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Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.250 by root, Thu May 22 02:44:57 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	#if 0 /* debugging */
		241	# define EV_VERIFY 3
		242	# define EV_USE_4HEAP 1
		243	# define EV_HEAP_CACHE_AT 1
		244	#endif
		245
		246	#ifndef EV_VERIFY
		247	# define EV_VERIFY !EV_MINIMAL
		248	#endif
		249
		250	#ifndef EV_USE_4HEAP
		251	# define EV_USE_4HEAP !EV_MINIMAL
		252	#endif
		253
		254	#ifndef EV_HEAP_CACHE_AT
		255	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		256	#endif
		257
		258	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		259
197	#ifndef CLOCK_MONOTONIC	260	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	261	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	262	# define EV_USE_MONOTONIC 0
200	#endif	263	#endif
…		…
202	#ifndef CLOCK_REALTIME	265	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	266	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	267	# define EV_USE_REALTIME 0
205	#endif	268	#endif
206		269
		270	#if !EV_STAT_ENABLE
		271	# undef EV_USE_INOTIFY
		272	# define EV_USE_INOTIFY 0
		273	#endif
		274
		275	#if !EV_USE_NANOSLEEP
		276	# ifndef _WIN32
		277	# include <sys/select.h>
		278	# endif
		279	#endif
		280
		281	#if EV_USE_INOTIFY
		282	# include <sys/inotify.h>
		283	#endif
		284
207	#if EV_SELECT_IS_WINSOCKET	285	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	286	# include <winsock.h>
209	#endif	287	#endif
210		288
211	#if !EV_STAT_ENABLE	289	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	290	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		291	# include <stdint.h>
		292	# ifdef __cplusplus
		293	extern "C" {
213	#endif	294	# endif
214		295	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	296	# ifdef __cplusplus
216	# include <sys/inotify.h>	297	}
		298	# endif
217	#endif	299	#endif
218		300
219	/**/	301	/**/
		302
		303	#if EV_VERIFY >= 3
		304	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		305	#else
		306	# define EV_FREQUENT_CHECK do { } while (0)
		307	#endif
220		308
221	/*	309	/*
222	* This is used to avoid floating point rounding problems.	310	* This is used to avoid floating point rounding problems.
223	* It is added to ev_rt_now when scheduling periodics	311	* It is added to ev_rt_now when scheduling periodics
224	* to ensure progress, time-wise, even when rounding	312	* to ensure progress, time-wise, even when rounding
…		…
230		318
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	319	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	320	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */	321	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		322
235	#if __GNUC__ >= 3	323	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	324	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	325	# define noinline __attribute__ ((noinline))
238	#else	326	#else
239	# define expect(expr,value) (expr)	327	# define expect(expr,value) (expr)
240	# define noinline	328	# define noinline
241	# if __STDC_VERSION__ < 199901L	329	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	330	# define inline
243	# endif	331	# endif
244	#endif	332	#endif
245		333
246	#define expect_false(expr) expect ((expr) != 0, 0)	334	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
261		349
262	typedef ev_watcher *W;	350	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	351	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	352	typedef ev_watcher_time *WT;
265		353
		354	#define ev_active(w) ((W)(w))->active
		355	#define ev_at(w) ((WT)(w))->at
		356
		357	#if EV_USE_MONOTONIC
		358	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		359	/* giving it a reasonably high chance of working on typical architetcures */
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	360	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		361	#endif
267		362
268	#ifdef _WIN32	363	#ifdef _WIN32
269	# include "ev_win32.c"	364	# include "ev_win32.c"
270	#endif	365	#endif
271		366
…		…
292	perror (msg);	387	perror (msg);
293	abort ();	388	abort ();
294	}	389	}
295	}	390	}
296		391
		392	static void *
		393	ev_realloc_emul (void *ptr, long size)
		394	{
		395	/* some systems, notably openbsd and darwin, fail to properly
		396	* implement realloc (x, 0) (as required by both ansi c-98 and
		397	* the single unix specification, so work around them here.
		398	*/
		399
		400	if (size)
		401	return realloc (ptr, size);
		402
		403	free (ptr);
		404	return 0;
		405	}
		406
297	static void *(*alloc)(void *ptr, long size);	407	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		408
299	void	409	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	410	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	411	{
302	alloc = cb;	412	alloc = cb;
303	}	413	}
304		414
305	inline_speed void *	415	inline_speed void *
306	ev_realloc (void *ptr, long size)	416	ev_realloc (void *ptr, long size)
307	{	417	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	418	ptr = alloc (ptr, size);
309		419
310	if (!ptr && size)	420	if (!ptr && size)
311	{	421	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	422	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	423	abort ();
…		…
336	W w;	446	W w;
337	int events;	447	int events;
338	} ANPENDING;	448	} ANPENDING;
339		449
340	#if EV_USE_INOTIFY	450	#if EV_USE_INOTIFY
		451	/* hash table entry per inotify-id */
341	typedef struct	452	typedef struct
342	{	453	{
343	WL head;	454	WL head;
344	} ANFS;	455	} ANFS;
		456	#endif
		457
		458	/* Heap Entry */
		459	#if EV_HEAP_CACHE_AT
		460	typedef struct {
		461	ev_tstamp at;
		462	WT w;
		463	} ANHE;
		464
		465	#define ANHE_w(he) (he).w /* access watcher, read-write */
		466	#define ANHE_at(he) (he).at /* access cached at, read-only */
		467	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		468	#else
		469	typedef WT ANHE;
		470
		471	#define ANHE_w(he) (he)
		472	#define ANHE_at(he) (he)->at
		473	#define ANHE_at_cache(he)
345	#endif	474	#endif
346		475
347	#if EV_MULTIPLICITY	476	#if EV_MULTIPLICITY
348		477
349	struct ev_loop	478	struct ev_loop
…		…
407	{	536	{
408	return ev_rt_now;	537	return ev_rt_now;
409	}	538	}
410	#endif	539	#endif
411		540
		541	void
		542	ev_sleep (ev_tstamp delay)
		543	{
		544	if (delay > 0.)
		545	{
		546	#if EV_USE_NANOSLEEP
		547	struct timespec ts;
		548
		549	ts.tv_sec = (time_t)delay;
		550	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		551
		552	nanosleep (&ts, 0);
		553	#elif defined(_WIN32)
		554	Sleep ((unsigned long)(delay * 1e3));
		555	#else
		556	struct timeval tv;
		557
		558	tv.tv_sec = (time_t)delay;
		559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		560
		561	select (0, 0, 0, 0, &tv);
		562	#endif
		563	}
		564	}
		565
		566	/*****************************************************************************/
		567
		568	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		569
412	int inline_size	570	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	571	array_nextsize (int elem, int cur, int cnt)
414	{	572	{
415	int ncur = cur + 1;	573	int ncur = cur + 1;
416		574
417	do	575	do
418	ncur <<= 1;	576	ncur <<= 1;
419	while (cnt > ncur);	577	while (cnt > ncur);
420		578
421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	579	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422	if (elem * ncur > 4096)	580	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	581	{
424	ncur *= elem;	582	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	583	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	584	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	585	ncur /= elem;
428	}	586	}
429		587
430	return ncur;	588	return ncur;
…		…
533	{	691	{
534	int fd = fdchanges [i];	692	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	693	ANFD *anfd = anfds + fd;
536	ev_io *w;	694	ev_io *w;
537		695
538	int events = 0;	696	unsigned char events = 0;
539		697
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	698	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	699	events |= (unsigned char)w->events;
542		700
543	#if EV_SELECT_IS_WINSOCKET	701	#if EV_SELECT_IS_WINSOCKET
544	if (events)	702	if (events)
545	{	703	{
546	unsigned long argp;	704	unsigned long argp;
		705	#ifdef EV_FD_TO_WIN32_HANDLE
		706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		707	#else
547	anfd->handle = _get_osfhandle (fd);	708	anfd->handle = _get_osfhandle (fd);
		709	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	710	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	711	}
550	#endif	712	#endif
551		713
		714	{
		715	unsigned char o_events = anfd->events;
		716	unsigned char o_reify = anfd->reify;
		717
552	anfd->reify = 0;	718	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	719	anfd->events = events;
		720
		721	if (o_events != events || o_reify & EV_IOFDSET)
		722	backend_modify (EV_A_ fd, o_events, events);
		723	}
556	}	724	}
557		725
558	fdchangecnt = 0;	726	fdchangecnt = 0;
559	}	727	}
560		728
561	void inline_size	729	void inline_size
562	fd_change (EV_P_ int fd)	730	fd_change (EV_P_ int fd, int flags)
563	{	731	{
564	if (expect_false (anfds [fd].reify))	732	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	733	anfds [fd].reify |= flags;
568		734
		735	if (expect_true (!reify))
		736	{
569	++fdchangecnt;	737	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	739	fdchanges [fdchangecnt - 1] = fd;
		740	}
572	}	741	}
573		742
574	void inline_speed	743	void inline_speed
575	fd_kill (EV_P_ int fd)	744	fd_kill (EV_P_ int fd)
576	{	745	{
…		…
627		796
628	for (fd = 0; fd < anfdmax; ++fd)	797	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	798	if (anfds [fd].events)
630	{	799	{
631	anfds [fd].events = 0;	800	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	801	fd_change (EV_A_ fd, EV_IOFDSET | 1);
633	}	802	}
634	}	803	}
635		804
636	/*****************************************************************************/	805	/*****************************************************************************/
637		806
		807	/*
		808	* the heap functions want a real array index. array index 0 uis guaranteed to not
		809	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		810	* the branching factor of the d-tree.
