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Comparing libev/ev.c (file contents):
Revision 1.139 by root, Sun Nov 25 09:24:37 2007 UTC vs.
Revision 1.180 by root, Tue Dec 11 22:04:55 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>
…		…
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>
114		122
		123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
115	#ifndef _WIN32	129	#ifndef _WIN32
116	# include <unistd.h>
117	# include <sys/time.h>	130	# include <sys/time.h>
118	# include <sys/wait.h>	131	# include <sys/wait.h>
		132	# include <unistd.h>
119	#else	133	#else
120	# define WIN32_LEAN_AND_MEAN	134	# define WIN32_LEAN_AND_MEAN
121	# include <windows.h>	135	# include <windows.h>
122	# ifndef EV_SELECT_IS_WINSOCKET	136	# ifndef EV_SELECT_IS_WINSOCKET
123	# define EV_SELECT_IS_WINSOCKET 1	137	# define EV_SELECT_IS_WINSOCKET 1
…		…
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 static inline	237	# define noinline __attribute__ ((noinline))
193	#else	238	#else
194	# define expect(expr,value) (expr)	239	# define expect(expr,value) (expr)
195	# define inline static	240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
196	#endif	244	#endif
197		245
198	#define expect_false(expr) expect ((expr) != 0, 0)	246	#define expect_false(expr) expect ((expr) != 0, 0)
199	#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
200		255
201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
203		258
204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
205	#define EMPTY2(a,b) /* used to suppress some warnings */	260	#define EMPTY2(a,b) /* used to suppress some warnings */
206		261
207	typedef ev_watcher *W;	262	typedef ev_watcher *W;
208	typedef ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
209	typedef ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
…		…
216		271
217	/*****************************************************************************/	272	/*****************************************************************************/
218		273
219	static void (*syserr_cb)(const char *msg);	274	static void (*syserr_cb)(const char *msg);
220		275
		276	void
221	void ev_set_syserr_cb (void (*cb)(const char *msg))	277	ev_set_syserr_cb (void (*cb)(const char *msg))
222	{	278	{
223	syserr_cb = cb;	279	syserr_cb = cb;
224	}	280	}
225		281
226	static void	282	static void noinline
227	syserr (const char *msg)	283	syserr (const char *msg)
228	{	284	{
229	if (!msg)	285	if (!msg)
230	msg = "(libev) system error";	286	msg = "(libev) system error";
231		287
…		…
238	}	294	}
239	}	295	}
240		296
241	static void *(*alloc)(void *ptr, long size);	297	static void *(*alloc)(void *ptr, long size);
242		298
		299	void
243	void ev_set_allocator (void *(*cb)(void *ptr, long size))	300	ev_set_allocator (void *(*cb)(void *ptr, long size))
244	{	301	{
245	alloc = cb;	302	alloc = cb;
246	}	303	}
247		304
248	static void *	305	inline_speed void *
249	ev_realloc (void *ptr, long size)	306	ev_realloc (void *ptr, long size)
250	{	307	{
251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
252		309
253	if (!ptr && size)	310	if (!ptr && size)
…		…
277	typedef struct	334	typedef struct
278	{	335	{
279	W w;	336	W w;
280	int events;	337	int events;
281	} ANPENDING;	338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
282		346
283	#if EV_MULTIPLICITY	347	#if EV_MULTIPLICITY
284		348
285	struct ev_loop	349	struct ev_loop
286	{	350	{
…		…
320	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
321	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
322	#endif	386	#endif
323	}	387	}
324		388
325	inline ev_tstamp	389	ev_tstamp inline_size
326	get_clock (void)	390	get_clock (void)
327	{	391	{
328	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
329	if (expect_true (have_monotonic))	393	if (expect_true (have_monotonic))
330	{	394	{
…		…
343	{	407	{
344	return ev_rt_now;	408	return ev_rt_now;
345	}	409	}
346	#endif	410	#endif
347		411
348	#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	}
349		439
350	#define array_needsize(type,base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
351	if (expect_false ((cnt) > cur)) \	441	if (expect_false ((cnt) > (cur))) \
352	{ \	442	{ \
353	int newcnt = cur; \	443	int ocur_ = (cur); \
354	do \	444	(base) = (type *)array_realloc \
355	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
356	newcnt = array_roundsize (type, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
357	} \
358	while ((cnt) > newcnt); \
359	\
360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
361	init (base + cur, newcnt - cur); \
362	cur = newcnt; \
363	}	447	}
364		448
		449	#if 0
365	#define array_slim(type,stem) \	450	#define array_slim(type,stem) \
366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
367	{ \	452	{ \
368	stem ## max = array_roundsize (stem ## cnt >> 1); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
371	}	456	}
		457	#endif
372		458
373	#define array_free(stem, idx) \	459	#define array_free(stem, idx) \
374	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;
375		461
376	/*****************************************************************************/	462	/*****************************************************************************/
377		463
378	static void	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	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
379	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
380	{	494	{
381	while (count--)	495	while (count--)
382	{	496	{
383	base->head = 0;	497	base->head = 0;
…		…
386		500
387	++base;	501	++base;
388	}	502	}
389	}	503	}
390		504
391	void	505	void inline_speed
392	ev_feed_event (EV_P_ void *w, int revents)
393	{
394	W w_ = (W)w;
395
396	if (expect_false (w_->pending))
397	{
398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
399	return;
400	}
401
402	w_->pending = ++pendingcnt [ABSPRI (w_)];
403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
406	}
407
408	static void
409	queue_events (EV_P_ W *events, int eventcnt, int type)
410	{
411	int i;
412
413	for (i = 0; i < eventcnt; ++i)
414	ev_feed_event (EV_A_ events [i], type);
415	}
416
417	inline void
418	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
419	{	507	{
420	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
421	ev_io *w;	509	ev_io *w;
422		510
…		…
430	}	518	}
431		519
432	void	520	void
433	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
434	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
435	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
436	}	525	}
437		526
438	/*****************************************************************************/	527	void inline_size
439
440	inline void
441	fd_reify (EV_P)	528	fd_reify (EV_P)
442	{	529	{
443	int i;	530	int i;
444		531
445	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
…		…
469	}	556	}
470		557
471	fdchangecnt = 0;	558	fdchangecnt = 0;
472	}	559	}
473		560
474	static void	561	void inline_size
475	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
476	{	563	{
477	if (expect_false (anfds [fd].reify))	564	if (expect_false (anfds [fd].reify))
478	return;	565	return;
479		566
…		…
482	++fdchangecnt;	569	++fdchangecnt;
483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
484	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
485	}	572	}
486		573
487	static void	574	void inline_speed
488	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
489	{	576	{
490	ev_io *w;	577	ev_io *w;
491		578
492	while ((w = (ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
…		…
494	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
496	}	583	}
497	}	584	}
498		585
499	inline int	586	int inline_size
500	fd_valid (int fd)	587	fd_valid (int fd)
501	{	588	{
502	#ifdef _WIN32	589	#ifdef _WIN32
503	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
504	#else	591	#else
505	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
506	#endif	593	#endif
507	}	594	}
508		595
509	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
510	static void	597	static void noinline
511	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
512	{	599	{
513	int fd;	600	int fd;
514		601
515	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
517	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
518	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
519	}	606	}
520		607
521	/* called on ENOMEM in select/poll to kill some fds and retry */	608	/* called on ENOMEM in select/poll to kill some fds and retry */
522	static void	609	static void noinline
523	fd_enomem (EV_P)	610	fd_enomem (EV_P)
524	{	611	{
525	int fd;	612	int fd;
526		613
527	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
531	return;	618	return;
532	}	619	}
533	}	620	}
534		621
535	/* usually called after fork if backend needs to re-arm all fds from scratch */	622	/* usually called after fork if backend needs to re-arm all fds from scratch */
536	static void	623	static void noinline
537	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
538	{	625	{
539	int fd;	626	int fd;
540		627
541	/* this should be highly optimised to not do anything but set a flag */
542	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
543	if (anfds [fd].events)	629	if (anfds [fd].events)
544	{	630	{
545	anfds [fd].events = 0;	631	anfds [fd].events = 0;
546	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
547	}	633	}
548	}	634	}
549		635
550	/*****************************************************************************/	636	/*****************************************************************************/
551		637
552	static void	638	void inline_speed
553	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
554	{	640	{
555	WT w = heap [k];	641	WT w = heap [k];
556		642
557	while (k && heap [k >> 1]->at > w->at)	643	while (k)
558	{	644	{
		645	int p = (k - 1) >> 1;
		646
		647	if (heap [p]->at <= w->at)
		648	break;
		649
559	heap [k] = heap [k >> 1];	650	heap [k] = heap [p];
560	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
561	k >>= 1;	652	k = p;
562	}	653	}
563		654
564	heap [k] = w;	655	heap [k] = w;
565	((W)heap [k])->active = k + 1;	656	((W)heap [k])->active = k + 1;
566		657
567	}	658	}
568		659
569	static void	660	void inline_speed
570	downheap (WT *heap, int N, int k)	661	downheap (WT *heap, int N, int k)
571	{	662	{
572	WT w = heap [k];	663	WT w = heap [k];
573		664
574	while (k < (N >> 1))	665	for (;;)
575	{	666	{
576	int j = k << 1;	667	int c = (k << 1) + 1;
577		668
578	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	669	if (c >= N)
579	++j;
580
581	if (w->at <= heap [j]->at)
582	break;	670	break;
583		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
584	heap [k] = heap [j];	678	heap [k] = heap [c];
585	((W)heap [k])->active = k + 1;	679	((W)heap [k])->active = k + 1;
		680
586	k = j;	681	k = c;
587	}	682	}
588		683
589	heap [k] = w;	684	heap [k] = w;
590	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
591	}	686	}
592		687
593	inline void	688	void inline_size
594	adjustheap (WT *heap, int N, int k)	689	adjustheap (WT *heap, int N, int k)
595	{	690	{
596	upheap (heap, k);	691	upheap (heap, k);
597	downheap (heap, N, k);	692	downheap (heap, N, k);
598	}	693	}
…		…
610		705
611	static int sigpipe [2];	706	static int sigpipe [2];
612	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
613	static ev_io sigev;	708	static ev_io sigev;
614		709
615	static void	710	void inline_size
616	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
617	{	712	{
618	while (count--)	713	while (count--)
619	{	714	{
620	base->head = 0;	715	base->head = 0;
…		…
640	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
641	errno = old_errno;	736	errno = old_errno;
642	}	737	}
643	}	738	}
644		739
645	void	740	void noinline
646	ev_feed_signal_event (EV_P_ int signum)	741	ev_feed_signal_event (EV_P_ int signum)
647	{	742	{
648	WL w;	743	WL w;
649		744
650	#if EV_MULTIPLICITY	745	#if EV_MULTIPLICITY
…		…
673	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
674	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
675	ev_feed_signal_event (EV_A_ signum + 1);	770	ev_feed_signal_event (EV_A_ signum + 1);
676	}	771	}
677		772
678	static void	773	void inline_speed
679	fd_intern (int fd)	774	fd_intern (int fd)
680	{	775	{
681	#ifdef _WIN32	776	#ifdef _WIN32
682	int arg = 1;	777	int arg = 1;
683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
685	fcntl (fd, F_SETFD, FD_CLOEXEC);	780	fcntl (fd, F_SETFD, FD_CLOEXEC);
686	fcntl (fd, F_SETFL, O_NONBLOCK);	781	fcntl (fd, F_SETFL, O_NONBLOCK);
687	#endif	782	#endif
688	}	783	}
689		784
690	static void	785	static void noinline
691	siginit (EV_P)	786	siginit (EV_P)
692	{	787	{
693	fd_intern (sigpipe [0]);	788	fd_intern (sigpipe [0]);
694	fd_intern (sigpipe [1]);	789	fd_intern (sigpipe [1]);
695		790
…		…
698	ev_unref (EV_A); /* child watcher should not keep loop alive */	793	ev_unref (EV_A); /* child watcher should not keep loop alive */
699	}	794	}
700		795
701	/*****************************************************************************/	796	/*****************************************************************************/
702		797
703	static ev_child *childs [PID_HASHSIZE];	798	static ev_child *childs [EV_PID_HASHSIZE];
704		799
705	#ifndef _WIN32	800	#ifndef _WIN32
706		801
707	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	}
708		818
709	#ifndef WCONTINUED	819	#ifndef WCONTINUED
710	# define WCONTINUED 0	820	# define WCONTINUED 0
711	#endif	821	#endif
712		822
713	static void	823	static void
714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
715	{
716	ev_child *w;
717
718	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
719	if (w->pid == pid || !w->pid)
720	{
721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
722	w->rpid = pid;
723	w->rstatus = status;
724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
725	}
726	}
727
728	static void
729	childcb (EV_P_ ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
730	{	825	{
731	int pid, status;	826	int pid, status;
732		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
734	{	830	if (!WCONTINUED
		831	|| errno != EINVAL
		832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		833	return;
		834
735	/* 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 */
736	/* 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 */
737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
738		838
739	child_reap (EV_A_ sw, pid, pid, status);	839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
740	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 */
741	}
742	}	842	}
743		843
744	#endif	844	#endif
745		845
746	/*****************************************************************************/	846	/*****************************************************************************/
…		…
772	{	872	{
773	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
774	}	874	}
775		875
776	/* return true if we are running with elevated privileges and should ignore env variables */	876	/* return true if we are running with elevated privileges and should ignore env variables */
777	static int	877	int inline_size
778	enable_secure (void)	878	enable_secure (void)
779	{	879	{
780	#ifdef _WIN32	880	#ifdef _WIN32
781	return 0;	881	return 0;
782	#else	882	#else
…		…
829	ev_backend (EV_P)	929	ev_backend (EV_P)
830	{	930	{
831	return backend;	931	return backend;
832	}	932	}
833		933
834	static void	934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
835	loop_init (EV_P_ unsigned int flags)	941	loop_init (EV_P_ unsigned int flags)
836	{	942	{
837	if (!backend)	943	if (!backend)
838	{	944	{
839	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
