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Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs.
Revision 1.240 by root, Thu May 8 21:21:41 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	/**/
220		284
221	/*	285	/*
…		…
230		294
231	#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) */
232	#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) */
233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		298
235	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	301	# define noinline __attribute__ ((noinline))
238	#else	302	#else
239	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
240	# define noinline	304	# define noinline
241	# if __STDC_VERSION__ < 199901L	305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	306	# define inline
243	# endif	307	# endif
244	#endif	308	#endif
245		309
246	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
261		325
262	typedef ev_watcher *W;	326	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
265		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 */
266	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
267		338
268	#ifdef _WIN32	339	#ifdef _WIN32
269	# include "ev_win32.c"	340	# include "ev_win32.c"
270	#endif	341	#endif
271		342
…		…
292	perror (msg);	363	perror (msg);
293	abort ();	364	abort ();
294	}	365	}
295	}	366	}
296		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
297	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		384
299	void	385	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	387	{
302	alloc = cb;	388	alloc = cb;
303	}	389	}
304		390
305	inline_speed void *	391	inline_speed void *
306	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
307	{	393	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
309		395
310	if (!ptr && size)	396	if (!ptr && size)
311	{	397	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	399	abort ();
…		…
407	{	493	{
408	return ev_rt_now;	494	return ev_rt_now;
409	}	495	}
410	#endif	496	#endif
411		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
412	int inline_size	527	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	528	array_nextsize (int elem, int cur, int cnt)
414	{	529	{
415	int ncur = cur + 1;	530	int ncur = cur + 1;
416		531
417	do	532	do
418	ncur <<= 1;	533	ncur <<= 1;
419	while (cnt > ncur);	534	while (cnt > ncur);
420		535
421	/* 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 */
422	if (elem * ncur > 4096)	537	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	538	{
424	ncur *= elem;	539	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	540	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	541	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	542	ncur /= elem;
428	}	543	}
429		544
430	return ncur;	545	return ncur;
…		…
542		657
543	#if EV_SELECT_IS_WINSOCKET	658	#if EV_SELECT_IS_WINSOCKET
544	if (events)	659	if (events)
545	{	660	{
546	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
547	anfd->handle = _get_osfhandle (fd);	665	anfd->handle = _get_osfhandle (fd);
		666	#endif
548	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));
549	}	668	}
550	#endif	669	#endif
551		670
552	{	671	{
…		…
640	}	759	}
641	}	760	}
642		761
643	/*****************************************************************************/	762	/*****************************************************************************/
644		763
		764	/*
		765	* at the moment we allow libev the luxury of two heaps,
		766	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		767	* which is more cache-efficient.
		768	* the difference is about 5% with 50000+ watchers.
		769	*/
		770	#define USE_4HEAP !EV_MINIMAL
		771	#if USE_4HEAP
		772
		773	#define DHEAP 4
		774	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		775
		776	/* towards the root */
645	void inline_speed	777	void inline_speed
646	upheap (WT *heap, int k)	778	upheap (WT *heap, int k)
647	{	779	{
648	WT w = heap [k];	780	WT w = heap [k];
		781	ev_tstamp w_at = w->at;
649		782
650	while (k)	783	for (;;)
651	{	784	{
652	int p = (k - 1) >> 1;	785	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
653		786
654	if (heap [p]->at <= w->at)	787	if (p == k || heap [p]->at <= w_at)
655	break;	788	break;
656		789
657	heap [k] = heap [p];	790	heap [k] = heap [p];
658	((W)heap [k])->active = k + 1;	791	ev_active (heap [k]) = k;
659	k = p;	792	k = p;
660	}	793	}
661		794
662	heap [k] = w;	795	heap [k] = w;
663	((W)heap [k])->active = k + 1;	796	ev_active (heap [k]) = k;
664	}	797	}
665		798
		799	/* away from the root */
666	void inline_speed	800	void inline_speed
667	downheap (WT *heap, int N, int k)	801	downheap (WT *heap, int N, int k)
668	{	802	{
669	WT w = heap [k];	803	WT w = heap [k];
		804	WT *E = heap + N + HEAP0;
670		805
671	for (;;)	806	for (;;)
672	{	807	{
		808	ev_tstamp minat;
		809	WT *minpos;
		810	WT *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
		811
		812	// find minimum child
		813	if (expect_true (pos + DHEAP - 1 < E))
		814	{
		815	/* fast path */ (minpos = pos + 0), (minat = (*minpos)->at);
		816	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
		817	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
		818	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
		819	}
		820	else if (pos < E)
		821	{
		822	/* slow path */ (minpos = pos + 0), (minat = (*minpos)->at);
		823	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
		824	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
		825	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
		826	}
		827	else
		828	break;
		829
		830	if (w->at <= minat)
		831	break;
		832
		833	ev_active (*minpos) = k;
		834	heap [k] = *minpos;
		835
		836	k = minpos - heap;
		837	}
		838
		839	heap [k] = w;
		840	ev_active (heap [k]) = k;
		841	}
		842
		843	#else // 4HEAP
		844
		845	#define HEAP0 1
		846
		847	/* towards the root */
		848	void inline_speed
		849	upheap (WT *heap, int k)
		850	{
		851	WT w = heap [k];
		852
		853	for (;;)
		854	{
		855	int p = k >> 1;
		856
		857	/* maybe we could use a dummy element at heap [0]? */
		858	if (!p || heap [p]->at <= w->at)
		859	break;
		860
		861	heap [k] = heap [p];
		862	ev_active (heap [k]) = k;
		863	k = p;
		864	}
		865
		866	heap [k] = w;
		867	ev_active (heap [k]) = k;
		868	}
		869
		870	/* away from the root */
		871	void inline_speed
		872	downheap (WT *heap, int N, int k)
		873	{
		874	WT w = heap [k];
		875
		876	for (;;)
		877	{
673	int c = (k << 1) + 1;	878	int c = k << 1;
674		879
675	if (c >= N)	880	if (c > N)
676	break;	881	break;
677		882
678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at	883	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
679	? 1 : 0;	884	? 1 : 0;
680		885
681	if (w->at <= heap [c]->at)	886	if (w->at <= heap [c]->at)
682	break;	887	break;
683		888
684	heap [k] = heap [c];	889	heap [k] = heap [c];
685	((W)heap [k])->active = k + 1;	890	((W)heap [k])->active = k;
686		891
687	k = c;	892	k = c;
688	}	893	}
689		894
690	heap [k] = w;	895	heap [k] = w;
691	((W)heap [k])->active = k + 1;	896	ev_active (heap [k]) = k;
692	}	897	}
		898	#endif
693		899
694	void inline_size	900	void inline_size
695	adjustheap (WT *heap, int N, int k)	901	adjustheap (WT *heap, int N, int k)
696	{	902	{
697	upheap (heap, k);	903	upheap (heap, k);
…		…
701	/*****************************************************************************/	907	/*****************************************************************************/
702		908
703	typedef struct	909	typedef struct
704	{	910	{
705	WL head;	911	WL head;
706	sig_atomic_t volatile gotsig;	912	EV_ATOMIC_T gotsig;
707	} ANSIG;	913	} ANSIG;
708		914
709	static ANSIG *signals;	915	static ANSIG *signals;
710	static int signalmax;	916	static int signalmax;
711		917
712	static int sigpipe [2];	918	static EV_ATOMIC_T gotsig;
713	static sig_atomic_t volatile gotsig;
714	static ev_io sigev;
715		919
716	void inline_size	920	void inline_size
717	signals_init (ANSIG *base, int count)	921	signals_init (ANSIG *base, int count)
718	{	922	{
719	while (count--)	923	while (count--)
…		…
723		927
724	++base;	928	++base;
725	}	929	}
726	}	930	}
727		931
728	static void	932	/*****************************************************************************/
729	sighandler (int signum)
730	{
731	#if _WIN32
732	signal (signum, sighandler);
733	#endif
734
735	signals [signum - 1].gotsig = 1;
736
737	if (!gotsig)
738	{
739	int old_errno = errno;
740	gotsig = 1;
741	write (sigpipe [1], &signum, 1);
742	errno = old_errno;
743	}
744	}
745
746	void noinline
747	ev_feed_signal_event (EV_P_ int signum)
748	{
749	WL w;
750
751	#if EV_MULTIPLICITY
752	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
753	#endif
754
755	--signum;
756
757	if (signum < 0 || signum >= signalmax)
758	return;
759
760	signals [signum].gotsig = 0;
761
762	for (w = signals [signum].head; w; w = w->next)
763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
764	}
765
766	static void
767	sigcb (EV_P_ ev_io *iow, int revents)
768	{
769	int signum;
770
771	read (sigpipe [0], &revents, 1);
772	gotsig = 0;
773
774	for (signum = signalmax; signum--; )
775	if (signals [signum].gotsig)
776	ev_feed_signal_event (EV_A_ signum + 1);
777	}
778		933
779	void inline_speed	934	void inline_speed
780	fd_intern (int fd)	935	fd_intern (int fd)
781	{	936	{
782	#ifdef _WIN32	937	#ifdef _WIN32
…		…
787	fcntl (fd, F_SETFL, O_NONBLOCK);	942	fcntl (fd, F_SETFL, O_NONBLOCK);
788	#endif	943	#endif
789	}	944	}
790		945
791	static void noinline	946	static void noinline
792	siginit (EV_P)	947	evpipe_init (EV_P)
793	{	948	{
		949	if (!ev_is_active (&pipeev))
		950	{
		951	#if EV_USE_EVENTFD
		952	if ((evfd = eventfd (0, 0)) >= 0)
		953	{
		954	evpipe [0] = -1;
		955	fd_intern (evfd);
		956	ev_io_set (&pipeev, evfd, EV_READ);
		957	}
		958	else
		959	#endif
		960	{
		961	while (pipe (evpipe))
		962	syserr ("(libev) error creating signal/async pipe");
		963
794	fd_intern (sigpipe [0]);	964	fd_intern (evpipe [0]);
795	fd_intern (sigpipe [1]);	965	fd_intern (evpipe [1]);
		966	ev_io_set (&pipeev, evpipe [0], EV_READ);
		967	}
796		968
797	ev_io_set (&sigev, sigpipe [0], EV_READ);
798	ev_io_start (EV_A_ &sigev);	969	ev_io_start (EV_A_ &pipeev);
799	ev_unref (EV_A); /* child watcher should not keep loop alive */	970	ev_unref (EV_A); /* watcher should not keep loop alive */
		971	}
		972	}
		973
		974	void inline_size
		975	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		976	{
		977	if (!*flag)
		978	{
		979	int old_errno = errno; /* save errno because write might clobber it */
		980
		981	*flag = 1;
		982
		983	#if EV_USE_EVENTFD
		984	if (evfd >= 0)
		985	{
		986	uint64_t counter = 1;
		987	write (evfd, &counter, sizeof (uint64_t));
		988	}
		989	else
		990	#endif
		991	write (evpipe [1], &old_errno, 1);
		992
		993	errno = old_errno;
		994	}
		995	}
		996
		997	static void
		998	pipecb (EV_P_ ev_io *iow, int revents)
		999	{
		1000	#if EV_USE_EVENTFD
		1001	if (evfd >= 0)
		1002	{
		1003	uint64_t counter;
		1004	read (evfd, &counter, sizeof (uint64_t));
		1005	}
		1006	else
		1007	#endif
		1008	{
		1009	char dummy;
		1010	read (evpipe [0], &dummy, 1);
		1011	}
		1012
		1013	if (gotsig && ev_is_default_loop (EV_A))
		1014	{
		1015	int signum;
		1016	gotsig = 0;
		1017
		1018	for (signum = signalmax; signum--; )
		1019	if (signals [signum].gotsig)
		1020	ev_feed_signal_event (EV_A_ signum + 1);
		1021	}
		1022
		1023	#if EV_ASYNC_ENABLE
		1024	if (gotasync)
		1025	{
		1026	int i;
		1027	gotasync = 0;
		1028
		1029	for (i = asynccnt; i--; )
		1030	if (asyncs [i]->sent)
		1031	{
		1032	asyncs [i]->sent = 0;
		1033	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1034	}
		1035	}
		1036	#endif
800	}	1037	}
801		1038
802	/*****************************************************************************/	1039	/*****************************************************************************/
803		1040
		1041	static void
		1042	ev_sighandler (int signum)
		1043	{
		1044	#if EV_MULTIPLICITY
		1045	struct ev_loop *loop = &default_loop_struct;
		1046	#endif
		1047
		1048	#if _WIN32
		1049	signal (signum, ev_sighandler);
		1050	#endif
		1051
		1052	signals [signum - 1].gotsig = 1;
		1053	evpipe_write (EV_A_ &gotsig);
		1054	}
		1055
		1056	void noinline
		1057	ev_feed_signal_event (EV_P_ int signum)
		1058	{
		1059	WL w;
		1060
		1061	#if EV_MULTIPLICITY
		1062	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1063	#endif
		1064
		1065	--signum;
		1066
		1067	if (signum < 0 || signum >= signalmax)
		1068	return;
		1069
		1070	signals [signum].gotsig = 0;
		1071
		1072	for (w = signals [signum].head; w; w = w->next)
		1073	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1074	}
		1075
		1076	/*****************************************************************************/
		1077
804	static WL childs [EV_PID_HASHSIZE];	1078	static WL childs [EV_PID_HASHSIZE];
805		1079
806	#ifndef _WIN32	1080	#ifndef _WIN32
807		1081
808	static ev_signal childev;	1082	static ev_signal childev;
809		1083
		1084	#ifndef WIFCONTINUED
		1085	# define WIFCONTINUED(status) 0
		1086	#endif
		1087
810	void inline_speed	1088	void inline_speed
811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1089	child_reap (EV_P_ int chain, int pid, int status)
812	{	1090	{
813	ev_child *w;	1091	ev_child *w;
		1092	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
814		1093
815	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1094	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1095	{
816	if (w->pid == pid || !w->pid)	1096	if ((w->pid == pid || !w->pid)
		1097	&& (!traced || (w->flags & 1)))
817	{	1098	{
818	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1099	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
819	w->rpid = pid;	1100	w->rpid = pid;
820	w->rstatus = status;	1101	w->rstatus = status;
821	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1102	ev_feed_event (EV_A_ (W)w, EV_CHILD);
822	}	1103	}
		1104	}
823	}	1105	}
824		1106
825	#ifndef WCONTINUED	1107	#ifndef WCONTINUED
826	# define WCONTINUED 0	1108	# define WCONTINUED 0
827	#endif	1109	#endif
…		…
836	if (!WCONTINUED	1118	if (!WCONTINUED
837	|| errno != EINVAL	1119	|| errno != EINVAL
838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1120	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
839	return;	1121	return;
840		1122
841	/* make sure we are called again until all childs have been reaped */	1123	/* make sure we are called again until all children have been reaped */
842	/* we need to do it this way so that the callback gets called before we continue */	1124	/* we need to do it this way so that the callback gets called before we continue */
843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1125	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
844		1126
845	child_reap (EV_A_ sw, pid, pid, status);	1127	child_reap (EV_A_ pid, pid, status);
846	if (EV_PID_HASHSIZE > 1)	1128	if (EV_PID_HASHSIZE > 1)
847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1129	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
848	}	1130	}
849		1131
850	#endif	1132	#endif
851		1133
852	/*****************************************************************************/	1134	/*****************************************************************************/
…		…
924	}	1206	}
925		1207
926	unsigned int	1208	unsigned int
927	ev_embeddable_backends (void)	1209	ev_embeddable_backends (void)
928	{	1210	{
929	return EVBACKEND_EPOLL	1211	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
930	| EVBACKEND_KQUEUE	1212
931	| EVBACKEND_PORT;	1213	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1214	/* please fix it and tell me how to detect the fix */
		1215	flags &= ~EVBACKEND_EPOLL;
		1216
		1217	return flags;
932	}	1218	}
933		1219
934	unsigned int	1220	unsigned int
935	ev_backend (EV_P)	1221	ev_backend (EV_P)
936	{	1222	{
…		…
939		1225
940	unsigned int	1226	unsigned int
941	ev_loop_count (EV_P)	1227	ev_loop_count (EV_P)
942	{	1228	{
943	return loop_count;	1229	return loop_count;
		1230	}
		1231
		1232	void
		1233	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1234	{
		1235	io_blocktime = interval;
		1236	}
		1237
		1238	void
		1239	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1240	{
		1241	timeout_blocktime = interval;
944	}	1242	}
945		1243
946	static void noinline	1244	static void noinline
947	loop_init (EV_P_ unsigned int flags)	1245	loop_init (EV_P_ unsigned int flags)
948	{	1246	{
…		…
954	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1252	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
955	have_monotonic = 1;	1253	have_monotonic = 1;
956	}	1254	}
957	#endif	1255	#endif
958		1256
959	ev_rt_now = ev_time ();	1257	ev_rt_now = ev_time ();
960	mn_now = get_clock ();	1258	mn_now = get_clock ();
961	now_floor = mn_now;	1259	now_floor = mn_now;
962	rtmn_diff = ev_rt_now - mn_now;	1260	rtmn_diff = ev_rt_now - mn_now;
		1261
		1262	io_blocktime = 0.;
		1263	timeout_blocktime = 0.;
		1264	backend = 0;
		1265	backend_fd = -1;
		1266	gotasync = 0;
		1267	#if EV_USE_INOTIFY
		1268	fs_fd = -2;
		1269	#endif
963		1270
964	/* pid check not overridable via env */	1271	/* pid check not overridable via env */
965	#ifndef _WIN32	1272	#ifndef _WIN32
966	if (flags & EVFLAG_FORKCHECK)	1273	if (flags & EVFLAG_FORKCHECK)
967	curpid = getpid ();	1274	curpid = getpid ();
…		…
970	if (!(flags & EVFLAG_NOENV)	1277	if (!(flags & EVFLAG_NOENV)
971	&& !enable_secure ()	1278	&& !enable_secure ()
972	&& getenv ("LIBEV_FLAGS"))	1279	&& getenv ("LIBEV_FLAGS"))
973	flags = atoi (getenv ("LIBEV_FLAGS"));	1280	flags = atoi (getenv ("LIBEV_FLAGS"));
974		1281
975	if (!(flags & 0x0000ffffUL))	1282	if (!(flags & 0x0000ffffU))
976	flags |= ev_recommended_backends ();	1283	flags |= ev_recommended_backends ();
977
978	backend = 0;
979	backend_fd = -1;
980	#if EV_USE_INOTIFY
981	fs_fd = -2;
982	#endif
983		1284
984	#if EV_USE_PORT	1285	#if EV_USE_PORT
985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1286	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
986	#endif	1287	#endif
987	#if EV_USE_KQUEUE	1288	#if EV_USE_KQUEUE
…		…
995	#endif	1296	#endif
996	#if EV_USE_SELECT	1297	#if EV_USE_SELECT
997	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1298	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
998	#endif	1299	#endif
999		1300
1000	ev_init (&sigev, sigcb);	1301	ev_init (&pipeev, pipecb);
1001	ev_set_priority (&sigev, EV_MAXPRI);	1302	ev_set_priority (&pipeev, EV_MAXPRI);
1002	}	1303	}
1003	}	1304	}
1004		1305
1005	static void noinline	1306	static void noinline
1006	loop_destroy (EV_P)	1307	loop_destroy (EV_P)
1007	{	1308	{
1008	int i;	1309	int i;
		1310
		1311	if (ev_is_active (&pipeev))
		1312	{
		1313	ev_ref (EV_A); /* signal watcher */
		1314	ev_io_stop (EV_A_ &pipeev);
		1315
		1316	#if EV_USE_EVENTFD
		1317	if (evfd >= 0)
		1318	close (evfd);
		1319	#endif
		1320
		1321	if (evpipe [0] >= 0)
		1322	{
		1323	close (evpipe [0]);
		1324	close (evpipe [1]);
		1325	}
		1326	}
1009		1327
1010	#if EV_USE_INOTIFY	1328	#if EV_USE_INOTIFY
1011	if (fs_fd >= 0)	1329	if (fs_fd >= 0)
1012	close (fs_fd);	1330	close (fs_fd);
1013	#endif	1331	#endif
…		…
1036	array_free (pending, [i]);	1354	array_free (pending, [i]);
1037	#if EV_IDLE_ENABLE	1355	#if EV_IDLE_ENABLE
1038	array_free (idle, [i]);	1356	array_free (idle, [i]);
1039	#endif	1357	#endif
1040	}	1358	}
		1359
		1360	ev_free (anfds); anfdmax = 0;
1041		1361
1042	/* have to use the microsoft-never-gets-it-right macro */	1362	/* have to use the microsoft-never-gets-it-right macro */
1043	array_free (fdchange, EMPTY);	1363	array_free (fdchange, EMPTY);
1044	array_free (timer, EMPTY);	1364	array_free (timer, EMPTY);
1045	#if EV_PERIODIC_ENABLE	1365	#if EV_PERIODIC_ENABLE
1046	array_free (periodic, EMPTY);	1366	array_free (periodic, EMPTY);
1047	#endif	1367	#endif
		1368	#if EV_FORK_ENABLE
		1369	array_free (fork, EMPTY);
		1370	#endif
1048	array_free (prepare, EMPTY);	1371	array_free (prepare, EMPTY);
1049	array_free (check, EMPTY);	1372	array_free (check, EMPTY);
		1373	#if EV_ASYNC_ENABLE
		1374	array_free (async, EMPTY);
		1375	#endif
1050		1376
1051	backend = 0;	1377	backend = 0;
1052	}	1378	}
1053		1379
		1380	#if EV_USE_INOTIFY
1054	void inline_size infy_fork (EV_P);	1381	void inline_size infy_fork (EV_P);
		1382	#endif
1055		1383
1056	void inline_size	1384	void inline_size
1057	loop_fork (EV_P)	1385	loop_fork (EV_P)
1058	{	1386	{
1059	#if EV_USE_PORT	1387	#if EV_USE_PORT
…		…
1067	#endif	1395	#endif
1068	#if EV_USE_INOTIFY	1396	#if EV_USE_INOTIFY
1069	infy_fork (EV_A);	1397	infy_fork (EV_A);
1070	#endif	1398	#endif
1071		1399
1072	if (ev_is_active (&sigev))	1400	if (ev_is_active (&pipeev))
1073	{	1401	{
1074	/* default loop */	1402	/* this "locks" the handlers against writing to the pipe */
		1403	/* while we modify the fd vars */
		1404	gotsig = 1;
		1405	#if EV_ASYNC_ENABLE
		1406	gotasync = 1;
		1407	#endif
1075		1408
1076	ev_ref (EV_A);	1409	ev_ref (EV_A);
1077	ev_io_stop (EV_A_ &sigev);	1410	ev_io_stop (EV_A_ &pipeev);
		1411
		1412	#if EV_USE_EVENTFD
		1413	if (evfd >= 0)
		1414	close (evfd);
		1415	#endif
		1416
		1417	if (evpipe [0] >= 0)
		1418	{
1078	close (sigpipe [0]);	1419	close (evpipe [0]);
1079	close (sigpipe [1]);	1420	close (evpipe [1]);
		1421	}
1080		1422
1081	while (pipe (sigpipe))
1082	syserr ("(libev) error creating pipe");
1083
1084	siginit (EV_A);	1423	evpipe_init (EV_A);
		1424	/* now iterate over everything, in case we missed something */
		1425	pipecb (EV_A_ &pipeev, EV_READ);
1085	}	1426	}
1086		1427
1087	postfork = 0;	1428	postfork = 0;
1088	}	1429	}
1089		1430
…		…
1111	}	1452	}
1112		1453
1113	void	1454	void
1114	ev_loop_fork (EV_P)	1455	ev_loop_fork (EV_P)
1115	{	1456	{
1116	postfork = 1;	1457	postfork = 1; /* must be in line with ev_default_fork */
1117	}	1458	}
1118
1119	#endif	1459	#endif
1120		1460
1121	#if EV_MULTIPLICITY	1461	#if EV_MULTIPLICITY
1122	struct ev_loop *	1462	struct ev_loop *
1123	ev_default_loop_init (unsigned int flags)	1463	ev_default_loop_init (unsigned int flags)
1124	#else	1464	#else
1125	int	1465	int
1126	ev_default_loop (unsigned int flags)	1466	ev_default_loop (unsigned int flags)
1127	#endif	1467	#endif
1128	{	1468	{
1129	if (sigpipe [0] == sigpipe [1])
1130	if (pipe (sigpipe))
1131	return 0;
1132
1133	if (!ev_default_loop_ptr)	1469	if (!ev_default_loop_ptr)
1134	{	1470	{
1135	#if EV_MULTIPLICITY	1471	#if EV_MULTIPLICITY
1136	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1472	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1137	#else	1473	#else
…		…
1140		1476
1141	loop_init (EV_A_ flags);	1477	loop_init (EV_A_ flags);
1142		1478
1143	if (ev_backend (EV_A))	1479	if (ev_backend (EV_A))
1144	{	1480	{
1145	siginit (EV_A);
1146
1147	#ifndef _WIN32	1481	#ifndef _WIN32
1148	ev_signal_init (&childev, childcb, SIGCHLD);	1482	ev_signal_init (&childev, childcb, SIGCHLD);
1149	ev_set_priority (&childev, EV_MAXPRI);	1483	ev_set_priority (&childev, EV_MAXPRI);
1150	ev_signal_start (EV_A_ &childev);	1484	ev_signal_start (EV_A_ &childev);
1151	ev_unref (EV_A); /* child watcher should not keep loop alive */	1485	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1168	#ifndef _WIN32	1502	#ifndef _WIN32
1169	ev_ref (EV_A); /* child watcher */	1503	ev_ref (EV_A); /* child watcher */
1170	ev_signal_stop (EV_A_ &childev);	1504	ev_signal_stop (EV_A_ &childev);
1171	#endif	1505	#endif
1172		1506
1173	ev_ref (EV_A); /* signal watcher */
1174	ev_io_stop (EV_A_ &sigev);
1175
1176	close (sigpipe [0]); sigpipe [0] = 0;
1177	close (sigpipe [1]); sigpipe [1] = 0;
1178
1179	loop_destroy (EV_A);	1507	loop_destroy (EV_A);
1180	}	1508	}
1181		1509
1182	void	1510	void
1183	ev_default_fork (void)	1511	ev_default_fork (void)
…		…
1185	#if EV_MULTIPLICITY	1513	#if EV_MULTIPLICITY
1186	struct ev_loop *loop = ev_default_loop_ptr;	1514	struct ev_loop *loop = ev_default_loop_ptr;
1187	#endif	1515	#endif
1188		1516
1189	if (backend)	1517	if (backend)
1190	postfork = 1;	1518	postfork = 1; /* must be in line with ev_loop_fork */
1191	}	1519	}
1192		1520
1193	/*****************************************************************************/	1521	/*****************************************************************************/
1194		1522
1195	void	1523	void
…		…
1215	p->w->pending = 0;	1543	p->w->pending = 0;
1216	EV_CB_INVOKE (p->w, p->events);	1544	EV_CB_INVOKE (p->w, p->events);
1217	}	1545	}
1218	}	1546	}
1219	}	1547	}
1220
1221	void inline_size
1222	timers_reify (EV_P)
1223	{
1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
1225	{
1226	ev_timer *w = (ev_timer *)timers [0];
1227
1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1229
1230	/* first reschedule or stop timer */
1231	if (w->repeat)
1232	{
1233	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1234
1235	((WT)w)->at += w->repeat;
1236	if (((WT)w)->at < mn_now)
1237	((WT)w)->at = mn_now;
1238
1239	downheap (timers, timercnt, 0);
1240	}
1241	else
1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1243
1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1245	}
1246	}
1247
1248	#if EV_PERIODIC_ENABLE
1249	void inline_size
1250	periodics_reify (EV_P)
1251	{
1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1253	{
1254	ev_periodic *w = (ev_periodic *)periodics [0];
1255
1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1257
1258	/* first reschedule or stop timer */
1259	if (w->reschedule_cb)
1260	{
1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1263	downheap (periodics, periodiccnt, 0);
1264	}
1265	else if (w->interval)
1266	{
1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1270	downheap (periodics, periodiccnt, 0);
1271	}
1272	else
1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1274
1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1276	}
1277	}
1278
1279	static void noinline
1280	periodics_reschedule (EV_P)
1281	{
1282	int i;
1283
1284	/* adjust periodics after time jump */
1285	for (i = 0; i < periodiccnt; ++i)
1286	{
1287	ev_periodic *w = (ev_periodic *)periodics [i];
1288
1289	if (w->reschedule_cb)
1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1291	else if (w->interval)
1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1293	}
1294
1295	/* now rebuild the heap */
1296	for (i = periodiccnt >> 1; i--; )
1297	downheap (periodics, periodiccnt, i);
1298	}
1299	#endif
1300		1548
1301	#if EV_IDLE_ENABLE	1549	#if EV_IDLE_ENABLE
1302	void inline_size	1550	void inline_size
1303	idle_reify (EV_P)	1551	idle_reify (EV_P)
1304	{	1552	{
…		…
1316	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1564	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1317	break;	1565	break;
1318	}	1566	}
1319	}	1567	}
1320	}	1568	}
		1569	}
		1570	#endif
		1571
		1572	void inline_size
		1573	timers_reify (EV_P)
		1574	{
		1575	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
		1576	{
		1577	ev_timer *w = (ev_timer *)timers [HEAP0];
		1578
		1579	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1580
		1581	/* first reschedule or stop timer */
		1582	if (w->repeat)
		1583	{
		1584	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1585
		1586	ev_at (w) += w->repeat;
		1587	if (ev_at (w) < mn_now)
		1588	ev_at (w) = mn_now;
		1589
		1590	downheap (timers, timercnt, HEAP0);
		1591	}
		1592	else
		1593	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1594
		1595	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1596	}
		1597	}
		1598
		1599	#if EV_PERIODIC_ENABLE
		1600	void inline_size
		1601	periodics_reify (EV_P)
		1602	{
		1603	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
		1604	{
		1605	ev_periodic *w = (ev_periodic *)periodics [HEAP0];
		1606
		1607	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1608
		1609	/* first reschedule or stop timer */
		1610	if (w->reschedule_cb)
		1611	{
		1612	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1613	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1614	downheap (periodics, periodiccnt, 1);
		1615	}
		1616	else if (w->interval)
		1617	{
		1618	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1619	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1620	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1621	downheap (periodics, periodiccnt, HEAP0);
		1622	}
		1623	else
		1624	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1625
		1626	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1627	}
		1628	}
		1629
		1630	static void noinline
		1631	periodics_reschedule (EV_P)
		1632	{
		1633	int i;
		1634
		1635	/* adjust periodics after time jump */
		1636	for (i = 1; i <= periodiccnt; ++i)
		1637	{
		1638	ev_periodic *w = (ev_periodic *)periodics [i];
		1639
		1640	if (w->reschedule_cb)
		1641	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1642	else if (w->interval)
		1643	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1644	}
		1645
		1646	/* now rebuild the heap */
		1647	for (i = periodiccnt >> 1; --i; )
		1648	downheap (periodics, periodiccnt, i + HEAP0);
1321	}	1649	}
1322	#endif	1650	#endif
1323		1651
1324	void inline_speed	1652	void inline_speed
1325	time_update (EV_P_ ev_tstamp max_block)	1653	time_update (EV_P_ ev_tstamp max_block)
…		…
1354	*/	1682	*/
1355	for (i = 4; --i; )	1683	for (i = 4; --i; )
1356	{	1684	{
1357	rtmn_diff = ev_rt_now - mn_now;	1685	rtmn_diff = ev_rt_now - mn_now;
1358		1686
1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1687	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1360	return; /* all is well */	1688	return; /* all is well */
1361		1689
1362	ev_rt_now = ev_time ();	1690	ev_rt_now = ev_time ();
1363	mn_now = get_clock ();	1691	mn_now = get_clock ();
1364	now_floor = mn_now;	1692	now_floor = mn_now;
…		…
1379	{	1707	{
1380	#if EV_PERIODIC_ENABLE	1708	#if EV_PERIODIC_ENABLE
1381	periodics_reschedule (EV_A);	1709	periodics_reschedule (EV_A);
1382	#endif	1710	#endif
1383	/* adjust timers. this is easy, as the offset is the same for all of them */	1711	/* adjust timers. this is easy, as the offset is the same for all of them */
1384	for (i = 0; i < timercnt; ++i)	1712	for (i = 1; i <= timercnt; ++i)
1385	((WT)timers [i])->at += ev_rt_now - mn_now;	1713	ev_at (timers [i]) += ev_rt_now - mn_now;
1386	}	1714	}
1387		1715
1388	mn_now = ev_rt_now;	1716	mn_now = ev_rt_now;
1389	}	1717	}
1390	}	1718	}
…		…
1404	static int loop_done;	1732	static int loop_done;
1405		1733
1406	void	1734	void
1407	ev_loop (EV_P_ int flags)	1735	ev_loop (EV_P_ int flags)
1408	{	1736	{
1409	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1737	loop_done = EVUNLOOP_CANCEL;
1410	? EVUNLOOP_ONE
1411	: EVUNLOOP_CANCEL;
1412		1738
1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1739	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1414		1740
1415	do	1741	do
1416	{	1742	{
…		…
1450	/* update fd-related kernel structures */	1776	/* update fd-related kernel structures */
1451	fd_reify (EV_A);	1777	fd_reify (EV_A);
1452		1778
1453	/* calculate blocking time */	1779	/* calculate blocking time */
1454	{	1780	{
1455	ev_tstamp block;	1781	ev_tstamp waittime = 0.;
		1782	ev_tstamp sleeptime = 0.;
1456		1783
1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1784	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1458	block = 0.; /* do not block at all */
1459	else
1460	{	1785	{
1461	/* update time to cancel out callback processing overhead */	1786	/* update time to cancel out callback processing overhead */
1462	time_update (EV_A_ 1e100);	1787	time_update (EV_A_ 1e100);
1463		1788
1464	block = MAX_BLOCKTIME;	1789	waittime = MAX_BLOCKTIME;
1465		1790
1466	if (timercnt)	1791	if (timercnt)
1467	{	1792	{
1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1793	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1469	if (block > to) block = to;	1794	if (waittime > to) waittime = to;
1470	}	1795	}
1471		1796
1472	#if EV_PERIODIC_ENABLE	1797	#if EV_PERIODIC_ENABLE
1473	if (periodiccnt)	1798	if (periodiccnt)
1474	{	1799	{
1475	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1800	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1476	if (block > to) block = to;	1801	if (waittime > to) waittime = to;
1477	}	1802	}
1478	#endif	1803	#endif
1479		1804
1480	if (expect_false (block < 0.)) block = 0.;	1805	if (expect_false (waittime < timeout_blocktime))
		1806	waittime = timeout_blocktime;
		1807
		1808	sleeptime = waittime - backend_fudge;
		1809
		1810	if (expect_true (sleeptime > io_blocktime))
		1811	sleeptime = io_blocktime;
		1812
		1813	if (sleeptime)
		1814	{
		1815	ev_sleep (sleeptime);
		1816	waittime -= sleeptime;
		1817	}
1481	}	1818	}
1482		1819
1483	++loop_count;	1820	++loop_count;
1484	backend_poll (EV_A_ block);	1821	backend_poll (EV_A_ waittime);
1485		1822
1486	/* update ev_rt_now, do magic */	1823	/* update ev_rt_now, do magic */
1487	time_update (EV_A_ block);	1824	time_update (EV_A_ waittime + sleeptime);
1488	}	1825	}
1489		1826
1490	/* queue pending timers and reschedule them */	1827	/* queue pending timers and reschedule them */
1491	timers_reify (EV_A); /* relative timers called last */	1828	timers_reify (EV_A); /* relative timers called last */
1492	#if EV_PERIODIC_ENABLE	1829	#if EV_PERIODIC_ENABLE
…		…
1501	/* queue check watchers, to be executed first */	1838	/* queue check watchers, to be executed first */
1502	if (expect_false (checkcnt))	1839	if (expect_false (checkcnt))
1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1840	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1504		1841
1505	call_pending (EV_A);	1842	call_pending (EV_A);
1506
1507	}	1843	}
1508	while (expect_true (activecnt && !loop_done));	1844	while (expect_true (
		1845	activecnt
		1846	&& !loop_done
		1847	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1848	));
1509		1849
1510	if (loop_done == EVUNLOOP_ONE)	1850	if (loop_done == EVUNLOOP_ONE)
1511	loop_done = EVUNLOOP_CANCEL;	1851	loop_done = EVUNLOOP_CANCEL;
1512	}	1852	}
1513		1853
…		…
1631	ev_timer_start (EV_P_ ev_timer *w)	1971	ev_timer_start (EV_P_ ev_timer *w)
1632	{	1972	{
1633	if (expect_false (ev_is_active (w)))	1973	if (expect_false (ev_is_active (w)))
1634	return;	1974	return;
1635		1975
1636	((WT)w)->at += mn_now;	1976	ev_at (w) += mn_now;
1637		1977
1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1978	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1639		1979
1640	ev_start (EV_A_ (W)w, ++timercnt);	1980	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	1981	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1642	timers [timercnt - 1] = (WT)w;	1982	timers [ev_active (w)] = (WT)w;
1643	upheap (timers, timercnt - 1);	1983	upheap (timers, ev_active (w));
1644		1984
1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	1985	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1646	}	1986	}
1647		1987
1648	void noinline	1988	void noinline
1649	ev_timer_stop (EV_P_ ev_timer *w)	1989	ev_timer_stop (EV_P_ ev_timer *w)
1650	{	1990	{
1651	clear_pending (EV_A_ (W)w);	1991	clear_pending (EV_A_ (W)w);
1652	if (expect_false (!ev_is_active (w)))	1992	if (expect_false (!ev_is_active (w)))
1653	return;	1993	return;
1654		1994
1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1656
1657	{	1995	{
1658	int active = ((W)w)->active;	1996	int active = ev_active (w);
1659		1997
		1998	assert (("internal timer heap corruption", timers [active] == (WT)w));
		1999
1660	if (expect_true (--active < --timercnt))	2000	if (expect_true (active < timercnt + HEAP0 - 1))
1661	{	2001	{
1662	timers [active] = timers [timercnt];	2002	timers [active] = timers [timercnt + HEAP0 - 1];
1663	adjustheap (timers, timercnt, active);	2003	adjustheap (timers, timercnt, active);
1664	}	2004	}
		2005
		2006	--timercnt;
1665	}	2007	}
1666		2008
1667	((WT)w)->at -= mn_now;	2009	ev_at (w) -= mn_now;
1668		2010
1669	ev_stop (EV_A_ (W)w);	2011	ev_stop (EV_A_ (W)w);
1670	}	2012	}
1671		2013
1672	void noinline	2014	void noinline
…		…
1674	{	2016	{
1675	if (ev_is_active (w))	2017	if (ev_is_active (w))
1676	{	2018	{
1677	if (w->repeat)	2019	if (w->repeat)
1678	{	2020	{
1679	((WT)w)->at = mn_now + w->repeat;	2021	ev_at (w) = mn_now + w->repeat;
1680	adjustheap (timers, timercnt, ((W)w)->active - 1);	2022	adjustheap (timers, timercnt, ev_active (w));
1681	}	2023	}
1682	else	2024	else
1683	ev_timer_stop (EV_A_ w);	2025	ev_timer_stop (EV_A_ w);
1684	}	2026	}
1685	else if (w->repeat)	2027	else if (w->repeat)
1686	{	2028	{
1687	w->at = w->repeat;	2029	ev_at (w) = w->repeat;
1688	ev_timer_start (EV_A_ w);	2030	ev_timer_start (EV_A_ w);
1689	}	2031	}
1690	}	2032	}
1691		2033
1692	#if EV_PERIODIC_ENABLE	2034	#if EV_PERIODIC_ENABLE
…		…
1695	{	2037	{
1696	if (expect_false (ev_is_active (w)))	2038	if (expect_false (ev_is_active (w)))
1697	return;	2039	return;
1698		2040
1699	if (w->reschedule_cb)	2041	if (w->reschedule_cb)
1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2042	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1701	else if (w->interval)	2043	else if (w->interval)
1702	{	2044	{
1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2045	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1704	/* this formula differs from the one in periodic_reify because we do not always round up */	2046	/* this formula differs from the one in periodic_reify because we do not always round up */
1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2047	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1706	}	2048	}
1707	else	2049	else
1708	((WT)w)->at = w->offset;	2050	ev_at (w) = w->offset;
1709		2051
1710	ev_start (EV_A_ (W)w, ++periodiccnt);	2052	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2053	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1712	periodics [periodiccnt - 1] = (WT)w;	2054	periodics [ev_active (w)] = (WT)w;
1713	upheap (periodics, periodiccnt - 1);	2055	upheap (periodics, ev_active (w));
1714		2056
1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2057	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1716	}	2058	}
1717		2059
1718	void noinline	2060	void noinline
1719	ev_periodic_stop (EV_P_ ev_periodic *w)	2061	ev_periodic_stop (EV_P_ ev_periodic *w)
1720	{	2062	{
1721	clear_pending (EV_A_ (W)w);	2063	clear_pending (EV_A_ (W)w);
1722	if (expect_false (!ev_is_active (w)))	2064	if (expect_false (!ev_is_active (w)))
1723	return;	2065	return;
1724		2066
1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1726
1727	{	2067	{
1728	int active = ((W)w)->active;	2068	int active = ev_active (w);
1729		2069
		2070	assert (("internal periodic heap corruption", periodics [active] == (WT)w));
		2071
1730	if (expect_true (--active < --periodiccnt))	2072	if (expect_true (active < periodiccnt + HEAP0 - 1))
1731	{	2073	{
1732	periodics [active] = periodics [periodiccnt];	2074	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1733	adjustheap (periodics, periodiccnt, active);	2075	adjustheap (periodics, periodiccnt, active);
1734	}	2076	}
		2077
		2078	--periodiccnt;
1735	}	2079	}
1736		2080
1737	ev_stop (EV_A_ (W)w);	2081	ev_stop (EV_A_ (W)w);
1738	}	2082	}
1739		2083
…		…
1758	#endif	2102	#endif
1759	if (expect_false (ev_is_active (w)))	2103	if (expect_false (ev_is_active (w)))
1760	return;	2104	return;
1761		2105
1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2106	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2107
		2108	evpipe_init (EV_A);
1763		2109
1764	{	2110	{
1765	#ifndef _WIN32	2111	#ifndef _WIN32
1766	sigset_t full, prev;	2112	sigset_t full, prev;
1767	sigfillset (&full);	2113	sigfillset (&full);
…		…
1779	wlist_add (&signals [w->signum - 1].head, (WL)w);	2125	wlist_add (&signals [w->signum - 1].head, (WL)w);
1780		2126
1781	if (!((WL)w)->next)	2127	if (!((WL)w)->next)
1782	{	2128	{
1783	#if _WIN32	2129	#if _WIN32
1784	signal (w->signum, sighandler);	2130	signal (w->signum, ev_sighandler);
1785	#else	2131	#else
1786	struct sigaction sa;	2132	struct sigaction sa;
1787	sa.sa_handler = sighandler;	2133	sa.sa_handler = ev_sighandler;
1788	sigfillset (&sa.sa_mask);	2134	sigfillset (&sa.sa_mask);
1789	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2135	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1790	sigaction (w->signum, &sa, 0);	2136	sigaction (w->signum, &sa, 0);
1791	#endif	2137	#endif
1792	}	2138	}
…		…
1853	if (w->wd < 0)	2199	if (w->wd < 0)
1854	{	2200	{
1855	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2201	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1856		2202
1857	/* monitor some parent directory for speedup hints */	2203	/* monitor some parent directory for speedup hints */
		2204	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2205	/* but an efficiency issue only */
1858	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2206	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1859	{	2207	{
1860	char path [4096];	2208	char path [4096];
1861	strcpy (path, w->path);	2209	strcpy (path, w->path);
1862		2210
…		…
2107	clear_pending (EV_A_ (W)w);	2455	clear_pending (EV_A_ (W)w);
2108	if (expect_false (!ev_is_active (w)))	2456	if (expect_false (!ev_is_active (w)))
2109	return;	2457	return;
2110		2458
2111	{	2459	{
2112	int active = ((W)w)->active;	2460	int active = ev_active (w);
2113		2461
2114	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2462	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2115	((W)idles [ABSPRI (w)][active - 1])->active = active;	2463	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2116		2464
2117	ev_stop (EV_A_ (W)w);	2465	ev_stop (EV_A_ (W)w);
2118	--idleall;	2466	--idleall;
2119	}	2467	}
2120	}	2468	}
…		…
2137	clear_pending (EV_A_ (W)w);	2485	clear_pending (EV_A_ (W)w);
2138	if (expect_false (!ev_is_active (w)))	2486	if (expect_false (!ev_is_active (w)))
2139	return;	2487	return;
2140		2488
2141	{	2489	{
2142	int active = ((W)w)->active;	2490	int active = ev_active (w);
		2491
2143	prepares [active - 1] = prepares [--preparecnt];	2492	prepares [active - 1] = prepares [--preparecnt];
2144	((W)prepares [active - 1])->active = active;	2493	ev_active (prepares [active - 1]) = active;
2145	}	2494	}
2146		2495
2147	ev_stop (EV_A_ (W)w);	2496	ev_stop (EV_A_ (W)w);
2148	}	2497	}
2149		2498
…		…
2164	clear_pending (EV_A_ (W)w);	2513	clear_pending (EV_A_ (W)w);
2165	if (expect_false (!ev_is_active (w)))	2514	if (expect_false (!ev_is_active (w)))
2166	return;	2515	return;
2167		2516
2168	{	2517	{
2169	int active = ((W)w)->active;	2518	int active = ev_active (w);
		2519
2170	checks [active - 1] = checks [--checkcnt];	2520	checks [active - 1] = checks [--checkcnt];
2171	((W)checks [active - 1])->active = active;	2521	ev_active (checks [active - 1]) = active;
2172	}	2522	}
2173		2523
2174	ev_stop (EV_A_ (W)w);	2524	ev_stop (EV_A_ (W)w);
2175	}	2525	}
2176		2526
2177	#if EV_EMBED_ENABLE	2527	#if EV_EMBED_ENABLE
2178	void noinline	2528	void noinline
2179	ev_embed_sweep (EV_P_ ev_embed *w)	2529	ev_embed_sweep (EV_P_ ev_embed *w)
2180	{	2530	{
2181	ev_loop (w->loop, EVLOOP_NONBLOCK);	2531	ev_loop (w->other, EVLOOP_NONBLOCK);
2182	}	2532	}
2183		2533
2184	static void	2534	static void
2185	embed_cb (EV_P_ ev_io *io, int revents)	2535	embed_io_cb (EV_P_ ev_io *io, int revents)
2186	{	2536	{
2187	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2537	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2188		2538
2189	if (ev_cb (w))	2539	if (ev_cb (w))
2190	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2540	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191	else	2541	else
2192	ev_embed_sweep (loop, w);	2542	ev_loop (w->other, EVLOOP_NONBLOCK);
2193	}	2543	}
		2544
		2545	static void
		2546	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2547	{
		2548	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2549
		2550	{
		2551	struct ev_loop *loop = w->other;
		2552
		2553	while (fdchangecnt)
		2554	{
		2555	fd_reify (EV_A);
		2556	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2557	}
		2558	}
		2559	}
		2560
		2561	#if 0
		2562	static void
		2563	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2564	{
		2565	ev_idle_stop (EV_A_ idle);
		2566	}
		2567	#endif
2194		2568
2195	void	2569	void
2196	ev_embed_start (EV_P_ ev_embed *w)	2570	ev_embed_start (EV_P_ ev_embed *w)
2197	{	2571	{
2198	if (expect_false (ev_is_active (w)))	2572	if (expect_false (ev_is_active (w)))
2199	return;	2573	return;
2200		2574
2201	{	2575	{
2202	struct ev_loop *loop = w->loop;	2576	struct ev_loop *loop = w->other;
2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2577	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2578	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2205	}	2579	}
2206		2580
2207	ev_set_priority (&w->io, ev_priority (w));	2581	ev_set_priority (&w->io, ev_priority (w));
2208	ev_io_start (EV_A_ &w->io);	2582	ev_io_start (EV_A_ &w->io);
		2583
		2584	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2585	ev_set_priority (&w->prepare, EV_MINPRI);
		2586	ev_prepare_start (EV_A_ &w->prepare);
		2587
		2588	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2209		2589
2210	ev_start (EV_A_ (W)w, 1);	2590	ev_start (EV_A_ (W)w, 1);
2211	}	2591	}
2212		2592
2213	void	2593	void
…		…
2216	clear_pending (EV_A_ (W)w);	2596	clear_pending (EV_A_ (W)w);
2217	if (expect_false (!ev_is_active (w)))	2597	if (expect_false (!ev_is_active (w)))
2218	return;	2598	return;
2219		2599
2220	ev_io_stop (EV_A_ &w->io);	2600	ev_io_stop (EV_A_ &w->io);
		2601	ev_prepare_stop (EV_A_ &w->prepare);
2221		2602
2222	ev_stop (EV_A_ (W)w);	2603	ev_stop (EV_A_ (W)w);
2223	}	2604	}
2224	#endif	2605	#endif
2225		2606
…		…
2241	clear_pending (EV_A_ (W)w);	2622	clear_pending (EV_A_ (W)w);
2242	if (expect_false (!ev_is_active (w)))	2623	if (expect_false (!ev_is_active (w)))
2243	return;	2624	return;
2244		2625
2245	{	2626	{
2246	int active = ((W)w)->active;	2627	int active = ev_active (w);
		2628
2247	forks [active - 1] = forks [--forkcnt];	2629	forks [active - 1] = forks [--forkcnt];
2248	((W)forks [active - 1])->active = active;	2630	ev_active (forks [active - 1]) = active;
2249	}	2631	}
2250		2632
2251	ev_stop (EV_A_ (W)w);	2633	ev_stop (EV_A_ (W)w);
		2634	}
		2635	#endif
		2636
		2637	#if EV_ASYNC_ENABLE
		2638	void
		2639	ev_async_start (EV_P_ ev_async *w)
		2640	{
		2641	if (expect_false (ev_is_active (w)))
		2642	return;
		2643
		2644	evpipe_init (EV_A);
		2645
		2646	ev_start (EV_A_ (W)w, ++asynccnt);
		2647	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2648	asyncs [asynccnt - 1] = w;
		2649	}
		2650
		2651	void
		2652	ev_async_stop (EV_P_ ev_async *w)
		2653	{
		2654	clear_pending (EV_A_ (W)w);
		2655	if (expect_false (!ev_is_active (w)))
		2656	return;
		2657
		2658	{
		2659	int active = ev_active (w);
		2660
		2661	asyncs [active - 1] = asyncs [--asynccnt];
		2662	ev_active (asyncs [active - 1]) = active;
		2663	}
		2664
		2665	ev_stop (EV_A_ (W)w);
		2666	}
		2667
		2668	void
		2669	ev_async_send (EV_P_ ev_async *w)
		2670	{
		2671	w->sent = 1;
		2672	evpipe_write (EV_A_ &gotasync);
2252	}	2673	}
2253	#endif	2674	#endif
2254		2675
2255	/*****************************************************************************/	2676	/*****************************************************************************/
2256		2677
…		…
2314	ev_timer_set (&once->to, timeout, 0.);	2735	ev_timer_set (&once->to, timeout, 0.);
2315	ev_timer_start (EV_A_ &once->to);	2736	ev_timer_start (EV_A_ &once->to);
2316	}	2737	}
2317	}	2738	}
2318		2739
		2740	#if EV_MULTIPLICITY
		2741	#include "ev_wrap.h"
		2742	#endif
		2743
2319	#ifdef __cplusplus	2744	#ifdef __cplusplus
2320	}	2745	}
2321	#endif	2746	#endif
2322		2747

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