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

Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC

…		…
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	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.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#ifndef EV_STANDALONE	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
58		80
59	#ifndef EV_USE_SELECT	81	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	82	# define EV_USE_SELECT 1
61	#endif	83	#endif
62		84
63	#ifndef EV_USEV_POLL	85	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	87	#endif
66		88
67	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
69	#endif	91	#endif
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
		95	#endif
		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
73	#endif	103	#endif
74		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
…		…
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		149
		150	#if WIN32
		151	/* note: the comment below could not be substantiated, but what would I care */
		152	/* MSDN says this is required to handle SIGFPE */
		153	volatile double SIGFPE_REQ = 0.0f;
		154	#endif
		155
120	/*****************************************************************************/	156	/*****************************************************************************/
121		157
		158	static void (*syserr_cb)(void);
		159
		160	void ev_set_syserr_cb (void (*cb)(void))
		161	{
		162	syserr_cb = cb;
		163	}
		164
		165	static void
		166	syserr (void)
		167	{
		168	if (syserr_cb)
		169	syserr_cb ();
		170	else
		171	{
		172	perror ("libev");
		173	abort ();
		174	}
		175	}
		176
		177	static void (alloc)(void *ptr, long size);
		178
		179	void ev_set_allocator (void (cb)(void *ptr, long size))
		180	{
		181	alloc = cb;
		182	}
		183
		184	static void *
		185	ev_realloc (void *ptr, long size)
		186	{
		187	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		188
		189	if (!ptr && size)
		190	{
		191	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		192	abort ();
		193	}
		194
		195	return ptr;
		196	}
		197
		198	#define ev_malloc(size) ev_realloc (0, (size))
		199	#define ev_free(ptr) ev_realloc ((ptr), 0)
		200
		201	/*****************************************************************************/
		202
122	typedef struct	203	typedef struct
123	{	204	{
124	struct ev_watcher_list *head;	205	WL head;
125	unsigned char events;	206	unsigned char events;
126	unsigned char reify;	207	unsigned char reify;
127	} ANFD;	208	} ANFD;
128		209
129	typedef struct	210	typedef struct
…		…
187	return rt_now;	268	return rt_now;
188	}	269	}
189		270
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	271	#define array_roundsize(base,n) ((n) \| 4 & ~3)
191		272
192	#define array_needsize(base,cur,cnt,init) \	273	#define array_needsize(base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	274	if (expect_false ((cnt) > cur)) \
194	{ \	275	{ \
195	int newcnt = cur; \	276	int newcnt = cur; \
196	do \	277	do \
197	{ \	278	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	279	newcnt = array_roundsize (base, newcnt << 1); \
199	} \	280	} \
200	while ((cnt) > newcnt); \	281	while ((cnt) > newcnt); \
201	\	282	\
202	base = realloc (base, sizeof (base) (newcnt)); \	283	base = ev_realloc (base, sizeof (base) (newcnt)); \
203	init (base + cur, newcnt - cur); \	284	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	285	cur = newcnt; \
205	}	286	}
		287
		288	#define array_slim(stem) \
		289	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		290	{ \
		291	stem ## max = array_roundsize (stem ## cnt >> 1); \
		292	base = ev_realloc (base, sizeof (base) (stem ## max)); \
		293	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		294	}
		295
		296	#define array_free(stem, idx) \
		297	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		298
207	/*****************************************************************************/	299	/*****************************************************************************/
208		300
209	static void	301	static void
210	anfds_init (ANFD *base, int count)	302	anfds_init (ANFD *base, int count)
…		…
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	368	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	369	events \|= w->events;
278		370
279	anfd->reify = 0;	371	anfd->reify = 0;
280		372
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	373	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	374	anfd->events = events;
285	}
286	}	375	}
287		376
288	fdchangecnt = 0;	377	fdchangecnt = 0;
289	}	378	}
290		379
…		…
327		416
328	/* called on ENOMEM in select/poll to kill some fds and retry */	417	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	418	static void
330	fd_enomem (EV_P)	419	fd_enomem (EV_P)
331	{	420	{
332	int fd = anfdmax;	421	int fd;
333		422
334	while (fd--)	423	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	424	if (anfds [fd].events)
336	{	425	{
337	close (fd);
338	fd_kill (EV_A_ fd);	426	fd_kill (EV_A_ fd);
339	return;	427	return;
340	}	428	}
341	}	429	}
342		430
		431	/* susually called after fork if method needs to re-arm all fds from scratch */
		432	static void
		433	fd_rearm_all (EV_P)
		434	{
		435	int fd;
		436
		437	/* this should be highly optimised to not do anything but set a flag */
		438	for (fd = 0; fd < anfdmax; ++fd)
		439	if (anfds [fd].events)
		440	{
		441	anfds [fd].events = 0;
		442	fd_change (EV_A_ fd);
		443	}
		444	}
		445
343	/*****************************************************************************/	446	/*****************************************************************************/
344		447
345	static void	448	static void
346	upheap (WT *heap, int k)	449	upheap (WT *heap, int k)
347	{	450	{
348	WT w = heap [k];	451	WT w = heap [k];
349		452
350	while (k && heap [k >> 1]->at > w->at)	453	while (k && heap [k >> 1]->at > w->at)
351	{	454	{
352	heap [k] = heap [k >> 1];	455	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	456	((W)heap [k])->active = k + 1;
354	k >>= 1;	457	k >>= 1;
355	}	458	}
356		459
357	heap [k] = w;	460	heap [k] = w;
358	heap [k]->active = k + 1;	461	((W)heap [k])->active = k + 1;
359		462
360	}	463	}
361		464
362	static void	465	static void
363	downheap (WT *heap, int N, int k)	466	downheap (WT *heap, int N, int k)
…		…
373		476
374	if (w->at <= heap [j]->at)	477	if (w->at <= heap [j]->at)
375	break;	478	break;
376		479
377	heap [k] = heap [j];	480	heap [k] = heap [j];
378	heap [k]->active = k + 1;	481	((W)heap [k])->active = k + 1;
379	k = j;	482	k = j;
380	}	483	}
381		484
382	heap [k] = w;	485	heap [k] = w;
383	heap [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
384	}	487	}
385		488
386	/*****************************************************************************/	489	/*****************************************************************************/
387		490
388	typedef struct	491	typedef struct
389	{	492	{
390	struct ev_watcher_list *head;	493	WL head;
391	sig_atomic_t volatile gotsig;	494	sig_atomic_t volatile gotsig;
392	} ANSIG;	495	} ANSIG;
393		496
394	static ANSIG *signals;	497	static ANSIG *signals;
395	static int signalmax;	498	static int signalmax;
396		499
397	static int sigpipe [2];	500	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	501	static sig_atomic_t volatile gotsig;
		502	static struct ev_io sigev;
399		503
400	static void	504	static void
401	signals_init (ANSIG *base, int count)	505	signals_init (ANSIG *base, int count)
402	{	506	{
403	while (count--)	507	while (count--)
…		…
410	}	514	}
411		515
412	static void	516	static void
413	sighandler (int signum)	517	sighandler (int signum)
414	{	518	{
		519	#if WIN32
		520	signal (signum, sighandler);
		521	#endif
		522
415	signals [signum - 1].gotsig = 1;	523	signals [signum - 1].gotsig = 1;
416		524
417	if (!gotsig)	525	if (!gotsig)
418	{	526	{
419	int old_errno = errno;	527	int old_errno = errno;
…		…
424	}	532	}
425		533
426	static void	534	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	535	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	536	{
429	struct ev_watcher_list *w;	537	WL w;
430	int signum;	538	int signum;
431		539
432	read (sigpipe [0], &revents, 1);	540	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	541	gotsig = 0;
434		542
…		…
461		569
462	/*****************************************************************************/	570	/*****************************************************************************/
463		571
464	#ifndef WIN32	572	#ifndef WIN32
465		573
		574	static struct ev_child *childs [PID_HASHSIZE];
		575	static struct ev_signal childev;
		576
466	#ifndef WCONTINUED	577	#ifndef WCONTINUED
467	# define WCONTINUED 0	578	# define WCONTINUED 0
468	#endif	579	#endif
469		580
470	static void	581	static void
…		…
473	struct ev_child *w;	584	struct ev_child *w;
474		585
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	586	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	587	if (w->pid == pid \|\| !w->pid)
477	{	588	{
478	w->priority = sw->priority; /* need to do it now */	589	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	590	w->rpid = pid;
480	w->rstatus = status;	591	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	592	event (EV_A_ (W)w, EV_CHILD);
482	}	593	}
483	}	594	}
484		595
485	static void	596	static void
…		…
505	# include "ev_kqueue.c"	616	# include "ev_kqueue.c"
506	#endif	617	#endif
507	#if EV_USE_EPOLL	618	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	619	# include "ev_epoll.c"
509	#endif	620	#endif
510	#if EV_USEV_POLL	621	#if EV_USE_POLL
511	# include "ev_poll.c"	622	# include "ev_poll.c"
512	#endif	623	#endif
513	#if EV_USE_SELECT	624	#if EV_USE_SELECT
514	# include "ev_select.c"	625	# include "ev_select.c"
515	#endif	626	#endif
…		…
542	ev_method (EV_P)	653	ev_method (EV_P)
543	{	654	{
544	return method;	655	return method;
545	}	656	}
546		657
547	inline int	658	static void
548	loop_init (EV_P_ int methods)	659	loop_init (EV_P_ int methods)
549	{	660	{
550	if (!method)	661	if (!method)
551	{	662	{
552	#if EV_USE_MONOTONIC	663	#if EV_USE_MONOTONIC
…		…
560	rt_now = ev_time ();	671	rt_now = ev_time ();
561	mn_now = get_clock ();	672	mn_now = get_clock ();
562	now_floor = mn_now;	673	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	674	rtmn_diff = rt_now - mn_now;
564		675
565	if (pipe (sigpipe))
566	return 0;
567
568	if (methods == EVMETHOD_AUTO)	676	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	677	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	678	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	679	else
572	methods = EVMETHOD_ANY;	680	methods = EVMETHOD_ANY;
573		681
574	method = 0;	682	method = 0;
		683	#if EV_USE_WIN32
		684	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		685	#endif
575	#if EV_USE_KQUEUE	686	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	687	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	688	#endif
578	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	690	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	691	#endif
581	#if EV_USEV_POLL	692	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	693	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	694	#endif
584	#if EV_USE_SELECT	695	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	696	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	697	#endif
		698	}
		699	}
587		700
		701	void
		702	loop_destroy (EV_P)
		703	{
		704	int i;
		705
		706	#if EV_USE_WIN32
		707	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		708	#endif
		709	#if EV_USE_KQUEUE
		710	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		711	#endif
		712	#if EV_USE_EPOLL
		713	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		714	#endif
		715	#if EV_USE_POLL
		716	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		717	#endif
		718	#if EV_USE_SELECT
		719	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		720	#endif
		721
		722	for (i = NUMPRI; i--; )
		723	array_free (pending, [i]);
		724
		725	array_free (fdchange, );
		726	array_free (timer, );
		727	array_free (periodic, );
		728	array_free (idle, );
		729	array_free (prepare, );
		730	array_free (check, );
		731
		732	method = 0;
		733	/TODO/
		734	}
		735
		736	void
		737	loop_fork (EV_P)
		738	{
		739	/TODO/
		740	#if EV_USE_EPOLL
		741	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		742	#endif
		743	#if EV_USE_KQUEUE
		744	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		745	#endif
		746	}
		747
		748	#if EV_MULTIPLICITY
		749	struct ev_loop *
		750	ev_loop_new (int methods)
		751	{
		752	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		753
		754	memset (loop, 0, sizeof (struct ev_loop));
		755
		756	loop_init (EV_A_ methods);
		757
		758	if (ev_method (EV_A))
		759	return loop;
		760
		761	return 0;
		762	}
		763
		764	void
		765	ev_loop_destroy (EV_P)
		766	{
		767	loop_destroy (EV_A);
		768	ev_free (loop);
		769	}
		770
		771	void
		772	ev_loop_fork (EV_P)
		773	{
		774	loop_fork (EV_A);
		775	}
		776
		777	#endif
		778
		779	#if EV_MULTIPLICITY
		780	struct ev_loop default_loop_struct;
		781	static struct ev_loop *default_loop;
		782
		783	struct ev_loop *
		784	#else
		785	static int default_loop;
		786
		787	int
		788	#endif
		789	ev_default_loop (int methods)
		790	{
		791	if (sigpipe [0] == sigpipe [1])
		792	if (pipe (sigpipe))
		793	return 0;
		794
		795	if (!default_loop)
		796	{
		797	#if EV_MULTIPLICITY
		798	struct ev_loop *loop = default_loop = &default_loop_struct;
		799	#else
		800	default_loop = 1;
		801	#endif
		802
		803	loop_init (EV_A_ methods);
		804
588	if (method)	805	if (ev_method (EV_A))
589	{	806	{
590	ev_watcher_init (&sigev, sigcb);	807	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);	808	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	809	siginit (EV_A);
593		810
…		…
596	ev_set_priority (&childev, EV_MAXPRI);	813	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	814	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	815	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	816	#endif
600	}	817	}
		818	else
		819	default_loop = 0;
601	}	820	}
602		821
603	return method;	822	return default_loop;
604	}	823	}
605		824
		825	void
		826	ev_default_destroy (void)
		827	{
606	#if EV_MULTIPLICITY	828	#if EV_MULTIPLICITY
607		829	struct ev_loop *loop = default_loop;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	if (loop_init (EV_A_ methods))
614	return loop;
615
616	ev_loop_delete (loop);
617
618	return 0;
619	}
620
621	void
622	ev_loop_delete (EV_P)
623	{
624	/TODO/
625	free (loop);
626	}
627
628	#else
629
630	int
631	ev_init (int methods)
632	{
633	return loop_init (methods);
634	}
635
636	#endif	830	#endif
637		831
638	/*****************************************************************************/	832	ev_ref (EV_A); /* child watcher */
		833	ev_signal_stop (EV_A_ &childev);
639		834
640	void	835	ev_ref (EV_A); /* signal watcher */
641	ev_fork_prepare (void)	836	ev_io_stop (EV_A_ &sigev);
642	{
643	/* nop */
644	}
645		837
646	void	838	close (sigpipe [0]); sigpipe [0] = 0;
647	ev_fork_parent (void)	839	close (sigpipe [1]); sigpipe [1] = 0;
648	{
649	/* nop */
650	}
651		840
		841	loop_destroy (EV_A);
		842	}
		843
652	void	844	void
653	ev_fork_child (void)	845	ev_default_fork (void)
654	{	846	{
655	/TODO/
656	#if !EV_MULTIPLICITY	847	#if EV_MULTIPLICITY
657	#if EV_USE_EPOLL	848	struct ev_loop *loop = default_loop;
658	if (method == EVMETHOD_EPOLL)
659	epoll_postfork_child (EV_A);
660	#endif	849	#endif
		850
		851	loop_fork (EV_A);
661		852
662	ev_io_stop (EV_A_ &sigev);	853	ev_io_stop (EV_A_ &sigev);
663	close (sigpipe [0]);	854	close (sigpipe [0]);
664	close (sigpipe [1]);	855	close (sigpipe [1]);
665	pipe (sigpipe);	856	pipe (sigpipe);
		857
		858	ev_ref (EV_A); /* signal watcher */
666	siginit (EV_A);	859	siginit (EV_A);
667	#endif
668	}	860	}
669		861
670	/*****************************************************************************/	862	/*****************************************************************************/
671		863
672	static void	864	static void
…		…
688	}	880	}
689		881
690	static void	882	static void
691	timers_reify (EV_P)	883	timers_reify (EV_P)
692	{	884	{
693	while (timercnt && timers [0]->at <= mn_now)	885	while (timercnt && ((WT)timers [0])->at <= mn_now)
694	{	886	{
695	struct ev_timer *w = timers [0];	887	struct ev_timer *w = timers [0];
		888
		889	assert (("inactive timer on timer heap detected", ev_is_active (w)));
696		890
697	/* first reschedule or stop timer */	891	/* first reschedule or stop timer */
698	if (w->repeat)	892	if (w->repeat)
699	{	893	{
700	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	894	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
701	w->at = mn_now + w->repeat;	895	((WT)w)->at = mn_now + w->repeat;
702	downheap ((WT *)timers, timercnt, 0);	896	downheap ((WT *)timers, timercnt, 0);
703	}	897	}
704	else	898	else
705	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	899	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706		900
…		…
709	}	903	}
710		904
711	static void	905	static void
712	periodics_reify (EV_P)	906	periodics_reify (EV_P)
713	{	907	{
714	while (periodiccnt && periodics [0]->at <= rt_now)	908	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
715	{	909	{
716	struct ev_periodic *w = periodics [0];	910	struct ev_periodic *w = periodics [0];
		911
		912	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
717		913
718	/* first reschedule or stop timer */	914	/* first reschedule or stop timer */
719	if (w->interval)	915	if (w->interval)
720	{	916	{
721	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	917	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
722	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	918	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
723	downheap ((WT *)periodics, periodiccnt, 0);	919	downheap ((WT *)periodics, periodiccnt, 0);
724	}	920	}
725	else	921	else
726	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	922	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727		923
…		…
739	{	935	{
740	struct ev_periodic *w = periodics [i];	936	struct ev_periodic *w = periodics [i];
741		937
742	if (w->interval)	938	if (w->interval)
743	{	939	{
744	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	940	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
745		941
746	if (fabs (diff) >= 1e-4)	942	if (fabs (diff) >= 1e-4)
747	{	943	{
748	ev_periodic_stop (EV_A_ w);	944	ev_periodic_stop (EV_A_ w);
749	ev_periodic_start (EV_A_ w);	945	ev_periodic_start (EV_A_ w);
…		…
810	{	1006	{
811	periodics_reschedule (EV_A);	1007	periodics_reschedule (EV_A);
812		1008
813	/* adjust timers. this is easy, as the offset is the same for all */	1009	/* adjust timers. this is easy, as the offset is the same for all */
814	for (i = 0; i < timercnt; ++i)	1010	for (i = 0; i < timercnt; ++i)
815	timers [i]->at += rt_now - mn_now;	1011	((WT)timers [i])->at += rt_now - mn_now;
816	}	1012	}
817		1013
818	mn_now = rt_now;	1014	mn_now = rt_now;
819	}	1015	}
820	}	1016	}
…		…
871	{	1067	{
872	block = MAX_BLOCKTIME;	1068	block = MAX_BLOCKTIME;
873		1069
874	if (timercnt)	1070	if (timercnt)
875	{	1071	{
876	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1072	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
877	if (block > to) block = to;	1073	if (block > to) block = to;
878	}	1074	}
879		1075
880	if (periodiccnt)	1076	if (periodiccnt)
881	{	1077	{
882	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1078	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
883	if (block > to) block = to;	1079	if (block > to) block = to;
884	}	1080	}
885		1081
886	if (block < 0.) block = 0.;	1082	if (block < 0.) block = 0.;
887	}	1083	}
…		…
1004	ev_timer_start (EV_P_ struct ev_timer *w)	1200	ev_timer_start (EV_P_ struct ev_timer *w)
1005	{	1201	{
1006	if (ev_is_active (w))	1202	if (ev_is_active (w))
1007	return;	1203	return;
1008		1204
1009	w->at += mn_now;	1205	((WT)w)->at += mn_now;
1010		1206
1011	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1207	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012		1208
1013	ev_start (EV_A_ (W)w, ++timercnt);	1209	ev_start (EV_A_ (W)w, ++timercnt);
1014	array_needsize (timers, timermax, timercnt, );	1210	array_needsize (timers, timermax, timercnt, );
1015	timers [timercnt - 1] = w;	1211	timers [timercnt - 1] = w;
1016	upheap ((WT *)timers, timercnt - 1);	1212	upheap ((WT *)timers, timercnt - 1);
		1213
		1214	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1017	}	1215	}
1018		1216
1019	void	1217	void
1020	ev_timer_stop (EV_P_ struct ev_timer *w)	1218	ev_timer_stop (EV_P_ struct ev_timer *w)
1021	{	1219	{
1022	ev_clear_pending (EV_A_ (W)w);	1220	ev_clear_pending (EV_A_ (W)w);
1023	if (!ev_is_active (w))	1221	if (!ev_is_active (w))
1024	return;	1222	return;
1025		1223
		1224	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1225
1026	if (w->active < timercnt--)	1226	if (((W)w)->active < timercnt--)
1027	{	1227	{
1028	timers [w->active - 1] = timers [timercnt];	1228	timers [((W)w)->active - 1] = timers [timercnt];
1029	downheap ((WT *)timers, timercnt, w->active - 1);	1229	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1030	}	1230	}
1031		1231
1032	w->at = w->repeat;	1232	((WT)w)->at = w->repeat;
1033		1233
1034	ev_stop (EV_A_ (W)w);	1234	ev_stop (EV_A_ (W)w);
1035	}	1235	}
1036		1236
1037	void	1237	void
…		…
1039	{	1239	{
1040	if (ev_is_active (w))	1240	if (ev_is_active (w))
1041	{	1241	{
1042	if (w->repeat)	1242	if (w->repeat)
1043	{	1243	{
1044	w->at = mn_now + w->repeat;	1244	((WT)w)->at = mn_now + w->repeat;
1045	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1046	}	1246	}
1047	else	1247	else
1048	ev_timer_stop (EV_A_ w);	1248	ev_timer_stop (EV_A_ w);
1049	}	1249	}
1050	else if (w->repeat)	1250	else if (w->repeat)
…		…
1059		1259
1060	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1260	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1061		1261
1062	/* this formula differs from the one in periodic_reify because we do not always round up */	1262	/* this formula differs from the one in periodic_reify because we do not always round up */
1063	if (w->interval)	1263	if (w->interval)
1064	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1264	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1065		1265
1066	ev_start (EV_A_ (W)w, ++periodiccnt);	1266	ev_start (EV_A_ (W)w, ++periodiccnt);
1067	array_needsize (periodics, periodicmax, periodiccnt, );	1267	array_needsize (periodics, periodicmax, periodiccnt, );
1068	periodics [periodiccnt - 1] = w;	1268	periodics [periodiccnt - 1] = w;
1069	upheap ((WT *)periodics, periodiccnt - 1);	1269	upheap ((WT *)periodics, periodiccnt - 1);
		1270
		1271	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1070	}	1272	}
1071		1273
1072	void	1274	void
1073	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1275	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1074	{	1276	{
1075	ev_clear_pending (EV_A_ (W)w);	1277	ev_clear_pending (EV_A_ (W)w);
1076	if (!ev_is_active (w))	1278	if (!ev_is_active (w))
1077	return;	1279	return;
1078		1280
		1281	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1282
1079	if (w->active < periodiccnt--)	1283	if (((W)w)->active < periodiccnt--)
1080	{	1284	{
1081	periodics [w->active - 1] = periodics [periodiccnt];	1285	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1082	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1286	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1083	}	1287	}
1084		1288
		1289	ev_stop (EV_A_ (W)w);
		1290	}
		1291
		1292	void
		1293	ev_idle_start (EV_P_ struct ev_idle *w)
		1294	{
		1295	if (ev_is_active (w))
		1296	return;
		1297
		1298	ev_start (EV_A_ (W)w, ++idlecnt);
		1299	array_needsize (idles, idlemax, idlecnt, );
		1300	idles [idlecnt - 1] = w;
		1301	}
		1302
		1303	void
		1304	ev_idle_stop (EV_P_ struct ev_idle *w)
		1305	{
		1306	ev_clear_pending (EV_A_ (W)w);
		1307	if (ev_is_active (w))
		1308	return;
		1309
		1310	idles [((W)w)->active - 1] = idles [--idlecnt];
		1311	ev_stop (EV_A_ (W)w);
		1312	}
		1313
		1314	void
		1315	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1316	{
		1317	if (ev_is_active (w))
		1318	return;
		1319
		1320	ev_start (EV_A_ (W)w, ++preparecnt);
		1321	array_needsize (prepares, preparemax, preparecnt, );
		1322	prepares [preparecnt - 1] = w;
		1323	}
		1324
		1325	void
		1326	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1327	{
		1328	ev_clear_pending (EV_A_ (W)w);
		1329	if (ev_is_active (w))
		1330	return;
		1331
		1332	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1333	ev_stop (EV_A_ (W)w);
		1334	}
		1335
		1336	void
		1337	ev_check_start (EV_P_ struct ev_check *w)
		1338	{
		1339	if (ev_is_active (w))
		1340	return;
		1341
		1342	ev_start (EV_A_ (W)w, ++checkcnt);
		1343	array_needsize (checks, checkmax, checkcnt, );
		1344	checks [checkcnt - 1] = w;
		1345	}
		1346
		1347	void
		1348	ev_check_stop (EV_P_ struct ev_check *w)
		1349	{
		1350	ev_clear_pending (EV_A_ (W)w);
		1351	if (ev_is_active (w))
		1352	return;
		1353
		1354	checks [((W)w)->active - 1] = checks [--checkcnt];
1085	ev_stop (EV_A_ (W)w);	1355	ev_stop (EV_A_ (W)w);
1086	}	1356	}
1087		1357
1088	#ifndef SA_RESTART	1358	#ifndef SA_RESTART
1089	# define SA_RESTART 0	1359	# define SA_RESTART 0
1090	#endif	1360	#endif
1091		1361
1092	void	1362	void
1093	ev_signal_start (EV_P_ struct ev_signal *w)	1363	ev_signal_start (EV_P_ struct ev_signal *w)
1094	{	1364	{
		1365	#if EV_MULTIPLICITY
		1366	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1367	#endif
1095	if (ev_is_active (w))	1368	if (ev_is_active (w))
1096	return;	1369	return;
1097		1370
1098	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1371	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099		1372
1100	ev_start (EV_A_ (W)w, 1);	1373	ev_start (EV_A_ (W)w, 1);
1101	array_needsize (signals, signalmax, w->signum, signals_init);	1374	array_needsize (signals, signalmax, w->signum, signals_init);
1102	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1375	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1103		1376
1104	if (!w->next)	1377	if (!((WL)w)->next)
1105	{	1378	{
		1379	#if WIN32
		1380	signal (w->signum, sighandler);
		1381	#else
1106	struct sigaction sa;	1382	struct sigaction sa;
1107	sa.sa_handler = sighandler;	1383	sa.sa_handler = sighandler;
1108	sigfillset (&sa.sa_mask);	1384	sigfillset (&sa.sa_mask);
1109	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1385	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110	sigaction (w->signum, &sa, 0);	1386	sigaction (w->signum, &sa, 0);
		1387	#endif
1111	}	1388	}
1112	}	1389	}
1113		1390
1114	void	1391	void
1115	ev_signal_stop (EV_P_ struct ev_signal *w)	1392	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1124	if (!signals [w->signum - 1].head)	1401	if (!signals [w->signum - 1].head)
1125	signal (w->signum, SIG_DFL);	1402	signal (w->signum, SIG_DFL);
1126	}	1403	}
1127		1404
1128	void	1405	void
1129	ev_idle_start (EV_P_ struct ev_idle *w)
1130	{
1131	if (ev_is_active (w))
1132	return;
1133
1134	ev_start (EV_A_ (W)w, ++idlecnt);
1135	array_needsize (idles, idlemax, idlecnt, );
1136	idles [idlecnt - 1] = w;
1137	}
1138
1139	void
1140	ev_idle_stop (EV_P_ struct ev_idle *w)
1141	{
1142	ev_clear_pending (EV_A_ (W)w);
1143	if (ev_is_active (w))
1144	return;
1145
1146	idles [w->active - 1] = idles [--idlecnt];
1147	ev_stop (EV_A_ (W)w);
1148	}
1149
1150	void
1151	ev_prepare_start (EV_P_ struct ev_prepare *w)
1152	{
1153	if (ev_is_active (w))
1154	return;
1155
1156	ev_start (EV_A_ (W)w, ++preparecnt);
1157	array_needsize (prepares, preparemax, preparecnt, );
1158	prepares [preparecnt - 1] = w;
1159	}
1160
1161	void
1162	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1163	{
1164	ev_clear_pending (EV_A_ (W)w);
1165	if (ev_is_active (w))
1166	return;
1167
1168	prepares [w->active - 1] = prepares [--preparecnt];
1169	ev_stop (EV_A_ (W)w);
1170	}
1171
1172	void
1173	ev_check_start (EV_P_ struct ev_check *w)
1174	{
1175	if (ev_is_active (w))
1176	return;
1177
1178	ev_start (EV_A_ (W)w, ++checkcnt);
1179	array_needsize (checks, checkmax, checkcnt, );
1180	checks [checkcnt - 1] = w;
1181	}
1182
1183	void
1184	ev_check_stop (EV_P_ struct ev_check *w)
1185	{
1186	ev_clear_pending (EV_A_ (W)w);
1187	if (ev_is_active (w))
1188	return;
1189
1190	checks [w->active - 1] = checks [--checkcnt];
1191	ev_stop (EV_A_ (W)w);
1192	}
1193
1194	void
1195	ev_child_start (EV_P_ struct ev_child *w)	1406	ev_child_start (EV_P_ struct ev_child *w)
1196	{	1407	{
		1408	#if EV_MULTIPLICITY
		1409	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1410	#endif
1197	if (ev_is_active (w))	1411	if (ev_is_active (w))
1198	return;	1412	return;
1199		1413
1200	ev_start (EV_A_ (W)w, 1);	1414	ev_start (EV_A_ (W)w, 1);
1201	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1415	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1228	void (cb)(int revents, void arg) = once->cb;	1442	void (cb)(int revents, void arg) = once->cb;
1229	void *arg = once->arg;	1443	void *arg = once->arg;
1230		1444
1231	ev_io_stop (EV_A_ &once->io);	1445	ev_io_stop (EV_A_ &once->io);
1232	ev_timer_stop (EV_A_ &once->to);	1446	ev_timer_stop (EV_A_ &once->to);
1233	free (once);	1447	ev_free (once);
1234		1448
1235	cb (revents, arg);	1449	cb (revents, arg);
1236	}	1450	}
1237		1451
1238	static void	1452	static void
…		…
1248	}	1462	}
1249		1463
1250	void	1464	void
1251	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1465	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1252	{	1466	{
1253	struct ev_once *once = malloc (sizeof (struct ev_once));	1467	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1254		1468
1255	if (!once)	1469	if (!once)
1256	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1470	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1257	else	1471	else
1258	{	1472	{
…		…
1273	ev_timer_start (EV_A_ &once->to);	1487	ev_timer_start (EV_A_ &once->to);
1274	}	1488	}
1275	}	1489	}
1276	}	1490	}
1277		1491
1278	/*****************************************************************************/
1279
1280	#if 0
1281
1282	struct ev_io wio;
1283
1284	static void
1285	sin_cb (struct ev_io *w, int revents)
1286	{
1287	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1288	}
1289
1290	static void
1291	ocb (struct ev_timer *w, int revents)
1292	{
1293	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1294	ev_timer_stop (w);
1295	ev_timer_start (w);
1296	}
1297
1298	static void
1299	scb (struct ev_signal *w, int revents)
1300	{
1301	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1302	ev_io_stop (&wio);
1303	ev_io_start (&wio);
1304	}
1305
1306	static void
1307	gcb (struct ev_signal *w, int revents)
1308	{
1309	fprintf (stderr, "generic %x\n", revents);
1310
1311	}
1312
1313	int main (void)
1314	{
1315	ev_init (0);
1316
1317	ev_io_init (&wio, sin_cb, 0, EV_READ);
1318	ev_io_start (&wio);
1319
1320	struct ev_timer t[10000];
1321
1322	#if 0
1323	int i;
1324	for (i = 0; i < 10000; ++i)
1325	{
1326	struct ev_timer *w = t + i;
1327	ev_watcher_init (w, ocb, i);
1328	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1329	ev_timer_start (w);
1330	if (drand48 () < 0.5)
1331	ev_timer_stop (w);
1332	}
1333	#endif
1334
1335	struct ev_timer t1;
1336	ev_timer_init (&t1, ocb, 5, 10);
1337	ev_timer_start (&t1);
1338
1339	struct ev_signal sig;
1340	ev_signal_init (&sig, scb, SIGQUIT);
1341	ev_signal_start (&sig);
1342
1343	struct ev_check cw;
1344	ev_check_init (&cw, gcb);
1345	ev_check_start (&cw);
1346
1347	struct ev_idle iw;
1348	ev_idle_init (&iw, gcb);
1349	ev_idle_start (&iw);
1350
1351	ev_loop (0);
1352
1353	return 0;
1354	}
1355
1356	#endif
1357
1358
1359
1360

Diff Legend

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

Comparing libev/ev.c (file contents): Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs. Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.55 by root, Sun Nov 4 00:39:24 2007 UTC vs.
Revision 1.69 by root, Tue Nov 6 00:10:04 2007 UTC