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Comparing libev/ev.c (file contents):
Revision 1.145 by root, Tue Nov 27 08:54:38 2007 UTC vs.
Revision 1.197 by root, Sat Dec 22 15:20:13 2007 UTC

…		…
51	# ifndef EV_USE_MONOTONIC	51	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	52	# define EV_USE_MONOTONIC 0
53	# endif	53	# endif
54	# ifndef EV_USE_REALTIME	54	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_NANOSLEEP
		60	# if HAVE_NANOSLEEP
		61	# define EV_USE_NANOSLEEP 1
		62	# else
		63	# define EV_USE_NANOSLEEP 0
56	# endif	64	# endif
57	# endif	65	# endif
58		66
59	# ifndef EV_USE_SELECT	67	# ifndef EV_USE_SELECT
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	68	# if HAVE_SELECT && HAVE_SYS_SELECT_H
…		…
94	# else	102	# else
95	# define EV_USE_PORT 0	103	# define EV_USE_PORT 0
96	# endif	104	# endif
97	# endif	105	# endif
98		106
		107	# ifndef EV_USE_INOTIFY
		108	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		109	# define EV_USE_INOTIFY 1
		110	# else
		111	# define EV_USE_INOTIFY 0
		112	# endif
		113	# endif
		114
99	#endif	115	#endif
100		116
101	#include <math.h>	117	#include <math.h>
102	#include <stdlib.h>	118	#include <stdlib.h>
103	#include <fcntl.h>	119	#include <fcntl.h>
…		…
109	#include <errno.h>	125	#include <errno.h>
110	#include <sys/types.h>	126	#include <sys/types.h>
111	#include <time.h>	127	#include <time.h>
112		128
113	#include <signal.h>	129	#include <signal.h>
		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
		134	# include "ev.h"
		135	#endif
114		136
115	#ifndef _WIN32	137	#ifndef _WIN32
116	# include <sys/time.h>	138	# include <sys/time.h>
117	# include <sys/wait.h>	139	# include <sys/wait.h>
118	# include <unistd.h>	140	# include <unistd.h>
…		…
132		154
133	#ifndef EV_USE_REALTIME	155	#ifndef EV_USE_REALTIME
134	# define EV_USE_REALTIME 0	156	# define EV_USE_REALTIME 0
135	#endif	157	#endif
136		158
		159	#ifndef EV_USE_NANOSLEEP
		160	# define EV_USE_NANOSLEEP 0
		161	#endif
		162
137	#ifndef EV_USE_SELECT	163	#ifndef EV_USE_SELECT
138	# define EV_USE_SELECT 1	164	# define EV_USE_SELECT 1
139	#endif	165	#endif
140		166
141	#ifndef EV_USE_POLL	167	#ifndef EV_USE_POLL
…		…
156		182
157	#ifndef EV_USE_PORT	183	#ifndef EV_USE_PORT
158	# define EV_USE_PORT 0	184	# define EV_USE_PORT 0
159	#endif	185	#endif
160		186
		187	#ifndef EV_USE_INOTIFY
		188	# define EV_USE_INOTIFY 0
		189	#endif
		190
		191	#ifndef EV_PID_HASHSIZE
		192	# if EV_MINIMAL
		193	# define EV_PID_HASHSIZE 1
		194	# else
		195	# define EV_PID_HASHSIZE 16
		196	# endif
		197	#endif
		198
		199	#ifndef EV_INOTIFY_HASHSIZE
		200	# if EV_MINIMAL
		201	# define EV_INOTIFY_HASHSIZE 1
		202	# else
		203	# define EV_INOTIFY_HASHSIZE 16
		204	# endif
		205	#endif
		206
161	/**/	207	/**/
162		208
163	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
164	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
165	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
…		…
168	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
169	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
170	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
171	#endif	217	#endif
172		218
		219	#if !EV_STAT_ENABLE
		220	# undef EV_USE_INOTIFY
		221	# define EV_USE_INOTIFY 0
		222	#endif
		223
		224	#if !EV_USE_NANOSLEEP
		225	# ifndef _WIN32
		226	# include <sys/select.h>
		227	# endif
		228	#endif
		229
		230	#if EV_USE_INOTIFY
		231	# include <sys/inotify.h>
		232	#endif
		233
173	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
174	# include <winsock.h>	235	# include <winsock.h>
175	#endif	236	#endif
176		237
177	/**/	238	/**/
178		239
		240	/*
		241	* This is used to avoid floating point rounding problems.
		242	* It is added to ev_rt_now when scheduling periodics
		243	* to ensure progress, time-wise, even when rounding
		244	* errors are against us.
		245	* This value is good at least till the year 4000.
		246	* Better solutions welcome.
		247	*/
		248	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		249
179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	250	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	251	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
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 */	252	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
183		253
184	#ifdef EV_H
185	# include EV_H
186	#else
187	# include "ev.h"
188	#endif
189
190	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
191	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# 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))	256	# 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	257	#else
201	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
202	# define inline_speed static
203	# define inline_size static
204	# define noinline	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
205	#endif	263	#endif
206		264
207	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
208	#define expect_true(expr) expect ((expr) != 0, 1)	266	#define expect_true(expr) expect ((expr) != 0, 1)
		267	#define inline_size static inline
		268
		269	#if EV_MINIMAL
		270	# define inline_speed static noinline
		271	#else
		272	# define inline_speed static inline
		273	#endif
209		274
210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
212		277
213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
214	#define EMPTY2(a,b) /* used to suppress some warnings */	279	#define EMPTY2(a,b) /* used to suppress some warnings */
215		280
216	typedef ev_watcher *W;	281	typedef ev_watcher *W;
217	typedef ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
218	typedef ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
219		284
		285	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		286	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
221		288
222	#ifdef _WIN32	289	#ifdef _WIN32
223	# include "ev_win32.c"	290	# include "ev_win32.c"
224	#endif	291	#endif
225		292
…		…
254	ev_set_allocator (void *(*cb)(void *ptr, long size))	321	ev_set_allocator (void *(*cb)(void *ptr, long size))
255	{	322	{
256	alloc = cb;	323	alloc = cb;
257	}	324	}
258		325
259	static void *	326	inline_speed void *
260	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
261	{	328	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263		330
264	if (!ptr && size)	331	if (!ptr && size)
…		…
288	typedef struct	355	typedef struct
289	{	356	{
290	W w;	357	W w;
291	int events;	358	int events;
292	} ANPENDING;	359	} ANPENDING;
		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
293		367
294	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
295		369
296	struct ev_loop	370	struct ev_loop
297	{	371	{
…		…
354	{	428	{
355	return ev_rt_now;	429	return ev_rt_now;
356	}	430	}
357	#endif	431	#endif
358		432
359	#define array_roundsize(type,n) (((n) | 4) & ~3)	433	void
		434	ev_sleep (ev_tstamp delay)
		435	{
		436	if (delay > 0.)
		437	{
		438	#if EV_USE_NANOSLEEP
		439	struct timespec ts;
		440
		441	ts.tv_sec = (time_t)delay;
		442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		443
		444	nanosleep (&ts, 0);
		445	#elif defined(_WIN32)
		446	Sleep (delay * 1e3);
		447	#else
		448	struct timeval tv;
		449
		450	tv.tv_sec = (time_t)delay;
		451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		452
		453	select (0, 0, 0, 0, &tv);
		454	#endif
		455	}
		456	}
		457
		458	/*****************************************************************************/
		459
		460	int inline_size
		461	array_nextsize (int elem, int cur, int cnt)
		462	{
		463	int ncur = cur + 1;
		464
		465	do
		466	ncur <<= 1;
		467	while (cnt > ncur);
		468
		469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		470	if (elem * ncur > 4096)
		471	{
		472	ncur *= elem;
		473	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		474	ncur = ncur - sizeof (void *) * 4;
		475	ncur /= elem;
		476	}
		477
		478	return ncur;
		479	}
		480
		481	static noinline void *
		482	array_realloc (int elem, void *base, int *cur, int cnt)
		483	{
		484	*cur = array_nextsize (elem, *cur, cnt);
		485	return ev_realloc (base, elem * *cur);
		486	}
360		487
361	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
363	{ \	490	{ \
364	int newcnt = cur; \	491	int ocur_ = (cur); \
365	do \	492	(base) = (type *)array_realloc \
366	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	494	init ((base) + (ocur_), (cur) - ocur_); \
368	} \
369	while ((cnt) > newcnt); \
370	\
371	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
372	init (base + cur, newcnt - cur); \
373	cur = newcnt; \
374	}	495	}
375		496
		497	#if 0
376	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	500	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	502	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382	}	504	}
		505	#endif
383		506
384	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386		509
387	/*****************************************************************************/	510	/*****************************************************************************/
388		511
389	void noinline	512	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	513	ev_feed_event (EV_P_ void *w, int revents)
391	{	514	{
392	W w_ = (W)w;	515	W w_ = (W)w;
		516	int pri = ABSPRI (w_);
393		517
394	if (expect_false (w_->pending))	518	if (expect_false (w_->pending))
		519	pendings [pri][w_->pending - 1].events |= revents;
		520	else
395	{	521	{
		522	w_->pending = ++pendingcnt [pri];
		523	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		524	pendings [pri][w_->pending - 1].w = w_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	525	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	526	}
399
400	w_->pending = ++pendingcnt [ABSPRI (w_)];
401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
404	}	527	}
405		528
406	void inline_size	529	void inline_speed
407	queue_events (EV_P_ W *events, int eventcnt, int type)	530	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	531	{
409	int i;	532	int i;
410		533
411	for (i = 0; i < eventcnt; ++i)	534	for (i = 0; i < eventcnt; ++i)
…		…
443	}	566	}
444		567
445	void	568	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
449	}	573	}
450		574
451	void inline_size	575	void inline_size
452	fd_reify (EV_P)	576	fd_reify (EV_P)
453	{	577	{
…		…
457	{	581	{
458	int fd = fdchanges [i];	582	int fd = fdchanges [i];
459	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
460	ev_io *w;	584	ev_io *w;
461		585
462	int events = 0;	586	unsigned char events = 0;
463		587
464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	588	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465	events |= w->events;	589	events |= (unsigned char)w->events;
466		590
467	#if EV_SELECT_IS_WINSOCKET	591	#if EV_SELECT_IS_WINSOCKET
468	if (events)	592	if (events)
469	{	593	{
470	unsigned long argp;	594	unsigned long argp;
471	anfd->handle = _get_osfhandle (fd);	595	anfd->handle = _get_osfhandle (fd);
472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
473	}	597	}
474	#endif	598	#endif
475		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
476	anfd->reify = 0;	604	anfd->reify = 0;
477
478	backend_modify (EV_A_ fd, anfd->events, events);
479	anfd->events = events;	605	anfd->events = events;
		606
		607	if (o_events != events || o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
480	}	610	}
481		611
482	fdchangecnt = 0;	612	fdchangecnt = 0;
483	}	613	}
484		614
485	void inline_size	615	void inline_size
486	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
487	{	617	{
488	if (expect_false (anfds [fd].reify))	618	unsigned char reify = anfds [fd].reify;
489	return;
490
491	anfds [fd].reify = 1;	619	anfds [fd].reify |= flags;
492		620
		621	if (expect_true (!reify))
		622	{
493	++fdchangecnt;	623	++fdchangecnt;
494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
496	}	627	}
497		628
498	void inline_speed	629	void inline_speed
499	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
500	{	631	{
…		…
547	static void noinline	678	static void noinline
548	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
549	{	680	{
550	int fd;	681	int fd;
551		682
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	684	if (anfds [fd].events)
555	{	685	{
556	anfds [fd].events = 0;	686	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET | 1);
558	}	688	}
559	}	689	}
560		690
561	/*****************************************************************************/	691	/*****************************************************************************/
562		692
563	void inline_speed	693	void inline_speed
564	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
565	{	695	{
566	WT w = heap [k];	696	WT w = heap [k];
567		697
568	while (k && heap [k >> 1]->at > w->at)	698	while (k)
569	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
570	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
571	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
572	k >>= 1;	707	k = p;
573	}	708	}
574		709
575	heap [k] = w;	710	heap [k] = w;
576	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
577
578	}	712	}
579		713
580	void inline_speed	714	void inline_speed
581	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
582	{	716	{
583	WT w = heap [k];	717	WT w = heap [k];
584		718
585	while (k < (N >> 1))	719	for (;;)
586	{	720	{
587	int j = k << 1;	721	int c = (k << 1) + 1;
588		722
589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
590	++j;
591
592	if (w->at <= heap [j]->at)
593	break;	724	break;
594		725
		726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		727	? 1 : 0;
		728
		729	if (w->at <= heap [c]->at)
		730	break;
		731
595	heap [k] = heap [j];	732	heap [k] = heap [c];
596	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
597	k = j;	735	k = c;
598	}	736	}
599		737
600	heap [k] = w;	738	heap [k] = w;
601	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
602	}	740	}
…		…
684	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
685	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
686	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
687	}	825	}
688		826
689	void inline_size	827	void inline_speed
690	fd_intern (int fd)	828	fd_intern (int fd)
691	{	829	{
692	#ifdef _WIN32	830	#ifdef _WIN32
693	int arg = 1;	831	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
709	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
710	}	848	}
711		849
712	/*****************************************************************************/	850	/*****************************************************************************/
713		851
714	static ev_child *childs [PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
715		853
716	#ifndef _WIN32	854	#ifndef _WIN32
717		855
718	static ev_signal childev;	856	static ev_signal childev;
719		857
720	void inline_speed	858	void inline_speed
721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	859	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
722	{	860	{
723	ev_child *w;	861	ev_child *w;
724		862
725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	863	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
726	if (w->pid == pid || !w->pid)	864	if (w->pid == pid || !w->pid)
727	{	865	{
728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	866	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
729	w->rpid = pid;	867	w->rpid = pid;
730	w->rstatus = status;	868	w->rstatus = status;
731	ev_feed_event (EV_A_ (W)w, EV_CHILD);	869	ev_feed_event (EV_A_ (W)w, EV_CHILD);
732	}	870	}
733	}	871	}
734		872
735	#ifndef WCONTINUED	873	#ifndef WCONTINUED
…		…
751	/* make sure we are called again until all childs have been reaped */	889	/* make sure we are called again until all childs have been reaped */
752	/* we need to do it this way so that the callback gets called before we continue */	890	/* we need to do it this way so that the callback gets called before we continue */
753	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	891	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754		892
755	child_reap (EV_A_ sw, pid, pid, status);	893	child_reap (EV_A_ sw, pid, pid, status);
		894	if (EV_PID_HASHSIZE > 1)
756	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	895	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757	}	896	}
758		897
759	#endif	898	#endif
760		899
761	/*****************************************************************************/	900	/*****************************************************************************/
…		…
833	}	972	}
834		973
835	unsigned int	974	unsigned int
836	ev_embeddable_backends (void)	975	ev_embeddable_backends (void)
837	{	976	{
838	return EVBACKEND_EPOLL	977	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
839	| EVBACKEND_KQUEUE	978
840	| EVBACKEND_PORT;	979	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		980	/* please fix it and tell me how to detect the fix */
		981	flags &= ~EVBACKEND_EPOLL;
		982
		983	return flags;
841	}	984	}
842		985
843	unsigned int	986	unsigned int
844	ev_backend (EV_P)	987	ev_backend (EV_P)
845	{	988	{
846	return backend;	989	return backend;
847	}	990	}
848		991
849	static void	992	unsigned int
		993	ev_loop_count (EV_P)
		994	{
		995	return loop_count;
		996	}
		997
		998	void
		999	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1000	{
		1001	io_blocktime = interval;
		1002	}
		1003
		1004	void
		1005	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1006	{
		1007	timeout_blocktime = interval;
		1008	}
		1009
		1010	static void noinline
850	loop_init (EV_P_ unsigned int flags)	1011	loop_init (EV_P_ unsigned int flags)
851	{	1012	{
852	if (!backend)	1013	if (!backend)
853	{	1014	{
854	#if EV_USE_MONOTONIC	1015	#if EV_USE_MONOTONIC
…		…
862	ev_rt_now = ev_time ();	1023	ev_rt_now = ev_time ();
863	mn_now = get_clock ();	1024	mn_now = get_clock ();
864	now_floor = mn_now;	1025	now_floor = mn_now;
865	rtmn_diff = ev_rt_now - mn_now;	1026	rtmn_diff = ev_rt_now - mn_now;
866		1027
		1028	io_blocktime = 0.;
		1029	timeout_blocktime = 0.;
		1030
		1031	/* pid check not overridable via env */
		1032	#ifndef _WIN32
		1033	if (flags & EVFLAG_FORKCHECK)
		1034	curpid = getpid ();
		1035	#endif
		1036
867	if (!(flags & EVFLAG_NOENV)	1037	if (!(flags & EVFLAG_NOENV)
868	&& !enable_secure ()	1038	&& !enable_secure ()
869	&& getenv ("LIBEV_FLAGS"))	1039	&& getenv ("LIBEV_FLAGS"))
870	flags = atoi (getenv ("LIBEV_FLAGS"));	1040	flags = atoi (getenv ("LIBEV_FLAGS"));
871		1041
872	if (!(flags & 0x0000ffffUL))	1042	if (!(flags & 0x0000ffffUL))
873	flags |= ev_recommended_backends ();	1043	flags |= ev_recommended_backends ();
874		1044
875	backend = 0;	1045	backend = 0;
		1046	backend_fd = -1;
		1047	#if EV_USE_INOTIFY
		1048	fs_fd = -2;
		1049	#endif
		1050
876	#if EV_USE_PORT	1051	#if EV_USE_PORT
877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1052	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878	#endif	1053	#endif
879	#if EV_USE_KQUEUE	1054	#if EV_USE_KQUEUE
880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1055	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
892	ev_init (&sigev, sigcb);	1067	ev_init (&sigev, sigcb);
893	ev_set_priority (&sigev, EV_MAXPRI);	1068	ev_set_priority (&sigev, EV_MAXPRI);
894	}	1069	}
895	}	1070	}
896		1071
897	static void	1072	static void noinline
898	loop_destroy (EV_P)	1073	loop_destroy (EV_P)
899	{	1074	{
900	int i;	1075	int i;
		1076
		1077	#if EV_USE_INOTIFY
		1078	if (fs_fd >= 0)
		1079	close (fs_fd);
		1080	#endif
		1081
		1082	if (backend_fd >= 0)
		1083	close (backend_fd);
901		1084
902	#if EV_USE_PORT	1085	#if EV_USE_PORT
903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1086	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904	#endif	1087	#endif
905	#if EV_USE_KQUEUE	1088	#if EV_USE_KQUEUE
…		…
914	#if EV_USE_SELECT	1097	#if EV_USE_SELECT
915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1098	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916	#endif	1099	#endif
917		1100
918	for (i = NUMPRI; i--; )	1101	for (i = NUMPRI; i--; )
		1102	{
919	array_free (pending, [i]);	1103	array_free (pending, [i]);
		1104	#if EV_IDLE_ENABLE
		1105	array_free (idle, [i]);
		1106	#endif
		1107	}
		1108
		1109	ev_free (anfds); anfdmax = 0;
920		1110
921	/* have to use the microsoft-never-gets-it-right macro */	1111	/* have to use the microsoft-never-gets-it-right macro */
922	array_free (fdchange, EMPTY0);	1112	array_free (fdchange, EMPTY);
923	array_free (timer, EMPTY0);	1113	array_free (timer, EMPTY);
924	#if EV_PERIODIC_ENABLE	1114	#if EV_PERIODIC_ENABLE
925	array_free (periodic, EMPTY0);	1115	array_free (periodic, EMPTY);
926	#endif	1116	#endif
		1117	#if EV_FORK_ENABLE
927	array_free (idle, EMPTY0);	1118	array_free (fork, EMPTY);
		1119	#endif
928	array_free (prepare, EMPTY0);	1120	array_free (prepare, EMPTY);
929	array_free (check, EMPTY0);	1121	array_free (check, EMPTY);
930		1122
931	backend = 0;	1123	backend = 0;
932	}	1124	}
933		1125
934	static void	1126	void inline_size infy_fork (EV_P);
		1127
		1128	void inline_size
935	loop_fork (EV_P)	1129	loop_fork (EV_P)
936	{	1130	{
937	#if EV_USE_PORT	1131	#if EV_USE_PORT
938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1132	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939	#endif	1133	#endif
940	#if EV_USE_KQUEUE	1134	#if EV_USE_KQUEUE
941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1135	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942	#endif	1136	#endif
943	#if EV_USE_EPOLL	1137	#if EV_USE_EPOLL
944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1138	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1139	#endif
		1140	#if EV_USE_INOTIFY
		1141	infy_fork (EV_A);
945	#endif	1142	#endif
946		1143
947	if (ev_is_active (&sigev))	1144	if (ev_is_active (&sigev))
948	{	1145	{
949	/* default loop */	1146	/* default loop */
…		…
1065	postfork = 1;	1262	postfork = 1;
1066	}	1263	}
1067		1264
1068	/*****************************************************************************/	1265	/*****************************************************************************/
1069		1266
1070	int inline_size	1267	void
1071	any_pending (EV_P)	1268	ev_invoke (EV_P_ void *w, int revents)
1072	{	1269	{
1073	int pri;	1270	EV_CB_INVOKE ((W)w, revents);
1074
1075	for (pri = NUMPRI; pri--; )
1076	if (pendingcnt [pri])
1077	return 1;
1078
1079	return 0;
1080	}	1271	}
1081		1272
1082	void inline_speed	1273	void inline_speed
1083	call_pending (EV_P)	1274	call_pending (EV_P)
1084	{	1275	{
…		…
1089	{	1280	{
1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1281	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091		1282
1092	if (expect_true (p->w))	1283	if (expect_true (p->w))
1093	{	1284	{
1094	assert (("non-pending watcher on pending list", p->w->pending));	1285	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1095		1286
1096	p->w->pending = 0;	1287	p->w->pending = 0;
1097	EV_CB_INVOKE (p->w, p->events);	1288	EV_CB_INVOKE (p->w, p->events);
1098	}	1289	}
1099	}	1290	}
…		…
1102	void inline_size	1293	void inline_size
1103	timers_reify (EV_P)	1294	timers_reify (EV_P)
1104	{	1295	{
1105	while (timercnt && ((WT)timers [0])->at <= mn_now)	1296	while (timercnt && ((WT)timers [0])->at <= mn_now)
1106	{	1297	{
1107	ev_timer *w = timers [0];	1298	ev_timer *w = (ev_timer *)timers [0];
1108		1299
1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1300	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1110		1301
1111	/* first reschedule or stop timer */	1302	/* first reschedule or stop timer */
1112	if (w->repeat)	1303	if (w->repeat)
1113	{	1304	{
1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1305	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115		1306
1116	((WT)w)->at += w->repeat;	1307	((WT)w)->at += w->repeat;
1117	if (((WT)w)->at < mn_now)	1308	if (((WT)w)->at < mn_now)
1118	((WT)w)->at = mn_now;	1309	((WT)w)->at = mn_now;
1119		1310
1120	downheap ((WT *)timers, timercnt, 0);	1311	downheap (timers, timercnt, 0);
1121	}	1312	}
1122	else	1313	else
1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1314	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1315
1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1316	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1130	void inline_size	1321	void inline_size
1131	periodics_reify (EV_P)	1322	periodics_reify (EV_P)
1132	{	1323	{
1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1324	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134	{	1325	{
1135	ev_periodic *w = periodics [0];	1326	ev_periodic *w = (ev_periodic *)periodics [0];
1136		1327
1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1328	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1138		1329
1139	/* first reschedule or stop timer */	1330	/* first reschedule or stop timer */
1140	if (w->reschedule_cb)	1331	if (w->reschedule_cb)
1141	{	1332	{
1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1333	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1143	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));	1334	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1335	downheap (periodics, periodiccnt, 0);
1145	}	1336	}
1146	else if (w->interval)	1337	else if (w->interval)
1147	{	1338	{
1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1339	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1340	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1149	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));	1341	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1150	downheap ((WT *)periodics, periodiccnt, 0);	1342	downheap (periodics, periodiccnt, 0);
1151	}	1343	}
1152	else	1344	else
1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1345	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154		1346
1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1347	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1162	int i;	1354	int i;
1163		1355
1164	/* adjust periodics after time jump */	1356	/* adjust periodics after time jump */
1165	for (i = 0; i < periodiccnt; ++i)	1357	for (i = 0; i < periodiccnt; ++i)
1166	{	1358	{
1167	ev_periodic *w = periodics [i];	1359	ev_periodic *w = (ev_periodic *)periodics [i];
1168		1360
1169	if (w->reschedule_cb)	1361	if (w->reschedule_cb)
1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1362	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171	else if (w->interval)	1363	else if (w->interval)
1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1364	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173	}	1365	}
1174		1366
1175	/* now rebuild the heap */	1367	/* now rebuild the heap */
1176	for (i = periodiccnt >> 1; i--; )	1368	for (i = periodiccnt >> 1; i--; )
1177	downheap ((WT *)periodics, periodiccnt, i);	1369	downheap (periodics, periodiccnt, i);
1178	}	1370	}
1179	#endif	1371	#endif
1180		1372
		1373	#if EV_IDLE_ENABLE
1181	int inline_size	1374	void inline_size
1182	time_update_monotonic (EV_P)	1375	idle_reify (EV_P)
1183	{	1376	{
		1377	if (expect_false (idleall))
		1378	{
		1379	int pri;
		1380
		1381	for (pri = NUMPRI; pri--; )
		1382	{
		1383	if (pendingcnt [pri])
		1384	break;
		1385
		1386	if (idlecnt [pri])
		1387	{
		1388	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1389	break;
		1390	}
		1391	}
		1392	}
		1393	}
		1394	#endif
		1395
		1396	void inline_speed
		1397	time_update (EV_P_ ev_tstamp max_block)
		1398	{
		1399	int i;
		1400
		1401	#if EV_USE_MONOTONIC
		1402	if (expect_true (have_monotonic))
		1403	{
		1404	ev_tstamp odiff = rtmn_diff;
		1405
1184	mn_now = get_clock ();	1406	mn_now = get_clock ();
1185		1407
		1408	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1409	/* interpolate in the meantime */
1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1410	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187	{	1411	{
1188	ev_rt_now = rtmn_diff + mn_now;	1412	ev_rt_now = rtmn_diff + mn_now;
1189	return 0;	1413	return;
1190	}	1414	}
1191	else	1415
1192	{
1193	now_floor = mn_now;	1416	now_floor = mn_now;
1194	ev_rt_now = ev_time ();	1417	ev_rt_now = ev_time ();
1195	return 1;
1196	}
1197	}
1198		1418
1199	void inline_size	1419	/* loop a few times, before making important decisions.
1200	time_update (EV_P)	1420	* on the choice of "4": one iteration isn't enough,
1201	{	1421	* in case we get preempted during the calls to
1202	int i;	1422	* ev_time and get_clock. a second call is almost guaranteed
1203		1423	* to succeed in that case, though. and looping a few more times
1204	#if EV_USE_MONOTONIC	1424	* doesn't hurt either as we only do this on time-jumps or
1205	if (expect_true (have_monotonic))	1425	* in the unlikely event of having been preempted here.
1206	{	1426	*/
1207	if (time_update_monotonic (EV_A))	1427	for (i = 4; --i; )
1208	{	1428	{
1209	ev_tstamp odiff = rtmn_diff;
1210
1211	/* loop a few times, before making important decisions.
1212	* on the choice of "4": one iteration isn't enough,
1213	* in case we get preempted during the calls to
1214	* ev_time and get_clock. a second call is almost guarenteed
1215	* to succeed in that case, though. and looping a few more times
1216	* doesn't hurt either as we only do this on time-jumps or
1217	* in the unlikely event of getting preempted here.
1218	*/
1219	for (i = 4; --i; )
1220	{
1221	rtmn_diff = ev_rt_now - mn_now;	1429	rtmn_diff = ev_rt_now - mn_now;
1222		1430
1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1431	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1224	return; /* all is well */	1432	return; /* all is well */
1225		1433
1226	ev_rt_now = ev_time ();	1434	ev_rt_now = ev_time ();
1227	mn_now = get_clock ();	1435	mn_now = get_clock ();
1228	now_floor = mn_now;	1436	now_floor = mn_now;
1229	}	1437	}
1230		1438
1231	# if EV_PERIODIC_ENABLE	1439	# if EV_PERIODIC_ENABLE
1232	periodics_reschedule (EV_A);	1440	periodics_reschedule (EV_A);
1233	# endif	1441	# endif
1234	/* no timer adjustment, as the monotonic clock doesn't jump */	1442	/* no timer adjustment, as the monotonic clock doesn't jump */
1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1443	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236	}
1237	}	1444	}
1238	else	1445	else
1239	#endif	1446	#endif
1240	{	1447	{
1241	ev_rt_now = ev_time ();	1448	ev_rt_now = ev_time ();
1242		1449
1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1450	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244	{	1451	{
1245	#if EV_PERIODIC_ENABLE	1452	#if EV_PERIODIC_ENABLE
1246	periodics_reschedule (EV_A);	1453	periodics_reschedule (EV_A);
1247	#endif	1454	#endif
1248
1249	/* adjust timers. this is easy, as the offset is the same for all */	1455	/* adjust timers. this is easy, as the offset is the same for all of them */
1250	for (i = 0; i < timercnt; ++i)	1456	for (i = 0; i < timercnt; ++i)
1251	((WT)timers [i])->at += ev_rt_now - mn_now;	1457	((WT)timers [i])->at += ev_rt_now - mn_now;
1252	}	1458	}
1253		1459
1254	mn_now = ev_rt_now;	1460	mn_now = ev_rt_now;
…		…
1274	{	1480	{
1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1481	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1276	? EVUNLOOP_ONE	1482	? EVUNLOOP_ONE
1277	: EVUNLOOP_CANCEL;	1483	: EVUNLOOP_CANCEL;
1278		1484
1279	while (activecnt)	1485	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1486
		1487	do
1280	{	1488	{
		1489	#ifndef _WIN32
		1490	if (expect_false (curpid)) /* penalise the forking check even more */
		1491	if (expect_false (getpid () != curpid))
		1492	{
		1493	curpid = getpid ();
		1494	postfork = 1;
		1495	}
		1496	#endif
		1497
		1498	#if EV_FORK_ENABLE
		1499	/* we might have forked, so queue fork handlers */
		1500	if (expect_false (postfork))
		1501	if (forkcnt)
		1502	{
		1503	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1504	call_pending (EV_A);
		1505	}
		1506	#endif
		1507
1281	/* queue check watchers (and execute them) */	1508	/* queue prepare watchers (and execute them) */
1282	if (expect_false (preparecnt))	1509	if (expect_false (preparecnt))
1283	{	1510	{
1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1511	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1285	call_pending (EV_A);	1512	call_pending (EV_A);
1286	}	1513	}
1287		1514
		1515	if (expect_false (!activecnt))
		1516	break;
		1517
1288	/* we might have forked, so reify kernel state if necessary */	1518	/* we might have forked, so reify kernel state if necessary */
1289	if (expect_false (postfork))	1519	if (expect_false (postfork))
1290	loop_fork (EV_A);	1520	loop_fork (EV_A);
1291		1521
1292	/* update fd-related kernel structures */	1522	/* update fd-related kernel structures */
1293	fd_reify (EV_A);	1523	fd_reify (EV_A);
1294		1524
1295	/* calculate blocking time */	1525	/* calculate blocking time */
1296	{	1526	{
1297	double block;	1527	ev_tstamp waittime = 0.;
		1528	ev_tstamp sleeptime = 0.;
1298		1529
1299	if (flags & EVLOOP_NONBLOCK || idlecnt)	1530	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1300	block = 0.; /* do not block at all */
1301	else
1302	{	1531	{
1303	/* update time to cancel out callback processing overhead */	1532	/* update time to cancel out callback processing overhead */
1304	#if EV_USE_MONOTONIC
1305	if (expect_true (have_monotonic))
1306	time_update_monotonic (EV_A);	1533	time_update (EV_A_ 1e100);
1307	else
1308	#endif
1309	{
1310	ev_rt_now = ev_time ();
1311	mn_now = ev_rt_now;
1312	}
1313		1534
1314	block = MAX_BLOCKTIME;	1535	waittime = MAX_BLOCKTIME;
1315		1536
1316	if (timercnt)	1537	if (timercnt)
1317	{	1538	{
1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1539	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1319	if (block > to) block = to;	1540	if (waittime > to) waittime = to;
1320	}	1541	}
1321		1542
1322	#if EV_PERIODIC_ENABLE	1543	#if EV_PERIODIC_ENABLE
1323	if (periodiccnt)	1544	if (periodiccnt)
1324	{	1545	{
1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1546	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1326	if (block > to) block = to;	1547	if (waittime > to) waittime = to;
1327	}	1548	}
1328	#endif	1549	#endif
1329		1550
1330	if (expect_false (block < 0.)) block = 0.;	1551	if (expect_false (waittime < timeout_blocktime))
		1552	waittime = timeout_blocktime;
		1553
		1554	sleeptime = waittime - backend_fudge;
		1555
		1556	if (expect_true (sleeptime > io_blocktime))
		1557	sleeptime = io_blocktime;
		1558
		1559	if (sleeptime)
		1560	{
		1561	ev_sleep (sleeptime);
		1562	waittime -= sleeptime;
		1563	}
1331	}	1564	}
1332		1565
		1566	++loop_count;
1333	backend_poll (EV_A_ block);	1567	backend_poll (EV_A_ waittime);
		1568
		1569	/* update ev_rt_now, do magic */
		1570	time_update (EV_A_ waittime + sleeptime);
1334	}	1571	}
1335
1336	/* update ev_rt_now, do magic */
1337	time_update (EV_A);
1338		1572
1339	/* queue pending timers and reschedule them */	1573	/* queue pending timers and reschedule them */
1340	timers_reify (EV_A); /* relative timers called last */	1574	timers_reify (EV_A); /* relative timers called last */
1341	#if EV_PERIODIC_ENABLE	1575	#if EV_PERIODIC_ENABLE
1342	periodics_reify (EV_A); /* absolute timers called first */	1576	periodics_reify (EV_A); /* absolute timers called first */
1343	#endif	1577	#endif
1344		1578
		1579	#if EV_IDLE_ENABLE
1345	/* queue idle watchers unless other events are pending */	1580	/* queue idle watchers unless other events are pending */
1346	if (idlecnt && !any_pending (EV_A))	1581	idle_reify (EV_A);
1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1582	#endif
1348		1583
1349	/* queue check watchers, to be executed first */	1584	/* queue check watchers, to be executed first */
1350	if (expect_false (checkcnt))	1585	if (expect_false (checkcnt))
1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1586	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1352		1587
1353	call_pending (EV_A);	1588	call_pending (EV_A);
1354		1589
1355	if (expect_false (loop_done))
1356	break;
1357	}	1590	}
		1591	while (expect_true (activecnt && !loop_done));
1358		1592
1359	if (loop_done == EVUNLOOP_ONE)	1593	if (loop_done == EVUNLOOP_ONE)
1360	loop_done = EVUNLOOP_CANCEL;	1594	loop_done = EVUNLOOP_CANCEL;
1361	}	1595	}
1362		1596
…		…
1389	head = &(*head)->next;	1623	head = &(*head)->next;
1390	}	1624	}
1391	}	1625	}
1392		1626
1393	void inline_speed	1627	void inline_speed
1394	ev_clear_pending (EV_P_ W w)	1628	clear_pending (EV_P_ W w)
1395	{	1629	{
1396	if (w->pending)	1630	if (w->pending)
1397	{	1631	{
1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1632	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1399	w->pending = 0;	1633	w->pending = 0;
1400	}	1634	}
1401	}	1635	}
1402		1636
		1637	int
		1638	ev_clear_pending (EV_P_ void *w)
		1639	{
		1640	W w_ = (W)w;
		1641	int pending = w_->pending;
		1642
		1643	if (expect_true (pending))
		1644	{
		1645	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1646	w_->pending = 0;
		1647	p->w = 0;
		1648	return p->events;
		1649	}
		1650	else
		1651	return 0;
		1652	}
		1653
		1654	void inline_size
		1655	pri_adjust (EV_P_ W w)
		1656	{
		1657	int pri = w->priority;
		1658	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1659	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1660	w->priority = pri;
		1661	}
		1662
1403	void inline_speed	1663	void inline_speed
1404	ev_start (EV_P_ W w, int active)	1664	ev_start (EV_P_ W w, int active)
1405	{	1665	{
1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1666	pri_adjust (EV_A_ w);
1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1408
1409	w->active = active;	1667	w->active = active;
1410	ev_ref (EV_A);	1668	ev_ref (EV_A);
1411	}	1669	}
1412		1670
1413	void inline_size	1671	void inline_size
…		…
1417	w->active = 0;	1675	w->active = 0;
1418	}	1676	}
1419		1677
1420	/*****************************************************************************/	1678	/*****************************************************************************/
1421		1679
1422	void	1680	void noinline
1423	ev_io_start (EV_P_ ev_io *w)	1681	ev_io_start (EV_P_ ev_io *w)
1424	{	1682	{
1425	int fd = w->fd;	1683	int fd = w->fd;
1426		1684
1427	if (expect_false (ev_is_active (w)))	1685	if (expect_false (ev_is_active (w)))
…		…
1429		1687
1430	assert (("ev_io_start called with negative fd", fd >= 0));	1688	assert (("ev_io_start called with negative fd", fd >= 0));
1431		1689
1432	ev_start (EV_A_ (W)w, 1);	1690	ev_start (EV_A_ (W)w, 1);
1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1691	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1692	wlist_add (&anfds[fd].head, (WL)w);
1435		1693
1436	fd_change (EV_A_ fd);	1694	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1695	w->events &= ~EV_IOFDSET;
1437	}	1696	}
1438		1697
1439	void	1698	void noinline
1440	ev_io_stop (EV_P_ ev_io *w)	1699	ev_io_stop (EV_P_ ev_io *w)
1441	{	1700	{
1442	ev_clear_pending (EV_A_ (W)w);	1701	clear_pending (EV_A_ (W)w);
1443	if (expect_false (!ev_is_active (w)))	1702	if (expect_false (!ev_is_active (w)))
1444	return;	1703	return;
1445		1704
1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1705	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1447		1706
1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1707	wlist_del (&anfds[w->fd].head, (WL)w);
1449	ev_stop (EV_A_ (W)w);	1708	ev_stop (EV_A_ (W)w);
1450		1709
1451	fd_change (EV_A_ w->fd);	1710	fd_change (EV_A_ w->fd, 1);
1452	}	1711	}
1453		1712
1454	void	1713	void noinline
1455	ev_timer_start (EV_P_ ev_timer *w)	1714	ev_timer_start (EV_P_ ev_timer *w)
1456	{	1715	{
1457	if (expect_false (ev_is_active (w)))	1716	if (expect_false (ev_is_active (w)))
1458	return;	1717	return;
1459		1718
1460	((WT)w)->at += mn_now;	1719	((WT)w)->at += mn_now;
1461		1720
1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1721	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1463		1722
1464	ev_start (EV_A_ (W)w, ++timercnt);	1723	ev_start (EV_A_ (W)w, ++timercnt);
1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1724	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1466	timers [timercnt - 1] = w;	1725	timers [timercnt - 1] = (WT)w;
1467	upheap ((WT *)timers, timercnt - 1);	1726	upheap (timers, timercnt - 1);
1468		1727
1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1728	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1470	}	1729	}
1471		1730
1472	void	1731	void noinline
1473	ev_timer_stop (EV_P_ ev_timer *w)	1732	ev_timer_stop (EV_P_ ev_timer *w)
1474	{	1733	{
1475	ev_clear_pending (EV_A_ (W)w);	1734	clear_pending (EV_A_ (W)w);
1476	if (expect_false (!ev_is_active (w)))	1735	if (expect_false (!ev_is_active (w)))
1477	return;	1736	return;
1478		1737
1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1738	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1480		1739
		1740	{
		1741	int active = ((W)w)->active;
		1742
1481	if (expect_true (((W)w)->active < timercnt--))	1743	if (expect_true (--active < --timercnt))
1482	{	1744	{
1483	timers [((W)w)->active - 1] = timers [timercnt];	1745	timers [active] = timers [timercnt];
1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1746	adjustheap (timers, timercnt, active);
1485	}	1747	}
		1748	}
1486		1749
1487	((WT)w)->at -= mn_now;	1750	((WT)w)->at -= mn_now;
1488		1751
1489	ev_stop (EV_A_ (W)w);	1752	ev_stop (EV_A_ (W)w);
1490	}	1753	}
1491		1754
1492	void	1755	void noinline
1493	ev_timer_again (EV_P_ ev_timer *w)	1756	ev_timer_again (EV_P_ ev_timer *w)
1494	{	1757	{
1495	if (ev_is_active (w))	1758	if (ev_is_active (w))
1496	{	1759	{
1497	if (w->repeat)	1760	if (w->repeat)
1498	{	1761	{
1499	((WT)w)->at = mn_now + w->repeat;	1762	((WT)w)->at = mn_now + w->repeat;
1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1763	adjustheap (timers, timercnt, ((W)w)->active - 1);
1501	}	1764	}
1502	else	1765	else
1503	ev_timer_stop (EV_A_ w);	1766	ev_timer_stop (EV_A_ w);
1504	}	1767	}
1505	else if (w->repeat)	1768	else if (w->repeat)
…		…
1508	ev_timer_start (EV_A_ w);	1771	ev_timer_start (EV_A_ w);
1509	}	1772	}
1510	}	1773	}
1511		1774
1512	#if EV_PERIODIC_ENABLE	1775	#if EV_PERIODIC_ENABLE
1513	void	1776	void noinline
1514	ev_periodic_start (EV_P_ ev_periodic *w)	1777	ev_periodic_start (EV_P_ ev_periodic *w)
1515	{	1778	{
1516	if (expect_false (ev_is_active (w)))	1779	if (expect_false (ev_is_active (w)))
1517	return;	1780	return;
1518		1781
…		…
1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1783	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1521	else if (w->interval)	1784	else if (w->interval)
1522	{	1785	{
1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1786	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1524	/* this formula differs from the one in periodic_reify because we do not always round up */	1787	/* this formula differs from the one in periodic_reify because we do not always round up */
1525	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1788	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1526	}	1789	}
		1790	else
		1791	((WT)w)->at = w->offset;
1527		1792
1528	ev_start (EV_A_ (W)w, ++periodiccnt);	1793	ev_start (EV_A_ (W)w, ++periodiccnt);
1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1794	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1530	periodics [periodiccnt - 1] = w;	1795	periodics [periodiccnt - 1] = (WT)w;
1531	upheap ((WT *)periodics, periodiccnt - 1);	1796	upheap (periodics, periodiccnt - 1);
1532		1797
1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1798	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1534	}	1799	}
1535		1800
1536	void	1801	void noinline
1537	ev_periodic_stop (EV_P_ ev_periodic *w)	1802	ev_periodic_stop (EV_P_ ev_periodic *w)
1538	{	1803	{
1539	ev_clear_pending (EV_A_ (W)w);	1804	clear_pending (EV_A_ (W)w);
1540	if (expect_false (!ev_is_active (w)))	1805	if (expect_false (!ev_is_active (w)))
1541	return;	1806	return;
1542		1807
1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1808	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1544		1809
		1810	{
		1811	int active = ((W)w)->active;
		1812
1545	if (expect_true (((W)w)->active < periodiccnt--))	1813	if (expect_true (--active < --periodiccnt))
1546	{	1814	{
1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1815	periodics [active] = periodics [periodiccnt];
1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1816	adjustheap (periodics, periodiccnt, active);
1549	}	1817	}
		1818	}
1550		1819
1551	ev_stop (EV_A_ (W)w);	1820	ev_stop (EV_A_ (W)w);
1552	}	1821	}
1553		1822
1554	void	1823	void noinline
1555	ev_periodic_again (EV_P_ ev_periodic *w)	1824	ev_periodic_again (EV_P_ ev_periodic *w)
1556	{	1825	{
1557	/* TODO: use adjustheap and recalculation */	1826	/* TODO: use adjustheap and recalculation */
1558	ev_periodic_stop (EV_A_ w);	1827	ev_periodic_stop (EV_A_ w);
1559	ev_periodic_start (EV_A_ w);	1828	ev_periodic_start (EV_A_ w);
…		…
1562		1831
1563	#ifndef SA_RESTART	1832	#ifndef SA_RESTART
1564	# define SA_RESTART 0	1833	# define SA_RESTART 0
1565	#endif	1834	#endif
1566		1835
1567	void	1836	void noinline
1568	ev_signal_start (EV_P_ ev_signal *w)	1837	ev_signal_start (EV_P_ ev_signal *w)
1569	{	1838	{
1570	#if EV_MULTIPLICITY	1839	#if EV_MULTIPLICITY
1571	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1840	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1572	#endif	1841	#endif
1573	if (expect_false (ev_is_active (w)))	1842	if (expect_false (ev_is_active (w)))
1574	return;	1843	return;
1575		1844
1576	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1845	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1577		1846
		1847	{
		1848	#ifndef _WIN32
		1849	sigset_t full, prev;
		1850	sigfillset (&full);
		1851	sigprocmask (SIG_SETMASK, &full, &prev);
		1852	#endif
		1853
		1854	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1855
		1856	#ifndef _WIN32
		1857	sigprocmask (SIG_SETMASK, &prev, 0);
		1858	#endif
		1859	}
		1860
1578	ev_start (EV_A_ (W)w, 1);	1861	ev_start (EV_A_ (W)w, 1);
1579	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1580	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1862	wlist_add (&signals [w->signum - 1].head, (WL)w);
1581		1863
1582	if (!((WL)w)->next)	1864	if (!((WL)w)->next)
1583	{	1865	{
1584	#if _WIN32	1866	#if _WIN32
1585	signal (w->signum, sighandler);	1867	signal (w->signum, sighandler);
…		…
1591	sigaction (w->signum, &sa, 0);	1873	sigaction (w->signum, &sa, 0);
1592	#endif	1874	#endif
1593	}	1875	}
1594	}	1876	}
1595		1877
1596	void	1878	void noinline
1597	ev_signal_stop (EV_P_ ev_signal *w)	1879	ev_signal_stop (EV_P_ ev_signal *w)
1598	{	1880	{
1599	ev_clear_pending (EV_A_ (W)w);	1881	clear_pending (EV_A_ (W)w);
1600	if (expect_false (!ev_is_active (w)))	1882	if (expect_false (!ev_is_active (w)))
1601	return;	1883	return;
1602		1884
1603	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1885	wlist_del (&signals [w->signum - 1].head, (WL)w);
1604	ev_stop (EV_A_ (W)w);	1886	ev_stop (EV_A_ (W)w);
1605		1887
1606	if (!signals [w->signum - 1].head)	1888	if (!signals [w->signum - 1].head)
1607	signal (w->signum, SIG_DFL);	1889	signal (w->signum, SIG_DFL);
1608	}	1890	}
…		…
1615	#endif	1897	#endif
1616	if (expect_false (ev_is_active (w)))	1898	if (expect_false (ev_is_active (w)))
1617	return;	1899	return;
1618		1900
1619	ev_start (EV_A_ (W)w, 1);	1901	ev_start (EV_A_ (W)w, 1);
1620	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1902	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1621	}	1903	}
1622		1904
1623	void	1905	void
1624	ev_child_stop (EV_P_ ev_child *w)	1906	ev_child_stop (EV_P_ ev_child *w)
1625	{	1907	{
1626	ev_clear_pending (EV_A_ (W)w);	1908	clear_pending (EV_A_ (W)w);
1627	if (expect_false (!ev_is_active (w)))	1909	if (expect_false (!ev_is_active (w)))
1628	return;	1910	return;
1629		1911
1630	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1912	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1631	ev_stop (EV_A_ (W)w);	1913	ev_stop (EV_A_ (W)w);
1632	}	1914	}
1633		1915
1634	#if EV_STAT_ENABLE	1916	#if EV_STAT_ENABLE
1635		1917
1636	# ifdef _WIN32	1918	# ifdef _WIN32
		1919	# undef lstat
1637	# define lstat(a,b) stat(a,b)	1920	# define lstat(a,b) _stati64 (a,b)
1638	# endif	1921	# endif
1639		1922
1640	#define DEF_STAT_INTERVAL 5.0074891	1923	#define DEF_STAT_INTERVAL 5.0074891
1641	#define MIN_STAT_INTERVAL 0.1074891	1924	#define MIN_STAT_INTERVAL 0.1074891
		1925
		1926	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1927
		1928	#if EV_USE_INOTIFY
		1929	# define EV_INOTIFY_BUFSIZE 8192
		1930
		1931	static void noinline
		1932	infy_add (EV_P_ ev_stat *w)
		1933	{
		1934	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);
		1935
		1936	if (w->wd < 0)
		1937	{
		1938	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1939
		1940	/* monitor some parent directory for speedup hints */
		1941	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1942	{
		1943	char path [4096];
		1944	strcpy (path, w->path);
		1945
		1946	do
		1947	{
		1948	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1949	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1950
		1951	char *pend = strrchr (path, '/');
		1952
		1953	if (!pend)
		1954	break; /* whoops, no '/', complain to your admin */
		1955
		1956	*pend = 0;
		1957	w->wd = inotify_add_watch (fs_fd, path, mask);
		1958	}
		1959	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1960	}
		1961	}
		1962	else
		1963	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1964
		1965	if (w->wd >= 0)
		1966	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1967	}
		1968
		1969	static void noinline
		1970	infy_del (EV_P_ ev_stat *w)
		1971	{
		1972	int slot;
		1973	int wd = w->wd;
		1974
		1975	if (wd < 0)
		1976	return;
		1977
		1978	w->wd = -2;
		1979	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1980	wlist_del (&fs_hash [slot].head, (WL)w);
		1981
		1982	/* remove this watcher, if others are watching it, they will rearm */
		1983	inotify_rm_watch (fs_fd, wd);
		1984	}
		1985
		1986	static void noinline
		1987	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1988	{
		1989	if (slot < 0)
		1990	/* overflow, need to check for all hahs slots */
		1991	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1992	infy_wd (EV_A_ slot, wd, ev);
		1993	else
		1994	{
		1995	WL w_;
		1996
		1997	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1998	{
		1999	ev_stat *w = (ev_stat *)w_;
		2000	w_ = w_->next; /* lets us remove this watcher and all before it */
		2001
		2002	if (w->wd == wd || wd == -1)
		2003	{
		2004	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2005	{
		2006	w->wd = -1;
		2007	infy_add (EV_A_ w); /* re-add, no matter what */
		2008	}
		2009
		2010	stat_timer_cb (EV_A_ &w->timer, 0);
		2011	}
		2012	}
		2013	}
		2014	}
		2015
		2016	static void
		2017	infy_cb (EV_P_ ev_io *w, int revents)
		2018	{
		2019	char buf [EV_INOTIFY_BUFSIZE];
		2020	struct inotify_event *ev = (struct inotify_event *)buf;
		2021	int ofs;
		2022	int len = read (fs_fd, buf, sizeof (buf));
		2023
		2024	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2025	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2026	}
		2027
		2028	void inline_size
		2029	infy_init (EV_P)
		2030	{
		2031	if (fs_fd != -2)
		2032	return;
		2033
		2034	fs_fd = inotify_init ();
		2035
		2036	if (fs_fd >= 0)
		2037	{
		2038	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2039	ev_set_priority (&fs_w, EV_MAXPRI);
		2040	ev_io_start (EV_A_ &fs_w);
		2041	}
		2042	}
		2043
		2044	void inline_size
		2045	infy_fork (EV_P)
		2046	{
		2047	int slot;
		2048
		2049	if (fs_fd < 0)
		2050	return;
		2051
		2052	close (fs_fd);
		2053	fs_fd = inotify_init ();
		2054
		2055	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2056	{
		2057	WL w_ = fs_hash [slot].head;
		2058	fs_hash [slot].head = 0;
		2059
		2060	while (w_)
		2061	{
		2062	ev_stat *w = (ev_stat *)w_;
		2063	w_ = w_->next; /* lets us add this watcher */
		2064
		2065	w->wd = -1;
		2066
		2067	if (fs_fd >= 0)
		2068	infy_add (EV_A_ w); /* re-add, no matter what */
		2069	else
		2070	ev_timer_start (EV_A_ &w->timer);
		2071	}
		2072
		2073	}
		2074	}
		2075
		2076	#endif
1642		2077
1643	void	2078	void
1644	ev_stat_stat (EV_P_ ev_stat *w)	2079	ev_stat_stat (EV_P_ ev_stat *w)
1645	{	2080	{
1646	if (lstat (w->path, &w->attr) < 0)	2081	if (lstat (w->path, &w->attr) < 0)
1647	w->attr.st_nlink = 0;	2082	w->attr.st_nlink = 0;
1648	else if (!w->attr.st_nlink)	2083	else if (!w->attr.st_nlink)
1649	w->attr.st_nlink = 1;	2084	w->attr.st_nlink = 1;
1650	}	2085	}
1651		2086
1652	static void	2087	static void noinline
1653	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2088	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1654	{	2089	{
1655	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	2090	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1656		2091
1657	/* we copy this here each the time so that */	2092	/* we copy this here each the time so that */
1658	/* prev has the old value when the callback gets invoked */	2093	/* prev has the old value when the callback gets invoked */
1659	w->prev = w->attr;	2094	w->prev = w->attr;
1660	ev_stat_stat (EV_A_ w);	2095	ev_stat_stat (EV_A_ w);
1661		2096
1662	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2097	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2098	if (
		2099	w->prev.st_dev != w->attr.st_dev
		2100	|| w->prev.st_ino != w->attr.st_ino
		2101	|| w->prev.st_mode != w->attr.st_mode
		2102	|| w->prev.st_nlink != w->attr.st_nlink
		2103	|| w->prev.st_uid != w->attr.st_uid
		2104	|| w->prev.st_gid != w->attr.st_gid
		2105	|| w->prev.st_rdev != w->attr.st_rdev
		2106	|| w->prev.st_size != w->attr.st_size
		2107	|| w->prev.st_atime != w->attr.st_atime
		2108	|| w->prev.st_mtime != w->attr.st_mtime
		2109	|| w->prev.st_ctime != w->attr.st_ctime
		2110	) {
		2111	#if EV_USE_INOTIFY
		2112	infy_del (EV_A_ w);
		2113	infy_add (EV_A_ w);
		2114	ev_stat_stat (EV_A_ w); /* avoid race... */
		2115	#endif
		2116
1663	ev_feed_event (EV_A_ w, EV_STAT);	2117	ev_feed_event (EV_A_ w, EV_STAT);
		2118	}
1664	}	2119	}
1665		2120
1666	void	2121	void
1667	ev_stat_start (EV_P_ ev_stat *w)	2122	ev_stat_start (EV_P_ ev_stat *w)
1668	{	2123	{
…		…
1678	if (w->interval < MIN_STAT_INTERVAL)	2133	if (w->interval < MIN_STAT_INTERVAL)
1679	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2134	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1680		2135
1681	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2136	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1682	ev_set_priority (&w->timer, ev_priority (w));	2137	ev_set_priority (&w->timer, ev_priority (w));
		2138
		2139	#if EV_USE_INOTIFY
		2140	infy_init (EV_A);
		2141
		2142	if (fs_fd >= 0)
		2143	infy_add (EV_A_ w);
		2144	else
		2145	#endif
1683	ev_timer_start (EV_A_ &w->timer);	2146	ev_timer_start (EV_A_ &w->timer);
1684		2147
1685	ev_start (EV_A_ (W)w, 1);	2148	ev_start (EV_A_ (W)w, 1);
1686	}	2149	}
1687		2150
1688	void	2151	void
1689	ev_stat_stop (EV_P_ ev_stat *w)	2152	ev_stat_stop (EV_P_ ev_stat *w)
1690	{	2153	{
1691	ev_clear_pending (EV_A_ (W)w);	2154	clear_pending (EV_A_ (W)w);
1692	if (expect_false (!ev_is_active (w)))	2155	if (expect_false (!ev_is_active (w)))
1693	return;	2156	return;
1694		2157
		2158	#if EV_USE_INOTIFY
		2159	infy_del (EV_A_ w);
		2160	#endif
1695	ev_timer_stop (EV_A_ &w->timer);	2161	ev_timer_stop (EV_A_ &w->timer);
1696		2162
1697	ev_stop (EV_A_ (W)w);	2163	ev_stop (EV_A_ (W)w);
1698	}	2164	}
1699	#endif	2165	#endif
1700		2166
		2167	#if EV_IDLE_ENABLE
1701	void	2168	void
1702	ev_idle_start (EV_P_ ev_idle *w)	2169	ev_idle_start (EV_P_ ev_idle *w)
1703	{	2170	{
1704	if (expect_false (ev_is_active (w)))	2171	if (expect_false (ev_is_active (w)))
1705	return;	2172	return;
1706		2173
		2174	pri_adjust (EV_A_ (W)w);
		2175
		2176	{
		2177	int active = ++idlecnt [ABSPRI (w)];
		2178
		2179	++idleall;
1707	ev_start (EV_A_ (W)w, ++idlecnt);	2180	ev_start (EV_A_ (W)w, active);
		2181
1708	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2182	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1709	idles [idlecnt - 1] = w;	2183	idles [ABSPRI (w)][active - 1] = w;
		2184	}
1710	}	2185	}
1711		2186
1712	void	2187	void
1713	ev_idle_stop (EV_P_ ev_idle *w)	2188	ev_idle_stop (EV_P_ ev_idle *w)
1714	{	2189	{
1715	ev_clear_pending (EV_A_ (W)w);	2190	clear_pending (EV_A_ (W)w);
1716	if (expect_false (!ev_is_active (w)))	2191	if (expect_false (!ev_is_active (w)))
1717	return;	2192	return;
1718		2193
1719	{	2194	{
1720	int active = ((W)w)->active;	2195	int active = ((W)w)->active;
1721	idles [active - 1] = idles [--idlecnt];	2196
		2197	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1722	((W)idles [active - 1])->active = active;	2198	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2199
		2200	ev_stop (EV_A_ (W)w);
		2201	--idleall;
1723	}	2202	}
1724
1725	ev_stop (EV_A_ (W)w);
1726	}	2203	}
		2204	#endif
1727		2205
1728	void	2206	void
1729	ev_prepare_start (EV_P_ ev_prepare *w)	2207	ev_prepare_start (EV_P_ ev_prepare *w)
1730	{	2208	{
1731	if (expect_false (ev_is_active (w)))	2209	if (expect_false (ev_is_active (w)))
…		…
1737	}	2215	}
1738		2216
1739	void	2217	void
1740	ev_prepare_stop (EV_P_ ev_prepare *w)	2218	ev_prepare_stop (EV_P_ ev_prepare *w)
1741	{	2219	{
1742	ev_clear_pending (EV_A_ (W)w);	2220	clear_pending (EV_A_ (W)w);
1743	if (expect_false (!ev_is_active (w)))	2221	if (expect_false (!ev_is_active (w)))
1744	return;	2222	return;
1745		2223
1746	{	2224	{
1747	int active = ((W)w)->active;	2225	int active = ((W)w)->active;
…		…
1764	}	2242	}
1765		2243
1766	void	2244	void
1767	ev_check_stop (EV_P_ ev_check *w)	2245	ev_check_stop (EV_P_ ev_check *w)
1768	{	2246	{
1769	ev_clear_pending (EV_A_ (W)w);	2247	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	2248	if (expect_false (!ev_is_active (w)))
1771	return;	2249	return;
1772		2250
1773	{	2251	{
1774	int active = ((W)w)->active;	2252	int active = ((W)w)->active;
…		…
1781		2259
1782	#if EV_EMBED_ENABLE	2260	#if EV_EMBED_ENABLE
1783	void noinline	2261	void noinline
1784	ev_embed_sweep (EV_P_ ev_embed *w)	2262	ev_embed_sweep (EV_P_ ev_embed *w)
1785	{	2263	{
1786	ev_loop (w->loop, EVLOOP_NONBLOCK);	2264	ev_loop (w->other, EVLOOP_NONBLOCK);
1787	}	2265	}
1788		2266
1789	static void	2267	static void
1790	embed_cb (EV_P_ ev_io *io, int revents)	2268	embed_io_cb (EV_P_ ev_io *io, int revents)
1791	{	2269	{
1792	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2270	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
1793		2271
1794	if (ev_cb (w))	2272	if (ev_cb (w))
1795	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2273	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1796	else	2274	else
1797	ev_embed_sweep (loop, w);	2275	ev_loop (w->other, EVLOOP_NONBLOCK);
1798	}	2276	}
		2277
		2278	static void
		2279	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2280	{
		2281	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2282
		2283	{
		2284	struct ev_loop *loop = w->other;
		2285
		2286	while (fdchangecnt)
		2287	{
		2288	fd_reify (EV_A);
		2289	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2290	}
		2291	}
		2292	}
		2293
		2294	#if 0
		2295	static void
		2296	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2297	{
		2298	ev_idle_stop (EV_A_ idle);
		2299	}
		2300	#endif
1799		2301
1800	void	2302	void
1801	ev_embed_start (EV_P_ ev_embed *w)	2303	ev_embed_start (EV_P_ ev_embed *w)
1802	{	2304	{
1803	if (expect_false (ev_is_active (w)))	2305	if (expect_false (ev_is_active (w)))
1804	return;	2306	return;
1805		2307
1806	{	2308	{
1807	struct ev_loop *loop = w->loop;	2309	struct ev_loop *loop = w->other;
1808	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2310	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1809	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2311	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1810	}	2312	}
1811		2313
1812	ev_set_priority (&w->io, ev_priority (w));	2314	ev_set_priority (&w->io, ev_priority (w));
1813	ev_io_start (EV_A_ &w->io);	2315	ev_io_start (EV_A_ &w->io);
1814		2316
		2317	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2318	ev_set_priority (&w->prepare, EV_MINPRI);
		2319	ev_prepare_start (EV_A_ &w->prepare);
		2320
		2321	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2322
1815	ev_start (EV_A_ (W)w, 1);	2323	ev_start (EV_A_ (W)w, 1);
1816	}	2324	}
1817		2325
1818	void	2326	void
1819	ev_embed_stop (EV_P_ ev_embed *w)	2327	ev_embed_stop (EV_P_ ev_embed *w)
1820	{	2328	{
1821	ev_clear_pending (EV_A_ (W)w);	2329	clear_pending (EV_A_ (W)w);
1822	if (expect_false (!ev_is_active (w)))	2330	if (expect_false (!ev_is_active (w)))
1823	return;	2331	return;
1824		2332
1825	ev_io_stop (EV_A_ &w->io);	2333	ev_io_stop (EV_A_ &w->io);
		2334	ev_prepare_stop (EV_A_ &w->prepare);
		2335
		2336	ev_stop (EV_A_ (W)w);
		2337	}
		2338	#endif
		2339
		2340	#if EV_FORK_ENABLE
		2341	void
		2342	ev_fork_start (EV_P_ ev_fork *w)
		2343	{
		2344	if (expect_false (ev_is_active (w)))
		2345	return;
		2346
		2347	ev_start (EV_A_ (W)w, ++forkcnt);
		2348	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2349	forks [forkcnt - 1] = w;
		2350	}
		2351
		2352	void
		2353	ev_fork_stop (EV_P_ ev_fork *w)
		2354	{
		2355	clear_pending (EV_A_ (W)w);
		2356	if (expect_false (!ev_is_active (w)))
		2357	return;
		2358
		2359	{
		2360	int active = ((W)w)->active;
		2361	forks [active - 1] = forks [--forkcnt];
		2362	((W)forks [active - 1])->active = active;
		2363	}
1826		2364
1827	ev_stop (EV_A_ (W)w);	2365	ev_stop (EV_A_ (W)w);
1828	}	2366	}
1829	#endif	2367	#endif
1830		2368
…		…
1890	ev_timer_set (&once->to, timeout, 0.);	2428	ev_timer_set (&once->to, timeout, 0.);
1891	ev_timer_start (EV_A_ &once->to);	2429	ev_timer_start (EV_A_ &once->to);
1892	}	2430	}
1893	}	2431	}
1894		2432
		2433	#if EV_MULTIPLICITY
		2434	#include "ev_wrap.h"
		2435	#endif
		2436
1895	#ifdef __cplusplus	2437	#ifdef __cplusplus
1896	}	2438	}
1897	#endif	2439	#endif
1898		2440

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