[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.310 by root, Sun Jul 26 04:43:03 2009 UTC vs.
Revision 1.343 by root, Fri Apr 2 21:03:46 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
88	# endif
89
90	# ifndef EV_USE_SELECT
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
92	# define EV_USE_SELECT 1
93	# else	95	# else
		96	# undef EV_USE_SELECT
94	# define EV_USE_SELECT 0	97	# define EV_USE_SELECT 0
		98	# endif
		99
		100	# if HAVE_POLL && HAVE_POLL_H
		101	# ifndef EV_USE_POLL
		102	# define EV_USE_POLL EV_FEATURE_BACKENDS
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
		107	# endif
		108
		109	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		110	# ifndef EV_USE_EPOLL
		111	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
103	# endif	112	# endif
		113	# else
		114	# undef EV_USE_EPOLL
		115	# define EV_USE_EPOLL 0
104	# endif	116	# endif
105		117
		118	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
106	# ifndef EV_USE_EPOLL	119	# ifndef EV_USE_KQUEUE
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	120	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
108	# define EV_USE_EPOLL 1
109	# else
110	# define EV_USE_EPOLL 0
111	# endif	121	# endif
		122	# else
		123	# undef EV_USE_KQUEUE
		124	# define EV_USE_KQUEUE 0
112	# endif	125	# endif
113		126
114	# ifndef EV_USE_KQUEUE	127	# if HAVE_PORT_H && HAVE_PORT_CREATE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	128	# ifndef EV_USE_PORT
116	# define EV_USE_KQUEUE 1	129	# define EV_USE_PORT EV_FEATURE_BACKENDS
117	# else
118	# define EV_USE_KQUEUE 0
119	# endif	130	# endif
120	# endif
121
122	# ifndef EV_USE_PORT
123	# if HAVE_PORT_H && HAVE_PORT_CREATE
124	# define EV_USE_PORT 1
125	# else	131	# else
		132	# undef EV_USE_PORT
126	# define EV_USE_PORT 0	133	# define EV_USE_PORT 0
		134	# endif
		135
		136	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		137	# ifndef EV_USE_INOTIFY
		138	# define EV_USE_INOTIFY EV_FEATURE_OS
127	# endif	139	# endif
128	# endif
129
130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132	# define EV_USE_INOTIFY 1
133	# else	140	# else
		141	# undef EV_USE_INOTIFY
134	# define EV_USE_INOTIFY 0	142	# define EV_USE_INOTIFY 0
		143	# endif
		144
		145	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		146	# ifndef EV_USE_SIGNALFD
		147	# define EV_USE_SIGNALFD EV_FEATURE_OS
135	# endif	148	# endif
136	# endif
137
138	# ifndef EV_USE_SIGNALFD
139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140	# define EV_USE_SIGNALFD 1
141	# else	149	# else
		150	# undef EV_USE_SIGNALFD
142	# define EV_USE_SIGNALFD 0	151	# define EV_USE_SIGNALFD 0
		152	# endif
		153
		154	# if HAVE_EVENTFD
		155	# ifndef EV_USE_EVENTFD
		156	# define EV_USE_EVENTFD EV_FEATURE_OS
143	# endif	157	# endif
144	# endif
145
146	# ifndef EV_USE_EVENTFD
147	# if HAVE_EVENTFD
148	# define EV_USE_EVENTFD 1
149	# else	158	# else
		159	# undef EV_USE_EVENTFD
150	# define EV_USE_EVENTFD 0	160	# define EV_USE_EVENTFD 0
151	# endif
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
188		200
189	/* this block tries to deduce configuration from header-defined symbols and defaults */	201	/* this block tries to deduce configuration from header-defined symbols and defaults */
190		202
191	/* try to deduce the maximum number of signals on this platform */	203	/* try to deduce the maximum number of signals on this platform */
…		…
204	#elif defined (MAXSIG)	216	#elif defined (MAXSIG)
205	# define EV_NSIG (MAXSIG+1)	217	# define EV_NSIG (MAXSIG+1)
206	#elif defined (MAX_SIG)	218	#elif defined (MAX_SIG)
207	# define EV_NSIG (MAX_SIG+1)	219	# define EV_NSIG (MAX_SIG+1)
208	#elif defined (SIGARRAYSIZE)	220	#elif defined (SIGARRAYSIZE)
209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */	221	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210	#elif defined (_sys_nsig)	222	#elif defined (_sys_nsig)
211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	223	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212	#else	224	#else
213	# error "unable to find value for NSIG, please report"	225	# error "unable to find value for NSIG, please report"
214	/* to make it compile regardless, just remove the above line */	226	/* to make it compile regardless, just remove the above line, */
		227	/* but consider reporting it, too! :) */
215	# define EV_NSIG 65	228	# define EV_NSIG 65
216	#endif	229	#endif
217		230
218	#ifndef EV_USE_CLOCK_SYSCALL	231	#ifndef EV_USE_CLOCK_SYSCALL
219	# if __linux && __GLIBC__ >= 2	232	# if __linux && __GLIBC__ >= 2
220	# define EV_USE_CLOCK_SYSCALL 1	233	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
221	# else	234	# else
222	# define EV_USE_CLOCK_SYSCALL 0	235	# define EV_USE_CLOCK_SYSCALL 0
223	# endif	236	# endif
224	#endif	237	#endif
225		238
226	#ifndef EV_USE_MONOTONIC	239	#ifndef EV_USE_MONOTONIC
227	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	240	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
228	# define EV_USE_MONOTONIC 1	241	# define EV_USE_MONOTONIC EV_FEATURE_OS
229	# else	242	# else
230	# define EV_USE_MONOTONIC 0	243	# define EV_USE_MONOTONIC 0
231	# endif	244	# endif
232	#endif	245	#endif
233		246
…		…
235	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	248	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
236	#endif	249	#endif
237		250
238	#ifndef EV_USE_NANOSLEEP	251	#ifndef EV_USE_NANOSLEEP
239	# if _POSIX_C_SOURCE >= 199309L	252	# if _POSIX_C_SOURCE >= 199309L
240	# define EV_USE_NANOSLEEP 1	253	# define EV_USE_NANOSLEEP EV_FEATURE_OS
241	# else	254	# else
242	# define EV_USE_NANOSLEEP 0	255	# define EV_USE_NANOSLEEP 0
243	# endif	256	# endif
244	#endif	257	#endif
245		258
246	#ifndef EV_USE_SELECT	259	#ifndef EV_USE_SELECT
247	# define EV_USE_SELECT 1	260	# define EV_USE_SELECT EV_FEATURE_BACKENDS
248	#endif	261	#endif
249		262
250	#ifndef EV_USE_POLL	263	#ifndef EV_USE_POLL
251	# ifdef _WIN32	264	# ifdef _WIN32
252	# define EV_USE_POLL 0	265	# define EV_USE_POLL 0
253	# else	266	# else
254	# define EV_USE_POLL 1	267	# define EV_USE_POLL EV_FEATURE_BACKENDS
255	# endif	268	# endif
256	#endif	269	#endif
257		270
258	#ifndef EV_USE_EPOLL	271	#ifndef EV_USE_EPOLL
259	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	272	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
260	# define EV_USE_EPOLL 1	273	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
261	# else	274	# else
262	# define EV_USE_EPOLL 0	275	# define EV_USE_EPOLL 0
263	# endif	276	# endif
264	#endif	277	#endif
265		278
…		…
271	# define EV_USE_PORT 0	284	# define EV_USE_PORT 0
272	#endif	285	#endif
273		286
274	#ifndef EV_USE_INOTIFY	287	#ifndef EV_USE_INOTIFY
275	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	288	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
276	# define EV_USE_INOTIFY 1	289	# define EV_USE_INOTIFY EV_FEATURE_OS
277	# else	290	# else
278	# define EV_USE_INOTIFY 0	291	# define EV_USE_INOTIFY 0
279	# endif	292	# endif
280	#endif	293	#endif
281		294
282	#ifndef EV_PID_HASHSIZE	295	#ifndef EV_PID_HASHSIZE
283	# if EV_MINIMAL	296	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
284	# define EV_PID_HASHSIZE 1
285	# else
286	# define EV_PID_HASHSIZE 16
287	# endif
288	#endif	297	#endif
289		298
290	#ifndef EV_INOTIFY_HASHSIZE	299	#ifndef EV_INOTIFY_HASHSIZE
291	# if EV_MINIMAL	300	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
292	# define EV_INOTIFY_HASHSIZE 1
293	# else
294	# define EV_INOTIFY_HASHSIZE 16
295	# endif
296	#endif	301	#endif
297		302
298	#ifndef EV_USE_EVENTFD	303	#ifndef EV_USE_EVENTFD
299	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	304	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
300	# define EV_USE_EVENTFD 1	305	# define EV_USE_EVENTFD EV_FEATURE_OS
301	# else	306	# else
302	# define EV_USE_EVENTFD 0	307	# define EV_USE_EVENTFD 0
303	# endif	308	# endif
304	#endif	309	#endif
305		310
306	#ifndef EV_USE_SIGNALFD	311	#ifndef EV_USE_SIGNALFD
307	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	312	# if __linux && (__GLIBC__ > 2 \|\| (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
308	# define EV_USE_SIGNALFD 1	313	# define EV_USE_SIGNALFD EV_FEATURE_OS
309	# else	314	# else
310	# define EV_USE_SIGNALFD 0	315	# define EV_USE_SIGNALFD 0
311	# endif	316	# endif
312	#endif	317	#endif
313		318
…		…
316	# define EV_USE_4HEAP 1	321	# define EV_USE_4HEAP 1
317	# define EV_HEAP_CACHE_AT 1	322	# define EV_HEAP_CACHE_AT 1
318	#endif	323	#endif
319		324
320	#ifndef EV_VERIFY	325	#ifndef EV_VERIFY
321	# define EV_VERIFY !EV_MINIMAL	326	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
322	#endif	327	#endif
323		328
324	#ifndef EV_USE_4HEAP	329	#ifndef EV_USE_4HEAP
325	# define EV_USE_4HEAP !EV_MINIMAL	330	# define EV_USE_4HEAP EV_FEATURE_DATA
326	#endif	331	#endif
327		332
328	#ifndef EV_HEAP_CACHE_AT	333	#ifndef EV_HEAP_CACHE_AT
329	# define EV_HEAP_CACHE_AT !EV_MINIMAL	334	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
330	#endif	335	#endif
331		336
332	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	337	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
333	/* which makes programs even slower. might work on other unices, too. */	338	/* which makes programs even slower. might work on other unices, too. */
334	#if EV_USE_CLOCK_SYSCALL	339	#if EV_USE_CLOCK_SYSCALL
…		…
343	# endif	348	# endif
344	#endif	349	#endif
345		350
346	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	351	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
347		352
		353	#ifdef _AIX
		354	/* AIX has a completely broken poll.h header */
		355	# undef EV_USE_POLL
		356	# define EV_USE_POLL 0
		357	#endif
		358
348	#ifndef CLOCK_MONOTONIC	359	#ifndef CLOCK_MONOTONIC
349	# undef EV_USE_MONOTONIC	360	# undef EV_USE_MONOTONIC
350	# define EV_USE_MONOTONIC 0	361	# define EV_USE_MONOTONIC 0
351	#endif	362	#endif
352		363
…		…
386	# include <stdint.h>	397	# include <stdint.h>
387	# ifndef EFD_NONBLOCK	398	# ifndef EFD_NONBLOCK
388	# define EFD_NONBLOCK O_NONBLOCK	399	# define EFD_NONBLOCK O_NONBLOCK
389	# endif	400	# endif
390	# ifndef EFD_CLOEXEC	401	# ifndef EFD_CLOEXEC
		402	# ifdef O_CLOEXEC
391	# define EFD_CLOEXEC O_CLOEXEC	403	# define EFD_CLOEXEC O_CLOEXEC
		404	# else
		405	# define EFD_CLOEXEC 02000000
		406	# endif
392	# endif	407	# endif
393	# ifdef __cplusplus	408	# ifdef __cplusplus
394	extern "C" {	409	extern "C" {
395	# endif	410	# endif
396	int eventfd (unsigned int initval, int flags);	411	int (eventfd) (unsigned int initval, int flags);
397	# ifdef __cplusplus	412	# ifdef __cplusplus
398	}	413	}
399	# endif	414	# endif
400	#endif	415	#endif
401		416
402	#if EV_USE_SIGNALFD	417	#if EV_USE_SIGNALFD
403	# include <sys/signalfd.h>	418	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		419	# include <stdint.h>
		420	# ifndef SFD_NONBLOCK
		421	# define SFD_NONBLOCK O_NONBLOCK
404	#endif	422	# endif
		423	# ifndef SFD_CLOEXEC
		424	# ifdef O_CLOEXEC
		425	# define SFD_CLOEXEC O_CLOEXEC
		426	# else
		427	# define SFD_CLOEXEC 02000000
		428	# endif
		429	# endif
		430	# ifdef __cplusplus
		431	extern "C" {
		432	# endif
		433	int signalfd (int fd, const sigset_t *mask, int flags);
		434
		435	struct signalfd_siginfo
		436	{
		437	uint32_t ssi_signo;
		438	char pad[128 - sizeof (uint32_t)];
		439	};
		440	# ifdef __cplusplus
		441	}
		442	# endif
		443	#endif
		444
405		445
406	/**/	446	/**/
407		447
408	#if EV_VERIFY >= 3	448	#if EV_VERIFY >= 3
409	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	449	# define EV_FREQUENT_CHECK ev_verify (EV_A)
410	#else	450	#else
411	# define EV_FREQUENT_CHECK do { } while (0)	451	# define EV_FREQUENT_CHECK do { } while (0)
412	#endif	452	#endif
413		453
414	/*	454	/*
…		…
421	*/	461	*/
422	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	462	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
423		463
424	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	464	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
425	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	465	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
426	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds, TODO */
427		466
428	#if __GNUC__ >= 4	467	#if __GNUC__ >= 4
429	# define expect(expr,value) __builtin_expect ((expr),(value))	468	# define expect(expr,value) __builtin_expect ((expr),(value))
430	# define noinline __attribute__ ((noinline))	469	# define noinline __attribute__ ((noinline))
431	#else	470	#else
…		…
438		477
439	#define expect_false(expr) expect ((expr) != 0, 0)	478	#define expect_false(expr) expect ((expr) != 0, 0)
440	#define expect_true(expr) expect ((expr) != 0, 1)	479	#define expect_true(expr) expect ((expr) != 0, 1)
441	#define inline_size static inline	480	#define inline_size static inline
442		481
443	#if EV_MINIMAL	482	#if EV_FEATURE_CODE
		483	# define inline_speed static inline
		484	#else
444	# define inline_speed static noinline	485	# define inline_speed static noinline
445	#else
446	# define inline_speed static inline
447	#endif	486	#endif
448		487
449	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	488	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
450		489
451	#if EV_MINPRI == EV_MAXPRI	490	#if EV_MINPRI == EV_MAXPRI
…		…
472		511
473	#if EV_USE_MONOTONIC	512	#if EV_USE_MONOTONIC
474	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	513	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
475	#endif	514	#endif
476		515
		516	#ifndef EV_FD_TO_WIN32_HANDLE
		517	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		518	#endif
		519	#ifndef EV_WIN32_HANDLE_TO_FD
		520	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		521	#endif
		522	#ifndef EV_WIN32_CLOSE_FD
		523	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		524	#endif
		525
477	#ifdef _WIN32	526	#ifdef _WIN32
478	# include "ev_win32.c"	527	# include "ev_win32.c"
479	#endif	528	#endif
480		529
481	/*****************************************************************************/	530	/*****************************************************************************/
		531
		532	#if EV_AVOID_STDIO
		533	static void noinline
		534	ev_printerr (const char *msg)
		535	{
		536	write (STDERR_FILENO, msg, strlen (msg));
		537	}
		538	#endif
482		539
483	static void (syserr_cb)(const char msg);	540	static void (syserr_cb)(const char msg);
484		541
485	void	542	void
486	ev_set_syserr_cb (void (cb)(const char msg))	543	ev_set_syserr_cb (void (cb)(const char msg))
…		…
496		553
497	if (syserr_cb)	554	if (syserr_cb)
498	syserr_cb (msg);	555	syserr_cb (msg);
499	else	556	else
500	{	557	{
		558	#if EV_AVOID_STDIO
		559	const char *err = strerror (errno);
		560
		561	ev_printerr (msg);
		562	ev_printerr (": ");
		563	ev_printerr (err);
		564	ev_printerr ("\n");
		565	#else
501	perror (msg);	566	perror (msg);
		567	#endif
502	abort ();	568	abort ();
503	}	569	}
504	}	570	}
505		571
506	static void *	572	static void *
507	ev_realloc_emul (void *ptr, long size)	573	ev_realloc_emul (void *ptr, long size)
508	{	574	{
		575	#if __GLIBC__
		576	return realloc (ptr, size);
		577	#else
509	/* some systems, notably openbsd and darwin, fail to properly	578	/* some systems, notably openbsd and darwin, fail to properly
510	* implement realloc (x, 0) (as required by both ansi c-98 and	579	* implement realloc (x, 0) (as required by both ansi c-89 and
511	* the single unix specification, so work around them here.	580	* the single unix specification, so work around them here.
