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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 1.325 by root, Sun Jan 24 12:31:55 2010 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
…		…
108	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
109	# endif	111	# endif
110	# endif	112	# endif
111		113
112	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
113	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
115	# else	117	# else
116	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
117	# endif	119	# endif
118	# endif	120	# endif
…		…
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
…		…
143		153
144	#endif	154	#endif
145		155
146	#include <math.h>	156	#include <math.h>
147	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
148	#include <fcntl.h>	159	#include <fcntl.h>
149	#include <stddef.h>	160	#include <stddef.h>
150		161
151	#include <stdio.h>	162	#include <stdio.h>
152		163
…		…
176	# endif	187	# endif
177	#endif	188	#endif
178		189
179	/* this block tries to deduce configuration from header-defined symbols and defaults */	190	/* this block tries to deduce configuration from header-defined symbols and defaults */
180		191
		192	/* try to deduce the maximum number of signals on this platform */
		193	#if defined (EV_NSIG)
		194	/* use what's provided */
		195	#elif defined (NSIG)
		196	# define EV_NSIG (NSIG)
		197	#elif defined(_NSIG)
		198	# define EV_NSIG (_NSIG)
		199	#elif defined (SIGMAX)
		200	# define EV_NSIG (SIGMAX+1)
		201	#elif defined (SIG_MAX)
		202	# define EV_NSIG (SIG_MAX+1)
		203	#elif defined (_SIG_MAX)
		204	# define EV_NSIG (_SIG_MAX+1)
		205	#elif defined (MAXSIG)
		206	# define EV_NSIG (MAXSIG+1)
		207	#elif defined (MAX_SIG)
		208	# define EV_NSIG (MAX_SIG+1)
		209	#elif defined (SIGARRAYSIZE)
		210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		211	#elif defined (_sys_nsig)
		212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		213	#else
		214	# error "unable to find value for NSIG, please report"
		215	/* to make it compile regardless, just remove the above line */
		216	# define EV_NSIG 65
		217	#endif
		218
181	#ifndef EV_USE_CLOCK_SYSCALL	219	#ifndef EV_USE_CLOCK_SYSCALL
182	# if __linux && __GLIBC__ >= 2	220	# if __linux && __GLIBC__ >= 2
183	# define EV_USE_CLOCK_SYSCALL 1	221	# define EV_USE_CLOCK_SYSCALL 1
184	# else	222	# else
185	# define EV_USE_CLOCK_SYSCALL 0	223	# define EV_USE_CLOCK_SYSCALL 0
…		…
264	# else	302	# else
265	# define EV_USE_EVENTFD 0	303	# define EV_USE_EVENTFD 0
266	# endif	304	# endif
267	#endif	305	#endif
268		306
		307	#ifndef EV_USE_SIGNALFD
		308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		309	# define EV_USE_SIGNALFD 1
		310	# else
		311	# define EV_USE_SIGNALFD 0
		312	# endif
		313	#endif
		314
269	#if 0 /* debugging */	315	#if 0 /* debugging */
270	# define EV_VERIFY 3	316	# define EV_VERIFY 3
271	# define EV_USE_4HEAP 1	317	# define EV_USE_4HEAP 1
272	# define EV_HEAP_CACHE_AT 1	318	# define EV_HEAP_CACHE_AT 1
273	#endif	319	#endif
…		…
282		328
283	#ifndef EV_HEAP_CACHE_AT	329	#ifndef EV_HEAP_CACHE_AT
284	# define EV_HEAP_CACHE_AT !EV_MINIMAL	330	# define EV_HEAP_CACHE_AT !EV_MINIMAL
285	#endif	331	#endif
286		332
		333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		334	/* which makes programs even slower. might work on other unices, too. */
		335	#if EV_USE_CLOCK_SYSCALL
		336	# include <syscall.h>
		337	# ifdef SYS_clock_gettime
		338	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		339	# undef EV_USE_MONOTONIC
		340	# define EV_USE_MONOTONIC 1
		341	# else
		342	# undef EV_USE_CLOCK_SYSCALL
		343	# define EV_USE_CLOCK_SYSCALL 0
		344	# endif
		345	#endif
		346
287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		348
		349	#ifdef _AIX
		350	/* AIX has a completely broken poll.h header */
		351	# undef EV_USE_POLL
		352	# define EV_USE_POLL 0
		353	#endif
288		354
289	#ifndef CLOCK_MONOTONIC	355	#ifndef CLOCK_MONOTONIC
290	# undef EV_USE_MONOTONIC	356	# undef EV_USE_MONOTONIC
291	# define EV_USE_MONOTONIC 0	357	# define EV_USE_MONOTONIC 0
292	#endif	358	#endif
…		…
320		386
321	#if EV_SELECT_IS_WINSOCKET	387	#if EV_SELECT_IS_WINSOCKET
322	# include <winsock.h>	388	# include <winsock.h>
323	#endif	389	#endif
324		390
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	391	#if EV_USE_EVENTFD
335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	392	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
336	# include <stdint.h>	393	# include <stdint.h>
		394	# ifndef EFD_NONBLOCK
		395	# define EFD_NONBLOCK O_NONBLOCK
		396	# endif
		397	# ifndef EFD_CLOEXEC
		398	# ifdef O_CLOEXEC
		399	# define EFD_CLOEXEC O_CLOEXEC
		400	# else
		401	# define EFD_CLOEXEC 02000000
		402	# endif
		403	# endif
337	# ifdef __cplusplus	404	# ifdef __cplusplus
338	extern "C" {	405	extern "C" {
339	# endif	406	# endif
340	int eventfd (unsigned int initval, int flags);	407	int eventfd (unsigned int initval, int flags);
341	# ifdef __cplusplus	408	# ifdef __cplusplus
342	}	409	}
343	# endif	410	# endif
344	#endif	411	#endif
		412
		413	#if EV_USE_SIGNALFD
		414	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		415	# include <stdint.h>
		416	# ifndef SFD_NONBLOCK
		417	# define SFD_NONBLOCK O_NONBLOCK
		418	# endif
		419	# ifndef SFD_CLOEXEC
		420	# ifdef O_CLOEXEC
		421	# define SFD_CLOEXEC O_CLOEXEC
		422	# else
		423	# define SFD_CLOEXEC 02000000
		424	# endif
		425	# endif
		426	# ifdef __cplusplus
		427	extern "C" {
		428	# endif
		429	int signalfd (int fd, const sigset_t *mask, int flags);
		430
		431	struct signalfd_siginfo
		432	{
		433	uint32_t ssi_signo;
		434	char pad[128 - sizeof (uint32_t)];
		435	};
		436	# ifdef __cplusplus
		437	}
		438	# endif
		439	#endif
		440
345		441
346	/**/	442	/**/
347		443
348	#if EV_VERIFY >= 3	444	#if EV_VERIFY >= 3
349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	445	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
…		…
361	*/	457	*/
362	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	458	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
363		459
364	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	460	#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) */	461	#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		462
368	#if __GNUC__ >= 4	463	#if __GNUC__ >= 4
369	# define expect(expr,value) __builtin_expect ((expr),(value))	464	# define expect(expr,value) __builtin_expect ((expr),(value))
370	# define noinline __attribute__ ((noinline))	465	# define noinline __attribute__ ((noinline))
371	#else	466	#else
…		…
384	# define inline_speed static noinline	479	# define inline_speed static noinline
385	#else	480	#else
386	# define inline_speed static inline	481	# define inline_speed static inline
387	#endif	482	#endif
388		483
389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	484	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		485
		486	#if EV_MINPRI == EV_MAXPRI
		487	# define ABSPRI(w) (((W)w), 0)
		488	#else
390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	489	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		490	#endif
391		491
392	#define EMPTY /* required for microsofts broken pseudo-c compiler */	492	#define EMPTY /* required for microsofts broken pseudo-c compiler */
393	#define EMPTY2(a,b) /* used to suppress some warnings */	493	#define EMPTY2(a,b) /* used to suppress some warnings */
394		494
395	typedef ev_watcher *W;	495	typedef ev_watcher *W;
…		…
407		507
408	#if EV_USE_MONOTONIC	508	#if EV_USE_MONOTONIC
409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	509	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
410	#endif	510	#endif
411		511
		512	#ifndef EV_FD_TO_WIN32_HANDLE
		513	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		514	#endif
		515	#ifndef EV_WIN32_HANDLE_TO_FD
		516	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		517	#endif
		518	#ifndef EV_WIN32_CLOSE_FD
		519	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		520	#endif
		521
412	#ifdef _WIN32	522	#ifdef _WIN32
413	# include "ev_win32.c"	523	# include "ev_win32.c"
414	#endif	524	#endif
415		525
416	/*****************************************************************************/	526	/*****************************************************************************/
…		…
478	#define ev_malloc(size) ev_realloc (0, (size))	588	#define ev_malloc(size) ev_realloc (0, (size))
479	#define ev_free(ptr) ev_realloc ((ptr), 0)	589	#define ev_free(ptr) ev_realloc ((ptr), 0)
480		590
481	/*****************************************************************************/	591	/*****************************************************************************/
482		592
		593	/* set in reify when reification needed */
		594	#define EV_ANFD_REIFY 1
		595
		596	/* file descriptor info structure */
483	typedef struct	597	typedef struct
484	{	598	{
485	WL head;	599	WL head;
486	unsigned char events;	600	unsigned char events; /* the events watched for */
487	unsigned char reify;	601	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 */	602	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
489	unsigned char unused;	603	unsigned char unused;
490	#if EV_USE_EPOLL	604	#if EV_USE_EPOLL
491	unsigned int egen; /* generation counter to counter epoll bugs */	605	unsigned int egen; /* generation counter to counter epoll bugs */
492	#endif	606	#endif
493	#if EV_SELECT_IS_WINSOCKET	607	#if EV_SELECT_IS_WINSOCKET
494	SOCKET handle;	608	SOCKET handle;
495	#endif	609	#endif
496	} ANFD;	610	} ANFD;
497		611
		612	/* stores the pending event set for a given watcher */
498	typedef struct	613	typedef struct
499	{	614	{
500	W w;	615	W w;
501	int events;	616	int events; /* the pending event set for the given watcher */
502	} ANPENDING;	617	} ANPENDING;
503		618
504	#if EV_USE_INOTIFY	619	#if EV_USE_INOTIFY
505	/* hash table entry per inotify-id */	620	/* hash table entry per inotify-id */
506	typedef struct	621	typedef struct
…		…
509	} ANFS;	624	} ANFS;
510	#endif	625	#endif
511		626
512	/* Heap Entry */	627	/* Heap Entry */
513	#if EV_HEAP_CACHE_AT	628	#if EV_HEAP_CACHE_AT
		629	/* a heap element */
514	typedef struct {	630	typedef struct {
515	ev_tstamp at;	631	ev_tstamp at;
516	WT w;	632	WT w;
517	} ANHE;	633	} ANHE;
518		634
519	#define ANHE_w(he) (he).w /* access watcher, read-write */	635	#define ANHE_w(he) (he).w /* access watcher, read-write */
520	#define ANHE_at(he) (he).at /* access cached at, read-only */	636	#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 */	637	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
522	#else	638	#else
		639	/* a heap element */
523	typedef WT ANHE;	640	typedef WT ANHE;
524		641
525	#define ANHE_w(he) (he)	642	#define ANHE_w(he) (he)
526	#define ANHE_at(he) (he)->at	643	#define ANHE_at(he) (he)->at
527	#define ANHE_at_cache(he)	644	#define ANHE_at_cache(he)
…		…
551		668
552	static int ev_default_loop_ptr;	669	static int ev_default_loop_ptr;
553		670
554	#endif	671	#endif
555		672
		673	#if EV_MINIMAL < 2
		674	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		675	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		676	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		677	#else
		678	# define EV_RELEASE_CB (void)0
		679	# define EV_ACQUIRE_CB (void)0
		680	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		681	#endif
		682
		683	#define EVUNLOOP_RECURSE 0x80
		684
556	/*****************************************************************************/	685	/*****************************************************************************/
557		686
		687	#ifndef EV_HAVE_EV_TIME
558	ev_tstamp	688	ev_tstamp
559	ev_time (void)	689	ev_time (void)
560	{	690	{
561	#if EV_USE_REALTIME	691	#if EV_USE_REALTIME
562	if (expect_true (have_realtime))	692	if (expect_true (have_realtime))
…		…
569		699
570	struct timeval tv;	700	struct timeval tv;
571	gettimeofday (&tv, 0);	701	gettimeofday (&tv, 0);
572	return tv.tv_sec + tv.tv_usec * 1e-6;	702	return tv.tv_sec + tv.tv_usec * 1e-6;
573	}	703	}
		704	#endif
574		705
575	inline_size ev_tstamp	706	inline_size ev_tstamp
576	get_clock (void)	707	get_clock (void)
577	{	708	{
578	#if EV_USE_MONOTONIC	709	#if EV_USE_MONOTONIC
…		…
614		745
615	tv.tv_sec = (time_t)delay;	746	tv.tv_sec = (time_t)delay;
616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	747	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
617		748
618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	749	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
619	/* somehting nto guaranteed by newer posix versions, but guaranteed */	750	/* something not guaranteed by newer posix versions, but guaranteed */
620	/* by older ones */	751	/* by older ones */
621	select (0, 0, 0, 0, &tv);	752	select (0, 0, 0, 0, &tv);
622	#endif	753	#endif
623	}	754	}
624	}	755	}
625		756
626	/*****************************************************************************/	757	/*****************************************************************************/
627		758
628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	759	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
629		760
		761	/* find a suitable new size for the given array, */
		762	/* hopefully by rounding to a ncie-to-malloc size */
630	inline_size int	763	inline_size int
631	array_nextsize (int elem, int cur, int cnt)	764	array_nextsize (int elem, int cur, int cnt)
632	{	765	{
633	int ncur = cur + 1;	766	int ncur = cur + 1;
634		767
…		…
680	#define array_free(stem, idx) \	813	#define array_free(stem, idx) \
681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0	814	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
682		815
683	/*****************************************************************************/	816	/*****************************************************************************/
684		817
		818	/* dummy callback for pending events */
		819	static void noinline
		820	pendingcb (EV_P_ ev_prepare *w, int revents)
		821	{
		822	}
		823
685	void noinline	824	void noinline
686	ev_feed_event (EV_P_ void *w, int revents)	825	ev_feed_event (EV_P_ void *w, int revents)
687	{	826	{
688	W w_ = (W)w;	827	W w_ = (W)w;
689	int pri = ABSPRI (w_);	828	int pri = ABSPRI (w_);
…		…
724	}	863	}
725		864
726	/*****************************************************************************/	865	/*****************************************************************************/
727		866
728	inline_speed void	867	inline_speed void
729	fd_event (EV_P_ int fd, int revents)	868	fd_event_nc (EV_P_ int fd, int revents)
730	{	869	{
731	ANFD *anfd = anfds + fd;	870	ANFD *anfd = anfds + fd;
732	ev_io *w;	871	ev_io *w;
733		872
734	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	873	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
738	if (ev)	877	if (ev)
739	ev_feed_event (EV_A_ (W)w, ev);	878	ev_feed_event (EV_A_ (W)w, ev);
740	}	879	}
741	}	880	}
742		881
		882	/* do not submit kernel events for fds that have reify set */
		883	/* because that means they changed while we were polling for new events */
		884	inline_speed void
		885	fd_event (EV_P_ int fd, int revents)
		886	{
		887	ANFD *anfd = anfds + fd;
		888
		889	if (expect_true (!anfd->reify))
		890	fd_event_nc (EV_A_ fd, revents);
		891	}
		892
743	void	893	void
744	ev_feed_fd_event (EV_P_ int fd, int revents)	894	ev_feed_fd_event (EV_P_ int fd, int revents)
745	{	895	{
746	if (fd >= 0 && fd < anfdmax)	896	if (fd >= 0 && fd < anfdmax)
747	fd_event (EV_A_ fd, revents);	897	fd_event_nc (EV_A_ fd, revents);
748	}	898	}
749		899
		900	/* make sure the external fd watch events are in-sync */
		901	/* with the kernel/libev internal state */
750	inline_size void	902	inline_size void
751	fd_reify (EV_P)	903	fd_reify (EV_P)
752	{	904	{
753	int i;	905	int i;
754		906
…		…
765		917
766	#if EV_SELECT_IS_WINSOCKET	918	#if EV_SELECT_IS_WINSOCKET
767	if (events)	919	if (events)
768	{	920	{
769	unsigned long arg;	921	unsigned long arg;
770	#ifdef EV_FD_TO_WIN32_HANDLE
771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	922	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));	923	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
776	}	924	}
777	#endif	925	#endif
778		926
779	{	927	{
…		…
789	}	937	}
790		938
791	fdchangecnt = 0;	939	fdchangecnt = 0;
792	}	940	}
793		941
		942	/* something about the given fd changed */
794	inline_size void	943	inline_size void
795	fd_change (EV_P_ int fd, int flags)	944	fd_change (EV_P_ int fd, int flags)
796	{	945	{
797	unsigned char reify = anfds [fd].reify;	946	unsigned char reify = anfds [fd].reify;
798	anfds [fd].reify |= flags;	947	anfds [fd].reify |= flags;
…		…
803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	952	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
804	fdchanges [fdchangecnt - 1] = fd;	953	fdchanges [fdchangecnt - 1] = fd;
805	}	954	}
806	}	955	}
807		956
		957	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
808	inline_speed void	958	inline_speed void
809	fd_kill (EV_P_ int fd)	959	fd_kill (EV_P_ int fd)
810	{	960	{
811	ev_io *w;	961	ev_io *w;
812		962
…		…
815	ev_io_stop (EV_A_ w);	965	ev_io_stop (EV_A_ w);
816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	966	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
817	}	967	}
818	}	968	}
819		969
		970	/* check whether the given fd is atcually valid, for error recovery */
820	inline_size int	971	inline_size int
821	fd_valid (int fd)	972	fd_valid (int fd)
822	{	973	{
823	#ifdef _WIN32	974	#ifdef _WIN32
824	return _get_osfhandle (fd) != -1;	975	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
825	#else	976	#else
826	return fcntl (fd, F_GETFD) != -1;	977	return fcntl (fd, F_GETFD) != -1;
827	#endif	978	#endif
828	}	979	}
829		980
…		…
847		998
848	for (fd = anfdmax; fd--; )	999	for (fd = anfdmax; fd--; )
849	if (anfds [fd].events)	1000	if (anfds [fd].events)
850	{	1001	{
851	fd_kill (EV_A_ fd);	1002	fd_kill (EV_A_ fd);
852	return;	1003	break;
853	}	1004	}
854	}	1005	}
855		1006
856	/* usually called after fork if backend needs to re-arm all fds from scratch */	1007	/* usually called after fork if backend needs to re-arm all fds from scratch */
857	static void noinline	1008	static void noinline
…		…
862	for (fd = 0; fd < anfdmax; ++fd)	1013	for (fd = 0; fd < anfdmax; ++fd)
863	if (anfds [fd].events)	1014	if (anfds [fd].events)
864	{	1015	{
865	anfds [fd].events = 0;	1016	anfds [fd].events = 0;
866	anfds [fd].emask = 0;	1017	anfds [fd].emask = 0;
867	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1018	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
868	}	1019	}
869	}	1020	}
870		1021
871	/*****************************************************************************/	1022	/*****************************************************************************/
872		1023
…		…
947		1098
948	for (;;)	1099	for (;;)
949	{	1100	{
950	int c = k << 1;	1101	int c = k << 1;
951		1102
952	if (c > N + HEAP0 - 1)	1103	if (c >= N + HEAP0)
953	break;	1104	break;
954		1105
955	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1106	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
956	? 1 : 0;	1107	? 1 : 0;
957		1108
…		…
989		1140
990	heap [k] = he;	1141	heap [k] = he;
991	ev_active (ANHE_w (he)) = k;	1142	ev_active (ANHE_w (he)) = k;
992	}	1143	}
993		1144
		1145	/* move an element suitably so it is in a correct place */
994	inline_size void	1146	inline_size void
995	adjustheap (ANHE *heap, int N, int k)	1147	adjustheap (ANHE *heap, int N, int k)
996	{	1148	{
997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1149	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
998	upheap (heap, k);	1150	upheap (heap, k);
999	else	1151	else
1000	downheap (heap, N, k);	1152	downheap (heap, N, k);
1001	}	1153	}
1002		1154
…		…
1012	upheap (heap, i + HEAP0);	1164	upheap (heap, i + HEAP0);
1013	}	1165	}
1014		1166
1015	/*****************************************************************************/	1167	/*****************************************************************************/
1016		1168
		1169	/* associate signal watchers to a signal signal */
1017	typedef struct	1170	typedef struct
1018	{	1171	{
		1172	EV_ATOMIC_T pending;
		1173	#if EV_MULTIPLICITY
		1174	EV_P;
		1175	#endif
1019	WL head;	1176	WL head;
1020	EV_ATOMIC_T gotsig;
1021	} ANSIG;	1177	} ANSIG;
1022		1178
1023	static ANSIG *signals;	1179	static ANSIG signals [EV_NSIG - 1];
1024	static int signalmax;
1025
1026	static EV_ATOMIC_T gotsig;
1027		1180
1028	/*****************************************************************************/	1181	/*****************************************************************************/
1029		1182
		1183	/* used to prepare libev internal fd's */
		1184	/* this is not fork-safe */
1030	inline_speed void	1185	inline_speed void
1031	fd_intern (int fd)	1186	fd_intern (int fd)
1032	{	1187	{
1033	#ifdef _WIN32	1188	#ifdef _WIN32
1034	unsigned long arg = 1;	1189	unsigned long arg = 1;
1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1190	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
1036	#else	1191	#else
1037	fcntl (fd, F_SETFD, FD_CLOEXEC);	1192	fcntl (fd, F_SETFD, FD_CLOEXEC);
1038	fcntl (fd, F_SETFL, O_NONBLOCK);	1193	fcntl (fd, F_SETFL, O_NONBLOCK);
1039	#endif	1194	#endif
1040	}	1195	}
1041		1196
1042	static void noinline	1197	static void noinline
1043	evpipe_init (EV_P)	1198	evpipe_init (EV_P)
1044	{	1199	{
1045	if (!ev_is_active (&pipeev))	1200	if (!ev_is_active (&pipe_w))
1046	{	1201	{
1047	#if EV_USE_EVENTFD	1202	#if EV_USE_EVENTFD
		1203	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1204	if (evfd < 0 && errno == EINVAL)
1048	if ((evfd = eventfd (0, 0)) >= 0)	1205	evfd = eventfd (0, 0);
		1206
		1207	if (evfd >= 0)
1049	{	1208	{
1050	evpipe [0] = -1;	1209	evpipe [0] = -1;
1051	fd_intern (evfd);	1210	fd_intern (evfd); /* doing it twice doesn't hurt */
1052	ev_io_set (&pipeev, evfd, EV_READ);	1211	ev_io_set (&pipe_w, evfd, EV_READ);
1053	}	1212	}
1054	else	1213	else
1055	#endif	1214	#endif
1056	{	1215	{
1057	while (pipe (evpipe))	1216	while (pipe (evpipe))
1058	ev_syserr ("(libev) error creating signal/async pipe");	1217	ev_syserr ("(libev) error creating signal/async pipe");
1059		1218
1060	fd_intern (evpipe [0]);	1219	fd_intern (evpipe [0]);
1061	fd_intern (evpipe [1]);	1220	fd_intern (evpipe [1]);
1062	ev_io_set (&pipeev, evpipe [0], EV_READ);	1221	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1063	}	1222	}
1064		1223
1065	ev_io_start (EV_A_ &pipeev);	1224	ev_io_start (EV_A_ &pipe_w);
1066	ev_unref (EV_A); /* watcher should not keep loop alive */	1225	ev_unref (EV_A); /* watcher should not keep loop alive */
1067	}	1226	}
1068	}	1227	}
1069		1228
1070	inline_size void	1229	inline_size void
…		…
1088		1247
1089	errno = old_errno;	1248	errno = old_errno;
1090	}	1249	}
1091	}	1250	}
1092		1251
		1252	/* called whenever the libev signal pipe */
		1253	/* got some events (signal, async) */
1093	static void	1254	static void
1094	pipecb (EV_P_ ev_io *iow, int revents)	1255	pipecb (EV_P_ ev_io *iow, int revents)
1095	{	1256	{
		1257	int i;
		1258
1096	#if EV_USE_EVENTFD	1259	#if EV_USE_EVENTFD
1097	if (evfd >= 0)	1260	if (evfd >= 0)
1098	{	1261	{
1099	uint64_t counter;	1262	uint64_t counter;
1100	read (evfd, &counter, sizeof (uint64_t));	1263	read (evfd, &counter, sizeof (uint64_t));
…		…
1104	{	1267	{
1105	char dummy;	1268	char dummy;
1106	read (evpipe [0], &dummy, 1);	1269	read (evpipe [0], &dummy, 1);
1107	}	1270	}
1108		1271
1109	if (gotsig && ev_is_default_loop (EV_A))	1272	if (sig_pending)
1110	{	1273	{
1111	int signum;	1274	sig_pending = 0;
1112	gotsig = 0;
1113		1275
1114	for (signum = signalmax; signum--; )	1276	for (i = EV_NSIG - 1; i--; )
1115	if (signals [signum].gotsig)	1277	if (expect_false (signals [i].pending))
1116	ev_feed_signal_event (EV_A_ signum + 1);	1278	ev_feed_signal_event (EV_A_ i + 1);
1117	}	1279	}
1118		1280
1119	#if EV_ASYNC_ENABLE	1281	#if EV_ASYNC_ENABLE
1120	if (gotasync)	1282	if (async_pending)
1121	{	1283	{
1122	int i;	1284	async_pending = 0;
1123	gotasync = 0;
1124		1285
1125	for (i = asynccnt; i--; )	1286	for (i = asynccnt; i--; )
1126	if (asyncs [i]->sent)	1287	if (asyncs [i]->sent)
1127	{	1288	{
1128	asyncs [i]->sent = 0;	1289	asyncs [i]->sent = 0;
…		…
1136		1297
1137	static void	1298	static void
1138	ev_sighandler (int signum)	1299	ev_sighandler (int signum)
1139	{	1300	{
1140	#if EV_MULTIPLICITY	1301	#if EV_MULTIPLICITY
1141	struct ev_loop *loop = &default_loop_struct;	1302	EV_P = signals [signum - 1].loop;
1142	#endif	1303	#endif
1143		1304
1144	#if _WIN32	1305	#ifdef _WIN32
1145	signal (signum, ev_sighandler);	1306	signal (signum, ev_sighandler);
1146	#endif	1307	#endif
1147		1308
1148	signals [signum - 1].gotsig = 1;	1309	signals [signum - 1].pending = 1;
1149	evpipe_write (EV_A_ &gotsig);	1310	evpipe_write (EV_A_ &sig_pending);
1150	}	1311	}
1151		1312
1152	void noinline	1313	void noinline
1153	ev_feed_signal_event (EV_P_ int signum)	1314	ev_feed_signal_event (EV_P_ int signum)
1154	{	1315	{
1155	WL w;	1316	WL w;
1156		1317
		1318	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1319	return;
		1320
		1321	--signum;
		1322
1157	#if EV_MULTIPLICITY	1323	#if EV_MULTIPLICITY
1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1324	/* it is permissible to try to feed a signal to the wrong loop */
1159	#endif	1325	/* or, likely more useful, feeding a signal nobody is waiting for */
1160		1326
1161	--signum;	1327	if (expect_false (signals [signum].loop != EV_A))
1162
1163	if (signum < 0 || signum >= signalmax)
1164	return;	1328	return;
		1329	#endif
1165		1330
1166	signals [signum].gotsig = 0;	1331	signals [signum].pending = 0;
1167		1332
1168	for (w = signals [signum].head; w; w = w->next)	1333	for (w = signals [signum].head; w; w = w->next)
1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1334	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1170	}	1335	}
1171		1336
		1337	#if EV_USE_SIGNALFD
		1338	static void
		1339	sigfdcb (EV_P_ ev_io *iow, int revents)
		1340	{
		1341	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1342
		1343	for (;;)
		1344	{
		1345	ssize_t res = read (sigfd, si, sizeof (si));
		1346
		1347	/* not ISO-C, as res might be -1, but works with SuS */
		1348	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1349	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1350
		1351	if (res < (ssize_t)sizeof (si))
		1352	break;
		1353	}
		1354	}
		1355	#endif
		1356
1172	/*****************************************************************************/	1357	/*****************************************************************************/
1173		1358
1174	static WL childs [EV_PID_HASHSIZE];	1359	static WL childs [EV_PID_HASHSIZE];
1175		1360
1176	#ifndef _WIN32	1361	#ifndef _WIN32
…		…
1179		1364
1180	#ifndef WIFCONTINUED	1365	#ifndef WIFCONTINUED
1181	# define WIFCONTINUED(status) 0	1366	# define WIFCONTINUED(status) 0
1182	#endif	1367	#endif
1183		1368
		1369	/* handle a single child status event */
1184	inline_speed void	1370	inline_speed void
1185	child_reap (EV_P_ int chain, int pid, int status)	1371	child_reap (EV_P_ int chain, int pid, int status)
1186	{	1372	{
1187	ev_child *w;	1373	ev_child *w;
1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1374	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
…		…
1202		1388
1203	#ifndef WCONTINUED	1389	#ifndef WCONTINUED
1204	# define WCONTINUED 0	1390	# define WCONTINUED 0
1205	#endif	1391	#endif
1206		1392
		1393	/* called on sigchld etc., calls waitpid */
1207	static void	1394	static void
1208	childcb (EV_P_ ev_signal *sw, int revents)	1395	childcb (EV_P_ ev_signal *sw, int revents)
1209	{	1396	{
1210	int pid, status;	1397	int pid, status;
1211		1398
…		…
1318	ev_backend (EV_P)	1505	ev_backend (EV_P)
1319	{	1506	{
1320	return backend;	1507	return backend;
1321	}	1508	}
1322		1509
		1510	#if EV_MINIMAL < 2
1323	unsigned int	1511	unsigned int
1324	ev_loop_count (EV_P)	1512	ev_loop_count (EV_P)
1325	{	1513	{
1326	return loop_count;	1514	return loop_count;
1327	}	1515	}
1328		1516
		1517	unsigned int
		1518	ev_loop_depth (EV_P)
		1519	{
		1520	return loop_depth;
		1521	}
		1522
1329	void	1523	void
1330	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1524	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1331	{	1525	{
1332	io_blocktime = interval;	1526	io_blocktime = interval;
1333	}	1527	}
…		…
1336	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1530	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1337	{	1531	{
1338	timeout_blocktime = interval;	1532	timeout_blocktime = interval;
1339	}	1533	}
1340		1534
		1535	void
		1536	ev_set_userdata (EV_P_ void *data)
		1537	{
		1538	userdata = data;
		1539	}
		1540
		1541	void *
		1542	ev_userdata (EV_P)
		1543	{
		1544	return userdata;
		1545	}
		1546
		1547	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1548	{
		1549	invoke_cb = invoke_pending_cb;
		1550	}
		1551
		1552	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1553	{
		1554	release_cb = release;
		1555	acquire_cb = acquire;
		1556	}
		1557	#endif
		1558
		1559	/* initialise a loop structure, must be zero-initialised */
1341	static void noinline	1560	static void noinline
1342	loop_init (EV_P_ unsigned int flags)	1561	loop_init (EV_P_ unsigned int flags)
1343	{	1562	{
1344	if (!backend)	1563	if (!backend)
1345	{	1564	{
…		…
1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1580	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1362	have_monotonic = 1;	1581	have_monotonic = 1;
1363	}	1582	}
1364	#endif	1583	#endif
1365		1584
		1585	/* pid check not overridable via env */
		1586	#ifndef _WIN32
		1587	if (flags & EVFLAG_FORKCHECK)
		1588	curpid = getpid ();
		1589	#endif
		1590
		1591	if (!(flags & EVFLAG_NOENV)
		1592	&& !enable_secure ()
		1593	&& getenv ("LIBEV_FLAGS"))
		1594	flags = atoi (getenv ("LIBEV_FLAGS"));
		1595
1366	ev_rt_now = ev_time ();	1596	ev_rt_now = ev_time ();
1367	mn_now = get_clock ();	1597	mn_now = get_clock ();
1368	now_floor = mn_now;	1598	now_floor = mn_now;
1369	rtmn_diff = ev_rt_now - mn_now;	1599	rtmn_diff = ev_rt_now - mn_now;
		1600	#if EV_MINIMAL < 2
		1601	invoke_cb = ev_invoke_pending;
		1602	#endif
1370		1603
1371	io_blocktime = 0.;	1604	io_blocktime = 0.;
1372	timeout_blocktime = 0.;	1605	timeout_blocktime = 0.;
1373	backend = 0;	1606	backend = 0;
1374	backend_fd = -1;	1607	backend_fd = -1;
1375	gotasync = 0;	1608	sig_pending = 0;
		1609	#if EV_ASYNC_ENABLE
		1610	async_pending = 0;
		1611	#endif
1376	#if EV_USE_INOTIFY	1612	#if EV_USE_INOTIFY
1377	fs_fd = -2;	1613	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1378	#endif	1614	#endif
1379		1615	#if EV_USE_SIGNALFD
1380	/* pid check not overridable via env */	1616	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1381	#ifndef _WIN32
1382	if (flags & EVFLAG_FORKCHECK)
1383	curpid = getpid ();
1384	#endif	1617	#endif
1385
1386	if (!(flags & EVFLAG_NOENV)
1387	&& !enable_secure ()
1388	&& getenv ("LIBEV_FLAGS"))
1389	flags = atoi (getenv ("LIBEV_FLAGS"));
1390		1618
1391	if (!(flags & 0x0000ffffU))	1619	if (!(flags & 0x0000ffffU))
1392	flags |= ev_recommended_backends ();	1620	flags |= ev_recommended_backends ();
1393		1621
1394	#if EV_USE_PORT	1622	#if EV_USE_PORT
…		…
1405	#endif	1633	#endif
1406	#if EV_USE_SELECT	1634	#if EV_USE_SELECT
1407	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1635	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1408	#endif	1636	#endif
1409		1637
		1638	ev_prepare_init (&pending_w, pendingcb);
		1639
1410	ev_init (&pipeev, pipecb);	1640	ev_init (&pipe_w, pipecb);
1411	ev_set_priority (&pipeev, EV_MAXPRI);	1641	ev_set_priority (&pipe_w, EV_MAXPRI);
1412	}	1642	}
1413	}	1643	}
1414		1644
		1645	/* free up a loop structure */
1415	static void noinline	1646	static void noinline
1416	loop_destroy (EV_P)	1647	loop_destroy (EV_P)
1417	{	1648	{
1418	int i;	1649	int i;
1419		1650
1420	if (ev_is_active (&pipeev))	1651	if (ev_is_active (&pipe_w))
1421	{	1652	{
1422	ev_ref (EV_A); /* signal watcher */	1653	/*ev_ref (EV_A);*/
1423	ev_io_stop (EV_A_ &pipeev);	1654	/*ev_io_stop (EV_A_ &pipe_w);*/
1424		1655
1425	#if EV_USE_EVENTFD	1656	#if EV_USE_EVENTFD
1426	if (evfd >= 0)	1657	if (evfd >= 0)
1427	close (evfd);	1658	close (evfd);
1428	#endif	1659	#endif
1429		1660
1430	if (evpipe [0] >= 0)	1661	if (evpipe [0] >= 0)
1431	{	1662	{
1432	close (evpipe [0]);	1663	EV_WIN32_CLOSE_FD (evpipe [0]);
1433	close (evpipe [1]);	1664	EV_WIN32_CLOSE_FD (evpipe [1]);
1434	}	1665	}
1435	}	1666	}
		1667
		1668	#if EV_USE_SIGNALFD
		1669	if (ev_is_active (&sigfd_w))
		1670	close (sigfd);
		1671	#endif
1436		1672
1437	#if EV_USE_INOTIFY	1673	#if EV_USE_INOTIFY
1438	if (fs_fd >= 0)	1674	if (fs_fd >= 0)
1439	close (fs_fd);	1675	close (fs_fd);
1440	#endif	1676	#endif
…		…
1464	#if EV_IDLE_ENABLE	1700	#if EV_IDLE_ENABLE
1465	array_free (idle, [i]);	1701	array_free (idle, [i]);
1466	#endif	1702	#endif
1467	}	1703	}
1468		1704
1469	ev_free (anfds); anfdmax = 0;	1705	ev_free (anfds); anfds = 0; anfdmax = 0;
1470		1706
1471	/* have to use the microsoft-never-gets-it-right macro */	1707	/* have to use the microsoft-never-gets-it-right macro */
1472	array_free (rfeed, EMPTY);	1708	array_free (rfeed, EMPTY);
1473	array_free (fdchange, EMPTY);	1709	array_free (fdchange, EMPTY);
1474	array_free (timer, EMPTY);	1710	array_free (timer, EMPTY);
…		…
1505	#endif	1741	#endif
1506	#if EV_USE_INOTIFY	1742	#if EV_USE_INOTIFY
1507	infy_fork (EV_A);	1743	infy_fork (EV_A);
1508	#endif	1744	#endif
1509		1745
1510	if (ev_is_active (&pipeev))	1746	if (ev_is_active (&pipe_w))
1511	{	1747	{
1512	/* this "locks" the handlers against writing to the pipe */	1748	/* this "locks" the handlers against writing to the pipe */
1513	/* while we modify the fd vars */	1749	/* while we modify the fd vars */
1514	gotsig = 1;	1750	sig_pending = 1;
1515	#if EV_ASYNC_ENABLE	1751	#if EV_ASYNC_ENABLE
1516	gotasync = 1;	1752	async_pending = 1;
1517	#endif	1753	#endif
1518		1754
1519	ev_ref (EV_A);	1755	ev_ref (EV_A);
1520	ev_io_stop (EV_A_ &pipeev);	1756	ev_io_stop (EV_A_ &pipe_w);
1521		1757
1522	#if EV_USE_EVENTFD	1758	#if EV_USE_EVENTFD
1523	if (evfd >= 0)	1759	if (evfd >= 0)
1524	close (evfd);	1760	close (evfd);
1525	#endif	1761	#endif
1526		1762
1527	if (evpipe [0] >= 0)	1763	if (evpipe [0] >= 0)
1528	{	1764	{
1529	close (evpipe [0]);	1765	EV_WIN32_CLOSE_FD (evpipe [0]);
1530	close (evpipe [1]);	1766	EV_WIN32_CLOSE_FD (evpipe [1]);
1531	}	1767	}
1532		1768
1533	evpipe_init (EV_A);	1769	evpipe_init (EV_A);
1534	/* now iterate over everything, in case we missed something */	1770	/* now iterate over everything, in case we missed something */
1535	pipecb (EV_A_ &pipeev, EV_READ);	1771	pipecb (EV_A_ &pipe_w, EV_READ);
1536	}	1772	}
1537		1773
1538	postfork = 0;	1774	postfork = 0;
1539	}	1775	}
1540		1776
1541	#if EV_MULTIPLICITY	1777	#if EV_MULTIPLICITY
1542		1778
1543	struct ev_loop *	1779	struct ev_loop *
1544	ev_loop_new (unsigned int flags)	1780	ev_loop_new (unsigned int flags)
1545	{	1781	{
1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1782	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1547		1783
1548	memset (loop, 0, sizeof (struct ev_loop));	1784	memset (EV_A, 0, sizeof (struct ev_loop));
1549
1550	loop_init (EV_A_ flags);	1785	loop_init (EV_A_ flags);
1551		1786
1552	if (ev_backend (EV_A))	1787	if (ev_backend (EV_A))
1553	return loop;	1788	return EV_A;
1554		1789
1555	return 0;	1790	return 0;
1556	}	1791	}
1557		1792
1558	void	1793	void
…		…
1565	void	1800	void
1566	ev_loop_fork (EV_P)	1801	ev_loop_fork (EV_P)
1567	{	1802	{
1568	postfork = 1; /* must be in line with ev_default_fork */	1803	postfork = 1; /* must be in line with ev_default_fork */
1569	}	1804	}
		1805	#endif /* multiplicity */
1570		1806
1571	#if EV_VERIFY	1807	#if EV_VERIFY
1572	static void noinline	1808	static void noinline
1573	verify_watcher (EV_P_ W w)	1809	verify_watcher (EV_P_ W w)
1574	{	1810	{
…		…
1602	verify_watcher (EV_A_ ws [cnt]);	1838	verify_watcher (EV_A_ ws [cnt]);
1603	}	1839	}
1604	}	1840	}
1605	#endif	1841	#endif
1606		1842
		1843	#if EV_MINIMAL < 2
1607	void	1844	void
1608	ev_loop_verify (EV_P)	1845	ev_loop_verify (EV_P)
1609	{	1846	{
1610	#if EV_VERIFY	1847	#if EV_VERIFY
1611	int i;	1848	int i;
…		…
1660	assert (checkmax >= checkcnt);	1897	assert (checkmax >= checkcnt);
1661	array_verify (EV_A_ (W *)checks, checkcnt);	1898	array_verify (EV_A_ (W *)checks, checkcnt);
1662		1899
1663	# if 0	1900	# if 0
1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1901	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)	1902	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1666	# endif
1667	#endif	1903	# endif
		1904	#endif
1668	}	1905	}
1669		1906	#endif
1670	#endif /* multiplicity */
1671		1907
1672	#if EV_MULTIPLICITY	1908	#if EV_MULTIPLICITY
1673	struct ev_loop *	1909	struct ev_loop *
1674	ev_default_loop_init (unsigned int flags)	1910	ev_default_loop_init (unsigned int flags)
1675	#else	1911	#else
…		…
1678	#endif	1914	#endif
1679	{	1915	{
1680	if (!ev_default_loop_ptr)	1916	if (!ev_default_loop_ptr)
1681	{	1917	{
1682	#if EV_MULTIPLICITY	1918	#if EV_MULTIPLICITY
1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1919	EV_P = ev_default_loop_ptr = &default_loop_struct;
1684	#else	1920	#else
1685	ev_default_loop_ptr = 1;	1921	ev_default_loop_ptr = 1;
1686	#endif	1922	#endif
1687		1923
1688	loop_init (EV_A_ flags);	1924	loop_init (EV_A_ flags);
…		…
1705		1941
1706	void	1942	void
1707	ev_default_destroy (void)	1943	ev_default_destroy (void)
1708	{	1944	{
1709	#if EV_MULTIPLICITY	1945	#if EV_MULTIPLICITY
1710	struct ev_loop *loop = ev_default_loop_ptr;	1946	EV_P = ev_default_loop_ptr;
1711	#endif	1947	#endif
1712		1948
1713	ev_default_loop_ptr = 0;	1949	ev_default_loop_ptr = 0;
1714		1950
1715	#ifndef _WIN32	1951	#ifndef _WIN32
…		…
1722		1958
1723	void	1959	void
1724	ev_default_fork (void)	1960	ev_default_fork (void)
1725	{	1961	{
1726	#if EV_MULTIPLICITY	1962	#if EV_MULTIPLICITY
1727	struct ev_loop *loop = ev_default_loop_ptr;	1963	EV_P = ev_default_loop_ptr;
1728	#endif	1964	#endif
1729		1965
1730	postfork = 1; /* must be in line with ev_loop_fork */	1966	postfork = 1; /* must be in line with ev_loop_fork */
1731	}	1967	}
1732		1968
…		…
1736	ev_invoke (EV_P_ void *w, int revents)	1972	ev_invoke (EV_P_ void *w, int revents)
1737	{	1973	{
1738	EV_CB_INVOKE ((W)w, revents);	1974	EV_CB_INVOKE ((W)w, revents);
1739	}	1975	}
1740		1976
1741	inline_speed void	1977	unsigned int
1742	call_pending (EV_P)	1978	ev_pending_count (EV_P)
		1979	{
		1980	int pri;
		1981	unsigned int count = 0;
		1982
		1983	for (pri = NUMPRI; pri--; )
		1984	count += pendingcnt [pri];
		1985
		1986	return count;
		1987	}
		1988
		1989	void noinline
		1990	ev_invoke_pending (EV_P)
1743	{	1991	{
1744	int pri;	1992	int pri;
1745		1993
1746	for (pri = NUMPRI; pri--; )	1994	for (pri = NUMPRI; pri--; )
1747	while (pendingcnt [pri])	1995	while (pendingcnt [pri])
1748	{	1996	{
1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1997	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1750		1998
1751	if (expect_true (p->w))
1752	{
1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/	1999	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2000	/* ^ this is no longer true, as pending_w could be here */
1754		2001
1755	p->w->pending = 0;	2002	p->w->pending = 0;
1756	EV_CB_INVOKE (p->w, p->events);	2003	EV_CB_INVOKE (p->w, p->events);
1757	EV_FREQUENT_CHECK;	2004	EV_FREQUENT_CHECK;
1758	}
1759	}	2005	}
1760	}	2006	}
1761		2007
1762	#if EV_IDLE_ENABLE	2008	#if EV_IDLE_ENABLE
		2009	/* make idle watchers pending. this handles the "call-idle */
		2010	/* only when higher priorities are idle" logic */
1763	inline_size void	2011	inline_size void
1764	idle_reify (EV_P)	2012	idle_reify (EV_P)
1765	{	2013	{
1766	if (expect_false (idleall))	2014	if (expect_false (idleall))
1767	{	2015	{
…		…
1780	}	2028	}
1781	}	2029	}
1782	}	2030	}
1783	#endif	2031	#endif
1784		2032
		2033	/* make timers pending */
1785	inline_size void	2034	inline_size void
1786	timers_reify (EV_P)	2035	timers_reify (EV_P)
1787	{	2036	{
1788	EV_FREQUENT_CHECK;	2037	EV_FREQUENT_CHECK;
1789		2038
…		…
1818	feed_reverse_done (EV_A_ EV_TIMEOUT);	2067	feed_reverse_done (EV_A_ EV_TIMEOUT);
1819	}	2068	}
1820	}	2069	}
1821		2070
1822	#if EV_PERIODIC_ENABLE	2071	#if EV_PERIODIC_ENABLE
		2072	/* make periodics pending */
1823	inline_size void	2073	inline_size void
1824	periodics_reify (EV_P)	2074	periodics_reify (EV_P)
1825	{	2075	{
1826	EV_FREQUENT_CHECK;	2076	EV_FREQUENT_CHECK;
1827		2077
…		…
1874		2124
1875	feed_reverse_done (EV_A_ EV_PERIODIC);	2125	feed_reverse_done (EV_A_ EV_PERIODIC);
1876	}	2126	}
1877	}	2127	}
1878		2128
		2129	/* simply recalculate all periodics */
		2130	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1879	static void noinline	2131	static void noinline
1880	periodics_reschedule (EV_P)	2132	periodics_reschedule (EV_P)
1881	{	2133	{
1882	int i;	2134	int i;
1883		2135
…		…
1896		2148
1897	reheap (periodics, periodiccnt);	2149	reheap (periodics, periodiccnt);
1898	}	2150	}
1899	#endif	2151	#endif
1900		2152
		2153	/* adjust all timers by a given offset */
1901	static void noinline	2154	static void noinline
1902	timers_reschedule (EV_P_ ev_tstamp adjust)	2155	timers_reschedule (EV_P_ ev_tstamp adjust)
1903	{	2156	{
1904	int i;	2157	int i;
1905		2158
…		…
1909	ANHE_w (*he)->at += adjust;	2162	ANHE_w (*he)->at += adjust;
1910	ANHE_at_cache (*he);	2163	ANHE_at_cache (*he);
1911	}	2164	}
1912	}	2165	}
1913		2166
		2167	/* fetch new monotonic and realtime times from the kernel */
		2168	/* also detect if there was a timejump, and act accordingly */
1914	inline_speed void	2169	inline_speed void
1915	time_update (EV_P_ ev_tstamp max_block)	2170	time_update (EV_P_ ev_tstamp max_block)
1916	{	2171	{
1917	int i;
1918
1919	#if EV_USE_MONOTONIC	2172	#if EV_USE_MONOTONIC
1920	if (expect_true (have_monotonic))	2173	if (expect_true (have_monotonic))
1921	{	2174	{
		2175	int i;
1922	ev_tstamp odiff = rtmn_diff;	2176	ev_tstamp odiff = rtmn_diff;
1923		2177
1924	mn_now = get_clock ();	2178	mn_now = get_clock ();
1925		2179
1926	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2180	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1976		2230
1977	mn_now = ev_rt_now;	2231	mn_now = ev_rt_now;
1978	}	2232	}
1979	}	2233	}
1980		2234
1981	static int loop_done;
1982
1983	void	2235	void
1984	ev_loop (EV_P_ int flags)	2236	ev_loop (EV_P_ int flags)
1985	{	2237	{
		2238	#if EV_MINIMAL < 2
		2239	++loop_depth;
		2240	#endif
		2241
		2242	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2243
1986	loop_done = EVUNLOOP_CANCEL;	2244	loop_done = EVUNLOOP_CANCEL;
1987		2245
1988	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2246	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1989		2247
1990	do	2248	do
1991	{	2249	{
1992	#if EV_VERIFY >= 2	2250	#if EV_VERIFY >= 2
1993	ev_loop_verify (EV_A);	2251	ev_loop_verify (EV_A);
…		…
2006	/* we might have forked, so queue fork handlers */	2264	/* we might have forked, so queue fork handlers */
2007	if (expect_false (postfork))	2265	if (expect_false (postfork))
2008	if (forkcnt)	2266	if (forkcnt)
2009	{	2267	{
2010	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2268	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2011	call_pending (EV_A);	2269	EV_INVOKE_PENDING;
2012	}	2270	}
2013	#endif	2271	#endif
2014		2272
2015	/* queue prepare watchers (and execute them) */	2273	/* queue prepare watchers (and execute them) */
2016	if (expect_false (preparecnt))	2274	if (expect_false (preparecnt))
2017	{	2275	{
2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2276	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2019	call_pending (EV_A);	2277	EV_INVOKE_PENDING;
2020	}	2278	}
		2279
		2280	if (expect_false (loop_done))
		2281	break;
2021		2282
2022	/* we might have forked, so reify kernel state if necessary */	2283	/* we might have forked, so reify kernel state if necessary */
2023	if (expect_false (postfork))	2284	if (expect_false (postfork))
2024	loop_fork (EV_A);	2285	loop_fork (EV_A);
2025		2286
…		…
2031	ev_tstamp waittime = 0.;	2292	ev_tstamp waittime = 0.;
2032	ev_tstamp sleeptime = 0.;	2293	ev_tstamp sleeptime = 0.;
2033		2294
2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2295	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2035	{	2296	{
		2297	/* remember old timestamp for io_blocktime calculation */
		2298	ev_tstamp prev_mn_now = mn_now;
		2299
2036	/* update time to cancel out callback processing overhead */	2300	/* update time to cancel out callback processing overhead */
2037	time_update (EV_A_ 1e100);	2301	time_update (EV_A_ 1e100);
		2302
		2303	waittime = MAX_BLOCKTIME;
2038		2304
2039	if (timercnt)	2305	if (timercnt)
2040	{	2306	{
2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
2042	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
…		…
2048	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2314	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2049	if (waittime > to) waittime = to;	2315	if (waittime > to) waittime = to;
2050	}	2316	}
2051	#endif	2317	#endif
2052		2318
		2319	/* don't let timeouts decrease the waittime below timeout_blocktime */
2053	if (expect_false (waittime < timeout_blocktime))	2320	if (expect_false (waittime < timeout_blocktime))
2054	waittime = timeout_blocktime;	2321	waittime = timeout_blocktime;
2055		2322
2056	sleeptime = waittime - backend_fudge;	2323	/* extra check because io_blocktime is commonly 0 */
2057
2058	if (expect_true (sleeptime > io_blocktime))	2324	if (expect_false (io_blocktime))
2059	sleeptime = io_blocktime;
2060
2061	if (sleeptime)
2062	{	2325	{
		2326	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2327
		2328	if (sleeptime > waittime - backend_fudge)
		2329	sleeptime = waittime - backend_fudge;
		2330
		2331	if (expect_true (sleeptime > 0.))
		2332	{
2063	ev_sleep (sleeptime);	2333	ev_sleep (sleeptime);
2064	waittime -= sleeptime;	2334	waittime -= sleeptime;
		2335	}
2065	}	2336	}
2066	}	2337	}
2067		2338
		2339	#if EV_MINIMAL < 2
2068	++loop_count;	2340	++loop_count;
		2341	#endif
		2342	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2069	backend_poll (EV_A_ waittime);	2343	backend_poll (EV_A_ waittime);
		2344	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2070		2345
2071	/* update ev_rt_now, do magic */	2346	/* update ev_rt_now, do magic */
2072	time_update (EV_A_ waittime + sleeptime);	2347	time_update (EV_A_ waittime + sleeptime);
2073	}	2348	}
2074		2349
…		…
2085		2360
2086	/* queue check watchers, to be executed first */	2361	/* queue check watchers, to be executed first */
2087	if (expect_false (checkcnt))	2362	if (expect_false (checkcnt))
2088	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2363	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
2089		2364
2090	call_pending (EV_A);	2365	EV_INVOKE_PENDING;
2091	}	2366	}
2092	while (expect_true (	2367	while (expect_true (
2093	activecnt	2368	activecnt
2094	&& !loop_done	2369	&& !loop_done
2095	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2370	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2096	));	2371	));
2097		2372
2098	if (loop_done == EVUNLOOP_ONE)	2373	if (loop_done == EVUNLOOP_ONE)
2099	loop_done = EVUNLOOP_CANCEL;	2374	loop_done = EVUNLOOP_CANCEL;
		2375
		2376	#if EV_MINIMAL < 2
		2377	--loop_depth;
		2378	#endif
2100	}	2379	}
2101		2380
2102	void	2381	void
2103	ev_unloop (EV_P_ int how)	2382	ev_unloop (EV_P_ int how)
2104	{	2383	{
…		…
2135	ev_tstamp mn_prev = mn_now;	2414	ev_tstamp mn_prev = mn_now;
2136		2415
2137	ev_now_update (EV_A);	2416	ev_now_update (EV_A);
2138	timers_reschedule (EV_A_ mn_now - mn_prev);	2417	timers_reschedule (EV_A_ mn_now - mn_prev);
2139	#if EV_PERIODIC_ENABLE	2418	#if EV_PERIODIC_ENABLE
		2419	/* TODO: really do this? */
2140	periodics_reschedule (EV_A);	2420	periodics_reschedule (EV_A);
2141	#endif	2421	#endif
2142	}	2422	}
2143		2423
2144	/*****************************************************************************/	2424	/*****************************************************************************/
		2425	/* singly-linked list management, used when the expected list length is short */
2145		2426
2146	inline_size void	2427	inline_size void
2147	wlist_add (WL *head, WL elem)	2428	wlist_add (WL *head, WL elem)
2148	{	2429	{
2149	elem->next = *head;	2430	elem->next = *head;
…		…
2153	inline_size void	2434	inline_size void
2154	wlist_del (WL *head, WL elem)	2435	wlist_del (WL *head, WL elem)
2155	{	2436	{
2156	while (*head)	2437	while (*head)
2157	{	2438	{
2158	if (*head == elem)	2439	if (expect_true (*head == elem))
2159	{	2440	{
2160	*head = elem->next;	2441	*head = elem->next;
2161	return;	2442	break;
2162	}	2443	}
2163		2444
2164	head = &(*head)->next;	2445	head = &(*head)->next;
2165	}	2446	}
2166	}	2447	}
2167		2448
		2449	/* internal, faster, version of ev_clear_pending */
2168	inline_speed void	2450	inline_speed void
2169	clear_pending (EV_P_ W w)	2451	clear_pending (EV_P_ W w)
2170	{	2452	{
2171	if (w->pending)	2453	if (w->pending)
2172	{	2454	{
2173	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2455	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2174	w->pending = 0;	2456	w->pending = 0;
2175	}	2457	}
2176	}	2458	}
2177		2459
2178	int	2460	int
…		…
2182	int pending = w_->pending;	2464	int pending = w_->pending;
2183		2465
2184	if (expect_true (pending))	2466	if (expect_true (pending))
2185	{	2467	{
2186	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2468	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2469	p->w = (W)&pending_w;
2187	w_->pending = 0;	2470	w_->pending = 0;
2188	p->w = 0;
2189	return p->events;	2471	return p->events;
2190	}	2472	}
2191	else	2473	else
2192	return 0;	2474	return 0;
2193	}	2475	}
2194		2476
2195	inline_size void	2477	inline_size void
2196	pri_adjust (EV_P_ W w)	2478	pri_adjust (EV_P_ W w)
2197	{	2479	{
2198	int pri = w->priority;	2480	int pri = ev_priority (w);
2199	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2481	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2200	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2482	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2201	w->priority = pri;	2483	ev_set_priority (w, pri);
2202	}	2484	}
2203		2485
2204	inline_speed void	2486	inline_speed void
2205	ev_start (EV_P_ W w, int active)	2487	ev_start (EV_P_ W w, int active)
2206	{	2488	{
…		…
2233		2515
2234	ev_start (EV_A_ (W)w, 1);	2516	ev_start (EV_A_ (W)w, 1);
2235	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2517	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2236	wlist_add (&anfds[fd].head, (WL)w);	2518	wlist_add (&anfds[fd].head, (WL)w);
2237		2519
2238	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2520	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2239	w->events &= ~EV__IOFDSET;	2521	w->events &= ~EV__IOFDSET;
2240		2522
2241	EV_FREQUENT_CHECK;	2523	EV_FREQUENT_CHECK;
2242	}	2524	}
2243		2525
…		…
2337	}	2619	}
2338		2620
2339	EV_FREQUENT_CHECK;	2621	EV_FREQUENT_CHECK;
2340	}	2622	}
2341		2623
		2624	ev_tstamp
		2625	ev_timer_remaining (EV_P_ ev_timer *w)
		2626	{
		2627	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2628	}
		2629
2342	#if EV_PERIODIC_ENABLE	2630	#if EV_PERIODIC_ENABLE
2343	void noinline	2631	void noinline
2344	ev_periodic_start (EV_P_ ev_periodic *w)	2632	ev_periodic_start (EV_P_ ev_periodic *w)
2345	{	2633	{
2346	if (expect_false (ev_is_active (w)))	2634	if (expect_false (ev_is_active (w)))
…		…
2413	#endif	2701	#endif
2414		2702
2415	void noinline	2703	void noinline
2416	ev_signal_start (EV_P_ ev_signal *w)	2704	ev_signal_start (EV_P_ ev_signal *w)
2417	{	2705	{
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)))	2706	if (expect_false (ev_is_active (w)))
2422	return;	2707	return;
2423		2708
2424	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2709	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2425		2710
2426	evpipe_init (EV_A);	2711	#if EV_MULTIPLICITY
		2712	assert (("libev: a signal must not be attached to two different loops",
		2713	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2427		2714
2428	EV_FREQUENT_CHECK;	2715	signals [w->signum - 1].loop = EV_A;
		2716	#endif
2429		2717
		2718	EV_FREQUENT_CHECK;
		2719
		2720	#if EV_USE_SIGNALFD
		2721	if (sigfd == -2)
2430	{	2722	{
2431	#ifndef _WIN32	2723	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2432	sigset_t full, prev;	2724	if (sigfd < 0 && errno == EINVAL)
2433	sigfillset (&full);	2725	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2434	sigprocmask (SIG_SETMASK, &full, &prev);
2435	#endif
2436		2726
2437	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2727	if (sigfd >= 0)
		2728	{
		2729	fd_intern (sigfd); /* doing it twice will not hurt */
2438		2730
2439	#ifndef _WIN32	2731	sigemptyset (&sigfd_set);
2440	sigprocmask (SIG_SETMASK, &prev, 0);	2732
2441	#endif	2733	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2734	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2735	ev_io_start (EV_A_ &sigfd_w);
		2736	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2737	}
2442	}	2738	}
		2739
		2740	if (sigfd >= 0)
		2741	{
		2742	/* TODO: check .head */
		2743	sigaddset (&sigfd_set, w->signum);
		2744	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2745
		2746	signalfd (sigfd, &sigfd_set, 0);
		2747	}
		2748	#endif
2443		2749
2444	ev_start (EV_A_ (W)w, 1);	2750	ev_start (EV_A_ (W)w, 1);
2445	wlist_add (&signals [w->signum - 1].head, (WL)w);	2751	wlist_add (&signals [w->signum - 1].head, (WL)w);
2446		2752
2447	if (!((WL)w)->next)	2753	if (!((WL)w)->next)
		2754	# if EV_USE_SIGNALFD
		2755	if (sigfd < 0) /*TODO*/
		2756	# endif
2448	{	2757	{
2449	#if _WIN32	2758	# ifdef _WIN32
		2759	evpipe_init (EV_A);
		2760
2450	signal (w->signum, ev_sighandler);	2761	signal (w->signum, ev_sighandler);
2451	#else	2762	# else
2452	struct sigaction sa;	2763	struct sigaction sa;
		2764
		2765	evpipe_init (EV_A);
		2766
2453	sa.sa_handler = ev_sighandler;	2767	sa.sa_handler = ev_sighandler;
2454	sigfillset (&sa.sa_mask);	2768	sigfillset (&sa.sa_mask);
2455	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2769	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2456	sigaction (w->signum, &sa, 0);	2770	sigaction (w->signum, &sa, 0);
		2771
		2772	sigemptyset (&sa.sa_mask);
		2773	sigaddset (&sa.sa_mask, w->signum);
		2774	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2457	#endif	2775	#endif
2458	}	2776	}
2459		2777
2460	EV_FREQUENT_CHECK;	2778	EV_FREQUENT_CHECK;
2461	}	2779	}
2462		2780
2463	void noinline	2781	void noinline
…		…
2471		2789
2472	wlist_del (&signals [w->signum - 1].head, (WL)w);	2790	wlist_del (&signals [w->signum - 1].head, (WL)w);
2473	ev_stop (EV_A_ (W)w);	2791	ev_stop (EV_A_ (W)w);
2474		2792
2475	if (!signals [w->signum - 1].head)	2793	if (!signals [w->signum - 1].head)
		2794	{
		2795	#if EV_MULTIPLICITY
		2796	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2797	#endif
		2798	#if EV_USE_SIGNALFD
		2799	if (sigfd >= 0)
		2800	{
		2801	sigset_t ss;
		2802
		2803	sigemptyset (&ss);
		2804	sigaddset (&ss, w->signum);
		2805	sigdelset (&sigfd_set, w->signum);
		2806
		2807	signalfd (sigfd, &sigfd_set, 0);
		2808	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2809	}
		2810	else
		2811	#endif
2476	signal (w->signum, SIG_DFL);	2812	signal (w->signum, SIG_DFL);
		2813	}
2477		2814
2478	EV_FREQUENT_CHECK;	2815	EV_FREQUENT_CHECK;
2479	}	2816	}
2480		2817
2481	void	2818	void
…		…
2529	static void noinline	2866	static void noinline
2530	infy_add (EV_P_ ev_stat *w)	2867	infy_add (EV_P_ ev_stat *w)
2531	{	2868	{
2532	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2869	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2533		2870
2534	if (w->wd < 0)	2871	if (w->wd >= 0)
		2872	{
		2873	struct statfs sfs;
		2874
		2875	/* now local changes will be tracked by inotify, but remote changes won't */
		2876	/* unless the filesystem is known to be local, we therefore still poll */
		2877	/* also do poll on <2.6.25, but with normal frequency */
		2878
		2879	if (!fs_2625)
		2880	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2881	else if (!statfs (w->path, &sfs)
		2882	&& (sfs.f_type == 0x1373 /* devfs */
		2883	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2884	|| sfs.f_type == 0x3153464a /* jfs */
		2885	|| sfs.f_type == 0x52654973 /* reiser3 */
		2886	|| sfs.f_type == 0x01021994 /* tempfs */
		2887	|| sfs.f_type == 0x58465342 /* xfs */))
		2888	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2889	else
		2890	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2535	{	2891	}
		2892	else
		2893	{
		2894	/* can't use inotify, continue to stat */
2536	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2895	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2537	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2538		2896
2539	/* monitor some parent directory for speedup hints */	2897	/* if path is not there, monitor some parent directory for speedup hints */
2540	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2898	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2541	/* but an efficiency issue only */	2899	/* but an efficiency issue only */
2542	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2900	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2543	{	2901	{
2544	char path [4096];	2902	char path [4096];
…		…
2560	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2918	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2561	}	2919	}
2562	}	2920	}
2563		2921
2564	if (w->wd >= 0)	2922	if (w->wd >= 0)
2565	{
2566	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2923	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2567		2924
2568	/* now local changes will be tracked by inotify, but remote changes won't */	2925	/* now re-arm timer, if required */
2569	/* unless the filesystem it known to be local, we therefore still poll */	2926	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2570	/* also do poll on <2.6.25, but with normal frequency */
2571	struct statfs sfs;
2572
2573	if (fs_2625 && !statfs (w->path, &sfs))
2574	if (sfs.f_type == 0x1373 /* devfs */
2575	|| sfs.f_type == 0xEF53 /* ext2/3 */
2576	|| sfs.f_type == 0x3153464a /* jfs */
2577	|| sfs.f_type == 0x52654973 /* reiser3 */
2578	|| sfs.f_type == 0x01021994 /* tempfs */
2579	|| sfs.f_type == 0x58465342 /* xfs */)
2580	return;
2581
2582	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2583	ev_timer_again (EV_A_ &w->timer);	2927	ev_timer_again (EV_A_ &w->timer);
2584	}	2928	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2585	}	2929	}
2586		2930
2587	static void noinline	2931	static void noinline
2588	infy_del (EV_P_ ev_stat *w)	2932	infy_del (EV_P_ ev_stat *w)
2589	{	2933	{
…		…
2665	return;	3009	return;
2666		3010
2667	fs_2625 = 1;	3011	fs_2625 = 1;
2668	}	3012	}
2669		3013
		3014	inline_size int
		3015	infy_newfd (void)
		3016	{
		3017	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3018	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3019	if (fd >= 0)
		3020	return fd;
		3021	#endif
		3022	return inotify_init ();
		3023	}
		3024
2670	inline_size void	3025	inline_size void
2671	infy_init (EV_P)	3026	infy_init (EV_P)
2672	{	3027	{
2673	if (fs_fd != -2)	3028	if (fs_fd != -2)
2674	return;	3029	return;
2675		3030
2676	fs_fd = -1;	3031	fs_fd = -1;
2677		3032
2678	check_2625 (EV_A);	3033	check_2625 (EV_A);
2679		3034
2680	fs_fd = inotify_init ();	3035	fs_fd = infy_newfd ();
2681		3036
2682	if (fs_fd >= 0)	3037	if (fs_fd >= 0)
2683	{	3038	{
		3039	fd_intern (fs_fd);
2684	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3040	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2685	ev_set_priority (&fs_w, EV_MAXPRI);	3041	ev_set_priority (&fs_w, EV_MAXPRI);
2686	ev_io_start (EV_A_ &fs_w);	3042	ev_io_start (EV_A_ &fs_w);
		3043	ev_unref (EV_A);
2687	}	3044	}
2688	}	3045	}
2689		3046
2690	inline_size void	3047	inline_size void
2691	infy_fork (EV_P)	3048	infy_fork (EV_P)
…		…
2693	int slot;	3050	int slot;
2694		3051
2695	if (fs_fd < 0)	3052	if (fs_fd < 0)
2696	return;	3053	return;
2697		3054
		3055	ev_ref (EV_A);
		3056	ev_io_stop (EV_A_ &fs_w);
2698	close (fs_fd);	3057	close (fs_fd);
2699	fs_fd = inotify_init ();	3058	fs_fd = infy_newfd ();
		3059
		3060	if (fs_fd >= 0)
		3061	{
		3062	fd_intern (fs_fd);
		3063	ev_io_set (&fs_w, fs_fd, EV_READ);
		3064	ev_io_start (EV_A_ &fs_w);
		3065	ev_unref (EV_A);
		3066	}
2700		3067
2701	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3068	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2702	{	3069	{
2703	WL w_ = fs_hash [slot].head;	3070	WL w_ = fs_hash [slot].head;
2704	fs_hash [slot].head = 0;	3071	fs_hash [slot].head = 0;
…		…
2711	w->wd = -1;	3078	w->wd = -1;
2712		3079
2713	if (fs_fd >= 0)	3080	if (fs_fd >= 0)
2714	infy_add (EV_A_ w); /* re-add, no matter what */	3081	infy_add (EV_A_ w); /* re-add, no matter what */
2715	else	3082	else
		3083	{
		3084	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3085	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2716	ev_timer_again (EV_A_ &w->timer);	3086	ev_timer_again (EV_A_ &w->timer);
		3087	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3088	}
2717	}	3089	}
2718	}	3090	}
2719	}	3091	}
2720		3092
2721	#endif	3093	#endif
…		…
2738	static void noinline	3110	static void noinline
2739	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3111	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2740	{	3112	{
2741	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3113	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2742		3114
2743	/* we copy this here each the time so that */	3115	ev_statdata prev = w->attr;
2744	/* prev has the old value when the callback gets invoked */
2745	w->prev = w->attr;
2746	ev_stat_stat (EV_A_ w);	3116	ev_stat_stat (EV_A_ w);
2747		3117
2748	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3118	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2749	if (	3119	if (
2750	w->prev.st_dev != w->attr.st_dev	3120	prev.st_dev != w->attr.st_dev
2751	|| w->prev.st_ino != w->attr.st_ino	3121	|| prev.st_ino != w->attr.st_ino
2752	|| w->prev.st_mode != w->attr.st_mode	3122	|| prev.st_mode != w->attr.st_mode
2753	|| w->prev.st_nlink != w->attr.st_nlink	3123	|| prev.st_nlink != w->attr.st_nlink
2754	|| w->prev.st_uid != w->attr.st_uid	3124	|| prev.st_uid != w->attr.st_uid
2755	|| w->prev.st_gid != w->attr.st_gid	3125	|| prev.st_gid != w->attr.st_gid
2756	|| w->prev.st_rdev != w->attr.st_rdev	3126	|| prev.st_rdev != w->attr.st_rdev
2757	|| w->prev.st_size != w->attr.st_size	3127	|| prev.st_size != w->attr.st_size
2758	|| w->prev.st_atime != w->attr.st_atime	3128	|| prev.st_atime != w->attr.st_atime
2759	|| w->prev.st_mtime != w->attr.st_mtime	3129	|| prev.st_mtime != w->attr.st_mtime
2760	|| w->prev.st_ctime != w->attr.st_ctime	3130	|| prev.st_ctime != w->attr.st_ctime
2761	) {	3131	) {
		3132	/* we only update w->prev on actual differences */
		3133	/* in case we test more often than invoke the callback, */
		3134	/* to ensure that prev is always different to attr */
		3135	w->prev = prev;
		3136
2762	#if EV_USE_INOTIFY	3137	#if EV_USE_INOTIFY
2763	if (fs_fd >= 0)	3138	if (fs_fd >= 0)
2764	{	3139	{
2765	infy_del (EV_A_ w);	3140	infy_del (EV_A_ w);
2766	infy_add (EV_A_ w);	3141	infy_add (EV_A_ w);
…		…
2791		3166
2792	if (fs_fd >= 0)	3167	if (fs_fd >= 0)
2793	infy_add (EV_A_ w);	3168	infy_add (EV_A_ w);
2794	else	3169	else
2795	#endif	3170	#endif
		3171	{
2796	ev_timer_again (EV_A_ &w->timer);	3172	ev_timer_again (EV_A_ &w->timer);
		3173	ev_unref (EV_A);
		3174	}
2797		3175
2798	ev_start (EV_A_ (W)w, 1);	3176	ev_start (EV_A_ (W)w, 1);
2799		3177
2800	EV_FREQUENT_CHECK;	3178	EV_FREQUENT_CHECK;
2801	}	3179	}
…		…
2810	EV_FREQUENT_CHECK;	3188	EV_FREQUENT_CHECK;
2811		3189
2812	#if EV_USE_INOTIFY	3190	#if EV_USE_INOTIFY
2813	infy_del (EV_A_ w);	3191	infy_del (EV_A_ w);
2814	#endif	3192	#endif
		3193
		3194	if (ev_is_active (&w->timer))
		3195	{
		3196	ev_ref (EV_A);
2815	ev_timer_stop (EV_A_ &w->timer);	3197	ev_timer_stop (EV_A_ &w->timer);
		3198	}
2816		3199
2817	ev_stop (EV_A_ (W)w);	3200	ev_stop (EV_A_ (W)w);
2818		3201
2819	EV_FREQUENT_CHECK;	3202	EV_FREQUENT_CHECK;
2820	}	3203	}
…		…
2961	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3344	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2962	{	3345	{
2963	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3346	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2964		3347
2965	{	3348	{
2966	struct ev_loop *loop = w->other;	3349	EV_P = w->other;
2967		3350
2968	while (fdchangecnt)	3351	while (fdchangecnt)
2969	{	3352	{
2970	fd_reify (EV_A);	3353	fd_reify (EV_A);
2971	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3354	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
2979	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3362	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
2980		3363
2981	ev_embed_stop (EV_A_ w);	3364	ev_embed_stop (EV_A_ w);
2982		3365
2983	{	3366	{
2984	struct ev_loop *loop = w->other;	3367	EV_P = w->other;
2985		3368
2986	ev_loop_fork (EV_A);	3369	ev_loop_fork (EV_A);
2987	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3370	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2988	}	3371	}
2989		3372
…		…
3003	{	3386	{
3004	if (expect_false (ev_is_active (w)))	3387	if (expect_false (ev_is_active (w)))
3005	return;	3388	return;
3006		3389
3007	{	3390	{
3008	struct ev_loop *loop = w->other;	3391	EV_P = w->other;
3009	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3392	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);	3393	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3011	}	3394	}
3012		3395
3013	EV_FREQUENT_CHECK;	3396	EV_FREQUENT_CHECK;
…		…
3125		3508
3126	void	3509	void
3127	ev_async_send (EV_P_ ev_async *w)	3510	ev_async_send (EV_P_ ev_async *w)
3128	{	3511	{
3129	w->sent = 1;	3512	w->sent = 1;
3130	evpipe_write (EV_A_ &gotasync);	3513	evpipe_write (EV_A_ &async_pending);
3131	}	3514	}
3132	#endif	3515	#endif
3133		3516
3134	/*****************************************************************************/	3517	/*****************************************************************************/
3135		3518
…		…
3199	}	3582	}
3200	}	3583	}
3201		3584
3202	/*****************************************************************************/	3585	/*****************************************************************************/
3203		3586
3204	#if 0	3587	#if EV_WALK_ENABLE
3205	void	3588	void
3206	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))	3589	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
3207	{	3590	{
3208	int i, j;	3591	int i, j;
3209	ev_watcher_list *wl, *wn;	3592	ev_watcher_list *wl, *wn;
…		…
3225	#if EV_USE_INOTIFY	3608	#if EV_USE_INOTIFY
3226	if (ev_cb ((ev_io *)wl) == infy_cb)	3609	if (ev_cb ((ev_io *)wl) == infy_cb)
3227	;	3610	;
3228	else	3611	else
3229	#endif	3612	#endif
3230	if ((ev_io *)wl != &pipeev)	3613	if ((ev_io *)wl != &pipe_w)
3231	if (types & EV_IO)	3614	if (types & EV_IO)
3232	cb (EV_A_ EV_IO, wl);	3615	cb (EV_A_ EV_IO, wl);
3233		3616
3234	wl = wn;	3617	wl = wn;
3235	}	3618	}
…		…
3284	if (types & EV_CHECK)	3667	if (types & EV_CHECK)
3285	for (i = checkcnt; i--; )	3668	for (i = checkcnt; i--; )
3286	cb (EV_A_ EV_CHECK, checks [i]);	3669	cb (EV_A_ EV_CHECK, checks [i]);
3287		3670
3288	if (types & EV_SIGNAL)	3671	if (types & EV_SIGNAL)
3289	for (i = 0; i < signalmax; ++i)	3672	for (i = 0; i < EV_NSIG - 1; ++i)
3290	for (wl = signals [i].head; wl; )	3673	for (wl = signals [i].head; wl; )
3291	{	3674	{
3292	wn = wl->next;	3675	wn = wl->next;
3293	cb (EV_A_ EV_SIGNAL, wl);	3676	cb (EV_A_ EV_SIGNAL, wl);
3294	wl = wn;	3677	wl = wn;

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