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Comparing libev/ev.c (file contents):
Revision 1.280 by root, Sat Mar 14 04:45:39 2009 UTC vs.
Revision 1.307 by root, Sun Jul 19 07:20:41 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	#if defined (EV_NSIG)
		193	/* use what's provided */
		194	#elif defined (NSIG)
		195	# define EV_NSIG (NSIG)
		196	#elif defined(_NSIG)
		197	# define EV_NSIG (_NSIG)
		198	#elif defined (SIGMAX)
		199	# define EV_NSIG (SIGMAX+1)
		200	#elif defined (SIG_MAX)
		201	# define EV_NSIG (SIG_MAX+1)
		202	#elif defined (_SIG_MAX)
		203	# define EV_NSIG (_SIG_MAX+1)
		204	#elif defined (MAXSIG)
		205	# define EV_NSIG (MAXSIG+1)
		206	#elif defined (MAX_SIG)
		207	# define EV_NSIG (MAX_SIG+1)
		208	#elif defined (SIGARRAYSIZE)
		209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		210	#elif defined (_sys_nsig)
		211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		212	#else
		213	# error "unable to find value for NSIG, please report"
		214	/* to make it compile regardless, just remove the above line */
		215	# define EV_NSIG 65
		216	#endif
		217
181	#ifndef EV_USE_CLOCK_SYSCALL	218	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	219	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	220	# define EV_USE_CLOCK_SYSCALL 1
184	# else	221	# else
185	# define EV_USE_CLOCK_SYSCALL 0	222	# define EV_USE_CLOCK_SYSCALL 0
…		…
264	# else	301	# else
265	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
266	# endif	303	# endif
267	#endif	304	#endif
268		305
		306	#ifndef EV_USE_SIGNALFD
		307	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))
		308	# define EV_USE_SIGNALFD 1
		309	# else
		310	# define EV_USE_SIGNALFD 0
		311	# endif
		312	#endif
		313
269	#if 0 /* debugging */	314	#if 0 /* debugging */
270	# define EV_VERIFY 3	315	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	316	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	317	# define EV_HEAP_CACHE_AT 1
273	#endif	318	#endif
…		…
280	# define EV_USE_4HEAP !EV_MINIMAL	325	# define EV_USE_4HEAP !EV_MINIMAL
281	#endif	326	#endif
282		327
283	#ifndef EV_HEAP_CACHE_AT	328	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	329	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		330	#endif
		331
		332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		333	/* which makes programs even slower. might work on other unices, too. */
		334	#if EV_USE_CLOCK_SYSCALL
		335	# include <syscall.h>
		336	# ifdef SYS_clock_gettime
		337	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		338	# undef EV_USE_MONOTONIC
		339	# define EV_USE_MONOTONIC 1
		340	# else
		341	# undef EV_USE_CLOCK_SYSCALL
		342	# define EV_USE_CLOCK_SYSCALL 0
		343	# endif
285	#endif	344	#endif
286		345
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
288		347
289	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
…		…
320		379
321	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	381	# include <winsock.h>
323	#endif	382	#endif
324		383
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	384	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	385	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	386	# include <stdint.h>
		387	# ifndef EFD_NONBLOCK
		388	# define EFD_NONBLOCK O_NONBLOCK
		389	# endif
		390	# ifndef EFD_CLOEXEC
		391	# define EFD_CLOEXEC O_CLOEXEC
		392	# endif
337	# ifdef __cplusplus	393	# ifdef __cplusplus
338	extern "C" {	394	extern "C" {
339	# endif	395	# endif
340	int eventfd (unsigned int initval, int flags);	396	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	397	# ifdef __cplusplus
342	}	398	}
343	# endif	399	# endif
		400	#endif
		401
		402	#if EV_USE_SIGNALFD
		403	# include <sys/signalfd.h>
344	#endif	404	#endif
345		405
346	/**/	406	/**/
347		407
348	#if EV_VERIFY >= 3	408	#if EV_VERIFY >= 3
…		…
384	# define inline_speed static noinline	444	# define inline_speed static noinline
385	#else	445	#else
386	# define inline_speed static inline	446	# define inline_speed static inline
387	#endif	447	#endif
388		448
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	449	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		450
		451	#if EV_MINPRI == EV_MAXPRI
		452	# define ABSPRI(w) (((W)w), 0)
		453	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	454	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		455	#endif
391		456
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	457	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	458	#define EMPTY2(a,b) /* used to suppress some warnings */
394		459
395	typedef ev_watcher *W;	460	typedef ev_watcher *W;
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	543	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	544	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		545
481	/*****************************************************************************/	546	/*****************************************************************************/
482		547
		548	/* set in reify when reification needed */
		549	#define EV_ANFD_REIFY 1
		550
		551	/* file descriptor info structure */
483	typedef struct	552	typedef struct
484	{	553	{
485	WL head;	554	WL head;
486	unsigned char events;	555	unsigned char events; /* the events watched for */
487	unsigned char reify;	556	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 */	557	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	558	unsigned char unused;
490	#if EV_USE_EPOLL	559	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	560	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	561	#endif
493	#if EV_SELECT_IS_WINSOCKET	562	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	563	SOCKET handle;
495	#endif	564	#endif
496	} ANFD;	565	} ANFD;
497		566
		567	/* stores the pending event set for a given watcher */
498	typedef struct	568	typedef struct
499	{	569	{
500	W w;	570	W w;
501	int events;	571	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	572	} ANPENDING;
503		573
504	#if EV_USE_INOTIFY	574	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	575	/* hash table entry per inotify-id */
506	typedef struct	576	typedef struct
…		…
509	} ANFS;	579	} ANFS;
510	#endif	580	#endif
511		581
512	/* Heap Entry */	582	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	583	#if EV_HEAP_CACHE_AT
		584	/* a heap element */
514	typedef struct {	585	typedef struct {
515	ev_tstamp at;	586	ev_tstamp at;
516	WT w;	587	WT w;
517	} ANHE;	588	} ANHE;
518		589
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	590	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	591	#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 */	592	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	593	#else
		594	/* a heap element */
523	typedef WT ANHE;	595	typedef WT ANHE;
524		596
525	#define ANHE_w(he) (he)	597	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	598	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	599	#define ANHE_at_cache(he)
…		…
551		623
552	static int ev_default_loop_ptr;	624	static int ev_default_loop_ptr;
553		625
554	#endif	626	#endif
555		627
		628	#if EV_MINIMAL < 2
		629	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		630	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		631	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		632	#else
		633	# define EV_RELEASE_CB (void)0
		634	# define EV_ACQUIRE_CB (void)0
		635	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		636	#endif
		637
		638	#define EVUNLOOP_RECURSE 0x80
		639
556	/*****************************************************************************/	640	/*****************************************************************************/
557		641
		642	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	643	ev_tstamp
559	ev_time (void)	644	ev_time (void)
560	{	645	{
561	#if EV_USE_REALTIME	646	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	647	if (expect_true (have_realtime))
…		…
569		654
570	struct timeval tv;	655	struct timeval tv;
571	gettimeofday (&tv, 0);	656	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	657	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	658	}
		659	#endif
574		660
575	ev_tstamp inline_size	661	inline_size ev_tstamp
576	get_clock (void)	662	get_clock (void)
577	{	663	{
578	#if EV_USE_MONOTONIC	664	#if EV_USE_MONOTONIC
579	if (expect_true (have_monotonic))	665	if (expect_true (have_monotonic))
580	{	666	{
…		…
614		700
615	tv.tv_sec = (time_t)delay;	701	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	702	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		703
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	704	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	705	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	706	/* by older ones */
621	select (0, 0, 0, 0, &tv);	707	select (0, 0, 0, 0, &tv);
622	#endif	708	#endif
623	}	709	}
624	}	710	}
625		711
626	/*****************************************************************************/	712	/*****************************************************************************/
627		713
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	714	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		715
630	int inline_size	716	/* find a suitable new size for the given array, */
		717	/* hopefully by rounding to a ncie-to-malloc size */
		718	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	719	array_nextsize (int elem, int cur, int cnt)
632	{	720	{
633	int ncur = cur + 1;	721	int ncur = cur + 1;
634		722
635	do	723	do
…		…
680	#define array_free(stem, idx) \	768	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	769	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		770
683	/*****************************************************************************/	771	/*****************************************************************************/
684		772
		773	/* dummy callback for pending events */
		774	static void noinline
		775	pendingcb (EV_P_ ev_prepare *w, int revents)
		776	{
		777	}
		778
685	void noinline	779	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	780	ev_feed_event (EV_P_ void *w, int revents)
687	{	781	{
688	W w_ = (W)w;	782	W w_ = (W)w;
689	int pri = ABSPRI (w_);	783	int pri = ABSPRI (w_);
…		…
697	pendings [pri][w_->pending - 1].w = w_;	791	pendings [pri][w_->pending - 1].w = w_;
698	pendings [pri][w_->pending - 1].events = revents;	792	pendings [pri][w_->pending - 1].events = revents;
699	}	793	}
700	}	794	}
701		795
702	void inline_speed	796	inline_speed void
		797	feed_reverse (EV_P_ W w)
		798	{
		799	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		800	rfeeds [rfeedcnt++] = w;
		801	}
		802
		803	inline_size void
		804	feed_reverse_done (EV_P_ int revents)
		805	{
		806	do
		807	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		808	while (rfeedcnt);
		809	}
		810
		811	inline_speed void
703	queue_events (EV_P_ W *events, int eventcnt, int type)	812	queue_events (EV_P_ W *events, int eventcnt, int type)
704	{	813	{
705	int i;	814	int i;
706		815
707	for (i = 0; i < eventcnt; ++i)	816	for (i = 0; i < eventcnt; ++i)
708	ev_feed_event (EV_A_ events [i], type);	817	ev_feed_event (EV_A_ events [i], type);
709	}	818	}
710		819
711	/*****************************************************************************/	820	/*****************************************************************************/
712		821
713	void inline_speed	822	inline_speed void
714	fd_event (EV_P_ int fd, int revents)	823	fd_event_nc (EV_P_ int fd, int revents)
715	{	824	{
716	ANFD *anfd = anfds + fd;	825	ANFD *anfd = anfds + fd;
717	ev_io *w;	826	ev_io *w;
718		827
719	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	828	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
723	if (ev)	832	if (ev)
724	ev_feed_event (EV_A_ (W)w, ev);	833	ev_feed_event (EV_A_ (W)w, ev);
725	}	834	}
726	}	835	}
727		836
		837	/* do not submit kernel events for fds that have reify set */
		838	/* because that means they changed while we were polling for new events */
		839	inline_speed void
		840	fd_event (EV_P_ int fd, int revents)
		841	{
		842	ANFD *anfd = anfds + fd;
		843
		844	if (expect_true (!anfd->reify))
		845	fd_event_nc (EV_A_ fd, revents);
		846	}
		847
728	void	848	void
729	ev_feed_fd_event (EV_P_ int fd, int revents)	849	ev_feed_fd_event (EV_P_ int fd, int revents)
730	{	850	{
731	if (fd >= 0 && fd < anfdmax)	851	if (fd >= 0 && fd < anfdmax)
732	fd_event (EV_A_ fd, revents);	852	fd_event_nc (EV_A_ fd, revents);
733	}	853	}
734		854
735	void inline_size	855	/* make sure the external fd watch events are in-sync */
		856	/* with the kernel/libev internal state */
		857	inline_size void
736	fd_reify (EV_P)	858	fd_reify (EV_P)
737	{	859	{
738	int i;	860	int i;
739		861
740	for (i = 0; i < fdchangecnt; ++i)	862	for (i = 0; i < fdchangecnt; ++i)
…		…
766	unsigned char o_reify = anfd->reify;	888	unsigned char o_reify = anfd->reify;
767		889
768	anfd->reify = 0;	890	anfd->reify = 0;
769	anfd->events = events;	891	anfd->events = events;
770		892
771	if (o_events != events || o_reify & EV_IOFDSET)	893	if (o_events != events || o_reify & EV__IOFDSET)
772	backend_modify (EV_A_ fd, o_events, events);	894	backend_modify (EV_A_ fd, o_events, events);
773	}	895	}
774	}	896	}
775		897
776	fdchangecnt = 0;	898	fdchangecnt = 0;
777	}	899	}
778		900
779	void inline_size	901	/* something about the given fd changed */
		902	inline_size void
780	fd_change (EV_P_ int fd, int flags)	903	fd_change (EV_P_ int fd, int flags)
781	{	904	{
782	unsigned char reify = anfds [fd].reify;	905	unsigned char reify = anfds [fd].reify;
783	anfds [fd].reify |= flags;	906	anfds [fd].reify |= flags;
784		907
…		…
788	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	911	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789	fdchanges [fdchangecnt - 1] = fd;	912	fdchanges [fdchangecnt - 1] = fd;
790	}	913	}
791	}	914	}
792		915
793	void inline_speed	916	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		917	inline_speed void
794	fd_kill (EV_P_ int fd)	918	fd_kill (EV_P_ int fd)
795	{	919	{
796	ev_io *w;	920	ev_io *w;
797		921
798	while ((w = (ev_io *)anfds [fd].head))	922	while ((w = (ev_io *)anfds [fd].head))
…		…
800	ev_io_stop (EV_A_ w);	924	ev_io_stop (EV_A_ w);
801	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	925	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802	}	926	}
803	}	927	}
804		928
805	int inline_size	929	/* check whether the given fd is atcually valid, for error recovery */
		930	inline_size int
806	fd_valid (int fd)	931	fd_valid (int fd)
807	{	932	{
808	#ifdef _WIN32	933	#ifdef _WIN32
809	return _get_osfhandle (fd) != -1;	934	return _get_osfhandle (fd) != -1;
810	#else	935	#else
…		…
832		957
833	for (fd = anfdmax; fd--; )	958	for (fd = anfdmax; fd--; )
834	if (anfds [fd].events)	959	if (anfds [fd].events)
835	{	960	{
836	fd_kill (EV_A_ fd);	961	fd_kill (EV_A_ fd);
837	return;	962	break;
838	}	963	}
839	}	964	}
840		965
841	/* usually called after fork if backend needs to re-arm all fds from scratch */	966	/* usually called after fork if backend needs to re-arm all fds from scratch */
842	static void noinline	967	static void noinline
…		…
847	for (fd = 0; fd < anfdmax; ++fd)	972	for (fd = 0; fd < anfdmax; ++fd)
848	if (anfds [fd].events)	973	if (anfds [fd].events)
849	{	974	{
850	anfds [fd].events = 0;	975	anfds [fd].events = 0;
851	anfds [fd].emask = 0;	976	anfds [fd].emask = 0;
852	fd_change (EV_A_ fd, EV_IOFDSET | 1);	977	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853	}	978	}
854	}	979	}
855		980
856	/*****************************************************************************/	981	/*****************************************************************************/
857		982
…		…
873	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	998	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	999	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875	#define UPHEAP_DONE(p,k) ((p) == (k))	1000	#define UPHEAP_DONE(p,k) ((p) == (k))
876		1001
877	/* away from the root */	1002	/* away from the root */
878	void inline_speed	1003	inline_speed void
879	downheap (ANHE *heap, int N, int k)	1004	downheap (ANHE *heap, int N, int k)
880	{	1005	{
881	ANHE he = heap [k];	1006	ANHE he = heap [k];
882	ANHE *E = heap + N + HEAP0;	1007	ANHE *E = heap + N + HEAP0;
883		1008
…		…
923	#define HEAP0 1	1048	#define HEAP0 1
924	#define HPARENT(k) ((k) >> 1)	1049	#define HPARENT(k) ((k) >> 1)
925	#define UPHEAP_DONE(p,k) (!(p))	1050	#define UPHEAP_DONE(p,k) (!(p))
926		1051
927	/* away from the root */	1052	/* away from the root */
928	void inline_speed	1053	inline_speed void
929	downheap (ANHE *heap, int N, int k)	1054	downheap (ANHE *heap, int N, int k)
930	{	1055	{
931	ANHE he = heap [k];	1056	ANHE he = heap [k];
932		1057
933	for (;;)	1058	for (;;)
…		…
953	ev_active (ANHE_w (he)) = k;	1078	ev_active (ANHE_w (he)) = k;
954	}	1079	}
955	#endif	1080	#endif
956		1081
957	/* towards the root */	1082	/* towards the root */
958	void inline_speed	1083	inline_speed void
959	upheap (ANHE *heap, int k)	1084	upheap (ANHE *heap, int k)
960	{	1085	{
961	ANHE he = heap [k];	1086	ANHE he = heap [k];
962		1087
963	for (;;)	1088	for (;;)
…		…
974		1099
975	heap [k] = he;	1100	heap [k] = he;
976	ev_active (ANHE_w (he)) = k;	1101	ev_active (ANHE_w (he)) = k;
977	}	1102	}
978		1103
979	void inline_size	1104	/* move an element suitably so it is in a correct place */
		1105	inline_size void
980	adjustheap (ANHE *heap, int N, int k)	1106	adjustheap (ANHE *heap, int N, int k)
981	{	1107	{
982	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1108	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
983	upheap (heap, k);	1109	upheap (heap, k);
984	else	1110	else
985	downheap (heap, N, k);	1111	downheap (heap, N, k);
986	}	1112	}
987		1113
988	/* rebuild the heap: this function is used only once and executed rarely */	1114	/* rebuild the heap: this function is used only once and executed rarely */
989	void inline_size	1115	inline_size void
990	reheap (ANHE *heap, int N)	1116	reheap (ANHE *heap, int N)
991	{	1117	{
992	int i;	1118	int i;
993		1119
994	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1120	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
997	upheap (heap, i + HEAP0);	1123	upheap (heap, i + HEAP0);
998	}	1124	}
999		1125
1000	/*****************************************************************************/	1126	/*****************************************************************************/
1001		1127
		1128	/* associate signal watchers to a signal signal */
1002	typedef struct	1129	typedef struct
1003	{	1130	{
		1131	EV_ATOMIC_T pending;
		1132	#if EV_MULTIPLICITY
		1133	EV_P;
		1134	#endif
1004	WL head;	1135	WL head;
1005	EV_ATOMIC_T gotsig;
1006	} ANSIG;	1136	} ANSIG;
1007		1137
1008	static ANSIG *signals;	1138	static ANSIG signals [EV_NSIG - 1];
1009	static int signalmax;
1010
1011	static EV_ATOMIC_T gotsig;
1012		1139
1013	/*****************************************************************************/	1140	/*****************************************************************************/
1014		1141
1015	void inline_speed	1142	/* used to prepare libev internal fd's */
		1143	/* this is not fork-safe */
		1144	inline_speed void
1016	fd_intern (int fd)	1145	fd_intern (int fd)
1017	{	1146	{
1018	#ifdef _WIN32	1147	#ifdef _WIN32
1019	unsigned long arg = 1;	1148	unsigned long arg = 1;
1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1149	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1025	}	1154	}
1026		1155
1027	static void noinline	1156	static void noinline
1028	evpipe_init (EV_P)	1157	evpipe_init (EV_P)
1029	{	1158	{
1030	if (!ev_is_active (&pipeev))	1159	if (!ev_is_active (&pipe_w))
1031	{	1160	{
1032	#if EV_USE_EVENTFD	1161	#if EV_USE_EVENTFD
		1162	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1163	if (evfd < 0 && errno == EINVAL)
1033	if ((evfd = eventfd (0, 0)) >= 0)	1164	evfd = eventfd (0, 0);
		1165
		1166	if (evfd >= 0)
1034	{	1167	{
1035	evpipe [0] = -1;	1168	evpipe [0] = -1;
1036	fd_intern (evfd);	1169	fd_intern (evfd); /* doing it twice doesn't hurt */
1037	ev_io_set (&pipeev, evfd, EV_READ);	1170	ev_io_set (&pipe_w, evfd, EV_READ);
1038	}	1171	}
1039	else	1172	else
1040	#endif	1173	#endif
1041	{	1174	{
1042	while (pipe (evpipe))	1175	while (pipe (evpipe))
1043	ev_syserr ("(libev) error creating signal/async pipe");	1176	ev_syserr ("(libev) error creating signal/async pipe");
1044		1177
1045	fd_intern (evpipe [0]);	1178	fd_intern (evpipe [0]);
1046	fd_intern (evpipe [1]);	1179	fd_intern (evpipe [1]);
1047	ev_io_set (&pipeev, evpipe [0], EV_READ);	1180	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048	}	1181	}
1049		1182
1050	ev_io_start (EV_A_ &pipeev);	1183	ev_io_start (EV_A_ &pipe_w);
1051	ev_unref (EV_A); /* watcher should not keep loop alive */	1184	ev_unref (EV_A); /* watcher should not keep loop alive */
1052	}	1185	}
1053	}	1186	}
1054		1187
1055	void inline_size	1188	inline_size void
1056	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1189	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057	{	1190	{
1058	if (!*flag)	1191	if (!*flag)
1059	{	1192	{
1060	int old_errno = errno; /* save errno because write might clobber it */	1193	int old_errno = errno; /* save errno because write might clobber it */
…		…
1073		1206
1074	errno = old_errno;	1207	errno = old_errno;
1075	}	1208	}
1076	}	1209	}
1077		1210
		1211	/* called whenever the libev signal pipe */
		1212	/* got some events (signal, async) */
1078	static void	1213	static void
1079	pipecb (EV_P_ ev_io *iow, int revents)	1214	pipecb (EV_P_ ev_io *iow, int revents)
1080	{	1215	{
		1216	int i;
		1217
1081	#if EV_USE_EVENTFD	1218	#if EV_USE_EVENTFD
1082	if (evfd >= 0)	1219	if (evfd >= 0)
1083	{	1220	{
1084	uint64_t counter;	1221	uint64_t counter;
1085	read (evfd, &counter, sizeof (uint64_t));	1222	read (evfd, &counter, sizeof (uint64_t));
…		…
1089	{	1226	{
1090	char dummy;	1227	char dummy;
1091	read (evpipe [0], &dummy, 1);	1228	read (evpipe [0], &dummy, 1);
1092	}	1229	}
1093		1230
1094	if (gotsig && ev_is_default_loop (EV_A))	1231	if (sig_pending)
1095	{	1232	{
1096	int signum;	1233	sig_pending = 0;
1097	gotsig = 0;
1098		1234
1099	for (signum = signalmax; signum--; )	1235	for (i = EV_NSIG - 1; i--; )
1100	if (signals [signum].gotsig)	1236	if (expect_false (signals [i].pending))
1101	ev_feed_signal_event (EV_A_ signum + 1);	1237	ev_feed_signal_event (EV_A_ i + 1);
1102	}	1238	}
1103		1239
1104	#if EV_ASYNC_ENABLE	1240	#if EV_ASYNC_ENABLE
1105	if (gotasync)	1241	if (async_pending)
1106	{	1242	{
1107	int i;	1243	async_pending = 0;
1108	gotasync = 0;
1109		1244
1110	for (i = asynccnt; i--; )	1245	for (i = asynccnt; i--; )
1111	if (asyncs [i]->sent)	1246	if (asyncs [i]->sent)
1112	{	1247	{
1113	asyncs [i]->sent = 0;	1248	asyncs [i]->sent = 0;
…		…
1121		1256
1122	static void	1257	static void
1123	ev_sighandler (int signum)	1258	ev_sighandler (int signum)
1124	{	1259	{
1125	#if EV_MULTIPLICITY	1260	#if EV_MULTIPLICITY
1126	struct ev_loop *loop = &default_loop_struct;	1261	EV_P = signals [signum - 1].loop;
1127	#endif	1262	#endif
1128		1263
1129	#if _WIN32	1264	#if _WIN32
1130	signal (signum, ev_sighandler);	1265	signal (signum, ev_sighandler);
1131	#endif	1266	#endif
1132		1267
1133	signals [signum - 1].gotsig = 1;	1268	signals [signum - 1].pending = 1;
1134	evpipe_write (EV_A_ &gotsig);	1269	evpipe_write (EV_A_ &sig_pending);
1135	}	1270	}
1136		1271
1137	void noinline	1272	void noinline
1138	ev_feed_signal_event (EV_P_ int signum)	1273	ev_feed_signal_event (EV_P_ int signum)
1139	{	1274	{
1140	WL w;	1275	WL w;
1141		1276
		1277	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1278	return;
		1279
		1280	--signum;
		1281
1142	#if EV_MULTIPLICITY	1282	#if EV_MULTIPLICITY
1143	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1283	/* it is permissible to try to feed a signal to the wrong loop */
1144	#endif	1284	/* or, likely more useful, feeding a signal nobody is waiting for */
1145		1285
1146	--signum;	1286	if (expect_false (signals [signum].loop != EV_A))
1147
1148	if (signum < 0 || signum >= signalmax)
1149	return;	1287	return;
		1288	#endif
1150		1289
1151	signals [signum].gotsig = 0;	1290	signals [signum].pending = 0;
1152		1291
1153	for (w = signals [signum].head; w; w = w->next)	1292	for (w = signals [signum].head; w; w = w->next)
1154	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1293	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155	}	1294	}
1156		1295
		1296	#if EV_USE_SIGNALFD
		1297	static void
		1298	sigfdcb (EV_P_ ev_io *iow, int revents)
		1299	{
		1300	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1301
		1302	for (;;)
		1303	{
		1304	ssize_t res = read (sigfd, si, sizeof (si));
		1305
		1306	/* not ISO-C, as res might be -1, but works with SuS */
		1307	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1308	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1309
		1310	if (res < (ssize_t)sizeof (si))
		1311	break;
		1312	}
		1313	}
		1314	#endif
		1315
1157	/*****************************************************************************/	1316	/*****************************************************************************/
1158		1317
1159	static WL childs [EV_PID_HASHSIZE];	1318	static WL childs [EV_PID_HASHSIZE];
1160		1319
1161	#ifndef _WIN32	1320	#ifndef _WIN32
…		…
1164		1323
1165	#ifndef WIFCONTINUED	1324	#ifndef WIFCONTINUED
1166	# define WIFCONTINUED(status) 0	1325	# define WIFCONTINUED(status) 0
1167	#endif	1326	#endif
1168		1327
1169	void inline_speed	1328	/* handle a single child status event */
		1329	inline_speed void
1170	child_reap (EV_P_ int chain, int pid, int status)	1330	child_reap (EV_P_ int chain, int pid, int status)
1171	{	1331	{
1172	ev_child *w;	1332	ev_child *w;
1173	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1333	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174		1334
…		…
1187		1347
1188	#ifndef WCONTINUED	1348	#ifndef WCONTINUED
1189	# define WCONTINUED 0	1349	# define WCONTINUED 0
1190	#endif	1350	#endif
1191		1351
		1352	/* called on sigchld etc., calls waitpid */
1192	static void	1353	static void
1193	childcb (EV_P_ ev_signal *sw, int revents)	1354	childcb (EV_P_ ev_signal *sw, int revents)
1194	{	1355	{
1195	int pid, status;	1356	int pid, status;
1196		1357
…		…
1303	ev_backend (EV_P)	1464	ev_backend (EV_P)
1304	{	1465	{
1305	return backend;	1466	return backend;
1306	}	1467	}
1307		1468
		1469	#if EV_MINIMAL < 2
1308	unsigned int	1470	unsigned int
1309	ev_loop_count (EV_P)	1471	ev_loop_count (EV_P)
1310	{	1472	{
1311	return loop_count;	1473	return loop_count;
1312	}	1474	}
1313		1475
		1476	unsigned int
		1477	ev_loop_depth (EV_P)
		1478	{
		1479	return loop_depth;
		1480	}
		1481
1314	void	1482	void
1315	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1483	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316	{	1484	{
1317	io_blocktime = interval;	1485	io_blocktime = interval;
1318	}	1486	}
…		…
1321	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1489	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322	{	1490	{
1323	timeout_blocktime = interval;	1491	timeout_blocktime = interval;
1324	}	1492	}
1325		1493
		1494	void
		1495	ev_set_userdata (EV_P_ void *data)
		1496	{
		1497	userdata = data;
		1498	}
		1499
		1500	void *
		1501	ev_userdata (EV_P)
		1502	{
		1503	return userdata;
		1504	}
		1505
		1506	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1507	{
		1508	invoke_cb = invoke_pending_cb;
		1509	}
		1510
		1511	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1512	{
		1513	release_cb = release;
		1514	acquire_cb = acquire;
		1515	}
		1516	#endif
		1517
		1518	/* initialise a loop structure, must be zero-initialised */
1326	static void noinline	1519	static void noinline
1327	loop_init (EV_P_ unsigned int flags)	1520	loop_init (EV_P_ unsigned int flags)
1328	{	1521	{
1329	if (!backend)	1522	if (!backend)
1330	{	1523	{
…		…
1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347	have_monotonic = 1;	1540	have_monotonic = 1;
1348	}	1541	}
1349	#endif	1542	#endif
1350		1543
		1544	/* pid check not overridable via env */
		1545	#ifndef _WIN32
		1546	if (flags & EVFLAG_FORKCHECK)
		1547	curpid = getpid ();
		1548	#endif
		1549
		1550	if (!(flags & EVFLAG_NOENV)
		1551	&& !enable_secure ()
		1552	&& getenv ("LIBEV_FLAGS"))
		1553	flags = atoi (getenv ("LIBEV_FLAGS"));
		1554
1351	ev_rt_now = ev_time ();	1555	ev_rt_now = ev_time ();
1352	mn_now = get_clock ();	1556	mn_now = get_clock ();
1353	now_floor = mn_now;	1557	now_floor = mn_now;
1354	rtmn_diff = ev_rt_now - mn_now;	1558	rtmn_diff = ev_rt_now - mn_now;
		1559	#if EV_MINIMAL < 2
		1560	invoke_cb = ev_invoke_pending;
		1561	#endif
1355		1562
1356	io_blocktime = 0.;	1563	io_blocktime = 0.;
1357	timeout_blocktime = 0.;	1564	timeout_blocktime = 0.;
1358	backend = 0;	1565	backend = 0;
1359	backend_fd = -1;	1566	backend_fd = -1;
1360	gotasync = 0;	1567	sig_pending = 0;
		1568	#if EV_ASYNC_ENABLE
		1569	async_pending = 0;
		1570	#endif
1361	#if EV_USE_INOTIFY	1571	#if EV_USE_INOTIFY
1362	fs_fd = -2;	1572	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363	#endif	1573	#endif
1364		1574	#if EV_USE_SIGNALFD
1365	/* pid check not overridable via env */	1575	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1366	#ifndef _WIN32
1367	if (flags & EVFLAG_FORKCHECK)
1368	curpid = getpid ();
1369	#endif	1576	#endif
1370
1371	if (!(flags & EVFLAG_NOENV)
1372	&& !enable_secure ()
1373	&& getenv ("LIBEV_FLAGS"))
1374	flags = atoi (getenv ("LIBEV_FLAGS"));
1375		1577
1376	if (!(flags & 0x0000ffffU))	1578	if (!(flags & 0x0000ffffU))
1377	flags |= ev_recommended_backends ();	1579	flags |= ev_recommended_backends ();
1378		1580
1379	#if EV_USE_PORT	1581	#if EV_USE_PORT
…		…
1390	#endif	1592	#endif
1391	#if EV_USE_SELECT	1593	#if EV_USE_SELECT
1392	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393	#endif	1595	#endif
1394		1596
		1597	ev_prepare_init (&pending_w, pendingcb);
		1598
1395	ev_init (&pipeev, pipecb);	1599	ev_init (&pipe_w, pipecb);
1396	ev_set_priority (&pipeev, EV_MAXPRI);	1600	ev_set_priority (&pipe_w, EV_MAXPRI);
1397	}	1601	}
1398	}	1602	}
1399		1603
		1604	/* free up a loop structure */
1400	static void noinline	1605	static void noinline
1401	loop_destroy (EV_P)	1606	loop_destroy (EV_P)
1402	{	1607	{
1403	int i;	1608	int i;
1404		1609
1405	if (ev_is_active (&pipeev))	1610	if (ev_is_active (&pipe_w))
1406	{	1611	{
1407	ev_ref (EV_A); /* signal watcher */	1612	/*ev_ref (EV_A);*/
1408	ev_io_stop (EV_A_ &pipeev);	1613	/*ev_io_stop (EV_A_ &pipe_w);*/
1409		1614
1410	#if EV_USE_EVENTFD	1615	#if EV_USE_EVENTFD
1411	if (evfd >= 0)	1616	if (evfd >= 0)
1412	close (evfd);	1617	close (evfd);
1413	#endif	1618	#endif
…		…
1417	close (evpipe [0]);	1622	close (evpipe [0]);
1418	close (evpipe [1]);	1623	close (evpipe [1]);
1419	}	1624	}
1420	}	1625	}
1421		1626
		1627	#if EV_USE_SIGNALFD
		1628	if (ev_is_active (&sigfd_w))
		1629	{
		1630	/*ev_ref (EV_A);*/
		1631	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1632
		1633	close (sigfd);
		1634	}
		1635	#endif
		1636
1422	#if EV_USE_INOTIFY	1637	#if EV_USE_INOTIFY
1423	if (fs_fd >= 0)	1638	if (fs_fd >= 0)
1424	close (fs_fd);	1639	close (fs_fd);
1425	#endif	1640	#endif
1426		1641
…		…
1449	#if EV_IDLE_ENABLE	1664	#if EV_IDLE_ENABLE
1450	array_free (idle, [i]);	1665	array_free (idle, [i]);
1451	#endif	1666	#endif
1452	}	1667	}
1453		1668
1454	ev_free (anfds); anfdmax = 0;	1669	ev_free (anfds); anfds = 0; anfdmax = 0;
1455		1670
1456	/* have to use the microsoft-never-gets-it-right macro */	1671	/* have to use the microsoft-never-gets-it-right macro */
		1672	array_free (rfeed, EMPTY);
1457	array_free (fdchange, EMPTY);	1673	array_free (fdchange, EMPTY);
1458	array_free (timer, EMPTY);	1674	array_free (timer, EMPTY);
1459	#if EV_PERIODIC_ENABLE	1675	#if EV_PERIODIC_ENABLE
1460	array_free (periodic, EMPTY);	1676	array_free (periodic, EMPTY);
1461	#endif	1677	#endif
…		…
1470		1686
1471	backend = 0;	1687	backend = 0;
1472	}	1688	}
1473		1689
1474	#if EV_USE_INOTIFY	1690	#if EV_USE_INOTIFY
1475	void inline_size infy_fork (EV_P);	1691	inline_size void infy_fork (EV_P);
1476	#endif	1692	#endif
1477		1693
1478	void inline_size	1694	inline_size void
1479	loop_fork (EV_P)	1695	loop_fork (EV_P)
1480	{	1696	{
1481	#if EV_USE_PORT	1697	#if EV_USE_PORT
1482	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1698	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483	#endif	1699	#endif
…		…
1489	#endif	1705	#endif
1490	#if EV_USE_INOTIFY	1706	#if EV_USE_INOTIFY
1491	infy_fork (EV_A);	1707	infy_fork (EV_A);
1492	#endif	1708	#endif
1493		1709
1494	if (ev_is_active (&pipeev))	1710	if (ev_is_active (&pipe_w))
1495	{	1711	{
1496	/* this "locks" the handlers against writing to the pipe */	1712	/* this "locks" the handlers against writing to the pipe */
1497	/* while we modify the fd vars */	1713	/* while we modify the fd vars */
1498	gotsig = 1;	1714	sig_pending = 1;
1499	#if EV_ASYNC_ENABLE	1715	#if EV_ASYNC_ENABLE
1500	gotasync = 1;	1716	async_pending = 1;
1501	#endif	1717	#endif
1502		1718
1503	ev_ref (EV_A);	1719	ev_ref (EV_A);
1504	ev_io_stop (EV_A_ &pipeev);	1720	ev_io_stop (EV_A_ &pipe_w);
1505		1721
1506	#if EV_USE_EVENTFD	1722	#if EV_USE_EVENTFD
1507	if (evfd >= 0)	1723	if (evfd >= 0)
1508	close (evfd);	1724	close (evfd);
1509	#endif	1725	#endif
…		…
1514	close (evpipe [1]);	1730	close (evpipe [1]);
1515	}	1731	}
1516		1732
1517	evpipe_init (EV_A);	1733	evpipe_init (EV_A);
1518	/* now iterate over everything, in case we missed something */	1734	/* now iterate over everything, in case we missed something */
1519	pipecb (EV_A_ &pipeev, EV_READ);	1735	pipecb (EV_A_ &pipe_w, EV_READ);
1520	}	1736	}
1521		1737
1522	postfork = 0;	1738	postfork = 0;
1523	}	1739	}
1524		1740
1525	#if EV_MULTIPLICITY	1741	#if EV_MULTIPLICITY
1526		1742
1527	struct ev_loop *	1743	struct ev_loop *
1528	ev_loop_new (unsigned int flags)	1744	ev_loop_new (unsigned int flags)
1529	{	1745	{
1530	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1746	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531		1747
1532	memset (loop, 0, sizeof (struct ev_loop));	1748	memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534	loop_init (EV_A_ flags);	1749	loop_init (EV_A_ flags);
1535		1750
1536	if (ev_backend (EV_A))	1751	if (ev_backend (EV_A))
1537	return loop;	1752	return EV_A;
1538		1753
1539	return 0;	1754	return 0;
1540	}	1755	}
1541		1756
1542	void	1757	void
…		…
1549	void	1764	void
1550	ev_loop_fork (EV_P)	1765	ev_loop_fork (EV_P)
1551	{	1766	{
1552	postfork = 1; /* must be in line with ev_default_fork */	1767	postfork = 1; /* must be in line with ev_default_fork */
1553	}	1768	}
		1769	#endif /* multiplicity */
1554		1770
1555	#if EV_VERIFY	1771	#if EV_VERIFY
1556	static void noinline	1772	static void noinline
1557	verify_watcher (EV_P_ W w)	1773	verify_watcher (EV_P_ W w)
1558	{	1774	{
…		…
1586	verify_watcher (EV_A_ ws [cnt]);	1802	verify_watcher (EV_A_ ws [cnt]);
1587	}	1803	}
1588	}	1804	}
1589	#endif	1805	#endif
1590		1806
		1807	#if EV_MINIMAL < 2
1591	void	1808	void
1592	ev_loop_verify (EV_P)	1809	ev_loop_verify (EV_P)
1593	{	1810	{
1594	#if EV_VERIFY	1811	#if EV_VERIFY
1595	int i;	1812	int i;
…		…
1644	assert (checkmax >= checkcnt);	1861	assert (checkmax >= checkcnt);
1645	array_verify (EV_A_ (W *)checks, checkcnt);	1862	array_verify (EV_A_ (W *)checks, checkcnt);
1646		1863
1647	# if 0	1864	# if 0
1648	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1865	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)	1866	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1650	# endif	1867	# endif
1651	#endif	1868	#endif
1652	}	1869	}
1653		1870	#endif
1654	#endif /* multiplicity */
1655		1871
1656	#if EV_MULTIPLICITY	1872	#if EV_MULTIPLICITY
1657	struct ev_loop *	1873	struct ev_loop *
1658	ev_default_loop_init (unsigned int flags)	1874	ev_default_loop_init (unsigned int flags)
1659	#else	1875	#else
…		…
1662	#endif	1878	#endif
1663	{	1879	{
1664	if (!ev_default_loop_ptr)	1880	if (!ev_default_loop_ptr)
1665	{	1881	{
1666	#if EV_MULTIPLICITY	1882	#if EV_MULTIPLICITY
1667	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1883	EV_P = ev_default_loop_ptr = &default_loop_struct;
1668	#else	1884	#else
1669	ev_default_loop_ptr = 1;	1885	ev_default_loop_ptr = 1;
1670	#endif	1886	#endif
1671		1887
1672	loop_init (EV_A_ flags);	1888	loop_init (EV_A_ flags);
…		…
1689		1905
1690	void	1906	void
1691	ev_default_destroy (void)	1907	ev_default_destroy (void)
1692	{	1908	{
1693	#if EV_MULTIPLICITY	1909	#if EV_MULTIPLICITY
1694	struct ev_loop *loop = ev_default_loop_ptr;	1910	EV_P = ev_default_loop_ptr;
1695	#endif	1911	#endif
1696		1912
1697	ev_default_loop_ptr = 0;	1913	ev_default_loop_ptr = 0;
1698		1914
1699	#ifndef _WIN32	1915	#ifndef _WIN32
…		…
1706		1922
1707	void	1923	void
1708	ev_default_fork (void)	1924	ev_default_fork (void)
1709	{	1925	{
1710	#if EV_MULTIPLICITY	1926	#if EV_MULTIPLICITY
1711	struct ev_loop *loop = ev_default_loop_ptr;	1927	EV_P = ev_default_loop_ptr;
1712	#endif	1928	#endif
1713		1929
1714	postfork = 1; /* must be in line with ev_loop_fork */	1930	postfork = 1; /* must be in line with ev_loop_fork */
1715	}	1931	}
1716		1932
…		…
1720	ev_invoke (EV_P_ void *w, int revents)	1936	ev_invoke (EV_P_ void *w, int revents)
1721	{	1937	{
1722	EV_CB_INVOKE ((W)w, revents);	1938	EV_CB_INVOKE ((W)w, revents);
1723	}	1939	}
1724		1940
1725	void inline_speed	1941	unsigned int
1726	call_pending (EV_P)	1942	ev_pending_count (EV_P)
		1943	{
		1944	int pri;
		1945	unsigned int count = 0;
		1946
		1947	for (pri = NUMPRI; pri--; )
		1948	count += pendingcnt [pri];
		1949
		1950	return count;
		1951	}
		1952
		1953	void noinline
		1954	ev_invoke_pending (EV_P)
1727	{	1955	{
1728	int pri;	1956	int pri;
1729		1957
1730	for (pri = NUMPRI; pri--; )	1958	for (pri = NUMPRI; pri--; )
1731	while (pendingcnt [pri])	1959	while (pendingcnt [pri])
1732	{	1960	{
1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1961	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734		1962
1735	if (expect_true (p->w))
1736	{
1737	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	1963	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1964	/* ^ this is no longer true, as pending_w could be here */
1738		1965
1739	p->w->pending = 0;	1966	p->w->pending = 0;
1740	EV_CB_INVOKE (p->w, p->events);	1967	EV_CB_INVOKE (p->w, p->events);
1741	EV_FREQUENT_CHECK;	1968	EV_FREQUENT_CHECK;
1742	}
1743	}	1969	}
1744	}	1970	}
1745		1971
1746	#if EV_IDLE_ENABLE	1972	#if EV_IDLE_ENABLE
1747	void inline_size	1973	/* make idle watchers pending. this handles the "call-idle */
		1974	/* only when higher priorities are idle" logic */
		1975	inline_size void
1748	idle_reify (EV_P)	1976	idle_reify (EV_P)
1749	{	1977	{
1750	if (expect_false (idleall))	1978	if (expect_false (idleall))
1751	{	1979	{
1752	int pri;	1980	int pri;
…		…
1764	}	1992	}
1765	}	1993	}
1766	}	1994	}
1767	#endif	1995	#endif
1768		1996
1769	void inline_size	1997	/* make timers pending */
		1998	inline_size void
1770	timers_reify (EV_P)	1999	timers_reify (EV_P)
1771	{	2000	{
1772	EV_FREQUENT_CHECK;	2001	EV_FREQUENT_CHECK;
1773		2002
1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2003	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775	{	2004	{
1776	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2005	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	{	2006	{
		2007	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2008
		2009	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2010
		2011	/* first reschedule or stop timer */
		2012	if (w->repeat)
		2013	{
1783	ev_at (w) += w->repeat;	2014	ev_at (w) += w->repeat;
1784	if (ev_at (w) < mn_now)	2015	if (ev_at (w) < mn_now)
1785	ev_at (w) = mn_now;	2016	ev_at (w) = mn_now;
1786		2017
1787	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2018	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788		2019
1789	ANHE_at_cache (timers [HEAP0]);	2020	ANHE_at_cache (timers [HEAP0]);
1790	downheap (timers, timercnt, HEAP0);	2021	downheap (timers, timercnt, HEAP0);
		2022	}
		2023	else
		2024	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2025
		2026	EV_FREQUENT_CHECK;
		2027	feed_reverse (EV_A_ (W)w);
1791	}	2028	}
1792	else	2029	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794		2030
1795	EV_FREQUENT_CHECK;
1796	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2031	feed_reverse_done (EV_A_ EV_TIMEOUT);
1797	}	2032	}
1798	}	2033	}
1799		2034
1800	#if EV_PERIODIC_ENABLE	2035	#if EV_PERIODIC_ENABLE
1801	void inline_size	2036	/* make periodics pending */
		2037	inline_size void
1802	periodics_reify (EV_P)	2038	periodics_reify (EV_P)
1803	{	2039	{
1804	EV_FREQUENT_CHECK;	2040	EV_FREQUENT_CHECK;
1805		2041
1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2042	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807	{	2043	{
1808	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2044	int feed_count = 0;
1809		2045
1810	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/	2046	do
1811
1812	/* first reschedule or stop timer */
1813	if (w->reschedule_cb)
1814	{	2047	{
		2048	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2049
		2050	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2051
		2052	/* first reschedule or stop timer */
		2053	if (w->reschedule_cb)
		2054	{
1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2055	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816		2056
1817	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2057	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818		2058
1819	ANHE_at_cache (periodics [HEAP0]);	2059	ANHE_at_cache (periodics [HEAP0]);
1820	downheap (periodics, periodiccnt, HEAP0);	2060	downheap (periodics, periodiccnt, HEAP0);
		2061	}
		2062	else if (w->interval)
		2063	{
		2064	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2065	/* if next trigger time is not sufficiently in the future, put it there */
		2066	/* this might happen because of floating point inexactness */
		2067	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2068	{
		2069	ev_at (w) += w->interval;
		2070
		2071	/* if interval is unreasonably low we might still have a time in the past */
		2072	/* so correct this. this will make the periodic very inexact, but the user */
		2073	/* has effectively asked to get triggered more often than possible */
		2074	if (ev_at (w) < ev_rt_now)
		2075	ev_at (w) = ev_rt_now;
		2076	}
		2077
		2078	ANHE_at_cache (periodics [HEAP0]);
		2079	downheap (periodics, periodiccnt, HEAP0);
		2080	}
		2081	else
		2082	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2083
		2084	EV_FREQUENT_CHECK;
		2085	feed_reverse (EV_A_ (W)w);
1821	}	2086	}
1822	else if (w->interval)	2087	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		2088
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);	2089	feed_reverse_done (EV_A_ EV_PERIODIC);
1846	}	2090	}
1847	}	2091	}
1848		2092
		2093	/* simply recalculate all periodics */
		2094	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1849	static void noinline	2095	static void noinline
1850	periodics_reschedule (EV_P)	2096	periodics_reschedule (EV_P)
1851	{	2097	{
1852	int i;	2098	int i;
1853		2099
…		…
1866		2112
1867	reheap (periodics, periodiccnt);	2113	reheap (periodics, periodiccnt);
1868	}	2114	}
1869	#endif	2115	#endif
1870		2116
1871	void inline_speed	2117	/* adjust all timers by a given offset */
		2118	static void noinline
		2119	timers_reschedule (EV_P_ ev_tstamp adjust)
		2120	{
		2121	int i;
		2122
		2123	for (i = 0; i < timercnt; ++i)
		2124	{
		2125	ANHE *he = timers + i + HEAP0;
		2126	ANHE_w (*he)->at += adjust;
		2127	ANHE_at_cache (*he);
		2128	}
		2129	}
		2130
		2131	/* fetch new monotonic and realtime times from the kernel */
		2132	/* also detetc if there was a timejump, and act accordingly */
		2133	inline_speed void
1872	time_update (EV_P_ ev_tstamp max_block)	2134	time_update (EV_P_ ev_tstamp max_block)
1873	{	2135	{
1874	int i;
1875
1876	#if EV_USE_MONOTONIC	2136	#if EV_USE_MONOTONIC
1877	if (expect_true (have_monotonic))	2137	if (expect_true (have_monotonic))
1878	{	2138	{
		2139	int i;
1879	ev_tstamp odiff = rtmn_diff;	2140	ev_tstamp odiff = rtmn_diff;
1880		2141
1881	mn_now = get_clock ();	2142	mn_now = get_clock ();
1882		2143
1883	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2144	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1909	ev_rt_now = ev_time ();	2170	ev_rt_now = ev_time ();
1910	mn_now = get_clock ();	2171	mn_now = get_clock ();
1911	now_floor = mn_now;	2172	now_floor = mn_now;
1912	}	2173	}
1913		2174
		2175	/* no timer adjustment, as the monotonic clock doesn't jump */
		2176	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914	# if EV_PERIODIC_ENABLE	2177	# if EV_PERIODIC_ENABLE
1915	periodics_reschedule (EV_A);	2178	periodics_reschedule (EV_A);
1916	# endif	2179	# endif
1917	/* no timer adjustment, as the monotonic clock doesn't jump */
1918	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919	}	2180	}
1920	else	2181	else
1921	#endif	2182	#endif
1922	{	2183	{
1923	ev_rt_now = ev_time ();	2184	ev_rt_now = ev_time ();
1924		2185
1925	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2186	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926	{	2187	{
		2188	/* adjust timers. this is easy, as the offset is the same for all of them */
		2189	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927	#if EV_PERIODIC_ENABLE	2190	#if EV_PERIODIC_ENABLE
1928	periodics_reschedule (EV_A);	2191	periodics_reschedule (EV_A);
1929	#endif	2192	#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	}	2193	}
1938		2194
1939	mn_now = ev_rt_now;	2195	mn_now = ev_rt_now;
1940	}	2196	}
1941	}	2197	}
1942		2198
1943	void	2199	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)	2200	ev_loop (EV_P_ int flags)
1965	{	2201	{
		2202	#if EV_MINIMAL < 2
		2203	++loop_depth;
		2204	#endif
		2205
		2206	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2207
1966	loop_done = EVUNLOOP_CANCEL;	2208	loop_done = EVUNLOOP_CANCEL;
1967		2209
1968	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2210	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969		2211
1970	do	2212	do
1971	{	2213	{
1972	#if EV_VERIFY >= 2	2214	#if EV_VERIFY >= 2
1973	ev_loop_verify (EV_A);	2215	ev_loop_verify (EV_A);
…		…
1986	/* we might have forked, so queue fork handlers */	2228	/* we might have forked, so queue fork handlers */
1987	if (expect_false (postfork))	2229	if (expect_false (postfork))
1988	if (forkcnt)	2230	if (forkcnt)
1989	{	2231	{
1990	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2232	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991	call_pending (EV_A);	2233	EV_INVOKE_PENDING;
1992	}	2234	}
1993	#endif	2235	#endif
1994		2236
1995	/* queue prepare watchers (and execute them) */	2237	/* queue prepare watchers (and execute them) */
1996	if (expect_false (preparecnt))	2238	if (expect_false (preparecnt))
1997	{	2239	{
1998	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2240	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999	call_pending (EV_A);	2241	EV_INVOKE_PENDING;
2000	}	2242	}
2001		2243
2002	if (expect_false (!activecnt))	2244	if (expect_false (loop_done))
2003	break;	2245	break;
2004		2246
2005	/* we might have forked, so reify kernel state if necessary */	2247	/* we might have forked, so reify kernel state if necessary */
2006	if (expect_false (postfork))	2248	if (expect_false (postfork))
2007	loop_fork (EV_A);	2249	loop_fork (EV_A);
…		…
2014	ev_tstamp waittime = 0.;	2256	ev_tstamp waittime = 0.;
2015	ev_tstamp sleeptime = 0.;	2257	ev_tstamp sleeptime = 0.;
2016		2258
2017	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2259	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2018	{	2260	{
		2261	/* remember old timestamp for io_blocktime calculation */
		2262	ev_tstamp prev_mn_now = mn_now;
		2263
2019	/* update time to cancel out callback processing overhead */	2264	/* update time to cancel out callback processing overhead */
2020	time_update (EV_A_ 1e100);	2265	time_update (EV_A_ 1e100);
2021		2266
2022	waittime = MAX_BLOCKTIME;	2267	waittime = MAX_BLOCKTIME;
2023		2268
…		…
2033	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2278	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2034	if (waittime > to) waittime = to;	2279	if (waittime > to) waittime = to;
2035	}	2280	}
2036	#endif	2281	#endif
2037		2282
		2283	/* don't let timeouts decrease the waittime below timeout_blocktime */
2038	if (expect_false (waittime < timeout_blocktime))	2284	if (expect_false (waittime < timeout_blocktime))
2039	waittime = timeout_blocktime;	2285	waittime = timeout_blocktime;
2040		2286
2041	sleeptime = waittime - backend_fudge;	2287	/* extra check because io_blocktime is commonly 0 */
2042
2043	if (expect_true (sleeptime > io_blocktime))	2288	if (expect_false (io_blocktime))
2044	sleeptime = io_blocktime;
2045
2046	if (sleeptime)
2047	{	2289	{
		2290	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2291
		2292	if (sleeptime > waittime - backend_fudge)
		2293	sleeptime = waittime - backend_fudge;
		2294
		2295	if (expect_true (sleeptime > 0.))
		2296	{
2048	ev_sleep (sleeptime);	2297	ev_sleep (sleeptime);
2049	waittime -= sleeptime;	2298	waittime -= sleeptime;
		2299	}
2050	}	2300	}
2051	}	2301	}
2052		2302
		2303	#if EV_MINIMAL < 2
2053	++loop_count;	2304	++loop_count;
		2305	#endif
		2306	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2054	backend_poll (EV_A_ waittime);	2307	backend_poll (EV_A_ waittime);
		2308	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2055		2309
2056	/* update ev_rt_now, do magic */	2310	/* update ev_rt_now, do magic */
2057	time_update (EV_A_ waittime + sleeptime);	2311	time_update (EV_A_ waittime + sleeptime);
2058	}	2312	}
2059		2313
…		…
2070		2324
2071	/* queue check watchers, to be executed first */	2325	/* queue check watchers, to be executed first */
2072	if (expect_false (checkcnt))	2326	if (expect_false (checkcnt))
2073	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2327	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2074		2328
2075	call_pending (EV_A);	2329	EV_INVOKE_PENDING;
2076	}	2330	}
2077	while (expect_true (	2331	while (expect_true (
2078	activecnt	2332	activecnt
2079	&& !loop_done	2333	&& !loop_done
2080	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2334	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2081	));	2335	));
2082		2336
2083	if (loop_done == EVUNLOOP_ONE)	2337	if (loop_done == EVUNLOOP_ONE)
2084	loop_done = EVUNLOOP_CANCEL;	2338	loop_done = EVUNLOOP_CANCEL;
		2339
		2340	#if EV_MINIMAL < 2
		2341	--loop_depth;
		2342	#endif
2085	}	2343	}
2086		2344
2087	void	2345	void
2088	ev_unloop (EV_P_ int how)	2346	ev_unloop (EV_P_ int how)
2089	{	2347	{
2090	loop_done = how;	2348	loop_done = how;
2091	}	2349	}
2092		2350
		2351	void
		2352	ev_ref (EV_P)
		2353	{
		2354	++activecnt;
		2355	}
		2356
		2357	void
		2358	ev_unref (EV_P)
		2359	{
		2360	--activecnt;
		2361	}
		2362
		2363	void
		2364	ev_now_update (EV_P)
		2365	{
		2366	time_update (EV_A_ 1e100);
		2367	}
		2368
		2369	void
		2370	ev_suspend (EV_P)
		2371	{
		2372	ev_now_update (EV_A);
		2373	}
		2374
		2375	void
		2376	ev_resume (EV_P)
		2377	{
		2378	ev_tstamp mn_prev = mn_now;
		2379
		2380	ev_now_update (EV_A);
		2381	timers_reschedule (EV_A_ mn_now - mn_prev);
		2382	#if EV_PERIODIC_ENABLE
		2383	/* TODO: really do this? */
		2384	periodics_reschedule (EV_A);
		2385	#endif
		2386	}
		2387
2093	/*****************************************************************************/	2388	/*****************************************************************************/
		2389	/* singly-linked list management, used when the expected list length is short */
2094		2390
2095	void inline_size	2391	inline_size void
2096	wlist_add (WL *head, WL elem)	2392	wlist_add (WL *head, WL elem)
2097	{	2393	{
2098	elem->next = *head;	2394	elem->next = *head;
2099	*head = elem;	2395	*head = elem;
2100	}	2396	}
2101		2397
2102	void inline_size	2398	inline_size void
2103	wlist_del (WL *head, WL elem)	2399	wlist_del (WL *head, WL elem)
2104	{	2400	{
2105	while (*head)	2401	while (*head)
2106	{	2402	{
2107	if (*head == elem)	2403	if (expect_true (*head == elem))
2108	{	2404	{
2109	*head = elem->next;	2405	*head = elem->next;
2110	return;	2406	break;
2111	}	2407	}
2112		2408
2113	head = &(*head)->next;	2409	head = &(*head)->next;
2114	}	2410	}
2115	}	2411	}
2116		2412
2117	void inline_speed	2413	/* internal, faster, version of ev_clear_pending */
		2414	inline_speed void
2118	clear_pending (EV_P_ W w)	2415	clear_pending (EV_P_ W w)
2119	{	2416	{
2120	if (w->pending)	2417	if (w->pending)
2121	{	2418	{
2122	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2419	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2123	w->pending = 0;	2420	w->pending = 0;
2124	}	2421	}
2125	}	2422	}
2126		2423
2127	int	2424	int
…		…
2131	int pending = w_->pending;	2428	int pending = w_->pending;
2132		2429
2133	if (expect_true (pending))	2430	if (expect_true (pending))
2134	{	2431	{
2135	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2432	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2433	p->w = (W)&pending_w;
2136	w_->pending = 0;	2434	w_->pending = 0;
2137	p->w = 0;
2138	return p->events;	2435	return p->events;
2139	}	2436	}
2140	else	2437	else
2141	return 0;	2438	return 0;
2142	}	2439	}
2143		2440
2144	void inline_size	2441	inline_size void
2145	pri_adjust (EV_P_ W w)	2442	pri_adjust (EV_P_ W w)
2146	{	2443	{
2147	int pri = w->priority;	2444	int pri = ev_priority (w);
2148	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2445	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2149	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2446	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2150	w->priority = pri;	2447	ev_set_priority (w, pri);
2151	}	2448	}
2152		2449
2153	void inline_speed	2450	inline_speed void
2154	ev_start (EV_P_ W w, int active)	2451	ev_start (EV_P_ W w, int active)
2155	{	2452	{
2156	pri_adjust (EV_A_ w);	2453	pri_adjust (EV_A_ w);
2157	w->active = active;	2454	w->active = active;
2158	ev_ref (EV_A);	2455	ev_ref (EV_A);
2159	}	2456	}
2160		2457
2161	void inline_size	2458	inline_size void
2162	ev_stop (EV_P_ W w)	2459	ev_stop (EV_P_ W w)
2163	{	2460	{
2164	ev_unref (EV_A);	2461	ev_unref (EV_A);
2165	w->active = 0;	2462	w->active = 0;
2166	}	2463	}
…		…
2174		2471
2175	if (expect_false (ev_is_active (w)))	2472	if (expect_false (ev_is_active (w)))
2176	return;	2473	return;
2177		2474
2178	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2475	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))));	2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2180		2477
2181	EV_FREQUENT_CHECK;	2478	EV_FREQUENT_CHECK;
2182		2479
2183	ev_start (EV_A_ (W)w, 1);	2480	ev_start (EV_A_ (W)w, 1);
2184	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2185	wlist_add (&anfds[fd].head, (WL)w);	2482	wlist_add (&anfds[fd].head, (WL)w);
2186		2483
2187	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2484	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2188	w->events &= ~EV_IOFDSET;	2485	w->events &= ~EV__IOFDSET;
2189		2486
2190	EV_FREQUENT_CHECK;	2487	EV_FREQUENT_CHECK;
2191	}	2488	}
2192		2489
2193	void noinline	2490	void noinline
…		…
2286	}	2583	}
2287		2584
2288	EV_FREQUENT_CHECK;	2585	EV_FREQUENT_CHECK;
2289	}	2586	}
2290		2587
		2588	ev_tstamp
		2589	ev_timer_remaining (EV_P_ ev_timer *w)
		2590	{
		2591	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2592	}
		2593
2291	#if EV_PERIODIC_ENABLE	2594	#if EV_PERIODIC_ENABLE
2292	void noinline	2595	void noinline
2293	ev_periodic_start (EV_P_ ev_periodic *w)	2596	ev_periodic_start (EV_P_ ev_periodic *w)
2294	{	2597	{
2295	if (expect_false (ev_is_active (w)))	2598	if (expect_false (ev_is_active (w)))
…		…
2362	#endif	2665	#endif
2363		2666
2364	void noinline	2667	void noinline
2365	ev_signal_start (EV_P_ ev_signal *w)	2668	ev_signal_start (EV_P_ ev_signal *w)
2366	{	2669	{
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)))	2670	if (expect_false (ev_is_active (w)))
2371	return;	2671	return;
2372		2672
2373	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2673	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2374		2674
2375	evpipe_init (EV_A);	2675	#if EV_MULTIPLICITY
		2676	assert (("libev: tried to attach to a signal from two different loops",
		2677	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2376		2678
2377	EV_FREQUENT_CHECK;	2679	signals [w->signum - 1].loop = EV_A;
		2680	#endif
2378		2681
		2682	EV_FREQUENT_CHECK;
		2683
		2684	#if EV_USE_SIGNALFD
		2685	if (sigfd == -2)
2379	{	2686	{
2380	#ifndef _WIN32	2687	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2381	sigset_t full, prev;	2688	if (sigfd < 0 && errno == EINVAL)
2382	sigfillset (&full);	2689	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2383	sigprocmask (SIG_SETMASK, &full, &prev);
2384	#endif
2385		2690
2386	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2691	if (sigfd >= 0)
		2692	{
		2693	fd_intern (sigfd); /* doing it twice will not hurt */
2387		2694
2388	#ifndef _WIN32	2695	sigemptyset (&sigfd_set);
2389	sigprocmask (SIG_SETMASK, &prev, 0);	2696
2390	#endif	2697	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2698	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2699	ev_io_start (EV_A_ &sigfd_w);
		2700	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2701	}
2391	}	2702	}
		2703
		2704	if (sigfd >= 0)
		2705	{
		2706	/* TODO: check .head */
		2707	sigaddset (&sigfd_set, w->signum);
		2708	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2709
		2710	signalfd (sigfd, &sigfd_set, 0);
		2711	}
		2712	#endif
2392		2713
2393	ev_start (EV_A_ (W)w, 1);	2714	ev_start (EV_A_ (W)w, 1);
2394	wlist_add (&signals [w->signum - 1].head, (WL)w);	2715	wlist_add (&signals [w->signum - 1].head, (WL)w);
2395		2716
2396	if (!((WL)w)->next)	2717	if (!((WL)w)->next)
		2718	# if EV_USE_SIGNALFD
		2719	if (sigfd < 0) /*TODO*/
		2720	# endif
2397	{	2721	{
2398	#if _WIN32	2722	# if _WIN32
2399	signal (w->signum, ev_sighandler);	2723	signal (w->signum, ev_sighandler);
2400	#else	2724	# else
2401	struct sigaction sa;	2725	struct sigaction sa;
		2726
		2727	evpipe_init (EV_A);
		2728
2402	sa.sa_handler = ev_sighandler;	2729	sa.sa_handler = ev_sighandler;
2403	sigfillset (&sa.sa_mask);	2730	sigfillset (&sa.sa_mask);
2404	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2731	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2405	sigaction (w->signum, &sa, 0);	2732	sigaction (w->signum, &sa, 0);
		2733
		2734	sigemptyset (&sa.sa_mask);
		2735	sigaddset (&sa.sa_mask, w->signum);
		2736	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2406	#endif	2737	#endif
2407	}	2738	}
2408		2739
2409	EV_FREQUENT_CHECK;	2740	EV_FREQUENT_CHECK;
2410	}	2741	}
2411		2742
2412	void noinline	2743	void noinline
…		…
2420		2751
2421	wlist_del (&signals [w->signum - 1].head, (WL)w);	2752	wlist_del (&signals [w->signum - 1].head, (WL)w);
2422	ev_stop (EV_A_ (W)w);	2753	ev_stop (EV_A_ (W)w);
2423		2754
2424	if (!signals [w->signum - 1].head)	2755	if (!signals [w->signum - 1].head)
		2756	{
		2757	#if EV_MULTIPLICITY
		2758	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2759	#endif
		2760	#if EV_USE_SIGNALFD
		2761	if (sigfd >= 0)
		2762	{
		2763	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2764	sigdelset (&sigfd_set, w->signum);
		2765	signalfd (sigfd, &sigfd_set, 0);
		2766	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2767	/*TODO: maybe unblock signal? */
		2768	}
		2769	else
		2770	#endif
2425	signal (w->signum, SIG_DFL);	2771	signal (w->signum, SIG_DFL);
		2772	}
2426		2773
2427	EV_FREQUENT_CHECK;	2774	EV_FREQUENT_CHECK;
2428	}	2775	}
2429		2776
2430	void	2777	void
…		…
2591		2938
2592	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2939	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2593	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2940	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2594	}	2941	}
2595		2942
2596	void inline_size	2943	inline_size void
2597	check_2625 (EV_P)	2944	check_2625 (EV_P)
2598	{	2945	{
2599	/* kernels < 2.6.25 are borked	2946	/* kernels < 2.6.25 are borked
2600	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2947	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2601	*/	2948	*/
…		…
2614	return;	2961	return;
2615		2962
2616	fs_2625 = 1;	2963	fs_2625 = 1;
2617	}	2964	}
2618		2965
2619	void inline_size	2966	inline_size void
2620	infy_init (EV_P)	2967	infy_init (EV_P)
2621	{	2968	{
2622	if (fs_fd != -2)	2969	if (fs_fd != -2)
2623	return;	2970	return;
2624		2971
…		…
2634	ev_set_priority (&fs_w, EV_MAXPRI);	2981	ev_set_priority (&fs_w, EV_MAXPRI);
2635	ev_io_start (EV_A_ &fs_w);	2982	ev_io_start (EV_A_ &fs_w);
2636	}	2983	}
2637	}	2984	}
2638		2985
2639	void inline_size	2986	inline_size void
2640	infy_fork (EV_P)	2987	infy_fork (EV_P)
2641	{	2988	{
2642	int slot;	2989	int slot;
2643		2990
2644	if (fs_fd < 0)	2991	if (fs_fd < 0)
…		…
2910	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3257	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2911	{	3258	{
2912	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3259	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2913		3260
2914	{	3261	{
2915	struct ev_loop *loop = w->other;	3262	EV_P = w->other;
2916		3263
2917	while (fdchangecnt)	3264	while (fdchangecnt)
2918	{	3265	{
2919	fd_reify (EV_A);	3266	fd_reify (EV_A);
2920	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3267	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2928	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3275	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2929		3276
2930	ev_embed_stop (EV_A_ w);	3277	ev_embed_stop (EV_A_ w);
2931		3278
2932	{	3279	{
2933	struct ev_loop *loop = w->other;	3280	EV_P = w->other;
2934		3281
2935	ev_loop_fork (EV_A);	3282	ev_loop_fork (EV_A);
2936	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3283	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2937	}	3284	}
2938		3285
…		…
2952	{	3299	{
2953	if (expect_false (ev_is_active (w)))	3300	if (expect_false (ev_is_active (w)))
2954	return;	3301	return;
2955		3302
2956	{	3303	{
2957	struct ev_loop *loop = w->other;	3304	EV_P = w->other;
2958	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3305	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);	3306	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2960	}	3307	}
2961		3308
2962	EV_FREQUENT_CHECK;	3309	EV_FREQUENT_CHECK;
…		…
3074		3421
3075	void	3422	void
3076	ev_async_send (EV_P_ ev_async *w)	3423	ev_async_send (EV_P_ ev_async *w)
3077	{	3424	{
3078	w->sent = 1;	3425	w->sent = 1;
3079	evpipe_write (EV_A_ &gotasync);	3426	evpipe_write (EV_A_ &async_pending);
3080	}	3427	}
3081	#endif	3428	#endif
3082		3429
3083	/*****************************************************************************/	3430	/*****************************************************************************/
3084		3431
…		…
3146	ev_timer_set (&once->to, timeout, 0.);	3493	ev_timer_set (&once->to, timeout, 0.);
3147	ev_timer_start (EV_A_ &once->to);	3494	ev_timer_start (EV_A_ &once->to);
3148	}	3495	}
3149	}	3496	}
3150		3497
		3498	/*****************************************************************************/
		3499
		3500	#if EV_WALK_ENABLE
		3501	void
		3502	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3503	{
		3504	int i, j;
		3505	ev_watcher_list *wl, *wn;
		3506
		3507	if (types & (EV_IO | EV_EMBED))
		3508	for (i = 0; i < anfdmax; ++i)
		3509	for (wl = anfds [i].head; wl; )
		3510	{
		3511	wn = wl->next;
		3512
		3513	#if EV_EMBED_ENABLE
		3514	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3515	{
		3516	if (types & EV_EMBED)
		3517	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3518	}
		3519	else
		3520	#endif
		3521	#if EV_USE_INOTIFY
		3522	if (ev_cb ((ev_io *)wl) == infy_cb)
		3523	;
		3524	else
		3525	#endif
		3526	if ((ev_io *)wl != &pipe_w)
		3527	if (types & EV_IO)
		3528	cb (EV_A_ EV_IO, wl);
		3529
		3530	wl = wn;
		3531	}
		3532
		3533	if (types & (EV_TIMER | EV_STAT))
		3534	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3535	#if EV_STAT_ENABLE
		3536	/*TODO: timer is not always active*/
		3537	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3538	{
		3539	if (types & EV_STAT)
		3540	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3541	}
		3542	else
		3543	#endif
		3544	if (types & EV_TIMER)
		3545	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3546
		3547	#if EV_PERIODIC_ENABLE
		3548	if (types & EV_PERIODIC)
		3549	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3550	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3551	#endif
		3552
		3553	#if EV_IDLE_ENABLE
		3554	if (types & EV_IDLE)
		3555	for (j = NUMPRI; i--; )
		3556	for (i = idlecnt [j]; i--; )
		3557	cb (EV_A_ EV_IDLE, idles [j][i]);
		3558	#endif
		3559
		3560	#if EV_FORK_ENABLE
		3561	if (types & EV_FORK)
		3562	for (i = forkcnt; i--; )
		3563	if (ev_cb (forks [i]) != embed_fork_cb)
		3564	cb (EV_A_ EV_FORK, forks [i]);
		3565	#endif
		3566
		3567	#if EV_ASYNC_ENABLE
		3568	if (types & EV_ASYNC)
		3569	for (i = asynccnt; i--; )
		3570	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3571	#endif
		3572
		3573	if (types & EV_PREPARE)
		3574	for (i = preparecnt; i--; )
		3575	#if EV_EMBED_ENABLE
		3576	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3577	#endif
		3578	cb (EV_A_ EV_PREPARE, prepares [i]);
		3579
		3580	if (types & EV_CHECK)
		3581	for (i = checkcnt; i--; )
		3582	cb (EV_A_ EV_CHECK, checks [i]);
		3583
		3584	if (types & EV_SIGNAL)
		3585	for (i = 0; i < EV_NSIG - 1; ++i)
		3586	for (wl = signals [i].head; wl; )
		3587	{
		3588	wn = wl->next;
		3589	cb (EV_A_ EV_SIGNAL, wl);
		3590	wl = wn;
		3591	}
		3592
		3593	if (types & EV_CHILD)
		3594	for (i = EV_PID_HASHSIZE; i--; )
		3595	for (wl = childs [i]; wl; )
		3596	{
		3597	wn = wl->next;
		3598	cb (EV_A_ EV_CHILD, wl);
		3599	wl = wn;
		3600	}
		3601	/* EV_STAT 0x00001000 /* stat data changed */
		3602	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3603	}
		3604	#endif
		3605
3151	#if EV_MULTIPLICITY	3606	#if EV_MULTIPLICITY
3152	#include "ev_wrap.h"	3607	#include "ev_wrap.h"
3153	#endif	3608	#endif
3154		3609
3155	#ifdef __cplusplus	3610	#ifdef __cplusplus

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