[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.177 by root, Tue Dec 11 15:06:50 2007 UTC vs.
Revision 1.239 by root, Thu May 8 20:52:13 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;
…		…
476	pendings [pri][w_->pending - 1].w = w_;	591	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	592	pendings [pri][w_->pending - 1].events = revents;
478	}	593	}
479	}	594	}
480		595
481	void inline_size	596	void inline_speed
482	queue_events (EV_P_ W *events, int eventcnt, int type)	597	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	598	{
484	int i;	599	int i;
485		600
486	for (i = 0; i < eventcnt; ++i)	601	for (i = 0; i < eventcnt; ++i)
…		…
533	{	648	{
534	int fd = fdchanges [i];	649	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	650	ANFD *anfd = anfds + fd;
536	ev_io *w;	651	ev_io *w;
537		652
538	int events = 0;	653	unsigned char events = 0;
539		654
540	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	655	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
541	events \|= w->events;	656	events \|= (unsigned char)w->events;
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
		671	{
		672	unsigned char o_events = anfd->events;
		673	unsigned char o_reify = anfd->reify;
		674
552	anfd->reify = 0;	675	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	676	anfd->events = events;
		677
		678	if (o_events != events \|\| o_reify & EV_IOFDSET)
		679	backend_modify (EV_A_ fd, o_events, events);
		680	}
556	}	681	}
557		682
558	fdchangecnt = 0;	683	fdchangecnt = 0;
559	}	684	}
560		685
561	void inline_size	686	void inline_size
562	fd_change (EV_P_ int fd)	687	fd_change (EV_P_ int fd, int flags)
563	{	688	{
564	if (expect_false (anfds [fd].reify))	689	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	690	anfds [fd].reify \|= flags;
568		691
		692	if (expect_true (!reify))
		693	{
569	++fdchangecnt;	694	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	696	fdchanges [fdchangecnt - 1] = fd;
		697	}
572	}	698	}
573		699
574	void inline_speed	700	void inline_speed
575	fd_kill (EV_P_ int fd)	701	fd_kill (EV_P_ int fd)
576	{	702	{
…		…
627		753
628	for (fd = 0; fd < anfdmax; ++fd)	754	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	755	if (anfds [fd].events)
630	{	756	{
631	anfds [fd].events = 0;	757	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	758	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
633	}	759	}
634	}	760	}
635		761
636	/*****************************************************************************/	762	/*****************************************************************************/
637		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 */
638	void inline_speed	777	void inline_speed
639	upheap (WT *heap, int k)	778	upheap (WT *heap, int k)
640	{	779	{
641	WT w = heap [k];	780	WT w = heap [k];
642		781
643	while (k && heap [k >> 1]->at > w->at)	782	for (;;)
644	{	783	{
		784	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
		785
		786	if (p == k \|\| heap [p]->at <= w->at)
		787	break;
		788
645	heap [k] = heap [k >> 1];	789	heap [k] = heap [p];
646	((W)heap [k])->active = k + 1;	790	ev_active (heap [k]) = k;
647	k >>= 1;	791	k = p;
648	}	792	}
649		793
650	heap [k] = w;	794	heap [k] = w;
651	((W)heap [k])->active = k + 1;	795	ev_active (heap [k]) = k;
652
653	}	796	}
654		797
		798	/* away from the root */
655	void inline_speed	799	void inline_speed
656	downheap (WT *heap, int N, int k)	800	downheap (WT *heap, int N, int k)
657	{	801	{
658	WT w = heap [k];	802	WT w = heap [k];
		803	WT *E = heap + N + HEAP0;
659		804
660	while (k < (N >> 1))	805	for (;;)
661	{	806	{
662	int j = k << 1;	807	ev_tstamp minat;
		808	WT *minpos;
		809	WT pos = heap + DHEAP (k - HEAP0) + HEAP0;
663		810
664	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	811	// find minimum child
		812	if (expect_true (pos + DHEAP - 1 < E))
665	++j;	813	{
		814	/* fast path */
		815	(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
		821	{
		822	/* slow path */
		823	if (pos >= E)
		824	break;
		825	(minpos = pos + 0), (minat = (*minpos)->at);
		826	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
		827	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
		828	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
		829	}
666		830
667	if (w->at <= heap [j]->at)	831	if (w->at <= minat)
668	break;	832	break;
669		833
670	heap [k] = heap [j];	834	ev_active (*minpos) = k;
671	((W)heap [k])->active = k + 1;	835	heap [k] = *minpos;
672	k = j;	836
		837	k = minpos - heap;
673	}	838	}
674		839
675	heap [k] = w;	840	heap [k] = w;
		841	ev_active (heap [k]) = k;
		842	}
		843
		844	#else // 4HEAP
		845
		846	#define HEAP0 1
		847
		848	/* towards the root */
		849	void inline_speed
		850	upheap (WT *heap, int k)
		851	{
		852	WT w = heap [k];
		853
		854	for (;;)
		855	{
		856	int p = k >> 1;
		857
		858	/* maybe we could use a dummy element at heap [0]? */
		859	if (!p \|\| heap [p]->at <= w->at)
		860	break;
		861
		862	heap [k] = heap [p];
		863	ev_active (heap [k]) = k;
		864	k = p;
		865	}
		866
		867	heap [k] = w;
		868	ev_active (heap [k]) = k;
		869	}
		870
		871	/* away from the root */
		872	void inline_speed
		873	downheap (WT *heap, int N, int k)
		874	{
		875	WT w = heap [k];
		876
		877	for (;;)
		878	{
		879	int c = k << 1;
		880
		881	if (c > N)
		882	break;
		883
		884	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		885	? 1 : 0;
		886
		887	if (w->at <= heap [c]->at)
		888	break;
		889
		890	heap [k] = heap [c];
676	((W)heap [k])->active = k + 1;	891	((W)heap [k])->active = k;
		892
		893	k = c;
		894	}
		895
		896	heap [k] = w;
		897	ev_active (heap [k]) = k;
677	}	898	}
		899	#endif
678		900
679	void inline_size	901	void inline_size
680	adjustheap (WT *heap, int N, int k)	902	adjustheap (WT *heap, int N, int k)
681	{	903	{
682	upheap (heap, k);	904	upheap (heap, k);
…		…
686	/*****************************************************************************/	908	/*****************************************************************************/
687		909
688	typedef struct	910	typedef struct
689	{	911	{
690	WL head;	912	WL head;
691	sig_atomic_t volatile gotsig;	913	EV_ATOMIC_T gotsig;
692	} ANSIG;	914	} ANSIG;
693		915
694	static ANSIG *signals;	916	static ANSIG *signals;
695	static int signalmax;	917	static int signalmax;
696		918
697	static int sigpipe [2];	919	static EV_ATOMIC_T gotsig;
698	static sig_atomic_t volatile gotsig;
699	static ev_io sigev;
700		920
701	void inline_size	921	void inline_size
