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Comparing libev/ev.c (file contents):
Revision 1.287 by root, Mon Apr 20 19:45:58 2009 UTC vs.
Revision 1.317 by root, Sat Nov 14 00:15:21 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__ >= 7))
		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
344	#endif	404	#endif
		405
		406	#if EV_USE_SIGNALFD
		407	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		408	# include <stdint.h>
		409	# ifndef SFD_NONBLOCK
		410	# define SFD_NONBLOCK O_NONBLOCK
		411	# endif
		412	# ifndef SFD_CLOEXEC
		413	# ifdef O_CLOEXEC
		414	# define SFD_CLOEXEC O_CLOEXEC
		415	# else
		416	# define SFD_CLOEXEC 02000000
		417	# endif
		418	# endif
		419	# ifdef __cplusplus
		420	extern "C" {
		421	# endif
		422	int signalfd (int fd, const sigset_t *mask, int flags);
		423
		424	struct signalfd_siginfo
		425	{
		426	uint32_t ssi_signo;
		427	char pad[128 - sizeof (uint32_t)];
		428	};
		429	# ifdef __cplusplus
		430	}
		431	# endif
		432	#endif
		433
345		434
346	/**/	435	/**/
347		436
348	#if EV_VERIFY >= 3	437	#if EV_VERIFY >= 3
349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
361	*/	450	*/
362	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	451	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363		452
364	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	453	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
365	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	454	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
366	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
367		455
368	#if __GNUC__ >= 4	456	#if __GNUC__ >= 4
369	# define expect(expr,value) __builtin_expect ((expr),(value))	457	# define expect(expr,value) __builtin_expect ((expr),(value))
370	# define noinline __attribute__ ((noinline))	458	# define noinline __attribute__ ((noinline))
371	#else	459	#else
…		…
384	# define inline_speed static noinline	472	# define inline_speed static noinline
385	#else	473	#else
386	# define inline_speed static inline	474	# define inline_speed static inline
387	#endif	475	#endif
388		476
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	477	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		478
		479	#if EV_MINPRI == EV_MAXPRI
		480	# define ABSPRI(w) (((W)w), 0)
		481	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	482	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		483	#endif
391		484
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	485	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	486	#define EMPTY2(a,b) /* used to suppress some warnings */
394		487
395	typedef ev_watcher *W;	488	typedef ev_watcher *W;
…		…
407		500
408	#if EV_USE_MONOTONIC	501	#if EV_USE_MONOTONIC
409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	502	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410	#endif	503	#endif
411		504
		505	#ifndef EV_FD_TO_WIN32_HANDLE
		506	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		507	#endif
		508	#ifndef EV_WIN32_HANDLE_TO_FD
		509	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
		510	#endif
		511	#ifndef EV_WIN32_CLOSE_FD
		512	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		513	#endif
		514
412	#ifdef _WIN32	515	#ifdef _WIN32
413	# include "ev_win32.c"	516	# include "ev_win32.c"
414	#endif	517	#endif
415		518
416	/*****************************************************************************/	519	/*****************************************************************************/
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		583
481	/*****************************************************************************/	584	/*****************************************************************************/
482		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
		589	/* file descriptor info structure */
483	typedef struct	590	typedef struct
484	{	591	{
485	WL head;	592	WL head;
486	unsigned char events;	593	unsigned char events; /* the events watched for */
487	unsigned char reify;	594	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 */	595	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	596	unsigned char unused;
490	#if EV_USE_EPOLL	597	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	598	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	599	#endif
493	#if EV_SELECT_IS_WINSOCKET	600	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	601	SOCKET handle;
495	#endif	602	#endif
496	} ANFD;	603	} ANFD;
497		604
		605	/* stores the pending event set for a given watcher */
498	typedef struct	606	typedef struct
499	{	607	{
500	W w;	608	W w;
501	int events;	609	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	610	} ANPENDING;
503		611
504	#if EV_USE_INOTIFY	612	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	613	/* hash table entry per inotify-id */
506	typedef struct	614	typedef struct
…		…
509	} ANFS;	617	} ANFS;
510	#endif	618	#endif
511		619
512	/* Heap Entry */	620	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	621	#if EV_HEAP_CACHE_AT
		622	/* a heap element */
514	typedef struct {	623	typedef struct {
515	ev_tstamp at;	624	ev_tstamp at;
516	WT w;	625	WT w;
517	} ANHE;	626	} ANHE;
518		627
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	628	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	629	#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 */	630	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	631	#else
		632	/* a heap element */
523	typedef WT ANHE;	633	typedef WT ANHE;
524		634
525	#define ANHE_w(he) (he)	635	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	636	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	637	#define ANHE_at_cache(he)
…		…
551		661
552	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
553		663
554	#endif	664	#endif
555		665
		666	#if EV_MINIMAL < 2
		667	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		668	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		669	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		670	#else
		671	# define EV_RELEASE_CB (void)0
		672	# define EV_ACQUIRE_CB (void)0
		673	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		674	#endif
		675
		676	#define EVUNLOOP_RECURSE 0x80
		677
556	/*****************************************************************************/	678	/*****************************************************************************/
557		679
		680	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	681	ev_tstamp
559	ev_time (void)	682	ev_time (void)
560	{	683	{
561	#if EV_USE_REALTIME	684	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	685	if (expect_true (have_realtime))
