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Comparing libev/ev.c (file contents):
Revision 1.181 by root, Wed Dec 12 00:17:08 2007 UTC vs.
Revision 1.246 by root, Wed May 21 12:51:38 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	}	828	}
658		829
		830	/* away from the root */
659	void inline_speed	831	void inline_speed
660	downheap (WT *heap, int N, int k)	832	downheap (ANHE *heap, int N, int k)
661	{	833	{
662	WT w = heap [k];	834	ANHE he = heap [k];
		835	ANHE *E = heap + N + HEAP0;
663		836
664	for (;;)	837	for (;;)
665	{	838	{
666	int c = (k << 1) + 1;	839	ev_tstamp minat;
		840	ANHE *minpos;
		841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;
667		842
668	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
669	break;	859	break;
670		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
671	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])
672	? 1 : 0;	915	? 1 : 0;
673		916
674	if (w->at <= heap [c]->at)	917	if (ANHE_at (he) <= ANHE_at (heap [c]))
675	break;	918	break;
676		919
677	heap [k] = heap [c];	920	heap [k] = heap [c];
678	((W)heap [k])->active = k + 1;	921	ev_active (ANHE_w (heap [k])) = k;
679		922
680	k = c;	923	k = c;
681	}	924	}
682		925
683	heap [k] = w;	926	heap [k] = he;
684	((W)heap [k])->active = k + 1;	927	ev_active (ANHE_w (he)) = k;
685	}	928	}
		929	#endif
686		930
687	void inline_size	931	void inline_size
688	adjustheap (WT *heap, int N, int k)	932	adjustheap (ANHE *heap, int N, int k)
689	{	933	{
690	upheap (heap, k);	934	upheap (heap, k);
691	downheap (heap, N, k);	935	downheap (heap, N, k);
692	}	936	}
693		937
694	/*****************************************************************************/	938	/*****************************************************************************/
695		939
696	typedef struct	940	typedef struct
697	{	941	{
698	WL head;	942	WL head;
699	sig_atomic_t volatile gotsig;	943	EV_ATOMIC_T gotsig;
700	} ANSIG;	944	} ANSIG;
701		945
702	static ANSIG *signals;	946	static ANSIG *signals;
703	static int signalmax;	947	static int signalmax;
704		948
705	static int sigpipe [2];	949	static EV_ATOMIC_T gotsig;
706	static sig_atomic_t volatile gotsig;
707	static ev_io sigev;
708		950
709	void inline_size	951	void inline_size
710	signals_init (ANSIG *base, int count)	952	signals_init (ANSIG *base, int count)
711	{	953	{
712	while (count--)	954	while (count--)
…		…
716		958
717	++base;	959	++base;
718	}	960	}
719	}	961	}
720		962
721	static void	963	/*****************************************************************************/
722	sighandler (int signum)
723	{
724	#if _WIN32
725	signal (signum, sighandler);
726	#endif
727
728	signals [signum - 1].gotsig = 1;
729
730	if (!gotsig)
731	{
732	int old_errno = errno;
733	gotsig = 1;
734	write (sigpipe [1], &signum, 1);
735	errno = old_errno;
736	}
737	}
738
739	void noinline
740	ev_feed_signal_event (EV_P_ int signum)
741	{
742	WL w;
743
744	#if EV_MULTIPLICITY
745	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
746	#endif
747
748	--signum;
749
750	if (signum < 0 || signum >= signalmax)
751	return;
752
753	signals [signum].gotsig = 0;
754
755	for (w = signals [signum].head; w; w = w->next)
756	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
757	}
758
759	static void
760	sigcb (EV_P_ ev_io *iow, int revents)
761	{
762	int signum;
763
764	read (sigpipe [0], &revents, 1);
765	gotsig = 0;
766
767	for (signum = signalmax; signum--; )
768	if (signals [signum].gotsig)
769	ev_feed_signal_event (EV_A_ signum + 1);
770	}
771		964
772	void inline_speed	965	void inline_speed
773	fd_intern (int fd)	966	fd_intern (int fd)
774	{	967	{
775	#ifdef _WIN32	968	#ifdef _WIN32
…		…
780	fcntl (fd, F_SETFL, O_NONBLOCK);	973	fcntl (fd, F_SETFL, O_NONBLOCK);
781	#endif	974	#endif
782	}	975	}
783		976
784	static void noinline	977	static void noinline
785	siginit (EV_P)	978	evpipe_init (EV_P)
786	{	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
787	fd_intern (sigpipe [0]);	995	fd_intern (evpipe [0]);
788	fd_intern (sigpipe [1]);	996	fd_intern (evpipe [1]);
		997	ev_io_set (&pipeev, evpipe [0], EV_READ);
		998	}
789		999
790	ev_io_set (&sigev, sigpipe [0], EV_READ);
791	ev_io_start (EV_A_ &sigev);	1000	ev_io_start (EV_A_ &pipeev);
792	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
793	}	1068	}
794		1069
795	/*****************************************************************************/	1070	/*****************************************************************************/
796		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
797	static ev_child *childs [EV_PID_HASHSIZE];	1109	static WL childs [EV_PID_HASHSIZE];
798		1110
799	#ifndef _WIN32	1111	#ifndef _WIN32
800		1112
801	static ev_signal childev;	1113	static ev_signal childev;
802		1114
		1115	#ifndef WIFCONTINUED
		1116	# define WIFCONTINUED(status) 0
		1117	#endif
		1118
803	void inline_speed	1119	void inline_speed
804	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1120	child_reap (EV_P_ int chain, int pid, int status)
805	{	1121	{
806	ev_child *w;	1122	ev_child *w;
		1123	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
807		1124
808	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	{
809	if (w->pid == pid || !w->pid)	1127	if ((w->pid == pid || !w->pid)
		1128	&& (!traced || (w->flags & 1)))
810	{	1129	{
811	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 */
812	w->rpid = pid;	1131	w->rpid = pid;
813	w->rstatus = status;	1132	w->rstatus = status;
814	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1133	ev_feed_event (EV_A_ (W)w, EV_CHILD);
815	}	1134	}
		1135	}
816	}	1136	}
817		1137
818	#ifndef WCONTINUED	1138	#ifndef WCONTINUED
819	# define WCONTINUED 0	1139	# define WCONTINUED 0
820	#endif	1140	#endif
…		…
829	if (!WCONTINUED	1149	if (!WCONTINUED
830	|| errno != EINVAL	1150	|| errno != EINVAL
831	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1151	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
832	return;	1152	return;
833		1153
834	/* 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 */
835	/* 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 */
836	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1156	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
837		1157
838	child_reap (EV_A_ sw, pid, pid, status);	1158	child_reap (EV_A_ pid, pid, status);
839	if (EV_PID_HASHSIZE > 1)	1159	if (EV_PID_HASHSIZE > 1)
840	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 */
841	}	1161	}
842		1162
843	#endif	1163	#endif
844		1164
845	/*****************************************************************************/	1165	/*****************************************************************************/
…		…
917	}	1237	}
918		1238
919	unsigned int	1239	unsigned int
920	ev_embeddable_backends (void)	1240	ev_embeddable_backends (void)
921	{	1241	{
922	return EVBACKEND_EPOLL	1242	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
923	| EVBACKEND_KQUEUE	1243
924	| 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;
925	}	1249	}
926		1250
927	unsigned int	1251	unsigned int
928	ev_backend (EV_P)	1252	ev_backend (EV_P)
929	{	1253	{
…		…
932		1256
933	unsigned int	1257	unsigned int
934	ev_loop_count (EV_P)	1258	ev_loop_count (EV_P)
935	{	1259	{
936	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;
937	}	1273	}
938		1274
939	static void noinline	1275	static void noinline
940	loop_init (EV_P_ unsigned int flags)	1276	loop_init (EV_P_ unsigned int flags)
941	{	1277	{
…		…
947	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
948	have_monotonic = 1;	1284	have_monotonic = 1;
949	}	1285	}
950	#endif	1286	#endif
951		1287
952	ev_rt_now = ev_time ();	1288	ev_rt_now = ev_time ();
953	mn_now = get_clock ();	1289	mn_now = get_clock ();
954	now_floor = mn_now;	1290	now_floor = mn_now;
955	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
956		1301
957	/* pid check not overridable via env */	1302	/* pid check not overridable via env */
958	#ifndef _WIN32	1303	#ifndef _WIN32
959	if (flags & EVFLAG_FORKCHECK)	1304	if (flags & EVFLAG_FORKCHECK)
960	curpid = getpid ();	1305	curpid = getpid ();
…		…
963	if (!(flags & EVFLAG_NOENV)	1308	if (!(flags & EVFLAG_NOENV)
964	&& !enable_secure ()	1309	&& !enable_secure ()
965	&& getenv ("LIBEV_FLAGS"))	1310	&& getenv ("LIBEV_FLAGS"))
966	flags = atoi (getenv ("LIBEV_FLAGS"));	1311	flags = atoi (getenv ("LIBEV_FLAGS"));
967		1312
968	if (!(flags & 0x0000ffffUL))	1313	if (!(flags & 0x0000ffffU))
969	flags |= ev_recommended_backends ();	1314	flags |= ev_recommended_backends ();
970
971	backend = 0;
972	backend_fd = -1;
973	#if EV_USE_INOTIFY
974	fs_fd = -2;
975	#endif
976		1315
977	#if EV_USE_PORT	1316	#if EV_USE_PORT
978	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1317	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
979	#endif	1318	#endif
980	#if EV_USE_KQUEUE	1319	#if EV_USE_KQUEUE
…		…
988	#endif	1327	#endif
989	#if EV_USE_SELECT	1328	#if EV_USE_SELECT
990	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1329	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
991	#endif	1330	#endif
992		1331
993	ev_init (&sigev, sigcb);	1332	ev_init (&pipeev, pipecb);
994	ev_set_priority (&sigev, EV_MAXPRI);	1333	ev_set_priority (&pipeev, EV_MAXPRI);
995	}	1334	}
996	}	1335	}
997		1336
998	static void noinline	1337	static void noinline
999	loop_destroy (EV_P)	1338	loop_destroy (EV_P)
1000	{	1339	{
1001	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	}
1002		1358
1003	#if EV_USE_INOTIFY	1359	#if EV_USE_INOTIFY
1004	if (fs_fd >= 0)	1360	if (fs_fd >= 0)
1005	close (fs_fd);	1361	close (fs_fd);
1006	#endif	1362	#endif
…		…
1029	array_free (pending, [i]);	1385	array_free (pending, [i]);
1030	#if EV_IDLE_ENABLE	1386	#if EV_IDLE_ENABLE
1031	array_free (idle, [i]);	1387	array_free (idle, [i]);
1032	#endif	1388	#endif
1033	}	1389	}
		1390
		1391	ev_free (anfds); anfdmax = 0;
1034		1392
1035	/* have to use the microsoft-never-gets-it-right macro */	1393	/* have to use the microsoft-never-gets-it-right macro */
1036	array_free (fdchange, EMPTY);	1394	array_free (fdchange, EMPTY);
1037	array_free (timer, EMPTY);	1395	array_free (timer, EMPTY);
1038	#if EV_PERIODIC_ENABLE	1396	#if EV_PERIODIC_ENABLE
