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

Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 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); /* child watcher should not keep loop alive */
		816	}
		817	}
		818
		819	void inline_size
		820	evpipe_write (EV_P_ int sig, int async)
		821	{
		822	if (!(gotasync \|\| gotsig))
		823	{
		824	int old_errno = errno;
		825
		826	if (sig) gotsig = 1;
		827	if (async) gotasync = 1;
		828
		829	write (evpipe [1], &old_errno, 1);
		830	errno = old_errno;
		831	}
		832	}
		833
		834	static void
		835	pipecb (EV_P_ ev_io *iow, int revents)
		836	{
		837	{
		838	int dummy;
		839	read (evpipe [0], &dummy, 1);
		840	}
		841
		842	if (gotsig)
		843	{
		844	int signum;
		845	gotsig = 0;
		846
		847	for (signum = signalmax; signum--; )
		848	if (signals [signum].gotsig)
		849	ev_feed_signal_event (EV_A_ signum + 1);
		850	}
		851
		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	}
752	}	864	}
753		865
754	/*****************************************************************************/	866	/*****************************************************************************/
755		867
		868	static void
		869	sighandler (int signum)
		870	{
		871	#if EV_MULTIPLICITY
		872	struct ev_loop *loop = &default_loop_struct;
		873	#endif
		874
		875	#if _WIN32
		876	signal (signum, sighandler);
		877	#endif
		878
		879	signals [signum - 1].gotsig = 1;
		880	evpipe_write (EV_A_ 1, 0);
		881	}
		882
		883	void noinline
		884	ev_feed_signal_event (EV_P_ int signum)
		885	{
		886	WL w;
		887
		888	#if EV_MULTIPLICITY
		889	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		890	#endif
		891
		892	--signum;
		893
		894	if (signum < 0 \|\| signum >= signalmax)
		895	return;
		896
		897	signals [signum].gotsig = 0;
		898
		899	for (w = signals [signum].head; w; w = w->next)
		900	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		901	}
		902
		903	/*****************************************************************************/
		904
756	static ev_child *childs [EV_PID_HASHSIZE];	905	static WL childs [EV_PID_HASHSIZE];
757		906
758	#ifndef _WIN32	907	#ifndef _WIN32
759		908
760	static ev_signal childev;	909	static ev_signal childev;
		910
		911	#ifndef WIFCONTINUED
		912	# define WIFCONTINUED(status) 0
		913	#endif
761		914
762	void inline_speed	915	void inline_speed
763	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	916	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
764	{	917	{
765	ev_child *w;	918	ev_child *w;
		919	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
766		920
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	921	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
		922	{
768	if (w->pid == pid \|\| !w->pid)	923	if ((w->pid == pid \|\| !w->pid)
		924	&& (!traced \|\| (w->flags & 1)))
769	{	925	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	926	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	927	w->rpid = pid;
772	w->rstatus = status;	928	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	929	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	930	}
		931	}
775	}	932	}
776		933
777	#ifndef WCONTINUED	934	#ifndef WCONTINUED
778	# define WCONTINUED 0	935	# define WCONTINUED 0
779	#endif	936	#endif
…		…
876	}	1033	}
877		1034
878	unsigned int	1035	unsigned int
879	ev_embeddable_backends (void)	1036	ev_embeddable_backends (void)
880	{	1037	{
881	return EVBACKEND_EPOLL	1038	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
882	\| EVBACKEND_KQUEUE	1039
883	\| EVBACKEND_PORT;	1040	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1041	/* please fix it and tell me how to detect the fix */
		1042	flags &= ~EVBACKEND_EPOLL;
		1043
		1044	return flags;
884	}	1045	}
885		1046
886	unsigned int	1047	unsigned int
887	ev_backend (EV_P)	1048	ev_backend (EV_P)
888	{	1049	{
889	return backend;	1050	return backend;
		1051	}
		1052
		1053	unsigned int
		1054	ev_loop_count (EV_P)
		1055	{
		1056	return loop_count;
		1057	}
		1058
		1059	void
		1060	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1061	{
		1062	io_blocktime = interval;
		1063	}
		1064
		1065	void
		1066	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1067	{
		1068	timeout_blocktime = interval;
890	}	1069	}
891		1070
892	static void noinline	1071	static void noinline
893	loop_init (EV_P_ unsigned int flags)	1072	loop_init (EV_P_ unsigned int flags)
894	{	1073	{
…		…
905	ev_rt_now = ev_time ();	1084	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	1085	mn_now = get_clock ();
907	now_floor = mn_now;	1086	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	1087	rtmn_diff = ev_rt_now - mn_now;
909		1088
		1089	io_blocktime = 0.;
		1090	timeout_blocktime = 0.;
		1091
		1092	/* pid check not overridable via env */
		1093	#ifndef _WIN32
		1094	if (flags & EVFLAG_FORKCHECK)
		1095	curpid = getpid ();
		1096	#endif
		1097
910	if (!(flags & EVFLAG_NOENV)	1098	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	1099	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	1100	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	1101	flags = atoi (getenv ("LIBEV_FLAGS"));
914		1102
…		…
935	#endif	1123	#endif
936	#if EV_USE_SELECT	1124	#if EV_USE_SELECT
937	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1125	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
938	#endif	1126	#endif
939		1127
940	ev_init (&sigev, sigcb);	1128	ev_init (&pipeev, pipecb);
941	ev_set_priority (&sigev, EV_MAXPRI);	1129	ev_set_priority (&pipeev, EV_MAXPRI);
942	}	1130	}
943	}	1131	}
944		1132
945	static void noinline	1133	static void noinline
946	loop_destroy (EV_P)	1134	loop_destroy (EV_P)
947	{	1135	{
948	int i;	1136	int i;
		1137
		1138	if (ev_is_active (&pipeev))
		1139	{
		1140	ev_ref (EV_A); /* signal watcher */
		1141	ev_io_stop (EV_A_ &pipeev);
		1142
		1143	close (evpipe [0]); evpipe [0] = 0;
