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

Comparing libev/ev.c (file contents):
Revision 1.155 by root, Wed Nov 28 17:32:24 2007 UTC vs.
Revision 1.209 by root, Tue Feb 5 23:56:33 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); /* child 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;
		825
		826	if (sig) gotsig = 1;
		827	if (async) gotasync = 1;
		828
		829	write (evpipe [1], &old_errno, 1);
		830	errno = old_errno;
		831	}
		832	}
		833
		834	static void
		835	pipecb (EV_P_ ev_io *iow, int revents)
		836	{
		837	{
		838	int dummy;
		839	read (evpipe [0], &dummy, 1);
		840	}
		841
		842	if (gotsig)
		843	{
		844	int signum;
		845	gotsig = 0;
		846
		847	for (signum = signalmax; signum--; )
		848	if (signals [signum].gotsig)
		849	ev_feed_signal_event (EV_A_ signum + 1);
		850	}
		851
		852	#if EV_ASYNC_ENABLE
		853	if (gotasync)
		854	{
		855	int i;
		856	gotasync = 0;
		857
		858	for (i = asynccnt; i--; )
		859	if (asyncs [i]->sent)
		860	{
		861	asyncs [i]->sent = 0;
		862	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		863	}
		864	}
		865	#endif
752	}	866	}
753		867
754	/*****************************************************************************/	868	/*****************************************************************************/
755		869
		870	static void
		871	sighandler (int signum)
		872	{
		873	#if EV_MULTIPLICITY
		874	struct ev_loop *loop = &default_loop_struct;
		875	#endif
		876
		877	#if _WIN32
		878	signal (signum, sighandler);
		879	#endif
		880
		881	signals [signum - 1].gotsig = 1;
		882	evpipe_write (EV_A_ 1, 0);
		883	}
		884
		885	void noinline
		886	ev_feed_signal_event (EV_P_ int signum)
		887	{
		888	WL w;
		889
		890	#if EV_MULTIPLICITY
		891	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		892	#endif
		893
		894	--signum;
		895
		896	if (signum < 0 \|\| signum >= signalmax)
		897	return;
		898
		899	signals [signum].gotsig = 0;
		900
		901	for (w = signals [signum].head; w; w = w->next)
		902	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		903	}
		904
		905	/*****************************************************************************/
		906
756	static ev_child *childs [EV_PID_HASHSIZE];	907	static WL childs [EV_PID_HASHSIZE];
757		908
758	#ifndef _WIN32	909	#ifndef _WIN32
759		910
760	static ev_signal childev;	911	static ev_signal childev;
		912
		913	#ifndef WIFCONTINUED
		914	# define WIFCONTINUED(status) 0
		915	#endif
761		916
762	void inline_speed	917	void inline_speed
763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	918	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
764	{	919	{
765	ev_child *w;	920	ev_child *w;
		921	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
766		922
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	923	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		924	{
768	if (w->pid == pid \|\| !w->pid)	925	if ((w->pid == pid \|\| !w->pid)
		926	&& (!traced \|\| (w->flags & 1)))
769	{	927	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	928	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	929	w->rpid = pid;
772	w->rstatus = status;	930	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	931	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	932	}
		933	}
775	}	934	}
776		935
777	#ifndef WCONTINUED	936	#ifndef WCONTINUED
778	# define WCONTINUED 0	937	# define WCONTINUED 0
779	#endif	938	#endif
…		…
876	}	1035	}
877		1036
878	unsigned int	1037	unsigned int
879	ev_embeddable_backends (void)	1038	ev_embeddable_backends (void)
880	{	1039	{
881	return EVBACKEND_EPOLL	1040	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
882	\| EVBACKEND_KQUEUE	1041
883	\| EVBACKEND_PORT;	1042	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1043	/* please fix it and tell me how to detect the fix */
		1044	flags &= ~EVBACKEND_EPOLL;
		1045
		1046	return flags;
884	}	1047	}
885		1048
886	unsigned int	1049	unsigned int
887	ev_backend (EV_P)	1050	ev_backend (EV_P)
888	{	1051	{
889	return backend;	1052	return backend;
		1053	}
		1054
		1055	unsigned int
		1056	ev_loop_count (EV_P)
		1057	{
		1058	return loop_count;
		1059	}
		1060
		1061	void
		1062	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1063	{
		1064	io_blocktime = interval;
		1065	}
		1066
		1067	void
		1068	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1069	{
		1070	timeout_blocktime = interval;
890	}	1071	}
891		1072
892	static void noinline	1073	static void noinline
893	loop_init (EV_P_ unsigned int flags)	1074	loop_init (EV_P_ unsigned int flags)
894	{	1075	{
…		…
900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1081	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
901	have_monotonic = 1;	1082	have_monotonic = 1;
902	}	1083	}
903	#endif	1084	#endif
904		1085
905	ev_rt_now = ev_time ();	1086	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	1087	mn_now = get_clock ();
907	now_floor = mn_now;	1088	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	1089	rtmn_diff = ev_rt_now - mn_now;
		1090
		1091	io_blocktime = 0.;
		1092	timeout_blocktime = 0.;
		1093	backend = 0;
		1094	backend_fd = -1;
		1095	gotasync = 0;
		1096	#if EV_USE_INOTIFY
		1097	fs_fd = -2;
		1098	#endif
		1099
		1100	/* pid check not overridable via env */
		1101	#ifndef _WIN32
		1102	if (flags & EVFLAG_FORKCHECK)
		1103	curpid = getpid ();
		1104	#endif
909		1105
910	if (!(flags & EVFLAG_NOENV)	1106	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	1107	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	1108	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	1109	flags = atoi (getenv ("LIBEV_FLAGS"));
914		1110
915	if (!(flags & 0x0000ffffUL))	1111	if (!(flags & 0x0000ffffUL))
916	flags \|= ev_recommended_backends ();	1112	flags \|= ev_recommended_backends ();
917		1113
918	backend = 0;
919	backend_fd = -1;
920	#if EV_USE_INOTIFY
921	fs_fd = -2;
922	#endif
923
924	#if EV_USE_PORT	1114	#if EV_USE_PORT
925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1115	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
926	#endif	1116	#endif
927	#if EV_USE_KQUEUE	1117	#if EV_USE_KQUEUE
928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1118	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
935	#endif	1125	#endif
936	#if EV_USE_SELECT	1126	#if EV_USE_SELECT
937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1127	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
938	#endif	1128	#endif
939		1129
940	ev_init (&sigev, sigcb);	1130	ev_init (&pipeev, pipecb);
941	ev_set_priority (&sigev, EV_MAXPRI);	1131	ev_set_priority (&pipeev, EV_MAXPRI);
942	}	1132	}
943	}	1133	}
944		1134
945	static void noinline	1135	static void noinline
946	loop_destroy (EV_P)	1136	loop_destroy (EV_P)
947	{	1137	{
948	int i;	1138	int i;
		1139
		1140	if (ev_is_active (&pipeev))
		1141	{
		1142	ev_ref (EV_A); /* signal watcher */
		1143	ev_io_stop (EV_A_ &pipeev);
		1144
		1145	close (evpipe [0]); evpipe [0] = 0;
		1146	close (evpipe [1]); evpipe [1] = 0;
		1147	}
949		1148
950	#if EV_USE_INOTIFY	1149	#if EV_USE_INOTIFY
951	if (fs_fd >= 0)	1150	if (fs_fd >= 0)
952	close (fs_fd);	1151	close (fs_fd);
953	#endif	1152	#endif
…		…
970	#if EV_USE_SELECT	1169	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1170	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1171	#endif
973		1172
974	for (i = NUMPRI; i--; )	1173	for (i = NUMPRI; i--; )
		1174	{
975	array_free (pending, [i]);	1175	array_free (pending, [i]);
		1176	#if EV_IDLE_ENABLE
		1177	array_free (idle, [i]);
		1178	#endif
		1179	}
		1180
		1181	ev_free (anfds); anfdmax = 0;
976		1182
977	/* have to use the microsoft-never-gets-it-right macro */	1183	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1184	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1185	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1186	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1187	array_free (periodic, EMPTY);
982	#endif	1188	#endif
		1189	#if EV_FORK_ENABLE
983	array_free (idle, EMPTY0);	1190	array_free (fork, EMPTY);
		1191	#endif
984	array_free (prepare, EMPTY0);	1192	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1193	array_free (check, EMPTY);
		1194	#if EV_ASYNC_ENABLE
		1195	array_free (async, EMPTY);
		1196	#endif
986		1197
987	backend = 0;	1198	backend = 0;
988	}	1199	}
989		1200
990	void inline_size infy_fork (EV_P);	1201	void inline_size infy_fork (EV_P);
…		…
1003	#endif	1214	#endif
1004	#if EV_USE_INOTIFY	1215	#if EV_USE_INOTIFY
1005	infy_fork (EV_A);	1216	infy_fork (EV_A);
1006	#endif	1217	#endif
1007		1218
1008	if (ev_is_active (&sigev))	1219	if (ev_is_active (&pipeev))
1009	{	1220	{
1010	/* default loop */	1221	/* this "locks" the handlers against writing to the pipe */
		1222	gotsig = gotasync = 1;
1011		1223
1012	ev_ref (EV_A);	1224	ev_ref (EV_A);
1013	ev_io_stop (EV_A_ &sigev);	1225	ev_io_stop (EV_A_ &pipeev);
1014	close (sigpipe [0]);	1226	close (evpipe [0]);
1015	close (sigpipe [1]);	1227	close (evpipe [1]);
1016		1228
1017	while (pipe (sigpipe))
1018	syserr ("(libev) error creating pipe");
1019
1020	siginit (EV_A);	1229	evpipe_init (EV_A);
		1230	/* now iterate over everything, in case we missed something */
		1231	pipecb (EV_A_ &pipeev, EV_READ);
1021	}	1232	}
1022		1233
1023	postfork = 0;	1234	postfork = 0;
1024	}	1235	}
1025		1236
…		…
1047	}	1258	}
1048		1259
1049	void	1260	void
1050	ev_loop_fork (EV_P)	1261	ev_loop_fork (EV_P)
1051	{	1262	{
1052	postfork = 1;	1263	postfork = 1; /* must be in line with ev_default_fork */
1053	}	1264	}
1054		1265
1055	#endif	1266	#endif
1056		1267
1057	#if EV_MULTIPLICITY	1268	#if EV_MULTIPLICITY
…		…
1060	#else	1271	#else
1061	int	1272	int
1062	ev_default_loop (unsigned int flags)	1273	ev_default_loop (unsigned int flags)
1063	#endif	1274	#endif
1064	{	1275	{
1065	if (sigpipe [0] == sigpipe [1])
1066	if (pipe (sigpipe))
1067	return 0;
1068
1069	if (!ev_default_loop_ptr)	1276	if (!ev_default_loop_ptr)
1070	{	1277	{
1071	#if EV_MULTIPLICITY	1278	#if EV_MULTIPLICITY
1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1279	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1073	#else	1280	#else
…		…
1076		1283
1077	loop_init (EV_A_ flags);	1284	loop_init (EV_A_ flags);
1078		1285
1079	if (ev_backend (EV_A))	1286	if (ev_backend (EV_A))
1080	{	1287	{
1081	siginit (EV_A);
1082
1083	#ifndef _WIN32	1288	#ifndef _WIN32
1084	ev_signal_init (&childev, childcb, SIGCHLD);	1289	ev_signal_init (&childev, childcb, SIGCHLD);
1085	ev_set_priority (&childev, EV_MAXPRI);	1290	ev_set_priority (&childev, EV_MAXPRI);
1086	ev_signal_start (EV_A_ &childev);	1291	ev_signal_start (EV_A_ &childev);
1087	ev_unref (EV_A); /* child watcher should not keep loop alive */	1292	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1104	#ifndef _WIN32	1309	#ifndef _WIN32
1105	ev_ref (EV_A); /* child watcher */	1310	ev_ref (EV_A); /* child watcher */
1106	ev_signal_stop (EV_A_ &childev);	1311	ev_signal_stop (EV_A_ &childev);
1107	#endif	1312	#endif
1108		1313
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);	1314	loop_destroy (EV_A);
1116	}	1315	}
1117		1316
1118	void	1317	void
1119	ev_default_fork (void)	1318	ev_default_fork (void)
…		…
1121	#if EV_MULTIPLICITY	1320	#if EV_MULTIPLICITY
1122	struct ev_loop *loop = ev_default_loop_ptr;	1321	struct ev_loop *loop = ev_default_loop_ptr;
1123	#endif	1322	#endif
1124		1323
1125	if (backend)	1324	if (backend)
1126	postfork = 1;	1325	postfork = 1; /* must be in line with ev_loop_fork */
1127	}	1326	}
1128		1327
1129	/*****************************************************************************/	1328	/*****************************************************************************/
1130		1329
1131	int inline_size	1330	void
1132	any_pending (EV_P)	1331	ev_invoke (EV_P_ void *w, int revents)
1133	{	1332	{
1134	int pri;	1333	EV_CB_INVOKE ((W)w, revents);
1135
1136	for (pri = NUMPRI; pri--; )
1137	if (pendingcnt [pri])
1138	return 1;
1139
1140	return 0;
1141	}	1334	}
1142		1335
1143	void inline_speed	1336	void inline_speed
1144	call_pending (EV_P)	1337	call_pending (EV_P)
1145	{	1338	{
…		…
1163	void inline_size	1356	void inline_size
1164	timers_reify (EV_P)	1357	timers_reify (EV_P)
1165	{	1358	{
1166	while (timercnt && ((WT)timers [0])->at <= mn_now)	1359	while (timercnt && ((WT)timers [0])->at <= mn_now)
1167	{	1360	{
1168	ev_timer *w = timers [0];	1361	ev_timer w = (ev_timer )timers [0];
1169		1362
1170	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1363	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1171		1364
1172	/* first reschedule or stop timer */	1365	/* first reschedule or stop timer */
1173	if (w->repeat)	1366	if (w->repeat)
…		…
1176		1369
1177	((WT)w)->at += w->repeat;	1370	((WT)w)->at += w->repeat;
1178	if (((WT)w)->at < mn_now)	1371	if (((WT)w)->at < mn_now)
1179	((WT)w)->at = mn_now;	1372	((WT)w)->at = mn_now;
1180		1373
1181	downheap ((WT *)timers, timercnt, 0);	1374	downheap (timers, timercnt, 0);
1182	}	1375	}
1183	else	1376	else
1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1377	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1185		1378
1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1379	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1191	void inline_size	1384	void inline_size
1192	periodics_reify (EV_P)	1385	periodics_reify (EV_P)
1193	{	1386	{
1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1387	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1195	{	1388	{
1196	ev_periodic *w = periodics [0];	1389	ev_periodic w = (ev_periodic )periodics [0];
1197		1390
1198	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1391	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1199		1392
1200	/* first reschedule or stop timer */	1393	/* first reschedule or stop timer */
1201	if (w->reschedule_cb)	1394	if (w->reschedule_cb)
1202	{	1395	{
1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1396	((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));	1397	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1205	downheap ((WT *)periodics, periodiccnt, 0);	1398	downheap (periodics, periodiccnt, 0);
1206	}	1399	}
1207	else if (w->interval)	1400	else if (w->interval)
1208	{	1401	{
1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1402	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1403	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));	1404	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);	1405	downheap (periodics, periodiccnt, 0);
1212	}	1406	}
1213	else	1407	else
1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1408	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1215		1409
1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1410	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1223	int i;	1417	int i;
1224		1418
1225	/* adjust periodics after time jump */	1419	/* adjust periodics after time jump */
1226	for (i = 0; i < periodiccnt; ++i)	1420	for (i = 0; i < periodiccnt; ++i)
1227	{	1421	{
1228	ev_periodic *w = periodics [i];	1422	ev_periodic w = (ev_periodic )periodics [i];
1229		1423
1230	if (w->reschedule_cb)	1424	if (w->reschedule_cb)
1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1232	else if (w->interval)	1426	else if (w->interval)
1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1427	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1234	}	1428	}
1235		1429
1236	/* now rebuild the heap */	1430	/* now rebuild the heap */
1237	for (i = periodiccnt >> 1; i--; )	1431	for (i = periodiccnt >> 1; i--; )
1238	downheap ((WT *)periodics, periodiccnt, i);	1432	downheap (periodics, periodiccnt, i);
1239	}	1433	}
1240	#endif	1434	#endif
1241		1435
		1436	#if EV_IDLE_ENABLE
1242	int inline_size	1437	void inline_size
1243	time_update_monotonic (EV_P)	1438	idle_reify (EV_P)
1244	{	1439	{
		1440	if (expect_false (idleall))
		1441	{
		1442	int pri;
		1443
		1444	for (pri = NUMPRI; pri--; )
		1445	{
		1446	if (pendingcnt [pri])
		1447	break;
		1448
		1449	if (idlecnt [pri])
		1450	{
		1451	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1452	break;
		1453	}
		1454	}
		1455	}
		1456	}
		1457	#endif
		1458
		1459	void inline_speed
		1460	time_update (EV_P_ ev_tstamp max_block)
		1461	{
		1462	int i;
		1463
		1464	#if EV_USE_MONOTONIC
		1465	if (expect_true (have_monotonic))
		1466	{
		1467	ev_tstamp odiff = rtmn_diff;
		1468
1245	mn_now = get_clock ();	1469	mn_now = get_clock ();
1246		1470
		1471	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1472	/* interpolate in the meantime */
1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1473	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1248	{	1474	{
1249	ev_rt_now = rtmn_diff + mn_now;	1475	ev_rt_now = rtmn_diff + mn_now;
1250	return 0;	1476	return;
1251	}	1477	}
1252	else	1478
1253	{
1254	now_floor = mn_now;	1479	now_floor = mn_now;
1255	ev_rt_now = ev_time ();	1480	ev_rt_now = ev_time ();
1256	return 1;
1257	}
1258	}
1259		1481
1260	void inline_size	1482	/* loop a few times, before making important decisions.
1261	time_update (EV_P)	1483	* on the choice of "4": one iteration isn't enough,
1262	{	1484	* in case we get preempted during the calls to
1263	int i;	1485	* ev_time and get_clock. a second call is almost guaranteed
1264		1486	* to succeed in that case, though. and looping a few more times
1265	#if EV_USE_MONOTONIC	1487	* doesn't hurt either as we only do this on time-jumps or
1266	if (expect_true (have_monotonic))	1488	* in the unlikely event of having been preempted here.
1267	{	1489	*/
1268	if (time_update_monotonic (EV_A))	1490	for (i = 4; --i; )
1269	{	1491	{
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;	1492	rtmn_diff = ev_rt_now - mn_now;
1283		1493
1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1494	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1285	return; /* all is well */	1495	return; /* all is well */
1286		1496
1287	ev_rt_now = ev_time ();	1497	ev_rt_now = ev_time ();
1288	mn_now = get_clock ();	1498	mn_now = get_clock ();
1289	now_floor = mn_now;	1499	now_floor = mn_now;
1290	}	1500	}
1291		1501
1292	# if EV_PERIODIC_ENABLE	1502	# if EV_PERIODIC_ENABLE
1293	periodics_reschedule (EV_A);	1503	periodics_reschedule (EV_A);
1294	# endif	1504	# endif
1295	/* no timer adjustment, as the monotonic clock doesn't jump */	1505	/* no timer adjustment, as the monotonic clock doesn't jump */
1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1506	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1297	}
1298	}	1507	}
1299	else	1508	else
1300	#endif	1509	#endif
1301	{	1510	{
1302	ev_rt_now = ev_time ();	1511	ev_rt_now = ev_time ();
1303		1512
1304	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1513	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1305	{	1514	{
1306	#if EV_PERIODIC_ENABLE	1515	#if EV_PERIODIC_ENABLE
1307	periodics_reschedule (EV_A);	1516	periodics_reschedule (EV_A);
1308	#endif	1517	#endif
1309
1310	/* adjust timers. this is easy, as the offset is the same for all */	1518	/* adjust timers. this is easy, as the offset is the same for all of them */
1311	for (i = 0; i < timercnt; ++i)	1519	for (i = 0; i < timercnt; ++i)
1312	((WT)timers [i])->at += ev_rt_now - mn_now;	1520	((WT)timers [i])->at += ev_rt_now - mn_now;
1313	}	1521	}
1314		1522
1315	mn_now = ev_rt_now;	1523	mn_now = ev_rt_now;
…		…
1335	{	1543	{
1336	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1544	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1337	? EVUNLOOP_ONE	1545	? EVUNLOOP_ONE
1338	: EVUNLOOP_CANCEL;	1546	: EVUNLOOP_CANCEL;
1339		1547
1340	while (activecnt)	1548	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1549
		1550	do
1341	{	1551	{
1342	/* we might have forked, so reify kernel state if necessary */	1552	#ifndef _WIN32
		1553	if (expect_false (curpid)) /* penalise the forking check even more */
		1554	if (expect_false (getpid () != curpid))
		1555	{
		1556	curpid = getpid ();
		1557	postfork = 1;
		1558	}
		1559	#endif
		1560
1343	#if EV_FORK_ENABLE	1561	#if EV_FORK_ENABLE
		1562	/* we might have forked, so queue fork handlers */
1344	if (expect_false (postfork))	1563	if (expect_false (postfork))
1345	if (forkcnt)	1564	if (forkcnt)
1346	{	1565	{
1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1566	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1348	call_pending (EV_A);	1567	call_pending (EV_A);
1349	}	1568	}
1350	#endif	1569	#endif
1351		1570
1352	/* queue check watchers (and execute them) */	1571	/* queue prepare watchers (and execute them) */
1353	if (expect_false (preparecnt))	1572	if (expect_false (preparecnt))
1354	{	1573	{
1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1574	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1356	call_pending (EV_A);	1575	call_pending (EV_A);
1357	}	1576	}
1358		1577
		1578	if (expect_false (!activecnt))
		1579	break;
		1580
1359	/* we might have forked, so reify kernel state if necessary */	1581	/* we might have forked, so reify kernel state if necessary */
1360	if (expect_false (postfork))	1582	if (expect_false (postfork))
1361	loop_fork (EV_A);	1583	loop_fork (EV_A);
1362		1584
1363	/* update fd-related kernel structures */	1585	/* update fd-related kernel structures */
1364	fd_reify (EV_A);	1586	fd_reify (EV_A);
1365		1587
1366	/* calculate blocking time */	1588	/* calculate blocking time */
1367	{	1589	{
1368	double block;	1590	ev_tstamp waittime = 0.;
		1591	ev_tstamp sleeptime = 0.;
1369		1592
1370	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1593	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1371	block = 0.; /* do not block at all */
1372	else
1373	{	1594	{
1374	/* update time to cancel out callback processing overhead */	1595	/* 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);	1596	time_update (EV_A_ 1e100);
1378	else
1379	#endif
1380	{
1381	ev_rt_now = ev_time ();
1382	mn_now = ev_rt_now;
1383	}
1384		1597
1385	block = MAX_BLOCKTIME;	1598	waittime = MAX_BLOCKTIME;
1386		1599
1387	if (timercnt)	1600	if (timercnt)
1388	{	1601	{
1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1602	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1390	if (block > to) block = to;	1603	if (waittime > to) waittime = to;
1391	}	1604	}
1392		1605
1393	#if EV_PERIODIC_ENABLE	1606	#if EV_PERIODIC_ENABLE
1394	if (periodiccnt)	1607	if (periodiccnt)
1395	{	1608	{
1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1609	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1397	if (block > to) block = to;	1610	if (waittime > to) waittime = to;
1398	}	1611	}
1399	#endif	1612	#endif
1400		1613
1401	if (expect_false (block < 0.)) block = 0.;	1614	if (expect_false (waittime < timeout_blocktime))
		1615	waittime = timeout_blocktime;
		1616
		1617	sleeptime = waittime - backend_fudge;
		1618
		1619	if (expect_true (sleeptime > io_blocktime))
		1620	sleeptime = io_blocktime;
		1621
		1622	if (sleeptime)
		1623	{
		1624	ev_sleep (sleeptime);
		1625	waittime -= sleeptime;
		1626	}
1402	}	1627	}
1403		1628
		1629	++loop_count;
1404	backend_poll (EV_A_ block);	1630	backend_poll (EV_A_ waittime);
		1631
		1632	/* update ev_rt_now, do magic */
		1633	time_update (EV_A_ waittime + sleeptime);
1405	}	1634	}
1406
1407	/* update ev_rt_now, do magic */
1408	time_update (EV_A);
1409		1635
1410	/* queue pending timers and reschedule them */	1636	/* queue pending timers and reschedule them */
