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Comparing libev/ev.c (file contents):
Revision 1.183 by root, Wed Dec 12 05:11:56 2007 UTC vs.
Revision 1.241 by root, Fri May 9 13:57:00 2008 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	#ifdef __cplusplus
33	extern "C" {	41	extern "C" {
34	#endif	42	#endif
35		43
		44	/* this big block deduces configuration from config.h */
36	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	46	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	47	# include EV_CONFIG_H
39	# else	48	# else
40	# include "config.h"	49	# include "config.h"
…		…
51	# ifndef EV_USE_MONOTONIC	60	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	61	# define EV_USE_MONOTONIC 0
53	# endif	62	# endif
54	# ifndef EV_USE_REALTIME	63	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	64	# define EV_USE_REALTIME 0
		65	# endif
		66	# endif
		67
		68	# ifndef EV_USE_NANOSLEEP
		69	# if HAVE_NANOSLEEP
		70	# define EV_USE_NANOSLEEP 1
		71	# else
		72	# define EV_USE_NANOSLEEP 0
56	# endif	73	# endif
57	# endif	74	# endif
58		75
59	# ifndef EV_USE_SELECT	76	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	77	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
102	# else	119	# else
103	# define EV_USE_INOTIFY 0	120	# define EV_USE_INOTIFY 0
104	# endif	121	# endif
105	# endif	122	# endif
106		123
		124	# ifndef EV_USE_EVENTFD
		125	# if HAVE_EVENTFD
		126	# define EV_USE_EVENTFD 1
		127	# else
		128	# define EV_USE_EVENTFD 0
		129	# endif
		130	# endif
		131
107	#endif	132	#endif
108		133
109	#include <math.h>	134	#include <math.h>
110	#include <stdlib.h>	135	#include <stdlib.h>
111	#include <fcntl.h>	136	#include <fcntl.h>
…		…
136	# ifndef EV_SELECT_IS_WINSOCKET	161	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	162	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	163	# endif
139	#endif	164	#endif
140		165
141	/**/	166	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		167
143	#ifndef EV_USE_MONOTONIC	168	#ifndef EV_USE_MONOTONIC
144	# define EV_USE_MONOTONIC 0	169	# define EV_USE_MONOTONIC 0
145	#endif	170	#endif
146		171
147	#ifndef EV_USE_REALTIME	172	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	173	# define EV_USE_REALTIME 0
		174	#endif
		175
		176	#ifndef EV_USE_NANOSLEEP
		177	# define EV_USE_NANOSLEEP 0
149	#endif	178	#endif
150		179
151	#ifndef EV_USE_SELECT	180	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	181	# define EV_USE_SELECT 1
153	#endif	182	#endif
…		…
159	# define EV_USE_POLL 1	188	# define EV_USE_POLL 1
160	# endif	189	# endif
161	#endif	190	#endif
162		191
163	#ifndef EV_USE_EPOLL	192	#ifndef EV_USE_EPOLL
		193	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		194	# define EV_USE_EPOLL 1
		195	# else
164	# define EV_USE_EPOLL 0	196	# define EV_USE_EPOLL 0
		197	# endif
165	#endif	198	#endif
166		199
167	#ifndef EV_USE_KQUEUE	200	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	201	# define EV_USE_KQUEUE 0
169	#endif	202	#endif
…		…
171	#ifndef EV_USE_PORT	204	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	205	# define EV_USE_PORT 0
173	#endif	206	#endif
174		207
175	#ifndef EV_USE_INOTIFY	208	#ifndef EV_USE_INOTIFY
		209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		210	# define EV_USE_INOTIFY 1
		211	# else
176	# define EV_USE_INOTIFY 0	212	# define EV_USE_INOTIFY 0
		213	# endif
177	#endif	214	#endif
178		215
179	#ifndef EV_PID_HASHSIZE	216	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	217	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	218	# define EV_PID_HASHSIZE 1
…		…
190	# else	227	# else
191	# define EV_INOTIFY_HASHSIZE 16	228	# define EV_INOTIFY_HASHSIZE 16
192	# endif	229	# endif
193	#endif	230	#endif
194		231
195	/**/	232	#ifndef EV_USE_EVENTFD
		233	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		234	# define EV_USE_EVENTFD 1
		235	# else
		236	# define EV_USE_EVENTFD 0
		237	# endif
		238	#endif
		239
		240	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		241
197	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
200	#endif	245	#endif
…		…
202	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
205	#endif	250	#endif
206		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
207	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	268	# include <winsock.h>
209	#endif	269	#endif
210		270
211	#if !EV_STAT_ENABLE	271	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
213	#endif	276	# endif
214		277	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	278	# ifdef __cplusplus
216	# include <sys/inotify.h>	279	}
		280	# endif
217	#endif	281	#endif
218		282
219	/**/	283	/**/
220		284
221	/*	285	/*
…		…
230		294
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	296	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		298
235	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	301	# define noinline __attribute__ ((noinline))
238	#else	302	#else
239	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
240	# define noinline	304	# define noinline
241	# if __STDC_VERSION__ < 199901L	305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	306	# define inline
243	# endif	307	# endif
244	#endif	308	#endif
245		309
246	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
261		325
262	typedef ev_watcher *W;	326	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
265		329
		330	#define ev_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 */
266	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
267		338
268	#ifdef _WIN32	339	#ifdef _WIN32
269	# include "ev_win32.c"	340	# include "ev_win32.c"
270	#endif	341	#endif
271		342
…		…
292	perror (msg);	363	perror (msg);
293	abort ();	364	abort ();
294	}	365	}
295	}	366	}
296		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
297	static void *(*alloc)(void *ptr, long size);	383	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		384
299	void	385	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	386	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	387	{
302	alloc = cb;	388	alloc = cb;
303	}	389	}
304		390
305	inline_speed void *	391	inline_speed void *
306	ev_realloc (void *ptr, long size)	392	ev_realloc (void *ptr, long size)
307	{	393	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	394	ptr = alloc (ptr, size);
309		395
310	if (!ptr && size)	396	if (!ptr && size)
311	{	397	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	398	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	399	abort ();
…		…
336	W w;	422	W w;
337	int events;	423	int events;
338	} ANPENDING;	424	} ANPENDING;
339		425
340	#if EV_USE_INOTIFY	426	#if EV_USE_INOTIFY
		427	/* hash table entry per inotify-id */
341	typedef struct	428	typedef struct
342	{	429	{
343	WL head;	430	WL head;
344	} ANFS;	431	} ANFS;
		432	#endif
		433
		434	/* Heap Entry */
		435	#if EV_HEAP_CACHE_AT
		436	typedef struct {
		437	WT w;
		438	ev_tstamp at;
		439	} ANHE;
		440
		441	#define ANHE_w(he) (he) /* access watcher, read-write */
		442	#define ANHE_at(he) (he)->at /* acces cahced at, read-only */
		443	#define ANHE_at_set(he) (he)->at = (he)->w->at /* update at from watcher */
		444	#else
		445	typedef WT ANHE;
		446
		447	#define ANHE_w(he) (he)
		448	#define ANHE_at(he) (he)->at
		449	#define ANHE_at_set(he)
345	#endif	450	#endif
346		451
347	#if EV_MULTIPLICITY	452	#if EV_MULTIPLICITY
348		453
349	struct ev_loop	454	struct ev_loop
…		…
407	{	512	{
408	return ev_rt_now;	513	return ev_rt_now;
409	}	514	}
410	#endif	515	#endif
411		516
		517	void
		518	ev_sleep (ev_tstamp delay)
		519	{
		520	if (delay > 0.)