702	signals_init (ANSIG *base, int count)	922	signals_init (ANSIG *base, int count)
703	{	923	{
704	while (count--)	924	while (count--)
…		…
708		928
709	++base;	929	++base;
710	}	930	}
711	}	931	}
712		932
713	static void	933	/*****************************************************************************/
714	sighandler (int signum)
715	{
716	#if _WIN32
717	signal (signum, sighandler);
718	#endif
719
720	signals [signum - 1].gotsig = 1;
721
722	if (!gotsig)
723	{
724	int old_errno = errno;
725	gotsig = 1;
726	write (sigpipe [1], &signum, 1);
727	errno = old_errno;
728	}
729	}
730
731	void noinline
732	ev_feed_signal_event (EV_P_ int signum)
733	{
734	WL w;
735
736	#if EV_MULTIPLICITY
737	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
738	#endif
739
740	--signum;
741
742	if (signum < 0 \|\| signum >= signalmax)
743	return;
744
745	signals [signum].gotsig = 0;
746
747	for (w = signals [signum].head; w; w = w->next)
748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
749	}
750
751	static void
752	sigcb (EV_P_ ev_io *iow, int revents)
753	{
754	int signum;
755
756	read (sigpipe [0], &revents, 1);
757	gotsig = 0;
758
759	for (signum = signalmax; signum--; )
760	if (signals [signum].gotsig)
761	ev_feed_signal_event (EV_A_ signum + 1);
762	}
763		934
764	void inline_speed	935	void inline_speed
765	fd_intern (int fd)	936	fd_intern (int fd)
766	{	937	{
767	#ifdef _WIN32	938	#ifdef _WIN32
…		…
772	fcntl (fd, F_SETFL, O_NONBLOCK);	943	fcntl (fd, F_SETFL, O_NONBLOCK);
773	#endif	944	#endif
774	}	945	}
775		946
776	static void noinline	947	static void noinline
777	siginit (EV_P)	948	evpipe_init (EV_P)
778	{	949	{
		950	if (!ev_is_active (&pipeev))
		951	{
		952	#if EV_USE_EVENTFD
		953	if ((evfd = eventfd (0, 0)) >= 0)
		954	{
		955	evpipe [0] = -1;
		956	fd_intern (evfd);
		957	ev_io_set (&pipeev, evfd, EV_READ);
		958	}
		959	else
		960	#endif
		961	{
		962	while (pipe (evpipe))
		963	syserr ("(libev) error creating signal/async pipe");
		964
779	fd_intern (sigpipe [0]);	965	fd_intern (evpipe [0]);
780	fd_intern (sigpipe [1]);	966	fd_intern (evpipe [1]);
		967	ev_io_set (&pipeev, evpipe [0], EV_READ);
		968	}
781		969
782	ev_io_set (&sigev, sigpipe [0], EV_READ);
783	ev_io_start (EV_A_ &sigev);	970	ev_io_start (EV_A_ &pipeev);
784	ev_unref (EV_A); /* child watcher should not keep loop alive */	971	ev_unref (EV_A); /* watcher should not keep loop alive */
		972	}
		973	}
		974
		975	void inline_size
		976	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		977	{
		978	if (!*flag)
		979	{
		980	int old_errno = errno; /* save errno because write might clobber it */
		981
		982	*flag = 1;
		983
		984	#if EV_USE_EVENTFD
		985	if (evfd >= 0)
		986	{
		987	uint64_t counter = 1;
		988	write (evfd, &counter, sizeof (uint64_t));
		989	}
		990	else
		991	#endif
		992	write (evpipe [1], &old_errno, 1);
		993
		994	errno = old_errno;
		995	}
		996	}
		997
		998	static void
		999	pipecb (EV_P_ ev_io *iow, int revents)
		1000	{
		1001	#if EV_USE_EVENTFD
		1002	if (evfd >= 0)
		1003	{
		1004	uint64_t counter;
		1005	read (evfd, &counter, sizeof (uint64_t));
		1006	}
		1007	else
		1008	#endif
		1009	{
		1010	char dummy;
		1011	read (evpipe [0], &dummy, 1);
		1012	}
		1013
		1014	if (gotsig && ev_is_default_loop (EV_A))
		1015	{
		1016	int signum;
		1017	gotsig = 0;
		1018
		1019	for (signum = signalmax; signum--; )
		1020	if (signals [signum].gotsig)
		1021	ev_feed_signal_event (EV_A_ signum + 1);
		1022	}
		1023
		1024	#if EV_ASYNC_ENABLE
		1025	if (gotasync)
		1026	{
		1027	int i;
		1028	gotasync = 0;
		1029
		1030	for (i = asynccnt; i--; )
		1031	if (asyncs [i]->sent)
		1032	{
		1033	asyncs [i]->sent = 0;
		1034	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1035	}
		1036	}
		1037	#endif
785	}	1038	}
786		1039
787	/*****************************************************************************/	1040	/*****************************************************************************/
788		1041
		1042	static void
		1043	ev_sighandler (int signum)
		1044	{
		1045	#if EV_MULTIPLICITY
		1046	struct ev_loop *loop = &default_loop_struct;
		1047	#endif
		1048
		1049	#if _WIN32
		1050	signal (signum, ev_sighandler);
		1051	#endif
		1052
		1053	signals [signum - 1].gotsig = 1;
		1054	evpipe_write (EV_A_ &gotsig);
		1055	}
		1056
		1057	void noinline
		1058	ev_feed_signal_event (EV_P_ int signum)
		1059	{
		1060	WL w;
		1061
		1062	#if EV_MULTIPLICITY
		1063	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1064	#endif
		1065
		1066	--signum;
		1067
		1068	if (signum < 0 \|\| signum >= signalmax)
		1069	return;
		1070
		1071	signals [signum].gotsig = 0;
		1072
		1073	for (w = signals [signum].head; w; w = w->next)
		1074	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1075	}
		1076
		1077	/*****************************************************************************/
		1078
789	static ev_child *childs [EV_PID_HASHSIZE];	1079	static WL childs [EV_PID_HASHSIZE];
790		1080
791	#ifndef _WIN32	1081	#ifndef _WIN32
792		1082
793	static ev_signal childev;	1083	static ev_signal childev;
794		1084
		1085	#ifndef WIFCONTINUED
		1086	# define WIFCONTINUED(status) 0
		1087	#endif
		1088
795	void inline_speed	1089	void inline_speed
796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1090	child_reap (EV_P_ int chain, int pid, int status)
797	{	1091	{
798	ev_child *w;	1092	ev_child *w;
		1093	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
799		1094
800	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1095	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1096	{
801	if (w->pid == pid \|\| !w->pid)	1097	if ((w->pid == pid \|\| !w->pid)
		1098	&& (!traced \|\| (w->flags & 1)))
802	{	1099	{
803	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	1100	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
804	w->rpid = pid;	1101	w->rpid = pid;
805	w->rstatus = status;	1102	w->rstatus = status;
806	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1103	ev_feed_event (EV_A_ (W)w, EV_CHILD);
807	}	1104	}
		1105	}
808	}	1106	}
809		1107
810	#ifndef WCONTINUED	1108	#ifndef WCONTINUED
811	# define WCONTINUED 0	1109	# define WCONTINUED 0
812	#endif	1110	#endif
…		…
821	if (!WCONTINUED	1119	if (!WCONTINUED
822	\|\| errno != EINVAL	1120	\|\| errno != EINVAL
823	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1121	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
824	return;	1122	return;
825		1123
826	/* make sure we are called again until all childs have been reaped */	1124	/* make sure we are called again until all children have been reaped */
827	/* we need to do it this way so that the callback gets called before we continue */	1125	/* we need to do it this way so that the callback gets called before we continue */
828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1126	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
829		1127
830	child_reap (EV_A_ sw, pid, pid, status);	1128	child_reap (EV_A_ pid, pid, status);
831	if (EV_PID_HASHSIZE > 1)	1129	if (EV_PID_HASHSIZE > 1)
832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1130	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
833	}	1131	}
834		1132
835	#endif	1133	#endif
836		1134
837	/*****************************************************************************/	1135	/*****************************************************************************/
…		…
909	}	1207	}
910		1208
911	unsigned int	1209	unsigned int
912	ev_embeddable_backends (void)	1210	ev_embeddable_backends (void)
913	{	1211	{
914	return EVBACKEND_EPOLL	1212	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
915	\| EVBACKEND_KQUEUE	1213
916	\| EVBACKEND_PORT;	1214	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1215	/* please fix it and tell me how to detect the fix */
		1216	flags &= ~EVBACKEND_EPOLL;
		1217
		1218	return flags;
917	}	1219	}
918		1220
919	unsigned int	1221	unsigned int
920	ev_backend (EV_P)	1222	ev_backend (EV_P)
921	{	1223	{
…		…
924		1226
925	unsigned int	1227	unsigned int
926	ev_loop_count (EV_P)	1228	ev_loop_count (EV_P)
927	{	1229	{
928	return loop_count;	1230	return loop_count;
		1231	}
		1232
		1233	void
		1234	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1235	{
		1236	io_blocktime = interval;
		1237	}
		1238
		1239	void
		1240	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1241	{
		1242	timeout_blocktime = interval;
929	}	1243	}
930		1244
931	static void noinline	1245	static void noinline
932	loop_init (EV_P_ unsigned int flags)	1246	loop_init (EV_P_ unsigned int flags)
933	{	1247	{
…		…
939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1253	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
940	have_monotonic = 1;	1254	have_monotonic = 1;
941	}	1255	}
942	#endif	1256	#endif
943		1257
944	ev_rt_now = ev_time ();	1258	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1259	mn_now = get_clock ();
946	now_floor = mn_now;	1260	now_floor = mn_now;
947	rtmn_diff = ev_rt_now - mn_now;	1261	rtmn_diff = ev_rt_now - mn_now;
		1262
		1263	io_blocktime = 0.;
		1264	timeout_blocktime = 0.;
		1265	backend = 0;
		1266	backend_fd = -1;
		1267	gotasync = 0;
		1268	#if EV_USE_INOTIFY
		1269	fs_fd = -2;
		1270	#endif
948		1271
949	/* pid check not overridable via env */	1272	/* pid check not overridable via env */
950	#ifndef _WIN32	1273	#ifndef _WIN32
951	if (flags & EVFLAG_FORKCHECK)	1274	if (flags & EVFLAG_FORKCHECK)
952	curpid = getpid ();	1275	curpid = getpid ();
…		…
955	if (!(flags & EVFLAG_NOENV)	1278	if (!(flags & EVFLAG_NOENV)
956	&& !enable_secure ()	1279	&& !enable_secure ()
957	&& getenv ("LIBEV_FLAGS"))	1280	&& getenv ("LIBEV_FLAGS"))
958	flags = atoi (getenv ("LIBEV_FLAGS"));	1281	flags = atoi (getenv ("LIBEV_FLAGS"));
959		1282
960	if (!(flags & 0x0000ffffUL))	1283	if (!(flags & 0x0000ffffU))
961	flags \|= ev_recommended_backends ();	1284	flags \|= ev_recommended_backends ();
962
963	backend = 0;
964	backend_fd = -1;
965	#if EV_USE_INOTIFY
966	fs_fd = -2;
967	#endif
968		1285
969	#if EV_USE_PORT	1286	#if EV_USE_PORT
970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1287	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
971	#endif	1288	#endif
972	#if EV_USE_KQUEUE	1289	#if EV_USE_KQUEUE
…		…
980	#endif	1297	#endif
981	#if EV_USE_SELECT	1298	#if EV_USE_SELECT
982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1299	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
983	#endif	1300	#endif
984		1301
985	ev_init (&sigev, sigcb);	1302	ev_init (&pipeev, pipecb);
986	ev_set_priority (&sigev, EV_MAXPRI);	1303	ev_set_priority (&pipeev, EV_MAXPRI);
987	}	1304	}
988	}	1305	}
989		1306
990	static void noinline	1307	static void noinline
991	loop_destroy (EV_P)	1308	loop_destroy (EV_P)
992	{	1309	{
993	int i;	1310	int i;
		1311
		1312	if (ev_is_active (&pipeev))
		1313	{
		1314	ev_ref (EV_A); /* signal watcher */
		1315	ev_io_stop (EV_A_ &pipeev);
		1316
		1317	#if EV_USE_EVENTFD
		1318	if (evfd >= 0)
		1319	close (evfd);
		1320	#endif
		1321
		1322	if (evpipe [0] >= 0)
		1323	{
		1324	close (evpipe [0]);
		1325	close (evpipe [1]);
		1326	}
		1327	}
994		1328
995	#if EV_USE_INOTIFY	1329	#if EV_USE_INOTIFY
996	if (fs_fd >= 0)	1330	if (fs_fd >= 0)
997	close (fs_fd);	1331	close (fs_fd);
998	#endif	1332	#endif
…		…
1021	array_free (pending, [i]);	1355	array_free (pending, [i]);
1022	#if EV_IDLE_ENABLE	1356	#if EV_IDLE_ENABLE
1023	array_free (idle, [i]);	1357	array_free (idle, [i]);
1024	#endif	1358	#endif
1025	}	1359	}
		1360
		1361	ev_free (anfds); anfdmax = 0;
1026		1362
1027	/* have to use the microsoft-never-gets-it-right macro */	1363	/* have to use the microsoft-never-gets-it-right macro */
1028	array_free (fdchange, EMPTY);	1364	array_free (fdchange, EMPTY);
1029	array_free (timer, EMPTY);	1365	array_free (timer, EMPTY);
1030	#if EV_PERIODIC_ENABLE	1366	#if EV_PERIODIC_ENABLE
1031	array_free (periodic, EMPTY);	1367	array_free (periodic, EMPTY);
1032	#endif	1368	#endif
		1369	#if EV_FORK_ENABLE
		1370	array_free (fork, EMPTY);
		1371	#endif
1033	array_free (prepare, EMPTY);	1372	array_free (prepare, EMPTY);
1034	array_free (check, EMPTY);	1373	array_free (check, EMPTY);
		1374	#if EV_ASYNC_ENABLE
		1375	array_free (async, EMPTY);
		1376	#endif
1035		1377
1036	backend = 0;	1378	backend = 0;
1037	}	1379	}
1038		1380
		1381	#if EV_USE_INOTIFY
1039	void inline_size infy_fork (EV_P);	1382	void inline_size infy_fork (EV_P);
		1383	#endif
1040		1384
1041	void inline_size	1385	void inline_size
1042	loop_fork (EV_P)	1386	loop_fork (EV_P)
1043	{	1387	{
1044	#if EV_USE_PORT	1388	#if EV_USE_PORT
…		…
1052	#endif	1396	#endif
1053	#if EV_USE_INOTIFY	1397	#if EV_USE_INOTIFY
1054	infy_fork (EV_A);	1398	infy_fork (EV_A);
1055	#endif	1399	#endif
1056		1400
1057	if (ev_is_active (&sigev))	1401	if (ev_is_active (&pipeev))
1058	{	1402	{
1059	/* default loop */	1403	/* this "locks" the handlers against writing to the pipe */
		1404	/* while we modify the fd vars */
		1405	gotsig = 1;
		1406	#if EV_ASYNC_ENABLE
		1407	gotasync = 1;
		1408	#endif
1060		1409
1061	ev_ref (EV_A);	1410	ev_ref (EV_A);
1062	ev_io_stop (EV_A_ &sigev);	1411	ev_io_stop (EV_A_ &pipeev);
		1412
		1413	#if EV_USE_EVENTFD
		1414	if (evfd >= 0)
		1415	close (evfd);
		1416	#endif
		1417
		1418	if (evpipe [0] >= 0)
		1419	{
1063	close (sigpipe [0]);	1420	close (evpipe [0]);
1064	close (sigpipe [1]);	1421	close (evpipe [1]);
		1422	}
1065		1423
1066	while (pipe (sigpipe))
1067	syserr ("(libev) error creating pipe");
1068
1069	siginit (EV_A);	1424	evpipe_init (EV_A);
		1425	/* now iterate over everything, in case we missed something */
		1426	pipecb (EV_A_ &pipeev, EV_READ);
1070	}	1427	}
1071		1428
1072	postfork = 0;	1429	postfork = 0;
1073	}	1430	}
1074		1431
…		…
1096	}	1453	}
1097		1454
1098	void	1455	void
1099	ev_loop_fork (EV_P)	1456	ev_loop_fork (EV_P)
1100	{	1457	{
1101	postfork = 1;	1458	postfork = 1; /* must be in line with ev_default_fork */
1102	}	1459	}
1103
1104	#endif	1460	#endif
1105		1461
1106	#if EV_MULTIPLICITY	1462	#if EV_MULTIPLICITY
1107	struct ev_loop *	1463	struct ev_loop *
1108	ev_default_loop_init (unsigned int flags)	1464	ev_default_loop_init (unsigned int flags)
1109	#else	1465	#else
1110	int	1466	int
1111	ev_default_loop (unsigned int flags)	1467	ev_default_loop (unsigned int flags)
1112	#endif	1468	#endif
1113	{	1469	{
1114	if (sigpipe [0] == sigpipe [1])
1115	if (pipe (sigpipe))
1116	return 0;
1117
1118	if (!ev_default_loop_ptr)	1470	if (!ev_default_loop_ptr)
1119	{	1471	{
1120	#if EV_MULTIPLICITY	1472	#if EV_MULTIPLICITY
1121	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1473	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1122	#else	1474	#else
…		…
1125		1477
1126	loop_init (EV_A_ flags);	1478	loop_init (EV_A_ flags);
1127		1479
1128	if (ev_backend (EV_A))	1480	if (ev_backend (EV_A))
1129	{	1481	{
1130	siginit (EV_A);
1131
1132	#ifndef _WIN32	1482	#ifndef _WIN32
1133	ev_signal_init (&childev, childcb, SIGCHLD);	1483	ev_signal_init (&childev, childcb, SIGCHLD);
1134	ev_set_priority (&childev, EV_MAXPRI);	1484	ev_set_priority (&childev, EV_MAXPRI);
1135	ev_signal_start (EV_A_ &childev);	1485	ev_signal_start (EV_A_ &childev);
1136	ev_unref (EV_A); /* child watcher should not keep loop alive */	1486	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1153	#ifndef _WIN32	1503	#ifndef _WIN32
1154	ev_ref (EV_A); /* child watcher */	1504	ev_ref (EV_A); /* child watcher */
1155	ev_signal_stop (EV_A_ &childev);	1505	ev_signal_stop (EV_A_ &childev);
1156	#endif	1506	#endif
1157		1507
1158	ev_ref (EV_A); /* signal watcher */
1159	ev_io_stop (EV_A_ &sigev);
1160
1161	close (sigpipe [0]); sigpipe [0] = 0;
1162	close (sigpipe [1]); sigpipe [1] = 0;
1163
1164	loop_destroy (EV_A);	1508	loop_destroy (EV_A);
1165	}	1509	}
1166		1510
1167	void	1511	void
1168	ev_default_fork (void)	1512	ev_default_fork (void)
…		…
1170	#if EV_MULTIPLICITY	1514	#if EV_MULTIPLICITY
1171	struct ev_loop *loop = ev_default_loop_ptr;	1515	struct ev_loop *loop = ev_default_loop_ptr;
1172	#endif	1516	#endif
1173		1517
1174	if (backend)	1518	if (backend)
1175	postfork = 1;	1519	postfork = 1; /* must be in line with ev_loop_fork */
1176	}	1520	}
1177		1521
1178	/*****************************************************************************/	1522	/*****************************************************************************/
1179		1523
1180	void	1524	void
…		…
1200	p->w->pending = 0;	1544	p->w->pending = 0;
1201	EV_CB_INVOKE (p->w, p->events);	1545	EV_CB_INVOKE (p->w, p->events);
1202	}	1546	}
1203	}	1547	}
1204	}	1548	}
1205
1206	void inline_size
1207	timers_reify (EV_P)
1208	{
1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1210	{
1211	ev_timer *w = timers [0];
1212
1213	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1214
1215	/* first reschedule or stop timer */
1216	if (w->repeat)
1217	{
1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1219
1220	((WT)w)->at += w->repeat;
1221	if (((WT)w)->at < mn_now)
1222	((WT)w)->at = mn_now;
1223
1224	downheap ((WT *)timers, timercnt, 0);
1225	}
1226	else
1227	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1228
1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1230	}
1231	}
1232
1233	#if EV_PERIODIC_ENABLE
1234	void inline_size
1235	periodics_reify (EV_P)
1236	{
1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1238	{
1239	ev_periodic *w = periodics [0];
1240
1241	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1242
1243	/* first reschedule or stop timer */
1244	if (w->reschedule_cb)
1245	{
1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1248	downheap ((WT *)periodics, periodiccnt, 0);
1249	}
1250	else if (w->interval)
1251	{
1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1255	downheap ((WT *)periodics, periodiccnt, 0);
1256	}
1257	else
1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1259
1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1261	}
1262	}
1263
1264	static void noinline
1265	periodics_reschedule (EV_P)
1266	{
1267	int i;
1268
1269	/* adjust periodics after time jump */
1270	for (i = 0; i < periodiccnt; ++i)
1271	{
1272	ev_periodic *w = periodics [i];
1273
1274	if (w->reschedule_cb)
1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1276	else if (w->interval)
1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278	}
1279
1280	/* now rebuild the heap */
1281	for (i = periodiccnt >> 1; i--; )
1282	downheap ((WT *)periodics, periodiccnt, i);
1283	}
1284	#endif
1285		1549
1286	#if EV_IDLE_ENABLE	1550	#if EV_IDLE_ENABLE
1287	void inline_size	1551	void inline_size
1288	idle_reify (EV_P)	1552	idle_reify (EV_P)
1289	{	1553	{
…		…
1304	}	1568	}
1305	}	1569	}
1306	}	1570	}
1307	#endif	1571	#endif
1308		1572
1309	int inline_size	1573	void inline_size
1310	time_update_monotonic (EV_P)	1574	timers_reify (EV_P)
1311	{	1575	{
		1576	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
		1577	{
		1578	ev_timer w = (ev_timer )timers [HEAP0];
		1579
		1580	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
		1581
		1582	/* first reschedule or stop timer */
		1583	if (w->repeat)
		1584	{
		1585	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1586
		1587	ev_at (w) += w->repeat;
		1588	if (ev_at (w) < mn_now)
		1589	ev_at (w) = mn_now;
		1590
		1591	downheap (timers, timercnt, HEAP0);
		1592	}
		1593	else
		1594	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1595
		1596	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1597	}
		1598	}
		1599
		1600	#if EV_PERIODIC_ENABLE
		1601	void inline_size
		1602	periodics_reify (EV_P)
		1603	{
		1604	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
		1605	{
		1606	ev_periodic w = (ev_periodic )periodics [HEAP0];
		1607
		1608	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
		1609
		1610	/* first reschedule or stop timer */
		1611	if (w->reschedule_cb)
		1612	{
		1613	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1614	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1615	downheap (periodics, periodiccnt, 1);
		1616	}
		1617	else if (w->interval)
		1618	{
		1619	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1620	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1621	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1622	downheap (periodics, periodiccnt, HEAP0);
		1623	}
		1624	else
		1625	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1626
		1627	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1628	}
		1629	}
		1630
		1631	static void noinline
		1632	periodics_reschedule (EV_P)
		1633	{
		1634	int i;
		1635
		1636	/* adjust periodics after time jump */
		1637	for (i = 1; i <= periodiccnt; ++i)
		1638	{
		1639	ev_periodic w = (ev_periodic )periodics [i];
		1640
		1641	if (w->reschedule_cb)
		1642	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1643	else if (w->interval)
		1644	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1645	}
		1646
		1647	/* now rebuild the heap */
		1648	for (i = periodiccnt >> 1; --i; )
		1649	downheap (periodics, periodiccnt, i + HEAP0);
		1650	}
		1651	#endif
		1652
		1653	void inline_speed
		1654	time_update (EV_P_ ev_tstamp max_block)
		1655	{
		1656	int i;
		1657
		1658	#if EV_USE_MONOTONIC
		1659	if (expect_true (have_monotonic))
		1660	{
		1661	ev_tstamp odiff = rtmn_diff;
		1662
1312	mn_now = get_clock ();	1663	mn_now = get_clock ();
1313		1664
		1665	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1666	/* interpolate in the meantime */
1314	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1667	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1315	{	1668	{
1316	ev_rt_now = rtmn_diff + mn_now;	1669	ev_rt_now = rtmn_diff + mn_now;
1317	return 0;	1670	return;
1318	}	1671	}
1319	else	1672
1320	{
1321	now_floor = mn_now;	1673	now_floor = mn_now;
1322	ev_rt_now = ev_time ();	1674	ev_rt_now = ev_time ();
1323	return 1;
1324	}
1325	}
1326		1675
1327	void inline_size	1676	/* loop a few times, before making important decisions.
1328	time_update (EV_P)	1677	* on the choice of "4": one iteration isn't enough,
1329	{	1678	* in case we get preempted during the calls to
1330	int i;	1679	* ev_time and get_clock. a second call is almost guaranteed
1331		1680	* to succeed in that case, though. and looping a few more times
1332	#if EV_USE_MONOTONIC	1681	* doesn't hurt either as we only do this on time-jumps or
1333	if (expect_true (have_monotonic))	1682	* in the unlikely event of having been preempted here.
1334	{	1683	*/
1335	if (time_update_monotonic (EV_A))	1684	for (i = 4; --i; )
1336	{	1685	{
1337	ev_tstamp odiff = rtmn_diff;
1338
1339	/* loop a few times, before making important decisions.
1340	* on the choice of "4": one iteration isn't enough,
1341	* in case we get preempted during the calls to
1342	* ev_time and get_clock. a second call is almost guaranteed
1343	* to succeed in that case, though. and looping a few more times
1344	* doesn't hurt either as we only do this on time-jumps or
1345	* in the unlikely event of having been preempted here.
1346	*/
1347	for (i = 4; --i; )
1348	{
1349	rtmn_diff = ev_rt_now - mn_now;	1686	rtmn_diff = ev_rt_now - mn_now;
1350		1687
1351	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1688	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1352	return; /* all is well */	1689	return; /* all is well */
1353		1690
1354	ev_rt_now = ev_time ();	1691	ev_rt_now = ev_time ();
1355	mn_now = get_clock ();	1692	mn_now = get_clock ();
1356	now_floor = mn_now;	1693	now_floor = mn_now;
1357	}	1694	}
1358		1695
1359	# if EV_PERIODIC_ENABLE	1696	# if EV_PERIODIC_ENABLE
1360	periodics_reschedule (EV_A);	1697	periodics_reschedule (EV_A);
1361	# endif	1698	# endif
1362	/* no timer adjustment, as the monotonic clock doesn't jump */	1699	/* no timer adjustment, as the monotonic clock doesn't jump */
1363	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1700	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1364	}
1365	}	1701	}
1366	else	1702	else
1367	#endif	1703	#endif
1368	{	1704	{
1369	ev_rt_now = ev_time ();	1705	ev_rt_now = ev_time ();
1370		1706
1371	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1707	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1372	{	1708	{
1373	#if EV_PERIODIC_ENABLE	1709	#if EV_PERIODIC_ENABLE
1374	periodics_reschedule (EV_A);	1710	periodics_reschedule (EV_A);
1375	#endif	1711	#endif
1376	/* adjust timers. this is easy, as the offset is the same for all of them */	1712	/* adjust timers. this is easy, as the offset is the same for all of them */
1377	for (i = 0; i < timercnt; ++i)	1713	for (i = 1; i <= timercnt; ++i)
1378	((WT)timers [i])->at += ev_rt_now - mn_now;	1714	ev_at (timers [i]) += ev_rt_now - mn_now;
1379	}	1715	}
1380		1716
1381	mn_now = ev_rt_now;	1717	mn_now = ev_rt_now;
1382	}	1718	}
1383	}	1719	}
…		…
1397	static int loop_done;	1733	static int loop_done;
1398		1734
1399	void	1735	void
1400	ev_loop (EV_P_ int flags)	1736	ev_loop (EV_P_ int flags)
1401	{	1737	{
1402	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1738	loop_done = EVUNLOOP_CANCEL;
1403	? EVUNLOOP_ONE
1404	: EVUNLOOP_CANCEL;
1405		1739
1406	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1740	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1407		1741
1408	do	1742	do
1409	{	1743	{
…		…
1443	/* update fd-related kernel structures */	1777	/* update fd-related kernel structures */
1444	fd_reify (EV_A);	1778	fd_reify (EV_A);
1445		1779
1446	/* calculate blocking time */	1780	/* calculate blocking time */
1447	{	1781	{
1448	ev_tstamp block;	1782	ev_tstamp waittime = 0.;
		1783	ev_tstamp sleeptime = 0.;
1449		1784
1450	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1785	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1451	block = 0.; /* do not block at all */
1452	else
1453	{	1786	{
1454	/* update time to cancel out callback processing overhead */	1787	/* update time to cancel out callback processing overhead */
1455	#if EV_USE_MONOTONIC
1456	if (expect_true (have_monotonic))
1457	time_update_monotonic (EV_A);	1788	time_update (EV_A_ 1e100);
1458	else
1459	#endif
1460	{
1461	ev_rt_now = ev_time ();
1462	mn_now = ev_rt_now;
1463	}
1464		1789
1465	block = MAX_BLOCKTIME;	1790	waittime = MAX_BLOCKTIME;
1466		1791
1467	if (timercnt)	1792	if (timercnt)
1468	{	1793	{
1469	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1794	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1470	if (block > to) block = to;	1795	if (waittime > to) waittime = to;
1471	}	1796	}
1472		1797
1473	#if EV_PERIODIC_ENABLE	1798	#if EV_PERIODIC_ENABLE
1474	if (periodiccnt)	1799	if (periodiccnt)
1475	{	1800	{
1476	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1801	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1477	if (block > to) block = to;	1802	if (waittime > to) waittime = to;
1478	}	1803	}
1479	#endif	1804	#endif
1480		1805
1481	if (expect_false (block < 0.)) block = 0.;	1806	if (expect_false (waittime < timeout_blocktime))
		1807	waittime = timeout_blocktime;
		1808
		1809	sleeptime = waittime - backend_fudge;
		1810
		1811	if (expect_true (sleeptime > io_blocktime))
		1812	sleeptime = io_blocktime;
		1813
		1814	if (sleeptime)
		1815	{
		1816	ev_sleep (sleeptime);
		1817	waittime -= sleeptime;
		1818	}
1482	}	1819	}
1483		1820
1484	++loop_count;	1821	++loop_count;
1485	backend_poll (EV_A_ block);	1822	backend_poll (EV_A_ waittime);
		1823
		1824	/* update ev_rt_now, do magic */
		1825	time_update (EV_A_ waittime + sleeptime);
1486	}	1826	}
1487
1488	/* update ev_rt_now, do magic */
1489	time_update (EV_A);
1490		1827
1491	/* queue pending timers and reschedule them */	1828	/* queue pending timers and reschedule them */
1492	timers_reify (EV_A); /* relative timers called last */	1829	timers_reify (EV_A); /* relative timers called last */
1493	#if EV_PERIODIC_ENABLE	1830	#if EV_PERIODIC_ENABLE
1494	periodics_reify (EV_A); /* absolute timers called first */	1831	periodics_reify (EV_A); /* absolute timers called first */
…		…
1502	/* queue check watchers, to be executed first */	1839	/* queue check watchers, to be executed first */
1503	if (expect_false (checkcnt))	1840	if (expect_false (checkcnt))
1504	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1841	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1505		1842
1506	call_pending (EV_A);	1843	call_pending (EV_A);
1507
1508	}	1844	}
1509	while (expect_true (activecnt && !loop_done));	1845	while (expect_true (
		1846	activecnt
		1847	&& !loop_done
		1848	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1849	));
1510		1850
1511	if (loop_done == EVUNLOOP_ONE)	1851	if (loop_done == EVUNLOOP_ONE)
1512	loop_done = EVUNLOOP_CANCEL;	1852	loop_done = EVUNLOOP_CANCEL;
1513	}	1853	}
1514		1854
…		…
1605		1945
1606	assert (("ev_io_start called with negative fd", fd >= 0));	1946	assert (("ev_io_start called with negative fd", fd >= 0));
1607		1947
1608	ev_start (EV_A_ (W)w, 1);	1948	ev_start (EV_A_ (W)w, 1);
1609	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1949	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1610	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1950	wlist_add (&anfds[fd].head, (WL)w);
1611		1951
1612	fd_change (EV_A_ fd);	1952	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1953	w->events &= ~EV_IOFDSET;
1613	}	1954	}
1614		1955
1615	void noinline	1956	void noinline
1616	ev_io_stop (EV_P_ ev_io *w)	1957	ev_io_stop (EV_P_ ev_io *w)
1617	{	1958	{
…		…
1619	if (expect_false (!ev_is_active (w)))	1960	if (expect_false (!ev_is_active (w)))
1620	return;	1961	return;
1621		1962
1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1963	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1623		1964
1624	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1965	wlist_del (&anfds[w->fd].head, (WL)w);
1625	ev_stop (EV_A_ (W)w);	1966	ev_stop (EV_A_ (W)w);
1626		1967
1627	fd_change (EV_A_ w->fd);	1968	fd_change (EV_A_ w->fd, 1);
1628	}	1969	}
1629		1970
1630	void noinline	1971	void noinline
1631	ev_timer_start (EV_P_ ev_timer *w)	1972	ev_timer_start (EV_P_ ev_timer *w)
1632	{	1973	{
1633	if (expect_false (ev_is_active (w)))	1974	if (expect_false (ev_is_active (w)))
1634	return;	1975	return;
1635		1976
1636	((WT)w)->at += mn_now;	1977	ev_at (w) += mn_now;
1637		1978
1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1979	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1639		1980
1640	ev_start (EV_A_ (W)w, ++timercnt);	1981	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1641	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1982	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1642	timers [timercnt - 1] = w;	1983	timers [ev_active (w)] = (WT)w;
1643	upheap ((WT *)timers, timercnt - 1);	1984	upheap (timers, ev_active (w));
1644		1985
1645	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1986	/assert (("internal timer heap corruption", timers [ev_active (w)] == w));/
1646	}	1987	}
1647		1988
1648	void noinline	1989	void noinline
1649	ev_timer_stop (EV_P_ ev_timer *w)	1990	ev_timer_stop (EV_P_ ev_timer *w)
1650	{	1991	{
1651	clear_pending (EV_A_ (W)w);	1992	clear_pending (EV_A_ (W)w);
1652	if (expect_false (!ev_is_active (w)))	1993	if (expect_false (!ev_is_active (w)))
1653	return;	1994	return;
1654		1995
1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1656
1657	{	1996	{
1658	int active = ((W)w)->active;	1997	int active = ev_active (w);
1659		1998
		1999	assert (("internal timer heap corruption", timers [active] == (WT)w));
		2000
1660	if (expect_true (--active < --timercnt))	2001	if (expect_true (active < timercnt + HEAP0 - 1))
1661	{	2002	{
1662	timers [active] = timers [timercnt];	2003	timers [active] = timers [timercnt + HEAP0 - 1];
1663	adjustheap ((WT *)timers, timercnt, active);	2004	adjustheap (timers, timercnt, active);
1664	}	2005	}
		2006
		2007	--timercnt;
1665	}	2008	}
1666		2009
1667	((WT)w)->at -= mn_now;	2010	ev_at (w) -= mn_now;
1668		2011
1669	ev_stop (EV_A_ (W)w);	2012	ev_stop (EV_A_ (W)w);
1670	}	2013	}
1671		2014
1672	void noinline	2015	void noinline
…		…
1674	{	2017	{
1675	if (ev_is_active (w))	2018	if (ev_is_active (w))
1676	{	2019	{
1677	if (w->repeat)	2020	if (w->repeat)
1678	{	2021	{
1679	((WT)w)->at = mn_now + w->repeat;	2022	ev_at (w) = mn_now + w->repeat;
1680	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2023	adjustheap (timers, timercnt, ev_active (w));
1681	}	2024	}
1682	else	2025	else
1683	ev_timer_stop (EV_A_ w);	2026	ev_timer_stop (EV_A_ w);
1684	}	2027	}
1685	else if (w->repeat)	2028	else if (w->repeat)
1686	{	2029	{
1687	w->at = w->repeat;	2030	ev_at (w) = w->repeat;
1688	ev_timer_start (EV_A_ w);	2031	ev_timer_start (EV_A_ w);
1689	}	2032	}
1690	}	2033	}
1691		2034
1692	#if EV_PERIODIC_ENABLE	2035	#if EV_PERIODIC_ENABLE
…		…
1695	{	2038	{
1696	if (expect_false (ev_is_active (w)))	2039	if (expect_false (ev_is_active (w)))
1697	return;	2040	return;
1698		2041
1699	if (w->reschedule_cb)	2042	if (w->reschedule_cb)
1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2043	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1701	else if (w->interval)	2044	else if (w->interval)
1702	{	2045	{
1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2046	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 */	2047	/* 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;	2048	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1706	}	2049	}
1707	else	2050	else
1708	((WT)w)->at = w->offset;	2051	ev_at (w) = w->offset;
1709		2052
1710	ev_start (EV_A_ (W)w, ++periodiccnt);	2053	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1711	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2054	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1712	periodics [periodiccnt - 1] = w;	2055	periodics [ev_active (w)] = (WT)w;
1713	upheap ((WT *)periodics, periodiccnt - 1);	2056	upheap (periodics, ev_active (w));
1714		2057
1715	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	2058	/assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));/
1716	}	2059	}
1717		2060
1718	void noinline	2061	void noinline
1719	ev_periodic_stop (EV_P_ ev_periodic *w)	2062	ev_periodic_stop (EV_P_ ev_periodic *w)
1720	{	2063	{
1721	clear_pending (EV_A_ (W)w);	2064	clear_pending (EV_A_ (W)w);
1722	if (expect_false (!ev_is_active (w)))	2065	if (expect_false (!ev_is_active (w)))
1723	return;	2066	return;
1724		2067
1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1726
1727	{	2068	{
1728	int active = ((W)w)->active;	2069	int active = ev_active (w);
1729		2070
		2071	assert (("internal periodic heap corruption", periodics [active] == (WT)w));
		2072
1730	if (expect_true (--active < --periodiccnt))	2073	if (expect_true (active < periodiccnt + HEAP0 - 1))
1731	{	2074	{
1732	periodics [active] = periodics [periodiccnt];	2075	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1733	adjustheap ((WT *)periodics, periodiccnt, active);	2076	adjustheap (periodics, periodiccnt, active);
1734	}	2077	}
		2078
		2079	--periodiccnt;
1735	}	2080	}
1736		2081
1737	ev_stop (EV_A_ (W)w);	2082	ev_stop (EV_A_ (W)w);
1738	}	2083	}
1739		2084
…		…
1759	if (expect_false (ev_is_active (w)))	2104	if (expect_false (ev_is_active (w)))
1760	return;	2105	return;
1761		2106
1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2107	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1763		2108
		2109	evpipe_init (EV_A);
		2110
		2111	{
		2112	#ifndef _WIN32
		2113	sigset_t full, prev;
		2114	sigfillset (&full);
		2115	sigprocmask (SIG_SETMASK, &full, &prev);
		2116	#endif
		2117
		2118	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2119
		2120	#ifndef _WIN32
		2121	sigprocmask (SIG_SETMASK, &prev, 0);
		2122	#endif
		2123	}
		2124
1764	ev_start (EV_A_ (W)w, 1);	2125	ev_start (EV_A_ (W)w, 1);
1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1766	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2126	wlist_add (&signals [w->signum - 1].head, (WL)w);
1767		2127
1768	if (!((WL)w)->next)	2128	if (!((WL)w)->next)
1769	{	2129	{
1770	#if _WIN32	2130	#if _WIN32
1771	signal (w->signum, sighandler);	2131	signal (w->signum, ev_sighandler);
1772	#else	2132	#else
1773	struct sigaction sa;	2133	struct sigaction sa;
1774	sa.sa_handler = sighandler;	2134	sa.sa_handler = ev_sighandler;
1775	sigfillset (&sa.sa_mask);	2135	sigfillset (&sa.sa_mask);
1776	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2136	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1777	sigaction (w->signum, &sa, 0);	2137	sigaction (w->signum, &sa, 0);
1778	#endif	2138	#endif
1779	}	2139	}
…		…
1784	{	2144	{
1785	clear_pending (EV_A_ (W)w);	2145	clear_pending (EV_A_ (W)w);
1786	if (expect_false (!ev_is_active (w)))	2146	if (expect_false (!ev_is_active (w)))
1787	return;	2147	return;
1788		2148
1789	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2149	wlist_del (&signals [w->signum - 1].head, (WL)w);
1790	ev_stop (EV_A_ (W)w);	2150	ev_stop (EV_A_ (W)w);
1791		2151
1792	if (!signals [w->signum - 1].head)	2152	if (!signals [w->signum - 1].head)
1793	signal (w->signum, SIG_DFL);	2153	signal (w->signum, SIG_DFL);
1794	}	2154	}
…		…
1801	#endif	2161	#endif
1802	if (expect_false (ev_is_active (w)))	2162	if (expect_false (ev_is_active (w)))
1803	return;	2163	return;
1804		2164
1805	ev_start (EV_A_ (W)w, 1);	2165	ev_start (EV_A_ (W)w, 1);
1806	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2166	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1807	}	2167	}
1808		2168
1809	void	2169	void
1810	ev_child_stop (EV_P_ ev_child *w)	2170	ev_child_stop (EV_P_ ev_child *w)
1811	{	2171	{
1812	clear_pending (EV_A_ (W)w);	2172	clear_pending (EV_A_ (W)w);
1813	if (expect_false (!ev_is_active (w)))	2173	if (expect_false (!ev_is_active (w)))
1814	return;	2174	return;
1815		2175
1816	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2176	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1817	ev_stop (EV_A_ (W)w);	2177	ev_stop (EV_A_ (W)w);
1818	}	2178	}
1819		2179
1820	#if EV_STAT_ENABLE	2180	#if EV_STAT_ENABLE
1821		2181
…		…
1840	if (w->wd < 0)	2200	if (w->wd < 0)
1841	{	2201	{
1842	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2202	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1843		2203
1844	/* monitor some parent directory for speedup hints */	2204	/* monitor some parent directory for speedup hints */
		2205	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2206	/* but an efficiency issue only */
1845	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2207	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
1846	{	2208	{
1847	char path [4096];	2209	char path [4096];
1848	strcpy (path, w->path);	2210	strcpy (path, w->path);
1849		2211
…		…
2094	clear_pending (EV_A_ (W)w);	2456	clear_pending (EV_A_ (W)w);
2095	if (expect_false (!ev_is_active (w)))	2457	if (expect_false (!ev_is_active (w)))
2096	return;	2458	return;
2097		2459
2098	{	2460	{
2099	int active = ((W)w)->active;	2461	int active = ev_active (w);
2100		2462
2101	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2463	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2102	((W)idles [ABSPRI (w)][active - 1])->active = active;	2464	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2103		2465
2104	ev_stop (EV_A_ (W)w);	2466	ev_stop (EV_A_ (W)w);
2105	--idleall;	2467	--idleall;
2106	}	2468	}
2107	}	2469	}
…		…
2124	clear_pending (EV_A_ (W)w);	2486	clear_pending (EV_A_ (W)w);
2125	if (expect_false (!ev_is_active (w)))	2487	if (expect_false (!ev_is_active (w)))
2126	return;	2488	return;
2127		2489
2128	{	2490	{
2129	int active = ((W)w)->active;	2491	int active = ev_active (w);
		2492
2130	prepares [active - 1] = prepares [--preparecnt];	2493	prepares [active - 1] = prepares [--preparecnt];
2131	((W)prepares [active - 1])->active = active;	2494	ev_active (prepares [active - 1]) = active;
2132	}	2495	}
2133		2496
2134	ev_stop (EV_A_ (W)w);	2497	ev_stop (EV_A_ (W)w);
2135	}	2498	}
2136		2499
…		…
2151	clear_pending (EV_A_ (W)w);	2514	clear_pending (EV_A_ (W)w);
2152	if (expect_false (!ev_is_active (w)))	2515	if (expect_false (!ev_is_active (w)))
2153	return;	2516	return;
2154		2517
2155	{	2518	{
2156	int active = ((W)w)->active;	2519	int active = ev_active (w);
		2520
2157	checks [active - 1] = checks [--checkcnt];	2521	checks [active - 1] = checks [--checkcnt];
2158	((W)checks [active - 1])->active = active;	2522	ev_active (checks [active - 1]) = active;
2159	}	2523	}
2160		2524
2161	ev_stop (EV_A_ (W)w);	2525	ev_stop (EV_A_ (W)w);
2162	}	2526	}
2163		2527
2164	#if EV_EMBED_ENABLE	2528	#if EV_EMBED_ENABLE
2165	void noinline	2529	void noinline
2166	ev_embed_sweep (EV_P_ ev_embed *w)	2530	ev_embed_sweep (EV_P_ ev_embed *w)
2167	{	2531	{
2168	ev_loop (w->loop, EVLOOP_NONBLOCK);	2532	ev_loop (w->other, EVLOOP_NONBLOCK);
2169	}	2533	}
2170		2534
2171	static void	2535	static void
2172	embed_cb (EV_P_ ev_io *io, int revents)	2536	embed_io_cb (EV_P_ ev_io *io, int revents)
2173	{	2537	{
2174	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2538	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2175		2539
2176	if (ev_cb (w))	2540	if (ev_cb (w))
2177	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2541	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2178	else	2542	else
2179	ev_embed_sweep (loop, w);	2543	ev_loop (w->other, EVLOOP_NONBLOCK);
2180	}	2544	}
		2545
		2546	static void
		2547	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2548	{
		2549	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2550
		2551	{
		2552	struct ev_loop *loop = w->other;
		2553
		2554	while (fdchangecnt)
		2555	{
		2556	fd_reify (EV_A);
		2557	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2558	}
		2559	}
		2560	}
		2561
		2562	#if 0
		2563	static void
		2564	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2565	{
		2566	ev_idle_stop (EV_A_ idle);
		2567	}
		2568	#endif
2181		2569
2182	void	2570	void
2183	ev_embed_start (EV_P_ ev_embed *w)	2571	ev_embed_start (EV_P_ ev_embed *w)
2184	{	2572	{
2185	if (expect_false (ev_is_active (w)))	2573	if (expect_false (ev_is_active (w)))
2186	return;	2574	return;
2187		2575
2188	{	2576	{
2189	struct ev_loop *loop = w->loop;	2577	struct ev_loop *loop = w->other;
2190	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2578	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2191	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2579	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2192	}	2580	}
2193		2581
2194	ev_set_priority (&w->io, ev_priority (w));	2582	ev_set_priority (&w->io, ev_priority (w));
2195	ev_io_start (EV_A_ &w->io);	2583	ev_io_start (EV_A_ &w->io);
		2584
		2585	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2586	ev_set_priority (&w->prepare, EV_MINPRI);
		2587	ev_prepare_start (EV_A_ &w->prepare);
		2588
		2589	/ev_idle_init (&w->idle, e,bed_idle_cb);/
2196		2590
2197	ev_start (EV_A_ (W)w, 1);	2591	ev_start (EV_A_ (W)w, 1);
2198	}	2592	}
2199		2593
2200	void	2594	void
…		…
2203	clear_pending (EV_A_ (W)w);	2597	clear_pending (EV_A_ (W)w);
2204	if (expect_false (!ev_is_active (w)))	2598	if (expect_false (!ev_is_active (w)))
2205	return;	2599	return;
2206		2600
2207	ev_io_stop (EV_A_ &w->io);	2601	ev_io_stop (EV_A_ &w->io);
		2602	ev_prepare_stop (EV_A_ &w->prepare);
2208		2603
2209	ev_stop (EV_A_ (W)w);	2604	ev_stop (EV_A_ (W)w);
2210	}	2605	}
2211	#endif	2606	#endif
2212		2607
…		…
2228	clear_pending (EV_A_ (W)w);	2623	clear_pending (EV_A_ (W)w);
2229	if (expect_false (!ev_is_active (w)))	2624	if (expect_false (!ev_is_active (w)))
2230	return;	2625	return;
2231		2626
2232	{	2627	{
2233	int active = ((W)w)->active;	2628	int active = ev_active (w);
		2629
2234	forks [active - 1] = forks [--forkcnt];	2630	forks [active - 1] = forks [--forkcnt];
2235	((W)forks [active - 1])->active = active;	2631	ev_active (forks [active - 1]) = active;
2236	}	2632	}
2237		2633
2238	ev_stop (EV_A_ (W)w);	2634	ev_stop (EV_A_ (W)w);
		2635	}
		2636	#endif
		2637
		2638	#if EV_ASYNC_ENABLE
		2639	void
		2640	ev_async_start (EV_P_ ev_async *w)
		2641	{
		2642	if (expect_false (ev_is_active (w)))
		2643	return;
		2644
		2645	evpipe_init (EV_A);
		2646
		2647	ev_start (EV_A_ (W)w, ++asynccnt);
		2648	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2649	asyncs [asynccnt - 1] = w;
		2650	}
		2651
		2652	void
		2653	ev_async_stop (EV_P_ ev_async *w)
		2654	{
		2655	clear_pending (EV_A_ (W)w);
		2656	if (expect_false (!ev_is_active (w)))
		2657	return;
		2658
		2659	{
		2660	int active = ev_active (w);
		2661
		2662	asyncs [active - 1] = asyncs [--asynccnt];
		2663	ev_active (asyncs [active - 1]) = active;
		2664	}
		2665
		2666	ev_stop (EV_A_ (W)w);
		2667	}
		2668
		2669	void
		2670	ev_async_send (EV_P_ ev_async *w)
		2671	{
		2672	w->sent = 1;
		2673	evpipe_write (EV_A_ &gotasync);
2239	}	2674	}
2240	#endif	2675	#endif
2241		2676
2242	/*****************************************************************************/	2677	/*****************************************************************************/
2243		2678
…		…
2301	ev_timer_set (&once->to, timeout, 0.);	2736	ev_timer_set (&once->to, timeout, 0.);
2302	ev_timer_start (EV_A_ &once->to);	2737	ev_timer_start (EV_A_ &once->to);
2303	}	2738	}
2304	}	2739	}
2305		2740
		2741	#if EV_MULTIPLICITY
		2742	#include "ev_wrap.h"
		2743	#endif
		2744
2306	#ifdef __cplusplus	2745	#ifdef __cplusplus
2307	}	2746	}
2308	#endif	2747	#endif
2309		2748

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Comparing libev/ev.c (file contents): Revision 1.177 by root, Tue Dec 11 15:06:50 2007 UTC vs. Revision 1.239 by root, Thu May 8 20:52:13 2008 UTC

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Comparing libev/ev.c (file contents):
Revision 1.177 by root, Tue Dec 11 15:06:50 2007 UTC vs.
Revision 1.239 by root, Thu May 8 20:52:13 2008 UTC