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

Comparing libev/ev.c (file contents):
Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC

…		…
216	# include <sys/inotify.h>	216	# include <sys/inotify.h>
217	#endif	217	#endif
218		218
219	/**/	219	/**/
220		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		230
221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
223	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */	233	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
224		234
225	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
226	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
227	# define inline_size static inline /* inline for codesize */
228	# if EV_MINIMAL
229	# define noinline __attribute__ ((noinline))	237	# define noinline __attribute__ ((noinline))
230	# define inline_speed static noinline
231	# else
232	# define noinline
233	# define inline_speed static inline
234	# endif
235	#else	238	#else
236	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
237	# define inline_speed static
238	# define inline_size static
239	# define noinline	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
240	#endif	244	#endif
241		245
242	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
243	#define expect_true(expr) expect ((expr) != 0, 1)	247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
244		255
245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
246	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
247		258
248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
249	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
250		261
251	typedef ev_watcher *W;	262	typedef ev_watcher *W;
252	typedef ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
253	typedef ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
…		…
281	perror (msg);	292	perror (msg);
282	abort ();	293	abort ();
283	}	294	}
284	}	295	}
285		296
286	static void (alloc)(void *ptr, size_t size) = realloc;	297	static void (alloc)(void *ptr, long size);
287		298
288	void	299	void
289	ev_set_allocator (void (cb)(void *ptr, size_t size))	300	ev_set_allocator (void (cb)(void *ptr, long size))
290	{	301	{
291	alloc = cb;	302	alloc = cb;
292	}	303	}
293		304
294	inline_speed void *	305	inline_speed void *
295	ev_realloc (void *ptr, size_t size)	306	ev_realloc (void *ptr, long size)
296	{	307	{
297	ptr = alloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
298		309
299	if (!ptr && size)	310	if (!ptr && size)
300	{	311	{
301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);	312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
302	abort ();	313	abort ();
303	}	314	}
304		315
305	return ptr;	316	return ptr;
306	}	317	}
…		…
324	{	335	{
325	W w;	336	W w;
326	int events;	337	int events;
327	} ANPENDING;	338	} ANPENDING;
328		339
		340	#if EV_USE_INOTIFY
329	typedef struct	341	typedef struct
330	{	342	{
331	#if EV_USE_INOTIFY
332	WL head;	343	WL head;
333	#endif
334	} ANFS;	344	} ANFS;
		345	#endif
335		346
336	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
337		348
338	struct ev_loop	349	struct ev_loop
339	{	350	{
…		…
396	{	407	{
397	return ev_rt_now;	408	return ev_rt_now;
398	}	409	}
399	#endif	410	#endif
400		411
401	#define array_roundsize(type,n) (((n) \| 4) & ~3)	412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		426	ncur = ncur - sizeof (void ) 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void base, int cur, int cnt)
		435	{
		436	cur = array_nextsize (elem, cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
402		439
403	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
404	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
405	{ \	442	{ \
406	int newcnt = cur; \	443	int ocur_ = (cur); \
407	do \	444	(base) = (type *)array_realloc \
408	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
409	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
410	} \
411	while ((cnt) > newcnt); \
412	\
413	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
414	init (base + cur, newcnt - cur); \
415	cur = newcnt; \
416	}	447	}
417		448
		449	#if 0
418	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
420	{ \	452	{ \
421	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
422	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	454	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
424	}	456	}
		457	#endif
425		458
426	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
428		461
429	/*****************************************************************************/	462	/*****************************************************************************/
430		463
431	void noinline	464	void noinline
432	ev_feed_event (EV_P_ void *w, int revents)	465	ev_feed_event (EV_P_ void *w, int revents)
433	{	466	{
434	W w_ = (W)w;	467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
435		469
436	if (expect_false (w_->pending))	470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events \|= revents;
		472	else
437	{	473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
438	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	477	pendings [pri][w_->pending - 1].events = revents;
439	return;
440	}	478	}
441
442	w_->pending = ++pendingcnt [ABSPRI (w_)];
443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
446	}	479	}
447		480
448	void inline_size	481	void inline_speed
449	queue_events (EV_P_ W *events, int eventcnt, int type)	482	queue_events (EV_P_ W *events, int eventcnt, int type)
450	{	483	{
451	int i;	484	int i;
452		485
453	for (i = 0; i < eventcnt; ++i)	486	for (i = 0; i < eventcnt; ++i)
…		…
485	}	518	}
486		519
487	void	520	void
488	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
489	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
490	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
491	}	525	}
492		526
493	void inline_size	527	void inline_size
494	fd_reify (EV_P)	528	fd_reify (EV_P)
495	{	529	{
…		…
499	{	533	{
500	int fd = fdchanges [i];	534	int fd = fdchanges [i];
501	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
502	ev_io *w;	536	ev_io *w;
503		537
504	int events = 0;	538	unsigned char events = 0;
505		539
506	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	540	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
507	events \|= w->events;	541	events \|= (unsigned char)w->events;
508		542
509	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
510	if (events)	544	if (events)
511	{	545	{
512	unsigned long argp;	546	unsigned long argp;
513	anfd->handle = _get_osfhandle (fd);	547	anfd->handle = _get_osfhandle (fd);
514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
515	}	549	}
516	#endif	550	#endif
517		551
		552	{
		553	unsigned char o_events = anfd->events;
		554	unsigned char o_reify = anfd->reify;
		555
518	anfd->reify = 0;	556	anfd->reify = 0;
519
520	backend_modify (EV_A_ fd, anfd->events, events);
521	anfd->events = events;	557	anfd->events = events;
		558
		559	if (o_events != events \|\| o_reify & EV_IOFDSET)
		560	backend_modify (EV_A_ fd, o_events, events);
		561	}
522	}	562	}
523		563
524	fdchangecnt = 0;	564	fdchangecnt = 0;
525	}	565	}
526		566
527	void inline_size	567	void inline_size
528	fd_change (EV_P_ int fd)	568	fd_change (EV_P_ int fd, int flags)
529	{	569	{
530	if (expect_false (anfds [fd].reify))	570	unsigned char reify = anfds [fd].reify;
531	return;
532
533	anfds [fd].reify = 1;	571	anfds [fd].reify \|= flags;
534		572
		573	if (expect_true (!reify))
		574	{
535	++fdchangecnt;	575	++fdchangecnt;
536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
537	fdchanges [fdchangecnt - 1] = fd;	577	fdchanges [fdchangecnt - 1] = fd;
		578	}
538	}	579	}
539		580
540	void inline_speed	581	void inline_speed
541	fd_kill (EV_P_ int fd)	582	fd_kill (EV_P_ int fd)
542	{	583	{
…		…
589	static void noinline	630	static void noinline
590	fd_rearm_all (EV_P)	631	fd_rearm_all (EV_P)
591	{	632	{
592	int fd;	633	int fd;
593		634
594	/* this should be highly optimised to not do anything but set a flag */
595	for (fd = 0; fd < anfdmax; ++fd)	635	for (fd = 0; fd < anfdmax; ++fd)
596	if (anfds [fd].events)	636	if (anfds [fd].events)
597	{	637	{
598	anfds [fd].events = 0;	638	anfds [fd].events = 0;
599	fd_change (EV_A_ fd);	639	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
600	}	640	}
601	}	641	}
602		642
603	/*****************************************************************************/	643	/*****************************************************************************/
604		644
605	void inline_speed	645	void inline_speed
606	upheap (WT *heap, int k)	646	upheap (WT *heap, int k)
607	{	647	{
608	WT w = heap [k];	648	WT w = heap [k];
609		649
610	while (k && heap [k >> 1]->at > w->at)	650	while (k)
611	{	651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
612	heap [k] = heap [k >> 1];	657	heap [k] = heap [p];
613	((W)heap [k])->active = k + 1;	658	((W)heap [k])->active = k + 1;
614	k >>= 1;	659	k = p;
615	}	660	}
616		661
617	heap [k] = w;	662	heap [k] = w;
618	((W)heap [k])->active = k + 1;	663	((W)heap [k])->active = k + 1;
619
620	}	664	}
621		665
622	void inline_speed	666	void inline_speed
623	downheap (WT *heap, int N, int k)	667	downheap (WT *heap, int N, int k)
624	{	668	{
625	WT w = heap [k];	669	WT w = heap [k];
626		670
627	while (k < (N >> 1))	671	for (;;)
628	{	672	{
629	int j = k << 1;	673	int c = (k << 1) + 1;
630		674
631	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	675	if (c >= N)
632	++j;
633
634	if (w->at <= heap [j]->at)
635	break;	676	break;
636		677
		678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		679	? 1 : 0;
		680
		681	if (w->at <= heap [c]->at)
		682	break;
		683
637	heap [k] = heap [j];	684	heap [k] = heap [c];
638	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686
639	k = j;	687	k = c;
640	}	688	}
641		689
642	heap [k] = w;	690	heap [k] = w;
643	((W)heap [k])->active = k + 1;	691	((W)heap [k])->active = k + 1;
644	}	692	}
…		…
726	for (signum = signalmax; signum--; )	774	for (signum = signalmax; signum--; )
727	if (signals [signum].gotsig)	775	if (signals [signum].gotsig)
728	ev_feed_signal_event (EV_A_ signum + 1);	776	ev_feed_signal_event (EV_A_ signum + 1);
729	}	777	}
730		778
731	void inline_size	779	void inline_speed
732	fd_intern (int fd)	780	fd_intern (int fd)
733	{	781	{
734	#ifdef _WIN32	782	#ifdef _WIN32
735	int arg = 1;	783	int arg = 1;
736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	784	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	799	ev_unref (EV_A); /* child watcher should not keep loop alive */
752	}	800	}
753		801
754	/*****************************************************************************/	802	/*****************************************************************************/
755		803
756	static ev_child *childs [EV_PID_HASHSIZE];	804	static WL childs [EV_PID_HASHSIZE];
757		805
758	#ifndef _WIN32	806	#ifndef _WIN32
759		807
760	static ev_signal childev;	808	static ev_signal childev;
761		809
…		…
765	ev_child *w;	813	ev_child *w;
766		814
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	815	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
768	if (w->pid == pid \|\| !w->pid)	816	if (w->pid == pid \|\| !w->pid)
769	{	817	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	818	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	819	w->rpid = pid;
772	w->rstatus = status;	820	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	821	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	822	}
775	}	823	}
776		824
777	#ifndef WCONTINUED	825	#ifndef WCONTINUED
…		…
887	ev_backend (EV_P)	935	ev_backend (EV_P)
888	{	936	{
889	return backend;	937	return backend;
890	}	938	}
891		939
		940	unsigned int
		941	ev_loop_count (EV_P)
		942	{
		943	return loop_count;
		944	}
		945
892	static void noinline	946	static void noinline
893	loop_init (EV_P_ unsigned int flags)	947	loop_init (EV_P_ unsigned int flags)
894	{	948	{
895	if (!backend)	949	if (!backend)
896	{	950	{
…		…
905	ev_rt_now = ev_time ();	959	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	960	mn_now = get_clock ();
907	now_floor = mn_now;	961	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	962	rtmn_diff = ev_rt_now - mn_now;
909		963
		964	/* pid check not overridable via env */
		965	#ifndef _WIN32
		966	if (flags & EVFLAG_FORKCHECK)
		967	curpid = getpid ();
		968	#endif
		969
910	if (!(flags & EVFLAG_NOENV)	970	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	971	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	972	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	973	flags = atoi (getenv ("LIBEV_FLAGS"));
914		974
…		…
970	#if EV_USE_SELECT	1030	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1032	#endif
