[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.176 by root, Tue Dec 11 04:31:55 2007 UTC vs.
Revision 1.249 by root, Wed May 21 23:30:52 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 1
		242	# define EV_USE_4HEAP 1
		243	# define EV_HEAP_CACHE_AT 1
		244	#endif
		245
		246	#ifndef EV_USE_4HEAP
		247	# define EV_USE_4HEAP !EV_MINIMAL
		248	#endif
		249
		250	#ifndef EV_HEAP_CACHE_AT
		251	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		252	#endif
		253
		254	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		255
197	#ifndef CLOCK_MONOTONIC	256	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	257	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
200	#endif	259	#endif
…		…
202	#ifndef CLOCK_REALTIME	261	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	262	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME 0
205	#endif	264	#endif
206		265
		266	#if !EV_STAT_ENABLE
		267	# undef EV_USE_INOTIFY
		268	# define EV_USE_INOTIFY 0
		269	#endif
		270
		271	#if !EV_USE_NANOSLEEP
		272	# ifndef _WIN32
		273	# include <sys/select.h>
		274	# endif
		275	#endif
		276
		277	#if EV_USE_INOTIFY
		278	# include <sys/inotify.h>
		279	#endif
		280
207	#if EV_SELECT_IS_WINSOCKET	281	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	282	# include <winsock.h>
209	#endif	283	#endif
210		284
211	#if !EV_STAT_ENABLE	285	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	286	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		287	# include <stdint.h>
		288	# ifdef __cplusplus
		289	extern "C" {
213	#endif	290	# endif
214		291	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	292	# ifdef __cplusplus
216	# include <sys/inotify.h>	293	}
		294	# endif
217	#endif	295	#endif
218		296
219	/**/	297	/**/
		298
		299	/* EV_VERIFY: enable internal consistency checks
		300	* undefined or zero: no verification done or available
		301	* 1 or higher: ev_loop_verify function available
		302	* 2 or higher: ev_loop_verify is called frequently
		303	*/
		304	#if EV_VERIFY >= 1
		305	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		306	#else
		307	# define EV_FREQUENT_CHECK do { } while (0)
		308	#endif
220		309
221	/*	310	/*
222	* This is used to avoid floating point rounding problems.	311	* This is used to avoid floating point rounding problems.
223	* It is added to ev_rt_now when scheduling periodics	312	* It is added to ev_rt_now when scheduling periodics
224	* to ensure progress, time-wise, even when rounding	313	* to ensure progress, time-wise, even when rounding
225	* errors are against us.	314	* errors are against us.
226	* This value is good at least till the year 4000	315	* This value is good at least till the year 4000.
227	* and intervals up to 20 years.
228	* Better solutions welcome.	316	* Better solutions welcome.
229	*/	317	*/
230	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	318	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
231		319
232	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	320	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
233	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	321	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
234	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */	322	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
235		323
236	#if __GNUC__ >= 3	324	#if __GNUC__ >= 4
237	# define expect(expr,value) __builtin_expect ((expr),(value))	325	# define expect(expr,value) __builtin_expect ((expr),(value))
238	# define noinline __attribute__ ((noinline))	326	# define noinline __attribute__ ((noinline))
239	#else	327	#else
240	# define expect(expr,value) (expr)	328	# define expect(expr,value) (expr)
241	# define noinline	329	# define noinline
242	# if __STDC_VERSION__ < 199901L	330	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
243	# define inline	331	# define inline
244	# endif	332	# endif
245	#endif	333	#endif
246		334
247	#define expect_false(expr) expect ((expr) != 0, 0)	335	#define expect_false(expr) expect ((expr) != 0, 0)
…		…
262		350
263	typedef ev_watcher *W;	351	typedef ev_watcher *W;
264	typedef ev_watcher_list *WL;	352	typedef ev_watcher_list *WL;
265	typedef ev_watcher_time *WT;	353	typedef ev_watcher_time *WT;
266		354
		355	#define ev_active(w) ((W)(w))->active
		356	#define ev_at(w) ((WT)(w))->at
		357
		358	#if EV_USE_MONOTONIC
		359	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		360	/* giving it a reasonably high chance of working on typical architetcures */
267	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	361	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		362	#endif
268		363
269	#ifdef _WIN32	364	#ifdef _WIN32
270	# include "ev_win32.c"	365	# include "ev_win32.c"
271	#endif	366	#endif
272		367
…		…
293	perror (msg);	388	perror (msg);
294	abort ();	389	abort ();
295	}	390	}
296	}	391	}
297		392
		393	static void *
		394	ev_realloc_emul (void *ptr, long size)
		395	{
		396	/* some systems, notably openbsd and darwin, fail to properly
		397	* implement realloc (x, 0) (as required by both ansi c-98 and
		398	* the single unix specification, so work around them here.
		399	*/
		400
		401	if (size)
		402	return realloc (ptr, size);
		403
		404	free (ptr);
		405	return 0;
		406	}
		407
298	static void (alloc)(void *ptr, long size);	408	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
299		409
300	void	410	void
301	ev_set_allocator (void (cb)(void *ptr, long size))	411	ev_set_allocator (void (cb)(void *ptr, long size))
302	{	412	{
303	alloc = cb;	413	alloc = cb;
304	}	414	}
305		415
306	inline_speed void *	416	inline_speed void *
307	ev_realloc (void *ptr, long size)	417	ev_realloc (void *ptr, long size)
308	{	418	{
309	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	419	ptr = alloc (ptr, size);
310		420
311	if (!ptr && size)	421	if (!ptr && size)
312	{	422	{
313	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	423	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
314	abort ();	424	abort ();
…		…
337	W w;	447	W w;
338	int events;	448	int events;
339	} ANPENDING;	449	} ANPENDING;
340		450
341	#if EV_USE_INOTIFY	451	#if EV_USE_INOTIFY
		452	/* hash table entry per inotify-id */
342	typedef struct	453	typedef struct
343	{	454	{
344	WL head;	455	WL head;
345	} ANFS;	456	} ANFS;
		457	#endif
		458
		459	/* Heap Entry */
		460	#if EV_HEAP_CACHE_AT
		461	typedef struct {
		462	ev_tstamp at;
		463	WT w;
		464	} ANHE;
		465
		466	#define ANHE_w(he) (he).w /* access watcher, read-write */
		467	#define ANHE_at(he) (he).at /* access cached at, read-only */
		468	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		469	#else
		470	typedef WT ANHE;
		471
		472	#define ANHE_w(he) (he)
		473	#define ANHE_at(he) (he)->at
		474	#define ANHE_at_cache(he)
346	#endif	475	#endif
347		476
348	#if EV_MULTIPLICITY	477	#if EV_MULTIPLICITY
349		478
350	struct ev_loop	479	struct ev_loop
…		…
408	{	537	{
409	return ev_rt_now;	538	return ev_rt_now;
410	}	539	}
411	#endif	540	#endif
412		541
		542	void
		543	ev_sleep (ev_tstamp delay)
		544	{
		545	if (delay > 0.)
		546	{
		547	#if EV_USE_NANOSLEEP
		548	struct timespec ts;
		549
		550	ts.tv_sec = (time_t)delay;
		551	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		552
		553	nanosleep (&ts, 0);
		554	#elif defined(_WIN32)
		555	Sleep ((unsigned long)(delay * 1e3));
		556	#else
		557	struct timeval tv;
		558
		559	tv.tv_sec = (time_t)delay;
		560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		561
		562	select (0, 0, 0, 0, &tv);
		563	#endif
		564	}
		565	}
		566
		567	/*****************************************************************************/
		568
		569	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2*n and >> 4 longs /
		570
413	int inline_size	571	int inline_size
414	array_nextsize (int elem, int cur, int cnt)	572	array_nextsize (int elem, int cur, int cnt)
415	{	573	{
416	int ncur = cur + 1;	574	int ncur = cur + 1;
417		575
418	do	576	do
419	ncur <<= 1;	577	ncur <<= 1;
420	while (cnt > ncur);	578	while (cnt > ncur);
421		579
422	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	580	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
423	if (elem * ncur > 4096)	581	if (elem * ncur > MALLOC_ROUND - sizeof (void ) 4)
424	{	582	{
425	ncur *= elem;	583	ncur *= elem;
426	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;	584	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void ) 4) & ~(MALLOC_ROUND - 1);
427	ncur = ncur - sizeof (void ) 4;	585	ncur = ncur - sizeof (void ) 4;
428	ncur /= elem;	586	ncur /= elem;
429	}	587	}
430		588
431	return ncur;	589	return ncur;
…		…
477	pendings [pri][w_->pending - 1].w = w_;	635	pendings [pri][w_->pending - 1].w = w_;
478	pendings [pri][w_->pending - 1].events = revents;	636	pendings [pri][w_->pending - 1].events = revents;
479	}	637	}
480	}	638	}
481		639
482	void inline_size	640	void inline_speed
483	queue_events (EV_P_ W *events, int eventcnt, int type)	641	queue_events (EV_P_ W *events, int eventcnt, int type)
484	{	642	{
485	int i;	643	int i;
486		644
487	for (i = 0; i < eventcnt; ++i)	645	for (i = 0; i < eventcnt; ++i)
…		…
534	{	692	{
535	int fd = fdchanges [i];	693	int fd = fdchanges [i];
536	ANFD *anfd = anfds + fd;	694	ANFD *anfd = anfds + fd;
537	ev_io *w;	695	ev_io *w;
538		696
539	int events = 0;	697	unsigned char events = 0;
540		698
541	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	699	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
542	events \|= w->events;	700	events \|= (unsigned char)w->events;
543		701
544	#if EV_SELECT_IS_WINSOCKET	702	#if EV_SELECT_IS_WINSOCKET
545	if (events)	703	if (events)
546	{	704	{
547	unsigned long argp;	705	unsigned long argp;
		706	#ifdef EV_FD_TO_WIN32_HANDLE
		707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		708	#else
548	anfd->handle = _get_osfhandle (fd);	709	anfd->handle = _get_osfhandle (fd);
		710	#endif
549	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
550	}	712	}
551	#endif	713	#endif
552		714
		715	{
		716	unsigned char o_events = anfd->events;
		717	unsigned char o_reify = anfd->reify;
		718
553	anfd->reify = 0;	719	anfd->reify = 0;
554
555	backend_modify (EV_A_ fd, anfd->events, events);
556	anfd->events = events;	720	anfd->events = events;
		721
		722	if (o_events != events \|\| o_reify & EV_IOFDSET)
		723	backend_modify (EV_A_ fd, o_events, events);
		724	}
557	}	725	}
558		726
559	fdchangecnt = 0;	727	fdchangecnt = 0;
560	}	728	}
561		729
562	void inline_size	730	void inline_size
563	fd_change (EV_P_ int fd)	731	fd_change (EV_P_ int fd, int flags)
564	{	732	{
565	if (expect_false (anfds [fd].reify))	733	unsigned char reify = anfds [fd].reify;
566	return;
567
568	anfds [fd].reify = 1;	734	anfds [fd].reify \|= flags;
569		735
		736	if (expect_true (!reify))
		737	{
570	++fdchangecnt;	738	++fdchangecnt;
571	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	739	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
572	fdchanges [fdchangecnt - 1] = fd;	740	fdchanges [fdchangecnt - 1] = fd;
		741	}
573	}	742	}
574		743
575	void inline_speed	744	void inline_speed
576	fd_kill (EV_P_ int fd)	745	fd_kill (EV_P_ int fd)
577	{	746	{
…		…
628		797
629	for (fd = 0; fd < anfdmax; ++fd)	798	for (fd = 0; fd < anfdmax; ++fd)
630	if (anfds [fd].events)	799	if (anfds [fd].events)
631	{	800	{
632	anfds [fd].events = 0;	801	anfds [fd].events = 0;
633	fd_change (EV_A_ fd);	802	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
634	}	803	}
635	}	804	}
636		805
637	/*****************************************************************************/	806	/*****************************************************************************/
638		807
		808	/*
		809	* the heap functions want a real array index. array index 0 uis guaranteed to not
		810	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		811	* the branching factor of the d-tree.
		812	*/
		813
		814	/*
		815	* at the moment we allow libev the luxury of two heaps,
		816	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		817	* which is more cache-efficient.
		818	* the difference is about 5% with 50000+ watchers.
		819	*/
		820	#if EV_USE_4HEAP
		821
		822	#define DHEAP 4
		823	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		824	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		825	#define UPHEAP_DONE(p,k) ((p) == (k))
		826
		827	/* away from the root */
639	void inline_speed	828	void inline_speed
640	upheap (WT *heap, int k)	829	downheap (ANHE *heap, int N, int k)
641	{	830	{
642	WT w = heap [k];	831	ANHE he = heap [k];
		832	ANHE *E = heap + N + HEAP0;
643		833
644	while (k && heap [k >> 1]->at > w->at)	834	for (;;)
645	{
646	heap [k] = heap [k >> 1];
647	((W)heap [k])->active = k + 1;
648	k >>= 1;
649	}	835	{
		836	ev_tstamp minat;
		837	ANHE *minpos;
		838	ANHE pos = heap + DHEAP (k - HEAP0) + HEAP0 + 1;
650		839
		840	/* find minimum child */
		841	if (expect_true (pos + DHEAP - 1 < E))
		842	{
		843	/* fast path / (minpos = pos + 0), (minat = ANHE_at (minpos));
		844	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		845	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		846	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		847	}
		848	else if (pos < E)
		849	{
		850	/* slow path / (minpos = pos + 0), (minat = ANHE_at (minpos));
		851	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		852	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		853	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		854	}
		855	else
		856	break;
		857
		858	if (ANHE_at (he) <= minat)
		859	break;
		860
		861	heap [k] = *minpos;
		862	ev_active (ANHE_w (*minpos)) = k;
		863
		864	k = minpos - heap;
		865	}
		866
651	heap [k] = w;	867	heap [k] = he;
652	((W)heap [k])->active = k + 1;	868	ev_active (ANHE_w (he)) = k;
653
654	}	869	}
655		870
		871	#else /* 4HEAP */
		872
		873	#define HEAP0 1
		874	#define HPARENT(k) ((k) >> 1)
		875	#define UPHEAP_DONE(p,k) (!(p))
		876
		877	/* away from the root */
656	void inline_speed	878	void inline_speed
657	downheap (WT *heap, int N, int k)	879	downheap (ANHE *heap, int N, int k)
658	{	880	{
659	WT w = heap [k];	881	ANHE he = heap [k];
660		882
661	while (k < (N >> 1))	883	for (;;)
662	{	884	{
663	int j = k << 1;	885	int c = k << 1;
664		886
665	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	887	if (c > N + HEAP0 - 1)
666	++j;
667
668	if (w->at <= heap [j]->at)
669	break;	888	break;
670		889
		890	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		891	? 1 : 0;
		892
		893	if (ANHE_at (he) <= ANHE_at (heap [c]))
		894	break;
		895
671	heap [k] = heap [j];	896	heap [k] = heap [c];
672	((W)heap [k])->active = k + 1;	897	ev_active (ANHE_w (heap [k])) = k;
		898
673	k = j;	899	k = c;
674	}	900	}
675		901
676	heap [k] = w;	902	heap [k] = he;
677	((W)heap [k])->active = k + 1;	903	ev_active (ANHE_w (he)) = k;
		904	}
		905	#endif
		906
		907	/* towards the root */
		908	void inline_speed
		909	upheap (ANHE *heap, int k)
		910	{
		911	ANHE he = heap [k];
		912
		913	for (;;)
		914	{
		915	int p = HPARENT (k);
		916
		917	if (UPHEAP_DONE (p, k) \|\| ANHE_at (heap [p]) <= ANHE_at (he))
		918	break;
		919
		920	heap [k] = heap [p];
		921	ev_active (ANHE_w (heap [k])) = k;
		922	k = p;
		923	}
		924
		925	heap [k] = he;
		926	ev_active (ANHE_w (he)) = k;
678	}	927	}
679		928
680	void inline_size	929	void inline_size
681	adjustheap (WT *heap, int N, int k)	930	adjustheap (ANHE *heap, int N, int k)
682	{	931	{
		932	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
683	upheap (heap, k);	933	upheap (heap, k);
		934	else
684	downheap (heap, N, k);	935	downheap (heap, N, k);
685	}	936	}
		937
		938	/* rebuild the heap: this function is used only once and executed rarely */
		939	void inline_size
		940	reheap (ANHE *heap, int N)
		941	{
		942	int i;
		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);
		947	}
		948
		949	#if EV_VERIFY
		950	static void
		951	checkheap (ANHE *heap, int N)
		952	{
		953	int i;
		954
		955	for (i = HEAP0; i < N + HEAP0; ++i)
		956	{
		957	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		958	assert (("heap condition violated", i == HEAP0 \|\| ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		959	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		960	}
		961	}
		962	#endif
686		963
687	/*****************************************************************************/	964	/*****************************************************************************/
688		965
689	typedef struct	966	typedef struct
690	{	967	{
691	WL head;	968	WL head;
692	sig_atomic_t volatile gotsig;	969	EV_ATOMIC_T gotsig;
693	} ANSIG;	970	} ANSIG;
694		971
695	static ANSIG *signals;	972	static ANSIG *signals;
696	static int signalmax;	973	static int signalmax;
697		974
698	static int sigpipe [2];	975	static EV_ATOMIC_T gotsig;
699	static sig_atomic_t volatile gotsig;
700	static ev_io sigev;
701		976
702	void inline_size	977	void inline_size
703	signals_init (ANSIG *base, int count)	978	signals_init (ANSIG *base, int count)
704	{	979	{
705	while (count--)	980	while (count--)
…		…
709		984
710	++base;	985	++base;
711	}	986	}
712	}	987	}
713		988
714	static void	989	/*****************************************************************************/
715	sighandler (int signum)
716	{
717	#if _WIN32
718	signal (signum, sighandler);
719	#endif
720
721	signals [signum - 1].gotsig = 1;
722
723	if (!gotsig)
724	{
725	int old_errno = errno;
726	gotsig = 1;
727	write (sigpipe [1], &signum, 1);
728	errno = old_errno;
729	}
730	}
731
732	void noinline
733	ev_feed_signal_event (EV_P_ int signum)
734	{
735	WL w;
736
737	#if EV_MULTIPLICITY
738	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
739	#endif
740
741	--signum;
742
743	if (signum < 0 \|\| signum >= signalmax)
744	return;
745
746	signals [signum].gotsig = 0;
747
748	for (w = signals [signum].head; w; w = w->next)
749	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
750	}
751
752	static void
753	sigcb (EV_P_ ev_io *iow, int revents)
754	{
755	int signum;
756
757	read (sigpipe [0], &revents, 1);
758	gotsig = 0;
759
760	for (signum = signalmax; signum--; )
761	if (signals [signum].gotsig)
762	ev_feed_signal_event (EV_A_ signum + 1);
763	}
764		990
765	void inline_speed	991	void inline_speed
766	fd_intern (int fd)	992	fd_intern (int fd)
767	{	993	{
768	#ifdef _WIN32	994	#ifdef _WIN32
…		…
773	fcntl (fd, F_SETFL, O_NONBLOCK);	999	fcntl (fd, F_SETFL, O_NONBLOCK);
774	#endif	1000	#endif
775	}	1001	}
776		1002
777	static void noinline	1003	static void noinline
778	siginit (EV_P)	1004	evpipe_init (EV_P)
779	{	1005	{
		1006	if (!ev_is_active (&pipeev))
		1007	{
		1008	#if EV_USE_EVENTFD
		1009	if ((evfd = eventfd (0, 0)) >= 0)
		1010	{
		1011	evpipe [0] = -1;
		1012	fd_intern (evfd);
		1013	ev_io_set (&pipeev, evfd, EV_READ);
		1014	}
		1015	else
		1016	#endif
		1017	{
		1018	while (pipe (evpipe))
		1019	syserr ("(libev) error creating signal/async pipe");
		1020
780	fd_intern (sigpipe [0]);	1021	fd_intern (evpipe [0]);
781	fd_intern (sigpipe [1]);	1022	fd_intern (evpipe [1]);
		1023	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1024	}
782		1025
783	ev_io_set (&sigev, sigpipe [0], EV_READ);
784	ev_io_start (EV_A_ &sigev);	1026	ev_io_start (EV_A_ &pipeev);
785	ev_unref (EV_A); /* child watcher should not keep loop alive */	1027	ev_unref (EV_A); /* watcher should not keep loop alive */
		1028	}
		1029	}
		1030
		1031	void inline_size
		1032	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1033	{
		1034	if (!*flag)
		1035	{
		1036	int old_errno = errno; /* save errno because write might clobber it */
		1037
		1038	*flag = 1;
		1039
		1040	#if EV_USE_EVENTFD
		1041	if (evfd >= 0)
		1042	{
		1043	uint64_t counter = 1;
		1044	write (evfd, &counter, sizeof (uint64_t));
		1045	}
		1046	else
		1047	#endif
		1048	write (evpipe [1], &old_errno, 1);
		1049
		1050	errno = old_errno;
		1051	}
		1052	}
		1053
		1054	static void
		1055	pipecb (EV_P_ ev_io *iow, int revents)
		1056	{
		1057	#if EV_USE_EVENTFD
		1058	if (evfd >= 0)
		1059	{
		1060	uint64_t counter;
		1061	read (evfd, &counter, sizeof (uint64_t));
		1062	}
		1063	else
		1064	#endif
		1065	{
		1066	char dummy;
		1067	read (evpipe [0], &dummy, 1);
		1068	}
		1069
		1070	if (gotsig && ev_is_default_loop (EV_A))
		1071	{
		1072	int signum;
		1073	gotsig = 0;
		1074
		1075	for (signum = signalmax; signum--; )
		1076	if (signals [signum].gotsig)
		1077	ev_feed_signal_event (EV_A_ signum + 1);
		1078	}
		1079
		1080	#if EV_ASYNC_ENABLE
		1081	if (gotasync)
		1082	{
		1083	int i;
		1084	gotasync = 0;
		1085
		1086	for (i = asynccnt; i--; )
		1087	if (asyncs [i]->sent)
		1088	{
		1089	asyncs [i]->sent = 0;
		1090	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1091	}
		1092	}
		1093	#endif
786	}	1094	}
787		1095
788	/*****************************************************************************/	1096	/*****************************************************************************/
789		1097
		1098	static void
		1099	ev_sighandler (int signum)
		1100	{
		1101	#if EV_MULTIPLICITY
		1102	struct ev_loop *loop = &default_loop_struct;
		1103	#endif
		1104
		1105	#if _WIN32
		1106	signal (signum, ev_sighandler);
		1107	#endif
		1108
		1109	signals [signum - 1].gotsig = 1;
		1110	evpipe_write (EV_A_ &gotsig);
		1111	}
		1112
		1113	void noinline
		1114	ev_feed_signal_event (EV_P_ int signum)
		1115	{
		1116	WL w;
		1117
		1118	#if EV_MULTIPLICITY
		1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1120	#endif
		1121
		1122	--signum;
		1123
		1124	if (signum < 0 \|\| signum >= signalmax)
		1125	return;
		1126
		1127	signals [signum].gotsig = 0;
		1128
		1129	for (w = signals [signum].head; w; w = w->next)
		1130	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1131	}
		1132
		1133	/*****************************************************************************/
		1134
790	static ev_child *childs [EV_PID_HASHSIZE];	1135	static WL childs [EV_PID_HASHSIZE];
791		1136
792	#ifndef _WIN32	1137	#ifndef _WIN32
793		1138
794	static ev_signal childev;	1139	static ev_signal childev;
795		1140
		1141	#ifndef WIFCONTINUED
		1142	# define WIFCONTINUED(status) 0
		1143	#endif
		1144
796	void inline_speed	1145	void inline_speed
797	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1146	child_reap (EV_P_ int chain, int pid, int status)
798	{	1147	{
799	ev_child *w;	1148	ev_child *w;
		1149	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
800		1150
801	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1151	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1152	{
802	if (w->pid == pid \|\| !w->pid)	1153	if ((w->pid == pid \|\| !w->pid)
		1154	&& (!traced \|\| (w->flags & 1)))
803	{	1155	{
804	ev_set_priority (w, ev_priority (sw)); /* need to do it now */	1156	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
805	w->rpid = pid;	1157	w->rpid = pid;
806	w->rstatus = status;	1158	w->rstatus = status;
807	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1159	ev_feed_event (EV_A_ (W)w, EV_CHILD);
808	}	1160	}
		1161	}
809	}	1162	}
810		1163
811	#ifndef WCONTINUED	1164	#ifndef WCONTINUED
812	# define WCONTINUED 0	1165	# define WCONTINUED 0
813	#endif	1166	#endif
…		…
822	if (!WCONTINUED	1175	if (!WCONTINUED
823	\|\| errno != EINVAL	1176	\|\| errno != EINVAL
824	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1177	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
825	return;	1178	return;
826		1179
827	/* make sure we are called again until all childs have been reaped */	1180	/* make sure we are called again until all children have been reaped */
828	/* we need to do it this way so that the callback gets called before we continue */	1181	/* we need to do it this way so that the callback gets called before we continue */
829	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1182	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
830		1183
831	child_reap (EV_A_ sw, pid, pid, status);	1184	child_reap (EV_A_ pid, pid, status);
832	if (EV_PID_HASHSIZE > 1)	1185	if (EV_PID_HASHSIZE > 1)
833	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1186	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
834	}	1187	}
835		1188
836	#endif	1189	#endif
837		1190
838	/*****************************************************************************/	1191	/*****************************************************************************/
…		…
910	}	1263	}
911		1264
912	unsigned int	1265	unsigned int
913	ev_embeddable_backends (void)	1266	ev_embeddable_backends (void)
914	{	1267	{
915	return EVBACKEND_EPOLL	1268	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
916	\| EVBACKEND_KQUEUE	1269
917	\| EVBACKEND_PORT;	1270	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1271	/* please fix it and tell me how to detect the fix */
		1272	flags &= ~EVBACKEND_EPOLL;
		1273
		1274	return flags;
918	}	1275	}
919		1276
920	unsigned int	1277	unsigned int
921	ev_backend (EV_P)	1278	ev_backend (EV_P)
922	{	1279	{
…		…
925		1282
926	unsigned int	1283	unsigned int
927	ev_loop_count (EV_P)	1284	ev_loop_count (EV_P)
928	{	1285	{
929	return loop_count;	1286	return loop_count;
		1287	}
		1288
		1289	void
		1290	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1291	{
		1292	io_blocktime = interval;
		1293	}
		1294
		1295	void
		1296	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1297	{
		1298	timeout_blocktime = interval;
930	}	1299	}
931		1300
932	static void noinline	1301	static void noinline
933	loop_init (EV_P_ unsigned int flags)	1302	loop_init (EV_P_ unsigned int flags)
934	{	1303	{
…		…
940	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
941	have_monotonic = 1;	1310	have_monotonic = 1;
942	}	1311	}
943	#endif	1312	#endif
944		1313
945	ev_rt_now = ev_time ();	1314	ev_rt_now = ev_time ();
946	mn_now = get_clock ();	1315	mn_now = get_clock ();
947	now_floor = mn_now;	1316	now_floor = mn_now;
948	rtmn_diff = ev_rt_now - mn_now;	1317	rtmn_diff = ev_rt_now - mn_now;
		1318
		1319	io_blocktime = 0.;
		1320	timeout_blocktime = 0.;
		1321	backend = 0;
		1322	backend_fd = -1;
		1323	gotasync = 0;
		1324	#if EV_USE_INOTIFY
		1325	fs_fd = -2;
		1326	#endif
949		1327
950	/* pid check not overridable via env */	1328	/* pid check not overridable via env */
951	#ifndef _WIN32	1329	#ifndef _WIN32
952	if (flags & EVFLAG_FORKCHECK)	1330	if (flags & EVFLAG_FORKCHECK)
953	curpid = getpid ();	1331	curpid = getpid ();
…		…
956	if (!(flags & EVFLAG_NOENV)	1334	if (!(flags & EVFLAG_NOENV)
957	&& !enable_secure ()	1335	&& !enable_secure ()
958	&& getenv ("LIBEV_FLAGS"))	1336	&& getenv ("LIBEV_FLAGS"))
959	flags = atoi (getenv ("LIBEV_FLAGS"));	1337	flags = atoi (getenv ("LIBEV_FLAGS"));
960		1338
961	if (!(flags & 0x0000ffffUL))	1339	if (!(flags & 0x0000ffffU))
962	flags \|= ev_recommended_backends ();	1340	flags \|= ev_recommended_backends ();
963
964	backend = 0;
965	backend_fd = -1;
966	#if EV_USE_INOTIFY
967	fs_fd = -2;
968	#endif
969		1341
970	#if EV_USE_PORT	1342	#if EV_USE_PORT
971	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1343	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
972	#endif	1344	#endif
973	#if EV_USE_KQUEUE	1345	#if EV_USE_KQUEUE
…		…
981	#endif	1353	#endif
982	#if EV_USE_SELECT	1354	#if EV_USE_SELECT
983	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1355	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
984	#endif	1356	#endif
985		1357
986	ev_init (&sigev, sigcb);	1358	ev_init (&pipeev, pipecb);
987	ev_set_priority (&sigev, EV_MAXPRI);	1359	ev_set_priority (&pipeev, EV_MAXPRI);
988	}	1360	}
989	}	1361	}
990		1362
991	static void noinline	1363	static void noinline
992	loop_destroy (EV_P)	1364	loop_destroy (EV_P)
993	{	1365	{
994	int i;	1366	int i;
		1367
		1368	if (ev_is_active (&pipeev))
		1369	{
		1370	ev_ref (EV_A); /* signal watcher */
		1371	ev_io_stop (EV_A_ &pipeev);
		1372
		1373	#if EV_USE_EVENTFD
		1374	if (evfd >= 0)
		1375	close (evfd);
		1376	#endif
		1377
		1378	if (evpipe [0] >= 0)
		1379	{
		1380	close (evpipe [0]);
		1381	close (evpipe [1]);
		1382	}
		1383	}
995		1384
996	#if EV_USE_INOTIFY	1385	#if EV_USE_INOTIFY
997	if (fs_fd >= 0)	1386	if (fs_fd >= 0)
998	close (fs_fd);	1387	close (fs_fd);
999	#endif	1388	#endif
…		…
1022	array_free (pending, [i]);	1411	array_free (pending, [i]);
1023	#if EV_IDLE_ENABLE	1412	#if EV_IDLE_ENABLE
1024	array_free (idle, [i]);	1413	array_free (idle, [i]);
1025	#endif	1414	#endif
1026	}	1415	}
		1416
		1417	ev_free (anfds); anfdmax = 0;
1027		1418
1028	/* have to use the microsoft-never-gets-it-right macro */	1419	/* have to use the microsoft-never-gets-it-right macro */
1029	array_free (fdchange, EMPTY);	1420	array_free (fdchange, EMPTY);
1030	array_free (timer, EMPTY);	1421	array_free (timer, EMPTY);
1031	#if EV_PERIODIC_ENABLE	1422	#if EV_PERIODIC_ENABLE
1032	array_free (periodic, EMPTY);	1423	array_free (periodic, EMPTY);
1033	#endif	1424	#endif
		1425	#if EV_FORK_ENABLE
		1426	array_free (fork, EMPTY);
		1427	#endif
1034	array_free (prepare, EMPTY);	1428	array_free (prepare, EMPTY);
1035	array_free (check, EMPTY);	1429	array_free (check, EMPTY);
		1430	#if EV_ASYNC_ENABLE
		1431	array_free (async, EMPTY);
		1432	#endif
1036		1433
1037	backend = 0;	1434	backend = 0;
1038	}	1435	}
1039		1436
		1437	#if EV_USE_INOTIFY
1040	void inline_size infy_fork (EV_P);	1438	void inline_size infy_fork (EV_P);
		1439	#endif
1041		1440
1042	void inline_size	1441	void inline_size
1043	loop_fork (EV_P)	1442	loop_fork (EV_P)
1044	{	1443	{
1045	#if EV_USE_PORT	1444	#if EV_USE_PORT
…		…
1053	#endif	1452	#endif
1054	#if EV_USE_INOTIFY	1453	#if EV_USE_INOTIFY
1055	infy_fork (EV_A);	1454	infy_fork (EV_A);
1056	#endif	1455	#endif
1057		1456
1058	if (ev_is_active (&sigev))	1457	if (ev_is_active (&pipeev))
1059	{	1458	{
1060	/* default loop */	1459	/* this "locks" the handlers against writing to the pipe */
		1460	/* while we modify the fd vars */
		1461	gotsig = 1;
		1462	#if EV_ASYNC_ENABLE
		1463	gotasync = 1;
		1464	#endif
1061		1465
1062	ev_ref (EV_A);	1466	ev_ref (EV_A);
1063	ev_io_stop (EV_A_ &sigev);	1467	ev_io_stop (EV_A_ &pipeev);
		1468
		1469	#if EV_USE_EVENTFD
		1470	if (evfd >= 0)
		1471	close (evfd);
		1472	#endif
		1473
		1474	if (evpipe [0] >= 0)
		1475	{
1064	close (sigpipe [0]);	1476	close (evpipe [0]);
1065	close (sigpipe [1]);	1477	close (evpipe [1]);
		1478	}
1066		1479
1067	while (pipe (sigpipe))
1068	syserr ("(libev) error creating pipe");
1069
1070	siginit (EV_A);	1480	evpipe_init (EV_A);
		1481	/* now iterate over everything, in case we missed something */
		1482	pipecb (EV_A_ &pipeev, EV_READ);
1071	}	1483	}
1072		1484
1073	postfork = 0;	1485	postfork = 0;
1074	}	1486	}
1075		1487
…		…
1097	}	1509	}
1098		1510
1099	void	1511	void
1100	ev_loop_fork (EV_P)	1512	ev_loop_fork (EV_P)
1101	{	1513	{
1102	postfork = 1;	1514	postfork = 1; /* must be in line with ev_default_fork */
1103	}	1515	}
		1516
		1517	#if EV_VERIFY
		1518	static void
		1519	array_check (W **ws, int cnt)
		1520	{
		1521	while (cnt--)
		1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1523	}
		1524
		1525	static void
		1526	ev_loop_verify (EV_P)
		1527	{
		1528	int i;
		1529
		1530	checkheap (timers, timercnt);
		1531	#if EV_PERIODIC_ENABLE
		1532	checkheap (periodics, periodiccnt);
		1533	#endif
		1534
		1535	#if EV_IDLE_ENABLE
		1536	for (i = NUMPRI; i--; )
		1537	array_check ((W **)idles [i], idlecnt [i]);
		1538	#endif
		1539	#if EV_FORK_ENABLE
		1540	array_check ((W **)forks, forkcnt);
		1541	#endif
		1542	array_check ((W **)prepares, preparecnt);
		1543	array_check ((W **)checks, checkcnt);
		1544	#if EV_ASYNC_ENABLE
		1545	array_check ((W **)asyncs, asynccnt);
		1546	#endif
		1547	}
		1548	#endif
1104		1549
1105	#endif	1550	#endif
1106		1551
1107	#if EV_MULTIPLICITY	1552	#if EV_MULTIPLICITY
1108	struct ev_loop *	1553	struct ev_loop *
…		…
1110	#else	1555	#else
1111	int	1556	int
1112	ev_default_loop (unsigned int flags)	1557	ev_default_loop (unsigned int flags)
1113	#endif	1558	#endif
1114	{	1559	{
1115	if (sigpipe [0] == sigpipe [1])
1116	if (pipe (sigpipe))
1117	return 0;
1118
1119	if (!ev_default_loop_ptr)	1560	if (!ev_default_loop_ptr)
1120	{	1561	{
1121	#if EV_MULTIPLICITY	1562	#if EV_MULTIPLICITY
1122	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1563	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1123	#else	1564	#else
…		…
1126		1567
1127	loop_init (EV_A_ flags);	1568	loop_init (EV_A_ flags);
1128		1569
1129	if (ev_backend (EV_A))	1570	if (ev_backend (EV_A))
1130	{	1571	{
1131	siginit (EV_A);
1132
1133	#ifndef _WIN32	1572	#ifndef _WIN32
1134	ev_signal_init (&childev, childcb, SIGCHLD);	1573	ev_signal_init (&childev, childcb, SIGCHLD);
1135	ev_set_priority (&childev, EV_MAXPRI);	1574	ev_set_priority (&childev, EV_MAXPRI);
1136	ev_signal_start (EV_A_ &childev);	1575	ev_signal_start (EV_A_ &childev);
1137	ev_unref (EV_A); /* child watcher should not keep loop alive */	1576	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1154	#ifndef _WIN32	1593	#ifndef _WIN32
1155	ev_ref (EV_A); /* child watcher */	1594	ev_ref (EV_A); /* child watcher */
1156	ev_signal_stop (EV_A_ &childev);	1595	ev_signal_stop (EV_A_ &childev);
1157	#endif	1596	#endif
1158		1597
1159	ev_ref (EV_A); /* signal watcher */
1160	ev_io_stop (EV_A_ &sigev);
1161
1162	close (sigpipe [0]); sigpipe [0] = 0;
1163	close (sigpipe [1]); sigpipe [1] = 0;
1164
1165	loop_destroy (EV_A);	1598	loop_destroy (EV_A);
1166	}	1599	}
1167		1600
1168	void	1601	void
1169	ev_default_fork (void)	1602	ev_default_fork (void)
…		…
1171	#if EV_MULTIPLICITY	1604	#if EV_MULTIPLICITY
1172	struct ev_loop *loop = ev_default_loop_ptr;	1605	struct ev_loop *loop = ev_default_loop_ptr;
1173	#endif	1606	#endif
1174		1607
1175	if (backend)	1608	if (backend)
1176	postfork = 1;	1609	postfork = 1; /* must be in line with ev_loop_fork */
1177	}	1610	}
1178		1611
1179	/*****************************************************************************/	1612	/*****************************************************************************/
1180		1613
1181	void	1614	void
…		…
1186		1619
1187	void inline_speed	1620	void inline_speed
1188	call_pending (EV_P)	1621	call_pending (EV_P)
1189	{	1622	{
1190	int pri;	1623	int pri;
		1624
		1625	EV_FREQUENT_CHECK;
1191		1626
1192	for (pri = NUMPRI; pri--; )	1627	for (pri = NUMPRI; pri--; )
1193	while (pendingcnt [pri])	1628	while (pendingcnt [pri])
1194	{	1629	{
1195	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
…		…
1200		1635
1201	p->w->pending = 0;	1636	p->w->pending = 0;
1202	EV_CB_INVOKE (p->w, p->events);	1637	EV_CB_INVOKE (p->w, p->events);
1203	}	1638	}
1204	}	1639	}
1205	}
1206		1640
1207	void inline_size	1641	EV_FREQUENT_CHECK;
1208	timers_reify (EV_P)
1209	{
1210	while (timercnt && ((WT)timers [0])->at <= mn_now)
1211	{
1212	ev_timer *w = timers [0];
1213
1214	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1215
1216	/* first reschedule or stop timer */
1217	if (w->repeat)
1218	{
1219	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1220
1221	((WT)w)->at += w->repeat;
1222	if (((WT)w)->at < mn_now)
1223	((WT)w)->at = mn_now;
1224
1225	downheap ((WT *)timers, timercnt, 0);
1226	}
1227	else
1228	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1229
1230	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1231	}
1232	}	1642	}
1233
1234	#if EV_PERIODIC_ENABLE
1235	void inline_size
1236	periodics_reify (EV_P)
1237	{
1238	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1239	{
1240	ev_periodic *w = periodics [0];
1241
1242	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1243
1244	/* first reschedule or stop timer */
1245	if (w->reschedule_cb)
1246	{
1247	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1248	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1249	downheap ((WT *)periodics, periodiccnt, 0);
1250	}
1251	else if (w->interval)
1252	{
1253	((WT)w)->at = w->offset + floor ((ev_rt_now + TIME_EPSILON - w->offset) / w->interval + 1.) * w->interval;
1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1255	downheap ((WT *)periodics, periodiccnt, 0);
1256	}
1257	else
1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1259
1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1261	}
1262	}
1263
1264	static void noinline
1265	periodics_reschedule (EV_P)
1266	{
1267	int i;
1268
1269	/* adjust periodics after time jump */
1270	for (i = 0; i < periodiccnt; ++i)
1271	{
1272	ev_periodic *w = periodics [i];
1273
1274	if (w->reschedule_cb)
1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1276	else if (w->interval)
1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1278	}
1279
1280	/* now rebuild the heap */
1281	for (i = periodiccnt >> 1; i--; )
1282	downheap ((WT *)periodics, periodiccnt, i);
1283	}
1284	#endif
1285		1643
1286	#if EV_IDLE_ENABLE	1644	#if EV_IDLE_ENABLE
1287	void inline_size	1645	void inline_size
1288	idle_reify (EV_P)	1646	idle_reify (EV_P)
1289	{	1647	{
…		…
1304	}	1662	}
1305	}	1663	}
1306	}	1664	}
1307	#endif	1665	#endif
1308		1666
1309	int inline_size	1667	void inline_size
1310	time_update_monotonic (EV_P)	1668	timers_reify (EV_P)
1311	{	1669	{
		1670	EV_FREQUENT_CHECK;
		1671
		1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		1673	{
		1674	ev_timer w = (ev_timer )ANHE_w (timers [HEAP0]);
		1675
		1676	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
		1677
		1678	/* first reschedule or stop timer */
		1679	if (w->repeat)
		1680	{
		1681	ev_at (w) += w->repeat;
		1682	if (ev_at (w) < mn_now)
		1683	ev_at (w) = mn_now;
		1684
		1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1686
		1687	ANHE_at_cache (timers [HEAP0]);
		1688	downheap (timers, timercnt, HEAP0);
		1689	}
		1690	else
		1691	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1692
		1693	EV_FREQUENT_CHECK;
		1694	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1695	}
		1696	}
		1697
		1698	#if EV_PERIODIC_ENABLE
		1699	void inline_size
		1700	periodics_reify (EV_P)
		1701	{
		1702	EV_FREQUENT_CHECK;
		1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		1704	{
		1705	ev_periodic w = (ev_periodic )ANHE_w (periodics [HEAP0]);
		1706
		1707	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
		1708
		1709	/* first reschedule or stop timer */
		1710	if (w->reschedule_cb)
		1711	{
		1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1713
		1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1715
		1716	ANHE_at_cache (periodics [HEAP0]);
		1717	downheap (periodics, periodiccnt, HEAP0);
		1718	EV_FREQUENT_CHECK;
		1719	}
		1720	else if (w->interval)
		1721	{
		1722	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1723	/* if next trigger time is not sufficiently in the future, put it there */
		1724	/* this might happen because of floating point inexactness */
		1725	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1726	{
		1727	ev_at (w) += w->interval;
		1728
		1729	/* if interval is unreasonably low we might still have a time in the past */
		1730	/* so correct this. this will make the periodic very inexact, but the user */
		1731	/* has effectively asked to get triggered more often than possible */
		1732	if (ev_at (w) < ev_rt_now)
		1733	ev_at (w) = ev_rt_now;
		1734	}
		1735
		1736	ANHE_at_cache (periodics [HEAP0]);
		1737	downheap (periodics, periodiccnt, HEAP0);
		1738	}
		1739	else
		1740	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1741
		1742	EV_FREQUENT_CHECK;
		1743	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
		1744	}
		1745	}
		1746
		1747	static void noinline
		1748	periodics_reschedule (EV_P)
		1749	{
		1750	int i;
		1751
		1752	/* adjust periodics after time jump */
		1753	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1754	{
		1755	ev_periodic w = (ev_periodic )ANHE_w (periodics [i]);
		1756
		1757	if (w->reschedule_cb)
		1758	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1759	else if (w->interval)
		1760	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1761
		1762	ANHE_at_cache (periodics [i]);
		1763	}
		1764
		1765	reheap (periodics, periodiccnt);
		1766	}
		1767	#endif
		1768
		1769	void inline_speed
		1770	time_update (EV_P_ ev_tstamp max_block)
		1771	{
		1772	int i;
		1773
		1774	#if EV_USE_MONOTONIC
		1775	if (expect_true (have_monotonic))
		1776	{
		1777	ev_tstamp odiff = rtmn_diff;
		1778
1312	mn_now = get_clock ();	1779	mn_now = get_clock ();
1313		1780
		1781	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1782	/* interpolate in the meantime */
1314	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1783	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1315	{	1784	{
1316	ev_rt_now = rtmn_diff + mn_now;	1785	ev_rt_now = rtmn_diff + mn_now;
1317	return 0;	1786	return;
1318	}	1787	}
1319	else	1788
1320	{
1321	now_floor = mn_now;	1789	now_floor = mn_now;
1322	ev_rt_now = ev_time ();	1790	ev_rt_now = ev_time ();
1323	return 1;
1324	}
1325	}
1326		1791
1327	void inline_size	1792	/* loop a few times, before making important decisions.
1328	time_update (EV_P)	1793	* on the choice of "4": one iteration isn't enough,
1329	{	1794	* in case we get preempted during the calls to
1330	int i;	1795	* ev_time and get_clock. a second call is almost guaranteed
1331		1796	* to succeed in that case, though. and looping a few more times
1332	#if EV_USE_MONOTONIC	1797	* doesn't hurt either as we only do this on time-jumps or
1333	if (expect_true (have_monotonic))	1798	* in the unlikely event of having been preempted here.
1334	{	1799	*/
1335	if (time_update_monotonic (EV_A))	1800	for (i = 4; --i; )
1336	{	1801	{
1337	ev_tstamp odiff = rtmn_diff;
1338
1339	/* loop a few times, before making important decisions.
1340	* on the choice of "4": one iteration isn't enough,
1341	* in case we get preempted during the calls to
1342	* ev_time and get_clock. a second call is almost guaranteed
1343	* to succeed in that case, though. and looping a few more times
1344	* doesn't hurt either as we only do this on time-jumps or
1345	* in the unlikely event of having been preempted here.
1346	*/
1347	for (i = 4; --i; )
1348	{
1349	rtmn_diff = ev_rt_now - mn_now;	1802	rtmn_diff = ev_rt_now - mn_now;
1350		1803
1351	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1804	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1352	return; /* all is well */	1805	return; /* all is well */
1353		1806
1354	ev_rt_now = ev_time ();	1807	ev_rt_now = ev_time ();
1355	mn_now = get_clock ();	1808	mn_now = get_clock ();
1356	now_floor = mn_now;	1809	now_floor = mn_now;
1357	}	1810	}
1358		1811
1359	# if EV_PERIODIC_ENABLE	1812	# if EV_PERIODIC_ENABLE
1360	periodics_reschedule (EV_A);	1813	periodics_reschedule (EV_A);
1361	# endif	1814	# endif
1362	/* no timer adjustment, as the monotonic clock doesn't jump */	1815	/* no timer adjustment, as the monotonic clock doesn't jump */
1363	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1816	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1364	}
1365	}	1817	}
1366	else	1818	else
1367	#endif	1819	#endif
1368	{	1820	{
1369	ev_rt_now = ev_time ();	1821	ev_rt_now = ev_time ();
1370		1822
1371	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1823	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1372	{	1824	{
1373	#if EV_PERIODIC_ENABLE	1825	#if EV_PERIODIC_ENABLE
1374	periodics_reschedule (EV_A);	1826	periodics_reschedule (EV_A);
1375	#endif	1827	#endif
1376
1377	/* adjust timers. this is easy, as the offset is the same for all of them */	1828	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)	1829	for (i = 0; i < timercnt; ++i)
		1830	{
		1831	ANHE *he = timers + i + HEAP0;
1379	((WT)timers [i])->at += ev_rt_now - mn_now;	1832	ANHE_w (*he)->at += ev_rt_now - mn_now;
		1833	ANHE_at_cache (*he);
		1834	}
1380	}	1835	}
1381		1836
1382	mn_now = ev_rt_now;	1837	mn_now = ev_rt_now;
1383	}	1838	}
1384	}	1839	}
…		…
1398	static int loop_done;	1853	static int loop_done;
1399		1854
1400	void	1855	void
1401	ev_loop (EV_P_ int flags)	1856	ev_loop (EV_P_ int flags)
1402	{	1857	{
1403	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1858	loop_done = EVUNLOOP_CANCEL;
1404	? EVUNLOOP_ONE
1405	: EVUNLOOP_CANCEL;
1406		1859
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1408		1861
1409	do	1862	do
1410	{	1863	{
…		…
1444	/* update fd-related kernel structures */	1897	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	1898	fd_reify (EV_A);
1446		1899
1447	/* calculate blocking time */	1900	/* calculate blocking time */
1448	{	1901	{
1449	ev_tstamp block;	1902	ev_tstamp waittime = 0.;
		1903	ev_tstamp sleeptime = 0.;
1450		1904
1451	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))	1905	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1452	block = 0.; /* do not block at all */
1453	else
1454	{	1906	{
1455	/* update time to cancel out callback processing overhead */	1907	/* update time to cancel out callback processing overhead */
1456	#if EV_USE_MONOTONIC
1457	if (expect_true (have_monotonic))
1458	time_update_monotonic (EV_A);	1908	time_update (EV_A_ 1e100);
1459	else
1460	#endif
1461	{
1462	ev_rt_now = ev_time ();
1463	mn_now = ev_rt_now;
1464	}
1465		1909
1466	block = MAX_BLOCKTIME;	1910	waittime = MAX_BLOCKTIME;
1467		1911
1468	if (timercnt)	1912	if (timercnt)
1469	{	1913	{
1470	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1914	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1471	if (block > to) block = to;	1915	if (waittime > to) waittime = to;
1472	}	1916	}
1473		1917
1474	#if EV_PERIODIC_ENABLE	1918	#if EV_PERIODIC_ENABLE
1475	if (periodiccnt)	1919	if (periodiccnt)
1476	{	1920	{
1477	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1921	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1478	if (block > to) block = to;	1922	if (waittime > to) waittime = to;
1479	}	1923	}
1480	#endif	1924	#endif
1481		1925
1482	if (expect_false (block < 0.)) block = 0.;	1926	if (expect_false (waittime < timeout_blocktime))
		1927	waittime = timeout_blocktime;
		1928
		1929	sleeptime = waittime - backend_fudge;
		1930
		1931	if (expect_true (sleeptime > io_blocktime))
		1932	sleeptime = io_blocktime;
		1933
		1934	if (sleeptime)
		1935	{
		1936	ev_sleep (sleeptime);
		1937	waittime -= sleeptime;
		1938	}
1483	}	1939	}
1484		1940
1485	++loop_count;	1941	++loop_count;
1486	backend_poll (EV_A_ block);	1942	backend_poll (EV_A_ waittime);
		1943
		1944	/* update ev_rt_now, do magic */
		1945	time_update (EV_A_ waittime + sleeptime);
1487	}	1946	}
1488
1489	/* update ev_rt_now, do magic */
1490	time_update (EV_A);
1491		1947
1492	/* queue pending timers and reschedule them */	1948	/* queue pending timers and reschedule them */
1493	timers_reify (EV_A); /* relative timers called last */	1949	timers_reify (EV_A); /* relative timers called last */
1494	#if EV_PERIODIC_ENABLE	1950	#if EV_PERIODIC_ENABLE
1495	periodics_reify (EV_A); /* absolute timers called first */	1951	periodics_reify (EV_A); /* absolute timers called first */
…		…
1503	/* queue check watchers, to be executed first */	1959	/* queue check watchers, to be executed first */
1504	if (expect_false (checkcnt))	1960	if (expect_false (checkcnt))
1505	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1961	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1506		1962
1507	call_pending (EV_A);	1963	call_pending (EV_A);
1508
1509	}	1964	}
1510	while (expect_true (activecnt && !loop_done));	1965	while (expect_true (
		1966	activecnt
		1967	&& !loop_done
		1968	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1969	));
1511		1970
1512	if (loop_done == EVUNLOOP_ONE)	1971	if (loop_done == EVUNLOOP_ONE)
1513	loop_done = EVUNLOOP_CANCEL;	1972	loop_done = EVUNLOOP_CANCEL;
1514	}	1973	}
1515		1974
…		…
1604	if (expect_false (ev_is_active (w)))	2063	if (expect_false (ev_is_active (w)))
1605	return;	2064	return;
1606		2065
1607	assert (("ev_io_start called with negative fd", fd >= 0));	2066	assert (("ev_io_start called with negative fd", fd >= 0));
1608		2067
		2068	EV_FREQUENT_CHECK;
		2069
1609	ev_start (EV_A_ (W)w, 1);	2070	ev_start (EV_A_ (W)w, 1);
1610	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1611	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2072	wlist_add (&anfds[fd].head, (WL)w);
1612		2073
1613	fd_change (EV_A_ fd);	2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		2075	w->events &= ~EV_IOFDSET;
		2076
		2077	EV_FREQUENT_CHECK;
1614	}	2078	}
1615		2079
1616	void noinline	2080	void noinline
1617	ev_io_stop (EV_P_ ev_io *w)	2081	ev_io_stop (EV_P_ ev_io *w)
1618	{	2082	{
1619	clear_pending (EV_A_ (W)w);	2083	clear_pending (EV_A_ (W)w);
1620	if (expect_false (!ev_is_active (w)))	2084	if (expect_false (!ev_is_active (w)))
1621	return;	2085	return;
1622		2086
1623	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1624		2088
		2089	EV_FREQUENT_CHECK;
		2090
1625	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2091	wlist_del (&anfds[w->fd].head, (WL)w);
1626	ev_stop (EV_A_ (W)w);	2092	ev_stop (EV_A_ (W)w);
1627		2093
1628	fd_change (EV_A_ w->fd);	2094	fd_change (EV_A_ w->fd, 1);
		2095
		2096	EV_FREQUENT_CHECK;
1629	}	2097	}
1630		2098
1631	void noinline	2099	void noinline
1632	ev_timer_start (EV_P_ ev_timer *w)	2100	ev_timer_start (EV_P_ ev_timer *w)
1633	{	2101	{
1634	if (expect_false (ev_is_active (w)))	2102	if (expect_false (ev_is_active (w)))
1635	return;	2103	return;
1636		2104
1637	((WT)w)->at += mn_now;	2105	ev_at (w) += mn_now;
1638		2106
1639	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1640		2108
		2109	EV_FREQUENT_CHECK;
		2110
		2111	++timercnt;
1641	ev_start (EV_A_ (W)w, ++timercnt);	2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1642	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2113	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1643	timers [timercnt - 1] = w;	2114	ANHE_w (timers [ev_active (w)]) = (WT)w;
1644	upheap ((WT *)timers, timercnt - 1);	2115	ANHE_at_cache (timers [ev_active (w)]);
		2116	upheap (timers, ev_active (w));
1645		2117
		2118	EV_FREQUENT_CHECK;
		2119
1646	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	2120	/assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));/
1647	}	2121	}
1648		2122
1649	void noinline	2123	void noinline
1650	ev_timer_stop (EV_P_ ev_timer *w)	2124	ev_timer_stop (EV_P_ ev_timer *w)
1651	{	2125	{
1652	clear_pending (EV_A_ (W)w);	2126	clear_pending (EV_A_ (W)w);
1653	if (expect_false (!ev_is_active (w)))	2127	if (expect_false (!ev_is_active (w)))
1654	return;	2128	return;
1655		2129
1656	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2130	EV_FREQUENT_CHECK;
1657		2131
1658	{	2132	{
1659	int active = ((W)w)->active;	2133	int active = ev_active (w);
1660		2134
		2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2136
		2137	--timercnt;
		2138
1661	if (expect_true (--active < --timercnt))	2139	if (expect_true (active < timercnt + HEAP0))
1662	{	2140	{
1663	timers [active] = timers [timercnt];	2141	timers [active] = timers [timercnt + HEAP0];
1664	adjustheap ((WT *)timers, timercnt, active);	2142	adjustheap (timers, timercnt, active);
1665	}	2143	}
1666	}	2144	}
1667		2145
1668	((WT)w)->at -= mn_now;	2146	EV_FREQUENT_CHECK;
		2147
		2148	ev_at (w) -= mn_now;
1669		2149
1670	ev_stop (EV_A_ (W)w);	2150	ev_stop (EV_A_ (W)w);
1671	}	2151	}
1672		2152
1673	void noinline	2153	void noinline
1674	ev_timer_again (EV_P_ ev_timer *w)	2154	ev_timer_again (EV_P_ ev_timer *w)
1675	{	2155	{
		2156	EV_FREQUENT_CHECK;
		2157
1676	if (ev_is_active (w))	2158	if (ev_is_active (w))
1677	{	2159	{
1678	if (w->repeat)	2160	if (w->repeat)
1679	{	2161	{
1680	((WT)w)->at = mn_now + w->repeat;	2162	ev_at (w) = mn_now + w->repeat;
		2163	ANHE_at_cache (timers [ev_active (w)]);
1681	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2164	adjustheap (timers, timercnt, ev_active (w));
1682	}	2165	}
1683	else	2166	else
1684	ev_timer_stop (EV_A_ w);	2167	ev_timer_stop (EV_A_ w);
1685	}	2168	}
1686	else if (w->repeat)	2169	else if (w->repeat)
1687	{	2170	{
1688	w->at = w->repeat;	2171	ev_at (w) = w->repeat;
1689	ev_timer_start (EV_A_ w);	2172	ev_timer_start (EV_A_ w);
1690	}	2173	}
		2174
		2175	EV_FREQUENT_CHECK;
1691	}	2176	}
1692		2177
1693	#if EV_PERIODIC_ENABLE	2178	#if EV_PERIODIC_ENABLE
1694	void noinline	2179	void noinline
1695	ev_periodic_start (EV_P_ ev_periodic *w)	2180	ev_periodic_start (EV_P_ ev_periodic *w)
1696	{	2181	{
1697	if (expect_false (ev_is_active (w)))	2182	if (expect_false (ev_is_active (w)))
1698	return;	2183	return;
1699		2184
1700	if (w->reschedule_cb)	2185	if (w->reschedule_cb)
1701	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1702	else if (w->interval)	2187	else if (w->interval)
1703	{	2188	{
1704	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2189	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1705	/* this formula differs from the one in periodic_reify because we do not always round up */	2190	/* this formula differs from the one in periodic_reify because we do not always round up */
1706	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2191	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1707	}	2192	}
1708	else	2193	else
1709	((WT)w)->at = w->offset;	2194	ev_at (w) = w->offset;
1710		2195
		2196	EV_FREQUENT_CHECK;
		2197
		2198	++periodiccnt;
1711	ev_start (EV_A_ (W)w, ++periodiccnt);	2199	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1712	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2200	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1713	periodics [periodiccnt - 1] = w;	2201	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1714	upheap ((WT *)periodics, periodiccnt - 1);	2202	ANHE_at_cache (periodics [ev_active (w)]);
		2203	upheap (periodics, ev_active (w));
1715		2204
		2205	EV_FREQUENT_CHECK;
		2206
1716	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	2207	/assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));/
1717	}	2208	}
1718		2209
1719	void noinline	2210	void noinline
1720	ev_periodic_stop (EV_P_ ev_periodic *w)	2211	ev_periodic_stop (EV_P_ ev_periodic *w)
1721	{	2212	{
1722	clear_pending (EV_A_ (W)w);	2213	clear_pending (EV_A_ (W)w);
1723	if (expect_false (!ev_is_active (w)))	2214	if (expect_false (!ev_is_active (w)))
1724	return;	2215	return;
1725		2216
1726	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2217	EV_FREQUENT_CHECK;
1727		2218
1728	{	2219	{
1729	int active = ((W)w)->active;	2220	int active = ev_active (w);
1730		2221
		2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2223
		2224	--periodiccnt;
		2225
1731	if (expect_true (--active < --periodiccnt))	2226	if (expect_true (active < periodiccnt + HEAP0))
1732	{	2227	{
1733	periodics [active] = periodics [periodiccnt];	2228	periodics [active] = periodics [periodiccnt + HEAP0];
1734	adjustheap ((WT *)periodics, periodiccnt, active);	2229	adjustheap (periodics, periodiccnt, active);
1735	}	2230	}
1736	}	2231	}
		2232
		2233	EV_FREQUENT_CHECK;
1737		2234
1738	ev_stop (EV_A_ (W)w);	2235	ev_stop (EV_A_ (W)w);
1739	}	2236	}
1740		2237
1741	void noinline	2238	void noinline
…		…
1760	if (expect_false (ev_is_active (w)))	2257	if (expect_false (ev_is_active (w)))
1761	return;	2258	return;
1762		2259
1763	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1764		2261
		2262	evpipe_init (EV_A);
		2263
		2264	EV_FREQUENT_CHECK;
		2265
		2266	{
		2267	#ifndef _WIN32
		2268	sigset_t full, prev;
		2269	sigfillset (&full);
		2270	sigprocmask (SIG_SETMASK, &full, &prev);
		2271	#endif
		2272
		2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2274
		2275	#ifndef _WIN32
		2276	sigprocmask (SIG_SETMASK, &prev, 0);
		2277	#endif
		2278	}
		2279
1765	ev_start (EV_A_ (W)w, 1);	2280	ev_start (EV_A_ (W)w, 1);
1766	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1767	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2281	wlist_add (&signals [w->signum - 1].head, (WL)w);
1768		2282
1769	if (!((WL)w)->next)	2283	if (!((WL)w)->next)
1770	{	2284	{
1771	#if _WIN32	2285	#if _WIN32
1772	signal (w->signum, sighandler);	2286	signal (w->signum, ev_sighandler);
1773	#else	2287	#else
1774	struct sigaction sa;	2288	struct sigaction sa;
1775	sa.sa_handler = sighandler;	2289	sa.sa_handler = ev_sighandler;
1776	sigfillset (&sa.sa_mask);	2290	sigfillset (&sa.sa_mask);
1777	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2291	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1778	sigaction (w->signum, &sa, 0);	2292	sigaction (w->signum, &sa, 0);
1779	#endif	2293	#endif
1780	}	2294	}
		2295
		2296	EV_FREQUENT_CHECK;
1781	}	2297	}
1782		2298
1783	void noinline	2299	void noinline
1784	ev_signal_stop (EV_P_ ev_signal *w)	2300	ev_signal_stop (EV_P_ ev_signal *w)
1785	{	2301	{
1786	clear_pending (EV_A_ (W)w);	2302	clear_pending (EV_A_ (W)w);
1787	if (expect_false (!ev_is_active (w)))	2303	if (expect_false (!ev_is_active (w)))
1788	return;	2304	return;
1789		2305
		2306	EV_FREQUENT_CHECK;
		2307
1790	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2308	wlist_del (&signals [w->signum - 1].head, (WL)w);
1791	ev_stop (EV_A_ (W)w);	2309	ev_stop (EV_A_ (W)w);
1792		2310
1793	if (!signals [w->signum - 1].head)	2311	if (!signals [w->signum - 1].head)
1794	signal (w->signum, SIG_DFL);	2312	signal (w->signum, SIG_DFL);
		2313
		2314	EV_FREQUENT_CHECK;
1795	}	2315	}
1796		2316
1797	void	2317	void
1798	ev_child_start (EV_P_ ev_child *w)	2318	ev_child_start (EV_P_ ev_child *w)
1799	{	2319	{
…		…
1801	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1802	#endif	2322	#endif
1803	if (expect_false (ev_is_active (w)))	2323	if (expect_false (ev_is_active (w)))
1804	return;	2324	return;
1805		2325
		2326	EV_FREQUENT_CHECK;
		2327
1806	ev_start (EV_A_ (W)w, 1);	2328	ev_start (EV_A_ (W)w, 1);
1807	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2329	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2330
		2331	EV_FREQUENT_CHECK;
1808	}	2332	}
1809		2333
1810	void	2334	void
1811	ev_child_stop (EV_P_ ev_child *w)	2335	ev_child_stop (EV_P_ ev_child *w)
1812	{	2336	{
1813	clear_pending (EV_A_ (W)w);	2337	clear_pending (EV_A_ (W)w);
1814	if (expect_false (!ev_is_active (w)))	2338	if (expect_false (!ev_is_active (w)))
1815	return;	2339	return;
1816		2340
		2341	EV_FREQUENT_CHECK;
		2342
1817	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2343	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1818	ev_stop (EV_A_ (W)w);	2344	ev_stop (EV_A_ (W)w);
		2345
		2346	EV_FREQUENT_CHECK;
1819	}	2347	}
1820		2348
1821	#if EV_STAT_ENABLE	2349	#if EV_STAT_ENABLE
1822		2350
1823	# ifdef _WIN32	2351	# ifdef _WIN32
…		…
1841	if (w->wd < 0)	2369	if (w->wd < 0)
1842	{	2370	{
1843	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2371	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1844		2372
1845	/* monitor some parent directory for speedup hints */	2373	/* monitor some parent directory for speedup hints */
		2374	/* note that exceeding the hardcoded limit is not a correctness issue, */
		2375	/* but an efficiency issue only */
1846	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2376	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
1847	{	2377	{
1848	char path [4096];	2378	char path [4096];
1849	strcpy (path, w->path);	2379	strcpy (path, w->path);
1850		2380
…		…
2049	else	2579	else
2050	#endif	2580	#endif
2051	ev_timer_start (EV_A_ &w->timer);	2581	ev_timer_start (EV_A_ &w->timer);
2052		2582
2053	ev_start (EV_A_ (W)w, 1);	2583	ev_start (EV_A_ (W)w, 1);
		2584
		2585	EV_FREQUENT_CHECK;
2054	}	2586	}
2055		2587
2056	void	2588	void
2057	ev_stat_stop (EV_P_ ev_stat *w)	2589	ev_stat_stop (EV_P_ ev_stat *w)
2058	{	2590	{
2059	clear_pending (EV_A_ (W)w);	2591	clear_pending (EV_A_ (W)w);
2060	if (expect_false (!ev_is_active (w)))	2592	if (expect_false (!ev_is_active (w)))
2061	return;	2593	return;
2062		2594
		2595	EV_FREQUENT_CHECK;
		2596
2063	#if EV_USE_INOTIFY	2597	#if EV_USE_INOTIFY
2064	infy_del (EV_A_ w);	2598	infy_del (EV_A_ w);
2065	#endif	2599	#endif
2066	ev_timer_stop (EV_A_ &w->timer);	2600	ev_timer_stop (EV_A_ &w->timer);
2067		2601
2068	ev_stop (EV_A_ (W)w);	2602	ev_stop (EV_A_ (W)w);
		2603
		2604	EV_FREQUENT_CHECK;
2069	}	2605	}
2070	#endif	2606	#endif
2071		2607
2072	#if EV_IDLE_ENABLE	2608	#if EV_IDLE_ENABLE
2073	void	2609	void
…		…
2075	{	2611	{
2076	if (expect_false (ev_is_active (w)))	2612	if (expect_false (ev_is_active (w)))
2077	return;	2613	return;
2078		2614
2079	pri_adjust (EV_A_ (W)w);	2615	pri_adjust (EV_A_ (W)w);
		2616
		2617	EV_FREQUENT_CHECK;
2080		2618
2081	{	2619	{
2082	int active = ++idlecnt [ABSPRI (w)];	2620	int active = ++idlecnt [ABSPRI (w)];
2083		2621
2084	++idleall;	2622	++idleall;
2085	ev_start (EV_A_ (W)w, active);	2623	ev_start (EV_A_ (W)w, active);
2086		2624
2087	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	2625	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2088	idles [ABSPRI (w)][active - 1] = w;	2626	idles [ABSPRI (w)][active - 1] = w;
2089	}	2627	}
		2628
		2629	EV_FREQUENT_CHECK;
2090	}	2630	}
2091		2631
2092	void	2632	void
2093	ev_idle_stop (EV_P_ ev_idle *w)	2633	ev_idle_stop (EV_P_ ev_idle *w)
2094	{	2634	{
2095	clear_pending (EV_A_ (W)w);	2635	clear_pending (EV_A_ (W)w);
2096	if (expect_false (!ev_is_active (w)))	2636	if (expect_false (!ev_is_active (w)))
2097	return;	2637	return;
2098		2638
		2639	EV_FREQUENT_CHECK;
		2640
2099	{	2641	{
2100	int active = ((W)w)->active;	2642	int active = ev_active (w);
2101		2643
2102	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	2644	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2103	((W)idles [ABSPRI (w)][active - 1])->active = active;	2645	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2104		2646
2105	ev_stop (EV_A_ (W)w);	2647	ev_stop (EV_A_ (W)w);
2106	--idleall;	2648	--idleall;
2107	}	2649	}
		2650
		2651	EV_FREQUENT_CHECK;
2108	}	2652	}
2109	#endif	2653	#endif
2110		2654
2111	void	2655	void
2112	ev_prepare_start (EV_P_ ev_prepare *w)	2656	ev_prepare_start (EV_P_ ev_prepare *w)
2113	{	2657	{
2114	if (expect_false (ev_is_active (w)))	2658	if (expect_false (ev_is_active (w)))
2115	return;	2659	return;
		2660
		2661	EV_FREQUENT_CHECK;
2116		2662
2117	ev_start (EV_A_ (W)w, ++preparecnt);	2663	ev_start (EV_A_ (W)w, ++preparecnt);
2118	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	2664	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2119	prepares [preparecnt - 1] = w;	2665	prepares [preparecnt - 1] = w;
		2666
		2667	EV_FREQUENT_CHECK;
2120	}	2668	}
2121		2669
2122	void	2670	void
2123	ev_prepare_stop (EV_P_ ev_prepare *w)	2671	ev_prepare_stop (EV_P_ ev_prepare *w)
2124	{	2672	{
2125	clear_pending (EV_A_ (W)w);	2673	clear_pending (EV_A_ (W)w);
2126	if (expect_false (!ev_is_active (w)))	2674	if (expect_false (!ev_is_active (w)))
2127	return;	2675	return;
2128		2676
		2677	EV_FREQUENT_CHECK;
		2678
2129	{	2679	{
2130	int active = ((W)w)->active;	2680	int active = ev_active (w);
		2681
2131	prepares [active - 1] = prepares [--preparecnt];	2682	prepares [active - 1] = prepares [--preparecnt];
2132	((W)prepares [active - 1])->active = active;	2683	ev_active (prepares [active - 1]) = active;
2133	}	2684	}
2134		2685
2135	ev_stop (EV_A_ (W)w);	2686	ev_stop (EV_A_ (W)w);
		2687
		2688	EV_FREQUENT_CHECK;
2136	}	2689	}
2137		2690
2138	void	2691	void
2139	ev_check_start (EV_P_ ev_check *w)	2692	ev_check_start (EV_P_ ev_check *w)
2140	{	2693	{
2141	if (expect_false (ev_is_active (w)))	2694	if (expect_false (ev_is_active (w)))
2142	return;	2695	return;
		2696
		2697	EV_FREQUENT_CHECK;
2143		2698
2144	ev_start (EV_A_ (W)w, ++checkcnt);	2699	ev_start (EV_A_ (W)w, ++checkcnt);
2145	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	2700	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2146	checks [checkcnt - 1] = w;	2701	checks [checkcnt - 1] = w;
		2702
		2703	EV_FREQUENT_CHECK;
2147	}	2704	}
2148		2705
2149	void	2706	void
2150	ev_check_stop (EV_P_ ev_check *w)	2707	ev_check_stop (EV_P_ ev_check *w)
2151	{	2708	{
2152	clear_pending (EV_A_ (W)w);	2709	clear_pending (EV_A_ (W)w);
2153	if (expect_false (!ev_is_active (w)))	2710	if (expect_false (!ev_is_active (w)))
2154	return;	2711	return;
2155		2712
		2713	EV_FREQUENT_CHECK;
		2714
2156	{	2715	{
2157	int active = ((W)w)->active;	2716	int active = ev_active (w);
		2717
2158	checks [active - 1] = checks [--checkcnt];	2718	checks [active - 1] = checks [--checkcnt];
2159	((W)checks [active - 1])->active = active;	2719	ev_active (checks [active - 1]) = active;
2160	}	2720	}
2161		2721
2162	ev_stop (EV_A_ (W)w);	2722	ev_stop (EV_A_ (W)w);
		2723
		2724	EV_FREQUENT_CHECK;
2163	}	2725	}
2164		2726
2165	#if EV_EMBED_ENABLE	2727	#if EV_EMBED_ENABLE
2166	void noinline	2728	void noinline
2167	ev_embed_sweep (EV_P_ ev_embed *w)	2729	ev_embed_sweep (EV_P_ ev_embed *w)
2168	{	2730	{
2169	ev_loop (w->loop, EVLOOP_NONBLOCK);	2731	ev_loop (w->other, EVLOOP_NONBLOCK);
2170	}	2732	}
2171		2733
2172	static void	2734	static void
2173	embed_cb (EV_P_ ev_io *io, int revents)	2735	embed_io_cb (EV_P_ ev_io *io, int revents)
2174	{	2736	{
2175	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2737	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2176		2738
2177	if (ev_cb (w))	2739	if (ev_cb (w))
2178	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2740	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2179	else	2741	else
2180	ev_embed_sweep (loop, w);	2742	ev_loop (w->other, EVLOOP_NONBLOCK);
2181	}	2743	}
		2744
		2745	static void
		2746	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2747	{
		2748	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2749
		2750	{
		2751	struct ev_loop *loop = w->other;
		2752
		2753	while (fdchangecnt)
		2754	{
		2755	fd_reify (EV_A);
		2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2757	}
		2758	}
		2759	}
		2760
		2761	#if 0
		2762	static void
		2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2764	{
		2765	ev_idle_stop (EV_A_ idle);
		2766	}
		2767	#endif
2182		2768
2183	void	2769	void
2184	ev_embed_start (EV_P_ ev_embed *w)	2770	ev_embed_start (EV_P_ ev_embed *w)
2185	{	2771	{
2186	if (expect_false (ev_is_active (w)))	2772	if (expect_false (ev_is_active (w)))
2187	return;	2773	return;
2188		2774
2189	{	2775	{
2190	struct ev_loop *loop = w->loop;	2776	struct ev_loop *loop = w->other;
2191	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2192	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2778	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2193	}	2779	}
		2780
		2781	EV_FREQUENT_CHECK;
2194		2782
2195	ev_set_priority (&w->io, ev_priority (w));	2783	ev_set_priority (&w->io, ev_priority (w));
2196	ev_io_start (EV_A_ &w->io);	2784	ev_io_start (EV_A_ &w->io);
2197		2785
		2786	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2787	ev_set_priority (&w->prepare, EV_MINPRI);
		2788	ev_prepare_start (EV_A_ &w->prepare);
		2789
		2790	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2791
2198	ev_start (EV_A_ (W)w, 1);	2792	ev_start (EV_A_ (W)w, 1);
		2793
		2794	EV_FREQUENT_CHECK;
2199	}	2795	}
2200		2796
2201	void	2797	void
2202	ev_embed_stop (EV_P_ ev_embed *w)	2798	ev_embed_stop (EV_P_ ev_embed *w)
2203	{	2799	{
2204	clear_pending (EV_A_ (W)w);	2800	clear_pending (EV_A_ (W)w);
2205	if (expect_false (!ev_is_active (w)))	2801	if (expect_false (!ev_is_active (w)))
2206	return;	2802	return;
2207		2803
		2804	EV_FREQUENT_CHECK;
		2805
2208	ev_io_stop (EV_A_ &w->io);	2806	ev_io_stop (EV_A_ &w->io);
		2807	ev_prepare_stop (EV_A_ &w->prepare);
2209		2808
2210	ev_stop (EV_A_ (W)w);	2809	ev_stop (EV_A_ (W)w);
		2810
		2811	EV_FREQUENT_CHECK;
2211	}	2812	}
2212	#endif	2813	#endif
2213		2814
2214	#if EV_FORK_ENABLE	2815	#if EV_FORK_ENABLE
2215	void	2816	void
2216	ev_fork_start (EV_P_ ev_fork *w)	2817	ev_fork_start (EV_P_ ev_fork *w)
2217	{	2818	{
2218	if (expect_false (ev_is_active (w)))	2819	if (expect_false (ev_is_active (w)))
2219	return;	2820	return;
		2821
		2822	EV_FREQUENT_CHECK;
2220		2823
2221	ev_start (EV_A_ (W)w, ++forkcnt);	2824	ev_start (EV_A_ (W)w, ++forkcnt);
2222	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	2825	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2223	forks [forkcnt - 1] = w;	2826	forks [forkcnt - 1] = w;
		2827
		2828	EV_FREQUENT_CHECK;
2224	}	2829	}
2225		2830
2226	void	2831	void
2227	ev_fork_stop (EV_P_ ev_fork *w)	2832	ev_fork_stop (EV_P_ ev_fork *w)
2228	{	2833	{
2229	clear_pending (EV_A_ (W)w);	2834	clear_pending (EV_A_ (W)w);
2230	if (expect_false (!ev_is_active (w)))	2835	if (expect_false (!ev_is_active (w)))
2231	return;	2836	return;
2232		2837
		2838	EV_FREQUENT_CHECK;
		2839
2233	{	2840	{
2234	int active = ((W)w)->active;	2841	int active = ev_active (w);
		2842
2235	forks [active - 1] = forks [--forkcnt];	2843	forks [active - 1] = forks [--forkcnt];
2236	((W)forks [active - 1])->active = active;	2844	ev_active (forks [active - 1]) = active;
2237	}	2845	}
2238		2846
2239	ev_stop (EV_A_ (W)w);	2847	ev_stop (EV_A_ (W)w);
		2848
		2849	EV_FREQUENT_CHECK;
		2850	}
		2851	#endif
		2852
		2853	#if EV_ASYNC_ENABLE
		2854	void
		2855	ev_async_start (EV_P_ ev_async *w)
		2856	{
		2857	if (expect_false (ev_is_active (w)))
		2858	return;
		2859
		2860	evpipe_init (EV_A);
		2861
		2862	EV_FREQUENT_CHECK;
		2863
		2864	ev_start (EV_A_ (W)w, ++asynccnt);
		2865	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2866	asyncs [asynccnt - 1] = w;
		2867
		2868	EV_FREQUENT_CHECK;
		2869	}
		2870
		2871	void
		2872	ev_async_stop (EV_P_ ev_async *w)
		2873	{
		2874	clear_pending (EV_A_ (W)w);
		2875	if (expect_false (!ev_is_active (w)))
		2876	return;
		2877
		2878	EV_FREQUENT_CHECK;
		2879
		2880	{
		2881	int active = ev_active (w);
		2882
		2883	asyncs [active - 1] = asyncs [--asynccnt];
		2884	ev_active (asyncs [active - 1]) = active;
		2885	}
		2886
		2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
		2890	}
		2891
		2892	void
		2893	ev_async_send (EV_P_ ev_async *w)
		2894	{
		2895	w->sent = 1;
		2896	evpipe_write (EV_A_ &gotasync);
2240	}	2897	}
2241	#endif	2898	#endif
2242		2899
2243	/*****************************************************************************/	2900	/*****************************************************************************/
2244		2901
…		…
2302	ev_timer_set (&once->to, timeout, 0.);	2959	ev_timer_set (&once->to, timeout, 0.);
2303	ev_timer_start (EV_A_ &once->to);	2960	ev_timer_start (EV_A_ &once->to);
2304	}	2961	}
2305	}	2962	}
2306		2963
		2964	#if EV_MULTIPLICITY
		2965	#include "ev_wrap.h"
		2966	#endif
		2967
2307	#ifdef __cplusplus	2968	#ifdef __cplusplus
2308	}	2969	}
2309	#endif	2970	#endif
2310		2971

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Comparing libev/ev.c (file contents): Revision 1.176 by root, Tue Dec 11 04:31:55 2007 UTC vs. Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.176 by root, Tue Dec 11 04:31:55 2007 UTC vs.
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC