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

Comparing libev/ev.c (file contents):
Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs.
Revision 1.195 by root, Sat Dec 22 11:44:51 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	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		286	/* giving it a reasonably high chance of working on typical architetcures */
227	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	287	static sig_atomic_t have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
228		288
229	#ifdef _WIN32	289	#ifdef _WIN32
230	# include "ev_win32.c"	290	# include "ev_win32.c"
231	#endif	291	#endif
232		292
…		…
261	ev_set_allocator (void (cb)(void *ptr, long size))	321	ev_set_allocator (void (cb)(void *ptr, long size))
262	{	322	{
263	alloc = cb;	323	alloc = cb;
264	}	324	}
265		325
266	static void *	326	inline_speed void *
267	ev_realloc (void *ptr, long size)	327	ev_realloc (void *ptr, long size)
268	{	328	{
269	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	329	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
270		330
271	if (!ptr && size)	331	if (!ptr && size)
…		…
295	typedef struct	355	typedef struct
296	{	356	{
297	W w;	357	W w;
298	int events;	358	int events;
299	} ANPENDING;	359	} ANPENDING;
		360
		361	#if EV_USE_INOTIFY
		362	typedef struct
		363	{
		364	WL head;
		365	} ANFS;
		366	#endif
300		367
301	#if EV_MULTIPLICITY	368	#if EV_MULTIPLICITY
302		369
303	struct ev_loop	370	struct ev_loop
304	{	371	{
…		…
361	{	428	{
362	return ev_rt_now;	429	return ev_rt_now;
363	}	430	}
364	#endif	431	#endif
365		432
366	#define array_roundsize(type,n) (((n) \| 4) & ~3)	433	void
		434	ev_sleep (ev_tstamp delay)
		435	{
		436	if (delay > 0.)
		437	{
		438	#if EV_USE_NANOSLEEP
		439	struct timespec ts;
		440
		441	ts.tv_sec = (time_t)delay;
		442	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		443
		444	nanosleep (&ts, 0);
		445	#elif defined(_WIN32)
		446	Sleep (delay * 1e3);
		447	#else
		448	struct timeval tv;
		449
		450	tv.tv_sec = (time_t)delay;
		451	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		452
		453	select (0, 0, 0, 0, &tv);
		454	#endif
		455	}
		456	}
		457
		458	/*****************************************************************************/
		459
		460	int inline_size
		461	array_nextsize (int elem, int cur, int cnt)
		462	{
		463	int ncur = cur + 1;
		464
		465	do
		466	ncur <<= 1;
		467	while (cnt > ncur);
		468
		469	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		470	if (elem * ncur > 4096)
		471	{
		472	ncur *= elem;
		473	ncur = (ncur + elem + 4095 + sizeof (void ) 4) & ~4095;
		474	ncur = ncur - sizeof (void ) 4;
		475	ncur /= elem;
		476	}
		477
		478	return ncur;
		479	}
		480
		481	static noinline void *
		482	array_realloc (int elem, void base, int cur, int cnt)
		483	{
		484	cur = array_nextsize (elem, cur, cnt);
		485	return ev_realloc (base, elem * *cur);
		486	}
367		487
368	#define array_needsize(type,base,cur,cnt,init) \	488	#define array_needsize(type,base,cur,cnt,init) \
369	if (expect_false ((cnt) > cur)) \	489	if (expect_false ((cnt) > (cur))) \
370	{ \	490	{ \
371	int newcnt = cur; \	491	int ocur_ = (cur); \
372	do \	492	(base) = (type *)array_realloc \
373	{ \	493	(sizeof (type), (base), &(cur), (cnt)); \
374	newcnt = array_roundsize (type, newcnt << 1); \	494	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	}	495	}
382		496
		497	#if 0
383	#define array_slim(type,stem) \	498	#define array_slim(type,stem) \
384	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	499	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
385	{ \	500	{ \
386	stem ## max = array_roundsize (stem ## cnt >> 1); \	501	stem ## max = array_roundsize (stem ## cnt >> 1); \
387	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\	502	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
388	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	503	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
389	}	504	}
		505	#endif
390		506
391	#define array_free(stem, idx) \	507	#define array_free(stem, idx) \
392	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	508	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
393		509
394	/*****************************************************************************/	510	/*****************************************************************************/
395		511
396	void noinline	512	void noinline
397	ev_feed_event (EV_P_ void *w, int revents)	513	ev_feed_event (EV_P_ void *w, int revents)
398	{	514	{
399	W w_ = (W)w;	515	W w_ = (W)w;
		516	int pri = ABSPRI (w_);
400		517
401	if (expect_false (w_->pending))	518	if (expect_false (w_->pending))
		519	pendings [pri][w_->pending - 1].events \|= revents;
		520	else
402	{	521	{
		522	w_->pending = ++pendingcnt [pri];
		523	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		524	pendings [pri][w_->pending - 1].w = w_;
403	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;	525	pendings [pri][w_->pending - 1].events = revents;
404	return;
405	}	526	}
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	}	527	}
412		528
413	void inline_size	529	void inline_speed
414	queue_events (EV_P_ W *events, int eventcnt, int type)	530	queue_events (EV_P_ W *events, int eventcnt, int type)
415	{	531	{
416	int i;	532	int i;
417		533
418	for (i = 0; i < eventcnt; ++i)	534	for (i = 0; i < eventcnt; ++i)
…		…
450	}	566	}
451		567
452	void	568	void
453	ev_feed_fd_event (EV_P_ int fd, int revents)	569	ev_feed_fd_event (EV_P_ int fd, int revents)
454	{	570	{
		571	if (fd >= 0 && fd < anfdmax)
455	fd_event (EV_A_ fd, revents);	572	fd_event (EV_A_ fd, revents);
456	}	573	}
457		574
458	void inline_size	575	void inline_size
459	fd_reify (EV_P)	576	fd_reify (EV_P)
460	{	577	{
…		…
464	{	581	{
465	int fd = fdchanges [i];	582	int fd = fdchanges [i];
466	ANFD *anfd = anfds + fd;	583	ANFD *anfd = anfds + fd;
467	ev_io *w;	584	ev_io *w;
468		585
469	int events = 0;	586	unsigned char events = 0;
470		587
471	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	588	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
472	events \|= w->events;	589	events \|= (unsigned char)w->events;
473		590
474	#if EV_SELECT_IS_WINSOCKET	591	#if EV_SELECT_IS_WINSOCKET
475	if (events)	592	if (events)
476	{	593	{
477	unsigned long argp;	594	unsigned long argp;
478	anfd->handle = _get_osfhandle (fd);	595	anfd->handle = _get_osfhandle (fd);
479	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	596	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
480	}	597	}
481	#endif	598	#endif
482		599
		600	{
		601	unsigned char o_events = anfd->events;
		602	unsigned char o_reify = anfd->reify;
		603
483	anfd->reify = 0;	604	anfd->reify = 0;
484
485	backend_modify (EV_A_ fd, anfd->events, events);
486	anfd->events = events;	605	anfd->events = events;
		606
		607	if (o_events != events \|\| o_reify & EV_IOFDSET)
		608	backend_modify (EV_A_ fd, o_events, events);
		609	}
487	}	610	}
488		611
489	fdchangecnt = 0;	612	fdchangecnt = 0;
490	}	613	}
491		614
492	void inline_size	615	void inline_size
493	fd_change (EV_P_ int fd)	616	fd_change (EV_P_ int fd, int flags)
494	{	617	{
495	if (expect_false (anfds [fd].reify))	618	unsigned char reify = anfds [fd].reify;
496	return;
497
498	anfds [fd].reify = 1;	619	anfds [fd].reify \|= flags;
499		620
		621	if (expect_true (!reify))
		622	{
500	++fdchangecnt;	623	++fdchangecnt;
501	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	624	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
502	fdchanges [fdchangecnt - 1] = fd;	625	fdchanges [fdchangecnt - 1] = fd;
		626	}
503	}	627	}
504		628
505	void inline_speed	629	void inline_speed
506	fd_kill (EV_P_ int fd)	630	fd_kill (EV_P_ int fd)
507	{	631	{
…		…
554	static void noinline	678	static void noinline
555	fd_rearm_all (EV_P)	679	fd_rearm_all (EV_P)
556	{	680	{
557	int fd;	681	int fd;
558		682
559	/* this should be highly optimised to not do anything but set a flag */
560	for (fd = 0; fd < anfdmax; ++fd)	683	for (fd = 0; fd < anfdmax; ++fd)
561	if (anfds [fd].events)	684	if (anfds [fd].events)
562	{	685	{
563	anfds [fd].events = 0;	686	anfds [fd].events = 0;
564	fd_change (EV_A_ fd);	687	fd_change (EV_A_ fd, EV_IOFDSET \| 1);
565	}	688	}
566	}	689	}
567		690
568	/*****************************************************************************/	691	/*****************************************************************************/
569		692
570	void inline_speed	693	void inline_speed
571	upheap (WT *heap, int k)	694	upheap (WT *heap, int k)
572	{	695	{
573	WT w = heap [k];	696	WT w = heap [k];
574		697
575	while (k && heap [k >> 1]->at > w->at)	698	while (k)
576	{	699	{
		700	int p = (k - 1) >> 1;
		701
		702	if (heap [p]->at <= w->at)
		703	break;
		704
577	heap [k] = heap [k >> 1];	705	heap [k] = heap [p];
578	((W)heap [k])->active = k + 1;	706	((W)heap [k])->active = k + 1;
579	k >>= 1;	707	k = p;
580	}	708	}
581		709
582	heap [k] = w;	710	heap [k] = w;
583	((W)heap [k])->active = k + 1;	711	((W)heap [k])->active = k + 1;
584
585	}	712	}
586		713
587	void inline_speed	714	void inline_speed
588	downheap (WT *heap, int N, int k)	715	downheap (WT *heap, int N, int k)
589	{	716	{
590	WT w = heap [k];	717	WT w = heap [k];
591		718
592	while (k < (N >> 1))	719	for (;;)
593	{	720	{
594	int j = k << 1;	721	int c = (k << 1) + 1;
595		722
596	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	723	if (c >= N)
597	++j;
598
599	if (w->at <= heap [j]->at)
600	break;	724	break;
601		725
		726	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		727	? 1 : 0;
		728
		729	if (w->at <= heap [c]->at)
		730	break;
		731
602	heap [k] = heap [j];	732	heap [k] = heap [c];
603	((W)heap [k])->active = k + 1;	733	((W)heap [k])->active = k + 1;
		734
604	k = j;	735	k = c;
605	}	736	}
606		737
607	heap [k] = w;	738	heap [k] = w;
608	((W)heap [k])->active = k + 1;	739	((W)heap [k])->active = k + 1;
609	}	740	}
…		…
691	for (signum = signalmax; signum--; )	822	for (signum = signalmax; signum--; )
692	if (signals [signum].gotsig)	823	if (signals [signum].gotsig)
693	ev_feed_signal_event (EV_A_ signum + 1);	824	ev_feed_signal_event (EV_A_ signum + 1);
694	}	825	}
695		826
696	void inline_size	827	void inline_speed
697	fd_intern (int fd)	828	fd_intern (int fd)
698	{	829	{
699	#ifdef _WIN32	830	#ifdef _WIN32
700	int arg = 1;	831	int arg = 1;
701	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	832	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
716	ev_unref (EV_A); /* child watcher should not keep loop alive */	847	ev_unref (EV_A); /* child watcher should not keep loop alive */
717	}	848	}
718		849
719	/*****************************************************************************/	850	/*****************************************************************************/
720		851
721	static ev_child *childs [EV_PID_HASHSIZE];	852	static WL childs [EV_PID_HASHSIZE];
722		853
723	#ifndef _WIN32	854	#ifndef _WIN32
724		855
725	static ev_signal childev;	856	static ev_signal childev;
726		857
…		…
730	ev_child *w;	861	ev_child *w;
731		862
732	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	863	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)
733	if (w->pid == pid \|\| !w->pid)	864	if (w->pid == pid \|\| !w->pid)
734	{	865	{
735	ev_priority (w) = ev_priority (sw); /* need to do it now */	866	ev_set_priority (w, ev_priority (sw)); /* need to do it now */
736	w->rpid = pid;	867	w->rpid = pid;
737	w->rstatus = status;	868	w->rstatus = status;
738	ev_feed_event (EV_A_ (W)w, EV_CHILD);	869	ev_feed_event (EV_A_ (W)w, EV_CHILD);
739	}	870	}
740	}	871	}
741		872
742	#ifndef WCONTINUED	873	#ifndef WCONTINUED
…		…
841	}	972	}
842		973
843	unsigned int	974	unsigned int
844	ev_embeddable_backends (void)	975	ev_embeddable_backends (void)
845	{	976	{
		977	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
846	return EVBACKEND_EPOLL	978	return EVBACKEND_KQUEUE
847	\| EVBACKEND_KQUEUE
848	\| EVBACKEND_PORT;	979	\| EVBACKEND_PORT;
849	}	980	}
850		981
851	unsigned int	982	unsigned int
852	ev_backend (EV_P)	983	ev_backend (EV_P)
853	{	984	{
854	return backend;	985	return backend;
855	}	986	}
856		987
857	static void	988	unsigned int
		989	ev_loop_count (EV_P)
		990	{
		991	return loop_count;
		992	}
		993
		994	void
		995	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		996	{
		997	io_blocktime = interval;
		998	}
		999
		1000	void
		1001	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1002	{
		1003	timeout_blocktime = interval;
		1004	}
		1005
		1006	static void noinline
858	loop_init (EV_P_ unsigned int flags)	1007	loop_init (EV_P_ unsigned int flags)
859	{	1008	{
860	if (!backend)	1009	if (!backend)
861	{	1010	{
862	#if EV_USE_MONOTONIC	1011	#if EV_USE_MONOTONIC
…		…
870	ev_rt_now = ev_time ();	1019	ev_rt_now = ev_time ();
871	mn_now = get_clock ();	1020	mn_now = get_clock ();
872	now_floor = mn_now;	1021	now_floor = mn_now;
873	rtmn_diff = ev_rt_now - mn_now;	1022	rtmn_diff = ev_rt_now - mn_now;
874		1023
		1024	io_blocktime = 0.;
		1025	timeout_blocktime = 0.;
		1026
		1027	/* pid check not overridable via env */
		1028	#ifndef _WIN32
		1029	if (flags & EVFLAG_FORKCHECK)
		1030	curpid = getpid ();
		1031	#endif
		1032
875	if (!(flags & EVFLAG_NOENV)	1033	if (!(flags & EVFLAG_NOENV)
876	&& !enable_secure ()	1034	&& !enable_secure ()
877	&& getenv ("LIBEV_FLAGS"))	1035	&& getenv ("LIBEV_FLAGS"))
878	flags = atoi (getenv ("LIBEV_FLAGS"));	1036	flags = atoi (getenv ("LIBEV_FLAGS"));
879		1037
880	if (!(flags & 0x0000ffffUL))	1038	if (!(flags & 0x0000ffffUL))
881	flags \|= ev_recommended_backends ();	1039	flags \|= ev_recommended_backends ();
882		1040
883	backend = 0;	1041	backend = 0;
		1042	backend_fd = -1;
		1043	#if EV_USE_INOTIFY
		1044	fs_fd = -2;
		1045	#endif
		1046
884	#if EV_USE_PORT	1047	#if EV_USE_PORT
885	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1048	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
886	#endif	1049	#endif
887	#if EV_USE_KQUEUE	1050	#if EV_USE_KQUEUE
888	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1051	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
900	ev_init (&sigev, sigcb);	1063	ev_init (&sigev, sigcb);
901	ev_set_priority (&sigev, EV_MAXPRI);	1064	ev_set_priority (&sigev, EV_MAXPRI);
902	}	1065	}
903	}	1066	}
904		1067
905	static void	1068	static void noinline
906	loop_destroy (EV_P)	1069	loop_destroy (EV_P)
907	{	1070	{
908	int i;	1071	int i;
		1072
		1073	#if EV_USE_INOTIFY
		1074	if (fs_fd >= 0)
		1075	close (fs_fd);
		1076	#endif
		1077
		1078	if (backend_fd >= 0)
		1079	close (backend_fd);
909		1080
910	#if EV_USE_PORT	1081	#if EV_USE_PORT
911	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1082	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
912	#endif	1083	#endif
913	#if EV_USE_KQUEUE	1084	#if EV_USE_KQUEUE
…		…
922	#if EV_USE_SELECT	1093	#if EV_USE_SELECT
923	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);	1094	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
924	#endif	1095	#endif
925		1096
926	for (i = NUMPRI; i--; )	1097	for (i = NUMPRI; i--; )
		1098	{
927	array_free (pending, [i]);	1099	array_free (pending, [i]);
		1100	#if EV_IDLE_ENABLE
		1101	array_free (idle, [i]);
		1102	#endif
		1103	}
		1104
		1105	ev_free (anfds); anfdmax = 0;
928		1106
929	/* have to use the microsoft-never-gets-it-right macro */	1107	/* have to use the microsoft-never-gets-it-right macro */
930	array_free (fdchange, EMPTY0);	1108	array_free (fdchange, EMPTY);
931	array_free (timer, EMPTY0);	1109	array_free (timer, EMPTY);