1039	array_free (periodic, EMPTY);	1397	array_free (periodic, EMPTY);
1040	#endif	1398	#endif
		1399	#if EV_FORK_ENABLE
		1400	array_free (fork, EMPTY);
		1401	#endif
1041	array_free (prepare, EMPTY);	1402	array_free (prepare, EMPTY);
1042	array_free (check, EMPTY);	1403	array_free (check, EMPTY);
		1404	#if EV_ASYNC_ENABLE
		1405	array_free (async, EMPTY);
		1406	#endif
1043		1407
1044	backend = 0;	1408	backend = 0;
1045	}	1409	}
1046		1410
		1411	#if EV_USE_INOTIFY
1047	void inline_size infy_fork (EV_P);	1412	void inline_size infy_fork (EV_P);
		1413	#endif
1048		1414
1049	void inline_size	1415	void inline_size
1050	loop_fork (EV_P)	1416	loop_fork (EV_P)
1051	{	1417	{
1052	#if EV_USE_PORT	1418	#if EV_USE_PORT
…		…
1060	#endif	1426	#endif
1061	#if EV_USE_INOTIFY	1427	#if EV_USE_INOTIFY
1062	infy_fork (EV_A);	1428	infy_fork (EV_A);
1063	#endif	1429	#endif
1064		1430
1065	if (ev_is_active (&sigev))	1431	if (ev_is_active (&pipeev))
1066	{	1432	{
1067	/* 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
1068		1439
1069	ev_ref (EV_A);	1440	ev_ref (EV_A);
1070	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	{
1071	close (sigpipe [0]);	1450	close (evpipe [0]);
1072	close (sigpipe [1]);	1451	close (evpipe [1]);
		1452	}
1073		1453
1074	while (pipe (sigpipe))
1075	syserr ("(libev) error creating pipe");
1076
1077	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);
1078	}	1457	}
1079		1458
1080	postfork = 0;	1459	postfork = 0;
1081	}	1460	}
1082		1461
…		…
1104	}	1483	}
1105		1484
1106	void	1485	void
1107	ev_loop_fork (EV_P)	1486	ev_loop_fork (EV_P)
1108	{	1487	{
1109	postfork = 1;	1488	postfork = 1; /* must be in line with ev_default_fork */
1110	}	1489	}
1111
1112	#endif	1490	#endif
1113		1491
1114	#if EV_MULTIPLICITY	1492	#if EV_MULTIPLICITY
1115	struct ev_loop *	1493	struct ev_loop *
1116	ev_default_loop_init (unsigned int flags)	1494	ev_default_loop_init (unsigned int flags)
1117	#else	1495	#else
1118	int	1496	int
1119	ev_default_loop (unsigned int flags)	1497	ev_default_loop (unsigned int flags)
1120	#endif	1498	#endif
1121	{	1499	{
1122	if (sigpipe [0] == sigpipe [1])
1123	if (pipe (sigpipe))
1124	return 0;
1125
1126	if (!ev_default_loop_ptr)	1500	if (!ev_default_loop_ptr)
1127	{	1501	{
1128	#if EV_MULTIPLICITY	1502	#if EV_MULTIPLICITY
1129	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1503	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1130	#else	1504	#else
…		…
1133		1507
1134	loop_init (EV_A_ flags);	1508	loop_init (EV_A_ flags);
1135		1509
1136	if (ev_backend (EV_A))	1510	if (ev_backend (EV_A))
1137	{	1511	{
1138	siginit (EV_A);
1139
1140	#ifndef _WIN32	1512	#ifndef _WIN32
1141	ev_signal_init (&childev, childcb, SIGCHLD);	1513	ev_signal_init (&childev, childcb, SIGCHLD);
1142	ev_set_priority (&childev, EV_MAXPRI);	1514	ev_set_priority (&childev, EV_MAXPRI);
1143	ev_signal_start (EV_A_ &childev);	1515	ev_signal_start (EV_A_ &childev);
1144	ev_unref (EV_A); /* child watcher should not keep loop alive */	1516	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1161	#ifndef _WIN32	1533	#ifndef _WIN32
1162	ev_ref (EV_A); /* child watcher */	1534	ev_ref (EV_A); /* child watcher */
1163	ev_signal_stop (EV_A_ &childev);	1535	ev_signal_stop (EV_A_ &childev);
1164	#endif	1536	#endif
1165		1537
1166	ev_ref (EV_A); /* signal watcher */
1167	ev_io_stop (EV_A_ &sigev);
1168
1169	close (sigpipe [0]); sigpipe [0] = 0;
1170	close (sigpipe [1]); sigpipe [1] = 0;
1171
1172	loop_destroy (EV_A);	1538	loop_destroy (EV_A);
1173	}	1539	}
1174		1540
1175	void	1541	void
1176	ev_default_fork (void)	1542	ev_default_fork (void)
…		…
1178	#if EV_MULTIPLICITY	1544	#if EV_MULTIPLICITY
1179	struct ev_loop *loop = ev_default_loop_ptr;	1545	struct ev_loop *loop = ev_default_loop_ptr;
1180	#endif	1546	#endif
1181		1547
1182	if (backend)	1548	if (backend)
1183	postfork = 1;	1549	postfork = 1; /* must be in line with ev_loop_fork */
1184	}	1550	}
1185		1551
1186	/*****************************************************************************/	1552	/*****************************************************************************/
1187		1553
1188	void	1554	void
…		…
1208	p->w->pending = 0;	1574	p->w->pending = 0;
1209	EV_CB_INVOKE (p->w, p->events);	1575	EV_CB_INVOKE (p->w, p->events);
1210	}	1576	}
1211	}	1577	}
1212	}	1578	}
1213
1214	void inline_size
1215	timers_reify (EV_P)
1216	{
1217	while (timercnt && ((WT)timers [0])->at <= mn_now)
1218	{
1219	ev_timer *w = (ev_timer *)timers [0];
1220
1221	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1222
1223	/* first reschedule or stop timer */
1224	if (w->repeat)
1225	{
1226	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1227
1228	((WT)w)->at += w->repeat;
1229	if (((WT)w)->at < mn_now)
1230	((WT)w)->at = mn_now;
1231
1232	downheap (timers, timercnt, 0);
1233	}
1234	else
1235	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1236
1237	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1238	}
1239	}
1240
1241	#if EV_PERIODIC_ENABLE
1242	void inline_size
1243	periodics_reify (EV_P)
1244	{
1245	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1246	{
1247	ev_periodic *w = (ev_periodic *)periodics [0];
1248
1249	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1250
1251	/* first reschedule or stop timer */
1252	if (w->reschedule_cb)
1253	{
1254	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1255	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1256	downheap (periodics, periodiccnt, 0);
1257	}
1258	else if (w->interval)
1259	{
1260	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1261	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1262	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1263	downheap (periodics, periodiccnt, 0);
1264	}
1265	else
1266	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1267
1268	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1269	}
1270	}
1271
1272	static void noinline
1273	periodics_reschedule (EV_P)
1274	{
1275	int i;
1276
1277	/* adjust periodics after time jump */
1278	for (i = 0; i < periodiccnt; ++i)
1279	{
1280	ev_periodic *w = (ev_periodic *)periodics [i];
1281
1282	if (w->reschedule_cb)
1283	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1284	else if (w->interval)
1285	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1286	}
1287
1288	/* now rebuild the heap */
1289	for (i = periodiccnt >> 1; i--; )
1290	downheap (periodics, periodiccnt, i);
1291	}
1292	#endif
1293		1579
1294	#if EV_IDLE_ENABLE	1580	#if EV_IDLE_ENABLE
1295	void inline_size	1581	void inline_size
1296	idle_reify (EV_P)	1582	idle_reify (EV_P)
1297	{	1583	{
…		…
1309	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1595	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1310	break;	1596	break;
1311	}	1597	}
1312	}	1598	}
1313	}	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);
		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 next trigger time is not sufficiently in the future, put it there */
		1655	/* this might happen because of floating point inexactness */
		1656	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1657	{
		1658	ev_at (w) += w->interval;
		1659
		1660	/* if interval is unreasonably low we might still have a time in the past */
		1661	/* so correct this. this will make the periodic very inexact, but the user */
		1662	/* has effectively asked to get triggered more often than possible */
		1663	if (ev_at (w) < ev_rt_now)
		1664	ev_at (w) = ev_rt_now;
		1665	}
		1666
		1667	ANHE_at_set (periodics [HEAP0]);
		1668	downheap (periodics, periodiccnt, HEAP0);
		1669	}
		1670	else
		1671	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1672
		1673	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1674	}
		1675	}
		1676
		1677	static void noinline
		1678	periodics_reschedule (EV_P)
		1679	{
		1680	int i;
		1681
		1682	/* adjust periodics after time jump */
		1683	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1684	{
		1685	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1686
		1687	if (w->reschedule_cb)
		1688	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1689	else if (w->interval)
		1690	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1691
		1692	ANHE_at_set (periodics [i]);
		1693	}
		1694
		1695	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */
		1696	/* also, this is easy and corretc for both 2-heaps and 4-heaps */
		1697	for (i = 0; i < periodiccnt; ++i)
		1698	upheap (periodics, i + HEAP0);
1314	}	1699	}
1315	#endif	1700	#endif
1316		1701
1317	void inline_speed	1702	void inline_speed
1318	time_update (EV_P_ ev_tstamp max_block)	1703	time_update (EV_P_ ev_tstamp max_block)
…		…
1347	*/	1732	*/
1348	for (i = 4; --i; )	1733	for (i = 4; --i; )
1349	{	1734	{
1350	rtmn_diff = ev_rt_now - mn_now;	1735	rtmn_diff = ev_rt_now - mn_now;
1351		1736
1352	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1737	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1353	return; /* all is well */	1738	return; /* all is well */
1354		1739
1355	ev_rt_now = ev_time ();	1740	ev_rt_now = ev_time ();
1356	mn_now = get_clock ();	1741	mn_now = get_clock ();
1357	now_floor = mn_now;	1742	now_floor = mn_now;
…		…
1373	#if EV_PERIODIC_ENABLE	1758	#if EV_PERIODIC_ENABLE
1374	periodics_reschedule (EV_A);	1759	periodics_reschedule (EV_A);
1375	#endif	1760	#endif
1376	/* adjust timers. this is easy, as the offset is the same for all of them */	1761	/* adjust timers. this is easy, as the offset is the same for all of them */
1377	for (i = 0; i < timercnt; ++i)	1762	for (i = 0; i < timercnt; ++i)
		1763	{
		1764	ANHE *he = timers + i + HEAP0;
1378	((WT)timers [i])->at += ev_rt_now - mn_now;	1765	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1766	ANHE_at_set (*he);
		1767	}
1379	}	1768	}
1380		1769
1381	mn_now = ev_rt_now;	1770	mn_now = ev_rt_now;
1382	}	1771	}
1383	}	1772	}
…		…
1397	static int loop_done;	1786	static int loop_done;
1398		1787
1399	void	1788	void
1400	ev_loop (EV_P_ int flags)	1789	ev_loop (EV_P_ int flags)
1401	{	1790	{
1402	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1791	loop_done = EVUNLOOP_CANCEL;
1403	? EVUNLOOP_ONE
1404	: EVUNLOOP_CANCEL;
1405		1792
1406	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1793	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1407		1794
1408	do	1795	do
1409	{	1796	{
…		…
1443	/* update fd-related kernel structures */	1830	/* update fd-related kernel structures */
1444	fd_reify (EV_A);	1831	fd_reify (EV_A);
1445		1832
1446	/* calculate blocking time */	1833	/* calculate blocking time */
1447	{	1834	{
1448	ev_tstamp block;	1835	ev_tstamp waittime = 0.;
		1836	ev_tstamp sleeptime = 0.;
1449		1837
1450	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1838	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1451	block = 0.; /* do not block at all */
1452	else
1453	{	1839	{
1454	/* update time to cancel out callback processing overhead */	1840	/* update time to cancel out callback processing overhead */
1455	time_update (EV_A_ 1e100);	1841	time_update (EV_A_ 1e100);
1456		1842
1457	block = MAX_BLOCKTIME;	1843	waittime = MAX_BLOCKTIME;
1458		1844
1459	if (timercnt)	1845	if (timercnt)
1460	{	1846	{
1461	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1847	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1462	if (block > to) block = to;	1848	if (waittime > to) waittime = to;
1463	}	1849	}
1464		1850
1465	#if EV_PERIODIC_ENABLE	1851	#if EV_PERIODIC_ENABLE
1466	if (periodiccnt)	1852	if (periodiccnt)
1467	{	1853	{
1468	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1854	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1469	if (block > to) block = to;	1855	if (waittime > to) waittime = to;
1470	}	1856	}
1471	#endif	1857	#endif
1472		1858
1473	if (expect_false (block < 0.)) block = 0.;	1859	if (expect_false (waittime < timeout_blocktime))
		1860	waittime = timeout_blocktime;
		1861
		1862	sleeptime = waittime - backend_fudge;
		1863
		1864	if (expect_true (sleeptime > io_blocktime))
		1865	sleeptime = io_blocktime;
		1866
		1867	if (sleeptime)
		1868	{
		1869	ev_sleep (sleeptime);
		1870	waittime -= sleeptime;
		1871	}
1474	}	1872	}
1475		1873
1476	++loop_count;	1874	++loop_count;
1477	backend_poll (EV_A_ block);	1875	backend_poll (EV_A_ waittime);
1478		1876
1479	/* update ev_rt_now, do magic */	1877	/* update ev_rt_now, do magic */
1480	time_update (EV_A_ block);	1878	time_update (EV_A_ waittime + sleeptime);
1481	}	1879	}
1482		1880
1483	/* queue pending timers and reschedule them */	1881	/* queue pending timers and reschedule them */
1484	timers_reify (EV_A); /* relative timers called last */	1882	timers_reify (EV_A); /* relative timers called last */
1485	#if EV_PERIODIC_ENABLE	1883	#if EV_PERIODIC_ENABLE
…		…
1494	/* queue check watchers, to be executed first */	1892	/* queue check watchers, to be executed first */
1495	if (expect_false (checkcnt))	1893	if (expect_false (checkcnt))
1496	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1894	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1497		1895
1498	call_pending (EV_A);	1896	call_pending (EV_A);
1499
1500	}	1897	}
1501	while (expect_true (activecnt && !loop_done));	1898	while (expect_true (
		1899	activecnt
		1900	&& !loop_done
		1901	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1902	));
1502		1903
1503	if (loop_done == EVUNLOOP_ONE)	1904	if (loop_done == EVUNLOOP_ONE)
1504	loop_done = EVUNLOOP_CANCEL;	1905	loop_done = EVUNLOOP_CANCEL;
1505	}	1906	}
1506		1907
…		…
1597		1998
1598	assert (("ev_io_start called with negative fd", fd >= 0));	1999	assert (("ev_io_start called with negative fd", fd >= 0));
1599		2000
1600	ev_start (EV_A_ (W)w, 1);	2001	ev_start (EV_A_ (W)w, 1);
1601	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2002	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1602	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2003	wlist_add (&anfds[fd].head, (WL)w);
1603		2004
1604	fd_change (EV_A_ fd);	2005	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		2006	w->events &= ~EV_IOFDSET;
1605	}	2007	}
1606		2008
1607	void noinline	2009	void noinline
1608	ev_io_stop (EV_P_ ev_io *w)	2010	ev_io_stop (EV_P_ ev_io *w)
1609	{	2011	{
1610	clear_pending (EV_A_ (W)w);	2012	clear_pending (EV_A_ (W)w);
1611	if (expect_false (!ev_is_active (w)))	2013	if (expect_false (!ev_is_active (w)))
1612	return;	2014	return;
1613		2015
1614	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2016	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1615		2017
1616	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2018	wlist_del (&anfds[w->fd].head, (WL)w);
1617	ev_stop (EV_A_ (W)w);	2019	ev_stop (EV_A_ (W)w);
1618		2020
1619	fd_change (EV_A_ w->fd);	2021	fd_change (EV_A_ w->fd, 1);
1620	}	2022	}
1621		2023
1622	void noinline	2024	void noinline
1623	ev_timer_start (EV_P_ ev_timer *w)	2025	ev_timer_start (EV_P_ ev_timer *w)
1624	{	2026	{
1625	if (expect_false (ev_is_active (w)))	2027	if (expect_false (ev_is_active (w)))
1626	return;	2028	return;
1627		2029
1628	((WT)w)->at += mn_now;	2030	ev_at (w) += mn_now;
1629		2031
1630	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2032	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1631		2033
