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

Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.225 by root, Wed Apr 16 01:37:14 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)->priority - EV_MINPRI)	321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		322
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	323	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	324	#define EMPTY2(a,b) /* used to suppress some warnings */
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)
…		…
507	}	628	}
508		629
509	void	630	void
510	ev_feed_fd_event (EV_P_ int fd, int revents)	631	ev_feed_fd_event (EV_P_ int fd, int revents)
511	{	632	{
		633	if (fd >= 0 && fd < anfdmax)
512	fd_event (EV_A_ fd, revents);	634	fd_event (EV_A_ fd, revents);
513	}	635	}
514		636
515	void inline_size	637	void inline_size
516	fd_reify (EV_P)	638	fd_reify (EV_P)
517	{	639	{
…		…
521	{	643	{
522	int fd = fdchanges [i];	644	int fd = fdchanges [i];
523	ANFD *anfd = anfds + fd;	645	ANFD *anfd = anfds + fd;
524	ev_io *w;	646	ev_io *w;
525		647
526	int events = 0;	648	unsigned char events = 0;
527		649
528	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)
529	events \|= w->events;	651	events \|= (unsigned char)w->events;
530		652
531	#if EV_SELECT_IS_WINSOCKET	653	#if EV_SELECT_IS_WINSOCKET
532	if (events)	654	if (events)
533	{	655	{
534	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
535	anfd->handle = _get_osfhandle (fd);	660	anfd->handle = _get_osfhandle (fd);
		661	#endif
536	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));
537	}	663	}
538	#endif	664	#endif
539		665
		666	{
		667	unsigned char o_events = anfd->events;
		668	unsigned char o_reify = anfd->reify;
		669
540	anfd->reify = 0;	670	anfd->reify = 0;
541
542	backend_modify (EV_A_ fd, anfd->events, events);
543	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	}
544	}	676	}
545		677
546	fdchangecnt = 0;	678	fdchangecnt = 0;
547	}	679	}
548		680
549	void inline_size	681	void inline_size
550	fd_change (EV_P_ int fd)	682	fd_change (EV_P_ int fd, int flags)
551	{	683	{
552	if (expect_false (anfds [fd].reify))	684	unsigned char reify = anfds [fd].reify;
553	return;
554
555	anfds [fd].reify = 1;	685	anfds [fd].reify \|= flags;
556		686
		687	if (expect_true (!reify))
		688	{
557	++fdchangecnt;	689	++fdchangecnt;
558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
559	fdchanges [fdchangecnt - 1] = fd;	691	fdchanges [fdchangecnt - 1] = fd;
		692	}
560	}	693	}
561		694
562	void inline_speed	695	void inline_speed
563	fd_kill (EV_P_ int fd)	696	fd_kill (EV_P_ int fd)
564	{	697	{
…		…
615		748
616	for (fd = 0; fd < anfdmax; ++fd)	749	for (fd = 0; fd < anfdmax; ++fd)
617	if (anfds [fd].events)	750	if (anfds [fd].events)
618	{	751	{
619	anfds [fd].events = 0;	752	anfds [fd].events = 0;
620	fd_change (EV_A_ fd);	753	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
621	}	754	}
622	}	755	}
623		756
624	/*****************************************************************************/	757	/*****************************************************************************/
625		758
626	void inline_speed	759	void inline_speed
627	upheap (WT *heap, int k)	760	upheap (WT *heap, int k)
628	{	761	{
629	WT w = heap [k];	762	WT w = heap [k];
630		763
631	while (k && heap [k >> 1]->at > w->at)	764	while (k)
632	{	765	{
		766	int p = (k - 1) >> 1;
		767
		768	if (heap [p]->at <= w->at)
		769	break;
		770
633	heap [k] = heap [k >> 1];	771	heap [k] = heap [p];
634	((W)heap [k])->active = k + 1;	772	((W)heap [k])->active = k + 1;
635	k >>= 1;	773	k = p;
636	}	774	}
637		775
638	heap [k] = w;	776	heap [k] = w;
639	((W)heap [k])->active = k + 1;	777	((W)heap [k])->active = k + 1;
640
641	}	778	}
642		779
643	void inline_speed	780	void inline_speed
644	downheap (WT *heap, int N, int k)	781	downheap (WT *heap, int N, int k)
645	{	782	{
646	WT w = heap [k];	783	WT w = heap [k];
647		784
648	while (k < (N >> 1))	785	for (;;)
649	{	786	{
650	int j = k << 1;	787	int c = (k << 1) + 1;
651		788
652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	789	if (c >= N)
653	++j;
654
655	if (w->at <= heap [j]->at)
656	break;	790	break;
657		791
		792	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		793	? 1 : 0;
		794
		795	if (w->at <= heap [c]->at)
		796	break;
		797
658	heap [k] = heap [j];	798	heap [k] = heap [c];
659	((W)heap [k])->active = k + 1;	799	((W)heap [k])->active = k + 1;
		800
660	k = j;	801	k = c;
661	}	802	}
662		803
663	heap [k] = w;	804	heap [k] = w;
664	((W)heap [k])->active = k + 1;	805	((W)heap [k])->active = k + 1;
665	}	806	}
…		…
674	/*****************************************************************************/	815	/*****************************************************************************/
675		816
676	typedef struct	817	typedef struct
677	{	818	{
678	WL head;	819	WL head;
679	sig_atomic_t volatile gotsig;	820	EV_ATOMIC_T gotsig;
680	} ANSIG;	821	} ANSIG;
681		822
682	static ANSIG *signals;	823	static ANSIG *signals;
683	static int signalmax;	824	static int signalmax;
684		825
685	static int sigpipe [2];	826	static EV_ATOMIC_T gotsig;
686	static sig_atomic_t volatile gotsig;
687	static ev_io sigev;
688		827
689	void inline_size	828	void inline_size
690	signals_init (ANSIG *base, int count)	829	signals_init (ANSIG *base, int count)
691	{	830	{
692	while (count--)	831	while (count--)
…		…
696		835
697	++base;	836	++base;
698	}	837	}
699	}	838	}
700		839
701	static void	840	/*****************************************************************************/
702	sighandler (int signum)
703	{
704	#if _WIN32
705	signal (signum, sighandler);
706	#endif
707		841
708	signals [signum - 1].gotsig = 1;
709
710	if (!gotsig)
711	{
712	int old_errno = errno;
713	gotsig = 1;
714	write (sigpipe [1], &signum, 1);
715	errno = old_errno;
716	}
717	}
718
719	void noinline
720	ev_feed_signal_event (EV_P_ int signum)
721	{
722	WL w;
723
724	#if EV_MULTIPLICITY
725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
726	#endif
727
728	--signum;
729
730	if (signum < 0 \|\| signum >= signalmax)
731	return;
732
733	signals [signum].gotsig = 0;
734
735	for (w = signals [signum].head; w; w = w->next)
736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
737	}
738
739	static void
740	sigcb (EV_P_ ev_io *iow, int revents)
741	{
742	int signum;
743
744	read (sigpipe [0], &revents, 1);
745	gotsig = 0;
746
747	for (signum = signalmax; signum--; )
748	if (signals [signum].gotsig)
749	ev_feed_signal_event (EV_A_ signum + 1);
750	}
751
752	void inline_size	842	void inline_speed
753	fd_intern (int fd)	843	fd_intern (int fd)
754	{	844	{
755	#ifdef _WIN32	845	#ifdef _WIN32
756	int arg = 1;	846	int arg = 1;
757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	847	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
760	fcntl (fd, F_SETFL, O_NONBLOCK);	850	fcntl (fd, F_SETFL, O_NONBLOCK);
761	#endif	851	#endif
762	}	852	}
763		853
764	static void noinline	854	static void noinline
765	siginit (EV_P)	855	evpipe_init (EV_P)
766	{	856	{
		857	if (!ev_is_active (&pipeev))
		858	{
		859	#if EV_USE_EVENTFD
		860	if ((evfd = eventfd (0, 0)) >= 0)
		861	{
		862	evpipe [0] = -1;
		863	fd_intern (evfd);
		864	ev_io_set (&pipeev, evfd, EV_READ);
		865	}
		866	else
		867	#endif
		868	{
		869	while (pipe (evpipe))
		870	syserr ("(libev) error creating signal/async pipe");
		871
767	fd_intern (sigpipe [0]);	872	fd_intern (evpipe [0]);
768	fd_intern (sigpipe [1]);	873	fd_intern (evpipe [1]);
		874	ev_io_set (&pipeev, evpipe [0], EV_READ);
		875	}
769		876
770	ev_io_set (&sigev, sigpipe [0], EV_READ);
771	ev_io_start (EV_A_ &sigev);	877	ev_io_start (EV_A_ &pipeev);
772	ev_unref (EV_A); /* child watcher should not keep loop alive */	878	ev_unref (EV_A); /* watcher should not keep loop alive */
		879	}
		880	}
		881
		882	void inline_size
		883	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		884	{
		885	if (!*flag)
		886	{
		887	int old_errno = errno; /* save errno because write might clobber it */
		888
		889	*flag = 1;
		890
		891	#if EV_USE_EVENTFD
		892	if (evfd >= 0)
		893	{
		894	uint64_t counter = 1;
		895	write (evfd, &counter, sizeof (uint64_t));
		896	}
		897	else
		898	#endif
		899	write (evpipe [1], &old_errno, 1);
		900
		901	errno = old_errno;
		902	}
		903	}
		904
		905	static void
		906	pipecb (EV_P_ ev_io *iow, int revents)
		907	{
		908	#if EV_USE_EVENTFD
		909	if (evfd >= 0)
		910	{
		911	uint64_t counter = 1;
		912	read (evfd, &counter, sizeof (uint64_t));
		913	}
		914	else
		915	#endif
		916	{
		917	char dummy;
		918	read (evpipe [0], &dummy, 1);
		919	}
		920
		921	if (gotsig && ev_is_default_loop (EV_A))
		922	{
		923	int signum;
		924	gotsig = 0;
		925
		926	for (signum = signalmax; signum--; )
		927	if (signals [signum].gotsig)
		928	ev_feed_signal_event (EV_A_ signum + 1);
		929	}
		930
		931	#if EV_ASYNC_ENABLE
		932	if (gotasync)
		933	{
		934	int i;
		935	gotasync = 0;
		936
		937	for (i = asynccnt; i--; )
		938	if (asyncs [i]->sent)
		939	{
		940	asyncs [i]->sent = 0;
		941	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		942	}
		943	}
		944	#endif
773	}	945	}
774		946
775	/*****************************************************************************/	947	/*****************************************************************************/
776		948
		949	static void
		950	ev_sighandler (int signum)
		951	{
		952	#if EV_MULTIPLICITY
		953	struct ev_loop *loop = &default_loop_struct;
		954	#endif
		955
		956	#if _WIN32
		957	signal (signum, ev_sighandler);
		958	#endif
		959
		960	signals [signum - 1].gotsig = 1;
		961	evpipe_write (EV_A_ &gotsig);
		962	}
		963
		964	void noinline
		965	ev_feed_signal_event (EV_P_ int signum)
		966	{
		967	WL w;
		968
		969	#if EV_MULTIPLICITY
		970	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		971	#endif
		972
		973	--signum;
		974
		975	if (signum < 0 \|\| signum >= signalmax)
		976	return;
		977
		978	signals [signum].gotsig = 0;
		979
		980	for (w = signals [signum].head; w; w = w->next)
		981	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		982	}
		983
		984	/*****************************************************************************/
		985
777	static ev_child *childs [EV_PID_HASHSIZE];	986	static WL childs [EV_PID_HASHSIZE];
778		987
779	#ifndef _WIN32	988	#ifndef _WIN32
780		989
781	static ev_signal childev;	990	static ev_signal childev;
782		991
		992	#ifndef WIFCONTINUED
		993	# define WIFCONTINUED(status) 0
		994	#endif
		995
783	void inline_speed	996	void inline_speed
784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	997	child_reap (EV_P_ int chain, int pid, int status)
785	{	998	{
786	ev_child *w;	999	ev_child *w;
		1000	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
787		1001
788	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1002	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		1003	{
789	if (w->pid == pid \|\| !w->pid)	1004	if ((w->pid == pid \|\| !w->pid)
		1005	&& (!traced \|\| (w->flags & 1)))
790	{	1006	{
791	ev_priority (w) = ev_priority (sw); /* need to do it now */	1007	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
792	w->rpid = pid;	1008	w->rpid = pid;
793	w->rstatus = status;	1009	w->rstatus = status;
794	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1010	ev_feed_event (EV_A_ (W)w, EV_CHILD);
795	}	1011	}
		1012	}
796	}	1013	}
797		1014
798	#ifndef WCONTINUED	1015	#ifndef WCONTINUED
799	# define WCONTINUED 0	1016	# define WCONTINUED 0
800	#endif	1017	#endif
…		…
809	if (!WCONTINUED	1026	if (!WCONTINUED
810	\|\| errno != EINVAL	1027	\|\| errno != EINVAL
811	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	1028	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
812	return;	1029	return;
813		1030
814	/* make sure we are called again until all childs have been reaped */	1031	/* make sure we are called again until all children have been reaped */
815	/* we need to do it this way so that the callback gets called before we continue */	1032	/* we need to do it this way so that the callback gets called before we continue */
816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1033	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
817		1034
818	child_reap (EV_A_ sw, pid, pid, status);	1035	child_reap (EV_A_ pid, pid, status);
819	if (EV_PID_HASHSIZE > 1)	1036	if (EV_PID_HASHSIZE > 1)
820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1037	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
821	}	1038	}
822		1039
823	#endif	1040	#endif
824		1041
825	/*****************************************************************************/	1042	/*****************************************************************************/
…		…
897	}	1114	}
898		1115
899	unsigned int	1116	unsigned int
900	ev_embeddable_backends (void)	1117	ev_embeddable_backends (void)
901	{	1118	{
902	return EVBACKEND_EPOLL	1119	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
903	\| EVBACKEND_KQUEUE	1120
904	\| EVBACKEND_PORT;	1121	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1122	/* please fix it and tell me how to detect the fix */
		1123	flags &= ~EVBACKEND_EPOLL;
		1124
		1125	return flags;
905	}	1126	}
906		1127
907	unsigned int	1128	unsigned int
908	ev_backend (EV_P)	1129	ev_backend (EV_P)
909	{	1130	{
…		…
912		1133
913	unsigned int	1134	unsigned int
914	ev_loop_count (EV_P)	1135	ev_loop_count (EV_P)
915	{	1136	{
916	return loop_count;	1137	return loop_count;
		1138	}
		1139
		1140	void
		1141	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1142	{
		1143	io_blocktime = interval;
		1144	}
		1145
		1146	void
		1147	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1148	{
		1149	timeout_blocktime = interval;
917	}	1150	}
918		1151
919	static void noinline	1152	static void noinline
920	loop_init (EV_P_ unsigned int flags)	1153	loop_init (EV_P_ unsigned int flags)
921	{	1154	{
…		…
927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1160	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
928	have_monotonic = 1;	1161	have_monotonic = 1;
929	}	1162	}
930	#endif	1163	#endif
931		1164
932	ev_rt_now = ev_time ();	1165	ev_rt_now = ev_time ();
933	mn_now = get_clock ();	1166	mn_now = get_clock ();
934	now_floor = mn_now;	1167	now_floor = mn_now;
935	rtmn_diff = ev_rt_now - mn_now;	1168	rtmn_diff = ev_rt_now - mn_now;
		1169
		1170	io_blocktime = 0.;
		1171	timeout_blocktime = 0.;
		1172	backend = 0;
		1173	backend_fd = -1;
		1174	gotasync = 0;
		1175	#if EV_USE_INOTIFY
		1176	fs_fd = -2;
		1177	#endif
936		1178
937	/* pid check not overridable via env */	1179	/* pid check not overridable via env */
938	#ifndef _WIN32	1180	#ifndef _WIN32
939	if (flags & EVFLAG_FORKCHECK)	1181	if (flags & EVFLAG_FORKCHECK)
940	curpid = getpid ();	1182	curpid = getpid ();
…		…
943	if (!(flags & EVFLAG_NOENV)	1185	if (!(flags & EVFLAG_NOENV)
944	&& !enable_secure ()	1186	&& !enable_secure ()
945	&& getenv ("LIBEV_FLAGS"))	1187	&& getenv ("LIBEV_FLAGS"))
946	flags = atoi (getenv ("LIBEV_FLAGS"));	1188	flags = atoi (getenv ("LIBEV_FLAGS"));
947		1189
948	if (!(flags & 0x0000ffffUL))	1190	if (!(flags & 0x0000ffffU))
949	flags \|= ev_recommended_backends ();	1191	flags \|= ev_recommended_backends ();
950
951	backend = 0;
952	backend_fd = -1;
953	#if EV_USE_INOTIFY
954	fs_fd = -2;
955	#endif
956		1192
957	#if EV_USE_PORT	1193	#if EV_USE_PORT
958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1194	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
959	#endif	1195	#endif
960	#if EV_USE_KQUEUE	1196	#if EV_USE_KQUEUE
…		…
968	#endif	1204	#endif
969	#if EV_USE_SELECT	1205	#if EV_USE_SELECT
970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1206	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
971	#endif	1207	#endif
972		1208
973	ev_init (&sigev, sigcb);	1209	ev_init (&pipeev, pipecb);
974	ev_set_priority (&sigev, EV_MAXPRI);	1210	ev_set_priority (&pipeev, EV_MAXPRI);
975	}	1211	}
976	}	1212	}
977		1213
978	static void noinline	1214	static void noinline
979	loop_destroy (EV_P)	1215	loop_destroy (EV_P)
980	{	1216	{
981	int i;	1217	int i;
		1218
		1219	if (ev_is_active (&pipeev))
		1220	{
		1221	ev_ref (EV_A); /* signal watcher */
		1222	ev_io_stop (EV_A_ &pipeev);
		1223
		1224	#if EV_USE_EVENTFD
		1225	if (evfd >= 0)
		1226	close (evfd);
		1227	#endif
		1228
		1229	if (evpipe [0] >= 0)
		1230	{
		1231	close (evpipe [0]);
		1232	close (evpipe [1]);
		1233	}
		1234	}
982		1235
983	#if EV_USE_INOTIFY	1236	#if EV_USE_INOTIFY
984	if (fs_fd >= 0)	1237	if (fs_fd >= 0)
985	close (fs_fd);	1238	close (fs_fd);
986	#endif	1239	#endif
…		…
1003	#if EV_USE_SELECT	1256	#if EV_USE_SELECT
1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1257	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
1005	#endif	1258	#endif
1006		1259
1007	for (i = NUMPRI; i--; )	1260	for (i = NUMPRI; i--; )
		1261	{
1008	array_free (pending, [i]);	1262	array_free (pending, [i]);
		1263	#if EV_IDLE_ENABLE
		1264	array_free (idle, [i]);
		1265	#endif
		1266	}
		1267
		1268	ev_free (anfds); anfdmax = 0;
1009		1269
1010	/* have to use the microsoft-never-gets-it-right macro */	1270	/* have to use the microsoft-never-gets-it-right macro */
1011	array_free (fdchange, EMPTY0);	1271	array_free (fdchange, EMPTY);
1012	array_free (timer, EMPTY0);	1272	array_free (timer, EMPTY);
1013	#if EV_PERIODIC_ENABLE	1273	#if EV_PERIODIC_ENABLE
1014	array_free (periodic, EMPTY0);	1274	array_free (periodic, EMPTY);
1015	#endif	1275	#endif
		1276	#if EV_FORK_ENABLE
1016	array_free (idle, EMPTY0);	1277	array_free (fork, EMPTY);
		1278	#endif
1017	array_free (prepare, EMPTY0);	1279	array_free (prepare, EMPTY);
1018	array_free (check, EMPTY0);	1280	array_free (check, EMPTY);
		1281	#if EV_ASYNC_ENABLE
		1282	array_free (async, EMPTY);
		1283	#endif
1019		1284
1020	backend = 0;	1285	backend = 0;
1021	}	1286	}
1022		1287
1023	void inline_size infy_fork (EV_P);	1288	void inline_size infy_fork (EV_P);
…		…
1036	#endif	1301	#endif
1037	#if EV_USE_INOTIFY	1302	#if EV_USE_INOTIFY
1038	infy_fork (EV_A);	1303	infy_fork (EV_A);
1039	#endif	1304	#endif
1040		1305
1041	if (ev_is_active (&sigev))	1306	if (ev_is_active (&pipeev))
1042	{	1307	{
1043	/* default loop */	1308	/* this "locks" the handlers against writing to the pipe */
		1309	/* while we modify the fd vars */
		1310	gotsig = 1;
		1311	#if EV_ASYNC_ENABLE
		1312	gotasync = 1;
		1313	#endif
1044		1314
1045	ev_ref (EV_A);	1315	ev_ref (EV_A);
1046	ev_io_stop (EV_A_ &sigev);	1316	ev_io_stop (EV_A_ &pipeev);
		1317
		1318	#if EV_USE_EVENTFD
		1319	if (evfd >= 0)
		1320	close (evfd);
		1321	#endif
		1322
		1323	if (evpipe [0] >= 0)
		1324	{
1047	close (sigpipe [0]);	1325	close (evpipe [0]);
1048	close (sigpipe [1]);	1326	close (evpipe [1]);
		1327	}
1049		1328
1050	while (pipe (sigpipe))
1051	syserr ("(libev) error creating pipe");
1052
1053	siginit (EV_A);	1329	evpipe_init (EV_A);
		1330	/* now iterate over everything, in case we missed something */
		1331	pipecb (EV_A_ &pipeev, EV_READ);
1054	}	1332	}
1055		1333
1056	postfork = 0;	1334	postfork = 0;
1057	}	1335	}
1058		1336
…		…
1080	}	1358	}
1081		1359
1082	void	1360	void
1083	ev_loop_fork (EV_P)	1361	ev_loop_fork (EV_P)
1084	{	1362	{
1085	postfork = 1;	1363	postfork = 1; /* must be in line with ev_default_fork */
1086	}	1364	}
1087		1365
1088	#endif	1366	#endif
1089		1367
1090	#if EV_MULTIPLICITY	1368	#if EV_MULTIPLICITY
…		…
1093	#else	1371	#else
1094	int	1372	int
1095	ev_default_loop (unsigned int flags)	1373	ev_default_loop (unsigned int flags)
1096	#endif	1374	#endif
1097	{	1375	{
1098	if (sigpipe [0] == sigpipe [1])
1099	if (pipe (sigpipe))
1100	return 0;
1101
1102	if (!ev_default_loop_ptr)	1376	if (!ev_default_loop_ptr)
1103	{	1377	{
1104	#if EV_MULTIPLICITY	1378	#if EV_MULTIPLICITY
1105	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1379	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1106	#else	1380	#else
…		…
1109		1383
1110	loop_init (EV_A_ flags);	1384	loop_init (EV_A_ flags);
1111		1385
1112	if (ev_backend (EV_A))	1386	if (ev_backend (EV_A))
1113	{	1387	{
1114	siginit (EV_A);
1115
1116	#ifndef _WIN32	1388	#ifndef _WIN32
1117	ev_signal_init (&childev, childcb, SIGCHLD);	1389	ev_signal_init (&childev, childcb, SIGCHLD);
1118	ev_set_priority (&childev, EV_MAXPRI);	1390	ev_set_priority (&childev, EV_MAXPRI);
1119	ev_signal_start (EV_A_ &childev);	1391	ev_signal_start (EV_A_ &childev);
1120	ev_unref (EV_A); /* child watcher should not keep loop alive */	1392	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1137	#ifndef _WIN32	1409	#ifndef _WIN32
1138	ev_ref (EV_A); /* child watcher */	1410	ev_ref (EV_A); /* child watcher */
1139	ev_signal_stop (EV_A_ &childev);	1411	ev_signal_stop (EV_A_ &childev);
1140	#endif	1412	#endif
1141		1413
1142	ev_ref (EV_A); /* signal watcher */
1143	ev_io_stop (EV_A_ &sigev);
1144
1145	close (sigpipe [0]); sigpipe [0] = 0;
1146	close (sigpipe [1]); sigpipe [1] = 0;
1147
1148	loop_destroy (EV_A);	1414	loop_destroy (EV_A);
1149	}	1415	}
1150		1416
1151	void	1417	void
1152	ev_default_fork (void)	1418	ev_default_fork (void)
…		…
1154	#if EV_MULTIPLICITY	1420	#if EV_MULTIPLICITY
1155	struct ev_loop *loop = ev_default_loop_ptr;	1421	struct ev_loop *loop = ev_default_loop_ptr;
1156	#endif	1422	#endif
1157		1423
1158	if (backend)	1424	if (backend)
1159	postfork = 1;	1425	postfork = 1; /* must be in line with ev_loop_fork */
1160	}	1426	}
1161		1427
1162	/*****************************************************************************/	1428	/*****************************************************************************/
1163		1429
1164	int inline_size	1430	void
1165	any_pending (EV_P)	1431	ev_invoke (EV_P_ void *w, int revents)
1166	{	1432	{
1167	int pri;	1433	EV_CB_INVOKE ((W)w, revents);
1168
1169	for (pri = NUMPRI; pri--; )
1170	if (pendingcnt [pri])
1171	return 1;
1172
1173	return 0;
1174	}	1434	}
1175		1435
1176	void inline_speed	1436	void inline_speed
1177	call_pending (EV_P)	1437	call_pending (EV_P)
1178	{	1438	{
…		…
1196	void inline_size	1456	void inline_size
1197	timers_reify (EV_P)	1457	timers_reify (EV_P)
1198	{	1458	{
1199	while (timercnt && ((WT)timers [0])->at <= mn_now)	1459	while (timercnt && ((WT)timers [0])->at <= mn_now)
1200	{	1460	{
1201	ev_timer *w = timers [0];	1461	ev_timer w = (ev_timer )timers [0];
1202		1462
1203	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1463	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1204		1464
1205	/* first reschedule or stop timer */	1465	/* first reschedule or stop timer */
1206	if (w->repeat)	1466	if (w->repeat)
…		…
1209		1469
1210	((WT)w)->at += w->repeat;	1470	((WT)w)->at += w->repeat;
1211	if (((WT)w)->at < mn_now)	1471	if (((WT)w)->at < mn_now)
1212	((WT)w)->at = mn_now;	1472	((WT)w)->at = mn_now;
1213		1473
1214	downheap ((WT *)timers, timercnt, 0);	1474	downheap (timers, timercnt, 0);
1215	}	1475	}
1216	else	1476	else
1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1477	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1218		1478
1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1479	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1224	void inline_size	1484	void inline_size
1225	periodics_reify (EV_P)	1485	periodics_reify (EV_P)
1226	{	1486	{
1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1487	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1228	{	1488	{
1229	ev_periodic *w = periodics [0];	1489	ev_periodic w = (ev_periodic )periodics [0];
1230		1490
1231	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1491	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1232		1492
1233	/* first reschedule or stop timer */	1493	/* first reschedule or stop timer */
1234	if (w->reschedule_cb)	1494	if (w->reschedule_cb)
1235	{	1495	{
1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1496	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1497	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1238	downheap ((WT *)periodics, periodiccnt, 0);	1498	downheap (periodics, periodiccnt, 0);
1239	}	1499	}
1240	else if (w->interval)	1500	else if (w->interval)
1241	{	1501	{
1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1502	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1503	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1504	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1244	downheap ((WT *)periodics, periodiccnt, 0);	1505	downheap (periodics, periodiccnt, 0);
1245	}	1506	}
1246	else	1507	else
1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1508	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1248		1509
1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1510	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1256	int i;	1517	int i;
1257		1518
1258	/* adjust periodics after time jump */	1519	/* adjust periodics after time jump */
1259	for (i = 0; i < periodiccnt; ++i)	1520	for (i = 0; i < periodiccnt; ++i)
1260	{	1521	{
1261	ev_periodic *w = periodics [i];	1522	ev_periodic w = (ev_periodic )periodics [i];
1262		1523
1263	if (w->reschedule_cb)	1524	if (w->reschedule_cb)
1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1525	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1265	else if (w->interval)	1526	else if (w->interval)
1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1527	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1267	}	1528	}
1268		1529
1269	/* now rebuild the heap */	1530	/* now rebuild the heap */
1270	for (i = periodiccnt >> 1; i--; )	1531	for (i = periodiccnt >> 1; i--; )
1271	downheap ((WT *)periodics, periodiccnt, i);	1532	downheap (periodics, periodiccnt, i);
1272	}	1533	}
1273	#endif	1534	#endif
1274		1535
		1536	#if EV_IDLE_ENABLE
1275	int inline_size	1537	void inline_size
1276	time_update_monotonic (EV_P)	1538	idle_reify (EV_P)
1277	{	1539	{
		1540	if (expect_false (idleall))
		1541	{
		1542	int pri;
		1543
		1544	for (pri = NUMPRI; pri--; )
		1545	{
		1546	if (pendingcnt [pri])
		1547	break;
		1548
		1549	if (idlecnt [pri])
		1550	{
		1551	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1552	break;
		1553	}
		1554	}
		1555	}
		1556	}
		1557	#endif
		1558
		1559	void inline_speed
		1560	time_update (EV_P_ ev_tstamp max_block)
		1561	{
		1562	int i;
		1563
		1564	#if EV_USE_MONOTONIC
		1565	if (expect_true (have_monotonic))
		1566	{
		1567	ev_tstamp odiff = rtmn_diff;
		1568
1278	mn_now = get_clock ();	1569	mn_now = get_clock ();
1279		1570
		1571	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1572	/* interpolate in the meantime */
1280	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1573	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1281	{	1574	{
1282	ev_rt_now = rtmn_diff + mn_now;	1575	ev_rt_now = rtmn_diff + mn_now;
1283	return 0;	1576	return;
1284	}	1577	}
1285	else	1578
1286	{
1287	now_floor = mn_now;	1579	now_floor = mn_now;
1288	ev_rt_now = ev_time ();	1580	ev_rt_now = ev_time ();
1289	return 1;
1290	}
1291	}
1292		1581
1293	void inline_size	1582	/* loop a few times, before making important decisions.
1294	time_update (EV_P)	1583	* on the choice of "4": one iteration isn't enough,
1295	{	1584	* in case we get preempted during the calls to
1296	int i;	1585	* ev_time and get_clock. a second call is almost guaranteed
1297		1586	* to succeed in that case, though. and looping a few more times
1298	#if EV_USE_MONOTONIC	1587	* doesn't hurt either as we only do this on time-jumps or
1299	if (expect_true (have_monotonic))	1588	* in the unlikely event of having been preempted here.
1300	{	1589	*/
1301	if (time_update_monotonic (EV_A))	1590	for (i = 4; --i; )
1302	{	1591	{
1303	ev_tstamp odiff = rtmn_diff;
1304
1305	/* loop a few times, before making important decisions.
1306	* on the choice of "4": one iteration isn't enough,
1307	* in case we get preempted during the calls to
1308	* ev_time and get_clock. a second call is almost guaranteed
1309	* to succeed in that case, though. and looping a few more times
1310	* doesn't hurt either as we only do this on time-jumps or
1311	* in the unlikely event of having been preempted here.
1312	*/
1313	for (i = 4; --i; )
1314	{
1315	rtmn_diff = ev_rt_now - mn_now;	1592	rtmn_diff = ev_rt_now - mn_now;
1316		1593
1317	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1594	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1318	return; /* all is well */	1595	return; /* all is well */
1319		1596
1320	ev_rt_now = ev_time ();	1597	ev_rt_now = ev_time ();
1321	mn_now = get_clock ();	1598	mn_now = get_clock ();
1322	now_floor = mn_now;	1599	now_floor = mn_now;
1323	}	1600	}
1324		1601
1325	# if EV_PERIODIC_ENABLE	1602	# if EV_PERIODIC_ENABLE
1326	periodics_reschedule (EV_A);	1603	periodics_reschedule (EV_A);
1327	# endif	1604	# endif
1328	/* no timer adjustment, as the monotonic clock doesn't jump */	1605	/* no timer adjustment, as the monotonic clock doesn't jump */
1329	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1606	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1330	}
1331	}	1607	}
1332	else	1608	else
1333	#endif	1609	#endif
1334	{	1610	{
1335	ev_rt_now = ev_time ();	1611	ev_rt_now = ev_time ();
1336		1612
1337	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1613	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1338	{	1614	{
1339	#if EV_PERIODIC_ENABLE	1615	#if EV_PERIODIC_ENABLE
1340	periodics_reschedule (EV_A);	1616	periodics_reschedule (EV_A);
1341	#endif	1617	#endif
1342
1343	/* adjust timers. this is easy, as the offset is the same for all of them */	1618	/* adjust timers. this is easy, as the offset is the same for all of them */
1344	for (i = 0; i < timercnt; ++i)	1619	for (i = 0; i < timercnt; ++i)
1345	((WT)timers [i])->at += ev_rt_now - mn_now;	1620	((WT)timers [i])->at += ev_rt_now - mn_now;
1346	}	1621	}
1347		1622
…		…
1364	static int loop_done;	1639	static int loop_done;
1365		1640
1366	void	1641	void
1367	ev_loop (EV_P_ int flags)	1642	ev_loop (EV_P_ int flags)
1368	{	1643	{
1369	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1644	loop_done = EVUNLOOP_CANCEL;
1370	? EVUNLOOP_ONE
1371	: EVUNLOOP_CANCEL;
1372		1645
1373	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	1646	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
1374		1647
1375	do	1648	do
1376	{	1649	{
…		…
1391	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1664	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1392	call_pending (EV_A);	1665	call_pending (EV_A);
1393	}	1666	}
1394	#endif	1667	#endif
1395		1668
1396	/* queue check watchers (and execute them) */	1669	/* queue prepare watchers (and execute them) */
1397	if (expect_false (preparecnt))	1670	if (expect_false (preparecnt))
1398	{	1671	{
1399	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1672	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1400	call_pending (EV_A);	1673	call_pending (EV_A);
1401	}	1674	}
…		…
1410	/* update fd-related kernel structures */	1683	/* update fd-related kernel structures */
1411	fd_reify (EV_A);	1684	fd_reify (EV_A);
1412		1685
1413	/* calculate blocking time */	1686	/* calculate blocking time */
1414	{	1687	{
1415	ev_tstamp block;	1688	ev_tstamp waittime = 0.;
		1689	ev_tstamp sleeptime = 0.;
1416		1690
1417	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idlecnt \|\| !activecnt))	1691	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1418	block = 0.; /* do not block at all */
1419	else
1420	{	1692	{
1421	/* update time to cancel out callback processing overhead */	1693	/* update time to cancel out callback processing overhead */
1422	#if EV_USE_MONOTONIC
1423	if (expect_true (have_monotonic))
1424	time_update_monotonic (EV_A);	1694	time_update (EV_A_ 1e100);
1425	else
1426	#endif
1427	{
1428	ev_rt_now = ev_time ();
1429	mn_now = ev_rt_now;
1430	}
1431		1695
1432	block = MAX_BLOCKTIME;	1696	waittime = MAX_BLOCKTIME;
1433		1697
1434	if (timercnt)	1698	if (timercnt)
1435	{	1699	{
1436	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1700	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1437	if (block > to) block = to;	1701	if (waittime > to) waittime = to;
1438	}	1702	}
1439		1703
1440	#if EV_PERIODIC_ENABLE	1704	#if EV_PERIODIC_ENABLE
1441	if (periodiccnt)	1705	if (periodiccnt)
1442	{	1706	{
1443	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1707	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1444	if (block > to) block = to;	1708	if (waittime > to) waittime = to;
1445	}	1709	}
1446	#endif	1710	#endif
1447		1711
1448	if (expect_false (block < 0.)) block = 0.;	1712	if (expect_false (waittime < timeout_blocktime))
		1713	waittime = timeout_blocktime;
		1714
		1715	sleeptime = waittime - backend_fudge;
		1716
		1717	if (expect_true (sleeptime > io_blocktime))
		1718	sleeptime = io_blocktime;
		1719
		1720	if (sleeptime)
		1721	{
		1722	ev_sleep (sleeptime);
		1723	waittime -= sleeptime;
		1724	}
1449	}	1725	}
1450		1726
1451	++loop_count;	1727	++loop_count;
1452	backend_poll (EV_A_ block);	1728	backend_poll (EV_A_ waittime);
		1729
		1730	/* update ev_rt_now, do magic */
		1731	time_update (EV_A_ waittime + sleeptime);
1453	}	1732	}
1454
1455	/* update ev_rt_now, do magic */
1456	time_update (EV_A);
1457		1733
1458	/* queue pending timers and reschedule them */	1734	/* queue pending timers and reschedule them */
1459	timers_reify (EV_A); /* relative timers called last */	1735	timers_reify (EV_A); /* relative timers called last */
1460	#if EV_PERIODIC_ENABLE	1736	#if EV_PERIODIC_ENABLE
1461	periodics_reify (EV_A); /* absolute timers called first */	1737	periodics_reify (EV_A); /* absolute timers called first */
1462	#endif	1738	#endif
1463		1739
		1740	#if EV_IDLE_ENABLE
1464	/* queue idle watchers unless other events are pending */	1741	/* queue idle watchers unless other events are pending */
1465	if (idlecnt && !any_pending (EV_A))	1742	idle_reify (EV_A);
1466	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1743	#endif
1467		1744
1468	/* queue check watchers, to be executed first */	1745	/* queue check watchers, to be executed first */
1469	if (expect_false (checkcnt))	1746	if (expect_false (checkcnt))
1470	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1747	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1471		1748
1472	call_pending (EV_A);	1749	call_pending (EV_A);
1473
1474	}	1750	}
1475	while (expect_true (activecnt && !loop_done));	1751	while (expect_true (
		1752	activecnt
		1753	&& !loop_done
		1754	&& !(flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK))
		1755	));
1476		1756
1477	if (loop_done == EVUNLOOP_ONE)	1757	if (loop_done == EVUNLOOP_ONE)
1478	loop_done = EVUNLOOP_CANCEL;	1758	loop_done = EVUNLOOP_CANCEL;
1479	}	1759	}
1480		1760
…		…
1507	head = &(*head)->next;	1787	head = &(*head)->next;
1508	}	1788	}
1509	}	1789	}
1510		1790
1511	void inline_speed	1791	void inline_speed
1512	ev_clear_pending (EV_P_ W w)	1792	clear_pending (EV_P_ W w)
1513	{	1793	{
1514	if (w->pending)	1794	if (w->pending)
1515	{	1795	{
1516	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1796	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1517	w->pending = 0;	1797	w->pending = 0;
1518	}	1798	}
1519	}	1799	}
1520		1800
		1801	int
		1802	ev_clear_pending (EV_P_ void *w)
		1803	{
		1804	W w_ = (W)w;
		1805	int pending = w_->pending;
		1806
		1807	if (expect_true (pending))
		1808	{
		1809	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1810	w_->pending = 0;
		1811	p->w = 0;
		1812	return p->events;
		1813	}
		1814	else
		1815	return 0;
		1816	}
		1817
		1818	void inline_size
		1819	pri_adjust (EV_P_ W w)
		1820	{
		1821	int pri = w->priority;
		1822	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1823	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1824	w->priority = pri;
		1825	}
		1826
1521	void inline_speed	1827	void inline_speed
1522	ev_start (EV_P_ W w, int active)	1828	ev_start (EV_P_ W w, int active)
1523	{	1829	{
1524	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1830	pri_adjust (EV_A_ w);
1525	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1526
1527	w->active = active;	1831	w->active = active;
1528	ev_ref (EV_A);	1832	ev_ref (EV_A);
1529	}	1833	}
1530		1834
1531	void inline_size	1835	void inline_size
…		…
1535	w->active = 0;	1839	w->active = 0;
1536	}	1840	}
1537		1841
1538	/*****************************************************************************/	1842	/*****************************************************************************/
1539		1843
1540	void	1844	void noinline
1541	ev_io_start (EV_P_ ev_io *w)	1845	ev_io_start (EV_P_ ev_io *w)
1542	{	1846	{
1543	int fd = w->fd;	1847	int fd = w->fd;
1544		1848
1545	if (expect_false (ev_is_active (w)))	1849	if (expect_false (ev_is_active (w)))
…		…
1547		1851
1548	assert (("ev_io_start called with negative fd", fd >= 0));	1852	assert (("ev_io_start called with negative fd", fd >= 0));
1549		1853
1550	ev_start (EV_A_ (W)w, 1);	1854	ev_start (EV_A_ (W)w, 1);
1551	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1855	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1552	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1856	wlist_add (&anfds[fd].head, (WL)w);
1553		1857
1554	fd_change (EV_A_ fd);	1858	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1859	w->events &= ~EV_IOFDSET;
1555	}	1860	}
1556		1861
1557	void	1862	void noinline
1558	ev_io_stop (EV_P_ ev_io *w)	1863	ev_io_stop (EV_P_ ev_io *w)
1559	{	1864	{
1560	ev_clear_pending (EV_A_ (W)w);	1865	clear_pending (EV_A_ (W)w);
1561	if (expect_false (!ev_is_active (w)))	1866	if (expect_false (!ev_is_active (w)))
1562	return;	1867	return;
1563		1868
1564	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1869	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1565		1870
1566	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1871	wlist_del (&anfds[w->fd].head, (WL)w);
1567	ev_stop (EV_A_ (W)w);	1872	ev_stop (EV_A_ (W)w);
1568		1873
1569	fd_change (EV_A_ w->fd);	1874	fd_change (EV_A_ w->fd, 1);
1570	}	1875	}
1571		1876
1572	void	1877	void noinline
1573	ev_timer_start (EV_P_ ev_timer *w)	1878	ev_timer_start (EV_P_ ev_timer *w)
1574	{	1879	{
1575	if (expect_false (ev_is_active (w)))	1880	if (expect_false (ev_is_active (w)))
1576	return;	1881	return;
1577		1882
1578	((WT)w)->at += mn_now;	1883	((WT)w)->at += mn_now;
1579		1884
1580	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1885	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1581		1886
1582	ev_start (EV_A_ (W)w, ++timercnt);	1887	ev_start (EV_A_ (W)w, ++timercnt);
1583	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1888	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1584	timers [timercnt - 1] = w;	1889	timers [timercnt - 1] = (WT)w;
1585	upheap ((WT *)timers, timercnt - 1);	1890	upheap (timers, timercnt - 1);
1586		1891
1587	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1892	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1588	}	1893	}
1589		1894
1590	void	1895	void noinline
1591	ev_timer_stop (EV_P_ ev_timer *w)	1896	ev_timer_stop (EV_P_ ev_timer *w)
1592	{	1897	{
1593	ev_clear_pending (EV_A_ (W)w);	1898	clear_pending (EV_A_ (W)w);
1594	if (expect_false (!ev_is_active (w)))	1899	if (expect_false (!ev_is_active (w)))
1595	return;	1900	return;
1596		1901
1597	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1902	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1598		1903
1599	{	1904	{
1600	int active = ((W)w)->active;	1905	int active = ((W)w)->active;
1601		1906
1602	if (expect_true (--active < --timercnt))	1907	if (expect_true (--active < --timercnt))
1603	{	1908	{
1604	timers [active] = timers [timercnt];	1909	timers [active] = timers [timercnt];
1605	adjustheap ((WT *)timers, timercnt, active);	1910	adjustheap (timers, timercnt, active);
1606	}	1911	}
1607	}	1912	}
1608		1913
1609	((WT)w)->at -= mn_now;	1914	((WT)w)->at -= mn_now;
1610		1915
1611	ev_stop (EV_A_ (W)w);	1916	ev_stop (EV_A_ (W)w);
1612	}	1917	}
1613		1918
1614	void	1919	void noinline
1615	ev_timer_again (EV_P_ ev_timer *w)	1920	ev_timer_again (EV_P_ ev_timer *w)
1616	{	1921	{
1617	if (ev_is_active (w))	1922	if (ev_is_active (w))
1618	{	1923	{
1619	if (w->repeat)	1924	if (w->repeat)
1620	{	1925	{
1621	((WT)w)->at = mn_now + w->repeat;	1926	((WT)w)->at = mn_now + w->repeat;
1622	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1927	adjustheap (timers, timercnt, ((W)w)->active - 1);
1623	}	1928	}
1624	else	1929	else
1625	ev_timer_stop (EV_A_ w);	1930	ev_timer_stop (EV_A_ w);
1626	}	1931	}
1627	else if (w->repeat)	1932	else if (w->repeat)
…		…
1630	ev_timer_start (EV_A_ w);	1935	ev_timer_start (EV_A_ w);
1631	}	1936	}
1632	}	1937	}
1633		1938
1634	#if EV_PERIODIC_ENABLE	1939	#if EV_PERIODIC_ENABLE
1635	void	1940	void noinline
1636	ev_periodic_start (EV_P_ ev_periodic *w)	1941	ev_periodic_start (EV_P_ ev_periodic *w)
1637	{	1942	{
1638	if (expect_false (ev_is_active (w)))	1943	if (expect_false (ev_is_active (w)))
1639	return;	1944	return;
1640		1945
…		…
1642	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1947	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1643	else if (w->interval)	1948	else if (w->interval)
1644	{	1949	{
1645	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1950	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1646	/* this formula differs from the one in periodic_reify because we do not always round up */	1951	/* this formula differs from the one in periodic_reify because we do not always round up */
1647	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1952	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1648	}	1953	}
		1954	else
		1955	((WT)w)->at = w->offset;
1649		1956
1650	ev_start (EV_A_ (W)w, ++periodiccnt);	1957	ev_start (EV_A_ (W)w, ++periodiccnt);
1651	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1958	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1652	periodics [periodiccnt - 1] = w;	1959	periodics [periodiccnt - 1] = (WT)w;
1653	upheap ((WT *)periodics, periodiccnt - 1);	1960	upheap (periodics, periodiccnt - 1);
1654		1961
1655	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1962	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1656	}	1963	}
1657		1964
1658	void	1965	void noinline
1659	ev_periodic_stop (EV_P_ ev_periodic *w)	1966	ev_periodic_stop (EV_P_ ev_periodic *w)
1660	{	1967	{
1661	ev_clear_pending (EV_A_ (W)w);	1968	clear_pending (EV_A_ (W)w);
1662	if (expect_false (!ev_is_active (w)))	1969	if (expect_false (!ev_is_active (w)))
1663	return;	1970	return;
1664		1971
1665	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1972	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1666		1973
1667	{	1974	{
1668	int active = ((W)w)->active;	1975	int active = ((W)w)->active;
1669		1976
1670	if (expect_true (--active < --periodiccnt))	1977	if (expect_true (--active < --periodiccnt))
1671	{	1978	{
1672	periodics [active] = periodics [periodiccnt];	1979	periodics [active] = periodics [periodiccnt];
1673	adjustheap ((WT *)periodics, periodiccnt, active);	1980	adjustheap (periodics, periodiccnt, active);
1674	}	1981	}
1675	}	1982	}
1676		1983
1677	ev_stop (EV_A_ (W)w);	1984	ev_stop (EV_A_ (W)w);
1678	}	1985	}
1679		1986
1680	void	1987	void noinline
1681	ev_periodic_again (EV_P_ ev_periodic *w)	1988	ev_periodic_again (EV_P_ ev_periodic *w)
1682	{	1989	{
1683	/* TODO: use adjustheap and recalculation */	1990	/* TODO: use adjustheap and recalculation */
1684	ev_periodic_stop (EV_A_ w);	1991	ev_periodic_stop (EV_A_ w);
1685	ev_periodic_start (EV_A_ w);	1992	ev_periodic_start (EV_A_ w);
…		…
1688		1995
1689	#ifndef SA_RESTART	1996	#ifndef SA_RESTART
1690	# define SA_RESTART 0	1997	# define SA_RESTART 0
1691	#endif	1998	#endif
1692		1999
1693	void	2000	void noinline
1694	ev_signal_start (EV_P_ ev_signal *w)	2001	ev_signal_start (EV_P_ ev_signal *w)
1695	{	2002	{
1696	#if EV_MULTIPLICITY	2003	#if EV_MULTIPLICITY
1697	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2004	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1698	#endif	2005	#endif
1699	if (expect_false (ev_is_active (w)))	2006	if (expect_false (ev_is_active (w)))
1700	return;	2007	return;
1701		2008
1702	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2009	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1703		2010
		2011	evpipe_init (EV_A);
		2012
		2013	{
		2014	#ifndef _WIN32
		2015	sigset_t full, prev;
		2016	sigfillset (&full);
		2017	sigprocmask (SIG_SETMASK, &full, &prev);
		2018	#endif
		2019
		2020	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		2021
		2022	#ifndef _WIN32
		2023	sigprocmask (SIG_SETMASK, &prev, 0);
		2024	#endif
		2025	}
		2026
1704	ev_start (EV_A_ (W)w, 1);	2027	ev_start (EV_A_ (W)w, 1);
1705	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1706	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2028	wlist_add (&signals [w->signum - 1].head, (WL)w);
1707		2029
1708	if (!((WL)w)->next)	2030	if (!((WL)w)->next)
1709	{	2031	{
1710	#if _WIN32	2032	#if _WIN32
1711	signal (w->signum, sighandler);	2033	signal (w->signum, ev_sighandler);
1712	#else	2034	#else
1713	struct sigaction sa;	2035	struct sigaction sa;
1714	sa.sa_handler = sighandler;	2036	sa.sa_handler = ev_sighandler;
1715	sigfillset (&sa.sa_mask);	2037	sigfillset (&sa.sa_mask);
1716	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2038	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1717	sigaction (w->signum, &sa, 0);	2039	sigaction (w->signum, &sa, 0);
1718	#endif	2040	#endif
1719	}	2041	}
1720	}	2042	}
1721		2043
1722	void	2044	void noinline
1723	ev_signal_stop (EV_P_ ev_signal *w)	2045	ev_signal_stop (EV_P_ ev_signal *w)
1724	{	2046	{
1725	ev_clear_pending (EV_A_ (W)w);	2047	clear_pending (EV_A_ (W)w);
1726	if (expect_false (!ev_is_active (w)))	2048	if (expect_false (!ev_is_active (w)))
1727	return;	2049	return;
1728		2050
1729	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2051	wlist_del (&signals [w->signum - 1].head, (WL)w);
1730	ev_stop (EV_A_ (W)w);	2052	ev_stop (EV_A_ (W)w);
1731		2053
1732	if (!signals [w->signum - 1].head)	2054	if (!signals [w->signum - 1].head)
1733	signal (w->signum, SIG_DFL);	2055	signal (w->signum, SIG_DFL);
1734	}	2056	}
…		…
1741	#endif	2063	#endif
1742	if (expect_false (ev_is_active (w)))	2064	if (expect_false (ev_is_active (w)))
1743	return;	2065	return;
1744		2066
1745	ev_start (EV_A_ (W)w, 1);	2067	ev_start (EV_A_ (W)w, 1);
1746	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2068	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1747	}	2069	}
1748		2070
1749	void	2071	void
1750	ev_child_stop (EV_P_ ev_child *w)	2072	ev_child_stop (EV_P_ ev_child *w)
1751	{	2073	{
1752	ev_clear_pending (EV_A_ (W)w);	2074	clear_pending (EV_A_ (W)w);
1753	if (expect_false (!ev_is_active (w)))	2075	if (expect_false (!ev_is_active (w)))
1754	return;	2076	return;
1755		2077
1756	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2078	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1757	ev_stop (EV_A_ (W)w);	2079	ev_stop (EV_A_ (W)w);
1758	}	2080	}
1759		2081
1760	#if EV_STAT_ENABLE	2082	#if EV_STAT_ENABLE
1761		2083
…		…
1993	}	2315	}
1994		2316
1995	void	2317	void
1996	ev_stat_stop (EV_P_ ev_stat *w)	2318	ev_stat_stop (EV_P_ ev_stat *w)
1997	{	2319	{
1998	ev_clear_pending (EV_A_ (W)w);	2320	clear_pending (EV_A_ (W)w);
1999	if (expect_false (!ev_is_active (w)))	2321	if (expect_false (!ev_is_active (w)))
2000	return;	2322	return;
2001		2323
2002	#if EV_USE_INOTIFY	2324	#if EV_USE_INOTIFY
2003	infy_del (EV_A_ w);	2325	infy_del (EV_A_ w);
…		…
2006		2328
2007	ev_stop (EV_A_ (W)w);	2329	ev_stop (EV_A_ (W)w);
2008	}	2330	}
2009	#endif	2331	#endif
2010		2332
		2333	#if EV_IDLE_ENABLE
2011	void	2334	void
2012	ev_idle_start (EV_P_ ev_idle *w)	2335	ev_idle_start (EV_P_ ev_idle *w)
2013	{	2336	{
2014	if (expect_false (ev_is_active (w)))	2337	if (expect_false (ev_is_active (w)))
2015	return;	2338	return;
2016		2339
		2340	pri_adjust (EV_A_ (W)w);
		2341
		2342	{
		2343	int active = ++idlecnt [ABSPRI (w)];
		2344
		2345	++idleall;
2017	ev_start (EV_A_ (W)w, ++idlecnt);	2346	ev_start (EV_A_ (W)w, active);
		2347
2018	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2348	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2019	idles [idlecnt - 1] = w;	2349	idles [ABSPRI (w)][active - 1] = w;
		2350	}
2020	}	2351	}
2021		2352
2022	void	2353	void
2023	ev_idle_stop (EV_P_ ev_idle *w)	2354	ev_idle_stop (EV_P_ ev_idle *w)
2024	{	2355	{
2025	ev_clear_pending (EV_A_ (W)w);	2356	clear_pending (EV_A_ (W)w);
2026	if (expect_false (!ev_is_active (w)))	2357	if (expect_false (!ev_is_active (w)))
2027	return;	2358	return;
2028		2359
2029	{	2360	{
2030	int active = ((W)w)->active;	2361	int active = ((W)w)->active;
2031	idles [active - 1] = idles [--idlecnt];	2362
		2363	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2032	((W)idles [active - 1])->active = active;	2364	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2365
		2366	ev_stop (EV_A_ (W)w);
		2367	--idleall;
2033	}	2368	}
2034
2035	ev_stop (EV_A_ (W)w);
2036	}	2369	}
		2370	#endif
2037		2371
2038	void	2372	void
2039	ev_prepare_start (EV_P_ ev_prepare *w)	2373	ev_prepare_start (EV_P_ ev_prepare *w)
2040	{	2374	{
2041	if (expect_false (ev_is_active (w)))	2375	if (expect_false (ev_is_active (w)))
…		…
2047	}	2381	}
2048		2382
2049	void	2383	void
2050	ev_prepare_stop (EV_P_ ev_prepare *w)	2384	ev_prepare_stop (EV_P_ ev_prepare *w)
2051	{	2385	{
2052	ev_clear_pending (EV_A_ (W)w);	2386	clear_pending (EV_A_ (W)w);
2053	if (expect_false (!ev_is_active (w)))	2387	if (expect_false (!ev_is_active (w)))
2054	return;	2388	return;
2055		2389
2056	{	2390	{
2057	int active = ((W)w)->active;	2391	int active = ((W)w)->active;
…		…
2074	}	2408	}
2075		2409
2076	void	2410	void
2077	ev_check_stop (EV_P_ ev_check *w)	2411	ev_check_stop (EV_P_ ev_check *w)
2078	{	2412	{
2079	ev_clear_pending (EV_A_ (W)w);	2413	clear_pending (EV_A_ (W)w);
2080	if (expect_false (!ev_is_active (w)))	2414	if (expect_false (!ev_is_active (w)))
2081	return;	2415	return;
2082		2416
2083	{	2417	{
2084	int active = ((W)w)->active;	2418	int active = ((W)w)->active;
…		…
2091		2425
2092	#if EV_EMBED_ENABLE	2426	#if EV_EMBED_ENABLE
2093	void noinline	2427	void noinline
2094	ev_embed_sweep (EV_P_ ev_embed *w)	2428	ev_embed_sweep (EV_P_ ev_embed *w)
2095	{	2429	{
2096	ev_loop (w->loop, EVLOOP_NONBLOCK);	2430	ev_loop (w->other, EVLOOP_NONBLOCK);
2097	}	2431	}
2098		2432
2099	static void	2433	static void
2100	embed_cb (EV_P_ ev_io *io, int revents)	2434	embed_io_cb (EV_P_ ev_io *io, int revents)
2101	{	2435	{
2102	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2436	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2103		2437
2104	if (ev_cb (w))	2438	if (ev_cb (w))
2105	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2439	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2106	else	2440	else
2107	ev_embed_sweep (loop, w);	2441	ev_loop (w->other, EVLOOP_NONBLOCK);
2108	}	2442	}
		2443
		2444	static void
		2445	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2446	{
		2447	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2448
		2449	{
		2450	struct ev_loop *loop = w->other;
		2451
		2452	while (fdchangecnt)
		2453	{
		2454	fd_reify (EV_A);
		2455	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2456	}
		2457	}
		2458	}
		2459
		2460	#if 0
		2461	static void
		2462	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2463	{
		2464	ev_idle_stop (EV_A_ idle);
		2465	}
		2466	#endif
2109		2467
2110	void	2468	void
2111	ev_embed_start (EV_P_ ev_embed *w)	2469	ev_embed_start (EV_P_ ev_embed *w)
2112	{	2470	{
2113	if (expect_false (ev_is_active (w)))	2471	if (expect_false (ev_is_active (w)))
2114	return;	2472	return;
2115		2473
2116	{	2474	{
2117	struct ev_loop *loop = w->loop;	2475	struct ev_loop *loop = w->other;
2118	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2476	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2119	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2477	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2120	}	2478	}
2121		2479
2122	ev_set_priority (&w->io, ev_priority (w));	2480	ev_set_priority (&w->io, ev_priority (w));
2123	ev_io_start (EV_A_ &w->io);	2481	ev_io_start (EV_A_ &w->io);
2124		2482
		2483	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2484	ev_set_priority (&w->prepare, EV_MINPRI);
		2485	ev_prepare_start (EV_A_ &w->prepare);
		2486
		2487	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2488
2125	ev_start (EV_A_ (W)w, 1);	2489	ev_start (EV_A_ (W)w, 1);
2126	}	2490	}
2127		2491
2128	void	2492	void
2129	ev_embed_stop (EV_P_ ev_embed *w)	2493	ev_embed_stop (EV_P_ ev_embed *w)
2130	{	2494	{
2131	ev_clear_pending (EV_A_ (W)w);	2495	clear_pending (EV_A_ (W)w);
2132	if (expect_false (!ev_is_active (w)))	2496	if (expect_false (!ev_is_active (w)))
2133	return;	2497	return;
2134		2498
2135	ev_io_stop (EV_A_ &w->io);	2499	ev_io_stop (EV_A_ &w->io);
		2500	ev_prepare_stop (EV_A_ &w->prepare);
2136		2501
2137	ev_stop (EV_A_ (W)w);	2502	ev_stop (EV_A_ (W)w);
2138	}	2503	}
2139	#endif	2504	#endif
2140		2505
…		…
2151	}	2516	}
2152		2517
2153	void	2518	void
2154	ev_fork_stop (EV_P_ ev_fork *w)	2519	ev_fork_stop (EV_P_ ev_fork *w)
2155	{	2520	{
2156	ev_clear_pending (EV_A_ (W)w);	2521	clear_pending (EV_A_ (W)w);
2157	if (expect_false (!ev_is_active (w)))	2522	if (expect_false (!ev_is_active (w)))
2158	return;	2523	return;
2159		2524
2160	{	2525	{
2161	int active = ((W)w)->active;	2526	int active = ((W)w)->active;
…		…
2165		2530
2166	ev_stop (EV_A_ (W)w);	2531	ev_stop (EV_A_ (W)w);
2167	}	2532	}
2168	#endif	2533	#endif
2169		2534
		2535	#if EV_ASYNC_ENABLE
		2536	void
		2537	ev_async_start (EV_P_ ev_async *w)
		2538	{
		2539	if (expect_false (ev_is_active (w)))
		2540	return;
		2541
		2542	evpipe_init (EV_A);
		2543
		2544	ev_start (EV_A_ (W)w, ++asynccnt);
		2545	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2546	asyncs [asynccnt - 1] = w;
		2547	}
		2548
		2549	void
		2550	ev_async_stop (EV_P_ ev_async *w)
		2551	{
		2552	clear_pending (EV_A_ (W)w);
		2553	if (expect_false (!ev_is_active (w)))
		2554	return;
		2555
		2556	{
		2557	int active = ((W)w)->active;
		2558	asyncs [active - 1] = asyncs [--asynccnt];
		2559	((W)asyncs [active - 1])->active = active;
		2560	}
		2561
		2562	ev_stop (EV_A_ (W)w);
		2563	}
		2564
		2565	void
		2566	ev_async_send (EV_P_ ev_async *w)
		2567	{
		2568	w->sent = 1;
		2569	evpipe_write (EV_A_ &gotasync);
		2570	}
		2571	#endif
		2572
2170	/*****************************************************************************/	2573	/*****************************************************************************/
2171		2574
2172	struct ev_once	2575	struct ev_once
2173	{	2576	{
2174	ev_io io;	2577	ev_io io;
…		…
2229	ev_timer_set (&once->to, timeout, 0.);	2632	ev_timer_set (&once->to, timeout, 0.);
2230	ev_timer_start (EV_A_ &once->to);	2633	ev_timer_start (EV_A_ &once->to);
2231	}	2634	}
2232	}	2635	}
2233		2636
		2637	#if EV_MULTIPLICITY
		2638	#include "ev_wrap.h"
		2639	#endif
		2640
2234	#ifdef __cplusplus	2641	#ifdef __cplusplus
2235	}	2642	}
2236	#endif	2643	#endif
2237		2644

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Comparing libev/ev.c (file contents): Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs. Revision 1.225 by root, Wed Apr 16 01:37:14 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.163 by root, Wed Dec 5 13:54:36 2007 UTC vs.
Revision 1.225 by root, Wed Apr 16 01:37:14 2008 UTC