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

Comparing libev/ev.c (file contents):
Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC vs.
Revision 1.204 by root, Fri Jan 18 13:45:55 2008 UTC

…		…
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 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 sig_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	}
…		…
726	for (signum = signalmax; signum--; )	836	for (signum = signalmax; signum--; )
727	if (signals [signum].gotsig)	837	if (signals [signum].gotsig)
728	ev_feed_signal_event (EV_A_ signum + 1);	838	ev_feed_signal_event (EV_A_ signum + 1);
729	}	839	}
730		840
731	void inline_size	841	void inline_speed
732	fd_intern (int fd)	842	fd_intern (int fd)
733	{	843	{
734	#ifdef _WIN32	844	#ifdef _WIN32
735	int arg = 1;	845	int arg = 1;
736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	846	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	861	ev_unref (EV_A); /* child watcher should not keep loop alive */
752	}	862	}
753		863
754	/*****************************************************************************/	864	/*****************************************************************************/
755		865
756	static ev_child *childs [EV_PID_HASHSIZE];	866	static WL childs [EV_PID_HASHSIZE];
757		867
758	#ifndef _WIN32	868	#ifndef _WIN32
759		869
760	static ev_signal childev;	870	static ev_signal childev;
761		871
…		…
765	ev_child *w;	875	ev_child *w;
766		876
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	877	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
768	if (w->pid == pid \|\| !w->pid)	878	if (w->pid == pid \|\| !w->pid)
769	{	879	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	880	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	881	w->rpid = pid;
772	w->rstatus = status;	882	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	883	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	884	}
775	}	885	}
776		886
777	#ifndef WCONTINUED	887	#ifndef WCONTINUED
…		…
876	}	986	}
877		987
878	unsigned int	988	unsigned int
879	ev_embeddable_backends (void)	989	ev_embeddable_backends (void)
880	{	990	{
881	return EVBACKEND_EPOLL	991	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
882	\| EVBACKEND_KQUEUE	992
883	\| EVBACKEND_PORT;	993	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		994	/* please fix it and tell me how to detect the fix */
		995	flags &= ~EVBACKEND_EPOLL;
		996
		997	return flags;
884	}	998	}
885		999
886	unsigned int	1000	unsigned int
887	ev_backend (EV_P)	1001	ev_backend (EV_P)
888	{	1002	{
889	return backend;	1003	return backend;
		1004	}
		1005
		1006	unsigned int
		1007	ev_loop_count (EV_P)
		1008	{
		1009	return loop_count;
		1010	}
		1011
		1012	void
		1013	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1014	{
		1015	io_blocktime = interval;
		1016	}
		1017
		1018	void
		1019	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1020	{
		1021	timeout_blocktime = interval;
890	}	1022	}
891		1023
892	static void noinline	1024	static void noinline
893	loop_init (EV_P_ unsigned int flags)	1025	loop_init (EV_P_ unsigned int flags)
894	{	1026	{
…		…
905	ev_rt_now = ev_time ();	1037	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	1038	mn_now = get_clock ();
907	now_floor = mn_now;	1039	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	1040	rtmn_diff = ev_rt_now - mn_now;
909		1041
		1042	io_blocktime = 0.;
		1043	timeout_blocktime = 0.;
		1044
		1045	/* pid check not overridable via env */
		1046	#ifndef _WIN32
		1047	if (flags & EVFLAG_FORKCHECK)
		1048	curpid = getpid ();
		1049	#endif
		1050
910	if (!(flags & EVFLAG_NOENV)	1051	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	1052	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	1053	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	1054	flags = atoi (getenv ("LIBEV_FLAGS"));
914		1055
…		…
970	#if EV_USE_SELECT	1111	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1112	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1113	#endif
973		1114
974	for (i = NUMPRI; i--; )	1115	for (i = NUMPRI; i--; )
		1116	{
975	array_free (pending, [i]);	1117	array_free (pending, [i]);
		1118	#if EV_IDLE_ENABLE
		1119	array_free (idle, [i]);
		1120	#endif
		1121	}
		1122
		1123	ev_free (anfds); anfdmax = 0;
976		1124
977	/* have to use the microsoft-never-gets-it-right macro */	1125	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1126	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1127	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1128	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1129	array_free (periodic, EMPTY);
982	#endif	1130	#endif
		1131	#if EV_FORK_ENABLE
983	array_free (idle, EMPTY0);	1132	array_free (fork, EMPTY);
		1133	#endif
984	array_free (prepare, EMPTY0);	1134	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1135	array_free (check, EMPTY);
986		1136
987	backend = 0;	1137	backend = 0;
988	}	1138	}
		1139
		1140	void inline_size infy_fork (EV_P);
989		1141
990	void inline_size	1142	void inline_size
991	loop_fork (EV_P)	1143	loop_fork (EV_P)
992	{	1144	{
993	#if EV_USE_PORT	1145	#if EV_USE_PORT
…		…
996	#if EV_USE_KQUEUE	1148	#if EV_USE_KQUEUE
997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1149	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
998	#endif	1150	#endif
999	#if EV_USE_EPOLL	1151	#if EV_USE_EPOLL
1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1152	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1153	#endif
		1154	#if EV_USE_INOTIFY
		1155	infy_fork (EV_A);
1001	#endif	1156	#endif
1002		1157
1003	if (ev_is_active (&sigev))	1158	if (ev_is_active (&sigev))
1004	{	1159	{
1005	/* default loop */	1160	/* default loop */
…		…
1011		1166
1012	while (pipe (sigpipe))	1167	while (pipe (sigpipe))
1013	syserr ("(libev) error creating pipe");	1168	syserr ("(libev) error creating pipe");
1014		1169
1015	siginit (EV_A);	1170	siginit (EV_A);
		1171	sigcb (EV_A_ &sigev, EV_READ);
1016	}	1172	}
1017		1173
1018	postfork = 0;	1174	postfork = 0;
1019	}	1175	}
1020		1176
…		…
1042	}	1198	}
1043		1199
1044	void	1200	void
1045	ev_loop_fork (EV_P)	1201	ev_loop_fork (EV_P)
1046	{	1202	{
1047	postfork = 1;	1203	postfork = 1; // must be in line with ev_default_fork
1048	}	1204	}
1049		1205
1050	#endif	1206	#endif
1051		1207
1052	#if EV_MULTIPLICITY	1208	#if EV_MULTIPLICITY
…		…
1116	#if EV_MULTIPLICITY	1272	#if EV_MULTIPLICITY
1117	struct ev_loop *loop = ev_default_loop_ptr;	1273	struct ev_loop *loop = ev_default_loop_ptr;
1118	#endif	1274	#endif
1119		1275
1120	if (backend)	1276	if (backend)
1121	postfork = 1;	1277	postfork = 1; // must be in line with ev_loop_fork
1122	}	1278	}
1123		1279
1124	/*****************************************************************************/	1280	/*****************************************************************************/
1125		1281
1126	int inline_size	1282	void
1127	any_pending (EV_P)	1283	ev_invoke (EV_P_ void *w, int revents)
1128	{	1284	{
1129	int pri;	1285	EV_CB_INVOKE ((W)w, revents);
1130
1131	for (pri = NUMPRI; pri--; )
1132	if (pendingcnt [pri])
1133	return 1;
1134
1135	return 0;
1136	}	1286	}
1137		1287
1138	void inline_speed	1288	void inline_speed
1139	call_pending (EV_P)	1289	call_pending (EV_P)
1140	{	1290	{
…		…
1158	void inline_size	1308	void inline_size
1159	timers_reify (EV_P)	1309	timers_reify (EV_P)
1160	{	1310	{
1161	while (timercnt && ((WT)timers [0])->at <= mn_now)	1311	while (timercnt && ((WT)timers [0])->at <= mn_now)
1162	{	1312	{
1163	ev_timer *w = timers [0];	1313	ev_timer w = (ev_timer )timers [0];
1164		1314
1165	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1315	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1166		1316
1167	/* first reschedule or stop timer */	1317	/* first reschedule or stop timer */
1168	if (w->repeat)	1318	if (w->repeat)
…		…
1171		1321
1172	((WT)w)->at += w->repeat;	1322	((WT)w)->at += w->repeat;
1173	if (((WT)w)->at < mn_now)	1323	if (((WT)w)->at < mn_now)
1174	((WT)w)->at = mn_now;	1324	((WT)w)->at = mn_now;
1175		1325
1176	downheap ((WT *)timers, timercnt, 0);	1326	downheap (timers, timercnt, 0);
1177	}	1327	}
1178	else	1328	else
1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1329	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1180		1330
1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1331	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1186	void inline_size	1336	void inline_size
1187	periodics_reify (EV_P)	1337	periodics_reify (EV_P)
1188	{	1338	{
1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1339	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1190	{	1340	{
1191	ev_periodic *w = periodics [0];	1341	ev_periodic w = (ev_periodic )periodics [0];
1192		1342
1193	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1343	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1194		1344
1195	/* first reschedule or stop timer */	1345	/* first reschedule or stop timer */
1196	if (w->reschedule_cb)	1346	if (w->reschedule_cb)
1197	{	1347	{
1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1348	((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));	1349	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1200	downheap ((WT *)periodics, periodiccnt, 0);	1350	downheap (periodics, periodiccnt, 0);
1201	}	1351	}
1202	else if (w->interval)	1352	else if (w->interval)
1203	{	1353	{
1204	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1354	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1355	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));	1356	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);	1357	downheap (periodics, periodiccnt, 0);
1207	}	1358	}
1208	else	1359	else
1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1360	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1210		1361
1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1362	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1218	int i;	1369	int i;
1219		1370
1220	/* adjust periodics after time jump */	1371	/* adjust periodics after time jump */
1221	for (i = 0; i < periodiccnt; ++i)	1372	for (i = 0; i < periodiccnt; ++i)
1222	{	1373	{
1223	ev_periodic *w = periodics [i];	1374	ev_periodic w = (ev_periodic )periodics [i];
1224		1375
1225	if (w->reschedule_cb)	1376	if (w->reschedule_cb)
1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1377	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1227	else if (w->interval)	1378	else if (w->interval)
1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1379	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1229	}	1380	}
1230		1381
1231	/* now rebuild the heap */	1382	/* now rebuild the heap */
1232	for (i = periodiccnt >> 1; i--; )	1383	for (i = periodiccnt >> 1; i--; )
1233	downheap ((WT *)periodics, periodiccnt, i);	1384	downheap (periodics, periodiccnt, i);
1234	}	1385	}
1235	#endif	1386	#endif
1236		1387
		1388	#if EV_IDLE_ENABLE
1237	int inline_size	1389	void inline_size
1238	time_update_monotonic (EV_P)	1390	idle_reify (EV_P)
1239	{	1391	{
		1392	if (expect_false (idleall))
		1393	{
		1394	int pri;
		1395
		1396	for (pri = NUMPRI; pri--; )
		1397	{
		1398	if (pendingcnt [pri])
		1399	break;
		1400
		1401	if (idlecnt [pri])
		1402	{
		1403	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1404	break;
		1405	}
		1406	}
		1407	}
		1408	}
		1409	#endif
		1410
		1411	void inline_speed
		1412	time_update (EV_P_ ev_tstamp max_block)
		1413	{
		1414	int i;
		1415
		1416	#if EV_USE_MONOTONIC
		1417	if (expect_true (have_monotonic))
		1418	{
		1419	ev_tstamp odiff = rtmn_diff;
		1420
1240	mn_now = get_clock ();	1421	mn_now = get_clock ();
1241		1422
		1423	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1424	/* interpolate in the meantime */
1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1425	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1243	{	1426	{
1244	ev_rt_now = rtmn_diff + mn_now;	1427	ev_rt_now = rtmn_diff + mn_now;
1245	return 0;	1428	return;
1246	}	1429	}
1247	else	1430
1248	{
1249	now_floor = mn_now;	1431	now_floor = mn_now;
1250	ev_rt_now = ev_time ();	1432	ev_rt_now = ev_time ();
1251	return 1;
1252	}
1253	}
1254		1433
1255	void inline_size	1434	/* loop a few times, before making important decisions.
1256	time_update (EV_P)	1435	* on the choice of "4": one iteration isn't enough,
1257	{	1436	* in case we get preempted during the calls to
1258	int i;	1437	* ev_time and get_clock. a second call is almost guaranteed
1259		1438	* to succeed in that case, though. and looping a few more times
1260	#if EV_USE_MONOTONIC	1439	* doesn't hurt either as we only do this on time-jumps or
1261	if (expect_true (have_monotonic))	1440	* in the unlikely event of having been preempted here.
1262	{	1441	*/
1263	if (time_update_monotonic (EV_A))	1442	for (i = 4; --i; )
1264	{	1443	{
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;	1444	rtmn_diff = ev_rt_now - mn_now;
1278		1445
1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1446	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1280	return; /* all is well */	1447	return; /* all is well */
1281		1448
1282	ev_rt_now = ev_time ();	1449	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1450	mn_now = get_clock ();
1284	now_floor = mn_now;	1451	now_floor = mn_now;
1285	}	1452	}
1286		1453
1287	# if EV_PERIODIC_ENABLE	1454	# if EV_PERIODIC_ENABLE
1288	periodics_reschedule (EV_A);	1455	periodics_reschedule (EV_A);
1289	# endif	1456	# endif
1290	/* no timer adjustment, as the monotonic clock doesn't jump */	1457	/* no timer adjustment, as the monotonic clock doesn't jump */
1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1458	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1292	}
1293	}	1459	}
1294	else	1460	else
1295	#endif	1461	#endif
1296	{	1462	{
1297	ev_rt_now = ev_time ();	1463	ev_rt_now = ev_time ();
1298		1464
1299	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1465	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1300	{	1466	{
1301	#if EV_PERIODIC_ENABLE	1467	#if EV_PERIODIC_ENABLE
1302	periodics_reschedule (EV_A);	1468	periodics_reschedule (EV_A);
1303	#endif	1469	#endif
1304
1305	/* adjust timers. this is easy, as the offset is the same for all */	1470	/* adjust timers. this is easy, as the offset is the same for all of them */
1306	for (i = 0; i < timercnt; ++i)	1471	for (i = 0; i < timercnt; ++i)
1307	((WT)timers [i])->at += ev_rt_now - mn_now;	1472	((WT)timers [i])->at += ev_rt_now - mn_now;
1308	}	1473	}
1309		1474
1310	mn_now = ev_rt_now;	1475	mn_now = ev_rt_now;
…		…
1330	{	1495	{
1331	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1496	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1332	? EVUNLOOP_ONE	1497	? EVUNLOOP_ONE
1333	: EVUNLOOP_CANCEL;	1498	: EVUNLOOP_CANCEL;
1334		1499
1335	while (activecnt)	1500	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1501
		1502	do
1336	{	1503	{
1337	/* we might have forked, so reify kernel state if necessary */	1504	#ifndef _WIN32
		1505	if (expect_false (curpid)) /* penalise the forking check even more */
		1506	if (expect_false (getpid () != curpid))
		1507	{
		1508	curpid = getpid ();
		1509	postfork = 1;
		1510	}
		1511	#endif
		1512
1338	#if EV_FORK_ENABLE	1513	#if EV_FORK_ENABLE
		1514	/* we might have forked, so queue fork handlers */
1339	if (expect_false (postfork))	1515	if (expect_false (postfork))
1340	if (forkcnt)	1516	if (forkcnt)
1341	{	1517	{
1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1518	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343	call_pending (EV_A);	1519	call_pending (EV_A);
1344	}	1520	}
1345	#endif	1521	#endif
1346		1522
1347	/* queue check watchers (and execute them) */	1523	/* queue prepare watchers (and execute them) */
1348	if (expect_false (preparecnt))	1524	if (expect_false (preparecnt))
1349	{	1525	{
1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1526	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1351	call_pending (EV_A);	1527	call_pending (EV_A);
1352	}	1528	}
1353		1529
		1530	if (expect_false (!activecnt))
		1531	break;
		1532
1354	/* we might have forked, so reify kernel state if necessary */	1533	/* we might have forked, so reify kernel state if necessary */
1355	if (expect_false (postfork))	1534	if (expect_false (postfork))
1356	loop_fork (EV_A);	1535	loop_fork (EV_A);
1357		1536
1358	/* update fd-related kernel structures */	1537	/* update fd-related kernel structures */
1359	fd_reify (EV_A);	1538	fd_reify (EV_A);
1360		1539
1361	/* calculate blocking time */	1540	/* calculate blocking time */
1362	{	1541	{
1363	double block;	1542	ev_tstamp waittime = 0.;
		1543	ev_tstamp sleeptime = 0.;
1364		1544
1365	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1545	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1366	block = 0.; /* do not block at all */
1367	else
1368	{	1546	{
1369	/* update time to cancel out callback processing overhead */	1547	/* 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);	1548	time_update (EV_A_ 1e100);
1373	else
1374	#endif
1375	{
1376	ev_rt_now = ev_time ();
1377	mn_now = ev_rt_now;
1378	}
1379		1549
1380	block = MAX_BLOCKTIME;	1550	waittime = MAX_BLOCKTIME;
1381		1551
1382	if (timercnt)	1552	if (timercnt)
1383	{	1553	{
1384	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1554	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1385	if (block > to) block = to;	1555	if (waittime > to) waittime = to;
1386	}	1556	}
1387		1557
1388	#if EV_PERIODIC_ENABLE	1558	#if EV_PERIODIC_ENABLE
1389	if (periodiccnt)	1559	if (periodiccnt)
1390	{	1560	{
1391	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1561	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1392	if (block > to) block = to;	1562	if (waittime > to) waittime = to;
1393	}	1563	}
1394	#endif	1564	#endif
1395		1565
1396	if (expect_false (block < 0.)) block = 0.;	1566	if (expect_false (waittime < timeout_blocktime))
		1567	waittime = timeout_blocktime;
		1568
		1569	sleeptime = waittime - backend_fudge;
		1570
		1571	if (expect_true (sleeptime > io_blocktime))
		1572	sleeptime = io_blocktime;
		1573
		1574	if (sleeptime)
		1575	{
		1576	ev_sleep (sleeptime);
		1577	waittime -= sleeptime;
		1578	}
1397	}	1579	}
1398		1580
		1581	++loop_count;
1399	backend_poll (EV_A_ block);	1582	backend_poll (EV_A_ waittime);
		1583
		1584	/* update ev_rt_now, do magic */
		1585	time_update (EV_A_ waittime + sleeptime);
1400	}	1586	}
1401
1402	/* update ev_rt_now, do magic */
1403	time_update (EV_A);
1404		1587
1405	/* queue pending timers and reschedule them */	1588	/* queue pending timers and reschedule them */
1406	timers_reify (EV_A); /* relative timers called last */	1589	timers_reify (EV_A); /* relative timers called last */
1407	#if EV_PERIODIC_ENABLE	1590	#if EV_PERIODIC_ENABLE
1408	periodics_reify (EV_A); /* absolute timers called first */	1591	periodics_reify (EV_A); /* absolute timers called first */
1409	#endif	1592	#endif
1410		1593
		1594	#if EV_IDLE_ENABLE
1411	/* queue idle watchers unless other events are pending */	1595	/* queue idle watchers unless other events are pending */
1412	if (idlecnt && !any_pending (EV_A))	1596	idle_reify (EV_A);
1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1597	#endif
1414		1598
1415	/* queue check watchers, to be executed first */	1599	/* queue check watchers, to be executed first */
1416	if (expect_false (checkcnt))	1600	if (expect_false (checkcnt))
1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1601	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1418		1602
1419	call_pending (EV_A);	1603	call_pending (EV_A);
1420		1604
1421	if (expect_false (loop_done))
1422	break;
1423	}	1605	}
		1606	while (expect_true (activecnt && !loop_done));
1424		1607
1425	if (loop_done == EVUNLOOP_ONE)	1608	if (loop_done == EVUNLOOP_ONE)
1426	loop_done = EVUNLOOP_CANCEL;	1609	loop_done = EVUNLOOP_CANCEL;
1427	}	1610	}
1428		1611
…		…
1455	head = &(*head)->next;	1638	head = &(*head)->next;
1456	}	1639	}
1457	}	1640	}
1458		1641
1459	void inline_speed	1642	void inline_speed
1460	ev_clear_pending (EV_P_ W w)	1643	clear_pending (EV_P_ W w)
1461	{	1644	{
1462	if (w->pending)	1645	if (w->pending)
1463	{	1646	{
1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1647	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1465	w->pending = 0;	1648	w->pending = 0;
1466	}	1649	}
1467	}	1650	}
1468		1651
		1652	int
		1653	ev_clear_pending (EV_P_ void *w)
		1654	{
		1655	W w_ = (W)w;
		1656	int pending = w_->pending;
		1657
		1658	if (expect_true (pending))
		1659	{
		1660	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1661	w_->pending = 0;
		1662	p->w = 0;
		1663	return p->events;
		1664	}
		1665	else
		1666	return 0;
		1667	}
		1668
		1669	void inline_size
		1670	pri_adjust (EV_P_ W w)
		1671	{
		1672	int pri = w->priority;
		1673	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1674	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1675	w->priority = pri;
		1676	}
		1677
1469	void inline_speed	1678	void inline_speed
1470	ev_start (EV_P_ W w, int active)	1679	ev_start (EV_P_ W w, int active)
1471	{	1680	{
1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1681	pri_adjust (EV_A_ w);
1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1474
1475	w->active = active;	1682	w->active = active;
1476	ev_ref (EV_A);	1683	ev_ref (EV_A);
1477	}	1684	}
1478		1685
1479	void inline_size	1686	void inline_size
…		…
1483	w->active = 0;	1690	w->active = 0;
1484	}	1691	}
1485		1692
1486	/*****************************************************************************/	1693	/*****************************************************************************/
1487		1694
1488	void	1695	void noinline
1489	ev_io_start (EV_P_ ev_io *w)	1696	ev_io_start (EV_P_ ev_io *w)
1490	{	1697	{
1491	int fd = w->fd;	1698	int fd = w->fd;
1492		1699
1493	if (expect_false (ev_is_active (w)))	1700	if (expect_false (ev_is_active (w)))
…		…
1495		1702
1496	assert (("ev_io_start called with negative fd", fd >= 0));	1703	assert (("ev_io_start called with negative fd", fd >= 0));
1497		1704
1498	ev_start (EV_A_ (W)w, 1);	1705	ev_start (EV_A_ (W)w, 1);
1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1706	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1707	wlist_add (&anfds[fd].head, (WL)w);
1501		1708
1502	fd_change (EV_A_ fd);	1709	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1710	w->events &= ~EV_IOFDSET;
1503	}	1711	}
1504		1712
1505	void	1713	void noinline
1506	ev_io_stop (EV_P_ ev_io *w)	1714	ev_io_stop (EV_P_ ev_io *w)
1507	{	1715	{
1508	ev_clear_pending (EV_A_ (W)w);	1716	clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))	1717	if (expect_false (!ev_is_active (w)))
1510	return;	1718	return;
1511		1719
1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1720	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1513		1721
1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1722	wlist_del (&anfds[w->fd].head, (WL)w);
1515	ev_stop (EV_A_ (W)w);	1723	ev_stop (EV_A_ (W)w);
1516		1724
1517	fd_change (EV_A_ w->fd);	1725	fd_change (EV_A_ w->fd, 1);
1518	}	1726	}
1519		1727
1520	void	1728	void noinline
1521	ev_timer_start (EV_P_ ev_timer *w)	1729	ev_timer_start (EV_P_ ev_timer *w)
1522	{	1730	{
1523	if (expect_false (ev_is_active (w)))	1731	if (expect_false (ev_is_active (w)))
1524	return;	1732	return;
1525		1733
1526	((WT)w)->at += mn_now;	1734	((WT)w)->at += mn_now;
1527		1735
1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1736	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1529		1737
1530	ev_start (EV_A_ (W)w, ++timercnt);	1738	ev_start (EV_A_ (W)w, ++timercnt);
1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1739	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1532	timers [timercnt - 1] = w;	1740	timers [timercnt - 1] = (WT)w;
1533	upheap ((WT *)timers, timercnt - 1);	1741	upheap (timers, timercnt - 1);
1534		1742
1535	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1743	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1536	}	1744	}
1537		1745
1538	void	1746	void noinline
1539	ev_timer_stop (EV_P_ ev_timer *w)	1747	ev_timer_stop (EV_P_ ev_timer *w)
1540	{	1748	{
1541	ev_clear_pending (EV_A_ (W)w);	1749	clear_pending (EV_A_ (W)w);
1542	if (expect_false (!ev_is_active (w)))	1750	if (expect_false (!ev_is_active (w)))
1543	return;	1751	return;
1544		1752
1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1753	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1546		1754
1547	{	1755	{
1548	int active = ((W)w)->active;	1756	int active = ((W)w)->active;
1549		1757
1550	if (expect_true (--active < --timercnt))	1758	if (expect_true (--active < --timercnt))
1551	{	1759	{
1552	timers [active] = timers [timercnt];	1760	timers [active] = timers [timercnt];
1553	adjustheap ((WT *)timers, timercnt, active);	1761	adjustheap (timers, timercnt, active);
1554	}	1762	}
1555	}	1763	}
1556		1764
1557	((WT)w)->at -= mn_now;	1765	((WT)w)->at -= mn_now;
1558		1766
1559	ev_stop (EV_A_ (W)w);	1767	ev_stop (EV_A_ (W)w);
1560	}	1768	}
1561		1769
1562	void	1770	void noinline
1563	ev_timer_again (EV_P_ ev_timer *w)	1771	ev_timer_again (EV_P_ ev_timer *w)
1564	{	1772	{
1565	if (ev_is_active (w))	1773	if (ev_is_active (w))
1566	{	1774	{
1567	if (w->repeat)	1775	if (w->repeat)
1568	{	1776	{
1569	((WT)w)->at = mn_now + w->repeat;	1777	((WT)w)->at = mn_now + w->repeat;
1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1778	adjustheap (timers, timercnt, ((W)w)->active - 1);
1571	}	1779	}
1572	else	1780	else
1573	ev_timer_stop (EV_A_ w);	1781	ev_timer_stop (EV_A_ w);
1574	}	1782	}
1575	else if (w->repeat)	1783	else if (w->repeat)
…		…
1578	ev_timer_start (EV_A_ w);	1786	ev_timer_start (EV_A_ w);
1579	}	1787	}
1580	}	1788	}
1581		1789
1582	#if EV_PERIODIC_ENABLE	1790	#if EV_PERIODIC_ENABLE
1583	void	1791	void noinline
1584	ev_periodic_start (EV_P_ ev_periodic *w)	1792	ev_periodic_start (EV_P_ ev_periodic *w)
1585	{	1793	{
1586	if (expect_false (ev_is_active (w)))	1794	if (expect_false (ev_is_active (w)))
1587	return;	1795	return;
1588		1796
…		…
1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1798	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1591	else if (w->interval)	1799	else if (w->interval)
1592	{	1800	{
1593	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1801	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 */	1802	/* 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;	1803	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1596	}	1804	}
		1805	else
		1806	((WT)w)->at = w->offset;
1597		1807
1598	ev_start (EV_A_ (W)w, ++periodiccnt);	1808	ev_start (EV_A_ (W)w, ++periodiccnt);
1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1809	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1600	periodics [periodiccnt - 1] = w;	1810	periodics [periodiccnt - 1] = (WT)w;
1601	upheap ((WT *)periodics, periodiccnt - 1);	1811	upheap (periodics, periodiccnt - 1);
1602		1812
1603	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1813	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1604	}	1814	}
1605		1815
1606	void	1816	void noinline
1607	ev_periodic_stop (EV_P_ ev_periodic *w)	1817	ev_periodic_stop (EV_P_ ev_periodic *w)
1608	{	1818	{
1609	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1610	if (expect_false (!ev_is_active (w)))	1820	if (expect_false (!ev_is_active (w)))
1611	return;	1821	return;
1612		1822
1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1823	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1614		1824
1615	{	1825	{
1616	int active = ((W)w)->active;	1826	int active = ((W)w)->active;
1617		1827
1618	if (expect_true (--active < --periodiccnt))	1828	if (expect_true (--active < --periodiccnt))
1619	{	1829	{
1620	periodics [active] = periodics [periodiccnt];	1830	periodics [active] = periodics [periodiccnt];
1621	adjustheap ((WT *)periodics, periodiccnt, active);	1831	adjustheap (periodics, periodiccnt, active);
1622	}	1832	}
1623	}	1833	}
1624		1834
1625	ev_stop (EV_A_ (W)w);	1835	ev_stop (EV_A_ (W)w);
1626	}	1836	}
1627		1837
1628	void	1838	void noinline
1629	ev_periodic_again (EV_P_ ev_periodic *w)	1839	ev_periodic_again (EV_P_ ev_periodic *w)
1630	{	1840	{
1631	/* TODO: use adjustheap and recalculation */	1841	/* TODO: use adjustheap and recalculation */
1632	ev_periodic_stop (EV_A_ w);	1842	ev_periodic_stop (EV_A_ w);
1633	ev_periodic_start (EV_A_ w);	1843	ev_periodic_start (EV_A_ w);
…		…
1636		1846
1637	#ifndef SA_RESTART	1847	#ifndef SA_RESTART
1638	# define SA_RESTART 0	1848	# define SA_RESTART 0
1639	#endif	1849	#endif
1640		1850
1641	void	1851	void noinline
1642	ev_signal_start (EV_P_ ev_signal *w)	1852	ev_signal_start (EV_P_ ev_signal *w)
1643	{	1853	{
1644	#if EV_MULTIPLICITY	1854	#if EV_MULTIPLICITY
1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1855	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1646	#endif	1856	#endif
1647	if (expect_false (ev_is_active (w)))	1857	if (expect_false (ev_is_active (w)))
1648	return;	1858	return;
1649		1859
1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1860	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1651		1861
		1862	{
		1863	#ifndef _WIN32
		1864	sigset_t full, prev;
		1865	sigfillset (&full);
		1866	sigprocmask (SIG_SETMASK, &full, &prev);
		1867	#endif
		1868
		1869	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1870
		1871	#ifndef _WIN32
		1872	sigprocmask (SIG_SETMASK, &prev, 0);
		1873	#endif
		1874	}
		1875
1652	ev_start (EV_A_ (W)w, 1);	1876	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);	1877	wlist_add (&signals [w->signum - 1].head, (WL)w);
1655		1878
1656	if (!((WL)w)->next)	1879	if (!((WL)w)->next)
1657	{	1880	{
1658	#if _WIN32	1881	#if _WIN32
1659	signal (w->signum, sighandler);	1882	signal (w->signum, sighandler);
…		…
1665	sigaction (w->signum, &sa, 0);	1888	sigaction (w->signum, &sa, 0);
1666	#endif	1889	#endif
1667	}	1890	}
1668	}	1891	}
1669		1892
1670	void	1893	void noinline
1671	ev_signal_stop (EV_P_ ev_signal *w)	1894	ev_signal_stop (EV_P_ ev_signal *w)
1672	{	1895	{
1673	ev_clear_pending (EV_A_ (W)w);	1896	clear_pending (EV_A_ (W)w);
1674	if (expect_false (!ev_is_active (w)))	1897	if (expect_false (!ev_is_active (w)))
1675	return;	1898	return;
1676		1899
1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1900	wlist_del (&signals [w->signum - 1].head, (WL)w);
1678	ev_stop (EV_A_ (W)w);	1901	ev_stop (EV_A_ (W)w);
1679		1902
1680	if (!signals [w->signum - 1].head)	1903	if (!signals [w->signum - 1].head)
1681	signal (w->signum, SIG_DFL);	1904	signal (w->signum, SIG_DFL);
1682	}	1905	}
…		…
1689	#endif	1912	#endif
1690	if (expect_false (ev_is_active (w)))	1913	if (expect_false (ev_is_active (w)))
1691	return;	1914	return;
1692		1915
1693	ev_start (EV_A_ (W)w, 1);	1916	ev_start (EV_A_ (W)w, 1);
1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1917	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1695	}	1918	}
1696		1919
1697	void	1920	void
1698	ev_child_stop (EV_P_ ev_child *w)	1921	ev_child_stop (EV_P_ ev_child *w)
1699	{	1922	{
1700	ev_clear_pending (EV_A_ (W)w);	1923	clear_pending (EV_A_ (W)w);
1701	if (expect_false (!ev_is_active (w)))	1924	if (expect_false (!ev_is_active (w)))
1702	return;	1925	return;
1703		1926
1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1927	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705	ev_stop (EV_A_ (W)w);	1928	ev_stop (EV_A_ (W)w);
1706	}	1929	}
1707		1930
1708	#if EV_STAT_ENABLE	1931	#if EV_STAT_ENABLE
1709		1932
…		…
1713	# endif	1936	# endif
1714		1937
1715	#define DEF_STAT_INTERVAL 5.0074891	1938	#define DEF_STAT_INTERVAL 5.0074891
1716	#define MIN_STAT_INTERVAL 0.1074891	1939	#define MIN_STAT_INTERVAL 0.1074891
1717		1940
1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1941	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719		1942
1720	#if EV_USE_INOTIFY	1943	#if EV_USE_INOTIFY
1721	# define EV_INOTIFY_BUFSIZE ((PATH_MAX + sizeof (struct inotify_event)) + 2048)	1944	# define EV_INOTIFY_BUFSIZE 8192
1722		1945
1723	static void noinline	1946	static void noinline
1724	infy_add (EV_P_ ev_stat *w)	1947	infy_add (EV_P_ ev_stat *w)
1725	{	1948	{
1726	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	1949	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
…		…
1728	if (w->wd < 0)	1951	if (w->wd < 0)
1729	{	1952	{
1730	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	1953	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1731		1954
1732	/* monitor some parent directory for speedup hints */	1955	/* monitor some parent directory for speedup hints */
1733	if (errno == ENOENT \|\| errno == EACCES)	1956	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
1734	{	1957	{
1735	char path [PATH_MAX];	1958	char path [4096];
1736	strcpy (path, w->path);	1959	strcpy (path, w->path);
1737		1960
1738	do	1961	do
1739	{	1962	{
1740	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	1963	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
…		…
1744		1967
1745	if (!pend)	1968	if (!pend)
1746	break; /* whoops, no '/', complain to your admin */	1969	break; /* whoops, no '/', complain to your admin */
1747		1970
1748	*pend = 0;	1971	*pend = 0;
1749	w->wd = inotify_add_watch (fs_fd, path, IN_DELETE_SELF \| IN_CREATE \| IN_MOVED_TO \| IN_MASK_ADD);	1972	w->wd = inotify_add_watch (fs_fd, path, mask);
1750	}	1973	}
1751	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	1974	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
1752	}	1975	}
1753	}	1976	}
1754	else	1977	else
…		…
1759	}	1982	}
1760		1983
1761	static void noinline	1984	static void noinline
1762	infy_del (EV_P_ ev_stat *w)	1985	infy_del (EV_P_ ev_stat *w)
1763	{	1986	{
1764	WL w_;
1765	int slot;	1987	int slot;
1766	int wd = w->wd;	1988	int wd = w->wd;
1767		1989
1768	if (wd < 0)	1990	if (wd < 0)
1769	return;	1991	return;
…		…
1798	{	2020	{
1799	w->wd = -1;	2021	w->wd = -1;
1800	infy_add (EV_A_ w); /* re-add, no matter what */	2022	infy_add (EV_A_ w); /* re-add, no matter what */
1801	}	2023	}
1802		2024
1803	stat_timer_cb (EV_P_ &w->timer, 0);	2025	stat_timer_cb (EV_A_ &w->timer, 0);
1804	}	2026	}
1805	}	2027	}
1806	}	2028	}
1807	}	2029	}
1808		2030
…		…
1832	ev_set_priority (&fs_w, EV_MAXPRI);	2054	ev_set_priority (&fs_w, EV_MAXPRI);
1833	ev_io_start (EV_A_ &fs_w);	2055	ev_io_start (EV_A_ &fs_w);
1834	}	2056	}
1835	}	2057	}
1836		2058
		2059	void inline_size
		2060	infy_fork (EV_P)
		2061	{
		2062	int slot;
		2063
		2064	if (fs_fd < 0)
		2065	return;
		2066
		2067	close (fs_fd);
		2068	fs_fd = inotify_init ();
		2069
		2070	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2071	{
		2072	WL w_ = fs_hash [slot].head;
		2073	fs_hash [slot].head = 0;
		2074
		2075	while (w_)
		2076	{
		2077	ev_stat w = (ev_stat )w_;
		2078	w_ = w_->next; /* lets us add this watcher */
		2079
		2080	w->wd = -1;
		2081
		2082	if (fs_fd >= 0)
		2083	infy_add (EV_A_ w); /* re-add, no matter what */
		2084	else
		2085	ev_timer_start (EV_A_ &w->timer);
		2086	}
		2087
		2088	}
		2089	}
		2090
1837	#endif	2091	#endif
1838		2092
1839	void	2093	void
1840	ev_stat_stat (EV_P_ ev_stat *w)	2094	ev_stat_stat (EV_P_ ev_stat *w)
1841	{	2095	{
…		…
1843	w->attr.st_nlink = 0;	2097	w->attr.st_nlink = 0;
1844	else if (!w->attr.st_nlink)	2098	else if (!w->attr.st_nlink)
1845	w->attr.st_nlink = 1;	2099	w->attr.st_nlink = 1;
1846	}	2100	}
1847		2101
1848	void noinline	2102	static void noinline
1849	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2103	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1850	{	2104	{
1851	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2105	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1852		2106
1853	/* we copy this here each the time so that */	2107	/* we copy this here each the time so that */
1854	/* prev has the old value when the callback gets invoked */	2108	/* prev has the old value when the callback gets invoked */
1855	w->prev = w->attr;	2109	w->prev = w->attr;
1856	ev_stat_stat (EV_A_ w);	2110	ev_stat_stat (EV_A_ w);
1857		2111
1858	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2112	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2113	if (
		2114	w->prev.st_dev != w->attr.st_dev
		2115	\|\| w->prev.st_ino != w->attr.st_ino
		2116	\|\| w->prev.st_mode != w->attr.st_mode
		2117	\|\| w->prev.st_nlink != w->attr.st_nlink
		2118	\|\| w->prev.st_uid != w->attr.st_uid
		2119	\|\| w->prev.st_gid != w->attr.st_gid
		2120	\|\| w->prev.st_rdev != w->attr.st_rdev
		2121	\|\| w->prev.st_size != w->attr.st_size
		2122	\|\| w->prev.st_atime != w->attr.st_atime
		2123	\|\| w->prev.st_mtime != w->attr.st_mtime
		2124	\|\| w->prev.st_ctime != w->attr.st_ctime
1859	{	2125	) {
1860	#if EV_USE_INOTIFY	2126	#if EV_USE_INOTIFY
1861	infy_del (EV_A_ w);	2127	infy_del (EV_A_ w);
1862	infy_add (EV_A_ w);	2128	infy_add (EV_A_ w);
1863	ev_stat_stat (EV_A_ w); /* avoid race... */	2129	ev_stat_stat (EV_A_ w); /* avoid race... */
1864	#endif	2130	#endif
…		…
1898	}	2164	}
1899		2165
1900	void	2166	void
1901	ev_stat_stop (EV_P_ ev_stat *w)	2167	ev_stat_stop (EV_P_ ev_stat *w)
1902	{	2168	{
1903	ev_clear_pending (EV_A_ (W)w);	2169	clear_pending (EV_A_ (W)w);
1904	if (expect_false (!ev_is_active (w)))	2170	if (expect_false (!ev_is_active (w)))
1905	return;	2171	return;
1906		2172
1907	#if EV_USE_INOTIFY	2173	#if EV_USE_INOTIFY
1908	infy_del (EV_A_ w);	2174	infy_del (EV_A_ w);
…		…
1911		2177
1912	ev_stop (EV_A_ (W)w);	2178	ev_stop (EV_A_ (W)w);
1913	}	2179	}
1914	#endif	2180	#endif
1915		2181
		2182	#if EV_IDLE_ENABLE
1916	void	2183	void
1917	ev_idle_start (EV_P_ ev_idle *w)	2184	ev_idle_start (EV_P_ ev_idle *w)
1918	{	2185	{
1919	if (expect_false (ev_is_active (w)))	2186	if (expect_false (ev_is_active (w)))
1920	return;	2187	return;
1921		2188
		2189	pri_adjust (EV_A_ (W)w);
		2190
		2191	{
		2192	int active = ++idlecnt [ABSPRI (w)];
		2193
		2194	++idleall;
1922	ev_start (EV_A_ (W)w, ++idlecnt);	2195	ev_start (EV_A_ (W)w, active);
		2196
1923	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2197	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1924	idles [idlecnt - 1] = w;	2198	idles [ABSPRI (w)][active - 1] = w;
		2199	}
1925	}	2200	}
1926		2201
1927	void	2202	void
1928	ev_idle_stop (EV_P_ ev_idle *w)	2203	ev_idle_stop (EV_P_ ev_idle *w)
1929	{	2204	{
1930	ev_clear_pending (EV_A_ (W)w);	2205	clear_pending (EV_A_ (W)w);
1931	if (expect_false (!ev_is_active (w)))	2206	if (expect_false (!ev_is_active (w)))
1932	return;	2207	return;
1933		2208
1934	{	2209	{
1935	int active = ((W)w)->active;	2210	int active = ((W)w)->active;
1936	idles [active - 1] = idles [--idlecnt];	2211
		2212	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1937	((W)idles [active - 1])->active = active;	2213	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	--idleall;
1938	}	2217	}
1939
1940	ev_stop (EV_A_ (W)w);
1941	}	2218	}
		2219	#endif
1942		2220
1943	void	2221	void
1944	ev_prepare_start (EV_P_ ev_prepare *w)	2222	ev_prepare_start (EV_P_ ev_prepare *w)
1945	{	2223	{
1946	if (expect_false (ev_is_active (w)))	2224	if (expect_false (ev_is_active (w)))
…		…
1952	}	2230	}
1953		2231
1954	void	2232	void
1955	ev_prepare_stop (EV_P_ ev_prepare *w)	2233	ev_prepare_stop (EV_P_ ev_prepare *w)
1956	{	2234	{
1957	ev_clear_pending (EV_A_ (W)w);	2235	clear_pending (EV_A_ (W)w);
1958	if (expect_false (!ev_is_active (w)))	2236	if (expect_false (!ev_is_active (w)))
1959	return;	2237	return;
1960		2238
1961	{	2239	{
1962	int active = ((W)w)->active;	2240	int active = ((W)w)->active;
…		…
1979	}	2257	}
1980		2258
1981	void	2259	void
1982	ev_check_stop (EV_P_ ev_check *w)	2260	ev_check_stop (EV_P_ ev_check *w)
1983	{	2261	{
1984	ev_clear_pending (EV_A_ (W)w);	2262	clear_pending (EV_A_ (W)w);
1985	if (expect_false (!ev_is_active (w)))	2263	if (expect_false (!ev_is_active (w)))
1986	return;	2264	return;
1987		2265
1988	{	2266	{
1989	int active = ((W)w)->active;	2267	int active = ((W)w)->active;
…		…
1996		2274
1997	#if EV_EMBED_ENABLE	2275	#if EV_EMBED_ENABLE
1998	void noinline	2276	void noinline
1999	ev_embed_sweep (EV_P_ ev_embed *w)	2277	ev_embed_sweep (EV_P_ ev_embed *w)
2000	{	2278	{
2001	ev_loop (w->loop, EVLOOP_NONBLOCK);	2279	ev_loop (w->other, EVLOOP_NONBLOCK);
2002	}	2280	}
2003		2281
2004	static void	2282	static void
2005	embed_cb (EV_P_ ev_io *io, int revents)	2283	embed_io_cb (EV_P_ ev_io *io, int revents)
2006	{	2284	{
2007	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2285	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
2008		2286
2009	if (ev_cb (w))	2287	if (ev_cb (w))
2010	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2288	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2011	else	2289	else
2012	ev_embed_sweep (loop, w);	2290	ev_loop (w->other, EVLOOP_NONBLOCK);
2013	}	2291	}
		2292
		2293	static void
		2294	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2295	{
		2296	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2297
		2298	{
		2299	struct ev_loop *loop = w->other;
		2300
		2301	while (fdchangecnt)
		2302	{
		2303	fd_reify (EV_A);
		2304	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2305	}
		2306	}
		2307	}
		2308
		2309	#if 0
		2310	static void
		2311	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2312	{
		2313	ev_idle_stop (EV_A_ idle);
		2314	}
		2315	#endif
2014		2316
2015	void	2317	void
2016	ev_embed_start (EV_P_ ev_embed *w)	2318	ev_embed_start (EV_P_ ev_embed *w)
2017	{	2319	{
2018	if (expect_false (ev_is_active (w)))	2320	if (expect_false (ev_is_active (w)))
2019	return;	2321	return;
2020		2322
2021	{	2323	{
2022	struct ev_loop *loop = w->loop;	2324	struct ev_loop *loop = w->other;
2023	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2325	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2024	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2326	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2025	}	2327	}
2026		2328
2027	ev_set_priority (&w->io, ev_priority (w));	2329	ev_set_priority (&w->io, ev_priority (w));
2028	ev_io_start (EV_A_ &w->io);	2330	ev_io_start (EV_A_ &w->io);
2029		2331
		2332	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2333	ev_set_priority (&w->prepare, EV_MINPRI);
		2334	ev_prepare_start (EV_A_ &w->prepare);
		2335
		2336	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2337
2030	ev_start (EV_A_ (W)w, 1);	2338	ev_start (EV_A_ (W)w, 1);
2031	}	2339	}
2032		2340
2033	void	2341	void
2034	ev_embed_stop (EV_P_ ev_embed *w)	2342	ev_embed_stop (EV_P_ ev_embed *w)
2035	{	2343	{
2036	ev_clear_pending (EV_A_ (W)w);	2344	clear_pending (EV_A_ (W)w);
2037	if (expect_false (!ev_is_active (w)))	2345	if (expect_false (!ev_is_active (w)))
2038	return;	2346	return;
2039		2347
2040	ev_io_stop (EV_A_ &w->io);	2348	ev_io_stop (EV_A_ &w->io);
		2349	ev_prepare_stop (EV_A_ &w->prepare);
2041		2350
2042	ev_stop (EV_A_ (W)w);	2351	ev_stop (EV_A_ (W)w);
2043	}	2352	}
2044	#endif	2353	#endif
2045		2354
…		…
2056	}	2365	}
2057		2366
2058	void	2367	void
2059	ev_fork_stop (EV_P_ ev_fork *w)	2368	ev_fork_stop (EV_P_ ev_fork *w)
2060	{	2369	{
2061	ev_clear_pending (EV_A_ (W)w);	2370	clear_pending (EV_A_ (W)w);
2062	if (expect_false (!ev_is_active (w)))	2371	if (expect_false (!ev_is_active (w)))
2063	return;	2372	return;
2064		2373
2065	{	2374	{
2066	int active = ((W)w)->active;	2375	int active = ((W)w)->active;
…		…
2134	ev_timer_set (&once->to, timeout, 0.);	2443	ev_timer_set (&once->to, timeout, 0.);
2135	ev_timer_start (EV_A_ &once->to);	2444	ev_timer_start (EV_A_ &once->to);
2136	}	2445	}
2137	}	2446	}
2138		2447
		2448	#if EV_MULTIPLICITY
		2449	#include "ev_wrap.h"
		2450	#endif
		2451
2139	#ifdef __cplusplus	2452	#ifdef __cplusplus
2140	}	2453	}
2141	#endif	2454	#endif
2142		2455

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Comparing libev/ev.c (file contents): Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC vs. Revision 1.204 by root, Fri Jan 18 13:45:55 2008 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC vs.
Revision 1.204 by root, Fri Jan 18 13:45:55 2008 UTC