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

Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.210 by root, Sat Feb 9 00:34:11 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
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
146		162
147	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
149	#endif	165	#endif
150		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
151	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
153	#endif	173	#endif
154		174
155	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
202	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
205	#endif	225	#endif
206		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
207	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	243	# include <winsock.h>
209	#endif	244	#endif
210		245
211	#if !EV_STAT_ENABLE
212	# define EV_USE_INOTIFY 0
213	#endif
214
215	#if EV_USE_INOTIFY
216	# include <sys/inotify.h>
217	#endif
218
219	/**/	246	/**/
		247
		248	/*
		249	* This is used to avoid floating point rounding problems.
		250	* It is added to ev_rt_now when scheduling periodics
		251	* to ensure progress, time-wise, even when rounding
		252	* errors are against us.
		253	* This value is good at least till the year 4000.
		254	* Better solutions welcome.
		255	*/
		256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		257
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */	260	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
224		261
225	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	264	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	265	#else
236	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
240	#endif	271	#endif
241		272
242	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	274	#define expect_true(expr) expect ((expr) != 0, 1)
		275	#define inline_size static inline
		276
		277	#if EV_MINIMAL
		278	# define inline_speed static noinline
		279	#else
		280	# define inline_speed static inline
		281	#endif
244		282
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		285
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	287	#define EMPTY2(a,b) /* used to suppress some warnings */
250		288
251	typedef ev_watcher *W;	289	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
254		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
256		298
257	#ifdef _WIN32	299	#ifdef _WIN32
258	# include "ev_win32.c"	300	# include "ev_win32.c"
259	#endif	301	#endif
260		302
…		…
396	{	438	{
397	return ev_rt_now;	439	return ev_rt_now;
398	}	440	}
399	#endif	441	#endif
400		442
		443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
401	int inline_size	470	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	471	array_nextsize (int elem, int cur, int cnt)
403	{	472	{
404	int ncur = cur + 1;	473	int ncur = cur + 1;
405		474
…		…
417	}	486	}
418		487
419	return ncur;	488	return ncur;
420	}	489	}
421		490
422	inline_speed void *	491	static noinline void *
423	array_realloc (int elem, void base, int cur, int cnt)	492	array_realloc (int elem, void base, int cur, int cnt)
424	{	493	{
425	cur = array_nextsize (elem, cur, cnt);	494	cur = array_nextsize (elem, cur, cnt);
426	return ev_realloc (base, elem * *cur);	495	return ev_realloc (base, elem * *cur);
427	}	496	}
…		…
452		521
453	void noinline	522	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	523	ev_feed_event (EV_P_ void *w, int revents)
455	{	524	{
456	W w_ = (W)w;	525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
457		527
458	if (expect_false (w_->pending))	528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events \|= revents;
		530	else
459	{	531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	535	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	536	}
463
464	w_->pending = ++pendingcnt [ABSPRI (w_)];
465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468	}	537	}
469		538
470	void inline_size	539	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	541	{
473	int i;	542	int i;
474		543
475	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
507	}	576	}
508		577
509	void	578	void
510	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
511	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
512	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
513	}	583	}
514		584
515	void inline_size	585	void inline_size
516	fd_reify (EV_P)	586	fd_reify (EV_P)
517	{	587	{
…		…
521	{	591	{
522	int fd = fdchanges [i];	592	int fd = fdchanges [i];
523	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
524	ev_io *w;	594	ev_io *w;
525		595
526	int events = 0;	596	unsigned char events = 0;
527		597
528	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	598	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
529	events \|= w->events;	599	events \|= (unsigned char)w->events;
530		600
531	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
532	if (events)	602	if (events)
533	{	603	{
534	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
535	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537	}	611	}
538	#endif	612	#endif
539		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
540	anfd->reify = 0;	618	anfd->reify = 0;
541
542	backend_modify (EV_A_ fd, anfd->events, events);
543	anfd->events = events;	619	anfd->events = events;
		620
		621	if (o_events != events \|\| o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
544	}	624	}
545		625
546	fdchangecnt = 0;	626	fdchangecnt = 0;
547	}	627	}
548		628
549	void inline_size	629	void inline_size
550	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
551	{	631	{
552	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
553	return;
554
555	anfds [fd].reify = 1;	633	anfds [fd].reify \|= flags;
556		634
		635	if (expect_true (!reify))
		636	{
557	++fdchangecnt;	637	++fdchangecnt;
558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
560	}	641	}
561		642
562	void inline_speed	643	void inline_speed
563	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
564	{	645	{
…		…
615		696
616	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
617	if (anfds [fd].events)	698	if (anfds [fd].events)
618	{	699	{
619	anfds [fd].events = 0;	700	anfds [fd].events = 0;
620	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
621	}	702	}
622	}	703	}
623		704
624	/*****************************************************************************/	705	/*****************************************************************************/
625		706
626	void inline_speed	707	void inline_speed
627	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
628	{	709	{
629	WT w = heap [k];	710	WT w = heap [k];
630		711
631	while (k && heap [k >> 1]->at > w->at)	712	while (k)
632	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
633	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
634	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
635	k >>= 1;	721	k = p;
636	}	722	}
637		723
638	heap [k] = w;	724	heap [k] = w;
639	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
640
641	}	726	}
642		727
643	void inline_speed	728	void inline_speed
644	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
645	{	730	{
646	WT w = heap [k];	731	WT w = heap [k];
647		732
648	while (k < (N >> 1))	733	for (;;)
649	{	734	{
