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Comparing libev/ev.c (file contents):
Revision 1.140 by root, Mon Nov 26 19:49:36 2007 UTC vs.
Revision 1.183 by root, Wed Dec 12 05:11:56 2007 UTC

…		…
94	# else	94	# else
95	# define EV_USE_PORT 0	95	# define EV_USE_PORT 0
96	# endif	96	# endif
97	# endif	97	# endif
98		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
99	#endif	107	#endif
100		108
101	#include <math.h>	109	#include <math.h>
102	#include <stdlib.h>	110	#include <stdlib.h>
103	#include <fcntl.h>	111	#include <fcntl.h>
…		…
109	#include <errno.h>	117	#include <errno.h>
110	#include <sys/types.h>	118	#include <sys/types.h>
111	#include <time.h>	119	#include <time.h>
112		120
113	#include <signal.h>	121	#include <signal.h>
		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
114		128
115	#ifndef _WIN32	129	#ifndef _WIN32
116	# include <sys/time.h>	130	# include <sys/time.h>
117	# include <sys/wait.h>	131	# include <sys/wait.h>
118	# include <unistd.h>	132	# include <unistd.h>
…		…
156		170
157	#ifndef EV_USE_PORT	171	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	172	# define EV_USE_PORT 0
159	#endif	173	#endif
160		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
		184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		192	# endif
		193	#endif
		194
161	/**/	195	/**/
162		196
163	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
…		…
172		206
173	#if EV_SELECT_IS_WINSOCKET	207	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	208	# include <winsock.h>
175	#endif	209	#endif
176		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
177	/**/	219	/**/
		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 */
178		230
179	#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) */
180	#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) */
181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
182	/*#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 */
183
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189		234
190	#if __GNUC__ >= 3	235	#if __GNUC__ >= 3
191	# define expect(expr,value) __builtin_expect ((expr),(value))	236	# define expect(expr,value) __builtin_expect ((expr),(value))
192	# define inline_size static inline /* inline for codesize */
193	# if EV_MINIMAL
194	# define noinline __attribute__ ((noinline))	237	# define noinline __attribute__ ((noinline))
195	# define inline_speed static noinline
196	# else
197	# define noinline
198	# define inline_speed static inline
199	# endif
200	#else	238	#else
201	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_minimal static
204	# define noinline	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
205	#endif	244	#endif
206		245
207	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
208	#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
209		255
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		258
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
215		261
216	typedef ev_watcher *W;	262	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
…		…
225		271
226	/*****************************************************************************/	272	/*****************************************************************************/
227		273
228	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
229		275
		276	void
230	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
231	{	278	{
232	syserr_cb = cb;	279	syserr_cb = cb;
233	}	280	}
234		281
235	static void	282	static void noinline
236	syserr (const char *msg)	283	syserr (const char *msg)
237	{	284	{
238	if (!msg)	285	if (!msg)
239	msg = "(libev) system error";	286	msg = "(libev) system error";
240		287
…		…
247	}	294	}
248	}	295	}
249		296
250	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
251		298
		299	void
252	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
253	{	301	{
254	alloc = cb;	302	alloc = cb;
255	}	303	}
256		304
257	static void *	305	inline_speed void *
258	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
259	{	307	{
260	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
261		309
262	if (!ptr && size)	310	if (!ptr && size)
…		…
286	typedef struct	334	typedef struct
287	{	335	{
288	W w;	336	W w;
289	int events;	337	int events;
290	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
291		346
292	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
293		348
294	struct ev_loop	349	struct ev_loop
295	{	350	{
…		…
315		370
316	#endif	371	#endif
317		372
318	/*****************************************************************************/	373	/*****************************************************************************/
319		374
320	ev_tstamp noinline	375	ev_tstamp
321	ev_time (void)	376	ev_time (void)
322	{	377	{
323	#if EV_USE_REALTIME	378	#if EV_USE_REALTIME
324	struct timespec ts;	379	struct timespec ts;
325	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
…		…
352	{	407	{
353	return ev_rt_now;	408	return ev_rt_now;
354	}	409	}
355	#endif	410	#endif
356		411
357	#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	}
358		439
359	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
360	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
361	{ \	442	{ \
362	int newcnt = cur; \	443	int ocur_ = (cur); \
363	do \	444	(base) = (type *)array_realloc \
364	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
365	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
366	} \
367	while ((cnt) > newcnt); \
368	\
369	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
370	init (base + cur, newcnt - cur); \
371	cur = newcnt; \
372	}	447	}
373		448
		449	#if 0
374	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
375	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
376	{ \	452	{ \
377	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
378	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
379	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
380	}	456	}
		457	#endif
381		458
382	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
383	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;
		461
		462	/*****************************************************************************/
		463
		464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		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_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
384		489
385	/*****************************************************************************/	490	/*****************************************************************************/
386		491
387	void inline_size	492	void inline_size
388	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
…		…
395		500
396	++base;	501	++base;
397	}	502	}
398	}	503	}
399		504
400	void noinline
401	ev_feed_event (EV_P_ void *w, int revents)
402	{
403	W w_ = (W)w;
404
405	if (expect_false (w_->pending))
406	{
407	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
408	return;
409	}
410
411	w_->pending = ++pendingcnt [ABSPRI (w_)];
412	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
413	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
414	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
415	}
416
417	static void
418	queue_events (EV_P_ W *events, int eventcnt, int type)
419	{
420	int i;
421
422	for (i = 0; i < eventcnt; ++i)
423	ev_feed_event (EV_A_ events [i], type);
424	}
425
426	void inline_speed	505	void inline_speed
427	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
428	{	507	{
429	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
430	ev_io *w;	509	ev_io *w;
…		…
439	}	518	}
440		519
441	void	520	void
442	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
443	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
444	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
445	}	525	}
446
447	/*****************************************************************************/
448		526
449	void inline_size	527	void inline_size
450	fd_reify (EV_P)	528	fd_reify (EV_P)
451	{	529	{
452	int i;	530	int i;
…		…
479		557
480	fdchangecnt = 0;	558	fdchangecnt = 0;
481	}	559	}
482		560
483	void inline_size	561	void inline_size
484	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd, int flags)
485	{	563	{
486	if (expect_false (anfds [fd].reify))	564	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	565	anfds [fd].reify |= flags | 1;
490		566
		567	if (expect_true (!reify))
		568	{
491	++fdchangecnt;	569	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
		572	}
494	}	573	}
495		574
496	void inline_speed	575	void inline_speed
497	fd_kill (EV_P_ int fd)	576	fd_kill (EV_P_ int fd)
498	{	577	{
…		…
545	static void noinline	624	static void noinline
546	fd_rearm_all (EV_P)	625	fd_rearm_all (EV_P)
547	{	626	{
548	int fd;	627	int fd;
549		628
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	629	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	630	if (anfds [fd].events)
553	{	631	{
554	anfds [fd].events = 0;	632	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	633	fd_change (EV_A_ fd, EV_IOFDSET);
556	}	634	}
557	}	635	}
558		636
559	/*****************************************************************************/	637	/*****************************************************************************/
560		638
561	void inline_speed	639	void inline_speed
562	upheap (WT *heap, int k)	640	upheap (WT *heap, int k)
563	{	641	{
564	WT w = heap [k];	642	WT w = heap [k];
565		643
566	while (k && heap [k >> 1]->at > w->at)	644	while (k)
567	{	645	{
		646	int p = (k - 1) >> 1;
		647
		648	if (heap [p]->at <= w->at)
		649	break;
		650
568	heap [k] = heap [k >> 1];	651	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	652	((W)heap [k])->active = k + 1;
570	k >>= 1;	653	k = p;
571	}	654	}
572		655
573	heap [k] = w;	656	heap [k] = w;
574	((W)heap [k])->active = k + 1;	657	((W)heap [k])->active = k + 1;
575
576	}	658	}
577		659
578	void inline_speed	660	void inline_speed
579	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
580	{	662	{
581	WT w = heap [k];	663	WT w = heap [k];
582		664
583	while (k < (N >> 1))	665	for (;;)
584	{	666	{
585	int j = k << 1;	667	int c = (k << 1) + 1;
586		668
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	670	break;
592		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
593	heap [k] = heap [j];	678	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
595	k = j;	681	k = c;
596	}	682	}
597		683
598	heap [k] = w;	684	heap [k] = w;
599	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
600	}	686	}
…		…
682	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
683	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
684	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
685	}	771	}
686		772
687	void inline_size	773	void inline_speed
688	fd_intern (int fd)	774	fd_intern (int fd)
689	{	775	{
690	#ifdef _WIN32	776	#ifdef _WIN32
691	int arg = 1;	777	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
708	}	794	}
709		795
710	/*****************************************************************************/	796	/*****************************************************************************/
711		797
712	static ev_child *childs [PID_HASHSIZE];	798	static WL childs [EV_PID_HASHSIZE];
713		799
714	#ifndef _WIN32	800	#ifndef _WIN32
715		801
716	static ev_signal childev;	802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
		811	{
		812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		813	w->rpid = pid;
		814	w->rstatus = status;
		815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		816	}
		817	}
717		818
718	#ifndef WCONTINUED	819	#ifndef WCONTINUED
719	# define WCONTINUED 0	820	# define WCONTINUED 0
720	#endif	821	#endif
721		822
722	void inline_speed
723	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
724	{
725	ev_child *w;
726
727	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
728	if (w->pid == pid || !w->pid)
729	{
730	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
731	w->rpid = pid;
732	w->rstatus = status;
733	ev_feed_event (EV_A_ (W)w, EV_CHILD);
734	}
735	}
736
737	static void	823	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
739	{	825	{
740	int pid, status;	826	int pid, status;
741		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
744	/* make sure we are called again until all childs have been reaped */	835	/* make sure we are called again until all childs have been reaped */
745	/* we need to do it this way so that the callback gets called before we continue */	836	/* we need to do it this way so that the callback gets called before we continue */
746	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		838
748	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
749	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	842	}
752		843
753	#endif	844	#endif
754		845
755	/*****************************************************************************/	846	/*****************************************************************************/
…		…
838	ev_backend (EV_P)	929	ev_backend (EV_P)
839	{	930	{
840	return backend;	931	return backend;
841	}	932	}
842		933
843	static void	934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
844	loop_init (EV_P_ unsigned int flags)	941	loop_init (EV_P_ unsigned int flags)
845	{	942	{
846	if (!backend)	943	if (!backend)
847	{	944	{
848	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
…		…
856	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	954	mn_now = get_clock ();
858	now_floor = mn_now;	955	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
860		957
		958	/* pid check not overridable via env */
		959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
861	if (!(flags & EVFLAG_NOENV)	964	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	965	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	966	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
865		968