…		…
569		692
570	struct timeval tv;	693	struct timeval tv;
571	gettimeofday (&tv, 0);	694	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	695	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	696	}
		697	#endif
574		698
575	inline_size ev_tstamp	699	inline_size ev_tstamp
576	get_clock (void)	700	get_clock (void)
577	{	701	{
578	#if EV_USE_MONOTONIC	702	#if EV_USE_MONOTONIC
…		…
614		738
615	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		741
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	742	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	743	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	744	/* by older ones */
621	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
622	#endif	746	#endif
623	}	747	}
624	}	748	}
625		749
626	/*****************************************************************************/	750	/*****************************************************************************/
627		751
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	752	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		753
		754	/* find a suitable new size for the given array, */
		755	/* hopefully by rounding to a ncie-to-malloc size */
630	inline_size int	756	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	757	array_nextsize (int elem, int cur, int cnt)
632	{	758	{
633	int ncur = cur + 1;	759	int ncur = cur + 1;
634		760
…		…
680	#define array_free(stem, idx) \	806	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	807	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		808
683	/*****************************************************************************/	809	/*****************************************************************************/
684		810
		811	/* dummy callback for pending events */
		812	static void noinline
		813	pendingcb (EV_P_ ev_prepare *w, int revents)
		814	{
		815	}
		816
685	void noinline	817	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	818	ev_feed_event (EV_P_ void *w, int revents)
687	{	819	{
688	W w_ = (W)w;	820	W w_ = (W)w;
689	int pri = ABSPRI (w_);	821	int pri = ABSPRI (w_);
…		…
724	}	856	}
725		857
726	/*****************************************************************************/	858	/*****************************************************************************/
727		859
728	inline_speed void	860	inline_speed void
729	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
730	{	862	{
731	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
732	ev_io *w;	864	ev_io *w;
733		865
734	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	866	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
738	if (ev)	870	if (ev)
739	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
740	}	872	}
741	}	873	}
742		874
		875	/* do not submit kernel events for fds that have reify set */
		876	/* because that means they changed while we were polling for new events */
		877	inline_speed void
		878	fd_event (EV_P_ int fd, int revents)
		879	{
		880	ANFD *anfd = anfds + fd;
		881
		882	if (expect_true (!anfd->reify))
		883	fd_event_nc (EV_A_ fd, revents);
		884	}
		885
743	void	886	void
744	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
745	{	888	{
746	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
747	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
748	}	891	}
749		892
		893	/* make sure the external fd watch events are in-sync */
		894	/* with the kernel/libev internal state */
750	inline_size void	895	inline_size void
751	fd_reify (EV_P)	896	fd_reify (EV_P)
752	{	897	{
753	int i;	898	int i;
754		899
…		…
765		910
766	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
767	if (events)	912	if (events)
768	{	913	{
769	unsigned long arg;	914	unsigned long arg;
770	#ifdef EV_FD_TO_WIN32_HANDLE
771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
772	#else
773	anfd->handle = _get_osfhandle (fd);
774	#endif
775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	916	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
776	}	917	}
777	#endif	918	#endif
778		919
779	{	920	{
…		…
789	}	930	}
790		931
791	fdchangecnt = 0;	932	fdchangecnt = 0;
792	}	933	}
793		934
		935	/* something about the given fd changed */
794	inline_size void	936	inline_size void
795	fd_change (EV_P_ int fd, int flags)	937	fd_change (EV_P_ int fd, int flags)
796	{	938	{
797	unsigned char reify = anfds [fd].reify;	939	unsigned char reify = anfds [fd].reify;
798	anfds [fd].reify |= flags;	940	anfds [fd].reify |= flags;
…		…
803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	945	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804	fdchanges [fdchangecnt - 1] = fd;	946	fdchanges [fdchangecnt - 1] = fd;
805	}	947	}
806	}	948	}
807		949
		950	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808	inline_speed void	951	inline_speed void
809	fd_kill (EV_P_ int fd)	952	fd_kill (EV_P_ int fd)
810	{	953	{
811	ev_io *w;	954	ev_io *w;
812		955
…		…
815	ev_io_stop (EV_A_ w);	958	ev_io_stop (EV_A_ w);
816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	959	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817	}	960	}
818	}	961	}
819		962
		963	/* check whether the given fd is atcually valid, for error recovery */
820	inline_size int	964	inline_size int
821	fd_valid (int fd)	965	fd_valid (int fd)
822	{	966	{
823	#ifdef _WIN32	967	#ifdef _WIN32
824	return _get_osfhandle (fd) != -1;	968	return _get_osfhandle (fd) != -1;
…		…
847		991
848	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
849	if (anfds [fd].events)	993	if (anfds [fd].events)
850	{	994	{
851	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
852	return;	996	break;
853	}	997	}
854	}	998	}
855		999
856	/* usually called after fork if backend needs to re-arm all fds from scratch */	1000	/* usually called after fork if backend needs to re-arm all fds from scratch */
857	static void noinline	1001	static void noinline
…		…
862	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
863	if (anfds [fd].events)	1007	if (anfds [fd].events)
864	{	1008	{
865	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
866	anfds [fd].emask = 0;	1010	anfds [fd].emask = 0;
867	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868	}	1012	}
869	}	1013	}
870		1014
871	/*****************************************************************************/	1015	/*****************************************************************************/
872		1016
…		…
947		1091
948	for (;;)	1092	for (;;)
949	{	1093	{
950	int c = k << 1;	1094	int c = k << 1;
951		1095
952	if (c > N + HEAP0 - 1)	1096	if (c >= N + HEAP0)
953	break;	1097	break;
954		1098
955	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956	? 1 : 0;	1100	? 1 : 0;
957		1101
…		…
989		1133
990	heap [k] = he;	1134	heap [k] = he;
991	ev_active (ANHE_w (he)) = k;	1135	ev_active (ANHE_w (he)) = k;
992	}	1136	}
993		1137
		1138	/* move an element suitably so it is in a correct place */
994	inline_size void	1139	inline_size void
995	adjustheap (ANHE *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
996	{	1141	{
997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998	upheap (heap, k);	1143	upheap (heap, k);
999	else	1144	else
1000	downheap (heap, N, k);	1145	downheap (heap, N, k);
1001	}	1146	}
1002		1147
…		…
1012	upheap (heap, i + HEAP0);	1157	upheap (heap, i + HEAP0);
1013	}	1158	}
1014		1159
1015	/*****************************************************************************/	1160	/*****************************************************************************/
1016		1161
		1162	/* associate signal watchers to a signal signal */
1017	typedef struct	1163	typedef struct
1018	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
1019	WL head;	1169	WL head;
1020	EV_ATOMIC_T gotsig;
1021	} ANSIG;	1170	} ANSIG;
1022		1171
1023	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
1024	static int signalmax;
1025
1026	static EV_ATOMIC_T gotsig;
1027		1173
1028	/*****************************************************************************/	1174	/*****************************************************************************/
1029		1175
		1176	/* used to prepare libev internal fd's */
		1177	/* this is not fork-safe */
1030	inline_speed void	1178	inline_speed void
1031	fd_intern (int fd)	1179	fd_intern (int fd)
1032	{	1180	{
1033	#ifdef _WIN32	1181	#ifdef _WIN32
1034	unsigned long arg = 1;	1182	unsigned long arg = 1;
…		…
1040	}	1188	}
1041		1189
1042	static void noinline	1190	static void noinline
1043	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
1044	{	1192	{
1045	if (!ev_is_active (&pipeev))	1193	if (!ev_is_active (&pipe_w))
1046	{	1194	{
1047	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
1048	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
1049	{	1201	{
1050	evpipe [0] = -1;	1202	evpipe [0] = -1;
1051	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
1052	ev_io_set (&pipeev, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
1053	}	1205	}
1054	else	1206	else
1055	#endif	1207	#endif
1056	{	1208	{
1057	while (pipe (evpipe))	1209	while (pipe (evpipe))
1058	ev_syserr ("(libev) error creating signal/async pipe");	1210	ev_syserr ("(libev) error creating signal/async pipe");
1059		1211
1060	fd_intern (evpipe [0]);	1212	fd_intern (evpipe [0]);
1061	fd_intern (evpipe [1]);	1213	fd_intern (evpipe [1]);
1062	ev_io_set (&pipeev, evpipe [0], EV_READ);	1214	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063	}	1215	}
1064		1216
1065	ev_io_start (EV_A_ &pipeev);	1217	ev_io_start (EV_A_ &pipe_w);
1066	ev_unref (EV_A); /* watcher should not keep loop alive */	1218	ev_unref (EV_A); /* watcher should not keep loop alive */
1067	}	1219	}
1068	}	1220	}
1069		1221
1070	inline_size void	1222	inline_size void
…		…
1088		1240
1089	errno = old_errno;	1241	errno = old_errno;
1090	}	1242	}
1091	}	1243	}
1092		1244
		1245	/* called whenever the libev signal pipe */
		1246	/* got some events (signal, async) */
1093	static void	1247	static void
1094	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
1095	{	1249	{
		1250	int i;
		1251
1096	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
1097	if (evfd >= 0)	1253	if (evfd >= 0)
1098	{	1254	{
1099	uint64_t counter;	1255	uint64_t counter;
1100	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
…		…
1104	{	1260	{
1105	char dummy;	1261	char dummy;
1106	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
1107	}	1263	}
1108		1264
1109	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
1110	{	1266	{
1111	int signum;	1267	sig_pending = 0;
1112	gotsig = 0;
1113		1268
1114	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
1115	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
1116	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
1117	}	1272	}
1118		1273
1119	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
1120	if (gotasync)	1275	if (async_pending)
1121	{	1276	{
1122	int i;	1277	async_pending = 0;
1123	gotasync = 0;
1124		1278
1125	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
1126	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
1127	{	1281	{
1128	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
1136		1290
1137	static void	1291	static void
1138	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
1139	{	1293	{
1140	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
1141	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
1142	#endif	1296	#endif
1143		1297
1144	#if _WIN32	1298	#if _WIN32
1145	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
1146	#endif	1300	#endif
1147		1301
1148	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
1149	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
1150	}	1304	}
1151		1305
1152	void noinline	1306	void noinline
1153	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
1154	{	1308	{
1155	WL w;	1309	WL w;
1156		1310
		1311	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
1157	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1317	/* it is permissible to try to feed a signal to the wrong loop */
1159	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
1160		1319
1161	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
1162
1163	if (signum < 0 || signum >= signalmax)
1164	return;	1321	return;
		1322	#endif
1165		1323
1166	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
1167		1325
1168	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170	}	1328	}
1171		1329
		1330	#if EV_USE_SIGNALFD
		1331	static void
		1332	sigfdcb (EV_P_ ev_io *iow, int revents)
		1333	{
		1334	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1335
		1336	for (;;)
		1337	{
		1338	ssize_t res = read (sigfd, si, sizeof (si));
		1339
		1340	/* not ISO-C, as res might be -1, but works with SuS */
		1341	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1342	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1343
		1344	if (res < (ssize_t)sizeof (si))
		1345	break;
		1346	}
		1347	}
		1348	#endif
		1349
1172	/*****************************************************************************/	1350	/*****************************************************************************/
1173		1351
1174	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
1175		1353
1176	#ifndef _WIN32	1354	#ifndef _WIN32
…		…
1179		1357
1180	#ifndef WIFCONTINUED	1358	#ifndef WIFCONTINUED
1181	# define WIFCONTINUED(status) 0	1359	# define WIFCONTINUED(status) 0
1182	#endif	1360	#endif
1183		1361
		1362	/* handle a single child status event */
1184	inline_speed void	1363	inline_speed void
1185	child_reap (EV_P_ int chain, int pid, int status)	1364	child_reap (EV_P_ int chain, int pid, int status)
1186	{	1365	{
1187	ev_child *w;	1366	ev_child *w;
1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1367	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
…		…
1202		1381
1203	#ifndef WCONTINUED	1382	#ifndef WCONTINUED
1204	# define WCONTINUED 0	1383	# define WCONTINUED 0
1205	#endif	1384	#endif
1206		1385
		1386	/* called on sigchld etc., calls waitpid */
1207	static void	1387	static void
1208	childcb (EV_P_ ev_signal *sw, int revents)	1388	childcb (EV_P_ ev_signal *sw, int revents)
1209	{	1389	{
1210	int pid, status;	1390	int pid, status;
1211		1391
…		…
1318	ev_backend (EV_P)	1498	ev_backend (EV_P)
1319	{	1499	{
1320	return backend;	1500	return backend;
1321	}	1501	}
1322		1502
		1503	#if EV_MINIMAL < 2
1323	unsigned int	1504	unsigned int
1324	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1325	{	1506	{
1326	return loop_count;	1507	return loop_count;
1327	}	1508	}
1328		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1329	void	1516	void
1330	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331	{	1518	{
1332	io_blocktime = interval;	1519	io_blocktime = interval;
1333	}	1520	}
…		…
1336	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337	{	1524	{
1338	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1339	}	1526	}
1340		1527
		1528	void
		1529	ev_set_userdata (EV_P_ void *data)
		1530	{
		1531	userdata = data;
		1532	}
		1533
		1534	void *
		1535	ev_userdata (EV_P)
		1536	{
		1537	return userdata;
		1538	}
		1539
		1540	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1541	{
		1542	invoke_cb = invoke_pending_cb;
		1543	}
		1544
		1545	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1546	{
		1547	release_cb = release;
		1548	acquire_cb = acquire;
		1549	}
		1550	#endif
		1551
		1552	/* initialise a loop structure, must be zero-initialised */
1341	static void noinline	1553	static void noinline
1342	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1343	{	1555	{
1344	if (!backend)	1556	if (!backend)
1345	{	1557	{
…		…
1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362	have_monotonic = 1;	1574	have_monotonic = 1;
1363	}	1575	}
1364	#endif	1576	#endif
1365		1577
		1578	/* pid check not overridable via env */
		1579	#ifndef _WIN32
		1580	if (flags & EVFLAG_FORKCHECK)
		1581	curpid = getpid ();
		1582	#endif
		1583
		1584	if (!(flags & EVFLAG_NOENV)
		1585	&& !enable_secure ()
		1586	&& getenv ("LIBEV_FLAGS"))
		1587	flags = atoi (getenv ("LIBEV_FLAGS"));
		1588
1366	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1367	mn_now = get_clock ();	1590	mn_now = get_clock ();
1368	now_floor = mn_now;	1591	now_floor = mn_now;
1369	rtmn_diff = ev_rt_now - mn_now;	1592	rtmn_diff = ev_rt_now - mn_now;
		1593	#if EV_MINIMAL < 2
		1594	invoke_cb = ev_invoke_pending;
		1595	#endif
1370		1596
1371	io_blocktime = 0.;	1597	io_blocktime = 0.;
1372	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1373	backend = 0;	1599	backend = 0;
1374	backend_fd = -1;	1600	backend_fd = -1;
1375	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1376	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1377	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378	#endif	1607	#endif
1379		1608	#if EV_USE_SIGNALFD
1380	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1381	#ifndef _WIN32
1382	if (flags & EVFLAG_FORKCHECK)
1383	curpid = getpid ();
1384	#endif	1610	#endif
1385
1386	if (!(flags & EVFLAG_NOENV)
1387	&& !enable_secure ()
1388	&& getenv ("LIBEV_FLAGS"))
1389	flags = atoi (getenv ("LIBEV_FLAGS"));
1390		1611
1391	if (!(flags & 0x0000ffffU))	1612	if (!(flags & 0x0000ffffU))
1392	flags |= ev_recommended_backends ();	1613	flags |= ev_recommended_backends ();
1393		1614
1394	#if EV_USE_PORT	1615	#if EV_USE_PORT
…		…
1405	#endif	1626	#endif
1406	#if EV_USE_SELECT	1627	#if EV_USE_SELECT
1407	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1628	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408	#endif	1629	#endif
1409		1630
		1631	ev_prepare_init (&pending_w, pendingcb);
		1632
1410	ev_init (&pipeev, pipecb);	1633	ev_init (&pipe_w, pipecb);
1411	ev_set_priority (&pipeev, EV_MAXPRI);	1634	ev_set_priority (&pipe_w, EV_MAXPRI);
1412	}	1635	}
1413	}	1636	}
1414		1637
		1638	/* free up a loop structure */
1415	static void noinline	1639	static void noinline
1416	loop_destroy (EV_P)	1640	loop_destroy (EV_P)
1417	{	1641	{
1418	int i;	1642	int i;
1419		1643
1420	if (ev_is_active (&pipeev))	1644	if (ev_is_active (&pipe_w))
1421	{	1645	{
1422	ev_ref (EV_A); /* signal watcher */	1646	/*ev_ref (EV_A);*/
1423	ev_io_stop (EV_A_ &pipeev);	1647	/*ev_io_stop (EV_A_ &pipe_w);*/
1424		1648
1425	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1426	if (evfd >= 0)	1650	if (evfd >= 0)
1427	close (evfd);	1651	close (evfd);
1428	#endif	1652	#endif
1429		1653
1430	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1431	{	1655	{
1432	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1433	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1434	}	1658	}
1435	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	close (sigfd);
		1664	#endif
1436		1665
1437	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1438	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1439	close (fs_fd);	1668	close (fs_fd);
1440	#endif	1669	#endif
…		…
1464	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1465	array_free (idle, [i]);	1694	array_free (idle, [i]);
1466	#endif	1695	#endif
1467	}	1696	}
1468		1697
1469	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1470		1699
1471	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
1472	array_free (rfeed, EMPTY);	1701	array_free (rfeed, EMPTY);
1473	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1474	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
…		…
1505	#endif	1734	#endif
1506	#if EV_USE_INOTIFY	1735	#if EV_USE_INOTIFY
1507	infy_fork (EV_A);	1736	infy_fork (EV_A);
1508	#endif	1737	#endif
1509		1738
1510	if (ev_is_active (&pipeev))	1739	if (ev_is_active (&pipe_w))
1511	{	1740	{
1512	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1513	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1514	gotsig = 1;	1743	sig_pending = 1;
1515	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1516	gotasync = 1;	1745	async_pending = 1;
1517	#endif	1746	#endif
1518		1747
1519	ev_ref (EV_A);	1748	ev_ref (EV_A);
1520	ev_io_stop (EV_A_ &pipeev);	1749	ev_io_stop (EV_A_ &pipe_w);
1521		1750
1522	#if EV_USE_EVENTFD	1751	#if EV_USE_EVENTFD
1523	if (evfd >= 0)	1752	if (evfd >= 0)
1524	close (evfd);	1753	close (evfd);
1525	#endif	1754	#endif
1526		1755
1527	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1528	{	1757	{
1529	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1530	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1531	}	1760	}
1532		1761
1533	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1534	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1535	pipecb (EV_A_ &pipeev, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
1536	}	1765	}
1537		1766
1538	postfork = 0;	1767	postfork = 0;
1539	}	1768	}
1540		1769
1541	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
1542		1771
1543	struct ev_loop *	1772	struct ev_loop *
1544	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1545	{	1774	{
1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547		1776
1548	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1551		1779
1552	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1553	return loop;	1781	return EV_A;
1554		1782
1555	return 0;	1783	return 0;
1556	}	1784	}
1557		1785
1558	void	1786	void
…		…
1565	void	1793	void
1566	ev_loop_fork (EV_P)	1794	ev_loop_fork (EV_P)
1567	{	1795	{
1568	postfork = 1; /* must be in line with ev_default_fork */	1796	postfork = 1; /* must be in line with ev_default_fork */
1569	}	1797	}
		1798	#endif /* multiplicity */
1570		1799
1571	#if EV_VERIFY	1800	#if EV_VERIFY
1572	static void noinline	1801	static void noinline
1573	verify_watcher (EV_P_ W w)	1802	verify_watcher (EV_P_ W w)
1574	{	1803	{
…		…
1602	verify_watcher (EV_A_ ws [cnt]);	1831	verify_watcher (EV_A_ ws [cnt]);
1603	}	1832	}
1604	}	1833	}
1605	#endif	1834	#endif
1606		1835
		1836	#if EV_MINIMAL < 2
1607	void	1837	void
1608	ev_loop_verify (EV_P)	1838	ev_loop_verify (EV_P)
1609	{	1839	{
1610	#if EV_VERIFY	1840	#if EV_VERIFY
1611	int i;	1841	int i;
…		…
1660	assert (checkmax >= checkcnt);	1890	assert (checkmax >= checkcnt);
1661	array_verify (EV_A_ (W *)checks, checkcnt);	1891	array_verify (EV_A_ (W *)checks, checkcnt);
1662		1892
1663	# if 0	1893	# if 0
1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1894	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
1665	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1666	# endif
1667	#endif	1896	# endif
		1897	#endif
1668	}	1898	}
1669		1899	#endif
1670	#endif /* multiplicity */
1671		1900
1672	#if EV_MULTIPLICITY	1901	#if EV_MULTIPLICITY
1673	struct ev_loop *	1902	struct ev_loop *
1674	ev_default_loop_init (unsigned int flags)	1903	ev_default_loop_init (unsigned int flags)
1675	#else	1904	#else
…		…
1678	#endif	1907	#endif
1679	{	1908	{
1680	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1681	{	1910	{
1682	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1684	#else	1913	#else
1685	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1686	#endif	1915	#endif
1687		1916
1688	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1705		1934
1706	void	1935	void
1707	ev_default_destroy (void)	1936	ev_default_destroy (void)
1708	{	1937	{
1709	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1710	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1711	#endif	1940	#endif
1712		1941
1713	ev_default_loop_ptr = 0;	1942	ev_default_loop_ptr = 0;
1714		1943
1715	#ifndef _WIN32	1944	#ifndef _WIN32
…		…
1722		1951
1723	void	1952	void
1724	ev_default_fork (void)	1953	ev_default_fork (void)
1725	{	1954	{
1726	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1727	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1728	#endif	1957	#endif
1729		1958
1730	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1731	}	1960	}
1732		1961
…		…
1736	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1737	{	1966	{
1738	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
1739	}	1968	}
1740		1969
1741	inline_speed void	1970	unsigned int
1742	call_pending (EV_P)	1971	ev_pending_count (EV_P)
		1972	{
		1973	int pri;
		1974	unsigned int count = 0;
		1975
		1976	for (pri = NUMPRI; pri--; )
		1977	count += pendingcnt [pri];
		1978
		1979	return count;
		1980	}
		1981
		1982	void noinline
		1983	ev_invoke_pending (EV_P)
1743	{	1984	{
1744	int pri;	1985	int pri;
1745		1986
1746	for (pri = NUMPRI; pri--; )	1987	for (pri = NUMPRI; pri--; )
1747	while (pendingcnt [pri])	1988	while (pendingcnt [pri])
1748	{	1989	{
1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1990	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750		1991
1751	if (expect_true (p->w))
1752	{
1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	1992	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1993	/* ^ this is no longer true, as pending_w could be here */
1754		1994
1755	p->w->pending = 0;	1995	p->w->pending = 0;
1756	EV_CB_INVOKE (p->w, p->events);	1996	EV_CB_INVOKE (p->w, p->events);
1757	EV_FREQUENT_CHECK;	1997	EV_FREQUENT_CHECK;
1758	}
1759	}	1998	}
1760	}	1999	}
1761		2000
1762	#if EV_IDLE_ENABLE	2001	#if EV_IDLE_ENABLE
		2002	/* make idle watchers pending. this handles the "call-idle */
		2003	/* only when higher priorities are idle" logic */
1763	inline_size void	2004	inline_size void
1764	idle_reify (EV_P)	2005	idle_reify (EV_P)
1765	{	2006	{
1766	if (expect_false (idleall))	2007	if (expect_false (idleall))
1767	{	2008	{
…		…
1780	}	2021	}
1781	}	2022	}
1782	}	2023	}
1783	#endif	2024	#endif
1784		2025
		2026	/* make timers pending */
1785	inline_size void	2027	inline_size void
1786	timers_reify (EV_P)	2028	timers_reify (EV_P)
1787	{	2029	{
1788	EV_FREQUENT_CHECK;	2030	EV_FREQUENT_CHECK;
1789		2031
…		…
1818	feed_reverse_done (EV_A_ EV_TIMEOUT);	2060	feed_reverse_done (EV_A_ EV_TIMEOUT);
1819	}	2061	}
1820	}	2062	}
1821		2063
1822	#if EV_PERIODIC_ENABLE	2064	#if EV_PERIODIC_ENABLE
		2065	/* make periodics pending */
1823	inline_size void	2066	inline_size void
1824	periodics_reify (EV_P)	2067	periodics_reify (EV_P)
1825	{	2068	{
1826	EV_FREQUENT_CHECK;	2069	EV_FREQUENT_CHECK;
1827		2070
…		…
1874		2117
1875	feed_reverse_done (EV_A_ EV_PERIODIC);	2118	feed_reverse_done (EV_A_ EV_PERIODIC);
1876	}	2119	}
1877	}	2120	}
1878		2121
		2122	/* simply recalculate all periodics */
		2123	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1879	static void noinline	2124	static void noinline
1880	periodics_reschedule (EV_P)	2125	periodics_reschedule (EV_P)
1881	{	2126	{
1882	int i;	2127	int i;
1883		2128
…		…
1896		2141
1897	reheap (periodics, periodiccnt);	2142	reheap (periodics, periodiccnt);
1898	}	2143	}
1899	#endif	2144	#endif
1900		2145
		2146	/* adjust all timers by a given offset */
1901	static void noinline	2147	static void noinline
1902	timers_reschedule (EV_P_ ev_tstamp adjust)	2148	timers_reschedule (EV_P_ ev_tstamp adjust)
1903	{	2149	{
1904	int i;	2150	int i;
1905		2151
…		…
1909	ANHE_w (*he)->at += adjust;	2155	ANHE_w (*he)->at += adjust;
1910	ANHE_at_cache (*he);	2156	ANHE_at_cache (*he);
1911	}	2157	}
1912	}	2158	}
1913		2159
		2160	/* fetch new monotonic and realtime times from the kernel */
		2161	/* also detetc if there was a timejump, and act accordingly */
1914	inline_speed void	2162	inline_speed void
1915	time_update (EV_P_ ev_tstamp max_block)	2163	time_update (EV_P_ ev_tstamp max_block)
1916	{	2164	{
1917	int i;
1918
1919	#if EV_USE_MONOTONIC	2165	#if EV_USE_MONOTONIC
1920	if (expect_true (have_monotonic))	2166	if (expect_true (have_monotonic))
1921	{	2167	{
		2168	int i;
1922	ev_tstamp odiff = rtmn_diff;	2169	ev_tstamp odiff = rtmn_diff;
1923		2170
1924	mn_now = get_clock ();	2171	mn_now = get_clock ();
1925		2172
1926	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2173	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1976		2223
1977	mn_now = ev_rt_now;	2224	mn_now = ev_rt_now;
1978	}	2225	}
1979	}	2226	}
1980		2227
1981	static int loop_done;
1982
1983	void	2228	void
1984	ev_loop (EV_P_ int flags)	2229	ev_loop (EV_P_ int flags)
1985	{	2230	{
		2231	#if EV_MINIMAL < 2
		2232	++loop_depth;
		2233	#endif
		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2236
1986	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
1987		2238
1988	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2239	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989		2240
1990	do	2241	do
1991	{	2242	{
1992	#if EV_VERIFY >= 2	2243	#if EV_VERIFY >= 2
1993	ev_loop_verify (EV_A);	2244	ev_loop_verify (EV_A);
…		…
2006	/* we might have forked, so queue fork handlers */	2257	/* we might have forked, so queue fork handlers */
2007	if (expect_false (postfork))	2258	if (expect_false (postfork))
2008	if (forkcnt)	2259	if (forkcnt)
2009	{	2260	{
2010	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2261	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011	call_pending (EV_A);	2262	EV_INVOKE_PENDING;
2012	}	2263	}
2013	#endif	2264	#endif
2014		2265
2015	/* queue prepare watchers (and execute them) */	2266	/* queue prepare watchers (and execute them) */
2016	if (expect_false (preparecnt))	2267	if (expect_false (preparecnt))
2017	{	2268	{
2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
2020	}	2271	}
		2272
		2273	if (expect_false (loop_done))
		2274	break;
2021		2275
2022	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
2023	if (expect_false (postfork))	2277	if (expect_false (postfork))
2024	loop_fork (EV_A);	2278	loop_fork (EV_A);
2025		2279
…		…
2031	ev_tstamp waittime = 0.;	2285	ev_tstamp waittime = 0.;
2032	ev_tstamp sleeptime = 0.;	2286	ev_tstamp sleeptime = 0.;
2033		2287
2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2288	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2035	{	2289	{
		2290	/* remember old timestamp for io_blocktime calculation */
		2291	ev_tstamp prev_mn_now = mn_now;
		2292
2036	/* update time to cancel out callback processing overhead */	2293	/* update time to cancel out callback processing overhead */
2037	time_update (EV_A_ 1e100);	2294	time_update (EV_A_ 1e100);
2038		2295
2039	waittime = MAX_BLOCKTIME;	2296	waittime = MAX_BLOCKTIME;
2040		2297
…		…
2050	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2051	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
2052	}	2309	}
2053	#endif	2310	#endif
2054		2311
		2312	/* don't let timeouts decrease the waittime below timeout_blocktime */
2055	if (expect_false (waittime < timeout_blocktime))	2313	if (expect_false (waittime < timeout_blocktime))
2056	waittime = timeout_blocktime;	2314	waittime = timeout_blocktime;
2057		2315
2058	sleeptime = waittime - backend_fudge;	2316	/* extra check because io_blocktime is commonly 0 */
2059
2060	if (expect_true (sleeptime > io_blocktime))	2317	if (expect_false (io_blocktime))
2061	sleeptime = io_blocktime;
2062
2063	if (sleeptime)
2064	{	2318	{
		2319	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2320
		2321	if (sleeptime > waittime - backend_fudge)
		2322	sleeptime = waittime - backend_fudge;
		2323
		2324	if (expect_true (sleeptime > 0.))
		2325	{
2065	ev_sleep (sleeptime);	2326	ev_sleep (sleeptime);
2066	waittime -= sleeptime;	2327	waittime -= sleeptime;
		2328	}
2067	}	2329	}
2068	}	2330	}
2069		2331
		2332	#if EV_MINIMAL < 2
2070	++loop_count;	2333	++loop_count;
		2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2071	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2072		2338
2073	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
2074	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
2075	}	2341	}
2076		2342
…		…
2087		2353
2088	/* queue check watchers, to be executed first */	2354	/* queue check watchers, to be executed first */
2089	if (expect_false (checkcnt))	2355	if (expect_false (checkcnt))
2090	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2356	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2091		2357
2092	call_pending (EV_A);	2358	EV_INVOKE_PENDING;
2093	}	2359	}
2094	while (expect_true (	2360	while (expect_true (
2095	activecnt	2361	activecnt
2096	&& !loop_done	2362	&& !loop_done
2097	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2363	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2098	));	2364	));
2099		2365
2100	if (loop_done == EVUNLOOP_ONE)	2366	if (loop_done == EVUNLOOP_ONE)
2101	loop_done = EVUNLOOP_CANCEL;	2367	loop_done = EVUNLOOP_CANCEL;
		2368
		2369	#if EV_MINIMAL < 2
		2370	--loop_depth;
		2371	#endif
2102	}	2372	}
2103		2373
2104	void	2374	void
2105	ev_unloop (EV_P_ int how)	2375	ev_unloop (EV_P_ int how)
2106	{	2376	{
…		…
2137	ev_tstamp mn_prev = mn_now;	2407	ev_tstamp mn_prev = mn_now;
2138		2408
2139	ev_now_update (EV_A);	2409	ev_now_update (EV_A);
2140	timers_reschedule (EV_A_ mn_now - mn_prev);	2410	timers_reschedule (EV_A_ mn_now - mn_prev);
2141	#if EV_PERIODIC_ENABLE	2411	#if EV_PERIODIC_ENABLE
		2412	/* TODO: really do this? */
2142	periodics_reschedule (EV_A);	2413	periodics_reschedule (EV_A);
2143	#endif	2414	#endif
2144	}	2415	}
2145		2416
2146	/*****************************************************************************/	2417	/*****************************************************************************/
		2418	/* singly-linked list management, used when the expected list length is short */
2147		2419
2148	inline_size void	2420	inline_size void
2149	wlist_add (WL *head, WL elem)	2421	wlist_add (WL *head, WL elem)
2150	{	2422	{
2151	elem->next = *head;	2423	elem->next = *head;
…		…
2155	inline_size void	2427	inline_size void
2156	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
2157	{	2429	{
2158	while (*head)	2430	while (*head)
2159	{	2431	{
2160	if (*head == elem)	2432	if (expect_true (*head == elem))
2161	{	2433	{
2162	*head = elem->next;	2434	*head = elem->next;
2163	return;	2435	break;
2164	}	2436	}
2165		2437
2166	head = &(*head)->next;	2438	head = &(*head)->next;
2167	}	2439	}
2168	}	2440	}
2169		2441
		2442	/* internal, faster, version of ev_clear_pending */
2170	inline_speed void	2443	inline_speed void
2171	clear_pending (EV_P_ W w)	2444	clear_pending (EV_P_ W w)
2172	{	2445	{
2173	if (w->pending)	2446	if (w->pending)
2174	{	2447	{
2175	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2448	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2176	w->pending = 0;	2449	w->pending = 0;
2177	}	2450	}
2178	}	2451	}
2179		2452
2180	int	2453	int
…		…
2184	int pending = w_->pending;	2457	int pending = w_->pending;
2185		2458
2186	if (expect_true (pending))	2459	if (expect_true (pending))
2187	{	2460	{
2188	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2461	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2462	p->w = (W)&pending_w;
2189	w_->pending = 0;	2463	w_->pending = 0;
2190	p->w = 0;
2191	return p->events;	2464	return p->events;
2192	}	2465	}
2193	else	2466	else
2194	return 0;	2467	return 0;
2195	}	2468	}
2196		2469
2197	inline_size void	2470	inline_size void
2198	pri_adjust (EV_P_ W w)	2471	pri_adjust (EV_P_ W w)
2199	{	2472	{
2200	int pri = w->priority;	2473	int pri = ev_priority (w);
2201	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2474	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2202	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2475	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2203	w->priority = pri;	2476	ev_set_priority (w, pri);
2204	}	2477	}
2205		2478
2206	inline_speed void	2479	inline_speed void
2207	ev_start (EV_P_ W w, int active)	2480	ev_start (EV_P_ W w, int active)
2208	{	2481	{
…		…
2235		2508
2236	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
2237	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2238	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
2239		2512
2240	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2241	w->events &= ~EV__IOFDSET;	2514	w->events &= ~EV__IOFDSET;
2242		2515
2243	EV_FREQUENT_CHECK;	2516	EV_FREQUENT_CHECK;
2244	}	2517	}
2245		2518
…		…
2339	}	2612	}
2340		2613
2341	EV_FREQUENT_CHECK;	2614	EV_FREQUENT_CHECK;
2342	}	2615	}
2343		2616
		2617	ev_tstamp
		2618	ev_timer_remaining (EV_P_ ev_timer *w)
		2619	{
		2620	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2621	}
		2622
2344	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
2345	void noinline	2624	void noinline
2346	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
2347	{	2626	{
2348	if (expect_false (ev_is_active (w)))	2627	if (expect_false (ev_is_active (w)))
…		…
2415	#endif	2694	#endif
2416		2695
2417	void noinline	2696	void noinline
2418	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
2419	{	2698	{
2420	#if EV_MULTIPLICITY
2421	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2422	#endif
2423	if (expect_false (ev_is_active (w)))	2699	if (expect_false (ev_is_active (w)))
2424	return;	2700	return;
2425		2701
2426	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2702	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2427		2703
2428	evpipe_init (EV_A);	2704	#if EV_MULTIPLICITY
		2705	assert (("libev: a signal must not be attached to two different loops",
		2706	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2429		2707
2430	EV_FREQUENT_CHECK;	2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
2431		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
2432	{	2715	{
2433	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2434	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
2435	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2436	sigprocmask (SIG_SETMASK, &full, &prev);
2437	#endif
2438		2719
2439	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2720	if (sigfd >= 0)
		2721	{
		2722	fd_intern (sigfd); /* doing it twice will not hurt */
2440		2723
2441	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2442	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2443	#endif	2726	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2727	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2728	ev_io_start (EV_A_ &sigfd_w);
		2729	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2730	}
2444	}	2731	}
		2732
		2733	if (sigfd >= 0)
		2734	{
		2735	/* TODO: check .head */
		2736	sigaddset (&sigfd_set, w->signum);
		2737	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2738
		2739	signalfd (sigfd, &sigfd_set, 0);
		2740	}
		2741	#endif
2445		2742
2446	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2447	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2448		2745
2449	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /*TODO*/
		2749	# endif
2450	{	2750	{
2451	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2452	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2453	#else	2755	# else
2454	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2455	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2456	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2457	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2458	sigaction (w->signum, &sa, 0);	2763	sigaction (w->signum, &sa, 0);
		2764
		2765	sigemptyset (&sa.sa_mask);
		2766	sigaddset (&sa.sa_mask, w->signum);
		2767	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2459	#endif	2768	#endif
2460	}	2769	}
2461		2770
2462	EV_FREQUENT_CHECK;	2771	EV_FREQUENT_CHECK;
2463	}	2772	}
2464		2773
2465	void noinline	2774	void noinline
…		…
2473		2782
2474	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2475	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2476		2785
2477	if (!signals [w->signum - 1].head)	2786	if (!signals [w->signum - 1].head)
		2787	{
		2788	#if EV_MULTIPLICITY
		2789	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2790	#endif
		2791	#if EV_USE_SIGNALFD
		2792	if (sigfd >= 0)
		2793	{
		2794	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2795	sigdelset (&sigfd_set, w->signum);
		2796	signalfd (sigfd, &sigfd_set, 0);
		2797	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2798	/*TODO: maybe unblock signal? */
		2799	}
		2800	else
		2801	#endif
2478	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
2479		2804
2480	EV_FREQUENT_CHECK;	2805	EV_FREQUENT_CHECK;
2481	}	2806	}
2482		2807
2483	void	2808	void
…		…
2563	}	2888	}
2564	}	2889	}
2565		2890
2566	if (w->wd >= 0)	2891	if (w->wd >= 0)
2567	{	2892	{
		2893	struct statfs sfs;
		2894
2568	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2895	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2569		2896
2570	/* now local changes will be tracked by inotify, but remote changes won't */	2897	/* now local changes will be tracked by inotify, but remote changes won't */
2571	/* unless the filesystem it known to be local, we therefore still poll */	2898	/* unless the filesystem is known to be local, we therefore still poll */
2572	/* also do poll on <2.6.25, but with normal frequency */	2899	/* also do poll on <2.6.25, but with normal frequency */
2573	struct statfs sfs;
2574		2900
2575	if (fs_2625 && !statfs (w->path, &sfs))	2901	if (fs_2625 && !statfs (w->path, &sfs))
2576	if (sfs.f_type == 0x1373 /* devfs */	2902	if (sfs.f_type == 0x1373 /* devfs */
2577	|| sfs.f_type == 0xEF53 /* ext2/3 */	2903	|| sfs.f_type == 0xEF53 /* ext2/3 */
2578	|| sfs.f_type == 0x3153464a /* jfs */	2904	|| sfs.f_type == 0x3153464a /* jfs */
…		…
2667	return;	2993	return;
2668		2994
2669	fs_2625 = 1;	2995	fs_2625 = 1;
2670	}	2996	}
2671		2997
		2998	inline_size int
		2999	infy_newfd (void)
		3000	{
		3001	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3002	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3003	if (fd >= 0)
		3004	return fd;
		3005	#endif
		3006	return inotify_init ();
		3007	}
		3008
2672	inline_size void	3009	inline_size void
2673	infy_init (EV_P)	3010	infy_init (EV_P)
2674	{	3011	{
2675	if (fs_fd != -2)	3012	if (fs_fd != -2)
2676	return;	3013	return;
2677		3014
2678	fs_fd = -1;	3015	fs_fd = -1;
2679		3016
2680	check_2625 (EV_A);	3017	check_2625 (EV_A);
2681		3018
2682	fs_fd = inotify_init ();	3019	fs_fd = infy_newfd ();
2683		3020
2684	if (fs_fd >= 0)	3021	if (fs_fd >= 0)
2685	{	3022	{
		3023	fd_intern (fs_fd);
2686	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3024	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2687	ev_set_priority (&fs_w, EV_MAXPRI);	3025	ev_set_priority (&fs_w, EV_MAXPRI);
2688	ev_io_start (EV_A_ &fs_w);	3026	ev_io_start (EV_A_ &fs_w);
		3027	ev_unref (EV_A);
2689	}	3028	}
2690	}	3029	}
2691		3030
2692	inline_size void	3031	inline_size void
2693	infy_fork (EV_P)	3032	infy_fork (EV_P)
…		…
2695	int slot;	3034	int slot;
2696		3035
2697	if (fs_fd < 0)	3036	if (fs_fd < 0)
2698	return;	3037	return;
2699		3038
		3039	ev_ref (EV_A);
		3040	ev_io_stop (EV_A_ &fs_w);
2700	close (fs_fd);	3041	close (fs_fd);
2701	fs_fd = inotify_init ();	3042	fs_fd = infy_newfd ();
		3043
		3044	if (fs_fd >= 0)
		3045	{
		3046	fd_intern (fs_fd);
		3047	ev_io_set (&fs_w, fs_fd, EV_READ);
		3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
		3050	}
2702		3051
2703	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2704	{	3053	{
2705	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2706	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
2963	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2964	{	3313	{
2965	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2966		3315
2967	{	3316	{
2968	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
2969		3318
2970	while (fdchangecnt)	3319	while (fdchangecnt)
2971	{	3320	{
2972	fd_reify (EV_A);	3321	fd_reify (EV_A);
2973	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2981	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3330	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2982		3331
2983	ev_embed_stop (EV_A_ w);	3332	ev_embed_stop (EV_A_ w);
2984		3333
2985	{	3334	{
2986	struct ev_loop *loop = w->other;	3335	EV_P = w->other;
2987		3336
2988	ev_loop_fork (EV_A);	3337	ev_loop_fork (EV_A);
2989	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2990	}	3339	}
2991		3340
…		…
3005	{	3354	{
3006	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
3007	return;	3356	return;
3008		3357
3009	{	3358	{
3010	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
3011	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3360	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3012	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3361	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3013	}	3362	}
3014		3363
3015	EV_FREQUENT_CHECK;	3364	EV_FREQUENT_CHECK;
…		…
3127		3476
3128	void	3477	void
3129	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
3130	{	3479	{
3131	w->sent = 1;	3480	w->sent = 1;
3132	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
3133	}	3482	}
3134	#endif	3483	#endif
3135		3484
3136	/*****************************************************************************/	3485	/*****************************************************************************/
3137		3486
…		…
3201	}	3550	}
3202	}	3551	}
3203		3552
3204	/*****************************************************************************/	3553	/*****************************************************************************/
3205		3554
3206	#if 0	3555	#if EV_WALK_ENABLE
3207	void	3556	void
3208	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3557	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3209	{	3558	{
3210	int i, j;	3559	int i, j;
3211	ev_watcher_list *wl, *wn;	3560	ev_watcher_list *wl, *wn;
…		…
3227	#if EV_USE_INOTIFY	3576	#if EV_USE_INOTIFY
3228	if (ev_cb ((ev_io *)wl) == infy_cb)	3577	if (ev_cb ((ev_io *)wl) == infy_cb)
3229	;	3578	;
3230	else	3579	else
3231	#endif	3580	#endif
3232	if ((ev_io *)wl != &pipeev)	3581	if ((ev_io *)wl != &pipe_w)
3233	if (types & EV_IO)	3582	if (types & EV_IO)
3234	cb (EV_A_ EV_IO, wl);	3583	cb (EV_A_ EV_IO, wl);
3235		3584
3236	wl = wn;	3585	wl = wn;
3237	}	3586	}
…		…
3286	if (types & EV_CHECK)	3635	if (types & EV_CHECK)
3287	for (i = checkcnt; i--; )	3636	for (i = checkcnt; i--; )
3288	cb (EV_A_ EV_CHECK, checks [i]);	3637	cb (EV_A_ EV_CHECK, checks [i]);
3289		3638
3290	if (types & EV_SIGNAL)	3639	if (types & EV_SIGNAL)
3291	for (i = 0; i < signalmax; ++i)	3640	for (i = 0; i < EV_NSIG - 1; ++i)
3292	for (wl = signals [i].head; wl; )	3641	for (wl = signals [i].head; wl; )
3293	{	3642	{
3294	wn = wl->next;	3643	wn = wl->next;
3295	cb (EV_A_ EV_SIGNAL, wl);	3644	cb (EV_A_ EV_SIGNAL, wl);
3296	wl = wn;	3645	wl = wn;

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