650	int j = k << 1;	735	int c = (k << 1) + 1;
651		736
652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
653	++j;
654
655	if (w->at <= heap [j]->at)
656	break;	738	break;
657		739
		740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		741	? 1 : 0;
		742
		743	if (w->at <= heap [c]->at)
		744	break;
		745
658	heap [k] = heap [j];	746	heap [k] = heap [c];
659	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
660	k = j;	749	k = c;
661	}	750	}
662		751
663	heap [k] = w;	752	heap [k] = w;
664	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
665	}	754	}
…		…
674	/*****************************************************************************/	763	/*****************************************************************************/
675		764
676	typedef struct	765	typedef struct
677	{	766	{
678	WL head;	767	WL head;
679	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
680	} ANSIG;	769	} ANSIG;
681		770
682	static ANSIG *signals;	771	static ANSIG *signals;
683	static int signalmax;	772	static int signalmax;
684		773
685	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
686	static sig_atomic_t volatile gotsig;
687	static ev_io sigev;
688		775
689	void inline_size	776	void inline_size
690	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
691	{	778	{
692	while (count--)	779	while (count--)
…		…
696		783
697	++base;	784	++base;
698	}	785	}
699	}	786	}
700		787
701	static void	788	/*****************************************************************************/
702	sighandler (int signum)
703	{
704	#if _WIN32
705	signal (signum, sighandler);
706	#endif
707		789
708	signals [signum - 1].gotsig = 1;
709
710	if (!gotsig)
711	{
712	int old_errno = errno;
713	gotsig = 1;
714	write (sigpipe [1], &signum, 1);
715	errno = old_errno;
716	}
717	}
718
719	void noinline
720	ev_feed_signal_event (EV_P_ int signum)
721	{
722	WL w;
723
724	#if EV_MULTIPLICITY
725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726	#endif
727
728	--signum;
729
730	if (signum < 0 \|\| signum >= signalmax)
731	return;
732
733	signals [signum].gotsig = 0;
734
735	for (w = signals [signum].head; w; w = w->next)
736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737	}
738
739	static void
740	sigcb (EV_P_ ev_io *iow, int revents)
741	{
742	int signum;
743
744	read (sigpipe [0], &revents, 1);
745	gotsig = 0;
746
747	for (signum = signalmax; signum--; )
748	if (signals [signum].gotsig)
749	ev_feed_signal_event (EV_A_ signum + 1);
750	}
751
752	void inline_size	790	void inline_speed
753	fd_intern (int fd)	791	fd_intern (int fd)
754	{	792	{
755	#ifdef _WIN32	793	#ifdef _WIN32
756	int arg = 1;	794	int arg = 1;
757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
760	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
761	#endif	799	#endif
762	}	800	}
763		801
764	static void noinline	802	static void noinline
765	siginit (EV_P)	803	evpipe_init (EV_P)
766	{	804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
767	fd_intern (sigpipe [0]);	810	fd_intern (evpipe [0]);
768	fd_intern (sigpipe [1]);	811	fd_intern (evpipe [1]);
769		812
770	ev_io_set (&sigev, sigpipe [0], EV_READ);	813	ev_io_set (&pipeev, evpipe [0], EV_READ);
771	ev_io_start (EV_A_ &sigev);	814	ev_io_start (EV_A_ &pipeev);
772	ev_unref (EV_A); /* child watcher should not keep loop alive */	815	ev_unref (EV_A); /* watcher should not keep loop alive */
		816	}
		817	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ int sig, int async)
		821	{
		822	if (!(gotasync \|\| gotsig))
		823	{
		824	int old_errno = errno; /* save errno becaue write might clobber it */
		825
		826	if (sig) gotsig = 1;
		827	if (async) gotasync = 1;
		828
		829	write (evpipe [1], &old_errno, 1);
		830
		831	errno = old_errno;
		832	}
		833	}
		834
		835	static void
		836	pipecb (EV_P_ ev_io *iow, int revents)
		837	{
		838	{
		839	int dummy;
		840	read (evpipe [0], &dummy, 1);
		841	}
		842
		843	if (gotsig)
		844	{
		845	int signum;
		846	gotsig = 0;
		847
		848	for (signum = signalmax; signum--; )
		849	if (signals [signum].gotsig)
		850	ev_feed_signal_event (EV_A_ signum + 1);
		851	}
		852
		853	#if EV_ASYNC_ENABLE
		854	if (gotasync)
		855	{
		856	int i;
		857	gotasync = 0;
		858
		859	for (i = asynccnt; i--; )
		860	if (asyncs [i]->sent)
		861	{
		862	asyncs [i]->sent = 0;
		863	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		864	}
		865	}
		866	#endif
773	}	867	}
774		868
775	/*****************************************************************************/	869	/*****************************************************************************/
776		870
		871	static void
		872	sighandler (int signum)
		873	{
		874	#if EV_MULTIPLICITY
		875	struct ev_loop *loop = &default_loop_struct;
		876	#endif
		877
		878	#if _WIN32
		879	signal (signum, sighandler);
		880	#endif
		881
		882	signals [signum - 1].gotsig = 1;
		883	evpipe_write (EV_A_ 1, 0);
		884	}
		885
		886	void noinline
		887	ev_feed_signal_event (EV_P_ int signum)
		888	{
		889	WL w;
		890
		891	#if EV_MULTIPLICITY
		892	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		893	#endif
		894
		895	--signum;
		896
		897	if (signum < 0 \|\| signum >= signalmax)
		898	return;
		899
		900	signals [signum].gotsig = 0;
		901
		902	for (w = signals [signum].head; w; w = w->next)
		903	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		904	}
		905
		906	/*****************************************************************************/
		907
777	static ev_child *childs [EV_PID_HASHSIZE];	908	static WL childs [EV_PID_HASHSIZE];
778		909
779	#ifndef _WIN32	910	#ifndef _WIN32
780		911
781	static ev_signal childev;	912	static ev_signal childev;
		913
		914	#ifndef WIFCONTINUED
		915	# define WIFCONTINUED(status) 0
		916	#endif
782		917
783	void inline_speed	918	void inline_speed
784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	919	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
785	{	920	{
786	ev_child *w;	921	ev_child *w;
		922	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
787		923
788	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	924	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		925	{
789	if (w->pid == pid \|\| !w->pid)	926	if ((w->pid == pid \|\| !w->pid)
		927	&& (!traced \|\| (w->flags & 1)))
790	{	928	{
791	ev_priority (w) = ev_priority (sw); /* need to do it now */	929	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
792	w->rpid = pid;	930	w->rpid = pid;
793	w->rstatus = status;	931	w->rstatus = status;
794	ev_feed_event (EV_A_ (W)w, EV_CHILD);	932	ev_feed_event (EV_A_ (W)w, EV_CHILD);
795	}	933	}
		934	}
796	}	935	}
797		936
798	#ifndef WCONTINUED	937	#ifndef WCONTINUED
799	# define WCONTINUED 0	938	# define WCONTINUED 0
800	#endif	939	#endif
…		…
897	}	1036	}
898		1037
899	unsigned int	1038	unsigned int
900	ev_embeddable_backends (void)	1039	ev_embeddable_backends (void)
901	{	1040	{
902	return EVBACKEND_EPOLL	1041	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
903	\| EVBACKEND_KQUEUE	1042
904	\| EVBACKEND_PORT;	1043	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1044	/* please fix it and tell me how to detect the fix */
		1045	flags &= ~EVBACKEND_EPOLL;
		1046
		1047	return flags;
905	}	1048	}
906		1049
