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Comparing libev/ev.c (file contents):
Revision 1.166 by root, Sat Dec 8 03:53:36 2007 UTC vs.
Revision 1.252 by root, Thu May 22 03:43:32 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	#if 0 /* debugging */
		241	# define EV_VERIFY 3
		242	# define EV_USE_4HEAP 1
		243	# define EV_HEAP_CACHE_AT 1
		244	#endif
		245
		246	#ifndef EV_VERIFY
		247	# define EV_VERIFY !EV_MINIMAL
		248	#endif
		249
		250	#ifndef EV_USE_4HEAP
		251	# define EV_USE_4HEAP !EV_MINIMAL
		252	#endif
		253
		254	#ifndef EV_HEAP_CACHE_AT
		255	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		256	#endif
		257
		258	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		259
197	#ifndef CLOCK_MONOTONIC	260	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	261	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	262	# define EV_USE_MONOTONIC 0
200	#endif	263	#endif
…		…
202	#ifndef CLOCK_REALTIME	265	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	266	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	267	# define EV_USE_REALTIME 0
205	#endif	268	#endif
206		269
		270	#if !EV_STAT_ENABLE
		271	# undef EV_USE_INOTIFY
		272	# define EV_USE_INOTIFY 0
		273	#endif
		274
		275	#if !EV_USE_NANOSLEEP
		276	# ifndef _WIN32
		277	# include <sys/select.h>
		278	# endif
		279	#endif
		280
		281	#if EV_USE_INOTIFY
		282	# include <sys/inotify.h>
		283	#endif
		284
207	#if EV_SELECT_IS_WINSOCKET	285	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	286	# include <winsock.h>
209	#endif	287	#endif
210		288
211	#if !EV_STAT_ENABLE	289	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	290	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		291	# include <stdint.h>
		292	# ifdef __cplusplus
		293	extern "C" {
213	#endif	294	# endif
214		295	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	296	# ifdef __cplusplus
216	# include <sys/inotify.h>	297	}
		298	# endif
217	#endif	299	#endif
218		300
219	/**/	301	/**/
		302
		303	#if EV_VERIFY >= 3
		304	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		305	#else
		306	# define EV_FREQUENT_CHECK do { } while (0)
		307	#endif
		308
		309	/*
		310	* This is used to avoid floating point rounding problems.
		311	* It is added to ev_rt_now when scheduling periodics
		312	* to ensure progress, time-wise, even when rounding
		313	* errors are against us.
		314	* This value is good at least till the year 4000.
		315	* Better solutions welcome.
		316	*/
		317	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		318
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	319	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	320	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	321	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224		322
225	#if __GNUC__ >= 3	323	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	324	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	325	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	326	#else
236	# define expect(expr,value) (expr)	327	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	328	# define noinline
		329	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		330	# define inline
		331	# endif
240	#endif	332	#endif
241		333
242	#define expect_false(expr) expect ((expr) != 0, 0)	334	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	335	#define expect_true(expr) expect ((expr) != 0, 1)
		336	#define inline_size static inline
		337
		338	#if EV_MINIMAL
		339	# define inline_speed static noinline
		340	#else
		341	# define inline_speed static inline
		342	#endif
244		343
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	344	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	345	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		346
248	#define EMPTY /* required for microsofts broken pseudo-c compiler */	347	#define EMPTY /* required for microsofts broken pseudo-c compiler */
…		…
250		349
251	typedef ev_watcher *W;	350	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	351	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	352	typedef ev_watcher_time *WT;
254		353
		354	#define ev_active(w) ((W)(w))->active
		355	#define ev_at(w) ((WT)(w))->at
		356
		357	#if EV_USE_MONOTONIC
		358	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		359	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	360	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		361	#endif
256		362
257	#ifdef _WIN32	363	#ifdef _WIN32
258	# include "ev_win32.c"	364	# include "ev_win32.c"
259	#endif	365	#endif
260		366
…		…
281	perror (msg);	387	perror (msg);
282	abort ();	388	abort ();
283	}	389	}
284	}	390	}
285		391
		392	static void *
		393	ev_realloc_emul (void *ptr, long size)
		394	{
		395	/* some systems, notably openbsd and darwin, fail to properly
		396	* implement realloc (x, 0) (as required by both ansi c-98 and
		397	* the single unix specification, so work around them here.
		398	*/
		399
		400	if (size)
		401	return realloc (ptr, size);
		402
		403	free (ptr);
		404	return 0;
		405	}
		406
286	static void *(*alloc)(void *ptr, long size);	407	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287		408
288	void	409	void
289	ev_set_allocator (void *(*cb)(void *ptr, long size))	410	ev_set_allocator (void *(*cb)(void *ptr, long size))
290	{	411	{
291	alloc = cb;	412	alloc = cb;
292	}	413	}
293		414
294	inline_speed void *	415	inline_speed void *
295	ev_realloc (void *ptr, long size)	416	ev_realloc (void *ptr, long size)
296	{	417	{
297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	418	ptr = alloc (ptr, size);
298		419
299	if (!ptr && size)	420	if (!ptr && size)
300	{	421	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	422	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	423	abort ();
…		…
325	W w;	446	W w;
326	int events;	447	int events;
327	} ANPENDING;	448	} ANPENDING;
328		449
329	#if EV_USE_INOTIFY	450	#if EV_USE_INOTIFY
		451	/* hash table entry per inotify-id */
330	typedef struct	452	typedef struct
331	{	453	{
332	WL head;	454	WL head;
333	} ANFS;	455	} ANFS;
		456	#endif
		457
		458	/* Heap Entry */
		459	#if EV_HEAP_CACHE_AT
		460	typedef struct {
		461	ev_tstamp at;
		462	WT w;
		463	} ANHE;
		464
		465	#define ANHE_w(he) (he).w /* access watcher, read-write */
		466	#define ANHE_at(he) (he).at /* access cached at, read-only */
		467	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		468	#else
		469	typedef WT ANHE;
		470
		471	#define ANHE_w(he) (he)
		472	#define ANHE_at(he) (he)->at
		473	#define ANHE_at_cache(he)
334	#endif	474	#endif
335		475
336	#if EV_MULTIPLICITY	476	#if EV_MULTIPLICITY
337		477
338	struct ev_loop	478	struct ev_loop
…		…
396	{	536	{
397	return ev_rt_now;	537	return ev_rt_now;
398	}	538	}
399	#endif	539	#endif
400		540
		541	void
		542	ev_sleep (ev_tstamp delay)
		543	{
		544	if (delay > 0.)
		545	{
		546	#if EV_USE_NANOSLEEP
		547	struct timespec ts;
		548
		549	ts.tv_sec = (time_t)delay;
		550	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		551
		552	nanosleep (&ts, 0);
		553	#elif defined(_WIN32)
		554	Sleep ((unsigned long)(delay * 1e3));
		555	#else
		556	struct timeval tv;
		557
		558	tv.tv_sec = (time_t)delay;
		559	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		560
		561	select (0, 0, 0, 0, &tv);
		562	#endif
		563	}
		564	}
		565
		566	/*****************************************************************************/
		567
		568	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		569
401	int inline_size	570	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	571	array_nextsize (int elem, int cur, int cnt)
403	{	572	{
404	int ncur = cur + 1;	573	int ncur = cur + 1;
405		574
406	do	575	do
407	ncur <<= 1;	576	ncur <<= 1;
408	while (cnt > ncur);	577	while (cnt > ncur);
409		578
410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	579	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
411	if (elem * ncur > 4096)	580	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
412	{	581	{
413	ncur *= elem;	582	ncur *= elem;
414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	583	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
415	ncur = ncur - sizeof (void *) * 4;	584	ncur = ncur - sizeof (void *) * 4;
416	ncur /= elem;	585	ncur /= elem;
417	}	586	}
418		587
419	return ncur;	588	return ncur;
420	}	589	}
421		590
422	inline_speed void *	591	static noinline void *
423	array_realloc (int elem, void *base, int *cur, int cnt)	592	array_realloc (int elem, void *base, int *cur, int cnt)
424	{	593	{
425	*cur = array_nextsize (elem, *cur, cnt);	594	*cur = array_nextsize (elem, *cur, cnt);
426	return ev_realloc (base, elem * *cur);	595	return ev_realloc (base, elem * *cur);
427	}	596	}
…		…
452		621
453	void noinline	622	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	623	ev_feed_event (EV_P_ void *w, int revents)
455	{	624	{
456	W w_ = (W)w;	625	W w_ = (W)w;
		626	int pri = ABSPRI (w_);
457		627
458	if (expect_false (w_->pending))	628	if (expect_false (w_->pending))
		629	pendings [pri][w_->pending - 1].events |= revents;
		630	else
459	{	631	{
		632	w_->pending = ++pendingcnt [pri];
		633	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		634	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	635	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	636	}
463
464	w_->pending = ++pendingcnt [ABSPRI (w_)];
465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
468	}	637	}
469		638
470	void inline_size	639	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	640	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	641	{
473	int i;	642	int i;
474		643
475	for (i = 0; i < eventcnt; ++i)	644	for (i = 0; i < eventcnt; ++i)
…		…
507	}	676	}
508		677
509	void	678	void
510	ev_feed_fd_event (EV_P_ int fd, int revents)	679	ev_feed_fd_event (EV_P_ int fd, int revents)
511	{	680	{
		681	if (fd >= 0 && fd < anfdmax)
512	fd_event (EV_A_ fd, revents);	682	fd_event (EV_A_ fd, revents);
513	}	683	}
514		684
515	void inline_size	685	void inline_size
516	fd_reify (EV_P)	686	fd_reify (EV_P)
517	{	687	{
…		…
521	{	691	{
522	int fd = fdchanges [i];	692	int fd = fdchanges [i];
523	ANFD *anfd = anfds + fd;	693	ANFD *anfd = anfds + fd;
524	ev_io *w;	694	ev_io *w;
525		695
526	int events = 0;	696	unsigned char events = 0;
527		697
528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	698	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
529	events |= w->events;	699	events |= (unsigned char)w->events;
530		700
531	#if EV_SELECT_IS_WINSOCKET	701	#if EV_SELECT_IS_WINSOCKET
532	if (events)	702	if (events)
533	{	703	{
534	unsigned long argp;	704	unsigned long argp;
		705	#ifdef EV_FD_TO_WIN32_HANDLE
		706	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		707	#else
535	anfd->handle = _get_osfhandle (fd);	708	anfd->handle = _get_osfhandle (fd);
		709	#endif
536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	710	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
537	}	711	}
538	#endif	712	#endif
539		713
		714	{
		715	unsigned char o_events = anfd->events;
		716	unsigned char o_reify = anfd->reify;
		717
540	anfd->reify = 0;	718	anfd->reify = 0;
541
542	backend_modify (EV_A_ fd, anfd->events, events);
543	anfd->events = events;	719	anfd->events = events;
		720
		721	if (o_events != events || o_reify & EV_IOFDSET)
		722	backend_modify (EV_A_ fd, o_events, events);
		723	}
544	}	724	}
545		725
546	fdchangecnt = 0;	726	fdchangecnt = 0;
547	}	727	}
548		728
549	void inline_size	729	void inline_size
550	fd_change (EV_P_ int fd)	730	fd_change (EV_P_ int fd, int flags)
551	{	731	{
552	if (expect_false (anfds [fd].reify))	732	unsigned char reify = anfds [fd].reify;
553	return;
554
555	anfds [fd].reify = 1;	733	anfds [fd].reify |= flags;
556		734
		735	if (expect_true (!reify))
		736	{
557	++fdchangecnt;	737	++fdchangecnt;
558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	738	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559	fdchanges [fdchangecnt - 1] = fd;	739	fdchanges [fdchangecnt - 1] = fd;
		740	}
560	}	741	}
561		742
562	void inline_speed	743	void inline_speed
563	fd_kill (EV_P_ int fd)	744	fd_kill (EV_P_ int fd)
564	{	745	{
…		…
615		796
616	for (fd = 0; fd < anfdmax; ++fd)	797	for (fd = 0; fd < anfdmax; ++fd)
617	if (anfds [fd].events)	798	if (anfds [fd].events)
618	{	799	{
619	anfds [fd].events = 0;	800	anfds [fd].events = 0;
620	fd_change (EV_A_ fd);	801	fd_change (EV_A_ fd, EV_IOFDSET | 1);
621	}	802	}
622	}	803	}
623		804
624	/*****************************************************************************/	805	/*****************************************************************************/
625		806
		807	/*
		808	* the heap functions want a real array index. array index 0 uis guaranteed to not
		809	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		810	* the branching factor of the d-tree.
		811	*/
		812
		813	/*
		814	* at the moment we allow libev the luxury of two heaps,
		815	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		816	* which is more cache-efficient.
		817	* the difference is about 5% with 50000+ watchers.
		818	*/
		819	#if EV_USE_4HEAP
		820
		821	#define DHEAP 4
		822	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		823	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		824	#define UPHEAP_DONE(p,k) ((p) == (k))
		825
		826	/* away from the root */
626	void inline_speed	827	void inline_speed
627	upheap (WT *heap, int k)	828	downheap (ANHE *heap, int N, int k)
628	{	829	{
629	WT w = heap [k];	830	ANHE he = heap [k];
		831	ANHE *E = heap + N + HEAP0;
630		832
631	while (k && heap [k >> 1]->at > w->at)	833	for (;;)
632	{
633	heap [k] = heap [k >> 1];
634	((W)heap [k])->active = k + 1;
635	k >>= 1;
636	}	834	{
		835	ev_tstamp minat;
		836	ANHE *minpos;
		837	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
637		838
		839	/* find minimum child */
		840	if (expect_true (pos + DHEAP - 1 < E))
		841	{
		842	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		843	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		844	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		845	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		846	}
		847	else if (pos < E)
		848	{
		849	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		850	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		851	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		852	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		853	}
		854	else
		855	break;
		856
		857	if (ANHE_at (he) <= minat)
		858	break;
		859
		860	heap [k] = *minpos;
		861	ev_active (ANHE_w (*minpos)) = k;
		862
		863	k = minpos - heap;
		864	}
		865
638	heap [k] = w;	866	heap [k] = he;
639	((W)heap [k])->active = k + 1;	867	ev_active (ANHE_w (he)) = k;
640
641	}	868	}
642		869
		870	#else /* 4HEAP */
		871
		872	#define HEAP0 1
		873	#define HPARENT(k) ((k) >> 1)
		874	#define UPHEAP_DONE(p,k) (!(p))
		875
		876	/* away from the root */
643	void inline_speed	877	void inline_speed
644	downheap (WT *heap, int N, int k)	878	downheap (ANHE *heap, int N, int k)
645	{	879	{
646	WT w = heap [k];	880	ANHE he = heap [k];
647		881
648	while (k < (N >> 1))	882	for (;;)
649	{	883	{
650	int j = k << 1;	884	int c = k << 1;
651		885
652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	886	if (c > N + HEAP0 - 1)
653	++j;
654
655	if (w->at <= heap [j]->at)
656	break;	887	break;
657		888
		889	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		890	? 1 : 0;
		891
		892	if (ANHE_at (he) <= ANHE_at (heap [c]))
		893	break;
		894
658	heap [k] = heap [j];	895	heap [k] = heap [c];
659	((W)heap [k])->active = k + 1;	896	ev_active (ANHE_w (heap [k])) = k;
		897
660	k = j;	898	k = c;
661	}	899	}
662		900
663	heap [k] = w;	901	heap [k] = he;
664	((W)heap [k])->active = k + 1;	902	ev_active (ANHE_w (he)) = k;
		903	}
		904	#endif
		905
		906	/* towards the root */
		907	void inline_speed
		908	upheap (ANHE *heap, int k)
		909	{
		910	ANHE he = heap [k];
		911
		912	for (;;)
		913	{
		914	int p = HPARENT (k);
		915
		916	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		917	break;
		918
		919	heap [k] = heap [p];
		920	ev_active (ANHE_w (heap [k])) = k;
		921	k = p;
		922	}
		923
		924	heap [k] = he;
		925	ev_active (ANHE_w (he)) = k;
665	}	926	}
666		927
667	void inline_size	928	void inline_size
668	adjustheap (WT *heap, int N, int k)	929	adjustheap (ANHE *heap, int N, int k)
669	{	930	{
		931	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
670	upheap (heap, k);	932	upheap (heap, k);
		933	else
671	downheap (heap, N, k);	934	downheap (heap, N, k);
		935	}
		936
		937	/* rebuild the heap: this function is used only once and executed rarely */
		938	void inline_size
		939	reheap (ANHE *heap, int N)
		940	{
		941	int i;
		942
		943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		944	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		945	for (i = 0; i < N; ++i)
		946	upheap (heap, i + HEAP0);
672	}	947	}
673		948
674	/*****************************************************************************/	949	/*****************************************************************************/
675		950
676	typedef struct	951	typedef struct
677	{	952	{
678	WL head;	953	WL head;
679	sig_atomic_t volatile gotsig;	954	EV_ATOMIC_T gotsig;
680	} ANSIG;	955	} ANSIG;
681		956
682	static ANSIG *signals;	957	static ANSIG *signals;
683	static int signalmax;	958	static int signalmax;
684		959
685	static int sigpipe [2];	960	static EV_ATOMIC_T gotsig;
686	static sig_atomic_t volatile gotsig;
687	static ev_io sigev;
688		961
689	void inline_size	962	void inline_size
690	signals_init (ANSIG *base, int count)	963	signals_init (ANSIG *base, int count)
691	{	964	{
692	while (count--)	965	while (count--)
…		…
696		969
697	++base;	970	++base;
698	}	971	}
699	}	972	}
700		973
701	static void	974	/*****************************************************************************/
702	sighandler (int signum)
703	{
704	#if _WIN32
705	signal (signum, sighandler);
706	#endif
707		975
708	signals [signum - 1].gotsig = 1;
709
710	if (!gotsig)
711	{
712	int old_errno = errno;
713	gotsig = 1;
714	write (sigpipe [1], &signum, 1);
715	errno = old_errno;
716	}
717	}
718
719	void noinline
720	ev_feed_signal_event (EV_P_ int signum)
721	{
722	WL w;
723
724	#if EV_MULTIPLICITY
725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726	#endif
727
728	--signum;
729
730	if (signum < 0 || signum >= signalmax)
731	return;
732
733	signals [signum].gotsig = 0;
734
735	for (w = signals [signum].head; w; w = w->next)
736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737	}
738
739	static void
740	sigcb (EV_P_ ev_io *iow, int revents)
741	{
742	int signum;
743
744	read (sigpipe [0], &revents, 1);
745	gotsig = 0;
746
747	for (signum = signalmax; signum--; )
748	if (signals [signum].gotsig)
749	ev_feed_signal_event (EV_A_ signum + 1);
750	}
751
752	void inline_size	976	void inline_speed
753	fd_intern (int fd)	977	fd_intern (int fd)
754	{	978	{
755	#ifdef _WIN32	979	#ifdef _WIN32
756	int arg = 1;	980	int arg = 1;
757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	981	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
760	fcntl (fd, F_SETFL, O_NONBLOCK);	984	fcntl (fd, F_SETFL, O_NONBLOCK);
761	#endif	985	#endif
762	}	986	}
763		987
764	static void noinline	988	static void noinline
765	siginit (EV_P)	989	evpipe_init (EV_P)
766	{	990	{
		991	if (!ev_is_active (&pipeev))
		992	{
		993	#if EV_USE_EVENTFD
		994	if ((evfd = eventfd (0, 0)) >= 0)
		995	{
		996	evpipe [0] = -1;
		997	fd_intern (evfd);
		998	ev_io_set (&pipeev, evfd, EV_READ);
		999	}
		1000	else
		1001	#endif
		1002	{
		1003	while (pipe (evpipe))
		1004	syserr ("(libev) error creating signal/async pipe");
		1005
767	fd_intern (sigpipe [0]);	1006	fd_intern (evpipe [0]);
768	fd_intern (sigpipe [1]);	1007	fd_intern (evpipe [1]);
		1008	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1009	}
769		1010
770	ev_io_set (&sigev, sigpipe [0], EV_READ);
771	ev_io_start (EV_A_ &sigev);	1011	ev_io_start (EV_A_ &pipeev);
772	ev_unref (EV_A); /* child watcher should not keep loop alive */	1012	ev_unref (EV_A); /* watcher should not keep loop alive */
		1013	}
		1014	}
		1015
		1016	void inline_size
		1017	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1018	{
		1019	if (!*flag)
		1020	{
		1021	int old_errno = errno; /* save errno because write might clobber it */
		1022
		1023	*flag = 1;
		1024
		1025	#if EV_USE_EVENTFD
		1026	if (evfd >= 0)
		1027	{
		1028	uint64_t counter = 1;
		1029	write (evfd, &counter, sizeof (uint64_t));
		1030	}
		1031	else
		1032	#endif
		1033	write (evpipe [1], &old_errno, 1);
		1034
		1035	errno = old_errno;
		1036	}
		1037	}
		1038
		1039	static void
		1040	pipecb (EV_P_ ev_io *iow, int revents)
		1041	{
		1042	#if EV_USE_EVENTFD
		1043	if (evfd >= 0)
		1044	{
		1045	uint64_t counter;
		1046	read (evfd, &counter, sizeof (uint64_t));
		1047	}
		1048	else
		1049	#endif
		1050	{
		1051	char dummy;
		1052	read (evpipe [0], &dummy, 1);
		1053	}
		1054
		1055	if (gotsig && ev_is_default_loop (EV_A))
		1056	{
		1057	int signum;
		1058	gotsig = 0;
		1059
		1060	for (signum = signalmax; signum--; )
		1061	if (signals [signum].gotsig)
		1062	ev_feed_signal_event (EV_A_ signum + 1);
		1063	}
		1064
		1065	#if EV_ASYNC_ENABLE
		1066	if (gotasync)
		1067	{
		1068	int i;
		1069	gotasync = 0;
		1070
		1071	for (i = asynccnt; i--; )
		1072	if (asyncs [i]->sent)
		1073	{
		1074	asyncs [i]->sent = 0;
		1075	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1076	}
		1077	}
		1078	#endif
773	}	1079	}
774		1080
775	/*****************************************************************************/	1081	/*****************************************************************************/
776		1082
		1083	static void
		1084	ev_sighandler (int signum)
		1085	{
		1086	#if EV_MULTIPLICITY
		1087	struct ev_loop *loop = &default_loop_struct;
		1088	#endif
		1089
		1090	#if _WIN32
		1091	signal (signum, ev_sighandler);
		1092	#endif
		1093
		1094	signals [signum - 1].gotsig = 1;
		1095	evpipe_write (EV_A_ &gotsig);
		1096	}
		1097
		1098	void noinline
		1099	ev_feed_signal_event (EV_P_ int signum)
		1100	{
		1101	WL w;
		1102
		1103	#if EV_MULTIPLICITY
		1104	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1105	#endif
		1106
		1107	--signum;
		1108
		1109	if (signum < 0 || signum >= signalmax)
		1110	return;
		1111
		1112	signals [signum].gotsig = 0;
		1113
		1114	for (w = signals [signum].head; w; w = w->next)
		1115	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1116	}
		1117
		1118	/*****************************************************************************/
		1119
777	static ev_child *childs [EV_PID_HASHSIZE];	1120	static WL childs [EV_PID_HASHSIZE];
778		1121
779	#ifndef _WIN32	1122	#ifndef _WIN32
780		1123
781	static ev_signal childev;	1124	static ev_signal childev;
782		1125
		1126	#ifndef WIFCONTINUED
		1127	# define WIFCONTINUED(status) 0
		1128	#endif
		1129
783	void inline_speed	1130	void inline_speed
784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1131	child_reap (EV_P_ int chain, int pid, int status)
785	{	1132	{
786	ev_child *w;	1133	ev_child *w;
		1134	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
787		1135
788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1136	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1137	{
789	if (w->pid == pid || !w->pid)	1138	if ((w->pid == pid || !w->pid)
		1139	&& (!traced || (w->flags & 1)))
790	{	1140	{
791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1141	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
792	w->rpid = pid;	1142	w->rpid = pid;
793	w->rstatus = status;	1143	w->rstatus = status;
794	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1144	ev_feed_event (EV_A_ (W)w, EV_CHILD);
795	}	1145	}
		1146	}
796	}	1147	}
797		1148
798	#ifndef WCONTINUED	1149	#ifndef WCONTINUED
799	# define WCONTINUED 0	1150	# define WCONTINUED 0
800	#endif	1151	#endif
…		…
809	if (!WCONTINUED	1160	if (!WCONTINUED
810	|| errno != EINVAL	1161	|| errno != EINVAL
811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1162	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
812	return;	1163	return;
813		1164
814	/* make sure we are called again until all childs have been reaped */	1165	/* make sure we are called again until all children have been reaped */
815	/* we need to do it this way so that the callback gets called before we continue */	1166	/* we need to do it this way so that the callback gets called before we continue */
816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1167	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817		1168
818	child_reap (EV_A_ sw, pid, pid, status);	1169	child_reap (EV_A_ pid, pid, status);
819	if (EV_PID_HASHSIZE > 1)	1170	if (EV_PID_HASHSIZE > 1)
820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1171	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
821	}	1172	}
822		1173
823	#endif	1174	#endif
824		1175
825	/*****************************************************************************/	1176	/*****************************************************************************/
…		…
897	}	1248	}
898		1249
899	unsigned int	1250	unsigned int
900	ev_embeddable_backends (void)	1251	ev_embeddable_backends (void)
901	{	1252	{
902	return EVBACKEND_EPOLL	1253	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
903	| EVBACKEND_KQUEUE	1254
904	| EVBACKEND_PORT;	1255	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1256	/* please fix it and tell me how to detect the fix */
		1257	flags &= ~EVBACKEND_EPOLL;
		1258
		1259	return flags;
905	}	1260	}
906		1261
907	unsigned int	1262	unsigned int
908	ev_backend (EV_P)	1263	ev_backend (EV_P)
909	{	1264	{
…		…
912		1267
913	unsigned int	1268	unsigned int
914	ev_loop_count (EV_P)	1269	ev_loop_count (EV_P)
915	{	1270	{
916	return loop_count;	1271	return loop_count;
		1272	}
		1273
		1274	void
		1275	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1276	{
		1277	io_blocktime = interval;
		1278	}
		1279
		1280	void
		1281	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1282	{
		1283	timeout_blocktime = interval;
917	}	1284	}
918		1285
919	static void noinline	1286	static void noinline
920	loop_init (EV_P_ unsigned int flags)	1287	loop_init (EV_P_ unsigned int flags)
921	{	1288	{
…		…
927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1294	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928	have_monotonic = 1;	1295	have_monotonic = 1;
929	}	1296	}
930	#endif	1297	#endif
931		1298
932	ev_rt_now = ev_time ();	1299	ev_rt_now = ev_time ();
933	mn_now = get_clock ();	1300	mn_now = get_clock ();
934	now_floor = mn_now;	1301	now_floor = mn_now;
935	rtmn_diff = ev_rt_now - mn_now;	1302	rtmn_diff = ev_rt_now - mn_now;
		1303
		1304	io_blocktime = 0.;
		1305	timeout_blocktime = 0.;
		1306	backend = 0;
		1307	backend_fd = -1;
		1308	gotasync = 0;
		1309	#if EV_USE_INOTIFY
		1310	fs_fd = -2;
		1311	#endif
936		1312
937	/* pid check not overridable via env */	1313	/* pid check not overridable via env */
938	#ifndef _WIN32	1314	#ifndef _WIN32
939	if (flags & EVFLAG_FORKCHECK)	1315	if (flags & EVFLAG_FORKCHECK)
940	curpid = getpid ();	1316	curpid = getpid ();
…		…
943	if (!(flags & EVFLAG_NOENV)	1319	if (!(flags & EVFLAG_NOENV)
944	&& !enable_secure ()	1320	&& !enable_secure ()
945	&& getenv ("LIBEV_FLAGS"))	1321	&& getenv ("LIBEV_FLAGS"))
946	flags = atoi (getenv ("LIBEV_FLAGS"));	1322	flags = atoi (getenv ("LIBEV_FLAGS"));
947		1323
948	if (!(flags & 0x0000ffffUL))	1324	if (!(flags & 0x0000ffffU))
949	flags |= ev_recommended_backends ();	1325	flags |= ev_recommended_backends ();
950
951	backend = 0;
952	backend_fd = -1;
953	#if EV_USE_INOTIFY
954	fs_fd = -2;
955	#endif
956		1326
957	#if EV_USE_PORT	1327	#if EV_USE_PORT
958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1328	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959	#endif	1329	#endif
960	#if EV_USE_KQUEUE	1330	#if EV_USE_KQUEUE
…		…
968	#endif	1338	#endif
969	#if EV_USE_SELECT	1339	#if EV_USE_SELECT
970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1340	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971	#endif	1341	#endif
972		1342
973	ev_init (&sigev, sigcb);	1343	ev_init (&pipeev, pipecb);
974	ev_set_priority (&sigev, EV_MAXPRI);	1344	ev_set_priority (&pipeev, EV_MAXPRI);
975	}	1345	}
976	}	1346	}
977		1347
978	static void noinline	1348	static void noinline
979	loop_destroy (EV_P)	1349	loop_destroy (EV_P)
980	{	1350	{
981	int i;	1351	int i;
		1352
		1353	if (ev_is_active (&pipeev))
		1354	{
		1355	ev_ref (EV_A); /* signal watcher */
		1356	ev_io_stop (EV_A_ &pipeev);
		1357
		1358	#if EV_USE_EVENTFD
		1359	if (evfd >= 0)
		1360	close (evfd);
		1361	#endif
		1362
		1363	if (evpipe [0] >= 0)
		1364	{
		1365	close (evpipe [0]);
		1366	close (evpipe [1]);
		1367	}
		1368	}
982		1369
983	#if EV_USE_INOTIFY	1370	#if EV_USE_INOTIFY
984	if (fs_fd >= 0)	1371	if (fs_fd >= 0)
985	close (fs_fd);	1372	close (fs_fd);
986	#endif	1373	#endif
…		…
1009	array_free (pending, [i]);	1396	array_free (pending, [i]);
1010	#if EV_IDLE_ENABLE	1397	#if EV_IDLE_ENABLE
1011	array_free (idle, [i]);	1398	array_free (idle, [i]);
1012	#endif	1399	#endif
1013	}	1400	}
		1401
		1402	ev_free (anfds); anfdmax = 0;
1014		1403
1015	/* have to use the microsoft-never-gets-it-right macro */	1404	/* have to use the microsoft-never-gets-it-right macro */
1016	array_free (fdchange, EMPTY);	1405	array_free (fdchange, EMPTY);
1017	array_free (timer, EMPTY);	1406	array_free (timer, EMPTY);
1018	#if EV_PERIODIC_ENABLE	1407	#if EV_PERIODIC_ENABLE
1019	array_free (periodic, EMPTY);	1408	array_free (periodic, EMPTY);
1020	#endif	1409	#endif
		1410	#if EV_FORK_ENABLE
		1411	array_free (fork, EMPTY);
		1412	#endif
1021	array_free (prepare, EMPTY);	1413	array_free (prepare, EMPTY);
1022	array_free (check, EMPTY);	1414	array_free (check, EMPTY);
		1415	#if EV_ASYNC_ENABLE
		1416	array_free (async, EMPTY);
		1417	#endif
1023		1418
1024	backend = 0;	1419	backend = 0;
1025	}	1420	}
1026		1421
		1422	#if EV_USE_INOTIFY
1027	void inline_size infy_fork (EV_P);	1423	void inline_size infy_fork (EV_P);
		1424	#endif
1028		1425
1029	void inline_size	1426	void inline_size
1030	loop_fork (EV_P)	1427	loop_fork (EV_P)
1031	{	1428	{
1032	#if EV_USE_PORT	1429	#if EV_USE_PORT
…		…
1040	#endif	1437	#endif
1041	#if EV_USE_INOTIFY	1438	#if EV_USE_INOTIFY
1042	infy_fork (EV_A);	1439	infy_fork (EV_A);
1043	#endif	1440	#endif
1044		1441
1045	if (ev_is_active (&sigev))	1442	if (ev_is_active (&pipeev))
1046	{	1443	{
1047	/* default loop */	1444	/* this "locks" the handlers against writing to the pipe */
		1445	/* while we modify the fd vars */
		1446	gotsig = 1;
		1447	#if EV_ASYNC_ENABLE
		1448	gotasync = 1;
		1449	#endif
1048		1450
1049	ev_ref (EV_A);	1451	ev_ref (EV_A);
1050	ev_io_stop (EV_A_ &sigev);	1452	ev_io_stop (EV_A_ &pipeev);
		1453
		1454	#if EV_USE_EVENTFD
		1455	if (evfd >= 0)
		1456	close (evfd);
		1457	#endif
		1458
		1459	if (evpipe [0] >= 0)
		1460	{
1051	close (sigpipe [0]);	1461	close (evpipe [0]);
1052	close (sigpipe [1]);	1462	close (evpipe [1]);
		1463	}
1053		1464
1054	while (pipe (sigpipe))
1055	syserr ("(libev) error creating pipe");
1056
1057	siginit (EV_A);	1465	evpipe_init (EV_A);
		1466	/* now iterate over everything, in case we missed something */
		1467	pipecb (EV_A_ &pipeev, EV_READ);
1058	}	1468	}
1059		1469
1060	postfork = 0;	1470	postfork = 0;
1061	}	1471	}
1062		1472
1063	#if EV_MULTIPLICITY	1473	#if EV_MULTIPLICITY
		1474
1064	struct ev_loop *	1475	struct ev_loop *
1065	ev_loop_new (unsigned int flags)	1476	ev_loop_new (unsigned int flags)
1066	{	1477	{
1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1478	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1068		1479
…		…
1084	}	1495	}
1085		1496
1086	void	1497	void
1087	ev_loop_fork (EV_P)	1498	ev_loop_fork (EV_P)
1088	{	1499	{
1089	postfork = 1;	1500	postfork = 1; /* must be in line with ev_default_fork */
1090	}	1501	}
1091		1502
		1503	#if EV_VERIFY
		1504	void noinline
		1505	verify_watcher (EV_P_ W w)
		1506	{
		1507	assert (("watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1508
		1509	if (w->pending)
		1510	assert (("pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1511	}
		1512
		1513	static void noinline
		1514	verify_heap (EV_P_ ANHE *heap, int N)
		1515	{
		1516	int i;
		1517
		1518	for (i = HEAP0; i < N + HEAP0; ++i)
		1519	{
		1520	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1521	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1522	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1523
		1524	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1525	}
		1526	}
		1527
		1528	static void noinline
		1529	array_verify (EV_P_ W *ws, int cnt)
		1530	{
		1531	while (cnt--)
		1532	{
		1533	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1534	verify_watcher (EV_A_ ws [cnt]);
		1535	}
		1536	}
		1537	#endif
		1538
		1539	void
		1540	ev_loop_verify (EV_P)
		1541	{
		1542	#if EV_VERIFY
		1543	int i;
		1544	WL w;
		1545
		1546	assert (activecnt >= -1);
		1547
		1548	assert (fdchangemax >= fdchangecnt);
		1549	for (i = 0; i < fdchangecnt; ++i)
		1550	assert (("negative fd in fdchanges", fdchanges [i] >= 0));
		1551
		1552	assert (anfdmax >= 0);
		1553	for (i = 0; i < anfdmax; ++i)
		1554	for (w = anfds [i].head; w; w = w->next)
		1555	{
		1556	verify_watcher (EV_A_ (W)w);
		1557	assert (("inactive fd watcher on anfd list", ev_active (w) == 1));
		1558	assert (("fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1559	}
		1560
		1561	assert (timermax >= timercnt);
		1562	verify_heap (EV_A_ timers, timercnt);
		1563
		1564	#if EV_PERIODIC_ENABLE
		1565	assert (periodicmax >= periodiccnt);
		1566	verify_heap (EV_A_ periodics, periodiccnt);
		1567	#endif
		1568
		1569	for (i = NUMPRI; i--; )
		1570	{
		1571	assert (pendingmax [i] >= pendingcnt [i]);
		1572	#if EV_IDLE_ENABLE
		1573	assert (idleall >= 0);
		1574	assert (idlemax [i] >= idlecnt [i]);
		1575	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1576	#endif
		1577	}
		1578
		1579	#if EV_FORK_ENABLE
		1580	assert (forkmax >= forkcnt);
		1581	array_verify (EV_A_ (W *)forks, forkcnt);
		1582	#endif
		1583
		1584	#if EV_ASYNC_ENABLE
		1585	assert (asyncmax >= asynccnt);
		1586	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1587	#endif
		1588
		1589	assert (preparemax >= preparecnt);
		1590	array_verify (EV_A_ (W *)prepares, preparecnt);
		1591
		1592	assert (checkmax >= checkcnt);
		1593	array_verify (EV_A_ (W *)checks, checkcnt);
		1594
		1595	# if 0
		1596	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1597	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
1092	#endif	1598	# endif
		1599	#endif
		1600	}
		1601
		1602	#endif /* multiplicity */
1093		1603
1094	#if EV_MULTIPLICITY	1604	#if EV_MULTIPLICITY
1095	struct ev_loop *	1605	struct ev_loop *
1096	ev_default_loop_init (unsigned int flags)	1606	ev_default_loop_init (unsigned int flags)
1097	#else	1607	#else
1098	int	1608	int
1099	ev_default_loop (unsigned int flags)	1609	ev_default_loop (unsigned int flags)
1100	#endif	1610	#endif
1101	{	1611	{
1102	if (sigpipe [0] == sigpipe [1])
1103	if (pipe (sigpipe))
1104	return 0;
1105
1106	if (!ev_default_loop_ptr)	1612	if (!ev_default_loop_ptr)
1107	{	1613	{
1108	#if EV_MULTIPLICITY	1614	#if EV_MULTIPLICITY
1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1615	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1110	#else	1616	#else
…		…
1113		1619
1114	loop_init (EV_A_ flags);	1620	loop_init (EV_A_ flags);
1115		1621
1116	if (ev_backend (EV_A))	1622	if (ev_backend (EV_A))
1117	{	1623	{
1118	siginit (EV_A);
1119
1120	#ifndef _WIN32	1624	#ifndef _WIN32
1121	ev_signal_init (&childev, childcb, SIGCHLD);	1625	ev_signal_init (&childev, childcb, SIGCHLD);
1122	ev_set_priority (&childev, EV_MAXPRI);	1626	ev_set_priority (&childev, EV_MAXPRI);
1123	ev_signal_start (EV_A_ &childev);	1627	ev_signal_start (EV_A_ &childev);
1124	ev_unref (EV_A); /* child watcher should not keep loop alive */	1628	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1141	#ifndef _WIN32	1645	#ifndef _WIN32
1142	ev_ref (EV_A); /* child watcher */	1646	ev_ref (EV_A); /* child watcher */
1143	ev_signal_stop (EV_A_ &childev);	1647	ev_signal_stop (EV_A_ &childev);
1144	#endif	1648	#endif
1145		1649
1146	ev_ref (EV_A); /* signal watcher */
1147	ev_io_stop (EV_A_ &sigev);
1148
1149	close (sigpipe [0]); sigpipe [0] = 0;
1150	close (sigpipe [1]); sigpipe [1] = 0;
1151
1152	loop_destroy (EV_A);	1650	loop_destroy (EV_A);
1153	}	1651	}
1154		1652
1155	void	1653	void
1156	ev_default_fork (void)	1654	ev_default_fork (void)
…		…
1158	#if EV_MULTIPLICITY	1656	#if EV_MULTIPLICITY
1159	struct ev_loop *loop = ev_default_loop_ptr;	1657	struct ev_loop *loop = ev_default_loop_ptr;
1160	#endif	1658	#endif
1161		1659
1162	if (backend)	1660	if (backend)
1163	postfork = 1;	1661	postfork = 1; /* must be in line with ev_loop_fork */
1164	}	1662	}
1165		1663
1166	/*****************************************************************************/	1664	/*****************************************************************************/
		1665
		1666	void
		1667	ev_invoke (EV_P_ void *w, int revents)
		1668	{
		1669	EV_CB_INVOKE ((W)w, revents);
		1670	}
1167		1671
1168	void inline_speed	1672	void inline_speed
1169	call_pending (EV_P)	1673	call_pending (EV_P)
1170	{	1674	{
1171	int pri;	1675	int pri;
…		…
1179	{	1683	{
1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1684	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1181		1685
1182	p->w->pending = 0;	1686	p->w->pending = 0;
1183	EV_CB_INVOKE (p->w, p->events);	1687	EV_CB_INVOKE (p->w, p->events);
		1688	EV_FREQUENT_CHECK;
1184	}	1689	}
1185	}	1690	}
1186	}	1691	}
1187
1188	void inline_size
1189	timers_reify (EV_P)
1190	{
1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
1192	{
1193	ev_timer *w = timers [0];
1194
1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1196
1197	/* first reschedule or stop timer */
1198	if (w->repeat)
1199	{
1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1201
1202	((WT)w)->at += w->repeat;
1203	if (((WT)w)->at < mn_now)
1204	((WT)w)->at = mn_now;
1205
1206	downheap ((WT *)timers, timercnt, 0);
1207	}
1208	else
1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1210
1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1212	}
1213	}
1214
1215	#if EV_PERIODIC_ENABLE
1216	void inline_size
1217	periodics_reify (EV_P)
1218	{
1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1220	{
1221	ev_periodic *w = periodics [0];
1222
1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1224
1225	/* first reschedule or stop timer */
1226	if (w->reschedule_cb)
1227	{
1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1230	downheap ((WT *)periodics, periodiccnt, 0);
1231	}
1232	else if (w->interval)
1233	{
1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1236	downheap ((WT *)periodics, periodiccnt, 0);
1237	}
1238	else
1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1240
1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1242	}
1243	}
1244
1245	static void noinline
1246	periodics_reschedule (EV_P)
1247	{
1248	int i;
1249
1250	/* adjust periodics after time jump */
1251	for (i = 0; i < periodiccnt; ++i)
1252	{
1253	ev_periodic *w = periodics [i];
1254
1255	if (w->reschedule_cb)
1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1257	else if (w->interval)
1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
1259	}
1260
1261	/* now rebuild the heap */
1262	for (i = periodiccnt >> 1; i--; )
1263	downheap ((WT *)periodics, periodiccnt, i);
1264	}
1265	#endif
1266		1692
1267	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1268	void inline_size	1694	void inline_size
1269	idle_reify (EV_P)	1695	idle_reify (EV_P)
1270	{	1696	{
…		…
1285	}	1711	}
1286	}	1712	}
1287	}	1713	}
1288	#endif	1714	#endif
1289		1715
1290	int inline_size	1716	void inline_size
1291	time_update_monotonic (EV_P)	1717	timers_reify (EV_P)
1292	{	1718	{
		1719	EV_FREQUENT_CHECK;
		1720
		1721	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1722	{
		1723	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1724
		1725	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
		1726
		1727	/* first reschedule or stop timer */
		1728	if (w->repeat)
		1729	{
		1730	ev_at (w) += w->repeat;
		1731	if (ev_at (w) < mn_now)
		1732	ev_at (w) = mn_now;
		1733
		1734	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1735
		1736	ANHE_at_cache (timers [HEAP0]);
		1737	downheap (timers, timercnt, HEAP0);
		1738	}
		1739	else
		1740	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1741
		1742	EV_FREQUENT_CHECK;
		1743	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1744	}
		1745	}
		1746
		1747	#if EV_PERIODIC_ENABLE
		1748	void inline_size
		1749	periodics_reify (EV_P)
		1750	{
		1751	EV_FREQUENT_CHECK;
		1752
		1753	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1754	{
		1755	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1756
		1757	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
		1758
		1759	/* first reschedule or stop timer */
		1760	if (w->reschedule_cb)
		1761	{
		1762	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1763
		1764	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1765
		1766	ANHE_at_cache (periodics [HEAP0]);
		1767	downheap (periodics, periodiccnt, HEAP0);
		1768	}
		1769	else if (w->interval)
		1770	{
		1771	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1772	/* if next trigger time is not sufficiently in the future, put it there */
		1773	/* this might happen because of floating point inexactness */
		1774	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1775	{
		1776	ev_at (w) += w->interval;
		1777
		1778	/* if interval is unreasonably low we might still have a time in the past */
		1779	/* so correct this. this will make the periodic very inexact, but the user */
		1780	/* has effectively asked to get triggered more often than possible */
		1781	if (ev_at (w) < ev_rt_now)
		1782	ev_at (w) = ev_rt_now;
		1783	}
		1784
		1785	ANHE_at_cache (periodics [HEAP0]);
		1786	downheap (periodics, periodiccnt, HEAP0);
		1787	}
		1788	else
		1789	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1790
		1791	EV_FREQUENT_CHECK;
		1792	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1793	}
		1794	}
		1795
		1796	static void noinline
		1797	periodics_reschedule (EV_P)
		1798	{
		1799	int i;
		1800
		1801	/* adjust periodics after time jump */
		1802	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1803	{
		1804	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1805
		1806	if (w->reschedule_cb)
		1807	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1808	else if (w->interval)
		1809	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1810
		1811	ANHE_at_cache (periodics [i]);
		1812	}
		1813
		1814	reheap (periodics, periodiccnt);
		1815	}
		1816	#endif
		1817
		1818	void inline_speed
		1819	time_update (EV_P_ ev_tstamp max_block)
		1820	{
		1821	int i;
		1822
		1823	#if EV_USE_MONOTONIC
		1824	if (expect_true (have_monotonic))
		1825	{
		1826	ev_tstamp odiff = rtmn_diff;
		1827
1293	mn_now = get_clock ();	1828	mn_now = get_clock ();
1294		1829
		1830	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1831	/* interpolate in the meantime */
1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1832	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1296	{	1833	{
1297	ev_rt_now = rtmn_diff + mn_now;	1834	ev_rt_now = rtmn_diff + mn_now;
1298	return 0;	1835	return;
1299	}	1836	}
1300	else	1837
1301	{
1302	now_floor = mn_now;	1838	now_floor = mn_now;
1303	ev_rt_now = ev_time ();	1839	ev_rt_now = ev_time ();
1304	return 1;
1305	}
1306	}
1307		1840
1308	void inline_size	1841	/* loop a few times, before making important decisions.
1309	time_update (EV_P)	1842	* on the choice of "4": one iteration isn't enough,
1310	{	1843	* in case we get preempted during the calls to
1311	int i;	1844	* ev_time and get_clock. a second call is almost guaranteed
1312		1845	* to succeed in that case, though. and looping a few more times
1313	#if EV_USE_MONOTONIC	1846	* doesn't hurt either as we only do this on time-jumps or
1314	if (expect_true (have_monotonic))	1847	* in the unlikely event of having been preempted here.
1315	{	1848	*/
1316	if (time_update_monotonic (EV_A))	1849	for (i = 4; --i; )
1317	{	1850	{
1318	ev_tstamp odiff = rtmn_diff;
1319
1320	/* loop a few times, before making important decisions.
1321	* on the choice of "4": one iteration isn't enough,
1322	* in case we get preempted during the calls to
1323	* ev_time and get_clock. a second call is almost guaranteed
1324	* to succeed in that case, though. and looping a few more times
1325	* doesn't hurt either as we only do this on time-jumps or
1326	* in the unlikely event of having been preempted here.
1327	*/
1328	for (i = 4; --i; )
1329	{
1330	rtmn_diff = ev_rt_now - mn_now;	1851	rtmn_diff = ev_rt_now - mn_now;
1331		1852
1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1853	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1333	return; /* all is well */	1854	return; /* all is well */
1334		1855
1335	ev_rt_now = ev_time ();	1856	ev_rt_now = ev_time ();
1336	mn_now = get_clock ();	1857	mn_now = get_clock ();
1337	now_floor = mn_now;	1858	now_floor = mn_now;
1338	}	1859	}
1339		1860
1340	# if EV_PERIODIC_ENABLE	1861	# if EV_PERIODIC_ENABLE
1341	periodics_reschedule (EV_A);	1862	periodics_reschedule (EV_A);
1342	# endif	1863	# endif
1343	/* no timer adjustment, as the monotonic clock doesn't jump */	1864	/* no timer adjustment, as the monotonic clock doesn't jump */
1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1865	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1345	}
1346	}	1866	}
1347	else	1867	else
1348	#endif	1868	#endif
1349	{	1869	{
1350	ev_rt_now = ev_time ();	1870	ev_rt_now = ev_time ();
1351		1871
1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1872	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1353	{	1873	{
1354	#if EV_PERIODIC_ENABLE	1874	#if EV_PERIODIC_ENABLE
1355	periodics_reschedule (EV_A);	1875	periodics_reschedule (EV_A);
1356	#endif	1876	#endif
1357
1358	/* adjust timers. this is easy, as the offset is the same for all of them */	1877	/* adjust timers. this is easy, as the offset is the same for all of them */
1359	for (i = 0; i < timercnt; ++i)	1878	for (i = 0; i < timercnt; ++i)
		1879	{
		1880	ANHE *he = timers + i + HEAP0;
1360	((WT)timers [i])->at += ev_rt_now - mn_now;	1881	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1882	ANHE_at_cache (*he);
		1883	}
1361	}	1884	}
1362		1885
1363	mn_now = ev_rt_now;	1886	mn_now = ev_rt_now;
1364	}	1887	}
1365	}	1888	}
…		…
1379	static int loop_done;	1902	static int loop_done;
1380		1903
1381	void	1904	void
1382	ev_loop (EV_P_ int flags)	1905	ev_loop (EV_P_ int flags)
1383	{	1906	{
1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1907	loop_done = EVUNLOOP_CANCEL;
1385	? EVUNLOOP_ONE
1386	: EVUNLOOP_CANCEL;
1387		1908
1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1909	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1389		1910
1390	do	1911	do
1391	{	1912	{
		1913	#if EV_VERIFY >= 2
		1914	ev_loop_verify (EV_A);
		1915	#endif
		1916
1392	#ifndef _WIN32	1917	#ifndef _WIN32
1393	if (expect_false (curpid)) /* penalise the forking check even more */	1918	if (expect_false (curpid)) /* penalise the forking check even more */
1394	if (expect_false (getpid () != curpid))	1919	if (expect_false (getpid () != curpid))
1395	{	1920	{
1396	curpid = getpid ();	1921	curpid = getpid ();
…		…
1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1931	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1407	call_pending (EV_A);	1932	call_pending (EV_A);
1408	}	1933	}
1409	#endif	1934	#endif
1410		1935
1411	/* queue check watchers (and execute them) */	1936	/* queue prepare watchers (and execute them) */
1412	if (expect_false (preparecnt))	1937	if (expect_false (preparecnt))
1413	{	1938	{
1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1939	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1415	call_pending (EV_A);	1940	call_pending (EV_A);
1416	}	1941	}
…		…
1425	/* update fd-related kernel structures */	1950	/* update fd-related kernel structures */
1426	fd_reify (EV_A);	1951	fd_reify (EV_A);
1427		1952
1428	/* calculate blocking time */	1953	/* calculate blocking time */
1429	{	1954	{
1430	ev_tstamp block;	1955	ev_tstamp waittime = 0.;
		1956	ev_tstamp sleeptime = 0.;
1431		1957
1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1958	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1433	block = 0.; /* do not block at all */
1434	else
1435	{	1959	{
1436	/* update time to cancel out callback processing overhead */	1960	/* update time to cancel out callback processing overhead */
1437	#if EV_USE_MONOTONIC
1438	if (expect_true (have_monotonic))
1439	time_update_monotonic (EV_A);	1961	time_update (EV_A_ 1e100);
1440	else
1441	#endif
1442	{
1443	ev_rt_now = ev_time ();
1444	mn_now = ev_rt_now;
1445	}
1446		1962
1447	block = MAX_BLOCKTIME;	1963	waittime = MAX_BLOCKTIME;
1448		1964
1449	if (timercnt)	1965	if (timercnt)
1450	{	1966	{
1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1967	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1452	if (block > to) block = to;	1968	if (waittime > to) waittime = to;
1453	}	1969	}
1454		1970
1455	#if EV_PERIODIC_ENABLE	1971	#if EV_PERIODIC_ENABLE
1456	if (periodiccnt)	1972	if (periodiccnt)
1457	{	1973	{
1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1974	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1459	if (block > to) block = to;	1975	if (waittime > to) waittime = to;
1460	}	1976	}
1461	#endif	1977	#endif
1462		1978
1463	if (expect_false (block < 0.)) block = 0.;	1979	if (expect_false (waittime < timeout_blocktime))
		1980	waittime = timeout_blocktime;
		1981
		1982	sleeptime = waittime - backend_fudge;
		1983
		1984	if (expect_true (sleeptime > io_blocktime))
		1985	sleeptime = io_blocktime;
		1986
		1987	if (sleeptime)
		1988	{
		1989	ev_sleep (sleeptime);
		1990	waittime -= sleeptime;
		1991	}
1464	}	1992	}
1465		1993
1466	++loop_count;	1994	++loop_count;
1467	backend_poll (EV_A_ block);	1995	backend_poll (EV_A_ waittime);
		1996
		1997	/* update ev_rt_now, do magic */
		1998	time_update (EV_A_ waittime + sleeptime);
1468	}	1999	}
1469
1470	/* update ev_rt_now, do magic */
1471	time_update (EV_A);
1472		2000
1473	/* queue pending timers and reschedule them */	2001	/* queue pending timers and reschedule them */
1474	timers_reify (EV_A); /* relative timers called last */	2002	timers_reify (EV_A); /* relative timers called last */
1475	#if EV_PERIODIC_ENABLE	2003	#if EV_PERIODIC_ENABLE
1476	periodics_reify (EV_A); /* absolute timers called first */	2004	periodics_reify (EV_A); /* absolute timers called first */
…		…
1484	/* queue check watchers, to be executed first */	2012	/* queue check watchers, to be executed first */
1485	if (expect_false (checkcnt))	2013	if (expect_false (checkcnt))
1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2014	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1487		2015
1488	call_pending (EV_A);	2016	call_pending (EV_A);
1489
1490	}	2017	}
1491	while (expect_true (activecnt && !loop_done));	2018	while (expect_true (
		2019	activecnt
		2020	&& !loop_done
		2021	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2022	));
1492		2023
1493	if (loop_done == EVUNLOOP_ONE)	2024	if (loop_done == EVUNLOOP_ONE)
1494	loop_done = EVUNLOOP_CANCEL;	2025	loop_done = EVUNLOOP_CANCEL;
1495	}	2026	}
1496		2027
…		…
1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2063	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1533	w->pending = 0;	2064	w->pending = 0;
1534	}	2065	}
1535	}	2066	}
1536		2067
1537	void	2068	int
1538	ev_clear_pending (EV_P_ void *w, int invoke)	2069	ev_clear_pending (EV_P_ void *w)
1539	{	2070	{
1540	W w_ = (W)w;	2071	W w_ = (W)w;
1541	int pending = w_->pending;	2072	int pending = w_->pending;
1542		2073
1543	if (pending)	2074	if (expect_true (pending))
1544	{	2075	{
1545	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2076	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1546
1547	w_->pending = 0;	2077	w_->pending = 0;
1548	p->w = 0;	2078	p->w = 0;
1549		2079	return p->events;
1550	if (invoke)
1551	EV_CB_INVOKE (w_, p->events);
1552	}	2080	}
		2081	else
		2082	return 0;
1553	}	2083	}
1554		2084
1555	void inline_size	2085	void inline_size
1556	pri_adjust (EV_P_ W w)	2086	pri_adjust (EV_P_ W w)
1557	{	2087	{
…		…
1576	w->active = 0;	2106	w->active = 0;
1577	}	2107	}
1578		2108
1579	/*****************************************************************************/	2109	/*****************************************************************************/
1580		2110
1581	void	2111	void noinline
1582	ev_io_start (EV_P_ ev_io *w)	2112	ev_io_start (EV_P_ ev_io *w)
1583	{	2113	{
1584	int fd = w->fd;	2114	int fd = w->fd;
1585		2115
1586	if (expect_false (ev_is_active (w)))	2116	if (expect_false (ev_is_active (w)))
1587	return;	2117	return;
1588		2118
1589	assert (("ev_io_start called with negative fd", fd >= 0));	2119	assert (("ev_io_start called with negative fd", fd >= 0));
1590		2120
		2121	EV_FREQUENT_CHECK;
		2122
1591	ev_start (EV_A_ (W)w, 1);	2123	ev_start (EV_A_ (W)w, 1);
1592	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2124	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1593	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2125	wlist_add (&anfds[fd].head, (WL)w);
1594		2126
1595	fd_change (EV_A_ fd);	2127	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
1596	}	2128	w->events &= ~EV_IOFDSET;
1597		2129
1598	void	2130	EV_FREQUENT_CHECK;
		2131	}
		2132
		2133	void noinline
1599	ev_io_stop (EV_P_ ev_io *w)	2134	ev_io_stop (EV_P_ ev_io *w)
1600	{	2135	{
1601	clear_pending (EV_A_ (W)w);	2136	clear_pending (EV_A_ (W)w);
1602	if (expect_false (!ev_is_active (w)))	2137	if (expect_false (!ev_is_active (w)))
1603	return;	2138	return;
1604		2139
1605	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2140	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1606		2141
		2142	EV_FREQUENT_CHECK;
		2143
1607	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2144	wlist_del (&anfds[w->fd].head, (WL)w);
1608	ev_stop (EV_A_ (W)w);	2145	ev_stop (EV_A_ (W)w);
1609		2146
1610	fd_change (EV_A_ w->fd);	2147	fd_change (EV_A_ w->fd, 1);
1611	}
1612		2148
1613	void	2149	EV_FREQUENT_CHECK;
		2150	}
		2151
		2152	void noinline
1614	ev_timer_start (EV_P_ ev_timer *w)	2153	ev_timer_start (EV_P_ ev_timer *w)
1615	{	2154	{
1616	if (expect_false (ev_is_active (w)))	2155	if (expect_false (ev_is_active (w)))
1617	return;	2156	return;
1618		2157
1619	((WT)w)->at += mn_now;	2158	ev_at (w) += mn_now;
1620		2159
1621	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1622		2161
		2162	EV_FREQUENT_CHECK;
		2163
		2164	++timercnt;
1623	ev_start (EV_A_ (W)w, ++timercnt);	2165	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1624	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2166	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1625	timers [timercnt - 1] = w;	2167	ANHE_w (timers [ev_active (w)]) = (WT)w;
1626	upheap ((WT *)timers, timercnt - 1);	2168	ANHE_at_cache (timers [ev_active (w)]);
		2169	upheap (timers, ev_active (w));
1627		2170
		2171	EV_FREQUENT_CHECK;
		2172
1628	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2173	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1629	}	2174	}
1630		2175
1631	void	2176	void noinline
1632	ev_timer_stop (EV_P_ ev_timer *w)	2177	ev_timer_stop (EV_P_ ev_timer *w)
1633	{	2178	{
1634	clear_pending (EV_A_ (W)w);	2179	clear_pending (EV_A_ (W)w);
1635	if (expect_false (!ev_is_active (w)))	2180	if (expect_false (!ev_is_active (w)))
1636	return;	2181	return;
1637		2182
1638	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2183	EV_FREQUENT_CHECK;
1639		2184
1640	{	2185	{
1641	int active = ((W)w)->active;	2186	int active = ev_active (w);
1642		2187
		2188	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2189
		2190	--timercnt;
		2191
1643	if (expect_true (--active < --timercnt))	2192	if (expect_true (active < timercnt + HEAP0))
1644	{	2193	{
1645	timers [active] = timers [timercnt];	2194	timers [active] = timers [timercnt + HEAP0];
1646	adjustheap ((WT *)timers, timercnt, active);	2195	adjustheap (timers, timercnt, active);
1647	}	2196	}
1648	}	2197	}
1649		2198
1650	((WT)w)->at -= mn_now;	2199	EV_FREQUENT_CHECK;
		2200
		2201	ev_at (w) -= mn_now;
1651		2202
1652	ev_stop (EV_A_ (W)w);	2203	ev_stop (EV_A_ (W)w);
1653	}	2204	}
1654		2205
1655	void	2206	void noinline
1656	ev_timer_again (EV_P_ ev_timer *w)	2207	ev_timer_again (EV_P_ ev_timer *w)
1657	{	2208	{
		2209	EV_FREQUENT_CHECK;
		2210
1658	if (ev_is_active (w))	2211	if (ev_is_active (w))
1659	{	2212	{
1660	if (w->repeat)	2213	if (w->repeat)
1661	{	2214	{
1662	((WT)w)->at = mn_now + w->repeat;	2215	ev_at (w) = mn_now + w->repeat;
		2216	ANHE_at_cache (timers [ev_active (w)]);
1663	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2217	adjustheap (timers, timercnt, ev_active (w));
1664	}	2218	}
1665	else	2219	else
1666	ev_timer_stop (EV_A_ w);	2220	ev_timer_stop (EV_A_ w);
1667	}	2221	}
1668	else if (w->repeat)	2222	else if (w->repeat)
1669	{	2223	{
1670	w->at = w->repeat;	2224	ev_at (w) = w->repeat;
1671	ev_timer_start (EV_A_ w);	2225	ev_timer_start (EV_A_ w);
1672	}	2226	}
		2227
		2228	EV_FREQUENT_CHECK;
1673	}	2229	}
1674		2230
1675	#if EV_PERIODIC_ENABLE	2231	#if EV_PERIODIC_ENABLE
1676	void	2232	void noinline
1677	ev_periodic_start (EV_P_ ev_periodic *w)	2233	ev_periodic_start (EV_P_ ev_periodic *w)
1678	{	2234	{
1679	if (expect_false (ev_is_active (w)))	2235	if (expect_false (ev_is_active (w)))
1680	return;	2236	return;
1681		2237
1682	if (w->reschedule_cb)	2238	if (w->reschedule_cb)
1683	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2239	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1684	else if (w->interval)	2240	else if (w->interval)
1685	{	2241	{
1686	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2242	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1687	/* this formula differs from the one in periodic_reify because we do not always round up */	2243	/* this formula differs from the one in periodic_reify because we do not always round up */
1688	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	2244	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1689	}	2245	}
		2246	else
		2247	ev_at (w) = w->offset;
1690		2248
		2249	EV_FREQUENT_CHECK;
		2250
		2251	++periodiccnt;
1691	ev_start (EV_A_ (W)w, ++periodiccnt);	2252	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1692	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2253	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1693	periodics [periodiccnt - 1] = w;	2254	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1694	upheap ((WT *)periodics, periodiccnt - 1);	2255	ANHE_at_cache (periodics [ev_active (w)]);
		2256	upheap (periodics, ev_active (w));
1695		2257
		2258	EV_FREQUENT_CHECK;
		2259
1696	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2260	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1697	}	2261	}
1698		2262
1699	void	2263	void noinline
1700	ev_periodic_stop (EV_P_ ev_periodic *w)	2264	ev_periodic_stop (EV_P_ ev_periodic *w)
1701	{	2265	{
1702	clear_pending (EV_A_ (W)w);	2266	clear_pending (EV_A_ (W)w);
1703	if (expect_false (!ev_is_active (w)))	2267	if (expect_false (!ev_is_active (w)))
1704	return;	2268	return;
1705		2269
1706	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2270	EV_FREQUENT_CHECK;
1707		2271
1708	{	2272	{
1709	int active = ((W)w)->active;	2273	int active = ev_active (w);
1710		2274
		2275	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2276
		2277	--periodiccnt;
		2278
1711	if (expect_true (--active < --periodiccnt))	2279	if (expect_true (active < periodiccnt + HEAP0))
1712	{	2280	{
1713	periodics [active] = periodics [periodiccnt];	2281	periodics [active] = periodics [periodiccnt + HEAP0];
1714	adjustheap ((WT *)periodics, periodiccnt, active);	2282	adjustheap (periodics, periodiccnt, active);
1715	}	2283	}
1716	}	2284	}
1717		2285
		2286	EV_FREQUENT_CHECK;
		2287
1718	ev_stop (EV_A_ (W)w);	2288	ev_stop (EV_A_ (W)w);
1719	}	2289	}
1720		2290
1721	void	2291	void noinline
1722	ev_periodic_again (EV_P_ ev_periodic *w)	2292	ev_periodic_again (EV_P_ ev_periodic *w)
1723	{	2293	{
1724	/* TODO: use adjustheap and recalculation */	2294	/* TODO: use adjustheap and recalculation */
1725	ev_periodic_stop (EV_A_ w);	2295	ev_periodic_stop (EV_A_ w);
1726	ev_periodic_start (EV_A_ w);	2296	ev_periodic_start (EV_A_ w);
…		…
1729		2299
1730	#ifndef SA_RESTART	2300	#ifndef SA_RESTART
1731	# define SA_RESTART 0	2301	# define SA_RESTART 0
1732	#endif	2302	#endif
1733		2303
1734	void	2304	void noinline
1735	ev_signal_start (EV_P_ ev_signal *w)	2305	ev_signal_start (EV_P_ ev_signal *w)
1736	{	2306	{
1737	#if EV_MULTIPLICITY	2307	#if EV_MULTIPLICITY
1738	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2308	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1739	#endif	2309	#endif
1740	if (expect_false (ev_is_active (w)))	2310	if (expect_false (ev_is_active (w)))
1741	return;	2311	return;
1742		2312
1743	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2313	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1744		2314
		2315	evpipe_init (EV_A);
		2316
		2317	EV_FREQUENT_CHECK;
		2318
		2319	{
		2320	#ifndef _WIN32
		2321	sigset_t full, prev;
		2322	sigfillset (&full);
		2323	sigprocmask (SIG_SETMASK, &full, &prev);
		2324	#endif
		2325
		2326	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2327
		2328	#ifndef _WIN32
		2329	sigprocmask (SIG_SETMASK, &prev, 0);
		2330	#endif
		2331	}
		2332
1745	ev_start (EV_A_ (W)w, 1);	2333	ev_start (EV_A_ (W)w, 1);
1746	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1747	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2334	wlist_add (&signals [w->signum - 1].head, (WL)w);
1748		2335
1749	if (!((WL)w)->next)	2336	if (!((WL)w)->next)
1750	{	2337	{
1751	#if _WIN32	2338	#if _WIN32
1752	signal (w->signum, sighandler);	2339	signal (w->signum, ev_sighandler);
1753	#else	2340	#else
1754	struct sigaction sa;	2341	struct sigaction sa;
1755	sa.sa_handler = sighandler;	2342	sa.sa_handler = ev_sighandler;
1756	sigfillset (&sa.sa_mask);	2343	sigfillset (&sa.sa_mask);
1757	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2344	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1758	sigaction (w->signum, &sa, 0);	2345	sigaction (w->signum, &sa, 0);
1759	#endif	2346	#endif
1760	}	2347	}
1761	}
1762		2348
1763	void	2349	EV_FREQUENT_CHECK;
		2350	}
		2351
		2352	void noinline
1764	ev_signal_stop (EV_P_ ev_signal *w)	2353	ev_signal_stop (EV_P_ ev_signal *w)
1765	{	2354	{
1766	clear_pending (EV_A_ (W)w);	2355	clear_pending (EV_A_ (W)w);
1767	if (expect_false (!ev_is_active (w)))	2356	if (expect_false (!ev_is_active (w)))
1768	return;	2357	return;
1769		2358
		2359	EV_FREQUENT_CHECK;
		2360
1770	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2361	wlist_del (&signals [w->signum - 1].head, (WL)w);
1771	ev_stop (EV_A_ (W)w);	2362	ev_stop (EV_A_ (W)w);
1772		2363
1773	if (!signals [w->signum - 1].head)	2364	if (!signals [w->signum - 1].head)
1774	signal (w->signum, SIG_DFL);	2365	signal (w->signum, SIG_DFL);
		2366
		2367	EV_FREQUENT_CHECK;
1775	}	2368	}
1776		2369
1777	void	2370	void
1778	ev_child_start (EV_P_ ev_child *w)	2371	ev_child_start (EV_P_ ev_child *w)
1779	{	2372	{
…		…
1781	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2374	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1782	#endif	2375	#endif
1783	if (expect_false (ev_is_active (w)))	2376	if (expect_false (ev_is_active (w)))
1784	return;	2377	return;
1785		2378
		2379	EV_FREQUENT_CHECK;
		2380
1786	ev_start (EV_A_ (W)w, 1);	2381	ev_start (EV_A_ (W)w, 1);
1787	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2382	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2383
		2384	EV_FREQUENT_CHECK;
1788	}	2385	}
1789		2386
1790	void	2387	void
1791	ev_child_stop (EV_P_ ev_child *w)	2388	ev_child_stop (EV_P_ ev_child *w)
1792	{	2389	{
1793	clear_pending (EV_A_ (W)w);	2390	clear_pending (EV_A_ (W)w);
1794	if (expect_false (!ev_is_active (w)))	2391	if (expect_false (!ev_is_active (w)))
1795	return;	2392	return;
1796		2393
		2394	EV_FREQUENT_CHECK;
		2395
1797	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2396	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1798	ev_stop (EV_A_ (W)w);	2397	ev_stop (EV_A_ (W)w);
		2398
		2399	EV_FREQUENT_CHECK;
1799	}	2400	}
1800		2401
1801	#if EV_STAT_ENABLE	2402	#if EV_STAT_ENABLE
1802		2403
1803	# ifdef _WIN32	2404	# ifdef _WIN32
…		…
1821	if (w->wd < 0)	2422	if (w->wd < 0)
1822	{	2423	{
1823	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2424	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1824		2425
1825	/* monitor some parent directory for speedup hints */	2426	/* monitor some parent directory for speedup hints */
		2427	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2428	/* but an efficiency issue only */
1826	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2429	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1827	{	2430	{
1828	char path [4096];	2431	char path [4096];
1829	strcpy (path, w->path);	2432	strcpy (path, w->path);
1830		2433
…		…
2029	else	2632	else
2030	#endif	2633	#endif
2031	ev_timer_start (EV_A_ &w->timer);	2634	ev_timer_start (EV_A_ &w->timer);
2032		2635
2033	ev_start (EV_A_ (W)w, 1);	2636	ev_start (EV_A_ (W)w, 1);
		2637
		2638	EV_FREQUENT_CHECK;
2034	}	2639	}
2035		2640
2036	void	2641	void
2037	ev_stat_stop (EV_P_ ev_stat *w)	2642	ev_stat_stop (EV_P_ ev_stat *w)
2038	{	2643	{
2039	clear_pending (EV_A_ (W)w);	2644	clear_pending (EV_A_ (W)w);
2040	if (expect_false (!ev_is_active (w)))	2645	if (expect_false (!ev_is_active (w)))
2041	return;	2646	return;
2042		2647
		2648	EV_FREQUENT_CHECK;
		2649
2043	#if EV_USE_INOTIFY	2650	#if EV_USE_INOTIFY
2044	infy_del (EV_A_ w);	2651	infy_del (EV_A_ w);
2045	#endif	2652	#endif
2046	ev_timer_stop (EV_A_ &w->timer);	2653	ev_timer_stop (EV_A_ &w->timer);
2047		2654
2048	ev_stop (EV_A_ (W)w);	2655	ev_stop (EV_A_ (W)w);
		2656
		2657	EV_FREQUENT_CHECK;
2049	}	2658	}
2050	#endif	2659	#endif
2051		2660
2052	#if EV_IDLE_ENABLE	2661	#if EV_IDLE_ENABLE
2053	void	2662	void
…		…
2055	{	2664	{
2056	if (expect_false (ev_is_active (w)))	2665	if (expect_false (ev_is_active (w)))
2057	return;	2666	return;
2058		2667
2059	pri_adjust (EV_A_ (W)w);	2668	pri_adjust (EV_A_ (W)w);
		2669
		2670	EV_FREQUENT_CHECK;
2060		2671
2061	{	2672	{
2062	int active = ++idlecnt [ABSPRI (w)];	2673	int active = ++idlecnt [ABSPRI (w)];
2063		2674
2064	++idleall;	2675	++idleall;
2065	ev_start (EV_A_ (W)w, active);	2676	ev_start (EV_A_ (W)w, active);
2066		2677
2067	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2678	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2068	idles [ABSPRI (w)][active - 1] = w;	2679	idles [ABSPRI (w)][active - 1] = w;
2069	}	2680	}
		2681
		2682	EV_FREQUENT_CHECK;
2070	}	2683	}
2071		2684
2072	void	2685	void
2073	ev_idle_stop (EV_P_ ev_idle *w)	2686	ev_idle_stop (EV_P_ ev_idle *w)
2074	{	2687	{
2075	clear_pending (EV_A_ (W)w);	2688	clear_pending (EV_A_ (W)w);
2076	if (expect_false (!ev_is_active (w)))	2689	if (expect_false (!ev_is_active (w)))
2077	return;	2690	return;
2078		2691
		2692	EV_FREQUENT_CHECK;
		2693
2079	{	2694	{
2080	int active = ((W)w)->active;	2695	int active = ev_active (w);
2081		2696
2082	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2697	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2083	((W)idles [ABSPRI (w)][active - 1])->active = active;	2698	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2084		2699
2085	ev_stop (EV_A_ (W)w);	2700	ev_stop (EV_A_ (W)w);
2086	--idleall;	2701	--idleall;
2087	}	2702	}
		2703
		2704	EV_FREQUENT_CHECK;
2088	}	2705	}
2089	#endif	2706	#endif
2090		2707
2091	void	2708	void
2092	ev_prepare_start (EV_P_ ev_prepare *w)	2709	ev_prepare_start (EV_P_ ev_prepare *w)
2093	{	2710	{
2094	if (expect_false (ev_is_active (w)))	2711	if (expect_false (ev_is_active (w)))
2095	return;	2712	return;
		2713
		2714	EV_FREQUENT_CHECK;
2096		2715
2097	ev_start (EV_A_ (W)w, ++preparecnt);	2716	ev_start (EV_A_ (W)w, ++preparecnt);
2098	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2717	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2099	prepares [preparecnt - 1] = w;	2718	prepares [preparecnt - 1] = w;
		2719
		2720	EV_FREQUENT_CHECK;
2100	}	2721	}
2101		2722
2102	void	2723	void
2103	ev_prepare_stop (EV_P_ ev_prepare *w)	2724	ev_prepare_stop (EV_P_ ev_prepare *w)
2104	{	2725	{
2105	clear_pending (EV_A_ (W)w);	2726	clear_pending (EV_A_ (W)w);
2106	if (expect_false (!ev_is_active (w)))	2727	if (expect_false (!ev_is_active (w)))
2107	return;	2728	return;
2108		2729
		2730	EV_FREQUENT_CHECK;
		2731
2109	{	2732	{
2110	int active = ((W)w)->active;	2733	int active = ev_active (w);
		2734
2111	prepares [active - 1] = prepares [--preparecnt];	2735	prepares [active - 1] = prepares [--preparecnt];
2112	((W)prepares [active - 1])->active = active;	2736	ev_active (prepares [active - 1]) = active;
2113	}	2737	}
2114		2738
2115	ev_stop (EV_A_ (W)w);	2739	ev_stop (EV_A_ (W)w);
		2740
		2741	EV_FREQUENT_CHECK;
2116	}	2742	}
2117		2743
2118	void	2744	void
2119	ev_check_start (EV_P_ ev_check *w)	2745	ev_check_start (EV_P_ ev_check *w)
2120	{	2746	{
2121	if (expect_false (ev_is_active (w)))	2747	if (expect_false (ev_is_active (w)))
2122	return;	2748	return;
		2749
		2750	EV_FREQUENT_CHECK;
2123		2751
2124	ev_start (EV_A_ (W)w, ++checkcnt);	2752	ev_start (EV_A_ (W)w, ++checkcnt);
2125	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2753	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2126	checks [checkcnt - 1] = w;	2754	checks [checkcnt - 1] = w;
		2755
		2756	EV_FREQUENT_CHECK;
2127	}	2757	}
2128		2758
2129	void	2759	void
2130	ev_check_stop (EV_P_ ev_check *w)	2760	ev_check_stop (EV_P_ ev_check *w)
2131	{	2761	{
2132	clear_pending (EV_A_ (W)w);	2762	clear_pending (EV_A_ (W)w);
2133	if (expect_false (!ev_is_active (w)))	2763	if (expect_false (!ev_is_active (w)))
2134	return;	2764	return;
2135		2765
		2766	EV_FREQUENT_CHECK;
		2767
2136	{	2768	{
2137	int active = ((W)w)->active;	2769	int active = ev_active (w);
		2770
2138	checks [active - 1] = checks [--checkcnt];	2771	checks [active - 1] = checks [--checkcnt];
2139	((W)checks [active - 1])->active = active;	2772	ev_active (checks [active - 1]) = active;
2140	}	2773	}
2141		2774
2142	ev_stop (EV_A_ (W)w);	2775	ev_stop (EV_A_ (W)w);
		2776
		2777	EV_FREQUENT_CHECK;
2143	}	2778	}
2144		2779
2145	#if EV_EMBED_ENABLE	2780	#if EV_EMBED_ENABLE
2146	void noinline	2781	void noinline
2147	ev_embed_sweep (EV_P_ ev_embed *w)	2782	ev_embed_sweep (EV_P_ ev_embed *w)
2148	{	2783	{
2149	ev_loop (w->loop, EVLOOP_NONBLOCK);	2784	ev_loop (w->other, EVLOOP_NONBLOCK);
2150	}	2785	}
2151		2786
2152	static void	2787	static void
2153	embed_cb (EV_P_ ev_io *io, int revents)	2788	embed_io_cb (EV_P_ ev_io *io, int revents)
2154	{	2789	{
2155	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2790	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2156		2791
2157	if (ev_cb (w))	2792	if (ev_cb (w))
2158	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2793	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2159	else	2794	else
2160	ev_embed_sweep (loop, w);	2795	ev_loop (w->other, EVLOOP_NONBLOCK);
2161	}	2796	}
		2797
		2798	static void
		2799	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2800	{
		2801	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2802
		2803	{
		2804	struct ev_loop *loop = w->other;
		2805
		2806	while (fdchangecnt)
		2807	{
		2808	fd_reify (EV_A);
		2809	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2810	}
		2811	}
		2812	}
		2813
		2814	#if 0
		2815	static void
		2816	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2817	{
		2818	ev_idle_stop (EV_A_ idle);
		2819	}
		2820	#endif
2162		2821
2163	void	2822	void
2164	ev_embed_start (EV_P_ ev_embed *w)	2823	ev_embed_start (EV_P_ ev_embed *w)
2165	{	2824	{
2166	if (expect_false (ev_is_active (w)))	2825	if (expect_false (ev_is_active (w)))
2167	return;	2826	return;
2168		2827
2169	{	2828	{
2170	struct ev_loop *loop = w->loop;	2829	struct ev_loop *loop = w->other;
2171	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2830	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2172	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2831	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2173	}	2832	}
		2833
		2834	EV_FREQUENT_CHECK;
2174		2835
2175	ev_set_priority (&w->io, ev_priority (w));	2836	ev_set_priority (&w->io, ev_priority (w));
2176	ev_io_start (EV_A_ &w->io);	2837	ev_io_start (EV_A_ &w->io);
2177		2838
		2839	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2840	ev_set_priority (&w->prepare, EV_MINPRI);
		2841	ev_prepare_start (EV_A_ &w->prepare);
		2842
		2843	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2844
2178	ev_start (EV_A_ (W)w, 1);	2845	ev_start (EV_A_ (W)w, 1);
		2846
		2847	EV_FREQUENT_CHECK;
2179	}	2848	}
2180		2849
2181	void	2850	void
2182	ev_embed_stop (EV_P_ ev_embed *w)	2851	ev_embed_stop (EV_P_ ev_embed *w)
2183	{	2852	{
2184	clear_pending (EV_A_ (W)w);	2853	clear_pending (EV_A_ (W)w);
2185	if (expect_false (!ev_is_active (w)))	2854	if (expect_false (!ev_is_active (w)))
2186	return;	2855	return;
2187		2856
		2857	EV_FREQUENT_CHECK;
		2858
2188	ev_io_stop (EV_A_ &w->io);	2859	ev_io_stop (EV_A_ &w->io);
		2860	ev_prepare_stop (EV_A_ &w->prepare);
2189		2861
2190	ev_stop (EV_A_ (W)w);	2862	ev_stop (EV_A_ (W)w);
		2863
		2864	EV_FREQUENT_CHECK;
2191	}	2865	}
2192	#endif	2866	#endif
2193		2867
2194	#if EV_FORK_ENABLE	2868	#if EV_FORK_ENABLE
2195	void	2869	void
2196	ev_fork_start (EV_P_ ev_fork *w)	2870	ev_fork_start (EV_P_ ev_fork *w)
2197	{	2871	{
2198	if (expect_false (ev_is_active (w)))	2872	if (expect_false (ev_is_active (w)))
2199	return;	2873	return;
		2874
		2875	EV_FREQUENT_CHECK;
2200		2876
2201	ev_start (EV_A_ (W)w, ++forkcnt);	2877	ev_start (EV_A_ (W)w, ++forkcnt);
2202	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2878	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2203	forks [forkcnt - 1] = w;	2879	forks [forkcnt - 1] = w;
		2880
		2881	EV_FREQUENT_CHECK;
2204	}	2882	}
2205		2883
2206	void	2884	void
2207	ev_fork_stop (EV_P_ ev_fork *w)	2885	ev_fork_stop (EV_P_ ev_fork *w)
2208	{	2886	{
2209	clear_pending (EV_A_ (W)w);	2887	clear_pending (EV_A_ (W)w);
2210	if (expect_false (!ev_is_active (w)))	2888	if (expect_false (!ev_is_active (w)))
2211	return;	2889	return;
2212		2890
		2891	EV_FREQUENT_CHECK;
		2892
2213	{	2893	{
2214	int active = ((W)w)->active;	2894	int active = ev_active (w);
		2895
2215	forks [active - 1] = forks [--forkcnt];	2896	forks [active - 1] = forks [--forkcnt];
2216	((W)forks [active - 1])->active = active;	2897	ev_active (forks [active - 1]) = active;
2217	}	2898	}
2218		2899
2219	ev_stop (EV_A_ (W)w);	2900	ev_stop (EV_A_ (W)w);
		2901
		2902	EV_FREQUENT_CHECK;
		2903	}
		2904	#endif
		2905
		2906	#if EV_ASYNC_ENABLE
		2907	void
		2908	ev_async_start (EV_P_ ev_async *w)
		2909	{
		2910	if (expect_false (ev_is_active (w)))
		2911	return;
		2912
		2913	evpipe_init (EV_A);
		2914
		2915	EV_FREQUENT_CHECK;
		2916
		2917	ev_start (EV_A_ (W)w, ++asynccnt);
		2918	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2919	asyncs [asynccnt - 1] = w;
		2920
		2921	EV_FREQUENT_CHECK;
		2922	}
		2923
		2924	void
		2925	ev_async_stop (EV_P_ ev_async *w)
		2926	{
		2927	clear_pending (EV_A_ (W)w);
		2928	if (expect_false (!ev_is_active (w)))
		2929	return;
		2930
		2931	EV_FREQUENT_CHECK;
		2932
		2933	{
		2934	int active = ev_active (w);
		2935
		2936	asyncs [active - 1] = asyncs [--asynccnt];
		2937	ev_active (asyncs [active - 1]) = active;
		2938	}
		2939
		2940	ev_stop (EV_A_ (W)w);
		2941
		2942	EV_FREQUENT_CHECK;
		2943	}
		2944
		2945	void
		2946	ev_async_send (EV_P_ ev_async *w)
		2947	{
		2948	w->sent = 1;
		2949	evpipe_write (EV_A_ &gotasync);
2220	}	2950	}
2221	#endif	2951	#endif
2222		2952
2223	/*****************************************************************************/	2953	/*****************************************************************************/
2224		2954
…		…
2282	ev_timer_set (&once->to, timeout, 0.);	3012	ev_timer_set (&once->to, timeout, 0.);
2283	ev_timer_start (EV_A_ &once->to);	3013	ev_timer_start (EV_A_ &once->to);
2284	}	3014	}
2285	}	3015	}
2286		3016
		3017	#if EV_MULTIPLICITY
		3018	#include "ev_wrap.h"
		3019	#endif
		3020
2287	#ifdef __cplusplus	3021	#ifdef __cplusplus
2288	}	3022	}
2289	#endif	3023	#endif
2290		3024

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