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Comparing libev/ev.c (file contents):
Revision 1.224 by root, Wed Apr 9 22:07:50 2008 UTC vs.
Revision 1.317 by root, Sat Nov 14 00:15:21 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
47	# include EV_CONFIG_H	47	# include EV_CONFIG_H
48	# else	48	# else
49	# include "config.h"	49	# include "config.h"
50	# endif	50	# endif
51		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# elif !defined(EV_USE_CLOCK_SYSCALL)
		63	# define EV_USE_CLOCK_SYSCALL 0
		64	# endif
		65
52	# if HAVE_CLOCK_GETTIME	66	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	67	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	68	# define EV_USE_MONOTONIC 1
55	# endif	69	# endif
56	# ifndef EV_USE_REALTIME	70	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	71	# define EV_USE_REALTIME 0
58	# endif	72	# endif
59	# else	73	# else
60	# ifndef EV_USE_MONOTONIC	74	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	75	# define EV_USE_MONOTONIC 0
62	# endif	76	# endif
…		…
119	# else	133	# else
120	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
121	# endif	135	# endif
122	# endif	136	# endif
123		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
124	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
125	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
126	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD 1
127	# else	149	# else
128	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
129	# endif	151	# endif
130	# endif	152	# endif
131		153
132	#endif	154	#endif
133		155
134	#include <math.h>	156	#include <math.h>
135	#include <stdlib.h>	157	#include <stdlib.h>
136	#include <fcntl.h>	158	#include <fcntl.h>
…		…
154	#ifndef _WIN32	176	#ifndef _WIN32
155	# include <sys/time.h>	177	# include <sys/time.h>
156	# include <sys/wait.h>	178	# include <sys/wait.h>
157	# include <unistd.h>	179	# include <unistd.h>
158	#else	180	#else
		181	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	182	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	183	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	184	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	185	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	186	# endif
164	#endif	187	#endif
165		188
166	/* 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 */
167		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
		218	#ifndef EV_USE_CLOCK_SYSCALL
		219	# if __linux && __GLIBC__ >= 2
		220	# define EV_USE_CLOCK_SYSCALL 1
		221	# else
		222	# define EV_USE_CLOCK_SYSCALL 0
		223	# endif
		224	#endif
		225
168	#ifndef EV_USE_MONOTONIC	226	#ifndef EV_USE_MONOTONIC
		227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		228	# define EV_USE_MONOTONIC 1
		229	# else
169	# define EV_USE_MONOTONIC 0	230	# define EV_USE_MONOTONIC 0
		231	# endif
170	#endif	232	#endif
171		233
172	#ifndef EV_USE_REALTIME	234	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	236	#endif
175		237
176	#ifndef EV_USE_NANOSLEEP	238	#ifndef EV_USE_NANOSLEEP
		239	# if _POSIX_C_SOURCE >= 199309L
		240	# define EV_USE_NANOSLEEP 1
		241	# else
177	# define EV_USE_NANOSLEEP 0	242	# define EV_USE_NANOSLEEP 0
		243	# endif
178	#endif	244	#endif
179		245
180	#ifndef EV_USE_SELECT	246	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	247	# define EV_USE_SELECT 1
182	#endif	248	#endif
…		…
235	# else	301	# else
236	# define EV_USE_EVENTFD 0	302	# define EV_USE_EVENTFD 0
237	# endif	303	# endif
238	#endif	304	#endif
239		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
		314	#if 0 /* debugging */
		315	# define EV_VERIFY 3
		316	# define EV_USE_4HEAP 1
		317	# define EV_HEAP_CACHE_AT 1
		318	#endif
		319
		320	#ifndef EV_VERIFY
		321	# define EV_VERIFY !EV_MINIMAL
		322	#endif
		323
		324	#ifndef EV_USE_4HEAP
		325	# define EV_USE_4HEAP !EV_MINIMAL
		326	#endif
		327
		328	#ifndef EV_HEAP_CACHE_AT
		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
		344	#endif
		345
240	/* 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 */
241		347
242	#ifndef CLOCK_MONOTONIC	348	#ifndef CLOCK_MONOTONIC
243	# undef EV_USE_MONOTONIC	349	# undef EV_USE_MONOTONIC
244	# define EV_USE_MONOTONIC 0	350	# define EV_USE_MONOTONIC 0
…		…
259	# include <sys/select.h>	365	# include <sys/select.h>
260	# endif	366	# endif
261	#endif	367	#endif
262		368
263	#if EV_USE_INOTIFY	369	#if EV_USE_INOTIFY
		370	# include <sys/utsname.h>
		371	# include <sys/statfs.h>
264	# include <sys/inotify.h>	372	# include <sys/inotify.h>
		373	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		374	# ifndef IN_DONT_FOLLOW
		375	# undef EV_USE_INOTIFY
		376	# define EV_USE_INOTIFY 0
		377	# endif
265	#endif	378	#endif
266		379
267	#if EV_SELECT_IS_WINSOCKET	380	#if EV_SELECT_IS_WINSOCKET
268	# include <winsock.h>	381	# include <winsock.h>
269	#endif	382	#endif
270		383
271	#if EV_USE_EVENTFD	384	#if EV_USE_EVENTFD
272	/* 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 */
273	# 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
274	# ifdef __cplusplus	397	# ifdef __cplusplus
275	extern "C" {	398	extern "C" {
276	# endif	399	# endif
277	int eventfd (unsigned int initval, int flags);	400	int eventfd (unsigned int initval, int flags);
278	# ifdef __cplusplus	401	# ifdef __cplusplus
279	}	402	}
280	# endif	403	# endif
281	#endif	404	#endif
282		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
		434
283	/**/	435	/**/
		436
		437	#if EV_VERIFY >= 3
		438	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		439	#else
		440	# define EV_FREQUENT_CHECK do { } while (0)
		441	#endif
284		442
285	/*	443	/*
286	* This is used to avoid floating point rounding problems.	444	* This is used to avoid floating point rounding problems.
287	* It is added to ev_rt_now when scheduling periodics	445	* It is added to ev_rt_now when scheduling periodics
288	* to ensure progress, time-wise, even when rounding	446	* to ensure progress, time-wise, even when rounding
…		…
292	*/	450	*/
293	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	451	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
294		452
295	#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) */
296	#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) */
297	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
298		455
299	#if __GNUC__ >= 4	456	#if __GNUC__ >= 4
300	# define expect(expr,value) __builtin_expect ((expr),(value))	457	# define expect(expr,value) __builtin_expect ((expr),(value))
301	# define noinline __attribute__ ((noinline))	458	# define noinline __attribute__ ((noinline))
302	#else	459	#else
…		…
315	# define inline_speed static noinline	472	# define inline_speed static noinline
316	#else	473	#else
317	# define inline_speed static inline	474	# define inline_speed static inline
318	#endif	475	#endif
319		476
320	#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
321	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	482	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		483	#endif
322		484
323	#define EMPTY /* required for microsofts broken pseudo-c compiler */	485	#define EMPTY /* required for microsofts broken pseudo-c compiler */
324	#define EMPTY2(a,b) /* used to suppress some warnings */	486	#define EMPTY2(a,b) /* used to suppress some warnings */
325		487
326	typedef ev_watcher *W;	488	typedef ev_watcher *W;
327	typedef ev_watcher_list *WL;	489	typedef ev_watcher_list *WL;
328	typedef ev_watcher_time *WT;	490	typedef ev_watcher_time *WT;
329		491
330	#if EV_USE_MONOTONIC	492	#define ev_active(w) ((W)(w))->active
		493	#define ev_at(w) ((WT)(w))->at
		494
		495	#if EV_USE_REALTIME
331	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	496	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
332	/* giving it a reasonably high chance of working on typical architetcures */	497	/* giving it a reasonably high chance of working on typical architetcures */
		498	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		499	#endif
		500
		501	#if EV_USE_MONOTONIC
333	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? */
		503	#endif
		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)
334	#endif	513	#endif
335		514
336	#ifdef _WIN32	515	#ifdef _WIN32
337	# include "ev_win32.c"	516	# include "ev_win32.c"
338	#endif	517	#endif
…		…
346	{	525	{
347	syserr_cb = cb;	526	syserr_cb = cb;
348	}	527	}
349		528
350	static void noinline	529	static void noinline
351	syserr (const char *msg)	530	ev_syserr (const char *msg)
352	{	531	{
353	if (!msg)	532	if (!msg)
354	msg = "(libev) system error";	533	msg = "(libev) system error";
355		534
356	if (syserr_cb)	535	if (syserr_cb)
…		…
402	#define ev_malloc(size) ev_realloc (0, (size))	581	#define ev_malloc(size) ev_realloc (0, (size))
403	#define ev_free(ptr) ev_realloc ((ptr), 0)	582	#define ev_free(ptr) ev_realloc ((ptr), 0)
404		583
405	/*****************************************************************************/	584	/*****************************************************************************/
406		585
		586	/* set in reify when reification needed */
		587	#define EV_ANFD_REIFY 1
		588
		589	/* file descriptor info structure */
407	typedef struct	590	typedef struct
408	{	591	{
409	WL head;	592	WL head;
410	unsigned char events;	593	unsigned char events; /* the events watched for */
		594	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		595	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
411	unsigned char reify;	596	unsigned char unused;
		597	#if EV_USE_EPOLL
		598	unsigned int egen; /* generation counter to counter epoll bugs */
		599	#endif
412	#if EV_SELECT_IS_WINSOCKET	600	#if EV_SELECT_IS_WINSOCKET
413	SOCKET handle;	601	SOCKET handle;
414	#endif	602	#endif
415	} ANFD;	603	} ANFD;
416		604
		605	/* stores the pending event set for a given watcher */
417	typedef struct	606	typedef struct
418	{	607	{
419	W w;	608	W w;
420	int events;	609	int events; /* the pending event set for the given watcher */
421	} ANPENDING;	610	} ANPENDING;
422		611
423	#if EV_USE_INOTIFY	612	#if EV_USE_INOTIFY
		613	/* hash table entry per inotify-id */
424	typedef struct	614	typedef struct
425	{	615	{
426	WL head;	616	WL head;
427	} ANFS;	617	} ANFS;
		618	#endif
		619
		620	/* Heap Entry */
		621	#if EV_HEAP_CACHE_AT
		622	/* a heap element */
		623	typedef struct {
		624	ev_tstamp at;
		625	WT w;
		626	} ANHE;
		627
		628	#define ANHE_w(he) (he).w /* access watcher, read-write */
		629	#define ANHE_at(he) (he).at /* access cached at, read-only */
		630	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		631	#else
		632	/* a heap element */
		633	typedef WT ANHE;
		634
		635	#define ANHE_w(he) (he)
		636	#define ANHE_at(he) (he)->at
		637	#define ANHE_at_cache(he)
428	#endif	638	#endif
429		639
430	#if EV_MULTIPLICITY	640	#if EV_MULTIPLICITY
431		641
432	struct ev_loop	642	struct ev_loop
…		…
451		661
452	static int ev_default_loop_ptr;	662	static int ev_default_loop_ptr;
453		663
454	#endif	664	#endif
455		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
456	/*****************************************************************************/	678	/*****************************************************************************/
457		679
		680	#ifndef EV_HAVE_EV_TIME
458	ev_tstamp	681	ev_tstamp
459	ev_time (void)	682	ev_time (void)
460	{	683	{
461	#if EV_USE_REALTIME	684	#if EV_USE_REALTIME
		685	if (expect_true (have_realtime))
		686	{
462	struct timespec ts;	687	struct timespec ts;
463	clock_gettime (CLOCK_REALTIME, &ts);	688	clock_gettime (CLOCK_REALTIME, &ts);
464	return ts.tv_sec + ts.tv_nsec * 1e-9;	689	return ts.tv_sec + ts.tv_nsec * 1e-9;
465	#else	690	}
		691	#endif
		692
466	struct timeval tv;	693	struct timeval tv;
467	gettimeofday (&tv, 0);	694	gettimeofday (&tv, 0);
468	return tv.tv_sec + tv.tv_usec * 1e-6;	695	return tv.tv_sec + tv.tv_usec * 1e-6;
469	#endif
470	}	696	}
		697	#endif
471		698
472	ev_tstamp inline_size	699	inline_size ev_tstamp
473	get_clock (void)	700	get_clock (void)
474	{	701	{
475	#if EV_USE_MONOTONIC	702	#if EV_USE_MONOTONIC
476	if (expect_true (have_monotonic))	703	if (expect_true (have_monotonic))
477	{	704	{
…		…
510	struct timeval tv;	737	struct timeval tv;
511		738
512	tv.tv_sec = (time_t)delay;	739	tv.tv_sec = (time_t)delay;
513	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	740	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
514		741
		742	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		743	/* something not guaranteed by newer posix versions, but guaranteed */
		744	/* by older ones */
515	select (0, 0, 0, 0, &tv);	745	select (0, 0, 0, 0, &tv);
516	#endif	746	#endif
517	}	747	}
518	}	748	}
519		749
520	/*****************************************************************************/	750	/*****************************************************************************/
521		751
522	int inline_size	752	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		753
		754	/* find a suitable new size for the given array, */
		755	/* hopefully by rounding to a ncie-to-malloc size */
		756	inline_size int
523	array_nextsize (int elem, int cur, int cnt)	757	array_nextsize (int elem, int cur, int cnt)
524	{	758	{
525	int ncur = cur + 1;	759	int ncur = cur + 1;
526		760
527	do	761	do
528	ncur <<= 1;	762	ncur <<= 1;
529	while (cnt > ncur);	763	while (cnt > ncur);
530		764
531	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	765	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
532	if (elem * ncur > 4096)	766	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
533	{	767	{
534	ncur *= elem;	768	ncur *= elem;
535	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	769	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
536	ncur = ncur - sizeof (void *) * 4;	770	ncur = ncur - sizeof (void *) * 4;
537	ncur /= elem;	771	ncur /= elem;
538	}	772	}
539		773
540	return ncur;	774	return ncur;
…		…
544	array_realloc (int elem, void *base, int *cur, int cnt)	778	array_realloc (int elem, void *base, int *cur, int cnt)
545	{	779	{
546	*cur = array_nextsize (elem, *cur, cnt);	780	*cur = array_nextsize (elem, *cur, cnt);
547	return ev_realloc (base, elem * *cur);	781	return ev_realloc (base, elem * *cur);
548	}	782	}
		783
		784	#define array_init_zero(base,count) \
		785	memset ((void *)(base), 0, sizeof (*(base)) * (count))
549		786
550	#define array_needsize(type,base,cur,cnt,init) \	787	#define array_needsize(type,base,cur,cnt,init) \
551	if (expect_false ((cnt) > (cur))) \	788	if (expect_false ((cnt) > (cur))) \
552	{ \	789	{ \
553	int ocur_ = (cur); \	790	int ocur_ = (cur); \
…		…
565	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	802	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
566	}	803	}
567	#endif	804	#endif
568		805
569	#define array_free(stem, idx) \	806	#define array_free(stem, idx) \
570	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	807	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
571		808
572	/*****************************************************************************/	809	/*****************************************************************************/
		810
		811	/* dummy callback for pending events */
		812	static void noinline
		813	pendingcb (EV_P_ ev_prepare *w, int revents)
		814	{
		815	}
573		816
574	void noinline	817	void noinline
575	ev_feed_event (EV_P_ void *w, int revents)	818	ev_feed_event (EV_P_ void *w, int revents)
576	{	819	{
577	W w_ = (W)w;	820	W w_ = (W)w;
…		…
586	pendings [pri][w_->pending - 1].w = w_;	829	pendings [pri][w_->pending - 1].w = w_;
587	pendings [pri][w_->pending - 1].events = revents;	830	pendings [pri][w_->pending - 1].events = revents;
588	}	831	}
589	}	832	}
590		833
591	void inline_speed	834	inline_speed void
		835	feed_reverse (EV_P_ W w)
		836	{
		837	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		838	rfeeds [rfeedcnt++] = w;
		839	}
		840
		841	inline_size void
		842	feed_reverse_done (EV_P_ int revents)
		843	{
		844	do
		845	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		846	while (rfeedcnt);
		847	}
		848
		849	inline_speed void
592	queue_events (EV_P_ W *events, int eventcnt, int type)	850	queue_events (EV_P_ W *events, int eventcnt, int type)
593	{	851	{
594	int i;	852	int i;
595		853
596	for (i = 0; i < eventcnt; ++i)	854	for (i = 0; i < eventcnt; ++i)
597	ev_feed_event (EV_A_ events [i], type);	855	ev_feed_event (EV_A_ events [i], type);
598	}	856	}
599		857
600	/*****************************************************************************/	858	/*****************************************************************************/
601		859
602	void inline_size	860	inline_speed void
603	anfds_init (ANFD *base, int count)
604	{
605	while (count--)
606	{
607	base->head = 0;
608	base->events = EV_NONE;
609	base->reify = 0;
610
611	++base;
612	}
613	}
614
615	void inline_speed
616	fd_event (EV_P_ int fd, int revents)	861	fd_event_nc (EV_P_ int fd, int revents)
617	{	862	{
618	ANFD *anfd = anfds + fd;	863	ANFD *anfd = anfds + fd;
619	ev_io *w;	864	ev_io *w;
620		865
621	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)
…		…
625	if (ev)	870	if (ev)
626	ev_feed_event (EV_A_ (W)w, ev);	871	ev_feed_event (EV_A_ (W)w, ev);
627	}	872	}
628	}	873	}
629		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
630	void	886	void
631	ev_feed_fd_event (EV_P_ int fd, int revents)	887	ev_feed_fd_event (EV_P_ int fd, int revents)
632	{	888	{
633	if (fd >= 0 && fd < anfdmax)	889	if (fd >= 0 && fd < anfdmax)
634	fd_event (EV_A_ fd, revents);	890	fd_event_nc (EV_A_ fd, revents);
635	}	891	}
636		892
637	void inline_size	893	/* make sure the external fd watch events are in-sync */
		894	/* with the kernel/libev internal state */
		895	inline_size void
638	fd_reify (EV_P)	896	fd_reify (EV_P)
639	{	897	{
640	int i;	898	int i;
641		899
642	for (i = 0; i < fdchangecnt; ++i)	900	for (i = 0; i < fdchangecnt; ++i)
…		…
651	events |= (unsigned char)w->events;	909	events |= (unsigned char)w->events;
652		910
653	#if EV_SELECT_IS_WINSOCKET	911	#if EV_SELECT_IS_WINSOCKET
654	if (events)	912	if (events)
655	{	913	{
656	unsigned long argp;	914	unsigned long arg;
657	#ifdef EV_FD_TO_WIN32_HANDLE
658	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	915	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
659	#else
660	anfd->handle = _get_osfhandle (fd);
661	#endif
662	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	916	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
663	}	917	}
664	#endif	918	#endif
665		919
666	{	920	{
667	unsigned char o_events = anfd->events;	921	unsigned char o_events = anfd->events;
668	unsigned char o_reify = anfd->reify;	922	unsigned char o_reify = anfd->reify;
669		923
670	anfd->reify = 0;	924	anfd->reify = 0;
671	anfd->events = events;	925	anfd->events = events;
672		926
673	if (o_events != events || o_reify & EV_IOFDSET)	927	if (o_events != events || o_reify & EV__IOFDSET)
674	backend_modify (EV_A_ fd, o_events, events);	928	backend_modify (EV_A_ fd, o_events, events);
675	}	929	}
676	}	930	}
677		931
678	fdchangecnt = 0;	932	fdchangecnt = 0;
679	}	933	}
680		934
681	void inline_size	935	/* something about the given fd changed */
		936	inline_size void
682	fd_change (EV_P_ int fd, int flags)	937	fd_change (EV_P_ int fd, int flags)
683	{	938	{
684	unsigned char reify = anfds [fd].reify;	939	unsigned char reify = anfds [fd].reify;
685	anfds [fd].reify |= flags;	940	anfds [fd].reify |= flags;
686		941
…		…
690	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	945	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
691	fdchanges [fdchangecnt - 1] = fd;	946	fdchanges [fdchangecnt - 1] = fd;
692	}	947	}
693	}	948	}
694		949
695	void inline_speed	950	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		951	inline_speed void
696	fd_kill (EV_P_ int fd)	952	fd_kill (EV_P_ int fd)
697	{	953	{
698	ev_io *w;	954	ev_io *w;
699		955
700	while ((w = (ev_io *)anfds [fd].head))	956	while ((w = (ev_io *)anfds [fd].head))
…		…
702	ev_io_stop (EV_A_ w);	958	ev_io_stop (EV_A_ w);
703	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);
704	}	960	}
705	}	961	}
706		962
707	int inline_size	963	/* check whether the given fd is atcually valid, for error recovery */
		964	inline_size int
708	fd_valid (int fd)	965	fd_valid (int fd)
709	{	966	{
710	#ifdef _WIN32	967	#ifdef _WIN32
711	return _get_osfhandle (fd) != -1;	968	return _get_osfhandle (fd) != -1;
712	#else	969	#else
…		…
720	{	977	{
721	int fd;	978	int fd;
722		979
723	for (fd = 0; fd < anfdmax; ++fd)	980	for (fd = 0; fd < anfdmax; ++fd)
724	if (anfds [fd].events)	981	if (anfds [fd].events)
725	if (!fd_valid (fd) == -1 && errno == EBADF)	982	if (!fd_valid (fd) && errno == EBADF)
726	fd_kill (EV_A_ fd);	983	fd_kill (EV_A_ fd);
727	}	984	}
728		985
729	/* called on ENOMEM in select/poll to kill some fds and retry */	986	/* called on ENOMEM in select/poll to kill some fds and retry */
730	static void noinline	987	static void noinline
…		…
734		991
735	for (fd = anfdmax; fd--; )	992	for (fd = anfdmax; fd--; )
736	if (anfds [fd].events)	993	if (anfds [fd].events)
737	{	994	{
738	fd_kill (EV_A_ fd);	995	fd_kill (EV_A_ fd);
739	return;	996	break;
740	}	997	}
741	}	998	}
742		999
743	/* 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 */
744	static void noinline	1001	static void noinline
…		…
748		1005
749	for (fd = 0; fd < anfdmax; ++fd)	1006	for (fd = 0; fd < anfdmax; ++fd)
750	if (anfds [fd].events)	1007	if (anfds [fd].events)
751	{	1008	{
752	anfds [fd].events = 0;	1009	anfds [fd].events = 0;
		1010	anfds [fd].emask = 0;
753	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1011	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
754	}	1012	}
755	}	1013	}
756		1014
757	/*****************************************************************************/	1015	/*****************************************************************************/
758		1016
759	void inline_speed	1017	/*
760	upheap (WT *heap, int k)	1018	* the heap functions want a real array index. array index 0 uis guaranteed to not
761	{	1019	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
762	WT w = heap [k];	1020	* the branching factor of the d-tree.
		1021	*/
763		1022
764	while (k)	1023	/*
765	{	1024	* at the moment we allow libev the luxury of two heaps,
766	int p = (k - 1) >> 1;	1025	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1026	* which is more cache-efficient.
		1027	* the difference is about 5% with 50000+ watchers.
		1028	*/
		1029	#if EV_USE_4HEAP
767		1030
768	if (heap [p]->at <= w->at)	1031	#define DHEAP 4
		1032	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1033	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1034	#define UPHEAP_DONE(p,k) ((p) == (k))
		1035
		1036	/* away from the root */
		1037	inline_speed void
		1038	downheap (ANHE *heap, int N, int k)
		1039	{
		1040	ANHE he = heap [k];
		1041	ANHE *E = heap + N + HEAP0;
		1042
		1043	for (;;)
		1044	{
		1045	ev_tstamp minat;
		1046	ANHE *minpos;
		1047	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1048
		1049	/* find minimum child */
		1050	if (expect_true (pos + DHEAP - 1 < E))
		1051	{
		1052	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1053	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1054	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1055	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1056	}
		1057	else if (pos < E)
		1058	{
		1059	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1060	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1061	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1062	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1063	}
		1064	else
769	break;	1065	break;
770		1066
		1067	if (ANHE_at (he) <= minat)
		1068	break;
		1069
		1070	heap [k] = *minpos;
		1071	ev_active (ANHE_w (*minpos)) = k;
		1072
		1073	k = minpos - heap;
		1074	}
		1075
		1076	heap [k] = he;
		1077	ev_active (ANHE_w (he)) = k;
		1078	}
		1079
		1080	#else /* 4HEAP */
		1081
		1082	#define HEAP0 1
		1083	#define HPARENT(k) ((k) >> 1)
		1084	#define UPHEAP_DONE(p,k) (!(p))
		1085
		1086	/* away from the root */
		1087	inline_speed void
		1088	downheap (ANHE *heap, int N, int k)
		1089	{
		1090	ANHE he = heap [k];
		1091
		1092	for (;;)
		1093	{
		1094	int c = k << 1;
		1095
		1096	if (c >= N + HEAP0)
		1097	break;
		1098
		1099	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1100	? 1 : 0;
		1101
		1102	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1103	break;
		1104
		1105	heap [k] = heap [c];
		1106	ev_active (ANHE_w (heap [k])) = k;
		1107
		1108	k = c;
		1109	}
		1110
		1111	heap [k] = he;
		1112	ev_active (ANHE_w (he)) = k;
		1113	}
		1114	#endif
		1115
		1116	/* towards the root */
		1117	inline_speed void
		1118	upheap (ANHE *heap, int k)
		1119	{
		1120	ANHE he = heap [k];
		1121
		1122	for (;;)
		1123	{
		1124	int p = HPARENT (k);
		1125
		1126	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1127	break;
		1128
771	heap [k] = heap [p];	1129	heap [k] = heap [p];
772	((W)heap [k])->active = k + 1;	1130	ev_active (ANHE_w (heap [k])) = k;
773	k = p;	1131	k = p;
774	}	1132	}
775		1133
776	heap [k] = w;	1134	heap [k] = he;
777	((W)heap [k])->active = k + 1;	1135	ev_active (ANHE_w (he)) = k;
778	}	1136	}
779		1137
780	void inline_speed	1138	/* move an element suitably so it is in a correct place */
781	downheap (WT *heap, int N, int k)	1139	inline_size void
782	{
783	WT w = heap [k];
784
785	for (;;)
786	{
787	int c = (k << 1) + 1;
788
789	if (c >= N)
790	break;
791
792	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
793	? 1 : 0;
794
795	if (w->at <= heap [c]->at)
796	break;
797
798	heap [k] = heap [c];
799	((W)heap [k])->active = k + 1;
800
801	k = c;
802	}
803
804	heap [k] = w;
805	((W)heap [k])->active = k + 1;
806	}
807
808	void inline_size
809	adjustheap (WT *heap, int N, int k)	1140	adjustheap (ANHE *heap, int N, int k)
810	{	1141	{
		1142	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
811	upheap (heap, k);	1143	upheap (heap, k);
		1144	else
812	downheap (heap, N, k);	1145	downheap (heap, N, k);
		1146	}
		1147
		1148	/* rebuild the heap: this function is used only once and executed rarely */
		1149	inline_size void
		1150	reheap (ANHE *heap, int N)
		1151	{
		1152	int i;
		1153
		1154	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1155	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1156	for (i = 0; i < N; ++i)
		1157	upheap (heap, i + HEAP0);
813	}	1158	}
814		1159
815	/*****************************************************************************/	1160	/*****************************************************************************/
816		1161
		1162	/* associate signal watchers to a signal signal */
817	typedef struct	1163	typedef struct
818	{	1164	{
		1165	EV_ATOMIC_T pending;
		1166	#if EV_MULTIPLICITY
		1167	EV_P;
		1168	#endif
819	WL head;	1169	WL head;
820	EV_ATOMIC_T gotsig;
821	} ANSIG;	1170	} ANSIG;
822		1171
823	static ANSIG *signals;	1172	static ANSIG signals [EV_NSIG - 1];
824	static int signalmax;
825
826	static EV_ATOMIC_T gotsig;
827
828	void inline_size
829	signals_init (ANSIG *base, int count)
830	{
831	while (count--)
832	{
833	base->head = 0;
834	base->gotsig = 0;
835
836	++base;
837	}
838	}
839		1173
840	/*****************************************************************************/	1174	/*****************************************************************************/
841		1175
842	void inline_speed	1176	/* used to prepare libev internal fd's */
		1177	/* this is not fork-safe */
		1178	inline_speed void
843	fd_intern (int fd)	1179	fd_intern (int fd)
844	{	1180	{
845	#ifdef _WIN32	1181	#ifdef _WIN32
846	int arg = 1;	1182	unsigned long arg = 1;
847	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1183	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
848	#else	1184	#else
849	fcntl (fd, F_SETFD, FD_CLOEXEC);	1185	fcntl (fd, F_SETFD, FD_CLOEXEC);
850	fcntl (fd, F_SETFL, O_NONBLOCK);	1186	fcntl (fd, F_SETFL, O_NONBLOCK);
851	#endif	1187	#endif
852	}	1188	}
853		1189
854	static void noinline	1190	static void noinline
855	evpipe_init (EV_P)	1191	evpipe_init (EV_P)
856	{	1192	{
857	if (!ev_is_active (&pipeev))	1193	if (!ev_is_active (&pipe_w))
858	{	1194	{
859	#if EV_USE_EVENTFD	1195	#if EV_USE_EVENTFD
		1196	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1197	if (evfd < 0 && errno == EINVAL)
860	if ((evfd = eventfd (0, 0)) >= 0)	1198	evfd = eventfd (0, 0);
		1199
		1200	if (evfd >= 0)
861	{	1201	{
862	evpipe [0] = -1;	1202	evpipe [0] = -1;
863	fd_intern (evfd);	1203	fd_intern (evfd); /* doing it twice doesn't hurt */
864	ev_io_set (&pipeev, evfd, EV_READ);	1204	ev_io_set (&pipe_w, evfd, EV_READ);
865	}	1205	}
866	else	1206	else
867	#endif	1207	#endif
868	{	1208	{
869	while (pipe (evpipe))	1209	while (pipe (evpipe))
870	syserr ("(libev) error creating signal/async pipe");	1210	ev_syserr ("(libev) error creating signal/async pipe");
871		1211
872	fd_intern (evpipe [0]);	1212	fd_intern (evpipe [0]);
873	fd_intern (evpipe [1]);	1213	fd_intern (evpipe [1]);
874	ev_io_set (&pipeev, evpipe [0], EV_READ);	1214	ev_io_set (&pipe_w, evpipe [0], EV_READ);
875	}	1215	}
876		1216
877	ev_io_start (EV_A_ &pipeev);	1217	ev_io_start (EV_A_ &pipe_w);
878	ev_unref (EV_A); /* watcher should not keep loop alive */	1218	ev_unref (EV_A); /* watcher should not keep loop alive */
879	}	1219	}
880	}	1220	}
881		1221
882	void inline_size	1222	inline_size void
883	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1223	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
884	{	1224	{
885	if (!*flag)	1225	if (!*flag)
886	{	1226	{
887	int old_errno = errno; /* save errno because write might clobber it */	1227	int old_errno = errno; /* save errno because write might clobber it */
…		…
900		1240
901	errno = old_errno;	1241	errno = old_errno;
902	}	1242	}
903	}	1243	}
904		1244
		1245	/* called whenever the libev signal pipe */
		1246	/* got some events (signal, async) */
905	static void	1247	static void
906	pipecb (EV_P_ ev_io *iow, int revents)	1248	pipecb (EV_P_ ev_io *iow, int revents)
907	{	1249	{
		1250	int i;
		1251
908	#if EV_USE_EVENTFD	1252	#if EV_USE_EVENTFD
909	if (evfd >= 0)	1253	if (evfd >= 0)
910	{	1254	{
911	uint64_t counter = 1;	1255	uint64_t counter;
912	read (evfd, &counter, sizeof (uint64_t));	1256	read (evfd, &counter, sizeof (uint64_t));
913	}	1257	}
914	else	1258	else
915	#endif	1259	#endif
916	{	1260	{
917	char dummy;	1261	char dummy;
918	read (evpipe [0], &dummy, 1);	1262	read (evpipe [0], &dummy, 1);
919	}	1263	}
920		1264
921	if (gotsig && ev_is_default_loop (EV_A))	1265	if (sig_pending)
922	{	1266	{
923	int signum;	1267	sig_pending = 0;
924	gotsig = 0;
925		1268
926	for (signum = signalmax; signum--; )	1269	for (i = EV_NSIG - 1; i--; )
927	if (signals [signum].gotsig)	1270	if (expect_false (signals [i].pending))
928	ev_feed_signal_event (EV_A_ signum + 1);	1271	ev_feed_signal_event (EV_A_ i + 1);
929	}	1272	}
930		1273
931	#if EV_ASYNC_ENABLE	1274	#if EV_ASYNC_ENABLE
932	if (gotasync)	1275	if (async_pending)
933	{	1276	{
934	int i;	1277	async_pending = 0;
935	gotasync = 0;
936		1278
937	for (i = asynccnt; i--; )	1279	for (i = asynccnt; i--; )
938	if (asyncs [i]->sent)	1280	if (asyncs [i]->sent)
939	{	1281	{
940	asyncs [i]->sent = 0;	1282	asyncs [i]->sent = 0;
…		…
948		1290
949	static void	1291	static void
950	ev_sighandler (int signum)	1292	ev_sighandler (int signum)
951	{	1293	{
952	#if EV_MULTIPLICITY	1294	#if EV_MULTIPLICITY
953	struct ev_loop *loop = &default_loop_struct;	1295	EV_P = signals [signum - 1].loop;
954	#endif	1296	#endif
955		1297
956	#if _WIN32	1298	#if _WIN32
957	signal (signum, ev_sighandler);	1299	signal (signum, ev_sighandler);
958	#endif	1300	#endif
959		1301
960	signals [signum - 1].gotsig = 1;	1302	signals [signum - 1].pending = 1;
961	evpipe_write (EV_A_ &gotsig);	1303	evpipe_write (EV_A_ &sig_pending);
962	}	1304	}
963		1305
964	void noinline	1306	void noinline
965	ev_feed_signal_event (EV_P_ int signum)	1307	ev_feed_signal_event (EV_P_ int signum)
966	{	1308	{
967	WL w;	1309	WL w;
968		1310
		1311	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1312	return;
		1313
		1314	--signum;
		1315
969	#if EV_MULTIPLICITY	1316	#if EV_MULTIPLICITY
970	assert (("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 */
971	#endif	1318	/* or, likely more useful, feeding a signal nobody is waiting for */
972		1319
973	--signum;	1320	if (expect_false (signals [signum].loop != EV_A))
974
975	if (signum < 0 || signum >= signalmax)
976	return;	1321	return;
		1322	#endif
977		1323
978	signals [signum].gotsig = 0;	1324	signals [signum].pending = 0;
979		1325
980	for (w = signals [signum].head; w; w = w->next)	1326	for (w = signals [signum].head; w; w = w->next)
981	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1327	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
982	}	1328	}
983		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
984	/*****************************************************************************/	1350	/*****************************************************************************/
985		1351
986	static WL childs [EV_PID_HASHSIZE];	1352	static WL childs [EV_PID_HASHSIZE];
987		1353
988	#ifndef _WIN32	1354	#ifndef _WIN32
…		…
991		1357
992	#ifndef WIFCONTINUED	1358	#ifndef WIFCONTINUED
993	# define WIFCONTINUED(status) 0	1359	# define WIFCONTINUED(status) 0
994	#endif	1360	#endif
995		1361
996	void inline_speed	1362	/* handle a single child status event */
		1363	inline_speed void
997	child_reap (EV_P_ int chain, int pid, int status)	1364	child_reap (EV_P_ int chain, int pid, int status)
998	{	1365	{
999	ev_child *w;	1366	ev_child *w;
1000	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1367	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1001		1368
…		…
1014		1381
1015	#ifndef WCONTINUED	1382	#ifndef WCONTINUED
1016	# define WCONTINUED 0	1383	# define WCONTINUED 0
1017	#endif	1384	#endif
1018		1385
		1386	/* called on sigchld etc., calls waitpid */
1019	static void	1387	static void
1020	childcb (EV_P_ ev_signal *sw, int revents)	1388	childcb (EV_P_ ev_signal *sw, int revents)
1021	{	1389	{
1022	int pid, status;	1390	int pid, status;
1023		1391
…		…
1104	/* kqueue is borked on everything but netbsd apparently */	1472	/* kqueue is borked on everything but netbsd apparently */
1105	/* it usually doesn't work correctly on anything but sockets and pipes */	1473	/* it usually doesn't work correctly on anything but sockets and pipes */
1106	flags &= ~EVBACKEND_KQUEUE;	1474	flags &= ~EVBACKEND_KQUEUE;
1107	#endif	1475	#endif
1108	#ifdef __APPLE__	1476	#ifdef __APPLE__
1109	// flags &= ~EVBACKEND_KQUEUE; for documentation	1477	/* only select works correctly on that "unix-certified" platform */
1110	flags &= ~EVBACKEND_POLL;	1478	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1479	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1111	#endif	1480	#endif
1112		1481
1113	return flags;	1482	return flags;
1114	}	1483	}
1115		1484
…		…
1129	ev_backend (EV_P)	1498	ev_backend (EV_P)
1130	{	1499	{
1131	return backend;	1500	return backend;
1132	}	1501	}
1133		1502
		1503	#if EV_MINIMAL < 2
1134	unsigned int	1504	unsigned int
1135	ev_loop_count (EV_P)	1505	ev_loop_count (EV_P)
1136	{	1506	{
1137	return loop_count;	1507	return loop_count;
1138	}	1508	}
1139		1509
		1510	unsigned int
		1511	ev_loop_depth (EV_P)
		1512	{
		1513	return loop_depth;
		1514	}
		1515
1140	void	1516	void
1141	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1517	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1142	{	1518	{
1143	io_blocktime = interval;	1519	io_blocktime = interval;
1144	}	1520	}
…		…
1147	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1523	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1148	{	1524	{
1149	timeout_blocktime = interval;	1525	timeout_blocktime = interval;
1150	}	1526	}
1151		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 */
1152	static void noinline	1553	static void noinline
1153	loop_init (EV_P_ unsigned int flags)	1554	loop_init (EV_P_ unsigned int flags)
1154	{	1555	{
1155	if (!backend)	1556	if (!backend)
1156	{	1557	{
		1558	#if EV_USE_REALTIME
		1559	if (!have_realtime)
		1560	{
		1561	struct timespec ts;
		1562
		1563	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1564	have_realtime = 1;
		1565	}
		1566	#endif
		1567
1157	#if EV_USE_MONOTONIC	1568	#if EV_USE_MONOTONIC
		1569	if (!have_monotonic)
1158	{	1570	{
1159	struct timespec ts;	1571	struct timespec ts;
		1572
1160	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1573	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1161	have_monotonic = 1;	1574	have_monotonic = 1;
1162	}	1575	}
1163	#endif	1576	#endif
		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"));
1164		1588
1165	ev_rt_now = ev_time ();	1589	ev_rt_now = ev_time ();
1166	mn_now = get_clock ();	1590	mn_now = get_clock ();
1167	now_floor = mn_now;	1591	now_floor = mn_now;
1168	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
1169		1596
1170	io_blocktime = 0.;	1597	io_blocktime = 0.;
1171	timeout_blocktime = 0.;	1598	timeout_blocktime = 0.;
1172	backend = 0;	1599	backend = 0;
1173	backend_fd = -1;	1600	backend_fd = -1;
1174	gotasync = 0;	1601	sig_pending = 0;
		1602	#if EV_ASYNC_ENABLE
		1603	async_pending = 0;
		1604	#endif
1175	#if EV_USE_INOTIFY	1605	#if EV_USE_INOTIFY
1176	fs_fd = -2;	1606	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1177	#endif	1607	#endif
1178		1608	#if EV_USE_SIGNALFD
1179	/* pid check not overridable via env */	1609	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;
1180	#ifndef _WIN32
1181	if (flags & EVFLAG_FORKCHECK)
1182	curpid = getpid ();
1183	#endif	1610	#endif
1184		1611
1185	if (!(flags & EVFLAG_NOENV)
1186	&& !enable_secure ()
1187	&& getenv ("LIBEV_FLAGS"))
1188	flags = atoi (getenv ("LIBEV_FLAGS"));
1189
1190	if (!(flags & 0x0000ffffUL))	1612	if (!(flags & 0x0000ffffU))
1191	flags |= ev_recommended_backends ();	1613	flags |= ev_recommended_backends ();
1192		1614
1193	#if EV_USE_PORT	1615	#if EV_USE_PORT
1194	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1616	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1195	#endif	1617	#endif
…		…
1204	#endif	1626	#endif
1205	#if EV_USE_SELECT	1627	#if EV_USE_SELECT
1206	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1628	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1207	#endif	1629	#endif
1208		1630
		1631	ev_prepare_init (&pending_w, pendingcb);
		1632
1209	ev_init (&pipeev, pipecb);	1633	ev_init (&pipe_w, pipecb);
1210	ev_set_priority (&pipeev, EV_MAXPRI);	1634	ev_set_priority (&pipe_w, EV_MAXPRI);
1211	}	1635	}
1212	}	1636	}
1213		1637
		1638	/* free up a loop structure */
1214	static void noinline	1639	static void noinline
1215	loop_destroy (EV_P)	1640	loop_destroy (EV_P)
1216	{	1641	{
1217	int i;	1642	int i;
1218		1643
1219	if (ev_is_active (&pipeev))	1644	if (ev_is_active (&pipe_w))
1220	{	1645	{
1221	ev_ref (EV_A); /* signal watcher */	1646	/*ev_ref (EV_A);*/
1222	ev_io_stop (EV_A_ &pipeev);	1647	/*ev_io_stop (EV_A_ &pipe_w);*/
1223		1648
1224	#if EV_USE_EVENTFD	1649	#if EV_USE_EVENTFD
1225	if (evfd >= 0)	1650	if (evfd >= 0)
1226	close (evfd);	1651	close (evfd);
1227	#endif	1652	#endif
1228		1653
1229	if (evpipe [0] >= 0)	1654	if (evpipe [0] >= 0)
1230	{	1655	{
1231	close (evpipe [0]);	1656	EV_WIN32_CLOSE_FD (evpipe [0]);
1232	close (evpipe [1]);	1657	EV_WIN32_CLOSE_FD (evpipe [1]);
1233	}	1658	}
1234	}	1659	}
		1660
		1661	#if EV_USE_SIGNALFD
		1662	if (ev_is_active (&sigfd_w))
		1663	close (sigfd);
		1664	#endif
1235		1665
1236	#if EV_USE_INOTIFY	1666	#if EV_USE_INOTIFY
1237	if (fs_fd >= 0)	1667	if (fs_fd >= 0)
1238	close (fs_fd);	1668	close (fs_fd);
1239	#endif	1669	#endif
…		…
1263	#if EV_IDLE_ENABLE	1693	#if EV_IDLE_ENABLE
1264	array_free (idle, [i]);	1694	array_free (idle, [i]);
1265	#endif	1695	#endif
1266	}	1696	}
1267		1697
1268	ev_free (anfds); anfdmax = 0;	1698	ev_free (anfds); anfds = 0; anfdmax = 0;
1269		1699
1270	/* have to use the microsoft-never-gets-it-right macro */	1700	/* have to use the microsoft-never-gets-it-right macro */
		1701	array_free (rfeed, EMPTY);
1271	array_free (fdchange, EMPTY);	1702	array_free (fdchange, EMPTY);
1272	array_free (timer, EMPTY);	1703	array_free (timer, EMPTY);
1273	#if EV_PERIODIC_ENABLE	1704	#if EV_PERIODIC_ENABLE
1274	array_free (periodic, EMPTY);	1705	array_free (periodic, EMPTY);
1275	#endif	1706	#endif
…		…
1283	#endif	1714	#endif
1284		1715
1285	backend = 0;	1716	backend = 0;
1286	}	1717	}
1287		1718
		1719	#if EV_USE_INOTIFY
1288	void inline_size infy_fork (EV_P);	1720	inline_size void infy_fork (EV_P);
		1721	#endif
1289		1722
1290	void inline_size	1723	inline_size void
1291	loop_fork (EV_P)	1724	loop_fork (EV_P)
1292	{	1725	{
1293	#if EV_USE_PORT	1726	#if EV_USE_PORT
1294	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1727	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1295	#endif	1728	#endif
…		…
1301	#endif	1734	#endif
1302	#if EV_USE_INOTIFY	1735	#if EV_USE_INOTIFY
1303	infy_fork (EV_A);	1736	infy_fork (EV_A);
1304	#endif	1737	#endif
1305		1738
1306	if (ev_is_active (&pipeev))	1739	if (ev_is_active (&pipe_w))
1307	{	1740	{
1308	/* this "locks" the handlers against writing to the pipe */	1741	/* this "locks" the handlers against writing to the pipe */
1309	/* while we modify the fd vars */	1742	/* while we modify the fd vars */
1310	gotsig = 1;	1743	sig_pending = 1;
1311	#if EV_ASYNC_ENABLE	1744	#if EV_ASYNC_ENABLE
1312	gotasync = 1;	1745	async_pending = 1;
1313	#endif	1746	#endif
1314		1747
1315	ev_ref (EV_A);	1748	ev_ref (EV_A);
1316	ev_io_stop (EV_A_ &pipeev);	1749	ev_io_stop (EV_A_ &pipe_w);
1317		1750
1318	#if EV_USE_EVENTFD	1751	#if EV_USE_EVENTFD
1319	if (evfd >= 0)	1752	if (evfd >= 0)
1320	close (evfd);	1753	close (evfd);
1321	#endif	1754	#endif
1322		1755
1323	if (evpipe [0] >= 0)	1756	if (evpipe [0] >= 0)
1324	{	1757	{
1325	close (evpipe [0]);	1758	EV_WIN32_CLOSE_FD (evpipe [0]);
1326	close (evpipe [1]);	1759	EV_WIN32_CLOSE_FD (evpipe [1]);
1327	}	1760	}
1328		1761
1329	evpipe_init (EV_A);	1762	evpipe_init (EV_A);
1330	/* now iterate over everything, in case we missed something */	1763	/* now iterate over everything, in case we missed something */
1331	pipecb (EV_A_ &pipeev, EV_READ);	1764	pipecb (EV_A_ &pipe_w, EV_READ);
1332	}	1765	}
1333		1766
1334	postfork = 0;	1767	postfork = 0;
1335	}	1768	}
1336		1769
1337	#if EV_MULTIPLICITY	1770	#if EV_MULTIPLICITY
		1771
1338	struct ev_loop *	1772	struct ev_loop *
1339	ev_loop_new (unsigned int flags)	1773	ev_loop_new (unsigned int flags)
1340	{	1774	{
1341	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1775	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1342		1776
1343	memset (loop, 0, sizeof (struct ev_loop));	1777	memset (EV_A, 0, sizeof (struct ev_loop));
1344
1345	loop_init (EV_A_ flags);	1778	loop_init (EV_A_ flags);
1346		1779
1347	if (ev_backend (EV_A))	1780	if (ev_backend (EV_A))
1348	return loop;	1781	return EV_A;
1349		1782
1350	return 0;	1783	return 0;
1351	}	1784	}
1352		1785
1353	void	1786	void
…		…
1360	void	1793	void
1361	ev_loop_fork (EV_P)	1794	ev_loop_fork (EV_P)
1362	{	1795	{
1363	postfork = 1; /* must be in line with ev_default_fork */	1796	postfork = 1; /* must be in line with ev_default_fork */
1364	}	1797	}
		1798	#endif /* multiplicity */
1365		1799
		1800	#if EV_VERIFY
		1801	static void noinline
		1802	verify_watcher (EV_P_ W w)
		1803	{
		1804	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1805
		1806	if (w->pending)
		1807	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1808	}
		1809
		1810	static void noinline
		1811	verify_heap (EV_P_ ANHE *heap, int N)
		1812	{
		1813	int i;
		1814
		1815	for (i = HEAP0; i < N + HEAP0; ++i)
		1816	{
		1817	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1818	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1819	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1820
		1821	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1822	}
		1823	}
		1824
		1825	static void noinline
		1826	array_verify (EV_P_ W *ws, int cnt)
		1827	{
		1828	while (cnt--)
		1829	{
		1830	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1831	verify_watcher (EV_A_ ws [cnt]);
		1832	}
		1833	}
		1834	#endif
		1835
		1836	#if EV_MINIMAL < 2
		1837	void
		1838	ev_loop_verify (EV_P)
		1839	{
		1840	#if EV_VERIFY
		1841	int i;
		1842	WL w;
		1843
		1844	assert (activecnt >= -1);
		1845
		1846	assert (fdchangemax >= fdchangecnt);
		1847	for (i = 0; i < fdchangecnt; ++i)
		1848	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1849
		1850	assert (anfdmax >= 0);
		1851	for (i = 0; i < anfdmax; ++i)
		1852	for (w = anfds [i].head; w; w = w->next)
		1853	{
		1854	verify_watcher (EV_A_ (W)w);
		1855	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1856	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1857	}
		1858
		1859	assert (timermax >= timercnt);
		1860	verify_heap (EV_A_ timers, timercnt);
		1861
		1862	#if EV_PERIODIC_ENABLE
		1863	assert (periodicmax >= periodiccnt);
		1864	verify_heap (EV_A_ periodics, periodiccnt);
		1865	#endif
		1866
		1867	for (i = NUMPRI; i--; )
		1868	{
		1869	assert (pendingmax [i] >= pendingcnt [i]);
		1870	#if EV_IDLE_ENABLE
		1871	assert (idleall >= 0);
		1872	assert (idlemax [i] >= idlecnt [i]);
		1873	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1874	#endif
		1875	}
		1876
		1877	#if EV_FORK_ENABLE
		1878	assert (forkmax >= forkcnt);
		1879	array_verify (EV_A_ (W *)forks, forkcnt);
		1880	#endif
		1881
		1882	#if EV_ASYNC_ENABLE
		1883	assert (asyncmax >= asynccnt);
		1884	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1885	#endif
		1886
		1887	assert (preparemax >= preparecnt);
		1888	array_verify (EV_A_ (W *)prepares, preparecnt);
		1889
		1890	assert (checkmax >= checkcnt);
		1891	array_verify (EV_A_ (W *)checks, checkcnt);
		1892
		1893	# if 0
		1894	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1895	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1896	# endif
		1897	#endif
		1898	}
1366	#endif	1899	#endif
1367		1900
1368	#if EV_MULTIPLICITY	1901	#if EV_MULTIPLICITY
1369	struct ev_loop *	1902	struct ev_loop *
1370	ev_default_loop_init (unsigned int flags)	1903	ev_default_loop_init (unsigned int flags)
…		…
1374	#endif	1907	#endif
1375	{	1908	{
1376	if (!ev_default_loop_ptr)	1909	if (!ev_default_loop_ptr)
1377	{	1910	{
1378	#if EV_MULTIPLICITY	1911	#if EV_MULTIPLICITY
1379	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1912	EV_P = ev_default_loop_ptr = &default_loop_struct;
1380	#else	1913	#else
1381	ev_default_loop_ptr = 1;	1914	ev_default_loop_ptr = 1;
1382	#endif	1915	#endif
1383		1916
1384	loop_init (EV_A_ flags);	1917	loop_init (EV_A_ flags);
…		…
1401		1934
1402	void	1935	void
1403	ev_default_destroy (void)	1936	ev_default_destroy (void)
1404	{	1937	{
1405	#if EV_MULTIPLICITY	1938	#if EV_MULTIPLICITY
1406	struct ev_loop *loop = ev_default_loop_ptr;	1939	EV_P = ev_default_loop_ptr;
1407	#endif	1940	#endif
		1941
		1942	ev_default_loop_ptr = 0;
1408		1943
1409	#ifndef _WIN32	1944	#ifndef _WIN32
1410	ev_ref (EV_A); /* child watcher */	1945	ev_ref (EV_A); /* child watcher */
1411	ev_signal_stop (EV_A_ &childev);	1946	ev_signal_stop (EV_A_ &childev);
1412	#endif	1947	#endif
…		…
1416		1951
1417	void	1952	void
1418	ev_default_fork (void)	1953	ev_default_fork (void)
1419	{	1954	{
1420	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1421	struct ev_loop *loop = ev_default_loop_ptr;	1956	EV_P = ev_default_loop_ptr;
1422	#endif	1957	#endif
1423		1958
1424	if (backend)
1425	postfork = 1; /* must be in line with ev_loop_fork */	1959	postfork = 1; /* must be in line with ev_loop_fork */
1426	}	1960	}
1427		1961
1428	/*****************************************************************************/	1962	/*****************************************************************************/
1429		1963
1430	void	1964	void
1431	ev_invoke (EV_P_ void *w, int revents)	1965	ev_invoke (EV_P_ void *w, int revents)
1432	{	1966	{
1433	EV_CB_INVOKE ((W)w, revents);	1967	EV_CB_INVOKE ((W)w, revents);
1434	}	1968	}
1435		1969
1436	void inline_speed	1970	unsigned int
1437	call_pending (EV_P)	1971	ev_pending_count (EV_P)
		1972	{
		1973	int pri;
		1974	unsigned int count = 0;
		1975
		1976	for (pri = NUMPRI; pri--; )
		1977	count += pendingcnt [pri];
		1978
		1979	return count;
		1980	}
		1981
		1982	void noinline
		1983	ev_invoke_pending (EV_P)
1438	{	1984	{
1439	int pri;	1985	int pri;
1440		1986
1441	for (pri = NUMPRI; pri--; )	1987	for (pri = NUMPRI; pri--; )
1442	while (pendingcnt [pri])	1988	while (pendingcnt [pri])
1443	{	1989	{
1444	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1990	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1445		1991
1446	if (expect_true (p->w))
1447	{
1448	/*assert (("non-pending watcher on pending list", p->w->pending));*/	1992	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1993	/* ^ this is no longer true, as pending_w could be here */
1449		1994
1450	p->w->pending = 0;	1995	p->w->pending = 0;
1451	EV_CB_INVOKE (p->w, p->events);	1996	EV_CB_INVOKE (p->w, p->events);
1452	}	1997	EV_FREQUENT_CHECK;
1453	}	1998	}
1454	}	1999	}
1455		2000
1456	void inline_size
1457	timers_reify (EV_P)
1458	{
1459	while (timercnt && ((WT)timers [0])->at <= mn_now)
1460	{
1461	ev_timer *w = (ev_timer *)timers [0];
1462
1463	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1464
1465	/* first reschedule or stop timer */
1466	if (w->repeat)
1467	{
1468	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1469
1470	((WT)w)->at += w->repeat;
1471	if (((WT)w)->at < mn_now)
1472	((WT)w)->at = mn_now;
1473
1474	downheap (timers, timercnt, 0);
1475	}
1476	else
1477	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1478
1479	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1480	}
1481	}
1482
1483	#if EV_PERIODIC_ENABLE
1484	void inline_size
1485	periodics_reify (EV_P)
1486	{
1487	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1488	{
1489	ev_periodic *w = (ev_periodic *)periodics [0];
1490
1491	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1492
1493	/* first reschedule or stop timer */
1494	if (w->reschedule_cb)
1495	{
1496	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1497	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1498	downheap (periodics, periodiccnt, 0);
1499	}
1500	else if (w->interval)
1501	{
1502	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1503	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1504	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1505	downheap (periodics, periodiccnt, 0);
1506	}
1507	else
1508	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1509
1510	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1511	}
1512	}
1513
1514	static void noinline
1515	periodics_reschedule (EV_P)
1516	{
1517	int i;
1518
1519	/* adjust periodics after time jump */
1520	for (i = 0; i < periodiccnt; ++i)
1521	{
1522	ev_periodic *w = (ev_periodic *)periodics [i];
1523
1524	if (w->reschedule_cb)
1525	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1526	else if (w->interval)
1527	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1528	}
1529
1530	/* now rebuild the heap */
1531	for (i = periodiccnt >> 1; i--; )
1532	downheap (periodics, periodiccnt, i);
1533	}
1534	#endif
1535
1536	#if EV_IDLE_ENABLE	2001	#if EV_IDLE_ENABLE
1537	void inline_size	2002	/* make idle watchers pending. this handles the "call-idle */
		2003	/* only when higher priorities are idle" logic */
		2004	inline_size void
1538	idle_reify (EV_P)	2005	idle_reify (EV_P)
1539	{	2006	{
1540	if (expect_false (idleall))	2007	if (expect_false (idleall))
1541	{	2008	{
1542	int pri;	2009	int pri;
…		…
1554	}	2021	}
1555	}	2022	}
1556	}	2023	}
1557	#endif	2024	#endif
1558		2025
1559	void inline_speed	2026	/* make timers pending */
		2027	inline_size void
		2028	timers_reify (EV_P)
		2029	{
		2030	EV_FREQUENT_CHECK;
		2031
		2032	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2033	{
		2034	do
		2035	{
		2036	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2037
		2038	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2039
		2040	/* first reschedule or stop timer */
		2041	if (w->repeat)
		2042	{
		2043	ev_at (w) += w->repeat;
		2044	if (ev_at (w) < mn_now)
		2045	ev_at (w) = mn_now;
		2046
		2047	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2048
		2049	ANHE_at_cache (timers [HEAP0]);
		2050	downheap (timers, timercnt, HEAP0);
		2051	}
		2052	else
		2053	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2054
		2055	EV_FREQUENT_CHECK;
		2056	feed_reverse (EV_A_ (W)w);
		2057	}
		2058	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2059
		2060	feed_reverse_done (EV_A_ EV_TIMEOUT);
		2061	}
		2062	}
		2063
		2064	#if EV_PERIODIC_ENABLE
		2065	/* make periodics pending */
		2066	inline_size void
		2067	periodics_reify (EV_P)
		2068	{
		2069	EV_FREQUENT_CHECK;
		2070
		2071	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2072	{
		2073	int feed_count = 0;
		2074
		2075	do
		2076	{
		2077	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2078
		2079	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2080
		2081	/* first reschedule or stop timer */
		2082	if (w->reschedule_cb)
		2083	{
		2084	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2085
		2086	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2087
		2088	ANHE_at_cache (periodics [HEAP0]);
		2089	downheap (periodics, periodiccnt, HEAP0);
		2090	}
		2091	else if (w->interval)
		2092	{
		2093	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2094	/* if next trigger time is not sufficiently in the future, put it there */
		2095	/* this might happen because of floating point inexactness */
		2096	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2097	{
		2098	ev_at (w) += w->interval;
		2099
		2100	/* if interval is unreasonably low we might still have a time in the past */
		2101	/* so correct this. this will make the periodic very inexact, but the user */
		2102	/* has effectively asked to get triggered more often than possible */
		2103	if (ev_at (w) < ev_rt_now)
		2104	ev_at (w) = ev_rt_now;
		2105	}
		2106
		2107	ANHE_at_cache (periodics [HEAP0]);
		2108	downheap (periodics, periodiccnt, HEAP0);
		2109	}
		2110	else
		2111	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2112
		2113	EV_FREQUENT_CHECK;
		2114	feed_reverse (EV_A_ (W)w);
		2115	}
		2116	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2117
		2118	feed_reverse_done (EV_A_ EV_PERIODIC);
		2119	}
		2120	}
		2121
		2122	/* simply recalculate all periodics */
		2123	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
		2124	static void noinline
		2125	periodics_reschedule (EV_P)
		2126	{
		2127	int i;
		2128
		2129	/* adjust periodics after time jump */
		2130	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2131	{
		2132	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2133
		2134	if (w->reschedule_cb)
		2135	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2136	else if (w->interval)
		2137	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2138
		2139	ANHE_at_cache (periodics [i]);
		2140	}
		2141
		2142	reheap (periodics, periodiccnt);
		2143	}
		2144	#endif
		2145
		2146	/* adjust all timers by a given offset */
		2147	static void noinline
		2148	timers_reschedule (EV_P_ ev_tstamp adjust)
		2149	{
		2150	int i;
		2151
		2152	for (i = 0; i < timercnt; ++i)
		2153	{
		2154	ANHE *he = timers + i + HEAP0;
		2155	ANHE_w (*he)->at += adjust;
		2156	ANHE_at_cache (*he);
		2157	}
		2158	}
		2159
		2160	/* fetch new monotonic and realtime times from the kernel */
		2161	/* also detetc if there was a timejump, and act accordingly */
		2162	inline_speed void
1560	time_update (EV_P_ ev_tstamp max_block)	2163	time_update (EV_P_ ev_tstamp max_block)
1561	{	2164	{
1562	int i;
1563
1564	#if EV_USE_MONOTONIC	2165	#if EV_USE_MONOTONIC
1565	if (expect_true (have_monotonic))	2166	if (expect_true (have_monotonic))
1566	{	2167	{
		2168	int i;
1567	ev_tstamp odiff = rtmn_diff;	2169	ev_tstamp odiff = rtmn_diff;
1568		2170
1569	mn_now = get_clock ();	2171	mn_now = get_clock ();
1570		2172
1571	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2173	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1589	*/	2191	*/
1590	for (i = 4; --i; )	2192	for (i = 4; --i; )
1591	{	2193	{
1592	rtmn_diff = ev_rt_now - mn_now;	2194	rtmn_diff = ev_rt_now - mn_now;
1593		2195
1594	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2196	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
1595	return; /* all is well */	2197	return; /* all is well */
1596		2198
1597	ev_rt_now = ev_time ();	2199	ev_rt_now = ev_time ();
1598	mn_now = get_clock ();	2200	mn_now = get_clock ();
1599	now_floor = mn_now;	2201	now_floor = mn_now;
1600	}	2202	}
1601		2203
		2204	/* no timer adjustment, as the monotonic clock doesn't jump */
		2205	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1602	# if EV_PERIODIC_ENABLE	2206	# if EV_PERIODIC_ENABLE
1603	periodics_reschedule (EV_A);	2207	periodics_reschedule (EV_A);
1604	# endif	2208	# endif
1605	/* no timer adjustment, as the monotonic clock doesn't jump */
1606	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1607	}	2209	}
1608	else	2210	else
1609	#endif	2211	#endif
1610	{	2212	{
1611	ev_rt_now = ev_time ();	2213	ev_rt_now = ev_time ();
1612		2214
1613	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2215	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1614	{	2216	{
		2217	/* adjust timers. this is easy, as the offset is the same for all of them */
		2218	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1615	#if EV_PERIODIC_ENABLE	2219	#if EV_PERIODIC_ENABLE
1616	periodics_reschedule (EV_A);	2220	periodics_reschedule (EV_A);
1617	#endif	2221	#endif
1618	/* adjust timers. this is easy, as the offset is the same for all of them */
1619	for (i = 0; i < timercnt; ++i)
1620	((WT)timers [i])->at += ev_rt_now - mn_now;
1621	}	2222	}
1622		2223
1623	mn_now = ev_rt_now;	2224	mn_now = ev_rt_now;
1624	}	2225	}
1625	}	2226	}
1626		2227
1627	void	2228	void
1628	ev_ref (EV_P)
1629	{
1630	++activecnt;
1631	}
1632
1633	void
1634	ev_unref (EV_P)
1635	{
1636	--activecnt;
1637	}
1638
1639	static int loop_done;
1640
1641	void
1642	ev_loop (EV_P_ int flags)	2229	ev_loop (EV_P_ int flags)
1643	{	2230	{
		2231	#if EV_MINIMAL < 2
		2232	++loop_depth;
		2233	#endif
		2234
		2235	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2236
1644	loop_done = EVUNLOOP_CANCEL;	2237	loop_done = EVUNLOOP_CANCEL;
1645		2238
1646	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2239	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1647		2240
1648	do	2241	do
1649	{	2242	{
		2243	#if EV_VERIFY >= 2
		2244	ev_loop_verify (EV_A);
		2245	#endif
		2246
1650	#ifndef _WIN32	2247	#ifndef _WIN32
1651	if (expect_false (curpid)) /* penalise the forking check even more */	2248	if (expect_false (curpid)) /* penalise the forking check even more */
1652	if (expect_false (getpid () != curpid))	2249	if (expect_false (getpid () != curpid))
1653	{	2250	{
1654	curpid = getpid ();	2251	curpid = getpid ();
…		…
1660	/* we might have forked, so queue fork handlers */	2257	/* we might have forked, so queue fork handlers */
1661	if (expect_false (postfork))	2258	if (expect_false (postfork))
1662	if (forkcnt)	2259	if (forkcnt)
1663	{	2260	{
1664	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2261	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1665	call_pending (EV_A);	2262	EV_INVOKE_PENDING;
1666	}	2263	}
1667	#endif	2264	#endif
1668		2265
1669	/* queue prepare watchers (and execute them) */	2266	/* queue prepare watchers (and execute them) */
1670	if (expect_false (preparecnt))	2267	if (expect_false (preparecnt))
1671	{	2268	{
1672	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1673	call_pending (EV_A);	2270	EV_INVOKE_PENDING;
1674	}	2271	}
1675		2272
1676	if (expect_false (!activecnt))	2273	if (expect_false (loop_done))
1677	break;	2274	break;
1678		2275
1679	/* we might have forked, so reify kernel state if necessary */	2276	/* we might have forked, so reify kernel state if necessary */
1680	if (expect_false (postfork))	2277	if (expect_false (postfork))
1681	loop_fork (EV_A);	2278	loop_fork (EV_A);
…		…
1688	ev_tstamp waittime = 0.;	2285	ev_tstamp waittime = 0.;
1689	ev_tstamp sleeptime = 0.;	2286	ev_tstamp sleeptime = 0.;
1690		2287
1691	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2288	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1692	{	2289	{
		2290	/* remember old timestamp for io_blocktime calculation */
		2291	ev_tstamp prev_mn_now = mn_now;
		2292
1693	/* update time to cancel out callback processing overhead */	2293	/* update time to cancel out callback processing overhead */
1694	time_update (EV_A_ 1e100);	2294	time_update (EV_A_ 1e100);
1695		2295
1696	waittime = MAX_BLOCKTIME;	2296	waittime = MAX_BLOCKTIME;
1697		2297
1698	if (timercnt)	2298	if (timercnt)
1699	{	2299	{
1700	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2300	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
1701	if (waittime > to) waittime = to;	2301	if (waittime > to) waittime = to;
1702	}	2302	}
1703		2303
1704	#if EV_PERIODIC_ENABLE	2304	#if EV_PERIODIC_ENABLE
1705	if (periodiccnt)	2305	if (periodiccnt)
1706	{	2306	{
1707	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2307	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1708	if (waittime > to) waittime = to;	2308	if (waittime > to) waittime = to;
1709	}	2309	}
1710	#endif	2310	#endif
1711		2311
		2312	/* don't let timeouts decrease the waittime below timeout_blocktime */
1712	if (expect_false (waittime < timeout_blocktime))	2313	if (expect_false (waittime < timeout_blocktime))
1713	waittime = timeout_blocktime;	2314	waittime = timeout_blocktime;
1714		2315
1715	sleeptime = waittime - backend_fudge;	2316	/* extra check because io_blocktime is commonly 0 */
1716
1717	if (expect_true (sleeptime > io_blocktime))	2317	if (expect_false (io_blocktime))
1718	sleeptime = io_blocktime;
1719
1720	if (sleeptime)
1721	{	2318	{
		2319	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2320
		2321	if (sleeptime > waittime - backend_fudge)
		2322	sleeptime = waittime - backend_fudge;
		2323
		2324	if (expect_true (sleeptime > 0.))
		2325	{
1722	ev_sleep (sleeptime);	2326	ev_sleep (sleeptime);
1723	waittime -= sleeptime;	2327	waittime -= sleeptime;
		2328	}
1724	}	2329	}
1725	}	2330	}
1726		2331
		2332	#if EV_MINIMAL < 2
1727	++loop_count;	2333	++loop_count;
		2334	#endif
		2335	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1728	backend_poll (EV_A_ waittime);	2336	backend_poll (EV_A_ waittime);
		2337	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1729		2338
1730	/* update ev_rt_now, do magic */	2339	/* update ev_rt_now, do magic */
1731	time_update (EV_A_ waittime + sleeptime);	2340	time_update (EV_A_ waittime + sleeptime);
1732	}	2341	}
1733		2342
…		…
1744		2353
1745	/* queue check watchers, to be executed first */	2354	/* queue check watchers, to be executed first */
1746	if (expect_false (checkcnt))	2355	if (expect_false (checkcnt))
1747	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2356	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1748		2357
1749	call_pending (EV_A);	2358	EV_INVOKE_PENDING;
1750	}	2359	}
1751	while (expect_true (	2360	while (expect_true (
1752	activecnt	2361	activecnt
1753	&& !loop_done	2362	&& !loop_done
1754	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2363	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1755	));	2364	));
1756		2365
1757	if (loop_done == EVUNLOOP_ONE)	2366	if (loop_done == EVUNLOOP_ONE)
1758	loop_done = EVUNLOOP_CANCEL;	2367	loop_done = EVUNLOOP_CANCEL;
		2368
		2369	#if EV_MINIMAL < 2
		2370	--loop_depth;
		2371	#endif
1759	}	2372	}
1760		2373
1761	void	2374	void
1762	ev_unloop (EV_P_ int how)	2375	ev_unloop (EV_P_ int how)
1763	{	2376	{
1764	loop_done = how;	2377	loop_done = how;
1765	}	2378	}
1766		2379
		2380	void
		2381	ev_ref (EV_P)
		2382	{
		2383	++activecnt;
		2384	}
		2385
		2386	void
		2387	ev_unref (EV_P)
		2388	{
		2389	--activecnt;
		2390	}
		2391
		2392	void
		2393	ev_now_update (EV_P)
		2394	{
		2395	time_update (EV_A_ 1e100);
		2396	}
		2397
		2398	void
		2399	ev_suspend (EV_P)
		2400	{
		2401	ev_now_update (EV_A);
		2402	}
		2403
		2404	void
		2405	ev_resume (EV_P)
		2406	{
		2407	ev_tstamp mn_prev = mn_now;
		2408
		2409	ev_now_update (EV_A);
		2410	timers_reschedule (EV_A_ mn_now - mn_prev);
		2411	#if EV_PERIODIC_ENABLE
		2412	/* TODO: really do this? */
		2413	periodics_reschedule (EV_A);
		2414	#endif
		2415	}
		2416
1767	/*****************************************************************************/	2417	/*****************************************************************************/
		2418	/* singly-linked list management, used when the expected list length is short */
1768		2419
1769	void inline_size	2420	inline_size void
1770	wlist_add (WL *head, WL elem)	2421	wlist_add (WL *head, WL elem)
1771	{	2422	{
1772	elem->next = *head;	2423	elem->next = *head;
1773	*head = elem;	2424	*head = elem;
1774	}	2425	}
1775		2426
1776	void inline_size	2427	inline_size void
1777	wlist_del (WL *head, WL elem)	2428	wlist_del (WL *head, WL elem)
1778	{	2429	{
1779	while (*head)	2430	while (*head)
1780	{	2431	{
1781	if (*head == elem)	2432	if (expect_true (*head == elem))
1782	{	2433	{
1783	*head = elem->next;	2434	*head = elem->next;
1784	return;	2435	break;
1785	}	2436	}
1786		2437
1787	head = &(*head)->next;	2438	head = &(*head)->next;
1788	}	2439	}
1789	}	2440	}
1790		2441
1791	void inline_speed	2442	/* internal, faster, version of ev_clear_pending */
		2443	inline_speed void
1792	clear_pending (EV_P_ W w)	2444	clear_pending (EV_P_ W w)
1793	{	2445	{
1794	if (w->pending)	2446	if (w->pending)
1795	{	2447	{
1796	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2448	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1797	w->pending = 0;	2449	w->pending = 0;
1798	}	2450	}
1799	}	2451	}
1800		2452
1801	int	2453	int
…		…
1805	int pending = w_->pending;	2457	int pending = w_->pending;
1806		2458
1807	if (expect_true (pending))	2459	if (expect_true (pending))
1808	{	2460	{
1809	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2461	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2462	p->w = (W)&pending_w;
1810	w_->pending = 0;	2463	w_->pending = 0;
1811	p->w = 0;
1812	return p->events;	2464	return p->events;
1813	}	2465	}
1814	else	2466	else
1815	return 0;	2467	return 0;
1816	}	2468	}
1817		2469
1818	void inline_size	2470	inline_size void
1819	pri_adjust (EV_P_ W w)	2471	pri_adjust (EV_P_ W w)
1820	{	2472	{
1821	int pri = w->priority;	2473	int pri = ev_priority (w);
1822	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2474	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1823	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2475	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1824	w->priority = pri;	2476	ev_set_priority (w, pri);
1825	}	2477	}
1826		2478
1827	void inline_speed	2479	inline_speed void
1828	ev_start (EV_P_ W w, int active)	2480	ev_start (EV_P_ W w, int active)
1829	{	2481	{
1830	pri_adjust (EV_A_ w);	2482	pri_adjust (EV_A_ w);
1831	w->active = active;	2483	w->active = active;
1832	ev_ref (EV_A);	2484	ev_ref (EV_A);
1833	}	2485	}
1834		2486
1835	void inline_size	2487	inline_size void
1836	ev_stop (EV_P_ W w)	2488	ev_stop (EV_P_ W w)
1837	{	2489	{
1838	ev_unref (EV_A);	2490	ev_unref (EV_A);
1839	w->active = 0;	2491	w->active = 0;
1840	}	2492	}
…		…
1847	int fd = w->fd;	2499	int fd = w->fd;
1848		2500
1849	if (expect_false (ev_is_active (w)))	2501	if (expect_false (ev_is_active (w)))
1850	return;	2502	return;
1851		2503
1852	assert (("ev_io_start called with negative fd", fd >= 0));	2504	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2505	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2506
		2507	EV_FREQUENT_CHECK;
1853		2508
1854	ev_start (EV_A_ (W)w, 1);	2509	ev_start (EV_A_ (W)w, 1);
1855	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2510	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1856	wlist_add (&anfds[fd].head, (WL)w);	2511	wlist_add (&anfds[fd].head, (WL)w);
1857		2512
1858	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2513	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1859	w->events &= ~EV_IOFDSET;	2514	w->events &= ~EV__IOFDSET;
		2515
		2516	EV_FREQUENT_CHECK;
1860	}	2517	}
1861		2518
1862	void noinline	2519	void noinline
1863	ev_io_stop (EV_P_ ev_io *w)	2520	ev_io_stop (EV_P_ ev_io *w)
1864	{	2521	{
1865	clear_pending (EV_A_ (W)w);	2522	clear_pending (EV_A_ (W)w);
1866	if (expect_false (!ev_is_active (w)))	2523	if (expect_false (!ev_is_active (w)))
1867	return;	2524	return;
1868		2525
1869	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2526	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2527
		2528	EV_FREQUENT_CHECK;
1870		2529
1871	wlist_del (&anfds[w->fd].head, (WL)w);	2530	wlist_del (&anfds[w->fd].head, (WL)w);
1872	ev_stop (EV_A_ (W)w);	2531	ev_stop (EV_A_ (W)w);
1873		2532
1874	fd_change (EV_A_ w->fd, 1);	2533	fd_change (EV_A_ w->fd, 1);
		2534
		2535	EV_FREQUENT_CHECK;
1875	}	2536	}
1876		2537
1877	void noinline	2538	void noinline
1878	ev_timer_start (EV_P_ ev_timer *w)	2539	ev_timer_start (EV_P_ ev_timer *w)
1879	{	2540	{
1880	if (expect_false (ev_is_active (w)))	2541	if (expect_false (ev_is_active (w)))
1881	return;	2542	return;
1882		2543
1883	((WT)w)->at += mn_now;	2544	ev_at (w) += mn_now;
1884		2545
1885	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2546	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1886		2547
		2548	EV_FREQUENT_CHECK;
		2549
		2550	++timercnt;
1887	ev_start (EV_A_ (W)w, ++timercnt);	2551	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1888	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2552	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1889	timers [timercnt - 1] = (WT)w;	2553	ANHE_w (timers [ev_active (w)]) = (WT)w;
1890	upheap (timers, timercnt - 1);	2554	ANHE_at_cache (timers [ev_active (w)]);
		2555	upheap (timers, ev_active (w));
1891		2556
		2557	EV_FREQUENT_CHECK;
		2558
1892	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2559	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1893	}	2560	}
1894		2561
1895	void noinline	2562	void noinline
1896	ev_timer_stop (EV_P_ ev_timer *w)	2563	ev_timer_stop (EV_P_ ev_timer *w)
1897	{	2564	{
1898	clear_pending (EV_A_ (W)w);	2565	clear_pending (EV_A_ (W)w);
1899	if (expect_false (!ev_is_active (w)))	2566	if (expect_false (!ev_is_active (w)))
1900	return;	2567	return;
1901		2568
1902	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2569	EV_FREQUENT_CHECK;
1903		2570
1904	{	2571	{
1905	int active = ((W)w)->active;	2572	int active = ev_active (w);
1906		2573
		2574	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2575
		2576	--timercnt;
		2577
1907	if (expect_true (--active < --timercnt))	2578	if (expect_true (active < timercnt + HEAP0))
1908	{	2579	{
1909	timers [active] = timers [timercnt];	2580	timers [active] = timers [timercnt + HEAP0];
1910	adjustheap (timers, timercnt, active);	2581	adjustheap (timers, timercnt, active);
1911	}	2582	}
1912	}	2583	}
1913		2584
1914	((WT)w)->at -= mn_now;	2585	EV_FREQUENT_CHECK;
		2586
		2587	ev_at (w) -= mn_now;
1915		2588
1916	ev_stop (EV_A_ (W)w);	2589	ev_stop (EV_A_ (W)w);
1917	}	2590	}
1918		2591
1919	void noinline	2592	void noinline
1920	ev_timer_again (EV_P_ ev_timer *w)	2593	ev_timer_again (EV_P_ ev_timer *w)
1921	{	2594	{
		2595	EV_FREQUENT_CHECK;
		2596
1922	if (ev_is_active (w))	2597	if (ev_is_active (w))
1923	{	2598	{
1924	if (w->repeat)	2599	if (w->repeat)
1925	{	2600	{
1926	((WT)w)->at = mn_now + w->repeat;	2601	ev_at (w) = mn_now + w->repeat;
		2602	ANHE_at_cache (timers [ev_active (w)]);
1927	adjustheap (timers, timercnt, ((W)w)->active - 1);	2603	adjustheap (timers, timercnt, ev_active (w));
1928	}	2604	}
1929	else	2605	else
1930	ev_timer_stop (EV_A_ w);	2606	ev_timer_stop (EV_A_ w);
1931	}	2607	}
1932	else if (w->repeat)	2608	else if (w->repeat)
1933	{	2609	{
1934	w->at = w->repeat;	2610	ev_at (w) = w->repeat;
1935	ev_timer_start (EV_A_ w);	2611	ev_timer_start (EV_A_ w);
1936	}	2612	}
		2613
		2614	EV_FREQUENT_CHECK;
		2615	}
		2616
		2617	ev_tstamp
		2618	ev_timer_remaining (EV_P_ ev_timer *w)
		2619	{
		2620	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1937	}	2621	}
1938		2622
1939	#if EV_PERIODIC_ENABLE	2623	#if EV_PERIODIC_ENABLE
1940	void noinline	2624	void noinline
1941	ev_periodic_start (EV_P_ ev_periodic *w)	2625	ev_periodic_start (EV_P_ ev_periodic *w)
1942	{	2626	{
1943	if (expect_false (ev_is_active (w)))	2627	if (expect_false (ev_is_active (w)))
1944	return;	2628	return;
1945		2629
1946	if (w->reschedule_cb)	2630	if (w->reschedule_cb)
1947	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2631	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1948	else if (w->interval)	2632	else if (w->interval)
1949	{	2633	{
1950	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2634	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1951	/* this formula differs from the one in periodic_reify because we do not always round up */	2635	/* this formula differs from the one in periodic_reify because we do not always round up */
1952	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2636	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1953	}	2637	}
1954	else	2638	else
1955	((WT)w)->at = w->offset;	2639	ev_at (w) = w->offset;
1956		2640
		2641	EV_FREQUENT_CHECK;
		2642
		2643	++periodiccnt;
1957	ev_start (EV_A_ (W)w, ++periodiccnt);	2644	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1958	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2645	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1959	periodics [periodiccnt - 1] = (WT)w;	2646	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1960	upheap (periodics, periodiccnt - 1);	2647	ANHE_at_cache (periodics [ev_active (w)]);
		2648	upheap (periodics, ev_active (w));
1961		2649
		2650	EV_FREQUENT_CHECK;
		2651
1962	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2652	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1963	}	2653	}
1964		2654
1965	void noinline	2655	void noinline
1966	ev_periodic_stop (EV_P_ ev_periodic *w)	2656	ev_periodic_stop (EV_P_ ev_periodic *w)
1967	{	2657	{
1968	clear_pending (EV_A_ (W)w);	2658	clear_pending (EV_A_ (W)w);
1969	if (expect_false (!ev_is_active (w)))	2659	if (expect_false (!ev_is_active (w)))
1970	return;	2660	return;
1971		2661
1972	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2662	EV_FREQUENT_CHECK;
1973		2663
1974	{	2664	{
1975	int active = ((W)w)->active;	2665	int active = ev_active (w);
1976		2666
		2667	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2668
		2669	--periodiccnt;
		2670
1977	if (expect_true (--active < --periodiccnt))	2671	if (expect_true (active < periodiccnt + HEAP0))
1978	{	2672	{
1979	periodics [active] = periodics [periodiccnt];	2673	periodics [active] = periodics [periodiccnt + HEAP0];
1980	adjustheap (periodics, periodiccnt, active);	2674	adjustheap (periodics, periodiccnt, active);
1981	}	2675	}
1982	}	2676	}
1983		2677
		2678	EV_FREQUENT_CHECK;
		2679
1984	ev_stop (EV_A_ (W)w);	2680	ev_stop (EV_A_ (W)w);
1985	}	2681	}
1986		2682
1987	void noinline	2683	void noinline
1988	ev_periodic_again (EV_P_ ev_periodic *w)	2684	ev_periodic_again (EV_P_ ev_periodic *w)
…		…
1998	#endif	2694	#endif
1999		2695
2000	void noinline	2696	void noinline
2001	ev_signal_start (EV_P_ ev_signal *w)	2697	ev_signal_start (EV_P_ ev_signal *w)
2002	{	2698	{
2003	#if EV_MULTIPLICITY
2004	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2005	#endif
2006	if (expect_false (ev_is_active (w)))	2699	if (expect_false (ev_is_active (w)))
2007	return;	2700	return;
2008		2701
2009	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2702	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2010		2703
2011	evpipe_init (EV_A);	2704	#if EV_MULTIPLICITY
		2705	assert (("libev: a signal must not be attached to two different loops",
		2706	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2012		2707
		2708	signals [w->signum - 1].loop = EV_A;
		2709	#endif
		2710
		2711	EV_FREQUENT_CHECK;
		2712
		2713	#if EV_USE_SIGNALFD
		2714	if (sigfd == -2)
2013	{	2715	{
2014	#ifndef _WIN32	2716	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2015	sigset_t full, prev;	2717	if (sigfd < 0 && errno == EINVAL)
2016	sigfillset (&full);	2718	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2017	sigprocmask (SIG_SETMASK, &full, &prev);
2018	#endif
2019		2719
2020	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2720	if (sigfd >= 0)
		2721	{
		2722	fd_intern (sigfd); /* doing it twice will not hurt */
2021		2723
2022	#ifndef _WIN32	2724	sigemptyset (&sigfd_set);
2023	sigprocmask (SIG_SETMASK, &prev, 0);	2725
2024	#endif	2726	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2727	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2728	ev_io_start (EV_A_ &sigfd_w);
		2729	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2730	}
2025	}	2731	}
		2732
		2733	if (sigfd >= 0)
		2734	{
		2735	/* TODO: check .head */
		2736	sigaddset (&sigfd_set, w->signum);
		2737	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2738
		2739	signalfd (sigfd, &sigfd_set, 0);
		2740	}
		2741	#endif
2026		2742
2027	ev_start (EV_A_ (W)w, 1);	2743	ev_start (EV_A_ (W)w, 1);
2028	wlist_add (&signals [w->signum - 1].head, (WL)w);	2744	wlist_add (&signals [w->signum - 1].head, (WL)w);
2029		2745
2030	if (!((WL)w)->next)	2746	if (!((WL)w)->next)
		2747	# if EV_USE_SIGNALFD
		2748	if (sigfd < 0) /*TODO*/
		2749	# endif
2031	{	2750	{
2032	#if _WIN32	2751	# if _WIN32
		2752	evpipe_init (EV_A);
		2753
2033	signal (w->signum, ev_sighandler);	2754	signal (w->signum, ev_sighandler);
2034	#else	2755	# else
2035	struct sigaction sa;	2756	struct sigaction sa;
		2757
		2758	evpipe_init (EV_A);
		2759
2036	sa.sa_handler = ev_sighandler;	2760	sa.sa_handler = ev_sighandler;
2037	sigfillset (&sa.sa_mask);	2761	sigfillset (&sa.sa_mask);
2038	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2762	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2039	sigaction (w->signum, &sa, 0);	2763	sigaction (w->signum, &sa, 0);
		2764
		2765	sigemptyset (&sa.sa_mask);
		2766	sigaddset (&sa.sa_mask, w->signum);
		2767	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2040	#endif	2768	#endif
2041	}	2769	}
		2770
		2771	EV_FREQUENT_CHECK;
2042	}	2772	}
2043		2773
2044	void noinline	2774	void noinline
2045	ev_signal_stop (EV_P_ ev_signal *w)	2775	ev_signal_stop (EV_P_ ev_signal *w)
2046	{	2776	{
2047	clear_pending (EV_A_ (W)w);	2777	clear_pending (EV_A_ (W)w);
2048	if (expect_false (!ev_is_active (w)))	2778	if (expect_false (!ev_is_active (w)))
2049	return;	2779	return;
2050		2780
		2781	EV_FREQUENT_CHECK;
		2782
2051	wlist_del (&signals [w->signum - 1].head, (WL)w);	2783	wlist_del (&signals [w->signum - 1].head, (WL)w);
2052	ev_stop (EV_A_ (W)w);	2784	ev_stop (EV_A_ (W)w);
2053		2785
2054	if (!signals [w->signum - 1].head)	2786	if (!signals [w->signum - 1].head)
		2787	{
		2788	#if EV_MULTIPLICITY
		2789	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2790	#endif
		2791	#if EV_USE_SIGNALFD
		2792	if (sigfd >= 0)
		2793	{
		2794	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D
		2795	sigdelset (&sigfd_set, w->signum);
		2796	signalfd (sigfd, &sigfd_set, 0);
		2797	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D
		2798	/*TODO: maybe unblock signal? */
		2799	}
		2800	else
		2801	#endif
2055	signal (w->signum, SIG_DFL);	2802	signal (w->signum, SIG_DFL);
		2803	}
		2804
		2805	EV_FREQUENT_CHECK;
2056	}	2806	}
2057		2807
2058	void	2808	void
2059	ev_child_start (EV_P_ ev_child *w)	2809	ev_child_start (EV_P_ ev_child *w)
2060	{	2810	{
2061	#if EV_MULTIPLICITY	2811	#if EV_MULTIPLICITY
2062	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2812	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2063	#endif	2813	#endif
2064	if (expect_false (ev_is_active (w)))	2814	if (expect_false (ev_is_active (w)))
2065	return;	2815	return;
2066		2816
		2817	EV_FREQUENT_CHECK;
		2818
2067	ev_start (EV_A_ (W)w, 1);	2819	ev_start (EV_A_ (W)w, 1);
2068	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2820	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2821
		2822	EV_FREQUENT_CHECK;
2069	}	2823	}
2070		2824
2071	void	2825	void
2072	ev_child_stop (EV_P_ ev_child *w)	2826	ev_child_stop (EV_P_ ev_child *w)
2073	{	2827	{
2074	clear_pending (EV_A_ (W)w);	2828	clear_pending (EV_A_ (W)w);
2075	if (expect_false (!ev_is_active (w)))	2829	if (expect_false (!ev_is_active (w)))
2076	return;	2830	return;
2077		2831
		2832	EV_FREQUENT_CHECK;
		2833
2078	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2834	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2079	ev_stop (EV_A_ (W)w);	2835	ev_stop (EV_A_ (W)w);
		2836
		2837	EV_FREQUENT_CHECK;
2080	}	2838	}
2081		2839
2082	#if EV_STAT_ENABLE	2840	#if EV_STAT_ENABLE
2083		2841
2084	# ifdef _WIN32	2842	# ifdef _WIN32
2085	# undef lstat	2843	# undef lstat
2086	# define lstat(a,b) _stati64 (a,b)	2844	# define lstat(a,b) _stati64 (a,b)
2087	# endif	2845	# endif
2088		2846
2089	#define DEF_STAT_INTERVAL 5.0074891	2847	#define DEF_STAT_INTERVAL 5.0074891
		2848	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2090	#define MIN_STAT_INTERVAL 0.1074891	2849	#define MIN_STAT_INTERVAL 0.1074891
2091		2850
2092	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2851	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2093		2852
2094	#if EV_USE_INOTIFY	2853	#if EV_USE_INOTIFY
2095	# define EV_INOTIFY_BUFSIZE 8192	2854	# define EV_INOTIFY_BUFSIZE 8192
…		…
2099	{	2858	{
2100	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);	2859	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);
2101		2860
2102	if (w->wd < 0)	2861	if (w->wd < 0)
2103	{	2862	{
		2863	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2104	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2864	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2105		2865
2106	/* monitor some parent directory for speedup hints */	2866	/* monitor some parent directory for speedup hints */
		2867	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2868	/* but an efficiency issue only */
2107	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2869	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2108	{	2870	{
2109	char path [4096];	2871	char path [4096];
2110	strcpy (path, w->path);	2872	strcpy (path, w->path);
2111		2873
…		…
2114	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2876	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2115	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2877	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2116		2878
2117	char *pend = strrchr (path, '/');	2879	char *pend = strrchr (path, '/');
2118		2880
2119	if (!pend)	2881	if (!pend || pend == path)
2120	break; /* whoops, no '/', complain to your admin */	2882	break;
2121		2883
2122	*pend = 0;	2884	*pend = 0;
2123	w->wd = inotify_add_watch (fs_fd, path, mask);	2885	w->wd = inotify_add_watch (fs_fd, path, mask);
2124	}	2886	}
2125	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2887	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2126	}	2888	}
2127	}	2889	}
2128	else
2129	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2130		2890
2131	if (w->wd >= 0)	2891	if (w->wd >= 0)
		2892	{
		2893	struct statfs sfs;
		2894
2132	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2895	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2896
		2897	/* now local changes will be tracked by inotify, but remote changes won't */
		2898	/* unless the filesystem is known to be local, we therefore still poll */
		2899	/* also do poll on <2.6.25, but with normal frequency */
		2900
		2901	if (fs_2625 && !statfs (w->path, &sfs))
		2902	if (sfs.f_type == 0x1373 /* devfs */
		2903	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2904	|| sfs.f_type == 0x3153464a /* jfs */
		2905	|| sfs.f_type == 0x52654973 /* reiser3 */
		2906	|| sfs.f_type == 0x01021994 /* tempfs */
		2907	|| sfs.f_type == 0x58465342 /* xfs */)
		2908	return;
		2909
		2910	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2911	ev_timer_again (EV_A_ &w->timer);
		2912	}
2133	}	2913	}
2134		2914
2135	static void noinline	2915	static void noinline
2136	infy_del (EV_P_ ev_stat *w)	2916	infy_del (EV_P_ ev_stat *w)
2137	{	2917	{
…		…
2151		2931
2152	static void noinline	2932	static void noinline
2153	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2933	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2154	{	2934	{
2155	if (slot < 0)	2935	if (slot < 0)
2156	/* overflow, need to check for all hahs slots */	2936	/* overflow, need to check for all hash slots */
2157	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2937	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2158	infy_wd (EV_A_ slot, wd, ev);	2938	infy_wd (EV_A_ slot, wd, ev);
2159	else	2939	else
2160	{	2940	{
2161	WL w_;	2941	WL w_;
…		…
2167		2947
2168	if (w->wd == wd || wd == -1)	2948	if (w->wd == wd || wd == -1)
2169	{	2949	{
2170	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2950	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2171	{	2951	{
		2952	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2172	w->wd = -1;	2953	w->wd = -1;
2173	infy_add (EV_A_ w); /* re-add, no matter what */	2954	infy_add (EV_A_ w); /* re-add, no matter what */
2174	}	2955	}
2175		2956
2176	stat_timer_cb (EV_A_ &w->timer, 0);	2957	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2189		2970
2190	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	2971	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
2191	infy_wd (EV_A_ ev->wd, ev->wd, ev);	2972	infy_wd (EV_A_ ev->wd, ev->wd, ev);
2192	}	2973	}
2193		2974
2194	void inline_size	2975	inline_size void
		2976	check_2625 (EV_P)
		2977	{
		2978	/* kernels < 2.6.25 are borked
		2979	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2980	*/
		2981	struct utsname buf;
		2982	int major, minor, micro;
		2983
		2984	if (uname (&buf))
		2985	return;
		2986
		2987	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2988	return;
		2989
		2990	if (major < 2
		2991	|| (major == 2 && minor < 6)
		2992	|| (major == 2 && minor == 6 && micro < 25))
		2993	return;
		2994
		2995	fs_2625 = 1;
		2996	}
		2997
		2998	inline_size int
		2999	infy_newfd (void)
		3000	{
		3001	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3002	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3003	if (fd >= 0)
		3004	return fd;
		3005	#endif
		3006	return inotify_init ();
		3007	}
		3008
		3009	inline_size void
2195	infy_init (EV_P)	3010	infy_init (EV_P)
2196	{	3011	{
2197	if (fs_fd != -2)	3012	if (fs_fd != -2)
2198	return;	3013	return;
2199		3014
		3015	fs_fd = -1;
		3016
		3017	check_2625 (EV_A);
		3018
2200	fs_fd = inotify_init ();	3019	fs_fd = infy_newfd ();
2201		3020
2202	if (fs_fd >= 0)	3021	if (fs_fd >= 0)
2203	{	3022	{
		3023	fd_intern (fs_fd);
2204	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3024	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2205	ev_set_priority (&fs_w, EV_MAXPRI);	3025	ev_set_priority (&fs_w, EV_MAXPRI);
2206	ev_io_start (EV_A_ &fs_w);	3026	ev_io_start (EV_A_ &fs_w);
		3027	ev_unref (EV_A);
2207	}	3028	}
2208	}	3029	}
2209		3030
2210	void inline_size	3031	inline_size void
2211	infy_fork (EV_P)	3032	infy_fork (EV_P)
2212	{	3033	{
2213	int slot;	3034	int slot;
2214		3035
2215	if (fs_fd < 0)	3036	if (fs_fd < 0)
2216	return;	3037	return;
2217		3038
		3039	ev_ref (EV_A);
		3040	ev_io_stop (EV_A_ &fs_w);
2218	close (fs_fd);	3041	close (fs_fd);
2219	fs_fd = inotify_init ();	3042	fs_fd = infy_newfd ();
		3043
		3044	if (fs_fd >= 0)
		3045	{
		3046	fd_intern (fs_fd);
		3047	ev_io_set (&fs_w, fs_fd, EV_READ);
		3048	ev_io_start (EV_A_ &fs_w);
		3049	ev_unref (EV_A);
		3050	}
2220		3051
2221	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2222	{	3053	{
2223	WL w_ = fs_hash [slot].head;	3054	WL w_ = fs_hash [slot].head;
2224	fs_hash [slot].head = 0;	3055	fs_hash [slot].head = 0;
…		…
2231	w->wd = -1;	3062	w->wd = -1;
2232		3063
2233	if (fs_fd >= 0)	3064	if (fs_fd >= 0)
2234	infy_add (EV_A_ w); /* re-add, no matter what */	3065	infy_add (EV_A_ w); /* re-add, no matter what */
2235	else	3066	else
2236	ev_timer_start (EV_A_ &w->timer);	3067	ev_timer_again (EV_A_ &w->timer);
2237	}	3068	}
2238
2239	}	3069	}
2240	}	3070	}
2241		3071
		3072	#endif
		3073
		3074	#ifdef _WIN32
		3075	# define EV_LSTAT(p,b) _stati64 (p, b)
		3076	#else
		3077	# define EV_LSTAT(p,b) lstat (p, b)
2242	#endif	3078	#endif
2243		3079
2244	void	3080	void
2245	ev_stat_stat (EV_P_ ev_stat *w)	3081	ev_stat_stat (EV_P_ ev_stat *w)
2246	{	3082	{
…		…
2273	|| w->prev.st_atime != w->attr.st_atime	3109	|| w->prev.st_atime != w->attr.st_atime
2274	|| w->prev.st_mtime != w->attr.st_mtime	3110	|| w->prev.st_mtime != w->attr.st_mtime
2275	|| w->prev.st_ctime != w->attr.st_ctime	3111	|| w->prev.st_ctime != w->attr.st_ctime
2276	) {	3112	) {
2277	#if EV_USE_INOTIFY	3113	#if EV_USE_INOTIFY
		3114	if (fs_fd >= 0)
		3115	{
2278	infy_del (EV_A_ w);	3116	infy_del (EV_A_ w);
2279	infy_add (EV_A_ w);	3117	infy_add (EV_A_ w);
2280	ev_stat_stat (EV_A_ w); /* avoid race... */	3118	ev_stat_stat (EV_A_ w); /* avoid race... */
		3119	}
2281	#endif	3120	#endif
2282		3121
2283	ev_feed_event (EV_A_ w, EV_STAT);	3122	ev_feed_event (EV_A_ w, EV_STAT);
2284	}	3123	}
2285	}	3124	}
…		…
2288	ev_stat_start (EV_P_ ev_stat *w)	3127	ev_stat_start (EV_P_ ev_stat *w)
2289	{	3128	{
2290	if (expect_false (ev_is_active (w)))	3129	if (expect_false (ev_is_active (w)))
2291	return;	3130	return;
2292		3131
2293	/* since we use memcmp, we need to clear any padding data etc. */
2294	memset (&w->prev, 0, sizeof (ev_statdata));
2295	memset (&w->attr, 0, sizeof (ev_statdata));
2296
2297	ev_stat_stat (EV_A_ w);	3132	ev_stat_stat (EV_A_ w);
2298		3133
		3134	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2299	if (w->interval < MIN_STAT_INTERVAL)	3135	w->interval = MIN_STAT_INTERVAL;
2300	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2301		3136
2302	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3137	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2303	ev_set_priority (&w->timer, ev_priority (w));	3138	ev_set_priority (&w->timer, ev_priority (w));
2304		3139
2305	#if EV_USE_INOTIFY	3140	#if EV_USE_INOTIFY
2306	infy_init (EV_A);	3141	infy_init (EV_A);
2307		3142
2308	if (fs_fd >= 0)	3143	if (fs_fd >= 0)
2309	infy_add (EV_A_ w);	3144	infy_add (EV_A_ w);
2310	else	3145	else
2311	#endif	3146	#endif
2312	ev_timer_start (EV_A_ &w->timer);	3147	ev_timer_again (EV_A_ &w->timer);
2313		3148
2314	ev_start (EV_A_ (W)w, 1);	3149	ev_start (EV_A_ (W)w, 1);
		3150
		3151	EV_FREQUENT_CHECK;
2315	}	3152	}
2316		3153
2317	void	3154	void
2318	ev_stat_stop (EV_P_ ev_stat *w)	3155	ev_stat_stop (EV_P_ ev_stat *w)
2319	{	3156	{
2320	clear_pending (EV_A_ (W)w);	3157	clear_pending (EV_A_ (W)w);
2321	if (expect_false (!ev_is_active (w)))	3158	if (expect_false (!ev_is_active (w)))
2322	return;	3159	return;
2323		3160
		3161	EV_FREQUENT_CHECK;
		3162
2324	#if EV_USE_INOTIFY	3163	#if EV_USE_INOTIFY
2325	infy_del (EV_A_ w);	3164	infy_del (EV_A_ w);
2326	#endif	3165	#endif
2327	ev_timer_stop (EV_A_ &w->timer);	3166	ev_timer_stop (EV_A_ &w->timer);
2328		3167
2329	ev_stop (EV_A_ (W)w);	3168	ev_stop (EV_A_ (W)w);
		3169
		3170	EV_FREQUENT_CHECK;
2330	}	3171	}
2331	#endif	3172	#endif
2332		3173
2333	#if EV_IDLE_ENABLE	3174	#if EV_IDLE_ENABLE
2334	void	3175	void
…		…
2336	{	3177	{
2337	if (expect_false (ev_is_active (w)))	3178	if (expect_false (ev_is_active (w)))
2338	return;	3179	return;
2339		3180
2340	pri_adjust (EV_A_ (W)w);	3181	pri_adjust (EV_A_ (W)w);
		3182
		3183	EV_FREQUENT_CHECK;
2341		3184
2342	{	3185	{
2343	int active = ++idlecnt [ABSPRI (w)];	3186	int active = ++idlecnt [ABSPRI (w)];
2344		3187
2345	++idleall;	3188	++idleall;
2346	ev_start (EV_A_ (W)w, active);	3189	ev_start (EV_A_ (W)w, active);
2347		3190
2348	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3191	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2349	idles [ABSPRI (w)][active - 1] = w;	3192	idles [ABSPRI (w)][active - 1] = w;
2350	}	3193	}
		3194
		3195	EV_FREQUENT_CHECK;
2351	}	3196	}
2352		3197
2353	void	3198	void
2354	ev_idle_stop (EV_P_ ev_idle *w)	3199	ev_idle_stop (EV_P_ ev_idle *w)
2355	{	3200	{
2356	clear_pending (EV_A_ (W)w);	3201	clear_pending (EV_A_ (W)w);
2357	if (expect_false (!ev_is_active (w)))	3202	if (expect_false (!ev_is_active (w)))
2358	return;	3203	return;
2359		3204
		3205	EV_FREQUENT_CHECK;
		3206
2360	{	3207	{
2361	int active = ((W)w)->active;	3208	int active = ev_active (w);
2362		3209
2363	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3210	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2364	((W)idles [ABSPRI (w)][active - 1])->active = active;	3211	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2365		3212
2366	ev_stop (EV_A_ (W)w);	3213	ev_stop (EV_A_ (W)w);
2367	--idleall;	3214	--idleall;
2368	}	3215	}
		3216
		3217	EV_FREQUENT_CHECK;
2369	}	3218	}
2370	#endif	3219	#endif
2371		3220
2372	void	3221	void
2373	ev_prepare_start (EV_P_ ev_prepare *w)	3222	ev_prepare_start (EV_P_ ev_prepare *w)
2374	{	3223	{
2375	if (expect_false (ev_is_active (w)))	3224	if (expect_false (ev_is_active (w)))
2376	return;	3225	return;
		3226
		3227	EV_FREQUENT_CHECK;
2377		3228
2378	ev_start (EV_A_ (W)w, ++preparecnt);	3229	ev_start (EV_A_ (W)w, ++preparecnt);
2379	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3230	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2380	prepares [preparecnt - 1] = w;	3231	prepares [preparecnt - 1] = w;
		3232
		3233	EV_FREQUENT_CHECK;
2381	}	3234	}
2382		3235
2383	void	3236	void
2384	ev_prepare_stop (EV_P_ ev_prepare *w)	3237	ev_prepare_stop (EV_P_ ev_prepare *w)
2385	{	3238	{
2386	clear_pending (EV_A_ (W)w);	3239	clear_pending (EV_A_ (W)w);
2387	if (expect_false (!ev_is_active (w)))	3240	if (expect_false (!ev_is_active (w)))
2388	return;	3241	return;
2389		3242
		3243	EV_FREQUENT_CHECK;
		3244
2390	{	3245	{
2391	int active = ((W)w)->active;	3246	int active = ev_active (w);
		3247
2392	prepares [active - 1] = prepares [--preparecnt];	3248	prepares [active - 1] = prepares [--preparecnt];
2393	((W)prepares [active - 1])->active = active;	3249	ev_active (prepares [active - 1]) = active;
2394	}	3250	}
2395		3251
2396	ev_stop (EV_A_ (W)w);	3252	ev_stop (EV_A_ (W)w);
		3253
		3254	EV_FREQUENT_CHECK;
2397	}	3255	}
2398		3256
2399	void	3257	void
2400	ev_check_start (EV_P_ ev_check *w)	3258	ev_check_start (EV_P_ ev_check *w)
2401	{	3259	{
2402	if (expect_false (ev_is_active (w)))	3260	if (expect_false (ev_is_active (w)))
2403	return;	3261	return;
		3262
		3263	EV_FREQUENT_CHECK;
2404		3264
2405	ev_start (EV_A_ (W)w, ++checkcnt);	3265	ev_start (EV_A_ (W)w, ++checkcnt);
2406	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3266	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2407	checks [checkcnt - 1] = w;	3267	checks [checkcnt - 1] = w;
		3268
		3269	EV_FREQUENT_CHECK;
2408	}	3270	}
2409		3271
2410	void	3272	void
2411	ev_check_stop (EV_P_ ev_check *w)	3273	ev_check_stop (EV_P_ ev_check *w)
2412	{	3274	{
2413	clear_pending (EV_A_ (W)w);	3275	clear_pending (EV_A_ (W)w);
2414	if (expect_false (!ev_is_active (w)))	3276	if (expect_false (!ev_is_active (w)))
2415	return;	3277	return;
2416		3278
		3279	EV_FREQUENT_CHECK;
		3280
2417	{	3281	{
2418	int active = ((W)w)->active;	3282	int active = ev_active (w);
		3283
2419	checks [active - 1] = checks [--checkcnt];	3284	checks [active - 1] = checks [--checkcnt];
2420	((W)checks [active - 1])->active = active;	3285	ev_active (checks [active - 1]) = active;
2421	}	3286	}
2422		3287
2423	ev_stop (EV_A_ (W)w);	3288	ev_stop (EV_A_ (W)w);
		3289
		3290	EV_FREQUENT_CHECK;
2424	}	3291	}
2425		3292
2426	#if EV_EMBED_ENABLE	3293	#if EV_EMBED_ENABLE
2427	void noinline	3294	void noinline
2428	ev_embed_sweep (EV_P_ ev_embed *w)	3295	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2445	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3312	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2446	{	3313	{
2447	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3314	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2448		3315
2449	{	3316	{
2450	struct ev_loop *loop = w->other;	3317	EV_P = w->other;
2451		3318
2452	while (fdchangecnt)	3319	while (fdchangecnt)
2453	{	3320	{
2454	fd_reify (EV_A);	3321	fd_reify (EV_A);
2455	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3322	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2456	}	3323	}
2457	}	3324	}
2458	}	3325	}
2459		3326
		3327	static void
		3328	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3329	{
		3330	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3331
		3332	ev_embed_stop (EV_A_ w);
		3333
		3334	{
		3335	EV_P = w->other;
		3336
		3337	ev_loop_fork (EV_A);
		3338	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3339	}
		3340
		3341	ev_embed_start (EV_A_ w);
		3342	}
		3343
2460	#if 0	3344	#if 0
2461	static void	3345	static void
2462	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3346	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2463	{	3347	{
2464	ev_idle_stop (EV_A_ idle);	3348	ev_idle_stop (EV_A_ idle);
…		…
2470	{	3354	{
2471	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
2472	return;	3356	return;
2473		3357
2474	{	3358	{
2475	struct ev_loop *loop = w->other;	3359	EV_P = w->other;
2476	assert (("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 ()));
2477	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);
2478	}	3362	}
		3363
		3364	EV_FREQUENT_CHECK;
2479		3365
2480	ev_set_priority (&w->io, ev_priority (w));	3366	ev_set_priority (&w->io, ev_priority (w));
2481	ev_io_start (EV_A_ &w->io);	3367	ev_io_start (EV_A_ &w->io);
2482		3368
2483	ev_prepare_init (&w->prepare, embed_prepare_cb);	3369	ev_prepare_init (&w->prepare, embed_prepare_cb);
2484	ev_set_priority (&w->prepare, EV_MINPRI);	3370	ev_set_priority (&w->prepare, EV_MINPRI);
2485	ev_prepare_start (EV_A_ &w->prepare);	3371	ev_prepare_start (EV_A_ &w->prepare);
2486		3372
		3373	ev_fork_init (&w->fork, embed_fork_cb);
		3374	ev_fork_start (EV_A_ &w->fork);
		3375
2487	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3376	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2488		3377
2489	ev_start (EV_A_ (W)w, 1);	3378	ev_start (EV_A_ (W)w, 1);
		3379
		3380	EV_FREQUENT_CHECK;
2490	}	3381	}
2491		3382
2492	void	3383	void
2493	ev_embed_stop (EV_P_ ev_embed *w)	3384	ev_embed_stop (EV_P_ ev_embed *w)
2494	{	3385	{
2495	clear_pending (EV_A_ (W)w);	3386	clear_pending (EV_A_ (W)w);
2496	if (expect_false (!ev_is_active (w)))	3387	if (expect_false (!ev_is_active (w)))
2497	return;	3388	return;
2498		3389
		3390	EV_FREQUENT_CHECK;
		3391
2499	ev_io_stop (EV_A_ &w->io);	3392	ev_io_stop (EV_A_ &w->io);
2500	ev_prepare_stop (EV_A_ &w->prepare);	3393	ev_prepare_stop (EV_A_ &w->prepare);
		3394	ev_fork_stop (EV_A_ &w->fork);
2501		3395
2502	ev_stop (EV_A_ (W)w);	3396	EV_FREQUENT_CHECK;
2503	}	3397	}
2504	#endif	3398	#endif
2505		3399
2506	#if EV_FORK_ENABLE	3400	#if EV_FORK_ENABLE
2507	void	3401	void
2508	ev_fork_start (EV_P_ ev_fork *w)	3402	ev_fork_start (EV_P_ ev_fork *w)
2509	{	3403	{
2510	if (expect_false (ev_is_active (w)))	3404	if (expect_false (ev_is_active (w)))
2511	return;	3405	return;
		3406
		3407	EV_FREQUENT_CHECK;
2512		3408
2513	ev_start (EV_A_ (W)w, ++forkcnt);	3409	ev_start (EV_A_ (W)w, ++forkcnt);
2514	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3410	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2515	forks [forkcnt - 1] = w;	3411	forks [forkcnt - 1] = w;
		3412
		3413	EV_FREQUENT_CHECK;
2516	}	3414	}
2517		3415
2518	void	3416	void
2519	ev_fork_stop (EV_P_ ev_fork *w)	3417	ev_fork_stop (EV_P_ ev_fork *w)
2520	{	3418	{
2521	clear_pending (EV_A_ (W)w);	3419	clear_pending (EV_A_ (W)w);
2522	if (expect_false (!ev_is_active (w)))	3420	if (expect_false (!ev_is_active (w)))
2523	return;	3421	return;
2524		3422
		3423	EV_FREQUENT_CHECK;
		3424
2525	{	3425	{
2526	int active = ((W)w)->active;	3426	int active = ev_active (w);
		3427
2527	forks [active - 1] = forks [--forkcnt];	3428	forks [active - 1] = forks [--forkcnt];
2528	((W)forks [active - 1])->active = active;	3429	ev_active (forks [active - 1]) = active;
2529	}	3430	}
2530		3431
2531	ev_stop (EV_A_ (W)w);	3432	ev_stop (EV_A_ (W)w);
		3433
		3434	EV_FREQUENT_CHECK;
2532	}	3435	}
2533	#endif	3436	#endif
2534		3437
2535	#if EV_ASYNC_ENABLE	3438	#if EV_ASYNC_ENABLE
2536	void	3439	void
…		…
2538	{	3441	{
2539	if (expect_false (ev_is_active (w)))	3442	if (expect_false (ev_is_active (w)))
2540	return;	3443	return;
2541		3444
2542	evpipe_init (EV_A);	3445	evpipe_init (EV_A);
		3446
		3447	EV_FREQUENT_CHECK;
2543		3448
2544	ev_start (EV_A_ (W)w, ++asynccnt);	3449	ev_start (EV_A_ (W)w, ++asynccnt);
2545	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3450	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2546	asyncs [asynccnt - 1] = w;	3451	asyncs [asynccnt - 1] = w;
		3452
		3453	EV_FREQUENT_CHECK;
2547	}	3454	}
2548		3455
2549	void	3456	void
2550	ev_async_stop (EV_P_ ev_async *w)	3457	ev_async_stop (EV_P_ ev_async *w)
2551	{	3458	{
2552	clear_pending (EV_A_ (W)w);	3459	clear_pending (EV_A_ (W)w);
2553	if (expect_false (!ev_is_active (w)))	3460	if (expect_false (!ev_is_active (w)))
2554	return;	3461	return;
2555		3462
		3463	EV_FREQUENT_CHECK;
		3464
2556	{	3465	{
2557	int active = ((W)w)->active;	3466	int active = ev_active (w);
		3467
2558	asyncs [active - 1] = asyncs [--asynccnt];	3468	asyncs [active - 1] = asyncs [--asynccnt];
2559	((W)asyncs [active - 1])->active = active;	3469	ev_active (asyncs [active - 1]) = active;
2560	}	3470	}
2561		3471
2562	ev_stop (EV_A_ (W)w);	3472	ev_stop (EV_A_ (W)w);
		3473
		3474	EV_FREQUENT_CHECK;
2563	}	3475	}
2564		3476
2565	void	3477	void
2566	ev_async_send (EV_P_ ev_async *w)	3478	ev_async_send (EV_P_ ev_async *w)
2567	{	3479	{
2568	w->sent = 1;	3480	w->sent = 1;
2569	evpipe_write (EV_A_ &gotasync);	3481	evpipe_write (EV_A_ &async_pending);
2570	}	3482	}
2571	#endif	3483	#endif
2572		3484
2573	/*****************************************************************************/	3485	/*****************************************************************************/
2574		3486
…		…
2584	once_cb (EV_P_ struct ev_once *once, int revents)	3496	once_cb (EV_P_ struct ev_once *once, int revents)
2585	{	3497	{
2586	void (*cb)(int revents, void *arg) = once->cb;	3498	void (*cb)(int revents, void *arg) = once->cb;
2587	void *arg = once->arg;	3499	void *arg = once->arg;
2588		3500
2589	ev_io_stop (EV_A_ &once->io);	3501	ev_io_stop (EV_A_ &once->io);
2590	ev_timer_stop (EV_A_ &once->to);	3502	ev_timer_stop (EV_A_ &once->to);
2591	ev_free (once);	3503	ev_free (once);
2592		3504
2593	cb (revents, arg);	3505	cb (revents, arg);
2594	}	3506	}
2595		3507
2596	static void	3508	static void
2597	once_cb_io (EV_P_ ev_io *w, int revents)	3509	once_cb_io (EV_P_ ev_io *w, int revents)
2598	{	3510	{
2599	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3511	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3512
		3513	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2600	}	3514	}
2601		3515
2602	static void	3516	static void
2603	once_cb_to (EV_P_ ev_timer *w, int revents)	3517	once_cb_to (EV_P_ ev_timer *w, int revents)
2604	{	3518	{
2605	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3519	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3520
		3521	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2606	}	3522	}
2607		3523
2608	void	3524	void
2609	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3525	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2610	{	3526	{
…		…
2632	ev_timer_set (&once->to, timeout, 0.);	3548	ev_timer_set (&once->to, timeout, 0.);
2633	ev_timer_start (EV_A_ &once->to);	3549	ev_timer_start (EV_A_ &once->to);
2634	}	3550	}
2635	}	3551	}
2636		3552
		3553	/*****************************************************************************/
		3554
		3555	#if EV_WALK_ENABLE
		3556	void
		3557	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3558	{
		3559	int i, j;
		3560	ev_watcher_list *wl, *wn;
		3561
		3562	if (types & (EV_IO | EV_EMBED))
		3563	for (i = 0; i < anfdmax; ++i)
		3564	for (wl = anfds [i].head; wl; )
		3565	{
		3566	wn = wl->next;
		3567
		3568	#if EV_EMBED_ENABLE
		3569	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3570	{
		3571	if (types & EV_EMBED)
		3572	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3573	}
		3574	else
		3575	#endif
		3576	#if EV_USE_INOTIFY
		3577	if (ev_cb ((ev_io *)wl) == infy_cb)
		3578	;
		3579	else
		3580	#endif
		3581	if ((ev_io *)wl != &pipe_w)
		3582	if (types & EV_IO)
		3583	cb (EV_A_ EV_IO, wl);
		3584
		3585	wl = wn;
		3586	}
		3587
		3588	if (types & (EV_TIMER | EV_STAT))
		3589	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3590	#if EV_STAT_ENABLE
		3591	/*TODO: timer is not always active*/
		3592	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3593	{
		3594	if (types & EV_STAT)
		3595	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3596	}
		3597	else
		3598	#endif
		3599	if (types & EV_TIMER)
		3600	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3601
		3602	#if EV_PERIODIC_ENABLE
		3603	if (types & EV_PERIODIC)
		3604	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3605	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3606	#endif
		3607
		3608	#if EV_IDLE_ENABLE
		3609	if (types & EV_IDLE)
		3610	for (j = NUMPRI; i--; )
		3611	for (i = idlecnt [j]; i--; )
		3612	cb (EV_A_ EV_IDLE, idles [j][i]);
		3613	#endif
		3614
		3615	#if EV_FORK_ENABLE
		3616	if (types & EV_FORK)
		3617	for (i = forkcnt; i--; )
		3618	if (ev_cb (forks [i]) != embed_fork_cb)
		3619	cb (EV_A_ EV_FORK, forks [i]);
		3620	#endif
		3621
		3622	#if EV_ASYNC_ENABLE
		3623	if (types & EV_ASYNC)
		3624	for (i = asynccnt; i--; )
		3625	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3626	#endif
		3627
		3628	if (types & EV_PREPARE)
		3629	for (i = preparecnt; i--; )
		3630	#if EV_EMBED_ENABLE
		3631	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3632	#endif
		3633	cb (EV_A_ EV_PREPARE, prepares [i]);
		3634
		3635	if (types & EV_CHECK)
		3636	for (i = checkcnt; i--; )
		3637	cb (EV_A_ EV_CHECK, checks [i]);
		3638
		3639	if (types & EV_SIGNAL)
		3640	for (i = 0; i < EV_NSIG - 1; ++i)
		3641	for (wl = signals [i].head; wl; )
		3642	{
		3643	wn = wl->next;
		3644	cb (EV_A_ EV_SIGNAL, wl);
		3645	wl = wn;
		3646	}
		3647
		3648	if (types & EV_CHILD)
		3649	for (i = EV_PID_HASHSIZE; i--; )
		3650	for (wl = childs [i]; wl; )
		3651	{
		3652	wn = wl->next;
		3653	cb (EV_A_ EV_CHILD, wl);
		3654	wl = wn;
		3655	}
		3656	/* EV_STAT 0x00001000 /* stat data changed */
		3657	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3658	}
		3659	#endif
		3660
2637	#if EV_MULTIPLICITY	3661	#if EV_MULTIPLICITY
2638	#include "ev_wrap.h"	3662	#include "ev_wrap.h"
2639	#endif	3663	#endif
2640		3664
2641	#ifdef __cplusplus	3665	#ifdef __cplusplus

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