866	if (!(flags & 0x0000ffffUL))	969	if (!(flags & 0x0000ffffUL))
867	flags |= ev_recommended_backends ();	970	flags |= ev_recommended_backends ();
868		971
869	backend = 0;	972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
870	#if EV_USE_PORT	978	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	980	#endif
873	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
886	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
887	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
888	}	996	}
889	}	997	}
890		998
891	static void	999	static void noinline
892	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
893	{	1001	{
894	int i;	1002	int i;
		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
895		1011
896	#if EV_USE_PORT	1012	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1014	#endif
899	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1026	#endif
911		1027
912	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
913	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
914		1035
915	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1037	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1038	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1039	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1040	array_free (periodic, EMPTY);
920	#endif	1041	#endif
921	array_free (idle, EMPTY0);
922	array_free (prepare, EMPTY0);	1042	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1043	array_free (check, EMPTY);
924		1044
925	backend = 0;	1045	backend = 0;
926	}	1046	}
927		1047
928	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
929	loop_fork (EV_P)	1051	loop_fork (EV_P)
930	{	1052	{
931	#if EV_USE_PORT	1053	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1055	#endif
934	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1058	#endif
937	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_INOTIFY
		1063	infy_fork (EV_A);
939	#endif	1064	#endif
940		1065
941	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
942	{	1067	{
943	/* default loop */	1068	/* default loop */
…		…
1059	postfork = 1;	1184	postfork = 1;
1060	}	1185	}
1061		1186
1062	/*****************************************************************************/	1187	/*****************************************************************************/
1063		1188
1064	int inline_size	1189	void
1065	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
1066	{	1191	{
1067	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1193	}
1075		1194
1076	void inline_speed	1195	void inline_speed
1077	call_pending (EV_P)	1196	call_pending (EV_P)
1078	{	1197	{
…		…
1083	{	1202	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1204
1086	if (expect_true (p->w))	1205	if (expect_true (p->w))
1087	{	1206	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1208
1090	p->w->pending = 0;	1209	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
1092	}	1211	}
1093	}	1212	}
…		…
1096	void inline_size	1215	void inline_size
1097	timers_reify (EV_P)	1216	timers_reify (EV_P)
1098	{	1217	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1100	{	1219	{
1101	ev_timer *w = timers [0];	1220	ev_timer *w = (ev_timer *)timers [0];
1102		1221
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1223
1105	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
1106	if (w->repeat)	1225	if (w->repeat)
1107	{	1226	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1228
1110	((WT)w)->at += w->repeat;	1229	((WT)w)->at += w->repeat;
1111	if (((WT)w)->at < mn_now)	1230	if (((WT)w)->at < mn_now)
1112	((WT)w)->at = mn_now;	1231	((WT)w)->at = mn_now;
1113		1232
1114	downheap ((WT *)timers, timercnt, 0);	1233	downheap (timers, timercnt, 0);
1115	}	1234	}
1116	else	1235	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1237
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1124	void inline_size	1243	void inline_size
1125	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
1126	{	1245	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128	{	1247	{
1129	ev_periodic *w = periodics [0];	1248	ev_periodic *w = (ev_periodic *)periodics [0];
1130		1249
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1251
1133	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1135	{	1254	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap (periodics, periodiccnt, 0);
1139	}	1258	}
1140	else if (w->interval)	1259	else if (w->interval)
1141	{	1260	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap (periodics, periodiccnt, 0);
1145	}	1265	}
1146	else	1266	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1268
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1276	int i;
1157		1277
1158	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
1160	{	1280	{
1161	ev_periodic *w = periodics [i];	1281	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1282
1163	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1285	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1287	}
1168		1288
1169	/* now rebuild the heap */	1289	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap (periodics, periodiccnt, i);
1172	}	1292	}
1173	#endif	1293	#endif
1174		1294
		1295	#if EV_IDLE_ENABLE
1175	int inline_size	1296	void inline_size
1176	time_update_monotonic (EV_P)	1297	idle_reify (EV_P)
1177	{	1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
		1304	{
		1305	if (pendingcnt [pri])
		1306	break;
		1307
		1308	if (idlecnt [pri])
		1309	{
		1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1311	break;
		1312	}
		1313	}
		1314	}
		1315	}
		1316	#endif
		1317
		1318	void inline_speed
		1319	time_update (EV_P_ ev_tstamp max_block)
		1320	{
		1321	int i;
		1322
		1323	#if EV_USE_MONOTONIC
		1324	if (expect_true (have_monotonic))
		1325	{
		1326	ev_tstamp odiff = rtmn_diff;
		1327
1178	mn_now = get_clock ();	1328	mn_now = get_clock ();
1179		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1333	{
1182	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1335	return;
1184	}	1336	}
1185	else	1337
1186	{
1187	now_floor = mn_now;	1338	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1340
1193	void inline_size	1341	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1195	{	1343	* in case we get preempted during the calls to
1196	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1197		1345	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1200	{	1348	*/
1201	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1202	{	1350	{
1203	ev_tstamp odiff = rtmn_diff;
1204
1205	/* loop a few times, before making important decisions.
1206	* on the choice of "4": one iteration isn't enough,
1207	* in case we get preempted during the calls to
1208	* ev_time and get_clock. a second call is almost guarenteed
1209	* to succeed in that case, though. and looping a few more times
1210	* doesn't hurt either as we only do this on time-jumps or
1211	* in the unlikely event of getting preempted here.
