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Comparing libev/ev.c (file contents):
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC vs.
Revision 1.316 by root, Fri Sep 18 21:02:12 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	{
		1664	/*ev_ref (EV_A);*/
		1665	/*ev_io_stop (EV_A_ &sigfd_w);*/
		1666
		1667	close (sigfd);
		1668	}
		1669	#endif
1436		1670
1437	#if EV_USE_INOTIFY	1671	#if EV_USE_INOTIFY
1438	if (fs_fd >= 0)	1672	if (fs_fd >= 0)
1439	close (fs_fd);	1673	close (fs_fd);
1440	#endif	1674	#endif
…		…
1464	#if EV_IDLE_ENABLE	1698	#if EV_IDLE_ENABLE
1465	array_free (idle, [i]);	1699	array_free (idle, [i]);
1466	#endif	1700	#endif
1467	}	1701	}
1468		1702
1469	ev_free (anfds); anfdmax = 0;	1703	ev_free (anfds); anfds = 0; anfdmax = 0;
1470		1704
1471	/* have to use the microsoft-never-gets-it-right macro */	1705	/* have to use the microsoft-never-gets-it-right macro */
1472	array_free (rfeed, EMPTY);	1706	array_free (rfeed, EMPTY);
1473	array_free (fdchange, EMPTY);	1707	array_free (fdchange, EMPTY);
1474	array_free (timer, EMPTY);	1708	array_free (timer, EMPTY);
…		…
1505	#endif	1739	#endif
1506	#if EV_USE_INOTIFY	1740	#if EV_USE_INOTIFY
1507	infy_fork (EV_A);	1741	infy_fork (EV_A);
1508	#endif	1742	#endif
1509		1743
1510	if (ev_is_active (&pipeev))	1744	if (ev_is_active (&pipe_w))
1511	{	1745	{
1512	/* this "locks" the handlers against writing to the pipe */	1746	/* this "locks" the handlers against writing to the pipe */
1513	/* while we modify the fd vars */	1747	/* while we modify the fd vars */
1514	gotsig = 1;	1748	sig_pending = 1;
1515	#if EV_ASYNC_ENABLE	1749	#if EV_ASYNC_ENABLE
1516	gotasync = 1;	1750	async_pending = 1;
1517	#endif	1751	#endif
1518		1752
1519	ev_ref (EV_A);	1753	ev_ref (EV_A);
1520	ev_io_stop (EV_A_ &pipeev);	1754	ev_io_stop (EV_A_ &pipe_w);
1521		1755
1522	#if EV_USE_EVENTFD	1756	#if EV_USE_EVENTFD
1523	if (evfd >= 0)	1757	if (evfd >= 0)
1524	close (evfd);	1758	close (evfd);
1525	#endif	1759	#endif
1526		1760
1527	if (evpipe [0] >= 0)	1761	if (evpipe [0] >= 0)
1528	{	1762	{
1529	close (evpipe [0]);	1763	EV_WIN32_CLOSE_FD (evpipe [0]);
1530	close (evpipe [1]);	1764	EV_WIN32_CLOSE_FD (evpipe [1]);
1531	}	1765	}
1532		1766
1533	evpipe_init (EV_A);	1767	evpipe_init (EV_A);
1534	/* now iterate over everything, in case we missed something */	1768	/* now iterate over everything, in case we missed something */
1535	pipecb (EV_A_ &pipeev, EV_READ);	1769	pipecb (EV_A_ &pipe_w, EV_READ);
1536	}	1770	}
1537		1771
1538	postfork = 0;	1772	postfork = 0;
1539	}	1773	}
1540		1774
1541	#if EV_MULTIPLICITY	1775	#if EV_MULTIPLICITY
1542		1776
1543	struct ev_loop *	1777	struct ev_loop *
1544	ev_loop_new (unsigned int flags)	1778	ev_loop_new (unsigned int flags)
1545	{	1779	{
1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1780	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547		1781
1548	memset (loop, 0, sizeof (struct ev_loop));	1782	memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550	loop_init (EV_A_ flags);	1783	loop_init (EV_A_ flags);
1551		1784
1552	if (ev_backend (EV_A))	1785	if (ev_backend (EV_A))
1553	return loop;	1786	return EV_A;
1554		1787
1555	return 0;	1788	return 0;
1556	}	1789	}
1557		1790
1558	void	1791	void
…		…
1565	void	1798	void
1566	ev_loop_fork (EV_P)	1799	ev_loop_fork (EV_P)
1567	{	1800	{
1568	postfork = 1; /* must be in line with ev_default_fork */	1801	postfork = 1; /* must be in line with ev_default_fork */