973		1033
974	for (i = NUMPRI; i--; )	1034	for (i = NUMPRI; i--; )
		1035	{
975	array_free (pending, [i]);	1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
976		1041
977	/* have to use the microsoft-never-gets-it-right macro */	1042	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1043	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1044	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1045	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1046	array_free (periodic, EMPTY);
982	#endif	1047	#endif
983	array_free (idle, EMPTY0);
984	array_free (prepare, EMPTY0);	1048	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1049	array_free (check, EMPTY);
986		1050
987	backend = 0;	1051	backend = 0;
988	}	1052	}
		1053
		1054	void inline_size infy_fork (EV_P);
989		1055
990	void inline_size	1056	void inline_size
991	loop_fork (EV_P)	1057	loop_fork (EV_P)
992	{	1058	{
993	#if EV_USE_PORT	1059	#if EV_USE_PORT
…		…
996	#if EV_USE_KQUEUE	1062	#if EV_USE_KQUEUE
997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1063	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
998	#endif	1064	#endif
999	#if EV_USE_EPOLL	1065	#if EV_USE_EPOLL
1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1066	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1067	#endif
		1068	#if EV_USE_INOTIFY
		1069	infy_fork (EV_A);
1001	#endif	1070	#endif
1002		1071
1003	if (ev_is_active (&sigev))	1072	if (ev_is_active (&sigev))
1004	{	1073	{
1005	/* default loop */	1074	/* default loop */
…		…
1121	postfork = 1;	1190	postfork = 1;
1122	}	1191	}
1123		1192
1124	/*****************************************************************************/	1193	/*****************************************************************************/
1125		1194
1126	int inline_size	1195	void
1127	any_pending (EV_P)	1196	ev_invoke (EV_P_ void *w, int revents)
1128	{	1197	{
1129	int pri;	1198	EV_CB_INVOKE ((W)w, revents);
1130
1131	for (pri = NUMPRI; pri--; )
1132	if (pendingcnt [pri])
1133	return 1;
1134
1135	return 0;
1136	}	1199	}
1137		1200
1138	void inline_speed	1201	void inline_speed
1139	call_pending (EV_P)	1202	call_pending (EV_P)
1140	{	1203	{
…		…
1158	void inline_size	1221	void inline_size
1159	timers_reify (EV_P)	1222	timers_reify (EV_P)
1160	{	1223	{
1161	while (timercnt && ((WT)timers [0])->at <= mn_now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
1162	{	1225	{
1163	ev_timer *w = timers [0];	1226	ev_timer w = (ev_timer )timers [0];
1164		1227
1165	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1228	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1166		1229
1167	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
1168	if (w->repeat)	1231	if (w->repeat)
…		…
1171		1234
1172	((WT)w)->at += w->repeat;	1235	((WT)w)->at += w->repeat;
1173	if (((WT)w)->at < mn_now)	1236	if (((WT)w)->at < mn_now)
1174	((WT)w)->at = mn_now;	1237	((WT)w)->at = mn_now;
1175		1238
1176	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
1177	}	1240	}
1178	else	1241	else
1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1180		1243
1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1186	void inline_size	1249	void inline_size
1187	periodics_reify (EV_P)	1250	periodics_reify (EV_P)
1188	{	1251	{
1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1190	{	1253	{
1191	ev_periodic *w = periodics [0];	1254	ev_periodic w = (ev_periodic )periodics [0];
1192		1255
1193	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1256	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1194		1257
1195	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
1196	if (w->reschedule_cb)	1259	if (w->reschedule_cb)
1197	{	1260	{
1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1199	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1200	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1201	}	1264	}
1202	else if (w->interval)	1265	else if (w->interval)
1203	{	1266	{
1204	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1205	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1206	downheap ((WT *)periodics, periodiccnt, 0);	1270	downheap (periodics, periodiccnt, 0);
1207	}	1271	}
1208	else	1272	else
1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1210		1274
1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1218	int i;	1282	int i;
1219		1283
1220	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
1221	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
1222	{	1286	{
1223	ev_periodic *w = periodics [i];	1287	ev_periodic w = (ev_periodic )periodics [i];
1224		1288
1225	if (w->reschedule_cb)	1289	if (w->reschedule_cb)
1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1227	else if (w->interval)	1291	else if (w->interval)
1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1229	}	1293	}
1230		1294
1231	/* now rebuild the heap */	1295	/* now rebuild the heap */
1232	for (i = periodiccnt >> 1; i--; )	1296	for (i = periodiccnt >> 1; i--; )
1233	downheap ((WT *)periodics, periodiccnt, i);	1297	downheap (periodics, periodiccnt, i);
1234	}	1298	}
1235	#endif	1299	#endif
1236		1300
		1301	#if EV_IDLE_ENABLE
1237	int inline_size	1302	void inline_size
1238	time_update_monotonic (EV_P)	1303	idle_reify (EV_P)
1239	{	1304	{
		1305	if (expect_false (idleall))
		1306	{
		1307	int pri;
		1308
		1309	for (pri = NUMPRI; pri--; )
		1310	{
		1311	if (pendingcnt [pri])
		1312	break;
		1313
		1314	if (idlecnt [pri])
		1315	{
		1316	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322	#endif
		1323
		1324	void inline_speed
		1325	time_update (EV_P_ ev_tstamp max_block)
		1326	{
		1327	int i;
		1328
		1329	#if EV_USE_MONOTONIC
		1330	if (expect_true (have_monotonic))
		1331	{
		1332	ev_tstamp odiff = rtmn_diff;
		1333
1240	mn_now = get_clock ();	1334	mn_now = get_clock ();
1241		1335
		1336	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1337	/* interpolate in the meantime */
1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1243	{	1339	{
1244	ev_rt_now = rtmn_diff + mn_now;	1340	ev_rt_now = rtmn_diff + mn_now;
1245	return 0;	1341	return;
1246	}	1342	}
1247	else	1343
1248	{
1249	now_floor = mn_now;	1344	now_floor = mn_now;
1250	ev_rt_now = ev_time ();	1345	ev_rt_now = ev_time ();
1251	return 1;
1252	}
1253	}
1254		1346
1255	void inline_size	1347	/* loop a few times, before making important decisions.
1256	time_update (EV_P)	1348	* on the choice of "4": one iteration isn't enough,
1257	{	1349	* in case we get preempted during the calls to
1258	int i;	1350	* ev_time and get_clock. a second call is almost guaranteed
1259		1351	* to succeed in that case, though. and looping a few more times
1260	#if EV_USE_MONOTONIC	1352	* doesn't hurt either as we only do this on time-jumps or
1261	if (expect_true (have_monotonic))	1353	* in the unlikely event of having been preempted here.
1262	{	1354	*/
1263	if (time_update_monotonic (EV_A))	1355	for (i = 4; --i; )
1264	{	1356	{
1265	ev_tstamp odiff = rtmn_diff;
1266
1267	/* loop a few times, before making important decisions.
1268	* on the choice of "4": one iteration isn't enough,
1269	* in case we get preempted during the calls to
1270	* ev_time and get_clock. a second call is almost guarenteed
1271	* to succeed in that case, though. and looping a few more times
1272	* doesn't hurt either as we only do this on time-jumps or
1273	* in the unlikely event of getting preempted here.
1274	*/
1275	for (i = 4; --i; )
1276	{
1277	rtmn_diff = ev_rt_now - mn_now;	1357	rtmn_diff = ev_rt_now - mn_now;
1278		1358
1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1280	return; /* all is well */	1360	return; /* all is well */
1281		1361
1282	ev_rt_now = ev_time ();	1362	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1363	mn_now = get_clock ();
1284	now_floor = mn_now;	1364	now_floor = mn_now;
1285	}	1365	}
1286		1366
1287	# if EV_PERIODIC_ENABLE	1367	# if EV_PERIODIC_ENABLE
1288	periodics_reschedule (EV_A);	1368	periodics_reschedule (EV_A);
1289	# endif	1369	# endif
1290	/* no timer adjustment, as the monotonic clock doesn't jump */	1370	/* no timer adjustment, as the monotonic clock doesn't jump */
1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1371	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1292	}
1293	}	1372	}
1294	else	1373	else
1295	#endif	1374	#endif
1296	{	1375	{
1297	ev_rt_now = ev_time ();	1376	ev_rt_now = ev_time ();
1298		1377
1299	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1378	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1300	{	1379	{
1301	#if EV_PERIODIC_ENABLE	1380	#if EV_PERIODIC_ENABLE
1302	periodics_reschedule (EV_A);	1381	periodics_reschedule (EV_A);
1303	#endif	1382	#endif
1304
1305	/* adjust timers. this is easy, as the offset is the same for all */	1383	/* adjust timers. this is easy, as the offset is the same for all of them */
1306	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
1307	((WT)timers [i])->at += ev_rt_now - mn_now;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
1308	}	1386	}
1309		1387
1310	mn_now = ev_rt_now;	1388	mn_now = ev_rt_now;
…		…
1330	{	1408	{
1331	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1409	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1332	? EVUNLOOP_ONE	1410	? EVUNLOOP_ONE
1333	: EVUNLOOP_CANCEL;	1411	: EVUNLOOP_CANCEL;
1334		1412
1335	while (activecnt)	1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1414
		1415	do
1336	{	1416	{
1337	/* we might have forked, so reify kernel state if necessary */	1417	#ifndef _WIN32
		1418	if (expect_false (curpid)) /* penalise the forking check even more */
		1419	if (expect_false (getpid () != curpid))
		1420	{
		1421	curpid = getpid ();
		1422	postfork = 1;
		1423	}
		1424	#endif
		1425
1338	#if EV_FORK_ENABLE	1426	#if EV_FORK_ENABLE
		1427	/* we might have forked, so queue fork handlers */
1339	if (expect_false (postfork))	1428	if (expect_false (postfork))
1340	if (forkcnt)	1429	if (forkcnt)
1341	{	1430	{
1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1431	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343	call_pending (EV_A);	1432	call_pending (EV_A);
1344	}	1433	}
1345	#endif	1434	#endif
1346		1435
1347	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
1348	if (expect_false (preparecnt))	1437	if (expect_false (preparecnt))
1349	{	1438	{
1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1351	call_pending (EV_A);	1440	call_pending (EV_A);
1352	}	1441	}
1353		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
1354	/* we might have forked, so reify kernel state if necessary */	1446	/* we might have forked, so reify kernel state if necessary */
1355	if (expect_false (postfork))	1447	if (expect_false (postfork))
1356	loop_fork (EV_A);	1448	loop_fork (EV_A);
1357		1449
1358	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
1359	fd_reify (EV_A);	1451	fd_reify (EV_A);
1360		1452
1361	/* calculate blocking time */	1453	/* calculate blocking time */
1362	{	1454	{
1363	double block;	1455	ev_tstamp block;
1364		1456
1365	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1457	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1366	block = 0.; /* do not block at all */	1458	block = 0.; /* do not block at all */
1367	else	1459	else
1368	{	1460	{
1369	/* update time to cancel out callback processing overhead */	1461	/* update time to cancel out callback processing overhead */
1370	#if EV_USE_MONOTONIC
1371	if (expect_true (have_monotonic))
1372	time_update_monotonic (EV_A);	1462	time_update (EV_A_ 1e100);
1373	else
1374	#endif
1375	{
1376	ev_rt_now = ev_time ();
1377	mn_now = ev_rt_now;
1378	}
1379		1463
1380	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
1381		1465
1382	if (timercnt)	1466	if (timercnt)
1383	{	1467	{
…		…
1394	#endif	1478	#endif
1395		1479
1396	if (expect_false (block < 0.)) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
1397	}	1481	}
1398		1482
		1483	++loop_count;
1399	backend_poll (EV_A_ block);	1484	backend_poll (EV_A_ block);
		1485
		1486	/* update ev_rt_now, do magic */
		1487	time_update (EV_A_ block);
1400	}	1488	}
1401
1402	/* update ev_rt_now, do magic */
1403	time_update (EV_A);
1404		1489
1405	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
1406	timers_reify (EV_A); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
1407	#if EV_PERIODIC_ENABLE	1492	#if EV_PERIODIC_ENABLE
1408	periodics_reify (EV_A); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
1409	#endif	1494	#endif
1410		1495
		1496	#if EV_IDLE_ENABLE
1411	/* queue idle watchers unless other events are pending */	1497	/* queue idle watchers unless other events are pending */
1412	if (idlecnt && !any_pending (EV_A))	1498	idle_reify (EV_A);
1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1499	#endif
1414		1500
1415	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
1416	if (expect_false (checkcnt))	1502	if (expect_false (checkcnt))
1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1418		1504
1419	call_pending (EV_A);	1505	call_pending (EV_A);
1420		1506
1421	if (expect_false (loop_done))
1422	break;
1423	}	1507	}
		1508	while (expect_true (activecnt && !loop_done));
1424		1509
1425	if (loop_done == EVUNLOOP_ONE)	1510	if (loop_done == EVUNLOOP_ONE)
1426	loop_done = EVUNLOOP_CANCEL;	1511	loop_done = EVUNLOOP_CANCEL;
1427	}	1512	}
1428		1513
…		…
1455	head = &(*head)->next;	1540	head = &(*head)->next;
1456	}	1541	}
1457	}	1542	}
1458		1543
1459	void inline_speed	1544	void inline_speed
1460	ev_clear_pending (EV_P_ W w)	1545	clear_pending (EV_P_ W w)
1461	{	1546	{
1462	if (w->pending)	1547	if (w->pending)
1463	{	1548	{
1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1465	w->pending = 0;	1550	w->pending = 0;
1466	}	1551	}
1467	}	1552	}
1468		1553
		1554	int
		1555	ev_clear_pending (EV_P_ void *w)
		1556	{
		1557	W w_ = (W)w;
		1558	int pending = w_->pending;
		1559
		1560	if (expect_true (pending))
		1561	{
		1562	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1563	w_->pending = 0;
		1564	p->w = 0;
		1565	return p->events;
		1566	}
		1567	else
		1568	return 0;
		1569	}
		1570
		1571	void inline_size
		1572	pri_adjust (EV_P_ W w)
		1573	{
		1574	int pri = w->priority;
		1575	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1576	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1577	w->priority = pri;
		1578	}
		1579
1469	void inline_speed	1580	void inline_speed
1470	ev_start (EV_P_ W w, int active)	1581	ev_start (EV_P_ W w, int active)
1471	{	1582	{
1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1583	pri_adjust (EV_A_ w);
1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1474
1475	w->active = active;	1584	w->active = active;
1476	ev_ref (EV_A);	1585	ev_ref (EV_A);
1477	}	1586	}
1478		1587
1479	void inline_size	1588	void inline_size
…		…
1483	w->active = 0;	1592	w->active = 0;
1484	}	1593	}
1485		1594
1486	/*****************************************************************************/	1595	/*****************************************************************************/
1487		1596
1488	void	1597	void noinline
1489	ev_io_start (EV_P_ ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
1490	{	1599	{
1491	int fd = w->fd;	1600	int fd = w->fd;
1492		1601
1493	if (expect_false (ev_is_active (w)))	1602	if (expect_false (ev_is_active (w)))
…		…
1495		1604
1496	assert (("ev_io_start called with negative fd", fd >= 0));	1605	assert (("ev_io_start called with negative fd", fd >= 0));
1497		1606
1498	ev_start (EV_A_ (W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
1501		1610
1502	fd_change (EV_A_ fd);	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1612	w->events &= ~EV_IOFDSET;
1503	}	1613	}
1504		1614
1505	void	1615	void noinline
1506	ev_io_stop (EV_P_ ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1507	{	1617	{
1508	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))	1619	if (expect_false (!ev_is_active (w)))
1510	return;	1620	return;
1511		1621
1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1513		1623
1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
1515	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1516		1626
1517	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd, 1);
1518	}	1628	}
1519		1629
1520	void	1630	void noinline
1521	ev_timer_start (EV_P_ ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
1522	{	1632	{
1523	if (expect_false (ev_is_active (w)))	1633	if (expect_false (ev_is_active (w)))
1524	return;	1634	return;
1525		1635
1526	((WT)w)->at += mn_now;	1636	((WT)w)->at += mn_now;
1527		1637
1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1529		1639
1530	ev_start (EV_A_ (W)w, ++timercnt);	1640	ev_start (EV_A_ (W)w, ++timercnt);
1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1532	timers [timercnt - 1] = w;	1642	timers [timercnt - 1] = (WT)w;
1533	upheap ((WT *)timers, timercnt - 1);	1643	upheap (timers, timercnt - 1);
1534		1644
1535	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1645	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1536	}	1646	}
1537		1647
1538	void	1648	void noinline
1539	ev_timer_stop (EV_P_ ev_timer *w)	1649	ev_timer_stop (EV_P_ ev_timer *w)
1540	{	1650	{
1541	ev_clear_pending (EV_A_ (W)w);	1651	clear_pending (EV_A_ (W)w);
1542	if (expect_false (!ev_is_active (w)))	1652	if (expect_false (!ev_is_active (w)))
1543	return;	1653	return;
1544		1654
1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1546		1656
1547	{	1657	{
1548	int active = ((W)w)->active;	1658	int active = ((W)w)->active;
1549		1659
1550	if (expect_true (--active < --timercnt))	1660	if (expect_true (--active < --timercnt))
1551	{	1661	{
1552	timers [active] = timers [timercnt];	1662	timers [active] = timers [timercnt];
1553	adjustheap ((WT *)timers, timercnt, active);	1663	adjustheap (timers, timercnt, active);
1554	}	1664	}
1555	}	1665	}
1556		1666
1557	((WT)w)->at -= mn_now;	1667	((WT)w)->at -= mn_now;
1558		1668
1559	ev_stop (EV_A_ (W)w);	1669	ev_stop (EV_A_ (W)w);
1560	}	1670	}
1561		1671
1562	void	1672	void noinline
1563	ev_timer_again (EV_P_ ev_timer *w)	1673	ev_timer_again (EV_P_ ev_timer *w)
1564	{	1674	{
1565	if (ev_is_active (w))	1675	if (ev_is_active (w))
1566	{	1676	{
1567	if (w->repeat)	1677	if (w->repeat)
1568	{	1678	{
1569	((WT)w)->at = mn_now + w->repeat;	1679	((WT)w)->at = mn_now + w->repeat;
1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
1571	}	1681	}
1572	else	1682	else
1573	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1574	}	1684	}
1575	else if (w->repeat)	1685	else if (w->repeat)
…		…
1578	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
1579	}	1689	}
1580	}	1690	}
1581		1691
1582	#if EV_PERIODIC_ENABLE	1692	#if EV_PERIODIC_ENABLE
1583	void	1693	void noinline
1584	ev_periodic_start (EV_P_ ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1585	{	1695	{
1586	if (expect_false (ev_is_active (w)))	1696	if (expect_false (ev_is_active (w)))
1587	return;	1697	return;
1588		1698
…		…
1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1591	else if (w->interval)	1701	else if (w->interval)
1592	{	1702	{
1593	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1594	/* this formula differs from the one in periodic_reify because we do not always round up */	1704	/* this formula differs from the one in periodic_reify because we do not always round up */
1595	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1596	}	1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1597		1709
1598	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1600	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
1601	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
1602		1714
1603	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1715	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1604	}	1716	}
1605		1717
1606	void	1718	void noinline
1607	ev_periodic_stop (EV_P_ ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1608	{	1720	{
1609	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1610	if (expect_false (!ev_is_active (w)))	1722	if (expect_false (!ev_is_active (w)))
1611	return;	1723	return;
1612		1724
1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1614		1726
1615	{	1727	{
1616	int active = ((W)w)->active;	1728	int active = ((W)w)->active;
1617		1729
1618	if (expect_true (--active < --periodiccnt))	1730	if (expect_true (--active < --periodiccnt))
1619	{	1731	{
1620	periodics [active] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1621	adjustheap ((WT *)periodics, periodiccnt, active);	1733	adjustheap (periodics, periodiccnt, active);
1622	}	1734	}
1623	}	1735	}
1624		1736
1625	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1626	}	1738	}
1627		1739
1628	void	1740	void noinline
1629	ev_periodic_again (EV_P_ ev_periodic *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1630	{	1742	{
1631	/* TODO: use adjustheap and recalculation */	1743	/* TODO: use adjustheap and recalculation */
1632	ev_periodic_stop (EV_A_ w);	1744	ev_periodic_stop (EV_A_ w);
1633	ev_periodic_start (EV_A_ w);	1745	ev_periodic_start (EV_A_ w);
…		…
1636		1748
1637	#ifndef SA_RESTART	1749	#ifndef SA_RESTART
1638	# define SA_RESTART 0	1750	# define SA_RESTART 0
1639	#endif	1751	#endif
1640		1752
1641	void	1753	void noinline
1642	ev_signal_start (EV_P_ ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1643	{	1755	{
1644	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1757	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1646	#endif	1758	#endif
1647	if (expect_false (ev_is_active (w)))	1759	if (expect_false (ev_is_active (w)))
1648	return;	1760	return;
1649		1761
1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1651		1763
		1764	{
		1765	#ifndef _WIN32
		1766	sigset_t full, prev;
		1767	sigfillset (&full);
		1768	sigprocmask (SIG_SETMASK, &full, &prev);
		1769	#endif
		1770
		1771	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1772
		1773	#ifndef _WIN32
		1774	sigprocmask (SIG_SETMASK, &prev, 0);
		1775	#endif
		1776	}
		1777
1652	ev_start (EV_A_ (W)w, 1);	1778	ev_start (EV_A_ (W)w, 1);
1653	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1654	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
1655		1780
1656	if (!((WL)w)->next)	1781	if (!((WL)w)->next)
1657	{	1782	{
1658	#if _WIN32	1783	#if _WIN32
1659	signal (w->signum, sighandler);	1784	signal (w->signum, sighandler);
…		…
1665	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
1666	#endif	1791	#endif
1667	}	1792	}
1668	}	1793	}
1669		1794
1670	void	1795	void noinline
1671	ev_signal_stop (EV_P_ ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
1672	{	1797	{
1673	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1674	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1675	return;	1800	return;
1676		1801
1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
1678	ev_stop (EV_A_ (W)w);	1803	ev_stop (EV_A_ (W)w);
1679		1804
1680	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
1681	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
1682	}	1807	}
…		…
1689	#endif	1814	#endif
1690	if (expect_false (ev_is_active (w)))	1815	if (expect_false (ev_is_active (w)))
1691	return;	1816	return;
1692		1817
1693	ev_start (EV_A_ (W)w, 1);	1818	ev_start (EV_A_ (W)w, 1);
1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1695	}	1820	}
1696		1821
1697	void	1822	void
1698	ev_child_stop (EV_P_ ev_child *w)	1823	ev_child_stop (EV_P_ ev_child *w)
1699	{	1824	{
1700	ev_clear_pending (EV_A_ (W)w);	1825	clear_pending (EV_A_ (W)w);
1701	if (expect_false (!ev_is_active (w)))	1826	if (expect_false (!ev_is_active (w)))
1702	return;	1827	return;
1703		1828
1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705	ev_stop (EV_A_ (W)w);	1830	ev_stop (EV_A_ (W)w);
1706	}	1831	}
1707		1832
1708	#if EV_STAT_ENABLE	1833	#if EV_STAT_ENABLE
1709		1834
…		…
1713	# endif	1838	# endif
1714		1839
1715	#define DEF_STAT_INTERVAL 5.0074891	1840	#define DEF_STAT_INTERVAL 5.0074891
1716	#define MIN_STAT_INTERVAL 0.1074891	1841	#define MIN_STAT_INTERVAL 0.1074891
1717		1842
1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1843	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719		1844
1720	#if EV_USE_INOTIFY	1845	#if EV_USE_INOTIFY
1721	# define EV_INOTIFY_BUFSIZE ((PATH_MAX + sizeof (struct inotify_event)) + 2048)	1846	# define EV_INOTIFY_BUFSIZE 8192
1722		1847
1723	static void noinline	1848	static void noinline
1724	infy_add (EV_P_ ev_stat *w)	1849	infy_add (EV_P_ ev_stat *w)
1725	{	1850	{
1726	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);	1851	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB \| IN_DELETE_SELF \| IN_MOVE_SELF \| IN_MODIFY \| IN_DONT_FOLLOW \| IN_MASK_ADD);
…		…
1728	if (w->wd < 0)	1853	if (w->wd < 0)
1729	{	1854	{
1730	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	1855	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
1731		1856
1732	/* monitor some parent directory for speedup hints */	1857	/* monitor some parent directory for speedup hints */
1733	if (errno == ENOENT \|\| errno == EACCES)	1858	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
1734	{	1859	{
1735	char path [PATH_MAX];	1860	char path [4096];
1736	strcpy (path, w->path);	1861	strcpy (path, w->path);
1737		1862
1738	do	1863	do
1739	{	1864	{
1740	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF	1865	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
…		…
1744		1869
1745	if (!pend)	1870	if (!pend)
1746	break; /* whoops, no '/', complain to your admin */	1871	break; /* whoops, no '/', complain to your admin */
1747		1872
1748	*pend = 0;	1873	*pend = 0;
1749	w->wd = inotify_add_watch (fs_fd, path, IN_DELETE_SELF \| IN_CREATE \| IN_MOVED_TO \| IN_MASK_ADD);	1874	w->wd = inotify_add_watch (fs_fd, path, mask);
1750	}	1875	}
1751	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	1876	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
1752	}	1877	}
1753	}	1878	}
1754	else	1879	else
…		…
1759	}	1884	}
1760		1885
1761	static void noinline	1886	static void noinline
1762	infy_del (EV_P_ ev_stat *w)	1887	infy_del (EV_P_ ev_stat *w)
1763	{	1888	{
1764	WL w_;
1765	int slot;	1889	int slot;
1766	int wd = w->wd;	1890	int wd = w->wd;
1767		1891
1768	if (wd < 0)	1892	if (wd < 0)
1769	return;	1893	return;
…		…
1798	{	1922	{
1799	w->wd = -1;	1923	w->wd = -1;
1800	infy_add (EV_A_ w); /* re-add, no matter what */	1924	infy_add (EV_A_ w); /* re-add, no matter what */
1801	}	1925	}
1802		1926
1803	stat_timer_cb (EV_P_ &w->timer, 0);	1927	stat_timer_cb (EV_A_ &w->timer, 0);
1804	}	1928	}
1805	}	1929	}
1806	}	1930	}
1807	}	1931	}
1808		1932
…		…
1832	ev_set_priority (&fs_w, EV_MAXPRI);	1956	ev_set_priority (&fs_w, EV_MAXPRI);
1833	ev_io_start (EV_A_ &fs_w);	1957	ev_io_start (EV_A_ &fs_w);
1834	}	1958	}
1835	}	1959	}
1836		1960
		1961	void inline_size
		1962	infy_fork (EV_P)
		1963	{
		1964	int slot;
		1965
		1966	if (fs_fd < 0)
		1967	return;
		1968
		1969	close (fs_fd);
		1970	fs_fd = inotify_init ();
		1971
		1972	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1973	{
		1974	WL w_ = fs_hash [slot].head;
		1975	fs_hash [slot].head = 0;
		1976
		1977	while (w_)
		1978	{
		1979	ev_stat w = (ev_stat )w_;
		1980	w_ = w_->next; /* lets us add this watcher */
		1981
		1982	w->wd = -1;
		1983
		1984	if (fs_fd >= 0)
		1985	infy_add (EV_A_ w); /* re-add, no matter what */
		1986	else
		1987	ev_timer_start (EV_A_ &w->timer);
		1988	}
		1989
		1990	}
		1991	}
		1992
1837	#endif	1993	#endif
1838		1994
1839	void	1995	void
1840	ev_stat_stat (EV_P_ ev_stat *w)	1996	ev_stat_stat (EV_P_ ev_stat *w)
1841	{	1997	{
…		…
1843	w->attr.st_nlink = 0;	1999	w->attr.st_nlink = 0;
1844	else if (!w->attr.st_nlink)	2000	else if (!w->attr.st_nlink)
1845	w->attr.st_nlink = 1;	2001	w->attr.st_nlink = 1;
1846	}	2002	}
1847		2003
1848	void noinline	2004	static void noinline
1849	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2005	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1850	{	2006	{
1851	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2007	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1852		2008
1853	/* we copy this here each the time so that */	2009	/* we copy this here each the time so that */
1854	/* prev has the old value when the callback gets invoked */	2010	/* prev has the old value when the callback gets invoked */
1855	w->prev = w->attr;	2011	w->prev = w->attr;
1856	ev_stat_stat (EV_A_ w);	2012	ev_stat_stat (EV_A_ w);
1857		2013
1858	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2014	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2015	if (
		2016	w->prev.st_dev != w->attr.st_dev
		2017	\|\| w->prev.st_ino != w->attr.st_ino
		2018	\|\| w->prev.st_mode != w->attr.st_mode
		2019	\|\| w->prev.st_nlink != w->attr.st_nlink
		2020	\|\| w->prev.st_uid != w->attr.st_uid
		2021	\|\| w->prev.st_gid != w->attr.st_gid
		2022	\|\| w->prev.st_rdev != w->attr.st_rdev
		2023	\|\| w->prev.st_size != w->attr.st_size
		2024	\|\| w->prev.st_atime != w->attr.st_atime
		2025	\|\| w->prev.st_mtime != w->attr.st_mtime
		2026	\|\| w->prev.st_ctime != w->attr.st_ctime
1859	{	2027	) {
1860	#if EV_USE_INOTIFY	2028	#if EV_USE_INOTIFY
1861	infy_del (EV_A_ w);	2029	infy_del (EV_A_ w);
1862	infy_add (EV_A_ w);	2030	infy_add (EV_A_ w);
1863	ev_stat_stat (EV_A_ w); /* avoid race... */	2031	ev_stat_stat (EV_A_ w); /* avoid race... */
1864	#endif	2032	#endif
…		…
1898	}	2066	}
1899		2067
1900	void	2068	void
1901	ev_stat_stop (EV_P_ ev_stat *w)	2069	ev_stat_stop (EV_P_ ev_stat *w)
1902	{	2070	{
1903	ev_clear_pending (EV_A_ (W)w);	2071	clear_pending (EV_A_ (W)w);
1904	if (expect_false (!ev_is_active (w)))	2072	if (expect_false (!ev_is_active (w)))
1905	return;	2073	return;
1906		2074
1907	#if EV_USE_INOTIFY	2075	#if EV_USE_INOTIFY
1908	infy_del (EV_A_ w);	2076	infy_del (EV_A_ w);
…		…
1911		2079
1912	ev_stop (EV_A_ (W)w);	2080	ev_stop (EV_A_ (W)w);
1913	}	2081	}
1914	#endif	2082	#endif
1915		2083
		2084	#if EV_IDLE_ENABLE
1916	void	2085	void
1917	ev_idle_start (EV_P_ ev_idle *w)	2086	ev_idle_start (EV_P_ ev_idle *w)
1918	{	2087	{
1919	if (expect_false (ev_is_active (w)))	2088	if (expect_false (ev_is_active (w)))
1920	return;	2089	return;
1921		2090
		2091	pri_adjust (EV_A_ (W)w);
		2092
		2093	{
		2094	int active = ++idlecnt [ABSPRI (w)];
		2095
		2096	++idleall;
1922	ev_start (EV_A_ (W)w, ++idlecnt);	2097	ev_start (EV_A_ (W)w, active);
		2098
1923	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2099	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1924	idles [idlecnt - 1] = w;	2100	idles [ABSPRI (w)][active - 1] = w;
		2101	}
1925	}	2102	}
1926		2103
1927	void	2104	void
1928	ev_idle_stop (EV_P_ ev_idle *w)	2105	ev_idle_stop (EV_P_ ev_idle *w)
1929	{	2106	{
1930	ev_clear_pending (EV_A_ (W)w);	2107	clear_pending (EV_A_ (W)w);
1931	if (expect_false (!ev_is_active (w)))	2108	if (expect_false (!ev_is_active (w)))
1932	return;	2109	return;
1933		2110
1934	{	2111	{
1935	int active = ((W)w)->active;	2112	int active = ((W)w)->active;
1936	idles [active - 1] = idles [--idlecnt];	2113
		2114	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1937	((W)idles [active - 1])->active = active;	2115	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2116
		2117	ev_stop (EV_A_ (W)w);
		2118	--idleall;
1938	}	2119	}
1939
1940	ev_stop (EV_A_ (W)w);
1941	}	2120	}
		2121	#endif
1942		2122
1943	void	2123	void
1944	ev_prepare_start (EV_P_ ev_prepare *w)	2124	ev_prepare_start (EV_P_ ev_prepare *w)
1945	{	2125	{
1946	if (expect_false (ev_is_active (w)))	2126	if (expect_false (ev_is_active (w)))
…		…
1952	}	2132	}
1953		2133
1954	void	2134	void
1955	ev_prepare_stop (EV_P_ ev_prepare *w)	2135	ev_prepare_stop (EV_P_ ev_prepare *w)
1956	{	2136	{
1957	ev_clear_pending (EV_A_ (W)w);	2137	clear_pending (EV_A_ (W)w);
1958	if (expect_false (!ev_is_active (w)))	2138	if (expect_false (!ev_is_active (w)))
1959	return;	2139	return;
1960		2140
1961	{	2141	{
1962	int active = ((W)w)->active;	2142	int active = ((W)w)->active;
…		…
1979	}	2159	}
1980		2160
1981	void	2161	void
1982	ev_check_stop (EV_P_ ev_check *w)	2162	ev_check_stop (EV_P_ ev_check *w)
1983	{	2163	{
1984	ev_clear_pending (EV_A_ (W)w);	2164	clear_pending (EV_A_ (W)w);
1985	if (expect_false (!ev_is_active (w)))	2165	if (expect_false (!ev_is_active (w)))
1986	return;	2166	return;
1987		2167
1988	{	2168	{
1989	int active = ((W)w)->active;	2169	int active = ((W)w)->active;
…		…
2031	}	2211	}
2032		2212
2033	void	2213	void
2034	ev_embed_stop (EV_P_ ev_embed *w)	2214	ev_embed_stop (EV_P_ ev_embed *w)
2035	{	2215	{
2036	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
2037	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
2038	return;	2218	return;
2039		2219
2040	ev_io_stop (EV_A_ &w->io);	2220	ev_io_stop (EV_A_ &w->io);
2041		2221
…		…
2056	}	2236	}
2057		2237
2058	void	2238	void
2059	ev_fork_stop (EV_P_ ev_fork *w)	2239	ev_fork_stop (EV_P_ ev_fork *w)
2060	{	2240	{
2061	ev_clear_pending (EV_A_ (W)w);	2241	clear_pending (EV_A_ (W)w);
2062	if (expect_false (!ev_is_active (w)))	2242	if (expect_false (!ev_is_active (w)))
2063	return;	2243	return;
2064		2244
2065	{	2245	{
2066	int active = ((W)w)->active;	2246	int active = ((W)w)->active;

Diff Legend

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

Comparing libev/ev.c (file contents): Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC vs. Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.152 by root, Wed Nov 28 11:15:55 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 2007 UTC