		1144	close (evpipe [1]); evpipe [1] = 0;
		1145	}
949		1146
950	#if EV_USE_INOTIFY	1147	#if EV_USE_INOTIFY
951	if (fs_fd >= 0)	1148	if (fs_fd >= 0)
952	close (fs_fd);	1149	close (fs_fd);
953	#endif	1150	#endif
…		…
970	#if EV_USE_SELECT	1167	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1168	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1169	#endif
973		1170
974	for (i = NUMPRI; i--; )	1171	for (i = NUMPRI; i--; )
		1172	{
975	array_free (pending, [i]);	1173	array_free (pending, [i]);
		1174	#if EV_IDLE_ENABLE
		1175	array_free (idle, [i]);
		1176	#endif
		1177	}
		1178
		1179	ev_free (anfds); anfdmax = 0;
976		1180
977	/* have to use the microsoft-never-gets-it-right macro */	1181	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1182	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1183	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1184	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1185	array_free (periodic, EMPTY);
982	#endif	1186	#endif
		1187	#if EV_FORK_ENABLE
983	array_free (idle, EMPTY0);	1188	array_free (fork, EMPTY);
		1189	#endif
984	array_free (prepare, EMPTY0);	1190	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1191	array_free (check, EMPTY);
986		1192
987	backend = 0;	1193	backend = 0;
988	}	1194	}
		1195
		1196	void inline_size infy_fork (EV_P);
989		1197
990	void inline_size	1198	void inline_size
991	loop_fork (EV_P)	1199	loop_fork (EV_P)
992	{	1200	{
993	#if EV_USE_PORT	1201	#if EV_USE_PORT
…		…
997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1205	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
998	#endif	1206	#endif
999	#if EV_USE_EPOLL	1207	#if EV_USE_EPOLL
1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1208	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
1001	#endif	1209	#endif
		1210	#if EV_USE_INOTIFY
		1211	infy_fork (EV_A);
		1212	#endif
1002		1213
1003	if (ev_is_active (&sigev))	1214	if (ev_is_active (&pipeev))
1004	{	1215	{
1005	/* default loop */	1216	/* this "locks" the handlers against writing to the pipe */
		1217	gotsig = gotasync = 1;
1006		1218
1007	ev_ref (EV_A);	1219	ev_ref (EV_A);
1008	ev_io_stop (EV_A_ &sigev);	1220	ev_io_stop (EV_A_ &pipeev);
1009	close (sigpipe [0]);	1221	close (evpipe [0]);
1010	close (sigpipe [1]);	1222	close (evpipe [1]);
1011		1223
1012	while (pipe (sigpipe))
1013	syserr ("(libev) error creating pipe");
1014
1015	siginit (EV_A);	1224	evpipe_init (EV_A);
		1225	/* now iterate over everything, in case we missed something */
		1226	pipecb (EV_A_ &pipeev, EV_READ);
1016	}	1227	}
1017		1228
1018	postfork = 0;	1229	postfork = 0;
1019	}	1230	}
1020		1231
…		…
1042	}	1253	}
1043		1254
1044	void	1255	void
1045	ev_loop_fork (EV_P)	1256	ev_loop_fork (EV_P)
1046	{	1257	{
1047	postfork = 1;	1258	postfork = 1; /* must be in line with ev_default_fork */
1048	}	1259	}
1049		1260
1050	#endif	1261	#endif
1051		1262
1052	#if EV_MULTIPLICITY	1263	#if EV_MULTIPLICITY
…		…
1055	#else	1266	#else
1056	int	1267	int
1057	ev_default_loop (unsigned int flags)	1268	ev_default_loop (unsigned int flags)
1058	#endif	1269	#endif
1059	{	1270	{
1060	if (sigpipe [0] == sigpipe [1])
1061	if (pipe (sigpipe))
1062	return 0;
1063
1064	if (!ev_default_loop_ptr)	1271	if (!ev_default_loop_ptr)
1065	{	1272	{
1066	#if EV_MULTIPLICITY	1273	#if EV_MULTIPLICITY
1067	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1274	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
1068	#else	1275	#else
…		…
1071		1278
1072	loop_init (EV_A_ flags);	1279	loop_init (EV_A_ flags);
1073		1280
1074	if (ev_backend (EV_A))	1281	if (ev_backend (EV_A))
1075	{	1282	{
1076	siginit (EV_A);
1077
1078	#ifndef _WIN32	1283	#ifndef _WIN32
1079	ev_signal_init (&childev, childcb, SIGCHLD);	1284	ev_signal_init (&childev, childcb, SIGCHLD);
1080	ev_set_priority (&childev, EV_MAXPRI);	1285	ev_set_priority (&childev, EV_MAXPRI);
1081	ev_signal_start (EV_A_ &childev);	1286	ev_signal_start (EV_A_ &childev);
1082	ev_unref (EV_A); /* child watcher should not keep loop alive */	1287	ev_unref (EV_A); /* child watcher should not keep loop alive */
…		…
1099	#ifndef _WIN32	1304	#ifndef _WIN32
1100	ev_ref (EV_A); /* child watcher */	1305	ev_ref (EV_A); /* child watcher */
1101	ev_signal_stop (EV_A_ &childev);	1306	ev_signal_stop (EV_A_ &childev);
1102	#endif	1307	#endif
1103		1308
1104	ev_ref (EV_A); /* signal watcher */
1105	ev_io_stop (EV_A_ &sigev);
1106
1107	close (sigpipe [0]); sigpipe [0] = 0;
1108	close (sigpipe [1]); sigpipe [1] = 0;
1109
1110	loop_destroy (EV_A);	1309	loop_destroy (EV_A);
1111	}	1310	}
1112		1311
1113	void	1312	void
1114	ev_default_fork (void)	1313	ev_default_fork (void)
…		…
1116	#if EV_MULTIPLICITY	1315	#if EV_MULTIPLICITY
1117	struct ev_loop *loop = ev_default_loop_ptr;	1316	struct ev_loop *loop = ev_default_loop_ptr;
1118	#endif	1317	#endif
1119		1318
1120	if (backend)	1319	if (backend)
1121	postfork = 1;	1320	postfork = 1; /* must be in line with ev_loop_fork */
1122	}	1321	}
1123		1322
1124	/*****************************************************************************/	1323	/*****************************************************************************/
1125		1324
1126	int inline_size	1325	void
1127	any_pending (EV_P)	1326	ev_invoke (EV_P_ void *w, int revents)
1128	{	1327	{
1129	int pri;	1328	EV_CB_INVOKE ((W)w, revents);
1130
1131	for (pri = NUMPRI; pri--; )
1132	if (pendingcnt [pri])
1133	return 1;
1134
1135	return 0;
1136	}	1329	}
1137		1330
1138	void inline_speed	1331	void inline_speed
1139	call_pending (EV_P)	1332	call_pending (EV_P)
1140	{	1333	{
…		…
1158	void inline_size	1351	void inline_size
1159	timers_reify (EV_P)	1352	timers_reify (EV_P)
1160	{	1353	{
1161	while (timercnt && ((WT)timers [0])->at <= mn_now)	1354	while (timercnt && ((WT)timers [0])->at <= mn_now)
1162	{	1355	{
1163	ev_timer *w = timers [0];	1356	ev_timer w = (ev_timer )timers [0];
1164		1357
1165	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1358	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1166		1359
1167	/* first reschedule or stop timer */	1360	/* first reschedule or stop timer */
1168	if (w->repeat)	1361	if (w->repeat)
…		…
1171		1364
1172	((WT)w)->at += w->repeat;	1365	((WT)w)->at += w->repeat;
1173	if (((WT)w)->at < mn_now)	1366	if (((WT)w)->at < mn_now)
1174	((WT)w)->at = mn_now;	1367	((WT)w)->at = mn_now;
1175		1368
1176	downheap ((WT *)timers, timercnt, 0);	1369	downheap (timers, timercnt, 0);
1177	}	1370	}
1178	else	1371	else
1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1372	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1180		1373
1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1374	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1186	void inline_size	1379	void inline_size
1187	periodics_reify (EV_P)	1380	periodics_reify (EV_P)
1188	{	1381	{
1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1382	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1190	{	1383	{
1191	ev_periodic *w = periodics [0];	1384	ev_periodic w = (ev_periodic )periodics [0];
1192		1385
1193	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1386	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1194		1387
1195	/* first reschedule or stop timer */	1388	/* first reschedule or stop timer */
1196	if (w->reschedule_cb)	1389	if (w->reschedule_cb)
1197	{	1390	{
1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1391	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1199	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1392	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1200	downheap ((WT *)periodics, periodiccnt, 0);	1393	downheap (periodics, periodiccnt, 0);
1201	}	1394	}
1202	else if (w->interval)	1395	else if (w->interval)
1203	{	1396	{
1204	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1397	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1398	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1205	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1399	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1206	downheap ((WT *)periodics, periodiccnt, 0);	1400	downheap (periodics, periodiccnt, 0);
1207	}	1401	}
1208	else	1402	else
1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1403	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1210		1404
1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1405	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1218	int i;	1412	int i;
1219		1413
1220	/* adjust periodics after time jump */	1414	/* adjust periodics after time jump */
1221	for (i = 0; i < periodiccnt; ++i)	1415	for (i = 0; i < periodiccnt; ++i)
1222	{	1416	{
1223	ev_periodic *w = periodics [i];	1417	ev_periodic w = (ev_periodic )periodics [i];
1224		1418
1225	if (w->reschedule_cb)	1419	if (w->reschedule_cb)
1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1420	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1227	else if (w->interval)	1421	else if (w->interval)
1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1422	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1229	}	1423	}
1230		1424
1231	/* now rebuild the heap */	1425	/* now rebuild the heap */
1232	for (i = periodiccnt >> 1; i--; )	1426	for (i = periodiccnt >> 1; i--; )
1233	downheap ((WT *)periodics, periodiccnt, i);	1427	downheap (periodics, periodiccnt, i);
1234	}	1428	}
1235	#endif	1429	#endif
1236		1430
		1431	#if EV_IDLE_ENABLE
1237	int inline_size	1432	void inline_size
1238	time_update_monotonic (EV_P)	1433	idle_reify (EV_P)
1239	{	1434	{
		1435	if (expect_false (idleall))
		1436	{
		1437	int pri;
		1438
		1439	for (pri = NUMPRI; pri--; )
		1440	{
		1441	if (pendingcnt [pri])
		1442	break;
		1443
		1444	if (idlecnt [pri])
		1445	{
		1446	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1447	break;
		1448	}
		1449	}
		1450	}
		1451	}
		1452	#endif
		1453
		1454	void inline_speed
		1455	time_update (EV_P_ ev_tstamp max_block)
		1456	{
		1457	int i;
		1458
		1459	#if EV_USE_MONOTONIC
		1460	if (expect_true (have_monotonic))
		1461	{
		1462	ev_tstamp odiff = rtmn_diff;
		1463
1240	mn_now = get_clock ();	1464	mn_now = get_clock ();
1241		1465
		1466	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1467	/* interpolate in the meantime */
1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1468	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1243	{	1469	{
1244	ev_rt_now = rtmn_diff + mn_now;	1470	ev_rt_now = rtmn_diff + mn_now;
1245	return 0;	1471	return;
1246	}	1472	}
1247	else	1473
1248	{
1249	now_floor = mn_now;	1474	now_floor = mn_now;
1250	ev_rt_now = ev_time ();	1475	ev_rt_now = ev_time ();
1251	return 1;
1252	}
1253	}
1254		1476
1255	void inline_size	1477	/* loop a few times, before making important decisions.
1256	time_update (EV_P)	1478	* on the choice of "4": one iteration isn't enough,
1257	{	1479	* in case we get preempted during the calls to
1258	int i;	1480	* ev_time and get_clock. a second call is almost guaranteed
1259		1481	* to succeed in that case, though. and looping a few more times
1260	#if EV_USE_MONOTONIC	1482	* doesn't hurt either as we only do this on time-jumps or
1261	if (expect_true (have_monotonic))	1483	* in the unlikely event of having been preempted here.
1262	{	1484	*/
1263	if (time_update_monotonic (EV_A))	1485	for (i = 4; --i; )
1264	{	1486	{
1265	ev_tstamp odiff = rtmn_diff;
1266
1267	/* loop a few times, before making important decisions.
1268	* on the choice of "4": one iteration isn't enough,
1269	* in case we get preempted during the calls to
1270	* ev_time and get_clock. a second call is almost guarenteed
1271	* to succeed in that case, though. and looping a few more times
1272	* doesn't hurt either as we only do this on time-jumps or
1273	* in the unlikely event of getting preempted here.
1274	*/
1275	for (i = 4; --i; )
1276	{
1277	rtmn_diff = ev_rt_now - mn_now;	1487	rtmn_diff = ev_rt_now - mn_now;
1278		1488
1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1489	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1280	return; /* all is well */	1490	return; /* all is well */
1281		1491
1282	ev_rt_now = ev_time ();	1492	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1493	mn_now = get_clock ();
1284	now_floor = mn_now;	1494	now_floor = mn_now;
1285	}	1495	}
1286		1496
1287	# if EV_PERIODIC_ENABLE	1497	# if EV_PERIODIC_ENABLE
1288	periodics_reschedule (EV_A);	1498	periodics_reschedule (EV_A);
1289	# endif	1499	# endif
1290	/* no timer adjustment, as the monotonic clock doesn't jump */	1500	/* no timer adjustment, as the monotonic clock doesn't jump */
1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1501	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1292	}
1293	}	1502	}
1294	else	1503	else
1295	#endif	1504	#endif
1296	{	1505	{
1297	ev_rt_now = ev_time ();	1506	ev_rt_now = ev_time ();
1298		1507
1299	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1508	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1300	{	1509	{
1301	#if EV_PERIODIC_ENABLE	1510	#if EV_PERIODIC_ENABLE
1302	periodics_reschedule (EV_A);	1511	periodics_reschedule (EV_A);
1303	#endif	1512	#endif
1304
1305	/* adjust timers. this is easy, as the offset is the same for all */	1513	/* adjust timers. this is easy, as the offset is the same for all of them */
1306	for (i = 0; i < timercnt; ++i)	1514	for (i = 0; i < timercnt; ++i)
1307	((WT)timers [i])->at += ev_rt_now - mn_now;	1515	((WT)timers [i])->at += ev_rt_now - mn_now;
1308	}	1516	}
1309		1517
1310	mn_now = ev_rt_now;	1518	mn_now = ev_rt_now;
…		…
1330	{	1538	{
1331	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1539	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1332	? EVUNLOOP_ONE	1540	? EVUNLOOP_ONE
1333	: EVUNLOOP_CANCEL;	1541	: EVUNLOOP_CANCEL;
1334		1542
1335	while (activecnt)	1543	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1544
		1545	do
1336	{	1546	{
1337	/* we might have forked, so reify kernel state if necessary */	1547	#ifndef _WIN32
		1548	if (expect_false (curpid)) /* penalise the forking check even more */
		1549	if (expect_false (getpid () != curpid))
		1550	{
		1551	curpid = getpid ();
		1552	postfork = 1;
		1553	}
		1554	#endif
		1555
1338	#if EV_FORK_ENABLE	1556	#if EV_FORK_ENABLE
		1557	/* we might have forked, so queue fork handlers */
1339	if (expect_false (postfork))	1558	if (expect_false (postfork))
1340	if (forkcnt)	1559	if (forkcnt)
1341	{	1560	{
1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1561	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343	call_pending (EV_A);	1562	call_pending (EV_A);
1344	}	1563	}
1345	#endif	1564	#endif
1346		1565
1347	/* queue check watchers (and execute them) */	1566	/* queue prepare watchers (and execute them) */
1348	if (expect_false (preparecnt))	1567	if (expect_false (preparecnt))
1349	{	1568	{
1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1569	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1351	call_pending (EV_A);	1570	call_pending (EV_A);
1352	}	1571	}
1353		1572
		1573	if (expect_false (!activecnt))
		1574	break;
		1575
1354	/* we might have forked, so reify kernel state if necessary */	1576	/* we might have forked, so reify kernel state if necessary */
1355	if (expect_false (postfork))	1577	if (expect_false (postfork))
1356	loop_fork (EV_A);	1578	loop_fork (EV_A);
1357		1579
1358	/* update fd-related kernel structures */	1580	/* update fd-related kernel structures */
1359	fd_reify (EV_A);	1581	fd_reify (EV_A);
1360		1582
1361	/* calculate blocking time */	1583	/* calculate blocking time */
1362	{	1584	{
1363	double block;	1585	ev_tstamp waittime = 0.;
		1586	ev_tstamp sleeptime = 0.;
1364		1587
1365	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1588	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1366	block = 0.; /* do not block at all */
1367	else
1368	{	1589	{
1369	/* update time to cancel out callback processing overhead */	1590	/* update time to cancel out callback processing overhead */
1370	#if EV_USE_MONOTONIC
1371	if (expect_true (have_monotonic))
1372	time_update_monotonic (EV_A);	1591	time_update (EV_A_ 1e100);
1373	else
1374	#endif
1375	{
1376	ev_rt_now = ev_time ();
1377	mn_now = ev_rt_now;
1378	}
1379		1592
1380	block = MAX_BLOCKTIME;	1593	waittime = MAX_BLOCKTIME;
1381		1594
1382	if (timercnt)	1595	if (timercnt)
1383	{	1596	{
1384	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1597	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1385	if (block > to) block = to;	1598	if (waittime > to) waittime = to;
1386	}	1599	}
1387		1600
1388	#if EV_PERIODIC_ENABLE	1601	#if EV_PERIODIC_ENABLE
1389	if (periodiccnt)	1602	if (periodiccnt)
1390	{	1603	{
1391	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1604	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1392	if (block > to) block = to;	1605	if (waittime > to) waittime = to;
1393	}	1606	}
1394	#endif	1607	#endif
1395		1608
1396	if (expect_false (block < 0.)) block = 0.;	1609	if (expect_false (waittime < timeout_blocktime))
		1610	waittime = timeout_blocktime;
		1611
		1612	sleeptime = waittime - backend_fudge;
		1613
		1614	if (expect_true (sleeptime > io_blocktime))
		1615	sleeptime = io_blocktime;
		1616
		1617	if (sleeptime)
		1618	{
		1619	ev_sleep (sleeptime);
		1620	waittime -= sleeptime;
		1621	}
1397	}	1622	}
1398		1623
		1624	++loop_count;
1399	backend_poll (EV_A_ block);	1625	backend_poll (EV_A_ waittime);
		1626
		1627	/* update ev_rt_now, do magic */
		1628	time_update (EV_A_ waittime + sleeptime);
1400	}	1629	}
1401
1402	/* update ev_rt_now, do magic */
1403	time_update (EV_A);
1404		1630
1405	/* queue pending timers and reschedule them */	1631	/* queue pending timers and reschedule them */
1406	timers_reify (EV_A); /* relative timers called last */	1632	timers_reify (EV_A); /* relative timers called last */
1407	#if EV_PERIODIC_ENABLE	1633	#if EV_PERIODIC_ENABLE
1408	periodics_reify (EV_A); /* absolute timers called first */	1634	periodics_reify (EV_A); /* absolute timers called first */
1409	#endif	1635	#endif
1410		1636
		1637	#if EV_IDLE_ENABLE
1411	/* queue idle watchers unless other events are pending */	1638	/* queue idle watchers unless other events are pending */
1412	if (idlecnt && !any_pending (EV_A))	1639	idle_reify (EV_A);
1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1640	#endif
1414		1641
1415	/* queue check watchers, to be executed first */	1642	/* queue check watchers, to be executed first */
1416	if (expect_false (checkcnt))	1643	if (expect_false (checkcnt))
1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1644	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1418		1645
1419	call_pending (EV_A);	1646	call_pending (EV_A);
1420		1647
1421	if (expect_false (loop_done))
1422	break;
1423	}	1648	}
		1649	while (expect_true (activecnt && !loop_done));
1424		1650
1425	if (loop_done == EVUNLOOP_ONE)	1651	if (loop_done == EVUNLOOP_ONE)
1426	loop_done = EVUNLOOP_CANCEL;	1652	loop_done = EVUNLOOP_CANCEL;
1427	}	1653	}
1428		1654
…		…
1455	head = &(*head)->next;	1681	head = &(*head)->next;
1456	}	1682	}
1457	}	1683	}
1458		1684
1459	void inline_speed	1685	void inline_speed
1460	ev_clear_pending (EV_P_ W w)	1686	clear_pending (EV_P_ W w)
1461	{	1687	{
1462	if (w->pending)	1688	if (w->pending)
1463	{	1689	{
1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1690	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1465	w->pending = 0;	1691	w->pending = 0;
1466	}	1692	}
1467	}	1693	}
1468		1694
		1695	int
		1696	ev_clear_pending (EV_P_ void *w)
		1697	{
		1698	W w_ = (W)w;
		1699	int pending = w_->pending;
		1700
		1701	if (expect_true (pending))
		1702	{
		1703	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1704	w_->pending = 0;
		1705	p->w = 0;
		1706	return p->events;
		1707	}
		1708	else
		1709	return 0;
		1710	}
		1711
		1712	void inline_size
		1713	pri_adjust (EV_P_ W w)
		1714	{
		1715	int pri = w->priority;
		1716	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1717	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1718	w->priority = pri;
		1719	}
		1720
1469	void inline_speed	1721	void inline_speed
1470	ev_start (EV_P_ W w, int active)	1722	ev_start (EV_P_ W w, int active)
1471	{	1723	{
1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1724	pri_adjust (EV_A_ w);
1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1474
1475	w->active = active;	1725	w->active = active;
1476	ev_ref (EV_A);	1726	ev_ref (EV_A);
1477	}	1727	}
1478		1728
1479	void inline_size	1729	void inline_size
…		…
1483	w->active = 0;	1733	w->active = 0;
1484	}	1734	}
1485		1735
1486	/*****************************************************************************/	1736	/*****************************************************************************/
1487		1737
1488	void	1738	void noinline
1489	ev_io_start (EV_P_ ev_io *w)	1739	ev_io_start (EV_P_ ev_io *w)
1490	{	1740	{
1491	int fd = w->fd;	1741	int fd = w->fd;
1492		1742
1493	if (expect_false (ev_is_active (w)))	1743	if (expect_false (ev_is_active (w)))
…		…
1495		1745
1496	assert (("ev_io_start called with negative fd", fd >= 0));	1746	assert (("ev_io_start called with negative fd", fd >= 0));
1497		1747
1498	ev_start (EV_A_ (W)w, 1);	1748	ev_start (EV_A_ (W)w, 1);
1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1749	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1750	wlist_add (&anfds[fd].head, (WL)w);
1501		1751
1502	fd_change (EV_A_ fd);	1752	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1753	w->events &= ~EV_IOFDSET;
1503	}	1754	}
1504		1755
1505	void	1756	void noinline
1506	ev_io_stop (EV_P_ ev_io *w)	1757	ev_io_stop (EV_P_ ev_io *w)
1507	{	1758	{
1508	ev_clear_pending (EV_A_ (W)w);	1759	clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))	1760	if (expect_false (!ev_is_active (w)))
1510	return;	1761	return;
1511		1762
1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1763	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1513		1764
1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1765	wlist_del (&anfds[w->fd].head, (WL)w);
1515	ev_stop (EV_A_ (W)w);	1766	ev_stop (EV_A_ (W)w);
1516		1767
1517	fd_change (EV_A_ w->fd);	1768	fd_change (EV_A_ w->fd, 1);
1518	}	1769	}
1519		1770
1520	void	1771	void noinline
1521	ev_timer_start (EV_P_ ev_timer *w)	1772	ev_timer_start (EV_P_ ev_timer *w)
1522	{	1773	{
1523	if (expect_false (ev_is_active (w)))	1774	if (expect_false (ev_is_active (w)))
1524	return;	1775	return;
1525		1776
1526	((WT)w)->at += mn_now;	1777	((WT)w)->at += mn_now;
1527		1778
1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1779	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1529		1780
1530	ev_start (EV_A_ (W)w, ++timercnt);	1781	ev_start (EV_A_ (W)w, ++timercnt);
1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1782	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1532	timers [timercnt - 1] = w;	1783	timers [timercnt - 1] = (WT)w;
1533	upheap ((WT *)timers, timercnt - 1);	1784	upheap (timers, timercnt - 1);
1534		1785
1535	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1786	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1536	}	1787	}
1537		1788
1538	void	1789	void noinline
1539	ev_timer_stop (EV_P_ ev_timer *w)	1790	ev_timer_stop (EV_P_ ev_timer *w)
1540	{	1791	{
1541	ev_clear_pending (EV_A_ (W)w);	1792	clear_pending (EV_A_ (W)w);
1542	if (expect_false (!ev_is_active (w)))	1793	if (expect_false (!ev_is_active (w)))
1543	return;	1794	return;
1544		1795
1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1796	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1546		1797
1547	{	1798	{
1548	int active = ((W)w)->active;	1799	int active = ((W)w)->active;
1549		1800
1550	if (expect_true (--active < --timercnt))	1801	if (expect_true (--active < --timercnt))
1551	{	1802	{
1552	timers [active] = timers [timercnt];	1803	timers [active] = timers [timercnt];
1553	adjustheap ((WT *)timers, timercnt, active);	1804	adjustheap (timers, timercnt, active);
1554	}	1805	}
1555	}	1806	}
1556		1807
1557	((WT)w)->at -= mn_now;	1808	((WT)w)->at -= mn_now;
1558		1809
1559	ev_stop (EV_A_ (W)w);	1810	ev_stop (EV_A_ (W)w);
1560	}	1811	}
1561		1812
1562	void	1813	void noinline
1563	ev_timer_again (EV_P_ ev_timer *w)	1814	ev_timer_again (EV_P_ ev_timer *w)
1564	{	1815	{
1565	if (ev_is_active (w))	1816	if (ev_is_active (w))
1566	{	1817	{
1567	if (w->repeat)	1818	if (w->repeat)
1568	{	1819	{
1569	((WT)w)->at = mn_now + w->repeat;	1820	((WT)w)->at = mn_now + w->repeat;
1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1821	adjustheap (timers, timercnt, ((W)w)->active - 1);
1571	}	1822	}
1572	else	1823	else
1573	ev_timer_stop (EV_A_ w);	1824	ev_timer_stop (EV_A_ w);
1574	}	1825	}
1575	else if (w->repeat)	1826	else if (w->repeat)
…		…
1578	ev_timer_start (EV_A_ w);	1829	ev_timer_start (EV_A_ w);
1579	}	1830	}
1580	}	1831	}
1581		1832
1582	#if EV_PERIODIC_ENABLE	1833	#if EV_PERIODIC_ENABLE
1583	void	1834	void noinline
1584	ev_periodic_start (EV_P_ ev_periodic *w)	1835	ev_periodic_start (EV_P_ ev_periodic *w)
1585	{	1836	{
1586	if (expect_false (ev_is_active (w)))	1837	if (expect_false (ev_is_active (w)))
1587	return;	1838	return;
1588		1839
…		…
1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1841	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1591	else if (w->interval)	1842	else if (w->interval)
1592	{	1843	{
1593	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1844	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1594	/* this formula differs from the one in periodic_reify because we do not always round up */	1845	/* this formula differs from the one in periodic_reify because we do not always round up */
1595	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1846	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1596	}	1847	}
		1848	else
		1849	((WT)w)->at = w->offset;
1597		1850
1598	ev_start (EV_A_ (W)w, ++periodiccnt);	1851	ev_start (EV_A_ (W)w, ++periodiccnt);
1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1852	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1600	periodics [periodiccnt - 1] = w;	1853	periodics [periodiccnt - 1] = (WT)w;
1601	upheap ((WT *)periodics, periodiccnt - 1);	1854	upheap (periodics, periodiccnt - 1);
1602		1855
1603	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1856	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1604	}	1857	}
1605		1858
1606	void	1859	void noinline
1607	ev_periodic_stop (EV_P_ ev_periodic *w)	1860	ev_periodic_stop (EV_P_ ev_periodic *w)
1608	{	1861	{
1609	ev_clear_pending (EV_A_ (W)w);	1862	clear_pending (EV_A_ (W)w);
1610	if (expect_false (!ev_is_active (w)))	1863	if (expect_false (!ev_is_active (w)))
1611	return;	1864	return;
1612		1865
1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1866	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1614		1867
1615	{	1868	{
1616	int active = ((W)w)->active;	1869	int active = ((W)w)->active;
1617		1870
1618	if (expect_true (--active < --periodiccnt))	1871	if (expect_true (--active < --periodiccnt))
1619	{	1872	{
1620	periodics [active] = periodics [periodiccnt];	1873	periodics [active] = periodics [periodiccnt];
1621	adjustheap ((WT *)periodics, periodiccnt, active);	1874	adjustheap (periodics, periodiccnt, active);
1622	}	1875	}
1623	}	1876	}
1624		1877
1625	ev_stop (EV_A_ (W)w);	1878	ev_stop (EV_A_ (W)w);
1626	}	1879	}
1627		1880
1628	void	1881	void noinline
1629	ev_periodic_again (EV_P_ ev_periodic *w)	1882	ev_periodic_again (EV_P_ ev_periodic *w)
1630	{	1883	{
1631	/* TODO: use adjustheap and recalculation */	1884	/* TODO: use adjustheap and recalculation */
1632	ev_periodic_stop (EV_A_ w);	1885	ev_periodic_stop (EV_A_ w);
1633	ev_periodic_start (EV_A_ w);	1886	ev_periodic_start (EV_A_ w);
…		…
1636		1889
1637	#ifndef SA_RESTART	1890	#ifndef SA_RESTART
1638	# define SA_RESTART 0	1891	# define SA_RESTART 0
1639	#endif	1892	#endif
1640		1893
1641	void	1894	void noinline
1642	ev_signal_start (EV_P_ ev_signal *w)	1895	ev_signal_start (EV_P_ ev_signal *w)
1643	{	1896	{
1644	#if EV_MULTIPLICITY	1897	#if EV_MULTIPLICITY
1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1898	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1646	#endif	1899	#endif
1647	if (expect_false (ev_is_active (w)))	1900	if (expect_false (ev_is_active (w)))
1648	return;	1901	return;
1649		1902
1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1903	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1651		1904
		1905	evpipe_init (EV_A);
		1906
		1907	{
		1908	#ifndef _WIN32
		1909	sigset_t full, prev;
		1910	sigfillset (&full);
		1911	sigprocmask (SIG_SETMASK, &full, &prev);
		1912	#endif
		1913
		1914	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1915
		1916	#ifndef _WIN32
		1917	sigprocmask (SIG_SETMASK, &prev, 0);
		1918	#endif
		1919	}
		1920
1652	ev_start (EV_A_ (W)w, 1);	1921	ev_start (EV_A_ (W)w, 1);
1653	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1654	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1922	wlist_add (&signals [w->signum - 1].head, (WL)w);
1655		1923
1656	if (!((WL)w)->next)	1924	if (!((WL)w)->next)
1657	{	1925	{
1658	#if _WIN32	1926	#if _WIN32
1659	signal (w->signum, sighandler);	1927	signal (w->signum, sighandler);
…		…
1665	sigaction (w->signum, &sa, 0);	1933	sigaction (w->signum, &sa, 0);
1666	#endif	1934	#endif
1667	}	1935	}
1668	}	1936	}
1669		1937
1670	void	1938	void noinline
1671	ev_signal_stop (EV_P_ ev_signal *w)	1939	ev_signal_stop (EV_P_ ev_signal *w)
1672	{	1940	{
1673	ev_clear_pending (EV_A_ (W)w);	1941	clear_pending (EV_A_ (W)w);
1674	if (expect_false (!ev_is_active (w)))	1942	if (expect_false (!ev_is_active (w)))
1675	return;	1943	return;
1676		1944
1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1945	wlist_del (&signals [w->signum - 1].head, (WL)w);
1678	ev_stop (EV_A_ (W)w);	1946	ev_stop (EV_A_ (W)w);
1679		1947
1680	if (!signals [w->signum - 1].head)	1948	if (!signals [w->signum - 1].head)
1681	signal (w->signum, SIG_DFL);	1949	signal (w->signum, SIG_DFL);
1682	}	1950	}
…		…
1689	#endif	1957	#endif
1690	if (expect_false (ev_is_active (w)))	1958	if (expect_false (ev_is_active (w)))
1691	return;	1959	return;
1692		1960
1693	ev_start (EV_A_ (W)w, 1);	1961	ev_start (EV_A_ (W)w, 1);
1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1962	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1695	}	1963	}
1696		1964
1697	void	1965	void
1698	ev_child_stop (EV_P_ ev_child *w)	1966	ev_child_stop (EV_P_ ev_child *w)
1699	{	1967	{
1700	ev_clear_pending (EV_A_ (W)w);	1968	clear_pending (EV_A_ (W)w);
1701	if (expect_false (!ev_is_active (w)))	1969	if (expect_false (!ev_is_active (w)))
1702	return;	1970	return;
1703		1971
1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1972	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705	ev_stop (EV_A_ (W)w);	1973	ev_stop (EV_A_ (W)w);
1706	}	1974	}
1707		1975
1708	#if EV_STAT_ENABLE	1976	#if EV_STAT_ENABLE
1709		1977
…		…
1713	# endif	1981	# endif
1714		1982
1715	#define DEF_STAT_INTERVAL 5.0074891	1983	#define DEF_STAT_INTERVAL 5.0074891
1716	#define MIN_STAT_INTERVAL 0.1074891	1984	#define MIN_STAT_INTERVAL 0.1074891
1717		1985
1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1986	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719		1987
1720	#if EV_USE_INOTIFY	1988	#if EV_USE_INOTIFY
1721	# define EV_INOTIFY_BUFSIZE 8192	1989	# define EV_INOTIFY_BUFSIZE 8192
1722		1990
1723	static void noinline	1991	static void noinline
…		…
1831	ev_set_priority (&fs_w, EV_MAXPRI);	2099	ev_set_priority (&fs_w, EV_MAXPRI);
1832	ev_io_start (EV_A_ &fs_w);	2100	ev_io_start (EV_A_ &fs_w);
1833	}	2101	}
1834	}	2102	}
1835		2103
		2104	void inline_size
		2105	infy_fork (EV_P)
		2106	{
		2107	int slot;
		2108
		2109	if (fs_fd < 0)
		2110	return;
		2111
		2112	close (fs_fd);
		2113	fs_fd = inotify_init ();
		2114
		2115	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2116	{
		2117	WL w_ = fs_hash [slot].head;
		2118	fs_hash [slot].head = 0;
		2119
		2120	while (w_)
		2121	{
		2122	ev_stat w = (ev_stat )w_;
		2123	w_ = w_->next; /* lets us add this watcher */
		2124
		2125	w->wd = -1;
		2126
		2127	if (fs_fd >= 0)
		2128	infy_add (EV_A_ w); /* re-add, no matter what */
		2129	else
		2130	ev_timer_start (EV_A_ &w->timer);
		2131	}
		2132
		2133	}
		2134	}
		2135
1836	#endif	2136	#endif
1837		2137
1838	void	2138	void
1839	ev_stat_stat (EV_P_ ev_stat *w)	2139	ev_stat_stat (EV_P_ ev_stat *w)
1840	{	2140	{
…		…
1842	w->attr.st_nlink = 0;	2142	w->attr.st_nlink = 0;
1843	else if (!w->attr.st_nlink)	2143	else if (!w->attr.st_nlink)
1844	w->attr.st_nlink = 1;	2144	w->attr.st_nlink = 1;
1845	}	2145	}
1846		2146
1847	void noinline	2147	static void noinline
1848	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2148	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1849	{	2149	{
1850	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2150	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1851		2151
1852	/* we copy this here each the time so that */	2152	/* we copy this here each the time so that */
1853	/* prev has the old value when the callback gets invoked */	2153	/* prev has the old value when the callback gets invoked */
1854	w->prev = w->attr;	2154	w->prev = w->attr;
1855	ev_stat_stat (EV_A_ w);	2155	ev_stat_stat (EV_A_ w);
1856		2156
1857	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2157	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2158	if (
		2159	w->prev.st_dev != w->attr.st_dev
		2160	\|\| w->prev.st_ino != w->attr.st_ino
		2161	\|\| w->prev.st_mode != w->attr.st_mode
		2162	\|\| w->prev.st_nlink != w->attr.st_nlink
		2163	\|\| w->prev.st_uid != w->attr.st_uid
		2164	\|\| w->prev.st_gid != w->attr.st_gid
		2165	\|\| w->prev.st_rdev != w->attr.st_rdev
		2166	\|\| w->prev.st_size != w->attr.st_size
		2167	\|\| w->prev.st_atime != w->attr.st_atime
		2168	\|\| w->prev.st_mtime != w->attr.st_mtime
		2169	\|\| w->prev.st_ctime != w->attr.st_ctime
1858	{	2170	) {
1859	#if EV_USE_INOTIFY	2171	#if EV_USE_INOTIFY
1860	infy_del (EV_A_ w);	2172	infy_del (EV_A_ w);
1861	infy_add (EV_A_ w);	2173	infy_add (EV_A_ w);
1862	ev_stat_stat (EV_A_ w); /* avoid race... */	2174	ev_stat_stat (EV_A_ w); /* avoid race... */
1863	#endif	2175	#endif
…		…
1897	}	2209	}
1898		2210
1899	void	2211	void
1900	ev_stat_stop (EV_P_ ev_stat *w)	2212	ev_stat_stop (EV_P_ ev_stat *w)
1901	{	2213	{
1902	ev_clear_pending (EV_A_ (W)w);	2214	clear_pending (EV_A_ (W)w);
1903	if (expect_false (!ev_is_active (w)))	2215	if (expect_false (!ev_is_active (w)))
1904	return;	2216	return;
1905		2217
1906	#if EV_USE_INOTIFY	2218	#if EV_USE_INOTIFY
1907	infy_del (EV_A_ w);	2219	infy_del (EV_A_ w);
…		…
1910		2222
1911	ev_stop (EV_A_ (W)w);	2223	ev_stop (EV_A_ (W)w);
1912	}	2224	}
1913	#endif	2225	#endif
1914		2226
		2227	#if EV_IDLE_ENABLE
1915	void	2228	void
1916	ev_idle_start (EV_P_ ev_idle *w)	2229	ev_idle_start (EV_P_ ev_idle *w)
1917	{	2230	{
1918	if (expect_false (ev_is_active (w)))	2231	if (expect_false (ev_is_active (w)))
1919	return;	2232	return;
1920		2233
		2234	pri_adjust (EV_A_ (W)w);
		2235
		2236	{
		2237	int active = ++idlecnt [ABSPRI (w)];
		2238
		2239	++idleall;
1921	ev_start (EV_A_ (W)w, ++idlecnt);	2240	ev_start (EV_A_ (W)w, active);
		2241
1922	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2242	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1923	idles [idlecnt - 1] = w;	2243	idles [ABSPRI (w)][active - 1] = w;
		2244	}
1924	}	2245	}
1925		2246
1926	void	2247	void
1927	ev_idle_stop (EV_P_ ev_idle *w)	2248	ev_idle_stop (EV_P_ ev_idle *w)
1928	{	2249	{
1929	ev_clear_pending (EV_A_ (W)w);	2250	clear_pending (EV_A_ (W)w);
1930	if (expect_false (!ev_is_active (w)))	2251	if (expect_false (!ev_is_active (w)))
1931	return;	2252	return;
1932		2253
1933	{	2254	{
1934	int active = ((W)w)->active;	2255	int active = ((W)w)->active;
1935	idles [active - 1] = idles [--idlecnt];	2256
		2257	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1936	((W)idles [active - 1])->active = active;	2258	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2259
		2260	ev_stop (EV_A_ (W)w);
		2261	--idleall;
1937	}	2262	}
1938
1939	ev_stop (EV_A_ (W)w);
1940	}	2263	}
		2264	#endif
1941		2265
1942	void	2266	void
1943	ev_prepare_start (EV_P_ ev_prepare *w)	2267	ev_prepare_start (EV_P_ ev_prepare *w)
1944	{	2268	{
1945	if (expect_false (ev_is_active (w)))	2269	if (expect_false (ev_is_active (w)))
…		…
1951	}	2275	}
1952		2276
1953	void	2277	void
1954	ev_prepare_stop (EV_P_ ev_prepare *w)	2278	ev_prepare_stop (EV_P_ ev_prepare *w)
1955	{	2279	{
1956	ev_clear_pending (EV_A_ (W)w);	2280	clear_pending (EV_A_ (W)w);
1957	if (expect_false (!ev_is_active (w)))	2281	if (expect_false (!ev_is_active (w)))
1958	return;	2282	return;
1959		2283
1960	{	2284	{
1961	int active = ((W)w)->active;	2285	int active = ((W)w)->active;
…		…
1978	}	2302	}
1979		2303
1980	void	2304	void
1981	ev_check_stop (EV_P_ ev_check *w)	2305	ev_check_stop (EV_P_ ev_check *w)
1982	{	2306	{
1983	ev_clear_pending (EV_A_ (W)w);	2307	clear_pending (EV_A_ (W)w);
1984	if (expect_false (!ev_is_active (w)))	2308	if (expect_false (!ev_is_active (w)))
1985	return;	2309	return;
1986		2310
1987	{	2311	{
1988	int active = ((W)w)->active;	2312	int active = ((W)w)->active;
…		…
1995		2319
1996	#if EV_EMBED_ENABLE	2320	#if EV_EMBED_ENABLE
1997	void noinline	2321	void noinline
1998	ev_embed_sweep (EV_P_ ev_embed *w)	2322	ev_embed_sweep (EV_P_ ev_embed *w)
1999	{	2323	{
2000	ev_loop (w->loop, EVLOOP_NONBLOCK);	2324	ev_loop (w->other, EVLOOP_NONBLOCK);
2001	}	2325	}
2002		2326
2003	static void	2327	static void
2004	embed_cb (EV_P_ ev_io *io, int revents)	2328	embed_io_cb (EV_P_ ev_io *io, int revents)
2005	{	2329	{
2006	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2330	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2007		2331
2008	if (ev_cb (w))	2332	if (ev_cb (w))
2009	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2333	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2010	else	2334	else
2011	ev_embed_sweep (loop, w);	2335	ev_loop (w->other, EVLOOP_NONBLOCK);
2012	}	2336	}
		2337
		2338	static void
		2339	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2340	{
		2341	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2342
		2343	{
		2344	struct ev_loop *loop = w->other;
		2345
		2346	while (fdchangecnt)
		2347	{
		2348	fd_reify (EV_A);
		2349	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2350	}
		2351	}
		2352	}
		2353
		2354	#if 0
		2355	static void
		2356	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2357	{
		2358	ev_idle_stop (EV_A_ idle);
		2359	}
		2360	#endif
2013		2361
2014	void	2362	void
2015	ev_embed_start (EV_P_ ev_embed *w)	2363	ev_embed_start (EV_P_ ev_embed *w)
2016	{	2364	{
2017	if (expect_false (ev_is_active (w)))	2365	if (expect_false (ev_is_active (w)))
2018	return;	2366	return;
2019		2367
2020	{	2368	{
2021	struct ev_loop *loop = w->loop;	2369	struct ev_loop *loop = w->other;
2022	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2370	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2023	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2371	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2024	}	2372	}
2025		2373
2026	ev_set_priority (&w->io, ev_priority (w));	2374	ev_set_priority (&w->io, ev_priority (w));
2027	ev_io_start (EV_A_ &w->io);	2375	ev_io_start (EV_A_ &w->io);
2028		2376
		2377	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2378	ev_set_priority (&w->prepare, EV_MINPRI);
		2379	ev_prepare_start (EV_A_ &w->prepare);
		2380
		2381	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2382
2029	ev_start (EV_A_ (W)w, 1);	2383	ev_start (EV_A_ (W)w, 1);
2030	}	2384	}
2031		2385
2032	void	2386	void
2033	ev_embed_stop (EV_P_ ev_embed *w)	2387	ev_embed_stop (EV_P_ ev_embed *w)
2034	{	2388	{
2035	ev_clear_pending (EV_A_ (W)w);	2389	clear_pending (EV_A_ (W)w);
2036	if (expect_false (!ev_is_active (w)))	2390	if (expect_false (!ev_is_active (w)))
2037	return;	2391	return;
2038		2392
2039	ev_io_stop (EV_A_ &w->io);	2393	ev_io_stop (EV_A_ &w->io);
		2394	ev_prepare_stop (EV_A_ &w->prepare);
2040		2395
2041	ev_stop (EV_A_ (W)w);	2396	ev_stop (EV_A_ (W)w);
2042	}	2397	}
2043	#endif	2398	#endif
2044		2399
…		…
2055	}	2410	}
2056		2411
2057	void	2412	void
2058	ev_fork_stop (EV_P_ ev_fork *w)	2413	ev_fork_stop (EV_P_ ev_fork *w)
2059	{	2414	{
2060	ev_clear_pending (EV_A_ (W)w);	2415	clear_pending (EV_A_ (W)w);
2061	if (expect_false (!ev_is_active (w)))	2416	if (expect_false (!ev_is_active (w)))
2062	return;	2417	return;
2063		2418
2064	{	2419	{
2065	int active = ((W)w)->active;	2420	int active = ((W)w)->active;
…		…
2069		2424
2070	ev_stop (EV_A_ (W)w);	2425	ev_stop (EV_A_ (W)w);
2071	}	2426	}
2072	#endif	2427	#endif
2073		2428
		2429	#if EV_ASYNC_ENABLE
		2430	void
		2431	ev_async_start (EV_P_ ev_async *w)
		2432	{
		2433	if (expect_false (ev_is_active (w)))
		2434	return;
		2435
		2436	evpipe_init (EV_A);
		2437
		2438	ev_start (EV_A_ (W)w, ++asynccnt);
		2439	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		2440	asyncs [asynccnt - 1] = w;
		2441	}
		2442
		2443	void
		2444	ev_async_stop (EV_P_ ev_async *w)
		2445	{
		2446	clear_pending (EV_A_ (W)w);
		2447	if (expect_false (!ev_is_active (w)))
		2448	return;
		2449
		2450	{
		2451	int active = ((W)w)->active;
		2452	asyncs [active - 1] = asyncs [--asynccnt];
		2453	((W)asyncs [active - 1])->active = active;
		2454	}
		2455
		2456	ev_stop (EV_A_ (W)w);
		2457	}
		2458
		2459	void
		2460	ev_async_send (EV_P_ ev_async *w)
		2461	{
		2462	w->sent = 1;
		2463	evpipe_write (EV_A_ 0, 1);
		2464	}
		2465	#endif
		2466
2074	/*****************************************************************************/	2467	/*****************************************************************************/
2075		2468
2076	struct ev_once	2469	struct ev_once
2077	{	2470	{
2078	ev_io io;	2471	ev_io io;
…		…
2133	ev_timer_set (&once->to, timeout, 0.);	2526	ev_timer_set (&once->to, timeout, 0.);
2134	ev_timer_start (EV_A_ &once->to);	2527	ev_timer_start (EV_A_ &once->to);
2135	}	2528	}
2136	}	2529	}
2137		2530
		2531	#if EV_MULTIPLICITY
		2532	#include "ev_wrap.h"
		2533	#endif
		2534
2138	#ifdef __cplusplus	2535	#ifdef __cplusplus
2139	}	2536	}
2140	#endif	2537	#endif
2141		2538

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Comparing libev/ev.c (file contents): Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs. Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC