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Comparing libev/ev.c (file contents):
Revision 1.246 by root, Wed May 21 12:51:38 2008 UTC vs.
Revision 1.331 by root, Tue Mar 9 08:55:03 2010 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) 2007,2008,2009,2010 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
…		…
96	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
97	# endif	111	# endif
98	# endif	112	# endif
99		113
100	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
102	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE 1
103	# else	117	# else
104	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
105	# endif	119	# endif
106	# endif	120	# 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>
		158	#include <string.h>
136	#include <fcntl.h>	159	#include <fcntl.h>
137	#include <stddef.h>	160	#include <stddef.h>
138		161
139	#include <stdio.h>	162	#include <stdio.h>
140		163
141	#include <assert.h>	164	#include <assert.h>
142	#include <errno.h>	165	#include <errno.h>
143	#include <sys/types.h>	166	#include <sys/types.h>
144	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
145		169
146	#include <signal.h>	170	#include <signal.h>
147		171
148	#ifdef EV_H	172	#ifdef EV_H
149	# include EV_H	173	# include EV_H
…		…
154	#ifndef _WIN32	178	#ifndef _WIN32
155	# include <sys/time.h>	179	# include <sys/time.h>
156	# include <sys/wait.h>	180	# include <sys/wait.h>
157	# include <unistd.h>	181	# include <unistd.h>
158	#else	182	#else
		183	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	185	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
164	#endif	190	#endif
165		191
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	192	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		193
		194	/* try to deduce the maximum number of signals on this platform */
		195	#if defined (EV_NSIG)
		196	/* use what's provided */
		197	#elif defined (NSIG)
		198	# define EV_NSIG (NSIG)
		199	#elif defined(_NSIG)
		200	# define EV_NSIG (_NSIG)
		201	#elif defined (SIGMAX)
		202	# define EV_NSIG (SIGMAX+1)
		203	#elif defined (SIG_MAX)
		204	# define EV_NSIG (SIG_MAX+1)
		205	#elif defined (_SIG_MAX)
		206	# define EV_NSIG (_SIG_MAX+1)
		207	#elif defined (MAXSIG)
		208	# define EV_NSIG (MAXSIG+1)
		209	#elif defined (MAX_SIG)
		210	# define EV_NSIG (MAX_SIG+1)
		211	#elif defined (SIGARRAYSIZE)
		212	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
		213	#elif defined (_sys_nsig)
		214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		215	#else
		216	# error "unable to find value for NSIG, please report"
		217	/* to make it compile regardless, just remove the above line */
		218	# define EV_NSIG 65
		219	#endif
		220
		221	#ifndef EV_USE_CLOCK_SYSCALL
		222	# if __linux && __GLIBC__ >= 2
		223	# define EV_USE_CLOCK_SYSCALL 1
		224	# else
		225	# define EV_USE_CLOCK_SYSCALL 0
		226	# endif
		227	#endif
		228
168	#ifndef EV_USE_MONOTONIC	229	#ifndef EV_USE_MONOTONIC
		230	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		231	# define EV_USE_MONOTONIC 1
		232	# else
169	# define EV_USE_MONOTONIC 0	233	# define EV_USE_MONOTONIC 0
		234	# endif
170	#endif	235	#endif
171		236
172	#ifndef EV_USE_REALTIME	237	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	238	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	239	#endif
175		240
176	#ifndef EV_USE_NANOSLEEP	241	#ifndef EV_USE_NANOSLEEP
		242	# if _POSIX_C_SOURCE >= 199309L
		243	# define EV_USE_NANOSLEEP 1
		244	# else
177	# define EV_USE_NANOSLEEP 0	245	# define EV_USE_NANOSLEEP 0
		246	# endif
178	#endif	247	#endif
179		248
180	#ifndef EV_USE_SELECT	249	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	250	# define EV_USE_SELECT 1
182	#endif	251	#endif
…		…
235	# else	304	# else
236	# define EV_USE_EVENTFD 0	305	# define EV_USE_EVENTFD 0
237	# endif	306	# endif
238	#endif	307	#endif
239		308
		309	#ifndef EV_USE_SIGNALFD
		310	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		311	# define EV_USE_SIGNALFD 1
		312	# else
		313	# define EV_USE_SIGNALFD 0
		314	# endif
		315	#endif
		316
		317	#if 0 /* debugging */
		318	# define EV_VERIFY 3
		319	# define EV_USE_4HEAP 1
		320	# define EV_HEAP_CACHE_AT 1
		321	#endif
		322
		323	#ifndef EV_VERIFY
		324	# define EV_VERIFY !EV_MINIMAL
		325	#endif
		326
240	#ifndef EV_USE_4HEAP	327	#ifndef EV_USE_4HEAP
241	# define EV_USE_4HEAP !EV_MINIMAL	328	# define EV_USE_4HEAP !EV_MINIMAL
242	#endif	329	#endif
243		330
244	#ifndef EV_HEAP_CACHE_AT	331	#ifndef EV_HEAP_CACHE_AT
245	# define EV_HEAP_CACHE_AT !EV_MINIMAL	332	# define EV_HEAP_CACHE_AT !EV_MINIMAL
246	#endif	333	#endif
247		334
		335	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		336	/* which makes programs even slower. might work on other unices, too. */
		337	#if EV_USE_CLOCK_SYSCALL
		338	# include <syscall.h>
		339	# ifdef SYS_clock_gettime
		340	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		341	# undef EV_USE_MONOTONIC
		342	# define EV_USE_MONOTONIC 1
		343	# else
		344	# undef EV_USE_CLOCK_SYSCALL
		345	# define EV_USE_CLOCK_SYSCALL 0
		346	# endif
		347	#endif
		348
248	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	349	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		350
		351	#ifdef _AIX
		352	/* AIX has a completely broken poll.h header */
		353	# undef EV_USE_POLL
		354	# define EV_USE_POLL 0
		355	#endif
249		356
250	#ifndef CLOCK_MONOTONIC	357	#ifndef CLOCK_MONOTONIC
251	# undef EV_USE_MONOTONIC	358	# undef EV_USE_MONOTONIC
252	# define EV_USE_MONOTONIC 0	359	# define EV_USE_MONOTONIC 0
253	#endif	360	#endif
…		…
267	# include <sys/select.h>	374	# include <sys/select.h>
268	# endif	375	# endif
269	#endif	376	#endif
270		377
271	#if EV_USE_INOTIFY	378	#if EV_USE_INOTIFY
		379	# include <sys/utsname.h>
		380	# include <sys/statfs.h>
272	# include <sys/inotify.h>	381	# include <sys/inotify.h>
		382	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		383	# ifndef IN_DONT_FOLLOW
		384	# undef EV_USE_INOTIFY
		385	# define EV_USE_INOTIFY 0
		386	# endif
273	#endif	387	#endif
274		388
275	#if EV_SELECT_IS_WINSOCKET	389	#if EV_SELECT_IS_WINSOCKET
276	# include <winsock.h>	390	# include <winsock.h>
277	#endif	391	#endif
278		392
279	#if EV_USE_EVENTFD	393	#if EV_USE_EVENTFD
280	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	394	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
281	# include <stdint.h>	395	# include <stdint.h>
		396	# ifndef EFD_NONBLOCK
		397	# define EFD_NONBLOCK O_NONBLOCK
		398	# endif
		399	# ifndef EFD_CLOEXEC
		400	# ifdef O_CLOEXEC
		401	# define EFD_CLOEXEC O_CLOEXEC
		402	# else
		403	# define EFD_CLOEXEC 02000000
		404	# endif
		405	# endif
282	# ifdef __cplusplus	406	# ifdef __cplusplus
283	extern "C" {	407	extern "C" {
284	# endif	408	# endif
285	int eventfd (unsigned int initval, int flags);	409	int (eventfd) (unsigned int initval, int flags);
286	# ifdef __cplusplus	410	# ifdef __cplusplus
287	}	411	}
288	# endif	412	# endif
289	#endif	413	#endif
290		414
		415	#if EV_USE_SIGNALFD
		416	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		417	# include <stdint.h>
		418	# ifndef SFD_NONBLOCK
		419	# define SFD_NONBLOCK O_NONBLOCK
		420	# endif
		421	# ifndef SFD_CLOEXEC
		422	# ifdef O_CLOEXEC
		423	# define SFD_CLOEXEC O_CLOEXEC
		424	# else
		425	# define SFD_CLOEXEC 02000000
		426	# endif
		427	# endif
		428	# ifdef __cplusplus
		429	extern "C" {
		430	# endif
		431	int signalfd (int fd, const sigset_t *mask, int flags);
		432
		433	struct signalfd_siginfo
		434	{
		435	uint32_t ssi_signo;
		436	char pad[128 - sizeof (uint32_t)];
		437	};
		438	# ifdef __cplusplus
		439	}
		440	# endif
		441	#endif
		442
		443
291	/**/	444	/**/
		445
		446	#if EV_VERIFY >= 3
		447	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		448	#else
		449	# define EV_FREQUENT_CHECK do { } while (0)
		450	#endif
292		451
293	/*	452	/*
294	* This is used to avoid floating point rounding problems.	453	* This is used to avoid floating point rounding problems.
295	* It is added to ev_rt_now when scheduling periodics	454	* It is added to ev_rt_now when scheduling periodics
296	* to ensure progress, time-wise, even when rounding	455	* to ensure progress, time-wise, even when rounding
…		…
300	*/	459	*/
301	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
302		461
303	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	462	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
304	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	463	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
305	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
306		464
307	#if __GNUC__ >= 4	465	#if __GNUC__ >= 4
308	# define expect(expr,value) __builtin_expect ((expr),(value))	466	# define expect(expr,value) __builtin_expect ((expr),(value))
309	# define noinline __attribute__ ((noinline))	467	# define noinline __attribute__ ((noinline))
310	#else	468	#else
…		…
323	# define inline_speed static noinline	481	# define inline_speed static noinline
324	#else	482	#else
325	# define inline_speed static inline	483	# define inline_speed static inline
326	#endif	484	#endif
327		485
328	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	486	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		487
		488	#if EV_MINPRI == EV_MAXPRI
		489	# define ABSPRI(w) (((W)w), 0)
		490	#else
329	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	491	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		492	#endif
330		493
331	#define EMPTY /* required for microsofts broken pseudo-c compiler */	494	#define EMPTY /* required for microsofts broken pseudo-c compiler */
332	#define EMPTY2(a,b) /* used to suppress some warnings */	495	#define EMPTY2(a,b) /* used to suppress some warnings */
333		496
334	typedef ev_watcher *W;	497	typedef ev_watcher *W;
…		…
336	typedef ev_watcher_time *WT;	499	typedef ev_watcher_time *WT;
337		500
338	#define ev_active(w) ((W)(w))->active	501	#define ev_active(w) ((W)(w))->active
339	#define ev_at(w) ((WT)(w))->at	502	#define ev_at(w) ((WT)(w))->at
340		503
341	#if EV_USE_MONOTONIC	504	#if EV_USE_REALTIME
342	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	505	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
343	/* giving it a reasonably high chance of working on typical architetcures */	506	/* giving it a reasonably high chance of working on typical architetcures */
		507	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		508	#endif
		509
		510	#if EV_USE_MONOTONIC
344	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	511	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		512	#endif
		513
		514	#ifndef EV_FD_TO_WIN32_HANDLE
		515	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		516	#endif
		517	#ifndef EV_WIN32_HANDLE_TO_FD
		518	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		519	#endif
		520	#ifndef EV_WIN32_CLOSE_FD
		521	# define EV_WIN32_CLOSE_FD(fd) close (fd)
345	#endif	522	#endif
346		523
347	#ifdef _WIN32	524	#ifdef _WIN32
348	# include "ev_win32.c"	525	# include "ev_win32.c"
349	#endif	526	#endif
350		527
351	/*****************************************************************************/	528	/*****************************************************************************/
352		529
		530	#if EV_AVOID_STDIO
		531	static void noinline
		532	ev_printerr (const char *msg)
		533	{
		534	write (STDERR_FILENO, msg, strlen (msg));
		535	}
		536	#endif
		537
353	static void (*syserr_cb)(const char *msg);	538	static void (*syserr_cb)(const char *msg);
354		539
355	void	540	void
356	ev_set_syserr_cb (void (*cb)(const char *msg))	541	ev_set_syserr_cb (void (*cb)(const char *msg))
357	{	542	{
358	syserr_cb = cb;	543	syserr_cb = cb;
359	}	544	}
360		545
361	static void noinline	546	static void noinline
362	syserr (const char *msg)	547	ev_syserr (const char *msg)
363	{	548	{
364	if (!msg)	549	if (!msg)
365	msg = "(libev) system error";	550	msg = "(libev) system error";
366		551
367	if (syserr_cb)	552	if (syserr_cb)
368	syserr_cb (msg);	553	syserr_cb (msg);
369	else	554	else
370	{	555	{
		556	#if EV_AVOID_STDIO
		557	const char *err = strerror (errno);
		558
		559	ev_printerr (msg);
		560	ev_printerr (": ");
		561	ev_printerr (err);
		562	ev_printerr ("\n");
		563	#else
371	perror (msg);	564	perror (msg);
		565	#endif
372	abort ();	566	abort ();
373	}	567	}
374	}	568	}
375		569
376	static void *	570	static void *
…		…
401	{	595	{
402	ptr = alloc (ptr, size);	596	ptr = alloc (ptr, size);
403		597
404	if (!ptr && size)	598	if (!ptr && size)
405	{	599	{
		600	#if EV_AVOID_STDIO
		601	ev_printerr ("libev: memory allocation failed, aborting.\n");
		602	#else
406	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	603	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		604	#endif
407	abort ();	605	abort ();
408	}	606	}
409		607
410	return ptr;	608	return ptr;
411	}	609	}
…		…
413	#define ev_malloc(size) ev_realloc (0, (size))	611	#define ev_malloc(size) ev_realloc (0, (size))
414	#define ev_free(ptr) ev_realloc ((ptr), 0)	612	#define ev_free(ptr) ev_realloc ((ptr), 0)
415		613
416	/*****************************************************************************/	614	/*****************************************************************************/
417		615
		616	/* set in reify when reification needed */
		617	#define EV_ANFD_REIFY 1
		618
		619	/* file descriptor info structure */
418	typedef struct	620	typedef struct
419	{	621	{
420	WL head;	622	WL head;
421	unsigned char events;	623	unsigned char events; /* the events watched for */
		624	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		625	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
422	unsigned char reify;	626	unsigned char unused;
		627	#if EV_USE_EPOLL
		628	unsigned int egen; /* generation counter to counter epoll bugs */
		629	#endif
423	#if EV_SELECT_IS_WINSOCKET	630	#if EV_SELECT_IS_WINSOCKET
424	SOCKET handle;	631	SOCKET handle;
425	#endif	632	#endif
426	} ANFD;	633	} ANFD;
427		634
		635	/* stores the pending event set for a given watcher */
428	typedef struct	636	typedef struct
429	{	637	{
430	W w;	638	W w;
431	int events;	639	int events; /* the pending event set for the given watcher */
432	} ANPENDING;	640	} ANPENDING;
433		641
434	#if EV_USE_INOTIFY	642	#if EV_USE_INOTIFY
435	/* hash table entry per inotify-id */	643	/* hash table entry per inotify-id */
436	typedef struct	644	typedef struct
…		…
439	} ANFS;	647	} ANFS;
440	#endif	648	#endif
441		649
442	/* Heap Entry */	650	/* Heap Entry */
443	#if EV_HEAP_CACHE_AT	651	#if EV_HEAP_CACHE_AT
		652	/* a heap element */
444	typedef struct {	653	typedef struct {
445	ev_tstamp at;	654	ev_tstamp at;
446	WT w;	655	WT w;
447	} ANHE;	656	} ANHE;
448		657
449	#define ANHE_w(he) (he).w /* access watcher, read-write */	658	#define ANHE_w(he) (he).w /* access watcher, read-write */
450	#define ANHE_at(he) (he).at /* access cached at, read-only */	659	#define ANHE_at(he) (he).at /* access cached at, read-only */
451	#define ANHE_at_set(he) (he).at = (he).w->at /* update at from watcher */	660	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
452	#else	661	#else
		662	/* a heap element */
453	typedef WT ANHE;	663	typedef WT ANHE;
454		664
455	#define ANHE_w(he) (he)	665	#define ANHE_w(he) (he)
456	#define ANHE_at(he) (he)->at	666	#define ANHE_at(he) (he)->at
457	#define ANHE_at_set(he)	667	#define ANHE_at_cache(he)
458	#endif	668	#endif
459		669
460	#if EV_MULTIPLICITY	670	#if EV_MULTIPLICITY
461		671
462	struct ev_loop	672	struct ev_loop
…		…
481		691
482	static int ev_default_loop_ptr;	692	static int ev_default_loop_ptr;
483		693
484	#endif	694	#endif
485		695
		696	#if EV_MINIMAL < 2
		697	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		698	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		699	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		700	#else
		701	# define EV_RELEASE_CB (void)0
		702	# define EV_ACQUIRE_CB (void)0
		703	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		704	#endif
		705
		706	#define EVUNLOOP_RECURSE 0x80
		707
486	/*****************************************************************************/	708	/*****************************************************************************/
487		709
		710	#ifndef EV_HAVE_EV_TIME
488	ev_tstamp	711	ev_tstamp
489	ev_time (void)	712	ev_time (void)
490	{	713	{
491	#if EV_USE_REALTIME	714	#if EV_USE_REALTIME
		715	if (expect_true (have_realtime))
		716	{
492	struct timespec ts;	717	struct timespec ts;
493	clock_gettime (CLOCK_REALTIME, &ts);	718	clock_gettime (CLOCK_REALTIME, &ts);
494	return ts.tv_sec + ts.tv_nsec * 1e-9;	719	return ts.tv_sec + ts.tv_nsec * 1e-9;
495	#else	720	}
		721	#endif
		722
496	struct timeval tv;	723	struct timeval tv;
497	gettimeofday (&tv, 0);	724	gettimeofday (&tv, 0);
498	return tv.tv_sec + tv.tv_usec * 1e-6;	725	return tv.tv_sec + tv.tv_usec * 1e-6;
499	#endif
500	}	726	}
		727	#endif
501		728
502	ev_tstamp inline_size	729	inline_size ev_tstamp
503	get_clock (void)	730	get_clock (void)
504	{	731	{
505	#if EV_USE_MONOTONIC	732	#if EV_USE_MONOTONIC
506	if (expect_true (have_monotonic))	733	if (expect_true (have_monotonic))
507	{	734	{
…		…
540	struct timeval tv;	767	struct timeval tv;
541		768
542	tv.tv_sec = (time_t)delay;	769	tv.tv_sec = (time_t)delay;
543	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	770	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
544		771
		772	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		773	/* something not guaranteed by newer posix versions, but guaranteed */
		774	/* by older ones */
545	select (0, 0, 0, 0, &tv);	775	select (0, 0, 0, 0, &tv);
546	#endif	776	#endif
547	}	777	}
548	}	778	}
549		779
550	/*****************************************************************************/	780	/*****************************************************************************/
551		781
552	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	782	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
553		783
554	int inline_size	784	/* find a suitable new size for the given array, */
		785	/* hopefully by rounding to a ncie-to-malloc size */
		786	inline_size int
555	array_nextsize (int elem, int cur, int cnt)	787	array_nextsize (int elem, int cur, int cnt)
556	{	788	{
557	int ncur = cur + 1;	789	int ncur = cur + 1;
558		790
559	do	791	do
…		…
576	array_realloc (int elem, void *base, int *cur, int cnt)	808	array_realloc (int elem, void *base, int *cur, int cnt)
577	{	809	{
578	*cur = array_nextsize (elem, *cur, cnt);	810	*cur = array_nextsize (elem, *cur, cnt);
579	return ev_realloc (base, elem * *cur);	811	return ev_realloc (base, elem * *cur);
580	}	812	}
		813
		814	#define array_init_zero(base,count) \
		815	memset ((void *)(base), 0, sizeof (*(base)) * (count))
581		816
582	#define array_needsize(type,base,cur,cnt,init) \	817	#define array_needsize(type,base,cur,cnt,init) \
583	if (expect_false ((cnt) > (cur))) \	818	if (expect_false ((cnt) > (cur))) \
584	{ \	819	{ \
585	int ocur_ = (cur); \	820	int ocur_ = (cur); \
…		…
597	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	832	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
598	}	833	}
599	#endif	834	#endif
600		835
601	#define array_free(stem, idx) \	836	#define array_free(stem, idx) \
602	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	837	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
603		838
604	/*****************************************************************************/	839	/*****************************************************************************/
		840
		841	/* dummy callback for pending events */
		842	static void noinline
		843	pendingcb (EV_P_ ev_prepare *w, int revents)
		844	{
		845	}
605		846
606	void noinline	847	void noinline
607	ev_feed_event (EV_P_ void *w, int revents)	848	ev_feed_event (EV_P_ void *w, int revents)
608	{	849	{
609	W w_ = (W)w;	850	W w_ = (W)w;
…		…
618	pendings [pri][w_->pending - 1].w = w_;	859	pendings [pri][w_->pending - 1].w = w_;
619	pendings [pri][w_->pending - 1].events = revents;	860	pendings [pri][w_->pending - 1].events = revents;
620	}	861	}
621	}	862	}
622		863
623	void inline_speed	864	inline_speed void
		865	feed_reverse (EV_P_ W w)
		866	{
		867	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		868	rfeeds [rfeedcnt++] = w;
		869	}
		870
		871	inline_size void
		872	feed_reverse_done (EV_P_ int revents)
		873	{
		874	do
		875	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		876	while (rfeedcnt);
		877	}
		878
		879	inline_speed void
624	queue_events (EV_P_ W *events, int eventcnt, int type)	880	queue_events (EV_P_ W *events, int eventcnt, int type)
625	{	881	{
626	int i;	882	int i;
627		883
628	for (i = 0; i < eventcnt; ++i)	884	for (i = 0; i < eventcnt; ++i)
629	ev_feed_event (EV_A_ events [i], type);	885	ev_feed_event (EV_A_ events [i], type);
630	}	886	}
631		887
632	/*****************************************************************************/	888	/*****************************************************************************/
633		889
634	void inline_size	890	inline_speed void
635	anfds_init (ANFD *base, int count)
636	{
637	while (count--)
638	{
639	base->head = 0;
640	base->events = EV_NONE;
641	base->reify = 0;
642
643	++base;
644	}
645	}
646
647	void inline_speed
648	fd_event (EV_P_ int fd, int revents)	891	fd_event_nc (EV_P_ int fd, int revents)
649	{	892	{
650	ANFD *anfd = anfds + fd;	893	ANFD *anfd = anfds + fd;
651	ev_io *w;	894	ev_io *w;
652		895
653	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	896	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
657	if (ev)	900	if (ev)
658	ev_feed_event (EV_A_ (W)w, ev);	901	ev_feed_event (EV_A_ (W)w, ev);
659	}	902	}
660	}	903	}
661		904
		905	/* do not submit kernel events for fds that have reify set */
		906	/* because that means they changed while we were polling for new events */
		907	inline_speed void
		908	fd_event (EV_P_ int fd, int revents)
		909	{
		910	ANFD *anfd = anfds + fd;
		911
		912	if (expect_true (!anfd->reify))
		913	fd_event_nc (EV_A_ fd, revents);
		914	}
		915
662	void	916	void
663	ev_feed_fd_event (EV_P_ int fd, int revents)	917	ev_feed_fd_event (EV_P_ int fd, int revents)
664	{	918	{
665	if (fd >= 0 && fd < anfdmax)	919	if (fd >= 0 && fd < anfdmax)
666	fd_event (EV_A_ fd, revents);	920	fd_event_nc (EV_A_ fd, revents);
667	}	921	}
668		922
669	void inline_size	923	/* make sure the external fd watch events are in-sync */
		924	/* with the kernel/libev internal state */
		925	inline_size void
670	fd_reify (EV_P)	926	fd_reify (EV_P)
671	{	927	{
672	int i;	928	int i;
673		929
674	for (i = 0; i < fdchangecnt; ++i)	930	for (i = 0; i < fdchangecnt; ++i)
…		…
683	events |= (unsigned char)w->events;	939	events |= (unsigned char)w->events;
684		940
685	#if EV_SELECT_IS_WINSOCKET	941	#if EV_SELECT_IS_WINSOCKET
686	if (events)	942	if (events)
687	{	943	{
688	unsigned long argp;	944	unsigned long arg;
689	#ifdef EV_FD_TO_WIN32_HANDLE
690	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	945	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
691	#else
692	anfd->handle = _get_osfhandle (fd);
693	#endif
694	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	946	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
695	}	947	}
696	#endif	948	#endif
697		949
698	{	950	{
699	unsigned char o_events = anfd->events;	951	unsigned char o_events = anfd->events;
700	unsigned char o_reify = anfd->reify;	952	unsigned char o_reify = anfd->reify;
701		953
702	anfd->reify = 0;	954	anfd->reify = 0;
703	anfd->events = events;	955	anfd->events = events;
704		956
705	if (o_events != events || o_reify & EV_IOFDSET)	957	if (o_events != events || o_reify & EV__IOFDSET)
706	backend_modify (EV_A_ fd, o_events, events);	958	backend_modify (EV_A_ fd, o_events, events);
707	}	959	}
708	}	960	}
709		961
710	fdchangecnt = 0;	962	fdchangecnt = 0;
711	}	963	}
712		964
713	void inline_size	965	/* something about the given fd changed */
		966	inline_size void
714	fd_change (EV_P_ int fd, int flags)	967	fd_change (EV_P_ int fd, int flags)
715	{	968	{
716	unsigned char reify = anfds [fd].reify;	969	unsigned char reify = anfds [fd].reify;
717	anfds [fd].reify |= flags;	970	anfds [fd].reify |= flags;
718		971
…		…
722	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	975	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
723	fdchanges [fdchangecnt - 1] = fd;	976	fdchanges [fdchangecnt - 1] = fd;
724	}	977	}
725	}	978	}
726		979
727	void inline_speed	980	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		981	inline_speed void
728	fd_kill (EV_P_ int fd)	982	fd_kill (EV_P_ int fd)
729	{	983	{
730	ev_io *w;	984	ev_io *w;
731		985
732	while ((w = (ev_io *)anfds [fd].head))	986	while ((w = (ev_io *)anfds [fd].head))
…		…
734	ev_io_stop (EV_A_ w);	988	ev_io_stop (EV_A_ w);
735	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	989	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
736	}	990	}
737	}	991	}
738		992
739	int inline_size	993	/* check whether the given fd is atcually valid, for error recovery */
		994	inline_size int
740	fd_valid (int fd)	995	fd_valid (int fd)
741	{	996	{
742	#ifdef _WIN32	997	#ifdef _WIN32
743	return _get_osfhandle (fd) != -1;	998	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
744	#else	999	#else
745	return fcntl (fd, F_GETFD) != -1;	1000	return fcntl (fd, F_GETFD) != -1;
746	#endif	1001	#endif
747	}	1002	}
748		1003
…		…
752	{	1007	{
753	int fd;	1008	int fd;
754		1009
755	for (fd = 0; fd < anfdmax; ++fd)	1010	for (fd = 0; fd < anfdmax; ++fd)
756	if (anfds [fd].events)	1011	if (anfds [fd].events)
757	if (!fd_valid (fd) == -1 && errno == EBADF)	1012	if (!fd_valid (fd) && errno == EBADF)
758	fd_kill (EV_A_ fd);	1013	fd_kill (EV_A_ fd);
759	}	1014	}
760		1015
761	/* called on ENOMEM in select/poll to kill some fds and retry */	1016	/* called on ENOMEM in select/poll to kill some fds and retry */
762	static void noinline	1017	static void noinline
…		…
766		1021
767	for (fd = anfdmax; fd--; )	1022	for (fd = anfdmax; fd--; )
768	if (anfds [fd].events)	1023	if (anfds [fd].events)
769	{	1024	{
770	fd_kill (EV_A_ fd);	1025	fd_kill (EV_A_ fd);
771	return;	1026	break;
772	}	1027	}
773	}	1028	}
774		1029
775	/* usually called after fork if backend needs to re-arm all fds from scratch */	1030	/* usually called after fork if backend needs to re-arm all fds from scratch */
776	static void noinline	1031	static void noinline
…		…
780		1035
781	for (fd = 0; fd < anfdmax; ++fd)	1036	for (fd = 0; fd < anfdmax; ++fd)
782	if (anfds [fd].events)	1037	if (anfds [fd].events)
783	{	1038	{
784	anfds [fd].events = 0;	1039	anfds [fd].events = 0;
		1040	anfds [fd].emask = 0;
785	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1041	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
786	}	1042	}
787	}	1043	}
788		1044
789	/*****************************************************************************/	1045	/*****************************************************************************/
790		1046
…		…
802	*/	1058	*/
803	#if EV_USE_4HEAP	1059	#if EV_USE_4HEAP
804		1060
805	#define DHEAP 4	1061	#define DHEAP 4
806	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1062	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
807		1063	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
808	/* towards the root */	1064	#define UPHEAP_DONE(p,k) ((p) == (k))
809	void inline_speed
810	upheap (ANHE *heap, int k)
811	{
812	ANHE he = heap [k];
813
814	for (;;)
815	{
816	int p = ((k - HEAP0 - 1) / DHEAP) + HEAP0;
817
818	if (p == k || ANHE_at (heap [p]) <= ANHE_at (he))
819	break;
820
821	heap [k] = heap [p];
822	ev_active (ANHE_w (heap [k])) = k;
823	k = p;
824	}
825
826	ev_active (ANHE_w (he)) = k;
827	heap [k] = he;
828	}
829		1065
830	/* away from the root */	1066	/* away from the root */
831	void inline_speed	1067	inline_speed void
832	downheap (ANHE *heap, int N, int k)	1068	downheap (ANHE *heap, int N, int k)
833	{	1069	{
834	ANHE he = heap [k];	1070	ANHE he = heap [k];
835	ANHE *E = heap + N + HEAP0;	1071	ANHE *E = heap + N + HEAP0;
836		1072
837	for (;;)	1073	for (;;)
838	{	1074	{
839	ev_tstamp minat;	1075	ev_tstamp minat;
840	ANHE *minpos;	1076	ANHE *minpos;
841	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0;	1077	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
842		1078
843	// find minimum child	1079	/* find minimum child */
844	if (expect_true (pos + DHEAP - 1 < E))	1080	if (expect_true (pos + DHEAP - 1 < E))
845	{	1081	{
846	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));	1082	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
847	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));	1083	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
848	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));	1084	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
…		…
859	break;	1095	break;
860		1096
861	if (ANHE_at (he) <= minat)	1097	if (ANHE_at (he) <= minat)
862	break;	1098	break;
863		1099
		1100	heap [k] = *minpos;
864	ev_active (ANHE_w (*minpos)) = k;	1101	ev_active (ANHE_w (*minpos)) = k;
865	heap [k] = *minpos;
866		1102
867	k = minpos - heap;	1103	k = minpos - heap;
868	}	1104	}
869		1105
		1106	heap [k] = he;
870	ev_active (ANHE_w (he)) = k;	1107	ev_active (ANHE_w (he)) = k;
871	heap [k] = he;
872	}	1108	}
873		1109
874	#else // 4HEAP	1110	#else /* 4HEAP */
875		1111
876	#define HEAP0 1	1112	#define HEAP0 1
		1113	#define HPARENT(k) ((k) >> 1)
		1114	#define UPHEAP_DONE(p,k) (!(p))
877		1115
878	/* towards the root */	1116	/* away from the root */
879	void inline_speed	1117	inline_speed void
880	upheap (ANHE *heap, int k)	1118	downheap (ANHE *heap, int N, int k)
881	{	1119	{
882	ANHE he = heap [k];	1120	ANHE he = heap [k];
883		1121
884	for (;;)	1122	for (;;)
885	{	1123	{
886	int p = k >> 1;	1124	int c = k << 1;
887		1125
888	/* maybe we could use a dummy element at heap [0]? */	1126	if (c >= N + HEAP0)
889	if (!p || ANHE_at (heap [p]) <= ANHE_at (he))
890	break;	1127	break;
891		1128
892	heap [k] = heap [p];
893	ev_active (ANHE_w (heap [k])) = k;
894	k = p;
895	}
896
897	heap [k] = he;
898	ev_active (ANHE_w (heap [k])) = k;
899	}
900
901	/* away from the root */
902	void inline_speed
903	downheap (ANHE *heap, int N, int k)
904	{
905	ANHE he = heap [k];
906
907	for (;;)
908	{
909	int c = k << 1;
910
911	if (c > N)
912	break;
913
914	c += c + 1 < N && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1129	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
915	? 1 : 0;	1130	? 1 : 0;
916		1131
917	if (ANHE_at (he) <= ANHE_at (heap [c]))	1132	if (ANHE_at (he) <= ANHE_at (heap [c]))
918	break;	1133	break;
919		1134
…		…
926	heap [k] = he;	1141	heap [k] = he;
927	ev_active (ANHE_w (he)) = k;	1142	ev_active (ANHE_w (he)) = k;
928	}	1143	}
929	#endif	1144	#endif
930		1145
931	void inline_size	1146	/* towards the root */
		1147	inline_speed void
		1148	upheap (ANHE *heap, int k)
		1149	{
		1150	ANHE he = heap [k];
		1151
		1152	for (;;)
		1153	{
		1154	int p = HPARENT (k);
		1155
		1156	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1157	break;
		1158
		1159	heap [k] = heap [p];
		1160	ev_active (ANHE_w (heap [k])) = k;
		1161	k = p;
		1162	}
		1163
		1164	heap [k] = he;
		1165	ev_active (ANHE_w (he)) = k;
		1166	}
		1167
		1168	/* move an element suitably so it is in a correct place */
		1169	inline_size void
932	adjustheap (ANHE *heap, int N, int k)	1170	adjustheap (ANHE *heap, int N, int k)
933	{	1171	{
		1172	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
934	upheap (heap, k);	1173	upheap (heap, k);
		1174	else
935	downheap (heap, N, k);	1175	downheap (heap, N, k);
		1176	}
		1177
		1178	/* rebuild the heap: this function is used only once and executed rarely */
		1179	inline_size void
		1180	reheap (ANHE *heap, int N)
		1181	{
		1182	int i;
		1183
		1184	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1185	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1186	for (i = 0; i < N; ++i)
		1187	upheap (heap, i + HEAP0);
936	}	1188	}
937		1189
938	/*****************************************************************************/	1190	/*****************************************************************************/
939		1191
		1192	/* associate signal watchers to a signal signal */
940	typedef struct	1193	typedef struct
941	{	1194	{
		1195	EV_ATOMIC_T pending;
		1196	#if EV_MULTIPLICITY
		1197	EV_P;
		1198	#endif
942	WL head;	1199	WL head;
943	EV_ATOMIC_T gotsig;
944	} ANSIG;	1200	} ANSIG;
945		1201
946	static ANSIG *signals;	1202	static ANSIG signals [EV_NSIG - 1];
947	static int signalmax;
948
949	static EV_ATOMIC_T gotsig;
950
951	void inline_size
952	signals_init (ANSIG *base, int count)
953	{
954	while (count--)
955	{
956	base->head = 0;
957	base->gotsig = 0;
958
959	++base;
960	}
961	}
962		1203
963	/*****************************************************************************/	1204	/*****************************************************************************/
964		1205
965	void inline_speed	1206	/* used to prepare libev internal fd's */
		1207	/* this is not fork-safe */
		1208	inline_speed void
966	fd_intern (int fd)	1209	fd_intern (int fd)
967	{	1210	{
968	#ifdef _WIN32	1211	#ifdef _WIN32
969	int arg = 1;	1212	unsigned long arg = 1;
970	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1213	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
971	#else	1214	#else
972	fcntl (fd, F_SETFD, FD_CLOEXEC);	1215	fcntl (fd, F_SETFD, FD_CLOEXEC);
973	fcntl (fd, F_SETFL, O_NONBLOCK);	1216	fcntl (fd, F_SETFL, O_NONBLOCK);
974	#endif	1217	#endif
975	}	1218	}
976		1219
977	static void noinline	1220	static void noinline
978	evpipe_init (EV_P)	1221	evpipe_init (EV_P)
979	{	1222	{
980	if (!ev_is_active (&pipeev))	1223	if (!ev_is_active (&pipe_w))
981	{	1224	{
982	#if EV_USE_EVENTFD	1225	#if EV_USE_EVENTFD
		1226	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1227	if (evfd < 0 && errno == EINVAL)
983	if ((evfd = eventfd (0, 0)) >= 0)	1228	evfd = eventfd (0, 0);
		1229
		1230	if (evfd >= 0)
984	{	1231	{
985	evpipe [0] = -1;	1232	evpipe [0] = -1;
986	fd_intern (evfd);	1233	fd_intern (evfd); /* doing it twice doesn't hurt */
987	ev_io_set (&pipeev, evfd, EV_READ);	1234	ev_io_set (&pipe_w, evfd, EV_READ);
988	}	1235	}
989	else	1236	else
990	#endif	1237	#endif
991	{	1238	{
992	while (pipe (evpipe))	1239	while (pipe (evpipe))
993	syserr ("(libev) error creating signal/async pipe");	1240	ev_syserr ("(libev) error creating signal/async pipe");
994		1241
995	fd_intern (evpipe [0]);	1242	fd_intern (evpipe [0]);
996	fd_intern (evpipe [1]);	1243	fd_intern (evpipe [1]);
997	ev_io_set (&pipeev, evpipe [0], EV_READ);	1244	ev_io_set (&pipe_w, evpipe [0], EV_READ);
998	}	1245	}
999		1246
1000	ev_io_start (EV_A_ &pipeev);	1247	ev_io_start (EV_A_ &pipe_w);
1001	ev_unref (EV_A); /* watcher should not keep loop alive */	1248	ev_unref (EV_A); /* watcher should not keep loop alive */
1002	}	1249	}
1003	}	1250	}
1004		1251
1005	void inline_size	1252	inline_size void
1006	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1253	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1007	{	1254	{
1008	if (!*flag)	1255	if (!*flag)
1009	{	1256	{
1010	int old_errno = errno; /* save errno because write might clobber it */	1257	int old_errno = errno; /* save errno because write might clobber it */
…		…
1023		1270
1024	errno = old_errno;	1271	errno = old_errno;
1025	}	1272	}
1026	}	1273	}
1027		1274
		1275	/* called whenever the libev signal pipe */
		1276	/* got some events (signal, async) */
1028	static void	1277	static void
1029	pipecb (EV_P_ ev_io *iow, int revents)	1278	pipecb (EV_P_ ev_io *iow, int revents)
1030	{	1279	{
		1280	int i;
		1281
1031	#if EV_USE_EVENTFD	1282	#if EV_USE_EVENTFD
1032	if (evfd >= 0)	1283	if (evfd >= 0)
1033	{	1284	{
1034	uint64_t counter;	1285	uint64_t counter;
1035	read (evfd, &counter, sizeof (uint64_t));	1286	read (evfd, &counter, sizeof (uint64_t));
…		…
1039	{	1290	{
1040	char dummy;	1291	char dummy;
1041	read (evpipe [0], &dummy, 1);	1292	read (evpipe [0], &dummy, 1);
1042	}	1293	}
1043		1294
1044	if (gotsig && ev_is_default_loop (EV_A))	1295	if (sig_pending)
1045	{	1296	{
1046	int signum;	1297	sig_pending = 0;
1047	gotsig = 0;
1048		1298
1049	for (signum = signalmax; signum--; )	1299	for (i = EV_NSIG - 1; i--; )
1050	if (signals [signum].gotsig)	1300	if (expect_false (signals [i].pending))
1051	ev_feed_signal_event (EV_A_ signum + 1);	1301	ev_feed_signal_event (EV_A_ i + 1);
1052	}	1302	}
1053		1303
1054	#if EV_ASYNC_ENABLE	1304	#if EV_ASYNC_ENABLE
1055	if (gotasync)	1305	if (async_pending)
1056	{	1306	{
1057	int i;	1307	async_pending = 0;
1058	gotasync = 0;
1059		1308
1060	for (i = asynccnt; i--; )	1309	for (i = asynccnt; i--; )
1061	if (asyncs [i]->sent)	1310	if (asyncs [i]->sent)
1062	{	1311	{
1063	asyncs [i]->sent = 0;	1312	asyncs [i]->sent = 0;
…		…
1071		1320
1072	static void	1321	static void
1073	ev_sighandler (int signum)	1322	ev_sighandler (int signum)
1074	{	1323	{
1075	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1076	struct ev_loop *loop = &default_loop_struct;	1325	EV_P = signals [signum - 1].loop;
1077	#endif	1326	#endif
1078		1327
1079	#if _WIN32	1328	#ifdef _WIN32
1080	signal (signum, ev_sighandler);	1329	signal (signum, ev_sighandler);
1081	#endif	1330	#endif
1082		1331
1083	signals [signum - 1].gotsig = 1;	1332	signals [signum - 1].pending = 1;
1084	evpipe_write (EV_A_ &gotsig);	1333	evpipe_write (EV_A_ &sig_pending);
1085	}	1334	}
1086		1335
1087	void noinline	1336	void noinline
1088	ev_feed_signal_event (EV_P_ int signum)	1337	ev_feed_signal_event (EV_P_ int signum)
1089	{	1338	{
1090	WL w;	1339	WL w;
1091		1340
		1341	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1342	return;
		1343
		1344	--signum;
		1345
1092	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
1093	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1347	/* it is permissible to try to feed a signal to the wrong loop */
1094	#endif	1348	/* or, likely more useful, feeding a signal nobody is waiting for */
1095		1349
1096	--signum;	1350	if (expect_false (signals [signum].loop != EV_A))
1097
1098	if (signum < 0 || signum >= signalmax)
1099	return;	1351	return;
		1352	#endif
1100		1353
1101	signals [signum].gotsig = 0;	1354	signals [signum].pending = 0;
1102		1355
1103	for (w = signals [signum].head; w; w = w->next)	1356	for (w = signals [signum].head; w; w = w->next)
1104	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1357	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1105	}	1358	}
1106		1359
		1360	#if EV_USE_SIGNALFD
		1361	static void
		1362	sigfdcb (EV_P_ ev_io *iow, int revents)
		1363	{
		1364	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1365
		1366	for (;;)
		1367	{
		1368	ssize_t res = read (sigfd, si, sizeof (si));
		1369
		1370	/* not ISO-C, as res might be -1, but works with SuS */
		1371	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1372	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1373
		1374	if (res < (ssize_t)sizeof (si))
		1375	break;
		1376	}
		1377	}
		1378	#endif
		1379
1107	/*****************************************************************************/	1380	/*****************************************************************************/
1108		1381
1109	static WL childs [EV_PID_HASHSIZE];	1382	static WL childs [EV_PID_HASHSIZE];
1110		1383
1111	#ifndef _WIN32	1384	#ifndef _WIN32
…		…
1114		1387
1115	#ifndef WIFCONTINUED	1388	#ifndef WIFCONTINUED
1116	# define WIFCONTINUED(status) 0	1389	# define WIFCONTINUED(status) 0
1117	#endif	1390	#endif
1118		1391
1119	void inline_speed	1392	/* handle a single child status event */
		1393	inline_speed void
1120	child_reap (EV_P_ int chain, int pid, int status)	1394	child_reap (EV_P_ int chain, int pid, int status)
1121	{	1395	{
1122	ev_child *w;	1396	ev_child *w;
1123	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1397	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1124		1398
…		…
1137		1411
1138	#ifndef WCONTINUED	1412	#ifndef WCONTINUED
1139	# define WCONTINUED 0	1413	# define WCONTINUED 0
1140	#endif	1414	#endif
1141		1415
		1416	/* called on sigchld etc., calls waitpid */
1142	static void	1417	static void
1143	childcb (EV_P_ ev_signal *sw, int revents)	1418	childcb (EV_P_ ev_signal *sw, int revents)
1144	{	1419	{
1145	int pid, status;	1420	int pid, status;
1146		1421
…		…
1227	/* kqueue is borked on everything but netbsd apparently */	1502	/* kqueue is borked on everything but netbsd apparently */
1228	/* it usually doesn't work correctly on anything but sockets and pipes */	1503	/* it usually doesn't work correctly on anything but sockets and pipes */
1229	flags &= ~EVBACKEND_KQUEUE;	1504	flags &= ~EVBACKEND_KQUEUE;
1230	#endif	1505	#endif
1231	#ifdef __APPLE__	1506	#ifdef __APPLE__
1232	// flags &= ~EVBACKEND_KQUEUE; for documentation	1507	/* only select works correctly on that "unix-certified" platform */
1233	flags &= ~EVBACKEND_POLL;	1508	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1509	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1234	#endif	1510	#endif
1235		1511
1236	return flags;	1512	return flags;
1237	}	1513	}
1238		1514
…		…
1252	ev_backend (EV_P)	1528	ev_backend (EV_P)
1253	{	1529	{
1254	return backend;	1530	return backend;
1255	}	1531	}
1256		1532
		1533	#if EV_MINIMAL < 2
1257	unsigned int	1534	unsigned int
1258	ev_loop_count (EV_P)	1535	ev_loop_count (EV_P)
1259	{	1536	{
1260	return loop_count;	1537	return loop_count;
1261	}	1538	}
1262		1539
		1540	unsigned int
		1541	ev_loop_depth (EV_P)
		1542	{
		1543	return loop_depth;
		1544	}
		1545
1263	void	1546	void
1264	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1547	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1265	{	1548	{
1266	io_blocktime = interval;	1549	io_blocktime = interval;
1267	}	1550	}
…		…
1270	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1553	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1271	{	1554	{
1272	timeout_blocktime = interval;	1555	timeout_blocktime = interval;
1273	}	1556	}
1274		1557
		1558	void
		1559	ev_set_userdata (EV_P_ void *data)
		1560	{
		1561	userdata = data;
		1562	}
		1563
		1564	void *
		1565	ev_userdata (EV_P)
		1566	{
		1567	return userdata;
		1568	}
		1569
		1570	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1571	{
		1572	invoke_cb = invoke_pending_cb;
		1573	}
		1574
		1575	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1576	{
		1577	release_cb = release;
		1578	acquire_cb = acquire;
		1579	}
		1580	#endif
		1581
		1582	/* initialise a loop structure, must be zero-initialised */
1275	static void noinline	1583	static void noinline
1276	loop_init (EV_P_ unsigned int flags)	1584	loop_init (EV_P_ unsigned int flags)
1277	{	1585	{
1278	if (!backend)	1586	if (!backend)
1279	{	1587	{
		1588	#if EV_USE_REALTIME
		1589	if (!have_realtime)
		1590	{
		1591	struct timespec ts;
		1592
		1593	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1594	have_realtime = 1;
		1595	}
		1596	#endif
		1597
1280	#if EV_USE_MONOTONIC	1598	#if EV_USE_MONOTONIC
		1599	if (!have_monotonic)
1281	{	1600	{
1282	struct timespec ts;	1601	struct timespec ts;
		1602
1283	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1603	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1284	have_monotonic = 1;	1604	have_monotonic = 1;
1285	}	1605	}
1286	#endif	1606	#endif
		1607
		1608	/* pid check not overridable via env */
		1609	#ifndef _WIN32
		1610	if (flags & EVFLAG_FORKCHECK)
		1611	curpid = getpid ();
		1612	#endif
		1613
		1614	if (!(flags & EVFLAG_NOENV)
		1615	&& !enable_secure ()
		1616	&& getenv ("LIBEV_FLAGS"))
		1617	flags = atoi (getenv ("LIBEV_FLAGS"));
1287		1618
1288	ev_rt_now = ev_time ();	1619	ev_rt_now = ev_time ();
1289	mn_now = get_clock ();	1620	mn_now = get_clock ();
1290	now_floor = mn_now;	1621	now_floor = mn_now;
1291	rtmn_diff = ev_rt_now - mn_now;	1622	rtmn_diff = ev_rt_now - mn_now;
		1623	#if EV_MINIMAL < 2
		1624	invoke_cb = ev_invoke_pending;
		1625	#endif
1292		1626
1293	io_blocktime = 0.;	1627	io_blocktime = 0.;
1294	timeout_blocktime = 0.;	1628	timeout_blocktime = 0.;
1295	backend = 0;	1629	backend = 0;
1296	backend_fd = -1;	1630	backend_fd = -1;
1297	gotasync = 0;	1631	sig_pending = 0;
		1632	#if EV_ASYNC_ENABLE
		1633	async_pending = 0;
		1634	#endif
1298	#if EV_USE_INOTIFY	1635	#if EV_USE_INOTIFY
1299	fs_fd = -2;	1636	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1300	#endif	1637	#endif
1301		1638	#if EV_USE_SIGNALFD
1302	/* pid check not overridable via env */	1639	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1303	#ifndef _WIN32
1304	if (flags & EVFLAG_FORKCHECK)
1305	curpid = getpid ();
1306	#endif	1640	#endif
1307
1308	if (!(flags & EVFLAG_NOENV)
1309	&& !enable_secure ()
1310	&& getenv ("LIBEV_FLAGS"))
1311	flags = atoi (getenv ("LIBEV_FLAGS"));
1312		1641
1313	if (!(flags & 0x0000ffffU))	1642	if (!(flags & 0x0000ffffU))
1314	flags |= ev_recommended_backends ();	1643	flags |= ev_recommended_backends ();
1315		1644
1316	#if EV_USE_PORT	1645	#if EV_USE_PORT
…		…
1327	#endif	1656	#endif
1328	#if EV_USE_SELECT	1657	#if EV_USE_SELECT
1329	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1658	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1330	#endif	1659	#endif
1331		1660
		1661	ev_prepare_init (&pending_w, pendingcb);
		1662
1332	ev_init (&pipeev, pipecb);	1663	ev_init (&pipe_w, pipecb);
1333	ev_set_priority (&pipeev, EV_MAXPRI);	1664	ev_set_priority (&pipe_w, EV_MAXPRI);
1334	}	1665	}
1335	}	1666	}
1336		1667
		1668	/* free up a loop structure */
1337	static void noinline	1669	static void noinline
1338	loop_destroy (EV_P)	1670	loop_destroy (EV_P)
1339	{	1671	{
1340	int i;	1672	int i;
1341		1673
1342	if (ev_is_active (&pipeev))	1674	if (ev_is_active (&pipe_w))
1343	{	1675	{
1344	ev_ref (EV_A); /* signal watcher */	1676	/*ev_ref (EV_A);*/
1345	ev_io_stop (EV_A_ &pipeev);	1677	/*ev_io_stop (EV_A_ &pipe_w);*/
1346		1678
1347	#if EV_USE_EVENTFD	1679	#if EV_USE_EVENTFD
1348	if (evfd >= 0)	1680	if (evfd >= 0)
1349	close (evfd);	1681	close (evfd);
1350	#endif	1682	#endif
1351		1683
1352	if (evpipe [0] >= 0)	1684	if (evpipe [0] >= 0)
1353	{	1685	{
1354	close (evpipe [0]);	1686	EV_WIN32_CLOSE_FD (evpipe [0]);
1355	close (evpipe [1]);	1687	EV_WIN32_CLOSE_FD (evpipe [1]);
1356	}	1688	}
1357	}	1689	}
		1690
		1691	#if EV_USE_SIGNALFD
		1692	if (ev_is_active (&sigfd_w))
		1693	close (sigfd);
		1694	#endif
1358		1695
1359	#if EV_USE_INOTIFY	1696	#if EV_USE_INOTIFY
1360	if (fs_fd >= 0)	1697	if (fs_fd >= 0)
1361	close (fs_fd);	1698	close (fs_fd);
1362	#endif	1699	#endif
…		…
1386	#if EV_IDLE_ENABLE	1723	#if EV_IDLE_ENABLE
1387	array_free (idle, [i]);	1724	array_free (idle, [i]);
1388	#endif	1725	#endif
1389	}	1726	}
1390		1727
1391	ev_free (anfds); anfdmax = 0;	1728	ev_free (anfds); anfds = 0; anfdmax = 0;
1392		1729
1393	/* have to use the microsoft-never-gets-it-right macro */	1730	/* have to use the microsoft-never-gets-it-right macro */
		1731	array_free (rfeed, EMPTY);
1394	array_free (fdchange, EMPTY);	1732	array_free (fdchange, EMPTY);
1395	array_free (timer, EMPTY);	1733	array_free (timer, EMPTY);
1396	#if EV_PERIODIC_ENABLE	1734	#if EV_PERIODIC_ENABLE
1397	array_free (periodic, EMPTY);	1735	array_free (periodic, EMPTY);
1398	#endif	1736	#endif
…		…
1407		1745
1408	backend = 0;	1746	backend = 0;
1409	}	1747	}
1410		1748
1411	#if EV_USE_INOTIFY	1749	#if EV_USE_INOTIFY
1412	void inline_size infy_fork (EV_P);	1750	inline_size void infy_fork (EV_P);
1413	#endif	1751	#endif
1414		1752
1415	void inline_size	1753	inline_size void
1416	loop_fork (EV_P)	1754	loop_fork (EV_P)
1417	{	1755	{
1418	#if EV_USE_PORT	1756	#if EV_USE_PORT
1419	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	1757	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1420	#endif	1758	#endif
…		…
1426	#endif	1764	#endif
1427	#if EV_USE_INOTIFY	1765	#if EV_USE_INOTIFY
1428	infy_fork (EV_A);	1766	infy_fork (EV_A);
1429	#endif	1767	#endif
1430		1768
1431	if (ev_is_active (&pipeev))	1769	if (ev_is_active (&pipe_w))
1432	{	1770	{
1433	/* this "locks" the handlers against writing to the pipe */	1771	/* this "locks" the handlers against writing to the pipe */
1434	/* while we modify the fd vars */	1772	/* while we modify the fd vars */
1435	gotsig = 1;	1773	sig_pending = 1;
1436	#if EV_ASYNC_ENABLE	1774	#if EV_ASYNC_ENABLE
1437	gotasync = 1;	1775	async_pending = 1;
1438	#endif	1776	#endif
1439		1777
1440	ev_ref (EV_A);	1778	ev_ref (EV_A);
1441	ev_io_stop (EV_A_ &pipeev);	1779	ev_io_stop (EV_A_ &pipe_w);
1442		1780
1443	#if EV_USE_EVENTFD	1781	#if EV_USE_EVENTFD
1444	if (evfd >= 0)	1782	if (evfd >= 0)
1445	close (evfd);	1783	close (evfd);
1446	#endif	1784	#endif
1447		1785
1448	if (evpipe [0] >= 0)	1786	if (evpipe [0] >= 0)
1449	{	1787	{
1450	close (evpipe [0]);	1788	EV_WIN32_CLOSE_FD (evpipe [0]);
1451	close (evpipe [1]);	1789	EV_WIN32_CLOSE_FD (evpipe [1]);
1452	}	1790	}
1453		1791
1454	evpipe_init (EV_A);	1792	evpipe_init (EV_A);
1455	/* now iterate over everything, in case we missed something */	1793	/* now iterate over everything, in case we missed something */
1456	pipecb (EV_A_ &pipeev, EV_READ);	1794	pipecb (EV_A_ &pipe_w, EV_READ);
1457	}	1795	}
1458		1796
1459	postfork = 0;	1797	postfork = 0;
1460	}	1798	}
1461		1799
1462	#if EV_MULTIPLICITY	1800	#if EV_MULTIPLICITY
		1801
1463	struct ev_loop *	1802	struct ev_loop *
1464	ev_loop_new (unsigned int flags)	1803	ev_loop_new (unsigned int flags)
1465	{	1804	{
1466	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1805	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1467		1806
1468	memset (loop, 0, sizeof (struct ev_loop));	1807	memset (EV_A, 0, sizeof (struct ev_loop));
1469
1470	loop_init (EV_A_ flags);	1808	loop_init (EV_A_ flags);
1471		1809
1472	if (ev_backend (EV_A))	1810	if (ev_backend (EV_A))
1473	return loop;	1811	return EV_A;
1474		1812
1475	return 0;	1813	return 0;
1476	}	1814	}
1477		1815
1478	void	1816	void
…		…
1484		1822
1485	void	1823	void
1486	ev_loop_fork (EV_P)	1824	ev_loop_fork (EV_P)
1487	{	1825	{
1488	postfork = 1; /* must be in line with ev_default_fork */	1826	postfork = 1; /* must be in line with ev_default_fork */
		1827	}
		1828	#endif /* multiplicity */
		1829
		1830	#if EV_VERIFY
		1831	static void noinline
		1832	verify_watcher (EV_P_ W w)
		1833	{
		1834	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1835
		1836	if (w->pending)
		1837	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1838	}
		1839
		1840	static void noinline
		1841	verify_heap (EV_P_ ANHE *heap, int N)
		1842	{
		1843	int i;
		1844
		1845	for (i = HEAP0; i < N + HEAP0; ++i)
		1846	{
		1847	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1848	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1849	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1850
		1851	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1852	}
		1853	}
		1854
		1855	static void noinline
		1856	array_verify (EV_P_ W *ws, int cnt)
		1857	{
		1858	while (cnt--)
		1859	{
		1860	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1861	verify_watcher (EV_A_ ws [cnt]);
		1862	}
		1863	}
		1864	#endif
		1865
		1866	#if EV_MINIMAL < 2
		1867	void
		1868	ev_loop_verify (EV_P)
		1869	{
		1870	#if EV_VERIFY
		1871	int i;
		1872	WL w;
		1873
		1874	assert (activecnt >= -1);
		1875
		1876	assert (fdchangemax >= fdchangecnt);
		1877	for (i = 0; i < fdchangecnt; ++i)
		1878	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1879
		1880	assert (anfdmax >= 0);
		1881	for (i = 0; i < anfdmax; ++i)
		1882	for (w = anfds [i].head; w; w = w->next)
		1883	{
		1884	verify_watcher (EV_A_ (W)w);
		1885	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1886	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1887	}
		1888
		1889	assert (timermax >= timercnt);
		1890	verify_heap (EV_A_ timers, timercnt);
		1891
		1892	#if EV_PERIODIC_ENABLE
		1893	assert (periodicmax >= periodiccnt);
		1894	verify_heap (EV_A_ periodics, periodiccnt);
		1895	#endif
		1896
		1897	for (i = NUMPRI; i--; )
		1898	{
		1899	assert (pendingmax [i] >= pendingcnt [i]);
		1900	#if EV_IDLE_ENABLE
		1901	assert (idleall >= 0);
		1902	assert (idlemax [i] >= idlecnt [i]);
		1903	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1904	#endif
		1905	}
		1906
		1907	#if EV_FORK_ENABLE
		1908	assert (forkmax >= forkcnt);
		1909	array_verify (EV_A_ (W *)forks, forkcnt);
		1910	#endif
		1911
		1912	#if EV_ASYNC_ENABLE
		1913	assert (asyncmax >= asynccnt);
		1914	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1915	#endif
		1916
		1917	assert (preparemax >= preparecnt);
		1918	array_verify (EV_A_ (W *)prepares, preparecnt);
		1919
		1920	assert (checkmax >= checkcnt);
		1921	array_verify (EV_A_ (W *)checks, checkcnt);
		1922
		1923	# if 0
		1924	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1925	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1926	# endif
		1927	#endif
1489	}	1928	}
1490	#endif	1929	#endif
1491		1930
1492	#if EV_MULTIPLICITY	1931	#if EV_MULTIPLICITY
1493	struct ev_loop *	1932	struct ev_loop *
…		…
1498	#endif	1937	#endif
1499	{	1938	{
1500	if (!ev_default_loop_ptr)	1939	if (!ev_default_loop_ptr)
1501	{	1940	{
1502	#if EV_MULTIPLICITY	1941	#if EV_MULTIPLICITY
1503	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1942	EV_P = ev_default_loop_ptr = &default_loop_struct;
1504	#else	1943	#else
1505	ev_default_loop_ptr = 1;	1944	ev_default_loop_ptr = 1;
1506	#endif	1945	#endif
1507		1946
1508	loop_init (EV_A_ flags);	1947	loop_init (EV_A_ flags);
…		…
1525		1964
1526	void	1965	void
1527	ev_default_destroy (void)	1966	ev_default_destroy (void)
1528	{	1967	{
1529	#if EV_MULTIPLICITY	1968	#if EV_MULTIPLICITY
1530	struct ev_loop *loop = ev_default_loop_ptr;	1969	EV_P = ev_default_loop_ptr;
1531	#endif	1970	#endif
		1971
		1972	ev_default_loop_ptr = 0;
1532		1973
1533	#ifndef _WIN32	1974	#ifndef _WIN32
1534	ev_ref (EV_A); /* child watcher */	1975	ev_ref (EV_A); /* child watcher */
1535	ev_signal_stop (EV_A_ &childev);	1976	ev_signal_stop (EV_A_ &childev);
1536	#endif	1977	#endif
…		…
1540		1981
1541	void	1982	void
1542	ev_default_fork (void)	1983	ev_default_fork (void)
1543	{	1984	{
1544	#if EV_MULTIPLICITY	1985	#if EV_MULTIPLICITY
1545	struct ev_loop *loop = ev_default_loop_ptr;	1986	EV_P = ev_default_loop_ptr;
1546	#endif	1987	#endif
1547		1988
1548	if (backend)
1549	postfork = 1; /* must be in line with ev_loop_fork */	1989	postfork = 1; /* must be in line with ev_loop_fork */
1550	}	1990	}
1551		1991
1552	/*****************************************************************************/	1992	/*****************************************************************************/
1553		1993
1554	void	1994	void
1555	ev_invoke (EV_P_ void *w, int revents)	1995	ev_invoke (EV_P_ void *w, int revents)
1556	{	1996	{
1557	EV_CB_INVOKE ((W)w, revents);	1997	EV_CB_INVOKE ((W)w, revents);
1558	}	1998	}
1559		1999
1560	void inline_speed	2000	unsigned int
1561	call_pending (EV_P)	2001	ev_pending_count (EV_P)
		2002	{
		2003	int pri;
		2004	unsigned int count = 0;
		2005
		2006	for (pri = NUMPRI; pri--; )
		2007	count += pendingcnt [pri];
		2008
		2009	return count;
		2010	}
		2011
		2012	void noinline
		2013	ev_invoke_pending (EV_P)
1562	{	2014	{
1563	int pri;	2015	int pri;
1564		2016
1565	for (pri = NUMPRI; pri--; )	2017	for (pri = NUMPRI; pri--; )
1566	while (pendingcnt [pri])	2018	while (pendingcnt [pri])
1567	{	2019	{
1568	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2020	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1569		2021
1570	if (expect_true (p->w))
1571	{
1572	/*assert (("non-pending watcher on pending list", p->w->pending));*/	2022	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		2023	/* ^ this is no longer true, as pending_w could be here */
1573		2024
1574	p->w->pending = 0;	2025	p->w->pending = 0;
1575	EV_CB_INVOKE (p->w, p->events);	2026	EV_CB_INVOKE (p->w, p->events);
1576	}	2027	EV_FREQUENT_CHECK;
1577	}	2028	}
1578	}	2029	}
1579		2030
1580	#if EV_IDLE_ENABLE	2031	#if EV_IDLE_ENABLE
1581	void inline_size	2032	/* make idle watchers pending. this handles the "call-idle */
		2033	/* only when higher priorities are idle" logic */
		2034	inline_size void
1582	idle_reify (EV_P)	2035	idle_reify (EV_P)
1583	{	2036	{
1584	if (expect_false (idleall))	2037	if (expect_false (idleall))
1585	{	2038	{
1586	int pri;	2039	int pri;
…		…
1598	}	2051	}
1599	}	2052	}
1600	}	2053	}
1601	#endif	2054	#endif
1602		2055
1603	void inline_size	2056	/* make timers pending */
		2057	inline_size void
1604	timers_reify (EV_P)	2058	timers_reify (EV_P)
1605	{	2059	{
		2060	EV_FREQUENT_CHECK;
		2061
1606	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2062	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1607	{	2063	{
1608	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2064	do
1609
1610	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1611
1612	/* first reschedule or stop timer */
1613	if (w->repeat)
1614	{	2065	{
		2066	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2067
		2068	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2069
		2070	/* first reschedule or stop timer */
		2071	if (w->repeat)
		2072	{
1615	ev_at (w) += w->repeat;	2073	ev_at (w) += w->repeat;
1616	if (ev_at (w) < mn_now)	2074	if (ev_at (w) < mn_now)
1617	ev_at (w) = mn_now;	2075	ev_at (w) = mn_now;
1618		2076
1619	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2077	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1620		2078
1621	ANHE_at_set (timers [HEAP0]);	2079	ANHE_at_cache (timers [HEAP0]);
1622	downheap (timers, timercnt, HEAP0);	2080	downheap (timers, timercnt, HEAP0);
		2081	}
		2082	else
		2083	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2084
		2085	EV_FREQUENT_CHECK;
		2086	feed_reverse (EV_A_ (W)w);
1623	}	2087	}
1624	else	2088	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1625	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1626		2089
1627	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);	2090	feed_reverse_done (EV_A_ EV_TIMEOUT);
1628	}	2091	}
1629	}	2092	}
1630		2093
1631	#if EV_PERIODIC_ENABLE	2094	#if EV_PERIODIC_ENABLE
1632	void inline_size	2095	/* make periodics pending */
		2096	inline_size void
1633	periodics_reify (EV_P)	2097	periodics_reify (EV_P)
1634	{	2098	{
		2099	EV_FREQUENT_CHECK;
		2100
1635	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2101	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1636	{	2102	{
1637	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2103	int feed_count = 0;
1638		2104
1639	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2105	do
1640
1641	/* first reschedule or stop timer */
1642	if (w->reschedule_cb)
1643	{	2106	{
		2107	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2108
		2109	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2110
		2111	/* first reschedule or stop timer */
		2112	if (w->reschedule_cb)
		2113	{
1644	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2114	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1645		2115
1646	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2116	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1647		2117
1648	ANHE_at_set (periodics [HEAP0]);	2118	ANHE_at_cache (periodics [HEAP0]);
1649	downheap (periodics, periodiccnt, HEAP0);	2119	downheap (periodics, periodiccnt, HEAP0);
		2120	}
		2121	else if (w->interval)
		2122	{
		2123	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2124	/* if next trigger time is not sufficiently in the future, put it there */
		2125	/* this might happen because of floating point inexactness */
		2126	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		2127	{
		2128	ev_at (w) += w->interval;
		2129
		2130	/* if interval is unreasonably low we might still have a time in the past */
		2131	/* so correct this. this will make the periodic very inexact, but the user */
		2132	/* has effectively asked to get triggered more often than possible */
		2133	if (ev_at (w) < ev_rt_now)
		2134	ev_at (w) = ev_rt_now;
		2135	}
		2136
		2137	ANHE_at_cache (periodics [HEAP0]);
		2138	downheap (periodics, periodiccnt, HEAP0);
		2139	}
		2140	else
		2141	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2142
		2143	EV_FREQUENT_CHECK;
		2144	feed_reverse (EV_A_ (W)w);
1650	}	2145	}
1651	else if (w->interval)	2146	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1652	{
1653	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1654	/* if next trigger time is not sufficiently in the future, put it there */
1655	/* this might happen because of floating point inexactness */
1656	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1657	{
1658	ev_at (w) += w->interval;
1659		2147
1660	/* if interval is unreasonably low we might still have a time in the past */
1661	/* so correct this. this will make the periodic very inexact, but the user */
1662	/* has effectively asked to get triggered more often than possible */
1663	if (ev_at (w) < ev_rt_now)
1664	ev_at (w) = ev_rt_now;
1665	}
1666
1667	ANHE_at_set (periodics [HEAP0]);
1668	downheap (periodics, periodiccnt, HEAP0);
1669	}
1670	else
1671	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1672
1673	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2148	feed_reverse_done (EV_A_ EV_PERIODIC);
1674	}	2149	}
1675	}	2150	}
1676		2151
		2152	/* simply recalculate all periodics */
		2153	/* TODO: maybe ensure that at leats one event happens when jumping forward? */
1677	static void noinline	2154	static void noinline
1678	periodics_reschedule (EV_P)	2155	periodics_reschedule (EV_P)
1679	{	2156	{
1680	int i;	2157	int i;
1681		2158
…		…
1687	if (w->reschedule_cb)	2164	if (w->reschedule_cb)
1688	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2165	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1689	else if (w->interval)	2166	else if (w->interval)
1690	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2167	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1691		2168
1692	ANHE_at_set (periodics [i]);	2169	ANHE_at_cache (periodics [i]);
1693	}	2170	}
1694		2171
1695	/* we don't use floyds algorithm, uphead is simpler and is more cache-efficient */	2172	reheap (periodics, periodiccnt);
1696	/* also, this is easy and corretc for both 2-heaps and 4-heaps */	2173	}
		2174	#endif
		2175
		2176	/* adjust all timers by a given offset */
		2177	static void noinline
		2178	timers_reschedule (EV_P_ ev_tstamp adjust)
		2179	{
		2180	int i;
		2181
1697	for (i = 0; i < periodiccnt; ++i)	2182	for (i = 0; i < timercnt; ++i)
1698	upheap (periodics, i + HEAP0);	2183	{
		2184	ANHE *he = timers + i + HEAP0;
		2185	ANHE_w (*he)->at += adjust;
		2186	ANHE_at_cache (*he);
		2187	}
1699	}	2188	}
1700	#endif
1701		2189
1702	void inline_speed	2190	/* fetch new monotonic and realtime times from the kernel */
		2191	/* also detect if there was a timejump, and act accordingly */
		2192	inline_speed void
1703	time_update (EV_P_ ev_tstamp max_block)	2193	time_update (EV_P_ ev_tstamp max_block)
1704	{	2194	{
1705	int i;
1706
1707	#if EV_USE_MONOTONIC	2195	#if EV_USE_MONOTONIC
1708	if (expect_true (have_monotonic))	2196	if (expect_true (have_monotonic))
1709	{	2197	{
		2198	int i;
1710	ev_tstamp odiff = rtmn_diff;	2199	ev_tstamp odiff = rtmn_diff;
1711		2200
1712	mn_now = get_clock ();	2201	mn_now = get_clock ();
1713		2202
1714	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2203	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1740	ev_rt_now = ev_time ();	2229	ev_rt_now = ev_time ();
1741	mn_now = get_clock ();	2230	mn_now = get_clock ();
1742	now_floor = mn_now;	2231	now_floor = mn_now;
1743	}	2232	}
1744		2233
		2234	/* no timer adjustment, as the monotonic clock doesn't jump */
		2235	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1745	# if EV_PERIODIC_ENABLE	2236	# if EV_PERIODIC_ENABLE
1746	periodics_reschedule (EV_A);	2237	periodics_reschedule (EV_A);
1747	# endif	2238	# endif
1748	/* no timer adjustment, as the monotonic clock doesn't jump */
1749	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1750	}	2239	}
1751	else	2240	else
1752	#endif	2241	#endif
1753	{	2242	{
1754	ev_rt_now = ev_time ();	2243	ev_rt_now = ev_time ();
1755		2244
1756	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2245	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1757	{	2246	{
		2247	/* adjust timers. this is easy, as the offset is the same for all of them */
		2248	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1758	#if EV_PERIODIC_ENABLE	2249	#if EV_PERIODIC_ENABLE
1759	periodics_reschedule (EV_A);	2250	periodics_reschedule (EV_A);
1760	#endif	2251	#endif
1761	/* adjust timers. this is easy, as the offset is the same for all of them */
1762	for (i = 0; i < timercnt; ++i)
1763	{
1764	ANHE *he = timers + i + HEAP0;
1765	ANHE_w (*he)->at += ev_rt_now - mn_now;
1766	ANHE_at_set (*he);
1767	}
1768	}	2252	}
1769		2253
1770	mn_now = ev_rt_now;	2254	mn_now = ev_rt_now;
1771	}	2255	}
1772	}	2256	}
1773		2257
1774	void	2258	void
1775	ev_ref (EV_P)
1776	{
1777	++activecnt;
1778	}
1779
1780	void
1781	ev_unref (EV_P)
1782	{
1783	--activecnt;
1784	}
1785
1786	static int loop_done;
1787
1788	void
1789	ev_loop (EV_P_ int flags)	2259	ev_loop (EV_P_ int flags)
1790	{	2260	{
		2261	#if EV_MINIMAL < 2
		2262	++loop_depth;
		2263	#endif
		2264
		2265	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2266
1791	loop_done = EVUNLOOP_CANCEL;	2267	loop_done = EVUNLOOP_CANCEL;
1792		2268
1793	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2269	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1794		2270
1795	do	2271	do
1796	{	2272	{
		2273	#if EV_VERIFY >= 2
		2274	ev_loop_verify (EV_A);
		2275	#endif
		2276
1797	#ifndef _WIN32	2277	#ifndef _WIN32
1798	if (expect_false (curpid)) /* penalise the forking check even more */	2278	if (expect_false (curpid)) /* penalise the forking check even more */
1799	if (expect_false (getpid () != curpid))	2279	if (expect_false (getpid () != curpid))
1800	{	2280	{
1801	curpid = getpid ();	2281	curpid = getpid ();
…		…
1807	/* we might have forked, so queue fork handlers */	2287	/* we might have forked, so queue fork handlers */
1808	if (expect_false (postfork))	2288	if (expect_false (postfork))
1809	if (forkcnt)	2289	if (forkcnt)
1810	{	2290	{
1811	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2291	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1812	call_pending (EV_A);	2292	EV_INVOKE_PENDING;
1813	}	2293	}
1814	#endif	2294	#endif
1815		2295
1816	/* queue prepare watchers (and execute them) */	2296	/* queue prepare watchers (and execute them) */
1817	if (expect_false (preparecnt))	2297	if (expect_false (preparecnt))
1818	{	2298	{
1819	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2299	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1820	call_pending (EV_A);	2300	EV_INVOKE_PENDING;
1821	}	2301	}
1822		2302
1823	if (expect_false (!activecnt))	2303	if (expect_false (loop_done))
1824	break;	2304	break;
1825		2305
1826	/* we might have forked, so reify kernel state if necessary */	2306	/* we might have forked, so reify kernel state if necessary */
1827	if (expect_false (postfork))	2307	if (expect_false (postfork))
1828	loop_fork (EV_A);	2308	loop_fork (EV_A);
…		…
1835	ev_tstamp waittime = 0.;	2315	ev_tstamp waittime = 0.;
1836	ev_tstamp sleeptime = 0.;	2316	ev_tstamp sleeptime = 0.;
1837		2317
1838	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2318	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
1839	{	2319	{
		2320	/* remember old timestamp for io_blocktime calculation */
		2321	ev_tstamp prev_mn_now = mn_now;
		2322
1840	/* update time to cancel out callback processing overhead */	2323	/* update time to cancel out callback processing overhead */
1841	time_update (EV_A_ 1e100);	2324	time_update (EV_A_ 1e100);
1842		2325
1843	waittime = MAX_BLOCKTIME;	2326	waittime = MAX_BLOCKTIME;
1844		2327
…		…
1854	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2337	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
1855	if (waittime > to) waittime = to;	2338	if (waittime > to) waittime = to;
1856	}	2339	}
1857	#endif	2340	#endif
1858		2341
		2342	/* don't let timeouts decrease the waittime below timeout_blocktime */
1859	if (expect_false (waittime < timeout_blocktime))	2343	if (expect_false (waittime < timeout_blocktime))
1860	waittime = timeout_blocktime;	2344	waittime = timeout_blocktime;
1861		2345
1862	sleeptime = waittime - backend_fudge;	2346	/* extra check because io_blocktime is commonly 0 */
1863
1864	if (expect_true (sleeptime > io_blocktime))	2347	if (expect_false (io_blocktime))
1865	sleeptime = io_blocktime;
1866
1867	if (sleeptime)
1868	{	2348	{
		2349	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2350
		2351	if (sleeptime > waittime - backend_fudge)
		2352	sleeptime = waittime - backend_fudge;
		2353
		2354	if (expect_true (sleeptime > 0.))
		2355	{
1869	ev_sleep (sleeptime);	2356	ev_sleep (sleeptime);
1870	waittime -= sleeptime;	2357	waittime -= sleeptime;
		2358	}
1871	}	2359	}
1872	}	2360	}
1873		2361
		2362	#if EV_MINIMAL < 2
1874	++loop_count;	2363	++loop_count;
		2364	#endif
		2365	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
1875	backend_poll (EV_A_ waittime);	2366	backend_poll (EV_A_ waittime);
		2367	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
1876		2368
1877	/* update ev_rt_now, do magic */	2369	/* update ev_rt_now, do magic */
1878	time_update (EV_A_ waittime + sleeptime);	2370	time_update (EV_A_ waittime + sleeptime);
1879	}	2371	}
1880		2372
…		…
1891		2383
1892	/* queue check watchers, to be executed first */	2384	/* queue check watchers, to be executed first */
1893	if (expect_false (checkcnt))	2385	if (expect_false (checkcnt))
1894	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2386	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1895		2387
1896	call_pending (EV_A);	2388	EV_INVOKE_PENDING;
1897	}	2389	}
1898	while (expect_true (	2390	while (expect_true (
1899	activecnt	2391	activecnt
1900	&& !loop_done	2392	&& !loop_done
1901	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2393	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
1902	));	2394	));
1903		2395
1904	if (loop_done == EVUNLOOP_ONE)	2396	if (loop_done == EVUNLOOP_ONE)
1905	loop_done = EVUNLOOP_CANCEL;	2397	loop_done = EVUNLOOP_CANCEL;
		2398
		2399	#if EV_MINIMAL < 2
		2400	--loop_depth;
		2401	#endif
1906	}	2402	}
1907		2403
1908	void	2404	void
1909	ev_unloop (EV_P_ int how)	2405	ev_unloop (EV_P_ int how)
1910	{	2406	{
1911	loop_done = how;	2407	loop_done = how;
1912	}	2408	}
1913		2409
		2410	void
		2411	ev_ref (EV_P)
		2412	{
		2413	++activecnt;
		2414	}
		2415
		2416	void
		2417	ev_unref (EV_P)
		2418	{
		2419	--activecnt;
		2420	}
		2421
		2422	void
		2423	ev_now_update (EV_P)
		2424	{
		2425	time_update (EV_A_ 1e100);
		2426	}
		2427
		2428	void
		2429	ev_suspend (EV_P)
		2430	{
		2431	ev_now_update (EV_A);
		2432	}
		2433
		2434	void
		2435	ev_resume (EV_P)
		2436	{
		2437	ev_tstamp mn_prev = mn_now;
		2438
		2439	ev_now_update (EV_A);
		2440	timers_reschedule (EV_A_ mn_now - mn_prev);
		2441	#if EV_PERIODIC_ENABLE
		2442	/* TODO: really do this? */
		2443	periodics_reschedule (EV_A);
		2444	#endif
		2445	}
		2446
1914	/*****************************************************************************/	2447	/*****************************************************************************/
		2448	/* singly-linked list management, used when the expected list length is short */
1915		2449
1916	void inline_size	2450	inline_size void
1917	wlist_add (WL *head, WL elem)	2451	wlist_add (WL *head, WL elem)
1918	{	2452	{
1919	elem->next = *head;	2453	elem->next = *head;
1920	*head = elem;	2454	*head = elem;
1921	}	2455	}
1922		2456
1923	void inline_size	2457	inline_size void
1924	wlist_del (WL *head, WL elem)	2458	wlist_del (WL *head, WL elem)
1925	{	2459	{
1926	while (*head)	2460	while (*head)
1927	{	2461	{
1928	if (*head == elem)	2462	if (expect_true (*head == elem))
1929	{	2463	{
1930	*head = elem->next;	2464	*head = elem->next;
1931	return;	2465	break;
1932	}	2466	}
1933		2467
1934	head = &(*head)->next;	2468	head = &(*head)->next;
1935	}	2469	}
1936	}	2470	}
1937		2471
1938	void inline_speed	2472	/* internal, faster, version of ev_clear_pending */
		2473	inline_speed void
1939	clear_pending (EV_P_ W w)	2474	clear_pending (EV_P_ W w)
1940	{	2475	{
1941	if (w->pending)	2476	if (w->pending)
1942	{	2477	{
1943	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2478	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1944	w->pending = 0;	2479	w->pending = 0;
1945	}	2480	}
1946	}	2481	}
1947		2482
1948	int	2483	int
…		…
1952	int pending = w_->pending;	2487	int pending = w_->pending;
1953		2488
1954	if (expect_true (pending))	2489	if (expect_true (pending))
1955	{	2490	{
1956	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2491	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2492	p->w = (W)&pending_w;
1957	w_->pending = 0;	2493	w_->pending = 0;
1958	p->w = 0;
1959	return p->events;	2494	return p->events;
1960	}	2495	}
1961	else	2496	else
1962	return 0;	2497	return 0;
1963	}	2498	}
1964		2499
1965	void inline_size	2500	inline_size void
1966	pri_adjust (EV_P_ W w)	2501	pri_adjust (EV_P_ W w)
1967	{	2502	{
1968	int pri = w->priority;	2503	int pri = ev_priority (w);
1969	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2504	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1970	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2505	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1971	w->priority = pri;	2506	ev_set_priority (w, pri);
1972	}	2507	}
1973		2508
1974	void inline_speed	2509	inline_speed void
1975	ev_start (EV_P_ W w, int active)	2510	ev_start (EV_P_ W w, int active)
1976	{	2511	{
1977	pri_adjust (EV_A_ w);	2512	pri_adjust (EV_A_ w);
1978	w->active = active;	2513	w->active = active;
1979	ev_ref (EV_A);	2514	ev_ref (EV_A);
1980	}	2515	}
1981		2516
1982	void inline_size	2517	inline_size void
1983	ev_stop (EV_P_ W w)	2518	ev_stop (EV_P_ W w)
1984	{	2519	{
1985	ev_unref (EV_A);	2520	ev_unref (EV_A);
1986	w->active = 0;	2521	w->active = 0;
1987	}	2522	}
…		…
1994	int fd = w->fd;	2529	int fd = w->fd;
1995		2530
1996	if (expect_false (ev_is_active (w)))	2531	if (expect_false (ev_is_active (w)))
1997	return;	2532	return;
1998		2533
1999	assert (("ev_io_start called with negative fd", fd >= 0));	2534	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2535	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2536
		2537	EV_FREQUENT_CHECK;
2000		2538
2001	ev_start (EV_A_ (W)w, 1);	2539	ev_start (EV_A_ (W)w, 1);
2002	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2540	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2003	wlist_add (&anfds[fd].head, (WL)w);	2541	wlist_add (&anfds[fd].head, (WL)w);
2004		2542
2005	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2543	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2006	w->events &= ~EV_IOFDSET;	2544	w->events &= ~EV__IOFDSET;
		2545
		2546	EV_FREQUENT_CHECK;
2007	}	2547	}
2008		2548
2009	void noinline	2549	void noinline
2010	ev_io_stop (EV_P_ ev_io *w)	2550	ev_io_stop (EV_P_ ev_io *w)
2011	{	2551	{
2012	clear_pending (EV_A_ (W)w);	2552	clear_pending (EV_A_ (W)w);
2013	if (expect_false (!ev_is_active (w)))	2553	if (expect_false (!ev_is_active (w)))
2014	return;	2554	return;
2015		2555
2016	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2556	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2557
		2558	EV_FREQUENT_CHECK;
2017		2559
2018	wlist_del (&anfds[w->fd].head, (WL)w);	2560	wlist_del (&anfds[w->fd].head, (WL)w);
2019	ev_stop (EV_A_ (W)w);	2561	ev_stop (EV_A_ (W)w);
2020		2562
2021	fd_change (EV_A_ w->fd, 1);	2563	fd_change (EV_A_ w->fd, 1);
		2564
		2565	EV_FREQUENT_CHECK;
2022	}	2566	}
2023		2567
2024	void noinline	2568	void noinline
2025	ev_timer_start (EV_P_ ev_timer *w)	2569	ev_timer_start (EV_P_ ev_timer *w)
2026	{	2570	{
2027	if (expect_false (ev_is_active (w)))	2571	if (expect_false (ev_is_active (w)))
2028	return;	2572	return;
2029		2573
2030	ev_at (w) += mn_now;	2574	ev_at (w) += mn_now;
2031		2575
2032	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2576	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2033		2577
		2578	EV_FREQUENT_CHECK;
		2579
		2580	++timercnt;
2034	ev_start (EV_A_ (W)w, ++timercnt + HEAP0 - 1);	2581	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
2035	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);	2582	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
2036	ANHE_w (timers [ev_active (w)]) = (WT)w;	2583	ANHE_w (timers [ev_active (w)]) = (WT)w;
2037	ANHE_at_set (timers [ev_active (w)]);	2584	ANHE_at_cache (timers [ev_active (w)]);
2038	upheap (timers, ev_active (w));	2585	upheap (timers, ev_active (w));
2039		2586
		2587	EV_FREQUENT_CHECK;
		2588
2040	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2589	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2041	}	2590	}
2042		2591
2043	void noinline	2592	void noinline
2044	ev_timer_stop (EV_P_ ev_timer *w)	2593	ev_timer_stop (EV_P_ ev_timer *w)
2045	{	2594	{
2046	clear_pending (EV_A_ (W)w);	2595	clear_pending (EV_A_ (W)w);
2047	if (expect_false (!ev_is_active (w)))	2596	if (expect_false (!ev_is_active (w)))
2048	return;	2597	return;
2049		2598
		2599	EV_FREQUENT_CHECK;
		2600
2050	{	2601	{
2051	int active = ev_active (w);	2602	int active = ev_active (w);
2052		2603
2053	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2604	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2054		2605
		2606	--timercnt;
		2607
2055	if (expect_true (active < timercnt + HEAP0 - 1))	2608	if (expect_true (active < timercnt + HEAP0))
2056	{	2609	{
2057	timers [active] = timers [timercnt + HEAP0 - 1];	2610	timers [active] = timers [timercnt + HEAP0];
2058	adjustheap (timers, timercnt, active);	2611	adjustheap (timers, timercnt, active);
2059	}	2612	}
2060
2061	--timercnt;
2062	}	2613	}
2063		2614
2064	ev_at (w) -= mn_now;	2615	ev_at (w) -= mn_now;
2065		2616
2066	ev_stop (EV_A_ (W)w);	2617	ev_stop (EV_A_ (W)w);
		2618
		2619	EV_FREQUENT_CHECK;
2067	}	2620	}
2068		2621
2069	void noinline	2622	void noinline
2070	ev_timer_again (EV_P_ ev_timer *w)	2623	ev_timer_again (EV_P_ ev_timer *w)
2071	{	2624	{
		2625	EV_FREQUENT_CHECK;
		2626
2072	if (ev_is_active (w))	2627	if (ev_is_active (w))
2073	{	2628	{
2074	if (w->repeat)	2629	if (w->repeat)
2075	{	2630	{
2076	ev_at (w) = mn_now + w->repeat;	2631	ev_at (w) = mn_now + w->repeat;
2077	ANHE_at_set (timers [ev_active (w)]);	2632	ANHE_at_cache (timers [ev_active (w)]);
2078	adjustheap (timers, timercnt, ev_active (w));	2633	adjustheap (timers, timercnt, ev_active (w));
2079	}	2634	}
2080	else	2635	else
2081	ev_timer_stop (EV_A_ w);	2636	ev_timer_stop (EV_A_ w);
2082	}	2637	}
2083	else if (w->repeat)	2638	else if (w->repeat)
2084	{	2639	{
2085	ev_at (w) = w->repeat;	2640	ev_at (w) = w->repeat;
2086	ev_timer_start (EV_A_ w);	2641	ev_timer_start (EV_A_ w);
2087	}	2642	}
		2643
		2644	EV_FREQUENT_CHECK;
		2645	}
		2646
		2647	ev_tstamp
		2648	ev_timer_remaining (EV_P_ ev_timer *w)
		2649	{
		2650	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
2088	}	2651	}
2089		2652
2090	#if EV_PERIODIC_ENABLE	2653	#if EV_PERIODIC_ENABLE
2091	void noinline	2654	void noinline
2092	ev_periodic_start (EV_P_ ev_periodic *w)	2655	ev_periodic_start (EV_P_ ev_periodic *w)
…		…
2096		2659
2097	if (w->reschedule_cb)	2660	if (w->reschedule_cb)
2098	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2661	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2099	else if (w->interval)	2662	else if (w->interval)
2100	{	2663	{
2101	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2664	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2102	/* this formula differs from the one in periodic_reify because we do not always round up */	2665	/* this formula differs from the one in periodic_reify because we do not always round up */
2103	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2666	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2104	}	2667	}
2105	else	2668	else
2106	ev_at (w) = w->offset;	2669	ev_at (w) = w->offset;
2107		2670
		2671	EV_FREQUENT_CHECK;
		2672
		2673	++periodiccnt;
2108	ev_start (EV_A_ (W)w, ++periodiccnt + HEAP0 - 1);	2674	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
2109	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);	2675	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
2110	ANHE_w (periodics [ev_active (w)]) = (WT)w;	2676	ANHE_w (periodics [ev_active (w)]) = (WT)w;
2111	ANHE_at_set (periodics [ev_active (w)]);	2677	ANHE_at_cache (periodics [ev_active (w)]);
2112	upheap (periodics, ev_active (w));	2678	upheap (periodics, ev_active (w));
2113		2679
		2680	EV_FREQUENT_CHECK;
		2681
2114	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2682	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2115	}	2683	}
2116		2684
2117	void noinline	2685	void noinline
2118	ev_periodic_stop (EV_P_ ev_periodic *w)	2686	ev_periodic_stop (EV_P_ ev_periodic *w)
2119	{	2687	{
2120	clear_pending (EV_A_ (W)w);	2688	clear_pending (EV_A_ (W)w);
2121	if (expect_false (!ev_is_active (w)))	2689	if (expect_false (!ev_is_active (w)))
2122	return;	2690	return;
2123		2691
		2692	EV_FREQUENT_CHECK;
		2693
2124	{	2694	{
2125	int active = ev_active (w);	2695	int active = ev_active (w);
2126		2696
2127	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2697	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2128		2698
		2699	--periodiccnt;
		2700
2129	if (expect_true (active < periodiccnt + HEAP0 - 1))	2701	if (expect_true (active < periodiccnt + HEAP0))
2130	{	2702	{
2131	periodics [active] = periodics [periodiccnt + HEAP0 - 1];	2703	periodics [active] = periodics [periodiccnt + HEAP0];
2132	adjustheap (periodics, periodiccnt, active);	2704	adjustheap (periodics, periodiccnt, active);
2133	}	2705	}
2134
2135	--periodiccnt;
2136	}	2706	}
2137		2707
2138	ev_stop (EV_A_ (W)w);	2708	ev_stop (EV_A_ (W)w);
		2709
		2710	EV_FREQUENT_CHECK;
2139	}	2711	}
2140		2712
2141	void noinline	2713	void noinline
2142	ev_periodic_again (EV_P_ ev_periodic *w)	2714	ev_periodic_again (EV_P_ ev_periodic *w)
2143	{	2715	{
…		…
2152	#endif	2724	#endif
2153		2725
2154	void noinline	2726	void noinline
2155	ev_signal_start (EV_P_ ev_signal *w)	2727	ev_signal_start (EV_P_ ev_signal *w)
2156	{	2728	{
2157	#if EV_MULTIPLICITY
2158	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2159	#endif
2160	if (expect_false (ev_is_active (w)))	2729	if (expect_false (ev_is_active (w)))
2161	return;	2730	return;
2162		2731
2163	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2732	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2164		2733
2165	evpipe_init (EV_A);	2734	#if EV_MULTIPLICITY
		2735	assert (("libev: a signal must not be attached to two different loops",
		2736	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2166		2737
		2738	signals [w->signum - 1].loop = EV_A;
		2739	#endif
		2740
		2741	EV_FREQUENT_CHECK;
		2742
		2743	#if EV_USE_SIGNALFD
		2744	if (sigfd == -2)
2167	{	2745	{
2168	#ifndef _WIN32	2746	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2169	sigset_t full, prev;	2747	if (sigfd < 0 && errno == EINVAL)
2170	sigfillset (&full);	2748	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2171	sigprocmask (SIG_SETMASK, &full, &prev);
2172	#endif
2173		2749
2174	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	2750	if (sigfd >= 0)
		2751	{
		2752	fd_intern (sigfd); /* doing it twice will not hurt */
2175		2753
2176	#ifndef _WIN32	2754	sigemptyset (&sigfd_set);
2177	sigprocmask (SIG_SETMASK, &prev, 0);	2755
2178	#endif	2756	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2757	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2758	ev_io_start (EV_A_ &sigfd_w);
		2759	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2760	}
2179	}	2761	}
		2762
		2763	if (sigfd >= 0)
		2764	{
		2765	/* TODO: check .head */
		2766	sigaddset (&sigfd_set, w->signum);
		2767	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2768
		2769	signalfd (sigfd, &sigfd_set, 0);
		2770	}
		2771	#endif
2180		2772
2181	ev_start (EV_A_ (W)w, 1);	2773	ev_start (EV_A_ (W)w, 1);
2182	wlist_add (&signals [w->signum - 1].head, (WL)w);	2774	wlist_add (&signals [w->signum - 1].head, (WL)w);
2183		2775
2184	if (!((WL)w)->next)	2776	if (!((WL)w)->next)
		2777	# if EV_USE_SIGNALFD
		2778	if (sigfd < 0) /*TODO*/
		2779	# endif
2185	{	2780	{
2186	#if _WIN32	2781	# ifdef _WIN32
		2782	evpipe_init (EV_A);
		2783
2187	signal (w->signum, ev_sighandler);	2784	signal (w->signum, ev_sighandler);
2188	#else	2785	# else
2189	struct sigaction sa;	2786	struct sigaction sa;
		2787
		2788	evpipe_init (EV_A);
		2789
2190	sa.sa_handler = ev_sighandler;	2790	sa.sa_handler = ev_sighandler;
2191	sigfillset (&sa.sa_mask);	2791	sigfillset (&sa.sa_mask);
2192	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2792	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2193	sigaction (w->signum, &sa, 0);	2793	sigaction (w->signum, &sa, 0);
		2794
		2795	sigemptyset (&sa.sa_mask);
		2796	sigaddset (&sa.sa_mask, w->signum);
		2797	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2194	#endif	2798	#endif
2195	}	2799	}
		2800
		2801	EV_FREQUENT_CHECK;
2196	}	2802	}
2197		2803
2198	void noinline	2804	void noinline
2199	ev_signal_stop (EV_P_ ev_signal *w)	2805	ev_signal_stop (EV_P_ ev_signal *w)
2200	{	2806	{
2201	clear_pending (EV_A_ (W)w);	2807	clear_pending (EV_A_ (W)w);
2202	if (expect_false (!ev_is_active (w)))	2808	if (expect_false (!ev_is_active (w)))
2203	return;	2809	return;
2204		2810
		2811	EV_FREQUENT_CHECK;
		2812
2205	wlist_del (&signals [w->signum - 1].head, (WL)w);	2813	wlist_del (&signals [w->signum - 1].head, (WL)w);
2206	ev_stop (EV_A_ (W)w);	2814	ev_stop (EV_A_ (W)w);
2207		2815
2208	if (!signals [w->signum - 1].head)	2816	if (!signals [w->signum - 1].head)
		2817	{
		2818	#if EV_MULTIPLICITY
		2819	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2820	#endif
		2821	#if EV_USE_SIGNALFD
		2822	if (sigfd >= 0)
		2823	{
		2824	sigset_t ss;
		2825
		2826	sigemptyset (&ss);
		2827	sigaddset (&ss, w->signum);
		2828	sigdelset (&sigfd_set, w->signum);
		2829
		2830	signalfd (sigfd, &sigfd_set, 0);
		2831	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2832	}
		2833	else
		2834	#endif
2209	signal (w->signum, SIG_DFL);	2835	signal (w->signum, SIG_DFL);
		2836	}
		2837
		2838	EV_FREQUENT_CHECK;
2210	}	2839	}
2211		2840
2212	void	2841	void
2213	ev_child_start (EV_P_ ev_child *w)	2842	ev_child_start (EV_P_ ev_child *w)
2214	{	2843	{
2215	#if EV_MULTIPLICITY	2844	#if EV_MULTIPLICITY
2216	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2845	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2217	#endif	2846	#endif
2218	if (expect_false (ev_is_active (w)))	2847	if (expect_false (ev_is_active (w)))
2219	return;	2848	return;
2220		2849
		2850	EV_FREQUENT_CHECK;
		2851
2221	ev_start (EV_A_ (W)w, 1);	2852	ev_start (EV_A_ (W)w, 1);
2222	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2853	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		2854
		2855	EV_FREQUENT_CHECK;
2223	}	2856	}
2224		2857
2225	void	2858	void
2226	ev_child_stop (EV_P_ ev_child *w)	2859	ev_child_stop (EV_P_ ev_child *w)
2227	{	2860	{
2228	clear_pending (EV_A_ (W)w);	2861	clear_pending (EV_A_ (W)w);
2229	if (expect_false (!ev_is_active (w)))	2862	if (expect_false (!ev_is_active (w)))
2230	return;	2863	return;
2231		2864
		2865	EV_FREQUENT_CHECK;
		2866
2232	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2867	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
2233	ev_stop (EV_A_ (W)w);	2868	ev_stop (EV_A_ (W)w);
		2869
		2870	EV_FREQUENT_CHECK;
2234	}	2871	}
2235		2872
2236	#if EV_STAT_ENABLE	2873	#if EV_STAT_ENABLE
2237		2874
2238	# ifdef _WIN32	2875	# ifdef _WIN32
2239	# undef lstat	2876	# undef lstat
2240	# define lstat(a,b) _stati64 (a,b)	2877	# define lstat(a,b) _stati64 (a,b)
2241	# endif	2878	# endif
2242		2879
2243	#define DEF_STAT_INTERVAL 5.0074891	2880	#define DEF_STAT_INTERVAL 5.0074891
		2881	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2244	#define MIN_STAT_INTERVAL 0.1074891	2882	#define MIN_STAT_INTERVAL 0.1074891
2245		2883
2246	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2884	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2247		2885
2248	#if EV_USE_INOTIFY	2886	#if EV_USE_INOTIFY
2249	# define EV_INOTIFY_BUFSIZE 8192	2887
		2888	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2889	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2250		2890
2251	static void noinline	2891	static void noinline
2252	infy_add (EV_P_ ev_stat *w)	2892	infy_add (EV_P_ ev_stat *w)
2253	{	2893	{
2254	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);	2894	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);
2255		2895
2256	if (w->wd < 0)	2896	if (w->wd >= 0)
		2897	{
		2898	struct statfs sfs;
		2899
		2900	/* now local changes will be tracked by inotify, but remote changes won't */
		2901	/* unless the filesystem is known to be local, we therefore still poll */
		2902	/* also do poll on <2.6.25, but with normal frequency */
		2903
		2904	if (!fs_2625)
		2905	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2906	else if (!statfs (w->path, &sfs)
		2907	&& (sfs.f_type == 0x1373 /* devfs */
		2908	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2909	|| sfs.f_type == 0x3153464a /* jfs */
		2910	|| sfs.f_type == 0x52654973 /* reiser3 */
		2911	|| sfs.f_type == 0x01021994 /* tempfs */
		2912	|| sfs.f_type == 0x58465342 /* xfs */))
		2913	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2914	else
		2915	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2257	{	2916	}
2258	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	2917	else
		2918	{
		2919	/* can't use inotify, continue to stat */
		2920	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2259		2921
2260	/* monitor some parent directory for speedup hints */	2922	/* if path is not there, monitor some parent directory for speedup hints */
2261	/* note that exceeding the hardcoded limit is not a correctness issue, */	2923	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2262	/* but an efficiency issue only */	2924	/* but an efficiency issue only */
2263	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2925	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2264	{	2926	{
2265	char path [4096];	2927	char path [4096];
2266	strcpy (path, w->path);	2928	strcpy (path, w->path);
…		…
2270	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	2932	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2271	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	2933	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2272		2934
2273	char *pend = strrchr (path, '/');	2935	char *pend = strrchr (path, '/');
2274		2936
2275	if (!pend)	2937	if (!pend || pend == path)
2276	break; /* whoops, no '/', complain to your admin */	2938	break;
2277		2939
2278	*pend = 0;	2940	*pend = 0;
2279	w->wd = inotify_add_watch (fs_fd, path, mask);	2941	w->wd = inotify_add_watch (fs_fd, path, mask);
2280	}	2942	}
2281	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2943	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2282	}	2944	}
2283	}	2945	}
2284	else
2285	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2286		2946
2287	if (w->wd >= 0)	2947	if (w->wd >= 0)
2288	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2948	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2949
		2950	/* now re-arm timer, if required */
		2951	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		2952	ev_timer_again (EV_A_ &w->timer);
		2953	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2289	}	2954	}
2290		2955
2291	static void noinline	2956	static void noinline
2292	infy_del (EV_P_ ev_stat *w)	2957	infy_del (EV_P_ ev_stat *w)
2293	{	2958	{
…		…
2307		2972
2308	static void noinline	2973	static void noinline
2309	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2974	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2310	{	2975	{
2311	if (slot < 0)	2976	if (slot < 0)
2312	/* overflow, need to check for all hahs slots */	2977	/* overflow, need to check for all hash slots */
2313	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	2978	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2314	infy_wd (EV_A_ slot, wd, ev);	2979	infy_wd (EV_A_ slot, wd, ev);
2315	else	2980	else
2316	{	2981	{
2317	WL w_;	2982	WL w_;
…		…
2323		2988
2324	if (w->wd == wd || wd == -1)	2989	if (w->wd == wd || wd == -1)
2325	{	2990	{
2326	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	2991	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2327	{	2992	{
		2993	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
2328	w->wd = -1;	2994	w->wd = -1;
2329	infy_add (EV_A_ w); /* re-add, no matter what */	2995	infy_add (EV_A_ w); /* re-add, no matter what */
2330	}	2996	}
2331		2997
2332	stat_timer_cb (EV_A_ &w->timer, 0);	2998	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2337		3003
2338	static void	3004	static void
2339	infy_cb (EV_P_ ev_io *w, int revents)	3005	infy_cb (EV_P_ ev_io *w, int revents)
2340	{	3006	{
2341	char buf [EV_INOTIFY_BUFSIZE];	3007	char buf [EV_INOTIFY_BUFSIZE];
2342	struct inotify_event *ev = (struct inotify_event *)buf;
2343	int ofs;	3008	int ofs;
2344	int len = read (fs_fd, buf, sizeof (buf));	3009	int len = read (fs_fd, buf, sizeof (buf));
2345		3010
2346	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3011	for (ofs = 0; ofs < len; )
		3012	{
		3013	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2347	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3014	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3015	ofs += sizeof (struct inotify_event) + ev->len;
		3016	}
2348	}	3017	}
2349		3018
2350	void inline_size	3019	inline_size unsigned int
		3020	ev_linux_version (void)
		3021	{
		3022	struct utsname buf;
		3023	unsigned int v;
		3024	int i;
		3025	char *p = buf.release;
		3026
		3027	if (uname (&buf))
		3028	return 0;
		3029
		3030	for (i = 3+1; --i; )
		3031	{
		3032	unsigned int c = 0;
		3033
		3034	for (;;)
		3035	{
		3036	if (*p >= '0' && *p <= '9')
		3037	c = c * 10 + *p++ - '0';
		3038	else
		3039	{
		3040	p += *p == '.';
		3041	break;
		3042	}
		3043	}
		3044
		3045	v = (v << 8) | c;
		3046	}
		3047
		3048	return v;
		3049	}
		3050
		3051	inline_size void
		3052	ev_check_2625 (EV_P)
		3053	{
		3054	/* kernels < 2.6.25 are borked
		3055	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3056	*/
		3057	if (ev_linux_version () < 0x020619)
		3058	return;
		3059
		3060	fs_2625 = 1;
		3061	}
		3062
		3063	inline_size int
		3064	infy_newfd (void)
		3065	{
		3066	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3067	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3068	if (fd >= 0)
		3069	return fd;
		3070	#endif
		3071	return inotify_init ();
		3072	}
		3073
		3074	inline_size void
2351	infy_init (EV_P)	3075	infy_init (EV_P)
2352	{	3076	{
2353	if (fs_fd != -2)	3077	if (fs_fd != -2)
2354	return;	3078	return;
2355		3079
		3080	fs_fd = -1;
		3081
		3082	ev_check_2625 (EV_A);
		3083
2356	fs_fd = inotify_init ();	3084	fs_fd = infy_newfd ();
2357		3085
2358	if (fs_fd >= 0)	3086	if (fs_fd >= 0)
2359	{	3087	{
		3088	fd_intern (fs_fd);
2360	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3089	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2361	ev_set_priority (&fs_w, EV_MAXPRI);	3090	ev_set_priority (&fs_w, EV_MAXPRI);
2362	ev_io_start (EV_A_ &fs_w);	3091	ev_io_start (EV_A_ &fs_w);
		3092	ev_unref (EV_A);
2363	}	3093	}
2364	}	3094	}
2365		3095
2366	void inline_size	3096	inline_size void
2367	infy_fork (EV_P)	3097	infy_fork (EV_P)
2368	{	3098	{
2369	int slot;	3099	int slot;
2370		3100
2371	if (fs_fd < 0)	3101	if (fs_fd < 0)
2372	return;	3102	return;
2373		3103
		3104	ev_ref (EV_A);
		3105	ev_io_stop (EV_A_ &fs_w);
2374	close (fs_fd);	3106	close (fs_fd);
2375	fs_fd = inotify_init ();	3107	fs_fd = infy_newfd ();
		3108
		3109	if (fs_fd >= 0)
		3110	{
		3111	fd_intern (fs_fd);
		3112	ev_io_set (&fs_w, fs_fd, EV_READ);
		3113	ev_io_start (EV_A_ &fs_w);
		3114	ev_unref (EV_A);
		3115	}
2376		3116
2377	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3117	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
2378	{	3118	{
2379	WL w_ = fs_hash [slot].head;	3119	WL w_ = fs_hash [slot].head;
2380	fs_hash [slot].head = 0;	3120	fs_hash [slot].head = 0;
…		…
2387	w->wd = -1;	3127	w->wd = -1;
2388		3128
2389	if (fs_fd >= 0)	3129	if (fs_fd >= 0)
2390	infy_add (EV_A_ w); /* re-add, no matter what */	3130	infy_add (EV_A_ w); /* re-add, no matter what */
2391	else	3131	else
		3132	{
		3133	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3134	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2392	ev_timer_start (EV_A_ &w->timer);	3135	ev_timer_again (EV_A_ &w->timer);
		3136	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3137	}
2393	}	3138	}
2394
2395	}	3139	}
2396	}	3140	}
2397		3141
		3142	#endif
		3143
		3144	#ifdef _WIN32
		3145	# define EV_LSTAT(p,b) _stati64 (p, b)
		3146	#else
		3147	# define EV_LSTAT(p,b) lstat (p, b)
2398	#endif	3148	#endif
2399		3149
2400	void	3150	void
2401	ev_stat_stat (EV_P_ ev_stat *w)	3151	ev_stat_stat (EV_P_ ev_stat *w)
2402	{	3152	{
…		…
2409	static void noinline	3159	static void noinline
2410	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3160	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2411	{	3161	{
2412	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3162	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2413		3163
2414	/* we copy this here each the time so that */	3164	ev_statdata prev = w->attr;
2415	/* prev has the old value when the callback gets invoked */
2416	w->prev = w->attr;
2417	ev_stat_stat (EV_A_ w);	3165	ev_stat_stat (EV_A_ w);
2418		3166
2419	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3167	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2420	if (	3168	if (
2421	w->prev.st_dev != w->attr.st_dev	3169	prev.st_dev != w->attr.st_dev
2422	|| w->prev.st_ino != w->attr.st_ino	3170	|| prev.st_ino != w->attr.st_ino
2423	|| w->prev.st_mode != w->attr.st_mode	3171	|| prev.st_mode != w->attr.st_mode
2424	|| w->prev.st_nlink != w->attr.st_nlink	3172	|| prev.st_nlink != w->attr.st_nlink
2425	|| w->prev.st_uid != w->attr.st_uid	3173	|| prev.st_uid != w->attr.st_uid
2426	|| w->prev.st_gid != w->attr.st_gid	3174	|| prev.st_gid != w->attr.st_gid
2427	|| w->prev.st_rdev != w->attr.st_rdev	3175	|| prev.st_rdev != w->attr.st_rdev
2428	|| w->prev.st_size != w->attr.st_size	3176	|| prev.st_size != w->attr.st_size
2429	|| w->prev.st_atime != w->attr.st_atime	3177	|| prev.st_atime != w->attr.st_atime
2430	|| w->prev.st_mtime != w->attr.st_mtime	3178	|| prev.st_mtime != w->attr.st_mtime
2431	|| w->prev.st_ctime != w->attr.st_ctime	3179	|| prev.st_ctime != w->attr.st_ctime
2432	) {	3180	) {
		3181	/* we only update w->prev on actual differences */
		3182	/* in case we test more often than invoke the callback, */
		3183	/* to ensure that prev is always different to attr */
		3184	w->prev = prev;
		3185
2433	#if EV_USE_INOTIFY	3186	#if EV_USE_INOTIFY
		3187	if (fs_fd >= 0)
		3188	{
2434	infy_del (EV_A_ w);	3189	infy_del (EV_A_ w);
2435	infy_add (EV_A_ w);	3190	infy_add (EV_A_ w);
2436	ev_stat_stat (EV_A_ w); /* avoid race... */	3191	ev_stat_stat (EV_A_ w); /* avoid race... */
		3192	}
2437	#endif	3193	#endif
2438		3194
2439	ev_feed_event (EV_A_ w, EV_STAT);	3195	ev_feed_event (EV_A_ w, EV_STAT);
2440	}	3196	}
2441	}	3197	}
…		…
2444	ev_stat_start (EV_P_ ev_stat *w)	3200	ev_stat_start (EV_P_ ev_stat *w)
2445	{	3201	{
2446	if (expect_false (ev_is_active (w)))	3202	if (expect_false (ev_is_active (w)))
2447	return;	3203	return;
2448		3204
2449	/* since we use memcmp, we need to clear any padding data etc. */
2450	memset (&w->prev, 0, sizeof (ev_statdata));
2451	memset (&w->attr, 0, sizeof (ev_statdata));
2452
2453	ev_stat_stat (EV_A_ w);	3205	ev_stat_stat (EV_A_ w);
2454		3206
		3207	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2455	if (w->interval < MIN_STAT_INTERVAL)	3208	w->interval = MIN_STAT_INTERVAL;
2456	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2457		3209
2458	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3210	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2459	ev_set_priority (&w->timer, ev_priority (w));	3211	ev_set_priority (&w->timer, ev_priority (w));
2460		3212
2461	#if EV_USE_INOTIFY	3213	#if EV_USE_INOTIFY
2462	infy_init (EV_A);	3214	infy_init (EV_A);
2463		3215
2464	if (fs_fd >= 0)	3216	if (fs_fd >= 0)
2465	infy_add (EV_A_ w);	3217	infy_add (EV_A_ w);
2466	else	3218	else
2467	#endif	3219	#endif
		3220	{
2468	ev_timer_start (EV_A_ &w->timer);	3221	ev_timer_again (EV_A_ &w->timer);
		3222	ev_unref (EV_A);
		3223	}
2469		3224
2470	ev_start (EV_A_ (W)w, 1);	3225	ev_start (EV_A_ (W)w, 1);
		3226
		3227	EV_FREQUENT_CHECK;
2471	}	3228	}
2472		3229
2473	void	3230	void
2474	ev_stat_stop (EV_P_ ev_stat *w)	3231	ev_stat_stop (EV_P_ ev_stat *w)
2475	{	3232	{
2476	clear_pending (EV_A_ (W)w);	3233	clear_pending (EV_A_ (W)w);
2477	if (expect_false (!ev_is_active (w)))	3234	if (expect_false (!ev_is_active (w)))
2478	return;	3235	return;
2479		3236
		3237	EV_FREQUENT_CHECK;
		3238
2480	#if EV_USE_INOTIFY	3239	#if EV_USE_INOTIFY
2481	infy_del (EV_A_ w);	3240	infy_del (EV_A_ w);
2482	#endif	3241	#endif
		3242
		3243	if (ev_is_active (&w->timer))
		3244	{
		3245	ev_ref (EV_A);
2483	ev_timer_stop (EV_A_ &w->timer);	3246	ev_timer_stop (EV_A_ &w->timer);
		3247	}
2484		3248
2485	ev_stop (EV_A_ (W)w);	3249	ev_stop (EV_A_ (W)w);
		3250
		3251	EV_FREQUENT_CHECK;
2486	}	3252	}
2487	#endif	3253	#endif
2488		3254
2489	#if EV_IDLE_ENABLE	3255	#if EV_IDLE_ENABLE
2490	void	3256	void
…		…
2492	{	3258	{
2493	if (expect_false (ev_is_active (w)))	3259	if (expect_false (ev_is_active (w)))
2494	return;	3260	return;
2495		3261
2496	pri_adjust (EV_A_ (W)w);	3262	pri_adjust (EV_A_ (W)w);
		3263
		3264	EV_FREQUENT_CHECK;
2497		3265
2498	{	3266	{
2499	int active = ++idlecnt [ABSPRI (w)];	3267	int active = ++idlecnt [ABSPRI (w)];
2500		3268
2501	++idleall;	3269	++idleall;
2502	ev_start (EV_A_ (W)w, active);	3270	ev_start (EV_A_ (W)w, active);
2503		3271
2504	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3272	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2505	idles [ABSPRI (w)][active - 1] = w;	3273	idles [ABSPRI (w)][active - 1] = w;
2506	}	3274	}
		3275
		3276	EV_FREQUENT_CHECK;
2507	}	3277	}
2508		3278
2509	void	3279	void
2510	ev_idle_stop (EV_P_ ev_idle *w)	3280	ev_idle_stop (EV_P_ ev_idle *w)
2511	{	3281	{
2512	clear_pending (EV_A_ (W)w);	3282	clear_pending (EV_A_ (W)w);
2513	if (expect_false (!ev_is_active (w)))	3283	if (expect_false (!ev_is_active (w)))
2514	return;	3284	return;
2515		3285
		3286	EV_FREQUENT_CHECK;
		3287
2516	{	3288	{
2517	int active = ev_active (w);	3289	int active = ev_active (w);
2518		3290
2519	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3291	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2520	ev_active (idles [ABSPRI (w)][active - 1]) = active;	3292	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2521		3293
2522	ev_stop (EV_A_ (W)w);	3294	ev_stop (EV_A_ (W)w);
2523	--idleall;	3295	--idleall;
2524	}	3296	}
		3297
		3298	EV_FREQUENT_CHECK;
2525	}	3299	}
2526	#endif	3300	#endif
2527		3301
2528	void	3302	void
2529	ev_prepare_start (EV_P_ ev_prepare *w)	3303	ev_prepare_start (EV_P_ ev_prepare *w)
2530	{	3304	{
2531	if (expect_false (ev_is_active (w)))	3305	if (expect_false (ev_is_active (w)))
2532	return;	3306	return;
		3307
		3308	EV_FREQUENT_CHECK;
2533		3309
2534	ev_start (EV_A_ (W)w, ++preparecnt);	3310	ev_start (EV_A_ (W)w, ++preparecnt);
2535	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3311	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2536	prepares [preparecnt - 1] = w;	3312	prepares [preparecnt - 1] = w;
		3313
		3314	EV_FREQUENT_CHECK;
2537	}	3315	}
2538		3316
2539	void	3317	void
2540	ev_prepare_stop (EV_P_ ev_prepare *w)	3318	ev_prepare_stop (EV_P_ ev_prepare *w)
2541	{	3319	{
2542	clear_pending (EV_A_ (W)w);	3320	clear_pending (EV_A_ (W)w);
2543	if (expect_false (!ev_is_active (w)))	3321	if (expect_false (!ev_is_active (w)))
2544	return;	3322	return;
2545		3323
		3324	EV_FREQUENT_CHECK;
		3325
2546	{	3326	{
2547	int active = ev_active (w);	3327	int active = ev_active (w);
2548		3328
2549	prepares [active - 1] = prepares [--preparecnt];	3329	prepares [active - 1] = prepares [--preparecnt];
2550	ev_active (prepares [active - 1]) = active;	3330	ev_active (prepares [active - 1]) = active;
2551	}	3331	}
2552		3332
2553	ev_stop (EV_A_ (W)w);	3333	ev_stop (EV_A_ (W)w);
		3334
		3335	EV_FREQUENT_CHECK;
2554	}	3336	}
2555		3337
2556	void	3338	void
2557	ev_check_start (EV_P_ ev_check *w)	3339	ev_check_start (EV_P_ ev_check *w)
2558	{	3340	{
2559	if (expect_false (ev_is_active (w)))	3341	if (expect_false (ev_is_active (w)))
2560	return;	3342	return;
		3343
		3344	EV_FREQUENT_CHECK;
2561		3345
2562	ev_start (EV_A_ (W)w, ++checkcnt);	3346	ev_start (EV_A_ (W)w, ++checkcnt);
2563	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3347	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2564	checks [checkcnt - 1] = w;	3348	checks [checkcnt - 1] = w;
		3349
		3350	EV_FREQUENT_CHECK;
2565	}	3351	}
2566		3352
2567	void	3353	void
2568	ev_check_stop (EV_P_ ev_check *w)	3354	ev_check_stop (EV_P_ ev_check *w)
2569	{	3355	{
2570	clear_pending (EV_A_ (W)w);	3356	clear_pending (EV_A_ (W)w);
2571	if (expect_false (!ev_is_active (w)))	3357	if (expect_false (!ev_is_active (w)))
2572	return;	3358	return;
2573		3359
		3360	EV_FREQUENT_CHECK;
		3361
2574	{	3362	{
2575	int active = ev_active (w);	3363	int active = ev_active (w);
2576		3364
2577	checks [active - 1] = checks [--checkcnt];	3365	checks [active - 1] = checks [--checkcnt];
2578	ev_active (checks [active - 1]) = active;	3366	ev_active (checks [active - 1]) = active;
2579	}	3367	}
2580		3368
2581	ev_stop (EV_A_ (W)w);	3369	ev_stop (EV_A_ (W)w);
		3370
		3371	EV_FREQUENT_CHECK;
2582	}	3372	}
2583		3373
2584	#if EV_EMBED_ENABLE	3374	#if EV_EMBED_ENABLE
2585	void noinline	3375	void noinline
2586	ev_embed_sweep (EV_P_ ev_embed *w)	3376	ev_embed_sweep (EV_P_ ev_embed *w)
…		…
2603	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3393	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2604	{	3394	{
2605	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3395	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2606		3396
2607	{	3397	{
2608	struct ev_loop *loop = w->other;	3398	EV_P = w->other;
2609		3399
2610	while (fdchangecnt)	3400	while (fdchangecnt)
2611	{	3401	{
2612	fd_reify (EV_A);	3402	fd_reify (EV_A);
2613	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3403	ev_loop (EV_A_ EVLOOP_NONBLOCK);
2614	}	3404	}
2615	}	3405	}
2616	}	3406	}
2617		3407
		3408	static void
		3409	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3410	{
		3411	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3412
		3413	ev_embed_stop (EV_A_ w);
		3414
		3415	{
		3416	EV_P = w->other;
		3417
		3418	ev_loop_fork (EV_A);
		3419	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		3420	}
		3421
		3422	ev_embed_start (EV_A_ w);
		3423	}
		3424
2618	#if 0	3425	#if 0
2619	static void	3426	static void
2620	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3427	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
2621	{	3428	{
2622	ev_idle_stop (EV_A_ idle);	3429	ev_idle_stop (EV_A_ idle);
…		…
2628	{	3435	{
2629	if (expect_false (ev_is_active (w)))	3436	if (expect_false (ev_is_active (w)))
2630	return;	3437	return;
2631		3438
2632	{	3439	{
2633	struct ev_loop *loop = w->other;	3440	EV_P = w->other;
2634	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3441	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2635	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3442	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2636	}	3443	}
		3444
		3445	EV_FREQUENT_CHECK;
2637		3446
2638	ev_set_priority (&w->io, ev_priority (w));	3447	ev_set_priority (&w->io, ev_priority (w));
2639	ev_io_start (EV_A_ &w->io);	3448	ev_io_start (EV_A_ &w->io);
2640		3449
2641	ev_prepare_init (&w->prepare, embed_prepare_cb);	3450	ev_prepare_init (&w->prepare, embed_prepare_cb);
2642	ev_set_priority (&w->prepare, EV_MINPRI);	3451	ev_set_priority (&w->prepare, EV_MINPRI);
2643	ev_prepare_start (EV_A_ &w->prepare);	3452	ev_prepare_start (EV_A_ &w->prepare);
2644		3453
		3454	ev_fork_init (&w->fork, embed_fork_cb);
		3455	ev_fork_start (EV_A_ &w->fork);
		3456
2645	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3457	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2646		3458
2647	ev_start (EV_A_ (W)w, 1);	3459	ev_start (EV_A_ (W)w, 1);
		3460
		3461	EV_FREQUENT_CHECK;
2648	}	3462	}
2649		3463
2650	void	3464	void
2651	ev_embed_stop (EV_P_ ev_embed *w)	3465	ev_embed_stop (EV_P_ ev_embed *w)
2652	{	3466	{
2653	clear_pending (EV_A_ (W)w);	3467	clear_pending (EV_A_ (W)w);
2654	if (expect_false (!ev_is_active (w)))	3468	if (expect_false (!ev_is_active (w)))
2655	return;	3469	return;
2656		3470
		3471	EV_FREQUENT_CHECK;
		3472
2657	ev_io_stop (EV_A_ &w->io);	3473	ev_io_stop (EV_A_ &w->io);
2658	ev_prepare_stop (EV_A_ &w->prepare);	3474	ev_prepare_stop (EV_A_ &w->prepare);
		3475	ev_fork_stop (EV_A_ &w->fork);
2659		3476
2660	ev_stop (EV_A_ (W)w);	3477	ev_stop (EV_A_ (W)w);
		3478
		3479	EV_FREQUENT_CHECK;
2661	}	3480	}
2662	#endif	3481	#endif
2663		3482
2664	#if EV_FORK_ENABLE	3483	#if EV_FORK_ENABLE
2665	void	3484	void
2666	ev_fork_start (EV_P_ ev_fork *w)	3485	ev_fork_start (EV_P_ ev_fork *w)
2667	{	3486	{
2668	if (expect_false (ev_is_active (w)))	3487	if (expect_false (ev_is_active (w)))
2669	return;	3488	return;
		3489
		3490	EV_FREQUENT_CHECK;
2670		3491
2671	ev_start (EV_A_ (W)w, ++forkcnt);	3492	ev_start (EV_A_ (W)w, ++forkcnt);
2672	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3493	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2673	forks [forkcnt - 1] = w;	3494	forks [forkcnt - 1] = w;
		3495
		3496	EV_FREQUENT_CHECK;
2674	}	3497	}
2675		3498
2676	void	3499	void
2677	ev_fork_stop (EV_P_ ev_fork *w)	3500	ev_fork_stop (EV_P_ ev_fork *w)
2678	{	3501	{
2679	clear_pending (EV_A_ (W)w);	3502	clear_pending (EV_A_ (W)w);
2680	if (expect_false (!ev_is_active (w)))	3503	if (expect_false (!ev_is_active (w)))
2681	return;	3504	return;
2682		3505
		3506	EV_FREQUENT_CHECK;
		3507
2683	{	3508	{
2684	int active = ev_active (w);	3509	int active = ev_active (w);
2685		3510
2686	forks [active - 1] = forks [--forkcnt];	3511	forks [active - 1] = forks [--forkcnt];
2687	ev_active (forks [active - 1]) = active;	3512	ev_active (forks [active - 1]) = active;
2688	}	3513	}
2689		3514
2690	ev_stop (EV_A_ (W)w);	3515	ev_stop (EV_A_ (W)w);
		3516
		3517	EV_FREQUENT_CHECK;
2691	}	3518	}
2692	#endif	3519	#endif
2693		3520
2694	#if EV_ASYNC_ENABLE	3521	#if EV_ASYNC_ENABLE
2695	void	3522	void
…		…
2697	{	3524	{
2698	if (expect_false (ev_is_active (w)))	3525	if (expect_false (ev_is_active (w)))
2699	return;	3526	return;
2700		3527
2701	evpipe_init (EV_A);	3528	evpipe_init (EV_A);
		3529
		3530	EV_FREQUENT_CHECK;
2702		3531
2703	ev_start (EV_A_ (W)w, ++asynccnt);	3532	ev_start (EV_A_ (W)w, ++asynccnt);
2704	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3533	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2705	asyncs [asynccnt - 1] = w;	3534	asyncs [asynccnt - 1] = w;
		3535
		3536	EV_FREQUENT_CHECK;
2706	}	3537	}
2707		3538
2708	void	3539	void
2709	ev_async_stop (EV_P_ ev_async *w)	3540	ev_async_stop (EV_P_ ev_async *w)
2710	{	3541	{
2711	clear_pending (EV_A_ (W)w);	3542	clear_pending (EV_A_ (W)w);
2712	if (expect_false (!ev_is_active (w)))	3543	if (expect_false (!ev_is_active (w)))
2713	return;	3544	return;
2714		3545
		3546	EV_FREQUENT_CHECK;
		3547
2715	{	3548	{
2716	int active = ev_active (w);	3549	int active = ev_active (w);
2717		3550
2718	asyncs [active - 1] = asyncs [--asynccnt];	3551	asyncs [active - 1] = asyncs [--asynccnt];
2719	ev_active (asyncs [active - 1]) = active;	3552	ev_active (asyncs [active - 1]) = active;
2720	}	3553	}
2721		3554
2722	ev_stop (EV_A_ (W)w);	3555	ev_stop (EV_A_ (W)w);
		3556
		3557	EV_FREQUENT_CHECK;
2723	}	3558	}
2724		3559
2725	void	3560	void
2726	ev_async_send (EV_P_ ev_async *w)	3561	ev_async_send (EV_P_ ev_async *w)
2727	{	3562	{
2728	w->sent = 1;	3563	w->sent = 1;
2729	evpipe_write (EV_A_ &gotasync);	3564	evpipe_write (EV_A_ &async_pending);
2730	}	3565	}
2731	#endif	3566	#endif
2732		3567
2733	/*****************************************************************************/	3568	/*****************************************************************************/
2734		3569
…		…
2744	once_cb (EV_P_ struct ev_once *once, int revents)	3579	once_cb (EV_P_ struct ev_once *once, int revents)
2745	{	3580	{
2746	void (*cb)(int revents, void *arg) = once->cb;	3581	void (*cb)(int revents, void *arg) = once->cb;
2747	void *arg = once->arg;	3582	void *arg = once->arg;
2748		3583
2749	ev_io_stop (EV_A_ &once->io);	3584	ev_io_stop (EV_A_ &once->io);
2750	ev_timer_stop (EV_A_ &once->to);	3585	ev_timer_stop (EV_A_ &once->to);
2751	ev_free (once);	3586	ev_free (once);
2752		3587
2753	cb (revents, arg);	3588	cb (revents, arg);
2754	}	3589	}
2755		3590
2756	static void	3591	static void
2757	once_cb_io (EV_P_ ev_io *w, int revents)	3592	once_cb_io (EV_P_ ev_io *w, int revents)
2758	{	3593	{
2759	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3594	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3595
		3596	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2760	}	3597	}
2761		3598
2762	static void	3599	static void
2763	once_cb_to (EV_P_ ev_timer *w, int revents)	3600	once_cb_to (EV_P_ ev_timer *w, int revents)
2764	{	3601	{
2765	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3602	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3603
		3604	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2766	}	3605	}
2767		3606
2768	void	3607	void
2769	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3608	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2770	{	3609	{
…		…
2792	ev_timer_set (&once->to, timeout, 0.);	3631	ev_timer_set (&once->to, timeout, 0.);
2793	ev_timer_start (EV_A_ &once->to);	3632	ev_timer_start (EV_A_ &once->to);
2794	}	3633	}
2795	}	3634	}
2796		3635
		3636	/*****************************************************************************/
		3637
		3638	#if EV_WALK_ENABLE
		3639	void
		3640	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3641	{
		3642	int i, j;
		3643	ev_watcher_list *wl, *wn;
		3644
		3645	if (types & (EV_IO | EV_EMBED))
		3646	for (i = 0; i < anfdmax; ++i)
		3647	for (wl = anfds [i].head; wl; )
		3648	{
		3649	wn = wl->next;
		3650
		3651	#if EV_EMBED_ENABLE
		3652	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3653	{
		3654	if (types & EV_EMBED)
		3655	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3656	}
		3657	else
		3658	#endif
		3659	#if EV_USE_INOTIFY
		3660	if (ev_cb ((ev_io *)wl) == infy_cb)
		3661	;
		3662	else
		3663	#endif
		3664	if ((ev_io *)wl != &pipe_w)
		3665	if (types & EV_IO)
		3666	cb (EV_A_ EV_IO, wl);
		3667
		3668	wl = wn;
		3669	}
		3670
		3671	if (types & (EV_TIMER | EV_STAT))
		3672	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3673	#if EV_STAT_ENABLE
		3674	/*TODO: timer is not always active*/
		3675	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3676	{
		3677	if (types & EV_STAT)
		3678	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3679	}
		3680	else
		3681	#endif
		3682	if (types & EV_TIMER)
		3683	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3684
		3685	#if EV_PERIODIC_ENABLE
		3686	if (types & EV_PERIODIC)
		3687	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3688	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3689	#endif
		3690
		3691	#if EV_IDLE_ENABLE
		3692	if (types & EV_IDLE)
		3693	for (j = NUMPRI; i--; )
		3694	for (i = idlecnt [j]; i--; )
		3695	cb (EV_A_ EV_IDLE, idles [j][i]);
		3696	#endif
		3697
		3698	#if EV_FORK_ENABLE
		3699	if (types & EV_FORK)
		3700	for (i = forkcnt; i--; )
		3701	if (ev_cb (forks [i]) != embed_fork_cb)
		3702	cb (EV_A_ EV_FORK, forks [i]);
		3703	#endif
		3704
		3705	#if EV_ASYNC_ENABLE
		3706	if (types & EV_ASYNC)
		3707	for (i = asynccnt; i--; )
		3708	cb (EV_A_ EV_ASYNC, asyncs [i]);
		3709	#endif
		3710
		3711	if (types & EV_PREPARE)
		3712	for (i = preparecnt; i--; )
		3713	#if EV_EMBED_ENABLE
		3714	if (ev_cb (prepares [i]) != embed_prepare_cb)
		3715	#endif
		3716	cb (EV_A_ EV_PREPARE, prepares [i]);
		3717
		3718	if (types & EV_CHECK)
		3719	for (i = checkcnt; i--; )
		3720	cb (EV_A_ EV_CHECK, checks [i]);
		3721
		3722	if (types & EV_SIGNAL)
		3723	for (i = 0; i < EV_NSIG - 1; ++i)
		3724	for (wl = signals [i].head; wl; )
		3725	{
		3726	wn = wl->next;
		3727	cb (EV_A_ EV_SIGNAL, wl);
		3728	wl = wn;
		3729	}
		3730
		3731	if (types & EV_CHILD)
		3732	for (i = EV_PID_HASHSIZE; i--; )
		3733	for (wl = childs [i]; wl; )
		3734	{
		3735	wn = wl->next;
		3736	cb (EV_A_ EV_CHILD, wl);
		3737	wl = wn;
		3738	}
		3739	/* EV_STAT 0x00001000 /* stat data changed */
		3740	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		3741	}
		3742	#endif
		3743
2797	#if EV_MULTIPLICITY	3744	#if EV_MULTIPLICITY
2798	#include "ev_wrap.h"	3745	#include "ev_wrap.h"
2799	#endif	3746	#endif
2800		3747
2801	#ifdef __cplusplus	3748	#ifdef __cplusplus

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