1212	*/
1213	for (i = 4; --i; )
1214	{
1215	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1216		1352
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1354	return; /* all is well */
1219		1355
1220	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1357	mn_now = get_clock ();
1222	now_floor = mn_now;	1358	now_floor = mn_now;
1223	}	1359	}
1224		1360
1225	# if EV_PERIODIC_ENABLE	1361	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1362	periodics_reschedule (EV_A);
1227	# endif	1363	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1364	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1366	}
1232	else	1367	else
1233	#endif	1368	#endif
1234	{	1369	{
1235	ev_rt_now = ev_time ();	1370	ev_rt_now = ev_time ();
1236		1371
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1373	{
1239	#if EV_PERIODIC_ENABLE	1374	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1241	#endif	1376	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1246	}	1380	}
1247		1381
1248	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1268	{	1402	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270	? EVUNLOOP_ONE	1404	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;	1405	: EVUNLOOP_CANCEL;
1272		1406
1273	while (activecnt)	1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1408
		1409	do
1274	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
1275	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1277	{	1432	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1434	call_pending (EV_A);
1280	}	1435	}
1281		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1282	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1441	if (expect_false (postfork))
1284	loop_fork (EV_A);	1442	loop_fork (EV_A);
1285		1443
1286	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1445	fd_reify (EV_A);
1288		1446
1289	/* calculate blocking time */	1447	/* calculate blocking time */
1290	{	1448	{
1291	double block;	1449	ev_tstamp block;
1292		1450
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1294	block = 0.; /* do not block at all */	1452	block = 0.; /* do not block at all */
1295	else	1453	else
1296	{	1454	{
1297	/* update time to cancel out callback processing overhead */	1455	/* update time to cancel out callback processing overhead */
1298	#if EV_USE_MONOTONIC
1299	if (expect_true (have_monotonic))
1300	time_update_monotonic (EV_A);	1456	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1457
1308	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1309		1459
1310	if (timercnt)	1460	if (timercnt)
1311	{	1461	{
…		…
1322	#endif	1472	#endif
1323		1473
1324	if (expect_false (block < 0.)) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1325	}	1475	}
1326		1476
		1477	++loop_count;
1327	backend_poll (EV_A_ block);	1478	backend_poll (EV_A_ block);
		1479
		1480	/* update ev_rt_now, do magic */
		1481	time_update (EV_A_ block);
1328	}	1482	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1483
1333	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1486	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1488	#endif
1338		1489
		1490	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1491	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1342		1494
1343	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1496	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1498
1347	call_pending (EV_A);	1499	call_pending (EV_A);
1348		1500
1349	if (expect_false (loop_done))
1350	break;
1351	}	1501	}
		1502	while (expect_true (activecnt && !loop_done));
1352		1503
1353	if (loop_done == EVUNLOOP_ONE)	1504	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1505	loop_done = EVUNLOOP_CANCEL;
1355	}	1506	}
1356		1507
…		…
1383	head = &(*head)->next;	1534	head = &(*head)->next;
1384	}	1535	}
1385	}	1536	}
1386		1537
1387	void inline_speed	1538	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1389	{	1540	{
1390	if (w->pending)	1541	if (w->pending)
1391	{	1542	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1544	w->pending = 0;
1394	}	1545	}
1395	}	1546	}
1396		1547
		1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
1397	void inline_speed	1574	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1399	{	1576	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1578	w->active = active;
1404	ev_ref (EV_A);	1579	ev_ref (EV_A);
1405	}	1580	}
1406		1581
1407	void inline_size	1582	void inline_size
…		…
1411	w->active = 0;	1586	w->active = 0;
1412	}	1587	}
1413		1588
1414	/*****************************************************************************/	1589	/*****************************************************************************/
1415		1590
1416	void	1591	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1418	{	1593	{
1419	int fd = w->fd;	1594	int fd = w->fd;
1420		1595
1421	if (expect_false (ev_is_active (w)))	1596	if (expect_false (ev_is_active (w)))
…		…
1423		1598
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1600
1426	ev_start (EV_A_ (W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add (&anfds[fd].head, (WL)w);
1429		1604
1430	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd, w->events & EV_IOFDSET);
		1606	w->events &= ~ EV_IOFDSET;
1431	}	1607	}
1432		1608
1433	void	1609	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1610	ev_io_stop (EV_P_ ev_io *w)
1435	{	1611	{
1436	ev_clear_pending (EV_A_ (W)w);	1612	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1613	if (expect_false (!ev_is_active (w)))
1438	return;	1614	return;
1439		1615
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1616	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1617
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1618	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1619	ev_stop (EV_A_ (W)w);
1444		1620
1445	fd_change (EV_A_ w->fd);	1621	fd_change (EV_A_ w->fd, 0);
1446	}	1622	}
1447		1623
1448	void	1624	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1625	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1626	{
1451	if (expect_false (ev_is_active (w)))	1627	if (expect_false (ev_is_active (w)))
1452	return;	1628	return;
1453		1629
1454	((WT)w)->at += mn_now;	1630	((WT)w)->at += mn_now;
1455		1631
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1632	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1633
1458	ev_start (EV_A_ (W)w, ++timercnt);	1634	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1635	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1460	timers [timercnt - 1] = w;	1636	timers [timercnt - 1] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1637	upheap (timers, timercnt - 1);
1462		1638
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464	}	1640	}
1465		1641
1466	void	1642	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1643	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1644	{
1469	ev_clear_pending (EV_A_ (W)w);	1645	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1646	if (expect_false (!ev_is_active (w)))
1471	return;	1647	return;
1472		1648
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1649	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1474		1650
		1651	{
		1652	int active = ((W)w)->active;
		1653
1475	if (expect_true (((W)w)->active < timercnt--))	1654	if (expect_true (--active < --timercnt))
1476	{	1655	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1656	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1657	adjustheap (timers, timercnt, active);
1479	}	1658	}
		1659	}
1480		1660
1481	((WT)w)->at -= mn_now;	1661	((WT)w)->at -= mn_now;
1482		1662
1483	ev_stop (EV_A_ (W)w);	1663	ev_stop (EV_A_ (W)w);
1484	}	1664	}
1485		1665
1486	void	1666	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1667	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1668	{
1489	if (ev_is_active (w))	1669	if (ev_is_active (w))
1490	{	1670	{
1491	if (w->repeat)	1671	if (w->repeat)
1492	{	1672	{
1493	((WT)w)->at = mn_now + w->repeat;	1673	((WT)w)->at = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1674	adjustheap (timers, timercnt, ((W)w)->active - 1);
1495	}	1675	}
1496	else	1676	else
1497	ev_timer_stop (EV_A_ w);	1677	ev_timer_stop (EV_A_ w);
1498	}	1678	}
1499	else if (w->repeat)	1679	else if (w->repeat)
…		…
1502	ev_timer_start (EV_A_ w);	1682	ev_timer_start (EV_A_ w);
1503	}	1683	}
1504	}	1684	}
1505		1685
1506	#if EV_PERIODIC_ENABLE	1686	#if EV_PERIODIC_ENABLE
1507	void	1687	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1688	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1689	{
1510	if (expect_false (ev_is_active (w)))	1690	if (expect_false (ev_is_active (w)))
1511	return;	1691	return;
1512		1692
…		…
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1694	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1695	else if (w->interval)
1516	{	1696	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1697	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518	/* this formula differs from the one in periodic_reify because we do not always round up */	1698	/* this formula differs from the one in periodic_reify because we do not always round up */
1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1699	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1700	}
		1701	else
		1702	((WT)w)->at = w->offset;
1521		1703
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1704	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1705	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1706	periodics [periodiccnt - 1] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1707	upheap (periodics, periodiccnt - 1);
1526		1708
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1710	}
1529		1711
1530	void	1712	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1713	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1714	{
1533	ev_clear_pending (EV_A_ (W)w);	1715	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1716	if (expect_false (!ev_is_active (w)))
1535	return;	1717	return;
1536		1718
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1719	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1538		1720
		1721	{
		1722	int active = ((W)w)->active;
		1723
1539	if (expect_true (((W)w)->active < periodiccnt--))	1724	if (expect_true (--active < --periodiccnt))
1540	{	1725	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1726	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1727	adjustheap (periodics, periodiccnt, active);
1543	}	1728	}
		1729	}
1544		1730
1545	ev_stop (EV_A_ (W)w);	1731	ev_stop (EV_A_ (W)w);
1546	}	1732	}
1547		1733
1548	void	1734	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	1735	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	1736	{
1551	/* TODO: use adjustheap and recalculation */	1737	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	1738	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	1739	ev_periodic_start (EV_A_ w);
1554	}	1740	}
1555	#endif	1741	#endif
