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

Comparing libev/ev.c (file contents):
Revision 1.154 by root, Wed Nov 28 11:53:37 2007 UTC vs.
Revision 1.216 by root, Sat Mar 8 07:04:55 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
51	# ifndef EV_USE_MONOTONIC	59	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	60	# define EV_USE_MONOTONIC 0
53	# endif	61	# endif
54	# ifndef EV_USE_REALTIME	62	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	63	# define EV_USE_REALTIME 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_NANOSLEEP
		68	# if HAVE_NANOSLEEP
		69	# define EV_USE_NANOSLEEP 1
		70	# else
		71	# define EV_USE_NANOSLEEP 0
56	# endif	72	# endif
57	# endif	73	# endif
58		74
59	# ifndef EV_USE_SELECT	75	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	76	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
146		162
147	#ifndef EV_USE_REALTIME	163	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	164	# define EV_USE_REALTIME 0
149	#endif	165	#endif
150		166
		167	#ifndef EV_USE_NANOSLEEP
		168	# define EV_USE_NANOSLEEP 0
		169	#endif
		170
151	#ifndef EV_USE_SELECT	171	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	172	# define EV_USE_SELECT 1
153	#endif	173	#endif
154		174
155	#ifndef EV_USE_POLL	175	#ifndef EV_USE_POLL
…		…
202	#ifndef CLOCK_REALTIME	222	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	223	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	224	# define EV_USE_REALTIME 0
205	#endif	225	#endif
206		226
		227	#if !EV_STAT_ENABLE
		228	# undef EV_USE_INOTIFY
		229	# define EV_USE_INOTIFY 0
		230	#endif
		231
		232	#if !EV_USE_NANOSLEEP
		233	# ifndef _WIN32
		234	# include <sys/select.h>
		235	# endif
		236	#endif
		237
		238	#if EV_USE_INOTIFY
		239	# include <sys/inotify.h>
		240	#endif
		241
207	#if EV_SELECT_IS_WINSOCKET	242	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	243	# include <winsock.h>
209	#endif	244	#endif
210		245
211	#if !EV_STAT_ENABLE
212	# define EV_USE_INOTIFY 0
213	#endif
214
215	#if EV_USE_INOTIFY
216	# include <sys/inotify.h>
217	#endif
218
219	/**/	246	/**/
		247
		248	/*
		249	* This is used to avoid floating point rounding problems.
		250	* It is added to ev_rt_now when scheduling periodics
		251	* to ensure progress, time-wise, even when rounding
		252	* errors are against us.
		253	* This value is good at least till the year 4000.
		254	* Better solutions welcome.
		255	*/
		256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
220		257
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	258	#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) */	259	#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 */	260	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
224		261
225	#if __GNUC__ >= 3	262	#if __GNUC__ >= 4
226	# define expect(expr,value) __builtin_expect ((expr),(value))	263	# 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))	264	# 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	265	#else
236	# define expect(expr,value) (expr)	266	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	267	# define noinline
		268	# if __STDC_VERSION__ < 199901L
		269	# define inline
		270	# endif
240	#endif	271	#endif
241		272
242	#define expect_false(expr) expect ((expr) != 0, 0)	273	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	274	#define expect_true(expr) expect ((expr) != 0, 1)
		275	#define inline_size static inline
		276
		277	#if EV_MINIMAL
		278	# define inline_speed static noinline
		279	#else
		280	# define inline_speed static inline
		281	#endif
244		282
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		285
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	286	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	287	#define EMPTY2(a,b) /* used to suppress some warnings */
250		288
251	typedef ev_watcher *W;	289	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	290	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	291	typedef ev_watcher_time *WT;
254		292
		293	#if EV_USE_MONOTONIC
		294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		295	/* giving it a reasonably high chance of working on typical architetcures */
255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	296	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		297	#endif
256		298
257	#ifdef _WIN32	299	#ifdef _WIN32
258	# include "ev_win32.c"	300	# include "ev_win32.c"
259	#endif	301	#endif
260		302
…		…
281	perror (msg);	323	perror (msg);
282	abort ();	324	abort ();
283	}	325	}
284	}	326	}
285		327
286	static void (alloc)(void *ptr, size_t size) = realloc;	328	static void (alloc)(void *ptr, long size);
287		329
288	void	330	void
289	ev_set_allocator (void (cb)(void *ptr, size_t size))	331	ev_set_allocator (void (cb)(void *ptr, long size))
290	{	332	{
291	alloc = cb;	333	alloc = cb;
292	}	334	}
293		335
294	inline_speed void *	336	inline_speed void *
295	ev_realloc (void *ptr, size_t size)	337	ev_realloc (void *ptr, long size)
296	{	338	{
297	ptr = alloc (ptr, size);	339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
298		340
299	if (!ptr && size)	341	if (!ptr && size)
300	{	342	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);	343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	344	abort ();
303	}	345	}
304		346
305	return ptr;	347	return ptr;
306	}	348	}
…		…
324	{	366	{
325	W w;	367	W w;
326	int events;	368	int events;
327	} ANPENDING;	369	} ANPENDING;
328		370
		371	#if EV_USE_INOTIFY
329	typedef struct	372	typedef struct
330	{	373	{
331	#if EV_USE_INOTIFY
332	WL head;	374	WL head;
333	#endif
334	} ANFS;	375	} ANFS;
		376	#endif
335		377
336	#if EV_MULTIPLICITY	378	#if EV_MULTIPLICITY
337		379
338	struct ev_loop	380	struct ev_loop
339	{	381	{
…		…
396	{	438	{
397	return ev_rt_now;	439	return ev_rt_now;
398	}	440	}
399	#endif	441	#endif
400		442
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	443	void
		444	ev_sleep (ev_tstamp delay)
		445	{
		446	if (delay > 0.)
		447	{
		448	#if EV_USE_NANOSLEEP
		449	struct timespec ts;
		450
		451	ts.tv_sec = (time_t)delay;
		452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		453
		454	nanosleep (&ts, 0);
		455	#elif defined(_WIN32)
		456	Sleep (delay * 1e3);
		457	#else
		458	struct timeval tv;
		459
		460	tv.tv_sec = (time_t)delay;
		461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		462
		463	select (0, 0, 0, 0, &tv);
		464	#endif
		465	}
		466	}
		467
		468	/*****************************************************************************/
		469
		470	int inline_size
		471	array_nextsize (int elem, int cur, int cnt)
		472	{
		473	int ncur = cur + 1;
		474
		475	do
		476	ncur <<= 1;
		477	while (cnt > ncur);
		478
		479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		480	if (elem * ncur > 4096)
		481	{
		482	ncur *= elem;
		483	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		484	ncur = ncur - sizeof (void ) 4;
		485	ncur /= elem;
		486	}
		487
		488	return ncur;
		489	}
		490
		491	static noinline void *
		492	array_realloc (int elem, void base, int cur, int cnt)
		493	{
		494	cur = array_nextsize (elem, cur, cnt);
		495	return ev_realloc (base, elem * *cur);
		496	}
402		497
403	#define array_needsize(type,base,cur,cnt,init) \	498	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	499	if (expect_false ((cnt) > (cur))) \
405	{ \	500	{ \
406	int newcnt = cur; \	501	int ocur_ = (cur); \
407	do \	502	(base) = (type *)array_realloc \
408	{ \	503	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	504	init ((base) + (ocur_), (cur) - ocur_); \
410	} \
411	while ((cnt) > newcnt); \
412	\
413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
414	init (base + cur, newcnt - cur); \
415	cur = newcnt; \
416	}	505	}
417		506
		507	#if 0
418	#define array_slim(type,stem) \	508	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	509	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	510	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	511	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	512	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	514	}
		515	#endif
425		516
426	#define array_free(stem, idx) \	517	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		519
429	/*****************************************************************************/	520	/*****************************************************************************/
430		521
431	void noinline	522	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	523	ev_feed_event (EV_P_ void *w, int revents)
433	{	524	{
434	W w_ = (W)w;	525	W w_ = (W)w;
		526	int pri = ABSPRI (w_);
435		527
436	if (expect_false (w_->pending))	528	if (expect_false (w_->pending))
		529	pendings [pri][w_->pending - 1].events \|= revents;
		530	else
437	{	531	{
		532	w_->pending = ++pendingcnt [pri];
		533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		534	pendings [pri][w_->pending - 1].w = w_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	535	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	536	}
441
442	w_->pending = ++pendingcnt [ABSPRI (w_)];
443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446	}	537	}
447		538
448	void inline_size	539	void inline_speed
449	queue_events (EV_P_ W *events, int eventcnt, int type)	540	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	541	{
451	int i;	542	int i;
452		543
453	for (i = 0; i < eventcnt; ++i)	544	for (i = 0; i < eventcnt; ++i)
…		…
485	}	576	}
486		577
487	void	578	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	579	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	580	{
		581	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	582	fd_event (EV_A_ fd, revents);
491	}	583	}
492		584
493	void inline_size	585	void inline_size
494	fd_reify (EV_P)	586	fd_reify (EV_P)
495	{	587	{
…		…
499	{	591	{
500	int fd = fdchanges [i];	592	int fd = fdchanges [i];
501	ANFD *anfd = anfds + fd;	593	ANFD *anfd = anfds + fd;
502	ev_io *w;	594	ev_io *w;
503		595
504	int events = 0;	596	unsigned char events = 0;
505		597
506	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	598	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
507	events \|= w->events;	599	events \|= (unsigned char)w->events;
508		600
509	#if EV_SELECT_IS_WINSOCKET	601	#if EV_SELECT_IS_WINSOCKET
510	if (events)	602	if (events)
511	{	603	{
512	unsigned long argp;	604	unsigned long argp;
		605	#ifdef EV_FD_TO_WIN32_HANDLE
		606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		607	#else
513	anfd->handle = _get_osfhandle (fd);	608	anfd->handle = _get_osfhandle (fd);
		609	#endif
514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515	}	611	}
516	#endif	612	#endif
517		613
		614	{
		615	unsigned char o_events = anfd->events;
		616	unsigned char o_reify = anfd->reify;
		617
518	anfd->reify = 0;	618	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	anfd->events = events;	619	anfd->events = events;
		620
		621	if (o_events != events \|\| o_reify & EV_IOFDSET)
		622	backend_modify (EV_A_ fd, o_events, events);
		623	}
522	}	624	}
523		625
524	fdchangecnt = 0;	626	fdchangecnt = 0;
525	}	627	}
526		628
527	void inline_size	629	void inline_size
528	fd_change (EV_P_ int fd)	630	fd_change (EV_P_ int fd, int flags)
529	{	631	{
530	if (expect_false (anfds [fd].reify))	632	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	633	anfds [fd].reify \|= flags;
534		634
		635	if (expect_true (!reify))
		636	{
535	++fdchangecnt;	637	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	639	fdchanges [fdchangecnt - 1] = fd;
		640	}
538	}	641	}
539		642
540	void inline_speed	643	void inline_speed
541	fd_kill (EV_P_ int fd)	644	fd_kill (EV_P_ int fd)
542	{	645	{
…		…
589	static void noinline	692	static void noinline
590	fd_rearm_all (EV_P)	693	fd_rearm_all (EV_P)
591	{	694	{
592	int fd;	695	int fd;
593		696
594	/* this should be highly optimised to not do anything but set a flag */
595	for (fd = 0; fd < anfdmax; ++fd)	697	for (fd = 0; fd < anfdmax; ++fd)
596	if (anfds [fd].events)	698	if (anfds [fd].events)
597	{	699	{
598	anfds [fd].events = 0;	700	anfds [fd].events = 0;
599	fd_change (EV_A_ fd);	701	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
600	}	702	}
601	}	703	}
602		704
603	/*****************************************************************************/	705	/*****************************************************************************/
604		706
605	void inline_speed	707	void inline_speed
606	upheap (WT *heap, int k)	708	upheap (WT *heap, int k)
607	{	709	{
608	WT w = heap [k];	710	WT w = heap [k];
609		711
610	while (k && heap [k >> 1]->at > w->at)	712	while (k)
611	{	713	{
		714	int p = (k - 1) >> 1;
		715
		716	if (heap [p]->at <= w->at)
		717	break;
		718
612	heap [k] = heap [k >> 1];	719	heap [k] = heap [p];
613	((W)heap [k])->active = k + 1;	720	((W)heap [k])->active = k + 1;
614	k >>= 1;	721	k = p;
615	}	722	}
616		723
617	heap [k] = w;	724	heap [k] = w;
618	((W)heap [k])->active = k + 1;	725	((W)heap [k])->active = k + 1;
619
620	}	726	}
621		727
622	void inline_speed	728	void inline_speed
623	downheap (WT *heap, int N, int k)	729	downheap (WT *heap, int N, int k)
624	{	730	{
625	WT w = heap [k];	731	WT w = heap [k];
626		732
627	while (k < (N >> 1))	733	for (;;)
628	{	734	{
629	int j = k << 1;	735	int c = (k << 1) + 1;
630		736
631	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	737	if (c >= N)
632	++j;
633
634	if (w->at <= heap [j]->at)
635	break;	738	break;
636		739
		740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		741	? 1 : 0;
		742
		743	if (w->at <= heap [c]->at)
		744	break;
		745
637	heap [k] = heap [j];	746	heap [k] = heap [c];
638	((W)heap [k])->active = k + 1;	747	((W)heap [k])->active = k + 1;
		748
639	k = j;	749	k = c;
640	}	750	}
641		751
642	heap [k] = w;	752	heap [k] = w;
643	((W)heap [k])->active = k + 1;	753	((W)heap [k])->active = k + 1;
644	}	754	}
…		…
653	/*****************************************************************************/	763	/*****************************************************************************/
654		764
655	typedef struct	765	typedef struct
656	{	766	{
657	WL head;	767	WL head;
658	sig_atomic_t volatile gotsig;	768	EV_ATOMIC_T gotsig;
659	} ANSIG;	769	} ANSIG;
660		770
661	static ANSIG *signals;	771	static ANSIG *signals;
662	static int signalmax;	772	static int signalmax;
663		773
664	static int sigpipe [2];	774	static EV_ATOMIC_T gotsig;
665	static sig_atomic_t volatile gotsig;
666	static ev_io sigev;
667		775
668	void inline_size	776	void inline_size
669	signals_init (ANSIG *base, int count)	777	signals_init (ANSIG *base, int count)
670	{	778	{
671	while (count--)	779	while (count--)
…		…
675		783
676	++base;	784	++base;
677	}	785	}
678	}	786	}
679		787
680	static void	788	/*****************************************************************************/
681	sighandler (int signum)
682	{
683	#if _WIN32
684	signal (signum, sighandler);
685	#endif
686		789
687	signals [signum - 1].gotsig = 1;
688
689	if (!gotsig)
690	{
691	int old_errno = errno;
692	gotsig = 1;
693	write (sigpipe [1], &signum, 1);
694	errno = old_errno;
695	}
696	}
697
698	void noinline
699	ev_feed_signal_event (EV_P_ int signum)
700	{
701	WL w;
702
703	#if EV_MULTIPLICITY
704	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
705	#endif
706
707	--signum;
708
709	if (signum < 0 \|\| signum >= signalmax)
710	return;
711
712	signals [signum].gotsig = 0;
713
714	for (w = signals [signum].head; w; w = w->next)
715	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
716	}
717
718	static void
719	sigcb (EV_P_ ev_io *iow, int revents)
720	{
721	int signum;
722
723	read (sigpipe [0], &revents, 1);
724	gotsig = 0;
725
726	for (signum = signalmax; signum--; )
727	if (signals [signum].gotsig)
728	ev_feed_signal_event (EV_A_ signum + 1);
729	}
730
731	void inline_size	790	void inline_speed
732	fd_intern (int fd)	791	fd_intern (int fd)
733	{	792	{
734	#ifdef _WIN32	793	#ifdef _WIN32
735	int arg = 1;	794	int arg = 1;
736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
739	fcntl (fd, F_SETFL, O_NONBLOCK);	798	fcntl (fd, F_SETFL, O_NONBLOCK);
740	#endif	799	#endif
741	}	800	}
742		801
743	static void noinline	802	static void noinline
744	siginit (EV_P)	803	evpipe_init (EV_P)
745	{	804	{
		805	if (!ev_is_active (&pipeev))
		806	{
		807	while (pipe (evpipe))
		808	syserr ("(libev) error creating signal/async pipe");
		809
746	fd_intern (sigpipe [0]);	810	fd_intern (evpipe [0]);
747	fd_intern (sigpipe [1]);	811	fd_intern (evpipe [1]);
748		812
749	ev_io_set (&sigev, sigpipe [0], EV_READ);	813	ev_io_set (&pipeev, evpipe [0], EV_READ);
750	ev_io_start (EV_A_ &sigev);	814	ev_io_start (EV_A_ &pipeev);
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	815	ev_unref (EV_A); /* watcher should not keep loop alive */
		816	}
		817	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		821	{
		822	if (!*flag)
		823	{
		824	int old_errno = errno; /* save errno because write might clobber it */
		825
		826	*flag = 1;
		827	write (evpipe [1], &old_errno, 1);
		828
		829	errno = old_errno;
		830	}
		831	}
		832
		833	static void
		834	pipecb (EV_P_ ev_io *iow, int revents)
		835	{
		836	{
		837	int dummy;
		838	read (evpipe [0], &dummy, 1);
		839	}
		840
		841	if (gotsig && ev_is_default_loop (EV_A))
		842	{
		843	int signum;
		844	gotsig = 0;
		845
		846	for (signum = signalmax; signum--; )
		847	if (signals [signum].gotsig)
		848	ev_feed_signal_event (EV_A_ signum + 1);
		849	}
		850
		851	#if EV_ASYNC_ENABLE
		852	if (gotasync)
		853	{
		854	int i;
		855	gotasync = 0;
		856
		857	for (i = asynccnt; i--; )
		858	if (asyncs [i]->sent)
		859	{
		860	asyncs [i]->sent = 0;
		861	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		862	}
		863	}
		864	#endif
752	}	865	}
753		866
754	/*****************************************************************************/	867	/*****************************************************************************/
755		868
		869	static void
		870	sighandler (int signum)
		871	{
		872	#if EV_MULTIPLICITY
		873	struct ev_loop *loop = &default_loop_struct;
		874	#endif
		875
		876	#if _WIN32
		877	signal (signum, sighandler);
		878	#endif
		879
		880	signals [signum - 1].gotsig = 1;
		881	evpipe_write (EV_A_ &gotsig);
		882	}
		883
		884	void noinline
		885	ev_feed_signal_event (EV_P_ int signum)
		886	{
		887	WL w;
		888
		889	#if EV_MULTIPLICITY
		890	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		891	#endif
		892
		893	--signum;
		894
		895	if (signum < 0 \|\| signum >= signalmax)
		896	return;
		897
		898	signals [signum].gotsig = 0;
		899
		900	for (w = signals [signum].head; w; w = w->next)
		901	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		902	}
		903
		904	/*****************************************************************************/
		905
756	static ev_child *childs [EV_PID_HASHSIZE];	906	static WL childs [EV_PID_HASHSIZE];
757		907
758	#ifndef _WIN32	908	#ifndef _WIN32
759		909
760	static ev_signal childev;	910	static ev_signal childev;
761		911
		912	#ifndef WIFCONTINUED
		913	# define WIFCONTINUED(status) 0
		914	#endif
		915
762	void inline_speed	916	void inline_speed
763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	917	child_reap (EV_P_ int chain, int pid, int status)
764	{	918	{
765	ev_child *w;	919	ev_child *w;
		920	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
766		921
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	922	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		923	{
768	if (w->pid == pid \|\| !w->pid)	924	if ((w->pid == pid \|\| !w->pid)
		925	&& (!traced \|\| (w->flags & 1)))
769	{	926	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	927	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
771	w->rpid = pid;	928	w->rpid = pid;
772	w->rstatus = status;	929	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	930	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	931	}
		932	}
775	}	933	}
776		934
777	#ifndef WCONTINUED	935	#ifndef WCONTINUED
778	# define WCONTINUED 0	936	# define WCONTINUED 0
779	#endif	937	#endif
…		…
788	if (!WCONTINUED	946	if (!WCONTINUED
789	\|\| errno != EINVAL	947	\|\| errno != EINVAL
790	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))	948	\|\| 0 >= (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED)))
791	return;	949	return;
792		950
793	/* make sure we are called again until all childs have been reaped */	951	/* make sure we are called again until all children have been reaped */
794	/* we need to do it this way so that the callback gets called before we continue */	952	/* we need to do it this way so that the callback gets called before we continue */
795	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	953	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
796		954
797	child_reap (EV_A_ sw, pid, pid, status);	955	child_reap (EV_A_ pid, pid, status);
798	if (EV_PID_HASHSIZE > 1)	956	if (EV_PID_HASHSIZE > 1)
799	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	957	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
800	}	958	}
801		959
802	#endif	960	#endif
803		961
804	/*****************************************************************************/	962	/*****************************************************************************/
…		…
876	}	1034	}
877		1035
878	unsigned int	1036	unsigned int
879	ev_embeddable_backends (void)	1037	ev_embeddable_backends (void)
880	{	1038	{
881	return EVBACKEND_EPOLL	1039	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
882	\| EVBACKEND_KQUEUE	1040
883	\| EVBACKEND_PORT;	1041	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1042	/* please fix it and tell me how to detect the fix */
		1043	flags &= ~EVBACKEND_EPOLL;
		1044
		1045	return flags;
884	}	1046	}
885		1047
886	unsigned int	1048	unsigned int
887	ev_backend (EV_P)	1049	ev_backend (EV_P)
888	{	1050	{
889	return backend;	1051	return backend;
		1052	}
		1053
		1054	unsigned int
		1055	ev_loop_count (EV_P)
		1056	{
		1057	return loop_count;
		1058	}
		1059
		1060	void
		1061	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1062	{
		1063	io_blocktime = interval;
		1064	}
		1065
		1066	void
		1067	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1068	{
		1069	timeout_blocktime = interval;
890	}	1070	}
891		1071
892	static void noinline	1072	static void noinline
893	loop_init (EV_P_ unsigned int flags)	1073	loop_init (EV_P_ unsigned int flags)
894	{	1074	{
…		…
900	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1080	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
901	have_monotonic = 1;	1081	have_monotonic = 1;
902	}	1082	}
903	#endif	1083	#endif
904		1084
905	ev_rt_now = ev_time ();	1085	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	1086	mn_now = get_clock ();
907	now_floor = mn_now;	1087	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	1088	rtmn_diff = ev_rt_now - mn_now;
		1089
		1090	io_blocktime = 0.;
		1091	timeout_blocktime = 0.;
		1092	backend = 0;
		1093	backend_fd = -1;
		1094	gotasync = 0;
		1095	#if EV_USE_INOTIFY
		1096	fs_fd = -2;
		1097	#endif
		1098
		1099	/* pid check not overridable via env */
		1100	#ifndef _WIN32
		1101	if (flags & EVFLAG_FORKCHECK)
		1102	curpid = getpid ();
		1103	#endif
909		1104
910	if (!(flags & EVFLAG_NOENV)	1105	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	1106	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	1107	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	1108	flags = atoi (getenv ("LIBEV_FLAGS"));
914		1109
915	if (!(flags & 0x0000ffffUL))	1110	if (!(flags & 0x0000ffffUL))
916	flags \|= ev_recommended_backends ();	1111	flags \|= ev_recommended_backends ();
917		1112
918	backend = 0;
919	backend_fd = -1;
920	#if EV_USE_INOTIFY
921	fs_fd = -2;
922	#endif
923
924	#if EV_USE_PORT	1113	#if EV_USE_PORT
925	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1114	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
926	#endif	1115	#endif
927	#if EV_USE_KQUEUE	1116	#if EV_USE_KQUEUE
928	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1117	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
935	#endif	1124	#endif
936	#if EV_USE_SELECT	1125	#if EV_USE_SELECT
937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1126	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
938	#endif	1127	#endif
939		1128
940	ev_init (&sigev, sigcb);	1129	ev_init (&pipeev, pipecb);
941	ev_set_priority (&sigev, EV_MAXPRI);	1130	ev_set_priority (&pipeev, EV_MAXPRI);
942	}	1131	}
943	}	1132	}
944		1133
945	static void noinline	1134	static void noinline
946	loop_destroy (EV_P)	1135	loop_destroy (EV_P)
947	{	1136	{
948	int i;	1137	int i;
		1138
		1139	if (ev_is_active (&pipeev))
		1140	{
		1141	ev_ref (EV_A); /* signal watcher */
		1142	ev_io_stop (EV_A_ &pipeev);
		1143
		1144	close (evpipe [0]); evpipe [0] = 0;
		1145	close (evpipe [1]); evpipe [1] = 0;
		1146	}
949		1147
950	#if EV_USE_INOTIFY	1148	#if EV_USE_INOTIFY
951	if (fs_fd >= 0)	1149	if (fs_fd >= 0)
952	close (fs_fd);	1150	close (fs_fd);
953	#endif	1151	#endif
…		…
970	#if EV_USE_SELECT	1168	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1169	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1170	#endif
973		1171
974	for (i = NUMPRI; i--; )	1172	for (i = NUMPRI; i--; )
		1173	{
975	array_free (pending, [i]);	1174	array_free (pending, [i]);
		1175	#if EV_IDLE_ENABLE
		1176	array_free (idle, [i]);
		1177	#endif
		1178	}
		1179
		1180	ev_free (anfds); anfdmax = 0;
976		1181
977	/* have to use the microsoft-never-gets-it-right macro */	1182	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1183	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1184	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1185	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1186	array_free (periodic, EMPTY);
982	#endif	1187	#endif
		1188	#if EV_FORK_ENABLE
983	array_free (idle, EMPTY0);	1189	array_free (fork, EMPTY);
		1190	#endif
984	array_free (prepare, EMPTY0);	1191	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1192	array_free (check, EMPTY);
		1193	#if EV_ASYNC_ENABLE
		1194	array_free (async, EMPTY);
		1195	#endif
986		1196
987	backend = 0;	1197	backend = 0;
988	}	1198	}
989		1199
990	void inline_size infy_fork (EV_P);	1200	void inline_size infy_fork (EV_P);
…		…
1003	#endif	1213	#endif
1004	#if EV_USE_INOTIFY	1214	#if EV_USE_INOTIFY
1005	infy_fork (EV_A);	1215	infy_fork (EV_A);
1006	#endif	1216	#endif
1007		1217
1008	if (ev_is_active (&sigev))	1218	if (ev_is_active (&pipeev))
1009	{	1219	{
1010	/* default loop */	1220	/* this "locks" the handlers against writing to the pipe */
		1221	/* while we modify the fd vars */
		1222	gotsig = 1;
		1223	#if EV_ASYNC_ENABLE
		1224	gotasync = 1;
		1225	#endif
1011		1226
1012	ev_ref (EV_A);	1227	ev_ref (EV_A);
1013	ev_io_stop (EV_A_ &sigev);	1228	ev_io_stop (EV_A_ &pipeev);
1014	close (sigpipe [0]);	1229	close (evpipe [0]);
1015	close (sigpipe [1]);	1230	close (evpipe [1]);
1016		1231
1017	while (pipe (sigpipe))
1018	syserr ("(libev) error creating pipe");
1019
1020	siginit (EV_A);	1232	evpipe_init (EV_A);
		1233	/* now iterate over everything, in case we missed something */
		1234	pipecb (EV_A_ &pipeev, EV_READ);
1021	}	1235	}
1022		1236
1023	postfork = 0;	1237	postfork = 0;
1024	}	1238	}
1025		1239
…		…
1047	}	1261	}
1048		1262
1049	void	1263	void
1050	ev_loop_fork (EV_P)	1264	ev_loop_fork (EV_P)
1051	{	1265	{
1052	postfork = 1;	1266	postfork = 1; /* must be in line with ev_default_fork */
1053	}	1267	}
1054		1268
1055	#endif	1269	#endif
1056		1270
1057	#if EV_MULTIPLICITY	1271	#if EV_MULTIPLICITY
…		…
1060	#else	1274	#else
1061	int	1275	int
1062	ev_default_loop (unsigned int flags)	1276	ev_default_loop (unsigned int flags)
1063	#endif	1277	#endif
1064	{	1278	{
1065	if (sigpipe [0] == sigpipe [1])
1066	if (pipe (sigpipe))
1067	return 0;
1068
1069	if (!ev_default_loop_ptr)	1279	if (!ev_default_loop_ptr)
1070	{	1280	{
1071	#if EV_MULTIPLICITY	1281	#if EV_MULTIPLICITY
1072	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1282	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1073	#else	1283	#else
…		…
1076		1286
1077	loop_init (EV_A_ flags);	1287	loop_init (EV_A_ flags);
1078		1288
1079	if (ev_backend (EV_A))	1289	if (ev_backend (EV_A))
1080	{	1290	{
1081	siginit (EV_A);
1082
1083	#ifndef _WIN32	1291	#ifndef _WIN32
1084	ev_signal_init (&childev, childcb, SIGCHLD);	1292	ev_signal_init (&childev, childcb, SIGCHLD);
1085	ev_set_priority (&childev, EV_MAXPRI);	1293	ev_set_priority (&childev, EV_MAXPRI);
1086	ev_signal_start (EV_A_ &childev);	1294	ev_signal_start (EV_A_ &childev);
1087	ev_unref (EV_A); /* child watcher should not keep loop alive */	1295	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1104	#ifndef _WIN32	1312	#ifndef _WIN32
1105	ev_ref (EV_A); /* child watcher */	1313	ev_ref (EV_A); /* child watcher */
1106	ev_signal_stop (EV_A_ &childev);	1314	ev_signal_stop (EV_A_ &childev);
1107	#endif	1315	#endif
1108		1316
1109	ev_ref (EV_A); /* signal watcher */
1110	ev_io_stop (EV_A_ &sigev);
1111
1112	close (sigpipe [0]); sigpipe [0] = 0;
1113	close (sigpipe [1]); sigpipe [1] = 0;
1114
1115	loop_destroy (EV_A);	1317	loop_destroy (EV_A);
1116	}	1318	}
1117		1319
1118	void	1320	void
1119	ev_default_fork (void)	1321	ev_default_fork (void)
…		…
1121	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1122	struct ev_loop *loop = ev_default_loop_ptr;	1324	struct ev_loop *loop = ev_default_loop_ptr;
1123	#endif	1325	#endif
1124		1326
1125	if (backend)	1327	if (backend)
1126	postfork = 1;	1328	postfork = 1; /* must be in line with ev_loop_fork */
1127	}	1329	}
1128		1330
1129	/*****************************************************************************/	1331	/*****************************************************************************/
1130		1332
1131	int inline_size	1333	void
1132	any_pending (EV_P)	1334	ev_invoke (EV_P_ void *w, int revents)
1133	{	1335	{
1134	int pri;	1336	EV_CB_INVOKE ((W)w, revents);
1135
1136	for (pri = NUMPRI; pri--; )
1137	if (pendingcnt [pri])
1138	return 1;
1139
1140	return 0;
1141	}	1337	}
1142		1338
1143	void inline_speed	1339	void inline_speed
1144	call_pending (EV_P)	1340	call_pending (EV_P)
1145	{	1341	{
…		…
1163	void inline_size	1359	void inline_size
1164	timers_reify (EV_P)	1360	timers_reify (EV_P)
1165	{	1361	{
1166	while (timercnt && ((WT)timers [0])->at <= mn_now)	1362	while (timercnt && ((WT)timers [0])->at <= mn_now)
1167	{	1363	{
1168	ev_timer *w = timers [0];	1364	ev_timer w = (ev_timer )timers [0];
1169		1365
1170	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1366	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1171		1367
1172	/* first reschedule or stop timer */	1368	/* first reschedule or stop timer */
1173	if (w->repeat)	1369	if (w->repeat)
…		…
1176		1372
1177	((WT)w)->at += w->repeat;	1373	((WT)w)->at += w->repeat;
1178	if (((WT)w)->at < mn_now)	1374	if (((WT)w)->at < mn_now)
1179	((WT)w)->at = mn_now;	1375	((WT)w)->at = mn_now;
1180		1376
1181	downheap ((WT *)timers, timercnt, 0);	1377	downheap (timers, timercnt, 0);
1182	}	1378	}
1183	else	1379	else
1184	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1380	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1185		1381
1186	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1382	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1191	void inline_size	1387	void inline_size
1192	periodics_reify (EV_P)	1388	periodics_reify (EV_P)
1193	{	1389	{
1194	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1390	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1195	{	1391	{
1196	ev_periodic *w = periodics [0];	1392	ev_periodic w = (ev_periodic )periodics [0];
1197		1393
1198	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1394	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1199		1395
1200	/* first reschedule or stop timer */	1396	/* first reschedule or stop timer */
1201	if (w->reschedule_cb)	1397	if (w->reschedule_cb)
1202	{	1398	{
1203	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1399	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1204	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1400	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1205	downheap ((WT *)periodics, periodiccnt, 0);	1401	downheap (periodics, periodiccnt, 0);
1206	}	1402	}
1207	else if (w->interval)	1403	else if (w->interval)
1208	{	1404	{
1209	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1405	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1406	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1210	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1407	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1211	downheap ((WT *)periodics, periodiccnt, 0);	1408	downheap (periodics, periodiccnt, 0);
1212	}	1409	}
1213	else	1410	else
1214	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1411	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1215		1412
1216	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1413	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1223	int i;	1420	int i;
1224		1421
1225	/* adjust periodics after time jump */	1422	/* adjust periodics after time jump */
1226	for (i = 0; i < periodiccnt; ++i)	1423	for (i = 0; i < periodiccnt; ++i)
1227	{	1424	{
1228	ev_periodic *w = periodics [i];	1425	ev_periodic w = (ev_periodic )periodics [i];
1229		1426
1230	if (w->reschedule_cb)	1427	if (w->reschedule_cb)
1231	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1428	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1232	else if (w->interval)	1429	else if (w->interval)
1233	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1430	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1234	}	1431	}
1235		1432
1236	/* now rebuild the heap */	1433	/* now rebuild the heap */
1237	for (i = periodiccnt >> 1; i--; )	1434	for (i = periodiccnt >> 1; i--; )
1238	downheap ((WT *)periodics, periodiccnt, i);	1435	downheap (periodics, periodiccnt, i);
1239	}	1436	}
1240	#endif	1437	#endif
1241		1438
		1439	#if EV_IDLE_ENABLE
1242	int inline_size	1440	void inline_size
1243	time_update_monotonic (EV_P)	1441	idle_reify (EV_P)
1244	{	1442	{
		1443	if (expect_false (idleall))
		1444	{
		1445	int pri;
		1446
		1447	for (pri = NUMPRI; pri--; )
		1448	{
		1449	if (pendingcnt [pri])
		1450	break;
		1451
		1452	if (idlecnt [pri])
		1453	{
		1454	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1455	break;
		1456	}
		1457	}
		1458	}
		1459	}
		1460	#endif
		1461
		1462	void inline_speed
		1463	time_update (EV_P_ ev_tstamp max_block)
		1464	{
		1465	int i;
		1466
		1467	#if EV_USE_MONOTONIC
		1468	if (expect_true (have_monotonic))
		1469	{
		1470	ev_tstamp odiff = rtmn_diff;
		1471
1245	mn_now = get_clock ();	1472	mn_now = get_clock ();
1246		1473
		1474	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1475	/* interpolate in the meantime */
1247	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1476	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1248	{	1477	{
1249	ev_rt_now = rtmn_diff + mn_now;	1478	ev_rt_now = rtmn_diff + mn_now;
1250	return 0;	1479	return;
1251	}	1480	}
1252	else	1481
1253	{
1254	now_floor = mn_now;	1482	now_floor = mn_now;
1255	ev_rt_now = ev_time ();	1483	ev_rt_now = ev_time ();
1256	return 1;
1257	}
1258	}
1259		1484
1260	void inline_size	1485	/* loop a few times, before making important decisions.
1261	time_update (EV_P)	1486	* on the choice of "4": one iteration isn't enough,
1262	{	1487	* in case we get preempted during the calls to
1263	int i;	1488	* ev_time and get_clock. a second call is almost guaranteed
1264		1489	* to succeed in that case, though. and looping a few more times
1265	#if EV_USE_MONOTONIC	1490	* doesn't hurt either as we only do this on time-jumps or
1266	if (expect_true (have_monotonic))	1491	* in the unlikely event of having been preempted here.
1267	{	1492	*/
1268	if (time_update_monotonic (EV_A))	1493	for (i = 4; --i; )
1269	{	1494	{
1270	ev_tstamp odiff = rtmn_diff;
1271
1272	/* loop a few times, before making important decisions.
1273	* on the choice of "4": one iteration isn't enough,
1274	* in case we get preempted during the calls to
1275	* ev_time and get_clock. a second call is almost guarenteed
1276	* to succeed in that case, though. and looping a few more times
1277	* doesn't hurt either as we only do this on time-jumps or
1278	* in the unlikely event of getting preempted here.
1279	*/
1280	for (i = 4; --i; )
1281	{
1282	rtmn_diff = ev_rt_now - mn_now;	1495	rtmn_diff = ev_rt_now - mn_now;
1283		1496
1284	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1497	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1285	return; /* all is well */	1498	return; /* all is well */
1286		1499
1287	ev_rt_now = ev_time ();	1500	ev_rt_now = ev_time ();
1288	mn_now = get_clock ();	1501	mn_now = get_clock ();
1289	now_floor = mn_now;	1502	now_floor = mn_now;
1290	}	1503	}
1291		1504
1292	# if EV_PERIODIC_ENABLE	1505	# if EV_PERIODIC_ENABLE
1293	periodics_reschedule (EV_A);	1506	periodics_reschedule (EV_A);
1294	# endif	1507	# endif
1295	/* no timer adjustment, as the monotonic clock doesn't jump */	1508	/* no timer adjustment, as the monotonic clock doesn't jump */
1296	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1509	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1297	}
1298	}	1510	}
1299	else	1511	else
1300	#endif	1512	#endif
1301	{	1513	{
1302	ev_rt_now = ev_time ();	1514	ev_rt_now = ev_time ();
1303		1515
1304	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1516	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1305	{	1517	{
1306	#if EV_PERIODIC_ENABLE	1518	#if EV_PERIODIC_ENABLE
1307	periodics_reschedule (EV_A);	1519	periodics_reschedule (EV_A);
1308	#endif	1520	#endif
1309
1310	/* adjust timers. this is easy, as the offset is the same for all */	1521	/* adjust timers. this is easy, as the offset is the same for all of them */
1311	for (i = 0; i < timercnt; ++i)	1522	for (i = 0; i < timercnt; ++i)
1312	((WT)timers [i])->at += ev_rt_now - mn_now;	1523	((WT)timers [i])->at += ev_rt_now - mn_now;
1313	}	1524	}
1314		1525
1315	mn_now = ev_rt_now;	1526	mn_now = ev_rt_now;
…		…
1335	{	1546	{
1336	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1547	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1337	? EVUNLOOP_ONE	1548	? EVUNLOOP_ONE
1338	: EVUNLOOP_CANCEL;	1549	: EVUNLOOP_CANCEL;
1339		1550
1340	while (activecnt)	1551	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1552
		1553	do
1341	{	1554	{
1342	/* we might have forked, so reify kernel state if necessary */	1555	#ifndef _WIN32
		1556	if (expect_false (curpid)) /* penalise the forking check even more */
		1557	if (expect_false (getpid () != curpid))
		1558	{
		1559	curpid = getpid ();
		1560	postfork = 1;
		1561	}
		1562	#endif
		1563
1343	#if EV_FORK_ENABLE	1564	#if EV_FORK_ENABLE
		1565	/* we might have forked, so queue fork handlers */
1344	if (expect_false (postfork))	1566	if (expect_false (postfork))
1345	if (forkcnt)	1567	if (forkcnt)
1346	{	1568	{
1347	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1569	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1348	call_pending (EV_A);	1570	call_pending (EV_A);
1349	}	1571	}
1350	#endif	1572	#endif
1351		1573
1352	/* queue check watchers (and execute them) */	1574	/* queue prepare watchers (and execute them) */
1353	if (expect_false (preparecnt))	1575	if (expect_false (preparecnt))
1354	{	1576	{
1355	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1577	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1356	call_pending (EV_A);	1578	call_pending (EV_A);
1357	}	1579	}
1358		1580
		1581	if (expect_false (!activecnt))
		1582	break;
		1583
1359	/* we might have forked, so reify kernel state if necessary */	1584	/* we might have forked, so reify kernel state if necessary */
1360	if (expect_false (postfork))	1585	if (expect_false (postfork))
1361	loop_fork (EV_A);	1586	loop_fork (EV_A);
1362		1587
1363	/* update fd-related kernel structures */	1588	/* update fd-related kernel structures */
1364	fd_reify (EV_A);	1589	fd_reify (EV_A);
1365		1590
1366	/* calculate blocking time */	1591	/* calculate blocking time */
1367	{	1592	{
1368	double block;	1593	ev_tstamp waittime = 0.;
		1594	ev_tstamp sleeptime = 0.;
1369		1595
1370	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1596	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1371	block = 0.; /* do not block at all */
1372	else
1373	{	1597	{
1374	/* update time to cancel out callback processing overhead */	1598	/* update time to cancel out callback processing overhead */
1375	#if EV_USE_MONOTONIC
1376	if (expect_true (have_monotonic))
1377	time_update_monotonic (EV_A);	1599	time_update (EV_A_ 1e100);
1378	else
1379	#endif
1380	{
1381	ev_rt_now = ev_time ();
1382	mn_now = ev_rt_now;
1383	}
1384		1600
1385	block = MAX_BLOCKTIME;	1601	waittime = MAX_BLOCKTIME;
1386		1602
1387	if (timercnt)	1603	if (timercnt)
1388	{	1604	{
1389	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1605	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1390	if (block > to) block = to;	1606	if (waittime > to) waittime = to;
1391	}	1607	}
1392		1608
1393	#if EV_PERIODIC_ENABLE	1609	#if EV_PERIODIC_ENABLE
1394	if (periodiccnt)	1610	if (periodiccnt)
1395	{	1611	{
1396	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1612	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1397	if (block > to) block = to;	1613	if (waittime > to) waittime = to;
1398	}	1614	}
1399	#endif	1615	#endif
1400		1616
1401	if (expect_false (block < 0.)) block = 0.;	1617	if (expect_false (waittime < timeout_blocktime))
		1618	waittime = timeout_blocktime;
		1619
		1620	sleeptime = waittime - backend_fudge;
		1621
		1622	if (expect_true (sleeptime > io_blocktime))
		1623	sleeptime = io_blocktime;
		1624
		1625	if (sleeptime)
		1626	{
		1627	ev_sleep (sleeptime);
		1628	waittime -= sleeptime;
		1629	}
1402	}	1630	}
1403		1631
		1632	++loop_count;
1404	backend_poll (EV_A_ block);	1633	backend_poll (EV_A_ waittime);
		1634
		1635	/* update ev_rt_now, do magic */
		1636	time_update (EV_A_ waittime + sleeptime);
1405	}	1637	}
1406
1407	/* update ev_rt_now, do magic */
1408	time_update (EV_A);
1409		1638
1410	/* queue pending timers and reschedule them */	1639	/* queue pending timers and reschedule them */
1411	timers_reify (EV_A); /* relative timers called last */	1640	timers_reify (EV_A); /* relative timers called last */
1412	#if EV_PERIODIC_ENABLE	1641	#if EV_PERIODIC_ENABLE
1413	periodics_reify (EV_A); /* absolute timers called first */	1642	periodics_reify (EV_A); /* absolute timers called first */
1414	#endif	1643	#endif
1415		1644
		1645	#if EV_IDLE_ENABLE
1416	/* queue idle watchers unless other events are pending */	1646	/* queue idle watchers unless other events are pending */
1417	if (idlecnt && !any_pending (EV_A))	1647	idle_reify (EV_A);
1418	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1648	#endif
1419		1649
1420	/* queue check watchers, to be executed first */	1650	/* queue check watchers, to be executed first */
1421	if (expect_false (checkcnt))	1651	if (expect_false (checkcnt))
1422	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1652	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1423		1653
1424	call_pending (EV_A);	1654	call_pending (EV_A);
1425		1655
1426	if (expect_false (loop_done))
1427	break;
1428	}	1656	}
		1657	while (expect_true (activecnt && !loop_done));
1429		1658
1430	if (loop_done == EVUNLOOP_ONE)	1659	if (loop_done == EVUNLOOP_ONE)
1431	loop_done = EVUNLOOP_CANCEL;	1660	loop_done = EVUNLOOP_CANCEL;
1432	}	1661	}
1433		1662
…		…
1460	head = &(*head)->next;	1689	head = &(*head)->next;
1461	}	1690	}
1462	}	1691	}
1463		1692
1464	void inline_speed	1693	void inline_speed
1465	ev_clear_pending (EV_P_ W w)	1694	clear_pending (EV_P_ W w)
1466	{	1695	{
1467	if (w->pending)	1696	if (w->pending)
1468	{	1697	{
1469	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1698	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1470	w->pending = 0;	1699	w->pending = 0;
1471	}	1700	}
1472	}	1701	}
1473		1702
		1703	int
		1704	ev_clear_pending (EV_P_ void *w)
		1705	{
		1706	W w_ = (W)w;
		1707	int pending = w_->pending;
		1708
		1709	if (expect_true (pending))
		1710	{
		1711	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1712	w_->pending = 0;
		1713	p->w = 0;
		1714	return p->events;
		1715	}
		1716	else
		1717	return 0;
		1718	}
		1719
		1720	void inline_size
		1721	pri_adjust (EV_P_ W w)
		1722	{
		1723	int pri = w->priority;
		1724	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1725	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1726	w->priority = pri;
		1727	}
		1728
1474	void inline_speed	1729	void inline_speed
1475	ev_start (EV_P_ W w, int active)	1730	ev_start (EV_P_ W w, int active)
1476	{	1731	{
1477	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1732	pri_adjust (EV_A_ w);
1478	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1479
1480	w->active = active;	1733	w->active = active;
1481	ev_ref (EV_A);	1734	ev_ref (EV_A);
1482	}	1735	}
1483		1736
1484	void inline_size	1737	void inline_size
…		…
1488	w->active = 0;	1741	w->active = 0;
1489	}	1742	}
1490		1743
1491	/*****************************************************************************/	1744	/*****************************************************************************/
1492		1745
1493	void	1746	void noinline
1494	ev_io_start (EV_P_ ev_io *w)	1747	ev_io_start (EV_P_ ev_io *w)
1495	{	1748	{
1496	int fd = w->fd;	1749	int fd = w->fd;
1497		1750
1498	if (expect_false (ev_is_active (w)))	1751	if (expect_false (ev_is_active (w)))
…		…
1500		1753
1501	assert (("ev_io_start called with negative fd", fd >= 0));	1754	assert (("ev_io_start called with negative fd", fd >= 0));
1502		1755
1503	ev_start (EV_A_ (W)w, 1);	1756	ev_start (EV_A_ (W)w, 1);
1504	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1757	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1505	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1758	wlist_add (&anfds[fd].head, (WL)w);
1506		1759
1507	fd_change (EV_A_ fd);	1760	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1761	w->events &= ~EV_IOFDSET;
1508	}	1762	}
1509		1763
1510	void	1764	void noinline
1511	ev_io_stop (EV_P_ ev_io *w)	1765	ev_io_stop (EV_P_ ev_io *w)
1512	{	1766	{
1513	ev_clear_pending (EV_A_ (W)w);	1767	clear_pending (EV_A_ (W)w);
1514	if (expect_false (!ev_is_active (w)))	1768	if (expect_false (!ev_is_active (w)))
1515	return;	1769	return;
1516		1770
1517	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1771	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1518		1772
1519	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1773	wlist_del (&anfds[w->fd].head, (WL)w);
1520	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
1521		1775
1522	fd_change (EV_A_ w->fd);	1776	fd_change (EV_A_ w->fd, 1);
1523	}	1777	}
1524		1778
1525	void	1779	void noinline
1526	ev_timer_start (EV_P_ ev_timer *w)	1780	ev_timer_start (EV_P_ ev_timer *w)
1527	{	1781	{
1528	if (expect_false (ev_is_active (w)))	1782	if (expect_false (ev_is_active (w)))
1529	return;	1783	return;
1530		1784
1531	((WT)w)->at += mn_now;	1785	((WT)w)->at += mn_now;
1532		1786
1533	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1787	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1534		1788
1535	ev_start (EV_A_ (W)w, ++timercnt);	1789	ev_start (EV_A_ (W)w, ++timercnt);
1536	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1790	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1537	timers [timercnt - 1] = w;	1791	timers [timercnt - 1] = (WT)w;
1538	upheap ((WT *)timers, timercnt - 1);	1792	upheap (timers, timercnt - 1);
1539		1793
1540	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1794	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1541	}	1795	}
1542		1796
1543	void	1797	void noinline
1544	ev_timer_stop (EV_P_ ev_timer *w)	1798	ev_timer_stop (EV_P_ ev_timer *w)
1545	{	1799	{
1546	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1547	if (expect_false (!ev_is_active (w)))	1801	if (expect_false (!ev_is_active (w)))
1548	return;	1802	return;
1549		1803
1550	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1804	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1551		1805
1552	{	1806	{
1553	int active = ((W)w)->active;	1807	int active = ((W)w)->active;
1554		1808
1555	if (expect_true (--active < --timercnt))	1809	if (expect_true (--active < --timercnt))
1556	{	1810	{
1557	timers [active] = timers [timercnt];	1811	timers [active] = timers [timercnt];
1558	adjustheap ((WT *)timers, timercnt, active);	1812	adjustheap (timers, timercnt, active);
1559	}	1813	}
1560	}	1814	}
1561		1815
1562	((WT)w)->at -= mn_now;	1816	((WT)w)->at -= mn_now;
1563		1817
1564	ev_stop (EV_A_ (W)w);	1818	ev_stop (EV_A_ (W)w);
1565	}	1819	}
1566		1820
1567	void	1821	void noinline
1568	ev_timer_again (EV_P_ ev_timer *w)	1822	ev_timer_again (EV_P_ ev_timer *w)
1569	{	1823	{
1570	if (ev_is_active (w))	1824	if (ev_is_active (w))
1571	{	1825	{
1572	if (w->repeat)	1826	if (w->repeat)
1573	{	1827	{
1574	((WT)w)->at = mn_now + w->repeat;	1828	((WT)w)->at = mn_now + w->repeat;
1575	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1829	adjustheap (timers, timercnt, ((W)w)->active - 1);
1576	}	1830	}
1577	else	1831	else
1578	ev_timer_stop (EV_A_ w);	1832	ev_timer_stop (EV_A_ w);
1579	}	1833	}
1580	else if (w->repeat)	1834	else if (w->repeat)
…		…
1583	ev_timer_start (EV_A_ w);	1837	ev_timer_start (EV_A_ w);
1584	}	1838	}
1585	}	1839	}
1586		1840
1587	#if EV_PERIODIC_ENABLE	1841	#if EV_PERIODIC_ENABLE
1588	void	1842	void noinline
1589	ev_periodic_start (EV_P_ ev_periodic *w)	1843	ev_periodic_start (EV_P_ ev_periodic *w)
1590	{	1844	{
1591	if (expect_false (ev_is_active (w)))	1845	if (expect_false (ev_is_active (w)))
1592	return;	1846	return;
1593		1847
…		…
1595	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1849	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1596	else if (w->interval)	1850	else if (w->interval)
1597	{	1851	{
1598	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1852	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1599	/* this formula differs from the one in periodic_reify because we do not always round up */	1853	/* this formula differs from the one in periodic_reify because we do not always round up */
1600	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1854	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1601	}	1855	}
		1856	else
		1857	((WT)w)->at = w->offset;
1602		1858
1603	ev_start (EV_A_ (W)w, ++periodiccnt);	1859	ev_start (EV_A_ (W)w, ++periodiccnt);
1604	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1860	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1605	periodics [periodiccnt - 1] = w;	1861	periodics [periodiccnt - 1] = (WT)w;
1606	upheap ((WT *)periodics, periodiccnt - 1);	1862	upheap (periodics, periodiccnt - 1);
1607		1863
1608	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1864	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1609	}	1865	}
1610		1866
1611	void	1867	void noinline
1612	ev_periodic_stop (EV_P_ ev_periodic *w)	1868	ev_periodic_stop (EV_P_ ev_periodic *w)
1613	{	1869	{
1614	ev_clear_pending (EV_A_ (W)w);	1870	clear_pending (EV_A_ (W)w);
1615	if (expect_false (!ev_is_active (w)))	1871	if (expect_false (!ev_is_active (w)))
1616	return;	1872	return;
1617		1873
1618	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1874	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1619		1875
1620	{	1876	{
1621	int active = ((W)w)->active;	1877	int active = ((W)w)->active;
1622		1878
1623	if (expect_true (--active < --periodiccnt))	1879	if (expect_true (--active < --periodiccnt))
1624	{	1880	{
1625	periodics [active] = periodics [periodiccnt];	1881	periodics [active] = periodics [periodiccnt];
1626	adjustheap ((WT *)periodics, periodiccnt, active);	1882	adjustheap (periodics, periodiccnt, active);
1627	}	1883	}
1628	}	1884	}
1629		1885
1630	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1631	}	1887	}
1632		1888
1633	void	1889	void noinline
1634	ev_periodic_again (EV_P_ ev_periodic *w)	1890	ev_periodic_again (EV_P_ ev_periodic *w)
1635	{	1891	{
1636	/* TODO: use adjustheap and recalculation */	1892	/* TODO: use adjustheap and recalculation */
1637	ev_periodic_stop (EV_A_ w);	1893	ev_periodic_stop (EV_A_ w);
1638	ev_periodic_start (EV_A_ w);	1894	ev_periodic_start (EV_A_ w);
…		…
1641		1897
1642	#ifndef SA_RESTART	1898	#ifndef SA_RESTART
1643	# define SA_RESTART 0	1899	# define SA_RESTART 0
1644	#endif	1900	#endif
1645		1901
1646	void	1902	void noinline
1647	ev_signal_start (EV_P_ ev_signal *w)	1903	ev_signal_start (EV_P_ ev_signal *w)
1648	{	1904	{
1649	#if EV_MULTIPLICITY	1905	#if EV_MULTIPLICITY
1650	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1906	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1651	#endif	1907	#endif
1652	if (expect_false (ev_is_active (w)))	1908	if (expect_false (ev_is_active (w)))
1653	return;	1909	return;
1654		1910
1655	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1911	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1656		1912
		1913	evpipe_init (EV_A);
		1914
		1915	{
		1916	#ifndef _WIN32
		1917	sigset_t full, prev;
		1918	sigfillset (&full);
		1919	sigprocmask (SIG_SETMASK, &full, &prev);
		1920	#endif
		1921
		1922	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1923
		1924	#ifndef _WIN32
		1925	sigprocmask (SIG_SETMASK, &prev, 0);
		1926	#endif
		1927	}
		1928
1657	ev_start (EV_A_ (W)w, 1);	1929	ev_start (EV_A_ (W)w, 1);
1658	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1659	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1930	wlist_add (&signals [w->signum - 1].head, (WL)w);
1660		1931
1661	if (!((WL)w)->next)	1932	if (!((WL)w)->next)
1662	{	1933	{
1663	#if _WIN32	1934	#if _WIN32
1664	signal (w->signum, sighandler);	1935	signal (w->signum, sighandler);
…		…
1670	sigaction (w->signum, &sa, 0);	1941	sigaction (w->signum, &sa, 0);
1671	#endif	1942	#endif
1672	}	1943	}
1673	}	1944	}
1674		1945
1675	void	1946	void noinline
1676	ev_signal_stop (EV_P_ ev_signal *w)	1947	ev_signal_stop (EV_P_ ev_signal *w)
1677	{	1948	{
1678	ev_clear_pending (EV_A_ (W)w);	1949	clear_pending (EV_A_ (W)w);
1679	if (expect_false (!ev_is_active (w)))	1950	if (expect_false (!ev_is_active (w)))
1680	return;	1951	return;
1681		1952
1682	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1953	wlist_del (&signals [w->signum - 1].head, (WL)w);
1683	ev_stop (EV_A_ (W)w);	1954	ev_stop (EV_A_ (W)w);
1684		1955
1685	if (!signals [w->signum - 1].head)	1956	if (!signals [w->signum - 1].head)
1686	signal (w->signum, SIG_DFL);	1957	signal (w->signum, SIG_DFL);
1687	}	1958	}
…		…
1694	#endif	1965	#endif
1695	if (expect_false (ev_is_active (w)))	1966	if (expect_false (ev_is_active (w)))
1696	return;	1967	return;
1697		1968
1698	ev_start (EV_A_ (W)w, 1);	1969	ev_start (EV_A_ (W)w, 1);
1699	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1970	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1700	}	1971	}
1701		1972
1702	void	1973	void
1703	ev_child_stop (EV_P_ ev_child *w)	1974	ev_child_stop (EV_P_ ev_child *w)
1704	{	1975	{
1705	ev_clear_pending (EV_A_ (W)w);	1976	clear_pending (EV_A_ (W)w);
1706	if (expect_false (!ev_is_active (w)))	1977	if (expect_false (!ev_is_active (w)))
1707	return;	1978	return;
1708		1979
1709	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1980	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1710	ev_stop (EV_A_ (W)w);	1981	ev_stop (EV_A_ (W)w);
1711	}	1982	}
1712		1983
1713	#if EV_STAT_ENABLE	1984	#if EV_STAT_ENABLE
1714		1985
…		…
1718	# endif	1989	# endif
1719		1990
1720	#define DEF_STAT_INTERVAL 5.0074891	1991	#define DEF_STAT_INTERVAL 5.0074891
1721	#define MIN_STAT_INTERVAL 0.1074891	1992	#define MIN_STAT_INTERVAL 0.1074891
1722		1993
1723	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1994	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1724		1995
1725	#if EV_USE_INOTIFY	1996	#if EV_USE_INOTIFY
1726	# define EV_INOTIFY_BUFSIZE 8192	1997	# define EV_INOTIFY_BUFSIZE 8192
1727		1998
1728	static void noinline	1999	static void noinline
…		…
1879	w->attr.st_nlink = 0;	2150	w->attr.st_nlink = 0;
1880	else if (!w->attr.st_nlink)	2151	else if (!w->attr.st_nlink)
1881	w->attr.st_nlink = 1;	2152	w->attr.st_nlink = 1;
1882	}	2153	}
1883		2154
1884	void noinline	2155	static void noinline
1885	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2156	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1886	{	2157	{
1887	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2158	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1888		2159
1889	/* we copy this here each the time so that */	2160	/* we copy this here each the time so that */
1890	/* prev has the old value when the callback gets invoked */	2161	/* prev has the old value when the callback gets invoked */
1891	w->prev = w->attr;	2162	w->prev = w->attr;
1892	ev_stat_stat (EV_A_ w);	2163	ev_stat_stat (EV_A_ w);
1893		2164
1894	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2165	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2166	if (
		2167	w->prev.st_dev != w->attr.st_dev
		2168	\|\| w->prev.st_ino != w->attr.st_ino
		2169	\|\| w->prev.st_mode != w->attr.st_mode
		2170	\|\| w->prev.st_nlink != w->attr.st_nlink
		2171	\|\| w->prev.st_uid != w->attr.st_uid
		2172	\|\| w->prev.st_gid != w->attr.st_gid
		2173	\|\| w->prev.st_rdev != w->attr.st_rdev
		2174	\|\| w->prev.st_size != w->attr.st_size
		2175	\|\| w->prev.st_atime != w->attr.st_atime
		2176	\|\| w->prev.st_mtime != w->attr.st_mtime
		2177	\|\| w->prev.st_ctime != w->attr.st_ctime
1895	{	2178	) {
1896	#if EV_USE_INOTIFY	2179	#if EV_USE_INOTIFY
1897	infy_del (EV_A_ w);	2180	infy_del (EV_A_ w);
1898	infy_add (EV_A_ w);	2181	infy_add (EV_A_ w);
1899	ev_stat_stat (EV_A_ w); /* avoid race... */	2182	ev_stat_stat (EV_A_ w); /* avoid race... */
1900	#endif	2183	#endif
…		…
1934	}	2217	}
1935		2218
1936	void	2219	void
1937	ev_stat_stop (EV_P_ ev_stat *w)	2220	ev_stat_stop (EV_P_ ev_stat *w)
1938	{	2221	{
1939	ev_clear_pending (EV_A_ (W)w);	2222	clear_pending (EV_A_ (W)w);
1940	if (expect_false (!ev_is_active (w)))	2223	if (expect_false (!ev_is_active (w)))
1941	return;	2224	return;
1942		2225
1943	#if EV_USE_INOTIFY	2226	#if EV_USE_INOTIFY
1944	infy_del (EV_A_ w);	2227	infy_del (EV_A_ w);
…		…
1947		2230
1948	ev_stop (EV_A_ (W)w);	2231	ev_stop (EV_A_ (W)w);
1949	}	2232	}
1950	#endif	2233	#endif
1951		2234
		2235	#if EV_IDLE_ENABLE
1952	void	2236	void
1953	ev_idle_start (EV_P_ ev_idle *w)	2237	ev_idle_start (EV_P_ ev_idle *w)
1954	{	2238	{
1955	if (expect_false (ev_is_active (w)))	2239	if (expect_false (ev_is_active (w)))
1956	return;	2240	return;
1957		2241
		2242	pri_adjust (EV_A_ (W)w);
		2243
		2244	{
		2245	int active = ++idlecnt [ABSPRI (w)];
		2246
		2247	++idleall;
1958	ev_start (EV_A_ (W)w, ++idlecnt);	2248	ev_start (EV_A_ (W)w, active);
		2249
1959	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2250	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1960	idles [idlecnt - 1] = w;	2251	idles [ABSPRI (w)][active - 1] = w;
		2252	}
1961	}	2253	}
1962		2254
1963	void	2255	void
1964	ev_idle_stop (EV_P_ ev_idle *w)	2256	ev_idle_stop (EV_P_ ev_idle *w)
1965	{	2257	{
1966	ev_clear_pending (EV_A_ (W)w);	2258	clear_pending (EV_A_ (W)w);
1967	if (expect_false (!ev_is_active (w)))	2259	if (expect_false (!ev_is_active (w)))
1968	return;	2260	return;
1969		2261
1970	{	2262	{
1971	int active = ((W)w)->active;	2263	int active = ((W)w)->active;
1972	idles [active - 1] = idles [--idlecnt];	2264
		2265	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1973	((W)idles [active - 1])->active = active;	2266	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2267
		2268	ev_stop (EV_A_ (W)w);
		2269	--idleall;
1974	}	2270	}
1975
1976	ev_stop (EV_A_ (W)w);
1977	}	2271	}
		2272	#endif
1978		2273
1979	void	2274	void
1980	ev_prepare_start (EV_P_ ev_prepare *w)	2275	ev_prepare_start (EV_P_ ev_prepare *w)
1981	{	2276	{
1982	if (expect_false (ev_is_active (w)))	2277	if (expect_false (ev_is_active (w)))
…		…
1988	}	2283	}
1989		2284
1990	void	2285	void
1991	ev_prepare_stop (EV_P_ ev_prepare *w)	2286	ev_prepare_stop (EV_P_ ev_prepare *w)
1992	{	2287	{
1993	ev_clear_pending (EV_A_ (W)w);	2288	clear_pending (EV_A_ (W)w);
1994	if (expect_false (!ev_is_active (w)))	2289	if (expect_false (!ev_is_active (w)))
1995	return;	2290	return;
1996		2291
1997	{	2292	{
1998	int active = ((W)w)->active;	2293	int active = ((W)w)->active;
…		…
2015	}	2310	}
2016		2311
2017	void	2312	void
2018	ev_check_stop (EV_P_ ev_check *w)	2313	ev_check_stop (EV_P_ ev_check *w)
2019	{	2314	{
2020	ev_clear_pending (EV_A_ (W)w);	2315	clear_pending (EV_A_ (W)w);
2021	if (expect_false (!ev_is_active (w)))	2316	if (expect_false (!ev_is_active (w)))
2022	return;	2317	return;
2023		2318
2024	{	2319	{
2025	int active = ((W)w)->active;	2320	int active = ((W)w)->active;
…		…
2032		2327
2033	#if EV_EMBED_ENABLE	2328	#if EV_EMBED_ENABLE
2034	void noinline	2329	void noinline
2035	ev_embed_sweep (EV_P_ ev_embed *w)	2330	ev_embed_sweep (EV_P_ ev_embed *w)
2036	{	2331	{
2037	ev_loop (w->loop, EVLOOP_NONBLOCK);	2332	ev_loop (w->other, EVLOOP_NONBLOCK);
2038	}	2333	}
2039		2334
2040	static void	2335	static void
2041	embed_cb (EV_P_ ev_io *io, int revents)	2336	embed_io_cb (EV_P_ ev_io *io, int revents)
2042	{	2337	{
2043	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2338	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2044		2339
2045	if (ev_cb (w))	2340	if (ev_cb (w))
2046	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2341	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2047	else	2342	else
2048	ev_embed_sweep (loop, w);	2343	ev_loop (w->other, EVLOOP_NONBLOCK);
2049	}	2344	}
		2345
		2346	static void
		2347	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2348	{
		2349	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2350
		2351	{
		2352	struct ev_loop *loop = w->other;
		2353
		2354	while (fdchangecnt)
		2355	{
		2356	fd_reify (EV_A);
		2357	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2358	}
		2359	}
		2360	}
		2361
		2362	#if 0
		2363	static void
		2364	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2365	{
		2366	ev_idle_stop (EV_A_ idle);
		2367	}
		2368	#endif
2050		2369
2051	void	2370	void
2052	ev_embed_start (EV_P_ ev_embed *w)	2371	ev_embed_start (EV_P_ ev_embed *w)
2053	{	2372	{
2054	if (expect_false (ev_is_active (w)))	2373	if (expect_false (ev_is_active (w)))
2055	return;	2374	return;
2056		2375
2057	{	2376	{
2058	struct ev_loop *loop = w->loop;	2377	struct ev_loop *loop = w->other;
2059	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2378	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2060	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2379	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2061	}	2380	}
2062		2381
2063	ev_set_priority (&w->io, ev_priority (w));	2382	ev_set_priority (&w->io, ev_priority (w));
2064	ev_io_start (EV_A_ &w->io);	2383	ev_io_start (EV_A_ &w->io);
2065		2384
		2385	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2386	ev_set_priority (&w->prepare, EV_MINPRI);
		2387	ev_prepare_start (EV_A_ &w->prepare);
		2388
		2389	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2390
2066	ev_start (EV_A_ (W)w, 1);	2391	ev_start (EV_A_ (W)w, 1);
2067	}	2392	}
2068		2393
2069	void	2394	void
2070	ev_embed_stop (EV_P_ ev_embed *w)	2395	ev_embed_stop (EV_P_ ev_embed *w)
2071	{	2396	{
2072	ev_clear_pending (EV_A_ (W)w);	2397	clear_pending (EV_A_ (W)w);
2073	if (expect_false (!ev_is_active (w)))	2398	if (expect_false (!ev_is_active (w)))
2074	return;	2399	return;
2075		2400
2076	ev_io_stop (EV_A_ &w->io);	2401	ev_io_stop (EV_A_ &w->io);
		2402	ev_prepare_stop (EV_A_ &w->prepare);
2077		2403
2078	ev_stop (EV_A_ (W)w);	2404	ev_stop (EV_A_ (W)w);
2079	}	2405	}
2080	#endif	2406	#endif
2081		2407
…		…
2092	}	2418	}
2093		2419
2094	void	2420	void
2095	ev_fork_stop (EV_P_ ev_fork *w)	2421	ev_fork_stop (EV_P_ ev_fork *w)
2096	{	2422	{
2097	ev_clear_pending (EV_A_ (W)w);	2423	clear_pending (EV_A_ (W)w);
2098	if (expect_false (!ev_is_active (w)))	2424	if (expect_false (!ev_is_active (w)))
2099	return;	2425	return;
2100		2426
2101	{	2427	{
2102	int active = ((W)w)->active;	2428	int active = ((W)w)->active;
…		…
2106		2432
2107	ev_stop (EV_A_ (W)w);	2433	ev_stop (EV_A_ (W)w);
2108	}	2434	}
2109	#endif	2435	#endif
2110		2436
		2437	#if EV_ASYNC_ENABLE
		2438	void
		2439	ev_async_start (EV_P_ ev_async *w)
		2440	{
		2441	if (expect_false (ev_is_active (w)))
		2442	return;
		2443
		2444	evpipe_init (EV_A);
		2445
		2446	ev_start (EV_A_ (W)w, ++asynccnt);
		2447	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2448	asyncs [asynccnt - 1] = w;
		2449	}
		2450
		2451	void
		2452	ev_async_stop (EV_P_ ev_async *w)
		2453	{
		2454	clear_pending (EV_A_ (W)w);
		2455	if (expect_false (!ev_is_active (w)))
		2456	return;
		2457
		2458	{
		2459	int active = ((W)w)->active;
		2460	asyncs [active - 1] = asyncs [--asynccnt];
		2461	((W)asyncs [active - 1])->active = active;
		2462	}
		2463
		2464	ev_stop (EV_A_ (W)w);
		2465	}
		2466
		2467	void
		2468	ev_async_send (EV_P_ ev_async *w)
		2469	{
		2470	w->sent = 1;
		2471	evpipe_write (EV_A_ &gotasync);
		2472	}
		2473	#endif
		2474
2111	/*****************************************************************************/	2475	/*****************************************************************************/
2112		2476
2113	struct ev_once	2477	struct ev_once
2114	{	2478	{
2115	ev_io io;	2479	ev_io io;
…		…
2170	ev_timer_set (&once->to, timeout, 0.);	2534	ev_timer_set (&once->to, timeout, 0.);
2171	ev_timer_start (EV_A_ &once->to);	2535	ev_timer_start (EV_A_ &once->to);
2172	}	2536	}
2173	}	2537	}
2174		2538
		2539	#if EV_MULTIPLICITY
		2540	#include "ev_wrap.h"
		2541	#endif
		2542
2175	#ifdef __cplusplus	2543	#ifdef __cplusplus
2176	}	2544	}
2177	#endif	2545	#endif
2178		2546

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.154 by root, Wed Nov 28 11:53:37 2007 UTC vs. Revision 1.216 by root, Sat Mar 8 07:04:55 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.154 by root, Wed Nov 28 11:53:37 2007 UTC vs.
Revision 1.216 by root, Sat Mar 8 07:04:55 2008 UTC