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

Comparing libev/ev.c (file contents):
Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC vs.
Revision 1.212 by root, Tue Feb 19 19:01:13 2008 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
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
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	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
		470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
		472	{
		473	int ncur = cur + 1;
		474
		475	do
		476	ncur <<= 1;
		477	while (cnt > ncur);
		478
		479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		480	if (elem * ncur > 4096)
		481	{
		482	ncur *= elem;
		483	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		484	ncur = ncur - sizeof (void ) 4;
		485	ncur /= elem;
		486	}
		487
		488	return ncur;
		489	}
		490
		491	static noinline void *
		492	array_realloc (int elem, void base, int cur, int cnt)
		493	{
		494	cur = array_nextsize (elem, cur, cnt);
		495	return ev_realloc (base, elem * *cur);
		496	}
402		497
403	#define array_needsize(type,base,cur,cnt,init) \	498	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	499	if (expect_false ((cnt) > (cur))) \
405	{ \	500	{ \
406	int newcnt = cur; \	501	int ocur_ = (cur); \
407	do \	502	(base) = (type *)array_realloc \
408	{ \	503	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	504	init ((base) + (ocur_), (cur) - ocur_); \
410	} \
411	while ((cnt) > newcnt); \
412	\
413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
414	init (base + cur, newcnt - cur); \
415	cur = newcnt; \
416	}	505	}
417		506
		507	#if 0
418	#define array_slim(type,stem) \	508	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	510	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	511	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	512	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	514	}
		515	#endif
425		516
426	#define array_free(stem, idx) \	517	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		519
429	/*****************************************************************************/	520	/*****************************************************************************/
430		521
431	void noinline	522	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	523	ev_feed_event (EV_P_ void *w, int revents)
433	{	524	{
434	W w_ = (W)w;	525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
435		527
436	if (expect_false (w_->pending))	528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events \|= revents;
		530	else
437	{	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_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	535	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	536	}
441
442	w_->pending = ++pendingcnt [ABSPRI (w_)];
443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446	}	537	}
447		538
448	void inline_size	539	void inline_speed
449	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	541	{
451	int i;	542	int i;
452		543
453	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
485	}	576	}
486		577
487	void	578	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
491	}	583	}
492		584
493	void inline_size	585	void inline_size
494	fd_reify (EV_P)	586	fd_reify (EV_P)
495	{	587	{
…		…
499	{	591	{
500	int fd = fdchanges [i];	592	int fd = fdchanges [i];
501	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
502	ev_io *w;	594	ev_io *w;
503		595
504	int events = 0;	596	unsigned char events = 0;
505		597
506	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)
507	events \|= w->events;	599	events \|= (unsigned char)w->events;
508		600
509	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
510	if (events)	602	if (events)
511	{	603	{
512	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
513	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
514	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));
515	}	611	}
516	#endif	612	#endif
517		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
518	anfd->reify = 0;	618	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	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	}
522	}	624	}
523		625
524	fdchangecnt = 0;	626	fdchangecnt = 0;
525	}	627	}
526		628
527	void inline_size	629	void inline_size
528	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
529	{	631	{
530	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	633	anfds [fd].reify \|= flags;
534		634
		635	if (expect_true (!reify))
		636	{
535	++fdchangecnt;	637	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
538	}	641	}
539		642
540	void inline_speed	643	void inline_speed
541	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
542	{	645	{
…		…
589	static void noinline	692	static void noinline
590	fd_rearm_all (EV_P)	693	fd_rearm_all (EV_P)
591	{	694	{
592	int fd;	695	int fd;
593		696
594	/* this should be highly optimised to not do anything but set a flag */
595	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
596	if (anfds [fd].events)	698	if (anfds [fd].events)
597	{	699	{
598	anfds [fd].events = 0;	700	anfds [fd].events = 0;
599	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
600	}	702	}
601	}	703	}
602		704
603	/*****************************************************************************/	705	/*****************************************************************************/
604		706
605	void inline_speed	707	void inline_speed
606	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
607	{	709	{
608	WT w = heap [k];	710	WT w = heap [k];
609		711
610	while (k && heap [k >> 1]->at > w->at)	712	while (k)
611	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
612	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
613	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
614	k >>= 1;	721	k = p;
615	}	722	}
616		723
617	heap [k] = w;	724	heap [k] = w;
618	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
619
620	}	726	}
621		727
622	void inline_speed	728	void inline_speed
623	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
624	{	730	{
625	WT w = heap [k];	731	WT w = heap [k];
626		732
627	while (k < (N >> 1))	733	for (;;)
628	{	734	{
629	int j = k << 1;	735	int c = (k << 1) + 1;
630		736
631	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
632	++j;
633
634	if (w->at <= heap [j]->at)
635	break;	738	break;
636		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
637	heap [k] = heap [j];	746	heap [k] = heap [c];
638	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
639	k = j;	749	k = c;
640	}	750	}
641		751
642	heap [k] = w;	752	heap [k] = w;
643	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
644	}	754	}
…		…
653	/*****************************************************************************/	763	/*****************************************************************************/
654		764
655	typedef struct	765	typedef struct
656	{	766	{
657	WL head;	767	WL head;
658	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
659	} ANSIG;	769	} ANSIG;
660		770
661	static ANSIG *signals;	771	static ANSIG *signals;
662	static int signalmax;	772	static int signalmax;
663		773
664	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
665	static sig_atomic_t volatile gotsig;
666	static ev_io sigev;
667		775
668	void inline_size	776	void inline_size
669	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
670	{	778	{
671	while (count--)	779	while (count--)
…		…
675		783
676	++base;	784	++base;
677	}	785	}
678	}	786	}
679		787
680	static void	788	/*****************************************************************************/
681	sighandler (int signum)
682	{
683	#if _WIN32
684	signal (signum, sighandler);
685	#endif
686		789
687	signals [signum - 1].gotsig = 1;
688
689	if (!gotsig)
690	{
691	int old_errno = errno;
692	gotsig = 1;
693	write (sigpipe [1], &signum, 1);
694	errno = old_errno;
695	}
696	}
697
698	void noinline
699	ev_feed_signal_event (EV_P_ int signum)
700	{
701	WL w;
702
703	#if EV_MULTIPLICITY