1556		1742
1557	void
1558	ev_idle_start (EV_P_ ev_idle *w)
1559	{
1560	if (expect_false (ev_is_active (w)))
1561	return;
1562
1563	ev_start (EV_A_ (W)w, ++idlecnt);
1564	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1565	idles [idlecnt - 1] = w;
1566	}
1567
1568	void
1569	ev_idle_stop (EV_P_ ev_idle *w)
1570	{
1571	ev_clear_pending (EV_A_ (W)w);
1572	if (expect_false (!ev_is_active (w)))
1573	return;
1574
1575	{
1576	int active = ((W)w)->active;
1577	idles [active - 1] = idles [--idlecnt];
1578	((W)idles [active - 1])->active = active;
1579	}
1580
1581	ev_stop (EV_A_ (W)w);
1582	}
1583
1584	void
1585	ev_prepare_start (EV_P_ ev_prepare *w)
1586	{
1587	if (expect_false (ev_is_active (w)))
1588	return;
1589
1590	ev_start (EV_A_ (W)w, ++preparecnt);
1591	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1592	prepares [preparecnt - 1] = w;
1593	}
1594
1595	void
1596	ev_prepare_stop (EV_P_ ev_prepare *w)
1597	{
1598	ev_clear_pending (EV_A_ (W)w);
1599	if (expect_false (!ev_is_active (w)))
1600	return;
1601
1602	{
1603	int active = ((W)w)->active;
1604	prepares [active - 1] = prepares [--preparecnt];
1605	((W)prepares [active - 1])->active = active;
1606	}
1607
1608	ev_stop (EV_A_ (W)w);
1609	}
1610
1611	void
1612	ev_check_start (EV_P_ ev_check *w)
1613	{
1614	if (expect_false (ev_is_active (w)))
1615	return;
1616
1617	ev_start (EV_A_ (W)w, ++checkcnt);
1618	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1619	checks [checkcnt - 1] = w;
1620	}
1621
1622	void
1623	ev_check_stop (EV_P_ ev_check *w)
1624	{
1625	ev_clear_pending (EV_A_ (W)w);
1626	if (expect_false (!ev_is_active (w)))
1627	return;
1628
1629	{
1630	int active = ((W)w)->active;
1631	checks [active - 1] = checks [--checkcnt];
1632	((W)checks [active - 1])->active = active;
1633	}
1634
1635	ev_stop (EV_A_ (W)w);
1636	}
1637
1638	#ifndef SA_RESTART	1743	#ifndef SA_RESTART
1639	# define SA_RESTART 0	1744	# define SA_RESTART 0
1640	#endif	1745	#endif
1641		1746
1642	void	1747	void noinline
1643	ev_signal_start (EV_P_ ev_signal *w)	1748	ev_signal_start (EV_P_ ev_signal *w)
1644	{	1749	{
1645	#if EV_MULTIPLICITY	1750	#if EV_MULTIPLICITY
1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1751	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647	#endif	1752	#endif
1648	if (expect_false (ev_is_active (w)))	1753	if (expect_false (ev_is_active (w)))
1649	return;	1754	return;
1650		1755
1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1756	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652		1757
		1758	{
		1759	#ifndef _WIN32
		1760	sigset_t full, prev;
		1761	sigfillset (&full);
		1762	sigprocmask (SIG_SETMASK, &full, &prev);
		1763	#endif
		1764
		1765	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1766
		1767	#ifndef _WIN32
		1768	sigprocmask (SIG_SETMASK, &prev, 0);
		1769	#endif
		1770	}
		1771
1653	ev_start (EV_A_ (W)w, 1);	1772	ev_start (EV_A_ (W)w, 1);
1654	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1655	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_add (&signals [w->signum - 1].head, (WL)w);
1656		1774
1657	if (!((WL)w)->next)	1775	if (!((WL)w)->next)
1658	{	1776	{
1659	#if _WIN32	1777	#if _WIN32
1660	signal (w->signum, sighandler);	1778	signal (w->signum, sighandler);
…		…
1666	sigaction (w->signum, &sa, 0);	1784	sigaction (w->signum, &sa, 0);
1667	#endif	1785	#endif
1668	}	1786	}
1669	}	1787	}
1670		1788
1671	void	1789	void noinline
1672	ev_signal_stop (EV_P_ ev_signal *w)	1790	ev_signal_stop (EV_P_ ev_signal *w)
1673	{	1791	{
1674	ev_clear_pending (EV_A_ (W)w);	1792	clear_pending (EV_A_ (W)w);
1675	if (expect_false (!ev_is_active (w)))	1793	if (expect_false (!ev_is_active (w)))
1676	return;	1794	return;
1677		1795
1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1796	wlist_del (&signals [w->signum - 1].head, (WL)w);
1679	ev_stop (EV_A_ (W)w);	1797	ev_stop (EV_A_ (W)w);
1680		1798
1681	if (!signals [w->signum - 1].head)	1799	if (!signals [w->signum - 1].head)
1682	signal (w->signum, SIG_DFL);	1800	signal (w->signum, SIG_DFL);
1683	}	1801	}
…		…
1690	#endif	1808	#endif
1691	if (expect_false (ev_is_active (w)))	1809	if (expect_false (ev_is_active (w)))
1692	return;	1810	return;
1693		1811
1694	ev_start (EV_A_ (W)w, 1);	1812	ev_start (EV_A_ (W)w, 1);
1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1813	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696	}	1814	}
1697		1815
1698	void	1816	void
1699	ev_child_stop (EV_P_ ev_child *w)	1817	ev_child_stop (EV_P_ ev_child *w)
1700	{	1818	{
1701	ev_clear_pending (EV_A_ (W)w);	1819	clear_pending (EV_A_ (W)w);
1702	if (expect_false (!ev_is_active (w)))	1820	if (expect_false (!ev_is_active (w)))
1703	return;	1821	return;
1704		1822
1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1823	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1824	ev_stop (EV_A_ (W)w);
		1825	}
		1826
		1827	#if EV_STAT_ENABLE
		1828
		1829	# ifdef _WIN32
		1830	# undef lstat
		1831	# define lstat(a,b) _stati64 (a,b)
		1832	# endif
		1833
		1834	#define DEF_STAT_INTERVAL 5.0074891
		1835	#define MIN_STAT_INTERVAL 0.1074891
		1836
		1837	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1838
		1839	#if EV_USE_INOTIFY
		1840	# define EV_INOTIFY_BUFSIZE 8192
		1841
		1842	static void noinline
		1843	infy_add (EV_P_ ev_stat *w)
		1844	{
		1845	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);
		1846
		1847	if (w->wd < 0)
		1848	{
		1849	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1850
		1851	/* monitor some parent directory for speedup hints */
		1852	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1853	{
		1854	char path [4096];
		1855	strcpy (path, w->path);
		1856
		1857	do
		1858	{
		1859	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1860	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1861
		1862	char *pend = strrchr (path, '/');
		1863
		1864	if (!pend)
		1865	break; /* whoops, no '/', complain to your admin */
		1866
		1867	*pend = 0;
		1868	w->wd = inotify_add_watch (fs_fd, path, mask);
		1869	}
		1870	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1871	}
		1872	}
		1873	else
		1874	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1875
		1876	if (w->wd >= 0)
		1877	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1878	}
		1879
		1880	static void noinline
		1881	infy_del (EV_P_ ev_stat *w)
		1882	{
		1883	int slot;
		1884	int wd = w->wd;
		1885
		1886	if (wd < 0)
		1887	return;
		1888
		1889	w->wd = -2;
		1890	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1891	wlist_del (&fs_hash [slot].head, (WL)w);
		1892
		1893	/* remove this watcher, if others are watching it, they will rearm */
		1894	inotify_rm_watch (fs_fd, wd);
		1895	}
		1896
		1897	static void noinline
		1898	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1899	{
		1900	if (slot < 0)
		1901	/* overflow, need to check for all hahs slots */
		1902	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1903	infy_wd (EV_A_ slot, wd, ev);
		1904	else
		1905	{
		1906	WL w_;
		1907
		1908	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1909	{
		1910	ev_stat *w = (ev_stat *)w_;
		1911	w_ = w_->next; /* lets us remove this watcher and all before it */
		1912
		1913	if (w->wd == wd || wd == -1)
		1914	{
		1915	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1916	{
		1917	w->wd = -1;
		1918	infy_add (EV_A_ w); /* re-add, no matter what */
		1919	}
		1920
		1921	stat_timer_cb (EV_A_ &w->timer, 0);
		1922	}
		1923	}
		1924	}
		1925	}
		1926
		1927	static void
		1928	infy_cb (EV_P_ ev_io *w, int revents)
		1929	{
		1930	char buf [EV_INOTIFY_BUFSIZE];
		1931	struct inotify_event *ev = (struct inotify_event *)buf;
		1932	int ofs;
		1933	int len = read (fs_fd, buf, sizeof (buf));
		1934
		1935	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1936	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1937	}
		1938
		1939	void inline_size
		1940	infy_init (EV_P)
		1941	{
		1942	if (fs_fd != -2)
		1943	return;
		1944
		1945	fs_fd = inotify_init ();
		1946
		1947	if (fs_fd >= 0)
		1948	{
		1949	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1950	ev_set_priority (&fs_w, EV_MAXPRI);
		1951	ev_io_start (EV_A_ &fs_w);
		1952	}
		1953	}
		1954
		1955	void inline_size
		1956	infy_fork (EV_P)
		1957	{
		1958	int slot;
		1959
		1960	if (fs_fd < 0)
		1961	return;
		1962
		1963	close (fs_fd);
		1964	fs_fd = inotify_init ();
		1965
		1966	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1967	{
		1968	WL w_ = fs_hash [slot].head;
		1969	fs_hash [slot].head = 0;
		1970
		1971	while (w_)
		1972	{
		1973	ev_stat *w = (ev_stat *)w_;
		1974	w_ = w_->next; /* lets us add this watcher */
		1975
		1976	w->wd = -1;
		1977
		1978	if (fs_fd >= 0)
		1979	infy_add (EV_A_ w); /* re-add, no matter what */
		1980	else
		1981	ev_timer_start (EV_A_ &w->timer);
		1982	}
		1983
		1984	}
		1985	}
		1986
		1987	#endif
		1988
		1989	void
		1990	ev_stat_stat (EV_P_ ev_stat *w)
		1991	{
		1992	if (lstat (w->path, &w->attr) < 0)
		1993	w->attr.st_nlink = 0;
		1994	else if (!w->attr.st_nlink)
		1995	w->attr.st_nlink = 1;
		1996	}
		1997
		1998	static void noinline
		1999	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2000	{
		2001	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2002
		2003	/* we copy this here each the time so that */
		2004	/* prev has the old value when the callback gets invoked */
		2005	w->prev = w->attr;
		2006	ev_stat_stat (EV_A_ w);
		2007
		2008	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2009	if (
		2010	w->prev.st_dev != w->attr.st_dev
		2011	|| w->prev.st_ino != w->attr.st_ino
		2012	|| w->prev.st_mode != w->attr.st_mode
		2013	|| w->prev.st_nlink != w->attr.st_nlink
		2014	|| w->prev.st_uid != w->attr.st_uid
		2015	|| w->prev.st_gid != w->attr.st_gid
		2016	|| w->prev.st_rdev != w->attr.st_rdev
		2017	|| w->prev.st_size != w->attr.st_size
		2018	|| w->prev.st_atime != w->attr.st_atime
		2019	|| w->prev.st_mtime != w->attr.st_mtime
		2020	|| w->prev.st_ctime != w->attr.st_ctime
		2021	) {
		2022	#if EV_USE_INOTIFY
		2023	infy_del (EV_A_ w);
		2024	infy_add (EV_A_ w);
		2025	ev_stat_stat (EV_A_ w); /* avoid race... */
		2026	#endif
		2027
		2028	ev_feed_event (EV_A_ w, EV_STAT);
		2029	}
		2030	}
		2031
		2032	void
		2033	ev_stat_start (EV_P_ ev_stat *w)
		2034	{
		2035	if (expect_false (ev_is_active (w)))
		2036	return;
		2037
		2038	/* since we use memcmp, we need to clear any padding data etc. */
		2039	memset (&w->prev, 0, sizeof (ev_statdata));
		2040	memset (&w->attr, 0, sizeof (ev_statdata));
		2041
		2042	ev_stat_stat (EV_A_ w);
		2043
		2044	if (w->interval < MIN_STAT_INTERVAL)
		2045	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2046
		2047	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2048	ev_set_priority (&w->timer, ev_priority (w));
		2049
		2050	#if EV_USE_INOTIFY
		2051	infy_init (EV_A);
		2052
		2053	if (fs_fd >= 0)
		2054	infy_add (EV_A_ w);
		2055	else
		2056	#endif
		2057	ev_timer_start (EV_A_ &w->timer);
		2058
		2059	ev_start (EV_A_ (W)w, 1);
		2060	}
		2061
		2062	void
		2063	ev_stat_stop (EV_P_ ev_stat *w)
		2064	{
		2065	clear_pending (EV_A_ (W)w);
		2066	if (expect_false (!ev_is_active (w)))
		2067	return;
		2068
		2069	#if EV_USE_INOTIFY
		2070	infy_del (EV_A_ w);
		2071	#endif
		2072	ev_timer_stop (EV_A_ &w->timer);
		2073
		2074	ev_stop (EV_A_ (W)w);
		2075	}
		2076	#endif
		2077
		2078	#if EV_IDLE_ENABLE
		2079	void
		2080	ev_idle_start (EV_P_ ev_idle *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	pri_adjust (EV_A_ (W)w);
		2086
		2087	{
		2088	int active = ++idlecnt [ABSPRI (w)];
		2089
		2090	++idleall;
		2091	ev_start (EV_A_ (W)w, active);
		2092
		2093	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2094	idles [ABSPRI (w)][active - 1] = w;
		2095	}
		2096	}
		2097
		2098	void
		2099	ev_idle_stop (EV_P_ ev_idle *w)
		2100	{
		2101	clear_pending (EV_A_ (W)w);
		2102	if (expect_false (!ev_is_active (w)))
		2103	return;
		2104
		2105	{
		2106	int active = ((W)w)->active;
		2107
		2108	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2109	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2110
		2111	ev_stop (EV_A_ (W)w);
		2112	--idleall;
		2113	}
		2114	}
		2115	#endif
		2116
		2117	void
		2118	ev_prepare_start (EV_P_ ev_prepare *w)
		2119	{
		2120	if (expect_false (ev_is_active (w)))
		2121	return;
		2122
		2123	ev_start (EV_A_ (W)w, ++preparecnt);
		2124	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2125	prepares [preparecnt - 1] = w;
		2126	}
		2127
		2128	void
		2129	ev_prepare_stop (EV_P_ ev_prepare *w)
		2130	{
		2131	clear_pending (EV_A_ (W)w);
		2132	if (expect_false (!ev_is_active (w)))
		2133	return;
		2134
		2135	{
		2136	int active = ((W)w)->active;
		2137	prepares [active - 1] = prepares [--preparecnt];
		2138	((W)prepares [active - 1])->active = active;
		2139	}
		2140
		2141	ev_stop (EV_A_ (W)w);
		2142	}
		2143
		2144	void
		2145	ev_check_start (EV_P_ ev_check *w)
		2146	{
		2147	if (expect_false (ev_is_active (w)))
		2148	return;
		2149
		2150	ev_start (EV_A_ (W)w, ++checkcnt);
		2151	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2152	checks [checkcnt - 1] = w;
		2153	}
		2154
		2155	void
		2156	ev_check_stop (EV_P_ ev_check *w)
		2157	{
		2158	clear_pending (EV_A_ (W)w);
		2159	if (expect_false (!ev_is_active (w)))
		2160	return;
		2161
		2162	{
		2163	int active = ((W)w)->active;
		2164	checks [active - 1] = checks [--checkcnt];
		2165	((W)checks [active - 1])->active = active;
		2166	}
		2167
1706	ev_stop (EV_A_ (W)w);	2168	ev_stop (EV_A_ (W)w);
1707	}	2169	}
1708		2170
1709	#if EV_EMBED_ENABLE	2171	#if EV_EMBED_ENABLE
1710	void noinline	2172	void noinline
…		…
1743	}	2205	}
1744		2206
1745	void	2207	void
1746	ev_embed_stop (EV_P_ ev_embed *w)	2208	ev_embed_stop (EV_P_ ev_embed *w)
1747	{	2209	{
1748	ev_clear_pending (EV_A_ (W)w);	2210	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2211	if (expect_false (!ev_is_active (w)))
1750	return;	2212	return;
1751		2213
1752	ev_io_stop (EV_A_ &w->io);	2214	ev_io_stop (EV_A_ &w->io);
1753		2215
1754	ev_stop (EV_A_ (W)w);	2216	ev_stop (EV_A_ (W)w);
1755	}	2217	}
1756	#endif	2218	#endif
1757		2219
1758	#if EV_STAT_ENABLE	2220	#if EV_FORK_ENABLE
1759
1760	# ifdef _WIN32
1761	# define lstat(a,b) stat(a,b)
1762	# endif
1763
1764	void	2221	void
1765	ev_stat_stat (EV_P_ ev_stat *w)
1766	{
1767	if (lstat (w->path, &w->attr) < 0)
1768	w->attr.st_nlink = 0;
1769	else if (!w->attr.st_nlink)
1770	w->attr.st_nlink = 1;
1771	}
1772
1773	static void
1774	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1775	{
1776	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1777
1778	/* we copy this here each the time so that */
1779	/* prev has the old value when the callback gets invoked */
1780	w->prev = w->attr;
1781	ev_stat_stat (EV_A_ w);
1782
1783	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
1784	ev_feed_event (EV_A_ w, EV_STAT);
1785	}
1786
1787	void
1788	ev_stat_start (EV_P_ ev_stat *w)	2222	ev_fork_start (EV_P_ ev_fork *w)
1789	{	2223	{
1790	if (expect_false (ev_is_active (w)))	2224	if (expect_false (ev_is_active (w)))
1791	return;	2225	return;
1792		2226
1793	/* since we use memcmp, we need to clear any padding data etc. */
1794	memset (&w->prev, 0, sizeof (ev_statdata));
1795	memset (&w->attr, 0, sizeof (ev_statdata));
1796
1797	ev_stat_stat (EV_A_ w);
1798
1799	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1800	ev_set_priority (&w->timer, ev_priority (w));
1801	ev_timer_start (EV_A_ &w->timer);
1802
1803	ev_start (EV_A_ (W)w, 1);	2227	ev_start (EV_A_ (W)w, ++forkcnt);
		2228	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2229	forks [forkcnt - 1] = w;
1804	}	2230	}
1805		2231
1806	void	2232	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2233	ev_fork_stop (EV_P_ ev_fork *w)
1808	{	2234	{
1809	ev_clear_pending (EV_A_ (W)w);	2235	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2236	if (expect_false (!ev_is_active (w)))
1811	return;	2237	return;
1812		2238
1813	ev_timer_stop (EV_A_ &w->timer);	2239	{
		2240	int active = ((W)w)->active;
		2241	forks [active - 1] = forks [--forkcnt];
		2242	((W)forks [active - 1])->active = active;
		2243	}
1814		2244
1815	ev_stop (EV_A_ (W)w);	2245	ev_stop (EV_A_ (W)w);
1816	}	2246	}
1817	#endif	2247	#endif
1818		2248

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