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

Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.238 by root, Thu May 8 20:49:12 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	#define USE_4HEAP 1/* they do not work corretcly */
		772	#if USE_4HEAP
		773
		774	#define DHEAP 4
		775	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		776
		777	/* towards the root */
638	void inline_speed	778	void inline_speed
639	upheap (WT *heap, int k)	779	upheap (WT *heap, int k)
640	{	780	{
641	WT w = heap [k];	781	WT w = heap [k];
642		782
643	while (k && heap [k >> 1]->at > w->at)	783	for (;;)
644	{	784	{
		785	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
		786
		787	if (p == k \|\| heap [p]->at <= w->at)
		788	break;
		789
645	heap [k] = heap [k >> 1];	790	heap [k] = heap [p];
646	((W)heap [k])->active = k + 1;	791	ev_active (heap [k]) = k;
647	k >>= 1;	792	k = p;
648	}	793	}
649		794
650	heap [k] = w;	795	heap [k] = w;
651	((W)heap [k])->active = k + 1;	796	ev_active (heap [k]) = k;
652
653	}	797	}
654		798
		799	/* away from the root */
655	void inline_speed	800	void inline_speed
656	downheap (WT *heap, int N, int k)	801	downheap (WT *heap, int N, int k)
657	{	802	{
658	WT w = heap [k];	803	WT w = heap [k];
		804	WT *E = heap + N + HEAP0;
659		805
660	while (k < (N >> 1))	806	for (;;)
661	{	807	{
662	int j = k << 1;	808	ev_tstamp minat;
		809	WT *minpos;
		810	WT pos = heap + DHEAP (k - HEAP0) + HEAP0;
663		811
664	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	812	// find minimum child
		813	if (expect_true (pos + DHEAP - 1 < E))
665	++j;	814	{
		815	/* fast path */
		816	(minpos = pos + 0), (minat = (*minpos)->at);
		817	if (pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
		818	if (pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
		819	if (pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
		820	}
		821	else
		822	{
		823	/* slow path */
		824	if (pos >= E)
		825	break;
		826	(minpos = pos + 0), (minat = (*minpos)->at);
		827	if (pos + 1 < E && pos [1]->at < minat) (minpos = pos + 1), (minat = (*minpos)->at);
		828	if (pos + 2 < E && pos [2]->at < minat) (minpos = pos + 2), (minat = (*minpos)->at);
		829	if (pos + 3 < E && pos [3]->at < minat) (minpos = pos + 3), (minat = (*minpos)->at);
		830	}
666		831
667	if (w->at <= heap [j]->at)	832	if (w->at <= minat)
668	break;	833	break;
669		834
670	heap [k] = heap [j];	835	ev_active (*minpos) = k;
671	((W)heap [k])->active = k + 1;	836	heap [k] = *minpos;
672	k = j;	837
		838	k = minpos - heap;
673	}	839	}
674		840
675	heap [k] = w;	841	heap [k] = w;
		842	ev_active (heap [k]) = k;
		843	}
		844
		845	#else // 4HEAP
		846
		847	#define HEAP0 1
		848
		849	/* towards the root */
		850	void inline_speed
		851	upheap (WT *heap, int k)
		852	{
		853	WT w = heap [k];
		854
		855	for (;;)
		856	{
		857	int p = k >> 1;
		858
		859	/* maybe we could use a dummy element at heap [0]? */
		860	if (!p \|\| heap [p]->at <= w->at)
		861	break;
		862
		863	heap [k] = heap [p];
		864	ev_active (heap [k]) = k;
		865	k = p;
		866	}
		867
		868	heap [k] = w;
		869	ev_active (heap [k]) = k;
		870	}
		871
		872	/* away from the root */
		873	void inline_speed
		874	downheap (WT *heap, int N, int k)
		875	{
		876	WT w = heap [k];
		877
		878	for (;;)
		879	{
		880	int c = k << 1;
		881
		882	if (c > N)
		883	break;
		884
		885	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		886	? 1 : 0;
		887
		888	if (w->at <= heap [c]->at)
		889	break;
		890
		891	heap [k] = heap [c];
676	((W)heap [k])->active = k + 1;	892	((W)heap [k])->active = k;
		893
		894	k = c;
		895	}
		896
		897	heap [k] = w;
		898	ev_active (heap [k]) = k;
677	}	899	}
		900	#endif
678		901
679	void inline_size	902	void inline_size
680	adjustheap (WT *heap, int N, int k)	903	adjustheap (WT *heap, int N, int k)
681	{	904	{
682	upheap (heap, k);	905	upheap (heap, k);
…		…
686	/*****************************************************************************/	909	/*****************************************************************************/
687		910
688	typedef struct	911	typedef struct
689	{	912	{
690	WL head;	913	WL head;
691	sig_atomic_t volatile gotsig;	914	EV_ATOMIC_T gotsig;
692	} ANSIG;	915	} ANSIG;
693		916
694	static ANSIG *signals;	917	static ANSIG *signals;
695	static int signalmax;	918	static int signalmax;
696		919
697	static int sigpipe [2];	920	static EV_ATOMIC_T gotsig;
698	static sig_atomic_t volatile gotsig;
699	static ev_io sigev;
700		921
701	void inline_size	922	void inline_size
702	signals_init (ANSIG *base, int count)	923	signals_init (ANSIG *base, int count)
703	{	924	{
704	while (count--)	925	while (count--)
…		…
708		929
709	++base;	930	++base;
710	}	931	}
711	}	932	}
712		933
713	static void	934	/*****************************************************************************/
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		935
764	void inline_speed	936	void inline_speed
765	fd_intern (int fd)	937	fd_intern (int fd)
766	{	938	{
767	#ifdef _WIN32	939	#ifdef _WIN32
…		…
772	fcntl (fd, F_SETFL, O_NONBLOCK);	944	fcntl (fd, F_SETFL, O_NONBLOCK);
773	#endif	945	#endif
774	}	946	}
775		947
776	static void noinline	948	static void noinline
777	siginit (EV_P)	949	evpipe_init (EV_P)
778	{	950	{
		951	if (!ev_is_active (&pipeev))
		952	{
		953	#if EV_USE_EVENTFD
		954	if ((evfd = eventfd (0, 0)) >= 0)
		955	{
		956	evpipe [0] = -1;
		957	fd_intern (evfd);
		958	ev_io_set (&pipeev, evfd, EV_READ);
		959	}
		960	else
		961	#endif
		962	{
		963	while (pipe (evpipe))