704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
705	#endif
706
707	--signum;
708
709	if (signum < 0 \|\| signum >= signalmax)
710	return;
711
712	signals [signum].gotsig = 0;
713
714	for (w = signals [signum].head; w; w = w->next)
715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
716	}
717
718	static void
719	sigcb (EV_P_ ev_io *iow, int revents)
720	{
721	int signum;
722
723	read (sigpipe [0], &revents, 1);
724	gotsig = 0;
725
726	for (signum = signalmax; signum--; )
727	if (signals [signum].gotsig)
728	ev_feed_signal_event (EV_A_ signum + 1);
729	}
730
731	void inline_size	790	void inline_speed
732	fd_intern (int fd)	791	fd_intern (int fd)
733	{	792	{
734	#ifdef _WIN32	793	#ifdef _WIN32
735	int arg = 1;	794	int arg = 1;
736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
739	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
740	#endif	799	#endif
741	}	800	}
742		801
743	static void noinline	802	static void noinline
744	siginit (EV_P)	803	evpipe_init (EV_P)
745	{	804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
746	fd_intern (sigpipe [0]);	810	fd_intern (evpipe [0]);
747	fd_intern (sigpipe [1]);	811	fd_intern (evpipe [1]);
748		812
749	ev_io_set (&sigev, sigpipe [0], EV_READ);	813	ev_io_set (&pipeev, evpipe [0], EV_READ);
750	ev_io_start (EV_A_ &sigev);	814	ev_io_start (EV_A_ &pipeev);
751	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 && ev_is_default_loop (EV_A))
		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
752	}	867	}
753		868
754	/*****************************************************************************/	869	/*****************************************************************************/
755		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
756	static ev_child *childs [EV_PID_HASHSIZE];	908	static WL childs [EV_PID_HASHSIZE];
757		909
758	#ifndef _WIN32	910	#ifndef _WIN32
759		911
760	static ev_signal childev;	912	static ev_signal childev;
		913
		914	#ifndef WIFCONTINUED
		915	# define WIFCONTINUED(status) 0
		916	#endif
761		917
762	void inline_speed	918	void inline_speed
763	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)
764	{	920	{
765	ev_child *w;	921	ev_child *w;
		922	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
766		923
767	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	{
768	if (w->pid == pid \|\| !w->pid)	926	if ((w->pid == pid \|\| !w->pid)
		927	&& (!traced \|\| (w->flags & 1)))
769	{	928	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	929	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	930	w->rpid = pid;
772	w->rstatus = status;	931	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	932	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	933	}
		934	}
775	}	935	}
776		936
777	#ifndef WCONTINUED	937	#ifndef WCONTINUED
778	# define WCONTINUED 0	938	# define WCONTINUED 0
779	#endif	939	#endif
…		…
876	}	1036	}
877		1037
878	unsigned int	1038	unsigned int
879	ev_embeddable_backends (void)	1039	ev_embeddable_backends (void)
880	{	1040	{
881	return EVBACKEND_EPOLL	1041	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
882	\| EVBACKEND_KQUEUE	1042
883	\| 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;
884	}	1048	}
885		1049
886	unsigned int	1050	unsigned int
887	ev_backend (EV_P)	1051	ev_backend (EV_P)
888	{	1052	{
889	return backend;	1053	return backend;
		1054	}
		1055
		1056	unsigned int
		1057	ev_loop_count (EV_P)
		1058	{
		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;
890	}	1072	}
891		1073
892	static void noinline	1074	static void noinline
893	loop_init (EV_P_ unsigned int flags)	1075	loop_init (EV_P_ unsigned int flags)
894	{	1076	{
…		…
900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1082	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
901	have_monotonic = 1;	1083	have_monotonic = 1;
902	}	1084	}
903	#endif	1085	#endif
904		1086
905	ev_rt_now = ev_time ();	1087	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	1088	mn_now = get_clock ();
907	now_floor = mn_now;	1089	now_floor = mn_now;
908	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
		1100
		1101	/* pid check not overridable via env */
		1102	#ifndef _WIN32
		1103	if (flags & EVFLAG_FORKCHECK)
		1104	curpid = getpid ();
		1105	#endif
909		1106
910	if (!(flags & EVFLAG_NOENV)	1107	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	1108	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	1109	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	1110	flags = atoi (getenv ("LIBEV_FLAGS"));
914		1111
915	if (!(flags & 0x0000ffffUL))	1112	if (!(flags & 0x0000ffffUL))
916	flags \|= ev_recommended_backends ();	1113	flags \|= ev_recommended_backends ();
917		1114
918	backend = 0;
919	backend_fd = -1;
920	#if EV_USE_INOTIFY
921	fs_fd = -2;
922	#endif
923
924	#if EV_USE_PORT	1115	#if EV_USE_PORT
925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1116	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
926	#endif	1117	#endif
927	#if EV_USE_KQUEUE	1118	#if EV_USE_KQUEUE
928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1119	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
935	#endif	1126	#endif
936	#if EV_USE_SELECT	1127	#if EV_USE_SELECT
937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1128	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
938	#endif	1129	#endif
939		1130
940	ev_init (&sigev, sigcb);	1131	ev_init (&pipeev, pipecb);
941	ev_set_priority (&sigev, EV_MAXPRI);	1132	ev_set_priority (&pipeev, EV_MAXPRI);
942	}	1133	}
943	}	1134	}
944		1135
945	static void noinline	1136	static void noinline
946	loop_destroy (EV_P)	1137	loop_destroy (EV_P)
947	{	1138	{
948	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	}
949		1149
950	#if EV_USE_INOTIFY	1150	#if EV_USE_INOTIFY
951	if (fs_fd >= 0)	1151	if (fs_fd >= 0)
952	close (fs_fd);	1152	close (fs_fd);
953	#endif	1153	#endif
…		…
970	#if EV_USE_SELECT	1170	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1171	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1172	#endif
973		1173
974	for (i = NUMPRI; i--; )	1174	for (i = NUMPRI; i--; )
		1175	{
975	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;
976		1183
977	/* have to use the microsoft-never-gets-it-right macro */	1184	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1185	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1186	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1187	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1188	array_free (periodic, EMPTY);
982	#endif	1189	#endif
		1190	#if EV_FORK_ENABLE
983	array_free (idle, EMPTY0);	1191	array_free (fork, EMPTY);
		1192	#endif
984	array_free (prepare, EMPTY0);	1193	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1194	array_free (check, EMPTY);
		1195	#if EV_ASYNC_ENABLE
		1196	array_free (async, EMPTY);
		1197	#endif
986		1198
987	backend = 0;	1199	backend = 0;
988	}	1200	}
989		1201
990	void inline_size infy_fork (EV_P);	1202	void inline_size infy_fork (EV_P);
…		…
1003	#endif	1215	#endif
1004	#if EV_USE_INOTIFY	1216	#if EV_USE_INOTIFY
1005	infy_fork (EV_A);	1217	infy_fork (EV_A);
1006	#endif	1218	#endif
1007		1219
1008	if (ev_is_active (&sigev))	1220	if (ev_is_active (&pipeev))
1009	{	1221	{
1010	/* default loop */	1222	/* this "locks" the handlers against writing to the pipe */
		1223	/* while we modify the fd vars */
		1224	gotsig = 1;
		1225	#if EV_ASYNC_ENABLE
		1226	gotasync = 1;
		1227	#endif
1011		1228
1012	ev_ref (EV_A);	1229	ev_ref (EV_A);
1013	ev_io_stop (EV_A_ &sigev);	1230	ev_io_stop (EV_A_ &pipeev);
1014	close (sigpipe [0]);	1231	close (evpipe [0]);
1015	close (sigpipe [1]);	1232	close (evpipe [1]);
1016		1233
1017	while (pipe (sigpipe))
1018	syserr ("(libev) error creating pipe");
1019
1020	siginit (EV_A);	1234	evpipe_init (EV_A);
		1235	/* now iterate over everything, in case we missed something */
		1236	pipecb (EV_A_ &pipeev, EV_READ);
1021	}	1237	}
1022		1238
1023	postfork = 0;	1239	postfork = 0;
1024	}	1240	}
1025		1241
…		…
