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Comparing libev/ev.c (file contents):
Revision 1.134 by root, Fri Nov 23 19:13:33 2007 UTC vs.
Revision 1.178 by root, Tue Dec 11 18:36:11 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 struct ev_watcher *W;	262	typedef ev_watcher *W;
208	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
209	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
210		265
211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
212		267
213	#ifdef _WIN32	268	#ifdef _WIN32
214	# include "ev_win32.c"	269	# include "ev_win32.c"
…		…
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_size
		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	if (expect_false (!w_->cb))
403	return;
404
405	w_->pending = ++pendingcnt [ABSPRI (w_)];
406	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
407	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
408	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
409	}
410
411	static void
412	queue_events (EV_P_ W *events, int eventcnt, int type)
413	{
414	int i;
415
416	for (i = 0; i < eventcnt; ++i)
417	ev_feed_event (EV_A_ events [i], type);
418	}
419
420	inline void
421	fd_event (EV_P_ int fd, int revents)	506	fd_event (EV_P_ int fd, int revents)
422	{	507	{
423	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
424	struct ev_io *w;	509	ev_io *w;
425		510
426	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
427	{	512	{
428	int ev = w->events & revents;	513	int ev = w->events & revents;
429		514
430	if (ev)	515	if (ev)
431	ev_feed_event (EV_A_ (W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
…		…
433	}	518	}
434		519
435	void	520	void
436	ev_feed_fd_event (EV_P_ int fd, int revents)	521	ev_feed_fd_event (EV_P_ int fd, int revents)
437	{	522	{
		523	if (fd >= 0 && fd < anfdmax)
438	fd_event (EV_A_ fd, revents);	524	fd_event (EV_A_ fd, revents);
439	}	525	}
440		526
441	/*****************************************************************************/	527	void inline_size
442
443	inline void
444	fd_reify (EV_P)	528	fd_reify (EV_P)
445	{	529	{
446	int i;	530	int i;
447		531
448	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
449	{	533	{
450	int fd = fdchanges [i];	534	int fd = fdchanges [i];
451	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
452	struct ev_io *w;	536	ev_io *w;
453		537
454	int events = 0;	538	int events = 0;
455		539
456	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
457	events |= w->events;	541	events |= w->events;
458		542
459	#if EV_SELECT_IS_WINSOCKET	543	#if EV_SELECT_IS_WINSOCKET
460	if (events)	544	if (events)
461	{	545	{
…		…
472	}	556	}
473		557
474	fdchangecnt = 0;	558	fdchangecnt = 0;
475	}	559	}
476		560
477	static void	561	void inline_size
478	fd_change (EV_P_ int fd)	562	fd_change (EV_P_ int fd)
479	{	563	{
480	if (expect_false (anfds [fd].reify))	564	if (expect_false (anfds [fd].reify))
481	return;	565	return;
482		566
…		…
485	++fdchangecnt;	569	++fdchangecnt;
486	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
487	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
488	}	572	}
489		573
490	static void	574	void inline_speed
491	fd_kill (EV_P_ int fd)	575	fd_kill (EV_P_ int fd)
492	{	576	{
493	struct ev_io *w;	577	ev_io *w;
494		578
495	while ((w = (struct ev_io *)anfds [fd].head))	579	while ((w = (ev_io *)anfds [fd].head))
496	{	580	{
497	ev_io_stop (EV_A_ w);	581	ev_io_stop (EV_A_ w);
498	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);
499	}	583	}
500	}	584	}
501		585
502	inline int	586	int inline_size
503	fd_valid (int fd)	587	fd_valid (int fd)
504	{	588	{
505	#ifdef _WIN32	589	#ifdef _WIN32
506	return _get_osfhandle (fd) != -1;	590	return _get_osfhandle (fd) != -1;
507	#else	591	#else
508	return fcntl (fd, F_GETFD) != -1;	592	return fcntl (fd, F_GETFD) != -1;
509	#endif	593	#endif
510	}	594	}
511		595
512	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
513	static void	597	static void noinline
514	fd_ebadf (EV_P)	598	fd_ebadf (EV_P)
515	{	599	{
516	int fd;	600	int fd;
517		601
518	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
…		…
520	if (!fd_valid (fd) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
521	fd_kill (EV_A_ fd);	605	fd_kill (EV_A_ fd);
522	}	606	}
523		607
524	/* 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 */
525	static void	609	static void noinline
526	fd_enomem (EV_P)	610	fd_enomem (EV_P)
527	{	611	{
528	int fd;	612	int fd;
529		613
530	for (fd = anfdmax; fd--; )	614	for (fd = anfdmax; fd--; )
…		…
534	return;	618	return;
535	}	619	}
536	}	620	}
537		621
538	/* 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 */
539	static void	623	static void noinline
540	fd_rearm_all (EV_P)	624	fd_rearm_all (EV_P)
541	{	625	{
542	int fd;	626	int fd;
543		627
544	/* this should be highly optimised to not do anything but set a flag */
545	for (fd = 0; fd < anfdmax; ++fd)	628	for (fd = 0; fd < anfdmax; ++fd)
546	if (anfds [fd].events)	629	if (anfds [fd].events)
547	{	630	{
548	anfds [fd].events = 0;	631	anfds [fd].events = 0;
549	fd_change (EV_A_ fd);	632	fd_change (EV_A_ fd);
550	}	633	}
551	}	634	}
552		635
553	/*****************************************************************************/	636	/*****************************************************************************/
554		637
555	static void	638	void inline_speed
556	upheap (WT *heap, int k)	639	upheap (WT *heap, int k)
557	{	640	{
558	WT w = heap [k];	641	WT w = heap [k];
559		642
560	while (k && heap [k >> 1]->at > w->at)	643	while (k && heap [k >> 1]->at > w->at)
…		…
567	heap [k] = w;	650	heap [k] = w;
568	((W)heap [k])->active = k + 1;	651	((W)heap [k])->active = k + 1;
569		652
570	}	653	}
571		654
572	static void	655	void inline_speed
573	downheap (WT *heap, int N, int k)	656	downheap (WT *heap, int N, int k)
574	{	657	{
575	WT w = heap [k];	658	WT w = heap [k];
576		659
577	while (k < (N >> 1))	660	while (k < (N >> 1))
…		…
591		674
592	heap [k] = w;	675	heap [k] = w;
593	((W)heap [k])->active = k + 1;	676	((W)heap [k])->active = k + 1;
594	}	677	}
595		678
596	inline void	679	void inline_size
597	adjustheap (WT *heap, int N, int k)	680	adjustheap (WT *heap, int N, int k)
598	{	681	{
599	upheap (heap, k);	682	upheap (heap, k);
600	downheap (heap, N, k);	683	downheap (heap, N, k);
601	}	684	}
…		…
611	static ANSIG *signals;	694	static ANSIG *signals;
612	static int signalmax;	695	static int signalmax;
613		696
614	static int sigpipe [2];	697	static int sigpipe [2];
615	static sig_atomic_t volatile gotsig;	698	static sig_atomic_t volatile gotsig;
616	static struct ev_io sigev;	699	static ev_io sigev;
617		700
618	static void	701	void inline_size
619	signals_init (ANSIG *base, int count)	702	signals_init (ANSIG *base, int count)
620	{	703	{
621	while (count--)	704	while (count--)
622	{	705	{
623	base->head = 0;	706	base->head = 0;
…		…
643	write (sigpipe [1], &signum, 1);	726	write (sigpipe [1], &signum, 1);
644	errno = old_errno;	727	errno = old_errno;
645	}	728	}
646	}	729	}
647		730
648	void	731	void noinline
649	ev_feed_signal_event (EV_P_ int signum)	732	ev_feed_signal_event (EV_P_ int signum)
650	{	733	{
651	WL w;	734	WL w;
652		735
653	#if EV_MULTIPLICITY	736	#if EV_MULTIPLICITY
…		…
664	for (w = signals [signum].head; w; w = w->next)	747	for (w = signals [signum].head; w; w = w->next)
665	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	748	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
666	}	749	}
667		750
668	static void	751	static void
669	sigcb (EV_P_ struct ev_io *iow, int revents)	752	sigcb (EV_P_ ev_io *iow, int revents)
