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

Comparing libev/ev.c (file contents):
Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

…		…
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 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 sig_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;
513	anfd->handle = _get_osfhandle (fd);	605	anfd->handle = _get_osfhandle (fd);
514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	606	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515	}	607	}
516	#endif	608	#endif
517		609
		610	{
		611	unsigned char o_events = anfd->events;
		612	unsigned char o_reify = anfd->reify;
		613
518	anfd->reify = 0;	614	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	anfd->events = events;	615	anfd->events = events;
		616
		617	if (o_events != events \|\| o_reify & EV_IOFDSET)
		618	backend_modify (EV_A_ fd, o_events, events);
		619	}
522	}	620	}
523		621
524	fdchangecnt = 0;	622	fdchangecnt = 0;
525	}	623	}
526		624
527	void inline_size	625	void inline_size
528	fd_change (EV_P_ int fd)	626	fd_change (EV_P_ int fd, int flags)
529	{	627	{
530	if (expect_false (anfds [fd].reify))	628	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	629	anfds [fd].reify \|= flags;
534		630
		631	if (expect_true (!reify))
		632	{
535	++fdchangecnt;	633	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	634	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	635	fdchanges [fdchangecnt - 1] = fd;
		636	}
538	}	637	}
539		638
540	void inline_speed	639	void inline_speed
541	fd_kill (EV_P_ int fd)	640	fd_kill (EV_P_ int fd)
542	{	641	{
…		…
593		692
594	for (fd = 0; fd < anfdmax; ++fd)	693	for (fd = 0; fd < anfdmax; ++fd)
595	if (anfds [fd].events)	694	if (anfds [fd].events)
596	{	695	{
597	anfds [fd].events = 0;	696	anfds [fd].events = 0;
598	fd_change (EV_A_ fd);	697	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
599	}	698	}
600	}	699	}
601		700
602	/*****************************************************************************/	701	/*****************************************************************************/
603		702
604	void inline_speed	703	void inline_speed
605	upheap (WT *heap, int k)	704	upheap (WT *heap, int k)
606	{	705	{
607	WT w = heap [k];	706	WT w = heap [k];
608		707
609	while (k && heap [k >> 1]->at > w->at)	708	while (k)
610	{	709	{
		710	int p = (k - 1) >> 1;
		711
		712	if (heap [p]->at <= w->at)
		713	break;
		714
611	heap [k] = heap [k >> 1];	715	heap [k] = heap [p];
612	((W)heap [k])->active = k + 1;	716	((W)heap [k])->active = k + 1;
613	k >>= 1;	717	k = p;
614	}	718	}
615		719
616	heap [k] = w;	720	heap [k] = w;
617	((W)heap [k])->active = k + 1;	721	((W)heap [k])->active = k + 1;
618
619	}	722	}
620		723
621	void inline_speed	724	void inline_speed
622	downheap (WT *heap, int N, int k)	725	downheap (WT *heap, int N, int k)
623	{	726	{
624	WT w = heap [k];	727	WT w = heap [k];
625		728
626	while (k < (N >> 1))	729	for (;;)
627	{	730	{
628	int j = k << 1;	731	int c = (k << 1) + 1;
629		732
630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	733	if (c >= N)
631	++j;
632
633	if (w->at <= heap [j]->at)
634	break;	734	break;
635		735
		736	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		737	? 1 : 0;
		738
		739	if (w->at <= heap [c]->at)
		740	break;
		741
636	heap [k] = heap [j];	742	heap [k] = heap [c];
637	((W)heap [k])->active = k + 1;	743	((W)heap [k])->active = k + 1;
		744
638	k = j;	745	k = c;
639	}	746	}
640		747
641	heap [k] = w;	748	heap [k] = w;
642	((W)heap [k])->active = k + 1;	749	((W)heap [k])->active = k + 1;
643	}	750	}
…		…
725	for (signum = signalmax; signum--; )	832	for (signum = signalmax; signum--; )
726	if (signals [signum].gotsig)	833	if (signals [signum].gotsig)
727	ev_feed_signal_event (EV_A_ signum + 1);	834	ev_feed_signal_event (EV_A_ signum + 1);
728	}	835	}
729		836
730	void inline_size	837	void inline_speed
731	fd_intern (int fd)	838	fd_intern (int fd)
732	{	839	{
733	#ifdef _WIN32	840	#ifdef _WIN32
734	int arg = 1;	841	int arg = 1;
735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	842	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
750	ev_unref (EV_A); /* child watcher should not keep loop alive */	857	ev_unref (EV_A); /* child watcher should not keep loop alive */
751	}	858	}
752		859
753	/*****************************************************************************/	860	/*****************************************************************************/
754		861
755	static ev_child *childs [EV_PID_HASHSIZE];	862	static WL childs [EV_PID_HASHSIZE];
756		863
757	#ifndef _WIN32	864	#ifndef _WIN32
758		865
759	static ev_signal childev;	866	static ev_signal childev;
760		867
…		…
764	ev_child *w;	871	ev_child *w;
765		872
766	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	873	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
767	if (w->pid == pid \|\| !w->pid)	874	if (w->pid == pid \|\| !w->pid)
768	{	875	{
769	ev_priority (w) = ev_priority (sw); /* need to do it now */	876	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
770	w->rpid = pid;	877	w->rpid = pid;
771	w->rstatus = status;	878	w->rstatus = status;
772	ev_feed_event (EV_A_ (W)w, EV_CHILD);	879	ev_feed_event (EV_A_ (W)w, EV_CHILD);
773	}	880	}
774	}	881	}
775		882
776	#ifndef WCONTINUED	883	#ifndef WCONTINUED
…		…
875	}	982	}
876		983
877	unsigned int	984	unsigned int
878	ev_embeddable_backends (void)	985	ev_embeddable_backends (void)
879	{	986	{
880	return EVBACKEND_EPOLL	987	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
881	\| EVBACKEND_KQUEUE	988
882	\| EVBACKEND_PORT;	989	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		990	/* please fix it and tell me how to detect the fix */
		991	flags &= ~EVBACKEND_EPOLL;
		992
		993	return flags;
883	}	994	}
884		995
885	unsigned int	996	unsigned int
886	ev_backend (EV_P)	997	ev_backend (EV_P)
887	{	998	{
…		…
890		1001
891	unsigned int	1002	unsigned int
892	ev_loop_count (EV_P)	1003	ev_loop_count (EV_P)
893	{	1004	{
894	return loop_count;	1005	return loop_count;
		1006	}
		1007
		1008	void
		1009	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1010	{
		1011	io_blocktime = interval;
		1012	}
		1013
		1014	void
		1015	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1016	{
		1017	timeout_blocktime = interval;
895	}	1018	}
896		1019
897	static void noinline	1020	static void noinline
898	loop_init (EV_P_ unsigned int flags)	1021	loop_init (EV_P_ unsigned int flags)
899	{	1022	{
…		…
910	ev_rt_now = ev_time ();	1033	ev_rt_now = ev_time ();
911	mn_now = get_clock ();	1034	mn_now = get_clock ();
912	now_floor = mn_now;	1035	now_floor = mn_now;
913	rtmn_diff = ev_rt_now - mn_now;	1036	rtmn_diff = ev_rt_now - mn_now;
914		1037
		1038	io_blocktime = 0.;
		1039	timeout_blocktime = 0.;
		1040
915	/* pid check not overridable via env */	1041	/* pid check not overridable via env */
916	#ifndef _WIN32	1042	#ifndef _WIN32
917	if (flags & EVFLAG_FORKCHECK)	1043	if (flags & EVFLAG_FORKCHECK)
918	curpid = getpid ();	1044	curpid = getpid ();
919	#endif	1045	#endif
…		…
981	#if EV_USE_SELECT	1107	#if EV_USE_SELECT
982	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1108	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
983	#endif	1109	#endif
984		1110
985	for (i = NUMPRI; i--; )	1111	for (i = NUMPRI; i--; )
		1112	{
986	array_free (pending, [i]);	1113	array_free (pending, [i]);
		1114	#if EV_IDLE_ENABLE
		1115	array_free (idle, [i]);
		1116	#endif
		1117	}
		1118
		1119	ev_free (anfds); anfdmax = 0;
987		1120
988	/* have to use the microsoft-never-gets-it-right macro */	1121	/* have to use the microsoft-never-gets-it-right macro */
989	array_free (fdchange, EMPTY0);	1122	array_free (fdchange, EMPTY);
990	array_free (timer, EMPTY0);	1123	array_free (timer, EMPTY);
991	#if EV_PERIODIC_ENABLE	1124	#if EV_PERIODIC_ENABLE
992	array_free (periodic, EMPTY0);	1125	array_free (periodic, EMPTY);
993	#endif	1126	#endif
		1127	#if EV_FORK_ENABLE
994	array_free (idle, EMPTY0);	1128	array_free (fork, EMPTY);
		1129	#endif
995	array_free (prepare, EMPTY0);	1130	array_free (prepare, EMPTY);
996	array_free (check, EMPTY0);	1131	array_free (check, EMPTY);
997		1132
998	backend = 0;	1133	backend = 0;
999	}	1134	}
1000		1135
1001	void inline_size infy_fork (EV_P);	1136	void inline_size infy_fork (EV_P);
…		…
1137	postfork = 1;	1272	postfork = 1;
1138	}	1273	}
1139		1274
1140	/*****************************************************************************/	1275	/*****************************************************************************/
1141		1276
1142	int inline_size	1277	void
1143	any_pending (EV_P)	1278	ev_invoke (EV_P_ void *w, int revents)
1144	{	1279	{
1145	int pri;	1280	EV_CB_INVOKE ((W)w, revents);
1146
1147	for (pri = NUMPRI; pri--; )
1148	if (pendingcnt [pri])
1149	return 1;
1150
1151	return 0;
1152	}	1281	}
1153		1282
1154	void inline_speed	1283	void inline_speed
1155	call_pending (EV_P)	1284	call_pending (EV_P)
1156	{	1285	{
…		…
1174	void inline_size	1303	void inline_size
1175	timers_reify (EV_P)	1304	timers_reify (EV_P)
1176	{	1305	{
1177	while (timercnt && ((WT)timers [0])->at <= mn_now)	1306	while (timercnt && ((WT)timers [0])->at <= mn_now)
1178	{	1307	{
1179	ev_timer *w = timers [0];	1308	ev_timer w = (ev_timer )timers [0];
1180		1309
1181	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1310	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1182		1311
1183	/* first reschedule or stop timer */	1312	/* first reschedule or stop timer */
1184	if (w->repeat)	1313	if (w->repeat)
…		…
1187		1316
1188	((WT)w)->at += w->repeat;	1317	((WT)w)->at += w->repeat;
1189	if (((WT)w)->at < mn_now)	1318	if (((WT)w)->at < mn_now)
1190	((WT)w)->at = mn_now;	1319	((WT)w)->at = mn_now;
1191		1320
1192	downheap ((WT *)timers, timercnt, 0);	1321	downheap (timers, timercnt, 0);
1193	}	1322	}
1194	else	1323	else
1195	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1324	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1196		1325
1197	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1326	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1202	void inline_size	1331	void inline_size
1203	periodics_reify (EV_P)	1332	periodics_reify (EV_P)
1204	{	1333	{
1205	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1334	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1206	{	1335	{
1207	ev_periodic *w = periodics [0];	1336	ev_periodic w = (ev_periodic )periodics [0];
1208		1337
1209	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1338	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1210		1339
1211	/* first reschedule or stop timer */	1340	/* first reschedule or stop timer */
1212	if (w->reschedule_cb)	1341	if (w->reschedule_cb)
1213	{	1342	{
1214	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1343	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1215	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1344	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1216	downheap ((WT *)periodics, periodiccnt, 0);	1345	downheap (periodics, periodiccnt, 0);
1217	}	1346	}
1218	else if (w->interval)	1347	else if (w->interval)
1219	{	1348	{
1220	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1349	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1350	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1221	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1351	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1222	downheap ((WT *)periodics, periodiccnt, 0);	1352	downheap (periodics, periodiccnt, 0);
1223	}	1353	}
1224	else	1354	else
1225	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1355	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1226		1356
1227	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1357	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1234	int i;	1364	int i;
1235		1365
1236	/* adjust periodics after time jump */	1366	/* adjust periodics after time jump */
1237	for (i = 0; i < periodiccnt; ++i)	1367	for (i = 0; i < periodiccnt; ++i)
1238	{	1368	{
1239	ev_periodic *w = periodics [i];	1369	ev_periodic w = (ev_periodic )periodics [i];
1240		1370
1241	if (w->reschedule_cb)	1371	if (w->reschedule_cb)
1242	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1372	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1243	else if (w->interval)	1373	else if (w->interval)
1244	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1374	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1245	}	1375	}
1246		1376
1247	/* now rebuild the heap */	1377	/* now rebuild the heap */
1248	for (i = periodiccnt >> 1; i--; )	1378	for (i = periodiccnt >> 1; i--; )
1249	downheap ((WT *)periodics, periodiccnt, i);	1379	downheap (periodics, periodiccnt, i);
1250	}	1380	}
1251	#endif	1381	#endif
1252		1382
		1383	#if EV_IDLE_ENABLE
1253	int inline_size	1384	void inline_size
1254	time_update_monotonic (EV_P)	1385	idle_reify (EV_P)
1255	{	1386	{
		1387	if (expect_false (idleall))
		1388	{
		1389	int pri;
		1390
		1391	for (pri = NUMPRI; pri--; )
		1392	{
		1393	if (pendingcnt [pri])
		1394	break;
		1395
		1396	if (idlecnt [pri])
		1397	{
		1398	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1399	break;
		1400	}
		1401	}
		1402	}
		1403	}
		1404	#endif
		1405
		1406	void inline_speed
		1407	time_update (EV_P_ ev_tstamp max_block)
		1408	{
		1409	int i;
		1410
		1411	#if EV_USE_MONOTONIC
		1412	if (expect_true (have_monotonic))
		1413	{
		1414	ev_tstamp odiff = rtmn_diff;
		1415
1256	mn_now = get_clock ();	1416	mn_now = get_clock ();
1257		1417
		1418	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1419	/* interpolate in the meantime */
1258	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1420	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1259	{	1421	{
1260	ev_rt_now = rtmn_diff + mn_now;	1422	ev_rt_now = rtmn_diff + mn_now;
1261	return 0;	1423	return;
1262	}	1424	}
1263	else	1425
1264	{
1265	now_floor = mn_now;	1426	now_floor = mn_now;
1266	ev_rt_now = ev_time ();	1427	ev_rt_now = ev_time ();
1267	return 1;
1268	}
1269	}
1270		1428
1271	void inline_size	1429	/* loop a few times, before making important decisions.
1272	time_update (EV_P)	1430	* on the choice of "4": one iteration isn't enough,
1273	{	1431	* in case we get preempted during the calls to
1274	int i;	1432	* ev_time and get_clock. a second call is almost guaranteed
1275		1433	* to succeed in that case, though. and looping a few more times
1276	#if EV_USE_MONOTONIC	1434	* doesn't hurt either as we only do this on time-jumps or
1277	if (expect_true (have_monotonic))	1435	* in the unlikely event of having been preempted here.
1278	{	1436	*/
1279	if (time_update_monotonic (EV_A))	1437	for (i = 4; --i; )
1280	{	1438	{
1281	ev_tstamp odiff = rtmn_diff;
1282
1283	/* loop a few times, before making important decisions.
1284	* on the choice of "4": one iteration isn't enough,
1285	* in case we get preempted during the calls to
1286	* ev_time and get_clock. a second call is almost guaranteed
1287	* to succeed in that case, though. and looping a few more times
1288	* doesn't hurt either as we only do this on time-jumps or
1289	* in the unlikely event of having been preempted here.
1290	*/
1291	for (i = 4; --i; )
1292	{
1293	rtmn_diff = ev_rt_now - mn_now;	1439	rtmn_diff = ev_rt_now - mn_now;
1294		1440
1295	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1441	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1296	return; /* all is well */	1442	return; /* all is well */
1297		1443
1298	ev_rt_now = ev_time ();	1444	ev_rt_now = ev_time ();
1299	mn_now = get_clock ();	1445	mn_now = get_clock ();
1300	now_floor = mn_now;	1446	now_floor = mn_now;
1301	}	1447	}
1302		1448
1303	# if EV_PERIODIC_ENABLE	1449	# if EV_PERIODIC_ENABLE
1304	periodics_reschedule (EV_A);	1450	periodics_reschedule (EV_A);
1305	# endif	1451	# endif
1306	/* no timer adjustment, as the monotonic clock doesn't jump */	1452	/* no timer adjustment, as the monotonic clock doesn't jump */
1307	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1453	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1308	}
1309	}	1454	}
1310	else	1455	else
1311	#endif	1456	#endif
1312	{	1457	{
1313	ev_rt_now = ev_time ();	1458	ev_rt_now = ev_time ();
1314		1459
1315	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1460	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1316	{	1461	{
1317	#if EV_PERIODIC_ENABLE	1462	#if EV_PERIODIC_ENABLE
1318	periodics_reschedule (EV_A);	1463	periodics_reschedule (EV_A);
1319	#endif	1464	#endif
1320
1321	/* adjust timers. this is easy, as the offset is the same for all of them */	1465	/* adjust timers. this is easy, as the offset is the same for all of them */
1322	for (i = 0; i < timercnt; ++i)	1466	for (i = 0; i < timercnt; ++i)
1323	((WT)timers [i])->at += ev_rt_now - mn_now;	1467	((WT)timers [i])->at += ev_rt_now - mn_now;
1324	}	1468	}
1325		1469
…		…
1369	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1513	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1370	call_pending (EV_A);	1514	call_pending (EV_A);
1371	}	1515	}
1372	#endif	1516	#endif
1373		1517
1374	/* queue check watchers (and execute them) */	1518	/* queue prepare watchers (and execute them) */
1375	if (expect_false (preparecnt))	1519	if (expect_false (preparecnt))
1376	{	1520	{
1377	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1521	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1378	call_pending (EV_A);	1522	call_pending (EV_A);
1379	}	1523	}
…		…
1388	/* update fd-related kernel structures */	1532	/* update fd-related kernel structures */
1389	fd_reify (EV_A);	1533	fd_reify (EV_A);
1390		1534
1391	/* calculate blocking time */	1535	/* calculate blocking time */
1392	{	1536	{
1393	ev_tstamp block;	1537	ev_tstamp waittime = 0.;
		1538	ev_tstamp sleeptime = 0.;
1394		1539
1395	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idlecnt \|\| !activecnt))	1540	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1396	block = 0.; /* do not block at all */
1397	else
1398	{	1541	{
1399	/* update time to cancel out callback processing overhead */	1542	/* update time to cancel out callback processing overhead */
1400	#if EV_USE_MONOTONIC
1401	if (expect_true (have_monotonic))
1402	time_update_monotonic (EV_A);	1543	time_update (EV_A_ 1e100);
1403	else
1404	#endif
1405	{
1406	ev_rt_now = ev_time ();
1407	mn_now = ev_rt_now;
1408	}
1409		1544
1410	block = MAX_BLOCKTIME;	1545	waittime = MAX_BLOCKTIME;
1411		1546
1412	if (timercnt)	1547	if (timercnt)
1413	{	1548	{
1414	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1549	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1415	if (block > to) block = to;	1550	if (waittime > to) waittime = to;
1416	}	1551	}
1417		1552
1418	#if EV_PERIODIC_ENABLE	1553	#if EV_PERIODIC_ENABLE
1419	if (periodiccnt)	1554	if (periodiccnt)
1420	{	1555	{
1421	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1556	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1422	if (block > to) block = to;	1557	if (waittime > to) waittime = to;
1423	}	1558	}
1424	#endif	1559	#endif
1425		1560
1426	if (expect_false (block < 0.)) block = 0.;	1561	if (expect_false (waittime < timeout_blocktime))
		1562	waittime = timeout_blocktime;
		1563
		1564	sleeptime = waittime - backend_fudge;
		1565
		1566	if (expect_true (sleeptime > io_blocktime))
		1567	sleeptime = io_blocktime;
		1568
		1569	if (sleeptime)
		1570	{
		1571	ev_sleep (sleeptime);
		1572	waittime -= sleeptime;
		1573	}
1427	}	1574	}
1428		1575
1429	++loop_count;	1576	++loop_count;
1430	backend_poll (EV_A_ block);	1577	backend_poll (EV_A_ waittime);
		1578
		1579	/* update ev_rt_now, do magic */
		1580	time_update (EV_A_ waittime + sleeptime);
1431	}	1581	}
1432
1433	/* update ev_rt_now, do magic */
1434	time_update (EV_A);
1435		1582
1436	/* queue pending timers and reschedule them */	1583	/* queue pending timers and reschedule them */
1437	timers_reify (EV_A); /* relative timers called last */	1584	timers_reify (EV_A); /* relative timers called last */
1438	#if EV_PERIODIC_ENABLE	1585	#if EV_PERIODIC_ENABLE
1439	periodics_reify (EV_A); /* absolute timers called first */	1586	periodics_reify (EV_A); /* absolute timers called first */
1440	#endif	1587	#endif
1441		1588
		1589	#if EV_IDLE_ENABLE
1442	/* queue idle watchers unless other events are pending */	1590	/* queue idle watchers unless other events are pending */
1443	if (idlecnt && !any_pending (EV_A))	1591	idle_reify (EV_A);
1444	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1592	#endif
1445		1593
1446	/* queue check watchers, to be executed first */	1594	/* queue check watchers, to be executed first */
1447	if (expect_false (checkcnt))	1595	if (expect_false (checkcnt))
1448	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1596	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1449		1597
…		…
1485	head = &(*head)->next;	1633	head = &(*head)->next;
1486	}	1634	}
1487	}	1635	}
1488		1636
1489	void inline_speed	1637	void inline_speed
1490	ev_clear_pending (EV_P_ W w)	1638	clear_pending (EV_P_ W w)
1491	{	1639	{
1492	if (w->pending)	1640	if (w->pending)
1493	{	1641	{
1494	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1642	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1495	w->pending = 0;	1643	w->pending = 0;
1496	}	1644	}
1497	}	1645	}
1498		1646
		1647	int
		1648	ev_clear_pending (EV_P_ void *w)
		1649	{
		1650	W w_ = (W)w;
		1651	int pending = w_->pending;
		1652
		1653	if (expect_true (pending))
		1654	{
		1655	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1656	w_->pending = 0;
		1657	p->w = 0;
		1658	return p->events;
		1659	}
		1660	else
		1661	return 0;
		1662	}
		1663
		1664	void inline_size
		1665	pri_adjust (EV_P_ W w)
		1666	{
		1667	int pri = w->priority;
		1668	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1669	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1670	w->priority = pri;
		1671	}
		1672
1499	void inline_speed	1673	void inline_speed
1500	ev_start (EV_P_ W w, int active)	1674	ev_start (EV_P_ W w, int active)
1501	{	1675	{
1502	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1676	pri_adjust (EV_A_ w);
1503	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1504
1505	w->active = active;	1677	w->active = active;
1506	ev_ref (EV_A);	1678	ev_ref (EV_A);
1507	}	1679	}
1508		1680
1509	void inline_size	1681	void inline_size
…		…
1513	w->active = 0;	1685	w->active = 0;
1514	}	1686	}
1515		1687
1516	/*****************************************************************************/	1688	/*****************************************************************************/
1517		1689
1518	void	1690	void noinline
1519	ev_io_start (EV_P_ ev_io *w)	1691	ev_io_start (EV_P_ ev_io *w)
1520	{	1692	{
1521	int fd = w->fd;	1693	int fd = w->fd;
1522		1694
1523	if (expect_false (ev_is_active (w)))	1695	if (expect_false (ev_is_active (w)))
…		…
1525		1697
1526	assert (("ev_io_start called with negative fd", fd >= 0));	1698	assert (("ev_io_start called with negative fd", fd >= 0));
1527		1699
1528	ev_start (EV_A_ (W)w, 1);	1700	ev_start (EV_A_ (W)w, 1);
1529	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1701	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1530	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1702	wlist_add (&anfds[fd].head, (WL)w);
1531		1703
1532	fd_change (EV_A_ fd);	1704	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1705	w->events &= ~EV_IOFDSET;
1533	}	1706	}
1534		1707
1535	void	1708	void noinline
1536	ev_io_stop (EV_P_ ev_io *w)	1709	ev_io_stop (EV_P_ ev_io *w)
1537	{	1710	{
1538	ev_clear_pending (EV_A_ (W)w);	1711	clear_pending (EV_A_ (W)w);
1539	if (expect_false (!ev_is_active (w)))	1712	if (expect_false (!ev_is_active (w)))
1540	return;	1713	return;
1541		1714
1542	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1715	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1543		1716
1544	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1717	wlist_del (&anfds[w->fd].head, (WL)w);
1545	ev_stop (EV_A_ (W)w);	1718	ev_stop (EV_A_ (W)w);
1546		1719
1547	fd_change (EV_A_ w->fd);	1720	fd_change (EV_A_ w->fd, 1);
1548	}	1721	}
1549		1722
1550	void	1723	void noinline
1551	ev_timer_start (EV_P_ ev_timer *w)	1724	ev_timer_start (EV_P_ ev_timer *w)
1552	{	1725	{
1553	if (expect_false (ev_is_active (w)))	1726	if (expect_false (ev_is_active (w)))
1554	return;	1727	return;
1555		1728
1556	((WT)w)->at += mn_now;	1729	((WT)w)->at += mn_now;
1557		1730
1558	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1731	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1559		1732
1560	ev_start (EV_A_ (W)w, ++timercnt);	1733	ev_start (EV_A_ (W)w, ++timercnt);
1561	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1734	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1562	timers [timercnt - 1] = w;	1735	timers [timercnt - 1] = (WT)w;
1563	upheap ((WT *)timers, timercnt - 1);	1736	upheap (timers, timercnt - 1);
1564		1737
1565	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1738	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1566	}	1739	}
1567		1740
1568	void	1741	void noinline
1569	ev_timer_stop (EV_P_ ev_timer *w)	1742	ev_timer_stop (EV_P_ ev_timer *w)
1570	{	1743	{
1571	ev_clear_pending (EV_A_ (W)w);	1744	clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))	1745	if (expect_false (!ev_is_active (w)))
1573	return;	1746	return;
1574		1747
1575	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1748	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1576		1749
1577	{	1750	{
1578	int active = ((W)w)->active;	1751	int active = ((W)w)->active;
1579		1752
1580	if (expect_true (--active < --timercnt))	1753	if (expect_true (--active < --timercnt))
1581	{	1754	{
1582	timers [active] = timers [timercnt];	1755	timers [active] = timers [timercnt];
1583	adjustheap ((WT *)timers, timercnt, active);	1756	adjustheap (timers, timercnt, active);
1584	}	1757	}
1585	}	1758	}
1586		1759
1587	((WT)w)->at -= mn_now;	1760	((WT)w)->at -= mn_now;
1588		1761
1589	ev_stop (EV_A_ (W)w);	1762	ev_stop (EV_A_ (W)w);
1590	}	1763	}
1591		1764
1592	void	1765	void noinline
1593	ev_timer_again (EV_P_ ev_timer *w)	1766	ev_timer_again (EV_P_ ev_timer *w)
1594	{	1767	{
1595	if (ev_is_active (w))	1768	if (ev_is_active (w))
1596	{	1769	{
1597	if (w->repeat)	1770	if (w->repeat)
1598	{	1771	{
1599	((WT)w)->at = mn_now + w->repeat;	1772	((WT)w)->at = mn_now + w->repeat;
1600	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1773	adjustheap (timers, timercnt, ((W)w)->active - 1);
1601	}	1774	}
1602	else	1775	else
1603	ev_timer_stop (EV_A_ w);	1776	ev_timer_stop (EV_A_ w);
1604	}	1777	}
1605	else if (w->repeat)	1778	else if (w->repeat)
…		…
1608	ev_timer_start (EV_A_ w);	1781	ev_timer_start (EV_A_ w);
1609	}	1782	}
1610	}	1783	}
1611		1784
1612	#if EV_PERIODIC_ENABLE	1785	#if EV_PERIODIC_ENABLE
1613	void	1786	void noinline
1614	ev_periodic_start (EV_P_ ev_periodic *w)	1787	ev_periodic_start (EV_P_ ev_periodic *w)
1615	{	1788	{
1616	if (expect_false (ev_is_active (w)))	1789	if (expect_false (ev_is_active (w)))
1617	return;	1790	return;
1618		1791
…		…
1620	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1793	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1621	else if (w->interval)	1794	else if (w->interval)
1622	{	1795	{
1623	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1796	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1624	/* this formula differs from the one in periodic_reify because we do not always round up */	1797	/* this formula differs from the one in periodic_reify because we do not always round up */
1625	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1798	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1626	}	1799	}
		1800	else
		1801	((WT)w)->at = w->offset;
1627		1802
1628	ev_start (EV_A_ (W)w, ++periodiccnt);	1803	ev_start (EV_A_ (W)w, ++periodiccnt);
1629	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1804	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1630	periodics [periodiccnt - 1] = w;	1805	periodics [periodiccnt - 1] = (WT)w;
1631	upheap ((WT *)periodics, periodiccnt - 1);	1806	upheap (periodics, periodiccnt - 1);
1632		1807
1633	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1808	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1634	}	1809	}
1635		1810
1636	void	1811	void noinline
1637	ev_periodic_stop (EV_P_ ev_periodic *w)	1812	ev_periodic_stop (EV_P_ ev_periodic *w)
1638	{	1813	{
1639	ev_clear_pending (EV_A_ (W)w);	1814	clear_pending (EV_A_ (W)w);
1640	if (expect_false (!ev_is_active (w)))	1815	if (expect_false (!ev_is_active (w)))
1641	return;	1816	return;
1642		1817
1643	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1818	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1644		1819
1645	{	1820	{
1646	int active = ((W)w)->active;	1821	int active = ((W)w)->active;
1647		1822
1648	if (expect_true (--active < --periodiccnt))	1823	if (expect_true (--active < --periodiccnt))
1649	{	1824	{
1650	periodics [active] = periodics [periodiccnt];	1825	periodics [active] = periodics [periodiccnt];
1651	adjustheap ((WT *)periodics, periodiccnt, active);	1826	adjustheap (periodics, periodiccnt, active);
1652	}	1827	}
1653	}	1828	}
1654		1829
1655	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1656	}	1831	}
1657		1832
1658	void	1833	void noinline
1659	ev_periodic_again (EV_P_ ev_periodic *w)	1834	ev_periodic_again (EV_P_ ev_periodic *w)
1660	{	1835	{
1661	/* TODO: use adjustheap and recalculation */	1836	/* TODO: use adjustheap and recalculation */
1662	ev_periodic_stop (EV_A_ w);	1837	ev_periodic_stop (EV_A_ w);
1663	ev_periodic_start (EV_A_ w);	1838	ev_periodic_start (EV_A_ w);
…		…
1666		1841
1667	#ifndef SA_RESTART	1842	#ifndef SA_RESTART
1668	# define SA_RESTART 0	1843	# define SA_RESTART 0
1669	#endif	1844	#endif
1670		1845
1671	void	1846	void noinline
1672	ev_signal_start (EV_P_ ev_signal *w)	1847	ev_signal_start (EV_P_ ev_signal *w)
1673	{	1848	{
1674	#if EV_MULTIPLICITY	1849	#if EV_MULTIPLICITY
1675	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1850	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1676	#endif	1851	#endif
1677	if (expect_false (ev_is_active (w)))	1852	if (expect_false (ev_is_active (w)))
1678	return;	1853	return;
1679		1854
1680	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1855	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1681		1856
		1857	{
		1858	#ifndef _WIN32
		1859	sigset_t full, prev;
		1860	sigfillset (&full);
		1861	sigprocmask (SIG_SETMASK, &full, &prev);
		1862	#endif
		1863
		1864	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1865
		1866	#ifndef _WIN32
		1867	sigprocmask (SIG_SETMASK, &prev, 0);
		1868	#endif
		1869	}
		1870
1682	ev_start (EV_A_ (W)w, 1);	1871	ev_start (EV_A_ (W)w, 1);
1683	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1684	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1872	wlist_add (&signals [w->signum - 1].head, (WL)w);
1685		1873
1686	if (!((WL)w)->next)	1874	if (!((WL)w)->next)
1687	{	1875	{
1688	#if _WIN32	1876	#if _WIN32
1689	signal (w->signum, sighandler);	1877	signal (w->signum, sighandler);
…		…
1695	sigaction (w->signum, &sa, 0);	1883	sigaction (w->signum, &sa, 0);
1696	#endif	1884	#endif
1697	}	1885	}
1698	}	1886	}
1699		1887
1700	void	1888	void noinline
1701	ev_signal_stop (EV_P_ ev_signal *w)	1889	ev_signal_stop (EV_P_ ev_signal *w)
1702	{	1890	{
1703	ev_clear_pending (EV_A_ (W)w);	1891	clear_pending (EV_A_ (W)w);
1704	if (expect_false (!ev_is_active (w)))	1892	if (expect_false (!ev_is_active (w)))
1705	return;	1893	return;
1706		1894
1707	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1895	wlist_del (&signals [w->signum - 1].head, (WL)w);
1708	ev_stop (EV_A_ (W)w);	1896	ev_stop (EV_A_ (W)w);
1709		1897
1710	if (!signals [w->signum - 1].head)	1898	if (!signals [w->signum - 1].head)
1711	signal (w->signum, SIG_DFL);	1899	signal (w->signum, SIG_DFL);
1712	}	1900	}
…		…
1719	#endif	1907	#endif
1720	if (expect_false (ev_is_active (w)))	1908	if (expect_false (ev_is_active (w)))
1721	return;	1909	return;
1722		1910
1723	ev_start (EV_A_ (W)w, 1);	1911	ev_start (EV_A_ (W)w, 1);
1724	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1912	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1725	}	1913	}
1726		1914
1727	void	1915	void
1728	ev_child_stop (EV_P_ ev_child *w)	1916	ev_child_stop (EV_P_ ev_child *w)
1729	{	1917	{
1730	ev_clear_pending (EV_A_ (W)w);	1918	clear_pending (EV_A_ (W)w);
1731	if (expect_false (!ev_is_active (w)))	1919	if (expect_false (!ev_is_active (w)))
1732	return;	1920	return;
1733		1921
1734	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1922	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1735	ev_stop (EV_A_ (W)w);	1923	ev_stop (EV_A_ (W)w);
1736	}	1924	}
1737		1925
1738	#if EV_STAT_ENABLE	1926	#if EV_STAT_ENABLE
1739		1927
…		…
1971	}	2159	}
1972		2160
1973	void	2161	void
1974	ev_stat_stop (EV_P_ ev_stat *w)	2162	ev_stat_stop (EV_P_ ev_stat *w)
1975	{	2163	{
1976	ev_clear_pending (EV_A_ (W)w);	2164	clear_pending (EV_A_ (W)w);
1977	if (expect_false (!ev_is_active (w)))	2165	if (expect_false (!ev_is_active (w)))
1978	return;	2166	return;
1979		2167
1980	#if EV_USE_INOTIFY	2168	#if EV_USE_INOTIFY
1981	infy_del (EV_A_ w);	2169	infy_del (EV_A_ w);
…		…
1984		2172
1985	ev_stop (EV_A_ (W)w);	2173	ev_stop (EV_A_ (W)w);
1986	}	2174	}
1987	#endif	2175	#endif
1988		2176
		2177	#if EV_IDLE_ENABLE
1989	void	2178	void
1990	ev_idle_start (EV_P_ ev_idle *w)	2179	ev_idle_start (EV_P_ ev_idle *w)
1991	{	2180	{
1992	if (expect_false (ev_is_active (w)))	2181	if (expect_false (ev_is_active (w)))
1993	return;	2182	return;
1994		2183
		2184	pri_adjust (EV_A_ (W)w);
		2185
		2186	{
		2187	int active = ++idlecnt [ABSPRI (w)];
		2188
		2189	++idleall;
1995	ev_start (EV_A_ (W)w, ++idlecnt);	2190	ev_start (EV_A_ (W)w, active);
		2191
1996	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1997	idles [idlecnt - 1] = w;	2193	idles [ABSPRI (w)][active - 1] = w;
		2194	}
1998	}	2195	}
1999		2196
2000	void	2197	void
2001	ev_idle_stop (EV_P_ ev_idle *w)	2198	ev_idle_stop (EV_P_ ev_idle *w)
2002	{	2199	{
2003	ev_clear_pending (EV_A_ (W)w);	2200	clear_pending (EV_A_ (W)w);
2004	if (expect_false (!ev_is_active (w)))	2201	if (expect_false (!ev_is_active (w)))
2005	return;	2202	return;
2006		2203
2007	{	2204	{
2008	int active = ((W)w)->active;	2205	int active = ((W)w)->active;
2009	idles [active - 1] = idles [--idlecnt];	2206
		2207	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2010	((W)idles [active - 1])->active = active;	2208	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2209
		2210	ev_stop (EV_A_ (W)w);
		2211	--idleall;
2011	}	2212	}
2012
2013	ev_stop (EV_A_ (W)w);
2014	}	2213	}
		2214	#endif
2015		2215
2016	void	2216	void
2017	ev_prepare_start (EV_P_ ev_prepare *w)	2217	ev_prepare_start (EV_P_ ev_prepare *w)
2018	{	2218	{
2019	if (expect_false (ev_is_active (w)))	2219	if (expect_false (ev_is_active (w)))
…		…
2025	}	2225	}
2026		2226
2027	void	2227	void
2028	ev_prepare_stop (EV_P_ ev_prepare *w)	2228	ev_prepare_stop (EV_P_ ev_prepare *w)
2029	{	2229	{
2030	ev_clear_pending (EV_A_ (W)w);	2230	clear_pending (EV_A_ (W)w);
2031	if (expect_false (!ev_is_active (w)))	2231	if (expect_false (!ev_is_active (w)))
2032	return;	2232	return;
2033		2233
2034	{	2234	{
2035	int active = ((W)w)->active;	2235	int active = ((W)w)->active;
…		…
2052	}	2252	}
2053		2253
2054	void	2254	void
2055	ev_check_stop (EV_P_ ev_check *w)	2255	ev_check_stop (EV_P_ ev_check *w)
2056	{	2256	{
2057	ev_clear_pending (EV_A_ (W)w);	2257	clear_pending (EV_A_ (W)w);
2058	if (expect_false (!ev_is_active (w)))	2258	if (expect_false (!ev_is_active (w)))
2059	return;	2259	return;
2060		2260
2061	{	2261	{
2062	int active = ((W)w)->active;	2262	int active = ((W)w)->active;
…		…
2069		2269
2070	#if EV_EMBED_ENABLE	2270	#if EV_EMBED_ENABLE
2071	void noinline	2271	void noinline
2072	ev_embed_sweep (EV_P_ ev_embed *w)	2272	ev_embed_sweep (EV_P_ ev_embed *w)
2073	{	2273	{
2074	ev_loop (w->loop, EVLOOP_NONBLOCK);	2274	ev_loop (w->other, EVLOOP_NONBLOCK);
2075	}	2275	}
2076		2276
2077	static void	2277	static void
2078	embed_cb (EV_P_ ev_io *io, int revents)	2278	embed_io_cb (EV_P_ ev_io *io, int revents)
2079	{	2279	{
2080	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2280	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2081		2281
2082	if (ev_cb (w))	2282	if (ev_cb (w))
2083	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2283	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2084	else	2284	else
2085	ev_embed_sweep (loop, w);	2285	ev_loop (w->other, EVLOOP_NONBLOCK);
2086	}	2286	}
		2287
		2288	static void
		2289	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2290	{
		2291	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2292
		2293	{
		2294	struct ev_loop *loop = w->other;
		2295
		2296	while (fdchangecnt)
		2297	{
		2298	fd_reify (EV_A);
		2299	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2300	}
		2301	}
		2302	}
		2303
		2304	#if 0
		2305	static void
		2306	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2307	{
		2308	ev_idle_stop (EV_A_ idle);
		2309	}
		2310	#endif
2087		2311
2088	void	2312	void
2089	ev_embed_start (EV_P_ ev_embed *w)	2313	ev_embed_start (EV_P_ ev_embed *w)
2090	{	2314	{
2091	if (expect_false (ev_is_active (w)))	2315	if (expect_false (ev_is_active (w)))
2092	return;	2316	return;
2093		2317
2094	{	2318	{
2095	struct ev_loop *loop = w->loop;	2319	struct ev_loop *loop = w->other;
2096	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2320	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2097	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2321	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2098	}	2322	}
2099		2323
2100	ev_set_priority (&w->io, ev_priority (w));	2324	ev_set_priority (&w->io, ev_priority (w));
2101	ev_io_start (EV_A_ &w->io);	2325	ev_io_start (EV_A_ &w->io);
2102		2326
		2327	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2328	ev_set_priority (&w->prepare, EV_MINPRI);
		2329	ev_prepare_start (EV_A_ &w->prepare);
		2330
		2331	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2332
2103	ev_start (EV_A_ (W)w, 1);	2333	ev_start (EV_A_ (W)w, 1);
2104	}	2334	}
2105		2335
2106	void	2336	void
2107	ev_embed_stop (EV_P_ ev_embed *w)	2337	ev_embed_stop (EV_P_ ev_embed *w)
2108	{	2338	{
2109	ev_clear_pending (EV_A_ (W)w);	2339	clear_pending (EV_A_ (W)w);
2110	if (expect_false (!ev_is_active (w)))	2340	if (expect_false (!ev_is_active (w)))
2111	return;	2341	return;
2112		2342
2113	ev_io_stop (EV_A_ &w->io);	2343	ev_io_stop (EV_A_ &w->io);
		2344	ev_prepare_stop (EV_A_ &w->prepare);
2114		2345
2115	ev_stop (EV_A_ (W)w);	2346	ev_stop (EV_A_ (W)w);
2116	}	2347	}
2117	#endif	2348	#endif
2118		2349
…		…
2129	}	2360	}
2130		2361
2131	void	2362	void
2132	ev_fork_stop (EV_P_ ev_fork *w)	2363	ev_fork_stop (EV_P_ ev_fork *w)
2133	{	2364	{
2134	ev_clear_pending (EV_A_ (W)w);	2365	clear_pending (EV_A_ (W)w);
2135	if (expect_false (!ev_is_active (w)))	2366	if (expect_false (!ev_is_active (w)))
2136	return;	2367	return;
2137		2368
2138	{	2369	{
2139	int active = ((W)w)->active;	2370	int active = ((W)w)->active;
…		…
2207	ev_timer_set (&once->to, timeout, 0.);	2438	ev_timer_set (&once->to, timeout, 0.);
2208	ev_timer_start (EV_A_ &once->to);	2439	ev_timer_start (EV_A_ &once->to);
2209	}	2440	}
2210	}	2441	}
2211		2442
		2443	#if EV_MULTIPLICITY
		2444	#include "ev_wrap.h"
		2445	#endif
		2446
2212	#ifdef __cplusplus	2447	#ifdef __cplusplus
2213	}	2448	}
2214	#endif	2449	#endif
2215		2450

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Comparing libev/ev.c (file contents): Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC vs. Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.162 by root, Mon Dec 3 13:41:24 2007 UTC vs.
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC