ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.279 by root, Fri Feb 6 20:17:43 2009 UTC vs.
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC

…		…
57	# endif	57	# endif
58	# ifndef EV_USE_MONOTONIC	58	# ifndef EV_USE_MONOTONIC
59	# define EV_USE_MONOTONIC 1	59	# define EV_USE_MONOTONIC 1
60	# endif	60	# endif
61	# endif	61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
62	# endif	64	# endif
63		65
64	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
65	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
66	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
…		…
131	# else	133	# else
132	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
133	# endif	135	# endif
134	# endif	136	# endif
135		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD 1
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
136	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
137	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
138	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
139	# else	149	# else
140	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
…		…
176	# endif	186	# endif
177	#endif	187	#endif
178		188
179	/* this block tries to deduce configuration from header-defined symbols and defaults */	189	/* this block tries to deduce configuration from header-defined symbols and defaults */
180		190
		191	/* try to deduce the maximum number of signals on this platform */
		192	/* one some platforms, NSIG is one too large. we do not bother */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
181	#ifndef EV_USE_CLOCK_SYSCALL	219	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	220	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	221	# define EV_USE_CLOCK_SYSCALL 1
184	# else	222	# else
185	# define EV_USE_CLOCK_SYSCALL 0	223	# define EV_USE_CLOCK_SYSCALL 0
…		…
264	# else	302	# else
265	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
266	# endif	304	# endif
267	#endif	305	#endif
268		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
269	#if 0 /* debugging */	315	#if 0 /* debugging */
270	# define EV_VERIFY 3	316	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	317	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	318	# define EV_HEAP_CACHE_AT 1
273	#endif	319	#endif
…		…
280	# define EV_USE_4HEAP !EV_MINIMAL	326	# define EV_USE_4HEAP !EV_MINIMAL
281	#endif	327	#endif
282		328
283	#ifndef EV_HEAP_CACHE_AT	329	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		331	#endif
		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
285	#endif	345	#endif
286		346
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288		348
289	#ifndef CLOCK_MONOTONIC	349	#ifndef CLOCK_MONOTONIC
…		…
320		380
321	#if EV_SELECT_IS_WINSOCKET	381	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	382	# include <winsock.h>
323	#endif	383	#endif
324		384
325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
326	/* which makes programs even slower. might work on other unices, too. */
327	#if EV_USE_CLOCK_SYSCALL
328	# include <syscall.h>
329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
330	# undef EV_USE_MONOTONIC
331	# define EV_USE_MONOTONIC 1
332	#endif
333
334	#if EV_USE_EVENTFD	385	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	386	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	387	# include <stdint.h>
		388	# ifndef EFD_NONBLOCK
		389	# define EFD_NONBLOCK O_NONBLOCK
		390	# endif
		391	# ifndef EFD_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# endif
337	# ifdef __cplusplus	394	# ifdef __cplusplus
338	extern "C" {	395	extern "C" {
339	# endif	396	# endif
340	int eventfd (unsigned int initval, int flags);	397	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	398	# ifdef __cplusplus
342	}	399	}
343	# endif	400	# endif
		401	#endif
		402
		403	#if EV_USE_SIGNALFD
		404	# include <sys/signalfd.h>
344	#endif	405	#endif
345		406
346	/**/	407	/**/
347		408
348	#if EV_VERIFY >= 3	409	#if EV_VERIFY >= 3
…		…
384	# define inline_speed static noinline	445	# define inline_speed static noinline
385	#else	446	#else
386	# define inline_speed static inline	447	# define inline_speed static inline
387	#endif	448	#endif
388		449
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	450	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		451
		452	#if EV_MINPRI == EV_MAXPRI
		453	# define ABSPRI(w) (((W)w), 0)
		454	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	455	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		456	#endif
391		457
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	458	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	459	#define EMPTY2(a,b) /* used to suppress some warnings */
394		460
395	typedef ev_watcher *W;	461	typedef ev_watcher *W;
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	544	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	545	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		546
481	/*****************************************************************************/	547	/*****************************************************************************/
482		548
		549	/* set in reify when reification needed */
		550	#define EV_ANFD_REIFY 1
		551
		552	/* file descriptor info structure */
483	typedef struct	553	typedef struct
484	{	554	{
485	WL head;	555	WL head;
486	unsigned char events;	556	unsigned char events; /* the events watched for */
487	unsigned char reify;	557	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	558	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	559	unsigned char unused;
490	#if EV_USE_EPOLL	560	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	561	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	562	#endif
493	#if EV_SELECT_IS_WINSOCKET	563	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	564	SOCKET handle;
495	#endif	565	#endif
496	} ANFD;	566	} ANFD;
497		567
		568	/* stores the pending event set for a given watcher */
498	typedef struct	569	typedef struct
499	{	570	{
500	W w;	571	W w;
501	int events;	572	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	573	} ANPENDING;
503		574
504	#if EV_USE_INOTIFY	575	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	576	/* hash table entry per inotify-id */
506	typedef struct	577	typedef struct
…		…
509	} ANFS;	580	} ANFS;
510	#endif	581	#endif
511		582
512	/* Heap Entry */	583	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	584	#if EV_HEAP_CACHE_AT
		585	/* a heap element */
514	typedef struct {	586	typedef struct {
515	ev_tstamp at;	587	ev_tstamp at;
516	WT w;	588	WT w;
517	} ANHE;	589	} ANHE;
518		590
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	591	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	592	#define ANHE_at(he) (he).at /* access cached at, read-only */
521	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	593	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	594	#else
		595	/* a heap element */
523	typedef WT ANHE;	596	typedef WT ANHE;
524		597
525	#define ANHE_w(he) (he)	598	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	599	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	600	#define ANHE_at_cache(he)
…		…
551		624
552	static int ev_default_loop_ptr;	625	static int ev_default_loop_ptr;
553		626
554	#endif	627	#endif
555		628
		629	#if EV_MINIMAL < 2
		630	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		631	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		632	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		633	#else
		634	# define EV_RELEASE_CB (void)0
		635	# define EV_ACQUIRE_CB (void)0
		636	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		637	#endif
		638
		639	#define EVUNLOOP_RECURSE 0x80
		640
556	/*****************************************************************************/	641	/*****************************************************************************/
557		642
		643	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	644	ev_tstamp
559	ev_time (void)	645	ev_time (void)
560	{	646	{
561	#if EV_USE_REALTIME	647	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	648	if (expect_true (have_realtime))
…		…
569		655
570	struct timeval tv;	656	struct timeval tv;
571	gettimeofday (&tv, 0);	657	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	658	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	659	}
		660	#endif
574		661
575	ev_tstamp inline_size	662	inline_size ev_tstamp
576	get_clock (void)	663	get_clock (void)
577	{	664	{
578	#if EV_USE_MONOTONIC	665	#if EV_USE_MONOTONIC
579	if (expect_true (have_monotonic))	666	if (expect_true (have_monotonic))
580	{	667	{
…		…
614		701
615	tv.tv_sec = (time_t)delay;	702	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	703	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		704
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	705	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	706	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	707	/* by older ones */
621	select (0, 0, 0, 0, &tv);	708	select (0, 0, 0, 0, &tv);
622	#endif	709	#endif
623	}	710	}
624	}	711	}
625		712
626	/*****************************************************************************/	713	/*****************************************************************************/
627		714
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	715	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		716
630	int inline_size	717	/* find a suitable new size for the given array, */
		718	/* hopefully by rounding to a ncie-to-malloc size */
		719	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	720	array_nextsize (int elem, int cur, int cnt)
632	{	721	{
633	int ncur = cur + 1;	722	int ncur = cur + 1;
634		723
635	do	724	do
…		…
676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	765	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
677	}	766	}
678	#endif	767	#endif
679		768
680	#define array_free(stem, idx) \	769	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	770	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		771
683	/*****************************************************************************/	772	/*****************************************************************************/
		773
		774	/* dummy callback for pending events */
		775	static void noinline
		776	pendingcb (EV_P_ ev_prepare *w, int revents)
		777	{
		778	}
684		779
685	void noinline	780	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	781	ev_feed_event (EV_P_ void *w, int revents)
687	{	782	{
688	W w_ = (W)w;	783	W w_ = (W)w;
…		…
697	pendings [pri][w_->pending - 1].w = w_;	792	pendings [pri][w_->pending - 1].w = w_;
698	pendings [pri][w_->pending - 1].events = revents;	793	pendings [pri][w_->pending - 1].events = revents;
699	}	794	}
700	}	795	}
701		796
702	void inline_speed	797	inline_speed void
		798	feed_reverse (EV_P_ W w)
		799	{
		800	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		801	rfeeds [rfeedcnt++] = w;
		802	}
		803
		804	inline_size void
		805	feed_reverse_done (EV_P_ int revents)
		806	{
		807	do
		808	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		809	while (rfeedcnt);
		810	}
		811
		812	inline_speed void
703	queue_events (EV_P_ W *events, int eventcnt, int type)	813	queue_events (EV_P_ W *events, int eventcnt, int type)
704	{	814	{
705	int i;	815	int i;
706		816
707	for (i = 0; i < eventcnt; ++i)	817	for (i = 0; i < eventcnt; ++i)
708	ev_feed_event (EV_A_ events [i], type);	818	ev_feed_event (EV_A_ events [i], type);
709	}	819	}
710		820
711	/*****************************************************************************/	821	/*****************************************************************************/
712		822
713	void inline_speed	823	inline_speed void
714	fd_event (EV_P_ int fd, int revents)	824	fd_event_nc (EV_P_ int fd, int revents)
715	{	825	{
716	ANFD *anfd = anfds + fd;	826	ANFD *anfd = anfds + fd;
717	ev_io *w;	827	ev_io *w;
718		828
719	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	829	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
723	if (ev)	833	if (ev)
724	ev_feed_event (EV_A_ (W)w, ev);	834	ev_feed_event (EV_A_ (W)w, ev);
725	}	835	}
726	}	836	}
727		837
		838	/* do not submit kernel events for fds that have reify set */
		839	/* because that means they changed while we were polling for new events */
		840	inline_speed void
		841	fd_event (EV_P_ int fd, int revents)
		842	{
		843	ANFD *anfd = anfds + fd;
		844
		845	if (expect_true (!anfd->reify))
		846	fd_event_nc (EV_A_ fd, revents);
		847	}
		848
728	void	849	void
729	ev_feed_fd_event (EV_P_ int fd, int revents)	850	ev_feed_fd_event (EV_P_ int fd, int revents)
730	{	851	{
731	if (fd >= 0 && fd < anfdmax)	852	if (fd >= 0 && fd < anfdmax)
732	fd_event (EV_A_ fd, revents);	853	fd_event_nc (EV_A_ fd, revents);
733	}	854	}
734		855
735	void inline_size	856	/* make sure the external fd watch events are in-sync */
		857	/* with the kernel/libev internal state */
		858	inline_size void
736	fd_reify (EV_P)	859	fd_reify (EV_P)
737	{	860	{
738	int i;	861	int i;
739		862
740	for (i = 0; i < fdchangecnt; ++i)	863	for (i = 0; i < fdchangecnt; ++i)
…		…
766	unsigned char o_reify = anfd->reify;	889	unsigned char o_reify = anfd->reify;
767		890
768	anfd->reify = 0;	891	anfd->reify = 0;
769	anfd->events = events;	892	anfd->events = events;
770		893
771	if (o_events != events || o_reify & EV_IOFDSET)	894	if (o_events != events || o_reify & EV__IOFDSET)
772	backend_modify (EV_A_ fd, o_events, events);	895	backend_modify (EV_A_ fd, o_events, events);
773	}	896	}
774	}	897	}
775		898
776	fdchangecnt = 0;	899	fdchangecnt = 0;
777	}	900	}
778		901
779	void inline_size	902	/* something about the given fd changed */
		903	inline_size void
780	fd_change (EV_P_ int fd, int flags)	904	fd_change (EV_P_ int fd, int flags)
781	{	905	{
782	unsigned char reify = anfds [fd].reify;	906	unsigned char reify = anfds [fd].reify;
783	anfds [fd].reify |= flags;	907	anfds [fd].reify |= flags;
784		908
…		…
788	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	912	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789	fdchanges [fdchangecnt - 1] = fd;	913	fdchanges [fdchangecnt - 1] = fd;
790	}	914	}
791	}	915	}
792		916
793	void inline_speed	917	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		918	inline_speed void
794	fd_kill (EV_P_ int fd)	919	fd_kill (EV_P_ int fd)
795	{	920	{
796	ev_io *w;	921	ev_io *w;
797		922
798	while ((w = (ev_io *)anfds [fd].head))	923	while ((w = (ev_io *)anfds [fd].head))
…		…
800	ev_io_stop (EV_A_ w);	925	ev_io_stop (EV_A_ w);
801	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	926	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802	}	927	}
803	}	928	}
804		929
805	int inline_size	930	/* check whether the given fd is atcually valid, for error recovery */
		931	inline_size int
806	fd_valid (int fd)	932	fd_valid (int fd)
807	{	933	{
808	#ifdef _WIN32	934	#ifdef _WIN32
809	return _get_osfhandle (fd) != -1;	935	return _get_osfhandle (fd) != -1;
810	#else	936	#else
…		…
847	for (fd = 0; fd < anfdmax; ++fd)	973	for (fd = 0; fd < anfdmax; ++fd)
848	if (anfds [fd].events)	974	if (anfds [fd].events)
849	{	975	{
850	anfds [fd].events = 0;	976	anfds [fd].events = 0;
851	anfds [fd].emask = 0;	977	anfds [fd].emask = 0;
852	fd_change (EV_A_ fd, EV_IOFDSET | 1);	978	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853	}	979	}
854	}	980	}
855		981
856	/*****************************************************************************/	982	/*****************************************************************************/
857		983
…		…
873	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	999	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1000	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875	#define UPHEAP_DONE(p,k) ((p) == (k))	1001	#define UPHEAP_DONE(p,k) ((p) == (k))
876		1002
877	/* away from the root */	1003	/* away from the root */
878	void inline_speed	1004	inline_speed void
879	downheap (ANHE *heap, int N, int k)	1005	downheap (ANHE *heap, int N, int k)
880	{	1006	{
881	ANHE he = heap [k];	1007	ANHE he = heap [k];
882	ANHE *E = heap + N + HEAP0;	1008	ANHE *E = heap + N + HEAP0;
883		1009
…		…
923	#define HEAP0 1	1049	#define HEAP0 1
924	#define HPARENT(k) ((k) >> 1)	1050	#define HPARENT(k) ((k) >> 1)
925	#define UPHEAP_DONE(p,k) (!(p))	1051	#define UPHEAP_DONE(p,k) (!(p))
926		1052
927	/* away from the root */	1053	/* away from the root */
928	void inline_speed	1054	inline_speed void
929	downheap (ANHE *heap, int N, int k)	1055	downheap (ANHE *heap, int N, int k)
930	{	1056	{
931	ANHE he = heap [k];	1057	ANHE he = heap [k];
932		1058
933	for (;;)	1059	for (;;)
…		…
953	ev_active (ANHE_w (he)) = k;	1079	ev_active (ANHE_w (he)) = k;
954	}	1080	}
955	#endif	1081	#endif
956		1082
957	/* towards the root */	1083	/* towards the root */
958	void inline_speed	1084	inline_speed void
959	upheap (ANHE *heap, int k)	1085	upheap (ANHE *heap, int k)
960	{	1086	{
961	ANHE he = heap [k];	1087	ANHE he = heap [k];
962		1088
963	for (;;)	1089	for (;;)
…		…
974		1100
975	heap [k] = he;	1101	heap [k] = he;
976	ev_active (ANHE_w (he)) = k;	1102	ev_active (ANHE_w (he)) = k;
977	}	1103	}
978		1104
979	void inline_size	1105	/* move an element suitably so it is in a correct place */
		1106	inline_size void
980	adjustheap (ANHE *heap, int N, int k)	1107	adjustheap (ANHE *heap, int N, int k)
981	{	1108	{
982	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1109	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
983	upheap (heap, k);	1110	upheap (heap, k);
984	else	1111	else
985	downheap (heap, N, k);	1112	downheap (heap, N, k);
986	}	1113	}
987		1114
988	/* rebuild the heap: this function is used only once and executed rarely */	1115	/* rebuild the heap: this function is used only once and executed rarely */
989	void inline_size	1116	inline_size void
990	reheap (ANHE *heap, int N)	1117	reheap (ANHE *heap, int N)
991	{	1118	{
992	int i;	1119	int i;
993		1120
994	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1121	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
997	upheap (heap, i + HEAP0);	1124	upheap (heap, i + HEAP0);
998	}	1125	}
999		1126
1000	/*****************************************************************************/	1127	/*****************************************************************************/
1001		1128
		1129	/* associate signal watchers to a signal signal */
1002	typedef struct	1130	typedef struct
1003	{	1131	{
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
1004	WL head;	1135	WL head;
1005	EV_ATOMIC_T gotsig;	1136	EV_ATOMIC_T gotsig;
1006	} ANSIG;	1137	} ANSIG;
1007		1138
1008	static ANSIG *signals;	1139	static ANSIG signals [EV_NSIG - 1];
1009	static int signalmax;
1010
1011	static EV_ATOMIC_T gotsig;	1140	static EV_ATOMIC_T gotsig;
1012		1141
1013	/*****************************************************************************/	1142	/*****************************************************************************/
1014		1143
1015	void inline_speed	1144	/* used to prepare libev internal fd's */
		1145	/* this is not fork-safe */
		1146	inline_speed void
1016	fd_intern (int fd)	1147	fd_intern (int fd)
1017	{	1148	{
1018	#ifdef _WIN32	1149	#ifdef _WIN32
1019	unsigned long arg = 1;	1150	unsigned long arg = 1;
1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1151	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1025	}	1156	}
1026		1157
1027	static void noinline	1158	static void noinline
1028	evpipe_init (EV_P)	1159	evpipe_init (EV_P)
1029	{	1160	{
1030	if (!ev_is_active (&pipeev))	1161	if (!ev_is_active (&pipe_w))
1031	{	1162	{
1032	#if EV_USE_EVENTFD	1163	#if EV_USE_EVENTFD
		1164	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1165	if (evfd < 0 && errno == EINVAL)
1033	if ((evfd = eventfd (0, 0)) >= 0)	1166	evfd = eventfd (0, 0);
		1167
		1168	if (evfd >= 0)
1034	{	1169	{
1035	evpipe [0] = -1;	1170	evpipe [0] = -1;
1036	fd_intern (evfd);	1171	fd_intern (evfd); /* doing it twice doesn't hurt */
1037	ev_io_set (&pipeev, evfd, EV_READ);	1172	ev_io_set (&pipe_w, evfd, EV_READ);
1038	}	1173	}
1039	else	1174	else
1040	#endif	1175	#endif
1041	{	1176	{
1042	while (pipe (evpipe))	1177	while (pipe (evpipe))
1043	ev_syserr ("(libev) error creating signal/async pipe");	1178	ev_syserr ("(libev) error creating signal/async pipe");
1044		1179
1045	fd_intern (evpipe [0]);	1180	fd_intern (evpipe [0]);
1046	fd_intern (evpipe [1]);	1181	fd_intern (evpipe [1]);
1047	ev_io_set (&pipeev, evpipe [0], EV_READ);	1182	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048	}	1183	}
1049		1184
1050	ev_io_start (EV_A_ &pipeev);	1185	ev_io_start (EV_A_ &pipe_w);
1051	ev_unref (EV_A); /* watcher should not keep loop alive */	1186	ev_unref (EV_A); /* watcher should not keep loop alive */
1052	}	1187	}
1053	}	1188	}
1054		1189
1055	void inline_size	1190	inline_size void
1056	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1191	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057	{	1192	{
1058	if (!*flag)	1193	if (!*flag)
1059	{	1194	{
1060	int old_errno = errno; /* save errno because write might clobber it */	1195	int old_errno = errno; /* save errno because write might clobber it */
…		…
1073		1208
1074	errno = old_errno;	1209	errno = old_errno;
1075	}	1210	}
1076	}	1211	}
1077		1212
		1213	/* called whenever the libev signal pipe */
		1214	/* got some events (signal, async) */
1078	static void	1215	static void
1079	pipecb (EV_P_ ev_io *iow, int revents)	1216	pipecb (EV_P_ ev_io *iow, int revents)
1080	{	1217	{
1081	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
1082	if (evfd >= 0)	1219	if (evfd >= 0)
…		…
1094	if (gotsig && ev_is_default_loop (EV_A))	1231	if (gotsig && ev_is_default_loop (EV_A))
1095	{	1232	{
1096	int signum;	1233	int signum;
1097	gotsig = 0;	1234	gotsig = 0;
1098		1235
1099	for (signum = signalmax; signum--; )	1236	for (signum = EV_NSIG - 1; signum--; )
1100	if (signals [signum].gotsig)	1237	if (signals [signum].gotsig)
1101	ev_feed_signal_event (EV_A_ signum + 1);	1238	ev_feed_signal_event (EV_A_ signum + 1);
1102	}	1239	}
1103		1240
1104	#if EV_ASYNC_ENABLE	1241	#if EV_ASYNC_ENABLE
…		…
1121		1258
1122	static void	1259	static void
1123	ev_sighandler (int signum)	1260	ev_sighandler (int signum)
1124	{	1261	{
1125	#if EV_MULTIPLICITY	1262	#if EV_MULTIPLICITY
1126	struct ev_loop *loop = &default_loop_struct;	1263	EV_P = signals [signum - 1].loop;
1127	#endif	1264	#endif
1128		1265
1129	#if _WIN32	1266	#if _WIN32
1130	signal (signum, ev_sighandler);	1267	signal (signum, ev_sighandler);
1131	#endif	1268	#endif
…		…
1141		1278
1142	#if EV_MULTIPLICITY	1279	#if EV_MULTIPLICITY
1143	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1280	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
1144	#endif	1281	#endif
1145		1282
		1283	if (signum <= 0 || signum > EV_NSIG)
		1284	return;
		1285
1146	--signum;	1286	--signum;
1147
1148	if (signum < 0 || signum >= signalmax)
1149	return;
1150		1287
1151	signals [signum].gotsig = 0;	1288	signals [signum].gotsig = 0;
1152		1289
1153	for (w = signals [signum].head; w; w = w->next)	1290	for (w = signals [signum].head; w; w = w->next)
1154	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1291	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155	}	1292	}
1156		1293
		1294	#if EV_USE_SIGNALFD
		1295	static void
		1296	sigfdcb (EV_P_ ev_io *iow, int revents)
		1297	{
		1298	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1299
		1300	for (;;)
		1301	{
		1302	ssize_t res = read (sigfd, si, sizeof (si));
		1303
		1304	/* not ISO-C, as res might be -1, but works with SuS */
		1305	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1306	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1307
		1308	if (res < (ssize_t)sizeof (si))
		1309	break;
		1310	}
		1311	}
		1312	#endif
		1313
1157	/*****************************************************************************/	1314	/*****************************************************************************/
1158		1315
1159	static WL childs [EV_PID_HASHSIZE];	1316	static WL childs [EV_PID_HASHSIZE];
1160		1317
1161	#ifndef _WIN32	1318	#ifndef _WIN32
…		…
1164		1321
1165	#ifndef WIFCONTINUED	1322	#ifndef WIFCONTINUED
1166	# define WIFCONTINUED(status) 0	1323	# define WIFCONTINUED(status) 0
1167	#endif	1324	#endif
1168		1325
1169	void inline_speed	1326	/* handle a single child status event */
		1327	inline_speed void
1170	child_reap (EV_P_ int chain, int pid, int status)	1328	child_reap (EV_P_ int chain, int pid, int status)
1171	{	1329	{
1172	ev_child *w;	1330	ev_child *w;
1173	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1331	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174		1332
…		…
1187		1345
1188	#ifndef WCONTINUED	1346	#ifndef WCONTINUED
1189	# define WCONTINUED 0	1347	# define WCONTINUED 0
1190	#endif	1348	#endif
1191		1349
		1350	/* called on sigchld etc., calls waitpid */
1192	static void	1351	static void
1193	childcb (EV_P_ ev_signal *sw, int revents)	1352	childcb (EV_P_ ev_signal *sw, int revents)
1194	{	1353	{
1195	int pid, status;	1354	int pid, status;
1196		1355
…		…
1303	ev_backend (EV_P)	1462	ev_backend (EV_P)
1304	{	1463	{
1305	return backend;	1464	return backend;
1306	}	1465	}
1307		1466
		1467	#if EV_MINIMAL < 2
1308	unsigned int	1468	unsigned int
1309	ev_loop_count (EV_P)	1469	ev_loop_count (EV_P)
1310	{	1470	{
1311	return loop_count;	1471	return loop_count;
1312	}	1472	}
1313		1473
		1474	unsigned int
		1475	ev_loop_depth (EV_P)
		1476	{
		1477	return loop_depth;
		1478	}
		1479
1314	void	1480	void
1315	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1481	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316	{	1482	{
1317	io_blocktime = interval;	1483	io_blocktime = interval;
1318	}	1484	}
…		…
1321	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1487	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322	{	1488	{
1323	timeout_blocktime = interval;	1489	timeout_blocktime = interval;
1324	}	1490	}
1325		1491
		1492	void
		1493	ev_set_userdata (EV_P_ void *data)
		1494	{
		1495	userdata = data;
		1496	}
		1497
		1498	void *
		1499	ev_userdata (EV_P)
		1500	{
		1501	return userdata;
		1502	}
		1503
		1504	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1505	{
		1506	invoke_cb = invoke_pending_cb;
		1507	}
		1508
		1509	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1510	{
		1511	release_cb = release;
		1512	acquire_cb = acquire;
		1513	}
		1514	#endif
		1515
		1516	/* initialise a loop structure, must be zero-initialised */
1326	static void noinline	1517	static void noinline
1327	loop_init (EV_P_ unsigned int flags)	1518	loop_init (EV_P_ unsigned int flags)
1328	{	1519	{
1329	if (!backend)	1520	if (!backend)
1330	{	1521	{
…		…
1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1537	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347	have_monotonic = 1;	1538	have_monotonic = 1;
1348	}	1539	}
1349	#endif	1540	#endif
1350		1541
		1542	/* pid check not overridable via env */
		1543	#ifndef _WIN32
		1544	if (flags & EVFLAG_FORKCHECK)
		1545	curpid = getpid ();
		1546	#endif
		1547
		1548	if (!(flags & EVFLAG_NOENV)
		1549	&& !enable_secure ()
		1550	&& getenv ("LIBEV_FLAGS"))
		1551	flags = atoi (getenv ("LIBEV_FLAGS"));
		1552
1351	ev_rt_now = ev_time ();	1553	ev_rt_now = ev_time ();
1352	mn_now = get_clock ();	1554	mn_now = get_clock ();
1353	now_floor = mn_now;	1555	now_floor = mn_now;
1354	rtmn_diff = ev_rt_now - mn_now;	1556	rtmn_diff = ev_rt_now - mn_now;
		1557	#if EV_MINIMAL < 2
		1558	invoke_cb = ev_invoke_pending;
		1559	#endif
1355		1560
1356	io_blocktime = 0.;	1561	io_blocktime = 0.;
1357	timeout_blocktime = 0.;	1562	timeout_blocktime = 0.;
1358	backend = 0;	1563	backend = 0;
1359	backend_fd = -1;	1564	backend_fd = -1;
1360	gotasync = 0;	1565	gotasync = 0;
1361	#if EV_USE_INOTIFY	1566	#if EV_USE_INOTIFY
1362	fs_fd = -2;	1567	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363	#endif	1568	#endif
1364		1569	#if EV_USE_SIGNALFD
1365	/* pid check not overridable via env */	1570	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1366	#ifndef _WIN32
1367	if (flags & EVFLAG_FORKCHECK)
1368	curpid = getpid ();
1369	#endif	1571	#endif
1370
1371	if (!(flags & EVFLAG_NOENV)
1372	&& !enable_secure ()
1373	&& getenv ("LIBEV_FLAGS"))
1374	flags = atoi (getenv ("LIBEV_FLAGS"));
1375		1572
1376	if (!(flags & 0x0000ffffU))	1573	if (!(flags & 0x0000ffffU))
1377	flags |= ev_recommended_backends ();	1574	flags |= ev_recommended_backends ();
1378		1575
1379	#if EV_USE_PORT	1576	#if EV_USE_PORT
…		…
1390	#endif	1587	#endif
1391	#if EV_USE_SELECT	1588	#if EV_USE_SELECT
1392	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1589	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393	#endif	1590	#endif
1394		1591
		1592	ev_prepare_init (&pending_w, pendingcb);
		1593
1395	ev_init (&pipeev, pipecb);	1594	ev_init (&pipe_w, pipecb);
1396	ev_set_priority (&pipeev, EV_MAXPRI);	1595	ev_set_priority (&pipe_w, EV_MAXPRI);
1397	}	1596	}
1398	}	1597	}
1399		1598
		1599	/* free up a loop structure */
1400	static void noinline	1600	static void noinline
1401	loop_destroy (EV_P)	1601	loop_destroy (EV_P)
1402	{	1602	{
1403	int i;	1603	int i;
1404		1604
1405	if (ev_is_active (&pipeev))	1605	if (ev_is_active (&pipe_w))
1406	{	1606	{
1407	ev_ref (EV_A); /* signal watcher */	1607	/*ev_ref (EV_A);*/
1408	ev_io_stop (EV_A_ &pipeev);	1608	/*ev_io_stop (EV_A_ &pipe_w);*/
1409		1609
1410	#if EV_USE_EVENTFD	1610	#if EV_USE_EVENTFD
1411	if (evfd >= 0)	1611	if (evfd >= 0)
1412	close (evfd);	1612	close (evfd);
1413	#endif	1613	#endif
…		…
1417	close (evpipe [0]);	1617	close (evpipe [0]);
1418	close (evpipe [1]);	1618	close (evpipe [1]);
1419	}	1619	}
1420	}	1620	}
1421		1621
		1622	#if EV_USE_SIGNALFD
		1623	if (ev_is_active (&sigfd_w))
		1624	{
		1625	/*ev_ref (EV_A);*/
		1626	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1627
		1628	close (sigfd);
		1629	}
		1630	#endif
		1631
1422	#if EV_USE_INOTIFY	1632	#if EV_USE_INOTIFY
1423	if (fs_fd >= 0)	1633	if (fs_fd >= 0)
1424	close (fs_fd);	1634	close (fs_fd);
1425	#endif	1635	#endif
1426		1636
…		…
1449	#if EV_IDLE_ENABLE	1659	#if EV_IDLE_ENABLE
1450	array_free (idle, [i]);	1660	array_free (idle, [i]);
1451	#endif	1661	#endif
1452	}	1662	}
1453		1663
1454	ev_free (anfds); anfdmax = 0;	1664	ev_free (anfds); anfds = 0; anfdmax = 0;
1455		1665
1456	/* have to use the microsoft-never-gets-it-right macro */	1666	/* have to use the microsoft-never-gets-it-right macro */
		1667	array_free (rfeed, EMPTY);
1457	array_free (fdchange, EMPTY);	1668	array_free (fdchange, EMPTY);
1458	array_free (timer, EMPTY);	1669	array_free (timer, EMPTY);
1459	#if EV_PERIODIC_ENABLE	1670	#if EV_PERIODIC_ENABLE
1460	array_free (periodic, EMPTY);	1671	array_free (periodic, EMPTY);
1461	#endif	1672	#endif
…		…
1470		1681
1471	backend = 0;	1682	backend = 0;
1472	}	1683	}
1473		1684
1474	#if EV_USE_INOTIFY	1685	#if EV_USE_INOTIFY
1475	void inline_size infy_fork (EV_P);	1686	inline_size void infy_fork (EV_P);
1476	#endif	1687	#endif
1477		1688
1478	void inline_size	1689	inline_size void
1479	loop_fork (EV_P)	1690	loop_fork (EV_P)
1480	{	1691	{
1481	#if EV_USE_PORT	1692	#if EV_USE_PORT
1482	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1693	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483	#endif	1694	#endif
…		…
1489	#endif	1700	#endif
1490	#if EV_USE_INOTIFY	1701	#if EV_USE_INOTIFY
1491	infy_fork (EV_A);	1702	infy_fork (EV_A);
1492	#endif	1703	#endif
1493		1704
1494	if (ev_is_active (&pipeev))	1705	if (ev_is_active (&pipe_w))
1495	{	1706	{
1496	/* this "locks" the handlers against writing to the pipe */	1707	/* this "locks" the handlers against writing to the pipe */
1497	/* while we modify the fd vars */	1708	/* while we modify the fd vars */
1498	gotsig = 1;	1709	gotsig = 1;
1499	#if EV_ASYNC_ENABLE	1710	#if EV_ASYNC_ENABLE
1500	gotasync = 1;	1711	gotasync = 1;
1501	#endif	1712	#endif
1502		1713
1503	ev_ref (EV_A);	1714	ev_ref (EV_A);
1504	ev_io_stop (EV_A_ &pipeev);	1715	ev_io_stop (EV_A_ &pipe_w);
1505		1716
1506	#if EV_USE_EVENTFD	1717	#if EV_USE_EVENTFD
1507	if (evfd >= 0)	1718	if (evfd >= 0)
1508	close (evfd);	1719	close (evfd);
1509	#endif	1720	#endif
…		…
1514	close (evpipe [1]);	1725	close (evpipe [1]);
1515	}	1726	}
1516		1727
1517	evpipe_init (EV_A);	1728	evpipe_init (EV_A);
1518	/* now iterate over everything, in case we missed something */	1729	/* now iterate over everything, in case we missed something */
1519	pipecb (EV_A_ &pipeev, EV_READ);	1730	pipecb (EV_A_ &pipe_w, EV_READ);
1520	}	1731	}
1521		1732
1522	postfork = 0;	1733	postfork = 0;
1523	}	1734	}
1524		1735
1525	#if EV_MULTIPLICITY	1736	#if EV_MULTIPLICITY
1526		1737
1527	struct ev_loop *	1738	struct ev_loop *
1528	ev_loop_new (unsigned int flags)	1739	ev_loop_new (unsigned int flags)
1529	{	1740	{
1530	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1741	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531		1742
1532	memset (loop, 0, sizeof (struct ev_loop));	1743	memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534	loop_init (EV_A_ flags);	1744	loop_init (EV_A_ flags);
1535		1745
1536	if (ev_backend (EV_A))	1746	if (ev_backend (EV_A))
1537	return loop;	1747	return EV_A;
1538		1748
1539	return 0;	1749	return 0;
1540	}	1750	}
1541		1751
1542	void	1752	void
…		…
1549	void	1759	void
1550	ev_loop_fork (EV_P)	1760	ev_loop_fork (EV_P)
1551	{	1761	{
1552	postfork = 1; /* must be in line with ev_default_fork */	1762	postfork = 1; /* must be in line with ev_default_fork */
1553	}	1763	}
		1764	#endif /* multiplicity */
1554		1765
1555	#if EV_VERIFY	1766	#if EV_VERIFY
1556	static void noinline	1767	static void noinline
1557	verify_watcher (EV_P_ W w)	1768	verify_watcher (EV_P_ W w)
1558	{	1769	{
…		…
1586	verify_watcher (EV_A_ ws [cnt]);	1797	verify_watcher (EV_A_ ws [cnt]);
1587	}	1798	}
1588	}	1799	}
1589	#endif	1800	#endif
1590		1801
		1802	#if EV_MINIMAL < 2
1591	void	1803	void
1592	ev_loop_verify (EV_P)	1804	ev_loop_verify (EV_P)
1593	{	1805	{
1594	#if EV_VERIFY	1806	#if EV_VERIFY
1595	int i;	1807	int i;
…		…
1644	assert (checkmax >= checkcnt);	1856	assert (checkmax >= checkcnt);
1645	array_verify (EV_A_ (W *)checks, checkcnt);	1857	array_verify (EV_A_ (W *)checks, checkcnt);
1646		1858
1647	# if 0	1859	# if 0
1648	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1860	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1649	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1861	for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig)
1650	# endif	1862	# endif
1651	#endif	1863	#endif
1652	}	1864	}
1653		1865	#endif
1654	#endif /* multiplicity */
1655		1866
1656	#if EV_MULTIPLICITY	1867	#if EV_MULTIPLICITY
1657	struct ev_loop *	1868	struct ev_loop *
1658	ev_default_loop_init (unsigned int flags)	1869	ev_default_loop_init (unsigned int flags)
1659	#else	1870	#else
…		…
1662	#endif	1873	#endif
1663	{	1874	{
1664	if (!ev_default_loop_ptr)	1875	if (!ev_default_loop_ptr)
1665	{	1876	{
1666	#if EV_MULTIPLICITY	1877	#if EV_MULTIPLICITY
1667	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1878	EV_P = ev_default_loop_ptr = &default_loop_struct;
1668	#else	1879	#else
1669	ev_default_loop_ptr = 1;	1880	ev_default_loop_ptr = 1;
1670	#endif	1881	#endif
1671		1882
1672	loop_init (EV_A_ flags);	1883	loop_init (EV_A_ flags);
…		…
1689		1900
1690	void	1901	void
1691	ev_default_destroy (void)	1902	ev_default_destroy (void)
1692	{	1903	{
1693	#if EV_MULTIPLICITY	1904	#if EV_MULTIPLICITY
1694	struct ev_loop *loop = ev_default_loop_ptr;	1905	EV_P = ev_default_loop_ptr;
1695	#endif	1906	#endif
1696		1907
1697	ev_default_loop_ptr = 0;	1908	ev_default_loop_ptr = 0;
1698		1909
1699	#ifndef _WIN32	1910	#ifndef _WIN32
…		…
1706		1917
1707	void	1918	void
1708	ev_default_fork (void)	1919	ev_default_fork (void)
1709	{	1920	{
1710	#if EV_MULTIPLICITY	1921	#if EV_MULTIPLICITY
1711	struct ev_loop *loop = ev_default_loop_ptr;	1922	EV_P = ev_default_loop_ptr;
1712	#endif	1923	#endif
1713		1924
1714	postfork = 1; /* must be in line with ev_loop_fork */	1925	postfork = 1; /* must be in line with ev_loop_fork */
1715	}	1926	}
1716		1927
…		…
1720	ev_invoke (EV_P_ void *w, int revents)	1931	ev_invoke (EV_P_ void *w, int revents)
1721	{	1932	{
1722	EV_CB_INVOKE ((W)w, revents);	1933	EV_CB_INVOKE ((W)w, revents);
1723	}	1934	}
1724		1935
1725	void inline_speed	1936	unsigned int
1726	call_pending (EV_P)	1937	ev_pending_count (EV_P)
		1938	{
		1939	int pri;
		1940	unsigned int count = 0;
		1941
		1942	for (pri = NUMPRI; pri--; )
		1943	count += pendingcnt [pri];
		1944
		1945	return count;
		1946	}
		1947
		1948	void noinline
		1949	ev_invoke_pending (EV_P)
1727	{	1950	{
1728	int pri;	1951	int pri;
1729		1952
1730	for (pri = NUMPRI; pri--; )	1953	for (pri = NUMPRI; pri--; )
1731	while (pendingcnt [pri])	1954	while (pendingcnt [pri])
1732	{	1955	{
1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1956	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734		1957
1735	if (expect_true (p->w))
1736	{
1737	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	1958	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1959	/* ^ this is no longer true, as pending_w could be here */
1738		1960
1739	p->w->pending = 0;	1961	p->w->pending = 0;
1740	EV_CB_INVOKE (p->w, p->events);	1962	EV_CB_INVOKE (p->w, p->events);
1741	EV_FREQUENT_CHECK;	1963	EV_FREQUENT_CHECK;
1742	}
1743	}	1964	}
1744	}	1965	}
1745		1966
1746	#if EV_IDLE_ENABLE	1967	#if EV_IDLE_ENABLE
1747	void inline_size	1968	/* make idle watchers pending. this handles the "call-idle */
		1969	/* only when higher priorities are idle" logic */
		1970	inline_size void
1748	idle_reify (EV_P)	1971	idle_reify (EV_P)
1749	{	1972	{
1750	if (expect_false (idleall))	1973	if (expect_false (idleall))
1751	{	1974	{
1752	int pri;	1975	int pri;
…		…
1764	}	1987	}
1765	}	1988	}
1766	}	1989	}
1767	#endif	1990	#endif
1768		1991
1769	void inline_size	1992	/* make timers pending */
		1993	inline_size void
1770	timers_reify (EV_P)	1994	timers_reify (EV_P)
1771	{	1995	{
1772	EV_FREQUENT_CHECK;	1996	EV_FREQUENT_CHECK;
1773		1997
1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	1998	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775	{	1999	{
1776	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2000	do
1777
1778	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
1779
1780	/* first reschedule or stop timer */
1781	if (w->repeat)
1782	{	2001	{
		2002	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2003
		2004	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2005
		2006	/* first reschedule or stop timer */
		2007	if (w->repeat)
		2008	{
1783	ev_at (w) += w->repeat;	2009	ev_at (w) += w->repeat;
1784	if (ev_at (w) < mn_now)	2010	if (ev_at (w) < mn_now)
1785	ev_at (w) = mn_now;	2011	ev_at (w) = mn_now;
1786		2012
1787	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2013	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788		2014
1789	ANHE_at_cache (timers [HEAP0]);	2015	ANHE_at_cache (timers [HEAP0]);
1790	downheap (timers, timercnt, HEAP0);	2016	downheap (timers, timercnt, HEAP0);
		2017	}
		2018	else
		2019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2020
		2021	EV_FREQUENT_CHECK;
		2022	feed_reverse (EV_A_ (W)w);
1791	}	2023	}
1792	else	2024	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794		2025
1795	EV_FREQUENT_CHECK;
1796	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2026	feed_reverse_done (EV_A_ EV_TIMEOUT);
1797	}	2027	}
1798	}	2028	}
1799		2029
1800	#if EV_PERIODIC_ENABLE	2030	#if EV_PERIODIC_ENABLE
1801	void inline_size	2031	/* make periodics pending */
		2032	inline_size void
1802	periodics_reify (EV_P)	2033	periodics_reify (EV_P)
1803	{	2034	{
1804	EV_FREQUENT_CHECK;	2035	EV_FREQUENT_CHECK;
1805		2036
1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2037	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807	{	2038	{
1808	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2039	int feed_count = 0;
1809		2040
1810	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/	2041	do
1811
1812	/* first reschedule or stop timer */
1813	if (w->reschedule_cb)
1814	{	2042	{
		2043	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2044
		2045	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2046
		2047	/* first reschedule or stop timer */
		2048	if (w->reschedule_cb)
		2049	{
1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2050	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816		2051
1817	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2052	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818		2053
1819	ANHE_at_cache (periodics [HEAP0]);	2054	ANHE_at_cache (periodics [HEAP0]);
1820	downheap (periodics, periodiccnt, HEAP0);	2055	downheap (periodics, periodiccnt, HEAP0);
		2056	}
		2057	else if (w->interval)
		2058	{
		2059	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2060	/* if next trigger time is not sufficiently in the future, put it there */
		2061	/* this might happen because of floating point inexactness */
		2062	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2063	{
		2064	ev_at (w) += w->interval;
		2065
		2066	/* if interval is unreasonably low we might still have a time in the past */
		2067	/* so correct this. this will make the periodic very inexact, but the user */
		2068	/* has effectively asked to get triggered more often than possible */
		2069	if (ev_at (w) < ev_rt_now)
		2070	ev_at (w) = ev_rt_now;
		2071	}
		2072
		2073	ANHE_at_cache (periodics [HEAP0]);
		2074	downheap (periodics, periodiccnt, HEAP0);
		2075	}
		2076	else
		2077	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2078
		2079	EV_FREQUENT_CHECK;
		2080	feed_reverse (EV_A_ (W)w);
1821	}	2081	}
1822	else if (w->interval)	2082	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1823	{
1824	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1825	/* if next trigger time is not sufficiently in the future, put it there */
1826	/* this might happen because of floating point inexactness */
1827	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1828	{
1829	ev_at (w) += w->interval;
1830		2083
1831	/* if interval is unreasonably low we might still have a time in the past */
1832	/* so correct this. this will make the periodic very inexact, but the user */
1833	/* has effectively asked to get triggered more often than possible */
1834	if (ev_at (w) < ev_rt_now)
1835	ev_at (w) = ev_rt_now;
1836	}
1837
1838	ANHE_at_cache (periodics [HEAP0]);
1839	downheap (periodics, periodiccnt, HEAP0);
1840	}
1841	else
1842	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1843
1844	EV_FREQUENT_CHECK;
1845	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2084	feed_reverse_done (EV_A_ EV_PERIODIC);
1846	}	2085	}
1847	}	2086	}
1848		2087
		2088	/* simply recalculate all periodics */
		2089	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1849	static void noinline	2090	static void noinline
1850	periodics_reschedule (EV_P)	2091	periodics_reschedule (EV_P)
1851	{	2092	{
1852	int i;	2093	int i;
1853		2094
…		…
1866		2107
1867	reheap (periodics, periodiccnt);	2108	reheap (periodics, periodiccnt);
1868	}	2109	}
1869	#endif	2110	#endif
1870		2111
1871	void inline_speed	2112	/* adjust all timers by a given offset */
		2113	static void noinline
		2114	timers_reschedule (EV_P_ ev_tstamp adjust)
		2115	{
		2116	int i;
		2117
		2118	for (i = 0; i < timercnt; ++i)
		2119	{
		2120	ANHE *he = timers + i + HEAP0;
		2121	ANHE_w (*he)->at += adjust;
		2122	ANHE_at_cache (*he);
		2123	}
		2124	}
		2125
		2126	/* fetch new monotonic and realtime times from the kernel */
		2127	/* also detetc if there was a timejump, and act accordingly */
		2128	inline_speed void
1872	time_update (EV_P_ ev_tstamp max_block)	2129	time_update (EV_P_ ev_tstamp max_block)
1873	{	2130	{
1874	int i;
1875
1876	#if EV_USE_MONOTONIC	2131	#if EV_USE_MONOTONIC
1877	if (expect_true (have_monotonic))	2132	if (expect_true (have_monotonic))
1878	{	2133	{
		2134	int i;
1879	ev_tstamp odiff = rtmn_diff;	2135	ev_tstamp odiff = rtmn_diff;
1880		2136
1881	mn_now = get_clock ();	2137	mn_now = get_clock ();
1882		2138
1883	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2139	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1909	ev_rt_now = ev_time ();	2165	ev_rt_now = ev_time ();
1910	mn_now = get_clock ();	2166	mn_now = get_clock ();
1911	now_floor = mn_now;	2167	now_floor = mn_now;
1912	}	2168	}
1913		2169
		2170	/* no timer adjustment, as the monotonic clock doesn't jump */
		2171	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914	# if EV_PERIODIC_ENABLE	2172	# if EV_PERIODIC_ENABLE
1915	periodics_reschedule (EV_A);	2173	periodics_reschedule (EV_A);
1916	# endif	2174	# endif
1917	/* no timer adjustment, as the monotonic clock doesn't jump */
1918	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919	}	2175	}
1920	else	2176	else
1921	#endif	2177	#endif
1922	{	2178	{
1923	ev_rt_now = ev_time ();	2179	ev_rt_now = ev_time ();
1924		2180
1925	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2181	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926	{	2182	{
		2183	/* adjust timers. this is easy, as the offset is the same for all of them */
		2184	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927	#if EV_PERIODIC_ENABLE	2185	#if EV_PERIODIC_ENABLE
1928	periodics_reschedule (EV_A);	2186	periodics_reschedule (EV_A);
1929	#endif	2187	#endif
1930	/* adjust timers. this is easy, as the offset is the same for all of them */
1931	for (i = 0; i < timercnt; ++i)
1932	{
1933	ANHE *he = timers + i + HEAP0;
1934	ANHE_w (*he)->at += ev_rt_now - mn_now;
1935	ANHE_at_cache (*he);
1936	}
1937	}	2188	}
1938		2189
1939	mn_now = ev_rt_now;	2190	mn_now = ev_rt_now;
1940	}	2191	}
1941	}	2192	}
1942		2193
1943	void	2194	void
1944	ev_ref (EV_P)
1945	{
1946	++activecnt;
1947	}
1948
1949	void
1950	ev_unref (EV_P)
1951	{
1952	--activecnt;
1953	}
1954
1955	void
1956	ev_now_update (EV_P)
1957	{
1958	time_update (EV_A_ 1e100);
1959	}
1960
1961	static int loop_done;
1962
1963	void
1964	ev_loop (EV_P_ int flags)	2195	ev_loop (EV_P_ int flags)
1965	{	2196	{
		2197	#if EV_MINIMAL < 2
		2198	++loop_depth;
		2199	#endif
		2200
		2201	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2202
1966	loop_done = EVUNLOOP_CANCEL;	2203	loop_done = EVUNLOOP_CANCEL;
1967		2204
1968	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2205	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969		2206
1970	do	2207	do
1971	{	2208	{
1972	#if EV_VERIFY >= 2	2209	#if EV_VERIFY >= 2
1973	ev_loop_verify (EV_A);	2210	ev_loop_verify (EV_A);
…		…
1986	/* we might have forked, so queue fork handlers */	2223	/* we might have forked, so queue fork handlers */
1987	if (expect_false (postfork))	2224	if (expect_false (postfork))
1988	if (forkcnt)	2225	if (forkcnt)
1989	{	2226	{
1990	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2227	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991	call_pending (EV_A);	2228	EV_INVOKE_PENDING;
1992	}	2229	}
1993	#endif	2230	#endif
1994		2231
1995	/* queue prepare watchers (and execute them) */	2232	/* queue prepare watchers (and execute them) */
1996	if (expect_false (preparecnt))	2233	if (expect_false (preparecnt))
1997	{	2234	{
1998	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2235	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999	call_pending (EV_A);	2236	EV_INVOKE_PENDING;
2000	}	2237	}
2001		2238
2002	if (expect_false (!activecnt))	2239	if (expect_false (loop_done))
2003	break;	2240	break;
2004		2241
2005	/* we might have forked, so reify kernel state if necessary */	2242	/* we might have forked, so reify kernel state if necessary */
2006	if (expect_false (postfork))	2243	if (expect_false (postfork))
2007	loop_fork (EV_A);	2244	loop_fork (EV_A);
…		…
2014	ev_tstamp waittime = 0.;	2251	ev_tstamp waittime = 0.;
2015	ev_tstamp sleeptime = 0.;	2252	ev_tstamp sleeptime = 0.;
2016		2253
2017	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2254	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2018	{	2255	{
		2256	/* remember old timestamp for io_blocktime calculation */
		2257	ev_tstamp prev_mn_now = mn_now;
		2258
2019	/* update time to cancel out callback processing overhead */	2259	/* update time to cancel out callback processing overhead */
2020	time_update (EV_A_ 1e100);	2260	time_update (EV_A_ 1e100);
2021		2261
2022	waittime = MAX_BLOCKTIME;	2262	waittime = MAX_BLOCKTIME;
2023		2263
…		…
2033	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2273	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2034	if (waittime > to) waittime = to;	2274	if (waittime > to) waittime = to;
2035	}	2275	}
2036	#endif	2276	#endif
2037		2277
		2278	/* don't let timeouts decrease the waittime below timeout_blocktime */
2038	if (expect_false (waittime < timeout_blocktime))	2279	if (expect_false (waittime < timeout_blocktime))
2039	waittime = timeout_blocktime;	2280	waittime = timeout_blocktime;
2040		2281
2041	sleeptime = waittime - backend_fudge;	2282	/* extra check because io_blocktime is commonly 0 */
2042
2043	if (expect_true (sleeptime > io_blocktime))	2283	if (expect_false (io_blocktime))
2044	sleeptime = io_blocktime;
2045
2046	if (sleeptime)
2047	{	2284	{
		2285	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2286
		2287	if (sleeptime > waittime - backend_fudge)
		2288	sleeptime = waittime - backend_fudge;
		2289
		2290	if (expect_true (sleeptime > 0.))
		2291	{
2048	ev_sleep (sleeptime);	2292	ev_sleep (sleeptime);
2049	waittime -= sleeptime;	2293	waittime -= sleeptime;
		2294	}
2050	}	2295	}
2051	}	2296	}
2052		2297
		2298	#if EV_MINIMAL < 2
2053	++loop_count;	2299	++loop_count;
		2300	#endif
		2301	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2054	backend_poll (EV_A_ waittime);	2302	backend_poll (EV_A_ waittime);
		2303	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2055		2304
2056	/* update ev_rt_now, do magic */	2305	/* update ev_rt_now, do magic */
2057	time_update (EV_A_ waittime + sleeptime);	2306	time_update (EV_A_ waittime + sleeptime);
2058	}	2307	}
2059		2308
…		…
2070		2319
2071	/* queue check watchers, to be executed first */	2320	/* queue check watchers, to be executed first */
2072	if (expect_false (checkcnt))	2321	if (expect_false (checkcnt))
2073	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2322	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2074		2323
2075	call_pending (EV_A);	2324	EV_INVOKE_PENDING;
2076	}	2325	}
2077	while (expect_true (	2326	while (expect_true (
2078	activecnt	2327	activecnt
2079	&& !loop_done	2328	&& !loop_done
2080	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2329	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2081	));	2330	));
2082		2331
2083	if (loop_done == EVUNLOOP_ONE)	2332	if (loop_done == EVUNLOOP_ONE)
2084	loop_done = EVUNLOOP_CANCEL;	2333	loop_done = EVUNLOOP_CANCEL;
		2334
		2335	#if EV_MINIMAL < 2
		2336	--loop_depth;
		2337	#endif
2085	}	2338	}
2086		2339
2087	void	2340	void
2088	ev_unloop (EV_P_ int how)	2341	ev_unloop (EV_P_ int how)
2089	{	2342	{
2090	loop_done = how;	2343	loop_done = how;
2091	}	2344	}
2092		2345
		2346	void
		2347	ev_ref (EV_P)
		2348	{
		2349	++activecnt;
		2350	}
		2351
		2352	void
		2353	ev_unref (EV_P)
		2354	{
		2355	--activecnt;
		2356	}
		2357
		2358	void
		2359	ev_now_update (EV_P)
		2360	{
		2361	time_update (EV_A_ 1e100);
		2362	}
		2363
		2364	void
		2365	ev_suspend (EV_P)
		2366	{
		2367	ev_now_update (EV_A);
		2368	}
		2369
		2370	void
		2371	ev_resume (EV_P)
		2372	{
		2373	ev_tstamp mn_prev = mn_now;
		2374
		2375	ev_now_update (EV_A);
		2376	timers_reschedule (EV_A_ mn_now - mn_prev);
		2377	#if EV_PERIODIC_ENABLE
		2378	/* TODO: really do this? */
		2379	periodics_reschedule (EV_A);
		2380	#endif
		2381	}
		2382
2093	/*****************************************************************************/	2383	/*****************************************************************************/
		2384	/* singly-linked list management, used when the expected list length is short */
2094		2385
2095	void inline_size	2386	inline_size void
2096	wlist_add (WL *head, WL elem)	2387	wlist_add (WL *head, WL elem)
2097	{	2388	{
2098	elem->next = *head;	2389	elem->next = *head;
2099	*head = elem;	2390	*head = elem;
2100	}	2391	}
2101		2392
2102	void inline_size	2393	inline_size void
2103	wlist_del (WL *head, WL elem)	2394	wlist_del (WL *head, WL elem)
2104	{	2395	{
2105	while (*head)	2396	while (*head)
2106	{	2397	{
2107	if (*head == elem)	2398	if (*head == elem)
…		…
2112		2403
2113	head = &(*head)->next;	2404	head = &(*head)->next;
2114	}	2405	}
2115	}	2406	}
2116		2407
2117	void inline_speed	2408	/* internal, faster, version of ev_clear_pending */
		2409	inline_speed void
2118	clear_pending (EV_P_ W w)	2410	clear_pending (EV_P_ W w)
2119	{	2411	{
2120	if (w->pending)	2412	if (w->pending)
2121	{	2413	{
2122	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2414	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123	w->pending = 0;	2415	w->pending = 0;
2124	}	2416	}
2125	}	2417	}
2126		2418
2127	int	2419	int
…		…
2131	int pending = w_->pending;	2423	int pending = w_->pending;
2132		2424
2133	if (expect_true (pending))	2425	if (expect_true (pending))
2134	{	2426	{
2135	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2427	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2428	p->w = (W)&pending_w;
2136	w_->pending = 0;	2429	w_->pending = 0;
2137	p->w = 0;
2138	return p->events;	2430	return p->events;
2139	}	2431	}
2140	else	2432	else
2141	return 0;	2433	return 0;
2142	}	2434	}
2143		2435
2144	void inline_size	2436	inline_size void
2145	pri_adjust (EV_P_ W w)	2437	pri_adjust (EV_P_ W w)
2146	{	2438	{
2147	int pri = w->priority;	2439	int pri = ev_priority (w);
2148	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2440	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2441	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150	w->priority = pri;	2442	ev_set_priority (w, pri);
2151	}	2443	}
2152		2444
2153	void inline_speed	2445	inline_speed void
2154	ev_start (EV_P_ W w, int active)	2446	ev_start (EV_P_ W w, int active)
2155	{	2447	{
2156	pri_adjust (EV_A_ w);	2448	pri_adjust (EV_A_ w);
2157	w->active = active;	2449	w->active = active;
2158	ev_ref (EV_A);	2450	ev_ref (EV_A);
2159	}	2451	}
2160		2452
2161	void inline_size	2453	inline_size void
2162	ev_stop (EV_P_ W w)	2454	ev_stop (EV_P_ W w)
2163	{	2455	{
2164	ev_unref (EV_A);	2456	ev_unref (EV_A);
2165	w->active = 0;	2457	w->active = 0;
2166	}	2458	}
…		…
2174		2466
2175	if (expect_false (ev_is_active (w)))	2467	if (expect_false (ev_is_active (w)))
2176	return;	2468	return;
2177		2469
2178	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2470	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2179	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV_IOFDSET | EV_READ | EV_WRITE))));	2471	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180		2472
2181	EV_FREQUENT_CHECK;	2473	EV_FREQUENT_CHECK;
2182		2474
2183	ev_start (EV_A_ (W)w, 1);	2475	ev_start (EV_A_ (W)w, 1);
2184	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2476	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185	wlist_add (&anfds[fd].head, (WL)w);	2477	wlist_add (&anfds[fd].head, (WL)w);
2186		2478
2187	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2479	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188	w->events &= ~EV_IOFDSET;	2480	w->events &= ~EV__IOFDSET;
2189		2481
2190	EV_FREQUENT_CHECK;	2482	EV_FREQUENT_CHECK;
2191	}	2483	}
2192		2484
2193	void noinline	2485	void noinline
…		…
2286	}	2578	}
2287		2579
2288	EV_FREQUENT_CHECK;	2580	EV_FREQUENT_CHECK;
2289	}	2581	}
2290		2582
		2583	ev_tstamp
		2584	ev_timer_remaining (EV_P_ ev_timer *w)
		2585	{
		2586	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2587	}
		2588
2291	#if EV_PERIODIC_ENABLE	2589	#if EV_PERIODIC_ENABLE
2292	void noinline	2590	void noinline
2293	ev_periodic_start (EV_P_ ev_periodic *w)	2591	ev_periodic_start (EV_P_ ev_periodic *w)
2294	{	2592	{
2295	if (expect_false (ev_is_active (w)))	2593	if (expect_false (ev_is_active (w)))
…		…
2362	#endif	2660	#endif
2363		2661
2364	void noinline	2662	void noinline
2365	ev_signal_start (EV_P_ ev_signal *w)	2663	ev_signal_start (EV_P_ ev_signal *w)
2366	{	2664	{
2367	#if EV_MULTIPLICITY
2368	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2369	#endif
2370	if (expect_false (ev_is_active (w)))	2665	if (expect_false (ev_is_active (w)))
2371	return;	2666	return;
2372		2667
2373	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2668	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374		2669
2375	evpipe_init (EV_A);	2670	#if EV_MULTIPLICITY
		2671	assert (("libev: tried to attach to a signal from two different loops",
		2672	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376		2673
2377	EV_FREQUENT_CHECK;	2674	signals [w->signum - 1].loop = EV_A;
		2675	#endif
2378		2676
		2677	EV_FREQUENT_CHECK;
		2678
		2679	#if EV_USE_SIGNALFD
		2680	if (sigfd == -2)
2379	{	2681	{
2380	#ifndef _WIN32	2682	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381	sigset_t full, prev;	2683	if (sigfd < 0 && errno == EINVAL)
2382	sigfillset (&full);	2684	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383	sigprocmask (SIG_SETMASK, &full, &prev);
2384	#endif
2385		2685
2386	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2686	if (sigfd >= 0)
		2687	{
		2688	fd_intern (sigfd); /* doing it twice will not hurt */
2387		2689
2388	#ifndef _WIN32	2690	sigemptyset (&sigfd_set);
2389	sigprocmask (SIG_SETMASK, &prev, 0);	2691
2390	#endif	2692	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2693	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2694	ev_io_start (EV_A_ &sigfd_w);
		2695	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2696	}
2391	}	2697	}
		2698
		2699	if (sigfd >= 0)
		2700	{
		2701	/* TODO: check .head */
		2702	sigaddset (&sigfd_set, w->signum);
		2703	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2704
		2705	signalfd (sigfd, &sigfd_set, 0);
		2706	}
		2707	#endif
2392		2708
2393	ev_start (EV_A_ (W)w, 1);	2709	ev_start (EV_A_ (W)w, 1);
2394	wlist_add (&signals [w->signum - 1].head, (WL)w);	2710	wlist_add (&signals [w->signum - 1].head, (WL)w);
2395		2711
2396	if (!((WL)w)->next)	2712	if (!((WL)w)->next)
		2713	# if EV_USE_SIGNALFD
		2714	if (sigfd < 0) /*TODO*/
		2715	# endif
2397	{	2716	{
2398	#if _WIN32	2717	# if _WIN32
2399	signal (w->signum, ev_sighandler);	2718	signal (w->signum, ev_sighandler);
2400	#else	2719	# else
2401	struct sigaction sa;	2720	struct sigaction sa;
		2721
		2722	evpipe_init (EV_A);
		2723
2402	sa.sa_handler = ev_sighandler;	2724	sa.sa_handler = ev_sighandler;
2403	sigfillset (&sa.sa_mask);	2725	sigfillset (&sa.sa_mask);
2404	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2726	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405	sigaction (w->signum, &sa, 0);	2727	sigaction (w->signum, &sa, 0);
		2728
		2729	sigemptyset (&sa.sa_mask);
		2730	sigaddset (&sa.sa_mask, w->signum);
		2731	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2406	#endif	2732	#endif
2407	}	2733	}
2408		2734
2409	EV_FREQUENT_CHECK;	2735	EV_FREQUENT_CHECK;
2410	}	2736	}
2411		2737
2412	void noinline	2738	void noinline
…		…
2420		2746
2421	wlist_del (&signals [w->signum - 1].head, (WL)w);	2747	wlist_del (&signals [w->signum - 1].head, (WL)w);
2422	ev_stop (EV_A_ (W)w);	2748	ev_stop (EV_A_ (W)w);
2423		2749
2424	if (!signals [w->signum - 1].head)	2750	if (!signals [w->signum - 1].head)
		2751	{
		2752	#if EV_MULTIPLICITY
		2753	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2754	#endif
		2755	#if EV_USE_SIGNALFD
		2756	if (sigfd >= 0)
		2757	{
		2758	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2759	sigdelset (&sigfd_set, w->signum);
		2760	signalfd (sigfd, &sigfd_set, 0);
		2761	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2762	/*TODO: maybe unblock signal? */
		2763	}
		2764	else
		2765	#endif
2425	signal (w->signum, SIG_DFL);	2766	signal (w->signum, SIG_DFL);
		2767	}
2426		2768
2427	EV_FREQUENT_CHECK;	2769	EV_FREQUENT_CHECK;
2428	}	2770	}
2429		2771
2430	void	2772	void
…		…
2591		2933
2592	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2593	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2594	}	2936	}
2595		2937
2596	void inline_size	2938	inline_size void
2597	check_2625 (EV_P)	2939	check_2625 (EV_P)
2598	{	2940	{
2599	/* kernels < 2.6.25 are borked	2941	/* kernels < 2.6.25 are borked
2600	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2942	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601	*/	2943	*/
…		…
2614	return;	2956	return;
2615		2957
2616	fs_2625 = 1;	2958	fs_2625 = 1;
2617	}	2959	}
2618		2960
2619	void inline_size	2961	inline_size void
2620	infy_init (EV_P)	2962	infy_init (EV_P)
2621	{	2963	{
2622	if (fs_fd != -2)	2964	if (fs_fd != -2)
2623	return;	2965	return;
2624		2966
…		…
2634	ev_set_priority (&fs_w, EV_MAXPRI);	2976	ev_set_priority (&fs_w, EV_MAXPRI);
2635	ev_io_start (EV_A_ &fs_w);	2977	ev_io_start (EV_A_ &fs_w);
2636	}	2978	}
2637	}	2979	}
2638		2980
2639	void inline_size	2981	inline_size void
2640	infy_fork (EV_P)	2982	infy_fork (EV_P)
2641	{	2983	{
2642	int slot;	2984	int slot;
2643		2985
2644	if (fs_fd < 0)	2986	if (fs_fd < 0)
…		…
2910	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3252	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911	{	3253	{
2912	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3254	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913		3255
2914	{	3256	{
2915	struct ev_loop *loop = w->other;	3257	EV_P = w->other;
2916		3258
2917	while (fdchangecnt)	3259	while (fdchangecnt)
2918	{	3260	{
2919	fd_reify (EV_A);	3261	fd_reify (EV_A);
2920	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3262	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2928	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3270	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929		3271
2930	ev_embed_stop (EV_A_ w);	3272	ev_embed_stop (EV_A_ w);
2931		3273
2932	{	3274	{
2933	struct ev_loop *loop = w->other;	3275	EV_P = w->other;
2934		3276
2935	ev_loop_fork (EV_A);	3277	ev_loop_fork (EV_A);
2936	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2937	}	3279	}
2938		3280
…		…
2952	{	3294	{
2953	if (expect_false (ev_is_active (w)))	3295	if (expect_false (ev_is_active (w)))
2954	return;	3296	return;
2955		3297
2956	{	3298	{
2957	struct ev_loop *loop = w->other;	3299	EV_P = w->other;
2958	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3300	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2959	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3301	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960	}	3302	}
2961		3303
2962	EV_FREQUENT_CHECK;	3304	EV_FREQUENT_CHECK;
…		…
3146	ev_timer_set (&once->to, timeout, 0.);	3488	ev_timer_set (&once->to, timeout, 0.);
3147	ev_timer_start (EV_A_ &once->to);	3489	ev_timer_start (EV_A_ &once->to);
3148	}	3490	}
3149	}	3491	}
3150		3492
		3493	/*****************************************************************************/
		3494
		3495	#if EV_WALK_ENABLE
		3496	void
		3497	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3498	{
		3499	int i, j;
		3500	ev_watcher_list *wl, *wn;
		3501
		3502	if (types & (EV_IO | EV_EMBED))
		3503	for (i = 0; i < anfdmax; ++i)
		3504	for (wl = anfds [i].head; wl; )
		3505	{
		3506	wn = wl->next;
		3507
		3508	#if EV_EMBED_ENABLE
		3509	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3510	{
		3511	if (types & EV_EMBED)
		3512	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3513	}
		3514	else
		3515	#endif
		3516	#if EV_USE_INOTIFY
		3517	if (ev_cb ((ev_io *)wl) == infy_cb)
		3518	;
		3519	else
		3520	#endif
		3521	if ((ev_io *)wl != &pipe_w)
		3522	if (types & EV_IO)
		3523	cb (EV_A_ EV_IO, wl);
		3524
		3525	wl = wn;
		3526	}
		3527
		3528	if (types & (EV_TIMER | EV_STAT))
		3529	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3530	#if EV_STAT_ENABLE
		3531	/*TODO: timer is not always active*/
		3532	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3533	{
		3534	if (types & EV_STAT)
		3535	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3536	}
		3537	else
		3538	#endif
		3539	if (types & EV_TIMER)
		3540	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3541
		3542	#if EV_PERIODIC_ENABLE
		3543	if (types & EV_PERIODIC)
		3544	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3545	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3546	#endif
		3547
		3548	#if EV_IDLE_ENABLE
		3549	if (types & EV_IDLE)
		3550	for (j = NUMPRI; i--; )
		3551	for (i = idlecnt [j]; i--; )
		3552	cb (EV_A_ EV_IDLE, idles [j][i]);
		3553	#endif
		3554
		3555	#if EV_FORK_ENABLE
		3556	if (types & EV_FORK)
		3557	for (i = forkcnt; i--; )
		3558	if (ev_cb (forks [i]) != embed_fork_cb)
		3559	cb (EV_A_ EV_FORK, forks [i]);
		3560	#endif
		3561
		3562	#if EV_ASYNC_ENABLE
		3563	if (types & EV_ASYNC)
		3564	for (i = asynccnt; i--; )
		3565	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3566	#endif
		3567
		3568	if (types & EV_PREPARE)
		3569	for (i = preparecnt; i--; )
		3570	#if EV_EMBED_ENABLE
		3571	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3572	#endif
		3573	cb (EV_A_ EV_PREPARE, prepares [i]);
		3574
		3575	if (types & EV_CHECK)
		3576	for (i = checkcnt; i--; )
		3577	cb (EV_A_ EV_CHECK, checks [i]);
		3578
		3579	if (types & EV_SIGNAL)
		3580	for (i = 0; i < EV_NSIG - 1; ++i)
		3581	for (wl = signals [i].head; wl; )
		3582	{
		3583	wn = wl->next;
		3584	cb (EV_A_ EV_SIGNAL, wl);
		3585	wl = wn;
		3586	}
		3587
		3588	if (types & EV_CHILD)
		3589	for (i = EV_PID_HASHSIZE; i--; )
		3590	for (wl = childs [i]; wl; )
		3591	{
		3592	wn = wl->next;
		3593	cb (EV_A_ EV_CHILD, wl);
		3594	wl = wn;
		3595	}
		3596	/* EV_STAT 0x00001000 /* stat data changed */
		3597	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3598	}
		3599	#endif
		3600
3151	#if EV_MULTIPLICITY	3601	#if EV_MULTIPLICITY
3152	#include "ev_wrap.h"	3602	#include "ev_wrap.h"
3153	#endif	3603	#endif
3154		3604
3155	#ifdef __cplusplus	3605	#ifdef __cplusplus

Diff Legend

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