670	{	753	{
671	int signum;	754	int signum;
672		755
673	read (sigpipe [0], &revents, 1);	756	read (sigpipe [0], &revents, 1);
674	gotsig = 0;	757	gotsig = 0;
…		…
676	for (signum = signalmax; signum--; )	759	for (signum = signalmax; signum--; )
677	if (signals [signum].gotsig)	760	if (signals [signum].gotsig)
678	ev_feed_signal_event (EV_A_ signum + 1);	761	ev_feed_signal_event (EV_A_ signum + 1);
679	}	762	}
680		763
681	static void	764	void inline_speed
682	fd_intern (int fd)	765	fd_intern (int fd)
683	{	766	{
684	#ifdef _WIN32	767	#ifdef _WIN32
685	int arg = 1;	768	int arg = 1;
686	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	769	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
688	fcntl (fd, F_SETFD, FD_CLOEXEC);	771	fcntl (fd, F_SETFD, FD_CLOEXEC);
689	fcntl (fd, F_SETFL, O_NONBLOCK);	772	fcntl (fd, F_SETFL, O_NONBLOCK);
690	#endif	773	#endif
691	}	774	}
692		775
693	static void	776	static void noinline
694	siginit (EV_P)	777	siginit (EV_P)
695	{	778	{
696	fd_intern (sigpipe [0]);	779	fd_intern (sigpipe [0]);
697	fd_intern (sigpipe [1]);	780	fd_intern (sigpipe [1]);
698		781
…		…
701	ev_unref (EV_A); /* child watcher should not keep loop alive */	784	ev_unref (EV_A); /* child watcher should not keep loop alive */
702	}	785	}
703		786
704	/*****************************************************************************/	787	/*****************************************************************************/
705		788
706	static struct ev_child *childs [PID_HASHSIZE];	789	static ev_child *childs [EV_PID_HASHSIZE];
707		790
708	#ifndef _WIN32	791	#ifndef _WIN32
709		792
710	static struct ev_signal childev;	793	static ev_signal childev;
		794
		795	void inline_speed
		796	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		797	{
		798	ev_child *w;
		799
		800	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		801	if (w->pid == pid || !w->pid)
		802	{
		803	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
		804	w->rpid = pid;
		805	w->rstatus = status;
		806	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		807	}
		808	}
711		809
712	#ifndef WCONTINUED	810	#ifndef WCONTINUED
713	# define WCONTINUED 0	811	# define WCONTINUED 0
714	#endif	812	#endif
715		813
716	static void	814	static void
717	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
718	{
719	struct ev_child *w;
720
721	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
722	if (w->pid == pid || !w->pid)
723	{
724	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
725	w->rpid = pid;
726	w->rstatus = status;
727	ev_feed_event (EV_A_ (W)w, EV_CHILD);
728	}
729	}
730
731	static void
732	childcb (EV_P_ struct ev_signal *sw, int revents)	815	childcb (EV_P_ ev_signal *sw, int revents)
733	{	816	{
734	int pid, status;	817	int pid, status;
735		818
		819	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
736	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	820	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
737	{	821	if (!WCONTINUED
		822	|| errno != EINVAL
		823	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		824	return;
		825
738	/* make sure we are called again until all childs have been reaped */	826	/* make sure we are called again until all childs have been reaped */
739	/* we need to do it this way so that the callback gets called before we continue */	827	/* we need to do it this way so that the callback gets called before we continue */
740	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	828	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
741		829
742	child_reap (EV_A_ sw, pid, pid, status);	830	child_reap (EV_A_ sw, pid, pid, status);
		831	if (EV_PID_HASHSIZE > 1)
743	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	832	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
744	}
745	}	833	}
746		834
747	#endif	835	#endif
748		836
749	/*****************************************************************************/	837	/*****************************************************************************/
…		…
775	{	863	{
776	return EV_VERSION_MINOR;	864	return EV_VERSION_MINOR;
777	}	865	}
778		866
779	/* return true if we are running with elevated privileges and should ignore env variables */	867	/* return true if we are running with elevated privileges and should ignore env variables */
780	static int	868	int inline_size
781	enable_secure (void)	869	enable_secure (void)
782	{	870	{
783	#ifdef _WIN32	871	#ifdef _WIN32
784	return 0;	872	return 0;
785	#else	873	#else
…		…
832	ev_backend (EV_P)	920	ev_backend (EV_P)
833	{	921	{
834	return backend;	922	return backend;
835	}	923	}
836		924
837	static void	925	unsigned int
		926	ev_loop_count (EV_P)
		927	{
		928	return loop_count;
		929	}
		930
		931	static void noinline
838	loop_init (EV_P_ unsigned int flags)	932	loop_init (EV_P_ unsigned int flags)
839	{	933	{
840	if (!backend)	934	if (!backend)
841	{	935	{
842	#if EV_USE_MONOTONIC	936	#if EV_USE_MONOTONIC
…		…
850	ev_rt_now = ev_time ();	944	ev_rt_now = ev_time ();
851	mn_now = get_clock ();	945	mn_now = get_clock ();
852	now_floor = mn_now;	946	now_floor = mn_now;
853	rtmn_diff = ev_rt_now - mn_now;	947	rtmn_diff = ev_rt_now - mn_now;
854		948
		949	/* pid check not overridable via env */
		950	#ifndef _WIN32
		951	if (flags & EVFLAG_FORKCHECK)
		952	curpid = getpid ();
		953	#endif
		954
855	if (!(flags & EVFLAG_NOENV)	955	if (!(flags & EVFLAG_NOENV)
856	&& !enable_secure ()	956	&& !enable_secure ()
857	&& getenv ("LIBEV_FLAGS"))	957	&& getenv ("LIBEV_FLAGS"))
858	flags = atoi (getenv ("LIBEV_FLAGS"));	958	flags = atoi (getenv ("LIBEV_FLAGS"));
859		959
860	if (!(flags & 0x0000ffffUL))	960	if (!(flags & 0x0000ffffUL))
861	flags |= ev_recommended_backends ();	961	flags |= ev_recommended_backends ();
862		962
863	backend = 0;	963	backend = 0;
		964	backend_fd = -1;
		965	#if EV_USE_INOTIFY
		966	fs_fd = -2;
		967	#endif
		968
864	#if EV_USE_PORT	969	#if EV_USE_PORT
865	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	970	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
866	#endif	971	#endif
867	#if EV_USE_KQUEUE	972	#if EV_USE_KQUEUE
868	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	973	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
880	ev_init (&sigev, sigcb);	985	ev_init (&sigev, sigcb);
881	ev_set_priority (&sigev, EV_MAXPRI);	986	ev_set_priority (&sigev, EV_MAXPRI);
882	}	987	}
883	}	988	}
884		989
885	static void	990	static void noinline
886	loop_destroy (EV_P)	991	loop_destroy (EV_P)
887	{	992	{
888	int i;	993	int i;
		994
		995	#if EV_USE_INOTIFY
		996	if (fs_fd >= 0)
		997	close (fs_fd);
		998	#endif
		999
		1000	if (backend_fd >= 0)
		1001	close (backend_fd);
889		1002
890	#if EV_USE_PORT	1003	#if EV_USE_PORT
891	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1004	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
892	#endif	1005	#endif
893	#if EV_USE_KQUEUE	1006	#if EV_USE_KQUEUE
…		…
902	#if EV_USE_SELECT	1015	#if EV_USE_SELECT
903	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1016	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
904	#endif	1017	#endif
905		1018
906	for (i = NUMPRI; i--; )	1019	for (i = NUMPRI; i--; )
		1020	{
907	array_free (pending, [i]);	1021	array_free (pending, [i]);
		1022	#if EV_IDLE_ENABLE
		1023	array_free (idle, [i]);
		1024	#endif
		1025	}
908		1026
909	/* have to use the microsoft-never-gets-it-right macro */	1027	/* have to use the microsoft-never-gets-it-right macro */
910	array_free (fdchange, EMPTY0);	1028	array_free (fdchange, EMPTY);
911	array_free (timer, EMPTY0);	1029	array_free (timer, EMPTY);
912	#if EV_PERIODICS	1030	#if EV_PERIODIC_ENABLE
913	array_free (periodic, EMPTY0);	1031	array_free (periodic, EMPTY);
914	#endif	1032	#endif
915	array_free (idle, EMPTY0);
916	array_free (prepare, EMPTY0);	1033	array_free (prepare, EMPTY);
917	array_free (check, EMPTY0);	1034	array_free (check, EMPTY);
918		1035
919	backend = 0;	1036	backend = 0;
920	}	1037	}
921		1038
922	static void	1039	void inline_size infy_fork (EV_P);
		1040
		1041	void inline_size
923	loop_fork (EV_P)	1042	loop_fork (EV_P)
924	{	1043	{
925	#if EV_USE_PORT	1044	#if EV_USE_PORT
926	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1045	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
927	#endif	1046	#endif
928	#if EV_USE_KQUEUE	1047	#if EV_USE_KQUEUE
929	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1048	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
930	#endif	1049	#endif
931	#if EV_USE_EPOLL	1050	#if EV_USE_EPOLL
932	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1051	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1052	#endif
		1053	#if EV_USE_INOTIFY
		1054	infy_fork (EV_A);
933	#endif	1055	#endif
934		1056
935	if (ev_is_active (&sigev))	1057	if (ev_is_active (&sigev))
936	{	1058	{
937	/* default loop */	1059	/* default loop */
…		…
1053	postfork = 1;	1175	postfork = 1;
1054	}	1176	}
1055		1177
1056	/*****************************************************************************/	1178	/*****************************************************************************/
1057		1179
1058	static int	1180	void
1059	any_pending (EV_P)	1181	ev_invoke (EV_P_ void *w, int revents)
1060	{	1182	{
1061	int pri;	1183	EV_CB_INVOKE ((W)w, revents);
1062
1063	for (pri = NUMPRI; pri--; )
1064	if (pendingcnt [pri])
1065	return 1;
1066
1067	return 0;
1068	}	1184	}
1069		1185
1070	inline void	1186	void inline_speed
1071	call_pending (EV_P)	1187	call_pending (EV_P)
1072	{	1188	{
1073	int pri;	1189	int pri;
1074		1190
1075	for (pri = NUMPRI; pri--; )	1191	for (pri = NUMPRI; pri--; )
…		…
1077	{	1193	{
1078	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1194	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1079		1195
1080	if (expect_true (p->w))	1196	if (expect_true (p->w))
1081	{	1197	{
		1198	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1199
1082	p->w->pending = 0;	1200	p->w->pending = 0;
1083	EV_CB_INVOKE (p->w, p->events);	1201	EV_CB_INVOKE (p->w, p->events);
1084	}	1202	}
1085	}	1203	}
1086	}	1204	}
1087		1205
1088	inline void	1206	void inline_size
1089	timers_reify (EV_P)	1207	timers_reify (EV_P)
1090	{	1208	{
1091	while (timercnt && ((WT)timers [0])->at <= mn_now)	1209	while (timercnt && ((WT)timers [0])->at <= mn_now)
1092	{	1210	{
1093	struct ev_timer *w = timers [0];	1211	ev_timer *w = timers [0];
1094		1212
1095	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1213	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1096		1214
1097	/* first reschedule or stop timer */	1215	/* first reschedule or stop timer */
1098	if (w->repeat)	1216	if (w->repeat)
1099	{	1217	{
1100	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1218	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
…		…
1110		1228
1111	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1229	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1112	}	1230	}
1113	}	1231	}
1114		1232
1115	#if EV_PERIODICS	1233	#if EV_PERIODIC_ENABLE
1116	inline void	1234	void inline_size
1117	periodics_reify (EV_P)	1235	periodics_reify (EV_P)
1118	{	1236	{
1119	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1237	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1120	{	1238	{
1121	struct ev_periodic *w = periodics [0];	1239	ev_periodic *w = periodics [0];
1122		1240
1123	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1241	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1124		1242
1125	/* first reschedule or stop timer */	1243	/* first reschedule or stop timer */
1126	if (w->reschedule_cb)	1244	if (w->reschedule_cb)
1127	{	1245	{
1128	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1246	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1129	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1247	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1130	downheap ((WT *)periodics, periodiccnt, 0);	1248	downheap ((WT *)periodics, periodiccnt, 0);
1131	}	1249	}
1132	else if (w->interval)	1250	else if (w->interval)
1133	{	1251	{
1134	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1252	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1253	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1135	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1254	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1136	downheap ((WT *)periodics, periodiccnt, 0);	1255	downheap ((WT *)periodics, periodiccnt, 0);
1137	}	1256	}
1138	else	1257	else
1139	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1258	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1140		1259
1141	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1260	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1142	}	1261	}
1143	}	1262	}
1144		1263
1145	static void	1264	static void noinline
1146	periodics_reschedule (EV_P)	1265	periodics_reschedule (EV_P)
1147	{	1266	{
1148	int i;	1267	int i;
1149		1268
1150	/* adjust periodics after time jump */	1269	/* adjust periodics after time jump */
1151	for (i = 0; i < periodiccnt; ++i)	1270	for (i = 0; i < periodiccnt; ++i)
1152	{	1271	{
1153	struct ev_periodic *w = periodics [i];	1272	ev_periodic *w = periodics [i];
1154		1273
1155	if (w->reschedule_cb)	1274	if (w->reschedule_cb)
1156	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1275	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1157	else if (w->interval)	1276	else if (w->interval)
1158	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1277	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1159	}	1278	}
1160		1279
1161	/* now rebuild the heap */	1280	/* now rebuild the heap */
1162	for (i = periodiccnt >> 1; i--; )	1281	for (i = periodiccnt >> 1; i--; )
1163	downheap ((WT *)periodics, periodiccnt, i);	1282	downheap ((WT *)periodics, periodiccnt, i);
1164	}	1283	}
1165	#endif	1284	#endif
1166		1285
1167	inline int	1286	#if EV_IDLE_ENABLE
1168	time_update_monotonic (EV_P)	1287	void inline_size
		1288	idle_reify (EV_P)
1169	{	1289	{
		1290	if (expect_false (idleall))
		1291	{
		1292	int pri;
		1293
		1294	for (pri = NUMPRI; pri--; )
		1295	{
		1296	if (pendingcnt [pri])
		1297	break;
		1298
		1299	if (idlecnt [pri])
		1300	{
		1301	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1302	break;
		1303	}
		1304	}
		1305	}
		1306	}
		1307	#endif
		1308
		1309	void inline_speed
		1310	time_update (EV_P_ ev_tstamp max_block)
		1311	{
		1312	int i;
		1313
		1314	#if EV_USE_MONOTONIC
		1315	if (expect_true (have_monotonic))
		1316	{
		1317	ev_tstamp odiff = rtmn_diff;
		1318
1170	mn_now = get_clock ();	1319	mn_now = get_clock ();
1171		1320
		1321	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1322	/* interpolate in the meantime */
1172	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1323	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1173	{	1324	{
1174	ev_rt_now = rtmn_diff + mn_now;	1325	ev_rt_now = rtmn_diff + mn_now;
1175	return 0;	1326	return;
1176	}	1327	}
1177	else	1328
1178	{
1179	now_floor = mn_now;	1329	now_floor = mn_now;
1180	ev_rt_now = ev_time ();	1330	ev_rt_now = ev_time ();
1181	return 1;
1182	}
1183	}
1184		1331
1185	inline void	1332	/* loop a few times, before making important decisions.
1186	time_update (EV_P)	1333	* on the choice of "4": one iteration isn't enough,
1187	{	1334	* in case we get preempted during the calls to
1188	int i;	1335	* ev_time and get_clock. a second call is almost guaranteed
1189		1336	* to succeed in that case, though. and looping a few more times
1190	#if EV_USE_MONOTONIC	1337	* doesn't hurt either as we only do this on time-jumps or
1191	if (expect_true (have_monotonic))	1338	* in the unlikely event of having been preempted here.
1192	{	1339	*/
1193	if (time_update_monotonic (EV_A))	1340	for (i = 4; --i; )
1194	{	1341	{
1195	ev_tstamp odiff = rtmn_diff;
1196
1197	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1198	{
1199	rtmn_diff = ev_rt_now - mn_now;	1342	rtmn_diff = ev_rt_now - mn_now;
1200		1343
1201	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1344	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1202	return; /* all is well */	1345	return; /* all is well */
1203		1346
1204	ev_rt_now = ev_time ();	1347	ev_rt_now = ev_time ();
1205	mn_now = get_clock ();	1348	mn_now = get_clock ();
1206	now_floor = mn_now;	1349	now_floor = mn_now;
1207	}	1350	}
1208		1351
1209	# if EV_PERIODICS	1352	# if EV_PERIODIC_ENABLE
		1353	periodics_reschedule (EV_A);
		1354	# endif
		1355	/* no timer adjustment, as the monotonic clock doesn't jump */
		1356	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1357	}
		1358	else
		1359	#endif
		1360	{
		1361	ev_rt_now = ev_time ();
		1362
		1363	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1364	{
		1365	#if EV_PERIODIC_ENABLE
1210	periodics_reschedule (EV_A);	1366	periodics_reschedule (EV_A);
1211	# endif	1367	#endif
1212	/* no timer adjustment, as the monotonic clock doesn't jump */
1213	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1214	}
1215	}
1216	else
1217	#endif
1218	{
1219	ev_rt_now = ev_time ();
1220
1221	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1222	{
1223	#if EV_PERIODICS
1224	periodics_reschedule (EV_A);
1225	#endif
1226
1227	/* adjust timers. this is easy, as the offset is the same for all */	1368	/* adjust timers. this is easy, as the offset is the same for all of them */
1228	for (i = 0; i < timercnt; ++i)	1369	for (i = 0; i < timercnt; ++i)
1229	((WT)timers [i])->at += ev_rt_now - mn_now;	1370	((WT)timers [i])->at += ev_rt_now - mn_now;
1230	}	1371	}
1231		1372
1232	mn_now = ev_rt_now;	1373	mn_now = ev_rt_now;
…		…
1248	static int loop_done;	1389	static int loop_done;
1249		1390
1250	void	1391	void
1251	ev_loop (EV_P_ int flags)	1392	ev_loop (EV_P_ int flags)
1252	{	1393	{
1253	double block;
1254	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1394	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1395	? EVUNLOOP_ONE
		1396	: EVUNLOOP_CANCEL;
1255		1397
1256	while (activecnt)	1398	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1399
		1400	do
1257	{	1401	{
		1402	#ifndef _WIN32
		1403	if (expect_false (curpid)) /* penalise the forking check even more */
		1404	if (expect_false (getpid () != curpid))
		1405	{
		1406	curpid = getpid ();
		1407	postfork = 1;
		1408	}
		1409	#endif
		1410
		1411	#if EV_FORK_ENABLE
		1412	/* we might have forked, so queue fork handlers */
		1413	if (expect_false (postfork))
		1414	if (forkcnt)
		1415	{
		1416	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1417	call_pending (EV_A);
		1418	}
		1419	#endif
		1420
1258	/* queue check watchers (and execute them) */	1421	/* queue prepare watchers (and execute them) */
1259	if (expect_false (preparecnt))	1422	if (expect_false (preparecnt))
1260	{	1423	{
1261	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1424	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1262	call_pending (EV_A);	1425	call_pending (EV_A);
1263	}	1426	}
1264		1427
		1428	if (expect_false (!activecnt))
		1429	break;
		1430
1265	/* we might have forked, so reify kernel state if necessary */	1431	/* we might have forked, so reify kernel state if necessary */
1266	if (expect_false (postfork))	1432	if (expect_false (postfork))
1267	loop_fork (EV_A);	1433	loop_fork (EV_A);
1268		1434
1269	/* update fd-related kernel structures */	1435	/* update fd-related kernel structures */
1270	fd_reify (EV_A);	1436	fd_reify (EV_A);
1271		1437
1272	/* calculate blocking time */	1438	/* calculate blocking time */
		1439	{
		1440	ev_tstamp block;
1273		1441
1274	/* we only need this for !monotonic clock or timers, but as we basically	1442	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
1275	always have timers, we just calculate it always */	1443	block = 0.; /* do not block at all */
1276	#if EV_USE_MONOTONIC
1277	if (expect_true (have_monotonic))
1278	time_update_monotonic (EV_A);
1279	else	1444	else
1280	#endif
1281	{	1445	{
1282	ev_rt_now = ev_time ();	1446	/* update time to cancel out callback processing overhead */
1283	mn_now = ev_rt_now;	1447	time_update (EV_A_ 1e100);
1284	}
1285		1448
1286	if (flags & EVLOOP_NONBLOCK || idlecnt)
1287	block = 0.;
1288	else
1289	{
1290	block = MAX_BLOCKTIME;	1449	block = MAX_BLOCKTIME;
1291		1450
1292	if (timercnt)	1451	if (timercnt)
1293	{	1452	{
1294	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1453	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1295	if (block > to) block = to;	1454	if (block > to) block = to;
1296	}	1455	}
1297		1456
1298	#if EV_PERIODICS	1457	#if EV_PERIODIC_ENABLE
1299	if (periodiccnt)	1458	if (periodiccnt)
1300	{	1459	{
1301	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1460	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1302	if (block > to) block = to;	1461	if (block > to) block = to;
1303	}	1462	}
1304	#endif	1463	#endif
1305		1464
1306	if (expect_false (block < 0.)) block = 0.;	1465	if (expect_false (block < 0.)) block = 0.;
1307	}	1466	}
1308		1467
		1468	++loop_count;
1309	backend_poll (EV_A_ block);	1469	backend_poll (EV_A_ block);
1310		1470
1311	/* update ev_rt_now, do magic */	1471	/* update ev_rt_now, do magic */
1312	time_update (EV_A);	1472	time_update (EV_A_ block);
		1473	}
1313		1474
1314	/* queue pending timers and reschedule them */	1475	/* queue pending timers and reschedule them */
1315	timers_reify (EV_A); /* relative timers called last */	1476	timers_reify (EV_A); /* relative timers called last */
1316	#if EV_PERIODICS	1477	#if EV_PERIODIC_ENABLE
1317	periodics_reify (EV_A); /* absolute timers called first */	1478	periodics_reify (EV_A); /* absolute timers called first */
1318	#endif	1479	#endif
1319		1480
		1481	#if EV_IDLE_ENABLE
1320	/* queue idle watchers unless io or timers are pending */	1482	/* queue idle watchers unless other events are pending */
1321	if (idlecnt && !any_pending (EV_A))	1483	idle_reify (EV_A);
1322	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1484	#endif
1323		1485
1324	/* queue check watchers, to be executed first */	1486	/* queue check watchers, to be executed first */
1325	if (expect_false (checkcnt))	1487	if (expect_false (checkcnt))
1326	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1488	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1327		1489
1328	call_pending (EV_A);	1490	call_pending (EV_A);
1329		1491
1330	if (expect_false (loop_done))
1331	break;
1332	}	1492	}
		1493	while (expect_true (activecnt && !loop_done));
1333		1494
1334	if (loop_done != 2)	1495	if (loop_done == EVUNLOOP_ONE)
1335	loop_done = 0;	1496	loop_done = EVUNLOOP_CANCEL;
1336	}	1497	}
1337		1498
1338	void	1499	void
1339	ev_unloop (EV_P_ int how)	1500	ev_unloop (EV_P_ int how)
1340	{	1501	{
1341	loop_done = how;	1502	loop_done = how;
1342	}	1503	}
1343		1504
1344	/*****************************************************************************/	1505	/*****************************************************************************/
1345		1506
1346	inline void	1507	void inline_size
1347	wlist_add (WL *head, WL elem)	1508	wlist_add (WL *head, WL elem)
1348	{	1509	{
1349	elem->next = *head;	1510	elem->next = *head;
1350	*head = elem;	1511	*head = elem;
1351	}	1512	}
1352		1513
1353	inline void	1514	void inline_size
1354	wlist_del (WL *head, WL elem)	1515	wlist_del (WL *head, WL elem)
1355	{	1516	{
1356	while (*head)	1517	while (*head)
1357	{	1518	{
1358	if (*head == elem)	1519	if (*head == elem)
…		…
1363		1524
1364	head = &(*head)->next;	1525	head = &(*head)->next;
1365	}	1526	}
1366	}	1527	}
1367		1528
1368	inline void	1529	void inline_speed
1369	ev_clear_pending (EV_P_ W w)	1530	clear_pending (EV_P_ W w)
1370	{	1531	{
1371	if (w->pending)	1532	if (w->pending)
1372	{	1533	{
1373	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1534	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1374	w->pending = 0;	1535	w->pending = 0;
1375	}	1536	}
1376	}	1537	}
1377		1538
1378	inline void	1539	int
		1540	ev_clear_pending (EV_P_ void *w)
		1541	{
		1542	W w_ = (W)w;
		1543	int pending = w_->pending;
		1544
		1545	if (expect_true (pending))
		1546	{
		1547	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1548	w_->pending = 0;
		1549	p->w = 0;
		1550	return p->events;
		1551	}
		1552	else
		1553	return 0;
		1554	}
		1555
		1556	void inline_size
		1557	pri_adjust (EV_P_ W w)
		1558	{
		1559	int pri = w->priority;
		1560	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1561	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1562	w->priority = pri;
		1563	}
		1564
		1565	void inline_speed
1379	ev_start (EV_P_ W w, int active)	1566	ev_start (EV_P_ W w, int active)
1380	{	1567	{
1381	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1568	pri_adjust (EV_A_ w);
1382	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1383
1384	w->active = active;	1569	w->active = active;
1385	ev_ref (EV_A);	1570	ev_ref (EV_A);
1386	}	1571	}
1387		1572
1388	inline void	1573	void inline_size
1389	ev_stop (EV_P_ W w)	1574	ev_stop (EV_P_ W w)
1390	{	1575	{
1391	ev_unref (EV_A);	1576	ev_unref (EV_A);
1392	w->active = 0;	1577	w->active = 0;
1393	}	1578	}
1394		1579
1395	/*****************************************************************************/	1580	/*****************************************************************************/
1396		1581
1397	void	1582	void noinline
1398	ev_io_start (EV_P_ struct ev_io *w)	1583	ev_io_start (EV_P_ ev_io *w)
1399	{	1584	{
1400	int fd = w->fd;	1585	int fd = w->fd;
1401		1586
1402	if (expect_false (ev_is_active (w)))	1587	if (expect_false (ev_is_active (w)))
1403	return;	1588	return;
…		…
1409	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1594	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1410		1595
1411	fd_change (EV_A_ fd);	1596	fd_change (EV_A_ fd);
1412	}	1597	}
1413		1598
1414	void	1599	void noinline
1415	ev_io_stop (EV_P_ struct ev_io *w)	1600	ev_io_stop (EV_P_ ev_io *w)
1416	{	1601	{
1417	ev_clear_pending (EV_A_ (W)w);	1602	clear_pending (EV_A_ (W)w);
1418	if (expect_false (!ev_is_active (w)))	1603	if (expect_false (!ev_is_active (w)))
1419	return;	1604	return;
1420		1605
1421	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1606	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1422		1607
…		…
1424	ev_stop (EV_A_ (W)w);	1609	ev_stop (EV_A_ (W)w);
1425		1610
1426	fd_change (EV_A_ w->fd);	1611	fd_change (EV_A_ w->fd);
1427	}	1612	}
1428		1613
1429	void	1614	void noinline
1430	ev_timer_start (EV_P_ struct ev_timer *w)	1615	ev_timer_start (EV_P_ ev_timer *w)
1431	{	1616	{
1432	if (expect_false (ev_is_active (w)))	1617	if (expect_false (ev_is_active (w)))
1433	return;	1618	return;
1434		1619
1435	((WT)w)->at += mn_now;	1620	((WT)w)->at += mn_now;
1436		1621
1437	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1622	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1438		1623
1439	ev_start (EV_A_ (W)w, ++timercnt);	1624	ev_start (EV_A_ (W)w, ++timercnt);
1440	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);	1625	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
1441	timers [timercnt - 1] = w;	1626	timers [timercnt - 1] = w;
1442	upheap ((WT *)timers, timercnt - 1);	1627	upheap ((WT *)timers, timercnt - 1);
1443		1628
		1629	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1630	}
		1631
		1632	void noinline
		1633	ev_timer_stop (EV_P_ ev_timer *w)
		1634	{
		1635	clear_pending (EV_A_ (W)w);
		1636	if (expect_false (!ev_is_active (w)))
		1637	return;
		1638
1444	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1639	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1445	}
1446		1640
1447	void	1641	{
1448	ev_timer_stop (EV_P_ struct ev_timer *w)	1642	int active = ((W)w)->active;
1449	{
1450	ev_clear_pending (EV_A_ (W)w);
1451	if (expect_false (!ev_is_active (w)))
1452	return;
1453		1643
1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1455
1456	if (expect_true (((W)w)->active < timercnt--))	1644	if (expect_true (--active < --timercnt))
1457	{	1645	{
1458	timers [((W)w)->active - 1] = timers [timercnt];	1646	timers [active] = timers [timercnt];
1459	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1647	adjustheap ((WT *)timers, timercnt, active);
1460	}	1648	}
		1649	}
1461		1650
1462	((WT)w)->at -= mn_now;	1651	((WT)w)->at -= mn_now;
1463		1652
1464	ev_stop (EV_A_ (W)w);	1653	ev_stop (EV_A_ (W)w);
1465	}	1654	}
1466		1655
1467	void	1656	void noinline
1468	ev_timer_again (EV_P_ struct ev_timer *w)	1657	ev_timer_again (EV_P_ ev_timer *w)
1469	{	1658	{
1470	if (ev_is_active (w))	1659	if (ev_is_active (w))
1471	{	1660	{
1472	if (w->repeat)	1661	if (w->repeat)
1473	{	1662	{
…		…
1482	w->at = w->repeat;	1671	w->at = w->repeat;
1483	ev_timer_start (EV_A_ w);	1672	ev_timer_start (EV_A_ w);
1484	}	1673	}
1485	}	1674	}
1486		1675
1487	#if EV_PERIODICS	1676	#if EV_PERIODIC_ENABLE
1488	void	1677	void noinline
1489	ev_periodic_start (EV_P_ struct ev_periodic *w)	1678	ev_periodic_start (EV_P_ ev_periodic *w)
1490	{	1679	{
1491	if (expect_false (ev_is_active (w)))	1680	if (expect_false (ev_is_active (w)))
1492	return;	1681	return;
1493		1682
1494	if (w->reschedule_cb)	1683	if (w->reschedule_cb)
1495	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1684	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1496	else if (w->interval)	1685	else if (w->interval)
1497	{	1686	{
1498	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1687	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1499	/* this formula differs from the one in periodic_reify because we do not always round up */	1688	/* this formula differs from the one in periodic_reify because we do not always round up */
1500	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1689	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1501	}	1690	}
		1691	else
		1692	((WT)w)->at = w->offset;
1502		1693
1503	ev_start (EV_A_ (W)w, ++periodiccnt);	1694	ev_start (EV_A_ (W)w, ++periodiccnt);
1504	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1695	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1505	periodics [periodiccnt - 1] = w;	1696	periodics [periodiccnt - 1] = w;
1506	upheap ((WT *)periodics, periodiccnt - 1);	1697	upheap ((WT *)periodics, periodiccnt - 1);
1507		1698
		1699	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1700	}
		1701
		1702	void noinline
		1703	ev_periodic_stop (EV_P_ ev_periodic *w)
		1704	{
		1705	clear_pending (EV_A_ (W)w);
		1706	if (expect_false (!ev_is_active (w)))
		1707	return;
		1708
1508	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1709	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1509	}
1510		1710
1511	void	1711	{
1512	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1712	int active = ((W)w)->active;
1513	{
1514	ev_clear_pending (EV_A_ (W)w);
1515	if (expect_false (!ev_is_active (w)))
1516	return;
1517		1713
1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1519
1520	if (expect_true (((W)w)->active < periodiccnt--))	1714	if (expect_true (--active < --periodiccnt))
1521	{	1715	{
1522	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1716	periodics [active] = periodics [periodiccnt];
1523	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1717	adjustheap ((WT *)periodics, periodiccnt, active);
1524	}	1718	}
		1719	}
1525		1720
1526	ev_stop (EV_A_ (W)w);	1721	ev_stop (EV_A_ (W)w);
1527	}	1722	}
1528		1723
1529	void	1724	void noinline
1530	ev_periodic_again (EV_P_ struct ev_periodic *w)	1725	ev_periodic_again (EV_P_ ev_periodic *w)
1531	{	1726	{
1532	/* TODO: use adjustheap and recalculation */	1727	/* TODO: use adjustheap and recalculation */
1533	ev_periodic_stop (EV_A_ w);	1728	ev_periodic_stop (EV_A_ w);
1534	ev_periodic_start (EV_A_ w);	1729	ev_periodic_start (EV_A_ w);
1535	}	1730	}
1536	#endif	1731	#endif
1537		1732
1538	void
1539	ev_idle_start (EV_P_ struct ev_idle *w)
1540	{
1541	if (expect_false (ev_is_active (w)))
1542	return;
1543
1544	ev_start (EV_A_ (W)w, ++idlecnt);
1545	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1546	idles [idlecnt - 1] = w;
1547	}
1548
1549	void
1550	ev_idle_stop (EV_P_ struct ev_idle *w)
1551	{
1552	ev_clear_pending (EV_A_ (W)w);
1553	if (expect_false (!ev_is_active (w)))
1554	return;
1555
1556	idles [((W)w)->active - 1] = idles [--idlecnt];
1557	ev_stop (EV_A_ (W)w);
1558	}
1559
1560	void
1561	ev_prepare_start (EV_P_ struct ev_prepare *w)
1562	{
1563	if (expect_false (ev_is_active (w)))
1564	return;
1565
1566	ev_start (EV_A_ (W)w, ++preparecnt);
1567	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1568	prepares [preparecnt - 1] = w;
1569	}
1570
1571	void
1572	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1573	{
1574	ev_clear_pending (EV_A_ (W)w);
1575	if (expect_false (!ev_is_active (w)))
1576	return;
1577
1578	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1579	ev_stop (EV_A_ (W)w);
1580	}
1581
1582	void
1583	ev_check_start (EV_P_ struct ev_check *w)
1584	{
1585	if (expect_false (ev_is_active (w)))
1586	return;
1587
1588	ev_start (EV_A_ (W)w, ++checkcnt);
1589	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1590	checks [checkcnt - 1] = w;
1591	}
1592
1593	void
1594	ev_check_stop (EV_P_ struct ev_check *w)
1595	{
1596	ev_clear_pending (EV_A_ (W)w);
1597	if (expect_false (!ev_is_active (w)))
1598	return;
1599
1600	checks [((W)w)->active - 1] = checks [--checkcnt];
1601	ev_stop (EV_A_ (W)w);
1602	}
1603
1604	#ifndef SA_RESTART	1733	#ifndef SA_RESTART
1605	# define SA_RESTART 0	1734	# define SA_RESTART 0
1606	#endif	1735	#endif
1607		1736
1608	void	1737	void noinline
1609	ev_signal_start (EV_P_ struct ev_signal *w)	1738	ev_signal_start (EV_P_ ev_signal *w)
1610	{	1739	{
1611	#if EV_MULTIPLICITY	1740	#if EV_MULTIPLICITY
1612	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1741	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1613	#endif	1742	#endif
1614	if (expect_false (ev_is_active (w)))	1743	if (expect_false (ev_is_active (w)))
…		…
1632	sigaction (w->signum, &sa, 0);	1761	sigaction (w->signum, &sa, 0);
1633	#endif	1762	#endif
1634	}	1763	}
1635	}	1764	}
1636		1765
1637	void	1766	void noinline
1638	ev_signal_stop (EV_P_ struct ev_signal *w)	1767	ev_signal_stop (EV_P_ ev_signal *w)
1639	{	1768	{
1640	ev_clear_pending (EV_A_ (W)w);	1769	clear_pending (EV_A_ (W)w);
1641	if (expect_false (!ev_is_active (w)))	1770	if (expect_false (!ev_is_active (w)))
1642	return;	1771	return;
1643		1772
1644	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1773	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1645	ev_stop (EV_A_ (W)w);	1774	ev_stop (EV_A_ (W)w);
…		…
1647	if (!signals [w->signum - 1].head)	1776	if (!signals [w->signum - 1].head)
1648	signal (w->signum, SIG_DFL);	1777	signal (w->signum, SIG_DFL);
1649	}	1778	}
1650		1779
1651	void	1780	void
1652	ev_child_start (EV_P_ struct ev_child *w)	1781	ev_child_start (EV_P_ ev_child *w)
1653	{	1782	{
1654	#if EV_MULTIPLICITY	1783	#if EV_MULTIPLICITY
1655	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1784	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1656	#endif	1785	#endif
1657	if (expect_false (ev_is_active (w)))	1786	if (expect_false (ev_is_active (w)))
1658	return;	1787	return;
1659		1788
1660	ev_start (EV_A_ (W)w, 1);	1789	ev_start (EV_A_ (W)w, 1);
1661	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1790	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1662	}	1791	}
1663		1792
1664	void	1793	void
1665	ev_child_stop (EV_P_ struct ev_child *w)	1794	ev_child_stop (EV_P_ ev_child *w)
1666	{	1795	{
1667	ev_clear_pending (EV_A_ (W)w);	1796	clear_pending (EV_A_ (W)w);
1668	if (expect_false (!ev_is_active (w)))	1797	if (expect_false (!ev_is_active (w)))
1669	return;	1798	return;
1670		1799
1671	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1800	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1672	ev_stop (EV_A_ (W)w);	1801	ev_stop (EV_A_ (W)w);
1673	}	1802	}
1674		1803
1675	#if EV_MULTIPLICITY	1804	#if EV_STAT_ENABLE
		1805
		1806	# ifdef _WIN32
		1807	# undef lstat
		1808	# define lstat(a,b) _stati64 (a,b)
		1809	# endif
		1810
		1811	#define DEF_STAT_INTERVAL 5.0074891
		1812	#define MIN_STAT_INTERVAL 0.1074891
		1813
		1814	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1815
		1816	#if EV_USE_INOTIFY
		1817	# define EV_INOTIFY_BUFSIZE 8192
		1818
		1819	static void noinline
		1820	infy_add (EV_P_ ev_stat *w)
		1821	{
		1822	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);
		1823
		1824	if (w->wd < 0)
		1825	{
		1826	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1827
		1828	/* monitor some parent directory for speedup hints */
		1829	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1830	{
		1831	char path [4096];
		1832	strcpy (path, w->path);
		1833
		1834	do
		1835	{
		1836	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1837	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1838
		1839	char *pend = strrchr (path, '/');
		1840
		1841	if (!pend)
		1842	break; /* whoops, no '/', complain to your admin */
		1843
		1844	*pend = 0;
		1845	w->wd = inotify_add_watch (fs_fd, path, mask);
		1846	}
		1847	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1848	}
		1849	}
		1850	else
		1851	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1852
		1853	if (w->wd >= 0)
		1854	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1855	}
		1856
		1857	static void noinline
		1858	infy_del (EV_P_ ev_stat *w)
		1859	{
		1860	int slot;
		1861	int wd = w->wd;
		1862
		1863	if (wd < 0)
		1864	return;
		1865
		1866	w->wd = -2;
		1867	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1868	wlist_del (&fs_hash [slot].head, (WL)w);
		1869
		1870	/* remove this watcher, if others are watching it, they will rearm */
		1871	inotify_rm_watch (fs_fd, wd);
		1872	}
		1873
		1874	static void noinline
		1875	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1876	{
		1877	if (slot < 0)
		1878	/* overflow, need to check for all hahs slots */
		1879	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1880	infy_wd (EV_A_ slot, wd, ev);
		1881	else
		1882	{
		1883	WL w_;
		1884
		1885	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1886	{
		1887	ev_stat *w = (ev_stat *)w_;
		1888	w_ = w_->next; /* lets us remove this watcher and all before it */
		1889
		1890	if (w->wd == wd || wd == -1)
		1891	{
		1892	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1893	{
		1894	w->wd = -1;
		1895	infy_add (EV_A_ w); /* re-add, no matter what */
		1896	}
		1897
		1898	stat_timer_cb (EV_A_ &w->timer, 0);
		1899	}
		1900	}
		1901	}
		1902	}
		1903
1676	static void	1904	static void
1677	embed_cb (EV_P_ struct ev_io *io, int revents)	1905	infy_cb (EV_P_ ev_io *w, int revents)
1678	{	1906	{
1679	struct ev_embed *w = (struct ev_embed *)(((char *)io) - offsetof (struct ev_embed, io));	1907	char buf [EV_INOTIFY_BUFSIZE];
		1908	struct inotify_event *ev = (struct inotify_event *)buf;
		1909	int ofs;
		1910	int len = read (fs_fd, buf, sizeof (buf));
1680		1911
		1912	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1913	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1914	}
		1915
		1916	void inline_size
		1917	infy_init (EV_P)
		1918	{
		1919	if (fs_fd != -2)
		1920	return;
		1921
		1922	fs_fd = inotify_init ();
		1923
		1924	if (fs_fd >= 0)
		1925	{
		1926	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1927	ev_set_priority (&fs_w, EV_MAXPRI);
		1928	ev_io_start (EV_A_ &fs_w);
		1929	}
		1930	}
		1931
		1932	void inline_size
		1933	infy_fork (EV_P)
		1934	{
		1935	int slot;
		1936
		1937	if (fs_fd < 0)
		1938	return;
		1939
		1940	close (fs_fd);
		1941	fs_fd = inotify_init ();
		1942
		1943	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1944	{
		1945	WL w_ = fs_hash [slot].head;
		1946	fs_hash [slot].head = 0;
		1947
		1948	while (w_)
		1949	{
		1950	ev_stat *w = (ev_stat *)w_;
		1951	w_ = w_->next; /* lets us add this watcher */
		1952
		1953	w->wd = -1;
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w); /* re-add, no matter what */
		1957	else
		1958	ev_timer_start (EV_A_ &w->timer);
		1959	}
		1960
		1961	}
		1962	}
		1963
		1964	#endif
		1965
		1966	void
		1967	ev_stat_stat (EV_P_ ev_stat *w)
		1968	{
		1969	if (lstat (w->path, &w->attr) < 0)
		1970	w->attr.st_nlink = 0;
		1971	else if (!w->attr.st_nlink)
		1972	w->attr.st_nlink = 1;
		1973	}
		1974
		1975	static void noinline
		1976	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1977	{
		1978	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1979
		1980	/* we copy this here each the time so that */
		1981	/* prev has the old value when the callback gets invoked */
		1982	w->prev = w->attr;
		1983	ev_stat_stat (EV_A_ w);
		1984
		1985	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1986	if (
		1987	w->prev.st_dev != w->attr.st_dev
		1988	|| w->prev.st_ino != w->attr.st_ino
		1989	|| w->prev.st_mode != w->attr.st_mode
		1990	|| w->prev.st_nlink != w->attr.st_nlink
		1991	|| w->prev.st_uid != w->attr.st_uid
		1992	|| w->prev.st_gid != w->attr.st_gid
		1993	|| w->prev.st_rdev != w->attr.st_rdev
		1994	|| w->prev.st_size != w->attr.st_size
		1995	|| w->prev.st_atime != w->attr.st_atime
		1996	|| w->prev.st_mtime != w->attr.st_mtime
		1997	|| w->prev.st_ctime != w->attr.st_ctime
		1998	) {
		1999	#if EV_USE_INOTIFY
		2000	infy_del (EV_A_ w);
		2001	infy_add (EV_A_ w);
		2002	ev_stat_stat (EV_A_ w); /* avoid race... */
		2003	#endif
		2004
1681	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2005	ev_feed_event (EV_A_ w, EV_STAT);
		2006	}
		2007	}
		2008
		2009	void
		2010	ev_stat_start (EV_P_ ev_stat *w)
		2011	{
		2012	if (expect_false (ev_is_active (w)))
		2013	return;
		2014
		2015	/* since we use memcmp, we need to clear any padding data etc. */
		2016	memset (&w->prev, 0, sizeof (ev_statdata));
		2017	memset (&w->attr, 0, sizeof (ev_statdata));
		2018
		2019	ev_stat_stat (EV_A_ w);
		2020
		2021	if (w->interval < MIN_STAT_INTERVAL)
		2022	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2023
		2024	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2025	ev_set_priority (&w->timer, ev_priority (w));
		2026
		2027	#if EV_USE_INOTIFY
		2028	infy_init (EV_A);
		2029
		2030	if (fs_fd >= 0)
		2031	infy_add (EV_A_ w);
		2032	else
		2033	#endif
		2034	ev_timer_start (EV_A_ &w->timer);
		2035
		2036	ev_start (EV_A_ (W)w, 1);
		2037	}
		2038
		2039	void
		2040	ev_stat_stop (EV_P_ ev_stat *w)
		2041	{
		2042	clear_pending (EV_A_ (W)w);
		2043	if (expect_false (!ev_is_active (w)))
		2044	return;
		2045
		2046	#if EV_USE_INOTIFY
		2047	infy_del (EV_A_ w);
		2048	#endif
		2049	ev_timer_stop (EV_A_ &w->timer);
		2050
		2051	ev_stop (EV_A_ (W)w);
		2052	}
		2053	#endif
		2054
		2055	#if EV_IDLE_ENABLE
		2056	void
		2057	ev_idle_start (EV_P_ ev_idle *w)
		2058	{
		2059	if (expect_false (ev_is_active (w)))
		2060	return;
		2061
		2062	pri_adjust (EV_A_ (W)w);
		2063
		2064	{
		2065	int active = ++idlecnt [ABSPRI (w)];
		2066
		2067	++idleall;
		2068	ev_start (EV_A_ (W)w, active);
		2069
		2070	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2071	idles [ABSPRI (w)][active - 1] = w;
		2072	}
		2073	}
		2074
		2075	void
		2076	ev_idle_stop (EV_P_ ev_idle *w)
		2077	{
		2078	clear_pending (EV_A_ (W)w);
		2079	if (expect_false (!ev_is_active (w)))
		2080	return;
		2081
		2082	{
		2083	int active = ((W)w)->active;
		2084
		2085	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2086	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2087
		2088	ev_stop (EV_A_ (W)w);
		2089	--idleall;
		2090	}
		2091	}
		2092	#endif
		2093
		2094	void
		2095	ev_prepare_start (EV_P_ ev_prepare *w)
		2096	{
		2097	if (expect_false (ev_is_active (w)))
		2098	return;
		2099
		2100	ev_start (EV_A_ (W)w, ++preparecnt);
		2101	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2102	prepares [preparecnt - 1] = w;
		2103	}
		2104
		2105	void
		2106	ev_prepare_stop (EV_P_ ev_prepare *w)
		2107	{
		2108	clear_pending (EV_A_ (W)w);
		2109	if (expect_false (!ev_is_active (w)))
		2110	return;
		2111
		2112	{
		2113	int active = ((W)w)->active;
		2114	prepares [active - 1] = prepares [--preparecnt];
		2115	((W)prepares [active - 1])->active = active;
		2116	}
		2117
		2118	ev_stop (EV_A_ (W)w);
		2119	}
		2120
		2121	void
		2122	ev_check_start (EV_P_ ev_check *w)
		2123	{
		2124	if (expect_false (ev_is_active (w)))
		2125	return;
		2126
		2127	ev_start (EV_A_ (W)w, ++checkcnt);
		2128	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2129	checks [checkcnt - 1] = w;
		2130	}
		2131
		2132	void
		2133	ev_check_stop (EV_P_ ev_check *w)
		2134	{
		2135	clear_pending (EV_A_ (W)w);
		2136	if (expect_false (!ev_is_active (w)))
		2137	return;
		2138
		2139	{
		2140	int active = ((W)w)->active;
		2141	checks [active - 1] = checks [--checkcnt];
		2142	((W)checks [active - 1])->active = active;
		2143	}
		2144
		2145	ev_stop (EV_A_ (W)w);
		2146	}
		2147
		2148	#if EV_EMBED_ENABLE
		2149	void noinline
		2150	ev_embed_sweep (EV_P_ ev_embed *w)
		2151	{
1682	ev_loop (w->loop, EVLOOP_NONBLOCK);	2152	ev_loop (w->loop, EVLOOP_NONBLOCK);
1683	}	2153	}
1684		2154
		2155	static void
		2156	embed_cb (EV_P_ ev_io *io, int revents)
		2157	{
		2158	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2159
		2160	if (ev_cb (w))
		2161	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2162	else
		2163	ev_embed_sweep (loop, w);
		2164	}
		2165
1685	void	2166	void
1686	ev_embed_start (EV_P_ struct ev_embed *w)	2167	ev_embed_start (EV_P_ ev_embed *w)
1687	{	2168	{
1688	if (expect_false (ev_is_active (w)))	2169	if (expect_false (ev_is_active (w)))
1689	return;	2170	return;
1690		2171
1691	{	2172	{
1692	struct ev_loop *loop = w->loop;	2173	struct ev_loop *loop = w->loop;
1693	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2174	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1694	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2175	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1695	}	2176	}
1696		2177
		2178	ev_set_priority (&w->io, ev_priority (w));
1697	ev_io_start (EV_A_ &w->io);	2179	ev_io_start (EV_A_ &w->io);
		2180
1698	ev_start (EV_A_ (W)w, 1);	2181	ev_start (EV_A_ (W)w, 1);
1699	}	2182	}
1700		2183
1701	void	2184	void
1702	ev_embed_stop (EV_P_ struct ev_embed *w)	2185	ev_embed_stop (EV_P_ ev_embed *w)
1703	{	2186	{
1704	ev_clear_pending (EV_A_ (W)w);	2187	clear_pending (EV_A_ (W)w);
1705	if (expect_false (!ev_is_active (w)))	2188	if (expect_false (!ev_is_active (w)))
1706	return;	2189	return;
1707		2190
1708	ev_io_stop (EV_A_ &w->io);	2191	ev_io_stop (EV_A_ &w->io);
		2192
1709	ev_stop (EV_A_ (W)w);	2193	ev_stop (EV_A_ (W)w);
1710	}	2194	}
1711	#endif	2195	#endif
1712		2196
		2197	#if EV_FORK_ENABLE
		2198	void
		2199	ev_fork_start (EV_P_ ev_fork *w)
		2200	{
		2201	if (expect_false (ev_is_active (w)))
		2202	return;
		2203
		2204	ev_start (EV_A_ (W)w, ++forkcnt);
		2205	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2206	forks [forkcnt - 1] = w;
		2207	}
		2208
		2209	void
		2210	ev_fork_stop (EV_P_ ev_fork *w)
		2211	{
		2212	clear_pending (EV_A_ (W)w);
		2213	if (expect_false (!ev_is_active (w)))
		2214	return;
		2215
		2216	{
		2217	int active = ((W)w)->active;
		2218	forks [active - 1] = forks [--forkcnt];
		2219	((W)forks [active - 1])->active = active;
		2220	}
		2221
		2222	ev_stop (EV_A_ (W)w);
		2223	}
		2224	#endif
		2225
1713	/*****************************************************************************/	2226	/*****************************************************************************/
1714		2227
1715	struct ev_once	2228	struct ev_once
1716	{	2229	{
1717	struct ev_io io;	2230	ev_io io;
1718	struct ev_timer to;	2231	ev_timer to;
1719	void (*cb)(int revents, void *arg);	2232	void (*cb)(int revents, void *arg);
1720	void *arg;	2233	void *arg;
1721	};	2234	};
1722		2235
1723	static void	2236	static void
…		…
1732		2245
1733	cb (revents, arg);	2246	cb (revents, arg);
1734	}	2247	}
1735		2248
1736	static void	2249	static void
1737	once_cb_io (EV_P_ struct ev_io *w, int revents)	2250	once_cb_io (EV_P_ ev_io *w, int revents)
1738	{	2251	{
1739	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2252	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1740	}	2253	}
1741		2254
1742	static void	2255	static void
1743	once_cb_to (EV_P_ struct ev_timer *w, int revents)	2256	once_cb_to (EV_P_ ev_timer *w, int revents)
1744	{	2257	{
1745	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2258	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1746	}	2259	}
1747		2260
1748	void	2261	void

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