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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 1.227 by root, Fri May 2 07:20:01 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	#if EV_USE_MONOTONIC
		331	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		332	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	333	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		334	#endif
256		335
257	#ifdef _WIN32	336	#ifdef _WIN32
258	# include "ev_win32.c"	337	# include "ev_win32.c"
259	#endif	338	#endif
260		339
…		…
281	perror (msg);	360	perror (msg);
282	abort ();	361	abort ();
283	}	362	}
284	}	363	}
285		364
		365	static void *
		366	ev_realloc_emul (void *ptr, long size)
		367	{
		368	/* some systems, notably openbsd and darwin, fail to properly
		369	* implement realloc (x, 0) (as required by both ansi c-98 and
		370	* the single unix specification, so work around them here.
		371	*/
		372
		373	if (size)
		374	return realloc (ptr, size);
		375
		376	free (ptr);
		377	return 0;
		378	}
		379
286	static void *(*alloc)(void *ptr, long size);	380	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
287		381
288	void	382	void
289	ev_set_allocator (void *(*cb)(void *ptr, long size))	383	ev_set_allocator (void *(*cb)(void *ptr, long size))
290	{	384	{
291	alloc = cb;	385	alloc = cb;
292	}	386	}
293		387
294	inline_speed void *	388	inline_speed void *
295	ev_realloc (void *ptr, long size)	389	ev_realloc (void *ptr, long size)
296	{	390	{
297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	391	ptr = alloc (ptr, size);
298		392
299	if (!ptr && size)	393	if (!ptr && size)
300	{	394	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	395	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	396	abort ();
…		…
396	{	490	{
397	return ev_rt_now;	491	return ev_rt_now;
398	}	492	}
399	#endif	493	#endif
400		494
		495	void
		496	ev_sleep (ev_tstamp delay)
		497	{
		498	if (delay > 0.)
		499	{
		500	#if EV_USE_NANOSLEEP
		501	struct timespec ts;
		502
		503	ts.tv_sec = (time_t)delay;
		504	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		505
		506	nanosleep (&ts, 0);
		507	#elif defined(_WIN32)
		508	Sleep ((unsigned long)(delay * 1e3));
		509	#else
		510	struct timeval tv;
		511
		512	tv.tv_sec = (time_t)delay;
		513	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		514
		515	select (0, 0, 0, 0, &tv);
		516	#endif
		517	}
		518	}
		519
		520	/*****************************************************************************/
		521
401	int inline_size	522	int inline_size
402	array_nextsize (int elem, int cur, int cnt)	523	array_nextsize (int elem, int cur, int cnt)
403	{	524	{
404	int ncur = cur + 1;	525	int ncur = cur + 1;
405		526
…		…
417	}	538	}
418		539
419	return ncur;	540	return ncur;
420	}	541	}
421		542
422	inline_speed void *	543	static noinline void *
423	array_realloc (int elem, void *base, int *cur, int cnt)	544	array_realloc (int elem, void *base, int *cur, int cnt)
424	{	545	{
425	*cur = array_nextsize (elem, *cur, cnt);	546	*cur = array_nextsize (elem, *cur, cnt);
426	return ev_realloc (base, elem * *cur);	547	return ev_realloc (base, elem * *cur);
427	}	548	}
…		…
452		573
453	void noinline	574	void noinline
454	ev_feed_event (EV_P_ void *w, int revents)	575	ev_feed_event (EV_P_ void *w, int revents)
455	{	576	{
456	W w_ = (W)w;	577	W w_ = (W)w;
		578	int pri = ABSPRI (w_);
457		579
458	if (expect_false (w_->pending))	580	if (expect_false (w_->pending))
		581	pendings [pri][w_->pending - 1].events |= revents;
		582	else
459	{	583	{
		584	w_->pending = ++pendingcnt [pri];
		585	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		586	pendings [pri][w_->pending - 1].w = w_;
460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	587	pendings [pri][w_->pending - 1].events = revents;
461	return;
462	}	588	}
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	}	589	}
469		590
470	void inline_size	591	void inline_speed
471	queue_events (EV_P_ W *events, int eventcnt, int type)	592	queue_events (EV_P_ W *events, int eventcnt, int type)
472	{	593	{
473	int i;	594	int i;
474		595
475	for (i = 0; i < eventcnt; ++i)	596	for (i = 0; i < eventcnt; ++i)
…		…
522	{	643	{
523	int fd = fdchanges [i];	644	int fd = fdchanges [i];
524	ANFD *anfd = anfds + fd;	645	ANFD *anfd = anfds + fd;
525	ev_io *w;	646	ev_io *w;
526		647
527	int events = 0;	648	unsigned char events = 0;
528		649
529	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	650	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
530	events |= w->events;	651	events |= (unsigned char)w->events;
531		652
532	#if EV_SELECT_IS_WINSOCKET	653	#if EV_SELECT_IS_WINSOCKET
533	if (events)	654	if (events)
534	{	655	{
535	unsigned long argp;	656	unsigned long argp;
		657	#ifdef EV_FD_TO_WIN32_HANDLE
		658	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		659	#else
536	anfd->handle = _get_osfhandle (fd);	660	anfd->handle = _get_osfhandle (fd);
		661	#endif
537	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	662	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
538	}	663	}
539	#endif	664	#endif
540		665
		666	{
		667	unsigned char o_events = anfd->events;
		668	unsigned char o_reify = anfd->reify;
		669
541	anfd->reify = 0;	670	anfd->reify = 0;
542
543	backend_modify (EV_A_ fd, anfd->events, events);
544	anfd->events = events;	671	anfd->events = events;
		672
		673	if (o_events != events || o_reify & EV_IOFDSET)
		674	backend_modify (EV_A_ fd, o_events, events);
		675	}
545	}	676	}
546		677
547	fdchangecnt = 0;	678	fdchangecnt = 0;
548	}	679	}
549		680
550	void inline_size	681	void inline_size
551	fd_change (EV_P_ int fd)	682	fd_change (EV_P_ int fd, int flags)
552	{	683	{
553	if (expect_false (anfds [fd].reify))	684	unsigned char reify = anfds [fd].reify;
554	return;
555
556	anfds [fd].reify = 1;	685	anfds [fd].reify |= flags;
557		686
		687	if (expect_true (!reify))
		688	{
558	++fdchangecnt;	689	++fdchangecnt;
559	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
560	fdchanges [fdchangecnt - 1] = fd;	691	fdchanges [fdchangecnt - 1] = fd;
		692	}
561	}	693	}
562		694
563	void inline_speed	695	void inline_speed
564	fd_kill (EV_P_ int fd)	696	fd_kill (EV_P_ int fd)
565	{	697	{
…		…
616		748
617	for (fd = 0; fd < anfdmax; ++fd)	749	for (fd = 0; fd < anfdmax; ++fd)
618	if (anfds [fd].events)	750	if (anfds [fd].events)
619	{	751	{
620	anfds [fd].events = 0;	752	anfds [fd].events = 0;
621	fd_change (EV_A_ fd);	753	fd_change (EV_A_ fd, EV_IOFDSET | 1);
622	}	754	}
623	}	755	}
624		756
625	/*****************************************************************************/	757	/*****************************************************************************/
626		758
		759	/* towards the root */
627	void inline_speed	760	void inline_speed
628	upheap (WT *heap, int k)	761	upheap (WT *heap, int k)
629	{	762	{
630	WT w = heap [k];	763	WT w = heap [k];
631		764
632	while (k && heap [k >> 1]->at > w->at)	765	while (k)
633	{	766	{
		767	int p = (k - 1) >> 1;
		768
		769	if (heap [p]->at <= w->at)
		770	break;
		771
634	heap [k] = heap [k >> 1];	772	heap [k] = heap [p];
635	((W)heap [k])->active = k + 1;	773	((W)heap [k])->active = k + 1;
636	k >>= 1;	774	k = p;
637	}	775	}
638		776
639	heap [k] = w;	777	heap [k] = w;
640	((W)heap [k])->active = k + 1;	778	((W)heap [k])->active = k + 1;
641
642	}	779	}
643		780
		781	/* away from the root */
644	void inline_speed	782	void inline_speed
645	downheap (WT *heap, int N, int k)	783	downheap (WT *heap, int N, int k)
646	{	784	{
647	WT w = heap [k];	785	WT w = heap [k];
648		786
649	while (k < (N >> 1))	787	for (;;)
650	{	788	{
651	int j = k << 1;	789	int c = (k << 1) + 1;
652		790
653	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	791	if (c >= N)
654	++j;
655
656	if (w->at <= heap [j]->at)
657	break;	792	break;
658		793
		794	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		795	? 1 : 0;
		796
		797	if (w->at <= heap [c]->at)
		798	break;
		799
659	heap [k] = heap [j];	800	heap [k] = heap [c];
660	((W)heap [k])->active = k + 1;	801	((W)heap [k])->active = k + 1;
		802
661	k = j;	803	k = c;
662	}	804	}
663		805
664	heap [k] = w;	806	heap [k] = w;
665	((W)heap [k])->active = k + 1;	807	((W)heap [k])->active = k + 1;
666	}	808	}
…		…
675	/*****************************************************************************/	817	/*****************************************************************************/
676		818
677	typedef struct	819	typedef struct
678	{	820	{
679	WL head;	821	WL head;
680	sig_atomic_t volatile gotsig;	822	EV_ATOMIC_T gotsig;
681	} ANSIG;	823	} ANSIG;
682		824
683	static ANSIG *signals;	825	static ANSIG *signals;
684	static int signalmax;	826	static int signalmax;
685		827
686	static int sigpipe [2];	828	static EV_ATOMIC_T gotsig;
687	static sig_atomic_t volatile gotsig;
688	static ev_io sigev;
689		829
690	void inline_size	830	void inline_size
691	signals_init (ANSIG *base, int count)	831	signals_init (ANSIG *base, int count)
692	{	832	{
693	while (count--)	833	while (count--)
…		…
697		837
698	++base;	838	++base;
699	}	839	}
700	}	840	}
701		841
702	static void	842	/*****************************************************************************/
703	sighandler (int signum)
704	{
705	#if _WIN32
706	signal (signum, sighandler);
707	#endif
708		843
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	844	void inline_speed
754	fd_intern (int fd)	845	fd_intern (int fd)
755	{	846	{
756	#ifdef _WIN32	847	#ifdef _WIN32
757	int arg = 1;	848	int arg = 1;
758	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	849	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
761	fcntl (fd, F_SETFL, O_NONBLOCK);	852	fcntl (fd, F_SETFL, O_NONBLOCK);
762	#endif	853	#endif
763	}	854	}
764		855
765	static void noinline	856	static void noinline
766	siginit (EV_P)	857	evpipe_init (EV_P)
767	{	858	{
		859	if (!ev_is_active (&pipeev))
		860	{
		861	#if EV_USE_EVENTFD
		862	if ((evfd = eventfd (0, 0)) >= 0)
		863	{
		864	evpipe [0] = -1;
		865	fd_intern (evfd);
		866	ev_io_set (&pipeev, evfd, EV_READ);
		867	}
		868	else
		869	#endif
		870	{
		871	while (pipe (evpipe))
		872	syserr ("(libev) error creating signal/async pipe");
		873
768	fd_intern (sigpipe [0]);	874	fd_intern (evpipe [0]);
769	fd_intern (sigpipe [1]);	875	fd_intern (evpipe [1]);
		876	ev_io_set (&pipeev, evpipe [0], EV_READ);
		877	}
770		878
771	ev_io_set (&sigev, sigpipe [0], EV_READ);
772	ev_io_start (EV_A_ &sigev);	879	ev_io_start (EV_A_ &pipeev);
773	ev_unref (EV_A); /* child watcher should not keep loop alive */	880	ev_unref (EV_A); /* watcher should not keep loop alive */
		881	}
		882	}
		883
		884	void inline_size
		885	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		886	{
		887	if (!*flag)
		888	{
		889	int old_errno = errno; /* save errno because write might clobber it */
		890
		891	*flag = 1;
		892
		893	#if EV_USE_EVENTFD
		894	if (evfd >= 0)
		895	{
		896	uint64_t counter = 1;
		897	write (evfd, &counter, sizeof (uint64_t));
		898	}
		899	else
		900	#endif
		901	write (evpipe [1], &old_errno, 1);
		902
		903	errno = old_errno;
		904	}
		905	}
		906
		907	static void
		908	pipecb (EV_P_ ev_io *iow, int revents)
		909	{
		910	#if EV_USE_EVENTFD
		911	if (evfd >= 0)
		912	{
		913	uint64_t counter = 1;
		914	read (evfd, &counter, sizeof (uint64_t));
		915	}
		916	else
		917	#endif
		918	{
		919	char dummy;
		920	read (evpipe [0], &dummy, 1);
		921	}
		922
		923	if (gotsig && ev_is_default_loop (EV_A))
		924	{
		925	int signum;
		926	gotsig = 0;
		927
		928	for (signum = signalmax; signum--; )
		929	if (signals [signum].gotsig)
		930	ev_feed_signal_event (EV_A_ signum + 1);
		931	}
		932
		933	#if EV_ASYNC_ENABLE
		934	if (gotasync)
		935	{
		936	int i;
		937	gotasync = 0;
		938
		939	for (i = asynccnt; i--; )
		940	if (asyncs [i]->sent)
		941	{
		942	asyncs [i]->sent = 0;
		943	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		944	}
		945	}
		946	#endif
774	}	947	}
775		948
776	/*****************************************************************************/	949	/*****************************************************************************/
777		950
		951	static void
		952	ev_sighandler (int signum)
		953	{
		954	#if EV_MULTIPLICITY
		955	struct ev_loop *loop = &default_loop_struct;
		956	#endif
		957
		958	#if _WIN32
		959	signal (signum, ev_sighandler);
		960	#endif
		961
		962	signals [signum - 1].gotsig = 1;
		963	evpipe_write (EV_A_ &gotsig);
		964	}
		965
		966	void noinline
		967	ev_feed_signal_event (EV_P_ int signum)
		968	{
		969	WL w;
		970
		971	#if EV_MULTIPLICITY
		972	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		973	#endif
		974
		975	--signum;
		976
		977	if (signum < 0 || signum >= signalmax)
		978	return;
		979
		980	signals [signum].gotsig = 0;
		981
		982	for (w = signals [signum].head; w; w = w->next)
		983	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		984	}
		985
		986	/*****************************************************************************/
		987
778	static ev_child *childs [EV_PID_HASHSIZE];	988	static WL childs [EV_PID_HASHSIZE];
779		989
780	#ifndef _WIN32	990	#ifndef _WIN32
781		991
782	static ev_signal childev;	992	static ev_signal childev;
783		993
		994	#ifndef WIFCONTINUED
		995	# define WIFCONTINUED(status) 0
		996	#endif
		997
784	void inline_speed	998	void inline_speed
785	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	999	child_reap (EV_P_ int chain, int pid, int status)
786	{	1000	{
787	ev_child *w;	1001	ev_child *w;
		1002	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
788		1003
789	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1004	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1005	{
790	if (w->pid == pid || !w->pid)	1006	if ((w->pid == pid || !w->pid)
		1007	&& (!traced || (w->flags & 1)))
791	{	1008	{
792	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1009	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;	1010	w->rpid = pid;
794	w->rstatus = status;	1011	w->rstatus = status;
795	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1012	ev_feed_event (EV_A_ (W)w, EV_CHILD);
796	}	1013	}
		1014	}
797	}	1015	}
798		1016
799	#ifndef WCONTINUED	1017	#ifndef WCONTINUED
800	# define WCONTINUED 0	1018	# define WCONTINUED 0
801	#endif	1019	#endif
…		…
810	if (!WCONTINUED	1028	if (!WCONTINUED
811	|| errno != EINVAL	1029	|| errno != EINVAL
812	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1030	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
813	return;	1031	return;
814		1032
815	/* make sure we are called again until all childs have been reaped */	1033	/* 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 */	1034	/* 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);	1035	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
818		1036
819	child_reap (EV_A_ sw, pid, pid, status);	1037	child_reap (EV_A_ pid, pid, status);
820	if (EV_PID_HASHSIZE > 1)	1038	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 */	1039	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
822	}	1040	}
823		1041
824	#endif	1042	#endif
825		1043
826	/*****************************************************************************/	1044	/*****************************************************************************/
…		…
898	}	1116	}
899		1117
900	unsigned int	1118	unsigned int
901	ev_embeddable_backends (void)	1119	ev_embeddable_backends (void)
902	{	1120	{
903	return EVBACKEND_EPOLL	1121	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
904	| EVBACKEND_KQUEUE	1122
905	| EVBACKEND_PORT;	1123	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1124	/* please fix it and tell me how to detect the fix */
		1125	flags &= ~EVBACKEND_EPOLL;
		1126
		1127	return flags;
906	}	1128	}
907		1129
908	unsigned int	1130	unsigned int
909	ev_backend (EV_P)	1131	ev_backend (EV_P)
910	{	1132	{
…		…
913		1135
914	unsigned int	1136	unsigned int
915	ev_loop_count (EV_P)	1137	ev_loop_count (EV_P)
916	{	1138	{
917	return loop_count;	1139	return loop_count;
		1140	}
		1141
		1142	void
		1143	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1144	{
		1145	io_blocktime = interval;
		1146	}
		1147
		1148	void
		1149	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1150	{
		1151	timeout_blocktime = interval;
918	}	1152	}
919		1153
920	static void noinline	1154	static void noinline
921	loop_init (EV_P_ unsigned int flags)	1155	loop_init (EV_P_ unsigned int flags)
922	{	1156	{
…		…
928	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1162	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
929	have_monotonic = 1;	1163	have_monotonic = 1;
930	}	1164	}
931	#endif	1165	#endif
932		1166
933	ev_rt_now = ev_time ();	1167	ev_rt_now = ev_time ();
934	mn_now = get_clock ();	1168	mn_now = get_clock ();
935	now_floor = mn_now;	1169	now_floor = mn_now;
936	rtmn_diff = ev_rt_now - mn_now;	1170	rtmn_diff = ev_rt_now - mn_now;
		1171
		1172	io_blocktime = 0.;
		1173	timeout_blocktime = 0.;
		1174	backend = 0;
		1175	backend_fd = -1;
		1176	gotasync = 0;
		1177	#if EV_USE_INOTIFY
		1178	fs_fd = -2;
		1179	#endif
937		1180
938	/* pid check not overridable via env */	1181	/* pid check not overridable via env */
939	#ifndef _WIN32	1182	#ifndef _WIN32
940	if (flags & EVFLAG_FORKCHECK)	1183	if (flags & EVFLAG_FORKCHECK)
941	curpid = getpid ();	1184	curpid = getpid ();
…		…
944	if (!(flags & EVFLAG_NOENV)	1187	if (!(flags & EVFLAG_NOENV)
945	&& !enable_secure ()	1188	&& !enable_secure ()
946	&& getenv ("LIBEV_FLAGS"))	1189	&& getenv ("LIBEV_FLAGS"))
947	flags = atoi (getenv ("LIBEV_FLAGS"));	1190	flags = atoi (getenv ("LIBEV_FLAGS"));
948		1191
949	if (!(flags & 0x0000ffffUL))	1192	if (!(flags & 0x0000ffffU))
950	flags |= ev_recommended_backends ();	1193	flags |= ev_recommended_backends ();
951
952	backend = 0;
953	backend_fd = -1;
954	#if EV_USE_INOTIFY
955	fs_fd = -2;
956	#endif
957		1194
958	#if EV_USE_PORT	1195	#if EV_USE_PORT
959	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1196	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
960	#endif	1197	#endif
961	#if EV_USE_KQUEUE	1198	#if EV_USE_KQUEUE
…		…
969	#endif	1206	#endif
970	#if EV_USE_SELECT	1207	#if EV_USE_SELECT
971	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1208	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
972	#endif	1209	#endif
973		1210
974	ev_init (&sigev, sigcb);	1211	ev_init (&pipeev, pipecb);
975	ev_set_priority (&sigev, EV_MAXPRI);	1212	ev_set_priority (&pipeev, EV_MAXPRI);
976	}	1213	}
977	}	1214	}
978		1215
979	static void noinline	1216	static void noinline
980	loop_destroy (EV_P)	1217	loop_destroy (EV_P)
981	{	1218	{
982	int i;	1219	int i;
		1220
		1221	if (ev_is_active (&pipeev))
		1222	{
		1223	ev_ref (EV_A); /* signal watcher */
		1224	ev_io_stop (EV_A_ &pipeev);
		1225
		1226	#if EV_USE_EVENTFD
		1227	if (evfd >= 0)
		1228	close (evfd);
		1229	#endif
		1230
		1231	if (evpipe [0] >= 0)
		1232	{
		1233	close (evpipe [0]);
		1234	close (evpipe [1]);
		1235	}
		1236	}
983		1237
984	#if EV_USE_INOTIFY	1238	#if EV_USE_INOTIFY
985	if (fs_fd >= 0)	1239	if (fs_fd >= 0)
986	close (fs_fd);	1240	close (fs_fd);
987	#endif	1241	#endif
…		…
1010	array_free (pending, [i]);	1264	array_free (pending, [i]);
1011	#if EV_IDLE_ENABLE	1265	#if EV_IDLE_ENABLE
1012	array_free (idle, [i]);	1266	array_free (idle, [i]);
1013	#endif	1267	#endif
1014	}	1268	}
		1269
		1270	ev_free (anfds); anfdmax = 0;
1015		1271
1016	/* have to use the microsoft-never-gets-it-right macro */	1272	/* have to use the microsoft-never-gets-it-right macro */
1017	array_free (fdchange, EMPTY);	1273	array_free (fdchange, EMPTY);
1018	array_free (timer, EMPTY);	1274	array_free (timer, EMPTY);
1019	#if EV_PERIODIC_ENABLE	1275	#if EV_PERIODIC_ENABLE
1020	array_free (periodic, EMPTY);	1276	array_free (periodic, EMPTY);
1021	#endif	1277	#endif
		1278	#if EV_FORK_ENABLE
		1279	array_free (fork, EMPTY);
		1280	#endif
1022	array_free (prepare, EMPTY);	1281	array_free (prepare, EMPTY);
1023	array_free (check, EMPTY);	1282	array_free (check, EMPTY);
		1283	#if EV_ASYNC_ENABLE
		1284	array_free (async, EMPTY);
		1285	#endif
1024		1286
1025	backend = 0;	1287	backend = 0;
1026	}	1288	}
1027		1289
		1290	#if EV_USE_INOTIFY
1028	void inline_size infy_fork (EV_P);	1291	void inline_size infy_fork (EV_P);
		1292	#endif
1029		1293
1030	void inline_size	1294	void inline_size
1031	loop_fork (EV_P)	1295	loop_fork (EV_P)
1032	{	1296	{
1033	#if EV_USE_PORT	1297	#if EV_USE_PORT
…		…
1041	#endif	1305	#endif
1042	#if EV_USE_INOTIFY	1306	#if EV_USE_INOTIFY
1043	infy_fork (EV_A);	1307	infy_fork (EV_A);
1044	#endif	1308	#endif
1045		1309
1046	if (ev_is_active (&sigev))	1310	if (ev_is_active (&pipeev))
1047	{	1311	{
1048	/* default loop */	1312	/* this "locks" the handlers against writing to the pipe */
		1313	/* while we modify the fd vars */
		1314	gotsig = 1;
		1315	#if EV_ASYNC_ENABLE
		1316	gotasync = 1;
		1317	#endif
1049		1318
1050	ev_ref (EV_A);	1319	ev_ref (EV_A);
1051	ev_io_stop (EV_A_ &sigev);	1320	ev_io_stop (EV_A_ &pipeev);
		1321
		1322	#if EV_USE_EVENTFD
		1323	if (evfd >= 0)
		1324	close (evfd);
		1325	#endif
		1326
		1327	if (evpipe [0] >= 0)
		1328	{
1052	close (sigpipe [0]);	1329	close (evpipe [0]);
1053	close (sigpipe [1]);	1330	close (evpipe [1]);
		1331	}
1054		1332
1055	while (pipe (sigpipe))
1056	syserr ("(libev) error creating pipe");
1057
1058	siginit (EV_A);	1333	evpipe_init (EV_A);
		1334	/* now iterate over everything, in case we missed something */
		1335	pipecb (EV_A_ &pipeev, EV_READ);
1059	}	1336	}
1060		1337
1061	postfork = 0;	1338	postfork = 0;
1062	}	1339	}
1063		1340
…		…
1085	}	1362	}
1086		1363
1087	void	1364	void
1088	ev_loop_fork (EV_P)	1365	ev_loop_fork (EV_P)
1089	{	1366	{
1090	postfork = 1;	1367	postfork = 1; /* must be in line with ev_default_fork */
1091	}	1368	}
1092		1369
1093	#endif	1370	#endif
1094		1371
1095	#if EV_MULTIPLICITY	1372	#if EV_MULTIPLICITY
…		…
1098	#else	1375	#else
1099	int	1376	int
1100	ev_default_loop (unsigned int flags)	1377	ev_default_loop (unsigned int flags)
1101	#endif	1378	#endif
1102	{	1379	{
1103	if (sigpipe [0] == sigpipe [1])
1104	if (pipe (sigpipe))
1105	return 0;
1106
1107	if (!ev_default_loop_ptr)	1380	if (!ev_default_loop_ptr)
1108	{	1381	{
1109	#if EV_MULTIPLICITY	1382	#if EV_MULTIPLICITY
1110	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1383	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1111	#else	1384	#else
…		…
1114		1387
1115	loop_init (EV_A_ flags);	1388	loop_init (EV_A_ flags);
1116		1389
1117	if (ev_backend (EV_A))	1390	if (ev_backend (EV_A))
1118	{	1391	{
1119	siginit (EV_A);
1120
1121	#ifndef _WIN32	1392	#ifndef _WIN32
1122	ev_signal_init (&childev, childcb, SIGCHLD);	1393	ev_signal_init (&childev, childcb, SIGCHLD);
1123	ev_set_priority (&childev, EV_MAXPRI);	1394	ev_set_priority (&childev, EV_MAXPRI);
1124	ev_signal_start (EV_A_ &childev);	1395	ev_signal_start (EV_A_ &childev);
1125	ev_unref (EV_A); /* child watcher should not keep loop alive */	1396	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1142	#ifndef _WIN32	1413	#ifndef _WIN32
1143	ev_ref (EV_A); /* child watcher */	1414	ev_ref (EV_A); /* child watcher */
1144	ev_signal_stop (EV_A_ &childev);	1415	ev_signal_stop (EV_A_ &childev);
1145	#endif	1416	#endif
1146		1417
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);	1418	loop_destroy (EV_A);
1154	}	1419	}
1155		1420
1156	void	1421	void
1157	ev_default_fork (void)	1422	ev_default_fork (void)
…		…
1159	#if EV_MULTIPLICITY	1424	#if EV_MULTIPLICITY
1160	struct ev_loop *loop = ev_default_loop_ptr;	1425	struct ev_loop *loop = ev_default_loop_ptr;
1161	#endif	1426	#endif
1162		1427
1163	if (backend)	1428	if (backend)
1164	postfork = 1;	1429	postfork = 1; /* must be in line with ev_loop_fork */
1165	}	1430	}
1166		1431
1167	/*****************************************************************************/	1432	/*****************************************************************************/
1168		1433
1169	void	1434	void
…		…
1195	void inline_size	1460	void inline_size
1196	timers_reify (EV_P)	1461	timers_reify (EV_P)
1197	{	1462	{
1198	while (timercnt && ((WT)timers [0])->at <= mn_now)	1463	while (timercnt && ((WT)timers [0])->at <= mn_now)
1199	{	1464	{
1200	ev_timer *w = timers [0];	1465	ev_timer *w = (ev_timer *)timers [0];
1201		1466
1202	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/	1467	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1203		1468
1204	/* first reschedule or stop timer */	1469	/* first reschedule or stop timer */
1205	if (w->repeat)	1470	if (w->repeat)
…		…
1208		1473
1209	((WT)w)->at += w->repeat;	1474	((WT)w)->at += w->repeat;
1210	if (((WT)w)->at < mn_now)	1475	if (((WT)w)->at < mn_now)
1211	((WT)w)->at = mn_now;	1476	((WT)w)->at = mn_now;
1212		1477
1213	downheap ((WT *)timers, timercnt, 0);	1478	downheap (timers, timercnt, 0);
1214	}	1479	}
1215	else	1480	else
1216	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1481	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1217		1482
1218	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1483	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1223	void inline_size	1488	void inline_size
1224	periodics_reify (EV_P)	1489	periodics_reify (EV_P)
1225	{	1490	{
1226	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1491	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1227	{	1492	{
1228	ev_periodic *w = periodics [0];	1493	ev_periodic *w = (ev_periodic *)periodics [0];
1229		1494
1230	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	1495	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1231		1496
1232	/* first reschedule or stop timer */	1497	/* first reschedule or stop timer */
1233	if (w->reschedule_cb)	1498	if (w->reschedule_cb)
1234	{	1499	{
1235	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1500	((WT)w)->at = 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));	1501	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1237	downheap ((WT *)periodics, periodiccnt, 0);	1502	downheap (periodics, periodiccnt, 0);
1238	}	1503	}
1239	else if (w->interval)	1504	else if (w->interval)
1240	{	1505	{
1241	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1506	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1507	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1242	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1508	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1243	downheap ((WT *)periodics, periodiccnt, 0);	1509	downheap (periodics, periodiccnt, 0);
1244	}	1510	}
1245	else	1511	else
1246	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1512	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1247		1513
1248	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1514	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1255	int i;	1521	int i;
1256		1522
1257	/* adjust periodics after time jump */	1523	/* adjust periodics after time jump */
1258	for (i = 0; i < periodiccnt; ++i)	1524	for (i = 0; i < periodiccnt; ++i)
1259	{	1525	{
1260	ev_periodic *w = periodics [i];	1526	ev_periodic *w = (ev_periodic *)periodics [i];
1261		1527
1262	if (w->reschedule_cb)	1528	if (w->reschedule_cb)
1263	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1529	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1264	else if (w->interval)	1530	else if (w->interval)
1265	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1531	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1266	}	1532	}
1267		1533
1268	/* now rebuild the heap */	1534	/* now rebuild the heap */
1269	for (i = periodiccnt >> 1; i--; )	1535	for (i = periodiccnt >> 1; i--; )
1270	downheap ((WT *)periodics, periodiccnt, i);	1536	downheap (periodics, periodiccnt, i);
1271	}	1537	}
1272	#endif	1538	#endif
1273		1539
1274	#if EV_IDLE_ENABLE	1540	#if EV_IDLE_ENABLE
1275	void inline_size	1541	void inline_size
…		…
1292	}	1558	}
1293	}	1559	}
1294	}	1560	}
1295	#endif	1561	#endif
1296		1562
1297	int inline_size	1563	void inline_speed
1298	time_update_monotonic (EV_P)	1564	time_update (EV_P_ ev_tstamp max_block)
1299	{	1565	{
		1566	int i;
		1567
		1568	#if EV_USE_MONOTONIC
		1569	if (expect_true (have_monotonic))
		1570	{
		1571	ev_tstamp odiff = rtmn_diff;
		1572
1300	mn_now = get_clock ();	1573	mn_now = get_clock ();
1301		1574
		1575	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1576	/* interpolate in the meantime */
1302	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1577	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1303	{	1578	{
1304	ev_rt_now = rtmn_diff + mn_now;	1579	ev_rt_now = rtmn_diff + mn_now;
1305	return 0;	1580	return;
1306	}	1581	}
1307	else	1582
1308	{
1309	now_floor = mn_now;	1583	now_floor = mn_now;
1310	ev_rt_now = ev_time ();	1584	ev_rt_now = ev_time ();
1311	return 1;
1312	}
1313	}
1314		1585
1315	void inline_size	1586	/* loop a few times, before making important decisions.
1316	time_update (EV_P)	1587	* on the choice of "4": one iteration isn't enough,
1317	{	1588	* in case we get preempted during the calls to
1318	int i;	1589	* ev_time and get_clock. a second call is almost guaranteed
1319		1590	* to succeed in that case, though. and looping a few more times
1320	#if EV_USE_MONOTONIC	1591	* doesn't hurt either as we only do this on time-jumps or
1321	if (expect_true (have_monotonic))	1592	* in the unlikely event of having been preempted here.
1322	{	1593	*/
1323	if (time_update_monotonic (EV_A))	1594	for (i = 4; --i; )
1324	{	1595	{
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;	1596	rtmn_diff = ev_rt_now - mn_now;
1338		1597
1339	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1598	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1340	return; /* all is well */	1599	return; /* all is well */
1341		1600
1342	ev_rt_now = ev_time ();	1601	ev_rt_now = ev_time ();
1343	mn_now = get_clock ();	1602	mn_now = get_clock ();
1344	now_floor = mn_now;	1603	now_floor = mn_now;
1345	}	1604	}
1346		1605
1347	# if EV_PERIODIC_ENABLE	1606	# if EV_PERIODIC_ENABLE
1348	periodics_reschedule (EV_A);	1607	periodics_reschedule (EV_A);
1349	# endif	1608	# endif
1350	/* no timer adjustment, as the monotonic clock doesn't jump */	1609	/* no timer adjustment, as the monotonic clock doesn't jump */
1351	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1610	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1352	}
1353	}	1611	}
1354	else	1612	else
1355	#endif	1613	#endif
1356	{	1614	{
1357	ev_rt_now = ev_time ();	1615	ev_rt_now = ev_time ();
1358		1616
1359	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1617	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1360	{	1618	{
1361	#if EV_PERIODIC_ENABLE	1619	#if EV_PERIODIC_ENABLE
1362	periodics_reschedule (EV_A);	1620	periodics_reschedule (EV_A);
1363	#endif	1621	#endif
1364
1365	/* adjust timers. this is easy, as the offset is the same for all of them */	1622	/* adjust timers. this is easy, as the offset is the same for all of them */
1366	for (i = 0; i < timercnt; ++i)	1623	for (i = 0; i < timercnt; ++i)
1367	((WT)timers [i])->at += ev_rt_now - mn_now;	1624	((WT)timers [i])->at += ev_rt_now - mn_now;
1368	}	1625	}
1369		1626
…		…
1386	static int loop_done;	1643	static int loop_done;
1387		1644
1388	void	1645	void
1389	ev_loop (EV_P_ int flags)	1646	ev_loop (EV_P_ int flags)
1390	{	1647	{
1391	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1648	loop_done = EVUNLOOP_CANCEL;
1392	? EVUNLOOP_ONE
1393	: EVUNLOOP_CANCEL;
1394		1649
1395	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1650	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1396		1651
1397	do	1652	do
1398	{	1653	{
…		…
1413	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1668	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1414	call_pending (EV_A);	1669	call_pending (EV_A);
1415	}	1670	}
1416	#endif	1671	#endif
1417		1672
1418	/* queue check watchers (and execute them) */	1673	/* queue prepare watchers (and execute them) */
1419	if (expect_false (preparecnt))	1674	if (expect_false (preparecnt))
1420	{	1675	{
1421	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1676	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1422	call_pending (EV_A);	1677	call_pending (EV_A);
1423	}	1678	}
…		…
1432	/* update fd-related kernel structures */	1687	/* update fd-related kernel structures */
1433	fd_reify (EV_A);	1688	fd_reify (EV_A);
1434		1689
1435	/* calculate blocking time */	1690	/* calculate blocking time */
1436	{	1691	{
1437	ev_tstamp block;	1692	ev_tstamp waittime = 0.;
		1693	ev_tstamp sleeptime = 0.;
1438		1694
1439	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	1695	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1440	block = 0.; /* do not block at all */
1441	else
1442	{	1696	{
1443	/* update time to cancel out callback processing overhead */	1697	/* 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);	1698	time_update (EV_A_ 1e100);
1447	else
1448	#endif
1449	{
1450	ev_rt_now = ev_time ();
1451	mn_now = ev_rt_now;
1452	}
1453		1699
1454	block = MAX_BLOCKTIME;	1700	waittime = MAX_BLOCKTIME;
1455		1701
1456	if (timercnt)	1702	if (timercnt)
1457	{	1703	{
1458	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1704	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1459	if (block > to) block = to;	1705	if (waittime > to) waittime = to;
1460	}	1706	}
1461		1707
1462	#if EV_PERIODIC_ENABLE	1708	#if EV_PERIODIC_ENABLE
1463	if (periodiccnt)	1709	if (periodiccnt)
1464	{	1710	{
1465	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1711	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1466	if (block > to) block = to;	1712	if (waittime > to) waittime = to;
1467	}	1713	}
1468	#endif	1714	#endif
1469		1715
1470	if (expect_false (block < 0.)) block = 0.;	1716	if (expect_false (waittime < timeout_blocktime))
		1717	waittime = timeout_blocktime;
		1718
		1719	sleeptime = waittime - backend_fudge;
		1720
		1721	if (expect_true (sleeptime > io_blocktime))
		1722	sleeptime = io_blocktime;
		1723
		1724	if (sleeptime)
		1725	{
		1726	ev_sleep (sleeptime);
		1727	waittime -= sleeptime;
		1728	}
1471	}	1729	}
1472		1730
1473	++loop_count;	1731	++loop_count;
1474	backend_poll (EV_A_ block);	1732	backend_poll (EV_A_ waittime);
		1733
		1734	/* update ev_rt_now, do magic */
		1735	time_update (EV_A_ waittime + sleeptime);
1475	}	1736	}
1476
1477	/* update ev_rt_now, do magic */
1478	time_update (EV_A);
1479		1737
1480	/* queue pending timers and reschedule them */	1738	/* queue pending timers and reschedule them */
1481	timers_reify (EV_A); /* relative timers called last */	1739	timers_reify (EV_A); /* relative timers called last */
1482	#if EV_PERIODIC_ENABLE	1740	#if EV_PERIODIC_ENABLE
1483	periodics_reify (EV_A); /* absolute timers called first */	1741	periodics_reify (EV_A); /* absolute timers called first */
…		…
1491	/* queue check watchers, to be executed first */	1749	/* queue check watchers, to be executed first */
1492	if (expect_false (checkcnt))	1750	if (expect_false (checkcnt))
1493	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1751	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1494		1752
1495	call_pending (EV_A);	1753	call_pending (EV_A);
1496
1497	}	1754	}
1498	while (expect_true (activecnt && !loop_done));	1755	while (expect_true (
		1756	activecnt
		1757	&& !loop_done
		1758	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		1759	));
1499		1760
1500	if (loop_done == EVUNLOOP_ONE)	1761	if (loop_done == EVUNLOOP_ONE)
1501	loop_done = EVUNLOOP_CANCEL;	1762	loop_done = EVUNLOOP_CANCEL;
1502	}	1763	}
1503		1764
…		…
1545	ev_clear_pending (EV_P_ void *w)	1806	ev_clear_pending (EV_P_ void *w)
1546	{	1807	{
1547	W w_ = (W)w;	1808	W w_ = (W)w;
1548	int pending = w_->pending;	1809	int pending = w_->pending;
1549		1810
1550	if (!pending)	1811	if (expect_true (pending))
		1812	{
		1813	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1814	w_->pending = 0;
		1815	p->w = 0;
		1816	return p->events;
		1817	}
		1818	else
1551	return 0;	1819	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	}	1820	}
1559		1821
1560	void inline_size	1822	void inline_size
1561	pri_adjust (EV_P_ W w)	1823	pri_adjust (EV_P_ W w)
1562	{	1824	{
…		…
1581	w->active = 0;	1843	w->active = 0;
1582	}	1844	}
1583		1845
1584	/*****************************************************************************/	1846	/*****************************************************************************/
1585		1847
1586	void	1848	void noinline
1587	ev_io_start (EV_P_ ev_io *w)	1849	ev_io_start (EV_P_ ev_io *w)
1588	{	1850	{
1589	int fd = w->fd;	1851	int fd = w->fd;
1590		1852
1591	if (expect_false (ev_is_active (w)))	1853	if (expect_false (ev_is_active (w)))
…		…
1593		1855
1594	assert (("ev_io_start called with negative fd", fd >= 0));	1856	assert (("ev_io_start called with negative fd", fd >= 0));
1595		1857
1596	ev_start (EV_A_ (W)w, 1);	1858	ev_start (EV_A_ (W)w, 1);
1597	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1859	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1598	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1860	wlist_add (&anfds[fd].head, (WL)w);
1599		1861
1600	fd_change (EV_A_ fd);	1862	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1863	w->events &= ~EV_IOFDSET;
1601	}	1864	}
1602		1865
1603	void	1866	void noinline
1604	ev_io_stop (EV_P_ ev_io *w)	1867	ev_io_stop (EV_P_ ev_io *w)
1605	{	1868	{
1606	clear_pending (EV_A_ (W)w);	1869	clear_pending (EV_A_ (W)w);
1607	if (expect_false (!ev_is_active (w)))	1870	if (expect_false (!ev_is_active (w)))
1608	return;	1871	return;
1609		1872
1610	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1873	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1611		1874
1612	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1875	wlist_del (&anfds[w->fd].head, (WL)w);
1613	ev_stop (EV_A_ (W)w);	1876	ev_stop (EV_A_ (W)w);
1614		1877
1615	fd_change (EV_A_ w->fd);	1878	fd_change (EV_A_ w->fd, 1);
1616	}	1879	}
1617		1880
1618	void	1881	void noinline
1619	ev_timer_start (EV_P_ ev_timer *w)	1882	ev_timer_start (EV_P_ ev_timer *w)
1620	{	1883	{
1621	if (expect_false (ev_is_active (w)))	1884	if (expect_false (ev_is_active (w)))
1622	return;	1885	return;
1623		1886
1624	((WT)w)->at += mn_now;	1887	((WT)w)->at += mn_now;
1625		1888
1626	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1889	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1627		1890
1628	ev_start (EV_A_ (W)w, ++timercnt);	1891	ev_start (EV_A_ (W)w, ++timercnt);
1629	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1892	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1630	timers [timercnt - 1] = w;	1893	timers [timercnt - 1] = (WT)w;
1631	upheap ((WT *)timers, timercnt - 1);	1894	upheap (timers, timercnt - 1);
1632		1895
1633	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	1896	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1634	}	1897	}
1635		1898
1636	void	1899	void noinline
1637	ev_timer_stop (EV_P_ ev_timer *w)	1900	ev_timer_stop (EV_P_ ev_timer *w)
1638	{	1901	{
1639	clear_pending (EV_A_ (W)w);	1902	clear_pending (EV_A_ (W)w);
1640	if (expect_false (!ev_is_active (w)))	1903	if (expect_false (!ev_is_active (w)))
1641	return;	1904	return;
1642		1905
1643	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1906	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1644		1907
1645	{	1908	{
1646	int active = ((W)w)->active;	1909	int active = ((W)w)->active;
1647		1910
1648	if (expect_true (--active < --timercnt))	1911	if (expect_true (--active < --timercnt))
1649	{	1912	{
1650	timers [active] = timers [timercnt];	1913	timers [active] = timers [timercnt];
1651	adjustheap ((WT *)timers, timercnt, active);	1914	adjustheap (timers, timercnt, active);
1652	}	1915	}
1653	}	1916	}
1654		1917
1655	((WT)w)->at -= mn_now;	1918	((WT)w)->at -= mn_now;
1656		1919
1657	ev_stop (EV_A_ (W)w);	1920	ev_stop (EV_A_ (W)w);
1658	}	1921	}
1659		1922
1660	void	1923	void noinline
1661	ev_timer_again (EV_P_ ev_timer *w)	1924	ev_timer_again (EV_P_ ev_timer *w)
1662	{	1925	{
1663	if (ev_is_active (w))	1926	if (ev_is_active (w))
1664	{	1927	{
1665	if (w->repeat)	1928	if (w->repeat)
1666	{	1929	{
1667	((WT)w)->at = mn_now + w->repeat;	1930	((WT)w)->at = mn_now + w->repeat;
1668	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1931	adjustheap (timers, timercnt, ((W)w)->active - 1);
1669	}	1932	}
1670	else	1933	else
1671	ev_timer_stop (EV_A_ w);	1934	ev_timer_stop (EV_A_ w);
1672	}	1935	}
1673	else if (w->repeat)	1936	else if (w->repeat)
…		…
1676	ev_timer_start (EV_A_ w);	1939	ev_timer_start (EV_A_ w);
1677	}	1940	}
1678	}	1941	}
1679		1942
1680	#if EV_PERIODIC_ENABLE	1943	#if EV_PERIODIC_ENABLE
1681	void	1944	void noinline
1682	ev_periodic_start (EV_P_ ev_periodic *w)	1945	ev_periodic_start (EV_P_ ev_periodic *w)
1683	{	1946	{
1684	if (expect_false (ev_is_active (w)))	1947	if (expect_false (ev_is_active (w)))
1685	return;	1948	return;
1686		1949
…		…
1688	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1951	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1689	else if (w->interval)	1952	else if (w->interval)
1690	{	1953	{
1691	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1954	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 */	1955	/* 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;	1956	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1694	}	1957	}
		1958	else
		1959	((WT)w)->at = w->offset;
1695		1960
1696	ev_start (EV_A_ (W)w, ++periodiccnt);	1961	ev_start (EV_A_ (W)w, ++periodiccnt);
1697	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1962	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1698	periodics [periodiccnt - 1] = w;	1963	periodics [periodiccnt - 1] = (WT)w;
1699	upheap ((WT *)periodics, periodiccnt - 1);	1964	upheap (periodics, periodiccnt - 1);
1700		1965
1701	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	1966	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1702	}	1967	}
1703		1968
1704	void	1969	void noinline
1705	ev_periodic_stop (EV_P_ ev_periodic *w)	1970	ev_periodic_stop (EV_P_ ev_periodic *w)
1706	{	1971	{
1707	clear_pending (EV_A_ (W)w);	1972	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	1973	if (expect_false (!ev_is_active (w)))
1709	return;	1974	return;
1710		1975
1711	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1976	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1712		1977
1713	{	1978	{
1714	int active = ((W)w)->active;	1979	int active = ((W)w)->active;
1715		1980
1716	if (expect_true (--active < --periodiccnt))	1981	if (expect_true (--active < --periodiccnt))
1717	{	1982	{
1718	periodics [active] = periodics [periodiccnt];	1983	periodics [active] = periodics [periodiccnt];
1719	adjustheap ((WT *)periodics, periodiccnt, active);	1984	adjustheap (periodics, periodiccnt, active);
1720	}	1985	}
1721	}	1986	}
1722		1987
1723	ev_stop (EV_A_ (W)w);	1988	ev_stop (EV_A_ (W)w);
1724	}	1989	}
1725		1990
1726	void	1991	void noinline
1727	ev_periodic_again (EV_P_ ev_periodic *w)	1992	ev_periodic_again (EV_P_ ev_periodic *w)
1728	{	1993	{
1729	/* TODO: use adjustheap and recalculation */	1994	/* TODO: use adjustheap and recalculation */
1730	ev_periodic_stop (EV_A_ w);	1995	ev_periodic_stop (EV_A_ w);
1731	ev_periodic_start (EV_A_ w);	1996	ev_periodic_start (EV_A_ w);
…		…
1734		1999
1735	#ifndef SA_RESTART	2000	#ifndef SA_RESTART
1736	# define SA_RESTART 0	2001	# define SA_RESTART 0
1737	#endif	2002	#endif
1738		2003
1739	void	2004	void noinline
1740	ev_signal_start (EV_P_ ev_signal *w)	2005	ev_signal_start (EV_P_ ev_signal *w)
1741	{	2006	{
1742	#if EV_MULTIPLICITY	2007	#if EV_MULTIPLICITY
1743	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2008	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1744	#endif	2009	#endif
1745	if (expect_false (ev_is_active (w)))	2010	if (expect_false (ev_is_active (w)))
1746	return;	2011	return;
1747		2012
1748	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2013	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1749		2014
		2015	evpipe_init (EV_A);
		2016
		2017	{
		2018	#ifndef _WIN32
		2019	sigset_t full, prev;
		2020	sigfillset (&full);
		2021	sigprocmask (SIG_SETMASK, &full, &prev);
		2022	#endif
		2023
		2024	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2025
		2026	#ifndef _WIN32
		2027	sigprocmask (SIG_SETMASK, &prev, 0);
		2028	#endif
		2029	}
		2030
1750	ev_start (EV_A_ (W)w, 1);	2031	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);	2032	wlist_add (&signals [w->signum - 1].head, (WL)w);
1753		2033
1754	if (!((WL)w)->next)	2034	if (!((WL)w)->next)
1755	{	2035	{
1756	#if _WIN32	2036	#if _WIN32
1757	signal (w->signum, sighandler);	2037	signal (w->signum, ev_sighandler);
1758	#else	2038	#else
1759	struct sigaction sa;	2039	struct sigaction sa;
1760	sa.sa_handler = sighandler;	2040	sa.sa_handler = ev_sighandler;
1761	sigfillset (&sa.sa_mask);	2041	sigfillset (&sa.sa_mask);