1632	ev_start (EV_A_ (W)w, ++timercnt);	2034	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);
1633	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2035	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1634	timers [timercnt - 1] = (WT)w;	2036	ANHE_w (timers [ev_active (w)]) = (WT)w;
1635	upheap (timers, timercnt - 1);	2037	ANHE_at_set (timers [ev_active (w)]);
		2038	upheap (timers, ev_active (w));
1636		2039
1637	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2040	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1638	}	2041	}
1639		2042
1640	void noinline	2043	void noinline
1641	ev_timer_stop (EV_P_ ev_timer *w)	2044	ev_timer_stop (EV_P_ ev_timer *w)
1642	{	2045	{
1643	clear_pending (EV_A_ (W)w);	2046	clear_pending (EV_A_ (W)w);
1644	if (expect_false (!ev_is_active (w)))	2047	if (expect_false (!ev_is_active (w)))
1645	return;	2048	return;
1646		2049
1647	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1648
1649	{	2050	{
1650	int active = ((W)w)->active;	2051	int active = ev_active (w);
1651		2052
		2053	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2054
1652	if (expect_true (--active < --timercnt))	2055	if (expect_true (active < timercnt + HEAP0 - 1))
1653	{	2056	{
1654	timers [active] = timers [timercnt];	2057	timers [active] = timers [timercnt + HEAP0 - 1];
1655	adjustheap (timers, timercnt, active);	2058	adjustheap (timers, timercnt, active);
1656	}	2059	}
		2060
		2061	--timercnt;
1657	}	2062	}
1658		2063
1659	((WT)w)->at -= mn_now;	2064	ev_at (w) -= mn_now;
1660		2065
1661	ev_stop (EV_A_ (W)w);	2066	ev_stop (EV_A_ (W)w);
1662	}	2067	}
1663		2068
1664	void noinline	2069	void noinline
…		…
1666	{	2071	{
1667	if (ev_is_active (w))	2072	if (ev_is_active (w))
1668	{	2073	{
1669	if (w->repeat)	2074	if (w->repeat)
1670	{	2075	{
1671	((WT)w)->at = mn_now + w->repeat;	2076	ev_at (w) = mn_now + w->repeat;
		2077	ANHE_at_set (timers [ev_active (w)]);
1672	adjustheap (timers, timercnt, ((W)w)->active - 1);	2078	adjustheap (timers, timercnt, ev_active (w));
1673	}	2079	}
1674	else	2080	else
1675	ev_timer_stop (EV_A_ w);	2081	ev_timer_stop (EV_A_ w);
1676	}	2082	}
1677	else if (w->repeat)	2083	else if (w->repeat)
1678	{	2084	{
1679	w->at = w->repeat;	2085	ev_at (w) = w->repeat;
1680	ev_timer_start (EV_A_ w);	2086	ev_timer_start (EV_A_ w);
1681	}	2087	}
1682	}	2088	}
1683		2089
1684	#if EV_PERIODIC_ENABLE	2090	#if EV_PERIODIC_ENABLE
…		…
1687	{	2093	{
1688	if (expect_false (ev_is_active (w)))	2094	if (expect_false (ev_is_active (w)))
1689	return;	2095	return;
1690		2096
1691	if (w->reschedule_cb)	2097	if (w->reschedule_cb)
1692	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2098	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1693	else if (w->interval)	2099	else if (w->interval)
1694	{	2100	{
1695	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2101	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1696	/* this formula differs from the one in periodic_reify because we do not always round up */	2102	/* this formula differs from the one in periodic_reify because we do not always round up */
1697	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2103	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1698	}	2104	}
1699	else	2105	else
1700	((WT)w)->at = w->offset;	2106	ev_at (w) = w->offset;
1701		2107
1702	ev_start (EV_A_ (W)w, ++periodiccnt);	2108	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);
1703	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2109	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1704	periodics [periodiccnt - 1] = (WT)w;	2110	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1705	upheap (periodics, periodiccnt - 1);	2111	ANHE_at_set (periodics [ev_active (w)]);
		2112	upheap (periodics, ev_active (w));
1706		2113
1707	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2114	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1708	}	2115	}
1709		2116
1710	void noinline	2117	void noinline
1711	ev_periodic_stop (EV_P_ ev_periodic *w)	2118	ev_periodic_stop (EV_P_ ev_periodic *w)
1712	{	2119	{
1713	clear_pending (EV_A_ (W)w);	2120	clear_pending (EV_A_ (W)w);
1714	if (expect_false (!ev_is_active (w)))	2121	if (expect_false (!ev_is_active (w)))
1715	return;	2122	return;
1716		2123
1717	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1718
1719	{	2124	{
1720	int active = ((W)w)->active;	2125	int active = ev_active (w);
1721		2126
		2127	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2128
1722	if (expect_true (--active < --periodiccnt))	2129	if (expect_true (active < periodiccnt + HEAP0 - 1))
1723	{	2130	{
1724	periodics [active] = periodics [periodiccnt];	2131	periodics [active] = periodics [periodiccnt + HEAP0 - 1];
1725	adjustheap (periodics, periodiccnt, active);	2132	adjustheap (periodics, periodiccnt, active);
1726	}	2133	}
		2134
		2135	--periodiccnt;
1727	}	2136	}
1728		2137
1729	ev_stop (EV_A_ (W)w);	2138	ev_stop (EV_A_ (W)w);
1730	}	2139	}
1731		2140
…		…
1750	#endif	2159	#endif
1751	if (expect_false (ev_is_active (w)))	2160	if (expect_false (ev_is_active (w)))
1752	return;	2161	return;
