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Comparing libev/ev.c (file contents):
Revision 1.168 by root, Sat Dec 8 14:12:07 2007 UTC vs.
Revision 1.234 by root, Tue May 6 23:42:16 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 && __GNUC__ < 2
		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	#define ev_active(w) ((W)(w))->active
		331	#define ev_at(w) ((WT)(w))->at
		332
		333	#if EV_USE_MONOTONIC
		334	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		335	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	336	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		337	#endif
256		338
257	#ifdef _WIN32	339	#ifdef _WIN32
258	# include "ev_win32.c"	340	# include "ev_win32.c"
259	#endif	341	#endif
260		342
…		…
281	perror (msg);	363	perror (msg);
282	abort ();	364	abort ();
283	}	365	}
284	}	366	}
285		367
		368	static void *
		369	ev_realloc_emul (void *ptr, long size)
		370	{
		371	/* some systems, notably openbsd and darwin, fail to properly
		372	* implement realloc (x, 0) (as required by both ansi c-98 and
		373	* the single unix specification, so work around them here.
		374	*/
		375
		376	if (size)
		377	return realloc (ptr, size);
		378
		379	free (ptr);
		380	return 0;
		381	}
		382
286	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287		384
288	void	385	void
289	ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
290	{	387	{
291	alloc = cb;	388	alloc = cb;
292	}	389	}
293		390
294	inline_speed void *	391	inline_speed void *
295	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
296	{	393	{
297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
298		395
299	if (!ptr && size)	396	if (!ptr && size)
300	{	397	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	399	abort ();
…		…
396	{	493	{
397	return ev_rt_now;	494	return ev_rt_now;
398	}	495	}
399	#endif	496	#endif
400		497
		498	void
		499	ev_sleep (ev_tstamp delay)
		500	{
		501	if (delay > 0.)
		502	{
		503	#if EV_USE_NANOSLEEP
		504	struct timespec ts;
		505
		506	ts.tv_sec = (time_t)delay;
		507	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		508
		509	nanosleep (&ts, 0);
		510	#elif defined(_WIN32)
		511	Sleep ((unsigned long)(delay * 1e3));
		512	#else
		513	struct timeval tv;
		514
		515	tv.tv_sec = (time_t)delay;
		516	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		517
		518	select (0, 0, 0, 0, &tv);
		519	#endif
		520	}
		521	}
		522
		523	/*****************************************************************************/
		524
		525	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		526
401	int inline_size	527	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	528	array_nextsize (int elem, int cur, int cnt)
403	{	529	{
404	int ncur = cur + 1;	530	int ncur = cur + 1;
405		531
406	do	532	do
407	ncur <<= 1;	533	ncur <<= 1;
408	while (cnt > ncur);	534	while (cnt > ncur);
409		535
410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	536	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411	if (elem * ncur > 4096)	537	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412	{	538	{
413	ncur *= elem;	539	ncur *= elem;
414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	540	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415	ncur = ncur - sizeof (void *) * 4;	541	ncur = ncur - sizeof (void *) * 4;
416	ncur /= elem;	542	ncur /= elem;
417	}	543	}
418		544
419	return ncur;	545	return ncur;
420	}	546	}
421		547
422	inline_speed void *	548	static noinline void *
423	array_realloc (int elem, void *base, int *cur, int cnt)	549	array_realloc (int elem, void *base, int *cur, int cnt)
424	{	550	{
425	*cur = array_nextsize (elem, *cur, cnt);	551	*cur = array_nextsize (elem, *cur, cnt);
426	return ev_realloc (base, elem * *cur);	552	return ev_realloc (base, elem * *cur);
427	}	553	}
…		…
452		578
453	void noinline	579	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	580	ev_feed_event (EV_P_ void *w, int revents)
455	{	581	{
456	W w_ = (W)w;	582	W w_ = (W)w;
		583	int pri = ABSPRI (w_);
457		584
458	if (expect_false (w_->pending))	585	if (expect_false (w_->pending))
		586	pendings [pri][w_->pending - 1].events |= revents;
		587	else
459	{	588	{
		589	w_->pending = ++pendingcnt [pri];
		590	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		591	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	592	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	593	}
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	}	594	}
469		595
470	void inline_size	596	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	597	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	598	{
473	int i;	599	int i;
474		600
475	for (i = 0; i < eventcnt; ++i)	601	for (i = 0; i < eventcnt; ++i)
…		…
522	{	648	{
523	int fd = fdchanges [i];	649	int fd = fdchanges [i];
524	ANFD *anfd = anfds + fd;	650	ANFD *anfd = anfds + fd;
525	ev_io *w;	651	ev_io *w;
526		652
527	int events = 0;	653	unsigned char events = 0;
528		654
529	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	655	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
530	events |= w->events;	656	events |= (unsigned char)w->events;
531		657
532	#if EV_SELECT_IS_WINSOCKET	658	#if EV_SELECT_IS_WINSOCKET
533	if (events)	659	if (events)
534	{	660	{
535	unsigned long argp;	661	unsigned long argp;
		662	#ifdef EV_FD_TO_WIN32_HANDLE
		663	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		664	#else
536	anfd->handle = _get_osfhandle (fd);	665	anfd->handle = _get_osfhandle (fd);
		666	#endif
537	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	667	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
538	}	668	}
539	#endif	669	#endif
540		670
		671	{
		672	unsigned char o_events = anfd->events;
		673	unsigned char o_reify = anfd->reify;
		674
541	anfd->reify = 0;	675	anfd->reify = 0;
542
543	backend_modify (EV_A_ fd, anfd->events, events);
544	anfd->events = events;	676	anfd->events = events;
		677
		678	if (o_events != events || o_reify & EV_IOFDSET)
		679	backend_modify (EV_A_ fd, o_events, events);
		680	}
545	}	681	}
546		682
547	fdchangecnt = 0;	683	fdchangecnt = 0;
548	}	684	}
549		685
550	void inline_size	686	void inline_size
551	fd_change (EV_P_ int fd)	687	fd_change (EV_P_ int fd, int flags)
552	{	688	{
553	if (expect_false (anfds [fd].reify))	689	unsigned char reify = anfds [fd].reify;
554	return;
555
556	anfds [fd].reify = 1;	690	anfds [fd].reify |= flags;
557		691
		692	if (expect_true (!reify))
		693	{
558	++fdchangecnt;	694	++fdchangecnt;
559	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	695	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
560	fdchanges [fdchangecnt - 1] = fd;	696	fdchanges [fdchangecnt - 1] = fd;
		697	}
561	}	698	}
562		699
563	void inline_speed	700	void inline_speed
564	fd_kill (EV_P_ int fd)	701	fd_kill (EV_P_ int fd)
565	{	702	{
…		…
616		753
617	for (fd = 0; fd < anfdmax; ++fd)	754	for (fd = 0; fd < anfdmax; ++fd)
618	if (anfds [fd].events)	755	if (anfds [fd].events)
619	{	756	{
620	anfds [fd].events = 0;	757	anfds [fd].events = 0;
621	fd_change (EV_A_ fd);	758	fd_change (EV_A_ fd, EV_IOFDSET | 1);
622	}	759	}
623	}	760	}
624		761
625	/*****************************************************************************/	762	/*****************************************************************************/
626		763
		764	/* towards the root */
627	void inline_speed	765	void inline_speed
628	upheap (WT *heap, int k)	766	upheap (WT *heap, int k)
629	{	767	{
630	WT w = heap [k];	768	WT w = heap [k];
631		769
632	while (k && heap [k >> 1]->at > w->at)	770	for (;;)
633	{	771	{
		772	int p = k >> 1;
		773
		774	/* maybe we could use a dummy element at heap [0]? */
		775	if (!p || heap [p]->at <= w->at)
		776	break;
		777
634	heap [k] = heap [k >> 1];	778	heap [k] = heap [p];
635	((W)heap [k])->active = k + 1;	779	ev_active (heap [k]) = k;
636	k >>= 1;	780	k = p;
637	}	781	}
638		782
639	heap [k] = w;	783	heap [k] = w;
640	((W)heap [k])->active = k + 1;	784	ev_active (heap [k]) = k;
641
642	}	785	}
643		786
		787	/* away from the root */
644	void inline_speed	788	void inline_speed
645	downheap (WT *heap, int N, int k)	789	downheap (WT *heap, int N, int k)
646	{	790	{
647	WT w = heap [k];	791	WT w = heap [k];
648		792
649	while (k < (N >> 1))	793	for (;;)
650	{	794	{
651	int j = k << 1;	795	int c = k << 1;
652		796
653	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	797	if (c > N)
654	++j;
655
656	if (w->at <= heap [j]->at)
657	break;	798	break;
658		799
		800	c += c < N && heap [c]->at > heap [c + 1]->at
		801	? 1 : 0;
		802
		803	if (w->at <= heap [c]->at)
		804	break;
		805
659	heap [k] = heap [j];	806	heap [k] = heap [c];
660	((W)heap [k])->active = k + 1;	807	ev_active (heap [k]) = k;
		808
661	k = j;	809	k = c;
662	}	810	}
663		811
664	heap [k] = w;	812	heap [k] = w;
665	((W)heap [k])->active = k + 1;	813	ev_active (heap [k]) = k;
666	}	814	}
667		815
668	void inline_size	816	void inline_size
669	adjustheap (WT *heap, int N, int k)	817	adjustheap (WT *heap, int N, int k)
670	{	818	{
…		…
675	/*****************************************************************************/	823	/*****************************************************************************/
676		824
677	typedef struct	825	typedef struct
678	{	826	{
679	WL head;	827	WL head;
680	sig_atomic_t volatile gotsig;	828	EV_ATOMIC_T gotsig;
681	} ANSIG;	829	} ANSIG;
682		830
683	static ANSIG *signals;	831	static ANSIG *signals;
684	static int signalmax;	832	static int signalmax;
685		833
686	static int sigpipe [2];	834	static EV_ATOMIC_T gotsig;
687	static sig_atomic_t volatile gotsig;
688	static ev_io sigev;
689		835
690	void inline_size	836	void inline_size
691	signals_init (ANSIG *base, int count)	837	signals_init (ANSIG *base, int count)
692	{	838	{
693	while (count--)	839	while (count--)
…		…
697		843
698	++base;	844	++base;
699	}	845	}
700	}	846	}
701		847
702	static void	848	/*****************************************************************************/
703	sighandler (int signum)
704	{
705	#if _WIN32
706	signal (signum, sighandler);
707	#endif
708		849
709	signals [signum - 1].gotsig = 1;
710
711	if (!gotsig)
712	{
713	int old_errno = errno;
714	gotsig = 1;
715	write (sigpipe [1], &signum, 1);
716	errno = old_errno;
717	}
718	}
719
720	void noinline
721	ev_feed_signal_event (EV_P_ int signum)
722	{
723	WL w;
724
725	#if EV_MULTIPLICITY
726	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
727	#endif
728
729	--signum;
730
731	if (signum < 0 || signum >= signalmax)
732	return;
733
734	signals [signum].gotsig = 0;
735
736	for (w = signals [signum].head; w; w = w->next)
737	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
738	}
739
740	static void
741	sigcb (EV_P_ ev_io *iow, int revents)
742	{
743	int signum;
744
745	read (sigpipe [0], &revents, 1);
746	gotsig = 0;
747
748	for (signum = signalmax; signum--; )
749	if (signals [signum].gotsig)
750	ev_feed_signal_event (EV_A_ signum + 1);
751	}
752
753	void inline_size	850	void inline_speed
754	fd_intern (int fd)	851	fd_intern (int fd)
755	{	852	{
756	#ifdef _WIN32	853	#ifdef _WIN32
757	int arg = 1;	854	int arg = 1;
758	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	855	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
761	fcntl (fd, F_SETFL, O_NONBLOCK);	858	fcntl (fd, F_SETFL, O_NONBLOCK);
762	#endif	859	#endif
763	}	860	}
764		861
765	static void noinline	862	static void noinline
766	siginit (EV_P)	863	evpipe_init (EV_P)
767	{	864	{
		865	if (!ev_is_active (&pipeev))
		866	{
		867	#if EV_USE_EVENTFD
		868	if ((evfd = eventfd (0, 0)) >= 0)
		869	{
		870	evpipe [0] = -1;
		871	fd_intern (evfd);
		872	ev_io_set (&pipeev, evfd, EV_READ);
		873	}
		874	else
		875	#endif
		876	{
		877	while (pipe (evpipe))
		878	syserr ("(libev) error creating signal/async pipe");
		879
768	fd_intern (sigpipe [0]);	880	fd_intern (evpipe [0]);
769	fd_intern (sigpipe [1]);	881	fd_intern (evpipe [1]);
		882	ev_io_set (&pipeev, evpipe [0], EV_READ);
		883	}
770		884
771	ev_io_set (&sigev, sigpipe [0], EV_READ);
772	ev_io_start (EV_A_ &sigev);	885	ev_io_start (EV_A_ &pipeev);
773	ev_unref (EV_A); /* child watcher should not keep loop alive */	886	ev_unref (EV_A); /* watcher should not keep loop alive */
		887	}
		888	}
		889
		890	void inline_size
		891	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		892	{
		893	if (!*flag)
		894	{
		895	int old_errno = errno; /* save errno because write might clobber it */
		896
		897	*flag = 1;
		898
		899	#if EV_USE_EVENTFD
		900	if (evfd >= 0)
		901	{
		902	uint64_t counter = 1;
		903	write (evfd, &counter, sizeof (uint64_t));
		904	}
		905	else
		906	#endif
		907	write (evpipe [1], &old_errno, 1);
		908
		909	errno = old_errno;
		910	}
		911	}
		912
		913	static void
		914	pipecb (EV_P_ ev_io *iow, int revents)
		915	{
		916	#if EV_USE_EVENTFD
		917	if (evfd >= 0)
		918	{
		919	uint64_t counter;
		920	read (evfd, &counter, sizeof (uint64_t));
		921	}
		922	else
		923	#endif
		924	{
		925	char dummy;
		926	read (evpipe [0], &dummy, 1);
		927	}
		928
		929	if (gotsig && ev_is_default_loop (EV_A))
		930	{
		931	int signum;
		932	gotsig = 0;
		933
		934	for (signum = signalmax; signum--; )
		935	if (signals [signum].gotsig)
		936	ev_feed_signal_event (EV_A_ signum + 1);
		937	}
		938
		939	#if EV_ASYNC_ENABLE
		940	if (gotasync)
		941	{
		942	int i;
		943	gotasync = 0;
		944
		945	for (i = asynccnt; i--; )
		946	if (asyncs [i]->sent)
		947	{
		948	asyncs [i]->sent = 0;
		949	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		950	}
		951	}
		952	#endif
774	}	953	}
775		954
776	/*****************************************************************************/	955	/*****************************************************************************/
777		956
		957	static void
		958	ev_sighandler (int signum)
		959	{
		960	#if EV_MULTIPLICITY
		961	struct ev_loop *loop = &default_loop_struct;
		962	#endif
		963
		964	#if _WIN32
		965	signal (signum, ev_sighandler);
		966	#endif
		967
		968	signals [signum - 1].gotsig = 1;
		969	evpipe_write (EV_A_ &gotsig);
		970	}
		971
		972	void noinline
		973	ev_feed_signal_event (EV_P_ int signum)
		974	{
		975	WL w;
		976
		977	#if EV_MULTIPLICITY
		978	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		979	#endif
		980
		981	--signum;
		982
		983	if (signum < 0 || signum >= signalmax)
		984	return;
		985
		986	signals [signum].gotsig = 0;
		987
		988	for (w = signals [signum].head; w; w = w->next)
		989	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		990	}
		991
		992	/*****************************************************************************/
