[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 1.225 by root, Wed Apr 16 01:37:14 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
…		…
292	perror (msg);	360	perror (msg);
293	abort ();	361	abort ();
294	}	362	}
295	}	363	}
296		364
		365	static void *
		366	ev_realloc_emul (void *ptr, long size)
		367	{
		368	/* some systems, notably openbsd and darwin, fail to properly
		369	* implement realloc (x, 0) (as required by both ansi c-98 and
		370	* the single unix specification, so work around them here.
		371	*/
		372
		373	if (size)
		374	return realloc (ptr, size);
		375
		376	free (ptr);
		377	return 0;
		378	}
		379
297	static void (alloc)(void *ptr, long size);	380	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
298		381
299	void	382	void
300	ev_set_allocator (void (cb)(void *ptr, long size))	383	ev_set_allocator (void (cb)(void *ptr, long size))
301	{	384	{
302	alloc = cb;	385	alloc = cb;
303	}	386	}
304		387
305	inline_speed void *	388	inline_speed void *
306	ev_realloc (void *ptr, long size)	389	ev_realloc (void *ptr, long size)
307	{	390	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	391	ptr = alloc (ptr, size);
309		392
310	if (!ptr && size)	393	if (!ptr && size)
311	{	394	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	395	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	396	abort ();
…		…
407	{	490	{
408	return ev_rt_now;	491	return ev_rt_now;
409	}	492	}
410	#endif	493	#endif
411		494
		495	void
		496	ev_sleep (ev_tstamp delay)
		497	{
		498	if (delay > 0.)
		499	{
		500	#if EV_USE_NANOSLEEP
		501	struct timespec ts;
		502
		503	ts.tv_sec = (time_t)delay;
		504	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		505
		506	nanosleep (&ts, 0);
		507	#elif defined(_WIN32)
		508	Sleep ((unsigned long)(delay * 1e3));
		509	#else
		510	struct timeval tv;
		511
		512	tv.tv_sec = (time_t)delay;
		513	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		514
		515	select (0, 0, 0, 0, &tv);
		516	#endif
		517	}
		518	}
		519
		520	/*****************************************************************************/
		521
412	int inline_size	522	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	523	array_nextsize (int elem, int cur, int cnt)
414	{	524	{
415	int ncur = cur + 1;	525	int ncur = cur + 1;
416		526
…		…
533	{	643	{
534	int fd = fdchanges [i];	644	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	645	ANFD *anfd = anfds + fd;
536	ev_io *w;	646	ev_io *w;
537		647
538	int events = 0;	648	unsigned char events = 0;
539		649
540	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	650	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
541	events \|= w->events;	651	events \|= (unsigned char)w->events;
542		652
543	#if EV_SELECT_IS_WINSOCKET	653	#if EV_SELECT_IS_WINSOCKET
544	if (events)	654	if (events)
545	{	655	{
546	unsigned long argp;	656	unsigned long argp;
		657	#ifdef EV_FD_TO_WIN32_HANDLE
		658	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		659	#else
547	anfd->handle = _get_osfhandle (fd);	660	anfd->handle = _get_osfhandle (fd);
		661	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	662	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	663	}
550	#endif	664	#endif
551		665
		666	{
		667	unsigned char o_events = anfd->events;
		668	unsigned char o_reify = anfd->reify;
		669
552	anfd->reify = 0;	670	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	671	anfd->events = events;
		672
		673	if (o_events != events \|\| o_reify & EV_IOFDSET)
		674	backend_modify (EV_A_ fd, o_events, events);
		675	}
556	}	676	}
557		677
558	fdchangecnt = 0;	678	fdchangecnt = 0;
559	}	679	}
560		680
561	void inline_size	681	void inline_size
562	fd_change (EV_P_ int fd)	682	fd_change (EV_P_ int fd, int flags)
563	{	683	{
564	if (expect_false (anfds [fd].reify))	684	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	685	anfds [fd].reify \|= flags;
568		686
		687	if (expect_true (!reify))
		688	{
569	++fdchangecnt;	689	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	691	fdchanges [fdchangecnt - 1] = fd;
		692	}
572	}	693	}
573		694
574	void inline_speed	695	void inline_speed
575	fd_kill (EV_P_ int fd)	696	fd_kill (EV_P_ int fd)
576	{	697	{
…		…
627		748
628	for (fd = 0; fd < anfdmax; ++fd)	749	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	750	if (anfds [fd].events)
630	{	751	{
631	anfds [fd].events = 0;	752	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	753	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
633	}	754	}
634	}	755	}
635		756
636	/*****************************************************************************/	757	/*****************************************************************************/
637		758
…		…
652	k = p;	773	k = p;
653	}	774	}
654		775
655	heap [k] = w;	776	heap [k] = w;
656	((W)heap [k])->active = k + 1;	777	((W)heap [k])->active = k + 1;
657
658	}	778	}
659		779
660	void inline_speed	780	void inline_speed
661	downheap (WT *heap, int N, int k)	781	downheap (WT *heap, int N, int k)
662	{	782	{
…		…
695	/*****************************************************************************/	815	/*****************************************************************************/
696		816
697	typedef struct	817	typedef struct
698	{	818	{
699	WL head;	819	WL head;
700	sig_atomic_t volatile gotsig;	820	EV_ATOMIC_T gotsig;
701	} ANSIG;	821	} ANSIG;
702		822
703	static ANSIG *signals;	823	static ANSIG *signals;
704	static int signalmax;	824	static int signalmax;
705		825
706	static int sigpipe [2];	826	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		827
710	void inline_size	828	void inline_size
711	signals_init (ANSIG *base, int count)	829	signals_init (ANSIG *base, int count)
712	{	830	{
713	while (count--)	831	while (count--)
…		…
717		835
718	++base;	836	++base;
719	}	837	}
720	}	838	}
721		839
722	static void	840	/*****************************************************************************/
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		841
773	void inline_speed	842	void inline_speed
774	fd_intern (int fd)	843	fd_intern (int fd)
775	{	844	{
776	#ifdef _WIN32	845	#ifdef _WIN32
…		…
781	fcntl (fd, F_SETFL, O_NONBLOCK);	850	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	851	#endif
783	}	852	}
784		853
785	static void noinline	854	static void noinline
786	siginit (EV_P)	855	evpipe_init (EV_P)
787	{	856	{
		857	if (!ev_is_active (&pipeev))
		858	{
		859	#if EV_USE_EVENTFD
		860	if ((evfd = eventfd (0, 0)) >= 0)
		861	{
		862	evpipe [0] = -1;
		863	fd_intern (evfd);
		864	ev_io_set (&pipeev, evfd, EV_READ);
		865	}
		866	else
		867	#endif
		868	{
		869	while (pipe (evpipe))
		870	syserr ("(libev) error creating signal/async pipe");
		871
788	fd_intern (sigpipe [0]);	872	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	873	fd_intern (evpipe [1]);
		874	ev_io_set (&pipeev, evpipe [0], EV_READ);
		875	}
790		876
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	877	ev_io_start (EV_A_ &pipeev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	878	ev_unref (EV_A); /* watcher should not keep loop alive */
		879	}
		880	}
		881
		882	void inline_size
		883	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		884	{
		885	if (!*flag)
		886	{
		887	int old_errno = errno; /* save errno because write might clobber it */
		888
		889	*flag = 1;
		890
		891	#if EV_USE_EVENTFD
		892	if (evfd >= 0)
		893	{
		894	uint64_t counter = 1;
		895	write (evfd, &counter, sizeof (uint64_t));
		896	}
		897	else
		898	#endif
		899	write (evpipe [1], &old_errno, 1);
		900
		901	errno = old_errno;
		902	}
		903	}
		904
		905	static void
		906	pipecb (EV_P_ ev_io *iow, int revents)
		907	{
		908	#if EV_USE_EVENTFD
		909	if (evfd >= 0)
		910	{
		911	uint64_t counter = 1;
		912	read (evfd, &counter, sizeof (uint64_t));
		913	}
		914	else
		915	#endif
		916	{
		917	char dummy;
		918	read (evpipe [0], &dummy, 1);
		919	}
		920
		921	if (gotsig && ev_is_default_loop (EV_A))
		922	{
		923	int signum;
		924	gotsig = 0;
		925
		926	for (signum = signalmax; signum--; )
		927	if (signals [signum].gotsig)
		928	ev_feed_signal_event (EV_A_ signum + 1);
		929	}
		930
		931	#if EV_ASYNC_ENABLE
		932	if (gotasync)
		933	{
		934	int i;
		935	gotasync = 0;
		936
		937	for (i = asynccnt; i--; )
		938	if (asyncs [i]->sent)
		939	{
		940	asyncs [i]->sent = 0;
		941	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		942	}
		943	}
		944	#endif
794	}	945	}
795		946
796	/*****************************************************************************/	947	/*****************************************************************************/
797		948
		949	static void
		950	ev_sighandler (int signum)
		951	{
		952	#if EV_MULTIPLICITY
		953	struct ev_loop *loop = &default_loop_struct;
		954	#endif
		955
		956	#if _WIN32
		957	signal (signum, ev_sighandler);
		958	#endif
		959
		960	signals [signum - 1].gotsig = 1;
		961	evpipe_write (EV_A_ &gotsig);
		962	}
		963
		964	void noinline
		965	ev_feed_signal_event (EV_P_ int signum)
		966	{
		967	WL w;
		968
		969	#if EV_MULTIPLICITY
		970	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		971	#endif
		972
		973	--signum;
		974
		975	if (signum < 0 \|\| signum >= signalmax)
		976	return;
		977
		978	signals [signum].gotsig = 0;
		979
		980	for (w = signals [signum].head; w; w = w->next)
		981	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		982	}
		983
		984	/*****************************************************************************/
		985
798	static ev_child *childs [EV_PID_HASHSIZE];	986	static WL childs [EV_PID_HASHSIZE];
799		987
800	#ifndef _WIN32	988	#ifndef _WIN32
801		989
802	static ev_signal childev;	990	static ev_signal childev;
803		991
		992	#ifndef WIFCONTINUED
		993	# define WIFCONTINUED(status) 0
		994	#endif
		995
804	void inline_speed	996	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	997	child_reap (EV_P_ int chain, int pid, int status)
806	{	998	{
807	ev_child *w;	999	ev_child *w;
		1000	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
808		1001
809	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1002	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1003	{
810	if (w->pid == pid \|\| !w->pid)	1004	if ((w->pid == pid \|\| !w->pid)
		1005	&& (!traced \|\| (w->flags & 1)))
811	{	1006	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	1007	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;	1008	w->rpid = pid;
814	w->rstatus = status;	1009	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1010	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1011	}
		1012	}
817	}	1013	}
818		1014
819	#ifndef WCONTINUED	1015	#ifndef WCONTINUED
820	# define WCONTINUED 0	1016	# define WCONTINUED 0
821	#endif	1017	#endif
…		…
830	if (!WCONTINUED	1026	if (!WCONTINUED
831	\|\| errno != EINVAL	1027	\|\| errno != EINVAL
832	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1028	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
833	return;	1029	return;
834		1030
835	/* make sure we are called again until all childs have been reaped */	1031	/* 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 */	1032	/* 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);	1033	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1034
839	child_reap (EV_A_ sw, pid, pid, status);	1035	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1036	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 */	1037	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1038	}
843		1039
844	#endif	1040	#endif
845		1041
846	/*****************************************************************************/	1042	/*****************************************************************************/
…		…
918	}	1114	}
919		1115
920	unsigned int	1116	unsigned int
921	ev_embeddable_backends (void)	1117	ev_embeddable_backends (void)
922	{	1118	{
923	return EVBACKEND_EPOLL	1119	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
924	\| EVBACKEND_KQUEUE	1120
925	\| EVBACKEND_PORT;	1121	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1122	/* please fix it and tell me how to detect the fix */
		1123	flags &= ~EVBACKEND_EPOLL;
		1124
		1125	return flags;
926	}	1126	}
927		1127
928	unsigned int	1128	unsigned int
929	ev_backend (EV_P)	1129	ev_backend (EV_P)
930	{	1130	{
…		…
933		1133
934	unsigned int	1134	unsigned int
935	ev_loop_count (EV_P)	1135	ev_loop_count (EV_P)
936	{	1136	{
937	return loop_count;	1137	return loop_count;
		1138	}
		1139
		1140	void
		1141	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1142	{
		1143	io_blocktime = interval;
		1144	}
		1145
		1146	void
		1147	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1148	{
		1149	timeout_blocktime = interval;
938	}	1150	}
939		1151
940	static void noinline	1152	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1153	loop_init (EV_P_ unsigned int flags)
942	{	1154	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1160	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1161	have_monotonic = 1;
950	}	1162	}
951	#endif	1163	#endif
952		1164
953	ev_rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1166	mn_now = get_clock ();
955	now_floor = mn_now;	1167	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1168	rtmn_diff = ev_rt_now - mn_now;
		1169
		1170	io_blocktime = 0.;
		1171	timeout_blocktime = 0.;
		1172	backend = 0;
		1173	backend_fd = -1;
		1174	gotasync = 0;
		1175	#if EV_USE_INOTIFY
		1176	fs_fd = -2;
		1177	#endif
957		1178
958	/* pid check not overridable via env */	1179	/* pid check not overridable via env */
959	#ifndef _WIN32	1180	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1181	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1182	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1185	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1186	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1187	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1188	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1189
969	if (!(flags & 0x0000ffffUL))	1190	if (!(flags & 0x0000ffffU))
970	flags \|= ev_recommended_backends ();	1191	flags \|= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1192
978	#if EV_USE_PORT	1193	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1194	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1195	#endif
981	#if EV_USE_KQUEUE	1196	#if EV_USE_KQUEUE
…		…
989	#endif	1204	#endif
990	#if EV_USE_SELECT	1205	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1206	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1207	#endif
993		1208
994	ev_init (&sigev, sigcb);	1209	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1210	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1211	}
997	}	1212	}
998		1213
999	static void noinline	1214	static void noinline
1000	loop_destroy (EV_P)	1215	loop_destroy (EV_P)
1001	{	1216	{
1002	int i;	1217	int i;
		1218
		1219	if (ev_is_active (&pipeev))
		1220	{
		1221	ev_ref (EV_A); /* signal watcher */
		1222	ev_io_stop (EV_A_ &pipeev);
		1223
		1224	#if EV_USE_EVENTFD
		1225	if (evfd >= 0)
		1226	close (evfd);
		1227	#endif
		1228
		1229	if (evpipe [0] >= 0)
		1230	{
		1231	close (evpipe [0]);
		1232	close (evpipe [1]);
		1233	}
		1234	}
1003		1235
1004	#if EV_USE_INOTIFY	1236	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1237	if (fs_fd >= 0)
1006	close (fs_fd);	1238	close (fs_fd);
1007	#endif	1239	#endif
…		…
1030	array_free (pending, [i]);	1262	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1263	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1264	array_free (idle, [i]);
1033	#endif	1265	#endif
1034	}	1266	}
		1267
		1268	ev_free (anfds); anfdmax = 0;
1035		1269
1036	/* have to use the microsoft-never-gets-it-right macro */	1270	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1271	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1272	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1273	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1274	array_free (periodic, EMPTY);
1041	#endif	1275	#endif
		1276	#if EV_FORK_ENABLE
		1277	array_free (fork, EMPTY);
		1278	#endif
1042	array_free (prepare, EMPTY);	1279	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1280	array_free (check, EMPTY);
		1281	#if EV_ASYNC_ENABLE
		1282	array_free (async, EMPTY);
		1283	#endif
1044		1284
1045	backend = 0;	1285	backend = 0;
1046	}	1286	}
1047		1287
1048	void inline_size infy_fork (EV_P);	1288	void inline_size infy_fork (EV_P);
…		…
1061	#endif	1301	#endif
1062	#if EV_USE_INOTIFY	1302	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1303	infy_fork (EV_A);
1064	#endif	1304	#endif
1065		1305
1066	if (ev_is_active (&sigev))	1306	if (ev_is_active (&pipeev))
1067	{	1307	{
1068	/* default loop */	1308	/* this "locks" the handlers against writing to the pipe */
		1309	/* while we modify the fd vars */
		1310	gotsig = 1;
		1311	#if EV_ASYNC_ENABLE
		1312	gotasync = 1;
		1313	#endif
1069		1314
1070	ev_ref (EV_A);	1315	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1316	ev_io_stop (EV_A_ &pipeev);
		1317
		1318	#if EV_USE_EVENTFD
		1319	if (evfd >= 0)
		1320	close (evfd);
		1321	#endif
		1322
		1323	if (evpipe [0] >= 0)
		1324	{
1072	close (sigpipe [0]);	1325	close (evpipe [0]);
1073	close (sigpipe [1]);	1326	close (evpipe [1]);
		1327	}
1074		1328
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1329	evpipe_init (EV_A);
		1330	/* now iterate over everything, in case we missed something */
		1331	pipecb (EV_A_ &pipeev, EV_READ);
1079	}	1332	}
1080		1333
1081	postfork = 0;	1334	postfork = 0;
1082	}	1335	}
1083		1336
…		…
1105	}	1358	}
1106		1359
1107	void	1360	void
1108	ev_loop_fork (EV_P)	1361	ev_loop_fork (EV_P)
1109	{	1362	{
1110	postfork = 1;	1363	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1364	}
1112		1365
1113	#endif	1366	#endif
1114		1367
1115	#if EV_MULTIPLICITY	1368	#if EV_MULTIPLICITY
…		…
1118	#else	1371	#else
1119	int	1372	int
1120	ev_default_loop (unsigned int flags)	1373	ev_default_loop (unsigned int flags)
1121	#endif	1374	#endif
1122	{	1375	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1376	if (!ev_default_loop_ptr)
1128	{	1377	{
1129	#if EV_MULTIPLICITY	1378	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1379	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1380	#else
…		…
1134		1383
1135	loop_init (EV_A_ flags);	1384	loop_init (EV_A_ flags);
1136		1385
1137	if (ev_backend (EV_A))	1386	if (ev_backend (EV_A))
1138	{	1387	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1388	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1389	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1390	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1391	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1392	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1409	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1410	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1411	ev_signal_stop (EV_A_ &childev);
1165	#endif	1412	#endif
1166		1413
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);	1414	loop_destroy (EV_A);
1174	}	1415	}
1175		1416
1176	void	1417	void
1177	ev_default_fork (void)	1418	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1420	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1421	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1422	#endif
1182		1423
1183	if (backend)	1424	if (backend)
1184	postfork = 1;	1425	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1426	}
1186		1427
1187	/*****************************************************************************/	1428	/*****************************************************************************/
1188		1429
1189	void	1430	void
…		…
1215	void inline_size	1456	void inline_size
1216	timers_reify (EV_P)	1457	timers_reify (EV_P)
1217	{	1458	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)	1459	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{	1460	{
1220	ev_timer *w = timers [0];	1461	ev_timer w = (ev_timer )timers [0];
1221		1462
1222	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1463	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1223		1464
1224	/* first reschedule or stop timer */	1465	/* first reschedule or stop timer */
1225	if (w->repeat)	1466	if (w->repeat)
…		…
1228		1469
1229	((WT)w)->at += w->repeat;	1470	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)	1471	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;	1472	((WT)w)->at = mn_now;
1232		1473
1233	downheap ((WT *)timers, timercnt, 0);	1474	downheap (timers, timercnt, 0);
1234	}	1475	}
1235	else	1476	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1477	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237		1478
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1479	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1243	void inline_size	1484	void inline_size
1244	periodics_reify (EV_P)	1485	periodics_reify (EV_P)
1245	{	1486	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1487	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{	1488	{
1248	ev_periodic *w = periodics [0];	1489	ev_periodic w = (ev_periodic )periodics [0];
1249		1490
1250	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1491	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1251		1492
1252	/* first reschedule or stop timer */	1493	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)	1494	if (w->reschedule_cb)
1254	{	1495	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1496	((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));	1497	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap ((WT *)periodics, periodiccnt, 0);	1498	downheap (periodics, periodiccnt, 0);
1258	}	1499	}
1259	else if (w->interval)	1500	else if (w->interval)
1260	{	1501	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1502	((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;	1503	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));	1504	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);	1505	downheap (periodics, periodiccnt, 0);
1265	}	1506	}
1266	else	1507	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1508	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268		1509
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1510	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1276	int i;	1517	int i;
1277		1518
1278	/* adjust periodics after time jump */	1519	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)	1520	for (i = 0; i < periodiccnt; ++i)
1280	{	1521	{
1281	ev_periodic *w = periodics [i];	1522	ev_periodic w = (ev_periodic )periodics [i];
1282		1523
1283	if (w->reschedule_cb)	1524	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1525	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)	1526	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1527	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}	1528	}
1288		1529
1289	/* now rebuild the heap */	1530	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )	1531	for (i = periodiccnt >> 1; i--; )
1291	downheap ((WT *)periodics, periodiccnt, i);	1532	downheap (periodics, periodiccnt, i);
1292	}	1533	}
1293	#endif	1534	#endif
1294		1535
1295	#if EV_IDLE_ENABLE	1536	#if EV_IDLE_ENABLE
1296	void inline_size	1537	void inline_size
…		…
1398	static int loop_done;	1639	static int loop_done;
1399		1640
1400	void	1641	void
1401	ev_loop (EV_P_ int flags)	1642	ev_loop (EV_P_ int flags)
1402	{	1643	{
1403	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1644	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1645
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1646	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1647
1409	do	1648	do
1410	{	1649	{
…		…
1444	/* update fd-related kernel structures */	1683	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1684	fd_reify (EV_A);
1446		1685
1447	/* calculate blocking time */	1686	/* calculate blocking time */
1448	{	1687	{
1449	ev_tstamp block;	1688	ev_tstamp waittime = 0.;
		1689	ev_tstamp sleeptime = 0.;
1450		1690
1451	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1691	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1692	{
1455	/* update time to cancel out callback processing overhead */	1693	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1694	time_update (EV_A_ 1e100);
1457		1695
1458	block = MAX_BLOCKTIME;	1696	waittime = MAX_BLOCKTIME;
1459		1697
1460	if (timercnt)	1698	if (timercnt)
1461	{	1699	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1700	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1463	if (block > to) block = to;	1701	if (waittime > to) waittime = to;
1464	}	1702	}
1465		1703
1466	#if EV_PERIODIC_ENABLE	1704	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1705	if (periodiccnt)
1468	{	1706	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1707	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	1708	if (waittime > to) waittime = to;
1471	}	1709	}
1472	#endif	1710	#endif
1473		1711
1474	if (expect_false (block < 0.)) block = 0.;	1712	if (expect_false (waittime < timeout_blocktime))
		1713	waittime = timeout_blocktime;
		1714
		1715	sleeptime = waittime - backend_fudge;
		1716
		1717	if (expect_true (sleeptime > io_blocktime))
		1718	sleeptime = io_blocktime;
		1719
		1720	if (sleeptime)
		1721	{
		1722	ev_sleep (sleeptime);
		1723	waittime -= sleeptime;
		1724	}
1475	}	1725	}
1476		1726
1477	++loop_count;	1727	++loop_count;
1478	backend_poll (EV_A_ block);	1728	backend_poll (EV_A_ waittime);
1479		1729
1480	/* update ev_rt_now, do magic */	1730	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	1731	time_update (EV_A_ waittime + sleeptime);
1482	}	1732	}
1483		1733
1484	/* queue pending timers and reschedule them */	1734	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	1735	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	1736	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	1745	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	1746	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1747	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		1748
1499	call_pending (EV_A);	1749	call_pending (EV_A);
1500
1501	}	1750	}
1502	while (expect_true (activecnt && !loop_done));	1751	while (expect_true (
		1752	activecnt
		1753	&& !loop_done
		1754	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1755	));
1503		1756
1504	if (loop_done == EVUNLOOP_ONE)	1757	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	1758	loop_done = EVUNLOOP_CANCEL;
1506	}	1759	}
1507		1760
…		…
1598		1851
1599	assert (("ev_io_start called with negative fd", fd >= 0));	1852	assert (("ev_io_start called with negative fd", fd >= 0));
1600		1853
1601	ev_start (EV_A_ (W)w, 1);	1854	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1855	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1856	wlist_add (&anfds[fd].head, (WL)w);
1604		1857
1605	fd_change (EV_A_ fd);	1858	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1859	w->events &= ~EV_IOFDSET;
1606	}	1860	}
1607		1861
1608	void noinline	1862	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	1863	ev_io_stop (EV_P_ ev_io *w)
1610	{	1864	{
…		…
1612	if (expect_false (!ev_is_active (w)))	1866	if (expect_false (!ev_is_active (w)))
1613	return;	1867	return;
1614		1868
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1869	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		1870
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1871	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	1872	ev_stop (EV_A_ (W)w);
1619		1873
1620	fd_change (EV_A_ w->fd);	1874	fd_change (EV_A_ w->fd, 1);
1621	}	1875	}
1622		1876
1623	void noinline	1877	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	1878	ev_timer_start (EV_P_ ev_timer *w)
1625	{	1879	{
…		…
1629	((WT)w)->at += mn_now;	1883	((WT)w)->at += mn_now;
1630		1884
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1885	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		1886
1633	ev_start (EV_A_ (W)w, ++timercnt);	1887	ev_start (EV_A_ (W)w, ++timercnt);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1888	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1635	timers [timercnt - 1] = w;	1889	timers [timercnt - 1] = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	1890	upheap (timers, timercnt - 1);
1637		1891
1638	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1892	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1639	}	1893	}
1640		1894
1641	void noinline	1895	void noinline
…		…
1643	{	1897	{
1644	clear_pending (EV_A_ (W)w);	1898	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1899	if (expect_false (!ev_is_active (w)))
1646	return;	1900	return;
1647		1901
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1902	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1649		1903
1650	{	1904	{
1651	int active = ((W)w)->active;	1905	int active = ((W)w)->active;
1652		1906
1653	if (expect_true (--active < --timercnt))	1907	if (expect_true (--active < --timercnt))
1654	{	1908	{
1655	timers [active] = timers [timercnt];	1909	timers [active] = timers [timercnt];
1656	adjustheap ((WT *)timers, timercnt, active);	1910	adjustheap (timers, timercnt, active);
1657	}	1911	}
1658	}	1912	}
1659		1913
1660	((WT)w)->at -= mn_now;	1914	((WT)w)->at -= mn_now;
1661		1915
…		…
1668	if (ev_is_active (w))	1922	if (ev_is_active (w))
1669	{	1923	{
1670	if (w->repeat)	1924	if (w->repeat)
1671	{	1925	{
1672	((WT)w)->at = mn_now + w->repeat;	1926	((WT)w)->at = mn_now + w->repeat;
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1927	adjustheap (timers, timercnt, ((W)w)->active - 1);
1674	}	1928	}
1675	else	1929	else
1676	ev_timer_stop (EV_A_ w);	1930	ev_timer_stop (EV_A_ w);
1677	}	1931	}
1678	else if (w->repeat)	1932	else if (w->repeat)
…		…
1699	}	1953	}
1700	else	1954	else
1701	((WT)w)->at = w->offset;	1955	((WT)w)->at = w->offset;
1702		1956
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	1957	ev_start (EV_A_ (W)w, ++periodiccnt);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1958	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	1959	periodics [periodiccnt - 1] = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	1960	upheap (periodics, periodiccnt - 1);
1707		1961
1708	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1962	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1709	}	1963	}
1710		1964
1711	void noinline	1965	void noinline
…		…
1713	{	1967	{
1714	clear_pending (EV_A_ (W)w);	1968	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	1969	if (expect_false (!ev_is_active (w)))
1716	return;	1970	return;
1717		1971
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1972	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1719		1973
1720	{	1974	{
1721	int active = ((W)w)->active;	1975	int active = ((W)w)->active;
1722		1976
1723	if (expect_true (--active < --periodiccnt))	1977	if (expect_true (--active < --periodiccnt))
1724	{	1978	{
1725	periodics [active] = periodics [periodiccnt];	1979	periodics [active] = periodics [periodiccnt];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	1980	adjustheap (periodics, periodiccnt, active);
1727	}	1981	}
1728	}	1982	}
1729		1983
1730	ev_stop (EV_A_ (W)w);	1984	ev_stop (EV_A_ (W)w);
1731	}	1985	}
…		…
1751	#endif	2005	#endif
1752	if (expect_false (ev_is_active (w)))	2006	if (expect_false (ev_is_active (w)))
1753	return;	2007	return;
1754		2008
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2009	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2010
		2011	evpipe_init (EV_A);
1756		2012
1757	{	2013	{
1758	#ifndef _WIN32	2014	#ifndef _WIN32
1759	sigset_t full, prev;	2015	sigset_t full, prev;
1760	sigfillset (&full);	2016	sigfillset (&full);
…		…
1767	sigprocmask (SIG_SETMASK, &prev, 0);	2023	sigprocmask (SIG_SETMASK, &prev, 0);
1768	#endif	2024	#endif
1769	}	2025	}
1770		2026
1771	ev_start (EV_A_ (W)w, 1);	2027	ev_start (EV_A_ (W)w, 1);
1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2028	wlist_add (&signals [w->signum - 1].head, (WL)w);
1773		2029
1774	if (!((WL)w)->next)	2030	if (!((WL)w)->next)
1775	{	2031	{
1776	#if _WIN32	2032	#if _WIN32
1777	signal (w->signum, sighandler);	2033	signal (w->signum, ev_sighandler);
1778	#else	2034	#else
1779	struct sigaction sa;	2035	struct sigaction sa;
1780	sa.sa_handler = sighandler;	2036	sa.sa_handler = ev_sighandler;
1781	sigfillset (&sa.sa_mask);	2037	sigfillset (&sa.sa_mask);
1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2038	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1783	sigaction (w->signum, &sa, 0);	2039	sigaction (w->signum, &sa, 0);
1784	#endif	2040	#endif
1785	}	2041	}
…		…
1790	{	2046	{
1791	clear_pending (EV_A_ (W)w);	2047	clear_pending (EV_A_ (W)w);
1792	if (expect_false (!ev_is_active (w)))	2048	if (expect_false (!ev_is_active (w)))
1793	return;	2049	return;
1794		2050
1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2051	wlist_del (&signals [w->signum - 1].head, (WL)w);
1796	ev_stop (EV_A_ (W)w);	2052	ev_stop (EV_A_ (W)w);
1797		2053
1798	if (!signals [w->signum - 1].head)	2054	if (!signals [w->signum - 1].head)
1799	signal (w->signum, SIG_DFL);	2055	signal (w->signum, SIG_DFL);
1800	}	2056	}
…		…
1807	#endif	2063	#endif
1808	if (expect_false (ev_is_active (w)))	2064	if (expect_false (ev_is_active (w)))
1809	return;	2065	return;
1810		2066
1811	ev_start (EV_A_ (W)w, 1);	2067	ev_start (EV_A_ (W)w, 1);
1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2068	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1813	}	2069	}
1814		2070
1815	void	2071	void
1816	ev_child_stop (EV_P_ ev_child *w)	2072	ev_child_stop (EV_P_ ev_child *w)
1817	{	2073	{
1818	clear_pending (EV_A_ (W)w);	2074	clear_pending (EV_A_ (W)w);
1819	if (expect_false (!ev_is_active (w)))	2075	if (expect_false (!ev_is_active (w)))
1820	return;	2076	return;
1821		2077
1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2078	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823	ev_stop (EV_A_ (W)w);	2079	ev_stop (EV_A_ (W)w);
1824	}	2080	}
1825		2081
1826	#if EV_STAT_ENABLE	2082	#if EV_STAT_ENABLE
1827		2083
…		…
2169		2425
2170	#if EV_EMBED_ENABLE	2426	#if EV_EMBED_ENABLE
2171	void noinline	2427	void noinline
2172	ev_embed_sweep (EV_P_ ev_embed *w)	2428	ev_embed_sweep (EV_P_ ev_embed *w)
2173	{	2429	{
2174	ev_loop (w->loop, EVLOOP_NONBLOCK);	2430	ev_loop (w->other, EVLOOP_NONBLOCK);
2175	}	2431	}
2176		2432
2177	static void	2433	static void
2178	embed_cb (EV_P_ ev_io *io, int revents)	2434	embed_io_cb (EV_P_ ev_io *io, int revents)
2179	{	2435	{
2180	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2436	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2181		2437
2182	if (ev_cb (w))	2438	if (ev_cb (w))
2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2439	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184	else	2440	else
2185	ev_embed_sweep (loop, w);	2441	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	2442	}
		2443
		2444	static void
		2445	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2446	{
		2447	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2448
		2449	{
		2450	struct ev_loop *loop = w->other;
		2451
		2452	while (fdchangecnt)
		2453	{
		2454	fd_reify (EV_A);
		2455	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2456	}
		2457	}
		2458	}
		2459
		2460	#if 0
		2461	static void
		2462	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2463	{
		2464	ev_idle_stop (EV_A_ idle);
		2465	}
		2466	#endif
2187		2467
2188	void	2468	void
2189	ev_embed_start (EV_P_ ev_embed *w)	2469	ev_embed_start (EV_P_ ev_embed *w)
2190	{	2470	{
2191	if (expect_false (ev_is_active (w)))	2471	if (expect_false (ev_is_active (w)))
2192	return;	2472	return;
2193		2473
2194	{	2474	{
2195	struct ev_loop *loop = w->loop;	2475	struct ev_loop *loop = w->other;
2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2476	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2477	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198	}	2478	}
2199		2479
2200	ev_set_priority (&w->io, ev_priority (w));	2480	ev_set_priority (&w->io, ev_priority (w));
2201	ev_io_start (EV_A_ &w->io);	2481	ev_io_start (EV_A_ &w->io);
2202		2482
		2483	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2484	ev_set_priority (&w->prepare, EV_MINPRI);
		2485	ev_prepare_start (EV_A_ &w->prepare);
		2486
		2487	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2488
2203	ev_start (EV_A_ (W)w, 1);	2489	ev_start (EV_A_ (W)w, 1);
2204	}	2490	}
2205		2491
2206	void	2492	void
2207	ev_embed_stop (EV_P_ ev_embed *w)	2493	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2209	clear_pending (EV_A_ (W)w);	2495	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2496	if (expect_false (!ev_is_active (w)))
2211	return;	2497	return;
2212		2498
2213	ev_io_stop (EV_A_ &w->io);	2499	ev_io_stop (EV_A_ &w->io);
		2500	ev_prepare_stop (EV_A_ &w->prepare);
2214		2501
2215	ev_stop (EV_A_ (W)w);	2502	ev_stop (EV_A_ (W)w);
2216	}	2503	}
2217	#endif	2504	#endif
2218		2505
…		…
2243		2530
2244	ev_stop (EV_A_ (W)w);	2531	ev_stop (EV_A_ (W)w);
2245	}	2532	}
2246	#endif	2533	#endif
2247		2534
		2535	#if EV_ASYNC_ENABLE
		2536	void
		2537	ev_async_start (EV_P_ ev_async *w)
		2538	{
		2539	if (expect_false (ev_is_active (w)))
		2540	return;
		2541
		2542	evpipe_init (EV_A);
		2543
		2544	ev_start (EV_A_ (W)w, ++asynccnt);
		2545	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2546	asyncs [asynccnt - 1] = w;
		2547	}
		2548
		2549	void
		2550	ev_async_stop (EV_P_ ev_async *w)
		2551	{
		2552	clear_pending (EV_A_ (W)w);
		2553	if (expect_false (!ev_is_active (w)))
		2554	return;
		2555
		2556	{
		2557	int active = ((W)w)->active;
		2558	asyncs [active - 1] = asyncs [--asynccnt];
		2559	((W)asyncs [active - 1])->active = active;
		2560	}
		2561
		2562	ev_stop (EV_A_ (W)w);
		2563	}
		2564
		2565	void
		2566	ev_async_send (EV_P_ ev_async *w)
		2567	{
		2568	w->sent = 1;
		2569	evpipe_write (EV_A_ &gotasync);
		2570	}
		2571	#endif
		2572
2248	/*****************************************************************************/	2573	/*****************************************************************************/
2249		2574
2250	struct ev_once	2575	struct ev_once
2251	{	2576	{
2252	ev_io io;	2577	ev_io io;
…		…
2307	ev_timer_set (&once->to, timeout, 0.);	2632	ev_timer_set (&once->to, timeout, 0.);
2308	ev_timer_start (EV_A_ &once->to);	2633	ev_timer_start (EV_A_ &once->to);
2309	}	2634	}
2310	}	2635	}
2311		2636
		2637	#if EV_MULTIPLICITY
		2638	#include "ev_wrap.h"
		2639	#endif
		2640
2312	#ifdef __cplusplus	2641	#ifdef __cplusplus
2313	}	2642	}
2314	#endif	2643	#endif
2315		2644

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs. Revision 1.225 by root, Wed Apr 16 01:37:14 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.225 by root, Wed Apr 16 01:37:14 2008 UTC