907	unsigned int	1050	unsigned int
908	ev_backend (EV_P)	1051	ev_backend (EV_P)
909	{	1052	{
…		…
912		1055
913	unsigned int	1056	unsigned int
914	ev_loop_count (EV_P)	1057	ev_loop_count (EV_P)
915	{	1058	{
916	return loop_count;	1059	return loop_count;
		1060	}
		1061
		1062	void
		1063	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1064	{
		1065	io_blocktime = interval;
		1066	}
		1067
		1068	void
		1069	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1070	{
		1071	timeout_blocktime = interval;
917	}	1072	}
918		1073
919	static void noinline	1074	static void noinline
920	loop_init (EV_P_ unsigned int flags)	1075	loop_init (EV_P_ unsigned int flags)
921	{	1076	{
…		…
927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1082	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928	have_monotonic = 1;	1083	have_monotonic = 1;
929	}	1084	}
930	#endif	1085	#endif
931		1086
932	ev_rt_now = ev_time ();	1087	ev_rt_now = ev_time ();
933	mn_now = get_clock ();	1088	mn_now = get_clock ();
934	now_floor = mn_now;	1089	now_floor = mn_now;
935	rtmn_diff = ev_rt_now - mn_now;	1090	rtmn_diff = ev_rt_now - mn_now;
		1091
		1092	io_blocktime = 0.;
		1093	timeout_blocktime = 0.;
		1094	backend = 0;
		1095	backend_fd = -1;
		1096	gotasync = 0;
		1097	#if EV_USE_INOTIFY
		1098	fs_fd = -2;
		1099	#endif
936		1100
937	/* pid check not overridable via env */	1101	/* pid check not overridable via env */
938	#ifndef _WIN32	1102	#ifndef _WIN32
939	if (flags & EVFLAG_FORKCHECK)	1103	if (flags & EVFLAG_FORKCHECK)
940	curpid = getpid ();	1104	curpid = getpid ();
…		…
946	flags = atoi (getenv ("LIBEV_FLAGS"));	1110	flags = atoi (getenv ("LIBEV_FLAGS"));
947		1111
948	if (!(flags & 0x0000ffffUL))	1112	if (!(flags & 0x0000ffffUL))
949	flags \|= ev_recommended_backends ();	1113	flags \|= ev_recommended_backends ();
950		1114
951	backend = 0;
952	backend_fd = -1;
953	#if EV_USE_INOTIFY
954	fs_fd = -2;
955	#endif
956
957	#if EV_USE_PORT	1115	#if EV_USE_PORT
958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1116	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959	#endif	1117	#endif
960	#if EV_USE_KQUEUE	1118	#if EV_USE_KQUEUE
961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1119	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
968	#endif	1126	#endif
969	#if EV_USE_SELECT	1127	#if EV_USE_SELECT
970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1128	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971	#endif	1129	#endif
972		1130
973	ev_init (&sigev, sigcb);	1131	ev_init (&pipeev, pipecb);
974	ev_set_priority (&sigev, EV_MAXPRI);	1132	ev_set_priority (&pipeev, EV_MAXPRI);
975	}	1133	}
976	}	1134	}
977		1135
978	static void noinline	1136	static void noinline
979	loop_destroy (EV_P)	1137	loop_destroy (EV_P)
980	{	1138	{
981	int i;	1139	int i;
		1140
		1141	if (ev_is_active (&pipeev))
		1142	{
		1143	ev_ref (EV_A); /* signal watcher */
		1144	ev_io_stop (EV_A_ &pipeev);
		1145
		1146	close (evpipe [0]); evpipe [0] = 0;
		1147	close (evpipe [1]); evpipe [1] = 0;
		1148	}
982		1149
983	#if EV_USE_INOTIFY	1150	#if EV_USE_INOTIFY
984	if (fs_fd >= 0)	1151	if (fs_fd >= 0)
985	close (fs_fd);	1152	close (fs_fd);
986	#endif	1153	#endif
…		…
1003	#if EV_USE_SELECT	1170	#if EV_USE_SELECT
1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1171	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1005	#endif	1172	#endif
1006		1173
1007	for (i = NUMPRI; i--; )	1174	for (i = NUMPRI; i--; )
		1175	{
1008	array_free (pending, [i]);	1176	array_free (pending, [i]);
		1177	#if EV_IDLE_ENABLE
		1178	array_free (idle, [i]);
		1179	#endif
		1180	}
		1181
		1182	ev_free (anfds); anfdmax = 0;
1009		1183
1010	/* have to use the microsoft-never-gets-it-right macro */	1184	/* have to use the microsoft-never-gets-it-right macro */
1011	array_free (fdchange, EMPTY0);	1185	array_free (fdchange, EMPTY);
1012	array_free (timer, EMPTY0);	1186	array_free (timer, EMPTY);
1013	#if EV_PERIODIC_ENABLE	1187	#if EV_PERIODIC_ENABLE
1014	array_free (periodic, EMPTY0);	1188	array_free (periodic, EMPTY);
1015	#endif	1189	#endif
		1190	#if EV_FORK_ENABLE
1016	array_free (idle, EMPTY0);	1191	array_free (fork, EMPTY);
		1192	#endif
1017	array_free (prepare, EMPTY0);	1193	array_free (prepare, EMPTY);
1018	array_free (check, EMPTY0);	1194	array_free (check, EMPTY);
		1195	#if EV_ASYNC_ENABLE
		1196	array_free (async, EMPTY);
		1197	#endif
1019		1198
1020	backend = 0;	1199	backend = 0;
1021	}	1200	}
1022		1201
1023	void inline_size infy_fork (EV_P);	1202	void inline_size infy_fork (EV_P);
…		…
1036	#endif	1215	#endif
1037	#if EV_USE_INOTIFY	1216	#if EV_USE_INOTIFY
1038	infy_fork (EV_A);	1217	infy_fork (EV_A);
1039	#endif	1218	#endif
1040		1219
1041	if (ev_is_active (&sigev))	1220	if (ev_is_active (&pipeev))
1042	{	1221	{
1043	/* default loop */	1222	/* this "locks" the handlers against writing to the pipe */
		1223	gotsig = gotasync = 1;
1044		1224
1045	ev_ref (EV_A);	1225	ev_ref (EV_A);
1046	ev_io_stop (EV_A_ &sigev);	1226	ev_io_stop (EV_A_ &pipeev);
1047	close (sigpipe [0]);	1227	close (evpipe [0]);
1048	close (sigpipe [1]);	1228	close (evpipe [1]);
1049		1229
1050	while (pipe (sigpipe))
1051	syserr ("(libev) error creating pipe");
1052
1053	siginit (EV_A);	1230	evpipe_init (EV_A);
		1231	/* now iterate over everything, in case we missed something */
		1232	pipecb (EV_A_ &pipeev, EV_READ);
1054	}	1233	}
1055		1234
1056	postfork = 0;	1235	postfork = 0;
1057	}	1236	}
1058		1237
…		…
1080	}	1259	}
1081		1260
1082	void	1261	void
1083	ev_loop_fork (EV_P)	1262	ev_loop_fork (EV_P)
1084	{	1263	{
1085	postfork = 1;	1264	postfork = 1; /* must be in line with ev_default_fork */
1086	}	1265	}
1087		1266
1088	#endif	1267	#endif
1089		1268
1090	#if EV_MULTIPLICITY	1269	#if EV_MULTIPLICITY
…		…
1093	#else	1272	#else
1094	int	1273	int
1095	ev_default_loop (unsigned int flags)	1274	ev_default_loop (unsigned int flags)
1096	#endif	1275	#endif
1097	{	1276	{
1098	if (sigpipe [0] == sigpipe [1])
1099	if (pipe (sigpipe))
1100	return 0;
1101
1102	if (!ev_default_loop_ptr)	1277	if (!ev_default_loop_ptr)
1103	{	1278	{
1104	#if EV_MULTIPLICITY	1279	#if EV_MULTIPLICITY
1105	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1280	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1106	#else	1281	#else
…		…
1109		1284
1110	loop_init (EV_A_ flags);	1285	loop_init (EV_A_ flags);
1111		1286
1112	if (ev_backend (EV_A))	1287	if (ev_backend (EV_A))
1113	{	1288	{
1114	siginit (EV_A);
1115
1116	#ifndef _WIN32	1289	#ifndef _WIN32
1117	ev_signal_init (&childev, childcb, SIGCHLD);	1290	ev_signal_init (&childev, childcb, SIGCHLD);
1118	ev_set_priority (&childev, EV_MAXPRI);	1291	ev_set_priority (&childev, EV_MAXPRI);
1119	ev_signal_start (EV_A_ &childev);	1292	ev_signal_start (EV_A_ &childev);
1120	ev_unref (EV_A); /* child watcher should not keep loop alive */	1293	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1137	#ifndef _WIN32	1310	#ifndef _WIN32
1138	ev_ref (EV_A); /* child watcher */	1311	ev_ref (EV_A); /* child watcher */
1139	ev_signal_stop (EV_A_ &childev);	1312	ev_signal_stop (EV_A_ &childev);
1140	#endif	1313	#endif
1141		1314
1142	ev_ref (EV_A); /* signal watcher */
1143	ev_io_stop (EV_A_ &sigev);
1144
1145	close (sigpipe [0]); sigpipe [0] = 0;
1146	close (sigpipe [1]); sigpipe [1] = 0;
1147
1148	loop_destroy (EV_A);	1315	loop_destroy (EV_A);
1149	}	1316	}
1150		1317
1151	void	1318	void
1152	ev_default_fork (void)	1319	ev_default_fork (void)
…		…
1154	#if EV_MULTIPLICITY	1321	#if EV_MULTIPLICITY
1155	struct ev_loop *loop = ev_default_loop_ptr;	1322	struct ev_loop *loop = ev_default_loop_ptr;
1156	#endif	1323	#endif
1157		1324
1158	if (backend)	1325	if (backend)
1159	postfork = 1;	1326	postfork = 1; /* must be in line with ev_loop_fork */
1160	}	1327	}
1161		1328
1162	/*****************************************************************************/	1329	/*****************************************************************************/
1163		1330
1164	int inline_size	1331	void
1165	any_pending (EV_P)	1332	ev_invoke (EV_P_ void *w, int revents)
1166	{	1333	{
1167	int pri;	1334	EV_CB_INVOKE ((W)w, revents);
1168
1169	for (pri = NUMPRI; pri--; )
1170	if (pendingcnt [pri])
1171	return 1;
1172
1173	return 0;
1174	}	1335	}
1175		1336
1176	void inline_speed	1337	void inline_speed
1177	call_pending (EV_P)	1338	call_pending (EV_P)
1178	{	1339	{
…		…
1196	void inline_size	1357	void inline_size
1197	timers_reify (EV_P)	1358	timers_reify (EV_P)
1198	{	1359	{
1199	while (timercnt && ((WT)timers [0])->at <= mn_now)	1360	while (timercnt && ((WT)timers [0])->at <= mn_now)
1200	{	1361	{
1201	ev_timer *w = timers [0];	1362	ev_timer w = (ev_timer )timers [0];
1202		1363
1203	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1364	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1204		1365
1205	/* first reschedule or stop timer */	1366	/* first reschedule or stop timer */
1206	if (w->repeat)	1367	if (w->repeat)
…		…
1209		1370
1210	((WT)w)->at += w->repeat;	1371	((WT)w)->at += w->repeat;
1211	if (((WT)w)->at < mn_now)	1372	if (((WT)w)->at < mn_now)
1212	((WT)w)->at = mn_now;	1373	((WT)w)->at = mn_now;
1213		1374
1214	downheap ((WT *)timers, timercnt, 0);	1375	downheap (timers, timercnt, 0);
1215	}	1376	}
1216	else	1377	else
1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1378	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218		1379
1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1380	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1224	void inline_size	1385	void inline_size
1225	periodics_reify (EV_P)	1386	periodics_reify (EV_P)
1226	{	1387	{
1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1388	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1228	{	1389	{
1229	ev_periodic *w = periodics [0];	1390	ev_periodic w = (ev_periodic )periodics [0];
1230		1391
1231	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1392	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1232		1393
1233	/* first reschedule or stop timer */	1394	/* first reschedule or stop timer */
1234	if (w->reschedule_cb)	1395	if (w->reschedule_cb)
1235	{	1396	{
1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1397	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1398	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238	downheap ((WT *)periodics, periodiccnt, 0);	1399	downheap (periodics, periodiccnt, 0);
1239	}	1400	}
1240	else if (w->interval)	1401	else if (w->interval)
1241	{	1402	{
1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1403	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1404	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1405	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1244	downheap ((WT *)periodics, periodiccnt, 0);	1406	downheap (periodics, periodiccnt, 0);
1245	}	1407	}
1246	else	1408	else
1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1409	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248		1410
1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1411	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1256	int i;	1418	int i;
1257		1419
1258	/* adjust periodics after time jump */	1420	/* adjust periodics after time jump */
1259	for (i = 0; i < periodiccnt; ++i)	1421	for (i = 0; i < periodiccnt; ++i)
1260	{	1422	{
1261	ev_periodic *w = periodics [i];	1423	ev_periodic w = (ev_periodic )periodics [i];
1262		1424
1263	if (w->reschedule_cb)	1425	if (w->reschedule_cb)
1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1426	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1265	else if (w->interval)	1427	else if (w->interval)
1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1428	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1267	}	1429	}
1268		1430
1269	/* now rebuild the heap */	1431	/* now rebuild the heap */
1270	for (i = periodiccnt >> 1; i--; )	1432	for (i = periodiccnt >> 1; i--; )
1271	downheap ((WT *)periodics, periodiccnt, i);	1433	downheap (periodics, periodiccnt, i);
1272	}	1434	}
1273	#endif	1435	#endif
1274		1436
		1437	#if EV_IDLE_ENABLE
1275	int inline_size	1438	void inline_size
1276	time_update_monotonic (EV_P)	1439	idle_reify (EV_P)
1277	{	1440	{
		1441	if (expect_false (idleall))
		1442	{
		1443	int pri;
		1444
		1445	for (pri = NUMPRI; pri--; )
		1446	{
		1447	if (pendingcnt [pri])
		1448	break;
		1449
		1450	if (idlecnt [pri])
		1451	{
		1452	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1453	break;
		1454	}
		1455	}
		1456	}
		1457	}
		1458	#endif
		1459
		1460	void inline_speed
		1461	time_update (EV_P_ ev_tstamp max_block)
		1462	{
		1463	int i;
		1464
		1465	#if EV_USE_MONOTONIC
		1466	if (expect_true (have_monotonic))
		1467	{
		1468	ev_tstamp odiff = rtmn_diff;
		1469
1278	mn_now = get_clock ();	1470	mn_now = get_clock ();
1279		1471
		1472	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1473	/* interpolate in the meantime */
1280	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1474	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1281	{	1475	{
1282	ev_rt_now = rtmn_diff + mn_now;	1476	ev_rt_now = rtmn_diff + mn_now;
1283	return 0;	1477	return;
1284	}	1478	}
1285	else	1479
1286	{
1287	now_floor = mn_now;	1480	now_floor = mn_now;
1288	ev_rt_now = ev_time ();	1481	ev_rt_now = ev_time ();
1289	return 1;
1290	}
1291	}
1292		1482
1293	void inline_size	1483	/* loop a few times, before making important decisions.
1294	time_update (EV_P)	1484	* on the choice of "4": one iteration isn't enough,
1295	{	1485	* in case we get preempted during the calls to
1296	int i;	1486	* ev_time and get_clock. a second call is almost guaranteed
1297		1487	* to succeed in that case, though. and looping a few more times
1298	#if EV_USE_MONOTONIC	1488	* doesn't hurt either as we only do this on time-jumps or
1299	if (expect_true (have_monotonic))	1489	* in the unlikely event of having been preempted here.
1300	{	1490	*/
1301	if (time_update_monotonic (EV_A))	1491	for (i = 4; --i; )
1302	{	1492	{
1303	ev_tstamp odiff = rtmn_diff;
1304
1305	/* loop a few times, before making important decisions.
1306	* on the choice of "4": one iteration isn't enough,
1307	* in case we get preempted during the calls to
1308	* ev_time and get_clock. a second call is almost guaranteed
1309	* to succeed in that case, though. and looping a few more times
1310	* doesn't hurt either as we only do this on time-jumps or
1311	* in the unlikely event of having been preempted here.
1312	*/
1313	for (i = 4; --i; )
1314	{
1315	rtmn_diff = ev_rt_now - mn_now;	1493	rtmn_diff = ev_rt_now - mn_now;
1316		1494
1317	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1495	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1318	return; /* all is well */	1496	return; /* all is well */
1319		1497
1320	ev_rt_now = ev_time ();	1498	ev_rt_now = ev_time ();
1321	mn_now = get_clock ();	1499	mn_now = get_clock ();
1322	now_floor = mn_now;	1500	now_floor = mn_now;
1323	}	1501	}
1324		1502
1325	# if EV_PERIODIC_ENABLE	1503	# if EV_PERIODIC_ENABLE
1326	periodics_reschedule (EV_A);	1504	periodics_reschedule (EV_A);
1327	# endif	1505	# endif
1328	/* no timer adjustment, as the monotonic clock doesn't jump */	1506	/* no timer adjustment, as the monotonic clock doesn't jump */
1329	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1507	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1330	}
1331	}	1508	}
1332	else	1509	else
1333	#endif	1510	#endif
1334	{	1511	{
1335	ev_rt_now = ev_time ();	1512	ev_rt_now = ev_time ();
1336		1513
1337	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1514	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1338	{	1515	{
1339	#if EV_PERIODIC_ENABLE	1516	#if EV_PERIODIC_ENABLE
1340	periodics_reschedule (EV_A);	1517	periodics_reschedule (EV_A);
1341	#endif	1518	#endif
1342
1343	/* adjust timers. this is easy, as the offset is the same for all of them */	1519	/* adjust timers. this is easy, as the offset is the same for all of them */
1344	for (i = 0; i < timercnt; ++i)	1520	for (i = 0; i < timercnt; ++i)
1345	((WT)timers [i])->at += ev_rt_now - mn_now;	1521	((WT)timers [i])->at += ev_rt_now - mn_now;
1346	}	1522	}
1347		1523
…		…
1391	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1567	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392	call_pending (EV_A);	1568	call_pending (EV_A);
1393	}	1569	}
1394	#endif	1570	#endif
1395		1571
1396	/* queue check watchers (and execute them) */	1572	/* queue prepare watchers (and execute them) */
1397	if (expect_false (preparecnt))	1573	if (expect_false (preparecnt))
1398	{	1574	{
1399	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1575	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1400	call_pending (EV_A);	1576	call_pending (EV_A);
1401	}	1577	}
…		…
1410	/* update fd-related kernel structures */	1586	/* update fd-related kernel structures */
1411	fd_reify (EV_A);	1587	fd_reify (EV_A);
1412		1588
1413	/* calculate blocking time */	1589	/* calculate blocking time */
1414	{	1590	{
1415	ev_tstamp block;	1591	ev_tstamp waittime = 0.;
		1592	ev_tstamp sleeptime = 0.;
1416		1593
1417	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idlecnt \|\| !activecnt))	1594	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1418	block = 0.; /* do not block at all */
1419	else
1420	{	1595	{
1421	/* update time to cancel out callback processing overhead */	1596	/* update time to cancel out callback processing overhead */
1422	#if EV_USE_MONOTONIC
1423	if (expect_true (have_monotonic))
1424	time_update_monotonic (EV_A);	1597	time_update (EV_A_ 1e100);
1425	else
1426	#endif
1427	{
1428	ev_rt_now = ev_time ();
1429	mn_now = ev_rt_now;
1430	}
1431		1598
1432	block = MAX_BLOCKTIME;	1599	waittime = MAX_BLOCKTIME;
1433		1600
1434	if (timercnt)	1601	if (timercnt)
1435	{	1602	{
1436	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1603	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1437	if (block > to) block = to;	1604	if (waittime > to) waittime = to;
1438	}	1605	}
1439		1606
1440	#if EV_PERIODIC_ENABLE	1607	#if EV_PERIODIC_ENABLE
1441	if (periodiccnt)	1608	if (periodiccnt)
1442	{	1609	{
1443	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1610	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1444	if (block > to) block = to;	1611	if (waittime > to) waittime = to;
1445	}	1612	}
1446	#endif	1613	#endif
1447		1614
1448	if (expect_false (block < 0.)) block = 0.;	1615	if (expect_false (waittime < timeout_blocktime))
		1616	waittime = timeout_blocktime;
		1617
		1618	sleeptime = waittime - backend_fudge;
		1619
		1620	if (expect_true (sleeptime > io_blocktime))
		1621	sleeptime = io_blocktime;
		1622
		1623	if (sleeptime)
		1624	{
		1625	ev_sleep (sleeptime);
		1626	waittime -= sleeptime;
		1627	}
1449	}	1628	}
1450		1629
1451	++loop_count;	1630	++loop_count;
1452	backend_poll (EV_A_ block);	1631	backend_poll (EV_A_ waittime);
		1632
		1633	/* update ev_rt_now, do magic */
		1634	time_update (EV_A_ waittime + sleeptime);
1453	}	1635	}
1454
1455	/* update ev_rt_now, do magic */
1456	time_update (EV_A);
1457		1636
1458	/* queue pending timers and reschedule them */	1637	/* queue pending timers and reschedule them */
1459	timers_reify (EV_A); /* relative timers called last */	1638	timers_reify (EV_A); /* relative timers called last */
1460	#if EV_PERIODIC_ENABLE	1639	#if EV_PERIODIC_ENABLE
1461	periodics_reify (EV_A); /* absolute timers called first */	1640	periodics_reify (EV_A); /* absolute timers called first */
1462	#endif	1641	#endif
1463		1642
		1643	#if EV_IDLE_ENABLE
1464	/* queue idle watchers unless other events are pending */	1644	/* queue idle watchers unless other events are pending */
1465	if (idlecnt && !any_pending (EV_A))	1645	idle_reify (EV_A);
1466	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1646	#endif
1467		1647
1468	/* queue check watchers, to be executed first */	1648	/* queue check watchers, to be executed first */
1469	if (expect_false (checkcnt))	1649	if (expect_false (checkcnt))
1470	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1650	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1471		1651
…		…
1507	head = &(*head)->next;	1687	head = &(*head)->next;
1508	}	1688	}
1509	}	1689	}
1510		1690
1511	void inline_speed	1691	void inline_speed
1512	ev_clear_pending (EV_P_ W w)	1692	clear_pending (EV_P_ W w)
1513	{	1693	{
1514	if (w->pending)	1694	if (w->pending)
1515	{	1695	{
1516	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1696	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1517	w->pending = 0;	1697	w->pending = 0;
1518	}	1698	}
1519	}	1699	}
1520		1700
		1701	int
		1702	ev_clear_pending (EV_P_ void *w)
		1703	{
		1704	W w_ = (W)w;
		1705	int pending = w_->pending;
		1706
		1707	if (expect_true (pending))
		1708	{
		1709	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1710	w_->pending = 0;
		1711	p->w = 0;
		1712	return p->events;
		1713	}
		1714	else
		1715	return 0;
		1716	}
		1717
		1718	void inline_size
		1719	pri_adjust (EV_P_ W w)
		1720	{
		1721	int pri = w->priority;
		1722	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1723	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1724	w->priority = pri;
		1725	}
		1726
1521	void inline_speed	1727	void inline_speed
1522	ev_start (EV_P_ W w, int active)	1728	ev_start (EV_P_ W w, int active)
1523	{	1729	{
1524	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1730	pri_adjust (EV_A_ w);
1525	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1526
1527	w->active = active;	1731	w->active = active;
1528	ev_ref (EV_A);	1732	ev_ref (EV_A);
1529	}	1733	}
1530		1734
1531	void inline_size	1735	void inline_size
…		…
1535	w->active = 0;	1739	w->active = 0;
1536	}	1740	}
1537		1741
1538	/*****************************************************************************/	1742	/*****************************************************************************/
1539		1743
1540	void	1744	void noinline
1541	ev_io_start (EV_P_ ev_io *w)	1745	ev_io_start (EV_P_ ev_io *w)
1542	{	1746	{
1543	int fd = w->fd;	1747	int fd = w->fd;
1544		1748
1545	if (expect_false (ev_is_active (w)))	1749	if (expect_false (ev_is_active (w)))
…		…
1547		1751
1548	assert (("ev_io_start called with negative fd", fd >= 0));	1752	assert (("ev_io_start called with negative fd", fd >= 0));
1549		1753
1550	ev_start (EV_A_ (W)w, 1);	1754	ev_start (EV_A_ (W)w, 1);
1551	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1755	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1552	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1756	wlist_add (&anfds[fd].head, (WL)w);
1553		1757
1554	fd_change (EV_A_ fd);	1758	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1759	w->events &= ~EV_IOFDSET;
1555	}	1760	}
1556		1761
1557	void	1762	void noinline
1558	ev_io_stop (EV_P_ ev_io *w)	1763	ev_io_stop (EV_P_ ev_io *w)
1559	{	1764	{
1560	ev_clear_pending (EV_A_ (W)w);	1765	clear_pending (EV_A_ (W)w);
1561	if (expect_false (!ev_is_active (w)))	1766	if (expect_false (!ev_is_active (w)))
1562	return;	1767	return;
1563		1768
1564	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1769	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1565		1770
1566	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1771	wlist_del (&anfds[w->fd].head, (WL)w);
1567	ev_stop (EV_A_ (W)w);	1772	ev_stop (EV_A_ (W)w);
1568		1773
1569	fd_change (EV_A_ w->fd);	1774	fd_change (EV_A_ w->fd, 1);
1570	}	1775	}
1571		1776
1572	void	1777	void noinline
1573	ev_timer_start (EV_P_ ev_timer *w)	1778	ev_timer_start (EV_P_ ev_timer *w)
1574	{	1779	{
1575	if (expect_false (ev_is_active (w)))	1780	if (expect_false (ev_is_active (w)))
1576	return;	1781	return;
1577		1782
1578	((WT)w)->at += mn_now;	1783	((WT)w)->at += mn_now;
1579		1784
1580	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1785	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1581		1786
1582	ev_start (EV_A_ (W)w, ++timercnt);	1787	ev_start (EV_A_ (W)w, ++timercnt);
1583	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1788	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1584	timers [timercnt - 1] = w;	1789	timers [timercnt - 1] = (WT)w;
1585	upheap ((WT *)timers, timercnt - 1);	1790	upheap (timers, timercnt - 1);
1586		1791
1587	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1792	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1588	}	1793	}
1589		1794
1590	void	1795	void noinline
1591	ev_timer_stop (EV_P_ ev_timer *w)	1796	ev_timer_stop (EV_P_ ev_timer *w)
1592	{	1797	{
1593	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1594	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1595	return;	1800	return;
1596		1801
1597	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1802	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1598		1803
1599	{	1804	{
1600	int active = ((W)w)->active;	1805	int active = ((W)w)->active;
1601		1806
1602	if (expect_true (--active < --timercnt))	1807	if (expect_true (--active < --timercnt))
1603	{	1808	{
1604	timers [active] = timers [timercnt];	1809	timers [active] = timers [timercnt];
1605	adjustheap ((WT *)timers, timercnt, active);	1810	adjustheap (timers, timercnt, active);
1606	}	1811	}
1607	}	1812	}
1608		1813
1609	((WT)w)->at -= mn_now;	1814	((WT)w)->at -= mn_now;
1610		1815
1611	ev_stop (EV_A_ (W)w);	1816	ev_stop (EV_A_ (W)w);
1612	}	1817	}
1613		1818
1614	void	1819	void noinline
1615	ev_timer_again (EV_P_ ev_timer *w)	1820	ev_timer_again (EV_P_ ev_timer *w)
1616	{	1821	{
1617	if (ev_is_active (w))	1822	if (ev_is_active (w))
1618	{	1823	{
1619	if (w->repeat)	1824	if (w->repeat)
1620	{	1825	{
1621	((WT)w)->at = mn_now + w->repeat;	1826	((WT)w)->at = mn_now + w->repeat;
1622	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1827	adjustheap (timers, timercnt, ((W)w)->active - 1);
1623	}	1828	}
1624	else	1829	else
1625	ev_timer_stop (EV_A_ w);	1830	ev_timer_stop (EV_A_ w);
1626	}	1831	}
1627	else if (w->repeat)	1832	else if (w->repeat)
…		…
1630	ev_timer_start (EV_A_ w);	1835	ev_timer_start (EV_A_ w);
1631	}	1836	}
1632	}	1837	}
1633		1838
1634	#if EV_PERIODIC_ENABLE	1839	#if EV_PERIODIC_ENABLE
1635	void	1840	void noinline
1636	ev_periodic_start (EV_P_ ev_periodic *w)	1841	ev_periodic_start (EV_P_ ev_periodic *w)
1637	{	1842	{
1638	if (expect_false (ev_is_active (w)))	1843	if (expect_false (ev_is_active (w)))
1639	return;	1844	return;
1640		1845
…		…
1642	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1847	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1643	else if (w->interval)	1848	else if (w->interval)
1644	{	1849	{
1645	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1646	/* this formula differs from the one in periodic_reify because we do not always round up */	1851	/* this formula differs from the one in periodic_reify because we do not always round up */
1647	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1852	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1648	}	1853	}
		1854	else
		1855	((WT)w)->at = w->offset;
1649		1856
1650	ev_start (EV_A_ (W)w, ++periodiccnt);	1857	ev_start (EV_A_ (W)w, ++periodiccnt);
1651	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1858	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1652	periodics [periodiccnt - 1] = w;	1859	periodics [periodiccnt - 1] = (WT)w;
1653	upheap ((WT *)periodics, periodiccnt - 1);	1860	upheap (periodics, periodiccnt - 1);
1654		1861
1655	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1862	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1656	}	1863	}
1657		1864
1658	void	1865	void noinline
1659	ev_periodic_stop (EV_P_ ev_periodic *w)	1866	ev_periodic_stop (EV_P_ ev_periodic *w)
1660	{	1867	{
1661	ev_clear_pending (EV_A_ (W)w);	1868	clear_pending (EV_A_ (W)w);
1662	if (expect_false (!ev_is_active (w)))	1869	if (expect_false (!ev_is_active (w)))
1663	return;	1870	return;
1664		1871
1665	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1872	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1666		1873
1667	{	1874	{
1668	int active = ((W)w)->active;	1875	int active = ((W)w)->active;
1669		1876
1670	if (expect_true (--active < --periodiccnt))	1877	if (expect_true (--active < --periodiccnt))
1671	{	1878	{
1672	periodics [active] = periodics [periodiccnt];	1879	periodics [active] = periodics [periodiccnt];
1673	adjustheap ((WT *)periodics, periodiccnt, active);	1880	adjustheap (periodics, periodiccnt, active);
1674	}	1881	}
1675	}	1882	}
1676		1883
1677	ev_stop (EV_A_ (W)w);	1884	ev_stop (EV_A_ (W)w);
1678	}	1885	}
1679		1886
1680	void	1887	void noinline
1681	ev_periodic_again (EV_P_ ev_periodic *w)	1888	ev_periodic_again (EV_P_ ev_periodic *w)
1682	{	1889	{
1683	/* TODO: use adjustheap and recalculation */	1890	/* TODO: use adjustheap and recalculation */
1684	ev_periodic_stop (EV_A_ w);	1891	ev_periodic_stop (EV_A_ w);
1685	ev_periodic_start (EV_A_ w);	1892	ev_periodic_start (EV_A_ w);
…		…
1688		1895
1689	#ifndef SA_RESTART	1896	#ifndef SA_RESTART
1690	# define SA_RESTART 0	1897	# define SA_RESTART 0
1691	#endif	1898	#endif
1692		1899
1693	void	1900	void noinline
1694	ev_signal_start (EV_P_ ev_signal *w)	1901	ev_signal_start (EV_P_ ev_signal *w)
1695	{	1902	{
1696	#if EV_MULTIPLICITY	1903	#if EV_MULTIPLICITY
1697	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1904	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1698	#endif	1905	#endif
1699	if (expect_false (ev_is_active (w)))	1906	if (expect_false (ev_is_active (w)))
1700	return;	1907	return;
1701		1908
1702	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1909	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1703		1910
		1911	evpipe_init (EV_A);
		1912
		1913	{
		1914	#ifndef _WIN32
		1915	sigset_t full, prev;
		1916	sigfillset (&full);
		1917	sigprocmask (SIG_SETMASK, &full, &prev);
		1918	#endif
		1919
		1920	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1921
		1922	#ifndef _WIN32
		1923	sigprocmask (SIG_SETMASK, &prev, 0);
		1924	#endif
		1925	}
		1926
1704	ev_start (EV_A_ (W)w, 1);	1927	ev_start (EV_A_ (W)w, 1);
1705	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1706	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1928	wlist_add (&signals [w->signum - 1].head, (WL)w);
1707		1929
1708	if (!((WL)w)->next)	1930	if (!((WL)w)->next)
1709	{	1931	{
1710	#if _WIN32	1932	#if _WIN32
1711	signal (w->signum, sighandler);	1933	signal (w->signum, sighandler);
…		…
1717	sigaction (w->signum, &sa, 0);	1939	sigaction (w->signum, &sa, 0);
1718	#endif	1940	#endif
1719	}	1941	}
1720	}	1942	}
1721		1943
1722	void	1944	void noinline
1723	ev_signal_stop (EV_P_ ev_signal *w)	1945	ev_signal_stop (EV_P_ ev_signal *w)
1724	{	1946	{
1725	ev_clear_pending (EV_A_ (W)w);	1947	clear_pending (EV_A_ (W)w);
1726	if (expect_false (!ev_is_active (w)))	1948	if (expect_false (!ev_is_active (w)))
1727	return;	1949	return;
1728		1950
1729	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1951	wlist_del (&signals [w->signum - 1].head, (WL)w);
1730	ev_stop (EV_A_ (W)w);	1952	ev_stop (EV_A_ (W)w);
1731		1953
1732	if (!signals [w->signum - 1].head)	1954	if (!signals [w->signum - 1].head)
1733	signal (w->signum, SIG_DFL);	1955	signal (w->signum, SIG_DFL);
1734	}	1956	}
…		…
1741	#endif	1963	#endif
1742	if (expect_false (ev_is_active (w)))	1964	if (expect_false (ev_is_active (w)))
1743	return;	1965	return;
1744		1966
1745	ev_start (EV_A_ (W)w, 1);	1967	ev_start (EV_A_ (W)w, 1);
1746	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1968	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1747	}	1969	}
1748		1970
1749	void	1971	void
1750	ev_child_stop (EV_P_ ev_child *w)	1972	ev_child_stop (EV_P_ ev_child *w)
1751	{	1973	{
1752	ev_clear_pending (EV_A_ (W)w);	1974	clear_pending (EV_A_ (W)w);
1753	if (expect_false (!ev_is_active (w)))	1975	if (expect_false (!ev_is_active (w)))
1754	return;	1976	return;
1755		1977
1756	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1978	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1757	ev_stop (EV_A_ (W)w);	1979	ev_stop (EV_A_ (W)w);
1758	}	1980	}
1759		1981
1760	#if EV_STAT_ENABLE	1982	#if EV_STAT_ENABLE
1761		1983
…		…
1993	}	2215	}
1994		2216
1995	void	2217	void
1996	ev_stat_stop (EV_P_ ev_stat *w)	2218	ev_stat_stop (EV_P_ ev_stat *w)
1997	{	2219	{
1998	ev_clear_pending (EV_A_ (W)w);	2220	clear_pending (EV_A_ (W)w);
1999	if (expect_false (!ev_is_active (w)))	2221	if (expect_false (!ev_is_active (w)))
2000	return;	2222	return;
2001		2223
2002	#if EV_USE_INOTIFY	2224	#if EV_USE_INOTIFY
2003	infy_del (EV_A_ w);	2225	infy_del (EV_A_ w);
…		…
2006		2228
2007	ev_stop (EV_A_ (W)w);	2229	ev_stop (EV_A_ (W)w);
2008	}	2230	}
2009	#endif	2231	#endif
2010		2232
		2233	#if EV_IDLE_ENABLE
2011	void	2234	void
2012	ev_idle_start (EV_P_ ev_idle *w)	2235	ev_idle_start (EV_P_ ev_idle *w)
2013	{	2236	{
2014	if (expect_false (ev_is_active (w)))	2237	if (expect_false (ev_is_active (w)))
2015	return;	2238	return;
2016		2239
		2240	pri_adjust (EV_A_ (W)w);
		2241
		2242	{
		2243	int active = ++idlecnt [ABSPRI (w)];
		2244
		2245	++idleall;
2017	ev_start (EV_A_ (W)w, ++idlecnt);	2246	ev_start (EV_A_ (W)w, active);
		2247
2018	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2248	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2019	idles [idlecnt - 1] = w;	2249	idles [ABSPRI (w)][active - 1] = w;
		2250	}
2020	}	2251	}
2021		2252
2022	void	2253	void
2023	ev_idle_stop (EV_P_ ev_idle *w)	2254	ev_idle_stop (EV_P_ ev_idle *w)
2024	{	2255	{
2025	ev_clear_pending (EV_A_ (W)w);	2256	clear_pending (EV_A_ (W)w);
2026	if (expect_false (!ev_is_active (w)))	2257	if (expect_false (!ev_is_active (w)))
2027	return;	2258	return;
2028		2259
2029	{	2260	{
2030	int active = ((W)w)->active;	2261	int active = ((W)w)->active;
2031	idles [active - 1] = idles [--idlecnt];	2262
