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

Comparing libev/ev.c (file contents):
Revision 1.179 by root, Tue Dec 11 21:04:40 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 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
212	# define EV_USE_INOTIFY 0
213	#endif
214
215	#if EV_USE_INOTIFY	271	#if EV_USE_EVENTFD
216	# include <sys/inotify.h>	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	int eventfd (unsigned int initval, int flags);
217	#endif	274	#endif
218		275
219	/**/	276	/**/
220		277
221	/*	278	/*
…		…
230		287
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	288	#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) */	289	#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 */	290	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
234		291
235	#if __GNUC__ >= 3	292	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	293	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	294	# define noinline __attribute__ ((noinline))
238	#else	295	#else
239	# define expect(expr,value) (expr)	296	# define expect(expr,value) (expr)
240	# define noinline	297	# define noinline
…		…
261		318
262	typedef ev_watcher *W;	319	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	320	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	321	typedef ev_watcher_time *WT;
265		322
		323	#if EV_USE_MONOTONIC
		324	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		325	/* giving it a reasonably high chance of working on typical architetcures */
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	326	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		327	#endif
267		328
268	#ifdef _WIN32	329	#ifdef _WIN32
269	# include "ev_win32.c"	330	# include "ev_win32.c"
270	#endif	331	#endif
271		332
…		…
407	{	468	{
408	return ev_rt_now;	469	return ev_rt_now;
409	}	470	}
410	#endif	471	#endif
411		472
		473	void
		474	ev_sleep (ev_tstamp delay)
		475	{
		476	if (delay > 0.)
		477	{
		478	#if EV_USE_NANOSLEEP
		479	struct timespec ts;
		480
		481	ts.tv_sec = (time_t)delay;
		482	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		483
		484	nanosleep (&ts, 0);
		485	#elif defined(_WIN32)
		486	Sleep ((unsigned long)(delay * 1e3));
		487	#else
		488	struct timeval tv;
		489
		490	tv.tv_sec = (time_t)delay;
		491	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		492
		493	select (0, 0, 0, 0, &tv);
		494	#endif
		495	}
		496	}
		497
		498	/*****************************************************************************/
		499
412	int inline_size	500	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	501	array_nextsize (int elem, int cur, int cnt)
414	{	502	{
415	int ncur = cur + 1;	503	int ncur = cur + 1;
416		504
…		…
533	{	621	{
534	int fd = fdchanges [i];	622	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	623	ANFD *anfd = anfds + fd;
536	ev_io *w;	624	ev_io *w;
537		625
538	int events = 0;	626	unsigned char events = 0;
539		627
540	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	628	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
541	events \|= w->events;	629	events \|= (unsigned char)w->events;
542		630
543	#if EV_SELECT_IS_WINSOCKET	631	#if EV_SELECT_IS_WINSOCKET
544	if (events)	632	if (events)
545	{	633	{
546	unsigned long argp;	634	unsigned long argp;
		635	#ifdef EV_FD_TO_WIN32_HANDLE
		636	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		637	#else
547	anfd->handle = _get_osfhandle (fd);	638	anfd->handle = _get_osfhandle (fd);
		639	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	640	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	641	}
550	#endif	642	#endif
551		643
		644	{
		645	unsigned char o_events = anfd->events;
		646	unsigned char o_reify = anfd->reify;
		647
552	anfd->reify = 0;	648	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	649	anfd->events = events;
		650
		651	if (o_events != events \|\| o_reify & EV_IOFDSET)
		652	backend_modify (EV_A_ fd, o_events, events);
		653	}
556	}	654	}
557		655
558	fdchangecnt = 0;	656	fdchangecnt = 0;
559	}	657	}
560		658
561	void inline_size	659	void inline_size
562	fd_change (EV_P_ int fd)	660	fd_change (EV_P_ int fd, int flags)
563	{	661	{
564	if (expect_false (anfds [fd].reify))	662	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	663	anfds [fd].reify \|= flags;
568		664
		665	if (expect_true (!reify))
		666	{
569	++fdchangecnt;	667	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	668	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	669	fdchanges [fdchangecnt - 1] = fd;
		670	}
572	}	671	}
573		672
574	void inline_speed	673	void inline_speed
575	fd_kill (EV_P_ int fd)	674	fd_kill (EV_P_ int fd)
576	{	675	{
…		…
627		726
628	for (fd = 0; fd < anfdmax; ++fd)	727	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	728	if (anfds [fd].events)
630	{	729	{
631	anfds [fd].events = 0;	730	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	731	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
633	}	732	}
634	}	733	}
635		734
636	/*****************************************************************************/	735	/*****************************************************************************/