932	#if EV_PERIODIC_ENABLE	1110	#if EV_PERIODIC_ENABLE
933	array_free (periodic, EMPTY0);	1111	array_free (periodic, EMPTY);
934	#endif	1112	#endif
		1113	#if EV_FORK_ENABLE
935	array_free (idle, EMPTY0);	1114	array_free (fork, EMPTY);
		1115	#endif
936	array_free (prepare, EMPTY0);	1116	array_free (prepare, EMPTY);
937	array_free (check, EMPTY0);	1117	array_free (check, EMPTY);
938		1118
939	backend = 0;	1119	backend = 0;
940	}	1120	}
941		1121
942	static void	1122	void inline_size infy_fork (EV_P);
		1123
		1124	void inline_size
943	loop_fork (EV_P)	1125	loop_fork (EV_P)
944	{	1126	{
945	#if EV_USE_PORT	1127	#if EV_USE_PORT
946	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1128	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
947	#endif	1129	#endif
948	#if EV_USE_KQUEUE	1130	#if EV_USE_KQUEUE
949	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);	1131	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
950	#endif	1132	#endif
951	#if EV_USE_EPOLL	1133	#if EV_USE_EPOLL
952	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);	1134	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1135	#endif
		1136	#if EV_USE_INOTIFY
		1137	infy_fork (EV_A);
953	#endif	1138	#endif
954		1139
955	if (ev_is_active (&sigev))	1140	if (ev_is_active (&sigev))
956	{	1141	{
957	/* default loop */	1142	/* default loop */
…		…
1073	postfork = 1;	1258	postfork = 1;
1074	}	1259	}
1075		1260
1076	/*****************************************************************************/	1261	/*****************************************************************************/
1077		1262
1078	int inline_size	1263	void
1079	any_pending (EV_P)	1264	ev_invoke (EV_P_ void *w, int revents)
1080	{	1265	{
1081	int pri;	1266	EV_CB_INVOKE ((W)w, revents);
1082
1083	for (pri = NUMPRI; pri--; )
1084	if (pendingcnt [pri])
1085	return 1;
1086
1087	return 0;
1088	}	1267	}
1089		1268
1090	void inline_speed	1269	void inline_speed
1091	call_pending (EV_P)	1270	call_pending (EV_P)
1092	{	1271	{
…		…
1097	{	1276	{
1098	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1277	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1099		1278
1100	if (expect_true (p->w))	1279	if (expect_true (p->w))
1101	{	1280	{
1102	assert (("non-pending watcher on pending list", p->w->pending));	1281	/assert (("non-pending watcher on pending list", p->w->pending));/
1103		1282
1104	p->w->pending = 0;	1283	p->w->pending = 0;
1105	EV_CB_INVOKE (p->w, p->events);	1284	EV_CB_INVOKE (p->w, p->events);
1106	}	1285	}
1107	}	1286	}
…		…
1110	void inline_size	1289	void inline_size
1111	timers_reify (EV_P)	1290	timers_reify (EV_P)
1112	{	1291	{
1113	while (timercnt && ((WT)timers [0])->at <= mn_now)	1292	while (timercnt && ((WT)timers [0])->at <= mn_now)
1114	{	1293	{
1115	ev_timer *w = timers [0];	1294	ev_timer w = (ev_timer )timers [0];
1116		1295
1117	assert (("inactive timer on timer heap detected", ev_is_active (w)));	1296	/assert (("inactive timer on timer heap detected", ev_is_active (w)));/
1118		1297
1119	/* first reschedule or stop timer */	1298	/* first reschedule or stop timer */
1120	if (w->repeat)	1299	if (w->repeat)
1121	{	1300	{
1122	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1301	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1123		1302
1124	((WT)w)->at += w->repeat;	1303	((WT)w)->at += w->repeat;
1125	if (((WT)w)->at < mn_now)	1304	if (((WT)w)->at < mn_now)
1126	((WT)w)->at = mn_now;	1305	((WT)w)->at = mn_now;
1127		1306
1128	downheap ((WT *)timers, timercnt, 0);	1307	downheap (timers, timercnt, 0);
1129	}	1308	}
1130	else	1309	else
1131	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1310	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1132		1311
1133	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	1312	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
…		…
1138	void inline_size	1317	void inline_size
1139	periodics_reify (EV_P)	1318	periodics_reify (EV_P)
1140	{	1319	{
1141	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)	1320	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1142	{	1321	{
1143	ev_periodic *w = periodics [0];	1322	ev_periodic w = (ev_periodic )periodics [0];
1144		1323
1145	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1324	/assert (("inactive timer on periodic heap detected", ev_is_active (w)));/
1146		1325
1147	/* first reschedule or stop timer */	1326	/* first reschedule or stop timer */
1148	if (w->reschedule_cb)	1327	if (w->reschedule_cb)
1149	{	1328	{
1150	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);	1329	((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));	1330	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1152	downheap ((WT *)periodics, periodiccnt, 0);	1331	downheap (periodics, periodiccnt, 0);
1153	}	1332	}
1154	else if (w->interval)	1333	else if (w->interval)
1155	{	1334	{
1156	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1335	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1336	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));	1337	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);	1338	downheap (periodics, periodiccnt, 0);
1159	}	1339	}
1160	else	1340	else
1161	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1341	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1162		1342
1163	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	1343	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
…		…
1170	int i;	1350	int i;
1171		1351
1172	/* adjust periodics after time jump */	1352	/* adjust periodics after time jump */
1173	for (i = 0; i < periodiccnt; ++i)	1353	for (i = 0; i < periodiccnt; ++i)
1174	{	1354	{
1175	ev_periodic *w = periodics [i];	1355	ev_periodic w = (ev_periodic )periodics [i];
1176		1356
1177	if (w->reschedule_cb)	1357	if (w->reschedule_cb)
1178	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1358	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1179	else if (w->interval)	1359	else if (w->interval)
1180	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;	1360	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1181	}	1361	}
1182		1362
1183	/* now rebuild the heap */	1363	/* now rebuild the heap */
1184	for (i = periodiccnt >> 1; i--; )	1364	for (i = periodiccnt >> 1; i--; )
1185	downheap ((WT *)periodics, periodiccnt, i);	1365	downheap (periodics, periodiccnt, i);
1186	}	1366	}
1187	#endif	1367	#endif
1188		1368
		1369	#if EV_IDLE_ENABLE
1189	int inline_size	1370	void inline_size
1190	time_update_monotonic (EV_P)	1371	idle_reify (EV_P)
1191	{	1372	{
		1373	if (expect_false (idleall))
		1374	{
		1375	int pri;
		1376
		1377	for (pri = NUMPRI; pri--; )
		1378	{
		1379	if (pendingcnt [pri])
		1380	break;
		1381
		1382	if (idlecnt [pri])
		1383	{
		1384	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
		1385	break;
		1386	}
		1387	}
		1388	}
		1389	}
		1390	#endif
		1391
		1392	void inline_speed
		1393	time_update (EV_P_ ev_tstamp max_block)
		1394	{
		1395	int i;
		1396
		1397	#if EV_USE_MONOTONIC
		1398	if (expect_true (have_monotonic))
		1399	{
		1400	ev_tstamp odiff = rtmn_diff;
		1401
1192	mn_now = get_clock ();	1402	mn_now = get_clock ();
1193		1403
		1404	/* only fetch the realtime clock every 0.5MIN_TIMEJUMP seconds /
		1405	/* interpolate in the meantime */
1194	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1406	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
1195	{	1407	{
1196	ev_rt_now = rtmn_diff + mn_now;	1408	ev_rt_now = rtmn_diff + mn_now;
1197	return 0;	1409	return;
1198	}	1410	}
1199	else	1411
1200	{
1201	now_floor = mn_now;	1412	now_floor = mn_now;
1202	ev_rt_now = ev_time ();	1413	ev_rt_now = ev_time ();
1203	return 1;
1204	}
1205	}
1206		1414
1207	void inline_size	1415	/* loop a few times, before making important decisions.
1208	time_update (EV_P)	1416	* on the choice of "4": one iteration isn't enough,
1209	{	1417	* in case we get preempted during the calls to
1210	int i;	1418	* ev_time and get_clock. a second call is almost guaranteed
1211		1419	* to succeed in that case, though. and looping a few more times
1212	#if EV_USE_MONOTONIC	1420	* doesn't hurt either as we only do this on time-jumps or
1213	if (expect_true (have_monotonic))	1421	* in the unlikely event of having been preempted here.
1214	{	1422	*/
1215	if (time_update_monotonic (EV_A))	1423	for (i = 4; --i; )
1216	{	1424	{
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;	1425	rtmn_diff = ev_rt_now - mn_now;
1230		1426
1231	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1427	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1232	return; /* all is well */	1428	return; /* all is well */
1233		1429
1234	ev_rt_now = ev_time ();	1430	ev_rt_now = ev_time ();
1235	mn_now = get_clock ();	1431	mn_now = get_clock ();
1236	now_floor = mn_now;	1432	now_floor = mn_now;
1237	}	1433	}
1238		1434
1239	# if EV_PERIODIC_ENABLE	1435	# if EV_PERIODIC_ENABLE
1240	periodics_reschedule (EV_A);	1436	periodics_reschedule (EV_A);
1241	# endif	1437	# endif
1242	/* no timer adjustment, as the monotonic clock doesn't jump */	1438	/* no timer adjustment, as the monotonic clock doesn't jump */
1243	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1439	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1244	}
1245	}	1440	}
1246	else	1441	else
1247	#endif	1442	#endif
1248	{	1443	{
1249	ev_rt_now = ev_time ();	1444	ev_rt_now = ev_time ();
1250		1445
1251	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1446	if (expect_false (mn_now > ev_rt_now \|\| ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1252	{	1447	{
1253	#if EV_PERIODIC_ENABLE	1448	#if EV_PERIODIC_ENABLE
1254	periodics_reschedule (EV_A);	1449	periodics_reschedule (EV_A);
1255	#endif	1450	#endif
1256
1257	/* adjust timers. this is easy, as the offset is the same for all */	1451	/* adjust timers. this is easy, as the offset is the same for all of them */
1258	for (i = 0; i < timercnt; ++i)	1452	for (i = 0; i < timercnt; ++i)
1259	((WT)timers [i])->at += ev_rt_now - mn_now;	1453	((WT)timers [i])->at += ev_rt_now - mn_now;
1260	}	1454	}
1261		1455
1262	mn_now = ev_rt_now;	1456	mn_now = ev_rt_now;
…		…
1282	{	1476	{
1283	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)	1477	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK)
1284	? EVUNLOOP_ONE	1478	? EVUNLOOP_ONE
1285	: EVUNLOOP_CANCEL;	1479	: EVUNLOOP_CANCEL;
1286		1480
1287	while (activecnt)	1481	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1482
		1483	do
1288	{	1484	{
1289	/* we might have forked, so reify kernel state if necessary */	1485	#ifndef _WIN32
		1486	if (expect_false (curpid)) /* penalise the forking check even more */
		1487	if (expect_false (getpid () != curpid))
		1488	{
		1489	curpid = getpid ();
		1490	postfork = 1;
		1491	}
		1492	#endif
		1493
1290	#if EV_FORK_ENABLE	1494	#if EV_FORK_ENABLE
		1495	/* we might have forked, so queue fork handlers */
1291	if (expect_false (postfork))	1496	if (expect_false (postfork))
1292	if (forkcnt)	1497	if (forkcnt)
1293	{	1498	{
1294	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	1499	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1295	call_pending (EV_A);	1500	call_pending (EV_A);
1296	}	1501	}
1297	#endif	1502	#endif
1298		1503
1299	/* queue check watchers (and execute them) */	1504	/* queue prepare watchers (and execute them) */
1300	if (expect_false (preparecnt))	1505	if (expect_false (preparecnt))
1301	{	1506	{
1302	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1507	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1303	call_pending (EV_A);	1508	call_pending (EV_A);
1304	}	1509	}
1305		1510
		1511	if (expect_false (!activecnt))
		1512	break;
		1513
1306	/* we might have forked, so reify kernel state if necessary */	1514	/* we might have forked, so reify kernel state if necessary */
1307	if (expect_false (postfork))	1515	if (expect_false (postfork))
1308	loop_fork (EV_A);	1516	loop_fork (EV_A);
1309		1517
1310	/* update fd-related kernel structures */	1518	/* update fd-related kernel structures */
1311	fd_reify (EV_A);	1519	fd_reify (EV_A);
1312		1520
1313	/* calculate blocking time */	1521	/* calculate blocking time */
1314	{	1522	{
1315	double block;	1523	ev_tstamp waittime = 0.;
		1524	ev_tstamp sleeptime = 0.;
1316		1525
1317	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1526	if (expect_true (!(flags & EVLOOP_NONBLOCK \|\| idleall \|\| !activecnt)))
1318	block = 0.; /* do not block at all */
1319	else
1320	{	1527	{
1321	/* update time to cancel out callback processing overhead */	1528	/* 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);	1529	time_update (EV_A_ 1e100);
1325	else
1326	#endif
1327	{
1328	ev_rt_now = ev_time ();
1329	mn_now = ev_rt_now;
1330	}
1331		1530
1332	block = MAX_BLOCKTIME;	1531	waittime = MAX_BLOCKTIME;
1333		1532
1334	if (timercnt)	1533	if (timercnt)
1335	{	1534	{
1336	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	1535	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
1337	if (block > to) block = to;	1536	if (waittime > to) waittime = to;
1338	}	1537	}
1339		1538
1340	#if EV_PERIODIC_ENABLE	1539	#if EV_PERIODIC_ENABLE
1341	if (periodiccnt)	1540	if (periodiccnt)
1342	{	1541	{
1343	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	1542	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
1344	if (block > to) block = to;	1543	if (waittime > to) waittime = to;
1345	}	1544	}
1346	#endif	1545	#endif
1347		1546
1348	if (expect_false (block < 0.)) block = 0.;	1547	if (expect_false (waittime < timeout_blocktime))
		1548	waittime = timeout_blocktime;
		1549
		1550	sleeptime = waittime - backend_fudge;
		1551
		1552	if (expect_true (sleeptime > io_blocktime))
		1553	sleeptime = io_blocktime;
		1554
		1555	if (sleeptime)
		1556	{
		1557	ev_sleep (sleeptime);
		1558	waittime -= sleeptime;
		1559	}
1349	}	1560	}
1350		1561
		1562	++loop_count;
1351	backend_poll (EV_A_ block);	1563	backend_poll (EV_A_ waittime);
		1564
		1565	/* update ev_rt_now, do magic */
		1566	time_update (EV_A_ waittime + sleeptime);
1352	}	1567	}
1353
1354	/* update ev_rt_now, do magic */
1355	time_update (EV_A);
1356		1568
1357	/* queue pending timers and reschedule them */	1569	/* queue pending timers and reschedule them */
1358	timers_reify (EV_A); /* relative timers called last */	1570	timers_reify (EV_A); /* relative timers called last */
1359	#if EV_PERIODIC_ENABLE	1571	#if EV_PERIODIC_ENABLE
1360	periodics_reify (EV_A); /* absolute timers called first */	1572	periodics_reify (EV_A); /* absolute timers called first */
1361	#endif	1573	#endif
1362		1574
		1575	#if EV_IDLE_ENABLE
1363	/* queue idle watchers unless other events are pending */	1576	/* queue idle watchers unless other events are pending */
1364	if (idlecnt && !any_pending (EV_A))	1577	idle_reify (EV_A);
1365	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1578	#endif
1366		1579
1367	/* queue check watchers, to be executed first */	1580	/* queue check watchers, to be executed first */
1368	if (expect_false (checkcnt))	1581	if (expect_false (checkcnt))
1369	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1582	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1370		1583
1371	call_pending (EV_A);	1584	call_pending (EV_A);
1372		1585
1373	if (expect_false (loop_done))
1374	break;
1375	}	1586	}
		1587	while (expect_true (activecnt && !loop_done));
1376		1588
1377	if (loop_done == EVUNLOOP_ONE)	1589	if (loop_done == EVUNLOOP_ONE)
1378	loop_done = EVUNLOOP_CANCEL;	1590	loop_done = EVUNLOOP_CANCEL;
1379	}	1591	}
1380		1592
…		…
1407	head = &(*head)->next;	1619	head = &(*head)->next;
1408	}	1620	}
1409	}	1621	}
1410		1622
1411	void inline_speed	1623	void inline_speed
1412	ev_clear_pending (EV_P_ W w)	1624	clear_pending (EV_P_ W w)
1413	{	1625	{
1414	if (w->pending)	1626	if (w->pending)
1415	{	1627	{
1416	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1628	pendings [ABSPRI (w)][w->pending - 1].w = 0;
1417	w->pending = 0;	1629	w->pending = 0;
1418	}	1630	}
1419	}	1631	}
1420		1632
		1633	int
		1634	ev_clear_pending (EV_P_ void *w)
		1635	{
		1636	W w_ = (W)w;
		1637	int pending = w_->pending;
		1638
		1639	if (expect_true (pending))
		1640	{
		1641	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1642	w_->pending = 0;
		1643	p->w = 0;
		1644	return p->events;
		1645	}
		1646	else
		1647	return 0;
		1648	}
		1649
		1650	void inline_size
		1651	pri_adjust (EV_P_ W w)
		1652	{
		1653	int pri = w->priority;
		1654	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1655	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1656	w->priority = pri;
		1657	}
		1658
1421	void inline_speed	1659	void inline_speed
1422	ev_start (EV_P_ W w, int active)	1660	ev_start (EV_P_ W w, int active)
1423	{	1661	{
1424	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1662	pri_adjust (EV_A_ w);
1425	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
1426
1427	w->active = active;	1663	w->active = active;
1428	ev_ref (EV_A);	1664	ev_ref (EV_A);
1429	}	1665	}
1430		1666
1431	void inline_size	1667	void inline_size
…		…
1435	w->active = 0;	1671	w->active = 0;
1436	}	1672	}
1437		1673
1438	/*****************************************************************************/	1674	/*****************************************************************************/
1439		1675
1440	void	1676	void noinline
1441	ev_io_start (EV_P_ ev_io *w)	1677	ev_io_start (EV_P_ ev_io *w)
1442	{	1678	{
1443	int fd = w->fd;	1679	int fd = w->fd;
1444		1680
1445	if (expect_false (ev_is_active (w)))	1681	if (expect_false (ev_is_active (w)))
…		…
1447		1683
1448	assert (("ev_io_start called with negative fd", fd >= 0));	1684	assert (("ev_io_start called with negative fd", fd >= 0));
1449		1685
1450	ev_start (EV_A_ (W)w, 1);	1686	ev_start (EV_A_ (W)w, 1);
1451	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	1687	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1452	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1688	wlist_add (&anfds[fd].head, (WL)w);
1453		1689
1454	fd_change (EV_A_ fd);	1690	fd_change (EV_A_ fd, w->events & EV_IOFDSET \| 1);
		1691	w->events &= ~EV_IOFDSET;
1455	}	1692	}
1456		1693
1457	void	1694	void noinline
1458	ev_io_stop (EV_P_ ev_io *w)	1695	ev_io_stop (EV_P_ ev_io *w)
1459	{	1696	{
1460	ev_clear_pending (EV_A_ (W)w);	1697	clear_pending (EV_A_ (W)w);
1461	if (expect_false (!ev_is_active (w)))	1698	if (expect_false (!ev_is_active (w)))
1462	return;	1699	return;
1463		1700
1464	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	1701	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1465		1702
1466	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1703	wlist_del (&anfds[w->fd].head, (WL)w);
1467	ev_stop (EV_A_ (W)w);	1704	ev_stop (EV_A_ (W)w);
1468		1705
1469	fd_change (EV_A_ w->fd);	1706	fd_change (EV_A_ w->fd, 1);
1470	}	1707	}
1471		1708
1472	void	1709	void noinline
1473	ev_timer_start (EV_P_ ev_timer *w)	1710	ev_timer_start (EV_P_ ev_timer *w)
1474	{	1711	{
1475	if (expect_false (ev_is_active (w)))	1712	if (expect_false (ev_is_active (w)))
1476	return;	1713	return;
1477		1714
1478	((WT)w)->at += mn_now;	1715	((WT)w)->at += mn_now;
1479		1716
1480	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1717	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1481		1718
1482	ev_start (EV_A_ (W)w, ++timercnt);	1719	ev_start (EV_A_ (W)w, ++timercnt);
1483	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	1720	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
1484	timers [timercnt - 1] = w;	1721	timers [timercnt - 1] = (WT)w;
1485	upheap ((WT *)timers, timercnt - 1);	1722	upheap (timers, timercnt - 1);
1486		1723
1487	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1724	/assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));/
1488	}	1725	}
1489		1726
1490	void	1727	void noinline
1491	ev_timer_stop (EV_P_ ev_timer *w)	1728	ev_timer_stop (EV_P_ ev_timer *w)
1492	{	1729	{
1493	ev_clear_pending (EV_A_ (W)w);	1730	clear_pending (EV_A_ (W)w);
1494	if (expect_false (!ev_is_active (w)))	1731	if (expect_false (!ev_is_active (w)))
1495	return;	1732	return;
1496		1733
1497	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1734	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
1498		1735
		1736	{
		1737	int active = ((W)w)->active;
		1738
1499	if (expect_true (((W)w)->active < timercnt--))	1739	if (expect_true (--active < --timercnt))
1500	{	1740	{
1501	timers [((W)w)->active - 1] = timers [timercnt];	1741	timers [active] = timers [timercnt];
1502	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1742	adjustheap (timers, timercnt, active);
1503	}	1743	}
		1744	}
1504		1745
1505	((WT)w)->at -= mn_now;	1746	((WT)w)->at -= mn_now;
1506		1747
1507	ev_stop (EV_A_ (W)w);	1748	ev_stop (EV_A_ (W)w);
1508	}	1749	}
1509		1750
1510	void	1751	void noinline
1511	ev_timer_again (EV_P_ ev_timer *w)	1752	ev_timer_again (EV_P_ ev_timer *w)
1512	{	1753	{
1513	if (ev_is_active (w))	1754	if (ev_is_active (w))
1514	{	1755	{
1515	if (w->repeat)	1756	if (w->repeat)
1516	{	1757	{
1517	((WT)w)->at = mn_now + w->repeat;	1758	((WT)w)->at = mn_now + w->repeat;
1518	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1759	adjustheap (timers, timercnt, ((W)w)->active - 1);
1519	}	1760	}
1520	else	1761	else
1521	ev_timer_stop (EV_A_ w);	1762	ev_timer_stop (EV_A_ w);
1522	}	1763	}
1523	else if (w->repeat)	1764	else if (w->repeat)
…		…
1526	ev_timer_start (EV_A_ w);	1767	ev_timer_start (EV_A_ w);
1527	}	1768	}
1528	}	1769	}
1529		1770
1530	#if EV_PERIODIC_ENABLE	1771	#if EV_PERIODIC_ENABLE
1531	void	1772	void noinline
1532	ev_periodic_start (EV_P_ ev_periodic *w)	1773	ev_periodic_start (EV_P_ ev_periodic *w)
1533	{	1774	{
1534	if (expect_false (ev_is_active (w)))	1775	if (expect_false (ev_is_active (w)))
1535	return;	1776	return;
1536		1777
…		…
1538	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	1779	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1539	else if (w->interval)	1780	else if (w->interval)
1540	{	1781	{
1541	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1782	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 */	1783	/* 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;	1784	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1544	}	1785	}
		1786	else
		1787	((WT)w)->at = w->offset;
1545		1788
1546	ev_start (EV_A_ (W)w, ++periodiccnt);	1789	ev_start (EV_A_ (W)w, ++periodiccnt);
1547	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	1790	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
1548	periodics [periodiccnt - 1] = w;	1791	periodics [periodiccnt - 1] = (WT)w;
1549	upheap ((WT *)periodics, periodiccnt - 1);	1792	upheap (periodics, periodiccnt - 1);
1550		1793
1551	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1794	/assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));/
1552	}	1795	}
1553		1796
1554	void	1797	void noinline
1555	ev_periodic_stop (EV_P_ ev_periodic *w)	1798	ev_periodic_stop (EV_P_ ev_periodic *w)
1556	{	1799	{
1557	ev_clear_pending (EV_A_ (W)w);	1800	clear_pending (EV_A_ (W)w);
1558	if (expect_false (!ev_is_active (w)))	1801	if (expect_false (!ev_is_active (w)))
1559	return;	1802	return;
1560		1803
1561	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1804	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
1562		1805
		1806	{
		1807	int active = ((W)w)->active;
		1808
1563	if (expect_true (((W)w)->active < periodiccnt--))	1809	if (expect_true (--active < --periodiccnt))
1564	{	1810	{
1565	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1811	periodics [active] = periodics [periodiccnt];
1566	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1812	adjustheap (periodics, periodiccnt, active);
1567	}	1813	}
		1814	}
1568		1815
1569	ev_stop (EV_A_ (W)w);	1816	ev_stop (EV_A_ (W)w);
1570	}	1817	}
1571		1818
1572	void	1819	void noinline
1573	ev_periodic_again (EV_P_ ev_periodic *w)	1820	ev_periodic_again (EV_P_ ev_periodic *w)
1574	{	1821	{
1575	/* TODO: use adjustheap and recalculation */	1822	/* TODO: use adjustheap and recalculation */
1576	ev_periodic_stop (EV_A_ w);	1823	ev_periodic_stop (EV_A_ w);
1577	ev_periodic_start (EV_A_ w);	1824	ev_periodic_start (EV_A_ w);
…		…
1580		1827
1581	#ifndef SA_RESTART	1828	#ifndef SA_RESTART
1582	# define SA_RESTART 0	1829	# define SA_RESTART 0
1583	#endif	1830	#endif
1584		1831
1585	void	1832	void noinline
1586	ev_signal_start (EV_P_ ev_signal *w)	1833	ev_signal_start (EV_P_ ev_signal *w)
1587	{	1834	{
1588	#if EV_MULTIPLICITY	1835	#if EV_MULTIPLICITY
1589	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));	1836	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1590	#endif	1837	#endif
1591	if (expect_false (ev_is_active (w)))	1838	if (expect_false (ev_is_active (w)))
1592	return;	1839	return;
1593		1840
1594	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1841	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1595		1842
		1843	{
		1844	#ifndef _WIN32
		1845	sigset_t full, prev;
		1846	sigfillset (&full);
		1847	sigprocmask (SIG_SETMASK, &full, &prev);
		1848	#endif
		1849
		1850	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1851
		1852	#ifndef _WIN32
		1853	sigprocmask (SIG_SETMASK, &prev, 0);
		1854	#endif
		1855	}
		1856
1596	ev_start (EV_A_ (W)w, 1);	1857	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);	1858	wlist_add (&signals [w->signum - 1].head, (WL)w);
1599		1859
1600	if (!((WL)w)->next)	1860	if (!((WL)w)->next)
1601	{	1861	{
1602	#if _WIN32	1862	#if _WIN32
1603	signal (w->signum, sighandler);	1863	signal (w->signum, sighandler);
…		…
1609	sigaction (w->signum, &sa, 0);	1869	sigaction (w->signum, &sa, 0);
1610	#endif	1870	#endif
1611	}	1871	}
1612	}	1872	}
1613		1873
1614	void	1874	void noinline
1615	ev_signal_stop (EV_P_ ev_signal *w)	1875	ev_signal_stop (EV_P_ ev_signal *w)
1616	{	1876	{
1617	ev_clear_pending (EV_A_ (W)w);	1877	clear_pending (EV_A_ (W)w);
1618	if (expect_false (!ev_is_active (w)))	1878	if (expect_false (!ev_is_active (w)))
1619	return;	1879	return;
1620		1880
1621	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1881	wlist_del (&signals [w->signum - 1].head, (WL)w);
1622	ev_stop (EV_A_ (W)w);	1882	ev_stop (EV_A_ (W)w);
1623		1883
1624	if (!signals [w->signum - 1].head)	1884	if (!signals [w->signum - 1].head)
1625	signal (w->signum, SIG_DFL);	1885	signal (w->signum, SIG_DFL);
1626	}	1886	}
…		…
1633	#endif	1893	#endif
1634	if (expect_false (ev_is_active (w)))	1894	if (expect_false (ev_is_active (w)))
1635	return;	1895	return;
1636		1896
1637	ev_start (EV_A_ (W)w, 1);	1897	ev_start (EV_A_ (W)w, 1);
1638	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1898	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1639	}	1899	}
1640		1900
1641	void	1901	void
1642	ev_child_stop (EV_P_ ev_child *w)	1902	ev_child_stop (EV_P_ ev_child *w)
1643	{	1903	{
1644	ev_clear_pending (EV_A_ (W)w);	1904	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	1905	if (expect_false (!ev_is_active (w)))
1646	return;	1906	return;
1647		1907
1648	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	1908	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1649	ev_stop (EV_A_ (W)w);	1909	ev_stop (EV_A_ (W)w);
1650	}	1910	}
1651		1911
1652	#if EV_STAT_ENABLE	1912	#if EV_STAT_ENABLE
1653		1913
…		…
1657	# endif	1917	# endif
1658		1918
1659	#define DEF_STAT_INTERVAL 5.0074891	1919	#define DEF_STAT_INTERVAL 5.0074891
1660	#define MIN_STAT_INTERVAL 0.1074891	1920	#define MIN_STAT_INTERVAL 0.1074891
1661		1921
		1922	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1923
		1924	#if EV_USE_INOTIFY
		1925	# define EV_INOTIFY_BUFSIZE 8192
		1926
		1927	static void noinline
		1928	infy_add (EV_P_ ev_stat *w)
		1929	{
		1930	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);
		1931
		1932	if (w->wd < 0)
		1933	{
		1934	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1935
		1936	/* monitor some parent directory for speedup hints */
		1937	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
		1938	{
		1939	char path [4096];
		1940	strcpy (path, w->path);
		1941
		1942	do
		1943	{
		1944	int mask = IN_MASK_ADD \| IN_DELETE_SELF \| IN_MOVE_SELF
		1945	\| (errno == EACCES ? IN_ATTRIB : IN_CREATE \| IN_MOVED_TO);
		1946
		1947	char *pend = strrchr (path, '/');
		1948
		1949	if (!pend)
		1950	break; /* whoops, no '/', complain to your admin */
		1951
		1952	*pend = 0;
		1953	w->wd = inotify_add_watch (fs_fd, path, mask);
		1954	}
		1955	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
		1956	}
		1957	}
		1958	else
		1959	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1960
		1961	if (w->wd >= 0)
		1962	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1963	}
		1964
		1965	static void noinline
		1966	infy_del (EV_P_ ev_stat *w)
		1967	{
		1968	int slot;
		1969	int wd = w->wd;
		1970
		1971	if (wd < 0)
		1972	return;
		1973
		1974	w->wd = -2;
		1975	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1976	wlist_del (&fs_hash [slot].head, (WL)w);
		1977
		1978	/* remove this watcher, if others are watching it, they will rearm */
		1979	inotify_rm_watch (fs_fd, wd);
		1980	}
		1981
		1982	static void noinline
		1983	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1984	{
		1985	if (slot < 0)
		1986	/* overflow, need to check for all hahs slots */
		1987	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1988	infy_wd (EV_A_ slot, wd, ev);
		1989	else
		1990	{
		1991	WL w_;
		1992
		1993	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1994	{
		1995	ev_stat w = (ev_stat )w_;
		1996	w_ = w_->next; /* lets us remove this watcher and all before it */
		1997
		1998	if (w->wd == wd \|\| wd == -1)
		1999	{
		2000	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
		2001	{
		2002	w->wd = -1;
		2003	infy_add (EV_A_ w); /* re-add, no matter what */
		2004	}
		2005
		2006	stat_timer_cb (EV_A_ &w->timer, 0);
		2007	}
		2008	}
		2009	}
		2010	}
		2011
		2012	static void
		2013	infy_cb (EV_P_ ev_io *w, int revents)
		2014	{
		2015	char buf [EV_INOTIFY_BUFSIZE];
		2016	struct inotify_event ev = (struct inotify_event )buf;
		2017	int ofs;
		2018	int len = read (fs_fd, buf, sizeof (buf));
		2019
		2020	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2021	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2022	}
		2023
		2024	void inline_size
		2025	infy_init (EV_P)
		2026	{
		2027	if (fs_fd != -2)
		2028	return;
		2029
		2030	fs_fd = inotify_init ();
		2031
		2032	if (fs_fd >= 0)
		2033	{
		2034	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2035	ev_set_priority (&fs_w, EV_MAXPRI);
		2036	ev_io_start (EV_A_ &fs_w);
		2037	}
		2038	}
		2039
		2040	void inline_size
		2041	infy_fork (EV_P)
		2042	{
		2043	int slot;
		2044
		2045	if (fs_fd < 0)
		2046	return;
		2047
		2048	close (fs_fd);
		2049	fs_fd = inotify_init ();
		2050
		2051	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2052	{
		2053	WL w_ = fs_hash [slot].head;
		2054	fs_hash [slot].head = 0;
		2055
		2056	while (w_)
		2057	{
		2058	ev_stat w = (ev_stat )w_;
		2059	w_ = w_->next; /* lets us add this watcher */
		2060
		2061	w->wd = -1;
		2062
		2063	if (fs_fd >= 0)
		2064	infy_add (EV_A_ w); /* re-add, no matter what */
		2065	else
		2066	ev_timer_start (EV_A_ &w->timer);
		2067	}
		2068
		2069	}
		2070	}
		2071
		2072	#endif
		2073
1662	void	2074	void
1663	ev_stat_stat (EV_P_ ev_stat *w)	2075	ev_stat_stat (EV_P_ ev_stat *w)
1664	{	2076	{
1665	if (lstat (w->path, &w->attr) < 0)	2077	if (lstat (w->path, &w->attr) < 0)
1666	w->attr.st_nlink = 0;	2078	w->attr.st_nlink = 0;
1667	else if (!w->attr.st_nlink)	2079	else if (!w->attr.st_nlink)
1668	w->attr.st_nlink = 1;	2080	w->attr.st_nlink = 1;
1669	}	2081	}
1670		2082
1671	static void	2083	static void noinline
1672	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	2084	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1673	{	2085	{
1674	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	2086	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
1675		2087
1676	/* we copy this here each the time so that */	2088	/* we copy this here each the time so that */
1677	/* prev has the old value when the callback gets invoked */	2089	/* prev has the old value when the callback gets invoked */
1678	w->prev = w->attr;	2090	w->prev = w->attr;
1679	ev_stat_stat (EV_A_ w);	2091	ev_stat_stat (EV_A_ w);
1680		2092
1681	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))	2093	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2094	if (
		2095	w->prev.st_dev != w->attr.st_dev
		2096	\|\| w->prev.st_ino != w->attr.st_ino
		2097	\|\| w->prev.st_mode != w->attr.st_mode
		2098	\|\| w->prev.st_nlink != w->attr.st_nlink
		2099	\|\| w->prev.st_uid != w->attr.st_uid
		2100	\|\| w->prev.st_gid != w->attr.st_gid
		2101	\|\| w->prev.st_rdev != w->attr.st_rdev
		2102	\|\| w->prev.st_size != w->attr.st_size
		2103	\|\| w->prev.st_atime != w->attr.st_atime
		2104	\|\| w->prev.st_mtime != w->attr.st_mtime
		2105	\|\| w->prev.st_ctime != w->attr.st_ctime
		2106	) {
		2107	#if EV_USE_INOTIFY
		2108	infy_del (EV_A_ w);
		2109	infy_add (EV_A_ w);
		2110	ev_stat_stat (EV_A_ w); /* avoid race... */
		2111	#endif
		2112
1682	ev_feed_event (EV_A_ w, EV_STAT);	2113	ev_feed_event (EV_A_ w, EV_STAT);
		2114	}
1683	}	2115	}
1684		2116
1685	void	2117	void
1686	ev_stat_start (EV_P_ ev_stat *w)	2118	ev_stat_start (EV_P_ ev_stat *w)
1687	{	2119	{
…		…
1697	if (w->interval < MIN_STAT_INTERVAL)	2129	if (w->interval < MIN_STAT_INTERVAL)
1698	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;	2130	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
1699		2131
1700	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	2132	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
1701	ev_set_priority (&w->timer, ev_priority (w));	2133	ev_set_priority (&w->timer, ev_priority (w));
		2134
		2135	#if EV_USE_INOTIFY
		2136	infy_init (EV_A);
		2137
		2138	if (fs_fd >= 0)
		2139	infy_add (EV_A_ w);
		2140	else
		2141	#endif
1702	ev_timer_start (EV_A_ &w->timer);	2142	ev_timer_start (EV_A_ &w->timer);
1703		2143
1704	ev_start (EV_A_ (W)w, 1);	2144	ev_start (EV_A_ (W)w, 1);
1705	}	2145	}
1706		2146
1707	void	2147	void
1708	ev_stat_stop (EV_P_ ev_stat *w)	2148	ev_stat_stop (EV_P_ ev_stat *w)
1709	{	2149	{
1710	ev_clear_pending (EV_A_ (W)w);	2150	clear_pending (EV_A_ (W)w);
1711	if (expect_false (!ev_is_active (w)))	2151	if (expect_false (!ev_is_active (w)))
1712	return;	2152	return;
1713		2153
		2154	#if EV_USE_INOTIFY
		2155	infy_del (EV_A_ w);
		2156	#endif
1714	ev_timer_stop (EV_A_ &w->timer);	2157	ev_timer_stop (EV_A_ &w->timer);
1715		2158
1716	ev_stop (EV_A_ (W)w);	2159	ev_stop (EV_A_ (W)w);
1717	}	2160	}
1718	#endif	2161	#endif
1719		2162
		2163	#if EV_IDLE_ENABLE
1720	void	2164	void
1721	ev_idle_start (EV_P_ ev_idle *w)	2165	ev_idle_start (EV_P_ ev_idle *w)
1722	{	2166	{
1723	if (expect_false (ev_is_active (w)))	2167	if (expect_false (ev_is_active (w)))
1724	return;	2168	return;
1725		2169
		2170	pri_adjust (EV_A_ (W)w);
		2171
		2172	{
		2173	int active = ++idlecnt [ABSPRI (w)];
		2174
		2175	++idleall;
1726	ev_start (EV_A_ (W)w, ++idlecnt);	2176	ev_start (EV_A_ (W)w, active);
		2177
1727	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);	2178	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
1728	idles [idlecnt - 1] = w;	2179	idles [ABSPRI (w)][active - 1] = w;
		2180	}
1729	}	2181	}
1730		2182
1731	void	2183	void
1732	ev_idle_stop (EV_P_ ev_idle *w)	2184	ev_idle_stop (EV_P_ ev_idle *w)
1733	{	2185	{
1734	ev_clear_pending (EV_A_ (W)w);	2186	clear_pending (EV_A_ (W)w);
1735	if (expect_false (!ev_is_active (w)))	2187	if (expect_false (!ev_is_active (w)))
1736	return;	2188	return;
1737		2189
1738	{	2190	{
1739	int active = ((W)w)->active;	2191	int active = ((W)w)->active;
1740	idles [active - 1] = idles [--idlecnt];	2192
		2193	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
1741	((W)idles [active - 1])->active = active;	2194	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2195
		2196	ev_stop (EV_A_ (W)w);
		2197	--idleall;
1742	}	2198	}
1743
1744	ev_stop (EV_A_ (W)w);
1745	}	2199	}
		2200	#endif
1746		2201
1747	void	2202	void
1748	ev_prepare_start (EV_P_ ev_prepare *w)	2203	ev_prepare_start (EV_P_ ev_prepare *w)
1749	{	2204	{
1750	if (expect_false (ev_is_active (w)))	2205	if (expect_false (ev_is_active (w)))
…		…
1756	}	2211	}
1757		2212
1758	void	2213	void
1759	ev_prepare_stop (EV_P_ ev_prepare *w)	2214	ev_prepare_stop (EV_P_ ev_prepare *w)
1760	{	2215	{
1761	ev_clear_pending (EV_A_ (W)w);	2216	clear_pending (EV_A_ (W)w);
1762	if (expect_false (!ev_is_active (w)))	2217	if (expect_false (!ev_is_active (w)))
1763	return;	2218	return;
1764		2219
1765	{	2220	{
1766	int active = ((W)w)->active;	2221	int active = ((W)w)->active;
…		…
1783	}	2238	}
1784		2239
1785	void	2240	void
1786	ev_check_stop (EV_P_ ev_check *w)	2241	ev_check_stop (EV_P_ ev_check *w)
1787	{	2242	{
1788	ev_clear_pending (EV_A_ (W)w);	2243	clear_pending (EV_A_ (W)w);
1789	if (expect_false (!ev_is_active (w)))	2244	if (expect_false (!ev_is_active (w)))
1790	return;	2245	return;
1791		2246
1792	{	2247	{
1793	int active = ((W)w)->active;	2248	int active = ((W)w)->active;
…		…
1800		2255
1801	#if EV_EMBED_ENABLE	2256	#if EV_EMBED_ENABLE
1802	void noinline	2257	void noinline
1803	ev_embed_sweep (EV_P_ ev_embed *w)	2258	ev_embed_sweep (EV_P_ ev_embed *w)
1804	{	2259	{
1805	ev_loop (w->loop, EVLOOP_NONBLOCK);	2260	ev_loop (w->other, EVLOOP_NONBLOCK);
1806	}	2261	}
1807		2262
1808	static void	2263	static void
1809	embed_cb (EV_P_ ev_io *io, int revents)	2264	embed_io_cb (EV_P_ ev_io *io, int revents)
1810	{	2265	{
1811	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));	2266	ev_embed w = (ev_embed )(((char *)io) - offsetof (ev_embed, io));
1812		2267
1813	if (ev_cb (w))	2268	if (ev_cb (w))
1814	ev_feed_event (EV_A_ (W)w, EV_EMBED);	2269	ev_feed_event (EV_A_ (W)w, EV_EMBED);
1815	else	2270	else
1816	ev_embed_sweep (loop, w);	2271	ev_loop (w->other, EVLOOP_NONBLOCK);
1817	}	2272	}
		2273
		2274	static void
		2275	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2276	{
		2277	ev_embed w = (ev_embed )(((char *)prepare) - offsetof (ev_embed, prepare));
		2278
		2279	{
		2280	struct ev_loop *loop = w->other;
		2281
		2282	while (fdchangecnt)
		2283	{
		2284	fd_reify (EV_A);
		2285	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2286	}
		2287	}
		2288	}
		2289
		2290	#if 0
		2291	static void
		2292	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2293	{
		2294	ev_idle_stop (EV_A_ idle);
		2295	}
		2296	#endif
1818		2297
1819	void	2298	void
1820	ev_embed_start (EV_P_ ev_embed *w)	2299	ev_embed_start (EV_P_ ev_embed *w)
1821	{	2300	{
1822	if (expect_false (ev_is_active (w)))	2301	if (expect_false (ev_is_active (w)))
1823	return;	2302	return;
1824		2303
1825	{	2304	{
1826	struct ev_loop *loop = w->loop;	2305	struct ev_loop *loop = w->other;
1827	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	2306	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
1828	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	2307	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
1829	}	2308	}
1830		2309
1831	ev_set_priority (&w->io, ev_priority (w));	2310	ev_set_priority (&w->io, ev_priority (w));
1832	ev_io_start (EV_A_ &w->io);	2311	ev_io_start (EV_A_ &w->io);
1833		2312
		2313	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2314	ev_set_priority (&w->prepare, EV_MINPRI);
		2315	ev_prepare_start (EV_A_ &w->prepare);
		2316
		2317	/ev_idle_init (&w->idle, e,bed_idle_cb);/
		2318
1834	ev_start (EV_A_ (W)w, 1);	2319	ev_start (EV_A_ (W)w, 1);
1835	}	2320	}
1836		2321
1837	void	2322	void
1838	ev_embed_stop (EV_P_ ev_embed *w)	2323	ev_embed_stop (EV_P_ ev_embed *w)
1839	{	2324	{
1840	ev_clear_pending (EV_A_ (W)w);	2325	clear_pending (EV_A_ (W)w);
1841	if (expect_false (!ev_is_active (w)))	2326	if (expect_false (!ev_is_active (w)))
1842	return;	2327	return;
1843		2328
1844	ev_io_stop (EV_A_ &w->io);	2329	ev_io_stop (EV_A_ &w->io);
		2330	ev_prepare_stop (EV_A_ &w->prepare);
1845		2331
1846	ev_stop (EV_A_ (W)w);	2332	ev_stop (EV_A_ (W)w);
1847	}	2333	}
1848	#endif	2334	#endif
1849		2335
…		…
1860	}	2346	}
1861		2347
1862	void	2348	void
1863	ev_fork_stop (EV_P_ ev_fork *w)	2349	ev_fork_stop (EV_P_ ev_fork *w)
1864	{	2350	{
1865	ev_clear_pending (EV_A_ (W)w);	2351	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2352	if (expect_false (!ev_is_active (w)))
1867	return;	2353	return;
1868		2354
1869	{	2355	{
1870	int active = ((W)w)->active;	2356	int active = ((W)w)->active;
…		…
1938	ev_timer_set (&once->to, timeout, 0.);	2424	ev_timer_set (&once->to, timeout, 0.);
1939	ev_timer_start (EV_A_ &once->to);	2425	ev_timer_start (EV_A_ &once->to);
1940	}	2426	}
1941	}	2427	}
1942		2428
		2429	#if EV_MULTIPLICITY
		2430	#include "ev_wrap.h"
		2431	#endif
		2432
1943	#ifdef __cplusplus	2433	#ifdef __cplusplus
1944	}	2434	}
1945	#endif	2435	#endif
1946		2436

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Comparing libev/ev.c (file contents): Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs. Revision 1.195 by root, Sat Dec 22 11:44:51 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.149 by root, Tue Nov 27 19:23:31 2007 UTC vs.
Revision 1.195 by root, Sat Dec 22 11:44:51 2007 UTC