1762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2042	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1763	sigaction (w->signum, &sa, 0);	2043	sigaction (w->signum, &sa, 0);
1764	#endif	2044	#endif
1765	}	2045	}
1766	}	2046	}
1767		2047
1768	void	2048	void noinline
1769	ev_signal_stop (EV_P_ ev_signal *w)	2049	ev_signal_stop (EV_P_ ev_signal *w)
1770	{	2050	{
1771	clear_pending (EV_A_ (W)w);	2051	clear_pending (EV_A_ (W)w);
1772	if (expect_false (!ev_is_active (w)))	2052	if (expect_false (!ev_is_active (w)))
1773	return;	2053	return;
1774		2054
1775	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2055	wlist_del (&signals [w->signum - 1].head, (WL)w);
1776	ev_stop (EV_A_ (W)w);	2056	ev_stop (EV_A_ (W)w);
1777		2057
1778	if (!signals [w->signum - 1].head)	2058	if (!signals [w->signum - 1].head)
1779	signal (w->signum, SIG_DFL);	2059	signal (w->signum, SIG_DFL);
1780	}	2060	}
…		…
1787	#endif	2067	#endif
1788	if (expect_false (ev_is_active (w)))	2068	if (expect_false (ev_is_active (w)))
1789	return;	2069	return;
1790		2070
1791	ev_start (EV_A_ (W)w, 1);	2071	ev_start (EV_A_ (W)w, 1);
1792	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2072	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1793	}	2073	}
1794		2074
1795	void	2075	void
1796	ev_child_stop (EV_P_ ev_child *w)	2076	ev_child_stop (EV_P_ ev_child *w)
1797	{	2077	{
1798	clear_pending (EV_A_ (W)w);	2078	clear_pending (EV_A_ (W)w);
1799	if (expect_false (!ev_is_active (w)))	2079	if (expect_false (!ev_is_active (w)))
1800	return;	2080	return;
1801		2081
1802	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2082	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1803	ev_stop (EV_A_ (W)w);	2083	ev_stop (EV_A_ (W)w);
1804	}	2084	}
1805		2085
1806	#if EV_STAT_ENABLE	2086	#if EV_STAT_ENABLE
1807		2087
…		…
2149		2429
2150	#if EV_EMBED_ENABLE	2430	#if EV_EMBED_ENABLE
2151	void noinline	2431	void noinline
2152	ev_embed_sweep (EV_P_ ev_embed *w)	2432	ev_embed_sweep (EV_P_ ev_embed *w)
2153	{	2433	{
2154	ev_loop (w->loop, EVLOOP_NONBLOCK);	2434	ev_loop (w->other, EVLOOP_NONBLOCK);
2155	}	2435	}
2156		2436
2157	static void	2437	static void
2158	embed_cb (EV_P_ ev_io *io, int revents)	2438	embed_io_cb (EV_P_ ev_io *io, int revents)
2159	{	2439	{
2160	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2440	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2161		2441
2162	if (ev_cb (w))	2442	if (ev_cb (w))
2163	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2443	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2164	else	2444	else
2165	ev_embed_sweep (loop, w);	2445	ev_loop (w->other, EVLOOP_NONBLOCK);
2166	}	2446	}
		2447
		2448	static void
		2449	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2450	{
		2451	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2452
		2453	{
		2454	struct ev_loop *loop = w->other;
		2455
		2456	while (fdchangecnt)
		2457	{
		2458	fd_reify (EV_A);
		2459	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2460	}
		2461	}
		2462	}
		2463
		2464	#if 0
		2465	static void
		2466	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2467	{
		2468	ev_idle_stop (EV_A_ idle);
		2469	}
		2470	#endif
2167		2471
2168	void	2472	void
2169	ev_embed_start (EV_P_ ev_embed *w)	2473	ev_embed_start (EV_P_ ev_embed *w)
2170	{	2474	{
2171	if (expect_false (ev_is_active (w)))	2475	if (expect_false (ev_is_active (w)))
2172	return;	2476	return;
2173		2477
2174	{	2478	{
2175	struct ev_loop *loop = w->loop;	2479	struct ev_loop *loop = w->other;
2176	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2480	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2177	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2481	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2178	}	2482	}
2179		2483
2180	ev_set_priority (&w->io, ev_priority (w));	2484	ev_set_priority (&w->io, ev_priority (w));
2181	ev_io_start (EV_A_ &w->io);	2485	ev_io_start (EV_A_ &w->io);
2182		2486
		2487	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2488	ev_set_priority (&w->prepare, EV_MINPRI);
		2489	ev_prepare_start (EV_A_ &w->prepare);
		2490
		2491	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2492
2183	ev_start (EV_A_ (W)w, 1);	2493	ev_start (EV_A_ (W)w, 1);
2184	}	2494	}
2185		2495
2186	void	2496	void
2187	ev_embed_stop (EV_P_ ev_embed *w)	2497	ev_embed_stop (EV_P_ ev_embed *w)
…		…
2189	clear_pending (EV_A_ (W)w);	2499	clear_pending (EV_A_ (W)w);
2190	if (expect_false (!ev_is_active (w)))	2500	if (expect_false (!ev_is_active (w)))
2191	return;	2501	return;
2192		2502
2193	ev_io_stop (EV_A_ &w->io);	2503	ev_io_stop (EV_A_ &w->io);
		2504	ev_prepare_stop (EV_A_ &w->prepare);
2194		2505
2195	ev_stop (EV_A_ (W)w);	2506	ev_stop (EV_A_ (W)w);
2196	}	2507	}
2197	#endif	2508	#endif
2198		2509
…		…
2223		2534
2224	ev_stop (EV_A_ (W)w);	2535	ev_stop (EV_A_ (W)w);
2225	}	2536	}
2226	#endif	2537	#endif
2227		2538
		2539	#if EV_ASYNC_ENABLE
		2540	void
		2541	ev_async_start (EV_P_ ev_async *w)
		2542	{
		2543	if (expect_false (ev_is_active (w)))
		2544	return;
		2545
		2546	evpipe_init (EV_A);
		2547
		2548	ev_start (EV_A_ (W)w, ++asynccnt);
		2549	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2550	asyncs [asynccnt - 1] = w;
		2551	}
		2552
		2553	void
		2554	ev_async_stop (EV_P_ ev_async *w)
		2555	{
		2556	clear_pending (EV_A_ (W)w);
		2557	if (expect_false (!ev_is_active (w)))
		2558	return;
		2559
		2560	{
		2561	int active = ((W)w)->active;
		2562	asyncs [active - 1] = asyncs [--asynccnt];
		2563	((W)asyncs [active - 1])->active = active;
		2564	}
		2565
		2566	ev_stop (EV_A_ (W)w);
		2567	}
		2568
		2569	void
		2570	ev_async_send (EV_P_ ev_async *w)
		2571	{
		2572	w->sent = 1;
		2573	evpipe_write (EV_A_ &gotasync);
		2574	}
		2575	#endif
		2576
2228	/*****************************************************************************/	2577	/*****************************************************************************/
2229		2578
2230	struct ev_once	2579	struct ev_once
2231	{	2580	{
2232	ev_io io;	2581	ev_io io;
…		…
2287	ev_timer_set (&once->to, timeout, 0.);	2636	ev_timer_set (&once->to, timeout, 0.);
2288	ev_timer_start (EV_A_ &once->to);	2637	ev_timer_start (EV_A_ &once->to);
2289	}	2638	}
2290	}	2639	}
2291		2640
		2641	#if EV_MULTIPLICITY
		2642	#include "ev_wrap.h"
		2643	#endif
		2644
2292	#ifdef __cplusplus	2645	#ifdef __cplusplus
2293	}	2646	}
2294	#endif	2647	#endif
2295		2648

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