637		736
…		…
652	k = p;	751	k = p;
653	}	752	}
654		753
655	heap [k] = w;	754	heap [k] = w;
656	((W)heap [k])->active = k + 1;	755	((W)heap [k])->active = k + 1;
657
658	}	756	}
659		757
660	void inline_speed	758	void inline_speed
661	downheap (WT *heap, int N, int k)	759	downheap (WT *heap, int N, int k)
662	{	760	{
…		…
695	/*****************************************************************************/	793	/*****************************************************************************/
696		794
697	typedef struct	795	typedef struct
698	{	796	{
699	WL head;	797	WL head;
700	sig_atomic_t volatile gotsig;	798	EV_ATOMIC_T gotsig;
701	} ANSIG;	799	} ANSIG;
702		800
703	static ANSIG *signals;	801	static ANSIG *signals;
704	static int signalmax;	802	static int signalmax;
705		803
706	static int sigpipe [2];	804	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		805
710	void inline_size	806	void inline_size
711	signals_init (ANSIG *base, int count)	807	signals_init (ANSIG *base, int count)
712	{	808	{
713	while (count--)	809	while (count--)
…		…
717		813
718	++base;	814	++base;
719	}	815	}
720	}	816	}
721		817
722	static void	818	/*****************************************************************************/
723	sighandler (int signum)
724	{
725	#if _WIN32
726	signal (signum, sighandler);
727	#endif
728
729	signals [signum - 1].gotsig = 1;
730
731	if (!gotsig)
732	{
733	int old_errno = errno;
734	gotsig = 1;
735	write (sigpipe [1], &signum, 1);
736	errno = old_errno;
737	}
738	}
739
740	void noinline
741	ev_feed_signal_event (EV_P_ int signum)
742	{
743	WL w;
744
745	#if EV_MULTIPLICITY
746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747	#endif
748
749	--signum;
750
751	if (signum < 0 \|\| signum >= signalmax)
752	return;
753
754	signals [signum].gotsig = 0;
755
756	for (w = signals [signum].head; w; w = w->next)
757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758	}
759
760	static void
761	sigcb (EV_P_ ev_io *iow, int revents)
762	{
763	int signum;
764
765	read (sigpipe [0], &revents, 1);
766	gotsig = 0;
767
768	for (signum = signalmax; signum--; )
769	if (signals [signum].gotsig)
770	ev_feed_signal_event (EV_A_ signum + 1);
771	}
772		819
773	void inline_speed	820	void inline_speed
774	fd_intern (int fd)	821	fd_intern (int fd)
775	{	822	{
776	#ifdef _WIN32	823	#ifdef _WIN32
…		…
781	fcntl (fd, F_SETFL, O_NONBLOCK);	828	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	829	#endif
783	}	830	}
784		831
785	static void noinline	832	static void noinline
786	siginit (EV_P)	833	evpipe_init (EV_P)
787	{	834	{
		835	if (!ev_is_active (&pipeev))
		836	{
		837	#if EV_USE_EVENTFD
		838	if ((evfd = eventfd (0, 0)) >= 0)
		839	{
		840	evpipe [0] = -1;
		841	fd_intern (evfd);
		842	ev_io_set (&pipeev, evfd, EV_READ);
		843	}
		844	else
		845	#endif
		846	{
		847	while (pipe (evpipe))
		848	syserr ("(libev) error creating signal/async pipe");
		849
788	fd_intern (sigpipe [0]);	850	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	851	fd_intern (evpipe [1]);
		852	ev_io_set (&pipeev, evpipe [0], EV_READ);
		853	}
790		854
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	855	ev_io_start (EV_A_ &pipeev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	856	ev_unref (EV_A); /* watcher should not keep loop alive */
		857	}
		858	}
		859
		860	void inline_size
		861	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		862	{
		863	if (!*flag)
		864	{
		865	int old_errno = errno; /* save errno because write might clobber it */
		866
		867	*flag = 1;
		868
		869	#if EV_USE_EVENTFD
		870	if (evfd >= 0)
		871	{
		872	uint64_t counter = 1;
		873	write (evfd, &counter, sizeof (uint64_t));
		874	}
		875	else
		876	#endif
		877	write (evpipe [1], &old_errno, 1);
		878
		879	errno = old_errno;
		880	}
		881	}
		882
		883	static void
		884	pipecb (EV_P_ ev_io *iow, int revents)
		885	{
		886	#if EV_USE_EVENTFD
		887	if (evfd >= 0)
		888	{
		889	uint64_t counter = 1;
		890	read (evfd, &counter, sizeof (uint64_t));
		891	}
		892	else
		893	#endif
		894	{
		895	char dummy;
		896	read (evpipe [0], &dummy, 1);
		897	}
		898
		899	if (gotsig && ev_is_default_loop (EV_A))
		900	{
		901	int signum;
		902	gotsig = 0;
		903
		904	for (signum = signalmax; signum--; )
		905	if (signals [signum].gotsig)
		906	ev_feed_signal_event (EV_A_ signum + 1);
		907	}
		908
		909	#if EV_ASYNC_ENABLE
		910	if (gotasync)
		911	{
		912	int i;
		913	gotasync = 0;
		914
		915	for (i = asynccnt; i--; )
		916	if (asyncs [i]->sent)
		917	{
		918	asyncs [i]->sent = 0;
		919	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		920	}
		921	}
		922	#endif
794	}	923	}
795		924
796	/*****************************************************************************/	925	/*****************************************************************************/
797		926
		927	static void
		928	ev_sighandler (int signum)
		929	{
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *loop = &default_loop_struct;
		932	#endif
		933
		934	#if _WIN32
