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Comparing libev/ev.c (file contents):
Revision 1.304 by root, Sun Jul 19 03:12:28 2009 UTC vs.
Revision 1.346 by root, Thu Oct 14 05:07:04 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	*
…		…
77	# ifndef EV_USE_REALTIME	77	# ifndef EV_USE_REALTIME
78	# define EV_USE_REALTIME 0	78	# define EV_USE_REALTIME 0
79	# endif	79	# endif
80	# endif	80	# endif
81		81
		82	# if HAVE_NANOSLEEP
82	# ifndef EV_USE_NANOSLEEP	83	# ifndef EV_USE_NANOSLEEP
83	# if HAVE_NANOSLEEP
84	# define EV_USE_NANOSLEEP 1	84	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		85	# endif
85	# else	86	# else
		87	# undef EV_USE_NANOSLEEP
86	# define EV_USE_NANOSLEEP 0	88	# define EV_USE_NANOSLEEP 0
		89	# endif
		90
		91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		92	# ifndef EV_USE_SELECT
		93	# define EV_USE_SELECT EV_FEATURE_BACKENDS
87	# endif	94	# endif
		95	# else
		96	# undef EV_USE_SELECT
		97	# define EV_USE_SELECT 0
88	# endif	98	# endif
89		99
		100	# if HAVE_POLL && HAVE_POLL_H
90	# ifndef EV_USE_SELECT	101	# ifndef EV_USE_POLL
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H	102	# define EV_USE_POLL EV_FEATURE_BACKENDS
92	# define EV_USE_SELECT 1
93	# else
94	# define EV_USE_SELECT 0
95	# endif	103	# endif
96	# endif
97
98	# ifndef EV_USE_POLL
99	# if HAVE_POLL && HAVE_POLL_H
100	# define EV_USE_POLL 1
101	# else	104	# else
		105	# undef EV_USE_POLL
102	# define EV_USE_POLL 0	106	# define EV_USE_POLL 0
103	# endif
104	# endif	107	# endif
105		108
106	# ifndef EV_USE_EPOLL
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	109	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108	# define EV_USE_EPOLL 1	110	# ifndef EV_USE_EPOLL
109	# else	111	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110	# define EV_USE_EPOLL 0
111	# endif	112	# endif
		113	# else
		114	# undef EV_USE_EPOLL
		115	# define EV_USE_EPOLL 0
112	# endif	116	# endif
113		117
		118	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114	# ifndef EV_USE_KQUEUE	119	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	120	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116	# define EV_USE_KQUEUE 1
117	# else
118	# define EV_USE_KQUEUE 0
119	# endif	121	# endif
		122	# else
		123	# undef EV_USE_KQUEUE
		124	# define EV_USE_KQUEUE 0
120	# endif	125	# endif
121		126
122	# ifndef EV_USE_PORT
123	# if HAVE_PORT_H && HAVE_PORT_CREATE	127	# if HAVE_PORT_H && HAVE_PORT_CREATE
124	# define EV_USE_PORT 1	128	# ifndef EV_USE_PORT
125	# else	129	# define EV_USE_PORT EV_FEATURE_BACKENDS
126	# define EV_USE_PORT 0
127	# endif	130	# endif
		131	# else
		132	# undef EV_USE_PORT
		133	# define EV_USE_PORT 0
128	# endif	134	# endif
129		135
130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	136	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132	# define EV_USE_INOTIFY 1	137	# ifndef EV_USE_INOTIFY
133	# else
134	# define EV_USE_INOTIFY 0	138	# define EV_USE_INOTIFY EV_FEATURE_OS
135	# endif	139	# endif
		140	# else
		141	# undef EV_USE_INOTIFY
		142	# define EV_USE_INOTIFY 0
136	# endif	143	# endif
137		144
138	# ifndef EV_USE_SIGNALFD
139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H	145	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140	# define EV_USE_SIGNALFD 1	146	# ifndef EV_USE_SIGNALFD
141	# else
142	# define EV_USE_SIGNALFD 0	147	# define EV_USE_SIGNALFD EV_FEATURE_OS
143	# endif	148	# endif
		149	# else
		150	# undef EV_USE_SIGNALFD
		151	# define EV_USE_SIGNALFD 0
144	# endif	152	# endif
145		153
		154	# if HAVE_EVENTFD
146	# ifndef EV_USE_EVENTFD	155	# ifndef EV_USE_EVENTFD
147	# if HAVE_EVENTFD
148	# define EV_USE_EVENTFD 1	156	# define EV_USE_EVENTFD EV_FEATURE_OS
149	# else
150	# define EV_USE_EVENTFD 0
151	# endif	157	# endif
		158	# else
		159	# undef EV_USE_EVENTFD
		160	# define EV_USE_EVENTFD 0
152	# endif	161	# endif
153		162
154	#endif	163	#endif
155		164
156	#include <math.h>	165	#include <math.h>
157	#include <stdlib.h>	166	#include <stdlib.h>
		167	#include <string.h>
158	#include <fcntl.h>	168	#include <fcntl.h>
159	#include <stddef.h>	169	#include <stddef.h>
160		170
161	#include <stdio.h>	171	#include <stdio.h>
162		172
163	#include <assert.h>	173	#include <assert.h>
164	#include <errno.h>	174	#include <errno.h>
165	#include <sys/types.h>	175	#include <sys/types.h>
166	#include <time.h>	176	#include <time.h>
		177	#include <limits.h>
167		178
168	#include <signal.h>	179	#include <signal.h>
169		180
170	#ifdef EV_H	181	#ifdef EV_H
171	# include EV_H	182	# include EV_H
…		…
182	# define WIN32_LEAN_AND_MEAN	193	# define WIN32_LEAN_AND_MEAN
183	# include <windows.h>	194	# include <windows.h>
184	# ifndef EV_SELECT_IS_WINSOCKET	195	# ifndef EV_SELECT_IS_WINSOCKET
185	# define EV_SELECT_IS_WINSOCKET 1	196	# define EV_SELECT_IS_WINSOCKET 1
186	# endif	197	# endif
		198	# undef EV_AVOID_STDIO
187	#endif	199	#endif
		200
		201	/* OS X, in its infinite idiocy, actually HARDCODES
		202	* a limit of 1024 into their select. Where people have brains,
		203	* OS X engineers apparently have a vacuum. Or maybe they were
		204	* ordered to have a vacuum, or they do anything for money.
		205	* This might help. Or not.
		206	*/
		207	#define _DARWIN_UNLIMITED_SELECT 1
188		208
189	/* this block tries to deduce configuration from header-defined symbols and defaults */	209	/* this block tries to deduce configuration from header-defined symbols and defaults */
		210
		211	/* try to deduce the maximum number of signals on this platform */
		212	#if defined (EV_NSIG)
		213	/* use what's provided */
		214	#elif defined (NSIG)
		215	# define EV_NSIG (NSIG)
		216	#elif defined(_NSIG)
		217	# define EV_NSIG (_NSIG)
		218	#elif defined (SIGMAX)
		219	# define EV_NSIG (SIGMAX+1)
		220	#elif defined (SIG_MAX)
		221	# define EV_NSIG (SIG_MAX+1)
		222	#elif defined (_SIG_MAX)
		223	# define EV_NSIG (_SIG_MAX+1)
		224	#elif defined (MAXSIG)
		225	# define EV_NSIG (MAXSIG+1)
		226	#elif defined (MAX_SIG)
		227	# define EV_NSIG (MAX_SIG+1)
		228	#elif defined (SIGARRAYSIZE)
		229	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		230	#elif defined (_sys_nsig)
		231	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		232	#else
		233	# error "unable to find value for NSIG, please report"
		234	/* to make it compile regardless, just remove the above line, */
		235	/* but consider reporting it, too! :) */
		236	# define EV_NSIG 65
		237	#endif
190		238
191	#ifndef EV_USE_CLOCK_SYSCALL	239	#ifndef EV_USE_CLOCK_SYSCALL
192	# if __linux && __GLIBC__ >= 2	240	# if __linux && __GLIBC__ >= 2
193	# define EV_USE_CLOCK_SYSCALL 1	241	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
194	# else	242	# else
195	# define EV_USE_CLOCK_SYSCALL 0	243	# define EV_USE_CLOCK_SYSCALL 0
196	# endif	244	# endif
197	#endif	245	#endif
198		246
199	#ifndef EV_USE_MONOTONIC	247	#ifndef EV_USE_MONOTONIC
200	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	248	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
201	# define EV_USE_MONOTONIC 1	249	# define EV_USE_MONOTONIC EV_FEATURE_OS
202	# else	250	# else
203	# define EV_USE_MONOTONIC 0	251	# define EV_USE_MONOTONIC 0
204	# endif	252	# endif
205	#endif	253	#endif
206		254
…		…
208	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	256	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
209	#endif	257	#endif
210		258
211	#ifndef EV_USE_NANOSLEEP	259	#ifndef EV_USE_NANOSLEEP
212	# if _POSIX_C_SOURCE >= 199309L	260	# if _POSIX_C_SOURCE >= 199309L
213	# define EV_USE_NANOSLEEP 1	261	# define EV_USE_NANOSLEEP EV_FEATURE_OS
214	# else	262	# else
215	# define EV_USE_NANOSLEEP 0	263	# define EV_USE_NANOSLEEP 0
216	# endif	264	# endif
217	#endif	265	#endif
218		266
219	#ifndef EV_USE_SELECT	267	#ifndef EV_USE_SELECT
220	# define EV_USE_SELECT 1	268	# define EV_USE_SELECT EV_FEATURE_BACKENDS
221	#endif	269	#endif
222		270
223	#ifndef EV_USE_POLL	271	#ifndef EV_USE_POLL
224	# ifdef _WIN32	272	# ifdef _WIN32
225	# define EV_USE_POLL 0	273	# define EV_USE_POLL 0
226	# else	274	# else
227	# define EV_USE_POLL 1	275	# define EV_USE_POLL EV_FEATURE_BACKENDS
228	# endif	276	# endif
229	#endif	277	#endif
230		278
231	#ifndef EV_USE_EPOLL	279	#ifndef EV_USE_EPOLL
232	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	280	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
233	# define EV_USE_EPOLL 1	281	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
234	# else	282	# else
235	# define EV_USE_EPOLL 0	283	# define EV_USE_EPOLL 0
236	# endif	284	# endif
237	#endif	285	#endif
238		286
…		…
244	# define EV_USE_PORT 0	292	# define EV_USE_PORT 0
245	#endif	293	#endif
246		294
247	#ifndef EV_USE_INOTIFY	295	#ifndef EV_USE_INOTIFY
248	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	296	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
249	# define EV_USE_INOTIFY 1	297	# define EV_USE_INOTIFY EV_FEATURE_OS
250	# else	298	# else
251	# define EV_USE_INOTIFY 0	299	# define EV_USE_INOTIFY 0
252	# endif	300	# endif
253	#endif	301	#endif
254		302
255	#ifndef EV_PID_HASHSIZE	303	#ifndef EV_PID_HASHSIZE
256	# if EV_MINIMAL	304	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257	# define EV_PID_HASHSIZE 1
258	# else
259	# define EV_PID_HASHSIZE 16
260	# endif
261	#endif	305	#endif
262		306
263	#ifndef EV_INOTIFY_HASHSIZE	307	#ifndef EV_INOTIFY_HASHSIZE
264	# if EV_MINIMAL	308	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
265	# define EV_INOTIFY_HASHSIZE 1
266	# else
267	# define EV_INOTIFY_HASHSIZE 16
268	# endif
269	#endif	309	#endif
270		310
271	#ifndef EV_USE_EVENTFD	311	#ifndef EV_USE_EVENTFD
272	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	312	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
273	# define EV_USE_EVENTFD 1	313	# define EV_USE_EVENTFD EV_FEATURE_OS
274	# else	314	# else
275	# define EV_USE_EVENTFD 0	315	# define EV_USE_EVENTFD 0
276	# endif	316	# endif
277	#endif	317	#endif
278		318
279	#ifndef EV_USE_SIGNALFD	319	#ifndef EV_USE_SIGNALFD
280	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	320	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
281	# define EV_USE_SIGNALFD 1	321	# define EV_USE_SIGNALFD EV_FEATURE_OS
282	# else	322	# else
283	# define EV_USE_SIGNALFD 0	323	# define EV_USE_SIGNALFD 0
284	# endif	324	# endif
285	#endif	325	#endif
286		326
…		…
289	# define EV_USE_4HEAP 1	329	# define EV_USE_4HEAP 1
290	# define EV_HEAP_CACHE_AT 1	330	# define EV_HEAP_CACHE_AT 1
291	#endif	331	#endif
292		332
293	#ifndef EV_VERIFY	333	#ifndef EV_VERIFY
294	# define EV_VERIFY !EV_MINIMAL	334	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
295	#endif	335	#endif
296		336
297	#ifndef EV_USE_4HEAP	337	#ifndef EV_USE_4HEAP
298	# define EV_USE_4HEAP !EV_MINIMAL	338	# define EV_USE_4HEAP EV_FEATURE_DATA
299	#endif	339	#endif
300		340
301	#ifndef EV_HEAP_CACHE_AT	341	#ifndef EV_HEAP_CACHE_AT
302	# define EV_HEAP_CACHE_AT !EV_MINIMAL	342	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
303	#endif	343	#endif
304		344
305	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	345	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
306	/* which makes programs even slower. might work on other unices, too. */	346	/* which makes programs even slower. might work on other unices, too. */
307	#if EV_USE_CLOCK_SYSCALL	347	#if EV_USE_CLOCK_SYSCALL
…		…
316	# endif	356	# endif
317	#endif	357	#endif
318		358
319	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	359	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
320		360
		361	#ifdef _AIX
		362	/* AIX has a completely broken poll.h header */
		363	# undef EV_USE_POLL
		364	# define EV_USE_POLL 0
		365	#endif
		366
321	#ifndef CLOCK_MONOTONIC	367	#ifndef CLOCK_MONOTONIC
322	# undef EV_USE_MONOTONIC	368	# undef EV_USE_MONOTONIC
323	# define EV_USE_MONOTONIC 0	369	# define EV_USE_MONOTONIC 0
324	#endif	370	#endif
325		371
…		…
359	# include <stdint.h>	405	# include <stdint.h>
360	# ifndef EFD_NONBLOCK	406	# ifndef EFD_NONBLOCK
361	# define EFD_NONBLOCK O_NONBLOCK	407	# define EFD_NONBLOCK O_NONBLOCK
362	# endif	408	# endif
363	# ifndef EFD_CLOEXEC	409	# ifndef EFD_CLOEXEC
		410	# ifdef O_CLOEXEC
364	# define EFD_CLOEXEC O_CLOEXEC	411	# define EFD_CLOEXEC O_CLOEXEC
		412	# else
		413	# define EFD_CLOEXEC 02000000
		414	# endif
365	# endif	415	# endif
366	# ifdef __cplusplus	416	# ifdef __cplusplus
367	extern "C" {	417	extern "C" {
368	# endif	418	# endif
369	int eventfd (unsigned int initval, int flags);	419	int (eventfd) (unsigned int initval, int flags);
370	# ifdef __cplusplus	420	# ifdef __cplusplus
371	}	421	}
372	# endif	422	# endif
373	#endif	423	#endif
374		424
375	#if EV_USE_SIGNALFD	425	#if EV_USE_SIGNALFD
376	# include <sys/signalfd.h>	426	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		427	# include <stdint.h>
		428	# ifndef SFD_NONBLOCK
		429	# define SFD_NONBLOCK O_NONBLOCK
377	#endif	430	# endif
		431	# ifndef SFD_CLOEXEC
		432	# ifdef O_CLOEXEC
		433	# define SFD_CLOEXEC O_CLOEXEC
		434	# else
		435	# define SFD_CLOEXEC 02000000
		436	# endif
		437	# endif
		438	# ifdef __cplusplus
		439	extern "C" {
		440	# endif
		441	int signalfd (int fd, const sigset_t *mask, int flags);
		442
		443	struct signalfd_siginfo
		444	{
		445	uint32_t ssi_signo;
		446	char pad[128 - sizeof (uint32_t)];
		447	};
		448	# ifdef __cplusplus
		449	}
		450	# endif
		451	#endif
		452
378		453
379	/**/	454	/**/
380		455
381	#if EV_VERIFY >= 3	456	#if EV_VERIFY >= 3
382	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	457	# define EV_FREQUENT_CHECK ev_verify (EV_A)
383	#else	458	#else
384	# define EV_FREQUENT_CHECK do { } while (0)	459	# define EV_FREQUENT_CHECK do { } while (0)
385	#endif	460	#endif
386		461
387	/*	462	/*
…		…
394	*/	469	*/
395	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	470	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
396		471
397	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	472	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
398	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	473	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
399	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
400		474
401	#if __GNUC__ >= 4	475	#if __GNUC__ >= 4
402	# define expect(expr,value) __builtin_expect ((expr),(value))	476	# define expect(expr,value) __builtin_expect ((expr),(value))
403	# define noinline __attribute__ ((noinline))	477	# define noinline __attribute__ ((noinline))
404	#else	478	#else
…		…
411		485
412	#define expect_false(expr) expect ((expr) != 0, 0)	486	#define expect_false(expr) expect ((expr) != 0, 0)
413	#define expect_true(expr) expect ((expr) != 0, 1)	487	#define expect_true(expr) expect ((expr) != 0, 1)
414	#define inline_size static inline	488	#define inline_size static inline
415		489
416	#if EV_MINIMAL	490	#if EV_FEATURE_CODE
		491	# define inline_speed static inline
		492	#else
417	# define inline_speed static noinline	493	# define inline_speed static noinline
418	#else
419	# define inline_speed static inline
420	#endif	494	#endif
421		495
422	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	496	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
423		497
424	#if EV_MINPRI == EV_MAXPRI	498	#if EV_MINPRI == EV_MAXPRI
…		…
437	#define ev_active(w) ((W)(w))->active	511	#define ev_active(w) ((W)(w))->active
438	#define ev_at(w) ((WT)(w))->at	512	#define ev_at(w) ((WT)(w))->at
439		513
440	#if EV_USE_REALTIME	514	#if EV_USE_REALTIME
441	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	515	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
442	/* giving it a reasonably high chance of working on typical architetcures */	516	/* giving it a reasonably high chance of working on typical architectures */
443	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	517	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
444	#endif	518	#endif
445		519
446	#if EV_USE_MONOTONIC	520	#if EV_USE_MONOTONIC
447	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	521	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
448	#endif	522	#endif
449		523
		524	#ifndef EV_FD_TO_WIN32_HANDLE
		525	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		526	#endif
		527	#ifndef EV_WIN32_HANDLE_TO_FD
		528	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		529	#endif
		530	#ifndef EV_WIN32_CLOSE_FD
		531	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		532	#endif
		533
450	#ifdef _WIN32	534	#ifdef _WIN32
451	# include "ev_win32.c"	535	# include "ev_win32.c"
452	#endif	536	#endif
453		537
454	/*****************************************************************************/	538	/*****************************************************************************/
		539
		540	#if EV_AVOID_STDIO
		541	static void noinline
		542	ev_printerr (const char *msg)
		543	{
		544	write (STDERR_FILENO, msg, strlen (msg));
		545	}
		546	#endif
455		547
456	static void (*syserr_cb)(const char *msg);	548	static void (*syserr_cb)(const char *msg);
457		549
458	void	550	void
459	ev_set_syserr_cb (void (*cb)(const char *msg))	551	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
469		561
470	if (syserr_cb)	562	if (syserr_cb)
471	syserr_cb (msg);	563	syserr_cb (msg);
472	else	564	else
473	{	565	{
		566	#if EV_AVOID_STDIO
		567	const char *err = strerror (errno);
		568
		569	ev_printerr (msg);
		570	ev_printerr (": ");
		571	ev_printerr (err);
		572	ev_printerr ("\n");
		573	#else
474	perror (msg);	574	perror (msg);
		575	#endif
475	abort ();	576	abort ();
476	}	577	}
477	}	578	}
478		579
479	static void *	580	static void *
480	ev_realloc_emul (void *ptr, long size)	581	ev_realloc_emul (void *ptr, long size)
481	{	582	{
		583	#if __GLIBC__
		584	return realloc (ptr, size);
		585	#else
482	/* some systems, notably openbsd and darwin, fail to properly	586	/* some systems, notably openbsd and darwin, fail to properly
483	* implement realloc (x, 0) (as required by both ansi c-98 and	587	* implement realloc (x, 0) (as required by both ansi c-89 and
484	* the single unix specification, so work around them here.	588	* the single unix specification, so work around them here.
485	*/	589	*/
486		590
487	if (size)	591	if (size)
488	return realloc (ptr, size);	592	return realloc (ptr, size);
489		593
490	free (ptr);	594	free (ptr);
491	return 0;	595	return 0;
		596	#endif
492	}	597	}
493		598
494	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	599	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
495		600
496	void	601	void
…		…
504	{	609	{
505	ptr = alloc (ptr, size);	610	ptr = alloc (ptr, size);
506		611
507	if (!ptr && size)	612	if (!ptr && size)
508	{	613	{
		614	#if EV_AVOID_STDIO
		615	ev_printerr ("libev: memory allocation failed, aborting.\n");
		616	#else
509	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	617	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		618	#endif
510	abort ();	619	abort ();
511	}	620	}
512		621
513	return ptr;	622	return ptr;
514	}	623	}
…		…
596		705
597	static int ev_default_loop_ptr;	706	static int ev_default_loop_ptr;
598		707
599	#endif	708	#endif
600		709
601	#if EV_MINIMAL < 2	710	#if EV_FEATURE_API
602	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)	711	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
603	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)	712	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
604	# define EV_INVOKE_PENDING invoke_cb (EV_A)	713	# define EV_INVOKE_PENDING invoke_cb (EV_A)
605	#else	714	#else
606	# define EV_RELEASE_CB (void)0	715	# define EV_RELEASE_CB (void)0
…		…
685	/*****************************************************************************/	794	/*****************************************************************************/
686		795
687	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	796	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
688		797
689	/* find a suitable new size for the given array, */	798	/* find a suitable new size for the given array, */
690	/* hopefully by rounding to a ncie-to-malloc size */	799	/* hopefully by rounding to a nice-to-malloc size */
691	inline_size int	800	inline_size int
692	array_nextsize (int elem, int cur, int cnt)	801	array_nextsize (int elem, int cur, int cnt)
693	{	802	{
694	int ncur = cur + 1;	803	int ncur = cur + 1;
695		804
…		…
791	}	900	}
792		901
793	/*****************************************************************************/	902	/*****************************************************************************/
794		903
795	inline_speed void	904	inline_speed void
796	fd_event_nc (EV_P_ int fd, int revents)	905	fd_event_nocheck (EV_P_ int fd, int revents)
797	{	906	{
798	ANFD *anfd = anfds + fd;	907	ANFD *anfd = anfds + fd;
799	ev_io *w;	908	ev_io *w;
800		909
801	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	910	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
813	fd_event (EV_P_ int fd, int revents)	922	fd_event (EV_P_ int fd, int revents)
814	{	923	{
815	ANFD *anfd = anfds + fd;	924	ANFD *anfd = anfds + fd;
816		925
817	if (expect_true (!anfd->reify))	926	if (expect_true (!anfd->reify))
818	fd_event_nc (EV_A_ fd, revents);	927	fd_event_nocheck (EV_A_ fd, revents);
819	}	928	}
820		929
821	void	930	void
822	ev_feed_fd_event (EV_P_ int fd, int revents)	931	ev_feed_fd_event (EV_P_ int fd, int revents)
823	{	932	{
824	if (fd >= 0 && fd < anfdmax)	933	if (fd >= 0 && fd < anfdmax)
825	fd_event_nc (EV_A_ fd, revents);	934	fd_event_nocheck (EV_A_ fd, revents);
826	}	935	}
827		936
828	/* make sure the external fd watch events are in-sync */	937	/* make sure the external fd watch events are in-sync */
829	/* with the kernel/libev internal state */	938	/* with the kernel/libev internal state */
830	inline_size void	939	inline_size void
…		…
845		954
846	#if EV_SELECT_IS_WINSOCKET	955	#if EV_SELECT_IS_WINSOCKET
847	if (events)	956	if (events)
848	{	957	{
849	unsigned long arg;	958	unsigned long arg;
850	#ifdef EV_FD_TO_WIN32_HANDLE
851	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	959	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
852	#else
853	anfd->handle = _get_osfhandle (fd);
854	#endif
855	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	960	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
856	}	961	}
857	#endif	962	#endif
858		963
859	{	964	{
…		…
897	ev_io_stop (EV_A_ w);	1002	ev_io_stop (EV_A_ w);
898	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1003	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
899	}	1004	}
900	}	1005	}
901		1006
902	/* check whether the given fd is atcually valid, for error recovery */	1007	/* check whether the given fd is actually valid, for error recovery */
903	inline_size int	1008	inline_size int
904	fd_valid (int fd)	1009	fd_valid (int fd)
905	{	1010	{
906	#ifdef _WIN32	1011	#ifdef _WIN32
907	return _get_osfhandle (fd) != -1;	1012	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
908	#else	1013	#else
909	return fcntl (fd, F_GETFD) != -1;	1014	return fcntl (fd, F_GETFD) != -1;
910	#endif	1015	#endif
911	}	1016	}
912		1017
…		…
930		1035
931	for (fd = anfdmax; fd--; )	1036	for (fd = anfdmax; fd--; )
932	if (anfds [fd].events)	1037	if (anfds [fd].events)
933	{	1038	{
934	fd_kill (EV_A_ fd);	1039	fd_kill (EV_A_ fd);
935	return;	1040	break;
936	}	1041	}
937	}	1042	}
938		1043
939	/* usually called after fork if backend needs to re-arm all fds from scratch */	1044	/* usually called after fork if backend needs to re-arm all fds from scratch */
940	static void noinline	1045	static void noinline
…		…
949	anfds [fd].emask = 0;	1054	anfds [fd].emask = 0;
950	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);	1055	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
951	}	1056	}
952	}	1057	}
953		1058
		1059	/* used to prepare libev internal fd's */
		1060	/* this is not fork-safe */
		1061	inline_speed void
		1062	fd_intern (int fd)
		1063	{
		1064	#ifdef _WIN32
		1065	unsigned long arg = 1;
		1066	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1067	#else
		1068	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1069	fcntl (fd, F_SETFL, O_NONBLOCK);
		1070	#endif
		1071	}
		1072
954	/*****************************************************************************/	1073	/*****************************************************************************/
955		1074
956	/*	1075	/*
957	* the heap functions want a real array index. array index 0 uis guaranteed to not	1076	* the heap functions want a real array index. array index 0 is guaranteed to not
958	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1077	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
959	* the branching factor of the d-tree.	1078	* the branching factor of the d-tree.
960	*/	1079	*/
961		1080
962	/*	1081	/*
…		…
1030		1149
1031	for (;;)	1150	for (;;)
1032	{	1151	{
1033	int c = k << 1;	1152	int c = k << 1;
1034		1153
1035	if (c > N + HEAP0 - 1)	1154	if (c >= N + HEAP0)
1036	break;	1155	break;
1037		1156
1038	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1157	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1039	? 1 : 0;	1158	? 1 : 0;
1040		1159
…		…
1076		1195
1077	/* move an element suitably so it is in a correct place */	1196	/* move an element suitably so it is in a correct place */
1078	inline_size void	1197	inline_size void
1079	adjustheap (ANHE *heap, int N, int k)	1198	adjustheap (ANHE *heap, int N, int k)
1080	{	1199	{
1081	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1200	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1082	upheap (heap, k);	1201	upheap (heap, k);
1083	else	1202	else
1084	downheap (heap, N, k);	1203	downheap (heap, N, k);
1085	}	1204	}
1086		1205
…		…
1099	/*****************************************************************************/	1218	/*****************************************************************************/
1100		1219
1101	/* associate signal watchers to a signal signal */	1220	/* associate signal watchers to a signal signal */
1102	typedef struct	1221	typedef struct
1103	{	1222	{
		1223	EV_ATOMIC_T pending;
		1224	#if EV_MULTIPLICITY
		1225	EV_P;
		1226	#endif
1104	WL head;	1227	WL head;
1105	EV_ATOMIC_T gotsig;
1106	} ANSIG;	1228	} ANSIG;
1107		1229
1108	static ANSIG *signals;	1230	static ANSIG signals [EV_NSIG - 1];
1109	static int signalmax;
1110
1111	static EV_ATOMIC_T gotsig;
1112		1231
1113	/*****************************************************************************/	1232	/*****************************************************************************/
1114		1233
1115	/* used to prepare libev internal fd's */	1234	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1116	/* this is not fork-safe */
1117	inline_speed void
1118	fd_intern (int fd)
1119	{
1120	#ifdef _WIN32
1121	unsigned long arg = 1;
1122	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1123	#else
1124	fcntl (fd, F_SETFD, FD_CLOEXEC);
1125	fcntl (fd, F_SETFL, O_NONBLOCK);
1126	#endif
1127	}
1128		1235
1129	static void noinline	1236	static void noinline
1130	evpipe_init (EV_P)	1237	evpipe_init (EV_P)
1131	{	1238	{
1132	if (!ev_is_active (&pipe_w))	1239	if (!ev_is_active (&pipe_w))
1133	{	1240	{
1134	#if EV_USE_EVENTFD	1241	# if EV_USE_EVENTFD
1135	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);	1242	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1136	if (evfd < 0 && errno == EINVAL)	1243	if (evfd < 0 && errno == EINVAL)
1137	evfd = eventfd (0, 0);	1244	evfd = eventfd (0, 0);
1138		1245
1139	if (evfd >= 0)	1246	if (evfd >= 0)
…		…
1141	evpipe [0] = -1;	1248	evpipe [0] = -1;
1142	fd_intern (evfd); /* doing it twice doesn't hurt */	1249	fd_intern (evfd); /* doing it twice doesn't hurt */
1143	ev_io_set (&pipe_w, evfd, EV_READ);	1250	ev_io_set (&pipe_w, evfd, EV_READ);
1144	}	1251	}
1145	else	1252	else
1146	#endif	1253	# endif
1147	{	1254	{
1148	while (pipe (evpipe))	1255	while (pipe (evpipe))
1149	ev_syserr ("(libev) error creating signal/async pipe");	1256	ev_syserr ("(libev) error creating signal/async pipe");
1150		1257
1151	fd_intern (evpipe [0]);	1258	fd_intern (evpipe [0]);
…		…
1162	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1269	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1163	{	1270	{
1164	if (!*flag)	1271	if (!*flag)
1165	{	1272	{
1166	int old_errno = errno; /* save errno because write might clobber it */	1273	int old_errno = errno; /* save errno because write might clobber it */
		1274	char dummy;
1167		1275
1168	*flag = 1;	1276	*flag = 1;
1169		1277
1170	#if EV_USE_EVENTFD	1278	#if EV_USE_EVENTFD
1171	if (evfd >= 0)	1279	if (evfd >= 0)
…		…
1173	uint64_t counter = 1;	1281	uint64_t counter = 1;
1174	write (evfd, &counter, sizeof (uint64_t));	1282	write (evfd, &counter, sizeof (uint64_t));
1175	}	1283	}
1176	else	1284	else
1177	#endif	1285	#endif
		1286	/* win32 people keep sending patches that change this write() to send() */
		1287	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1288	/* so when you think this write should be a send instead, please find out */
		1289	/* where your send() is from - it's definitely not the microsoft send, and */
		1290	/* tell me. thank you. */
1178	write (evpipe [1], &old_errno, 1);	1291	write (evpipe [1], &dummy, 1);
1179		1292
1180	errno = old_errno;	1293	errno = old_errno;
1181	}	1294	}
1182	}	1295	}
1183		1296
1184	/* called whenever the libev signal pipe */	1297	/* called whenever the libev signal pipe */
1185	/* got some events (signal, async) */	1298	/* got some events (signal, async) */
1186	static void	1299	static void
1187	pipecb (EV_P_ ev_io *iow, int revents)	1300	pipecb (EV_P_ ev_io *iow, int revents)
1188	{	1301	{
		1302	int i;
		1303
1189	#if EV_USE_EVENTFD	1304	#if EV_USE_EVENTFD
1190	if (evfd >= 0)	1305	if (evfd >= 0)
1191	{	1306	{
1192	uint64_t counter;	1307	uint64_t counter;
1193	read (evfd, &counter, sizeof (uint64_t));	1308	read (evfd, &counter, sizeof (uint64_t));
1194	}	1309	}
1195	else	1310	else
1196	#endif	1311	#endif
1197	{	1312	{
1198	char dummy;	1313	char dummy;
		1314	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1199	read (evpipe [0], &dummy, 1);	1315	read (evpipe [0], &dummy, 1);
1200	}	1316	}
1201		1317
1202	if (gotsig && ev_is_default_loop (EV_A))	1318	if (sig_pending)
1203	{	1319	{
1204	int signum;	1320	sig_pending = 0;
1205	gotsig = 0;
1206		1321
1207	for (signum = signalmax; signum--; )	1322	for (i = EV_NSIG - 1; i--; )
1208	if (signals [signum].gotsig)	1323	if (expect_false (signals [i].pending))
1209	ev_feed_signal_event (EV_A_ signum + 1);	1324	ev_feed_signal_event (EV_A_ i + 1);
1210	}	1325	}
1211		1326
1212	#if EV_ASYNC_ENABLE	1327	#if EV_ASYNC_ENABLE
1213	if (gotasync)	1328	if (async_pending)
1214	{	1329	{
1215	int i;	1330	async_pending = 0;
1216	gotasync = 0;
1217		1331
1218	for (i = asynccnt; i--; )	1332	for (i = asynccnt; i--; )
1219	if (asyncs [i]->sent)	1333	if (asyncs [i]->sent)
1220	{	1334	{
1221	asyncs [i]->sent = 0;	1335	asyncs [i]->sent = 0;
…		…
1229		1343
1230	static void	1344	static void
1231	ev_sighandler (int signum)	1345	ev_sighandler (int signum)
1232	{	1346	{
1233	#if EV_MULTIPLICITY	1347	#if EV_MULTIPLICITY
1234	struct ev_loop *loop = &default_loop_struct;	1348	EV_P = signals [signum - 1].loop;
1235	#endif	1349	#endif
1236		1350
1237	#if _WIN32	1351	#ifdef _WIN32
1238	signal (signum, ev_sighandler);	1352	signal (signum, ev_sighandler);
1239	#endif	1353	#endif
1240		1354
1241	signals [signum - 1].gotsig = 1;	1355	signals [signum - 1].pending = 1;
1242	evpipe_write (EV_A_ &gotsig);	1356	evpipe_write (EV_A_ &sig_pending);
1243	}	1357	}
1244		1358
1245	void noinline	1359	void noinline
1246	ev_feed_signal_event (EV_P_ int signum)	1360	ev_feed_signal_event (EV_P_ int signum)
1247	{	1361	{
1248	WL w;	1362	WL w;
1249		1363
		1364	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1365	return;
		1366
		1367	--signum;
		1368
1250	#if EV_MULTIPLICITY	1369	#if EV_MULTIPLICITY
1251	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1370	/* it is permissible to try to feed a signal to the wrong loop */
1252	#endif	1371	/* or, likely more useful, feeding a signal nobody is waiting for */
1253		1372
1254	--signum;	1373	if (expect_false (signals [signum].loop != EV_A))
1255
1256	if (signum < 0 || signum >= signalmax)
1257	return;	1374	return;
		1375	#endif
1258		1376
1259	signals [signum].gotsig = 0;	1377	signals [signum].pending = 0;
1260		1378
1261	for (w = signals [signum].head; w; w = w->next)	1379	for (w = signals [signum].head; w; w = w->next)
1262	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1380	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263	}	1381	}
1264		1382
1265	#if EV_USE_SIGNALFD	1383	#if EV_USE_SIGNALFD
1266	static void	1384	static void
1267	sigfdcb (EV_P_ ev_io *iow, int revents)	1385	sigfdcb (EV_P_ ev_io *iow, int revents)
1268	{	1386	{
1269	struct signalfd_siginfo si[4], *sip;	1387	struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270		1388
1271	for (;;)	1389	for (;;)
1272	{	1390	{
1273	ssize_t res = read (sigfd, si, sizeof (si));	1391	ssize_t res = read (sigfd, si, sizeof (si));
1274		1392
…		…
1280	break;	1398	break;
1281	}	1399	}
1282	}	1400	}
1283	#endif	1401	#endif
1284		1402
		1403	#endif
		1404
1285	/*****************************************************************************/	1405	/*****************************************************************************/
1286		1406
		1407	#if EV_CHILD_ENABLE
1287	static WL childs [EV_PID_HASHSIZE];	1408	static WL childs [EV_PID_HASHSIZE];
1288
1289	#ifndef _WIN32
1290		1409
1291	static ev_signal childev;	1410	static ev_signal childev;
1292		1411
1293	#ifndef WIFCONTINUED	1412	#ifndef WIFCONTINUED
1294	# define WIFCONTINUED(status) 0	1413	# define WIFCONTINUED(status) 0
…		…
1299	child_reap (EV_P_ int chain, int pid, int status)	1418	child_reap (EV_P_ int chain, int pid, int status)
1300	{	1419	{
1301	ev_child *w;	1420	ev_child *w;
1302	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1421	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303		1422
1304	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1423	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305	{	1424	{
1306	if ((w->pid == pid || !w->pid)	1425	if ((w->pid == pid || !w->pid)
1307	&& (!traced || (w->flags & 1)))	1426	&& (!traced || (w->flags & 1)))
1308	{	1427	{
1309	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1428	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
1334	/* make sure we are called again until all children have been reaped */	1453	/* make sure we are called again until all children have been reaped */
1335	/* we need to do it this way so that the callback gets called before we continue */	1454	/* we need to do it this way so that the callback gets called before we continue */
1336	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1455	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337		1456
1338	child_reap (EV_A_ pid, pid, status);	1457	child_reap (EV_A_ pid, pid, status);
1339	if (EV_PID_HASHSIZE > 1)	1458	if ((EV_PID_HASHSIZE) > 1)
1340	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1459	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341	}	1460	}
1342		1461
1343	#endif	1462	#endif
1344		1463
…		…
1411	#ifdef __APPLE__	1530	#ifdef __APPLE__
1412	/* only select works correctly on that "unix-certified" platform */	1531	/* only select works correctly on that "unix-certified" platform */
1413	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1532	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1533	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415	#endif	1534	#endif
		1535	#ifdef __FreeBSD__
		1536	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1537	#endif
1416		1538
1417	return flags;	1539	return flags;
1418	}	1540	}
1419		1541
1420	unsigned int	1542	unsigned int
…		…
1433	ev_backend (EV_P)	1555	ev_backend (EV_P)
1434	{	1556	{
1435	return backend;	1557	return backend;
1436	}	1558	}
1437		1559
1438	#if EV_MINIMAL < 2	1560	#if EV_FEATURE_API
1439	unsigned int	1561	unsigned int
1440	ev_loop_count (EV_P)	1562	ev_iteration (EV_P)
1441	{	1563	{
1442	return loop_count;	1564	return loop_count;
1443	}	1565	}
1444		1566
1445	unsigned int	1567	unsigned int
1446	ev_loop_depth (EV_P)	1568	ev_depth (EV_P)
1447	{	1569	{
1448	return loop_depth;	1570	return loop_depth;
1449	}	1571	}
1450		1572
1451	void	1573	void
…		…
1508	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1630	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509	have_monotonic = 1;	1631	have_monotonic = 1;
1510	}	1632	}
1511	#endif	1633	#endif
1512		1634
		1635	/* pid check not overridable via env */
		1636	#ifndef _WIN32
		1637	if (flags & EVFLAG_FORKCHECK)
		1638	curpid = getpid ();
		1639	#endif
		1640
		1641	if (!(flags & EVFLAG_NOENV)
		1642	&& !enable_secure ()
		1643	&& getenv ("LIBEV_FLAGS"))
		1644	flags = atoi (getenv ("LIBEV_FLAGS"));
		1645
1513	ev_rt_now = ev_time ();	1646	ev_rt_now = ev_time ();
1514	mn_now = get_clock ();	1647	mn_now = get_clock ();
1515	now_floor = mn_now;	1648	now_floor = mn_now;
1516	rtmn_diff = ev_rt_now - mn_now;	1649	rtmn_diff = ev_rt_now - mn_now;
1517	#if EV_MINIMAL < 2	1650	#if EV_FEATURE_API
1518	invoke_cb = ev_invoke_pending;	1651	invoke_cb = ev_invoke_pending;
1519	#endif	1652	#endif
1520		1653
1521	io_blocktime = 0.;	1654	io_blocktime = 0.;
1522	timeout_blocktime = 0.;	1655	timeout_blocktime = 0.;
1523	backend = 0;	1656	backend = 0;
1524	backend_fd = -1;	1657	backend_fd = -1;
1525	gotasync = 0;	1658	sig_pending = 0;
		1659	#if EV_ASYNC_ENABLE
		1660	async_pending = 0;
		1661	#endif
1526	#if EV_USE_INOTIFY	1662	#if EV_USE_INOTIFY
1527	fs_fd = -2;	1663	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1528	#endif	1664	#endif
1529	#if EV_USE_SIGNALFD	1665	#if EV_USE_SIGNALFD
1530	sigfd = -2;	1666	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1531	#endif	1667	#endif
1532
1533	/* pid check not overridable via env */
1534	#ifndef _WIN32
1535	if (flags & EVFLAG_FORKCHECK)
1536	curpid = getpid ();
1537	#endif
1538
1539	if (!(flags & EVFLAG_NOENV)
1540	&& !enable_secure ()
1541	&& getenv ("LIBEV_FLAGS"))
1542	flags = atoi (getenv ("LIBEV_FLAGS"));
1543		1668
1544	if (!(flags & 0x0000ffffU))	1669	if (!(flags & 0x0000ffffU))
1545	flags |= ev_recommended_backends ();	1670	flags |= ev_recommended_backends ();
1546		1671
1547	#if EV_USE_PORT	1672	#if EV_USE_PORT
…		…
1560	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1685	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561	#endif	1686	#endif
1562		1687
1563	ev_prepare_init (&pending_w, pendingcb);	1688	ev_prepare_init (&pending_w, pendingcb);
1564		1689
		1690	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565	ev_init (&pipe_w, pipecb);	1691	ev_init (&pipe_w, pipecb);
1566	ev_set_priority (&pipe_w, EV_MAXPRI);	1692	ev_set_priority (&pipe_w, EV_MAXPRI);
		1693	#endif
1567	}	1694	}
1568	}	1695	}
1569		1696
1570	/* free up a loop structure */	1697	/* free up a loop structure */
1571	static void noinline	1698	static void noinline
…		…
1583	close (evfd);	1710	close (evfd);
1584	#endif	1711	#endif
1585		1712
1586	if (evpipe [0] >= 0)	1713	if (evpipe [0] >= 0)
1587	{	1714	{
1588	close (evpipe [0]);	1715	EV_WIN32_CLOSE_FD (evpipe [0]);
1589	close (evpipe [1]);	1716	EV_WIN32_CLOSE_FD (evpipe [1]);
1590	}	1717	}
1591	}	1718	}
1592		1719
1593	#if EV_USE_SIGNALFD	1720	#if EV_USE_SIGNALFD
1594	if (ev_is_active (&sigfd_w))	1721	if (ev_is_active (&sigfd_w))
1595	{
1596	/*ev_ref (EV_A);*/
1597	/*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599	close (sigfd);	1722	close (sigfd);
1600	}
1601	#endif	1723	#endif
1602		1724
1603	#if EV_USE_INOTIFY	1725	#if EV_USE_INOTIFY
1604	if (fs_fd >= 0)	1726	if (fs_fd >= 0)
1605	close (fs_fd);	1727	close (fs_fd);
…		…
1630	#if EV_IDLE_ENABLE	1752	#if EV_IDLE_ENABLE
1631	array_free (idle, [i]);	1753	array_free (idle, [i]);
1632	#endif	1754	#endif
1633	}	1755	}
1634		1756
1635	ev_free (anfds); anfdmax = 0;	1757	ev_free (anfds); anfds = 0; anfdmax = 0;
1636		1758
1637	/* have to use the microsoft-never-gets-it-right macro */	1759	/* have to use the microsoft-never-gets-it-right macro */
1638	array_free (rfeed, EMPTY);	1760	array_free (rfeed, EMPTY);
1639	array_free (fdchange, EMPTY);	1761	array_free (fdchange, EMPTY);
1640	array_free (timer, EMPTY);	1762	array_free (timer, EMPTY);
…		…
1675		1797
1676	if (ev_is_active (&pipe_w))	1798	if (ev_is_active (&pipe_w))
1677	{	1799	{
1678	/* this "locks" the handlers against writing to the pipe */	1800	/* this "locks" the handlers against writing to the pipe */
1679	/* while we modify the fd vars */	1801	/* while we modify the fd vars */
1680	gotsig = 1;	1802	sig_pending = 1;
1681	#if EV_ASYNC_ENABLE	1803	#if EV_ASYNC_ENABLE
1682	gotasync = 1;	1804	async_pending = 1;
1683	#endif	1805	#endif
1684		1806
1685	ev_ref (EV_A);	1807	ev_ref (EV_A);
1686	ev_io_stop (EV_A_ &pipe_w);	1808	ev_io_stop (EV_A_ &pipe_w);
1687		1809
…		…
1690	close (evfd);	1812	close (evfd);
1691	#endif	1813	#endif
1692		1814
1693	if (evpipe [0] >= 0)	1815	if (evpipe [0] >= 0)
1694	{	1816	{
1695	close (evpipe [0]);	1817	EV_WIN32_CLOSE_FD (evpipe [0]);
1696	close (evpipe [1]);	1818	EV_WIN32_CLOSE_FD (evpipe [1]);
1697	}	1819	}
1698		1820
		1821	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1699	evpipe_init (EV_A);	1822	evpipe_init (EV_A);
1700	/* now iterate over everything, in case we missed something */	1823	/* now iterate over everything, in case we missed something */
1701	pipecb (EV_A_ &pipe_w, EV_READ);	1824	pipecb (EV_A_ &pipe_w, EV_READ);
		1825	#endif
1702	}	1826	}
1703		1827
1704	postfork = 0;	1828	postfork = 0;
1705	}	1829	}
1706		1830
1707	#if EV_MULTIPLICITY	1831	#if EV_MULTIPLICITY
1708		1832
1709	struct ev_loop *	1833	struct ev_loop *
1710	ev_loop_new (unsigned int flags)	1834	ev_loop_new (unsigned int flags)
1711	{	1835	{
1712	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1836	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713		1837
1714	memset (loop, 0, sizeof (struct ev_loop));	1838	memset (EV_A, 0, sizeof (struct ev_loop));
1715	loop_init (EV_A_ flags);	1839	loop_init (EV_A_ flags);
1716		1840
1717	if (ev_backend (EV_A))	1841	if (ev_backend (EV_A))
1718	return loop;	1842	return EV_A;
1719		1843
1720	return 0;	1844	return 0;
1721	}	1845	}
1722		1846
1723	void	1847	void
…		…
1768	verify_watcher (EV_A_ ws [cnt]);	1892	verify_watcher (EV_A_ ws [cnt]);
1769	}	1893	}
1770	}	1894	}
1771	#endif	1895	#endif
1772		1896
1773	#if EV_MINIMAL < 2	1897	#if EV_FEATURE_API
1774	void	1898	void
1775	ev_loop_verify (EV_P)	1899	ev_verify (EV_P)
1776	{	1900	{
1777	#if EV_VERIFY	1901	#if EV_VERIFY
1778	int i;	1902	int i;
1779	WL w;	1903	WL w;
1780		1904
…		…
1819	#if EV_ASYNC_ENABLE	1943	#if EV_ASYNC_ENABLE
1820	assert (asyncmax >= asynccnt);	1944	assert (asyncmax >= asynccnt);
1821	array_verify (EV_A_ (W *)asyncs, asynccnt);	1945	array_verify (EV_A_ (W *)asyncs, asynccnt);
1822	#endif	1946	#endif
1823		1947
		1948	#if EV_PREPARE_ENABLE
1824	assert (preparemax >= preparecnt);	1949	assert (preparemax >= preparecnt);
1825	array_verify (EV_A_ (W *)prepares, preparecnt);	1950	array_verify (EV_A_ (W *)prepares, preparecnt);
		1951	#endif
1826		1952
		1953	#if EV_CHECK_ENABLE
1827	assert (checkmax >= checkcnt);	1954	assert (checkmax >= checkcnt);
1828	array_verify (EV_A_ (W *)checks, checkcnt);	1955	array_verify (EV_A_ (W *)checks, checkcnt);
		1956	#endif
1829		1957
1830	# if 0	1958	# if 0
		1959	#if EV_CHILD_ENABLE
1831	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1960	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1832	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1961	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1962	#endif
1833	# endif	1963	# endif
1834	#endif	1964	#endif
1835	}	1965	}
1836	#endif	1966	#endif
1837		1967
…		…
1844	#endif	1974	#endif
1845	{	1975	{
1846	if (!ev_default_loop_ptr)	1976	if (!ev_default_loop_ptr)
1847	{	1977	{
1848	#if EV_MULTIPLICITY	1978	#if EV_MULTIPLICITY
1849	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1979	EV_P = ev_default_loop_ptr = &default_loop_struct;
1850	#else	1980	#else
1851	ev_default_loop_ptr = 1;	1981	ev_default_loop_ptr = 1;
1852	#endif	1982	#endif
1853		1983
1854	loop_init (EV_A_ flags);	1984	loop_init (EV_A_ flags);
1855		1985
1856	if (ev_backend (EV_A))	1986	if (ev_backend (EV_A))
1857	{	1987	{
1858	#ifndef _WIN32	1988	#if EV_CHILD_ENABLE
1859	ev_signal_init (&childev, childcb, SIGCHLD);	1989	ev_signal_init (&childev, childcb, SIGCHLD);
1860	ev_set_priority (&childev, EV_MAXPRI);	1990	ev_set_priority (&childev, EV_MAXPRI);
1861	ev_signal_start (EV_A_ &childev);	1991	ev_signal_start (EV_A_ &childev);
1862	ev_unref (EV_A); /* child watcher should not keep loop alive */	1992	ev_unref (EV_A); /* child watcher should not keep loop alive */
1863	#endif	1993	#endif
…		…
1871		2001
1872	void	2002	void
1873	ev_default_destroy (void)	2003	ev_default_destroy (void)
1874	{	2004	{
1875	#if EV_MULTIPLICITY	2005	#if EV_MULTIPLICITY
1876	struct ev_loop *loop = ev_default_loop_ptr;	2006	EV_P = ev_default_loop_ptr;
1877	#endif	2007	#endif
1878		2008
1879	ev_default_loop_ptr = 0;	2009	ev_default_loop_ptr = 0;
1880		2010
1881	#ifndef _WIN32	2011	#if EV_CHILD_ENABLE
1882	ev_ref (EV_A); /* child watcher */	2012	ev_ref (EV_A); /* child watcher */
1883	ev_signal_stop (EV_A_ &childev);	2013	ev_signal_stop (EV_A_ &childev);
1884	#endif	2014	#endif
1885		2015
1886	loop_destroy (EV_A);	2016	loop_destroy (EV_A);
…		…
1888		2018
1889	void	2019	void
1890	ev_default_fork (void)	2020	ev_default_fork (void)
1891	{	2021	{
1892	#if EV_MULTIPLICITY	2022	#if EV_MULTIPLICITY
1893	struct ev_loop *loop = ev_default_loop_ptr;	2023	EV_P = ev_default_loop_ptr;
1894	#endif	2024	#endif
1895		2025
1896	postfork = 1; /* must be in line with ev_loop_fork */	2026	postfork = 1; /* must be in line with ev_loop_fork */
1897	}	2027	}
1898		2028
…		…
1992	EV_FREQUENT_CHECK;	2122	EV_FREQUENT_CHECK;
1993	feed_reverse (EV_A_ (W)w);	2123	feed_reverse (EV_A_ (W)w);
1994	}	2124	}
1995	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2125	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996		2126
1997	feed_reverse_done (EV_A_ EV_TIMEOUT);	2127	feed_reverse_done (EV_A_ EV_TIMER);
1998	}	2128	}
1999	}	2129	}
2000		2130
2001	#if EV_PERIODIC_ENABLE	2131	#if EV_PERIODIC_ENABLE
2002	/* make periodics pending */	2132	/* make periodics pending */
…		…
2055	feed_reverse_done (EV_A_ EV_PERIODIC);	2185	feed_reverse_done (EV_A_ EV_PERIODIC);
2056	}	2186	}
2057	}	2187	}
2058		2188
2059	/* simply recalculate all periodics */	2189	/* simply recalculate all periodics */
2060	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2190	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061	static void noinline	2191	static void noinline
2062	periodics_reschedule (EV_P)	2192	periodics_reschedule (EV_P)
2063	{	2193	{
2064	int i;	2194	int i;
2065		2195
…		…
2093	ANHE_at_cache (*he);	2223	ANHE_at_cache (*he);
2094	}	2224	}
2095	}	2225	}
2096		2226
2097	/* fetch new monotonic and realtime times from the kernel */	2227	/* fetch new monotonic and realtime times from the kernel */
2098	/* also detetc if there was a timejump, and act accordingly */	2228	/* also detect if there was a timejump, and act accordingly */
2099	inline_speed void	2229	inline_speed void
2100	time_update (EV_P_ ev_tstamp max_block)	2230	time_update (EV_P_ ev_tstamp max_block)
2101	{	2231	{
2102	#if EV_USE_MONOTONIC	2232	#if EV_USE_MONOTONIC
2103	if (expect_true (have_monotonic))	2233	if (expect_true (have_monotonic))
…		…
2163	}	2293	}
2164		2294
2165	void	2295	void
2166	ev_loop (EV_P_ int flags)	2296	ev_loop (EV_P_ int flags)
2167	{	2297	{
2168	#if EV_MINIMAL < 2	2298	#if EV_FEATURE_API
2169	++loop_depth;	2299	++loop_depth;
2170	#endif	2300	#endif
2171		2301
2172	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2302	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2173		2303
…		…
2176	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2306	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177		2307
2178	do	2308	do
2179	{	2309	{
2180	#if EV_VERIFY >= 2	2310	#if EV_VERIFY >= 2
2181	ev_loop_verify (EV_A);	2311	ev_verify (EV_A);
2182	#endif	2312	#endif
2183		2313
2184	#ifndef _WIN32	2314	#ifndef _WIN32
2185	if (expect_false (curpid)) /* penalise the forking check even more */	2315	if (expect_false (curpid)) /* penalise the forking check even more */
2186	if (expect_false (getpid () != curpid))	2316	if (expect_false (getpid () != curpid))
…		…
2198	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2328	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199	EV_INVOKE_PENDING;	2329	EV_INVOKE_PENDING;
2200	}	2330	}
2201	#endif	2331	#endif
2202		2332
		2333	#if EV_PREPARE_ENABLE
2203	/* queue prepare watchers (and execute them) */	2334	/* queue prepare watchers (and execute them) */
2204	if (expect_false (preparecnt))	2335	if (expect_false (preparecnt))
2205	{	2336	{
2206	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2337	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207	EV_INVOKE_PENDING;	2338	EV_INVOKE_PENDING;
2208	}	2339	}
		2340	#endif
2209		2341
2210	if (expect_false (loop_done))	2342	if (expect_false (loop_done))
2211	break;	2343	break;
2212		2344
2213	/* we might have forked, so reify kernel state if necessary */	2345	/* we might have forked, so reify kernel state if necessary */
…		…
2264	waittime -= sleeptime;	2396	waittime -= sleeptime;
2265	}	2397	}
2266	}	2398	}
2267	}	2399	}
2268		2400
2269	#if EV_MINIMAL < 2	2401	#if EV_FEATURE_API
2270	++loop_count;	2402	++loop_count;
2271	#endif	2403	#endif
2272	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2404	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2273	backend_poll (EV_A_ waittime);	2405	backend_poll (EV_A_ waittime);
2274	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2406	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
…		…
2286	#if EV_IDLE_ENABLE	2418	#if EV_IDLE_ENABLE
2287	/* queue idle watchers unless other events are pending */	2419	/* queue idle watchers unless other events are pending */
2288	idle_reify (EV_A);	2420	idle_reify (EV_A);
2289	#endif	2421	#endif
2290		2422
		2423	#if EV_CHECK_ENABLE
2291	/* queue check watchers, to be executed first */	2424	/* queue check watchers, to be executed first */
2292	if (expect_false (checkcnt))	2425	if (expect_false (checkcnt))
2293	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2426	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2427	#endif
2294		2428
2295	EV_INVOKE_PENDING;	2429	EV_INVOKE_PENDING;
2296	}	2430	}
2297	while (expect_true (	2431	while (expect_true (
2298	activecnt	2432	activecnt
…		…
2301	));	2435	));
2302		2436
2303	if (loop_done == EVUNLOOP_ONE)	2437	if (loop_done == EVUNLOOP_ONE)
2304	loop_done = EVUNLOOP_CANCEL;	2438	loop_done = EVUNLOOP_CANCEL;
2305		2439
2306	#if EV_MINIMAL < 2	2440	#if EV_FEATURE_API
2307	--loop_depth;	2441	--loop_depth;
2308	#endif	2442	#endif
2309	}	2443	}
2310		2444
2311	void	2445	void
…		…
2364	inline_size void	2498	inline_size void
2365	wlist_del (WL *head, WL elem)	2499	wlist_del (WL *head, WL elem)
2366	{	2500	{
2367	while (*head)	2501	while (*head)
2368	{	2502	{
2369	if (*head == elem)	2503	if (expect_true (*head == elem))
2370	{	2504	{
2371	*head = elem->next;	2505	*head = elem->next;
2372	return;	2506	break;
2373	}	2507	}
2374		2508
2375	head = &(*head)->next;	2509	head = &(*head)->next;
2376	}	2510	}
2377	}	2511	}
…		…
2437		2571
2438	if (expect_false (ev_is_active (w)))	2572	if (expect_false (ev_is_active (w)))
2439	return;	2573	return;
2440		2574
2441	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2575	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2442	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2576	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443		2577
2444	EV_FREQUENT_CHECK;	2578	EV_FREQUENT_CHECK;
2445		2579
2446	ev_start (EV_A_ (W)w, 1);	2580	ev_start (EV_A_ (W)w, 1);
2447	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2581	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2517	timers [active] = timers [timercnt + HEAP0];	2651	timers [active] = timers [timercnt + HEAP0];
2518	adjustheap (timers, timercnt, active);	2652	adjustheap (timers, timercnt, active);
2519	}	2653	}
2520	}	2654	}
2521		2655
2522	EV_FREQUENT_CHECK;
2523
2524	ev_at (w) -= mn_now;	2656	ev_at (w) -= mn_now;
2525		2657
2526	ev_stop (EV_A_ (W)w);	2658	ev_stop (EV_A_ (W)w);
		2659
		2660	EV_FREQUENT_CHECK;
2527	}	2661	}
2528		2662
2529	void noinline	2663	void noinline
2530	ev_timer_again (EV_P_ ev_timer *w)	2664	ev_timer_again (EV_P_ ev_timer *w)
2531	{	2665	{
…		…
2610	periodics [active] = periodics [periodiccnt + HEAP0];	2744	periodics [active] = periodics [periodiccnt + HEAP0];
2611	adjustheap (periodics, periodiccnt, active);	2745	adjustheap (periodics, periodiccnt, active);
2612	}	2746	}
2613	}	2747	}
2614		2748
2615	EV_FREQUENT_CHECK;
2616
2617	ev_stop (EV_A_ (W)w);	2749	ev_stop (EV_A_ (W)w);
		2750
		2751	EV_FREQUENT_CHECK;
2618	}	2752	}
2619		2753
2620	void noinline	2754	void noinline
2621	ev_periodic_again (EV_P_ ev_periodic *w)	2755	ev_periodic_again (EV_P_ ev_periodic *w)
2622	{	2756	{
…		…
2628		2762
2629	#ifndef SA_RESTART	2763	#ifndef SA_RESTART
2630	# define SA_RESTART 0	2764	# define SA_RESTART 0
2631	#endif	2765	#endif
2632		2766
		2767	#if EV_SIGNAL_ENABLE
		2768
2633	void noinline	2769	void noinline
2634	ev_signal_start (EV_P_ ev_signal *w)	2770	ev_signal_start (EV_P_ ev_signal *w)
2635	{	2771	{
2636	#if EV_MULTIPLICITY
2637	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2638	#endif
2639	if (expect_false (ev_is_active (w)))	2772	if (expect_false (ev_is_active (w)))
2640	return;	2773	return;
2641		2774
2642	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2775	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		2776
		2777	#if EV_MULTIPLICITY
		2778	assert (("libev: a signal must not be attached to two different loops",
		2779	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
		2780
		2781	signals [w->signum - 1].loop = EV_A;
		2782	#endif
2643		2783
2644	EV_FREQUENT_CHECK;	2784	EV_FREQUENT_CHECK;
2645		2785
2646	#if EV_USE_SIGNALFD	2786	#if EV_USE_SIGNALFD
2647	if (sigfd == -2)	2787	if (sigfd == -2)
…		…
2669	sigaddset (&sigfd_set, w->signum);	2809	sigaddset (&sigfd_set, w->signum);
2670	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2810	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671		2811
2672	signalfd (sigfd, &sigfd_set, 0);	2812	signalfd (sigfd, &sigfd_set, 0);
2673	}	2813	}
2674	else
2675	#endif
2676	evpipe_init (EV_A);
2677
2678	{
2679	#ifndef _WIN32
2680	sigset_t full, prev;
2681	sigfillset (&full);
2682	sigprocmask (SIG_SETMASK, &full, &prev);
2683	#endif
2684
2685	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2686
2687	#ifndef _WIN32
2688	# if EV_USE_SIGNALFD
2689	if (sigfd < 0)/*TODO*/
2690	# endif	2814	#endif
2691	sigdelset (&prev, w->signum);
2692	sigprocmask (SIG_SETMASK, &prev, 0);
2693	#endif
2694	}
2695		2815
2696	ev_start (EV_A_ (W)w, 1);	2816	ev_start (EV_A_ (W)w, 1);
2697	wlist_add (&signals [w->signum - 1].head, (WL)w);	2817	wlist_add (&signals [w->signum - 1].head, (WL)w);
2698		2818
2699	if (!((WL)w)->next)	2819	if (!((WL)w)->next)
2700	{
2701	#if _WIN32
2702	signal (w->signum, ev_sighandler);
2703	#else
2704	# if EV_USE_SIGNALFD	2820	# if EV_USE_SIGNALFD
2705	if (sigfd < 0) /*TODO*/	2821	if (sigfd < 0) /*TODO*/
2706	# endif	2822	# endif
2707	{	2823	{
		2824	# ifdef _WIN32
		2825	evpipe_init (EV_A);
		2826
		2827	signal (w->signum, ev_sighandler);
		2828	# else
2708	struct sigaction sa = { };	2829	struct sigaction sa;
		2830
		2831	evpipe_init (EV_A);
		2832
2709	sa.sa_handler = ev_sighandler;	2833	sa.sa_handler = ev_sighandler;
2710	sigfillset (&sa.sa_mask);	2834	sigfillset (&sa.sa_mask);
2711	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2835	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2712	sigaction (w->signum, &sa, 0);	2836	sigaction (w->signum, &sa, 0);
		2837
		2838	sigemptyset (&sa.sa_mask);
		2839	sigaddset (&sa.sa_mask, w->signum);
		2840	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2841	#endif
2713	}	2842	}
2714	#endif
2715	}
2716		2843
2717	EV_FREQUENT_CHECK;	2844	EV_FREQUENT_CHECK;
2718	}	2845	}
2719		2846
2720	void noinline	2847	void noinline
…		…
2728		2855
2729	wlist_del (&signals [w->signum - 1].head, (WL)w);	2856	wlist_del (&signals [w->signum - 1].head, (WL)w);
2730	ev_stop (EV_A_ (W)w);	2857	ev_stop (EV_A_ (W)w);
2731		2858
2732	if (!signals [w->signum - 1].head)	2859	if (!signals [w->signum - 1].head)
		2860	{
		2861	#if EV_MULTIPLICITY
		2862	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2863	#endif
2733	#if EV_USE_SIGNALFD	2864	#if EV_USE_SIGNALFD
2734	if (sigfd >= 0)	2865	if (sigfd >= 0)
2735	{	2866	{
2736	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2867	sigset_t ss;
		2868
		2869	sigemptyset (&ss);
		2870	sigaddset (&ss, w->signum);
2737	sigdelset (&sigfd_set, w->signum);	2871	sigdelset (&sigfd_set, w->signum);
		2872
2738	signalfd (sigfd, &sigfd_set, 0);	2873	signalfd (sigfd, &sigfd_set, 0);
2739	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2874	sigprocmask (SIG_UNBLOCK, &ss, 0);
2740	/*TODO: maybe unblock signal? */
2741	}	2875	}
2742	else	2876	else
2743	#endif	2877	#endif
2744	signal (w->signum, SIG_DFL);	2878	signal (w->signum, SIG_DFL);
		2879	}
2745		2880
2746	EV_FREQUENT_CHECK;	2881	EV_FREQUENT_CHECK;
2747	}	2882	}
		2883
		2884	#endif
		2885
		2886	#if EV_CHILD_ENABLE
2748		2887
2749	void	2888	void
2750	ev_child_start (EV_P_ ev_child *w)	2889	ev_child_start (EV_P_ ev_child *w)
2751	{	2890	{
2752	#if EV_MULTIPLICITY	2891	#if EV_MULTIPLICITY
…		…
2756	return;	2895	return;
2757		2896
2758	EV_FREQUENT_CHECK;	2897	EV_FREQUENT_CHECK;
2759		2898
2760	ev_start (EV_A_ (W)w, 1);	2899	ev_start (EV_A_ (W)w, 1);
2761	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2900	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2762		2901
2763	EV_FREQUENT_CHECK;	2902	EV_FREQUENT_CHECK;
2764	}	2903	}
2765		2904
2766	void	2905	void
…		…
2770	if (expect_false (!ev_is_active (w)))	2909	if (expect_false (!ev_is_active (w)))
2771	return;	2910	return;
2772		2911
2773	EV_FREQUENT_CHECK;	2912	EV_FREQUENT_CHECK;
2774		2913
2775	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2914	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2776	ev_stop (EV_A_ (W)w);	2915	ev_stop (EV_A_ (W)w);
2777		2916
2778	EV_FREQUENT_CHECK;	2917	EV_FREQUENT_CHECK;
2779	}	2918	}
		2919
		2920	#endif
2780		2921
2781	#if EV_STAT_ENABLE	2922	#if EV_STAT_ENABLE
2782		2923
2783	# ifdef _WIN32	2924	# ifdef _WIN32
2784	# undef lstat	2925	# undef lstat
…		…
2790	#define MIN_STAT_INTERVAL 0.1074891	2931	#define MIN_STAT_INTERVAL 0.1074891
2791		2932
2792	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2933	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2793		2934
2794	#if EV_USE_INOTIFY	2935	#if EV_USE_INOTIFY
2795	# define EV_INOTIFY_BUFSIZE 8192	2936
		2937	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2938	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2796		2939
2797	static void noinline	2940	static void noinline
2798	infy_add (EV_P_ ev_stat *w)	2941	infy_add (EV_P_ ev_stat *w)
2799	{	2942	{
2800	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);	2943	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);
2801		2944
2802	if (w->wd < 0)	2945	if (w->wd >= 0)
		2946	{
		2947	struct statfs sfs;
		2948
		2949	/* now local changes will be tracked by inotify, but remote changes won't */
		2950	/* unless the filesystem is known to be local, we therefore still poll */
		2951	/* also do poll on <2.6.25, but with normal frequency */
		2952
		2953	if (!fs_2625)
		2954	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2955	else if (!statfs (w->path, &sfs)
		2956	&& (sfs.f_type == 0x1373 /* devfs */
		2957	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2958	|| sfs.f_type == 0x3153464a /* jfs */
		2959	|| sfs.f_type == 0x52654973 /* reiser3 */
		2960	|| sfs.f_type == 0x01021994 /* tempfs */
		2961	|| sfs.f_type == 0x58465342 /* xfs */))
		2962	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2963	else
		2964	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2803	{	2965	}
		2966	else
		2967	{
		2968	/* can't use inotify, continue to stat */
2804	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2969	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2805	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2806		2970
2807	/* monitor some parent directory for speedup hints */	2971	/* if path is not there, monitor some parent directory for speedup hints */
2808	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2972	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2809	/* but an efficiency issue only */	2973	/* but an efficiency issue only */
2810	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2974	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2811	{	2975	{
2812	char path [4096];	2976	char path [4096];
…		…
2828	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2992	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2829	}	2993	}
2830	}	2994	}
2831		2995
2832	if (w->wd >= 0)	2996	if (w->wd >= 0)
2833	{
2834	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2997	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2835		2998
2836	/* now local changes will be tracked by inotify, but remote changes won't */	2999	/* now re-arm timer, if required */
2837	/* unless the filesystem it known to be local, we therefore still poll */	3000	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2838	/* also do poll on <2.6.25, but with normal frequency */
2839	struct statfs sfs;
2840
2841	if (fs_2625 && !statfs (w->path, &sfs))
2842	if (sfs.f_type == 0x1373 /* devfs */
2843	|| sfs.f_type == 0xEF53 /* ext2/3 */
2844	|| sfs.f_type == 0x3153464a /* jfs */
2845	|| sfs.f_type == 0x52654973 /* reiser3 */
2846	|| sfs.f_type == 0x01021994 /* tempfs */
2847	|| sfs.f_type == 0x58465342 /* xfs */)
2848	return;
2849
2850	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2851	ev_timer_again (EV_A_ &w->timer);	3001	ev_timer_again (EV_A_ &w->timer);
2852	}	3002	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2853	}	3003	}
2854		3004
2855	static void noinline	3005	static void noinline
2856	infy_del (EV_P_ ev_stat *w)	3006	infy_del (EV_P_ ev_stat *w)
2857	{	3007	{
…		…
2860		3010
2861	if (wd < 0)	3011	if (wd < 0)
2862	return;	3012	return;
2863		3013
2864	w->wd = -2;	3014	w->wd = -2;
2865	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3015	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2866	wlist_del (&fs_hash [slot].head, (WL)w);	3016	wlist_del (&fs_hash [slot].head, (WL)w);
2867		3017
2868	/* remove this watcher, if others are watching it, they will rearm */	3018	/* remove this watcher, if others are watching it, they will rearm */
2869	inotify_rm_watch (fs_fd, wd);	3019	inotify_rm_watch (fs_fd, wd);
2870	}	3020	}
…		…
2872	static void noinline	3022	static void noinline
2873	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3023	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2874	{	3024	{
2875	if (slot < 0)	3025	if (slot < 0)
2876	/* overflow, need to check for all hash slots */	3026	/* overflow, need to check for all hash slots */
2877	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3027	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2878	infy_wd (EV_A_ slot, wd, ev);	3028	infy_wd (EV_A_ slot, wd, ev);
2879	else	3029	else
2880	{	3030	{
2881	WL w_;	3031	WL w_;
2882		3032
2883	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3033	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2884	{	3034	{
2885	ev_stat *w = (ev_stat *)w_;	3035	ev_stat *w = (ev_stat *)w_;
2886	w_ = w_->next; /* lets us remove this watcher and all before it */	3036	w_ = w_->next; /* lets us remove this watcher and all before it */
2887		3037
2888	if (w->wd == wd || wd == -1)	3038	if (w->wd == wd || wd == -1)
2889	{	3039	{
2890	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3040	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2891	{	3041	{
2892	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3042	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2893	w->wd = -1;	3043	w->wd = -1;
2894	infy_add (EV_A_ w); /* re-add, no matter what */	3044	infy_add (EV_A_ w); /* re-add, no matter what */
2895	}	3045	}
2896		3046
2897	stat_timer_cb (EV_A_ &w->timer, 0);	3047	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2902		3052
2903	static void	3053	static void
2904	infy_cb (EV_P_ ev_io *w, int revents)	3054	infy_cb (EV_P_ ev_io *w, int revents)
2905	{	3055	{
2906	char buf [EV_INOTIFY_BUFSIZE];	3056	char buf [EV_INOTIFY_BUFSIZE];
2907	struct inotify_event *ev = (struct inotify_event *)buf;
2908	int ofs;	3057	int ofs;
2909	int len = read (fs_fd, buf, sizeof (buf));	3058	int len = read (fs_fd, buf, sizeof (buf));
2910		3059
2911	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3060	for (ofs = 0; ofs < len; )
		3061	{
		3062	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2912	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3063	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3064	ofs += sizeof (struct inotify_event) + ev->len;
		3065	}
		3066	}
		3067
		3068	inline_size unsigned int
		3069	ev_linux_version (void)
		3070	{
		3071	struct utsname buf;
		3072	unsigned int v;
		3073	int i;
		3074	char *p = buf.release;
		3075
		3076	if (uname (&buf))
		3077	return 0;
		3078
		3079	for (i = 3+1; --i; )
		3080	{
		3081	unsigned int c = 0;
		3082
		3083	for (;;)
		3084	{
		3085	if (*p >= '0' && *p <= '9')
		3086	c = c * 10 + *p++ - '0';
		3087	else
		3088	{
		3089	p += *p == '.';
		3090	break;
		3091	}
		3092	}
		3093
		3094	v = (v << 8) | c;
		3095	}
		3096
		3097	return v;
2913	}	3098	}
2914		3099
2915	inline_size void	3100	inline_size void
2916	check_2625 (EV_P)	3101	ev_check_2625 (EV_P)
2917	{	3102	{
2918	/* kernels < 2.6.25 are borked	3103	/* kernels < 2.6.25 are borked
2919	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3104	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2920	*/	3105	*/
2921	struct utsname buf;	3106	if (ev_linux_version () < 0x020619)
2922	int major, minor, micro;
2923
2924	if (uname (&buf))
2925	return;	3107	return;
2926		3108
2927	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2928	return;
2929
2930	if (major < 2
2931	|| (major == 2 && minor < 6)
2932	|| (major == 2 && minor == 6 && micro < 25))
2933	return;
2934
2935	fs_2625 = 1;	3109	fs_2625 = 1;
		3110	}
		3111
		3112	inline_size int
		3113	infy_newfd (void)
		3114	{
		3115	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3116	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3117	if (fd >= 0)
		3118	return fd;
		3119	#endif
		3120	return inotify_init ();
2936	}	3121	}
2937		3122
2938	inline_size void	3123	inline_size void
2939	infy_init (EV_P)	3124	infy_init (EV_P)
2940	{	3125	{
2941	if (fs_fd != -2)	3126	if (fs_fd != -2)
2942	return;	3127	return;
2943		3128
2944	fs_fd = -1;	3129	fs_fd = -1;
2945		3130
2946	check_2625 (EV_A);	3131	ev_check_2625 (EV_A);
2947		3132
2948	fs_fd = inotify_init ();	3133	fs_fd = infy_newfd ();
2949		3134
2950	if (fs_fd >= 0)	3135	if (fs_fd >= 0)
2951	{	3136	{
		3137	fd_intern (fs_fd);
2952	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3138	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2953	ev_set_priority (&fs_w, EV_MAXPRI);	3139	ev_set_priority (&fs_w, EV_MAXPRI);
2954	ev_io_start (EV_A_ &fs_w);	3140	ev_io_start (EV_A_ &fs_w);
		3141	ev_unref (EV_A);
2955	}	3142	}
2956	}	3143	}
2957		3144
2958	inline_size void	3145	inline_size void
2959	infy_fork (EV_P)	3146	infy_fork (EV_P)
…		…
2961	int slot;	3148	int slot;
2962		3149
2963	if (fs_fd < 0)	3150	if (fs_fd < 0)
2964	return;	3151	return;
2965		3152
		3153	ev_ref (EV_A);
		3154	ev_io_stop (EV_A_ &fs_w);
2966	close (fs_fd);	3155	close (fs_fd);
2967	fs_fd = inotify_init ();	3156	fs_fd = infy_newfd ();
2968		3157
		3158	if (fs_fd >= 0)
		3159	{
		3160	fd_intern (fs_fd);
		3161	ev_io_set (&fs_w, fs_fd, EV_READ);
		3162	ev_io_start (EV_A_ &fs_w);
		3163	ev_unref (EV_A);
		3164	}
		3165
2969	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3166	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2970	{	3167	{
2971	WL w_ = fs_hash [slot].head;	3168	WL w_ = fs_hash [slot].head;
2972	fs_hash [slot].head = 0;	3169	fs_hash [slot].head = 0;
2973		3170
2974	while (w_)	3171	while (w_)
…		…
2979	w->wd = -1;	3176	w->wd = -1;
2980		3177
2981	if (fs_fd >= 0)	3178	if (fs_fd >= 0)
2982	infy_add (EV_A_ w); /* re-add, no matter what */	3179	infy_add (EV_A_ w); /* re-add, no matter what */
2983	else	3180	else
		3181	{
		3182	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3183	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2984	ev_timer_again (EV_A_ &w->timer);	3184	ev_timer_again (EV_A_ &w->timer);
		3185	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3186	}
2985	}	3187	}
2986	}	3188	}
2987	}	3189	}
2988		3190
2989	#endif	3191	#endif
…		…
3006	static void noinline	3208	static void noinline
3007	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3209	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3008	{	3210	{
3009	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3211	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3010		3212
3011	/* we copy this here each the time so that */	3213	ev_statdata prev = w->attr;
3012	/* prev has the old value when the callback gets invoked */
3013	w->prev = w->attr;
3014	ev_stat_stat (EV_A_ w);	3214	ev_stat_stat (EV_A_ w);
3015		3215
3016	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3216	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3017	if (	3217	if (
3018	w->prev.st_dev != w->attr.st_dev	3218	prev.st_dev != w->attr.st_dev
3019	|| w->prev.st_ino != w->attr.st_ino	3219	|| prev.st_ino != w->attr.st_ino
3020	|| w->prev.st_mode != w->attr.st_mode	3220	|| prev.st_mode != w->attr.st_mode
3021	|| w->prev.st_nlink != w->attr.st_nlink	3221	|| prev.st_nlink != w->attr.st_nlink
3022	|| w->prev.st_uid != w->attr.st_uid	3222	|| prev.st_uid != w->attr.st_uid
3023	|| w->prev.st_gid != w->attr.st_gid	3223	|| prev.st_gid != w->attr.st_gid
3024	|| w->prev.st_rdev != w->attr.st_rdev	3224	|| prev.st_rdev != w->attr.st_rdev
3025	|| w->prev.st_size != w->attr.st_size	3225	|| prev.st_size != w->attr.st_size
3026	|| w->prev.st_atime != w->attr.st_atime	3226	|| prev.st_atime != w->attr.st_atime
3027	|| w->prev.st_mtime != w->attr.st_mtime	3227	|| prev.st_mtime != w->attr.st_mtime
3028	|| w->prev.st_ctime != w->attr.st_ctime	3228	|| prev.st_ctime != w->attr.st_ctime
3029	) {	3229	) {
		3230	/* we only update w->prev on actual differences */
		3231	/* in case we test more often than invoke the callback, */
		3232	/* to ensure that prev is always different to attr */
		3233	w->prev = prev;
		3234
3030	#if EV_USE_INOTIFY	3235	#if EV_USE_INOTIFY
3031	if (fs_fd >= 0)	3236	if (fs_fd >= 0)
3032	{	3237	{
3033	infy_del (EV_A_ w);	3238	infy_del (EV_A_ w);
3034	infy_add (EV_A_ w);	3239	infy_add (EV_A_ w);
…		…
3059		3264
3060	if (fs_fd >= 0)	3265	if (fs_fd >= 0)
3061	infy_add (EV_A_ w);	3266	infy_add (EV_A_ w);
3062	else	3267	else
3063	#endif	3268	#endif
		3269	{
3064	ev_timer_again (EV_A_ &w->timer);	3270	ev_timer_again (EV_A_ &w->timer);
		3271	ev_unref (EV_A);
		3272	}
3065		3273
3066	ev_start (EV_A_ (W)w, 1);	3274	ev_start (EV_A_ (W)w, 1);
3067		3275
3068	EV_FREQUENT_CHECK;	3276	EV_FREQUENT_CHECK;
3069	}	3277	}
…		…
3078	EV_FREQUENT_CHECK;	3286	EV_FREQUENT_CHECK;
3079		3287
3080	#if EV_USE_INOTIFY	3288	#if EV_USE_INOTIFY
3081	infy_del (EV_A_ w);	3289	infy_del (EV_A_ w);
3082	#endif	3290	#endif
		3291
		3292	if (ev_is_active (&w->timer))
		3293	{
		3294	ev_ref (EV_A);
3083	ev_timer_stop (EV_A_ &w->timer);	3295	ev_timer_stop (EV_A_ &w->timer);
		3296	}
3084		3297
3085	ev_stop (EV_A_ (W)w);	3298	ev_stop (EV_A_ (W)w);
3086		3299
3087	EV_FREQUENT_CHECK;	3300	EV_FREQUENT_CHECK;
3088	}	3301	}
…		…
3133		3346
3134	EV_FREQUENT_CHECK;	3347	EV_FREQUENT_CHECK;
3135	}	3348	}
3136	#endif	3349	#endif
3137		3350
		3351	#if EV_PREPARE_ENABLE
3138	void	3352	void
3139	ev_prepare_start (EV_P_ ev_prepare *w)	3353	ev_prepare_start (EV_P_ ev_prepare *w)
3140	{	3354	{
3141	if (expect_false (ev_is_active (w)))	3355	if (expect_false (ev_is_active (w)))
3142	return;	3356	return;
…		…
3168		3382
3169	ev_stop (EV_A_ (W)w);	3383	ev_stop (EV_A_ (W)w);
3170		3384
3171	EV_FREQUENT_CHECK;	3385	EV_FREQUENT_CHECK;
3172	}	3386	}
		3387	#endif
3173		3388
		3389	#if EV_CHECK_ENABLE
3174	void	3390	void
3175	ev_check_start (EV_P_ ev_check *w)	3391	ev_check_start (EV_P_ ev_check *w)
3176	{	3392	{
3177	if (expect_false (ev_is_active (w)))	3393	if (expect_false (ev_is_active (w)))
3178	return;	3394	return;
…		…
3204		3420
3205	ev_stop (EV_A_ (W)w);	3421	ev_stop (EV_A_ (W)w);
3206		3422
3207	EV_FREQUENT_CHECK;	3423	EV_FREQUENT_CHECK;
3208	}	3424	}
		3425	#endif
3209		3426
3210	#if EV_EMBED_ENABLE	3427	#if EV_EMBED_ENABLE
3211	void noinline	3428	void noinline
3212	ev_embed_sweep (EV_P_ ev_embed *w)	3429	ev_embed_sweep (EV_P_ ev_embed *w)
3213	{	3430	{
…		…
3229	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3446	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3230	{	3447	{
3231	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3448	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3232		3449
3233	{	3450	{
3234	struct ev_loop *loop = w->other;	3451	EV_P = w->other;
3235		3452
3236	while (fdchangecnt)	3453	while (fdchangecnt)
3237	{	3454	{
3238	fd_reify (EV_A);	3455	fd_reify (EV_A);
3239	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3456	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3247	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3464	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3248		3465
3249	ev_embed_stop (EV_A_ w);	3466	ev_embed_stop (EV_A_ w);
3250		3467
3251	{	3468	{
3252	struct ev_loop *loop = w->other;	3469	EV_P = w->other;
3253		3470
3254	ev_loop_fork (EV_A);	3471	ev_loop_fork (EV_A);
3255	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3472	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3256	}	3473	}
3257		3474
…		…
3271	{	3488	{
3272	if (expect_false (ev_is_active (w)))	3489	if (expect_false (ev_is_active (w)))
3273	return;	3490	return;
3274		3491
3275	{	3492	{
3276	struct ev_loop *loop = w->other;	3493	EV_P = w->other;
3277	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3494	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3278	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3495	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3279	}	3496	}
3280		3497
3281	EV_FREQUENT_CHECK;	3498	EV_FREQUENT_CHECK;
…		…
3308		3525
3309	ev_io_stop (EV_A_ &w->io);	3526	ev_io_stop (EV_A_ &w->io);
3310	ev_prepare_stop (EV_A_ &w->prepare);	3527	ev_prepare_stop (EV_A_ &w->prepare);
3311	ev_fork_stop (EV_A_ &w->fork);	3528	ev_fork_stop (EV_A_ &w->fork);
3312		3529
		3530	ev_stop (EV_A_ (W)w);
		3531
3313	EV_FREQUENT_CHECK;	3532	EV_FREQUENT_CHECK;
3314	}	3533	}
3315	#endif	3534	#endif
3316		3535
3317	#if EV_FORK_ENABLE	3536	#if EV_FORK_ENABLE
…		…
3393		3612
3394	void	3613	void
3395	ev_async_send (EV_P_ ev_async *w)	3614	ev_async_send (EV_P_ ev_async *w)
3396	{	3615	{
3397	w->sent = 1;	3616	w->sent = 1;
3398	evpipe_write (EV_A_ &gotasync);	3617	evpipe_write (EV_A_ &async_pending);
3399	}	3618	}
3400	#endif	3619	#endif
3401		3620
3402	/*****************************************************************************/	3621	/*****************************************************************************/
3403		3622
…		…
3443	{	3662	{
3444	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3663	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3445		3664
3446	if (expect_false (!once))	3665	if (expect_false (!once))
3447	{	3666	{
3448	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3667	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3449	return;	3668	return;
3450	}	3669	}
3451		3670
3452	once->cb = cb;	3671	once->cb = cb;
3453	once->arg = arg;	3672	once->arg = arg;
…		…
3540	if (types & EV_ASYNC)	3759	if (types & EV_ASYNC)
3541	for (i = asynccnt; i--; )	3760	for (i = asynccnt; i--; )
3542	cb (EV_A_ EV_ASYNC, asyncs [i]);	3761	cb (EV_A_ EV_ASYNC, asyncs [i]);
3543	#endif	3762	#endif
3544		3763
		3764	#if EV_PREPARE_ENABLE
3545	if (types & EV_PREPARE)	3765	if (types & EV_PREPARE)
3546	for (i = preparecnt; i--; )	3766	for (i = preparecnt; i--; )
3547	#if EV_EMBED_ENABLE	3767	# if EV_EMBED_ENABLE
3548	if (ev_cb (prepares [i]) != embed_prepare_cb)	3768	if (ev_cb (prepares [i]) != embed_prepare_cb)
3549	#endif	3769	# endif
3550	cb (EV_A_ EV_PREPARE, prepares [i]);	3770	cb (EV_A_ EV_PREPARE, prepares [i]);
		3771	#endif
3551		3772
		3773	#if EV_CHECK_ENABLE
3552	if (types & EV_CHECK)	3774	if (types & EV_CHECK)
3553	for (i = checkcnt; i--; )	3775	for (i = checkcnt; i--; )
3554	cb (EV_A_ EV_CHECK, checks [i]);	3776	cb (EV_A_ EV_CHECK, checks [i]);
		3777	#endif
3555		3778
		3779	#if EV_SIGNAL_ENABLE
3556	if (types & EV_SIGNAL)	3780	if (types & EV_SIGNAL)
3557	for (i = 0; i < signalmax; ++i)	3781	for (i = 0; i < EV_NSIG - 1; ++i)
3558	for (wl = signals [i].head; wl; )	3782	for (wl = signals [i].head; wl; )
3559	{	3783	{
3560	wn = wl->next;	3784	wn = wl->next;
3561	cb (EV_A_ EV_SIGNAL, wl);	3785	cb (EV_A_ EV_SIGNAL, wl);
3562	wl = wn;	3786	wl = wn;
3563	}	3787	}
		3788	#endif
3564		3789
		3790	#if EV_CHILD_ENABLE
3565	if (types & EV_CHILD)	3791	if (types & EV_CHILD)
3566	for (i = EV_PID_HASHSIZE; i--; )	3792	for (i = (EV_PID_HASHSIZE); i--; )
3567	for (wl = childs [i]; wl; )	3793	for (wl = childs [i]; wl; )
3568	{	3794	{
3569	wn = wl->next;	3795	wn = wl->next;
3570	cb (EV_A_ EV_CHILD, wl);	3796	cb (EV_A_ EV_CHILD, wl);
3571	wl = wn;	3797	wl = wn;
3572	}	3798	}
		3799	#endif
3573	/* EV_STAT 0x00001000 /* stat data changed */	3800	/* EV_STAT 0x00001000 /* stat data changed */
3574	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3801	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3575	}	3802	}
3576	#endif	3803	#endif
3577		3804

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