		811	*/
		812
		813	/*
		814	* at the moment we allow libev the luxury of two heaps,
		815	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		816	* which is more cache-efficient.
		817	* the difference is about 5% with 50000+ watchers.
		818	*/
		819	#if EV_USE_4HEAP
		820
		821	#define DHEAP 4
		822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		824	#define UPHEAP_DONE(p,k) ((p) == (k))
		825
		826	/* away from the root */
638	void inline_speed	827	void inline_speed
639	upheap (WT *heap, int k)	828	downheap (ANHE *heap, int N, int k)
640	{	829	{
641	WT w = heap [k];	830	ANHE he = heap [k];
		831	ANHE *E = heap + N + HEAP0;
642		832
643	while (k)	833	for (;;)
644	{	834	{
645	int p = (k - 1) >> 1;	835	ev_tstamp minat;
		836	ANHE *minpos;
		837	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
646		838
647	if (heap [p]->at <= w->at)	839	/* find minimum child */
		840	if (expect_true (pos + DHEAP - 1 < E))
		841	{
		842	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		843	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		844	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		845	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		846	}
		847	else if (pos < E)
		848	{
		849	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		850	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		851	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		852	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		853	}
		854	else
648	break;	855	break;
649		856
		857	if (ANHE_at (he) <= minat)
		858	break;
		859
		860	heap [k] = *minpos;
		861	ev_active (ANHE_w (*minpos)) = k;
		862
		863	k = minpos - heap;
		864	}
		865
		866	heap [k] = he;
		867	ev_active (ANHE_w (he)) = k;
		868	}
		869
		870	#else /* 4HEAP */
		871
		872	#define HEAP0 1
		873	#define HPARENT(k) ((k) >> 1)
		874	#define UPHEAP_DONE(p,k) (!(p))
		875
		876	/* away from the root */
		877	void inline_speed
		878	downheap (ANHE *heap, int N, int k)
		879	{
		880	ANHE he = heap [k];
		881
		882	for (;;)
		883	{
		884	int c = k << 1;
		885
		886	if (c > N + HEAP0 - 1)
		887	break;
		888
		889	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		890	? 1 : 0;
		891
		892	if (ANHE_at (he) <= ANHE_at (heap [c]))
		893	break;
		894
		895	heap [k] = heap [c];
		896	ev_active (ANHE_w (heap [k])) = k;
		897
		898	k = c;
		899	}
		900
		901	heap [k] = he;
		902	ev_active (ANHE_w (he)) = k;
		903	}
		904	#endif
		905
		906	/* towards the root */
		907	void inline_speed
		908	upheap (ANHE *heap, int k)
		909	{
		910	ANHE he = heap [k];
		911
		912	for (;;)
		913	{
		914	int p = HPARENT (k);
		915
		916	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		917	break;
		918
650	heap [k] = heap [p];	919	heap [k] = heap [p];
651	((W)heap [k])->active = k + 1;	920	ev_active (ANHE_w (heap [k])) = k;
652	k = p;	921	k = p;
653	}	922	}
654		923
655	heap [k] = w;	924	heap [k] = he;
656	((W)heap [k])->active = k + 1;	925	ev_active (ANHE_w (he)) = k;
657
658	}
659
660	void inline_speed
661	downheap (WT *heap, int N, int k)
662	{
663	WT w = heap [k];
664
665	for (;;)
666	{
667	int c = (k << 1) + 1;
668
669	if (c >= N)
670	break;
671
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673	? 1 : 0;
674
675	if (w->at <= heap [c]->at)
676	break;
677
678	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;
680
681	k = c;
682	}
683
684	heap [k] = w;
685	((W)heap [k])->active = k + 1;
686	}	926	}
687		927
688	void inline_size	928	void inline_size
689	adjustheap (WT *heap, int N, int k)	929	adjustheap (ANHE *heap, int N, int k)
690	{	930	{
		931	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
691	upheap (heap, k);	932	upheap (heap, k);
		933	else
692	downheap (heap, N, k);	934	downheap (heap, N, k);
693	}	935	}
		936
		937	/* rebuild the heap: this function is used only once and executed rarely */
		938	void inline_size
		939	reheap (ANHE *heap, int N)
		940	{
		941	int i;
		942	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		943	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		944	for (i = 0; i < N; ++i)
		945	upheap (heap, i + HEAP0);
		946	}
		947
		948	#if EV_VERIFY
		949	static void
		950	checkheap (ANHE *heap, int N)
		951	{
		952	int i;
		953
		954	for (i = HEAP0; i < N + HEAP0; ++i)
		955	{
		956	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		957	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		958	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		959	}
		960	}
		961	#endif
694		962
695	/*****************************************************************************/	963	/*****************************************************************************/
696		964
697	typedef struct	965	typedef struct
698	{	966	{
699	WL head;	967	WL head;
700	sig_atomic_t volatile gotsig;	968	EV_ATOMIC_T gotsig;
701	} ANSIG;	969	} ANSIG;
702		970
703	static ANSIG *signals;	971	static ANSIG *signals;
704	static int signalmax;	972	static int signalmax;
705		973
706	static int sigpipe [2];	974	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		975
710	void inline_size	976	void inline_size
711	signals_init (ANSIG *base, int count)	977	signals_init (ANSIG *base, int count)
712	{	978	{
713	while (count--)	979	while (count--)
…		…
717		983
718	++base;	984	++base;
719	}	985	}
720	}	986	}
721		987
722	static void	988	/*****************************************************************************/
723	sighandler (int signum)
724	{
725	#if _WIN32
726	signal (signum, sighandler);
727	#endif
728
729	signals [signum - 1].gotsig = 1;
730
731	if (!gotsig)
732	{
733	int old_errno = errno;
734	gotsig = 1;
735	write (sigpipe [1], &signum, 1);
736	errno = old_errno;
737	}
738	}
739
740	void noinline
741	ev_feed_signal_event (EV_P_ int signum)
742	{
743	WL w;
744
745	#if EV_MULTIPLICITY
746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747	#endif
748
749	--signum;
750
751	if (signum < 0 || signum >= signalmax)
752	return;
753
754	signals [signum].gotsig = 0;
755
756	for (w = signals [signum].head; w; w = w->next)
757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758	}
759
760	static void
761	sigcb (EV_P_ ev_io *iow, int revents)
762	{
763	int signum;
764
765	read (sigpipe [0], &revents, 1);
766	gotsig = 0;
767
768	for (signum = signalmax; signum--; )
769	if (signals [signum].gotsig)
770	ev_feed_signal_event (EV_A_ signum + 1);
771	}
772		989
773	void inline_speed	990	void inline_speed
774	fd_intern (int fd)	991	fd_intern (int fd)
775	{	992	{
776	#ifdef _WIN32	993	#ifdef _WIN32
…		…
781	fcntl (fd, F_SETFL, O_NONBLOCK);	998	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	999	#endif
783	}	1000	}
784		1001
785	static void noinline	1002	static void noinline
786	siginit (EV_P)	1003	evpipe_init (EV_P)
787	{	1004	{
		1005	if (!ev_is_active (&pipeev))
		1006	{
		1007	#if EV_USE_EVENTFD
		1008	if ((evfd = eventfd (0, 0)) >= 0)
		1009	{
		1010	evpipe [0] = -1;
		1011	fd_intern (evfd);
		1012	ev_io_set (&pipeev, evfd, EV_READ);
		1013	}
		1014	else
		1015	#endif
		1016	{
		1017	while (pipe (evpipe))
		1018	syserr ("(libev) error creating signal/async pipe");
		1019
788	fd_intern (sigpipe [0]);	1020	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	1021	fd_intern (evpipe [1]);
		1022	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1023	}
790		1024
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	1025	ev_io_start (EV_A_ &pipeev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	1026	ev_unref (EV_A); /* watcher should not keep loop alive */
		1027	}
		1028	}
		1029
		1030	void inline_size
		1031	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1032	{
		1033	if (!*flag)
		1034	{
		1035	int old_errno = errno; /* save errno because write might clobber it */
		1036
		1037	*flag = 1;
		1038
		1039	#if EV_USE_EVENTFD
		1040	if (evfd >= 0)