		935	signal (signum, ev_sighandler);
		936	#endif
		937
		938	signals [signum - 1].gotsig = 1;
		939	evpipe_write (EV_A_ &gotsig);
		940	}
		941
		942	void noinline
		943	ev_feed_signal_event (EV_P_ int signum)
		944	{
		945	WL w;
		946
		947	#if EV_MULTIPLICITY
		948	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		949	#endif
		950
		951	--signum;
		952
		953	if (signum < 0 \|\| signum >= signalmax)
		954	return;
		955
		956	signals [signum].gotsig = 0;
		957
		958	for (w = signals [signum].head; w; w = w->next)
		959	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		960	}
		961
		962	/*****************************************************************************/
		963
798	static ev_child *childs [EV_PID_HASHSIZE];	964	static WL childs [EV_PID_HASHSIZE];
799		965
800	#ifndef _WIN32	966	#ifndef _WIN32
801		967
802	static ev_signal childev;	968	static ev_signal childev;
803		969
		970	#ifndef WIFCONTINUED
		971	# define WIFCONTINUED(status) 0
		972	#endif
		973
804	void inline_speed	974	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	975	child_reap (EV_P_ int chain, int pid, int status)
806	{	976	{
807	ev_child *w;	977	ev_child *w;
		978	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
808		979
809	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	980	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		981	{
810	if (w->pid == pid \|\| !w->pid)	982	if ((w->pid == pid \|\| !w->pid)
		983	&& (!traced \|\| (w->flags & 1)))
811	{	984	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	985	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
813	w->rpid = pid;	986	w->rpid = pid;
814	w->rstatus = status;	987	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	988	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	989	}
		990	}
817	}	991	}
818		992
819	#ifndef WCONTINUED	993	#ifndef WCONTINUED
820	# define WCONTINUED 0	994	# define WCONTINUED 0
821	#endif	995	#endif
…		…
830	if (!WCONTINUED	1004	if (!WCONTINUED
831	\|\| errno != EINVAL	1005	\|\| errno != EINVAL
832	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1006	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
833	return;	1007	return;
834		1008
835	/* make sure we are called again until all childs have been reaped */	1009	/* make sure we are called again until all children have been reaped */
836	/* we need to do it this way so that the callback gets called before we continue */	1010	/* we need to do it this way so that the callback gets called before we continue */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1011	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1012
839	child_reap (EV_A_ sw, pid, pid, status);	1013	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1014	if (EV_PID_HASHSIZE > 1)
841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1015	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1016	}
843		1017
844	#endif	1018	#endif
845		1019
846	/*****************************************************************************/	1020	/*****************************************************************************/
…		…
918	}	1092	}
919		1093
920	unsigned int	1094	unsigned int
921	ev_embeddable_backends (void)	1095	ev_embeddable_backends (void)
922	{	1096	{
923	return EVBACKEND_EPOLL	1097	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
924	\| EVBACKEND_KQUEUE	1098
925	\| EVBACKEND_PORT;	1099	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1100	/* please fix it and tell me how to detect the fix */
		1101	flags &= ~EVBACKEND_EPOLL;
		1102
		1103	return flags;
926	}	1104	}
927		1105
928	unsigned int	1106	unsigned int
929	ev_backend (EV_P)	1107	ev_backend (EV_P)
930	{	1108	{
…		…
933		1111
934	unsigned int	1112	unsigned int
935	ev_loop_count (EV_P)	1113	ev_loop_count (EV_P)
936	{	1114	{
937	return loop_count;	1115	return loop_count;
		1116	}
		1117
		1118	void
		1119	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1120	{
		1121	io_blocktime = interval;
		1122	}
		1123
		1124	void
		1125	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1126	{
		1127	timeout_blocktime = interval;
938	}	1128	}
939		1129
940	static void noinline	1130	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1131	loop_init (EV_P_ unsigned int flags)
942	{	1132	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1138	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1139	have_monotonic = 1;
950	}	1140	}
951	#endif	1141	#endif
952		1142
953	ev_rt_now = ev_time ();	1143	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1144	mn_now = get_clock ();
955	now_floor = mn_now;	1145	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1146	rtmn_diff = ev_rt_now - mn_now;
		1147
		1148	io_blocktime = 0.;
		1149	timeout_blocktime = 0.;
		1150	backend = 0;
		1151	backend_fd = -1;
		1152	gotasync = 0;
		1153	#if EV_USE_INOTIFY
		1154	fs_fd = -2;
		1155	#endif
957		1156
958	/* pid check not overridable via env */	1157	/* pid check not overridable via env */
959	#ifndef _WIN32	1158	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1159	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1160	curpid = getpid ();
…		…
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1166	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1167
969	if (!(flags & 0x0000ffffUL))	1168	if (!(flags & 0x0000ffffUL))
970	flags \|= ev_recommended_backends ();	1169	flags \|= ev_recommended_backends ();
971		1170
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977
978	#if EV_USE_PORT	1171	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1172	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1173	#endif
981	#if EV_USE_KQUEUE	1174	#if EV_USE_KQUEUE
982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1175	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
989	#endif	1182	#endif
990	#if EV_USE_SELECT	1183	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1184	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1185	#endif
993		1186
994	ev_init (&sigev, sigcb);	1187	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1188	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1189	}
997	}	1190	}
998		1191
999	static void noinline	1192	static void noinline
1000	loop_destroy (EV_P)	1193	loop_destroy (EV_P)
1001	{	1194	{
1002	int i;	1195	int i;
		1196
		1197	if (ev_is_active (&pipeev))
		1198	{
		1199	ev_ref (EV_A); /* signal watcher */
		1200	ev_io_stop (EV_A_ &pipeev);
		1201
		1202	#if EV_USE_EVENTFD
		1203	if (evfd >= 0)
		1204	close (evfd);
		1205	#endif
		1206
		1207	if (evpipe [0] >= 0)
		1208	{
		1209	close (evpipe [0]);
		1210	close (evpipe [1]);
		1211	}
		1212	}
1003		1213
1004	#if EV_USE_INOTIFY	1214	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1215	if (fs_fd >= 0)
1006	close (fs_fd);	1216	close (fs_fd);
1007	#endif	1217	#endif
…		…
1030	array_free (pending, [i]);	1240	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1241	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1242	array_free (idle, [i]);
1033	#endif	1243	#endif
1034	}	1244	}
		1245
		1246	ev_free (anfds); anfdmax = 0;
1035		1247
1036	/* have to use the microsoft-never-gets-it-right macro */	1248	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1249	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1250	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1251	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1252	array_free (periodic, EMPTY);
1041	#endif	1253	#endif
		1254	#if EV_FORK_ENABLE
		1255	array_free (fork, EMPTY);
		1256	#endif
1042	array_free (prepare, EMPTY);	1257	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1258	array_free (check, EMPTY);
		1259	#if EV_ASYNC_ENABLE
		1260	array_free (async, EMPTY);
		1261	#endif
1044		1262
1045	backend = 0;	1263	backend = 0;
1046	}	1264	}
1047		1265
1048	void inline_size infy_fork (EV_P);	1266	void inline_size infy_fork (EV_P);
…		…
1061	#endif	1279	#endif
1062	#if EV_USE_INOTIFY	1280	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1281	infy_fork (EV_A);
1064	#endif	1282	#endif
1065		1283
1066	if (ev_is_active (&sigev))	1284	if (ev_is_active (&pipeev))
1067	{	1285	{
1068	/* default loop */	1286	/* this "locks" the handlers against writing to the pipe */
		1287	/* while we modify the fd vars */
		1288	gotsig = 1;
		1289	#if EV_ASYNC_ENABLE
		1290	gotasync = 1;
		1291	#endif
1069		1292
1070	ev_ref (EV_A);	1293	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1294	ev_io_stop (EV_A_ &pipeev);
		1295
		1296	#if EV_USE_EVENTFD
		1297	if (evfd >= 0)
		1298	close (evfd);
		1299	#endif
		1300
		1301	if (evpipe [0] >= 0)
		1302	{
1072	close (sigpipe [0]);	1303	close (evpipe [0]);
1073	close (sigpipe [1]);	1304	close (evpipe [1]);
		1305	}
1074		1306
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1307	evpipe_init (EV_A);
		1308	/* now iterate over everything, in case we missed something */
		1309	pipecb (EV_A_ &pipeev, EV_READ);
1079	}	1310	}
1080		1311
1081	postfork = 0;	1312	postfork = 0;
1082	}	1313	}
1083		1314
…		…
1105	}	1336	}
1106		1337
1107	void	1338	void
1108	ev_loop_fork (EV_P)	1339	ev_loop_fork (EV_P)
1109	{	1340	{
1110	postfork = 1;	1341	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1342	}
1112		1343
1113	#endif	1344	#endif
1114		1345
1115	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
…		…
1118	#else	1349	#else
1119	int	1350	int
1120	ev_default_loop (unsigned int flags)	1351	ev_default_loop (unsigned int flags)
1121	#endif	1352	#endif
1122	{	1353	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1354	if (!ev_default_loop_ptr)
1128	{	1355	{
1129	#if EV_MULTIPLICITY	1356	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1357	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1358	#else
…		…
1134		1361
1135	loop_init (EV_A_ flags);	1362	loop_init (EV_A_ flags);
1136		1363
1137	if (ev_backend (EV_A))	1364	if (ev_backend (EV_A))
1138	{	1365	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1366	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1367	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1368	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1369	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1370	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1387	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1388	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1389	ev_signal_stop (EV_A_ &childev);