		964	syserr ("(libev) error creating signal/async pipe");
		965
779	fd_intern (sigpipe [0]);	966	fd_intern (evpipe [0]);
780	fd_intern (sigpipe [1]);	967	fd_intern (evpipe [1]);
		968	ev_io_set (&pipeev, evpipe [0], EV_READ);
		969	}
781		970
782	ev_io_set (&sigev, sigpipe [0], EV_READ);
783	ev_io_start (EV_A_ &sigev);	971	ev_io_start (EV_A_ &pipeev);
784	ev_unref (EV_A); /* child watcher should not keep loop alive */	972	ev_unref (EV_A); /* watcher should not keep loop alive */
		973	}
		974	}
		975
		976	void inline_size
		977	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		978	{
		979	if (!*flag)
		980	{
		981	int old_errno = errno; /* save errno because write might clobber it */
		982
		983	*flag = 1;
		984
		985	#if EV_USE_EVENTFD
		986	if (evfd >= 0)
		987	{
		988	uint64_t counter = 1;
		989	write (evfd, &counter, sizeof (uint64_t));
		990	}
		991	else
		992	#endif
		993	write (evpipe [1], &old_errno, 1);
		994
		995	errno = old_errno;
		996	}
		997	}
		998
		999	static void
		1000	pipecb (EV_P_ ev_io *iow, int revents)
		1001	{
		1002	#if EV_USE_EVENTFD
		1003	if (evfd >= 0)
		1004	{
		1005	uint64_t counter;
		1006	read (evfd, &counter, sizeof (uint64_t));
		1007	}
		1008	else
		1009	#endif
		1010	{
		1011	char dummy;
		1012	read (evpipe [0], &dummy, 1);
		1013	}
		1014
		1015	if (gotsig && ev_is_default_loop (EV_A))
		1016	{
		1017	int signum;
		1018	gotsig = 0;
		1019
		1020	for (signum = signalmax; signum--; )
		1021	if (signals [signum].gotsig)
		1022	ev_feed_signal_event (EV_A_ signum + 1);
		1023	}
		1024
		1025	#if EV_ASYNC_ENABLE
		1026	if (gotasync)
		1027	{
		1028	int i;
		1029	gotasync = 0;
		1030
		1031	for (i = asynccnt; i--; )
		1032	if (asyncs [i]->sent)
		1033	{
		1034	asyncs [i]->sent = 0;
		1035	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1036	}
		1037	}
		1038	#endif
785	}	1039	}
786		1040
787	/*****************************************************************************/	1041	/*****************************************************************************/
788		1042
		1043	static void
		1044	ev_sighandler (int signum)
		1045	{
		1046	#if EV_MULTIPLICITY
		1047	struct ev_loop *loop = &default_loop_struct;
		1048	#endif
		1049
		1050	#if _WIN32
		1051	signal (signum, ev_sighandler);
		1052	#endif
		1053
		1054	signals [signum - 1].gotsig = 1;
		1055	evpipe_write (EV_A_ &gotsig);
		1056	}
		1057
		1058	void noinline
		1059	ev_feed_signal_event (EV_P_ int signum)
		1060	{
		1061	WL w;
		1062
		1063	#if EV_MULTIPLICITY
		1064	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1065	#endif
		1066
		1067	--signum;
		1068
		1069	if (signum < 0 \|\| signum >= signalmax)
		1070	return;
		1071
		1072	signals [signum].gotsig = 0;
		1073
		1074	for (w = signals [signum].head; w; w = w->next)
		1075	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1076	}
		1077
		1078	/*****************************************************************************/
		1079
789	static ev_child *childs [EV_PID_HASHSIZE];	1080	static WL childs [EV_PID_HASHSIZE];
790		1081
791	#ifndef _WIN32	1082	#ifndef _WIN32
792		1083
793	static ev_signal childev;	1084	static ev_signal childev;
794		1085
		1086	#ifndef WIFCONTINUED
		1087	# define WIFCONTINUED(status) 0
		1088	#endif
		1089
795	void inline_speed	1090	void inline_speed
796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1091	child_reap (EV_P_ int chain, int pid, int status)
797	{	1092	{
798	ev_child *w;	1093	ev_child *w;
		1094	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
799		1095
800	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1096	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1097	{
801	if (w->pid == pid \|\| !w->pid)	1098	if ((w->pid == pid \|\| !w->pid)
		1099	&& (!traced \|\| (w->flags & 1)))
802	{	1100	{
803	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	1101	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;	1102	w->rpid = pid;
805	w->rstatus = status;	1103	w->rstatus = status;
806	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1104	ev_feed_event (EV_A_ (W)w, EV_CHILD);
807	}	1105	}
		1106	}
808	}	1107	}
809		1108
810	#ifndef WCONTINUED	1109	#ifndef WCONTINUED
811	# define WCONTINUED 0	1110	# define WCONTINUED 0
812	#endif	1111	#endif
…		…
821	if (!WCONTINUED	1120	if (!WCONTINUED
822	\|\| errno != EINVAL	1121	\|\| errno != EINVAL
823	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1122	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
824	return;	1123	return;
825		1124
826	/* make sure we are called again until all childs have been reaped */	1125	/* 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 */	1126	/* 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);	1127	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
829		1128
830	child_reap (EV_A_ sw, pid, pid, status);	1129	child_reap (EV_A_ pid, pid, status);
831	if (EV_PID_HASHSIZE > 1)	1130	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 */	1131	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
833	}	1132	}
834		1133
835	#endif	1134	#endif
836		1135
837	/*****************************************************************************/	1136	/*****************************************************************************/
…		…
909	}	1208	}
910		1209
911	unsigned int	1210	unsigned int
912	ev_embeddable_backends (void)	1211	ev_embeddable_backends (void)
913	{	1212	{
914	return EVBACKEND_EPOLL	1213	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
915	\| EVBACKEND_KQUEUE	1214
916	\| EVBACKEND_PORT;	1215	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1216	/* please fix it and tell me how to detect the fix */
		1217	flags &= ~EVBACKEND_EPOLL;
		1218
		1219	return flags;
917	}	1220	}
918		1221
919	unsigned int	1222	unsigned int
920	ev_backend (EV_P)	1223	ev_backend (EV_P)
921	{	1224	{
…		…
924		1227
925	unsigned int	1228	unsigned int
926	ev_loop_count (EV_P)	1229	ev_loop_count (EV_P)
927	{	1230	{
928	return loop_count;	1231	return loop_count;
		1232	}
		1233
		1234	void
		1235	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1236	{
		1237	io_blocktime = interval;
		1238	}
		1239
		1240	void
		1241	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1242	{
		1243	timeout_blocktime = interval;
929	}	1244	}
930		1245
931	static void noinline	1246	static void noinline
932	loop_init (EV_P_ unsigned int flags)	1247	loop_init (EV_P_ unsigned int flags)
933	{	1248	{
…		…
939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1254	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
940	have_monotonic = 1;	1255	have_monotonic = 1;
941	}	1256	}
942	#endif	1257	#endif
943		1258
944	ev_rt_now = ev_time ();	1259	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1260	mn_now = get_clock ();
946	now_floor = mn_now;	1261	now_floor = mn_now;
947	rtmn_diff = ev_rt_now - mn_now;	1262	rtmn_diff = ev_rt_now - mn_now;
		1263
		1264	io_blocktime = 0.;
		1265	timeout_blocktime = 0.;
		1266	backend = 0;
		1267	backend_fd = -1;
		1268	gotasync = 0;
		1269	#if EV_USE_INOTIFY
		1270	fs_fd = -2;
		1271	#endif
948		1272
949	/* pid check not overridable via env */	1273	/* pid check not overridable via env */
950	#ifndef _WIN32	1274	#ifndef _WIN32
951	if (flags & EVFLAG_FORKCHECK)	1275	if (flags & EVFLAG_FORKCHECK)
952	curpid = getpid ();	1276	curpid = getpid ();
…		…
955	if (!(flags & EVFLAG_NOENV)	1279	if (!(flags & EVFLAG_NOENV)
956	&& !enable_secure ()	1280	&& !enable_secure ()
957	&& getenv ("LIBEV_FLAGS"))	1281	&& getenv ("LIBEV_FLAGS"))
958	flags = atoi (getenv ("LIBEV_FLAGS"));	1282	flags = atoi (getenv ("LIBEV_FLAGS"));
959		1283
960	if (!(flags & 0x0000ffffUL))	1284	if (!(flags & 0x0000ffffU))
961	flags \|= ev_recommended_backends ();	1285	flags \|= ev_recommended_backends ();
962
963	backend = 0;
964	backend_fd = -1;
965	#if EV_USE_INOTIFY
966	fs_fd = -2;
967	#endif
968		1286
969	#if EV_USE_PORT	1287	#if EV_USE_PORT
970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1288	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
971	#endif	1289	#endif
972	#if EV_USE_KQUEUE	1290	#if EV_USE_KQUEUE
…		…
980	#endif	1298	#endif
981	#if EV_USE_SELECT	1299	#if EV_USE_SELECT
982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1300	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
983	#endif	1301	#endif
984		1302
985	ev_init (&sigev, sigcb);	1303	ev_init (&pipeev, pipecb);
986	ev_set_priority (&sigev, EV_MAXPRI);	1304	ev_set_priority (&pipeev, EV_MAXPRI);
987	}	1305	}
988	}	1306	}
989		1307
990	static void noinline	1308	static void noinline
991	loop_destroy (EV_P)	1309	loop_destroy (EV_P)
992	{	1310	{
993	int i;	1311	int i;
		1312
		1313	if (ev_is_active (&pipeev))
		1314	{
		1315	ev_ref (EV_A); /* signal watcher */
		1316	ev_io_stop (EV_A_ &pipeev);
		1317
		1318	#if EV_USE_EVENTFD
		1319	if (evfd >= 0)
		1320	close (evfd);
		1321	#endif
		1322
		1323	if (evpipe [0] >= 0)
		1324	{
		1325	close (evpipe [0]);
		1326	close (evpipe [1]);
		1327	}
		1328	}
994		1329
995	#if EV_USE_INOTIFY	1330	#if EV_USE_INOTIFY
996	if (fs_fd >= 0)	1331	if (fs_fd >= 0)
997	close (fs_fd);	1332	close (fs_fd);
998	#endif	1333	#endif
…		…
1021	array_free (pending, [i]);	1356	array_free (pending, [i]);
1022	#if EV_IDLE_ENABLE	1357	#if EV_IDLE_ENABLE
1023	array_free (idle, [i]);	1358	array_free (idle, [i]);
1024	#endif	1359	#endif
1025	}	1360	}
		1361
		1362	ev_free (anfds); anfdmax = 0;
1026		1363
1027	/* have to use the microsoft-never-gets-it-right macro */	1364	/* have to use the microsoft-never-gets-it-right macro */
1028	array_free (fdchange, EMPTY);	1365	array_free (fdchange, EMPTY);
1029	array_free (timer, EMPTY);	1366	array_free (timer, EMPTY);
1030	#if EV_PERIODIC_ENABLE	1367	#if EV_PERIODIC_ENABLE
1031	array_free (periodic, EMPTY);	1368	array_free (periodic, EMPTY);
1032	#endif	1369	#endif
		1370	#if EV_FORK_ENABLE
		1371	array_free (fork, EMPTY);
		1372	#endif
1033	array_free (prepare, EMPTY);	1373	array_free (prepare, EMPTY);
1034	array_free (check, EMPTY);	1374	array_free (check, EMPTY);
		1375	#if EV_ASYNC_ENABLE
		1376	array_free (async, EMPTY);
		1377	#endif
1035		1378
1036	backend = 0;	1379	backend = 0;
1037	}	1380	}
1038		1381
		1382	#if EV_USE_INOTIFY
1039	void inline_size infy_fork (EV_P);	1383	void inline_size infy_fork (EV_P);
		1384	#endif
1040		1385
1041	void inline_size	1386	void inline_size
1042	loop_fork (EV_P)	1387	loop_fork (EV_P)
1043	{	1388	{
1044	#if EV_USE_PORT	1389	#if EV_USE_PORT
…		…
1052	#endif	1397	#endif
1053	#if EV_USE_INOTIFY	1398	#if EV_USE_INOTIFY
1054	infy_fork (EV_A);	1399	infy_fork (EV_A);
1055	#endif	1400	#endif
1056		1401
1057	if (ev_is_active (&sigev))	1402	if (ev_is_active (&pipeev))
1058	{	1403	{
1059	/* default loop */	1404	/* this "locks" the handlers against writing to the pipe */
		1405	/* while we modify the fd vars */
		1406	gotsig = 1;
		1407	#if EV_ASYNC_ENABLE
		1408	gotasync = 1;
		1409	#endif
1060		1410
1061	ev_ref (EV_A);	1411	ev_ref (EV_A);
1062	ev_io_stop (EV_A_ &sigev);	1412	ev_io_stop (EV_A_ &pipeev);
		1413
		1414	#if EV_USE_EVENTFD
		1415	if (evfd >= 0)
		1416	close (evfd);
