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

Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.205 by root, Sun Jan 20 15:37:03 2008 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
		443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
401	int inline_size	470	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	471	array_nextsize (int elem, int cur, int cnt)
403	{	472	{
404	int ncur = cur + 1;	473	int ncur = cur + 1;
405		474
…		…
417	}	486	}
418		487
419	return ncur;	488	return ncur;
420	}	489	}
421		490
422	inline_speed void *	491	static noinline void *
423	array_realloc (int elem, void base, int cur, int cnt)	492	array_realloc (int elem, void base, int cur, int cnt)
424	{	493	{
425	cur = array_nextsize (elem, cur, cnt);	494	cur = array_nextsize (elem, cur, cnt);
426	return ev_realloc (base, elem * *cur);	495	return ev_realloc (base, elem * *cur);
427	}	496	}
…		…
452		521
453	void noinline	522	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	523	ev_feed_event (EV_P_ void *w, int revents)
455	{	524	{
456	W w_ = (W)w;	525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
457		527
458	if (expect_false (w_->pending))	528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events \|= revents;
		530	else
459	{	531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	535	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	536	}
463
464	w_->pending = ++pendingcnt [ABSPRI (w_)];
465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468	}	537	}
469		538
470	void inline_size	539	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	541	{
473	int i;	542	int i;
474		543
475	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
507	}	576	}
508		577
509	void	578	void
510	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
511	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
512	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
513	}	583	}
514		584
515	void inline_size	585	void inline_size
516	fd_reify (EV_P)	586	fd_reify (EV_P)
517	{	587	{
…		…
521	{	591	{
522	int fd = fdchanges [i];	592	int fd = fdchanges [i];
523	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
524	ev_io *w;	594	ev_io *w;
525		595
526	int events = 0;	596	unsigned char events = 0;
527		597
528	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	598	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
529	events \|= w->events;	599	events \|= (unsigned char)w->events;
530		600
531	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
532	if (events)	602	if (events)
533	{	603	{
534	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
535	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537	}	611	}
538	#endif	612	#endif
539		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
540	anfd->reify = 0;	618	anfd->reify = 0;
541
542	backend_modify (EV_A_ fd, anfd->events, events);
543	anfd->events = events;	619	anfd->events = events;
		620
		621	if (o_events != events \|\| o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
544	}	624	}
545		625
546	fdchangecnt = 0;	626	fdchangecnt = 0;
547	}	627	}
548		628
549	void inline_size	629	void inline_size
550	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
551	{	631	{
552	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
553	return;
554
555	anfds [fd].reify = 1;	633	anfds [fd].reify \|= flags;
556		634
		635	if (expect_true (!reify))
		636	{
557	++fdchangecnt;	637	++fdchangecnt;
558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
560	}	641	}
561		642
562	void inline_speed	643	void inline_speed
563	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
564	{	645	{
…		…
615		696
616	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
617	if (anfds [fd].events)	698	if (anfds [fd].events)
618	{	699	{
619	anfds [fd].events = 0;	700	anfds [fd].events = 0;
620	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
621	}	702	}
622	}	703	}
623		704
624	/*****************************************************************************/	705	/*****************************************************************************/
625		706
626	void inline_speed	707	void inline_speed
627	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
628	{	709	{
629	WT w = heap [k];	710	WT w = heap [k];
630		711
631	while (k && heap [k >> 1]->at > w->at)	712	while (k)
632	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
633	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
634	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
635	k >>= 1;	721	k = p;
636	}	722	}
637		723
638	heap [k] = w;	724	heap [k] = w;
639	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
640
641	}	726	}
642		727
643	void inline_speed	728	void inline_speed
644	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
645	{	730	{
646	WT w = heap [k];	731	WT w = heap [k];
647		732
648	while (k < (N >> 1))	733	for (;;)
649	{	734	{
650	int j = k << 1;	735	int c = (k << 1) + 1;
651		736
652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
653	++j;
654
655	if (w->at <= heap [j]->at)
656	break;	738	break;
657		739
		740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		741	? 1 : 0;
		742
		743	if (w->at <= heap [c]->at)
		744	break;
		745
658	heap [k] = heap [j];	746	heap [k] = heap [c];
659	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
660	k = j;	749	k = c;
661	}	750	}
662		751
663	heap [k] = w;	752	heap [k] = w;
664	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
665	}	754	}
…		…
747	for (signum = signalmax; signum--; )	836	for (signum = signalmax; signum--; )
748	if (signals [signum].gotsig)	837	if (signals [signum].gotsig)
749	ev_feed_signal_event (EV_A_ signum + 1);	838	ev_feed_signal_event (EV_A_ signum + 1);
750	}	839	}
751		840
752	void inline_size	841	void inline_speed
