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Comparing libev/ev.c (file contents):
Revision 1.188 by root, Thu Dec 20 07:12:57 2007 UTC vs.
Revision 1.255 by root, Mon Jun 9 14:11:30 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
		169	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		170	# define EV_USE_MONOTONIC 1
		171	# else
144	# define EV_USE_MONOTONIC 0	172	# define EV_USE_MONOTONIC 0
		173	# endif
145	#endif	174	#endif
146		175
147	#ifndef EV_USE_REALTIME	176	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	177	# define EV_USE_REALTIME 0
		178	#endif
		179
		180	#ifndef EV_USE_NANOSLEEP
		181	# if _POSIX_C_SOURCE >= 199309L
		182	# define EV_USE_NANOSLEEP 1
		183	# else
		184	# define EV_USE_NANOSLEEP 0
		185	# endif
149	#endif	186	#endif
150		187
151	#ifndef EV_USE_SELECT	188	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	189	# define EV_USE_SELECT 1
153	#endif	190	#endif
…		…
159	# define EV_USE_POLL 1	196	# define EV_USE_POLL 1
160	# endif	197	# endif
161	#endif	198	#endif
162		199
163	#ifndef EV_USE_EPOLL	200	#ifndef EV_USE_EPOLL
		201	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		202	# define EV_USE_EPOLL 1
		203	# else
164	# define EV_USE_EPOLL 0	204	# define EV_USE_EPOLL 0
		205	# endif
165	#endif	206	#endif
166		207
167	#ifndef EV_USE_KQUEUE	208	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	209	# define EV_USE_KQUEUE 0
169	#endif	210	#endif
…		…
171	#ifndef EV_USE_PORT	212	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	213	# define EV_USE_PORT 0
173	#endif	214	#endif
174		215
175	#ifndef EV_USE_INOTIFY	216	#ifndef EV_USE_INOTIFY
		217	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		218	# define EV_USE_INOTIFY 1
		219	# else
176	# define EV_USE_INOTIFY 0	220	# define EV_USE_INOTIFY 0
		221	# endif
177	#endif	222	#endif
178		223
179	#ifndef EV_PID_HASHSIZE	224	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	225	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	226	# define EV_PID_HASHSIZE 1
…		…
190	# else	235	# else
191	# define EV_INOTIFY_HASHSIZE 16	236	# define EV_INOTIFY_HASHSIZE 16
192	# endif	237	# endif
193	#endif	238	#endif
194		239
195	/**/	240	#ifndef EV_USE_EVENTFD
		241	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		242	# define EV_USE_EVENTFD 1
		243	# else
		244	# define EV_USE_EVENTFD 0
		245	# endif
		246	#endif
		247
		248	#if 0 /* debugging */
		249	# define EV_VERIFY 3
		250	# define EV_USE_4HEAP 1
		251	# define EV_HEAP_CACHE_AT 1
		252	#endif
		253
		254	#ifndef EV_VERIFY
		255	# define EV_VERIFY !EV_MINIMAL
		256	#endif
		257
		258	#ifndef EV_USE_4HEAP
		259	# define EV_USE_4HEAP !EV_MINIMAL
		260	#endif
		261
		262	#ifndef EV_HEAP_CACHE_AT
		263	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		264	#endif
		265
		266	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		267
197	#ifndef CLOCK_MONOTONIC	268	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	269	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	270	# define EV_USE_MONOTONIC 0
200	#endif	271	#endif
…		…
207	#if !EV_STAT_ENABLE	278	#if !EV_STAT_ENABLE
208	# undef EV_USE_INOTIFY	279	# undef EV_USE_INOTIFY
209	# define EV_USE_INOTIFY 0	280	# define EV_USE_INOTIFY 0
210	#endif	281	#endif
211		282
		283	#if !EV_USE_NANOSLEEP
		284	# ifndef _WIN32
		285	# include <sys/select.h>
		286	# endif
		287	#endif
		288
212	#if EV_USE_INOTIFY	289	#if EV_USE_INOTIFY
213	# include <sys/inotify.h>	290	# include <sys/inotify.h>
214	#endif	291	#endif
215		292
216	#if EV_SELECT_IS_WINSOCKET	293	#if EV_SELECT_IS_WINSOCKET
217	# include <winsock.h>	294	# include <winsock.h>
218	#endif	295	#endif
219		296
		297	#if EV_USE_EVENTFD
		298	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		299	# include <stdint.h>
		300	# ifdef __cplusplus
		301	extern "C" {
		302	# endif
		303	int eventfd (unsigned int initval, int flags);
		304	# ifdef __cplusplus
		305	}
		306	# endif
		307	#endif
		308
220	/**/	309	/**/
		310
		311	#if EV_VERIFY >= 3
		312	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		313	#else
		314	# define EV_FREQUENT_CHECK do { } while (0)
		315	#endif
221		316
222	/*	317	/*
223	* This is used to avoid floating point rounding problems.	318	* This is used to avoid floating point rounding problems.
224	* It is added to ev_rt_now when scheduling periodics	319	* It is added to ev_rt_now when scheduling periodics
225	* to ensure progress, time-wise, even when rounding	320	* to ensure progress, time-wise, even when rounding
…		…
237	# define expect(expr,value) __builtin_expect ((expr),(value))	332	# define expect(expr,value) __builtin_expect ((expr),(value))
238	# define noinline __attribute__ ((noinline))	333	# define noinline __attribute__ ((noinline))
239	#else	334	#else
240	# define expect(expr,value) (expr)	335	# define expect(expr,value) (expr)
241	# define noinline	336	# define noinline
242	# if __STDC_VERSION__ < 199901L	337	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243	# define inline	338	# define inline
244	# endif	339	# endif
245	#endif	340	#endif
246		341
247	#define expect_false(expr) expect ((expr) != 0, 0)	342	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
262		357
263	typedef ev_watcher *W;	358	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	359	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	360	typedef ev_watcher_time *WT;
266		361
		362	#define ev_active(w) ((W)(w))->active
		363	#define ev_at(w) ((WT)(w))->at
		364
		365	#if EV_USE_MONOTONIC
		366	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		367	/* giving it a reasonably high chance of working on typical architetcures */
267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	368	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		369	#endif
268		370
269	#ifdef _WIN32	371	#ifdef _WIN32
270	# include "ev_win32.c"	372	# include "ev_win32.c"
271	#endif	373	#endif
272		374
…		…
293	perror (msg);	395	perror (msg);
294	abort ();	396	abort ();
295	}	397	}
296	}	398	}
297		399
		400	static void *
		401	ev_realloc_emul (void *ptr, long size)
		402	{
		403	/* some systems, notably openbsd and darwin, fail to properly
		404	* implement realloc (x, 0) (as required by both ansi c-98 and
		405	* the single unix specification, so work around them here.
		406	*/
		407
		408	if (size)
		409	return realloc (ptr, size);
		410
		411	free (ptr);
		412	return 0;
		413	}
		414
298	static void *(*alloc)(void *ptr, long size);	415	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
299		416
300	void	417	void
301	ev_set_allocator (void *(*cb)(void *ptr, long size))	418	ev_set_allocator (void *(*cb)(void *ptr, long size))
302	{	419	{
303	alloc = cb;	420	alloc = cb;
304	}	421	}
305		422
306	inline_speed void *	423	inline_speed void *
307	ev_realloc (void *ptr, long size)	424	ev_realloc (void *ptr, long size)
308	{	425	{
309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	426	ptr = alloc (ptr, size);
310		427
311	if (!ptr && size)	428	if (!ptr && size)
312	{	429	{
313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	430	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314	abort ();	431	abort ();
…		…
337	W w;	454	W w;
338	int events;	455	int events;
339	} ANPENDING;	456	} ANPENDING;
340		457
341	#if EV_USE_INOTIFY	458	#if EV_USE_INOTIFY
		459	/* hash table entry per inotify-id */
342	typedef struct	460	typedef struct
343	{	461	{
344	WL head;	462	WL head;
345	} ANFS;	463	} ANFS;
		464	#endif
		465
		466	/* Heap Entry */
		467	#if EV_HEAP_CACHE_AT
		468	typedef struct {
		469	ev_tstamp at;
		470	WT w;
		471	} ANHE;
		472
		473	#define ANHE_w(he) (he).w /* access watcher, read-write */
		474	#define ANHE_at(he) (he).at /* access cached at, read-only */
		475	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		476	#else
		477	typedef WT ANHE;
		478
		479	#define ANHE_w(he) (he)
		480	#define ANHE_at(he) (he)->at
		481	#define ANHE_at_cache(he)
346	#endif	482	#endif
347		483
348	#if EV_MULTIPLICITY	484	#if EV_MULTIPLICITY
349		485
350	struct ev_loop	486	struct ev_loop
…		…
408	{	544	{
409	return ev_rt_now;	545	return ev_rt_now;
410	}	546	}
411	#endif	547	#endif
412		548
		549	void
		550	ev_sleep (ev_tstamp delay)
		551	{
		552	if (delay > 0.)
		553	{
		554	#if EV_USE_NANOSLEEP
		555	struct timespec ts;
		556
		557	ts.tv_sec = (time_t)delay;
		558	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		559
		560	nanosleep (&ts, 0);
		561	#elif defined(_WIN32)
		562	Sleep ((unsigned long)(delay * 1e3));
		563	#else
		564	struct timeval tv;
		565
		566	tv.tv_sec = (time_t)delay;
		567	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		568
		569	select (0, 0, 0, 0, &tv);
		570	#endif
		571	}
		572	}
		573
		574	/*****************************************************************************/
		575
		576	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		577
413	int inline_size	578	int inline_size
414	array_nextsize (int elem, int cur, int cnt)	579	array_nextsize (int elem, int cur, int cnt)
415	{	580	{
416	int ncur = cur + 1;	581	int ncur = cur + 1;
417		582
418	do	583	do
419	ncur <<= 1;	584	ncur <<= 1;
420	while (cnt > ncur);	585	while (cnt > ncur);
421		586
422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	587	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423	if (elem * ncur > 4096)	588	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
424	{	589	{
425	ncur *= elem;	590	ncur *= elem;
426	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	591	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
427	ncur = ncur - sizeof (void *) * 4;	592	ncur = ncur - sizeof (void *) * 4;
428	ncur /= elem;	593	ncur /= elem;
429	}	594	}
430		595
431	return ncur;	596	return ncur;
…		…
542	events |= (unsigned char)w->events;	707	events |= (unsigned char)w->events;
543		708
544	#if EV_SELECT_IS_WINSOCKET	709	#if EV_SELECT_IS_WINSOCKET
545	if (events)	710	if (events)
546	{	711	{
547	unsigned long argp;	712	unsigned long arg;
		713	#ifdef EV_FD_TO_WIN32_HANDLE
		714	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		715	#else
548	anfd->handle = _get_osfhandle (fd);	716	anfd->handle = _get_osfhandle (fd);
		717	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	718	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
550	}	719	}
551	#endif	720	#endif
552		721
553	{	722	{
554	unsigned char o_events = anfd->events;	723	unsigned char o_events = anfd->events;
…		…
607	{	776	{
608	int fd;	777	int fd;
609		778
610	for (fd = 0; fd < anfdmax; ++fd)	779	for (fd = 0; fd < anfdmax; ++fd)
611	if (anfds [fd].events)	780	if (anfds [fd].events)
612	if (!fd_valid (fd) == -1 && errno == EBADF)	781	if (!fd_valid (fd) && errno == EBADF)
613	fd_kill (EV_A_ fd);	782	fd_kill (EV_A_ fd);
614	}	783	}
615		784
616	/* called on ENOMEM in select/poll to kill some fds and retry */	785	/* called on ENOMEM in select/poll to kill some fds and retry */
617	static void noinline	786	static void noinline
…		…
641	}	810	}
642	}	811	}
643		812
644	/*****************************************************************************/	813	/*****************************************************************************/
645		814
		815	/*
		816	* the heap functions want a real array index. array index 0 uis guaranteed to not
		817	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		818	* the branching factor of the d-tree.
		819	*/
		820
		821	/*
		822	* at the moment we allow libev the luxury of two heaps,
		823	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		824	* which is more cache-efficient.
		825	* the difference is about 5% with 50000+ watchers.
		826	*/
		827	#if EV_USE_4HEAP
		828
		829	#define DHEAP 4
		830	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		831	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		832	#define UPHEAP_DONE(p,k) ((p) == (k))
		833
		834	/* away from the root */
646	void inline_speed	835	void inline_speed
647	upheap (WT *heap, int k)	836	downheap (ANHE *heap, int N, int k)
648	{	837	{
649	WT w = heap [k];	838	ANHE he = heap [k];
		839	ANHE *E = heap + N + HEAP0;
650		840
651	while (k)	841	for (;;)
652	{	842	{
653	int p = (k - 1) >> 1;	843	ev_tstamp minat;
		844	ANHE *minpos;
		845	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
654		846
655	if (heap [p]->at <= w->at)	847	/* find minimum child */
		848	if (expect_true (pos + DHEAP - 1 < E))
		849	{
		850	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		851	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		852	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		853	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		854	}
		855	else if (pos < E)
		856	{
		857	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		858	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		859	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		860	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		861	}
		862	else
656	break;	863	break;
657		864
		865	if (ANHE_at (he) <= minat)
		866	break;
		867
		868	heap [k] = *minpos;
		869	ev_active (ANHE_w (*minpos)) = k;
		870
		871	k = minpos - heap;
		872	}
		873
		874	heap [k] = he;
		875	ev_active (ANHE_w (he)) = k;
		876	}
		877
		878	#else /* 4HEAP */
		879
		880	#define HEAP0 1
		881	#define HPARENT(k) ((k) >> 1)
		882	#define UPHEAP_DONE(p,k) (!(p))
		883
		884	/* away from the root */
		885	void inline_speed
		886	downheap (ANHE *heap, int N, int k)
		887	{
		888	ANHE he = heap [k];
		889
		890	for (;;)
		891	{
		892	int c = k << 1;
		893
		894	if (c > N + HEAP0 - 1)
		895	break;
		896
		897	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		898	? 1 : 0;
		899
		900	if (ANHE_at (he) <= ANHE_at (heap [c]))
		901	break;
		902
		903	heap [k] = heap [c];
		904	ev_active (ANHE_w (heap [k])) = k;
		905
		906	k = c;
		907	}
		908
		909	heap [k] = he;
		910	ev_active (ANHE_w (he)) = k;
		911	}
		912	#endif
		913
		914	/* towards the root */
		915	void inline_speed
		916	upheap (ANHE *heap, int k)
		917	{
		918	ANHE he = heap [k];
		919
		920	for (;;)
		921	{
		922	int p = HPARENT (k);
		923
		924	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		925	break;
		926
658	heap [k] = heap [p];	927	heap [k] = heap [p];
659	((W)heap [k])->active = k + 1;	928	ev_active (ANHE_w (heap [k])) = k;
660	k = p;	929	k = p;
661	}	930	}
662		931
663	heap [k] = w;	932	heap [k] = he;
664	((W)heap [k])->active = k + 1;	933	ev_active (ANHE_w (he)) = k;
665	}
666
667	void inline_speed
668	downheap (WT *heap, int N, int k)
669	{
670	WT w = heap [k];
671
672	for (;;)
673	{
674	int c = (k << 1) + 1;
675
676	if (c >= N)
677	break;
678
679	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
680	? 1 : 0;
681
682	if (w->at <= heap [c]->at)
683	break;
684
685	heap [k] = heap [c];
686	((W)heap [k])->active = k + 1;
687
688	k = c;
689	}
690
691	heap [k] = w;
692	((W)heap [k])->active = k + 1;
693	}	934	}
694		935
695	void inline_size	936	void inline_size
696	adjustheap (WT *heap, int N, int k)	937	adjustheap (ANHE *heap, int N, int k)
697	{	938	{
		939	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
698	upheap (heap, k);	940	upheap (heap, k);
		941	else
699	downheap (heap, N, k);	942	downheap (heap, N, k);
		943	}
		944
		945	/* rebuild the heap: this function is used only once and executed rarely */
		946	void inline_size
		947	reheap (ANHE *heap, int N)
		948	{
		949	int i;
		950
		951	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		952	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		953	for (i = 0; i < N; ++i)
		954	upheap (heap, i + HEAP0);
700	}	955	}
701		956
702	/*****************************************************************************/	957	/*****************************************************************************/
703		958
704	typedef struct	959	typedef struct
705	{	960	{
706	WL head;	961	WL head;
707	sig_atomic_t volatile gotsig;	962	EV_ATOMIC_T gotsig;
708	} ANSIG;	963	} ANSIG;
709		964
710	static ANSIG *signals;	965	static ANSIG *signals;
711	static int signalmax;	966	static int signalmax;
712		967
713	static int sigpipe [2];	968	static EV_ATOMIC_T gotsig;
714	static sig_atomic_t volatile gotsig;
715	static ev_io sigev;
716		969
717	void inline_size	970	void inline_size
718	signals_init (ANSIG *base, int count)	971	signals_init (ANSIG *base, int count)
719	{	972	{
720	while (count--)	973	while (count--)
…		…
724		977
725	++base;	978	++base;
726	}	979	}
727	}	980	}
728		981
729	static void	982	/*****************************************************************************/
730	sighandler (int signum)
731	{
732	#if _WIN32
733	signal (signum, sighandler);
734	#endif
735
736	signals [signum - 1].gotsig = 1;
737
738	if (!gotsig)
739	{
740	int old_errno = errno;
741	gotsig = 1;
742	write (sigpipe [1], &signum, 1);
743	errno = old_errno;
744	}
745	}
746
747	void noinline
748	ev_feed_signal_event (EV_P_ int signum)
749	{
750	WL w;
751
752	#if EV_MULTIPLICITY
753	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
754	#endif
755
756	--signum;
757
758	if (signum < 0 || signum >= signalmax)
759	return;
760
761	signals [signum].gotsig = 0;
762
763	for (w = signals [signum].head; w; w = w->next)
764	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
765	}
766
767	static void
768	sigcb (EV_P_ ev_io *iow, int revents)
769	{
770	int signum;
771
772	read (sigpipe [0], &revents, 1);
773	gotsig = 0;
774
775	for (signum = signalmax; signum--; )
776	if (signals [signum].gotsig)
777	ev_feed_signal_event (EV_A_ signum + 1);
778	}
779		983
780	void inline_speed	984	void inline_speed
781	fd_intern (int fd)	985	fd_intern (int fd)
782	{	986	{
783	#ifdef _WIN32	987	#ifdef _WIN32
784	int arg = 1;	988	unsigned long arg = 1;
785	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	989	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
786	#else	990	#else
787	fcntl (fd, F_SETFD, FD_CLOEXEC);	991	fcntl (fd, F_SETFD, FD_CLOEXEC);
788	fcntl (fd, F_SETFL, O_NONBLOCK);	992	fcntl (fd, F_SETFL, O_NONBLOCK);
789	#endif	993	#endif
790	}	994	}
791		995
792	static void noinline	996	static void noinline
793	siginit (EV_P)	997	evpipe_init (EV_P)
794	{	998	{
		999	if (!ev_is_active (&pipeev))
		1000	{
		1001	#if EV_USE_EVENTFD
		1002	if ((evfd = eventfd (0, 0)) >= 0)
		1003	{
		1004	evpipe [0] = -1;
		1005	fd_intern (evfd);
		1006	ev_io_set (&pipeev, evfd, EV_READ);
		1007	}
		1008	else
		1009	#endif
		1010	{
		1011	while (pipe (evpipe))
		1012	syserr ("(libev) error creating signal/async pipe");
		1013
795	fd_intern (sigpipe [0]);	1014	fd_intern (evpipe [0]);
796	fd_intern (sigpipe [1]);	1015	fd_intern (evpipe [1]);
		1016	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1017	}
797		1018
798	ev_io_set (&sigev, sigpipe [0], EV_READ);
799	ev_io_start (EV_A_ &sigev);	1019	ev_io_start (EV_A_ &pipeev);
800	ev_unref (EV_A); /* child watcher should not keep loop alive */	1020	ev_unref (EV_A); /* watcher should not keep loop alive */
		1021	}
		1022	}
		1023
		1024	void inline_size
		1025	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1026	{
		1027	if (!*flag)
		1028	{
		1029	int old_errno = errno; /* save errno because write might clobber it */
		1030
		1031	*flag = 1;
		1032
		1033	#if EV_USE_EVENTFD
		1034	if (evfd >= 0)
		1035	{
		1036	uint64_t counter = 1;
		1037	write (evfd, &counter, sizeof (uint64_t));
		1038	}
		1039	else
		1040	#endif
		1041	write (evpipe [1], &old_errno, 1);
		1042
		1043	errno = old_errno;
		1044	}
		1045	}
		1046
		1047	static void
		1048	pipecb (EV_P_ ev_io *iow, int revents)
		1049	{
		1050	#if EV_USE_EVENTFD
		1051	if (evfd >= 0)
		1052	{
		1053	uint64_t counter;
		1054	read (evfd, &counter, sizeof (uint64_t));
		1055	}
		1056	else
		1057	#endif
		1058	{
		1059	char dummy;
		1060	read (evpipe [0], &dummy, 1);
		1061	}
		1062
		1063	if (gotsig && ev_is_default_loop (EV_A))
		1064	{
		1065	int signum;
		1066	gotsig = 0;
		1067
		1068	for (signum = signalmax; signum--; )
		1069	if (signals [signum].gotsig)
		1070	ev_feed_signal_event (EV_A_ signum + 1);
		1071	}
		1072
		1073	#if EV_ASYNC_ENABLE
		1074	if (gotasync)
		1075	{
		1076	int i;
		1077	gotasync = 0;
		1078
		1079	for (i = asynccnt; i--; )
		1080	if (asyncs [i]->sent)
		1081	{
		1082	asyncs [i]->sent = 0;
		1083	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1084	}
		1085	}
		1086	#endif
801	}	1087	}
802		1088
803	/*****************************************************************************/	1089	/*****************************************************************************/
804		1090
		1091	static void
		1092	ev_sighandler (int signum)
		1093	{
		1094	#if EV_MULTIPLICITY
		1095	struct ev_loop *loop = &default_loop_struct;
		1096	#endif
		1097
		1098	#if _WIN32
		1099	signal (signum, ev_sighandler);
		1100	#endif
		1101
		1102	signals [signum - 1].gotsig = 1;
		1103	evpipe_write (EV_A_ &gotsig);
		1104	}
		1105
		1106	void noinline
		1107	ev_feed_signal_event (EV_P_ int signum)
		1108	{
		1109	WL w;
		1110
		1111	#if EV_MULTIPLICITY
		1112	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1113	#endif
		1114
		1115	--signum;
		1116
		1117	if (signum < 0 || signum >= signalmax)
		1118	return;
		1119
		1120	signals [signum].gotsig = 0;
		1121
		1122	for (w = signals [signum].head; w; w = w->next)
		1123	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1124	}
		1125
		1126	/*****************************************************************************/
		1127
805	static WL childs [EV_PID_HASHSIZE];	1128	static WL childs [EV_PID_HASHSIZE];
806		1129
807	#ifndef _WIN32	1130	#ifndef _WIN32
808		1131
809	static ev_signal childev;	1132	static ev_signal childev;
810		1133
		1134	#ifndef WIFCONTINUED
		1135	# define WIFCONTINUED(status) 0
		1136	#endif
		1137
811	void inline_speed	1138	void inline_speed
812	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1139	child_reap (EV_P_ int chain, int pid, int status)
813	{	1140	{
814	ev_child *w;	1141	ev_child *w;
		1142	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
815		1143
816	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1144	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1145	{
817	if (w->pid == pid || !w->pid)	1146	if ((w->pid == pid || !w->pid)
		1147	&& (!traced || (w->flags & 1)))
818	{	1148	{
819	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1149	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
820	w->rpid = pid;	1150	w->rpid = pid;
821	w->rstatus = status;	1151	w->rstatus = status;
822	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1152	ev_feed_event (EV_A_ (W)w, EV_CHILD);
823	}	1153	}
		1154	}
824	}	1155	}
825		1156
826	#ifndef WCONTINUED	1157	#ifndef WCONTINUED
827	# define WCONTINUED 0	1158	# define WCONTINUED 0
828	#endif	1159	#endif
…		…
837	if (!WCONTINUED	1168	if (!WCONTINUED
838	|| errno != EINVAL	1169	|| errno != EINVAL
839	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1170	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
840	return;	1171	return;
841		1172
842	/* make sure we are called again until all childs have been reaped */	1173	/* make sure we are called again until all children have been reaped */
843	/* we need to do it this way so that the callback gets called before we continue */	1174	/* we need to do it this way so that the callback gets called before we continue */
844	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1175	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
845		1176
846	child_reap (EV_A_ sw, pid, pid, status);	1177	child_reap (EV_A_ pid, pid, status);
847	if (EV_PID_HASHSIZE > 1)	1178	if (EV_PID_HASHSIZE > 1)
848	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1179	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
849	}	1180	}
850		1181
851	#endif	1182	#endif
852		1183
853	/*****************************************************************************/	1184	/*****************************************************************************/
…		…
925	}	1256	}
926		1257
927	unsigned int	1258	unsigned int
928	ev_embeddable_backends (void)	1259	ev_embeddable_backends (void)
929	{	1260	{
930	return EVBACKEND_EPOLL	1261	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
931	| EVBACKEND_KQUEUE	1262
932	| EVBACKEND_PORT;	1263	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1264	/* please fix it and tell me how to detect the fix */
		1265	flags &= ~EVBACKEND_EPOLL;
		1266
		1267	return flags;
933	}	1268	}
934		1269
935	unsigned int	1270	unsigned int
936	ev_backend (EV_P)	1271	ev_backend (EV_P)
937	{	1272	{
…		…
940		1275
941	unsigned int	1276	unsigned int
942	ev_loop_count (EV_P)	1277	ev_loop_count (EV_P)
943	{	1278	{
944	return loop_count;	1279	return loop_count;
		1280	}
		1281
		1282	void
		1283	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1284	{
		1285	io_blocktime = interval;
		1286	}
		1287
		1288	void
		1289	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1290	{
		1291	timeout_blocktime = interval;
945	}	1292	}
946		1293
947	static void noinline	1294	static void noinline
948	loop_init (EV_P_ unsigned int flags)	1295	loop_init (EV_P_ unsigned int flags)
949	{	1296	{
…		…
955	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
956	have_monotonic = 1;	1303	have_monotonic = 1;
957	}	1304	}
958	#endif	1305	#endif
959		1306
960	ev_rt_now = ev_time ();	1307	ev_rt_now = ev_time ();
961	mn_now = get_clock ();	1308	mn_now = get_clock ();
962	now_floor = mn_now;	1309	now_floor = mn_now;
963	rtmn_diff = ev_rt_now - mn_now;	1310	rtmn_diff = ev_rt_now - mn_now;
		1311
		1312	io_blocktime = 0.;
		1313	timeout_blocktime = 0.;
		1314	backend = 0;
		1315	backend_fd = -1;
		1316	gotasync = 0;
		1317	#if EV_USE_INOTIFY
		1318	fs_fd = -2;
		1319	#endif
964		1320
965	/* pid check not overridable via env */	1321	/* pid check not overridable via env */
966	#ifndef _WIN32	1322	#ifndef _WIN32
967	if (flags & EVFLAG_FORKCHECK)	1323	if (flags & EVFLAG_FORKCHECK)
968	curpid = getpid ();	1324	curpid = getpid ();
…		…
971	if (!(flags & EVFLAG_NOENV)	1327	if (!(flags & EVFLAG_NOENV)
972	&& !enable_secure ()	1328	&& !enable_secure ()
973	&& getenv ("LIBEV_FLAGS"))	1329	&& getenv ("LIBEV_FLAGS"))
974	flags = atoi (getenv ("LIBEV_FLAGS"));	1330	flags = atoi (getenv ("LIBEV_FLAGS"));
975		1331
976	if (!(flags & 0x0000ffffUL))	1332	if (!(flags & 0x0000ffffU))
977	flags |= ev_recommended_backends ();	1333	flags |= ev_recommended_backends ();
978
979	backend = 0;
980	backend_fd = -1;
981	#if EV_USE_INOTIFY
982	fs_fd = -2;
983	#endif
984		1334
985	#if EV_USE_PORT	1335	#if EV_USE_PORT
986	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1336	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
987	#endif	1337	#endif
988	#if EV_USE_KQUEUE	1338	#if EV_USE_KQUEUE
…		…
996	#endif	1346	#endif
997	#if EV_USE_SELECT	1347	#if EV_USE_SELECT
998	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1348	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
999	#endif	1349	#endif
1000		1350
1001	ev_init (&sigev, sigcb);	1351	ev_init (&pipeev, pipecb);
1002	ev_set_priority (&sigev, EV_MAXPRI);	1352	ev_set_priority (&pipeev, EV_MAXPRI);
1003	}	1353	}
1004	}	1354	}
1005		1355
1006	static void noinline	1356	static void noinline
1007	loop_destroy (EV_P)	1357	loop_destroy (EV_P)
1008	{	1358	{
1009	int i;	1359	int i;
		1360
		1361	if (ev_is_active (&pipeev))
		1362	{
		1363	ev_ref (EV_A); /* signal watcher */
		1364	ev_io_stop (EV_A_ &pipeev);
		1365
		1366	#if EV_USE_EVENTFD
		1367	if (evfd >= 0)
		1368	close (evfd);
		1369	#endif
		1370
		1371	if (evpipe [0] >= 0)
		1372	{
		1373	close (evpipe [0]);
		1374	close (evpipe [1]);
		1375	}
		1376	}
1010		1377
1011	#if EV_USE_INOTIFY	1378	#if EV_USE_INOTIFY
1012	if (fs_fd >= 0)	1379	if (fs_fd >= 0)
1013	close (fs_fd);	1380	close (fs_fd);
1014	#endif	1381	#endif
…		…
1051	#if EV_FORK_ENABLE	1418	#if EV_FORK_ENABLE
1052	array_free (fork, EMPTY);	1419	array_free (fork, EMPTY);
1053	#endif	1420	#endif
1054	array_free (prepare, EMPTY);	1421	array_free (prepare, EMPTY);
1055	array_free (check, EMPTY);	1422	array_free (check, EMPTY);
		1423	#if EV_ASYNC_ENABLE
		1424	array_free (async, EMPTY);
		1425	#endif
1056		1426
1057	backend = 0;	1427	backend = 0;
1058	}	1428	}
1059		1429
		1430	#if EV_USE_INOTIFY
1060	void inline_size infy_fork (EV_P);	1431	void inline_size infy_fork (EV_P);
		1432	#endif
1061		1433
1062	void inline_size	1434	void inline_size
1063	loop_fork (EV_P)	1435	loop_fork (EV_P)
1064	{	1436	{
1065	#if EV_USE_PORT	1437	#if EV_USE_PORT
…		…
1073	#endif	1445	#endif
1074	#if EV_USE_INOTIFY	1446	#if EV_USE_INOTIFY
1075	infy_fork (EV_A);	1447	infy_fork (EV_A);
1076	#endif	1448	#endif
1077		1449
1078	if (ev_is_active (&sigev))	1450	if (ev_is_active (&pipeev))
1079	{	1451	{
1080	/* default loop */	1452	/* this "locks" the handlers against writing to the pipe */
		1453	/* while we modify the fd vars */
		1454	gotsig = 1;
		1455	#if EV_ASYNC_ENABLE
		1456	gotasync = 1;
		1457	#endif
1081		1458
1082	ev_ref (EV_A);	1459	ev_ref (EV_A);
1083	ev_io_stop (EV_A_ &sigev);	1460	ev_io_stop (EV_A_ &pipeev);
		1461
		1462	#if EV_USE_EVENTFD
		1463	if (evfd >= 0)
		1464	close (evfd);
		1465	#endif
		1466
		1467	if (evpipe [0] >= 0)
		1468	{
1084	close (sigpipe [0]);	1469	close (evpipe [0]);
1085	close (sigpipe [1]);	1470	close (evpipe [1]);
		1471	}
1086		1472
1087	while (pipe (sigpipe))
1088	syserr ("(libev) error creating pipe");
1089
1090	siginit (EV_A);	1473	evpipe_init (EV_A);
		1474	/* now iterate over everything, in case we missed something */
		1475	pipecb (EV_A_ &pipeev, EV_READ);
1091	}	1476	}
1092		1477
1093	postfork = 0;	1478	postfork = 0;
1094	}	1479	}
1095		1480
1096	#if EV_MULTIPLICITY	1481	#if EV_MULTIPLICITY
		1482
1097	struct ev_loop *	1483	struct ev_loop *
1098	ev_loop_new (unsigned int flags)	1484	ev_loop_new (unsigned int flags)
1099	{	1485	{
1100	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1486	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1101		1487
…		…
1117	}	1503	}
1118		1504
1119	void	1505	void
1120	ev_loop_fork (EV_P)	1506	ev_loop_fork (EV_P)
1121	{	1507	{
1122	postfork = 1;	1508	postfork = 1; /* must be in line with ev_default_fork */
1123	}	1509	}
1124		1510
		1511	#if EV_VERIFY
		1512	void noinline
		1513	verify_watcher (EV_P_ W w)
		1514	{
		1515	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1516
		1517	if (w->pending)
		1518	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1519	}
		1520
		1521	static void noinline
		1522	verify_heap (EV_P_ ANHE *heap, int N)
		1523	{
		1524	int i;
		1525
		1526	for (i = HEAP0; i < N + HEAP0; ++i)
		1527	{
		1528	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1529	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1530	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1531
		1532	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1533	}
		1534	}
		1535
		1536	static void noinline
		1537	array_verify (EV_P_ W *ws, int cnt)
		1538	{
		1539	while (cnt--)
		1540	{
		1541	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1542	verify_watcher (EV_A_ ws [cnt]);
		1543	}
		1544	}
		1545	#endif
		1546
		1547	void
		1548	ev_loop_verify (EV_P)
		1549	{
		1550	#if EV_VERIFY
		1551	int i;
		1552	WL w;
		1553
		1554	assert (activecnt >= -1);
		1555
		1556	assert (fdchangemax >= fdchangecnt);
		1557	for (i = 0; i < fdchangecnt; ++i)
		1558	assert (("negative fd in fdchanges", fdchanges [i] >= 0));
		1559
		1560	assert (anfdmax >= 0);
		1561	for (i = 0; i < anfdmax; ++i)
		1562	for (w = anfds [i].head; w; w = w->next)
		1563	{
		1564	verify_watcher (EV_A_ (W)w);
		1565	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
		1566	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1567	}
		1568
		1569	assert (timermax >= timercnt);
		1570	verify_heap (EV_A_ timers, timercnt);
		1571
		1572	#if EV_PERIODIC_ENABLE
		1573	assert (periodicmax >= periodiccnt);
		1574	verify_heap (EV_A_ periodics, periodiccnt);
		1575	#endif
		1576
		1577	for (i = NUMPRI; i--; )
		1578	{
		1579	assert (pendingmax [i] >= pendingcnt [i]);
		1580	#if EV_IDLE_ENABLE
		1581	assert (idleall >= 0);
		1582	assert (idlemax [i] >= idlecnt [i]);
		1583	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1584	#endif
		1585	}
		1586
		1587	#if EV_FORK_ENABLE
		1588	assert (forkmax >= forkcnt);
		1589	array_verify (EV_A_ (W *)forks, forkcnt);
		1590	#endif
		1591
		1592	#if EV_ASYNC_ENABLE
		1593	assert (asyncmax >= asynccnt);
		1594	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1595	#endif
		1596
		1597	assert (preparemax >= preparecnt);
		1598	array_verify (EV_A_ (W *)prepares, preparecnt);
		1599
		1600	assert (checkmax >= checkcnt);
		1601	array_verify (EV_A_ (W *)checks, checkcnt);
		1602
		1603	# if 0
		1604	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1605	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1125	#endif	1606	# endif
		1607	#endif
		1608	}
		1609
		1610	#endif /* multiplicity */
1126		1611
1127	#if EV_MULTIPLICITY	1612	#if EV_MULTIPLICITY
1128	struct ev_loop *	1613	struct ev_loop *
1129	ev_default_loop_init (unsigned int flags)	1614	ev_default_loop_init (unsigned int flags)
1130	#else	1615	#else
1131	int	1616	int
1132	ev_default_loop (unsigned int flags)	1617	ev_default_loop (unsigned int flags)
1133	#endif	1618	#endif
1134	{	1619	{
1135	if (sigpipe [0] == sigpipe [1])
1136	if (pipe (sigpipe))
1137	return 0;
1138
1139	if (!ev_default_loop_ptr)	1620	if (!ev_default_loop_ptr)
1140	{	1621	{
1141	#if EV_MULTIPLICITY	1622	#if EV_MULTIPLICITY
1142	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1623	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1143	#else	1624	#else
…		…
1146		1627
1147	loop_init (EV_A_ flags);	1628	loop_init (EV_A_ flags);
1148		1629
1149	if (ev_backend (EV_A))	1630	if (ev_backend (EV_A))
1150	{	1631	{
1151	siginit (EV_A);
1152
1153	#ifndef _WIN32	1632	#ifndef _WIN32
1154	ev_signal_init (&childev, childcb, SIGCHLD);	1633	ev_signal_init (&childev, childcb, SIGCHLD);
1155	ev_set_priority (&childev, EV_MAXPRI);	1634	ev_set_priority (&childev, EV_MAXPRI);
1156	ev_signal_start (EV_A_ &childev);	1635	ev_signal_start (EV_A_ &childev);
1157	ev_unref (EV_A); /* child watcher should not keep loop alive */	1636	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1174	#ifndef _WIN32	1653	#ifndef _WIN32
1175	ev_ref (EV_A); /* child watcher */	1654	ev_ref (EV_A); /* child watcher */
1176	ev_signal_stop (EV_A_ &childev);	1655	ev_signal_stop (EV_A_ &childev);
1177	#endif	1656	#endif
1178		1657
1179	ev_ref (EV_A); /* signal watcher */
1180	ev_io_stop (EV_A_ &sigev);
1181
1182	close (sigpipe [0]); sigpipe [0] = 0;
1183	close (sigpipe [1]); sigpipe [1] = 0;
1184
1185	loop_destroy (EV_A);	1658	loop_destroy (EV_A);
1186	}	1659	}
1187		1660
1188	void	1661	void
1189	ev_default_fork (void)	1662	ev_default_fork (void)
…		…
1191	#if EV_MULTIPLICITY	1664	#if EV_MULTIPLICITY
1192	struct ev_loop *loop = ev_default_loop_ptr;	1665	struct ev_loop *loop = ev_default_loop_ptr;
1193	#endif	1666	#endif
1194		1667
1195	if (backend)	1668	if (backend)
1196	postfork = 1;	1669	postfork = 1; /* must be in line with ev_loop_fork */
1197	}	1670	}
1198		1671
1199	/*****************************************************************************/	1672	/*****************************************************************************/
1200		1673
1201	void	1674	void
…		…
1218	{	1691	{
1219	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1692	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1220		1693
1221	p->w->pending = 0;	1694	p->w->pending = 0;
1222	EV_CB_INVOKE (p->w, p->events);	1695	EV_CB_INVOKE (p->w, p->events);
		1696	EV_FREQUENT_CHECK;
1223	}	1697	}
1224	}	1698	}
1225	}	1699	}
1226
1227	void inline_size
1228	timers_reify (EV_P)
1229	{
1230	while (timercnt && ((WT)timers [0])->at <= mn_now)
1231	{
1232	ev_timer *w = (ev_timer *)timers [0];
1233
1234	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1235
1236	/* first reschedule or stop timer */
1237	if (w->repeat)
1238	{
1239	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1240
1241	((WT)w)->at += w->repeat;
1242	if (((WT)w)->at < mn_now)
1243	((WT)w)->at = mn_now;
1244
1245	downheap (timers, timercnt, 0);
1246	}
1247	else
1248	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1249
1250	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1251	}
1252	}
1253
1254	#if EV_PERIODIC_ENABLE
1255	void inline_size
1256	periodics_reify (EV_P)
1257	{
1258	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1259	{
1260	ev_periodic *w = (ev_periodic *)periodics [0];
1261
1262	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1263
1264	/* first reschedule or stop timer */
1265	if (w->reschedule_cb)
1266	{
1267	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1268	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1269	downheap (periodics, periodiccnt, 0);
1270	}
1271	else if (w->interval)
1272	{
1273	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1274	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1275	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1276	downheap (periodics, periodiccnt, 0);
1277	}
1278	else
1279	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1280
1281	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1282	}
1283	}
1284
1285	static void noinline
1286	periodics_reschedule (EV_P)
1287	{
1288	int i;
1289
1290	/* adjust periodics after time jump */
1291	for (i = 0; i < periodiccnt; ++i)
1292	{
1293	ev_periodic *w = (ev_periodic *)periodics [i];
1294
1295	if (w->reschedule_cb)
1296	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1297	else if (w->interval)
1298	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1299	}
1300
1301	/* now rebuild the heap */
1302	for (i = periodiccnt >> 1; i--; )
1303	downheap (periodics, periodiccnt, i);
1304	}
1305	#endif
1306		1700
1307	#if EV_IDLE_ENABLE	1701	#if EV_IDLE_ENABLE
1308	void inline_size	1702	void inline_size
1309	idle_reify (EV_P)	1703	idle_reify (EV_P)
1310	{	1704	{
…		…
1322	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1716	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1323	break;	1717	break;
1324	}	1718	}
1325	}	1719	}
1326	}	1720	}
		1721	}
		1722	#endif
		1723
		1724	void inline_size
		1725	timers_reify (EV_P)
		1726	{
		1727	EV_FREQUENT_CHECK;
		1728
		1729	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1730	{
		1731	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1732
		1733	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1734
		1735	/* first reschedule or stop timer */
		1736	if (w->repeat)
		1737	{
		1738	ev_at (w) += w->repeat;
		1739	if (ev_at (w) < mn_now)
		1740	ev_at (w) = mn_now;
		1741
		1742	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1743
		1744	ANHE_at_cache (timers [HEAP0]);
		1745	downheap (timers, timercnt, HEAP0);
		1746	}
		1747	else
		1748	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1749
		1750	EV_FREQUENT_CHECK;
		1751	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1752	}
		1753	}
		1754
		1755	#if EV_PERIODIC_ENABLE
		1756	void inline_size
		1757	periodics_reify (EV_P)
		1758	{
		1759	EV_FREQUENT_CHECK;
		1760
		1761	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1762	{
		1763	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1764
		1765	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1766
		1767	/* first reschedule or stop timer */
		1768	if (w->reschedule_cb)
		1769	{
		1770	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1771
		1772	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1773
		1774	ANHE_at_cache (periodics [HEAP0]);
		1775	downheap (periodics, periodiccnt, HEAP0);
		1776	}
		1777	else if (w->interval)
		1778	{
		1779	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1780	/* if next trigger time is not sufficiently in the future, put it there */
		1781	/* this might happen because of floating point inexactness */
		1782	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1783	{
		1784	ev_at (w) += w->interval;
		1785
		1786	/* if interval is unreasonably low we might still have a time in the past */
		1787	/* so correct this. this will make the periodic very inexact, but the user */
		1788	/* has effectively asked to get triggered more often than possible */
		1789	if (ev_at (w) < ev_rt_now)
		1790	ev_at (w) = ev_rt_now;
		1791	}
		1792
		1793	ANHE_at_cache (periodics [HEAP0]);
		1794	downheap (periodics, periodiccnt, HEAP0);
		1795	}
		1796	else
		1797	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1798
		1799	EV_FREQUENT_CHECK;
		1800	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1801	}
		1802	}
		1803
		1804	static void noinline
		1805	periodics_reschedule (EV_P)
		1806	{
		1807	int i;
		1808
		1809	/* adjust periodics after time jump */
		1810	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1811	{
		1812	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1813
		1814	if (w->reschedule_cb)
		1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1816	else if (w->interval)
		1817	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1818
		1819	ANHE_at_cache (periodics [i]);
		1820	}
		1821
		1822	reheap (periodics, periodiccnt);
1327	}	1823	}
1328	#endif	1824	#endif
1329		1825
1330	void inline_speed	1826	void inline_speed
1331	time_update (EV_P_ ev_tstamp max_block)	1827	time_update (EV_P_ ev_tstamp max_block)
…		…
1360	*/	1856	*/
1361	for (i = 4; --i; )	1857	for (i = 4; --i; )
1362	{	1858	{
1363	rtmn_diff = ev_rt_now - mn_now;	1859	rtmn_diff = ev_rt_now - mn_now;
1364		1860
1365	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1861	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1366	return; /* all is well */	1862	return; /* all is well */
1367		1863
1368	ev_rt_now = ev_time ();	1864	ev_rt_now = ev_time ();
1369	mn_now = get_clock ();	1865	mn_now = get_clock ();
1370	now_floor = mn_now;	1866	now_floor = mn_now;
…		…
1386	#if EV_PERIODIC_ENABLE	1882	#if EV_PERIODIC_ENABLE
1387	periodics_reschedule (EV_A);	1883	periodics_reschedule (EV_A);
1388	#endif	1884	#endif
1389	/* adjust timers. this is easy, as the offset is the same for all of them */	1885	/* adjust timers. this is easy, as the offset is the same for all of them */
1390	for (i = 0; i < timercnt; ++i)	1886	for (i = 0; i < timercnt; ++i)
		1887	{
		1888	ANHE *he = timers + i + HEAP0;
1391	((WT)timers [i])->at += ev_rt_now - mn_now;	1889	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1890	ANHE_at_cache (*he);
		1891	}
1392	}	1892	}
1393		1893
1394	mn_now = ev_rt_now;	1894	mn_now = ev_rt_now;
1395	}	1895	}
1396	}	1896	}
…		…
1410	static int loop_done;	1910	static int loop_done;
1411		1911
1412	void	1912	void
1413	ev_loop (EV_P_ int flags)	1913	ev_loop (EV_P_ int flags)
1414	{	1914	{
1415	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1915	loop_done = EVUNLOOP_CANCEL;
1416	? EVUNLOOP_ONE
1417	: EVUNLOOP_CANCEL;
1418		1916
1419	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1917	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1420		1918
1421	do	1919	do
1422	{	1920	{
		1921	#if EV_VERIFY >= 2
		1922	ev_loop_verify (EV_A);
		1923	#endif
		1924
1423	#ifndef _WIN32	1925	#ifndef _WIN32
1424	if (expect_false (curpid)) /* penalise the forking check even more */	1926	if (expect_false (curpid)) /* penalise the forking check even more */
1425	if (expect_false (getpid () != curpid))	1927	if (expect_false (getpid () != curpid))
1426	{	1928	{
1427	curpid = getpid ();	1929	curpid = getpid ();
…		…
1456	/* update fd-related kernel structures */	1958	/* update fd-related kernel structures */
1457	fd_reify (EV_A);	1959	fd_reify (EV_A);
1458		1960
1459	/* calculate blocking time */	1961	/* calculate blocking time */
1460	{	1962	{
1461	ev_tstamp block;	1963	ev_tstamp waittime = 0.;
		1964	ev_tstamp sleeptime = 0.;
1462		1965
1463	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1966	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1464	block = 0.; /* do not block at all */
1465	else
1466	{	1967	{
1467	/* update time to cancel out callback processing overhead */	1968	/* update time to cancel out callback processing overhead */
1468	time_update (EV_A_ 1e100);	1969	time_update (EV_A_ 1e100);
1469		1970
1470	block = MAX_BLOCKTIME;	1971	waittime = MAX_BLOCKTIME;
1471		1972
1472	if (timercnt)	1973	if (timercnt)
1473	{	1974	{
1474	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1975	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1475	if (block > to) block = to;	1976	if (waittime > to) waittime = to;
1476	}	1977	}
1477		1978
1478	#if EV_PERIODIC_ENABLE	1979	#if EV_PERIODIC_ENABLE
1479	if (periodiccnt)	1980	if (periodiccnt)
1480	{	1981	{
1481	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1982	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1482	if (block > to) block = to;	1983	if (waittime > to) waittime = to;
1483	}	1984	}
1484	#endif	1985	#endif
1485		1986
1486	if (expect_false (block < 0.)) block = 0.;	1987	if (expect_false (waittime < timeout_blocktime))
		1988	waittime = timeout_blocktime;
		1989
		1990	sleeptime = waittime - backend_fudge;
		1991
		1992	if (expect_true (sleeptime > io_blocktime))
		1993	sleeptime = io_blocktime;
		1994
		1995	if (sleeptime)
		1996	{
		1997	ev_sleep (sleeptime);
		1998	waittime -= sleeptime;
		1999	}
1487	}	2000	}
1488		2001
1489	++loop_count;	2002	++loop_count;
1490	backend_poll (EV_A_ block);	2003	backend_poll (EV_A_ waittime);
1491		2004
1492	/* update ev_rt_now, do magic */	2005	/* update ev_rt_now, do magic */
1493	time_update (EV_A_ block);	2006	time_update (EV_A_ waittime + sleeptime);
1494	}	2007	}
1495		2008
1496	/* queue pending timers and reschedule them */	2009	/* queue pending timers and reschedule them */
1497	timers_reify (EV_A); /* relative timers called last */	2010	timers_reify (EV_A); /* relative timers called last */
1498	#if EV_PERIODIC_ENABLE	2011	#if EV_PERIODIC_ENABLE
…		…
1507	/* queue check watchers, to be executed first */	2020	/* queue check watchers, to be executed first */
1508	if (expect_false (checkcnt))	2021	if (expect_false (checkcnt))
1509	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1510		2023
1511	call_pending (EV_A);	2024	call_pending (EV_A);
1512
1513	}	2025	}
1514	while (expect_true (activecnt && !loop_done));	2026	while (expect_true (
		2027	activecnt
		2028	&& !loop_done
		2029	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2030	));
1515		2031
1516	if (loop_done == EVUNLOOP_ONE)	2032	if (loop_done == EVUNLOOP_ONE)
1517	loop_done = EVUNLOOP_CANCEL;	2033	loop_done = EVUNLOOP_CANCEL;
1518	}	2034	}
1519		2035
…		…
1608	if (expect_false (ev_is_active (w)))	2124	if (expect_false (ev_is_active (w)))
1609	return;	2125	return;
1610		2126
1611	assert (("ev_io_start called with negative fd", fd >= 0));	2127	assert (("ev_io_start called with negative fd", fd >= 0));
1612		2128
		2129	EV_FREQUENT_CHECK;
		2130
1613	ev_start (EV_A_ (W)w, 1);	2131	ev_start (EV_A_ (W)w, 1);
1614	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2132	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1615	wlist_add (&anfds[fd].head, (WL)w);	2133	wlist_add (&anfds[fd].head, (WL)w);
1616		2134
1617	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2135	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1618	w->events &= ~EV_IOFDSET;	2136	w->events &= ~EV_IOFDSET;
		2137
		2138	EV_FREQUENT_CHECK;
1619	}	2139	}
1620		2140
1621	void noinline	2141	void noinline
1622	ev_io_stop (EV_P_ ev_io *w)	2142	ev_io_stop (EV_P_ ev_io *w)
1623	{	2143	{
1624	clear_pending (EV_A_ (W)w);	2144	clear_pending (EV_A_ (W)w);
1625	if (expect_false (!ev_is_active (w)))	2145	if (expect_false (!ev_is_active (w)))
1626	return;	2146	return;
1627		2147
1628	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2148	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2149
		2150	EV_FREQUENT_CHECK;
1629		2151
1630	wlist_del (&anfds[w->fd].head, (WL)w);	2152	wlist_del (&anfds[w->fd].head, (WL)w);
1631	ev_stop (EV_A_ (W)w);	2153	ev_stop (EV_A_ (W)w);
1632		2154
1633	fd_change (EV_A_ w->fd, 1);	2155	fd_change (EV_A_ w->fd, 1);
		2156
		2157	EV_FREQUENT_CHECK;
1634	}	2158	}
1635		2159
1636	void noinline	2160	void noinline
1637	ev_timer_start (EV_P_ ev_timer *w)	2161	ev_timer_start (EV_P_ ev_timer *w)
1638	{	2162	{
1639	if (expect_false (ev_is_active (w)))	2163	if (expect_false (ev_is_active (w)))
1640	return;	2164	return;
1641		2165
1642	((WT)w)->at += mn_now;	2166	ev_at (w) += mn_now;
1643		2167
1644	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2168	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1645		2169
		2170	EV_FREQUENT_CHECK;
		2171
		2172	++timercnt;
1646	ev_start (EV_A_ (W)w, ++timercnt);	2173	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1647	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2174	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1648	timers [timercnt - 1] = (WT)w;	2175	ANHE_w (timers [ev_active (w)]) = (WT)w;
1649	upheap (timers, timercnt - 1);	2176	ANHE_at_cache (timers [ev_active (w)]);
		2177	upheap (timers, ev_active (w));
1650		2178
		2179	EV_FREQUENT_CHECK;
		2180
1651	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2181	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1652	}	2182	}
1653		2183
1654	void noinline	2184	void noinline
1655	ev_timer_stop (EV_P_ ev_timer *w)	2185	ev_timer_stop (EV_P_ ev_timer *w)
1656	{	2186	{
1657	clear_pending (EV_A_ (W)w);	2187	clear_pending (EV_A_ (W)w);
1658	if (expect_false (!ev_is_active (w)))	2188	if (expect_false (!ev_is_active (w)))
1659	return;	2189	return;
1660		2190
1661	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2191	EV_FREQUENT_CHECK;
1662		2192
1663	{	2193	{
1664	int active = ((W)w)->active;	2194	int active = ev_active (w);
1665		2195
		2196	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2197
		2198	--timercnt;
		2199
1666	if (expect_true (--active < --timercnt))	2200	if (expect_true (active < timercnt + HEAP0))
1667	{	2201	{
1668	timers [active] = timers [timercnt];	2202	timers [active] = timers [timercnt + HEAP0];
1669	adjustheap (timers, timercnt, active);	2203	adjustheap (timers, timercnt, active);
1670	}	2204	}
1671	}	2205	}
1672		2206
1673	((WT)w)->at -= mn_now;	2207	EV_FREQUENT_CHECK;
		2208
		2209	ev_at (w) -= mn_now;
1674		2210
1675	ev_stop (EV_A_ (W)w);	2211	ev_stop (EV_A_ (W)w);
1676	}	2212	}
1677		2213
1678	void noinline	2214	void noinline
1679	ev_timer_again (EV_P_ ev_timer *w)	2215	ev_timer_again (EV_P_ ev_timer *w)
1680	{	2216	{
		2217	EV_FREQUENT_CHECK;
		2218
1681	if (ev_is_active (w))	2219	if (ev_is_active (w))
1682	{	2220	{
1683	if (w->repeat)	2221	if (w->repeat)
1684	{	2222	{
1685	((WT)w)->at = mn_now + w->repeat;	2223	ev_at (w) = mn_now + w->repeat;
		2224	ANHE_at_cache (timers [ev_active (w)]);
1686	adjustheap (timers, timercnt, ((W)w)->active - 1);	2225	adjustheap (timers, timercnt, ev_active (w));
1687	}	2226	}
1688	else	2227	else
1689	ev_timer_stop (EV_A_ w);	2228	ev_timer_stop (EV_A_ w);
1690	}	2229	}
1691	else if (w->repeat)	2230	else if (w->repeat)
1692	{	2231	{
1693	w->at = w->repeat;	2232	ev_at (w) = w->repeat;
1694	ev_timer_start (EV_A_ w);	2233	ev_timer_start (EV_A_ w);
1695	}	2234	}
		2235
		2236	EV_FREQUENT_CHECK;
1696	}	2237	}
1697		2238
1698	#if EV_PERIODIC_ENABLE	2239	#if EV_PERIODIC_ENABLE
1699	void noinline	2240	void noinline
1700	ev_periodic_start (EV_P_ ev_periodic *w)	2241	ev_periodic_start (EV_P_ ev_periodic *w)
1701	{	2242	{
1702	if (expect_false (ev_is_active (w)))	2243	if (expect_false (ev_is_active (w)))
1703	return;	2244	return;
1704		2245
1705	if (w->reschedule_cb)	2246	if (w->reschedule_cb)
1706	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2247	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1707	else if (w->interval)	2248	else if (w->interval)
1708	{	2249	{
1709	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2250	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1710	/* this formula differs from the one in periodic_reify because we do not always round up */	2251	/* this formula differs from the one in periodic_reify because we do not always round up */
1711	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2252	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1712	}	2253	}
1713	else	2254	else
1714	((WT)w)->at = w->offset;	2255	ev_at (w) = w->offset;
1715		2256
		2257	EV_FREQUENT_CHECK;
		2258
		2259	++periodiccnt;
1716	ev_start (EV_A_ (W)w, ++periodiccnt);	2260	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1717	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2261	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1718	periodics [periodiccnt - 1] = (WT)w;	2262	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1719	upheap (periodics, periodiccnt - 1);	2263	ANHE_at_cache (periodics [ev_active (w)]);
		2264	upheap (periodics, ev_active (w));
1720		2265
		2266	EV_FREQUENT_CHECK;
		2267
1721	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2268	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1722	}	2269	}
1723		2270
1724	void noinline	2271	void noinline
1725	ev_periodic_stop (EV_P_ ev_periodic *w)	2272	ev_periodic_stop (EV_P_ ev_periodic *w)
1726	{	2273	{
1727	clear_pending (EV_A_ (W)w);	2274	clear_pending (EV_A_ (W)w);
1728	if (expect_false (!ev_is_active (w)))	2275	if (expect_false (!ev_is_active (w)))
1729	return;	2276	return;
1730		2277
1731	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2278	EV_FREQUENT_CHECK;
1732		2279
1733	{	2280	{
1734	int active = ((W)w)->active;	2281	int active = ev_active (w);
1735		2282
		2283	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2284
		2285	--periodiccnt;
		2286
1736	if (expect_true (--active < --periodiccnt))	2287	if (expect_true (active < periodiccnt + HEAP0))
1737	{	2288	{
1738	periodics [active] = periodics [periodiccnt];	2289	periodics [active] = periodics [periodiccnt + HEAP0];
1739	adjustheap (periodics, periodiccnt, active);	2290	adjustheap (periodics, periodiccnt, active);
1740	}	2291	}
1741	}	2292	}
1742		2293
		2294	EV_FREQUENT_CHECK;
		2295
1743	ev_stop (EV_A_ (W)w);	2296	ev_stop (EV_A_ (W)w);
1744	}	2297	}
1745		2298
1746	void noinline	2299	void noinline
1747	ev_periodic_again (EV_P_ ev_periodic *w)	2300	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1764	#endif	2317	#endif
1765	if (expect_false (ev_is_active (w)))	2318	if (expect_false (ev_is_active (w)))
1766	return;	2319	return;
1767		2320
1768	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2321	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2322
		2323	evpipe_init (EV_A);
		2324
		2325	EV_FREQUENT_CHECK;
1769		2326
1770	{	2327	{
1771	#ifndef _WIN32	2328	#ifndef _WIN32
1772	sigset_t full, prev;	2329	sigset_t full, prev;
1773	sigfillset (&full);	2330	sigfillset (&full);
…		…
1785	wlist_add (&signals [w->signum - 1].head, (WL)w);	2342	wlist_add (&signals [w->signum - 1].head, (WL)w);
1786		2343
1787	if (!((WL)w)->next)	2344	if (!((WL)w)->next)
1788	{	2345	{
1789	#if _WIN32	2346	#if _WIN32
1790	signal (w->signum, sighandler);	2347	signal (w->signum, ev_sighandler);
1791	#else	2348	#else
1792	struct sigaction sa;	2349	struct sigaction sa;
1793	sa.sa_handler = sighandler;	2350	sa.sa_handler = ev_sighandler;
1794	sigfillset (&sa.sa_mask);	2351	sigfillset (&sa.sa_mask);
1795	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2352	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1796	sigaction (w->signum, &sa, 0);	2353	sigaction (w->signum, &sa, 0);
1797	#endif	2354	#endif
1798	}	2355	}
		2356
		2357	EV_FREQUENT_CHECK;
1799	}	2358	}
1800		2359
1801	void noinline	2360	void noinline
1802	ev_signal_stop (EV_P_ ev_signal *w)	2361	ev_signal_stop (EV_P_ ev_signal *w)
1803	{	2362	{
1804	clear_pending (EV_A_ (W)w);	2363	clear_pending (EV_A_ (W)w);
1805	if (expect_false (!ev_is_active (w)))	2364	if (expect_false (!ev_is_active (w)))
1806	return;	2365	return;
1807		2366
		2367	EV_FREQUENT_CHECK;
		2368
1808	wlist_del (&signals [w->signum - 1].head, (WL)w);	2369	wlist_del (&signals [w->signum - 1].head, (WL)w);
1809	ev_stop (EV_A_ (W)w);	2370	ev_stop (EV_A_ (W)w);
1810		2371
1811	if (!signals [w->signum - 1].head)	2372	if (!signals [w->signum - 1].head)
1812	signal (w->signum, SIG_DFL);	2373	signal (w->signum, SIG_DFL);
		2374
		2375	EV_FREQUENT_CHECK;
1813	}	2376	}
1814		2377
1815	void	2378	void
1816	ev_child_start (EV_P_ ev_child *w)	2379	ev_child_start (EV_P_ ev_child *w)
1817	{	2380	{
…		…
1819	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2382	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1820	#endif	2383	#endif
1821	if (expect_false (ev_is_active (w)))	2384	if (expect_false (ev_is_active (w)))
1822	return;	2385	return;
1823		2386
		2387	EV_FREQUENT_CHECK;
		2388
1824	ev_start (EV_A_ (W)w, 1);	2389	ev_start (EV_A_ (W)w, 1);
1825	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2390	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2391
		2392	EV_FREQUENT_CHECK;
1826	}	2393	}
1827		2394
1828	void	2395	void
1829	ev_child_stop (EV_P_ ev_child *w)	2396	ev_child_stop (EV_P_ ev_child *w)
1830	{	2397	{
1831	clear_pending (EV_A_ (W)w);	2398	clear_pending (EV_A_ (W)w);
1832	if (expect_false (!ev_is_active (w)))	2399	if (expect_false (!ev_is_active (w)))
1833	return;	2400	return;
1834		2401
		2402	EV_FREQUENT_CHECK;
		2403
1835	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2404	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1836	ev_stop (EV_A_ (W)w);	2405	ev_stop (EV_A_ (W)w);
		2406
		2407	EV_FREQUENT_CHECK;
1837	}	2408	}
1838		2409
1839	#if EV_STAT_ENABLE	2410	#if EV_STAT_ENABLE
1840		2411
1841	# ifdef _WIN32	2412	# ifdef _WIN32
…		…
1859	if (w->wd < 0)	2430	if (w->wd < 0)
1860	{	2431	{
1861	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2432	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1862		2433
1863	/* monitor some parent directory for speedup hints */	2434	/* monitor some parent directory for speedup hints */
		2435	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2436	/* but an efficiency issue only */
1864	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2437	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1865	{	2438	{
1866	char path [4096];	2439	char path [4096];
1867	strcpy (path, w->path);	2440	strcpy (path, w->path);
1868		2441
…		…
1994	}	2567	}
1995		2568
1996	}	2569	}
1997	}	2570	}
1998		2571
		2572	#endif
		2573
		2574	#ifdef _WIN32
		2575	# define EV_LSTAT(p,b) _stati64 (p, b)
		2576	#else
		2577	# define EV_LSTAT(p,b) lstat (p, b)
1999	#endif	2578	#endif
2000		2579
2001	void	2580	void
2002	ev_stat_stat (EV_P_ ev_stat *w)	2581	ev_stat_stat (EV_P_ ev_stat *w)
2003	{	2582	{
…		…
2067	else	2646	else
2068	#endif	2647	#endif
2069	ev_timer_start (EV_A_ &w->timer);	2648	ev_timer_start (EV_A_ &w->timer);
2070		2649
2071	ev_start (EV_A_ (W)w, 1);	2650	ev_start (EV_A_ (W)w, 1);
		2651
		2652	EV_FREQUENT_CHECK;
2072	}	2653	}
2073		2654
2074	void	2655	void
2075	ev_stat_stop (EV_P_ ev_stat *w)	2656	ev_stat_stop (EV_P_ ev_stat *w)
2076	{	2657	{
2077	clear_pending (EV_A_ (W)w);	2658	clear_pending (EV_A_ (W)w);
2078	if (expect_false (!ev_is_active (w)))	2659	if (expect_false (!ev_is_active (w)))
2079	return;	2660	return;
2080		2661
		2662	EV_FREQUENT_CHECK;
		2663
2081	#if EV_USE_INOTIFY	2664	#if EV_USE_INOTIFY
2082	infy_del (EV_A_ w);	2665	infy_del (EV_A_ w);
2083	#endif	2666	#endif
2084	ev_timer_stop (EV_A_ &w->timer);	2667	ev_timer_stop (EV_A_ &w->timer);
2085		2668
2086	ev_stop (EV_A_ (W)w);	2669	ev_stop (EV_A_ (W)w);
		2670
		2671	EV_FREQUENT_CHECK;
2087	}	2672	}
2088	#endif	2673	#endif
2089		2674
2090	#if EV_IDLE_ENABLE	2675	#if EV_IDLE_ENABLE
2091	void	2676	void
…		…
2093	{	2678	{
2094	if (expect_false (ev_is_active (w)))	2679	if (expect_false (ev_is_active (w)))
2095	return;	2680	return;
2096		2681
2097	pri_adjust (EV_A_ (W)w);	2682	pri_adjust (EV_A_ (W)w);
		2683
		2684	EV_FREQUENT_CHECK;
2098		2685
2099	{	2686	{
2100	int active = ++idlecnt [ABSPRI (w)];	2687	int active = ++idlecnt [ABSPRI (w)];
2101		2688
2102	++idleall;	2689	++idleall;
2103	ev_start (EV_A_ (W)w, active);	2690	ev_start (EV_A_ (W)w, active);
2104		2691
2105	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2692	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2106	idles [ABSPRI (w)][active - 1] = w;	2693	idles [ABSPRI (w)][active - 1] = w;
2107	}	2694	}
		2695
		2696	EV_FREQUENT_CHECK;
2108	}	2697	}
2109		2698
2110	void	2699	void
2111	ev_idle_stop (EV_P_ ev_idle *w)	2700	ev_idle_stop (EV_P_ ev_idle *w)
2112	{	2701	{
2113	clear_pending (EV_A_ (W)w);	2702	clear_pending (EV_A_ (W)w);
2114	if (expect_false (!ev_is_active (w)))	2703	if (expect_false (!ev_is_active (w)))
2115	return;	2704	return;
2116		2705
		2706	EV_FREQUENT_CHECK;
		2707
2117	{	2708	{
2118	int active = ((W)w)->active;	2709	int active = ev_active (w);
2119		2710
2120	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2711	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2121	((W)idles [ABSPRI (w)][active - 1])->active = active;	2712	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2122		2713
2123	ev_stop (EV_A_ (W)w);	2714	ev_stop (EV_A_ (W)w);
2124	--idleall;	2715	--idleall;
2125	}	2716	}
		2717
		2718	EV_FREQUENT_CHECK;
2126	}	2719	}
2127	#endif	2720	#endif
2128		2721
2129	void	2722	void
2130	ev_prepare_start (EV_P_ ev_prepare *w)	2723	ev_prepare_start (EV_P_ ev_prepare *w)
2131	{	2724	{
2132	if (expect_false (ev_is_active (w)))	2725	if (expect_false (ev_is_active (w)))
2133	return;	2726	return;
		2727
		2728	EV_FREQUENT_CHECK;
2134		2729
2135	ev_start (EV_A_ (W)w, ++preparecnt);	2730	ev_start (EV_A_ (W)w, ++preparecnt);
2136	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2731	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2137	prepares [preparecnt - 1] = w;	2732	prepares [preparecnt - 1] = w;
		2733
		2734	EV_FREQUENT_CHECK;
2138	}	2735	}
2139		2736
2140	void	2737	void
2141	ev_prepare_stop (EV_P_ ev_prepare *w)	2738	ev_prepare_stop (EV_P_ ev_prepare *w)
2142	{	2739	{
2143	clear_pending (EV_A_ (W)w);	2740	clear_pending (EV_A_ (W)w);
2144	if (expect_false (!ev_is_active (w)))	2741	if (expect_false (!ev_is_active (w)))
2145	return;	2742	return;
2146		2743
		2744	EV_FREQUENT_CHECK;
		2745
2147	{	2746	{
2148	int active = ((W)w)->active;	2747	int active = ev_active (w);
		2748
2149	prepares [active - 1] = prepares [--preparecnt];	2749	prepares [active - 1] = prepares [--preparecnt];
2150	((W)prepares [active - 1])->active = active;	2750	ev_active (prepares [active - 1]) = active;
2151	}	2751	}
2152		2752
2153	ev_stop (EV_A_ (W)w);	2753	ev_stop (EV_A_ (W)w);
		2754
		2755	EV_FREQUENT_CHECK;
2154	}	2756	}
2155		2757
2156	void	2758	void
2157	ev_check_start (EV_P_ ev_check *w)	2759	ev_check_start (EV_P_ ev_check *w)
2158	{	2760	{
2159	if (expect_false (ev_is_active (w)))	2761	if (expect_false (ev_is_active (w)))
2160	return;	2762	return;
		2763
		2764	EV_FREQUENT_CHECK;
2161		2765
2162	ev_start (EV_A_ (W)w, ++checkcnt);	2766	ev_start (EV_A_ (W)w, ++checkcnt);
2163	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2767	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2164	checks [checkcnt - 1] = w;	2768	checks [checkcnt - 1] = w;
		2769
		2770	EV_FREQUENT_CHECK;
2165	}	2771	}
2166		2772
2167	void	2773	void
2168	ev_check_stop (EV_P_ ev_check *w)	2774	ev_check_stop (EV_P_ ev_check *w)
2169	{	2775	{
2170	clear_pending (EV_A_ (W)w);	2776	clear_pending (EV_A_ (W)w);
2171	if (expect_false (!ev_is_active (w)))	2777	if (expect_false (!ev_is_active (w)))
2172	return;	2778	return;
2173		2779
		2780	EV_FREQUENT_CHECK;
		2781
2174	{	2782	{
2175	int active = ((W)w)->active;	2783	int active = ev_active (w);
		2784
2176	checks [active - 1] = checks [--checkcnt];	2785	checks [active - 1] = checks [--checkcnt];
2177	((W)checks [active - 1])->active = active;	2786	ev_active (checks [active - 1]) = active;
2178	}	2787	}
2179		2788
2180	ev_stop (EV_A_ (W)w);	2789	ev_stop (EV_A_ (W)w);
		2790
		2791	EV_FREQUENT_CHECK;
2181	}	2792	}
2182		2793
2183	#if EV_EMBED_ENABLE	2794	#if EV_EMBED_ENABLE
2184	void noinline	2795	void noinline
2185	ev_embed_sweep (EV_P_ ev_embed *w)	2796	ev_embed_sweep (EV_P_ ev_embed *w)
2186	{	2797	{
2187	ev_loop (w->other, EVLOOP_NONBLOCK);	2798	ev_loop (w->other, EVLOOP_NONBLOCK);
2188	}	2799	}
2189		2800
2190	static void	2801	static void
2191	embed_cb (EV_P_ ev_io *io, int revents)	2802	embed_io_cb (EV_P_ ev_io *io, int revents)
2192	{	2803	{
2193	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2804	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2194		2805
2195	if (ev_cb (w))	2806	if (ev_cb (w))
2196	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2807	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2197	else	2808	else
2198	ev_embed_sweep (loop, w);	2809	ev_loop (w->other, EVLOOP_NONBLOCK);
2199	}	2810	}
		2811
		2812	static void
		2813	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2814	{
		2815	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2816
		2817	{
		2818	struct ev_loop *loop = w->other;
		2819
		2820	while (fdchangecnt)
		2821	{
		2822	fd_reify (EV_A);
		2823	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2824	}
		2825	}
		2826	}
		2827
		2828	#if 0
		2829	static void
		2830	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2831	{
		2832	ev_idle_stop (EV_A_ idle);
		2833	}
		2834	#endif
2200		2835
2201	void	2836	void
2202	ev_embed_start (EV_P_ ev_embed *w)	2837	ev_embed_start (EV_P_ ev_embed *w)
2203	{	2838	{
2204	if (expect_false (ev_is_active (w)))	2839	if (expect_false (ev_is_active (w)))
2205	return;	2840	return;
2206		2841
2207	{	2842	{
2208	struct ev_loop *loop = w->other;	2843	struct ev_loop *loop = w->other;
2209	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2844	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2210	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2845	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2211	}	2846	}
		2847
		2848	EV_FREQUENT_CHECK;
2212		2849
2213	ev_set_priority (&w->io, ev_priority (w));	2850	ev_set_priority (&w->io, ev_priority (w));
2214	ev_io_start (EV_A_ &w->io);	2851	ev_io_start (EV_A_ &w->io);
2215		2852
		2853	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2854	ev_set_priority (&w->prepare, EV_MINPRI);
		2855	ev_prepare_start (EV_A_ &w->prepare);
		2856
		2857	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2858
2216	ev_start (EV_A_ (W)w, 1);	2859	ev_start (EV_A_ (W)w, 1);
		2860
		2861	EV_FREQUENT_CHECK;
2217	}	2862	}
2218		2863
2219	void	2864	void
2220	ev_embed_stop (EV_P_ ev_embed *w)	2865	ev_embed_stop (EV_P_ ev_embed *w)
2221	{	2866	{
2222	clear_pending (EV_A_ (W)w);	2867	clear_pending (EV_A_ (W)w);
2223	if (expect_false (!ev_is_active (w)))	2868	if (expect_false (!ev_is_active (w)))
2224	return;	2869	return;
2225		2870
		2871	EV_FREQUENT_CHECK;
		2872
2226	ev_io_stop (EV_A_ &w->io);	2873	ev_io_stop (EV_A_ &w->io);
		2874	ev_prepare_stop (EV_A_ &w->prepare);
2227		2875
2228	ev_stop (EV_A_ (W)w);	2876	ev_stop (EV_A_ (W)w);
		2877
		2878	EV_FREQUENT_CHECK;
2229	}	2879	}
2230	#endif	2880	#endif
2231		2881
2232	#if EV_FORK_ENABLE	2882	#if EV_FORK_ENABLE
2233	void	2883	void
2234	ev_fork_start (EV_P_ ev_fork *w)	2884	ev_fork_start (EV_P_ ev_fork *w)
2235	{	2885	{
2236	if (expect_false (ev_is_active (w)))	2886	if (expect_false (ev_is_active (w)))
2237	return;	2887	return;
		2888
		2889	EV_FREQUENT_CHECK;
2238		2890
2239	ev_start (EV_A_ (W)w, ++forkcnt);	2891	ev_start (EV_A_ (W)w, ++forkcnt);
2240	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2892	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2241	forks [forkcnt - 1] = w;	2893	forks [forkcnt - 1] = w;
		2894
		2895	EV_FREQUENT_CHECK;
2242	}	2896	}
2243		2897
2244	void	2898	void
2245	ev_fork_stop (EV_P_ ev_fork *w)	2899	ev_fork_stop (EV_P_ ev_fork *w)
2246	{	2900	{
2247	clear_pending (EV_A_ (W)w);	2901	clear_pending (EV_A_ (W)w);
2248	if (expect_false (!ev_is_active (w)))	2902	if (expect_false (!ev_is_active (w)))
2249	return;	2903	return;
2250		2904
		2905	EV_FREQUENT_CHECK;
		2906
2251	{	2907	{
2252	int active = ((W)w)->active;	2908	int active = ev_active (w);
		2909
2253	forks [active - 1] = forks [--forkcnt];	2910	forks [active - 1] = forks [--forkcnt];
2254	((W)forks [active - 1])->active = active;	2911	ev_active (forks [active - 1]) = active;
2255	}	2912	}
2256		2913
2257	ev_stop (EV_A_ (W)w);	2914	ev_stop (EV_A_ (W)w);
		2915
		2916	EV_FREQUENT_CHECK;
		2917	}
		2918	#endif
		2919
		2920	#if EV_ASYNC_ENABLE
		2921	void
		2922	ev_async_start (EV_P_ ev_async *w)
		2923	{
		2924	if (expect_false (ev_is_active (w)))
		2925	return;
		2926
		2927	evpipe_init (EV_A);
		2928
		2929	EV_FREQUENT_CHECK;
		2930
		2931	ev_start (EV_A_ (W)w, ++asynccnt);
		2932	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2933	asyncs [asynccnt - 1] = w;
		2934
		2935	EV_FREQUENT_CHECK;
		2936	}
		2937
		2938	void
		2939	ev_async_stop (EV_P_ ev_async *w)
		2940	{
		2941	clear_pending (EV_A_ (W)w);
		2942	if (expect_false (!ev_is_active (w)))
		2943	return;
		2944
		2945	EV_FREQUENT_CHECK;
		2946
		2947	{
		2948	int active = ev_active (w);
		2949
		2950	asyncs [active - 1] = asyncs [--asynccnt];
		2951	ev_active (asyncs [active - 1]) = active;
		2952	}
		2953
		2954	ev_stop (EV_A_ (W)w);
		2955
		2956	EV_FREQUENT_CHECK;
		2957	}
		2958
		2959	void
		2960	ev_async_send (EV_P_ ev_async *w)
		2961	{
		2962	w->sent = 1;
		2963	evpipe_write (EV_A_ &gotasync);
2258	}	2964	}
2259	#endif	2965	#endif
2260		2966
2261	/*****************************************************************************/	2967	/*****************************************************************************/
2262		2968

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