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Comparing libev/ev.c (file contents):
Revision 1.296 by root, Thu Jul 9 09:11:20 2009 UTC vs.
Revision 1.342 by root, Mon Mar 29 12:40:57 2010 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009 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	*
…		…
79	# endif	79	# endif
80	# endif	80	# endif
81		81
82	# ifndef EV_USE_NANOSLEEP	82	# ifndef EV_USE_NANOSLEEP
83	# if HAVE_NANOSLEEP	83	# if HAVE_NANOSLEEP
84	# define EV_USE_NANOSLEEP 1	84	# define EV_USE_NANOSLEEP EV_FEATURE_OS
85	# else	85	# else
86	# define EV_USE_NANOSLEEP 0	86	# define EV_USE_NANOSLEEP 0
87	# endif	87	# endif
88	# endif	88	# endif
89		89
90	# ifndef EV_USE_SELECT	90	# ifndef EV_USE_SELECT
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H	91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
92	# define EV_USE_SELECT 1	92	# define EV_USE_SELECT EV_FEATURE_BACKENDS
93	# else	93	# else
94	# define EV_USE_SELECT 0	94	# define EV_USE_SELECT 0
95	# endif	95	# endif
96	# endif	96	# endif
97		97
98	# ifndef EV_USE_POLL	98	# ifndef EV_USE_POLL
99	# if HAVE_POLL && HAVE_POLL_H	99	# if HAVE_POLL && HAVE_POLL_H
100	# define EV_USE_POLL 1	100	# define EV_USE_POLL EV_FEATURE_BACKENDS
101	# else	101	# else
102	# define EV_USE_POLL 0	102	# define EV_USE_POLL 0
103	# endif	103	# endif
104	# endif	104	# endif
105		105
106	# ifndef EV_USE_EPOLL	106	# ifndef EV_USE_EPOLL
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108	# define EV_USE_EPOLL 1	108	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109	# else	109	# else
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
121		121
122	# ifndef EV_USE_PORT	122	# ifndef EV_USE_PORT
123	# if HAVE_PORT_H && HAVE_PORT_CREATE	123	# if HAVE_PORT_H && HAVE_PORT_CREATE
124	# define EV_USE_PORT 1	124	# define EV_USE_PORT EV_FEATURE_BACKENDS
125	# else	125	# else
126	# define EV_USE_PORT 0	126	# define EV_USE_PORT 0
127	# endif	127	# endif
128	# endif	128	# endif
129		129
130	# ifndef EV_USE_INOTIFY	130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132	# define EV_USE_INOTIFY 1	132	# define EV_USE_INOTIFY EV_FEATURE_OS
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD EV_FEATURE_OS
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD EV_FEATURE_OS
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
143	# endif	151	# endif
144	# endif	152	# endif
145		153
146	#endif	154	#endif
147		155
148	#include <math.h>	156	#include <math.h>
149	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
150	#include <fcntl.h>	159	#include <fcntl.h>
151	#include <stddef.h>	160	#include <stddef.h>
152		161
153	#include <stdio.h>	162	#include <stdio.h>
154		163
155	#include <assert.h>	164	#include <assert.h>
156	#include <errno.h>	165	#include <errno.h>
157	#include <sys/types.h>	166	#include <sys/types.h>
158	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
159		169
160	#include <signal.h>	170	#include <signal.h>
161		171
162	#ifdef EV_H	172	#ifdef EV_H
163	# include EV_H	173	# include EV_H
…		…
174	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
175	# include <windows.h>	185	# include <windows.h>
176	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
177	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
178	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
179	#endif	190	#endif
180		191
181	/* 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 */
		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	/* but consider reporting it, too! :) */
		219	# define EV_NSIG 65
		220	#endif
182		221
183	#ifndef EV_USE_CLOCK_SYSCALL	222	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	223	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	224	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186	# else	225	# else
187	# define EV_USE_CLOCK_SYSCALL 0	226	# define EV_USE_CLOCK_SYSCALL 0
188	# endif	227	# endif
189	#endif	228	#endif
190		229
191	#ifndef EV_USE_MONOTONIC	230	#ifndef EV_USE_MONOTONIC
192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	231	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193	# define EV_USE_MONOTONIC 1	232	# define EV_USE_MONOTONIC EV_FEATURE_OS
194	# else	233	# else
195	# define EV_USE_MONOTONIC 0	234	# define EV_USE_MONOTONIC 0
196	# endif	235	# endif
197	#endif	236	#endif
198		237
…		…
200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	239	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201	#endif	240	#endif
202		241
203	#ifndef EV_USE_NANOSLEEP	242	#ifndef EV_USE_NANOSLEEP
204	# if _POSIX_C_SOURCE >= 199309L	243	# if _POSIX_C_SOURCE >= 199309L
205	# define EV_USE_NANOSLEEP 1	244	# define EV_USE_NANOSLEEP EV_FEATURE_OS
206	# else	245	# else
207	# define EV_USE_NANOSLEEP 0	246	# define EV_USE_NANOSLEEP 0
208	# endif	247	# endif
209	#endif	248	#endif
210		249
211	#ifndef EV_USE_SELECT	250	#ifndef EV_USE_SELECT
212	# define EV_USE_SELECT 1	251	# define EV_USE_SELECT EV_FEATURE_BACKENDS
213	#endif	252	#endif
214		253
215	#ifndef EV_USE_POLL	254	#ifndef EV_USE_POLL
216	# ifdef _WIN32	255	# ifdef _WIN32
217	# define EV_USE_POLL 0	256	# define EV_USE_POLL 0
218	# else	257	# else
219	# define EV_USE_POLL 1	258	# define EV_USE_POLL EV_FEATURE_BACKENDS
220	# endif	259	# endif
221	#endif	260	#endif
222		261
223	#ifndef EV_USE_EPOLL	262	#ifndef EV_USE_EPOLL
224	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	263	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225	# define EV_USE_EPOLL 1	264	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226	# else	265	# else
227	# define EV_USE_EPOLL 0	266	# define EV_USE_EPOLL 0
228	# endif	267	# endif
229	#endif	268	#endif
230		269
…		…
236	# define EV_USE_PORT 0	275	# define EV_USE_PORT 0
237	#endif	276	#endif
238		277
239	#ifndef EV_USE_INOTIFY	278	#ifndef EV_USE_INOTIFY
240	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	279	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241	# define EV_USE_INOTIFY 1	280	# define EV_USE_INOTIFY EV_FEATURE_OS
242	# else	281	# else
243	# define EV_USE_INOTIFY 0	282	# define EV_USE_INOTIFY 0
244	# endif	283	# endif
245	#endif	284	#endif
246		285
247	#ifndef EV_PID_HASHSIZE	286	#ifndef EV_PID_HASHSIZE
248	# if EV_MINIMAL	287	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249	# define EV_PID_HASHSIZE 1
250	# else
251	# define EV_PID_HASHSIZE 16
252	# endif
253	#endif	288	#endif
254		289
255	#ifndef EV_INOTIFY_HASHSIZE	290	#ifndef EV_INOTIFY_HASHSIZE
256	# if EV_MINIMAL	291	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257	# define EV_INOTIFY_HASHSIZE 1
258	# else
259	# define EV_INOTIFY_HASHSIZE 16
260	# endif
261	#endif	292	#endif
262		293
263	#ifndef EV_USE_EVENTFD	294	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	295	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	296	# define EV_USE_EVENTFD EV_FEATURE_OS
266	# else	297	# else
267	# define EV_USE_EVENTFD 0	298	# define EV_USE_EVENTFD 0
		299	# endif
		300	#endif
		301
		302	#ifndef EV_USE_SIGNALFD
		303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		304	# define EV_USE_SIGNALFD EV_FEATURE_OS
		305	# else
		306	# define EV_USE_SIGNALFD 0
268	# endif	307	# endif
269	#endif	308	#endif
270		309
271	#if 0 /* debugging */	310	#if 0 /* debugging */
272	# define EV_VERIFY 3	311	# define EV_VERIFY 3
273	# define EV_USE_4HEAP 1	312	# define EV_USE_4HEAP 1
274	# define EV_HEAP_CACHE_AT 1	313	# define EV_HEAP_CACHE_AT 1
275	#endif	314	#endif
276		315
277	#ifndef EV_VERIFY	316	#ifndef EV_VERIFY
278	# define EV_VERIFY !EV_MINIMAL	317	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279	#endif	318	#endif
280		319
281	#ifndef EV_USE_4HEAP	320	#ifndef EV_USE_4HEAP
282	# define EV_USE_4HEAP !EV_MINIMAL	321	# define EV_USE_4HEAP EV_FEATURE_DATA
283	#endif	322	#endif
284		323
285	#ifndef EV_HEAP_CACHE_AT	324	#ifndef EV_HEAP_CACHE_AT
286	# define EV_HEAP_CACHE_AT !EV_MINIMAL	325	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287	#endif	326	#endif
288		327
289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	328	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290	/* which makes programs even slower. might work on other unices, too. */	329	/* which makes programs even slower. might work on other unices, too. */
291	#if EV_USE_CLOCK_SYSCALL	330	#if EV_USE_CLOCK_SYSCALL
…		…
300	# endif	339	# endif
301	#endif	340	#endif
302		341
303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	342	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304		343
		344	#ifdef _AIX
		345	/* AIX has a completely broken poll.h header */
		346	# undef EV_USE_POLL
		347	# define EV_USE_POLL 0
		348	#endif
		349
305	#ifndef CLOCK_MONOTONIC	350	#ifndef CLOCK_MONOTONIC
306	# undef EV_USE_MONOTONIC	351	# undef EV_USE_MONOTONIC
307	# define EV_USE_MONOTONIC 0	352	# define EV_USE_MONOTONIC 0
308	#endif	353	#endif
309		354
…		…
339	#endif	384	#endif
340		385
341	#if EV_USE_EVENTFD	386	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	387	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	388	# include <stdint.h>
		389	# ifndef EFD_NONBLOCK
		390	# define EFD_NONBLOCK O_NONBLOCK
		391	# endif
		392	# ifndef EFD_CLOEXEC
		393	# ifdef O_CLOEXEC
		394	# define EFD_CLOEXEC O_CLOEXEC
		395	# else
		396	# define EFD_CLOEXEC 02000000
		397	# endif
		398	# endif
344	# ifdef __cplusplus	399	# ifdef __cplusplus
345	extern "C" {	400	extern "C" {
346	# endif	401	# endif
347	int eventfd (unsigned int initval, int flags);	402	int (eventfd) (unsigned int initval, int flags);
348	# ifdef __cplusplus	403	# ifdef __cplusplus
349	}	404	}
350	# endif	405	# endif
351	#endif	406	#endif
352		407
		408	#if EV_USE_SIGNALFD
		409	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		410	# include <stdint.h>
		411	# ifndef SFD_NONBLOCK
		412	# define SFD_NONBLOCK O_NONBLOCK
		413	# endif
		414	# ifndef SFD_CLOEXEC
		415	# ifdef O_CLOEXEC
		416	# define SFD_CLOEXEC O_CLOEXEC
		417	# else
		418	# define SFD_CLOEXEC 02000000
		419	# endif
		420	# endif
		421	# ifdef __cplusplus
		422	extern "C" {
		423	# endif
		424	int signalfd (int fd, const sigset_t *mask, int flags);
		425
		426	struct signalfd_siginfo
		427	{
		428	uint32_t ssi_signo;
		429	char pad[128 - sizeof (uint32_t)];
		430	};
		431	# ifdef __cplusplus
		432	}
		433	# endif
		434	#endif
		435
		436
353	/**/	437	/**/
354		438
355	#if EV_VERIFY >= 3	439	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	440	# define EV_FREQUENT_CHECK ev_verify (EV_A)
357	#else	441	#else
358	# define EV_FREQUENT_CHECK do { } while (0)	442	# define EV_FREQUENT_CHECK do { } while (0)
359	#endif	443	#endif
360		444
361	/*	445	/*
…		…
368	*/	452	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	453	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		454
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	455	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	456	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374		457
375	#if __GNUC__ >= 4	458	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	459	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	460	# define noinline __attribute__ ((noinline))
378	#else	461	#else
…		…
385		468
386	#define expect_false(expr) expect ((expr) != 0, 0)	469	#define expect_false(expr) expect ((expr) != 0, 0)
387	#define expect_true(expr) expect ((expr) != 0, 1)	470	#define expect_true(expr) expect ((expr) != 0, 1)
388	#define inline_size static inline	471	#define inline_size static inline
389		472
390	#if EV_MINIMAL	473	#if EV_FEATURE_CODE
		474	# define inline_speed static inline
		475	#else
391	# define inline_speed static noinline	476	# define inline_speed static noinline
392	#else
393	# define inline_speed static inline
394	#endif	477	#endif
395		478
396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	479	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397		480
398	#if EV_MINPRI == EV_MAXPRI	481	#if EV_MINPRI == EV_MAXPRI
…		…
419		502
420	#if EV_USE_MONOTONIC	503	#if EV_USE_MONOTONIC
421	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	504	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
422	#endif	505	#endif
423		506
		507	#ifndef EV_FD_TO_WIN32_HANDLE
		508	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		509	#endif
		510	#ifndef EV_WIN32_HANDLE_TO_FD
		511	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		512	#endif
		513	#ifndef EV_WIN32_CLOSE_FD
		514	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		515	#endif
		516
424	#ifdef _WIN32	517	#ifdef _WIN32
425	# include "ev_win32.c"	518	# include "ev_win32.c"
426	#endif	519	#endif
427		520
428	/*****************************************************************************/	521	/*****************************************************************************/
		522
		523	#if EV_AVOID_STDIO
		524	static void noinline
		525	ev_printerr (const char *msg)
		526	{
		527	write (STDERR_FILENO, msg, strlen (msg));
		528	}
		529	#endif
429		530
430	static void (*syserr_cb)(const char *msg);	531	static void (*syserr_cb)(const char *msg);
431		532
432	void	533	void
433	ev_set_syserr_cb (void (*cb)(const char *msg))	534	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
443		544
444	if (syserr_cb)	545	if (syserr_cb)
445	syserr_cb (msg);	546	syserr_cb (msg);
446	else	547	else
447	{	548	{
		549	#if EV_AVOID_STDIO
		550	const char *err = strerror (errno);
		551
		552	ev_printerr (msg);
		553	ev_printerr (": ");
		554	ev_printerr (err);
		555	ev_printerr ("\n");
		556	#else
448	perror (msg);	557	perror (msg);
		558	#endif
449	abort ();	559	abort ();
450	}	560	}
451	}	561	}
452		562
453	static void *	563	static void *
454	ev_realloc_emul (void *ptr, long size)	564	ev_realloc_emul (void *ptr, long size)
455	{	565	{
		566	#if __GLIBC__
		567	return realloc (ptr, size);
		568	#else
456	/* some systems, notably openbsd and darwin, fail to properly	569	/* some systems, notably openbsd and darwin, fail to properly
457	* implement realloc (x, 0) (as required by both ansi c-98 and	570	* implement realloc (x, 0) (as required by both ansi c-89 and
458	* the single unix specification, so work around them here.	571	* the single unix specification, so work around them here.
459	*/	572	*/
460		573
461	if (size)	574	if (size)
462	return realloc (ptr, size);	575	return realloc (ptr, size);
463		576
464	free (ptr);	577	free (ptr);
465	return 0;	578	return 0;
		579	#endif
466	}	580	}
467		581
468	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	582	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469		583
470	void	584	void
…		…
478	{	592	{
479	ptr = alloc (ptr, size);	593	ptr = alloc (ptr, size);
480		594
481	if (!ptr && size)	595	if (!ptr && size)
482	{	596	{
		597	#if EV_AVOID_STDIO
		598	ev_printerr ("libev: memory allocation failed, aborting.\n");
		599	#else
483	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	600	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		601	#endif
484	abort ();	602	abort ();
485	}	603	}
486		604
487	return ptr;	605	return ptr;
488	}	606	}
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	608	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	609	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		610
493	/*****************************************************************************/	611	/*****************************************************************************/
494		612
		613	/* set in reify when reification needed */
		614	#define EV_ANFD_REIFY 1
		615
495	/* file descriptor info structure */	616	/* file descriptor info structure */
496	typedef struct	617	typedef struct
497	{	618	{
498	WL head;	619	WL head;
499	unsigned char events; /* the events watched for */	620	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	621	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	622	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	623	unsigned char unused;
503	#if EV_USE_EPOLL	624	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	625	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	626	#endif
…		…
567		688
568	static int ev_default_loop_ptr;	689	static int ev_default_loop_ptr;
569		690
570	#endif	691	#endif
571		692
		693	#if EV_FEATURE_API
		694	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		695	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		696	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		697	#else
		698	# define EV_RELEASE_CB (void)0
		699	# define EV_ACQUIRE_CB (void)0
		700	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		701	#endif
		702
		703	#define EVUNLOOP_RECURSE 0x80
		704
572	/*****************************************************************************/	705	/*****************************************************************************/
573		706
574	#ifndef EV_HAVE_EV_TIME	707	#ifndef EV_HAVE_EV_TIME
575	ev_tstamp	708	ev_tstamp
576	ev_time (void)	709	ev_time (void)
…		…
632		765
633	tv.tv_sec = (time_t)delay;	766	tv.tv_sec = (time_t)delay;
634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	767	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635		768
636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	769	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637	/* somehting not guaranteed by newer posix versions, but guaranteed */	770	/* something not guaranteed by newer posix versions, but guaranteed */
638	/* by older ones */	771	/* by older ones */
639	select (0, 0, 0, 0, &tv);	772	select (0, 0, 0, 0, &tv);
640	#endif	773	#endif
641	}	774	}
642	}	775	}
…		…
750	}	883	}
751		884
752	/*****************************************************************************/	885	/*****************************************************************************/
753		886
754	inline_speed void	887	inline_speed void
755	fd_event (EV_P_ int fd, int revents)	888	fd_event_nocheck (EV_P_ int fd, int revents)
756	{	889	{
757	ANFD *anfd = anfds + fd;	890	ANFD *anfd = anfds + fd;
758	ev_io *w;	891	ev_io *w;
759		892
760	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	893	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
764	if (ev)	897	if (ev)
765	ev_feed_event (EV_A_ (W)w, ev);	898	ev_feed_event (EV_A_ (W)w, ev);
766	}	899	}
767	}	900	}
768		901
		902	/* do not submit kernel events for fds that have reify set */
		903	/* because that means they changed while we were polling for new events */
		904	inline_speed void
		905	fd_event (EV_P_ int fd, int revents)
		906	{
		907	ANFD *anfd = anfds + fd;
		908
		909	if (expect_true (!anfd->reify))
		910	fd_event_nocheck (EV_A_ fd, revents);
		911	}
		912
769	void	913	void
770	ev_feed_fd_event (EV_P_ int fd, int revents)	914	ev_feed_fd_event (EV_P_ int fd, int revents)
771	{	915	{
772	if (fd >= 0 && fd < anfdmax)	916	if (fd >= 0 && fd < anfdmax)
773	fd_event (EV_A_ fd, revents);	917	fd_event_nocheck (EV_A_ fd, revents);
774	}	918	}
775		919
776	/* make sure the external fd watch events are in-sync */	920	/* make sure the external fd watch events are in-sync */
777	/* with the kernel/libev internal state */	921	/* with the kernel/libev internal state */
778	inline_size void	922	inline_size void
…		…
793		937
794	#if EV_SELECT_IS_WINSOCKET	938	#if EV_SELECT_IS_WINSOCKET
795	if (events)	939	if (events)
796	{	940	{
797	unsigned long arg;	941	unsigned long arg;
798	#ifdef EV_FD_TO_WIN32_HANDLE
799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	942	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
800	#else
801	anfd->handle = _get_osfhandle (fd);
802	#endif
803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	943	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
804	}	944	}
805	#endif	945	#endif
806		946
807	{	947	{
…		…
845	ev_io_stop (EV_A_ w);	985	ev_io_stop (EV_A_ w);
846	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	986	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
847	}	987	}
848	}	988	}
849		989
850	/* check whether the given fd is atcually valid, for error recovery */	990	/* check whether the given fd is actually valid, for error recovery */
851	inline_size int	991	inline_size int
852	fd_valid (int fd)	992	fd_valid (int fd)
853	{	993	{
854	#ifdef _WIN32	994	#ifdef _WIN32
855	return _get_osfhandle (fd) != -1;	995	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856	#else	996	#else
857	return fcntl (fd, F_GETFD) != -1;	997	return fcntl (fd, F_GETFD) != -1;
858	#endif	998	#endif
859	}	999	}
860		1000
…		…
878		1018
879	for (fd = anfdmax; fd--; )	1019	for (fd = anfdmax; fd--; )
880	if (anfds [fd].events)	1020	if (anfds [fd].events)
881	{	1021	{
882	fd_kill (EV_A_ fd);	1022	fd_kill (EV_A_ fd);
883	return;	1023	break;
884	}	1024	}
885	}	1025	}
886		1026
887	/* usually called after fork if backend needs to re-arm all fds from scratch */	1027	/* usually called after fork if backend needs to re-arm all fds from scratch */
888	static void noinline	1028	static void noinline
…		…
893	for (fd = 0; fd < anfdmax; ++fd)	1033	for (fd = 0; fd < anfdmax; ++fd)
894	if (anfds [fd].events)	1034	if (anfds [fd].events)
895	{	1035	{
896	anfds [fd].events = 0;	1036	anfds [fd].events = 0;
897	anfds [fd].emask = 0;	1037	anfds [fd].emask = 0;
898	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1038	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899	}	1039	}
		1040	}
		1041
		1042	/* used to prepare libev internal fd's */
		1043	/* this is not fork-safe */
		1044	inline_speed void
		1045	fd_intern (int fd)
		1046	{
		1047	#ifdef _WIN32
		1048	unsigned long arg = 1;
		1049	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1050	#else
		1051	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1052	fcntl (fd, F_SETFL, O_NONBLOCK);
		1053	#endif
900	}	1054	}
901		1055
902	/*****************************************************************************/	1056	/*****************************************************************************/
903		1057
904	/*	1058	/*
…		…
978		1132
979	for (;;)	1133	for (;;)
980	{	1134	{
981	int c = k << 1;	1135	int c = k << 1;
982		1136
983	if (c > N + HEAP0 - 1)	1137	if (c >= N + HEAP0)
984	break;	1138	break;
985		1139
986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1140	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987	? 1 : 0;	1141	? 1 : 0;
988		1142
…		…
1024		1178
1025	/* move an element suitably so it is in a correct place */	1179	/* move an element suitably so it is in a correct place */
1026	inline_size void	1180	inline_size void
1027	adjustheap (ANHE *heap, int N, int k)	1181	adjustheap (ANHE *heap, int N, int k)
1028	{	1182	{
1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1183	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030	upheap (heap, k);	1184	upheap (heap, k);
1031	else	1185	else
1032	downheap (heap, N, k);	1186	downheap (heap, N, k);
1033	}	1187	}
1034		1188
…		…
1047	/*****************************************************************************/	1201	/*****************************************************************************/
1048		1202
1049	/* associate signal watchers to a signal signal */	1203	/* associate signal watchers to a signal signal */
1050	typedef struct	1204	typedef struct
1051	{	1205	{
		1206	EV_ATOMIC_T pending;
		1207	#if EV_MULTIPLICITY
		1208	EV_P;
		1209	#endif
1052	WL head;	1210	WL head;
1053	EV_ATOMIC_T gotsig;
1054	} ANSIG;	1211	} ANSIG;
1055		1212
1056	static ANSIG *signals;	1213	static ANSIG signals [EV_NSIG - 1];
1057	static int signalmax;
1058
1059	static EV_ATOMIC_T gotsig;
1060		1214
1061	/*****************************************************************************/	1215	/*****************************************************************************/
1062		1216
1063	/* used to prepare libev internal fd's */	1217	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064	/* this is not fork-safe */
1065	inline_speed void
1066	fd_intern (int fd)
1067	{
1068	#ifdef _WIN32
1069	unsigned long arg = 1;
1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071	#else
1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
1073	fcntl (fd, F_SETFL, O_NONBLOCK);
1074	#endif
1075	}
1076		1218
1077	static void noinline	1219	static void noinline
1078	evpipe_init (EV_P)	1220	evpipe_init (EV_P)
1079	{	1221	{
1080	if (!ev_is_active (&pipe_w))	1222	if (!ev_is_active (&pipe_w))
1081	{	1223	{
1082	#if EV_USE_EVENTFD	1224	# if EV_USE_EVENTFD
		1225	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1226	if (evfd < 0 && errno == EINVAL)
1083	if ((evfd = eventfd (0, 0)) >= 0)	1227	evfd = eventfd (0, 0);
		1228
		1229	if (evfd >= 0)
1084	{	1230	{
1085	evpipe [0] = -1;	1231	evpipe [0] = -1;
1086	fd_intern (evfd);	1232	fd_intern (evfd); /* doing it twice doesn't hurt */
1087	ev_io_set (&pipe_w, evfd, EV_READ);	1233	ev_io_set (&pipe_w, evfd, EV_READ);
1088	}	1234	}
1089	else	1235	else
1090	#endif	1236	# endif
1091	{	1237	{
1092	while (pipe (evpipe))	1238	while (pipe (evpipe))
1093	ev_syserr ("(libev) error creating signal/async pipe");	1239	ev_syserr ("(libev) error creating signal/async pipe");
1094		1240
1095	fd_intern (evpipe [0]);	1241	fd_intern (evpipe [0]);
…		…
1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1252	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107	{	1253	{
1108	if (!*flag)	1254	if (!*flag)
1109	{	1255	{
1110	int old_errno = errno; /* save errno because write might clobber it */	1256	int old_errno = errno; /* save errno because write might clobber it */
		1257	char dummy;
1111		1258
1112	*flag = 1;	1259	*flag = 1;
1113		1260
1114	#if EV_USE_EVENTFD	1261	#if EV_USE_EVENTFD
1115	if (evfd >= 0)	1262	if (evfd >= 0)
…		…
1117	uint64_t counter = 1;	1264	uint64_t counter = 1;
1118	write (evfd, &counter, sizeof (uint64_t));	1265	write (evfd, &counter, sizeof (uint64_t));
1119	}	1266	}
1120	else	1267	else
1121	#endif	1268	#endif
1122	write (evpipe [1], &old_errno, 1);	1269	write (evpipe [1], &dummy, 1);
1123		1270
1124	errno = old_errno;	1271	errno = old_errno;
1125	}	1272	}
1126	}	1273	}
1127		1274
1128	/* called whenever the libev signal pipe */	1275	/* called whenever the libev signal pipe */
1129	/* got some events (signal, async) */	1276	/* got some events (signal, async) */
1130	static void	1277	static void
1131	pipecb (EV_P_ ev_io *iow, int revents)	1278	pipecb (EV_P_ ev_io *iow, int revents)
1132	{	1279	{
		1280	int i;
		1281
1133	#if EV_USE_EVENTFD	1282	#if EV_USE_EVENTFD
1134	if (evfd >= 0)	1283	if (evfd >= 0)
1135	{	1284	{
1136	uint64_t counter;	1285	uint64_t counter;
1137	read (evfd, &counter, sizeof (uint64_t));	1286	read (evfd, &counter, sizeof (uint64_t));
…		…
1141	{	1290	{
1142	char dummy;	1291	char dummy;
1143	read (evpipe [0], &dummy, 1);	1292	read (evpipe [0], &dummy, 1);
1144	}	1293	}
1145		1294
1146	if (gotsig && ev_is_default_loop (EV_A))	1295	if (sig_pending)
1147	{	1296	{
1148	int signum;	1297	sig_pending = 0;
1149	gotsig = 0;
1150		1298
1151	for (signum = signalmax; signum--; )	1299	for (i = EV_NSIG - 1; i--; )
1152	if (signals [signum].gotsig)	1300	if (expect_false (signals [i].pending))
1153	ev_feed_signal_event (EV_A_ signum + 1);	1301	ev_feed_signal_event (EV_A_ i + 1);
1154	}	1302	}
1155		1303
1156	#if EV_ASYNC_ENABLE	1304	#if EV_ASYNC_ENABLE
1157	if (gotasync)	1305	if (async_pending)
1158	{	1306	{
1159	int i;	1307	async_pending = 0;
1160	gotasync = 0;
1161		1308
1162	for (i = asynccnt; i--; )	1309	for (i = asynccnt; i--; )
1163	if (asyncs [i]->sent)	1310	if (asyncs [i]->sent)
1164	{	1311	{
1165	asyncs [i]->sent = 0;	1312	asyncs [i]->sent = 0;
…		…
1173		1320
1174	static void	1321	static void
1175	ev_sighandler (int signum)	1322	ev_sighandler (int signum)
1176	{	1323	{
1177	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1178	struct ev_loop *loop = &default_loop_struct;	1325	EV_P = signals [signum - 1].loop;
1179	#endif	1326	#endif
1180		1327
1181	#if _WIN32	1328	#ifdef _WIN32
1182	signal (signum, ev_sighandler);	1329	signal (signum, ev_sighandler);
1183	#endif	1330	#endif
1184		1331
1185	signals [signum - 1].gotsig = 1;	1332	signals [signum - 1].pending = 1;
1186	evpipe_write (EV_A_ &gotsig);	1333	evpipe_write (EV_A_ &sig_pending);
1187	}	1334	}
1188		1335
1189	void noinline	1336	void noinline
1190	ev_feed_signal_event (EV_P_ int signum)	1337	ev_feed_signal_event (EV_P_ int signum)
1191	{	1338	{
1192	WL w;	1339	WL w;
1193		1340
		1341	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1342	return;
		1343
		1344	--signum;
		1345
1194	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
1195	assert (("libev: 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 */
1196	#endif	1348	/* or, likely more useful, feeding a signal nobody is waiting for */
1197		1349
1198	--signum;	1350	if (expect_false (signals [signum].loop != EV_A))
1199
1200	if (signum < 0 || signum >= signalmax)
1201	return;	1351	return;
		1352	#endif
1202		1353
1203	signals [signum].gotsig = 0;	1354	signals [signum].pending = 0;
1204		1355
1205	for (w = signals [signum].head; w; w = w->next)	1356	for (w = signals [signum].head; w; w = w->next)
1206	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1357	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207	}	1358	}
1208		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
		1380	#endif
		1381
1209	/*****************************************************************************/	1382	/*****************************************************************************/
1210		1383
		1384	#if EV_CHILD_ENABLE
1211	static WL childs [EV_PID_HASHSIZE];	1385	static WL childs [EV_PID_HASHSIZE];
1212
1213	#ifndef _WIN32
1214		1386
1215	static ev_signal childev;	1387	static ev_signal childev;
1216		1388
1217	#ifndef WIFCONTINUED	1389	#ifndef WIFCONTINUED
1218	# define WIFCONTINUED(status) 0	1390	# define WIFCONTINUED(status) 0
…		…
1223	child_reap (EV_P_ int chain, int pid, int status)	1395	child_reap (EV_P_ int chain, int pid, int status)
1224	{	1396	{
1225	ev_child *w;	1397	ev_child *w;
1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1398	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227		1399
1228	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1400	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1229	{	1401	{
1230	if ((w->pid == pid || !w->pid)	1402	if ((w->pid == pid || !w->pid)
1231	&& (!traced || (w->flags & 1)))	1403	&& (!traced || (w->flags & 1)))
1232	{	1404	{
1233	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1405	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
1258	/* make sure we are called again until all children have been reaped */	1430	/* make sure we are called again until all children have been reaped */
1259	/* we need to do it this way so that the callback gets called before we continue */	1431	/* we need to do it this way so that the callback gets called before we continue */
1260	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1432	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261		1433
1262	child_reap (EV_A_ pid, pid, status);	1434	child_reap (EV_A_ pid, pid, status);
1263	if (EV_PID_HASHSIZE > 1)	1435	if ((EV_PID_HASHSIZE) > 1)
1264	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1436	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1265	}	1437	}
1266		1438
1267	#endif	1439	#endif
1268		1440
…		…
1335	#ifdef __APPLE__	1507	#ifdef __APPLE__
1336	/* only select works correctly on that "unix-certified" platform */	1508	/* only select works correctly on that "unix-certified" platform */
1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1509	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1510	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1339	#endif	1511	#endif
		1512	#ifdef __FreeBSD__
		1513	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1514	#endif
1340		1515
1341	return flags;	1516	return flags;
1342	}	1517	}
1343		1518
1344	unsigned int	1519	unsigned int
…		…
1357	ev_backend (EV_P)	1532	ev_backend (EV_P)
1358	{	1533	{
1359	return backend;	1534	return backend;
1360	}	1535	}
1361		1536
		1537	#if EV_FEATURE_API
1362	unsigned int	1538	unsigned int
1363	ev_loop_count (EV_P)	1539	ev_iteration (EV_P)
1364	{	1540	{
1365	return loop_count;	1541	return loop_count;
1366	}	1542	}
1367		1543
1368	unsigned int	1544	unsigned int
1369	ev_loop_depth (EV_P)	1545	ev_depth (EV_P)
1370	{	1546	{
1371	return loop_depth;	1547	return loop_depth;
1372	}	1548	}
1373		1549
1374	void	1550	void
…		…
1380	void	1556	void
1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1557	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382	{	1558	{
1383	timeout_blocktime = interval;	1559	timeout_blocktime = interval;
1384	}	1560	}
		1561
		1562	void
		1563	ev_set_userdata (EV_P_ void *data)
		1564	{
		1565	userdata = data;
		1566	}
		1567
		1568	void *
		1569	ev_userdata (EV_P)
		1570	{
		1571	return userdata;
		1572	}
		1573
		1574	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1575	{
		1576	invoke_cb = invoke_pending_cb;
		1577	}
		1578
		1579	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1580	{
		1581	release_cb = release;
		1582	acquire_cb = acquire;
		1583	}
		1584	#endif
1385		1585
1386	/* initialise a loop structure, must be zero-initialised */	1586	/* initialise a loop structure, must be zero-initialised */
1387	static void noinline	1587	static void noinline
1388	loop_init (EV_P_ unsigned int flags)	1588	loop_init (EV_P_ unsigned int flags)
1389	{	1589	{
…		…
1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1607	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408	have_monotonic = 1;	1608	have_monotonic = 1;
1409	}	1609	}
1410	#endif	1610	#endif
1411		1611
		1612	/* pid check not overridable via env */
		1613	#ifndef _WIN32
		1614	if (flags & EVFLAG_FORKCHECK)
		1615	curpid = getpid ();
		1616	#endif
		1617
		1618	if (!(flags & EVFLAG_NOENV)
		1619	&& !enable_secure ()
		1620	&& getenv ("LIBEV_FLAGS"))
		1621	flags = atoi (getenv ("LIBEV_FLAGS"));
		1622
1412	ev_rt_now = ev_time ();	1623	ev_rt_now = ev_time ();
1413	mn_now = get_clock ();	1624	mn_now = get_clock ();
1414	now_floor = mn_now;	1625	now_floor = mn_now;
1415	rtmn_diff = ev_rt_now - mn_now;	1626	rtmn_diff = ev_rt_now - mn_now;
		1627	#if EV_FEATURE_API
1416	invoke_cb = ev_invoke_pending;	1628	invoke_cb = ev_invoke_pending;
		1629	#endif
1417		1630
1418	io_blocktime = 0.;	1631	io_blocktime = 0.;
1419	timeout_blocktime = 0.;	1632	timeout_blocktime = 0.;
1420	backend = 0;	1633	backend = 0;
1421	backend_fd = -1;	1634	backend_fd = -1;
1422	gotasync = 0;	1635	sig_pending = 0;
		1636	#if EV_ASYNC_ENABLE
		1637	async_pending = 0;
		1638	#endif
1423	#if EV_USE_INOTIFY	1639	#if EV_USE_INOTIFY
1424	fs_fd = -2;	1640	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1425	#endif	1641	#endif
1426		1642	#if EV_USE_SIGNALFD
1427	/* pid check not overridable via env */	1643	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1428	#ifndef _WIN32
1429	if (flags & EVFLAG_FORKCHECK)
1430	curpid = getpid ();
1431	#endif	1644	#endif
1432
1433	if (!(flags & EVFLAG_NOENV)
1434	&& !enable_secure ()
1435	&& getenv ("LIBEV_FLAGS"))
1436	flags = atoi (getenv ("LIBEV_FLAGS"));
1437		1645
1438	if (!(flags & 0x0000ffffU))	1646	if (!(flags & 0x0000ffffU))
1439	flags |= ev_recommended_backends ();	1647	flags |= ev_recommended_backends ();
1440		1648
1441	#if EV_USE_PORT	1649	#if EV_USE_PORT
…		…
1454	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1662	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1455	#endif	1663	#endif
1456		1664
1457	ev_prepare_init (&pending_w, pendingcb);	1665	ev_prepare_init (&pending_w, pendingcb);
1458		1666
		1667	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1459	ev_init (&pipe_w, pipecb);	1668	ev_init (&pipe_w, pipecb);
1460	ev_set_priority (&pipe_w, EV_MAXPRI);	1669	ev_set_priority (&pipe_w, EV_MAXPRI);
		1670	#endif
1461	}	1671	}
1462	}	1672	}
1463		1673
1464	/* free up a loop structure */	1674	/* free up a loop structure */
1465	static void noinline	1675	static void noinline
…		…
1467	{	1677	{
1468	int i;	1678	int i;
1469		1679
1470	if (ev_is_active (&pipe_w))	1680	if (ev_is_active (&pipe_w))
1471	{	1681	{
1472	ev_ref (EV_A); /* signal watcher */	1682	/*ev_ref (EV_A);*/
1473	ev_io_stop (EV_A_ &pipe_w);	1683	/*ev_io_stop (EV_A_ &pipe_w);*/
1474		1684
1475	#if EV_USE_EVENTFD	1685	#if EV_USE_EVENTFD
1476	if (evfd >= 0)	1686	if (evfd >= 0)
1477	close (evfd);	1687	close (evfd);
1478	#endif	1688	#endif
1479		1689
1480	if (evpipe [0] >= 0)	1690	if (evpipe [0] >= 0)
1481	{	1691	{
1482	close (evpipe [0]);	1692	EV_WIN32_CLOSE_FD (evpipe [0]);
1483	close (evpipe [1]);	1693	EV_WIN32_CLOSE_FD (evpipe [1]);
1484	}	1694	}
1485	}	1695	}
		1696
		1697	#if EV_USE_SIGNALFD
		1698	if (ev_is_active (&sigfd_w))
		1699	close (sigfd);
		1700	#endif
1486		1701
1487	#if EV_USE_INOTIFY	1702	#if EV_USE_INOTIFY
1488	if (fs_fd >= 0)	1703	if (fs_fd >= 0)
1489	close (fs_fd);	1704	close (fs_fd);
1490	#endif	1705	#endif
…		…
1514	#if EV_IDLE_ENABLE	1729	#if EV_IDLE_ENABLE
1515	array_free (idle, [i]);	1730	array_free (idle, [i]);
1516	#endif	1731	#endif
1517	}	1732	}
1518		1733
1519	ev_free (anfds); anfdmax = 0;	1734	ev_free (anfds); anfds = 0; anfdmax = 0;
1520		1735
1521	/* have to use the microsoft-never-gets-it-right macro */	1736	/* have to use the microsoft-never-gets-it-right macro */
1522	array_free (rfeed, EMPTY);	1737	array_free (rfeed, EMPTY);
1523	array_free (fdchange, EMPTY);	1738	array_free (fdchange, EMPTY);
1524	array_free (timer, EMPTY);	1739	array_free (timer, EMPTY);
…		…
1559		1774
1560	if (ev_is_active (&pipe_w))	1775	if (ev_is_active (&pipe_w))
1561	{	1776	{
1562	/* this "locks" the handlers against writing to the pipe */	1777	/* this "locks" the handlers against writing to the pipe */
1563	/* while we modify the fd vars */	1778	/* while we modify the fd vars */
1564	gotsig = 1;	1779	sig_pending = 1;
1565	#if EV_ASYNC_ENABLE	1780	#if EV_ASYNC_ENABLE
1566	gotasync = 1;	1781	async_pending = 1;
1567	#endif	1782	#endif
1568		1783
1569	ev_ref (EV_A);	1784	ev_ref (EV_A);
1570	ev_io_stop (EV_A_ &pipe_w);	1785	ev_io_stop (EV_A_ &pipe_w);
1571		1786
…		…
1574	close (evfd);	1789	close (evfd);
1575	#endif	1790	#endif
1576		1791
1577	if (evpipe [0] >= 0)	1792	if (evpipe [0] >= 0)
1578	{	1793	{
1579	close (evpipe [0]);	1794	EV_WIN32_CLOSE_FD (evpipe [0]);
1580	close (evpipe [1]);	1795	EV_WIN32_CLOSE_FD (evpipe [1]);
1581	}	1796	}
1582		1797
		1798	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1583	evpipe_init (EV_A);	1799	evpipe_init (EV_A);
1584	/* now iterate over everything, in case we missed something */	1800	/* now iterate over everything, in case we missed something */
1585	pipecb (EV_A_ &pipe_w, EV_READ);	1801	pipecb (EV_A_ &pipe_w, EV_READ);
		1802	#endif
1586	}	1803	}
1587		1804
1588	postfork = 0;	1805	postfork = 0;
1589	}	1806	}
1590		1807
1591	#if EV_MULTIPLICITY	1808	#if EV_MULTIPLICITY
1592		1809
1593	struct ev_loop *	1810	struct ev_loop *
1594	ev_loop_new (unsigned int flags)	1811	ev_loop_new (unsigned int flags)
1595	{	1812	{
1596	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1813	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1597		1814
1598	memset (loop, 0, sizeof (struct ev_loop));	1815	memset (EV_A, 0, sizeof (struct ev_loop));
1599
1600	loop_init (EV_A_ flags);	1816	loop_init (EV_A_ flags);
1601		1817
1602	if (ev_backend (EV_A))	1818	if (ev_backend (EV_A))
1603	return loop;	1819	return EV_A;
1604		1820
1605	return 0;	1821	return 0;
1606	}	1822	}
1607		1823
1608	void	1824	void
…		…
1615	void	1831	void
1616	ev_loop_fork (EV_P)	1832	ev_loop_fork (EV_P)
1617	{	1833	{
1618	postfork = 1; /* must be in line with ev_default_fork */	1834	postfork = 1; /* must be in line with ev_default_fork */
1619	}	1835	}
		1836	#endif /* multiplicity */
1620		1837
1621	#if EV_VERIFY	1838	#if EV_VERIFY
1622	static void noinline	1839	static void noinline
1623	verify_watcher (EV_P_ W w)	1840	verify_watcher (EV_P_ W w)
1624	{	1841	{
…		…
1652	verify_watcher (EV_A_ ws [cnt]);	1869	verify_watcher (EV_A_ ws [cnt]);
1653	}	1870	}
1654	}	1871	}
1655	#endif	1872	#endif
1656		1873
		1874	#if EV_FEATURE_API
1657	void	1875	void
1658	ev_loop_verify (EV_P)	1876	ev_verify (EV_P)
1659	{	1877	{
1660	#if EV_VERIFY	1878	#if EV_VERIFY
1661	int i;	1879	int i;
1662	WL w;	1880	WL w;
1663		1881
…		…
1702	#if EV_ASYNC_ENABLE	1920	#if EV_ASYNC_ENABLE
1703	assert (asyncmax >= asynccnt);	1921	assert (asyncmax >= asynccnt);
1704	array_verify (EV_A_ (W *)asyncs, asynccnt);	1922	array_verify (EV_A_ (W *)asyncs, asynccnt);
1705	#endif	1923	#endif
1706		1924
		1925	#if EV_PREPARE_ENABLE
1707	assert (preparemax >= preparecnt);	1926	assert (preparemax >= preparecnt);
1708	array_verify (EV_A_ (W *)prepares, preparecnt);	1927	array_verify (EV_A_ (W *)prepares, preparecnt);
		1928	#endif
1709		1929
		1930	#if EV_CHECK_ENABLE
1710	assert (checkmax >= checkcnt);	1931	assert (checkmax >= checkcnt);
1711	array_verify (EV_A_ (W *)checks, checkcnt);	1932	array_verify (EV_A_ (W *)checks, checkcnt);
		1933	#endif
1712		1934
1713	# if 0	1935	# if 0
		1936	#if EV_CHILD_ENABLE
1714	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1937	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1715	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1938	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1716	# endif	1939	#endif
1717	#endif	1940	# endif
		1941	#endif
1718	}	1942	}
1719		1943	#endif
1720	#endif /* multiplicity */
1721		1944
1722	#if EV_MULTIPLICITY	1945	#if EV_MULTIPLICITY
1723	struct ev_loop *	1946	struct ev_loop *
1724	ev_default_loop_init (unsigned int flags)	1947	ev_default_loop_init (unsigned int flags)
1725	#else	1948	#else
…		…
1728	#endif	1951	#endif
1729	{	1952	{
1730	if (!ev_default_loop_ptr)	1953	if (!ev_default_loop_ptr)
1731	{	1954	{
1732	#if EV_MULTIPLICITY	1955	#if EV_MULTIPLICITY
1733	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1956	EV_P = ev_default_loop_ptr = &default_loop_struct;
1734	#else	1957	#else
1735	ev_default_loop_ptr = 1;	1958	ev_default_loop_ptr = 1;
1736	#endif	1959	#endif
1737		1960
1738	loop_init (EV_A_ flags);	1961	loop_init (EV_A_ flags);
1739		1962
1740	if (ev_backend (EV_A))	1963	if (ev_backend (EV_A))
1741	{	1964	{
1742	#ifndef _WIN32	1965	#if EV_CHILD_ENABLE
1743	ev_signal_init (&childev, childcb, SIGCHLD);	1966	ev_signal_init (&childev, childcb, SIGCHLD);
1744	ev_set_priority (&childev, EV_MAXPRI);	1967	ev_set_priority (&childev, EV_MAXPRI);
1745	ev_signal_start (EV_A_ &childev);	1968	ev_signal_start (EV_A_ &childev);
1746	ev_unref (EV_A); /* child watcher should not keep loop alive */	1969	ev_unref (EV_A); /* child watcher should not keep loop alive */
1747	#endif	1970	#endif
…		…
1755		1978
1756	void	1979	void
1757	ev_default_destroy (void)	1980	ev_default_destroy (void)
1758	{	1981	{
1759	#if EV_MULTIPLICITY	1982	#if EV_MULTIPLICITY
1760	struct ev_loop *loop = ev_default_loop_ptr;	1983	EV_P = ev_default_loop_ptr;
1761	#endif	1984	#endif
1762		1985
1763	ev_default_loop_ptr = 0;	1986	ev_default_loop_ptr = 0;
1764		1987
1765	#ifndef _WIN32	1988	#if EV_CHILD_ENABLE
1766	ev_ref (EV_A); /* child watcher */	1989	ev_ref (EV_A); /* child watcher */
1767	ev_signal_stop (EV_A_ &childev);	1990	ev_signal_stop (EV_A_ &childev);
1768	#endif	1991	#endif
1769		1992
1770	loop_destroy (EV_A);	1993	loop_destroy (EV_A);
…		…
1772		1995
1773	void	1996	void
1774	ev_default_fork (void)	1997	ev_default_fork (void)
1775	{	1998	{
1776	#if EV_MULTIPLICITY	1999	#if EV_MULTIPLICITY
1777	struct ev_loop *loop = ev_default_loop_ptr;	2000	EV_P = ev_default_loop_ptr;
1778	#endif	2001	#endif
1779		2002
1780	postfork = 1; /* must be in line with ev_loop_fork */	2003	postfork = 1; /* must be in line with ev_loop_fork */
1781	}	2004	}
1782		2005
…		…
1786	ev_invoke (EV_P_ void *w, int revents)	2009	ev_invoke (EV_P_ void *w, int revents)
1787	{	2010	{
1788	EV_CB_INVOKE ((W)w, revents);	2011	EV_CB_INVOKE ((W)w, revents);
1789	}	2012	}
1790		2013
1791	void	2014	unsigned int
		2015	ev_pending_count (EV_P)
		2016	{
		2017	int pri;
		2018	unsigned int count = 0;
		2019
		2020	for (pri = NUMPRI; pri--; )
		2021	count += pendingcnt [pri];
		2022
		2023	return count;
		2024	}
		2025
		2026	void noinline
1792	ev_invoke_pending (EV_P)	2027	ev_invoke_pending (EV_P)
1793	{	2028	{
1794	int pri;	2029	int pri;
1795		2030
1796	for (pri = NUMPRI; pri--; )	2031	for (pri = NUMPRI; pri--; )
…		…
1864	EV_FREQUENT_CHECK;	2099	EV_FREQUENT_CHECK;
1865	feed_reverse (EV_A_ (W)w);	2100	feed_reverse (EV_A_ (W)w);
1866	}	2101	}
1867	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2102	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1868		2103
1869	feed_reverse_done (EV_A_ EV_TIMEOUT);	2104	feed_reverse_done (EV_A_ EV_TIMER);
1870	}	2105	}
1871	}	2106	}
1872		2107
1873	#if EV_PERIODIC_ENABLE	2108	#if EV_PERIODIC_ENABLE
1874	/* make periodics pending */	2109	/* make periodics pending */
…		…
1965	ANHE_at_cache (*he);	2200	ANHE_at_cache (*he);
1966	}	2201	}
1967	}	2202	}
1968		2203
1969	/* fetch new monotonic and realtime times from the kernel */	2204	/* fetch new monotonic and realtime times from the kernel */
1970	/* also detetc if there was a timejump, and act accordingly */	2205	/* also detect if there was a timejump, and act accordingly */
1971	inline_speed void	2206	inline_speed void
1972	time_update (EV_P_ ev_tstamp max_block)	2207	time_update (EV_P_ ev_tstamp max_block)
1973	{	2208	{
1974	#if EV_USE_MONOTONIC	2209	#if EV_USE_MONOTONIC
1975	if (expect_true (have_monotonic))	2210	if (expect_true (have_monotonic))
…		…
2035	}	2270	}
2036		2271
2037	void	2272	void
2038	ev_loop (EV_P_ int flags)	2273	ev_loop (EV_P_ int flags)
2039	{	2274	{
		2275	#if EV_FEATURE_API
2040	++loop_depth;	2276	++loop_depth;
		2277	#endif
		2278
		2279	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2041		2280
2042	loop_done = EVUNLOOP_CANCEL;	2281	loop_done = EVUNLOOP_CANCEL;
2043		2282
2044	invoke_cb (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2283	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2045		2284
2046	do	2285	do
2047	{	2286	{
2048	#if EV_VERIFY >= 2	2287	#if EV_VERIFY >= 2
2049	ev_loop_verify (EV_A);	2288	ev_verify (EV_A);
2050	#endif	2289	#endif
2051		2290
2052	#ifndef _WIN32	2291	#ifndef _WIN32
2053	if (expect_false (curpid)) /* penalise the forking check even more */	2292	if (expect_false (curpid)) /* penalise the forking check even more */
2054	if (expect_false (getpid () != curpid))	2293	if (expect_false (getpid () != curpid))
…		…
2062	/* we might have forked, so queue fork handlers */	2301	/* we might have forked, so queue fork handlers */
2063	if (expect_false (postfork))	2302	if (expect_false (postfork))
2064	if (forkcnt)	2303	if (forkcnt)
2065	{	2304	{
2066	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2305	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2067	invoke_cb (EV_A);	2306	EV_INVOKE_PENDING;
2068	}	2307	}
2069	#endif	2308	#endif
2070		2309
		2310	#if EV_PREPARE_ENABLE
2071	/* queue prepare watchers (and execute them) */	2311	/* queue prepare watchers (and execute them) */
2072	if (expect_false (preparecnt))	2312	if (expect_false (preparecnt))
2073	{	2313	{
2074	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2314	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2075	invoke_cb (EV_A);	2315	EV_INVOKE_PENDING;
2076	}	2316	}
		2317	#endif
		2318
		2319	if (expect_false (loop_done))
		2320	break;
2077		2321
2078	/* we might have forked, so reify kernel state if necessary */	2322	/* we might have forked, so reify kernel state if necessary */
2079	if (expect_false (postfork))	2323	if (expect_false (postfork))
2080	loop_fork (EV_A);	2324	loop_fork (EV_A);
2081		2325
…		…
2129	waittime -= sleeptime;	2373	waittime -= sleeptime;
2130	}	2374	}
2131	}	2375	}
2132	}	2376	}
2133		2377
		2378	#if EV_FEATURE_API
2134	++loop_count;	2379	++loop_count;
		2380	#endif
		2381	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2135	backend_poll (EV_A_ waittime);	2382	backend_poll (EV_A_ waittime);
		2383	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2136		2384
2137	/* update ev_rt_now, do magic */	2385	/* update ev_rt_now, do magic */
2138	time_update (EV_A_ waittime + sleeptime);	2386	time_update (EV_A_ waittime + sleeptime);
2139	}	2387	}
2140		2388
…		…
2147	#if EV_IDLE_ENABLE	2395	#if EV_IDLE_ENABLE
2148	/* queue idle watchers unless other events are pending */	2396	/* queue idle watchers unless other events are pending */
2149	idle_reify (EV_A);	2397	idle_reify (EV_A);
2150	#endif	2398	#endif
2151		2399
		2400	#if EV_CHECK_ENABLE
2152	/* queue check watchers, to be executed first */	2401	/* queue check watchers, to be executed first */
2153	if (expect_false (checkcnt))	2402	if (expect_false (checkcnt))
2154	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2403	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2404	#endif
2155		2405
2156	invoke_cb (EV_A);	2406	EV_INVOKE_PENDING;
2157	}	2407	}
2158	while (expect_true (	2408	while (expect_true (
2159	activecnt	2409	activecnt
2160	&& !loop_done	2410	&& !loop_done
2161	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2411	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2162	));	2412	));
2163		2413
2164	if (loop_done == EVUNLOOP_ONE)	2414	if (loop_done == EVUNLOOP_ONE)
2165	loop_done = EVUNLOOP_CANCEL;	2415	loop_done = EVUNLOOP_CANCEL;
2166		2416
		2417	#if EV_FEATURE_API
2167	--loop_depth;	2418	--loop_depth;
		2419	#endif
2168	}	2420	}
2169		2421
2170	void	2422	void
2171	ev_unloop (EV_P_ int how)	2423	ev_unloop (EV_P_ int how)
2172	{	2424	{
…		…
2223	inline_size void	2475	inline_size void
2224	wlist_del (WL *head, WL elem)	2476	wlist_del (WL *head, WL elem)
2225	{	2477	{
2226	while (*head)	2478	while (*head)
2227	{	2479	{
2228	if (*head == elem)	2480	if (expect_true (*head == elem))
2229	{	2481	{
2230	*head = elem->next;	2482	*head = elem->next;
2231	return;	2483	break;
2232	}	2484	}
2233		2485
2234	head = &(*head)->next;	2486	head = &(*head)->next;
2235	}	2487	}
2236	}	2488	}
…		…
2296		2548
2297	if (expect_false (ev_is_active (w)))	2549	if (expect_false (ev_is_active (w)))
2298	return;	2550	return;
2299		2551
2300	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2552	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2301	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2553	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2302		2554
2303	EV_FREQUENT_CHECK;	2555	EV_FREQUENT_CHECK;
2304		2556
2305	ev_start (EV_A_ (W)w, 1);	2557	ev_start (EV_A_ (W)w, 1);
2306	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2558	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2307	wlist_add (&anfds[fd].head, (WL)w);	2559	wlist_add (&anfds[fd].head, (WL)w);
2308		2560
2309	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2561	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2310	w->events &= ~EV__IOFDSET;	2562	w->events &= ~EV__IOFDSET;
2311		2563
2312	EV_FREQUENT_CHECK;	2564	EV_FREQUENT_CHECK;
2313	}	2565	}
2314		2566
…		…
2376	timers [active] = timers [timercnt + HEAP0];	2628	timers [active] = timers [timercnt + HEAP0];
2377	adjustheap (timers, timercnt, active);	2629	adjustheap (timers, timercnt, active);
2378	}	2630	}
2379	}	2631	}
2380		2632
2381	EV_FREQUENT_CHECK;
2382
2383	ev_at (w) -= mn_now;	2633	ev_at (w) -= mn_now;
2384		2634
2385	ev_stop (EV_A_ (W)w);	2635	ev_stop (EV_A_ (W)w);
		2636
		2637	EV_FREQUENT_CHECK;
2386	}	2638	}
2387		2639
2388	void noinline	2640	void noinline
2389	ev_timer_again (EV_P_ ev_timer *w)	2641	ev_timer_again (EV_P_ ev_timer *w)
2390	{	2642	{
…		…
2408	}	2660	}
2409		2661
2410	EV_FREQUENT_CHECK;	2662	EV_FREQUENT_CHECK;
2411	}	2663	}
2412		2664
		2665	ev_tstamp
		2666	ev_timer_remaining (EV_P_ ev_timer *w)
		2667	{
		2668	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2669	}
		2670
2413	#if EV_PERIODIC_ENABLE	2671	#if EV_PERIODIC_ENABLE
2414	void noinline	2672	void noinline
2415	ev_periodic_start (EV_P_ ev_periodic *w)	2673	ev_periodic_start (EV_P_ ev_periodic *w)
2416	{	2674	{
2417	if (expect_false (ev_is_active (w)))	2675	if (expect_false (ev_is_active (w)))
…		…
2463	periodics [active] = periodics [periodiccnt + HEAP0];	2721	periodics [active] = periodics [periodiccnt + HEAP0];
2464	adjustheap (periodics, periodiccnt, active);	2722	adjustheap (periodics, periodiccnt, active);
2465	}	2723	}
2466	}	2724	}
2467		2725
2468	EV_FREQUENT_CHECK;
2469
2470	ev_stop (EV_A_ (W)w);	2726	ev_stop (EV_A_ (W)w);
		2727
		2728	EV_FREQUENT_CHECK;
2471	}	2729	}
2472		2730
2473	void noinline	2731	void noinline
2474	ev_periodic_again (EV_P_ ev_periodic *w)	2732	ev_periodic_again (EV_P_ ev_periodic *w)
2475	{	2733	{
…		…
2481		2739
2482	#ifndef SA_RESTART	2740	#ifndef SA_RESTART
2483	# define SA_RESTART 0	2741	# define SA_RESTART 0
2484	#endif	2742	#endif
2485		2743
		2744	#if EV_SIGNAL_ENABLE
		2745
2486	void noinline	2746	void noinline
2487	ev_signal_start (EV_P_ ev_signal *w)	2747	ev_signal_start (EV_P_ ev_signal *w)
2488	{	2748	{
2489	#if EV_MULTIPLICITY
2490	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2491	#endif
2492	if (expect_false (ev_is_active (w)))	2749	if (expect_false (ev_is_active (w)))
2493	return;	2750	return;
2494		2751
2495	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2752	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2496		2753
2497	evpipe_init (EV_A);	2754	#if EV_MULTIPLICITY
		2755	assert (("libev: a signal must not be attached to two different loops",
		2756	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2498		2757
2499	EV_FREQUENT_CHECK;	2758	signals [w->signum - 1].loop = EV_A;
		2759	#endif
2500		2760
		2761	EV_FREQUENT_CHECK;
		2762
		2763	#if EV_USE_SIGNALFD
		2764	if (sigfd == -2)
2501	{	2765	{
2502	#ifndef _WIN32	2766	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2503	sigset_t full, prev;	2767	if (sigfd < 0 && errno == EINVAL)
2504	sigfillset (&full);	2768	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2505	sigprocmask (SIG_SETMASK, &full, &prev);
2506	#endif
2507		2769
2508	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2770	if (sigfd >= 0)
		2771	{
		2772	fd_intern (sigfd); /* doing it twice will not hurt */
2509		2773
2510	#ifndef _WIN32	2774	sigemptyset (&sigfd_set);
2511	sigprocmask (SIG_SETMASK, &prev, 0);	2775
2512	#endif	2776	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2777	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2778	ev_io_start (EV_A_ &sigfd_w);
		2779	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2780	}
2513	}	2781	}
		2782
		2783	if (sigfd >= 0)
		2784	{
		2785	/* TODO: check .head */
		2786	sigaddset (&sigfd_set, w->signum);
		2787	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2788
		2789	signalfd (sigfd, &sigfd_set, 0);
		2790	}
		2791	#endif
2514		2792
2515	ev_start (EV_A_ (W)w, 1);	2793	ev_start (EV_A_ (W)w, 1);
2516	wlist_add (&signals [w->signum - 1].head, (WL)w);	2794	wlist_add (&signals [w->signum - 1].head, (WL)w);
2517		2795
2518	if (!((WL)w)->next)	2796	if (!((WL)w)->next)
		2797	# if EV_USE_SIGNALFD
		2798	if (sigfd < 0) /*TODO*/
		2799	# endif
2519	{	2800	{
2520	#if _WIN32	2801	# ifdef _WIN32
		2802	evpipe_init (EV_A);
		2803
2521	signal (w->signum, ev_sighandler);	2804	signal (w->signum, ev_sighandler);
2522	#else	2805	# else
2523	struct sigaction sa;	2806	struct sigaction sa;
		2807
		2808	evpipe_init (EV_A);
		2809
2524	sa.sa_handler = ev_sighandler;	2810	sa.sa_handler = ev_sighandler;
2525	sigfillset (&sa.sa_mask);	2811	sigfillset (&sa.sa_mask);
2526	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2812	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2527	sigaction (w->signum, &sa, 0);	2813	sigaction (w->signum, &sa, 0);
		2814
		2815	sigemptyset (&sa.sa_mask);
		2816	sigaddset (&sa.sa_mask, w->signum);
		2817	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2528	#endif	2818	#endif
2529	}	2819	}
2530		2820
2531	EV_FREQUENT_CHECK;	2821	EV_FREQUENT_CHECK;
2532	}	2822	}
2533		2823
2534	void noinline	2824	void noinline
…		…
2542		2832
2543	wlist_del (&signals [w->signum - 1].head, (WL)w);	2833	wlist_del (&signals [w->signum - 1].head, (WL)w);
2544	ev_stop (EV_A_ (W)w);	2834	ev_stop (EV_A_ (W)w);
2545		2835
2546	if (!signals [w->signum - 1].head)	2836	if (!signals [w->signum - 1].head)
		2837	{
		2838	#if EV_MULTIPLICITY
		2839	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2840	#endif
		2841	#if EV_USE_SIGNALFD
		2842	if (sigfd >= 0)
		2843	{
		2844	sigset_t ss;
		2845
		2846	sigemptyset (&ss);
		2847	sigaddset (&ss, w->signum);
		2848	sigdelset (&sigfd_set, w->signum);
		2849
		2850	signalfd (sigfd, &sigfd_set, 0);
		2851	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2852	}
		2853	else
		2854	#endif
2547	signal (w->signum, SIG_DFL);	2855	signal (w->signum, SIG_DFL);
		2856	}
2548		2857
2549	EV_FREQUENT_CHECK;	2858	EV_FREQUENT_CHECK;
2550	}	2859	}
		2860
		2861	#endif
		2862
		2863	#if EV_CHILD_ENABLE
2551		2864
2552	void	2865	void
2553	ev_child_start (EV_P_ ev_child *w)	2866	ev_child_start (EV_P_ ev_child *w)
2554	{	2867	{
2555	#if EV_MULTIPLICITY	2868	#if EV_MULTIPLICITY
…		…
2559	return;	2872	return;
2560		2873
2561	EV_FREQUENT_CHECK;	2874	EV_FREQUENT_CHECK;
2562		2875
2563	ev_start (EV_A_ (W)w, 1);	2876	ev_start (EV_A_ (W)w, 1);
2564	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2877	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2565		2878
2566	EV_FREQUENT_CHECK;	2879	EV_FREQUENT_CHECK;
2567	}	2880	}
2568		2881
2569	void	2882	void
…		…
2573	if (expect_false (!ev_is_active (w)))	2886	if (expect_false (!ev_is_active (w)))
2574	return;	2887	return;
2575		2888
2576	EV_FREQUENT_CHECK;	2889	EV_FREQUENT_CHECK;
2577		2890
2578	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2891	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2579	ev_stop (EV_A_ (W)w);	2892	ev_stop (EV_A_ (W)w);
2580		2893
2581	EV_FREQUENT_CHECK;	2894	EV_FREQUENT_CHECK;
2582	}	2895	}
		2896
		2897	#endif
2583		2898
2584	#if EV_STAT_ENABLE	2899	#if EV_STAT_ENABLE
2585		2900
2586	# ifdef _WIN32	2901	# ifdef _WIN32
2587	# undef lstat	2902	# undef lstat
…		…
2593	#define MIN_STAT_INTERVAL 0.1074891	2908	#define MIN_STAT_INTERVAL 0.1074891
2594		2909
2595	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2910	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2596		2911
2597	#if EV_USE_INOTIFY	2912	#if EV_USE_INOTIFY
2598	# define EV_INOTIFY_BUFSIZE 8192	2913
		2914	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2915	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2599		2916
2600	static void noinline	2917	static void noinline
2601	infy_add (EV_P_ ev_stat *w)	2918	infy_add (EV_P_ ev_stat *w)
2602	{	2919	{
2603	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);	2920	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);
2604		2921
2605	if (w->wd < 0)	2922	if (w->wd >= 0)
		2923	{
		2924	struct statfs sfs;
		2925
		2926	/* now local changes will be tracked by inotify, but remote changes won't */
		2927	/* unless the filesystem is known to be local, we therefore still poll */
		2928	/* also do poll on <2.6.25, but with normal frequency */
		2929
		2930	if (!fs_2625)
		2931	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2932	else if (!statfs (w->path, &sfs)
		2933	&& (sfs.f_type == 0x1373 /* devfs */
		2934	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2935	|| sfs.f_type == 0x3153464a /* jfs */
		2936	|| sfs.f_type == 0x52654973 /* reiser3 */
		2937	|| sfs.f_type == 0x01021994 /* tempfs */
		2938	|| sfs.f_type == 0x58465342 /* xfs */))
		2939	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2940	else
		2941	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2606	{	2942	}
		2943	else
		2944	{
		2945	/* can't use inotify, continue to stat */
2607	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2946	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2608	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2609		2947
2610	/* monitor some parent directory for speedup hints */	2948	/* if path is not there, monitor some parent directory for speedup hints */
2611	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2949	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2612	/* but an efficiency issue only */	2950	/* but an efficiency issue only */
2613	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2951	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2614	{	2952	{
2615	char path [4096];	2953	char path [4096];
…		…
2631	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2969	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2632	}	2970	}
2633	}	2971	}
2634		2972
2635	if (w->wd >= 0)	2973	if (w->wd >= 0)
2636	{
2637	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2974	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2638		2975
2639	/* now local changes will be tracked by inotify, but remote changes won't */	2976	/* now re-arm timer, if required */
2640	/* unless the filesystem it known to be local, we therefore still poll */	2977	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2641	/* also do poll on <2.6.25, but with normal frequency */
2642	struct statfs sfs;
2643
2644	if (fs_2625 && !statfs (w->path, &sfs))
2645	if (sfs.f_type == 0x1373 /* devfs */
2646	|| sfs.f_type == 0xEF53 /* ext2/3 */
2647	|| sfs.f_type == 0x3153464a /* jfs */
2648	|| sfs.f_type == 0x52654973 /* reiser3 */
2649	|| sfs.f_type == 0x01021994 /* tempfs */
2650	|| sfs.f_type == 0x58465342 /* xfs */)
2651	return;
2652
2653	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2654	ev_timer_again (EV_A_ &w->timer);	2978	ev_timer_again (EV_A_ &w->timer);
2655	}	2979	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2656	}	2980	}
2657		2981
2658	static void noinline	2982	static void noinline
2659	infy_del (EV_P_ ev_stat *w)	2983	infy_del (EV_P_ ev_stat *w)
2660	{	2984	{
…		…
2663		2987
2664	if (wd < 0)	2988	if (wd < 0)
2665	return;	2989	return;
2666		2990
2667	w->wd = -2;	2991	w->wd = -2;
2668	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	2992	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2669	wlist_del (&fs_hash [slot].head, (WL)w);	2993	wlist_del (&fs_hash [slot].head, (WL)w);
2670		2994
2671	/* remove this watcher, if others are watching it, they will rearm */	2995	/* remove this watcher, if others are watching it, they will rearm */
2672	inotify_rm_watch (fs_fd, wd);	2996	inotify_rm_watch (fs_fd, wd);
2673	}	2997	}
…		…
2675	static void noinline	2999	static void noinline
2676	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3000	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2677	{	3001	{
2678	if (slot < 0)	3002	if (slot < 0)
2679	/* overflow, need to check for all hash slots */	3003	/* overflow, need to check for all hash slots */
2680	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3004	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2681	infy_wd (EV_A_ slot, wd, ev);	3005	infy_wd (EV_A_ slot, wd, ev);
2682	else	3006	else
2683	{	3007	{
2684	WL w_;	3008	WL w_;
2685		3009
2686	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3010	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2687	{	3011	{
2688	ev_stat *w = (ev_stat *)w_;	3012	ev_stat *w = (ev_stat *)w_;
2689	w_ = w_->next; /* lets us remove this watcher and all before it */	3013	w_ = w_->next; /* lets us remove this watcher and all before it */
2690		3014
2691	if (w->wd == wd || wd == -1)	3015	if (w->wd == wd || wd == -1)
2692	{	3016	{
2693	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3017	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2694	{	3018	{
2695	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3019	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2696	w->wd = -1;	3020	w->wd = -1;
2697	infy_add (EV_A_ w); /* re-add, no matter what */	3021	infy_add (EV_A_ w); /* re-add, no matter what */
2698	}	3022	}
2699		3023
2700	stat_timer_cb (EV_A_ &w->timer, 0);	3024	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2705		3029
2706	static void	3030	static void
2707	infy_cb (EV_P_ ev_io *w, int revents)	3031	infy_cb (EV_P_ ev_io *w, int revents)
2708	{	3032	{
2709	char buf [EV_INOTIFY_BUFSIZE];	3033	char buf [EV_INOTIFY_BUFSIZE];
2710	struct inotify_event *ev = (struct inotify_event *)buf;
2711	int ofs;	3034	int ofs;
2712	int len = read (fs_fd, buf, sizeof (buf));	3035	int len = read (fs_fd, buf, sizeof (buf));
2713		3036
2714	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3037	for (ofs = 0; ofs < len; )
		3038	{
		3039	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2715	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3040	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3041	ofs += sizeof (struct inotify_event) + ev->len;
		3042	}
		3043	}
		3044
		3045	inline_size unsigned int
		3046	ev_linux_version (void)
		3047	{
		3048	struct utsname buf;
		3049	unsigned int v;
		3050	int i;
		3051	char *p = buf.release;
		3052
		3053	if (uname (&buf))
		3054	return 0;
		3055
		3056	for (i = 3+1; --i; )
		3057	{
		3058	unsigned int c = 0;
		3059
		3060	for (;;)
		3061	{
		3062	if (*p >= '0' && *p <= '9')
		3063	c = c * 10 + *p++ - '0';
		3064	else
		3065	{
		3066	p += *p == '.';
		3067	break;
		3068	}
		3069	}
		3070
		3071	v = (v << 8) | c;
		3072	}
		3073
		3074	return v;
2716	}	3075	}
2717		3076
2718	inline_size void	3077	inline_size void
2719	check_2625 (EV_P)	3078	ev_check_2625 (EV_P)
2720	{	3079	{
2721	/* kernels < 2.6.25 are borked	3080	/* kernels < 2.6.25 are borked
2722	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3081	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2723	*/	3082	*/
2724	struct utsname buf;	3083	if (ev_linux_version () < 0x020619)
2725	int major, minor, micro;
2726
2727	if (uname (&buf))
2728	return;	3084	return;
2729		3085
2730	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2731	return;
2732
2733	if (major < 2
2734	|| (major == 2 && minor < 6)
2735	|| (major == 2 && minor == 6 && micro < 25))
2736	return;
2737
2738	fs_2625 = 1;	3086	fs_2625 = 1;
		3087	}
		3088
		3089	inline_size int
		3090	infy_newfd (void)
		3091	{
		3092	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3093	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3094	if (fd >= 0)
		3095	return fd;
		3096	#endif
		3097	return inotify_init ();
2739	}	3098	}
2740		3099
2741	inline_size void	3100	inline_size void
2742	infy_init (EV_P)	3101	infy_init (EV_P)
2743	{	3102	{
2744	if (fs_fd != -2)	3103	if (fs_fd != -2)
2745	return;	3104	return;
2746		3105
2747	fs_fd = -1;	3106	fs_fd = -1;
2748		3107
2749	check_2625 (EV_A);	3108	ev_check_2625 (EV_A);
2750		3109
2751	fs_fd = inotify_init ();	3110	fs_fd = infy_newfd ();
2752		3111
2753	if (fs_fd >= 0)	3112	if (fs_fd >= 0)
2754	{	3113	{
		3114	fd_intern (fs_fd);
2755	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3115	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2756	ev_set_priority (&fs_w, EV_MAXPRI);	3116	ev_set_priority (&fs_w, EV_MAXPRI);
2757	ev_io_start (EV_A_ &fs_w);	3117	ev_io_start (EV_A_ &fs_w);
		3118	ev_unref (EV_A);
2758	}	3119	}
2759	}	3120	}
2760		3121
2761	inline_size void	3122	inline_size void
2762	infy_fork (EV_P)	3123	infy_fork (EV_P)
…		…
2764	int slot;	3125	int slot;
2765		3126
2766	if (fs_fd < 0)	3127	if (fs_fd < 0)
2767	return;	3128	return;
2768		3129
		3130	ev_ref (EV_A);
		3131	ev_io_stop (EV_A_ &fs_w);
2769	close (fs_fd);	3132	close (fs_fd);
2770	fs_fd = inotify_init ();	3133	fs_fd = infy_newfd ();
2771		3134
		3135	if (fs_fd >= 0)
		3136	{
		3137	fd_intern (fs_fd);
		3138	ev_io_set (&fs_w, fs_fd, EV_READ);
		3139	ev_io_start (EV_A_ &fs_w);
		3140	ev_unref (EV_A);
		3141	}
		3142
2772	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3143	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2773	{	3144	{
2774	WL w_ = fs_hash [slot].head;	3145	WL w_ = fs_hash [slot].head;
2775	fs_hash [slot].head = 0;	3146	fs_hash [slot].head = 0;
2776		3147
2777	while (w_)	3148	while (w_)
…		…
2782	w->wd = -1;	3153	w->wd = -1;
2783		3154
2784	if (fs_fd >= 0)	3155	if (fs_fd >= 0)
2785	infy_add (EV_A_ w); /* re-add, no matter what */	3156	infy_add (EV_A_ w); /* re-add, no matter what */
2786	else	3157	else
		3158	{
		3159	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3160	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2787	ev_timer_again (EV_A_ &w->timer);	3161	ev_timer_again (EV_A_ &w->timer);
		3162	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3163	}
2788	}	3164	}
2789	}	3165	}
2790	}	3166	}
2791		3167
2792	#endif	3168	#endif
…		…
2809	static void noinline	3185	static void noinline
2810	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3186	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2811	{	3187	{
2812	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3188	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2813		3189
2814	/* we copy this here each the time so that */	3190	ev_statdata prev = w->attr;
2815	/* prev has the old value when the callback gets invoked */
2816	w->prev = w->attr;
2817	ev_stat_stat (EV_A_ w);	3191	ev_stat_stat (EV_A_ w);
2818		3192
2819	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3193	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2820	if (	3194	if (
2821	w->prev.st_dev != w->attr.st_dev	3195	prev.st_dev != w->attr.st_dev
2822	|| w->prev.st_ino != w->attr.st_ino	3196	|| prev.st_ino != w->attr.st_ino
2823	|| w->prev.st_mode != w->attr.st_mode	3197	|| prev.st_mode != w->attr.st_mode
2824	|| w->prev.st_nlink != w->attr.st_nlink	3198	|| prev.st_nlink != w->attr.st_nlink
2825	|| w->prev.st_uid != w->attr.st_uid	3199	|| prev.st_uid != w->attr.st_uid
2826	|| w->prev.st_gid != w->attr.st_gid	3200	|| prev.st_gid != w->attr.st_gid
2827	|| w->prev.st_rdev != w->attr.st_rdev	3201	|| prev.st_rdev != w->attr.st_rdev
2828	|| w->prev.st_size != w->attr.st_size	3202	|| prev.st_size != w->attr.st_size
2829	|| w->prev.st_atime != w->attr.st_atime	3203	|| prev.st_atime != w->attr.st_atime
2830	|| w->prev.st_mtime != w->attr.st_mtime	3204	|| prev.st_mtime != w->attr.st_mtime
2831	|| w->prev.st_ctime != w->attr.st_ctime	3205	|| prev.st_ctime != w->attr.st_ctime
2832	) {	3206	) {
		3207	/* we only update w->prev on actual differences */
		3208	/* in case we test more often than invoke the callback, */
		3209	/* to ensure that prev is always different to attr */
		3210	w->prev = prev;
		3211
2833	#if EV_USE_INOTIFY	3212	#if EV_USE_INOTIFY
2834	if (fs_fd >= 0)	3213	if (fs_fd >= 0)
2835	{	3214	{
2836	infy_del (EV_A_ w);	3215	infy_del (EV_A_ w);
2837	infy_add (EV_A_ w);	3216	infy_add (EV_A_ w);
…		…
2862		3241
2863	if (fs_fd >= 0)	3242	if (fs_fd >= 0)
2864	infy_add (EV_A_ w);	3243	infy_add (EV_A_ w);
2865	else	3244	else
2866	#endif	3245	#endif
		3246	{
2867	ev_timer_again (EV_A_ &w->timer);	3247	ev_timer_again (EV_A_ &w->timer);
		3248	ev_unref (EV_A);
		3249	}
2868		3250
2869	ev_start (EV_A_ (W)w, 1);	3251	ev_start (EV_A_ (W)w, 1);
2870		3252
2871	EV_FREQUENT_CHECK;	3253	EV_FREQUENT_CHECK;
2872	}	3254	}
…		…
2881	EV_FREQUENT_CHECK;	3263	EV_FREQUENT_CHECK;
2882		3264
2883	#if EV_USE_INOTIFY	3265	#if EV_USE_INOTIFY
2884	infy_del (EV_A_ w);	3266	infy_del (EV_A_ w);
2885	#endif	3267	#endif
		3268
		3269	if (ev_is_active (&w->timer))
		3270	{
		3271	ev_ref (EV_A);
2886	ev_timer_stop (EV_A_ &w->timer);	3272	ev_timer_stop (EV_A_ &w->timer);
		3273	}
2887		3274
2888	ev_stop (EV_A_ (W)w);	3275	ev_stop (EV_A_ (W)w);
2889		3276
2890	EV_FREQUENT_CHECK;	3277	EV_FREQUENT_CHECK;
2891	}	3278	}
…		…
2936		3323
2937	EV_FREQUENT_CHECK;	3324	EV_FREQUENT_CHECK;
2938	}	3325	}
2939	#endif	3326	#endif
2940		3327
		3328	#if EV_PREPARE_ENABLE
2941	void	3329	void
2942	ev_prepare_start (EV_P_ ev_prepare *w)	3330	ev_prepare_start (EV_P_ ev_prepare *w)
2943	{	3331	{
2944	if (expect_false (ev_is_active (w)))	3332	if (expect_false (ev_is_active (w)))
2945	return;	3333	return;
…		…
2971		3359
2972	ev_stop (EV_A_ (W)w);	3360	ev_stop (EV_A_ (W)w);
2973		3361
2974	EV_FREQUENT_CHECK;	3362	EV_FREQUENT_CHECK;
2975	}	3363	}
		3364	#endif
2976		3365
		3366	#if EV_CHECK_ENABLE
2977	void	3367	void
2978	ev_check_start (EV_P_ ev_check *w)	3368	ev_check_start (EV_P_ ev_check *w)
2979	{	3369	{
2980	if (expect_false (ev_is_active (w)))	3370	if (expect_false (ev_is_active (w)))
2981	return;	3371	return;
…		…
3007		3397
3008	ev_stop (EV_A_ (W)w);	3398	ev_stop (EV_A_ (W)w);
3009		3399
3010	EV_FREQUENT_CHECK;	3400	EV_FREQUENT_CHECK;
3011	}	3401	}
		3402	#endif
3012		3403
3013	#if EV_EMBED_ENABLE	3404	#if EV_EMBED_ENABLE
3014	void noinline	3405	void noinline
3015	ev_embed_sweep (EV_P_ ev_embed *w)	3406	ev_embed_sweep (EV_P_ ev_embed *w)
3016	{	3407	{
…		…
3032	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3423	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3033	{	3424	{
3034	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3425	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3035		3426
3036	{	3427	{
3037	struct ev_loop *loop = w->other;	3428	EV_P = w->other;
3038		3429
3039	while (fdchangecnt)	3430	while (fdchangecnt)
3040	{	3431	{
3041	fd_reify (EV_A);	3432	fd_reify (EV_A);
3042	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3433	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3050	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3441	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3051		3442
3052	ev_embed_stop (EV_A_ w);	3443	ev_embed_stop (EV_A_ w);
3053		3444
3054	{	3445	{
3055	struct ev_loop *loop = w->other;	3446	EV_P = w->other;
3056		3447
3057	ev_loop_fork (EV_A);	3448	ev_loop_fork (EV_A);
3058	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3449	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3059	}	3450	}
3060		3451
…		…
3074	{	3465	{
3075	if (expect_false (ev_is_active (w)))	3466	if (expect_false (ev_is_active (w)))
3076	return;	3467	return;
3077		3468
3078	{	3469	{
3079	struct ev_loop *loop = w->other;	3470	EV_P = w->other;
3080	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3471	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3081	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3472	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3082	}	3473	}
3083		3474
3084	EV_FREQUENT_CHECK;	3475	EV_FREQUENT_CHECK;
…		…
3111		3502
3112	ev_io_stop (EV_A_ &w->io);	3503	ev_io_stop (EV_A_ &w->io);
3113	ev_prepare_stop (EV_A_ &w->prepare);	3504	ev_prepare_stop (EV_A_ &w->prepare);
3114	ev_fork_stop (EV_A_ &w->fork);	3505	ev_fork_stop (EV_A_ &w->fork);
3115		3506
		3507	ev_stop (EV_A_ (W)w);
		3508
3116	EV_FREQUENT_CHECK;	3509	EV_FREQUENT_CHECK;
3117	}	3510	}
3118	#endif	3511	#endif
3119		3512
3120	#if EV_FORK_ENABLE	3513	#if EV_FORK_ENABLE
…		…
3196		3589
3197	void	3590	void
3198	ev_async_send (EV_P_ ev_async *w)	3591	ev_async_send (EV_P_ ev_async *w)
3199	{	3592	{
3200	w->sent = 1;	3593	w->sent = 1;
3201	evpipe_write (EV_A_ &gotasync);	3594	evpipe_write (EV_A_ &async_pending);
3202	}	3595	}
3203	#endif	3596	#endif
3204		3597
3205	/*****************************************************************************/	3598	/*****************************************************************************/
3206		3599
…		…
3246	{	3639	{
3247	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3640	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3248		3641
3249	if (expect_false (!once))	3642	if (expect_false (!once))
3250	{	3643	{
3251	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3644	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3252	return;	3645	return;
3253	}	3646	}
3254		3647
3255	once->cb = cb;	3648	once->cb = cb;
3256	once->arg = arg;	3649	once->arg = arg;
…		…
3343	if (types & EV_ASYNC)	3736	if (types & EV_ASYNC)
3344	for (i = asynccnt; i--; )	3737	for (i = asynccnt; i--; )
3345	cb (EV_A_ EV_ASYNC, asyncs [i]);	3738	cb (EV_A_ EV_ASYNC, asyncs [i]);
3346	#endif	3739	#endif
3347		3740
		3741	#if EV_PREPARE_ENABLE
3348	if (types & EV_PREPARE)	3742	if (types & EV_PREPARE)
3349	for (i = preparecnt; i--; )	3743	for (i = preparecnt; i--; )
3350	#if EV_EMBED_ENABLE	3744	# if EV_EMBED_ENABLE
3351	if (ev_cb (prepares [i]) != embed_prepare_cb)	3745	if (ev_cb (prepares [i]) != embed_prepare_cb)
3352	#endif	3746	# endif
3353	cb (EV_A_ EV_PREPARE, prepares [i]);	3747	cb (EV_A_ EV_PREPARE, prepares [i]);
		3748	#endif
3354		3749
		3750	#if EV_CHECK_ENABLE
3355	if (types & EV_CHECK)	3751	if (types & EV_CHECK)
3356	for (i = checkcnt; i--; )	3752	for (i = checkcnt; i--; )
3357	cb (EV_A_ EV_CHECK, checks [i]);	3753	cb (EV_A_ EV_CHECK, checks [i]);
		3754	#endif
3358		3755
		3756	#if EV_SIGNAL_ENABLE
3359	if (types & EV_SIGNAL)	3757	if (types & EV_SIGNAL)
3360	for (i = 0; i < signalmax; ++i)	3758	for (i = 0; i < EV_NSIG - 1; ++i)
3361	for (wl = signals [i].head; wl; )	3759	for (wl = signals [i].head; wl; )
3362	{	3760	{
3363	wn = wl->next;	3761	wn = wl->next;
3364	cb (EV_A_ EV_SIGNAL, wl);	3762	cb (EV_A_ EV_SIGNAL, wl);
3365	wl = wn;	3763	wl = wn;
3366	}	3764	}
		3765	#endif
3367		3766
		3767	#if EV_CHILD_ENABLE
3368	if (types & EV_CHILD)	3768	if (types & EV_CHILD)
3369	for (i = EV_PID_HASHSIZE; i--; )	3769	for (i = (EV_PID_HASHSIZE); i--; )
3370	for (wl = childs [i]; wl; )	3770	for (wl = childs [i]; wl; )
3371	{	3771	{
3372	wn = wl->next;	3772	wn = wl->next;
3373	cb (EV_A_ EV_CHILD, wl);	3773	cb (EV_A_ EV_CHILD, wl);
3374	wl = wn;	3774	wl = wn;
3375	}	3775	}
		3776	#endif
3376	/* EV_STAT 0x00001000 /* stat data changed */	3777	/* EV_STAT 0x00001000 /* stat data changed */
3377	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3778	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3378	}	3779	}
3379	#endif	3780	#endif
3380		3781

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