		1041	{
		1042	uint64_t counter = 1;
		1043	write (evfd, &counter, sizeof (uint64_t));
		1044	}
		1045	else
		1046	#endif
		1047	write (evpipe [1], &old_errno, 1);
		1048
		1049	errno = old_errno;
		1050	}
		1051	}
		1052
		1053	static void
		1054	pipecb (EV_P_ ev_io *iow, int revents)
		1055	{
		1056	#if EV_USE_EVENTFD
		1057	if (evfd >= 0)
		1058	{
		1059	uint64_t counter;
		1060	read (evfd, &counter, sizeof (uint64_t));
		1061	}
		1062	else
		1063	#endif
		1064	{
		1065	char dummy;
		1066	read (evpipe [0], &dummy, 1);
		1067	}
		1068
		1069	if (gotsig && ev_is_default_loop (EV_A))
		1070	{
		1071	int signum;
		1072	gotsig = 0;
		1073
		1074	for (signum = signalmax; signum--; )
		1075	if (signals [signum].gotsig)
		1076	ev_feed_signal_event (EV_A_ signum + 1);
		1077	}
		1078
		1079	#if EV_ASYNC_ENABLE
		1080	if (gotasync)
		1081	{
		1082	int i;
		1083	gotasync = 0;
		1084
		1085	for (i = asynccnt; i--; )
		1086	if (asyncs [i]->sent)
		1087	{
		1088	asyncs [i]->sent = 0;
		1089	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1090	}
		1091	}
		1092	#endif
794	}	1093	}
795		1094
796	/*****************************************************************************/	1095	/*****************************************************************************/
797		1096
		1097	static void
		1098	ev_sighandler (int signum)
		1099	{
		1100	#if EV_MULTIPLICITY
		1101	struct ev_loop *loop = &default_loop_struct;
		1102	#endif
		1103
		1104	#if _WIN32
		1105	signal (signum, ev_sighandler);
		1106	#endif
		1107
		1108	signals [signum - 1].gotsig = 1;
		1109	evpipe_write (EV_A_ &gotsig);
		1110	}
		1111
		1112	void noinline
		1113	ev_feed_signal_event (EV_P_ int signum)
		1114	{
		1115	WL w;
		1116
		1117	#if EV_MULTIPLICITY
		1118	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1119	#endif
		1120
		1121	--signum;
		1122
		1123	if (signum < 0 || signum >= signalmax)
		1124	return;
		1125
		1126	signals [signum].gotsig = 0;
		1127
		1128	for (w = signals [signum].head; w; w = w->next)
		1129	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1130	}
		1131
		1132	/*****************************************************************************/
		1133
798	static ev_child *childs [EV_PID_HASHSIZE];	1134	static WL childs [EV_PID_HASHSIZE];
799		1135
800	#ifndef _WIN32	1136	#ifndef _WIN32
801		1137
802	static ev_signal childev;	1138	static ev_signal childev;
803		1139
		1140	#ifndef WIFCONTINUED
		1141	# define WIFCONTINUED(status) 0
		1142	#endif
		1143
804	void inline_speed	1144	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1145	child_reap (EV_P_ int chain, int pid, int status)
806	{	1146	{
807	ev_child *w;	1147	ev_child *w;
		1148	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1149
809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1150	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1151	{
810	if (w->pid == pid || !w->pid)	1152	if ((w->pid == pid || !w->pid)
		1153	&& (!traced || (w->flags & 1)))
811	{	1154	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1155	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
813	w->rpid = pid;	1156	w->rpid = pid;
814	w->rstatus = status;	1157	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1158	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1159	}
		1160	}
817	}	1161	}
818		1162
819	#ifndef WCONTINUED	1163	#ifndef WCONTINUED
820	# define WCONTINUED 0	1164	# define WCONTINUED 0
821	#endif	1165	#endif
…		…
830	if (!WCONTINUED	1174	if (!WCONTINUED
831	|| errno != EINVAL	1175	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1176	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1177	return;
834		1178
835	/* make sure we are called again until all childs have been reaped */	1179	/* make sure we are called again until all children have been reaped */
836	/* we need to do it this way so that the callback gets called before we continue */	1180	/* we need to do it this way so that the callback gets called before we continue */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1181	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1182
839	child_reap (EV_A_ sw, pid, pid, status);	1183	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1184	if (EV_PID_HASHSIZE > 1)
841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1185	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1186	}
843		1187
844	#endif	1188	#endif
845		1189
846	/*****************************************************************************/	1190	/*****************************************************************************/
…		…
918	}	1262	}
919		1263
920	unsigned int	1264	unsigned int
921	ev_embeddable_backends (void)	1265	ev_embeddable_backends (void)
922	{	1266	{
923	return EVBACKEND_EPOLL	1267	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1268
925	| EVBACKEND_PORT;	1269	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1270	/* please fix it and tell me how to detect the fix */
		1271	flags &= ~EVBACKEND_EPOLL;
		1272
		1273	return flags;
926	}	1274	}
927		1275
928	unsigned int	1276	unsigned int
929	ev_backend (EV_P)	1277	ev_backend (EV_P)
930	{	1278	{
…		…
933		1281
934	unsigned int	1282	unsigned int
935	ev_loop_count (EV_P)	1283	ev_loop_count (EV_P)
936	{	1284	{
937	return loop_count;	1285	return loop_count;
		1286	}
		1287
		1288	void
		1289	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1290	{
		1291	io_blocktime = interval;
		1292	}
		1293
		1294	void
		1295	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1296	{
		1297	timeout_blocktime = interval;
938	}	1298	}
939		1299
940	static void noinline	1300	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1301	loop_init (EV_P_ unsigned int flags)
942	{	1302	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1308	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1309	have_monotonic = 1;
950	}	1310	}
951	#endif	1311	#endif
952		1312
953	ev_rt_now = ev_time ();	1313	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1314	mn_now = get_clock ();
955	now_floor = mn_now;	1315	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1316	rtmn_diff = ev_rt_now - mn_now;
		1317
		1318	io_blocktime = 0.;
		1319	timeout_blocktime = 0.;
		1320	backend = 0;
		1321	backend_fd = -1;
		1322	gotasync = 0;
		1323	#if EV_USE_INOTIFY
		1324	fs_fd = -2;
		1325	#endif
957		1326
958	/* pid check not overridable via env */	1327	/* pid check not overridable via env */
959	#ifndef _WIN32	1328	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1329	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1330	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1333	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1334	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1335	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1336	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1337
969	if (!(flags & 0x0000ffffUL))	1338	if (!(flags & 0x0000ffffU))
970	flags |= ev_recommended_backends ();	1339	flags |= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1340
978	#if EV_USE_PORT	1341	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1342	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1343	#endif
981	#if EV_USE_KQUEUE	1344	#if EV_USE_KQUEUE
…		…
989	#endif	1352	#endif
990	#if EV_USE_SELECT	1353	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1354	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1355	#endif
993		1356
994	ev_init (&sigev, sigcb);	1357	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1358	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1359	}
997	}	1360	}
998		1361
999	static void noinline	1362	static void noinline
1000	loop_destroy (EV_P)	1363	loop_destroy (EV_P)
1001	{	1364	{
1002	int i;	1365	int i;
		1366
		1367	if (ev_is_active (&pipeev))
		1368	{
		1369	ev_ref (EV_A); /* signal watcher */