1165	#endif	1390	#endif
1166		1391
1167	ev_ref (EV_A); /* signal watcher */
1168	ev_io_stop (EV_A_ &sigev);
1169
1170	close (sigpipe [0]); sigpipe [0] = 0;
1171	close (sigpipe [1]); sigpipe [1] = 0;
1172
1173	loop_destroy (EV_A);	1392	loop_destroy (EV_A);
1174	}	1393	}
1175		1394
1176	void	1395	void
1177	ev_default_fork (void)	1396	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1398	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1399	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1400	#endif
1182		1401
1183	if (backend)	1402	if (backend)
1184	postfork = 1;	1403	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1404	}
1186		1405
1187	/*****************************************************************************/	1406	/*****************************************************************************/
1188		1407
1189	void	1408	void
…		…
1215	void inline_size	1434	void inline_size
1216	timers_reify (EV_P)	1435	timers_reify (EV_P)
1217	{	1436	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)	1437	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{	1438	{
1220	ev_timer *w = timers [0];	1439	ev_timer w = (ev_timer )timers [0];
1221		1440
1222	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1441	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1223		1442
1224	/* first reschedule or stop timer */	1443	/* first reschedule or stop timer */
1225	if (w->repeat)	1444	if (w->repeat)
…		…
1228		1447
1229	((WT)w)->at += w->repeat;	1448	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)	1449	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;	1450	((WT)w)->at = mn_now;
1232		1451
1233	downheap ((WT *)timers, timercnt, 0);	1452	downheap (timers, timercnt, 0);
1234	}	1453	}
1235	else	1454	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1455	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237		1456
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1457	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1243	void inline_size	1462	void inline_size
1244	periodics_reify (EV_P)	1463	periodics_reify (EV_P)
1245	{	1464	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1465	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{	1466	{
1248	ev_periodic *w = periodics [0];	1467	ev_periodic w = (ev_periodic )periodics [0];
1249		1468
1250	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1469	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1251		1470
1252	/* first reschedule or stop timer */	1471	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)	1472	if (w->reschedule_cb)
1254	{	1473	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1474	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1475	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap ((WT *)periodics, periodiccnt, 0);	1476	downheap (periodics, periodiccnt, 0);
1258	}	1477	}
1259	else if (w->interval)	1478	else if (w->interval)
1260	{	1479	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1480	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;	1481	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1482	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1265	}	1484	}
1266	else	1485	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1486	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268		1487
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1488	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1276	int i;	1495	int i;
1277		1496
1278	/* adjust periodics after time jump */	1497	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)	1498	for (i = 0; i < periodiccnt; ++i)
1280	{	1499	{
1281	ev_periodic *w = periodics [i];	1500	ev_periodic w = (ev_periodic )periodics [i];
1282		1501
1283	if (w->reschedule_cb)	1502	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1503	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)	1504	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1505	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}	1506	}
1288		1507
1289	/* now rebuild the heap */	1508	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )	1509	for (i = periodiccnt >> 1; i--; )
1291	downheap ((WT *)periodics, periodiccnt, i);	1510	downheap (periodics, periodiccnt, i);
1292	}	1511	}
1293	#endif	1512	#endif
1294		1513
1295	#if EV_IDLE_ENABLE	1514	#if EV_IDLE_ENABLE
1296	void inline_size	1515	void inline_size
…		…
1398	static int loop_done;	1617	static int loop_done;
1399		1618
1400	void	1619	void
1401	ev_loop (EV_P_ int flags)	1620	ev_loop (EV_P_ int flags)
1402	{	1621	{
1403	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1622	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1623
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1624	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1625
1409	do	1626	do
1410	{	1627	{
…		…
1444	/* update fd-related kernel structures */	1661	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1662	fd_reify (EV_A);
1446		1663
1447	/* calculate blocking time */	1664	/* calculate blocking time */
1448	{	1665	{
1449	ev_tstamp block;	1666	ev_tstamp waittime = 0.;
		1667	ev_tstamp sleeptime = 0.;
1450		1668
1451	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1669	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1670	{
1455	/* update time to cancel out callback processing overhead */	1671	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1672	time_update (EV_A_ 1e100);
1457		1673
1458	block = MAX_BLOCKTIME;	1674	waittime = MAX_BLOCKTIME;
1459		1675
1460	if (timercnt)	1676	if (timercnt)
1461	{	1677	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1678	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1463	if (block > to) block = to;	1679	if (waittime > to) waittime = to;
1464	}	1680	}
1465		1681
1466	#if EV_PERIODIC_ENABLE	1682	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1683	if (periodiccnt)
1468	{	1684	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1685	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1471	}	1687	}
1472	#endif	1688	#endif
1473		1689
1474	if (expect_false (block < 0.)) block = 0.;	1690	if (expect_false (waittime < timeout_blocktime))
		1691	waittime = timeout_blocktime;
		1692
		1693	sleeptime = waittime - backend_fudge;
		1694
		1695	if (expect_true (sleeptime > io_blocktime))
		1696	sleeptime = io_blocktime;
		1697
		1698	if (sleeptime)
		1699	{
		1700	ev_sleep (sleeptime);
		1701	waittime -= sleeptime;
		1702	}
1475	}	1703	}
1476		1704
1477	++loop_count;	1705	++loop_count;
1478	backend_poll (EV_A_ block);	1706	backend_poll (EV_A_ waittime);
1479		1707
1480	/* update ev_rt_now, do magic */	1708	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	1709	time_update (EV_A_ waittime + sleeptime);
1482	}	1710	}
1483		1711
1484	/* queue pending timers and reschedule them */	1712	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	1713	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	1714	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	1723	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	1724	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1725	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		1726
1499	call_pending (EV_A);	1727	call_pending (EV_A);
1500
1501	}	1728	}
1502	while (expect_true (activecnt && !loop_done));	1729	while (expect_true (
		1730	activecnt
		1731	&& !loop_done
		1732	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1733	));
1503		1734
1504	if (loop_done == EVUNLOOP_ONE)	1735	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	1736	loop_done = EVUNLOOP_CANCEL;
1506	}	1737	}
1507		1738
…		…
1598		1829
1599	assert (("ev_io_start called with negative fd", fd >= 0));	1830	assert (("ev_io_start called with negative fd", fd >= 0));
1600		1831
1601	ev_start (EV_A_ (W)w, 1);	1832	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1833	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1834	wlist_add (&anfds[fd].head, (WL)w);
1604		1835
1605	fd_change (EV_A_ fd);	1836	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1837	w->events &= ~EV_IOFDSET;
1606	}	1838	}
1607		1839
1608	void noinline	1840	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	1841	ev_io_stop (EV_P_ ev_io *w)
1610	{	1842	{
…		…
1612	if (expect_false (!ev_is_active (w)))	1844	if (expect_false (!ev_is_active (w)))
1613	return;	1845	return;
1614		1846
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1847	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		1848
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1849	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	1850	ev_stop (EV_A_ (W)w);
1619		1851
1620	fd_change (EV_A_ w->fd);	1852	fd_change (EV_A_ w->fd, 1);
1621	}	1853	}
1622		1854
1623	void noinline	1855	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	1856	ev_timer_start (EV_P_ ev_timer *w)
1625	{	1857	{
…		…
1629	((WT)w)->at += mn_now;	1861	((WT)w)->at += mn_now;
1630		1862
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1863	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		1864
1633	ev_start (EV_A_ (W)w, ++timercnt);	1865	ev_start (EV_A_ (W)w, ++timercnt);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1866	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1635	timers [timercnt - 1] = w;	1867	timers [timercnt - 1] = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	1868	upheap (timers, timercnt - 1);
1637		1869
1638	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1870	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1639	}	1871	}
1640		1872
1641	void noinline	1873	void noinline
…		…
1643	{	1875	{
1644	clear_pending (EV_A_ (W)w);	1876	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1877	if (expect_false (!ev_is_active (w)))
1646	return;	1878	return;
1647		1879
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1880	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1649		1881
1650	{	1882	{
1651	int active = ((W)w)->active;	1883	int active = ((W)w)->active;
1652		1884
1653	if (expect_true (--active < --timercnt))	1885	if (expect_true (--active < --timercnt))
1654	{	1886	{
1655	timers [active] = timers [timercnt];	1887	timers [active] = timers [timercnt];
1656	adjustheap ((WT *)timers, timercnt, active);	1888	adjustheap (timers, timercnt, active);
1657	}	1889	}
1658	}	1890	}
1659		1891
1660	((WT)w)->at -= mn_now;	1892	((WT)w)->at -= mn_now;
1661		1893
…		…
1668	if (ev_is_active (w))	1900	if (ev_is_active (w))
1669	{	1901	{
1670	if (w->repeat)	1902	if (w->repeat)
1671	{	1903	{
1672	((WT)w)->at = mn_now + w->repeat;	1904	((WT)w)->at = mn_now + w->repeat;
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1905	adjustheap (timers, timercnt, ((W)w)->active - 1);
1674	}	1906	}
1675	else	1907	else
1676	ev_timer_stop (EV_A_ w);	1908	ev_timer_stop (EV_A_ w);
1677	}	1909	}
1678	else if (w->repeat)	1910	else if (w->repeat)
…		…
1699	}	1931	}
1700	else	1932	else
1701	((WT)w)->at = w->offset;	1933	((WT)w)->at = w->offset;
1702		1934
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	1935	ev_start (EV_A_ (W)w, ++periodiccnt);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1936	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	1937	periodics [periodiccnt - 1] = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	1938	upheap (periodics, periodiccnt - 1);
1707		1939
1708	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1940	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1709	}	1941	}
1710		1942
1711	void noinline	1943	void noinline
…		…
1713	{	1945	{
1714	clear_pending (EV_A_ (W)w);	1946	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	1947	if (expect_false (!ev_is_active (w)))
1716	return;	1948	return;
1717		1949
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1950	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1719		1951
1720	{	1952	{
1721	int active = ((W)w)->active;	1953	int active = ((W)w)->active;
1722		1954
1723	if (expect_true (--active < --periodiccnt))	1955	if (expect_true (--active < --periodiccnt))
1724	{	1956	{
1725	periodics [active] = periodics [periodiccnt];	1957	periodics [active] = periodics [periodiccnt];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	1958	adjustheap (periodics, periodiccnt, active);
1727	}	1959	}
1728	}	1960	}
1729		1961
1730	ev_stop (EV_A_ (W)w);	1962	ev_stop (EV_A_ (W)w);
1731	}	1963	}
…		…
1752	if (expect_false (ev_is_active (w)))	1984	if (expect_false (ev_is_active (w)))
1753	return;	1985	return;
1754		1986
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1987	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1756		1988
		1989	evpipe_init (EV_A);
		1990
		1991	{
		1992	#ifndef _WIN32
		1993	sigset_t full, prev;
		1994	sigfillset (&full);
		1995	sigprocmask (SIG_SETMASK, &full, &prev);
		1996	#endif
		1997
		1998	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1999
		2000	#ifndef _WIN32
		2001	sigprocmask (SIG_SETMASK, &prev, 0);
		2002	#endif
		2003	}
		2004
1757	ev_start (EV_A_ (W)w, 1);	2005	ev_start (EV_A_ (W)w, 1);
1758	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1759	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2006	wlist_add (&signals [w->signum - 1].head, (WL)w);
1760		2007
1761	if (!((WL)w)->next)	2008	if (!((WL)w)->next)
1762	{	2009	{
1763	#if _WIN32	2010	#if _WIN32
1764	signal (w->signum, sighandler);	2011	signal (w->signum, ev_sighandler);
1765	#else	2012	#else
1766	struct sigaction sa;	2013	struct sigaction sa;
1767	sa.sa_handler = sighandler;	2014	sa.sa_handler = ev_sighandler;
1768	sigfillset (&sa.sa_mask);	2015	sigfillset (&sa.sa_mask);
1769	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2016	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1770	sigaction (w->signum, &sa, 0);	2017	sigaction (w->signum, &sa, 0);
1771	#endif	2018	#endif
1772	}	2019	}
…		…
1777	{	2024	{
1778	clear_pending (EV_A_ (W)w);	2025	clear_pending (EV_A_ (W)w);
1779	if (expect_false (!ev_is_active (w)))	2026	if (expect_false (!ev_is_active (w)))
1780	return;	2027	return;
1781		2028
1782	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2029	wlist_del (&signals [w->signum - 1].head, (WL)w);
1783	ev_stop (EV_A_ (W)w);	2030	ev_stop (EV_A_ (W)w);
1784		2031
1785	if (!signals [w->signum - 1].head)	2032	if (!signals [w->signum - 1].head)
1786	signal (w->signum, SIG_DFL);	2033	signal (w->signum, SIG_DFL);
1787	}	2034	}
…		…
1794	#endif	2041	#endif
1795	if (expect_false (ev_is_active (w)))	2042	if (expect_false (ev_is_active (w)))
1796	return;	2043	return;
1797		2044
1798	ev_start (EV_A_ (W)w, 1);	2045	ev_start (EV_A_ (W)w, 1);
1799	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2046	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1800	}	2047	}
1801		2048
1802	void	2049	void
1803	ev_child_stop (EV_P_ ev_child *w)	2050	ev_child_stop (EV_P_ ev_child *w)
1804	{	2051	{
1805	clear_pending (EV_A_ (W)w);	2052	clear_pending (EV_A_ (W)w);
1806	if (expect_false (!ev_is_active (w)))	2053	if (expect_false (!ev_is_active (w)))
1807	return;	2054	return;
1808		2055
1809	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2056	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1810	ev_stop (EV_A_ (W)w);	2057	ev_stop (EV_A_ (W)w);
1811	}	2058	}
1812		2059
1813	#if EV_STAT_ENABLE	2060	#if EV_STAT_ENABLE
1814		2061
…		…
2156		2403
2157	#if EV_EMBED_ENABLE	2404	#if EV_EMBED_ENABLE
2158	void noinline	2405	void noinline
2159	ev_embed_sweep (EV_P_ ev_embed *w)	2406	ev_embed_sweep (EV_P_ ev_embed *w)
2160	{	2407	{
2161	ev_loop (w->loop, EVLOOP_NONBLOCK);	2408	ev_loop (w->other, EVLOOP_NONBLOCK);
2162	}	2409	}
2163		2410
2164	static void	2411	static void
2165	embed_cb (EV_P_ ev_io *io, int revents)	2412	embed_io_cb (EV_P_ ev_io *io, int revents)
2166	{	2413	{
2167	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2414	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2168		2415
2169	if (ev_cb (w))	2416	if (ev_cb (w))
2170	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2417	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2171	else	2418	else
2172	ev_embed_sweep (loop, w);	2419	ev_loop (w->other, EVLOOP_NONBLOCK);
2173	}	2420	}
		2421
		2422	static void
		2423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2424	{
		2425	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2426
		2427	{
		2428	struct ev_loop *loop = w->other;
		2429
		2430	while (fdchangecnt)
		2431	{
		2432	fd_reify (EV_A);
		2433	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2434	}
		2435	}
		2436	}
		2437
		2438	#if 0
		2439	static void
		2440	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2441	{
		2442	ev_idle_stop (EV_A_ idle);
		2443	}
		2444	#endif
2174		2445
2175	void	2446	void
2176	ev_embed_start (EV_P_ ev_embed *w)	2447	ev_embed_start (EV_P_ ev_embed *w)
2177	{	2448	{
2178	if (expect_false (ev_is_active (w)))	2449	if (expect_false (ev_is_active (w)))
2179	return;	2450	return;
2180		2451
2181	{	2452	{
2182	struct ev_loop *loop = w->loop;	2453	struct ev_loop *loop = w->other;
2183	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2454	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2184	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2455	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2185	}	2456	}
2186		2457
2187	ev_set_priority (&w->io, ev_priority (w));	2458	ev_set_priority (&w->io, ev_priority (w));
2188	ev_io_start (EV_A_ &w->io);	2459	ev_io_start (EV_A_ &w->io);
2189		2460
		2461	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2462	ev_set_priority (&w->prepare, EV_MINPRI);
		2463	ev_prepare_start (EV_A_ &w->prepare);
		2464
		2465	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2466
2190	ev_start (EV_A_ (W)w, 1);	2467	ev_start (EV_A_ (W)w, 1);
2191	}	2468	}
2192		2469
2193	void	2470	void
2194	ev_embed_stop (EV_P_ ev_embed *w)	2471	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2196	clear_pending (EV_A_ (W)w);	2473	clear_pending (EV_A_ (W)w);
2197	if (expect_false (!ev_is_active (w)))	2474	if (expect_false (!ev_is_active (w)))
2198	return;	2475	return;
2199		2476
2200	ev_io_stop (EV_A_ &w->io);	2477	ev_io_stop (EV_A_ &w->io);
		2478	ev_prepare_stop (EV_A_ &w->prepare);
2201		2479
2202	ev_stop (EV_A_ (W)w);	2480	ev_stop (EV_A_ (W)w);
2203	}	2481	}
2204	#endif	2482	#endif
2205		2483
…		…
2230		2508
2231	ev_stop (EV_A_ (W)w);	2509	ev_stop (EV_A_ (W)w);
2232	}	2510	}
2233	#endif	2511	#endif
2234		2512
		2513	#if EV_ASYNC_ENABLE
		2514	void
		2515	ev_async_start (EV_P_ ev_async *w)
		2516	{
		2517	if (expect_false (ev_is_active (w)))
		2518	return;
		2519
		2520	evpipe_init (EV_A);
		2521
		2522	ev_start (EV_A_ (W)w, ++asynccnt);
		2523	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2524	asyncs [asynccnt - 1] = w;
		2525	}
		2526
		2527	void
		2528	ev_async_stop (EV_P_ ev_async *w)
		2529	{
		2530	clear_pending (EV_A_ (W)w);
		2531	if (expect_false (!ev_is_active (w)))
		2532	return;
		2533
		2534	{
		2535	int active = ((W)w)->active;
		2536	asyncs [active - 1] = asyncs [--asynccnt];
		2537	((W)asyncs [active - 1])->active = active;
		2538	}
		2539
		2540	ev_stop (EV_A_ (W)w);
		2541	}
		2542
		2543	void
		2544	ev_async_send (EV_P_ ev_async *w)
		2545	{
		2546	w->sent = 1;
		2547	evpipe_write (EV_A_ &gotasync);
		2548	}
		2549	#endif
		2550
2235	/*****************************************************************************/	2551	/*****************************************************************************/
2236		2552
2237	struct ev_once	2553	struct ev_once
2238	{	2554	{
2239	ev_io io;	2555	ev_io io;
…		…
2294	ev_timer_set (&once->to, timeout, 0.);	2610	ev_timer_set (&once->to, timeout, 0.);
2295	ev_timer_start (EV_A_ &once->to);	2611	ev_timer_start (EV_A_ &once->to);
2296	}	2612	}
2297	}	2613	}
2298		2614
		2615	#if EV_MULTIPLICITY
		2616	#include "ev_wrap.h"
		2617	#endif
		2618
2299	#ifdef __cplusplus	2619	#ifdef __cplusplus
2300	}	2620	}
2301	#endif	2621	#endif
2302		2622

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Comparing libev/ev.c (file contents): Revision 1.179 by root, Tue Dec 11 21:04:40 2007 UTC vs. Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.179 by root, Tue Dec 11 21:04:40 2007 UTC vs.
Revision 1.220 by root, Sun Apr 6 09:53:17 2008 UTC