1] = forks [--forkcnt];	2546	forks [active - 1] = forks [--forkcnt];
2216	((W)forks [active - 1])->active = active;	2547	ev_active (forks [active - 1]) = active;
2217	}	2548	}
2218		2549
2219	ev_stop (EV_A_ (W)w);	2550	ev_stop (EV_A_ (W)w);
		2551	}
		2552	#endif
		2553
		2554	#if EV_ASYNC_ENABLE
		2555	void
		2556	ev_async_start (EV_P_ ev_async *w)
		2557	{
		2558	if (expect_false (ev_is_active (w)))
		2559	return;
		2560
		2561	evpipe_init (EV_A);
		2562
		2563	ev_start (EV_A_ (W)w, ++asynccnt);
		2564	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2565	asyncs [asynccnt - 1] = w;
		2566	}
		2567
		2568	void
		2569	ev_async_stop (EV_P_ ev_async *w)
		2570	{
		2571	clear_pending (EV_A_ (W)w);
		2572	if (expect_false (!ev_is_active (w)))
		2573	return;
		2574
		2575	{
		2576	int active = ev_active (w);
		2577
		2578	asyncs [active - 1] = asyncs [--asynccnt];
		2579	ev_active (asyncs [active - 1]) = active;
		2580	}
		2581
		2582	ev_stop (EV_A_ (W)w);
		2583	}
		2584
		2585	void
		2586	ev_async_send (EV_P_ ev_async *w)
		2587	{
		2588	w->sent = 1;
		2589	evpipe_write (EV_A_ &gotasync);
2220	}	2590	}
2221	#endif	2591	#endif
2222		2592
2223	/*****************************************************************************/	2593	/*****************************************************************************/
2224		2594
…		…
2282	ev_timer_set (&once->to, timeout, 0.);	2652	ev_timer_set (&once->to, timeout, 0.);
2283	ev_timer_start (EV_A_ &once->to);	2653	ev_timer_start (EV_A_ &once->to);
2284	}	2654	}
2285	}	2655	}
2286		2656
		2657	#if EV_MULTIPLICITY
		2658	#include "ev_wrap.h"
		2659	#endif
		2660
2287	#ifdef __cplusplus	2661	#ifdef __cplusplus
2288	}	2662	}
2289	#endif	2663	#endif
2290		2664

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