1753		2162
1754	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2163	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2164
		2165	evpipe_init (EV_A);
1755		2166
1756	{	2167	{
1757	#ifndef _WIN32	2168	#ifndef _WIN32
1758	sigset_t full, prev;	2169	sigset_t full, prev;
1759	sigfillset (&full);	2170	sigfillset (&full);
…		…
1766	sigprocmask (SIG_SETMASK, &prev, 0);	2177	sigprocmask (SIG_SETMASK, &prev, 0);
1767	#endif	2178	#endif
1768	}	2179	}
1769		2180
1770	ev_start (EV_A_ (W)w, 1);	2181	ev_start (EV_A_ (W)w, 1);
1771	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2182	wlist_add (&signals [w->signum - 1].head, (WL)w);
1772		2183
1773	if (!((WL)w)->next)	2184	if (!((WL)w)->next)
1774	{	2185	{
1775	#if _WIN32	2186	#if _WIN32
1776	signal (w->signum, sighandler);	2187	signal (w->signum, ev_sighandler);
1777	#else	2188	#else
1778	struct sigaction sa;	2189	struct sigaction sa;
1779	sa.sa_handler = sighandler;	2190	sa.sa_handler = ev_sighandler;
1780	sigfillset (&sa.sa_mask);	2191	sigfillset (&sa.sa_mask);
1781	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2192	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1782	sigaction (w->signum, &sa, 0);	2193	sigaction (w->signum, &sa, 0);
1783	#endif	2194	#endif
1784	}	2195	}
…		…
1789	{	2200	{
1790	clear_pending (EV_A_ (W)w);	2201	clear_pending (EV_A_ (W)w);
1791	if (expect_false (!ev_is_active (w)))	2202	if (expect_false (!ev_is_active (w)))
1792	return;	2203	return;
1793		2204
1794	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2205	wlist_del (&signals [w->signum - 1].head, (WL)w);
1795	ev_stop (EV_A_ (W)w);	2206	ev_stop (EV_A_ (W)w);
1796		2207
1797	if (!signals [w->signum - 1].head)	2208	if (!signals [w->signum - 1].head)
1798	signal (w->signum, SIG_DFL);	2209	signal (w->signum, SIG_DFL);
1799	}	2210	}
…		…
1806	#endif	2217	#endif
1807	if (expect_false (ev_is_active (w)))	2218	if (expect_false (ev_is_active (w)))
1808	return;	2219	return;
1809		2220
1810	ev_start (EV_A_ (W)w, 1);	2221	ev_start (EV_A_ (W)w, 1);
1811	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2222	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1812	}	2223	}
1813		2224
1814	void	2225	void
1815	ev_child_stop (EV_P_ ev_child *w)	2226	ev_child_stop (EV_P_ ev_child *w)
1816	{	2227	{
1817	clear_pending (EV_A_ (W)w);	2228	clear_pending (EV_A_ (W)w);
1818	if (expect_false (!ev_is_active (w)))	2229	if (expect_false (!ev_is_active (w)))
1819	return;	2230	return;
1820		2231
1821	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2232	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1822	ev_stop (EV_A_ (W)w);	2233	ev_stop (EV_A_ (W)w);
1823	}	2234	}
1824		2235
1825	#if EV_STAT_ENABLE	2236	#if EV_STAT_ENABLE
1826		2237
…		…
1845	if (w->wd < 0)	2256	if (w->wd < 0)
1846	{	2257	{
1847	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2258	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1848		2259
1849	/* monitor some parent directory for speedup hints */	2260	/* monitor some parent directory for speedup hints */
		2261	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2262	/* but an efficiency issue only */
1850	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2263	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1851	{	2264	{
1852	char path [4096];	2265	char path [4096];
1853	strcpy (path, w->path);	2266	strcpy (path, w->path);
1854		2267
…		…
2099	clear_pending (EV_A_ (W)w);	2512	clear_pending (EV_A_ (W)w);
2100	if (expect_false (!ev_is_active (w)))	2513	if (expect_false (!ev_is_active (w)))
2101	return;	2514	return;
2102		2515
2103	{	2516	{
2104	int active = ((W)w)->active;	2517	int active = ev_active (w);
2105		2518
2106	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2519	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2107	((W)idles [ABSPRI (w)][active - 1])->active = active;	2520	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2108		2521
2109	ev_stop (EV_A_ (W)w);	2522	ev_stop (EV_A_ (W)w);
2110	--idleall;	2523	--idleall;
2111	}	2524	}
2112	}	2525	}
…		…
2129	clear_pending (EV_A_ (W)w);	2542	clear_pending (EV_A_ (W)w);
2130	if (expect_false (!ev_is_active (w)))	2543	if (expect_false (!ev_is_active (w)))
2131	return;	2544	return;
2132		2545
2133	{	2546	{
2134	int active = ((W)w)->active;	2547	int active = ev_active (w);
		2548
2135	prepares [active - 1] = prepares [--preparecnt];	2549	prepares [active - 1] = prepares [--preparecnt];
2136	((W)prepares [active - 1])->active = active;	2550	ev_active (prepares [active - 1]) = active;
2137	}	2551	}
2138		2552
2139	ev_stop (EV_A_ (W)w);	2553	ev_stop (EV_A_ (W)w);
2140	}	2554	}
2141		2555
…		…
2156	clear_pending (EV_A_ (W)w);	2570	clear_pending (EV_A_ (W)w);
2157	if (expect_false (!ev_is_active (w)))	2571	if (expect_false (!ev_is_active (w)))
2158	return;	2572	return;
2159		2573
2160	{	2574	{
2161	int active = ((W)w)->active;	2575	int active = ev_active (w);
		2576
2162	checks [active - 1] = checks [--checkcnt];	2577	checks [active - 1] = checks [--checkcnt];
2163	((W)checks [active - 1])->active = active;	2578	ev_active (checks [active - 1]) = active;
2164	}	2579	}
2165		2580
2166	ev_stop (EV_A_ (W)w);	2581	ev_stop (EV_A_ (W)w);
2167	}	2582	}
2168		2583
2169	#if EV_EMBED_ENABLE	2584	#if EV_EMBED_ENABLE
2170	void noinline	2585	void noinline
2171	ev_embed_sweep (EV_P_ ev_embed *w)	2586	ev_embed_sweep (EV_P_ ev_embed *w)
2172	{	2587	{
2173	ev_loop (w->loop, EVLOOP_NONBLOCK);	2588	ev_loop (w->other, EVLOOP_NONBLOCK);
2174	}	2589	}
2175		2590
2176	static void	2591	static void
2177	embed_cb (EV_P_ ev_io *io, int revents)	2592	embed_io_cb (EV_P_ ev_io *io, int revents)
2178	{	2593	{
2179	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2594	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2180		2595
2181	if (ev_cb (w))	2596	if (ev_cb (w))
2182	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2597	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2183	else	2598	else
2184	ev_embed_sweep (loop, w);	2599	ev_loop (w->other, EVLOOP_NONBLOCK);
2185	}	2600	}
		2601
		2602	static void
		2603	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2604	{
		2605	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2606
		2607	{
		2608	struct ev_loop *loop = w->other;
		2609
		2610	while (fdchangecnt)
		2611	{
		2612	fd_reify (EV_A);
		2613	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2614	}
		2615	}
		2616	}
		2617
		2618	#if 0
		2619	static void
		2620	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2621	{
		2622	ev_idle_stop (EV_A_ idle);
		2623	}
		2624	#endif
2186		2625
2187	void	2626	void
2188	ev_embed_start (EV_P_ ev_embed *w)	2627	ev_embed_start (EV_P_ ev_embed *w)
2189	{	2628	{
2190	if (expect_false (ev_is_active (w)))	2629	if (expect_false (ev_is_active (w)))
2191	return;	2630	return;
2192		2631
2193	{	2632	{
2194	struct ev_loop *loop = w->loop;	2633	struct ev_loop *loop = w->other;
2195	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2634	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2196	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2635	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2197	}	2636	}
2198		2637
2199	ev_set_priority (&w->io, ev_priority (w));	2638	ev_set_priority (&w->io, ev_priority (w));
2200	ev_io_start (EV_A_ &w->io);	2639	ev_io_start (EV_A_ &w->io);
		2640
		2641	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2642	ev_set_priority (&w->prepare, EV_MINPRI);
		2643	ev_prepare_start (EV_A_ &w->prepare);
		2644
		2645	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2201		2646
2202	ev_start (EV_A_ (W)w, 1);	2647	ev_start (EV_A_ (W)w, 1);
2203	}	2648	}
2204		2649
2205	void	2650	void
…		…
2208	clear_pending (EV_A_ (W)w);	2653	clear_pending (EV_A_ (W)w);
2209	if (expect_false (!ev_is_active (w)))	2654	if (expect_false (!ev_is_active (w)))
2210	return;	2655	return;
2211		2656
2212	ev_io_stop (EV_A_ &w->io);	2657	ev_io_stop (EV_A_ &w->io);
		2658	ev_prepare_stop (EV_A_ &w->prepare);
2213		2659
2214	ev_stop (EV_A_ (W)w);	2660	ev_stop (EV_A_ (W)w);
2215	}	2661	}
2216	#endif	2662	#endif
2217		2663
…		…
2233	clear_pending (EV_A_ (W)w);	2679	clear_pending (EV_A_ (W)w);
2234	if (expect_false (!ev_is_active (w)))	2680	if (expect_false (!ev_is_active (w)))
2235	return;	2681	return;
2236		2682
2237	{	2683	{
2238	int active = ((W)w)->active;	2684	int active = ev_active (w);
		2685
2239	forks [active - 1] = forks [--forkcnt];	2686	forks [active - 1] = forks [--forkcnt];
2240	((W)forks [active - 1])->active = active;	2687	ev_active (forks [active - 1]) = active;
2241	}	2688	}
2242		2689
2243	ev_stop (EV_A_ (W)w);	2690	ev_stop (EV_A_ (W)w);
		2691	}
		2692	#endif
		2693
		2694	#if EV_ASYNC_ENABLE
		2695	void
		2696	ev_async_start (EV_P_ ev_async *w)
		2697	{
		2698	if (expect_false (ev_is_active (w)))
		2699	return;
		2700
		2701	evpipe_init (EV_A);
		2702
		2703	ev_start (EV_A_ (W)w, ++asynccnt);
		2704	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2705	asyncs [asynccnt - 1] = w;
		2706	}
		2707
		2708	void
		2709	ev_async_stop (EV_P_ ev_async *w)
		2710	{
		2711	clear_pending (EV_A_ (W)w);
		2712	if (expect_false (!ev_is_active (w)))
		2713	return;
		2714
		2715	{
		2716	int active = ev_active (w);
		2717
		2718	asyncs [active - 1] = asyncs [--asynccnt];
		2719	ev_active (asyncs [active - 1]) = active;
		2720	}
		2721
		2722	ev_stop (EV_A_ (W)w);
		2723	}
		2724
		2725	void
		2726	ev_async_send (EV_P_ ev_async *w)
		2727	{
		2728	w->sent = 1;
		2729	evpipe_write (EV_A_ &gotasync);
2244	}	2730	}
2245	#endif	2731	#endif
2246		2732
2247	/*****************************************************************************/	2733	/*****************************************************************************/
2248		2734
…		…
2306	ev_timer_set (&once->to, timeout, 0.);	2792	ev_timer_set (&once->to, timeout, 0.);
2307	ev_timer_start (EV_A_ &once->to);	2793	ev_timer_start (EV_A_ &once->to);
2308	}	2794	}
2309	}	2795	}
2310		2796
		2797	#if EV_MULTIPLICITY
		2798	#include "ev_wrap.h"
		2799	#endif
		2800
2311	#ifdef __cplusplus	2801	#ifdef __cplusplus
2312	}	2802	}
2313	#endif	2803	#endif
2314		2804

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