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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 1.256 by root, Thu Jun 19 06:53:49 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>
…		…
129	#ifndef _WIN32	154	#ifndef _WIN32
130	# include <sys/time.h>	155	# include <sys/time.h>
131	# include <sys/wait.h>	156	# include <sys/wait.h>
132	# include <unistd.h>	157	# include <unistd.h>
133	#else	158	#else
		159	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	160	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	161	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	162	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	163	# define EV_SELECT_IS_WINSOCKET 1
138	# endif	164	# endif
139	#endif	165	#endif
140		166
141	/**/	167	/* this block tries to deduce configuration from header-defined symbols and defaults */
142		168
143	#ifndef EV_USE_MONOTONIC	169	#ifndef EV_USE_MONOTONIC
		170	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		171	# define EV_USE_MONOTONIC 1
		172	# else
144	# define EV_USE_MONOTONIC 0	173	# define EV_USE_MONOTONIC 0
		174	# endif
145	#endif	175	#endif
146		176
147	#ifndef EV_USE_REALTIME	177	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	178	# define EV_USE_REALTIME 0
		179	#endif
		180
		181	#ifndef EV_USE_NANOSLEEP
		182	# if _POSIX_C_SOURCE >= 199309L
		183	# define EV_USE_NANOSLEEP 1
		184	# else
		185	# define EV_USE_NANOSLEEP 0
		186	# endif
149	#endif	187	#endif
150		188
151	#ifndef EV_USE_SELECT	189	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	190	# define EV_USE_SELECT 1
153	#endif	191	#endif
…		…
159	# define EV_USE_POLL 1	197	# define EV_USE_POLL 1
160	# endif	198	# endif
161	#endif	199	#endif
162		200
163	#ifndef EV_USE_EPOLL	201	#ifndef EV_USE_EPOLL
		202	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		203	# define EV_USE_EPOLL 1
		204	# else
164	# define EV_USE_EPOLL 0	205	# define EV_USE_EPOLL 0
		206	# endif
165	#endif	207	#endif
166		208
167	#ifndef EV_USE_KQUEUE	209	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	210	# define EV_USE_KQUEUE 0
169	#endif	211	#endif
…		…
171	#ifndef EV_USE_PORT	213	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	214	# define EV_USE_PORT 0
173	#endif	215	#endif
174		216
175	#ifndef EV_USE_INOTIFY	217	#ifndef EV_USE_INOTIFY
		218	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		219	# define EV_USE_INOTIFY 1
		220	# else
176	# define EV_USE_INOTIFY 0	221	# define EV_USE_INOTIFY 0
		222	# endif
177	#endif	223	#endif
178		224
179	#ifndef EV_PID_HASHSIZE	225	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	226	# if EV_MINIMAL
181	# define EV_PID_HASHSIZE 1	227	# define EV_PID_HASHSIZE 1
…		…
190	# else	236	# else
191	# define EV_INOTIFY_HASHSIZE 16	237	# define EV_INOTIFY_HASHSIZE 16
192	# endif	238	# endif
193	#endif	239	#endif
194		240
195	/**/	241	#ifndef EV_USE_EVENTFD
		242	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		243	# define EV_USE_EVENTFD 1
		244	# else
		245	# define EV_USE_EVENTFD 0
		246	# endif
		247	#endif
		248
		249	#if 0 /* debugging */
		250	# define EV_VERIFY 3
		251	# define EV_USE_4HEAP 1
		252	# define EV_HEAP_CACHE_AT 1
		253	#endif
		254
		255	#ifndef EV_VERIFY
		256	# define EV_VERIFY !EV_MINIMAL
		257	#endif
		258
		259	#ifndef EV_USE_4HEAP
		260	# define EV_USE_4HEAP !EV_MINIMAL
		261	#endif
		262
		263	#ifndef EV_HEAP_CACHE_AT
		264	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		265	#endif
		266
		267	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		268
197	#ifndef CLOCK_MONOTONIC	269	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	270	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	271	# define EV_USE_MONOTONIC 0
200	#endif	272	#endif
…		…
202	#ifndef CLOCK_REALTIME	274	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	275	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	276	# define EV_USE_REALTIME 0
205	#endif	277	#endif
206		278
		279	#if !EV_STAT_ENABLE
		280	# undef EV_USE_INOTIFY
		281	# define EV_USE_INOTIFY 0
		282	#endif
		283
		284	#if !EV_USE_NANOSLEEP
		285	# ifndef _WIN32
		286	# include <sys/select.h>
		287	# endif
		288	#endif
		289
		290	#if EV_USE_INOTIFY
		291	# include <sys/inotify.h>
		292	#endif
		293
207	#if EV_SELECT_IS_WINSOCKET	294	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	295	# include <winsock.h>
209	#endif	296	#endif
210		297
211	#if !EV_STAT_ENABLE	298	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	299	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		300	# include <stdint.h>
		301	# ifdef __cplusplus
		302	extern "C" {
213	#endif	303	# endif
214		304	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	305	# ifdef __cplusplus
216	# include <sys/inotify.h>	306	}
		307	# endif
217	#endif	308	#endif
218		309
219	/**/	310	/**/
		311
		312	#if EV_VERIFY >= 3
		313	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		314	#else
		315	# define EV_FREQUENT_CHECK do { } while (0)
		316	#endif
220		317
221	/*	318	/*
222	* This is used to avoid floating point rounding problems.	319	* This is used to avoid floating point rounding problems.
223	* It is added to ev_rt_now when scheduling periodics	320	* It is added to ev_rt_now when scheduling periodics
224	* to ensure progress, time-wise, even when rounding	321	* to ensure progress, time-wise, even when rounding
…		…
230		327
231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	328	#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) */	329	#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 */	330	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		331
235	#if __GNUC__ >= 3	332	#if __GNUC__ >= 4
236	# define expect(expr,value) __builtin_expect ((expr),(value))	333	# define expect(expr,value) __builtin_expect ((expr),(value))
237	# define noinline __attribute__ ((noinline))	334	# define noinline __attribute__ ((noinline))
238	#else	335	#else
239	# define expect(expr,value) (expr)	336	# define expect(expr,value) (expr)
240	# define noinline	337	# define noinline
241	# if __STDC_VERSION__ < 199901L	338	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
242	# define inline	339	# define inline
243	# endif	340	# endif
244	#endif	341	#endif
245		342
246	#define expect_false(expr) expect ((expr) != 0, 0)	343	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
261		358
262	typedef ev_watcher *W;	359	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	360	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	361	typedef ev_watcher_time *WT;
265		362
		363	#define ev_active(w) ((W)(w))->active
		364	#define ev_at(w) ((WT)(w))->at
		365
		366	#if EV_USE_MONOTONIC
		367	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		368	/* giving it a reasonably high chance of working on typical architetcures */
266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	369	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		370	#endif
267		371
268	#ifdef _WIN32	372	#ifdef _WIN32
269	# include "ev_win32.c"	373	# include "ev_win32.c"
270	#endif	374	#endif
271		375
…		…
292	perror (msg);	396	perror (msg);
293	abort ();	397	abort ();
294	}	398	}
295	}	399	}
296		400
		401	static void *
		402	ev_realloc_emul (void *ptr, long size)
		403	{
		404	/* some systems, notably openbsd and darwin, fail to properly
		405	* implement realloc (x, 0) (as required by both ansi c-98 and
		406	* the single unix specification, so work around them here.
		407	*/
		408
		409	if (size)
		410	return realloc (ptr, size);
		411
		412	free (ptr);
		413	return 0;
		414	}
		415
297	static void *(*alloc)(void *ptr, long size);	416	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		417
299	void	418	void
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	419	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	420	{
302	alloc = cb;	421	alloc = cb;
303	}	422	}
304		423
305	inline_speed void *	424	inline_speed void *
306	ev_realloc (void *ptr, long size)	425	ev_realloc (void *ptr, long size)
307	{	426	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	427	ptr = alloc (ptr, size);
309		428
310	if (!ptr && size)	429	if (!ptr && size)
311	{	430	{
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	431	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
313	abort ();	432	abort ();
…		…
336	W w;	455	W w;
337	int events;	456	int events;
338	} ANPENDING;	457	} ANPENDING;
339		458
340	#if EV_USE_INOTIFY	459	#if EV_USE_INOTIFY
		460	/* hash table entry per inotify-id */
341	typedef struct	461	typedef struct
342	{	462	{
343	WL head;	463	WL head;
344	} ANFS;	464	} ANFS;
		465	#endif
		466
		467	/* Heap Entry */
		468	#if EV_HEAP_CACHE_AT
		469	typedef struct {
		470	ev_tstamp at;
		471	WT w;
		472	} ANHE;
		473
		474	#define ANHE_w(he) (he).w /* access watcher, read-write */
		475	#define ANHE_at(he) (he).at /* access cached at, read-only */
		476	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		477	#else
		478	typedef WT ANHE;
		479
		480	#define ANHE_w(he) (he)
		481	#define ANHE_at(he) (he)->at
		482	#define ANHE_at_cache(he)
345	#endif	483	#endif
346		484
347	#if EV_MULTIPLICITY	485	#if EV_MULTIPLICITY
348		486
349	struct ev_loop	487	struct ev_loop
…		…
407	{	545	{
408	return ev_rt_now;	546	return ev_rt_now;
409	}	547	}
410	#endif	548	#endif
411		549
		550	void
		551	ev_sleep (ev_tstamp delay)
		552	{
		553	if (delay > 0.)
		554	{
		555	#if EV_USE_NANOSLEEP
		556	struct timespec ts;
		557
		558	ts.tv_sec = (time_t)delay;
		559	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		560
		561	nanosleep (&ts, 0);
		562	#elif defined(_WIN32)
		563	Sleep ((unsigned long)(delay * 1e3));
		564	#else
		565	struct timeval tv;
		566
		567	tv.tv_sec = (time_t)delay;
		568	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		569
		570	select (0, 0, 0, 0, &tv);
		571	#endif
		572	}
		573	}
		574
		575	/*****************************************************************************/
		576
		577	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		578
412	int inline_size	579	int inline_size
413	array_nextsize (int elem, int cur, int cnt)	580	array_nextsize (int elem, int cur, int cnt)
414	{	581	{
415	int ncur = cur + 1;	582	int ncur = cur + 1;
416		583
417	do	584	do
418	ncur <<= 1;	585	ncur <<= 1;
419	while (cnt > ncur);	586	while (cnt > ncur);
420		587
421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	588	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
422	if (elem * ncur > 4096)	589	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	590	{
424	ncur *= elem;	591	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	592	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	593	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	594	ncur /= elem;
428	}	595	}
429		596
430	return ncur;	597	return ncur;
…		…
533	{	700	{
534	int fd = fdchanges [i];	701	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	702	ANFD *anfd = anfds + fd;
536	ev_io *w;	703	ev_io *w;
537		704
538	int events = 0;	705	unsigned char events = 0;
539		706
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	707	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
541	events |= w->events;	708	events |= (unsigned char)w->events;
542		709
543	#if EV_SELECT_IS_WINSOCKET	710	#if EV_SELECT_IS_WINSOCKET
544	if (events)	711	if (events)
545	{	712	{
546	unsigned long argp;	713	unsigned long arg;
		714	#ifdef EV_FD_TO_WIN32_HANDLE
		715	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		716	#else
547	anfd->handle = _get_osfhandle (fd);	717	anfd->handle = _get_osfhandle (fd);
		718	#endif
548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	719	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
549	}	720	}
550	#endif	721	#endif
551		722
		723	{
		724	unsigned char o_events = anfd->events;
		725	unsigned char o_reify = anfd->reify;
		726
552	anfd->reify = 0;	727	anfd->reify = 0;
553
554	backend_modify (EV_A_ fd, anfd->events, events);
555	anfd->events = events;	728	anfd->events = events;
		729
		730	if (o_events != events || o_reify & EV_IOFDSET)
		731	backend_modify (EV_A_ fd, o_events, events);
		732	}
556	}	733	}
557		734
558	fdchangecnt = 0;	735	fdchangecnt = 0;
559	}	736	}
560		737
561	void inline_size	738	void inline_size
562	fd_change (EV_P_ int fd)	739	fd_change (EV_P_ int fd, int flags)
563	{	740	{
564	if (expect_false (anfds [fd].reify))	741	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	742	anfds [fd].reify |= flags;
568		743
		744	if (expect_true (!reify))
		745	{
569	++fdchangecnt;	746	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	747	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	748	fdchanges [fdchangecnt - 1] = fd;
		749	}
572	}	750	}
573		751
574	void inline_speed	752	void inline_speed
575	fd_kill (EV_P_ int fd)	753	fd_kill (EV_P_ int fd)
576	{	754	{
…		…
599	{	777	{
600	int fd;	778	int fd;
601		779
602	for (fd = 0; fd < anfdmax; ++fd)	780	for (fd = 0; fd < anfdmax; ++fd)
603	if (anfds [fd].events)	781	if (anfds [fd].events)
604	if (!fd_valid (fd) == -1 && errno == EBADF)	782	if (!fd_valid (fd) && errno == EBADF)
605	fd_kill (EV_A_ fd);	783	fd_kill (EV_A_ fd);
606	}	784	}
607		785
608	/* called on ENOMEM in select/poll to kill some fds and retry */	786	/* called on ENOMEM in select/poll to kill some fds and retry */
609	static void noinline	787	static void noinline
…		…
627		805
628	for (fd = 0; fd < anfdmax; ++fd)	806	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	807	if (anfds [fd].events)
630	{	808	{
631	anfds [fd].events = 0;	809	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	810	fd_change (EV_A_ fd, EV_IOFDSET | 1);
633	}	811	}
634	}	812	}
635		813
636	/*****************************************************************************/	814	/*****************************************************************************/
637		815
		816	/*
		817	* the heap functions want a real array index. array index 0 uis guaranteed to not
		818	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		819	* the branching factor of the d-tree.
		820	*/
		821
		822	/*
		823	* at the moment we allow libev the luxury of two heaps,
		824	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		825	* which is more cache-efficient.
		826	* the difference is about 5% with 50000+ watchers.
		827	*/
		828	#if EV_USE_4HEAP
		829
		830	#define DHEAP 4
		831	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		832	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		833	#define UPHEAP_DONE(p,k) ((p) == (k))
		834
		835	/* away from the root */
638	void inline_speed	836	void inline_speed
639	upheap (WT *heap, int k)	837	downheap (ANHE *heap, int N, int k)
640	{	838	{
641	WT w = heap [k];	839	ANHE he = heap [k];
		840	ANHE *E = heap + N + HEAP0;
642		841
643	while (k)	842	for (;;)
644	{	843	{
645	int p = (k - 1) >> 1;	844	ev_tstamp minat;
		845	ANHE *minpos;
		846	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
646		847
647	if (heap [p]->at <= w->at)	848	/* find minimum child */
		849	if (expect_true (pos + DHEAP - 1 < E))
		850	{
		851	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		852	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		853	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		854	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		855	}
		856	else if (pos < E)
		857	{
		858	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		859	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		860	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		861	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		862	}
		863	else
648	break;	864	break;
649		865
		866	if (ANHE_at (he) <= minat)
		867	break;
		868
		869	heap [k] = *minpos;
		870	ev_active (ANHE_w (*minpos)) = k;
		871
		872	k = minpos - heap;
		873	}
		874
		875	heap [k] = he;
		876	ev_active (ANHE_w (he)) = k;
		877	}
		878
		879	#else /* 4HEAP */
		880
		881	#define HEAP0 1
		882	#define HPARENT(k) ((k) >> 1)
		883	#define UPHEAP_DONE(p,k) (!(p))
		884
		885	/* away from the root */
		886	void inline_speed
		887	downheap (ANHE *heap, int N, int k)
		888	{
		889	ANHE he = heap [k];
		890
		891	for (;;)
		892	{
		893	int c = k << 1;
		894
		895	if (c > N + HEAP0 - 1)
		896	break;
		897
		898	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		899	? 1 : 0;
		900
		901	if (ANHE_at (he) <= ANHE_at (heap [c]))
		902	break;
		903
		904	heap [k] = heap [c];
		905	ev_active (ANHE_w (heap [k])) = k;
		906
		907	k = c;
		908	}
		909
		910	heap [k] = he;
		911	ev_active (ANHE_w (he)) = k;
		912	}
		913	#endif
		914
		915	/* towards the root */
		916	void inline_speed
		917	upheap (ANHE *heap, int k)
		918	{
		919	ANHE he = heap [k];
		920
		921	for (;;)
		922	{
		923	int p = HPARENT (k);
		924
		925	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		926	break;
		927
650	heap [k] = heap [p];	928	heap [k] = heap [p];
651	((W)heap [k])->active = k + 1;	929	ev_active (ANHE_w (heap [k])) = k;
652	k = p;	930	k = p;
653	}	931	}
654		932
655	heap [k] = w;	933	heap [k] = he;
656	((W)heap [k])->active = k + 1;	934	ev_active (ANHE_w (he)) = k;
657
658	}
659
660	void inline_speed
661	downheap (WT *heap, int N, int k)
662	{
663	WT w = heap [k];
664
665	for (;;)
666	{
667	int c = (k << 1) + 1;
668
669	if (c >= N)
670	break;
671
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673	? 1 : 0;
674
675	if (w->at <= heap [c]->at)
676	break;
677
678	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;
680
681	k = c;
682	}
683
684	heap [k] = w;
685	((W)heap [k])->active = k + 1;
686	}	935	}
687		936
688	void inline_size	937	void inline_size
689	adjustheap (WT *heap, int N, int k)	938	adjustheap (ANHE *heap, int N, int k)
690	{	939	{
		940	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
691	upheap (heap, k);	941	upheap (heap, k);
		942	else
692	downheap (heap, N, k);	943	downheap (heap, N, k);
		944	}
		945
		946	/* rebuild the heap: this function is used only once and executed rarely */
		947	void inline_size
		948	reheap (ANHE *heap, int N)
		949	{
		950	int i;
		951
		952	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		953	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		954	for (i = 0; i < N; ++i)
		955	upheap (heap, i + HEAP0);
693	}	956	}
694		957
695	/*****************************************************************************/	958	/*****************************************************************************/
696		959
697	typedef struct	960	typedef struct
698	{	961	{
699	WL head;	962	WL head;
700	sig_atomic_t volatile gotsig;	963	EV_ATOMIC_T gotsig;
701	} ANSIG;	964	} ANSIG;
702		965
703	static ANSIG *signals;	966	static ANSIG *signals;
704	static int signalmax;	967	static int signalmax;
705		968
706	static int sigpipe [2];	969	static EV_ATOMIC_T gotsig;
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709		970
710	void inline_size	971	void inline_size
711	signals_init (ANSIG *base, int count)	972	signals_init (ANSIG *base, int count)
712	{	973	{
713	while (count--)	974	while (count--)
…		…
717		978
718	++base;	979	++base;
719	}	980	}
720	}	981	}
721		982
722	static void	983	/*****************************************************************************/
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		984
773	void inline_speed	985	void inline_speed
774	fd_intern (int fd)	986	fd_intern (int fd)
775	{	987	{
776	#ifdef _WIN32	988	#ifdef _WIN32
777	int arg = 1;	989	unsigned long arg = 1;
778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	990	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
779	#else	991	#else
780	fcntl (fd, F_SETFD, FD_CLOEXEC);	992	fcntl (fd, F_SETFD, FD_CLOEXEC);
781	fcntl (fd, F_SETFL, O_NONBLOCK);	993	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	994	#endif
783	}	995	}
784		996
785	static void noinline	997	static void noinline
786	siginit (EV_P)	998	evpipe_init (EV_P)
787	{	999	{
		1000	if (!ev_is_active (&pipeev))
		1001	{
		1002	#if EV_USE_EVENTFD
		1003	if ((evfd = eventfd (0, 0)) >= 0)
		1004	{
		1005	evpipe [0] = -1;
		1006	fd_intern (evfd);
		1007	ev_io_set (&pipeev, evfd, EV_READ);
		1008	}
		1009	else
		1010	#endif
		1011	{
		1012	while (pipe (evpipe))
		1013	syserr ("(libev) error creating signal/async pipe");
		1014
788	fd_intern (sigpipe [0]);	1015	fd_intern (evpipe [0]);
789	fd_intern (sigpipe [1]);	1016	fd_intern (evpipe [1]);
		1017	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1018	}
790		1019
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);	1020	ev_io_start (EV_A_ &pipeev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */	1021	ev_unref (EV_A); /* watcher should not keep loop alive */
		1022	}
		1023	}
		1024
		1025	void inline_size
		1026	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1027	{
		1028	if (!*flag)
		1029	{
		1030	int old_errno = errno; /* save errno because write might clobber it */
		1031
		1032	*flag = 1;
		1033
		1034	#if EV_USE_EVENTFD
		1035	if (evfd >= 0)
		1036	{
		1037	uint64_t counter = 1;
		1038	write (evfd, &counter, sizeof (uint64_t));
		1039	}
		1040	else
		1041	#endif
		1042	write (evpipe [1], &old_errno, 1);
		1043
		1044	errno = old_errno;
		1045	}
		1046	}
		1047
		1048	static void
		1049	pipecb (EV_P_ ev_io *iow, int revents)
		1050	{
		1051	#if EV_USE_EVENTFD
		1052	if (evfd >= 0)
		1053	{
		1054	uint64_t counter;
		1055	read (evfd, &counter, sizeof (uint64_t));
		1056	}
		1057	else
		1058	#endif
		1059	{
		1060	char dummy;
		1061	read (evpipe [0], &dummy, 1);
		1062	}
		1063
		1064	if (gotsig && ev_is_default_loop (EV_A))
		1065	{
		1066	int signum;
		1067	gotsig = 0;
		1068
		1069	for (signum = signalmax; signum--; )
		1070	if (signals [signum].gotsig)
		1071	ev_feed_signal_event (EV_A_ signum + 1);
		1072	}
		1073
		1074	#if EV_ASYNC_ENABLE
		1075	if (gotasync)
		1076	{
		1077	int i;
		1078	gotasync = 0;
		1079
		1080	for (i = asynccnt; i--; )
		1081	if (asyncs [i]->sent)
		1082	{
		1083	asyncs [i]->sent = 0;
		1084	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1085	}
		1086	}
		1087	#endif
794	}	1088	}
795		1089
796	/*****************************************************************************/	1090	/*****************************************************************************/
797		1091
		1092	static void
		1093	ev_sighandler (int signum)
		1094	{
		1095	#if EV_MULTIPLICITY
		1096	struct ev_loop *loop = &default_loop_struct;
		1097	#endif
		1098
		1099	#if _WIN32
		1100	signal (signum, ev_sighandler);
		1101	#endif
		1102
		1103	signals [signum - 1].gotsig = 1;
		1104	evpipe_write (EV_A_ &gotsig);
		1105	}
		1106
		1107	void noinline
		1108	ev_feed_signal_event (EV_P_ int signum)
		1109	{
		1110	WL w;
		1111
		1112	#if EV_MULTIPLICITY
		1113	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1114	#endif
		1115
		1116	--signum;
		1117
		1118	if (signum < 0 || signum >= signalmax)
		1119	return;
		1120
		1121	signals [signum].gotsig = 0;
		1122
		1123	for (w = signals [signum].head; w; w = w->next)
		1124	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1125	}
		1126
		1127	/*****************************************************************************/
		1128
798	static ev_child *childs [EV_PID_HASHSIZE];	1129	static WL childs [EV_PID_HASHSIZE];
799		1130
800	#ifndef _WIN32	1131	#ifndef _WIN32
801		1132
802	static ev_signal childev;	1133	static ev_signal childev;
803		1134
		1135	#ifndef WIFCONTINUED
		1136	# define WIFCONTINUED(status) 0
		1137	#endif
		1138
804	void inline_speed	1139	void inline_speed
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1140	child_reap (EV_P_ int chain, int pid, int status)
806	{	1141	{
807	ev_child *w;	1142	ev_child *w;
		1143	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1144
809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1145	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1146	{
810	if (w->pid == pid || !w->pid)	1147	if ((w->pid == pid || !w->pid)
		1148	&& (!traced || (w->flags & 1)))
811	{	1149	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1150	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;	1151	w->rpid = pid;
814	w->rstatus = status;	1152	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1153	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1154	}
		1155	}
817	}	1156	}
818		1157
819	#ifndef WCONTINUED	1158	#ifndef WCONTINUED
820	# define WCONTINUED 0	1159	# define WCONTINUED 0
821	#endif	1160	#endif
…		…
830	if (!WCONTINUED	1169	if (!WCONTINUED
831	|| errno != EINVAL	1170	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1171	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1172	return;
834		1173
835	/* make sure we are called again until all childs have been reaped */	1174	/* 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 */	1175	/* 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);	1176	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1177
839	child_reap (EV_A_ sw, pid, pid, status);	1178	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1179	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 */	1180	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1181	}
843		1182
844	#endif	1183	#endif
845		1184
846	/*****************************************************************************/	1185	/*****************************************************************************/
…		…
918	}	1257	}
919		1258
920	unsigned int	1259	unsigned int
921	ev_embeddable_backends (void)	1260	ev_embeddable_backends (void)
922	{	1261	{
923	return EVBACKEND_EPOLL	1262	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1263
925	| EVBACKEND_PORT;	1264	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1265	/* please fix it and tell me how to detect the fix */
		1266	flags &= ~EVBACKEND_EPOLL;
		1267
		1268	return flags;
926	}	1269	}
927		1270
928	unsigned int	1271	unsigned int
929	ev_backend (EV_P)	1272	ev_backend (EV_P)
930	{	1273	{
…		…
933		1276
934	unsigned int	1277	unsigned int
935	ev_loop_count (EV_P)	1278	ev_loop_count (EV_P)
936	{	1279	{
937	return loop_count;	1280	return loop_count;
		1281	}
		1282
		1283	void
		1284	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1285	{
		1286	io_blocktime = interval;
		1287	}
		1288
		1289	void
		1290	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1291	{
		1292	timeout_blocktime = interval;
938	}	1293	}
939		1294
940	static void noinline	1295	static void noinline
941	loop_init (EV_P_ unsigned int flags)	1296	loop_init (EV_P_ unsigned int flags)
942	{	1297	{
…		…
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1303	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1304	have_monotonic = 1;
950	}	1305	}
951	#endif	1306	#endif
952		1307
953	ev_rt_now = ev_time ();	1308	ev_rt_now = ev_time ();
954	mn_now = get_clock ();	1309	mn_now = get_clock ();
955	now_floor = mn_now;	1310	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;	1311	rtmn_diff = ev_rt_now - mn_now;
		1312
		1313	io_blocktime = 0.;
		1314	timeout_blocktime = 0.;
		1315	backend = 0;
		1316	backend_fd = -1;
		1317	gotasync = 0;
		1318	#if EV_USE_INOTIFY
		1319	fs_fd = -2;
		1320	#endif
957		1321
958	/* pid check not overridable via env */	1322	/* pid check not overridable via env */
959	#ifndef _WIN32	1323	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1324	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1325	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1328	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1329	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1330	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1331	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1332
969	if (!(flags & 0x0000ffffUL))	1333	if (!(flags & 0x0000ffffU))
970	flags |= ev_recommended_backends ();	1334	flags |= ev_recommended_backends ();
971
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY
975	fs_fd = -2;
976	#endif
977		1335
978	#if EV_USE_PORT	1336	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1337	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1338	#endif
981	#if EV_USE_KQUEUE	1339	#if EV_USE_KQUEUE
…		…
989	#endif	1347	#endif
990	#if EV_USE_SELECT	1348	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1349	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1350	#endif
993		1351
994	ev_init (&sigev, sigcb);	1352	ev_init (&pipeev, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1353	ev_set_priority (&pipeev, EV_MAXPRI);
996	}	1354	}
997	}	1355	}
998		1356
999	static void noinline	1357	static void noinline
1000	loop_destroy (EV_P)	1358	loop_destroy (EV_P)
1001	{	1359	{
1002	int i;	1360	int i;
		1361
		1362	if (ev_is_active (&pipeev))
		1363	{
		1364	ev_ref (EV_A); /* signal watcher */
		1365	ev_io_stop (EV_A_ &pipeev);
		1366
		1367	#if EV_USE_EVENTFD
		1368	if (evfd >= 0)
		1369	close (evfd);
		1370	#endif
		1371
		1372	if (evpipe [0] >= 0)
		1373	{
		1374	close (evpipe [0]);
		1375	close (evpipe [1]);
		1376	}
		1377	}
1003		1378
1004	#if EV_USE_INOTIFY	1379	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1380	if (fs_fd >= 0)
1006	close (fs_fd);	1381	close (fs_fd);
1007	#endif	1382	#endif
…		…
1030	array_free (pending, [i]);	1405	array_free (pending, [i]);
1031	#if EV_IDLE_ENABLE	1406	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1407	array_free (idle, [i]);
1033	#endif	1408	#endif
1034	}	1409	}
		1410
		1411	ev_free (anfds); anfdmax = 0;
1035		1412
1036	/* have to use the microsoft-never-gets-it-right macro */	1413	/* have to use the microsoft-never-gets-it-right macro */
1037	array_free (fdchange, EMPTY);	1414	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1415	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1416	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1417	array_free (periodic, EMPTY);
1041	#endif	1418	#endif
		1419	#if EV_FORK_ENABLE
		1420	array_free (fork, EMPTY);
		1421	#endif
1042	array_free (prepare, EMPTY);	1422	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1423	array_free (check, EMPTY);
		1424	#if EV_ASYNC_ENABLE
		1425	array_free (async, EMPTY);
		1426	#endif
1044		1427
1045	backend = 0;	1428	backend = 0;
1046	}	1429	}
1047		1430
		1431	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	1432	void inline_size infy_fork (EV_P);
		1433	#endif
1049		1434
1050	void inline_size	1435	void inline_size
1051	loop_fork (EV_P)	1436	loop_fork (EV_P)
1052	{	1437	{
1053	#if EV_USE_PORT	1438	#if EV_USE_PORT
…		…
1061	#endif	1446	#endif
1062	#if EV_USE_INOTIFY	1447	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	1448	infy_fork (EV_A);
1064	#endif	1449	#endif
1065		1450
1066	if (ev_is_active (&sigev))	1451	if (ev_is_active (&pipeev))
1067	{	1452	{
1068	/* default loop */	1453	/* this "locks" the handlers against writing to the pipe */
		1454	/* while we modify the fd vars */
		1455	gotsig = 1;
		1456	#if EV_ASYNC_ENABLE
		1457	gotasync = 1;
		1458	#endif
1069		1459
1070	ev_ref (EV_A);	1460	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	1461	ev_io_stop (EV_A_ &pipeev);
		1462
		1463	#if EV_USE_EVENTFD
		1464	if (evfd >= 0)
		1465	close (evfd);
		1466	#endif
		1467
		1468	if (evpipe [0] >= 0)
		1469	{
1072	close (sigpipe [0]);	1470	close (evpipe [0]);
1073	close (sigpipe [1]);	1471	close (evpipe [1]);
		1472	}
1074		1473
1075	while (pipe (sigpipe))
1076	syserr ("(libev) error creating pipe");
1077
1078	siginit (EV_A);	1474	evpipe_init (EV_A);
		1475	/* now iterate over everything, in case we missed something */
		1476	pipecb (EV_A_ &pipeev, EV_READ);
1079	}	1477	}
1080		1478
1081	postfork = 0;	1479	postfork = 0;
1082	}	1480	}
1083		1481
1084	#if EV_MULTIPLICITY	1482	#if EV_MULTIPLICITY
		1483
1085	struct ev_loop *	1484	struct ev_loop *
1086	ev_loop_new (unsigned int flags)	1485	ev_loop_new (unsigned int flags)
1087	{	1486	{
1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1487	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089		1488
…		…
1105	}	1504	}
1106		1505
1107	void	1506	void
1108	ev_loop_fork (EV_P)	1507	ev_loop_fork (EV_P)
1109	{	1508	{
1110	postfork = 1;	1509	postfork = 1; /* must be in line with ev_default_fork */
1111	}	1510	}
1112		1511
		1512	#if EV_VERIFY
		1513	void noinline
		1514	verify_watcher (EV_P_ W w)
		1515	{
		1516	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1517
		1518	if (w->pending)
		1519	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1520	}
		1521
		1522	static void noinline
		1523	verify_heap (EV_P_ ANHE *heap, int N)
		1524	{
		1525	int i;
		1526
		1527	for (i = HEAP0; i < N + HEAP0; ++i)
		1528	{
		1529	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1530	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1531	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1532
		1533	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1534	}
		1535	}
		1536
		1537	static void noinline
		1538	array_verify (EV_P_ W *ws, int cnt)
		1539	{
		1540	while (cnt--)
		1541	{
		1542	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1543	verify_watcher (EV_A_ ws [cnt]);
		1544	}
		1545	}
		1546	#endif
		1547
		1548	void
		1549	ev_loop_verify (EV_P)
		1550	{
		1551	#if EV_VERIFY
		1552	int i;
		1553	WL w;
		1554
		1555	assert (activecnt >= -1);
		1556
		1557	assert (fdchangemax >= fdchangecnt);
		1558	for (i = 0; i < fdchangecnt; ++i)
		1559	assert (("negative fd in fdchanges", fdchanges [i] >= 0));
		1560
		1561	assert (anfdmax >= 0);
		1562	for (i = 0; i < anfdmax; ++i)
		1563	for (w = anfds [i].head; w; w = w->next)
		1564	{
		1565	verify_watcher (EV_A_ (W)w);
		1566	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
		1567	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1568	}
		1569
		1570	assert (timermax >= timercnt);
		1571	verify_heap (EV_A_ timers, timercnt);
		1572
		1573	#if EV_PERIODIC_ENABLE
		1574	assert (periodicmax >= periodiccnt);
		1575	verify_heap (EV_A_ periodics, periodiccnt);
		1576	#endif
		1577
		1578	for (i = NUMPRI; i--; )
		1579	{
		1580	assert (pendingmax [i] >= pendingcnt [i]);
		1581	#if EV_IDLE_ENABLE
		1582	assert (idleall >= 0);
		1583	assert (idlemax [i] >= idlecnt [i]);
		1584	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1585	#endif
		1586	}
		1587
		1588	#if EV_FORK_ENABLE
		1589	assert (forkmax >= forkcnt);
		1590	array_verify (EV_A_ (W *)forks, forkcnt);
		1591	#endif
		1592
		1593	#if EV_ASYNC_ENABLE
		1594	assert (asyncmax >= asynccnt);
		1595	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1596	#endif
		1597
		1598	assert (preparemax >= preparecnt);
		1599	array_verify (EV_A_ (W *)prepares, preparecnt);
		1600
		1601	assert (checkmax >= checkcnt);
		1602	array_verify (EV_A_ (W *)checks, checkcnt);
		1603
		1604	# if 0
		1605	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1606	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1113	#endif	1607	# endif
		1608	#endif
		1609	}
		1610
		1611	#endif /* multiplicity */
1114		1612
1115	#if EV_MULTIPLICITY	1613	#if EV_MULTIPLICITY
1116	struct ev_loop *	1614	struct ev_loop *
1117	ev_default_loop_init (unsigned int flags)	1615	ev_default_loop_init (unsigned int flags)
1118	#else	1616	#else
1119	int	1617	int
1120	ev_default_loop (unsigned int flags)	1618	ev_default_loop (unsigned int flags)
1121	#endif	1619	#endif
1122	{	1620	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	1621	if (!ev_default_loop_ptr)
1128	{	1622	{
1129	#if EV_MULTIPLICITY	1623	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1624	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1131	#else	1625	#else
…		…
1134		1628
1135	loop_init (EV_A_ flags);	1629	loop_init (EV_A_ flags);
1136		1630
1137	if (ev_backend (EV_A))	1631	if (ev_backend (EV_A))
1138	{	1632	{
1139	siginit (EV_A);
1140
1141	#ifndef _WIN32	1633	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	1634	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	1635	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	1636	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	1637	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1162	#ifndef _WIN32	1654	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */	1655	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);	1656	ev_signal_stop (EV_A_ &childev);
1165	#endif	1657	#endif
1166		1658
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);	1659	loop_destroy (EV_A);
1174	}	1660	}
1175		1661
1176	void	1662	void
1177	ev_default_fork (void)	1663	ev_default_fork (void)
…		…
1179	#if EV_MULTIPLICITY	1665	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;	1666	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif	1667	#endif
1182		1668
1183	if (backend)	1669	if (backend)
1184	postfork = 1;	1670	postfork = 1; /* must be in line with ev_loop_fork */
1185	}	1671	}
1186		1672
1187	/*****************************************************************************/	1673	/*****************************************************************************/
1188		1674
1189	void	1675	void
…		…
1206	{	1692	{
1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1693	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1208		1694
1209	p->w->pending = 0;	1695	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	1696	EV_CB_INVOKE (p->w, p->events);
		1697	EV_FREQUENT_CHECK;
1211	}	1698	}
1212	}	1699	}
1213	}	1700	}
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		1701
1295	#if EV_IDLE_ENABLE	1702	#if EV_IDLE_ENABLE
1296	void inline_size	1703	void inline_size
1297	idle_reify (EV_P)	1704	idle_reify (EV_P)
1298	{	1705	{
…		…
1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);	1717	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
1311	break;	1718	break;
1312	}	1719	}
1313	}	1720	}
1314	}	1721	}
		1722	}
		1723	#endif
		1724
		1725	void inline_size
		1726	timers_reify (EV_P)
		1727	{
		1728	EV_FREQUENT_CHECK;
		1729
		1730	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1731	{
		1732	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1733
		1734	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1735
		1736	/* first reschedule or stop timer */
		1737	if (w->repeat)
		1738	{
		1739	ev_at (w) += w->repeat;
		1740	if (ev_at (w) < mn_now)
		1741	ev_at (w) = mn_now;
		1742
		1743	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1744
		1745	ANHE_at_cache (timers [HEAP0]);
		1746	downheap (timers, timercnt, HEAP0);
		1747	}
		1748	else
		1749	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1750
		1751	EV_FREQUENT_CHECK;
		1752	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1753	}
		1754	}
		1755
		1756	#if EV_PERIODIC_ENABLE
		1757	void inline_size
		1758	periodics_reify (EV_P)
		1759	{
		1760	EV_FREQUENT_CHECK;
		1761
		1762	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1763	{
		1764	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1765
		1766	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1767
		1768	/* first reschedule or stop timer */
		1769	if (w->reschedule_cb)
		1770	{
		1771	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1772
		1773	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1774
		1775	ANHE_at_cache (periodics [HEAP0]);
		1776	downheap (periodics, periodiccnt, HEAP0);
		1777	}
		1778	else if (w->interval)
		1779	{
		1780	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1781	/* if next trigger time is not sufficiently in the future, put it there */
		1782	/* this might happen because of floating point inexactness */
		1783	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1784	{
		1785	ev_at (w) += w->interval;
		1786
		1787	/* if interval is unreasonably low we might still have a time in the past */
		1788	/* so correct this. this will make the periodic very inexact, but the user */
		1789	/* has effectively asked to get triggered more often than possible */
		1790	if (ev_at (w) < ev_rt_now)
		1791	ev_at (w) = ev_rt_now;
		1792	}
		1793
		1794	ANHE_at_cache (periodics [HEAP0]);
		1795	downheap (periodics, periodiccnt, HEAP0);
		1796	}
		1797	else
		1798	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1799
		1800	EV_FREQUENT_CHECK;
		1801	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1802	}
		1803	}
		1804
		1805	static void noinline
		1806	periodics_reschedule (EV_P)
		1807	{
		1808	int i;
		1809
		1810	/* adjust periodics after time jump */
		1811	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1812	{
		1813	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1814
		1815	if (w->reschedule_cb)
		1816	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1817	else if (w->interval)
		1818	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1819
		1820	ANHE_at_cache (periodics [i]);
		1821	}
		1822
		1823	reheap (periodics, periodiccnt);
1315	}	1824	}
1316	#endif	1825	#endif
1317		1826
1318	void inline_speed	1827	void inline_speed
1319	time_update (EV_P_ ev_tstamp max_block)	1828	time_update (EV_P_ ev_tstamp max_block)
…		…
1348	*/	1857	*/
1349	for (i = 4; --i; )	1858	for (i = 4; --i; )
1350	{	1859	{
1351	rtmn_diff = ev_rt_now - mn_now;	1860	rtmn_diff = ev_rt_now - mn_now;
1352		1861
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1862	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	1863	return; /* all is well */
1355		1864
1356	ev_rt_now = ev_time ();	1865	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	1866	mn_now = get_clock ();
1358	now_floor = mn_now;	1867	now_floor = mn_now;
…		…
1374	#if EV_PERIODIC_ENABLE	1883	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	1884	periodics_reschedule (EV_A);
1376	#endif	1885	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */	1886	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)	1887	for (i = 0; i < timercnt; ++i)
		1888	{
		1889	ANHE *he = timers + i + HEAP0;
1379	((WT)timers [i])->at += ev_rt_now - mn_now;	1890	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1891	ANHE_at_cache (*he);
		1892	}
1380	}	1893	}
1381		1894
1382	mn_now = ev_rt_now;	1895	mn_now = ev_rt_now;
1383	}	1896	}
1384	}	1897	}
…		…
1398	static int loop_done;	1911	static int loop_done;
1399		1912
1400	void	1913	void
1401	ev_loop (EV_P_ int flags)	1914	ev_loop (EV_P_ int flags)
1402	{	1915	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1916	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1917
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1918	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1919
1409	do	1920	do
1410	{	1921	{
		1922	#if EV_VERIFY >= 2
		1923	ev_loop_verify (EV_A);
		1924	#endif
		1925
1411	#ifndef _WIN32	1926	#ifndef _WIN32
1412	if (expect_false (curpid)) /* penalise the forking check even more */	1927	if (expect_false (curpid)) /* penalise the forking check even more */
1413	if (expect_false (getpid () != curpid))	1928	if (expect_false (getpid () != curpid))
1414	{	1929	{
1415	curpid = getpid ();	1930	curpid = getpid ();
…		…
1444	/* update fd-related kernel structures */	1959	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1960	fd_reify (EV_A);
1446		1961
1447	/* calculate blocking time */	1962	/* calculate blocking time */
1448	{	1963	{
1449	ev_tstamp block;	1964	ev_tstamp waittime = 0.;
		1965	ev_tstamp sleeptime = 0.;
1450		1966
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1967	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1968	{
1455	/* update time to cancel out callback processing overhead */	1969	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);	1970	time_update (EV_A_ 1e100);
1457		1971
1458	block = MAX_BLOCKTIME;	1972	waittime = MAX_BLOCKTIME;
1459		1973
1460	if (timercnt)	1974	if (timercnt)
1461	{	1975	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1976	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1463	if (block > to) block = to;	1977	if (waittime > to) waittime = to;
1464	}	1978	}
1465		1979
1466	#if EV_PERIODIC_ENABLE	1980	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	1981	if (periodiccnt)
1468	{	1982	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1983	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1470	if (block > to) block = to;	1984	if (waittime > to) waittime = to;
1471	}	1985	}
1472	#endif	1986	#endif
1473		1987
1474	if (expect_false (block < 0.)) block = 0.;	1988	if (expect_false (waittime < timeout_blocktime))
		1989	waittime = timeout_blocktime;
		1990
		1991	sleeptime = waittime - backend_fudge;
		1992
		1993	if (expect_true (sleeptime > io_blocktime))
		1994	sleeptime = io_blocktime;
		1995
		1996	if (sleeptime)
		1997	{
		1998	ev_sleep (sleeptime);
		1999	waittime -= sleeptime;
		2000	}
1475	}	2001	}
1476		2002
1477	++loop_count;	2003	++loop_count;
1478	backend_poll (EV_A_ block);	2004	backend_poll (EV_A_ waittime);
1479		2005
1480	/* update ev_rt_now, do magic */	2006	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	2007	time_update (EV_A_ waittime + sleeptime);
1482	}	2008	}
1483		2009
1484	/* queue pending timers and reschedule them */	2010	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	2011	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	2012	#if EV_PERIODIC_ENABLE
…		…
1495	/* queue check watchers, to be executed first */	2021	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	2022	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2023	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1498		2024
1499	call_pending (EV_A);	2025	call_pending (EV_A);
1500
1501	}	2026	}
1502	while (expect_true (activecnt && !loop_done));	2027	while (expect_true (
		2028	activecnt
		2029	&& !loop_done
		2030	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2031	));
1503		2032
1504	if (loop_done == EVUNLOOP_ONE)	2033	if (loop_done == EVUNLOOP_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	2034	loop_done = EVUNLOOP_CANCEL;
1506	}	2035	}
1507		2036
…		…
1596	if (expect_false (ev_is_active (w)))	2125	if (expect_false (ev_is_active (w)))
1597	return;	2126	return;
1598		2127
1599	assert (("ev_io_start called with negative fd", fd >= 0));	2128	assert (("ev_io_start called with negative fd", fd >= 0));
1600		2129
		2130	EV_FREQUENT_CHECK;
		2131
1601	ev_start (EV_A_ (W)w, 1);	2132	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2133	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2134	wlist_add (&anfds[fd].head, (WL)w);
1604		2135
1605	fd_change (EV_A_ fd);	2136	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		2137	w->events &= ~EV_IOFDSET;
		2138
		2139	EV_FREQUENT_CHECK;
1606	}	2140	}
1607		2141
1608	void noinline	2142	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	2143	ev_io_stop (EV_P_ ev_io *w)
1610	{	2144	{
1611	clear_pending (EV_A_ (W)w);	2145	clear_pending (EV_A_ (W)w);
1612	if (expect_false (!ev_is_active (w)))	2146	if (expect_false (!ev_is_active (w)))
1613	return;	2147	return;
1614		2148
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2149	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		2150
		2151	EV_FREQUENT_CHECK;
		2152
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2153	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	2154	ev_stop (EV_A_ (W)w);
1619		2155
1620	fd_change (EV_A_ w->fd);	2156	fd_change (EV_A_ w->fd, 1);
		2157
		2158	EV_FREQUENT_CHECK;
1621	}	2159	}
1622		2160
1623	void noinline	2161	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	2162	ev_timer_start (EV_P_ ev_timer *w)
1625	{	2163	{
1626	if (expect_false (ev_is_active (w)))	2164	if (expect_false (ev_is_active (w)))
1627	return;	2165	return;
1628		2166
1629	((WT)w)->at += mn_now;	2167	ev_at (w) += mn_now;
1630		2168
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2169	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		2170
		2171	EV_FREQUENT_CHECK;
		2172
		2173	++timercnt;
1633	ev_start (EV_A_ (W)w, ++timercnt);	2174	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2175	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1635	timers [timercnt - 1] = w;	2176	ANHE_w (timers [ev_active (w)]) = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	2177	ANHE_at_cache (timers [ev_active (w)]);
		2178	upheap (timers, ev_active (w));
1637		2179
		2180	EV_FREQUENT_CHECK;
		2181
1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2182	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1639	}	2183	}
1640		2184
1641	void noinline	2185	void noinline
1642	ev_timer_stop (EV_P_ ev_timer *w)	2186	ev_timer_stop (EV_P_ ev_timer *w)
1643	{	2187	{
1644	clear_pending (EV_A_ (W)w);	2188	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	2189	if (expect_false (!ev_is_active (w)))
1646	return;	2190	return;
1647		2191
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2192	EV_FREQUENT_CHECK;
1649		2193
1650	{	2194	{
1651	int active = ((W)w)->active;	2195	int active = ev_active (w);
1652		2196
		2197	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2198
		2199	--timercnt;
		2200
1653	if (expect_true (--active < --timercnt))	2201	if (expect_true (active < timercnt + HEAP0))
1654	{	2202	{
1655	timers [active] = timers [timercnt];	2203	timers [active] = timers [timercnt + HEAP0];
1656	adjustheap ((WT *)timers, timercnt, active);	2204	adjustheap (timers, timercnt, active);
1657	}	2205	}
1658	}	2206	}
1659		2207
1660	((WT)w)->at -= mn_now;	2208	EV_FREQUENT_CHECK;
		2209
		2210	ev_at (w) -= mn_now;
1661		2211
1662	ev_stop (EV_A_ (W)w);	2212	ev_stop (EV_A_ (W)w);
1663	}	2213	}
1664		2214
1665	void noinline	2215	void noinline
1666	ev_timer_again (EV_P_ ev_timer *w)	2216	ev_timer_again (EV_P_ ev_timer *w)
1667	{	2217	{
		2218	EV_FREQUENT_CHECK;
		2219
1668	if (ev_is_active (w))	2220	if (ev_is_active (w))
1669	{	2221	{
1670	if (w->repeat)	2222	if (w->repeat)
1671	{	2223	{
1672	((WT)w)->at = mn_now + w->repeat;	2224	ev_at (w) = mn_now + w->repeat;
		2225	ANHE_at_cache (timers [ev_active (w)]);
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2226	adjustheap (timers, timercnt, ev_active (w));
1674	}	2227	}
1675	else	2228	else
1676	ev_timer_stop (EV_A_ w);	2229	ev_timer_stop (EV_A_ w);
1677	}	2230	}
1678	else if (w->repeat)	2231	else if (w->repeat)
1679	{	2232	{
1680	w->at = w->repeat;	2233	ev_at (w) = w->repeat;
1681	ev_timer_start (EV_A_ w);	2234	ev_timer_start (EV_A_ w);
1682	}	2235	}
		2236
		2237	EV_FREQUENT_CHECK;
1683	}	2238	}
1684		2239
1685	#if EV_PERIODIC_ENABLE	2240	#if EV_PERIODIC_ENABLE
1686	void noinline	2241	void noinline
1687	ev_periodic_start (EV_P_ ev_periodic *w)	2242	ev_periodic_start (EV_P_ ev_periodic *w)
1688	{	2243	{
1689	if (expect_false (ev_is_active (w)))	2244	if (expect_false (ev_is_active (w)))
1690	return;	2245	return;
1691		2246
1692	if (w->reschedule_cb)	2247	if (w->reschedule_cb)
1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2248	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1694	else if (w->interval)	2249	else if (w->interval)
1695	{	2250	{
1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2251	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 */	2252	/* 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;	2253	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699	}	2254	}
1700	else	2255	else
1701	((WT)w)->at = w->offset;	2256	ev_at (w) = w->offset;
1702		2257
		2258	EV_FREQUENT_CHECK;
		2259
		2260	++periodiccnt;
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	2261	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2262	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	2263	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	2264	ANHE_at_cache (periodics [ev_active (w)]);
		2265	upheap (periodics, ev_active (w));
1707		2266
		2267	EV_FREQUENT_CHECK;
		2268
1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2269	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1709	}	2270	}
1710		2271
1711	void noinline	2272	void noinline
1712	ev_periodic_stop (EV_P_ ev_periodic *w)	2273	ev_periodic_stop (EV_P_ ev_periodic *w)
1713	{	2274	{
1714	clear_pending (EV_A_ (W)w);	2275	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	2276	if (expect_false (!ev_is_active (w)))
1716	return;	2277	return;
1717		2278
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2279	EV_FREQUENT_CHECK;
1719		2280
1720	{	2281	{
1721	int active = ((W)w)->active;	2282	int active = ev_active (w);
1722		2283
		2284	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2285
		2286	--periodiccnt;
		2287
1723	if (expect_true (--active < --periodiccnt))	2288	if (expect_true (active < periodiccnt + HEAP0))
1724	{	2289	{
1725	periodics [active] = periodics [periodiccnt];	2290	periodics [active] = periodics [periodiccnt + HEAP0];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	2291	adjustheap (periodics, periodiccnt, active);
1727	}	2292	}
1728	}	2293	}
		2294
		2295	EV_FREQUENT_CHECK;
1729		2296
1730	ev_stop (EV_A_ (W)w);	2297	ev_stop (EV_A_ (W)w);
1731	}	2298	}
1732		2299
1733	void noinline	2300	void noinline
…		…
1751	#endif	2318	#endif
1752	if (expect_false (ev_is_active (w)))	2319	if (expect_false (ev_is_active (w)))
1753	return;	2320	return;
1754		2321
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2322	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		2323
		2324	evpipe_init (EV_A);
		2325
		2326	EV_FREQUENT_CHECK;
1756		2327
1757	{	2328	{
1758	#ifndef _WIN32	2329	#ifndef _WIN32
1759	sigset_t full, prev;	2330	sigset_t full, prev;
1760	sigfillset (&full);	2331	sigfillset (&full);
…		…
1767	sigprocmask (SIG_SETMASK, &prev, 0);	2338	sigprocmask (SIG_SETMASK, &prev, 0);
1768	#endif	2339	#endif
1769	}	2340	}
1770		2341
1771	ev_start (EV_A_ (W)w, 1);	2342	ev_start (EV_A_ (W)w, 1);
1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2343	wlist_add (&signals [w->signum - 1].head, (WL)w);
1773		2344
1774	if (!((WL)w)->next)	2345	if (!((WL)w)->next)
1775	{	2346	{
1776	#if _WIN32	2347	#if _WIN32
1777	signal (w->signum, sighandler);	2348	signal (w->signum, ev_sighandler);
1778	#else	2349	#else
1779	struct sigaction sa;	2350	struct sigaction sa;
1780	sa.sa_handler = sighandler;	2351	sa.sa_handler = ev_sighandler;
1781	sigfillset (&sa.sa_mask);	2352	sigfillset (&sa.sa_mask);
1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2353	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1783	sigaction (w->signum, &sa, 0);	2354	sigaction (w->signum, &sa, 0);
1784	#endif	2355	#endif
1785	}	2356	}
		2357
		2358	EV_FREQUENT_CHECK;
1786	}	2359	}
1787		2360
1788	void noinline	2361	void noinline
1789	ev_signal_stop (EV_P_ ev_signal *w)	2362	ev_signal_stop (EV_P_ ev_signal *w)
1790	{	2363	{
1791	clear_pending (EV_A_ (W)w);	2364	clear_pending (EV_A_ (W)w);
1792	if (expect_false (!ev_is_active (w)))	2365	if (expect_false (!ev_is_active (w)))
1793	return;	2366	return;
1794		2367
		2368	EV_FREQUENT_CHECK;
		2369
1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2370	wlist_del (&signals [w->signum - 1].head, (WL)w);
1796	ev_stop (EV_A_ (W)w);	2371	ev_stop (EV_A_ (W)w);
1797		2372
1798	if (!signals [w->signum - 1].head)	2373	if (!signals [w->signum - 1].head)
1799	signal (w->signum, SIG_DFL);	2374	signal (w->signum, SIG_DFL);
		2375
		2376	EV_FREQUENT_CHECK;
1800	}	2377	}
1801		2378
1802	void	2379	void
1803	ev_child_start (EV_P_ ev_child *w)	2380	ev_child_start (EV_P_ ev_child *w)
1804	{	2381	{
…		…
1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2383	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1807	#endif	2384	#endif
1808	if (expect_false (ev_is_active (w)))	2385	if (expect_false (ev_is_active (w)))
1809	return;	2386	return;
1810		2387
		2388	EV_FREQUENT_CHECK;
		2389
1811	ev_start (EV_A_ (W)w, 1);	2390	ev_start (EV_A_ (W)w, 1);
1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2391	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2392
		2393	EV_FREQUENT_CHECK;
1813	}	2394	}
1814		2395
1815	void	2396	void
1816	ev_child_stop (EV_P_ ev_child *w)	2397	ev_child_stop (EV_P_ ev_child *w)
1817	{	2398	{
1818	clear_pending (EV_A_ (W)w);	2399	clear_pending (EV_A_ (W)w);
1819	if (expect_false (!ev_is_active (w)))	2400	if (expect_false (!ev_is_active (w)))
1820	return;	2401	return;
1821		2402
		2403	EV_FREQUENT_CHECK;
		2404
1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2405	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1823	ev_stop (EV_A_ (W)w);	2406	ev_stop (EV_A_ (W)w);
		2407
		2408	EV_FREQUENT_CHECK;
1824	}	2409	}
1825		2410
1826	#if EV_STAT_ENABLE	2411	#if EV_STAT_ENABLE
1827		2412
1828	# ifdef _WIN32	2413	# ifdef _WIN32
…		…
1846	if (w->wd < 0)	2431	if (w->wd < 0)
1847	{	2432	{
1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2433	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1849		2434
1850	/* monitor some parent directory for speedup hints */	2435	/* monitor some parent directory for speedup hints */
		2436	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2437	/* but an efficiency issue only */
1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2438	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1852	{	2439	{
1853	char path [4096];	2440	char path [4096];
1854	strcpy (path, w->path);	2441	strcpy (path, w->path);
1855		2442
…		…
1981	}	2568	}
1982		2569
1983	}	2570	}
1984	}	2571	}
1985		2572
		2573	#endif
		2574
		2575	#ifdef _WIN32
		2576	# define EV_LSTAT(p,b) _stati64 (p, b)
		2577	#else
		2578	# define EV_LSTAT(p,b) lstat (p, b)
1986	#endif	2579	#endif
1987		2580
1988	void	2581	void
1989	ev_stat_stat (EV_P_ ev_stat *w)	2582	ev_stat_stat (EV_P_ ev_stat *w)
1990	{	2583	{
…		…
2054	else	2647	else
2055	#endif	2648	#endif
2056	ev_timer_start (EV_A_ &w->timer);	2649	ev_timer_start (EV_A_ &w->timer);
2057		2650
2058	ev_start (EV_A_ (W)w, 1);	2651	ev_start (EV_A_ (W)w, 1);
		2652
		2653	EV_FREQUENT_CHECK;
2059	}	2654	}
2060		2655
2061	void	2656	void
2062	ev_stat_stop (EV_P_ ev_stat *w)	2657	ev_stat_stop (EV_P_ ev_stat *w)
2063	{	2658	{
2064	clear_pending (EV_A_ (W)w);	2659	clear_pending (EV_A_ (W)w);
2065	if (expect_false (!ev_is_active (w)))	2660	if (expect_false (!ev_is_active (w)))
2066	return;	2661	return;
2067		2662
		2663	EV_FREQUENT_CHECK;
		2664
2068	#if EV_USE_INOTIFY	2665	#if EV_USE_INOTIFY
2069	infy_del (EV_A_ w);	2666	infy_del (EV_A_ w);
2070	#endif	2667	#endif
2071	ev_timer_stop (EV_A_ &w->timer);	2668	ev_timer_stop (EV_A_ &w->timer);
2072		2669
2073	ev_stop (EV_A_ (W)w);	2670	ev_stop (EV_A_ (W)w);
		2671
		2672	EV_FREQUENT_CHECK;
2074	}	2673	}
2075	#endif	2674	#endif
2076		2675
2077	#if EV_IDLE_ENABLE	2676	#if EV_IDLE_ENABLE
2078	void	2677	void
…		…
2080	{	2679	{
2081	if (expect_false (ev_is_active (w)))	2680	if (expect_false (ev_is_active (w)))
2082	return;	2681	return;
2083		2682
2084	pri_adjust (EV_A_ (W)w);	2683	pri_adjust (EV_A_ (W)w);
		2684
		2685	EV_FREQUENT_CHECK;
2085		2686
2086	{	2687	{
2087	int active = ++idlecnt [ABSPRI (w)];	2688	int active = ++idlecnt [ABSPRI (w)];
2088		2689
2089	++idleall;	2690	++idleall;
2090	ev_start (EV_A_ (W)w, active);	2691	ev_start (EV_A_ (W)w, active);
2091		2692
2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2693	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2093	idles [ABSPRI (w)][active - 1] = w;	2694	idles [ABSPRI (w)][active - 1] = w;
2094	}	2695	}
		2696
		2697	EV_FREQUENT_CHECK;
2095	}	2698	}
2096		2699
2097	void	2700	void
2098	ev_idle_stop (EV_P_ ev_idle *w)	2701	ev_idle_stop (EV_P_ ev_idle *w)
2099	{	2702	{
2100	clear_pending (EV_A_ (W)w);	2703	clear_pending (EV_A_ (W)w);
2101	if (expect_false (!ev_is_active (w)))	2704	if (expect_false (!ev_is_active (w)))
2102	return;	2705	return;
2103		2706
		2707	EV_FREQUENT_CHECK;
		2708
2104	{	2709	{
2105	int active = ((W)w)->active;	2710	int active = ev_active (w);
2106		2711
2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2712	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2108	((W)idles [ABSPRI (w)][active - 1])->active = active;	2713	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2109		2714
2110	ev_stop (EV_A_ (W)w);	2715	ev_stop (EV_A_ (W)w);
2111	--idleall;	2716	--idleall;
2112	}	2717	}
		2718
		2719	EV_FREQUENT_CHECK;
2113	}	2720	}
2114	#endif	2721	#endif
2115		2722
2116	void	2723	void
2117	ev_prepare_start (EV_P_ ev_prepare *w)	2724	ev_prepare_start (EV_P_ ev_prepare *w)
2118	{	2725	{
2119	if (expect_false (ev_is_active (w)))	2726	if (expect_false (ev_is_active (w)))
2120	return;	2727	return;
		2728
		2729	EV_FREQUENT_CHECK;
2121		2730
2122	ev_start (EV_A_ (W)w, ++preparecnt);	2731	ev_start (EV_A_ (W)w, ++preparecnt);
2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2732	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2124	prepares [preparecnt - 1] = w;	2733	prepares [preparecnt - 1] = w;
		2734
		2735	EV_FREQUENT_CHECK;
2125	}	2736	}
2126		2737
2127	void	2738	void
2128	ev_prepare_stop (EV_P_ ev_prepare *w)	2739	ev_prepare_stop (EV_P_ ev_prepare *w)
2129	{	2740	{
2130	clear_pending (EV_A_ (W)w);	2741	clear_pending (EV_A_ (W)w);
2131	if (expect_false (!ev_is_active (w)))	2742	if (expect_false (!ev_is_active (w)))
2132	return;	2743	return;
2133		2744
		2745	EV_FREQUENT_CHECK;
		2746
2134	{	2747	{
2135	int active = ((W)w)->active;	2748	int active = ev_active (w);
		2749
2136	prepares [active - 1] = prepares [--preparecnt];	2750	prepares [active - 1] = prepares [--preparecnt];
2137	((W)prepares [active - 1])->active = active;	2751	ev_active (prepares [active - 1]) = active;
2138	}	2752	}
2139		2753
2140	ev_stop (EV_A_ (W)w);	2754	ev_stop (EV_A_ (W)w);
		2755
		2756	EV_FREQUENT_CHECK;
2141	}	2757	}
2142		2758
2143	void	2759	void
2144	ev_check_start (EV_P_ ev_check *w)	2760	ev_check_start (EV_P_ ev_check *w)
2145	{	2761	{
2146	if (expect_false (ev_is_active (w)))	2762	if (expect_false (ev_is_active (w)))
2147	return;	2763	return;
		2764
		2765	EV_FREQUENT_CHECK;
2148		2766
2149	ev_start (EV_A_ (W)w, ++checkcnt);	2767	ev_start (EV_A_ (W)w, ++checkcnt);
2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2768	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2151	checks [checkcnt - 1] = w;	2769	checks [checkcnt - 1] = w;
		2770
		2771	EV_FREQUENT_CHECK;
2152	}	2772	}
2153		2773
2154	void	2774	void
2155	ev_check_stop (EV_P_ ev_check *w)	2775	ev_check_stop (EV_P_ ev_check *w)
2156	{	2776	{
2157	clear_pending (EV_A_ (W)w);	2777	clear_pending (EV_A_ (W)w);
2158	if (expect_false (!ev_is_active (w)))	2778	if (expect_false (!ev_is_active (w)))
2159	return;	2779	return;
2160		2780
		2781	EV_FREQUENT_CHECK;
		2782
2161	{	2783	{
2162	int active = ((W)w)->active;	2784	int active = ev_active (w);
		2785
2163	checks [active - 1] = checks [--checkcnt];	2786	checks [active - 1] = checks [--checkcnt];
2164	((W)checks [active - 1])->active = active;	2787	ev_active (checks [active - 1]) = active;
2165	}	2788	}
2166		2789
2167	ev_stop (EV_A_ (W)w);	2790	ev_stop (EV_A_ (W)w);
		2791
		2792	EV_FREQUENT_CHECK;
2168	}	2793	}
2169		2794
2170	#if EV_EMBED_ENABLE	2795	#if EV_EMBED_ENABLE
2171	void noinline	2796	void noinline
2172	ev_embed_sweep (EV_P_ ev_embed *w)	2797	ev_embed_sweep (EV_P_ ev_embed *w)
2173	{	2798	{
2174	ev_loop (w->loop, EVLOOP_NONBLOCK);	2799	ev_loop (w->other, EVLOOP_NONBLOCK);
2175	}	2800	}
2176		2801
2177	static void	2802	static void
2178	embed_cb (EV_P_ ev_io *io, int revents)	2803	embed_io_cb (EV_P_ ev_io *io, int revents)
2179	{	2804	{
2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2805	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2181		2806
2182	if (ev_cb (w))	2807	if (ev_cb (w))
2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2808	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2184	else	2809	else
2185	ev_embed_sweep (loop, w);	2810	ev_loop (w->other, EVLOOP_NONBLOCK);
2186	}	2811	}
		2812
		2813	static void
		2814	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2815	{
		2816	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2817
		2818	{
		2819	struct ev_loop *loop = w->other;
		2820
		2821	while (fdchangecnt)
		2822	{
		2823	fd_reify (EV_A);
		2824	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2825	}
		2826	}
		2827	}
		2828
		2829	#if 0
		2830	static void
		2831	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2832	{
		2833	ev_idle_stop (EV_A_ idle);
		2834	}
		2835	#endif
2187		2836
2188	void	2837	void
2189	ev_embed_start (EV_P_ ev_embed *w)	2838	ev_embed_start (EV_P_ ev_embed *w)
2190	{	2839	{
2191	if (expect_false (ev_is_active (w)))	2840	if (expect_false (ev_is_active (w)))
2192	return;	2841	return;
2193		2842
2194	{	2843	{
2195	struct ev_loop *loop = w->loop;	2844	struct ev_loop *loop = w->other;
2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2845	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2846	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2198	}	2847	}
		2848
		2849	EV_FREQUENT_CHECK;
2199		2850
2200	ev_set_priority (&w->io, ev_priority (w));	2851	ev_set_priority (&w->io, ev_priority (w));
2201	ev_io_start (EV_A_ &w->io);	2852	ev_io_start (EV_A_ &w->io);
2202		2853
		2854	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2855	ev_set_priority (&w->prepare, EV_MINPRI);
		2856	ev_prepare_start (EV_A_ &w->prepare);
		2857
		2858	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2859
2203	ev_start (EV_A_ (W)w, 1);	2860	ev_start (EV_A_ (W)w, 1);
		2861
		2862	EV_FREQUENT_CHECK;
2204	}	2863	}
2205		2864
2206	void	2865	void
2207	ev_embed_stop (EV_P_ ev_embed *w)	2866	ev_embed_stop (EV_P_ ev_embed *w)
2208	{	2867	{
2209	clear_pending (EV_A_ (W)w);	2868	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2869	if (expect_false (!ev_is_active (w)))
2211	return;	2870	return;
2212		2871
		2872	EV_FREQUENT_CHECK;
		2873
2213	ev_io_stop (EV_A_ &w->io);	2874	ev_io_stop (EV_A_ &w->io);
		2875	ev_prepare_stop (EV_A_ &w->prepare);
2214		2876
2215	ev_stop (EV_A_ (W)w);	2877	ev_stop (EV_A_ (W)w);
		2878
		2879	EV_FREQUENT_CHECK;
2216	}	2880	}
2217	#endif	2881	#endif
2218		2882
2219	#if EV_FORK_ENABLE	2883	#if EV_FORK_ENABLE
2220	void	2884	void
2221	ev_fork_start (EV_P_ ev_fork *w)	2885	ev_fork_start (EV_P_ ev_fork *w)
2222	{	2886	{
2223	if (expect_false (ev_is_active (w)))	2887	if (expect_false (ev_is_active (w)))
2224	return;	2888	return;
		2889
		2890	EV_FREQUENT_CHECK;
2225		2891
2226	ev_start (EV_A_ (W)w, ++forkcnt);	2892	ev_start (EV_A_ (W)w, ++forkcnt);
2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2893	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2228	forks [forkcnt - 1] = w;	2894	forks [forkcnt - 1] = w;
		2895
		2896	EV_FREQUENT_CHECK;
2229	}	2897	}
2230		2898
2231	void	2899	void
2232	ev_fork_stop (EV_P_ ev_fork *w)	2900	ev_fork_stop (EV_P_ ev_fork *w)
2233	{	2901	{
2234	clear_pending (EV_A_ (W)w);	2902	clear_pending (EV_A_ (W)w);
2235	if (expect_false (!ev_is_active (w)))	2903	if (expect_false (!ev_is_active (w)))
2236	return;	2904	return;
2237		2905
		2906	EV_FREQUENT_CHECK;
		2907
2238	{	2908	{
2239	int active = ((W)w)->active;	2909	int active = ev_active (w);
		2910
2240	forks [active - 1] = forks [--forkcnt];	2911	forks [active - 1] = forks [--forkcnt];
2241	((W)forks [active - 1])->active = active;	2912	ev_active (forks [active - 1]) = active;
2242	}	2913	}
2243		2914
2244	ev_stop (EV_A_ (W)w);	2915	ev_stop (EV_A_ (W)w);
		2916
		2917	EV_FREQUENT_CHECK;
		2918	}
		2919	#endif
		2920
		2921	#if EV_ASYNC_ENABLE
		2922	void
		2923	ev_async_start (EV_P_ ev_async *w)
		2924	{
		2925	if (expect_false (ev_is_active (w)))
		2926	return;
		2927
		2928	evpipe_init (EV_A);
		2929
		2930	EV_FREQUENT_CHECK;
		2931
		2932	ev_start (EV_A_ (W)w, ++asynccnt);
		2933	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2934	asyncs [asynccnt - 1] = w;
		2935
		2936	EV_FREQUENT_CHECK;
		2937	}
		2938
		2939	void
		2940	ev_async_stop (EV_P_ ev_async *w)
		2941	{
		2942	clear_pending (EV_A_ (W)w);
		2943	if (expect_false (!ev_is_active (w)))
		2944	return;
		2945
		2946	EV_FREQUENT_CHECK;
		2947
		2948	{
		2949	int active = ev_active (w);
		2950
		2951	asyncs [active - 1] = asyncs [--asynccnt];
		2952	ev_active (asyncs [active - 1]) = active;
		2953	}
		2954
		2955	ev_stop (EV_A_ (W)w);
		2956
		2957	EV_FREQUENT_CHECK;
		2958	}
		2959
		2960	void
		2961	ev_async_send (EV_P_ ev_async *w)
		2962	{
		2963	w->sent = 1;
		2964	evpipe_write (EV_A_ &gotasync);
2245	}	2965	}
2246	#endif	2966	#endif
2247		2967
2248	/*****************************************************************************/	2968	/*****************************************************************************/
2249		2969
…		…
2307	ev_timer_set (&once->to, timeout, 0.);	3027	ev_timer_set (&once->to, timeout, 0.);
2308	ev_timer_start (EV_A_ &once->to);	3028	ev_timer_start (EV_A_ &once->to);
2309	}	3029	}
2310	}	3030	}
2311		3031
		3032	#if EV_MULTIPLICITY
		3033	#include "ev_wrap.h"
		3034	#endif
		3035
2312	#ifdef __cplusplus	3036	#ifdef __cplusplus
2313	}	3037	}
2314	#endif	3038	#endif
2315		3039

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