		1370	ev_io_stop (EV_A_ &pipeev);
		1371
		1372	#if EV_USE_EVENTFD
		1373	if (evfd >= 0)
		1374	close (evfd);
		1375	#endif
		1376
		1377	if (evpipe [0] >= 0)
		1378	{
		1379	close (evpipe [0]);
		1380	close (evpipe [1]);
		1381	}
		1382	}
1003		1383
1004	#if EV_USE_INOTIFY	1384	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1385	if (fs_fd >= 0)
1006	close (fs_fd);	1386	close (fs_fd);
1007	#endif	1387	#endif
…		…
1030	array_free (pending, [i]);	1410	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1411	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1412	array_free (idle, [i]);
1033	#endif	1413	#endif
1034	}	1414	}
		1415
		1416	ev_free (anfds); anfdmax = 0;
1035		1417
1036	/* have to use the microsoft-never-gets-it-right macro */	1418	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1419	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1420	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1421	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1422	array_free (periodic, EMPTY);
1041	#endif	1423	#endif
		1424	#if EV_FORK_ENABLE
		1425	array_free (fork, EMPTY);
		1426	#endif
1042	array_free (prepare, EMPTY);	1427	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1428	array_free (check, EMPTY);
		1429	#if EV_ASYNC_ENABLE
		1430	array_free (async, EMPTY);
		1431	#endif
1044		1432
1045	backend = 0;	1433	backend = 0;
1046	}	1434	}
1047		1435
		1436	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	1437	void inline_size infy_fork (EV_P);
		1438	#endif
1049		1439
1050	void inline_size	1440	void inline_size
1051	loop_fork (EV_P)	1441	loop_fork (EV_P)
1052	{	1442	{
1053	#if EV_USE_PORT	1443	#if EV_USE_PORT
…		…
1061	#endif	1451	#endif
1062	#if EV_USE_INOTIFY	1452	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1453	infy_fork (EV_A);
1064	#endif	1454	#endif
1065		1455
1066	if (ev_is_active (&sigev))	1456	if (ev_is_active (&pipeev))
1067	{	1457	{
1068	/* default loop */	1458	/* this "locks" the handlers against writing to the pipe */
		1459	/* while we modify the fd vars */
		1460	gotsig = 1;
		1461	#if EV_ASYNC_ENABLE
		1462	gotasync = 1;
		1463	#endif
1069		1464
1070	ev_ref (EV_A);	1465	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1466	ev_io_stop (EV_A_ &pipeev);
		1467
		1468	#if EV_USE_EVENTFD
		1469	if (evfd >= 0)
		1470	close (evfd);
		1471	#endif
		1472
		1473	if (evpipe [0] >= 0)
		1474	{
1072	close (sigpipe [0]);	1475	close (evpipe [0]);
1073	close (sigpipe [1]);	1476	close (evpipe [1]);
		1477	}
1074		1478
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1479	evpipe_init (EV_A);
		1480	/* now iterate over everything, in case we missed something */
		1481	pipecb (EV_A_ &pipeev, EV_READ);
1079	}	1482	}
1080		1483
1081	postfork = 0;	1484	postfork = 0;
1082	}	1485	}
1083		1486
1084	#if EV_MULTIPLICITY	1487	#if EV_MULTIPLICITY
		1488
1085	struct ev_loop *	1489	struct ev_loop *
1086	ev_loop_new (unsigned int flags)	1490	ev_loop_new (unsigned int flags)
1087	{	1491	{
1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1492	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089		1493
…		…
1105	}	1509	}
1106		1510
1107	void	1511	void
1108	ev_loop_fork (EV_P)	1512	ev_loop_fork (EV_P)
1109	{	1513	{
1110	postfork = 1;	1514	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1515	}
1112		1516
		1517	#if EV_VERIFY
		1518	static void
		1519	array_check (W **ws, int cnt)
		1520	{
		1521	while (cnt--)
		1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1523	}
1113	#endif	1524	#endif
		1525
		1526	void
		1527	ev_loop_verify (EV_P)
		1528	{
		1529	#if EV_VERIFY
		1530	int i;
		1531
		1532	checkheap (timers, timercnt);
		1533	#if EV_PERIODIC_ENABLE
		1534	checkheap (periodics, periodiccnt);
		1535	#endif
		1536
		1537	#if EV_IDLE_ENABLE
		1538	for (i = NUMPRI; i--; )
		1539	array_check ((W **)idles [i], idlecnt [i]);
		1540	#endif
		1541	#if EV_FORK_ENABLE
		1542	array_check ((W **)forks, forkcnt);
		1543	#endif
		1544	#if EV_ASYNC_ENABLE
		1545	array_check ((W **)asyncs, asynccnt);
		1546	#endif
		1547	array_check ((W **)prepares, preparecnt);
		1548	array_check ((W **)checks, checkcnt);
		1549	#endif
		1550	}
		1551
		1552	#endif /* multiplicity */
1114		1553
1115	#if EV_MULTIPLICITY	1554	#if EV_MULTIPLICITY
1116	struct ev_loop *	1555	struct ev_loop *
1117	ev_default_loop_init (unsigned int flags)	1556	ev_default_loop_init (unsigned int flags)
1118	#else	1557	#else
1119	int	1558	int
1120	ev_default_loop (unsigned int flags)	1559	ev_default_loop (unsigned int flags)
1121	#endif	1560	#endif
1122	{	1561	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1562	if (!ev_default_loop_ptr)
1128	{	1563	{
1129	#if EV_MULTIPLICITY	1564	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1565	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1566	#else
…		…
1134		1569
1135	loop_init (EV_A_ flags);	1570	loop_init (EV_A_ flags);
1136		1571
1137	if (ev_backend (EV_A))	1572	if (ev_backend (EV_A))
1138	{	1573	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1574	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1575	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1576	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1577	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1578	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1595	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1596	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1597	ev_signal_stop (EV_A_ &childev);
1165	#endif	1598	#endif
1166		1599
1167	ev_ref (EV_A); /* signal watcher */
1168	ev_io_stop (EV_A_ &sigev);
1169
1170	close (sigpipe [0]); sigpipe [0] = 0;
1171	close (sigpipe [1]); sigpipe [1] = 0;
1172
1173	loop_destroy (EV_A);	1600	loop_destroy (EV_A);
1174	}	1601	}
1175		1602
1176	void	1603	void
1177	ev_default_fork (void)	1604	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1606	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1607	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1608	#endif
1182		1609
1183	if (backend)	1610	if (backend)
1184	postfork = 1;	1611	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1612	}
1186		1613
1187	/*****************************************************************************/	1614	/*****************************************************************************/
1188		1615
1189	void	1616	void
…		…
1206	{	1633	{
1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1208		1635
1209	p->w->pending = 0;	1636	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	1637	EV_CB_INVOKE (p->w, p->events);
		1638	EV_FREQUENT_CHECK;
1211	}	1639	}
1212	}	1640	}
1213	}	1641	}
1214
1215	void inline_size
1216	timers_reify (EV_P)
1217	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{
1220	ev_timer *w = timers [0];
1221
1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1223
1224	/* first reschedule or stop timer */
1225	if (w->repeat)
1226	{
1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
1229	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;
1232
1233	downheap ((WT *)timers, timercnt, 0);
1234	}
1235	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1239	}
1240	}
1241
1242	#if EV_PERIODIC_ENABLE
1243	void inline_size
1244	periodics_reify (EV_P)
1245	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{
1248	ev_periodic *w = periodics [0];
1249
1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1251
1252	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)
1254	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap ((WT *)periodics, periodiccnt, 0);
1258	}
1259	else if (w->interval)
1260	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264	downheap ((WT *)periodics, periodiccnt, 0);
1265	}
1266	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1270	}
1271	}
1272
1273	static void noinline
