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Comparing libev/ev.c (file contents):
Revision 1.165 by root, Fri Dec 7 18:09:38 2007 UTC vs.
Revision 1.222 by root, Sun Apr 6 12:45:58 2008 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
…		…
51	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	61	# define EV_USE_MONOTONIC 0
53	# endif	62	# endif
54	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	64	# define EV_USE_REALTIME 0
		65	# endif
		66	# endif
		67
		68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
		70	# define EV_USE_NANOSLEEP 1
		71	# else
		72	# define EV_USE_NANOSLEEP 0
56	# endif	73	# endif
57	# endif	74	# endif
58		75
59	# ifndef EV_USE_SELECT	76	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	119	# else
103	# define EV_USE_INOTIFY 0	120	# define EV_USE_INOTIFY 0
104	# endif	121	# endif
105	# endif	122	# endif
106		123
		124	# ifndef EV_USE_EVENTFD
		125	# if HAVE_EVENTFD
		126	# define EV_USE_EVENTFD 1
		127	# else
		128	# define EV_USE_EVENTFD 0
		129	# endif
		130	# endif
		131
107	#endif	132	#endif
108		133
109	#include <math.h>	134	#include <math.h>
110	#include <stdlib.h>	135	#include <stdlib.h>
111	#include <fcntl.h>	136	#include <fcntl.h>
…		…
136	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	163	# endif
139	#endif	164	#endif
140		165
141	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		167
143	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
144	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
145	#endif	170	#endif
146		171
147	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
149	#endif	178	#endif
150		179
151	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
153	#endif	182	#endif
…		…
159	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
160	# endif	189	# endif
161	#endif	190	#endif
162		191
163	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
164	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
165	#endif	198	#endif
166		199
167	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
169	#endif	202	#endif
…		…
171	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
173	#endif	206	#endif
174		207
175	#ifndef EV_USE_INOTIFY	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
176	# define EV_USE_INOTIFY 0	212	# define EV_USE_INOTIFY 0
		213	# endif
177	#endif	214	#endif
178		215
179	#ifndef EV_PID_HASHSIZE	216	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	217	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	218	# define EV_PID_HASHSIZE 1
…		…
190	# else	227	# else
191	# define EV_INOTIFY_HASHSIZE 16	228	# define EV_INOTIFY_HASHSIZE 16
192	# endif	229	# endif
193	#endif	230	#endif
194		231
195	/**/	232	#ifndef EV_USE_EVENTFD
		233	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		234	# define EV_USE_EVENTFD 1
		235	# else
		236	# define EV_USE_EVENTFD 0
		237	# endif
		238	#endif
		239
		240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		241
197	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
200	#endif	245	#endif
…		…
202	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
205	#endif	250	#endif
206		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
207	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	268	# include <winsock.h>
209	#endif	269	#endif
210		270
211	#if !EV_STAT_ENABLE	271	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
213	#endif	276	# endif
214		277	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	278	# ifdef __cplusplus
216	# include <sys/inotify.h>	279	}
		280	# endif
217	#endif	281	#endif
218		282
219	/**/	283	/**/
		284
		285	/*
		286	* This is used to avoid floating point rounding problems.
		287	* It is added to ev_rt_now when scheduling periodics
		288	* to ensure progress, time-wise, even when rounding
		289	* errors are against us.
		290	* This value is good at least till the year 4000.
		291	* Better solutions welcome.
		292	*/
		293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		294
221	#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) */
222	#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) */
223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224		298
225	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	301	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	302	#else
236	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	304	# define noinline
		305	# if __STDC_VERSION__ < 199901L
		306	# define inline
		307	# endif
240	#endif	308	#endif
241		309
242	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	311	#define expect_true(expr) expect ((expr) != 0, 1)
		312	#define inline_size static inline
		313
		314	#if EV_MINIMAL
		315	# define inline_speed static noinline
		316	#else
		317	# define inline_speed static inline
		318	#endif
244		319
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		322
248	#define EMPTY /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
…		…
250		325
251	typedef ev_watcher *W;	326	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
254		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 */
255	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
256		335
257	#ifdef _WIN32	336	#ifdef _WIN32
258	# include "ev_win32.c"	337	# include "ev_win32.c"
259	#endif	338	#endif
260		339
…		…
396	{	475	{
397	return ev_rt_now;	476	return ev_rt_now;
398	}	477	}
399	#endif	478	#endif
400		479
		480	void
		481	ev_sleep (ev_tstamp delay)
		482	{
		483	if (delay > 0.)
		484	{
		485	#if EV_USE_NANOSLEEP
		486	struct timespec ts;
		487
		488	ts.tv_sec = (time_t)delay;
		489	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		490
		491	nanosleep (&ts, 0);
		492	#elif defined(_WIN32)
		493	Sleep ((unsigned long)(delay * 1e3));
		494	#else
		495	struct timeval tv;
		496
		497	tv.tv_sec = (time_t)delay;
		498	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		499
		500	select (0, 0, 0, 0, &tv);
		501	#endif
		502	}
		503	}
		504
		505	/*****************************************************************************/
		506
401	int inline_size	507	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	508	array_nextsize (int elem, int cur, int cnt)
403	{	509	{
404	int ncur = cur + 1;	510	int ncur = cur + 1;
405		511
…		…
417	}	523	}
418		524
419	return ncur;	525	return ncur;
420	}	526	}
421		527
422	inline_speed void *	528	static noinline void *
423	array_realloc (int elem, void *base, int *cur, int cnt)	529	array_realloc (int elem, void *base, int *cur, int cnt)
424	{	530	{
425	*cur = array_nextsize (elem, *cur, cnt);	531	*cur = array_nextsize (elem, *cur, cnt);
426	return ev_realloc (base, elem * *cur);	532	return ev_realloc (base, elem * *cur);
427	}	533	}
…		…
452		558
453	void noinline	559	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	560	ev_feed_event (EV_P_ void *w, int revents)
455	{	561	{
456	W w_ = (W)w;	562	W w_ = (W)w;
		563	int pri = ABSPRI (w_);
457		564
458	if (expect_false (w_->pending))	565	if (expect_false (w_->pending))
		566	pendings [pri][w_->pending - 1].events |= revents;
		567	else
459	{	568	{
		569	w_->pending = ++pendingcnt [pri];
		570	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		571	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	572	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	573	}
463
464	w_->pending = ++pendingcnt [ABSPRI (w_)];
465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468	}	574	}
469		575
470	void inline_size	576	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	577	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	578	{
473	int i;	579	int i;
474		580
475	for (i = 0; i < eventcnt; ++i)	581	for (i = 0; i < eventcnt; ++i)
…		…
507	}	613	}
508		614
509	void	615	void
510	ev_feed_fd_event (EV_P_ int fd, int revents)	616	ev_feed_fd_event (EV_P_ int fd, int revents)
511	{	617	{
		618	if (fd >= 0 && fd < anfdmax)
512	fd_event (EV_A_ fd, revents);	619	fd_event (EV_A_ fd, revents);
513	}	620	}
514		621
515	void inline_size	622	void inline_size
516	fd_reify (EV_P)	623	fd_reify (EV_P)
517	{	624	{
…		…
521	{	628	{
522	int fd = fdchanges [i];	629	int fd = fdchanges [i];
523	ANFD *anfd = anfds + fd;	630	ANFD *anfd = anfds + fd;
524	ev_io *w;	631	ev_io *w;
525		632
526	int events = 0;	633	unsigned char events = 0;
527		634
528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	635	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
529	events |= w->events;	636	events |= (unsigned char)w->events;
530		637
531	#if EV_SELECT_IS_WINSOCKET	638	#if EV_SELECT_IS_WINSOCKET
532	if (events)	639	if (events)
533	{	640	{
534	unsigned long argp;	641	unsigned long argp;
		642	#ifdef EV_FD_TO_WIN32_HANDLE
		643	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		644	#else
535	anfd->handle = _get_osfhandle (fd);	645	anfd->handle = _get_osfhandle (fd);
		646	#endif
536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	647	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537	}	648	}
538	#endif	649	#endif
539		650
		651	{
		652	unsigned char o_events = anfd->events;
		653	unsigned char o_reify = anfd->reify;
		654
540	anfd->reify = 0;	655	anfd->reify = 0;
541
542	backend_modify (EV_A_ fd, anfd->events, events);
543	anfd->events = events;	656	anfd->events = events;
		657
		658	if (o_events != events || o_reify & EV_IOFDSET)
		659	backend_modify (EV_A_ fd, o_events, events);
		660	}
544	}	661	}
545		662
546	fdchangecnt = 0;	663	fdchangecnt = 0;
547	}	664	}
548		665
549	void inline_size	666	void inline_size
550	fd_change (EV_P_ int fd)	667	fd_change (EV_P_ int fd, int flags)
551	{	668	{
552	if (expect_false (anfds [fd].reify))	669	unsigned char reify = anfds [fd].reify;
553	return;
554
555	anfds [fd].reify = 1;	670	anfds [fd].reify |= flags;
556		671
		672	if (expect_true (!reify))
		673	{
557	++fdchangecnt;	674	++fdchangecnt;
558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	675	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559	fdchanges [fdchangecnt - 1] = fd;	676	fdchanges [fdchangecnt - 1] = fd;
		677	}
560	}	678	}
561		679
562	void inline_speed	680	void inline_speed
563	fd_kill (EV_P_ int fd)	681	fd_kill (EV_P_ int fd)
564	{	682	{
…		…
615		733
616	for (fd = 0; fd < anfdmax; ++fd)	734	for (fd = 0; fd < anfdmax; ++fd)
617	if (anfds [fd].events)	735	if (anfds [fd].events)
618	{	736	{
619	anfds [fd].events = 0;	737	anfds [fd].events = 0;
620	fd_change (EV_A_ fd);	738	fd_change (EV_A_ fd, EV_IOFDSET | 1);
621	}	739	}
622	}	740	}
623		741
624	/*****************************************************************************/	742	/*****************************************************************************/
625		743
626	void inline_speed	744	void inline_speed
627	upheap (WT *heap, int k)	745	upheap (WT *heap, int k)
628	{	746	{
629	WT w = heap [k];	747	WT w = heap [k];
630		748
631	while (k && heap [k >> 1]->at > w->at)	749	while (k)
632	{	750	{
		751	int p = (k - 1) >> 1;
		752
		753	if (heap [p]->at <= w->at)
		754	break;
		755
633	heap [k] = heap [k >> 1];	756	heap [k] = heap [p];
634	((W)heap [k])->active = k + 1;	757	((W)heap [k])->active = k + 1;
635	k >>= 1;	758	k = p;
636	}	759	}
637		760
638	heap [k] = w;	761	heap [k] = w;
639	((W)heap [k])->active = k + 1;	762	((W)heap [k])->active = k + 1;
640
641	}	763	}
642		764
643	void inline_speed	765	void inline_speed
644	downheap (WT *heap, int N, int k)	766	downheap (WT *heap, int N, int k)
645	{	767	{
646	WT w = heap [k];	768	WT w = heap [k];
647		769
648	while (k < (N >> 1))	770	for (;;)
649	{	771	{
650	int j = k << 1;	772	int c = (k << 1) + 1;
651		773
652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	774	if (c >= N)
653	++j;
654
655	if (w->at <= heap [j]->at)
656	break;	775	break;
657		776
		777	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		778	? 1 : 0;
		779
		780	if (w->at <= heap [c]->at)
		781	break;
		782
658	heap [k] = heap [j];	783	heap [k] = heap [c];
659	((W)heap [k])->active = k + 1;	784	((W)heap [k])->active = k + 1;
		785
660	k = j;	786	k = c;
661	}	787	}
662		788
663	heap [k] = w;	789	heap [k] = w;
664	((W)heap [k])->active = k + 1;	790	((W)heap [k])->active = k + 1;
665	}	791	}
…		…
674	/*****************************************************************************/	800	/*****************************************************************************/
675		801
676	typedef struct	802	typedef struct
677	{	803	{
678	WL head;	804	WL head;
679	sig_atomic_t volatile gotsig;	805	EV_ATOMIC_T gotsig;
680	} ANSIG;	806	} ANSIG;
681		807
682	static ANSIG *signals;	808	static ANSIG *signals;
683	static int signalmax;	809	static int signalmax;
684		810
685	static int sigpipe [2];	811	static EV_ATOMIC_T gotsig;
686	static sig_atomic_t volatile gotsig;
687	static ev_io sigev;
688		812
689	void inline_size	813	void inline_size
690	signals_init (ANSIG *base, int count)	814	signals_init (ANSIG *base, int count)
691	{	815	{
692	while (count--)	816	while (count--)
…		…
696		820
697	++base;	821	++base;
698	}	822	}
699	}	823	}
700		824
701	static void	825	/*****************************************************************************/
702	sighandler (int signum)
703	{
704	#if _WIN32
705	signal (signum, sighandler);
706	#endif
707		826
708	signals [signum - 1].gotsig = 1;
709
710	if (!gotsig)
711	{
712	int old_errno = errno;
713	gotsig = 1;
714	write (sigpipe [1], &signum, 1);
715	errno = old_errno;
716	}
717	}
718
719	void noinline
720	ev_feed_signal_event (EV_P_ int signum)
721	{
722	WL w;
723
724	#if EV_MULTIPLICITY
725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726	#endif
727
728	--signum;
729
730	if (signum < 0 || signum >= signalmax)
731	return;
732
733	signals [signum].gotsig = 0;
734
735	for (w = signals [signum].head; w; w = w->next)
736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737	}
738
739	static void
740	sigcb (EV_P_ ev_io *iow, int revents)
741	{
742	int signum;
743
744	read (sigpipe [0], &revents, 1);
745	gotsig = 0;
746
747	for (signum = signalmax; signum--; )
748	if (signals [signum].gotsig)
749	ev_feed_signal_event (EV_A_ signum + 1);
750	}
751
752	void inline_size	827	void inline_speed
753	fd_intern (int fd)	828	fd_intern (int fd)
754	{	829	{
755	#ifdef _WIN32	830	#ifdef _WIN32
756	int arg = 1;	831	int arg = 1;
757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
760	fcntl (fd, F_SETFL, O_NONBLOCK);	835	fcntl (fd, F_SETFL, O_NONBLOCK);
761	#endif	836	#endif
762	}	837	}
763		838
764	static void noinline	839	static void noinline
765	siginit (EV_P)	840	evpipe_init (EV_P)
766	{	841	{
		842	if (!ev_is_active (&pipeev))
		843	{
		844	#if EV_USE_EVENTFD
		845	if ((evfd = eventfd (0, 0)) >= 0)
		846	{
		847	evpipe [0] = -1;
		848	fd_intern (evfd);
		849	ev_io_set (&pipeev, evfd, EV_READ);
		850	}
		851	else
		852	#endif
		853	{
		854	while (pipe (evpipe))
		855	syserr ("(libev) error creating signal/async pipe");
		856
767	fd_intern (sigpipe [0]);	857	fd_intern (evpipe [0]);
768	fd_intern (sigpipe [1]);	858	fd_intern (evpipe [1]);
		859	ev_io_set (&pipeev, evpipe [0], EV_READ);
		860	}
769		861
770	ev_io_set (&sigev, sigpipe [0], EV_READ);
771	ev_io_start (EV_A_ &sigev);	862	ev_io_start (EV_A_ &pipeev);
772	ev_unref (EV_A); /* child watcher should not keep loop alive */	863	ev_unref (EV_A); /* watcher should not keep loop alive */
		864	}
		865	}
		866
		867	void inline_size
		868	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		869	{
		870	if (!*flag)
		871	{
		872	int old_errno = errno; /* save errno because write might clobber it */
		873
		874	*flag = 1;
		875
		876	#if EV_USE_EVENTFD
		877	if (evfd >= 0)
		878	{
		879	uint64_t counter = 1;
		880	write (evfd, &counter, sizeof (uint64_t));
		881	}
		882	else
		883	#endif
		884	write (evpipe [1], &old_errno, 1);
		885
		886	errno = old_errno;
		887	}
		888	}
		889
		890	static void
		891	pipecb (EV_P_ ev_io *iow, int revents)
		892	{
		893	#if EV_USE_EVENTFD
		894	if (evfd >= 0)
		895	{
		896	uint64_t counter = 1;
		897	read (evfd, &counter, sizeof (uint64_t));
		898	}
		899	else
		900	#endif
		901	{
		902	char dummy;
		903	read (evpipe [0], &dummy, 1);
		904	}
		905
		906	if (gotsig && ev_is_default_loop (EV_A))
		907	{
		908	int signum;
		909	gotsig = 0;
		910
		911	for (signum = signalmax; signum--; )
		912	if (signals [signum].gotsig)
		913	ev_feed_signal_event (EV_A_ signum + 1);
		914	}
		915
		916	#if EV_ASYNC_ENABLE
		917	if (gotasync)
		918	{
		919	int i;
		920	gotasync = 0;
		921
		922	for (i = asynccnt; i--; )
		923	if (asyncs [i]->sent)
		924	{
		925	asyncs [i]->sent = 0;
		926	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		927	}
		928	}
		929	#endif
773	}	930	}
774		931
775	/*****************************************************************************/	932	/*****************************************************************************/
776		933
		934	static void
		935	ev_sighandler (int signum)
		936	{
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *loop = &default_loop_struct;
		939	#endif
		940
		941	#if _WIN32
		942	signal (signum, ev_sighandler);
		943	#endif
		944
		945	signals [signum - 1].gotsig = 1;
		946	evpipe_write (EV_A_ &gotsig);
		947	}
		948
		949	void noinline
		950	ev_feed_signal_event (EV_P_ int signum)
		951	{
		952	WL w;
		953
		954	#if EV_MULTIPLICITY
		955	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		956	#endif
		957
		958	--signum;
		959
		960	if (signum < 0 || signum >= signalmax)
		961	return;
		962
		963	signals [signum].gotsig = 0;
		964
		965	for (w = signals [signum].head; w; w = w->next)
		966	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		967	}
		968
		969	/*****************************************************************************/
		970
777	static ev_child *childs [EV_PID_HASHSIZE];	971	static WL childs [EV_PID_HASHSIZE];
778		972
779	#ifndef _WIN32	973	#ifndef _WIN32
780		974
781	static ev_signal childev;	975	static ev_signal childev;
782		976
		977	#ifndef WIFCONTINUED
		978	# define WIFCONTINUED(status) 0
		979	#endif
		980
783	void inline_speed	981	void inline_speed
784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	982	child_reap (EV_P_ int chain, int pid, int status)
785	{	983	{
786	ev_child *w;	984	ev_child *w;
		985	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
787		986
788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	987	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		988	{
789	if (w->pid == pid || !w->pid)	989	if ((w->pid == pid || !w->pid)
		990	&& (!traced || (w->flags & 1)))
790	{	991	{
791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	992	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
792	w->rpid = pid;	993	w->rpid = pid;
793	w->rstatus = status;	994	w->rstatus = status;
794	ev_feed_event (EV_A_ (W)w, EV_CHILD);	995	ev_feed_event (EV_A_ (W)w, EV_CHILD);
795	}	996	}
		997	}
796	}	998	}
797		999
798	#ifndef WCONTINUED	1000	#ifndef WCONTINUED
799	# define WCONTINUED 0	1001	# define WCONTINUED 0
800	#endif	1002	#endif
…		…
809	if (!WCONTINUED	1011	if (!WCONTINUED
810	|| errno != EINVAL	1012	|| errno != EINVAL
811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1013	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812	return;	1014	return;
813		1015
814	/* make sure we are called again until all childs have been reaped */	1016	/* make sure we are called again until all children have been reaped */
815	/* we need to do it this way so that the callback gets called before we continue */	1017	/* we need to do it this way so that the callback gets called before we continue */
816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1018	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817		1019
818	child_reap (EV_A_ sw, pid, pid, status);	1020	child_reap (EV_A_ pid, pid, status);
819	if (EV_PID_HASHSIZE > 1)	1021	if (EV_PID_HASHSIZE > 1)
820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1022	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
821	}	1023	}
822		1024
823	#endif	1025	#endif
824		1026
825	/*****************************************************************************/	1027	/*****************************************************************************/
…		…
897	}	1099	}
898		1100
899	unsigned int	1101	unsigned int
900	ev_embeddable_backends (void)	1102	ev_embeddable_backends (void)
901	{	1103	{
902	return EVBACKEND_EPOLL	1104	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
903	| EVBACKEND_KQUEUE	1105
904	| EVBACKEND_PORT;	1106	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1107	/* please fix it and tell me how to detect the fix */
		1108	flags &= ~EVBACKEND_EPOLL;
		1109
		1110	return flags;
905	}	1111	}
906		1112
907	unsigned int	1113	unsigned int
908	ev_backend (EV_P)	1114	ev_backend (EV_P)
909	{	1115	{
…		…
912		1118
913	unsigned int	1119	unsigned int
914	ev_loop_count (EV_P)	1120	ev_loop_count (EV_P)
915	{	1121	{
916	return loop_count;	1122	return loop_count;
		1123	}
		1124
		1125	void
		1126	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1127	{
		1128	io_blocktime = interval;
		1129	}
		1130
		1131	void
		1132	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1133	{
		1134	timeout_blocktime = interval;
917	}	1135	}
918		1136
919	static void noinline	1137	static void noinline
920	loop_init (EV_P_ unsigned int flags)	1138	loop_init (EV_P_ unsigned int flags)
921	{	1139	{
…		…
927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1145	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928	have_monotonic = 1;	1146	have_monotonic = 1;
929	}	1147	}
930	#endif	1148	#endif
931		1149
932	ev_rt_now = ev_time ();	1150	ev_rt_now = ev_time ();
933	mn_now = get_clock ();	1151	mn_now = get_clock ();
934	now_floor = mn_now;	1152	now_floor = mn_now;
935	rtmn_diff = ev_rt_now - mn_now;	1153	rtmn_diff = ev_rt_now - mn_now;
		1154
		1155	io_blocktime = 0.;
		1156	timeout_blocktime = 0.;
		1157	backend = 0;
		1158	backend_fd = -1;
		1159	gotasync = 0;
		1160	#if EV_USE_INOTIFY
		1161	fs_fd = -2;
		1162	#endif
936		1163
937	/* pid check not overridable via env */	1164	/* pid check not overridable via env */
938	#ifndef _WIN32	1165	#ifndef _WIN32
939	if (flags & EVFLAG_FORKCHECK)	1166	if (flags & EVFLAG_FORKCHECK)
940	curpid = getpid ();	1167	curpid = getpid ();
…		…
946	flags = atoi (getenv ("LIBEV_FLAGS"));	1173	flags = atoi (getenv ("LIBEV_FLAGS"));
947		1174
948	if (!(flags & 0x0000ffffUL))	1175	if (!(flags & 0x0000ffffUL))
949	flags |= ev_recommended_backends ();	1176	flags |= ev_recommended_backends ();
950		1177
951	backend = 0;
952	backend_fd = -1;
953	#if EV_USE_INOTIFY
954	fs_fd = -2;
955	#endif
956
957	#if EV_USE_PORT	1178	#if EV_USE_PORT
958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1179	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959	#endif	1180	#endif
960	#if EV_USE_KQUEUE	1181	#if EV_USE_KQUEUE
961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1182	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
968	#endif	1189	#endif
969	#if EV_USE_SELECT	1190	#if EV_USE_SELECT
970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1191	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971	#endif	1192	#endif
972		1193
973	ev_init (&sigev, sigcb);	1194	ev_init (&pipeev, pipecb);
974	ev_set_priority (&sigev, EV_MAXPRI);	1195	ev_set_priority (&pipeev, EV_MAXPRI);
975	}	1196	}
976	}	1197	}
977		1198
978	static void noinline	1199	static void noinline
979	loop_destroy (EV_P)	1200	loop_destroy (EV_P)
980	{	1201	{
981	int i;	1202	int i;
		1203
		1204	if (ev_is_active (&pipeev))
		1205	{
		1206	ev_ref (EV_A); /* signal watcher */
		1207	ev_io_stop (EV_A_ &pipeev);
		1208
		1209	#if EV_USE_EVENTFD
		1210	if (evfd >= 0)
		1211	close (evfd);
		1212	#endif
		1213
		1214	if (evpipe [0] >= 0)
		1215	{
		1216	close (evpipe [0]);
		1217	close (evpipe [1]);
		1218	}
		1219	}
982		1220
983	#if EV_USE_INOTIFY	1221	#if EV_USE_INOTIFY
984	if (fs_fd >= 0)	1222	if (fs_fd >= 0)
985	close (fs_fd);	1223	close (fs_fd);
986	#endif	1224	#endif
…		…
1009	array_free (pending, [i]);	1247	array_free (pending, [i]);
1010	#if EV_IDLE_ENABLE	1248	#if EV_IDLE_ENABLE
1011	array_free (idle, [i]);	1249	array_free (idle, [i]);
1012	#endif	1250	#endif
1013	}	1251	}
		1252
		1253	ev_free (anfds); anfdmax = 0;
1014		1254
1015	/* have to use the microsoft-never-gets-it-right macro */	1255	/* have to use the microsoft-never-gets-it-right macro */
1016	array_free (fdchange, EMPTY);	1256	array_free (fdchange, EMPTY);
1017	array_free (timer, EMPTY);	1257	array_free (timer, EMPTY);
1018	#if EV_PERIODIC_ENABLE	1258	#if EV_PERIODIC_ENABLE
1019	array_free (periodic, EMPTY);	1259	array_free (periodic, EMPTY);
1020	#endif	1260	#endif
		1261	#if EV_FORK_ENABLE
		1262	array_free (fork, EMPTY);
		1263	#endif
1021	array_free (prepare, EMPTY);	1264	array_free (prepare, EMPTY);
1022	array_free (check, EMPTY);	1265	array_free (check, EMPTY);
		1266	#if EV_ASYNC_ENABLE
		1267	array_free (async, EMPTY);
		1268	#endif
1023		1269
1024	backend = 0;	1270	backend = 0;
1025	}	1271	}
1026		1272
1027	void inline_size infy_fork (EV_P);	1273	void inline_size infy_fork (EV_P);
…		…
1040	#endif	1286	#endif
1041	#if EV_USE_INOTIFY	1287	#if EV_USE_INOTIFY
1042	infy_fork (EV_A);	1288	infy_fork (EV_A);
1043	#endif	1289	#endif
1044		1290
1045	if (ev_is_active (&sigev))	1291	if (ev_is_active (&pipeev))
1046	{	1292	{
1047	/* default loop */	1293	/* this "locks" the handlers against writing to the pipe */
		1294	/* while we modify the fd vars */
		1295	gotsig = 1;
		1296	#if EV_ASYNC_ENABLE
		1297	gotasync = 1;
		1298	#endif
1048		1299
1049	ev_ref (EV_A);	1300	ev_ref (EV_A);
1050	ev_io_stop (EV_A_ &sigev);	1301	ev_io_stop (EV_A_ &pipeev);
		1302
		1303	#if EV_USE_EVENTFD
		1304	if (evfd >= 0)
		1305	close (evfd);
		1306	#endif
		1307
		1308	if (evpipe [0] >= 0)
		1309	{
1051	close (sigpipe [0]);	1310	close (evpipe [0]);
1052	close (sigpipe [1]);	1311	close (evpipe [1]);
		1312	}
1053		1313
1054	while (pipe (sigpipe))
1055	syserr ("(libev) error creating pipe");
1056
1057	siginit (EV_A);	1314	evpipe_init (EV_A);
		1315	/* now iterate over everything, in case we missed something */
		1316	pipecb (EV_A_ &pipeev, EV_READ);
1058	}	1317	}
1059		1318
1060	postfork = 0;	1319	postfork = 0;
1061	}	1320	}
1062		1321
…		…
1084	}	1343	}
1085		1344
1086	void	1345	void
1087	ev_loop_fork (EV_P)	1346	ev_loop_fork (EV_P)
1088	{	1347	{
1089	postfork = 1;	1348	postfork = 1; /* must be in line with ev_default_fork */
1090	}	1349	}
1091		1350
1092	#endif	1351	#endif
1093		1352
1094	#if EV_MULTIPLICITY	1353	#if EV_MULTIPLICITY
…		…
1097	#else	1356	#else
1098	int	1357	int
1099	ev_default_loop (unsigned int flags)	1358	ev_default_loop (unsigned int flags)
1100	#endif	1359	#endif
1101	{	1360	{
1102	if (sigpipe [0] == sigpipe [1])
1103	if (pipe (sigpipe))
1104	return 0;
1105
1106	if (!ev_default_loop_ptr)	1361	if (!ev_default_loop_ptr)
1107	{	1362	{
1108	#if EV_MULTIPLICITY	1363	#if EV_MULTIPLICITY
1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1364	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1110	#else	1365	#else
…		…
1113		1368
1114	loop_init (EV_A_ flags);	1369	loop_init (EV_A_ flags);
1115		1370
1116	if (ev_backend (EV_A))	1371	if (ev_backend (EV_A))
1117	{	1372	{
1118	siginit (EV_A);
1119
1120	#ifndef _WIN32	1373	#ifndef _WIN32
1121	ev_signal_init (&childev, childcb, SIGCHLD);	1374	ev_signal_init (&childev, childcb, SIGCHLD);
1122	ev_set_priority (&childev, EV_MAXPRI);	1375	ev_set_priority (&childev, EV_MAXPRI);
1123	ev_signal_start (EV_A_ &childev);	1376	ev_signal_start (EV_A_ &childev);
1124	ev_unref (EV_A); /* child watcher should not keep loop alive */	1377	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1141	#ifndef _WIN32	1394	#ifndef _WIN32
1142	ev_ref (EV_A); /* child watcher */	1395	ev_ref (EV_A); /* child watcher */
1143	ev_signal_stop (EV_A_ &childev);	1396	ev_signal_stop (EV_A_ &childev);
1144	#endif	1397	#endif
1145		1398
1146	ev_ref (EV_A); /* signal watcher */
1147	ev_io_stop (EV_A_ &sigev);
1148
1149	close (sigpipe [0]); sigpipe [0] = 0;
1150	close (sigpipe [1]); sigpipe [1] = 0;
1151
1152	loop_destroy (EV_A);	1399	loop_destroy (EV_A);
1153	}	1400	}
1154		1401
1155	void	1402	void
1156	ev_default_fork (void)	1403	ev_default_fork (void)
…		…
1158	#if EV_MULTIPLICITY	1405	#if EV_MULTIPLICITY
1159	struct ev_loop *loop = ev_default_loop_ptr;	1406	struct ev_loop *loop = ev_default_loop_ptr;
1160	#endif	1407	#endif
1161		1408
1162	if (backend)	1409	if (backend)
1163	postfork = 1;	1410	postfork = 1; /* must be in line with ev_loop_fork */
1164	}	1411	}
1165		1412
1166	/*****************************************************************************/	1413	/*****************************************************************************/
		1414
		1415	void
		1416	ev_invoke (EV_P_ void *w, int revents)
		1417	{
		1418	EV_CB_INVOKE ((W)w, revents);
		1419	}
1167		1420
1168	void inline_speed	1421	void inline_speed
1169	call_pending (EV_P)	1422	call_pending (EV_P)
1170	{	1423	{
1171	int pri;	1424	int pri;
…		…
1188	void inline_size	1441	void inline_size
1189	timers_reify (EV_P)	1442	timers_reify (EV_P)
1190	{	1443	{
1191	while (timercnt && ((WT)timers [0])->at <= mn_now)	1444	while (timercnt && ((WT)timers [0])->at <= mn_now)
1192	{	1445	{
1193	ev_timer *w = timers [0];	1446	ev_timer *w = (ev_timer *)timers [0];
1194		1447
1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/	1448	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1196		1449
1197	/* first reschedule or stop timer */	1450	/* first reschedule or stop timer */
1198	if (w->repeat)	1451	if (w->repeat)
…		…
1201		1454
1202	((WT)w)->at += w->repeat;	1455	((WT)w)->at += w->repeat;
1203	if (((WT)w)->at < mn_now)	1456	if (((WT)w)->at < mn_now)
1204	((WT)w)->at = mn_now;	1457	((WT)w)->at = mn_now;
1205		1458
1206	downheap ((WT *)timers, timercnt, 0);	1459	downheap (timers, timercnt, 0);
1207	}	1460	}
1208	else	1461	else
1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1462	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1210		1463
1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1464	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1216	void inline_size	1469	void inline_size
1217	periodics_reify (EV_P)	1470	periodics_reify (EV_P)
1218	{	1471	{
1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1472	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1220	{	1473	{
1221	ev_periodic *w = periodics [0];	1474	ev_periodic *w = (ev_periodic *)periodics [0];
1222		1475
1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1476	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1224		1477
1225	/* first reschedule or stop timer */	1478	/* first reschedule or stop timer */
1226	if (w->reschedule_cb)	1479	if (w->reschedule_cb)
1227	{	1480	{
1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1481	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1482	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1230	downheap ((WT *)periodics, periodiccnt, 0);	1483	downheap (periodics, periodiccnt, 0);
1231	}	1484	}
1232	else if (w->interval)	1485	else if (w->interval)
1233	{	1486	{
1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1487	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1488	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1489	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1236	downheap ((WT *)periodics, periodiccnt, 0);	1490	downheap (periodics, periodiccnt, 0);
1237	}	1491	}
1238	else	1492	else
1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1493	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1240		1494
1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1495	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1248	int i;	1502	int i;
1249		1503
1250	/* adjust periodics after time jump */	1504	/* adjust periodics after time jump */
1251	for (i = 0; i < periodiccnt; ++i)	1505	for (i = 0; i < periodiccnt; ++i)
1252	{	1506	{
1253	ev_periodic *w = periodics [i];	1507	ev_periodic *w = (ev_periodic *)periodics [i];
1254		1508
1255	if (w->reschedule_cb)	1509	if (w->reschedule_cb)
1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1510	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1257	else if (w->interval)	1511	else if (w->interval)
1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1512	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1259	}	1513	}
1260		1514
1261	/* now rebuild the heap */	1515	/* now rebuild the heap */
1262	for (i = periodiccnt >> 1; i--; )	1516	for (i = periodiccnt >> 1; i--; )
1263	downheap ((WT *)periodics, periodiccnt, i);	1517	downheap (periodics, periodiccnt, i);
1264	}	1518	}
1265	#endif	1519	#endif
1266		1520
1267	#if EV_IDLE_ENABLE	1521	#if EV_IDLE_ENABLE
1268	void inline_size	1522	void inline_size
…		…
1285	}	1539	}
1286	}	1540	}
1287	}	1541	}
1288	#endif	1542	#endif
1289		1543
1290	int inline_size	1544	void inline_speed
1291	time_update_monotonic (EV_P)	1545	time_update (EV_P_ ev_tstamp max_block)
1292	{	1546	{
		1547	int i;
		1548
		1549	#if EV_USE_MONOTONIC
		1550	if (expect_true (have_monotonic))
		1551	{
		1552	ev_tstamp odiff = rtmn_diff;
		1553
1293	mn_now = get_clock ();	1554	mn_now = get_clock ();
1294		1555
		1556	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1557	/* interpolate in the meantime */
1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1558	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1296	{	1559	{
1297	ev_rt_now = rtmn_diff + mn_now;	1560	ev_rt_now = rtmn_diff + mn_now;
1298	return 0;	1561	return;
1299	}	1562	}
1300	else	1563
1301	{
1302	now_floor = mn_now;	1564	now_floor = mn_now;
1303	ev_rt_now = ev_time ();	1565	ev_rt_now = ev_time ();
1304	return 1;
1305	}
1306	}
1307		1566
1308	void inline_size	1567	/* loop a few times, before making important decisions.
1309	time_update (EV_P)	1568	* on the choice of "4": one iteration isn't enough,
1310	{	1569	* in case we get preempted during the calls to
1311	int i;	1570	* ev_time and get_clock. a second call is almost guaranteed
1312		1571	* to succeed in that case, though. and looping a few more times
1313	#if EV_USE_MONOTONIC	1572	* doesn't hurt either as we only do this on time-jumps or
1314	if (expect_true (have_monotonic))	1573	* in the unlikely event of having been preempted here.
1315	{	1574	*/
1316	if (time_update_monotonic (EV_A))	1575	for (i = 4; --i; )
1317	{	1576	{
1318	ev_tstamp odiff = rtmn_diff;
1319
1320	/* loop a few times, before making important decisions.
1321	* on the choice of "4": one iteration isn't enough,
1322	* in case we get preempted during the calls to
1323	* ev_time and get_clock. a second call is almost guaranteed
1324	* to succeed in that case, though. and looping a few more times
1325	* doesn't hurt either as we only do this on time-jumps or
1326	* in the unlikely event of having been preempted here.
1327	*/
1328	for (i = 4; --i; )
1329	{
1330	rtmn_diff = ev_rt_now - mn_now;	1577	rtmn_diff = ev_rt_now - mn_now;
1331		1578
1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1579	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1333	return; /* all is well */	1580	return; /* all is well */
1334		1581
1335	ev_rt_now = ev_time ();	1582	ev_rt_now = ev_time ();
1336	mn_now = get_clock ();	1583	mn_now = get_clock ();
1337	now_floor = mn_now;	1584	now_floor = mn_now;
1338	}	1585	}
1339		1586
1340	# if EV_PERIODIC_ENABLE	1587	# if EV_PERIODIC_ENABLE
1341	periodics_reschedule (EV_A);	1588	periodics_reschedule (EV_A);
1342	# endif	1589	# endif
1343	/* no timer adjustment, as the monotonic clock doesn't jump */	1590	/* no timer adjustment, as the monotonic clock doesn't jump */
1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1591	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1345	}
1346	}	1592	}
1347	else	1593	else
1348	#endif	1594	#endif
1349	{	1595	{
1350	ev_rt_now = ev_time ();	1596	ev_rt_now = ev_time ();
1351		1597
1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1598	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1353	{	1599	{
1354	#if EV_PERIODIC_ENABLE	1600	#if EV_PERIODIC_ENABLE
1355	periodics_reschedule (EV_A);	1601	periodics_reschedule (EV_A);
1356	#endif	1602	#endif
1357
1358	/* adjust timers. this is easy, as the offset is the same for all of them */	1603	/* adjust timers. this is easy, as the offset is the same for all of them */
1359	for (i = 0; i < timercnt; ++i)	1604	for (i = 0; i < timercnt; ++i)
1360	((WT)timers [i])->at += ev_rt_now - mn_now;	1605	((WT)timers [i])->at += ev_rt_now - mn_now;
1361	}	1606	}
1362		1607
…		…
1379	static int loop_done;	1624	static int loop_done;
1380		1625
1381	void	1626	void
1382	ev_loop (EV_P_ int flags)	1627	ev_loop (EV_P_ int flags)
1383	{	1628	{
1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1629	loop_done = EVUNLOOP_CANCEL;
1385	? EVUNLOOP_ONE
1386	: EVUNLOOP_CANCEL;
1387		1630
1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1631	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1389		1632
1390	do	1633	do
1391	{	1634	{
…		…
1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1649	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1407	call_pending (EV_A);	1650	call_pending (EV_A);
1408	}	1651	}
1409	#endif	1652	#endif
1410		1653
1411	/* queue check watchers (and execute them) */	1654	/* queue prepare watchers (and execute them) */
1412	if (expect_false (preparecnt))	1655	if (expect_false (preparecnt))
1413	{	1656	{
1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1657	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1415	call_pending (EV_A);	1658	call_pending (EV_A);
1416	}	1659	}
…		…
1425	/* update fd-related kernel structures */	1668	/* update fd-related kernel structures */
1426	fd_reify (EV_A);	1669	fd_reify (EV_A);
1427		1670
1428	/* calculate blocking time */	1671	/* calculate blocking time */
1429	{	1672	{
1430	ev_tstamp block;	1673	ev_tstamp waittime = 0.;
		1674	ev_tstamp sleeptime = 0.;
1431		1675
1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1676	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1433	block = 0.; /* do not block at all */
1434	else
1435	{	1677	{
1436	/* update time to cancel out callback processing overhead */	1678	/* update time to cancel out callback processing overhead */
1437	#if EV_USE_MONOTONIC
1438	if (expect_true (have_monotonic))
1439	time_update_monotonic (EV_A);	1679	time_update (EV_A_ 1e100);
1440	else
1441	#endif
1442	{
1443	ev_rt_now = ev_time ();
1444	mn_now = ev_rt_now;
1445	}
1446		1680
1447	block = MAX_BLOCKTIME;	1681	waittime = MAX_BLOCKTIME;
1448		1682
1449	if (timercnt)	1683	if (timercnt)
1450	{	1684	{
1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1685	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1452	if (block > to) block = to;	1686	if (waittime > to) waittime = to;
1453	}	1687	}
1454		1688
1455	#if EV_PERIODIC_ENABLE	1689	#if EV_PERIODIC_ENABLE
1456	if (periodiccnt)	1690	if (periodiccnt)
1457	{	1691	{
1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1692	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1459	if (block > to) block = to;	1693	if (waittime > to) waittime = to;
1460	}	1694	}
1461	#endif	1695	#endif
1462		1696
1463	if (expect_false (block < 0.)) block = 0.;	1697	if (expect_false (waittime < timeout_blocktime))
		1698	waittime = timeout_blocktime;
		1699
		1700	sleeptime = waittime - backend_fudge;
		1701
		1702	if (expect_true (sleeptime > io_blocktime))
		1703	sleeptime = io_blocktime;
		1704
		1705	if (sleeptime)
		1706	{
		1707	ev_sleep (sleeptime);
		1708	waittime -= sleeptime;
		1709	}
1464	}	1710	}
1465		1711
1466	++loop_count;	1712	++loop_count;
1467	backend_poll (EV_A_ block);	1713	backend_poll (EV_A_ waittime);
		1714
		1715	/* update ev_rt_now, do magic */
		1716	time_update (EV_A_ waittime + sleeptime);
1468	}	1717	}
1469
1470	/* update ev_rt_now, do magic */
1471	time_update (EV_A);
1472		1718
1473	/* queue pending timers and reschedule them */	1719	/* queue pending timers and reschedule them */
1474	timers_reify (EV_A); /* relative timers called last */	1720	timers_reify (EV_A); /* relative timers called last */
1475	#if EV_PERIODIC_ENABLE	1721	#if EV_PERIODIC_ENABLE
1476	periodics_reify (EV_A); /* absolute timers called first */	1722	periodics_reify (EV_A); /* absolute timers called first */
…		…
1484	/* queue check watchers, to be executed first */	1730	/* queue check watchers, to be executed first */
1485	if (expect_false (checkcnt))	1731	if (expect_false (checkcnt))
1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1732	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1487		1733
1488	call_pending (EV_A);	1734	call_pending (EV_A);
1489
1490	}	1735	}
1491	while (expect_true (activecnt && !loop_done));	1736	while (expect_true (
		1737	activecnt
		1738	&& !loop_done
		1739	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1740	));
1492		1741
1493	if (loop_done == EVUNLOOP_ONE)	1742	if (loop_done == EVUNLOOP_ONE)
1494	loop_done = EVUNLOOP_CANCEL;	1743	loop_done = EVUNLOOP_CANCEL;
1495	}	1744	}
1496		1745
…		…
1523	head = &(*head)->next;	1772	head = &(*head)->next;
1524	}	1773	}
1525	}	1774	}
1526		1775
1527	void inline_speed	1776	void inline_speed
1528	ev_clear_pending (EV_P_ W w)	1777	clear_pending (EV_P_ W w)
1529	{	1778	{
1530	if (w->pending)	1779	if (w->pending)
1531	{	1780	{
1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1781	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1533	w->pending = 0;	1782	w->pending = 0;
1534	}	1783	}
		1784	}
		1785
		1786	int
		1787	ev_clear_pending (EV_P_ void *w)
		1788	{
		1789	W w_ = (W)w;
		1790	int pending = w_->pending;
		1791
		1792	if (expect_true (pending))
		1793	{
		1794	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1795	w_->pending = 0;
		1796	p->w = 0;
		1797	return p->events;
		1798	}
		1799	else
		1800	return 0;
1535	}	1801	}
1536		1802
1537	void inline_size	1803	void inline_size
1538	pri_adjust (EV_P_ W w)	1804	pri_adjust (EV_P_ W w)
1539	{	1805	{
…		…
1558	w->active = 0;	1824	w->active = 0;
1559	}	1825	}
1560		1826
1561	/*****************************************************************************/	1827	/*****************************************************************************/
1562		1828
1563	void	1829	void noinline
1564	ev_io_start (EV_P_ ev_io *w)	1830	ev_io_start (EV_P_ ev_io *w)
1565	{	1831	{
1566	int fd = w->fd;	1832	int fd = w->fd;
1567		1833
1568	if (expect_false (ev_is_active (w)))	1834	if (expect_false (ev_is_active (w)))
…		…
1570		1836
1571	assert (("ev_io_start called with negative fd", fd >= 0));	1837	assert (("ev_io_start called with negative fd", fd >= 0));
1572		1838
1573	ev_start (EV_A_ (W)w, 1);	1839	ev_start (EV_A_ (W)w, 1);
1574	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1840	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1575	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1841	wlist_add (&anfds[fd].head, (WL)w);
1576		1842
1577	fd_change (EV_A_ fd);	1843	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1844	w->events &= ~EV_IOFDSET;
1578	}	1845	}
1579		1846
1580	void	1847	void noinline
1581	ev_io_stop (EV_P_ ev_io *w)	1848	ev_io_stop (EV_P_ ev_io *w)
1582	{	1849	{
1583	ev_clear_pending (EV_A_ (W)w);	1850	clear_pending (EV_A_ (W)w);
1584	if (expect_false (!ev_is_active (w)))	1851	if (expect_false (!ev_is_active (w)))
1585	return;	1852	return;
1586		1853
1587	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1854	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1588		1855
1589	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1856	wlist_del (&anfds[w->fd].head, (WL)w);
1590	ev_stop (EV_A_ (W)w);	1857	ev_stop (EV_A_ (W)w);
1591		1858
1592	fd_change (EV_A_ w->fd);	1859	fd_change (EV_A_ w->fd, 1);
1593	}	1860	}
1594		1861
1595	void	1862	void noinline
1596	ev_timer_start (EV_P_ ev_timer *w)	1863	ev_timer_start (EV_P_ ev_timer *w)
1597	{	1864	{
1598	if (expect_false (ev_is_active (w)))	1865	if (expect_false (ev_is_active (w)))
1599	return;	1866	return;
1600		1867
1601	((WT)w)->at += mn_now;	1868	((WT)w)->at += mn_now;
1602		1869
1603	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1870	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1604		1871
1605	ev_start (EV_A_ (W)w, ++timercnt);	1872	ev_start (EV_A_ (W)w, ++timercnt);
1606	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1873	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1607	timers [timercnt - 1] = w;	1874	timers [timercnt - 1] = (WT)w;
1608	upheap ((WT *)timers, timercnt - 1);	1875	upheap (timers, timercnt - 1);
1609		1876
1610	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	1877	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1611	}	1878	}
1612		1879
1613	void	1880	void noinline
1614	ev_timer_stop (EV_P_ ev_timer *w)	1881	ev_timer_stop (EV_P_ ev_timer *w)
1615	{	1882	{
1616	ev_clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1617	if (expect_false (!ev_is_active (w)))	1884	if (expect_false (!ev_is_active (w)))
1618	return;	1885	return;
1619		1886
1620	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1887	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1621		1888
1622	{	1889	{
1623	int active = ((W)w)->active;	1890	int active = ((W)w)->active;
1624		1891
1625	if (expect_true (--active < --timercnt))	1892	if (expect_true (--active < --timercnt))
1626	{	1893	{
1627	timers [active] = timers [timercnt];	1894	timers [active] = timers [timercnt];
1628	adjustheap ((WT *)timers, timercnt, active);	1895	adjustheap (timers, timercnt, active);
1629	}	1896	}
1630	}	1897	}
1631		1898
1632	((WT)w)->at -= mn_now;	1899	((WT)w)->at -= mn_now;
1633		1900
1634	ev_stop (EV_A_ (W)w);	1901	ev_stop (EV_A_ (W)w);
1635	}	1902	}
1636		1903
1637	void	1904	void noinline
1638	ev_timer_again (EV_P_ ev_timer *w)	1905	ev_timer_again (EV_P_ ev_timer *w)
1639	{	1906	{
1640	if (ev_is_active (w))	1907	if (ev_is_active (w))
1641	{	1908	{
1642	if (w->repeat)	1909	if (w->repeat)
1643	{	1910	{
1644	((WT)w)->at = mn_now + w->repeat;	1911	((WT)w)->at = mn_now + w->repeat;
1645	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1912	adjustheap (timers, timercnt, ((W)w)->active - 1);
1646	}	1913	}
1647	else	1914	else
1648	ev_timer_stop (EV_A_ w);	1915	ev_timer_stop (EV_A_ w);
1649	}	1916	}
1650	else if (w->repeat)	1917	else if (w->repeat)
…		…
1653	ev_timer_start (EV_A_ w);	1920	ev_timer_start (EV_A_ w);
1654	}	1921	}
1655	}	1922	}
1656		1923
1657	#if EV_PERIODIC_ENABLE	1924	#if EV_PERIODIC_ENABLE
1658	void	1925	void noinline
1659	ev_periodic_start (EV_P_ ev_periodic *w)	1926	ev_periodic_start (EV_P_ ev_periodic *w)
1660	{	1927	{
1661	if (expect_false (ev_is_active (w)))	1928	if (expect_false (ev_is_active (w)))
1662	return;	1929	return;
1663		1930
…		…
1665	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1932	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1666	else if (w->interval)	1933	else if (w->interval)
1667	{	1934	{
1668	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1935	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1669	/* this formula differs from the one in periodic_reify because we do not always round up */	1936	/* this formula differs from the one in periodic_reify because we do not always round up */
1670	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1937	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1671	}	1938	}
		1939	else
		1940	((WT)w)->at = w->offset;
1672		1941
1673	ev_start (EV_A_ (W)w, ++periodiccnt);	1942	ev_start (EV_A_ (W)w, ++periodiccnt);
1674	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1943	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1675	periodics [periodiccnt - 1] = w;	1944	periodics [periodiccnt - 1] = (WT)w;
1676	upheap ((WT *)periodics, periodiccnt - 1);	1945	upheap (periodics, periodiccnt - 1);
1677		1946
1678	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	1947	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1679	}	1948	}
1680		1949
1681	void	1950	void noinline
1682	ev_periodic_stop (EV_P_ ev_periodic *w)	1951	ev_periodic_stop (EV_P_ ev_periodic *w)
1683	{	1952	{
1684	ev_clear_pending (EV_A_ (W)w);	1953	clear_pending (EV_A_ (W)w);
1685	if (expect_false (!ev_is_active (w)))	1954	if (expect_false (!ev_is_active (w)))
1686	return;	1955	return;
1687		1956
1688	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1957	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1689		1958
1690	{	1959	{
1691	int active = ((W)w)->active;	1960	int active = ((W)w)->active;
1692		1961
1693	if (expect_true (--active < --periodiccnt))	1962	if (expect_true (--active < --periodiccnt))
1694	{	1963	{
1695	periodics [active] = periodics [periodiccnt];	1964	periodics [active] = periodics [periodiccnt];
1696	adjustheap ((WT *)periodics, periodiccnt, active);	1965	adjustheap (periodics, periodiccnt, active);
1697	}	1966	}
1698	}	1967	}
1699		1968
1700	ev_stop (EV_A_ (W)w);	1969	ev_stop (EV_A_ (W)w);
1701	}	1970	}
1702		1971
1703	void	1972	void noinline
1704	ev_periodic_again (EV_P_ ev_periodic *w)	1973	ev_periodic_again (EV_P_ ev_periodic *w)
1705	{	1974	{
1706	/* TODO: use adjustheap and recalculation */	1975	/* TODO: use adjustheap and recalculation */
1707	ev_periodic_stop (EV_A_ w);	1976	ev_periodic_stop (EV_A_ w);
1708	ev_periodic_start (EV_A_ w);	1977	ev_periodic_start (EV_A_ w);
…		…
1711		1980
1712	#ifndef SA_RESTART	1981	#ifndef SA_RESTART
1713	# define SA_RESTART 0	1982	# define SA_RESTART 0
1714	#endif	1983	#endif
1715		1984
1716	void	1985	void noinline
1717	ev_signal_start (EV_P_ ev_signal *w)	1986	ev_signal_start (EV_P_ ev_signal *w)
1718	{	1987	{
1719	#if EV_MULTIPLICITY	1988	#if EV_MULTIPLICITY
1720	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1989	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1721	#endif	1990	#endif
1722	if (expect_false (ev_is_active (w)))	1991	if (expect_false (ev_is_active (w)))
1723	return;	1992	return;
1724		1993
1725	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1994	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1726		1995
		1996	evpipe_init (EV_A);
		1997
		1998	{
		1999	#ifndef _WIN32
		2000	sigset_t full, prev;
		2001	sigfillset (&full);
		2002	sigprocmask (SIG_SETMASK, &full, &prev);
		2003	#endif
		2004
		2005	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2006
		2007	#ifndef _WIN32
		2008	sigprocmask (SIG_SETMASK, &prev, 0);
		2009	#endif
		2010	}
		2011
1727	ev_start (EV_A_ (W)w, 1);	2012	ev_start (EV_A_ (W)w, 1);
1728	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1729	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2013	wlist_add (&signals [w->signum - 1].head, (WL)w);
1730		2014
1731	if (!((WL)w)->next)	2015	if (!((WL)w)->next)
1732	{	2016	{
1733	#if _WIN32	2017	#if _WIN32
1734	signal (w->signum, sighandler);	2018	signal (w->signum, ev_sighandler);
1735	#else	2019	#else
1736	struct sigaction sa;	2020	struct sigaction sa;
1737	sa.sa_handler = sighandler;	2021	sa.sa_handler = ev_sighandler;
1738	sigfillset (&sa.sa_mask);	2022	sigfillset (&sa.sa_mask);
1739	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2023	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1740	sigaction (w->signum, &sa, 0);	2024	sigaction (w->signum, &sa, 0);
1741	#endif	2025	#endif
1742	}	2026	}
1743	}	2027	}
1744		2028
1745	void	2029	void noinline
1746	ev_signal_stop (EV_P_ ev_signal *w)	2030	ev_signal_stop (EV_P_ ev_signal *w)
1747	{	2031	{
1748	ev_clear_pending (EV_A_ (W)w);	2032	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2033	if (expect_false (!ev_is_active (w)))
1750	return;	2034	return;
1751		2035
1752	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2036	wlist_del (&signals [w->signum - 1].head, (WL)w);
1753	ev_stop (EV_A_ (W)w);	2037	ev_stop (EV_A_ (W)w);
1754		2038
1755	if (!signals [w->signum - 1].head)	2039	if (!signals [w->signum - 1].head)
1756	signal (w->signum, SIG_DFL);	2040	signal (w->signum, SIG_DFL);
1757	}	2041	}
…		…
1764	#endif	2048	#endif
1765	if (expect_false (ev_is_active (w)))	2049	if (expect_false (ev_is_active (w)))
1766	return;	2050	return;
1767		2051
1768	ev_start (EV_A_ (W)w, 1);	2052	ev_start (EV_A_ (W)w, 1);
1769	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2053	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1770	}	2054	}
1771		2055
1772	void	2056	void
1773	ev_child_stop (EV_P_ ev_child *w)	2057	ev_child_stop (EV_P_ ev_child *w)
1774	{	2058	{
1775	ev_clear_pending (EV_A_ (W)w);	2059	clear_pending (EV_A_ (W)w);
1776	if (expect_false (!ev_is_active (w)))	2060	if (expect_false (!ev_is_active (w)))
1777	return;	2061	return;
1778		2062
1779	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2063	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1780	ev_stop (EV_A_ (W)w);	2064	ev_stop (EV_A_ (W)w);
1781	}	2065	}
1782		2066
1783	#if EV_STAT_ENABLE	2067	#if EV_STAT_ENABLE
1784		2068
…		…
2016	}	2300	}
2017		2301
2018	void	2302	void
2019	ev_stat_stop (EV_P_ ev_stat *w)	2303	ev_stat_stop (EV_P_ ev_stat *w)
2020	{	2304	{
2021	ev_clear_pending (EV_A_ (W)w);	2305	clear_pending (EV_A_ (W)w);
2022	if (expect_false (!ev_is_active (w)))	2306	if (expect_false (!ev_is_active (w)))
2023	return;	2307	return;
2024		2308
2025	#if EV_USE_INOTIFY	2309	#if EV_USE_INOTIFY
2026	infy_del (EV_A_ w);	2310	infy_del (EV_A_ w);
…		…
2052	}	2336	}
2053		2337
2054	void	2338	void
2055	ev_idle_stop (EV_P_ ev_idle *w)	2339	ev_idle_stop (EV_P_ ev_idle *w)
2056	{	2340	{
2057	ev_clear_pending (EV_A_ (W)w);	2341	clear_pending (EV_A_ (W)w);
2058	if (expect_false (!ev_is_active (w)))	2342	if (expect_false (!ev_is_active (w)))
2059	return;	2343	return;
2060		2344
2061	{	2345	{
2062	int active = ((W)w)->active;	2346	int active = ((W)w)->active;
…		…
2082	}	2366	}
2083		2367
2084	void	2368	void
2085	ev_prepare_stop (EV_P_ ev_prepare *w)	2369	ev_prepare_stop (EV_P_ ev_prepare *w)
2086	{	2370	{
2087	ev_clear_pending (EV_A_ (W)w);	2371	clear_pending (EV_A_ (W)w);
2088	if (expect_false (!ev_is_active (w)))	2372	if (expect_false (!ev_is_active (w)))
2089	return;	2373	return;
2090		2374
2091	{	2375	{
2092	int active = ((W)w)->active;	2376	int active = ((W)w)->active;
…		…
2109	}	2393	}
2110		2394
2111	void	2395	void
2112	ev_check_stop (EV_P_ ev_check *w)	2396	ev_check_stop (EV_P_ ev_check *w)
2113	{	2397	{
2114	ev_clear_pending (EV_A_ (W)w);	2398	clear_pending (EV_A_ (W)w);
2115	if (expect_false (!ev_is_active (w)))	2399	if (expect_false (!ev_is_active (w)))
2116	return;	2400	return;
2117		2401
2118	{	2402	{
2119	int active = ((W)w)->active;	2403	int active = ((W)w)->active;
…		…
2126		2410
2127	#if EV_EMBED_ENABLE	2411	#if EV_EMBED_ENABLE
2128	void noinline	2412	void noinline
2129	ev_embed_sweep (EV_P_ ev_embed *w)	2413	ev_embed_sweep (EV_P_ ev_embed *w)
2130	{	2414	{
2131	ev_loop (w->loop, EVLOOP_NONBLOCK);	2415	ev_loop (w->other, EVLOOP_NONBLOCK);
2132	}	2416	}
2133		2417
2134	static void	2418	static void
2135	embed_cb (EV_P_ ev_io *io, int revents)	2419	embed_io_cb (EV_P_ ev_io *io, int revents)
2136	{	2420	{
2137	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2421	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2138		2422
2139	if (ev_cb (w))	2423	if (ev_cb (w))
2140	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2424	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2141	else	2425	else
2142	ev_embed_sweep (loop, w);	2426	ev_loop (w->other, EVLOOP_NONBLOCK);
2143	}	2427	}
		2428
		2429	static void
		2430	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2431	{
		2432	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2433
		2434	{
		2435	struct ev_loop *loop = w->other;
		2436
		2437	while (fdchangecnt)
		2438	{
		2439	fd_reify (EV_A);
		2440	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2441	}
		2442	}
		2443	}
		2444
		2445	#if 0
		2446	static void
		2447	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2448	{
		2449	ev_idle_stop (EV_A_ idle);
		2450	}
		2451	#endif
2144		2452
2145	void	2453	void
2146	ev_embed_start (EV_P_ ev_embed *w)	2454	ev_embed_start (EV_P_ ev_embed *w)
2147	{	2455	{
2148	if (expect_false (ev_is_active (w)))	2456	if (expect_false (ev_is_active (w)))
2149	return;	2457	return;
2150		2458
2151	{	2459	{
2152	struct ev_loop *loop = w->loop;	2460	struct ev_loop *loop = w->other;
2153	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2461	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2154	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2462	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2155	}	2463	}
2156		2464
2157	ev_set_priority (&w->io, ev_priority (w));	2465	ev_set_priority (&w->io, ev_priority (w));
2158	ev_io_start (EV_A_ &w->io);	2466	ev_io_start (EV_A_ &w->io);
2159		2467
		2468	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2469	ev_set_priority (&w->prepare, EV_MINPRI);
		2470	ev_prepare_start (EV_A_ &w->prepare);
		2471
		2472	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2473
2160	ev_start (EV_A_ (W)w, 1);	2474	ev_start (EV_A_ (W)w, 1);
2161	}	2475	}
2162		2476
2163	void	2477	void
2164	ev_embed_stop (EV_P_ ev_embed *w)	2478	ev_embed_stop (EV_P_ ev_embed *w)
2165	{	2479	{
2166	ev_clear_pending (EV_A_ (W)w);	2480	clear_pending (EV_A_ (W)w);
2167	if (expect_false (!ev_is_active (w)))	2481	if (expect_false (!ev_is_active (w)))
2168	return;	2482	return;
2169		2483
2170	ev_io_stop (EV_A_ &w->io);	2484	ev_io_stop (EV_A_ &w->io);
		2485	ev_prepare_stop (EV_A_ &w->prepare);
2171		2486
2172	ev_stop (EV_A_ (W)w);	2487	ev_stop (EV_A_ (W)w);
2173	}	2488	}
2174	#endif	2489	#endif
2175		2490
…		…
2186	}	2501	}
2187		2502
2188	void	2503	void
2189	ev_fork_stop (EV_P_ ev_fork *w)	2504	ev_fork_stop (EV_P_ ev_fork *w)
2190	{	2505	{
2191	ev_clear_pending (EV_A_ (W)w);	2506	clear_pending (EV_A_ (W)w);
2192	if (expect_false (!ev_is_active (w)))	2507	if (expect_false (!ev_is_active (w)))
2193	return;	2508	return;
2194		2509
2195	{	2510	{
2196	int active = ((W)w)->active;	2511	int active = ((W)w)->active;
…		…
2200		2515
2201	ev_stop (EV_A_ (W)w);	2516	ev_stop (EV_A_ (W)w);
2202	}	2517	}
2203	#endif	2518	#endif
2204		2519
		2520	#if EV_ASYNC_ENABLE
		2521	void
		2522	ev_async_start (EV_P_ ev_async *w)
		2523	{
		2524	if (expect_false (ev_is_active (w)))
		2525	return;
		2526
		2527	evpipe_init (EV_A);
		2528
		2529	ev_start (EV_A_ (W)w, ++asynccnt);
		2530	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2531	asyncs [asynccnt - 1] = w;
		2532	}
		2533
		2534	void
		2535	ev_async_stop (EV_P_ ev_async *w)
		2536	{
		2537	clear_pending (EV_A_ (W)w);
		2538	if (expect_false (!ev_is_active (w)))
		2539	return;
		2540
		2541	{
		2542	int active = ((W)w)->active;
		2543	asyncs [active - 1] = asyncs [--asynccnt];
		2544	((W)asyncs [active - 1])->active = active;
		2545	}
		2546
		2547	ev_stop (EV_A_ (W)w);
		2548	}
		2549
		2550	void
		2551	ev_async_send (EV_P_ ev_async *w)
		2552	{
		2553	w->sent = 1;
		2554	evpipe_write (EV_A_ &gotasync);
		2555	}
		2556	#endif
		2557
2205	/*****************************************************************************/	2558	/*****************************************************************************/
2206		2559
2207	struct ev_once	2560	struct ev_once
2208	{	2561	{
2209	ev_io io;	2562	ev_io io;
…		…
2264	ev_timer_set (&once->to, timeout, 0.);	2617	ev_timer_set (&once->to, timeout, 0.);
2265	ev_timer_start (EV_A_ &once->to);	2618	ev_timer_start (EV_A_ &once->to);
2266	}	2619	}
2267	}	2620	}
2268		2621
		2622	#if EV_MULTIPLICITY
		2623	#include "ev_wrap.h"
		2624	#endif
		2625
2269	#ifdef __cplusplus	2626	#ifdef __cplusplus
2270	}	2627	}
2271	#endif	2628	#endif
2272		2629

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