		1417	#endif
		1418
		1419	if (evpipe [0] >= 0)
		1420	{
1063	close (sigpipe [0]);	1421	close (evpipe [0]);
1064	close (sigpipe [1]);	1422	close (evpipe [1]);
		1423	}
1065		1424
1066	while (pipe (sigpipe))
1067	syserr ("(libev) error creating pipe");
1068
1069	siginit (EV_A);	1425	evpipe_init (EV_A);
		1426	/* now iterate over everything, in case we missed something */
		1427	pipecb (EV_A_ &pipeev, EV_READ);
1070	}	1428	}
1071		1429
1072	postfork = 0;	1430	postfork = 0;
1073	}	1431	}
1074		1432
…		…
1096	}	1454	}
1097		1455
1098	void	1456	void
1099	ev_loop_fork (EV_P)	1457	ev_loop_fork (EV_P)
1100	{	1458	{
1101	postfork = 1;	1459	postfork = 1; /* must be in line with ev_default_fork */
1102	}	1460	}
1103
1104	#endif	1461	#endif
1105		1462
1106	#if EV_MULTIPLICITY	1463	#if EV_MULTIPLICITY
1107	struct ev_loop *	1464	struct ev_loop *
1108	ev_default_loop_init (unsigned int flags)	1465	ev_default_loop_init (unsigned int flags)
1109	#else	1466	#else
1110	int	1467	int
1111	ev_default_loop (unsigned int flags)	1468	ev_default_loop (unsigned int flags)
1112	#endif	1469	#endif
1113	{	1470	{
1114	if (sigpipe [0] == sigpipe [1])
1115	if (pipe (sigpipe))
1116	return 0;
1117
1118	if (!ev_default_loop_ptr)	1471	if (!ev_default_loop_ptr)
1119	{	1472	{
1120	#if EV_MULTIPLICITY	1473	#if EV_MULTIPLICITY
1121	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1474	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1122	#else	1475	#else
…		…
1125		1478
1126	loop_init (EV_A_ flags);	1479	loop_init (EV_A_ flags);
1127		1480
1128	if (ev_backend (EV_A))	1481	if (ev_backend (EV_A))
1129	{	1482	{
1130	siginit (EV_A);
1131
1132	#ifndef _WIN32	1483	#ifndef _WIN32
1133	ev_signal_init (&childev, childcb, SIGCHLD);	1484	ev_signal_init (&childev, childcb, SIGCHLD);
1134	ev_set_priority (&childev, EV_MAXPRI);	1485	ev_set_priority (&childev, EV_MAXPRI);
1135	ev_signal_start (EV_A_ &childev);	1486	ev_signal_start (EV_A_ &childev);
1136	ev_unref (EV_A); /* child watcher should not keep loop alive */	1487	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1153	#ifndef _WIN32	1504	#ifndef _WIN32
1154	ev_ref (EV_A); /* child watcher */	1505	ev_ref (EV_A); /* child watcher */
1155	ev_signal_stop (EV_A_ &childev);	1506	ev_signal_stop (EV_A_ &childev);
1156	#endif	1507	#endif
1157		1508
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);	1509	loop_destroy (EV_A);
1165	}	1510	}
1166		1511
1167	void	1512	void
1168	ev_default_fork (void)	1513	ev_default_fork (void)
…		…
1170	#if EV_MULTIPLICITY	1515	#if EV_MULTIPLICITY
1171	struct ev_loop *loop = ev_default_loop_ptr;	1516	struct ev_loop *loop = ev_default_loop_ptr;
1172	#endif	1517	#endif
1173		1518
1174	if (backend)	1519	if (backend)
1175	postfork = 1;	1520	postfork = 1; /* must be in line with ev_loop_fork */
1176	}	1521	}
1177		1522
1178	/*****************************************************************************/	1523	/*****************************************************************************/
1179		1524
1180	void	1525	void
…		…
1200	p->w->pending = 0;	1545	p->w->pending = 0;
1201	EV_CB_INVOKE (p->w, p->events);	1546	EV_CB_INVOKE (p->w, p->events);
1202	}	1547	}
1203	}	1548	}
1204	}	1549	}
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		1550
1286	#if EV_IDLE_ENABLE	1551	#if EV_IDLE_ENABLE
1287	void inline_size	1552	void inline_size
1288	idle_reify (EV_P)	1553	idle_reify (EV_P)
1289	{	1554	{
…		…
1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1566	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1302	break;	1567	break;
1303	}	1568	}
1304	}	1569	}
1305	}	1570	}
		1571	}
		1572	#endif
		1573
		1574	void inline_size
		1575	timers_reify (EV_P)
		1576	{
		1577	while (timercnt && ev_at (timers [HEAP0]) <= mn_now)
		1578	{
		1579	ev_timer w = (ev_timer )timers [HEAP0];
		1580
		1581	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
		1582
		1583	/* first reschedule or stop timer */
		1584	if (w->repeat)
		1585	{
		1586	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1587
		1588	ev_at (w) += w->repeat;
		1589	if (ev_at (w) < mn_now)
		1590	ev_at (w) = mn_now;
		1591
		1592	downheap (timers, timercnt, HEAP0);
		1593	}
		1594	else
		1595	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1596
		1597	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1598	}
		1599	}
		1600
		1601	#if EV_PERIODIC_ENABLE
		1602	void inline_size
		1603	periodics_reify (EV_P)
		1604	{
		1605	while (periodiccnt && ev_at (periodics [HEAP0]) <= ev_rt_now)
		1606	{
		1607	ev_periodic w = (ev_periodic )periodics [HEAP0];
		1608
		1609	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
		1610
		1611	/* first reschedule or stop timer */
		1612	if (w->reschedule_cb)
		1613	{
		1614	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1615	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1616	downheap (periodics, periodiccnt, 1);
		1617	}
		1618	else if (w->interval)
		1619	{
		1620	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1621	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1622	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1623	downheap (periodics, periodiccnt, HEAP0);
		1624	}
		1625	else
		1626	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1627
		1628	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1629	}
		1630	}
		1631
		1632	static void noinline
		1633	periodics_reschedule (EV_P)
		1634	{
		1635	int i;
		1636
		1637	/* adjust periodics after time jump */
		1638	for (i = 1; i <= periodiccnt; ++i)
		1639	{
		1640	ev_periodic w = (ev_periodic )periodics [i];