1274	periodics_reschedule (EV_P)
1275	{
1276	int i;
1277
1278	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)
1280	{
1281	ev_periodic *w = periodics [i];
1282
1283	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}
1288
1289	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )
1291	downheap ((WT *)periodics, periodiccnt, i);
1292	}
1293	#endif
1294		1642
1295	#if EV_IDLE_ENABLE	1643	#if EV_IDLE_ENABLE
1296	void inline_size	1644	void inline_size
1297	idle_reify (EV_P)	1645	idle_reify (EV_P)
1298	{	1646	{
…		…
1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1658	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311	break;	1659	break;
1312	}	1660	}
1313	}	1661	}
1314	}	1662	}
		1663	}
		1664	#endif
		1665
		1666	void inline_size
		1667	timers_reify (EV_P)
		1668	{
		1669	EV_FREQUENT_CHECK;
		1670
		1671	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1672	{
		1673	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1674
		1675	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1676
		1677	/* first reschedule or stop timer */
		1678	if (w->repeat)
		1679	{
		1680	ev_at (w) += w->repeat;
		1681	if (ev_at (w) < mn_now)
		1682	ev_at (w) = mn_now;
		1683
		1684	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1685
		1686	ANHE_at_cache (timers [HEAP0]);
		1687	downheap (timers, timercnt, HEAP0);
		1688	}
		1689	else
		1690	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1691
		1692	EV_FREQUENT_CHECK;
		1693	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1694	}
		1695	}
		1696
		1697	#if EV_PERIODIC_ENABLE
		1698	void inline_size
		1699	periodics_reify (EV_P)
		1700	{
		1701	EV_FREQUENT_CHECK;
		1702
		1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1704	{
		1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1706
		1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1708
		1709	/* first reschedule or stop timer */
		1710	if (w->reschedule_cb)
		1711	{
		1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1713
		1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1715
		1716	ANHE_at_cache (periodics [HEAP0]);
		1717	downheap (periodics, periodiccnt, HEAP0);
		1718	}
		1719	else if (w->interval)
		1720	{
		1721	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1722	/* if next trigger time is not sufficiently in the future, put it there */
		1723	/* this might happen because of floating point inexactness */
		1724	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1725	{
		1726	ev_at (w) += w->interval;
		1727
		1728	/* if interval is unreasonably low we might still have a time in the past */
		1729	/* so correct this. this will make the periodic very inexact, but the user */
		1730	/* has effectively asked to get triggered more often than possible */
		1731	if (ev_at (w) < ev_rt_now)
		1732	ev_at (w) = ev_rt_now;
		1733	}
		1734
		1735	ANHE_at_cache (periodics [HEAP0]);
		1736	downheap (periodics, periodiccnt, HEAP0);
		1737	}
		1738	else
		1739	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1740
		1741	EV_FREQUENT_CHECK;
		1742	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1743	}
		1744	}
		1745
		1746	static void noinline
		1747	periodics_reschedule (EV_P)
		1748	{
		1749	int i;
		1750
		1751	/* adjust periodics after time jump */
		1752	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1753	{
		1754	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1755
		1756	if (w->reschedule_cb)
		1757	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1758	else if (w->interval)
		1759	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1760
		1761	ANHE_at_cache (periodics [i]);
		1762	}
		1763
		1764	reheap (periodics, periodiccnt);
1315	}	1765	}
1316	#endif	1766	#endif
1317		1767
1318	void inline_speed	1768	void inline_speed
1319	time_update (EV_P_ ev_tstamp max_block)	1769	time_update (EV_P_ ev_tstamp max_block)
…		…
1348	*/	1798	*/
1349	for (i = 4; --i; )	1799	for (i = 4; --i; )
1350	{	1800	{
1351	rtmn_diff = ev_rt_now - mn_now;	1801	rtmn_diff = ev_rt_now - mn_now;
1352		1802
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1803	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	1804	return; /* all is well */
1355		1805
1356	ev_rt_now = ev_time ();	1806	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	1807	mn_now = get_clock ();
1358	now_floor = mn_now;	1808	now_floor = mn_now;
…		…
1374	#if EV_PERIODIC_ENABLE	1824	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	1825	periodics_reschedule (EV_A);
1376	#endif	1826	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */	1827	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)	1828	for (i = 0; i < timercnt; ++i)
		1829	{
		1830	ANHE *he = timers + i + HEAP0;
1379	((WT)timers [i])->at += ev_rt_now - mn_now;	1831	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1832	ANHE_at_cache (*he);
		1833	}
1380	}	1834	}
1381		1835
1382	mn_now = ev_rt_now;	1836	mn_now = ev_rt_now;
1383	}	1837	}
1384	}	1838	}
…		…
1398	static int loop_done;	1852	static int loop_done;
1399		1853
1400	void	1854	void
1401	ev_loop (EV_P_ int flags)	1855	ev_loop (EV_P_ int flags)
1402	{	1856	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1857	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1858
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1859	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1860
1409	do	1861	do
1410	{	1862	{
		1863	#if EV_VERIFY >= 2
		1864	ev_loop_verify (EV_A);
		1865	#endif
		1866
1411	#ifndef _WIN32	1867	#ifndef _WIN32
1412	if (expect_false (curpid)) /* penalise the forking check even more */	1868	if (expect_false (curpid)) /* penalise the forking check even more */
1413	if (expect_false (getpid () != curpid))	1869	if (expect_false (getpid () != curpid))
1414	{	1870	{
1415	curpid = getpid ();	1871	curpid = getpid ();
…		…
1444	/* update fd-related kernel structures */	1900	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1901	fd_reify (EV_A);
1446		1902
1447	/* calculate blocking time */	1903	/* calculate blocking time */
1448	{	1904	{
1449	ev_tstamp block;	1905	ev_tstamp waittime = 0.;
		1906	ev_tstamp sleeptime = 0.;
1450		1907
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1908	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1909	{
1455	/* update time to cancel out callback processing overhead */	1910	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1911	time_update (EV_A_ 1e100);
1457		1912
1458	block = MAX_BLOCKTIME;	1913	waittime = MAX_BLOCKTIME;
1459		1914
1460	if (timercnt)	1915	if (timercnt)
1461	{	1916	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1917	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463	if (block > to) block = to;	1918	if (waittime > to) waittime = to;
1464	}	1919	}
1465		1920
1466	#if EV_PERIODIC_ENABLE	1921	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1922	if (periodiccnt)
1468	{	1923	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1924	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	1925	if (waittime > to) waittime = to;
1471	}	1926	}
1472	#endif	1927	#endif
1473		1928
1474	if (expect_false (block < 0.)) block = 0.;	1929	if (expect_false (waittime < timeout_blocktime))
		1930	waittime = timeout_blocktime;
		1931
		1932	sleeptime = waittime - backend_fudge;
		1933
		1934	if (expect_true (sleeptime > io_blocktime))
		1935	sleeptime = io_blocktime;
		1936
		1937	if (sleeptime)
		1938	{
		1939	ev_sleep (sleeptime);
		1940	waittime -= sleeptime;
		1941	}
1475	}	1942	}
1476		1943
1477	++loop_count;	1944	++loop_count;
1478	backend_poll (EV_A_ block);	1945	backend_poll (EV_A_ waittime);
1479		1946
1480	/* update ev_rt_now, do magic */	1947	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	1948	time_update (EV_A_ waittime + sleeptime);
1482	}	1949	}
1483		1950
