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

Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.182 by root, Wed Dec 12 01:27:08 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	{
…		…
589	static void noinline	623	static void noinline
590	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
591	{	625	{
592	int fd;	626	int fd;
593		627
594	/* this should be highly optimised to not do anything but set a flag */
595	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
596	if (anfds [fd].events)	629	if (anfds [fd].events)
597	{	630	{
598	anfds [fd].events = 0;	631	anfds [fd].events = 0;
599	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
…		…
605	void inline_speed	638	void inline_speed
606	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
607	{	640	{
608	WT w = heap [k];	641	WT w = heap [k];
609		642
610	while (k && heap [k >> 1]->at > w->at)	643	while (k)
611	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
612	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
613	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
614	k >>= 1;	652	k = p;
615	}	653	}
616		654
617	heap [k] = w;	655	heap [k] = w;
618	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
619
620	}	657	}
621		658
622	void inline_speed	659	void inline_speed
623	downheap (WT *heap, int N, int k)	660	downheap (WT *heap, int N, int k)
624	{	661	{
625	WT w = heap [k];	662	WT w = heap [k];
626		663
627	while (k < (N >> 1))	664	for (;;)
628	{	665	{
629	int j = k << 1;	666	int c = (k << 1) + 1;
630		667
631	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	668	if (c >= N)
632	++j;
633
634	if (w->at <= heap [j]->at)
635	break;	669	break;
636		670
		671	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		672	? 1 : 0;
		673
		674	if (w->at <= heap [c]->at)
		675	break;
		676
637	heap [k] = heap [j];	677	heap [k] = heap [c];
638	((W)heap [k])->active = k + 1;	678	((W)heap [k])->active = k + 1;
		679
639	k = j;	680	k = c;
640	}	681	}
641		682
642	heap [k] = w;	683	heap [k] = w;
643	((W)heap [k])->active = k + 1;	684	((W)heap [k])->active = k + 1;
644	}	685	}
…		…
726	for (signum = signalmax; signum--; )	767	for (signum = signalmax; signum--; )
727	if (signals [signum].gotsig)	768	if (signals [signum].gotsig)
728	ev_feed_signal_event (EV_A_ signum + 1);	769	ev_feed_signal_event (EV_A_ signum + 1);
729	}	770	}
730		771
731	void inline_size	772	void inline_speed
732	fd_intern (int fd)	773	fd_intern (int fd)
733	{	774	{
734	#ifdef _WIN32	775	#ifdef _WIN32
735	int arg = 1;	776	int arg = 1;
736	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	777	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
751	ev_unref (EV_A); /* child watcher should not keep loop alive */	792	ev_unref (EV_A); /* child watcher should not keep loop alive */
752	}	793	}
753		794
754	/*****************************************************************************/	795	/*****************************************************************************/
755		796
756	static ev_child *childs [EV_PID_HASHSIZE];	797	static WL childs [EV_PID_HASHSIZE];
757		798
758	#ifndef _WIN32	799	#ifndef _WIN32
759		800
760	static ev_signal childev;	801	static ev_signal childev;
761		802
…		…
765	ev_child *w;	806	ev_child *w;
766		807
767	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	808	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
768	if (w->pid == pid \|\| !w->pid)	809	if (w->pid == pid \|\| !w->pid)
769	{	810	{
770	ev_priority (w) = ev_priority (sw); /* need to do it now */	811	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
771	w->rpid = pid;	812	w->rpid = pid;
772	w->rstatus = status;	813	w->rstatus = status;
773	ev_feed_event (EV_A_ (W)w, EV_CHILD);	814	ev_feed_event (EV_A_ (W)w, EV_CHILD);
774	}	815	}
775	}	816	}
776		817
777	#ifndef WCONTINUED	818	#ifndef WCONTINUED
…		…
887	ev_backend (EV_P)	928	ev_backend (EV_P)
888	{	929	{
889	return backend;	930	return backend;
890	}	931	}
891		932
		933	unsigned int
		934	ev_loop_count (EV_P)
		935	{
		936	return loop_count;
		937	}
		938
892	static void noinline	939	static void noinline
893	loop_init (EV_P_ unsigned int flags)	940	loop_init (EV_P_ unsigned int flags)
894	{	941	{
895	if (!backend)	942	if (!backend)
896	{	943	{
…		…
905	ev_rt_now = ev_time ();	952	ev_rt_now = ev_time ();
906	mn_now = get_clock ();	953	mn_now = get_clock ();
907	now_floor = mn_now;	954	now_floor = mn_now;
908	rtmn_diff = ev_rt_now - mn_now;	955	rtmn_diff = ev_rt_now - mn_now;
909		956
		957	/* pid check not overridable via env */
		958	#ifndef _WIN32
		959	if (flags & EVFLAG_FORKCHECK)
		960	curpid = getpid ();
		961	#endif
		962
910	if (!(flags & EVFLAG_NOENV)	963	if (!(flags & EVFLAG_NOENV)
911	&& !enable_secure ()	964	&& !enable_secure ()
912	&& getenv ("LIBEV_FLAGS"))	965	&& getenv ("LIBEV_FLAGS"))
913	flags = atoi (getenv ("LIBEV_FLAGS"));	966	flags = atoi (getenv ("LIBEV_FLAGS"));
914		967
…		…
970	#if EV_USE_SELECT	1023	#if EV_USE_SELECT
971	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1024	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
972	#endif	1025	#endif
973		1026
974	for (i = NUMPRI; i--; )	1027	for (i = NUMPRI; i--; )
		1028	{
975	array_free (pending, [i]);	1029	array_free (pending, [i]);
		1030	#if EV_IDLE_ENABLE
		1031	array_free (idle, [i]);
		1032	#endif
		1033	}
976		1034
977	/* have to use the microsoft-never-gets-it-right macro */	1035	/* have to use the microsoft-never-gets-it-right macro */
978	array_free (fdchange, EMPTY0);	1036	array_free (fdchange, EMPTY);
979	array_free (timer, EMPTY0);	1037	array_free (timer, EMPTY);
980	#if EV_PERIODIC_ENABLE	1038	#if EV_PERIODIC_ENABLE
981	array_free (periodic, EMPTY0);	1039	array_free (periodic, EMPTY);
982	#endif	1040	#endif
983	array_free (idle, EMPTY0);
984	array_free (prepare, EMPTY0);	1041	array_free (prepare, EMPTY);
985	array_free (check, EMPTY0);	1042	array_free (check, EMPTY);
986		1043
987	backend = 0;	1044	backend = 0;
988	}	1045	}
		1046
		1047	void inline_size infy_fork (EV_P);
989		1048
990	void inline_size	1049	void inline_size
991	loop_fork (EV_P)	1050	loop_fork (EV_P)
992	{	1051	{
993	#if EV_USE_PORT	1052	#if EV_USE_PORT
…		…
996	#if EV_USE_KQUEUE	1055	#if EV_USE_KQUEUE
997	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1056	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
998	#endif	1057	#endif
999	#if EV_USE_EPOLL	1058	#if EV_USE_EPOLL
1000	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1059	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1060	#endif
		1061	#if EV_USE_INOTIFY
		1062	infy_fork (EV_A);
1001	#endif	1063	#endif
1002		1064
1003	if (ev_is_active (&sigev))	1065	if (ev_is_active (&sigev))
1004	{	1066	{
1005	/* default loop */	1067	/* default loop */
…		…
1121	postfork = 1;	1183	postfork = 1;
1122	}	1184	}
1123		1185
1124	/*****************************************************************************/	1186	/*****************************************************************************/
1125		1187
1126	int inline_size	1188	void
1127	any_pending (EV_P)	1189	ev_invoke (EV_P_ void *w, int revents)
1128	{	1190	{
1129	int pri;	1191	EV_CB_INVOKE ((W)w, revents);
1130
1131	for (pri = NUMPRI; pri--; )
1132	if (pendingcnt [pri])
1133	return 1;
1134
1135	return 0;
1136	}	1192	}
1137		1193
1138	void inline_speed	1194	void inline_speed
1139	call_pending (EV_P)	1195	call_pending (EV_P)
1140	{	1196	{
…		…
1158	void inline_size	1214	void inline_size
1159	timers_reify (EV_P)	1215	timers_reify (EV_P)
1160	{	1216	{
1161	while (timercnt && ((WT)timers [0])->at <= mn_now)	1217	while (timercnt && ((WT)timers [0])->at <= mn_now)
1162	{	1218	{
1163	ev_timer *w = timers [0];	1219	ev_timer w = (ev_timer )timers [0];
1164		1220
1165	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/	1221	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1166		1222
1167	/* first reschedule or stop timer */	1223	/* first reschedule or stop timer */
1168	if (w->repeat)	1224	if (w->repeat)
…		…
1171		1227
1172	((WT)w)->at += w->repeat;	1228	((WT)w)->at += w->repeat;
1173	if (((WT)w)->at < mn_now)	1229	if (((WT)w)->at < mn_now)
1174	((WT)w)->at = mn_now;	1230	((WT)w)->at = mn_now;
1175		1231
1176	downheap ((WT *)timers, timercnt, 0);	1232	downheap (timers, timercnt, 0);
1177	}	1233	}
1178	else	1234	else
1179	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1235	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1180		1236
1181	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1237	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1186	void inline_size	1242	void inline_size
1187	periodics_reify (EV_P)	1243	periodics_reify (EV_P)
1188	{	1244	{
1189	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1245	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1190	{	1246	{
1191	ev_periodic *w = periodics [0];	1247	ev_periodic w = (ev_periodic )periodics [0];
1192		1248
1193	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/	1249	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1194		1250
1195	/* first reschedule or stop timer */	1251	/* first reschedule or stop timer */
1196	if (w->reschedule_cb)	1252	if (w->reschedule_cb)
1197	{	1253	{
1198	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1254	((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));	1255	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1200	downheap ((WT *)periodics, periodiccnt, 0);	1256	downheap (periodics, periodiccnt, 0);
1201	}	1257	}
1202	else if (w->interval)	1258	else if (w->interval)
1203	{	1259	{
1204	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1260	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1261	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));	1262	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);	1263	downheap (periodics, periodiccnt, 0);
1207	}	1264	}
1208	else	1265	else
1209	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1266	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1210		1267
1211	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1268	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1218	int i;	1275	int i;
1219		1276
1220	/* adjust periodics after time jump */	1277	/* adjust periodics after time jump */
1221	for (i = 0; i < periodiccnt; ++i)	1278	for (i = 0; i < periodiccnt; ++i)
1222	{	1279	{
1223	ev_periodic *w = periodics [i];	1280	ev_periodic w = (ev_periodic )periodics [i];
1224		1281
1225	if (w->reschedule_cb)	1282	if (w->reschedule_cb)
1226	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1283	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1227	else if (w->interval)	1284	else if (w->interval)
1228	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1285	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1229	}	1286	}
1230		1287
1231	/* now rebuild the heap */	1288	/* now rebuild the heap */
1232	for (i = periodiccnt >> 1; i--; )	1289	for (i = periodiccnt >> 1; i--; )
1233	downheap ((WT *)periodics, periodiccnt, i);	1290	downheap (periodics, periodiccnt, i);
1234	}	1291	}
1235	#endif	1292	#endif
1236		1293
		1294	#if EV_IDLE_ENABLE
1237	int inline_size	1295	void inline_size
1238	time_update_monotonic (EV_P)	1296	idle_reify (EV_P)
1239	{	1297	{
		1298	if (expect_false (idleall))
		1299	{
		1300	int pri;
		1301
		1302	for (pri = NUMPRI; pri--; )
		1303	{
		1304	if (pendingcnt [pri])
		1305	break;
		1306
		1307	if (idlecnt [pri])
		1308	{
		1309	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1310	break;
		1311	}
		1312	}
		1313	}
		1314	}
		1315	#endif
		1316
		1317	void inline_speed
		1318	time_update (EV_P_ ev_tstamp max_block)
		1319	{
		1320	int i;
		1321
		1322	#if EV_USE_MONOTONIC
		1323	if (expect_true (have_monotonic))
		1324	{
		1325	ev_tstamp odiff = rtmn_diff;
		1326
1240	mn_now = get_clock ();	1327	mn_now = get_clock ();
1241		1328
		1329	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1330	/* interpolate in the meantime */
1242	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1331	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1243	{	1332	{
1244	ev_rt_now = rtmn_diff + mn_now;	1333	ev_rt_now = rtmn_diff + mn_now;
1245	return 0;	1334	return;
1246	}	1335	}
1247	else	1336
1248	{
1249	now_floor = mn_now;	1337	now_floor = mn_now;
1250	ev_rt_now = ev_time ();	1338	ev_rt_now = ev_time ();
1251	return 1;
1252	}
1253	}
1254		1339
1255	void inline_size	1340	/* loop a few times, before making important decisions.
1256	time_update (EV_P)	1341	* on the choice of "4": one iteration isn't enough,
1257	{	1342	* in case we get preempted during the calls to
1258	int i;	1343	* ev_time and get_clock. a second call is almost guaranteed
1259		1344	* to succeed in that case, though. and looping a few more times
1260	#if EV_USE_MONOTONIC	1345	* doesn't hurt either as we only do this on time-jumps or
1261	if (expect_true (have_monotonic))	1346	* in the unlikely event of having been preempted here.
1262	{	1347	*/
1263	if (time_update_monotonic (EV_A))	1348	for (i = 4; --i; )
1264	{	1349	{
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;	1350	rtmn_diff = ev_rt_now - mn_now;
1278		1351
1279	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1352	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1280	return; /* all is well */	1353	return; /* all is well */
1281		1354
1282	ev_rt_now = ev_time ();	1355	ev_rt_now = ev_time ();
1283	mn_now = get_clock ();	1356	mn_now = get_clock ();
1284	now_floor = mn_now;	1357	now_floor = mn_now;
1285	}	1358	}
1286		1359
1287	# if EV_PERIODIC_ENABLE	1360	# if EV_PERIODIC_ENABLE
1288	periodics_reschedule (EV_A);	1361	periodics_reschedule (EV_A);
1289	# endif	1362	# endif
1290	/* no timer adjustment, as the monotonic clock doesn't jump */	1363	/* no timer adjustment, as the monotonic clock doesn't jump */
1291	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1364	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1292	}
1293	}	1365	}
1294	else	1366	else
1295	#endif	1367	#endif
1296	{	1368	{
1297	ev_rt_now = ev_time ();	1369	ev_rt_now = ev_time ();
1298		1370
1299	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1371	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1300	{	1372	{
1301	#if EV_PERIODIC_ENABLE	1373	#if EV_PERIODIC_ENABLE
1302	periodics_reschedule (EV_A);	1374	periodics_reschedule (EV_A);
1303	#endif	1375	#endif
1304
1305	/* adjust timers. this is easy, as the offset is the same for all */	1376	/* adjust timers. this is easy, as the offset is the same for all of them */
1306	for (i = 0; i < timercnt; ++i)	1377	for (i = 0; i < timercnt; ++i)
1307	((WT)timers [i])->at += ev_rt_now - mn_now;	1378	((WT)timers [i])->at += ev_rt_now - mn_now;
1308	}	1379	}
1309		1380
1310	mn_now = ev_rt_now;	1381	mn_now = ev_rt_now;
…		…
1330	{	1401	{
1331	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1402	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1332	? EVUNLOOP_ONE	1403	? EVUNLOOP_ONE
1333	: EVUNLOOP_CANCEL;	1404	: EVUNLOOP_CANCEL;
1334		1405
1335	while (activecnt)	1406	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1407
		1408	do
1336	{	1409	{
1337	/* we might have forked, so reify kernel state if necessary */	1410	#ifndef _WIN32
		1411	if (expect_false (curpid)) /* penalise the forking check even more */
		1412	if (expect_false (getpid () != curpid))
		1413	{
		1414	curpid = getpid ();
		1415	postfork = 1;
		1416	}
		1417	#endif
		1418
1338	#if EV_FORK_ENABLE	1419	#if EV_FORK_ENABLE
		1420	/* we might have forked, so queue fork handlers */
1339	if (expect_false (postfork))	1421	if (expect_false (postfork))
1340	if (forkcnt)	1422	if (forkcnt)
1341	{	1423	{
1342	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1424	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1343	call_pending (EV_A);	1425	call_pending (EV_A);
1344	}	1426	}
1345	#endif	1427	#endif
1346		1428
1347	/* queue check watchers (and execute them) */	1429	/* queue prepare watchers (and execute them) */
1348	if (expect_false (preparecnt))	1430	if (expect_false (preparecnt))
1349	{	1431	{
1350	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1432	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1351	call_pending (EV_A);	1433	call_pending (EV_A);
1352	}	1434	}
1353		1435
		1436	if (expect_false (!activecnt))
		1437	break;
		1438
1354	/* we might have forked, so reify kernel state if necessary */	1439	/* we might have forked, so reify kernel state if necessary */
1355	if (expect_false (postfork))	1440	if (expect_false (postfork))
1356	loop_fork (EV_A);	1441	loop_fork (EV_A);
1357		1442
1358	/* update fd-related kernel structures */	1443	/* update fd-related kernel structures */
1359	fd_reify (EV_A);	1444	fd_reify (EV_A);
1360		1445
1361	/* calculate blocking time */	1446	/* calculate blocking time */
1362	{	1447	{
1363	double block;	1448	ev_tstamp block;
1364		1449
1365	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1450	if (expect_false (flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt))
1366	block = 0.; /* do not block at all */	1451	block = 0.; /* do not block at all */
1367	else	1452	else
1368	{	1453	{
1369	/* update time to cancel out callback processing overhead */	1454	/* 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);	1455	time_update (EV_A_ 1e100);
1373	else
1374	#endif
1375	{
1376	ev_rt_now = ev_time ();
1377	mn_now = ev_rt_now;
1378	}
1379		1456
1380	block = MAX_BLOCKTIME;	1457	block = MAX_BLOCKTIME;
1381		1458
1382	if (timercnt)	1459	if (timercnt)
1383	{	1460	{
…		…
1394	#endif	1471	#endif
1395		1472
1396	if (expect_false (block < 0.)) block = 0.;	1473	if (expect_false (block < 0.)) block = 0.;
1397	}	1474	}
1398		1475
		1476	++loop_count;
1399	backend_poll (EV_A_ block);	1477	backend_poll (EV_A_ block);
		1478
		1479	/* update ev_rt_now, do magic */
		1480	time_update (EV_A_ block);
1400	}	1481	}
1401
1402	/* update ev_rt_now, do magic */
1403	time_update (EV_A);
1404		1482
1405	/* queue pending timers and reschedule them */	1483	/* queue pending timers and reschedule them */
1406	timers_reify (EV_A); /* relative timers called last */	1484	timers_reify (EV_A); /* relative timers called last */
1407	#if EV_PERIODIC_ENABLE	1485	#if EV_PERIODIC_ENABLE
1408	periodics_reify (EV_A); /* absolute timers called first */	1486	periodics_reify (EV_A); /* absolute timers called first */
1409	#endif	1487	#endif
1410		1488
		1489	#if EV_IDLE_ENABLE
1411	/* queue idle watchers unless other events are pending */	1490	/* queue idle watchers unless other events are pending */
1412	if (idlecnt && !any_pending (EV_A))	1491	idle_reify (EV_A);
1413	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1492	#endif
1414		1493
1415	/* queue check watchers, to be executed first */	1494	/* queue check watchers, to be executed first */
1416	if (expect_false (checkcnt))	1495	if (expect_false (checkcnt))
1417	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1496	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1418		1497
1419	call_pending (EV_A);	1498	call_pending (EV_A);
1420		1499
1421	if (expect_false (loop_done))
1422	break;
1423	}	1500	}
		1501	while (expect_true (activecnt && !loop_done));
1424		1502
1425	if (loop_done == EVUNLOOP_ONE)	1503	if (loop_done == EVUNLOOP_ONE)
1426	loop_done = EVUNLOOP_CANCEL;	1504	loop_done = EVUNLOOP_CANCEL;
1427	}	1505	}
1428		1506
…		…
1455	head = &(*head)->next;	1533	head = &(*head)->next;
1456	}	1534	}
1457	}	1535	}
1458		1536
1459	void inline_speed	1537	void inline_speed
1460	ev_clear_pending (EV_P_ W w)	1538	clear_pending (EV_P_ W w)
1461	{	1539	{
1462	if (w->pending)	1540	if (w->pending)
1463	{	1541	{
1464	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1542	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1465	w->pending = 0;	1543	w->pending = 0;
1466	}	1544	}
1467	}	1545	}
1468		1546
		1547	int
		1548	ev_clear_pending (EV_P_ void *w)
		1549	{
		1550	W w_ = (W)w;
		1551	int pending = w_->pending;
		1552
		1553	if (expect_true (pending))
		1554	{
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	w_->pending = 0;
		1557	p->w = 0;
		1558	return p->events;
		1559	}
		1560	else
		1561	return 0;
		1562	}
		1563
		1564	void inline_size
		1565	pri_adjust (EV_P_ W w)
		1566	{
		1567	int pri = w->priority;
		1568	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1569	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1570	w->priority = pri;
		1571	}
		1572
1469	void inline_speed	1573	void inline_speed
1470	ev_start (EV_P_ W w, int active)	1574	ev_start (EV_P_ W w, int active)
1471	{	1575	{
1472	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1576	pri_adjust (EV_A_ w);
1473	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1474
1475	w->active = active;	1577	w->active = active;
1476	ev_ref (EV_A);	1578	ev_ref (EV_A);
1477	}	1579	}
1478		1580
1479	void inline_size	1581	void inline_size
…		…
1483	w->active = 0;	1585	w->active = 0;
1484	}	1586	}
1485		1587
1486	/*****************************************************************************/	1588	/*****************************************************************************/
1487		1589
1488	void	1590	void noinline
1489	ev_io_start (EV_P_ ev_io *w)	1591	ev_io_start (EV_P_ ev_io *w)
1490	{	1592	{
1491	int fd = w->fd;	1593	int fd = w->fd;
1492		1594
1493	if (expect_false (ev_is_active (w)))	1595	if (expect_false (ev_is_active (w)))
…		…
1495		1597
1496	assert (("ev_io_start called with negative fd", fd >= 0));	1598	assert (("ev_io_start called with negative fd", fd >= 0));
1497		1599
1498	ev_start (EV_A_ (W)w, 1);	1600	ev_start (EV_A_ (W)w, 1);
1499	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1601	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1500	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1602	wlist_add (&anfds[fd].head, (WL)w);
1501		1603
1502	fd_change (EV_A_ fd);	1604	fd_change (EV_A_ fd);
1503	}	1605	}
1504		1606
1505	void	1607	void noinline
1506	ev_io_stop (EV_P_ ev_io *w)	1608	ev_io_stop (EV_P_ ev_io *w)
1507	{	1609	{
1508	ev_clear_pending (EV_A_ (W)w);	1610	clear_pending (EV_A_ (W)w);
1509	if (expect_false (!ev_is_active (w)))	1611	if (expect_false (!ev_is_active (w)))
1510	return;	1612	return;
1511		1613
1512	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1614	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1513		1615
1514	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1616	wlist_del (&anfds[w->fd].head, (WL)w);
1515	ev_stop (EV_A_ (W)w);	1617	ev_stop (EV_A_ (W)w);
1516		1618
1517	fd_change (EV_A_ w->fd);	1619	fd_change (EV_A_ w->fd);
1518	}	1620	}
1519		1621
1520	void	1622	void noinline
1521	ev_timer_start (EV_P_ ev_timer *w)	1623	ev_timer_start (EV_P_ ev_timer *w)
1522	{	1624	{
1523	if (expect_false (ev_is_active (w)))	1625	if (expect_false (ev_is_active (w)))
1524	return;	1626	return;
1525		1627
1526	((WT)w)->at += mn_now;	1628	((WT)w)->at += mn_now;
1527		1629
1528	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1630	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1529		1631
1530	ev_start (EV_A_ (W)w, ++timercnt);	1632	ev_start (EV_A_ (W)w, ++timercnt);
1531	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1633	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1532	timers [timercnt - 1] = w;	1634	timers [timercnt - 1] = (WT)w;
1533	upheap ((WT *)timers, timercnt - 1);	1635	upheap (timers, timercnt - 1);
1534		1636
1535	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/	1637	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1536	}	1638	}
1537		1639
1538	void	1640	void noinline
1539	ev_timer_stop (EV_P_ ev_timer *w)	1641	ev_timer_stop (EV_P_ ev_timer *w)
1540	{	1642	{
1541	ev_clear_pending (EV_A_ (W)w);	1643	clear_pending (EV_A_ (W)w);
1542	if (expect_false (!ev_is_active (w)))	1644	if (expect_false (!ev_is_active (w)))
1543	return;	1645	return;
1544		1646
1545	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1647	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1546		1648
1547	{	1649	{
1548	int active = ((W)w)->active;	1650	int active = ((W)w)->active;
1549		1651
1550	if (expect_true (--active < --timercnt))	1652	if (expect_true (--active < --timercnt))
1551	{	1653	{
1552	timers [active] = timers [timercnt];	1654	timers [active] = timers [timercnt];
1553	adjustheap ((WT *)timers, timercnt, active);	1655	adjustheap (timers, timercnt, active);
1554	}	1656	}
1555	}	1657	}
1556		1658
1557	((WT)w)->at -= mn_now;	1659	((WT)w)->at -= mn_now;
1558		1660
1559	ev_stop (EV_A_ (W)w);	1661	ev_stop (EV_A_ (W)w);
1560	}	1662	}
1561		1663
1562	void	1664	void noinline
1563	ev_timer_again (EV_P_ ev_timer *w)	1665	ev_timer_again (EV_P_ ev_timer *w)
1564	{	1666	{
1565	if (ev_is_active (w))	1667	if (ev_is_active (w))
1566	{	1668	{
1567	if (w->repeat)	1669	if (w->repeat)
1568	{	1670	{
1569	((WT)w)->at = mn_now + w->repeat;	1671	((WT)w)->at = mn_now + w->repeat;
1570	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1672	adjustheap (timers, timercnt, ((W)w)->active - 1);
1571	}	1673	}
1572	else	1674	else
1573	ev_timer_stop (EV_A_ w);	1675	ev_timer_stop (EV_A_ w);
1574	}	1676	}
1575	else if (w->repeat)	1677	else if (w->repeat)
…		…
1578	ev_timer_start (EV_A_ w);	1680	ev_timer_start (EV_A_ w);
1579	}	1681	}
1580	}	1682	}
1581		1683
1582	#if EV_PERIODIC_ENABLE	1684	#if EV_PERIODIC_ENABLE
1583	void	1685	void noinline
1584	ev_periodic_start (EV_P_ ev_periodic *w)	1686	ev_periodic_start (EV_P_ ev_periodic *w)
1585	{	1687	{
1586	if (expect_false (ev_is_active (w)))	1688	if (expect_false (ev_is_active (w)))
1587	return;	1689	return;
1588		1690
…		…
1590	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1692	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1591	else if (w->interval)	1693	else if (w->interval)
1592	{	1694	{
1593	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1695	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 */	1696	/* 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;	1697	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1596	}	1698	}
		1699	else
		1700	((WT)w)->at = w->offset;
1597		1701
1598	ev_start (EV_A_ (W)w, ++periodiccnt);	1702	ev_start (EV_A_ (W)w, ++periodiccnt);
1599	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1703	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1600	periodics [periodiccnt - 1] = w;	1704	periodics [periodiccnt - 1] = (WT)w;
1601	upheap ((WT *)periodics, periodiccnt - 1);	1705	upheap (periodics, periodiccnt - 1);
1602		1706
1603	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/	1707	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1604	}	1708	}
1605		1709
1606	void	1710	void noinline
1607	ev_periodic_stop (EV_P_ ev_periodic *w)	1711	ev_periodic_stop (EV_P_ ev_periodic *w)
1608	{	1712	{
1609	ev_clear_pending (EV_A_ (W)w);	1713	clear_pending (EV_A_ (W)w);
1610	if (expect_false (!ev_is_active (w)))	1714	if (expect_false (!ev_is_active (w)))
1611	return;	1715	return;
1612		1716
1613	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1717	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1614		1718
1615	{	1719	{
1616	int active = ((W)w)->active;	1720	int active = ((W)w)->active;
1617		1721
1618	if (expect_true (--active < --periodiccnt))	1722	if (expect_true (--active < --periodiccnt))
1619	{	1723	{
1620	periodics [active] = periodics [periodiccnt];	1724	periodics [active] = periodics [periodiccnt];
1621	adjustheap ((WT *)periodics, periodiccnt, active);	1725	adjustheap (periodics, periodiccnt, active);
1622	}	1726	}
1623	}	1727	}
1624		1728
1625	ev_stop (EV_A_ (W)w);	1729	ev_stop (EV_A_ (W)w);
1626	}	1730	}
1627		1731
1628	void	1732	void noinline
1629	ev_periodic_again (EV_P_ ev_periodic *w)	1733	ev_periodic_again (EV_P_ ev_periodic *w)
1630	{	1734	{
1631	/* TODO: use adjustheap and recalculation */	1735	/* TODO: use adjustheap and recalculation */
1632	ev_periodic_stop (EV_A_ w);	1736	ev_periodic_stop (EV_A_ w);
1633	ev_periodic_start (EV_A_ w);	1737	ev_periodic_start (EV_A_ w);
…		…
1636		1740
1637	#ifndef SA_RESTART	1741	#ifndef SA_RESTART
1638	# define SA_RESTART 0	1742	# define SA_RESTART 0
1639	#endif	1743	#endif
1640		1744
1641	void	1745	void noinline
1642	ev_signal_start (EV_P_ ev_signal *w)	1746	ev_signal_start (EV_P_ ev_signal *w)
1643	{	1747	{
1644	#if EV_MULTIPLICITY	1748	#if EV_MULTIPLICITY
1645	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1749	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1646	#endif	1750	#endif
1647	if (expect_false (ev_is_active (w)))	1751	if (expect_false (ev_is_active (w)))
1648	return;	1752	return;
1649		1753
1650	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1754	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1651		1755
		1756	{
		1757	#ifndef _WIN32
		1758	sigset_t full, prev;
		1759	sigfillset (&full);
		1760	sigprocmask (SIG_SETMASK, &full, &prev);
		1761	#endif
		1762
		1763	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1764
		1765	#ifndef _WIN32
		1766	sigprocmask (SIG_SETMASK, &prev, 0);
		1767	#endif
		1768	}
		1769
1652	ev_start (EV_A_ (W)w, 1);	1770	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);	1771	wlist_add (&signals [w->signum - 1].head, (WL)w);
1655		1772
1656	if (!((WL)w)->next)	1773	if (!((WL)w)->next)
1657	{	1774	{
1658	#if _WIN32	1775	#if _WIN32
1659	signal (w->signum, sighandler);	1776	signal (w->signum, sighandler);
…		…
1665	sigaction (w->signum, &sa, 0);	1782	sigaction (w->signum, &sa, 0);
1666	#endif	1783	#endif
1667	}	1784	}
1668	}	1785	}
1669		1786
1670	void	1787	void noinline
1671	ev_signal_stop (EV_P_ ev_signal *w)	1788	ev_signal_stop (EV_P_ ev_signal *w)
1672	{	1789	{
1673	ev_clear_pending (EV_A_ (W)w);	1790	clear_pending (EV_A_ (W)w);
1674	if (expect_false (!ev_is_active (w)))	1791	if (expect_false (!ev_is_active (w)))
1675	return;	1792	return;
1676		1793
1677	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1794	wlist_del (&signals [w->signum - 1].head, (WL)w);
1678	ev_stop (EV_A_ (W)w);	1795	ev_stop (EV_A_ (W)w);
1679		1796
1680	if (!signals [w->signum - 1].head)	1797	if (!signals [w->signum - 1].head)
1681	signal (w->signum, SIG_DFL);	1798	signal (w->signum, SIG_DFL);
1682	}	1799	}
…		…
1689	#endif	1806	#endif
1690	if (expect_false (ev_is_active (w)))	1807	if (expect_false (ev_is_active (w)))
1691	return;	1808	return;
1692		1809
1693	ev_start (EV_A_ (W)w, 1);	1810	ev_start (EV_A_ (W)w, 1);
1694	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1811	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1695	}	1812	}
1696		1813
1697	void	1814	void
1698	ev_child_stop (EV_P_ ev_child *w)	1815	ev_child_stop (EV_P_ ev_child *w)
1699	{	1816	{
1700	ev_clear_pending (EV_A_ (W)w);	1817	clear_pending (EV_A_ (W)w);
1701	if (expect_false (!ev_is_active (w)))	1818	if (expect_false (!ev_is_active (w)))
1702	return;	1819	return;
1703		1820
1704	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1821	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1705	ev_stop (EV_A_ (W)w);	1822	ev_stop (EV_A_ (W)w);
1706	}	1823	}
1707		1824
1708	#if EV_STAT_ENABLE	1825	#if EV_STAT_ENABLE
1709		1826
…		…
1713	# endif	1830	# endif
1714		1831
1715	#define DEF_STAT_INTERVAL 5.0074891	1832	#define DEF_STAT_INTERVAL 5.0074891
1716	#define MIN_STAT_INTERVAL 0.1074891	1833	#define MIN_STAT_INTERVAL 0.1074891
1717		1834
1718	void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	1835	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1719		1836
1720	#if EV_USE_INOTIFY	1837	#if EV_USE_INOTIFY
1721	# define EV_INOTIFY_BUFSIZE 8192	1838	# define EV_INOTIFY_BUFSIZE 8192
1722		1839
1723	static void noinline	1840	static void noinline
…		…
1831	ev_set_priority (&fs_w, EV_MAXPRI);	1948	ev_set_priority (&fs_w, EV_MAXPRI);
1832	ev_io_start (EV_A_ &fs_w);	1949	ev_io_start (EV_A_ &fs_w);
1833	}	1950	}
1834	}	1951	}
1835		1952
		1953	void inline_size
		1954	infy_fork (EV_P)
		1955	{
		1956	int slot;
		1957
		1958	if (fs_fd < 0)
		1959	return;
		1960
		1961	close (fs_fd);
		1962	fs_fd = inotify_init ();
		1963
		1964	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1965	{
		1966	WL w_ = fs_hash [slot].head;
		1967	fs_hash [slot].head = 0;
		1968
		1969	while (w_)
		1970	{
		1971	ev_stat w = (ev_stat )w_;
		1972	w_ = w_->next; /* lets us add this watcher */
		1973
		1974	w->wd = -1;
		1975
		1976	if (fs_fd >= 0)
		1977	infy_add (EV_A_ w); /* re-add, no matter what */
		1978	else
		1979	ev_timer_start (EV_A_ &w->timer);
		1980	}
		1981
		1982	}
		1983	}
		1984
1836	#endif	1985	#endif
1837		1986
1838	void	1987	void
1839	ev_stat_stat (EV_P_ ev_stat *w)	1988	ev_stat_stat (EV_P_ ev_stat *w)
1840	{	1989	{
…		…
1842	w->attr.st_nlink = 0;	1991	w->attr.st_nlink = 0;
1843	else if (!w->attr.st_nlink)	1992	else if (!w->attr.st_nlink)
1844	w->attr.st_nlink = 1;	1993	w->attr.st_nlink = 1;
1845	}	1994	}
1846		1995
1847	void noinline	1996	static void noinline
1848	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	1997	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1849	{	1998	{
1850	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	1999	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1851		2000
1852	/* we copy this here each the time so that */	2001	/* we copy this here each the time so that */
1853	/* prev has the old value when the callback gets invoked */	2002	/* prev has the old value when the callback gets invoked */
1854	w->prev = w->attr;	2003	w->prev = w->attr;
1855	ev_stat_stat (EV_A_ w);	2004	ev_stat_stat (EV_A_ w);
1856		2005
1857	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2006	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2007	if (
		2008	w->prev.st_dev != w->attr.st_dev
		2009	\|\| w->prev.st_ino != w->attr.st_ino
		2010	\|\| w->prev.st_mode != w->attr.st_mode
		2011	\|\| w->prev.st_nlink != w->attr.st_nlink
		2012	\|\| w->prev.st_uid != w->attr.st_uid
		2013	\|\| w->prev.st_gid != w->attr.st_gid
		2014	\|\| w->prev.st_rdev != w->attr.st_rdev
		2015	\|\| w->prev.st_size != w->attr.st_size
		2016	\|\| w->prev.st_atime != w->attr.st_atime
		2017	\|\| w->prev.st_mtime != w->attr.st_mtime
		2018	\|\| w->prev.st_ctime != w->attr.st_ctime
1858	{	2019	) {
1859	#if EV_USE_INOTIFY	2020	#if EV_USE_INOTIFY
1860	infy_del (EV_A_ w);	2021	infy_del (EV_A_ w);
1861	infy_add (EV_A_ w);	2022	infy_add (EV_A_ w);
1862	ev_stat_stat (EV_A_ w); /* avoid race... */	2023	ev_stat_stat (EV_A_ w); /* avoid race... */
1863	#endif	2024	#endif
…		…
1897	}	2058	}
1898		2059
1899	void	2060	void
1900	ev_stat_stop (EV_P_ ev_stat *w)	2061	ev_stat_stop (EV_P_ ev_stat *w)
1901	{	2062	{
1902	ev_clear_pending (EV_A_ (W)w);	2063	clear_pending (EV_A_ (W)w);
1903	if (expect_false (!ev_is_active (w)))	2064	if (expect_false (!ev_is_active (w)))
1904	return;	2065	return;
1905		2066
1906	#if EV_USE_INOTIFY	2067	#if EV_USE_INOTIFY
1907	infy_del (EV_A_ w);	2068	infy_del (EV_A_ w);
…		…
1910		2071
1911	ev_stop (EV_A_ (W)w);	2072	ev_stop (EV_A_ (W)w);
1912	}	2073	}
1913	#endif	2074	#endif
1914		2075
		2076	#if EV_IDLE_ENABLE
1915	void	2077	void
1916	ev_idle_start (EV_P_ ev_idle *w)	2078	ev_idle_start (EV_P_ ev_idle *w)
1917	{	2079	{
1918	if (expect_false (ev_is_active (w)))	2080	if (expect_false (ev_is_active (w)))
1919	return;	2081	return;
1920		2082
		2083	pri_adjust (EV_A_ (W)w);
		2084
		2085	{
		2086	int active = ++idlecnt [ABSPRI (w)];
		2087
		2088	++idleall;
1921	ev_start (EV_A_ (W)w, ++idlecnt);	2089	ev_start (EV_A_ (W)w, active);
		2090
1922	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2091	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1923	idles [idlecnt - 1] = w;	2092	idles [ABSPRI (w)][active - 1] = w;
		2093	}
1924	}	2094	}
1925		2095
1926	void	2096	void
1927	ev_idle_stop (EV_P_ ev_idle *w)	2097	ev_idle_stop (EV_P_ ev_idle *w)
1928	{	2098	{
1929	ev_clear_pending (EV_A_ (W)w);	2099	clear_pending (EV_A_ (W)w);
1930	if (expect_false (!ev_is_active (w)))	2100	if (expect_false (!ev_is_active (w)))
1931	return;	2101	return;
1932		2102
1933	{	2103	{
1934	int active = ((W)w)->active;	2104	int active = ((W)w)->active;
1935	idles [active - 1] = idles [--idlecnt];	2105
		2106	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1936	((W)idles [active - 1])->active = active;	2107	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2108
		2109	ev_stop (EV_A_ (W)w);
		2110	--idleall;
1937	}	2111	}
1938
1939	ev_stop (EV_A_ (W)w);
1940	}	2112	}
		2113	#endif
1941		2114
1942	void	2115	void
1943	ev_prepare_start (EV_P_ ev_prepare *w)	2116	ev_prepare_start (EV_P_ ev_prepare *w)
1944	{	2117	{
1945	if (expect_false (ev_is_active (w)))	2118	if (expect_false (ev_is_active (w)))
…		…
1951	}	2124	}
1952		2125
1953	void	2126	void
1954	ev_prepare_stop (EV_P_ ev_prepare *w)	2127	ev_prepare_stop (EV_P_ ev_prepare *w)
1955	{	2128	{
1956	ev_clear_pending (EV_A_ (W)w);	2129	clear_pending (EV_A_ (W)w);
1957	if (expect_false (!ev_is_active (w)))	2130	if (expect_false (!ev_is_active (w)))
1958	return;	2131	return;
1959		2132
1960	{	2133	{
1961	int active = ((W)w)->active;	2134	int active = ((W)w)->active;
…		…
1978	}	2151	}
1979		2152
1980	void	2153	void
1981	ev_check_stop (EV_P_ ev_check *w)	2154	ev_check_stop (EV_P_ ev_check *w)
1982	{	2155	{
1983	ev_clear_pending (EV_A_ (W)w);	2156	clear_pending (EV_A_ (W)w);
1984	if (expect_false (!ev_is_active (w)))	2157	if (expect_false (!ev_is_active (w)))
1985	return;	2158	return;
1986		2159
1987	{	2160	{
1988	int active = ((W)w)->active;	2161	int active = ((W)w)->active;
…		…
2030	}	2203	}
2031		2204
2032	void	2205	void
2033	ev_embed_stop (EV_P_ ev_embed *w)	2206	ev_embed_stop (EV_P_ ev_embed *w)
2034	{	2207	{
2035	ev_clear_pending (EV_A_ (W)w);	2208	clear_pending (EV_A_ (W)w);
2036	if (expect_false (!ev_is_active (w)))	2209	if (expect_false (!ev_is_active (w)))
2037	return;	2210	return;
2038		2211
2039	ev_io_stop (EV_A_ &w->io);	2212	ev_io_stop (EV_A_ &w->io);
2040		2213
…		…
2055	}	2228	}
2056		2229
2057	void	2230	void
2058	ev_fork_stop (EV_P_ ev_fork *w)	2231	ev_fork_stop (EV_P_ ev_fork *w)
2059	{	2232	{
2060	ev_clear_pending (EV_A_ (W)w);	2233	clear_pending (EV_A_ (W)w);
2061	if (expect_false (!ev_is_active (w)))	2234	if (expect_false (!ev_is_active (w)))
2062	return;	2235	return;
2063		2236
2064	{	2237	{
2065	int active = ((W)w)->active;	2238	int active = ((W)w)->active;

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Comparing libev/ev.c (file contents): Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs. Revision 1.182 by root, Wed Dec 12 01:27:08 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.153 by root, Wed Nov 28 11:41:18 2007 UTC vs.
Revision 1.182 by root, Wed Dec 12 01:27:08 2007 UTC