[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 1.70 by root, Tue Nov 6 00:52:32 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)(const char msg);
		159
		160	void ev_set_syserr_cb (void (cb)(const char msg))
		161	{
		162	syserr_cb = cb;
		163	}
		164
		165	static void
		166	syserr (const char *msg)
		167	{
		168	if (!msg)
		169	msg = "(libev) system error";
		170
		171	if (syserr_cb)
		172	syserr_cb (msg);
		173	else
		174	{
		175	perror (msg);
		176	abort ();
		177	}
		178	}
		179
		180	static void (alloc)(void *ptr, long size);
		181
		182	void ev_set_allocator (void (cb)(void *ptr, long size))
		183	{
		184	alloc = cb;
		185	}
		186
		187	static void *
		188	ev_realloc (void *ptr, long size)
		189	{
		190	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		191
		192	if (!ptr && size)
		193	{
		194	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		195	abort ();
		196	}
		197
		198	return ptr;
		199	}
		200
		201	#define ev_malloc(size) ev_realloc (0, (size))
		202	#define ev_free(ptr) ev_realloc ((ptr), 0)
		203
		204	/*****************************************************************************/
		205
122	typedef struct	206	typedef struct
123	{	207	{
124	struct ev_watcher_list *head;	208	WL head;
125	unsigned char events;	209	unsigned char events;
126	unsigned char reify;	210	unsigned char reify;
127	} ANFD;	211	} ANFD;
128		212
129	typedef struct	213	typedef struct
…		…
187	return rt_now;	271	return rt_now;
188	}	272	}
189		273
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	274	#define array_roundsize(base,n) ((n) \| 4 & ~3)
191		275
192	#define array_needsize(base,cur,cnt,init) \	276	#define array_needsize(base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	277	if (expect_false ((cnt) > cur)) \
194	{ \	278	{ \
195	int newcnt = cur; \	279	int newcnt = cur; \
196	do \	280	do \
197	{ \	281	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	282	newcnt = array_roundsize (base, newcnt << 1); \
199	} \	283	} \
200	while ((cnt) > newcnt); \	284	while ((cnt) > newcnt); \
201	\	285	\
202	base = realloc (base, sizeof (base) (newcnt)); \	286	base = ev_realloc (base, sizeof (base) (newcnt)); \
203	init (base + cur, newcnt - cur); \	287	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	288	cur = newcnt; \
205	}	289	}
		290
		291	#define array_slim(stem) \
		292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		293	{ \
		294	stem ## max = array_roundsize (stem ## cnt >> 1); \
		295	base = ev_realloc (base, sizeof (base) (stem ## max)); \
		296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		297	}
		298
		299	#define array_free(stem, idx) \
		300	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		301
207	/*****************************************************************************/	302	/*****************************************************************************/
208		303
209	static void	304	static void
210	anfds_init (ANFD *base, int count)	305	anfds_init (ANFD *base, int count)
…		…
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	372	events \|= w->events;
278		373
279	anfd->reify = 0;	374	anfd->reify = 0;
280		375
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	376	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	377	anfd->events = events;
285	}
286	}	378	}
287		379
288	fdchangecnt = 0;	380	fdchangecnt = 0;
289	}	381	}
290		382
291	static void	383	static void
292	fd_change (EV_P_ int fd)	384	fd_change (EV_P_ int fd)
293	{	385	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	386	if (anfds [fd].reify)
295	return;	387	return;
296		388
297	anfds [fd].reify = 1;	389	anfds [fd].reify = 1;
298		390
299	++fdchangecnt;	391	++fdchangecnt;
…		…
327		419
328	/* called on ENOMEM in select/poll to kill some fds and retry */	420	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	421	static void
330	fd_enomem (EV_P)	422	fd_enomem (EV_P)
331	{	423	{
332	int fd = anfdmax;	424	int fd;
333		425
334	while (fd--)	426	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	427	if (anfds [fd].events)
336	{	428	{
337	close (fd);
338	fd_kill (EV_A_ fd);	429	fd_kill (EV_A_ fd);
339	return;	430	return;
340	}	431	}
341	}	432	}
342		433
		434	/* usually called after fork if method needs to re-arm all fds from scratch */
		435	static void
		436	fd_rearm_all (EV_P)
		437	{
		438	int fd;
		439
		440	/* this should be highly optimised to not do anything but set a flag */
		441	for (fd = 0; fd < anfdmax; ++fd)
		442	if (anfds [fd].events)
		443	{
		444	anfds [fd].events = 0;
		445	fd_change (EV_A_ fd);
		446	}
		447	}
		448
343	/*****************************************************************************/	449	/*****************************************************************************/
344		450
345	static void	451	static void
346	upheap (WT *heap, int k)	452	upheap (WT *heap, int k)
347	{	453	{
348	WT w = heap [k];	454	WT w = heap [k];
349		455
350	while (k && heap [k >> 1]->at > w->at)	456	while (k && heap [k >> 1]->at > w->at)
351	{	457	{
352	heap [k] = heap [k >> 1];	458	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	459	((W)heap [k])->active = k + 1;
354	k >>= 1;	460	k >>= 1;
355	}	461	}
356		462
357	heap [k] = w;	463	heap [k] = w;
358	heap [k]->active = k + 1;	464	((W)heap [k])->active = k + 1;
359		465
360	}	466	}
361		467
362	static void	468	static void
363	downheap (WT *heap, int N, int k)	469	downheap (WT *heap, int N, int k)
…		…
373		479
374	if (w->at <= heap [j]->at)	480	if (w->at <= heap [j]->at)
375	break;	481	break;
376		482
377	heap [k] = heap [j];	483	heap [k] = heap [j];
378	heap [k]->active = k + 1;	484	((W)heap [k])->active = k + 1;
379	k = j;	485	k = j;
380	}	486	}
381		487
382	heap [k] = w;	488	heap [k] = w;
383	heap [k]->active = k + 1;	489	((W)heap [k])->active = k + 1;
384	}	490	}
385		491
386	/*****************************************************************************/	492	/*****************************************************************************/
387		493
388	typedef struct	494	typedef struct
389	{	495	{
390	struct ev_watcher_list *head;	496	WL head;
391	sig_atomic_t volatile gotsig;	497	sig_atomic_t volatile gotsig;
392	} ANSIG;	498	} ANSIG;
393		499
394	static ANSIG *signals;	500	static ANSIG *signals;
395	static int signalmax;	501	static int signalmax;
396		502
397	static int sigpipe [2];	503	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	504	static sig_atomic_t volatile gotsig;
		505	static struct ev_io sigev;
399		506
400	static void	507	static void
401	signals_init (ANSIG *base, int count)	508	signals_init (ANSIG *base, int count)
402	{	509	{
403	while (count--)	510	while (count--)
…		…
410	}	517	}
411		518
412	static void	519	static void
413	sighandler (int signum)	520	sighandler (int signum)
414	{	521	{
		522	#if WIN32
		523	signal (signum, sighandler);
		524	#endif
		525
415	signals [signum - 1].gotsig = 1;	526	signals [signum - 1].gotsig = 1;
416		527
417	if (!gotsig)	528	if (!gotsig)
418	{	529	{
419	int old_errno = errno;	530	int old_errno = errno;
…		…
424	}	535	}
425		536
426	static void	537	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	538	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	539	{
429	struct ev_watcher_list *w;	540	WL w;
430	int signum;	541	int signum;
431		542
432	read (sigpipe [0], &revents, 1);	543	read (sigpipe [0], &revents, 1);
433	gotsig = 0;	544	gotsig = 0;
434		545
…		…
461		572
462	/*****************************************************************************/	573	/*****************************************************************************/
463		574
464	#ifndef WIN32	575	#ifndef WIN32
465		576
		577	static struct ev_child *childs [PID_HASHSIZE];
		578	static struct ev_signal childev;
		579
466	#ifndef WCONTINUED	580	#ifndef WCONTINUED
467	# define WCONTINUED 0	581	# define WCONTINUED 0
468	#endif	582	#endif
469		583
470	static void	584	static void
…		…
473	struct ev_child *w;	587	struct ev_child *w;
474		588
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	589	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)	590	if (w->pid == pid \|\| !w->pid)
477	{	591	{
478	w->priority = sw->priority; /* need to do it now */	592	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	593	w->rpid = pid;
480	w->rstatus = status;	594	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	595	event (EV_A_ (W)w, EV_CHILD);
482	}	596	}
483	}	597	}
484		598
485	static void	599	static void
…		…
505	# include "ev_kqueue.c"	619	# include "ev_kqueue.c"
506	#endif	620	#endif
507	#if EV_USE_EPOLL	621	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	622	# include "ev_epoll.c"
509	#endif	623	#endif
510	#if EV_USEV_POLL	624	#if EV_USE_POLL
511	# include "ev_poll.c"	625	# include "ev_poll.c"
512	#endif	626	#endif
513	#if EV_USE_SELECT	627	#if EV_USE_SELECT
514	# include "ev_select.c"	628	# include "ev_select.c"
515	#endif	629	#endif
…		…
542	ev_method (EV_P)	656	ev_method (EV_P)
543	{	657	{
544	return method;	658	return method;
545	}	659	}
546		660
547	inline int	661	static void
548	loop_init (EV_P_ int methods)	662	loop_init (EV_P_ int methods)
549	{	663	{
550	if (!method)	664	if (!method)
551	{	665	{
552	#if EV_USE_MONOTONIC	666	#if EV_USE_MONOTONIC
…		…
560	rt_now = ev_time ();	674	rt_now = ev_time ();
561	mn_now = get_clock ();	675	mn_now = get_clock ();
562	now_floor = mn_now;	676	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	677	rtmn_diff = rt_now - mn_now;
564		678
565	if (pipe (sigpipe))
566	return 0;
567
568	if (methods == EVMETHOD_AUTO)	679	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	680	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	681	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	682	else
572	methods = EVMETHOD_ANY;	683	methods = EVMETHOD_ANY;
573		684
574	method = 0;	685	method = 0;
		686	#if EV_USE_WIN32
		687	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		688	#endif
575	#if EV_USE_KQUEUE	689	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	691	#endif
578	#if EV_USE_EPOLL	692	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	694	#endif
581	#if EV_USEV_POLL	695	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	697	#endif
584	#if EV_USE_SELECT	698	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	700	#endif
587		701
		702	ev_watcher_init (&sigev, sigcb);
		703	ev_set_priority (&sigev, EV_MAXPRI);
		704	}
		705	}
		706
		707	void
		708	loop_destroy (EV_P)
		709	{
		710	int i;
		711
		712	#if EV_USE_WIN32
		713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		714	#endif
		715	#if EV_USE_KQUEUE
		716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		717	#endif
		718	#if EV_USE_EPOLL
		719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		720	#endif
		721	#if EV_USE_POLL
		722	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		723	#endif
		724	#if EV_USE_SELECT
		725	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		726	#endif
		727
		728	for (i = NUMPRI; i--; )
		729	array_free (pending, [i]);
		730
		731	array_free (fdchange, );
		732	array_free (timer, );
		733	array_free (periodic, );
		734	array_free (idle, );
		735	array_free (prepare, );
		736	array_free (check, );
		737
		738	method = 0;
		739	}
		740
		741	static void
		742	loop_fork (EV_P)
		743	{
		744	#if EV_USE_EPOLL
		745	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		746	#endif
		747	#if EV_USE_KQUEUE
		748	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		749	#endif
		750
		751	if (ev_is_active (&sigev))
		752	{
		753	/* default loop */
		754
		755	ev_ref (EV_A);
		756	ev_io_stop (EV_A_ &sigev);
		757	close (sigpipe [0]);
		758	close (sigpipe [1]);
		759
		760	while (pipe (sigpipe))
		761	syserr ("(libev) error creating pipe");
		762
		763	siginit (EV_A);
		764	}
		765
		766	postfork = 0;
		767	}
		768
		769	#if EV_MULTIPLICITY
		770	struct ev_loop *
		771	ev_loop_new (int methods)
		772	{
		773	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		774
		775	memset (loop, 0, sizeof (struct ev_loop));
		776
		777	loop_init (EV_A_ methods);
		778
		779	if (ev_method (EV_A))
		780	return loop;
		781
		782	return 0;
		783	}
		784
		785	void
		786	ev_loop_destroy (EV_P)
		787	{
		788	loop_destroy (EV_A);
		789	ev_free (loop);
		790	}
		791
		792	void
		793	ev_loop_fork (EV_P)
		794	{
		795	postfork = 1;
		796	}
		797
		798	#endif
		799
		800	#if EV_MULTIPLICITY
		801	struct ev_loop default_loop_struct;
		802	static struct ev_loop *default_loop;
		803
		804	struct ev_loop *
		805	#else
		806	static int default_loop;
		807
		808	int
		809	#endif
		810	ev_default_loop (int methods)
		811	{
		812	if (sigpipe [0] == sigpipe [1])
		813	if (pipe (sigpipe))
		814	return 0;
		815
		816	if (!default_loop)
		817	{
		818	#if EV_MULTIPLICITY
		819	struct ev_loop *loop = default_loop = &default_loop_struct;
		820	#else
		821	default_loop = 1;
		822	#endif
		823
		824	loop_init (EV_A_ methods);
		825
588	if (method)	826	if (ev_method (EV_A))
589	{	827	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	828	siginit (EV_A);
593		829
594	#ifndef WIN32	830	#ifndef WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	831	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	832	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	833	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	834	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	835	#endif
600	}	836	}
		837	else
		838	default_loop = 0;
601	}	839	}
602		840
603	return method;	841	return default_loop;
604	}	842	}
605		843
		844	void
		845	ev_default_destroy (void)
		846	{
606	#if EV_MULTIPLICITY	847	#if EV_MULTIPLICITY
607		848	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	849	#endif
637		850
638	/*****************************************************************************/	851	ev_ref (EV_A); /* child watcher */
		852	ev_signal_stop (EV_A_ &childev);
639		853
640	void	854	ev_ref (EV_A); /* signal watcher */
641	ev_fork_prepare (void)
642	{
643	/* nop */
644	}
645
646	void
647	ev_fork_parent (void)
648	{
649	/* nop */
650	}
651
652	void
653	ev_fork_child (void)
654	{
655	/TODO/
656	#if !EV_MULTIPLICITY
657	#if EV_USE_EPOLL
658	if (method == EVMETHOD_EPOLL)
659	epoll_postfork_child (EV_A);
660	#endif
661
662	ev_io_stop (EV_A_ &sigev);	855	ev_io_stop (EV_A_ &sigev);
663	close (sigpipe [0]);	856
664	close (sigpipe [1]);	857	close (sigpipe [0]); sigpipe [0] = 0;
665	pipe (sigpipe);	858	close (sigpipe [1]); sigpipe [1] = 0;
666	siginit (EV_A);	859
		860	loop_destroy (EV_A);
		861	}
		862
		863	void
		864	ev_default_fork (void)
		865	{
		866	#if EV_MULTIPLICITY
		867	struct ev_loop *loop = default_loop;
667	#endif	868	#endif
		869
		870	if (method)
		871	postfork = 1;
668	}	872	}
669		873
670	/*****************************************************************************/	874	/*****************************************************************************/
671		875
672	static void	876	static void
…		…
688	}	892	}
689		893
690	static void	894	static void
691	timers_reify (EV_P)	895	timers_reify (EV_P)
692	{	896	{
693	while (timercnt && timers [0]->at <= mn_now)	897	while (timercnt && ((WT)timers [0])->at <= mn_now)
694	{	898	{
695	struct ev_timer *w = timers [0];	899	struct ev_timer *w = timers [0];
		900
		901	assert (("inactive timer on timer heap detected", ev_is_active (w)));
696		902
697	/* first reschedule or stop timer */	903	/* first reschedule or stop timer */
698	if (w->repeat)	904	if (w->repeat)
699	{	905	{
700	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	906	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
701	w->at = mn_now + w->repeat;	907	((WT)w)->at = mn_now + w->repeat;
702	downheap ((WT *)timers, timercnt, 0);	908	downheap ((WT *)timers, timercnt, 0);
703	}	909	}
704	else	910	else
705	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
706		912
…		…
709	}	915	}
710		916
711	static void	917	static void
712	periodics_reify (EV_P)	918	periodics_reify (EV_P)
713	{	919	{
714	while (periodiccnt && periodics [0]->at <= rt_now)	920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
715	{	921	{
716	struct ev_periodic *w = periodics [0];	922	struct ev_periodic *w = periodics [0];
		923
		924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
717		925
718	/* first reschedule or stop timer */	926	/* first reschedule or stop timer */
719	if (w->interval)	927	if (w->interval)
720	{	928	{
721	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	929	((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));	930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
723	downheap ((WT *)periodics, periodiccnt, 0);	931	downheap ((WT *)periodics, periodiccnt, 0);
724	}	932	}
725	else	933	else
726	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
727		935
…		…
739	{	947	{
740	struct ev_periodic *w = periodics [i];	948	struct ev_periodic *w = periodics [i];
741		949
742	if (w->interval)	950	if (w->interval)
743	{	951	{
744	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
745		953
746	if (fabs (diff) >= 1e-4)	954	if (fabs (diff) >= 1e-4)
747	{	955	{
748	ev_periodic_stop (EV_A_ w);	956	ev_periodic_stop (EV_A_ w);
749	ev_periodic_start (EV_A_ w);	957	ev_periodic_start (EV_A_ w);
…		…
810	{	1018	{
811	periodics_reschedule (EV_A);	1019	periodics_reschedule (EV_A);
812		1020
813	/* adjust timers. this is easy, as the offset is the same for all */	1021	/* adjust timers. this is easy, as the offset is the same for all */
814	for (i = 0; i < timercnt; ++i)	1022	for (i = 0; i < timercnt; ++i)
815	timers [i]->at += rt_now - mn_now;	1023	((WT)timers [i])->at += rt_now - mn_now;
816	}	1024	}
817		1025
818	mn_now = rt_now;	1026	mn_now = rt_now;
819	}	1027	}
820	}	1028	}
…		…
846	{	1054	{
847	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
848	call_pending (EV_A);	1056	call_pending (EV_A);
849	}	1057	}
850		1058
		1059	/* we might have forked, so reify kernel state if necessary */
		1060	if (expect_false (postfork))
		1061	loop_fork (EV_A);
		1062
851	/* update fd-related kernel structures */	1063	/* update fd-related kernel structures */
852	fd_reify (EV_A);	1064	fd_reify (EV_A);
853		1065
854	/* calculate blocking time */	1066	/* calculate blocking time */
855		1067
…		…
871	{	1083	{
872	block = MAX_BLOCKTIME;	1084	block = MAX_BLOCKTIME;
873		1085
874	if (timercnt)	1086	if (timercnt)
875	{	1087	{
876	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
877	if (block > to) block = to;	1089	if (block > to) block = to;
878	}	1090	}
879		1091
880	if (periodiccnt)	1092	if (periodiccnt)
881	{	1093	{
882	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
883	if (block > to) block = to;	1095	if (block > to) block = to;
884	}	1096	}
885		1097
886	if (block < 0.) block = 0.;	1098	if (block < 0.) block = 0.;
887	}	1099	}
…		…
1004	ev_timer_start (EV_P_ struct ev_timer *w)	1216	ev_timer_start (EV_P_ struct ev_timer *w)
1005	{	1217	{
1006	if (ev_is_active (w))	1218	if (ev_is_active (w))
1007	return;	1219	return;
1008		1220
1009	w->at += mn_now;	1221	((WT)w)->at += mn_now;
1010		1222
1011	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1223	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1012		1224
1013	ev_start (EV_A_ (W)w, ++timercnt);	1225	ev_start (EV_A_ (W)w, ++timercnt);
1014	array_needsize (timers, timermax, timercnt, );	1226	array_needsize (timers, timermax, timercnt, );
1015	timers [timercnt - 1] = w;	1227	timers [timercnt - 1] = w;
1016	upheap ((WT *)timers, timercnt - 1);	1228	upheap ((WT *)timers, timercnt - 1);
		1229
		1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1017	}	1231	}
1018		1232
1019	void	1233	void
1020	ev_timer_stop (EV_P_ struct ev_timer *w)	1234	ev_timer_stop (EV_P_ struct ev_timer *w)
1021	{	1235	{
1022	ev_clear_pending (EV_A_ (W)w);	1236	ev_clear_pending (EV_A_ (W)w);
1023	if (!ev_is_active (w))	1237	if (!ev_is_active (w))
1024	return;	1238	return;
1025		1239
		1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1241
1026	if (w->active < timercnt--)	1242	if (((W)w)->active < timercnt--)
1027	{	1243	{
1028	timers [w->active - 1] = timers [timercnt];	1244	timers [((W)w)->active - 1] = timers [timercnt];
1029	downheap ((WT *)timers, timercnt, w->active - 1);	1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1030	}	1246	}
1031		1247
1032	w->at = w->repeat;	1248	((WT)w)->at = w->repeat;
1033		1249
1034	ev_stop (EV_A_ (W)w);	1250	ev_stop (EV_A_ (W)w);
1035	}	1251	}
1036		1252
1037	void	1253	void
…		…
1039	{	1255	{
1040	if (ev_is_active (w))	1256	if (ev_is_active (w))
1041	{	1257	{
1042	if (w->repeat)	1258	if (w->repeat)
1043	{	1259	{
1044	w->at = mn_now + w->repeat;	1260	((WT)w)->at = mn_now + w->repeat;
1045	downheap ((WT *)timers, timercnt, w->active - 1);	1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1046	}	1262	}
1047	else	1263	else
1048	ev_timer_stop (EV_A_ w);	1264	ev_timer_stop (EV_A_ w);
1049	}	1265	}
1050	else if (w->repeat)	1266	else if (w->repeat)
…		…
1059		1275
1060	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1061		1277
1062	/* this formula differs from the one in periodic_reify because we do not always round up */	1278	/* this formula differs from the one in periodic_reify because we do not always round up */
1063	if (w->interval)	1279	if (w->interval)
1064	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1065		1281
1066	ev_start (EV_A_ (W)w, ++periodiccnt);	1282	ev_start (EV_A_ (W)w, ++periodiccnt);
1067	array_needsize (periodics, periodicmax, periodiccnt, );	1283	array_needsize (periodics, periodicmax, periodiccnt, );
1068	periodics [periodiccnt - 1] = w;	1284	periodics [periodiccnt - 1] = w;
1069	upheap ((WT *)periodics, periodiccnt - 1);	1285	upheap ((WT *)periodics, periodiccnt - 1);
		1286
		1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1070	}	1288	}
1071		1289
1072	void	1290	void
1073	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1291	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1074	{	1292	{
1075	ev_clear_pending (EV_A_ (W)w);	1293	ev_clear_pending (EV_A_ (W)w);
1076	if (!ev_is_active (w))	1294	if (!ev_is_active (w))
1077	return;	1295	return;
1078		1296
		1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1298
1079	if (w->active < periodiccnt--)	1299	if (((W)w)->active < periodiccnt--)
1080	{	1300	{
1081	periodics [w->active - 1] = periodics [periodiccnt];	1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1082	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1083	}	1303	}
1084		1304
		1305	ev_stop (EV_A_ (W)w);
		1306	}
		1307
		1308	void
		1309	ev_idle_start (EV_P_ struct ev_idle *w)
		1310	{
		1311	if (ev_is_active (w))
		1312	return;
		1313
		1314	ev_start (EV_A_ (W)w, ++idlecnt);
		1315	array_needsize (idles, idlemax, idlecnt, );
		1316	idles [idlecnt - 1] = w;
		1317	}
		1318
		1319	void
		1320	ev_idle_stop (EV_P_ struct ev_idle *w)
		1321	{
		1322	ev_clear_pending (EV_A_ (W)w);
		1323	if (ev_is_active (w))
		1324	return;
		1325
		1326	idles [((W)w)->active - 1] = idles [--idlecnt];
		1327	ev_stop (EV_A_ (W)w);
		1328	}
		1329
		1330	void
		1331	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1332	{
		1333	if (ev_is_active (w))
		1334	return;
		1335
		1336	ev_start (EV_A_ (W)w, ++preparecnt);
		1337	array_needsize (prepares, preparemax, preparecnt, );
		1338	prepares [preparecnt - 1] = w;
		1339	}
		1340
		1341	void
		1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1343	{
		1344	ev_clear_pending (EV_A_ (W)w);
		1345	if (ev_is_active (w))
		1346	return;
		1347
		1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1349	ev_stop (EV_A_ (W)w);
		1350	}
		1351
		1352	void
		1353	ev_check_start (EV_P_ struct ev_check *w)
		1354	{
		1355	if (ev_is_active (w))
		1356	return;
		1357
		1358	ev_start (EV_A_ (W)w, ++checkcnt);
		1359	array_needsize (checks, checkmax, checkcnt, );
		1360	checks [checkcnt - 1] = w;
		1361	}
		1362
		1363	void
		1364	ev_check_stop (EV_P_ struct ev_check *w)
		1365	{
		1366	ev_clear_pending (EV_A_ (W)w);
		1367	if (ev_is_active (w))
		1368	return;
		1369
		1370	checks [((W)w)->active - 1] = checks [--checkcnt];
1085	ev_stop (EV_A_ (W)w);	1371	ev_stop (EV_A_ (W)w);
1086	}	1372	}
1087		1373
1088	#ifndef SA_RESTART	1374	#ifndef SA_RESTART
1089	# define SA_RESTART 0	1375	# define SA_RESTART 0
1090	#endif	1376	#endif
1091		1377
1092	void	1378	void
1093	ev_signal_start (EV_P_ struct ev_signal *w)	1379	ev_signal_start (EV_P_ struct ev_signal *w)
1094	{	1380	{
		1381	#if EV_MULTIPLICITY
		1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1383	#endif
1095	if (ev_is_active (w))	1384	if (ev_is_active (w))
1096	return;	1385	return;
1097		1386
1098	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1387	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1099		1388
1100	ev_start (EV_A_ (W)w, 1);	1389	ev_start (EV_A_ (W)w, 1);
1101	array_needsize (signals, signalmax, w->signum, signals_init);	1390	array_needsize (signals, signalmax, w->signum, signals_init);
1102	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1103		1392
1104	if (!w->next)	1393	if (!((WL)w)->next)
1105	{	1394	{
		1395	#if WIN32
		1396	signal (w->signum, sighandler);
		1397	#else
1106	struct sigaction sa;	1398	struct sigaction sa;
1107	sa.sa_handler = sighandler;	1399	sa.sa_handler = sighandler;
1108	sigfillset (&sa.sa_mask);	1400	sigfillset (&sa.sa_mask);
1109	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1401	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1110	sigaction (w->signum, &sa, 0);	1402	sigaction (w->signum, &sa, 0);
		1403	#endif
1111	}	1404	}
1112	}	1405	}
1113		1406
1114	void	1407	void
1115	ev_signal_stop (EV_P_ struct ev_signal *w)	1408	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1124	if (!signals [w->signum - 1].head)	1417	if (!signals [w->signum - 1].head)
1125	signal (w->signum, SIG_DFL);	1418	signal (w->signum, SIG_DFL);
1126	}	1419	}
1127		1420
1128	void	1421	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)	1422	ev_child_start (EV_P_ struct ev_child *w)
1196	{	1423	{
		1424	#if EV_MULTIPLICITY
		1425	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1426	#endif
1197	if (ev_is_active (w))	1427	if (ev_is_active (w))
1198	return;	1428	return;
1199		1429
1200	ev_start (EV_A_ (W)w, 1);	1430	ev_start (EV_A_ (W)w, 1);
1201	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1431	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1228	void (cb)(int revents, void arg) = once->cb;	1458	void (cb)(int revents, void arg) = once->cb;
1229	void *arg = once->arg;	1459	void *arg = once->arg;
1230		1460
1231	ev_io_stop (EV_A_ &once->io);	1461	ev_io_stop (EV_A_ &once->io);
1232	ev_timer_stop (EV_A_ &once->to);	1462	ev_timer_stop (EV_A_ &once->to);
1233	free (once);	1463	ev_free (once);
1234		1464
1235	cb (revents, arg);	1465	cb (revents, arg);
1236	}	1466	}
1237		1467
1238	static void	1468	static void
…		…
1248	}	1478	}
1249		1479
1250	void	1480	void
1251	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1252	{	1482	{
1253	struct ev_once *once = malloc (sizeof (struct ev_once));	1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1254		1484
1255	if (!once)	1485	if (!once)
1256	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1486	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1257	else	1487	else
1258	{	1488	{
…		…
1273	ev_timer_start (EV_A_ &once->to);	1503	ev_timer_start (EV_A_ &once->to);
1274	}	1504	}
1275	}	1505	}
1276	}	1506	}
1277		1507
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 1.70 by root, Tue Nov 6 00:52:32 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 1.70 by root, Tue Nov 6 00:52:32 2007 UTC