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

Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC

…		…
1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
51	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	61	# define EV_USE_MONOTONIC 0
53	# endif	62	# endif
54	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	64	# define EV_USE_REALTIME 0
		65	# endif
		66	# endif
		67
		68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
		70	# define EV_USE_NANOSLEEP 1
		71	# else
		72	# define EV_USE_NANOSLEEP 0
56	# endif	73	# endif
57	# endif	74	# endif
58		75
59	# ifndef EV_USE_SELECT	76	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	119	# else
103	# define EV_USE_INOTIFY 0	120	# define EV_USE_INOTIFY 0
104	# endif	121	# endif
105	# endif	122	# endif
106		123
		124	# ifndef EV_USE_EVENTFD
		125	# if HAVE_EVENTFD
		126	# define EV_USE_EVENTFD 1
		127	# else
		128	# define EV_USE_EVENTFD 0
		129	# endif
		130	# endif
		131
107	#endif	132	#endif
108		133
109	#include <math.h>	134	#include <math.h>
110	#include <stdlib.h>	135	#include <stdlib.h>
111	#include <fcntl.h>	136	#include <fcntl.h>
…		…
136	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	163	# endif
139	#endif	164	#endif
140		165
141	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		167
143	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
144	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
145	#endif	170	#endif
146		171
147	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
149	#endif	178	#endif
150		179
151	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
153	#endif	182	#endif
…		…
159	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
160	# endif	189	# endif
161	#endif	190	#endif
162		191
163	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
164	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
165	#endif	198	#endif
166		199
167	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
169	#endif	202	#endif
…		…
171	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
173	#endif	206	#endif
174		207
175	#ifndef EV_USE_INOTIFY	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
176	# define EV_USE_INOTIFY 0	212	# define EV_USE_INOTIFY 0
		213	# endif
177	#endif	214	#endif
178		215
179	#ifndef EV_PID_HASHSIZE	216	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	217	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	218	# define EV_PID_HASHSIZE 1
…		…
190	# else	227	# else
191	# define EV_INOTIFY_HASHSIZE 16	228	# define EV_INOTIFY_HASHSIZE 16
192	# endif	229	# endif
193	#endif	230	#endif
194		231
195	/**/	232	#ifndef EV_USE_EVENTFD
		233	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		234	# define EV_USE_EVENTFD 1
		235	# else
		236	# define EV_USE_EVENTFD 0
		237	# endif
		238	#endif
		239
		240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		241
197	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
200	#endif	245	#endif
…		…
202	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
205	#endif	250	#endif
206		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
207	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	268	# include <winsock.h>
209	#endif	269	#endif
210		270
211	#if !EV_STAT_ENABLE	271	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
213	#endif	276	# endif
214		277	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	278	# ifdef __cplusplus
216	# include <sys/inotify.h>	279	}
		280	# endif
217	#endif	281	#endif
218		282
219	/**/	283	/**/
220		284
221	/*	285	/*
…		…
230		294
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */	297	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
234		298
235	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	301	# define noinline __attribute__ ((noinline))
238	#else	302	#else
239	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
240	# define noinline	304	# define noinline
…		…
261		325
262	typedef ev_watcher *W;	326	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
265		329
		330	#if EV_USE_MONOTONIC
		331	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		332	/* giving it a reasonably high chance of working on typical architetcures */
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	333	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		334	#endif
267		335
268	#ifdef _WIN32	336	#ifdef _WIN32
269	# include "ev_win32.c"	337	# include "ev_win32.c"
270	#endif	338	#endif
271		339
…		…
407	{	475	{
408	return ev_rt_now;	476	return ev_rt_now;
409	}	477	}
410	#endif	478	#endif
411		479
		480	void
		481	ev_sleep (ev_tstamp delay)
		482	{
		483	if (delay > 0.)
		484	{
		485	#if EV_USE_NANOSLEEP
		486	struct timespec ts;
		487
		488	ts.tv_sec = (time_t)delay;
		489	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		490
		491	nanosleep (&ts, 0);
		492	#elif defined(_WIN32)
		493	Sleep ((unsigned long)(delay * 1e3));
		494	#else
		495	struct timeval tv;
		496
		497	tv.tv_sec = (time_t)delay;
		498	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		499
		500	select (0, 0, 0, 0, &tv);
		501	#endif
		502	}
		503	}
		504
		505	/*****************************************************************************/
		506
412	int inline_size	507	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	508	array_nextsize (int elem, int cur, int cnt)
414	{	509	{
415	int ncur = cur + 1;	510	int ncur = cur + 1;
416		511
…		…
476	pendings [pri][w_->pending - 1].w = w_;	571	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	572	pendings [pri][w_->pending - 1].events = revents;
478	}	573	}
479	}	574	}
480		575
481	void inline_size	576	void inline_speed
482	queue_events (EV_P_ W *events, int eventcnt, int type)	577	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	578	{
484	int i;	579	int i;
485		580
486	for (i = 0; i < eventcnt; ++i)	581	for (i = 0; i < eventcnt; ++i)
…		…
533	{	628	{
534	int fd = fdchanges [i];	629	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	630	ANFD *anfd = anfds + fd;
536	ev_io *w;	631	ev_io *w;
537		632
538	int events = 0;	633	unsigned char events = 0;
539		634
540	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	635	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
541	events \|= w->events;	636	events \|= (unsigned char)w->events;
542		637
543	#if EV_SELECT_IS_WINSOCKET	638	#if EV_SELECT_IS_WINSOCKET
544	if (events)	639	if (events)
545	{	640	{
546	unsigned long argp;	641	unsigned long argp;
		642	#ifdef EV_FD_TO_WIN32_HANDLE
		643	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		644	#else
547	anfd->handle = _get_osfhandle (fd);	645	anfd->handle = _get_osfhandle (fd);
		646	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	647	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	648	}
550	#endif	649	#endif
551		650
		651	{
		652	unsigned char o_events = anfd->events;
		653	unsigned char o_reify = anfd->reify;
		654
552	anfd->reify = 0;	655	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	656	anfd->events = events;
		657
		658	if (o_events != events \|\| o_reify & EV_IOFDSET)
		659	backend_modify (EV_A_ fd, o_events, events);
		660	}
556	}	661	}
557		662
558	fdchangecnt = 0;	663	fdchangecnt = 0;
559	}	664	}
560		665
561	void inline_size	666	void inline_size
562	fd_change (EV_P_ int fd)	667	fd_change (EV_P_ int fd, int flags)
563	{	668	{
564	if (expect_false (anfds [fd].reify))	669	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	670	anfds [fd].reify \|= flags;
568		671
		672	if (expect_true (!reify))
		673	{
569	++fdchangecnt;	674	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	675	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	676	fdchanges [fdchangecnt - 1] = fd;
		677	}
572	}	678	}
573		679
574	void inline_speed	680	void inline_speed
575	fd_kill (EV_P_ int fd)	681	fd_kill (EV_P_ int fd)
576	{	682	{
…		…
627		733
628	for (fd = 0; fd < anfdmax; ++fd)	734	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	735	if (anfds [fd].events)
630	{	736	{
631	anfds [fd].events = 0;	737	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	738	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
633	}	739	}
634	}	740	}
635		741
636	/*****************************************************************************/	742	/*****************************************************************************/
637		743
638	void inline_speed	744	void inline_speed
639	upheap (WT *heap, int k)	745	upheap (WT *heap, int k)
640	{	746	{
641	WT w = heap [k];	747	WT w = heap [k];
642		748
643	while (k && heap [k >> 1]->at > w->at)	749	while (k)
644	{	750	{
		751	int p = (k - 1) >> 1;
		752
		753	if (heap [p]->at <= w->at)
		754	break;
		755
645	heap [k] = heap [k >> 1];	756	heap [k] = heap [p];
646	((W)heap [k])->active = k + 1;	757	((W)heap [k])->active = k + 1;
647	k >>= 1;	758	k = p;
648	}	759	}
649		760
650	heap [k] = w;	761	heap [k] = w;
651	((W)heap [k])->active = k + 1;	762	((W)heap [k])->active = k + 1;
652
653	}	763	}
654		764
655	void inline_speed	765	void inline_speed
656	downheap (WT *heap, int N, int k)	766	downheap (WT *heap, int N, int k)
657	{	767	{
658	WT w = heap [k];	768	WT w = heap [k];
659		769
660	while (k < (N >> 1))	770	for (;;)
661	{	771	{
662	int j = k << 1;	772	int c = (k << 1) + 1;
663		773
664	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	774	if (c >= N)
665	++j;
666
667	if (w->at <= heap [j]->at)
668	break;	775	break;
669		776
		777	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		778	? 1 : 0;
		779
		780	if (w->at <= heap [c]->at)
		781	break;
		782
670	heap [k] = heap [j];	783	heap [k] = heap [c];
671	((W)heap [k])->active = k + 1;	784	((W)heap [k])->active = k + 1;
		785
672	k = j;	786	k = c;
673	}	787	}
674		788
675	heap [k] = w;	789	heap [k] = w;
676	((W)heap [k])->active = k + 1;	790	((W)heap [k])->active = k + 1;
677	}	791	}
…		…
686	/*****************************************************************************/	800	/*****************************************************************************/
687		801
688	typedef struct	802	typedef struct
689	{	803	{
690	WL head;	804	WL head;
691	sig_atomic_t volatile gotsig;	805	EV_ATOMIC_T gotsig;
692	} ANSIG;	806	} ANSIG;
693		807
694	static ANSIG *signals;	808	static ANSIG *signals;
695	static int signalmax;	809	static int signalmax;
696		810
697	static int sigpipe [2];	811	static EV_ATOMIC_T gotsig;
698	static sig_atomic_t volatile gotsig;
699	static ev_io sigev;
700		812
701	void inline_size	813	void inline_size
702	signals_init (ANSIG *base, int count)	814	signals_init (ANSIG *base, int count)
703	{	815	{
704	while (count--)	816	while (count--)
…		…
708		820
709	++base;	821	++base;
710	}	822	}
711	}	823	}
712		824
713	static void	825	/*****************************************************************************/
714	sighandler (int signum)
715	{
716	#if _WIN32
717	signal (signum, sighandler);
718	#endif
719
720	signals [signum - 1].gotsig = 1;
721
722	if (!gotsig)
723	{
724	int old_errno = errno;
725	gotsig = 1;
726	write (sigpipe [1], &signum, 1);
727	errno = old_errno;
728	}
729	}
730
731	void noinline
732	ev_feed_signal_event (EV_P_ int signum)
733	{
734	WL w;
735
736	#if EV_MULTIPLICITY
737	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
738	#endif
739
740	--signum;
741
742	if (signum < 0 \|\| signum >= signalmax)
743	return;
744
745	signals [signum].gotsig = 0;
746
747	for (w = signals [signum].head; w; w = w->next)
748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
749	}
750
751	static void
752	sigcb (EV_P_ ev_io *iow, int revents)
753	{
754	int signum;
755
756	read (sigpipe [0], &revents, 1);
757	gotsig = 0;
758
759	for (signum = signalmax; signum--; )
760	if (signals [signum].gotsig)
761	ev_feed_signal_event (EV_A_ signum + 1);
762	}
763		826
764	void inline_speed	827	void inline_speed
765	fd_intern (int fd)	828	fd_intern (int fd)
766	{	829	{
767	#ifdef _WIN32	830	#ifdef _WIN32
…		…
772	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
773	#endif	836	#endif
774	}	837	}
775		838
776	static void noinline	839	static void noinline
777	siginit (EV_P)	840	evpipe_init (EV_P)
778	{	841	{
		842	if (!ev_is_active (&pipeev))
		843	{
		844	#if EV_USE_EVENTFD
		845	if ((evfd = eventfd (0, 0)) >= 0)
		846	{
		847	evpipe [0] = -1;
		848	fd_intern (evfd);
		849	ev_io_set (&pipeev, evfd, EV_READ);
		850	}
		851	else
		852	#endif
		853	{
		854	while (pipe (evpipe))
		855	syserr ("(libev) error creating signal/async pipe");
		856
779	fd_intern (sigpipe [0]);	857	fd_intern (evpipe [0]);
780	fd_intern (sigpipe [1]);	858	fd_intern (evpipe [1]);
		859	ev_io_set (&pipeev, evpipe [0], EV_READ);
		860	}
781		861
782	ev_io_set (&sigev, sigpipe [0], EV_READ);
783	ev_io_start (EV_A_ &sigev);	862	ev_io_start (EV_A_ &pipeev);
784	ev_unref (EV_A); /* child watcher should not keep loop alive */	863	ev_unref (EV_A); /* watcher should not keep loop alive */
		864	}
		865	}
		866
		867	void inline_size
		868	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		869	{
		870	if (!*flag)
		871	{
		872	int old_errno = errno; /* save errno because write might clobber it */
		873
		874	*flag = 1;
		875
		876	#if EV_USE_EVENTFD
		877	if (evfd >= 0)
		878	{
		879	uint64_t counter = 1;
		880	write (evfd, &counter, sizeof (uint64_t));
		881	}
		882	else
		883	#endif
		884	write (evpipe [1], &old_errno, 1);
		885
		886	errno = old_errno;
		887	}
		888	}
		889
		890	static void
		891	pipecb (EV_P_ ev_io *iow, int revents)
		892	{
		893	#if EV_USE_EVENTFD
		894	if (evfd >= 0)
		895	{
		896	uint64_t counter = 1;
		897	read (evfd, &counter, sizeof (uint64_t));
		898	}
		899	else
		900	#endif
		901	{
		902	char dummy;
		903	read (evpipe [0], &dummy, 1);
		904	}
		905
		906	if (gotsig && ev_is_default_loop (EV_A))
		907	{
		908	int signum;
		909	gotsig = 0;
		910
		911	for (signum = signalmax; signum--; )
		912	if (signals [signum].gotsig)
		913	ev_feed_signal_event (EV_A_ signum + 1);
		914	}
		915
		916	#if EV_ASYNC_ENABLE
		917	if (gotasync)
		918	{
		919	int i;
		920	gotasync = 0;
		921
		922	for (i = asynccnt; i--; )
		923	if (asyncs [i]->sent)
		924	{
		925	asyncs [i]->sent = 0;
		926	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		927	}
		928	}
		929	#endif
785	}	930	}
786		931
787	/*****************************************************************************/	932	/*****************************************************************************/
788		933
		934	static void
		935	ev_sighandler (int signum)
		936	{
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *loop = &default_loop_struct;
		939	#endif
		940
		941	#if _WIN32
		942	signal (signum, ev_sighandler);
		943	#endif
		944
		945	signals [signum - 1].gotsig = 1;
		946	evpipe_write (EV_A_ &gotsig);
		947	}
		948
		949	void noinline
		950	ev_feed_signal_event (EV_P_ int signum)
		951	{
		952	WL w;
		953
		954	#if EV_MULTIPLICITY
		955	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		956	#endif
		957
		958	--signum;
		959
		960	if (signum < 0 \|\| signum >= signalmax)
		961	return;
		962
		963	signals [signum].gotsig = 0;
		964
		965	for (w = signals [signum].head; w; w = w->next)
		966	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		967	}
		968
		969	/*****************************************************************************/
		970
789	static ev_child *childs [EV_PID_HASHSIZE];	971	static WL childs [EV_PID_HASHSIZE];
790		972
791	#ifndef _WIN32	973	#ifndef _WIN32
792		974
793	static ev_signal childev;	975	static ev_signal childev;
794		976
		977	#ifndef WIFCONTINUED
		978	# define WIFCONTINUED(status) 0
		979	#endif
		980
795	void inline_speed	981	void inline_speed
796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	982	child_reap (EV_P_ int chain, int pid, int status)
797	{	983	{
798	ev_child *w;	984	ev_child *w;
		985	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
799		986
800	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	987	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		988	{
801	if (w->pid == pid \|\| !w->pid)	989	if ((w->pid == pid \|\| !w->pid)
		990	&& (!traced \|\| (w->flags & 1)))
802	{	991	{
803	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	992	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
804	w->rpid = pid;	993	w->rpid = pid;
805	w->rstatus = status;	994	w->rstatus = status;
806	ev_feed_event (EV_A_ (W)w, EV_CHILD);	995	ev_feed_event (EV_A_ (W)w, EV_CHILD);
807	}	996	}
		997	}
808	}	998	}
809		999
810	#ifndef WCONTINUED	1000	#ifndef WCONTINUED
811	# define WCONTINUED 0	1001	# define WCONTINUED 0
812	#endif	1002	#endif
…		…
821	if (!WCONTINUED	1011	if (!WCONTINUED
822	\|\| errno != EINVAL	1012	\|\| errno != EINVAL
823	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1013	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
824	return;	1014	return;
825		1015
826	/* make sure we are called again until all childs have been reaped */	1016	/* make sure we are called again until all children have been reaped */
827	/* we need to do it this way so that the callback gets called before we continue */	1017	/* we need to do it this way so that the callback gets called before we continue */
828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1018	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
829		1019
830	child_reap (EV_A_ sw, pid, pid, status);	1020	child_reap (EV_A_ pid, pid, status);
831	if (EV_PID_HASHSIZE > 1)	1021	if (EV_PID_HASHSIZE > 1)
832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1022	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
833	}	1023	}
834		1024
835	#endif	1025	#endif
836		1026
837	/*****************************************************************************/	1027	/*****************************************************************************/
…		…
909	}	1099	}
910		1100
911	unsigned int	1101	unsigned int
912	ev_embeddable_backends (void)	1102	ev_embeddable_backends (void)
913	{	1103	{
914	return EVBACKEND_EPOLL	1104	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
915	\| EVBACKEND_KQUEUE	1105
916	\| EVBACKEND_PORT;	1106	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1107	/* please fix it and tell me how to detect the fix */
		1108	flags &= ~EVBACKEND_EPOLL;
		1109
		1110	return flags;
917	}	1111	}
918		1112
919	unsigned int	1113	unsigned int
920	ev_backend (EV_P)	1114	ev_backend (EV_P)
921	{	1115	{
…		…
924		1118
925	unsigned int	1119	unsigned int
926	ev_loop_count (EV_P)	1120	ev_loop_count (EV_P)
927	{	1121	{
928	return loop_count;	1122	return loop_count;
		1123	}
		1124
		1125	void
		1126	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1127	{
		1128	io_blocktime = interval;
		1129	}
		1130
		1131	void
		1132	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1133	{
		1134	timeout_blocktime = interval;
929	}	1135	}
930		1136
931	static void noinline	1137	static void noinline
932	loop_init (EV_P_ unsigned int flags)	1138	loop_init (EV_P_ unsigned int flags)
933	{	1139	{
…		…
939	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1145	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
940	have_monotonic = 1;	1146	have_monotonic = 1;
941	}	1147	}
942	#endif	1148	#endif
943		1149
944	ev_rt_now = ev_time ();	1150	ev_rt_now = ev_time ();
945	mn_now = get_clock ();	1151	mn_now = get_clock ();
946	now_floor = mn_now;	1152	now_floor = mn_now;
947	rtmn_diff = ev_rt_now - mn_now;	1153	rtmn_diff = ev_rt_now - mn_now;
		1154
		1155	io_blocktime = 0.;
		1156	timeout_blocktime = 0.;
		1157	backend = 0;
		1158	backend_fd = -1;
		1159	gotasync = 0;
		1160	#if EV_USE_INOTIFY
		1161	fs_fd = -2;
		1162	#endif
948		1163
949	/* pid check not overridable via env */	1164	/* pid check not overridable via env */
950	#ifndef _WIN32	1165	#ifndef _WIN32
951	if (flags & EVFLAG_FORKCHECK)	1166	if (flags & EVFLAG_FORKCHECK)
952	curpid = getpid ();	1167	curpid = getpid ();
…		…
958	flags = atoi (getenv ("LIBEV_FLAGS"));	1173	flags = atoi (getenv ("LIBEV_FLAGS"));
959		1174
960	if (!(flags & 0x0000ffffUL))	1175	if (!(flags & 0x0000ffffUL))
961	flags \|= ev_recommended_backends ();	1176	flags \|= ev_recommended_backends ();
962		1177
963	backend = 0;
964	backend_fd = -1;
965	#if EV_USE_INOTIFY
966	fs_fd = -2;
967	#endif
968
969	#if EV_USE_PORT	1178	#if EV_USE_PORT
970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1179	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
971	#endif	1180	#endif
972	#if EV_USE_KQUEUE	1181	#if EV_USE_KQUEUE
973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1182	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
980	#endif	1189	#endif
981	#if EV_USE_SELECT	1190	#if EV_USE_SELECT
982	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1191	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
983	#endif	1192	#endif
984		1193
985	ev_init (&sigev, sigcb);	1194	ev_init (&pipeev, pipecb);
986	ev_set_priority (&sigev, EV_MAXPRI);	1195	ev_set_priority (&pipeev, EV_MAXPRI);
987	}	1196	}
988	}	1197	}
989		1198
990	static void noinline	1199	static void noinline
991	loop_destroy (EV_P)	1200	loop_destroy (EV_P)
992	{	1201	{
993	int i;	1202	int i;
		1203
		1204	if (ev_is_active (&pipeev))
		1205	{
		1206	ev_ref (EV_A); /* signal watcher */
		1207	ev_io_stop (EV_A_ &pipeev);
		1208
		1209	#if EV_USE_EVENTFD
		1210	if (evfd >= 0)
		1211	close (evfd);
		1212	#endif
		1213
		1214	if (evpipe [0] >= 0)
		1215	{
		1216	close (evpipe [0]);
		1217	close (evpipe [1]);
		1218	}
		1219	}
994		1220
995	#if EV_USE_INOTIFY	1221	#if EV_USE_INOTIFY
996	if (fs_fd >= 0)	1222	if (fs_fd >= 0)
997	close (fs_fd);	1223	close (fs_fd);
998	#endif	1224	#endif
…		…
1021	array_free (pending, [i]);	1247	array_free (pending, [i]);
1022	#if EV_IDLE_ENABLE	1248	#if EV_IDLE_ENABLE
1023	array_free (idle, [i]);	1249	array_free (idle, [i]);
1024	#endif	1250	#endif
1025	}	1251	}
		1252
		1253	ev_free (anfds); anfdmax = 0;
1026		1254
1027	/* have to use the microsoft-never-gets-it-right macro */	1255	/* have to use the microsoft-never-gets-it-right macro */
1028	array_free (fdchange, EMPTY);	1256	array_free (fdchange, EMPTY);
1029	array_free (timer, EMPTY);	1257	array_free (timer, EMPTY);
1030	#if EV_PERIODIC_ENABLE	1258	#if EV_PERIODIC_ENABLE
1031	array_free (periodic, EMPTY);	1259	array_free (periodic, EMPTY);
1032	#endif	1260	#endif
		1261	#if EV_FORK_ENABLE
		1262	array_free (fork, EMPTY);
		1263	#endif
1033	array_free (prepare, EMPTY);	1264	array_free (prepare, EMPTY);
1034	array_free (check, EMPTY);	1265	array_free (check, EMPTY);
		1266	#if EV_ASYNC_ENABLE
		1267	array_free (async, EMPTY);
		1268	#endif
1035		1269
1036	backend = 0;	1270	backend = 0;
1037	}	1271	}
1038		1272
1039	void inline_size infy_fork (EV_P);	1273	void inline_size infy_fork (EV_P);
…		…
1052	#endif	1286	#endif
1053	#if EV_USE_INOTIFY	1287	#if EV_USE_INOTIFY
1054	infy_fork (EV_A);	1288	infy_fork (EV_A);
1055	#endif	1289	#endif
1056		1290
1057	if (ev_is_active (&sigev))	1291	if (ev_is_active (&pipeev))
1058	{	1292	{
1059	/* default loop */	1293	/* this "locks" the handlers against writing to the pipe */
		1294	/* while we modify the fd vars */
		1295	gotsig = 1;
		1296	#if EV_ASYNC_ENABLE
		1297	gotasync = 1;
		1298	#endif
1060		1299
1061	ev_ref (EV_A);	1300	ev_ref (EV_A);
1062	ev_io_stop (EV_A_ &sigev);	1301	ev_io_stop (EV_A_ &pipeev);
		1302
		1303	#if EV_USE_EVENTFD
		1304	if (evfd >= 0)
		1305	close (evfd);
		1306	#endif
		1307
		1308	if (evpipe [0] >= 0)
		1309	{
1063	close (sigpipe [0]);	1310	close (evpipe [0]);
1064	close (sigpipe [1]);	1311	close (evpipe [1]);
		1312	}
1065		1313
1066	while (pipe (sigpipe))
1067	syserr ("(libev) error creating pipe");
1068
1069	siginit (EV_A);	1314	evpipe_init (EV_A);
		1315	/* now iterate over everything, in case we missed something */
		1316	pipecb (EV_A_ &pipeev, EV_READ);
1070	}	1317	}
1071		1318
1072	postfork = 0;	1319	postfork = 0;
1073	}	1320	}
1074		1321
…		…
1096	}	1343	}
1097		1344
1098	void	1345	void
1099	ev_loop_fork (EV_P)	1346	ev_loop_fork (EV_P)
1100	{	1347	{
1101	postfork = 1;	1348	postfork = 1; /* must be in line with ev_default_fork */
1102	}	1349	}
1103		1350
1104	#endif	1351	#endif
1105		1352
1106	#if EV_MULTIPLICITY	1353	#if EV_MULTIPLICITY
…		…
1109	#else	1356	#else
1110	int	1357	int
1111	ev_default_loop (unsigned int flags)	1358	ev_default_loop (unsigned int flags)
1112	#endif	1359	#endif
1113	{	1360	{
1114	if (sigpipe [0] == sigpipe [1])
1115	if (pipe (sigpipe))
1116	return 0;
1117
1118	if (!ev_default_loop_ptr)	1361	if (!ev_default_loop_ptr)
1119	{	1362	{
1120	#if EV_MULTIPLICITY	1363	#if EV_MULTIPLICITY
1121	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1364	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1122	#else	1365	#else
…		…
1125		1368
1126	loop_init (EV_A_ flags);	1369	loop_init (EV_A_ flags);
1127		1370
1128	if (ev_backend (EV_A))	1371	if (ev_backend (EV_A))
1129	{	1372	{
1130	siginit (EV_A);
1131
1132	#ifndef _WIN32	1373	#ifndef _WIN32
1133	ev_signal_init (&childev, childcb, SIGCHLD);	1374	ev_signal_init (&childev, childcb, SIGCHLD);
1134	ev_set_priority (&childev, EV_MAXPRI);	1375	ev_set_priority (&childev, EV_MAXPRI);
1135	ev_signal_start (EV_A_ &childev);	1376	ev_signal_start (EV_A_ &childev);
1136	ev_unref (EV_A); /* child watcher should not keep loop alive */	1377	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1153	#ifndef _WIN32	1394	#ifndef _WIN32
1154	ev_ref (EV_A); /* child watcher */	1395	ev_ref (EV_A); /* child watcher */
1155	ev_signal_stop (EV_A_ &childev);	1396	ev_signal_stop (EV_A_ &childev);
1156	#endif	1397	#endif
1157		1398
1158	ev_ref (EV_A); /* signal watcher */
1159	ev_io_stop (EV_A_ &sigev);
1160
1161	close (sigpipe [0]); sigpipe [0] = 0;
1162	close (sigpipe [1]); sigpipe [1] = 0;
1163
1164	loop_destroy (EV_A);	1399	loop_destroy (EV_A);
1165	}	1400	}
1166		1401
1167	void	1402	void
1168	ev_default_fork (void)	1403	ev_default_fork (void)
…		…
1170	#if EV_MULTIPLICITY	1405	#if EV_MULTIPLICITY
1171	struct ev_loop *loop = ev_default_loop_ptr;	1406	struct ev_loop *loop = ev_default_loop_ptr;
1172	#endif	1407	#endif
1173		1408
1174	if (backend)	1409	if (backend)
1175	postfork = 1;	1410	postfork = 1; /* must be in line with ev_loop_fork */
1176	}	1411	}
1177		1412
1178	/*****************************************************************************/	1413	/*****************************************************************************/
1179		1414
1180	void	1415	void
…		…
1206	void inline_size	1441	void inline_size
1207	timers_reify (EV_P)	1442	timers_reify (EV_P)
1208	{	1443	{
1209	while (timercnt && ((WT)timers [0])->at <= mn_now)	1444	while (timercnt && ((WT)timers [0])->at <= mn_now)
1210	{	1445	{
1211	ev_timer *w = timers [0];	1446	ev_timer w = (ev_timer )timers [0];
1212		1447
1213	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1448	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1214		1449
1215	/* first reschedule or stop timer */	1450	/* first reschedule or stop timer */
1216	if (w->repeat)	1451	if (w->repeat)
…		…
1219		1454
1220	((WT)w)->at += w->repeat;	1455	((WT)w)->at += w->repeat;
1221	if (((WT)w)->at < mn_now)	1456	if (((WT)w)->at < mn_now)
1222	((WT)w)->at = mn_now;	1457	((WT)w)->at = mn_now;
1223		1458
1224	downheap ((WT *)timers, timercnt, 0);	1459	downheap (timers, timercnt, 0);
1225	}	1460	}
1226	else	1461	else
1227	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1462	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1228		1463
1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1464	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1234	void inline_size	1469	void inline_size
1235	periodics_reify (EV_P)	1470	periodics_reify (EV_P)
1236	{	1471	{
1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1472	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1238	{	1473	{
1239	ev_periodic *w = periodics [0];	1474	ev_periodic w = (ev_periodic )periodics [0];
1240		1475
1241	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1476	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1242		1477
1243	/* first reschedule or stop timer */	1478	/* first reschedule or stop timer */
1244	if (w->reschedule_cb)	1479	if (w->reschedule_cb)
1245	{	1480	{
1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1481	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1482	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1248	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1249	}	1484	}
1250	else if (w->interval)	1485	else if (w->interval)
1251	{	1486	{
1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1487	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;	1488	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1489	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1255	downheap ((WT *)periodics, periodiccnt, 0);	1490	downheap (periodics, periodiccnt, 0);
1256	}	1491	}
1257	else	1492	else
1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1493	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1259		1494
1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1495	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1267	int i;	1502	int i;
1268		1503
1269	/* adjust periodics after time jump */	1504	/* adjust periodics after time jump */
1270	for (i = 0; i < periodiccnt; ++i)	1505	for (i = 0; i < periodiccnt; ++i)
1271	{	1506	{
1272	ev_periodic *w = periodics [i];	1507	ev_periodic w = (ev_periodic )periodics [i];
1273		1508
1274	if (w->reschedule_cb)	1509	if (w->reschedule_cb)
1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1510	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1276	else if (w->interval)	1511	else if (w->interval)
1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1512	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278	}	1513	}
1279		1514
1280	/* now rebuild the heap */	1515	/* now rebuild the heap */
1281	for (i = periodiccnt >> 1; i--; )	1516	for (i = periodiccnt >> 1; i--; )
1282	downheap ((WT *)periodics, periodiccnt, i);	1517	downheap (periodics, periodiccnt, i);
1283	}	1518	}
1284	#endif	1519	#endif
1285		1520
1286	#if EV_IDLE_ENABLE	1521	#if EV_IDLE_ENABLE
1287	void inline_size	1522	void inline_size
…		…
1389	static int loop_done;	1624	static int loop_done;
1390		1625
1391	void	1626	void
1392	ev_loop (EV_P_ int flags)	1627	ev_loop (EV_P_ int flags)
1393	{	1628	{
1394	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1629	loop_done = EVUNLOOP_CANCEL;
1395	? EVUNLOOP_ONE
1396	: EVUNLOOP_CANCEL;
1397		1630
1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1631	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1399		1632
1400	do	1633	do
1401	{	1634	{
…		…
1435	/* update fd-related kernel structures */	1668	/* update fd-related kernel structures */
1436	fd_reify (EV_A);	1669	fd_reify (EV_A);
1437		1670
1438	/* calculate blocking time */	1671	/* calculate blocking time */
1439	{	1672	{
1440	ev_tstamp block;	1673	ev_tstamp waittime = 0.;
		1674	ev_tstamp sleeptime = 0.;
1441		1675
1442	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1676	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1443	block = 0.; /* do not block at all */
1444	else
1445	{	1677	{
1446	/* update time to cancel out callback processing overhead */	1678	/* update time to cancel out callback processing overhead */
1447	time_update (EV_A_ 1e100);	1679	time_update (EV_A_ 1e100);
1448		1680
1449	block = MAX_BLOCKTIME;	1681	waittime = MAX_BLOCKTIME;
1450		1682
1451	if (timercnt)	1683	if (timercnt)
1452	{	1684	{
1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1685	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1454	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1455	}	1687	}
1456		1688
1457	#if EV_PERIODIC_ENABLE	1689	#if EV_PERIODIC_ENABLE
1458	if (periodiccnt)	1690	if (periodiccnt)
1459	{	1691	{
1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1692	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1461	if (block > to) block = to;	1693	if (waittime > to) waittime = to;
1462	}	1694	}
1463	#endif	1695	#endif
1464		1696
1465	if (expect_false (block < 0.)) block = 0.;	1697	if (expect_false (waittime < timeout_blocktime))
		1698	waittime = timeout_blocktime;
		1699
		1700	sleeptime = waittime - backend_fudge;
		1701
		1702	if (expect_true (sleeptime > io_blocktime))
		1703	sleeptime = io_blocktime;
		1704
		1705	if (sleeptime)
		1706	{
		1707	ev_sleep (sleeptime);
		1708	waittime -= sleeptime;
		1709	}
1466	}	1710	}
1467		1711
1468	++loop_count;	1712	++loop_count;
1469	backend_poll (EV_A_ block);	1713	backend_poll (EV_A_ waittime);
1470		1714
1471	/* update ev_rt_now, do magic */	1715	/* update ev_rt_now, do magic */
1472	time_update (EV_A_ block);	1716	time_update (EV_A_ waittime + sleeptime);
1473	}	1717	}
1474		1718
1475	/* queue pending timers and reschedule them */	1719	/* queue pending timers and reschedule them */
1476	timers_reify (EV_A); /* relative timers called last */	1720	timers_reify (EV_A); /* relative timers called last */
1477	#if EV_PERIODIC_ENABLE	1721	#if EV_PERIODIC_ENABLE
…		…
1486	/* queue check watchers, to be executed first */	1730	/* queue check watchers, to be executed first */
1487	if (expect_false (checkcnt))	1731	if (expect_false (checkcnt))
1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1732	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1489		1733
1490	call_pending (EV_A);	1734	call_pending (EV_A);
1491
1492	}	1735	}
1493	while (expect_true (activecnt && !loop_done));	1736	while (expect_true (
		1737	activecnt
		1738	&& !loop_done
		1739	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1740	));
1494		1741
1495	if (loop_done == EVUNLOOP_ONE)	1742	if (loop_done == EVUNLOOP_ONE)
1496	loop_done = EVUNLOOP_CANCEL;	1743	loop_done = EVUNLOOP_CANCEL;
1497	}	1744	}
1498		1745
…		…
1589		1836
1590	assert (("ev_io_start called with negative fd", fd >= 0));	1837	assert (("ev_io_start called with negative fd", fd >= 0));
1591		1838
1592	ev_start (EV_A_ (W)w, 1);	1839	ev_start (EV_A_ (W)w, 1);
1593	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1840	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1841	wlist_add (&anfds[fd].head, (WL)w);
1595		1842
1596	fd_change (EV_A_ fd);	1843	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1844	w->events &= ~EV_IOFDSET;
1597	}	1845	}
1598		1846
1599	void noinline	1847	void noinline
1600	ev_io_stop (EV_P_ ev_io *w)	1848	ev_io_stop (EV_P_ ev_io *w)
1601	{	1849	{
…		…
1603	if (expect_false (!ev_is_active (w)))	1851	if (expect_false (!ev_is_active (w)))
1604	return;	1852	return;
1605		1853
1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1854	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1607		1855
1608	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1856	wlist_del (&anfds[w->fd].head, (WL)w);
1609	ev_stop (EV_A_ (W)w);	1857	ev_stop (EV_A_ (W)w);
1610		1858
1611	fd_change (EV_A_ w->fd);	1859	fd_change (EV_A_ w->fd, 1);
1612	}	1860	}
1613		1861
1614	void noinline	1862	void noinline
1615	ev_timer_start (EV_P_ ev_timer *w)	1863	ev_timer_start (EV_P_ ev_timer *w)
1616	{	1864	{
…		…
1620	((WT)w)->at += mn_now;	1868	((WT)w)->at += mn_now;
1621		1869
1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1870	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1623		1871
1624	ev_start (EV_A_ (W)w, ++timercnt);	1872	ev_start (EV_A_ (W)w, ++timercnt);
1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1873	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1626	timers [timercnt - 1] = w;	1874	timers [timercnt - 1] = (WT)w;
1627	upheap ((WT *)timers, timercnt - 1);	1875	upheap (timers, timercnt - 1);
1628		1876
1629	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1877	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1630	}	1878	}
1631		1879
1632	void noinline	1880	void noinline
…		…
1634	{	1882	{
1635	clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1636	if (expect_false (!ev_is_active (w)))	1884	if (expect_false (!ev_is_active (w)))
1637	return;	1885	return;
1638		1886
1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1887	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1640		1888
1641	{	1889	{
1642	int active = ((W)w)->active;	1890	int active = ((W)w)->active;
1643		1891
1644	if (expect_true (--active < --timercnt))	1892	if (expect_true (--active < --timercnt))
1645	{	1893	{
1646	timers [active] = timers [timercnt];	1894	timers [active] = timers [timercnt];
1647	adjustheap ((WT *)timers, timercnt, active);	1895	adjustheap (timers, timercnt, active);
1648	}	1896	}
1649	}	1897	}
1650		1898
1651	((WT)w)->at -= mn_now;	1899	((WT)w)->at -= mn_now;
1652		1900
…		…
1659	if (ev_is_active (w))	1907	if (ev_is_active (w))
1660	{	1908	{
1661	if (w->repeat)	1909	if (w->repeat)
1662	{	1910	{
1663	((WT)w)->at = mn_now + w->repeat;	1911	((WT)w)->at = mn_now + w->repeat;
1664	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1912	adjustheap (timers, timercnt, ((W)w)->active - 1);
1665	}	1913	}
1666	else	1914	else
1667	ev_timer_stop (EV_A_ w);	1915	ev_timer_stop (EV_A_ w);
1668	}	1916	}
1669	else if (w->repeat)	1917	else if (w->repeat)
…		…
1690	}	1938	}
1691	else	1939	else
1692	((WT)w)->at = w->offset;	1940	((WT)w)->at = w->offset;
1693		1941
1694	ev_start (EV_A_ (W)w, ++periodiccnt);	1942	ev_start (EV_A_ (W)w, ++periodiccnt);
1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1943	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1696	periodics [periodiccnt - 1] = w;	1944	periodics [periodiccnt - 1] = (WT)w;
1697	upheap ((WT *)periodics, periodiccnt - 1);	1945	upheap (periodics, periodiccnt - 1);
1698		1946
1699	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1947	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1700	}	1948	}
1701		1949
1702	void noinline	1950	void noinline
…		…
1704	{	1952	{
1705	clear_pending (EV_A_ (W)w);	1953	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	1954	if (expect_false (!ev_is_active (w)))
1707	return;	1955	return;
1708		1956
1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1957	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1710		1958
1711	{	1959	{
1712	int active = ((W)w)->active;	1960	int active = ((W)w)->active;
1713		1961
1714	if (expect_true (--active < --periodiccnt))	1962	if (expect_true (--active < --periodiccnt))
1715	{	1963	{
1716	periodics [active] = periodics [periodiccnt];	1964	periodics [active] = periodics [periodiccnt];
1717	adjustheap ((WT *)periodics, periodiccnt, active);	1965	adjustheap (periodics, periodiccnt, active);
1718	}	1966	}
1719	}	1967	}
1720		1968
1721	ev_stop (EV_A_ (W)w);	1969	ev_stop (EV_A_ (W)w);
1722	}	1970	}
…		…
1743	if (expect_false (ev_is_active (w)))	1991	if (expect_false (ev_is_active (w)))
1744	return;	1992	return;
1745		1993
1746	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1994	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1747		1995
		1996	evpipe_init (EV_A);
		1997
		1998	{
		1999	#ifndef _WIN32
		2000	sigset_t full, prev;
		2001	sigfillset (&full);
		2002	sigprocmask (SIG_SETMASK, &full, &prev);
		2003	#endif
		2004
		2005	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2006
		2007	#ifndef _WIN32
		2008	sigprocmask (SIG_SETMASK, &prev, 0);
		2009	#endif
		2010	}
		2011
1748	ev_start (EV_A_ (W)w, 1);	2012	ev_start (EV_A_ (W)w, 1);
1749	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1750	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2013	wlist_add (&signals [w->signum - 1].head, (WL)w);
1751		2014
1752	if (!((WL)w)->next)	2015	if (!((WL)w)->next)
1753	{	2016	{
1754	#if _WIN32	2017	#if _WIN32
1755	signal (w->signum, sighandler);	2018	signal (w->signum, ev_sighandler);
1756	#else	2019	#else
1757	struct sigaction sa;	2020	struct sigaction sa;
1758	sa.sa_handler = sighandler;	2021	sa.sa_handler = ev_sighandler;
1759	sigfillset (&sa.sa_mask);	2022	sigfillset (&sa.sa_mask);
1760	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2023	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1761	sigaction (w->signum, &sa, 0);	2024	sigaction (w->signum, &sa, 0);
1762	#endif	2025	#endif
1763	}	2026	}
…		…
1768	{	2031	{
1769	clear_pending (EV_A_ (W)w);	2032	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	2033	if (expect_false (!ev_is_active (w)))
1771	return;	2034	return;
1772		2035
1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2036	wlist_del (&signals [w->signum - 1].head, (WL)w);
1774	ev_stop (EV_A_ (W)w);	2037	ev_stop (EV_A_ (W)w);
1775		2038
1776	if (!signals [w->signum - 1].head)	2039	if (!signals [w->signum - 1].head)
1777	signal (w->signum, SIG_DFL);	2040	signal (w->signum, SIG_DFL);
1778	}	2041	}
…		…
1785	#endif	2048	#endif
1786	if (expect_false (ev_is_active (w)))	2049	if (expect_false (ev_is_active (w)))
1787	return;	2050	return;
1788		2051
1789	ev_start (EV_A_ (W)w, 1);	2052	ev_start (EV_A_ (W)w, 1);
1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2053	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1791	}	2054	}
1792		2055
1793	void	2056	void
1794	ev_child_stop (EV_P_ ev_child *w)	2057	ev_child_stop (EV_P_ ev_child *w)
1795	{	2058	{
1796	clear_pending (EV_A_ (W)w);	2059	clear_pending (EV_A_ (W)w);
1797	if (expect_false (!ev_is_active (w)))	2060	if (expect_false (!ev_is_active (w)))
1798	return;	2061	return;
1799		2062
1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2063	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1801	ev_stop (EV_A_ (W)w);	2064	ev_stop (EV_A_ (W)w);
1802	}	2065	}
1803		2066
1804	#if EV_STAT_ENABLE	2067	#if EV_STAT_ENABLE
1805		2068
…		…
2147		2410
2148	#if EV_EMBED_ENABLE	2411	#if EV_EMBED_ENABLE
2149	void noinline	2412	void noinline
2150	ev_embed_sweep (EV_P_ ev_embed *w)	2413	ev_embed_sweep (EV_P_ ev_embed *w)
2151	{	2414	{
2152	ev_loop (w->loop, EVLOOP_NONBLOCK);	2415	ev_loop (w->other, EVLOOP_NONBLOCK);
2153	}	2416	}
2154		2417
2155	static void	2418	static void
2156	embed_cb (EV_P_ ev_io *io, int revents)	2419	embed_io_cb (EV_P_ ev_io *io, int revents)
2157	{	2420	{
2158	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2421	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2159		2422
2160	if (ev_cb (w))	2423	if (ev_cb (w))
2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2424	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2162	else	2425	else
2163	ev_embed_sweep (loop, w);	2426	ev_loop (w->other, EVLOOP_NONBLOCK);
2164	}	2427	}
		2428
		2429	static void
		2430	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2431	{
		2432	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2433
		2434	{
		2435	struct ev_loop *loop = w->other;
		2436
		2437	while (fdchangecnt)
		2438	{
		2439	fd_reify (EV_A);
		2440	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2441	}
		2442	}
		2443	}
		2444
		2445	#if 0
		2446	static void
		2447	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2448	{
		2449	ev_idle_stop (EV_A_ idle);
		2450	}
		2451	#endif
2165		2452
2166	void	2453	void
2167	ev_embed_start (EV_P_ ev_embed *w)	2454	ev_embed_start (EV_P_ ev_embed *w)
2168	{	2455	{
2169	if (expect_false (ev_is_active (w)))	2456	if (expect_false (ev_is_active (w)))
2170	return;	2457	return;
2171		2458
2172	{	2459	{
2173	struct ev_loop *loop = w->loop;	2460	struct ev_loop *loop = w->other;
2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2461	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2462	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2176	}	2463	}
2177		2464
2178	ev_set_priority (&w->io, ev_priority (w));	2465	ev_set_priority (&w->io, ev_priority (w));
2179	ev_io_start (EV_A_ &w->io);	2466	ev_io_start (EV_A_ &w->io);
2180		2467
		2468	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2469	ev_set_priority (&w->prepare, EV_MINPRI);
		2470	ev_prepare_start (EV_A_ &w->prepare);
		2471
		2472	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2473
2181	ev_start (EV_A_ (W)w, 1);	2474	ev_start (EV_A_ (W)w, 1);
2182	}	2475	}
2183		2476
2184	void	2477	void
2185	ev_embed_stop (EV_P_ ev_embed *w)	2478	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2187	clear_pending (EV_A_ (W)w);	2480	clear_pending (EV_A_ (W)w);
2188	if (expect_false (!ev_is_active (w)))	2481	if (expect_false (!ev_is_active (w)))
2189	return;	2482	return;
2190		2483
2191	ev_io_stop (EV_A_ &w->io);	2484	ev_io_stop (EV_A_ &w->io);
		2485	ev_prepare_stop (EV_A_ &w->prepare);
2192		2486
2193	ev_stop (EV_A_ (W)w);	2487	ev_stop (EV_A_ (W)w);
2194	}	2488	}
2195	#endif	2489	#endif
2196		2490
…		…
2221		2515
2222	ev_stop (EV_A_ (W)w);	2516	ev_stop (EV_A_ (W)w);
2223	}	2517	}
2224	#endif	2518	#endif
2225		2519
		2520	#if EV_ASYNC_ENABLE
		2521	void
		2522	ev_async_start (EV_P_ ev_async *w)
		2523	{
		2524	if (expect_false (ev_is_active (w)))
		2525	return;
		2526
		2527	evpipe_init (EV_A);
		2528
		2529	ev_start (EV_A_ (W)w, ++asynccnt);
		2530	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2531	asyncs [asynccnt - 1] = w;
		2532	}
		2533
		2534	void
		2535	ev_async_stop (EV_P_ ev_async *w)
		2536	{
		2537	clear_pending (EV_A_ (W)w);
		2538	if (expect_false (!ev_is_active (w)))
		2539	return;
		2540
		2541	{
		2542	int active = ((W)w)->active;
		2543	asyncs [active - 1] = asyncs [--asynccnt];
		2544	((W)asyncs [active - 1])->active = active;
		2545	}
		2546
		2547	ev_stop (EV_A_ (W)w);
		2548	}
		2549
		2550	void
		2551	ev_async_send (EV_P_ ev_async *w)
		2552	{
		2553	w->sent = 1;
		2554	evpipe_write (EV_A_ &gotasync);
		2555	}
		2556	#endif
		2557
2226	/*****************************************************************************/	2558	/*****************************************************************************/
2227		2559
2228	struct ev_once	2560	struct ev_once
2229	{	2561	{
2230	ev_io io;	2562	ev_io io;
…		…
2285	ev_timer_set (&once->to, timeout, 0.);	2617	ev_timer_set (&once->to, timeout, 0.);
2286	ev_timer_start (EV_A_ &once->to);	2618	ev_timer_start (EV_A_ &once->to);
2287	}	2619	}
2288	}	2620	}
2289		2621
		2622	#if EV_MULTIPLICITY
		2623	#include "ev_wrap.h"
		2624	#endif
		2625
2290	#ifdef __cplusplus	2626	#ifdef __cplusplus
2291	}	2627	}
2292	#endif	2628	#endif
2293		2629

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Comparing libev/ev.c (file contents): Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs. Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.178 by root, Tue Dec 11 18:36:11 2007 UTC vs.
Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC