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

Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs.
Revision 1.228 by root, Fri May 2 08:07:37 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	#define ev_at(w) ((WT)(w))->at
		331
		332	#if EV_USE_MONOTONIC
		333	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		334	/* giving it a reasonably high chance of working on typical architetcures */
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	335	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		336	#endif
267		337
268	#ifdef _WIN32	338	#ifdef _WIN32
269	# include "ev_win32.c"	339	# include "ev_win32.c"
270	#endif	340	#endif
271		341
…		…
292	perror (msg);	362	perror (msg);
293	abort ();	363	abort ();
294	}	364	}
295	}	365	}
296		366
		367	static void *
		368	ev_realloc_emul (void *ptr, long size)
		369	{
		370	/* some systems, notably openbsd and darwin, fail to properly
		371	* implement realloc (x, 0) (as required by both ansi c-98 and
		372	* the single unix specification, so work around them here.
		373	*/
		374
		375	if (size)
		376	return realloc (ptr, size);
		377
		378	free (ptr);
		379	return 0;
		380	}
		381
297	static void (alloc)(void *ptr, long size);	382	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
298		383
299	void	384	void
300	ev_set_allocator (void (cb)(void *ptr, long size))	385	ev_set_allocator (void (cb)(void *ptr, long size))
301	{	386	{
302	alloc = cb;	387	alloc = cb;
303	}	388	}
304		389
305	inline_speed void *	390	inline_speed void *
306	ev_realloc (void *ptr, long size)	391	ev_realloc (void *ptr, long size)
307	{	392	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	393	ptr = alloc (ptr, size);
309		394
310	if (!ptr && size)	395	if (!ptr && size)
311	{	396	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	397	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	398	abort ();
…		…
407	{	492	{
408	return ev_rt_now;	493	return ev_rt_now;
409	}	494	}
410	#endif	495	#endif
411		496
		497	void
		498	ev_sleep (ev_tstamp delay)
		499	{
		500	if (delay > 0.)
		501	{
		502	#if EV_USE_NANOSLEEP
		503	struct timespec ts;
		504
		505	ts.tv_sec = (time_t)delay;
		506	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		507
		508	nanosleep (&ts, 0);
		509	#elif defined(_WIN32)
		510	Sleep ((unsigned long)(delay * 1e3));
		511	#else
		512	struct timeval tv;
		513
		514	tv.tv_sec = (time_t)delay;
		515	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		516
		517	select (0, 0, 0, 0, &tv);
		518	#endif
		519	}
		520	}
		521
		522	/*****************************************************************************/
		523
412	int inline_size	524	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	525	array_nextsize (int elem, int cur, int cnt)
414	{	526	{
415	int ncur = cur + 1;	527	int ncur = cur + 1;
416		528
…		…
542		654
543	#if EV_SELECT_IS_WINSOCKET	655	#if EV_SELECT_IS_WINSOCKET
544	if (events)	656	if (events)
545	{	657	{
546	unsigned long argp;	658	unsigned long argp;
		659	#ifdef EV_FD_TO_WIN32_HANDLE
		660	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		661	#else
547	anfd->handle = _get_osfhandle (fd);	662	anfd->handle = _get_osfhandle (fd);
		663	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	664	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	665	}
550	#endif	666	#endif
551		667
552	{	668	{
…		…
640	}	756	}
641	}	757	}
642		758
643	/*****************************************************************************/	759	/*****************************************************************************/
644		760
		761	/* towards the root */
645	void inline_speed	762	void inline_speed
646	upheap (WT *heap, int k)	763	upheap (WT *heap, int k)
647	{	764	{
648	WT w = heap [k];	765	WT w = heap [k];
649		766
650	while (k)	767	for (;;)
651	{	768	{
652	int p = (k - 1) >> 1;	769	int p = k >> 1;
653		770
		771	/* maybe we could use a dummy element at heap [0]? */
654	if (heap [p]->at <= w->at)	772	if (!p \|\| heap [p]->at <= w->at)
655	break;	773	break;
656		774
657	heap [k] = heap [p];	775	heap [k] = heap [p];
658	((W)heap [k])->active = k + 1;	776	((W)heap [k])->active = k;
659	k = p;	777	k = p;
660	}	778	}
661		779
662	heap [k] = w;	780	heap [k] = w;
663	((W)heap [k])->active = k + 1;	781	((W)heap [k])->active = k;
664	}	782	}
665		783
		784	/* away from the root */
666	void inline_speed	785	void inline_speed
667	downheap (WT *heap, int N, int k)	786	downheap (WT *heap, int N, int k)
668	{	787	{
669	WT w = heap [k];	788	WT w = heap [k];
670		789
671	for (;;)	790	for (;;)
672	{	791	{
673	int c = (k << 1) + 1;	792	int c = k << 1;
674		793
675	if (c >= N)	794	if (c > N)
676	break;	795	break;
677		796
678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at	797	c += c < N && heap [c]->at > heap [c + 1]->at
679	? 1 : 0;	798	? 1 : 0;
680		799
681	if (w->at <= heap [c]->at)	800	if (w->at <= heap [c]->at)
682	break;	801	break;
683		802
684	heap [k] = heap [c];	803	heap [k] = heap [c];
685	((W)heap [k])->active = k + 1;	804	((W)heap [k])->active = k;
686		805
687	k = c;	806	k = c;
688	}	807	}
689		808
690	heap [k] = w;	809	heap [k] = w;
691	((W)heap [k])->active = k + 1;	810	((W)heap [k])->active = k;
692	}	811	}
693		812
694	void inline_size	813	void inline_size
695	adjustheap (WT *heap, int N, int k)	814	adjustheap (WT *heap, int N, int k)
696	{	815	{
…		…
701	/*****************************************************************************/	820	/*****************************************************************************/
702		821
703	typedef struct	822	typedef struct
704	{	823	{
705	WL head;	824	WL head;
706	sig_atomic_t volatile gotsig;	825	EV_ATOMIC_T gotsig;
707	} ANSIG;	826	} ANSIG;
708		827
709	static ANSIG *signals;	828	static ANSIG *signals;
710	static int signalmax;	829	static int signalmax;
711		830
712	static int sigpipe [2];	831	static EV_ATOMIC_T gotsig;
713	static sig_atomic_t volatile gotsig;
714	static ev_io sigev;
715		832
716	void inline_size	833	void inline_size
717	signals_init (ANSIG *base, int count)	834	signals_init (ANSIG *base, int count)
718	{	835	{
719	while (count--)	836	while (count--)
…		…
723		840
724	++base;	841	++base;
725	}	842	}
726	}	843	}
727		844
728	static void	845	/*****************************************************************************/
729	sighandler (int signum)
730	{
731	#if _WIN32
732	signal (signum, sighandler);
733	#endif
734
735	signals [signum - 1].gotsig = 1;
736
737	if (!gotsig)
738	{
739	int old_errno = errno;
740	gotsig = 1;
741	write (sigpipe [1], &signum, 1);
742	errno = old_errno;
743	}
744	}
745
746	void noinline
747	ev_feed_signal_event (EV_P_ int signum)
748	{
749	WL w;
750
751	#if EV_MULTIPLICITY
752	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
753	#endif
754
755	--signum;
756
757	if (signum < 0 \|\| signum >= signalmax)
758	return;
759
760	signals [signum].gotsig = 0;
761
762	for (w = signals [signum].head; w; w = w->next)
763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
764	}
765
766	static void
767	sigcb (EV_P_ ev_io *iow, int revents)
768	{
769	int signum;
770
771	read (sigpipe [0], &revents, 1);
772	gotsig = 0;
773
774	for (signum = signalmax; signum--; )
775	if (signals [signum].gotsig)
776	ev_feed_signal_event (EV_A_ signum + 1);
777	}
778		846
779	void inline_speed	847	void inline_speed
780	fd_intern (int fd)	848	fd_intern (int fd)
781	{	849	{
782	#ifdef _WIN32	850	#ifdef _WIN32
…		…
787	fcntl (fd, F_SETFL, O_NONBLOCK);	855	fcntl (fd, F_SETFL, O_NONBLOCK);
788	#endif	856	#endif
789	}	857	}
790		858
791	static void noinline	859	static void noinline
792	siginit (EV_P)	860	evpipe_init (EV_P)
793	{	861	{
		862	if (!ev_is_active (&pipeev))
		863	{
		864	#if EV_USE_EVENTFD
		865	if ((evfd = eventfd (0, 0)) >= 0)
		866	{
		867	evpipe [0] = -1;
		868	fd_intern (evfd);
		869	ev_io_set (&pipeev, evfd, EV_READ);
		870	}
		871	else
		872	#endif
		873	{
		874	while (pipe (evpipe))
		875	syserr ("(libev) error creating signal/async pipe");
		876
794	fd_intern (sigpipe [0]);	877	fd_intern (evpipe [0]);
795	fd_intern (sigpipe [1]);	878	fd_intern (evpipe [1]);
		879	ev_io_set (&pipeev, evpipe [0], EV_READ);
		880	}
796		881
797	ev_io_set (&sigev, sigpipe [0], EV_READ);
798	ev_io_start (EV_A_ &sigev);	882	ev_io_start (EV_A_ &pipeev);
799	ev_unref (EV_A); /* child watcher should not keep loop alive */	883	ev_unref (EV_A); /* watcher should not keep loop alive */
		884	}
		885	}
		886
		887	void inline_size
		888	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		889	{
		890	if (!*flag)
		891	{
		892	int old_errno = errno; /* save errno because write might clobber it */
		893
		894	*flag = 1;
		895
		896	#if EV_USE_EVENTFD
		897	if (evfd >= 0)
		898	{
		899	uint64_t counter = 1;
		900	write (evfd, &counter, sizeof (uint64_t));
		901	}
		902	else
		903	#endif
		904	write (evpipe [1], &old_errno, 1);
		905
		906	errno = old_errno;
		907	}
		908	}
		909
		910	static void
		911	pipecb (EV_P_ ev_io *iow, int revents)
		912	{
		913	#if EV_USE_EVENTFD
		914	if (evfd >= 0)
		915	{
		916	uint64_t counter = 1;
		917	read (evfd, &counter, sizeof (uint64_t));
		918	}
		919	else
		920	#endif
		921	{
		922	char dummy;
		923	read (evpipe [0], &dummy, 1);
		924	}
		925
		926	if (gotsig && ev_is_default_loop (EV_A))
		927	{
		928	int signum;
		929	gotsig = 0;
		930
		931	for (signum = signalmax; signum--; )
		932	if (signals [signum].gotsig)
		933	ev_feed_signal_event (EV_A_ signum + 1);
		934	}
		935
		936	#if EV_ASYNC_ENABLE
		937	if (gotasync)
		938	{
		939	int i;
		940	gotasync = 0;
		941
		942	for (i = asynccnt; i--; )
		943	if (asyncs [i]->sent)
		944	{
		945	asyncs [i]->sent = 0;
		946	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		947	}
		948	}
		949	#endif
800	}	950	}
801		951
802	/*****************************************************************************/	952	/*****************************************************************************/
803		953
		954	static void
		955	ev_sighandler (int signum)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = &default_loop_struct;
		959	#endif
		960
		961	#if _WIN32
		962	signal (signum, ev_sighandler);
		963	#endif
		964
		965	signals [signum - 1].gotsig = 1;
		966	evpipe_write (EV_A_ &gotsig);
		967	}
		968
		969	void noinline
		970	ev_feed_signal_event (EV_P_ int signum)
		971	{
		972	WL w;
		973
		974	#if EV_MULTIPLICITY
		975	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		976	#endif
		977
		978	--signum;
		979
		980	if (signum < 0 \|\| signum >= signalmax)
		981	return;
		982
		983	signals [signum].gotsig = 0;
		984
		985	for (w = signals [signum].head; w; w = w->next)
		986	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		987	}
		988
		989	/*****************************************************************************/
		990
804	static WL childs [EV_PID_HASHSIZE];	991	static WL childs [EV_PID_HASHSIZE];
805		992
806	#ifndef _WIN32	993	#ifndef _WIN32
807		994
808	static ev_signal childev;	995	static ev_signal childev;
809		996
		997	#ifndef WIFCONTINUED
		998	# define WIFCONTINUED(status) 0
		999	#endif
		1000
810	void inline_speed	1001	void inline_speed
811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1002	child_reap (EV_P_ int chain, int pid, int status)
812	{	1003	{
813	ev_child *w;	1004	ev_child *w;
		1005	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
814		1006
815	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1007	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1008	{
816	if (w->pid == pid \|\| !w->pid)	1009	if ((w->pid == pid \|\| !w->pid)
		1010	&& (!traced \|\| (w->flags & 1)))
817	{	1011	{
818	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	1012	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
819	w->rpid = pid;	1013	w->rpid = pid;
820	w->rstatus = status;	1014	w->rstatus = status;
821	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1015	ev_feed_event (EV_A_ (W)w, EV_CHILD);
822	}	1016	}
		1017	}
823	}	1018	}
824		1019
825	#ifndef WCONTINUED	1020	#ifndef WCONTINUED
826	# define WCONTINUED 0	1021	# define WCONTINUED 0
827	#endif	1022	#endif
…		…
836	if (!WCONTINUED	1031	if (!WCONTINUED
837	\|\| errno != EINVAL	1032	\|\| errno != EINVAL
838	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1033	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
839	return;	1034	return;
840		1035
841	/* make sure we are called again until all childs have been reaped */	1036	/* make sure we are called again until all children have been reaped */
842	/* we need to do it this way so that the callback gets called before we continue */	1037	/* we need to do it this way so that the callback gets called before we continue */
843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1038	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
844		1039
845	child_reap (EV_A_ sw, pid, pid, status);	1040	child_reap (EV_A_ pid, pid, status);
846	if (EV_PID_HASHSIZE > 1)	1041	if (EV_PID_HASHSIZE > 1)
847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1042	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
848	}	1043	}
849		1044
850	#endif	1045	#endif
851		1046
852	/*****************************************************************************/	1047	/*****************************************************************************/
…		…
924	}	1119	}
925		1120
926	unsigned int	1121	unsigned int
927	ev_embeddable_backends (void)	1122	ev_embeddable_backends (void)
928	{	1123	{
929	return EVBACKEND_EPOLL	1124	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
930	\| EVBACKEND_KQUEUE	1125
931	\| EVBACKEND_PORT;	1126	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1127	/* please fix it and tell me how to detect the fix */
		1128	flags &= ~EVBACKEND_EPOLL;
		1129
		1130	return flags;
932	}	1131	}
933		1132
934	unsigned int	1133	unsigned int
935	ev_backend (EV_P)	1134	ev_backend (EV_P)
936	{	1135	{
…		…
939		1138
940	unsigned int	1139	unsigned int
941	ev_loop_count (EV_P)	1140	ev_loop_count (EV_P)
942	{	1141	{
943	return loop_count;	1142	return loop_count;
		1143	}
		1144
		1145	void
		1146	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1147	{
		1148	io_blocktime = interval;
		1149	}
		1150
		1151	void
		1152	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1153	{
		1154	timeout_blocktime = interval;
944	}	1155	}
945		1156
946	static void noinline	1157	static void noinline
947	loop_init (EV_P_ unsigned int flags)	1158	loop_init (EV_P_ unsigned int flags)
948	{	1159	{
…		…
954	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1165	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
955	have_monotonic = 1;	1166	have_monotonic = 1;
956	}	1167	}
957	#endif	1168	#endif
958		1169
959	ev_rt_now = ev_time ();	1170	ev_rt_now = ev_time ();
960	mn_now = get_clock ();	1171	mn_now = get_clock ();
961	now_floor = mn_now;	1172	now_floor = mn_now;
962	rtmn_diff = ev_rt_now - mn_now;	1173	rtmn_diff = ev_rt_now - mn_now;
		1174
		1175	io_blocktime = 0.;
		1176	timeout_blocktime = 0.;
		1177	backend = 0;
		1178	backend_fd = -1;
		1179	gotasync = 0;
		1180	#if EV_USE_INOTIFY
		1181	fs_fd = -2;
		1182	#endif
963		1183
964	/* pid check not overridable via env */	1184	/* pid check not overridable via env */
965	#ifndef _WIN32	1185	#ifndef _WIN32
966	if (flags & EVFLAG_FORKCHECK)	1186	if (flags & EVFLAG_FORKCHECK)
967	curpid = getpid ();	1187	curpid = getpid ();
…		…
970	if (!(flags & EVFLAG_NOENV)	1190	if (!(flags & EVFLAG_NOENV)
971	&& !enable_secure ()	1191	&& !enable_secure ()
972	&& getenv ("LIBEV_FLAGS"))	1192	&& getenv ("LIBEV_FLAGS"))
973	flags = atoi (getenv ("LIBEV_FLAGS"));	1193	flags = atoi (getenv ("LIBEV_FLAGS"));
974		1194
975	if (!(flags & 0x0000ffffUL))	1195	if (!(flags & 0x0000ffffU))
976	flags \|= ev_recommended_backends ();	1196	flags \|= ev_recommended_backends ();
977
978	backend = 0;
979	backend_fd = -1;
980	#if EV_USE_INOTIFY
981	fs_fd = -2;
982	#endif
983		1197
984	#if EV_USE_PORT	1198	#if EV_USE_PORT
985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1199	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
986	#endif	1200	#endif
987	#if EV_USE_KQUEUE	1201	#if EV_USE_KQUEUE
…		…
995	#endif	1209	#endif
996	#if EV_USE_SELECT	1210	#if EV_USE_SELECT
997	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1211	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
998	#endif	1212	#endif
999		1213
1000	ev_init (&sigev, sigcb);	1214	ev_init (&pipeev, pipecb);
1001	ev_set_priority (&sigev, EV_MAXPRI);	1215	ev_set_priority (&pipeev, EV_MAXPRI);
1002	}	1216	}
1003	}	1217	}
1004		1218
1005	static void noinline	1219	static void noinline
1006	loop_destroy (EV_P)	1220	loop_destroy (EV_P)
1007	{	1221	{
1008	int i;	1222	int i;
		1223
		1224	if (ev_is_active (&pipeev))
		1225	{
		1226	ev_ref (EV_A); /* signal watcher */
		1227	ev_io_stop (EV_A_ &pipeev);
		1228
		1229	#if EV_USE_EVENTFD
		1230	if (evfd >= 0)
		1231	close (evfd);
		1232	#endif
		1233
		1234	if (evpipe [0] >= 0)
		1235	{
		1236	close (evpipe [0]);
		1237	close (evpipe [1]);
		1238	}
		1239	}
1009		1240
1010	#if EV_USE_INOTIFY	1241	#if EV_USE_INOTIFY
1011	if (fs_fd >= 0)	1242	if (fs_fd >= 0)
1012	close (fs_fd);	1243	close (fs_fd);
1013	#endif	1244	#endif
…		…
1036	array_free (pending, [i]);	1267	array_free (pending, [i]);
1037	#if EV_IDLE_ENABLE	1268	#if EV_IDLE_ENABLE
1038	array_free (idle, [i]);	1269	array_free (idle, [i]);
1039	#endif	1270	#endif
1040	}	1271	}
		1272
		1273	ev_free (anfds); anfdmax = 0;
1041		1274
1042	/* have to use the microsoft-never-gets-it-right macro */	1275	/* have to use the microsoft-never-gets-it-right macro */
1043	array_free (fdchange, EMPTY);	1276	array_free (fdchange, EMPTY);
1044	array_free (timer, EMPTY);	1277	array_free (timer, EMPTY);
1045	#if EV_PERIODIC_ENABLE	1278	#if EV_PERIODIC_ENABLE
1046	array_free (periodic, EMPTY);	1279	array_free (periodic, EMPTY);
1047	#endif	1280	#endif
		1281	#if EV_FORK_ENABLE
		1282	array_free (fork, EMPTY);
		1283	#endif
1048	array_free (prepare, EMPTY);	1284	array_free (prepare, EMPTY);
1049	array_free (check, EMPTY);	1285	array_free (check, EMPTY);
		1286	#if EV_ASYNC_ENABLE
		1287	array_free (async, EMPTY);
		1288	#endif
1050		1289
1051	backend = 0;	1290	backend = 0;
1052	}	1291	}
1053		1292
		1293	#if EV_USE_INOTIFY
1054	void inline_size infy_fork (EV_P);	1294	void inline_size infy_fork (EV_P);
		1295	#endif
1055		1296
1056	void inline_size	1297	void inline_size
1057	loop_fork (EV_P)	1298	loop_fork (EV_P)
1058	{	1299	{
1059	#if EV_USE_PORT	1300	#if EV_USE_PORT
…		…
1067	#endif	1308	#endif
1068	#if EV_USE_INOTIFY	1309	#if EV_USE_INOTIFY
1069	infy_fork (EV_A);	1310	infy_fork (EV_A);
1070	#endif	1311	#endif
1071		1312
1072	if (ev_is_active (&sigev))	1313	if (ev_is_active (&pipeev))
1073	{	1314	{
1074	/* default loop */	1315	/* this "locks" the handlers against writing to the pipe */
		1316	/* while we modify the fd vars */
		1317	gotsig = 1;
		1318	#if EV_ASYNC_ENABLE
		1319	gotasync = 1;
		1320	#endif
1075		1321
1076	ev_ref (EV_A);	1322	ev_ref (EV_A);
1077	ev_io_stop (EV_A_ &sigev);	1323	ev_io_stop (EV_A_ &pipeev);
		1324
		1325	#if EV_USE_EVENTFD
		1326	if (evfd >= 0)
		1327	close (evfd);
		1328	#endif
		1329
		1330	if (evpipe [0] >= 0)
		1331	{
1078	close (sigpipe [0]);	1332	close (evpipe [0]);
1079	close (sigpipe [1]);	1333	close (evpipe [1]);
		1334	}
1080		1335
1081	while (pipe (sigpipe))
1082	syserr ("(libev) error creating pipe");
1083
1084	siginit (EV_A);	1336	evpipe_init (EV_A);
		1337	/* now iterate over everything, in case we missed something */
		1338	pipecb (EV_A_ &pipeev, EV_READ);
1085	}	1339	}
1086		1340
1087	postfork = 0;	1341	postfork = 0;
1088	}	1342	}
1089		1343
…		…
1111	}	1365	}
1112		1366
1113	void	1367	void
1114	ev_loop_fork (EV_P)	1368	ev_loop_fork (EV_P)
1115	{	1369	{
1116	postfork = 1;	1370	postfork = 1; /* must be in line with ev_default_fork */
1117	}	1371	}
1118		1372
1119	#endif	1373	#endif
1120		1374
1121	#if EV_MULTIPLICITY	1375	#if EV_MULTIPLICITY
…		…
1124	#else	1378	#else
1125	int	1379	int
1126	ev_default_loop (unsigned int flags)	1380	ev_default_loop (unsigned int flags)
1127	#endif	1381	#endif
1128	{	1382	{
1129	if (sigpipe [0] == sigpipe [1])
1130	if (pipe (sigpipe))
1131	return 0;
1132
1133	if (!ev_default_loop_ptr)	1383	if (!ev_default_loop_ptr)
1134	{	1384	{
1135	#if EV_MULTIPLICITY	1385	#if EV_MULTIPLICITY
1136	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1386	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1137	#else	1387	#else
…		…
1140		1390
1141	loop_init (EV_A_ flags);	1391	loop_init (EV_A_ flags);