		1641
		1642	if (w->reschedule_cb)
		1643	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1644	else if (w->interval)
		1645	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1646	}
		1647
		1648	/* now rebuild the heap */
		1649	for (i = periodiccnt >> 1; --i; )
		1650	downheap (periodics, periodiccnt, i + HEAP0);
1306	}	1651	}
1307	#endif	1652	#endif
1308		1653
1309	void inline_speed	1654	void inline_speed
1310	time_update (EV_P_ ev_tstamp max_block)	1655	time_update (EV_P_ ev_tstamp max_block)
…		…
1339	*/	1684	*/
1340	for (i = 4; --i; )	1685	for (i = 4; --i; )
1341	{	1686	{
1342	rtmn_diff = ev_rt_now - mn_now;	1687	rtmn_diff = ev_rt_now - mn_now;
1343		1688
1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1689	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1345	return; /* all is well */	1690	return; /* all is well */
1346		1691
1347	ev_rt_now = ev_time ();	1692	ev_rt_now = ev_time ();
1348	mn_now = get_clock ();	1693	mn_now = get_clock ();
1349	now_floor = mn_now;	1694	now_floor = mn_now;
…		…
1364	{	1709	{
1365	#if EV_PERIODIC_ENABLE	1710	#if EV_PERIODIC_ENABLE
1366	periodics_reschedule (EV_A);	1711	periodics_reschedule (EV_A);
1367	#endif	1712	#endif
1368	/* adjust timers. this is easy, as the offset is the same for all of them */	1713	/* adjust timers. this is easy, as the offset is the same for all of them */
1369	for (i = 0; i < timercnt; ++i)	1714	for (i = 1; i <= timercnt; ++i)
1370	((WT)timers [i])->at += ev_rt_now - mn_now;	1715	ev_at (timers [i]) += ev_rt_now - mn_now;
1371	}	1716	}
1372		1717
1373	mn_now = ev_rt_now;	1718	mn_now = ev_rt_now;
1374	}	1719	}
1375	}	1720	}
…		…
1389	static int loop_done;	1734	static int loop_done;
1390		1735
1391	void	1736	void
1392	ev_loop (EV_P_ int flags)	1737	ev_loop (EV_P_ int flags)
1393	{	1738	{
1394	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1739	loop_done = EVUNLOOP_CANCEL;
1395	? EVUNLOOP_ONE
1396	: EVUNLOOP_CANCEL;
1397		1740
1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1741	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1399		1742
1400	do	1743	do
1401	{	1744	{
…		…
1435	/* update fd-related kernel structures */	1778	/* update fd-related kernel structures */
1436	fd_reify (EV_A);	1779	fd_reify (EV_A);
1437		1780
1438	/* calculate blocking time */	1781	/* calculate blocking time */
1439	{	1782	{
1440	ev_tstamp block;	1783	ev_tstamp waittime = 0.;
		1784	ev_tstamp sleeptime = 0.;
1441		1785
1442	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1786	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1443	block = 0.; /* do not block at all */
1444	else
1445	{	1787	{
1446	/* update time to cancel out callback processing overhead */	1788	/* update time to cancel out callback processing overhead */
1447	time_update (EV_A_ 1e100);	1789	time_update (EV_A_ 1e100);
1448		1790
1449	block = MAX_BLOCKTIME;	1791	waittime = MAX_BLOCKTIME;
1450		1792
1451	if (timercnt)	1793	if (timercnt)
1452	{	1794	{
1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1795	ev_tstamp to = ev_at (timers [HEAP0]) - mn_now + backend_fudge;
1454	if (block > to) block = to;	1796	if (waittime > to) waittime = to;
1455	}	1797	}
1456		1798
1457	#if EV_PERIODIC_ENABLE	1799	#if EV_PERIODIC_ENABLE
1458	if (periodiccnt)	1800	if (periodiccnt)
1459	{	1801	{
1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1802	ev_tstamp to = ev_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1461	if (block > to) block = to;	1803	if (waittime > to) waittime = to;
1462	}	1804	}
1463	#endif	1805	#endif
1464		1806
1465	if (expect_false (block < 0.)) block = 0.;	1807	if (expect_false (waittime < timeout_blocktime))
		1808	waittime = timeout_blocktime;
		1809
		1810	sleeptime = waittime - backend_fudge;
		1811
		1812	if (expect_true (sleeptime > io_blocktime))
		1813	sleeptime = io_blocktime;
		1814
		1815	if (sleeptime)
		1816	{
		1817	ev_sleep (sleeptime);
		1818	waittime -= sleeptime;
		1819	}
1466	}	1820	}
1467		1821
1468	++loop_count;	1822	++loop_count;
1469	backend_poll (EV_A_ block);	1823	backend_poll (EV_A_ waittime);
1470		1824
1471	/* update ev_rt_now, do magic */	1825	/* update ev_rt_now, do magic */
1472	time_update (EV_A_ block);	1826	time_update (EV_A_ waittime + sleeptime);
1473	}	1827	}
1474		1828
1475	/* queue pending timers and reschedule them */	1829	/* queue pending timers and reschedule them */
1476	timers_reify (EV_A); /* relative timers called last */	1830	timers_reify (EV_A); /* relative timers called last */
1477	#if EV_PERIODIC_ENABLE	1831	#if EV_PERIODIC_ENABLE
…		…
1486	/* queue check watchers, to be executed first */	1840	/* queue check watchers, to be executed first */
1487	if (expect_false (checkcnt))	1841	if (expect_false (checkcnt))
1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1842	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1489		1843
1490	call_pending (EV_A);	1844	call_pending (EV_A);
1491
1492	}	1845	}
1493	while (expect_true (activecnt && !loop_done));	1846	while (expect_true (
		1847	activecnt
		1848	&& !loop_done
		1849	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1850	));
1494		1851
1495	if (loop_done == EVUNLOOP_ONE)	1852	if (loop_done == EVUNLOOP_ONE)
1496	loop_done = EVUNLOOP_CANCEL;	1853	loop_done = EVUNLOOP_CANCEL;
1497	}	1854	}
1498		1855
…		…
1589		1946
1590	assert (("ev_io_start called with negative fd", fd >= 0));	1947	assert (("ev_io_start called with negative fd", fd >= 0));
1591		1948
1592	ev_start (EV_A_ (W)w, 1);	1949	ev_start (EV_A_ (W)w, 1);
1593	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1950	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1951	wlist_add (&anfds[fd].head, (WL)w);
1595		1952
1596	fd_change (EV_A_ fd);	1953	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1954	w->events &= ~EV_IOFDSET;
1597	}	1955	}
1598		1956
1599	void noinline	1957	void noinline
1600	ev_io_stop (EV_P_ ev_io *w)	1958	ev_io_stop (EV_P_ ev_io *w)
1601	{	1959	{
…		…
1603	if (expect_false (!ev_is_active (w)))	1961	if (expect_false (!ev_is_active (w)))
1604	return;	1962	return;
1605		1963
1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1964	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1607		1965
1608	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1966	wlist_del (&anfds[w->fd].head, (WL)w);
1609	ev_stop (EV_A_ (W)w);	1967	ev_stop (EV_A_ (W)w);
1610		1968
1611	fd_change (EV_A_ w->fd);	1969	fd_change (EV_A_ w->fd, 1);
1612	}	1970	}
1613		1971
1614	void noinline	1972	void noinline
1615	ev_timer_start (EV_P_ ev_timer *w)	1973	ev_timer_start (EV_P_ ev_timer *w)
1616	{	1974	{
1617	if (expect_false (ev_is_active (w)))	1975	if (expect_false (ev_is_active (w)))
1618	return;	1976	return;
1619		1977
1620	((WT)w)->at += mn_now;	1978	ev_at (w) += mn_now;
1621		1979
1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1980	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1623		1981
1624	ev_start (EV_A_ (W)w, ++timercnt);	1982	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1983	array_needsize (WT, timers, timermax, timercnt + HEAP0, EMPTY2);
1626	timers [timercnt - 1] = w;	1984	timers [ev_active (w)] = (WT)w;
1627	upheap ((WT *)timers, timercnt - 1);	1985	upheap (timers, ev_active (w));
1628		1986
1629	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1987	/assert (("internal timer heap corruption", timers [ev_active (w)] == w));/
1630	}	1988	}
1631		1989
1632	void noinline	1990	void noinline
1633	ev_timer_stop (EV_P_ ev_timer *w)	1991	ev_timer_stop (EV_P_ ev_timer *w)
1634	{	1992	{
1635	clear_pending (EV_A_ (W)w);	1993	clear_pending (EV_A_ (W)w);
1636	if (expect_false (!ev_is_active (w)))	1994	if (expect_false (!ev_is_active (w)))
1637	return;	1995	return;
1638		1996
1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1640
1641	{	1997	{
1642	int active = ((W)w)->active;	1998	int active = ev_active (w);
1643		1999
		2000	assert (("internal timer heap corruption", timers [active] == (WT)w));
		2001
1644	if (expect_true (--active < --timercnt))	2002	if (expect_true (active < timercnt + HEAP0 - 1))
1645	{	2003	{
1646	timers [active] = timers [timercnt];	2004	timers [active] = timers [timercnt + HEAP0 - 1];
1647	adjustheap ((WT *)timers, timercnt, active);	2005	adjustheap (timers, timercnt, active);
1648	}	2006	}
		2007
		2008	--timercnt;
1649	}	2009	}
1650		2010
1651	((WT)w)->at -= mn_now;	2011	ev_at (w) -= mn_now;
1652		2012
1653	ev_stop (EV_A_ (W)w);	2013	ev_stop (EV_A_ (W)w);
1654	}	2014	}
1655		2015
1656	void noinline	2016	void noinline
…		…
1658	{	2018	{
1659	if (ev_is_active (w))	2019	if (ev_is_active (w))
1660	{	2020	{
1661	if (w->repeat)	2021	if (w->repeat)
1662	{	2022	{
1663	((WT)w)->at = mn_now + w->repeat;	2023	ev_at (w) = mn_now + w->repeat;
1664	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2024	adjustheap (timers, timercnt, ev_active (w));
1665	}	2025	}
1666	else	2026	else
1667	ev_timer_stop (EV_A_ w);	2027	ev_timer_stop (EV_A_ w);
1668	}	2028	}
1669	else if (w->repeat)	2029	else if (w->repeat)
1670	{	2030	{
1671	w->at = w->repeat;	2031	ev_at (w) = w->repeat;
1672	ev_timer_start (EV_A_ w);	2032	ev_timer_start (EV_A_ w);
1673	}	2033	}
1674	}	2034	}
1675		2035
1676	#if EV_PERIODIC_ENABLE	2036	#if EV_PERIODIC_ENABLE
…		…
1679	{	2039	{
1680	if (expect_false (ev_is_active (w)))	2040	if (expect_false (ev_is_active (w)))
1681	return;	2041	return;
1682		2042
1683	if (w->reschedule_cb)	2043	if (w->reschedule_cb)
1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2044	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1685	else if (w->interval)	2045	else if (w->interval)
1686	{	2046	{
1687	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2047	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1688	/* this formula differs from the one in periodic_reify because we do not always round up */	2048	/* this formula differs from the one in periodic_reify because we do not always round up */
1689	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2049	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1690	}	2050	}
1691	else	2051	else
1692	((WT)w)->at = w->offset;	2052	ev_at (w) = w->offset;
1693		2053
1694	ev_start (EV_A_ (W)w, ++periodiccnt);	2054	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2055	array_needsize (WT, periodics, periodicmax, periodiccnt + HEAP0, EMPTY2);
1696	periodics [periodiccnt - 1] = w;	2056	periodics [ev_active (w)] = (WT)w;
1697	upheap ((WT *)periodics, periodiccnt - 1);	2057	upheap (periodics, ev_active (w));
1698		2058
1699	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	2059	/assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));/
1700	}	2060	}
1701		2061
1702	void noinline	2062	void noinline
1703	ev_periodic_stop (EV_P_ ev_periodic *w)	2063	ev_periodic_stop (EV_P_ ev_periodic *w)
1704	{	2064	{
1705	clear_pending (EV_A_ (W)w);	2065	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	2066	if (expect_false (!ev_is_active (w)))
1707	return;	2067	return;
1708		2068
1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1710
1711	{	2069	{
1712	int active = ((W)w)->active;	2070	int active = ev_active (w);
1713		2071
		2072	assert (("internal periodic heap corruption", periodics [active] == (WT)w));
		2073
1714	if (expect_true (--active < --periodiccnt))	2074	if (expect_true (active < periodiccnt + HEAP0 - 1))
1715	{	2075	{
1716	periodics [active] = periodics [periodiccnt];	2076	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1717	adjustheap ((WT *)periodics, periodiccnt, active);	2077	adjustheap (periodics, periodiccnt, active);
1718	}	2078	}
		2079
		2080	--periodiccnt;
1719	}	2081	}
1720		2082
1721	ev_stop (EV_A_ (W)w);	2083	ev_stop (EV_A_ (W)w);
1722	}	2084	}
1723		2085
…		…
1743	if (expect_false (ev_is_active (w)))	2105	if (expect_false (ev_is_active (w)))
1744	return;	2106	return;
1745		2107
1746	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2108	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1747		2109
		2110	evpipe_init (EV_A);
		2111
		2112	{
		2113	#ifndef _WIN32
		2114	sigset_t full, prev;
		2115	sigfillset (&full);
		2116	sigprocmask (SIG_SETMASK, &full, &prev);
		2117	#endif
		2118
		2119	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2120
		2121	#ifndef _WIN32
		2122	sigprocmask (SIG_SETMASK, &prev, 0);
		2123	#endif
		2124	}
		2125
1748	ev_start (EV_A_ (W)w, 1);	2126	ev_start (EV_A_ (W)w, 1);
1749	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1750	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2127	wlist_add (&signals [w->signum - 1].head, (WL)w);
1751		2128
1752	if (!((WL)w)->next)	2129	if (!((WL)w)->next)
1753	{	2130	{
1754	#if _WIN32	2131	#if _WIN32
1755	signal (w->signum, sighandler);	2132	signal (w->signum, ev_sighandler);
1756	#else	2133	#else
1757	struct sigaction sa;	2134	struct sigaction sa;
1758	sa.sa_handler = sighandler;	2135	sa.sa_handler = ev_sighandler;
1759	sigfillset (&sa.sa_mask);	2136	sigfillset (&sa.sa_mask);
1760	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2137	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1761	sigaction (w->signum, &sa, 0);	2138	sigaction (w->signum, &sa, 0);
1762	#endif	2139	#endif
1763	}	2140	}
…		…
1768	{	2145	{
1769	clear_pending (EV_A_ (W)w);	2146	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	2147	if (expect_false (!ev_is_active (w)))
1771	return;	2148	return;
1772		2149
1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2150	wlist_del (&signals [w->signum - 1].head, (WL)w);
1774	ev_stop (EV_A_ (W)w);	2151	ev_stop (EV_A_ (W)w);
1775		2152
1776	if (!signals [w->signum - 1].head)	2153	if (!signals [w->signum - 1].head)
1777	signal (w->signum, SIG_DFL);	2154	signal (w->signum, SIG_DFL);
1778	}	2155	}
…		…
1785	#endif	2162	#endif
1786	if (expect_false (ev_is_active (w)))	2163	if (expect_false (ev_is_active (w)))
1787	return;	2164	return;
1788		2165
1789	ev_start (EV_A_ (W)w, 1);	2166	ev_start (EV_A_ (W)w, 1);
1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2167	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1791	}	2168	}
1792		2169
1793	void	2170	void
1794	ev_child_stop (EV_P_ ev_child *w)	2171	ev_child_stop (EV_P_ ev_child *w)
1795	{	2172	{
1796	clear_pending (EV_A_ (W)w);	2173	clear_pending (EV_A_ (W)w);
1797	if (expect_false (!ev_is_active (w)))	2174	if (expect_false (!ev_is_active (w)))
1798	return;	2175	return;
1799		2176
1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2177	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1801	ev_stop (EV_A_ (W)w);	2178	ev_stop (EV_A_ (W)w);
1802	}	2179	}
1803		2180
1804	#if EV_STAT_ENABLE	2181	#if EV_STAT_ENABLE
1805		2182
…		…
1824	if (w->wd < 0)	2201	if (w->wd < 0)
1825	{	2202	{
1826	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2203	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1827		2204
1828	/* monitor some parent directory for speedup hints */	2205	/* monitor some parent directory for speedup hints */
		2206	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2207	/* but an efficiency issue only */
1829	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2208	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
1830	{	2209	{
1831	char path [4096];	2210	char path [4096];
1832	strcpy (path, w->path);	2211	strcpy (path, w->path);
1833		2212
…		…
2078	clear_pending (EV_A_ (W)w);	2457	clear_pending (EV_A_ (W)w);
2079	if (expect_false (!ev_is_active (w)))	2458	if (expect_false (!ev_is_active (w)))
2080	return;	2459	return;
2081		2460
2082	{	2461	{
2083	int active = ((W)w)->active;	2462	int active = ev_active (w);
2084		2463
2085	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2464	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2086	((W)idles [ABSPRI (w)][active - 1])->active = active;	2465	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2087		2466
2088	ev_stop (EV_A_ (W)w);	2467	ev_stop (EV_A_ (W)w);
2089	--idleall;	2468	--idleall;
2090	}	2469	}
2091	}	2470	}
…		…
2108	clear_pending (EV_A_ (W)w);	2487	clear_pending (EV_A_ (W)w);
2109	if (expect_false (!ev_is_active (w)))	2488	if (expect_false (!ev_is_active (w)))
2110	return;	2489	return;
2111		2490
2112	{	2491	{
2113	int active = ((W)w)->active;	2492	int active = ev_active (w);
		2493
2114	prepares [active - 1] = prepares [--preparecnt];	2494	prepares [active - 1] = prepares [--preparecnt];
2115	((W)prepares [active - 1])->active = active;	2495	ev_active (prepares [active - 1]) = active;
2116	}	2496	}
2117		2497
2118	ev_stop (EV_A_ (W)w);	2498	ev_stop (EV_A_ (W)w);
2119	}	2499	}
2120		2500
…		…
2135	clear_pending (EV_A_ (W)w);	2515	clear_pending (EV_A_ (W)w);
2136	if (expect_false (!ev_is_active (w)))	2516	if (expect_false (!ev_is_active (w)))
2137	return;	2517	return;
2138		2518
2139	{	2519	{
2140	int active = ((W)w)->active;	2520	int active = ev_active (w);
		2521
2141	checks [active - 1] = checks [--checkcnt];	2522	checks [active - 1] = checks [--checkcnt];
2142	((W)checks [active - 1])->active = active;	2523	ev_active (checks [active - 1]) = active;
2143	}	2524	}
2144		2525
2145	ev_stop (EV_A_ (W)w);	2526	ev_stop (EV_A_ (W)w);
2146	}	2527	}
2147		2528
2148	#if EV_EMBED_ENABLE	2529	#if EV_EMBED_ENABLE
2149	void noinline	2530	void noinline
2150	ev_embed_sweep (EV_P_ ev_embed *w)	2531	ev_embed_sweep (EV_P_ ev_embed *w)
2151	{	2532	{
2152	ev_loop (w->loop, EVLOOP_NONBLOCK);	2533	ev_loop (w->other, EVLOOP_NONBLOCK);
2153	}	2534	}
2154		2535
2155	static void	2536	static void
2156	embed_cb (EV_P_ ev_io *io, int revents)	2537	embed_io_cb (EV_P_ ev_io *io, int revents)
2157	{	2538	{
2158	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2539	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2159		2540
2160	if (ev_cb (w))	2541	if (ev_cb (w))
2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2542	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162	else	2543	else
2163	ev_embed_sweep (loop, w);	2544	ev_loop (w->other, EVLOOP_NONBLOCK);
2164	}	2545	}
		2546
		2547	static void
		2548	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2549	{
		2550	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2551
		2552	{
		2553	struct ev_loop *loop = w->other;
		2554
		2555	while (fdchangecnt)
		2556	{
		2557	fd_reify (EV_A);
		2558	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2559	}
		2560	}
		2561	}
		2562
		2563	#if 0
		2564	static void
		2565	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2566	{
		2567	ev_idle_stop (EV_A_ idle);
		2568	}
		2569	#endif
2165		2570
2166	void	2571	void
2167	ev_embed_start (EV_P_ ev_embed *w)	2572	ev_embed_start (EV_P_ ev_embed *w)
2168	{	2573	{
2169	if (expect_false (ev_is_active (w)))	2574	if (expect_false (ev_is_active (w)))
2170	return;	2575	return;
2171		2576
2172	{	2577	{
2173	struct ev_loop *loop = w->loop;	2578	struct ev_loop *loop = w->other;
2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2579	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2580	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2176	}	2581	}
2177		2582
2178	ev_set_priority (&w->io, ev_priority (w));	2583	ev_set_priority (&w->io, ev_priority (w));
2179	ev_io_start (EV_A_ &w->io);	2584	ev_io_start (EV_A_ &w->io);
		2585
		2586	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2587	ev_set_priority (&w->prepare, EV_MINPRI);
		2588	ev_prepare_start (EV_A_ &w->prepare);
		2589
		2590	/ev_idle_init (&w->idle, e,bed_idle_cb);/
2180		2591
2181	ev_start (EV_A_ (W)w, 1);	2592	ev_start (EV_A_ (W)w, 1);
2182	}	2593	}
2183		2594
2184	void	2595	void
…		…
2187	clear_pending (EV_A_ (W)w);	2598	clear_pending (EV_A_ (W)w);
2188	if (expect_false (!ev_is_active (w)))	2599	if (expect_false (!ev_is_active (w)))
2189	return;	2600	return;
2190		2601
2191	ev_io_stop (EV_A_ &w->io);	2602	ev_io_stop (EV_A_ &w->io);
		2603	ev_prepare_stop (EV_A_ &w->prepare);
2192		2604
2193	ev_stop (EV_A_ (W)w);	2605	ev_stop (EV_A_ (W)w);
2194	}	2606	}
2195	#endif	2607	#endif
2196		2608
…		…
2212	clear_pending (EV_A_ (W)w);	2624	clear_pending (EV_A_ (W)w);
2213	if (expect_false (!ev_is_active (w)))	2625	if (expect_false (!ev_is_active (w)))
2214	return;	2626	return;
2215		2627
2216	{	2628	{
2217	int active = ((W)w)->active;	2629	int active = ev_active (w);
		2630
2218	forks [active - 1] = forks [--forkcnt];	2631	forks [active - 1] = forks [--forkcnt];
2219	((W)forks [active - 1])->active = active;	2632	ev_active (forks [active - 1]) = active;
2220	}	2633	}
2221		2634
2222	ev_stop (EV_A_ (W)w);	2635	ev_stop (EV_A_ (W)w);
		2636	}
		2637	#endif
		2638
		2639	#if EV_ASYNC_ENABLE
		2640	void
		2641	ev_async_start (EV_P_ ev_async *w)
		2642	{
		2643	if (expect_false (ev_is_active (w)))
		2644	return;
		2645
		2646	evpipe_init (EV_A);
		2647
		2648	ev_start (EV_A_ (W)w, ++asynccnt);
		2649	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2650	asyncs [asynccnt - 1] = w;
		2651	}
		2652
		2653	void
		2654	ev_async_stop (EV_P_ ev_async *w)
		2655	{
		2656	clear_pending (EV_A_ (W)w);
		2657	if (expect_false (!ev_is_active (w)))
		2658	return;
		2659
		2660	{
		2661	int active = ev_active (w);
		2662
		2663	asyncs [active - 1] = asyncs [--asynccnt];
		2664	ev_active (asyncs [active - 1]) = active;
		2665	}
		2666
		2667	ev_stop (EV_A_ (W)w);
		2668	}
		2669
		2670	void
		2671	ev_async_send (EV_P_ ev_async *w)
		2672	{
		2673	w->sent = 1;
		2674	evpipe_write (EV_A_ &gotasync);
2223	}	2675	}
2224	#endif	2676	#endif
2225		2677
2226	/*****************************************************************************/	2678	/*****************************************************************************/
2227		2679
…		…
2285	ev_timer_set (&once->to, timeout, 0.);	2737	ev_timer_set (&once->to, timeout, 0.);
2286	ev_timer_start (EV_A_ &once->to);	2738	ev_timer_start (EV_A_ &once->to);
2287	}	2739	}
2288	}	2740	}
2289		2741
		2742	#if EV_MULTIPLICITY
		2743	#include "ev_wrap.h"
		2744	#endif
		2745
2290	#ifdef __cplusplus	2746	#ifdef __cplusplus
2291	}	2747	}
2292	#endif	2748	#endif
2293		2749

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Comparing libev/ev.c (file contents): Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs. Revision 1.238 by root, Thu May 8 20:49:12 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.238 by root, Thu May 8 20:49:12 2008 UTC