753	fd_intern (int fd)	842	fd_intern (int fd)
754	{	843	{
755	#ifdef _WIN32	844	#ifdef _WIN32
756	int arg = 1;	845	int arg = 1;
757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	846	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
772	ev_unref (EV_A); /* child watcher should not keep loop alive */	861	ev_unref (EV_A); /* child watcher should not keep loop alive */
773	}	862	}
774		863
775	/*****************************************************************************/	864	/*****************************************************************************/
776		865
777	static ev_child *childs [EV_PID_HASHSIZE];	866	static WL childs [EV_PID_HASHSIZE];
778		867
779	#ifndef _WIN32	868	#ifndef _WIN32
780		869
781	static ev_signal childev;	870	static ev_signal childev;
782		871
…		…
786	ev_child *w;	875	ev_child *w;
787		876
788	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	877	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
789	if (w->pid == pid \|\| !w->pid)	878	if (w->pid == pid \|\| !w->pid)
790	{	879	{
791	ev_priority (w) = ev_priority (sw); /* need to do it now */	880	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
792	w->rpid = pid;	881	w->rpid = pid;
793	w->rstatus = status;	882	w->rstatus = status;
794	ev_feed_event (EV_A_ (W)w, EV_CHILD);	883	ev_feed_event (EV_A_ (W)w, EV_CHILD);
795	}	884	}
796	}	885	}
797		886
798	#ifndef WCONTINUED	887	#ifndef WCONTINUED
…		…
897	}	986	}
898		987
899	unsigned int	988	unsigned int
900	ev_embeddable_backends (void)	989	ev_embeddable_backends (void)
901	{	990	{
902	return EVBACKEND_EPOLL	991	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
903	\| EVBACKEND_KQUEUE	992
904	\| EVBACKEND_PORT;	993	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		994	/* please fix it and tell me how to detect the fix */
		995	flags &= ~EVBACKEND_EPOLL;
		996
		997	return flags;
905	}	998	}
906		999
907	unsigned int	1000	unsigned int
908	ev_backend (EV_P)	1001	ev_backend (EV_P)
909	{	1002	{
…		…
912		1005
913	unsigned int	1006	unsigned int
914	ev_loop_count (EV_P)	1007	ev_loop_count (EV_P)
915	{	1008	{
916	return loop_count;	1009	return loop_count;
		1010	}
		1011
		1012	void
		1013	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1014	{
		1015	io_blocktime = interval;
		1016	}
		1017
		1018	void
		1019	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1020	{
		1021	timeout_blocktime = interval;
917	}	1022	}
918		1023
919	static void noinline	1024	static void noinline
920	loop_init (EV_P_ unsigned int flags)	1025	loop_init (EV_P_ unsigned int flags)
921	{	1026	{
…		…
932	ev_rt_now = ev_time ();	1037	ev_rt_now = ev_time ();
933	mn_now = get_clock ();	1038	mn_now = get_clock ();
934	now_floor = mn_now;	1039	now_floor = mn_now;
935	rtmn_diff = ev_rt_now - mn_now;	1040	rtmn_diff = ev_rt_now - mn_now;
936		1041
		1042	io_blocktime = 0.;
		1043	timeout_blocktime = 0.;
		1044
937	/* pid check not overridable via env */	1045	/* pid check not overridable via env */
938	#ifndef _WIN32	1046	#ifndef _WIN32
939	if (flags & EVFLAG_FORKCHECK)	1047	if (flags & EVFLAG_FORKCHECK)
940	curpid = getpid ();	1048	curpid = getpid ();
941	#endif	1049	#endif
…		…
1003	#if EV_USE_SELECT	1111	#if EV_USE_SELECT
1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1112	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1005	#endif	1113	#endif
1006		1114
1007	for (i = NUMPRI; i--; )	1115	for (i = NUMPRI; i--; )
		1116	{
1008	array_free (pending, [i]);	1117	array_free (pending, [i]);
		1118	#if EV_IDLE_ENABLE
		1119	array_free (idle, [i]);
		1120	#endif
		1121	}
		1122
		1123	ev_free (anfds); anfdmax = 0;
1009		1124
1010	/* have to use the microsoft-never-gets-it-right macro */	1125	/* have to use the microsoft-never-gets-it-right macro */
1011	array_free (fdchange, EMPTY0);	1126	array_free (fdchange, EMPTY);
1012	array_free (timer, EMPTY0);	1127	array_free (timer, EMPTY);
1013	#if EV_PERIODIC_ENABLE	1128	#if EV_PERIODIC_ENABLE
1014	array_free (periodic, EMPTY0);	1129	array_free (periodic, EMPTY);
1015	#endif	1130	#endif
		1131	#if EV_FORK_ENABLE
1016	array_free (idle, EMPTY0);	1132	array_free (fork, EMPTY);
		1133	#endif
1017	array_free (prepare, EMPTY0);	1134	array_free (prepare, EMPTY);
1018	array_free (check, EMPTY0);	1135	array_free (check, EMPTY);
1019		1136
1020	backend = 0;	1137	backend = 0;
1021	}	1138	}
1022		1139
1023	void inline_size infy_fork (EV_P);	1140	void inline_size infy_fork (EV_P);
…		…
1049		1166
1050	while (pipe (sigpipe))	1167	while (pipe (sigpipe))
1051	syserr ("(libev) error creating pipe");	1168	syserr ("(libev) error creating pipe");
1052		1169
1053	siginit (EV_A);	1170	siginit (EV_A);
		1171	sigcb (EV_A_ &sigev, EV_READ);
1054	}	1172	}
1055		1173
1056	postfork = 0;	1174	postfork = 0;
1057	}	1175	}
1058		1176
…		…
1080	}	1198	}
1081		1199
1082	void	1200	void
1083	ev_loop_fork (EV_P)	1201	ev_loop_fork (EV_P)
1084	{	1202	{
1085	postfork = 1;	1203	postfork = 1; /* must be in line with ev_default_fork */
1086	}	1204	}
1087		1205
1088	#endif	1206	#endif
1089		1207
1090	#if EV_MULTIPLICITY	1208	#if EV_MULTIPLICITY
…		…
1154	#if EV_MULTIPLICITY	1272	#if EV_MULTIPLICITY
1155	struct ev_loop *loop = ev_default_loop_ptr;	1273	struct ev_loop *loop = ev_default_loop_ptr;
1156	#endif	1274	#endif
1157		1275
1158	if (backend)	1276	if (backend)
1159	postfork = 1;	1277	postfork = 1; /* must be in line with ev_loop_fork */
1160	}	1278	}
1161		1279
1162	/*****************************************************************************/	1280	/*****************************************************************************/
1163		1281
1164	int inline_size	1282	void
1165	any_pending (EV_P)	1283	ev_invoke (EV_P_ void *w, int revents)
1166	{	1284	{
1167	int pri;	1285	EV_CB_INVOKE ((W)w, revents);
1168
1169	for (pri = NUMPRI; pri--; )
1170	if (pendingcnt [pri])
1171	return 1;
1172
1173	return 0;
1174	}	1286	}
1175		1287
1176	void inline_speed	1288	void inline_speed
1177	call_pending (EV_P)	1289	call_pending (EV_P)
1178	{	1290	{
…		…
1196	void inline_size	1308	void inline_size
1197	timers_reify (EV_P)	1309	timers_reify (EV_P)
1198	{	1310	{
1199	while (timercnt && ((WT)timers [0])->at <= mn_now)	1311	while (timercnt && ((WT)timers [0])->at <= mn_now)
1200	{	1312	{
1201	ev_timer *w = timers [0];	1313	ev_timer w = (ev_timer )timers [0];
1202		1314
1203	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1315	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1204		1316
1205	/* first reschedule or stop timer */	1317	/* first reschedule or stop timer */
1206	if (w->repeat)	1318	if (w->repeat)
…		…
1209		1321
1210	((WT)w)->at += w->repeat;	1322	((WT)w)->at += w->repeat;
1211	if (((WT)w)->at < mn_now)	1323	if (((WT)w)->at < mn_now)
1212	((WT)w)->at = mn_now;	1324	((WT)w)->at = mn_now;
1213		1325
1214	downheap ((WT *)timers, timercnt, 0);	1326	downheap (timers, timercnt, 0);
1215	}	1327	}
1216	else	1328	else
1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1329	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218		1330
1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1331	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1224	void inline_size	1336	void inline_size
1225	periodics_reify (EV_P)	1337	periodics_reify (EV_P)
1226	{	1338	{
1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1339	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1228	{	1340	{
1229	ev_periodic *w = periodics [0];	1341	ev_periodic w = (ev_periodic )periodics [0];
1230		1342
1231	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1343	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1232		1344
1233	/* first reschedule or stop timer */	1345	/* first reschedule or stop timer */
1234	if (w->reschedule_cb)	1346	if (w->reschedule_cb)
1235	{	1347	{
1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1348	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1349	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238	downheap ((WT *)periodics, periodiccnt, 0);	1350	downheap (periodics, periodiccnt, 0);
1239	}	1351	}
1240	else if (w->interval)	1352	else if (w->interval)
1241	{	1353	{
1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1354	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1355	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1356	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1244	downheap ((WT *)periodics, periodiccnt, 0);	1357	downheap (periodics, periodiccnt, 0);
1245	}	1358	}
1246	else	1359	else
1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1360	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248		1361
1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1362	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1256	int i;	1369	int i;
1257		1370
1258	/* adjust periodics after time jump */	1371	/* adjust periodics after time jump */
1259	for (i = 0; i < periodiccnt; ++i)	1372	for (i = 0; i < periodiccnt; ++i)
1260	{	1373	{
1261	ev_periodic *w = periodics [i];	1374	ev_periodic w = (ev_periodic )periodics [i];
1262		1375
1263	if (w->reschedule_cb)	1376	if (w->reschedule_cb)
1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1377	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1265	else if (w->interval)	1378	else if (w->interval)
1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1379	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1267	}	1380	}
1268		1381
1269	/* now rebuild the heap */	1382	/* now rebuild the heap */
1270	for (i = periodiccnt >> 1; i--; )	1383	for (i = periodiccnt >> 1; i--; )
1271	downheap ((WT *)periodics, periodiccnt, i);	1384	downheap (periodics, periodiccnt, i);
1272	}	1385	}
1273	#endif	1386	#endif
1274		1387
		1388	#if EV_IDLE_ENABLE
1275	int inline_size	1389	void inline_size
1276	time_update_monotonic (EV_P)	1390	idle_reify (EV_P)
1277	{	1391	{
		1392	if (expect_false (idleall))
		1393	{
		1394	int pri;
		1395
		1396	for (pri = NUMPRI; pri--; )
		1397	{
		1398	if (pendingcnt [pri])
		1399	break;
		1400
		1401	if (idlecnt [pri])
		1402	{
		1403	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1404	break;
		1405	}
		1406	}
		1407	}
		1408	}
		1409	#endif
		1410
		1411	void inline_speed
		1412	time_update (EV_P_ ev_tstamp max_block)
		1413	{
		1414	int i;
		1415
		1416	#if EV_USE_MONOTONIC
		1417	if (expect_true (have_monotonic))
		1418	{
		1419	ev_tstamp odiff = rtmn_diff;
		1420
1278	mn_now = get_clock ();	1421	mn_now = get_clock ();
1279		1422
		1423	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1424	/* interpolate in the meantime */
1280	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1425	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1281	{	1426	{
1282	ev_rt_now = rtmn_diff + mn_now;	1427	ev_rt_now = rtmn_diff + mn_now;
1283	return 0;	1428	return;
1284	}	1429	}
1285	else	1430
1286	{
1287	now_floor = mn_now;	1431	now_floor = mn_now;
1288	ev_rt_now = ev_time ();	1432	ev_rt_now = ev_time ();
1289	return 1;
1290	}
1291	}
1292		1433
1293	void inline_size	1434	/* loop a few times, before making important decisions.
1294	time_update (EV_P)	1435	* on the choice of "4": one iteration isn't enough,
1295	{	1436	* in case we get preempted during the calls to
1296	int i;	1437	* ev_time and get_clock. a second call is almost guaranteed
1297		1438	* to succeed in that case, though. and looping a few more times
1298	#if EV_USE_MONOTONIC	1439	* doesn't hurt either as we only do this on time-jumps or
1299	if (expect_true (have_monotonic))	1440	* in the unlikely event of having been preempted here.
