ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.142 by root, Tue Nov 27 06:19:08 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 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_minimal 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	#if EV_USE_MONOTONIC
		286	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		287	/* giving it a reasonably high chance of working on typical architetcures */
220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	288	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		289	#endif
221		290
222	#ifdef _WIN32	291	#ifdef _WIN32
223	# include "ev_win32.c"	292	# include "ev_win32.c"
224	#endif	293	#endif
225		294
…		…
254	ev_set_allocator (void *(*cb)(void *ptr, long size))	323	ev_set_allocator (void *(*cb)(void *ptr, long size))
255	{	324	{
256	alloc = cb;	325	alloc = cb;
257	}	326	}
258		327
259	static void *	328	inline_speed void *
260	ev_realloc (void *ptr, long size)	329	ev_realloc (void *ptr, long size)
261	{	330	{
262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	331	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
263		332
264	if (!ptr && size)	333	if (!ptr && size)
…		…
288	typedef struct	357	typedef struct
289	{	358	{
290	W w;	359	W w;
291	int events;	360	int events;
292	} ANPENDING;	361	} ANPENDING;
		362
		363	#if EV_USE_INOTIFY
		364	typedef struct
		365	{
		366	WL head;
		367	} ANFS;
		368	#endif
293		369
294	#if EV_MULTIPLICITY	370	#if EV_MULTIPLICITY
295		371
296	struct ev_loop	372	struct ev_loop
297	{	373	{
…		…
354	{	430	{
355	return ev_rt_now;	431	return ev_rt_now;
356	}	432	}
357	#endif	433	#endif
358		434
359	#define array_roundsize(type,n) (((n) | 4) & ~3)	435	void
		436	ev_sleep (ev_tstamp delay)
		437	{
		438	if (delay > 0.)
		439	{
		440	#if EV_USE_NANOSLEEP
		441	struct timespec ts;
		442
		443	ts.tv_sec = (time_t)delay;
		444	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		445
		446	nanosleep (&ts, 0);
		447	#elif defined(_WIN32)
		448	Sleep (delay * 1e3);
		449	#else
		450	struct timeval tv;
		451
		452	tv.tv_sec = (time_t)delay;
		453	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		454
		455	select (0, 0, 0, 0, &tv);
		456	#endif
		457	}
		458	}
		459
		460	/*****************************************************************************/
		461
		462	int inline_size
		463	array_nextsize (int elem, int cur, int cnt)
		464	{
		465	int ncur = cur + 1;
		466
		467	do
		468	ncur <<= 1;
		469	while (cnt > ncur);
		470
		471	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		472	if (elem * ncur > 4096)
		473	{
		474	ncur *= elem;
		475	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		476	ncur = ncur - sizeof (void *) * 4;
		477	ncur /= elem;
		478	}
		479
		480	return ncur;
		481	}
		482
		483	static noinline void *
		484	array_realloc (int elem, void *base, int *cur, int cnt)
		485	{
		486	*cur = array_nextsize (elem, *cur, cnt);
		487	return ev_realloc (base, elem * *cur);
		488	}
360		489
361	#define array_needsize(type,base,cur,cnt,init) \	490	#define array_needsize(type,base,cur,cnt,init) \
362	if (expect_false ((cnt) > cur)) \	491	if (expect_false ((cnt) > (cur))) \
363	{ \	492	{ \
364	int newcnt = cur; \	493	int ocur_ = (cur); \
365	do \	494	(base) = (type *)array_realloc \
366	{ \	495	(sizeof (type), (base), &(cur), (cnt)); \
367	newcnt = array_roundsize (type, newcnt << 1); \	496	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	}	497	}
375		498
		499	#if 0
376	#define array_slim(type,stem) \	500	#define array_slim(type,stem) \
377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	501	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
378	{ \	502	{ \
379	stem ## max = array_roundsize (stem ## cnt >> 1); \	503	stem ## max = array_roundsize (stem ## cnt >> 1); \
380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\	504	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	505	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
382	}	506	}
		507	#endif
383		508
384	#define array_free(stem, idx) \	509	#define array_free(stem, idx) \
385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	510	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
386		511
387	/*****************************************************************************/	512	/*****************************************************************************/
388		513
389	void noinline	514	void noinline
390	ev_feed_event (EV_P_ void *w, int revents)	515	ev_feed_event (EV_P_ void *w, int revents)
391	{	516	{
392	W w_ = (W)w;	517	W w_ = (W)w;
		518	int pri = ABSPRI (w_);
393		519
394	if (expect_false (w_->pending))	520	if (expect_false (w_->pending))
		521	pendings [pri][w_->pending - 1].events |= revents;
		522	else
395	{	523	{
		524	w_->pending = ++pendingcnt [pri];
		525	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		526	pendings [pri][w_->pending - 1].w = w_;
396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;	527	pendings [pri][w_->pending - 1].events = revents;
397	return;
398	}	528	}
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	}	529	}
405		530
406	void inline_size	531	void inline_speed
407	queue_events (EV_P_ W *events, int eventcnt, int type)	532	queue_events (EV_P_ W *events, int eventcnt, int type)
408	{	533	{
409	int i;	534	int i;
410		535
411	for (i = 0; i < eventcnt; ++i)	536	for (i = 0; i < eventcnt; ++i)
…		…
443	}	568	}
444		569
445	void	570	void
446	ev_feed_fd_event (EV_P_ int fd, int revents)	571	ev_feed_fd_event (EV_P_ int fd, int revents)
447	{	572	{
		573	if (fd >= 0 && fd < anfdmax)
448	fd_event (EV_A_ fd, revents);	574	fd_event (EV_A_ fd, revents);
449	}	575	}
450		576
451	void inline_size	577	void inline_size
452	fd_reify (EV_P)	578	fd_reify (EV_P)
453	{	579	{
…		…
457	{	583	{
458	int fd = fdchanges [i];	584	int fd = fdchanges [i];
459	ANFD *anfd = anfds + fd;	585	ANFD *anfd = anfds + fd;
460	ev_io *w;	586	ev_io *w;
461		587
462	int events = 0;	588	unsigned char events = 0;
463		589
464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	590	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
465	events |= w->events;	591	events |= (unsigned char)w->events;
466		592
467	#if EV_SELECT_IS_WINSOCKET	593	#if EV_SELECT_IS_WINSOCKET
468	if (events)	594	if (events)
469	{	595	{
470	unsigned long argp;	596	unsigned long argp;
471	anfd->handle = _get_osfhandle (fd);	597	anfd->handle = _get_osfhandle (fd);
472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	598	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
473	}	599	}
474	#endif	600	#endif
475		601
		602	{
		603	unsigned char o_events = anfd->events;
		604	unsigned char o_reify = anfd->reify;
		605
476	anfd->reify = 0;	606	anfd->reify = 0;
477
478	backend_modify (EV_A_ fd, anfd->events, events);
479	anfd->events = events;	607	anfd->events = events;
		608
		609	if (o_events != events || o_reify & EV_IOFDSET)
		610	backend_modify (EV_A_ fd, o_events, events);
		611	}
480	}	612	}
481		613
482	fdchangecnt = 0;	614	fdchangecnt = 0;
483	}	615	}
484		616
485	void inline_size	617	void inline_size
486	fd_change (EV_P_ int fd)	618	fd_change (EV_P_ int fd, int flags)
487	{	619	{
488	if (expect_false (anfds [fd].reify))	620	unsigned char reify = anfds [fd].reify;
489	return;
490
491	anfds [fd].reify = 1;	621	anfds [fd].reify |= flags;
492		622
		623	if (expect_true (!reify))
		624	{
493	++fdchangecnt;	625	++fdchangecnt;
494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	626	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
495	fdchanges [fdchangecnt - 1] = fd;	627	fdchanges [fdchangecnt - 1] = fd;
		628	}
496	}	629	}
497		630
498	void inline_speed	631	void inline_speed
499	fd_kill (EV_P_ int fd)	632	fd_kill (EV_P_ int fd)
500	{	633	{
…		…
547	static void noinline	680	static void noinline
548	fd_rearm_all (EV_P)	681	fd_rearm_all (EV_P)
549	{	682	{
550	int fd;	683	int fd;
551		684
552	/* this should be highly optimised to not do anything but set a flag */
553	for (fd = 0; fd < anfdmax; ++fd)	685	for (fd = 0; fd < anfdmax; ++fd)
554	if (anfds [fd].events)	686	if (anfds [fd].events)
555	{	687	{
556	anfds [fd].events = 0;	688	anfds [fd].events = 0;
557	fd_change (EV_A_ fd);	689	fd_change (EV_A_ fd, EV_IOFDSET | 1);
558	}	690	}
559	}	691	}
560		692
561	/*****************************************************************************/	693	/*****************************************************************************/
562		694
563	void inline_speed	695	void inline_speed
564	upheap (WT *heap, int k)	696	upheap (WT *heap, int k)
565	{	697	{
566	WT w = heap [k];	698	WT w = heap [k];
567		699
568	while (k && heap [k >> 1]->at > w->at)	700	while (k)
569	{	701	{
		702	int p = (k - 1) >> 1;
		703
		704	if (heap [p]->at <= w->at)
		705	break;
		706
570	heap [k] = heap [k >> 1];	707	heap [k] = heap [p];
571	((W)heap [k])->active = k + 1;	708	((W)heap [k])->active = k + 1;
572	k >>= 1;	709	k = p;
573	}	710	}
574		711
575	heap [k] = w;	712	heap [k] = w;
576	((W)heap [k])->active = k + 1;	713	((W)heap [k])->active = k + 1;
577
578	}	714	}
579		715
580	void inline_speed	716	void inline_speed
581	downheap (WT *heap, int N, int k)	717	downheap (WT *heap, int N, int k)
582	{	718	{
583	WT w = heap [k];	719	WT w = heap [k];
584		720
585	while (k < (N >> 1))	721	for (;;)
586	{	722	{
587	int j = k << 1;	723	int c = (k << 1) + 1;
588		724
589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	725	if (c >= N)
590	++j;
591
592	if (w->at <= heap [j]->at)
593	break;	726	break;
594		727
		728	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		729	? 1 : 0;
		730
		731	if (w->at <= heap [c]->at)
		732	break;
		733
595	heap [k] = heap [j];	734	heap [k] = heap [c];
596	((W)heap [k])->active = k + 1;	735	((W)heap [k])->active = k + 1;
		736
597	k = j;	737	k = c;
598	}	738	}
599		739
600	heap [k] = w;	740	heap [k] = w;
601	((W)heap [k])->active = k + 1;	741	((W)heap [k])->active = k + 1;
602	}	742	}
…		…
684	for (signum = signalmax; signum--; )	824	for (signum = signalmax; signum--; )
685	if (signals [signum].gotsig)	825	if (signals [signum].gotsig)
686	ev_feed_signal_event (EV_A_ signum + 1);	826	ev_feed_signal_event (EV_A_ signum + 1);
687	}	827	}
688		828
689	void inline_size	829	void inline_speed
690	fd_intern (int fd)	830	fd_intern (int fd)
691	{	831	{
692	#ifdef _WIN32	832	#ifdef _WIN32
693	int arg = 1;	833	int arg = 1;
694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	834	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
709	ev_unref (EV_A); /* child watcher should not keep loop alive */	849	ev_unref (EV_A); /* child watcher should not keep loop alive */
710	}	850	}
711		851
712	/*****************************************************************************/	852	/*****************************************************************************/
713		853
714	static ev_child *childs [PID_HASHSIZE];	854	static WL childs [EV_PID_HASHSIZE];
715		855
716	#ifndef _WIN32	856	#ifndef _WIN32
717		857
718	static ev_signal childev;	858	static ev_signal childev;
719		859
720	void inline_speed	860	void inline_speed
721	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	861	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
722	{	862	{
723	ev_child *w;	863	ev_child *w;
724		864
725	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	865	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
726	if (w->pid == pid || !w->pid)	866	if (w->pid == pid || !w->pid)
727	{	867	{
728	ev_priority (w) = ev_priority (sw); /* need to do it *now* */	868	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
729	w->rpid = pid;	869	w->rpid = pid;
730	w->rstatus = status;	870	w->rstatus = status;
731	ev_feed_event (EV_A_ (W)w, EV_CHILD);	871	ev_feed_event (EV_A_ (W)w, EV_CHILD);
732	}	872	}
733	}	873	}
734		874
735	#ifndef WCONTINUED	875	#ifndef WCONTINUED
…		…
751	/* make sure we are called again until all childs have been reaped */	891	/* 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 */	892	/* 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);	893	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
754		894
755	child_reap (EV_A_ sw, pid, pid, status);	895	child_reap (EV_A_ sw, pid, pid, status);
		896	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 */	897	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
757	}	898	}
758		899
759	#endif	900	#endif
760		901
761	/*****************************************************************************/	902	/*****************************************************************************/
…		…
833	}	974	}
834		975
835	unsigned int	976	unsigned int
836	ev_embeddable_backends (void)	977	ev_embeddable_backends (void)
837	{	978	{
838	return EVBACKEND_EPOLL	979	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
839	| EVBACKEND_KQUEUE	980
840	| EVBACKEND_PORT;	981	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		982	/* please fix it and tell me how to detect the fix */
		983	flags &= ~EVBACKEND_EPOLL;
		984
		985	return flags;
841	}	986	}
842		987
843	unsigned int	988	unsigned int
844	ev_backend (EV_P)	989	ev_backend (EV_P)
845	{	990	{
846	return backend;	991	return backend;
847	}	992	}
848		993
849	static void	994	unsigned int
		995	ev_loop_count (EV_P)
		996	{
		997	return loop_count;
		998	}
		999
		1000	void
		1001	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1002	{
		1003	io_blocktime = interval;
		1004	}
		1005
		1006	void
		1007	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1008	{
		1009	timeout_blocktime = interval;
		1010	}
		1011
		1012	static void noinline
850	loop_init (EV_P_ unsigned int flags)	1013	loop_init (EV_P_ unsigned int flags)
851	{	1014	{
852	if (!backend)	1015	if (!backend)
853	{	1016	{
854	#if EV_USE_MONOTONIC	1017	#if EV_USE_MONOTONIC
…		…
862	ev_rt_now = ev_time ();	1025	ev_rt_now = ev_time ();
863	mn_now = get_clock ();	1026	mn_now = get_clock ();
864	now_floor = mn_now;	1027	now_floor = mn_now;
865	rtmn_diff = ev_rt_now - mn_now;	1028	rtmn_diff = ev_rt_now - mn_now;
866		1029
		1030	io_blocktime = 0.;
		1031	timeout_blocktime = 0.;
		1032
		1033	/* pid check not overridable via env */
		1034	#ifndef _WIN32
		1035	if (flags & EVFLAG_FORKCHECK)
		1036	curpid = getpid ();
		1037	#endif
		1038
867	if (!(flags & EVFLAG_NOENV)	1039	if (!(flags & EVFLAG_NOENV)
868	&& !enable_secure ()	1040	&& !enable_secure ()
869	&& getenv ("LIBEV_FLAGS"))	1041	&& getenv ("LIBEV_FLAGS"))
870	flags = atoi (getenv ("LIBEV_FLAGS"));	1042	flags = atoi (getenv ("LIBEV_FLAGS"));
871		1043
872	if (!(flags & 0x0000ffffUL))	1044	if (!(flags & 0x0000ffffUL))
873	flags |= ev_recommended_backends ();	1045	flags |= ev_recommended_backends ();
874		1046
875	backend = 0;	1047	backend = 0;
		1048	backend_fd = -1;
		1049	#if EV_USE_INOTIFY
		1050	fs_fd = -2;
		1051	#endif
		1052
876	#if EV_USE_PORT	1053	#if EV_USE_PORT
877	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1054	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
878	#endif	1055	#endif
879	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
880	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1057	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
892	ev_init (&sigev, sigcb);	1069	ev_init (&sigev, sigcb);
893	ev_set_priority (&sigev, EV_MAXPRI);	1070	ev_set_priority (&sigev, EV_MAXPRI);
894	}	1071	}
895	}	1072	}
896		1073
897	static void	1074	static void noinline
898	loop_destroy (EV_P)	1075	loop_destroy (EV_P)
899	{	1076	{
900	int i;	1077	int i;
		1078
		1079	#if EV_USE_INOTIFY
		1080	if (fs_fd >= 0)
		1081	close (fs_fd);
		1082	#endif
		1083
		1084	if (backend_fd >= 0)
		1085	close (backend_fd);
901		1086
902	#if EV_USE_PORT	1087	#if EV_USE_PORT
903	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1088	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
904	#endif	1089	#endif
905	#if EV_USE_KQUEUE	1090	#if EV_USE_KQUEUE
…		…
914	#if EV_USE_SELECT	1099	#if EV_USE_SELECT
915	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1100	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
916	#endif	1101	#endif
917		1102
918	for (i = NUMPRI; i--; )	1103	for (i = NUMPRI; i--; )
		1104	{
919	array_free (pending, [i]);	1105	array_free (pending, [i]);
		1106	#if EV_IDLE_ENABLE
		1107	array_free (idle, [i]);
		1108	#endif
		1109	}
		1110
		1111	ev_free (anfds); anfdmax = 0;
920		1112
921	/* have to use the microsoft-never-gets-it-right macro */	1113	/* have to use the microsoft-never-gets-it-right macro */
922	array_free (fdchange, EMPTY0);	1114	array_free (fdchange, EMPTY);
923	array_free (timer, EMPTY0);	1115	array_free (timer, EMPTY);
924	#if EV_PERIODIC_ENABLE	1116	#if EV_PERIODIC_ENABLE
925	array_free (periodic, EMPTY0);	1117	array_free (periodic, EMPTY);
926	#endif	1118	#endif
		1119	#if EV_FORK_ENABLE
927	array_free (idle, EMPTY0);	1120	array_free (fork, EMPTY);
		1121	#endif
928	array_free (prepare, EMPTY0);	1122	array_free (prepare, EMPTY);
929	array_free (check, EMPTY0);	1123	array_free (check, EMPTY);
930		1124
931	backend = 0;	1125	backend = 0;
932	}	1126	}
933		1127
934	static void	1128	void inline_size infy_fork (EV_P);
		1129
		1130	void inline_size
935	loop_fork (EV_P)	1131	loop_fork (EV_P)
936	{	1132	{
937	#if EV_USE_PORT	1133	#if EV_USE_PORT
938	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1134	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
939	#endif	1135	#endif
940	#if EV_USE_KQUEUE	1136	#if EV_USE_KQUEUE
941	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1137	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
942	#endif	1138	#endif
943	#if EV_USE_EPOLL	1139	#if EV_USE_EPOLL
944	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1140	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1141	#endif
		1142	#if EV_USE_INOTIFY
		1143	infy_fork (EV_A);
945	#endif	1144	#endif
946		1145
947	if (ev_is_active (&sigev))	1146	if (ev_is_active (&sigev))
948	{	1147	{
949	/* default loop */	1148	/* default loop */
…		…
1065	postfork = 1;	1264	postfork = 1;
1066	}	1265	}
1067		1266
1068	/*****************************************************************************/	1267	/*****************************************************************************/
1069		1268
1070	int inline_size	1269	void
1071	any_pending (EV_P)	1270	ev_invoke (EV_P_ void *w, int revents)
1072	{	1271	{
1073	int pri;	1272	EV_CB_INVOKE ((W)w, revents);
1074
1075	for (pri = NUMPRI; pri--; )
1076	if (pendingcnt [pri])
1077	return 1;
1078
1079	return 0;
1080	}	1273	}
1081		1274
1082	void inline_speed	1275	void inline_speed
1083	call_pending (EV_P)	1276	call_pending (EV_P)
1084	{	1277	{
…		…
1089	{	1282	{
1090	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1283	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1091		1284
1092	if (expect_true (p->w))	1285	if (expect_true (p->w))
1093	{	1286	{
1094	assert (("non-pending watcher on pending list", p->w->pending));	1287	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1095		1288
1096	p->w->pending = 0;	1289	p->w->pending = 0;
1097	EV_CB_INVOKE (p->w, p->events);	1290	EV_CB_INVOKE (p->w, p->events);
1098	}	1291	}
1099	}	1292	}
…		…
1102	void inline_size	1295	void inline_size
1103	timers_reify (EV_P)	1296	timers_reify (EV_P)
1104	{	1297	{
1105	while (timercnt && ((WT)timers [0])->at <= mn_now)	1298	while (timercnt && ((WT)timers [0])->at <= mn_now)
1106	{	1299	{
1107	ev_timer *w = timers [0];	1300	ev_timer *w = (ev_timer *)timers [0];
1108		1301
1109	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1302	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1110		1303
1111	/* first reschedule or stop timer */	1304	/* first reschedule or stop timer */
1112	if (w->repeat)	1305	if (w->repeat)
1113	{	1306	{
1114	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1307	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1115		1308
1116	((WT)w)->at += w->repeat;	1309	((WT)w)->at += w->repeat;
1117	if (((WT)w)->at < mn_now)	1310	if (((WT)w)->at < mn_now)
1118	((WT)w)->at = mn_now;	1311	((WT)w)->at = mn_now;
1119		1312
1120	downheap ((WT *)timers, timercnt, 0);	1313	downheap (timers, timercnt, 0);
1121	}	1314	}
1122	else	1315	else
1123	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1316	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1124		1317
1125	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1318	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1130	void inline_size	1323	void inline_size
1131	periodics_reify (EV_P)	1324	periodics_reify (EV_P)
1132	{	1325	{
1133	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1326	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1134	{	1327	{
1135	ev_periodic *w = periodics [0];	1328	ev_periodic *w = (ev_periodic *)periodics [0];
1136		1329
1137	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1330	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1138		1331
1139	/* first reschedule or stop timer */	1332	/* first reschedule or stop timer */
1140	if (w->reschedule_cb)	1333	if (w->reschedule_cb)
1141	{	1334	{
1142	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1335	((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));	1336	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1144	downheap ((WT *)periodics, periodiccnt, 0);	1337	downheap (periodics, periodiccnt, 0);
1145	}	1338	}
1146	else if (w->interval)	1339	else if (w->interval)
1147	{	1340	{
1148	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1341	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1342	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));	1343	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);	1344	downheap (periodics, periodiccnt, 0);
1151	}	1345	}
1152	else	1346	else
1153	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1347	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1154		1348
1155	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1349	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1162	int i;	1356	int i;
1163		1357
1164	/* adjust periodics after time jump */	1358	/* adjust periodics after time jump */
1165	for (i = 0; i < periodiccnt; ++i)	1359	for (i = 0; i < periodiccnt; ++i)
1166	{	1360	{
1167	ev_periodic *w = periodics [i];	1361	ev_periodic *w = (ev_periodic *)periodics [i];
1168		1362
1169	if (w->reschedule_cb)	1363	if (w->reschedule_cb)
1170	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1364	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1171	else if (w->interval)	1365	else if (w->interval)
1172	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1366	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1173	}	1367	}
1174		1368
1175	/* now rebuild the heap */	1369	/* now rebuild the heap */
1176	for (i = periodiccnt >> 1; i--; )	1370	for (i = periodiccnt >> 1; i--; )
1177	downheap ((WT *)periodics, periodiccnt, i);	1371	downheap (periodics, periodiccnt, i);
1178	}	1372	}
1179	#endif	1373	#endif
1180		1374
		1375	#if EV_IDLE_ENABLE
1181	int inline_size	1376	void inline_size
1182	time_update_monotonic (EV_P)	1377	idle_reify (EV_P)
1183	{	1378	{
		1379	if (expect_false (idleall))
		1380	{
		1381	int pri;
		1382
		1383	for (pri = NUMPRI; pri--; )
		1384	{
		1385	if (pendingcnt [pri])
		1386	break;
		1387
		1388	if (idlecnt [pri])
		1389	{
		1390	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1391	break;
		1392	}
		1393	}
		1394	}
		1395	}
		1396	#endif
		1397
		1398	void inline_speed
		1399	time_update (EV_P_ ev_tstamp max_block)
		1400	{
		1401	int i;
		1402
		1403	#if EV_USE_MONOTONIC
		1404	if (expect_true (have_monotonic))
		1405	{
		1406	ev_tstamp odiff = rtmn_diff;
		1407
1184	mn_now = get_clock ();	1408	mn_now = get_clock ();
1185		1409
		1410	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1411	/* interpolate in the meantime */
1186	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1412	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1187	{	1413	{
1188	ev_rt_now = rtmn_diff + mn_now;	1414	ev_rt_now = rtmn_diff + mn_now;
1189	return 0;	1415	return;
1190	}	1416	}
1191	else	1417
1192	{
1193	now_floor = mn_now;	1418	now_floor = mn_now;
1194	ev_rt_now = ev_time ();	1419	ev_rt_now = ev_time ();
1195	return 1;
1196	}
1197	}
1198		1420
1199	void inline_size	1421	/* loop a few times, before making important decisions.
1200	time_update (EV_P)	1422	* on the choice of "4": one iteration isn't enough,
1201	{	1423	* in case we get preempted during the calls to
1202	int i;	1424	* ev_time and get_clock. a second call is almost guaranteed
1203		1425	* to succeed in that case, though. and looping a few more times
1204	#if EV_USE_MONOTONIC	1426	* doesn't hurt either as we only do this on time-jumps or
1205	if (expect_true (have_monotonic))	1427	* in the unlikely event of having been preempted here.
1206	{	1428	*/
1207	if (time_update_monotonic (EV_A))	1429	for (i = 4; --i; )
1208	{	1430	{
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;	1431	rtmn_diff = ev_rt_now - mn_now;
1222		1432
1223	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1433	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1224	return; /* all is well */	1434	return; /* all is well */
1225		1435
1226	ev_rt_now = ev_time ();	1436	ev_rt_now = ev_time ();
1227	mn_now = get_clock ();	1437	mn_now = get_clock ();
1228	now_floor = mn_now;	1438	now_floor = mn_now;
1229	}	1439	}
1230		1440
1231	# if EV_PERIODIC_ENABLE	1441	# if EV_PERIODIC_ENABLE
1232	periodics_reschedule (EV_A);	1442	periodics_reschedule (EV_A);
1233	# endif	1443	# endif
1234	/* no timer adjustment, as the monotonic clock doesn't jump */	1444	/* no timer adjustment, as the monotonic clock doesn't jump */
1235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1445	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1236	}
1237	}	1446	}
1238	else	1447	else
1239	#endif	1448	#endif
1240	{	1449	{
1241	ev_rt_now = ev_time ();	1450	ev_rt_now = ev_time ();
1242		1451
1243	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1452	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1244	{	1453	{
1245	#if EV_PERIODIC_ENABLE	1454	#if EV_PERIODIC_ENABLE
1246	periodics_reschedule (EV_A);	1455	periodics_reschedule (EV_A);
1247	#endif	1456	#endif
1248
1249	/* adjust timers. this is easy, as the offset is the same for all */	1457	/* adjust timers. this is easy, as the offset is the same for all of them */
1250	for (i = 0; i < timercnt; ++i)	1458	for (i = 0; i < timercnt; ++i)
1251	((WT)timers [i])->at += ev_rt_now - mn_now;	1459	((WT)timers [i])->at += ev_rt_now - mn_now;
1252	}	1460	}
1253		1461
1254	mn_now = ev_rt_now;	1462	mn_now = ev_rt_now;
…		…
1274	{	1482	{
1275	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	1483	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
1276	? EVUNLOOP_ONE	1484	? EVUNLOOP_ONE
1277	: EVUNLOOP_CANCEL;	1485	: EVUNLOOP_CANCEL;
1278		1486
1279	while (activecnt)	1487	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1488
		1489	do
1280	{	1490	{
		1491	#ifndef _WIN32
		1492	if (expect_false (curpid)) /* penalise the forking check even more */
		1493	if (expect_false (getpid () != curpid))
		1494	{
		1495	curpid = getpid ();
		1496	postfork = 1;
		1497	}
		1498	#endif
		1499
		1500	#if EV_FORK_ENABLE
		1501	/* we might have forked, so queue fork handlers */
		1502	if (expect_false (postfork))
		1503	if (forkcnt)
		1504	{
		1505	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1506	call_pending (EV_A);
		1507	}
		1508	#endif
		1509
1281	/* queue check watchers (and execute them) */	1510	/* queue prepare watchers (and execute them) */
1282	if (expect_false (preparecnt))	1511	if (expect_false (preparecnt))
1283	{	1512	{
1284	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1513	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1285	call_pending (EV_A);	1514	call_pending (EV_A);
1286	}	1515	}
1287		1516
		1517	if (expect_false (!activecnt))
		1518	break;
		1519
1288	/* we might have forked, so reify kernel state if necessary */	1520	/* we might have forked, so reify kernel state if necessary */
1289	if (expect_false (postfork))	1521	if (expect_false (postfork))
1290	loop_fork (EV_A);	1522	loop_fork (EV_A);
1291		1523
1292	/* update fd-related kernel structures */	1524	/* update fd-related kernel structures */
1293	fd_reify (EV_A);	1525	fd_reify (EV_A);
1294		1526
1295	/* calculate blocking time */	1527	/* calculate blocking time */
1296	{	1528	{
1297	double block;	1529	ev_tstamp waittime = 0.;
		1530	ev_tstamp sleeptime = 0.;
1298		1531
1299	if (flags & EVLOOP_NONBLOCK || idlecnt)	1532	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1300	block = 0.; /* do not block at all */
1301	else
1302	{	1533	{
1303	/* update time to cancel out callback processing overhead */	1534	/* 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);	1535	time_update (EV_A_ 1e100);
1307	else
1308	#endif
1309	{
1310	ev_rt_now = ev_time ();
1311	mn_now = ev_rt_now;
1312	}
1313		1536
1314	block = MAX_BLOCKTIME;	1537	waittime = MAX_BLOCKTIME;
1315		1538
1316	if (timercnt)	1539	if (timercnt)
1317	{	1540	{
1318	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1541	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1319	if (block > to) block = to;	1542	if (waittime > to) waittime = to;
1320	}	1543	}
1321		1544
1322	#if EV_PERIODIC_ENABLE	1545	#if EV_PERIODIC_ENABLE
1323	if (periodiccnt)	1546	if (periodiccnt)
1324	{	1547	{
1325	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1548	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1326	if (block > to) block = to;	1549	if (waittime > to) waittime = to;
1327	}	1550	}
1328	#endif	1551	#endif
1329		1552
1330	if (expect_false (block < 0.)) block = 0.;	1553	if (expect_false (waittime < timeout_blocktime))
		1554	waittime = timeout_blocktime;
		1555
		1556	sleeptime = waittime - backend_fudge;
		1557
		1558	if (expect_true (sleeptime > io_blocktime))
		1559	sleeptime = io_blocktime;
		1560
		1561	if (sleeptime)
		1562	{
		1563	ev_sleep (sleeptime);
		1564	waittime -= sleeptime;
		1565	}
1331	}	1566	}
1332		1567
		1568	++loop_count;
1333	backend_poll (EV_A_ block);	1569	backend_poll (EV_A_ waittime);
		1570
		1571	/* update ev_rt_now, do magic */
		1572	time_update (EV_A_ waittime + sleeptime);
1334	}	1573	}
1335
1336	/* update ev_rt_now, do magic */
1337	time_update (EV_A);
1338		1574
1339	/* queue pending timers and reschedule them */	1575	/* queue pending timers and reschedule them */
1340	timers_reify (EV_A); /* relative timers called last */	1576	timers_reify (EV_A); /* relative timers called last */
1341	#if EV_PERIODIC_ENABLE	1577	#if EV_PERIODIC_ENABLE
1342	periodics_reify (EV_A); /* absolute timers called first */	1578	periodics_reify (EV_A); /* absolute timers called first */
1343	#endif	1579	#endif
1344		1580
		1581	#if EV_IDLE_ENABLE
1345	/* queue idle watchers unless other events are pending */	1582	/* queue idle watchers unless other events are pending */
1346	if (idlecnt && !any_pending (EV_A))	1583	idle_reify (EV_A);
1347	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1584	#endif
1348		1585
1349	/* queue check watchers, to be executed first */	1586	/* queue check watchers, to be executed first */
1350	if (expect_false (checkcnt))	1587	if (expect_false (checkcnt))
1351	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1588	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1352		1589
1353	call_pending (EV_A);	1590	call_pending (EV_A);
1354		1591
1355	if (expect_false (loop_done))
1356	break;
1357	}	1592	}
		1593	while (expect_true (activecnt && !loop_done));
1358		1594
1359	if (loop_done == EVUNLOOP_ONE)	1595	if (loop_done == EVUNLOOP_ONE)
1360	loop_done = EVUNLOOP_CANCEL;	1596	loop_done = EVUNLOOP_CANCEL;
1361	}	1597	}
1362		1598
…		…
1389	head = &(*head)->next;	1625	head = &(*head)->next;
1390	}	1626	}
1391	}	1627	}
1392		1628
1393	void inline_speed	1629	void inline_speed
1394	ev_clear_pending (EV_P_ W w)	1630	clear_pending (EV_P_ W w)
1395	{	1631	{
1396	if (w->pending)	1632	if (w->pending)
1397	{	1633	{
1398	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1634	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1399	w->pending = 0;	1635	w->pending = 0;
1400	}	1636	}
1401	}	1637	}
1402		1638
		1639	int
		1640	ev_clear_pending (EV_P_ void *w)
		1641	{
		1642	W w_ = (W)w;
		1643	int pending = w_->pending;
		1644
		1645	if (expect_true (pending))
		1646	{
		1647	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1648	w_->pending = 0;
		1649	p->w = 0;
		1650	return p->events;
		1651	}
		1652	else
		1653	return 0;
		1654	}
		1655
		1656	void inline_size
		1657	pri_adjust (EV_P_ W w)
		1658	{
		1659	int pri = w->priority;
		1660	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1661	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1662	w->priority = pri;
		1663	}
		1664
1403	void inline_speed	1665	void inline_speed
1404	ev_start (EV_P_ W w, int active)	1666	ev_start (EV_P_ W w, int active)
1405	{	1667	{
1406	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1668	pri_adjust (EV_A_ w);
1407	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1408
1409	w->active = active;	1669	w->active = active;
1410	ev_ref (EV_A);	1670	ev_ref (EV_A);
1411	}	1671	}
1412		1672
1413	void inline_size	1673	void inline_size
…		…
1417	w->active = 0;	1677	w->active = 0;
1418	}	1678	}
1419		1679
1420	/*****************************************************************************/	1680	/*****************************************************************************/
1421		1681
1422	void	1682	void noinline
1423	ev_io_start (EV_P_ ev_io *w)	1683	ev_io_start (EV_P_ ev_io *w)
1424	{	1684	{
1425	int fd = w->fd;	1685	int fd = w->fd;
1426		1686
1427	if (expect_false (ev_is_active (w)))	1687	if (expect_false (ev_is_active (w)))
…		…
1429		1689
1430	assert (("ev_io_start called with negative fd", fd >= 0));	1690	assert (("ev_io_start called with negative fd", fd >= 0));
1431		1691
1432	ev_start (EV_A_ (W)w, 1);	1692	ev_start (EV_A_ (W)w, 1);
1433	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1693	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1434	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1694	wlist_add (&anfds[fd].head, (WL)w);
1435		1695
1436	fd_change (EV_A_ fd);	1696	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
		1697	w->events &= ~EV_IOFDSET;
1437	}	1698	}
1438		1699
1439	void	1700	void noinline
1440	ev_io_stop (EV_P_ ev_io *w)	1701	ev_io_stop (EV_P_ ev_io *w)
1441	{	1702	{
1442	ev_clear_pending (EV_A_ (W)w);	1703	clear_pending (EV_A_ (W)w);
1443	if (expect_false (!ev_is_active (w)))	1704	if (expect_false (!ev_is_active (w)))
1444	return;	1705	return;
1445		1706
1446	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1707	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1447		1708
1448	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1709	wlist_del (&anfds[w->fd].head, (WL)w);
1449	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1450		1711
1451	fd_change (EV_A_ w->fd);	1712	fd_change (EV_A_ w->fd, 1);
1452	}	1713	}
1453		1714
1454	void	1715	void noinline
1455	ev_timer_start (EV_P_ ev_timer *w)	1716	ev_timer_start (EV_P_ ev_timer *w)
1456	{	1717	{
1457	if (expect_false (ev_is_active (w)))	1718	if (expect_false (ev_is_active (w)))
1458	return;	1719	return;
1459		1720
1460	((WT)w)->at += mn_now;	1721	((WT)w)->at += mn_now;
1461		1722
1462	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1723	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1463		1724
1464	ev_start (EV_A_ (W)w, ++timercnt);	1725	ev_start (EV_A_ (W)w, ++timercnt);
1465	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1726	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1466	timers [timercnt - 1] = w;	1727	timers [timercnt - 1] = (WT)w;
1467	upheap ((WT *)timers, timercnt - 1);	1728	upheap (timers, timercnt - 1);
1468		1729
1469	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1730	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
1470	}	1731	}
1471		1732
1472	void	1733	void noinline
1473	ev_timer_stop (EV_P_ ev_timer *w)	1734	ev_timer_stop (EV_P_ ev_timer *w)
1474	{	1735	{
1475	ev_clear_pending (EV_A_ (W)w);	1736	clear_pending (EV_A_ (W)w);
1476	if (expect_false (!ev_is_active (w)))	1737	if (expect_false (!ev_is_active (w)))
1477	return;	1738	return;
1478		1739
1479	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1740	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1480		1741
		1742	{
		1743	int active = ((W)w)->active;
		1744
1481	if (expect_true (((W)w)->active < timercnt--))	1745	if (expect_true (--active < --timercnt))
1482	{	1746	{
1483	timers [((W)w)->active - 1] = timers [timercnt];	1747	timers [active] = timers [timercnt];
1484	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1748	adjustheap (timers, timercnt, active);
1485	}	1749	}
		1750	}
1486		1751
1487	((WT)w)->at -= mn_now;	1752	((WT)w)->at -= mn_now;
1488		1753
1489	ev_stop (EV_A_ (W)w);	1754	ev_stop (EV_A_ (W)w);
1490	}	1755	}
1491		1756
1492	void	1757	void noinline
1493	ev_timer_again (EV_P_ ev_timer *w)	1758	ev_timer_again (EV_P_ ev_timer *w)
1494	{	1759	{
1495	if (ev_is_active (w))	1760	if (ev_is_active (w))
1496	{	1761	{
1497	if (w->repeat)	1762	if (w->repeat)
1498	{	1763	{
1499	((WT)w)->at = mn_now + w->repeat;	1764	((WT)w)->at = mn_now + w->repeat;
1500	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1765	adjustheap (timers, timercnt, ((W)w)->active - 1);
1501	}	1766	}
1502	else	1767	else
1503	ev_timer_stop (EV_A_ w);	1768	ev_timer_stop (EV_A_ w);
1504	}	1769	}
1505	else if (w->repeat)	1770	else if (w->repeat)
…		…
1508	ev_timer_start (EV_A_ w);	1773	ev_timer_start (EV_A_ w);
1509	}	1774	}
1510	}	1775	}
1511		1776
1512	#if EV_PERIODIC_ENABLE	1777	#if EV_PERIODIC_ENABLE
1513	void	1778	void noinline
1514	ev_periodic_start (EV_P_ ev_periodic *w)	1779	ev_periodic_start (EV_P_ ev_periodic *w)
1515	{	1780	{
1516	if (expect_false (ev_is_active (w)))	1781	if (expect_false (ev_is_active (w)))
1517	return;	1782	return;
1518		1783
…		…
1520	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1785	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1521	else if (w->interval)	1786	else if (w->interval)
1522	{	1787	{
1523	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1788	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 */	1789	/* 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;	1790	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1526	}	1791	}
		1792	else
		1793	((WT)w)->at = w->offset;
1527		1794
1528	ev_start (EV_A_ (W)w, ++periodiccnt);	1795	ev_start (EV_A_ (W)w, ++periodiccnt);
1529	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1796	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1530	periodics [periodiccnt - 1] = w;	1797	periodics [periodiccnt - 1] = (WT)w;
1531	upheap ((WT *)periodics, periodiccnt - 1);	1798	upheap (periodics, periodiccnt - 1);
1532		1799
1533	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1800	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
1534	}	1801	}
1535		1802
1536	void	1803	void noinline
1537	ev_periodic_stop (EV_P_ ev_periodic *w)	1804	ev_periodic_stop (EV_P_ ev_periodic *w)
1538	{	1805	{
1539	ev_clear_pending (EV_A_ (W)w);	1806	clear_pending (EV_A_ (W)w);
1540	if (expect_false (!ev_is_active (w)))	1807	if (expect_false (!ev_is_active (w)))
1541	return;	1808	return;
1542		1809
1543	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1810	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1544		1811
		1812	{
		1813	int active = ((W)w)->active;
		1814
1545	if (expect_true (((W)w)->active < periodiccnt--))	1815	if (expect_true (--active < --periodiccnt))
1546	{	1816	{
1547	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1817	periodics [active] = periodics [periodiccnt];
1548	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1818	adjustheap (periodics, periodiccnt, active);
1549	}	1819	}
		1820	}
1550		1821
1551	ev_stop (EV_A_ (W)w);	1822	ev_stop (EV_A_ (W)w);
1552	}	1823	}
1553		1824
1554	void	1825	void noinline
1555	ev_periodic_again (EV_P_ ev_periodic *w)	1826	ev_periodic_again (EV_P_ ev_periodic *w)
1556	{	1827	{
1557	/* TODO: use adjustheap and recalculation */	1828	/* TODO: use adjustheap and recalculation */
1558	ev_periodic_stop (EV_A_ w);	1829	ev_periodic_stop (EV_A_ w);
1559	ev_periodic_start (EV_A_ w);	1830	ev_periodic_start (EV_A_ w);
1560	}	1831	}
1561	#endif	1832	#endif
1562		1833
1563	void
1564	ev_idle_start (EV_P_ ev_idle *w)
1565	{
1566	if (expect_false (ev_is_active (w)))
1567	return;
1568
1569	ev_start (EV_A_ (W)w, ++idlecnt);
1570	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1571	idles [idlecnt - 1] = w;
1572	}
1573
1574	void
1575	ev_idle_stop (EV_P_ ev_idle *w)
1576	{
1577	ev_clear_pending (EV_A_ (W)w);
1578	if (expect_false (!ev_is_active (w)))
1579	return;
1580
1581	{
1582	int active = ((W)w)->active;
1583	idles [active - 1] = idles [--idlecnt];
1584	((W)idles [active - 1])->active = active;
1585	}
1586
1587	ev_stop (EV_A_ (W)w);
1588	}
1589
1590	void
1591	ev_prepare_start (EV_P_ ev_prepare *w)
1592	{
1593	if (expect_false (ev_is_active (w)))
1594	return;
1595
1596	ev_start (EV_A_ (W)w, ++preparecnt);
1597	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1598	prepares [preparecnt - 1] = w;
1599	}
1600
1601	void
1602	ev_prepare_stop (EV_P_ ev_prepare *w)
1603	{
1604	ev_clear_pending (EV_A_ (W)w);
1605	if (expect_false (!ev_is_active (w)))
1606	return;
1607
1608	{
1609	int active = ((W)w)->active;
1610	prepares [active - 1] = prepares [--preparecnt];
1611	((W)prepares [active - 1])->active = active;
1612	}
1613
1614	ev_stop (EV_A_ (W)w);
1615	}
1616
1617	void
1618	ev_check_start (EV_P_ ev_check *w)
1619	{
1620	if (expect_false (ev_is_active (w)))
1621	return;
1622
1623	ev_start (EV_A_ (W)w, ++checkcnt);
1624	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1625	checks [checkcnt - 1] = w;
1626	}
1627
1628	void
1629	ev_check_stop (EV_P_ ev_check *w)
1630	{
1631	ev_clear_pending (EV_A_ (W)w);
1632	if (expect_false (!ev_is_active (w)))
1633	return;
1634
1635	{
1636	int active = ((W)w)->active;
1637	checks [active - 1] = checks [--checkcnt];
1638	((W)checks [active - 1])->active = active;
1639	}
1640
1641	ev_stop (EV_A_ (W)w);
1642	}
1643
1644	#ifndef SA_RESTART	1834	#ifndef SA_RESTART
1645	# define SA_RESTART 0	1835	# define SA_RESTART 0
1646	#endif	1836	#endif
1647		1837
1648	void	1838	void noinline
1649	ev_signal_start (EV_P_ ev_signal *w)	1839	ev_signal_start (EV_P_ ev_signal *w)
1650	{	1840	{
1651	#if EV_MULTIPLICITY	1841	#if EV_MULTIPLICITY
1652	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1842	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1653	#endif	1843	#endif
1654	if (expect_false (ev_is_active (w)))	1844	if (expect_false (ev_is_active (w)))
1655	return;	1845	return;
1656		1846
1657	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1847	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1658		1848
		1849	{
		1850	#ifndef _WIN32
		1851	sigset_t full, prev;
		1852	sigfillset (&full);
		1853	sigprocmask (SIG_SETMASK, &full, &prev);
		1854	#endif
		1855
		1856	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1857
		1858	#ifndef _WIN32
		1859	sigprocmask (SIG_SETMASK, &prev, 0);
		1860	#endif
		1861	}
		1862
1659	ev_start (EV_A_ (W)w, 1);	1863	ev_start (EV_A_ (W)w, 1);
1660	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1661	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1864	wlist_add (&signals [w->signum - 1].head, (WL)w);
1662		1865
1663	if (!((WL)w)->next)	1866	if (!((WL)w)->next)
1664	{	1867	{
1665	#if _WIN32	1868	#if _WIN32
1666	signal (w->signum, sighandler);	1869	signal (w->signum, sighandler);
…		…
1672	sigaction (w->signum, &sa, 0);	1875	sigaction (w->signum, &sa, 0);
1673	#endif	1876	#endif
1674	}	1877	}
1675	}	1878	}
1676		1879
1677	void	1880	void noinline
1678	ev_signal_stop (EV_P_ ev_signal *w)	1881	ev_signal_stop (EV_P_ ev_signal *w)
1679	{	1882	{
1680	ev_clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1681	if (expect_false (!ev_is_active (w)))	1884	if (expect_false (!ev_is_active (w)))
1682	return;	1885	return;
1683		1886
1684	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1887	wlist_del (&signals [w->signum - 1].head, (WL)w);
1685	ev_stop (EV_A_ (W)w);	1888	ev_stop (EV_A_ (W)w);
1686		1889
1687	if (!signals [w->signum - 1].head)	1890	if (!signals [w->signum - 1].head)
1688	signal (w->signum, SIG_DFL);	1891	signal (w->signum, SIG_DFL);
1689	}	1892	}
…		…
1696	#endif	1899	#endif
1697	if (expect_false (ev_is_active (w)))	1900	if (expect_false (ev_is_active (w)))
1698	return;	1901	return;
1699		1902
1700	ev_start (EV_A_ (W)w, 1);	1903	ev_start (EV_A_ (W)w, 1);
1701	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1904	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1702	}	1905	}
1703		1906
1704	void	1907	void
1705	ev_child_stop (EV_P_ ev_child *w)	1908	ev_child_stop (EV_P_ ev_child *w)
1706	{	1909	{
1707	ev_clear_pending (EV_A_ (W)w);	1910	clear_pending (EV_A_ (W)w);
1708	if (expect_false (!ev_is_active (w)))	1911	if (expect_false (!ev_is_active (w)))
1709	return;	1912	return;
1710		1913
1711	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1914	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1712	ev_stop (EV_A_ (W)w);	1915	ev_stop (EV_A_ (W)w);
1713	}	1916	}
1714		1917
1715	#if EV_EMBED_ENABLE	1918	#if EV_STAT_ENABLE
		1919
		1920	# ifdef _WIN32
		1921	# undef lstat
		1922	# define lstat(a,b) _stati64 (a,b)
		1923	# endif
		1924
		1925	#define DEF_STAT_INTERVAL 5.0074891
		1926	#define MIN_STAT_INTERVAL 0.1074891
		1927
		1928	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1929
		1930	#if EV_USE_INOTIFY
		1931	# define EV_INOTIFY_BUFSIZE 8192
		1932
1716	void noinline	1933	static void noinline
1717	ev_embed_sweep (EV_P_ ev_embed *w)	1934	infy_add (EV_P_ ev_stat *w)
1718	{	1935	{
1719	ev_loop (w->loop, EVLOOP_NONBLOCK);	1936	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);
		1937
		1938	if (w->wd < 0)
		1939	{
		1940	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1941
		1942	/* monitor some parent directory for speedup hints */
		1943	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1944	{
		1945	char path [4096];
		1946	strcpy (path, w->path);
		1947
		1948	do
		1949	{
		1950	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1951	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1952
		1953	char *pend = strrchr (path, '/');
		1954
		1955	if (!pend)
		1956	break; /* whoops, no '/', complain to your admin */
		1957
		1958	*pend = 0;
		1959	w->wd = inotify_add_watch (fs_fd, path, mask);
		1960	}
		1961	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1962	}
		1963	}
		1964	else
		1965	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1966
		1967	if (w->wd >= 0)
		1968	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1969	}
		1970
		1971	static void noinline
		1972	infy_del (EV_P_ ev_stat *w)
		1973	{
		1974	int slot;
		1975	int wd = w->wd;
		1976
		1977	if (wd < 0)
		1978	return;
		1979
		1980	w->wd = -2;
		1981	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1982	wlist_del (&fs_hash [slot].head, (WL)w);
		1983
		1984	/* remove this watcher, if others are watching it, they will rearm */
		1985	inotify_rm_watch (fs_fd, wd);
		1986	}
		1987
		1988	static void noinline
		1989	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1990	{
		1991	if (slot < 0)
		1992	/* overflow, need to check for all hahs slots */
		1993	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1994	infy_wd (EV_A_ slot, wd, ev);
		1995	else
		1996	{
		1997	WL w_;
		1998
		1999	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2000	{
		2001	ev_stat *w = (ev_stat *)w_;
		2002	w_ = w_->next; /* lets us remove this watcher and all before it */
		2003
		2004	if (w->wd == wd || wd == -1)
		2005	{
		2006	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2007	{
		2008	w->wd = -1;
		2009	infy_add (EV_A_ w); /* re-add, no matter what */
		2010	}
		2011
		2012	stat_timer_cb (EV_A_ &w->timer, 0);
		2013	}
		2014	}
		2015	}
1720	}	2016	}
1721		2017
1722	static void	2018	static void
1723	embed_cb (EV_P_ ev_io *io, int revents)	2019	infy_cb (EV_P_ ev_io *w, int revents)
1724	{	2020	{
1725	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	2021	char buf [EV_INOTIFY_BUFSIZE];
		2022	struct inotify_event *ev = (struct inotify_event *)buf;
		2023	int ofs;
		2024	int len = read (fs_fd, buf, sizeof (buf));
1726		2025
1727	if (ev_cb (w))	2026	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
1728	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2027	infy_wd (EV_A_ ev->wd, ev->wd, ev);
1729	else
1730	ev_embed_sweep (loop, w);
1731	}	2028	}
1732		2029
1733	void	2030	void inline_size
1734	ev_embed_start (EV_P_ ev_embed *w)	2031	infy_init (EV_P)
1735	{	2032	{
1736	if (expect_false (ev_is_active (w)))	2033	if (fs_fd != -2)
1737	return;	2034	return;
1738		2035
		2036	fs_fd = inotify_init ();
		2037
		2038	if (fs_fd >= 0)
1739	{	2039	{
1740	struct ev_loop *loop = w->loop;	2040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1741	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2041	ev_set_priority (&fs_w, EV_MAXPRI);
1742	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
1743	}
1744
1745	ev_set_priority (&w->io, ev_priority (w));
1746	ev_io_start (EV_A_ &w->io);	2042	ev_io_start (EV_A_ &fs_w);
1747		2043	}
1748	ev_start (EV_A_ (W)w, 1);
1749	}	2044	}
1750		2045
1751	void	2046	void inline_size
1752	ev_embed_stop (EV_P_ ev_embed *w)	2047	infy_fork (EV_P)
1753	{	2048	{
1754	ev_clear_pending (EV_A_ (W)w);	2049	int slot;
1755	if (expect_false (!ev_is_active (w)))
1756	return;
1757		2050
1758	ev_io_stop (EV_A_ &w->io);	2051	if (fs_fd < 0)
		2052	return;
1759		2053
1760	ev_stop (EV_A_ (W)w);	2054	close (fs_fd);
1761	}	2055	fs_fd = inotify_init ();
1762	#endif
1763		2056
1764	#if EV_STAT_ENABLE	2057	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2058	{
		2059	WL w_ = fs_hash [slot].head;
		2060	fs_hash [slot].head = 0;
1765		2061
1766	# ifdef _WIN32	2062	while (w_)
1767	# define lstat(a,b) stat(a,b)	2063	{
		2064	ev_stat *w = (ev_stat *)w_;
		2065	w_ = w_->next; /* lets us add this watcher */
		2066
		2067	w->wd = -1;
		2068
		2069	if (fs_fd >= 0)
		2070	infy_add (EV_A_ w); /* re-add, no matter what */
		2071	else
		2072	ev_timer_start (EV_A_ &w->timer);
		2073	}
		2074
		2075	}
		2076	}
		2077
1768	# endif	2078	#endif
1769		2079
1770	void	2080	void
1771	ev_stat_stat (EV_P_ ev_stat *w)	2081	ev_stat_stat (EV_P_ ev_stat *w)
1772	{	2082	{
1773	if (lstat (w->path, &w->attr) < 0)	2083	if (lstat (w->path, &w->attr) < 0)
1774	w->attr.st_nlink = 0;	2084	w->attr.st_nlink = 0;
1775	else if (!w->attr.st_nlink)	2085	else if (!w->attr.st_nlink)
1776	w->attr.st_nlink = 1;	2086	w->attr.st_nlink = 1;
1777	}	2087	}
1778		2088
1779	static void	2089	static void noinline
1780	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2090	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1781	{	2091	{
1782	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	2092	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1783		2093
1784	/* we copy this here each the time so that */	2094	/* we copy this here each the time so that */
1785	/* prev has the old value when the callback gets invoked */	2095	/* prev has the old value when the callback gets invoked */
1786	w->prev = w->attr;	2096	w->prev = w->attr;
1787	ev_stat_stat (EV_A_ w);	2097	ev_stat_stat (EV_A_ w);
1788		2098
1789	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2099	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2100	if (
		2101	w->prev.st_dev != w->attr.st_dev
		2102	|| w->prev.st_ino != w->attr.st_ino
		2103	|| w->prev.st_mode != w->attr.st_mode
		2104	|| w->prev.st_nlink != w->attr.st_nlink
		2105	|| w->prev.st_uid != w->attr.st_uid
		2106	|| w->prev.st_gid != w->attr.st_gid
		2107	|| w->prev.st_rdev != w->attr.st_rdev
		2108	|| w->prev.st_size != w->attr.st_size
		2109	|| w->prev.st_atime != w->attr.st_atime
		2110	|| w->prev.st_mtime != w->attr.st_mtime
		2111	|| w->prev.st_ctime != w->attr.st_ctime
		2112	) {
		2113	#if EV_USE_INOTIFY
		2114	infy_del (EV_A_ w);
		2115	infy_add (EV_A_ w);
		2116	ev_stat_stat (EV_A_ w); /* avoid race... */
		2117	#endif
		2118
1790	ev_feed_event (EV_A_ w, EV_STAT);	2119	ev_feed_event (EV_A_ w, EV_STAT);
		2120	}
1791	}	2121	}
1792		2122
1793	void	2123	void
1794	ev_stat_start (EV_P_ ev_stat *w)	2124	ev_stat_start (EV_P_ ev_stat *w)
1795	{	2125	{
…		…
1800	memset (&w->prev, 0, sizeof (ev_statdata));	2130	memset (&w->prev, 0, sizeof (ev_statdata));
1801	memset (&w->attr, 0, sizeof (ev_statdata));	2131	memset (&w->attr, 0, sizeof (ev_statdata));
1802		2132
1803	ev_stat_stat (EV_A_ w);	2133	ev_stat_stat (EV_A_ w);
1804		2134
		2135	if (w->interval < MIN_STAT_INTERVAL)
		2136	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2137
1805	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2138	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1806	ev_set_priority (&w->timer, ev_priority (w));	2139	ev_set_priority (&w->timer, ev_priority (w));
		2140
		2141	#if EV_USE_INOTIFY
		2142	infy_init (EV_A);
		2143
		2144	if (fs_fd >= 0)
		2145	infy_add (EV_A_ w);
		2146	else
		2147	#endif
1807	ev_timer_start (EV_A_ &w->timer);	2148	ev_timer_start (EV_A_ &w->timer);
1808		2149
1809	ev_start (EV_A_ (W)w, 1);	2150	ev_start (EV_A_ (W)w, 1);
1810	}	2151	}
1811		2152
1812	void	2153	void
1813	ev_stat_stop (EV_P_ ev_stat *w)	2154	ev_stat_stop (EV_P_ ev_stat *w)
1814	{	2155	{
1815	ev_clear_pending (EV_A_ (W)w);	2156	clear_pending (EV_A_ (W)w);
1816	if (expect_false (!ev_is_active (w)))	2157	if (expect_false (!ev_is_active (w)))
1817	return;	2158	return;
1818		2159
		2160	#if EV_USE_INOTIFY
		2161	infy_del (EV_A_ w);
		2162	#endif
1819	ev_timer_stop (EV_A_ &w->timer);	2163	ev_timer_stop (EV_A_ &w->timer);
		2164
		2165	ev_stop (EV_A_ (W)w);
		2166	}
		2167	#endif
		2168
		2169	#if EV_IDLE_ENABLE
		2170	void
		2171	ev_idle_start (EV_P_ ev_idle *w)
		2172	{
		2173	if (expect_false (ev_is_active (w)))
		2174	return;
		2175
		2176	pri_adjust (EV_A_ (W)w);
		2177
		2178	{
		2179	int active = ++idlecnt [ABSPRI (w)];
		2180
		2181	++idleall;
		2182	ev_start (EV_A_ (W)w, active);
		2183
		2184	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2185	idles [ABSPRI (w)][active - 1] = w;
		2186	}
		2187	}
		2188
		2189	void
		2190	ev_idle_stop (EV_P_ ev_idle *w)
		2191	{
		2192	clear_pending (EV_A_ (W)w);
		2193	if (expect_false (!ev_is_active (w)))
		2194	return;
		2195
		2196	{
		2197	int active = ((W)w)->active;
		2198
		2199	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2200	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2201
		2202	ev_stop (EV_A_ (W)w);
		2203	--idleall;
		2204	}
		2205	}
		2206	#endif
		2207
		2208	void
		2209	ev_prepare_start (EV_P_ ev_prepare *w)
		2210	{
		2211	if (expect_false (ev_is_active (w)))
		2212	return;
		2213
		2214	ev_start (EV_A_ (W)w, ++preparecnt);
		2215	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		2216	prepares [preparecnt - 1] = w;
		2217	}
		2218
		2219	void
		2220	ev_prepare_stop (EV_P_ ev_prepare *w)
		2221	{
		2222	clear_pending (EV_A_ (W)w);
		2223	if (expect_false (!ev_is_active (w)))
		2224	return;
		2225
		2226	{
		2227	int active = ((W)w)->active;
		2228	prepares [active - 1] = prepares [--preparecnt];
		2229	((W)prepares [active - 1])->active = active;
		2230	}
		2231
		2232	ev_stop (EV_A_ (W)w);
		2233	}
		2234
		2235	void
		2236	ev_check_start (EV_P_ ev_check *w)
		2237	{
		2238	if (expect_false (ev_is_active (w)))
		2239	return;
		2240
		2241	ev_start (EV_A_ (W)w, ++checkcnt);
		2242	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		2243	checks [checkcnt - 1] = w;
		2244	}
		2245
		2246	void
		2247	ev_check_stop (EV_P_ ev_check *w)
		2248	{
		2249	clear_pending (EV_A_ (W)w);
		2250	if (expect_false (!ev_is_active (w)))
		2251	return;
		2252
		2253	{
		2254	int active = ((W)w)->active;
		2255	checks [active - 1] = checks [--checkcnt];
		2256	((W)checks [active - 1])->active = active;
		2257	}
		2258
		2259	ev_stop (EV_A_ (W)w);
		2260	}
		2261
		2262	#if EV_EMBED_ENABLE
		2263	void noinline
		2264	ev_embed_sweep (EV_P_ ev_embed *w)
		2265	{
		2266	ev_loop (w->other, EVLOOP_NONBLOCK);
		2267	}
		2268
		2269	static void
		2270	embed_io_cb (EV_P_ ev_io *io, int revents)
		2271	{
		2272	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2273
		2274	if (ev_cb (w))
		2275	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2276	else
		2277	ev_loop (w->other, EVLOOP_NONBLOCK);
		2278	}
		2279
		2280	static void
		2281	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2282	{
		2283	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2284
		2285	{
		2286	struct ev_loop *loop = w->other;
		2287
		2288	while (fdchangecnt)
		2289	{
		2290	fd_reify (EV_A);
		2291	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2292	}
		2293	}
		2294	}
		2295
		2296	#if 0
		2297	static void
		2298	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2299	{
		2300	ev_idle_stop (EV_A_ idle);
		2301	}
		2302	#endif
		2303
		2304	void
		2305	ev_embed_start (EV_P_ ev_embed *w)
		2306	{
		2307	if (expect_false (ev_is_active (w)))
		2308	return;
		2309
		2310	{
		2311	struct ev_loop *loop = w->other;
		2312	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2313	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2314	}
		2315
		2316	ev_set_priority (&w->io, ev_priority (w));
		2317	ev_io_start (EV_A_ &w->io);
		2318
		2319	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2320	ev_set_priority (&w->prepare, EV_MINPRI);
		2321	ev_prepare_start (EV_A_ &w->prepare);
		2322
		2323	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		2324
		2325	ev_start (EV_A_ (W)w, 1);
		2326	}
		2327
		2328	void
		2329	ev_embed_stop (EV_P_ ev_embed *w)
		2330	{
		2331	clear_pending (EV_A_ (W)w);
		2332	if (expect_false (!ev_is_active (w)))
		2333	return;
		2334
		2335	ev_io_stop (EV_A_ &w->io);
		2336	ev_prepare_stop (EV_A_ &w->prepare);
		2337
		2338	ev_stop (EV_A_ (W)w);
		2339	}
		2340	#endif
		2341
		2342	#if EV_FORK_ENABLE
		2343	void
		2344	ev_fork_start (EV_P_ ev_fork *w)
		2345	{
		2346	if (expect_false (ev_is_active (w)))
		2347	return;
		2348
		2349	ev_start (EV_A_ (W)w, ++forkcnt);
		2350	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2351	forks [forkcnt - 1] = w;
		2352	}
		2353
		2354	void
		2355	ev_fork_stop (EV_P_ ev_fork *w)
		2356	{
		2357	clear_pending (EV_A_ (W)w);
		2358	if (expect_false (!ev_is_active (w)))
		2359	return;
		2360
		2361	{
		2362	int active = ((W)w)->active;
		2363	forks [active - 1] = forks [--forkcnt];
		2364	((W)forks [active - 1])->active = active;
		2365	}
1820		2366
1821	ev_stop (EV_A_ (W)w);	2367	ev_stop (EV_A_ (W)w);
1822	}	2368	}
1823	#endif	2369	#endif
1824		2370
…		…
1884	ev_timer_set (&once->to, timeout, 0.);	2430	ev_timer_set (&once->to, timeout, 0.);
1885	ev_timer_start (EV_A_ &once->to);	2431	ev_timer_start (EV_A_ &once->to);
1886	}	2432	}
1887	}	2433	}
1888		2434
		2435	#if EV_MULTIPLICITY
		2436	#include "ev_wrap.h"
		2437	#endif
		2438
1889	#ifdef __cplusplus	2439	#ifdef __cplusplus
1890	}	2440	}
1891	#endif	2441	#endif
1892		2442

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines