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Comparing libev/ev.c (file contents):
Revision 1.303 by root, Sun Jul 19 01:36:34 2009 UTC vs.
Revision 1.345 by sf-exg, Sat Jul 31 22:33:26 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
1178	write (evpipe [1], &old_errno, 1);	1286	write (evpipe [1], &dummy, 1);
1179		1287
1180	errno = old_errno;	1288	errno = old_errno;
1181	}	1289	}
1182	}	1290	}
1183		1291
1184	/* called whenever the libev signal pipe */	1292	/* called whenever the libev signal pipe */
1185	/* got some events (signal, async) */	1293	/* got some events (signal, async) */
1186	static void	1294	static void
1187	pipecb (EV_P_ ev_io *iow, int revents)	1295	pipecb (EV_P_ ev_io *iow, int revents)
1188	{	1296	{
		1297	int i;
		1298
1189	#if EV_USE_EVENTFD	1299	#if EV_USE_EVENTFD
1190	if (evfd >= 0)	1300	if (evfd >= 0)
1191	{	1301	{
1192	uint64_t counter;	1302	uint64_t counter;
1193	read (evfd, &counter, sizeof (uint64_t));	1303	read (evfd, &counter, sizeof (uint64_t));
…		…
1197	{	1307	{
1198	char dummy;	1308	char dummy;
1199	read (evpipe [0], &dummy, 1);	1309	read (evpipe [0], &dummy, 1);
1200	}	1310	}
1201		1311
1202	if (gotsig && ev_is_default_loop (EV_A))	1312	if (sig_pending)
1203	{	1313	{
1204	int signum;	1314	sig_pending = 0;
1205	gotsig = 0;
1206		1315
1207	for (signum = signalmax; signum--; )	1316	for (i = EV_NSIG - 1; i--; )
1208	if (signals [signum].gotsig)	1317	if (expect_false (signals [i].pending))
1209	ev_feed_signal_event (EV_A_ signum + 1);	1318	ev_feed_signal_event (EV_A_ i + 1);
1210	}	1319	}
1211		1320
1212	#if EV_ASYNC_ENABLE	1321	#if EV_ASYNC_ENABLE
1213	if (gotasync)	1322	if (async_pending)
1214	{	1323	{
1215	int i;	1324	async_pending = 0;
1216	gotasync = 0;
1217		1325
1218	for (i = asynccnt; i--; )	1326	for (i = asynccnt; i--; )
1219	if (asyncs [i]->sent)	1327	if (asyncs [i]->sent)
1220	{	1328	{
1221	asyncs [i]->sent = 0;	1329	asyncs [i]->sent = 0;
…		…
1229		1337
1230	static void	1338	static void
1231	ev_sighandler (int signum)	1339	ev_sighandler (int signum)
1232	{	1340	{
1233	#if EV_MULTIPLICITY	1341	#if EV_MULTIPLICITY
1234	struct ev_loop *loop = &default_loop_struct;	1342	EV_P = signals [signum - 1].loop;
1235	#endif	1343	#endif
1236		1344
1237	#if _WIN32	1345	#ifdef _WIN32
1238	signal (signum, ev_sighandler);	1346	signal (signum, ev_sighandler);
1239	#endif	1347	#endif
1240		1348
1241	signals [signum - 1].gotsig = 1;	1349	signals [signum - 1].pending = 1;
1242	evpipe_write (EV_A_ &gotsig);	1350	evpipe_write (EV_A_ &sig_pending);
1243	}	1351	}
1244		1352
1245	void noinline	1353	void noinline
1246	ev_feed_signal_event (EV_P_ int signum)	1354	ev_feed_signal_event (EV_P_ int signum)
1247	{	1355	{
1248	WL w;	1356	WL w;
1249		1357
		1358	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1359	return;
		1360
		1361	--signum;
		1362
1250	#if EV_MULTIPLICITY	1363	#if EV_MULTIPLICITY
1251	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1364	/* it is permissible to try to feed a signal to the wrong loop */
1252	#endif	1365	/* or, likely more useful, feeding a signal nobody is waiting for */
1253		1366
1254	--signum;	1367	if (expect_false (signals [signum].loop != EV_A))
1255
1256	if (signum < 0 || signum >= signalmax)
1257	return;	1368	return;
		1369	#endif
1258		1370
1259	signals [signum].gotsig = 0;	1371	signals [signum].pending = 0;
1260		1372
1261	for (w = signals [signum].head; w; w = w->next)	1373	for (w = signals [signum].head; w; w = w->next)
1262	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1374	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1263	}	1375	}
1264		1376
1265	#if EV_USE_SIGNALFD	1377	#if EV_USE_SIGNALFD
1266	static void	1378	static void
1267	sigfdcb (EV_P_ ev_io *iow, int revents)	1379	sigfdcb (EV_P_ ev_io *iow, int revents)
1268	{	1380	{
1269	struct signalfd_siginfo si[4], *sip;	1381	struct signalfd_siginfo si[2], *sip; /* these structs are big */
1270		1382
1271	for (;;)	1383	for (;;)
1272	{	1384	{
1273	ssize_t res = read (sigfd, si, sizeof (si));	1385	ssize_t res = read (sigfd, si, sizeof (si));
1274		1386
…		…
1280	break;	1392	break;
1281	}	1393	}
1282	}	1394	}
1283	#endif	1395	#endif
1284		1396
		1397	#endif
		1398
1285	/*****************************************************************************/	1399	/*****************************************************************************/
1286		1400
		1401	#if EV_CHILD_ENABLE
1287	static WL childs [EV_PID_HASHSIZE];	1402	static WL childs [EV_PID_HASHSIZE];
1288
1289	#ifndef _WIN32
1290		1403
1291	static ev_signal childev;	1404	static ev_signal childev;
1292		1405
1293	#ifndef WIFCONTINUED	1406	#ifndef WIFCONTINUED
1294	# define WIFCONTINUED(status) 0	1407	# define WIFCONTINUED(status) 0
…		…
1299	child_reap (EV_P_ int chain, int pid, int status)	1412	child_reap (EV_P_ int chain, int pid, int status)
1300	{	1413	{
1301	ev_child *w;	1414	ev_child *w;
1302	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1415	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1303		1416
1304	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1417	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1305	{	1418	{
1306	if ((w->pid == pid || !w->pid)	1419	if ((w->pid == pid || !w->pid)
1307	&& (!traced || (w->flags & 1)))	1420	&& (!traced || (w->flags & 1)))
1308	{	1421	{
1309	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1422	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 */	1447	/* 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 */	1448	/* 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);	1449	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1337		1450
1338	child_reap (EV_A_ pid, pid, status);	1451	child_reap (EV_A_ pid, pid, status);
1339	if (EV_PID_HASHSIZE > 1)	1452	if ((EV_PID_HASHSIZE) > 1)
1340	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1453	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1341	}	1454	}
1342		1455
1343	#endif	1456	#endif
1344		1457
…		…
1411	#ifdef __APPLE__	1524	#ifdef __APPLE__
1412	/* only select works correctly on that "unix-certified" platform */	1525	/* only select works correctly on that "unix-certified" platform */
1413	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1526	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1414	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1527	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1415	#endif	1528	#endif
		1529	#ifdef __FreeBSD__
		1530	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1531	#endif
1416		1532
1417	return flags;	1533	return flags;
1418	}	1534	}
1419		1535
1420	unsigned int	1536	unsigned int
…		…
1433	ev_backend (EV_P)	1549	ev_backend (EV_P)
1434	{	1550	{
1435	return backend;	1551	return backend;
1436	}	1552	}
1437		1553
1438	#if EV_MINIMAL < 2	1554	#if EV_FEATURE_API
1439	unsigned int	1555	unsigned int
1440	ev_loop_count (EV_P)	1556	ev_iteration (EV_P)
1441	{	1557	{
1442	return loop_count;	1558	return loop_count;
1443	}	1559	}
1444		1560
1445	unsigned int	1561	unsigned int
1446	ev_loop_depth (EV_P)	1562	ev_depth (EV_P)
1447	{	1563	{
1448	return loop_depth;	1564	return loop_depth;
1449	}	1565	}
1450		1566
1451	void	1567	void
…		…
1508	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1624	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1509	have_monotonic = 1;	1625	have_monotonic = 1;
1510	}	1626	}
1511	#endif	1627	#endif
1512		1628
		1629	/* pid check not overridable via env */
		1630	#ifndef _WIN32
		1631	if (flags & EVFLAG_FORKCHECK)
		1632	curpid = getpid ();
		1633	#endif
		1634
		1635	if (!(flags & EVFLAG_NOENV)
		1636	&& !enable_secure ()
		1637	&& getenv ("LIBEV_FLAGS"))
		1638	flags = atoi (getenv ("LIBEV_FLAGS"));
		1639
1513	ev_rt_now = ev_time ();	1640	ev_rt_now = ev_time ();
1514	mn_now = get_clock ();	1641	mn_now = get_clock ();
1515	now_floor = mn_now;	1642	now_floor = mn_now;
1516	rtmn_diff = ev_rt_now - mn_now;	1643	rtmn_diff = ev_rt_now - mn_now;
1517	#if EV_MINIMAL < 2	1644	#if EV_FEATURE_API
1518	invoke_cb = ev_invoke_pending;	1645	invoke_cb = ev_invoke_pending;
1519	#endif	1646	#endif
1520		1647
1521	io_blocktime = 0.;	1648	io_blocktime = 0.;
1522	timeout_blocktime = 0.;	1649	timeout_blocktime = 0.;
1523	backend = 0;	1650	backend = 0;
1524	backend_fd = -1;	1651	backend_fd = -1;
1525	gotasync = 0;	1652	sig_pending = 0;
		1653	#if EV_ASYNC_ENABLE
		1654	async_pending = 0;
		1655	#endif
1526	#if EV_USE_INOTIFY	1656	#if EV_USE_INOTIFY
1527	fs_fd = -2;	1657	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1528	#endif	1658	#endif
1529	#if EV_USE_SIGNALFD	1659	#if EV_USE_SIGNALFD
1530	sigfd = -2;	1660	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1531	#endif	1661	#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		1662
1544	if (!(flags & 0x0000ffffU))	1663	if (!(flags & 0x0000ffffU))
1545	flags |= ev_recommended_backends ();	1664	flags |= ev_recommended_backends ();
1546		1665
1547	#if EV_USE_PORT	1666	#if EV_USE_PORT
…		…
1560	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1679	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1561	#endif	1680	#endif
1562		1681
1563	ev_prepare_init (&pending_w, pendingcb);	1682	ev_prepare_init (&pending_w, pendingcb);
1564		1683
		1684	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1565	ev_init (&pipe_w, pipecb);	1685	ev_init (&pipe_w, pipecb);
1566	ev_set_priority (&pipe_w, EV_MAXPRI);	1686	ev_set_priority (&pipe_w, EV_MAXPRI);
		1687	#endif
1567	}	1688	}
1568	}	1689	}
1569		1690
1570	/* free up a loop structure */	1691	/* free up a loop structure */
1571	static void noinline	1692	static void noinline
…		…
1583	close (evfd);	1704	close (evfd);
1584	#endif	1705	#endif
1585		1706
1586	if (evpipe [0] >= 0)	1707	if (evpipe [0] >= 0)
1587	{	1708	{
1588	close (evpipe [0]);	1709	EV_WIN32_CLOSE_FD (evpipe [0]);
1589	close (evpipe [1]);	1710	EV_WIN32_CLOSE_FD (evpipe [1]);
1590	}	1711	}
1591	}	1712	}
1592		1713
1593	#if EV_USE_SIGNALFD	1714	#if EV_USE_SIGNALFD
1594	if (ev_is_active (&sigfd_w))	1715	if (ev_is_active (&sigfd_w))
1595	{
1596	/*ev_ref (EV_A);*/
1597	/*ev_io_stop (EV_A_ &sigfd_w);*/
1598
1599	close (sigfd);	1716	close (sigfd);
1600	}
1601	#endif	1717	#endif
1602		1718
1603	#if EV_USE_INOTIFY	1719	#if EV_USE_INOTIFY
1604	if (fs_fd >= 0)	1720	if (fs_fd >= 0)
1605	close (fs_fd);	1721	close (fs_fd);
…		…
1630	#if EV_IDLE_ENABLE	1746	#if EV_IDLE_ENABLE
1631	array_free (idle, [i]);	1747	array_free (idle, [i]);
1632	#endif	1748	#endif
1633	}	1749	}
1634		1750
1635	ev_free (anfds); anfdmax = 0;	1751	ev_free (anfds); anfds = 0; anfdmax = 0;
1636		1752
1637	/* have to use the microsoft-never-gets-it-right macro */	1753	/* have to use the microsoft-never-gets-it-right macro */
1638	array_free (rfeed, EMPTY);	1754	array_free (rfeed, EMPTY);
1639	array_free (fdchange, EMPTY);	1755	array_free (fdchange, EMPTY);
1640	array_free (timer, EMPTY);	1756	array_free (timer, EMPTY);
…		…
1675		1791
1676	if (ev_is_active (&pipe_w))	1792	if (ev_is_active (&pipe_w))
1677	{	1793	{
1678	/* this "locks" the handlers against writing to the pipe */	1794	/* this "locks" the handlers against writing to the pipe */
1679	/* while we modify the fd vars */	1795	/* while we modify the fd vars */
1680	gotsig = 1;	1796	sig_pending = 1;
1681	#if EV_ASYNC_ENABLE	1797	#if EV_ASYNC_ENABLE
1682	gotasync = 1;	1798	async_pending = 1;
1683	#endif	1799	#endif
1684		1800
1685	ev_ref (EV_A);	1801	ev_ref (EV_A);
1686	ev_io_stop (EV_A_ &pipe_w);	1802	ev_io_stop (EV_A_ &pipe_w);
1687		1803
…		…
1690	close (evfd);	1806	close (evfd);
1691	#endif	1807	#endif
1692		1808
1693	if (evpipe [0] >= 0)	1809	if (evpipe [0] >= 0)
1694	{	1810	{
1695	close (evpipe [0]);	1811	EV_WIN32_CLOSE_FD (evpipe [0]);
1696	close (evpipe [1]);	1812	EV_WIN32_CLOSE_FD (evpipe [1]);
1697	}	1813	}
1698		1814
		1815	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1699	evpipe_init (EV_A);	1816	evpipe_init (EV_A);
1700	/* now iterate over everything, in case we missed something */	1817	/* now iterate over everything, in case we missed something */
1701	pipecb (EV_A_ &pipe_w, EV_READ);	1818	pipecb (EV_A_ &pipe_w, EV_READ);
		1819	#endif
1702	}	1820	}
1703		1821
1704	postfork = 0;	1822	postfork = 0;
1705	}	1823	}
1706		1824
1707	#if EV_MULTIPLICITY	1825	#if EV_MULTIPLICITY
1708		1826
1709	struct ev_loop *	1827	struct ev_loop *
1710	ev_loop_new (unsigned int flags)	1828	ev_loop_new (unsigned int flags)
1711	{	1829	{
1712	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1830	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1713		1831
1714	memset (loop, 0, sizeof (struct ev_loop));	1832	memset (EV_A, 0, sizeof (struct ev_loop));
1715	loop_init (EV_A_ flags);	1833	loop_init (EV_A_ flags);
1716		1834
1717	if (ev_backend (EV_A))	1835	if (ev_backend (EV_A))
1718	return loop;	1836	return EV_A;
1719		1837
1720	return 0;	1838	return 0;
1721	}	1839	}
1722		1840
1723	void	1841	void
…		…
1768	verify_watcher (EV_A_ ws [cnt]);	1886	verify_watcher (EV_A_ ws [cnt]);
1769	}	1887	}
1770	}	1888	}
1771	#endif	1889	#endif
1772		1890
1773	#if EV_MINIMAL < 2	1891	#if EV_FEATURE_API
1774	void	1892	void
1775	ev_loop_verify (EV_P)	1893	ev_verify (EV_P)
1776	{	1894	{
1777	#if EV_VERIFY	1895	#if EV_VERIFY
1778	int i;	1896	int i;
1779	WL w;	1897	WL w;
1780		1898
…		…
1819	#if EV_ASYNC_ENABLE	1937	#if EV_ASYNC_ENABLE
1820	assert (asyncmax >= asynccnt);	1938	assert (asyncmax >= asynccnt);
1821	array_verify (EV_A_ (W *)asyncs, asynccnt);	1939	array_verify (EV_A_ (W *)asyncs, asynccnt);
1822	#endif	1940	#endif
1823		1941
		1942	#if EV_PREPARE_ENABLE
1824	assert (preparemax >= preparecnt);	1943	assert (preparemax >= preparecnt);
1825	array_verify (EV_A_ (W *)prepares, preparecnt);	1944	array_verify (EV_A_ (W *)prepares, preparecnt);
		1945	#endif
1826		1946
		1947	#if EV_CHECK_ENABLE
1827	assert (checkmax >= checkcnt);	1948	assert (checkmax >= checkcnt);
1828	array_verify (EV_A_ (W *)checks, checkcnt);	1949	array_verify (EV_A_ (W *)checks, checkcnt);
		1950	#endif
1829		1951
1830	# if 0	1952	# if 0
		1953	#if EV_CHILD_ENABLE
1831	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1954	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)	1955	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1956	#endif
1833	# endif	1957	# endif
1834	#endif	1958	#endif
1835	}	1959	}
1836	#endif	1960	#endif
1837		1961
…		…
1844	#endif	1968	#endif
1845	{	1969	{
1846	if (!ev_default_loop_ptr)	1970	if (!ev_default_loop_ptr)
1847	{	1971	{
1848	#if EV_MULTIPLICITY	1972	#if EV_MULTIPLICITY
1849	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1973	EV_P = ev_default_loop_ptr = &default_loop_struct;
1850	#else	1974	#else
1851	ev_default_loop_ptr = 1;	1975	ev_default_loop_ptr = 1;
1852	#endif	1976	#endif
1853		1977
1854	loop_init (EV_A_ flags);	1978	loop_init (EV_A_ flags);
1855		1979
1856	if (ev_backend (EV_A))	1980	if (ev_backend (EV_A))
1857	{	1981	{
1858	#ifndef _WIN32	1982	#if EV_CHILD_ENABLE
1859	ev_signal_init (&childev, childcb, SIGCHLD);	1983	ev_signal_init (&childev, childcb, SIGCHLD);
1860	ev_set_priority (&childev, EV_MAXPRI);	1984	ev_set_priority (&childev, EV_MAXPRI);
1861	ev_signal_start (EV_A_ &childev);	1985	ev_signal_start (EV_A_ &childev);
1862	ev_unref (EV_A); /* child watcher should not keep loop alive */	1986	ev_unref (EV_A); /* child watcher should not keep loop alive */
1863	#endif	1987	#endif
…		…
1871		1995
1872	void	1996	void
1873	ev_default_destroy (void)	1997	ev_default_destroy (void)
1874	{	1998	{
1875	#if EV_MULTIPLICITY	1999	#if EV_MULTIPLICITY
1876	struct ev_loop *loop = ev_default_loop_ptr;	2000	EV_P = ev_default_loop_ptr;
1877	#endif	2001	#endif
1878		2002
1879	ev_default_loop_ptr = 0;	2003	ev_default_loop_ptr = 0;
1880		2004
1881	#ifndef _WIN32	2005	#if EV_CHILD_ENABLE
1882	ev_ref (EV_A); /* child watcher */	2006	ev_ref (EV_A); /* child watcher */
1883	ev_signal_stop (EV_A_ &childev);	2007	ev_signal_stop (EV_A_ &childev);
1884	#endif	2008	#endif
1885		2009
1886	loop_destroy (EV_A);	2010	loop_destroy (EV_A);
…		…
1888		2012
1889	void	2013	void
1890	ev_default_fork (void)	2014	ev_default_fork (void)
1891	{	2015	{
1892	#if EV_MULTIPLICITY	2016	#if EV_MULTIPLICITY
1893	struct ev_loop *loop = ev_default_loop_ptr;	2017	EV_P = ev_default_loop_ptr;
1894	#endif	2018	#endif
1895		2019
1896	postfork = 1; /* must be in line with ev_loop_fork */	2020	postfork = 1; /* must be in line with ev_loop_fork */
1897	}	2021	}
1898		2022
…		…
1992	EV_FREQUENT_CHECK;	2116	EV_FREQUENT_CHECK;
1993	feed_reverse (EV_A_ (W)w);	2117	feed_reverse (EV_A_ (W)w);
1994	}	2118	}
1995	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2119	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1996		2120
1997	feed_reverse_done (EV_A_ EV_TIMEOUT);	2121	feed_reverse_done (EV_A_ EV_TIMER);
1998	}	2122	}
1999	}	2123	}
2000		2124
2001	#if EV_PERIODIC_ENABLE	2125	#if EV_PERIODIC_ENABLE
2002	/* make periodics pending */	2126	/* make periodics pending */
…		…
2055	feed_reverse_done (EV_A_ EV_PERIODIC);	2179	feed_reverse_done (EV_A_ EV_PERIODIC);
2056	}	2180	}
2057	}	2181	}
2058		2182
2059	/* simply recalculate all periodics */	2183	/* simply recalculate all periodics */
2060	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2184	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2061	static void noinline	2185	static void noinline
2062	periodics_reschedule (EV_P)	2186	periodics_reschedule (EV_P)
2063	{	2187	{
2064	int i;	2188	int i;
2065		2189
…		…
2093	ANHE_at_cache (*he);	2217	ANHE_at_cache (*he);
2094	}	2218	}
2095	}	2219	}
2096		2220
2097	/* fetch new monotonic and realtime times from the kernel */	2221	/* fetch new monotonic and realtime times from the kernel */
2098	/* also detetc if there was a timejump, and act accordingly */	2222	/* also detect if there was a timejump, and act accordingly */
2099	inline_speed void	2223	inline_speed void
2100	time_update (EV_P_ ev_tstamp max_block)	2224	time_update (EV_P_ ev_tstamp max_block)
2101	{	2225	{
2102	#if EV_USE_MONOTONIC	2226	#if EV_USE_MONOTONIC
2103	if (expect_true (have_monotonic))	2227	if (expect_true (have_monotonic))
…		…
2163	}	2287	}
2164		2288
2165	void	2289	void
2166	ev_loop (EV_P_ int flags)	2290	ev_loop (EV_P_ int flags)
2167	{	2291	{
2168	#if EV_MINIMAL < 2	2292	#if EV_FEATURE_API
2169	++loop_depth;	2293	++loop_depth;
2170	#endif	2294	#endif
2171		2295
2172	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2296	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2173		2297
…		…
2176	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2300	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2177		2301
2178	do	2302	do
2179	{	2303	{
2180	#if EV_VERIFY >= 2	2304	#if EV_VERIFY >= 2
2181	ev_loop_verify (EV_A);	2305	ev_verify (EV_A);
2182	#endif	2306	#endif
2183		2307
2184	#ifndef _WIN32	2308	#ifndef _WIN32
2185	if (expect_false (curpid)) /* penalise the forking check even more */	2309	if (expect_false (curpid)) /* penalise the forking check even more */
2186	if (expect_false (getpid () != curpid))	2310	if (expect_false (getpid () != curpid))
…		…
2198	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2322	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2199	EV_INVOKE_PENDING;	2323	EV_INVOKE_PENDING;
2200	}	2324	}
2201	#endif	2325	#endif
2202		2326
		2327	#if EV_PREPARE_ENABLE
2203	/* queue prepare watchers (and execute them) */	2328	/* queue prepare watchers (and execute them) */
2204	if (expect_false (preparecnt))	2329	if (expect_false (preparecnt))
2205	{	2330	{
2206	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2331	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2207	EV_INVOKE_PENDING;	2332	EV_INVOKE_PENDING;
2208	}	2333	}
		2334	#endif
2209		2335
2210	if (expect_false (loop_done))	2336	if (expect_false (loop_done))
2211	break;	2337	break;
2212		2338
2213	/* we might have forked, so reify kernel state if necessary */	2339	/* we might have forked, so reify kernel state if necessary */
…		…
2264	waittime -= sleeptime;	2390	waittime -= sleeptime;
2265	}	2391	}
2266	}	2392	}
2267	}	2393	}
2268		2394
2269	#if EV_MINIMAL < 2	2395	#if EV_FEATURE_API
2270	++loop_count;	2396	++loop_count;
2271	#endif	2397	#endif
2272	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2398	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2273	backend_poll (EV_A_ waittime);	2399	backend_poll (EV_A_ waittime);
2274	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2400	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
…		…
2286	#if EV_IDLE_ENABLE	2412	#if EV_IDLE_ENABLE
2287	/* queue idle watchers unless other events are pending */	2413	/* queue idle watchers unless other events are pending */
2288	idle_reify (EV_A);	2414	idle_reify (EV_A);
2289	#endif	2415	#endif
2290		2416
		2417	#if EV_CHECK_ENABLE
2291	/* queue check watchers, to be executed first */	2418	/* queue check watchers, to be executed first */
2292	if (expect_false (checkcnt))	2419	if (expect_false (checkcnt))
2293	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2420	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2421	#endif
2294		2422
2295	EV_INVOKE_PENDING;	2423	EV_INVOKE_PENDING;
2296	}	2424	}
2297	while (expect_true (	2425	while (expect_true (
2298	activecnt	2426	activecnt
…		…
2301	));	2429	));
2302		2430
2303	if (loop_done == EVUNLOOP_ONE)	2431	if (loop_done == EVUNLOOP_ONE)
2304	loop_done = EVUNLOOP_CANCEL;	2432	loop_done = EVUNLOOP_CANCEL;
2305		2433
2306	#if EV_MINIMAL < 2	2434	#if EV_FEATURE_API
2307	--loop_depth;	2435	--loop_depth;
2308	#endif	2436	#endif
2309	}	2437	}
2310		2438
2311	void	2439	void
…		…
2364	inline_size void	2492	inline_size void
2365	wlist_del (WL *head, WL elem)	2493	wlist_del (WL *head, WL elem)
2366	{	2494	{
2367	while (*head)	2495	while (*head)
2368	{	2496	{
2369	if (*head == elem)	2497	if (expect_true (*head == elem))
2370	{	2498	{
2371	*head = elem->next;	2499	*head = elem->next;
2372	return;	2500	break;
2373	}	2501	}
2374		2502
2375	head = &(*head)->next;	2503	head = &(*head)->next;
2376	}	2504	}
2377	}	2505	}
…		…
2437		2565
2438	if (expect_false (ev_is_active (w)))	2566	if (expect_false (ev_is_active (w)))
2439	return;	2567	return;
2440		2568
2441	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2569	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))));	2570	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2443		2571
2444	EV_FREQUENT_CHECK;	2572	EV_FREQUENT_CHECK;
2445		2573
2446	ev_start (EV_A_ (W)w, 1);	2574	ev_start (EV_A_ (W)w, 1);
2447	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2575	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2517	timers [active] = timers [timercnt + HEAP0];	2645	timers [active] = timers [timercnt + HEAP0];
2518	adjustheap (timers, timercnt, active);	2646	adjustheap (timers, timercnt, active);
2519	}	2647	}
2520	}	2648	}
2521		2649
2522	EV_FREQUENT_CHECK;
2523
2524	ev_at (w) -= mn_now;	2650	ev_at (w) -= mn_now;
2525		2651
2526	ev_stop (EV_A_ (W)w);	2652	ev_stop (EV_A_ (W)w);
		2653
		2654	EV_FREQUENT_CHECK;
2527	}	2655	}
2528		2656
2529	void noinline	2657	void noinline
2530	ev_timer_again (EV_P_ ev_timer *w)	2658	ev_timer_again (EV_P_ ev_timer *w)
2531	{	2659	{
…		…
2610	periodics [active] = periodics [periodiccnt + HEAP0];	2738	periodics [active] = periodics [periodiccnt + HEAP0];
2611	adjustheap (periodics, periodiccnt, active);	2739	adjustheap (periodics, periodiccnt, active);
2612	}	2740	}
2613	}	2741	}
2614		2742
2615	EV_FREQUENT_CHECK;
2616
2617	ev_stop (EV_A_ (W)w);	2743	ev_stop (EV_A_ (W)w);
		2744
		2745	EV_FREQUENT_CHECK;
2618	}	2746	}
2619		2747
2620	void noinline	2748	void noinline
2621	ev_periodic_again (EV_P_ ev_periodic *w)	2749	ev_periodic_again (EV_P_ ev_periodic *w)
2622	{	2750	{
…		…
2628		2756
2629	#ifndef SA_RESTART	2757	#ifndef SA_RESTART
2630	# define SA_RESTART 0	2758	# define SA_RESTART 0
2631	#endif	2759	#endif
2632		2760
		2761	#if EV_SIGNAL_ENABLE
		2762
2633	void noinline	2763	void noinline
2634	ev_signal_start (EV_P_ ev_signal *w)	2764	ev_signal_start (EV_P_ ev_signal *w)
2635	{	2765	{
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)))	2766	if (expect_false (ev_is_active (w)))
2640	return;	2767	return;
2641		2768
2642	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2769	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		2770
		2771	#if EV_MULTIPLICITY
		2772	assert (("libev: a signal must not be attached to two different loops",
		2773	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
		2774
		2775	signals [w->signum - 1].loop = EV_A;
		2776	#endif
2643		2777
2644	EV_FREQUENT_CHECK;	2778	EV_FREQUENT_CHECK;
2645		2779
2646	#if EV_USE_SIGNALFD	2780	#if EV_USE_SIGNALFD
2647	if (sigfd == -2)	2781	if (sigfd == -2)
…		…
2669	sigaddset (&sigfd_set, w->signum);	2803	sigaddset (&sigfd_set, w->signum);
2670	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2804	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2671		2805
2672	signalfd (sigfd, &sigfd_set, 0);	2806	signalfd (sigfd, &sigfd_set, 0);
2673	}	2807	}
2674	else
2675	#endif	2808	#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 (sigfd < 0)/*TODO*/
2689	sigdelset (&prev, w->signum);
2690	sigprocmask (SIG_SETMASK, &prev, 0);
2691	#endif
2692	}
2693		2809
2694	ev_start (EV_A_ (W)w, 1);	2810	ev_start (EV_A_ (W)w, 1);
2695	wlist_add (&signals [w->signum - 1].head, (WL)w);	2811	wlist_add (&signals [w->signum - 1].head, (WL)w);
2696		2812
2697	if (!((WL)w)->next)	2813	if (!((WL)w)->next)
		2814	# if EV_USE_SIGNALFD
		2815	if (sigfd < 0) /*TODO*/
		2816	# endif
2698	{	2817	{
2699	#if _WIN32	2818	# ifdef _WIN32
		2819	evpipe_init (EV_A);
		2820
2700	signal (w->signum, ev_sighandler);	2821	signal (w->signum, ev_sighandler);
2701	#else	2822	# else
2702	if (sigfd < 0) /*TODO*/
2703	{
2704	struct sigaction sa = { };	2823	struct sigaction sa;
		2824
		2825	evpipe_init (EV_A);
		2826
2705	sa.sa_handler = ev_sighandler;	2827	sa.sa_handler = ev_sighandler;
2706	sigfillset (&sa.sa_mask);	2828	sigfillset (&sa.sa_mask);
2707	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2829	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2708	sigaction (w->signum, &sa, 0);	2830	sigaction (w->signum, &sa, 0);
		2831
		2832	sigemptyset (&sa.sa_mask);
		2833	sigaddset (&sa.sa_mask, w->signum);
		2834	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2835	#endif
2709	}	2836	}
2710	#endif
2711	}
2712		2837
2713	EV_FREQUENT_CHECK;	2838	EV_FREQUENT_CHECK;
2714	}	2839	}
2715		2840
2716	void noinline	2841	void noinline
…		…
2724		2849
2725	wlist_del (&signals [w->signum - 1].head, (WL)w);	2850	wlist_del (&signals [w->signum - 1].head, (WL)w);
2726	ev_stop (EV_A_ (W)w);	2851	ev_stop (EV_A_ (W)w);
2727		2852
2728	if (!signals [w->signum - 1].head)	2853	if (!signals [w->signum - 1].head)
		2854	{
		2855	#if EV_MULTIPLICITY
		2856	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2857	#endif
2729	#if EV_USE_SIGNALFD	2858	#if EV_USE_SIGNALFD
2730	if (sigfd >= 0)	2859	if (sigfd >= 0)
2731	{	2860	{
2732	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2861	sigset_t ss;
		2862
		2863	sigemptyset (&ss);
		2864	sigaddset (&ss, w->signum);
2733	sigdelset (&sigfd_set, w->signum);	2865	sigdelset (&sigfd_set, w->signum);
		2866
2734	signalfd (sigfd, &sigfd_set, 0);	2867	signalfd (sigfd, &sigfd_set, 0);
2735	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2868	sigprocmask (SIG_UNBLOCK, &ss, 0);
2736	/*TODO: maybe unblock signal? */
2737	}	2869	}
2738	else	2870	else
2739	#endif	2871	#endif
2740	signal (w->signum, SIG_DFL);	2872	signal (w->signum, SIG_DFL);
		2873	}
2741		2874
2742	EV_FREQUENT_CHECK;	2875	EV_FREQUENT_CHECK;
2743	}	2876	}
		2877
		2878	#endif
		2879
		2880	#if EV_CHILD_ENABLE
2744		2881
2745	void	2882	void
2746	ev_child_start (EV_P_ ev_child *w)	2883	ev_child_start (EV_P_ ev_child *w)
2747	{	2884	{
2748	#if EV_MULTIPLICITY	2885	#if EV_MULTIPLICITY
…		…
2752	return;	2889	return;
2753		2890
2754	EV_FREQUENT_CHECK;	2891	EV_FREQUENT_CHECK;
2755		2892
2756	ev_start (EV_A_ (W)w, 1);	2893	ev_start (EV_A_ (W)w, 1);
2757	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2894	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2758		2895
2759	EV_FREQUENT_CHECK;	2896	EV_FREQUENT_CHECK;
2760	}	2897	}
2761		2898
2762	void	2899	void
…		…
2766	if (expect_false (!ev_is_active (w)))	2903	if (expect_false (!ev_is_active (w)))
2767	return;	2904	return;
2768		2905
2769	EV_FREQUENT_CHECK;	2906	EV_FREQUENT_CHECK;
2770		2907
2771	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2908	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2772	ev_stop (EV_A_ (W)w);	2909	ev_stop (EV_A_ (W)w);
2773		2910
2774	EV_FREQUENT_CHECK;	2911	EV_FREQUENT_CHECK;
2775	}	2912	}
		2913
		2914	#endif
2776		2915
2777	#if EV_STAT_ENABLE	2916	#if EV_STAT_ENABLE
2778		2917
2779	# ifdef _WIN32	2918	# ifdef _WIN32
2780	# undef lstat	2919	# undef lstat
…		…
2786	#define MIN_STAT_INTERVAL 0.1074891	2925	#define MIN_STAT_INTERVAL 0.1074891
2787		2926
2788	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2927	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2789		2928
2790	#if EV_USE_INOTIFY	2929	#if EV_USE_INOTIFY
2791	# define EV_INOTIFY_BUFSIZE 8192	2930
		2931	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2932	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2792		2933
2793	static void noinline	2934	static void noinline
2794	infy_add (EV_P_ ev_stat *w)	2935	infy_add (EV_P_ ev_stat *w)
2795	{	2936	{
2796	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);	2937	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);
2797		2938
2798	if (w->wd < 0)	2939	if (w->wd >= 0)
		2940	{
		2941	struct statfs sfs;
		2942
		2943	/* now local changes will be tracked by inotify, but remote changes won't */
		2944	/* unless the filesystem is known to be local, we therefore still poll */
		2945	/* also do poll on <2.6.25, but with normal frequency */
		2946
		2947	if (!fs_2625)
		2948	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2949	else if (!statfs (w->path, &sfs)
		2950	&& (sfs.f_type == 0x1373 /* devfs */
		2951	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2952	|| sfs.f_type == 0x3153464a /* jfs */
		2953	|| sfs.f_type == 0x52654973 /* reiser3 */
		2954	|| sfs.f_type == 0x01021994 /* tempfs */
		2955	|| sfs.f_type == 0x58465342 /* xfs */))
		2956	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2957	else
		2958	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2799	{	2959	}
		2960	else
		2961	{
		2962	/* can't use inotify, continue to stat */
2800	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2963	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2801	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2802		2964
2803	/* monitor some parent directory for speedup hints */	2965	/* if path is not there, monitor some parent directory for speedup hints */
2804	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2966	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2805	/* but an efficiency issue only */	2967	/* but an efficiency issue only */
2806	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2968	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2807	{	2969	{
2808	char path [4096];	2970	char path [4096];
…		…
2824	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2986	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2825	}	2987	}
2826	}	2988	}
2827		2989
2828	if (w->wd >= 0)	2990	if (w->wd >= 0)
2829	{
2830	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2991	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2831		2992
2832	/* now local changes will be tracked by inotify, but remote changes won't */	2993	/* now re-arm timer, if required */
2833	/* unless the filesystem it known to be local, we therefore still poll */	2994	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2834	/* also do poll on <2.6.25, but with normal frequency */
2835	struct statfs sfs;
2836
2837	if (fs_2625 && !statfs (w->path, &sfs))
2838	if (sfs.f_type == 0x1373 /* devfs */
2839	|| sfs.f_type == 0xEF53 /* ext2/3 */
2840	|| sfs.f_type == 0x3153464a /* jfs */
2841	|| sfs.f_type == 0x52654973 /* reiser3 */
2842	|| sfs.f_type == 0x01021994 /* tempfs */
2843	|| sfs.f_type == 0x58465342 /* xfs */)
2844	return;
2845
2846	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2847	ev_timer_again (EV_A_ &w->timer);	2995	ev_timer_again (EV_A_ &w->timer);
2848	}	2996	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2849	}	2997	}
2850		2998
2851	static void noinline	2999	static void noinline
2852	infy_del (EV_P_ ev_stat *w)	3000	infy_del (EV_P_ ev_stat *w)
2853	{	3001	{
…		…
2856		3004
2857	if (wd < 0)	3005	if (wd < 0)
2858	return;	3006	return;
2859		3007
2860	w->wd = -2;	3008	w->wd = -2;
2861	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3009	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2862	wlist_del (&fs_hash [slot].head, (WL)w);	3010	wlist_del (&fs_hash [slot].head, (WL)w);
2863		3011
2864	/* remove this watcher, if others are watching it, they will rearm */	3012	/* remove this watcher, if others are watching it, they will rearm */
2865	inotify_rm_watch (fs_fd, wd);	3013	inotify_rm_watch (fs_fd, wd);
2866	}	3014	}
…		…
2868	static void noinline	3016	static void noinline
2869	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3017	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2870	{	3018	{
2871	if (slot < 0)	3019	if (slot < 0)
2872	/* overflow, need to check for all hash slots */	3020	/* overflow, need to check for all hash slots */
2873	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3021	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2874	infy_wd (EV_A_ slot, wd, ev);	3022	infy_wd (EV_A_ slot, wd, ev);
2875	else	3023	else
2876	{	3024	{
2877	WL w_;	3025	WL w_;
2878		3026
2879	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3027	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2880	{	3028	{
2881	ev_stat *w = (ev_stat *)w_;	3029	ev_stat *w = (ev_stat *)w_;
2882	w_ = w_->next; /* lets us remove this watcher and all before it */	3030	w_ = w_->next; /* lets us remove this watcher and all before it */
2883		3031
2884	if (w->wd == wd || wd == -1)	3032	if (w->wd == wd || wd == -1)
2885	{	3033	{
2886	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3034	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2887	{	3035	{
2888	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3036	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2889	w->wd = -1;	3037	w->wd = -1;
2890	infy_add (EV_A_ w); /* re-add, no matter what */	3038	infy_add (EV_A_ w); /* re-add, no matter what */
2891	}	3039	}
2892		3040
2893	stat_timer_cb (EV_A_ &w->timer, 0);	3041	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2898		3046
2899	static void	3047	static void
2900	infy_cb (EV_P_ ev_io *w, int revents)	3048	infy_cb (EV_P_ ev_io *w, int revents)
2901	{	3049	{
2902	char buf [EV_INOTIFY_BUFSIZE];	3050	char buf [EV_INOTIFY_BUFSIZE];
2903	struct inotify_event *ev = (struct inotify_event *)buf;
2904	int ofs;	3051	int ofs;
2905	int len = read (fs_fd, buf, sizeof (buf));	3052	int len = read (fs_fd, buf, sizeof (buf));
2906		3053
2907	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3054	for (ofs = 0; ofs < len; )
		3055	{
		3056	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2908	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3057	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3058	ofs += sizeof (struct inotify_event) + ev->len;
		3059	}
		3060	}
		3061
		3062	inline_size unsigned int
		3063	ev_linux_version (void)
		3064	{
		3065	struct utsname buf;
		3066	unsigned int v;
		3067	int i;
		3068	char *p = buf.release;
		3069
		3070	if (uname (&buf))
		3071	return 0;
		3072
		3073	for (i = 3+1; --i; )
		3074	{
		3075	unsigned int c = 0;
		3076
		3077	for (;;)
		3078	{
		3079	if (*p >= '0' && *p <= '9')
		3080	c = c * 10 + *p++ - '0';
		3081	else
		3082	{
		3083	p += *p == '.';
		3084	break;
		3085	}
		3086	}
		3087
		3088	v = (v << 8) | c;
		3089	}
		3090
		3091	return v;
2909	}	3092	}
2910		3093
2911	inline_size void	3094	inline_size void
2912	check_2625 (EV_P)	3095	ev_check_2625 (EV_P)
2913	{	3096	{
2914	/* kernels < 2.6.25 are borked	3097	/* kernels < 2.6.25 are borked
2915	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3098	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2916	*/	3099	*/
2917	struct utsname buf;	3100	if (ev_linux_version () < 0x020619)
2918	int major, minor, micro;
2919
2920	if (uname (&buf))
2921	return;	3101	return;
2922		3102
2923	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2924	return;
2925
2926	if (major < 2
2927	|| (major == 2 && minor < 6)
2928	|| (major == 2 && minor == 6 && micro < 25))
2929	return;
2930
2931	fs_2625 = 1;	3103	fs_2625 = 1;
		3104	}
		3105
		3106	inline_size int
		3107	infy_newfd (void)
		3108	{
		3109	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3110	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3111	if (fd >= 0)
		3112	return fd;
		3113	#endif
		3114	return inotify_init ();
2932	}	3115	}
2933		3116
2934	inline_size void	3117	inline_size void
2935	infy_init (EV_P)	3118	infy_init (EV_P)
2936	{	3119	{
2937	if (fs_fd != -2)	3120	if (fs_fd != -2)
2938	return;	3121	return;
2939		3122
2940	fs_fd = -1;	3123	fs_fd = -1;
2941		3124
2942	check_2625 (EV_A);	3125	ev_check_2625 (EV_A);
2943		3126
2944	fs_fd = inotify_init ();	3127	fs_fd = infy_newfd ();
2945		3128
2946	if (fs_fd >= 0)	3129	if (fs_fd >= 0)
2947	{	3130	{
		3131	fd_intern (fs_fd);
2948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3132	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2949	ev_set_priority (&fs_w, EV_MAXPRI);	3133	ev_set_priority (&fs_w, EV_MAXPRI);
2950	ev_io_start (EV_A_ &fs_w);	3134	ev_io_start (EV_A_ &fs_w);
		3135	ev_unref (EV_A);
2951	}	3136	}
2952	}	3137	}
2953		3138
2954	inline_size void	3139	inline_size void
2955	infy_fork (EV_P)	3140	infy_fork (EV_P)
…		…
2957	int slot;	3142	int slot;
2958		3143
2959	if (fs_fd < 0)	3144	if (fs_fd < 0)
2960	return;	3145	return;
2961		3146
		3147	ev_ref (EV_A);
		3148	ev_io_stop (EV_A_ &fs_w);
2962	close (fs_fd);	3149	close (fs_fd);
2963	fs_fd = inotify_init ();	3150	fs_fd = infy_newfd ();
2964		3151
		3152	if (fs_fd >= 0)
		3153	{
		3154	fd_intern (fs_fd);
		3155	ev_io_set (&fs_w, fs_fd, EV_READ);
		3156	ev_io_start (EV_A_ &fs_w);
		3157	ev_unref (EV_A);
		3158	}
		3159
2965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3160	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2966	{	3161	{
2967	WL w_ = fs_hash [slot].head;	3162	WL w_ = fs_hash [slot].head;
2968	fs_hash [slot].head = 0;	3163	fs_hash [slot].head = 0;
2969		3164
2970	while (w_)	3165	while (w_)
…		…
2975	w->wd = -1;	3170	w->wd = -1;
2976		3171
2977	if (fs_fd >= 0)	3172	if (fs_fd >= 0)
2978	infy_add (EV_A_ w); /* re-add, no matter what */	3173	infy_add (EV_A_ w); /* re-add, no matter what */
2979	else	3174	else
		3175	{
		3176	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3177	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2980	ev_timer_again (EV_A_ &w->timer);	3178	ev_timer_again (EV_A_ &w->timer);
		3179	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3180	}
2981	}	3181	}
2982	}	3182	}
2983	}	3183	}
2984		3184
2985	#endif	3185	#endif
…		…
3002	static void noinline	3202	static void noinline
3003	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3203	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3004	{	3204	{
3005	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3205	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3006		3206
3007	/* we copy this here each the time so that */	3207	ev_statdata prev = w->attr;
3008	/* prev has the old value when the callback gets invoked */
3009	w->prev = w->attr;
3010	ev_stat_stat (EV_A_ w);	3208	ev_stat_stat (EV_A_ w);
3011		3209
3012	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3210	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3013	if (	3211	if (
3014	w->prev.st_dev != w->attr.st_dev	3212	prev.st_dev != w->attr.st_dev
3015	|| w->prev.st_ino != w->attr.st_ino	3213	|| prev.st_ino != w->attr.st_ino
3016	|| w->prev.st_mode != w->attr.st_mode	3214	|| prev.st_mode != w->attr.st_mode
3017	|| w->prev.st_nlink != w->attr.st_nlink	3215	|| prev.st_nlink != w->attr.st_nlink
3018	|| w->prev.st_uid != w->attr.st_uid	3216	|| prev.st_uid != w->attr.st_uid
3019	|| w->prev.st_gid != w->attr.st_gid	3217	|| prev.st_gid != w->attr.st_gid
3020	|| w->prev.st_rdev != w->attr.st_rdev	3218	|| prev.st_rdev != w->attr.st_rdev
3021	|| w->prev.st_size != w->attr.st_size	3219	|| prev.st_size != w->attr.st_size
3022	|| w->prev.st_atime != w->attr.st_atime	3220	|| prev.st_atime != w->attr.st_atime
3023	|| w->prev.st_mtime != w->attr.st_mtime	3221	|| prev.st_mtime != w->attr.st_mtime
3024	|| w->prev.st_ctime != w->attr.st_ctime	3222	|| prev.st_ctime != w->attr.st_ctime
3025	) {	3223	) {
		3224	/* we only update w->prev on actual differences */
		3225	/* in case we test more often than invoke the callback, */
		3226	/* to ensure that prev is always different to attr */
		3227	w->prev = prev;
		3228
3026	#if EV_USE_INOTIFY	3229	#if EV_USE_INOTIFY
3027	if (fs_fd >= 0)	3230	if (fs_fd >= 0)
3028	{	3231	{
3029	infy_del (EV_A_ w);	3232	infy_del (EV_A_ w);
3030	infy_add (EV_A_ w);	3233	infy_add (EV_A_ w);
…		…
3055		3258
3056	if (fs_fd >= 0)	3259	if (fs_fd >= 0)
3057	infy_add (EV_A_ w);	3260	infy_add (EV_A_ w);
3058	else	3261	else
3059	#endif	3262	#endif
		3263	{
3060	ev_timer_again (EV_A_ &w->timer);	3264	ev_timer_again (EV_A_ &w->timer);
		3265	ev_unref (EV_A);
		3266	}
3061		3267
3062	ev_start (EV_A_ (W)w, 1);	3268	ev_start (EV_A_ (W)w, 1);
3063		3269
3064	EV_FREQUENT_CHECK;	3270	EV_FREQUENT_CHECK;
3065	}	3271	}
…		…
3074	EV_FREQUENT_CHECK;	3280	EV_FREQUENT_CHECK;
3075		3281
3076	#if EV_USE_INOTIFY	3282	#if EV_USE_INOTIFY
3077	infy_del (EV_A_ w);	3283	infy_del (EV_A_ w);
3078	#endif	3284	#endif
		3285
		3286	if (ev_is_active (&w->timer))
		3287	{
		3288	ev_ref (EV_A);
3079	ev_timer_stop (EV_A_ &w->timer);	3289	ev_timer_stop (EV_A_ &w->timer);
		3290	}
3080		3291
3081	ev_stop (EV_A_ (W)w);	3292	ev_stop (EV_A_ (W)w);
3082		3293
3083	EV_FREQUENT_CHECK;	3294	EV_FREQUENT_CHECK;
3084	}	3295	}
…		…
3129		3340
3130	EV_FREQUENT_CHECK;	3341	EV_FREQUENT_CHECK;
3131	}	3342	}
3132	#endif	3343	#endif
3133		3344
		3345	#if EV_PREPARE_ENABLE
3134	void	3346	void
3135	ev_prepare_start (EV_P_ ev_prepare *w)	3347	ev_prepare_start (EV_P_ ev_prepare *w)
3136	{	3348	{
3137	if (expect_false (ev_is_active (w)))	3349	if (expect_false (ev_is_active (w)))
3138	return;	3350	return;
…		…
3164		3376
3165	ev_stop (EV_A_ (W)w);	3377	ev_stop (EV_A_ (W)w);
3166		3378
3167	EV_FREQUENT_CHECK;	3379	EV_FREQUENT_CHECK;
3168	}	3380	}
		3381	#endif
3169		3382
		3383	#if EV_CHECK_ENABLE
3170	void	3384	void
3171	ev_check_start (EV_P_ ev_check *w)	3385	ev_check_start (EV_P_ ev_check *w)
3172	{	3386	{
3173	if (expect_false (ev_is_active (w)))	3387	if (expect_false (ev_is_active (w)))
3174	return;	3388	return;
…		…
3200		3414
3201	ev_stop (EV_A_ (W)w);	3415	ev_stop (EV_A_ (W)w);
3202		3416
3203	EV_FREQUENT_CHECK;	3417	EV_FREQUENT_CHECK;
3204	}	3418	}
		3419	#endif
3205		3420
3206	#if EV_EMBED_ENABLE	3421	#if EV_EMBED_ENABLE
3207	void noinline	3422	void noinline
3208	ev_embed_sweep (EV_P_ ev_embed *w)	3423	ev_embed_sweep (EV_P_ ev_embed *w)
3209	{	3424	{
…		…
3225	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3440	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3226	{	3441	{
3227	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3442	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3228		3443
3229	{	3444	{
3230	struct ev_loop *loop = w->other;	3445	EV_P = w->other;
3231		3446
3232	while (fdchangecnt)	3447	while (fdchangecnt)
3233	{	3448	{
3234	fd_reify (EV_A);	3449	fd_reify (EV_A);
3235	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3450	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3243	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3458	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3244		3459
3245	ev_embed_stop (EV_A_ w);	3460	ev_embed_stop (EV_A_ w);
3246		3461
3247	{	3462	{
3248	struct ev_loop *loop = w->other;	3463	EV_P = w->other;
3249		3464
3250	ev_loop_fork (EV_A);	3465	ev_loop_fork (EV_A);
3251	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3466	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3252	}	3467	}
3253		3468
…		…
3267	{	3482	{
3268	if (expect_false (ev_is_active (w)))	3483	if (expect_false (ev_is_active (w)))
3269	return;	3484	return;
3270		3485
3271	{	3486	{
3272	struct ev_loop *loop = w->other;	3487	EV_P = w->other;
3273	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3488	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3274	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3489	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3275	}	3490	}
3276		3491
3277	EV_FREQUENT_CHECK;	3492	EV_FREQUENT_CHECK;
…		…
3304		3519
3305	ev_io_stop (EV_A_ &w->io);	3520	ev_io_stop (EV_A_ &w->io);
3306	ev_prepare_stop (EV_A_ &w->prepare);	3521	ev_prepare_stop (EV_A_ &w->prepare);
3307	ev_fork_stop (EV_A_ &w->fork);	3522	ev_fork_stop (EV_A_ &w->fork);
3308		3523
		3524	ev_stop (EV_A_ (W)w);
		3525
3309	EV_FREQUENT_CHECK;	3526	EV_FREQUENT_CHECK;
3310	}	3527	}
3311	#endif	3528	#endif
3312		3529
3313	#if EV_FORK_ENABLE	3530	#if EV_FORK_ENABLE
…		…
3389		3606
3390	void	3607	void
3391	ev_async_send (EV_P_ ev_async *w)	3608	ev_async_send (EV_P_ ev_async *w)
3392	{	3609	{
3393	w->sent = 1;	3610	w->sent = 1;
3394	evpipe_write (EV_A_ &gotasync);	3611	evpipe_write (EV_A_ &async_pending);
3395	}	3612	}
3396	#endif	3613	#endif
3397		3614
3398	/*****************************************************************************/	3615	/*****************************************************************************/
3399		3616
…		…
3439	{	3656	{
3440	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3657	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3441		3658
3442	if (expect_false (!once))	3659	if (expect_false (!once))
3443	{	3660	{
3444	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3661	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3445	return;	3662	return;
3446	}	3663	}
3447		3664
3448	once->cb = cb;	3665	once->cb = cb;
3449	once->arg = arg;	3666	once->arg = arg;
…		…
3536	if (types & EV_ASYNC)	3753	if (types & EV_ASYNC)
3537	for (i = asynccnt; i--; )	3754	for (i = asynccnt; i--; )
3538	cb (EV_A_ EV_ASYNC, asyncs [i]);	3755	cb (EV_A_ EV_ASYNC, asyncs [i]);
3539	#endif	3756	#endif
3540		3757
		3758	#if EV_PREPARE_ENABLE
3541	if (types & EV_PREPARE)	3759	if (types & EV_PREPARE)
3542	for (i = preparecnt; i--; )	3760	for (i = preparecnt; i--; )
3543	#if EV_EMBED_ENABLE	3761	# if EV_EMBED_ENABLE
3544	if (ev_cb (prepares [i]) != embed_prepare_cb)	3762	if (ev_cb (prepares [i]) != embed_prepare_cb)
3545	#endif	3763	# endif
3546	cb (EV_A_ EV_PREPARE, prepares [i]);	3764	cb (EV_A_ EV_PREPARE, prepares [i]);
		3765	#endif
3547		3766
		3767	#if EV_CHECK_ENABLE
3548	if (types & EV_CHECK)	3768	if (types & EV_CHECK)
3549	for (i = checkcnt; i--; )	3769	for (i = checkcnt; i--; )
3550	cb (EV_A_ EV_CHECK, checks [i]);	3770	cb (EV_A_ EV_CHECK, checks [i]);
		3771	#endif
3551		3772
		3773	#if EV_SIGNAL_ENABLE
3552	if (types & EV_SIGNAL)	3774	if (types & EV_SIGNAL)
3553	for (i = 0; i < signalmax; ++i)	3775	for (i = 0; i < EV_NSIG - 1; ++i)
3554	for (wl = signals [i].head; wl; )	3776	for (wl = signals [i].head; wl; )
3555	{	3777	{
3556	wn = wl->next;	3778	wn = wl->next;
3557	cb (EV_A_ EV_SIGNAL, wl);	3779	cb (EV_A_ EV_SIGNAL, wl);
3558	wl = wn;	3780	wl = wn;
3559	}	3781	}
		3782	#endif
3560		3783
		3784	#if EV_CHILD_ENABLE
3561	if (types & EV_CHILD)	3785	if (types & EV_CHILD)
3562	for (i = EV_PID_HASHSIZE; i--; )	3786	for (i = (EV_PID_HASHSIZE); i--; )
3563	for (wl = childs [i]; wl; )	3787	for (wl = childs [i]; wl; )
3564	{	3788	{
3565	wn = wl->next;	3789	wn = wl->next;
3566	cb (EV_A_ EV_CHILD, wl);	3790	cb (EV_A_ EV_CHILD, wl);
3567	wl = wn;	3791	wl = wn;
3568	}	3792	}
		3793	#endif
3569	/* EV_STAT 0x00001000 /* stat data changed */	3794	/* EV_STAT 0x00001000 /* stat data changed */
3570	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3795	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3571	}	3796	}
3572	#endif	3797	#endif
3573		3798

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