		2263	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2032	((W)idles [active - 1])->active = active;	2264	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2265
		2266	ev_stop (EV_A_ (W)w);
		2267	--idleall;
2033	}	2268	}
2034
2035	ev_stop (EV_A_ (W)w);
2036	}	2269	}
		2270	#endif
2037		2271
2038	void	2272	void
2039	ev_prepare_start (EV_P_ ev_prepare *w)	2273	ev_prepare_start (EV_P_ ev_prepare *w)
2040	{	2274	{
2041	if (expect_false (ev_is_active (w)))	2275	if (expect_false (ev_is_active (w)))
…		…
2047	}	2281	}
2048		2282
2049	void	2283	void
2050	ev_prepare_stop (EV_P_ ev_prepare *w)	2284	ev_prepare_stop (EV_P_ ev_prepare *w)
2051	{	2285	{
2052	ev_clear_pending (EV_A_ (W)w);	2286	clear_pending (EV_A_ (W)w);
2053	if (expect_false (!ev_is_active (w)))	2287	if (expect_false (!ev_is_active (w)))
2054	return;	2288	return;
2055		2289
2056	{	2290	{
2057	int active = ((W)w)->active;	2291	int active = ((W)w)->active;
…		…
2074	}	2308	}
2075		2309
2076	void	2310	void
2077	ev_check_stop (EV_P_ ev_check *w)	2311	ev_check_stop (EV_P_ ev_check *w)
2078	{	2312	{
2079	ev_clear_pending (EV_A_ (W)w);	2313	clear_pending (EV_A_ (W)w);
2080	if (expect_false (!ev_is_active (w)))	2314	if (expect_false (!ev_is_active (w)))
2081	return;	2315	return;
2082		2316
2083	{	2317	{
2084	int active = ((W)w)->active;	2318	int active = ((W)w)->active;
…		…
2091		2325
2092	#if EV_EMBED_ENABLE	2326	#if EV_EMBED_ENABLE
2093	void noinline	2327	void noinline
2094	ev_embed_sweep (EV_P_ ev_embed *w)	2328	ev_embed_sweep (EV_P_ ev_embed *w)
2095	{	2329	{
2096	ev_loop (w->loop, EVLOOP_NONBLOCK);	2330	ev_loop (w->other, EVLOOP_NONBLOCK);
2097	}	2331	}
2098		2332
2099	static void	2333	static void
2100	embed_cb (EV_P_ ev_io *io, int revents)	2334	embed_io_cb (EV_P_ ev_io *io, int revents)
2101	{	2335	{
2102	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2336	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2103		2337
2104	if (ev_cb (w))	2338	if (ev_cb (w))
2105	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2339	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106	else	2340	else
2107	ev_embed_sweep (loop, w);	2341	ev_loop (w->other, EVLOOP_NONBLOCK);
2108	}	2342	}
		2343
		2344	static void
		2345	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2346	{
		2347	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2348
		2349	{
		2350	struct ev_loop *loop = w->other;
		2351
		2352	while (fdchangecnt)
		2353	{
		2354	fd_reify (EV_A);
		2355	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2356	}
		2357	}
		2358	}
		2359
		2360	#if 0
		2361	static void
		2362	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2363	{
		2364	ev_idle_stop (EV_A_ idle);
		2365	}
		2366	#endif
2109		2367
2110	void	2368	void
2111	ev_embed_start (EV_P_ ev_embed *w)	2369	ev_embed_start (EV_P_ ev_embed *w)
2112	{	2370	{
2113	if (expect_false (ev_is_active (w)))	2371	if (expect_false (ev_is_active (w)))
2114	return;	2372	return;
2115		2373
2116	{	2374	{
2117	struct ev_loop *loop = w->loop;	2375	struct ev_loop *loop = w->other;
2118	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2376	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2377	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2120	}	2378	}
2121		2379
2122	ev_set_priority (&w->io, ev_priority (w));	2380	ev_set_priority (&w->io, ev_priority (w));
2123	ev_io_start (EV_A_ &w->io);	2381	ev_io_start (EV_A_ &w->io);
2124		2382
		2383	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2384	ev_set_priority (&w->prepare, EV_MINPRI);
		2385	ev_prepare_start (EV_A_ &w->prepare);
		2386
		2387	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2388
2125	ev_start (EV_A_ (W)w, 1);	2389	ev_start (EV_A_ (W)w, 1);
2126	}	2390	}
2127		2391
2128	void	2392	void
2129	ev_embed_stop (EV_P_ ev_embed *w)	2393	ev_embed_stop (EV_P_ ev_embed *w)
2130	{	2394	{
2131	ev_clear_pending (EV_A_ (W)w);	2395	clear_pending (EV_A_ (W)w);
2132	if (expect_false (!ev_is_active (w)))	2396	if (expect_false (!ev_is_active (w)))
2133	return;	2397	return;
2134		2398
2135	ev_io_stop (EV_A_ &w->io);	2399	ev_io_stop (EV_A_ &w->io);
		2400	ev_prepare_stop (EV_A_ &w->prepare);
2136		2401
2137	ev_stop (EV_A_ (W)w);	2402	ev_stop (EV_A_ (W)w);
2138	}	2403	}
2139	#endif	2404	#endif
2140		2405
…		…
2151	}	2416	}
2152		2417
2153	void	2418	void
2154	ev_fork_stop (EV_P_ ev_fork *w)	2419	ev_fork_stop (EV_P_ ev_fork *w)
2155	{	2420	{
2156	ev_clear_pending (EV_A_ (W)w);	2421	clear_pending (EV_A_ (W)w);
2157	if (expect_false (!ev_is_active (w)))	2422	if (expect_false (!ev_is_active (w)))
2158	return;	2423	return;
2159		2424
2160	{	2425	{
2161	int active = ((W)w)->active;	2426	int active = ((W)w)->active;
…		…
2165		2430
2166	ev_stop (EV_A_ (W)w);	2431	ev_stop (EV_A_ (W)w);
2167	}	2432	}
2168	#endif	2433	#endif
2169		2434
		2435	#if EV_ASYNC_ENABLE
		2436	void
		2437	ev_async_start (EV_P_ ev_async *w)
		2438	{
		2439	if (expect_false (ev_is_active (w)))
		2440	return;
		2441
		2442	evpipe_init (EV_A);
		2443
		2444	ev_start (EV_A_ (W)w, ++asynccnt);
		2445	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2446	asyncs [asynccnt - 1] = w;
		2447	}
		2448
		2449	void
		2450	ev_async_stop (EV_P_ ev_async *w)
		2451	{
		2452	clear_pending (EV_A_ (W)w);
		2453	if (expect_false (!ev_is_active (w)))
		2454	return;
		2455
		2456	{
		2457	int active = ((W)w)->active;
		2458	asyncs [active - 1] = asyncs [--asynccnt];
		2459	((W)asyncs [active - 1])->active = active;
		2460	}
		2461
		2462	ev_stop (EV_A_ (W)w);
		2463	}
		2464
		2465	void
		2466	ev_async_send (EV_P_ ev_async *w)
		2467	{
		2468	w->sent = 1;
		2469	evpipe_write (EV_A_ 0, 1);
		2470	}
		2471	#endif
		2472
2170	/*****************************************************************************/	2473	/*****************************************************************************/
2171		2474
2172	struct ev_once	2475	struct ev_once
2173	{	2476	{
2174	ev_io io;	2477	ev_io io;
…		…
2229	ev_timer_set (&once->to, timeout, 0.);	2532	ev_timer_set (&once->to, timeout, 0.);
2230	ev_timer_start (EV_A_ &once->to);	2533	ev_timer_start (EV_A_ &once->to);
2231	}	2534	}
2232	}	2535	}
2233		2536
		2537	#if EV_MULTIPLICITY
		2538	#include "ev_wrap.h"
		2539	#endif
		2540
2234	#ifdef __cplusplus	2541	#ifdef __cplusplus
2235	}	2542	}
2236	#endif	2543	#endif
2237		2544

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs. Revision 1.210 by root, Sat Feb 9 00:34:11 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.210 by root, Sat Feb 9 00:34:11 2008 UTC