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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 1.184 by root, Wed Dec 12 05:30:52 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;
…		…
455	{	533	{
456	int fd = fdchanges [i];	534	int fd = fdchanges [i];
457	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
458	ev_io *w;	536	ev_io *w;
459		537
460	int events = 0;	538	unsigned char events = 0;
461		539
462	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
463	events |= w->events;	541	events |= (unsigned char)w->events;
464		542
465	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
466	if (events)	544	if (events)
467	{	545	{
468	unsigned long argp;	546	unsigned long argp;
469	anfd->handle = _get_osfhandle (fd);	547	anfd->handle = _get_osfhandle (fd);
470	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
471	}	549	}
472	#endif	550	#endif
473		551
		552	{
		553	unsigned char o_events = anfd->events;
		554	unsigned char o_reify = anfd->reify;
		555
474	anfd->reify = 0;	556	anfd->reify = 0;
475
476	backend_modify (EV_A_ fd, anfd->events, events);
477	anfd->events = events;	557	anfd->events = events;
		558
		559	if (o_events != events || o_reify & EV_IOFDSET)
		560	backend_modify (EV_A_ fd, o_events, events);
		561	}
478	}	562	}
479		563
480	fdchangecnt = 0;	564	fdchangecnt = 0;
481	}	565	}
482		566
483	void inline_size	567	void inline_size
484	fd_change (EV_P_ int fd)	568	fd_change (EV_P_ int fd, int flags)
485	{	569	{
486	if (expect_false (anfds [fd].reify))	570	unsigned char reify = anfds [fd].reify;
487	return;
488
489	anfds [fd].reify = 1;	571	anfds [fd].reify |= flags;
490		572
		573	if (expect_true (!reify))
		574	{
491	++fdchangecnt;	575	++fdchangecnt;
492	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
493	fdchanges [fdchangecnt - 1] = fd;	577	fdchanges [fdchangecnt - 1] = fd;
		578	}
494	}	579	}
495		580
496	void inline_speed	581	void inline_speed
497	fd_kill (EV_P_ int fd)	582	fd_kill (EV_P_ int fd)
498	{	583	{
…		…
545	static void noinline	630	static void noinline
546	fd_rearm_all (EV_P)	631	fd_rearm_all (EV_P)
547	{	632	{
548	int fd;	633	int fd;
549		634
550	/* this should be highly optimised to not do anything but set a flag */
551	for (fd = 0; fd < anfdmax; ++fd)	635	for (fd = 0; fd < anfdmax; ++fd)
552	if (anfds [fd].events)	636	if (anfds [fd].events)
553	{	637	{
554	anfds [fd].events = 0;	638	anfds [fd].events = 0;
555	fd_change (EV_A_ fd);	639	fd_change (EV_A_ fd, EV_IOFDSET | 1);
556	}	640	}
557	}	641	}
558		642
559	/*****************************************************************************/	643	/*****************************************************************************/
560		644
561	void inline_speed	645	void inline_speed
562	upheap (WT *heap, int k)	646	upheap (WT *heap, int k)
563	{	647	{
564	WT w = heap [k];	648	WT w = heap [k];
565		649
566	while (k && heap [k >> 1]->at > w->at)	650	while (k)
567	{	651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
568	heap [k] = heap [k >> 1];	657	heap [k] = heap [p];
569	((W)heap [k])->active = k + 1;	658	((W)heap [k])->active = k + 1;
570	k >>= 1;	659	k = p;
571	}	660	}
572		661
573	heap [k] = w;	662	heap [k] = w;
574	((W)heap [k])->active = k + 1;	663	((W)heap [k])->active = k + 1;
575
576	}	664	}
577		665
578	void inline_speed	666	void inline_speed
579	downheap (WT *heap, int N, int k)	667	downheap (WT *heap, int N, int k)
580	{	668	{
581	WT w = heap [k];	669	WT w = heap [k];
582		670
583	while (k < (N >> 1))	671	for (;;)
584	{	672	{
585	int j = k << 1;	673	int c = (k << 1) + 1;
586		674
587	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	675	if (c >= N)
588	++j;
589
590	if (w->at <= heap [j]->at)
591	break;	676	break;
592		677
		678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		679	? 1 : 0;
		680
		681	if (w->at <= heap [c]->at)
		682	break;
		683
593	heap [k] = heap [j];	684	heap [k] = heap [c];
594	((W)heap [k])->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686
595	k = j;	687	k = c;
596	}	688	}
597		689
598	heap [k] = w;	690	heap [k] = w;
599	((W)heap [k])->active = k + 1;	691	((W)heap [k])->active = k + 1;
600	}	692	}
…		…
682	for (signum = signalmax; signum--; )	774	for (signum = signalmax; signum--; )
683	if (signals [signum].gotsig)	775	if (signals [signum].gotsig)
684	ev_feed_signal_event (EV_A_ signum + 1);	776	ev_feed_signal_event (EV_A_ signum + 1);
685	}	777	}
686		778
687	void inline_size	779	void inline_speed
688	fd_intern (int fd)	780	fd_intern (int fd)
689	{	781	{
690	#ifdef _WIN32	782	#ifdef _WIN32
691	int arg = 1;	783	int arg = 1;
692	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	784	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
707	ev_unref (EV_A); /* child watcher should not keep loop alive */	799	ev_unref (EV_A); /* child watcher should not keep loop alive */
708	}	800	}
709		801
710	/*****************************************************************************/	802	/*****************************************************************************/
711		803
712	static ev_child *childs [PID_HASHSIZE];	804	static WL childs [EV_PID_HASHSIZE];
713		805
714	#ifndef _WIN32	806	#ifndef _WIN32
715		807
716	static ev_signal childev;	808	static ev_signal childev;
		809
		810	void inline_speed
		811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		812	{
		813	ev_child *w;
		814
		815	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		816	if (w->pid == pid || !w->pid)
		817	{
		818	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		819	w->rpid = pid;
		820	w->rstatus = status;
		821	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		822	}
		823	}
717		824
718	#ifndef WCONTINUED	825	#ifndef WCONTINUED
719	# define WCONTINUED 0	826	# define WCONTINUED 0
720	#endif	827	#endif
721		828
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	829	static void
738	childcb (EV_P_ ev_signal *sw, int revents)	830	childcb (EV_P_ ev_signal *sw, int revents)
739	{	831	{
740	int pid, status;	832	int pid, status;
741		833
		834	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
742	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	835	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
743	{	836	if (!WCONTINUED
		837	|| errno != EINVAL
		838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		839	return;
		840
744	/* make sure we are called again until all childs have been reaped */	841	/* 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 */	842	/* 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);	843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
747		844
748	child_reap (EV_A_ sw, pid, pid, status);	845	child_reap (EV_A_ sw, pid, pid, status);
		846	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 */	847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
750	}
751	}	848	}
752		849
753	#endif	850	#endif
754		851
755	/*****************************************************************************/	852	/*****************************************************************************/
…		…
838	ev_backend (EV_P)	935	ev_backend (EV_P)
839	{	936	{
840	return backend;	937	return backend;
841	}	938	}
842		939
843	static void	940	unsigned int
		941	ev_loop_count (EV_P)
		942	{
		943	return loop_count;
		944	}
		945
		946	static void noinline
844	loop_init (EV_P_ unsigned int flags)	947	loop_init (EV_P_ unsigned int flags)
845	{	948	{
846	if (!backend)	949	if (!backend)
847	{	950	{
848	#if EV_USE_MONOTONIC	951	#if EV_USE_MONOTONIC
…		…
856	ev_rt_now = ev_time ();	959	ev_rt_now = ev_time ();
857	mn_now = get_clock ();	960	mn_now = get_clock ();
858	now_floor = mn_now;	961	now_floor = mn_now;
859	rtmn_diff = ev_rt_now - mn_now;	962	rtmn_diff = ev_rt_now - mn_now;
860		963
		964	/* pid check not overridable via env */
		965	#ifndef _WIN32
		966	if (flags & EVFLAG_FORKCHECK)
		967	curpid = getpid ();
		968	#endif
		969
861	if (!(flags & EVFLAG_NOENV)	970	if (!(flags & EVFLAG_NOENV)
862	&& !enable_secure ()	971	&& !enable_secure ()
863	&& getenv ("LIBEV_FLAGS"))	972	&& getenv ("LIBEV_FLAGS"))
864	flags = atoi (getenv ("LIBEV_FLAGS"));	973	flags = atoi (getenv ("LIBEV_FLAGS"));
865		974
866	if (!(flags & 0x0000ffffUL))	975	if (!(flags & 0x0000ffffUL))
867	flags |= ev_recommended_backends ();	976	flags |= ev_recommended_backends ();
868		977
869	backend = 0;	978	backend = 0;
		979	backend_fd = -1;
		980	#if EV_USE_INOTIFY
		981	fs_fd = -2;
		982	#endif
		983
870	#if EV_USE_PORT	984	#if EV_USE_PORT
871	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
872	#endif	986	#endif
873	#if EV_USE_KQUEUE	987	#if EV_USE_KQUEUE
874	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
886	ev_init (&sigev, sigcb);	1000	ev_init (&sigev, sigcb);
887	ev_set_priority (&sigev, EV_MAXPRI);	1001	ev_set_priority (&sigev, EV_MAXPRI);
888	}	1002	}
889	}	1003	}
890		1004
891	static void	1005	static void noinline
892	loop_destroy (EV_P)	1006	loop_destroy (EV_P)
893	{	1007	{
894	int i;	1008	int i;
		1009
		1010	#if EV_USE_INOTIFY
		1011	if (fs_fd >= 0)
		1012	close (fs_fd);
		1013	#endif
		1014
		1015	if (backend_fd >= 0)
		1016	close (backend_fd);
895		1017
896	#if EV_USE_PORT	1018	#if EV_USE_PORT
897	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1019	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
898	#endif	1020	#endif
899	#if EV_USE_KQUEUE	1021	#if EV_USE_KQUEUE
…		…
908	#if EV_USE_SELECT	1030	#if EV_USE_SELECT
909	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
910	#endif	1032	#endif
911		1033
912	for (i = NUMPRI; i--; )	1034	for (i = NUMPRI; i--; )
		1035	{
913	array_free (pending, [i]);	1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
914		1041
915	/* have to use the microsoft-never-gets-it-right macro */	1042	/* have to use the microsoft-never-gets-it-right macro */
916	array_free (fdchange, EMPTY0);	1043	array_free (fdchange, EMPTY);
917	array_free (timer, EMPTY0);	1044	array_free (timer, EMPTY);
918	#if EV_PERIODIC_ENABLE	1045	#if EV_PERIODIC_ENABLE
919	array_free (periodic, EMPTY0);	1046	array_free (periodic, EMPTY);
920	#endif	1047	#endif
921	array_free (idle, EMPTY0);
922	array_free (prepare, EMPTY0);	1048	array_free (prepare, EMPTY);
923	array_free (check, EMPTY0);	1049	array_free (check, EMPTY);
924		1050
925	backend = 0;	1051	backend = 0;
926	}	1052	}
927		1053
928	static void	1054	void inline_size infy_fork (EV_P);
		1055
		1056	void inline_size
929	loop_fork (EV_P)	1057	loop_fork (EV_P)
930	{	1058	{
931	#if EV_USE_PORT	1059	#if EV_USE_PORT
932	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1060	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
933	#endif	1061	#endif
934	#if EV_USE_KQUEUE	1062	#if EV_USE_KQUEUE
935	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1063	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
936	#endif	1064	#endif
937	#if EV_USE_EPOLL	1065	#if EV_USE_EPOLL
938	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1066	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1067	#endif
		1068	#if EV_USE_INOTIFY
		1069	infy_fork (EV_A);
939	#endif	1070	#endif
940		1071
941	if (ev_is_active (&sigev))	1072	if (ev_is_active (&sigev))
942	{	1073	{
943	/* default loop */	1074	/* default loop */
…		…
1059	postfork = 1;	1190	postfork = 1;
1060	}	1191	}
1061		1192
1062	/*****************************************************************************/	1193	/*****************************************************************************/
1063		1194
1064	int inline_size	1195	void
1065	any_pending (EV_P)	1196	ev_invoke (EV_P_ void *w, int revents)
1066	{	1197	{
1067	int pri;	1198	EV_CB_INVOKE ((W)w, revents);
1068
1069	for (pri = NUMPRI; pri--; )
1070	if (pendingcnt [pri])
1071	return 1;
1072
1073	return 0;
1074	}	1199	}
1075		1200
1076	void inline_speed	1201	void inline_speed
1077	call_pending (EV_P)	1202	call_pending (EV_P)
1078	{	1203	{
…		…
1083	{	1208	{
1084	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1209	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1085		1210
1086	if (expect_true (p->w))	1211	if (expect_true (p->w))
1087	{	1212	{
1088	assert (("non-pending watcher on pending list", p->w->pending));	1213	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1089		1214
1090	p->w->pending = 0;	1215	p->w->pending = 0;
1091	EV_CB_INVOKE (p->w, p->events);	1216	EV_CB_INVOKE (p->w, p->events);
1092	}	1217	}
1093	}	1218	}
…		…
1096	void inline_size	1221	void inline_size
1097	timers_reify (EV_P)	1222	timers_reify (EV_P)
1098	{	1223	{
1099	while (timercnt && ((WT)timers [0])->at <= mn_now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
1100	{	1225	{
1101	ev_timer *w = timers [0];	1226	ev_timer *w = (ev_timer *)timers [0];
1102		1227
1103	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1104		1229
1105	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
1106	if (w->repeat)	1231	if (w->repeat)
1107	{	1232	{
1108	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1233	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1109		1234
1110	((WT)w)->at += w->repeat;	1235	((WT)w)->at += w->repeat;
1111	if (((WT)w)->at < mn_now)	1236	if (((WT)w)->at < mn_now)
1112	((WT)w)->at = mn_now;	1237	((WT)w)->at = mn_now;
1113		1238
1114	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
1115	}	1240	}
1116	else	1241	else
1117	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1118		1243
1119	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1124	void inline_size	1249	void inline_size
1125	periodics_reify (EV_P)	1250	periodics_reify (EV_P)
1126	{	1251	{
1127	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1128	{	1253	{
1129	ev_periodic *w = periodics [0];	1254	ev_periodic *w = (ev_periodic *)periodics [0];
1130		1255
1131	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1132		1257
1133	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
1134	if (w->reschedule_cb)	1259	if (w->reschedule_cb)
1135	{	1260	{
1136	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1137	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1138	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
1139	}	1264	}
1140	else if (w->interval)	1265	else if (w->interval)
1141	{	1266	{
1142	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1143	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1270	downheap (periodics, periodiccnt, 0);
1145	}	1271	}
1146	else	1272	else
1147	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1148		1274
1149	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1156	int i;	1282	int i;
1157		1283
1158	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
1159	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
1160	{	1286	{
1161	ev_periodic *w = periodics [i];	1287	ev_periodic *w = (ev_periodic *)periodics [i];
1162		1288
1163	if (w->reschedule_cb)	1289	if (w->reschedule_cb)
1164	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1165	else if (w->interval)	1291	else if (w->interval)
1166	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1167	}	1293	}
1168		1294
1169	/* now rebuild the heap */	1295	/* now rebuild the heap */
1170	for (i = periodiccnt >> 1; i--; )	1296	for (i = periodiccnt >> 1; i--; )
1171	downheap ((WT *)periodics, periodiccnt, i);	1297	downheap (periodics, periodiccnt, i);
1172	}	1298	}
1173	#endif	1299	#endif
1174		1300
		1301	#if EV_IDLE_ENABLE
1175	int inline_size	1302	void inline_size
1176	time_update_monotonic (EV_P)	1303	idle_reify (EV_P)
1177	{	1304	{
		1305	if (expect_false (idleall))
		1306	{
		1307	int pri;
		1308
		1309	for (pri = NUMPRI; pri--; )
		1310	{
		1311	if (pendingcnt [pri])
		1312	break;
		1313
		1314	if (idlecnt [pri])
		1315	{
		1316	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1317	break;
		1318	}
		1319	}
		1320	}
		1321	}
		1322	#endif
		1323
		1324	void inline_speed
		1325	time_update (EV_P_ ev_tstamp max_block)
		1326	{
		1327	int i;
		1328
		1329	#if EV_USE_MONOTONIC
		1330	if (expect_true (have_monotonic))
		1331	{
		1332	ev_tstamp odiff = rtmn_diff;
		1333
1178	mn_now = get_clock ();	1334	mn_now = get_clock ();
1179		1335
		1336	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1337	/* interpolate in the meantime */
1180	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1181	{	1339	{
1182	ev_rt_now = rtmn_diff + mn_now;	1340	ev_rt_now = rtmn_diff + mn_now;
1183	return 0;	1341	return;
1184	}	1342	}
1185	else	1343
1186	{
1187	now_floor = mn_now;	1344	now_floor = mn_now;
1188	ev_rt_now = ev_time ();	1345	ev_rt_now = ev_time ();
1189	return 1;
1190	}
1191	}
1192		1346
1193	void inline_size	1347	/* loop a few times, before making important decisions.
1194	time_update (EV_P)	1348	* on the choice of "4": one iteration isn't enough,
1195	{	1349	* in case we get preempted during the calls to
1196	int i;	1350	* ev_time and get_clock. a second call is almost guaranteed
1197		1351	* to succeed in that case, though. and looping a few more times
1198	#if EV_USE_MONOTONIC	1352	* doesn't hurt either as we only do this on time-jumps or
1199	if (expect_true (have_monotonic))	1353	* in the unlikely event of having been preempted here.
1200	{	1354	*/
1201	if (time_update_monotonic (EV_A))	1355	for (i = 4; --i; )
1202	{	1356	{
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;	1357	rtmn_diff = ev_rt_now - mn_now;
1216		1358
1217	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1218	return; /* all is well */	1360	return; /* all is well */
1219		1361
1220	ev_rt_now = ev_time ();	1362	ev_rt_now = ev_time ();
1221	mn_now = get_clock ();	1363	mn_now = get_clock ();
1222	now_floor = mn_now;	1364	now_floor = mn_now;
1223	}	1365	}
1224		1366
1225	# if EV_PERIODIC_ENABLE	1367	# if EV_PERIODIC_ENABLE
1226	periodics_reschedule (EV_A);	1368	periodics_reschedule (EV_A);
1227	# endif	1369	# endif
1228	/* no timer adjustment, as the monotonic clock doesn't jump */	1370	/* no timer adjustment, as the monotonic clock doesn't jump */
1229	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1371	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1230	}
1231	}	1372	}
1232	else	1373	else
1233	#endif	1374	#endif
1234	{	1375	{
1235	ev_rt_now = ev_time ();	1376	ev_rt_now = ev_time ();
1236		1377
1237	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1378	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1238	{	1379	{
1239	#if EV_PERIODIC_ENABLE	1380	#if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1381	periodics_reschedule (EV_A);
1241	#endif	1382	#endif
1242
1243	/* adjust timers. this is easy, as the offset is the same for all */	1383	/* adjust timers. this is easy, as the offset is the same for all of them */
1244	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
1245	((WT)timers [i])->at += ev_rt_now - mn_now;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
1246	}	1386	}
1247		1387
1248	mn_now = ev_rt_now;	1388	mn_now = ev_rt_now;
…		…
1268	{	1408	{
1269	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1409	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1270	? EVUNLOOP_ONE	1410	? EVUNLOOP_ONE
1271	: EVUNLOOP_CANCEL;	1411	: EVUNLOOP_CANCEL;
1272		1412
1273	while (activecnt)	1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1414
		1415	do
1274	{	1416	{
		1417	#ifndef _WIN32
		1418	if (expect_false (curpid)) /* penalise the forking check even more */
		1419	if (expect_false (getpid () != curpid))
		1420	{
		1421	curpid = getpid ();
		1422	postfork = 1;
		1423	}
		1424	#endif
		1425
		1426	#if EV_FORK_ENABLE
		1427	/* we might have forked, so queue fork handlers */
		1428	if (expect_false (postfork))
		1429	if (forkcnt)
		1430	{
		1431	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1432	call_pending (EV_A);
		1433	}
		1434	#endif
		1435
1275	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
1276	if (expect_false (preparecnt))	1437	if (expect_false (preparecnt))
1277	{	1438	{
1278	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1279	call_pending (EV_A);	1440	call_pending (EV_A);
1280	}	1441	}
1281		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
1282	/* we might have forked, so reify kernel state if necessary */	1446	/* we might have forked, so reify kernel state if necessary */
1283	if (expect_false (postfork))	1447	if (expect_false (postfork))
1284	loop_fork (EV_A);	1448	loop_fork (EV_A);
1285		1449
1286	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
1287	fd_reify (EV_A);	1451	fd_reify (EV_A);
1288		1452
1289	/* calculate blocking time */	1453	/* calculate blocking time */
1290	{	1454	{
1291	double block;	1455	ev_tstamp block;
1292		1456
1293	if (flags & EVLOOP_NONBLOCK || idlecnt)	1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1294	block = 0.; /* do not block at all */	1458	block = 0.; /* do not block at all */
1295	else	1459	else
1296	{	1460	{
1297	/* update time to cancel out callback processing overhead */	1461	/* 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);	1462	time_update (EV_A_ 1e100);
1301	else
1302	#endif
1303	{
1304	ev_rt_now = ev_time ();
1305	mn_now = ev_rt_now;
1306	}
1307		1463
1308	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
1309		1465
1310	if (timercnt)	1466	if (timercnt)
1311	{	1467	{
…		…
1322	#endif	1478	#endif
1323		1479
1324	if (expect_false (block < 0.)) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
1325	}	1481	}
1326		1482
		1483	++loop_count;
1327	backend_poll (EV_A_ block);	1484	backend_poll (EV_A_ block);
		1485
		1486	/* update ev_rt_now, do magic */
		1487	time_update (EV_A_ block);
1328	}	1488	}
1329
1330	/* update ev_rt_now, do magic */
1331	time_update (EV_A);
1332		1489
1333	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
1334	timers_reify (EV_A); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
1335	#if EV_PERIODIC_ENABLE	1492	#if EV_PERIODIC_ENABLE
1336	periodics_reify (EV_A); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
1337	#endif	1494	#endif
1338		1495
		1496	#if EV_IDLE_ENABLE
1339	/* queue idle watchers unless other events are pending */	1497	/* queue idle watchers unless other events are pending */
1340	if (idlecnt && !any_pending (EV_A))	1498	idle_reify (EV_A);
1341	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1499	#endif
1342		1500
1343	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
1344	if (expect_false (checkcnt))	1502	if (expect_false (checkcnt))
1345	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1346		1504
1347	call_pending (EV_A);	1505	call_pending (EV_A);
1348		1506
1349	if (expect_false (loop_done))
1350	break;
1351	}	1507	}
		1508	while (expect_true (activecnt && !loop_done));
1352		1509
1353	if (loop_done == EVUNLOOP_ONE)	1510	if (loop_done == EVUNLOOP_ONE)
1354	loop_done = EVUNLOOP_CANCEL;	1511	loop_done = EVUNLOOP_CANCEL;
1355	}	1512	}
1356		1513
…		…
1383	head = &(*head)->next;	1540	head = &(*head)->next;
1384	}	1541	}
1385	}	1542	}
1386		1543
1387	void inline_speed	1544	void inline_speed
1388	ev_clear_pending (EV_P_ W w)	1545	clear_pending (EV_P_ W w)
1389	{	1546	{
1390	if (w->pending)	1547	if (w->pending)
1391	{	1548	{
1392	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1393	w->pending = 0;	1550	w->pending = 0;
1394	}	1551	}
1395	}	1552	}
1396		1553
		1554	int
		1555	ev_clear_pending (EV_P_ void *w)
		1556	{
		1557	W w_ = (W)w;
		1558	int pending = w_->pending;
		1559
		1560	if (expect_true (pending))
		1561	{
		1562	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1563	w_->pending = 0;
		1564	p->w = 0;
		1565	return p->events;
		1566	}
		1567	else
		1568	return 0;
		1569	}
		1570
		1571	void inline_size
		1572	pri_adjust (EV_P_ W w)
		1573	{
		1574	int pri = w->priority;
		1575	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1576	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1577	w->priority = pri;
		1578	}
		1579
1397	void inline_speed	1580	void inline_speed
1398	ev_start (EV_P_ W w, int active)	1581	ev_start (EV_P_ W w, int active)
1399	{	1582	{
1400	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1583	pri_adjust (EV_A_ w);
1401	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1402
1403	w->active = active;	1584	w->active = active;
1404	ev_ref (EV_A);	1585	ev_ref (EV_A);
1405	}	1586	}
1406		1587
1407	void inline_size	1588	void inline_size
…		…
1411	w->active = 0;	1592	w->active = 0;
1412	}	1593	}
1413		1594
1414	/*****************************************************************************/	1595	/*****************************************************************************/
1415		1596
1416	void	1597	void noinline
1417	ev_io_start (EV_P_ ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
1418	{	1599	{
1419	int fd = w->fd;	1600	int fd = w->fd;
1420		1601
1421	if (expect_false (ev_is_active (w)))	1602	if (expect_false (ev_is_active (w)))
…		…
1423		1604
1424	assert (("ev_io_start called with negative fd", fd >= 0));	1605	assert (("ev_io_start called with negative fd", fd >= 0));
1425		1606
1426	ev_start (EV_A_ (W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
1427	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1428	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
1429		1610
1430	fd_change (EV_A_ fd);	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1612	w->events &= ~EV_IOFDSET;
1431	}	1613	}
1432		1614
1433	void	1615	void noinline
1434	ev_io_stop (EV_P_ ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
1435	{	1617	{
1436	ev_clear_pending (EV_A_ (W)w);	1618	clear_pending (EV_A_ (W)w);
1437	if (expect_false (!ev_is_active (w)))	1619	if (expect_false (!ev_is_active (w)))
1438	return;	1620	return;
1439		1621
1440	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1441		1623
1442	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
1443	ev_stop (EV_A_ (W)w);	1625	ev_stop (EV_A_ (W)w);
1444		1626
1445	fd_change (EV_A_ w->fd);	1627	fd_change (EV_A_ w->fd, 1);
1446	}	1628	}
1447		1629
1448	void	1630	void noinline
1449	ev_timer_start (EV_P_ ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
1450	{	1632	{
1451	if (expect_false (ev_is_active (w)))	1633	if (expect_false (ev_is_active (w)))
1452	return;	1634	return;
1453		1635
1454	((WT)w)->at += mn_now;	1636	((WT)w)->at += mn_now;
1455		1637
1456	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1457		1639
1458	ev_start (EV_A_ (W)w, ++timercnt);	1640	ev_start (EV_A_ (W)w, ++timercnt);
1459	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1460	timers [timercnt - 1] = w;	1642	timers [timercnt - 1] = (WT)w;
1461	upheap ((WT *)timers, timercnt - 1);	1643	upheap (timers, timercnt - 1);
1462		1644
1463	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1464	}	1646	}
1465		1647
1466	void	1648	void noinline
1467	ev_timer_stop (EV_P_ ev_timer *w)	1649	ev_timer_stop (EV_P_ ev_timer *w)
1468	{	1650	{
1469	ev_clear_pending (EV_A_ (W)w);	1651	clear_pending (EV_A_ (W)w);
1470	if (expect_false (!ev_is_active (w)))	1652	if (expect_false (!ev_is_active (w)))
1471	return;	1653	return;
1472		1654
1473	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1474		1656
		1657	{
		1658	int active = ((W)w)->active;
		1659
1475	if (expect_true (((W)w)->active < timercnt--))	1660	if (expect_true (--active < --timercnt))
1476	{	1661	{
1477	timers [((W)w)->active - 1] = timers [timercnt];	1662	timers [active] = timers [timercnt];
1478	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1663	adjustheap (timers, timercnt, active);
1479	}	1664	}
		1665	}
1480		1666
1481	((WT)w)->at -= mn_now;	1667	((WT)w)->at -= mn_now;
1482		1668
1483	ev_stop (EV_A_ (W)w);	1669	ev_stop (EV_A_ (W)w);
1484	}	1670	}
1485		1671
1486	void	1672	void noinline
1487	ev_timer_again (EV_P_ ev_timer *w)	1673	ev_timer_again (EV_P_ ev_timer *w)
1488	{	1674	{
1489	if (ev_is_active (w))	1675	if (ev_is_active (w))
1490	{	1676	{
1491	if (w->repeat)	1677	if (w->repeat)
1492	{	1678	{
1493	((WT)w)->at = mn_now + w->repeat;	1679	((WT)w)->at = mn_now + w->repeat;
1494	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
1495	}	1681	}
1496	else	1682	else
1497	ev_timer_stop (EV_A_ w);	1683	ev_timer_stop (EV_A_ w);
1498	}	1684	}
1499	else if (w->repeat)	1685	else if (w->repeat)
…		…
1502	ev_timer_start (EV_A_ w);	1688	ev_timer_start (EV_A_ w);
1503	}	1689	}
1504	}	1690	}
1505		1691
1506	#if EV_PERIODIC_ENABLE	1692	#if EV_PERIODIC_ENABLE
1507	void	1693	void noinline
1508	ev_periodic_start (EV_P_ ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
1509	{	1695	{
1510	if (expect_false (ev_is_active (w)))	1696	if (expect_false (ev_is_active (w)))
1511	return;	1697	return;
1512		1698
…		…
1514	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1515	else if (w->interval)	1701	else if (w->interval)
1516	{	1702	{
1517	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1703	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1518	/* this formula differs from the one in periodic_reify because we do not always round up */	1704	/* this formula differs from the one in periodic_reify because we do not always round up */
1519	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1520	}	1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
1521		1709
1522	ev_start (EV_A_ (W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
1523	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1524	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
1525	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
1526		1714
1527	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1528	}	1716	}
1529		1717
1530	void	1718	void noinline
1531	ev_periodic_stop (EV_P_ ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
1532	{	1720	{
1533	ev_clear_pending (EV_A_ (W)w);	1721	clear_pending (EV_A_ (W)w);
1534	if (expect_false (!ev_is_active (w)))	1722	if (expect_false (!ev_is_active (w)))
1535	return;	1723	return;
1536		1724
1537	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1538		1726
		1727	{
		1728	int active = ((W)w)->active;
		1729
1539	if (expect_true (((W)w)->active < periodiccnt--))	1730	if (expect_true (--active < --periodiccnt))
1540	{	1731	{
1541	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
1542	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1733	adjustheap (periodics, periodiccnt, active);
1543	}	1734	}
		1735	}
1544		1736
1545	ev_stop (EV_A_ (W)w);	1737	ev_stop (EV_A_ (W)w);
1546	}	1738	}
1547		1739
1548	void	1740	void noinline
1549	ev_periodic_again (EV_P_ ev_periodic *w)	1741	ev_periodic_again (EV_P_ ev_periodic *w)
1550	{	1742	{
1551	/* TODO: use adjustheap and recalculation */	1743	/* TODO: use adjustheap and recalculation */
1552	ev_periodic_stop (EV_A_ w);	1744	ev_periodic_stop (EV_A_ w);
1553	ev_periodic_start (EV_A_ w);	1745	ev_periodic_start (EV_A_ w);
1554	}	1746	}
1555	#endif	1747	#endif
1556		1748
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	1749	#ifndef SA_RESTART
1639	# define SA_RESTART 0	1750	# define SA_RESTART 0
1640	#endif	1751	#endif
1641		1752
1642	void	1753	void noinline
1643	ev_signal_start (EV_P_ ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
1644	{	1755	{
1645	#if EV_MULTIPLICITY	1756	#if EV_MULTIPLICITY
1646	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1757	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1647	#endif	1758	#endif
1648	if (expect_false (ev_is_active (w)))	1759	if (expect_false (ev_is_active (w)))
1649	return;	1760	return;
1650		1761
1651	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1652		1763
		1764	{
		1765	#ifndef _WIN32
		1766	sigset_t full, prev;
		1767	sigfillset (&full);
		1768	sigprocmask (SIG_SETMASK, &full, &prev);
		1769	#endif
		1770
		1771	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1772
		1773	#ifndef _WIN32
		1774	sigprocmask (SIG_SETMASK, &prev, 0);
		1775	#endif
		1776	}
		1777
1653	ev_start (EV_A_ (W)w, 1);	1778	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);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
1656		1780
1657	if (!((WL)w)->next)	1781	if (!((WL)w)->next)
1658	{	1782	{
1659	#if _WIN32	1783	#if _WIN32
1660	signal (w->signum, sighandler);	1784	signal (w->signum, sighandler);
…		…
1666	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
1667	#endif	1791	#endif
1668	}	1792	}
1669	}	1793	}
1670		1794
1671	void	1795	void noinline
1672	ev_signal_stop (EV_P_ ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
1673	{	1797	{
1674	ev_clear_pending (EV_A_ (W)w);	1798	clear_pending (EV_A_ (W)w);
1675	if (expect_false (!ev_is_active (w)))	1799	if (expect_false (!ev_is_active (w)))
1676	return;	1800	return;
1677		1801
1678	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
1679	ev_stop (EV_A_ (W)w);	1803	ev_stop (EV_A_ (W)w);
1680		1804
1681	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
1682	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
1683	}	1807	}
…		…
1690	#endif	1814	#endif
1691	if (expect_false (ev_is_active (w)))	1815	if (expect_false (ev_is_active (w)))
1692	return;	1816	return;
1693		1817
1694	ev_start (EV_A_ (W)w, 1);	1818	ev_start (EV_A_ (W)w, 1);
1695	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1696	}	1820	}
1697		1821
1698	void	1822	void
1699	ev_child_stop (EV_P_ ev_child *w)	1823	ev_child_stop (EV_P_ ev_child *w)
1700	{	1824	{
1701	ev_clear_pending (EV_A_ (W)w);	1825	clear_pending (EV_A_ (W)w);
1702	if (expect_false (!ev_is_active (w)))	1826	if (expect_false (!ev_is_active (w)))
1703	return;	1827	return;
1704		1828
1705	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1830	ev_stop (EV_A_ (W)w);
		1831	}
		1832
		1833	#if EV_STAT_ENABLE
		1834
		1835	# ifdef _WIN32
		1836	# undef lstat
		1837	# define lstat(a,b) _stati64 (a,b)
		1838	# endif
		1839
		1840	#define DEF_STAT_INTERVAL 5.0074891
		1841	#define MIN_STAT_INTERVAL 0.1074891
		1842
		1843	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1844
		1845	#if EV_USE_INOTIFY
		1846	# define EV_INOTIFY_BUFSIZE 8192
		1847
		1848	static void noinline
		1849	infy_add (EV_P_ ev_stat *w)
		1850	{
		1851	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1852
		1853	if (w->wd < 0)
		1854	{
		1855	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1856
		1857	/* monitor some parent directory for speedup hints */
		1858	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1859	{
		1860	char path [4096];
		1861	strcpy (path, w->path);
		1862
		1863	do
		1864	{
		1865	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1866	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1867
		1868	char *pend = strrchr (path, '/');
		1869
		1870	if (!pend)
		1871	break; /* whoops, no '/', complain to your admin */
		1872
		1873	*pend = 0;
		1874	w->wd = inotify_add_watch (fs_fd, path, mask);
		1875	}
		1876	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1877	}
		1878	}
		1879	else
		1880	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1881
		1882	if (w->wd >= 0)
		1883	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1884	}
		1885
		1886	static void noinline
		1887	infy_del (EV_P_ ev_stat *w)
		1888	{
		1889	int slot;
		1890	int wd = w->wd;
		1891
		1892	if (wd < 0)
		1893	return;
		1894
		1895	w->wd = -2;
		1896	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1897	wlist_del (&fs_hash [slot].head, (WL)w);
		1898
		1899	/* remove this watcher, if others are watching it, they will rearm */
		1900	inotify_rm_watch (fs_fd, wd);
		1901	}
		1902
		1903	static void noinline
		1904	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1905	{
		1906	if (slot < 0)
		1907	/* overflow, need to check for all hahs slots */
		1908	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1909	infy_wd (EV_A_ slot, wd, ev);
		1910	else
		1911	{
		1912	WL w_;
		1913
		1914	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1915	{
		1916	ev_stat *w = (ev_stat *)w_;
		1917	w_ = w_->next; /* lets us remove this watcher and all before it */
		1918
		1919	if (w->wd == wd || wd == -1)
		1920	{
		1921	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1922	{
		1923	w->wd = -1;
		1924	infy_add (EV_A_ w); /* re-add, no matter what */
		1925	}
		1926
		1927	stat_timer_cb (EV_A_ &w->timer, 0);
		1928	}
		1929	}
		1930	}
		1931	}
		1932
		1933	static void
		1934	infy_cb (EV_P_ ev_io *w, int revents)
		1935	{
		1936	char buf [EV_INOTIFY_BUFSIZE];
		1937	struct inotify_event *ev = (struct inotify_event *)buf;
		1938	int ofs;
		1939	int len = read (fs_fd, buf, sizeof (buf));
		1940
		1941	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1942	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1943	}
		1944
		1945	void inline_size
		1946	infy_init (EV_P)
		1947	{
		1948	if (fs_fd != -2)
		1949	return;
		1950
		1951	fs_fd = inotify_init ();
		1952
		1953	if (fs_fd >= 0)
		1954	{
		1955	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1956	ev_set_priority (&fs_w, EV_MAXPRI);
		1957	ev_io_start (EV_A_ &fs_w);
		1958	}
		1959	}
		1960
		1961	void inline_size
		1962	infy_fork (EV_P)
		1963	{
		1964	int slot;
		1965
		1966	if (fs_fd < 0)
		1967	return;
		1968
		1969	close (fs_fd);
		1970	fs_fd = inotify_init ();
		1971
		1972	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1973	{
		1974	WL w_ = fs_hash [slot].head;
		1975	fs_hash [slot].head = 0;
		1976
		1977	while (w_)
		1978	{
		1979	ev_stat *w = (ev_stat *)w_;
		1980	w_ = w_->next; /* lets us add this watcher */
		1981
		1982	w->wd = -1;
		1983
		1984	if (fs_fd >= 0)
		1985	infy_add (EV_A_ w); /* re-add, no matter what */
		1986	else
		1987	ev_timer_start (EV_A_ &w->timer);
		1988	}
		1989
		1990	}
		1991	}
		1992
		1993	#endif
		1994
		1995	void
		1996	ev_stat_stat (EV_P_ ev_stat *w)
		1997	{
		1998	if (lstat (w->path, &w->attr) < 0)
		1999	w->attr.st_nlink = 0;
		2000	else if (!w->attr.st_nlink)
		2001	w->attr.st_nlink = 1;
		2002	}
		2003
		2004	static void noinline
		2005	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2006	{
		2007	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2008
		2009	/* we copy this here each the time so that */
		2010	/* prev has the old value when the callback gets invoked */
		2011	w->prev = w->attr;
		2012	ev_stat_stat (EV_A_ w);
		2013
		2014	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2015	if (
		2016	w->prev.st_dev != w->attr.st_dev
		2017	|| w->prev.st_ino != w->attr.st_ino
		2018	|| w->prev.st_mode != w->attr.st_mode
		2019	|| w->prev.st_nlink != w->attr.st_nlink
		2020	|| w->prev.st_uid != w->attr.st_uid
		2021	|| w->prev.st_gid != w->attr.st_gid
		2022	|| w->prev.st_rdev != w->attr.st_rdev
		2023	|| w->prev.st_size != w->attr.st_size
		2024	|| w->prev.st_atime != w->attr.st_atime
		2025	|| w->prev.st_mtime != w->attr.st_mtime
		2026	|| w->prev.st_ctime != w->attr.st_ctime
		2027	) {
		2028	#if EV_USE_INOTIFY
		2029	infy_del (EV_A_ w);
		2030	infy_add (EV_A_ w);
		2031	ev_stat_stat (EV_A_ w); /* avoid race... */
		2032	#endif
		2033
		2034	ev_feed_event (EV_A_ w, EV_STAT);
		2035	}
		2036	}
		2037
		2038	void
		2039	ev_stat_start (EV_P_ ev_stat *w)
		2040	{
		2041	if (expect_false (ev_is_active (w)))
		2042	return;
		2043
		2044	/* since we use memcmp, we need to clear any padding data etc. */
		2045	memset (&w->prev, 0, sizeof (ev_statdata));
		2046	memset (&w->attr, 0, sizeof (ev_statdata));
		2047
		2048	ev_stat_stat (EV_A_ w);
		2049
		2050	if (w->interval < MIN_STAT_INTERVAL)
		2051	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2052
		2053	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2054	ev_set_priority (&w->timer, ev_priority (w));
		2055
		2056	#if EV_USE_INOTIFY
		2057	infy_init (EV_A);
		2058
		2059	if (fs_fd >= 0)
		2060	infy_add (EV_A_ w);
		2061	else
		2062	#endif
		2063	ev_timer_start (EV_A_ &w->timer);
		2064
		2065	ev_start (EV_A_ (W)w, 1);
		2066	}
		2067
		2068	void
		2069	ev_stat_stop (EV_P_ ev_stat *w)
		2070	{
		2071	clear_pending (EV_A_ (W)w);
		2072	if (expect_false (!ev_is_active (w)))
		2073	return;
		2074
		2075	#if EV_USE_INOTIFY
		2076	infy_del (EV_A_ w);
		2077	#endif
		2078	ev_timer_stop (EV_A_ &w->timer);
		2079
		2080	ev_stop (EV_A_ (W)w);
		2081	}
		2082	#endif
		2083
		2084	#if EV_IDLE_ENABLE
		2085	void
		2086	ev_idle_start (EV_P_ ev_idle *w)
		2087	{
		2088	if (expect_false (ev_is_active (w)))
		2089	return;
		2090
		2091	pri_adjust (EV_A_ (W)w);
		2092
		2093	{
		2094	int active = ++idlecnt [ABSPRI (w)];
		2095
		2096	++idleall;
		2097	ev_start (EV_A_ (W)w, active);
		2098
		2099	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2100	idles [ABSPRI (w)][active - 1] = w;
		2101	}
		2102	}
		2103
		2104	void
		2105	ev_idle_stop (EV_P_ ev_idle *w)
		2106	{
		2107	clear_pending (EV_A_ (W)w);
		2108	if (expect_false (!ev_is_active (w)))
		2109	return;
		2110
		2111	{
		2112	int active = ((W)w)->active;
		2113
		2114	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2115	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2116
		2117	ev_stop (EV_A_ (W)w);
		2118	--idleall;
		2119	}
		2120	}
		2121	#endif
		2122
		2123	void
		2124	ev_prepare_start (EV_P_ ev_prepare *w)
		2125	{
		2126	if (expect_false (ev_is_active (w)))
		2127	return;
		2128
		2129	ev_start (EV_A_ (W)w, ++preparecnt);
		2130	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2131	prepares [preparecnt - 1] = w;
		2132	}
		2133
		2134	void
		2135	ev_prepare_stop (EV_P_ ev_prepare *w)
		2136	{
		2137	clear_pending (EV_A_ (W)w);
		2138	if (expect_false (!ev_is_active (w)))
		2139	return;
		2140
		2141	{
		2142	int active = ((W)w)->active;
		2143	prepares [active - 1] = prepares [--preparecnt];
		2144	((W)prepares [active - 1])->active = active;
		2145	}
		2146
		2147	ev_stop (EV_A_ (W)w);
		2148	}
		2149
		2150	void
		2151	ev_check_start (EV_P_ ev_check *w)
		2152	{
		2153	if (expect_false (ev_is_active (w)))
		2154	return;
		2155
		2156	ev_start (EV_A_ (W)w, ++checkcnt);
		2157	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2158	checks [checkcnt - 1] = w;
		2159	}
		2160
		2161	void
		2162	ev_check_stop (EV_P_ ev_check *w)
		2163	{
		2164	clear_pending (EV_A_ (W)w);
		2165	if (expect_false (!ev_is_active (w)))
		2166	return;
		2167
		2168	{
		2169	int active = ((W)w)->active;
		2170	checks [active - 1] = checks [--checkcnt];
		2171	((W)checks [active - 1])->active = active;
		2172	}
		2173
1706	ev_stop (EV_A_ (W)w);	2174	ev_stop (EV_A_ (W)w);
1707	}	2175	}
1708		2176
1709	#if EV_EMBED_ENABLE	2177	#if EV_EMBED_ENABLE
1710	void noinline	2178	void noinline
…		…
1743	}	2211	}
1744		2212
1745	void	2213	void
1746	ev_embed_stop (EV_P_ ev_embed *w)	2214	ev_embed_stop (EV_P_ ev_embed *w)
1747	{	2215	{
1748	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
1749	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
1750	return;	2218	return;
1751		2219
1752	ev_io_stop (EV_A_ &w->io);	2220	ev_io_stop (EV_A_ &w->io);
1753		2221
1754	ev_stop (EV_A_ (W)w);	2222	ev_stop (EV_A_ (W)w);
1755	}	2223	}
1756	#endif	2224	#endif
1757		2225
1758	#if EV_STAT_ENABLE	2226	#if EV_FORK_ENABLE
1759
1760	# ifdef _WIN32
1761	# define lstat(a,b) stat(a,b)
1762	# endif
1763
1764	void	2227	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)	2228	ev_fork_start (EV_P_ ev_fork *w)
1789	{	2229	{
1790	if (expect_false (ev_is_active (w)))	2230	if (expect_false (ev_is_active (w)))
1791	return;	2231	return;
1792		2232
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);	2233	ev_start (EV_A_ (W)w, ++forkcnt);
		2234	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2235	forks [forkcnt - 1] = w;
1804	}	2236	}
1805		2237
1806	void	2238	void
1807	ev_stat_stop (EV_P_ ev_stat *w)	2239	ev_fork_stop (EV_P_ ev_fork *w)
1808	{	2240	{
1809	ev_clear_pending (EV_A_ (W)w);	2241	clear_pending (EV_A_ (W)w);
1810	if (expect_false (!ev_is_active (w)))	2242	if (expect_false (!ev_is_active (w)))
1811	return;	2243	return;
1812		2244
1813	ev_timer_stop (EV_A_ &w->timer);	2245	{
		2246	int active = ((W)w)->active;
		2247	forks [active - 1] = forks [--forkcnt];
		2248	((W)forks [active - 1])->active = active;
		2249	}
1814		2250
1815	ev_stop (EV_A_ (W)w);	2251	ev_stop (EV_A_ (W)w);
1816	}	2252	}
1817	#endif	2253	#endif
1818		2254

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