1142		1392
1143	if (ev_backend (EV_A))	1393	if (ev_backend (EV_A))
1144	{	1394	{
1145	siginit (EV_A);
1146
1147	#ifndef _WIN32	1395	#ifndef _WIN32
1148	ev_signal_init (&childev, childcb, SIGCHLD);	1396	ev_signal_init (&childev, childcb, SIGCHLD);
1149	ev_set_priority (&childev, EV_MAXPRI);	1397	ev_set_priority (&childev, EV_MAXPRI);
1150	ev_signal_start (EV_A_ &childev);	1398	ev_signal_start (EV_A_ &childev);
1151	ev_unref (EV_A); /* child watcher should not keep loop alive */	1399	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1168	#ifndef _WIN32	1416	#ifndef _WIN32
1169	ev_ref (EV_A); /* child watcher */	1417	ev_ref (EV_A); /* child watcher */
1170	ev_signal_stop (EV_A_ &childev);	1418	ev_signal_stop (EV_A_ &childev);
1171	#endif	1419	#endif
1172		1420
1173	ev_ref (EV_A); /* signal watcher */
1174	ev_io_stop (EV_A_ &sigev);
1175
1176	close (sigpipe [0]); sigpipe [0] = 0;
1177	close (sigpipe [1]); sigpipe [1] = 0;
1178
1179	loop_destroy (EV_A);	1421	loop_destroy (EV_A);
1180	}	1422	}
1181		1423
1182	void	1424	void
1183	ev_default_fork (void)	1425	ev_default_fork (void)
…		…
1185	#if EV_MULTIPLICITY	1427	#if EV_MULTIPLICITY
1186	struct ev_loop *loop = ev_default_loop_ptr;	1428	struct ev_loop *loop = ev_default_loop_ptr;
1187	#endif	1429	#endif
1188		1430
1189	if (backend)	1431	if (backend)
1190	postfork = 1;	1432	postfork = 1; /* must be in line with ev_loop_fork */
1191	}	1433	}
1192		1434
1193	/*****************************************************************************/	1435	/*****************************************************************************/
1194		1436
1195	void	1437	void
…		…
1219	}	1461	}
1220		1462
1221	void inline_size	1463	void inline_size
1222	timers_reify (EV_P)	1464	timers_reify (EV_P)
1223	{	1465	{
1224	while (timercnt && ((WT)timers [0])->at <= mn_now)	1466	while (timercnt && ev_at (timers [1]) <= mn_now)
1225	{	1467	{
1226	ev_timer w = (ev_timer )timers [0];	1468	ev_timer w = (ev_timer )timers [1];
1227		1469
1228	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1470	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1229		1471
1230	/* first reschedule or stop timer */	1472	/* first reschedule or stop timer */
1231	if (w->repeat)	1473	if (w->repeat)
1232	{	1474	{
1233	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1475	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1234		1476
1235	((WT)w)->at += w->repeat;	1477	ev_at (w) += w->repeat;
1236	if (((WT)w)->at < mn_now)	1478	if (ev_at (w) < mn_now)
1237	((WT)w)->at = mn_now;	1479	ev_at (w) = mn_now;
1238		1480
1239	downheap (timers, timercnt, 0);	1481	downheap (timers, timercnt, 1);
1240	}	1482	}
1241	else	1483	else
1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1484	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1243		1485
1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1486	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1247		1489
1248	#if EV_PERIODIC_ENABLE	1490	#if EV_PERIODIC_ENABLE
1249	void inline_size	1491	void inline_size
1250	periodics_reify (EV_P)	1492	periodics_reify (EV_P)
1251	{	1493	{
1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1494	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1253	{	1495	{
1254	ev_periodic w = (ev_periodic )periodics [0];	1496	ev_periodic w = (ev_periodic )periodics [1];
1255		1497
1256	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1498	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1257		1499
1258	/* first reschedule or stop timer */	1500	/* first reschedule or stop timer */
1259	if (w->reschedule_cb)	1501	if (w->reschedule_cb)
1260	{	1502	{
1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);	1503	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1504	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1263	downheap (periodics, periodiccnt, 0);	1505	downheap (periodics, periodiccnt, 1);
1264	}	1506	}
1265	else if (w->interval)	1507	else if (w->interval)
1266	{	1508	{
1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1509	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;	1510	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1511	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1270	downheap (periodics, periodiccnt, 0);	1512	downheap (periodics, periodiccnt, 1);
1271	}	1513	}
1272	else	1514	else
1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1515	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1274		1516
1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1517	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1285	for (i = 0; i < periodiccnt; ++i)	1527	for (i = 0; i < periodiccnt; ++i)
1286	{	1528	{
1287	ev_periodic w = (ev_periodic )periodics [i];	1529	ev_periodic w = (ev_periodic )periodics [i];
1288		1530
1289	if (w->reschedule_cb)	1531	if (w->reschedule_cb)
1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1532	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1291	else if (w->interval)	1533	else if (w->interval)
1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1534	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1293	}	1535	}
1294		1536
1295	/* now rebuild the heap */	1537	/* now rebuild the heap */
1296	for (i = periodiccnt >> 1; i--; )	1538	for (i = periodiccnt >> 1; i--; )
1297	downheap (periodics, periodiccnt, i);	1539	downheap (periodics, periodiccnt, i);
…		…
1379	{	1621	{
1380	#if EV_PERIODIC_ENABLE	1622	#if EV_PERIODIC_ENABLE
1381	periodics_reschedule (EV_A);	1623	periodics_reschedule (EV_A);
1382	#endif	1624	#endif
1383	/* adjust timers. this is easy, as the offset is the same for all of them */	1625	/* adjust timers. this is easy, as the offset is the same for all of them */
1384	for (i = 0; i < timercnt; ++i)	1626	for (i = 1; i <= timercnt; ++i)
1385	((WT)timers [i])->at += ev_rt_now - mn_now;	1627	ev_at (timers [i]) += ev_rt_now - mn_now;
1386	}	1628	}
1387		1629
1388	mn_now = ev_rt_now;	1630	mn_now = ev_rt_now;
1389	}	1631	}
1390	}	1632	}
…		…
1404	static int loop_done;	1646	static int loop_done;
1405		1647
1406	void	1648	void
1407	ev_loop (EV_P_ int flags)	1649	ev_loop (EV_P_ int flags)
1408	{	1650	{
1409	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1651	loop_done = EVUNLOOP_CANCEL;
1410	? EVUNLOOP_ONE
1411	: EVUNLOOP_CANCEL;
1412		1652
1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1653	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1414		1654
1415	do	1655	do
1416	{	1656	{
…		…
1450	/* update fd-related kernel structures */	1690	/* update fd-related kernel structures */
1451	fd_reify (EV_A);	1691	fd_reify (EV_A);
1452		1692
1453	/* calculate blocking time */	1693	/* calculate blocking time */
1454	{	1694	{
1455	ev_tstamp block;	1695	ev_tstamp waittime = 0.;
		1696	ev_tstamp sleeptime = 0.;
1456		1697
1457	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1698	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1458	block = 0.; /* do not block at all */
1459	else
1460	{	1699	{
1461	/* update time to cancel out callback processing overhead */	1700	/* update time to cancel out callback processing overhead */
1462	time_update (EV_A_ 1e100);	1701	time_update (EV_A_ 1e100);
1463		1702
1464	block = MAX_BLOCKTIME;	1703	waittime = MAX_BLOCKTIME;
1465		1704
1466	if (timercnt)	1705	if (timercnt)
1467	{	1706	{
1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1707	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1469	if (block > to) block = to;	1708	if (waittime > to) waittime = to;
1470	}	1709	}
1471		1710
1472	#if EV_PERIODIC_ENABLE	1711	#if EV_PERIODIC_ENABLE
1473	if (periodiccnt)	1712	if (periodiccnt)
1474	{	1713	{
1475	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1714	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1476	if (block > to) block = to;	1715	if (waittime > to) waittime = to;
1477	}	1716	}
1478	#endif	1717	#endif
1479		1718
1480	if (expect_false (block < 0.)) block = 0.;	1719	if (expect_false (waittime < timeout_blocktime))
		1720	waittime = timeout_blocktime;
		1721
		1722	sleeptime = waittime - backend_fudge;
		1723
		1724	if (expect_true (sleeptime > io_blocktime))
		1725	sleeptime = io_blocktime;
		1726
		1727	if (sleeptime)
		1728	{
		1729	ev_sleep (sleeptime);
		1730	waittime -= sleeptime;
		1731	}
1481	}	1732	}
1482		1733
1483	++loop_count;	1734	++loop_count;
1484	backend_poll (EV_A_ block);	1735	backend_poll (EV_A_ waittime);
1485		1736
1486	/* update ev_rt_now, do magic */	1737	/* update ev_rt_now, do magic */
1487	time_update (EV_A_ block);	1738	time_update (EV_A_ waittime + sleeptime);
1488	}	1739	}
1489		1740
1490	/* queue pending timers and reschedule them */	1741	/* queue pending timers and reschedule them */
1491	timers_reify (EV_A); /* relative timers called last */	1742	timers_reify (EV_A); /* relative timers called last */
1492	#if EV_PERIODIC_ENABLE	1743	#if EV_PERIODIC_ENABLE
…		…
1501	/* queue check watchers, to be executed first */	1752	/* queue check watchers, to be executed first */
1502	if (expect_false (checkcnt))	1753	if (expect_false (checkcnt))
1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1754	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1504		1755
1505	call_pending (EV_A);	1756	call_pending (EV_A);
1506
1507	}	1757	}
1508	while (expect_true (activecnt && !loop_done));	1758	while (expect_true (
		1759	activecnt
		1760	&& !loop_done
		1761	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1762	));
1509		1763
1510	if (loop_done == EVUNLOOP_ONE)	1764	if (loop_done == EVUNLOOP_ONE)
1511	loop_done = EVUNLOOP_CANCEL;	1765	loop_done = EVUNLOOP_CANCEL;
1512	}	1766	}
1513		1767
…		…
1631	ev_timer_start (EV_P_ ev_timer *w)	1885	ev_timer_start (EV_P_ ev_timer *w)
1632	{	1886	{
1633	if (expect_false (ev_is_active (w)))	1887	if (expect_false (ev_is_active (w)))
1634	return;	1888	return;
1635		1889
1636	((WT)w)->at += mn_now;	1890	ev_at (w) += mn_now;
1637		1891
1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1892	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1639		1893
1640	ev_start (EV_A_ (W)w, ++timercnt);	1894	ev_start (EV_A_ (W)w, ++timercnt);
1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	1895	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1642	timers [timercnt - 1] = (WT)w;	1896	timers [timercnt] = (WT)w;
1643	upheap (timers, timercnt - 1);	1897	upheap (timers, timercnt);
1644		1898
1645	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1899	/assert (("internal timer heap corruption", timers [((W)w)->active] == w));/
1646	}	1900	}
1647		1901
1648	void noinline	1902	void noinline
1649	ev_timer_stop (EV_P_ ev_timer *w)	1903	ev_timer_stop (EV_P_ ev_timer *w)
1650	{	1904	{
1651	clear_pending (EV_A_ (W)w);	1905	clear_pending (EV_A_ (W)w);
1652	if (expect_false (!ev_is_active (w)))	1906	if (expect_false (!ev_is_active (w)))
1653	return;	1907	return;
1654		1908
1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	1909	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1656		1910
1657	{	1911	{
1658	int active = ((W)w)->active;	1912	int active = ((W)w)->active;
1659		1913
1660	if (expect_true (--active < --timercnt))	1914	if (expect_true (active < timercnt))
1661	{	1915	{
1662	timers [active] = timers [timercnt];	1916	timers [active] = timers [timercnt];
1663	adjustheap (timers, timercnt, active);	1917	adjustheap (timers, timercnt, active);
1664	}	1918	}
		1919
		1920	--timercnt;
1665	}	1921	}
1666		1922
1667	((WT)w)->at -= mn_now;	1923	ev_at (w) -= mn_now;
1668		1924
1669	ev_stop (EV_A_ (W)w);	1925	ev_stop (EV_A_ (W)w);
1670	}	1926	}
1671		1927
1672	void noinline	1928	void noinline
…		…
1674	{	1930	{
1675	if (ev_is_active (w))	1931	if (ev_is_active (w))
1676	{	1932	{
1677	if (w->repeat)	1933	if (w->repeat)
1678	{	1934	{
1679	((WT)w)->at = mn_now + w->repeat;	1935	ev_at (w) = mn_now + w->repeat;
1680	adjustheap (timers, timercnt, ((W)w)->active - 1);	1936	adjustheap (timers, timercnt, ((W)w)->active);
1681	}	1937	}
1682	else	1938	else
1683	ev_timer_stop (EV_A_ w);	1939	ev_timer_stop (EV_A_ w);
1684	}	1940	}
1685	else if (w->repeat)	1941	else if (w->repeat)
…		…
1695	{	1951	{
1696	if (expect_false (ev_is_active (w)))	1952	if (expect_false (ev_is_active (w)))
1697	return;	1953	return;
1698		1954
1699	if (w->reschedule_cb)	1955	if (w->reschedule_cb)
1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1956	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1701	else if (w->interval)	1957	else if (w->interval)
1702	{	1958	{
1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1959	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1704	/* this formula differs from the one in periodic_reify because we do not always round up */	1960	/* this formula differs from the one in periodic_reify because we do not always round up */
1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	1961	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1706	}	1962	}
1707	else	1963	else
1708	((WT)w)->at = w->offset;	1964	ev_at (w) = w->offset;
1709		1965
1710	ev_start (EV_A_ (W)w, ++periodiccnt);	1966	ev_start (EV_A_ (W)w, ++periodiccnt);
1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	1967	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1712	periodics [periodiccnt - 1] = (WT)w;	1968	periodics [periodiccnt] = (WT)w;
1713	upheap (periodics, periodiccnt - 1);	1969	upheap (periodics, periodiccnt);
1714		1970
1715	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1971	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1716	}	1972	}
1717		1973
1718	void noinline	1974	void noinline
…		…
1720	{	1976	{
1721	clear_pending (EV_A_ (W)w);	1977	clear_pending (EV_A_ (W)w);
1722	if (expect_false (!ev_is_active (w)))	1978	if (expect_false (!ev_is_active (w)))
1723	return;	1979	return;
1724		1980
1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	1981	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1726		1982
1727	{	1983	{
1728	int active = ((W)w)->active;	1984	int active = ((W)w)->active;
1729		1985
1730	if (expect_true (--active < --periodiccnt))	1986	if (expect_true (active < periodiccnt))
1731	{	1987	{
1732	periodics [active] = periodics [periodiccnt];	1988	periodics [active] = periodics [periodiccnt];
1733	adjustheap (periodics, periodiccnt, active);	1989	adjustheap (periodics, periodiccnt, active);
1734	}	1990	}
		1991
		1992	--periodiccnt;
1735	}	1993	}
1736		1994
1737	ev_stop (EV_A_ (W)w);	1995	ev_stop (EV_A_ (W)w);
1738	}	1996	}
1739		1997
…		…
1758	#endif	2016	#endif
1759	if (expect_false (ev_is_active (w)))	2017	if (expect_false (ev_is_active (w)))
1760	return;	2018	return;
1761		2019
1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2020	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2021
		2022	evpipe_init (EV_A);
1763		2023
1764	{	2024	{
1765	#ifndef _WIN32	2025	#ifndef _WIN32
1766	sigset_t full, prev;	2026	sigset_t full, prev;
1767	sigfillset (&full);	2027	sigfillset (&full);
…		…
1779	wlist_add (&signals [w->signum - 1].head, (WL)w);	2039	wlist_add (&signals [w->signum - 1].head, (WL)w);
1780		2040
1781	if (!((WL)w)->next)	2041	if (!((WL)w)->next)
1782	{	2042	{
1783	#if _WIN32	2043	#if _WIN32
1784	signal (w->signum, sighandler);	2044	signal (w->signum, ev_sighandler);
1785	#else	2045	#else
1786	struct sigaction sa;	2046	struct sigaction sa;
1787	sa.sa_handler = sighandler;	2047	sa.sa_handler = ev_sighandler;
1788	sigfillset (&sa.sa_mask);	2048	sigfillset (&sa.sa_mask);
