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Comparing libev/ev.c (file contents):
Revision 1.283 by root, Wed Apr 15 09:51:19 2009 UTC vs.
Revision 1.313 by root, Wed Aug 19 23:44:51 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	# ifdef O_CLOEXEC
		392	# define EFD_CLOEXEC O_CLOEXEC
		393	# else
		394	# define EFD_CLOEXEC 02000000
		395	# endif
		396	# endif
337	# ifdef __cplusplus	397	# ifdef __cplusplus
338	extern "C" {	398	extern "C" {
339	# endif	399	# endif
340	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	401	# ifdef __cplusplus
342	}	402	}
343	# endif	403	# endif
		404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	# include <sys/signalfd.h>
344	#endif	408	#endif
345		409
346	/**/	410	/**/
347		411
348	#if EV_VERIFY >= 3	412	#if EV_VERIFY >= 3
…		…
384	# define inline_speed static noinline	448	# define inline_speed static noinline
385	#else	449	#else
386	# define inline_speed static inline	450	# define inline_speed static inline
387	#endif	451	#endif
388		452
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	453	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		454
		455	#if EV_MINPRI == EV_MAXPRI
		456	# define ABSPRI(w) (((W)w), 0)
		457	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	458	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		459	#endif
391		460
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	461	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	462	#define EMPTY2(a,b) /* used to suppress some warnings */
394		463
395	typedef ev_watcher *W;	464	typedef ev_watcher *W;
…		…
407		476
408	#if EV_USE_MONOTONIC	477	#if EV_USE_MONOTONIC
409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	478	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410	#endif	479	#endif
411		480
		481	#ifndef EV_FD_TO_WIN32_HANDLE
		482	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		483	#endif
		484	#ifndef EV_WIN32_HANDLE_TO_FD
		485	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		486	#endif
		487	#ifndef EV_WIN32_CLOSE_FD
		488	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		489	#endif
		490
412	#ifdef _WIN32	491	#ifdef _WIN32
413	# include "ev_win32.c"	492	# include "ev_win32.c"
414	#endif	493	#endif
415		494
416	/*****************************************************************************/	495	/*****************************************************************************/
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	557	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	558	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		559
481	/*****************************************************************************/	560	/*****************************************************************************/
482		561
		562	/* set in reify when reification needed */
		563	#define EV_ANFD_REIFY 1
		564
		565	/* file descriptor info structure */
483	typedef struct	566	typedef struct
484	{	567	{
485	WL head;	568	WL head;
486	unsigned char events;	569	unsigned char events; /* the events watched for */
487	unsigned char reify;	570	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 */	571	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	572	unsigned char unused;
490	#if EV_USE_EPOLL	573	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	574	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	575	#endif
493	#if EV_SELECT_IS_WINSOCKET	576	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	577	SOCKET handle;
495	#endif	578	#endif
496	} ANFD;	579	} ANFD;
497		580
		581	/* stores the pending event set for a given watcher */
498	typedef struct	582	typedef struct
499	{	583	{
500	W w;	584	W w;
501	int events;	585	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	586	} ANPENDING;
503		587
504	#if EV_USE_INOTIFY	588	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	589	/* hash table entry per inotify-id */
506	typedef struct	590	typedef struct
…		…
509	} ANFS;	593	} ANFS;
510	#endif	594	#endif
511		595
512	/* Heap Entry */	596	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	597	#if EV_HEAP_CACHE_AT
		598	/* a heap element */
514	typedef struct {	599	typedef struct {
515	ev_tstamp at;	600	ev_tstamp at;
516	WT w;	601	WT w;
517	} ANHE;	602	} ANHE;
518		603
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	604	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	605	#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 */	606	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	607	#else
		608	/* a heap element */
523	typedef WT ANHE;	609	typedef WT ANHE;
524		610
525	#define ANHE_w(he) (he)	611	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	612	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	613	#define ANHE_at_cache(he)
…		…
551		637
552	static int ev_default_loop_ptr;	638	static int ev_default_loop_ptr;
553		639
554	#endif	640	#endif
555		641
		642	#if EV_MINIMAL < 2
		643	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		644	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		645	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		646	#else
		647	# define EV_RELEASE_CB (void)0
		648	# define EV_ACQUIRE_CB (void)0
		649	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		650	#endif
		651
		652	#define EVUNLOOP_RECURSE 0x80
		653
556	/*****************************************************************************/	654	/*****************************************************************************/
557		655
		656	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	657	ev_tstamp
559	ev_time (void)	658	ev_time (void)
560	{	659	{
561	#if EV_USE_REALTIME	660	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	661	if (expect_true (have_realtime))
…		…
569		668
570	struct timeval tv;	669	struct timeval tv;
571	gettimeofday (&tv, 0);	670	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	671	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	672	}
		673	#endif
574		674
575	ev_tstamp inline_size	675	inline_size ev_tstamp
576	get_clock (void)	676	get_clock (void)
577	{	677	{
578	#if EV_USE_MONOTONIC	678	#if EV_USE_MONOTONIC
579	if (expect_true (have_monotonic))	679	if (expect_true (have_monotonic))
580	{	680	{
…		…
614		714
615	tv.tv_sec = (time_t)delay;	715	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	716	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		717
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	718	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	719	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	720	/* by older ones */
621	select (0, 0, 0, 0, &tv);	721	select (0, 0, 0, 0, &tv);
622	#endif	722	#endif
623	}	723	}
624	}	724	}
625		725
626	/*****************************************************************************/	726	/*****************************************************************************/
627		727
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	728	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		729
630	int inline_size	730	/* find a suitable new size for the given array, */
		731	/* hopefully by rounding to a ncie-to-malloc size */
		732	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	733	array_nextsize (int elem, int cur, int cnt)
632	{	734	{
633	int ncur = cur + 1;	735	int ncur = cur + 1;
634		736
635	do	737	do
…		…
680	#define array_free(stem, idx) \	782	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	783	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		784
683	/*****************************************************************************/	785	/*****************************************************************************/
684		786
		787	/* dummy callback for pending events */
		788	static void noinline
		789	pendingcb (EV_P_ ev_prepare *w, int revents)
		790	{
		791	}
		792
685	void noinline	793	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	794	ev_feed_event (EV_P_ void *w, int revents)
687	{	795	{
688	W w_ = (W)w;	796	W w_ = (W)w;
689	int pri = ABSPRI (w_);	797	int pri = ABSPRI (w_);
…		…
697	pendings [pri][w_->pending - 1].w = w_;	805	pendings [pri][w_->pending - 1].w = w_;
698	pendings [pri][w_->pending - 1].events = revents;	806	pendings [pri][w_->pending - 1].events = revents;
699	}	807	}
700	}	808	}
701		809
702	void inline_speed	810	inline_speed void
		811	feed_reverse (EV_P_ W w)
		812	{
		813	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		814	rfeeds [rfeedcnt++] = w;
		815	}
		816
		817	inline_size void
		818	feed_reverse_done (EV_P_ int revents)
		819	{
		820	do
		821	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		822	while (rfeedcnt);
		823	}
		824
		825	inline_speed void
703	queue_events (EV_P_ W *events, int eventcnt, int type)	826	queue_events (EV_P_ W *events, int eventcnt, int type)
704	{	827	{
705	int i;	828	int i;
706		829
707	for (i = 0; i < eventcnt; ++i)	830	for (i = 0; i < eventcnt; ++i)
708	ev_feed_event (EV_A_ events [i], type);	831	ev_feed_event (EV_A_ events [i], type);
709	}	832	}
710		833
711	/*****************************************************************************/	834	/*****************************************************************************/
712		835
713	void inline_speed	836	inline_speed void
714	fd_event (EV_P_ int fd, int revents)	837	fd_event_nc (EV_P_ int fd, int revents)
715	{	838	{
716	ANFD *anfd = anfds + fd;	839	ANFD *anfd = anfds + fd;
717	ev_io *w;	840	ev_io *w;
718		841
719	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	842	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
723	if (ev)	846	if (ev)
724	ev_feed_event (EV_A_ (W)w, ev);	847	ev_feed_event (EV_A_ (W)w, ev);
725	}	848	}
726	}	849	}
727		850
		851	/* do not submit kernel events for fds that have reify set */
		852	/* because that means they changed while we were polling for new events */
		853	inline_speed void
		854	fd_event (EV_P_ int fd, int revents)
		855	{
		856	ANFD *anfd = anfds + fd;
		857
		858	if (expect_true (!anfd->reify))
		859	fd_event_nc (EV_A_ fd, revents);
		860	}
		861
728	void	862	void
729	ev_feed_fd_event (EV_P_ int fd, int revents)	863	ev_feed_fd_event (EV_P_ int fd, int revents)
730	{	864	{
731	if (fd >= 0 && fd < anfdmax)	865	if (fd >= 0 && fd < anfdmax)
732	fd_event (EV_A_ fd, revents);	866	fd_event_nc (EV_A_ fd, revents);
733	}	867	}
734		868
735	void inline_size	869	/* make sure the external fd watch events are in-sync */
		870	/* with the kernel/libev internal state */
		871	inline_size void
736	fd_reify (EV_P)	872	fd_reify (EV_P)
737	{	873	{
738	int i;	874	int i;
739		875
740	for (i = 0; i < fdchangecnt; ++i)	876	for (i = 0; i < fdchangecnt; ++i)
…		…
750		886
751	#if EV_SELECT_IS_WINSOCKET	887	#if EV_SELECT_IS_WINSOCKET
752	if (events)	888	if (events)
753	{	889	{
754	unsigned long arg;	890	unsigned long arg;
755	#ifdef EV_FD_TO_WIN32_HANDLE
756	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	891	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
757	#else
758	anfd->handle = _get_osfhandle (fd);
759	#endif
760	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	892	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
761	}	893	}
762	#endif	894	#endif
763		895
764	{	896	{
…		…
774	}	906	}
775		907
776	fdchangecnt = 0;	908	fdchangecnt = 0;
777	}	909	}
778		910
779	void inline_size	911	/* something about the given fd changed */
		912	inline_size void
780	fd_change (EV_P_ int fd, int flags)	913	fd_change (EV_P_ int fd, int flags)
781	{	914	{
782	unsigned char reify = anfds [fd].reify;	915	unsigned char reify = anfds [fd].reify;
783	anfds [fd].reify |= flags;	916	anfds [fd].reify |= flags;
784		917
…		…
788	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	921	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
789	fdchanges [fdchangecnt - 1] = fd;	922	fdchanges [fdchangecnt - 1] = fd;
790	}	923	}
791	}	924	}
792		925
793	void inline_speed	926	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		927	inline_speed void
794	fd_kill (EV_P_ int fd)	928	fd_kill (EV_P_ int fd)
795	{	929	{
796	ev_io *w;	930	ev_io *w;
797		931
798	while ((w = (ev_io *)anfds [fd].head))	932	while ((w = (ev_io *)anfds [fd].head))
…		…
800	ev_io_stop (EV_A_ w);	934	ev_io_stop (EV_A_ w);
801	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	935	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
802	}	936	}
803	}	937	}
804		938
805	int inline_size	939	/* check whether the given fd is atcually valid, for error recovery */
		940	inline_size int
806	fd_valid (int fd)	941	fd_valid (int fd)
807	{	942	{
808	#ifdef _WIN32	943	#ifdef _WIN32
809	return _get_osfhandle (fd) != -1;	944	return _get_osfhandle (fd) != -1;
810	#else	945	#else
…		…
832		967
833	for (fd = anfdmax; fd--; )	968	for (fd = anfdmax; fd--; )
834	if (anfds [fd].events)	969	if (anfds [fd].events)
835	{	970	{
836	fd_kill (EV_A_ fd);	971	fd_kill (EV_A_ fd);
837	return;	972	break;
838	}	973	}
839	}	974	}
840		975
841	/* usually called after fork if backend needs to re-arm all fds from scratch */	976	/* usually called after fork if backend needs to re-arm all fds from scratch */
842	static void noinline	977	static void noinline
…		…
847	for (fd = 0; fd < anfdmax; ++fd)	982	for (fd = 0; fd < anfdmax; ++fd)
848	if (anfds [fd].events)	983	if (anfds [fd].events)
849	{	984	{
850	anfds [fd].events = 0;	985	anfds [fd].events = 0;
851	anfds [fd].emask = 0;	986	anfds [fd].emask = 0;
852	fd_change (EV_A_ fd, EV__IOFDSET | 1);	987	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
853	}	988	}
854	}	989	}
855		990
856	/*****************************************************************************/	991	/*****************************************************************************/
857		992
…		…
873	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1008	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
874	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1009	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
875	#define UPHEAP_DONE(p,k) ((p) == (k))	1010	#define UPHEAP_DONE(p,k) ((p) == (k))
876		1011
877	/* away from the root */	1012	/* away from the root */
878	void inline_speed	1013	inline_speed void
879	downheap (ANHE *heap, int N, int k)	1014	downheap (ANHE *heap, int N, int k)
880	{	1015	{
881	ANHE he = heap [k];	1016	ANHE he = heap [k];
882	ANHE *E = heap + N + HEAP0;	1017	ANHE *E = heap + N + HEAP0;
883		1018
…		…
923	#define HEAP0 1	1058	#define HEAP0 1
924	#define HPARENT(k) ((k) >> 1)	1059	#define HPARENT(k) ((k) >> 1)
925	#define UPHEAP_DONE(p,k) (!(p))	1060	#define UPHEAP_DONE(p,k) (!(p))
926		1061
927	/* away from the root */	1062	/* away from the root */
928	void inline_speed	1063	inline_speed void
929	downheap (ANHE *heap, int N, int k)	1064	downheap (ANHE *heap, int N, int k)
930	{	1065	{
931	ANHE he = heap [k];	1066	ANHE he = heap [k];
932		1067
933	for (;;)	1068	for (;;)
934	{	1069	{
935	int c = k << 1;	1070	int c = k << 1;
936		1071
937	if (c > N + HEAP0 - 1)	1072	if (c >= N + HEAP0)
938	break;	1073	break;
939		1074
940	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1075	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
941	? 1 : 0;	1076	? 1 : 0;
942		1077
…		…
953	ev_active (ANHE_w (he)) = k;	1088	ev_active (ANHE_w (he)) = k;
954	}	1089	}
955	#endif	1090	#endif
956		1091
957	/* towards the root */	1092	/* towards the root */
958	void inline_speed	1093	inline_speed void
959	upheap (ANHE *heap, int k)	1094	upheap (ANHE *heap, int k)
960	{	1095	{
961	ANHE he = heap [k];	1096	ANHE he = heap [k];
962		1097
963	for (;;)	1098	for (;;)
…		…
974		1109
975	heap [k] = he;	1110	heap [k] = he;
976	ev_active (ANHE_w (he)) = k;	1111	ev_active (ANHE_w (he)) = k;
977	}	1112	}
978		1113
979	void inline_size	1114	/* move an element suitably so it is in a correct place */
		1115	inline_size void
980	adjustheap (ANHE *heap, int N, int k)	1116	adjustheap (ANHE *heap, int N, int k)
981	{	1117	{
982	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1118	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
983	upheap (heap, k);	1119	upheap (heap, k);
984	else	1120	else
985	downheap (heap, N, k);	1121	downheap (heap, N, k);
986	}	1122	}
987		1123
988	/* rebuild the heap: this function is used only once and executed rarely */	1124	/* rebuild the heap: this function is used only once and executed rarely */
989	void inline_size	1125	inline_size void
990	reheap (ANHE *heap, int N)	1126	reheap (ANHE *heap, int N)
991	{	1127	{
992	int i;	1128	int i;
993		1129
994	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1130	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
…		…
997	upheap (heap, i + HEAP0);	1133	upheap (heap, i + HEAP0);
998	}	1134	}
999		1135
1000	/*****************************************************************************/	1136	/*****************************************************************************/
1001		1137
		1138	/* associate signal watchers to a signal signal */
1002	typedef struct	1139	typedef struct
1003	{	1140	{
		1141	EV_ATOMIC_T pending;
		1142	#if EV_MULTIPLICITY
		1143	EV_P;
		1144	#endif
1004	WL head;	1145	WL head;
1005	EV_ATOMIC_T gotsig;
1006	} ANSIG;	1146	} ANSIG;
1007		1147
1008	static ANSIG *signals;	1148	static ANSIG signals [EV_NSIG - 1];
1009	static int signalmax;
1010
1011	static EV_ATOMIC_T gotsig;
1012		1149
1013	/*****************************************************************************/	1150	/*****************************************************************************/
1014		1151
1015	void inline_speed	1152	/* used to prepare libev internal fd's */
		1153	/* this is not fork-safe */
		1154	inline_speed void
1016	fd_intern (int fd)	1155	fd_intern (int fd)
1017	{	1156	{
1018	#ifdef _WIN32	1157	#ifdef _WIN32
1019	unsigned long arg = 1;	1158	unsigned long arg = 1;
1020	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1159	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
…		…
1025	}	1164	}
1026		1165
1027	static void noinline	1166	static void noinline
1028	evpipe_init (EV_P)	1167	evpipe_init (EV_P)
1029	{	1168	{
1030	if (!ev_is_active (&pipeev))	1169	if (!ev_is_active (&pipe_w))
1031	{	1170	{
1032	#if EV_USE_EVENTFD	1171	#if EV_USE_EVENTFD
		1172	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1173	if (evfd < 0 && errno == EINVAL)
1033	if ((evfd = eventfd (0, 0)) >= 0)	1174	evfd = eventfd (0, 0);
		1175
		1176	if (evfd >= 0)
1034	{	1177	{
1035	evpipe [0] = -1;	1178	evpipe [0] = -1;
1036	fd_intern (evfd);	1179	fd_intern (evfd); /* doing it twice doesn't hurt */
1037	ev_io_set (&pipeev, evfd, EV_READ);	1180	ev_io_set (&pipe_w, evfd, EV_READ);
1038	}	1181	}
1039	else	1182	else
1040	#endif	1183	#endif
1041	{	1184	{
1042	while (pipe (evpipe))	1185	while (pipe (evpipe))
1043	ev_syserr ("(libev) error creating signal/async pipe");	1186	ev_syserr ("(libev) error creating signal/async pipe");
1044		1187
1045	fd_intern (evpipe [0]);	1188	fd_intern (evpipe [0]);
1046	fd_intern (evpipe [1]);	1189	fd_intern (evpipe [1]);
1047	ev_io_set (&pipeev, evpipe [0], EV_READ);	1190	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1048	}	1191	}
1049		1192
1050	ev_io_start (EV_A_ &pipeev);	1193	ev_io_start (EV_A_ &pipe_w);
1051	ev_unref (EV_A); /* watcher should not keep loop alive */	1194	ev_unref (EV_A); /* watcher should not keep loop alive */
1052	}	1195	}
1053	}	1196	}
1054		1197
1055	void inline_size	1198	inline_size void
1056	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1199	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1057	{	1200	{
1058	if (!*flag)	1201	if (!*flag)
1059	{	1202	{
1060	int old_errno = errno; /* save errno because write might clobber it */	1203	int old_errno = errno; /* save errno because write might clobber it */
…		…
1073		1216
1074	errno = old_errno;	1217	errno = old_errno;
1075	}	1218	}
1076	}	1219	}
1077		1220
		1221	/* called whenever the libev signal pipe */
		1222	/* got some events (signal, async) */
1078	static void	1223	static void
1079	pipecb (EV_P_ ev_io *iow, int revents)	1224	pipecb (EV_P_ ev_io *iow, int revents)
1080	{	1225	{
		1226	int i;
		1227
1081	#if EV_USE_EVENTFD	1228	#if EV_USE_EVENTFD
1082	if (evfd >= 0)	1229	if (evfd >= 0)
1083	{	1230	{
1084	uint64_t counter;	1231	uint64_t counter;
1085	read (evfd, &counter, sizeof (uint64_t));	1232	read (evfd, &counter, sizeof (uint64_t));
…		…
1089	{	1236	{
1090	char dummy;	1237	char dummy;
1091	read (evpipe [0], &dummy, 1);	1238	read (evpipe [0], &dummy, 1);
1092	}	1239	}
1093		1240
1094	if (gotsig && ev_is_default_loop (EV_A))	1241	if (sig_pending)
1095	{	1242	{
1096	int signum;	1243	sig_pending = 0;
1097	gotsig = 0;
1098		1244
1099	for (signum = signalmax; signum--; )	1245	for (i = EV_NSIG - 1; i--; )
1100	if (signals [signum].gotsig)	1246	if (expect_false (signals [i].pending))
1101	ev_feed_signal_event (EV_A_ signum + 1);	1247	ev_feed_signal_event (EV_A_ i + 1);
1102	}	1248	}
1103		1249
1104	#if EV_ASYNC_ENABLE	1250	#if EV_ASYNC_ENABLE
1105	if (gotasync)	1251	if (async_pending)
1106	{	1252	{
1107	int i;	1253	async_pending = 0;
1108	gotasync = 0;
1109		1254
1110	for (i = asynccnt; i--; )	1255	for (i = asynccnt; i--; )
1111	if (asyncs [i]->sent)	1256	if (asyncs [i]->sent)
1112	{	1257	{
1113	asyncs [i]->sent = 0;	1258	asyncs [i]->sent = 0;
…		…
1121		1266
1122	static void	1267	static void
1123	ev_sighandler (int signum)	1268	ev_sighandler (int signum)
1124	{	1269	{
1125	#if EV_MULTIPLICITY	1270	#if EV_MULTIPLICITY
1126	struct ev_loop *loop = &default_loop_struct;	1271	EV_P = signals [signum - 1].loop;
1127	#endif	1272	#endif
1128		1273
1129	#if _WIN32	1274	#if _WIN32
1130	signal (signum, ev_sighandler);	1275	signal (signum, ev_sighandler);
1131	#endif	1276	#endif
1132		1277
1133	signals [signum - 1].gotsig = 1;	1278	signals [signum - 1].pending = 1;
1134	evpipe_write (EV_A_ &gotsig);	1279	evpipe_write (EV_A_ &sig_pending);
1135	}	1280	}
1136		1281
1137	void noinline	1282	void noinline
1138	ev_feed_signal_event (EV_P_ int signum)	1283	ev_feed_signal_event (EV_P_ int signum)
1139	{	1284	{
1140	WL w;	1285	WL w;
1141		1286
		1287	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1288	return;
		1289
		1290	--signum;
		1291
1142	#if EV_MULTIPLICITY	1292	#if EV_MULTIPLICITY
1143	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1293	/* it is permissible to try to feed a signal to the wrong loop */
1144	#endif	1294	/* or, likely more useful, feeding a signal nobody is waiting for */
1145		1295
1146	--signum;	1296	if (expect_false (signals [signum].loop != EV_A))
1147
1148	if (signum < 0 || signum >= signalmax)
1149	return;	1297	return;
		1298	#endif
1150		1299
1151	signals [signum].gotsig = 0;	1300	signals [signum].pending = 0;
1152		1301
1153	for (w = signals [signum].head; w; w = w->next)	1302	for (w = signals [signum].head; w; w = w->next)
1154	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1303	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1155	}	1304	}
1156		1305
		1306	#if EV_USE_SIGNALFD
		1307	static void
		1308	sigfdcb (EV_P_ ev_io *iow, int revents)
		1309	{
		1310	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1311
		1312	for (;;)
		1313	{
		1314	ssize_t res = read (sigfd, si, sizeof (si));
		1315
		1316	/* not ISO-C, as res might be -1, but works with SuS */
		1317	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1318	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1319
		1320	if (res < (ssize_t)sizeof (si))
		1321	break;
		1322	}
		1323	}
		1324	#endif
		1325
1157	/*****************************************************************************/	1326	/*****************************************************************************/
1158		1327
1159	static WL childs [EV_PID_HASHSIZE];	1328	static WL childs [EV_PID_HASHSIZE];
1160		1329
1161	#ifndef _WIN32	1330	#ifndef _WIN32
…		…
1164		1333
1165	#ifndef WIFCONTINUED	1334	#ifndef WIFCONTINUED
1166	# define WIFCONTINUED(status) 0	1335	# define WIFCONTINUED(status) 0
1167	#endif	1336	#endif
1168		1337
1169	void inline_speed	1338	/* handle a single child status event */
		1339	inline_speed void
1170	child_reap (EV_P_ int chain, int pid, int status)	1340	child_reap (EV_P_ int chain, int pid, int status)
1171	{	1341	{
1172	ev_child *w;	1342	ev_child *w;
1173	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1343	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1174		1344
…		…
1187		1357
1188	#ifndef WCONTINUED	1358	#ifndef WCONTINUED
1189	# define WCONTINUED 0	1359	# define WCONTINUED 0
1190	#endif	1360	#endif
1191		1361
		1362	/* called on sigchld etc., calls waitpid */
1192	static void	1363	static void
1193	childcb (EV_P_ ev_signal *sw, int revents)	1364	childcb (EV_P_ ev_signal *sw, int revents)
1194	{	1365	{
1195	int pid, status;	1366	int pid, status;
1196		1367
…		…
1303	ev_backend (EV_P)	1474	ev_backend (EV_P)
1304	{	1475	{
1305	return backend;	1476	return backend;
1306	}	1477	}
1307		1478
		1479	#if EV_MINIMAL < 2
1308	unsigned int	1480	unsigned int
1309	ev_loop_count (EV_P)	1481	ev_loop_count (EV_P)
1310	{	1482	{
1311	return loop_count;	1483	return loop_count;
1312	}	1484	}
1313		1485
		1486	unsigned int
		1487	ev_loop_depth (EV_P)
		1488	{
		1489	return loop_depth;
		1490	}
		1491
1314	void	1492	void
1315	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1493	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1316	{	1494	{
1317	io_blocktime = interval;	1495	io_blocktime = interval;
1318	}	1496	}
…		…
1321	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1499	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1322	{	1500	{
1323	timeout_blocktime = interval;	1501	timeout_blocktime = interval;
1324	}	1502	}
1325		1503
		1504	void
		1505	ev_set_userdata (EV_P_ void *data)
		1506	{
		1507	userdata = data;
		1508	}
		1509
		1510	void *
		1511	ev_userdata (EV_P)
		1512	{
		1513	return userdata;
		1514	}
		1515
		1516	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1517	{
		1518	invoke_cb = invoke_pending_cb;
		1519	}
		1520
		1521	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1522	{
		1523	release_cb = release;
		1524	acquire_cb = acquire;
		1525	}
		1526	#endif
		1527
		1528	/* initialise a loop structure, must be zero-initialised */
1326	static void noinline	1529	static void noinline
1327	loop_init (EV_P_ unsigned int flags)	1530	loop_init (EV_P_ unsigned int flags)
1328	{	1531	{
1329	if (!backend)	1532	if (!backend)
1330	{	1533	{
…		…
1346	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1549	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1347	have_monotonic = 1;	1550	have_monotonic = 1;
1348	}	1551	}
1349	#endif	1552	#endif
1350		1553
		1554	/* pid check not overridable via env */
		1555	#ifndef _WIN32
		1556	if (flags & EVFLAG_FORKCHECK)
		1557	curpid = getpid ();
		1558	#endif
		1559
		1560	if (!(flags & EVFLAG_NOENV)
		1561	&& !enable_secure ()
		1562	&& getenv ("LIBEV_FLAGS"))
		1563	flags = atoi (getenv ("LIBEV_FLAGS"));
		1564
1351	ev_rt_now = ev_time ();	1565	ev_rt_now = ev_time ();
1352	mn_now = get_clock ();	1566	mn_now = get_clock ();
1353	now_floor = mn_now;	1567	now_floor = mn_now;
1354	rtmn_diff = ev_rt_now - mn_now;	1568	rtmn_diff = ev_rt_now - mn_now;
		1569	#if EV_MINIMAL < 2
		1570	invoke_cb = ev_invoke_pending;
		1571	#endif
1355		1572
1356	io_blocktime = 0.;	1573	io_blocktime = 0.;
1357	timeout_blocktime = 0.;	1574	timeout_blocktime = 0.;
1358	backend = 0;	1575	backend = 0;
1359	backend_fd = -1;	1576	backend_fd = -1;
1360	gotasync = 0;	1577	sig_pending = 0;
		1578	#if EV_ASYNC_ENABLE
		1579	async_pending = 0;
		1580	#endif
1361	#if EV_USE_INOTIFY	1581	#if EV_USE_INOTIFY
1362	fs_fd = -2;	1582	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1363	#endif	1583	#endif
1364		1584	#if EV_USE_SIGNALFD
1365	/* pid check not overridable via env */	1585	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1366	#ifndef _WIN32
1367	if (flags & EVFLAG_FORKCHECK)
1368	curpid = getpid ();
1369	#endif	1586	#endif
1370
1371	if (!(flags & EVFLAG_NOENV)
1372	&& !enable_secure ()
1373	&& getenv ("LIBEV_FLAGS"))
1374	flags = atoi (getenv ("LIBEV_FLAGS"));
1375		1587
1376	if (!(flags & 0x0000ffffU))	1588	if (!(flags & 0x0000ffffU))
1377	flags |= ev_recommended_backends ();	1589	flags |= ev_recommended_backends ();
1378		1590
1379	#if EV_USE_PORT	1591	#if EV_USE_PORT
…		…
1390	#endif	1602	#endif
1391	#if EV_USE_SELECT	1603	#if EV_USE_SELECT
1392	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1604	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1393	#endif	1605	#endif
1394		1606
		1607	ev_prepare_init (&pending_w, pendingcb);
		1608
1395	ev_init (&pipeev, pipecb);	1609	ev_init (&pipe_w, pipecb);
1396	ev_set_priority (&pipeev, EV_MAXPRI);	1610	ev_set_priority (&pipe_w, EV_MAXPRI);
1397	}	1611	}
1398	}	1612	}
1399		1613
		1614	/* free up a loop structure */
1400	static void noinline	1615	static void noinline
1401	loop_destroy (EV_P)	1616	loop_destroy (EV_P)
1402	{	1617	{
1403	int i;	1618	int i;
1404		1619
1405	if (ev_is_active (&pipeev))	1620	if (ev_is_active (&pipe_w))
1406	{	1621	{
1407	ev_ref (EV_A); /* signal watcher */	1622	/*ev_ref (EV_A);*/
1408	ev_io_stop (EV_A_ &pipeev);	1623	/*ev_io_stop (EV_A_ &pipe_w);*/
1409		1624
1410	#if EV_USE_EVENTFD	1625	#if EV_USE_EVENTFD
1411	if (evfd >= 0)	1626	if (evfd >= 0)
1412	close (evfd);	1627	close (evfd);
1413	#endif	1628	#endif
1414		1629
1415	if (evpipe [0] >= 0)	1630	if (evpipe [0] >= 0)
1416	{	1631	{
1417	close (evpipe [0]);	1632	EV_WIN32_CLOSE_FD (evpipe [0]);
1418	close (evpipe [1]);	1633	EV_WIN32_CLOSE_FD (evpipe [1]);
1419	}	1634	}
1420	}	1635	}
		1636
		1637	#if EV_USE_SIGNALFD
		1638	if (ev_is_active (&sigfd_w))
		1639	{
		1640	/*ev_ref (EV_A);*/
		1641	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1642
		1643	close (sigfd);
		1644	}
		1645	#endif
1421		1646
1422	#if EV_USE_INOTIFY	1647	#if EV_USE_INOTIFY
1423	if (fs_fd >= 0)	1648	if (fs_fd >= 0)
1424	close (fs_fd);	1649	close (fs_fd);
1425	#endif	1650	#endif
…		…
1449	#if EV_IDLE_ENABLE	1674	#if EV_IDLE_ENABLE
1450	array_free (idle, [i]);	1675	array_free (idle, [i]);
1451	#endif	1676	#endif
1452	}	1677	}
1453		1678
1454	ev_free (anfds); anfdmax = 0;	1679	ev_free (anfds); anfds = 0; anfdmax = 0;
1455		1680
1456	/* have to use the microsoft-never-gets-it-right macro */	1681	/* have to use the microsoft-never-gets-it-right macro */
		1682	array_free (rfeed, EMPTY);
1457	array_free (fdchange, EMPTY);	1683	array_free (fdchange, EMPTY);
1458	array_free (timer, EMPTY);	1684	array_free (timer, EMPTY);
1459	#if EV_PERIODIC_ENABLE	1685	#if EV_PERIODIC_ENABLE
1460	array_free (periodic, EMPTY);	1686	array_free (periodic, EMPTY);
1461	#endif	1687	#endif
…		…
1470		1696
1471	backend = 0;	1697	backend = 0;
1472	}	1698	}
1473		1699
1474	#if EV_USE_INOTIFY	1700	#if EV_USE_INOTIFY
1475	void inline_size infy_fork (EV_P);	1701	inline_size void infy_fork (EV_P);
1476	#endif	1702	#endif
1477		1703
1478	void inline_size	1704	inline_size void
1479	loop_fork (EV_P)	1705	loop_fork (EV_P)
1480	{	1706	{
1481	#if EV_USE_PORT	1707	#if EV_USE_PORT
1482	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1708	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1483	#endif	1709	#endif
…		…
1489	#endif	1715	#endif
1490	#if EV_USE_INOTIFY	1716	#if EV_USE_INOTIFY
1491	infy_fork (EV_A);	1717	infy_fork (EV_A);
1492	#endif	1718	#endif
1493		1719
1494	if (ev_is_active (&pipeev))	1720	if (ev_is_active (&pipe_w))
1495	{	1721	{
1496	/* this "locks" the handlers against writing to the pipe */	1722	/* this "locks" the handlers against writing to the pipe */
1497	/* while we modify the fd vars */	1723	/* while we modify the fd vars */
1498	gotsig = 1;	1724	sig_pending = 1;
1499	#if EV_ASYNC_ENABLE	1725	#if EV_ASYNC_ENABLE
1500	gotasync = 1;	1726	async_pending = 1;
1501	#endif	1727	#endif
1502		1728
1503	ev_ref (EV_A);	1729	ev_ref (EV_A);
1504	ev_io_stop (EV_A_ &pipeev);	1730	ev_io_stop (EV_A_ &pipe_w);
1505		1731
1506	#if EV_USE_EVENTFD	1732	#if EV_USE_EVENTFD
1507	if (evfd >= 0)	1733	if (evfd >= 0)
1508	close (evfd);	1734	close (evfd);
1509	#endif	1735	#endif
1510		1736
1511	if (evpipe [0] >= 0)	1737	if (evpipe [0] >= 0)
1512	{	1738	{
1513	close (evpipe [0]);	1739	EV_WIN32_CLOSE_FD (evpipe [0]);
1514	close (evpipe [1]);	1740	EV_WIN32_CLOSE_FD (evpipe [1]);
1515	}	1741	}
1516		1742
1517	evpipe_init (EV_A);	1743	evpipe_init (EV_A);
1518	/* now iterate over everything, in case we missed something */	1744	/* now iterate over everything, in case we missed something */
1519	pipecb (EV_A_ &pipeev, EV_READ);	1745	pipecb (EV_A_ &pipe_w, EV_READ);
1520	}	1746	}
1521		1747
1522	postfork = 0;	1748	postfork = 0;
1523	}	1749	}
1524		1750
1525	#if EV_MULTIPLICITY	1751	#if EV_MULTIPLICITY
1526		1752
1527	struct ev_loop *	1753	struct ev_loop *
1528	ev_loop_new (unsigned int flags)	1754	ev_loop_new (unsigned int flags)
1529	{	1755	{
1530	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1756	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1531		1757
1532	memset (loop, 0, sizeof (struct ev_loop));	1758	memset (EV_A, 0, sizeof (struct ev_loop));
1533
1534	loop_init (EV_A_ flags);	1759	loop_init (EV_A_ flags);
1535		1760
1536	if (ev_backend (EV_A))	1761	if (ev_backend (EV_A))
1537	return loop;	1762	return EV_A;
1538		1763
1539	return 0;	1764	return 0;
1540	}	1765	}
1541		1766
1542	void	1767	void
…		…
1549	void	1774	void
1550	ev_loop_fork (EV_P)	1775	ev_loop_fork (EV_P)
1551	{	1776	{
1552	postfork = 1; /* must be in line with ev_default_fork */	1777	postfork = 1; /* must be in line with ev_default_fork */
1553	}	1778	}
		1779	#endif /* multiplicity */
1554		1780
1555	#if EV_VERIFY	1781	#if EV_VERIFY
1556	static void noinline	1782	static void noinline
1557	verify_watcher (EV_P_ W w)	1783	verify_watcher (EV_P_ W w)
1558	{	1784	{
…		…
1586	verify_watcher (EV_A_ ws [cnt]);	1812	verify_watcher (EV_A_ ws [cnt]);
1587	}	1813	}
1588	}	1814	}
1589	#endif	1815	#endif
1590		1816
		1817	#if EV_MINIMAL < 2
1591	void	1818	void
1592	ev_loop_verify (EV_P)	1819	ev_loop_verify (EV_P)
1593	{	1820	{
1594	#if EV_VERIFY	1821	#if EV_VERIFY
1595	int i;	1822	int i;
…		…
1644	assert (checkmax >= checkcnt);	1871	assert (checkmax >= checkcnt);
1645	array_verify (EV_A_ (W *)checks, checkcnt);	1872	array_verify (EV_A_ (W *)checks, checkcnt);
1646		1873
1647	# if 0	1874	# if 0
1648	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1875	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)	1876	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1650	# endif	1877	# endif
1651	#endif	1878	#endif
1652	}	1879	}
1653		1880	#endif
1654	#endif /* multiplicity */
1655		1881
1656	#if EV_MULTIPLICITY	1882	#if EV_MULTIPLICITY
1657	struct ev_loop *	1883	struct ev_loop *
1658	ev_default_loop_init (unsigned int flags)	1884	ev_default_loop_init (unsigned int flags)
1659	#else	1885	#else
…		…
1662	#endif	1888	#endif
1663	{	1889	{
1664	if (!ev_default_loop_ptr)	1890	if (!ev_default_loop_ptr)
1665	{	1891	{
1666	#if EV_MULTIPLICITY	1892	#if EV_MULTIPLICITY
1667	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1893	EV_P = ev_default_loop_ptr = &default_loop_struct;
1668	#else	1894	#else
1669	ev_default_loop_ptr = 1;	1895	ev_default_loop_ptr = 1;
1670	#endif	1896	#endif
1671		1897
1672	loop_init (EV_A_ flags);	1898	loop_init (EV_A_ flags);
…		…
1689		1915
1690	void	1916	void
1691	ev_default_destroy (void)	1917	ev_default_destroy (void)
1692	{	1918	{
1693	#if EV_MULTIPLICITY	1919	#if EV_MULTIPLICITY
1694	struct ev_loop *loop = ev_default_loop_ptr;	1920	EV_P = ev_default_loop_ptr;
1695	#endif	1921	#endif
1696		1922
1697	ev_default_loop_ptr = 0;	1923	ev_default_loop_ptr = 0;
1698		1924
1699	#ifndef _WIN32	1925	#ifndef _WIN32
…		…
1706		1932
1707	void	1933	void
1708	ev_default_fork (void)	1934	ev_default_fork (void)
1709	{	1935	{
1710	#if EV_MULTIPLICITY	1936	#if EV_MULTIPLICITY
1711	struct ev_loop *loop = ev_default_loop_ptr;	1937	EV_P = ev_default_loop_ptr;
1712	#endif	1938	#endif
1713		1939
1714	postfork = 1; /* must be in line with ev_loop_fork */	1940	postfork = 1; /* must be in line with ev_loop_fork */
1715	}	1941	}
1716		1942
…		…
1720	ev_invoke (EV_P_ void *w, int revents)	1946	ev_invoke (EV_P_ void *w, int revents)
1721	{	1947	{
1722	EV_CB_INVOKE ((W)w, revents);	1948	EV_CB_INVOKE ((W)w, revents);
1723	}	1949	}
1724		1950
1725	void inline_speed	1951	unsigned int
1726	call_pending (EV_P)	1952	ev_pending_count (EV_P)
		1953	{
		1954	int pri;
		1955	unsigned int count = 0;
		1956
		1957	for (pri = NUMPRI; pri--; )
		1958	count += pendingcnt [pri];
		1959
		1960	return count;
		1961	}
		1962
		1963	void noinline
		1964	ev_invoke_pending (EV_P)
1727	{	1965	{
1728	int pri;	1966	int pri;
1729		1967
1730	for (pri = NUMPRI; pri--; )	1968	for (pri = NUMPRI; pri--; )
1731	while (pendingcnt [pri])	1969	while (pendingcnt [pri])
1732	{	1970	{
1733	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1971	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1734		1972
1735	if (expect_true (p->w))
1736	{
1737	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	1973	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1974	/* ^ this is no longer true, as pending_w could be here */
1738		1975
1739	p->w->pending = 0;	1976	p->w->pending = 0;
1740	EV_CB_INVOKE (p->w, p->events);	1977	EV_CB_INVOKE (p->w, p->events);
1741	EV_FREQUENT_CHECK;	1978	EV_FREQUENT_CHECK;
1742	}
1743	}	1979	}
1744	}	1980	}
1745		1981
1746	#if EV_IDLE_ENABLE	1982	#if EV_IDLE_ENABLE
1747	void inline_size	1983	/* make idle watchers pending. this handles the "call-idle */
		1984	/* only when higher priorities are idle" logic */
		1985	inline_size void
1748	idle_reify (EV_P)	1986	idle_reify (EV_P)
1749	{	1987	{
1750	if (expect_false (idleall))	1988	if (expect_false (idleall))
1751	{	1989	{
1752	int pri;	1990	int pri;
…		…
1764	}	2002	}
1765	}	2003	}
1766	}	2004	}
1767	#endif	2005	#endif
1768		2006
1769	void inline_size	2007	/* make timers pending */
		2008	inline_size void
1770	timers_reify (EV_P)	2009	timers_reify (EV_P)
1771	{	2010	{
1772	EV_FREQUENT_CHECK;	2011	EV_FREQUENT_CHECK;
1773		2012
1774	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2013	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1775	{	2014	{
1776	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2015	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	{	2016	{
		2017	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2018
		2019	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2020
		2021	/* first reschedule or stop timer */
		2022	if (w->repeat)
		2023	{
1783	ev_at (w) += w->repeat;	2024	ev_at (w) += w->repeat;
1784	if (ev_at (w) < mn_now)	2025	if (ev_at (w) < mn_now)
1785	ev_at (w) = mn_now;	2026	ev_at (w) = mn_now;
1786		2027
1787	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2028	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1788		2029
1789	ANHE_at_cache (timers [HEAP0]);	2030	ANHE_at_cache (timers [HEAP0]);
1790	downheap (timers, timercnt, HEAP0);	2031	downheap (timers, timercnt, HEAP0);
		2032	}
		2033	else
		2034	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2035
		2036	EV_FREQUENT_CHECK;
		2037	feed_reverse (EV_A_ (W)w);
1791	}	2038	}
1792	else	2039	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1793	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1794		2040
1795	EV_FREQUENT_CHECK;
1796	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2041	feed_reverse_done (EV_A_ EV_TIMEOUT);
1797	}	2042	}
1798	}	2043	}
1799		2044
1800	#if EV_PERIODIC_ENABLE	2045	#if EV_PERIODIC_ENABLE
1801	void inline_size	2046	/* make periodics pending */
		2047	inline_size void
1802	periodics_reify (EV_P)	2048	periodics_reify (EV_P)
1803	{	2049	{
1804	EV_FREQUENT_CHECK;	2050	EV_FREQUENT_CHECK;
1805		2051
1806	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2052	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1807	{	2053	{
1808	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2054	int feed_count = 0;
1809		2055
1810	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/	2056	do
1811
1812	/* first reschedule or stop timer */
1813	if (w->reschedule_cb)
1814	{	2057	{
		2058	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2059
		2060	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2061
		2062	/* first reschedule or stop timer */
		2063	if (w->reschedule_cb)
		2064	{
1815	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2065	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1816		2066
1817	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2067	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1818		2068
1819	ANHE_at_cache (periodics [HEAP0]);	2069	ANHE_at_cache (periodics [HEAP0]);
1820	downheap (periodics, periodiccnt, HEAP0);	2070	downheap (periodics, periodiccnt, HEAP0);
		2071	}
		2072	else if (w->interval)
		2073	{
		2074	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2075	/* if next trigger time is not sufficiently in the future, put it there */
		2076	/* this might happen because of floating point inexactness */
		2077	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2078	{
		2079	ev_at (w) += w->interval;
		2080
		2081	/* if interval is unreasonably low we might still have a time in the past */
		2082	/* so correct this. this will make the periodic very inexact, but the user */
		2083	/* has effectively asked to get triggered more often than possible */
		2084	if (ev_at (w) < ev_rt_now)
		2085	ev_at (w) = ev_rt_now;
		2086	}
		2087
		2088	ANHE_at_cache (periodics [HEAP0]);
		2089	downheap (periodics, periodiccnt, HEAP0);
		2090	}
		2091	else
		2092	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2093
		2094	EV_FREQUENT_CHECK;
		2095	feed_reverse (EV_A_ (W)w);
1821	}	2096	}
1822	else if (w->interval)	2097	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		2098
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);	2099	feed_reverse_done (EV_A_ EV_PERIODIC);
1846	}	2100	}
1847	}	2101	}
1848		2102
		2103	/* simply recalculate all periodics */
		2104	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1849	static void noinline	2105	static void noinline
1850	periodics_reschedule (EV_P)	2106	periodics_reschedule (EV_P)
1851	{	2107	{
1852	int i;	2108	int i;
1853		2109
…		…
1866		2122
1867	reheap (periodics, periodiccnt);	2123	reheap (periodics, periodiccnt);
1868	}	2124	}
1869	#endif	2125	#endif
1870		2126
1871	void inline_speed	2127	/* adjust all timers by a given offset */
		2128	static void noinline
		2129	timers_reschedule (EV_P_ ev_tstamp adjust)
		2130	{
		2131	int i;
		2132
		2133	for (i = 0; i < timercnt; ++i)
		2134	{
		2135	ANHE *he = timers + i + HEAP0;
		2136	ANHE_w (*he)->at += adjust;
		2137	ANHE_at_cache (*he);
		2138	}
		2139	}
		2140
		2141	/* fetch new monotonic and realtime times from the kernel */
		2142	/* also detetc if there was a timejump, and act accordingly */
		2143	inline_speed void
1872	time_update (EV_P_ ev_tstamp max_block)	2144	time_update (EV_P_ ev_tstamp max_block)
1873	{	2145	{
1874	int i;
1875
1876	#if EV_USE_MONOTONIC	2146	#if EV_USE_MONOTONIC
1877	if (expect_true (have_monotonic))	2147	if (expect_true (have_monotonic))
1878	{	2148	{
		2149	int i;
1879	ev_tstamp odiff = rtmn_diff;	2150	ev_tstamp odiff = rtmn_diff;
1880		2151
1881	mn_now = get_clock ();	2152	mn_now = get_clock ();
1882		2153
1883	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2154	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1909	ev_rt_now = ev_time ();	2180	ev_rt_now = ev_time ();
1910	mn_now = get_clock ();	2181	mn_now = get_clock ();
1911	now_floor = mn_now;	2182	now_floor = mn_now;
1912	}	2183	}
1913		2184
		2185	/* no timer adjustment, as the monotonic clock doesn't jump */
		2186	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1914	# if EV_PERIODIC_ENABLE	2187	# if EV_PERIODIC_ENABLE
1915	periodics_reschedule (EV_A);	2188	periodics_reschedule (EV_A);
1916	# endif	2189	# endif
1917	/* no timer adjustment, as the monotonic clock doesn't jump */
1918	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1919	}	2190	}
1920	else	2191	else
1921	#endif	2192	#endif
1922	{	2193	{
1923	ev_rt_now = ev_time ();	2194	ev_rt_now = ev_time ();
1924		2195
1925	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2196	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1926	{	2197	{
		2198	/* adjust timers. this is easy, as the offset is the same for all of them */
		2199	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1927	#if EV_PERIODIC_ENABLE	2200	#if EV_PERIODIC_ENABLE
1928	periodics_reschedule (EV_A);	2201	periodics_reschedule (EV_A);
1929	#endif	2202	#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	}	2203	}
1938		2204
1939	mn_now = ev_rt_now;	2205	mn_now = ev_rt_now;
1940	}	2206	}
1941	}	2207	}
1942		2208
1943	void	2209	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)	2210	ev_loop (EV_P_ int flags)
1965	{	2211	{
		2212	#if EV_MINIMAL < 2
		2213	++loop_depth;
		2214	#endif
		2215
		2216	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2217
1966	loop_done = EVUNLOOP_CANCEL;	2218	loop_done = EVUNLOOP_CANCEL;
1967		2219
1968	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2220	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1969		2221
1970	do	2222	do
1971	{	2223	{
1972	#if EV_VERIFY >= 2	2224	#if EV_VERIFY >= 2
1973	ev_loop_verify (EV_A);	2225	ev_loop_verify (EV_A);
…		…
1986	/* we might have forked, so queue fork handlers */	2238	/* we might have forked, so queue fork handlers */
1987	if (expect_false (postfork))	2239	if (expect_false (postfork))
1988	if (forkcnt)	2240	if (forkcnt)
1989	{	2241	{
1990	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2242	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1991	call_pending (EV_A);	2243	EV_INVOKE_PENDING;
1992	}	2244	}
1993	#endif	2245	#endif
1994		2246
1995	/* queue prepare watchers (and execute them) */	2247	/* queue prepare watchers (and execute them) */
1996	if (expect_false (preparecnt))	2248	if (expect_false (preparecnt))
1997	{	2249	{
1998	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2250	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1999	call_pending (EV_A);	2251	EV_INVOKE_PENDING;
2000	}	2252	}
		2253
		2254	if (expect_false (loop_done))
		2255	break;
2001		2256
2002	/* we might have forked, so reify kernel state if necessary */	2257	/* we might have forked, so reify kernel state if necessary */
2003	if (expect_false (postfork))	2258	if (expect_false (postfork))
2004	loop_fork (EV_A);	2259	loop_fork (EV_A);
2005		2260
…		…
2011	ev_tstamp waittime = 0.;	2266	ev_tstamp waittime = 0.;
2012	ev_tstamp sleeptime = 0.;	2267	ev_tstamp sleeptime = 0.;
2013		2268
2014	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2269	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2015	{	2270	{
		2271	/* remember old timestamp for io_blocktime calculation */
		2272	ev_tstamp prev_mn_now = mn_now;
		2273
2016	/* update time to cancel out callback processing overhead */	2274	/* update time to cancel out callback processing overhead */
2017	time_update (EV_A_ 1e100);	2275	time_update (EV_A_ 1e100);
2018		2276
2019	waittime = MAX_BLOCKTIME;	2277	waittime = MAX_BLOCKTIME;
2020		2278
…		…
2030	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2288	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2031	if (waittime > to) waittime = to;	2289	if (waittime > to) waittime = to;
2032	}	2290	}
2033	#endif	2291	#endif
2034		2292
		2293	/* don't let timeouts decrease the waittime below timeout_blocktime */
2035	if (expect_false (waittime < timeout_blocktime))	2294	if (expect_false (waittime < timeout_blocktime))
2036	waittime = timeout_blocktime;	2295	waittime = timeout_blocktime;
2037		2296
2038	sleeptime = waittime - backend_fudge;	2297	/* extra check because io_blocktime is commonly 0 */
2039
2040	if (expect_true (sleeptime > io_blocktime))	2298	if (expect_false (io_blocktime))
2041	sleeptime = io_blocktime;
2042
2043	if (sleeptime)
2044	{	2299	{
		2300	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2301
		2302	if (sleeptime > waittime - backend_fudge)
		2303	sleeptime = waittime - backend_fudge;
		2304
		2305	if (expect_true (sleeptime > 0.))
		2306	{
2045	ev_sleep (sleeptime);	2307	ev_sleep (sleeptime);
2046	waittime -= sleeptime;	2308	waittime -= sleeptime;
		2309	}
2047	}	2310	}
2048	}	2311	}
2049		2312
		2313	#if EV_MINIMAL < 2
2050	++loop_count;	2314	++loop_count;
		2315	#endif
		2316	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2051	backend_poll (EV_A_ waittime);	2317	backend_poll (EV_A_ waittime);
		2318	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2052		2319
2053	/* update ev_rt_now, do magic */	2320	/* update ev_rt_now, do magic */
2054	time_update (EV_A_ waittime + sleeptime);	2321	time_update (EV_A_ waittime + sleeptime);
2055	}	2322	}
2056		2323
…		…
2067		2334
2068	/* queue check watchers, to be executed first */	2335	/* queue check watchers, to be executed first */
2069	if (expect_false (checkcnt))	2336	if (expect_false (checkcnt))
2070	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2337	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2071		2338
2072	call_pending (EV_A);	2339	EV_INVOKE_PENDING;
2073	}	2340	}
2074	while (expect_true (	2341	while (expect_true (
2075	activecnt	2342	activecnt
2076	&& !loop_done	2343	&& !loop_done
2077	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2344	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2078	));	2345	));
2079		2346
2080	if (loop_done == EVUNLOOP_ONE)	2347	if (loop_done == EVUNLOOP_ONE)
2081	loop_done = EVUNLOOP_CANCEL;	2348	loop_done = EVUNLOOP_CANCEL;
		2349
		2350	#if EV_MINIMAL < 2
		2351	--loop_depth;
		2352	#endif
2082	}	2353	}
2083		2354
2084	void	2355	void
2085	ev_unloop (EV_P_ int how)	2356	ev_unloop (EV_P_ int how)
2086	{	2357	{
2087	loop_done = how;	2358	loop_done = how;
2088	}	2359	}
2089		2360
		2361	void
		2362	ev_ref (EV_P)
		2363	{
		2364	++activecnt;
		2365	}
		2366
		2367	void
		2368	ev_unref (EV_P)
		2369	{
		2370	--activecnt;
		2371	}
		2372
		2373	void
		2374	ev_now_update (EV_P)
		2375	{
		2376	time_update (EV_A_ 1e100);
		2377	}
		2378
		2379	void
		2380	ev_suspend (EV_P)
		2381	{
		2382	ev_now_update (EV_A);
		2383	}
		2384
		2385	void
		2386	ev_resume (EV_P)
		2387	{
		2388	ev_tstamp mn_prev = mn_now;
		2389
		2390	ev_now_update (EV_A);
		2391	timers_reschedule (EV_A_ mn_now - mn_prev);
		2392	#if EV_PERIODIC_ENABLE
		2393	/* TODO: really do this? */
		2394	periodics_reschedule (EV_A);
		2395	#endif
		2396	}
		2397
2090	/*****************************************************************************/	2398	/*****************************************************************************/
		2399	/* singly-linked list management, used when the expected list length is short */
2091		2400
2092	void inline_size	2401	inline_size void
2093	wlist_add (WL *head, WL elem)	2402	wlist_add (WL *head, WL elem)
2094	{	2403	{
2095	elem->next = *head;	2404	elem->next = *head;
2096	*head = elem;	2405	*head = elem;
2097	}	2406	}
2098		2407
2099	void inline_size	2408	inline_size void
2100	wlist_del (WL *head, WL elem)	2409	wlist_del (WL *head, WL elem)
2101	{	2410	{
2102	while (*head)	2411	while (*head)
2103	{	2412	{
2104	if (*head == elem)	2413	if (expect_true (*head == elem))
2105	{	2414	{
2106	*head = elem->next;	2415	*head = elem->next;
2107	return;	2416	break;
2108	}	2417	}
2109		2418
2110	head = &(*head)->next;	2419	head = &(*head)->next;
2111	}	2420	}
2112	}	2421	}
2113		2422
2114	void inline_speed	2423	/* internal, faster, version of ev_clear_pending */
		2424	inline_speed void
2115	clear_pending (EV_P_ W w)	2425	clear_pending (EV_P_ W w)
2116	{	2426	{
2117	if (w->pending)	2427	if (w->pending)
2118	{	2428	{
2119	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2429	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2120	w->pending = 0;	2430	w->pending = 0;
2121	}	2431	}
2122	}	2432	}
2123		2433
2124	int	2434	int
…		…
2128	int pending = w_->pending;	2438	int pending = w_->pending;
2129		2439
2130	if (expect_true (pending))	2440	if (expect_true (pending))
2131	{	2441	{
2132	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2442	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2443	p->w = (W)&pending_w;
2133	w_->pending = 0;	2444	w_->pending = 0;
2134	p->w = 0;
2135	return p->events;	2445	return p->events;
2136	}	2446	}
2137	else	2447	else
2138	return 0;	2448	return 0;
2139	}	2449	}
2140		2450
2141	void inline_size	2451	inline_size void
2142	pri_adjust (EV_P_ W w)	2452	pri_adjust (EV_P_ W w)
2143	{	2453	{
2144	int pri = w->priority;	2454	int pri = ev_priority (w);
2145	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2455	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2146	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2456	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2147	w->priority = pri;	2457	ev_set_priority (w, pri);
2148	}	2458	}
2149		2459
2150	void inline_speed	2460	inline_speed void
2151	ev_start (EV_P_ W w, int active)	2461	ev_start (EV_P_ W w, int active)
2152	{	2462	{
2153	pri_adjust (EV_A_ w);	2463	pri_adjust (EV_A_ w);
2154	w->active = active;	2464	w->active = active;
2155	ev_ref (EV_A);	2465	ev_ref (EV_A);
2156	}	2466	}
2157		2467
2158	void inline_size	2468	inline_size void
2159	ev_stop (EV_P_ W w)	2469	ev_stop (EV_P_ W w)
2160	{	2470	{
2161	ev_unref (EV_A);	2471	ev_unref (EV_A);
2162	w->active = 0;	2472	w->active = 0;
2163	}	2473	}
…		…
2179		2489
2180	ev_start (EV_A_ (W)w, 1);	2490	ev_start (EV_A_ (W)w, 1);
2181	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2491	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2182	wlist_add (&anfds[fd].head, (WL)w);	2492	wlist_add (&anfds[fd].head, (WL)w);
2183		2493
2184	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2494	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2185	w->events &= ~EV__IOFDSET;	2495	w->events &= ~EV__IOFDSET;
2186		2496
2187	EV_FREQUENT_CHECK;	2497	EV_FREQUENT_CHECK;
2188	}	2498	}
2189		2499
…		…
2283	}	2593	}
2284		2594
2285	EV_FREQUENT_CHECK;	2595	EV_FREQUENT_CHECK;
2286	}	2596	}
2287		2597
		2598	ev_tstamp
		2599	ev_timer_remaining (EV_P_ ev_timer *w)
		2600	{
		2601	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2602	}
		2603
2288	#if EV_PERIODIC_ENABLE	2604	#if EV_PERIODIC_ENABLE
2289	void noinline	2605	void noinline
2290	ev_periodic_start (EV_P_ ev_periodic *w)	2606	ev_periodic_start (EV_P_ ev_periodic *w)
2291	{	2607	{
2292	if (expect_false (ev_is_active (w)))	2608	if (expect_false (ev_is_active (w)))
…		…
2359	#endif	2675	#endif
2360		2676
2361	void noinline	2677	void noinline
2362	ev_signal_start (EV_P_ ev_signal *w)	2678	ev_signal_start (EV_P_ ev_signal *w)
2363	{	2679	{
2364	#if EV_MULTIPLICITY
2365	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2366	#endif
2367	if (expect_false (ev_is_active (w)))	2680	if (expect_false (ev_is_active (w)))
2368	return;	2681	return;
2369		2682
2370	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2683	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2371		2684
2372	evpipe_init (EV_A);	2685	#if EV_MULTIPLICITY
		2686	assert (("libev: a signal must not be attached to two different loops",
		2687	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2373		2688
2374	EV_FREQUENT_CHECK;	2689	signals [w->signum - 1].loop = EV_A;
		2690	#endif
2375		2691
		2692	EV_FREQUENT_CHECK;
		2693
		2694	#if EV_USE_SIGNALFD
		2695	if (sigfd == -2)
2376	{	2696	{
2377	#ifndef _WIN32	2697	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2378	sigset_t full, prev;	2698	if (sigfd < 0 && errno == EINVAL)
2379	sigfillset (&full);	2699	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2380	sigprocmask (SIG_SETMASK, &full, &prev);
2381	#endif
2382		2700
2383	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2701	if (sigfd >= 0)
		2702	{
		2703	fd_intern (sigfd); /* doing it twice will not hurt */
2384		2704
2385	#ifndef _WIN32	2705	sigemptyset (&sigfd_set);
2386	sigprocmask (SIG_SETMASK, &prev, 0);	2706
2387	#endif	2707	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2708	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2709	ev_io_start (EV_A_ &sigfd_w);
		2710	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2711	}
2388	}	2712	}
		2713
		2714	if (sigfd >= 0)
		2715	{
		2716	/* TODO: check .head */
		2717	sigaddset (&sigfd_set, w->signum);
		2718	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2719
		2720	signalfd (sigfd, &sigfd_set, 0);
		2721	}
		2722	#endif
2389		2723
2390	ev_start (EV_A_ (W)w, 1);	2724	ev_start (EV_A_ (W)w, 1);
2391	wlist_add (&signals [w->signum - 1].head, (WL)w);	2725	wlist_add (&signals [w->signum - 1].head, (WL)w);
2392		2726
2393	if (!((WL)w)->next)	2727	if (!((WL)w)->next)
		2728	# if EV_USE_SIGNALFD
		2729	if (sigfd < 0) /*TODO*/
		2730	# endif
2394	{	2731	{
2395	#if _WIN32	2732	# if _WIN32
2396	signal (w->signum, ev_sighandler);	2733	signal (w->signum, ev_sighandler);
2397	#else	2734	# else
2398	struct sigaction sa;	2735	struct sigaction sa;
		2736
		2737	evpipe_init (EV_A);
		2738
2399	sa.sa_handler = ev_sighandler;	2739	sa.sa_handler = ev_sighandler;
2400	sigfillset (&sa.sa_mask);	2740	sigfillset (&sa.sa_mask);
2401	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2741	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2402	sigaction (w->signum, &sa, 0);	2742	sigaction (w->signum, &sa, 0);
		2743
		2744	sigemptyset (&sa.sa_mask);
		2745	sigaddset (&sa.sa_mask, w->signum);
		2746	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2403	#endif	2747	#endif
2404	}	2748	}
2405		2749
2406	EV_FREQUENT_CHECK;	2750	EV_FREQUENT_CHECK;
2407	}	2751	}
2408		2752
2409	void noinline	2753	void noinline
…		…
2417		2761
2418	wlist_del (&signals [w->signum - 1].head, (WL)w);	2762	wlist_del (&signals [w->signum - 1].head, (WL)w);
2419	ev_stop (EV_A_ (W)w);	2763	ev_stop (EV_A_ (W)w);
2420		2764
2421	if (!signals [w->signum - 1].head)	2765	if (!signals [w->signum - 1].head)
		2766	{
		2767	#if EV_MULTIPLICITY
		2768	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2769	#endif
		2770	#if EV_USE_SIGNALFD
		2771	if (sigfd >= 0)
		2772	{
		2773	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2774	sigdelset (&sigfd_set, w->signum);
		2775	signalfd (sigfd, &sigfd_set, 0);
		2776	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2777	/*TODO: maybe unblock signal? */
		2778	}
		2779	else
		2780	#endif
2422	signal (w->signum, SIG_DFL);	2781	signal (w->signum, SIG_DFL);
		2782	}
2423		2783
2424	EV_FREQUENT_CHECK;	2784	EV_FREQUENT_CHECK;
2425	}	2785	}
2426		2786
2427	void	2787	void
…		…
2507	}	2867	}
2508	}	2868	}
2509		2869
2510	if (w->wd >= 0)	2870	if (w->wd >= 0)
2511	{	2871	{
		2872	struct statfs sfs;
		2873
2512	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2874	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2513		2875
2514	/* now local changes will be tracked by inotify, but remote changes won't */	2876	/* now local changes will be tracked by inotify, but remote changes won't */
2515	/* unless the filesystem it known to be local, we therefore still poll */	2877	/* unless the filesystem it known to be local, we therefore still poll */
2516	/* also do poll on <2.6.25, but with normal frequency */	2878	/* also do poll on <2.6.25, but with normal frequency */
2517	struct statfs sfs;
2518		2879
2519	if (fs_2625 && !statfs (w->path, &sfs))	2880	if (fs_2625 && !statfs (w->path, &sfs))
2520	if (sfs.f_type == 0x1373 /* devfs */	2881	if (sfs.f_type == 0x1373 /* devfs */
2521	|| sfs.f_type == 0xEF53 /* ext2/3 */	2882	|| sfs.f_type == 0xEF53 /* ext2/3 */
2522	|| sfs.f_type == 0x3153464a /* jfs */	2883	|| sfs.f_type == 0x3153464a /* jfs */
…		…
2588		2949
2589	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2950	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2590	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2951	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2591	}	2952	}
2592		2953
2593	void inline_size	2954	inline_size void
2594	check_2625 (EV_P)	2955	check_2625 (EV_P)
2595	{	2956	{
2596	/* kernels < 2.6.25 are borked	2957	/* kernels < 2.6.25 are borked
2597	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	2958	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2598	*/	2959	*/
…		…
2611	return;	2972	return;
2612		2973
2613	fs_2625 = 1;	2974	fs_2625 = 1;
2614	}	2975	}
2615		2976
2616	void inline_size	2977	inline_size void
2617	infy_init (EV_P)	2978	infy_init (EV_P)
2618	{	2979	{
2619	if (fs_fd != -2)	2980	if (fs_fd != -2)
2620	return;	2981	return;
2621		2982
…		…
2631	ev_set_priority (&fs_w, EV_MAXPRI);	2992	ev_set_priority (&fs_w, EV_MAXPRI);
2632	ev_io_start (EV_A_ &fs_w);	2993	ev_io_start (EV_A_ &fs_w);
2633	}	2994	}
2634	}	2995	}
2635		2996
2636	void inline_size	2997	inline_size void
2637	infy_fork (EV_P)	2998	infy_fork (EV_P)
2638	{	2999	{
2639	int slot;	3000	int slot;
2640		3001
2641	if (fs_fd < 0)	3002	if (fs_fd < 0)
…		…
2907	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3268	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2908	{	3269	{
2909	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3270	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2910		3271
2911	{	3272	{
2912	struct ev_loop *loop = w->other;	3273	EV_P = w->other;
2913		3274
2914	while (fdchangecnt)	3275	while (fdchangecnt)
2915	{	3276	{
2916	fd_reify (EV_A);	3277	fd_reify (EV_A);
2917	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3278	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2925	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3286	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2926		3287
2927	ev_embed_stop (EV_A_ w);	3288	ev_embed_stop (EV_A_ w);
2928		3289
2929	{	3290	{
2930	struct ev_loop *loop = w->other;	3291	EV_P = w->other;
2931		3292
2932	ev_loop_fork (EV_A);	3293	ev_loop_fork (EV_A);
2933	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3294	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2934	}	3295	}
2935		3296
…		…
2949	{	3310	{
2950	if (expect_false (ev_is_active (w)))	3311	if (expect_false (ev_is_active (w)))
2951	return;	3312	return;
2952		3313
2953	{	3314	{
2954	struct ev_loop *loop = w->other;	3315	EV_P = w->other;
2955	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3316	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2956	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3317	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2957	}	3318	}
2958		3319
2959	EV_FREQUENT_CHECK;	3320	EV_FREQUENT_CHECK;
…		…
3071		3432
3072	void	3433	void
3073	ev_async_send (EV_P_ ev_async *w)	3434	ev_async_send (EV_P_ ev_async *w)
3074	{	3435	{
3075	w->sent = 1;	3436	w->sent = 1;
3076	evpipe_write (EV_A_ &gotasync);	3437	evpipe_write (EV_A_ &async_pending);
3077	}	3438	}
3078	#endif	3439	#endif
3079		3440
3080	/*****************************************************************************/	3441	/*****************************************************************************/
3081		3442
…		…
3145	}	3506	}
3146	}	3507	}
3147		3508
3148	/*****************************************************************************/	3509	/*****************************************************************************/
3149		3510
3150	#if 0	3511	#if EV_WALK_ENABLE
3151	void	3512	void
3152	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3513	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3153	{	3514	{
3154	int i, j;	3515	int i, j;
3155	ev_watcher_list *wl, *wn;	3516	ev_watcher_list *wl, *wn;
…		…
3171	#if EV_USE_INOTIFY	3532	#if EV_USE_INOTIFY
3172	if (ev_cb ((ev_io *)wl) == infy_cb)	3533	if (ev_cb ((ev_io *)wl) == infy_cb)
3173	;	3534	;
3174	else	3535	else
3175	#endif	3536	#endif
3176	if ((ev_io *)wl != &pipeev)	3537	if ((ev_io *)wl != &pipe_w)
3177	if (types & EV_IO)	3538	if (types & EV_IO)
3178	cb (EV_A_ EV_IO, wl);	3539	cb (EV_A_ EV_IO, wl);
3179		3540
3180	wl = wn;	3541	wl = wn;
3181	}	3542	}
…		…
3230	if (types & EV_CHECK)	3591	if (types & EV_CHECK)
3231	for (i = checkcnt; i--; )	3592	for (i = checkcnt; i--; )
3232	cb (EV_A_ EV_CHECK, checks [i]);	3593	cb (EV_A_ EV_CHECK, checks [i]);
3233		3594
3234	if (types & EV_SIGNAL)	3595	if (types & EV_SIGNAL)
3235	for (i = 0; i < signalmax; ++i)	3596	for (i = 0; i < EV_NSIG - 1; ++i)
3236	for (wl = signals [i].head; wl; )	3597	for (wl = signals [i].head; wl; )
3237	{	3598	{
3238	wn = wl->next;	3599	wn = wl->next;
3239	cb (EV_A_ EV_SIGNAL, wl);	3600	cb (EV_A_ EV_SIGNAL, wl);
3240	wl = wn;	3601	wl = wn;

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