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Comparing libev/ev.c (file contents):
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC vs.
Revision 1.193 by root, Sat Dec 22 05:47:58 2007 UTC

…		…
51	# ifndef EV_USE_MONOTONIC	51	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	52	# define EV_USE_MONOTONIC 0
53	# endif	53	# endif
54	# ifndef EV_USE_REALTIME	54	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
		61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
56	# endif	64	# endif
57	# endif	65	# endif
58		66
59	# ifndef EV_USE_SELECT	67	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
94	# else	102	# else
95	# define EV_USE_PORT 0	103	# define EV_USE_PORT 0
96	# endif	104	# endif
97	# endif	105	# endif
98		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
		113	# endif
		114
99	#endif	115	#endif
100		116
101	#include <math.h>	117	#include <math.h>
102	#include <stdlib.h>	118	#include <stdlib.h>
103	#include <fcntl.h>	119	#include <fcntl.h>
…		…
109	#include <errno.h>	125	#include <errno.h>
110	#include <sys/types.h>	126	#include <sys/types.h>
111	#include <time.h>	127	#include <time.h>
112		128
113	#include <signal.h>	129	#include <signal.h>
		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
114		136
115	#ifndef _WIN32	137	#ifndef _WIN32
116	# include <sys/time.h>	138	# include <sys/time.h>
117	# include <sys/wait.h>	139	# include <sys/wait.h>
118	# include <unistd.h>	140	# include <unistd.h>
…		…
132		154
133	#ifndef EV_USE_REALTIME	155	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	156	# define EV_USE_REALTIME 0
135	#endif	157	#endif
136		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
		161	#endif
		162
137	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
139	#endif	165	#endif
140		166
141	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
…		…
156		182
157	#ifndef EV_USE_PORT	183	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	184	# define EV_USE_PORT 0
159	#endif	185	#endif
160		186
		187	#ifndef EV_USE_INOTIFY
		188	# define EV_USE_INOTIFY 0
		189	#endif
		190
161	#ifndef EV_PID_HASHSIZE	191	#ifndef EV_PID_HASHSIZE
162	# if EV_MINIMAL	192	# if EV_MINIMAL
163	# define EV_PID_HASHSIZE 1	193	# define EV_PID_HASHSIZE 1
164	# else	194	# else
165	# define EV_PID_HASHSIZE 16	195	# define EV_PID_HASHSIZE 16
166	# endif	196	# endif
167	#endif	197	#endif
168		198
		199	#ifndef EV_INOTIFY_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
		205	#endif
		206
169	/**/	207	/**/
170		208
171	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
172	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
173	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
…		…
176	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
177	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
179	#endif	217	#endif
180		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
181	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
182	# include <winsock.h>	235	# include <winsock.h>
183	#endif	236	#endif
184		237
185	/**/	238	/**/
186		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
187	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
188	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
189	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
190		253
191	#ifdef EV_H
192	# include EV_H
193	#else
194	# include "ev.h"
195	#endif
196
197	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
198	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
199	# define inline_size static inline /* inline for codesize */
200	# if EV_MINIMAL
201	# define noinline __attribute__ ((noinline))	256	# define noinline __attribute__ ((noinline))
202	# define inline_speed static noinline
203	# else
204	# define noinline
205	# define inline_speed static inline
206	# endif
207	#else	257	#else
208	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
209	# define inline_speed static
210	# define inline_size static
211	# define noinline	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
212	#endif	263	#endif
213		264
214	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
215	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
216		274
217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219		277
220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
221	#define EMPTY2(a,b) /* used to suppress some warnings */	279	#define EMPTY2(a,b) /* used to suppress some warnings */
222		280
223	typedef ev_watcher *W;	281	typedef ev_watcher *W;
224	typedef ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
225	typedef ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
…		…
253	perror (msg);	311	perror (msg);
254	abort ();	312	abort ();
255	}	313	}
256	}	314	}
257		315
258	static void *(*alloc)(void *ptr, size_t size) = realloc;	316	static void *(*alloc)(void *ptr, long size);
259		317
260	void	318	void
261	ev_set_allocator (void *(*cb)(void *ptr, size_t size))	319	ev_set_allocator (void *(*cb)(void *ptr, long size))
262	{	320	{
263	alloc = cb;	321	alloc = cb;
264	}	322	}
265		323
266	inline_speed void *	324	inline_speed void *
267	ev_realloc (void *ptr, size_t size)	325	ev_realloc (void *ptr, long size)
268	{	326	{
269	ptr = alloc (ptr, size);	327	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
270		328
271	if (!ptr && size)	329	if (!ptr && size)
272	{	330	{
273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);	331	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274	abort ();	332	abort ();
275	}	333	}
276		334
277	return ptr;	335	return ptr;
278	}	336	}
…		…
295	typedef struct	353	typedef struct
296	{	354	{
297	W w;	355	W w;
298	int events;	356	int events;
299	} ANPENDING;	357	} ANPENDING;
		358
		359	#if EV_USE_INOTIFY
		360	typedef struct
		361	{
		362	WL head;
		363	} ANFS;
		364	#endif
300		365
301	#if EV_MULTIPLICITY	366	#if EV_MULTIPLICITY
302		367
303	struct ev_loop	368	struct ev_loop
304	{	369	{
…		…
361	{	426	{
362	return ev_rt_now;	427	return ev_rt_now;
363	}	428	}
364	#endif	429	#endif
365		430
366	#define array_roundsize(type,n) (((n) | 4) & ~3)	431	void
		432	ev_sleep (ev_tstamp delay)
		433	{
		434	if (delay > 0.)
		435	{
		436	#if EV_USE_NANOSLEEP
		437	struct timespec ts;
		438
		439	ts.tv_sec = (time_t)delay;
		440	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		441
		442	nanosleep (&ts, 0);
		443	#elif defined(_WIN32)
		444	Sleep (delay * 1e3);
		445	#else
		446	struct timeval tv;
		447
		448	tv.tv_sec = (time_t)delay;
		449	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		450
		451	select (0, 0, 0, 0, &tv);
		452	#endif
		453	}
		454	}
		455
		456	/*****************************************************************************/
		457
		458	int inline_size
		459	array_nextsize (int elem, int cur, int cnt)
		460	{
		461	int ncur = cur + 1;
		462
		463	do
		464	ncur <<= 1;
		465	while (cnt > ncur);
		466
		467	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		468	if (elem * ncur > 4096)
		469	{
		470	ncur *= elem;
		471	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		472	ncur = ncur - sizeof (void *) * 4;
		473	ncur /= elem;
		474	}
		475
		476	return ncur;
		477	}
		478
		479	static noinline void *
		480	array_realloc (int elem, void *base, int *cur, int cnt)
		481	{
		482	*cur = array_nextsize (elem, *cur, cnt);
		483	return ev_realloc (base, elem * *cur);
		484	}
367		485
368	#define array_needsize(type,base,cur,cnt,init) \	486	#define array_needsize(type,base,cur,cnt,init) \
369	if (expect_false ((cnt) > cur)) \	487	if (expect_false ((cnt) > (cur))) \
370	{ \	488	{ \
371	int newcnt = cur; \	489	int ocur_ = (cur); \
372	do \	490	(base) = (type *)array_realloc \
373	{ \	491	(sizeof (type), (base), &(cur), (cnt)); \
374	newcnt = array_roundsize (type, newcnt << 1); \	492	init ((base) + (ocur_), (cur) - ocur_); \
375	} \
376	while ((cnt) > newcnt); \
377	\
378	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
379	init (base + cur, newcnt - cur); \
380	cur = newcnt; \
381	}	493	}
382		494
		495	#if 0
383	#define array_slim(type,stem) \	496	#define array_slim(type,stem) \
384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	497	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385	{ \	498	{ \
386	stem ## max = array_roundsize (stem ## cnt >> 1); \	499	stem ## max = array_roundsize (stem ## cnt >> 1); \
387	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	500	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	501	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
389	}	502	}
		503	#endif
390		504
391	#define array_free(stem, idx) \	505	#define array_free(stem, idx) \
392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	506	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
393		507
394	/*****************************************************************************/	508	/*****************************************************************************/
395		509
396	void noinline	510	void noinline
397	ev_feed_event (EV_P_ void *w, int revents)	511	ev_feed_event (EV_P_ void *w, int revents)
398	{	512	{
399	W w_ = (W)w;	513	W w_ = (W)w;
		514	int pri = ABSPRI (w_);
400		515
401	if (expect_false (w_->pending))	516	if (expect_false (w_->pending))
		517	pendings [pri][w_->pending - 1].events |= revents;
		518	else
402	{	519	{
		520	w_->pending = ++pendingcnt [pri];
		521	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		522	pendings [pri][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	523	pendings [pri][w_->pending - 1].events = revents;
404	return;
405	}	524	}
406
407	w_->pending = ++pendingcnt [ABSPRI (w_)];
408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
411	}	525	}
412		526
413	void inline_size	527	void inline_speed
414	queue_events (EV_P_ W *events, int eventcnt, int type)	528	queue_events (EV_P_ W *events, int eventcnt, int type)
415	{	529	{
416	int i;	530	int i;
417		531
418	for (i = 0; i < eventcnt; ++i)	532	for (i = 0; i < eventcnt; ++i)
…		…
450	}	564	}
451		565
452	void	566	void
453	ev_feed_fd_event (EV_P_ int fd, int revents)	567	ev_feed_fd_event (EV_P_ int fd, int revents)
454	{	568	{
		569	if (fd >= 0 && fd < anfdmax)
455	fd_event (EV_A_ fd, revents);	570	fd_event (EV_A_ fd, revents);
456	}	571	}
457		572
458	void inline_size	573	void inline_size
459	fd_reify (EV_P)	574	fd_reify (EV_P)
460	{	575	{
…		…
464	{	579	{
465	int fd = fdchanges [i];	580	int fd = fdchanges [i];
466	ANFD *anfd = anfds + fd;	581	ANFD *anfd = anfds + fd;
467	ev_io *w;	582	ev_io *w;
468		583
469	int events = 0;	584	unsigned char events = 0;
470		585
471	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	586	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
472	events |= w->events;	587	events |= (unsigned char)w->events;
473		588
474	#if EV_SELECT_IS_WINSOCKET	589	#if EV_SELECT_IS_WINSOCKET
475	if (events)	590	if (events)
476	{	591	{
477	unsigned long argp;	592	unsigned long argp;
478	anfd->handle = _get_osfhandle (fd);	593	anfd->handle = _get_osfhandle (fd);
479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	594	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
480	}	595	}
481	#endif	596	#endif
482		597
		598	{
		599	unsigned char o_events = anfd->events;
		600	unsigned char o_reify = anfd->reify;
		601
483	anfd->reify = 0;	602	anfd->reify = 0;
484
485	backend_modify (EV_A_ fd, anfd->events, events);
486	anfd->events = events;	603	anfd->events = events;
		604
		605	if (o_events != events || o_reify & EV_IOFDSET)
		606	backend_modify (EV_A_ fd, o_events, events);
		607	}
487	}	608	}
488		609
489	fdchangecnt = 0;	610	fdchangecnt = 0;
490	}	611	}
491		612
492	void inline_size	613	void inline_size
493	fd_change (EV_P_ int fd)	614	fd_change (EV_P_ int fd, int flags)
494	{	615	{
495	if (expect_false (anfds [fd].reify))	616	unsigned char reify = anfds [fd].reify;
496	return;
497
498	anfds [fd].reify = 1;	617	anfds [fd].reify |= flags;
499		618
		619	if (expect_true (!reify))
		620	{
500	++fdchangecnt;	621	++fdchangecnt;
501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	622	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502	fdchanges [fdchangecnt - 1] = fd;	623	fdchanges [fdchangecnt - 1] = fd;
		624	}
503	}	625	}
504		626
505	void inline_speed	627	void inline_speed
506	fd_kill (EV_P_ int fd)	628	fd_kill (EV_P_ int fd)
507	{	629	{
…		…
554	static void noinline	676	static void noinline
555	fd_rearm_all (EV_P)	677	fd_rearm_all (EV_P)
556	{	678	{
557	int fd;	679	int fd;
558		680
559	/* this should be highly optimised to not do anything but set a flag */
560	for (fd = 0; fd < anfdmax; ++fd)	681	for (fd = 0; fd < anfdmax; ++fd)
561	if (anfds [fd].events)	682	if (anfds [fd].events)
562	{	683	{
563	anfds [fd].events = 0;	684	anfds [fd].events = 0;
564	fd_change (EV_A_ fd);	685	fd_change (EV_A_ fd, EV_IOFDSET | 1);
565	}	686	}
566	}	687	}
567		688
568	/*****************************************************************************/	689	/*****************************************************************************/
569		690
570	void inline_speed	691	void inline_speed
571	upheap (WT *heap, int k)	692	upheap (WT *heap, int k)
572	{	693	{
573	WT w = heap [k];	694	WT w = heap [k];
574		695
575	while (k && heap [k >> 1]->at > w->at)	696	while (k)
576	{	697	{
		698	int p = (k - 1) >> 1;
		699
		700	if (heap [p]->at <= w->at)
		701	break;
		702
577	heap [k] = heap [k >> 1];	703	heap [k] = heap [p];
578	((W)heap [k])->active = k + 1;	704	((W)heap [k])->active = k + 1;
579	k >>= 1;	705	k = p;
580	}	706	}
581		707
582	heap [k] = w;	708	heap [k] = w;
583	((W)heap [k])->active = k + 1;	709	((W)heap [k])->active = k + 1;
584
585	}	710	}
586		711
587	void inline_speed	712	void inline_speed
588	downheap (WT *heap, int N, int k)	713	downheap (WT *heap, int N, int k)
589	{	714	{
590	WT w = heap [k];	715	WT w = heap [k];
591		716
592	while (k < (N >> 1))	717	for (;;)
593	{	718	{
594	int j = k << 1;	719	int c = (k << 1) + 1;
595		720
596	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	721	if (c >= N)
597	++j;
598
599	if (w->at <= heap [j]->at)
600	break;	722	break;
601		723
		724	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		725	? 1 : 0;
		726
		727	if (w->at <= heap [c]->at)
		728	break;
		729
602	heap [k] = heap [j];	730	heap [k] = heap [c];
603	((W)heap [k])->active = k + 1;	731	((W)heap [k])->active = k + 1;
		732
604	k = j;	733	k = c;
605	}	734	}
606		735
607	heap [k] = w;	736	heap [k] = w;
608	((W)heap [k])->active = k + 1;	737	((W)heap [k])->active = k + 1;
609	}	738	}
…		…
691	for (signum = signalmax; signum--; )	820	for (signum = signalmax; signum--; )
692	if (signals [signum].gotsig)	821	if (signals [signum].gotsig)
693	ev_feed_signal_event (EV_A_ signum + 1);	822	ev_feed_signal_event (EV_A_ signum + 1);
694	}	823	}
695		824
696	void inline_size	825	void inline_speed
697	fd_intern (int fd)	826	fd_intern (int fd)
698	{	827	{
699	#ifdef _WIN32	828	#ifdef _WIN32
700	int arg = 1;	829	int arg = 1;
701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	830	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
716	ev_unref (EV_A); /* child watcher should not keep loop alive */	845	ev_unref (EV_A); /* child watcher should not keep loop alive */
717	}	846	}
718		847
