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Comparing libev/ev.c (file contents):
Revision 1.168 by root, Sat Dec 8 14:12:07 2007 UTC vs.
Revision 1.228 by root, Fri May 2 08:07:37 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	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
196		241
197	#ifndef CLOCK_MONOTONIC	242	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	243	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	244	# define EV_USE_MONOTONIC 0
200	#endif	245	#endif
…		…
202	#ifndef CLOCK_REALTIME	247	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	248	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	249	# define EV_USE_REALTIME 0
205	#endif	250	#endif
206		251
		252	#if !EV_STAT_ENABLE
		253	# undef EV_USE_INOTIFY
		254	# define EV_USE_INOTIFY 0
		255	#endif
		256
		257	#if !EV_USE_NANOSLEEP
		258	# ifndef _WIN32
		259	# include <sys/select.h>
		260	# endif
		261	#endif
		262
		263	#if EV_USE_INOTIFY
		264	# include <sys/inotify.h>
		265	#endif
		266
207	#if EV_SELECT_IS_WINSOCKET	267	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	268	# include <winsock.h>
209	#endif	269	#endif
210		270
211	#if !EV_STAT_ENABLE	271	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	272	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		273	# include <stdint.h>
		274	# ifdef __cplusplus
		275	extern "C" {
213	#endif	276	# endif
214		277	int eventfd (unsigned int initval, int flags);
215	#if EV_USE_INOTIFY	278	# ifdef __cplusplus
216	# include <sys/inotify.h>	279	}
		280	# endif
217	#endif	281	#endif
218		282
219	/**/	283	/**/
		284
		285	/*
		286	* This is used to avoid floating point rounding problems.
		287	* It is added to ev_rt_now when scheduling periodics
		288	* to ensure progress, time-wise, even when rounding
		289	* errors are against us.
		290	* This value is good at least till the year 4000.
		291	* Better solutions welcome.
		292	*/
		293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		294
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	295	#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) */	296	#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 */	297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
224		298
225	#if __GNUC__ >= 3	299	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	300	# 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))	301	# 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	302	#else
236	# define expect(expr,value) (expr)	303	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	304	# define noinline
		305	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		306	# define inline
		307	# endif
240	#endif	308	#endif
241		309
242	#define expect_false(expr) expect ((expr) != 0, 0)	310	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	311	#define expect_true(expr) expect ((expr) != 0, 1)
		312	#define inline_size static inline
		313
		314	#if EV_MINIMAL
		315	# define inline_speed static noinline
		316	#else
		317	# define inline_speed static inline
		318	#endif
244		319
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	320	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		322
248	#define EMPTY /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
…		…
250		325
251	typedef ev_watcher *W;	326	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	327	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	328	typedef ev_watcher_time *WT;
254		329
		330	#define ev_at(w) ((WT)(w))->at
		331
		332	#if EV_USE_MONOTONIC
		333	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		334	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	335	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		336	#endif
256		337
257	#ifdef _WIN32	338	#ifdef _WIN32
258	# include "ev_win32.c"	339	# include "ev_win32.c"
259	#endif	340	#endif
260		341
…		…
281	perror (msg);	362	perror (msg);
282	abort ();	363	abort ();
283	}	364	}
284	}	365	}
285		366
		367	static void *
		368	ev_realloc_emul (void *ptr, long size)
		369	{
		370	/* some systems, notably openbsd and darwin, fail to properly
		371	* implement realloc (x, 0) (as required by both ansi c-98 and
		372	* the single unix specification, so work around them here.
		373	*/
		374
		375	if (size)
		376	return realloc (ptr, size);
		377
		378	free (ptr);
		379	return 0;
		380	}
		381
286	static void *(*alloc)(void *ptr, long size);	382	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287		383
288	void	384	void
289	ev_set_allocator (void *(*cb)(void *ptr, long size))	385	ev_set_allocator (void *(*cb)(void *ptr, long size))
290	{	386	{
291	alloc = cb;	387	alloc = cb;
292	}	388	}
293		389
294	inline_speed void *	390	inline_speed void *
295	ev_realloc (void *ptr, long size)	391	ev_realloc (void *ptr, long size)
296	{	392	{
297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	393	ptr = alloc (ptr, size);
298		394
299	if (!ptr && size)	395	if (!ptr && size)
300	{	396	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	397	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	398	abort ();
…		…
396	{	492	{
397	return ev_rt_now;	493	return ev_rt_now;
398	}	494	}
399	#endif	495	#endif
400		496
		497	void
		498	ev_sleep (ev_tstamp delay)
		499	{
		500	if (delay > 0.)
		501	{
		502	#if EV_USE_NANOSLEEP
		503	struct timespec ts;
		504
		505	ts.tv_sec = (time_t)delay;
		506	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		507
		508	nanosleep (&ts, 0);
		509	#elif defined(_WIN32)
		510	Sleep ((unsigned long)(delay * 1e3));
		511	#else
		512	struct timeval tv;
		513
		514	tv.tv_sec = (time_t)delay;
		515	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		516
		517	select (0, 0, 0, 0, &tv);
		518	#endif
		519	}
		520	}
		521
		522	/*****************************************************************************/
		523
401	int inline_size	524	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	525	array_nextsize (int elem, int cur, int cnt)
403	{	526	{
404	int ncur = cur + 1;	527	int ncur = cur + 1;
405		528
…		…
417	}	540	}
418		541
419	return ncur;	542	return ncur;
420	}	543	}
421		544
422	inline_speed void *	545	static noinline void *
423	array_realloc (int elem, void *base, int *cur, int cnt)	546	array_realloc (int elem, void *base, int *cur, int cnt)
424	{	547	{
425	*cur = array_nextsize (elem, *cur, cnt);	548	*cur = array_nextsize (elem, *cur, cnt);
426	return ev_realloc (base, elem * *cur);	549	return ev_realloc (base, elem * *cur);
427	}	550	}
…		…
452		575
453	void noinline	576	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	577	ev_feed_event (EV_P_ void *w, int revents)
455	{	578	{
456	W w_ = (W)w;	579	W w_ = (W)w;
		580	int pri = ABSPRI (w_);
457		581
458	if (expect_false (w_->pending))	582	if (expect_false (w_->pending))
		583	pendings [pri][w_->pending - 1].events |= revents;
		584	else
459	{	585	{
		586	w_->pending = ++pendingcnt [pri];
		587	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		588	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	589	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	590	}
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	}	591	}
469		592
470	void inline_size	593	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	594	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	595	{
473	int i;	596	int i;
474		597
475	for (i = 0; i < eventcnt; ++i)	598	for (i = 0; i < eventcnt; ++i)
…		…
522	{	645	{
523	int fd = fdchanges [i];	646	int fd = fdchanges [i];
524	ANFD *anfd = anfds + fd;	647	ANFD *anfd = anfds + fd;
525	ev_io *w;	648	ev_io *w;
526		649
527	int events = 0;	650	unsigned char events = 0;
528		651
529	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	652	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
530	events |= w->events;	653	events |= (unsigned char)w->events;
531		654
532	#if EV_SELECT_IS_WINSOCKET	655	#if EV_SELECT_IS_WINSOCKET
533	if (events)	656	if (events)
534	{	657	{
535	unsigned long argp;	658	unsigned long argp;
		659	#ifdef EV_FD_TO_WIN32_HANDLE
		660	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		661	#else
536	anfd->handle = _get_osfhandle (fd);	662	anfd->handle = _get_osfhandle (fd);
		663	#endif
537	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	664	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
538	}	665	}
539	#endif	666	#endif
540		667
		668	{
		669	unsigned char o_events = anfd->events;
		670	unsigned char o_reify = anfd->reify;
		671
541	anfd->reify = 0;	672	anfd->reify = 0;
542
543	backend_modify (EV_A_ fd, anfd->events, events);
544	anfd->events = events;	673	anfd->events = events;
		674
		675	if (o_events != events || o_reify & EV_IOFDSET)
		676	backend_modify (EV_A_ fd, o_events, events);
		677	}
545	}	678	}
546		679
547	fdchangecnt = 0;	680	fdchangecnt = 0;
548	}	681	}
549		682
550	void inline_size	683	void inline_size
551	fd_change (EV_P_ int fd)	684	fd_change (EV_P_ int fd, int flags)
552	{	685	{
553	if (expect_false (anfds [fd].reify))	686	unsigned char reify = anfds [fd].reify;
554	return;
555
556	anfds [fd].reify = 1;	687	anfds [fd].reify |= flags;
557		688
		689	if (expect_true (!reify))
		690	{
558	++fdchangecnt;	691	++fdchangecnt;
559	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	692	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
560	fdchanges [fdchangecnt - 1] = fd;	693	fdchanges [fdchangecnt - 1] = fd;
		694	}
561	}	695	}
562		696
563	void inline_speed	697	void inline_speed
564	fd_kill (EV_P_ int fd)	698	fd_kill (EV_P_ int fd)
565	{	699	{
…		…
616		750
617	for (fd = 0; fd < anfdmax; ++fd)	751	for (fd = 0; fd < anfdmax; ++fd)
618	if (anfds [fd].events)	752	if (anfds [fd].events)
619	{	753	{
620	anfds [fd].events = 0;	754	anfds [fd].events = 0;
621	fd_change (EV_A_ fd);	755	fd_change (EV_A_ fd, EV_IOFDSET | 1);
622	}	756	}
623	}	757	}
624		758
625	/*****************************************************************************/	759	/*****************************************************************************/
626		760
		761	/* towards the root */
627	void inline_speed	762	void inline_speed
628	upheap (WT *heap, int k)	763	upheap (WT *heap, int k)
629	{	764	{
630	WT w = heap [k];	765	WT w = heap [k];
631		766
632	while (k && heap [k >> 1]->at > w->at)	767	for (;;)
633	{	768	{
		769	int p = k >> 1;
		770
		771	/* maybe we could use a dummy element at heap [0]? */
		772	if (!p || heap [p]->at <= w->at)
		773	break;
		774
634	heap [k] = heap [k >> 1];	775	heap [k] = heap [p];
635	((W)heap [k])->active = k + 1;	776	((W)heap [k])->active = k;
636	k >>= 1;	777	k = p;
637	}	778	}
638		779
639	heap [k] = w;	780	heap [k] = w;
640	((W)heap [k])->active = k + 1;	781	((W)heap [k])->active = k;
641
642	}	782	}
643		783
		784	/* away from the root */
644	void inline_speed	785	void inline_speed
645	downheap (WT *heap, int N, int k)	786	downheap (WT *heap, int N, int k)
646	{	787	{
647	WT w = heap [k];	788	WT w = heap [k];
648		789
649	while (k < (N >> 1))	790	for (;;)
650	{	791	{
651	int j = k << 1;	792	int c = k << 1;
652		793
653	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	794	if (c > N)
654	++j;
655
656	if (w->at <= heap [j]->at)
657	break;	795	break;
658		796
		797	c += c < N && heap [c]->at > heap [c + 1]->at
		798	? 1 : 0;
		799
		800	if (w->at <= heap [c]->at)
		801	break;
		802
659	heap [k] = heap [j];	803	heap [k] = heap [c];
660	((W)heap [k])->active = k + 1;	804	((W)heap [k])->active = k;
		805
661	k = j;	806	k = c;
662	}	807	}
663		808
664	heap [k] = w;	809	heap [k] = w;
665	((W)heap [k])->active = k + 1;	810	((W)heap [k])->active = k;
666	}	811	}
667		812
668	void inline_size	813	void inline_size
669	adjustheap (WT *heap, int N, int k)	814	adjustheap (WT *heap, int N, int k)
670	{	815	{
…		…
675	/*****************************************************************************/	820	/*****************************************************************************/
676		821
677	typedef struct	822	typedef struct
678	{	823	{
679	WL head;	824	WL head;
680	sig_atomic_t volatile gotsig;	825	EV_ATOMIC_T gotsig;
681	} ANSIG;	826	} ANSIG;
682		827
683	static ANSIG *signals;	828	static ANSIG *signals;
684	static int signalmax;	829	static int signalmax;
685		830
686	static int sigpipe [2];	831	static EV_ATOMIC_T gotsig;
687	static sig_atomic_t volatile gotsig;
688	static ev_io sigev;
689		832
690	void inline_size	833	void inline_size
691	signals_init (ANSIG *base, int count)	834	signals_init (ANSIG *base, int count)
692	{	835	{
693	while (count--)	836	while (count--)
…		…
697		840
698	++base;	841	++base;
699	}	842	}
700	}	843	}
701		844
702	static void	845	/*****************************************************************************/
703	sighandler (int signum)
704	{
705	#if _WIN32
706	signal (signum, sighandler);
707	#endif
708		846
709	signals [signum - 1].gotsig = 1;
710
711	if (!gotsig)
712	{
713	int old_errno = errno;
714	gotsig = 1;
715	write (sigpipe [1], &signum, 1);
716	errno = old_errno;
717	}
718	}
719
720	void noinline
721	ev_feed_signal_event (EV_P_ int signum)
722	{
723	WL w;
724
725	#if EV_MULTIPLICITY
726	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
727	#endif
728
729	--signum;
730
731	if (signum < 0 || signum >= signalmax)
732	return;
733
734	signals [signum].gotsig = 0;
735
736	for (w = signals [signum].head; w; w = w->next)
737	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
738	}
739
740	static void
741	sigcb (EV_P_ ev_io *iow, int revents)
742	{
743	int signum;
744
745	read (sigpipe [0], &revents, 1);
746	gotsig = 0;
747
748	for (signum = signalmax; signum--; )
749	if (signals [signum].gotsig)
750	ev_feed_signal_event (EV_A_ signum + 1);
751	}
752
753	void inline_size	847	void inline_speed
754	fd_intern (int fd)	848	fd_intern (int fd)
755	{	849	{
756	#ifdef _WIN32	850	#ifdef _WIN32
757	int arg = 1;	851	int arg = 1;
758	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	852	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
761	fcntl (fd, F_SETFL, O_NONBLOCK);	855	fcntl (fd, F_SETFL, O_NONBLOCK);
762	#endif	856	#endif
763	}	857	}
764		858
765	static void noinline	859	static void noinline
766	siginit (EV_P)	860	evpipe_init (EV_P)
767	{	861	{
		862	if (!ev_is_active (&pipeev))
		863	{
		864	#if EV_USE_EVENTFD
		865	if ((evfd = eventfd (0, 0)) >= 0)
		866	{
		867	evpipe [0] = -1;
		868	fd_intern (evfd);
		869	ev_io_set (&pipeev, evfd, EV_READ);
		870	}
		871	else
		872	#endif
		873	{
		874	while (pipe (evpipe))
		875	syserr ("(libev) error creating signal/async pipe");
		876
768	fd_intern (sigpipe [0]);	877	fd_intern (evpipe [0]);
769	fd_intern (sigpipe [1]);	878	fd_intern (evpipe [1]);
		879	ev_io_set (&pipeev, evpipe [0], EV_READ);
		880	}
770		881
771	ev_io_set (&sigev, sigpipe [0], EV_READ);
772	ev_io_start (EV_A_ &sigev);	882	ev_io_start (EV_A_ &pipeev);
773	ev_unref (EV_A); /* child watcher should not keep loop alive */	883	ev_unref (EV_A); /* watcher should not keep loop alive */
		884	}
		885	}
		886
		887	void inline_size
		888	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		889	{
		890	if (!*flag)
		891	{
		892	int old_errno = errno; /* save errno because write might clobber it */
		893
		894	*flag = 1;
		895
		896	#if EV_USE_EVENTFD
		897	if (evfd >= 0)
		898	{
		899	uint64_t counter = 1;
		900	write (evfd, &counter, sizeof (uint64_t));
		901	}
		902	else
		903	#endif
		904	write (evpipe [1], &old_errno, 1);
		905
		906	errno = old_errno;
		907	}
		908	}
		909
		910	static void
		911	pipecb (EV_P_ ev_io *iow, int revents)
		912	{
		913	#if EV_USE_EVENTFD
		914	if (evfd >= 0)
		915	{
		916	uint64_t counter = 1;
		917	read (evfd, &counter, sizeof (uint64_t));
		918	}
		919	else
		920	#endif
		921	{
		922	char dummy;
		923	read (evpipe [0], &dummy, 1);
		924	}
		925
		926	if (gotsig && ev_is_default_loop (EV_A))
		927	{
		928	int signum;
		929	gotsig = 0;
		930
		931	for (signum = signalmax; signum--; )
		932	if (signals [signum].gotsig)
		933	ev_feed_signal_event (EV_A_ signum + 1);
		934	}
		935
		936	#if EV_ASYNC_ENABLE
		937	if (gotasync)
		938	{
		939	int i;
		940	gotasync = 0;
		941
		942	for (i = asynccnt; i--; )
		943	if (asyncs [i]->sent)
		944	{
		945	asyncs [i]->sent = 0;
		946	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		947	}
		948	}
		949	#endif
774	}	950	}
775		951
776	/*****************************************************************************/	952	/*****************************************************************************/
777		953
		954	static void
		955	ev_sighandler (int signum)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = &default_loop_struct;
		959	#endif
		960
		961	#if _WIN32
		962	signal (signum, ev_sighandler);
		963	#endif
		964
		965	signals [signum - 1].gotsig = 1;
		966	evpipe_write (EV_A_ &gotsig);
		967	}
		968
		969	void noinline
		970	ev_feed_signal_event (EV_P_ int signum)
		971	{
		972	WL w;
		973
		974	#if EV_MULTIPLICITY
		975	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		976	#endif
		977
		978	--signum;
		979
		980	if (signum < 0 || signum >= signalmax)
		981	return;
		982
		983	signals [signum].gotsig = 0;
		984
		985	for (w = signals [signum].head; w; w = w->next)
		986	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		987	}
		988
		989	/*****************************************************************************/
		990
778	static ev_child *childs [EV_PID_HASHSIZE];	991	static WL childs [EV_PID_HASHSIZE];
779		992
780	#ifndef _WIN32	993	#ifndef _WIN32
781		994
782	static ev_signal childev;	995	static ev_signal childev;
783		996
		997	#ifndef WIFCONTINUED
		998	# define WIFCONTINUED(status) 0
		999	#endif
		1000
784	void inline_speed	1001	void inline_speed
785	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1002	child_reap (EV_P_ int chain, int pid, int status)
786	{	1003	{
787	ev_child *w;	1004	ev_child *w;
		1005	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
788		1006
789	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1007	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1008	{
790	if (w->pid == pid || !w->pid)	1009	if ((w->pid == pid || !w->pid)
		1010	&& (!traced || (w->flags & 1)))
791	{	1011	{
792	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1012	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
793	w->rpid = pid;	1013	w->rpid = pid;
794	w->rstatus = status;	1014	w->rstatus = status;
795	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1015	ev_feed_event (EV_A_ (W)w, EV_CHILD);
796	}	1016	}
		1017	}
797	}	1018	}
798		1019
799	#ifndef WCONTINUED	1020	#ifndef WCONTINUED
800	# define WCONTINUED 0	1021	# define WCONTINUED 0
801	#endif	1022	#endif
…		…
810	if (!WCONTINUED	1031	if (!WCONTINUED
811	|| errno != EINVAL	1032	|| errno != EINVAL
812	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1033	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
813	return;	1034	return;
814		1035
815	/* make sure we are called again until all childs have been reaped */	1036	/* make sure we are called again until all children have been reaped */
816	/* we need to do it this way so that the callback gets called before we continue */	1037	/* we need to do it this way so that the callback gets called before we continue */
817	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1038	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
818		1039
819	child_reap (EV_A_ sw, pid, pid, status);	1040	child_reap (EV_A_ pid, pid, status);
820	if (EV_PID_HASHSIZE > 1)	1041	if (EV_PID_HASHSIZE > 1)
821	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1042	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
822	}	1043	}
823		1044
824	#endif	1045	#endif
825		1046
826	/*****************************************************************************/	1047	/*****************************************************************************/
…		…
898	}	1119	}
899		1120
900	unsigned int	1121	unsigned int
901	ev_embeddable_backends (void)	1122	ev_embeddable_backends (void)
902	{	1123	{
903	return EVBACKEND_EPOLL	1124	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
904	| EVBACKEND_KQUEUE	1125
905	| EVBACKEND_PORT;	1126	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1127	/* please fix it and tell me how to detect the fix */
		1128	flags &= ~EVBACKEND_EPOLL;
		1129
		1130	return flags;
906	}	1131	}
907		1132
908	unsigned int	1133	unsigned int
909	ev_backend (EV_P)	1134	ev_backend (EV_P)
910	{	1135	{
…		…
913		1138
914	unsigned int	1139	unsigned int
915	ev_loop_count (EV_P)	1140	ev_loop_count (EV_P)
916	{	1141	{
917	return loop_count;	1142	return loop_count;
		1143	}
		1144
		1145	void
		1146	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1147	{
		1148	io_blocktime = interval;
		1149	}
		1150
		1151	void
		1152	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1153	{
		1154	timeout_blocktime = interval;
918	}	1155	}
919		1156
920	static void noinline	1157	static void noinline
921	loop_init (EV_P_ unsigned int flags)	1158	loop_init (EV_P_ unsigned int flags)
922	{	1159	{
…		…
928	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1165	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
929	have_monotonic = 1;	1166	have_monotonic = 1;
930	}	1167	}
931	#endif	1168	#endif
932		1169
933	ev_rt_now = ev_time ();	1170	ev_rt_now = ev_time ();
934	mn_now = get_clock ();	1171	mn_now = get_clock ();
935	now_floor = mn_now;	1172	now_floor = mn_now;
936	rtmn_diff = ev_rt_now - mn_now;	1173	rtmn_diff = ev_rt_now - mn_now;
		1174
		1175	io_blocktime = 0.;
		1176	timeout_blocktime = 0.;
		1177	backend = 0;
		1178	backend_fd = -1;
		1179	gotasync = 0;
		1180	#if EV_USE_INOTIFY
		1181	fs_fd = -2;
		1182	#endif
937		1183
938	/* pid check not overridable via env */	1184	/* pid check not overridable via env */
939	#ifndef _WIN32	1185	#ifndef _WIN32
940	if (flags & EVFLAG_FORKCHECK)	1186	if (flags & EVFLAG_FORKCHECK)
941	curpid = getpid ();	1187	curpid = getpid ();
…		…
944	if (!(flags & EVFLAG_NOENV)	1190	if (!(flags & EVFLAG_NOENV)
945	&& !enable_secure ()	1191	&& !enable_secure ()
946	&& getenv ("LIBEV_FLAGS"))	1192	&& getenv ("LIBEV_FLAGS"))
947	flags = atoi (getenv ("LIBEV_FLAGS"));	1193	flags = atoi (getenv ("LIBEV_FLAGS"));
948		1194
949	if (!(flags & 0x0000ffffUL))	1195	if (!(flags & 0x0000ffffU))
950	flags |= ev_recommended_backends ();	1196	flags |= ev_recommended_backends ();
951
952	backend = 0;
953	backend_fd = -1;
954	#if EV_USE_INOTIFY
955	fs_fd = -2;
956	#endif
957		1197
958	#if EV_USE_PORT	1198	#if EV_USE_PORT
959	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1199	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
960	#endif	1200	#endif
961	#if EV_USE_KQUEUE	1201	#if EV_USE_KQUEUE
…		…
969	#endif	1209	#endif
970	#if EV_USE_SELECT	1210	#if EV_USE_SELECT
971	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1211	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
972	#endif	1212	#endif
973		1213
974	ev_init (&sigev, sigcb);	1214	ev_init (&pipeev, pipecb);
975	ev_set_priority (&sigev, EV_MAXPRI);	1215	ev_set_priority (&pipeev, EV_MAXPRI);
976	}	1216	}
977	}	1217	}
978		1218
979	static void noinline	1219	static void noinline
980	loop_destroy (EV_P)	1220	loop_destroy (EV_P)
981	{	1221	{
982	int i;	1222	int i;
		1223
		1224	if (ev_is_active (&pipeev))
		1225	{
		1226	ev_ref (EV_A); /* signal watcher */
		1227	ev_io_stop (EV_A_ &pipeev);
		1228
		1229	#if EV_USE_EVENTFD
		1230	if (evfd >= 0)
		1231	close (evfd);
		1232	#endif
		1233
		1234	if (evpipe [0] >= 0)
		1235	{
		1236	close (evpipe [0]);
		1237	close (evpipe [1]);
		1238	}
		1239	}
983		1240
984	#if EV_USE_INOTIFY	1241	#if EV_USE_INOTIFY
985	if (fs_fd >= 0)	1242	if (fs_fd >= 0)
986	close (fs_fd);	1243	close (fs_fd);
987	#endif	1244	#endif
…		…
1010	array_free (pending, [i]);	1267	array_free (pending, [i]);
1011	#if EV_IDLE_ENABLE	1268	#if EV_IDLE_ENABLE
1012	array_free (idle, [i]);	1269	array_free (idle, [i]);
1013	#endif	1270	#endif
1014	}	1271	}
		1272
		1273	ev_free (anfds); anfdmax = 0;
1015		1274
1016	/* have to use the microsoft-never-gets-it-right macro */	1275	/* have to use the microsoft-never-gets-it-right macro */
1017	array_free (fdchange, EMPTY);	1276	array_free (fdchange, EMPTY);
1018	array_free (timer, EMPTY);	1277	array_free (timer, EMPTY);
1019	#if EV_PERIODIC_ENABLE	1278	#if EV_PERIODIC_ENABLE
1020	array_free (periodic, EMPTY);	1279	array_free (periodic, EMPTY);
1021	#endif	1280	#endif
		1281	#if EV_FORK_ENABLE
		1282	array_free (fork, EMPTY);
		1283	#endif
1022	array_free (prepare, EMPTY);	1284	array_free (prepare, EMPTY);
1023	array_free (check, EMPTY);	1285	array_free (check, EMPTY);
		1286	#if EV_ASYNC_ENABLE
		1287	array_free (async, EMPTY);
		1288	#endif
1024		1289
1025	backend = 0;	1290	backend = 0;
1026	}	1291	}
1027		1292
		1293	#if EV_USE_INOTIFY
1028	void inline_size infy_fork (EV_P);	1294	void inline_size infy_fork (EV_P);
		1295	#endif
1029		1296
1030	void inline_size	1297	void inline_size
1031	loop_fork (EV_P)	1298	loop_fork (EV_P)
1032	{	1299	{
1033	#if EV_USE_PORT	1300	#if EV_USE_PORT
…		…
1041	#endif	1308	#endif
1042	#if EV_USE_INOTIFY	1309	#if EV_USE_INOTIFY
1043	infy_fork (EV_A);	1310	infy_fork (EV_A);
1044	#endif	1311	#endif
1045		1312
1046	if (ev_is_active (&sigev))	1313	if (ev_is_active (&pipeev))
1047	{	1314	{
1048	/* default loop */	1315	/* this "locks" the handlers against writing to the pipe */
		1316	/* while we modify the fd vars */
		1317	gotsig = 1;
		1318	#if EV_ASYNC_ENABLE
		1319	gotasync = 1;
		1320	#endif
1049		1321
1050	ev_ref (EV_A);	1322	ev_ref (EV_A);
1051	ev_io_stop (EV_A_ &sigev);	1323	ev_io_stop (EV_A_ &pipeev);
		1324
		1325	#if EV_USE_EVENTFD
		1326	if (evfd >= 0)
		1327	close (evfd);
		1328	#endif
		1329
		1330	if (evpipe [0] >= 0)
		1331	{
1052	close (sigpipe [0]);	1332	close (evpipe [0]);
1053	close (sigpipe [1]);	1333	close (evpipe [1]);
		1334	}
1054		1335
1055	while (pipe (sigpipe))
1056	syserr ("(libev) error creating pipe");
1057
1058	siginit (EV_A);	1336	evpipe_init (EV_A);
		1337	/* now iterate over everything, in case we missed something */
		1338	pipecb (EV_A_ &pipeev, EV_READ);
1059	}	1339	}
1060		1340
1061	postfork = 0;	1341	postfork = 0;
1062	}	1342	}
1063		1343
…		…
1085	}	1365	}
1086		1366
1087	void	1367	void
1088	ev_loop_fork (EV_P)	1368	ev_loop_fork (EV_P)
1089	{	1369	{
1090	postfork = 1;	1370	postfork = 1; /* must be in line with ev_default_fork */
1091	}	1371	}
1092		1372
1093	#endif	1373	#endif
1094		1374
1095	#if EV_MULTIPLICITY	1375	#if EV_MULTIPLICITY
…		…
1098	#else	1378	#else
1099	int	1379	int
1100	ev_default_loop (unsigned int flags)	1380	ev_default_loop (unsigned int flags)
1101	#endif	1381	#endif
1102	{	1382	{
1103	if (sigpipe [0] == sigpipe [1])
1104	if (pipe (sigpipe))
1105	return 0;
1106
1107	if (!ev_default_loop_ptr)	1383	if (!ev_default_loop_ptr)
1108	{	1384	{
1109	#if EV_MULTIPLICITY	1385	#if EV_MULTIPLICITY
1110	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1386	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1111	#else	1387	#else
…		…
1114		1390
1115	loop_init (EV_A_ flags);	1391	loop_init (EV_A_ flags);
1116		1392
1117	if (ev_backend (EV_A))	1393	if (ev_backend (EV_A))
1118	{	1394	{
1119	siginit (EV_A);
1120
1121	#ifndef _WIN32	1395	#ifndef _WIN32
1122	ev_signal_init (&childev, childcb, SIGCHLD);	1396	ev_signal_init (&childev, childcb, SIGCHLD);
1123	ev_set_priority (&childev, EV_MAXPRI);	1397	ev_set_priority (&childev, EV_MAXPRI);
1124	ev_signal_start (EV_A_ &childev);	1398	ev_signal_start (EV_A_ &childev);
1125	ev_unref (EV_A); /* child watcher should not keep loop alive */	1399	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1142	#ifndef _WIN32	1416	#ifndef _WIN32
1143	ev_ref (EV_A); /* child watcher */	1417	ev_ref (EV_A); /* child watcher */
1144	ev_signal_stop (EV_A_ &childev);	1418	ev_signal_stop (EV_A_ &childev);
1145	#endif	1419	#endif
1146		1420
1147	ev_ref (EV_A); /* signal watcher */
1148	ev_io_stop (EV_A_ &sigev);
1149
1150	close (sigpipe [0]); sigpipe [0] = 0;
1151	close (sigpipe [1]); sigpipe [1] = 0;
1152
1153	loop_destroy (EV_A);	1421	loop_destroy (EV_A);
1154	}	1422	}
1155		1423
1156	void	1424	void
1157	ev_default_fork (void)	1425	ev_default_fork (void)
…		…
1159	#if EV_MULTIPLICITY	1427	#if EV_MULTIPLICITY
1160	struct ev_loop *loop = ev_default_loop_ptr;	1428	struct ev_loop *loop = ev_default_loop_ptr;
1161	#endif	1429	#endif
1162		1430
1163	if (backend)	1431	if (backend)
1164	postfork = 1;	1432	postfork = 1; /* must be in line with ev_loop_fork */
1165	}	1433	}
1166		1434
1167	/*****************************************************************************/	1435	/*****************************************************************************/
1168		1436
1169	void	1437	void
…		…
1193	}	1461	}
1194		1462
1195	void inline_size	1463	void inline_size
1196	timers_reify (EV_P)	1464	timers_reify (EV_P)
1197	{	1465	{
1198	while (timercnt && ((WT)timers [0])->at <= mn_now)	1466	while (timercnt && ev_at (timers [1]) <= mn_now)
1199	{	1467	{
1200	ev_timer *w = timers [0];	1468	ev_timer *w = (ev_timer *)timers [1];
1201		1469
1202	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/	1470	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1203		1471
1204	/* first reschedule or stop timer */	1472	/* first reschedule or stop timer */
1205	if (w->repeat)	1473	if (w->repeat)
1206	{	1474	{
1207	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1475	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1208		1476
1209	((WT)w)->at += w->repeat;	1477	ev_at (w) += w->repeat;
1210	if (((WT)w)->at < mn_now)	1478	if (ev_at (w) < mn_now)
1211	((WT)w)->at = mn_now;	1479	ev_at (w) = mn_now;
1212		1480
1213	downheap ((WT *)timers, timercnt, 0);	1481	downheap (timers, timercnt, 1);
1214	}	1482	}
1215	else	1483	else
1216	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1484	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1217		1485
1218	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1486	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1221		1489
1222	#if EV_PERIODIC_ENABLE	1490	#if EV_PERIODIC_ENABLE
1223	void inline_size	1491	void inline_size
1224	periodics_reify (EV_P)	1492	periodics_reify (EV_P)
1225	{	1493	{
1226	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1494	while (periodiccnt && ev_at (periodics [1]) <= ev_rt_now)
1227	{	1495	{
1228	ev_periodic *w = periodics [0];	1496	ev_periodic *w = (ev_periodic *)periodics [1];
1229		1497
1230	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1498	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1231		1499
1232	/* first reschedule or stop timer */	1500	/* first reschedule or stop timer */
1233	if (w->reschedule_cb)	1501	if (w->reschedule_cb)
1234	{	1502	{
1235	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1503	ev_at (w) = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1236	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1504	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) > ev_rt_now));
1237	downheap ((WT *)periodics, periodiccnt, 0);	1505	downheap (periodics, periodiccnt, 1);
1238	}	1506	}
1239	else if (w->interval)	1507	else if (w->interval)
1240	{	1508	{
1241	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1509	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1510	if (ev_at (w) - ev_rt_now <= TIME_EPSILON) ev_at (w) += w->interval;
1242	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1511	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ev_at (w) > ev_rt_now));
1243	downheap ((WT *)periodics, periodiccnt, 0);	1512	downheap (periodics, periodiccnt, 1);
1244	}	1513	}
1245	else	1514	else
1246	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1515	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1247		1516
1248	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1517	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1255	int i;	1524	int i;
1256		1525
1257	/* adjust periodics after time jump */	1526	/* adjust periodics after time jump */
1258	for (i = 0; i < periodiccnt; ++i)	1527	for (i = 0; i < periodiccnt; ++i)
1259	{	1528	{
1260	ev_periodic *w = periodics [i];	1529	ev_periodic *w = (ev_periodic *)periodics [i];
1261		1530
1262	if (w->reschedule_cb)	1531	if (w->reschedule_cb)
1263	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1532	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1264	else if (w->interval)	1533	else if (w->interval)
1265	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1534	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1266	}	1535	}
1267		1536
1268	/* now rebuild the heap */	1537	/* now rebuild the heap */
1269	for (i = periodiccnt >> 1; i--; )	1538	for (i = periodiccnt >> 1; i--; )
1270	downheap ((WT *)periodics, periodiccnt, i);	1539	downheap (periodics, periodiccnt, i);
1271	}	1540	}
1272	#endif	1541	#endif
1273		1542
1274	#if EV_IDLE_ENABLE	1543	#if EV_IDLE_ENABLE
1275	void inline_size	1544	void inline_size
…		…
1292	}	1561	}
1293	}	1562	}
1294	}	1563	}
1295	#endif	1564	#endif
1296		1565
1297	int inline_size	1566	void inline_speed
1298	time_update_monotonic (EV_P)	1567	time_update (EV_P_ ev_tstamp max_block)
1299	{	1568	{
		1569	int i;
		1570
		1571	#if EV_USE_MONOTONIC
		1572	if (expect_true (have_monotonic))
		1573	{
		1574	ev_tstamp odiff = rtmn_diff;
		1575
1300	mn_now = get_clock ();	1576	mn_now = get_clock ();
1301		1577
		1578	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1579	/* interpolate in the meantime */
1302	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1580	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1303	{	1581	{
1304	ev_rt_now = rtmn_diff + mn_now;	1582	ev_rt_now = rtmn_diff + mn_now;
1305	return 0;	1583	return;
1306	}	1584	}
1307	else	1585
1308	{
1309	now_floor = mn_now;	1586	now_floor = mn_now;
1310	ev_rt_now = ev_time ();	1587	ev_rt_now = ev_time ();
1311	return 1;
1312	}
1313	}
1314		1588
1315	void inline_size	1589	/* loop a few times, before making important decisions.
1316	time_update (EV_P)	1590	* on the choice of "4": one iteration isn't enough,
1317	{	1591	* in case we get preempted during the calls to
1318	int i;	1592	* ev_time and get_clock. a second call is almost guaranteed
1319		1593	* to succeed in that case, though. and looping a few more times
1320	#if EV_USE_MONOTONIC	1594	* doesn't hurt either as we only do this on time-jumps or
1321	if (expect_true (have_monotonic))	1595	* in the unlikely event of having been preempted here.
1322	{	1596	*/
1323	if (time_update_monotonic (EV_A))	1597	for (i = 4; --i; )
1324	{	1598	{
1325	ev_tstamp odiff = rtmn_diff;
1326
1327	/* loop a few times, before making important decisions.
1328	* on the choice of "4": one iteration isn't enough,
1329	* in case we get preempted during the calls to
1330	* ev_time and get_clock. a second call is almost guaranteed
1331	* to succeed in that case, though. and looping a few more times
1332	* doesn't hurt either as we only do this on time-jumps or
1333	* in the unlikely event of having been preempted here.
1334	*/
1335	for (i = 4; --i; )
1336	{
1337	rtmn_diff = ev_rt_now - mn_now;	1599	rtmn_diff = ev_rt_now - mn_now;
1338		1600
1339	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1601	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1340	return; /* all is well */	1602	return; /* all is well */
1341		1603
1342	ev_rt_now = ev_time ();	1604	ev_rt_now = ev_time ();
1343	mn_now = get_clock ();	1605	mn_now = get_clock ();
1344	now_floor = mn_now;	1606	now_floor = mn_now;
1345	}	1607	}
1346		1608
1347	# if EV_PERIODIC_ENABLE	1609	# if EV_PERIODIC_ENABLE
1348	periodics_reschedule (EV_A);	1610	periodics_reschedule (EV_A);
1349	# endif	1611	# endif
1350	/* no timer adjustment, as the monotonic clock doesn't jump */	1612	/* no timer adjustment, as the monotonic clock doesn't jump */
1351	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1613	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1352	}
1353	}	1614	}
1354	else	1615	else
1355	#endif	1616	#endif
1356	{	1617	{
1357	ev_rt_now = ev_time ();	1618	ev_rt_now = ev_time ();
1358		1619
1359	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1620	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1360	{	1621	{
1361	#if EV_PERIODIC_ENABLE	1622	#if EV_PERIODIC_ENABLE
1362	periodics_reschedule (EV_A);	1623	periodics_reschedule (EV_A);
1363	#endif	1624	#endif
1364
1365	/* adjust timers. this is easy, as the offset is the same for all of them */	1625	/* adjust timers. this is easy, as the offset is the same for all of them */
1366	for (i = 0; i < timercnt; ++i)	1626	for (i = 1; i <= timercnt; ++i)
1367	((WT)timers [i])->at += ev_rt_now - mn_now;	1627	ev_at (timers [i]) += ev_rt_now - mn_now;
1368	}	1628	}
1369		1629
1370	mn_now = ev_rt_now;	1630	mn_now = ev_rt_now;
1371	}	1631	}
1372	}	1632	}
…		…
1386	static int loop_done;	1646	static int loop_done;
1387		1647
1388	void	1648	void
1389	ev_loop (EV_P_ int flags)	1649	ev_loop (EV_P_ int flags)
1390	{	1650	{
1391	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1651	loop_done = EVUNLOOP_CANCEL;
1392	? EVUNLOOP_ONE
1393	: EVUNLOOP_CANCEL;
1394		1652
1395	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1653	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1396		1654
1397	do	1655	do
1398	{	1656	{
…		…
1413	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1671	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1414	call_pending (EV_A);	1672	call_pending (EV_A);
1415	}	1673	}
1416	#endif	1674	#endif
1417		1675
1418	/* queue check watchers (and execute them) */	1676	/* queue prepare watchers (and execute them) */
1419	if (expect_false (preparecnt))	1677	if (expect_false (preparecnt))
1420	{	1678	{
1421	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1679	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1422	call_pending (EV_A);	1680	call_pending (EV_A);
1423	}	1681	}
…		…
1432	/* update fd-related kernel structures */	1690	/* update fd-related kernel structures */
1433	fd_reify (EV_A);	1691	fd_reify (EV_A);
1434		1692
1435	/* calculate blocking time */	1693	/* calculate blocking time */
1436	{	1694	{
1437	ev_tstamp block;	1695	ev_tstamp waittime = 0.;
		1696	ev_tstamp sleeptime = 0.;
1438		1697
1439	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1698	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1440	block = 0.; /* do not block at all */
1441	else
1442	{	1699	{
1443	/* update time to cancel out callback processing overhead */	1700	/* update time to cancel out callback processing overhead */
1444	#if EV_USE_MONOTONIC
1445	if (expect_true (have_monotonic))
1446	time_update_monotonic (EV_A);	1701	time_update (EV_A_ 1e100);
1447	else
1448	#endif
1449	{
1450	ev_rt_now = ev_time ();
1451	mn_now = ev_rt_now;
1452	}
1453		1702
1454	block = MAX_BLOCKTIME;	1703	waittime = MAX_BLOCKTIME;
1455		1704
1456	if (timercnt)	1705	if (timercnt)
1457	{	1706	{
1458	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1707	ev_tstamp to = ev_at (timers [1]) - mn_now + backend_fudge;
1459	if (block > to) block = to;	1708	if (waittime > to) waittime = to;
1460	}	1709	}
1461		1710
1462	#if EV_PERIODIC_ENABLE	1711	#if EV_PERIODIC_ENABLE
1463	if (periodiccnt)	1712	if (periodiccnt)
1464	{	1713	{
1465	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1714	ev_tstamp to = ev_at (periodics [1]) - ev_rt_now + backend_fudge;
1466	if (block > to) block = to;	1715	if (waittime > to) waittime = to;
1467	}	1716	}
1468	#endif	1717	#endif
1469		1718
1470	if (expect_false (block < 0.)) block = 0.;	1719	if (expect_false (waittime < timeout_blocktime))
		1720	waittime = timeout_blocktime;
		1721
		1722	sleeptime = waittime - backend_fudge;
		1723
		1724	if (expect_true (sleeptime > io_blocktime))
		1725	sleeptime = io_blocktime;
		1726
		1727	if (sleeptime)
		1728	{
		1729	ev_sleep (sleeptime);
		1730	waittime -= sleeptime;
		1731	}
1471	}	1732	}
1472		1733
1473	++loop_count;	1734	++loop_count;
1474	backend_poll (EV_A_ block);	1735	backend_poll (EV_A_ waittime);
		1736
		1737	/* update ev_rt_now, do magic */
		1738	time_update (EV_A_ waittime + sleeptime);
1475	}	1739	}
1476
1477	/* update ev_rt_now, do magic */
1478	time_update (EV_A);
1479		1740
1480	/* queue pending timers and reschedule them */	1741	/* queue pending timers and reschedule them */
1481	timers_reify (EV_A); /* relative timers called last */	1742	timers_reify (EV_A); /* relative timers called last */
1482	#if EV_PERIODIC_ENABLE	1743	#if EV_PERIODIC_ENABLE
1483	periodics_reify (EV_A); /* absolute timers called first */	1744	periodics_reify (EV_A); /* absolute timers called first */
…		…
1491	/* queue check watchers, to be executed first */	1752	/* queue check watchers, to be executed first */
1492	if (expect_false (checkcnt))	1753	if (expect_false (checkcnt))
1493	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1754	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1494		1755
1495	call_pending (EV_A);	1756	call_pending (EV_A);
1496
1497	}	1757	}
1498	while (expect_true (activecnt && !loop_done));	1758	while (expect_true (
		1759	activecnt
		1760	&& !loop_done
		1761	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1762	));
1499		1763
1500	if (loop_done == EVUNLOOP_ONE)	1764	if (loop_done == EVUNLOOP_ONE)
1501	loop_done = EVUNLOOP_CANCEL;	1765	loop_done = EVUNLOOP_CANCEL;
1502	}	1766	}
1503		1767
…		…
1545	ev_clear_pending (EV_P_ void *w)	1809	ev_clear_pending (EV_P_ void *w)
1546	{	1810	{
1547	W w_ = (W)w;	1811	W w_ = (W)w;
1548	int pending = w_->pending;	1812	int pending = w_->pending;
1549		1813
1550	if (!pending)	1814	if (expect_true (pending))
		1815	{
		1816	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1817	w_->pending = 0;
		1818	p->w = 0;
		1819	return p->events;
		1820	}
		1821	else
1551	return 0;	1822	return 0;
1552
1553	w_->pending = 0;
1554	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
1555	p->w = 0;
1556
1557	return p->events;
1558	}	1823	}
1559		1824
1560	void inline_size	1825	void inline_size
1561	pri_adjust (EV_P_ W w)	1826	pri_adjust (EV_P_ W w)
1562	{	1827	{
…		…
1581	w->active = 0;	1846	w->active = 0;
1582	}	1847	}
1583		1848
1584	/*****************************************************************************/	1849	/*****************************************************************************/
1585		1850
1586	void	1851	void noinline
1587	ev_io_start (EV_P_ ev_io *w)	1852	ev_io_start (EV_P_ ev_io *w)
1588	{	1853	{
1589	int fd = w->fd;	1854	int fd = w->fd;
1590		1855
1591	if (expect_false (ev_is_active (w)))	1856	if (expect_false (ev_is_active (w)))
…		…
1593		1858
1594	assert (("ev_io_start called with negative fd", fd >= 0));	1859	assert (("ev_io_start called with negative fd", fd >= 0));
1595		1860
1596	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1597	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1862	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1598	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1863	wlist_add (&anfds[fd].head, (WL)w);
1599		1864
1600	fd_change (EV_A_ fd);	1865	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1866	w->events &= ~EV_IOFDSET;
1601	}	1867	}
1602		1868
1603	void	1869	void noinline
1604	ev_io_stop (EV_P_ ev_io *w)	1870	ev_io_stop (EV_P_ ev_io *w)
1605	{	1871	{
1606	clear_pending (EV_A_ (W)w);	1872	clear_pending (EV_A_ (W)w);
1607	if (expect_false (!ev_is_active (w)))	1873	if (expect_false (!ev_is_active (w)))
1608	return;	1874	return;
1609		1875
1610	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1876	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1611		1877
1612	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1878	wlist_del (&anfds[w->fd].head, (WL)w);
1613	ev_stop (EV_A_ (W)w);	1879	ev_stop (EV_A_ (W)w);
1614		1880
1615	fd_change (EV_A_ w->fd);	1881	fd_change (EV_A_ w->fd, 1);
1616	}	1882	}
1617		1883
1618	void	1884	void noinline
1619	ev_timer_start (EV_P_ ev_timer *w)	1885	ev_timer_start (EV_P_ ev_timer *w)
1620	{	1886	{
1621	if (expect_false (ev_is_active (w)))	1887	if (expect_false (ev_is_active (w)))
1622	return;	1888	return;
1623		1889
1624	((WT)w)->at += mn_now;	1890	ev_at (w) += mn_now;
1625		1891
1626	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1892	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1627		1893
1628	ev_start (EV_A_ (W)w, ++timercnt);	1894	ev_start (EV_A_ (W)w, ++timercnt);
1629	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1895	array_needsize (WT, timers, timermax, timercnt + 1, EMPTY2);
1630	timers [timercnt - 1] = w;	1896	timers [timercnt] = (WT)w;
1631	upheap ((WT *)timers, timercnt - 1);	1897	upheap (timers, timercnt);
1632		1898
1633	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	1899	/*assert (("internal timer heap corruption", timers [((W)w)->active] == w));*/
1634	}	1900	}
1635		1901
1636	void	1902	void noinline
1637	ev_timer_stop (EV_P_ ev_timer *w)	1903	ev_timer_stop (EV_P_ ev_timer *w)
1638	{	1904	{
1639	clear_pending (EV_A_ (W)w);	1905	clear_pending (EV_A_ (W)w);
1640	if (expect_false (!ev_is_active (w)))	1906	if (expect_false (!ev_is_active (w)))
1641	return;	1907	return;
1642		1908
1643	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1909	assert (("internal timer heap corruption", timers [((W)w)->active] == (WT)w));
1644		1910
1645	{	1911	{
1646	int active = ((W)w)->active;	1912	int active = ((W)w)->active;
1647		1913
1648	if (expect_true (--active < --timercnt))	1914	if (expect_true (active < timercnt))
1649	{	1915	{
1650	timers [active] = timers [timercnt];	1916	timers [active] = timers [timercnt];
1651	adjustheap ((WT *)timers, timercnt, active);	1917	adjustheap (timers, timercnt, active);
1652	}	1918	}
		1919
		1920	--timercnt;
1653	}	1921	}
1654		1922
1655	((WT)w)->at -= mn_now;	1923	ev_at (w) -= mn_now;
1656		1924
1657	ev_stop (EV_A_ (W)w);	1925	ev_stop (EV_A_ (W)w);
1658	}	1926	}
1659		1927
1660	void	1928	void noinline
1661	ev_timer_again (EV_P_ ev_timer *w)	1929	ev_timer_again (EV_P_ ev_timer *w)
1662	{	1930	{
1663	if (ev_is_active (w))	1931	if (ev_is_active (w))
1664	{	1932	{
1665	if (w->repeat)	1933	if (w->repeat)
1666	{	1934	{
1667	((WT)w)->at = mn_now + w->repeat;	1935	ev_at (w) = mn_now + w->repeat;
1668	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1936	adjustheap (timers, timercnt, ((W)w)->active);
1669	}	1937	}
1670	else	1938	else
1671	ev_timer_stop (EV_A_ w);	1939	ev_timer_stop (EV_A_ w);
1672	}	1940	}
1673	else if (w->repeat)	1941	else if (w->repeat)
…		…
1676	ev_timer_start (EV_A_ w);	1944	ev_timer_start (EV_A_ w);
1677	}	1945	}
1678	}	1946	}
1679		1947
1680	#if EV_PERIODIC_ENABLE	1948	#if EV_PERIODIC_ENABLE
1681	void	1949	void noinline
1682	ev_periodic_start (EV_P_ ev_periodic *w)	1950	ev_periodic_start (EV_P_ ev_periodic *w)
1683	{	1951	{
1684	if (expect_false (ev_is_active (w)))	1952	if (expect_false (ev_is_active (w)))
1685	return;	1953	return;
1686		1954
1687	if (w->reschedule_cb)	1955	if (w->reschedule_cb)
1688	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1956	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1689	else if (w->interval)	1957	else if (w->interval)
1690	{	1958	{
1691	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1959	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1692	/* this formula differs from the one in periodic_reify because we do not always round up */	1960	/* this formula differs from the one in periodic_reify because we do not always round up */
1693	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1961	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1694	}	1962	}
		1963	else
		1964	ev_at (w) = w->offset;
1695		1965
1696	ev_start (EV_A_ (W)w, ++periodiccnt);	1966	ev_start (EV_A_ (W)w, ++periodiccnt);
1697	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1967	array_needsize (WT, periodics, periodicmax, periodiccnt + 1, EMPTY2);
1698	periodics [periodiccnt - 1] = w;	1968	periodics [periodiccnt] = (WT)w;
1699	upheap ((WT *)periodics, periodiccnt - 1);	1969	upheap (periodics, periodiccnt);
1700		1970
1701	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	1971	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1702	}	1972	}
1703		1973
1704	void	1974	void noinline
1705	ev_periodic_stop (EV_P_ ev_periodic *w)	1975	ev_periodic_stop (EV_P_ ev_periodic *w)
1706	{	1976	{
1707	clear_pending (EV_A_ (W)w);	1977	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	1978	if (expect_false (!ev_is_active (w)))
1709	return;	1979	return;
1710		1980
1711	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1981	assert (("internal periodic heap corruption", periodics [((W)w)->active] == (WT)w));
1712		1982
1713	{	1983	{
1714	int active = ((W)w)->active;	1984	int active = ((W)w)->active;
1715		1985
1716	if (expect_true (--active < --periodiccnt))	1986	if (expect_true (active < periodiccnt))
1717	{	1987	{
1718	periodics [active] = periodics [periodiccnt];	1988	periodics [active] = periodics [periodiccnt];
1719	adjustheap ((WT *)periodics, periodiccnt, active);	1989	adjustheap (periodics, periodiccnt, active);
1720	}	1990	}
		1991
		1992	--periodiccnt;
1721	}	1993	}
1722		1994
1723	ev_stop (EV_A_ (W)w);	1995	ev_stop (EV_A_ (W)w);
1724	}	1996	}
1725		1997
1726	void	1998	void noinline
1727	ev_periodic_again (EV_P_ ev_periodic *w)	1999	ev_periodic_again (EV_P_ ev_periodic *w)
1728	{	2000	{
1729	/* TODO: use adjustheap and recalculation */	2001	/* TODO: use adjustheap and recalculation */
1730	ev_periodic_stop (EV_A_ w);	2002	ev_periodic_stop (EV_A_ w);
1731	ev_periodic_start (EV_A_ w);	2003	ev_periodic_start (EV_A_ w);
…		…
1734		2006
1735	#ifndef SA_RESTART	2007	#ifndef SA_RESTART
1736	# define SA_RESTART 0	2008	# define SA_RESTART 0
1737	#endif	2009	#endif
1738		2010
1739	void	2011	void noinline
1740	ev_signal_start (EV_P_ ev_signal *w)	2012	ev_signal_start (EV_P_ ev_signal *w)
1741	{	2013	{
1742	#if EV_MULTIPLICITY	2014	#if EV_MULTIPLICITY
1743	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2015	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1744	#endif	2016	#endif
1745	if (expect_false (ev_is_active (w)))	2017	if (expect_false (ev_is_active (w)))
1746	return;	2018	return;
1747		2019
1748	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2020	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1749		2021
		2022	evpipe_init (EV_A);
		2023
		2024	{
		2025	#ifndef _WIN32
		2026	sigset_t full, prev;
		2027	sigfillset (&full);
		2028	sigprocmask (SIG_SETMASK, &full, &prev);
		2029	#endif
		2030
		2031	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2032
		2033	#ifndef _WIN32
		2034	sigprocmask (SIG_SETMASK, &prev, 0);
		2035	#endif
		2036	}
		2037
1750	ev_start (EV_A_ (W)w, 1);	2038	ev_start (EV_A_ (W)w, 1);
1751	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1752	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2039	wlist_add (&signals [w->signum - 1].head, (WL)w);
1753		2040
1754	if (!((WL)w)->next)	2041	if (!((WL)w)->next)
1755	{	2042	{
1756	#if _WIN32	2043	#if _WIN32
1757	signal (w->signum, sighandler);	2044	signal (w->signum, ev_sighandler);
1758	#else	2045	#else
1759	struct sigaction sa;	2046	struct sigaction sa;
1760	sa.sa_handler = sighandler;	2047	sa.sa_handler = ev_sighandler;
1761	sigfillset (&sa.sa_mask);	2048	sigfillset (&sa.sa_mask);
1762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2049	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1763	sigaction (w->signum, &sa, 0);	2050	sigaction (w->signum, &sa, 0);
1764	#endif	2051	#endif
1765	}	2052	}
1766	}	2053	}
1767		2054
1768	void	2055	void noinline
1769	ev_signal_stop (EV_P_ ev_signal *w)	2056	ev_signal_stop (EV_P_ ev_signal *w)
1770	{	2057	{
1771	clear_pending (EV_A_ (W)w);	2058	clear_pending (EV_A_ (W)w);
1772	if (expect_false (!ev_is_active (w)))	2059	if (expect_false (!ev_is_active (w)))
1773	return;	2060	return;
1774		2061
1775	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2062	wlist_del (&signals [w->signum - 1].head, (WL)w);
1776	ev_stop (EV_A_ (W)w);	2063	ev_stop (EV_A_ (W)w);
1777		2064
1778	if (!signals [w->signum - 1].head)	2065	if (!signals [w->signum - 1].head)
1779	signal (w->signum, SIG_DFL);	2066	signal (w->signum, SIG_DFL);
1780	}	2067	}
…		…
1787	#endif	2074	#endif
1788	if (expect_false (ev_is_active (w)))	2075	if (expect_false (ev_is_active (w)))
1789	return;	2076	return;
1790		2077
1791	ev_start (EV_A_ (W)w, 1);	2078	ev_start (EV_A_ (W)w, 1);
1792	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2079	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1793	}	2080	}
1794		2081
1795	void	2082	void
1796	ev_child_stop (EV_P_ ev_child *w)	2083	ev_child_stop (EV_P_ ev_child *w)
1797	{	2084	{
1798	clear_pending (EV_A_ (W)w);	2085	clear_pending (EV_A_ (W)w);
1799	if (expect_false (!ev_is_active (w)))	2086	if (expect_false (!ev_is_active (w)))
1800	return;	2087	return;
1801		2088
1802	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2089	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1803	ev_stop (EV_A_ (W)w);	2090	ev_stop (EV_A_ (W)w);
1804	}	2091	}
1805		2092
1806	#if EV_STAT_ENABLE	2093	#if EV_STAT_ENABLE
1807		2094
…		…
2149		2436
2150	#if EV_EMBED_ENABLE	2437	#if EV_EMBED_ENABLE
2151	void noinline	2438	void noinline
2152	ev_embed_sweep (EV_P_ ev_embed *w)	2439	ev_embed_sweep (EV_P_ ev_embed *w)
2153	{	2440	{
2154	ev_loop (w->loop, EVLOOP_NONBLOCK);	2441	ev_loop (w->other, EVLOOP_NONBLOCK);
2155	}	2442	}
2156		2443
2157	static void	2444	static void
2158	embed_cb (EV_P_ ev_io *io, int revents)	2445	embed_io_cb (EV_P_ ev_io *io, int revents)
2159	{	2446	{
2160	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2447	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2161		2448
2162	if (ev_cb (w))	2449	if (ev_cb (w))
2163	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2450	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2164	else	2451	else
2165	ev_embed_sweep (loop, w);	2452	ev_loop (w->other, EVLOOP_NONBLOCK);
2166	}	2453	}
		2454
		2455	static void
		2456	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2457	{
		2458	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2459
		2460	{
		2461	struct ev_loop *loop = w->other;
		2462
		2463	while (fdchangecnt)
		2464	{
		2465	fd_reify (EV_A);
		2466	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2467	}
		2468	}
		2469	}
		2470
		2471	#if 0
		2472	static void
		2473	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2474	{
		2475	ev_idle_stop (EV_A_ idle);
		2476	}
		2477	#endif
2167		2478
2168	void	2479	void
2169	ev_embed_start (EV_P_ ev_embed *w)	2480	ev_embed_start (EV_P_ ev_embed *w)
2170	{	2481	{
2171	if (expect_false (ev_is_active (w)))	2482	if (expect_false (ev_is_active (w)))
2172	return;	2483	return;
2173		2484
2174	{	2485	{
2175	struct ev_loop *loop = w->loop;	2486	struct ev_loop *loop = w->other;
2176	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2487	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2177	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2488	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2178	}	2489	}
2179		2490
2180	ev_set_priority (&w->io, ev_priority (w));	2491	ev_set_priority (&w->io, ev_priority (w));
2181	ev_io_start (EV_A_ &w->io);	2492	ev_io_start (EV_A_ &w->io);
2182		2493
		2494	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2495	ev_set_priority (&w->prepare, EV_MINPRI);
		2496	ev_prepare_start (EV_A_ &w->prepare);
		2497
		2498	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2499
2183	ev_start (EV_A_ (W)w, 1);	2500	ev_start (EV_A_ (W)w, 1);
2184	}	2501	}
2185		2502
2186	void	2503	void
2187	ev_embed_stop (EV_P_ ev_embed *w)	2504	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2189	clear_pending (EV_A_ (W)w);	2506	clear_pending (EV_A_ (W)w);
2190	if (expect_false (!ev_is_active (w)))	2507	if (expect_false (!ev_is_active (w)))
2191	return;	2508	return;
2192		2509
2193	ev_io_stop (EV_A_ &w->io);	2510	ev_io_stop (EV_A_ &w->io);
		2511	ev_prepare_stop (EV_A_ &w->prepare);
2194		2512
2195	ev_stop (EV_A_ (W)w);	2513	ev_stop (EV_A_ (W)w);
2196	}	2514	}
2197	#endif	2515	#endif
2198		2516
…		…
2223		2541
2224	ev_stop (EV_A_ (W)w);	2542	ev_stop (EV_A_ (W)w);
2225	}	2543	}
2226	#endif	2544	#endif
2227		2545
		2546	#if EV_ASYNC_ENABLE
		2547	void
		2548	ev_async_start (EV_P_ ev_async *w)
		2549	{
		2550	if (expect_false (ev_is_active (w)))
		2551	return;
		2552
		2553	evpipe_init (EV_A);
		2554
		2555	ev_start (EV_A_ (W)w, ++asynccnt);
		2556	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2557	asyncs [asynccnt - 1] = w;
		2558	}
		2559
		2560	void
		2561	ev_async_stop (EV_P_ ev_async *w)
		2562	{
		2563	clear_pending (EV_A_ (W)w);
		2564	if (expect_false (!ev_is_active (w)))
		2565	return;
		2566
		2567	{
		2568	int active = ((W)w)->active;
		2569	asyncs [active - 1] = asyncs [--asynccnt];
		2570	((W)asyncs [active - 1])->active = active;
		2571	}
		2572
		2573	ev_stop (EV_A_ (W)w);
		2574	}
		2575
		2576	void
		2577	ev_async_send (EV_P_ ev_async *w)
		2578	{
		2579	w->sent = 1;
		2580	evpipe_write (EV_A_ &gotasync);
		2581	}
		2582	#endif
		2583
2228	/*****************************************************************************/	2584	/*****************************************************************************/
2229		2585
2230	struct ev_once	2586	struct ev_once
2231	{	2587	{
2232	ev_io io;	2588	ev_io io;
…		…
2287	ev_timer_set (&once->to, timeout, 0.);	2643	ev_timer_set (&once->to, timeout, 0.);
2288	ev_timer_start (EV_A_ &once->to);	2644	ev_timer_start (EV_A_ &once->to);
2289	}	2645	}
2290	}	2646	}
2291		2647
		2648	#if EV_MULTIPLICITY
		2649	#include "ev_wrap.h"
		2650	#endif
		2651
2292	#ifdef __cplusplus	2652	#ifdef __cplusplus
2293	}	2653	}
2294	#endif	2654	#endif
2295		2655

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