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Comparing libev/ev.c (file contents):
Revision 1.306 by root, Sun Jul 19 06:35:25 2009 UTC vs.
Revision 1.342 by root, Mon Mar 29 12:40:57 2010 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
79	# endif	79	# endif
80	# endif	80	# endif
81		81
82	# ifndef EV_USE_NANOSLEEP	82	# ifndef EV_USE_NANOSLEEP
83	# if HAVE_NANOSLEEP	83	# if HAVE_NANOSLEEP
84	# define EV_USE_NANOSLEEP 1	84	# define EV_USE_NANOSLEEP EV_FEATURE_OS
85	# else	85	# else
86	# define EV_USE_NANOSLEEP 0	86	# define EV_USE_NANOSLEEP 0
87	# endif	87	# endif
88	# endif	88	# endif
89		89
90	# ifndef EV_USE_SELECT	90	# ifndef EV_USE_SELECT
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H	91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
92	# define EV_USE_SELECT 1	92	# define EV_USE_SELECT EV_FEATURE_BACKENDS
93	# else	93	# else
94	# define EV_USE_SELECT 0	94	# define EV_USE_SELECT 0
95	# endif	95	# endif
96	# endif	96	# endif
97		97
98	# ifndef EV_USE_POLL	98	# ifndef EV_USE_POLL
99	# if HAVE_POLL && HAVE_POLL_H	99	# if HAVE_POLL && HAVE_POLL_H
100	# define EV_USE_POLL 1	100	# define EV_USE_POLL EV_FEATURE_BACKENDS
101	# else	101	# else
102	# define EV_USE_POLL 0	102	# define EV_USE_POLL 0
103	# endif	103	# endif
104	# endif	104	# endif
105		105
106	# ifndef EV_USE_EPOLL	106	# ifndef EV_USE_EPOLL
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108	# define EV_USE_EPOLL 1	108	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109	# else	109	# else
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
121		121
122	# ifndef EV_USE_PORT	122	# ifndef EV_USE_PORT
123	# if HAVE_PORT_H && HAVE_PORT_CREATE	123	# if HAVE_PORT_H && HAVE_PORT_CREATE
124	# define EV_USE_PORT 1	124	# define EV_USE_PORT EV_FEATURE_BACKENDS
125	# else	125	# else
126	# define EV_USE_PORT 0	126	# define EV_USE_PORT 0
127	# endif	127	# endif
128	# endif	128	# endif
129		129
130	# ifndef EV_USE_INOTIFY	130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132	# define EV_USE_INOTIFY 1	132	# define EV_USE_INOTIFY EV_FEATURE_OS
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
138	# ifndef EV_USE_SIGNALFD	138	# ifndef EV_USE_SIGNALFD
139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H	139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140	# define EV_USE_SIGNALFD 1	140	# define EV_USE_SIGNALFD EV_FEATURE_OS
141	# else	141	# else
142	# define EV_USE_SIGNALFD 0	142	# define EV_USE_SIGNALFD 0
143	# endif	143	# endif
144	# endif	144	# endif
145		145
146	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
147	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
148	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD EV_FEATURE_OS
149	# else	149	# else
150	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
151	# endif	151	# endif
152	# endif	152	# endif
153		153
154	#endif	154	#endif
155		155
156	#include <math.h>	156	#include <math.h>
157	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
158	#include <fcntl.h>	159	#include <fcntl.h>
159	#include <stddef.h>	160	#include <stddef.h>
160		161
161	#include <stdio.h>	162	#include <stdio.h>
162		163
163	#include <assert.h>	164	#include <assert.h>
164	#include <errno.h>	165	#include <errno.h>
165	#include <sys/types.h>	166	#include <sys/types.h>
166	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
167		169
168	#include <signal.h>	170	#include <signal.h>
169		171
170	#ifdef EV_H	172	#ifdef EV_H
171	# include EV_H	173	# include EV_H
…		…
182	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
183	# include <windows.h>	185	# include <windows.h>
184	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
185	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
186	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
187	#endif	190	#endif
188		191
189	/* this block tries to deduce configuration from header-defined symbols and defaults */	192	/* this block tries to deduce configuration from header-defined symbols and defaults */
190		193
191	/* try to deduce the maximum number of signals on this platform */	194	/* try to deduce the maximum number of signals on this platform */
192	/* one some platforms, NSIG is one too large. we do not bother */
193	#if defined (EV_NSIG)	195	#if defined (EV_NSIG)
194	/* use what's provided */	196	/* use what's provided */
195	#elif defined (NSIG)	197	#elif defined (NSIG)
196	# define EV_NSIG (NSIG)	198	# define EV_NSIG (NSIG)
197	#elif defined(_NSIG)	199	#elif defined(_NSIG)
…		…
205	#elif defined (MAXSIG)	207	#elif defined (MAXSIG)
206	# define EV_NSIG (MAXSIG+1)	208	# define EV_NSIG (MAXSIG+1)
207	#elif defined (MAX_SIG)	209	#elif defined (MAX_SIG)
208	# define EV_NSIG (MAX_SIG+1)	210	# define EV_NSIG (MAX_SIG+1)
209	#elif defined (SIGARRAYSIZE)	211	#elif defined (SIGARRAYSIZE)
210	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */	212	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
211	#elif defined (_sys_nsig)	213	#elif defined (_sys_nsig)
212	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
213	#else	215	#else
214	# error "unable to find value for NSIG, please report"	216	# error "unable to find value for NSIG, please report"
215	/* to make it compile regardless, just remove the above line */	217	/* to make it compile regardless, just remove the above line, */
		218	/* but consider reporting it, too! :) */
216	# define EV_NSIG 65	219	# define EV_NSIG 65
217	#endif	220	#endif
218		221
219	#ifndef EV_USE_CLOCK_SYSCALL	222	#ifndef EV_USE_CLOCK_SYSCALL
220	# if __linux && __GLIBC__ >= 2	223	# if __linux && __GLIBC__ >= 2
221	# define EV_USE_CLOCK_SYSCALL 1	224	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
222	# else	225	# else
223	# define EV_USE_CLOCK_SYSCALL 0	226	# define EV_USE_CLOCK_SYSCALL 0
224	# endif	227	# endif
225	#endif	228	#endif
226		229
227	#ifndef EV_USE_MONOTONIC	230	#ifndef EV_USE_MONOTONIC
228	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	231	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
229	# define EV_USE_MONOTONIC 1	232	# define EV_USE_MONOTONIC EV_FEATURE_OS
230	# else	233	# else
231	# define EV_USE_MONOTONIC 0	234	# define EV_USE_MONOTONIC 0
232	# endif	235	# endif
233	#endif	236	#endif
234		237
…		…
236	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	239	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
237	#endif	240	#endif
238		241
239	#ifndef EV_USE_NANOSLEEP	242	#ifndef EV_USE_NANOSLEEP
240	# if _POSIX_C_SOURCE >= 199309L	243	# if _POSIX_C_SOURCE >= 199309L
241	# define EV_USE_NANOSLEEP 1	244	# define EV_USE_NANOSLEEP EV_FEATURE_OS
242	# else	245	# else
243	# define EV_USE_NANOSLEEP 0	246	# define EV_USE_NANOSLEEP 0
244	# endif	247	# endif
245	#endif	248	#endif
246		249
247	#ifndef EV_USE_SELECT	250	#ifndef EV_USE_SELECT
248	# define EV_USE_SELECT 1	251	# define EV_USE_SELECT EV_FEATURE_BACKENDS
249	#endif	252	#endif
250		253
251	#ifndef EV_USE_POLL	254	#ifndef EV_USE_POLL
252	# ifdef _WIN32	255	# ifdef _WIN32
253	# define EV_USE_POLL 0	256	# define EV_USE_POLL 0
254	# else	257	# else
255	# define EV_USE_POLL 1	258	# define EV_USE_POLL EV_FEATURE_BACKENDS
256	# endif	259	# endif
257	#endif	260	#endif
258		261
259	#ifndef EV_USE_EPOLL	262	#ifndef EV_USE_EPOLL
260	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	263	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
261	# define EV_USE_EPOLL 1	264	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
262	# else	265	# else
263	# define EV_USE_EPOLL 0	266	# define EV_USE_EPOLL 0
264	# endif	267	# endif
265	#endif	268	#endif
266		269
…		…
272	# define EV_USE_PORT 0	275	# define EV_USE_PORT 0
273	#endif	276	#endif
274		277
275	#ifndef EV_USE_INOTIFY	278	#ifndef EV_USE_INOTIFY
276	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	279	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
277	# define EV_USE_INOTIFY 1	280	# define EV_USE_INOTIFY EV_FEATURE_OS
278	# else	281	# else
279	# define EV_USE_INOTIFY 0	282	# define EV_USE_INOTIFY 0
280	# endif	283	# endif
281	#endif	284	#endif
282		285
283	#ifndef EV_PID_HASHSIZE	286	#ifndef EV_PID_HASHSIZE
284	# if EV_MINIMAL	287	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
285	# define EV_PID_HASHSIZE 1
286	# else
287	# define EV_PID_HASHSIZE 16
288	# endif
289	#endif	288	#endif
290		289
291	#ifndef EV_INOTIFY_HASHSIZE	290	#ifndef EV_INOTIFY_HASHSIZE
292	# if EV_MINIMAL	291	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
293	# define EV_INOTIFY_HASHSIZE 1
294	# else
295	# define EV_INOTIFY_HASHSIZE 16
296	# endif
297	#endif	292	#endif
298		293
299	#ifndef EV_USE_EVENTFD	294	#ifndef EV_USE_EVENTFD
300	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	295	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
301	# define EV_USE_EVENTFD 1	296	# define EV_USE_EVENTFD EV_FEATURE_OS
302	# else	297	# else
303	# define EV_USE_EVENTFD 0	298	# define EV_USE_EVENTFD 0
304	# endif	299	# endif
305	#endif	300	#endif
306		301
307	#ifndef EV_USE_SIGNALFD	302	#ifndef EV_USE_SIGNALFD
308	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
309	# define EV_USE_SIGNALFD 1	304	# define EV_USE_SIGNALFD EV_FEATURE_OS
310	# else	305	# else
311	# define EV_USE_SIGNALFD 0	306	# define EV_USE_SIGNALFD 0
312	# endif	307	# endif
313	#endif	308	#endif
314		309
…		…
317	# define EV_USE_4HEAP 1	312	# define EV_USE_4HEAP 1
318	# define EV_HEAP_CACHE_AT 1	313	# define EV_HEAP_CACHE_AT 1
319	#endif	314	#endif
320		315
321	#ifndef EV_VERIFY	316	#ifndef EV_VERIFY
322	# define EV_VERIFY !EV_MINIMAL	317	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
323	#endif	318	#endif
324		319
325	#ifndef EV_USE_4HEAP	320	#ifndef EV_USE_4HEAP
326	# define EV_USE_4HEAP !EV_MINIMAL	321	# define EV_USE_4HEAP EV_FEATURE_DATA
327	#endif	322	#endif
328		323
329	#ifndef EV_HEAP_CACHE_AT	324	#ifndef EV_HEAP_CACHE_AT
330	# define EV_HEAP_CACHE_AT !EV_MINIMAL	325	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
331	#endif	326	#endif
332		327
333	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	328	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
334	/* which makes programs even slower. might work on other unices, too. */	329	/* which makes programs even slower. might work on other unices, too. */
335	#if EV_USE_CLOCK_SYSCALL	330	#if EV_USE_CLOCK_SYSCALL
…		…
344	# endif	339	# endif
345	#endif	340	#endif
346		341
347	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	342	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
348		343
		344	#ifdef _AIX
		345	/* AIX has a completely broken poll.h header */
		346	# undef EV_USE_POLL
		347	# define EV_USE_POLL 0
		348	#endif
		349
349	#ifndef CLOCK_MONOTONIC	350	#ifndef CLOCK_MONOTONIC
350	# undef EV_USE_MONOTONIC	351	# undef EV_USE_MONOTONIC
351	# define EV_USE_MONOTONIC 0	352	# define EV_USE_MONOTONIC 0
352	#endif	353	#endif
353		354
…		…
387	# include <stdint.h>	388	# include <stdint.h>
388	# ifndef EFD_NONBLOCK	389	# ifndef EFD_NONBLOCK
389	# define EFD_NONBLOCK O_NONBLOCK	390	# define EFD_NONBLOCK O_NONBLOCK
390	# endif	391	# endif
391	# ifndef EFD_CLOEXEC	392	# ifndef EFD_CLOEXEC
		393	# ifdef O_CLOEXEC
392	# define EFD_CLOEXEC O_CLOEXEC	394	# define EFD_CLOEXEC O_CLOEXEC
		395	# else
		396	# define EFD_CLOEXEC 02000000
		397	# endif
393	# endif	398	# endif
394	# ifdef __cplusplus	399	# ifdef __cplusplus
395	extern "C" {	400	extern "C" {
396	# endif	401	# endif
397	int eventfd (unsigned int initval, int flags);	402	int (eventfd) (unsigned int initval, int flags);
398	# ifdef __cplusplus	403	# ifdef __cplusplus
399	}	404	}
400	# endif	405	# endif
401	#endif	406	#endif
402		407
403	#if EV_USE_SIGNALFD	408	#if EV_USE_SIGNALFD
404	# include <sys/signalfd.h>	409	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		410	# include <stdint.h>
		411	# ifndef SFD_NONBLOCK
		412	# define SFD_NONBLOCK O_NONBLOCK
405	#endif	413	# endif
		414	# ifndef SFD_CLOEXEC
		415	# ifdef O_CLOEXEC
		416	# define SFD_CLOEXEC O_CLOEXEC
		417	# else
		418	# define SFD_CLOEXEC 02000000
		419	# endif
		420	# endif
		421	# ifdef __cplusplus
		422	extern "C" {
		423	# endif
		424	int signalfd (int fd, const sigset_t *mask, int flags);
		425
		426	struct signalfd_siginfo
		427	{
		428	uint32_t ssi_signo;
		429	char pad[128 - sizeof (uint32_t)];
		430	};
		431	# ifdef __cplusplus
		432	}
		433	# endif
		434	#endif
		435
406		436
407	/**/	437	/**/
408		438
409	#if EV_VERIFY >= 3	439	#if EV_VERIFY >= 3
410	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	440	# define EV_FREQUENT_CHECK ev_verify (EV_A)
411	#else	441	#else
412	# define EV_FREQUENT_CHECK do { } while (0)	442	# define EV_FREQUENT_CHECK do { } while (0)
413	#endif	443	#endif
414		444
415	/*	445	/*
…		…
422	*/	452	*/
423	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	453	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
424		454
425	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	455	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
426	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	456	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
427	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
428		457
429	#if __GNUC__ >= 4	458	#if __GNUC__ >= 4
430	# define expect(expr,value) __builtin_expect ((expr),(value))	459	# define expect(expr,value) __builtin_expect ((expr),(value))
431	# define noinline __attribute__ ((noinline))	460	# define noinline __attribute__ ((noinline))
432	#else	461	#else
…		…
439		468
440	#define expect_false(expr) expect ((expr) != 0, 0)	469	#define expect_false(expr) expect ((expr) != 0, 0)
441	#define expect_true(expr) expect ((expr) != 0, 1)	470	#define expect_true(expr) expect ((expr) != 0, 1)
442	#define inline_size static inline	471	#define inline_size static inline
443		472
444	#if EV_MINIMAL	473	#if EV_FEATURE_CODE
		474	# define inline_speed static inline
		475	#else
445	# define inline_speed static noinline	476	# define inline_speed static noinline
446	#else
447	# define inline_speed static inline
448	#endif	477	#endif
449		478
450	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	479	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
451		480
452	#if EV_MINPRI == EV_MAXPRI	481	#if EV_MINPRI == EV_MAXPRI
…		…
473		502
474	#if EV_USE_MONOTONIC	503	#if EV_USE_MONOTONIC
475	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	504	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
476	#endif	505	#endif
477		506
		507	#ifndef EV_FD_TO_WIN32_HANDLE
		508	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		509	#endif
		510	#ifndef EV_WIN32_HANDLE_TO_FD
		511	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		512	#endif
		513	#ifndef EV_WIN32_CLOSE_FD
		514	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		515	#endif
		516
478	#ifdef _WIN32	517	#ifdef _WIN32
479	# include "ev_win32.c"	518	# include "ev_win32.c"
480	#endif	519	#endif
481		520
482	/*****************************************************************************/	521	/*****************************************************************************/
		522
		523	#if EV_AVOID_STDIO
		524	static void noinline
		525	ev_printerr (const char *msg)
		526	{
		527	write (STDERR_FILENO, msg, strlen (msg));
		528	}
		529	#endif
483		530
484	static void (*syserr_cb)(const char *msg);	531	static void (*syserr_cb)(const char *msg);
485		532
486	void	533	void
487	ev_set_syserr_cb (void (*cb)(const char *msg))	534	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
497		544
498	if (syserr_cb)	545	if (syserr_cb)
499	syserr_cb (msg);	546	syserr_cb (msg);
500	else	547	else
501	{	548	{
		549	#if EV_AVOID_STDIO
		550	const char *err = strerror (errno);
		551
		552	ev_printerr (msg);
		553	ev_printerr (": ");
		554	ev_printerr (err);
		555	ev_printerr ("\n");
		556	#else
502	perror (msg);	557	perror (msg);
		558	#endif
503	abort ();	559	abort ();
504	}	560	}
505	}	561	}
506		562
507	static void *	563	static void *
508	ev_realloc_emul (void *ptr, long size)	564	ev_realloc_emul (void *ptr, long size)
509	{	565	{
		566	#if __GLIBC__
		567	return realloc (ptr, size);
		568	#else
510	/* some systems, notably openbsd and darwin, fail to properly	569	/* some systems, notably openbsd and darwin, fail to properly
511	* implement realloc (x, 0) (as required by both ansi c-98 and	570	* implement realloc (x, 0) (as required by both ansi c-89 and
512	* the single unix specification, so work around them here.	571	* the single unix specification, so work around them here.
513	*/	572	*/
514		573
515	if (size)	574	if (size)
516	return realloc (ptr, size);	575	return realloc (ptr, size);
517		576
518	free (ptr);	577	free (ptr);
519	return 0;	578	return 0;
		579	#endif
520	}	580	}
521		581
522	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	582	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
523		583
524	void	584	void
…		…
532	{	592	{
533	ptr = alloc (ptr, size);	593	ptr = alloc (ptr, size);
534		594
535	if (!ptr && size)	595	if (!ptr && size)
536	{	596	{
		597	#if EV_AVOID_STDIO
		598	ev_printerr ("libev: memory allocation failed, aborting.\n");
		599	#else
537	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	600	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		601	#endif
538	abort ();	602	abort ();
539	}	603	}
540		604
541	return ptr;	605	return ptr;
542	}	606	}
…		…
624		688
625	static int ev_default_loop_ptr;	689	static int ev_default_loop_ptr;
626		690
627	#endif	691	#endif
628		692
629	#if EV_MINIMAL < 2	693	#if EV_FEATURE_API
630	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)	694	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
631	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)	695	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
632	# define EV_INVOKE_PENDING invoke_cb (EV_A)	696	# define EV_INVOKE_PENDING invoke_cb (EV_A)
633	#else	697	#else
634	# define EV_RELEASE_CB (void)0	698	# define EV_RELEASE_CB (void)0
…		…
819	}	883	}
820		884
821	/*****************************************************************************/	885	/*****************************************************************************/
822		886
823	inline_speed void	887	inline_speed void
824	fd_event_nc (EV_P_ int fd, int revents)	888	fd_event_nocheck (EV_P_ int fd, int revents)
825	{	889	{
826	ANFD *anfd = anfds + fd;	890	ANFD *anfd = anfds + fd;
827	ev_io *w;	891	ev_io *w;
828		892
829	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	893	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
841	fd_event (EV_P_ int fd, int revents)	905	fd_event (EV_P_ int fd, int revents)
842	{	906	{
843	ANFD *anfd = anfds + fd;	907	ANFD *anfd = anfds + fd;
844		908
845	if (expect_true (!anfd->reify))	909	if (expect_true (!anfd->reify))
846	fd_event_nc (EV_A_ fd, revents);	910	fd_event_nocheck (EV_A_ fd, revents);
847	}	911	}
848		912
849	void	913	void
850	ev_feed_fd_event (EV_P_ int fd, int revents)	914	ev_feed_fd_event (EV_P_ int fd, int revents)
851	{	915	{
852	if (fd >= 0 && fd < anfdmax)	916	if (fd >= 0 && fd < anfdmax)
853	fd_event_nc (EV_A_ fd, revents);	917	fd_event_nocheck (EV_A_ fd, revents);
854	}	918	}
855		919
856	/* make sure the external fd watch events are in-sync */	920	/* make sure the external fd watch events are in-sync */
857	/* with the kernel/libev internal state */	921	/* with the kernel/libev internal state */
858	inline_size void	922	inline_size void
…		…
873		937
874	#if EV_SELECT_IS_WINSOCKET	938	#if EV_SELECT_IS_WINSOCKET
875	if (events)	939	if (events)
876	{	940	{
877	unsigned long arg;	941	unsigned long arg;
878	#ifdef EV_FD_TO_WIN32_HANDLE
879	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	942	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
880	#else
881	anfd->handle = _get_osfhandle (fd);
882	#endif
883	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	943	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
884	}	944	}
885	#endif	945	#endif
886		946
887	{	947	{
…		…
925	ev_io_stop (EV_A_ w);	985	ev_io_stop (EV_A_ w);
926	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	986	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
927	}	987	}
928	}	988	}
929		989
930	/* check whether the given fd is atcually valid, for error recovery */	990	/* check whether the given fd is actually valid, for error recovery */
931	inline_size int	991	inline_size int
932	fd_valid (int fd)	992	fd_valid (int fd)
933	{	993	{
934	#ifdef _WIN32	994	#ifdef _WIN32
935	return _get_osfhandle (fd) != -1;	995	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
936	#else	996	#else
937	return fcntl (fd, F_GETFD) != -1;	997	return fcntl (fd, F_GETFD) != -1;
938	#endif	998	#endif
939	}	999	}
940		1000
…		…
958		1018
959	for (fd = anfdmax; fd--; )	1019	for (fd = anfdmax; fd--; )
960	if (anfds [fd].events)	1020	if (anfds [fd].events)
961	{	1021	{
962	fd_kill (EV_A_ fd);	1022	fd_kill (EV_A_ fd);
963	return;	1023	break;
964	}	1024	}
965	}	1025	}
966		1026
967	/* usually called after fork if backend needs to re-arm all fds from scratch */	1027	/* usually called after fork if backend needs to re-arm all fds from scratch */
968	static void noinline	1028	static void noinline
…		…
975	{	1035	{
976	anfds [fd].events = 0;	1036	anfds [fd].events = 0;
977	anfds [fd].emask = 0;	1037	anfds [fd].emask = 0;
978	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);	1038	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
979	}	1039	}
		1040	}
		1041
		1042	/* used to prepare libev internal fd's */
		1043	/* this is not fork-safe */
		1044	inline_speed void
		1045	fd_intern (int fd)
		1046	{
		1047	#ifdef _WIN32
		1048	unsigned long arg = 1;
		1049	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1050	#else
		1051	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1052	fcntl (fd, F_SETFL, O_NONBLOCK);
		1053	#endif
980	}	1054	}
981		1055
982	/*****************************************************************************/	1056	/*****************************************************************************/
983		1057
984	/*	1058	/*
…		…
1058		1132
1059	for (;;)	1133	for (;;)
1060	{	1134	{
1061	int c = k << 1;	1135	int c = k << 1;
1062		1136
1063	if (c > N + HEAP0 - 1)	1137	if (c >= N + HEAP0)
1064	break;	1138	break;
1065		1139
1066	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1140	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1067	? 1 : 0;	1141	? 1 : 0;
1068		1142
…		…
1104		1178
1105	/* move an element suitably so it is in a correct place */	1179	/* move an element suitably so it is in a correct place */
1106	inline_size void	1180	inline_size void
1107	adjustheap (ANHE *heap, int N, int k)	1181	adjustheap (ANHE *heap, int N, int k)
1108	{	1182	{
1109	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1183	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1110	upheap (heap, k);	1184	upheap (heap, k);
1111	else	1185	else
1112	downheap (heap, N, k);	1186	downheap (heap, N, k);
1113	}	1187	}
1114		1188
…		…
1127	/*****************************************************************************/	1201	/*****************************************************************************/
1128		1202
1129	/* associate signal watchers to a signal signal */	1203	/* associate signal watchers to a signal signal */
1130	typedef struct	1204	typedef struct
1131	{	1205	{
		1206	EV_ATOMIC_T pending;
1132	#if EV_MULTIPLICITY	1207	#if EV_MULTIPLICITY
1133	EV_P;	1208	EV_P;
1134	#endif	1209	#endif
1135	WL head;	1210	WL head;
1136	EV_ATOMIC_T gotsig;
1137	} ANSIG;	1211	} ANSIG;
1138		1212
1139	static ANSIG signals [EV_NSIG - 1];	1213	static ANSIG signals [EV_NSIG - 1];
1140	static EV_ATOMIC_T gotsig;
1141		1214
1142	/*****************************************************************************/	1215	/*****************************************************************************/
1143		1216
1144	/* used to prepare libev internal fd's */	1217	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1145	/* this is not fork-safe */
1146	inline_speed void
1147	fd_intern (int fd)
1148	{
1149	#ifdef _WIN32
1150	unsigned long arg = 1;
1151	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1152	#else
1153	fcntl (fd, F_SETFD, FD_CLOEXEC);
1154	fcntl (fd, F_SETFL, O_NONBLOCK);
1155	#endif
1156	}
1157		1218
1158	static void noinline	1219	static void noinline
1159	evpipe_init (EV_P)	1220	evpipe_init (EV_P)
1160	{	1221	{
1161	if (!ev_is_active (&pipe_w))	1222	if (!ev_is_active (&pipe_w))
1162	{	1223	{
1163	#if EV_USE_EVENTFD	1224	# if EV_USE_EVENTFD
1164	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);	1225	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1165	if (evfd < 0 && errno == EINVAL)	1226	if (evfd < 0 && errno == EINVAL)
1166	evfd = eventfd (0, 0);	1227	evfd = eventfd (0, 0);
1167		1228
1168	if (evfd >= 0)	1229	if (evfd >= 0)
…		…
1170	evpipe [0] = -1;	1231	evpipe [0] = -1;
1171	fd_intern (evfd); /* doing it twice doesn't hurt */	1232	fd_intern (evfd); /* doing it twice doesn't hurt */
1172	ev_io_set (&pipe_w, evfd, EV_READ);	1233	ev_io_set (&pipe_w, evfd, EV_READ);
1173	}	1234	}
1174	else	1235	else
1175	#endif	1236	# endif
1176	{	1237	{
1177	while (pipe (evpipe))	1238	while (pipe (evpipe))
1178	ev_syserr ("(libev) error creating signal/async pipe");	1239	ev_syserr ("(libev) error creating signal/async pipe");
1179		1240
1180	fd_intern (evpipe [0]);	1241	fd_intern (evpipe [0]);
…		…
1191	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1252	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1192	{	1253	{
1193	if (!*flag)	1254	if (!*flag)
1194	{	1255	{
1195	int old_errno = errno; /* save errno because write might clobber it */	1256	int old_errno = errno; /* save errno because write might clobber it */
		1257	char dummy;
1196		1258
1197	*flag = 1;	1259	*flag = 1;
1198		1260
1199	#if EV_USE_EVENTFD	1261	#if EV_USE_EVENTFD
1200	if (evfd >= 0)	1262	if (evfd >= 0)
…		…
1202	uint64_t counter = 1;	1264	uint64_t counter = 1;
1203	write (evfd, &counter, sizeof (uint64_t));	1265	write (evfd, &counter, sizeof (uint64_t));
1204	}	1266	}
1205	else	1267	else
1206	#endif	1268	#endif
1207	write (evpipe [1], &old_errno, 1);	1269	write (evpipe [1], &dummy, 1);
1208		1270
1209	errno = old_errno;	1271	errno = old_errno;
1210	}	1272	}
1211	}	1273	}
1212		1274
1213	/* called whenever the libev signal pipe */	1275	/* called whenever the libev signal pipe */
1214	/* got some events (signal, async) */	1276	/* got some events (signal, async) */
1215	static void	1277	static void
1216	pipecb (EV_P_ ev_io *iow, int revents)	1278	pipecb (EV_P_ ev_io *iow, int revents)
1217	{	1279	{
		1280	int i;
		1281
1218	#if EV_USE_EVENTFD	1282	#if EV_USE_EVENTFD
1219	if (evfd >= 0)	1283	if (evfd >= 0)
1220	{	1284	{
1221	uint64_t counter;	1285	uint64_t counter;
1222	read (evfd, &counter, sizeof (uint64_t));	1286	read (evfd, &counter, sizeof (uint64_t));
…		…
1226	{	1290	{
1227	char dummy;	1291	char dummy;
1228	read (evpipe [0], &dummy, 1);	1292	read (evpipe [0], &dummy, 1);
1229	}	1293	}
1230		1294
1231	if (gotsig && ev_is_default_loop (EV_A))	1295	if (sig_pending)
1232	{	1296	{
1233	int signum;	1297	sig_pending = 0;
1234	gotsig = 0;
1235		1298
1236	for (signum = EV_NSIG - 1; signum--; )	1299	for (i = EV_NSIG - 1; i--; )
1237	if (signals [signum].gotsig)	1300	if (expect_false (signals [i].pending))
1238	ev_feed_signal_event (EV_A_ signum + 1);	1301	ev_feed_signal_event (EV_A_ i + 1);
1239	}	1302	}
1240		1303
1241	#if EV_ASYNC_ENABLE	1304	#if EV_ASYNC_ENABLE
1242	if (gotasync)	1305	if (async_pending)
1243	{	1306	{
1244	int i;	1307	async_pending = 0;
1245	gotasync = 0;
1246		1308
1247	for (i = asynccnt; i--; )	1309	for (i = asynccnt; i--; )
1248	if (asyncs [i]->sent)	1310	if (asyncs [i]->sent)
1249	{	1311	{
1250	asyncs [i]->sent = 0;	1312	asyncs [i]->sent = 0;
…		…
1261	{	1323	{
1262	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1263	EV_P = signals [signum - 1].loop;	1325	EV_P = signals [signum - 1].loop;
1264	#endif	1326	#endif
1265		1327
1266	#if _WIN32	1328	#ifdef _WIN32
1267	signal (signum, ev_sighandler);	1329	signal (signum, ev_sighandler);
1268	#endif	1330	#endif
1269		1331
1270	signals [signum - 1].gotsig = 1;	1332	signals [signum - 1].pending = 1;
1271	evpipe_write (EV_A_ &gotsig);	1333	evpipe_write (EV_A_ &sig_pending);
1272	}	1334	}
1273		1335
1274	void noinline	1336	void noinline
1275	ev_feed_signal_event (EV_P_ int signum)	1337	ev_feed_signal_event (EV_P_ int signum)
1276	{	1338	{
1277	WL w;	1339	WL w;
1278		1340
		1341	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1342	return;
		1343
		1344	--signum;
		1345
1279	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
1280	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1347	/* it is permissible to try to feed a signal to the wrong loop */
1281	#endif	1348	/* or, likely more useful, feeding a signal nobody is waiting for */
1282		1349
1283	if (signum <= 0 || signum > EV_NSIG)	1350	if (expect_false (signals [signum].loop != EV_A))
1284	return;	1351	return;
		1352	#endif
1285		1353
1286	--signum;
1287
1288	signals [signum].gotsig = 0;	1354	signals [signum].pending = 0;
1289		1355
1290	for (w = signals [signum].head; w; w = w->next)	1356	for (w = signals [signum].head; w; w = w->next)
1291	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1357	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1292	}	1358	}
1293		1359
…		…
1309	break;	1375	break;
1310	}	1376	}
1311	}	1377	}
1312	#endif	1378	#endif
1313		1379
		1380	#endif
		1381
1314	/*****************************************************************************/	1382	/*****************************************************************************/
1315		1383
		1384	#if EV_CHILD_ENABLE
1316	static WL childs [EV_PID_HASHSIZE];	1385	static WL childs [EV_PID_HASHSIZE];
1317
1318	#ifndef _WIN32
1319		1386
1320	static ev_signal childev;	1387	static ev_signal childev;
1321		1388
1322	#ifndef WIFCONTINUED	1389	#ifndef WIFCONTINUED
1323	# define WIFCONTINUED(status) 0	1390	# define WIFCONTINUED(status) 0
…		…
1328	child_reap (EV_P_ int chain, int pid, int status)	1395	child_reap (EV_P_ int chain, int pid, int status)
1329	{	1396	{
1330	ev_child *w;	1397	ev_child *w;
1331	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1398	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1332		1399
1333	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1400	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1334	{	1401	{
1335	if ((w->pid == pid || !w->pid)	1402	if ((w->pid == pid || !w->pid)
1336	&& (!traced || (w->flags & 1)))	1403	&& (!traced || (w->flags & 1)))
1337	{	1404	{
1338	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1405	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
1363	/* make sure we are called again until all children have been reaped */	1430	/* make sure we are called again until all children have been reaped */
1364	/* we need to do it this way so that the callback gets called before we continue */	1431	/* we need to do it this way so that the callback gets called before we continue */
1365	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1432	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1366		1433
1367	child_reap (EV_A_ pid, pid, status);	1434	child_reap (EV_A_ pid, pid, status);
1368	if (EV_PID_HASHSIZE > 1)	1435	if ((EV_PID_HASHSIZE) > 1)
1369	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1436	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1370	}	1437	}
1371		1438
1372	#endif	1439	#endif
1373		1440
…		…
1440	#ifdef __APPLE__	1507	#ifdef __APPLE__
1441	/* only select works correctly on that "unix-certified" platform */	1508	/* only select works correctly on that "unix-certified" platform */
1442	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1509	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1443	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1510	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1444	#endif	1511	#endif
		1512	#ifdef __FreeBSD__
		1513	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1514	#endif
1445		1515
1446	return flags;	1516	return flags;
1447	}	1517	}
1448		1518
1449	unsigned int	1519	unsigned int
…		…
1462	ev_backend (EV_P)	1532	ev_backend (EV_P)
1463	{	1533	{
1464	return backend;	1534	return backend;
1465	}	1535	}
1466		1536
1467	#if EV_MINIMAL < 2	1537	#if EV_FEATURE_API
1468	unsigned int	1538	unsigned int
1469	ev_loop_count (EV_P)	1539	ev_iteration (EV_P)
1470	{	1540	{
1471	return loop_count;	1541	return loop_count;
1472	}	1542	}
1473		1543
1474	unsigned int	1544	unsigned int
1475	ev_loop_depth (EV_P)	1545	ev_depth (EV_P)
1476	{	1546	{
1477	return loop_depth;	1547	return loop_depth;
1478	}	1548	}
1479		1549
1480	void	1550	void
…		…
1552		1622
1553	ev_rt_now = ev_time ();	1623	ev_rt_now = ev_time ();
1554	mn_now = get_clock ();	1624	mn_now = get_clock ();
1555	now_floor = mn_now;	1625	now_floor = mn_now;
1556	rtmn_diff = ev_rt_now - mn_now;	1626	rtmn_diff = ev_rt_now - mn_now;
1557	#if EV_MINIMAL < 2	1627	#if EV_FEATURE_API
1558	invoke_cb = ev_invoke_pending;	1628	invoke_cb = ev_invoke_pending;
1559	#endif	1629	#endif
1560		1630
1561	io_blocktime = 0.;	1631	io_blocktime = 0.;
1562	timeout_blocktime = 0.;	1632	timeout_blocktime = 0.;
1563	backend = 0;	1633	backend = 0;
1564	backend_fd = -1;	1634	backend_fd = -1;
1565	gotasync = 0;	1635	sig_pending = 0;
		1636	#if EV_ASYNC_ENABLE
		1637	async_pending = 0;
		1638	#endif
1566	#if EV_USE_INOTIFY	1639	#if EV_USE_INOTIFY
1567	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1640	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1568	#endif	1641	#endif
1569	#if EV_USE_SIGNALFD	1642	#if EV_USE_SIGNALFD
1570	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;	1643	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1571	#endif	1644	#endif
1572		1645
1573	if (!(flags & 0x0000ffffU))	1646	if (!(flags & 0x0000ffffU))
1574	flags |= ev_recommended_backends ();	1647	flags |= ev_recommended_backends ();
1575		1648
…		…
1589	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1662	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1590	#endif	1663	#endif
1591		1664
1592	ev_prepare_init (&pending_w, pendingcb);	1665	ev_prepare_init (&pending_w, pendingcb);
1593		1666
		1667	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1594	ev_init (&pipe_w, pipecb);	1668	ev_init (&pipe_w, pipecb);
1595	ev_set_priority (&pipe_w, EV_MAXPRI);	1669	ev_set_priority (&pipe_w, EV_MAXPRI);
		1670	#endif
1596	}	1671	}
1597	}	1672	}
1598		1673
1599	/* free up a loop structure */	1674	/* free up a loop structure */
1600	static void noinline	1675	static void noinline
…		…
1612	close (evfd);	1687	close (evfd);
1613	#endif	1688	#endif
1614		1689
1615	if (evpipe [0] >= 0)	1690	if (evpipe [0] >= 0)
1616	{	1691	{
1617	close (evpipe [0]);	1692	EV_WIN32_CLOSE_FD (evpipe [0]);
1618	close (evpipe [1]);	1693	EV_WIN32_CLOSE_FD (evpipe [1]);
1619	}	1694	}
1620	}	1695	}
1621		1696
1622	#if EV_USE_SIGNALFD	1697	#if EV_USE_SIGNALFD
1623	if (ev_is_active (&sigfd_w))	1698	if (ev_is_active (&sigfd_w))
1624	{
1625	/*ev_ref (EV_A);*/
1626	/*ev_io_stop (EV_A_ &sigfd_w);*/
1627
1628	close (sigfd);	1699	close (sigfd);
1629	}
1630	#endif	1700	#endif
1631		1701
1632	#if EV_USE_INOTIFY	1702	#if EV_USE_INOTIFY
1633	if (fs_fd >= 0)	1703	if (fs_fd >= 0)
1634	close (fs_fd);	1704	close (fs_fd);
…		…
1704		1774
1705	if (ev_is_active (&pipe_w))	1775	if (ev_is_active (&pipe_w))
1706	{	1776	{
1707	/* this "locks" the handlers against writing to the pipe */	1777	/* this "locks" the handlers against writing to the pipe */
1708	/* while we modify the fd vars */	1778	/* while we modify the fd vars */
1709	gotsig = 1;	1779	sig_pending = 1;
1710	#if EV_ASYNC_ENABLE	1780	#if EV_ASYNC_ENABLE
1711	gotasync = 1;	1781	async_pending = 1;
1712	#endif	1782	#endif
1713		1783
1714	ev_ref (EV_A);	1784	ev_ref (EV_A);
1715	ev_io_stop (EV_A_ &pipe_w);	1785	ev_io_stop (EV_A_ &pipe_w);
1716		1786
…		…
1719	close (evfd);	1789	close (evfd);
1720	#endif	1790	#endif
1721		1791
1722	if (evpipe [0] >= 0)	1792	if (evpipe [0] >= 0)
1723	{	1793	{
1724	close (evpipe [0]);	1794	EV_WIN32_CLOSE_FD (evpipe [0]);
1725	close (evpipe [1]);	1795	EV_WIN32_CLOSE_FD (evpipe [1]);
1726	}	1796	}
1727		1797
		1798	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1728	evpipe_init (EV_A);	1799	evpipe_init (EV_A);
1729	/* now iterate over everything, in case we missed something */	1800	/* now iterate over everything, in case we missed something */
1730	pipecb (EV_A_ &pipe_w, EV_READ);	1801	pipecb (EV_A_ &pipe_w, EV_READ);
		1802	#endif
1731	}	1803	}
1732		1804
1733	postfork = 0;	1805	postfork = 0;
1734	}	1806	}
1735		1807
…		…
1797	verify_watcher (EV_A_ ws [cnt]);	1869	verify_watcher (EV_A_ ws [cnt]);
1798	}	1870	}
1799	}	1871	}
1800	#endif	1872	#endif
1801		1873
1802	#if EV_MINIMAL < 2	1874	#if EV_FEATURE_API
1803	void	1875	void
1804	ev_loop_verify (EV_P)	1876	ev_verify (EV_P)
1805	{	1877	{
1806	#if EV_VERIFY	1878	#if EV_VERIFY
1807	int i;	1879	int i;
1808	WL w;	1880	WL w;
1809		1881
…		…
1848	#if EV_ASYNC_ENABLE	1920	#if EV_ASYNC_ENABLE
1849	assert (asyncmax >= asynccnt);	1921	assert (asyncmax >= asynccnt);
1850	array_verify (EV_A_ (W *)asyncs, asynccnt);	1922	array_verify (EV_A_ (W *)asyncs, asynccnt);
1851	#endif	1923	#endif
1852		1924
		1925	#if EV_PREPARE_ENABLE
1853	assert (preparemax >= preparecnt);	1926	assert (preparemax >= preparecnt);
1854	array_verify (EV_A_ (W *)prepares, preparecnt);	1927	array_verify (EV_A_ (W *)prepares, preparecnt);
		1928	#endif
1855		1929
		1930	#if EV_CHECK_ENABLE
1856	assert (checkmax >= checkcnt);	1931	assert (checkmax >= checkcnt);
1857	array_verify (EV_A_ (W *)checks, checkcnt);	1932	array_verify (EV_A_ (W *)checks, checkcnt);
		1933	#endif
1858		1934
1859	# if 0	1935	# if 0
		1936	#if EV_CHILD_ENABLE
1860	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1937	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1861	for (signum = EV_NSIG; signum--; ) if (signals [signum].gotsig)	1938	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1939	#endif
1862	# endif	1940	# endif
1863	#endif	1941	#endif
1864	}	1942	}
1865	#endif	1943	#endif
1866		1944
…		…
1882		1960
1883	loop_init (EV_A_ flags);	1961	loop_init (EV_A_ flags);
1884		1962
1885	if (ev_backend (EV_A))	1963	if (ev_backend (EV_A))
1886	{	1964	{
1887	#ifndef _WIN32	1965	#if EV_CHILD_ENABLE
1888	ev_signal_init (&childev, childcb, SIGCHLD);	1966	ev_signal_init (&childev, childcb, SIGCHLD);
1889	ev_set_priority (&childev, EV_MAXPRI);	1967	ev_set_priority (&childev, EV_MAXPRI);
1890	ev_signal_start (EV_A_ &childev);	1968	ev_signal_start (EV_A_ &childev);
1891	ev_unref (EV_A); /* child watcher should not keep loop alive */	1969	ev_unref (EV_A); /* child watcher should not keep loop alive */
1892	#endif	1970	#endif
…		…
1905	EV_P = ev_default_loop_ptr;	1983	EV_P = ev_default_loop_ptr;
1906	#endif	1984	#endif
1907		1985
1908	ev_default_loop_ptr = 0;	1986	ev_default_loop_ptr = 0;
1909		1987
1910	#ifndef _WIN32	1988	#if EV_CHILD_ENABLE
1911	ev_ref (EV_A); /* child watcher */	1989	ev_ref (EV_A); /* child watcher */
1912	ev_signal_stop (EV_A_ &childev);	1990	ev_signal_stop (EV_A_ &childev);
1913	#endif	1991	#endif
1914		1992
1915	loop_destroy (EV_A);	1993	loop_destroy (EV_A);
…		…
2021	EV_FREQUENT_CHECK;	2099	EV_FREQUENT_CHECK;
2022	feed_reverse (EV_A_ (W)w);	2100	feed_reverse (EV_A_ (W)w);
2023	}	2101	}
2024	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2102	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2025		2103
2026	feed_reverse_done (EV_A_ EV_TIMEOUT);	2104	feed_reverse_done (EV_A_ EV_TIMER);
2027	}	2105	}
2028	}	2106	}
2029		2107
2030	#if EV_PERIODIC_ENABLE	2108	#if EV_PERIODIC_ENABLE
2031	/* make periodics pending */	2109	/* make periodics pending */
…		…
2122	ANHE_at_cache (*he);	2200	ANHE_at_cache (*he);
2123	}	2201	}
2124	}	2202	}
2125		2203
2126	/* fetch new monotonic and realtime times from the kernel */	2204	/* fetch new monotonic and realtime times from the kernel */
2127	/* also detetc if there was a timejump, and act accordingly */	2205	/* also detect if there was a timejump, and act accordingly */
2128	inline_speed void	2206	inline_speed void
2129	time_update (EV_P_ ev_tstamp max_block)	2207	time_update (EV_P_ ev_tstamp max_block)
2130	{	2208	{
2131	#if EV_USE_MONOTONIC	2209	#if EV_USE_MONOTONIC
2132	if (expect_true (have_monotonic))	2210	if (expect_true (have_monotonic))
…		…
2192	}	2270	}
2193		2271
2194	void	2272	void
2195	ev_loop (EV_P_ int flags)	2273	ev_loop (EV_P_ int flags)
2196	{	2274	{
2197	#if EV_MINIMAL < 2	2275	#if EV_FEATURE_API
2198	++loop_depth;	2276	++loop_depth;
2199	#endif	2277	#endif
2200		2278
2201	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2279	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2202		2280
…		…
2205	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2283	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2206		2284
2207	do	2285	do
2208	{	2286	{
2209	#if EV_VERIFY >= 2	2287	#if EV_VERIFY >= 2
2210	ev_loop_verify (EV_A);	2288	ev_verify (EV_A);
2211	#endif	2289	#endif
2212		2290
2213	#ifndef _WIN32	2291	#ifndef _WIN32
2214	if (expect_false (curpid)) /* penalise the forking check even more */	2292	if (expect_false (curpid)) /* penalise the forking check even more */
2215	if (expect_false (getpid () != curpid))	2293	if (expect_false (getpid () != curpid))
…		…
2227	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2305	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2228	EV_INVOKE_PENDING;	2306	EV_INVOKE_PENDING;
2229	}	2307	}
2230	#endif	2308	#endif
2231		2309
		2310	#if EV_PREPARE_ENABLE
2232	/* queue prepare watchers (and execute them) */	2311	/* queue prepare watchers (and execute them) */
2233	if (expect_false (preparecnt))	2312	if (expect_false (preparecnt))
2234	{	2313	{
2235	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2314	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2236	EV_INVOKE_PENDING;	2315	EV_INVOKE_PENDING;
2237	}	2316	}
		2317	#endif
2238		2318
2239	if (expect_false (loop_done))	2319	if (expect_false (loop_done))
2240	break;	2320	break;
2241		2321
2242	/* we might have forked, so reify kernel state if necessary */	2322	/* we might have forked, so reify kernel state if necessary */
…		…
2293	waittime -= sleeptime;	2373	waittime -= sleeptime;
2294	}	2374	}
2295	}	2375	}
2296	}	2376	}
2297		2377
2298	#if EV_MINIMAL < 2	2378	#if EV_FEATURE_API
2299	++loop_count;	2379	++loop_count;
2300	#endif	2380	#endif
2301	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2381	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2302	backend_poll (EV_A_ waittime);	2382	backend_poll (EV_A_ waittime);
2303	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2383	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
…		…
2315	#if EV_IDLE_ENABLE	2395	#if EV_IDLE_ENABLE
2316	/* queue idle watchers unless other events are pending */	2396	/* queue idle watchers unless other events are pending */
2317	idle_reify (EV_A);	2397	idle_reify (EV_A);
2318	#endif	2398	#endif
2319		2399
		2400	#if EV_CHECK_ENABLE
2320	/* queue check watchers, to be executed first */	2401	/* queue check watchers, to be executed first */
2321	if (expect_false (checkcnt))	2402	if (expect_false (checkcnt))
2322	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2403	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2404	#endif
2323		2405
2324	EV_INVOKE_PENDING;	2406	EV_INVOKE_PENDING;
2325	}	2407	}
2326	while (expect_true (	2408	while (expect_true (
2327	activecnt	2409	activecnt
…		…
2330	));	2412	));
2331		2413
2332	if (loop_done == EVUNLOOP_ONE)	2414	if (loop_done == EVUNLOOP_ONE)
2333	loop_done = EVUNLOOP_CANCEL;	2415	loop_done = EVUNLOOP_CANCEL;
2334		2416
2335	#if EV_MINIMAL < 2	2417	#if EV_FEATURE_API
2336	--loop_depth;	2418	--loop_depth;
2337	#endif	2419	#endif
2338	}	2420	}
2339		2421
2340	void	2422	void
…		…
2393	inline_size void	2475	inline_size void
2394	wlist_del (WL *head, WL elem)	2476	wlist_del (WL *head, WL elem)
2395	{	2477	{
2396	while (*head)	2478	while (*head)
2397	{	2479	{
2398	if (*head == elem)	2480	if (expect_true (*head == elem))
2399	{	2481	{
2400	*head = elem->next;	2482	*head = elem->next;
2401	return;	2483	break;
2402	}	2484	}
2403		2485
2404	head = &(*head)->next;	2486	head = &(*head)->next;
2405	}	2487	}
2406	}	2488	}
…		…
2466		2548
2467	if (expect_false (ev_is_active (w)))	2549	if (expect_false (ev_is_active (w)))
2468	return;	2550	return;
2469		2551
2470	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2552	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2471	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2553	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2472		2554
2473	EV_FREQUENT_CHECK;	2555	EV_FREQUENT_CHECK;
2474		2556
2475	ev_start (EV_A_ (W)w, 1);	2557	ev_start (EV_A_ (W)w, 1);
2476	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2558	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2546	timers [active] = timers [timercnt + HEAP0];	2628	timers [active] = timers [timercnt + HEAP0];
2547	adjustheap (timers, timercnt, active);	2629	adjustheap (timers, timercnt, active);
2548	}	2630	}
2549	}	2631	}
2550		2632
2551	EV_FREQUENT_CHECK;
2552
2553	ev_at (w) -= mn_now;	2633	ev_at (w) -= mn_now;
2554		2634
2555	ev_stop (EV_A_ (W)w);	2635	ev_stop (EV_A_ (W)w);
		2636
		2637	EV_FREQUENT_CHECK;
2556	}	2638	}
2557		2639
2558	void noinline	2640	void noinline
2559	ev_timer_again (EV_P_ ev_timer *w)	2641	ev_timer_again (EV_P_ ev_timer *w)
2560	{	2642	{
…		…
2639	periodics [active] = periodics [periodiccnt + HEAP0];	2721	periodics [active] = periodics [periodiccnt + HEAP0];
2640	adjustheap (periodics, periodiccnt, active);	2722	adjustheap (periodics, periodiccnt, active);
2641	}	2723	}
2642	}	2724	}
2643		2725
2644	EV_FREQUENT_CHECK;
2645
2646	ev_stop (EV_A_ (W)w);	2726	ev_stop (EV_A_ (W)w);
		2727
		2728	EV_FREQUENT_CHECK;
2647	}	2729	}
2648		2730
2649	void noinline	2731	void noinline
2650	ev_periodic_again (EV_P_ ev_periodic *w)	2732	ev_periodic_again (EV_P_ ev_periodic *w)
2651	{	2733	{
…		…
2657		2739
2658	#ifndef SA_RESTART	2740	#ifndef SA_RESTART
2659	# define SA_RESTART 0	2741	# define SA_RESTART 0
2660	#endif	2742	#endif
2661		2743
		2744	#if EV_SIGNAL_ENABLE
		2745
2662	void noinline	2746	void noinline
2663	ev_signal_start (EV_P_ ev_signal *w)	2747	ev_signal_start (EV_P_ ev_signal *w)
2664	{	2748	{
2665	if (expect_false (ev_is_active (w)))	2749	if (expect_false (ev_is_active (w)))
2666	return;	2750	return;
2667		2751
2668	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));	2752	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2669		2753
2670	#if EV_MULTIPLICITY	2754	#if EV_MULTIPLICITY
2671	assert (("libev: tried to attach to a signal from two different loops",	2755	assert (("libev: a signal must not be attached to two different loops",
2672	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));	2756	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2673		2757
2674	signals [w->signum - 1].loop = EV_A;	2758	signals [w->signum - 1].loop = EV_A;
2675	#endif	2759	#endif
2676		2760
…		…
2712	if (!((WL)w)->next)	2796	if (!((WL)w)->next)
2713	# if EV_USE_SIGNALFD	2797	# if EV_USE_SIGNALFD
2714	if (sigfd < 0) /*TODO*/	2798	if (sigfd < 0) /*TODO*/
2715	# endif	2799	# endif
2716	{	2800	{
2717	# if _WIN32	2801	# ifdef _WIN32
		2802	evpipe_init (EV_A);
		2803
2718	signal (w->signum, ev_sighandler);	2804	signal (w->signum, ev_sighandler);
2719	# else	2805	# else
2720	struct sigaction sa;	2806	struct sigaction sa;
2721		2807
2722	evpipe_init (EV_A);	2808	evpipe_init (EV_A);
…		…
2747	wlist_del (&signals [w->signum - 1].head, (WL)w);	2833	wlist_del (&signals [w->signum - 1].head, (WL)w);
2748	ev_stop (EV_A_ (W)w);	2834	ev_stop (EV_A_ (W)w);
2749		2835
2750	if (!signals [w->signum - 1].head)	2836	if (!signals [w->signum - 1].head)
2751	{	2837	{
2752	#if EV_MULTIPLICITY	2838	#if EV_MULTIPLICITY
2753	signals [w->signum - 1].loop = 0; /* unattach from signal */	2839	signals [w->signum - 1].loop = 0; /* unattach from signal */
2754	#endif	2840	#endif
2755	#if EV_USE_SIGNALFD	2841	#if EV_USE_SIGNALFD
2756	if (sigfd >= 0)	2842	if (sigfd >= 0)
2757	{	2843	{
2758	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2844	sigset_t ss;
		2845
		2846	sigemptyset (&ss);
		2847	sigaddset (&ss, w->signum);
2759	sigdelset (&sigfd_set, w->signum);	2848	sigdelset (&sigfd_set, w->signum);
		2849
2760	signalfd (sigfd, &sigfd_set, 0);	2850	signalfd (sigfd, &sigfd_set, 0);
2761	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2851	sigprocmask (SIG_UNBLOCK, &ss, 0);
2762	/*TODO: maybe unblock signal? */
2763	}	2852	}
2764	else	2853	else
2765	#endif	2854	#endif
2766	signal (w->signum, SIG_DFL);	2855	signal (w->signum, SIG_DFL);
2767	}	2856	}
2768		2857
2769	EV_FREQUENT_CHECK;	2858	EV_FREQUENT_CHECK;
2770	}	2859	}
		2860
		2861	#endif
		2862
		2863	#if EV_CHILD_ENABLE
2771		2864
2772	void	2865	void
2773	ev_child_start (EV_P_ ev_child *w)	2866	ev_child_start (EV_P_ ev_child *w)
2774	{	2867	{
2775	#if EV_MULTIPLICITY	2868	#if EV_MULTIPLICITY
…		…
2779	return;	2872	return;
2780		2873
2781	EV_FREQUENT_CHECK;	2874	EV_FREQUENT_CHECK;
2782		2875
2783	ev_start (EV_A_ (W)w, 1);	2876	ev_start (EV_A_ (W)w, 1);
2784	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2877	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2785		2878
2786	EV_FREQUENT_CHECK;	2879	EV_FREQUENT_CHECK;
2787	}	2880	}
2788		2881
2789	void	2882	void
…		…
2793	if (expect_false (!ev_is_active (w)))	2886	if (expect_false (!ev_is_active (w)))
2794	return;	2887	return;
2795		2888
2796	EV_FREQUENT_CHECK;	2889	EV_FREQUENT_CHECK;
2797		2890
2798	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2891	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2799	ev_stop (EV_A_ (W)w);	2892	ev_stop (EV_A_ (W)w);
2800		2893
2801	EV_FREQUENT_CHECK;	2894	EV_FREQUENT_CHECK;
2802	}	2895	}
		2896
		2897	#endif
2803		2898
2804	#if EV_STAT_ENABLE	2899	#if EV_STAT_ENABLE
2805		2900
2806	# ifdef _WIN32	2901	# ifdef _WIN32
2807	# undef lstat	2902	# undef lstat
…		…
2813	#define MIN_STAT_INTERVAL 0.1074891	2908	#define MIN_STAT_INTERVAL 0.1074891
2814		2909
2815	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2910	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2816		2911
2817	#if EV_USE_INOTIFY	2912	#if EV_USE_INOTIFY
2818	# define EV_INOTIFY_BUFSIZE 8192	2913
		2914	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2915	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2819		2916
2820	static void noinline	2917	static void noinline
2821	infy_add (EV_P_ ev_stat *w)	2918	infy_add (EV_P_ ev_stat *w)
2822	{	2919	{
2823	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	2920	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
2824		2921
2825	if (w->wd < 0)	2922	if (w->wd >= 0)
		2923	{
		2924	struct statfs sfs;
		2925
		2926	/* now local changes will be tracked by inotify, but remote changes won't */
		2927	/* unless the filesystem is known to be local, we therefore still poll */
		2928	/* also do poll on <2.6.25, but with normal frequency */
		2929
		2930	if (!fs_2625)
		2931	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2932	else if (!statfs (w->path, &sfs)
		2933	&& (sfs.f_type == 0x1373 /* devfs */
		2934	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2935	|| sfs.f_type == 0x3153464a /* jfs */
		2936	|| sfs.f_type == 0x52654973 /* reiser3 */
		2937	|| sfs.f_type == 0x01021994 /* tempfs */
		2938	|| sfs.f_type == 0x58465342 /* xfs */))
		2939	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2940	else
		2941	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2826	{	2942	}
		2943	else
		2944	{
		2945	/* can't use inotify, continue to stat */
2827	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2946	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2828	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2829		2947
2830	/* monitor some parent directory for speedup hints */	2948	/* if path is not there, monitor some parent directory for speedup hints */
2831	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2949	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2832	/* but an efficiency issue only */	2950	/* but an efficiency issue only */
2833	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2951	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2834	{	2952	{
2835	char path [4096];	2953	char path [4096];
…		…
2851	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2969	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2852	}	2970	}
2853	}	2971	}
2854		2972
2855	if (w->wd >= 0)	2973	if (w->wd >= 0)
2856	{
2857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2974	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2858		2975
2859	/* now local changes will be tracked by inotify, but remote changes won't */	2976	/* now re-arm timer, if required */
2860	/* unless the filesystem it known to be local, we therefore still poll */	2977	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2861	/* also do poll on <2.6.25, but with normal frequency */
2862	struct statfs sfs;
2863
2864	if (fs_2625 && !statfs (w->path, &sfs))
2865	if (sfs.f_type == 0x1373 /* devfs */
2866	|| sfs.f_type == 0xEF53 /* ext2/3 */
2867	|| sfs.f_type == 0x3153464a /* jfs */
2868	|| sfs.f_type == 0x52654973 /* reiser3 */
2869	|| sfs.f_type == 0x01021994 /* tempfs */
2870	|| sfs.f_type == 0x58465342 /* xfs */)
2871	return;
2872
2873	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2874	ev_timer_again (EV_A_ &w->timer);	2978	ev_timer_again (EV_A_ &w->timer);
2875	}	2979	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2876	}	2980	}
2877		2981
2878	static void noinline	2982	static void noinline
2879	infy_del (EV_P_ ev_stat *w)	2983	infy_del (EV_P_ ev_stat *w)
2880	{	2984	{
…		…
2883		2987
2884	if (wd < 0)	2988	if (wd < 0)
2885	return;	2989	return;
2886		2990
2887	w->wd = -2;	2991	w->wd = -2;
2888	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	2992	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2889	wlist_del (&fs_hash [slot].head, (WL)w);	2993	wlist_del (&fs_hash [slot].head, (WL)w);
2890		2994
2891	/* remove this watcher, if others are watching it, they will rearm */	2995	/* remove this watcher, if others are watching it, they will rearm */
2892	inotify_rm_watch (fs_fd, wd);	2996	inotify_rm_watch (fs_fd, wd);
2893	}	2997	}
…		…
2895	static void noinline	2999	static void noinline
2896	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3000	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2897	{	3001	{
2898	if (slot < 0)	3002	if (slot < 0)
2899	/* overflow, need to check for all hash slots */	3003	/* overflow, need to check for all hash slots */
2900	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3004	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2901	infy_wd (EV_A_ slot, wd, ev);	3005	infy_wd (EV_A_ slot, wd, ev);
2902	else	3006	else
2903	{	3007	{
2904	WL w_;	3008	WL w_;
2905		3009
2906	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3010	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2907	{	3011	{
2908	ev_stat *w = (ev_stat *)w_;	3012	ev_stat *w = (ev_stat *)w_;
2909	w_ = w_->next; /* lets us remove this watcher and all before it */	3013	w_ = w_->next; /* lets us remove this watcher and all before it */
2910		3014
2911	if (w->wd == wd || wd == -1)	3015	if (w->wd == wd || wd == -1)
2912	{	3016	{
2913	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3017	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2914	{	3018	{
2915	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3019	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2916	w->wd = -1;	3020	w->wd = -1;
2917	infy_add (EV_A_ w); /* re-add, no matter what */	3021	infy_add (EV_A_ w); /* re-add, no matter what */
2918	}	3022	}
2919		3023
2920	stat_timer_cb (EV_A_ &w->timer, 0);	3024	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2925		3029
2926	static void	3030	static void
2927	infy_cb (EV_P_ ev_io *w, int revents)	3031	infy_cb (EV_P_ ev_io *w, int revents)
2928	{	3032	{
2929	char buf [EV_INOTIFY_BUFSIZE];	3033	char buf [EV_INOTIFY_BUFSIZE];
2930	struct inotify_event *ev = (struct inotify_event *)buf;
2931	int ofs;	3034	int ofs;
2932	int len = read (fs_fd, buf, sizeof (buf));	3035	int len = read (fs_fd, buf, sizeof (buf));
2933		3036
2934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3037	for (ofs = 0; ofs < len; )
		3038	{
		3039	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2935	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3040	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3041	ofs += sizeof (struct inotify_event) + ev->len;
		3042	}
		3043	}
		3044
		3045	inline_size unsigned int
		3046	ev_linux_version (void)
		3047	{
		3048	struct utsname buf;
		3049	unsigned int v;
		3050	int i;
		3051	char *p = buf.release;
		3052
		3053	if (uname (&buf))
		3054	return 0;
		3055
		3056	for (i = 3+1; --i; )
		3057	{
		3058	unsigned int c = 0;
		3059
		3060	for (;;)
		3061	{
		3062	if (*p >= '0' && *p <= '9')
		3063	c = c * 10 + *p++ - '0';
		3064	else
		3065	{
		3066	p += *p == '.';
		3067	break;
		3068	}
		3069	}
		3070
		3071	v = (v << 8) | c;
		3072	}
		3073
		3074	return v;
2936	}	3075	}
2937		3076
2938	inline_size void	3077	inline_size void
2939	check_2625 (EV_P)	3078	ev_check_2625 (EV_P)
2940	{	3079	{
2941	/* kernels < 2.6.25 are borked	3080	/* kernels < 2.6.25 are borked
2942	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3081	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2943	*/	3082	*/
2944	struct utsname buf;	3083	if (ev_linux_version () < 0x020619)
2945	int major, minor, micro;
2946
2947	if (uname (&buf))
2948	return;	3084	return;
2949		3085
2950	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2951	return;
2952
2953	if (major < 2
2954	|| (major == 2 && minor < 6)
2955	|| (major == 2 && minor == 6 && micro < 25))
2956	return;
2957
2958	fs_2625 = 1;	3086	fs_2625 = 1;
		3087	}
		3088
		3089	inline_size int
		3090	infy_newfd (void)
		3091	{
		3092	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3093	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3094	if (fd >= 0)
		3095	return fd;
		3096	#endif
		3097	return inotify_init ();
2959	}	3098	}
2960		3099
2961	inline_size void	3100	inline_size void
2962	infy_init (EV_P)	3101	infy_init (EV_P)
2963	{	3102	{
2964	if (fs_fd != -2)	3103	if (fs_fd != -2)
2965	return;	3104	return;
2966		3105
2967	fs_fd = -1;	3106	fs_fd = -1;
2968		3107
2969	check_2625 (EV_A);	3108	ev_check_2625 (EV_A);
2970		3109
2971	fs_fd = inotify_init ();	3110	fs_fd = infy_newfd ();
2972		3111
2973	if (fs_fd >= 0)	3112	if (fs_fd >= 0)
2974	{	3113	{
		3114	fd_intern (fs_fd);
2975	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3115	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2976	ev_set_priority (&fs_w, EV_MAXPRI);	3116	ev_set_priority (&fs_w, EV_MAXPRI);
2977	ev_io_start (EV_A_ &fs_w);	3117	ev_io_start (EV_A_ &fs_w);
		3118	ev_unref (EV_A);
2978	}	3119	}
2979	}	3120	}
2980		3121
2981	inline_size void	3122	inline_size void
2982	infy_fork (EV_P)	3123	infy_fork (EV_P)
…		…
2984	int slot;	3125	int slot;
2985		3126
2986	if (fs_fd < 0)	3127	if (fs_fd < 0)
2987	return;	3128	return;
2988		3129
		3130	ev_ref (EV_A);
		3131	ev_io_stop (EV_A_ &fs_w);
2989	close (fs_fd);	3132	close (fs_fd);
2990	fs_fd = inotify_init ();	3133	fs_fd = infy_newfd ();
2991		3134
		3135	if (fs_fd >= 0)
		3136	{
		3137	fd_intern (fs_fd);
		3138	ev_io_set (&fs_w, fs_fd, EV_READ);
		3139	ev_io_start (EV_A_ &fs_w);
		3140	ev_unref (EV_A);
		3141	}
		3142
2992	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3143	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2993	{	3144	{
2994	WL w_ = fs_hash [slot].head;	3145	WL w_ = fs_hash [slot].head;
2995	fs_hash [slot].head = 0;	3146	fs_hash [slot].head = 0;
2996		3147
2997	while (w_)	3148	while (w_)
…		…
3002	w->wd = -1;	3153	w->wd = -1;
3003		3154
3004	if (fs_fd >= 0)	3155	if (fs_fd >= 0)
3005	infy_add (EV_A_ w); /* re-add, no matter what */	3156	infy_add (EV_A_ w); /* re-add, no matter what */
3006	else	3157	else
		3158	{
		3159	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3160	if (ev_is_active (&w->timer)) ev_ref (EV_A);
3007	ev_timer_again (EV_A_ &w->timer);	3161	ev_timer_again (EV_A_ &w->timer);
		3162	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3163	}
3008	}	3164	}
3009	}	3165	}
3010	}	3166	}
3011		3167
3012	#endif	3168	#endif
…		…
3029	static void noinline	3185	static void noinline
3030	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3186	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3031	{	3187	{
3032	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3188	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3033		3189
3034	/* we copy this here each the time so that */	3190	ev_statdata prev = w->attr;
3035	/* prev has the old value when the callback gets invoked */
3036	w->prev = w->attr;
3037	ev_stat_stat (EV_A_ w);	3191	ev_stat_stat (EV_A_ w);
3038		3192
3039	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3193	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3040	if (	3194	if (
3041	w->prev.st_dev != w->attr.st_dev	3195	prev.st_dev != w->attr.st_dev
3042	|| w->prev.st_ino != w->attr.st_ino	3196	|| prev.st_ino != w->attr.st_ino
3043	|| w->prev.st_mode != w->attr.st_mode	3197	|| prev.st_mode != w->attr.st_mode
3044	|| w->prev.st_nlink != w->attr.st_nlink	3198	|| prev.st_nlink != w->attr.st_nlink
3045	|| w->prev.st_uid != w->attr.st_uid	3199	|| prev.st_uid != w->attr.st_uid
3046	|| w->prev.st_gid != w->attr.st_gid	3200	|| prev.st_gid != w->attr.st_gid
3047	|| w->prev.st_rdev != w->attr.st_rdev	3201	|| prev.st_rdev != w->attr.st_rdev
3048	|| w->prev.st_size != w->attr.st_size	3202	|| prev.st_size != w->attr.st_size
3049	|| w->prev.st_atime != w->attr.st_atime	3203	|| prev.st_atime != w->attr.st_atime
3050	|| w->prev.st_mtime != w->attr.st_mtime	3204	|| prev.st_mtime != w->attr.st_mtime
3051	|| w->prev.st_ctime != w->attr.st_ctime	3205	|| prev.st_ctime != w->attr.st_ctime
3052	) {	3206	) {
		3207	/* we only update w->prev on actual differences */
		3208	/* in case we test more often than invoke the callback, */
		3209	/* to ensure that prev is always different to attr */
		3210	w->prev = prev;
		3211
3053	#if EV_USE_INOTIFY	3212	#if EV_USE_INOTIFY
3054	if (fs_fd >= 0)	3213	if (fs_fd >= 0)
3055	{	3214	{
3056	infy_del (EV_A_ w);	3215	infy_del (EV_A_ w);
3057	infy_add (EV_A_ w);	3216	infy_add (EV_A_ w);
…		…
3082		3241
3083	if (fs_fd >= 0)	3242	if (fs_fd >= 0)
3084	infy_add (EV_A_ w);	3243	infy_add (EV_A_ w);
3085	else	3244	else
3086	#endif	3245	#endif
		3246	{
3087	ev_timer_again (EV_A_ &w->timer);	3247	ev_timer_again (EV_A_ &w->timer);
		3248	ev_unref (EV_A);
		3249	}
3088		3250
3089	ev_start (EV_A_ (W)w, 1);	3251	ev_start (EV_A_ (W)w, 1);
3090		3252
3091	EV_FREQUENT_CHECK;	3253	EV_FREQUENT_CHECK;
3092	}	3254	}
…		…
3101	EV_FREQUENT_CHECK;	3263	EV_FREQUENT_CHECK;
3102		3264
3103	#if EV_USE_INOTIFY	3265	#if EV_USE_INOTIFY
3104	infy_del (EV_A_ w);	3266	infy_del (EV_A_ w);
3105	#endif	3267	#endif
		3268
		3269	if (ev_is_active (&w->timer))
		3270	{
		3271	ev_ref (EV_A);
3106	ev_timer_stop (EV_A_ &w->timer);	3272	ev_timer_stop (EV_A_ &w->timer);
		3273	}
3107		3274
3108	ev_stop (EV_A_ (W)w);	3275	ev_stop (EV_A_ (W)w);
3109		3276
3110	EV_FREQUENT_CHECK;	3277	EV_FREQUENT_CHECK;
3111	}	3278	}
…		…
3156		3323
3157	EV_FREQUENT_CHECK;	3324	EV_FREQUENT_CHECK;
3158	}	3325	}
3159	#endif	3326	#endif
3160		3327
		3328	#if EV_PREPARE_ENABLE
3161	void	3329	void
3162	ev_prepare_start (EV_P_ ev_prepare *w)	3330	ev_prepare_start (EV_P_ ev_prepare *w)
3163	{	3331	{
3164	if (expect_false (ev_is_active (w)))	3332	if (expect_false (ev_is_active (w)))
3165	return;	3333	return;
…		…
3191		3359
3192	ev_stop (EV_A_ (W)w);	3360	ev_stop (EV_A_ (W)w);
3193		3361
3194	EV_FREQUENT_CHECK;	3362	EV_FREQUENT_CHECK;
3195	}	3363	}
		3364	#endif
3196		3365
		3366	#if EV_CHECK_ENABLE
3197	void	3367	void
3198	ev_check_start (EV_P_ ev_check *w)	3368	ev_check_start (EV_P_ ev_check *w)
3199	{	3369	{
3200	if (expect_false (ev_is_active (w)))	3370	if (expect_false (ev_is_active (w)))
3201	return;	3371	return;
…		…
3227		3397
3228	ev_stop (EV_A_ (W)w);	3398	ev_stop (EV_A_ (W)w);
3229		3399
3230	EV_FREQUENT_CHECK;	3400	EV_FREQUENT_CHECK;
3231	}	3401	}
		3402	#endif
3232		3403
3233	#if EV_EMBED_ENABLE	3404	#if EV_EMBED_ENABLE
3234	void noinline	3405	void noinline
3235	ev_embed_sweep (EV_P_ ev_embed *w)	3406	ev_embed_sweep (EV_P_ ev_embed *w)
3236	{	3407	{
…		…
3331		3502
3332	ev_io_stop (EV_A_ &w->io);	3503	ev_io_stop (EV_A_ &w->io);
3333	ev_prepare_stop (EV_A_ &w->prepare);	3504	ev_prepare_stop (EV_A_ &w->prepare);
3334	ev_fork_stop (EV_A_ &w->fork);	3505	ev_fork_stop (EV_A_ &w->fork);
3335		3506
		3507	ev_stop (EV_A_ (W)w);
		3508
3336	EV_FREQUENT_CHECK;	3509	EV_FREQUENT_CHECK;
3337	}	3510	}
3338	#endif	3511	#endif
3339		3512
3340	#if EV_FORK_ENABLE	3513	#if EV_FORK_ENABLE
…		…
3416		3589
3417	void	3590	void
3418	ev_async_send (EV_P_ ev_async *w)	3591	ev_async_send (EV_P_ ev_async *w)
3419	{	3592	{
3420	w->sent = 1;	3593	w->sent = 1;
3421	evpipe_write (EV_A_ &gotasync);	3594	evpipe_write (EV_A_ &async_pending);
3422	}	3595	}
3423	#endif	3596	#endif
3424		3597
3425	/*****************************************************************************/	3598	/*****************************************************************************/
3426		3599
…		…
3466	{	3639	{
3467	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3640	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3468		3641
3469	if (expect_false (!once))	3642	if (expect_false (!once))
3470	{	3643	{
3471	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3644	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3472	return;	3645	return;
3473	}	3646	}
3474		3647
3475	once->cb = cb;	3648	once->cb = cb;
3476	once->arg = arg;	3649	once->arg = arg;
…		…
3563	if (types & EV_ASYNC)	3736	if (types & EV_ASYNC)
3564	for (i = asynccnt; i--; )	3737	for (i = asynccnt; i--; )
3565	cb (EV_A_ EV_ASYNC, asyncs [i]);	3738	cb (EV_A_ EV_ASYNC, asyncs [i]);
3566	#endif	3739	#endif
3567		3740
		3741	#if EV_PREPARE_ENABLE
3568	if (types & EV_PREPARE)	3742	if (types & EV_PREPARE)
3569	for (i = preparecnt; i--; )	3743	for (i = preparecnt; i--; )
3570	#if EV_EMBED_ENABLE	3744	# if EV_EMBED_ENABLE
3571	if (ev_cb (prepares [i]) != embed_prepare_cb)	3745	if (ev_cb (prepares [i]) != embed_prepare_cb)
3572	#endif	3746	# endif
3573	cb (EV_A_ EV_PREPARE, prepares [i]);	3747	cb (EV_A_ EV_PREPARE, prepares [i]);
		3748	#endif
3574		3749
		3750	#if EV_CHECK_ENABLE
3575	if (types & EV_CHECK)	3751	if (types & EV_CHECK)
3576	for (i = checkcnt; i--; )	3752	for (i = checkcnt; i--; )
3577	cb (EV_A_ EV_CHECK, checks [i]);	3753	cb (EV_A_ EV_CHECK, checks [i]);
		3754	#endif
3578		3755
		3756	#if EV_SIGNAL_ENABLE
3579	if (types & EV_SIGNAL)	3757	if (types & EV_SIGNAL)
3580	for (i = 0; i < EV_NSIG - 1; ++i)	3758	for (i = 0; i < EV_NSIG - 1; ++i)
3581	for (wl = signals [i].head; wl; )	3759	for (wl = signals [i].head; wl; )
3582	{	3760	{
3583	wn = wl->next;	3761	wn = wl->next;
3584	cb (EV_A_ EV_SIGNAL, wl);	3762	cb (EV_A_ EV_SIGNAL, wl);
3585	wl = wn;	3763	wl = wn;
3586	}	3764	}
		3765	#endif
3587		3766
		3767	#if EV_CHILD_ENABLE
3588	if (types & EV_CHILD)	3768	if (types & EV_CHILD)
3589	for (i = EV_PID_HASHSIZE; i--; )	3769	for (i = (EV_PID_HASHSIZE); i--; )
3590	for (wl = childs [i]; wl; )	3770	for (wl = childs [i]; wl; )
3591	{	3771	{
3592	wn = wl->next;	3772	wn = wl->next;
3593	cb (EV_A_ EV_CHILD, wl);	3773	cb (EV_A_ EV_CHILD, wl);
3594	wl = wn;	3774	wl = wn;
3595	}	3775	}
		3776	#endif
3596	/* EV_STAT 0x00001000 /* stat data changed */	3777	/* EV_STAT 0x00001000 /* stat data changed */
3597	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3778	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3598	}	3779	}
3599	#endif	3780	#endif
3600		3781

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