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

Comparing libev/ev.c (file contents):
Revision 1.8 by root, Wed Oct 31 00:32:33 2007 UTC vs.
Revision 1.16 by root, Wed Oct 31 13:57:34 2007 UTC

…		…
1	#include <math.h>	1	#include <math.h>
2	#include <stdlib.h>	2	#include <stdlib.h>
3	#include <unistd.h>	3	#include <unistd.h>
4	#include <fcntl.h>	4	#include <fcntl.h>
5	#include <signal.h>	5	#include <signal.h>
		6	#include <stddef.h>
6		7
7	#include <stdio.h>	8	#include <stdio.h>
8		9
9	#include <assert.h>	10	#include <assert.h>
10	#include <errno.h>	11	#include <errno.h>
11	#include <sys/time.h>	12	#include <sys/time.h>
12	#include <time.h>	13	#include <time.h>
13		14
14	#ifdef CLOCK_MONOTONIC
15	# define HAVE_MONOTONIC 1
16	#endif
17
18	#define HAVE_REALTIME 1
19	#define HAVE_EPOLL 1	15	#define HAVE_EPOLL 1
		16
		17	#ifndef HAVE_MONOTONIC
		18	# ifdef CLOCK_MONOTONIC
		19	# define HAVE_MONOTONIC 1
		20	# endif
		21	#endif
		22
		23	#ifndef HAVE_SELECT
20	#define HAVE_SELECT 1	24	# define HAVE_SELECT 1
		25	#endif
		26
		27	#ifndef HAVE_EPOLL
		28	# define HAVE_EPOLL 0
		29	#endif
		30
		31	#ifndef HAVE_REALTIME
		32	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */
		33	#endif
21		34
22	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	35	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
23	#define MAX_BLOCKTIME 60.	36	#define MAX_BLOCKTIME 60.
24		37
25	#include "ev.h"	38	#include "ev.h"
26		39
27	struct ev_watcher {	40	typedef struct ev_watcher *W;
28	EV_WATCHER (ev_watcher);
29	};
30
31	struct ev_watcher_list {	41	typedef struct ev_watcher_list *WL;
32	EV_WATCHER_LIST (ev_watcher_list);	42	typedef struct ev_watcher_time *WT;
33	};
34		43
35	static ev_tstamp now, diff; /* monotonic clock */	44	static ev_tstamp now, diff; /* monotonic clock */
36	ev_tstamp ev_now;	45	ev_tstamp ev_now;
37	int ev_method;	46	int ev_method;
38		47
75		84
76	#define array_needsize(base,cur,cnt,init) \	85	#define array_needsize(base,cur,cnt,init) \
77	if ((cnt) > cur) \	86	if ((cnt) > cur) \
78	{ \	87	{ \
79	int newcnt = cur ? cur << 1 : 16; \	88	int newcnt = cur ? cur << 1 : 16; \
80	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\
81	base = realloc (base, sizeof (base) (newcnt)); \	89	base = realloc (base, sizeof (base) (newcnt)); \
82	init (base + cur, newcnt - cur); \	90	init (base + cur, newcnt - cur); \
83	cur = newcnt; \	91	cur = newcnt; \
84	}	92	}
85		93
…		…
108	}	116	}
109	}	117	}
110		118
111	typedef struct	119	typedef struct
112	{	120	{
113	struct ev_watcher *w;	121	W w;
114	int events;	122	int events;
115	} ANPENDING;	123	} ANPENDING;
116		124
117	static ANPENDING *pendings;	125	static ANPENDING *pendings;
118	static int pendingmax, pendingcnt;	126	static int pendingmax, pendingcnt;
119		127
120	static void	128	static void
121	event (struct ev_watcher *w, int events)	129	event (W w, int events)
122	{	130	{
		131	if (w->active)
		132	{
123	w->pending = ++pendingcnt;	133	w->pending = ++pendingcnt;
124	array_needsize (pendings, pendingmax, pendingcnt, );	134	array_needsize (pendings, pendingmax, pendingcnt, );
125	pendings [pendingcnt - 1].w = w;	135	pendings [pendingcnt - 1].w = w;
126	pendings [pendingcnt - 1].events = events;	136	pendings [pendingcnt - 1].events = events;
		137	}
127	}	138	}
128		139
129	static void	140	static void
130	fd_event (int fd, int events)	141	fd_event (int fd, int events)
131	{	142	{
…		…
135	for (w = anfd->head; w; w = w->next)	146	for (w = anfd->head; w; w = w->next)