719	/*****************************************************************************/	848	/*****************************************************************************/
720		849
721	static ev_child *childs [EV_PID_HASHSIZE];	850	static WL childs [EV_PID_HASHSIZE];
722		851
723	#ifndef _WIN32	852	#ifndef _WIN32
724		853
725	static ev_signal childev;	854	static ev_signal childev;
726		855
…		…
730	ev_child *w;	859	ev_child *w;
731		860
732	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	861	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
733	if (w->pid == pid || !w->pid)	862	if (w->pid == pid || !w->pid)
734	{	863	{
735	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	864	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
736	w->rpid = pid;	865	w->rpid = pid;
737	w->rstatus = status;	866	w->rstatus = status;
738	ev_feed_event (EV_A_ (W)w, EV_CHILD);	867	ev_feed_event (EV_A_ (W)w, EV_CHILD);
739	}	868	}
740	}	869	}
741		870
742	#ifndef WCONTINUED	871	#ifndef WCONTINUED
…		…
841	}	970	}
842		971
843	unsigned int	972	unsigned int
844	ev_embeddable_backends (void)	973	ev_embeddable_backends (void)
845	{	974	{
		975	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
846	return EVBACKEND_EPOLL	976	return EVBACKEND_KQUEUE
847	| EVBACKEND_KQUEUE
848	| EVBACKEND_PORT;	977	| EVBACKEND_PORT;
849	}	978	}
850		979
851	unsigned int	980	unsigned int
852	ev_backend (EV_P)	981	ev_backend (EV_P)
853	{	982	{
854	return backend;	983	return backend;
855	}	984	}
856		985
857	static void	986	unsigned int
		987	ev_loop_count (EV_P)
		988	{
		989	return loop_count;
		990	}
		991
		992	void
		993	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		994	{
		995	io_blocktime = interval;
		996	}
		997
		998	void
		999	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	timeout_blocktime = interval;
		1002	}
		1003
		1004	static void noinline
858	loop_init (EV_P_ unsigned int flags)	1005	loop_init (EV_P_ unsigned int flags)
859	{	1006	{
860	if (!backend)	1007	if (!backend)
861	{	1008	{
862	#if EV_USE_MONOTONIC	1009	#if EV_USE_MONOTONIC
…		…
870	ev_rt_now = ev_time ();	1017	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1018	mn_now = get_clock ();
872	now_floor = mn_now;	1019	now_floor = mn_now;
873	rtmn_diff = ev_rt_now - mn_now;	1020	rtmn_diff = ev_rt_now - mn_now;
874		1021
		1022	io_blocktime = 0.;
		1023	timeout_blocktime = 0.;
		1024
		1025	/* pid check not overridable via env */
		1026	#ifndef _WIN32
		1027	if (flags & EVFLAG_FORKCHECK)
		1028	curpid = getpid ();
		1029	#endif
		1030
875	if (!(flags & EVFLAG_NOENV)	1031	if (!(flags & EVFLAG_NOENV)
876	&& !enable_secure ()	1032	&& !enable_secure ()
877	&& getenv ("LIBEV_FLAGS"))	1033	&& getenv ("LIBEV_FLAGS"))
878	flags = atoi (getenv ("LIBEV_FLAGS"));	1034	flags = atoi (getenv ("LIBEV_FLAGS"));
879		1035
880	if (!(flags & 0x0000ffffUL))	1036	if (!(flags & 0x0000ffffUL))
881	flags |= ev_recommended_backends ();	1037	flags |= ev_recommended_backends ();
882		1038
883	backend = 0;	1039	backend = 0;
		1040	backend_fd = -1;
		1041	#if EV_USE_INOTIFY
		1042	fs_fd = -2;
		1043	#endif
		1044
884	#if EV_USE_PORT	1045	#if EV_USE_PORT
885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1046	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886	#endif	1047	#endif
887	#if EV_USE_KQUEUE	1048	#if EV_USE_KQUEUE
888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1049	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
900	ev_init (&sigev, sigcb);	1061	ev_init (&sigev, sigcb);
901	ev_set_priority (&sigev, EV_MAXPRI);	1062	ev_set_priority (&sigev, EV_MAXPRI);
902	}	1063	}
903	}	1064	}
904		1065
905	static void	1066	static void noinline
906	loop_destroy (EV_P)	1067	loop_destroy (EV_P)
907	{	1068	{
908	int i;	1069	int i;
		1070
		1071	#if EV_USE_INOTIFY
		1072	if (fs_fd >= 0)
		1073	close (fs_fd);
		1074	#endif
		1075
		1076	if (backend_fd >= 0)
		1077	close (backend_fd);
909		1078
910	#if EV_USE_PORT	1079	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1080	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912	#endif	1081	#endif
913	#if EV_USE_KQUEUE	1082	#if EV_USE_KQUEUE
…		…
922	#if EV_USE_SELECT	1091	#if EV_USE_SELECT
923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1092	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924	#endif	1093	#endif
925		1094
926	for (i = NUMPRI; i--; )	1095	for (i = NUMPRI; i--; )
		1096	{
927	array_free (pending, [i]);	1097	array_free (pending, [i]);
		1098	#if EV_IDLE_ENABLE
		1099	array_free (idle, [i]);
		1100	#endif
		1101	}
		1102
		1103	ev_free (anfds); anfdmax = 0;
928		1104
929	/* have to use the microsoft-never-gets-it-right macro */	1105	/* have to use the microsoft-never-gets-it-right macro */
930	array_free (fdchange, EMPTY0);	1106	array_free (fdchange, EMPTY);
931	array_free (timer, EMPTY0);	1107	array_free (timer, EMPTY);
932	#if EV_PERIODIC_ENABLE	1108	#if EV_PERIODIC_ENABLE
933	array_free (periodic, EMPTY0);	1109	array_free (periodic, EMPTY);
934	#endif	1110	#endif
		1111	#if EV_FORK_ENABLE
935	array_free (idle, EMPTY0);	1112	array_free (fork, EMPTY);
		1113	#endif
936	array_free (prepare, EMPTY0);	1114	array_free (prepare, EMPTY);
937	array_free (check, EMPTY0);	1115	array_free (check, EMPTY);
938		1116
939	backend = 0;	1117	backend = 0;
940	}	1118	}
941		1119
942	static void	1120	void inline_size infy_fork (EV_P);
		1121
		1122	void inline_size
943	loop_fork (EV_P)	1123	loop_fork (EV_P)
944	{	1124	{
945	#if EV_USE_PORT	1125	#if EV_USE_PORT
946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1126	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947	#endif	1127	#endif
948	#if EV_USE_KQUEUE	1128	#if EV_USE_KQUEUE
949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1129	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950	#endif	1130	#endif
951	#if EV_USE_EPOLL	1131	#if EV_USE_EPOLL
952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1132	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1133	#endif
		1134	#if EV_USE_INOTIFY
		1135	infy_fork (EV_A);
953	#endif	1136	#endif
954		1137
955	if (ev_is_active (&sigev))	1138	if (ev_is_active (&sigev))
956	{	1139	{
957	/* default loop */	1140	/* default loop */
…		…
1073	postfork = 1;	1256	postfork = 1;
1074	}	1257	}
1075		1258
1076	/*****************************************************************************/	1259	/*****************************************************************************/
1077		1260
1078	int inline_size	1261	void
1079	any_pending (EV_P)	1262	ev_invoke (EV_P_ void *w, int revents)
1080	{	1263	{
1081	int pri;	1264	EV_CB_INVOKE ((W)w, revents);
1082
1083	for (pri = NUMPRI; pri--; )
1084	if (pendingcnt [pri])
1085	return 1;
1086
1087	return 0;
1088	}	1265	}
1089		1266
1090	void inline_speed	1267	void inline_speed
1091	call_pending (EV_P)	1268	call_pending (EV_P)
1092	{	1269	{
…		…
1097	{	1274	{
1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1275	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099		1276
1100	if (expect_true (p->w))	1277	if (expect_true (p->w))
1101	{	1278	{
1102	assert (("non-pending watcher on pending list", p->w->pending));	1279	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1103		1280
1104	p->w->pending = 0;	1281	p->w->pending = 0;
1105	EV_CB_INVOKE (p->w, p->events);	1282	EV_CB_INVOKE (p->w, p->events);
1106	}	1283	}
1107	}	1284	}
…		…
1110	void inline_size	1287	void inline_size
1111	timers_reify (EV_P)	1288	timers_reify (EV_P)
1112	{	1289	{
1113	while (timercnt && ((WT)timers [0])->at <= mn_now)	1290	while (timercnt && ((WT)timers [0])->at <= mn_now)
1114	{	1291	{
1115	ev_timer *w = timers [0];	1292	ev_timer *w = (ev_timer *)timers [0];
1116		1293
1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1294	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1118		1295
1119	/* first reschedule or stop timer */	1296	/* first reschedule or stop timer */
1120	if (w->repeat)	1297	if (w->repeat)
1121	{	1298	{
1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1299	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123		1300
1124	((WT)w)->at += w->repeat;	1301	((WT)w)->at += w->repeat;
1125	if (((WT)w)->at < mn_now)	1302	if (((WT)w)->at < mn_now)
1126	((WT)w)->at = mn_now;	1303	((WT)w)->at = mn_now;
1127		1304
1128	downheap ((WT *)timers, timercnt, 0);	1305	downheap (timers, timercnt, 0);
1129	}	1306	}
1130	else	1307	else
1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1308	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132		1309
1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1310	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1138	void inline_size	1315	void inline_size
1139	periodics_reify (EV_P)	1316	periodics_reify (EV_P)
1140	{	1317	{
1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1318	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1142	{	1319	{
1143	ev_periodic *w = periodics [0];	1320	ev_periodic *w = (ev_periodic *)periodics [0];
1144		1321
1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1322	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1146		1323
1147	/* first reschedule or stop timer */	1324	/* first reschedule or stop timer */
1148	if (w->reschedule_cb)	1325	if (w->reschedule_cb)
1149	{	1326	{
1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1327	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1151	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1328	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1152	downheap ((WT *)periodics, periodiccnt, 0);	1329	downheap (periodics, periodiccnt, 0);
1153	}	1330	}
1154	else if (w->interval)	1331	else if (w->interval)
1155	{	1332	{
1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1333	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1334	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1157	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1335	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1158	downheap ((WT *)periodics, periodiccnt, 0);	1336	downheap (periodics, periodiccnt, 0);
1159	}	1337	}
1160	else	1338	else
1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1339	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162		1340
1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1341	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1170	int i;	1348	int i;
1171		1349
1172	/* adjust periodics after time jump */	1350	/* adjust periodics after time jump */
1173	for (i = 0; i < periodiccnt; ++i)	1351	for (i = 0; i < periodiccnt; ++i)
1174	{	1352	{
1175	ev_periodic *w = periodics [i];	1353	ev_periodic *w = (ev_periodic *)periodics [i];
1176		1354
1177	if (w->reschedule_cb)	1355	if (w->reschedule_cb)
1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1356	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1179	else if (w->interval)	1357	else if (w->interval)
1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1358	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1181	}	1359	}
1182		1360
1183	/* now rebuild the heap */	1361	/* now rebuild the heap */
1184	for (i = periodiccnt >> 1; i--; )	1362	for (i = periodiccnt >> 1; i--; )
1185	downheap ((WT *)periodics, periodiccnt, i);	1363	downheap (periodics, periodiccnt, i);
1186	}	1364	}
1187	#endif	1365	#endif
1188		1366
		1367	#if EV_IDLE_ENABLE
1189	int inline_size	1368	void inline_size
1190	time_update_monotonic (EV_P)	1369	idle_reify (EV_P)
1191	{	1370	{
		1371	if (expect_false (idleall))
		1372	{
		1373	int pri;
		1374
		1375	for (pri = NUMPRI; pri--; )
		1376	{
		1377	if (pendingcnt [pri])
		1378	break;
		1379
		1380	if (idlecnt [pri])
		1381	{
		1382	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1383	break;
		1384	}
		1385	}
		1386	}
		1387	}
		1388	#endif
		1389
		1390	void inline_speed
		1391	time_update (EV_P_ ev_tstamp max_block)
		1392	{
		1393	int i;
		1394
		1395	#if EV_USE_MONOTONIC
		1396	if (expect_true (have_monotonic))
		1397	{
		1398	ev_tstamp odiff = rtmn_diff;
		1399
1192	mn_now = get_clock ();	1400	mn_now = get_clock ();
1193		1401
		1402	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1403	/* interpolate in the meantime */
1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1404	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195	{	1405	{
1196	ev_rt_now = rtmn_diff + mn_now;	1406	ev_rt_now = rtmn_diff + mn_now;
1197	return 0;	1407	return;
1198	}	1408	}
1199	else	1409
1200	{
1201	now_floor = mn_now;	1410	now_floor = mn_now;
1202	ev_rt_now = ev_time ();	1411	ev_rt_now = ev_time ();
1203	return 1;
1204	}
1205	}
1206		1412
1207	void inline_size	1413	/* loop a few times, before making important decisions.
1208	time_update (EV_P)	1414	* on the choice of "4": one iteration isn't enough,
1209	{	1415	* in case we get preempted during the calls to
1210	int i;	1416	* ev_time and get_clock. a second call is almost guaranteed
1211		1417	* to succeed in that case, though. and looping a few more times
1212	#if EV_USE_MONOTONIC	1418	* doesn't hurt either as we only do this on time-jumps or
1213	if (expect_true (have_monotonic))	1419	* in the unlikely event of having been preempted here.
1214	{	1420	*/
1215	if (time_update_monotonic (EV_A))	1421	for (i = 4; --i; )
1216	{	1422	{
1217	ev_tstamp odiff = rtmn_diff;
1218
1219	/* loop a few times, before making important decisions.
1220	* on the choice of "4": one iteration isn't enough,
1221	* in case we get preempted during the calls to
1222	* ev_time and get_clock. a second call is almost guarenteed
1223	* to succeed in that case, though. and looping a few more times
1224	* doesn't hurt either as we only do this on time-jumps or
1225	* in the unlikely event of getting preempted here.
1226	*/
1227	for (i = 4; --i; )
1228	{
1229	rtmn_diff = ev_rt_now - mn_now;	1423	rtmn_diff = ev_rt_now - mn_now;
1230		1424
1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1425	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1232	return; /* all is well */	1426	return; /* all is well */
1233		1427
1234	ev_rt_now = ev_time ();	1428	ev_rt_now = ev_time ();
1235	mn_now = get_clock ();	1429	mn_now = get_clock ();
1236	now_floor = mn_now;	1430	now_floor = mn_now;
1237	}	1431	}
1238		1432
1239	# if EV_PERIODIC_ENABLE	1433	# if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1434	periodics_reschedule (EV_A);
1241	# endif	1435	# endif
1242	/* no timer adjustment, as the monotonic clock doesn't jump */	1436	/* no timer adjustment, as the monotonic clock doesn't jump */
1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1437	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244	}
1245	}	1438	}
1246	else	1439	else
1247	#endif	1440	#endif
1248	{	1441	{
1249	ev_rt_now = ev_time ();	1442	ev_rt_now = ev_time ();
1250		1443
1251	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1444	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252	{	1445	{
1253	#if EV_PERIODIC_ENABLE	1446	#if EV_PERIODIC_ENABLE
1254	periodics_reschedule (EV_A);	1447	periodics_reschedule (EV_A);
1255	#endif	1448	#endif
1256
1257	/* adjust timers. this is easy, as the offset is the same for all */	1449	/* adjust timers. this is easy, as the offset is the same for all of them */
1258	for (i = 0; i < timercnt; ++i)	1450	for (i = 0; i < timercnt; ++i)
1259	((WT)timers [i])->at += ev_rt_now - mn_now;	1451	((WT)timers [i])->at += ev_rt_now - mn_now;
1260	}	1452	}
1261		1453
1262	mn_now = ev_rt_now;	1454	mn_now = ev_rt_now;
…		…
1282	{	1474	{
1283	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1475	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1284	? EVUNLOOP_ONE	1476	? EVUNLOOP_ONE
1285	: EVUNLOOP_CANCEL;	1477	: EVUNLOOP_CANCEL;
1286		1478
1287	while (activecnt)	1479	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1480
		1481	do
1288	{	1482	{
1289	/* we might have forked, so reify kernel state if necessary */	1483	#ifndef _WIN32
		1484	if (expect_false (curpid)) /* penalise the forking check even more */
		1485	if (expect_false (getpid () != curpid))
		1486	{
		1487	curpid = getpid ();
		1488	postfork = 1;
		1489	}
		1490	#endif
		1491
1290	#if EV_FORK_ENABLE	1492	#if EV_FORK_ENABLE
		1493	/* we might have forked, so queue fork handlers */
1291	if (expect_false (postfork))	1494	if (expect_false (postfork))
1292	if (forkcnt)	1495	if (forkcnt)
1293	{	1496	{
1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1497	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295	call_pending (EV_A);	1498	call_pending (EV_A);
1296	}	1499	}
1297	#endif	1500	#endif
1298		1501
1299	/* queue check watchers (and execute them) */	1502	/* queue prepare watchers (and execute them) */
1300	if (expect_false (preparecnt))	1503	if (expect_false (preparecnt))
1301	{	1504	{
1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1505	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303	call_pending (EV_A);	1506	call_pending (EV_A);
1304	}	1507	}
1305		1508
		1509	if (expect_false (!activecnt))
		1510	break;
		1511
1306	/* we might have forked, so reify kernel state if necessary */	1512	/* we might have forked, so reify kernel state if necessary */
1307	if (expect_false (postfork))	1513	if (expect_false (postfork))
1308	loop_fork (EV_A);	1514	loop_fork (EV_A);
1309		1515
1310	/* update fd-related kernel structures */	1516	/* update fd-related kernel structures */
1311	fd_reify (EV_A);	1517	fd_reify (EV_A);
1312		1518
1313	/* calculate blocking time */	1519	/* calculate blocking time */
1314	{	1520	{
1315	double block;	1521	ev_tstamp waittime = 0.;
		1522	ev_tstamp sleeptime = 0.;
1316		1523
1317	if (flags & EVLOOP_NONBLOCK || idlecnt)	1524	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1318	block = 0.; /* do not block at all */
1319	else
1320	{	1525	{
1321	/* update time to cancel out callback processing overhead */	1526	/* update time to cancel out callback processing overhead */
1322	#if EV_USE_MONOTONIC
1323	if (expect_true (have_monotonic))
1324	time_update_monotonic (EV_A);	1527	time_update (EV_A_ 1e100);
1325	else
1326	#endif
1327	{
1328	ev_rt_now = ev_time ();
1329	mn_now = ev_rt_now;
1330	}
1331		1528
1332	block = MAX_BLOCKTIME;	1529	waittime = MAX_BLOCKTIME;
1333		1530
1334	if (timercnt)	1531	if (timercnt)
1335	{	1532	{
1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1533	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1337	if (block > to) block = to;	1534	if (waittime > to) waittime = to;
1338	}	1535	}
1339		1536
1340	#if EV_PERIODIC_ENABLE	1537	#if EV_PERIODIC_ENABLE
1341	if (periodiccnt)	1538	if (periodiccnt)
1342	{	1539	{
1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1540	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1344	if (block > to) block = to;	1541	if (waittime > to) waittime = to;
1345	}	1542	}
1346	#endif	1543	#endif
1347		1544
1348	if (expect_false (block < 0.)) block = 0.;	1545	if (expect_false (waittime < timeout_blocktime))
		1546	waittime = timeout_blocktime;
		1547
		1548	sleeptime = waittime - backend_fudge;
		1549
		1550	if (expect_true (sleeptime > io_blocktime))
		1551	sleeptime = io_blocktime;
		1552
		1553	if (sleeptime)
		1554	{
		1555	ev_sleep (sleeptime);
		1556	waittime -= sleeptime;
		1557	}
1349	}	1558	}
1350		1559
		1560	++loop_count;
1351	backend_poll (EV_A_ block);	1561	backend_poll (EV_A_ waittime);
		1562
		1563	/* update ev_rt_now, do magic */
		1564	time_update (EV_A_ waittime + sleeptime);
1352	}	1565	}
1353
1354	/* update ev_rt_now, do magic */
1355	time_update (EV_A);
1356		1566
1357	/* queue pending timers and reschedule them */	1567	/* queue pending timers and reschedule them */
1358	timers_reify (EV_A); /* relative timers called last */	1568	timers_reify (EV_A); /* relative timers called last */
1359	#if EV_PERIODIC_ENABLE	1569	#if EV_PERIODIC_ENABLE
1360	periodics_reify (EV_A); /* absolute timers called first */	1570	periodics_reify (EV_A); /* absolute timers called first */
1361	#endif	1571	#endif
1362		1572
		1573	#if EV_IDLE_ENABLE
1363	/* queue idle watchers unless other events are pending */	1574	/* queue idle watchers unless other events are pending */
1364	if (idlecnt && !any_pending (EV_A))	1575	idle_reify (EV_A);
1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1576	#endif
1366		1577
1367	/* queue check watchers, to be executed first */	1578	/* queue check watchers, to be executed first */
1368	if (expect_false (checkcnt))	1579	if (expect_false (checkcnt))
1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1580	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370		1581
1371	call_pending (EV_A);	1582	call_pending (EV_A);
1372		1583
1373	if (expect_false (loop_done))
1374	break;
1375	}	1584	}
		1585	while (expect_true (activecnt && !loop_done));
1376		1586
1377	if (loop_done == EVUNLOOP_ONE)	1587	if (loop_done == EVUNLOOP_ONE)
1378	loop_done = EVUNLOOP_CANCEL;	1588	loop_done = EVUNLOOP_CANCEL;
1379	}	1589	}
1380		1590
…		…
1407	head = &(*head)->next;	1617	head = &(*head)->next;
1408	}	1618	}
1409	}	1619	}
1410		1620
1411	void inline_speed	1621	void inline_speed
1412	ev_clear_pending (EV_P_ W w)	1622	clear_pending (EV_P_ W w)
1413	{	1623	{
1414	if (w->pending)	1624	if (w->pending)
1415	{	1625	{
1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1626	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417	w->pending = 0;	1627	w->pending = 0;
1418	}	1628	}
1419	}	1629	}
1420		1630
		1631	int
		1632	ev_clear_pending (EV_P_ void *w)
		1633	{
		1634	W w_ = (W)w;
		1635	int pending = w_->pending;
		1636
		1637	if (expect_true (pending))
		1638	{
		1639	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1640	w_->pending = 0;
		1641	p->w = 0;
		1642	return p->events;
		1643	}
		1644	else
		1645	return 0;
		1646	}
		1647
		1648	void inline_size
		1649	pri_adjust (EV_P_ W w)
		1650	{
		1651	int pri = w->priority;
		1652	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1653	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1654	w->priority = pri;
		1655	}
		1656
1421	void inline_speed	1657	void inline_speed
1422	ev_start (EV_P_ W w, int active)	1658	ev_start (EV_P_ W w, int active)
1423	{	1659	{
1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1660	pri_adjust (EV_A_ w);
1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427	w->active = active;	1661	w->active = active;
1428	ev_ref (EV_A);	1662	ev_ref (EV_A);
1429	}	1663	}
1430		1664
1431	void inline_size	1665	void inline_size
…		…
1435	w->active = 0;	1669	w->active = 0;
1436	}	1670	}
1437		1671
1438	/*****************************************************************************/	1672	/*****************************************************************************/
1439		1673
1440	void	1674	void noinline
1441	ev_io_start (EV_P_ ev_io *w)	1675	ev_io_start (EV_P_ ev_io *w)
1442	{	1676	{
1443	int fd = w->fd;	1677	int fd = w->fd;
1444		1678
1445	if (expect_false (ev_is_active (w)))	1679	if (expect_false (ev_is_active (w)))
…		…
1447		1681
1448	assert (("ev_io_start called with negative fd", fd >= 0));	1682	assert (("ev_io_start called with negative fd", fd >= 0));
1449		1683
1450	ev_start (EV_A_ (W)w, 1);	1684	ev_start (EV_A_ (W)w, 1);
1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1685	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1686	wlist_add (&anfds[fd].head, (WL)w);
1453		1687
1454	fd_change (EV_A_ fd);	1688	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1689	w->events &= ~EV_IOFDSET;
1455	}	1690	}
1456		1691
1457	void	1692	void noinline
1458	ev_io_stop (EV_P_ ev_io *w)	1693	ev_io_stop (EV_P_ ev_io *w)
1459	{	1694	{
1460	ev_clear_pending (EV_A_ (W)w);	1695	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1696	if (expect_false (!ev_is_active (w)))
1462	return;	1697	return;
1463		1698
1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1699	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465		1700
1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1701	wlist_del (&anfds[w->fd].head, (WL)w);
1467	ev_stop (EV_A_ (W)w);	1702	ev_stop (EV_A_ (W)w);
1468		1703
1469	fd_change (EV_A_ w->fd);	1704	fd_change (EV_A_ w->fd, 1);
1470	}	1705	}
1471		1706
1472	void	1707	void noinline
1473	ev_timer_start (EV_P_ ev_timer *w)	1708	ev_timer_start (EV_P_ ev_timer *w)
1474	{	1709	{
1475	if (expect_false (ev_is_active (w)))	1710	if (expect_false (ev_is_active (w)))
1476	return;	1711	return;
1477		1712
1478	((WT)w)->at += mn_now;	1713	((WT)w)->at += mn_now;
1479		1714
1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1715	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481		1716
1482	ev_start (EV_A_ (W)w, ++timercnt);	1717	ev_start (EV_A_ (W)w, ++timercnt);
1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1718	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1484	timers [timercnt - 1] = w;	1719	timers [timercnt - 1] = (WT)w;
1485	upheap ((WT *)timers, timercnt - 1);	1720	upheap (timers, timercnt - 1);
1486		1721
1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1722	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1488	}	1723	}
1489		1724
1490	void	1725	void noinline
1491	ev_timer_stop (EV_P_ ev_timer *w)	1726	ev_timer_stop (EV_P_ ev_timer *w)
1492	{	1727	{
1493	ev_clear_pending (EV_A_ (W)w);	1728	clear_pending (EV_A_ (W)w);
1494	if (expect_false (!ev_is_active (w)))	1729	if (expect_false (!ev_is_active (w)))
1495	return;	1730	return;
1496		1731
1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1732	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1498		1733
		1734	{
		1735	int active = ((W)w)->active;
		1736
1499	if (expect_true (((W)w)->active < timercnt--))	1737	if (expect_true (--active < --timercnt))
1500	{	1738	{
1501	timers [((W)w)->active - 1] = timers [timercnt];	1739	timers [active] = timers [timercnt];
1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1740	adjustheap (timers, timercnt, active);
1503	}	1741	}
		1742	}
1504		1743
1505	((WT)w)->at -= mn_now;	1744	((WT)w)->at -= mn_now;
1506		1745
1507	ev_stop (EV_A_ (W)w);	1746	ev_stop (EV_A_ (W)w);
1508	}	1747	}
1509		1748
1510	void	1749	void noinline
1511	ev_timer_again (EV_P_ ev_timer *w)	1750	ev_timer_again (EV_P_ ev_timer *w)
1512	{	1751	{
1513	if (ev_is_active (w))	1752	if (ev_is_active (w))
1514	{	1753	{
1515	if (w->repeat)	1754	if (w->repeat)
1516	{	1755	{
1517	((WT)w)->at = mn_now + w->repeat;	1756	((WT)w)->at = mn_now + w->repeat;
1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1757	adjustheap (timers, timercnt, ((W)w)->active - 1);
1519	}	1758	}
1520	else	1759	else
1521	ev_timer_stop (EV_A_ w);	1760	ev_timer_stop (EV_A_ w);
1522	}	1761	}
1523	else if (w->repeat)	1762	else if (w->repeat)
…		…
1526	ev_timer_start (EV_A_ w);	1765	ev_timer_start (EV_A_ w);
1527	}	1766	}
1528	}	1767	}
1529		1768
1530	#if EV_PERIODIC_ENABLE	1769	#if EV_PERIODIC_ENABLE
1531	void	1770	void noinline
1532	ev_periodic_start (EV_P_ ev_periodic *w)	1771	ev_periodic_start (EV_P_ ev_periodic *w)
1533	{	1772	{
1534	if (expect_false (ev_is_active (w)))	1773	if (expect_false (ev_is_active (w)))
1535	return;	1774	return;
1536		1775
…		…
1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1777	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1539	else if (w->interval)	1778	else if (w->interval)
1540	{	1779	{
1541	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1780	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1542	/* this formula differs from the one in periodic_reify because we do not always round up */	1781	/* this formula differs from the one in periodic_reify because we do not always round up */
1543	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1782	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544	}	1783	}
		1784	else
		1785	((WT)w)->at = w->offset;
1545		1786
1546	ev_start (EV_A_ (W)w, ++periodiccnt);	1787	ev_start (EV_A_ (W)w, ++periodiccnt);
1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1788	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1548	periodics [periodiccnt - 1] = w;	1789	periodics [periodiccnt - 1] = (WT)w;
1549	upheap ((WT *)periodics, periodiccnt - 1);	1790	upheap (periodics, periodiccnt - 1);
1550		1791
1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1792	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1552	}	1793	}
1553		1794
1554	void	1795	void noinline
1555	ev_periodic_stop (EV_P_ ev_periodic *w)	1796	ev_periodic_stop (EV_P_ ev_periodic *w)
1556	{	1797	{
1557	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1558	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1559	return;	1800	return;
1560		1801
1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1802	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1562		1803
		1804	{
		1805	int active = ((W)w)->active;
		1806
1563	if (expect_true (((W)w)->active < periodiccnt--))	1807	if (expect_true (--active < --periodiccnt))
1564	{	1808	{
1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1809	periodics [active] = periodics [periodiccnt];
1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1810	adjustheap (periodics, periodiccnt, active);
1567	}	1811	}
		1812	}
1568		1813
1569	ev_stop (EV_A_ (W)w);	1814	ev_stop (EV_A_ (W)w);
1570	}	1815	}
1571		1816
1572	void	1817	void noinline
1573	ev_periodic_again (EV_P_ ev_periodic *w)	1818	ev_periodic_again (EV_P_ ev_periodic *w)
1574	{	1819	{
1575	/* TODO: use adjustheap and recalculation */	1820	/* TODO: use adjustheap and recalculation */
1576	ev_periodic_stop (EV_A_ w);	1821	ev_periodic_stop (EV_A_ w);
1577	ev_periodic_start (EV_A_ w);	1822	ev_periodic_start (EV_A_ w);
…		…
1580		1825
1581	#ifndef SA_RESTART	1826	#ifndef SA_RESTART
1582	# define SA_RESTART 0	1827	# define SA_RESTART 0
1583	#endif	1828	#endif
1584		1829
1585	void	1830	void noinline
1586	ev_signal_start (EV_P_ ev_signal *w)	1831	ev_signal_start (EV_P_ ev_signal *w)
1587	{	1832	{
1588	#if EV_MULTIPLICITY	1833	#if EV_MULTIPLICITY
1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1834	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590	#endif	1835	#endif
1591	if (expect_false (ev_is_active (w)))	1836	if (expect_false (ev_is_active (w)))
1592	return;	1837	return;
1593		1838
1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1839	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1595		1840
		1841	{
		1842	#ifndef _WIN32
		1843	sigset_t full, prev;
		1844	sigfillset (&full);
		1845	sigprocmask (SIG_SETMASK, &full, &prev);
		1846	#endif
		1847
		1848	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1849
		1850	#ifndef _WIN32
		1851	sigprocmask (SIG_SETMASK, &prev, 0);
		1852	#endif
		1853	}
		1854
1596	ev_start (EV_A_ (W)w, 1);	1855	ev_start (EV_A_ (W)w, 1);
1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1856	wlist_add (&signals [w->signum - 1].head, (WL)w);
1599		1857
1600	if (!((WL)w)->next)	1858	if (!((WL)w)->next)
1601	{	1859	{
1602	#if _WIN32	1860	#if _WIN32
1603	signal (w->signum, sighandler);	1861	signal (w->signum, sighandler);
…		…
1609	sigaction (w->signum, &sa, 0);	1867	sigaction (w->signum, &sa, 0);
1610	#endif	1868	#endif
1611	}	1869	}
1612	}	1870	}
1613		1871
1614	void	1872	void noinline
1615	ev_signal_stop (EV_P_ ev_signal *w)	1873	ev_signal_stop (EV_P_ ev_signal *w)
1616	{	1874	{
1617	ev_clear_pending (EV_A_ (W)w);	1875	clear_pending (EV_A_ (W)w);
1618	if (expect_false (!ev_is_active (w)))	1876	if (expect_false (!ev_is_active (w)))
1619	return;	1877	return;
1620		1878
1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1879	wlist_del (&signals [w->signum - 1].head, (WL)w);
1622	ev_stop (EV_A_ (W)w);	1880	ev_stop (EV_A_ (W)w);
1623		1881
1624	if (!signals [w->signum - 1].head)	1882	if (!signals [w->signum - 1].head)
1625	signal (w->signum, SIG_DFL);	1883	signal (w->signum, SIG_DFL);
1626	}	1884	}
…		…
1633	#endif	1891	#endif
1634	if (expect_false (ev_is_active (w)))	1892	if (expect_false (ev_is_active (w)))
1635	return;	1893	return;
1636		1894
1637	ev_start (EV_A_ (W)w, 1);	1895	ev_start (EV_A_ (W)w, 1);
1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1896	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1639	}	1897	}
1640		1898
1641	void	1899	void
1642	ev_child_stop (EV_P_ ev_child *w)	1900	ev_child_stop (EV_P_ ev_child *w)
1643	{	1901	{
1644	ev_clear_pending (EV_A_ (W)w);	1902	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1903	if (expect_false (!ev_is_active (w)))
1646	return;	1904	return;
1647		1905
1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1906	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649	ev_stop (EV_A_ (W)w);	1907	ev_stop (EV_A_ (W)w);
1650	}	1908	}
1651		1909
1652	#if EV_STAT_ENABLE	1910	#if EV_STAT_ENABLE
1653		1911
…		…
1657	# endif	1915	# endif
1658		1916
1659	#define DEF_STAT_INTERVAL 5.0074891	1917	#define DEF_STAT_INTERVAL 5.0074891
1660	#define MIN_STAT_INTERVAL 0.1074891	1918	#define MIN_STAT_INTERVAL 0.1074891
1661		1919
		1920	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1921
		1922	#if EV_USE_INOTIFY
		1923	# define EV_INOTIFY_BUFSIZE 8192
		1924
		1925	static void noinline
		1926	infy_add (EV_P_ ev_stat *w)
		1927	{
		1928	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);
		1929
		1930	if (w->wd < 0)
		1931	{
		1932	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1933
		1934	/* monitor some parent directory for speedup hints */
		1935	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1936	{
		1937	char path [4096];
		1938	strcpy (path, w->path);
		1939
		1940	do
		1941	{
		1942	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1943	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1944
		1945	char *pend = strrchr (path, '/');
		1946
		1947	if (!pend)
		1948	break; /* whoops, no '/', complain to your admin */
		1949
		1950	*pend = 0;
		1951	w->wd = inotify_add_watch (fs_fd, path, mask);
		1952	}
		1953	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1954	}
		1955	}
		1956	else
		1957	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1958
		1959	if (w->wd >= 0)
		1960	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1961	}
		1962
		1963	static void noinline
		1964	infy_del (EV_P_ ev_stat *w)
		1965	{
		1966	int slot;
		1967	int wd = w->wd;
		1968
		1969	if (wd < 0)
		1970	return;
		1971
		1972	w->wd = -2;
		1973	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1974	wlist_del (&fs_hash [slot].head, (WL)w);
		1975
		1976	/* remove this watcher, if others are watching it, they will rearm */
		1977	inotify_rm_watch (fs_fd, wd);
		1978	}
		1979
		1980	static void noinline
		1981	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1982	{
		1983	if (slot < 0)
		1984	/* overflow, need to check for all hahs slots */
		1985	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1986	infy_wd (EV_A_ slot, wd, ev);
		1987	else
		1988	{
		1989	WL w_;
		1990
		1991	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1992	{
		1993	ev_stat *w = (ev_stat *)w_;
		1994	w_ = w_->next; /* lets us remove this watcher and all before it */
		1995
		1996	if (w->wd == wd || wd == -1)
		1997	{
		1998	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1999	{
		2000	w->wd = -1;
		2001	infy_add (EV_A_ w); /* re-add, no matter what */
		2002	}
		2003
		2004	stat_timer_cb (EV_A_ &w->timer, 0);
		2005	}
		2006	}
		2007	}
		2008	}
		2009
		2010	static void
		2011	infy_cb (EV_P_ ev_io *w, int revents)
		2012	{
		2013	char buf [EV_INOTIFY_BUFSIZE];
		2014	struct inotify_event *ev = (struct inotify_event *)buf;
		2015	int ofs;
		2016	int len = read (fs_fd, buf, sizeof (buf));
		2017
		2018	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2019	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2020	}
		2021
		2022	void inline_size
		2023	infy_init (EV_P)
		2024	{
		2025	if (fs_fd != -2)
		2026	return;
		2027
		2028	fs_fd = inotify_init ();
		2029
		2030	if (fs_fd >= 0)
		2031	{
		2032	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2033	ev_set_priority (&fs_w, EV_MAXPRI);
		2034	ev_io_start (EV_A_ &fs_w);
		2035	}
		2036	}
		2037
		2038	void inline_size
		2039	infy_fork (EV_P)
		2040	{
		2041	int slot;
		2042
		2043	if (fs_fd < 0)
		2044	return;
		2045
		2046	close (fs_fd);
		2047	fs_fd = inotify_init ();
		2048
		2049	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2050	{
		2051	WL w_ = fs_hash [slot].head;
		2052	fs_hash [slot].head = 0;
		2053
		2054	while (w_)
		2055	{
		2056	ev_stat *w = (ev_stat *)w_;
		2057	w_ = w_->next; /* lets us add this watcher */
		2058
		2059	w->wd = -1;
		2060
		2061	if (fs_fd >= 0)
		2062	infy_add (EV_A_ w); /* re-add, no matter what */
		2063	else
		2064	ev_timer_start (EV_A_ &w->timer);
		2065	}
		2066
		2067	}
		2068	}
		2069
		2070	#endif
		2071
1662	void	2072	void
1663	ev_stat_stat (EV_P_ ev_stat *w)	2073	ev_stat_stat (EV_P_ ev_stat *w)
1664	{	2074	{
1665	if (lstat (w->path, &w->attr) < 0)	2075	if (lstat (w->path, &w->attr) < 0)
1666	w->attr.st_nlink = 0;	2076	w->attr.st_nlink = 0;
1667	else if (!w->attr.st_nlink)	2077	else if (!w->attr.st_nlink)
1668	w->attr.st_nlink = 1;	2078	w->attr.st_nlink = 1;
1669	}	2079	}
1670		2080
1671	static void	2081	static void noinline
1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2082	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673	{	2083	{
1674	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	2084	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1675		2085
1676	/* we copy this here each the time so that */	2086	/* we copy this here each the time so that */
1677	/* prev has the old value when the callback gets invoked */	2087	/* prev has the old value when the callback gets invoked */
1678	w->prev = w->attr;	2088	w->prev = w->attr;
1679	ev_stat_stat (EV_A_ w);	2089	ev_stat_stat (EV_A_ w);
1680		2090
1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2091	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2092	if (
		2093	w->prev.st_dev != w->attr.st_dev
		2094	|| w->prev.st_ino != w->attr.st_ino
		2095	|| w->prev.st_mode != w->attr.st_mode
		2096	|| w->prev.st_nlink != w->attr.st_nlink
		2097	|| w->prev.st_uid != w->attr.st_uid
		2098	|| w->prev.st_gid != w->attr.st_gid
		2099	|| w->prev.st_rdev != w->attr.st_rdev
		2100	|| w->prev.st_size != w->attr.st_size
		2101	|| w->prev.st_atime != w->attr.st_atime
		2102	|| w->prev.st_mtime != w->attr.st_mtime
		2103	|| w->prev.st_ctime != w->attr.st_ctime
		2104	) {
		2105	#if EV_USE_INOTIFY
		2106	infy_del (EV_A_ w);
		2107	infy_add (EV_A_ w);
		2108	ev_stat_stat (EV_A_ w); /* avoid race... */
		2109	#endif
		2110
1682	ev_feed_event (EV_A_ w, EV_STAT);	2111	ev_feed_event (EV_A_ w, EV_STAT);
		2112	}
1683	}	2113	}
1684		2114
1685	void	2115	void
1686	ev_stat_start (EV_P_ ev_stat *w)	2116	ev_stat_start (EV_P_ ev_stat *w)
1687	{	2117	{
…		…
1697	if (w->interval < MIN_STAT_INTERVAL)	2127	if (w->interval < MIN_STAT_INTERVAL)
1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2128	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699		2129
1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2130	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1701	ev_set_priority (&w->timer, ev_priority (w));	2131	ev_set_priority (&w->timer, ev_priority (w));
		2132
		2133	#if EV_USE_INOTIFY
		2134	infy_init (EV_A);
		2135
		2136	if (fs_fd >= 0)
		2137	infy_add (EV_A_ w);
		2138	else
		2139	#endif
1702	ev_timer_start (EV_A_ &w->timer);	2140	ev_timer_start (EV_A_ &w->timer);
1703		2141
1704	ev_start (EV_A_ (W)w, 1);	2142	ev_start (EV_A_ (W)w, 1);
1705	}	2143	}
1706		2144
1707	void	2145	void
1708	ev_stat_stop (EV_P_ ev_stat *w)	2146	ev_stat_stop (EV_P_ ev_stat *w)
1709	{	2147	{
1710	ev_clear_pending (EV_A_ (W)w);	2148	clear_pending (EV_A_ (W)w);
1711	if (expect_false (!ev_is_active (w)))	2149	if (expect_false (!ev_is_active (w)))
1712	return;	2150	return;
1713		2151
		2152	#if EV_USE_INOTIFY
		2153	infy_del (EV_A_ w);
		2154	#endif
1714	ev_timer_stop (EV_A_ &w->timer);	2155	ev_timer_stop (EV_A_ &w->timer);
1715		2156
1716	ev_stop (EV_A_ (W)w);	2157	ev_stop (EV_A_ (W)w);
1717	}	2158	}
1718	#endif	2159	#endif
1719		2160
		2161	#if EV_IDLE_ENABLE
1720	void	2162	void
1721	ev_idle_start (EV_P_ ev_idle *w)	2163	ev_idle_start (EV_P_ ev_idle *w)
1722	{	2164	{
1723	if (expect_false (ev_is_active (w)))	2165	if (expect_false (ev_is_active (w)))
1724	return;	2166	return;
1725		2167
		2168	pri_adjust (EV_A_ (W)w);
		2169
		2170	{
		2171	int active = ++idlecnt [ABSPRI (w)];
		2172
		2173	++idleall;
1726	ev_start (EV_A_ (W)w, ++idlecnt);	2174	ev_start (EV_A_ (W)w, active);
		2175
1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2176	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728	idles [idlecnt - 1] = w;	2177	idles [ABSPRI (w)][active - 1] = w;
		2178	}
1729	}	2179	}
1730		2180
1731	void	2181	void
1732	ev_idle_stop (EV_P_ ev_idle *w)	2182	ev_idle_stop (EV_P_ ev_idle *w)
1733	{	2183	{
1734	ev_clear_pending (EV_A_ (W)w);	2184	clear_pending (EV_A_ (W)w);
1735	if (expect_false (!ev_is_active (w)))	2185	if (expect_false (!ev_is_active (w)))
1736	return;	2186	return;
1737		2187
1738	{	2188	{
1739	int active = ((W)w)->active;	2189	int active = ((W)w)->active;
1740	idles [active - 1] = idles [--idlecnt];	2190
		2191	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1741	((W)idles [active - 1])->active = active;	2192	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2193
		2194	ev_stop (EV_A_ (W)w);
		2195	--idleall;
1742	}	2196	}
1743
1744	ev_stop (EV_A_ (W)w);
1745	}	2197	}
		2198	#endif
1746		2199
1747	void	2200	void
1748	ev_prepare_start (EV_P_ ev_prepare *w)	2201	ev_prepare_start (EV_P_ ev_prepare *w)
1749	{	2202	{
1750	if (expect_false (ev_is_active (w)))	2203	if (expect_false (ev_is_active (w)))
…		…
1756	}	2209	}
1757		2210
1758	void	2211	void
1759	ev_prepare_stop (EV_P_ ev_prepare *w)	2212	ev_prepare_stop (EV_P_ ev_prepare *w)
1760	{	2213	{
1761	ev_clear_pending (EV_A_ (W)w);	2214	clear_pending (EV_A_ (W)w);
1762	if (expect_false (!ev_is_active (w)))	2215	if (expect_false (!ev_is_active (w)))
1763	return;	2216	return;
1764		2217
1765	{	2218	{
1766	int active = ((W)w)->active;	2219	int active = ((W)w)->active;
…		…
1783	}	2236	}
1784		2237
1785	void	2238	void
1786	ev_check_stop (EV_P_ ev_check *w)	2239	ev_check_stop (EV_P_ ev_check *w)
1787	{	2240	{
1788	ev_clear_pending (EV_A_ (W)w);	2241	clear_pending (EV_A_ (W)w);
1789	if (expect_false (!ev_is_active (w)))	2242	if (expect_false (!ev_is_active (w)))
1790	return;	2243	return;
1791		2244
1792	{	2245	{
1793	int active = ((W)w)->active;	2246	int active = ((W)w)->active;
…		…
1800		2253
1801	#if EV_EMBED_ENABLE	2254	#if EV_EMBED_ENABLE
1802	void noinline	2255	void noinline
1803	ev_embed_sweep (EV_P_ ev_embed *w)	2256	ev_embed_sweep (EV_P_ ev_embed *w)
1804	{	2257	{
1805	ev_loop (w->loop, EVLOOP_NONBLOCK);	2258	ev_loop (w->other, EVLOOP_NONBLOCK);
1806	}	2259	}
1807		2260
1808	static void	2261	static void
1809	embed_cb (EV_P_ ev_io *io, int revents)	2262	embed_io_cb (EV_P_ ev_io *io, int revents)
1810	{	2263	{
1811	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2264	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1812		2265
1813	if (ev_cb (w))	2266	if (ev_cb (w))
1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2267	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815	else	2268	else
1816	ev_embed_sweep (loop, w);	2269	ev_embed_sweep (loop, w);
1817	}	2270	}
1818		2271
		2272	static void
		2273	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2274	{
		2275	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2276
		2277	fd_reify (w->other);
		2278	}
		2279
1819	void	2280	void
1820	ev_embed_start (EV_P_ ev_embed *w)	2281	ev_embed_start (EV_P_ ev_embed *w)
1821	{	2282	{
1822	if (expect_false (ev_is_active (w)))	2283	if (expect_false (ev_is_active (w)))
1823	return;	2284	return;
1824		2285
1825	{	2286	{
1826	struct ev_loop *loop = w->loop;	2287	struct ev_loop *loop = w->other;
1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2288	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2289	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829	}	2290	}
1830		2291
1831	ev_set_priority (&w->io, ev_priority (w));	2292	ev_set_priority (&w->io, ev_priority (w));
1832	ev_io_start (EV_A_ &w->io);	2293	ev_io_start (EV_A_ &w->io);
1833		2294
		2295	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2296	ev_set_priority (&w->prepare, EV_MINPRI);
		2297	ev_prepare_start (EV_A_ &w->prepare);
		2298
1834	ev_start (EV_A_ (W)w, 1);	2299	ev_start (EV_A_ (W)w, 1);
1835	}	2300	}
1836		2301
1837	void	2302	void
1838	ev_embed_stop (EV_P_ ev_embed *w)	2303	ev_embed_stop (EV_P_ ev_embed *w)
1839	{	2304	{
1840	ev_clear_pending (EV_A_ (W)w);	2305	clear_pending (EV_A_ (W)w);
1841	if (expect_false (!ev_is_active (w)))	2306	if (expect_false (!ev_is_active (w)))
1842	return;	2307	return;
1843		2308
1844	ev_io_stop (EV_A_ &w->io);	2309	ev_io_stop (EV_A_ &w->io);
		2310	ev_prepare_stop (EV_A_ &w->prepare);
1845		2311
1846	ev_stop (EV_A_ (W)w);	2312	ev_stop (EV_A_ (W)w);
1847	}	2313	}
1848	#endif	2314	#endif
1849		2315
…		…
1860	}	2326	}
1861		2327
1862	void	2328	void
1863	ev_fork_stop (EV_P_ ev_fork *w)	2329	ev_fork_stop (EV_P_ ev_fork *w)
1864	{	2330	{
1865	ev_clear_pending (EV_A_ (W)w);	2331	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2332	if (expect_false (!ev_is_active (w)))
1867	return;	2333	return;
1868		2334
1869	{	2335	{
1870	int active = ((W)w)->active;	2336	int active = ((W)w)->active;
…		…
1938	ev_timer_set (&once->to, timeout, 0.);	2404	ev_timer_set (&once->to, timeout, 0.);
1939	ev_timer_start (EV_A_ &once->to);	2405	ev_timer_start (EV_A_ &once->to);
1940	}	2406	}
1941	}	2407	}
1942		2408
		2409	#if EV_MULTIPLICITY
		2410	#include "ev_wrap.h"
		2411	#endif
		2412
1943	#ifdef __cplusplus	2413	#ifdef __cplusplus
1944	}	2414	}
1945	#endif	2415	#endif
1946		2416

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