[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.150 by root, Tue Nov 27 19:41:52 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
161	#ifndef EV_PID_HASHSIZE	191	#ifndef EV_PID_HASHSIZE
162	# if EV_MINIMAL	192	# if EV_MINIMAL
163	# define EV_PID_HASHSIZE 1	193	# define EV_PID_HASHSIZE 1
164	# else	194	# else
165	# define EV_PID_HASHSIZE 16	195	# define EV_PID_HASHSIZE 16
166	# endif	196	# endif
167	#endif	197	#endif
168		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
169	/**/	207	/**/
170		208
171	#ifndef CLOCK_MONOTONIC	209	#ifndef CLOCK_MONOTONIC
172	# undef EV_USE_MONOTONIC	210	# undef EV_USE_MONOTONIC
173	# define EV_USE_MONOTONIC 0	211	# define EV_USE_MONOTONIC 0
…		…
176	#ifndef CLOCK_REALTIME	214	#ifndef CLOCK_REALTIME
177	# undef EV_USE_REALTIME	215	# undef EV_USE_REALTIME
178	# define EV_USE_REALTIME 0	216	# define EV_USE_REALTIME 0
179	#endif	217	#endif
180		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
181	#if EV_SELECT_IS_WINSOCKET	234	#if EV_SELECT_IS_WINSOCKET
182	# include <winsock.h>	235	# include <winsock.h>
183	#endif	236	#endif
184		237
185	/**/	238	/**/
186		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
187	#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) */
188	#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) */
189	/#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 */
190		253
191	#ifdef EV_H
192	# include EV_H
193	#else
194	# include "ev.h"
195	#endif
196
197	#if __GNUC__ >= 3	254	#if __GNUC__ >= 4
198	# define expect(expr,value) __builtin_expect ((expr),(value))	255	# define expect(expr,value) __builtin_expect ((expr),(value))
199	# define inline_size static inline /* inline for codesize */
200	# if EV_MINIMAL
201	# define noinline __attribute__ ((noinline))	256	# define noinline __attribute__ ((noinline))
202	# define inline_speed static noinline
203	# else
204	# define noinline
205	# define inline_speed static inline
206	# endif
207	#else	257	#else
208	# define expect(expr,value) (expr)	258	# define expect(expr,value) (expr)
209	# define inline_speed static
210	# define inline_size static
211	# define noinline	259	# define noinline
		260	# if __STDC_VERSION__ < 199901L
		261	# define inline
		262	# endif
212	#endif	263	#endif
213		264
214	#define expect_false(expr) expect ((expr) != 0, 0)	265	#define expect_false(expr) expect ((expr) != 0, 0)
215	#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
216		274
217	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	275	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
218	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	276	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
219		277
220	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */	278	#define EMPTY /* required for microsofts broken pseudo-c compiler */
221	#define EMPTY2(a,b) /* used to suppress some warnings */	279	#define EMPTY2(a,b) /* used to suppress some warnings */
222		280
223	typedef ev_watcher *W;	281	typedef ev_watcher *W;
224	typedef ev_watcher_list *WL;	282	typedef ev_watcher_list *WL;
225	typedef ev_watcher_time *WT;	283	typedef ev_watcher_time *WT;
226		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 */
227	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
228		290
229	#ifdef _WIN32	291	#ifdef _WIN32
230	# include "ev_win32.c"	292	# include "ev_win32.c"
231	#endif	293	#endif
232		294
…		…
253	perror (msg);	315	perror (msg);
254	abort ();	316	abort ();
255	}	317	}
256	}	318	}
257		319
258	static void (alloc)(void *ptr, size_t size) = realloc;	320	static void (alloc)(void *ptr, long size);
259		321
260	void	322	void
261	ev_set_allocator (void (cb)(void *ptr, size_t size))	323	ev_set_allocator (void (cb)(void *ptr, long size))
262	{	324	{
263	alloc = cb;	325	alloc = cb;
264	}	326	}
265		327
266	inline_speed void *	328	inline_speed void *
267	ev_realloc (void *ptr, size_t size)	329	ev_realloc (void *ptr, long size)
268	{	330	{
269	ptr = alloc (ptr, size);	331	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
270		332
271	if (!ptr && size)	333	if (!ptr && size)
272	{	334	{
273	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", (long)size);	335	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
274	abort ();	336	abort ();
275	}	337	}
276		338
277	return ptr;	339	return ptr;
278	}	340	}
…		…
295	typedef struct	357	typedef struct
296	{	358	{
297	W w;	359	W w;
298	int events;	360	int events;
299	} ANPENDING;	361	} ANPENDING;
		362
		363	#if EV_USE_INOTIFY
		364	typedef struct
		365	{
		366	WL head;
		367	} ANFS;
		368	#endif
300		369
301	#if EV_MULTIPLICITY	370	#if EV_MULTIPLICITY
302		371
303	struct ev_loop	372	struct ev_loop
304	{	373	{
…		…
361	{	430	{
362	return ev_rt_now;	431	return ev_rt_now;
363	}	432	}
364	#endif	433	#endif
365		434
366	#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	}
367		489
368	#define array_needsize(type,base,cur,cnt,init) \	490	#define array_needsize(type,base,cur,cnt,init) \
369	if (expect_false ((cnt) > cur)) \	491	if (expect_false ((cnt) > (cur))) \
370	{ \	492	{ \
371	int newcnt = cur; \	493	int ocur_ = (cur); \
372	do \	494	(base) = (type *)array_realloc \
373	{ \	495	(sizeof (type), (base), &(cur), (cnt)); \
374	newcnt = array_roundsize (type, newcnt << 1); \	496	init ((base) + (ocur_), (cur) - ocur_); \
375	} \
376	while ((cnt) > newcnt); \
377	\
378	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
379	init (base + cur, newcnt - cur); \
380	cur = newcnt; \
381	}	497	}
382		498
		499	#if 0
383	#define array_slim(type,stem) \	500	#define array_slim(type,stem) \
384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	501	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385	{ \	502	{ \
386	stem ## max = array_roundsize (stem ## cnt >> 1); \	503	stem ## max = array_roundsize (stem ## cnt >> 1); \
387	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	504	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	505	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
389	}	506	}
		507	#endif
390		508
391	#define array_free(stem, idx) \	509	#define array_free(stem, idx) \
392	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;
393		511
394	/*****************************************************************************/	512	/*****************************************************************************/
395		513
396	void noinline	514	void noinline
397	ev_feed_event (EV_P_ void *w, int revents)	515	ev_feed_event (EV_P_ void *w, int revents)
398	{	516	{
399	W w_ = (W)w;	517	W w_ = (W)w;
		518	int pri = ABSPRI (w_);
400		519
401	if (expect_false (w_->pending))	520	if (expect_false (w_->pending))
		521	pendings [pri][w_->pending - 1].events \|= revents;
		522	else
402	{	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_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	527	pendings [pri][w_->pending - 1].events = revents;
404	return;
405	}	528	}
406
407	w_->pending = ++pendingcnt [ABSPRI (w_)];
408	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
409	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
410	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
411	}	529	}
412		530
413	void inline_size	531	void inline_speed
414	queue_events (EV_P_ W *events, int eventcnt, int type)	532	queue_events (EV_P_ W *events, int eventcnt, int type)
415	{	533	{
416	int i;	534	int i;
417		535
418	for (i = 0; i < eventcnt; ++i)	536	for (i = 0; i < eventcnt; ++i)
…		…
450	}	568	}
451		569
452	void	570	void
453	ev_feed_fd_event (EV_P_ int fd, int revents)	571	ev_feed_fd_event (EV_P_ int fd, int revents)
454	{	572	{
		573	if (fd >= 0 && fd < anfdmax)
455	fd_event (EV_A_ fd, revents);	574	fd_event (EV_A_ fd, revents);
456	}	575	}
457		576
458	void inline_size	577	void inline_size
459	fd_reify (EV_P)	578	fd_reify (EV_P)
460	{	579	{
…		…
464	{	583	{
465	int fd = fdchanges [i];	584	int fd = fdchanges [i];
466	ANFD *anfd = anfds + fd;	585	ANFD *anfd = anfds + fd;
467	ev_io *w;	586	ev_io *w;
468		587
469	int events = 0;	588	unsigned char events = 0;
470		589
471	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)
472	events \|= w->events;	591	events \|= (unsigned char)w->events;
473		592
474	#if EV_SELECT_IS_WINSOCKET	593	#if EV_SELECT_IS_WINSOCKET
475	if (events)	594	if (events)
476	{	595	{
477	unsigned long argp;	596	unsigned long argp;
478	anfd->handle = _get_osfhandle (fd);	597	anfd->handle = _get_osfhandle (fd);
479	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));
480	}	599	}
481	#endif	600	#endif
482		601
		602	{
		603	unsigned char o_events = anfd->events;
		604	unsigned char o_reify = anfd->reify;
		605
483	anfd->reify = 0;	606	anfd->reify = 0;
484
485	backend_modify (EV_A_ fd, anfd->events, events);
486	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	}
487	}	612	}
488		613
489	fdchangecnt = 0;	614	fdchangecnt = 0;
490	}	615	}
491		616
492	void inline_size	617	void inline_size
493	fd_change (EV_P_ int fd)	618	fd_change (EV_P_ int fd, int flags)
494	{	619	{
495	if (expect_false (anfds [fd].reify))	620	unsigned char reify = anfds [fd].reify;
496	return;
497
498	anfds [fd].reify = 1;	621	anfds [fd].reify \|= flags;
499		622
		623	if (expect_true (!reify))
		624	{
500	++fdchangecnt;	625	++fdchangecnt;
501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	626	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502	fdchanges [fdchangecnt - 1] = fd;	627	fdchanges [fdchangecnt - 1] = fd;
		628	}
503	}	629	}
504		630
505	void inline_speed	631	void inline_speed
506	fd_kill (EV_P_ int fd)	632	fd_kill (EV_P_ int fd)
507	{	633	{
…		…
554	static void noinline	680	static void noinline
555	fd_rearm_all (EV_P)	681	fd_rearm_all (EV_P)
556	{	682	{
557	int fd;	683	int fd;
558		684
559	/* this should be highly optimised to not do anything but set a flag */
560	for (fd = 0; fd < anfdmax; ++fd)	685	for (fd = 0; fd < anfdmax; ++fd)
561	if (anfds [fd].events)	686	if (anfds [fd].events)
562	{	687	{
563	anfds [fd].events = 0;	688	anfds [fd].events = 0;
564	fd_change (EV_A_ fd);	689	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
565	}	690	}
566	}	691	}
567		692
568	/*****************************************************************************/	693	/*****************************************************************************/
569		694
570	void inline_speed	695	void inline_speed
571	upheap (WT *heap, int k)	696	upheap (WT *heap, int k)
572	{	697	{
573	WT w = heap [k];	698	WT w = heap [k];
574		699
575	while (k && heap [k >> 1]->at > w->at)	700	while (k)
576	{	701	{
		702	int p = (k - 1) >> 1;
		703
		704	if (heap [p]->at <= w->at)
		705	break;
		706
577	heap [k] = heap [k >> 1];	707	heap [k] = heap [p];
578	((W)heap [k])->active = k + 1;	708	((W)heap [k])->active = k + 1;
579	k >>= 1;	709	k = p;
580	}	710	}
581		711
582	heap [k] = w;	712	heap [k] = w;
583	((W)heap [k])->active = k + 1;	713	((W)heap [k])->active = k + 1;
584
585	}	714	}
586		715
587	void inline_speed	716	void inline_speed
588	downheap (WT *heap, int N, int k)	717	downheap (WT *heap, int N, int k)
589	{	718	{
590	WT w = heap [k];	719	WT w = heap [k];
591		720
592	while (k < (N >> 1))	721	for (;;)
593	{	722	{
594	int j = k << 1;	723	int c = (k << 1) + 1;
595		724
596	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	725	if (c >= N)
597	++j;
598
599	if (w->at <= heap [j]->at)
600	break;	726	break;
601		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
602	heap [k] = heap [j];	734	heap [k] = heap [c];
603	((W)heap [k])->active = k + 1;	735	((W)heap [k])->active = k + 1;
		736
604	k = j;	737	k = c;
605	}	738	}
606		739
607	heap [k] = w;	740	heap [k] = w;
608	((W)heap [k])->active = k + 1;	741	((W)heap [k])->active = k + 1;
609	}	742	}
…		…
691	for (signum = signalmax; signum--; )	824	for (signum = signalmax; signum--; )
692	if (signals [signum].gotsig)	825	if (signals [signum].gotsig)
693	ev_feed_signal_event (EV_A_ signum + 1);	826	ev_feed_signal_event (EV_A_ signum + 1);
694	}	827	}
695		828
696	void inline_size	829	void inline_speed
697	fd_intern (int fd)	830	fd_intern (int fd)
698	{	831	{
699	#ifdef _WIN32	832	#ifdef _WIN32
700	int arg = 1;	833	int arg = 1;
701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	834	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
716	ev_unref (EV_A); /* child watcher should not keep loop alive */	849	ev_unref (EV_A); /* child watcher should not keep loop alive */
717	}	850	}
718		851
719	/*****************************************************************************/	852	/*****************************************************************************/
720		853
721	static ev_child *childs [EV_PID_HASHSIZE];	854	static WL childs [EV_PID_HASHSIZE];
722		855
723	#ifndef _WIN32	856	#ifndef _WIN32
724		857
725	static ev_signal childev;	858	static ev_signal childev;
726		859
…		…
730	ev_child *w;	863	ev_child *w;
731		864
732	for (w = (ev_child )childs [chain & (EV_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)
733	if (w->pid == pid \|\| !w->pid)	866	if (w->pid == pid \|\| !w->pid)
734	{	867	{
735	ev_priority (w) = ev_priority (sw); /* need to do it now */	868	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
736	w->rpid = pid;	869	w->rpid = pid;
737	w->rstatus = status;	870	w->rstatus = status;
738	ev_feed_event (EV_A_ (W)w, EV_CHILD);	871	ev_feed_event (EV_A_ (W)w, EV_CHILD);
739	}	872	}
740	}	873	}
741		874
742	#ifndef WCONTINUED	875	#ifndef WCONTINUED
…		…
841	}	974	}
842		975
843	unsigned int	976	unsigned int
844	ev_embeddable_backends (void)	977	ev_embeddable_backends (void)
845	{	978	{
846	return EVBACKEND_EPOLL	979	int flags = EVBACKEND_EPOLL \| EVBACKEND_KQUEUE \| EVBACKEND_PORT;
847	\| EVBACKEND_KQUEUE	980
848	\| 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;
849	}	986	}
850		987
851	unsigned int	988	unsigned int
852	ev_backend (EV_P)	989	ev_backend (EV_P)
853	{	990	{
854	return backend;	991	return backend;
855	}	992	}
856		993
857	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
858	loop_init (EV_P_ unsigned int flags)	1013	loop_init (EV_P_ unsigned int flags)
859	{	1014	{
860	if (!backend)	1015	if (!backend)
861	{	1016	{
862	#if EV_USE_MONOTONIC	1017	#if EV_USE_MONOTONIC
…		…
870	ev_rt_now = ev_time ();	1025	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1026	mn_now = get_clock ();
872	now_floor = mn_now;	1027	now_floor = mn_now;
873	rtmn_diff = ev_rt_now - mn_now;	1028	rtmn_diff = ev_rt_now - mn_now;
874		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
875	if (!(flags & EVFLAG_NOENV)	1039	if (!(flags & EVFLAG_NOENV)
876	&& !enable_secure ()	1040	&& !enable_secure ()
877	&& getenv ("LIBEV_FLAGS"))	1041	&& getenv ("LIBEV_FLAGS"))
878	flags = atoi (getenv ("LIBEV_FLAGS"));	1042	flags = atoi (getenv ("LIBEV_FLAGS"));
879		1043
880	if (!(flags & 0x0000ffffUL))	1044	if (!(flags & 0x0000ffffUL))
881	flags \|= ev_recommended_backends ();	1045	flags \|= ev_recommended_backends ();
882		1046
883	backend = 0;	1047	backend = 0;
		1048	backend_fd = -1;
		1049	#if EV_USE_INOTIFY
		1050	fs_fd = -2;
		1051	#endif
		1052
884	#if EV_USE_PORT	1053	#if EV_USE_PORT
885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1054	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886	#endif	1055	#endif
887	#if EV_USE_KQUEUE	1056	#if EV_USE_KQUEUE
888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1057	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
900	ev_init (&sigev, sigcb);	1069	ev_init (&sigev, sigcb);
901	ev_set_priority (&sigev, EV_MAXPRI);	1070	ev_set_priority (&sigev, EV_MAXPRI);
902	}	1071	}
903	}	1072	}
904		1073
905	static void	1074	static void noinline
906	loop_destroy (EV_P)	1075	loop_destroy (EV_P)
907	{	1076	{
908	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);
909		1086
910	#if EV_USE_PORT	1087	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1088	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912	#endif	1089	#endif
913	#if EV_USE_KQUEUE	1090	#if EV_USE_KQUEUE
…		…
922	#if EV_USE_SELECT	1099	#if EV_USE_SELECT
923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1100	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924	#endif	1101	#endif
925		1102
926	for (i = NUMPRI; i--; )	1103	for (i = NUMPRI; i--; )
		1104	{
927	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;
928		1112
929	/* have to use the microsoft-never-gets-it-right macro */	1113	/* have to use the microsoft-never-gets-it-right macro */
930	array_free (fdchange, EMPTY0);	1114	array_free (fdchange, EMPTY);
931	array_free (timer, EMPTY0);	1115	array_free (timer, EMPTY);
932	#if EV_PERIODIC_ENABLE	1116	#if EV_PERIODIC_ENABLE
933	array_free (periodic, EMPTY0);	1117	array_free (periodic, EMPTY);
934	#endif	1118	#endif
		1119	#if EV_FORK_ENABLE
935	array_free (idle, EMPTY0);	1120	array_free (fork, EMPTY);
		1121	#endif
936	array_free (prepare, EMPTY0);	1122	array_free (prepare, EMPTY);
937	array_free (check, EMPTY0);	1123	array_free (check, EMPTY);
938		1124
939	backend = 0;	1125	backend = 0;
940	}	1126	}
941		1127
942	static void	1128	void inline_size infy_fork (EV_P);
		1129
		1130	void inline_size
943	loop_fork (EV_P)	1131	loop_fork (EV_P)
944	{	1132	{
945	#if EV_USE_PORT	1133	#if EV_USE_PORT
946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1134	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947	#endif	1135	#endif
948	#if EV_USE_KQUEUE	1136	#if EV_USE_KQUEUE
949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1137	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950	#endif	1138	#endif
951	#if EV_USE_EPOLL	1139	#if EV_USE_EPOLL
952	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);
953	#endif	1144	#endif
954		1145
955	if (ev_is_active (&sigev))	1146	if (ev_is_active (&sigev))
956	{	1147	{
957	/* default loop */	1148	/* default loop */
…		…
1073	postfork = 1;	1264	postfork = 1;
1074	}	1265	}
1075		1266
1076	/*****************************************************************************/	1267	/*****************************************************************************/
1077		1268
1078	int inline_size	1269	void
1079	any_pending (EV_P)	1270	ev_invoke (EV_P_ void *w, int revents)
1080	{	1271	{
1081	int pri;	1272	EV_CB_INVOKE ((W)w, revents);
1082
1083	for (pri = NUMPRI; pri--; )
1084	if (pendingcnt [pri])
1085	return 1;
1086
1087	return 0;
1088	}	1273	}
1089		1274
1090	void inline_speed	1275	void inline_speed
1091	call_pending (EV_P)	1276	call_pending (EV_P)
1092	{	1277	{
…		…
1097	{	1282	{
1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1283	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099		1284
1100	if (expect_true (p->w))	1285	if (expect_true (p->w))
1101	{	1286	{
1102	assert (("non-pending watcher on pending list", p->w->pending));	1287	/assert (("non-pending watcher on pending list", p->w->pending));/
1103		1288
1104	p->w->pending = 0;	1289	p->w->pending = 0;
1105	EV_CB_INVOKE (p->w, p->events);	1290	EV_CB_INVOKE (p->w, p->events);
1106	}	1291	}
1107	}	1292	}
…		…
1110	void inline_size	1295	void inline_size
1111	timers_reify (EV_P)	1296	timers_reify (EV_P)
1112	{	1297	{
1113	while (timercnt && ((WT)timers [0])->at <= mn_now)	1298	while (timercnt && ((WT)timers [0])->at <= mn_now)
1114	{	1299	{
1115	ev_timer *w = timers [0];	1300	ev_timer w = (ev_timer )timers [0];
1116		1301
1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1302	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1118		1303
1119	/* first reschedule or stop timer */	1304	/* first reschedule or stop timer */
1120	if (w->repeat)	1305	if (w->repeat)
1121	{	1306	{
1122	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.));
1123		1308
1124	((WT)w)->at += w->repeat;	1309	((WT)w)->at += w->repeat;
1125	if (((WT)w)->at < mn_now)	1310	if (((WT)w)->at < mn_now)
1126	((WT)w)->at = mn_now;	1311	((WT)w)->at = mn_now;
1127		1312
1128	downheap ((WT *)timers, timercnt, 0);	1313	downheap (timers, timercnt, 0);
1129	}	1314	}
1130	else	1315	else
1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1316	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132		1317
1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1318	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1138	void inline_size	1323	void inline_size
1139	periodics_reify (EV_P)	1324	periodics_reify (EV_P)
1140	{	1325	{
1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1326	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1142	{	1327	{
1143	ev_periodic *w = periodics [0];	1328	ev_periodic w = (ev_periodic )periodics [0];
1144		1329
1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1330	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1146		1331
1147	/* first reschedule or stop timer */	1332	/* first reschedule or stop timer */
1148	if (w->reschedule_cb)	1333	if (w->reschedule_cb)
1149	{	1334	{
1150	((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);
1151	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));
1152	downheap ((WT *)periodics, periodiccnt, 0);	1337	downheap (periodics, periodiccnt, 0);
1153	}	1338	}
1154	else if (w->interval)	1339	else if (w->interval)
1155	{	1340	{
1156	((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;
1157	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));
1158	downheap ((WT *)periodics, periodiccnt, 0);	1344	downheap (periodics, periodiccnt, 0);
1159	}	1345	}
1160	else	1346	else
1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1347	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162		1348
1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1349	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1170	int i;	1356	int i;
1171		1357
1172	/* adjust periodics after time jump */	1358	/* adjust periodics after time jump */
1173	for (i = 0; i < periodiccnt; ++i)	1359	for (i = 0; i < periodiccnt; ++i)
1174	{	1360	{
1175	ev_periodic *w = periodics [i];	1361	ev_periodic w = (ev_periodic )periodics [i];
1176		1362
1177	if (w->reschedule_cb)	1363	if (w->reschedule_cb)
1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1364	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1179	else if (w->interval)	1365	else if (w->interval)
1180	((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;
1181	}	1367	}
1182		1368
1183	/* now rebuild the heap */	1369	/* now rebuild the heap */
1184	for (i = periodiccnt >> 1; i--; )	1370	for (i = periodiccnt >> 1; i--; )
1185	downheap ((WT *)periodics, periodiccnt, i);	1371	downheap (periodics, periodiccnt, i);
1186	}	1372	}
1187	#endif	1373	#endif
1188		1374
		1375	#if EV_IDLE_ENABLE
1189	int inline_size	1376	void inline_size
1190	time_update_monotonic (EV_P)	1377	idle_reify (EV_P)
1191	{	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
1192	mn_now = get_clock ();	1408	mn_now = get_clock ();
1193		1409
		1410	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1411	/* interpolate in the meantime */
1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1412	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195	{	1413	{
1196	ev_rt_now = rtmn_diff + mn_now;	1414	ev_rt_now = rtmn_diff + mn_now;
1197	return 0;	1415	return;
1198	}	1416	}
1199	else	1417
1200	{
1201	now_floor = mn_now;	1418	now_floor = mn_now;
1202	ev_rt_now = ev_time ();	1419	ev_rt_now = ev_time ();
1203	return 1;
1204	}
1205	}
1206		1420
1207	void inline_size	1421	/* loop a few times, before making important decisions.
1208	time_update (EV_P)	1422	* on the choice of "4": one iteration isn't enough,
1209	{	1423	* in case we get preempted during the calls to
1210	int i;	1424	* ev_time and get_clock. a second call is almost guaranteed
1211		1425	* to succeed in that case, though. and looping a few more times
1212	#if EV_USE_MONOTONIC	1426	* doesn't hurt either as we only do this on time-jumps or
1213	if (expect_true (have_monotonic))	1427	* in the unlikely event of having been preempted here.
1214	{	1428	*/
1215	if (time_update_monotonic (EV_A))	1429	for (i = 4; --i; )
1216	{	1430	{
1217	ev_tstamp odiff = rtmn_diff;
1218
1219	/* loop a few times, before making important decisions.
1220	* on the choice of "4": one iteration isn't enough,
1221	* in case we get preempted during the calls to
1222	* ev_time and get_clock. a second call is almost guarenteed
1223	* to succeed in that case, though. and looping a few more times
1224	* doesn't hurt either as we only do this on time-jumps or
1225	* in the unlikely event of getting preempted here.
1226	*/
1227	for (i = 4; --i; )
1228	{
1229	rtmn_diff = ev_rt_now - mn_now;	1431	rtmn_diff = ev_rt_now - mn_now;
1230		1432
1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1433	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1232	return; /* all is well */	1434	return; /* all is well */
1233		1435
1234	ev_rt_now = ev_time ();	1436	ev_rt_now = ev_time ();
1235	mn_now = get_clock ();	1437	mn_now = get_clock ();
1236	now_floor = mn_now;	1438	now_floor = mn_now;
1237	}	1439	}
1238		1440
1239	# if EV_PERIODIC_ENABLE	1441	# if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1442	periodics_reschedule (EV_A);
1241	# endif	1443	# endif
1242	/* no timer adjustment, as the monotonic clock doesn't jump */	1444	/* no timer adjustment, as the monotonic clock doesn't jump */
1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1445	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244	}
1245	}	1446	}
1246	else	1447	else
1247	#endif	1448	#endif
1248	{	1449	{
1249	ev_rt_now = ev_time ();	1450	ev_rt_now = ev_time ();
1250		1451
1251	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))
1252	{	1453	{
1253	#if EV_PERIODIC_ENABLE	1454	#if EV_PERIODIC_ENABLE
1254	periodics_reschedule (EV_A);	1455	periodics_reschedule (EV_A);
1255	#endif	1456	#endif
1256
1257	/* 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 */
1258	for (i = 0; i < timercnt; ++i)	1458	for (i = 0; i < timercnt; ++i)
1259	((WT)timers [i])->at += ev_rt_now - mn_now;	1459	((WT)timers [i])->at += ev_rt_now - mn_now;
1260	}	1460	}
1261		1461
1262	mn_now = ev_rt_now;	1462	mn_now = ev_rt_now;
…		…
1282	{	1482	{
1283	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1483	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1284	? EVUNLOOP_ONE	1484	? EVUNLOOP_ONE
1285	: EVUNLOOP_CANCEL;	1485	: EVUNLOOP_CANCEL;
1286		1486
1287	while (activecnt)	1487	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1488
		1489	do
1288	{	1490	{
1289	/* we might have forked, so reify kernel state if necessary */	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
1290	#if EV_FORK_ENABLE	1500	#if EV_FORK_ENABLE
		1501	/* we might have forked, so queue fork handlers */
1291	if (expect_false (postfork))	1502	if (expect_false (postfork))
1292	if (forkcnt)	1503	if (forkcnt)
1293	{	1504	{
1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1505	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295	call_pending (EV_A);	1506	call_pending (EV_A);
1296	}	1507	}
1297	#endif	1508	#endif
1298		1509
1299	/* queue check watchers (and execute them) */	1510	/* queue prepare watchers (and execute them) */
1300	if (expect_false (preparecnt))	1511	if (expect_false (preparecnt))
1301	{	1512	{
1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1513	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303	call_pending (EV_A);	1514	call_pending (EV_A);
1304	}	1515	}
1305		1516
		1517	if (expect_false (!activecnt))
		1518	break;
		1519
1306	/* we might have forked, so reify kernel state if necessary */	1520	/* we might have forked, so reify kernel state if necessary */
1307	if (expect_false (postfork))	1521	if (expect_false (postfork))
1308	loop_fork (EV_A);	1522	loop_fork (EV_A);
1309		1523
1310	/* update fd-related kernel structures */	1524	/* update fd-related kernel structures */
1311	fd_reify (EV_A);	1525	fd_reify (EV_A);
1312		1526
1313	/* calculate blocking time */	1527	/* calculate blocking time */
1314	{	1528	{
1315	double block;	1529	ev_tstamp waittime = 0.;
		1530	ev_tstamp sleeptime = 0.;
1316		1531
1317	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1532	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1318	block = 0.; /* do not block at all */
1319	else
1320	{	1533	{
1321	/* update time to cancel out callback processing overhead */	1534	/* update time to cancel out callback processing overhead */
1322	#if EV_USE_MONOTONIC
1323	if (expect_true (have_monotonic))
1324	time_update_monotonic (EV_A);	1535	time_update (EV_A_ 1e100);
1325	else
1326	#endif
1327	{
1328	ev_rt_now = ev_time ();
1329	mn_now = ev_rt_now;
1330	}
1331		1536
1332	block = MAX_BLOCKTIME;	1537	waittime = MAX_BLOCKTIME;
1333		1538
1334	if (timercnt)	1539	if (timercnt)
1335	{	1540	{
1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1541	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1337	if (block > to) block = to;	1542	if (waittime > to) waittime = to;
1338	}	1543	}
1339		1544
1340	#if EV_PERIODIC_ENABLE	1545	#if EV_PERIODIC_ENABLE
1341	if (periodiccnt)	1546	if (periodiccnt)
1342	{	1547	{
1343	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;
1344	if (block > to) block = to;	1549	if (waittime > to) waittime = to;
1345	}	1550	}
1346	#endif	1551	#endif
1347		1552
1348	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	}
1349	}	1566	}
1350		1567
		1568	++loop_count;
1351	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);
1352	}	1573	}
1353
1354	/* update ev_rt_now, do magic */
1355	time_update (EV_A);
1356		1574
1357	/* queue pending timers and reschedule them */	1575	/* queue pending timers and reschedule them */
1358	timers_reify (EV_A); /* relative timers called last */	1576	timers_reify (EV_A); /* relative timers called last */
1359	#if EV_PERIODIC_ENABLE	1577	#if EV_PERIODIC_ENABLE
1360	periodics_reify (EV_A); /* absolute timers called first */	1578	periodics_reify (EV_A); /* absolute timers called first */
1361	#endif	1579	#endif
1362		1580
		1581	#if EV_IDLE_ENABLE
1363	/* queue idle watchers unless other events are pending */	1582	/* queue idle watchers unless other events are pending */
1364	if (idlecnt && !any_pending (EV_A))	1583	idle_reify (EV_A);
1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1584	#endif
1366		1585
1367	/* queue check watchers, to be executed first */	1586	/* queue check watchers, to be executed first */
1368	if (expect_false (checkcnt))	1587	if (expect_false (checkcnt))
1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1588	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370		1589
1371	call_pending (EV_A);	1590	call_pending (EV_A);
1372		1591
1373	if (expect_false (loop_done))
1374	break;
1375	}	1592	}
		1593	while (expect_true (activecnt && !loop_done));
1376		1594
1377	if (loop_done == EVUNLOOP_ONE)	1595	if (loop_done == EVUNLOOP_ONE)
1378	loop_done = EVUNLOOP_CANCEL;	1596	loop_done = EVUNLOOP_CANCEL;
1379	}	1597	}
1380		1598
…		…
1407	head = &(*head)->next;	1625	head = &(*head)->next;
1408	}	1626	}
1409	}	1627	}
1410		1628
1411	void inline_speed	1629	void inline_speed
1412	ev_clear_pending (EV_P_ W w)	1630	clear_pending (EV_P_ W w)
1413	{	1631	{
1414	if (w->pending)	1632	if (w->pending)
1415	{	1633	{
1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1634	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417	w->pending = 0;	1635	w->pending = 0;
1418	}	1636	}
1419	}	1637	}
1420		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
1421	void inline_speed	1665	void inline_speed
1422	ev_start (EV_P_ W w, int active)	1666	ev_start (EV_P_ W w, int active)
1423	{	1667	{
1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1668	pri_adjust (EV_A_ w);
1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427	w->active = active;	1669	w->active = active;
1428	ev_ref (EV_A);	1670	ev_ref (EV_A);
1429	}	1671	}
1430		1672
1431	void inline_size	1673	void inline_size
…		…
1435	w->active = 0;	1677	w->active = 0;
1436	}	1678	}
1437		1679
1438	/*****************************************************************************/	1680	/*****************************************************************************/
1439		1681
1440	void	1682	void noinline
1441	ev_io_start (EV_P_ ev_io *w)	1683	ev_io_start (EV_P_ ev_io *w)
1442	{	1684	{
1443	int fd = w->fd;	1685	int fd = w->fd;
1444		1686
1445	if (expect_false (ev_is_active (w)))	1687	if (expect_false (ev_is_active (w)))
…		…
1447		1689
1448	assert (("ev_io_start called with negative fd", fd >= 0));	1690	assert (("ev_io_start called with negative fd", fd >= 0));
1449		1691
1450	ev_start (EV_A_ (W)w, 1);	1692	ev_start (EV_A_ (W)w, 1);
1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1693	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1694	wlist_add (&anfds[fd].head, (WL)w);
1453		1695
1454	fd_change (EV_A_ fd);	1696	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1697	w->events &= ~EV_IOFDSET;
1455	}	1698	}
1456		1699
1457	void	1700	void noinline
1458	ev_io_stop (EV_P_ ev_io *w)	1701	ev_io_stop (EV_P_ ev_io *w)
1459	{	1702	{
1460	ev_clear_pending (EV_A_ (W)w);	1703	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1704	if (expect_false (!ev_is_active (w)))
1462	return;	1705	return;
1463		1706
1464	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));
1465		1708
1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1709	wlist_del (&anfds[w->fd].head, (WL)w);
1467	ev_stop (EV_A_ (W)w);	1710	ev_stop (EV_A_ (W)w);
1468		1711
1469	fd_change (EV_A_ w->fd);	1712	fd_change (EV_A_ w->fd, 1);
1470	}	1713	}
1471		1714
1472	void	1715	void noinline
1473	ev_timer_start (EV_P_ ev_timer *w)	1716	ev_timer_start (EV_P_ ev_timer *w)
1474	{	1717	{
1475	if (expect_false (ev_is_active (w)))	1718	if (expect_false (ev_is_active (w)))
1476	return;	1719	return;
1477		1720
1478	((WT)w)->at += mn_now;	1721	((WT)w)->at += mn_now;
1479		1722
1480	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.));
1481		1724
1482	ev_start (EV_A_ (W)w, ++timercnt);	1725	ev_start (EV_A_ (W)w, ++timercnt);
1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1726	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1484	timers [timercnt - 1] = w;	1727	timers [timercnt - 1] = (WT)w;
1485	upheap ((WT *)timers, timercnt - 1);	1728	upheap (timers, timercnt - 1);
1486		1729
1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1730	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1488	}	1731	}
1489		1732
1490	void	1733	void noinline
1491	ev_timer_stop (EV_P_ ev_timer *w)	1734	ev_timer_stop (EV_P_ ev_timer *w)
1492	{	1735	{
1493	ev_clear_pending (EV_A_ (W)w);	1736	clear_pending (EV_A_ (W)w);
1494	if (expect_false (!ev_is_active (w)))	1737	if (expect_false (!ev_is_active (w)))
1495	return;	1738	return;
1496		1739
1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1740	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1498		1741
		1742	{
		1743	int active = ((W)w)->active;
		1744
1499	if (expect_true (((W)w)->active < timercnt--))	1745	if (expect_true (--active < --timercnt))
1500	{	1746	{
1501	timers [((W)w)->active - 1] = timers [timercnt];	1747	timers [active] = timers [timercnt];
1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1748	adjustheap (timers, timercnt, active);
1503	}	1749	}
		1750	}
1504		1751
1505	((WT)w)->at -= mn_now;	1752	((WT)w)->at -= mn_now;
1506		1753
1507	ev_stop (EV_A_ (W)w);	1754	ev_stop (EV_A_ (W)w);
1508	}	1755	}
1509		1756
1510	void	1757	void noinline
1511	ev_timer_again (EV_P_ ev_timer *w)	1758	ev_timer_again (EV_P_ ev_timer *w)
1512	{	1759	{
1513	if (ev_is_active (w))	1760	if (ev_is_active (w))
1514	{	1761	{
1515	if (w->repeat)	1762	if (w->repeat)
1516	{	1763	{
1517	((WT)w)->at = mn_now + w->repeat;	1764	((WT)w)->at = mn_now + w->repeat;
1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1765	adjustheap (timers, timercnt, ((W)w)->active - 1);
1519	}	1766	}
1520	else	1767	else
1521	ev_timer_stop (EV_A_ w);	1768	ev_timer_stop (EV_A_ w);
1522	}	1769	}
1523	else if (w->repeat)	1770	else if (w->repeat)
…		…
1526	ev_timer_start (EV_A_ w);	1773	ev_timer_start (EV_A_ w);
1527	}	1774	}
1528	}	1775	}
1529		1776
1530	#if EV_PERIODIC_ENABLE	1777	#if EV_PERIODIC_ENABLE
1531	void	1778	void noinline
1532	ev_periodic_start (EV_P_ ev_periodic *w)	1779	ev_periodic_start (EV_P_ ev_periodic *w)
1533	{	1780	{
1534	if (expect_false (ev_is_active (w)))	1781	if (expect_false (ev_is_active (w)))
1535	return;	1782	return;
1536		1783
…		…
1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1785	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1539	else if (w->interval)	1786	else if (w->interval)
1540	{	1787	{
1541	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.));
1542	/* 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 */
1543	((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;
1544	}	1791	}
		1792	else
		1793	((WT)w)->at = w->offset;
1545		1794
1546	ev_start (EV_A_ (W)w, ++periodiccnt);	1795	ev_start (EV_A_ (W)w, ++periodiccnt);
1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1796	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1548	periodics [periodiccnt - 1] = w;	1797	periodics [periodiccnt - 1] = (WT)w;
1549	upheap ((WT *)periodics, periodiccnt - 1);	1798	upheap (periodics, periodiccnt - 1);
1550		1799
1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1800	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1552	}	1801	}
1553		1802
1554	void	1803	void noinline
1555	ev_periodic_stop (EV_P_ ev_periodic *w)	1804	ev_periodic_stop (EV_P_ ev_periodic *w)
1556	{	1805	{
1557	ev_clear_pending (EV_A_ (W)w);	1806	clear_pending (EV_A_ (W)w);
1558	if (expect_false (!ev_is_active (w)))	1807	if (expect_false (!ev_is_active (w)))
1559	return;	1808	return;
1560		1809
1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1810	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1562		1811
		1812	{
		1813	int active = ((W)w)->active;
		1814
1563	if (expect_true (((W)w)->active < periodiccnt--))	1815	if (expect_true (--active < --periodiccnt))
1564	{	1816	{
1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1817	periodics [active] = periodics [periodiccnt];
1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1818	adjustheap (periodics, periodiccnt, active);
1567	}	1819	}
		1820	}
1568		1821
1569	ev_stop (EV_A_ (W)w);	1822	ev_stop (EV_A_ (W)w);
1570	}	1823	}
1571		1824
1572	void	1825	void noinline
1573	ev_periodic_again (EV_P_ ev_periodic *w)	1826	ev_periodic_again (EV_P_ ev_periodic *w)
1574	{	1827	{
1575	/* TODO: use adjustheap and recalculation */	1828	/* TODO: use adjustheap and recalculation */
1576	ev_periodic_stop (EV_A_ w);	1829	ev_periodic_stop (EV_A_ w);
1577	ev_periodic_start (EV_A_ w);	1830	ev_periodic_start (EV_A_ w);
…		…
1580		1833
1581	#ifndef SA_RESTART	1834	#ifndef SA_RESTART
1582	# define SA_RESTART 0	1835	# define SA_RESTART 0
1583	#endif	1836	#endif
1584		1837
1585	void	1838	void noinline
1586	ev_signal_start (EV_P_ ev_signal *w)	1839	ev_signal_start (EV_P_ ev_signal *w)
1587	{	1840	{
1588	#if EV_MULTIPLICITY	1841	#if EV_MULTIPLICITY
1589	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));
1590	#endif	1843	#endif
1591	if (expect_false (ev_is_active (w)))	1844	if (expect_false (ev_is_active (w)))
1592	return;	1845	return;
1593		1846
1594	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));
1595		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
1596	ev_start (EV_A_ (W)w, 1);	1863	ev_start (EV_A_ (W)w, 1);
1597	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1598	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1864	wlist_add (&signals [w->signum - 1].head, (WL)w);
1599		1865
1600	if (!((WL)w)->next)	1866	if (!((WL)w)->next)
1601	{	1867	{
1602	#if _WIN32	1868	#if _WIN32
1603	signal (w->signum, sighandler);	1869	signal (w->signum, sighandler);
…		…
1609	sigaction (w->signum, &sa, 0);	1875	sigaction (w->signum, &sa, 0);
1610	#endif	1876	#endif
1611	}	1877	}
1612	}	1878	}
1613		1879
1614	void	1880	void noinline
1615	ev_signal_stop (EV_P_ ev_signal *w)	1881	ev_signal_stop (EV_P_ ev_signal *w)
1616	{	1882	{
1617	ev_clear_pending (EV_A_ (W)w);	1883	clear_pending (EV_A_ (W)w);
1618	if (expect_false (!ev_is_active (w)))	1884	if (expect_false (!ev_is_active (w)))
1619	return;	1885	return;
1620		1886
1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1887	wlist_del (&signals [w->signum - 1].head, (WL)w);
1622	ev_stop (EV_A_ (W)w);	1888	ev_stop (EV_A_ (W)w);
1623		1889
1624	if (!signals [w->signum - 1].head)	1890	if (!signals [w->signum - 1].head)
1625	signal (w->signum, SIG_DFL);	1891	signal (w->signum, SIG_DFL);
1626	}	1892	}
…		…
1633	#endif	1899	#endif
1634	if (expect_false (ev_is_active (w)))	1900	if (expect_false (ev_is_active (w)))
1635	return;	1901	return;
1636		1902
1637	ev_start (EV_A_ (W)w, 1);	1903	ev_start (EV_A_ (W)w, 1);
1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1904	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1639	}	1905	}
1640		1906
1641	void	1907	void
1642	ev_child_stop (EV_P_ ev_child *w)	1908	ev_child_stop (EV_P_ ev_child *w)
1643	{	1909	{
1644	ev_clear_pending (EV_A_ (W)w);	1910	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1911	if (expect_false (!ev_is_active (w)))
1646	return;	1912	return;
1647		1913
1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1914	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649	ev_stop (EV_A_ (W)w);	1915	ev_stop (EV_A_ (W)w);
1650	}	1916	}
1651		1917
1652	#if EV_STAT_ENABLE	1918	#if EV_STAT_ENABLE
1653		1919
…		…
1657	# endif	1923	# endif
1658		1924
1659	#define DEF_STAT_INTERVAL 5.0074891	1925	#define DEF_STAT_INTERVAL 5.0074891
1660	#define MIN_STAT_INTERVAL 0.1074891	1926	#define MIN_STAT_INTERVAL 0.1074891
1661		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
		1933	static void noinline
		1934	infy_add (EV_P_ ev_stat *w)
		1935	{
		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	}
		2016	}
		2017
		2018	static void
		2019	infy_cb (EV_P_ ev_io *w, int revents)
		2020	{
		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));
		2025
		2026	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2027	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2028	}
		2029
		2030	void inline_size
		2031	infy_init (EV_P)
		2032	{
		2033	if (fs_fd != -2)
		2034	return;
		2035
		2036	fs_fd = inotify_init ();
		2037
		2038	if (fs_fd >= 0)
		2039	{
		2040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2041	ev_set_priority (&fs_w, EV_MAXPRI);
		2042	ev_io_start (EV_A_ &fs_w);
		2043	}
		2044	}
		2045
		2046	void inline_size
		2047	infy_fork (EV_P)
		2048	{
		2049	int slot;
		2050
		2051	if (fs_fd < 0)
		2052	return;
		2053
		2054	close (fs_fd);
		2055	fs_fd = inotify_init ();
		2056
		2057	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2058	{
		2059	WL w_ = fs_hash [slot].head;
		2060	fs_hash [slot].head = 0;
		2061
		2062	while (w_)
		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
		2078	#endif
		2079
1662	void	2080	void
1663	ev_stat_stat (EV_P_ ev_stat *w)	2081	ev_stat_stat (EV_P_ ev_stat *w)
1664	{	2082	{
1665	if (lstat (w->path, &w->attr) < 0)	2083	if (lstat (w->path, &w->attr) < 0)
1666	w->attr.st_nlink = 0;	2084	w->attr.st_nlink = 0;
1667	else if (!w->attr.st_nlink)	2085	else if (!w->attr.st_nlink)
1668	w->attr.st_nlink = 1;	2086	w->attr.st_nlink = 1;
1669	}	2087	}
1670		2088
1671	static void	2089	static void noinline
1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2090	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673	{	2091	{
1674	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2092	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1675		2093
1676	/* we copy this here each the time so that */	2094	/* we copy this here each the time so that */
1677	/* prev has the old value when the callback gets invoked */	2095	/* prev has the old value when the callback gets invoked */
1678	w->prev = w->attr;	2096	w->prev = w->attr;
1679	ev_stat_stat (EV_A_ w);	2097	ev_stat_stat (EV_A_ w);
1680		2098
1681	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
1682	ev_feed_event (EV_A_ w, EV_STAT);	2119	ev_feed_event (EV_A_ w, EV_STAT);
		2120	}
1683	}	2121	}
1684		2122
1685	void	2123	void
1686	ev_stat_start (EV_P_ ev_stat *w)	2124	ev_stat_start (EV_P_ ev_stat *w)
1687	{	2125	{
…		…
1697	if (w->interval < MIN_STAT_INTERVAL)	2135	if (w->interval < MIN_STAT_INTERVAL)
1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2136	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699		2137
1700	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);
1701	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
1702	ev_timer_start (EV_A_ &w->timer);	2148	ev_timer_start (EV_A_ &w->timer);
1703		2149
1704	ev_start (EV_A_ (W)w, 1);	2150	ev_start (EV_A_ (W)w, 1);
1705	}	2151	}
1706		2152
1707	void	2153	void
1708	ev_stat_stop (EV_P_ ev_stat *w)	2154	ev_stat_stop (EV_P_ ev_stat *w)
1709	{	2155	{
1710	ev_clear_pending (EV_A_ (W)w);	2156	clear_pending (EV_A_ (W)w);
1711	if (expect_false (!ev_is_active (w)))	2157	if (expect_false (!ev_is_active (w)))
1712	return;	2158	return;
1713		2159
		2160	#if EV_USE_INOTIFY
		2161	infy_del (EV_A_ w);
		2162	#endif
1714	ev_timer_stop (EV_A_ &w->timer);	2163	ev_timer_stop (EV_A_ &w->timer);
1715		2164
1716	ev_stop (EV_A_ (W)w);	2165	ev_stop (EV_A_ (W)w);
1717	}	2166	}
1718	#endif	2167	#endif
1719		2168
		2169	#if EV_IDLE_ENABLE
1720	void	2170	void
1721	ev_idle_start (EV_P_ ev_idle *w)	2171	ev_idle_start (EV_P_ ev_idle *w)
1722	{	2172	{
1723	if (expect_false (ev_is_active (w)))	2173	if (expect_false (ev_is_active (w)))
1724	return;	2174	return;
1725		2175
		2176	pri_adjust (EV_A_ (W)w);
		2177
		2178	{
		2179	int active = ++idlecnt [ABSPRI (w)];
		2180
		2181	++idleall;
1726	ev_start (EV_A_ (W)w, ++idlecnt);	2182	ev_start (EV_A_ (W)w, active);
		2183
1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2184	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728	idles [idlecnt - 1] = w;	2185	idles [ABSPRI (w)][active - 1] = w;
		2186	}
1729	}	2187	}
1730		2188
1731	void	2189	void
1732	ev_idle_stop (EV_P_ ev_idle *w)	2190	ev_idle_stop (EV_P_ ev_idle *w)
1733	{	2191	{
1734	ev_clear_pending (EV_A_ (W)w);	2192	clear_pending (EV_A_ (W)w);
1735	if (expect_false (!ev_is_active (w)))	2193	if (expect_false (!ev_is_active (w)))
1736	return;	2194	return;
1737		2195
1738	{	2196	{
1739	int active = ((W)w)->active;	2197	int active = ((W)w)->active;
1740	idles [active - 1] = idles [--idlecnt];	2198
		2199	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1741	((W)idles [active - 1])->active = active;	2200	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2201
		2202	ev_stop (EV_A_ (W)w);
		2203	--idleall;
1742	}	2204	}
1743
1744	ev_stop (EV_A_ (W)w);
1745	}	2205	}
		2206	#endif
1746		2207
1747	void	2208	void
1748	ev_prepare_start (EV_P_ ev_prepare *w)	2209	ev_prepare_start (EV_P_ ev_prepare *w)
1749	{	2210	{
1750	if (expect_false (ev_is_active (w)))	2211	if (expect_false (ev_is_active (w)))
…		…
1756	}	2217	}
1757		2218
1758	void	2219	void
1759	ev_prepare_stop (EV_P_ ev_prepare *w)	2220	ev_prepare_stop (EV_P_ ev_prepare *w)
1760	{	2221	{
1761	ev_clear_pending (EV_A_ (W)w);	2222	clear_pending (EV_A_ (W)w);
1762	if (expect_false (!ev_is_active (w)))	2223	if (expect_false (!ev_is_active (w)))
1763	return;	2224	return;
1764		2225
1765	{	2226	{
1766	int active = ((W)w)->active;	2227	int active = ((W)w)->active;
…		…
1783	}	2244	}
1784		2245
1785	void	2246	void
1786	ev_check_stop (EV_P_ ev_check *w)	2247	ev_check_stop (EV_P_ ev_check *w)
1787	{	2248	{
1788	ev_clear_pending (EV_A_ (W)w);	2249	clear_pending (EV_A_ (W)w);
1789	if (expect_false (!ev_is_active (w)))	2250	if (expect_false (!ev_is_active (w)))
1790	return;	2251	return;
1791		2252
1792	{	2253	{
1793	int active = ((W)w)->active;	2254	int active = ((W)w)->active;
…		…
1800		2261
1801	#if EV_EMBED_ENABLE	2262	#if EV_EMBED_ENABLE
1802	void noinline	2263	void noinline
1803	ev_embed_sweep (EV_P_ ev_embed *w)	2264	ev_embed_sweep (EV_P_ ev_embed *w)
1804	{	2265	{
1805	ev_loop (w->loop, EVLOOP_NONBLOCK);	2266	ev_loop (w->other, EVLOOP_NONBLOCK);
1806	}	2267	}
1807		2268
1808	static void	2269	static void
1809	embed_cb (EV_P_ ev_io *io, int revents)	2270	embed_io_cb (EV_P_ ev_io *io, int revents)
1810	{	2271	{
1811	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2272	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
1812		2273
1813	if (ev_cb (w))	2274	if (ev_cb (w))
1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2275	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815	else	2276	else
1816	ev_embed_sweep (loop, w);	2277	ev_loop (w->other, EVLOOP_NONBLOCK);
1817	}	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
1818		2303
1819	void	2304	void
1820	ev_embed_start (EV_P_ ev_embed *w)	2305	ev_embed_start (EV_P_ ev_embed *w)
1821	{	2306	{
1822	if (expect_false (ev_is_active (w)))	2307	if (expect_false (ev_is_active (w)))
1823	return;	2308	return;
1824		2309
1825	{	2310	{
1826	struct ev_loop *loop = w->loop;	2311	struct ev_loop *loop = w->other;
1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2312	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2313	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829	}	2314	}
1830		2315
1831	ev_set_priority (&w->io, ev_priority (w));	2316	ev_set_priority (&w->io, ev_priority (w));
1832	ev_io_start (EV_A_ &w->io);	2317	ev_io_start (EV_A_ &w->io);
1833		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
1834	ev_start (EV_A_ (W)w, 1);	2325	ev_start (EV_A_ (W)w, 1);
1835	}	2326	}
1836		2327
1837	void	2328	void
1838	ev_embed_stop (EV_P_ ev_embed *w)	2329	ev_embed_stop (EV_P_ ev_embed *w)
1839	{	2330	{
1840	ev_clear_pending (EV_A_ (W)w);	2331	clear_pending (EV_A_ (W)w);
1841	if (expect_false (!ev_is_active (w)))	2332	if (expect_false (!ev_is_active (w)))
1842	return;	2333	return;
1843		2334
1844	ev_io_stop (EV_A_ &w->io);	2335	ev_io_stop (EV_A_ &w->io);
		2336	ev_prepare_stop (EV_A_ &w->prepare);
1845		2337
1846	ev_stop (EV_A_ (W)w);	2338	ev_stop (EV_A_ (W)w);
1847	}	2339	}
1848	#endif	2340	#endif
1849		2341
…		…
1860	}	2352	}
1861		2353
1862	void	2354	void
1863	ev_fork_stop (EV_P_ ev_fork *w)	2355	ev_fork_stop (EV_P_ ev_fork *w)
1864	{	2356	{
1865	ev_clear_pending (EV_A_ (W)w);	2357	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2358	if (expect_false (!ev_is_active (w)))
1867	return;	2359	return;
1868		2360
1869	{	2361	{
1870	int active = ((W)w)->active;	2362	int active = ((W)w)->active;
…		…
1938	ev_timer_set (&once->to, timeout, 0.);	2430	ev_timer_set (&once->to, timeout, 0.);
1939	ev_timer_start (EV_A_ &once->to);	2431	ev_timer_start (EV_A_ &once->to);
1940	}	2432	}
1941	}	2433	}
1942		2434
		2435	#if EV_MULTIPLICITY
		2436	#include "ev_wrap.h"
		2437	#endif
		2438
1943	#ifdef __cplusplus	2439	#ifdef __cplusplus
1944	}	2440	}
1945	#endif	2441	#endif
1946		2442

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Comparing libev/ev.c (file contents): Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC vs. Revision 1.198 by root, Sun Dec 23 04:45:51 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.150 by root, Tue Nov 27 19:41:52 2007 UTC vs.
Revision 1.198 by root, Sun Dec 23 04:45:51 2007 UTC