		993
778	static ev_child *childs [EV_PID_HASHSIZE];	994	static WL childs [EV_PID_HASHSIZE];
779		995
780	#ifndef _WIN32	996	#ifndef _WIN32
781		997
782	static ev_signal childev;	998	static ev_signal childev;
783		999
		1000	#ifndef WIFCONTINUED
		1001	# define WIFCONTINUED(status) 0
		1002	#endif
		1003
784	void inline_speed	1004	void inline_speed
785	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1005	child_reap (EV_P_ int chain, int pid, int status)
786	{	1006	{
787	ev_child *w;	1007	ev_child *w;
		1008	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
788		1009
789	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1010	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1011	{
790	if (w->pid == pid || !w->pid)	1012	if ((w->pid == pid || !w->pid)
		1013	&& (!traced || (w->flags & 1)))
791	{	1014	{
792	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1015	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
793	w->rpid = pid;	1016	w->rpid = pid;
794	w->rstatus = status;	1017	w->rstatus = status;
795	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1018	ev_feed_event (EV_A_ (W)w, EV_CHILD);
796	}	1019	}
		1020	}
797	}	1021	}
798		1022
799	#ifndef WCONTINUED	1023	#ifndef WCONTINUED
800	# define WCONTINUED 0	1024	# define WCONTINUED 0
801	#endif	1025	#endif
…		…
810	if (!WCONTINUED	1034	if (!WCONTINUED
811	|| errno != EINVAL	1035	|| errno != EINVAL
812	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1036	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
813	return;	1037	return;
814		1038
815	/* make sure we are called again until all childs have been reaped */	1039	/* make sure we are called again until all children have been reaped */
816	/* we need to do it this way so that the callback gets called before we continue */	1040	/* we need to do it this way so that the callback gets called before we continue */
817	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1041	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
818		1042
819	child_reap (EV_A_ sw, pid, pid, status);	1043	child_reap (EV_A_ pid, pid, status);
820	if (EV_PID_HASHSIZE > 1)	1044	if (EV_PID_HASHSIZE > 1)
821	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1045	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
822	}	1046	}
823		1047
824	#endif	1048	#endif
825		1049
826	/*****************************************************************************/	1050	/*****************************************************************************/
…		…
898	}	1122	}
899		1123
900	unsigned int	1124	unsigned int
901	ev_embeddable_backends (void)	1125	ev_embeddable_backends (void)
902	{	1126	{
903	return EVBACKEND_EPOLL	1127	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
904	| EVBACKEND_KQUEUE	1128
905	| EVBACKEND_PORT;	1129	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1130	/* please fix it and tell me how to detect the fix */
		1131	flags &= ~EVBACKEND_EPOLL;
		1132
		1133	return flags;
906	}	1134	}
907		1135
908	unsigned int	1136	unsigned int
909	ev_backend (EV_P)	1137	ev_backend (EV_P)
910	{	1138	{
…		…
913		1141
914	unsigned int	1142	unsigned int
915	ev_loop_count (EV_P)	1143	ev_loop_count (EV_P)
916	{	1144	{
917	return loop_count;	1145	return loop_count;
		1146	}
		1147
		1148	void
		1149	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1150	{
		1151	io_blocktime = interval;
		1152	}
		1153
		1154	void
		1155	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1156	{
		1157	timeout_blocktime = interval;
918	}	1158	}
919		1159
920	static void noinline	1160	static void noinline
921	loop_init (EV_P_ unsigned int flags)	1161	loop_init (EV_P_ unsigned int flags)
922	{	1162	{
…		…
928	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1168	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
929	have_monotonic = 1;	1169	have_monotonic = 1;
930	}	1170	}
931	#endif	1171	#endif
932		1172
933	ev_rt_now = ev_time ();	1173	ev_rt_now = ev_time ();
934	mn_now = get_clock ();	1174	mn_now = get_clock ();
935	now_floor = mn_now;	1175	now_floor = mn_now;
936	rtmn_diff = ev_rt_now - mn_now;	1176	rtmn_diff = ev_rt_now - mn_now;
		1177
		1178	io_blocktime = 0.;
		1179	timeout_blocktime = 0.;
		1180	backend = 0;
		1181	backend_fd = -1;
		1182	gotasync = 0;
		1183	#if EV_USE_INOTIFY
		1184	fs_fd = -2;
		1185	#endif
937		1186
938	/* pid check not overridable via env */	1187	/* pid check not overridable via env */
939	#ifndef _WIN32	1188	#ifndef _WIN32
940	if (flags & EVFLAG_FORKCHECK)	1189	if (flags & EVFLAG_FORKCHECK)
941	curpid = getpid ();	1190	curpid = getpid ();
…		…
944	if (!(flags & EVFLAG_NOENV)	1193	if (!(flags & EVFLAG_NOENV)
945	&& !enable_secure ()	1194	&& !enable_secure ()
946	&& getenv ("LIBEV_FLAGS"))	1195	&& getenv ("LIBEV_FLAGS"))
947	flags = atoi (getenv ("LIBEV_FLAGS"));	1196	flags = atoi (getenv ("LIBEV_FLAGS"));
948		1197
949	if (!(flags & 0x0000ffffUL))	1198	if (!(flags & 0x0000ffffU))
950	flags |= ev_recommended_backends ();	1199	flags |= ev_recommended_backends ();
951
952	backend = 0;
953	backend_fd = -1;
954	#if EV_USE_INOTIFY
955	fs_fd = -2;
956	#endif
957		1200
958	#if EV_USE_PORT	1201	#if EV_USE_PORT
959	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1202	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
960	#endif	1203	#endif
961	#if EV_USE_KQUEUE	1204	#if EV_USE_KQUEUE
…		…
969	#endif	1212	#endif
970	#if EV_USE_SELECT	1213	#if EV_USE_SELECT
971	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1214	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
972	#endif	1215	#endif
973		1216
974	ev_init (&sigev, sigcb);	1217	ev_init (&pipeev, pipecb);
975	ev_set_priority (&sigev, EV_MAXPRI);	1218	ev_set_priority (&pipeev, EV_MAXPRI);
976	}	1219	}
977	}	1220	}
978		1221
979	static void noinline	1222	static void noinline
980	loop_destroy (EV_P)	1223	loop_destroy (EV_P)
981	{	1224	{
982	int i;	1225	int i;
		1226
		1227	if (ev_is_active (&pipeev))
		1228	{
		1229	ev_ref (EV_A); /* signal watcher */
		1230	ev_io_stop (EV_A_ &pipeev);
		1231
		1232	#if EV_USE_EVENTFD
		1233	if (evfd >= 0)
		1234	close (evfd);
		1235	#endif
		1236
		1237	if (evpipe [0] >= 0)
		1238	{
		1239	close (evpipe [0]);
		1240	close (evpipe [1]);
		1241	}
		1242	}
983		1243
984	#if EV_USE_INOTIFY	1244	#if EV_USE_INOTIFY
985	if (fs_fd >= 0)	1245	if (fs_fd >= 0)
986	close (fs_fd);	1246	close (fs_fd);
987	#endif	1247	#endif
…		…
1010	array_free (pending, [i]);	1270	array_free (pending, [i]);
1011	#if EV_IDLE_ENABLE	1271	#if EV_IDLE_ENABLE
1012	array_free (idle, [i]);	1272	array_free (idle, [i]);
1013	#endif	1273	#endif
1014	}	1274	}
		1275
		1276	ev_free (anfds); anfdmax = 0;
1015		1277
1016	/* have to use the microsoft-never-gets-it-right macro */	1278	/* have to use the microsoft-never-gets-it-right macro */
1017	array_free (fdchange, EMPTY);	1279	array_free (fdchange, EMPTY);
1018	array_free (timer, EMPTY);	1280	array_free (timer, EMPTY);
1019	#if EV_PERIODIC_ENABLE	1281	#if EV_PERIODIC_ENABLE
1020	array_free (periodic, EMPTY);	1282	array_free (periodic, EMPTY);
1021	#endif	1283	#endif
		1284	#if EV_FORK_ENABLE
		1285	array_free (fork, EMPTY);
		1286	#endif
1022	array_free (prepare, EMPTY);	1287	array_free (prepare, EMPTY);
1023	array_free (check, EMPTY);	1288	array_free (check, EMPTY);
		1289	#if EV_ASYNC_ENABLE
		1290	array_free (async, EMPTY);
		1291	#endif
1024		1292
1025	backend = 0;	1293	backend = 0;
1026	}	1294	}
1027		1295
		1296	#if EV_USE_INOTIFY
1028	void inline_size infy_fork (EV_P);	1297	void inline_size infy_fork (EV_P);
		1298	#endif
1029		1299
1030	void inline_size	1300	void inline_size
1031	loop_fork (EV_P)	1301	loop_fork (EV_P)
1032	{	1302	{
1033	#if EV_USE_PORT	1303	#if EV_USE_PORT
…		…
1041	#endif	1311	#endif
1042	#if EV_USE_INOTIFY	1312	#if EV_USE_INOTIFY
1043	infy_fork (EV_A);	1313	infy_fork (EV_A);
1044	#endif	1314	#endif
1045		1315
1046	if (ev_is_active (&sigev))	1316	if (ev_is_active (&pipeev))
1047	{	1317	{
1048	/* default loop */	1318	/* this "locks" the handlers against writing to the pipe */
		1319	/* while we modify the fd vars */
		1320	gotsig = 1;
		1321	#if EV_ASYNC_ENABLE
		1322	gotasync = 1;
		1323	#endif
1049		1324
1050	ev_ref (EV_A);	1325	ev_ref (EV_A);
1051	ev_io_stop (EV_A_ &sigev);	1326	ev_io_stop (EV_A_ &pipeev);
		1327
		1328	#if EV_USE_EVENTFD
		1329	if (evfd >= 0)
		1330	close (evfd);
		1331	#endif
		1332
		1333	if (evpipe [0] >= 0)
		1334	{
1052	close (sigpipe [0]);	1335	close (evpipe [0]);
1053	close (sigpipe [1]);	1336	close (evpipe [1]);
		1337	}
1054		1338
1055	while (pipe (sigpipe))
1056	syserr ("(libev) error creating pipe");
1057
1058	siginit (EV_A);	1339	evpipe_init (EV_A);
		1340	/* now iterate over everything, in case we missed something */
		1341	pipecb (EV_A_ &pipeev, EV_READ);
1059	}	1342	}
1060		1343
1061	postfork = 0;	1344	postfork = 0;
1062	}	1345	}
1063		1346
…		…
1085	}	1368	}
1086		1369
1087	void	1370	void
1088	ev_loop_fork (EV_P)	1371	ev_loop_fork (EV_P)
1089	{	1372	{
1090	postfork = 1;	1373	postfork = 1; /* must be in line with ev_default_fork */
1091	}	1374	}
1092
1093	#endif	1375	#endif
1094		1376
1095	#if EV_MULTIPLICITY	1377	#if EV_MULTIPLICITY
1096	struct ev_loop *	1378	struct ev_loop *
1097	ev_default_loop_init (unsigned int flags)	1379	ev_default_loop_init (unsigned int flags)
1098	#else	1380	#else
1099	int	1381	int
1100	ev_default_loop (unsigned int flags)	1382	ev_default_loop (unsigned int flags)
1101	#endif	1383	#endif
1102	{	1384	{
1103	if (sigpipe [0] == sigpipe [1])
1104	if (pipe (sigpipe))
1105	return 0;
1106
1107	if (!ev_default_loop_ptr)	1385	if (!ev_default_loop_ptr)
1108	{	1386	{
1109	#if EV_MULTIPLICITY	1387	#if EV_MULTIPLICITY
1110	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1388	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1111	#else	1389	#else
…		…
1114		1392
1115	loop_init (EV_A_ flags);	1393	loop_init (EV_A_ flags);
1116		1394
1117	if (ev_backend (EV_A))	1395	if (ev_backend (EV_A))
1118	{	1396	{
1119	siginit (EV_A);
1120
1121	#ifndef _WIN32	1397	#ifndef _WIN32
1122	ev_signal_init (&childev, childcb, SIGCHLD);	1398	ev_signal_init (&childev, childcb, SIGCHLD);
1123	ev_set_priority (&childev, EV_MAXPRI);	1399	ev_set_priority (&childev, EV_MAXPRI);
1124	ev_signal_start (EV_A_ &childev);	1400	ev_signal_start (EV_A_ &childev);
1125	ev_unref (EV_A); /* child watcher should not keep loop alive */	1401	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1142	#ifndef _WIN32	1418	#ifndef _WIN32
1143	ev_ref (EV_A); /* child watcher */	1419	ev_ref (EV_A); /* child watcher */
1144	ev_signal_stop (EV_A_ &childev);	1420	ev_signal_stop (EV_A_ &childev);
1145	#endif	1421	#endif
1146		1422
1147	ev_ref (EV_A); /* signal watcher */
1148	ev_io_stop (EV_A_ &sigev);
1149
1150	close (sigpipe [0]); sigpipe [0] = 0;
1151	close (sigpipe [1]); sigpipe [1] = 0;
1152
1153	loop_destroy (EV_A);	1423	loop_destroy (EV_A);
1154	}	1424	}
1155		1425
1156	void	1426	void
1157	ev_default_fork (void)	1427	ev_default_fork (void)
…		…
1159	#if EV_MULTIPLICITY	1429	#if EV_MULTIPLICITY
1160	struct ev_loop *loop = ev_default_loop_ptr;	1430	struct ev_loop *loop = ev_default_loop_ptr;
1161	#endif	1431	#endif
1162		1432
1163	if (backend)	1433	if (backend)
1164	postfork = 1;	1434	postfork = 1; /* must be in line with ev_loop_fork */
1165	}	1435	}
1166		1436
1167	/*****************************************************************************/	1437	/*****************************************************************************/
1168		1438
1169	void	1439	void
…		…
1189	p->w->pending = 0;	1459	p->w->pending = 0;
1190	EV_CB_INVOKE (p->w, p->events);	1460	EV_CB_INVOKE (p->w, p->events);
1191	}	1461	}
1192	}	1462	}
1193	}	1463	}
1194
1195	void inline_size
1196	timers_reify (EV_P)
1197	{
1198	while (timercnt && ((WT)timers [0])->at <= mn_now)
1199	{
1200	ev_timer *w = timers [0];
1201
1202	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1203
1204	/* first reschedule or stop timer */
1205	if (w->repeat)
1206	{
1207	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1208
1209	((WT)w)->at += w->repeat;
1210	if (((WT)w)->at < mn_now)
1211	((WT)w)->at = mn_now;
1212
1213	downheap ((WT *)timers, timercnt, 0);
1214	}
1215	else
1216	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1217
1218	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1219	}
1220	}
1221
1222	#if EV_PERIODIC_ENABLE
1223	void inline_size
1224	periodics_reify (EV_P)
1225	{
1226	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1227	{
1228	ev_periodic *w = periodics [0];
1229
1230	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1231
1232	/* first reschedule or stop timer */
1233	if (w->reschedule_cb)
1234	{
1235	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1236	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1237	downheap ((WT *)periodics, periodiccnt, 0);
1238	}
1239	else if (w->interval)
1240	{
1241	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1242	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1243	downheap ((WT *)periodics, periodiccnt, 0);
1244	}
1245	else
1246	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1247
1248	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1249	}
1250	}
1251
1252	static void noinline
1253	periodics_reschedule (EV_P)
1254	{
1255	int i;
1256
1257	/* adjust periodics after time jump */
1258	for (i = 0; i < periodiccnt; ++i)
1259	{
1260	ev_periodic *w = periodics [i];
1261
1262	if (w->reschedule_cb)
1263	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1264	else if (w->interval)
1265	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1266	}
1267
1268	/* now rebuild the heap */
1269	for (i = periodiccnt >> 1; i--; )
1270	downheap ((WT *)periodics, periodiccnt, i);
1271	}
1272	#endif
1273		1464
1274	#if EV_IDLE_ENABLE	1465	#if EV_IDLE_ENABLE
1275	void inline_size	1466	void inline_size
1276	idle_reify (EV_P)	1467	idle_reify (EV_P)
1277	{	1468	{
…		…
1292	}	1483	}
1293	}	1484	}
1294	}	1485	}
1295	#endif	1486	#endif
1296		1487
1297	int inline_size	1488	void inline_size
1298	time_update_monotonic (EV_P)	1489	timers_reify (EV_P)
1299	{	1490	{
		1491	while (timercnt && ev_at (timers [1]) <= mn_now)
		1492	{
		1493	ev_timer *w = (ev_timer *)timers [1];
		1494
		1495	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1496
		1497	/* first reschedule or stop timer */
		1498	if (w->repeat)
		1499	{
		1500	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1501
		1502	ev_at (w) += w->repeat;
		1503	if (ev_at (w) < mn_now)
		1504	ev_at (w) = mn_now;
		1505
		1506	downheap (timers, timercnt, 1);
		1507	}
		1508	else
		1509	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1510
		1511	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1512	}
		1513	}
		1514
		1515	#if EV_PERIODIC_ENABLE
		1516	void inline_size
		1517	periodics_reify (EV_P)
		1518	{
		1519	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
		1520	{
		1521	ev_periodic *w = (ev_periodic *)periodics [1];
		1522
		1523	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1524
		1525	/* first reschedule or stop timer */
		1526	if (w->reschedule_cb)
		1527	{
		1528	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1529	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1530	downheap (periodics, periodiccnt, 1);
		1531	}
		1532	else if (w->interval)
		1533	{
		1534	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1535	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1536	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1537	downheap (periodics, periodiccnt, 1);
		1538	}
		1539	else
		1540	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1541
		1542	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1543	}
		1544	}
		1545
		1546	static void noinline
		1547	periodics_reschedule (EV_P)
		1548	{
		1549	int i;
		1550
		1551	/* adjust periodics after time jump */
		1552	for (i = 1; i <= periodiccnt; ++i)
		1553	{
		1554	ev_periodic *w = (ev_periodic *)periodics [i];
		1555
		1556	if (w->reschedule_cb)
		1557	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1558	else if (w->interval)
		1559	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1560	}
		1561
		1562	/* now rebuild the heap */
		1563	for (i = periodiccnt >> 1; i--; )
		1564	downheap (periodics, periodiccnt, i);
		1565	}
		1566	#endif
		1567
		1568	void inline_speed
		1569	time_update (EV_P_ ev_tstamp max_block)
		1570	{
		1571	int i;
		1572
		1573	#if EV_USE_MONOTONIC
		1574	if (expect_true (have_monotonic))
		1575	{
		1576	ev_tstamp odiff = rtmn_diff;
		1577
1300	mn_now = get_clock ();	1578	mn_now = get_clock ();
1301		1579
		1580	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1581	/* interpolate in the meantime */
1302	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1582	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1303	{	1583	{
1304	ev_rt_now = rtmn_diff + mn_now;	1584	ev_rt_now = rtmn_diff + mn_now;
1305	return 0;	1585	return;
1306	}	1586	}
1307	else	1587
1308	{
1309	now_floor = mn_now;	1588	now_floor = mn_now;
1310	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1311	return 1;
1312	}
1313	}
1314		1590
1315	void inline_size	1591	/* loop a few times, before making important decisions.
1316	time_update (EV_P)	1592	* on the choice of "4": one iteration isn't enough,
1317	{	1593	* in case we get preempted during the calls to
1318	int i;	1594	* ev_time and get_clock. a second call is almost guaranteed
1319		1595	* to succeed in that case, though. and looping a few more times
1320	#if EV_USE_MONOTONIC	1596	* doesn't hurt either as we only do this on time-jumps or
1321	if (expect_true (have_monotonic))	1597	* in the unlikely event of having been preempted here.
1322	{	1598	*/
1323	if (time_update_monotonic (EV_A))	1599	for (i = 4; --i; )
1324	{	1600	{
1325	ev_tstamp odiff = rtmn_diff;
1326
1327	/* loop a few times, before making important decisions.
1328	* on the choice of "4": one iteration isn't enough,
1329	* in case we get preempted during the calls to
1330	* ev_time and get_clock. a second call is almost guaranteed
1331	* to succeed in that case, though. and looping a few more times
1332	* doesn't hurt either as we only do this on time-jumps or
1333	* in the unlikely event of having been preempted here.
1334	*/
1335	for (i = 4; --i; )
1336	{
1337	rtmn_diff = ev_rt_now - mn_now;	1601	rtmn_diff = ev_rt_now - mn_now;
1338		1602
1339	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1603	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1340	return; /* all is well */	1604	return; /* all is well */
1341		1605
1342	ev_rt_now = ev_time ();	1606	ev_rt_now = ev_time ();
1343	mn_now = get_clock ();	1607	mn_now = get_clock ();
1344	now_floor = mn_now;	1608	now_floor = mn_now;
1345	}	1609	}
1346		1610
1347	# if EV_PERIODIC_ENABLE	1611	# if EV_PERIODIC_ENABLE
1348	periodics_reschedule (EV_A);	1612	periodics_reschedule (EV_A);
1349	# endif	1613	# endif
1350	/* no timer adjustment, as the monotonic clock doesn't jump */	1614	/* no timer adjustment, as the monotonic clock doesn't jump */
1351	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1615	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1352	}
1353	}	1616	}
1354	else	1617	else
1355	#endif	1618	#endif
1356	{	1619	{
1357	ev_rt_now = ev_time ();	1620	ev_rt_now = ev_time ();
1358		1621
1359	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1622	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1360	{	1623	{
1361	#if EV_PERIODIC_ENABLE	1624	#if EV_PERIODIC_ENABLE
1362	periodics_reschedule (EV_A);	1625	periodics_reschedule (EV_A);
1363	#endif	1626	#endif
1364
1365	/* adjust timers. this is easy, as the offset is the same for all of them */	1627	/* adjust timers. this is easy, as the offset is the same for all of them */
1366	for (i = 0; i < timercnt; ++i)	1628	for (i = 1; i <= timercnt; ++i)
1367	((WT)timers [i])->at += ev_rt_now - mn_now;	1629	ev_at (timers [i]) += ev_rt_now - mn_now;
1368	}	1630	}
1369		1631
1370	mn_now = ev_rt_now;	1632	mn_now = ev_rt_now;
1371	}	1633	}
1372	}	1634	}
…		…
1386	static int loop_done;	1648	static int loop_done;
1387		1649
1388	void	1650	void
1389	ev_loop (EV_P_ int flags)	1651	ev_loop (EV_P_ int flags)
1390	{	1652	{
1391	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1653	loop_done = EVUNLOOP_CANCEL;
1392	? EVUNLOOP_ONE
1393	: EVUNLOOP_CANCEL;
1394		1654
1395	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1655	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1396		1656
1397	do	1657	do
1398	{	1658	{
…		…
1413	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1673	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1414	call_pending (EV_A);	1674	call_pending (EV_A);
1415	}	1675	}
1416	#endif	1676	#endif
1417		1677
1418	/* queue check watchers (and execute them) */	1678	/* queue prepare watchers (and execute them) */
1419	if (expect_false (preparecnt))	1679	if (expect_false (preparecnt))
1420	{	1680	{
1421	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1681	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1422	call_pending (EV_A);	1682	call_pending (EV_A);
1423	}	1683	}
…		…
1432	/* update fd-related kernel structures */	1692	/* update fd-related kernel structures */
1433	fd_reify (EV_A);	1693	fd_reify (EV_A);
1434		1694
1435	/* calculate blocking time */	1695	/* calculate blocking time */
1436	{	1696	{
1437	ev_tstamp block;	1697	ev_tstamp waittime = 0.;
		1698	ev_tstamp sleeptime = 0.;
1438		1699
1439	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1700	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1440	block = 0.; /* do not block at all */
1441	else
1442	{	1701	{
1443	/* update time to cancel out callback processing overhead */	1702	/* update time to cancel out callback processing overhead */
1444	#if EV_USE_MONOTONIC
1445	if (expect_true (have_monotonic))
1446	time_update_monotonic (EV_A);	1703	time_update (EV_A_ 1e100);
1447	else
1448	#endif
1449	{
1450	ev_rt_now = ev_time ();
1451	mn_now = ev_rt_now;
1452	}
1453		1704
1454	block = MAX_BLOCKTIME;	1705	waittime = MAX_BLOCKTIME;
1455		1706
1456	if (timercnt)	1707	if (timercnt)
1457	{	1708	{
1458	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1709	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1459	if (block > to) block = to;	1710	if (waittime > to) waittime = to;
1460	}	1711	}
1461		1712
1462	#if EV_PERIODIC_ENABLE	1713	#if EV_PERIODIC_ENABLE
1463	if (periodiccnt)	1714	if (periodiccnt)
1464	{	1715	{
1465	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1716	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1466	if (block > to) block = to;	1717	if (waittime > to) waittime = to;
1467	}	1718	}
1468	#endif	1719	#endif
1469		1720
1470	if (expect_false (block < 0.)) block = 0.;	1721	if (expect_false (waittime < timeout_blocktime))
		1722	waittime = timeout_blocktime;
		1723
		1724	sleeptime = waittime - backend_fudge;
		1725
		1726	if (expect_true (sleeptime > io_blocktime))
		1727	sleeptime = io_blocktime;
		1728
		1729	if (sleeptime)
		1730	{
		1731	ev_sleep (sleeptime);
		1732	waittime -= sleeptime;
		1733	}
1471	}	1734	}
1472		1735
1473	++loop_count;	1736	++loop_count;
1474	backend_poll (EV_A_ block);	1737	backend_poll (EV_A_ waittime);
		1738
		1739	/* update ev_rt_now, do magic */
		1740	time_update (EV_A_ waittime + sleeptime);
1475	}	1741	}
1476
1477	/* update ev_rt_now, do magic */
1478	time_update (EV_A);
1479		1742
1480	/* queue pending timers and reschedule them */	1743	/* queue pending timers and reschedule them */
1481	timers_reify (EV_A); /* relative timers called last */	1744	timers_reify (EV_A); /* relative timers called last */
1482	#if EV_PERIODIC_ENABLE	1745	#if EV_PERIODIC_ENABLE
1483	periodics_reify (EV_A); /* absolute timers called first */	1746	periodics_reify (EV_A); /* absolute timers called first */
…		…
1491	/* queue check watchers, to be executed first */	1754	/* queue check watchers, to be executed first */
1492	if (expect_false (checkcnt))	1755	if (expect_false (checkcnt))
1493	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1756	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1494		1757
1495	call_pending (EV_A);	1758	call_pending (EV_A);
1496
1497	}	1759	}
1498	while (expect_true (activecnt && !loop_done));	1760	while (expect_true (
		1761	activecnt
		1762	&& !loop_done
		1763	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1764	));
1499		1765
1500	if (loop_done == EVUNLOOP_ONE)	1766	if (loop_done == EVUNLOOP_ONE)
1501	loop_done = EVUNLOOP_CANCEL;	1767	loop_done = EVUNLOOP_CANCEL;
1502	}	1768	}
1503		1769
…		…
1545	ev_clear_pending (EV_P_ void *w)	1811	ev_clear_pending (EV_P_ void *w)
1546	{	1812	{
1547	W w_ = (W)w;	1813	W w_ = (W)w;
1548	int pending = w_->pending;	1814	int pending = w_->pending;
1549		1815
1550	if (!pending)	1816	if (expect_true (pending))
		1817	{
		1818	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1819	w_->pending = 0;
		1820	p->w = 0;
		1821	return p->events;
		1822	}
		1823	else
1551	return 0;	1824	return 0;
1552
1553	w_->pending = 0;
1554	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1555	p->w = 0;
1556
1557	return p->events;
1558	}	1825	}
1559		1826
1560	void inline_size	1827	void inline_size
1561	pri_adjust (EV_P_ W w)	1828	pri_adjust (EV_P_ W w)
1562	{	1829	{
…		…
1581	w->active = 0;	1848	w->active = 0;
1582	}	1849	}
1583		1850
1584	/*****************************************************************************/	1851	/*****************************************************************************/
1585		1852
1586	void	1853	void noinline
1587	ev_io_start (EV_P_ ev_io *w)	1854	ev_io_start (EV_P_ ev_io *w)
1588	{	1855	{
1589	int fd = w->fd;	1856	int fd = w->fd;
1590		1857
1591	if (expect_false (ev_is_active (w)))	1858	if (expect_false (ev_is_active (w)))
…		…
1593		1860
1594	assert (("ev_io_start called with negative fd", fd >= 0));	1861	assert (("ev_io_start called with negative fd", fd >= 0));
1595		1862
1596	ev_start (EV_A_ (W)w, 1);	1863	ev_start (EV_A_ (W)w, 1);
1597	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1864	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1598	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1865	wlist_add (&anfds[fd].head, (WL)w);
1599		1866
1600	fd_change (EV_A_ fd);	1867	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1868	w->events &= ~EV_IOFDSET;
1601	}	1869	}
1602		1870
1603	void	1871	void noinline
1604	ev_io_stop (EV_P_ ev_io *w)	1872	ev_io_stop (EV_P_ ev_io *w)
1605	{	1873	{
1606	clear_pending (EV_A_ (W)w);	1874	clear_pending (EV_A_ (W)w);
1607	if (expect_false (!ev_is_active (w)))	1875	if (expect_false (!ev_is_active (w)))
1608	return;	1876	return;
1609		1877
1610	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1878	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1611		1879
1612	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1880	wlist_del (&anfds[w->fd].head, (WL)w);
1613	ev_stop (EV_A_ (W)w);	1881	ev_stop (EV_A_ (W)w);
1614		1882
1615	fd_change (EV_A_ w->fd);	1883	fd_change (EV_A_ w->fd, 1);
1616	}	1884	}
1617		1885
1618	void	1886	void noinline
1619	ev_timer_start (EV_P_ ev_timer *w)	1887	ev_timer_start (EV_P_ ev_timer *w)
1620	{	1888	{
1621	if (expect_false (ev_is_active (w)))	1889	if (expect_false (ev_is_active (w)))
1622	return;	1890	return;
1623		1891
1624	((WT)w)->at += mn_now;	1892	ev_at (w) += mn_now;
1625		1893
1626	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1894	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1627		1895
1628	ev_start (EV_A_ (W)w, ++timercnt);	1896	ev_start (EV_A_ (W)w, ++timercnt);
1629	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1897	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1630	timers [timercnt - 1] = w;	1898	timers [timercnt] = (WT)w;
1631	upheap ((WT *)timers, timercnt - 1);	1899	upheap (timers, timercnt);
1632		1900
1633	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	1901	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1634	}	1902	}
1635		1903
1636	void	1904	void noinline
1637	ev_timer_stop (EV_P_ ev_timer *w)	1905	ev_timer_stop (EV_P_ ev_timer *w)
1638	{	1906	{
1639	clear_pending (EV_A_ (W)w);	1907	clear_pending (EV_A_ (W)w);
1640	if (expect_false (!ev_is_active (w)))	1908	if (expect_false (!ev_is_active (w)))
1641	return;	1909	return;
1642		1910
1643	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1644
1645	{	1911	{
1646	int active = ((W)w)->active;	1912	int active = ev_active (w);
1647		1913
		1914	assert (("internal timer heap corruption", timers [active] == (WT)w));
		1915
1648	if (expect_true (--active < --timercnt))	1916	if (expect_true (active < timercnt))
1649	{	1917	{
1650	timers [active] = timers [timercnt];	1918	timers [active] = timers [timercnt];
1651	adjustheap ((WT *)timers, timercnt, active);	1919	adjustheap (timers, timercnt, active);
1652	}	1920	}
		1921
		1922	--timercnt;
1653	}	1923	}
1654		1924
1655	((WT)w)->at -= mn_now;	1925	ev_at (w) -= mn_now;
1656		1926
1657	ev_stop (EV_A_ (W)w);	1927	ev_stop (EV_A_ (W)w);
1658	}	1928	}
1659		1929
1660	void	1930	void noinline
1661	ev_timer_again (EV_P_ ev_timer *w)	1931	ev_timer_again (EV_P_ ev_timer *w)
1662	{	1932	{
1663	if (ev_is_active (w))	1933	if (ev_is_active (w))
1664	{	1934	{
1665	if (w->repeat)	1935	if (w->repeat)
1666	{	1936	{
1667	((WT)w)->at = mn_now + w->repeat;	1937	ev_at (w) = mn_now + w->repeat;
1668	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1938	adjustheap (timers, timercnt, ev_active (w));
1669	}	1939	}
1670	else	1940	else
1671	ev_timer_stop (EV_A_ w);	1941	ev_timer_stop (EV_A_ w);
1672	}	1942	}
1673	else if (w->repeat)	1943	else if (w->repeat)
1674	{	1944	{
1675	w->at = w->repeat;	1945	ev_at (w) = w->repeat;
1676	ev_timer_start (EV_A_ w);	1946	ev_timer_start (EV_A_ w);
1677	}	1947	}
1678	}	1948	}
1679		1949
1680	#if EV_PERIODIC_ENABLE	1950	#if EV_PERIODIC_ENABLE
1681	void	1951	void noinline
1682	ev_periodic_start (EV_P_ ev_periodic *w)	1952	ev_periodic_start (EV_P_ ev_periodic *w)
1683	{	1953	{
1684	if (expect_false (ev_is_active (w)))	1954	if (expect_false (ev_is_active (w)))
1685	return;	1955	return;
1686		1956
1687	if (w->reschedule_cb)	1957	if (w->reschedule_cb)
1688	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1958	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1689	else if (w->interval)	1959	else if (w->interval)
1690	{	1960	{
1691	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1692	/* this formula differs from the one in periodic_reify because we do not always round up */	1962	/* this formula differs from the one in periodic_reify because we do not always round up */
1693	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1963	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1694	}	1964	}
		1965	else
		1966	ev_at (w) = w->offset;
1695		1967
1696	ev_start (EV_A_ (W)w, ++periodiccnt);	1968	ev_start (EV_A_ (W)w, ++periodiccnt);
1697	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1969	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1698	periodics [periodiccnt - 1] = w;	1970	periodics [periodiccnt] = (WT)w;
1699	upheap ((WT *)periodics, periodiccnt - 1);	1971	upheap (periodics, periodiccnt);
1700		1972
1701	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	1973	/*assert (("internal periodic heap corruption", periodics [ev_active (w)] == w));*/
1702	}	1974	}
1703		1975
1704	void	1976	void noinline
1705	ev_periodic_stop (EV_P_ ev_periodic *w)	1977	ev_periodic_stop (EV_P_ ev_periodic *w)
1706	{	1978	{
1707	clear_pending (EV_A_ (W)w);	1979	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	1980	if (expect_false (!ev_is_active (w)))
1709	return;	1981	return;
1710		1982
1711	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1712
1713	{	1983	{
1714	int active = ((W)w)->active;	1984	int active = ev_active (w);
1715		1985
		1986	assert (("internal periodic heap corruption", periodics [active] == (WT)w));
		1987
1716	if (expect_true (--active < --periodiccnt))	1988	if (expect_true (active < periodiccnt))
1717	{	1989	{
1718	periodics [active] = periodics [periodiccnt];	1990	periodics [active] = periodics [periodiccnt];
1719	adjustheap ((WT *)periodics, periodiccnt, active);	1991	adjustheap (periodics, periodiccnt, active);
1720	}	1992	}
		1993
		1994	--periodiccnt;
1721	}	1995	}
1722		1996
1723	ev_stop (EV_A_ (W)w);	1997	ev_stop (EV_A_ (W)w);
1724	}	1998	}
1725		1999
1726	void	2000	void noinline
1727	ev_periodic_again (EV_P_ ev_periodic *w)	2001	ev_periodic_again (EV_P_ ev_periodic *w)
1728	{	2002	{
1729	/* TODO: use adjustheap and recalculation */	2003	/* TODO: use adjustheap and recalculation */
1730	ev_periodic_stop (EV_A_ w);	2004	ev_periodic_stop (EV_A_ w);
1731	ev_periodic_start (EV_A_ w);	2005	ev_periodic_start (EV_A_ w);
…		…
1734		2008
1735	#ifndef SA_RESTART	2009	#ifndef SA_RESTART
1736	# define SA_RESTART 0	2010	# define SA_RESTART 0
1737	#endif	2011	#endif
1738		2012
1739	void	2013	void noinline
1740	ev_signal_start (EV_P_ ev_signal *w)	2014	ev_signal_start (EV_P_ ev_signal *w)
1741	{	2015	{
1742	#if EV_MULTIPLICITY	2016	#if EV_MULTIPLICITY
1743	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2017	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1744	#endif	2018	#endif
1745	if (expect_false (ev_is_active (w)))	2019	if (expect_false (ev_is_active (w)))
1746	return;	2020	return;
1747		2021
1748	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2022	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1749		2023
		2024	evpipe_init (EV_A);
		2025
		2026	{
		2027	#ifndef _WIN32
		2028	sigset_t full, prev;
		2029	sigfillset (&full);
		2030	sigprocmask (SIG_SETMASK, &full, &prev);
		2031	#endif
		2032
		2033	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2034
		2035	#ifndef _WIN32
		2036	sigprocmask (SIG_SETMASK, &prev, 0);
		2037	#endif
		2038	}
		2039
1750	ev_start (EV_A_ (W)w, 1);	2040	ev_start (EV_A_ (W)w, 1);
1751	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1752	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2041	wlist_add (&signals [w->signum - 1].head, (WL)w);
1753		2042
1754	if (!((WL)w)->next)	2043	if (!((WL)w)->next)
1755	{	2044	{
1756	#if _WIN32	2045	#if _WIN32
1757	signal (w->signum, sighandler);	2046	signal (w->signum, ev_sighandler);
1758	#else	2047	#else
1759	struct sigaction sa;	2048	struct sigaction sa;
1760	sa.sa_handler = sighandler;	2049	sa.sa_handler = ev_sighandler;
1761	sigfillset (&sa.sa_mask);	2050	sigfillset (&sa.sa_mask);
1762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2051	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1763	sigaction (w->signum, &sa, 0);	2052	sigaction (w->signum, &sa, 0);
1764	#endif	2053	#endif
1765	}	2054	}
1766	}	2055	}
1767		2056
1768	void	2057	void noinline
1769	ev_signal_stop (EV_P_ ev_signal *w)	2058	ev_signal_stop (EV_P_ ev_signal *w)
1770	{	2059	{
1771	clear_pending (EV_A_ (W)w);	2060	clear_pending (EV_A_ (W)w);
1772	if (expect_false (!ev_is_active (w)))	2061	if (expect_false (!ev_is_active (w)))
1773	return;	2062	return;
1774		2063
1775	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2064	wlist_del (&signals [w->signum - 1].head, (WL)w);
1776	ev_stop (EV_A_ (W)w);	2065	ev_stop (EV_A_ (W)w);
1777		2066
1778	if (!signals [w->signum - 1].head)	2067	if (!signals [w->signum - 1].head)
1779	signal (w->signum, SIG_DFL);	2068	signal (w->signum, SIG_DFL);
1780	}	2069	}
…		…
1787	#endif	2076	#endif
1788	if (expect_false (ev_is_active (w)))	2077	if (expect_false (ev_is_active (w)))
1789	return;	2078	return;
1790		2079
1791	ev_start (EV_A_ (W)w, 1);	2080	ev_start (EV_A_ (W)w, 1);
1792	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2081	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1793	}	2082	}
1794		2083
1795	void	2084	void
1796	ev_child_stop (EV_P_ ev_child *w)	2085	ev_child_stop (EV_P_ ev_child *w)
1797	{	2086	{
1798	clear_pending (EV_A_ (W)w);	2087	clear_pending (EV_A_ (W)w);
1799	if (expect_false (!ev_is_active (w)))	2088	if (expect_false (!ev_is_active (w)))
1800	return;	2089	return;
1801		2090
1802	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2091	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1803	ev_stop (EV_A_ (W)w);	2092	ev_stop (EV_A_ (W)w);
1804	}	2093	}
1805		2094
1806	#if EV_STAT_ENABLE	2095	#if EV_STAT_ENABLE
1807		2096
…		…
1826	if (w->wd < 0)	2115	if (w->wd < 0)
1827	{	2116	{
1828	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2117	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1829		2118
1830	/* monitor some parent directory for speedup hints */	2119	/* monitor some parent directory for speedup hints */
		2120	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2121	/* but an efficiency issue only */
1831	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2122	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1832	{	2123	{
1833	char path [4096];	2124	char path [4096];
1834	strcpy (path, w->path);	2125	strcpy (path, w->path);
1835		2126
…		…
2080	clear_pending (EV_A_ (W)w);	2371	clear_pending (EV_A_ (W)w);
2081	if (expect_false (!ev_is_active (w)))	2372	if (expect_false (!ev_is_active (w)))
2082	return;	2373	return;
2083		2374
2084	{	2375	{
2085	int active = ((W)w)->active;	2376	int active = ev_active (w);
2086		2377
2087	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2378	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2088	((W)idles [ABSPRI (w)][active - 1])->active = active;	2379	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2089		2380
2090	ev_stop (EV_A_ (W)w);	2381	ev_stop (EV_A_ (W)w);
2091	--idleall;	2382	--idleall;
2092	}	2383	}
2093	}	2384	}
…		…
2110	clear_pending (EV_A_ (W)w);	2401	clear_pending (EV_A_ (W)w);
2111	if (expect_false (!ev_is_active (w)))	2402	if (expect_false (!ev_is_active (w)))
2112	return;	2403	return;
2113		2404
2114	{	2405	{
2115	int active = ((W)w)->active;	2406	int active = ev_active (w);
		2407
2116	prepares [active - 1] = prepares [--preparecnt];	2408	prepares [active - 1] = prepares [--preparecnt];
2117	((W)prepares [active - 1])->active = active;	2409	ev_active (prepares [active - 1]) = active;
2118	}	2410	}
2119		2411
2120	ev_stop (EV_A_ (W)w);	2412	ev_stop (EV_A_ (W)w);
2121	}	2413	}
2122		2414
…		…
2137	clear_pending (EV_A_ (W)w);	2429	clear_pending (EV_A_ (W)w);
2138	if (expect_false (!ev_is_active (w)))	2430	if (expect_false (!ev_is_active (w)))
2139	return;	2431	return;
2140		2432
2141	{	2433	{
2142	int active = ((W)w)->active;	2434	int active = ev_active (w);
		2435
2143	checks [active - 1] = checks [--checkcnt];	2436	checks [active - 1] = checks [--checkcnt];
2144	((W)checks [active - 1])->active = active;	2437	ev_active (checks [active - 1]) = active;
2145	}	2438	}
2146		2439
2147	ev_stop (EV_A_ (W)w);	2440	ev_stop (EV_A_ (W)w);
2148	}	2441	}
2149		2442
2150	#if EV_EMBED_ENABLE	2443	#if EV_EMBED_ENABLE
2151	void noinline	2444	void noinline
2152	ev_embed_sweep (EV_P_ ev_embed *w)	2445	ev_embed_sweep (EV_P_ ev_embed *w)
2153	{	2446	{
2154	ev_loop (w->loop, EVLOOP_NONBLOCK);	2447	ev_loop (w->other, EVLOOP_NONBLOCK);
2155	}	2448	}
2156		2449
2157	static void	2450	static void
2158	embed_cb (EV_P_ ev_io *io, int revents)	2451	embed_io_cb (EV_P_ ev_io *io, int revents)
2159	{	2452	{
2160	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2453	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2161		2454
2162	if (ev_cb (w))	2455	if (ev_cb (w))
2163	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2456	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2164	else	2457	else
2165	ev_embed_sweep (loop, w);	2458	ev_loop (w->other, EVLOOP_NONBLOCK);
2166	}	2459	}
		2460
		2461	static void
		2462	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2463	{
		2464	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2465
		2466	{
		2467	struct ev_loop *loop = w->other;
		2468
		2469	while (fdchangecnt)
		2470	{
		2471	fd_reify (EV_A);
		2472	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2473	}
		2474	}
		2475	}
		2476
		2477	#if 0
		2478	static void
		2479	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2480	{
		2481	ev_idle_stop (EV_A_ idle);
		2482	}
		2483	#endif
2167		2484
2168	void	2485	void
2169	ev_embed_start (EV_P_ ev_embed *w)	2486	ev_embed_start (EV_P_ ev_embed *w)
2170	{	2487	{
2171	if (expect_false (ev_is_active (w)))	2488	if (expect_false (ev_is_active (w)))
2172	return;	2489	return;
2173		2490
2174	{	2491	{
2175	struct ev_loop *loop = w->loop;	2492	struct ev_loop *loop = w->other;
2176	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2493	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2177	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2494	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2178	}	2495	}
2179		2496
2180	ev_set_priority (&w->io, ev_priority (w));	2497	ev_set_priority (&w->io, ev_priority (w));
2181	ev_io_start (EV_A_ &w->io);	2498	ev_io_start (EV_A_ &w->io);
2182		2499
		2500	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2501	ev_set_priority (&w->prepare, EV_MINPRI);
		2502	ev_prepare_start (EV_A_ &w->prepare);
		2503
		2504	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2505
2183	ev_start (EV_A_ (W)w, 1);	2506	ev_start (EV_A_ (W)w, 1);
2184	}	2507	}
2185		2508
2186	void	2509	void
2187	ev_embed_stop (EV_P_ ev_embed *w)	2510	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2189	clear_pending (EV_A_ (W)w);	2512	clear_pending (EV_A_ (W)w);
2190	if (expect_false (!ev_is_active (w)))	2513	if (expect_false (!ev_is_active (w)))
2191	return;	2514	return;
2192		2515
2193	ev_io_stop (EV_A_ &w->io);	2516	ev_io_stop (EV_A_ &w->io);
		2517	ev_prepare_stop (EV_A_ &w->prepare);
2194		2518
2195	ev_stop (EV_A_ (W)w);	2519	ev_stop (EV_A_ (W)w);
2196	}	2520	}
2197	#endif	2521	#endif
2198		2522
…		…
2214	clear_pending (EV_A_ (W)w);	2538	clear_pending (EV_A_ (W)w);
2215	if (expect_false (!ev_is_active (w)))	2539	if (expect_false (!ev_is_active (w)))
2216	return;	2540	return;
2217		2541
2218	{	2542	{
2219	int active = ((W)w)->active;	2543	int active = ev_active (w);
		2544
2220	forks [active - 1] = forks [--forkcnt];	2545	forks [active - 1] = forks [--forkcnt];
2221	((W)forks [active - 1])->active = active;	2546	ev_active (forks [active - 1]) = active;
2222	}	2547	}
2223		2548
2224	ev_stop (EV_A_ (W)w);	2549	ev_stop (EV_A_ (W)w);
		2550	}
		2551	#endif
		2552
		2553	#if EV_ASYNC_ENABLE
		2554	void
		2555	ev_async_start (EV_P_ ev_async *w)
		2556	{
		2557	if (expect_false (ev_is_active (w)))
		2558	return;
		2559
		2560	evpipe_init (EV_A);
		2561
		2562	ev_start (EV_A_ (W)w, ++asynccnt);
		2563	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2564	asyncs [asynccnt - 1] = w;
		2565	}
		2566
		2567	void
		2568	ev_async_stop (EV_P_ ev_async *w)
		2569	{
		2570	clear_pending (EV_A_ (W)w);
		2571	if (expect_false (!ev_is_active (w)))
		2572	return;
		2573
		2574	{
		2575	int active = ev_active (w);
		2576
		2577	asyncs [active - 1] = asyncs [--asynccnt];
		2578	ev_active (asyncs [active - 1]) = active;
		2579	}
		2580
		2581	ev_stop (EV_A_ (W)w);
		2582	}
		2583
		2584	void
		2585	ev_async_send (EV_P_ ev_async *w)
		2586	{
		2587	w->sent = 1;
		2588	evpipe_write (EV_A_ &gotasync);
2225	}	2589	}
2226	#endif	2590	#endif
2227		2591
2228	/*****************************************************************************/	2592	/*****************************************************************************/
2229		2593
…		…
2287	ev_timer_set (&once->to, timeout, 0.);	2651	ev_timer_set (&once->to, timeout, 0.);
2288	ev_timer_start (EV_A_ &once->to);	2652	ev_timer_start (EV_A_ &once->to);
2289	}	2653	}
2290	}	2654	}
2291		2655
		2656	#if EV_MULTIPLICITY
		2657	#include "ev_wrap.h"
		2658	#endif
		2659
2292	#ifdef __cplusplus	2660	#ifdef __cplusplus
2293	}	2661	}
2294	#endif	2662	#endif
2295		2663

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