1569	}	1802	}
		1803	#endif /* multiplicity */
1570		1804
1571	#if EV_VERIFY	1805	#if EV_VERIFY
1572	static void noinline	1806	static void noinline
1573	verify_watcher (EV_P_ W w)	1807	verify_watcher (EV_P_ W w)
1574	{	1808	{
…		…
1602	verify_watcher (EV_A_ ws [cnt]);	1836	verify_watcher (EV_A_ ws [cnt]);
1603	}	1837	}
1604	}	1838	}
1605	#endif	1839	#endif
1606		1840
		1841	#if EV_MINIMAL < 2
1607	void	1842	void
1608	ev_loop_verify (EV_P)	1843	ev_loop_verify (EV_P)
1609	{	1844	{
1610	#if EV_VERIFY	1845	#if EV_VERIFY
1611	int i;	1846	int i;
…		…
1660	assert (checkmax >= checkcnt);	1895	assert (checkmax >= checkcnt);
1661	array_verify (EV_A_ (W *)checks, checkcnt);	1896	array_verify (EV_A_ (W *)checks, checkcnt);
1662		1897
1663	# if 0	1898	# if 0
1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1899	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)	1900	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1666	# endif
1667	#endif	1901	# endif
		1902	#endif
1668	}	1903	}
1669		1904	#endif
1670	#endif /* multiplicity */
1671		1905
1672	#if EV_MULTIPLICITY	1906	#if EV_MULTIPLICITY
1673	struct ev_loop *	1907	struct ev_loop *
1674	ev_default_loop_init (unsigned int flags)	1908	ev_default_loop_init (unsigned int flags)
1675	#else	1909	#else
…		…
1678	#endif	1912	#endif
1679	{	1913	{
1680	if (!ev_default_loop_ptr)	1914	if (!ev_default_loop_ptr)
1681	{	1915	{
1682	#if EV_MULTIPLICITY	1916	#if EV_MULTIPLICITY
1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1917	EV_P = ev_default_loop_ptr = &default_loop_struct;
1684	#else	1918	#else
1685	ev_default_loop_ptr = 1;	1919	ev_default_loop_ptr = 1;
1686	#endif	1920	#endif
1687		1921
1688	loop_init (EV_A_ flags);	1922	loop_init (EV_A_ flags);
…		…
1705		1939
1706	void	1940	void
1707	ev_default_destroy (void)	1941	ev_default_destroy (void)
1708	{	1942	{
1709	#if EV_MULTIPLICITY	1943	#if EV_MULTIPLICITY
1710	struct ev_loop *loop = ev_default_loop_ptr;	1944	EV_P = ev_default_loop_ptr;
1711	#endif	1945	#endif
1712		1946
1713	ev_default_loop_ptr = 0;	1947	ev_default_loop_ptr = 0;
1714		1948
1715	#ifndef _WIN32	1949	#ifndef _WIN32
…		…
1722		1956
1723	void	1957	void
1724	ev_default_fork (void)	1958	ev_default_fork (void)
1725	{	1959	{
1726	#if EV_MULTIPLICITY	1960	#if EV_MULTIPLICITY
1727	struct ev_loop *loop = ev_default_loop_ptr;	1961	EV_P = ev_default_loop_ptr;
1728	#endif	1962	#endif
1729		1963
1730	postfork = 1; /* must be in line with ev_loop_fork */	1964	postfork = 1; /* must be in line with ev_loop_fork */
1731	}	1965	}
1732		1966
…		…
1736	ev_invoke (EV_P_ void *w, int revents)	1970	ev_invoke (EV_P_ void *w, int revents)
1737	{	1971	{
1738	EV_CB_INVOKE ((W)w, revents);	1972	EV_CB_INVOKE ((W)w, revents);
1739	}	1973	}
1740		1974
1741	inline_speed void	1975	unsigned int
1742	call_pending (EV_P)	1976	ev_pending_count (EV_P)
		1977	{
		1978	int pri;
		1979	unsigned int count = 0;
		1980
		1981	for (pri = NUMPRI; pri--; )
		1982	count += pendingcnt [pri];
		1983
		1984	return count;
		1985	}
		1986
		1987	void noinline
		1988	ev_invoke_pending (EV_P)
1743	{	1989	{
1744	int pri;	1990	int pri;
1745		1991
1746	for (pri = NUMPRI; pri--; )	1992	for (pri = NUMPRI; pri--; )
1747	while (pendingcnt [pri])	1993	while (pendingcnt [pri])
1748	{	1994	{
1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1995	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750		1996
1751	if (expect_true (p->w))
1752	{
1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	1997	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1998	/* ^ this is no longer true, as pending_w could be here */
1754		1999
1755	p->w->pending = 0;	2000	p->w->pending = 0;
1756	EV_CB_INVOKE (p->w, p->events);	2001	EV_CB_INVOKE (p->w, p->events);
1757	EV_FREQUENT_CHECK;	2002	EV_FREQUENT_CHECK;
1758	}
1759	}	2003	}
1760	}	2004	}
1761		2005
1762	#if EV_IDLE_ENABLE	2006	#if EV_IDLE_ENABLE
		2007	/* make idle watchers pending. this handles the "call-idle */
		2008	/* only when higher priorities are idle" logic */
1763	inline_size void	2009	inline_size void
1764	idle_reify (EV_P)	2010	idle_reify (EV_P)
1765	{	2011	{
1766	if (expect_false (idleall))	2012	if (expect_false (idleall))
1767	{	2013	{
…		…
1780	}	2026	}
1781	}	2027	}
1782	}	2028	}
1783	#endif	2029	#endif
1784		2030
		2031	/* make timers pending */
1785	inline_size void	2032	inline_size void
1786	timers_reify (EV_P)	2033	timers_reify (EV_P)
1787	{	2034	{
1788	EV_FREQUENT_CHECK;	2035	EV_FREQUENT_CHECK;
1789		2036
…		…
1818	feed_reverse_done (EV_A_ EV_TIMEOUT);	2065	feed_reverse_done (EV_A_ EV_TIMEOUT);
1819	}	2066	}
1820	}	2067	}
1821		2068
1822	#if EV_PERIODIC_ENABLE	2069	#if EV_PERIODIC_ENABLE
		2070	/* make periodics pending */
1823	inline_size void	2071	inline_size void
1824	periodics_reify (EV_P)	2072	periodics_reify (EV_P)
1825	{	2073	{
1826	EV_FREQUENT_CHECK;	2074	EV_FREQUENT_CHECK;
1827		2075
…		…
1874		2122
1875	feed_reverse_done (EV_A_ EV_PERIODIC);	2123	feed_reverse_done (EV_A_ EV_PERIODIC);
1876	}	2124	}
1877	}	2125	}
1878		2126
		2127	/* simply recalculate all periodics */
		2128	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1879	static void noinline	2129	static void noinline
1880	periodics_reschedule (EV_P)	2130	periodics_reschedule (EV_P)
1881	{	2131	{
1882	int i;	2132	int i;
1883		2133
…		…
1896		2146
1897	reheap (periodics, periodiccnt);	2147	reheap (periodics, periodiccnt);
1898	}	2148	}
1899	#endif	2149	#endif
1900		2150
		2151	/* adjust all timers by a given offset */
1901	static void noinline	2152	static void noinline
1902	timers_reschedule (EV_P_ ev_tstamp adjust)	2153	timers_reschedule (EV_P_ ev_tstamp adjust)
1903	{	2154	{
1904	int i;	2155	int i;
1905		2156
…		…
1909	ANHE_w (*he)->at += adjust;	2160	ANHE_w (*he)->at += adjust;
1910	ANHE_at_cache (*he);	2161	ANHE_at_cache (*he);
1911	}	2162	}
1912	}	2163	}
1913		2164
		2165	/* fetch new monotonic and realtime times from the kernel */
		2166	/* also detetc if there was a timejump, and act accordingly */
1914	inline_speed void	2167	inline_speed void
1915	time_update (EV_P_ ev_tstamp max_block)	2168	time_update (EV_P_ ev_tstamp max_block)
1916	{	2169	{
1917	int i;
1918
1919	#if EV_USE_MONOTONIC	2170	#if EV_USE_MONOTONIC
1920	if (expect_true (have_monotonic))	2171	if (expect_true (have_monotonic))
1921	{	2172	{
		2173	int i;
1922	ev_tstamp odiff = rtmn_diff;	2174	ev_tstamp odiff = rtmn_diff;
1923		2175
1924	mn_now = get_clock ();	2176	mn_now = get_clock ();
1925		2177
1926	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2178	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1976		2228
1977	mn_now = ev_rt_now;	2229	mn_now = ev_rt_now;
1978	}	2230	}
1979	}	2231	}
1980		2232
1981	static int loop_done;
1982
1983	void	2233	void
1984	ev_loop (EV_P_ int flags)	2234	ev_loop (EV_P_ int flags)
1985	{	2235	{
		2236	#if EV_MINIMAL < 2
		2237	++loop_depth;
		2238	#endif
		2239
		2240	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2241
1986	loop_done = EVUNLOOP_CANCEL;	2242	loop_done = EVUNLOOP_CANCEL;
1987		2243
1988	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2244	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989		2245
1990	do	2246	do
1991	{	2247	{
1992	#if EV_VERIFY >= 2	2248	#if EV_VERIFY >= 2
1993	ev_loop_verify (EV_A);	2249	ev_loop_verify (EV_A);
…		…
2006	/* we might have forked, so queue fork handlers */	2262	/* we might have forked, so queue fork handlers */
2007	if (expect_false (postfork))	2263	if (expect_false (postfork))
2008	if (forkcnt)	2264	if (forkcnt)
2009	{	2265	{
2010	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2266	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011	call_pending (EV_A);	2267	EV_INVOKE_PENDING;
2012	}	2268	}
2013	#endif	2269	#endif
2014		2270
2015	/* queue prepare watchers (and execute them) */	2271	/* queue prepare watchers (and execute them) */
2016	if (expect_false (preparecnt))	2272	if (expect_false (preparecnt))
2017	{	2273	{
2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2274	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019	call_pending (EV_A);	2275	EV_INVOKE_PENDING;
2020	}	2276	}
		2277
		2278	if (expect_false (loop_done))
		2279	break;
2021		2280
2022	/* we might have forked, so reify kernel state if necessary */	2281	/* we might have forked, so reify kernel state if necessary */
2023	if (expect_false (postfork))	2282	if (expect_false (postfork))
2024	loop_fork (EV_A);	2283	loop_fork (EV_A);
2025		2284
…		…
2031	ev_tstamp waittime = 0.;	2290	ev_tstamp waittime = 0.;
2032	ev_tstamp sleeptime = 0.;	2291	ev_tstamp sleeptime = 0.;
2033		2292
2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2293	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2035	{	2294	{
		2295	/* remember old timestamp for io_blocktime calculation */
		2296	ev_tstamp prev_mn_now = mn_now;
		2297
2036	/* update time to cancel out callback processing overhead */	2298	/* update time to cancel out callback processing overhead */
2037	time_update (EV_A_ 1e100);	2299	time_update (EV_A_ 1e100);
		2300
		2301	waittime = MAX_BLOCKTIME;
2038		2302
2039	if (timercnt)	2303	if (timercnt)
2040	{	2304	{
2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2305	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2042	if (waittime > to) waittime = to;	2306	if (waittime > to) waittime = to;
…		…
2048	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2312	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2049	if (waittime > to) waittime = to;	2313	if (waittime > to) waittime = to;
2050	}	2314	}
2051	#endif	2315	#endif
2052		2316
		2317	/* don't let timeouts decrease the waittime below timeout_blocktime */
2053	if (expect_false (waittime < timeout_blocktime))	2318	if (expect_false (waittime < timeout_blocktime))
2054	waittime = timeout_blocktime;	2319	waittime = timeout_blocktime;
2055		2320
2056	sleeptime = waittime - backend_fudge;	2321	/* extra check because io_blocktime is commonly 0 */
2057
2058	if (expect_true (sleeptime > io_blocktime))	2322	if (expect_false (io_blocktime))
2059	sleeptime = io_blocktime;
2060
2061	if (sleeptime)
2062	{	2323	{
		2324	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2325
		2326	if (sleeptime > waittime - backend_fudge)
		2327	sleeptime = waittime - backend_fudge;
		2328
		2329	if (expect_true (sleeptime > 0.))
		2330	{
2063	ev_sleep (sleeptime);	2331	ev_sleep (sleeptime);
2064	waittime -= sleeptime;	2332	waittime -= sleeptime;
		2333	}
2065	}	2334	}
2066	}	2335	}
2067		2336
		2337	#if EV_MINIMAL < 2
2068	++loop_count;	2338	++loop_count;
		2339	#endif
		2340	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2069	backend_poll (EV_A_ waittime);	2341	backend_poll (EV_A_ waittime);
		2342	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2070		2343
2071	/* update ev_rt_now, do magic */	2344	/* update ev_rt_now, do magic */
2072	time_update (EV_A_ waittime + sleeptime);	2345	time_update (EV_A_ waittime + sleeptime);
2073	}	2346	}
2074		2347
…		…
2085		2358
2086	/* queue check watchers, to be executed first */	2359	/* queue check watchers, to be executed first */
2087	if (expect_false (checkcnt))	2360	if (expect_false (checkcnt))
2088	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2361	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2089		2362
2090	call_pending (EV_A);	2363	EV_INVOKE_PENDING;
2091	}	2364	}
2092	while (expect_true (	2365	while (expect_true (
2093	activecnt	2366	activecnt
2094	&& !loop_done	2367	&& !loop_done
2095	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2368	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2096	));	2369	));
2097		2370
2098	if (loop_done == EVUNLOOP_ONE)	2371	if (loop_done == EVUNLOOP_ONE)
2099	loop_done = EVUNLOOP_CANCEL;	2372	loop_done = EVUNLOOP_CANCEL;
		2373
		2374	#if EV_MINIMAL < 2
		2375	--loop_depth;
		2376	#endif
2100	}	2377	}
2101		2378
2102	void	2379	void
2103	ev_unloop (EV_P_ int how)	2380	ev_unloop (EV_P_ int how)
2104	{	2381	{
…		…
2135	ev_tstamp mn_prev = mn_now;	2412	ev_tstamp mn_prev = mn_now;
2136		2413
2137	ev_now_update (EV_A);	2414	ev_now_update (EV_A);
2138	timers_reschedule (EV_A_ mn_now - mn_prev);	2415	timers_reschedule (EV_A_ mn_now - mn_prev);
2139	#if EV_PERIODIC_ENABLE	2416	#if EV_PERIODIC_ENABLE
		2417	/* TODO: really do this? */
2140	periodics_reschedule (EV_A);	2418	periodics_reschedule (EV_A);
2141	#endif	2419	#endif
2142	}	2420	}
2143		2421
2144	/*****************************************************************************/	2422	/*****************************************************************************/
		2423	/* singly-linked list management, used when the expected list length is short */
2145		2424
2146	inline_size void	2425	inline_size void
2147	wlist_add (WL *head, WL elem)	2426	wlist_add (WL *head, WL elem)
2148	{	2427	{
2149	elem->next = *head;	2428	elem->next = *head;
…		…
2153	inline_size void	2432	inline_size void
2154	wlist_del (WL *head, WL elem)	2433	wlist_del (WL *head, WL elem)
2155	{	2434	{
2156	while (*head)	2435	while (*head)
2157	{	2436	{
2158	if (*head == elem)	2437	if (expect_true (*head == elem))
2159	{	2438	{
2160	*head = elem->next;	2439	*head = elem->next;
2161	return;	2440	break;
2162	}	2441	}
2163		2442
2164	head = &(*head)->next;	2443	head = &(*head)->next;
2165	}	2444	}
2166	}	2445	}
2167		2446
		2447	/* internal, faster, version of ev_clear_pending */
2168	inline_speed void	2448	inline_speed void
2169	clear_pending (EV_P_ W w)	2449	clear_pending (EV_P_ W w)
2170	{	2450	{
2171	if (w->pending)	2451	if (w->pending)
2172	{	2452	{
2173	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2453	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174	w->pending = 0;	2454	w->pending = 0;
2175	}	2455	}
2176	}	2456	}
2177		2457
2178	int	2458	int
…		…
2182	int pending = w_->pending;	2462	int pending = w_->pending;
2183		2463
2184	if (expect_true (pending))	2464	if (expect_true (pending))
2185	{	2465	{
2186	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2466	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2467	p->w = (W)&pending_w;
2187	w_->pending = 0;	2468	w_->pending = 0;
2188	p->w = 0;
2189	return p->events;	2469	return p->events;
2190	}	2470	}
2191	else	2471	else
2192	return 0;	2472	return 0;
2193	}	2473	}
2194		2474
2195	inline_size void	2475	inline_size void
2196	pri_adjust (EV_P_ W w)	2476	pri_adjust (EV_P_ W w)
2197	{	2477	{
2198	int pri = w->priority;	2478	int pri = ev_priority (w);
2199	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2479	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2480	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201	w->priority = pri;	2481	ev_set_priority (w, pri);
2202	}	2482	}
2203		2483
2204	inline_speed void	2484	inline_speed void
2205	ev_start (EV_P_ W w, int active)	2485	ev_start (EV_P_ W w, int active)
2206	{	2486	{
…		…
2233		2513
2234	ev_start (EV_A_ (W)w, 1);	2514	ev_start (EV_A_ (W)w, 1);
2235	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2515	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236	wlist_add (&anfds[fd].head, (WL)w);	2516	wlist_add (&anfds[fd].head, (WL)w);
2237		2517
2238	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2518	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239	w->events &= ~EV__IOFDSET;	2519	w->events &= ~EV__IOFDSET;
2240		2520
2241	EV_FREQUENT_CHECK;	2521	EV_FREQUENT_CHECK;
2242	}	2522	}
2243		2523
…		…
2337	}	2617	}
2338		2618
2339	EV_FREQUENT_CHECK;	2619	EV_FREQUENT_CHECK;
2340	}	2620	}
2341		2621
		2622	ev_tstamp
		2623	ev_timer_remaining (EV_P_ ev_timer *w)
		2624	{
		2625	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2626	}
		2627
2342	#if EV_PERIODIC_ENABLE	2628	#if EV_PERIODIC_ENABLE
2343	void noinline	2629	void noinline
2344	ev_periodic_start (EV_P_ ev_periodic *w)	2630	ev_periodic_start (EV_P_ ev_periodic *w)
2345	{	2631	{
2346	if (expect_false (ev_is_active (w)))	2632	if (expect_false (ev_is_active (w)))
…		…
2413	#endif	2699	#endif
2414		2700
2415	void noinline	2701	void noinline
2416	ev_signal_start (EV_P_ ev_signal *w)	2702	ev_signal_start (EV_P_ ev_signal *w)
2417	{	2703	{
2418	#if EV_MULTIPLICITY
2419	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2420	#endif
2421	if (expect_false (ev_is_active (w)))	2704	if (expect_false (ev_is_active (w)))
2422	return;	2705	return;
2423		2706
2424	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2707	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425		2708
2426	evpipe_init (EV_A);	2709	#if EV_MULTIPLICITY
		2710	assert (("libev: a signal must not be attached to two different loops",
		2711	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427		2712
2428	EV_FREQUENT_CHECK;	2713	signals [w->signum - 1].loop = EV_A;
		2714	#endif
2429		2715
		2716	EV_FREQUENT_CHECK;
		2717
		2718	#if EV_USE_SIGNALFD
		2719	if (sigfd == -2)
2430	{	2720	{
2431	#ifndef _WIN32	2721	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432	sigset_t full, prev;	2722	if (sigfd < 0 && errno == EINVAL)
2433	sigfillset (&full);	2723	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434	sigprocmask (SIG_SETMASK, &full, &prev);
2435	#endif
2436		2724
2437	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2725	if (sigfd >= 0)
		2726	{
		2727	fd_intern (sigfd); /* doing it twice will not hurt */
2438		2728
2439	#ifndef _WIN32	2729	sigemptyset (&sigfd_set);
2440	sigprocmask (SIG_SETMASK, &prev, 0);	2730
2441	#endif	2731	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2732	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2733	ev_io_start (EV_A_ &sigfd_w);
		2734	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2735	}
2442	}	2736	}
		2737
		2738	if (sigfd >= 0)
		2739	{
		2740	/* TODO: check .head */
		2741	sigaddset (&sigfd_set, w->signum);
		2742	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2743
		2744	signalfd (sigfd, &sigfd_set, 0);
		2745	}
		2746	#endif
2443		2747
2444	ev_start (EV_A_ (W)w, 1);	2748	ev_start (EV_A_ (W)w, 1);
2445	wlist_add (&signals [w->signum - 1].head, (WL)w);	2749	wlist_add (&signals [w->signum - 1].head, (WL)w);
2446		2750
2447	if (!((WL)w)->next)	2751	if (!((WL)w)->next)
		2752	# if EV_USE_SIGNALFD
		2753	if (sigfd < 0) /*TODO*/
		2754	# endif
2448	{	2755	{
2449	#if _WIN32	2756	# if _WIN32
2450	signal (w->signum, ev_sighandler);	2757	signal (w->signum, ev_sighandler);
2451	#else	2758	# else
2452	struct sigaction sa;	2759	struct sigaction sa;
		2760
		2761	evpipe_init (EV_A);
		2762
2453	sa.sa_handler = ev_sighandler;	2763	sa.sa_handler = ev_sighandler;
2454	sigfillset (&sa.sa_mask);	2764	sigfillset (&sa.sa_mask);
2455	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2765	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456	sigaction (w->signum, &sa, 0);	2766	sigaction (w->signum, &sa, 0);
		2767
		2768	sigemptyset (&sa.sa_mask);
		2769	sigaddset (&sa.sa_mask, w->signum);
		2770	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2457	#endif	2771	#endif
2458	}	2772	}
2459		2773
2460	EV_FREQUENT_CHECK;	2774	EV_FREQUENT_CHECK;
2461	}	2775	}
2462		2776
2463	void noinline	2777	void noinline
…		…
2471		2785
2472	wlist_del (&signals [w->signum - 1].head, (WL)w);	2786	wlist_del (&signals [w->signum - 1].head, (WL)w);
2473	ev_stop (EV_A_ (W)w);	2787	ev_stop (EV_A_ (W)w);
2474		2788
2475	if (!signals [w->signum - 1].head)	2789	if (!signals [w->signum - 1].head)
		2790	{
		2791	#if EV_MULTIPLICITY
		2792	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2793	#endif
		2794	#if EV_USE_SIGNALFD
		2795	if (sigfd >= 0)
		2796	{
		2797	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2798	sigdelset (&sigfd_set, w->signum);
		2799	signalfd (sigfd, &sigfd_set, 0);
		2800	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2801	/*TODO: maybe unblock signal? */
		2802	}
		2803	else
		2804	#endif
2476	signal (w->signum, SIG_DFL);	2805	signal (w->signum, SIG_DFL);
		2806	}
2477		2807
2478	EV_FREQUENT_CHECK;	2808	EV_FREQUENT_CHECK;
2479	}	2809	}
2480		2810
2481	void	2811	void
…		…
2561	}	2891	}
2562	}	2892	}
2563		2893
2564	if (w->wd >= 0)	2894	if (w->wd >= 0)
2565	{	2895	{
		2896	struct statfs sfs;
		2897
2566	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2898	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2567		2899
2568	/* now local changes will be tracked by inotify, but remote changes won't */	2900	/* now local changes will be tracked by inotify, but remote changes won't */
2569	/* unless the filesystem it known to be local, we therefore still poll */	2901	/* unless the filesystem it known to be local, we therefore still poll */
2570	/* also do poll on <2.6.25, but with normal frequency */	2902	/* also do poll on <2.6.25, but with normal frequency */
2571	struct statfs sfs;
2572		2903
2573	if (fs_2625 && !statfs (w->path, &sfs))	2904	if (fs_2625 && !statfs (w->path, &sfs))
2574	if (sfs.f_type == 0x1373 /* devfs */	2905	if (sfs.f_type == 0x1373 /* devfs */
2575	|| sfs.f_type == 0xEF53 /* ext2/3 */	2906	|| sfs.f_type == 0xEF53 /* ext2/3 */
2576	|| sfs.f_type == 0x3153464a /* jfs */	2907	|| sfs.f_type == 0x3153464a /* jfs */
…		…
2665	return;	2996	return;
2666		2997
2667	fs_2625 = 1;	2998	fs_2625 = 1;
2668	}	2999	}
2669		3000
		3001	inline_size int
		3002	infy_newfd (void)
		3003	{
		3004	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3005	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3006	if (fd >= 0)
		3007	return fd;
		3008	#endif
		3009	return inotify_init ();
		3010	}
		3011
2670	inline_size void	3012	inline_size void
2671	infy_init (EV_P)	3013	infy_init (EV_P)
2672	{	3014	{
2673	if (fs_fd != -2)	3015	if (fs_fd != -2)
2674	return;	3016	return;
2675		3017
2676	fs_fd = -1;	3018	fs_fd = -1;
2677		3019
2678	check_2625 (EV_A);	3020	check_2625 (EV_A);
2679		3021
2680	fs_fd = inotify_init ();	3022	fs_fd = infy_newfd ();
2681		3023
2682	if (fs_fd >= 0)	3024	if (fs_fd >= 0)
2683	{	3025	{
		3026	fd_intern (fs_fd);
2684	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3027	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685	ev_set_priority (&fs_w, EV_MAXPRI);	3028	ev_set_priority (&fs_w, EV_MAXPRI);
2686	ev_io_start (EV_A_ &fs_w);	3029	ev_io_start (EV_A_ &fs_w);
2687	}	3030	}
2688	}	3031	}
…		…
2693	int slot;	3036	int slot;
2694		3037
2695	if (fs_fd < 0)	3038	if (fs_fd < 0)
2696	return;	3039	return;
2697		3040
		3041	ev_io_stop (EV_A_ &fs_w);
2698	close (fs_fd);	3042	close (fs_fd);
2699	fs_fd = inotify_init ();	3043	fs_fd = infy_newfd ();
		3044
		3045	if (fs_fd >= 0)
		3046	{
		3047	fd_intern (fs_fd);
		3048	ev_io_set (&fs_w, fs_fd, EV_READ);
		3049	ev_io_start (EV_A_ &fs_w);
		3050	}
2700		3051
2701	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2702	{	3053	{
2703	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2704	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
2961	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962	{	3313	{
2963	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964		3315
2965	{	3316	{
2966	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
2967		3318
2968	while (fdchangecnt)	3319	while (fdchangecnt)
2969	{	3320	{
2970	fd_reify (EV_A);	3321	fd_reify (EV_A);
2971	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2979	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));
2980		3331
2981	ev_embed_stop (EV_A_ w);	3332	ev_embed_stop (EV_A_ w);
2982		3333
2983	{	3334	{
2984	struct ev_loop *loop = w->other;	3335	EV_P = w->other;
2985		3336
2986	ev_loop_fork (EV_A);	3337	ev_loop_fork (EV_A);
2987	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2988	}	3339	}
2989		3340
…		…
3003	{	3354	{
3004	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
3005	return;	3356	return;
3006		3357
3007	{	3358	{
3008	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
3009	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 ()));
3010	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);
3011	}	3362	}
3012		3363
3013	EV_FREQUENT_CHECK;	3364	EV_FREQUENT_CHECK;
…		…
3125		3476
3126	void	3477	void
3127	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
3128	{	3479	{
3129	w->sent = 1;	3480	w->sent = 1;
3130	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
3131	}	3482	}
3132	#endif	3483	#endif
3133		3484
3134	/*****************************************************************************/	3485	/*****************************************************************************/
3135		3486
…		…
3199	}	3550	}
3200	}	3551	}
3201		3552
3202	/*****************************************************************************/	3553	/*****************************************************************************/
3203		3554
3204	#if 0	3555	#if EV_WALK_ENABLE
3205	void	3556	void
3206	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))
3207	{	3558	{
3208	int i, j;	3559	int i, j;
3209	ev_watcher_list *wl, *wn;	3560	ev_watcher_list *wl, *wn;
…		…
3225	#if EV_USE_INOTIFY	3576	#if EV_USE_INOTIFY
3226	if (ev_cb ((ev_io *)wl) == infy_cb)	3577	if (ev_cb ((ev_io *)wl) == infy_cb)
3227	;	3578	;
3228	else	3579	else
3229	#endif	3580	#endif
3230	if ((ev_io *)wl != &pipeev)	3581	if ((ev_io *)wl != &pipe_w)
3231	if (types & EV_IO)	3582	if (types & EV_IO)
3232	cb (EV_A_ EV_IO, wl);	3583	cb (EV_A_ EV_IO, wl);
3233		3584
3234	wl = wn;	3585	wl = wn;
3235	}	3586	}
…		…
3284	if (types & EV_CHECK)	3635	if (types & EV_CHECK)
3285	for (i = checkcnt; i--; )	3636	for (i = checkcnt; i--; )
3286	cb (EV_A_ EV_CHECK, checks [i]);	3637	cb (EV_A_ EV_CHECK, checks [i]);
3287		3638
3288	if (types & EV_SIGNAL)	3639	if (types & EV_SIGNAL)
3289	for (i = 0; i < signalmax; ++i)	3640	for (i = 0; i < EV_NSIG - 1; ++i)
3290	for (wl = signals [i].head; wl; )	3641	for (wl = signals [i].head; wl; )
3291	{	3642	{
3292	wn = wl->next;	3643	wn = wl->next;
3293	cb (EV_A_ EV_SIGNAL, wl);	3644	cb (EV_A_ EV_SIGNAL, wl);
3294	wl = wn;	3645	wl = wn;

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