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Comparing libev/ev.c (file contents):
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC vs.
Revision 1.243 by root, Fri May 9 15:52:13 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	#ifndef EV_USE_4HEAP
		241	# define EV_USE_4HEAP !EV_MINIMAL
		242	#endif
		243
		244	#ifndef EV_HEAP_CACHE_AT
		245	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		246	#endif
		247
		248	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		249
197	#ifndef CLOCK_MONOTONIC	250	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	251	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	252	# define EV_USE_MONOTONIC 0
200	#endif	253	#endif
…		…
202	#ifndef CLOCK_REALTIME	255	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	256	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	257	# define EV_USE_REALTIME 0
205	#endif	258	#endif
206		259
		260	#if !EV_STAT_ENABLE
		261	# undef EV_USE_INOTIFY
		262	# define EV_USE_INOTIFY 0
		263	#endif
		264
		265	#if !EV_USE_NANOSLEEP
		266	# ifndef _WIN32
		267	# include <sys/select.h>
		268	# endif
		269	#endif
		270
		271	#if EV_USE_INOTIFY
		272	# include <sys/inotify.h>
		273	#endif
		274
207	#if EV_SELECT_IS_WINSOCKET	275	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	276	# include <winsock.h>
209	#endif	277	#endif
210		278
211	#if !EV_STAT_ENABLE	279	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	280	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		281	# include <stdint.h>
		282	# ifdef __cplusplus
		283	extern "C" {
213	#endif	284	# endif
214		285	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	286	# ifdef __cplusplus
216	# include <sys/inotify.h>	287	}
		288	# endif
217	#endif	289	#endif
218		290
219	/**/	291	/**/
220		292
221	/*	293	/*
…		…
230		302
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	303	#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) */	304	#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 */	305	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		306
235	#if __GNUC__ >= 3	307	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	308	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	309	# define noinline __attribute__ ((noinline))
238	#else	310	#else
239	# define expect(expr,value) (expr)	311	# define expect(expr,value) (expr)
240	# define noinline	312	# define noinline
241	# if __STDC_VERSION__ < 199901L	313	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	314	# define inline
243	# endif	315	# endif
244	#endif	316	#endif
245		317
246	#define expect_false(expr) expect ((expr) != 0, 0)	318	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
261		333
262	typedef ev_watcher *W;	334	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	335	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	336	typedef ev_watcher_time *WT;
265		337
		338	#define ev_active(w) ((W)(w))->active
		339	#define ev_at(w) ((WT)(w))->at
		340
		341	#if EV_USE_MONOTONIC
		342	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		343	/* giving it a reasonably high chance of working on typical architetcures */
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	344	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		345	#endif
267		346
268	#ifdef _WIN32	347	#ifdef _WIN32
269	# include "ev_win32.c"	348	# include "ev_win32.c"
270	#endif	349	#endif
271		350
…		…
292	perror (msg);	371	perror (msg);
293	abort ();	372	abort ();
294	}	373	}
295	}	374	}
296		375
		376	static void *
		377	ev_realloc_emul (void *ptr, long size)
		378	{
		379	/* some systems, notably openbsd and darwin, fail to properly
		380	* implement realloc (x, 0) (as required by both ansi c-98 and
		381	* the single unix specification, so work around them here.
		382	*/
		383
		384	if (size)
		385	return realloc (ptr, size);
		386
		387	free (ptr);
		388	return 0;
		389	}
		390
297	static void *(*alloc)(void *ptr, long size);	391	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		392
299	void	393	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	394	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	395	{
302	alloc = cb;	396	alloc = cb;
303	}	397	}
304		398
305	inline_speed void *	399	inline_speed void *
306	ev_realloc (void *ptr, long size)	400	ev_realloc (void *ptr, long size)
307	{	401	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	402	ptr = alloc (ptr, size);
309		403
310	if (!ptr && size)	404	if (!ptr && size)
311	{	405	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	406	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	407	abort ();
…		…
336	W w;	430	W w;
337	int events;	431	int events;
338	} ANPENDING;	432	} ANPENDING;
339		433
340	#if EV_USE_INOTIFY	434	#if EV_USE_INOTIFY
		435	/* hash table entry per inotify-id */
341	typedef struct	436	typedef struct
342	{	437	{
343	WL head;	438	WL head;
344	} ANFS;	439	} ANFS;
		440	#endif
		441
		442	/* Heap Entry */
		443	#if EV_HEAP_CACHE_AT
		444	typedef struct {
		445	ev_tstamp at;
		446	WT w;
		447	} ANHE;
		448
		449	#define ANHE_w(he) (he).w /* access watcher, read-write */
		450	#define ANHE_at(he) (he).at /* access cached at, read-only */
		451	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */
		452	#else
		453	typedef WT ANHE;
		454
		455	#define ANHE_w(he) (he)
		456	#define ANHE_at(he) (he)->at
		457	#define ANHE_at_set(he)
345	#endif	458	#endif
346		459
347	#if EV_MULTIPLICITY	460	#if EV_MULTIPLICITY
348		461
349	struct ev_loop	462	struct ev_loop
…		…
407	{	520	{
408	return ev_rt_now;	521	return ev_rt_now;
409	}	522	}
410	#endif	523	#endif
411		524
		525	void
		526	ev_sleep (ev_tstamp delay)
		527	{
		528	if (delay > 0.)
		529	{
		530	#if EV_USE_NANOSLEEP
		531	struct timespec ts;
		532
		533	ts.tv_sec = (time_t)delay;
		534	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		535
		536	nanosleep (&ts, 0);
		537	#elif defined(_WIN32)
		538	Sleep ((unsigned long)(delay * 1e3));
		539	#else
		540	struct timeval tv;
		541
		542	tv.tv_sec = (time_t)delay;
		543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		544
		545	select (0, 0, 0, 0, &tv);
		546	#endif
		547	}
		548	}
		549
		550	/*****************************************************************************/
		551
		552	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		553
412	int inline_size	554	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	555	array_nextsize (int elem, int cur, int cnt)
414	{	556	{
415	int ncur = cur + 1;	557	int ncur = cur + 1;
416		558
417	do	559	do
418	ncur <<= 1;	560	ncur <<= 1;
419	while (cnt > ncur);	561	while (cnt > ncur);
420		562
421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	563	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422	if (elem * ncur > 4096)	564	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	565	{
424	ncur *= elem;	566	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	567	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	568	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	569	ncur /= elem;
428	}	570	}
429		571
430	return ncur;	572	return ncur;
…		…
533	{	675	{
534	int fd = fdchanges [i];	676	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	677	ANFD *anfd = anfds + fd;
536	ev_io *w;	678	ev_io *w;
537		679
538	int events = 0;	680	unsigned char events = 0;
539		681
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	682	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	683	events |= (unsigned char)w->events;
542		684
543	#if EV_SELECT_IS_WINSOCKET	685	#if EV_SELECT_IS_WINSOCKET
544	if (events)	686	if (events)
545	{	687	{
546	unsigned long argp;	688	unsigned long argp;
		689	#ifdef EV_FD_TO_WIN32_HANDLE
		690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		691	#else
547	anfd->handle = _get_osfhandle (fd);	692	anfd->handle = _get_osfhandle (fd);
		693	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	694	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
549	}	695	}
550	#endif	696	#endif
551		697
		698	{
		699	unsigned char o_events = anfd->events;
		700	unsigned char o_reify = anfd->reify;
		701
552	anfd->reify = 0;	702	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	703	anfd->events = events;
		704
		705	if (o_events != events || o_reify & EV_IOFDSET)
		706	backend_modify (EV_A_ fd, o_events, events);
		707	}
556	}	708	}
557		709
558	fdchangecnt = 0;	710	fdchangecnt = 0;
559	}	711	}
560		712
561	void inline_size	713	void inline_size
562	fd_change (EV_P_ int fd)	714	fd_change (EV_P_ int fd, int flags)
563	{	715	{
564	if (expect_false (anfds [fd].reify))	716	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	717	anfds [fd].reify |= flags;
568		718
		719	if (expect_true (!reify))
		720	{
569	++fdchangecnt;	721	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	722	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	723	fdchanges [fdchangecnt - 1] = fd;
		724	}
572	}	725	}
573		726
574	void inline_speed	727	void inline_speed
575	fd_kill (EV_P_ int fd)	728	fd_kill (EV_P_ int fd)
576	{	729	{
…		…
627		780
628	for (fd = 0; fd < anfdmax; ++fd)	781	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	782	if (anfds [fd].events)
630	{	783	{
631	anfds [fd].events = 0;	784	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	785	fd_change (EV_A_ fd, EV_IOFDSET | 1);
633	}	786	}
634	}	787	}
635		788
636	/*****************************************************************************/	789	/*****************************************************************************/
637		790
		791	/*
		792	* the heap functions want a real array index. array index 0 uis guaranteed to not
		793	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		794	* the branching factor of the d-tree.
		795	*/
		796
		797	/*
		798	* at the moment we allow libev the luxury of two heaps,
		799	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		800	* which is more cache-efficient.
		801	* the difference is about 5% with 50000+ watchers.
		802	*/
		803	#if EV_USE_4HEAP
		804
		805	#define DHEAP 4
		806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		807
		808	/* towards the root */
638	void inline_speed	809	void inline_speed
639	upheap (WT *heap, int k)	810	upheap (ANHE *heap, int k)
640	{	811	{
641	WT w = heap [k];	812	ANHE he = heap [k];
642		813
643	while (k)	814	for (;;)
644	{	815	{
645	int p = (k - 1) >> 1;	816	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
646		817
647	if (heap [p]->at <= w->at)	818	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
648	break;	819	break;
649		820
650	heap [k] = heap [p];	821	heap [k] = heap [p];
651	((W)heap [k])->active = k + 1;	822	ev_active (ANHE_w (heap [k])) = k;
652	k = p;	823	k = p;
653	}	824	}
654		825
		826	ev_active (ANHE_w (he)) = k;
655	heap [k] = w;	827	heap [k] = he;
656	((W)heap [k])->active = k + 1;
657
658	}	828	}
659		829
		830	/* away from the root */
660	void inline_speed	831	void inline_speed
661	downheap (WT *heap, int N, int k)	832	downheap (ANHE *heap, int N, int k)
662	{	833	{
663	WT w = heap [k];	834	ANHE he = heap [k];
		835	ANHE *E = heap + N + HEAP0;
664		836
665	for (;;)	837	for (;;)
666	{	838	{
667	int c = (k << 1) + 1;	839	ev_tstamp minat;
		840	ANHE *minpos;
		841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
668		842
669	if (c >= N)	843	// find minimum child
		844	if (expect_true (pos + DHEAP - 1 < E))
		845	{
		846	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		847	if (ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		848	if (ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		849	if (ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		850	}
		851	else if (pos < E)
		852	{
		853	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		854	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		855	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		856	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		857	}
		858	else
670	break;	859	break;
671		860
		861	if (ANHE_at (he) <= minat)
		862	break;
		863
		864	ev_active (ANHE_w (*minpos)) = k;
		865	heap [k] = *minpos;
		866
		867	k = minpos - heap;
		868	}
		869
		870	ev_active (ANHE_w (he)) = k;
		871	heap [k] = he;
		872	}
		873
		874	#else // 4HEAP
		875
		876	#define HEAP0 1
		877
		878	/* towards the root */
		879	void inline_speed
		880	upheap (ANHE *heap, int k)
		881	{
		882	ANHE he = heap [k];
		883
		884	for (;;)
		885	{
		886	int p = k >> 1;
		887
		888	/* maybe we could use a dummy element at heap [0]? */
		889	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
		890	break;
		891
		892	heap [k] = heap [p];
		893	ev_active (ANHE_w (heap [k])) = k;
		894	k = p;
		895	}
		896
		897	heap [k] = he;
		898	ev_active (ANHE_w (heap [k])) = k;
		899	}
		900
		901	/* away from the root */
		902	void inline_speed
		903	downheap (ANHE *heap, int N, int k)
		904	{
		905	ANHE he = heap [k];
		906
		907	for (;;)
		908	{
		909	int c = k << 1;
		910
		911	if (c > N)
		912	break;
		913
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at	914	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
673	? 1 : 0;	915	? 1 : 0;
674		916
675	if (w->at <= heap [c]->at)	917	if (ANHE_at (he) <= ANHE_at (heap [c]))
676	break;	918	break;
677		919
678	heap [k] = heap [c];	920	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;	921	ev_active (ANHE_w (heap [k])) = k;
680		922
681	k = c;	923	k = c;
682	}	924	}
683		925
684	heap [k] = w;	926	heap [k] = he;
685	((W)heap [k])->active = k + 1;	927	ev_active (ANHE_w (he)) = k;
686	}	928	}
		929	#endif
687		930
688	void inline_size	931	void inline_size
689	adjustheap (WT *heap, int N, int k)	932	adjustheap (ANHE *heap, int N, int k)
690	{	933	{
691	upheap (heap, k);	934	upheap (heap, k);
692	downheap (heap, N, k);	935	downheap (heap, N, k);
693	}	936	}
694		937
695	/*****************************************************************************/	938	/*****************************************************************************/
696		939
697	typedef struct	940	typedef struct
698	{	941	{
699	WL head;	942	WL head;
700	sig_atomic_t volatile gotsig;	943	EV_ATOMIC_T gotsig;
701	} ANSIG;	944	} ANSIG;
702		945
703	static ANSIG *signals;	946	static ANSIG *signals;
704	static int signalmax;	947	static int signalmax;
705		948
706	static int sigpipe [2];	949	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		950
710	void inline_size	951	void inline_size
711	signals_init (ANSIG *base, int count)	952	signals_init (ANSIG *base, int count)
712	{	953	{
713	while (count--)	954	while (count--)
…		…
717		958
718	++base;	959	++base;
719	}	960	}
720	}	961	}
721		962
722	static void	963	/*****************************************************************************/
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		964
773	void inline_speed	965	void inline_speed
774	fd_intern (int fd)	966	fd_intern (int fd)
775	{	967	{
776	#ifdef _WIN32	968	#ifdef _WIN32
…		…
781	fcntl (fd, F_SETFL, O_NONBLOCK);	973	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	974	#endif
783	}	975	}
784		976
785	static void noinline	977	static void noinline
786	siginit (EV_P)	978	evpipe_init (EV_P)
787	{	979	{
		980	if (!ev_is_active (&pipeev))
		981	{
		982	#if EV_USE_EVENTFD
		983	if ((evfd = eventfd (0, 0)) >= 0)
		984	{
		985	evpipe [0] = -1;
		986	fd_intern (evfd);
		987	ev_io_set (&pipeev, evfd, EV_READ);
		988	}
		989	else
		990	#endif
		991	{
		992	while (pipe (evpipe))
		993	syserr ("(libev) error creating signal/async pipe");
		994
788	fd_intern (sigpipe [0]);	995	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	996	fd_intern (evpipe [1]);
		997	ev_io_set (&pipeev, evpipe [0], EV_READ);
		998	}
790		999
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	1000	ev_io_start (EV_A_ &pipeev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	1001	ev_unref (EV_A); /* watcher should not keep loop alive */
		1002	}
		1003	}
		1004
		1005	void inline_size
		1006	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1007	{
		1008	if (!*flag)
		1009	{
		1010	int old_errno = errno; /* save errno because write might clobber it */
		1011
		1012	*flag = 1;
		1013
		1014	#if EV_USE_EVENTFD
		1015	if (evfd >= 0)
		1016	{
		1017	uint64_t counter = 1;
		1018	write (evfd, &counter, sizeof (uint64_t));
		1019	}
		1020	else
		1021	#endif
		1022	write (evpipe [1], &old_errno, 1);
		1023
		1024	errno = old_errno;
		1025	}
		1026	}
		1027
		1028	static void
		1029	pipecb (EV_P_ ev_io *iow, int revents)
		1030	{
		1031	#if EV_USE_EVENTFD
		1032	if (evfd >= 0)
		1033	{
		1034	uint64_t counter;
		1035	read (evfd, &counter, sizeof (uint64_t));
		1036	}
		1037	else
		1038	#endif
		1039	{
		1040	char dummy;
		1041	read (evpipe [0], &dummy, 1);
		1042	}
		1043
		1044	if (gotsig && ev_is_default_loop (EV_A))
		1045	{
		1046	int signum;
		1047	gotsig = 0;
		1048
		1049	for (signum = signalmax; signum--; )
		1050	if (signals [signum].gotsig)
		1051	ev_feed_signal_event (EV_A_ signum + 1);
		1052	}
		1053
		1054	#if EV_ASYNC_ENABLE
		1055	if (gotasync)
		1056	{
		1057	int i;
		1058	gotasync = 0;
		1059
		1060	for (i = asynccnt; i--; )
		1061	if (asyncs [i]->sent)
		1062	{
		1063	asyncs [i]->sent = 0;
		1064	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1065	}
		1066	}
		1067	#endif
794	}	1068	}
795		1069
796	/*****************************************************************************/	1070	/*****************************************************************************/
797		1071
		1072	static void
		1073	ev_sighandler (int signum)
		1074	{
		1075	#if EV_MULTIPLICITY
		1076	struct ev_loop *loop = &default_loop_struct;
		1077	#endif
		1078
		1079	#if _WIN32
		1080	signal (signum, ev_sighandler);
		1081	#endif
		1082
		1083	signals [signum - 1].gotsig = 1;
		1084	evpipe_write (EV_A_ &gotsig);
		1085	}
		1086
		1087	void noinline
		1088	ev_feed_signal_event (EV_P_ int signum)
		1089	{
		1090	WL w;
		1091
		1092	#if EV_MULTIPLICITY
		1093	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1094	#endif
		1095
		1096	--signum;
		1097
		1098	if (signum < 0 || signum >= signalmax)
		1099	return;
		1100
		1101	signals [signum].gotsig = 0;
		1102
		1103	for (w = signals [signum].head; w; w = w->next)
		1104	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1105	}
		1106
		1107	/*****************************************************************************/
		1108
798	static ev_child *childs [EV_PID_HASHSIZE];	1109	static WL childs [EV_PID_HASHSIZE];
799		1110
800	#ifndef _WIN32	1111	#ifndef _WIN32
801		1112
802	static ev_signal childev;	1113	static ev_signal childev;
803		1114
		1115	#ifndef WIFCONTINUED
		1116	# define WIFCONTINUED(status) 0
		1117	#endif
		1118
804	void inline_speed	1119	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1120	child_reap (EV_P_ int chain, int pid, int status)
806	{	1121	{
807	ev_child *w;	1122	ev_child *w;
		1123	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1124
809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1125	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1126	{
810	if (w->pid == pid || !w->pid)	1127	if ((w->pid == pid || !w->pid)
		1128	&& (!traced || (w->flags & 1)))
811	{	1129	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1130	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;	1131	w->rpid = pid;
814	w->rstatus = status;	1132	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1133	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1134	}
		1135	}
817	}	1136	}
818		1137
819	#ifndef WCONTINUED	1138	#ifndef WCONTINUED
820	# define WCONTINUED 0	1139	# define WCONTINUED 0
821	#endif	1140	#endif
…		…
830	if (!WCONTINUED	1149	if (!WCONTINUED
831	|| errno != EINVAL	1150	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1151	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1152	return;
834		1153
835	/* make sure we are called again until all childs have been reaped */	1154	/* 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 */	1155	/* 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);	1156	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1157
839	child_reap (EV_A_ sw, pid, pid, status);	1158	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1159	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 */	1160	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1161	}
843		1162
844	#endif	1163	#endif
845		1164
846	/*****************************************************************************/	1165	/*****************************************************************************/
…		…
918	}	1237	}
919		1238
920	unsigned int	1239	unsigned int
921	ev_embeddable_backends (void)	1240	ev_embeddable_backends (void)
922	{	1241	{
923	return EVBACKEND_EPOLL	1242	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1243
925	| EVBACKEND_PORT;	1244	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1245	/* please fix it and tell me how to detect the fix */
		1246	flags &= ~EVBACKEND_EPOLL;
		1247
		1248	return flags;
926	}	1249	}
927		1250
928	unsigned int	1251	unsigned int
929	ev_backend (EV_P)	1252	ev_backend (EV_P)
930	{	1253	{
…		…
933		1256
934	unsigned int	1257	unsigned int
935	ev_loop_count (EV_P)	1258	ev_loop_count (EV_P)
936	{	1259	{
937	return loop_count;	1260	return loop_count;
		1261	}
		1262
		1263	void
		1264	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1265	{
		1266	io_blocktime = interval;
		1267	}
		1268
		1269	void
		1270	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1271	{
		1272	timeout_blocktime = interval;
938	}	1273	}
939		1274
940	static void noinline	1275	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1276	loop_init (EV_P_ unsigned int flags)
942	{	1277	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1284	have_monotonic = 1;
950	}	1285	}
951	#endif	1286	#endif
952		1287
953	ev_rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1289	mn_now = get_clock ();
955	now_floor = mn_now;	1290	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1291	rtmn_diff = ev_rt_now - mn_now;
		1292
		1293	io_blocktime = 0.;
		1294	timeout_blocktime = 0.;
		1295	backend = 0;
		1296	backend_fd = -1;
		1297	gotasync = 0;
		1298	#if EV_USE_INOTIFY
		1299	fs_fd = -2;
		1300	#endif
957		1301
958	/* pid check not overridable via env */	1302	/* pid check not overridable via env */
959	#ifndef _WIN32	1303	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1304	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1305	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1308	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1309	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1310	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1311	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1312
969	if (!(flags & 0x0000ffffUL))	1313	if (!(flags & 0x0000ffffU))
970	flags |= ev_recommended_backends ();	1314	flags |= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1315
978	#if EV_USE_PORT	1316	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1317	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1318	#endif
981	#if EV_USE_KQUEUE	1319	#if EV_USE_KQUEUE
…		…
989	#endif	1327	#endif
990	#if EV_USE_SELECT	1328	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1329	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1330	#endif
993		1331
994	ev_init (&sigev, sigcb);	1332	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1333	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1334	}
997	}	1335	}
998		1336
999	static void noinline	1337	static void noinline
1000	loop_destroy (EV_P)	1338	loop_destroy (EV_P)
1001	{	1339	{
1002	int i;	1340	int i;
		1341
		1342	if (ev_is_active (&pipeev))
		1343	{
		1344	ev_ref (EV_A); /* signal watcher */
		1345	ev_io_stop (EV_A_ &pipeev);
		1346
		1347	#if EV_USE_EVENTFD
		1348	if (evfd >= 0)
		1349	close (evfd);
		1350	#endif
		1351
		1352	if (evpipe [0] >= 0)
		1353	{
		1354	close (evpipe [0]);
		1355	close (evpipe [1]);
		1356	}
		1357	}
1003		1358
1004	#if EV_USE_INOTIFY	1359	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1360	if (fs_fd >= 0)
1006	close (fs_fd);	1361	close (fs_fd);
1007	#endif	1362	#endif
…		…
1030	array_free (pending, [i]);	1385	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1386	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1387	array_free (idle, [i]);
1033	#endif	1388	#endif
1034	}	1389	}
		1390
		1391	ev_free (anfds); anfdmax = 0;
1035		1392
1036	/* have to use the microsoft-never-gets-it-right macro */	1393	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1394	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1395	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1396	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1397	array_free (periodic, EMPTY);
1041	#endif	1398	#endif
		1399	#if EV_FORK_ENABLE
		1400	array_free (fork, EMPTY);
		1401	#endif
1042	array_free (prepare, EMPTY);	1402	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1403	array_free (check, EMPTY);
		1404	#if EV_ASYNC_ENABLE
		1405	array_free (async, EMPTY);
		1406	#endif
1044		1407
1045	backend = 0;	1408	backend = 0;
1046	}	1409	}
1047		1410
		1411	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	1412	void inline_size infy_fork (EV_P);
		1413	#endif
1049		1414
1050	void inline_size	1415	void inline_size
1051	loop_fork (EV_P)	1416	loop_fork (EV_P)
1052	{	1417	{
1053	#if EV_USE_PORT	1418	#if EV_USE_PORT
…		…
1061	#endif	1426	#endif
1062	#if EV_USE_INOTIFY	1427	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1428	infy_fork (EV_A);
1064	#endif	1429	#endif
1065		1430
1066	if (ev_is_active (&sigev))	1431	if (ev_is_active (&pipeev))
1067	{	1432	{
1068	/* default loop */	1433	/* this "locks" the handlers against writing to the pipe */
		1434	/* while we modify the fd vars */
		1435	gotsig = 1;
		1436	#if EV_ASYNC_ENABLE
		1437	gotasync = 1;
		1438	#endif
1069		1439
1070	ev_ref (EV_A);	1440	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1441	ev_io_stop (EV_A_ &pipeev);
		1442
		1443	#if EV_USE_EVENTFD
		1444	if (evfd >= 0)
		1445	close (evfd);
		1446	#endif
		1447
		1448	if (evpipe [0] >= 0)
		1449	{
1072	close (sigpipe [0]);	1450	close (evpipe [0]);
1073	close (sigpipe [1]);	1451	close (evpipe [1]);
		1452	}
1074		1453
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1454	evpipe_init (EV_A);
		1455	/* now iterate over everything, in case we missed something */
		1456	pipecb (EV_A_ &pipeev, EV_READ);
1079	}	1457	}
1080		1458
1081	postfork = 0;	1459	postfork = 0;
1082	}	1460	}
1083		1461
…		…
1105	}	1483	}
1106		1484
1107	void	1485	void
1108	ev_loop_fork (EV_P)	1486	ev_loop_fork (EV_P)
1109	{	1487	{
1110	postfork = 1;	1488	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1489	}
1112
1113	#endif	1490	#endif
1114		1491
1115	#if EV_MULTIPLICITY	1492	#if EV_MULTIPLICITY
1116	struct ev_loop *	1493	struct ev_loop *
1117	ev_default_loop_init (unsigned int flags)	1494	ev_default_loop_init (unsigned int flags)
1118	#else	1495	#else
1119	int	1496	int
1120	ev_default_loop (unsigned int flags)	1497	ev_default_loop (unsigned int flags)
1121	#endif	1498	#endif
1122	{	1499	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1500	if (!ev_default_loop_ptr)
1128	{	1501	{
1129	#if EV_MULTIPLICITY	1502	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1503	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1504	#else
…		…
1134		1507
1135	loop_init (EV_A_ flags);	1508	loop_init (EV_A_ flags);
1136		1509
1137	if (ev_backend (EV_A))	1510	if (ev_backend (EV_A))
1138	{	1511	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1512	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1513	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1514	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1515	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1516	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1533	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1534	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1535	ev_signal_stop (EV_A_ &childev);
1165	#endif	1536	#endif
1166		1537
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);	1538	loop_destroy (EV_A);
1174	}	1539	}
1175		1540
1176	void	1541	void
1177	ev_default_fork (void)	1542	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1544	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1545	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1546	#endif
1182		1547
1183	if (backend)	1548	if (backend)
1184	postfork = 1;	1549	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1550	}
1186		1551
1187	/*****************************************************************************/	1552	/*****************************************************************************/
1188		1553
1189	void	1554	void
…		…
1209	p->w->pending = 0;	1574	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	1575	EV_CB_INVOKE (p->w, p->events);
1211	}	1576	}
1212	}	1577	}
1213	}	1578	}
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 = 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 ((WT *)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 = 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 ((WT *)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 ((WT *)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 = 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 ((WT *)periodics, periodiccnt, i);
1292	}
1293	#endif
1294		1579
1295	#if EV_IDLE_ENABLE	1580	#if EV_IDLE_ENABLE
1296	void inline_size	1581	void inline_size
1297	idle_reify (EV_P)	1582	idle_reify (EV_P)
1298	{	1583	{
…		…
1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1595	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311	break;	1596	break;
1312	}	1597	}
1313	}	1598	}
1314	}	1599	}
		1600	}
		1601	#endif
		1602
		1603	void inline_size
		1604	timers_reify (EV_P)
		1605	{
		1606	while (timercnt && ANHE_at (timers [HEAP0]) <= mn_now)
		1607	{
		1608	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1609
		1610	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1611
		1612	/* first reschedule or stop timer */
		1613	if (w->repeat)
		1614	{
		1615	ev_at (w) += w->repeat;
		1616	if (ev_at (w) < mn_now)
		1617	ev_at (w) = mn_now;
		1618
		1619	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1620
		1621	ANHE_at_set (timers [HEAP0]);
		1622	downheap (timers, timercnt, HEAP0);
		1623	}
		1624	else
		1625	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1626
		1627	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1628	}
		1629	}
		1630
		1631	#if EV_PERIODIC_ENABLE
		1632	void inline_size
		1633	periodics_reify (EV_P)
		1634	{
		1635	while (periodiccnt && ANHE_at (periodics [HEAP0]) <= ev_rt_now)
		1636	{
		1637	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1638
		1639	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1640
		1641	/* first reschedule or stop timer */
		1642	if (w->reschedule_cb)
		1643	{
		1644	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1645
		1646	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
		1647
		1648	ANHE_at_set (periodics [HEAP0]);
		1649	downheap (periodics, periodiccnt, HEAP0);
		1650	}
		1651	else if (w->interval)
		1652	{
		1653	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1654	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
		1655
		1656	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
		1657
		1658	ANHE_at_set (periodics [HEAP0]);
		1659	downheap (periodics, periodiccnt, HEAP0);
		1660	}
		1661	else
		1662	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1663
		1664	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1665	}
		1666	}
		1667
		1668	static void noinline
		1669	periodics_reschedule (EV_P)
		1670	{
		1671	int i;
		1672
		1673	/* adjust periodics after time jump */
		1674	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1675	{
		1676	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1677
		1678	if (w->reschedule_cb)
		1679	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1680	else if (w->interval)
		1681	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1682
		1683	ANHE_at_set (periodics [i]);
		1684	}
		1685
		1686	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */
		1687	/* also, this is easy and corretc for both 2-heaps and 4-heaps */
		1688	for (i = 0; i < periodiccnt; ++i)
		1689	upheap (periodics, i + HEAP0);
1315	}	1690	}
1316	#endif	1691	#endif
1317		1692
1318	void inline_speed	1693	void inline_speed
1319	time_update (EV_P_ ev_tstamp max_block)	1694	time_update (EV_P_ ev_tstamp max_block)
…		…
1348	*/	1723	*/
1349	for (i = 4; --i; )	1724	for (i = 4; --i; )
1350	{	1725	{
1351	rtmn_diff = ev_rt_now - mn_now;	1726	rtmn_diff = ev_rt_now - mn_now;
1352		1727
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1728	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	1729	return; /* all is well */
1355		1730
1356	ev_rt_now = ev_time ();	1731	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	1732	mn_now = get_clock ();
1358	now_floor = mn_now;	1733	now_floor = mn_now;
…		…
1374	#if EV_PERIODIC_ENABLE	1749	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	1750	periodics_reschedule (EV_A);
1376	#endif	1751	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */	1752	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)	1753	for (i = 0; i < timercnt; ++i)
		1754	{
		1755	ANHE *he = timers + i + HEAP0;
1379	((WT)timers [i])->at += ev_rt_now - mn_now;	1756	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1757	ANHE_at_set (*he);
		1758	}
1380	}	1759	}
1381		1760
1382	mn_now = ev_rt_now;	1761	mn_now = ev_rt_now;
1383	}	1762	}
1384	}	1763	}
…		…
1398	static int loop_done;	1777	static int loop_done;
1399		1778
1400	void	1779	void
1401	ev_loop (EV_P_ int flags)	1780	ev_loop (EV_P_ int flags)
1402	{	1781	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1782	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1783
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1784	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1785
1409	do	1786	do
1410	{	1787	{
…		…
1444	/* update fd-related kernel structures */	1821	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1822	fd_reify (EV_A);
1446		1823
1447	/* calculate blocking time */	1824	/* calculate blocking time */
1448	{	1825	{
1449	ev_tstamp block;	1826	ev_tstamp waittime = 0.;
		1827	ev_tstamp sleeptime = 0.;
1450		1828
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1829	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1830	{
1455	/* update time to cancel out callback processing overhead */	1831	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1832	time_update (EV_A_ 1e100);
1457		1833
1458	block = MAX_BLOCKTIME;	1834	waittime = MAX_BLOCKTIME;
1459		1835
1460	if (timercnt)	1836	if (timercnt)
1461	{	1837	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1838	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463	if (block > to) block = to;	1839	if (waittime > to) waittime = to;
1464	}	1840	}
1465		1841
1466	#if EV_PERIODIC_ENABLE	1842	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1843	if (periodiccnt)
1468	{	1844	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1845	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	1846	if (waittime > to) waittime = to;
1471	}	1847	}
1472	#endif	1848	#endif
1473		1849
1474	if (expect_false (block < 0.)) block = 0.;	1850	if (expect_false (waittime < timeout_blocktime))
		1851	waittime = timeout_blocktime;
		1852
		1853	sleeptime = waittime - backend_fudge;
		1854
		1855	if (expect_true (sleeptime > io_blocktime))
		1856	sleeptime = io_blocktime;
		1857
		1858	if (sleeptime)
		1859	{
		1860	ev_sleep (sleeptime);
		1861	waittime -= sleeptime;
		1862	}
1475	}	1863	}
1476		1864
1477	++loop_count;	1865	++loop_count;
1478	backend_poll (EV_A_ block);	1866	backend_poll (EV_A_ waittime);
1479		1867
1480	/* update ev_rt_now, do magic */	1868	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	1869	time_update (EV_A_ waittime + sleeptime);
1482	}	1870	}
1483		1871
1484	/* queue pending timers and reschedule them */	1872	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	1873	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	1874	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	1883	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	1884	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1885	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		1886
1499	call_pending (EV_A);	1887	call_pending (EV_A);
1500
1501	}	1888	}
1502	while (expect_true (activecnt && !loop_done));	1889	while (expect_true (
		1890	activecnt
		1891	&& !loop_done
		1892	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1893	));
1503		1894
1504	if (loop_done == EVUNLOOP_ONE)	1895	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	1896	loop_done = EVUNLOOP_CANCEL;
1506	}	1897	}
1507		1898
…		…
1598		1989
1599	assert (("ev_io_start called with negative fd", fd >= 0));	1990	assert (("ev_io_start called with negative fd", fd >= 0));
1600		1991
1601	ev_start (EV_A_ (W)w, 1);	1992	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1993	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1994	wlist_add (&anfds[fd].head, (WL)w);
1604		1995
1605	fd_change (EV_A_ fd);	1996	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1997	w->events &= ~EV_IOFDSET;
1606	}	1998	}
1607		1999
1608	void noinline	2000	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	2001	ev_io_stop (EV_P_ ev_io *w)
1610	{	2002	{
1611	clear_pending (EV_A_ (W)w);	2003	clear_pending (EV_A_ (W)w);
1612	if (expect_false (!ev_is_active (w)))	2004	if (expect_false (!ev_is_active (w)))
1613	return;	2005	return;
1614		2006
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2007	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		2008
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2009	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	2010	ev_stop (EV_A_ (W)w);
1619		2011
1620	fd_change (EV_A_ w->fd);	2012	fd_change (EV_A_ w->fd, 1);
1621	}	2013	}
1622		2014
1623	void noinline	2015	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	2016	ev_timer_start (EV_P_ ev_timer *w)
1625	{	2017	{
1626	if (expect_false (ev_is_active (w)))	2018	if (expect_false (ev_is_active (w)))
1627	return;	2019	return;
1628		2020
1629	((WT)w)->at += mn_now;	2021	ev_at (w) += mn_now;
1630		2022
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2023	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		2024
1633	ev_start (EV_A_ (W)w, ++timercnt);	2025	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2026	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1635	timers [timercnt - 1] = w;	2027	ANHE_w (timers [ev_active (w)]) = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	2028	ANHE_at_set (timers [ev_active (w)]);
		2029	upheap (timers, ev_active (w));
1637		2030
1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2031	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1639	}	2032	}
1640		2033
1641	void noinline	2034	void noinline
1642	ev_timer_stop (EV_P_ ev_timer *w)	2035	ev_timer_stop (EV_P_ ev_timer *w)
1643	{	2036	{
1644	clear_pending (EV_A_ (W)w);	2037	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	2038	if (expect_false (!ev_is_active (w)))
1646	return;	2039	return;
1647		2040
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1649
1650	{	2041	{
1651	int active = ((W)w)->active;	2042	int active = ev_active (w);
1652		2043
		2044	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2045
1653	if (expect_true (--active < --timercnt))	2046	if (expect_true (active < timercnt + HEAP0 - 1))
1654	{	2047	{
1655	timers [active] = timers [timercnt];	2048	timers [active] = timers [timercnt + HEAP0 - 1];
1656	adjustheap ((WT *)timers, timercnt, active);	2049	adjustheap (timers, timercnt, active);
1657	}	2050	}
		2051
		2052	--timercnt;
1658	}	2053	}
1659		2054
1660	((WT)w)->at -= mn_now;	2055	ev_at (w) -= mn_now;
1661		2056
1662	ev_stop (EV_A_ (W)w);	2057	ev_stop (EV_A_ (W)w);
1663	}	2058	}
1664		2059
1665	void noinline	2060	void noinline
…		…
1667	{	2062	{
1668	if (ev_is_active (w))	2063	if (ev_is_active (w))
1669	{	2064	{
1670	if (w->repeat)	2065	if (w->repeat)
1671	{	2066	{
1672	((WT)w)->at = mn_now + w->repeat;	2067	ev_at (w) = mn_now + w->repeat;
		2068	ANHE_at_set (timers [ev_active (w)]);
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2069	adjustheap (timers, timercnt, ev_active (w));
1674	}	2070	}
1675	else	2071	else
1676	ev_timer_stop (EV_A_ w);	2072	ev_timer_stop (EV_A_ w);
1677	}	2073	}
1678	else if (w->repeat)	2074	else if (w->repeat)
1679	{	2075	{
1680	w->at = w->repeat;	2076	ev_at (w) = w->repeat;
1681	ev_timer_start (EV_A_ w);	2077	ev_timer_start (EV_A_ w);
1682	}	2078	}
1683	}	2079	}
1684		2080
1685	#if EV_PERIODIC_ENABLE	2081	#if EV_PERIODIC_ENABLE
…		…
1688	{	2084	{
1689	if (expect_false (ev_is_active (w)))	2085	if (expect_false (ev_is_active (w)))
1690	return;	2086	return;
1691		2087
1692	if (w->reschedule_cb)	2088	if (w->reschedule_cb)
1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2089	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1694	else if (w->interval)	2090	else if (w->interval)
1695	{	2091	{
1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2092	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1697	/* this formula differs from the one in periodic_reify because we do not always round up */	2093	/* this formula differs from the one in periodic_reify because we do not always round up */
1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2094	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699	}	2095	}
1700	else	2096	else
1701	((WT)w)->at = w->offset;	2097	ev_at (w) = w->offset;
1702		2098
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	2099	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2100	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	2101	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	2102	ANHE_at_set (periodics [ev_active (w)]);
		2103	upheap (periodics, ev_active (w));
1707		2104
1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2105	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1709	}	2106	}
1710		2107
1711	void noinline	2108	void noinline
1712	ev_periodic_stop (EV_P_ ev_periodic *w)	2109	ev_periodic_stop (EV_P_ ev_periodic *w)
1713	{	2110	{
1714	clear_pending (EV_A_ (W)w);	2111	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	2112	if (expect_false (!ev_is_active (w)))
1716	return;	2113	return;
1717		2114
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1719
1720	{	2115	{
1721	int active = ((W)w)->active;	2116	int active = ev_active (w);
1722		2117
		2118	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2119
1723	if (expect_true (--active < --periodiccnt))	2120	if (expect_true (active < periodiccnt + HEAP0 - 1))
1724	{	2121	{
1725	periodics [active] = periodics [periodiccnt];	2122	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	2123	adjustheap (periodics, periodiccnt, active);
1727	}	2124	}
		2125
		2126	--periodiccnt;
1728	}	2127	}
1729		2128
1730	ev_stop (EV_A_ (W)w);	2129	ev_stop (EV_A_ (W)w);
1731	}	2130	}
1732		2131
…		…
1751	#endif	2150	#endif
1752	if (expect_false (ev_is_active (w)))	2151	if (expect_false (ev_is_active (w)))
1753	return;	2152	return;
1754		2153
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2154	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2155
		2156	evpipe_init (EV_A);
1756		2157
1757	{	2158	{
1758	#ifndef _WIN32	2159	#ifndef _WIN32
1759	sigset_t full, prev;	2160	sigset_t full, prev;
1760	sigfillset (&full);	2161	sigfillset (&full);
…		…
1767	sigprocmask (SIG_SETMASK, &prev, 0);	2168	sigprocmask (SIG_SETMASK, &prev, 0);
1768	#endif	2169	#endif
1769	}	2170	}
1770		2171
1771	ev_start (EV_A_ (W)w, 1);	2172	ev_start (EV_A_ (W)w, 1);
1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2173	wlist_add (&signals [w->signum - 1].head, (WL)w);
1773		2174
1774	if (!((WL)w)->next)	2175	if (!((WL)w)->next)
1775	{	2176	{
1776	#if _WIN32	2177	#if _WIN32
1777	signal (w->signum, sighandler);	2178	signal (w->signum, ev_sighandler);
1778	#else	2179	#else
1779	struct sigaction sa;	2180	struct sigaction sa;
1780	sa.sa_handler = sighandler;	2181	sa.sa_handler = ev_sighandler;
1781	sigfillset (&sa.sa_mask);	2182	sigfillset (&sa.sa_mask);
1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2183	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1783	sigaction (w->signum, &sa, 0);	2184	sigaction (w->signum, &sa, 0);
1784	#endif	2185	#endif
1785	}	2186	}
…		…
1790	{	2191	{
1791	clear_pending (EV_A_ (W)w);	2192	clear_pending (EV_A_ (W)w);
1792	if (expect_false (!ev_is_active (w)))	2193	if (expect_false (!ev_is_active (w)))
1793	return;	2194	return;
1794		2195
1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2196	wlist_del (&signals [w->signum - 1].head, (WL)w);
1796	ev_stop (EV_A_ (W)w);	2197	ev_stop (EV_A_ (W)w);
1797		2198
1798	if (!signals [w->signum - 1].head)	2199	if (!signals [w->signum - 1].head)
1799	signal (w->signum, SIG_DFL);	2200	signal (w->signum, SIG_DFL);
1800	}	2201	}
…		…
1807	#endif	2208	#endif
1808	if (expect_false (ev_is_active (w)))	2209	if (expect_false (ev_is_active (w)))
1809	return;	2210	return;
1810		2211
1811	ev_start (EV_A_ (W)w, 1);	2212	ev_start (EV_A_ (W)w, 1);
1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2213	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1813	}	2214	}
1814		2215
1815	void	2216	void
1816	ev_child_stop (EV_P_ ev_child *w)	2217	ev_child_stop (EV_P_ ev_child *w)
1817	{	2218	{
1818	clear_pending (EV_A_ (W)w);	2219	clear_pending (EV_A_ (W)w);
1819	if (expect_false (!ev_is_active (w)))	2220	if (expect_false (!ev_is_active (w)))
1820	return;	2221	return;
1821		2222
1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2223	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823	ev_stop (EV_A_ (W)w);	2224	ev_stop (EV_A_ (W)w);
1824	}	2225	}
1825		2226
1826	#if EV_STAT_ENABLE	2227	#if EV_STAT_ENABLE
1827		2228
…		…
1846	if (w->wd < 0)	2247	if (w->wd < 0)
1847	{	2248	{
1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2249	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1849		2250
1850	/* monitor some parent directory for speedup hints */	2251	/* monitor some parent directory for speedup hints */
		2252	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2253	/* but an efficiency issue only */
1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2254	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1852	{	2255	{
1853	char path [4096];	2256	char path [4096];
1854	strcpy (path, w->path);	2257	strcpy (path, w->path);
1855		2258
…		…
2100	clear_pending (EV_A_ (W)w);	2503	clear_pending (EV_A_ (W)w);
2101	if (expect_false (!ev_is_active (w)))	2504	if (expect_false (!ev_is_active (w)))
2102	return;	2505	return;
2103		2506
2104	{	2507	{
2105	int active = ((W)w)->active;	2508	int active = ev_active (w);
2106		2509
2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2510	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2108	((W)idles [ABSPRI (w)][active - 1])->active = active;	2511	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2109		2512
2110	ev_stop (EV_A_ (W)w);	2513	ev_stop (EV_A_ (W)w);
2111	--idleall;	2514	--idleall;
2112	}	2515	}
2113	}	2516	}
…		…
2130	clear_pending (EV_A_ (W)w);	2533	clear_pending (EV_A_ (W)w);
2131	if (expect_false (!ev_is_active (w)))	2534	if (expect_false (!ev_is_active (w)))
2132	return;	2535	return;
2133		2536
2134	{	2537	{
2135	int active = ((W)w)->active;	2538	int active = ev_active (w);
		2539
2136	prepares [active - 1] = prepares [--preparecnt];	2540	prepares [active - 1] = prepares [--preparecnt];
2137	((W)prepares [active - 1])->active = active;	2541	ev_active (prepares [active - 1]) = active;
2138	}	2542	}
2139		2543
2140	ev_stop (EV_A_ (W)w);	2544	ev_stop (EV_A_ (W)w);
2141	}	2545	}
2142		2546
…		…
2157	clear_pending (EV_A_ (W)w);	2561	clear_pending (EV_A_ (W)w);
2158	if (expect_false (!ev_is_active (w)))	2562	if (expect_false (!ev_is_active (w)))
2159	return;	2563	return;
2160		2564
2161	{	2565	{
2162	int active = ((W)w)->active;	2566	int active = ev_active (w);
		2567
2163	checks [active - 1] = checks [--checkcnt];	2568	checks [active - 1] = checks [--checkcnt];
2164	((W)checks [active - 1])->active = active;	2569	ev_active (checks [active - 1]) = active;
2165	}	2570	}
2166		2571
2167	ev_stop (EV_A_ (W)w);	2572	ev_stop (EV_A_ (W)w);
2168	}	2573	}
2169		2574
2170	#if EV_EMBED_ENABLE	2575	#if EV_EMBED_ENABLE
2171	void noinline	2576	void noinline
2172	ev_embed_sweep (EV_P_ ev_embed *w)	2577	ev_embed_sweep (EV_P_ ev_embed *w)
2173	{	2578	{
2174	ev_loop (w->loop, EVLOOP_NONBLOCK);	2579	ev_loop (w->other, EVLOOP_NONBLOCK);
2175	}	2580	}
2176		2581
2177	static void	2582	static void
2178	embed_cb (EV_P_ ev_io *io, int revents)	2583	embed_io_cb (EV_P_ ev_io *io, int revents)
2179	{	2584	{
2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2585	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2181		2586
2182	if (ev_cb (w))	2587	if (ev_cb (w))
2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2588	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184	else	2589	else
2185	ev_embed_sweep (loop, w);	2590	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	2591	}
		2592
		2593	static void
		2594	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2595	{
		2596	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2597
		2598	{
		2599	struct ev_loop *loop = w->other;
		2600
		2601	while (fdchangecnt)
		2602	{
		2603	fd_reify (EV_A);
		2604	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2605	}
		2606	}
		2607	}
		2608
		2609	#if 0
		2610	static void
		2611	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2612	{
		2613	ev_idle_stop (EV_A_ idle);
		2614	}
		2615	#endif
2187		2616
2188	void	2617	void
2189	ev_embed_start (EV_P_ ev_embed *w)	2618	ev_embed_start (EV_P_ ev_embed *w)
2190	{	2619	{
2191	if (expect_false (ev_is_active (w)))	2620	if (expect_false (ev_is_active (w)))
2192	return;	2621	return;
2193		2622
2194	{	2623	{
2195	struct ev_loop *loop = w->loop;	2624	struct ev_loop *loop = w->other;
2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2625	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2626	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198	}	2627	}
2199		2628
2200	ev_set_priority (&w->io, ev_priority (w));	2629	ev_set_priority (&w->io, ev_priority (w));
2201	ev_io_start (EV_A_ &w->io);	2630	ev_io_start (EV_A_ &w->io);
		2631
		2632	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2633	ev_set_priority (&w->prepare, EV_MINPRI);
		2634	ev_prepare_start (EV_A_ &w->prepare);
		2635
		2636	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2202		2637
2203	ev_start (EV_A_ (W)w, 1);	2638	ev_start (EV_A_ (W)w, 1);
2204	}	2639	}
2205		2640
2206	void	2641	void
…		…
2209	clear_pending (EV_A_ (W)w);	2644	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2645	if (expect_false (!ev_is_active (w)))
2211	return;	2646	return;
2212		2647
2213	ev_io_stop (EV_A_ &w->io);	2648	ev_io_stop (EV_A_ &w->io);
		2649	ev_prepare_stop (EV_A_ &w->prepare);
2214		2650
2215	ev_stop (EV_A_ (W)w);	2651	ev_stop (EV_A_ (W)w);
2216	}	2652	}
2217	#endif	2653	#endif
2218		2654
…		…
2234	clear_pending (EV_A_ (W)w);	2670	clear_pending (EV_A_ (W)w);
2235	if (expect_false (!ev_is_active (w)))	2671	if (expect_false (!ev_is_active (w)))
2236	return;	2672	return;
2237		2673
2238	{	2674	{
2239	int active = ((W)w)->active;	2675	int active = ev_active (w);
		2676
2240	forks [active - 1] = forks [--forkcnt];	2677	forks [active - 1] = forks [--forkcnt];
2241	((W)forks [active - 1])->active = active;	2678	ev_active (forks [active - 1]) = active;
2242	}	2679	}
2243		2680
2244	ev_stop (EV_A_ (W)w);	2681	ev_stop (EV_A_ (W)w);
		2682	}
		2683	#endif
		2684
		2685	#if EV_ASYNC_ENABLE
		2686	void
		2687	ev_async_start (EV_P_ ev_async *w)
		2688	{
		2689	if (expect_false (ev_is_active (w)))
		2690	return;
		2691
		2692	evpipe_init (EV_A);
		2693
		2694	ev_start (EV_A_ (W)w, ++asynccnt);
		2695	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2696	asyncs [asynccnt - 1] = w;
		2697	}
		2698
		2699	void
		2700	ev_async_stop (EV_P_ ev_async *w)
		2701	{
		2702	clear_pending (EV_A_ (W)w);
		2703	if (expect_false (!ev_is_active (w)))
		2704	return;
		2705
		2706	{
		2707	int active = ev_active (w);
		2708
		2709	asyncs [active - 1] = asyncs [--asynccnt];
		2710	ev_active (asyncs [active - 1]) = active;
		2711	}
		2712
		2713	ev_stop (EV_A_ (W)w);
		2714	}
		2715
		2716	void
		2717	ev_async_send (EV_P_ ev_async *w)
		2718	{
		2719	w->sent = 1;
		2720	evpipe_write (EV_A_ &gotasync);
2245	}	2721	}
2246	#endif	2722	#endif
2247		2723
2248	/*****************************************************************************/	2724	/*****************************************************************************/
2249		2725
…		…
2307	ev_timer_set (&once->to, timeout, 0.);	2783	ev_timer_set (&once->to, timeout, 0.);
2308	ev_timer_start (EV_A_ &once->to);	2784	ev_timer_start (EV_A_ &once->to);
2309	}	2785	}
2310	}	2786	}
2311		2787
		2788	#if EV_MULTIPLICITY
		2789	#include "ev_wrap.h"
		2790	#endif
		2791
2312	#ifdef __cplusplus	2792	#ifdef __cplusplus
2313	}	2793	}
2314	#endif	2794	#endif
2315		2795

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