512	*/	581	*/
513		582
514	if (size)	583	if (size)
515	return realloc (ptr, size);	584	return realloc (ptr, size);
516		585
517	free (ptr);	586	free (ptr);
518	return 0;	587	return 0;
		588	#endif
519	}	589	}
520		590
521	static void (alloc)(void *ptr, long size) = ev_realloc_emul;	591	static void (alloc)(void *ptr, long size) = ev_realloc_emul;
522		592
523	void	593	void
…		…
531	{	601	{
532	ptr = alloc (ptr, size);	602	ptr = alloc (ptr, size);
533		603
534	if (!ptr && size)	604	if (!ptr && size)
535	{	605	{
		606	#if EV_AVOID_STDIO
		607	ev_printerr ("libev: memory allocation failed, aborting.\n");
		608	#else
536	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	609	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		610	#endif
537	abort ();	611	abort ();
538	}	612	}
539		613
540	return ptr;	614	return ptr;
541	}	615	}
…		…
623		697
624	static int ev_default_loop_ptr;	698	static int ev_default_loop_ptr;
625		699
626	#endif	700	#endif
627		701
628	#if EV_MINIMAL < 2	702	#if EV_FEATURE_API
629	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)	703	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
630	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)	704	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
631	# define EV_INVOKE_PENDING invoke_cb (EV_A)	705	# define EV_INVOKE_PENDING invoke_cb (EV_A)
632	#else	706	#else
633	# define EV_RELEASE_CB (void)0	707	# define EV_RELEASE_CB (void)0
…		…
818	}	892	}
819		893
820	/*****************************************************************************/	894	/*****************************************************************************/
821		895
822	inline_speed void	896	inline_speed void
823	fd_event_nc (EV_P_ int fd, int revents)	897	fd_event_nocheck (EV_P_ int fd, int revents)
824	{	898	{
825	ANFD *anfd = anfds + fd;	899	ANFD *anfd = anfds + fd;
826	ev_io *w;	900	ev_io *w;
827		901
828	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)	902	for (w = (ev_io )anfd->head; w; w = (ev_io )((WL)w)->next)
…		…
840	fd_event (EV_P_ int fd, int revents)	914	fd_event (EV_P_ int fd, int revents)
841	{	915	{
842	ANFD *anfd = anfds + fd;	916	ANFD *anfd = anfds + fd;
843		917
844	if (expect_true (!anfd->reify))	918	if (expect_true (!anfd->reify))
845	fd_event_nc (EV_A_ fd, revents);	919	fd_event_nocheck (EV_A_ fd, revents);
846	}	920	}
847		921
848	void	922	void
849	ev_feed_fd_event (EV_P_ int fd, int revents)	923	ev_feed_fd_event (EV_P_ int fd, int revents)
850	{	924	{
851	if (fd >= 0 && fd < anfdmax)	925	if (fd >= 0 && fd < anfdmax)
852	fd_event_nc (EV_A_ fd, revents);	926	fd_event_nocheck (EV_A_ fd, revents);
853	}	927	}
854		928
855	/* make sure the external fd watch events are in-sync */	929	/* make sure the external fd watch events are in-sync */
856	/* with the kernel/libev internal state */	930	/* with the kernel/libev internal state */
857	inline_size void	931	inline_size void
…		…
872		946
873	#if EV_SELECT_IS_WINSOCKET	947	#if EV_SELECT_IS_WINSOCKET
874	if (events)	948	if (events)
875	{	949	{
876	unsigned long arg;	950	unsigned long arg;
877	#ifdef EV_FD_TO_WIN32_HANDLE
878	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	951	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
879	#else
880	anfd->handle = _get_osfhandle (fd);
881	#endif
882	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	952	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
883	}	953	}
884	#endif	954	#endif
885		955
886	{	956	{
…		…
924	ev_io_stop (EV_A_ w);	994	ev_io_stop (EV_A_ w);
925	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	995	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
926	}	996	}
927	}	997	}
928		998
929	/* check whether the given fd is atcually valid, for error recovery */	999	/* check whether the given fd is actually valid, for error recovery */
930	inline_size int	1000	inline_size int
931	fd_valid (int fd)	1001	fd_valid (int fd)
932	{	1002	{
933	#ifdef _WIN32	1003	#ifdef _WIN32
934	return _get_osfhandle (fd) != -1;	1004	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
935	#else	1005	#else
936	return fcntl (fd, F_GETFD) != -1;	1006	return fcntl (fd, F_GETFD) != -1;
937	#endif	1007	#endif
938	}	1008	}
939		1009
…		…
974	{	1044	{
975	anfds [fd].events = 0;	1045	anfds [fd].events = 0;
976	anfds [fd].emask = 0;	1046	anfds [fd].emask = 0;
977	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);	1047	fd_change (EV_A_ fd, EV__IOFDSET \| EV_ANFD_REIFY);
978	}	1048	}
		1049	}
		1050
		1051	/* used to prepare libev internal fd's */
		1052	/* this is not fork-safe */
		1053	inline_speed void
		1054	fd_intern (int fd)
		1055	{
		1056	#ifdef _WIN32
		1057	unsigned long arg = 1;
		1058	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1059	#else
		1060	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1061	fcntl (fd, F_SETFL, O_NONBLOCK);
		1062	#endif
979	}	1063	}
980		1064
981	/*****************************************************************************/	1065	/*****************************************************************************/
982		1066
983	/*	1067	/*
…		…
1137		1221
1138	static ANSIG signals [EV_NSIG - 1];	1222	static ANSIG signals [EV_NSIG - 1];
1139		1223
1140	/*****************************************************************************/	1224	/*****************************************************************************/
1141		1225
1142	/* used to prepare libev internal fd's */	1226	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1143	/* this is not fork-safe */
1144	inline_speed void
1145	fd_intern (int fd)
1146	{
1147	#ifdef _WIN32
1148	unsigned long arg = 1;
1149	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1150	#else
1151	fcntl (fd, F_SETFD, FD_CLOEXEC);
1152	fcntl (fd, F_SETFL, O_NONBLOCK);
1153	#endif
1154	}
1155		1227
1156	static void noinline	1228	static void noinline
1157	evpipe_init (EV_P)	1229	evpipe_init (EV_P)
1158	{	1230	{
1159	if (!ev_is_active (&pipe_w))	1231	if (!ev_is_active (&pipe_w))
1160	{	1232	{
1161	#if EV_USE_EVENTFD	1233	# if EV_USE_EVENTFD
1162	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);	1234	evfd = eventfd (0, EFD_NONBLOCK \| EFD_CLOEXEC);
1163	if (evfd < 0 && errno == EINVAL)	1235	if (evfd < 0 && errno == EINVAL)
1164	evfd = eventfd (0, 0);	1236	evfd = eventfd (0, 0);
1165		1237
1166	if (evfd >= 0)	1238	if (evfd >= 0)
…		…
1168	evpipe [0] = -1;	1240	evpipe [0] = -1;
1169	fd_intern (evfd); /* doing it twice doesn't hurt */	1241	fd_intern (evfd); /* doing it twice doesn't hurt */
1170	ev_io_set (&pipe_w, evfd, EV_READ);	1242	ev_io_set (&pipe_w, evfd, EV_READ);
1171	}	1243	}
1172	else	1244	else
1173	#endif	1245	# endif
1174	{	1246	{
1175	while (pipe (evpipe))	1247	while (pipe (evpipe))
1176	ev_syserr ("(libev) error creating signal/async pipe");	1248	ev_syserr ("(libev) error creating signal/async pipe");
1177		1249
1178	fd_intern (evpipe [0]);	1250	fd_intern (evpipe [0]);
…		…
1189	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1261	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1190	{	1262	{
1191	if (!*flag)	1263	if (!*flag)
1192	{	1264	{
1193	int old_errno = errno; /* save errno because write might clobber it */	1265	int old_errno = errno; /* save errno because write might clobber it */
		1266	char dummy;
1194		1267
1195	*flag = 1;	1268	*flag = 1;
1196		1269
1197	#if EV_USE_EVENTFD	1270	#if EV_USE_EVENTFD
1198	if (evfd >= 0)	1271	if (evfd >= 0)
…		…
1200	uint64_t counter = 1;	1273	uint64_t counter = 1;
1201	write (evfd, &counter, sizeof (uint64_t));	1274	write (evfd, &counter, sizeof (uint64_t));
1202	}	1275	}
1203	else	1276	else
1204	#endif	1277	#endif
1205	write (evpipe [1], &old_errno, 1);	1278	write (evpipe [1], &dummy, 1);
1206		1279
1207	errno = old_errno;	1280	errno = old_errno;
1208	}	1281	}
1209	}	1282	}
1210		1283
…		…
1259	{	1332	{
1260	#if EV_MULTIPLICITY	1333	#if EV_MULTIPLICITY
1261	EV_P = signals [signum - 1].loop;	1334	EV_P = signals [signum - 1].loop;
1262	#endif	1335	#endif
1263		1336
1264	#if _WIN32	1337	#ifdef _WIN32
1265	signal (signum, ev_sighandler);	1338	signal (signum, ev_sighandler);
1266	#endif	1339	#endif
1267		1340
1268	signals [signum - 1].pending = 1;	1341	signals [signum - 1].pending = 1;
1269	evpipe_write (EV_A_ &sig_pending);	1342	evpipe_write (EV_A_ &sig_pending);
…		…
1311	break;	1384	break;
1312	}	1385	}
1313	}	1386	}
1314	#endif	1387	#endif
1315		1388
		1389	#endif
		1390
1316	/*****************************************************************************/	1391	/*****************************************************************************/
1317		1392
		1393	#if EV_CHILD_ENABLE
1318	static WL childs [EV_PID_HASHSIZE];	1394	static WL childs [EV_PID_HASHSIZE];
1319
1320	#ifndef _WIN32
1321		1395
1322	static ev_signal childev;	1396	static ev_signal childev;
1323		1397
1324	#ifndef WIFCONTINUED	1398	#ifndef WIFCONTINUED
1325	# define WIFCONTINUED(status) 0	1399	# define WIFCONTINUED(status) 0
…		…
1330	child_reap (EV_P_ int chain, int pid, int status)	1404	child_reap (EV_P_ int chain, int pid, int status)
1331	{	1405	{
1332	ev_child *w;	1406	ev_child *w;
1333	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);	1407	int traced = WIFSTOPPED (status) \|\| WIFCONTINUED (status);
1334		1408
1335	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1409	for (w = (ev_child )childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child )((WL)w)->next)
1336	{	1410	{
1337	if ((w->pid == pid \|\| !w->pid)	1411	if ((w->pid == pid \|\| !w->pid)
1338	&& (!traced \|\| (w->flags & 1)))	1412	&& (!traced \|\| (w->flags & 1)))
1339	{	1413	{
1340	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */	1414	ev_set_priority (w, EV_MAXPRI); /* need to do it now, this must be the same prio as the signal watcher itself */
…		…
1365	/* make sure we are called again until all children have been reaped */	1439	/* make sure we are called again until all children have been reaped */
1366	/* we need to do it this way so that the callback gets called before we continue */	1440	/* we need to do it this way so that the callback gets called before we continue */
1367	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1441	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1368		1442
1369	child_reap (EV_A_ pid, pid, status);	1443	child_reap (EV_A_ pid, pid, status);
1370	if (EV_PID_HASHSIZE > 1)	1444	if ((EV_PID_HASHSIZE) > 1)
1371	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1445	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1372	}	1446	}
1373		1447
1374	#endif	1448	#endif
1375		1449
…		…
1442	#ifdef __APPLE__	1516	#ifdef __APPLE__
1443	/* only select works correctly on that "unix-certified" platform */	1517	/* only select works correctly on that "unix-certified" platform */
1444	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1518	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1445	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1519	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1446	#endif	1520	#endif
		1521	#ifdef __FreeBSD__
		1522	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1523	#endif
1447		1524
1448	return flags;	1525	return flags;
1449	}	1526	}
1450		1527
1451	unsigned int	1528	unsigned int
…		…
1464	ev_backend (EV_P)	1541	ev_backend (EV_P)
1465	{	1542	{
1466	return backend;	1543	return backend;
1467	}	1544	}
1468		1545
1469	#if EV_MINIMAL < 2	1546	#if EV_FEATURE_API
1470	unsigned int	1547	unsigned int
1471	ev_loop_count (EV_P)	1548	ev_iteration (EV_P)
1472	{	1549	{
1473	return loop_count;	1550	return loop_count;
1474	}	1551	}
1475		1552
1476	unsigned int	1553	unsigned int
1477	ev_loop_depth (EV_P)	1554	ev_depth (EV_P)
1478	{	1555	{
1479	return loop_depth;	1556	return loop_depth;
1480	}	1557	}
1481		1558
1482	void	1559	void
…		…
1554		1631
1555	ev_rt_now = ev_time ();	1632	ev_rt_now = ev_time ();
1556	mn_now = get_clock ();	1633	mn_now = get_clock ();
1557	now_floor = mn_now;	1634	now_floor = mn_now;
1558	rtmn_diff = ev_rt_now - mn_now;	1635	rtmn_diff = ev_rt_now - mn_now;
1559	#if EV_MINIMAL < 2	1636	#if EV_FEATURE_API
1560	invoke_cb = ev_invoke_pending;	1637	invoke_cb = ev_invoke_pending;
1561	#endif	1638	#endif
1562		1639
1563	io_blocktime = 0.;	1640	io_blocktime = 0.;
1564	timeout_blocktime = 0.;	1641	timeout_blocktime = 0.;
…		…
1570	#endif	1647	#endif
1571	#if EV_USE_INOTIFY	1648	#if EV_USE_INOTIFY
1572	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;	1649	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1573	#endif	1650	#endif
1574	#if EV_USE_SIGNALFD	1651	#if EV_USE_SIGNALFD
1575	sigfd = flags & EVFLAG_NOSIGFD ? -1 : -2;	1652	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1576	#endif	1653	#endif
1577		1654
1578	if (!(flags & 0x0000ffffU))	1655	if (!(flags & 0x0000ffffU))
1579	flags \|= ev_recommended_backends ();	1656	flags \|= ev_recommended_backends ();
1580		1657
…		…
1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1671	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595	#endif	1672	#endif
1596		1673
1597	ev_prepare_init (&pending_w, pendingcb);	1674	ev_prepare_init (&pending_w, pendingcb);
1598		1675
		1676	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1599	ev_init (&pipe_w, pipecb);	1677	ev_init (&pipe_w, pipecb);
1600	ev_set_priority (&pipe_w, EV_MAXPRI);	1678	ev_set_priority (&pipe_w, EV_MAXPRI);
		1679	#endif
1601	}	1680	}
1602	}	1681	}
1603		1682
1604	/* free up a loop structure */	1683	/* free up a loop structure */
1605	static void noinline	1684	static void noinline
…		…
1617	close (evfd);	1696	close (evfd);
1618	#endif	1697	#endif
1619		1698
1620	if (evpipe [0] >= 0)	1699	if (evpipe [0] >= 0)
1621	{	1700	{
1622	close (evpipe [0]);	1701	EV_WIN32_CLOSE_FD (evpipe [0]);
1623	close (evpipe [1]);	1702	EV_WIN32_CLOSE_FD (evpipe [1]);
1624	}	1703	}
1625	}	1704	}
1626		1705
1627	#if EV_USE_SIGNALFD	1706	#if EV_USE_SIGNALFD
1628	if (ev_is_active (&sigfd_w))	1707	if (ev_is_active (&sigfd_w))
1629	{
1630	/ev_ref (EV_A);/
1631	/ev_io_stop (EV_A_ &sigfd_w);/
1632
1633	close (sigfd);	1708	close (sigfd);
1634	}
1635	#endif	1709	#endif
1636		1710
1637	#if EV_USE_INOTIFY	1711	#if EV_USE_INOTIFY
1638	if (fs_fd >= 0)	1712	if (fs_fd >= 0)
1639	close (fs_fd);	1713	close (fs_fd);
…		…
1724	close (evfd);	1798	close (evfd);
1725	#endif	1799	#endif
1726		1800
1727	if (evpipe [0] >= 0)	1801	if (evpipe [0] >= 0)
1728	{	1802	{
1729	close (evpipe [0]);	1803	EV_WIN32_CLOSE_FD (evpipe [0]);
1730	close (evpipe [1]);	1804	EV_WIN32_CLOSE_FD (evpipe [1]);
1731	}	1805	}
1732		1806
		1807	#if EV_SIGNAL_ENABLE \|\| EV_ASYNC_ENABLE
1733	evpipe_init (EV_A);	1808	evpipe_init (EV_A);
1734	/* now iterate over everything, in case we missed something */	1809	/* now iterate over everything, in case we missed something */
1735	pipecb (EV_A_ &pipe_w, EV_READ);	1810	pipecb (EV_A_ &pipe_w, EV_READ);
		1811	#endif
1736	}	1812	}
1737		1813
1738	postfork = 0;	1814	postfork = 0;
1739	}	1815	}
1740		1816
…		…
1802	verify_watcher (EV_A_ ws [cnt]);	1878	verify_watcher (EV_A_ ws [cnt]);
1803	}	1879	}
1804	}	1880	}
1805	#endif	1881	#endif
1806		1882
1807	#if EV_MINIMAL < 2	1883	#if EV_FEATURE_API
1808	void	1884	void
1809	ev_loop_verify (EV_P)	1885	ev_verify (EV_P)
1810	{	1886	{
1811	#if EV_VERIFY	1887	#if EV_VERIFY
1812	int i;	1888	int i;
1813	WL w;	1889	WL w;
1814		1890
…		…
1853	#if EV_ASYNC_ENABLE	1929	#if EV_ASYNC_ENABLE
1854	assert (asyncmax >= asynccnt);	1930	assert (asyncmax >= asynccnt);
1855	array_verify (EV_A_ (W *)asyncs, asynccnt);	1931	array_verify (EV_A_ (W *)asyncs, asynccnt);
1856	#endif	1932	#endif
1857		1933
		1934	#if EV_PREPARE_ENABLE
1858	assert (preparemax >= preparecnt);	1935	assert (preparemax >= preparecnt);
1859	array_verify (EV_A_ (W *)prepares, preparecnt);	1936	array_verify (EV_A_ (W *)prepares, preparecnt);
		1937	#endif
1860		1938
		1939	#if EV_CHECK_ENABLE
1861	assert (checkmax >= checkcnt);	1940	assert (checkmax >= checkcnt);
1862	array_verify (EV_A_ (W *)checks, checkcnt);	1941	array_verify (EV_A_ (W *)checks, checkcnt);
		1942	#endif
1863		1943
1864	# if 0	1944	# if 0
		1945	#if EV_CHILD_ENABLE
1865	for (w = (ev_child )childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child )((WL)w)->next)	1946	for (w = (ev_child )childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child )((WL)w)->next)
1866	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)	1947	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1948	#endif
1867	# endif	1949	# endif
1868	#endif	1950	#endif
1869	}	1951	}
1870	#endif	1952	#endif
1871		1953
…		…
1887		1969
1888	loop_init (EV_A_ flags);	1970	loop_init (EV_A_ flags);
1889		1971
1890	if (ev_backend (EV_A))	1972	if (ev_backend (EV_A))
1891	{	1973	{
1892	#ifndef _WIN32	1974	#if EV_CHILD_ENABLE
1893	ev_signal_init (&childev, childcb, SIGCHLD);	1975	ev_signal_init (&childev, childcb, SIGCHLD);
1894	ev_set_priority (&childev, EV_MAXPRI);	1976	ev_set_priority (&childev, EV_MAXPRI);
1895	ev_signal_start (EV_A_ &childev);	1977	ev_signal_start (EV_A_ &childev);
1896	ev_unref (EV_A); /* child watcher should not keep loop alive */	1978	ev_unref (EV_A); /* child watcher should not keep loop alive */
1897	#endif	1979	#endif
…		…
1910	EV_P = ev_default_loop_ptr;	1992	EV_P = ev_default_loop_ptr;
1911	#endif	1993	#endif
1912		1994
1913	ev_default_loop_ptr = 0;	1995	ev_default_loop_ptr = 0;
1914		1996
1915	#ifndef _WIN32	1997	#if EV_CHILD_ENABLE
1916	ev_ref (EV_A); /* child watcher */	1998	ev_ref (EV_A); /* child watcher */
1917	ev_signal_stop (EV_A_ &childev);	1999	ev_signal_stop (EV_A_ &childev);
1918	#endif	2000	#endif
1919		2001
1920	loop_destroy (EV_A);	2002	loop_destroy (EV_A);
…		…
2026	EV_FREQUENT_CHECK;	2108	EV_FREQUENT_CHECK;
2027	feed_reverse (EV_A_ (W)w);	2109	feed_reverse (EV_A_ (W)w);
2028	}	2110	}
2029	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2111	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030		2112
2031	feed_reverse_done (EV_A_ EV_TIMEOUT);	2113	feed_reverse_done (EV_A_ EV_TIMER);
2032	}	2114	}
2033	}	2115	}
2034		2116
2035	#if EV_PERIODIC_ENABLE	2117	#if EV_PERIODIC_ENABLE
2036	/* make periodics pending */	2118	/* make periodics pending */
…		…
2127	ANHE_at_cache (*he);	2209	ANHE_at_cache (*he);
2128	}	2210	}
2129	}	2211	}
2130		2212
2131	/* fetch new monotonic and realtime times from the kernel */	2213	/* fetch new monotonic and realtime times from the kernel */
2132	/* also detetc if there was a timejump, and act accordingly */	2214	/* also detect if there was a timejump, and act accordingly */
2133	inline_speed void	2215	inline_speed void
2134	time_update (EV_P_ ev_tstamp max_block)	2216	time_update (EV_P_ ev_tstamp max_block)
2135	{	2217	{
2136	#if EV_USE_MONOTONIC	2218	#if EV_USE_MONOTONIC
2137	if (expect_true (have_monotonic))	2219	if (expect_true (have_monotonic))
…		…
2197	}	2279	}
2198		2280
2199	void	2281	void
2200	ev_loop (EV_P_ int flags)	2282	ev_loop (EV_P_ int flags)
2201	{	2283	{
2202	#if EV_MINIMAL < 2	2284	#if EV_FEATURE_API
2203	++loop_depth;	2285	++loop_depth;
2204	#endif	2286	#endif
2205		2287
2206	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2288	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2207		2289
…		…
2210	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2292	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211		2293
2212	do	2294	do
2213	{	2295	{
2214	#if EV_VERIFY >= 2	2296	#if EV_VERIFY >= 2
2215	ev_loop_verify (EV_A);	2297	ev_verify (EV_A);
2216	#endif	2298	#endif
2217		2299
2218	#ifndef _WIN32	2300	#ifndef _WIN32
2219	if (expect_false (curpid)) /* penalise the forking check even more */	2301	if (expect_false (curpid)) /* penalise the forking check even more */
2220	if (expect_false (getpid () != curpid))	2302	if (expect_false (getpid () != curpid))
…		…
2232	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2314	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233	EV_INVOKE_PENDING;	2315	EV_INVOKE_PENDING;
2234	}	2316	}
2235	#endif	2317	#endif
2236		2318
		2319	#if EV_PREPARE_ENABLE
2237	/* queue prepare watchers (and execute them) */	2320	/* queue prepare watchers (and execute them) */
2238	if (expect_false (preparecnt))	2321	if (expect_false (preparecnt))
2239	{	2322	{
2240	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2323	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241	EV_INVOKE_PENDING;	2324	EV_INVOKE_PENDING;
2242	}	2325	}
		2326	#endif
2243		2327
2244	if (expect_false (loop_done))	2328	if (expect_false (loop_done))
2245	break;	2329	break;
2246		2330
2247	/* we might have forked, so reify kernel state if necessary */	2331	/* we might have forked, so reify kernel state if necessary */
…		…
2298	waittime -= sleeptime;	2382	waittime -= sleeptime;
2299	}	2383	}
2300	}	2384	}
2301	}	2385	}
2302		2386
2303	#if EV_MINIMAL < 2	2387	#if EV_FEATURE_API
2304	++loop_count;	2388	++loop_count;
2305	#endif	2389	#endif
2306	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2390	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2307	backend_poll (EV_A_ waittime);	2391	backend_poll (EV_A_ waittime);
2308	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2392	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
…		…
2320	#if EV_IDLE_ENABLE	2404	#if EV_IDLE_ENABLE
2321	/* queue idle watchers unless other events are pending */	2405	/* queue idle watchers unless other events are pending */
2322	idle_reify (EV_A);	2406	idle_reify (EV_A);
2323	#endif	2407	#endif
2324		2408
		2409	#if EV_CHECK_ENABLE
2325	/* queue check watchers, to be executed first */	2410	/* queue check watchers, to be executed first */
2326	if (expect_false (checkcnt))	2411	if (expect_false (checkcnt))
2327	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2412	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2413	#endif
2328		2414
2329	EV_INVOKE_PENDING;	2415	EV_INVOKE_PENDING;
2330	}	2416	}
2331	while (expect_true (	2417	while (expect_true (
2332	activecnt	2418	activecnt
…		…
2335	));	2421	));
2336		2422
2337	if (loop_done == EVUNLOOP_ONE)	2423	if (loop_done == EVUNLOOP_ONE)
2338	loop_done = EVUNLOOP_CANCEL;	2424	loop_done = EVUNLOOP_CANCEL;
2339		2425
2340	#if EV_MINIMAL < 2	2426	#if EV_FEATURE_API
2341	--loop_depth;	2427	--loop_depth;
2342	#endif	2428	#endif
2343	}	2429	}
2344		2430
2345	void	2431	void
…		…
2471		2557
2472	if (expect_false (ev_is_active (w)))	2558	if (expect_false (ev_is_active (w)))
2473	return;	2559	return;
2474		2560
2475	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2561	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));	2562	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET \| EV_READ \| EV_WRITE))));
2477		2563
2478	EV_FREQUENT_CHECK;	2564	EV_FREQUENT_CHECK;
2479		2565
2480	ev_start (EV_A_ (W)w, 1);	2566	ev_start (EV_A_ (W)w, 1);
2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2567	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2551	timers [active] = timers [timercnt + HEAP0];	2637	timers [active] = timers [timercnt + HEAP0];
2552	adjustheap (timers, timercnt, active);	2638	adjustheap (timers, timercnt, active);
2553	}	2639	}
2554	}	2640	}
2555		2641
2556	EV_FREQUENT_CHECK;
2557
2558	ev_at (w) -= mn_now;	2642	ev_at (w) -= mn_now;
2559		2643
2560	ev_stop (EV_A_ (W)w);	2644	ev_stop (EV_A_ (W)w);
		2645
		2646	EV_FREQUENT_CHECK;
2561	}	2647	}
2562		2648
2563	void noinline	2649	void noinline
2564	ev_timer_again (EV_P_ ev_timer *w)	2650	ev_timer_again (EV_P_ ev_timer *w)
2565	{	2651	{
…		…
2644	periodics [active] = periodics [periodiccnt + HEAP0];	2730	periodics [active] = periodics [periodiccnt + HEAP0];
2645	adjustheap (periodics, periodiccnt, active);	2731	adjustheap (periodics, periodiccnt, active);
2646	}	2732	}
2647	}	2733	}
2648		2734
2649	EV_FREQUENT_CHECK;
2650
2651	ev_stop (EV_A_ (W)w);	2735	ev_stop (EV_A_ (W)w);
		2736
		2737	EV_FREQUENT_CHECK;
2652	}	2738	}
2653		2739
2654	void noinline	2740	void noinline
2655	ev_periodic_again (EV_P_ ev_periodic *w)	2741	ev_periodic_again (EV_P_ ev_periodic *w)
2656	{	2742	{
…		…
2661	#endif	2747	#endif
2662		2748
2663	#ifndef SA_RESTART	2749	#ifndef SA_RESTART
2664	# define SA_RESTART 0	2750	# define SA_RESTART 0
2665	#endif	2751	#endif
		2752
		2753	#if EV_SIGNAL_ENABLE
2666		2754
2667	void noinline	2755	void noinline
2668	ev_signal_start (EV_P_ ev_signal *w)	2756	ev_signal_start (EV_P_ ev_signal *w)
2669	{	2757	{
2670	if (expect_false (ev_is_active (w)))	2758	if (expect_false (ev_is_active (w)))
…		…
2717	if (!((WL)w)->next)	2805	if (!((WL)w)->next)
2718	# if EV_USE_SIGNALFD	2806	# if EV_USE_SIGNALFD
2719	if (sigfd < 0) /TODO/	2807	if (sigfd < 0) /TODO/
2720	# endif	2808	# endif
2721	{	2809	{
2722	# if _WIN32	2810	# ifdef _WIN32
		2811	evpipe_init (EV_A);
		2812
2723	signal (w->signum, ev_sighandler);	2813	signal (w->signum, ev_sighandler);
2724	# else	2814	# else
2725	struct sigaction sa;	2815	struct sigaction sa;
2726		2816
2727	evpipe_init (EV_A);	2817	evpipe_init (EV_A);
…		…
2758	signals [w->signum - 1].loop = 0; /* unattach from signal */	2848	signals [w->signum - 1].loop = 0; /* unattach from signal */
2759	#endif	2849	#endif
2760	#if EV_USE_SIGNALFD	2850	#if EV_USE_SIGNALFD
2761	if (sigfd >= 0)	2851	if (sigfd >= 0)
2762	{	2852	{
2763	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2853	sigset_t ss;
		2854
		2855	sigemptyset (&ss);
		2856	sigaddset (&ss, w->signum);
2764	sigdelset (&sigfd_set, w->signum);	2857	sigdelset (&sigfd_set, w->signum);
		2858
2765	signalfd (sigfd, &sigfd_set, 0);	2859	signalfd (sigfd, &sigfd_set, 0);
2766	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2860	sigprocmask (SIG_UNBLOCK, &ss, 0);
2767	/TODO: maybe unblock signal? /
2768	}	2861	}
2769	else	2862	else
2770	#endif	2863	#endif
2771	signal (w->signum, SIG_DFL);	2864	signal (w->signum, SIG_DFL);
2772	}	2865	}
2773		2866
2774	EV_FREQUENT_CHECK;	2867	EV_FREQUENT_CHECK;
2775	}	2868	}
2776		2869
		2870	#endif
		2871
		2872	#if EV_CHILD_ENABLE
		2873
2777	void	2874	void
2778	ev_child_start (EV_P_ ev_child *w)	2875	ev_child_start (EV_P_ ev_child *w)
2779	{	2876	{
2780	#if EV_MULTIPLICITY	2877	#if EV_MULTIPLICITY
2781	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	2878	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
…		…
2784	return;	2881	return;
2785		2882
2786	EV_FREQUENT_CHECK;	2883	EV_FREQUENT_CHECK;
2787		2884
2788	ev_start (EV_A_ (W)w, 1);	2885	ev_start (EV_A_ (W)w, 1);
2789	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2886	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2790		2887
2791	EV_FREQUENT_CHECK;	2888	EV_FREQUENT_CHECK;
2792	}	2889	}
2793		2890
2794	void	2891	void
…		…
2798	if (expect_false (!ev_is_active (w)))	2895	if (expect_false (!ev_is_active (w)))
2799	return;	2896	return;
2800		2897
2801	EV_FREQUENT_CHECK;	2898	EV_FREQUENT_CHECK;
2802		2899
2803	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2900	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2804	ev_stop (EV_A_ (W)w);	2901	ev_stop (EV_A_ (W)w);
2805		2902
2806	EV_FREQUENT_CHECK;	2903	EV_FREQUENT_CHECK;
2807	}	2904	}
		2905
		2906	#endif
2808		2907
2809	#if EV_STAT_ENABLE	2908	#if EV_STAT_ENABLE
2810		2909
2811	# ifdef _WIN32	2910	# ifdef _WIN32
2812	# undef lstat	2911	# undef lstat
…		…
2818	#define MIN_STAT_INTERVAL 0.1074891	2917	#define MIN_STAT_INTERVAL 0.1074891
2819		2918
2820	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2919	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2821		2920
2822	#if EV_USE_INOTIFY	2921	#if EV_USE_INOTIFY
2823	# define EV_INOTIFY_BUFSIZE 8192	2922
		2923	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2924	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2824		2925
2825	static void noinline	2926	static void noinline
2826	infy_add (EV_P_ ev_stat *w)	2927	infy_add (EV_P_ ev_stat *w)
2827	{	2928	{
2828	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);	2929	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);
2829		2930
2830	if (w->wd < 0)	2931	if (w->wd >= 0)
		2932	{
		2933	struct statfs sfs;
		2934
		2935	/* now local changes will be tracked by inotify, but remote changes won't */
		2936	/* unless the filesystem is known to be local, we therefore still poll */
		2937	/* also do poll on <2.6.25, but with normal frequency */
		2938
		2939	if (!fs_2625)
		2940	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2941	else if (!statfs (w->path, &sfs)
		2942	&& (sfs.f_type == 0x1373 /* devfs */
		2943	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
		2944	\|\| sfs.f_type == 0x3153464a /* jfs */
		2945	\|\| sfs.f_type == 0x52654973 /* reiser3 */
		2946	\|\| sfs.f_type == 0x01021994 /* tempfs */
		2947	\|\| sfs.f_type == 0x58465342 /* xfs */))
		2948	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2949	else
		2950	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2831	{	2951	}
		2952	else
		2953	{
		2954	/* can't use inotify, continue to stat */
2832	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2955	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2833	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2834		2956
2835	/* monitor some parent directory for speedup hints */	2957	/* if path is not there, monitor some parent directory for speedup hints */
2836	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2958	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2837	/* but an efficiency issue only */	2959	/* but an efficiency issue only */
2838	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)	2960	if ((errno == ENOENT \|\| errno == EACCES) && strlen (w->path) < 4096)
2839	{	2961	{
2840	char path [4096];	2962	char path [4096];
…		…
2856	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));	2978	while (w->wd < 0 && (errno == ENOENT \|\| errno == EACCES));
2857	}	2979	}
2858	}	2980	}
2859		2981
2860	if (w->wd >= 0)	2982	if (w->wd >= 0)
2861	{
2862	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2983	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2863		2984
2864	/* now local changes will be tracked by inotify, but remote changes won't */	2985	/* now re-arm timer, if required */
2865	/* unless the filesystem it known to be local, we therefore still poll */	2986	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2866	/* also do poll on <2.6.25, but with normal frequency */
2867	struct statfs sfs;
2868
2869	if (fs_2625 && !statfs (w->path, &sfs))
2870	if (sfs.f_type == 0x1373 /* devfs */
2871	\|\| sfs.f_type == 0xEF53 /* ext2/3 */
2872	\|\| sfs.f_type == 0x3153464a /* jfs */
2873	\|\| sfs.f_type == 0x52654973 /* reiser3 */
2874	\|\| sfs.f_type == 0x01021994 /* tempfs */
2875	\|\| sfs.f_type == 0x58465342 /* xfs */)
2876	return;
2877
2878	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2879	ev_timer_again (EV_A_ &w->timer);	2987	ev_timer_again (EV_A_ &w->timer);
2880	}	2988	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2881	}	2989	}
2882		2990
2883	static void noinline	2991	static void noinline
2884	infy_del (EV_P_ ev_stat *w)	2992	infy_del (EV_P_ ev_stat *w)
2885	{	2993	{
…		…
2888		2996
2889	if (wd < 0)	2997	if (wd < 0)
2890	return;	2998	return;
2891		2999
2892	w->wd = -2;	3000	w->wd = -2;
2893	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3001	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2894	wlist_del (&fs_hash [slot].head, (WL)w);	3002	wlist_del (&fs_hash [slot].head, (WL)w);
2895		3003
2896	/* remove this watcher, if others are watching it, they will rearm */	3004	/* remove this watcher, if others are watching it, they will rearm */
2897	inotify_rm_watch (fs_fd, wd);	3005	inotify_rm_watch (fs_fd, wd);
2898	}	3006	}
…		…
2900	static void noinline	3008	static void noinline
2901	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3009	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2902	{	3010	{
2903	if (slot < 0)	3011	if (slot < 0)
2904	/* overflow, need to check for all hash slots */	3012	/* overflow, need to check for all hash slots */
2905	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3013	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2906	infy_wd (EV_A_ slot, wd, ev);	3014	infy_wd (EV_A_ slot, wd, ev);
2907	else	3015	else
2908	{	3016	{
2909	WL w_;	3017	WL w_;
2910		3018
2911	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3019	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2912	{	3020	{
2913	ev_stat w = (ev_stat )w_;	3021	ev_stat w = (ev_stat )w_;
2914	w_ = w_->next; /* lets us remove this watcher and all before it */	3022	w_ = w_->next; /* lets us remove this watcher and all before it */
2915		3023
2916	if (w->wd == wd \|\| wd == -1)	3024	if (w->wd == wd \|\| wd == -1)
2917	{	3025	{
2918	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))	3026	if (ev->mask & (IN_IGNORED \| IN_UNMOUNT \| IN_DELETE_SELF))
2919	{	3027	{
2920	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3028	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2921	w->wd = -1;	3029	w->wd = -1;
2922	infy_add (EV_A_ w); /* re-add, no matter what */	3030	infy_add (EV_A_ w); /* re-add, no matter what */
2923	}	3031	}
2924		3032
2925	stat_timer_cb (EV_A_ &w->timer, 0);	3033	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2930		3038
2931	static void	3039	static void
2932	infy_cb (EV_P_ ev_io *w, int revents)	3040	infy_cb (EV_P_ ev_io *w, int revents)
2933	{	3041	{
2934	char buf [EV_INOTIFY_BUFSIZE];	3042	char buf [EV_INOTIFY_BUFSIZE];
2935	struct inotify_event ev = (struct inotify_event )buf;
2936	int ofs;	3043	int ofs;
2937	int len = read (fs_fd, buf, sizeof (buf));	3044	int len = read (fs_fd, buf, sizeof (buf));
2938		3045
2939	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3046	for (ofs = 0; ofs < len; )
		3047	{
		3048	struct inotify_event ev = (struct inotify_event )(buf + ofs);
2940	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3049	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3050	ofs += sizeof (struct inotify_event) + ev->len;
		3051	}
		3052	}
		3053
		3054	inline_size unsigned int
		3055	ev_linux_version (void)
		3056	{
		3057	struct utsname buf;
		3058	unsigned int v;
		3059	int i;
		3060	char *p = buf.release;
		3061
		3062	if (uname (&buf))
		3063	return 0;
		3064
		3065	for (i = 3+1; --i; )
		3066	{
		3067	unsigned int c = 0;
		3068
		3069	for (;;)
		3070	{
		3071	if (p >= '0' && p <= '9')
		3072	c = c * 10 + *p++ - '0';
		3073	else
		3074	{
		3075	p += *p == '.';
		3076	break;
		3077	}
		3078	}
		3079
		3080	v = (v << 8) \| c;
		3081	}
		3082
		3083	return v;
2941	}	3084	}
2942		3085
2943	inline_size void	3086	inline_size void
2944	check_2625 (EV_P)	3087	ev_check_2625 (EV_P)
2945	{	3088	{
2946	/* kernels < 2.6.25 are borked	3089	/* kernels < 2.6.25 are borked
2947	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3090	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2948	*/	3091	*/
2949	struct utsname buf;	3092	if (ev_linux_version () < 0x020619)
2950	int major, minor, micro;
2951
2952	if (uname (&buf))
2953	return;	3093	return;
2954		3094
2955	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2956	return;
2957
2958	if (major < 2
2959	\|\| (major == 2 && minor < 6)
2960	\|\| (major == 2 && minor == 6 && micro < 25))
2961	return;
2962
2963	fs_2625 = 1;	3095	fs_2625 = 1;
		3096	}
		3097
		3098	inline_size int
		3099	infy_newfd (void)
		3100	{
		3101	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3102	int fd = inotify_init1 (IN_CLOEXEC \| IN_NONBLOCK);
		3103	if (fd >= 0)
		3104	return fd;
		3105	#endif
		3106	return inotify_init ();
2964	}	3107	}
2965		3108
2966	inline_size void	3109	inline_size void
2967	infy_init (EV_P)	3110	infy_init (EV_P)
2968	{	3111	{
2969	if (fs_fd != -2)	3112	if (fs_fd != -2)
2970	return;	3113	return;
2971		3114
2972	fs_fd = -1;	3115	fs_fd = -1;
2973		3116
2974	check_2625 (EV_A);	3117	ev_check_2625 (EV_A);
2975		3118
2976	fs_fd = inotify_init ();	3119	fs_fd = infy_newfd ();
2977		3120
2978	if (fs_fd >= 0)	3121	if (fs_fd >= 0)
2979	{	3122	{
		3123	fd_intern (fs_fd);
2980	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3124	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2981	ev_set_priority (&fs_w, EV_MAXPRI);	3125	ev_set_priority (&fs_w, EV_MAXPRI);
2982	ev_io_start (EV_A_ &fs_w);	3126	ev_io_start (EV_A_ &fs_w);
		3127	ev_unref (EV_A);
2983	}	3128	}
2984	}	3129	}
2985		3130
2986	inline_size void	3131	inline_size void
2987	infy_fork (EV_P)	3132	infy_fork (EV_P)
…		…
2989	int slot;	3134	int slot;
2990		3135
2991	if (fs_fd < 0)	3136	if (fs_fd < 0)
2992	return;	3137	return;
2993		3138
		3139	ev_ref (EV_A);
		3140	ev_io_stop (EV_A_ &fs_w);
2994	close (fs_fd);	3141	close (fs_fd);
2995	fs_fd = inotify_init ();	3142	fs_fd = infy_newfd ();
2996		3143
		3144	if (fs_fd >= 0)
		3145	{
		3146	fd_intern (fs_fd);
		3147	ev_io_set (&fs_w, fs_fd, EV_READ);
		3148	ev_io_start (EV_A_ &fs_w);
		3149	ev_unref (EV_A);
		3150	}
		3151
2997	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3152	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2998	{	3153	{
2999	WL w_ = fs_hash [slot].head;	3154	WL w_ = fs_hash [slot].head;
3000	fs_hash [slot].head = 0;	3155	fs_hash [slot].head = 0;
3001		3156
3002	while (w_)	3157	while (w_)
…		…
3007	w->wd = -1;	3162	w->wd = -1;
3008		3163
3009	if (fs_fd >= 0)	3164	if (fs_fd >= 0)
3010	infy_add (EV_A_ w); /* re-add, no matter what */	3165	infy_add (EV_A_ w); /* re-add, no matter what */
3011	else	3166	else
		3167	{
		3168	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3169	if (ev_is_active (&w->timer)) ev_ref (EV_A);
3012	ev_timer_again (EV_A_ &w->timer);	3170	ev_timer_again (EV_A_ &w->timer);
		3171	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3172	}
3013	}	3173	}
3014	}	3174	}
3015	}	3175	}
3016		3176
3017	#endif	3177	#endif
…		…
3034	static void noinline	3194	static void noinline
3035	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3195	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3036	{	3196	{
3037	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));	3197	ev_stat w = (ev_stat )(((char *)w_) - offsetof (ev_stat, timer));
3038		3198
3039	/* we copy this here each the time so that */	3199	ev_statdata prev = w->attr;
3040	/* prev has the old value when the callback gets invoked */
3041	w->prev = w->attr;
3042	ev_stat_stat (EV_A_ w);	3200	ev_stat_stat (EV_A_ w);
3043		3201
3044	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3202	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3045	if (	3203	if (
3046	w->prev.st_dev != w->attr.st_dev	3204	prev.st_dev != w->attr.st_dev
3047	\|\| w->prev.st_ino != w->attr.st_ino	3205	\|\| prev.st_ino != w->attr.st_ino
3048	\|\| w->prev.st_mode != w->attr.st_mode	3206	\|\| prev.st_mode != w->attr.st_mode
3049	\|\| w->prev.st_nlink != w->attr.st_nlink	3207	\|\| prev.st_nlink != w->attr.st_nlink
3050	\|\| w->prev.st_uid != w->attr.st_uid	3208	\|\| prev.st_uid != w->attr.st_uid
3051	\|\| w->prev.st_gid != w->attr.st_gid	3209	\|\| prev.st_gid != w->attr.st_gid
3052	\|\| w->prev.st_rdev != w->attr.st_rdev	3210	\|\| prev.st_rdev != w->attr.st_rdev
3053	\|\| w->prev.st_size != w->attr.st_size	3211	\|\| prev.st_size != w->attr.st_size
3054	\|\| w->prev.st_atime != w->attr.st_atime	3212	\|\| prev.st_atime != w->attr.st_atime
3055	\|\| w->prev.st_mtime != w->attr.st_mtime	3213	\|\| prev.st_mtime != w->attr.st_mtime
3056	\|\| w->prev.st_ctime != w->attr.st_ctime	3214	\|\| prev.st_ctime != w->attr.st_ctime
3057	) {	3215	) {
		3216	/* we only update w->prev on actual differences */
		3217	/* in case we test more often than invoke the callback, */
		3218	/* to ensure that prev is always different to attr */
		3219	w->prev = prev;
		3220
3058	#if EV_USE_INOTIFY	3221	#if EV_USE_INOTIFY
3059	if (fs_fd >= 0)	3222	if (fs_fd >= 0)
3060	{	3223	{
3061	infy_del (EV_A_ w);	3224	infy_del (EV_A_ w);
3062	infy_add (EV_A_ w);	3225	infy_add (EV_A_ w);
…		…
3087		3250
3088	if (fs_fd >= 0)	3251	if (fs_fd >= 0)
3089	infy_add (EV_A_ w);	3252	infy_add (EV_A_ w);
3090	else	3253	else
3091	#endif	3254	#endif
		3255	{
3092	ev_timer_again (EV_A_ &w->timer);	3256	ev_timer_again (EV_A_ &w->timer);
		3257	ev_unref (EV_A);
		3258	}
3093		3259
3094	ev_start (EV_A_ (W)w, 1);	3260	ev_start (EV_A_ (W)w, 1);
3095		3261
3096	EV_FREQUENT_CHECK;	3262	EV_FREQUENT_CHECK;
3097	}	3263	}
…		…
3106	EV_FREQUENT_CHECK;	3272	EV_FREQUENT_CHECK;
3107		3273
3108	#if EV_USE_INOTIFY	3274	#if EV_USE_INOTIFY
3109	infy_del (EV_A_ w);	3275	infy_del (EV_A_ w);
3110	#endif	3276	#endif
		3277
		3278	if (ev_is_active (&w->timer))
		3279	{
		3280	ev_ref (EV_A);
3111	ev_timer_stop (EV_A_ &w->timer);	3281	ev_timer_stop (EV_A_ &w->timer);
		3282	}
3112		3283
3113	ev_stop (EV_A_ (W)w);	3284	ev_stop (EV_A_ (W)w);
3114		3285
3115	EV_FREQUENT_CHECK;	3286	EV_FREQUENT_CHECK;
3116	}	3287	}
…		…
3161		3332
3162	EV_FREQUENT_CHECK;	3333	EV_FREQUENT_CHECK;
3163	}	3334	}
3164	#endif	3335	#endif
3165		3336
		3337	#if EV_PREPARE_ENABLE
3166	void	3338	void
3167	ev_prepare_start (EV_P_ ev_prepare *w)	3339	ev_prepare_start (EV_P_ ev_prepare *w)
3168	{	3340	{
3169	if (expect_false (ev_is_active (w)))	3341	if (expect_false (ev_is_active (w)))
3170	return;	3342	return;
…		…
3196		3368
3197	ev_stop (EV_A_ (W)w);	3369	ev_stop (EV_A_ (W)w);
3198		3370
3199	EV_FREQUENT_CHECK;	3371	EV_FREQUENT_CHECK;
3200	}	3372	}
		3373	#endif
3201		3374
		3375	#if EV_CHECK_ENABLE
3202	void	3376	void
3203	ev_check_start (EV_P_ ev_check *w)	3377	ev_check_start (EV_P_ ev_check *w)
3204	{	3378	{
3205	if (expect_false (ev_is_active (w)))	3379	if (expect_false (ev_is_active (w)))
3206	return;	3380	return;
…		…
3232		3406
3233	ev_stop (EV_A_ (W)w);	3407	ev_stop (EV_A_ (W)w);
3234		3408
3235	EV_FREQUENT_CHECK;	3409	EV_FREQUENT_CHECK;
3236	}	3410	}
		3411	#endif
3237		3412
3238	#if EV_EMBED_ENABLE	3413	#if EV_EMBED_ENABLE
3239	void noinline	3414	void noinline
3240	ev_embed_sweep (EV_P_ ev_embed *w)	3415	ev_embed_sweep (EV_P_ ev_embed *w)
3241	{	3416	{
…		…
3336		3511
3337	ev_io_stop (EV_A_ &w->io);	3512	ev_io_stop (EV_A_ &w->io);
3338	ev_prepare_stop (EV_A_ &w->prepare);	3513	ev_prepare_stop (EV_A_ &w->prepare);
3339	ev_fork_stop (EV_A_ &w->fork);	3514	ev_fork_stop (EV_A_ &w->fork);
3340		3515
		3516	ev_stop (EV_A_ (W)w);
		3517
3341	EV_FREQUENT_CHECK;	3518	EV_FREQUENT_CHECK;
3342	}	3519	}
3343	#endif	3520	#endif
3344		3521
3345	#if EV_FORK_ENABLE	3522	#if EV_FORK_ENABLE
…		…
3471	{	3648	{
3472	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));	3649	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
3473		3650
3474	if (expect_false (!once))	3651	if (expect_false (!once))
3475	{	3652	{
3476	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	3653	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMER, arg);
3477	return;	3654	return;
3478	}	3655	}
3479		3656
3480	once->cb = cb;	3657	once->cb = cb;
3481	once->arg = arg;	3658	once->arg = arg;
…		…
3568	if (types & EV_ASYNC)	3745	if (types & EV_ASYNC)
3569	for (i = asynccnt; i--; )	3746	for (i = asynccnt; i--; )
3570	cb (EV_A_ EV_ASYNC, asyncs [i]);	3747	cb (EV_A_ EV_ASYNC, asyncs [i]);
3571	#endif	3748	#endif
3572		3749
		3750	#if EV_PREPARE_ENABLE
3573	if (types & EV_PREPARE)	3751	if (types & EV_PREPARE)
3574	for (i = preparecnt; i--; )	3752	for (i = preparecnt; i--; )
3575	#if EV_EMBED_ENABLE	3753	# if EV_EMBED_ENABLE
3576	if (ev_cb (prepares [i]) != embed_prepare_cb)	3754	if (ev_cb (prepares [i]) != embed_prepare_cb)
3577	#endif	3755	# endif
3578	cb (EV_A_ EV_PREPARE, prepares [i]);	3756	cb (EV_A_ EV_PREPARE, prepares [i]);
		3757	#endif
3579		3758
		3759	#if EV_CHECK_ENABLE
3580	if (types & EV_CHECK)	3760	if (types & EV_CHECK)
3581	for (i = checkcnt; i--; )	3761	for (i = checkcnt; i--; )
3582	cb (EV_A_ EV_CHECK, checks [i]);	3762	cb (EV_A_ EV_CHECK, checks [i]);
		3763	#endif
3583		3764
		3765	#if EV_SIGNAL_ENABLE
3584	if (types & EV_SIGNAL)	3766	if (types & EV_SIGNAL)
3585	for (i = 0; i < EV_NSIG - 1; ++i)	3767	for (i = 0; i < EV_NSIG - 1; ++i)
3586	for (wl = signals [i].head; wl; )	3768	for (wl = signals [i].head; wl; )
3587	{	3769	{
3588	wn = wl->next;	3770	wn = wl->next;
3589	cb (EV_A_ EV_SIGNAL, wl);	3771	cb (EV_A_ EV_SIGNAL, wl);
3590	wl = wn;	3772	wl = wn;
3591	}	3773	}
		3774	#endif
3592		3775
		3776	#if EV_CHILD_ENABLE
3593	if (types & EV_CHILD)	3777	if (types & EV_CHILD)
3594	for (i = EV_PID_HASHSIZE; i--; )	3778	for (i = (EV_PID_HASHSIZE); i--; )
3595	for (wl = childs [i]; wl; )	3779	for (wl = childs [i]; wl; )
3596	{	3780	{
3597	wn = wl->next;	3781	wn = wl->next;
3598	cb (EV_A_ EV_CHILD, wl);	3782	cb (EV_A_ EV_CHILD, wl);
3599	wl = wn;	3783	wl = wn;
3600	}	3784	}
		3785	#endif
3601	/* EV_STAT 0x00001000 /* stat data changed */	3786	/* EV_STAT 0x00001000 /* stat data changed */
3602	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3787	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3603	}	3788	}
3604	#endif	3789	#endif
3605		3790

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Comparing libev/ev.c (file contents): Revision 1.310 by root, Sun Jul 26 04:43:03 2009 UTC vs. Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.310 by root, Sun Jul 26 04:43:03 2009 UTC vs.
Revision 1.343 by root, Fri Apr 2 21:03:46 2010 UTC