136	{	147	{
137	int ev = w->events & events;	148	int ev = w->events & events;
138		149
139	if (ev)	150	if (ev)
140	event ((struct ev_watcher *)w, ev);	151	event ((W)w, ev);
141	}	152	}
142	}	153	}
143		154
144	/*****************************************************************************/	155	static void
		156	queue_events (W *events, int eventcnt, int type)
		157	{
		158	int i;
145		159
		160	for (i = 0; i < eventcnt; ++i)
		161	event (events [i], type);
		162	}
		163
		164	/*****************************************************************************/
		165
146	static struct ev_timer **atimers;	166	static struct ev_timer **timers;
147	static int atimermax, atimercnt;	167	static int timermax, timercnt;
148		168
149	static struct ev_timer **rtimers;	169	static struct ev_periodic **periodics;
150	static int rtimermax, rtimercnt;	170	static int periodicmax, periodiccnt;
151		171
152	static void	172	static void
153	upheap (struct ev_timer **timers, int k)	173	upheap (WT *timers, int k)
154	{	174	{
155	struct ev_timer *w = timers [k];	175	WT w = timers [k];
156		176
157	while (k && timers [k >> 1]->at > w->at)	177	while (k && timers [k >> 1]->at > w->at)
158	{	178	{
159	timers [k] = timers [k >> 1];	179	timers [k] = timers [k >> 1];
160	timers [k]->active = k + 1;	180	timers [k]->active = k + 1;
…		…
165	timers [k]->active = k + 1;	185	timers [k]->active = k + 1;
166		186
167	}	187	}
168		188
169	static void	189	static void
170	downheap (struct ev_timer **timers, int N, int k)	190	downheap (WT *timers, int N, int k)
171	{	191	{
172	struct ev_timer *w = timers [k];	192	WT w = timers [k];
173		193
174	while (k < (N >> 1))	194	while (k < (N >> 1))
175	{	195	{
176	int j = k << 1;	196	int j = k << 1;
177		197
…		…
241	if (signals [sig].gotsig)	261	if (signals [sig].gotsig)
242	{	262	{
243	signals [sig].gotsig = 0;	263	signals [sig].gotsig = 0;
244		264
245	for (w = signals [sig].head; w; w = w->next)	265	for (w = signals [sig].head; w; w = w->next)
246	event ((struct ev_watcher *)w, EV_SIGNAL);	266	event ((W)w, EV_SIGNAL);
247	}	267	}
248	}	268	}
249		269
250	static void	270	static void
251	siginit (void)	271	siginit (void)
…		…
258	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	278	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
259		279
260	evio_set (&sigev, sigpipe [0], EV_READ);	280	evio_set (&sigev, sigpipe [0], EV_READ);
261	evio_start (&sigev);	281	evio_start (&sigev);
262	}	282	}
		283
		284	/*****************************************************************************/
		285
		286	static struct ev_idle **idles;
		287	static int idlemax, idlecnt;
		288
		289	static struct ev_check **checks;
		290	static int checkmax, checkcnt;
263		291
264	/*****************************************************************************/	292	/*****************************************************************************/
265		293
266	#if HAVE_EPOLL	294	#if HAVE_EPOLL
267	# include "ev_epoll.c"	295	# include "ev_epoll.c"
…		…
295	if (ev_method == EVMETHOD_NONE) select_init (flags);	323	if (ev_method == EVMETHOD_NONE) select_init (flags);
296	#endif	324	#endif
297		325
298	if (ev_method)	326	if (ev_method)
299	{	327	{
300	evw_init (&sigev, sigcb, 0);	328	evw_init (&sigev, sigcb);
301	siginit ();	329	siginit ();
302	}	330	}
303		331
304	return ev_method;	332	return ev_method;
305	}	333	}
306		334
307	/*****************************************************************************/	335	/*****************************************************************************/