1789	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2049	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1790	sigaction (w->signum, &sa, 0);	2050	sigaction (w->signum, &sa, 0);
1791	#endif	2051	#endif
1792	}	2052	}
…		…
2176		2436
2177	#if EV_EMBED_ENABLE	2437	#if EV_EMBED_ENABLE
2178	void noinline	2438	void noinline
2179	ev_embed_sweep (EV_P_ ev_embed *w)	2439	ev_embed_sweep (EV_P_ ev_embed *w)
2180	{	2440	{
2181	ev_loop (w->loop, EVLOOP_NONBLOCK);	2441	ev_loop (w->other, EVLOOP_NONBLOCK);
2182	}	2442	}
2183		2443
2184	static void	2444	static void
2185	embed_cb (EV_P_ ev_io *io, int revents)	2445	embed_io_cb (EV_P_ ev_io *io, int revents)
2186	{	2446	{
2187	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2447	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2188		2448
2189	if (ev_cb (w))	2449	if (ev_cb (w))
2190	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2450	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2191	else	2451	else
2192	ev_embed_sweep (loop, w);	2452	ev_loop (w->other, EVLOOP_NONBLOCK);
2193	}	2453	}
		2454
		2455	static void
		2456	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2457	{
		2458	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2459
		2460	{
		2461	struct ev_loop *loop = w->other;
		2462
		2463	while (fdchangecnt)
		2464	{
		2465	fd_reify (EV_A);
		2466	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2467	}
		2468	}
		2469	}
		2470
		2471	#if 0
		2472	static void
		2473	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2474	{
		2475	ev_idle_stop (EV_A_ idle);
		2476	}
		2477	#endif
2194		2478
2195	void	2479	void
2196	ev_embed_start (EV_P_ ev_embed *w)	2480	ev_embed_start (EV_P_ ev_embed *w)
2197	{	2481	{
2198	if (expect_false (ev_is_active (w)))	2482	if (expect_false (ev_is_active (w)))
2199	return;	2483	return;
2200		2484
2201	{	2485	{
2202	struct ev_loop *loop = w->loop;	2486	struct ev_loop *loop = w->other;
2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2487	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2488	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2205	}	2489	}
2206		2490
2207	ev_set_priority (&w->io, ev_priority (w));	2491	ev_set_priority (&w->io, ev_priority (w));
2208	ev_io_start (EV_A_ &w->io);	2492	ev_io_start (EV_A_ &w->io);
2209		2493
		2494	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2495	ev_set_priority (&w->prepare, EV_MINPRI);
		2496	ev_prepare_start (EV_A_ &w->prepare);
		2497
		2498	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2499
2210	ev_start (EV_A_ (W)w, 1);	2500	ev_start (EV_A_ (W)w, 1);
2211	}	2501	}
2212		2502
2213	void	2503	void
2214	ev_embed_stop (EV_P_ ev_embed *w)	2504	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2216	clear_pending (EV_A_ (W)w);	2506	clear_pending (EV_A_ (W)w);
2217	if (expect_false (!ev_is_active (w)))	2507	if (expect_false (!ev_is_active (w)))
2218	return;	2508	return;
2219		2509
2220	ev_io_stop (EV_A_ &w->io);	2510	ev_io_stop (EV_A_ &w->io);
		2511	ev_prepare_stop (EV_A_ &w->prepare);
2221		2512
2222	ev_stop (EV_A_ (W)w);	2513	ev_stop (EV_A_ (W)w);
2223	}	2514	}
2224	#endif	2515	#endif
2225		2516
…		…
2250		2541
2251	ev_stop (EV_A_ (W)w);	2542	ev_stop (EV_A_ (W)w);
2252	}	2543	}
2253	#endif	2544	#endif
2254		2545
		2546	#if EV_ASYNC_ENABLE
		2547	void
		2548	ev_async_start (EV_P_ ev_async *w)
		2549	{
		2550	if (expect_false (ev_is_active (w)))
		2551	return;
		2552
		2553	evpipe_init (EV_A);
		2554
		2555	ev_start (EV_A_ (W)w, ++asynccnt);
		2556	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2557	asyncs [asynccnt - 1] = w;
		2558	}
		2559
		2560	void
		2561	ev_async_stop (EV_P_ ev_async *w)
		2562	{
		2563	clear_pending (EV_A_ (W)w);
		2564	if (expect_false (!ev_is_active (w)))
		2565	return;
		2566
		2567	{
		2568	int active = ((W)w)->active;
		2569	asyncs [active - 1] = asyncs [--asynccnt];
		2570	((W)asyncs [active - 1])->active = active;
		2571	}
		2572
		2573	ev_stop (EV_A_ (W)w);
		2574	}
		2575
		2576	void
		2577	ev_async_send (EV_P_ ev_async *w)
		2578	{
		2579	w->sent = 1;
		2580	evpipe_write (EV_A_ &gotasync);
		2581	}
		2582	#endif
		2583
2255	/*****************************************************************************/	2584	/*****************************************************************************/
2256		2585
2257	struct ev_once	2586	struct ev_once
2258	{	2587	{
2259	ev_io io;	2588	ev_io io;
…		…
2314	ev_timer_set (&once->to, timeout, 0.);	2643	ev_timer_set (&once->to, timeout, 0.);
2315	ev_timer_start (EV_A_ &once->to);	2644	ev_timer_start (EV_A_ &once->to);
2316	}	2645	}
2317	}	2646	}
2318		2647
		2648	#if EV_MULTIPLICITY
		2649	#include "ev_wrap.h"
		2650	#endif
		2651
2319	#ifdef __cplusplus	2652	#ifdef __cplusplus
2320	}	2653	}
2321	#endif	2654	#endif
2322		2655

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Comparing libev/ev.c (file contents): Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs. Revision 1.228 by root, Fri May 2 08:07:37 2008 UTC

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Comparing libev/ev.c (file contents):
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC vs.
Revision 1.228 by root, Fri May 2 08:07:37 2008 UTC