1411	timers_reify (EV_A); /* relative timers called last */	1637	timers_reify (EV_A); /* relative timers called last */
1412	#if EV_PERIODIC_ENABLE	1638	#if EV_PERIODIC_ENABLE
1413	periodics_reify (EV_A); /* absolute timers called first */	1639	periodics_reify (EV_A); /* absolute timers called first */
1414	#endif	1640	#endif
1415		1641
		1642	#if EV_IDLE_ENABLE
1416	/* queue idle watchers unless other events are pending */	1643	/* queue idle watchers unless other events are pending */
1417	if (idlecnt && !any_pending (EV_A))	1644	idle_reify (EV_A);
1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1645	#endif
1419		1646
1420	/* queue check watchers, to be executed first */	1647	/* queue check watchers, to be executed first */
1421	if (expect_false (checkcnt))	1648	if (expect_false (checkcnt))
1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1649	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1423		1650
1424	call_pending (EV_A);	1651	call_pending (EV_A);
1425		1652
1426	if (expect_false (loop_done))
1427	break;
1428	}	1653	}
		1654	while (expect_true (activecnt && !loop_done));
1429		1655
1430	if (loop_done == EVUNLOOP_ONE)	1656	if (loop_done == EVUNLOOP_ONE)
1431	loop_done = EVUNLOOP_CANCEL;	1657	loop_done = EVUNLOOP_CANCEL;
1432	}	1658	}
1433		1659
…		…
1460	head = &(*head)->next;	1686	head = &(*head)->next;
1461	}	1687	}
1462	}	1688	}
1463		1689
1464	void inline_speed	1690	void inline_speed
1465	ev_clear_pending (EV_P_ W w)	1691	clear_pending (EV_P_ W w)
1466	{	1692	{
1467	if (w->pending)	1693	if (w->pending)
1468	{	1694	{
1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1695	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1470	w->pending = 0;	1696	w->pending = 0;
1471	}	1697	}
1472	}	1698	}
1473		1699
		1700	int
		1701	ev_clear_pending (EV_P_ void *w)
		1702	{
		1703	W w_ = (W)w;
		1704	int pending = w_->pending;
		1705
		1706	if (expect_true (pending))
		1707	{
		1708	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1709	w_->pending = 0;
		1710	p->w = 0;
		1711	return p->events;
		1712	}
		1713	else
		1714	return 0;
		1715	}
		1716
		1717	void inline_size
		1718	pri_adjust (EV_P_ W w)
		1719	{
		1720	int pri = w->priority;
		1721	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1722	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1723	w->priority = pri;
		1724	}
		1725
1474	void inline_speed	1726	void inline_speed
1475	ev_start (EV_P_ W w, int active)	1727	ev_start (EV_P_ W w, int active)
1476	{	1728	{
1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1729	pri_adjust (EV_A_ w);
1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1479
1480	w->active = active;	1730	w->active = active;
1481	ev_ref (EV_A);	1731	ev_ref (EV_A);
1482	}	1732	}
1483		1733
1484	void inline_size	1734	void inline_size
…		…
1488	w->active = 0;	1738	w->active = 0;
1489	}	1739	}
1490		1740
1491	/*****************************************************************************/	1741	/*****************************************************************************/
1492		1742
1493	void	1743	void noinline
1494	ev_io_start (EV_P_ ev_io *w)	1744	ev_io_start (EV_P_ ev_io *w)
1495	{	1745	{
1496	int fd = w->fd;	1746	int fd = w->fd;
1497		1747
1498	if (expect_false (ev_is_active (w)))	1748	if (expect_false (ev_is_active (w)))
…		…
1500		1750
1501	assert (("ev_io_start called with negative fd", fd >= 0));	1751	assert (("ev_io_start called with negative fd", fd >= 0));
1502		1752
1503	ev_start (EV_A_ (W)w, 1);	1753	ev_start (EV_A_ (W)w, 1);
1504	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1754	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1505	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1755	wlist_add (&anfds[fd].head, (WL)w);
1506		1756
1507	fd_change (EV_A_ fd);	1757	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1758	w->events &= ~EV_IOFDSET;
1508	}	1759	}
1509		1760
1510	void	1761	void noinline
1511	ev_io_stop (EV_P_ ev_io *w)	1762	ev_io_stop (EV_P_ ev_io *w)
1512	{	1763	{
1513	ev_clear_pending (EV_A_ (W)w);	1764	clear_pending (EV_A_ (W)w);
1514	if (expect_false (!ev_is_active (w)))	1765	if (expect_false (!ev_is_active (w)))
1515	return;	1766	return;
1516		1767
1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1768	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1518		1769
1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1770	wlist_del (&anfds[w->fd].head, (WL)w);
1520	ev_stop (EV_A_ (W)w);	1771	ev_stop (EV_A_ (W)w);
1521		1772
1522	fd_change (EV_A_ w->fd);	1773	fd_change (EV_A_ w->fd, 1);
1523	}	1774	}
1524		1775
1525	void	1776	void noinline
1526	ev_timer_start (EV_P_ ev_timer *w)	1777	ev_timer_start (EV_P_ ev_timer *w)
1527	{	1778	{
1528	if (expect_false (ev_is_active (w)))	1779	if (expect_false (ev_is_active (w)))
1529	return;	1780	return;
1530		1781
1531	((WT)w)->at += mn_now;	1782	((WT)w)->at += mn_now;
1532		1783
1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1784	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1534		1785
1535	ev_start (EV_A_ (W)w, ++timercnt);	1786	ev_start (EV_A_ (W)w, ++timercnt);
1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1787	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1537	timers [timercnt - 1] = w;	1788	timers [timercnt - 1] = (WT)w;
1538	upheap ((WT *)timers, timercnt - 1);	1789	upheap (timers, timercnt - 1);
1539		1790
1540	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1791	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1541	}	1792	}
1542		1793
1543	void	1794	void noinline
1544	ev_timer_stop (EV_P_ ev_timer *w)	1795	ev_timer_stop (EV_P_ ev_timer *w)
1545	{	1796	{
1546	ev_clear_pending (EV_A_ (W)w);	1797	clear_pending (EV_A_ (W)w);
1547	if (expect_false (!ev_is_active (w)))	1798	if (expect_false (!ev_is_active (w)))
1548	return;	1799	return;
1549		1800
1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1801	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1551		1802
1552	{	1803	{
1553	int active = ((W)w)->active;	1804	int active = ((W)w)->active;
1554		1805
1555	if (expect_true (--active < --timercnt))	1806	if (expect_true (--active < --timercnt))
1556	{	1807	{
1557	timers [active] = timers [timercnt];	1808	timers [active] = timers [timercnt];
1558	adjustheap ((WT *)timers, timercnt, active);	1809	adjustheap (timers, timercnt, active);
1559	}	1810	}
1560	}	1811	}
1561		1812
1562	((WT)w)->at -= mn_now;	1813	((WT)w)->at -= mn_now;
1563		1814
1564	ev_stop (EV_A_ (W)w);	1815	ev_stop (EV_A_ (W)w);
1565	}	1816	}
1566		1817
1567	void	1818	void noinline
1568	ev_timer_again (EV_P_ ev_timer *w)	1819	ev_timer_again (EV_P_ ev_timer *w)
1569	{	1820	{
1570	if (ev_is_active (w))	1821	if (ev_is_active (w))
1571	{	1822	{
1572	if (w->repeat)	1823	if (w->repeat)
1573	{	1824	{
1574	((WT)w)->at = mn_now + w->repeat;	1825	((WT)w)->at = mn_now + w->repeat;
1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1826	adjustheap (timers, timercnt, ((W)w)->active - 1);
1576	}	1827	}
1577	else	1828	else
1578	ev_timer_stop (EV_A_ w);	1829	ev_timer_stop (EV_A_ w);
1579	}	1830	}
1580	else if (w->repeat)	1831	else if (w->repeat)
…		…
1583	ev_timer_start (EV_A_ w);	1834	ev_timer_start (EV_A_ w);
1584	}	1835	}
1585	}	1836	}
1586		1837
1587	#if EV_PERIODIC_ENABLE	1838	#if EV_PERIODIC_ENABLE
1588	void	1839	void noinline
1589	ev_periodic_start (EV_P_ ev_periodic *w)	1840	ev_periodic_start (EV_P_ ev_periodic *w)
1590	{	1841	{
1591	if (expect_false (ev_is_active (w)))	1842	if (expect_false (ev_is_active (w)))
1592	return;	1843	return;
1593		1844
…		…
1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1846	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1596	else if (w->interval)	1847	else if (w->interval)
1597	{	1848	{
1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1849	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 */	1850	/* 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;	1851	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1601	}	1852	}
		1853	else
		1854	((WT)w)->at = w->offset;
1602		1855
1603	ev_start (EV_A_ (W)w, ++periodiccnt);	1856	ev_start (EV_A_ (W)w, ++periodiccnt);
1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1857	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1605	periodics [periodiccnt - 1] = w;	1858	periodics [periodiccnt - 1] = (WT)w;
1606	upheap ((WT *)periodics, periodiccnt - 1);	1859	upheap (periodics, periodiccnt - 1);
1607		1860
1608	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1861	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1609	}	1862	}
1610		1863
1611	void	1864	void noinline
1612	ev_periodic_stop (EV_P_ ev_periodic *w)	1865	ev_periodic_stop (EV_P_ ev_periodic *w)
1613	{	1866	{
1614	ev_clear_pending (EV_A_ (W)w);	1867	clear_pending (EV_A_ (W)w);
1615	if (expect_false (!ev_is_active (w)))	1868	if (expect_false (!ev_is_active (w)))
1616	return;	1869	return;
1617		1870
1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1871	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1619		1872
1620	{	1873	{
1621	int active = ((W)w)->active;	1874	int active = ((W)w)->active;
1622		1875
1623	if (expect_true (--active < --periodiccnt))	1876	if (expect_true (--active < --periodiccnt))
1624	{	1877	{
1625	periodics [active] = periodics [periodiccnt];	1878	periodics [active] = periodics [periodiccnt];
1626	adjustheap ((WT *)periodics, periodiccnt, active);	1879	adjustheap (periodics, periodiccnt, active);
1627	}	1880	}
1628	}	1881	}
1629		1882
1630	ev_stop (EV_A_ (W)w);	1883	ev_stop (EV_A_ (W)w);
1631	}	1884	}
1632		1885
1633	void	1886	void noinline
1634	ev_periodic_again (EV_P_ ev_periodic *w)	1887	ev_periodic_again (EV_P_ ev_periodic *w)
1635	{	1888	{
1636	/* TODO: use adjustheap and recalculation */	1889	/* TODO: use adjustheap and recalculation */
1637	ev_periodic_stop (EV_A_ w);	1890	ev_periodic_stop (EV_A_ w);
1638	ev_periodic_start (EV_A_ w);	1891	ev_periodic_start (EV_A_ w);
…		…
1641		1894
1642	#ifndef SA_RESTART	1895	#ifndef SA_RESTART
1643	# define SA_RESTART 0	1896	# define SA_RESTART 0
1644	#endif	1897	#endif
1645		1898
1646	void	1899	void noinline
1647	ev_signal_start (EV_P_ ev_signal *w)	1900	ev_signal_start (EV_P_ ev_signal *w)
1648	{	1901	{
1649	#if EV_MULTIPLICITY	1902	#if EV_MULTIPLICITY
1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1903	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1651	#endif	1904	#endif
1652	if (expect_false (ev_is_active (w)))	1905	if (expect_false (ev_is_active (w)))
1653	return;	1906	return;
1654		1907
1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1908	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1656		1909
		1910	evpipe_init (EV_A);
		1911
		1912	{
		1913	#ifndef _WIN32
		1914	sigset_t full, prev;
		1915	sigfillset (&full);
		1916	sigprocmask (SIG_SETMASK, &full, &prev);
		1917	#endif
		1918
		1919	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1920
		1921	#ifndef _WIN32
		1922	sigprocmask (SIG_SETMASK, &prev, 0);
		1923	#endif
		1924	}
		1925
1657	ev_start (EV_A_ (W)w, 1);	1926	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);	1927	wlist_add (&signals [w->signum - 1].head, (WL)w);
1660		1928
1661	if (!((WL)w)->next)	1929	if (!((WL)w)->next)
1662	{	1930	{
1663	#if _WIN32	1931	#if _WIN32
1664	signal (w->signum, sighandler);	1932	signal (w->signum, sighandler);
…		…
1670	sigaction (w->signum, &sa, 0);	1938	sigaction (w->signum, &sa, 0);
1671	#endif	1939	#endif
1672	}	1940	}
1673	}	1941	}
1674		1942
1675	void	1943	void noinline
1676	ev_signal_stop (EV_P_ ev_signal *w)	1944	ev_signal_stop (EV_P_ ev_signal *w)
1677	{	1945	{
1678	ev_clear_pending (EV_A_ (W)w);	1946	clear_pending (EV_A_ (W)w);
1679	if (expect_false (!ev_is_active (w)))	1947	if (expect_false (!ev_is_active (w)))
1680	return;	1948	return;
1681		1949
1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1950	wlist_del (&signals [w->signum - 1].head, (WL)w);
1683	ev_stop (EV_A_ (W)w);	1951	ev_stop (EV_A_ (W)w);
1684		1952
1685	if (!signals [w->signum - 1].head)	1953	if (!signals [w->signum - 1].head)
1686	signal (w->signum, SIG_DFL);	1954	signal (w->signum, SIG_DFL);
1687	}	1955	}
…		…
1694	#endif	1962	#endif
1695	if (expect_false (ev_is_active (w)))	1963	if (expect_false (ev_is_active (w)))
1696	return;	1964	return;
1697		1965
1698	ev_start (EV_A_ (W)w, 1);	1966	ev_start (EV_A_ (W)w, 1);
1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1967	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1700	}	1968	}
1701		1969
1702	void	1970	void
1703	ev_child_stop (EV_P_ ev_child *w)	1971	ev_child_stop (EV_P_ ev_child *w)
1704	{	1972	{
1705	ev_clear_pending (EV_A_ (W)w);	1973	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	1974	if (expect_false (!ev_is_active (w)))
1707	return;	1975	return;
1708		1976
1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1977	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1710	ev_stop (EV_A_ (W)w);	1978	ev_stop (EV_A_ (W)w);
1711	}	1979	}
1712		1980
1713	#if EV_STAT_ENABLE	1981	#if EV_STAT_ENABLE
1714		1982
…		…
1718	# endif	1986	# endif
1719		1987
1720	#define DEF_STAT_INTERVAL 5.0074891	1988	#define DEF_STAT_INTERVAL 5.0074891
1721	#define MIN_STAT_INTERVAL 0.1074891	1989	#define MIN_STAT_INTERVAL 0.1074891
1722		1990
1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1991	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1724		1992
1725	#if EV_USE_INOTIFY	1993	#if EV_USE_INOTIFY
1726	# define EV_INOTIFY_BUFSIZE 8192	1994	# define EV_INOTIFY_BUFSIZE 8192
1727		1995
1728	static void noinline	1996	static void noinline
…		…
1879	w->attr.st_nlink = 0;	2147	w->attr.st_nlink = 0;
1880	else if (!w->attr.st_nlink)	2148	else if (!w->attr.st_nlink)
1881	w->attr.st_nlink = 1;	2149	w->attr.st_nlink = 1;
1882	}	2150	}
1883		2151
1884	void noinline	2152	static void noinline
1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2153	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1886	{	2154	{
1887	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2155	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1888		2156
1889	/* we copy this here each the time so that */	2157	/* we copy this here each the time so that */
1890	/* prev has the old value when the callback gets invoked */	2158	/* prev has the old value when the callback gets invoked */
1891	w->prev = w->attr;	2159	w->prev = w->attr;
1892	ev_stat_stat (EV_A_ w);	2160	ev_stat_stat (EV_A_ w);
1893		2161
1894	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2162	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2163	if (
		2164	w->prev.st_dev != w->attr.st_dev
		2165	\|\| w->prev.st_ino != w->attr.st_ino
		2166	\|\| w->prev.st_mode != w->attr.st_mode
		2167	\|\| w->prev.st_nlink != w->attr.st_nlink
		2168	\|\| w->prev.st_uid != w->attr.st_uid
		2169	\|\| w->prev.st_gid != w->attr.st_gid
		2170	\|\| w->prev.st_rdev != w->attr.st_rdev
		2171	\|\| w->prev.st_size != w->attr.st_size
		2172	\|\| w->prev.st_atime != w->attr.st_atime
		2173	\|\| w->prev.st_mtime != w->attr.st_mtime
		2174	\|\| w->prev.st_ctime != w->attr.st_ctime
1895	{	2175	) {
1896	#if EV_USE_INOTIFY	2176	#if EV_USE_INOTIFY
1897	infy_del (EV_A_ w);	2177	infy_del (EV_A_ w);
1898	infy_add (EV_A_ w);	2178	infy_add (EV_A_ w);
1899	ev_stat_stat (EV_A_ w); /* avoid race... */	2179	ev_stat_stat (EV_A_ w); /* avoid race... */
1900	#endif	2180	#endif
…		…
1934	}	2214	}
1935		2215
1936	void	2216	void
1937	ev_stat_stop (EV_P_ ev_stat *w)	2217	ev_stat_stop (EV_P_ ev_stat *w)
1938	{	2218	{
1939	ev_clear_pending (EV_A_ (W)w);	2219	clear_pending (EV_A_ (W)w);
1940	if (expect_false (!ev_is_active (w)))	2220	if (expect_false (!ev_is_active (w)))
1941	return;	2221	return;
1942		2222
1943	#if EV_USE_INOTIFY	2223	#if EV_USE_INOTIFY
1944	infy_del (EV_A_ w);	2224	infy_del (EV_A_ w);
…		…
1947		2227
1948	ev_stop (EV_A_ (W)w);	2228	ev_stop (EV_A_ (W)w);
1949	}	2229	}
1950	#endif	2230	#endif
1951		2231
		2232	#if EV_IDLE_ENABLE
1952	void	2233	void
1953	ev_idle_start (EV_P_ ev_idle *w)	2234	ev_idle_start (EV_P_ ev_idle *w)
1954	{	2235	{
1955	if (expect_false (ev_is_active (w)))	2236	if (expect_false (ev_is_active (w)))
1956	return;	2237	return;
1957		2238
		2239	pri_adjust (EV_A_ (W)w);
		2240
		2241	{
		2242	int active = ++idlecnt [ABSPRI (w)];
		2243
		2244	++idleall;
1958	ev_start (EV_A_ (W)w, ++idlecnt);	2245	ev_start (EV_A_ (W)w, active);
		2246
1959	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2247	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1960	idles [idlecnt - 1] = w;	2248	idles [ABSPRI (w)][active - 1] = w;
		2249	}
1961	}	2250	}
1962		2251
1963	void	2252	void
1964	ev_idle_stop (EV_P_ ev_idle *w)	2253	ev_idle_stop (EV_P_ ev_idle *w)
1965	{	2254	{
1966	ev_clear_pending (EV_A_ (W)w);	2255	clear_pending (EV_A_ (W)w);
1967	if (expect_false (!ev_is_active (w)))	2256	if (expect_false (!ev_is_active (w)))
1968	return;	2257	return;
1969		2258
1970	{	2259	{
1971	int active = ((W)w)->active;	2260	int active = ((W)w)->active;
1972	idles [active - 1] = idles [--idlecnt];	2261
		2262	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1973	((W)idles [active - 1])->active = active;	2263	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2264
		2265	ev_stop (EV_A_ (W)w);
		2266	--idleall;
1974	}	2267	}
1975
1976	ev_stop (EV_A_ (W)w);
1977	}	2268	}
		2269	#endif
1978		2270
1979	void	2271	void
1980	ev_prepare_start (EV_P_ ev_prepare *w)	2272	ev_prepare_start (EV_P_ ev_prepare *w)
1981	{	2273	{
1982	if (expect_false (ev_is_active (w)))	2274	if (expect_false (ev_is_active (w)))
…		…
1988	}	2280	}
1989		2281
1990	void	2282	void
1991	ev_prepare_stop (EV_P_ ev_prepare *w)	2283	ev_prepare_stop (EV_P_ ev_prepare *w)
1992	{	2284	{
1993	ev_clear_pending (EV_A_ (W)w);	2285	clear_pending (EV_A_ (W)w);
1994	if (expect_false (!ev_is_active (w)))	2286	if (expect_false (!ev_is_active (w)))
1995	return;	2287	return;
1996		2288
1997	{	2289	{
1998	int active = ((W)w)->active;	2290	int active = ((W)w)->active;
…		…
2015	}	2307	}
2016		2308
2017	void	2309	void
2018	ev_check_stop (EV_P_ ev_check *w)	2310	ev_check_stop (EV_P_ ev_check *w)
2019	{	2311	{
2020	ev_clear_pending (EV_A_ (W)w);	2312	clear_pending (EV_A_ (W)w);
2021	if (expect_false (!ev_is_active (w)))	2313	if (expect_false (!ev_is_active (w)))
2022	return;	2314	return;
2023		2315
2024	{	2316	{
2025	int active = ((W)w)->active;	2317	int active = ((W)w)->active;
…		…
2032		2324
2033	#if EV_EMBED_ENABLE	2325	#if EV_EMBED_ENABLE
2034	void noinline	2326	void noinline
2035	ev_embed_sweep (EV_P_ ev_embed *w)	2327	ev_embed_sweep (EV_P_ ev_embed *w)
2036	{	2328	{
2037	ev_loop (w->loop, EVLOOP_NONBLOCK);	2329	ev_loop (w->other, EVLOOP_NONBLOCK);
2038	}	2330	}
2039		2331
2040	static void	2332	static void
2041	embed_cb (EV_P_ ev_io *io, int revents)	2333	embed_io_cb (EV_P_ ev_io *io, int revents)
2042	{	2334	{
2043	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2335	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2044		2336
2045	if (ev_cb (w))	2337	if (ev_cb (w))
2046	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2338	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2047	else	2339	else
2048	ev_embed_sweep (loop, w);	2340	ev_loop (w->other, EVLOOP_NONBLOCK);
2049	}	2341	}
		2342
		2343	static void
		2344	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2345	{
		2346	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2347
		2348	{
		2349	struct ev_loop *loop = w->other;
		2350
		2351	while (fdchangecnt)
		2352	{
		2353	fd_reify (EV_A);
		2354	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2355	}
		2356	}
		2357	}
		2358
		2359	#if 0
		2360	static void
		2361	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2362	{
		2363	ev_idle_stop (EV_A_ idle);
		2364	}
		2365	#endif
2050		2366
2051	void	2367	void
2052	ev_embed_start (EV_P_ ev_embed *w)	2368	ev_embed_start (EV_P_ ev_embed *w)
2053	{	2369	{
2054	if (expect_false (ev_is_active (w)))	2370	if (expect_false (ev_is_active (w)))
2055	return;	2371	return;
2056		2372
2057	{	2373	{
2058	struct ev_loop *loop = w->loop;	2374	struct ev_loop *loop = w->other;
2059	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2375	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2060	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2376	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2061	}	2377	}
2062		2378
2063	ev_set_priority (&w->io, ev_priority (w));	2379	ev_set_priority (&w->io, ev_priority (w));
2064	ev_io_start (EV_A_ &w->io);	2380	ev_io_start (EV_A_ &w->io);
2065		2381
		2382	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2383	ev_set_priority (&w->prepare, EV_MINPRI);
		2384	ev_prepare_start (EV_A_ &w->prepare);
		2385
		2386	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2387
2066	ev_start (EV_A_ (W)w, 1);	2388	ev_start (EV_A_ (W)w, 1);
2067	}	2389	}
2068		2390
2069	void	2391	void
2070	ev_embed_stop (EV_P_ ev_embed *w)	2392	ev_embed_stop (EV_P_ ev_embed *w)
2071	{	2393	{
2072	ev_clear_pending (EV_A_ (W)w);	2394	clear_pending (EV_A_ (W)w);
2073	if (expect_false (!ev_is_active (w)))	2395	if (expect_false (!ev_is_active (w)))
2074	return;	2396	return;
2075		2397
2076	ev_io_stop (EV_A_ &w->io);	2398	ev_io_stop (EV_A_ &w->io);
		2399	ev_prepare_stop (EV_A_ &w->prepare);
2077		2400
2078	ev_stop (EV_A_ (W)w);	2401	ev_stop (EV_A_ (W)w);
2079	}	2402	}
2080	#endif	2403	#endif
2081		2404
…		…
2092	}	2415	}
2093		2416
2094	void	2417	void
2095	ev_fork_stop (EV_P_ ev_fork *w)	2418	ev_fork_stop (EV_P_ ev_fork *w)
2096	{	2419	{
2097	ev_clear_pending (EV_A_ (W)w);	2420	clear_pending (EV_A_ (W)w);
2098	if (expect_false (!ev_is_active (w)))	2421	if (expect_false (!ev_is_active (w)))
2099	return;	2422	return;
2100		2423
2101	{	2424	{
2102	int active = ((W)w)->active;	2425	int active = ((W)w)->active;
…		…
2106		2429
2107	ev_stop (EV_A_ (W)w);	2430	ev_stop (EV_A_ (W)w);
2108	}	2431	}
2109	#endif	2432	#endif
2110		2433
		2434	#if EV_ASYNC_ENABLE
		2435	void
		2436	ev_async_start (EV_P_ ev_async *w)
		2437	{
		2438	if (expect_false (ev_is_active (w)))
		2439	return;
		2440
		2441	evpipe_init (EV_A);
		2442
		2443	ev_start (EV_A_ (W)w, ++asynccnt);
		2444	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2445	asyncs [asynccnt - 1] = w;
		2446	}
		2447
		2448	void
		2449	ev_async_stop (EV_P_ ev_async *w)
		2450	{
		2451	clear_pending (EV_A_ (W)w);
		2452	if (expect_false (!ev_is_active (w)))
		2453	return;
		2454
		2455	{
		2456	int active = ((W)w)->active;
		2457	asyncs [active - 1] = asyncs [--asynccnt];
		2458	((W)asyncs [active - 1])->active = active;
		2459	}
		2460
		2461	ev_stop (EV_A_ (W)w);
		2462	}
		2463
		2464	void
		2465	ev_async_send (EV_P_ ev_async *w)
		2466	{
		2467	w->sent = 1;
		2468	evpipe_write (EV_A_ 0, 1);
		2469	}
		2470	#endif
		2471
2111	/*****************************************************************************/	2472	/*****************************************************************************/
2112		2473
2113	struct ev_once	2474	struct ev_once
2114	{	2475	{
2115	ev_io io;	2476	ev_io io;
…		…
2170	ev_timer_set (&once->to, timeout, 0.);	2531	ev_timer_set (&once->to, timeout, 0.);
2171	ev_timer_start (EV_A_ &once->to);	2532	ev_timer_start (EV_A_ &once->to);
2172	}	2533	}
2173	}	2534	}
2174		2535
		2536	#if EV_MULTIPLICITY
		2537	#include "ev_wrap.h"
		2538	#endif
		2539
2175	#ifdef __cplusplus	2540	#ifdef __cplusplus
2176	}	2541	}
2177	#endif	2542	#endif
2178		2543

Diff Legend

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

Comparing libev/ev.c (file contents): Revision 1.155 by root, Wed Nov 28 17:32:24 2007 UTC vs. Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.155 by root, Wed Nov 28 17:32:24 2007 UTC vs.
Revision 1.209 by root, Tue Feb 5 23:56:33 2008 UTC