308		336
309	void ev_prefork (void)	337	void ev_prefork (void)
310	{	338	{
		339	/* nop */
311	}	340	}
312		341
313	void ev_postfork_parent (void)	342	void ev_postfork_parent (void)
314	{	343	{
		344	/* nop */
315	}	345	}
316		346
317	void ev_postfork_child (void)	347	void ev_postfork_child (void)
318	{	348	{
319	#if HAVE_EPOLL	349	#if HAVE_EPOLL
…		…
328	siginit ();	358	siginit ();
329	}	359	}
330		360
331	/*****************************************************************************/	361	/*****************************************************************************/
332		362
333	static ev_hook hooks [EVHOOK_NUM];
334
335	void
336	ev_hook_register (int type, ev_hook hook)
337	{
338	hooks [type] = hook;
339	}
340
341	void
342	ev_hook_unregister (int type, ev_hook hook)
343	{
344	hooks [type] = 0;
345	}
346
347	static void
348	hook_call (int type)
349	{
350	if (hooks [type])
351	hooks [type] ();
352	}
353
354	static void	363	static void
355	fd_reify (void)	364	fd_reify (void)
356	{	365	{
357	int i;	366	int i;
358		367
…		…
395		404
396	pendingcnt = 0;	405	pendingcnt = 0;
397	}	406	}
398		407
399	static void	408	static void
400	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	409	timers_reify ()
401	{	410	{
402	while (timercnt && timers [0]->at <= now)	411	while (timercnt && timers [0]->at <= now)
403	{	412	{
404	struct ev_timer *w = timers [0];	413	struct ev_timer *w = timers [0];
		414
		415	event ((W)w, EV_TIMEOUT);
405		416
406	/* first reschedule or stop timer */	417	/* first reschedule or stop timer */
407	if (w->repeat)	418	if (w->repeat)
408	{	419	{
409	if (w->is_abs)
410	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
411	else
412	w->at = now + w->repeat;	420	w->at = now + w->repeat;
413		421	assert (("timer timeout in the past, negative repeat?", w->at > now));
414	assert (w->at > now);
415
416	downheap (timers, timercnt, 0);	422	downheap ((WT *)timers, timercnt, 0);
417	}	423	}
418	else	424	else
419	{
420	evtimer_stop (w); /* nonrepeating: stop timer */	425	evtimer_stop (w); /* nonrepeating: stop timer */
421	--timercnt; /* maybe pass by reference instead? */	426	}
		427	}
		428
		429	static void
		430	periodics_reify ()
		431	{
		432	while (periodiccnt && periodics [0]->at <= ev_now)
		433	{
		434	struct ev_periodic *w = periodics [0];
		435
		436	/* first reschedule or stop timer */
		437	if (w->interval)
422	}	438	{
		439	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		440	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));
		441	downheap ((WT *)periodics, periodiccnt, 0);
		442	}
		443	else
		444	evperiodic_stop (w); /* nonrepeating: stop timer */
423		445
424	event ((struct ev_watcher *)w, EV_TIMEOUT);	446	event ((W)w, EV_TIMEOUT);
		447	}
		448	}
		449
		450	static void
		451	periodics_reschedule (ev_tstamp diff)
		452	{
		453	int i;
		454
		455	/* adjust periodics after time jump */
		456	for (i = 0; i < periodiccnt; ++i)
		457	{
		458	struct ev_periodic *w = periodics [i];
		459
		460	if (w->interval)
		461	{
		462	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
		463
		464	if (fabs (diff) >= 1e-4)
		465	{
		466	evperiodic_stop (w);
		467	evperiodic_start (w);
		468
		469	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		470	}
		471	}
425	}	472	}
426	}	473	}
427		474
428	static void	475	static void
429	time_update ()	476	time_update ()
430	{	477	{
431	int i;	478	int i;
		479
432	ev_now = ev_time ();	480	ev_now = ev_time ();
433		481
434	if (have_monotonic)	482	if (have_monotonic)
435	{	483	{
436	ev_tstamp odiff = diff;	484	ev_tstamp odiff = diff;
437		485
438	/* detecting time jumps is much more difficult */
439	for (i = 2; --i; ) /* loop a few times, before making important decisions */	486	for (i = 4; --i; ) /* loop a few times, before making important decisions */
440	{	487	{
441	now = get_clock ();	488	now = get_clock ();
442	diff = ev_now - now;	489	diff = ev_now - now;
443		490
444	if (fabs (odiff - diff) < MIN_TIMEJUMP)	491	if (fabs (odiff - diff) < MIN_TIMEJUMP)
445	return; /* all is well */	492	return; /* all is well */
446		493
447	ev_now = ev_time ();	494	ev_now = ev_time ();
448	}	495	}
449		496
450	/* time jump detected, reschedule atimers */	497	periodics_reschedule (diff - odiff);
451	for (i = 0; i < atimercnt; ++i)	498	/* no timer adjustment, as the monotonic clock doesn't jump */
452	{
453	struct ev_timer *w = atimers [i];
454	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;
455	}
456	}	499	}
457	else	500	else
458	{	501	{
459	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	502	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
460	/* time jump detected, adjust rtimers */	503	{
		504	periodics_reschedule (ev_now - now);
		505
		506	/* adjust timers. this is easy, as the offset is the same for all */
461	for (i = 0; i < rtimercnt; ++i)	507	for (i = 0; i < timercnt; ++i)
462	rtimers [i]->at += ev_now - now;	508	timers [i]->at += diff;
		509	}
463		510
464	now = ev_now;	511	now = ev_now;
465	}	512	}
466	}	513	}
467		514
468	int ev_loop_done;	515	int ev_loop_done;
469		516
470	void ev_loop (int flags)	517	void ev_loop (int flags)
471	{	518	{
472	double block;	519	double block;
473	ev_loop_done = flags & EVLOOP_ONESHOT;	520	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;
		521
		522	if (checkcnt)
		523	{
		524	queue_events ((W *)checks, checkcnt, EV_CHECK);
		525	call_pending ();
		526	}
474		527
475	do	528	do
476	{	529	{
477	hook_call (EVHOOK_PREPOLL);
478
479	/* update fd-related kernel structures */	530	/* update fd-related kernel structures */
480	fd_reify ();	531	fd_reify ();
481		532
482	/* calculate blocking time */	533	/* calculate blocking time */
		534
		535	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */
		536	ev_now = ev_time ();
		537
483	if (flags & EVLOOP_NONBLOCK)	538	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
484	block = 0.;	539	block = 0.;
485	else	540	else
486	{	541	{
487	block = MAX_BLOCKTIME;	542	block = MAX_BLOCKTIME;
488		543
489	if (rtimercnt)	544	if (timercnt)
490	{	545	{
491	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	546	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;
492	if (block > to) block = to;	547	if (block > to) block = to;
493	}	548	}
494		549
495	if (atimercnt)	550	if (periodiccnt)
496	{	551	{
497	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	552	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
498	if (block > to) block = to;	553	if (block > to) block = to;
499	}	554	}
500		555
501	if (block < 0.) block = 0.;	556	if (block < 0.) block = 0.;
502	}	557	}
…		…
504	method_poll (block);	559	method_poll (block);
505		560
506	/* update ev_now, do magic */	561	/* update ev_now, do magic */
507	time_update ();	562	time_update ();
508		563
509	hook_call (EVHOOK_POSTPOLL);
510
511	/* put pending timers into pendign queue and reschedule them */	564	/* queue pending timers and reschedule them */
512	/* absolute timers first */	565	periodics_reify (); /* absolute timers first */
513	timers_reify (atimers, atimercnt, ev_now);
514	/* relative timers second */	566	timers_reify (); /* relative timers second */
515	timers_reify (rtimers, rtimercnt, now);	567
		568	/* queue idle watchers unless io or timers are pending */
		569	if (!pendingcnt)
		570	queue_events ((W *)idles, idlecnt, EV_IDLE);
		571
		572	/* queue check and possibly idle watchers */
		573	queue_events ((W *)checks, checkcnt, EV_CHECK);
516		574
517	call_pending ();	575	call_pending ();
518	}	576	}
519	while (!ev_loop_done);	577	while (!ev_loop_done);
520	}
521		578
522	/*****************************************************************************/	579	if (ev_loop_done != 2)
		580	ev_loop_done = 0;
		581	}
523		582
		583	/*****************************************************************************/
		584
524	static void	585	static void
525	wlist_add (struct ev_watcher_list *head, struct ev_watcher_list elem)	586	wlist_add (WL *head, WL elem)
526	{	587	{
527	elem->next = *head;	588	elem->next = *head;
528	*head = elem;	589	*head = elem;
529	}	590	}
530		591
531	static void	592	static void
532	wlist_del (struct ev_watcher_list *head, struct ev_watcher_list elem)	593	wlist_del (WL *head, WL elem)
533	{	594	{
534	while (*head)	595	while (*head)
535	{	596	{
536	if (*head == elem)	597	if (*head == elem)
537	{	598	{
…		…
542	head = &(*head)->next;	603	head = &(*head)->next;
543	}	604	}
544	}	605	}
545		606
546	static void	607	static void
547	ev_start (struct ev_watcher *w, int active)	608	ev_clear (W w)
548	{	609	{
		610	if (w->pending)
		611	{
		612	pendings [w->pending - 1].w = 0;
549	w->pending = 0;	613	w->pending = 0;
		614	}
		615	}
		616
		617	static void
		618	ev_start (W w, int active)
		619	{
550	w->active = active;	620	w->active = active;
551	}	621	}
552		622
553	static void	623	static void
554	ev_stop (struct ev_watcher *w)	624	ev_stop (W w)
555	{	625	{
556	if (w->pending)
557	pendings [w->pending - 1].w = 0;
558
559	w->active = 0;	626	w->active = 0;
560	/* nop */
561	}	627	}
562		628
563	/*****************************************************************************/	629	/*****************************************************************************/
564		630
565	void	631	void
…		…
568	if (ev_is_active (w))	634	if (ev_is_active (w))
569	return;	635	return;
570		636
571	int fd = w->fd;	637	int fd = w->fd;
572		638
573	ev_start ((struct ev_watcher *)w, 1);	639	ev_start ((W)w, 1);
574	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	640	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
575	wlist_add ((struct ev_watcher_list *)&anfds[fd].head, (struct ev_watcher_list )w);	641	wlist_add ((WL *)&anfds[fd].head, (WL)w);
576		642
577	++fdchangecnt;	643	++fdchangecnt;
578	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	644	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
579	fdchanges [fdchangecnt - 1] = fd;	645	fdchanges [fdchangecnt - 1] = fd;
580	}	646	}
581		647
582	void	648	void
583	evio_stop (struct ev_io *w)	649	evio_stop (struct ev_io *w)
584	{	650	{
		651	ev_clear ((W)w);
585	if (!ev_is_active (w))	652	if (!ev_is_active (w))
586	return;	653	return;
587		654
588	wlist_del ((struct ev_watcher_list *)&anfds[w->fd].head, (struct ev_watcher_list )w);	655	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
589	ev_stop ((struct ev_watcher *)w);	656	ev_stop ((W)w);
590		657
591	++fdchangecnt;	658	++fdchangecnt;
592	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	659	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
593	fdchanges [fdchangecnt - 1] = w->fd;	660	fdchanges [fdchangecnt - 1] = w->fd;
594	}	661	}
…		…
597	evtimer_start (struct ev_timer *w)	664	evtimer_start (struct ev_timer *w)
598	{	665	{
599	if (ev_is_active (w))	666	if (ev_is_active (w))
600	return;	667	return;
601		668
602	if (w->is_abs)	669	w->at += now;
603	{
604	/* this formula differs from the one in timer_reify becuse we do not round up */
605	if (w->repeat)
606	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;
607		670
608	ev_start ((struct ev_watcher *)w, ++atimercnt);	671	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));
		672
		673	ev_start ((W)w, ++timercnt);
609	array_needsize (atimers, atimermax, atimercnt, );	674	array_needsize (timers, timermax, timercnt, );
610	atimers [atimercnt - 1] = w;	675	timers [timercnt - 1] = w;
611	upheap (atimers, atimercnt - 1);	676	upheap ((WT *)timers, timercnt - 1);
612	}
613	else
614	{
615	w->at += now;
616
617	ev_start ((struct ev_watcher *)w, ++rtimercnt);
618	array_needsize (rtimers, rtimermax, rtimercnt, );
619	rtimers [rtimercnt - 1] = w;
620	upheap (rtimers, rtimercnt - 1);
621	}
622
623	}	677	}
624		678
625	void	679	void
626	evtimer_stop (struct ev_timer *w)	680	evtimer_stop (struct ev_timer *w)
627	{	681	{
		682	ev_clear ((W)w);
628	if (!ev_is_active (w))	683	if (!ev_is_active (w))
629	return;	684	return;
630		685
631	if (w->is_abs)
632	{
633	if (w->active < atimercnt--)	686	if (w->active < timercnt--)
634	{	687	{
635	atimers [w->active - 1] = atimers [atimercnt];	688	timers [w->active - 1] = timers [timercnt];
		689	downheap ((WT *)timers, timercnt, w->active - 1);
		690	}
		691
		692	w->at = w->repeat;
		693
		694	ev_stop ((W)w);
		695	}
		696
		697	void
		698	evtimer_again (struct ev_timer *w)
		699	{
		700	if (ev_is_active (w))
		701	{
		702	if (w->repeat)
		703	{
		704	w->at = now + w->repeat;
636	downheap (atimers, atimercnt, w->active - 1);	705	downheap ((WT *)timers, timercnt, w->active - 1);
637	}
638	}
639	else
640	{
641	if (w->active < rtimercnt--)
642	{	706	}
643	rtimers [w->active - 1] = rtimers [rtimercnt];	707	else
644	downheap (rtimers, rtimercnt, w->active - 1);	708	evtimer_stop (w);
645	}	709	}
		710	else if (w->repeat)
		711	evtimer_start (w);
		712	}
		713
		714	void
		715	evperiodic_start (struct ev_periodic *w)
		716	{
		717	if (ev_is_active (w))
		718	return;
		719
		720	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));
		721
		722	/* this formula differs from the one in periodic_reify because we do not always round up */
		723	if (w->interval)
		724	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
		725
		726	ev_start ((W)w, ++periodiccnt);
		727	array_needsize (periodics, periodicmax, periodiccnt, );
		728	periodics [periodiccnt - 1] = w;
		729	upheap ((WT *)periodics, periodiccnt - 1);
		730	}
		731
		732	void
		733	evperiodic_stop (struct ev_periodic *w)
		734	{
		735	ev_clear ((W)w);
		736	if (!ev_is_active (w))
		737	return;
		738
		739	if (w->active < periodiccnt--)
646	}	740	{
		741	periodics [w->active - 1] = periodics [periodiccnt];
		742	downheap ((WT *)periodics, periodiccnt, w->active - 1);
		743	}
647		744
648	ev_stop ((struct ev_watcher *)w);	745	ev_stop ((W)w);
649	}	746	}
650		747
651	void	748	void
652	evsignal_start (struct ev_signal *w)	749	evsignal_start (struct ev_signal *w)
653	{	750	{
654	if (ev_is_active (w))	751	if (ev_is_active (w))
655	return;	752	return;
656		753
657	ev_start ((struct ev_watcher *)w, 1);	754	ev_start ((W)w, 1);
658	array_needsize (signals, signalmax, w->signum, signals_init);	755	array_needsize (signals, signalmax, w->signum, signals_init);
659	wlist_add ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	756	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
660		757
661	if (!w->next)	758	if (!w->next)
662	{	759	{
663	struct sigaction sa;	760	struct sigaction sa;
664	sa.sa_handler = sighandler;	761	sa.sa_handler = sighandler;
…		…
669	}	766	}
670		767
671	void	768	void
672	evsignal_stop (struct ev_signal *w)	769	evsignal_stop (struct ev_signal *w)
673	{	770	{
		771	ev_clear ((W)w);
674	if (!ev_is_active (w))	772	if (!ev_is_active (w))
675	return;	773	return;
676		774
677	wlist_del ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	775	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
678	ev_stop ((struct ev_watcher *)w);	776	ev_stop ((W)w);
679		777
680	if (!signals [w->signum - 1].head)	778	if (!signals [w->signum - 1].head)
681	signal (w->signum, SIG_DFL);	779	signal (w->signum, SIG_DFL);
682	}	780	}
683		781
		782	void evidle_start (struct ev_idle *w)
		783	{
		784	if (ev_is_active (w))
		785	return;
		786
		787	ev_start ((W)w, ++idlecnt);
		788	array_needsize (idles, idlemax, idlecnt, );
		789	idles [idlecnt - 1] = w;
		790	}
		791
		792	void evidle_stop (struct ev_idle *w)
		793	{
		794	ev_clear ((W)w);
		795	if (ev_is_active (w))
		796	return;
		797
		798	idles [w->active - 1] = idles [--idlecnt];
		799	ev_stop ((W)w);
		800	}
		801
		802	void evcheck_start (struct ev_check *w)
		803	{
		804	if (ev_is_active (w))
		805	return;
		806
		807	ev_start ((W)w, ++checkcnt);
		808	array_needsize (checks, checkmax, checkcnt, );
		809	checks [checkcnt - 1] = w;
		810	}
		811
		812	void evcheck_stop (struct ev_check *w)
		813	{
		814	ev_clear ((W)w);
		815	if (ev_is_active (w))
		816	return;
		817
		818	checks [w->active - 1] = checks [--checkcnt];
		819	ev_stop ((W)w);
		820	}
		821
684	/*****************************************************************************/	822	/*****************************************************************************/
		823
		824	struct ev_once
		825	{
		826	struct ev_io io;
		827	struct ev_timer to;
		828	void (cb)(int revents, void arg);
		829	void *arg;
		830	};
		831
		832	static void
		833	once_cb (struct ev_once *once, int revents)
		834	{
		835	void (cb)(int revents, void arg) = once->cb;
		836	void *arg = once->arg;
		837
		838	evio_stop (&once->io);
		839	evtimer_stop (&once->to);
		840	free (once);
		841
		842	cb (revents, arg);
		843	}
		844
		845	static void
		846	once_cb_io (struct ev_io *w, int revents)
		847	{
		848	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		849	}
		850
		851	static void
		852	once_cb_to (struct ev_timer *w, int revents)
		853	{
		854	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		855	}
		856
		857	void
		858	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		859	{
		860	struct ev_once *once = malloc (sizeof (struct ev_once));
		861
		862	if (!once)
		863	cb (EV_ERROR, arg);
		864	else
		865	{
		866	once->cb = cb;
		867	once->arg = arg;
		868
		869	evw_init (&once->io, once_cb_io);
		870
		871	if (fd >= 0)
		872	{
		873	evio_set (&once->io, fd, events);
		874	evio_start (&once->io);
		875	}
		876
		877	evw_init (&once->to, once_cb_to);
		878
		879	if (timeout >= 0.)
		880	{
		881	evtimer_set (&once->to, timeout, 0.);
		882	evtimer_start (&once->to);
		883	}
		884	}
		885	}
		886
		887	/*****************************************************************************/
		888
685	#if 1	889	#if 0
		890
		891	struct ev_io wio;
686		892
687	static void	893	static void
688	sin_cb (struct ev_io *w, int revents)	894	sin_cb (struct ev_io *w, int revents)
689	{	895	{
690	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	896	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
700		906
701	static void	907	static void
702	scb (struct ev_signal *w, int revents)	908	scb (struct ev_signal *w, int revents)
703	{	909	{
704	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	910	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		911	evio_stop (&wio);
		912	evio_start (&wio);
		913	}
		914
		915	static void
		916	gcb (struct ev_signal *w, int revents)
		917	{
		918	fprintf (stderr, "generic %x\n", revents);
		919
705	}	920	}
706		921
707	int main (void)	922	int main (void)
708	{	923	{
709	struct ev_io sin;
710
711	ev_init (0);	924	ev_init (0);
712		925
713	evw_init (&sin, sin_cb, 55);
714	evio_set (&sin, 0, EV_READ);	926	evio_init (&wio, sin_cb, 0, EV_READ);
715	evio_start (&sin);	927	evio_start (&wio);
716		928
717	struct ev_timer t[10000];	929	struct ev_timer t[10000];
718		930
719	#if 1	931	#if 0
720	int i;	932	int i;
721	for (i = 0; i < 10000; ++i)	933	for (i = 0; i < 10000; ++i)
722	{	934	{
723	struct ev_timer *w = t + i;	935	struct ev_timer *w = t + i;
724	evw_init (w, ocb, i);	936	evw_init (w, ocb, i);
725	evtimer_set_abs (w, drand48 (), 0.99775533);	937	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
726	evtimer_start (w);	938	evtimer_start (w);
727	if (drand48 () < 0.5)	939	if (drand48 () < 0.5)
728	evtimer_stop (w);	940	evtimer_stop (w);
729	}	941	}
730	#endif	942	#endif
731		943
732	struct ev_timer t1;	944	struct ev_timer t1;
733	evw_init (&t1, ocb, 0);	945	evtimer_init (&t1, ocb, 5, 10);
734	evtimer_set_abs (&t1, 5, 10);
735	evtimer_start (&t1);	946	evtimer_start (&t1);
736		947
737	struct ev_signal sig;	948	struct ev_signal sig;
738	evw_init (&sig, scb, 65535);
739	evsignal_set (&sig, SIGQUIT);	949	evsignal_init (&sig, scb, SIGQUIT);
740	evsignal_start (&sig);	950	evsignal_start (&sig);
741		951
		952	struct ev_check cw;
		953	evcheck_init (&cw, gcb);
		954	evcheck_start (&cw);
		955
		956	struct ev_idle iw;
		957	evidle_init (&iw, gcb);
		958	evidle_start (&iw);
		959
742	ev_loop (0);	960	ev_loop (0);
743		961
744	return 0;	962	return 0;
745	}	963	}
746		964

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Comparing libev/ev.c (file contents): Revision 1.8 by root, Wed Oct 31 00:32:33 2007 UTC vs. Revision 1.16 by root, Wed Oct 31 13:57:34 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.8 by root, Wed Oct 31 00:32:33 2007 UTC vs.
Revision 1.16 by root, Wed Oct 31 13:57:34 2007 UTC