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

Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.223 by root, Sun Apr 6 14:34:50 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
241	# if __STDC_VERSION__ < 199901L	305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	306	# define inline
243	# endif	307	# endif
244	#endif	308	#endif
245		309
246	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
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
…		…
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
…		…
652	k = p;	758	k = p;
653	}	759	}
654		760
655	heap [k] = w;	761	heap [k] = w;
656	((W)heap [k])->active = k + 1;	762	((W)heap [k])->active = k + 1;
657
658	}	763	}
659		764
660	void inline_speed	765	void inline_speed
661	downheap (WT *heap, int N, int k)	766	downheap (WT *heap, int N, int k)
662	{	767	{
…		…
695	/*****************************************************************************/	800	/*****************************************************************************/
696		801
697	typedef struct	802	typedef struct
698	{	803	{
699	WL head;	804	WL head;
700	sig_atomic_t volatile gotsig;	805	EV_ATOMIC_T gotsig;
701	} ANSIG;	806	} ANSIG;
702		807
703	static ANSIG *signals;	808	static ANSIG *signals;
704	static int signalmax;	809	static int signalmax;
705		810
706	static int sigpipe [2];	811	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		812
710	void inline_size	813	void inline_size
711	signals_init (ANSIG *base, int count)	814	signals_init (ANSIG *base, int count)
712	{	815	{
713	while (count--)	816	while (count--)
…		…
717		820
718	++base;	821	++base;
719	}	822	}
720	}	823	}
721		824
722	static void	825	/*****************************************************************************/
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		826
773	void inline_speed	827	void inline_speed
774	fd_intern (int fd)	828	fd_intern (int fd)
775	{	829	{
776	#ifdef _WIN32	830	#ifdef _WIN32
…		…
781	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	836	#endif
783	}	837	}
784		838
785	static void noinline	839	static void noinline
786	siginit (EV_P)	840	evpipe_init (EV_P)
787	{	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
788	fd_intern (sigpipe [0]);	857	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	858	fd_intern (evpipe [1]);
		859	ev_io_set (&pipeev, evpipe [0], EV_READ);
		860	}
790		861
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	862	ev_io_start (EV_A_ &pipeev);
793	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
794	}	930	}
795		931
796	/*****************************************************************************/	932	/*****************************************************************************/
797		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
798	static ev_child *childs [EV_PID_HASHSIZE];	971	static WL childs [EV_PID_HASHSIZE];
799		972
800	#ifndef _WIN32	973	#ifndef _WIN32
801		974
802	static ev_signal childev;	975	static ev_signal childev;
803		976
		977	#ifndef WIFCONTINUED
		978	# define WIFCONTINUED(status) 0
		979	#endif
		980
804	void inline_speed	981	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	982	child_reap (EV_P_ int chain, int pid, int status)
806	{	983	{
807	ev_child *w;	984	ev_child *w;
		985	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
808		986
809	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	{
810	if (w->pid == pid \|\| !w->pid)	989	if ((w->pid == pid \|\| !w->pid)
		990	&& (!traced \|\| (w->flags & 1)))
811	{	991	{
812	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 */
813	w->rpid = pid;	993	w->rpid = pid;
814	w->rstatus = status;	994	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	995	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	996	}
		997	}
817	}	998	}
818		999
819	#ifndef WCONTINUED	1000	#ifndef WCONTINUED
820	# define WCONTINUED 0	1001	# define WCONTINUED 0
821	#endif	1002	#endif
…		…
830	if (!WCONTINUED	1011	if (!WCONTINUED
831	\|\| errno != EINVAL	1012	\|\| errno != EINVAL
832	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1013	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
833	return;	1014	return;
834		1015
835	/* 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 */
836	/* 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 */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1018	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1019
839	child_reap (EV_A_ sw, pid, pid, status);	1020	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1021	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 */	1022	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1023	}
843		1024
844	#endif	1025	#endif
845		1026
846	/*****************************************************************************/	1027	/*****************************************************************************/
…		…
918	}	1099	}
919		1100
920	unsigned int	1101	unsigned int
921	ev_embeddable_backends (void)	1102	ev_embeddable_backends (void)
922	{	1103	{
923	return EVBACKEND_EPOLL	1104	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
924	\| EVBACKEND_KQUEUE	1105
925	\| 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;
926	}	1111	}
927		1112
928	unsigned int	1113	unsigned int
929	ev_backend (EV_P)	1114	ev_backend (EV_P)
930	{	1115	{
…		…
933		1118
934	unsigned int	1119	unsigned int
935	ev_loop_count (EV_P)	1120	ev_loop_count (EV_P)
936	{	1121	{
937	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;
938	}	1135	}
939		1136
940	static void noinline	1137	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1138	loop_init (EV_P_ unsigned int flags)
942	{	1139	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1145	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1146	have_monotonic = 1;
950	}	1147	}
951	#endif	1148	#endif
952		1149
953	ev_rt_now = ev_time ();	1150	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1151	mn_now = get_clock ();
955	now_floor = mn_now;	1152	now_floor = mn_now;
956	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
957		1163
958	/* pid check not overridable via env */	1164	/* pid check not overridable via env */
959	#ifndef _WIN32	1165	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1166	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1167	curpid = getpid ();
…		…
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1173	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1174
969	if (!(flags & 0x0000ffffUL))	1175	if (!(flags & 0x0000ffffUL))
970	flags \|= ev_recommended_backends ();	1176	flags \|= ev_recommended_backends ();
971		1177
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977
978	#if EV_USE_PORT	1178	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1179	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1180	#endif
981	#if EV_USE_KQUEUE	1181	#if EV_USE_KQUEUE
982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1182	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
989	#endif	1189	#endif
990	#if EV_USE_SELECT	1190	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1191	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1192	#endif
993		1193
994	ev_init (&sigev, sigcb);	1194	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1195	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1196	}
997	}	1197	}
998		1198
999	static void noinline	1199	static void noinline
1000	loop_destroy (EV_P)	1200	loop_destroy (EV_P)
1001	{	1201	{
1002	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	}
1003		1220
1004	#if EV_USE_INOTIFY	1221	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1222	if (fs_fd >= 0)
1006	close (fs_fd);	1223	close (fs_fd);
1007	#endif	1224	#endif
…		…
1030	array_free (pending, [i]);	1247	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1248	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1249	array_free (idle, [i]);
1033	#endif	1250	#endif
1034	}	1251	}
		1252
		1253	ev_free (anfds); anfdmax = 0;
1035		1254
1036	/* have to use the microsoft-never-gets-it-right macro */	1255	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1256	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1257	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1258	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1259	array_free (periodic, EMPTY);
1041	#endif	1260	#endif
		1261	#if EV_FORK_ENABLE
		1262	array_free (fork, EMPTY);
		1263	#endif
1042	array_free (prepare, EMPTY);	1264	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1265	array_free (check, EMPTY);
		1266	#if EV_ASYNC_ENABLE
		1267	array_free (async, EMPTY);
		1268	#endif
1044		1269
1045	backend = 0;	1270	backend = 0;
1046	}	1271	}
1047		1272
1048	void inline_size infy_fork (EV_P);	1273	void inline_size infy_fork (EV_P);
…		…
1061	#endif	1286	#endif
1062	#if EV_USE_INOTIFY	1287	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1288	infy_fork (EV_A);
1064	#endif	1289	#endif
1065		1290
1066	if (ev_is_active (&sigev))	1291	if (ev_is_active (&pipeev))
1067	{	1292	{
1068	/* 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
1069		1299
1070	ev_ref (EV_A);	1300	ev_ref (EV_A);
1071	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	{
1072	close (sigpipe [0]);	1310	close (evpipe [0]);
1073	close (sigpipe [1]);	1311	close (evpipe [1]);
		1312	}
1074		1313
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	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);
1079	}	1317	}
1080		1318
1081	postfork = 0;	1319	postfork = 0;
1082	}	1320	}
1083		1321
…		…
1105	}	1343	}
1106		1344
1107	void	1345	void
1108	ev_loop_fork (EV_P)	1346	ev_loop_fork (EV_P)
1109	{	1347	{
1110	postfork = 1;	1348	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1349	}
1112		1350
1113	#endif	1351	#endif
1114		1352
1115	#if EV_MULTIPLICITY	1353	#if EV_MULTIPLICITY
…		…
1118	#else	1356	#else
1119	int	1357	int
1120	ev_default_loop (unsigned int flags)	1358	ev_default_loop (unsigned int flags)
1121	#endif	1359	#endif
1122	{	1360	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1361	if (!ev_default_loop_ptr)
1128	{	1362	{
1129	#if EV_MULTIPLICITY	1363	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1364	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1365	#else
…		…
1134		1368
1135	loop_init (EV_A_ flags);	1369	loop_init (EV_A_ flags);
1136		1370
1137	if (ev_backend (EV_A))	1371	if (ev_backend (EV_A))
1138	{	1372	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1373	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1374	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1375	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1376	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1377	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1394	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1395	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1396	ev_signal_stop (EV_A_ &childev);
1165	#endif	1397	#endif
1166		1398
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);	1399	loop_destroy (EV_A);
1174	}	1400	}
1175		1401
1176	void	1402	void
1177	ev_default_fork (void)	1403	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1405	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1406	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1407	#endif
1182		1408
1183	if (backend)	1409	if (backend)
1184	postfork = 1;	1410	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1411	}
1186		1412
1187	/*****************************************************************************/	1413	/*****************************************************************************/
1188		1414
1189	void	1415	void
…		…
1215	void inline_size	1441	void inline_size
1216	timers_reify (EV_P)	1442	timers_reify (EV_P)
1217	{	1443	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)	1444	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{	1445	{
1220	ev_timer *w = timers [0];	1446	ev_timer w = (ev_timer )timers [0];
1221		1447
1222	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1448	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1223		1449
1224	/* first reschedule or stop timer */	1450	/* first reschedule or stop timer */
1225	if (w->repeat)	1451	if (w->repeat)
…		…
1228		1454
1229	((WT)w)->at += w->repeat;	1455	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)	1456	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;	1457	((WT)w)->at = mn_now;
1232		1458
1233	downheap ((WT *)timers, timercnt, 0);	1459	downheap (timers, timercnt, 0);
1234	}	1460	}
1235	else	1461	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1462	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237		1463
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1464	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1243	void inline_size	1469	void inline_size
1244	periodics_reify (EV_P)	1470	periodics_reify (EV_P)
1245	{	1471	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1472	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{	1473	{
1248	ev_periodic *w = periodics [0];	1474	ev_periodic w = (ev_periodic )periodics [0];
1249		1475
1250	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1476	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1251		1477
1252	/* first reschedule or stop timer */	1478	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)	1479	if (w->reschedule_cb)
1254	{	1480	{
1255	((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);
1256	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));
1257	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1258	}	1484	}
1259	else if (w->interval)	1485	else if (w->interval)
1260	{	1486	{
1261	((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;
1262	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;
1263	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));
1264	downheap ((WT *)periodics, periodiccnt, 0);	1490	downheap (periodics, periodiccnt, 0);
1265	}	1491	}
1266	else	1492	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1493	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268		1494
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1495	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1276	int i;	1502	int i;
1277		1503
1278	/* adjust periodics after time jump */	1504	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)	1505	for (i = 0; i < periodiccnt; ++i)
1280	{	1506	{
1281	ev_periodic *w = periodics [i];	1507	ev_periodic w = (ev_periodic )periodics [i];
1282		1508
1283	if (w->reschedule_cb)	1509	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1510	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)	1511	else if (w->interval)
1286	((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;
1287	}	1513	}
1288		1514
1289	/* now rebuild the heap */	1515	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )	1516	for (i = periodiccnt >> 1; i--; )
1291	downheap ((WT *)periodics, periodiccnt, i);	1517	downheap (periodics, periodiccnt, i);
1292	}	1518	}
1293	#endif	1519	#endif
1294		1520
1295	#if EV_IDLE_ENABLE	1521	#if EV_IDLE_ENABLE
1296	void inline_size	1522	void inline_size
…		…
1398	static int loop_done;	1624	static int loop_done;
1399		1625
1400	void	1626	void
1401	ev_loop (EV_P_ int flags)	1627	ev_loop (EV_P_ int flags)
1402	{	1628	{
1403	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1629	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1630
1407	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 */
1408		1632
1409	do	1633	do
1410	{	1634	{
…		…
1444	/* update fd-related kernel structures */	1668	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1669	fd_reify (EV_A);
1446		1670
1447	/* calculate blocking time */	1671	/* calculate blocking time */
1448	{	1672	{
1449	ev_tstamp block;	1673	ev_tstamp waittime = 0.;
		1674	ev_tstamp sleeptime = 0.;
1450		1675
1451	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1676	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1677	{
1455	/* update time to cancel out callback processing overhead */	1678	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1679	time_update (EV_A_ 1e100);
1457		1680
1458	block = MAX_BLOCKTIME;	1681	waittime = MAX_BLOCKTIME;
1459		1682
1460	if (timercnt)	1683	if (timercnt)
1461	{	1684	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1685	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1463	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1464	}	1687	}
1465		1688
1466	#if EV_PERIODIC_ENABLE	1689	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1690	if (periodiccnt)
1468	{	1691	{
1469	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;
1470	if (block > to) block = to;	1693	if (waittime > to) waittime = to;
1471	}	1694	}
1472	#endif	1695	#endif
1473		1696
1474	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	}
1475	}	1710	}
1476		1711
1477	++loop_count;	1712	++loop_count;
1478	backend_poll (EV_A_ block);	1713	backend_poll (EV_A_ waittime);
1479		1714
1480	/* update ev_rt_now, do magic */	1715	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	1716	time_update (EV_A_ waittime + sleeptime);
1482	}	1717	}
1483		1718
1484	/* queue pending timers and reschedule them */	1719	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	1720	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	1721	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	1730	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	1731	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1732	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		1733
1499	call_pending (EV_A);	1734	call_pending (EV_A);
1500
1501	}	1735	}
1502	while (expect_true (activecnt && !loop_done));	1736	while (expect_true (
		1737	activecnt
		1738	&& !loop_done
		1739	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1740	));
1503		1741
1504	if (loop_done == EVUNLOOP_ONE)	1742	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	1743	loop_done = EVUNLOOP_CANCEL;
1506	}	1744	}
1507		1745
…		…
1598		1836
1599	assert (("ev_io_start called with negative fd", fd >= 0));	1837	assert (("ev_io_start called with negative fd", fd >= 0));
1600		1838
1601	ev_start (EV_A_ (W)w, 1);	1839	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1840	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1841	wlist_add (&anfds[fd].head, (WL)w);
1604		1842
1605	fd_change (EV_A_ fd);	1843	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1844	w->events &= ~EV_IOFDSET;
1606	}	1845	}
1607		1846
1608	void noinline	1847	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	1848	ev_io_stop (EV_P_ ev_io *w)
1610	{	1849	{
…		…
1612	if (expect_false (!ev_is_active (w)))	1851	if (expect_false (!ev_is_active (w)))
1613	return;	1852	return;
1614		1853
1615	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));
1616		1855
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1856	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	1857	ev_stop (EV_A_ (W)w);
1619		1858
1620	fd_change (EV_A_ w->fd);	1859	fd_change (EV_A_ w->fd, 1);
1621	}	1860	}
1622		1861
1623	void noinline	1862	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	1863	ev_timer_start (EV_P_ ev_timer *w)
1625	{	1864	{
…		…
1629	((WT)w)->at += mn_now;	1868	((WT)w)->at += mn_now;
1630		1869
1631	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.));
1632		1871
1633	ev_start (EV_A_ (W)w, ++timercnt);	1872	ev_start (EV_A_ (W)w, ++timercnt);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1873	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1635	timers [timercnt - 1] = w;	1874	timers [timercnt - 1] = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	1875	upheap (timers, timercnt - 1);
1637		1876
1638	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1877	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1639	}	1878	}
1640		1879
1641	void noinline	1880	void noinline
…		…
1643	{	1882	{
1644	clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1884	if (expect_false (!ev_is_active (w)))
1646	return;	1885	return;
1647		1886
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1887	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1649		1888
1650	{	1889	{
1651	int active = ((W)w)->active;	1890	int active = ((W)w)->active;
1652		1891
1653	if (expect_true (--active < --timercnt))	1892	if (expect_true (--active < --timercnt))
1654	{	1893	{
1655	timers [active] = timers [timercnt];	1894	timers [active] = timers [timercnt];
1656	adjustheap ((WT *)timers, timercnt, active);	1895	adjustheap (timers, timercnt, active);
1657	}	1896	}
1658	}	1897	}
1659		1898
1660	((WT)w)->at -= mn_now;	1899	((WT)w)->at -= mn_now;
1661		1900
…		…
1668	if (ev_is_active (w))	1907	if (ev_is_active (w))
1669	{	1908	{
1670	if (w->repeat)	1909	if (w->repeat)
1671	{	1910	{
1672	((WT)w)->at = mn_now + w->repeat;	1911	((WT)w)->at = mn_now + w->repeat;
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1912	adjustheap (timers, timercnt, ((W)w)->active - 1);
1674	}	1913	}
1675	else	1914	else
1676	ev_timer_stop (EV_A_ w);	1915	ev_timer_stop (EV_A_ w);
1677	}	1916	}
1678	else if (w->repeat)	1917	else if (w->repeat)
…		…
1699	}	1938	}
1700	else	1939	else
1701	((WT)w)->at = w->offset;	1940	((WT)w)->at = w->offset;
1702		1941
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	1942	ev_start (EV_A_ (W)w, ++periodiccnt);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1943	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	1944	periodics [periodiccnt - 1] = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	1945	upheap (periodics, periodiccnt - 1);
1707		1946
1708	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1947	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1709	}	1948	}
1710		1949
1711	void noinline	1950	void noinline
…		…
1713	{	1952	{
1714	clear_pending (EV_A_ (W)w);	1953	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	1954	if (expect_false (!ev_is_active (w)))
1716	return;	1955	return;
1717		1956
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1957	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1719		1958
1720	{	1959	{
1721	int active = ((W)w)->active;	1960	int active = ((W)w)->active;
1722		1961
1723	if (expect_true (--active < --periodiccnt))	1962	if (expect_true (--active < --periodiccnt))
1724	{	1963	{
1725	periodics [active] = periodics [periodiccnt];	1964	periodics [active] = periodics [periodiccnt];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	1965	adjustheap (periodics, periodiccnt, active);
1727	}	1966	}
1728	}	1967	}
1729		1968
1730	ev_stop (EV_A_ (W)w);	1969	ev_stop (EV_A_ (W)w);
1731	}	1970	}
…		…
1751	#endif	1990	#endif
1752	if (expect_false (ev_is_active (w)))	1991	if (expect_false (ev_is_active (w)))
1753	return;	1992	return;
1754		1993
1755	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));
		1995
		1996	evpipe_init (EV_A);
1756		1997
1757	{	1998	{
1758	#ifndef _WIN32	1999	#ifndef _WIN32
1759	sigset_t full, prev;	2000	sigset_t full, prev;
1760	sigfillset (&full);	2001	sigfillset (&full);
…		…
1767	sigprocmask (SIG_SETMASK, &prev, 0);	2008	sigprocmask (SIG_SETMASK, &prev, 0);
1768	#endif	2009	#endif
1769	}	2010	}
1770		2011
1771	ev_start (EV_A_ (W)w, 1);	2012	ev_start (EV_A_ (W)w, 1);
1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2013	wlist_add (&signals [w->signum - 1].head, (WL)w);
1773		2014
1774	if (!((WL)w)->next)	2015	if (!((WL)w)->next)
1775	{	2016	{
1776	#if _WIN32	2017	#if _WIN32
1777	signal (w->signum, sighandler);	2018	signal (w->signum, ev_sighandler);
1778	#else	2019	#else
1779	struct sigaction sa;	2020	struct sigaction sa;
1780	sa.sa_handler = sighandler;	2021	sa.sa_handler = ev_sighandler;
1781	sigfillset (&sa.sa_mask);	2022	sigfillset (&sa.sa_mask);
1782	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 */
1783	sigaction (w->signum, &sa, 0);	2024	sigaction (w->signum, &sa, 0);
1784	#endif	2025	#endif
1785	}	2026	}
…		…
1790	{	2031	{
1791	clear_pending (EV_A_ (W)w);	2032	clear_pending (EV_A_ (W)w);
1792	if (expect_false (!ev_is_active (w)))	2033	if (expect_false (!ev_is_active (w)))
1793	return;	2034	return;
1794		2035
1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2036	wlist_del (&signals [w->signum - 1].head, (WL)w);
1796	ev_stop (EV_A_ (W)w);	2037	ev_stop (EV_A_ (W)w);
1797		2038
1798	if (!signals [w->signum - 1].head)	2039	if (!signals [w->signum - 1].head)
1799	signal (w->signum, SIG_DFL);	2040	signal (w->signum, SIG_DFL);
1800	}	2041	}
…		…
1807	#endif	2048	#endif
1808	if (expect_false (ev_is_active (w)))	2049	if (expect_false (ev_is_active (w)))
1809	return;	2050	return;
1810		2051
1811	ev_start (EV_A_ (W)w, 1);	2052	ev_start (EV_A_ (W)w, 1);
1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2053	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1813	}	2054	}
1814		2055
1815	void	2056	void
1816	ev_child_stop (EV_P_ ev_child *w)	2057	ev_child_stop (EV_P_ ev_child *w)
1817	{	2058	{
1818	clear_pending (EV_A_ (W)w);	2059	clear_pending (EV_A_ (W)w);
1819	if (expect_false (!ev_is_active (w)))	2060	if (expect_false (!ev_is_active (w)))
1820	return;	2061	return;
1821		2062
1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2063	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823	ev_stop (EV_A_ (W)w);	2064	ev_stop (EV_A_ (W)w);
1824	}	2065	}
1825		2066
1826	#if EV_STAT_ENABLE	2067	#if EV_STAT_ENABLE
1827		2068
…		…
2169		2410
2170	#if EV_EMBED_ENABLE	2411	#if EV_EMBED_ENABLE
2171	void noinline	2412	void noinline
2172	ev_embed_sweep (EV_P_ ev_embed *w)	2413	ev_embed_sweep (EV_P_ ev_embed *w)
2173	{	2414	{
2174	ev_loop (w->loop, EVLOOP_NONBLOCK);	2415	ev_loop (w->other, EVLOOP_NONBLOCK);
2175	}	2416	}
2176		2417
2177	static void	2418	static void
2178	embed_cb (EV_P_ ev_io *io, int revents)	2419	embed_io_cb (EV_P_ ev_io *io, int revents)
2179	{	2420	{
2180	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2421	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2181		2422
2182	if (ev_cb (w))	2423	if (ev_cb (w))
2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2424	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184	else	2425	else
2185	ev_embed_sweep (loop, w);	2426	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	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
2187		2452
2188	void	2453	void
2189	ev_embed_start (EV_P_ ev_embed *w)	2454	ev_embed_start (EV_P_ ev_embed *w)
2190	{	2455	{
2191	if (expect_false (ev_is_active (w)))	2456	if (expect_false (ev_is_active (w)))
2192	return;	2457	return;
2193		2458
2194	{	2459	{
2195	struct ev_loop *loop = w->loop;	2460	struct ev_loop *loop = w->other;
2196	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 ()));
2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2462	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198	}	2463	}
2199		2464
2200	ev_set_priority (&w->io, ev_priority (w));	2465	ev_set_priority (&w->io, ev_priority (w));
2201	ev_io_start (EV_A_ &w->io);	2466	ev_io_start (EV_A_ &w->io);
2202		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
2203	ev_start (EV_A_ (W)w, 1);	2474	ev_start (EV_A_ (W)w, 1);
2204	}	2475	}
2205		2476
2206	void	2477	void
2207	ev_embed_stop (EV_P_ ev_embed *w)	2478	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2209	clear_pending (EV_A_ (W)w);	2480	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2481	if (expect_false (!ev_is_active (w)))
2211	return;	2482	return;
2212		2483
2213	ev_io_stop (EV_A_ &w->io);	2484	ev_io_stop (EV_A_ &w->io);
		2485	ev_prepare_stop (EV_A_ &w->prepare);
2214		2486
2215	ev_stop (EV_A_ (W)w);	2487	ev_stop (EV_A_ (W)w);
2216	}	2488	}
2217	#endif	2489	#endif
2218		2490
…		…
2243		2515
2244	ev_stop (EV_A_ (W)w);	2516	ev_stop (EV_A_ (W)w);
2245	}	2517	}
2246	#endif	2518	#endif
2247		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
2248	/*****************************************************************************/	2558	/*****************************************************************************/
2249		2559
2250	struct ev_once	2560	struct ev_once
2251	{	2561	{
2252	ev_io io;	2562	ev_io io;
…		…
2307	ev_timer_set (&once->to, timeout, 0.);	2617	ev_timer_set (&once->to, timeout, 0.);
2308	ev_timer_start (EV_A_ &once->to);	2618	ev_timer_start (EV_A_ &once->to);
2309	}	2619	}
2310	}	2620	}
2311		2621
		2622	#if EV_MULTIPLICITY
		2623	#include "ev_wrap.h"
		2624	#endif
		2625
2312	#ifdef __cplusplus	2626	#ifdef __cplusplus
2313	}	2627	}
2314	#endif	2628	#endif
2315		2629

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Comparing libev/ev.c (file contents): Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs. Revision 1.223 by root, Sun Apr 6 14:34:50 2008 UTC

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Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.223 by root, Sun Apr 6 14:34:50 2008 UTC