1484	/* queue pending timers and reschedule them */	1951	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	1952	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	1953	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	1962	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	1963	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1964	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		1965
1499	call_pending (EV_A);	1966	call_pending (EV_A);
1500
1501	}	1967	}
1502	while (expect_true (activecnt && !loop_done));	1968	while (expect_true (
		1969	activecnt
		1970	&& !loop_done
		1971	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1972	));
1503		1973
1504	if (loop_done == EVUNLOOP_ONE)	1974	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	1975	loop_done = EVUNLOOP_CANCEL;
1506	}	1976	}
1507		1977
…		…
1596	if (expect_false (ev_is_active (w)))	2066	if (expect_false (ev_is_active (w)))
1597	return;	2067	return;
1598		2068
1599	assert (("ev_io_start called with negative fd", fd >= 0));	2069	assert (("ev_io_start called with negative fd", fd >= 0));
1600		2070
		2071	EV_FREQUENT_CHECK;
		2072
1601	ev_start (EV_A_ (W)w, 1);	2073	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2074	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2075	wlist_add (&anfds[fd].head, (WL)w);
1604		2076
1605	fd_change (EV_A_ fd);	2077	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		2078	w->events &= ~EV_IOFDSET;
		2079
		2080	EV_FREQUENT_CHECK;
1606	}	2081	}
1607		2082
1608	void noinline	2083	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	2084	ev_io_stop (EV_P_ ev_io *w)
1610	{	2085	{
1611	clear_pending (EV_A_ (W)w);	2086	clear_pending (EV_A_ (W)w);
1612	if (expect_false (!ev_is_active (w)))	2087	if (expect_false (!ev_is_active (w)))
1613	return;	2088	return;
1614		2089
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2090	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		2091
		2092	EV_FREQUENT_CHECK;
		2093
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2094	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	2095	ev_stop (EV_A_ (W)w);
1619		2096
1620	fd_change (EV_A_ w->fd);	2097	fd_change (EV_A_ w->fd, 1);
		2098
		2099	EV_FREQUENT_CHECK;
1621	}	2100	}
1622		2101
1623	void noinline	2102	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	2103	ev_timer_start (EV_P_ ev_timer *w)
1625	{	2104	{
1626	if (expect_false (ev_is_active (w)))	2105	if (expect_false (ev_is_active (w)))
1627	return;	2106	return;
1628		2107
1629	((WT)w)->at += mn_now;	2108	ev_at (w) += mn_now;
1630		2109
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2110	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		2111
		2112	EV_FREQUENT_CHECK;
		2113
		2114	++timercnt;
1633	ev_start (EV_A_ (W)w, ++timercnt);	2115	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2116	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1635	timers [timercnt - 1] = w;	2117	ANHE_w (timers [ev_active (w)]) = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	2118	ANHE_at_cache (timers [ev_active (w)]);
		2119	upheap (timers, ev_active (w));
1637		2120
		2121	EV_FREQUENT_CHECK;
		2122
1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2123	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1639	}	2124	}
1640		2125
1641	void noinline	2126	void noinline
1642	ev_timer_stop (EV_P_ ev_timer *w)	2127	ev_timer_stop (EV_P_ ev_timer *w)
1643	{	2128	{
1644	clear_pending (EV_A_ (W)w);	2129	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	2130	if (expect_false (!ev_is_active (w)))
1646	return;	2131	return;
1647		2132
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2133	EV_FREQUENT_CHECK;
1649		2134
1650	{	2135	{
1651	int active = ((W)w)->active;	2136	int active = ev_active (w);
1652		2137
		2138	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2139
		2140	--timercnt;
		2141
1653	if (expect_true (--active < --timercnt))	2142	if (expect_true (active < timercnt + HEAP0))
1654	{	2143	{
1655	timers [active] = timers [timercnt];	2144	timers [active] = timers [timercnt + HEAP0];
1656	adjustheap ((WT *)timers, timercnt, active);	2145	adjustheap (timers, timercnt, active);
1657	}	2146	}
1658	}	2147	}
1659		2148
1660	((WT)w)->at -= mn_now;	2149	EV_FREQUENT_CHECK;
		2150
		2151	ev_at (w) -= mn_now;
1661		2152
1662	ev_stop (EV_A_ (W)w);	2153	ev_stop (EV_A_ (W)w);
1663	}	2154	}
1664		2155
1665	void noinline	2156	void noinline
1666	ev_timer_again (EV_P_ ev_timer *w)	2157	ev_timer_again (EV_P_ ev_timer *w)
1667	{	2158	{
		2159	EV_FREQUENT_CHECK;
		2160
1668	if (ev_is_active (w))	2161	if (ev_is_active (w))
1669	{	2162	{
1670	if (w->repeat)	2163	if (w->repeat)
1671	{	2164	{
1672	((WT)w)->at = mn_now + w->repeat;	2165	ev_at (w) = mn_now + w->repeat;
		2166	ANHE_at_cache (timers [ev_active (w)]);
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2167	adjustheap (timers, timercnt, ev_active (w));
1674	}	2168	}
1675	else	2169	else
1676	ev_timer_stop (EV_A_ w);	2170	ev_timer_stop (EV_A_ w);
1677	}	2171	}
1678	else if (w->repeat)	2172	else if (w->repeat)
1679	{	2173	{
1680	w->at = w->repeat;	2174	ev_at (w) = w->repeat;
1681	ev_timer_start (EV_A_ w);	2175	ev_timer_start (EV_A_ w);
1682	}	2176	}
		2177
		2178	EV_FREQUENT_CHECK;
1683	}	2179	}
1684		2180
1685	#if EV_PERIODIC_ENABLE	2181	#if EV_PERIODIC_ENABLE
1686	void noinline	2182	void noinline
1687	ev_periodic_start (EV_P_ ev_periodic *w)	2183	ev_periodic_start (EV_P_ ev_periodic *w)
1688	{	2184	{
1689	if (expect_false (ev_is_active (w)))	2185	if (expect_false (ev_is_active (w)))
1690	return;	2186	return;
1691		2187
1692	if (w->reschedule_cb)	2188	if (w->reschedule_cb)
1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2189	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1694	else if (w->interval)	2190	else if (w->interval)
1695	{	2191	{
1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2192	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1697	/* this formula differs from the one in periodic_reify because we do not always round up */	2193	/* this formula differs from the one in periodic_reify because we do not always round up */
1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2194	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699	}	2195	}
1700	else	2196	else
1701	((WT)w)->at = w->offset;	2197	ev_at (w) = w->offset;
1702		2198
		2199	EV_FREQUENT_CHECK;
		2200
		2201	++periodiccnt;
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	2202	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2203	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	2204	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	2205	ANHE_at_cache (periodics [ev_active (w)]);
		2206	upheap (periodics, ev_active (w));
1707		2207
		2208	EV_FREQUENT_CHECK;
		2209
1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2210	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1709	}	2211	}
1710		2212
1711	void noinline	2213	void noinline
1712	ev_periodic_stop (EV_P_ ev_periodic *w)	2214	ev_periodic_stop (EV_P_ ev_periodic *w)
1713	{	2215	{
1714	clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
1716	return;	2218	return;
1717		2219
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2220	EV_FREQUENT_CHECK;
1719		2221
1720	{	2222	{
1721	int active = ((W)w)->active;	2223	int active = ev_active (w);
1722		2224
		2225	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2226
		2227	--periodiccnt;
		2228
1723	if (expect_true (--active < --periodiccnt))	2229	if (expect_true (active < periodiccnt + HEAP0))
1724	{	2230	{
1725	periodics [active] = periodics [periodiccnt];	2231	periodics [active] = periodics [periodiccnt + HEAP0];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	2232	adjustheap (periodics, periodiccnt, active);
1727	}	2233	}
1728	}	2234	}
		2235
		2236	EV_FREQUENT_CHECK;
1729		2237
1730	ev_stop (EV_A_ (W)w);	2238	ev_stop (EV_A_ (W)w);
1731	}	2239	}
1732		2240
1733	void noinline	2241	void noinline
…		…
1751	#endif	2259	#endif
1752	if (expect_false (ev_is_active (w)))	2260	if (expect_false (ev_is_active (w)))
1753	return;	2261	return;
1754		2262
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2263	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2264
		2265	evpipe_init (EV_A);
		2266
		2267	EV_FREQUENT_CHECK;
1756		2268
1757	{	2269	{
1758	#ifndef _WIN32	2270	#ifndef _WIN32
1759	sigset_t full, prev;	2271	sigset_t full, prev;
1760	sigfillset (&full);	2272	sigfillset (&full);
…		…
1767	sigprocmask (SIG_SETMASK, &prev, 0);	2279	sigprocmask (SIG_SETMASK, &prev, 0);
1768	#endif	2280	#endif
1769	}	2281	}
1770		2282
1771	ev_start (EV_A_ (W)w, 1);	2283	ev_start (EV_A_ (W)w, 1);
1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2284	wlist_add (&signals [w->signum - 1].head, (WL)w);
1773		2285
1774	if (!((WL)w)->next)	2286	if (!((WL)w)->next)
1775	{	2287	{
1776	#if _WIN32	2288	#if _WIN32
1777	signal (w->signum, sighandler);	2289	signal (w->signum, ev_sighandler);
1778	#else	2290	#else
1779	struct sigaction sa;	2291	struct sigaction sa;
1780	sa.sa_handler = sighandler;	2292	sa.sa_handler = ev_sighandler;
1781	sigfillset (&sa.sa_mask);	2293	sigfillset (&sa.sa_mask);
1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2294	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1783	sigaction (w->signum, &sa, 0);	2295	sigaction (w->signum, &sa, 0);
1784	#endif	2296	#endif
1785	}	2297	}
		2298
		2299	EV_FREQUENT_CHECK;
1786	}	2300	}
1787		2301
1788	void noinline	2302	void noinline
1789	ev_signal_stop (EV_P_ ev_signal *w)	2303	ev_signal_stop (EV_P_ ev_signal *w)
1790	{	2304	{
1791	clear_pending (EV_A_ (W)w);	2305	clear_pending (EV_A_ (W)w);
1792	if (expect_false (!ev_is_active (w)))	2306	if (expect_false (!ev_is_active (w)))
1793	return;	2307	return;
1794		2308
		2309	EV_FREQUENT_CHECK;
		2310
1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2311	wlist_del (&signals [w->signum - 1].head, (WL)w);
1796	ev_stop (EV_A_ (W)w);	2312	ev_stop (EV_A_ (W)w);
1797		2313
1798	if (!signals [w->signum - 1].head)	2314	if (!signals [w->signum - 1].head)
1799	signal (w->signum, SIG_DFL);	2315	signal (w->signum, SIG_DFL);
		2316
		2317	EV_FREQUENT_CHECK;
1800	}	2318	}
1801		2319
1802	void	2320	void
1803	ev_child_start (EV_P_ ev_child *w)	2321	ev_child_start (EV_P_ ev_child *w)
1804	{	2322	{
…		…
1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2324	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1807	#endif	2325	#endif
1808	if (expect_false (ev_is_active (w)))	2326	if (expect_false (ev_is_active (w)))
1809	return;	2327	return;
1810		2328
		2329	EV_FREQUENT_CHECK;
		2330
1811	ev_start (EV_A_ (W)w, 1);	2331	ev_start (EV_A_ (W)w, 1);
1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2332	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2333
		2334	EV_FREQUENT_CHECK;
1813	}	2335	}
1814		2336
1815	void	2337	void
1816	ev_child_stop (EV_P_ ev_child *w)	2338	ev_child_stop (EV_P_ ev_child *w)
1817	{	2339	{
1818	clear_pending (EV_A_ (W)w);	2340	clear_pending (EV_A_ (W)w);
1819	if (expect_false (!ev_is_active (w)))	2341	if (expect_false (!ev_is_active (w)))
1820	return;	2342	return;
1821		2343
		2344	EV_FREQUENT_CHECK;
		2345
1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2346	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823	ev_stop (EV_A_ (W)w);	2347	ev_stop (EV_A_ (W)w);
		2348
		2349	EV_FREQUENT_CHECK;
1824	}	2350	}
1825		2351
1826	#if EV_STAT_ENABLE	2352	#if EV_STAT_ENABLE
1827		2353
1828	# ifdef _WIN32	2354	# ifdef _WIN32
…		…
1846	if (w->wd < 0)	2372	if (w->wd < 0)
1847	{	2373	{
1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2374	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1849		2375
1850	/* monitor some parent directory for speedup hints */	2376	/* monitor some parent directory for speedup hints */
		2377	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2378	/* but an efficiency issue only */
1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2379	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1852	{	2380	{
1853	char path [4096];	2381	char path [4096];
1854	strcpy (path, w->path);	2382	strcpy (path, w->path);
1855		2383
…		…
2054	else	2582	else
2055	#endif	2583	#endif
2056	ev_timer_start (EV_A_ &w->timer);	2584	ev_timer_start (EV_A_ &w->timer);
2057		2585
2058	ev_start (EV_A_ (W)w, 1);	2586	ev_start (EV_A_ (W)w, 1);
		2587
		2588	EV_FREQUENT_CHECK;
2059	}	2589	}
2060		2590
2061	void	2591	void
2062	ev_stat_stop (EV_P_ ev_stat *w)	2592	ev_stat_stop (EV_P_ ev_stat *w)
2063	{	2593	{
2064	clear_pending (EV_A_ (W)w);	2594	clear_pending (EV_A_ (W)w);
2065	if (expect_false (!ev_is_active (w)))	2595	if (expect_false (!ev_is_active (w)))
2066	return;	2596	return;
2067		2597
		2598	EV_FREQUENT_CHECK;
		2599
2068	#if EV_USE_INOTIFY	2600	#if EV_USE_INOTIFY
2069	infy_del (EV_A_ w);	2601	infy_del (EV_A_ w);
2070	#endif	2602	#endif
2071	ev_timer_stop (EV_A_ &w->timer);	2603	ev_timer_stop (EV_A_ &w->timer);
2072		2604
2073	ev_stop (EV_A_ (W)w);	2605	ev_stop (EV_A_ (W)w);
		2606
		2607	EV_FREQUENT_CHECK;
2074	}	2608	}
2075	#endif	2609	#endif
2076		2610
2077	#if EV_IDLE_ENABLE	2611	#if EV_IDLE_ENABLE
2078	void	2612	void
…		…
2080	{	2614	{
2081	if (expect_false (ev_is_active (w)))	2615	if (expect_false (ev_is_active (w)))
2082	return;	2616	return;
2083		2617
2084	pri_adjust (EV_A_ (W)w);	2618	pri_adjust (EV_A_ (W)w);
		2619
		2620	EV_FREQUENT_CHECK;
2085		2621
2086	{	2622	{
2087	int active = ++idlecnt [ABSPRI (w)];	2623	int active = ++idlecnt [ABSPRI (w)];
2088		2624
2089	++idleall;	2625	++idleall;
2090	ev_start (EV_A_ (W)w, active);	2626	ev_start (EV_A_ (W)w, active);
2091		2627
2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2628	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2093	idles [ABSPRI (w)][active - 1] = w;	2629	idles [ABSPRI (w)][active - 1] = w;
2094	}	2630	}
		2631
		2632	EV_FREQUENT_CHECK;
2095	}	2633	}
2096		2634
2097	void	2635	void
2098	ev_idle_stop (EV_P_ ev_idle *w)	2636	ev_idle_stop (EV_P_ ev_idle *w)
2099	{	2637	{
2100	clear_pending (EV_A_ (W)w);	2638	clear_pending (EV_A_ (W)w);
2101	if (expect_false (!ev_is_active (w)))	2639	if (expect_false (!ev_is_active (w)))
2102	return;	2640	return;
2103		2641
		2642	EV_FREQUENT_CHECK;
		2643
2104	{	2644	{
2105	int active = ((W)w)->active;	2645	int active = ev_active (w);
2106		2646
2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2647	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2108	((W)idles [ABSPRI (w)][active - 1])->active = active;	2648	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2109		2649
2110	ev_stop (EV_A_ (W)w);	2650	ev_stop (EV_A_ (W)w);
2111	--idleall;	2651	--idleall;
2112	}	2652	}
		2653
		2654	EV_FREQUENT_CHECK;
2113	}	2655	}
2114	#endif	2656	#endif
2115		2657
2116	void	2658	void
2117	ev_prepare_start (EV_P_ ev_prepare *w)	2659	ev_prepare_start (EV_P_ ev_prepare *w)
2118	{	2660	{
2119	if (expect_false (ev_is_active (w)))	2661	if (expect_false (ev_is_active (w)))
2120	return;	2662	return;
		2663
		2664	EV_FREQUENT_CHECK;
2121		2665
2122	ev_start (EV_A_ (W)w, ++preparecnt);	2666	ev_start (EV_A_ (W)w, ++preparecnt);
2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2667	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2124	prepares [preparecnt - 1] = w;	2668	prepares [preparecnt - 1] = w;
		2669
		2670	EV_FREQUENT_CHECK;
2125	}	2671	}
2126		2672
2127	void	2673	void
2128	ev_prepare_stop (EV_P_ ev_prepare *w)	2674	ev_prepare_stop (EV_P_ ev_prepare *w)
2129	{	2675	{
2130	clear_pending (EV_A_ (W)w);	2676	clear_pending (EV_A_ (W)w);
2131	if (expect_false (!ev_is_active (w)))	2677	if (expect_false (!ev_is_active (w)))
2132	return;	2678	return;
2133		2679
		2680	EV_FREQUENT_CHECK;
		2681
2134	{	2682	{
2135	int active = ((W)w)->active;	2683	int active = ev_active (w);
		2684
2136	prepares [active - 1] = prepares [--preparecnt];	2685	prepares [active - 1] = prepares [--preparecnt];
2137	((W)prepares [active - 1])->active = active;	2686	ev_active (prepares [active - 1]) = active;
2138	}	2687	}
2139		2688
2140	ev_stop (EV_A_ (W)w);	2689	ev_stop (EV_A_ (W)w);
		2690
		2691	EV_FREQUENT_CHECK;
2141	}	2692	}
2142		2693
2143	void	2694	void
2144	ev_check_start (EV_P_ ev_check *w)	2695	ev_check_start (EV_P_ ev_check *w)
2145	{	2696	{
2146	if (expect_false (ev_is_active (w)))	2697	if (expect_false (ev_is_active (w)))
2147	return;	2698	return;
		2699
		2700	EV_FREQUENT_CHECK;
2148		2701
2149	ev_start (EV_A_ (W)w, ++checkcnt);	2702	ev_start (EV_A_ (W)w, ++checkcnt);
2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2703	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2151	checks [checkcnt - 1] = w;	2704	checks [checkcnt - 1] = w;
		2705
		2706	EV_FREQUENT_CHECK;
2152	}	2707	}
2153		2708
2154	void	2709	void
2155	ev_check_stop (EV_P_ ev_check *w)	2710	ev_check_stop (EV_P_ ev_check *w)
2156	{	2711	{
2157	clear_pending (EV_A_ (W)w);	2712	clear_pending (EV_A_ (W)w);
2158	if (expect_false (!ev_is_active (w)))	2713	if (expect_false (!ev_is_active (w)))
2159	return;	2714	return;
2160		2715
		2716	EV_FREQUENT_CHECK;
		2717
2161	{	2718	{
2162	int active = ((W)w)->active;	2719	int active = ev_active (w);
		2720
2163	checks [active - 1] = checks [--checkcnt];	2721	checks [active - 1] = checks [--checkcnt];
2164	((W)checks [active - 1])->active = active;	2722	ev_active (checks [active - 1]) = active;
2165	}	2723	}
2166		2724
2167	ev_stop (EV_A_ (W)w);	2725	ev_stop (EV_A_ (W)w);
		2726
		2727	EV_FREQUENT_CHECK;
2168	}	2728	}
2169		2729
2170	#if EV_EMBED_ENABLE	2730	#if EV_EMBED_ENABLE
2171	void noinline	2731	void noinline
2172	ev_embed_sweep (EV_P_ ev_embed *w)	2732	ev_embed_sweep (EV_P_ ev_embed *w)
2173	{	2733	{
2174	ev_loop (w->loop, EVLOOP_NONBLOCK);	2734	ev_loop (w->other, EVLOOP_NONBLOCK);
2175	}	2735	}
2176		2736
2177	static void	2737	static void
2178	embed_cb (EV_P_ ev_io *io, int revents)	2738	embed_io_cb (EV_P_ ev_io *io, int revents)
2179	{	2739	{
2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2740	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2181		2741
2182	if (ev_cb (w))	2742	if (ev_cb (w))
2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2743	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184	else	2744	else
2185	ev_embed_sweep (loop, w);	2745	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	2746	}
		2747
		2748	static void
		2749	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2750	{
		2751	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2752
		2753	{
		2754	struct ev_loop *loop = w->other;
		2755
		2756	while (fdchangecnt)
		2757	{
		2758	fd_reify (EV_A);
		2759	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2760	}
		2761	}
		2762	}
		2763
		2764	#if 0
		2765	static void
		2766	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2767	{
		2768	ev_idle_stop (EV_A_ idle);
		2769	}
		2770	#endif
2187		2771
2188	void	2772	void
2189	ev_embed_start (EV_P_ ev_embed *w)	2773	ev_embed_start (EV_P_ ev_embed *w)
2190	{	2774	{
2191	if (expect_false (ev_is_active (w)))	2775	if (expect_false (ev_is_active (w)))
2192	return;	2776	return;
2193		2777
2194	{	2778	{
2195	struct ev_loop *loop = w->loop;	2779	struct ev_loop *loop = w->other;
2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2780	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2781	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198	}	2782	}
		2783
		2784	EV_FREQUENT_CHECK;
2199		2785
2200	ev_set_priority (&w->io, ev_priority (w));	2786	ev_set_priority (&w->io, ev_priority (w));
2201	ev_io_start (EV_A_ &w->io);	2787	ev_io_start (EV_A_ &w->io);
2202		2788
		2789	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2790	ev_set_priority (&w->prepare, EV_MINPRI);
		2791	ev_prepare_start (EV_A_ &w->prepare);
		2792
		2793	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2794
2203	ev_start (EV_A_ (W)w, 1);	2795	ev_start (EV_A_ (W)w, 1);
		2796
		2797	EV_FREQUENT_CHECK;
2204	}	2798	}
2205		2799
2206	void	2800	void
2207	ev_embed_stop (EV_P_ ev_embed *w)	2801	ev_embed_stop (EV_P_ ev_embed *w)
2208	{	2802	{
2209	clear_pending (EV_A_ (W)w);	2803	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2804	if (expect_false (!ev_is_active (w)))
2211	return;	2805	return;
2212		2806
		2807	EV_FREQUENT_CHECK;
		2808
2213	ev_io_stop (EV_A_ &w->io);	2809	ev_io_stop (EV_A_ &w->io);
		2810	ev_prepare_stop (EV_A_ &w->prepare);
2214		2811
2215	ev_stop (EV_A_ (W)w);	2812	ev_stop (EV_A_ (W)w);
		2813
		2814	EV_FREQUENT_CHECK;
2216	}	2815	}
2217	#endif	2816	#endif
2218		2817
2219	#if EV_FORK_ENABLE	2818	#if EV_FORK_ENABLE
2220	void	2819	void
2221	ev_fork_start (EV_P_ ev_fork *w)	2820	ev_fork_start (EV_P_ ev_fork *w)
2222	{	2821	{
2223	if (expect_false (ev_is_active (w)))	2822	if (expect_false (ev_is_active (w)))
2224	return;	2823	return;
		2824
		2825	EV_FREQUENT_CHECK;
2225		2826
2226	ev_start (EV_A_ (W)w, ++forkcnt);	2827	ev_start (EV_A_ (W)w, ++forkcnt);
2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2828	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2228	forks [forkcnt - 1] = w;	2829	forks [forkcnt - 1] = w;
		2830
		2831	EV_FREQUENT_CHECK;
2229	}	2832	}
2230		2833
2231	void	2834	void
2232	ev_fork_stop (EV_P_ ev_fork *w)	2835	ev_fork_stop (EV_P_ ev_fork *w)
2233	{	2836	{
2234	clear_pending (EV_A_ (W)w);	2837	clear_pending (EV_A_ (W)w);
2235	if (expect_false (!ev_is_active (w)))	2838	if (expect_false (!ev_is_active (w)))
2236	return;	2839	return;
2237		2840
		2841	EV_FREQUENT_CHECK;
		2842
2238	{	2843	{
2239	int active = ((W)w)->active;	2844	int active = ev_active (w);
		2845
2240	forks [active - 1] = forks [--forkcnt];	2846	forks [active - 1] = forks [--forkcnt];
2241	((W)forks [active - 1])->active = active;	2847	ev_active (forks [active - 1]) = active;
2242	}	2848	}
2243		2849
2244	ev_stop (EV_A_ (W)w);	2850	ev_stop (EV_A_ (W)w);
		2851
		2852	EV_FREQUENT_CHECK;
		2853	}
		2854	#endif
		2855
		2856	#if EV_ASYNC_ENABLE
		2857	void
		2858	ev_async_start (EV_P_ ev_async *w)
		2859	{
		2860	if (expect_false (ev_is_active (w)))
		2861	return;
		2862
		2863	evpipe_init (EV_A);
		2864
		2865	EV_FREQUENT_CHECK;
		2866
		2867	ev_start (EV_A_ (W)w, ++asynccnt);
		2868	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2869	asyncs [asynccnt - 1] = w;
		2870
		2871	EV_FREQUENT_CHECK;
		2872	}
		2873
		2874	void
		2875	ev_async_stop (EV_P_ ev_async *w)
		2876	{
		2877	clear_pending (EV_A_ (W)w);
		2878	if (expect_false (!ev_is_active (w)))
		2879	return;
		2880
		2881	EV_FREQUENT_CHECK;
		2882
		2883	{
		2884	int active = ev_active (w);
		2885
		2886	asyncs [active - 1] = asyncs [--asynccnt];
		2887	ev_active (asyncs [active - 1]) = active;
		2888	}
		2889
		2890	ev_stop (EV_A_ (W)w);
		2891
		2892	EV_FREQUENT_CHECK;
		2893	}
		2894
		2895	void
		2896	ev_async_send (EV_P_ ev_async *w)
		2897	{
		2898	w->sent = 1;
		2899	evpipe_write (EV_A_ &gotasync);
2245	}	2900	}
2246	#endif	2901	#endif
2247		2902
2248	/*****************************************************************************/	2903	/*****************************************************************************/
2249		2904
…		…
2307	ev_timer_set (&once->to, timeout, 0.);	2962	ev_timer_set (&once->to, timeout, 0.);
2308	ev_timer_start (EV_A_ &once->to);	2963	ev_timer_start (EV_A_ &once->to);
2309	}	2964	}
2310	}	2965	}
2311		2966
		2967	#if EV_MULTIPLICITY
		2968	#include "ev_wrap.h"
		2969	#endif
		2970
2312	#ifdef __cplusplus	2971	#ifdef __cplusplus
2313	}	2972	}
2314	#endif	2973	#endif
2315		2974

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