…		…
847	ev_rt_now = ev_time ();	953	ev_rt_now = ev_time ();
848	mn_now = get_clock ();	954	mn_now = get_clock ();
849	now_floor = mn_now;	955	now_floor = mn_now;
850	rtmn_diff = ev_rt_now - mn_now;	956	rtmn_diff = ev_rt_now - mn_now;
851		957
		958	/* pid check not overridable via env */
		959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
		963
852	if (!(flags & EVFLAG_NOENV)	964	if (!(flags & EVFLAG_NOENV)
853	&& !enable_secure ()	965	&& !enable_secure ()
854	&& getenv ("LIBEV_FLAGS"))	966	&& getenv ("LIBEV_FLAGS"))
855	flags = atoi (getenv ("LIBEV_FLAGS"));	967	flags = atoi (getenv ("LIBEV_FLAGS"));
856		968
857	if (!(flags & 0x0000ffffUL))	969	if (!(flags & 0x0000ffffUL))
858	flags |= ev_recommended_backends ();	970	flags |= ev_recommended_backends ();
859		971
860	backend = 0;	972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
861	#if EV_USE_PORT	978	#if EV_USE_PORT
862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
863	#endif	980	#endif
864	#if EV_USE_KQUEUE	981	#if EV_USE_KQUEUE
865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
877	ev_init (&sigev, sigcb);	994	ev_init (&sigev, sigcb);
878	ev_set_priority (&sigev, EV_MAXPRI);	995	ev_set_priority (&sigev, EV_MAXPRI);
879	}	996	}
880	}	997	}
881		998
882	static void	999	static void noinline
883	loop_destroy (EV_P)	1000	loop_destroy (EV_P)
884	{	1001	{
885	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);
886		1011
887	#if EV_USE_PORT	1012	#if EV_USE_PORT
888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
889	#endif	1014	#endif
890	#if EV_USE_KQUEUE	1015	#if EV_USE_KQUEUE
…		…
899	#if EV_USE_SELECT	1024	#if EV_USE_SELECT
900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
901	#endif	1026	#endif
902		1027
903	for (i = NUMPRI; i--; )	1028	for (i = NUMPRI; i--; )
		1029	{
904	array_free (pending, [i]);	1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
905		1035
906	/* have to use the microsoft-never-gets-it-right macro */	1036	/* have to use the microsoft-never-gets-it-right macro */
907	array_free (fdchange, EMPTY0);	1037	array_free (fdchange, EMPTY);
908	array_free (timer, EMPTY0);	1038	array_free (timer, EMPTY);
909	#if EV_PERIODICS	1039	#if EV_PERIODIC_ENABLE
910	array_free (periodic, EMPTY0);	1040	array_free (periodic, EMPTY);
911	#endif	1041	#endif
912	array_free (idle, EMPTY0);
913	array_free (prepare, EMPTY0);	1042	array_free (prepare, EMPTY);
914	array_free (check, EMPTY0);	1043	array_free (check, EMPTY);
915		1044
916	backend = 0;	1045	backend = 0;
917	}	1046	}
918		1047
919	static void	1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
920	loop_fork (EV_P)	1051	loop_fork (EV_P)
921	{	1052	{
922	#if EV_USE_PORT	1053	#if EV_USE_PORT
923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
924	#endif	1055	#endif
925	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
927	#endif	1058	#endif
928	#if EV_USE_EPOLL	1059	#if EV_USE_EPOLL
929	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);
930	#endif	1064	#endif
931		1065
932	if (ev_is_active (&sigev))	1066	if (ev_is_active (&sigev))
933	{	1067	{
934	/* default loop */	1068	/* default loop */
…		…
1050	postfork = 1;	1184	postfork = 1;
1051	}	1185	}
1052		1186
1053	/*****************************************************************************/	1187	/*****************************************************************************/
1054		1188
1055	static int	1189	void
1056	any_pending (EV_P)	1190	ev_invoke (EV_P_ void *w, int revents)
1057	{	1191	{
1058	int pri;	1192	EV_CB_INVOKE ((W)w, revents);
1059
1060	for (pri = NUMPRI; pri--; )
1061	if (pendingcnt [pri])
1062	return 1;
1063
1064	return 0;
1065	}	1193	}
1066		1194
1067	inline void	1195	void inline_speed
1068	call_pending (EV_P)	1196	call_pending (EV_P)
1069	{	1197	{
1070	int pri;	1198	int pri;
1071		1199
1072	for (pri = NUMPRI; pri--; )	1200	for (pri = NUMPRI; pri--; )
…		…
1074	{	1202	{
1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1076		1204
1077	if (expect_true (p->w))	1205	if (expect_true (p->w))
1078	{	1206	{
1079	assert (("non-pending watcher on pending list", p->w->pending));	1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1080		1208
1081	p->w->pending = 0;	1209	p->w->pending = 0;
1082	EV_CB_INVOKE (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
1083	}	1211	}
1084	}	1212	}
1085	}	1213	}
1086		1214
1087	inline void	1215	void inline_size
1088	timers_reify (EV_P)	1216	timers_reify (EV_P)
1089	{	1217	{
1090	while (timercnt && ((WT)timers [0])->at <= mn_now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1091	{	1219	{
1092	ev_timer *w = timers [0];	1220	ev_timer *w = timers [0];
1093		1221
1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1095		1223
1096	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
1097	if (w->repeat)	1225	if (w->repeat)
1098	{	1226	{
1099	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		1237
1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1111	}	1239	}
1112	}	1240	}
1113		1241
1114	#if EV_PERIODICS	1242	#if EV_PERIODIC_ENABLE
1115	inline void	1243	void inline_size
1116	periodics_reify (EV_P)	1244	periodics_reify (EV_P)
1117	{	1245	{
1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1119	{	1247	{
1120	ev_periodic *w = periodics [0];	1248	ev_periodic *w = periodics [0];
1121		1249
1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1123		1251
1124	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
1125	if (w->reschedule_cb)	1253	if (w->reschedule_cb)
1126	{	1254	{
1127	((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);
1128	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));
1129	downheap ((WT *)periodics, periodiccnt, 0);	1257	downheap ((WT *)periodics, periodiccnt, 0);
1130	}	1258	}
1131	else if (w->interval)	1259	else if (w->interval)
1132	{	1260	{
1133	((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;
1134	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));
1135	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap ((WT *)periodics, periodiccnt, 0);
1136	}	1265	}
1137	else	1266	else
1138	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1139		1268
1140	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1141	}	1270	}
1142	}	1271	}
1143		1272
1144	static void	1273	static void noinline
1145	periodics_reschedule (EV_P)	1274	periodics_reschedule (EV_P)
1146	{	1275	{
1147	int i;	1276	int i;
1148		1277
1149	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
…		…
1152	ev_periodic *w = periodics [i];	1281	ev_periodic *w = periodics [i];
1153		1282
1154	if (w->reschedule_cb)	1283	if (w->reschedule_cb)
1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1156	else if (w->interval)	1285	else if (w->interval)
1157	((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;
1158	}	1287	}
1159		1288
1160	/* now rebuild the heap */	1289	/* now rebuild the heap */
1161	for (i = periodiccnt >> 1; i--; )	1290	for (i = periodiccnt >> 1; i--; )
1162	downheap ((WT *)periodics, periodiccnt, i);	1291	downheap ((WT *)periodics, periodiccnt, i);
1163	}	1292	}
1164	#endif	1293	#endif
1165		1294
1166	inline int	1295	#if EV_IDLE_ENABLE
1167	time_update_monotonic (EV_P)	1296	void inline_size
		1297	idle_reify (EV_P)
1168	{	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
1169	mn_now = get_clock ();	1328	mn_now = get_clock ();
1170		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
1171	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1172	{	1333	{
1173	ev_rt_now = rtmn_diff + mn_now;	1334	ev_rt_now = rtmn_diff + mn_now;
1174	return 0;	1335	return;
1175	}	1336	}
1176	else	1337
1177	{
1178	now_floor = mn_now;	1338	now_floor = mn_now;
1179	ev_rt_now = ev_time ();	1339	ev_rt_now = ev_time ();
1180	return 1;
1181	}
1182	}
1183		1340
1184	inline void	1341	/* loop a few times, before making important decisions.
1185	time_update (EV_P)	1342	* on the choice of "4": one iteration isn't enough,
1186	{	1343	* in case we get preempted during the calls to
1187	int i;	1344	* ev_time and get_clock. a second call is almost guaranteed
1188		1345	* to succeed in that case, though. and looping a few more times
1189	#if EV_USE_MONOTONIC	1346	* doesn't hurt either as we only do this on time-jumps or
1190	if (expect_true (have_monotonic))	1347	* in the unlikely event of having been preempted here.
1191	{	1348	*/
1192	if (time_update_monotonic (EV_A))	1349	for (i = 4; --i; )
1193	{	1350	{
1194	ev_tstamp odiff = rtmn_diff;
1195
1196	/* loop a few times, before making important decisions.
1197	* on the choice of "4": one iteration isn't enough,
1198	* in case we get preempted during the calls to
1199	* ev_time and get_clock. a second call is almost guarenteed
1200	* to succeed in that case, though. and looping a few more times
1201	* doesn't hurt either as we only do this on time-jumps or
1202	* in the unlikely event of getting preempted here.
1203	*/
1204	for (i = 4; --i; )
1205	{
1206	rtmn_diff = ev_rt_now - mn_now;	1351	rtmn_diff = ev_rt_now - mn_now;
1207		1352
1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1209	return; /* all is well */	1354	return; /* all is well */
1210		1355
1211	ev_rt_now = ev_time ();	1356	ev_rt_now = ev_time ();
1212	mn_now = get_clock ();	1357	mn_now = get_clock ();
1213	now_floor = mn_now;	1358	now_floor = mn_now;
1214	}	1359	}
1215		1360
1216	# if EV_PERIODICS	1361	# if EV_PERIODIC_ENABLE
		1362	periodics_reschedule (EV_A);
		1363	# endif
		1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1366	}
		1367	else
		1368	#endif
		1369	{
		1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1373	{
		1374	#if EV_PERIODIC_ENABLE
1217	periodics_reschedule (EV_A);	1375	periodics_reschedule (EV_A);
1218	# endif	1376	#endif
1219	/* no timer adjustment, as the monotonic clock doesn't jump */
1220	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1221	}
1222	}
1223	else
1224	#endif
1225	{
1226	ev_rt_now = ev_time ();
1227
1228	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1229	{
1230	#if EV_PERIODICS
1231	periodics_reschedule (EV_A);
1232	#endif
1233
1234	/* 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 */
1235	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
1236	((WT)timers [i])->at += ev_rt_now - mn_now;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1237	}	1380	}
1238		1381
1239	mn_now = ev_rt_now;	1382	mn_now = ev_rt_now;
…		…
1259	{	1402	{
1260	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1261	? EVUNLOOP_ONE	1404	? EVUNLOOP_ONE
1262	: EVUNLOOP_CANCEL;	1405	: EVUNLOOP_CANCEL;
1263		1406
1264	while (activecnt)	1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1408
		1409	do
1265	{	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
1266	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
1267	if (expect_false (preparecnt))	1431	if (expect_false (preparecnt))
1268	{	1432	{
1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1270	call_pending (EV_A);	1434	call_pending (EV_A);
1271	}	1435	}
1272		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
1273	/* we might have forked, so reify kernel state if necessary */	1440	/* we might have forked, so reify kernel state if necessary */
1274	if (expect_false (postfork))	1441	if (expect_false (postfork))
1275	loop_fork (EV_A);	1442	loop_fork (EV_A);
1276		1443
1277	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
1278	fd_reify (EV_A);	1445	fd_reify (EV_A);
1279		1446
1280	/* calculate blocking time */	1447	/* calculate blocking time */
1281	{	1448	{
1282	double block;	1449	ev_tstamp block;
1283		1450
1284	if (flags & EVLOOP_NONBLOCK || idlecnt)	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1285	block = 0.; /* do not block at all */	1452	block = 0.; /* do not block at all */
1286	else	1453	else
1287	{	1454	{
1288	/* update time to cancel out callback processing overhead */	1455	/* update time to cancel out callback processing overhead */
1289	#if EV_USE_MONOTONIC
1290	if (expect_true (have_monotonic))
1291	time_update_monotonic (EV_A);	1456	time_update (EV_A_ 1e100);
1292	else
1293	#endif
1294	{
1295	ev_rt_now = ev_time ();
1296	mn_now = ev_rt_now;
1297	}
1298		1457
1299	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
1300		1459
1301	if (timercnt)	1460	if (timercnt)
1302	{	1461	{
1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1304	if (block > to) block = to;	1463	if (block > to) block = to;
1305	}	1464	}
1306		1465
1307	#if EV_PERIODICS	1466	#if EV_PERIODIC_ENABLE
1308	if (periodiccnt)	1467	if (periodiccnt)
1309	{	1468	{
1310	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1311	if (block > to) block = to;	1470	if (block > to) block = to;
1312	}	1471	}
1313	#endif	1472	#endif
1314		1473
1315	if (expect_false (block < 0.)) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
1316	}	1475	}
1317		1476
		1477	++loop_count;
1318	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);
1319	}	1482	}
1320
1321	/* update ev_rt_now, do magic */
1322	time_update (EV_A);
1323		1483
1324	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
1325	timers_reify (EV_A); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
1326	#if EV_PERIODICS	1486	#if EV_PERIODIC_ENABLE
1327	periodics_reify (EV_A); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
1328	#endif	1488	#endif
1329		1489
		1490	#if EV_IDLE_ENABLE
1330	/* queue idle watchers unless other events are pending */	1491	/* queue idle watchers unless other events are pending */
1331	if (idlecnt && !any_pending (EV_A))	1492	idle_reify (EV_A);
1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1493	#endif
1333		1494
1334	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
1335	if (expect_false (checkcnt))	1496	if (expect_false (checkcnt))
1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1337		1498
1338	call_pending (EV_A);	1499	call_pending (EV_A);
1339		1500
1340	if (expect_false (loop_done))
1341	break;
1342	}	1501	}
		1502	while (expect_true (activecnt && !loop_done));
1343		1503
1344	if (loop_done == EVUNLOOP_ONE)	1504	if (loop_done == EVUNLOOP_ONE)
1345	loop_done = EVUNLOOP_CANCEL;	1505	loop_done = EVUNLOOP_CANCEL;
1346	}	1506	}
1347		1507
…		…
1351	loop_done = how;	1511	loop_done = how;
1352	}	1512	}
1353		1513
1354	/*****************************************************************************/	1514	/*****************************************************************************/
1355		1515
1356	inline void	1516	void inline_size
1357	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
1358	{	1518	{
1359	elem->next = *head;	1519	elem->next = *head;
1360	*head = elem;	1520	*head = elem;
1361	}	1521	}
1362		1522
1363	inline void	1523	void inline_size
1364	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
1365	{	1525	{
1366	while (*head)	1526	while (*head)
1367	{	1527	{
1368	if (*head == elem)	1528	if (*head == elem)
…		…
1373		1533
1374	head = &(*head)->next;	1534	head = &(*head)->next;
1375	}	1535	}
1376	}	1536	}
1377		1537
1378	inline void	1538	void inline_speed
1379	ev_clear_pending (EV_P_ W w)	1539	clear_pending (EV_P_ W w)
1380	{	1540	{
1381	if (w->pending)	1541	if (w->pending)
1382	{	1542	{
1383	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1384	w->pending = 0;	1544	w->pending = 0;
1385	}	1545	}
1386	}	1546	}
1387		1547
1388	inline void	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
		1574	void inline_speed
1389	ev_start (EV_P_ W w, int active)	1575	ev_start (EV_P_ W w, int active)
1390	{	1576	{
1391	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1577	pri_adjust (EV_A_ w);
1392	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1393
1394	w->active = active;	1578	w->active = active;
1395	ev_ref (EV_A);	1579	ev_ref (EV_A);
1396	}	1580	}
1397		1581
1398	inline void	1582	void inline_size
1399	ev_stop (EV_P_ W w)	1583	ev_stop (EV_P_ W w)
1400	{	1584	{
1401	ev_unref (EV_A);	1585	ev_unref (EV_A);
1402	w->active = 0;	1586	w->active = 0;
1403	}	1587	}
1404		1588
1405	/*****************************************************************************/	1589	/*****************************************************************************/
1406		1590
1407	void	1591	void noinline
1408	ev_io_start (EV_P_ ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
1409	{	1593	{
1410	int fd = w->fd;	1594	int fd = w->fd;
1411		1595
1412	if (expect_false (ev_is_active (w)))	1596	if (expect_false (ev_is_active (w)))
…		…
1419	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1420		1604
1421	fd_change (EV_A_ fd);	1605	fd_change (EV_A_ fd);
1422	}	1606	}
1423		1607
1424	void	1608	void noinline
1425	ev_io_stop (EV_P_ ev_io *w)	1609	ev_io_stop (EV_P_ ev_io *w)
1426	{	1610	{
1427	ev_clear_pending (EV_A_ (W)w);	1611	clear_pending (EV_A_ (W)w);
1428	if (expect_false (!ev_is_active (w)))	1612	if (expect_false (!ev_is_active (w)))
1429	return;	1613	return;
1430		1614
1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1432		1616
…		…
1434	ev_stop (EV_A_ (W)w);	1618	ev_stop (EV_A_ (W)w);
1435		1619
1436	fd_change (EV_A_ w->fd);	1620	fd_change (EV_A_ w->fd);
1437	}	1621	}
1438		1622
1439	void	1623	void noinline
1440	ev_timer_start (EV_P_ ev_timer *w)	1624	ev_timer_start (EV_P_ ev_timer *w)
1441	{	1625	{
1442	if (expect_false (ev_is_active (w)))	1626	if (expect_false (ev_is_active (w)))
1443	return;	1627	return;
1444		1628
…		…
1449	ev_start (EV_A_ (W)w, ++timercnt);	1633	ev_start (EV_A_ (W)w, ++timercnt);
1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1451	timers [timercnt - 1] = w;	1635	timers [timercnt - 1] = w;
1452	upheap ((WT *)timers, timercnt - 1);	1636	upheap ((WT *)timers, timercnt - 1);
1453		1637
		1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1639	}
		1640
		1641	void noinline
		1642	ev_timer_stop (EV_P_ ev_timer *w)
		1643	{
		1644	clear_pending (EV_A_ (W)w);
		1645	if (expect_false (!ev_is_active (w)))
		1646	return;
		1647
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1455	}
1456		1649
1457	void	1650	{
1458	ev_timer_stop (EV_P_ ev_timer *w)	1651	int active = ((W)w)->active;
1459	{
1460	ev_clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))
1462	return;
1463		1652
1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1465
1466	if (expect_true (((W)w)->active < timercnt--))	1653	if (expect_true (--active < --timercnt))
1467	{	1654	{
1468	timers [((W)w)->active - 1] = timers [timercnt];	1655	timers [active] = timers [timercnt];
1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1656	adjustheap ((WT *)timers, timercnt, active);
1470	}	1657	}
		1658	}
1471		1659
1472	((WT)w)->at -= mn_now;	1660	((WT)w)->at -= mn_now;
1473		1661
1474	ev_stop (EV_A_ (W)w);	1662	ev_stop (EV_A_ (W)w);
1475	}	1663	}
1476		1664
1477	void	1665	void noinline
1478	ev_timer_again (EV_P_ ev_timer *w)	1666	ev_timer_again (EV_P_ ev_timer *w)
1479	{	1667	{
1480	if (ev_is_active (w))	1668	if (ev_is_active (w))
1481	{	1669	{
1482	if (w->repeat)	1670	if (w->repeat)
…		…
1492	w->at = w->repeat;	1680	w->at = w->repeat;
1493	ev_timer_start (EV_A_ w);	1681	ev_timer_start (EV_A_ w);
1494	}	1682	}
1495	}	1683	}
1496		1684
1497	#if EV_PERIODICS	1685	#if EV_PERIODIC_ENABLE
1498	void	1686	void noinline
1499	ev_periodic_start (EV_P_ ev_periodic *w)	1687	ev_periodic_start (EV_P_ ev_periodic *w)
1500	{	1688	{
1501	if (expect_false (ev_is_active (w)))	1689	if (expect_false (ev_is_active (w)))
1502	return;	1690	return;
1503		1691
…		…
1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1506	else if (w->interval)	1694	else if (w->interval)
1507	{	1695	{
1508	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1509	/* this formula differs from the one in periodic_reify because we do not always round up */	1697	/* this formula differs from the one in periodic_reify because we do not always round up */
1510	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1511	}	1699	}
		1700	else
		1701	((WT)w)->at = w->offset;
1512		1702
1513	ev_start (EV_A_ (W)w, ++periodiccnt);	1703	ev_start (EV_A_ (W)w, ++periodiccnt);
1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1515	periodics [periodiccnt - 1] = w;	1705	periodics [periodiccnt - 1] = w;
1516	upheap ((WT *)periodics, periodiccnt - 1);	1706	upheap ((WT *)periodics, periodiccnt - 1);
1517		1707
		1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1709	}
		1710
		1711	void noinline
		1712	ev_periodic_stop (EV_P_ ev_periodic *w)
		1713	{
		1714	clear_pending (EV_A_ (W)w);
		1715	if (expect_false (!ev_is_active (w)))
		1716	return;
		1717
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1519	}
1520		1719
1521	void	1720	{
1522	ev_periodic_stop (EV_P_ ev_periodic *w)	1721	int active = ((W)w)->active;
1523	{
1524	ev_clear_pending (EV_A_ (W)w);
1525	if (expect_false (!ev_is_active (w)))
1526	return;
1527		1722
1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1529
1530	if (expect_true (((W)w)->active < periodiccnt--))	1723	if (expect_true (--active < --periodiccnt))
1531	{	1724	{
1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1725	periodics [active] = periodics [periodiccnt];
1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1726	adjustheap ((WT *)periodics, periodiccnt, active);
1534	}	1727	}
		1728	}
1535		1729
1536	ev_stop (EV_A_ (W)w);	1730	ev_stop (EV_A_ (W)w);
1537	}	1731	}
1538		1732
1539	void	1733	void noinline
1540	ev_periodic_again (EV_P_ ev_periodic *w)	1734	ev_periodic_again (EV_P_ ev_periodic *w)
1541	{	1735	{
1542	/* TODO: use adjustheap and recalculation */	1736	/* TODO: use adjustheap and recalculation */
1543	ev_periodic_stop (EV_A_ w);	1737	ev_periodic_stop (EV_A_ w);
1544	ev_periodic_start (EV_A_ w);	1738	ev_periodic_start (EV_A_ w);
1545	}	1739	}
1546	#endif	1740	#endif
1547		1741
1548	void
1549	ev_idle_start (EV_P_ ev_idle *w)
1550	{
1551	if (expect_false (ev_is_active (w)))
1552	return;
1553
1554	ev_start (EV_A_ (W)w, ++idlecnt);
1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1556	idles [idlecnt - 1] = w;
1557	}
1558
1559	void
1560	ev_idle_stop (EV_P_ ev_idle *w)
1561	{
1562	ev_clear_pending (EV_A_ (W)w);
1563	if (expect_false (!ev_is_active (w)))
1564	return;
1565
1566	{
1567	int active = ((W)w)->active;
1568	idles [active - 1] = idles [--idlecnt];
1569	((W)idles [active - 1])->active = active;
1570	}
1571
1572	ev_stop (EV_A_ (W)w);
1573	}
1574
1575	void
1576	ev_prepare_start (EV_P_ ev_prepare *w)
1577	{
1578	if (expect_false (ev_is_active (w)))
1579	return;
1580
1581	ev_start (EV_A_ (W)w, ++preparecnt);
1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1583	prepares [preparecnt - 1] = w;
1584	}
1585
1586	void
1587	ev_prepare_stop (EV_P_ ev_prepare *w)
1588	{
1589	ev_clear_pending (EV_A_ (W)w);
1590	if (expect_false (!ev_is_active (w)))
1591	return;
1592
1593	{
1594	int active = ((W)w)->active;
1595	prepares [active - 1] = prepares [--preparecnt];
1596	((W)prepares [active - 1])->active = active;
1597	}
1598
1599	ev_stop (EV_A_ (W)w);
1600	}
1601
1602	void
1603	ev_check_start (EV_P_ ev_check *w)
1604	{
1605	if (expect_false (ev_is_active (w)))
1606	return;
1607
1608	ev_start (EV_A_ (W)w, ++checkcnt);
1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1610	checks [checkcnt - 1] = w;
1611	}
1612
1613	void
1614	ev_check_stop (EV_P_ ev_check *w)
1615	{
1616	ev_clear_pending (EV_A_ (W)w);
1617	if (expect_false (!ev_is_active (w)))
1618	return;
1619
1620	{
1621	int active = ((W)w)->active;
1622	checks [active - 1] = checks [--checkcnt];
1623	((W)checks [active - 1])->active = active;
1624	}
1625
1626	ev_stop (EV_A_ (W)w);
1627	}
1628
1629	#ifndef SA_RESTART	1742	#ifndef SA_RESTART
1630	# define SA_RESTART 0	1743	# define SA_RESTART 0
1631	#endif	1744	#endif
1632		1745
1633	void	1746	void noinline
1634	ev_signal_start (EV_P_ ev_signal *w)	1747	ev_signal_start (EV_P_ ev_signal *w)
1635	{	1748	{
1636	#if EV_MULTIPLICITY	1749	#if EV_MULTIPLICITY
1637	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1638	#endif	1751	#endif
1639	if (expect_false (ev_is_active (w)))	1752	if (expect_false (ev_is_active (w)))
1640	return;	1753	return;
1641		1754
1642	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1643		1756
		1757	{
		1758	#ifndef _WIN32
		1759	sigset_t full, prev;
		1760	sigfillset (&full);
		1761	sigprocmask (SIG_SETMASK, &full, &prev);
		1762	#endif
		1763
		1764	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1765
		1766	#ifndef _WIN32
		1767	sigprocmask (SIG_SETMASK, &prev, 0);
		1768	#endif
		1769	}
		1770
1644	ev_start (EV_A_ (W)w, 1);	1771	ev_start (EV_A_ (W)w, 1);
1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1647		1773
1648	if (!((WL)w)->next)	1774	if (!((WL)w)->next)
1649	{	1775	{
1650	#if _WIN32	1776	#if _WIN32
…		…
1657	sigaction (w->signum, &sa, 0);	1783	sigaction (w->signum, &sa, 0);
1658	#endif	1784	#endif
1659	}	1785	}
1660	}	1786	}
1661		1787
1662	void	1788	void noinline
1663	ev_signal_stop (EV_P_ ev_signal *w)	1789	ev_signal_stop (EV_P_ ev_signal *w)
1664	{	1790	{
1665	ev_clear_pending (EV_A_ (W)w);	1791	clear_pending (EV_A_ (W)w);
1666	if (expect_false (!ev_is_active (w)))	1792	if (expect_false (!ev_is_active (w)))
1667	return;	1793	return;
1668		1794
1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1670	ev_stop (EV_A_ (W)w);	1796	ev_stop (EV_A_ (W)w);
…		…
1681	#endif	1807	#endif
1682	if (expect_false (ev_is_active (w)))	1808	if (expect_false (ev_is_active (w)))
1683	return;	1809	return;
1684		1810
1685	ev_start (EV_A_ (W)w, 1);	1811	ev_start (EV_A_ (W)w, 1);
1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1687	}	1813	}
1688		1814
1689	void	1815	void
1690	ev_child_stop (EV_P_ ev_child *w)	1816	ev_child_stop (EV_P_ ev_child *w)
1691	{	1817	{
1692	ev_clear_pending (EV_A_ (W)w);	1818	clear_pending (EV_A_ (W)w);
1693	if (expect_false (!ev_is_active (w)))	1819	if (expect_false (!ev_is_active (w)))
1694	return;	1820	return;
1695		1821
1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1697	ev_stop (EV_A_ (W)w);	1823	ev_stop (EV_A_ (W)w);
1698	}	1824	}
1699		1825
1700	#if EV_MULTIPLICITY	1826	#if EV_STAT_ENABLE
		1827
		1828	# ifdef _WIN32
		1829	# undef lstat
		1830	# define lstat(a,b) _stati64 (a,b)
		1831	# endif
		1832
		1833	#define DEF_STAT_INTERVAL 5.0074891
		1834	#define MIN_STAT_INTERVAL 0.1074891
		1835
		1836	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1837
		1838	#if EV_USE_INOTIFY
		1839	# define EV_INOTIFY_BUFSIZE 8192
		1840
		1841	static void noinline
		1842	infy_add (EV_P_ ev_stat *w)
		1843	{
		1844	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);
		1845
		1846	if (w->wd < 0)
		1847	{
		1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1849
		1850	/* monitor some parent directory for speedup hints */
		1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1852	{
		1853	char path [4096];
		1854	strcpy (path, w->path);
		1855
		1856	do
		1857	{
		1858	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1859	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1860
		1861	char *pend = strrchr (path, '/');
		1862
		1863	if (!pend)
		1864	break; /* whoops, no '/', complain to your admin */
		1865
		1866	*pend = 0;
		1867	w->wd = inotify_add_watch (fs_fd, path, mask);
		1868	}
		1869	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1870	}
		1871	}
		1872	else
		1873	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1874
		1875	if (w->wd >= 0)
		1876	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1877	}
		1878
		1879	static void noinline
		1880	infy_del (EV_P_ ev_stat *w)
		1881	{
		1882	int slot;
		1883	int wd = w->wd;
		1884
		1885	if (wd < 0)
		1886	return;
		1887
		1888	w->wd = -2;
		1889	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1890	wlist_del (&fs_hash [slot].head, (WL)w);
		1891
		1892	/* remove this watcher, if others are watching it, they will rearm */
		1893	inotify_rm_watch (fs_fd, wd);
		1894	}
		1895
		1896	static void noinline
		1897	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1898	{
		1899	if (slot < 0)
		1900	/* overflow, need to check for all hahs slots */
		1901	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1902	infy_wd (EV_A_ slot, wd, ev);
		1903	else
		1904	{
		1905	WL w_;
		1906
		1907	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1908	{
		1909	ev_stat *w = (ev_stat *)w_;
		1910	w_ = w_->next; /* lets us remove this watcher and all before it */
		1911
		1912	if (w->wd == wd || wd == -1)
		1913	{
		1914	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1915	{
		1916	w->wd = -1;
		1917	infy_add (EV_A_ w); /* re-add, no matter what */
		1918	}
		1919
		1920	stat_timer_cb (EV_A_ &w->timer, 0);
		1921	}
		1922	}
		1923	}
		1924	}
		1925
		1926	static void
		1927	infy_cb (EV_P_ ev_io *w, int revents)
		1928	{
		1929	char buf [EV_INOTIFY_BUFSIZE];
		1930	struct inotify_event *ev = (struct inotify_event *)buf;
		1931	int ofs;
		1932	int len = read (fs_fd, buf, sizeof (buf));
		1933
		1934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1936	}
		1937
		1938	void inline_size
		1939	infy_init (EV_P)
		1940	{
		1941	if (fs_fd != -2)
		1942	return;
		1943
		1944	fs_fd = inotify_init ();
		1945
		1946	if (fs_fd >= 0)
		1947	{
		1948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1949	ev_set_priority (&fs_w, EV_MAXPRI);
		1950	ev_io_start (EV_A_ &fs_w);
		1951	}
		1952	}
		1953
		1954	void inline_size
		1955	infy_fork (EV_P)
		1956	{
		1957	int slot;
		1958
		1959	if (fs_fd < 0)
		1960	return;
		1961
		1962	close (fs_fd);
		1963	fs_fd = inotify_init ();
		1964
		1965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1966	{
		1967	WL w_ = fs_hash [slot].head;
		1968	fs_hash [slot].head = 0;
		1969
		1970	while (w_)
		1971	{
		1972	ev_stat *w = (ev_stat *)w_;
		1973	w_ = w_->next; /* lets us add this watcher */
		1974
		1975	w->wd = -1;
		1976
		1977	if (fs_fd >= 0)
		1978	infy_add (EV_A_ w); /* re-add, no matter what */
		1979	else
		1980	ev_timer_start (EV_A_ &w->timer);
		1981	}
		1982
		1983	}
		1984	}
		1985
		1986	#endif
		1987
1701	void	1988	void
		1989	ev_stat_stat (EV_P_ ev_stat *w)
		1990	{
		1991	if (lstat (w->path, &w->attr) < 0)
		1992	w->attr.st_nlink = 0;
		1993	else if (!w->attr.st_nlink)
		1994	w->attr.st_nlink = 1;
		1995	}
		1996
		1997	static void noinline
		1998	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1999	{
		2000	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2001
		2002	/* we copy this here each the time so that */
		2003	/* prev has the old value when the callback gets invoked */
		2004	w->prev = w->attr;
		2005	ev_stat_stat (EV_A_ w);
		2006
		2007	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2008	if (
		2009	w->prev.st_dev != w->attr.st_dev
		2010	|| w->prev.st_ino != w->attr.st_ino
		2011	|| w->prev.st_mode != w->attr.st_mode
		2012	|| w->prev.st_nlink != w->attr.st_nlink
		2013	|| w->prev.st_uid != w->attr.st_uid
		2014	|| w->prev.st_gid != w->attr.st_gid
		2015	|| w->prev.st_rdev != w->attr.st_rdev
		2016	|| w->prev.st_size != w->attr.st_size
		2017	|| w->prev.st_atime != w->attr.st_atime
		2018	|| w->prev.st_mtime != w->attr.st_mtime
		2019	|| w->prev.st_ctime != w->attr.st_ctime
		2020	) {
		2021	#if EV_USE_INOTIFY
		2022	infy_del (EV_A_ w);
		2023	infy_add (EV_A_ w);
		2024	ev_stat_stat (EV_A_ w); /* avoid race... */
		2025	#endif
		2026
		2027	ev_feed_event (EV_A_ w, EV_STAT);
		2028	}
		2029	}
		2030
		2031	void
		2032	ev_stat_start (EV_P_ ev_stat *w)
		2033	{
		2034	if (expect_false (ev_is_active (w)))
		2035	return;
		2036
		2037	/* since we use memcmp, we need to clear any padding data etc. */
		2038	memset (&w->prev, 0, sizeof (ev_statdata));
		2039	memset (&w->attr, 0, sizeof (ev_statdata));
		2040
		2041	ev_stat_stat (EV_A_ w);
		2042
		2043	if (w->interval < MIN_STAT_INTERVAL)
		2044	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2045
		2046	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2047	ev_set_priority (&w->timer, ev_priority (w));
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_init (EV_A);
		2051
		2052	if (fs_fd >= 0)
		2053	infy_add (EV_A_ w);
		2054	else
		2055	#endif
		2056	ev_timer_start (EV_A_ &w->timer);
		2057
		2058	ev_start (EV_A_ (W)w, 1);
		2059	}
		2060
		2061	void
		2062	ev_stat_stop (EV_P_ ev_stat *w)
		2063	{
		2064	clear_pending (EV_A_ (W)w);
		2065	if (expect_false (!ev_is_active (w)))
		2066	return;
		2067
		2068	#if EV_USE_INOTIFY
		2069	infy_del (EV_A_ w);
		2070	#endif
		2071	ev_timer_stop (EV_A_ &w->timer);
		2072
		2073	ev_stop (EV_A_ (W)w);
		2074	}
		2075	#endif
		2076
		2077	#if EV_IDLE_ENABLE
		2078	void
		2079	ev_idle_start (EV_P_ ev_idle *w)
		2080	{
		2081	if (expect_false (ev_is_active (w)))
		2082	return;
		2083
		2084	pri_adjust (EV_A_ (W)w);
		2085
		2086	{
		2087	int active = ++idlecnt [ABSPRI (w)];
		2088
		2089	++idleall;
		2090	ev_start (EV_A_ (W)w, active);
		2091
		2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2093	idles [ABSPRI (w)][active - 1] = w;
		2094	}
		2095	}
		2096
		2097	void
		2098	ev_idle_stop (EV_P_ ev_idle *w)
		2099	{
		2100	clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	{
		2105	int active = ((W)w)->active;
		2106
		2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2108	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2109
		2110	ev_stop (EV_A_ (W)w);
		2111	--idleall;
		2112	}
		2113	}
		2114	#endif
		2115
		2116	void
		2117	ev_prepare_start (EV_P_ ev_prepare *w)
		2118	{
		2119	if (expect_false (ev_is_active (w)))
		2120	return;
		2121
		2122	ev_start (EV_A_ (W)w, ++preparecnt);
		2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2124	prepares [preparecnt - 1] = w;
		2125	}
		2126
		2127	void
		2128	ev_prepare_stop (EV_P_ ev_prepare *w)
		2129	{
		2130	clear_pending (EV_A_ (W)w);
		2131	if (expect_false (!ev_is_active (w)))
		2132	return;
		2133
		2134	{
		2135	int active = ((W)w)->active;
		2136	prepares [active - 1] = prepares [--preparecnt];
		2137	((W)prepares [active - 1])->active = active;
		2138	}
		2139
		2140	ev_stop (EV_A_ (W)w);
		2141	}
		2142
		2143	void
		2144	ev_check_start (EV_P_ ev_check *w)
		2145	{
		2146	if (expect_false (ev_is_active (w)))
		2147	return;
		2148
		2149	ev_start (EV_A_ (W)w, ++checkcnt);
		2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2151	checks [checkcnt - 1] = w;
		2152	}
		2153
		2154	void
		2155	ev_check_stop (EV_P_ ev_check *w)
		2156	{
		2157	clear_pending (EV_A_ (W)w);
		2158	if (expect_false (!ev_is_active (w)))
		2159	return;
		2160
		2161	{
		2162	int active = ((W)w)->active;
		2163	checks [active - 1] = checks [--checkcnt];
		2164	((W)checks [active - 1])->active = active;
		2165	}
		2166
		2167	ev_stop (EV_A_ (W)w);
		2168	}
		2169
		2170	#if EV_EMBED_ENABLE
		2171	void noinline
1702	ev_embed_sweep (EV_P_ ev_embed *w)	2172	ev_embed_sweep (EV_P_ ev_embed *w)
1703	{	2173	{
1704	ev_loop (w->loop, EVLOOP_NONBLOCK);	2174	ev_loop (w->loop, EVLOOP_NONBLOCK);
1705	}	2175	}
1706		2176
…		…
1727	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1728	}	2198	}
1729		2199
1730	ev_set_priority (&w->io, ev_priority (w));	2200	ev_set_priority (&w->io, ev_priority (w));
1731	ev_io_start (EV_A_ &w->io);	2201	ev_io_start (EV_A_ &w->io);
		2202
1732	ev_start (EV_A_ (W)w, 1);	2203	ev_start (EV_A_ (W)w, 1);
1733	}	2204	}
1734		2205
1735	void	2206	void
1736	ev_embed_stop (EV_P_ ev_embed *w)	2207	ev_embed_stop (EV_P_ ev_embed *w)
1737	{	2208	{
1738	ev_clear_pending (EV_A_ (W)w);	2209	clear_pending (EV_A_ (W)w);
1739	if (expect_false (!ev_is_active (w)))	2210	if (expect_false (!ev_is_active (w)))
1740	return;	2211	return;
1741		2212
1742	ev_io_stop (EV_A_ &w->io);	2213	ev_io_stop (EV_A_ &w->io);
		2214
		2215	ev_stop (EV_A_ (W)w);
		2216	}
		2217	#endif
		2218
		2219	#if EV_FORK_ENABLE
		2220	void
		2221	ev_fork_start (EV_P_ ev_fork *w)
		2222	{
		2223	if (expect_false (ev_is_active (w)))
		2224	return;
		2225
		2226	ev_start (EV_A_ (W)w, ++forkcnt);
		2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2228	forks [forkcnt - 1] = w;
		2229	}
		2230
		2231	void
		2232	ev_fork_stop (EV_P_ ev_fork *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	{
		2239	int active = ((W)w)->active;
		2240	forks [active - 1] = forks [--forkcnt];
		2241	((W)forks [active - 1])->active = active;
		2242	}
		2243
1743	ev_stop (EV_A_ (W)w);	2244	ev_stop (EV_A_ (W)w);
1744	}	2245	}
1745	#endif	2246	#endif
1746		2247
1747	/*****************************************************************************/	2248	/*****************************************************************************/

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