1300	{	1441	*/
1301	if (time_update_monotonic (EV_A))	1442	for (i = 4; --i; )
1302	{	1443	{
1303	ev_tstamp odiff = rtmn_diff;
1304
1305	/* loop a few times, before making important decisions.
1306	* on the choice of "4": one iteration isn't enough,
1307	* in case we get preempted during the calls to
1308	* ev_time and get_clock. a second call is almost guaranteed
1309	* to succeed in that case, though. and looping a few more times
1310	* doesn't hurt either as we only do this on time-jumps or
1311	* in the unlikely event of having been preempted here.
1312	*/
1313	for (i = 4; --i; )
1314	{
1315	rtmn_diff = ev_rt_now - mn_now;	1444	rtmn_diff = ev_rt_now - mn_now;
1316		1445
1317	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1446	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1318	return; /* all is well */	1447	return; /* all is well */
1319		1448
1320	ev_rt_now = ev_time ();	1449	ev_rt_now = ev_time ();
1321	mn_now = get_clock ();	1450	mn_now = get_clock ();
1322	now_floor = mn_now;	1451	now_floor = mn_now;
1323	}	1452	}
1324		1453
1325	# if EV_PERIODIC_ENABLE	1454	# if EV_PERIODIC_ENABLE
1326	periodics_reschedule (EV_A);	1455	periodics_reschedule (EV_A);
1327	# endif	1456	# endif
1328	/* no timer adjustment, as the monotonic clock doesn't jump */	1457	/* no timer adjustment, as the monotonic clock doesn't jump */
1329	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1458	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1330	}
1331	}	1459	}
1332	else	1460	else
1333	#endif	1461	#endif
1334	{	1462	{
1335	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1336		1464
1337	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1465	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1338	{	1466	{
1339	#if EV_PERIODIC_ENABLE	1467	#if EV_PERIODIC_ENABLE
1340	periodics_reschedule (EV_A);	1468	periodics_reschedule (EV_A);
1341	#endif	1469	#endif
1342
1343	/* adjust timers. this is easy, as the offset is the same for all of them */	1470	/* adjust timers. this is easy, as the offset is the same for all of them */
1344	for (i = 0; i < timercnt; ++i)	1471	for (i = 0; i < timercnt; ++i)
1345	((WT)timers [i])->at += ev_rt_now - mn_now;	1472	((WT)timers [i])->at += ev_rt_now - mn_now;
1346	}	1473	}
1347		1474
…		…
1391	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1518	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392	call_pending (EV_A);	1519	call_pending (EV_A);
1393	}	1520	}
1394	#endif	1521	#endif
1395		1522
1396	/* queue check watchers (and execute them) */	1523	/* queue prepare watchers (and execute them) */
1397	if (expect_false (preparecnt))	1524	if (expect_false (preparecnt))
1398	{	1525	{
1399	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1526	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1400	call_pending (EV_A);	1527	call_pending (EV_A);
1401	}	1528	}
…		…
1410	/* update fd-related kernel structures */	1537	/* update fd-related kernel structures */
1411	fd_reify (EV_A);	1538	fd_reify (EV_A);
1412		1539
1413	/* calculate blocking time */	1540	/* calculate blocking time */
1414	{	1541	{
1415	ev_tstamp block;	1542	ev_tstamp waittime = 0.;
		1543	ev_tstamp sleeptime = 0.;
1416		1544
1417	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idlecnt \|\| !activecnt))	1545	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1418	block = 0.; /* do not block at all */
1419	else
1420	{	1546	{
1421	/* update time to cancel out callback processing overhead */	1547	/* update time to cancel out callback processing overhead */
1422	#if EV_USE_MONOTONIC
1423	if (expect_true (have_monotonic))
1424	time_update_monotonic (EV_A);	1548	time_update (EV_A_ 1e100);
1425	else
1426	#endif
1427	{
1428	ev_rt_now = ev_time ();
1429	mn_now = ev_rt_now;
1430	}
1431		1549
1432	block = MAX_BLOCKTIME;	1550	waittime = MAX_BLOCKTIME;
1433		1551
1434	if (timercnt)	1552	if (timercnt)
1435	{	1553	{
1436	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1554	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1437	if (block > to) block = to;	1555	if (waittime > to) waittime = to;
1438	}	1556	}
1439		1557
1440	#if EV_PERIODIC_ENABLE	1558	#if EV_PERIODIC_ENABLE
1441	if (periodiccnt)	1559	if (periodiccnt)
1442	{	1560	{
1443	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1561	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1444	if (block > to) block = to;	1562	if (waittime > to) waittime = to;
1445	}	1563	}
1446	#endif	1564	#endif
1447		1565
1448	if (expect_false (block < 0.)) block = 0.;	1566	if (expect_false (waittime < timeout_blocktime))
		1567	waittime = timeout_blocktime;
		1568
		1569	sleeptime = waittime - backend_fudge;
		1570
		1571	if (expect_true (sleeptime > io_blocktime))
		1572	sleeptime = io_blocktime;
		1573
		1574	if (sleeptime)
		1575	{
		1576	ev_sleep (sleeptime);
		1577	waittime -= sleeptime;
		1578	}
1449	}	1579	}
1450		1580
1451	++loop_count;	1581	++loop_count;
1452	backend_poll (EV_A_ block);	1582	backend_poll (EV_A_ waittime);
		1583
		1584	/* update ev_rt_now, do magic */
		1585	time_update (EV_A_ waittime + sleeptime);
1453	}	1586	}
1454
1455	/* update ev_rt_now, do magic */
1456	time_update (EV_A);
1457		1587
1458	/* queue pending timers and reschedule them */	1588	/* queue pending timers and reschedule them */
1459	timers_reify (EV_A); /* relative timers called last */	1589	timers_reify (EV_A); /* relative timers called last */
1460	#if EV_PERIODIC_ENABLE	1590	#if EV_PERIODIC_ENABLE
1461	periodics_reify (EV_A); /* absolute timers called first */	1591	periodics_reify (EV_A); /* absolute timers called first */
1462	#endif	1592	#endif
1463		1593
		1594	#if EV_IDLE_ENABLE
1464	/* queue idle watchers unless other events are pending */	1595	/* queue idle watchers unless other events are pending */
1465	if (idlecnt && !any_pending (EV_A))	1596	idle_reify (EV_A);
1466	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1597	#endif
1467		1598
1468	/* queue check watchers, to be executed first */	1599	/* queue check watchers, to be executed first */
1469	if (expect_false (checkcnt))	1600	if (expect_false (checkcnt))
1470	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1601	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1471		1602
…		…
1507	head = &(*head)->next;	1638	head = &(*head)->next;
1508	}	1639	}
1509	}	1640	}
1510		1641
1511	void inline_speed	1642	void inline_speed
1512	ev_clear_pending (EV_P_ W w)	1643	clear_pending (EV_P_ W w)
1513	{	1644	{
1514	if (w->pending)	1645	if (w->pending)
1515	{	1646	{
1516	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1647	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1517	w->pending = 0;	1648	w->pending = 0;
1518	}	1649	}
1519	}	1650	}
1520		1651
		1652	int
		1653	ev_clear_pending (EV_P_ void *w)
		1654	{
		1655	W w_ = (W)w;
		1656	int pending = w_->pending;
		1657
		1658	if (expect_true (pending))
		1659	{
		1660	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1661	w_->pending = 0;
		1662	p->w = 0;
		1663	return p->events;
		1664	}
		1665	else
		1666	return 0;
		1667	}
		1668
		1669	void inline_size
		1670	pri_adjust (EV_P_ W w)
		1671	{
		1672	int pri = w->priority;
		1673	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1674	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1675	w->priority = pri;
		1676	}
		1677
1521	void inline_speed	1678	void inline_speed
1522	ev_start (EV_P_ W w, int active)	1679	ev_start (EV_P_ W w, int active)
1523	{	1680	{
1524	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1681	pri_adjust (EV_A_ w);
1525	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1526
1527	w->active = active;	1682	w->active = active;
1528	ev_ref (EV_A);	1683	ev_ref (EV_A);
1529	}	1684	}
1530		1685
1531	void inline_size	1686	void inline_size
…		…
1535	w->active = 0;	1690	w->active = 0;
1536	}	1691	}
1537		1692
1538	/*****************************************************************************/	1693	/*****************************************************************************/
1539		1694
1540	void	1695	void noinline
1541	ev_io_start (EV_P_ ev_io *w)	1696	ev_io_start (EV_P_ ev_io *w)
1542	{	1697	{
1543	int fd = w->fd;	1698	int fd = w->fd;
1544		1699
1545	if (expect_false (ev_is_active (w)))	1700	if (expect_false (ev_is_active (w)))
…		…
1547		1702
1548	assert (("ev_io_start called with negative fd", fd >= 0));	1703	assert (("ev_io_start called with negative fd", fd >= 0));
1549		1704
1550	ev_start (EV_A_ (W)w, 1);	1705	ev_start (EV_A_ (W)w, 1);
1551	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1706	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1552	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1707	wlist_add (&anfds[fd].head, (WL)w);
1553		1708
1554	fd_change (EV_A_ fd);	1709	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1710	w->events &= ~EV_IOFDSET;
1555	}	1711	}
1556		1712
1557	void	1713	void noinline
1558	ev_io_stop (EV_P_ ev_io *w)	1714	ev_io_stop (EV_P_ ev_io *w)
1559	{	1715	{
1560	ev_clear_pending (EV_A_ (W)w);	1716	clear_pending (EV_A_ (W)w);
1561	if (expect_false (!ev_is_active (w)))	1717	if (expect_false (!ev_is_active (w)))
1562	return;	1718	return;
1563		1719
1564	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1720	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1565		1721
1566	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1722	wlist_del (&anfds[w->fd].head, (WL)w);
1567	ev_stop (EV_A_ (W)w);	1723	ev_stop (EV_A_ (W)w);
1568		1724
1569	fd_change (EV_A_ w->fd);	1725	fd_change (EV_A_ w->fd, 1);
1570	}	1726	}
1571		1727
1572	void	1728	void noinline
1573	ev_timer_start (EV_P_ ev_timer *w)	1729	ev_timer_start (EV_P_ ev_timer *w)
1574	{	1730	{
1575	if (expect_false (ev_is_active (w)))	1731	if (expect_false (ev_is_active (w)))
1576	return;	1732	return;
1577		1733
1578	((WT)w)->at += mn_now;	1734	((WT)w)->at += mn_now;
1579		1735
1580	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1736	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1581		1737
1582	ev_start (EV_A_ (W)w, ++timercnt);	1738	ev_start (EV_A_ (W)w, ++timercnt);
1583	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1739	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1584	timers [timercnt - 1] = w;	1740	timers [timercnt - 1] = (WT)w;
1585	upheap ((WT *)timers, timercnt - 1);	1741	upheap (timers, timercnt - 1);
1586		1742
1587	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1743	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1588	}	1744	}
1589		1745
1590	void	1746	void noinline
1591	ev_timer_stop (EV_P_ ev_timer *w)	1747	ev_timer_stop (EV_P_ ev_timer *w)
1592	{	1748	{
1593	ev_clear_pending (EV_A_ (W)w);	1749	clear_pending (EV_A_ (W)w);
1594	if (expect_false (!ev_is_active (w)))	1750	if (expect_false (!ev_is_active (w)))
1595	return;	1751	return;
1596		1752
1597	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1753	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1598		1754
1599	{	1755	{
1600	int active = ((W)w)->active;	1756	int active = ((W)w)->active;
1601		1757
1602	if (expect_true (--active < --timercnt))	1758	if (expect_true (--active < --timercnt))
1603	{	1759	{
1604	timers [active] = timers [timercnt];	1760	timers [active] = timers [timercnt];
1605	adjustheap ((WT *)timers, timercnt, active);	1761	adjustheap (timers, timercnt, active);
1606	}	1762	}
1607	}	1763	}
1608		1764
1609	((WT)w)->at -= mn_now;	1765	((WT)w)->at -= mn_now;
1610		1766
1611	ev_stop (EV_A_ (W)w);	1767	ev_stop (EV_A_ (W)w);
1612	}	1768	}
1613		1769
1614	void	1770	void noinline
1615	ev_timer_again (EV_P_ ev_timer *w)	1771	ev_timer_again (EV_P_ ev_timer *w)
1616	{	1772	{
1617	if (ev_is_active (w))	1773	if (ev_is_active (w))
1618	{	1774	{
1619	if (w->repeat)	1775	if (w->repeat)
1620	{	1776	{
1621	((WT)w)->at = mn_now + w->repeat;	1777	((WT)w)->at = mn_now + w->repeat;
1622	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1778	adjustheap (timers, timercnt, ((W)w)->active - 1);
1623	}	1779	}
1624	else	1780	else
1625	ev_timer_stop (EV_A_ w);	1781	ev_timer_stop (EV_A_ w);
1626	}	1782	}
1627	else if (w->repeat)	1783	else if (w->repeat)
…		…
1630	ev_timer_start (EV_A_ w);	1786	ev_timer_start (EV_A_ w);
1631	}	1787	}
1632	}	1788	}
1633		1789
1634	#if EV_PERIODIC_ENABLE	1790	#if EV_PERIODIC_ENABLE
1635	void	1791	void noinline
1636	ev_periodic_start (EV_P_ ev_periodic *w)	1792	ev_periodic_start (EV_P_ ev_periodic *w)
1637	{	1793	{
1638	if (expect_false (ev_is_active (w)))	1794	if (expect_false (ev_is_active (w)))
1639	return;	1795	return;
1640		1796
…		…
1642	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1798	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1643	else if (w->interval)	1799	else if (w->interval)
1644	{	1800	{
1645	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1801	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1646	/* this formula differs from the one in periodic_reify because we do not always round up */	1802	/* this formula differs from the one in periodic_reify because we do not always round up */
1647	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1803	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1648	}	1804	}
		1805	else
		1806	((WT)w)->at = w->offset;
1649		1807
1650	ev_start (EV_A_ (W)w, ++periodiccnt);	1808	ev_start (EV_A_ (W)w, ++periodiccnt);
1651	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1809	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1652	periodics [periodiccnt - 1] = w;	1810	periodics [periodiccnt - 1] = (WT)w;
1653	upheap ((WT *)periodics, periodiccnt - 1);	1811	upheap (periodics, periodiccnt - 1);
1654		1812
1655	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1813	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1656	}	1814	}
1657		1815
1658	void	1816	void noinline
1659	ev_periodic_stop (EV_P_ ev_periodic *w)	1817	ev_periodic_stop (EV_P_ ev_periodic *w)
1660	{	1818	{
1661	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1662	if (expect_false (!ev_is_active (w)))	1820	if (expect_false (!ev_is_active (w)))
1663	return;	1821	return;
1664		1822
1665	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1823	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1666		1824
1667	{	1825	{
1668	int active = ((W)w)->active;	1826	int active = ((W)w)->active;
1669		1827
1670	if (expect_true (--active < --periodiccnt))	1828	if (expect_true (--active < --periodiccnt))
1671	{	1829	{
1672	periodics [active] = periodics [periodiccnt];	1830	periodics [active] = periodics [periodiccnt];
1673	adjustheap ((WT *)periodics, periodiccnt, active);	1831	adjustheap (periodics, periodiccnt, active);
1674	}	1832	}
1675	}	1833	}
1676		1834
1677	ev_stop (EV_A_ (W)w);	1835	ev_stop (EV_A_ (W)w);
1678	}	1836	}
1679		1837
1680	void	1838	void noinline
1681	ev_periodic_again (EV_P_ ev_periodic *w)	1839	ev_periodic_again (EV_P_ ev_periodic *w)
1682	{	1840	{
1683	/* TODO: use adjustheap and recalculation */	1841	/* TODO: use adjustheap and recalculation */
1684	ev_periodic_stop (EV_A_ w);	1842	ev_periodic_stop (EV_A_ w);
1685	ev_periodic_start (EV_A_ w);	1843	ev_periodic_start (EV_A_ w);
…		…
1688		1846
1689	#ifndef SA_RESTART	1847	#ifndef SA_RESTART
1690	# define SA_RESTART 0	1848	# define SA_RESTART 0
1691	#endif	1849	#endif
1692		1850
1693	void	1851	void noinline
1694	ev_signal_start (EV_P_ ev_signal *w)	1852	ev_signal_start (EV_P_ ev_signal *w)
1695	{	1853	{
1696	#if EV_MULTIPLICITY	1854	#if EV_MULTIPLICITY
1697	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1855	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1698	#endif	1856	#endif
1699	if (expect_false (ev_is_active (w)))	1857	if (expect_false (ev_is_active (w)))
1700	return;	1858	return;
1701		1859
1702	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1860	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1703		1861
		1862	{
		1863	#ifndef _WIN32
		1864	sigset_t full, prev;
		1865	sigfillset (&full);
		1866	sigprocmask (SIG_SETMASK, &full, &prev);
		1867	#endif
		1868
		1869	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1870
		1871	#ifndef _WIN32
		1872	sigprocmask (SIG_SETMASK, &prev, 0);
		1873	#endif
		1874	}
		1875
1704	ev_start (EV_A_ (W)w, 1);	1876	ev_start (EV_A_ (W)w, 1);
1705	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1706	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1877	wlist_add (&signals [w->signum - 1].head, (WL)w);
1707		1878
1708	if (!((WL)w)->next)	1879	if (!((WL)w)->next)
1709	{	1880	{
1710	#if _WIN32	1881	#if _WIN32
1711	signal (w->signum, sighandler);	1882	signal (w->signum, sighandler);
…		…
1717	sigaction (w->signum, &sa, 0);	1888	sigaction (w->signum, &sa, 0);
1718	#endif	1889	#endif
1719	}	1890	}
1720	}	1891	}
1721		1892
1722	void	1893	void noinline
1723	ev_signal_stop (EV_P_ ev_signal *w)	1894	ev_signal_stop (EV_P_ ev_signal *w)
1724	{	1895	{
1725	ev_clear_pending (EV_A_ (W)w);	1896	clear_pending (EV_A_ (W)w);
1726	if (expect_false (!ev_is_active (w)))	1897	if (expect_false (!ev_is_active (w)))
1727	return;	1898	return;
1728		1899
1729	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1900	wlist_del (&signals [w->signum - 1].head, (WL)w);
1730	ev_stop (EV_A_ (W)w);	1901	ev_stop (EV_A_ (W)w);
1731		1902
1732	if (!signals [w->signum - 1].head)	1903	if (!signals [w->signum - 1].head)
1733	signal (w->signum, SIG_DFL);	1904	signal (w->signum, SIG_DFL);
1734	}	1905	}
…		…
1741	#endif	1912	#endif
1742	if (expect_false (ev_is_active (w)))	1913	if (expect_false (ev_is_active (w)))
1743	return;	1914	return;
1744		1915
1745	ev_start (EV_A_ (W)w, 1);	1916	ev_start (EV_A_ (W)w, 1);
1746	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1917	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1747	}	1918	}
1748		1919
1749	void	1920	void
1750	ev_child_stop (EV_P_ ev_child *w)	1921	ev_child_stop (EV_P_ ev_child *w)
1751	{	1922	{
1752	ev_clear_pending (EV_A_ (W)w);	1923	clear_pending (EV_A_ (W)w);
1753	if (expect_false (!ev_is_active (w)))	1924	if (expect_false (!ev_is_active (w)))
1754	return;	1925	return;
1755		1926
1756	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1927	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1757	ev_stop (EV_A_ (W)w);	1928	ev_stop (EV_A_ (W)w);
1758	}	1929	}
1759		1930
1760	#if EV_STAT_ENABLE	1931	#if EV_STAT_ENABLE
1761		1932
…		…
1993	}	2164	}
1994		2165
1995	void	2166	void
1996	ev_stat_stop (EV_P_ ev_stat *w)	2167	ev_stat_stop (EV_P_ ev_stat *w)
1997	{	2168	{
1998	ev_clear_pending (EV_A_ (W)w);	2169	clear_pending (EV_A_ (W)w);
1999	if (expect_false (!ev_is_active (w)))	2170	if (expect_false (!ev_is_active (w)))
2000	return;	2171	return;
2001		2172
2002	#if EV_USE_INOTIFY	2173	#if EV_USE_INOTIFY
2003	infy_del (EV_A_ w);	2174	infy_del (EV_A_ w);
…		…
2006		2177
2007	ev_stop (EV_A_ (W)w);	2178	ev_stop (EV_A_ (W)w);
2008	}	2179	}
2009	#endif	2180	#endif
2010		2181
		2182	#if EV_IDLE_ENABLE
2011	void	2183	void
2012	ev_idle_start (EV_P_ ev_idle *w)	2184	ev_idle_start (EV_P_ ev_idle *w)
2013	{	2185	{
2014	if (expect_false (ev_is_active (w)))	2186	if (expect_false (ev_is_active (w)))
2015	return;	2187	return;
2016		2188
		2189	pri_adjust (EV_A_ (W)w);
		2190
		2191	{
		2192	int active = ++idlecnt [ABSPRI (w)];
		2193
		2194	++idleall;
2017	ev_start (EV_A_ (W)w, ++idlecnt);	2195	ev_start (EV_A_ (W)w, active);
		2196
2018	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2197	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2019	idles [idlecnt - 1] = w;	2198	idles [ABSPRI (w)][active - 1] = w;
		2199	}
2020	}	2200	}
2021		2201
2022	void	2202	void
2023	ev_idle_stop (EV_P_ ev_idle *w)	2203	ev_idle_stop (EV_P_ ev_idle *w)
2024	{	2204	{
2025	ev_clear_pending (EV_A_ (W)w);	2205	clear_pending (EV_A_ (W)w);
2026	if (expect_false (!ev_is_active (w)))	2206	if (expect_false (!ev_is_active (w)))
2027	return;	2207	return;
2028		2208
2029	{	2209	{
2030	int active = ((W)w)->active;	2210	int active = ((W)w)->active;
2031	idles [active - 1] = idles [--idlecnt];	2211
		2212	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2032	((W)idles [active - 1])->active = active;	2213	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	--idleall;
2033	}	2217	}
2034
2035	ev_stop (EV_A_ (W)w);
2036	}	2218	}
		2219	#endif
2037		2220
2038	void	2221	void
2039	ev_prepare_start (EV_P_ ev_prepare *w)	2222	ev_prepare_start (EV_P_ ev_prepare *w)
2040	{	2223	{
2041	if (expect_false (ev_is_active (w)))	2224	if (expect_false (ev_is_active (w)))
…		…
2047	}	2230	}
2048		2231
2049	void	2232	void
2050	ev_prepare_stop (EV_P_ ev_prepare *w)	2233	ev_prepare_stop (EV_P_ ev_prepare *w)
2051	{	2234	{
2052	ev_clear_pending (EV_A_ (W)w);	2235	clear_pending (EV_A_ (W)w);
2053	if (expect_false (!ev_is_active (w)))	2236	if (expect_false (!ev_is_active (w)))
2054	return;	2237	return;
2055		2238
2056	{	2239	{
2057	int active = ((W)w)->active;	2240	int active = ((W)w)->active;
…		…
2074	}	2257	}
2075		2258
2076	void	2259	void
2077	ev_check_stop (EV_P_ ev_check *w)	2260	ev_check_stop (EV_P_ ev_check *w)
2078	{	2261	{
2079	ev_clear_pending (EV_A_ (W)w);	2262	clear_pending (EV_A_ (W)w);
2080	if (expect_false (!ev_is_active (w)))	2263	if (expect_false (!ev_is_active (w)))
2081	return;	2264	return;
2082		2265
2083	{	2266	{
2084	int active = ((W)w)->active;	2267	int active = ((W)w)->active;
…		…
2091		2274
2092	#if EV_EMBED_ENABLE	2275	#if EV_EMBED_ENABLE
2093	void noinline	2276	void noinline
2094	ev_embed_sweep (EV_P_ ev_embed *w)	2277	ev_embed_sweep (EV_P_ ev_embed *w)
2095	{	2278	{
2096	ev_loop (w->loop, EVLOOP_NONBLOCK);	2279	ev_loop (w->other, EVLOOP_NONBLOCK);
2097	}	2280	}
2098		2281
2099	static void	2282	static void
2100	embed_cb (EV_P_ ev_io *io, int revents)	2283	embed_io_cb (EV_P_ ev_io *io, int revents)
2101	{	2284	{
2102	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2285	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2103		2286
2104	if (ev_cb (w))	2287	if (ev_cb (w))
2105	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2288	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106	else	2289	else
2107	ev_embed_sweep (loop, w);	2290	ev_loop (w->other, EVLOOP_NONBLOCK);
2108	}	2291	}
		2292
		2293	static void
		2294	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2295	{
		2296	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2297
		2298	{
		2299	struct ev_loop *loop = w->other;
		2300
		2301	while (fdchangecnt)
		2302	{
		2303	fd_reify (EV_A);
		2304	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2305	}
		2306	}
		2307	}
		2308
		2309	#if 0
		2310	static void
		2311	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2312	{
		2313	ev_idle_stop (EV_A_ idle);
		2314	}
		2315	#endif
2109		2316
2110	void	2317	void
2111	ev_embed_start (EV_P_ ev_embed *w)	2318	ev_embed_start (EV_P_ ev_embed *w)
2112	{	2319	{
2113	if (expect_false (ev_is_active (w)))	2320	if (expect_false (ev_is_active (w)))
2114	return;	2321	return;
2115		2322
2116	{	2323	{
2117	struct ev_loop *loop = w->loop;	2324	struct ev_loop *loop = w->other;
2118	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2325	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2326	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2120	}	2327	}
2121		2328
2122	ev_set_priority (&w->io, ev_priority (w));	2329	ev_set_priority (&w->io, ev_priority (w));
2123	ev_io_start (EV_A_ &w->io);	2330	ev_io_start (EV_A_ &w->io);
2124		2331
		2332	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2333	ev_set_priority (&w->prepare, EV_MINPRI);
		2334	ev_prepare_start (EV_A_ &w->prepare);
		2335
		2336	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2337
2125	ev_start (EV_A_ (W)w, 1);	2338	ev_start (EV_A_ (W)w, 1);
2126	}	2339	}
2127		2340
2128	void	2341	void
2129	ev_embed_stop (EV_P_ ev_embed *w)	2342	ev_embed_stop (EV_P_ ev_embed *w)
2130	{	2343	{
2131	ev_clear_pending (EV_A_ (W)w);	2344	clear_pending (EV_A_ (W)w);
2132	if (expect_false (!ev_is_active (w)))	2345	if (expect_false (!ev_is_active (w)))
2133	return;	2346	return;
2134		2347
2135	ev_io_stop (EV_A_ &w->io);	2348	ev_io_stop (EV_A_ &w->io);
		2349	ev_prepare_stop (EV_A_ &w->prepare);
2136		2350
2137	ev_stop (EV_A_ (W)w);	2351	ev_stop (EV_A_ (W)w);
2138	}	2352	}
2139	#endif	2353	#endif
2140		2354
…		…
2151	}	2365	}
2152		2366
2153	void	2367	void
2154	ev_fork_stop (EV_P_ ev_fork *w)	2368	ev_fork_stop (EV_P_ ev_fork *w)
2155	{	2369	{
2156	ev_clear_pending (EV_A_ (W)w);	2370	clear_pending (EV_A_ (W)w);
2157	if (expect_false (!ev_is_active (w)))	2371	if (expect_false (!ev_is_active (w)))
2158	return;	2372	return;
2159		2373
2160	{	2374	{
2161	int active = ((W)w)->active;	2375	int active = ((W)w)->active;
…		…
2229	ev_timer_set (&once->to, timeout, 0.);	2443	ev_timer_set (&once->to, timeout, 0.);
2230	ev_timer_start (EV_A_ &once->to);	2444	ev_timer_start (EV_A_ &once->to);
2231	}	2445	}
2232	}	2446	}
2233		2447
		2448	#if EV_MULTIPLICITY
		2449	#include "ev_wrap.h"
		2450	#endif
		2451
2234	#ifdef __cplusplus	2452	#ifdef __cplusplus
2235	}	2453	}
2236	#endif	2454	#endif
2237		2455

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Comparing libev/ev.c (file contents): Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs. Revision 1.205 by root, Sun Jan 20 15:37:03 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.205 by root, Sun Jan 20 15:37:03 2008 UTC