1047	}	1263	}
1048		1264
1049	void	1265	void
1050	ev_loop_fork (EV_P)	1266	ev_loop_fork (EV_P)
1051	{	1267	{
1052	postfork = 1;	1268	postfork = 1; /* must be in line with ev_default_fork */
1053	}	1269	}
1054		1270
1055	#endif	1271	#endif
1056		1272
1057	#if EV_MULTIPLICITY	1273	#if EV_MULTIPLICITY
…		…
1060	#else	1276	#else
1061	int	1277	int
1062	ev_default_loop (unsigned int flags)	1278	ev_default_loop (unsigned int flags)
1063	#endif	1279	#endif
1064	{	1280	{
1065	if (sigpipe [0] == sigpipe [1])
1066	if (pipe (sigpipe))
1067	return 0;
1068
1069	if (!ev_default_loop_ptr)	1281	if (!ev_default_loop_ptr)
1070	{	1282	{
1071	#if EV_MULTIPLICITY	1283	#if EV_MULTIPLICITY
1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1284	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1073	#else	1285	#else
…		…
1076		1288
1077	loop_init (EV_A_ flags);	1289	loop_init (EV_A_ flags);
1078		1290
1079	if (ev_backend (EV_A))	1291	if (ev_backend (EV_A))
1080	{	1292	{
1081	siginit (EV_A);
1082
1083	#ifndef _WIN32	1293	#ifndef _WIN32
1084	ev_signal_init (&childev, childcb, SIGCHLD);	1294	ev_signal_init (&childev, childcb, SIGCHLD);
1085	ev_set_priority (&childev, EV_MAXPRI);	1295	ev_set_priority (&childev, EV_MAXPRI);
1086	ev_signal_start (EV_A_ &childev);	1296	ev_signal_start (EV_A_ &childev);
1087	ev_unref (EV_A); /* child watcher should not keep loop alive */	1297	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1104	#ifndef _WIN32	1314	#ifndef _WIN32
1105	ev_ref (EV_A); /* child watcher */	1315	ev_ref (EV_A); /* child watcher */
1106	ev_signal_stop (EV_A_ &childev);	1316	ev_signal_stop (EV_A_ &childev);
1107	#endif	1317	#endif
1108		1318
1109	ev_ref (EV_A); /* signal watcher */
1110	ev_io_stop (EV_A_ &sigev);
1111
1112	close (sigpipe [0]); sigpipe [0] = 0;
1113	close (sigpipe [1]); sigpipe [1] = 0;
1114
1115	loop_destroy (EV_A);	1319	loop_destroy (EV_A);
1116	}	1320	}
1117		1321
1118	void	1322	void
1119	ev_default_fork (void)	1323	ev_default_fork (void)
…		…
1121	#if EV_MULTIPLICITY	1325	#if EV_MULTIPLICITY
1122	struct ev_loop *loop = ev_default_loop_ptr;	1326	struct ev_loop *loop = ev_default_loop_ptr;
1123	#endif	1327	#endif
1124		1328
1125	if (backend)	1329	if (backend)
1126	postfork = 1;	1330	postfork = 1; /* must be in line with ev_loop_fork */
1127	}	1331	}
1128		1332
1129	/*****************************************************************************/	1333	/*****************************************************************************/
1130		1334
1131	int inline_size	1335	void
1132	any_pending (EV_P)	1336	ev_invoke (EV_P_ void *w, int revents)
1133	{	1337	{
1134	int pri;	1338	EV_CB_INVOKE ((W)w, revents);
1135
1136	for (pri = NUMPRI; pri--; )
1137	if (pendingcnt [pri])
1138	return 1;
1139
1140	return 0;
1141	}	1339	}
1142		1340
1143	void inline_speed	1341	void inline_speed
1144	call_pending (EV_P)	1342	call_pending (EV_P)
1145	{	1343	{
…		…
1163	void inline_size	1361	void inline_size
1164	timers_reify (EV_P)	1362	timers_reify (EV_P)
1165	{	1363	{
1166	while (timercnt && ((WT)timers [0])->at <= mn_now)	1364	while (timercnt && ((WT)timers [0])->at <= mn_now)
1167	{	1365	{
1168	ev_timer *w = timers [0];	1366	ev_timer w = (ev_timer )timers [0];
1169		1367
1170	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1368	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1171		1369
1172	/* first reschedule or stop timer */	1370	/* first reschedule or stop timer */
1173	if (w->repeat)	1371	if (w->repeat)
…		…
1176		1374
1177	((WT)w)->at += w->repeat;	1375	((WT)w)->at += w->repeat;
1178	if (((WT)w)->at < mn_now)	1376	if (((WT)w)->at < mn_now)
1179	((WT)w)->at = mn_now;	1377	((WT)w)->at = mn_now;
1180		1378
1181	downheap ((WT *)timers, timercnt, 0);	1379	downheap (timers, timercnt, 0);
1182	}	1380	}
1183	else	1381	else
1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1382	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1185		1383
1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1384	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1191	void inline_size	1389	void inline_size
1192	periodics_reify (EV_P)	1390	periodics_reify (EV_P)
1193	{	1391	{
1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1392	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1195	{	1393	{
1196	ev_periodic *w = periodics [0];	1394	ev_periodic w = (ev_periodic )periodics [0];
1197		1395
1198	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1396	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1199		1397
1200	/* first reschedule or stop timer */	1398	/* first reschedule or stop timer */
1201	if (w->reschedule_cb)	1399	if (w->reschedule_cb)
1202	{	1400	{
1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1401	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1402	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1205	downheap ((WT *)periodics, periodiccnt, 0);	1403	downheap (periodics, periodiccnt, 0);
1206	}	1404	}
1207	else if (w->interval)	1405	else if (w->interval)
1208	{	1406	{
1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1407	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1408	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1210	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1409	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1211	downheap ((WT *)periodics, periodiccnt, 0);	1410	downheap (periodics, periodiccnt, 0);
1212	}	1411	}
1213	else	1412	else
1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1413	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1215		1414
1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1415	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1223	int i;	1422	int i;
1224		1423
1225	/* adjust periodics after time jump */	1424	/* adjust periodics after time jump */
1226	for (i = 0; i < periodiccnt; ++i)	1425	for (i = 0; i < periodiccnt; ++i)
1227	{	1426	{
1228	ev_periodic *w = periodics [i];	1427	ev_periodic w = (ev_periodic )periodics [i];
1229		1428
1230	if (w->reschedule_cb)	1429	if (w->reschedule_cb)
1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1430	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1232	else if (w->interval)	1431	else if (w->interval)
1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1432	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1234	}	1433	}
1235		1434
1236	/* now rebuild the heap */	1435	/* now rebuild the heap */
1237	for (i = periodiccnt >> 1; i--; )	1436	for (i = periodiccnt >> 1; i--; )
1238	downheap ((WT *)periodics, periodiccnt, i);	1437	downheap (periodics, periodiccnt, i);
1239	}	1438	}
1240	#endif	1439	#endif
1241		1440
		1441	#if EV_IDLE_ENABLE
1242	int inline_size	1442	void inline_size
1243	time_update_monotonic (EV_P)	1443	idle_reify (EV_P)
1244	{	1444	{
		1445	if (expect_false (idleall))
		1446	{
		1447	int pri;
		1448
		1449	for (pri = NUMPRI; pri--; )
		1450	{
		1451	if (pendingcnt [pri])
		1452	break;
		1453
		1454	if (idlecnt [pri])
		1455	{
		1456	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1457	break;
		1458	}
		1459	}
		1460	}
		1461	}
		1462	#endif
		1463
		1464	void inline_speed
		1465	time_update (EV_P_ ev_tstamp max_block)
		1466	{
		1467	int i;
		1468
		1469	#if EV_USE_MONOTONIC
		1470	if (expect_true (have_monotonic))
		1471	{
		1472	ev_tstamp odiff = rtmn_diff;
		1473
1245	mn_now = get_clock ();	1474	mn_now = get_clock ();
1246		1475
		1476	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1477	/* interpolate in the meantime */
1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1478	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1248	{	1479	{
1249	ev_rt_now = rtmn_diff + mn_now;	1480	ev_rt_now = rtmn_diff + mn_now;
1250	return 0;	1481	return;
1251	}	1482	}
1252	else	1483
1253	{
1254	now_floor = mn_now;	1484	now_floor = mn_now;
1255	ev_rt_now = ev_time ();	1485	ev_rt_now = ev_time ();
1256	return 1;
1257	}
1258	}
1259		1486
1260	void inline_size	1487	/* loop a few times, before making important decisions.
1261	time_update (EV_P)	1488	* on the choice of "4": one iteration isn't enough,
1262	{	1489	* in case we get preempted during the calls to
1263	int i;	1490	* ev_time and get_clock. a second call is almost guaranteed
1264		1491	* to succeed in that case, though. and looping a few more times
1265	#if EV_USE_MONOTONIC	1492	* doesn't hurt either as we only do this on time-jumps or
1266	if (expect_true (have_monotonic))	1493	* in the unlikely event of having been preempted here.
1267	{	1494	*/
1268	if (time_update_monotonic (EV_A))	1495	for (i = 4; --i; )
1269	{	1496	{
1270	ev_tstamp odiff = rtmn_diff;
1271
1272	/* loop a few times, before making important decisions.
1273	* on the choice of "4": one iteration isn't enough,
1274	* in case we get preempted during the calls to
1275	* ev_time and get_clock. a second call is almost guarenteed
1276	* to succeed in that case, though. and looping a few more times
1277	* doesn't hurt either as we only do this on time-jumps or
1278	* in the unlikely event of getting preempted here.
1279	*/
1280	for (i = 4; --i; )
1281	{
1282	rtmn_diff = ev_rt_now - mn_now;	1497	rtmn_diff = ev_rt_now - mn_now;
1283		1498
1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1499	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1285	return; /* all is well */	1500	return; /* all is well */
1286		1501
1287	ev_rt_now = ev_time ();	1502	ev_rt_now = ev_time ();
1288	mn_now = get_clock ();	1503	mn_now = get_clock ();
1289	now_floor = mn_now;	1504	now_floor = mn_now;
1290	}	1505	}
1291		1506
1292	# if EV_PERIODIC_ENABLE	1507	# if EV_PERIODIC_ENABLE
1293	periodics_reschedule (EV_A);	1508	periodics_reschedule (EV_A);
1294	# endif	1509	# endif
1295	/* no timer adjustment, as the monotonic clock doesn't jump */	1510	/* no timer adjustment, as the monotonic clock doesn't jump */
1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1511	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1297	}
1298	}	1512	}
1299	else	1513	else
1300	#endif	1514	#endif
1301	{	1515	{
1302	ev_rt_now = ev_time ();	1516	ev_rt_now = ev_time ();
1303		1517
1304	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1518	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1305	{	1519	{
1306	#if EV_PERIODIC_ENABLE	1520	#if EV_PERIODIC_ENABLE
1307	periodics_reschedule (EV_A);	1521	periodics_reschedule (EV_A);
1308	#endif	1522	#endif
1309
1310	/* adjust timers. this is easy, as the offset is the same for all */	1523	/* adjust timers. this is easy, as the offset is the same for all of them */
1311	for (i = 0; i < timercnt; ++i)	1524	for (i = 0; i < timercnt; ++i)
1312	((WT)timers [i])->at += ev_rt_now - mn_now;	1525	((WT)timers [i])->at += ev_rt_now - mn_now;
1313	}	1526	}
1314		1527
1315	mn_now = ev_rt_now;	1528	mn_now = ev_rt_now;
…		…
1335	{	1548	{
1336	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1549	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1337	? EVUNLOOP_ONE	1550	? EVUNLOOP_ONE
1338	: EVUNLOOP_CANCEL;	1551	: EVUNLOOP_CANCEL;
1339		1552
1340	while (activecnt)	1553	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1554
		1555	do
1341	{	1556	{
1342	/* we might have forked, so reify kernel state if necessary */	1557	#ifndef _WIN32
		1558	if (expect_false (curpid)) /* penalise the forking check even more */
		1559	if (expect_false (getpid () != curpid))
		1560	{
		1561	curpid = getpid ();
		1562	postfork = 1;
		1563	}
		1564	#endif
		1565
1343	#if EV_FORK_ENABLE	1566	#if EV_FORK_ENABLE
		1567	/* we might have forked, so queue fork handlers */
1344	if (expect_false (postfork))	1568	if (expect_false (postfork))
1345	if (forkcnt)	1569	if (forkcnt)
1346	{	1570	{
1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1571	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1348	call_pending (EV_A);	1572	call_pending (EV_A);
1349	}	1573	}
1350	#endif	1574	#endif
1351		1575
1352	/* queue check watchers (and execute them) */	1576	/* queue prepare watchers (and execute them) */
1353	if (expect_false (preparecnt))	1577	if (expect_false (preparecnt))
1354	{	1578	{
1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1579	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1356	call_pending (EV_A);	1580	call_pending (EV_A);
1357	}	1581	}
1358		1582
		1583	if (expect_false (!activecnt))
		1584	break;
		1585
1359	/* we might have forked, so reify kernel state if necessary */	1586	/* we might have forked, so reify kernel state if necessary */
1360	if (expect_false (postfork))	1587	if (expect_false (postfork))
1361	loop_fork (EV_A);	1588	loop_fork (EV_A);
1362		1589
1363	/* update fd-related kernel structures */	1590	/* update fd-related kernel structures */
1364	fd_reify (EV_A);	1591	fd_reify (EV_A);
1365		1592
1366	/* calculate blocking time */	1593	/* calculate blocking time */
1367	{	1594	{
1368	double block;	1595	ev_tstamp waittime = 0.;
		1596	ev_tstamp sleeptime = 0.;
1369		1597
1370	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1598	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1371	block = 0.; /* do not block at all */
1372	else
1373	{	1599	{
1374	/* update time to cancel out callback processing overhead */	1600	/* update time to cancel out callback processing overhead */
1375	#if EV_USE_MONOTONIC
1376	if (expect_true (have_monotonic))
1377	time_update_monotonic (EV_A);	1601	time_update (EV_A_ 1e100);
1378	else
1379	#endif
1380	{
1381	ev_rt_now = ev_time ();
1382	mn_now = ev_rt_now;
1383	}
1384		1602
1385	block = MAX_BLOCKTIME;	1603	waittime = MAX_BLOCKTIME;
1386		1604
1387	if (timercnt)	1605	if (timercnt)
1388	{	1606	{
1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1607	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1390	if (block > to) block = to;	1608	if (waittime > to) waittime = to;
1391	}	1609	}
1392		1610
1393	#if EV_PERIODIC_ENABLE	1611	#if EV_PERIODIC_ENABLE
1394	if (periodiccnt)	1612	if (periodiccnt)
1395	{	1613	{
1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1614	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1397	if (block > to) block = to;	1615	if (waittime > to) waittime = to;
1398	}	1616	}
1399	#endif	1617	#endif
1400		1618
1401	if (expect_false (block < 0.)) block = 0.;	1619	if (expect_false (waittime < timeout_blocktime))
		1620	waittime = timeout_blocktime;
		1621
		1622	sleeptime = waittime - backend_fudge;
		1623
		1624	if (expect_true (sleeptime > io_blocktime))
		1625	sleeptime = io_blocktime;
		1626
		1627	if (sleeptime)
		1628	{
		1629	ev_sleep (sleeptime);
		1630	waittime -= sleeptime;
		1631	}
1402	}	1632	}
1403		1633
		1634	++loop_count;
1404	backend_poll (EV_A_ block);	1635	backend_poll (EV_A_ waittime);
		1636
		1637	/* update ev_rt_now, do magic */
		1638	time_update (EV_A_ waittime + sleeptime);
1405	}	1639	}
1406
1407	/* update ev_rt_now, do magic */
1408	time_update (EV_A);
1409		1640
1410	/* queue pending timers and reschedule them */	1641	/* queue pending timers and reschedule them */
1411	timers_reify (EV_A); /* relative timers called last */	1642	timers_reify (EV_A); /* relative timers called last */
1412	#if EV_PERIODIC_ENABLE	1643	#if EV_PERIODIC_ENABLE
1413	periodics_reify (EV_A); /* absolute timers called first */	1644	periodics_reify (EV_A); /* absolute timers called first */
1414	#endif	1645	#endif
1415		1646
		1647	#if EV_IDLE_ENABLE
1416	/* queue idle watchers unless other events are pending */	1648	/* queue idle watchers unless other events are pending */
1417	if (idlecnt && !any_pending (EV_A))	1649	idle_reify (EV_A);
1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1650	#endif
1419		1651
1420	/* queue check watchers, to be executed first */	1652	/* queue check watchers, to be executed first */
1421	if (expect_false (checkcnt))	1653	if (expect_false (checkcnt))
1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1654	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1423		1655
1424	call_pending (EV_A);	1656	call_pending (EV_A);
1425		1657
1426	if (expect_false (loop_done))
1427	break;
1428	}	1658	}
		1659	while (expect_true (activecnt && !loop_done));
1429		1660
1430	if (loop_done == EVUNLOOP_ONE)	1661	if (loop_done == EVUNLOOP_ONE)
1431	loop_done = EVUNLOOP_CANCEL;	1662	loop_done = EVUNLOOP_CANCEL;
1432	}	1663	}
1433		1664
…		…
1460	head = &(*head)->next;	1691	head = &(*head)->next;
1461	}	1692	}
1462	}	1693	}
1463		1694
1464	void inline_speed	1695	void inline_speed
1465	ev_clear_pending (EV_P_ W w)	1696	clear_pending (EV_P_ W w)
1466	{	1697	{
1467	if (w->pending)	1698	if (w->pending)
1468	{	1699	{
1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1700	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1470	w->pending = 0;	1701	w->pending = 0;
1471	}	1702	}
1472	}	1703	}
1473		1704
		1705	int
		1706	ev_clear_pending (EV_P_ void *w)
		1707	{
		1708	W w_ = (W)w;
		1709	int pending = w_->pending;
		1710
		1711	if (expect_true (pending))
		1712	{
		1713	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1714	w_->pending = 0;
		1715	p->w = 0;
		1716	return p->events;
		1717	}
		1718	else
		1719	return 0;
		1720	}
		1721
		1722	void inline_size
		1723	pri_adjust (EV_P_ W w)
		1724	{
		1725	int pri = w->priority;
		1726	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1727	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1728	w->priority = pri;
		1729	}
		1730
1474	void inline_speed	1731	void inline_speed
1475	ev_start (EV_P_ W w, int active)	1732	ev_start (EV_P_ W w, int active)
1476	{	1733	{
1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1734	pri_adjust (EV_A_ w);
1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1479
1480	w->active = active;	1735	w->active = active;
1481	ev_ref (EV_A);	1736	ev_ref (EV_A);
1482	}	1737	}
1483		1738
1484	void inline_size	1739	void inline_size
…		…
1488	w->active = 0;	1743	w->active = 0;
1489	}	1744	}
1490		1745
1491	/*****************************************************************************/	1746	/*****************************************************************************/
1492		1747
1493	void	1748	void noinline
1494	ev_io_start (EV_P_ ev_io *w)	1749	ev_io_start (EV_P_ ev_io *w)
1495	{	1750	{
1496	int fd = w->fd;	1751	int fd = w->fd;
1497		1752
1498	if (expect_false (ev_is_active (w)))	1753	if (expect_false (ev_is_active (w)))
…		…
1500		1755
1501	assert (("ev_io_start called with negative fd", fd >= 0));	1756	assert (("ev_io_start called with negative fd", fd >= 0));
1502		1757
1503	ev_start (EV_A_ (W)w, 1);	1758	ev_start (EV_A_ (W)w, 1);
1504	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1759	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1505	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1760	wlist_add (&anfds[fd].head, (WL)w);
1506		1761
1507	fd_change (EV_A_ fd);	1762	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1763	w->events &= ~EV_IOFDSET;
1508	}	1764	}
1509		1765
1510	void	1766	void noinline
1511	ev_io_stop (EV_P_ ev_io *w)	1767	ev_io_stop (EV_P_ ev_io *w)
1512	{	1768	{
1513	ev_clear_pending (EV_A_ (W)w);	1769	clear_pending (EV_A_ (W)w);
1514	if (expect_false (!ev_is_active (w)))	1770	if (expect_false (!ev_is_active (w)))
1515	return;	1771	return;
1516		1772
1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1773	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1518		1774
1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1775	wlist_del (&anfds[w->fd].head, (WL)w);
1520	ev_stop (EV_A_ (W)w);	1776	ev_stop (EV_A_ (W)w);
1521		1777
1522	fd_change (EV_A_ w->fd);	1778	fd_change (EV_A_ w->fd, 1);
1523	}	1779	}
1524		1780
1525	void	1781	void noinline
1526	ev_timer_start (EV_P_ ev_timer *w)	1782	ev_timer_start (EV_P_ ev_timer *w)
1527	{	1783	{
1528	if (expect_false (ev_is_active (w)))	1784	if (expect_false (ev_is_active (w)))
1529	return;	1785	return;
1530		1786
1531	((WT)w)->at += mn_now;	1787	((WT)w)->at += mn_now;
1532		1788
1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1789	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1534		1790
1535	ev_start (EV_A_ (W)w, ++timercnt);	1791	ev_start (EV_A_ (W)w, ++timercnt);
1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1792	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1537	timers [timercnt - 1] = w;	1793	timers [timercnt - 1] = (WT)w;
1538	upheap ((WT *)timers, timercnt - 1);	1794	upheap (timers, timercnt - 1);
1539		1795
1540	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1796	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1541	}	1797	}
1542		1798
1543	void	1799	void noinline
1544	ev_timer_stop (EV_P_ ev_timer *w)	1800	ev_timer_stop (EV_P_ ev_timer *w)
1545	{	1801	{
1546	ev_clear_pending (EV_A_ (W)w);	1802	clear_pending (EV_A_ (W)w);
1547	if (expect_false (!ev_is_active (w)))	1803	if (expect_false (!ev_is_active (w)))
1548	return;	1804	return;
1549		1805
1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1806	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1551		1807
1552	{	1808	{
1553	int active = ((W)w)->active;	1809	int active = ((W)w)->active;
1554		1810
1555	if (expect_true (--active < --timercnt))	1811	if (expect_true (--active < --timercnt))
1556	{	1812	{
1557	timers [active] = timers [timercnt];	1813	timers [active] = timers [timercnt];
1558	adjustheap ((WT *)timers, timercnt, active);	1814	adjustheap (timers, timercnt, active);
1559	}	1815	}
1560	}	1816	}
1561		1817
1562	((WT)w)->at -= mn_now;	1818	((WT)w)->at -= mn_now;
1563		1819
1564	ev_stop (EV_A_ (W)w);	1820	ev_stop (EV_A_ (W)w);
1565	}	1821	}
1566		1822
1567	void	1823	void noinline
1568	ev_timer_again (EV_P_ ev_timer *w)	1824	ev_timer_again (EV_P_ ev_timer *w)
1569	{	1825	{
1570	if (ev_is_active (w))	1826	if (ev_is_active (w))
1571	{	1827	{
1572	if (w->repeat)	1828	if (w->repeat)
1573	{	1829	{
1574	((WT)w)->at = mn_now + w->repeat;	1830	((WT)w)->at = mn_now + w->repeat;
1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1831	adjustheap (timers, timercnt, ((W)w)->active - 1);
1576	}	1832	}
1577	else	1833	else
1578	ev_timer_stop (EV_A_ w);	1834	ev_timer_stop (EV_A_ w);
1579	}	1835	}
1580	else if (w->repeat)	1836	else if (w->repeat)
…		…
1583	ev_timer_start (EV_A_ w);	1839	ev_timer_start (EV_A_ w);
1584	}	1840	}
1585	}	1841	}
1586		1842
1587	#if EV_PERIODIC_ENABLE	1843	#if EV_PERIODIC_ENABLE
1588	void	1844	void noinline
1589	ev_periodic_start (EV_P_ ev_periodic *w)	1845	ev_periodic_start (EV_P_ ev_periodic *w)
1590	{	1846	{
1591	if (expect_false (ev_is_active (w)))	1847	if (expect_false (ev_is_active (w)))
1592	return;	1848	return;
1593		1849
…		…
1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1851	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1596	else if (w->interval)	1852	else if (w->interval)
1597	{	1853	{
1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1854	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1599	/* this formula differs from the one in periodic_reify because we do not always round up */	1855	/* this formula differs from the one in periodic_reify because we do not always round up */
1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1856	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1601	}	1857	}
		1858	else
		1859	((WT)w)->at = w->offset;
1602		1860
1603	ev_start (EV_A_ (W)w, ++periodiccnt);	1861	ev_start (EV_A_ (W)w, ++periodiccnt);
1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1862	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1605	periodics [periodiccnt - 1] = w;	1863	periodics [periodiccnt - 1] = (WT)w;
1606	upheap ((WT *)periodics, periodiccnt - 1);	1864	upheap (periodics, periodiccnt - 1);
1607		1865
1608	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1866	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1609	}	1867	}
1610		1868
1611	void	1869	void noinline
1612	ev_periodic_stop (EV_P_ ev_periodic *w)	1870	ev_periodic_stop (EV_P_ ev_periodic *w)
1613	{	1871	{
1614	ev_clear_pending (EV_A_ (W)w);	1872	clear_pending (EV_A_ (W)w);
1615	if (expect_false (!ev_is_active (w)))	1873	if (expect_false (!ev_is_active (w)))
1616	return;	1874	return;
1617		1875
1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1876	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1619		1877
1620	{	1878	{
1621	int active = ((W)w)->active;	1879	int active = ((W)w)->active;
1622		1880
1623	if (expect_true (--active < --periodiccnt))	1881	if (expect_true (--active < --periodiccnt))
1624	{	1882	{
1625	periodics [active] = periodics [periodiccnt];	1883	periodics [active] = periodics [periodiccnt];
1626	adjustheap ((WT *)periodics, periodiccnt, active);	1884	adjustheap (periodics, periodiccnt, active);
1627	}	1885	}
1628	}	1886	}
1629		1887
1630	ev_stop (EV_A_ (W)w);	1888	ev_stop (EV_A_ (W)w);
1631	}	1889	}
1632		1890
1633	void	1891	void noinline
1634	ev_periodic_again (EV_P_ ev_periodic *w)	1892	ev_periodic_again (EV_P_ ev_periodic *w)
1635	{	1893	{
1636	/* TODO: use adjustheap and recalculation */	1894	/* TODO: use adjustheap and recalculation */
1637	ev_periodic_stop (EV_A_ w);	1895	ev_periodic_stop (EV_A_ w);
1638	ev_periodic_start (EV_A_ w);	1896	ev_periodic_start (EV_A_ w);
…		…
1641		1899
1642	#ifndef SA_RESTART	1900	#ifndef SA_RESTART
1643	# define SA_RESTART 0	1901	# define SA_RESTART 0
1644	#endif	1902	#endif
1645		1903
1646	void	1904	void noinline
1647	ev_signal_start (EV_P_ ev_signal *w)	1905	ev_signal_start (EV_P_ ev_signal *w)
1648	{	1906	{
1649	#if EV_MULTIPLICITY	1907	#if EV_MULTIPLICITY
1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1908	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1651	#endif	1909	#endif
1652	if (expect_false (ev_is_active (w)))	1910	if (expect_false (ev_is_active (w)))
1653	return;	1911	return;
1654		1912
1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1913	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1656		1914
		1915	evpipe_init (EV_A);
		1916
		1917	{
		1918	#ifndef _WIN32
		1919	sigset_t full, prev;
		1920	sigfillset (&full);
		1921	sigprocmask (SIG_SETMASK, &full, &prev);
		1922	#endif
		1923
		1924	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1925
		1926	#ifndef _WIN32
		1927	sigprocmask (SIG_SETMASK, &prev, 0);
		1928	#endif
		1929	}
		1930
1657	ev_start (EV_A_ (W)w, 1);	1931	ev_start (EV_A_ (W)w, 1);
1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1932	wlist_add (&signals [w->signum - 1].head, (WL)w);
1660		1933
1661	if (!((WL)w)->next)	1934	if (!((WL)w)->next)
1662	{	1935	{
1663	#if _WIN32	1936	#if _WIN32
1664	signal (w->signum, sighandler);	1937	signal (w->signum, sighandler);
…		…
1670	sigaction (w->signum, &sa, 0);	1943	sigaction (w->signum, &sa, 0);
1671	#endif	1944	#endif
1672	}	1945	}
1673	}	1946	}
1674		1947
1675	void	1948	void noinline
1676	ev_signal_stop (EV_P_ ev_signal *w)	1949	ev_signal_stop (EV_P_ ev_signal *w)
1677	{	1950	{
1678	ev_clear_pending (EV_A_ (W)w);	1951	clear_pending (EV_A_ (W)w);
1679	if (expect_false (!ev_is_active (w)))	1952	if (expect_false (!ev_is_active (w)))
1680	return;	1953	return;
1681		1954
1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1955	wlist_del (&signals [w->signum - 1].head, (WL)w);
1683	ev_stop (EV_A_ (W)w);	1956	ev_stop (EV_A_ (W)w);
1684		1957
1685	if (!signals [w->signum - 1].head)	1958	if (!signals [w->signum - 1].head)
1686	signal (w->signum, SIG_DFL);	1959	signal (w->signum, SIG_DFL);
1687	}	1960	}
…		…
1694	#endif	1967	#endif
1695	if (expect_false (ev_is_active (w)))	1968	if (expect_false (ev_is_active (w)))
1696	return;	1969	return;
1697		1970
1698	ev_start (EV_A_ (W)w, 1);	1971	ev_start (EV_A_ (W)w, 1);
1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1972	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1700	}	1973	}
1701		1974
1702	void	1975	void
1703	ev_child_stop (EV_P_ ev_child *w)	1976	ev_child_stop (EV_P_ ev_child *w)
1704	{	1977	{
1705	ev_clear_pending (EV_A_ (W)w);	1978	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	1979	if (expect_false (!ev_is_active (w)))
1707	return;	1980	return;
1708		1981
1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1982	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1710	ev_stop (EV_A_ (W)w);	1983	ev_stop (EV_A_ (W)w);
1711	}	1984	}
1712		1985
1713	#if EV_STAT_ENABLE	1986	#if EV_STAT_ENABLE
1714		1987
…		…
1718	# endif	1991	# endif
1719		1992
1720	#define DEF_STAT_INTERVAL 5.0074891	1993	#define DEF_STAT_INTERVAL 5.0074891
1721	#define MIN_STAT_INTERVAL 0.1074891	1994	#define MIN_STAT_INTERVAL 0.1074891
1722		1995
1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1996	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1724		1997
1725	#if EV_USE_INOTIFY	1998	#if EV_USE_INOTIFY
1726	# define EV_INOTIFY_BUFSIZE 8192	1999	# define EV_INOTIFY_BUFSIZE 8192
1727		2000
1728	static void noinline	2001	static void noinline
…		…
1879	w->attr.st_nlink = 0;	2152	w->attr.st_nlink = 0;
1880	else if (!w->attr.st_nlink)	2153	else if (!w->attr.st_nlink)
1881	w->attr.st_nlink = 1;	2154	w->attr.st_nlink = 1;
1882	}	2155	}
1883		2156
1884	void noinline	2157	static void noinline
1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2158	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1886	{	2159	{
1887	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2160	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1888		2161
1889	/* we copy this here each the time so that */	2162	/* we copy this here each the time so that */
…		…
1946	}	2219	}
1947		2220
1948	void	2221	void
1949	ev_stat_stop (EV_P_ ev_stat *w)	2222	ev_stat_stop (EV_P_ ev_stat *w)
1950	{	2223	{
1951	ev_clear_pending (EV_A_ (W)w);	2224	clear_pending (EV_A_ (W)w);
1952	if (expect_false (!ev_is_active (w)))	2225	if (expect_false (!ev_is_active (w)))
1953	return;	2226	return;
1954		2227
1955	#if EV_USE_INOTIFY	2228	#if EV_USE_INOTIFY
1956	infy_del (EV_A_ w);	2229	infy_del (EV_A_ w);
…		…
1959		2232
1960	ev_stop (EV_A_ (W)w);	2233	ev_stop (EV_A_ (W)w);
1961	}	2234	}
1962	#endif	2235	#endif
1963		2236
		2237	#if EV_IDLE_ENABLE
1964	void	2238	void
1965	ev_idle_start (EV_P_ ev_idle *w)	2239	ev_idle_start (EV_P_ ev_idle *w)
1966	{	2240	{
1967	if (expect_false (ev_is_active (w)))	2241	if (expect_false (ev_is_active (w)))
1968	return;	2242	return;
1969		2243
		2244	pri_adjust (EV_A_ (W)w);
		2245
		2246	{
		2247	int active = ++idlecnt [ABSPRI (w)];
		2248
		2249	++idleall;
1970	ev_start (EV_A_ (W)w, ++idlecnt);	2250	ev_start (EV_A_ (W)w, active);
		2251
1971	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2252	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1972	idles [idlecnt - 1] = w;	2253	idles [ABSPRI (w)][active - 1] = w;
		2254	}
1973	}	2255	}
1974		2256
1975	void	2257	void
1976	ev_idle_stop (EV_P_ ev_idle *w)	2258	ev_idle_stop (EV_P_ ev_idle *w)
1977	{	2259	{
1978	ev_clear_pending (EV_A_ (W)w);	2260	clear_pending (EV_A_ (W)w);
1979	if (expect_false (!ev_is_active (w)))	2261	if (expect_false (!ev_is_active (w)))
1980	return;	2262	return;
1981		2263
1982	{	2264	{
1983	int active = ((W)w)->active;	2265	int active = ((W)w)->active;
1984	idles [active - 1] = idles [--idlecnt];	2266
		2267	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1985	((W)idles [active - 1])->active = active;	2268	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2269
		2270	ev_stop (EV_A_ (W)w);
		2271	--idleall;
1986	}	2272	}
1987
1988	ev_stop (EV_A_ (W)w);
1989	}	2273	}
		2274	#endif
1990		2275
1991	void	2276	void
1992	ev_prepare_start (EV_P_ ev_prepare *w)	2277	ev_prepare_start (EV_P_ ev_prepare *w)
1993	{	2278	{
1994	if (expect_false (ev_is_active (w)))	2279	if (expect_false (ev_is_active (w)))
…		…
2000	}	2285	}
2001		2286
2002	void	2287	void
2003	ev_prepare_stop (EV_P_ ev_prepare *w)	2288	ev_prepare_stop (EV_P_ ev_prepare *w)
2004	{	2289	{
2005	ev_clear_pending (EV_A_ (W)w);	2290	clear_pending (EV_A_ (W)w);
2006	if (expect_false (!ev_is_active (w)))	2291	if (expect_false (!ev_is_active (w)))
2007	return;	2292	return;
2008		2293
2009	{	2294	{
2010	int active = ((W)w)->active;	2295	int active = ((W)w)->active;
…		…
2027	}	2312	}
2028		2313
2029	void	2314	void
2030	ev_check_stop (EV_P_ ev_check *w)	2315	ev_check_stop (EV_P_ ev_check *w)
2031	{	2316	{
2032	ev_clear_pending (EV_A_ (W)w);	2317	clear_pending (EV_A_ (W)w);
2033	if (expect_false (!ev_is_active (w)))	2318	if (expect_false (!ev_is_active (w)))
2034	return;	2319	return;
2035		2320
2036	{	2321	{
2037	int active = ((W)w)->active;	2322	int active = ((W)w)->active;
…		…
2044		2329
2045	#if EV_EMBED_ENABLE	2330	#if EV_EMBED_ENABLE
2046	void noinline	2331	void noinline
2047	ev_embed_sweep (EV_P_ ev_embed *w)	2332	ev_embed_sweep (EV_P_ ev_embed *w)
2048	{	2333	{
2049	ev_loop (w->loop, EVLOOP_NONBLOCK);	2334	ev_loop (w->other, EVLOOP_NONBLOCK);
2050	}	2335	}
2051		2336
2052	static void	2337	static void
2053	embed_cb (EV_P_ ev_io *io, int revents)	2338	embed_io_cb (EV_P_ ev_io *io, int revents)
2054	{	2339	{
2055	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2340	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2056		2341
2057	if (ev_cb (w))	2342	if (ev_cb (w))
2058	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2343	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2059	else	2344	else
2060	ev_embed_sweep (loop, w);	2345	ev_loop (w->other, EVLOOP_NONBLOCK);
2061	}	2346	}
		2347
		2348	static void
		2349	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2350	{
		2351	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2352
		2353	{
		2354	struct ev_loop *loop = w->other;
		2355
		2356	while (fdchangecnt)
		2357	{
		2358	fd_reify (EV_A);
		2359	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2360	}
		2361	}
		2362	}
		2363
		2364	#if 0
		2365	static void
		2366	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2367	{
		2368	ev_idle_stop (EV_A_ idle);
		2369	}
		2370	#endif
2062		2371
2063	void	2372	void
2064	ev_embed_start (EV_P_ ev_embed *w)	2373	ev_embed_start (EV_P_ ev_embed *w)
2065	{	2374	{
2066	if (expect_false (ev_is_active (w)))	2375	if (expect_false (ev_is_active (w)))
2067	return;	2376	return;
2068		2377
2069	{	2378	{
2070	struct ev_loop *loop = w->loop;	2379	struct ev_loop *loop = w->other;
2071	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2380	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2072	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2381	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2073	}	2382	}
2074		2383
2075	ev_set_priority (&w->io, ev_priority (w));	2384	ev_set_priority (&w->io, ev_priority (w));
2076	ev_io_start (EV_A_ &w->io);	2385	ev_io_start (EV_A_ &w->io);
2077		2386
		2387	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2388	ev_set_priority (&w->prepare, EV_MINPRI);
		2389	ev_prepare_start (EV_A_ &w->prepare);
		2390
		2391	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2392
2078	ev_start (EV_A_ (W)w, 1);	2393	ev_start (EV_A_ (W)w, 1);
2079	}	2394	}
2080		2395
2081	void	2396	void
2082	ev_embed_stop (EV_P_ ev_embed *w)	2397	ev_embed_stop (EV_P_ ev_embed *w)
2083	{	2398	{
2084	ev_clear_pending (EV_A_ (W)w);	2399	clear_pending (EV_A_ (W)w);
2085	if (expect_false (!ev_is_active (w)))	2400	if (expect_false (!ev_is_active (w)))
2086	return;	2401	return;
2087		2402
2088	ev_io_stop (EV_A_ &w->io);	2403	ev_io_stop (EV_A_ &w->io);
		2404	ev_prepare_stop (EV_A_ &w->prepare);
2089		2405
2090	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
2091	}	2407	}
2092	#endif	2408	#endif
2093		2409
…		…
2104	}	2420	}
2105		2421
2106	void	2422	void
2107	ev_fork_stop (EV_P_ ev_fork *w)	2423	ev_fork_stop (EV_P_ ev_fork *w)
2108	{	2424	{
2109	ev_clear_pending (EV_A_ (W)w);	2425	clear_pending (EV_A_ (W)w);
2110	if (expect_false (!ev_is_active (w)))	2426	if (expect_false (!ev_is_active (w)))
2111	return;	2427	return;
2112		2428
2113	{	2429	{
2114	int active = ((W)w)->active;	2430	int active = ((W)w)->active;
…		…
2118		2434
2119	ev_stop (EV_A_ (W)w);	2435	ev_stop (EV_A_ (W)w);
2120	}	2436	}
2121	#endif	2437	#endif
2122		2438
		2439	#if EV_ASYNC_ENABLE
		2440	void
		2441	ev_async_start (EV_P_ ev_async *w)
		2442	{
		2443	if (expect_false (ev_is_active (w)))
		2444	return;
		2445
		2446	evpipe_init (EV_A);
		2447
		2448	ev_start (EV_A_ (W)w, ++asynccnt);
		2449	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2450	asyncs [asynccnt - 1] = w;
		2451	}
		2452
		2453	void
		2454	ev_async_stop (EV_P_ ev_async *w)
		2455	{
		2456	clear_pending (EV_A_ (W)w);
		2457	if (expect_false (!ev_is_active (w)))
		2458	return;
		2459
		2460	{
		2461	int active = ((W)w)->active;
		2462	asyncs [active - 1] = asyncs [--asynccnt];
		2463	((W)asyncs [active - 1])->active = active;
		2464	}
		2465
		2466	ev_stop (EV_A_ (W)w);
		2467	}
		2468
		2469	void
		2470	ev_async_send (EV_P_ ev_async *w)
		2471	{
		2472	w->sent = 1;
		2473	evpipe_write (EV_A_ 0, 1);
		2474	}
		2475	#endif
		2476
2123	/*****************************************************************************/	2477	/*****************************************************************************/
2124		2478
2125	struct ev_once	2479	struct ev_once
2126	{	2480	{
2127	ev_io io;	2481	ev_io io;
…		…
2182	ev_timer_set (&once->to, timeout, 0.);	2536	ev_timer_set (&once->to, timeout, 0.);
2183	ev_timer_start (EV_A_ &once->to);	2537	ev_timer_start (EV_A_ &once->to);
2184	}	2538	}
2185	}	2539	}
2186		2540
		2541	#if EV_MULTIPLICITY
		2542	#include "ev_wrap.h"
		2543	#endif
		2544
2187	#ifdef __cplusplus	2545	#ifdef __cplusplus
2188	}	2546	}
2189	#endif	2547	#endif
2190		2548

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Comparing libev/ev.c (file contents): Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC vs. Revision 1.212 by root, Tue Feb 19 19:01:13 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.156 by root, Wed Nov 28 17:50:13 2007 UTC vs.
Revision 1.212 by root, Tue Feb 19 19:01:13 2008 UTC