		521	{
		522	#if EV_USE_NANOSLEEP
		523	struct timespec ts;
		524
		525	ts.tv_sec = (time_t)delay;
		526	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		527
		528	nanosleep (&ts, 0);
		529	#elif defined(_WIN32)
		530	Sleep ((unsigned long)(delay * 1e3));
		531	#else
		532	struct timeval tv;
		533
		534	tv.tv_sec = (time_t)delay;
		535	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		536
		537	select (0, 0, 0, 0, &tv);
		538	#endif
		539	}
		540	}
		541
		542	/*****************************************************************************/
		543
		544	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		545
412	int inline_size	546	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	547	array_nextsize (int elem, int cur, int cnt)
414	{	548	{
415	int ncur = cur + 1;	549	int ncur = cur + 1;
416		550
417	do	551	do
418	ncur <<= 1;	552	ncur <<= 1;
419	while (cnt > ncur);	553	while (cnt > ncur);
420		554
421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	555	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422	if (elem * ncur > 4096)	556	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	557	{
424	ncur *= elem;	558	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	559	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	560	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	561	ncur /= elem;
428	}	562	}
429		563
430	return ncur;	564	return ncur;
…		…
533	{	667	{
534	int fd = fdchanges [i];	668	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	669	ANFD *anfd = anfds + fd;
536	ev_io *w;	670	ev_io *w;
537		671
538	int events = 0;	672	unsigned char events = 0;
539		673
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	674	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	675	events |= (unsigned char)w->events;
542		676
543	#if EV_SELECT_IS_WINSOCKET	677	#if EV_SELECT_IS_WINSOCKET
544	if (events)	678	if (events)
545	{	679	{
546	unsigned long argp;	680	unsigned long argp;
		681	#ifdef EV_FD_TO_WIN32_HANDLE
		682	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		683	#else
547	anfd->handle = _get_osfhandle (fd);	684	anfd->handle = _get_osfhandle (fd);
		685	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	686	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	687	}
550	#endif	688	#endif
551		689
		690	{
		691	unsigned char o_events = anfd->events;
		692	unsigned char o_reify = anfd->reify;
		693
552	anfd->reify = 0;	694	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	695	anfd->events = events;
		696
		697	if (o_events != events || o_reify & EV_IOFDSET)
		698	backend_modify (EV_A_ fd, o_events, events);
		699	}
556	}	700	}
557		701
558	fdchangecnt = 0;	702	fdchangecnt = 0;
559	}	703	}
560		704
561	void inline_size	705	void inline_size
562	fd_change (EV_P_ int fd, int flags)	706	fd_change (EV_P_ int fd, int flags)
563	{	707	{
564	unsigned char reify = anfds [fd].reify;	708	unsigned char reify = anfds [fd].reify;
565	anfds [fd].reify |= flags | 1;	709	anfds [fd].reify |= flags;
566		710
567	if (expect_true (!reify))	711	if (expect_true (!reify))
568	{	712	{
569	++fdchangecnt;	713	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	714	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
…		…
628		772
629	for (fd = 0; fd < anfdmax; ++fd)	773	for (fd = 0; fd < anfdmax; ++fd)
630	if (anfds [fd].events)	774	if (anfds [fd].events)
631	{	775	{
632	anfds [fd].events = 0;	776	anfds [fd].events = 0;
633	fd_change (EV_A_ fd, EV_IOFDSET);	777	fd_change (EV_A_ fd, EV_IOFDSET | 1);
634	}	778	}
635	}	779	}
636		780
637	/*****************************************************************************/	781	/*****************************************************************************/
638		782
		783	/*
		784	* the heap functions want a real array index. array index 0 uis guaranteed to not
		785	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		786	* the branching factor of the d-tree.
		787	*/
		788
		789	/*
		790	* at the moment we allow libev the luxury of two heaps,
		791	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		792	* which is more cache-efficient.
		793	* the difference is about 5% with 50000+ watchers.
		794	*/
		795	#define EV_USE_4HEAP !EV_MINIMAL
		796	#if EV_USE_4HEAP
		797
		798	#define DHEAP 4
		799	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		800
		801	/* towards the root */
639	void inline_speed	802	void inline_speed
640	upheap (WT *heap, int k)	803	upheap (ANHE *heap, int k)
641	{	804	{
642	WT w = heap [k];	805	ANHE he = heap [k];
643		806
644	while (k)	807	for (;;)
645	{	808	{
646	int p = (k - 1) >> 1;	809	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
647		810
648	if (heap [p]->at <= w->at)	811	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
649	break;	812	break;
650		813
651	heap [k] = heap [p];	814	heap [k] = heap [p];
652	((W)heap [k])->active = k + 1;	815	ev_active (ANHE_w (heap [k])) = k;
653	k = p;	816	k = p;
654	}	817	}
655		818
		819	ev_active (ANHE_w (he)) = k;
		820	heap [k] = he;
		821	}
		822
		823	/* away from the root */
		824	void inline_speed
		825	downheap (ANHE *heap, int N, int k)
		826	{
		827	ANHE he = heap [k];
		828	ANHE *E = heap + N + HEAP0;
		829
		830	for (;;)
		831	{
		832	ev_tstamp minat;
		833	ANHE *minpos;
		834	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
		835
		836	// find minimum child
		837	if (expect_true (pos + DHEAP - 1 < E))
		838	{
		839	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		840	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		841	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		842	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		843	}
		844	else if (pos < E)
		845	{
		846	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		847	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		848	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		849	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		850	}
		851	else
		852	break;
		853
		854	if (ANHE_at (he) <= minat)
		855	break;
		856
		857	ev_active (ANHE_w (*minpos)) = k;
		858	heap [k] = *minpos;
		859
		860	k = minpos - heap;
		861	}
		862
		863	ev_active (ANHE_w (he)) = k;
		864	heap [k] = he;
		865	}
		866
		867	#else // 4HEAP
		868
		869	#define HEAP0 1
		870
		871	/* towards the root */
		872	void inline_speed
		873	upheap (ANHE *heap, int k)
		874	{
		875	ANHE he = heap [k];
		876
		877	for (;;)
		878	{
		879	int p = k >> 1;
		880
		881	/* maybe we could use a dummy element at heap [0]? */
		882	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
		883	break;
		884
		885	heap [k] = heap [p];
		886	ev_active (ANHE_w (heap [k])) = k;
		887	k = p;
		888	}
		889
656	heap [k] = w;	890	heap [k] = w;
657	((W)heap [k])->active = k + 1;	891	ev_active (ANHE_w (heap [k])) = k;
658	}	892	}
659		893
		894	/* away from the root */
660	void inline_speed	895	void inline_speed
661	downheap (WT *heap, int N, int k)	896	downheap (ANHE *heap, int N, int k)
662	{	897	{
663	WT w = heap [k];	898	ANHE he = heap [k];
664		899
665	for (;;)	900	for (;;)
666	{	901	{
667	int c = (k << 1) + 1;	902	int c = k << 1;
668		903
669	if (c >= N)	904	if (c > N)
670	break;	905	break;
671		906
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at	907	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
673	? 1 : 0;	908	? 1 : 0;
674		909
675	if (w->at <= heap [c]->at)	910	if (w->at <= ANHE_at (heap [c]))
676	break;	911	break;
677		912
678	heap [k] = heap [c];	913	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;	914	ev_active (ANHE_w (heap [k])) = k;
680		915
681	k = c;	916	k = c;
682	}	917	}
683		918
684	heap [k] = w;	919	heap [k] = he;
685	((W)heap [k])->active = k + 1;	920	ev_active (ANHE_w (he)) = k;
686	}	921	}
		922	#endif
687		923
688	void inline_size	924	void inline_size
689	adjustheap (WT *heap, int N, int k)	925	adjustheap (ANHE *heap, int N, int k)
690	{	926	{
691	upheap (heap, k);	927	upheap (heap, k);
692	downheap (heap, N, k);	928	downheap (heap, N, k);
693	}	929	}
694		930
695	/*****************************************************************************/	931	/*****************************************************************************/
696		932
697	typedef struct	933	typedef struct
698	{	934	{
699	WL head;	935	WL head;
700	sig_atomic_t volatile gotsig;	936	EV_ATOMIC_T gotsig;
701	} ANSIG;	937	} ANSIG;
702		938
703	static ANSIG *signals;	939	static ANSIG *signals;
704	static int signalmax;	940	static int signalmax;
705		941
706	static int sigpipe [2];	942	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		943
710	void inline_size	944	void inline_size
711	signals_init (ANSIG *base, int count)	945	signals_init (ANSIG *base, int count)
712	{	946	{
713	while (count--)	947	while (count--)
…		…
717		951
718	++base;	952	++base;
719	}	953	}
720	}	954	}
721		955
722	static void	956	/*****************************************************************************/
723	sighandler (int signum)
724	{
725	#if _WIN32
726	signal (signum, sighandler);
727	#endif
728
729	signals [signum - 1].gotsig = 1;
730
731	if (!gotsig)
732	{
733	int old_errno = errno;
734	gotsig = 1;
735	write (sigpipe [1], &signum, 1);
736	errno = old_errno;
737	}
738	}
739
740	void noinline
741	ev_feed_signal_event (EV_P_ int signum)
742	{
743	WL w;
744
745	#if EV_MULTIPLICITY
746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747	#endif
748
749	--signum;
750
751	if (signum < 0 || signum >= signalmax)
752	return;
753
754	signals [signum].gotsig = 0;
755
756	for (w = signals [signum].head; w; w = w->next)
757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758	}
759
760	static void
761	sigcb (EV_P_ ev_io *iow, int revents)
762	{
763	int signum;
764
765	read (sigpipe [0], &revents, 1);
766	gotsig = 0;
767
768	for (signum = signalmax; signum--; )
769	if (signals [signum].gotsig)
770	ev_feed_signal_event (EV_A_ signum + 1);
771	}
772		957
773	void inline_speed	958	void inline_speed
774	fd_intern (int fd)	959	fd_intern (int fd)
775	{	960	{
776	#ifdef _WIN32	961	#ifdef _WIN32
…		…
781	fcntl (fd, F_SETFL, O_NONBLOCK);	966	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	967	#endif
783	}	968	}
784		969
785	static void noinline	970	static void noinline
786	siginit (EV_P)	971	evpipe_init (EV_P)
787	{	972	{
		973	if (!ev_is_active (&pipeev))
		974	{
		975	#if EV_USE_EVENTFD
		976	if ((evfd = eventfd (0, 0)) >= 0)
		977	{
		978	evpipe [0] = -1;
		979	fd_intern (evfd);
		980	ev_io_set (&pipeev, evfd, EV_READ);
		981	}
		982	else
		983	#endif
		984	{
		985	while (pipe (evpipe))
		986	syserr ("(libev) error creating signal/async pipe");
		987
788	fd_intern (sigpipe [0]);	988	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	989	fd_intern (evpipe [1]);
		990	ev_io_set (&pipeev, evpipe [0], EV_READ);
		991	}
790		992
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	993	ev_io_start (EV_A_ &pipeev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	994	ev_unref (EV_A); /* watcher should not keep loop alive */
		995	}
		996	}
		997
		998	void inline_size
		999	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1000	{
		1001	if (!*flag)
		1002	{
		1003	int old_errno = errno; /* save errno because write might clobber it */
		1004
		1005	*flag = 1;
		1006
		1007	#if EV_USE_EVENTFD
		1008	if (evfd >= 0)
		1009	{
		1010	uint64_t counter = 1;
		1011	write (evfd, &counter, sizeof (uint64_t));
		1012	}
		1013	else
		1014	#endif
		1015	write (evpipe [1], &old_errno, 1);
		1016
		1017	errno = old_errno;
		1018	}
		1019	}
		1020
		1021	static void
		1022	pipecb (EV_P_ ev_io *iow, int revents)
		1023	{
		1024	#if EV_USE_EVENTFD
		1025	if (evfd >= 0)
		1026	{
		1027	uint64_t counter;
		1028	read (evfd, &counter, sizeof (uint64_t));
		1029	}
		1030	else
		1031	#endif
		1032	{
		1033	char dummy;
		1034	read (evpipe [0], &dummy, 1);
		1035	}
		1036
		1037	if (gotsig && ev_is_default_loop (EV_A))
		1038	{
		1039	int signum;
		1040	gotsig = 0;
		1041
		1042	for (signum = signalmax; signum--; )
		1043	if (signals [signum].gotsig)
		1044	ev_feed_signal_event (EV_A_ signum + 1);
		1045	}
		1046
		1047	#if EV_ASYNC_ENABLE
		1048	if (gotasync)
		1049	{
		1050	int i;
		1051	gotasync = 0;
		1052
		1053	for (i = asynccnt; i--; )
		1054	if (asyncs [i]->sent)
		1055	{
		1056	asyncs [i]->sent = 0;
		1057	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1058	}
		1059	}
		1060	#endif
794	}	1061	}
795		1062
796	/*****************************************************************************/	1063	/*****************************************************************************/
797		1064
		1065	static void
		1066	ev_sighandler (int signum)
		1067	{
		1068	#if EV_MULTIPLICITY
		1069	struct ev_loop *loop = &default_loop_struct;
		1070	#endif
		1071
		1072	#if _WIN32
		1073	signal (signum, ev_sighandler);
		1074	#endif
		1075
		1076	signals [signum - 1].gotsig = 1;
		1077	evpipe_write (EV_A_ &gotsig);
		1078	}
		1079
		1080	void noinline
		1081	ev_feed_signal_event (EV_P_ int signum)
		1082	{
		1083	WL w;
		1084
		1085	#if EV_MULTIPLICITY
		1086	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1087	#endif
		1088
		1089	--signum;
		1090
		1091	if (signum < 0 || signum >= signalmax)
		1092	return;
		1093
		1094	signals [signum].gotsig = 0;
		1095
		1096	for (w = signals [signum].head; w; w = w->next)
		1097	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1098	}
		1099
		1100	/*****************************************************************************/
		1101
798	static WL childs [EV_PID_HASHSIZE];	1102	static WL childs [EV_PID_HASHSIZE];
799		1103
800	#ifndef _WIN32	1104	#ifndef _WIN32
801		1105
802	static ev_signal childev;	1106	static ev_signal childev;
803		1107
		1108	#ifndef WIFCONTINUED
		1109	# define WIFCONTINUED(status) 0
		1110	#endif
		1111
804	void inline_speed	1112	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1113	child_reap (EV_P_ int chain, int pid, int status)
806	{	1114	{
807	ev_child *w;	1115	ev_child *w;
		1116	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1117
809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1118	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1119	{
810	if (w->pid == pid || !w->pid)	1120	if ((w->pid == pid || !w->pid)
		1121	&& (!traced || (w->flags & 1)))
811	{	1122	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1123	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
813	w->rpid = pid;	1124	w->rpid = pid;
814	w->rstatus = status;	1125	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1126	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1127	}
		1128	}
817	}	1129	}
818		1130
819	#ifndef WCONTINUED	1131	#ifndef WCONTINUED
820	# define WCONTINUED 0	1132	# define WCONTINUED 0
821	#endif	1133	#endif
…		…
830	if (!WCONTINUED	1142	if (!WCONTINUED
831	|| errno != EINVAL	1143	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1144	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1145	return;
834		1146
835	/* make sure we are called again until all childs have been reaped */	1147	/* make sure we are called again until all children have been reaped */
836	/* we need to do it this way so that the callback gets called before we continue */	1148	/* we need to do it this way so that the callback gets called before we continue */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1149	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1150
839	child_reap (EV_A_ sw, pid, pid, status);	1151	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1152	if (EV_PID_HASHSIZE > 1)
841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1153	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1154	}
843		1155
844	#endif	1156	#endif
845		1157
846	/*****************************************************************************/	1158	/*****************************************************************************/
…		…
918	}	1230	}
919		1231
920	unsigned int	1232	unsigned int
921	ev_embeddable_backends (void)	1233	ev_embeddable_backends (void)
922	{	1234	{
923	return EVBACKEND_EPOLL	1235	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1236
925	| EVBACKEND_PORT;	1237	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1238	/* please fix it and tell me how to detect the fix */
		1239	flags &= ~EVBACKEND_EPOLL;
		1240
		1241	return flags;
926	}	1242	}
927		1243
928	unsigned int	1244	unsigned int
929	ev_backend (EV_P)	1245	ev_backend (EV_P)
930	{	1246	{
…		…
933		1249
934	unsigned int	1250	unsigned int
935	ev_loop_count (EV_P)	1251	ev_loop_count (EV_P)
936	{	1252	{
937	return loop_count;	1253	return loop_count;
		1254	}
		1255
		1256	void
		1257	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1258	{
		1259	io_blocktime = interval;
		1260	}
		1261
		1262	void
		1263	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1264	{
		1265	timeout_blocktime = interval;
938	}	1266	}
939		1267
940	static void noinline	1268	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1269	loop_init (EV_P_ unsigned int flags)
942	{	1270	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1276	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1277	have_monotonic = 1;
950	}	1278	}
951	#endif	1279	#endif
952		1280
953	ev_rt_now = ev_time ();	1281	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1282	mn_now = get_clock ();
955	now_floor = mn_now;	1283	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1284	rtmn_diff = ev_rt_now - mn_now;
		1285
		1286	io_blocktime = 0.;
		1287	timeout_blocktime = 0.;
		1288	backend = 0;
		1289	backend_fd = -1;
		1290	gotasync = 0;
		1291	#if EV_USE_INOTIFY
		1292	fs_fd = -2;
		1293	#endif
957		1294
958	/* pid check not overridable via env */	1295	/* pid check not overridable via env */
959	#ifndef _WIN32	1296	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1297	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1298	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1301	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1302	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1303	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1304	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1305
969	if (!(flags & 0x0000ffffUL))	1306	if (!(flags & 0x0000ffffU))
970	flags |= ev_recommended_backends ();	1307	flags |= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1308
978	#if EV_USE_PORT	1309	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1310	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1311	#endif
981	#if EV_USE_KQUEUE	1312	#if EV_USE_KQUEUE
…		…
989	#endif	1320	#endif
990	#if EV_USE_SELECT	1321	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1322	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1323	#endif
993		1324
994	ev_init (&sigev, sigcb);	1325	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1326	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1327	}
997	}	1328	}
998		1329
999	static void noinline	1330	static void noinline
1000	loop_destroy (EV_P)	1331	loop_destroy (EV_P)
1001	{	1332	{
1002	int i;	1333	int i;
		1334
		1335	if (ev_is_active (&pipeev))
		1336	{
		1337	ev_ref (EV_A); /* signal watcher */
		1338	ev_io_stop (EV_A_ &pipeev);
		1339
		1340	#if EV_USE_EVENTFD
		1341	if (evfd >= 0)
		1342	close (evfd);
		1343	#endif
		1344
		1345	if (evpipe [0] >= 0)
		1346	{
		1347	close (evpipe [0]);
		1348	close (evpipe [1]);
		1349	}
		1350	}
1003		1351
1004	#if EV_USE_INOTIFY	1352	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1353	if (fs_fd >= 0)
1006	close (fs_fd);	1354	close (fs_fd);
1007	#endif	1355	#endif
…		…
1030	array_free (pending, [i]);	1378	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1379	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1380	array_free (idle, [i]);
1033	#endif	1381	#endif
1034	}	1382	}
		1383
		1384	ev_free (anfds); anfdmax = 0;
1035		1385
1036	/* have to use the microsoft-never-gets-it-right macro */	1386	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1387	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1388	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1389	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1390	array_free (periodic, EMPTY);
1041	#endif	1391	#endif
		1392	#if EV_FORK_ENABLE
		1393	array_free (fork, EMPTY);
		1394	#endif
1042	array_free (prepare, EMPTY);	1395	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1396	array_free (check, EMPTY);
		1397	#if EV_ASYNC_ENABLE
		1398	array_free (async, EMPTY);
		1399	#endif
1044		1400
1045	backend = 0;	1401	backend = 0;
1046	}	1402	}
1047		1403
		1404	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	1405	void inline_size infy_fork (EV_P);
		1406	#endif
1049		1407
1050	void inline_size	1408	void inline_size
1051	loop_fork (EV_P)	1409	loop_fork (EV_P)
1052	{	1410	{
1053	#if EV_USE_PORT	1411	#if EV_USE_PORT
…		…
1061	#endif	1419	#endif
1062	#if EV_USE_INOTIFY	1420	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1421	infy_fork (EV_A);
1064	#endif	1422	#endif
1065		1423
1066	if (ev_is_active (&sigev))	1424	if (ev_is_active (&pipeev))
1067	{	1425	{
1068	/* default loop */	1426	/* this "locks" the handlers against writing to the pipe */
		1427	/* while we modify the fd vars */
		1428	gotsig = 1;
		1429	#if EV_ASYNC_ENABLE
		1430	gotasync = 1;
		1431	#endif
1069		1432
1070	ev_ref (EV_A);	1433	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1434	ev_io_stop (EV_A_ &pipeev);
		1435
		1436	#if EV_USE_EVENTFD
		1437	if (evfd >= 0)
		1438	close (evfd);
		1439	#endif
		1440
		1441	if (evpipe [0] >= 0)
		1442	{
1072	close (sigpipe [0]);	1443	close (evpipe [0]);
1073	close (sigpipe [1]);	1444	close (evpipe [1]);
		1445	}
1074		1446
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1447	evpipe_init (EV_A);
		1448	/* now iterate over everything, in case we missed something */
		1449	pipecb (EV_A_ &pipeev, EV_READ);
1079	}	1450	}
1080		1451
1081	postfork = 0;	1452	postfork = 0;
1082	}	1453	}
1083		1454
…		…
1105	}	1476	}
1106		1477
1107	void	1478	void
1108	ev_loop_fork (EV_P)	1479	ev_loop_fork (EV_P)
1109	{	1480	{
1110	postfork = 1;	1481	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1482	}
1112
1113	#endif	1483	#endif
1114		1484
1115	#if EV_MULTIPLICITY	1485	#if EV_MULTIPLICITY
1116	struct ev_loop *	1486	struct ev_loop *
1117	ev_default_loop_init (unsigned int flags)	1487	ev_default_loop_init (unsigned int flags)
1118	#else	1488	#else
1119	int	1489	int
1120	ev_default_loop (unsigned int flags)	1490	ev_default_loop (unsigned int flags)
1121	#endif	1491	#endif
1122	{	1492	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1493	if (!ev_default_loop_ptr)
1128	{	1494	{
1129	#if EV_MULTIPLICITY	1495	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1496	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1497	#else
…		…
1134		1500
1135	loop_init (EV_A_ flags);	1501	loop_init (EV_A_ flags);
1136		1502
1137	if (ev_backend (EV_A))	1503	if (ev_backend (EV_A))
1138	{	1504	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1505	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1506	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1507	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1508	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1509	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1526	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1527	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1528	ev_signal_stop (EV_A_ &childev);
1165	#endif	1529	#endif
1166		1530
1167	ev_ref (EV_A); /* signal watcher */
1168	ev_io_stop (EV_A_ &sigev);
1169
1170	close (sigpipe [0]); sigpipe [0] = 0;
1171	close (sigpipe [1]); sigpipe [1] = 0;
1172
1173	loop_destroy (EV_A);	1531	loop_destroy (EV_A);
1174	}	1532	}
1175		1533
1176	void	1534	void
1177	ev_default_fork (void)	1535	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1537	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1538	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1539	#endif
1182		1540
1183	if (backend)	1541	if (backend)
1184	postfork = 1;	1542	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1543	}
1186		1544
1187	/*****************************************************************************/	1545	/*****************************************************************************/
1188		1546
1189	void	1547	void
…		…
1209	p->w->pending = 0;	1567	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	1568	EV_CB_INVOKE (p->w, p->events);
1211	}	1569	}
1212	}	1570	}
1213	}	1571	}
1214
1215	void inline_size
1216	timers_reify (EV_P)
1217	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{
1220	ev_timer *w = (ev_timer *)timers [0];
1221
1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1223
1224	/* first reschedule or stop timer */
1225	if (w->repeat)
1226	{
1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
1229	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;
1232
1233	downheap (timers, timercnt, 0);
1234	}
1235	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1239	}
1240	}
1241
1242	#if EV_PERIODIC_ENABLE
1243	void inline_size
1244	periodics_reify (EV_P)
1245	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{
1248	ev_periodic *w = (ev_periodic *)periodics [0];
1249
1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1251
1252	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)
1254	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap (periodics, periodiccnt, 0);
1258	}
1259	else if (w->interval)
1260	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264	downheap (periodics, periodiccnt, 0);
1265	}
1266	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1270	}
1271	}
1272
1273	static void noinline
1274	periodics_reschedule (EV_P)
1275	{
1276	int i;
1277
1278	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)
1280	{
1281	ev_periodic *w = (ev_periodic *)periodics [i];
1282
1283	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}
1288
1289	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )
1291	downheap (periodics, periodiccnt, i);
1292	}
1293	#endif
1294		1572
1295	#if EV_IDLE_ENABLE	1573	#if EV_IDLE_ENABLE
1296	void inline_size	1574	void inline_size
1297	idle_reify (EV_P)	1575	idle_reify (EV_P)
1298	{	1576	{
…		…
1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1588	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311	break;	1589	break;
1312	}	1590	}
1313	}	1591	}
1314	}	1592	}
		1593	}
		1594	#endif
		1595
		1596	void inline_size
		1597	timers_reify (EV_P)
		1598	{
		1599	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)
		1600	{
		1601	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1602
		1603	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1604
		1605	/* first reschedule or stop timer */
		1606	if (w->repeat)
		1607	{
		1608	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1609
		1610	ev_at (w) += w->repeat;
		1611	if (ev_at (w) < mn_now)
		1612	ev_at (w) = mn_now;
		1613
		1614	downheap (timers, timercnt, HEAP0);
		1615	}
		1616	else
		1617	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1618
		1619	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1620	}
		1621	}
		1622
		1623	#if EV_PERIODIC_ENABLE
		1624	void inline_size
		1625	periodics_reify (EV_P)
		1626	{
		1627	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)
		1628	{
		1629	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1630
		1631	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1632
		1633	/* first reschedule or stop timer */
		1634	if (w->reschedule_cb)
		1635	{
		1636	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1637	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1638	downheap (periodics, periodiccnt, 1);
		1639	}
		1640	else if (w->interval)
		1641	{
		1642	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1643	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1644	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1645	downheap (periodics, periodiccnt, HEAP0);
		1646	}
		1647	else
		1648	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1649
		1650	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1651	}
		1652	}
		1653
		1654	static void noinline
		1655	periodics_reschedule (EV_P)
		1656	{
		1657	int i;
		1658
		1659	/* adjust periodics after time jump */
		1660	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1661	{
		1662	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1663
		1664	if (w->reschedule_cb)
		1665	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1666	else if (w->interval)
		1667	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1668	}
		1669
		1670	/* now rebuild the heap, this for the 2-heap, inefficient for the 4-heap, but correct */
		1671	for (i = periodiccnt >> 1; --i; )
		1672	downheap (periodics, periodiccnt, i + HEAP0);
1315	}	1673	}
1316	#endif	1674	#endif
1317		1675
1318	void inline_speed	1676	void inline_speed
1319	time_update (EV_P_ ev_tstamp max_block)	1677	time_update (EV_P_ ev_tstamp max_block)
…		…
1348	*/	1706	*/
1349	for (i = 4; --i; )	1707	for (i = 4; --i; )
1350	{	1708	{
1351	rtmn_diff = ev_rt_now - mn_now;	1709	rtmn_diff = ev_rt_now - mn_now;
1352		1710
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1711	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	1712	return; /* all is well */
1355		1713
1356	ev_rt_now = ev_time ();	1714	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	1715	mn_now = get_clock ();
1358	now_floor = mn_now;	1716	now_floor = mn_now;
…		…
1374	#if EV_PERIODIC_ENABLE	1732	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	1733	periodics_reschedule (EV_A);
1376	#endif	1734	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */	1735	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)	1736	for (i = 0; i < timercnt; ++i)
		1737	{
		1738	ANHE *he = timers + i + HEAP0;
1379	((WT)timers [i])->at += ev_rt_now - mn_now;	1739	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1740	ANHE_at_set (*he);
		1741	}
1380	}	1742	}
1381		1743
1382	mn_now = ev_rt_now;	1744	mn_now = ev_rt_now;
1383	}	1745	}
1384	}	1746	}
…		…
1398	static int loop_done;	1760	static int loop_done;
1399		1761
1400	void	1762	void
1401	ev_loop (EV_P_ int flags)	1763	ev_loop (EV_P_ int flags)
1402	{	1764	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1765	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1766
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1767	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1768
1409	do	1769	do
1410	{	1770	{
…		…
1444	/* update fd-related kernel structures */	1804	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1805	fd_reify (EV_A);
1446		1806
1447	/* calculate blocking time */	1807	/* calculate blocking time */
1448	{	1808	{
1449	ev_tstamp block;	1809	ev_tstamp waittime = 0.;
		1810	ev_tstamp sleeptime = 0.;
1450		1811
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1812	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1813	{
1455	/* update time to cancel out callback processing overhead */	1814	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1815	time_update (EV_A_ 1e100);
1457		1816
1458	block = MAX_BLOCKTIME;	1817	waittime = MAX_BLOCKTIME;
1459		1818
1460	if (timercnt)	1819	if (timercnt)
1461	{	1820	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1821	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463	if (block > to) block = to;	1822	if (waittime > to) waittime = to;
1464	}	1823	}
1465		1824
1466	#if EV_PERIODIC_ENABLE	1825	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1826	if (periodiccnt)
1468	{	1827	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1828	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	1829	if (waittime > to) waittime = to;
1471	}	1830	}
1472	#endif	1831	#endif
1473		1832
1474	if (expect_false (block < 0.)) block = 0.;	1833	if (expect_false (waittime < timeout_blocktime))
		1834	waittime = timeout_blocktime;
		1835
		1836	sleeptime = waittime - backend_fudge;
		1837
		1838	if (expect_true (sleeptime > io_blocktime))
		1839	sleeptime = io_blocktime;
		1840
		1841	if (sleeptime)
		1842	{
		1843	ev_sleep (sleeptime);
		1844	waittime -= sleeptime;
		1845	}
1475	}	1846	}
1476		1847
1477	++loop_count;	1848	++loop_count;
1478	backend_poll (EV_A_ block);	1849	backend_poll (EV_A_ waittime);
1479		1850
1480	/* update ev_rt_now, do magic */	1851	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	1852	time_update (EV_A_ waittime + sleeptime);
1482	}	1853	}
1483		1854
1484	/* queue pending timers and reschedule them */	1855	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	1856	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	1857	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	1866	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	1867	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1868	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		1869
1499	call_pending (EV_A);	1870	call_pending (EV_A);
1500
1501	}	1871	}
1502	while (expect_true (activecnt && !loop_done));	1872	while (expect_true (
		1873	activecnt
		1874	&& !loop_done
		1875	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1876	));
1503		1877
1504	if (loop_done == EVUNLOOP_ONE)	1878	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	1879	loop_done = EVUNLOOP_CANCEL;
1506	}	1880	}
1507		1881
…		…
1600		1974
1601	ev_start (EV_A_ (W)w, 1);	1975	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1976	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add (&anfds[fd].head, (WL)w);	1977	wlist_add (&anfds[fd].head, (WL)w);
1604		1978
1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);	1979	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1606	w->events &= ~ EV_IOFDSET;	1980	w->events &= ~EV_IOFDSET;
1607	}	1981	}
1608		1982
1609	void noinline	1983	void noinline
1610	ev_io_stop (EV_P_ ev_io *w)	1984	ev_io_stop (EV_P_ ev_io *w)
1611	{	1985	{
…		…
1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1990	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1617		1991
1618	wlist_del (&anfds[w->fd].head, (WL)w);	1992	wlist_del (&anfds[w->fd].head, (WL)w);
1619	ev_stop (EV_A_ (W)w);	1993	ev_stop (EV_A_ (W)w);
1620		1994
1621	fd_change (EV_A_ w->fd, 0);	1995	fd_change (EV_A_ w->fd, 1);
1622	}	1996	}
1623		1997
1624	void noinline	1998	void noinline
1625	ev_timer_start (EV_P_ ev_timer *w)	1999	ev_timer_start (EV_P_ ev_timer *w)
1626	{	2000	{
1627	if (expect_false (ev_is_active (w)))	2001	if (expect_false (ev_is_active (w)))
1628	return;	2002	return;
1629		2003
1630	((WT)w)->at += mn_now;	2004	ev_at (w) += mn_now;
1631		2005
1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2006	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1633		2007
1634	ev_start (EV_A_ (W)w, ++timercnt);	2008	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2009	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1636	timers [timercnt - 1] = (WT)w;	2010	ANHE_w (timers [ev_active (w)]) = (WT)w;
1637	upheap (timers, timercnt - 1);	2011	ANHE_at_set (timers [ev_active (w)]);
		2012	upheap (timers, ev_active (w));
1638		2013
1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2014	/*assert (("internal timer heap corruption", timers [ev_active (w)] == w));*/
1640	}	2015	}
1641		2016
1642	void noinline	2017	void noinline
1643	ev_timer_stop (EV_P_ ev_timer *w)	2018	ev_timer_stop (EV_P_ ev_timer *w)
1644	{	2019	{
1645	clear_pending (EV_A_ (W)w);	2020	clear_pending (EV_A_ (W)w);
1646	if (expect_false (!ev_is_active (w)))	2021	if (expect_false (!ev_is_active (w)))
1647	return;	2022	return;
1648		2023
1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1650
1651	{	2024	{
1652	int active = ((W)w)->active;	2025	int active = ev_active (w);
1653		2026
		2027	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2028
1654	if (expect_true (--active < --timercnt))	2029	if (expect_true (active < timercnt + HEAP0 - 1))
1655	{	2030	{
1656	timers [active] = timers [timercnt];	2031	timers [active] = timers [timercnt + HEAP0 - 1];
1657	adjustheap (timers, timercnt, active);	2032	adjustheap (timers, timercnt, active);
1658	}	2033	}
		2034
		2035	--timercnt;
1659	}	2036	}
1660		2037
1661	((WT)w)->at -= mn_now;	2038	ev_at (w) -= mn_now;
1662		2039
1663	ev_stop (EV_A_ (W)w);	2040	ev_stop (EV_A_ (W)w);
1664	}	2041	}
1665		2042
1666	void noinline	2043	void noinline
…		…
1668	{	2045	{
1669	if (ev_is_active (w))	2046	if (ev_is_active (w))
1670	{	2047	{
1671	if (w->repeat)	2048	if (w->repeat)
1672	{	2049	{
1673	((WT)w)->at = mn_now + w->repeat;	2050	ev_at (w) = mn_now + w->repeat;
		2051	ANHE_at_set (timers [ev_active (w)]);
1674	adjustheap (timers, timercnt, ((W)w)->active - 1);	2052	adjustheap (timers, timercnt, ev_active (w));
1675	}	2053	}
1676	else	2054	else
1677	ev_timer_stop (EV_A_ w);	2055	ev_timer_stop (EV_A_ w);
1678	}	2056	}
1679	else if (w->repeat)	2057	else if (w->repeat)
1680	{	2058	{
1681	w->at = w->repeat;	2059	ev_at (w) = w->repeat;
1682	ev_timer_start (EV_A_ w);	2060	ev_timer_start (EV_A_ w);
1683	}	2061	}
1684	}	2062	}
1685		2063
1686	#if EV_PERIODIC_ENABLE	2064	#if EV_PERIODIC_ENABLE
…		…
1689	{	2067	{
1690	if (expect_false (ev_is_active (w)))	2068	if (expect_false (ev_is_active (w)))
1691	return;	2069	return;
1692		2070
1693	if (w->reschedule_cb)	2071	if (w->reschedule_cb)
1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2072	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1695	else if (w->interval)	2073	else if (w->interval)
1696	{	2074	{
1697	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2075	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1698	/* this formula differs from the one in periodic_reify because we do not always round up */	2076	/* this formula differs from the one in periodic_reify because we do not always round up */
1699	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2077	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1700	}	2078	}
1701	else	2079	else
1702	((WT)w)->at = w->offset;	2080	ev_at (w) = w->offset;
1703		2081
1704	ev_start (EV_A_ (W)w, ++periodiccnt);	2082	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2083	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1706	periodics [periodiccnt - 1] = (WT)w;	2084	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1707	upheap (periodics, periodiccnt - 1);	2085	upheap (periodics, ev_active (w));
1708		2086
1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2087	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1710	}	2088	}
1711		2089
1712	void noinline	2090	void noinline
1713	ev_periodic_stop (EV_P_ ev_periodic *w)	2091	ev_periodic_stop (EV_P_ ev_periodic *w)
1714	{	2092	{
1715	clear_pending (EV_A_ (W)w);	2093	clear_pending (EV_A_ (W)w);
1716	if (expect_false (!ev_is_active (w)))	2094	if (expect_false (!ev_is_active (w)))
1717	return;	2095	return;
1718		2096
1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1720
1721	{	2097	{
1722	int active = ((W)w)->active;	2098	int active = ev_active (w);
1723		2099
		2100	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2101
1724	if (expect_true (--active < --periodiccnt))	2102	if (expect_true (active < periodiccnt + HEAP0 - 1))
1725	{	2103	{
1726	periodics [active] = periodics [periodiccnt];	2104	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1727	adjustheap (periodics, periodiccnt, active);	2105	adjustheap (periodics, periodiccnt, active);
1728	}	2106	}
		2107
		2108	--periodiccnt;
1729	}	2109	}
1730		2110
1731	ev_stop (EV_A_ (W)w);	2111	ev_stop (EV_A_ (W)w);
1732	}	2112	}
1733		2113
…		…
1752	#endif	2132	#endif
1753	if (expect_false (ev_is_active (w)))	2133	if (expect_false (ev_is_active (w)))
1754	return;	2134	return;
1755		2135
1756	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2136	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2137
		2138	evpipe_init (EV_A);
1757		2139
1758	{	2140	{
1759	#ifndef _WIN32	2141	#ifndef _WIN32
1760	sigset_t full, prev;	2142	sigset_t full, prev;
1761	sigfillset (&full);	2143	sigfillset (&full);
…		…
1773	wlist_add (&signals [w->signum - 1].head, (WL)w);	2155	wlist_add (&signals [w->signum - 1].head, (WL)w);
1774		2156
1775	if (!((WL)w)->next)	2157	if (!((WL)w)->next)
1776	{	2158	{
1777	#if _WIN32	2159	#if _WIN32
1778	signal (w->signum, sighandler);	2160	signal (w->signum, ev_sighandler);
1779	#else	2161	#else
1780	struct sigaction sa;	2162	struct sigaction sa;
1781	sa.sa_handler = sighandler;	2163	sa.sa_handler = ev_sighandler;
1782	sigfillset (&sa.sa_mask);	2164	sigfillset (&sa.sa_mask);
1783	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2165	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1784	sigaction (w->signum, &sa, 0);	2166	sigaction (w->signum, &sa, 0);
1785	#endif	2167	#endif
1786	}	2168	}
…		…
1847	if (w->wd < 0)	2229	if (w->wd < 0)
1848	{	2230	{
1849	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2231	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1850		2232
1851	/* monitor some parent directory for speedup hints */	2233	/* monitor some parent directory for speedup hints */
		2234	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2235	/* but an efficiency issue only */
1852	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2236	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1853	{	2237	{
1854	char path [4096];	2238	char path [4096];
1855	strcpy (path, w->path);	2239	strcpy (path, w->path);
1856		2240
…		…
2101	clear_pending (EV_A_ (W)w);	2485	clear_pending (EV_A_ (W)w);
2102	if (expect_false (!ev_is_active (w)))	2486	if (expect_false (!ev_is_active (w)))
2103	return;	2487	return;
2104		2488
2105	{	2489	{
2106	int active = ((W)w)->active;	2490	int active = ev_active (w);
2107		2491
2108	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2492	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2109	((W)idles [ABSPRI (w)][active - 1])->active = active;	2493	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2110		2494
2111	ev_stop (EV_A_ (W)w);	2495	ev_stop (EV_A_ (W)w);
2112	--idleall;	2496	--idleall;
2113	}	2497	}
2114	}	2498	}
…		…
2131	clear_pending (EV_A_ (W)w);	2515	clear_pending (EV_A_ (W)w);
2132	if (expect_false (!ev_is_active (w)))	2516	if (expect_false (!ev_is_active (w)))
2133	return;	2517	return;
2134		2518
2135	{	2519	{
2136	int active = ((W)w)->active;	2520	int active = ev_active (w);
		2521
2137	prepares [active - 1] = prepares [--preparecnt];	2522	prepares [active - 1] = prepares [--preparecnt];
2138	((W)prepares [active - 1])->active = active;	2523	ev_active (prepares [active - 1]) = active;
2139	}	2524	}
2140		2525
2141	ev_stop (EV_A_ (W)w);	2526	ev_stop (EV_A_ (W)w);
2142	}	2527	}
2143		2528
…		…
2158	clear_pending (EV_A_ (W)w);	2543	clear_pending (EV_A_ (W)w);
2159	if (expect_false (!ev_is_active (w)))	2544	if (expect_false (!ev_is_active (w)))
2160	return;	2545	return;
2161		2546
2162	{	2547	{
2163	int active = ((W)w)->active;	2548	int active = ev_active (w);
		2549
2164	checks [active - 1] = checks [--checkcnt];	2550	checks [active - 1] = checks [--checkcnt];
2165	((W)checks [active - 1])->active = active;	2551	ev_active (checks [active - 1]) = active;
2166	}	2552	}
2167		2553
2168	ev_stop (EV_A_ (W)w);	2554	ev_stop (EV_A_ (W)w);
2169	}	2555	}
2170		2556
2171	#if EV_EMBED_ENABLE	2557	#if EV_EMBED_ENABLE
2172	void noinline	2558	void noinline
2173	ev_embed_sweep (EV_P_ ev_embed *w)	2559	ev_embed_sweep (EV_P_ ev_embed *w)
2174	{	2560	{
2175	ev_loop (w->loop, EVLOOP_NONBLOCK);	2561	ev_loop (w->other, EVLOOP_NONBLOCK);
2176	}	2562	}
2177		2563
2178	static void	2564	static void
2179	embed_cb (EV_P_ ev_io *io, int revents)	2565	embed_io_cb (EV_P_ ev_io *io, int revents)
2180	{	2566	{
2181	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2567	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2182		2568
2183	if (ev_cb (w))	2569	if (ev_cb (w))
2184	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2570	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2185	else	2571	else
2186	ev_embed_sweep (loop, w);	2572	ev_loop (w->other, EVLOOP_NONBLOCK);
2187	}	2573	}
		2574
		2575	static void
		2576	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2577	{
		2578	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2579
		2580	{
		2581	struct ev_loop *loop = w->other;
		2582
		2583	while (fdchangecnt)
		2584	{
		2585	fd_reify (EV_A);
		2586	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2587	}
		2588	}
		2589	}
		2590
		2591	#if 0
		2592	static void
		2593	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2594	{
		2595	ev_idle_stop (EV_A_ idle);
		2596	}
		2597	#endif
2188		2598
2189	void	2599	void
2190	ev_embed_start (EV_P_ ev_embed *w)	2600	ev_embed_start (EV_P_ ev_embed *w)
2191	{	2601	{
2192	if (expect_false (ev_is_active (w)))	2602	if (expect_false (ev_is_active (w)))
2193	return;	2603	return;
2194		2604
2195	{	2605	{
2196	struct ev_loop *loop = w->loop;	2606	struct ev_loop *loop = w->other;
2197	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2607	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2198	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2608	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2199	}	2609	}
2200		2610
2201	ev_set_priority (&w->io, ev_priority (w));	2611	ev_set_priority (&w->io, ev_priority (w));
2202	ev_io_start (EV_A_ &w->io);	2612	ev_io_start (EV_A_ &w->io);
		2613
		2614	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2615	ev_set_priority (&w->prepare, EV_MINPRI);
		2616	ev_prepare_start (EV_A_ &w->prepare);
		2617
		2618	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2203		2619
2204	ev_start (EV_A_ (W)w, 1);	2620	ev_start (EV_A_ (W)w, 1);
2205	}	2621	}
2206		2622
2207	void	2623	void
…		…
2210	clear_pending (EV_A_ (W)w);	2626	clear_pending (EV_A_ (W)w);
2211	if (expect_false (!ev_is_active (w)))	2627	if (expect_false (!ev_is_active (w)))
2212	return;	2628	return;
2213		2629
2214	ev_io_stop (EV_A_ &w->io);	2630	ev_io_stop (EV_A_ &w->io);
		2631	ev_prepare_stop (EV_A_ &w->prepare);
2215		2632
2216	ev_stop (EV_A_ (W)w);	2633	ev_stop (EV_A_ (W)w);
2217	}	2634	}
2218	#endif	2635	#endif
2219		2636
…		…
2235	clear_pending (EV_A_ (W)w);	2652	clear_pending (EV_A_ (W)w);
2236	if (expect_false (!ev_is_active (w)))	2653	if (expect_false (!ev_is_active (w)))
2237	return;	2654	return;
2238		2655
2239	{	2656	{
2240	int active = ((W)w)->active;	2657	int active = ev_active (w);
		2658
2241	forks [active - 1] = forks [--forkcnt];	2659	forks [active - 1] = forks [--forkcnt];
2242	((W)forks [active - 1])->active = active;	2660	ev_active (forks [active - 1]) = active;
2243	}	2661	}
2244		2662
2245	ev_stop (EV_A_ (W)w);	2663	ev_stop (EV_A_ (W)w);
		2664	}
		2665	#endif
		2666
		2667	#if EV_ASYNC_ENABLE
		2668	void
		2669	ev_async_start (EV_P_ ev_async *w)
		2670	{
		2671	if (expect_false (ev_is_active (w)))
		2672	return;
		2673
		2674	evpipe_init (EV_A);
		2675
		2676	ev_start (EV_A_ (W)w, ++asynccnt);
		2677	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2678	asyncs [asynccnt - 1] = w;
		2679	}
		2680
		2681	void
		2682	ev_async_stop (EV_P_ ev_async *w)
		2683	{
		2684	clear_pending (EV_A_ (W)w);
		2685	if (expect_false (!ev_is_active (w)))
		2686	return;
		2687
		2688	{
		2689	int active = ev_active (w);
		2690
		2691	asyncs [active - 1] = asyncs [--asynccnt];
		2692	ev_active (asyncs [active - 1]) = active;
		2693	}
		2694
		2695	ev_stop (EV_A_ (W)w);
		2696	}
		2697
		2698	void
		2699	ev_async_send (EV_P_ ev_async *w)
		2700	{
		2701	w->sent = 1;
		2702	evpipe_write (EV_A_ &gotasync);
2246	}	2703	}
2247	#endif	2704	#endif
2248		2705
2249	/*****************************************************************************/	2706	/*****************************************************************************/
2250		2707
…		…
2308	ev_timer_set (&once->to, timeout, 0.);	2765	ev_timer_set (&once->to, timeout, 0.);
2309	ev_timer_start (EV_A_ &once->to);	2766	ev_timer_start (EV_A_ &once->to);
2310	}	2767	}
2311	}	2768	}
2312		2769
		2770	#if EV_MULTIPLICITY
		2771	#include "ev_wrap.h"
		2772	#endif
		2773
2313	#ifdef __cplusplus	2774	#ifdef __cplusplus
2314	}	2775	}
2315	#endif	2776	#endif
2316		2777

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