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Comparing libev/ev.c (file contents):
Revision 1.295 by root, Wed Jul 8 04:29:31 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
		149	# else
		150	# undef EV_USE_SIGNALFD
		151	# define EV_USE_SIGNALFD 0
136	# endif	152	# endif
137		153
		154	# if HAVE_EVENTFD
138	# ifndef EV_USE_EVENTFD	155	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	156	# define EV_USE_EVENTFD EV_FEATURE_OS
141	# else
142	# define EV_USE_EVENTFD 0
143	# endif	157	# endif
		158	# else
		159	# undef EV_USE_EVENTFD
		160	# define EV_USE_EVENTFD 0
144	# endif	161	# endif
145		162
146	#endif	163	#endif
147		164
148	#include <math.h>	165	#include <math.h>
149	#include <stdlib.h>	166	#include <stdlib.h>
		167	#include <string.h>
150	#include <fcntl.h>	168	#include <fcntl.h>
151	#include <stddef.h>	169	#include <stddef.h>
152		170
153	#include <stdio.h>	171	#include <stdio.h>
154		172
155	#include <assert.h>	173	#include <assert.h>
156	#include <errno.h>	174	#include <errno.h>
157	#include <sys/types.h>	175	#include <sys/types.h>
158	#include <time.h>	176	#include <time.h>
		177	#include <limits.h>
159		178
160	#include <signal.h>	179	#include <signal.h>
161		180
162	#ifdef EV_H	181	#ifdef EV_H
163	# include EV_H	182	# include EV_H
…		…
174	# define WIN32_LEAN_AND_MEAN	193	# define WIN32_LEAN_AND_MEAN
175	# include <windows.h>	194	# include <windows.h>
176	# ifndef EV_SELECT_IS_WINSOCKET	195	# ifndef EV_SELECT_IS_WINSOCKET
177	# define EV_SELECT_IS_WINSOCKET 1	196	# define EV_SELECT_IS_WINSOCKET 1
178	# endif	197	# endif
		198	# undef EV_AVOID_STDIO
179	#endif	199	#endif
180		200
181	/* 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 */
		202
		203	/* try to deduce the maximum number of signals on this platform */
		204	#if defined (EV_NSIG)
		205	/* use what's provided */
		206	#elif defined (NSIG)
		207	# define EV_NSIG (NSIG)
		208	#elif defined(_NSIG)
		209	# define EV_NSIG (_NSIG)
		210	#elif defined (SIGMAX)
		211	# define EV_NSIG (SIGMAX+1)
		212	#elif defined (SIG_MAX)
		213	# define EV_NSIG (SIG_MAX+1)
		214	#elif defined (_SIG_MAX)
		215	# define EV_NSIG (_SIG_MAX+1)
		216	#elif defined (MAXSIG)
		217	# define EV_NSIG (MAXSIG+1)
		218	#elif defined (MAX_SIG)
		219	# define EV_NSIG (MAX_SIG+1)
		220	#elif defined (SIGARRAYSIZE)
		221	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		222	#elif defined (_sys_nsig)
		223	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		224	#else
		225	# error "unable to find value for NSIG, please report"
		226	/* to make it compile regardless, just remove the above line, */
		227	/* but consider reporting it, too! :) */
		228	# define EV_NSIG 65
		229	#endif
182		230
183	#ifndef EV_USE_CLOCK_SYSCALL	231	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	232	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	233	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186	# else	234	# else
187	# define EV_USE_CLOCK_SYSCALL 0	235	# define EV_USE_CLOCK_SYSCALL 0
188	# endif	236	# endif
189	#endif	237	#endif
190		238
191	#ifndef EV_USE_MONOTONIC	239	#ifndef EV_USE_MONOTONIC
192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	240	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193	# define EV_USE_MONOTONIC 1	241	# define EV_USE_MONOTONIC EV_FEATURE_OS
194	# else	242	# else
195	# define EV_USE_MONOTONIC 0	243	# define EV_USE_MONOTONIC 0
196	# endif	244	# endif
197	#endif	245	#endif
198		246
…		…
200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	248	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201	#endif	249	#endif
202		250
203	#ifndef EV_USE_NANOSLEEP	251	#ifndef EV_USE_NANOSLEEP
204	# if _POSIX_C_SOURCE >= 199309L	252	# if _POSIX_C_SOURCE >= 199309L
205	# define EV_USE_NANOSLEEP 1	253	# define EV_USE_NANOSLEEP EV_FEATURE_OS
206	# else	254	# else
207	# define EV_USE_NANOSLEEP 0	255	# define EV_USE_NANOSLEEP 0
208	# endif	256	# endif
209	#endif	257	#endif
210		258
211	#ifndef EV_USE_SELECT	259	#ifndef EV_USE_SELECT
212	# define EV_USE_SELECT 1	260	# define EV_USE_SELECT EV_FEATURE_BACKENDS
213	#endif	261	#endif
214		262
215	#ifndef EV_USE_POLL	263	#ifndef EV_USE_POLL
216	# ifdef _WIN32	264	# ifdef _WIN32
217	# define EV_USE_POLL 0	265	# define EV_USE_POLL 0
218	# else	266	# else
219	# define EV_USE_POLL 1	267	# define EV_USE_POLL EV_FEATURE_BACKENDS
220	# endif	268	# endif
221	#endif	269	#endif
222		270
223	#ifndef EV_USE_EPOLL	271	#ifndef EV_USE_EPOLL
224	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	272	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225	# define EV_USE_EPOLL 1	273	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226	# else	274	# else
227	# define EV_USE_EPOLL 0	275	# define EV_USE_EPOLL 0
228	# endif	276	# endif
229	#endif	277	#endif
230		278
…		…
236	# define EV_USE_PORT 0	284	# define EV_USE_PORT 0
237	#endif	285	#endif
238		286
239	#ifndef EV_USE_INOTIFY	287	#ifndef EV_USE_INOTIFY
240	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	288	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241	# define EV_USE_INOTIFY 1	289	# define EV_USE_INOTIFY EV_FEATURE_OS
242	# else	290	# else
243	# define EV_USE_INOTIFY 0	291	# define EV_USE_INOTIFY 0
244	# endif	292	# endif
245	#endif	293	#endif
246		294
247	#ifndef EV_PID_HASHSIZE	295	#ifndef EV_PID_HASHSIZE
248	# if EV_MINIMAL	296	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
249	# define EV_PID_HASHSIZE 1
250	# else
251	# define EV_PID_HASHSIZE 16
252	# endif
253	#endif	297	#endif
254		298
255	#ifndef EV_INOTIFY_HASHSIZE	299	#ifndef EV_INOTIFY_HASHSIZE
256	# if EV_MINIMAL	300	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
257	# define EV_INOTIFY_HASHSIZE 1
258	# else
259	# define EV_INOTIFY_HASHSIZE 16
260	# endif
261	#endif	301	#endif
262		302
263	#ifndef EV_USE_EVENTFD	303	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	304	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	305	# define EV_USE_EVENTFD EV_FEATURE_OS
266	# else	306	# else
267	# define EV_USE_EVENTFD 0	307	# define EV_USE_EVENTFD 0
		308	# endif
		309	#endif
		310
		311	#ifndef EV_USE_SIGNALFD
		312	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		313	# define EV_USE_SIGNALFD EV_FEATURE_OS
		314	# else
		315	# define EV_USE_SIGNALFD 0
268	# endif	316	# endif
269	#endif	317	#endif
270		318
271	#if 0 /* debugging */	319	#if 0 /* debugging */
272	# define EV_VERIFY 3	320	# define EV_VERIFY 3
273	# define EV_USE_4HEAP 1	321	# define EV_USE_4HEAP 1
274	# define EV_HEAP_CACHE_AT 1	322	# define EV_HEAP_CACHE_AT 1
275	#endif	323	#endif
276		324
277	#ifndef EV_VERIFY	325	#ifndef EV_VERIFY
278	# define EV_VERIFY !EV_MINIMAL	326	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279	#endif	327	#endif
280		328
281	#ifndef EV_USE_4HEAP	329	#ifndef EV_USE_4HEAP
282	# define EV_USE_4HEAP !EV_MINIMAL	330	# define EV_USE_4HEAP EV_FEATURE_DATA
283	#endif	331	#endif
284		332
285	#ifndef EV_HEAP_CACHE_AT	333	#ifndef EV_HEAP_CACHE_AT
286	# define EV_HEAP_CACHE_AT !EV_MINIMAL	334	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287	#endif	335	#endif
288		336
289	/* 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, */
290	/* which makes programs even slower. might work on other unices, too. */	338	/* which makes programs even slower. might work on other unices, too. */
291	#if EV_USE_CLOCK_SYSCALL	339	#if EV_USE_CLOCK_SYSCALL
…		…
300	# endif	348	# endif
301	#endif	349	#endif
302		350
303	/* 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 */
304		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
305	#ifndef CLOCK_MONOTONIC	359	#ifndef CLOCK_MONOTONIC
306	# undef EV_USE_MONOTONIC	360	# undef EV_USE_MONOTONIC
307	# define EV_USE_MONOTONIC 0	361	# define EV_USE_MONOTONIC 0
308	#endif	362	#endif
309		363
…		…
339	#endif	393	#endif
340		394
341	#if EV_USE_EVENTFD	395	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	396	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	397	# include <stdint.h>
		398	# ifndef EFD_NONBLOCK
		399	# define EFD_NONBLOCK O_NONBLOCK
		400	# endif
		401	# ifndef EFD_CLOEXEC
		402	# ifdef O_CLOEXEC
		403	# define EFD_CLOEXEC O_CLOEXEC
		404	# else
		405	# define EFD_CLOEXEC 02000000
		406	# endif
		407	# endif
344	# ifdef __cplusplus	408	# ifdef __cplusplus
345	extern "C" {	409	extern "C" {
346	# endif	410	# endif
347	int eventfd (unsigned int initval, int flags);	411	int (eventfd) (unsigned int initval, int flags);
348	# ifdef __cplusplus	412	# ifdef __cplusplus
349	}	413	}
350	# endif	414	# endif
351	#endif	415	#endif
352		416
		417	#if EV_USE_SIGNALFD
		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
		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
		445
353	/**/	446	/**/
354		447
355	#if EV_VERIFY >= 3	448	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	449	# define EV_FREQUENT_CHECK ev_verify (EV_A)
357	#else	450	#else
358	# define EV_FREQUENT_CHECK do { } while (0)	451	# define EV_FREQUENT_CHECK do { } while (0)
359	#endif	452	#endif
360		453
361	/*	454	/*
…		…
368	*/	461	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	462	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		463
371	#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) */
372	#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) */
373	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374		466
375	#if __GNUC__ >= 4	467	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	468	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	469	# define noinline __attribute__ ((noinline))
378	#else	470	#else
…		…
385		477
386	#define expect_false(expr) expect ((expr) != 0, 0)	478	#define expect_false(expr) expect ((expr) != 0, 0)
387	#define expect_true(expr) expect ((expr) != 0, 1)	479	#define expect_true(expr) expect ((expr) != 0, 1)
388	#define inline_size static inline	480	#define inline_size static inline
389		481
390	#if EV_MINIMAL	482	#if EV_FEATURE_CODE
		483	# define inline_speed static inline
		484	#else
391	# define inline_speed static noinline	485	# define inline_speed static noinline
392	#else
393	# define inline_speed static inline
394	#endif	486	#endif
395		487
396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	488	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397		489
398	#if EV_MINPRI == EV_MAXPRI	490	#if EV_MINPRI == EV_MAXPRI
…		…
419		511
420	#if EV_USE_MONOTONIC	512	#if EV_USE_MONOTONIC
421	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? */
422	#endif	514	#endif
423		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
424	#ifdef _WIN32	526	#ifdef _WIN32
425	# include "ev_win32.c"	527	# include "ev_win32.c"
426	#endif	528	#endif
427		529
428	/*****************************************************************************/	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
429		539
430	static void (*syserr_cb)(const char *msg);	540	static void (*syserr_cb)(const char *msg);
431		541
432	void	542	void
433	ev_set_syserr_cb (void (*cb)(const char *msg))	543	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
443		553
444	if (syserr_cb)	554	if (syserr_cb)
445	syserr_cb (msg);	555	syserr_cb (msg);
446	else	556	else
447	{	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
448	perror (msg);	566	perror (msg);
		567	#endif
449	abort ();	568	abort ();
450	}	569	}
451	}	570	}
452		571
453	static void *	572	static void *
454	ev_realloc_emul (void *ptr, long size)	573	ev_realloc_emul (void *ptr, long size)
455	{	574	{
		575	#if __GLIBC__
		576	return realloc (ptr, size);
		577	#else
456	/* some systems, notably openbsd and darwin, fail to properly	578	/* some systems, notably openbsd and darwin, fail to properly
457	* 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
458	* the single unix specification, so work around them here.	580	* the single unix specification, so work around them here.
459	*/	581	*/
460		582
461	if (size)	583	if (size)
462	return realloc (ptr, size);	584	return realloc (ptr, size);
463		585
464	free (ptr);	586	free (ptr);
465	return 0;	587	return 0;
		588	#endif
466	}	589	}
467		590
468	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	591	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
469		592
470	void	593	void
…		…
478	{	601	{
479	ptr = alloc (ptr, size);	602	ptr = alloc (ptr, size);
480		603
481	if (!ptr && size)	604	if (!ptr && size)
482	{	605	{
		606	#if EV_AVOID_STDIO
		607	ev_printerr ("libev: memory allocation failed, aborting.\n");
		608	#else
483	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	609	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		610	#endif
484	abort ();	611	abort ();
485	}	612	}
486		613
487	return ptr;	614	return ptr;
488	}	615	}
…		…
490	#define ev_malloc(size) ev_realloc (0, (size))	617	#define ev_malloc(size) ev_realloc (0, (size))
491	#define ev_free(ptr) ev_realloc ((ptr), 0)	618	#define ev_free(ptr) ev_realloc ((ptr), 0)
492		619
493	/*****************************************************************************/	620	/*****************************************************************************/
494		621
		622	/* set in reify when reification needed */
		623	#define EV_ANFD_REIFY 1
		624
495	/* file descriptor info structure */	625	/* file descriptor info structure */
496	typedef struct	626	typedef struct
497	{	627	{
498	WL head;	628	WL head;
499	unsigned char events; /* the events watched for */	629	unsigned char events; /* the events watched for */
500	unsigned char reify; /* flag set when this ANFD needs reification */	630	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
501	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	631	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
502	unsigned char unused;	632	unsigned char unused;
503	#if EV_USE_EPOLL	633	#if EV_USE_EPOLL
504	unsigned int egen; /* generation counter to counter epoll bugs */	634	unsigned int egen; /* generation counter to counter epoll bugs */
505	#endif	635	#endif
…		…
567		697
568	static int ev_default_loop_ptr;	698	static int ev_default_loop_ptr;
569		699
570	#endif	700	#endif
571		701
		702	#if EV_FEATURE_API
		703	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		704	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		705	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		706	#else
		707	# define EV_RELEASE_CB (void)0
		708	# define EV_ACQUIRE_CB (void)0
		709	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		710	#endif
		711
		712	#define EVUNLOOP_RECURSE 0x80
		713
572	/*****************************************************************************/	714	/*****************************************************************************/
573		715
574	#ifndef EV_HAVE_EV_TIME	716	#ifndef EV_HAVE_EV_TIME
575	ev_tstamp	717	ev_tstamp
576	ev_time (void)	718	ev_time (void)
…		…
632		774
633	tv.tv_sec = (time_t)delay;	775	tv.tv_sec = (time_t)delay;
634	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	776	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
635		777
636	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	778	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
637	/* somehting not guaranteed by newer posix versions, but guaranteed */	779	/* something not guaranteed by newer posix versions, but guaranteed */
638	/* by older ones */	780	/* by older ones */
639	select (0, 0, 0, 0, &tv);	781	select (0, 0, 0, 0, &tv);
640	#endif	782	#endif
641	}	783	}
642	}	784	}
…		…
750	}	892	}
751		893
752	/*****************************************************************************/	894	/*****************************************************************************/
753		895
754	inline_speed void	896	inline_speed void
755	fd_event (EV_P_ int fd, int revents)	897	fd_event_nocheck (EV_P_ int fd, int revents)
756	{	898	{
757	ANFD *anfd = anfds + fd;	899	ANFD *anfd = anfds + fd;
758	ev_io *w;	900	ev_io *w;
759		901
760	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)
…		…
764	if (ev)	906	if (ev)
765	ev_feed_event (EV_A_ (W)w, ev);	907	ev_feed_event (EV_A_ (W)w, ev);
766	}	908	}
767	}	909	}
768		910
		911	/* do not submit kernel events for fds that have reify set */
		912	/* because that means they changed while we were polling for new events */
		913	inline_speed void
		914	fd_event (EV_P_ int fd, int revents)
		915	{
		916	ANFD *anfd = anfds + fd;
		917
		918	if (expect_true (!anfd->reify))
		919	fd_event_nocheck (EV_A_ fd, revents);
		920	}
		921
769	void	922	void
770	ev_feed_fd_event (EV_P_ int fd, int revents)	923	ev_feed_fd_event (EV_P_ int fd, int revents)
771	{	924	{
772	if (fd >= 0 && fd < anfdmax)	925	if (fd >= 0 && fd < anfdmax)
773	fd_event (EV_A_ fd, revents);	926	fd_event_nocheck (EV_A_ fd, revents);
774	}	927	}
775		928
776	/* make sure the external fd watch events are in-sync */	929	/* make sure the external fd watch events are in-sync */
777	/* with the kernel/libev internal state */	930	/* with the kernel/libev internal state */
778	inline_size void	931	inline_size void
…		…
793		946
794	#if EV_SELECT_IS_WINSOCKET	947	#if EV_SELECT_IS_WINSOCKET
795	if (events)	948	if (events)
796	{	949	{
797	unsigned long arg;	950	unsigned long arg;
798	#ifdef EV_FD_TO_WIN32_HANDLE
799	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	951	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
800	#else
801	anfd->handle = _get_osfhandle (fd);
802	#endif
803	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	952	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
804	}	953	}
805	#endif	954	#endif
806		955
807	{	956	{
…		…
845	ev_io_stop (EV_A_ w);	994	ev_io_stop (EV_A_ w);
846	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);
847	}	996	}
848	}	997	}
849		998
850	/* check whether the given fd is atcually valid, for error recovery */	999	/* check whether the given fd is actually valid, for error recovery */
851	inline_size int	1000	inline_size int
852	fd_valid (int fd)	1001	fd_valid (int fd)
853	{	1002	{
854	#ifdef _WIN32	1003	#ifdef _WIN32
855	return _get_osfhandle (fd) != -1;	1004	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
856	#else	1005	#else
857	return fcntl (fd, F_GETFD) != -1;	1006	return fcntl (fd, F_GETFD) != -1;
858	#endif	1007	#endif
859	}	1008	}
860		1009
…		…
878		1027
879	for (fd = anfdmax; fd--; )	1028	for (fd = anfdmax; fd--; )
880	if (anfds [fd].events)	1029	if (anfds [fd].events)
881	{	1030	{
882	fd_kill (EV_A_ fd);	1031	fd_kill (EV_A_ fd);
883	return;	1032	break;
884	}	1033	}
885	}	1034	}
886		1035
887	/* usually called after fork if backend needs to re-arm all fds from scratch */	1036	/* usually called after fork if backend needs to re-arm all fds from scratch */
888	static void noinline	1037	static void noinline
…		…
893	for (fd = 0; fd < anfdmax; ++fd)	1042	for (fd = 0; fd < anfdmax; ++fd)
894	if (anfds [fd].events)	1043	if (anfds [fd].events)
895	{	1044	{
896	anfds [fd].events = 0;	1045	anfds [fd].events = 0;
897	anfds [fd].emask = 0;	1046	anfds [fd].emask = 0;
898	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1047	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
899	}	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
900	}	1063	}
901		1064
902	/*****************************************************************************/	1065	/*****************************************************************************/
903		1066
904	/*	1067	/*
…		…
978		1141
979	for (;;)	1142	for (;;)
980	{	1143	{
981	int c = k << 1;	1144	int c = k << 1;
982		1145
983	if (c > N + HEAP0 - 1)	1146	if (c >= N + HEAP0)
984	break;	1147	break;
985		1148
986	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1149	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
987	? 1 : 0;	1150	? 1 : 0;
988		1151
…		…
1024		1187
1025	/* move an element suitably so it is in a correct place */	1188	/* move an element suitably so it is in a correct place */
1026	inline_size void	1189	inline_size void
1027	adjustheap (ANHE *heap, int N, int k)	1190	adjustheap (ANHE *heap, int N, int k)
1028	{	1191	{
1029	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1192	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1030	upheap (heap, k);	1193	upheap (heap, k);
1031	else	1194	else
1032	downheap (heap, N, k);	1195	downheap (heap, N, k);
1033	}	1196	}
1034		1197
…		…
1047	/*****************************************************************************/	1210	/*****************************************************************************/
1048		1211
1049	/* associate signal watchers to a signal signal */	1212	/* associate signal watchers to a signal signal */
1050	typedef struct	1213	typedef struct
1051	{	1214	{
		1215	EV_ATOMIC_T pending;
		1216	#if EV_MULTIPLICITY
		1217	EV_P;
		1218	#endif
1052	WL head;	1219	WL head;
1053	EV_ATOMIC_T gotsig;
1054	} ANSIG;	1220	} ANSIG;
1055		1221
1056	static ANSIG *signals;	1222	static ANSIG signals [EV_NSIG - 1];
1057	static int signalmax;
1058
1059	static EV_ATOMIC_T gotsig;
1060		1223
1061	/*****************************************************************************/	1224	/*****************************************************************************/
1062		1225
1063	/* used to prepare libev internal fd's */	1226	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1064	/* this is not fork-safe */
1065	inline_speed void
1066	fd_intern (int fd)
1067	{
1068	#ifdef _WIN32
1069	unsigned long arg = 1;
1070	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1071	#else
1072	fcntl (fd, F_SETFD, FD_CLOEXEC);
1073	fcntl (fd, F_SETFL, O_NONBLOCK);
1074	#endif
1075	}
1076		1227
1077	static void noinline	1228	static void noinline
1078	evpipe_init (EV_P)	1229	evpipe_init (EV_P)
1079	{	1230	{
1080	if (!ev_is_active (&pipe_w))	1231	if (!ev_is_active (&pipe_w))
1081	{	1232	{
1082	#if EV_USE_EVENTFD	1233	# if EV_USE_EVENTFD
		1234	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1235	if (evfd < 0 && errno == EINVAL)
1083	if ((evfd = eventfd (0, 0)) >= 0)	1236	evfd = eventfd (0, 0);
		1237
		1238	if (evfd >= 0)
1084	{	1239	{
1085	evpipe [0] = -1;	1240	evpipe [0] = -1;
1086	fd_intern (evfd);	1241	fd_intern (evfd); /* doing it twice doesn't hurt */
1087	ev_io_set (&pipe_w, evfd, EV_READ);	1242	ev_io_set (&pipe_w, evfd, EV_READ);
1088	}	1243	}
1089	else	1244	else
1090	#endif	1245	# endif
1091	{	1246	{
1092	while (pipe (evpipe))	1247	while (pipe (evpipe))
1093	ev_syserr ("(libev) error creating signal/async pipe");	1248	ev_syserr ("(libev) error creating signal/async pipe");
1094		1249
1095	fd_intern (evpipe [0]);	1250	fd_intern (evpipe [0]);
…		…
1106	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1261	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1107	{	1262	{
1108	if (!*flag)	1263	if (!*flag)
1109	{	1264	{
1110	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;
1111		1267
1112	*flag = 1;	1268	*flag = 1;
1113		1269
1114	#if EV_USE_EVENTFD	1270	#if EV_USE_EVENTFD
1115	if (evfd >= 0)	1271	if (evfd >= 0)
…		…
1117	uint64_t counter = 1;	1273	uint64_t counter = 1;
1118	write (evfd, &counter, sizeof (uint64_t));	1274	write (evfd, &counter, sizeof (uint64_t));
1119	}	1275	}
1120	else	1276	else
1121	#endif	1277	#endif
1122	write (evpipe [1], &old_errno, 1);	1278	write (evpipe [1], &dummy, 1);
1123		1279
1124	errno = old_errno;	1280	errno = old_errno;
1125	}	1281	}
1126	}	1282	}
1127		1283
1128	/* called whenever the libev signal pipe */	1284	/* called whenever the libev signal pipe */
1129	/* got some events (signal, async) */	1285	/* got some events (signal, async) */
1130	static void	1286	static void
1131	pipecb (EV_P_ ev_io *iow, int revents)	1287	pipecb (EV_P_ ev_io *iow, int revents)
1132	{	1288	{
		1289	int i;
		1290
1133	#if EV_USE_EVENTFD	1291	#if EV_USE_EVENTFD
1134	if (evfd >= 0)	1292	if (evfd >= 0)
1135	{	1293	{
1136	uint64_t counter;	1294	uint64_t counter;
1137	read (evfd, &counter, sizeof (uint64_t));	1295	read (evfd, &counter, sizeof (uint64_t));
…		…
1141	{	1299	{
1142	char dummy;	1300	char dummy;
1143	read (evpipe [0], &dummy, 1);	1301	read (evpipe [0], &dummy, 1);
1144	}	1302	}
1145		1303
1146	if (gotsig && ev_is_default_loop (EV_A))	1304	if (sig_pending)
1147	{	1305	{
1148	int signum;	1306	sig_pending = 0;
1149	gotsig = 0;
1150		1307
1151	for (signum = signalmax; signum--; )	1308	for (i = EV_NSIG - 1; i--; )
1152	if (signals [signum].gotsig)	1309	if (expect_false (signals [i].pending))
1153	ev_feed_signal_event (EV_A_ signum + 1);	1310	ev_feed_signal_event (EV_A_ i + 1);
1154	}	1311	}
1155		1312
1156	#if EV_ASYNC_ENABLE	1313	#if EV_ASYNC_ENABLE
1157	if (gotasync)	1314	if (async_pending)
1158	{	1315	{
1159	int i;	1316	async_pending = 0;
1160	gotasync = 0;
1161		1317
1162	for (i = asynccnt; i--; )	1318	for (i = asynccnt; i--; )
1163	if (asyncs [i]->sent)	1319	if (asyncs [i]->sent)
1164	{	1320	{
1165	asyncs [i]->sent = 0;	1321	asyncs [i]->sent = 0;
…		…
1173		1329
1174	static void	1330	static void
1175	ev_sighandler (int signum)	1331	ev_sighandler (int signum)
1176	{	1332	{
1177	#if EV_MULTIPLICITY	1333	#if EV_MULTIPLICITY
1178	struct ev_loop *loop = &default_loop_struct;	1334	EV_P = signals [signum - 1].loop;
1179	#endif	1335	#endif
1180		1336
1181	#if _WIN32	1337	#ifdef _WIN32
1182	signal (signum, ev_sighandler);	1338	signal (signum, ev_sighandler);
1183	#endif	1339	#endif
1184		1340
1185	signals [signum - 1].gotsig = 1;	1341	signals [signum - 1].pending = 1;
1186	evpipe_write (EV_A_ &gotsig);	1342	evpipe_write (EV_A_ &sig_pending);
1187	}	1343	}
1188		1344
1189	void noinline	1345	void noinline
1190	ev_feed_signal_event (EV_P_ int signum)	1346	ev_feed_signal_event (EV_P_ int signum)
1191	{	1347	{
1192	WL w;	1348	WL w;
1193		1349
		1350	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1351	return;
		1352
		1353	--signum;
		1354
1194	#if EV_MULTIPLICITY	1355	#if EV_MULTIPLICITY
1195	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1356	/* it is permissible to try to feed a signal to the wrong loop */
1196	#endif	1357	/* or, likely more useful, feeding a signal nobody is waiting for */
1197		1358
1198	--signum;	1359	if (expect_false (signals [signum].loop != EV_A))
1199
1200	if (signum < 0 || signum >= signalmax)
1201	return;	1360	return;
		1361	#endif
1202		1362
1203	signals [signum].gotsig = 0;	1363	signals [signum].pending = 0;
1204		1364
1205	for (w = signals [signum].head; w; w = w->next)	1365	for (w = signals [signum].head; w; w = w->next)
1206	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1366	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1207	}	1367	}
1208		1368
		1369	#if EV_USE_SIGNALFD
		1370	static void
		1371	sigfdcb (EV_P_ ev_io *iow, int revents)
		1372	{
		1373	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1374
		1375	for (;;)
		1376	{
		1377	ssize_t res = read (sigfd, si, sizeof (si));
		1378
		1379	/* not ISO-C, as res might be -1, but works with SuS */
		1380	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1381	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1382
		1383	if (res < (ssize_t)sizeof (si))
		1384	break;
		1385	}
		1386	}
		1387	#endif
		1388
		1389	#endif
		1390
1209	/*****************************************************************************/	1391	/*****************************************************************************/
1210		1392
		1393	#if EV_CHILD_ENABLE
1211	static WL childs [EV_PID_HASHSIZE];	1394	static WL childs [EV_PID_HASHSIZE];
1212
1213	#ifndef _WIN32
1214		1395
1215	static ev_signal childev;	1396	static ev_signal childev;
1216		1397
1217	#ifndef WIFCONTINUED	1398	#ifndef WIFCONTINUED
1218	# define WIFCONTINUED(status) 0	1399	# define WIFCONTINUED(status) 0
…		…
1223	child_reap (EV_P_ int chain, int pid, int status)	1404	child_reap (EV_P_ int chain, int pid, int status)
1224	{	1405	{
1225	ev_child *w;	1406	ev_child *w;
1226	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1407	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1227		1408
1228	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)
1229	{	1410	{
1230	if ((w->pid == pid || !w->pid)	1411	if ((w->pid == pid || !w->pid)
1231	&& (!traced || (w->flags & 1)))	1412	&& (!traced || (w->flags & 1)))
1232	{	1413	{
1233	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 */
…		…
1258	/* 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 */
1259	/* 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 */
1260	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1441	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1261		1442
1262	child_reap (EV_A_ pid, pid, status);	1443	child_reap (EV_A_ pid, pid, status);
1263	if (EV_PID_HASHSIZE > 1)	1444	if ((EV_PID_HASHSIZE) > 1)
1264	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 */
1265	}	1446	}
1266		1447
1267	#endif	1448	#endif
1268		1449
…		…
1335	#ifdef __APPLE__	1516	#ifdef __APPLE__
1336	/* only select works correctly on that "unix-certified" platform */	1517	/* only select works correctly on that "unix-certified" platform */
1337	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1518	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1338	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 */
1339	#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
1340		1524
1341	return flags;	1525	return flags;
1342	}	1526	}
1343		1527
1344	unsigned int	1528	unsigned int
…		…
1357	ev_backend (EV_P)	1541	ev_backend (EV_P)
1358	{	1542	{
1359	return backend;	1543	return backend;
1360	}	1544	}
1361		1545
		1546	#if EV_FEATURE_API
1362	unsigned int	1547	unsigned int
1363	ev_loop_count (EV_P)	1548	ev_iteration (EV_P)
1364	{	1549	{
1365	return loop_count;	1550	return loop_count;
1366	}	1551	}
1367		1552
1368	unsigned int	1553	unsigned int
1369	ev_loop_depth (EV_P)	1554	ev_depth (EV_P)
1370	{	1555	{
1371	return loop_depth;	1556	return loop_depth;
1372	}	1557	}
1373		1558
1374	void	1559	void
…		…
1380	void	1565	void
1381	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1566	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1382	{	1567	{
1383	timeout_blocktime = interval;	1568	timeout_blocktime = interval;
1384	}	1569	}
		1570
		1571	void
		1572	ev_set_userdata (EV_P_ void *data)
		1573	{
		1574	userdata = data;
		1575	}
		1576
		1577	void *
		1578	ev_userdata (EV_P)
		1579	{
		1580	return userdata;
		1581	}
		1582
		1583	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1584	{
		1585	invoke_cb = invoke_pending_cb;
		1586	}
		1587
		1588	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1589	{
		1590	release_cb = release;
		1591	acquire_cb = acquire;
		1592	}
		1593	#endif
1385		1594
1386	/* initialise a loop structure, must be zero-initialised */	1595	/* initialise a loop structure, must be zero-initialised */
1387	static void noinline	1596	static void noinline
1388	loop_init (EV_P_ unsigned int flags)	1597	loop_init (EV_P_ unsigned int flags)
1389	{	1598	{
…		…
1407	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1616	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1408	have_monotonic = 1;	1617	have_monotonic = 1;
1409	}	1618	}
1410	#endif	1619	#endif
1411		1620
		1621	/* pid check not overridable via env */
		1622	#ifndef _WIN32
		1623	if (flags & EVFLAG_FORKCHECK)
		1624	curpid = getpid ();
		1625	#endif
		1626
		1627	if (!(flags & EVFLAG_NOENV)
		1628	&& !enable_secure ()
		1629	&& getenv ("LIBEV_FLAGS"))
		1630	flags = atoi (getenv ("LIBEV_FLAGS"));
		1631
1412	ev_rt_now = ev_time ();	1632	ev_rt_now = ev_time ();
1413	mn_now = get_clock ();	1633	mn_now = get_clock ();
1414	now_floor = mn_now;	1634	now_floor = mn_now;
1415	rtmn_diff = ev_rt_now - mn_now;	1635	rtmn_diff = ev_rt_now - mn_now;
		1636	#if EV_FEATURE_API
		1637	invoke_cb = ev_invoke_pending;
		1638	#endif
1416		1639
1417	io_blocktime = 0.;	1640	io_blocktime = 0.;
1418	timeout_blocktime = 0.;	1641	timeout_blocktime = 0.;
1419	backend = 0;	1642	backend = 0;
1420	backend_fd = -1;	1643	backend_fd = -1;
1421	gotasync = 0;	1644	sig_pending = 0;
		1645	#if EV_ASYNC_ENABLE
		1646	async_pending = 0;
		1647	#endif
1422	#if EV_USE_INOTIFY	1648	#if EV_USE_INOTIFY
1423	fs_fd = -2;	1649	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1424	#endif	1650	#endif
1425		1651	#if EV_USE_SIGNALFD
1426	/* pid check not overridable via env */	1652	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1427	#ifndef _WIN32
1428	if (flags & EVFLAG_FORKCHECK)
1429	curpid = getpid ();
1430	#endif	1653	#endif
1431
1432	if (!(flags & EVFLAG_NOENV)
1433	&& !enable_secure ()
1434	&& getenv ("LIBEV_FLAGS"))
1435	flags = atoi (getenv ("LIBEV_FLAGS"));
1436		1654
1437	if (!(flags & 0x0000ffffU))	1655	if (!(flags & 0x0000ffffU))
1438	flags |= ev_recommended_backends ();	1656	flags |= ev_recommended_backends ();
1439		1657
1440	#if EV_USE_PORT	1658	#if EV_USE_PORT
…		…
1453	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1671	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1454	#endif	1672	#endif
1455		1673
1456	ev_prepare_init (&pending_w, pendingcb);	1674	ev_prepare_init (&pending_w, pendingcb);
1457		1675
		1676	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1458	ev_init (&pipe_w, pipecb);	1677	ev_init (&pipe_w, pipecb);
1459	ev_set_priority (&pipe_w, EV_MAXPRI);	1678	ev_set_priority (&pipe_w, EV_MAXPRI);
		1679	#endif
1460	}	1680	}
1461	}	1681	}
1462		1682
1463	/* free up a loop structure */	1683	/* free up a loop structure */
1464	static void noinline	1684	static void noinline
…		…
1466	{	1686	{
1467	int i;	1687	int i;
1468		1688
1469	if (ev_is_active (&pipe_w))	1689	if (ev_is_active (&pipe_w))
1470	{	1690	{
1471	ev_ref (EV_A); /* signal watcher */	1691	/*ev_ref (EV_A);*/
1472	ev_io_stop (EV_A_ &pipe_w);	1692	/*ev_io_stop (EV_A_ &pipe_w);*/
1473		1693
1474	#if EV_USE_EVENTFD	1694	#if EV_USE_EVENTFD
1475	if (evfd >= 0)	1695	if (evfd >= 0)
1476	close (evfd);	1696	close (evfd);
1477	#endif	1697	#endif
1478		1698
1479	if (evpipe [0] >= 0)	1699	if (evpipe [0] >= 0)
1480	{	1700	{
1481	close (evpipe [0]);	1701	EV_WIN32_CLOSE_FD (evpipe [0]);
1482	close (evpipe [1]);	1702	EV_WIN32_CLOSE_FD (evpipe [1]);
1483	}	1703	}
1484	}	1704	}
		1705
		1706	#if EV_USE_SIGNALFD
		1707	if (ev_is_active (&sigfd_w))
		1708	close (sigfd);
		1709	#endif
1485		1710
1486	#if EV_USE_INOTIFY	1711	#if EV_USE_INOTIFY
1487	if (fs_fd >= 0)	1712	if (fs_fd >= 0)
1488	close (fs_fd);	1713	close (fs_fd);
1489	#endif	1714	#endif
…		…
1513	#if EV_IDLE_ENABLE	1738	#if EV_IDLE_ENABLE
1514	array_free (idle, [i]);	1739	array_free (idle, [i]);
1515	#endif	1740	#endif
1516	}	1741	}
1517		1742
1518	ev_free (anfds); anfdmax = 0;	1743	ev_free (anfds); anfds = 0; anfdmax = 0;
1519		1744
1520	/* have to use the microsoft-never-gets-it-right macro */	1745	/* have to use the microsoft-never-gets-it-right macro */
1521	array_free (rfeed, EMPTY);	1746	array_free (rfeed, EMPTY);
1522	array_free (fdchange, EMPTY);	1747	array_free (fdchange, EMPTY);
1523	array_free (timer, EMPTY);	1748	array_free (timer, EMPTY);
…		…
1558		1783
1559	if (ev_is_active (&pipe_w))	1784	if (ev_is_active (&pipe_w))
1560	{	1785	{
1561	/* this "locks" the handlers against writing to the pipe */	1786	/* this "locks" the handlers against writing to the pipe */
1562	/* while we modify the fd vars */	1787	/* while we modify the fd vars */
1563	gotsig = 1;	1788	sig_pending = 1;
1564	#if EV_ASYNC_ENABLE	1789	#if EV_ASYNC_ENABLE
1565	gotasync = 1;	1790	async_pending = 1;
1566	#endif	1791	#endif
1567		1792
1568	ev_ref (EV_A);	1793	ev_ref (EV_A);
1569	ev_io_stop (EV_A_ &pipe_w);	1794	ev_io_stop (EV_A_ &pipe_w);
1570		1795
…		…
1573	close (evfd);	1798	close (evfd);
1574	#endif	1799	#endif
1575		1800
1576	if (evpipe [0] >= 0)	1801	if (evpipe [0] >= 0)
1577	{	1802	{
1578	close (evpipe [0]);	1803	EV_WIN32_CLOSE_FD (evpipe [0]);
1579	close (evpipe [1]);	1804	EV_WIN32_CLOSE_FD (evpipe [1]);
1580	}	1805	}
1581		1806
		1807	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1582	evpipe_init (EV_A);	1808	evpipe_init (EV_A);
1583	/* now iterate over everything, in case we missed something */	1809	/* now iterate over everything, in case we missed something */
1584	pipecb (EV_A_ &pipe_w, EV_READ);	1810	pipecb (EV_A_ &pipe_w, EV_READ);
		1811	#endif
1585	}	1812	}
1586		1813
1587	postfork = 0;	1814	postfork = 0;
1588	}	1815	}
1589		1816
1590	#if EV_MULTIPLICITY	1817	#if EV_MULTIPLICITY
1591		1818
1592	struct ev_loop *	1819	struct ev_loop *
1593	ev_loop_new (unsigned int flags)	1820	ev_loop_new (unsigned int flags)
1594	{	1821	{
1595	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1822	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1596		1823
1597	memset (loop, 0, sizeof (struct ev_loop));	1824	memset (EV_A, 0, sizeof (struct ev_loop));
1598
1599	loop_init (EV_A_ flags);	1825	loop_init (EV_A_ flags);
1600		1826
1601	if (ev_backend (EV_A))	1827	if (ev_backend (EV_A))
1602	return loop;	1828	return EV_A;
1603		1829
1604	return 0;	1830	return 0;
1605	}	1831	}
1606		1832
1607	void	1833	void
…		…
1614	void	1840	void
1615	ev_loop_fork (EV_P)	1841	ev_loop_fork (EV_P)
1616	{	1842	{
1617	postfork = 1; /* must be in line with ev_default_fork */	1843	postfork = 1; /* must be in line with ev_default_fork */
1618	}	1844	}
		1845	#endif /* multiplicity */
1619		1846
1620	#if EV_VERIFY	1847	#if EV_VERIFY
1621	static void noinline	1848	static void noinline
1622	verify_watcher (EV_P_ W w)	1849	verify_watcher (EV_P_ W w)
1623	{	1850	{
…		…
1651	verify_watcher (EV_A_ ws [cnt]);	1878	verify_watcher (EV_A_ ws [cnt]);
1652	}	1879	}
1653	}	1880	}
1654	#endif	1881	#endif
1655		1882
		1883	#if EV_FEATURE_API
1656	void	1884	void
1657	ev_loop_verify (EV_P)	1885	ev_verify (EV_P)
1658	{	1886	{
1659	#if EV_VERIFY	1887	#if EV_VERIFY
1660	int i;	1888	int i;
1661	WL w;	1889	WL w;
1662		1890
…		…
1701	#if EV_ASYNC_ENABLE	1929	#if EV_ASYNC_ENABLE
1702	assert (asyncmax >= asynccnt);	1930	assert (asyncmax >= asynccnt);
1703	array_verify (EV_A_ (W *)asyncs, asynccnt);	1931	array_verify (EV_A_ (W *)asyncs, asynccnt);
1704	#endif	1932	#endif
1705		1933
		1934	#if EV_PREPARE_ENABLE
1706	assert (preparemax >= preparecnt);	1935	assert (preparemax >= preparecnt);
1707	array_verify (EV_A_ (W *)prepares, preparecnt);	1936	array_verify (EV_A_ (W *)prepares, preparecnt);
		1937	#endif
1708		1938
		1939	#if EV_CHECK_ENABLE
1709	assert (checkmax >= checkcnt);	1940	assert (checkmax >= checkcnt);
1710	array_verify (EV_A_ (W *)checks, checkcnt);	1941	array_verify (EV_A_ (W *)checks, checkcnt);
		1942	#endif
1711		1943
1712	# if 0	1944	# if 0
		1945	#if EV_CHILD_ENABLE
1713	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)
1714	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1947	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1715	# endif	1948	#endif
1716	#endif	1949	# endif
		1950	#endif
1717	}	1951	}
1718		1952	#endif
1719	#endif /* multiplicity */
1720		1953
1721	#if EV_MULTIPLICITY	1954	#if EV_MULTIPLICITY
1722	struct ev_loop *	1955	struct ev_loop *
1723	ev_default_loop_init (unsigned int flags)	1956	ev_default_loop_init (unsigned int flags)
1724	#else	1957	#else
…		…
1727	#endif	1960	#endif
1728	{	1961	{
1729	if (!ev_default_loop_ptr)	1962	if (!ev_default_loop_ptr)
1730	{	1963	{
1731	#if EV_MULTIPLICITY	1964	#if EV_MULTIPLICITY
1732	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1965	EV_P = ev_default_loop_ptr = &default_loop_struct;
1733	#else	1966	#else
1734	ev_default_loop_ptr = 1;	1967	ev_default_loop_ptr = 1;
1735	#endif	1968	#endif
1736		1969
1737	loop_init (EV_A_ flags);	1970	loop_init (EV_A_ flags);
1738		1971
1739	if (ev_backend (EV_A))	1972	if (ev_backend (EV_A))
1740	{	1973	{
1741	#ifndef _WIN32	1974	#if EV_CHILD_ENABLE
1742	ev_signal_init (&childev, childcb, SIGCHLD);	1975	ev_signal_init (&childev, childcb, SIGCHLD);
1743	ev_set_priority (&childev, EV_MAXPRI);	1976	ev_set_priority (&childev, EV_MAXPRI);
1744	ev_signal_start (EV_A_ &childev);	1977	ev_signal_start (EV_A_ &childev);
1745	ev_unref (EV_A); /* child watcher should not keep loop alive */	1978	ev_unref (EV_A); /* child watcher should not keep loop alive */
1746	#endif	1979	#endif
…		…
1754		1987
1755	void	1988	void
1756	ev_default_destroy (void)	1989	ev_default_destroy (void)
1757	{	1990	{
1758	#if EV_MULTIPLICITY	1991	#if EV_MULTIPLICITY
1759	struct ev_loop *loop = ev_default_loop_ptr;	1992	EV_P = ev_default_loop_ptr;
1760	#endif	1993	#endif
1761		1994
1762	ev_default_loop_ptr = 0;	1995	ev_default_loop_ptr = 0;
1763		1996
1764	#ifndef _WIN32	1997	#if EV_CHILD_ENABLE
1765	ev_ref (EV_A); /* child watcher */	1998	ev_ref (EV_A); /* child watcher */
1766	ev_signal_stop (EV_A_ &childev);	1999	ev_signal_stop (EV_A_ &childev);
1767	#endif	2000	#endif
1768		2001
1769	loop_destroy (EV_A);	2002	loop_destroy (EV_A);
…		…
1771		2004
1772	void	2005	void
1773	ev_default_fork (void)	2006	ev_default_fork (void)
1774	{	2007	{
1775	#if EV_MULTIPLICITY	2008	#if EV_MULTIPLICITY
1776	struct ev_loop *loop = ev_default_loop_ptr;	2009	EV_P = ev_default_loop_ptr;
1777	#endif	2010	#endif
1778		2011
1779	postfork = 1; /* must be in line with ev_loop_fork */	2012	postfork = 1; /* must be in line with ev_loop_fork */
1780	}	2013	}
1781		2014
…		…
1785	ev_invoke (EV_P_ void *w, int revents)	2018	ev_invoke (EV_P_ void *w, int revents)
1786	{	2019	{
1787	EV_CB_INVOKE ((W)w, revents);	2020	EV_CB_INVOKE ((W)w, revents);
1788	}	2021	}
1789		2022
1790	inline_speed void	2023	unsigned int
1791	call_pending (EV_P)	2024	ev_pending_count (EV_P)
		2025	{
		2026	int pri;
		2027	unsigned int count = 0;
		2028
		2029	for (pri = NUMPRI; pri--; )
		2030	count += pendingcnt [pri];
		2031
		2032	return count;
		2033	}
		2034
		2035	void noinline
		2036	ev_invoke_pending (EV_P)
1792	{	2037	{
1793	int pri;	2038	int pri;
1794		2039
1795	for (pri = NUMPRI; pri--; )	2040	for (pri = NUMPRI; pri--; )
1796	while (pendingcnt [pri])	2041	while (pendingcnt [pri])
…		…
1863	EV_FREQUENT_CHECK;	2108	EV_FREQUENT_CHECK;
1864	feed_reverse (EV_A_ (W)w);	2109	feed_reverse (EV_A_ (W)w);
1865	}	2110	}
1866	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2111	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1867		2112
1868	feed_reverse_done (EV_A_ EV_TIMEOUT);	2113	feed_reverse_done (EV_A_ EV_TIMER);
1869	}	2114	}
1870	}	2115	}
1871		2116
1872	#if EV_PERIODIC_ENABLE	2117	#if EV_PERIODIC_ENABLE
1873	/* make periodics pending */	2118	/* make periodics pending */
…		…
1964	ANHE_at_cache (*he);	2209	ANHE_at_cache (*he);
1965	}	2210	}
1966	}	2211	}
1967		2212
1968	/* fetch new monotonic and realtime times from the kernel */	2213	/* fetch new monotonic and realtime times from the kernel */
1969	/* also detetc if there was a timejump, and act accordingly */	2214	/* also detect if there was a timejump, and act accordingly */
1970	inline_speed void	2215	inline_speed void
1971	time_update (EV_P_ ev_tstamp max_block)	2216	time_update (EV_P_ ev_tstamp max_block)
1972	{	2217	{
1973	#if EV_USE_MONOTONIC	2218	#if EV_USE_MONOTONIC
1974	if (expect_true (have_monotonic))	2219	if (expect_true (have_monotonic))
…		…
2034	}	2279	}
2035		2280
2036	void	2281	void
2037	ev_loop (EV_P_ int flags)	2282	ev_loop (EV_P_ int flags)
2038	{	2283	{
		2284	#if EV_FEATURE_API
2039	++loop_depth;	2285	++loop_depth;
		2286	#endif
		2287
		2288	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
2040		2289
2041	loop_done = EVUNLOOP_CANCEL;	2290	loop_done = EVUNLOOP_CANCEL;
2042		2291
2043	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2292	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2044		2293
2045	do	2294	do
2046	{	2295	{
2047	#if EV_VERIFY >= 2	2296	#if EV_VERIFY >= 2
2048	ev_loop_verify (EV_A);	2297	ev_verify (EV_A);
2049	#endif	2298	#endif
2050		2299
2051	#ifndef _WIN32	2300	#ifndef _WIN32
2052	if (expect_false (curpid)) /* penalise the forking check even more */	2301	if (expect_false (curpid)) /* penalise the forking check even more */
2053	if (expect_false (getpid () != curpid))	2302	if (expect_false (getpid () != curpid))
…		…
2061	/* we might have forked, so queue fork handlers */	2310	/* we might have forked, so queue fork handlers */
2062	if (expect_false (postfork))	2311	if (expect_false (postfork))
2063	if (forkcnt)	2312	if (forkcnt)
2064	{	2313	{
2065	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2314	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2066	call_pending (EV_A);	2315	EV_INVOKE_PENDING;
2067	}	2316	}
2068	#endif	2317	#endif
2069		2318
		2319	#if EV_PREPARE_ENABLE
2070	/* queue prepare watchers (and execute them) */	2320	/* queue prepare watchers (and execute them) */
2071	if (expect_false (preparecnt))	2321	if (expect_false (preparecnt))
2072	{	2322	{
2073	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2323	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2074	call_pending (EV_A);	2324	EV_INVOKE_PENDING;
2075	}	2325	}
		2326	#endif
		2327
		2328	if (expect_false (loop_done))
		2329	break;
2076		2330
2077	/* we might have forked, so reify kernel state if necessary */	2331	/* we might have forked, so reify kernel state if necessary */
2078	if (expect_false (postfork))	2332	if (expect_false (postfork))
2079	loop_fork (EV_A);	2333	loop_fork (EV_A);
2080		2334
…		…
2128	waittime -= sleeptime;	2382	waittime -= sleeptime;
2129	}	2383	}
2130	}	2384	}
2131	}	2385	}
2132		2386
		2387	#if EV_FEATURE_API
2133	++loop_count;	2388	++loop_count;
		2389	#endif
		2390	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2134	backend_poll (EV_A_ waittime);	2391	backend_poll (EV_A_ waittime);
		2392	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2135		2393
2136	/* update ev_rt_now, do magic */	2394	/* update ev_rt_now, do magic */
2137	time_update (EV_A_ waittime + sleeptime);	2395	time_update (EV_A_ waittime + sleeptime);
2138	}	2396	}
2139		2397
…		…
2146	#if EV_IDLE_ENABLE	2404	#if EV_IDLE_ENABLE
2147	/* queue idle watchers unless other events are pending */	2405	/* queue idle watchers unless other events are pending */
2148	idle_reify (EV_A);	2406	idle_reify (EV_A);
2149	#endif	2407	#endif
2150		2408
		2409	#if EV_CHECK_ENABLE
2151	/* queue check watchers, to be executed first */	2410	/* queue check watchers, to be executed first */
2152	if (expect_false (checkcnt))	2411	if (expect_false (checkcnt))
2153	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2412	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2413	#endif
2154		2414
2155	call_pending (EV_A);	2415	EV_INVOKE_PENDING;
2156	}	2416	}
2157	while (expect_true (	2417	while (expect_true (
2158	activecnt	2418	activecnt
2159	&& !loop_done	2419	&& !loop_done
2160	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2420	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2161	));	2421	));
2162		2422
2163	if (loop_done == EVUNLOOP_ONE)	2423	if (loop_done == EVUNLOOP_ONE)
2164	loop_done = EVUNLOOP_CANCEL;	2424	loop_done = EVUNLOOP_CANCEL;
2165		2425
		2426	#if EV_FEATURE_API
2166	--loop_depth;	2427	--loop_depth;
		2428	#endif
2167	}	2429	}
2168		2430
2169	void	2431	void
2170	ev_unloop (EV_P_ int how)	2432	ev_unloop (EV_P_ int how)
2171	{	2433	{
…		…
2222	inline_size void	2484	inline_size void
2223	wlist_del (WL *head, WL elem)	2485	wlist_del (WL *head, WL elem)
2224	{	2486	{
2225	while (*head)	2487	while (*head)
2226	{	2488	{
2227	if (*head == elem)	2489	if (expect_true (*head == elem))
2228	{	2490	{
2229	*head = elem->next;	2491	*head = elem->next;
2230	return;	2492	break;
2231	}	2493	}
2232		2494
2233	head = &(*head)->next;	2495	head = &(*head)->next;
2234	}	2496	}
2235	}	2497	}
…		…
2295		2557
2296	if (expect_false (ev_is_active (w)))	2558	if (expect_false (ev_is_active (w)))
2297	return;	2559	return;
2298		2560
2299	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2561	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2300	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))));
2301		2563
2302	EV_FREQUENT_CHECK;	2564	EV_FREQUENT_CHECK;
2303		2565
2304	ev_start (EV_A_ (W)w, 1);	2566	ev_start (EV_A_ (W)w, 1);
2305	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2567	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2306	wlist_add (&anfds[fd].head, (WL)w);	2568	wlist_add (&anfds[fd].head, (WL)w);
2307		2569
2308	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2570	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2309	w->events &= ~EV__IOFDSET;	2571	w->events &= ~EV__IOFDSET;
2310		2572
2311	EV_FREQUENT_CHECK;	2573	EV_FREQUENT_CHECK;
2312	}	2574	}
2313		2575
…		…
2375	timers [active] = timers [timercnt + HEAP0];	2637	timers [active] = timers [timercnt + HEAP0];
2376	adjustheap (timers, timercnt, active);	2638	adjustheap (timers, timercnt, active);
2377	}	2639	}
2378	}	2640	}
2379		2641
2380	EV_FREQUENT_CHECK;
2381
2382	ev_at (w) -= mn_now;	2642	ev_at (w) -= mn_now;
2383		2643
2384	ev_stop (EV_A_ (W)w);	2644	ev_stop (EV_A_ (W)w);
		2645
		2646	EV_FREQUENT_CHECK;
2385	}	2647	}
2386		2648
2387	void noinline	2649	void noinline
2388	ev_timer_again (EV_P_ ev_timer *w)	2650	ev_timer_again (EV_P_ ev_timer *w)
2389	{	2651	{
…		…
2407	}	2669	}
2408		2670
2409	EV_FREQUENT_CHECK;	2671	EV_FREQUENT_CHECK;
2410	}	2672	}
2411		2673
		2674	ev_tstamp
		2675	ev_timer_remaining (EV_P_ ev_timer *w)
		2676	{
		2677	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2678	}
		2679
2412	#if EV_PERIODIC_ENABLE	2680	#if EV_PERIODIC_ENABLE
2413	void noinline	2681	void noinline
2414	ev_periodic_start (EV_P_ ev_periodic *w)	2682	ev_periodic_start (EV_P_ ev_periodic *w)
2415	{	2683	{
2416	if (expect_false (ev_is_active (w)))	2684	if (expect_false (ev_is_active (w)))
…		…
2462	periodics [active] = periodics [periodiccnt + HEAP0];	2730	periodics [active] = periodics [periodiccnt + HEAP0];
2463	adjustheap (periodics, periodiccnt, active);	2731	adjustheap (periodics, periodiccnt, active);
2464	}	2732	}
2465	}	2733	}
2466		2734
2467	EV_FREQUENT_CHECK;
2468
2469	ev_stop (EV_A_ (W)w);	2735	ev_stop (EV_A_ (W)w);
		2736
		2737	EV_FREQUENT_CHECK;
2470	}	2738	}
2471		2739
2472	void noinline	2740	void noinline
2473	ev_periodic_again (EV_P_ ev_periodic *w)	2741	ev_periodic_again (EV_P_ ev_periodic *w)
2474	{	2742	{
…		…
2480		2748
2481	#ifndef SA_RESTART	2749	#ifndef SA_RESTART
2482	# define SA_RESTART 0	2750	# define SA_RESTART 0
2483	#endif	2751	#endif
2484		2752
		2753	#if EV_SIGNAL_ENABLE
		2754
2485	void noinline	2755	void noinline
2486	ev_signal_start (EV_P_ ev_signal *w)	2756	ev_signal_start (EV_P_ ev_signal *w)
2487	{	2757	{
2488	#if EV_MULTIPLICITY
2489	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2490	#endif
2491	if (expect_false (ev_is_active (w)))	2758	if (expect_false (ev_is_active (w)))
2492	return;	2759	return;
2493		2760
2494	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2761	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2495		2762
2496	evpipe_init (EV_A);	2763	#if EV_MULTIPLICITY
		2764	assert (("libev: a signal must not be attached to two different loops",
		2765	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2497		2766
2498	EV_FREQUENT_CHECK;	2767	signals [w->signum - 1].loop = EV_A;
		2768	#endif
2499		2769
		2770	EV_FREQUENT_CHECK;
		2771
		2772	#if EV_USE_SIGNALFD
		2773	if (sigfd == -2)
2500	{	2774	{
2501	#ifndef _WIN32	2775	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2502	sigset_t full, prev;	2776	if (sigfd < 0 && errno == EINVAL)
2503	sigfillset (&full);	2777	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2504	sigprocmask (SIG_SETMASK, &full, &prev);
2505	#endif
2506		2778
2507	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2779	if (sigfd >= 0)
		2780	{
		2781	fd_intern (sigfd); /* doing it twice will not hurt */
2508		2782
2509	#ifndef _WIN32	2783	sigemptyset (&sigfd_set);
2510	sigprocmask (SIG_SETMASK, &prev, 0);	2784
2511	#endif	2785	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2786	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2787	ev_io_start (EV_A_ &sigfd_w);
		2788	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2789	}
2512	}	2790	}
		2791
		2792	if (sigfd >= 0)
		2793	{
		2794	/* TODO: check .head */
		2795	sigaddset (&sigfd_set, w->signum);
		2796	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2797
		2798	signalfd (sigfd, &sigfd_set, 0);
		2799	}
		2800	#endif
2513		2801
2514	ev_start (EV_A_ (W)w, 1);	2802	ev_start (EV_A_ (W)w, 1);
2515	wlist_add (&signals [w->signum - 1].head, (WL)w);	2803	wlist_add (&signals [w->signum - 1].head, (WL)w);
2516		2804
2517	if (!((WL)w)->next)	2805	if (!((WL)w)->next)
		2806	# if EV_USE_SIGNALFD
		2807	if (sigfd < 0) /*TODO*/
		2808	# endif
2518	{	2809	{
2519	#if _WIN32	2810	# ifdef _WIN32
		2811	evpipe_init (EV_A);
		2812
2520	signal (w->signum, ev_sighandler);	2813	signal (w->signum, ev_sighandler);
2521	#else	2814	# else
2522	struct sigaction sa;	2815	struct sigaction sa;
		2816
		2817	evpipe_init (EV_A);
		2818
2523	sa.sa_handler = ev_sighandler;	2819	sa.sa_handler = ev_sighandler;
2524	sigfillset (&sa.sa_mask);	2820	sigfillset (&sa.sa_mask);
2525	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2821	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2526	sigaction (w->signum, &sa, 0);	2822	sigaction (w->signum, &sa, 0);
		2823
		2824	sigemptyset (&sa.sa_mask);
		2825	sigaddset (&sa.sa_mask, w->signum);
		2826	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2527	#endif	2827	#endif
2528	}	2828	}
2529		2829
2530	EV_FREQUENT_CHECK;	2830	EV_FREQUENT_CHECK;
2531	}	2831	}
2532		2832
2533	void noinline	2833	void noinline
…		…
2541		2841
2542	wlist_del (&signals [w->signum - 1].head, (WL)w);	2842	wlist_del (&signals [w->signum - 1].head, (WL)w);
2543	ev_stop (EV_A_ (W)w);	2843	ev_stop (EV_A_ (W)w);
2544		2844
2545	if (!signals [w->signum - 1].head)	2845	if (!signals [w->signum - 1].head)
		2846	{
		2847	#if EV_MULTIPLICITY
		2848	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2849	#endif
		2850	#if EV_USE_SIGNALFD
		2851	if (sigfd >= 0)
		2852	{
		2853	sigset_t ss;
		2854
		2855	sigemptyset (&ss);
		2856	sigaddset (&ss, w->signum);
		2857	sigdelset (&sigfd_set, w->signum);
		2858
		2859	signalfd (sigfd, &sigfd_set, 0);
		2860	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2861	}
		2862	else
		2863	#endif
2546	signal (w->signum, SIG_DFL);	2864	signal (w->signum, SIG_DFL);
		2865	}
2547		2866
2548	EV_FREQUENT_CHECK;	2867	EV_FREQUENT_CHECK;
2549	}	2868	}
		2869
		2870	#endif
		2871
		2872	#if EV_CHILD_ENABLE
2550		2873
2551	void	2874	void
2552	ev_child_start (EV_P_ ev_child *w)	2875	ev_child_start (EV_P_ ev_child *w)
2553	{	2876	{
2554	#if EV_MULTIPLICITY	2877	#if EV_MULTIPLICITY
…		…
2558	return;	2881	return;
2559		2882
2560	EV_FREQUENT_CHECK;	2883	EV_FREQUENT_CHECK;
2561		2884
2562	ev_start (EV_A_ (W)w, 1);	2885	ev_start (EV_A_ (W)w, 1);
2563	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2886	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2564		2887
2565	EV_FREQUENT_CHECK;	2888	EV_FREQUENT_CHECK;
2566	}	2889	}
2567		2890
2568	void	2891	void
…		…
2572	if (expect_false (!ev_is_active (w)))	2895	if (expect_false (!ev_is_active (w)))
2573	return;	2896	return;
2574		2897
2575	EV_FREQUENT_CHECK;	2898	EV_FREQUENT_CHECK;
2576		2899
2577	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2900	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2578	ev_stop (EV_A_ (W)w);	2901	ev_stop (EV_A_ (W)w);
2579		2902
2580	EV_FREQUENT_CHECK;	2903	EV_FREQUENT_CHECK;
2581	}	2904	}
		2905
		2906	#endif
2582		2907
2583	#if EV_STAT_ENABLE	2908	#if EV_STAT_ENABLE
2584		2909
2585	# ifdef _WIN32	2910	# ifdef _WIN32
2586	# undef lstat	2911	# undef lstat
…		…
2592	#define MIN_STAT_INTERVAL 0.1074891	2917	#define MIN_STAT_INTERVAL 0.1074891
2593		2918
2594	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);
2595		2920
2596	#if EV_USE_INOTIFY	2921	#if EV_USE_INOTIFY
2597	# 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)
2598		2925
2599	static void noinline	2926	static void noinline
2600	infy_add (EV_P_ ev_stat *w)	2927	infy_add (EV_P_ ev_stat *w)
2601	{	2928	{
2602	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);
2603		2930
2604	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 */
2605	{	2951	}
		2952	else
		2953	{
		2954	/* can't use inotify, continue to stat */
2606	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2955	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2607	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2608		2956
2609	/* monitor some parent directory for speedup hints */	2957	/* if path is not there, monitor some parent directory for speedup hints */
2610	/* 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, */
2611	/* but an efficiency issue only */	2959	/* but an efficiency issue only */
2612	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2960	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2613	{	2961	{
2614	char path [4096];	2962	char path [4096];
…		…
2630	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2978	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2631	}	2979	}
2632	}	2980	}
2633		2981
2634	if (w->wd >= 0)	2982	if (w->wd >= 0)
2635	{
2636	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);
2637		2984
2638	/* now local changes will be tracked by inotify, but remote changes won't */	2985	/* now re-arm timer, if required */
2639	/* unless the filesystem it known to be local, we therefore still poll */	2986	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2640	/* also do poll on <2.6.25, but with normal frequency */
2641	struct statfs sfs;
2642
2643	if (fs_2625 && !statfs (w->path, &sfs))
2644	if (sfs.f_type == 0x1373 /* devfs */
2645	|| sfs.f_type == 0xEF53 /* ext2/3 */
2646	|| sfs.f_type == 0x3153464a /* jfs */
2647	|| sfs.f_type == 0x52654973 /* reiser3 */
2648	|| sfs.f_type == 0x01021994 /* tempfs */
2649	|| sfs.f_type == 0x58465342 /* xfs */)
2650	return;
2651
2652	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2653	ev_timer_again (EV_A_ &w->timer);	2987	ev_timer_again (EV_A_ &w->timer);
2654	}	2988	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2655	}	2989	}
2656		2990
2657	static void noinline	2991	static void noinline
2658	infy_del (EV_P_ ev_stat *w)	2992	infy_del (EV_P_ ev_stat *w)
2659	{	2993	{
…		…
2662		2996
2663	if (wd < 0)	2997	if (wd < 0)
2664	return;	2998	return;
2665		2999
2666	w->wd = -2;	3000	w->wd = -2;
2667	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3001	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2668	wlist_del (&fs_hash [slot].head, (WL)w);	3002	wlist_del (&fs_hash [slot].head, (WL)w);
2669		3003
2670	/* remove this watcher, if others are watching it, they will rearm */	3004	/* remove this watcher, if others are watching it, they will rearm */
2671	inotify_rm_watch (fs_fd, wd);	3005	inotify_rm_watch (fs_fd, wd);
2672	}	3006	}
…		…
2674	static void noinline	3008	static void noinline
2675	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)
2676	{	3010	{
2677	if (slot < 0)	3011	if (slot < 0)
2678	/* overflow, need to check for all hash slots */	3012	/* overflow, need to check for all hash slots */
2679	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3013	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2680	infy_wd (EV_A_ slot, wd, ev);	3014	infy_wd (EV_A_ slot, wd, ev);
2681	else	3015	else
2682	{	3016	{
2683	WL w_;	3017	WL w_;
2684		3018
2685	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3019	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2686	{	3020	{
2687	ev_stat *w = (ev_stat *)w_;	3021	ev_stat *w = (ev_stat *)w_;
2688	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 */
2689		3023
2690	if (w->wd == wd || wd == -1)	3024	if (w->wd == wd || wd == -1)
2691	{	3025	{
2692	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3026	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2693	{	3027	{
2694	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);
2695	w->wd = -1;	3029	w->wd = -1;
2696	infy_add (EV_A_ w); /* re-add, no matter what */	3030	infy_add (EV_A_ w); /* re-add, no matter what */
2697	}	3031	}
2698		3032
2699	stat_timer_cb (EV_A_ &w->timer, 0);	3033	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2704		3038
2705	static void	3039	static void
2706	infy_cb (EV_P_ ev_io *w, int revents)	3040	infy_cb (EV_P_ ev_io *w, int revents)
2707	{	3041	{
2708	char buf [EV_INOTIFY_BUFSIZE];	3042	char buf [EV_INOTIFY_BUFSIZE];
2709	struct inotify_event *ev = (struct inotify_event *)buf;
2710	int ofs;	3043	int ofs;
2711	int len = read (fs_fd, buf, sizeof (buf));	3044	int len = read (fs_fd, buf, sizeof (buf));
2712		3045
2713	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);
2714	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;
2715	}	3084	}
2716		3085
2717	inline_size void	3086	inline_size void
2718	check_2625 (EV_P)	3087	ev_check_2625 (EV_P)
2719	{	3088	{
2720	/* kernels < 2.6.25 are borked	3089	/* kernels < 2.6.25 are borked
2721	* 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
2722	*/	3091	*/
2723	struct utsname buf;	3092	if (ev_linux_version () < 0x020619)
2724	int major, minor, micro;
2725
2726	if (uname (&buf))
2727	return;	3093	return;
2728		3094
2729	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2730	return;
2731
2732	if (major < 2
2733	|| (major == 2 && minor < 6)
2734	|| (major == 2 && minor == 6 && micro < 25))
2735	return;
2736
2737	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 ();
2738	}	3107	}
2739		3108
2740	inline_size void	3109	inline_size void
2741	infy_init (EV_P)	3110	infy_init (EV_P)
2742	{	3111	{
2743	if (fs_fd != -2)	3112	if (fs_fd != -2)
2744	return;	3113	return;
2745		3114
2746	fs_fd = -1;	3115	fs_fd = -1;
2747		3116
2748	check_2625 (EV_A);	3117	ev_check_2625 (EV_A);
2749		3118
2750	fs_fd = inotify_init ();	3119	fs_fd = infy_newfd ();
2751		3120
2752	if (fs_fd >= 0)	3121	if (fs_fd >= 0)
2753	{	3122	{
		3123	fd_intern (fs_fd);
2754	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3124	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2755	ev_set_priority (&fs_w, EV_MAXPRI);	3125	ev_set_priority (&fs_w, EV_MAXPRI);
2756	ev_io_start (EV_A_ &fs_w);	3126	ev_io_start (EV_A_ &fs_w);
		3127	ev_unref (EV_A);
2757	}	3128	}
2758	}	3129	}
2759		3130
2760	inline_size void	3131	inline_size void
2761	infy_fork (EV_P)	3132	infy_fork (EV_P)
…		…
2763	int slot;	3134	int slot;
2764		3135
2765	if (fs_fd < 0)	3136	if (fs_fd < 0)
2766	return;	3137	return;
2767		3138
		3139	ev_ref (EV_A);
		3140	ev_io_stop (EV_A_ &fs_w);
2768	close (fs_fd);	3141	close (fs_fd);
2769	fs_fd = inotify_init ();	3142	fs_fd = infy_newfd ();
2770		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
2771	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3152	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2772	{	3153	{
2773	WL w_ = fs_hash [slot].head;	3154	WL w_ = fs_hash [slot].head;
2774	fs_hash [slot].head = 0;	3155	fs_hash [slot].head = 0;
2775		3156
2776	while (w_)	3157	while (w_)
…		…
2781	w->wd = -1;	3162	w->wd = -1;
2782		3163
2783	if (fs_fd >= 0)	3164	if (fs_fd >= 0)
2784	infy_add (EV_A_ w); /* re-add, no matter what */	3165	infy_add (EV_A_ w); /* re-add, no matter what */
2785	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);
2786	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	}
2787	}	3173	}
2788	}	3174	}
2789	}	3175	}
2790		3176
2791	#endif	3177	#endif
…		…
2808	static void noinline	3194	static void noinline
2809	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3195	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2810	{	3196	{
2811	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3197	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2812		3198
2813	/* we copy this here each the time so that */	3199	ev_statdata prev = w->attr;
2814	/* prev has the old value when the callback gets invoked */
2815	w->prev = w->attr;
2816	ev_stat_stat (EV_A_ w);	3200	ev_stat_stat (EV_A_ w);
2817		3201
2818	/* 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 */
2819	if (	3203	if (
2820	w->prev.st_dev != w->attr.st_dev	3204	prev.st_dev != w->attr.st_dev
2821	|| w->prev.st_ino != w->attr.st_ino	3205	|| prev.st_ino != w->attr.st_ino
2822	|| w->prev.st_mode != w->attr.st_mode	3206	|| prev.st_mode != w->attr.st_mode
2823	|| w->prev.st_nlink != w->attr.st_nlink	3207	|| prev.st_nlink != w->attr.st_nlink
2824	|| w->prev.st_uid != w->attr.st_uid	3208	|| prev.st_uid != w->attr.st_uid
2825	|| w->prev.st_gid != w->attr.st_gid	3209	|| prev.st_gid != w->attr.st_gid
2826	|| w->prev.st_rdev != w->attr.st_rdev	3210	|| prev.st_rdev != w->attr.st_rdev
2827	|| w->prev.st_size != w->attr.st_size	3211	|| prev.st_size != w->attr.st_size
2828	|| w->prev.st_atime != w->attr.st_atime	3212	|| prev.st_atime != w->attr.st_atime
2829	|| w->prev.st_mtime != w->attr.st_mtime	3213	|| prev.st_mtime != w->attr.st_mtime
2830	|| w->prev.st_ctime != w->attr.st_ctime	3214	|| prev.st_ctime != w->attr.st_ctime
2831	) {	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
2832	#if EV_USE_INOTIFY	3221	#if EV_USE_INOTIFY
2833	if (fs_fd >= 0)	3222	if (fs_fd >= 0)
2834	{	3223	{
2835	infy_del (EV_A_ w);	3224	infy_del (EV_A_ w);
2836	infy_add (EV_A_ w);	3225	infy_add (EV_A_ w);
…		…
2861		3250
2862	if (fs_fd >= 0)	3251	if (fs_fd >= 0)
2863	infy_add (EV_A_ w);	3252	infy_add (EV_A_ w);
2864	else	3253	else
2865	#endif	3254	#endif
		3255	{
2866	ev_timer_again (EV_A_ &w->timer);	3256	ev_timer_again (EV_A_ &w->timer);
		3257	ev_unref (EV_A);
		3258	}
2867		3259
2868	ev_start (EV_A_ (W)w, 1);	3260	ev_start (EV_A_ (W)w, 1);
2869		3261
2870	EV_FREQUENT_CHECK;	3262	EV_FREQUENT_CHECK;
2871	}	3263	}
…		…
2880	EV_FREQUENT_CHECK;	3272	EV_FREQUENT_CHECK;
2881		3273
2882	#if EV_USE_INOTIFY	3274	#if EV_USE_INOTIFY
2883	infy_del (EV_A_ w);	3275	infy_del (EV_A_ w);
2884	#endif	3276	#endif
		3277
		3278	if (ev_is_active (&w->timer))
		3279	{
		3280	ev_ref (EV_A);
2885	ev_timer_stop (EV_A_ &w->timer);	3281	ev_timer_stop (EV_A_ &w->timer);
		3282	}
2886		3283
2887	ev_stop (EV_A_ (W)w);	3284	ev_stop (EV_A_ (W)w);
2888		3285
2889	EV_FREQUENT_CHECK;	3286	EV_FREQUENT_CHECK;
2890	}	3287	}
…		…
2935		3332
2936	EV_FREQUENT_CHECK;	3333	EV_FREQUENT_CHECK;
2937	}	3334	}
2938	#endif	3335	#endif
2939		3336
		3337	#if EV_PREPARE_ENABLE
2940	void	3338	void
2941	ev_prepare_start (EV_P_ ev_prepare *w)	3339	ev_prepare_start (EV_P_ ev_prepare *w)
2942	{	3340	{
2943	if (expect_false (ev_is_active (w)))	3341	if (expect_false (ev_is_active (w)))
2944	return;	3342	return;
…		…
2970		3368
2971	ev_stop (EV_A_ (W)w);	3369	ev_stop (EV_A_ (W)w);
2972		3370
2973	EV_FREQUENT_CHECK;	3371	EV_FREQUENT_CHECK;
2974	}	3372	}
		3373	#endif
2975		3374
		3375	#if EV_CHECK_ENABLE
2976	void	3376	void
2977	ev_check_start (EV_P_ ev_check *w)	3377	ev_check_start (EV_P_ ev_check *w)
2978	{	3378	{
2979	if (expect_false (ev_is_active (w)))	3379	if (expect_false (ev_is_active (w)))
2980	return;	3380	return;
…		…
3006		3406
3007	ev_stop (EV_A_ (W)w);	3407	ev_stop (EV_A_ (W)w);
3008		3408
3009	EV_FREQUENT_CHECK;	3409	EV_FREQUENT_CHECK;
3010	}	3410	}
		3411	#endif
3011		3412
3012	#if EV_EMBED_ENABLE	3413	#if EV_EMBED_ENABLE
3013	void noinline	3414	void noinline
3014	ev_embed_sweep (EV_P_ ev_embed *w)	3415	ev_embed_sweep (EV_P_ ev_embed *w)
3015	{	3416	{
…		…
3031	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3432	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3032	{	3433	{
3033	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3434	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3034		3435
3035	{	3436	{
3036	struct ev_loop *loop = w->other;	3437	EV_P = w->other;
3037		3438
3038	while (fdchangecnt)	3439	while (fdchangecnt)
3039	{	3440	{
3040	fd_reify (EV_A);	3441	fd_reify (EV_A);
3041	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3442	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3049	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3450	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3050		3451
3051	ev_embed_stop (EV_A_ w);	3452	ev_embed_stop (EV_A_ w);
3052		3453
3053	{	3454	{
3054	struct ev_loop *loop = w->other;	3455	EV_P = w->other;
3055		3456
3056	ev_loop_fork (EV_A);	3457	ev_loop_fork (EV_A);
3057	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3458	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3058	}	3459	}
3059		3460
…		…
3073	{	3474	{
3074	if (expect_false (ev_is_active (w)))	3475	if (expect_false (ev_is_active (w)))
3075	return;	3476	return;
3076		3477
3077	{	3478	{
3078	struct ev_loop *loop = w->other;	3479	EV_P = w->other;
3079	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3480	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3080	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3481	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3081	}	3482	}
3082		3483
3083	EV_FREQUENT_CHECK;	3484	EV_FREQUENT_CHECK;
…		…
3110		3511
3111	ev_io_stop (EV_A_ &w->io);	3512	ev_io_stop (EV_A_ &w->io);
3112	ev_prepare_stop (EV_A_ &w->prepare);	3513	ev_prepare_stop (EV_A_ &w->prepare);
3113	ev_fork_stop (EV_A_ &w->fork);	3514	ev_fork_stop (EV_A_ &w->fork);
3114		3515
		3516	ev_stop (EV_A_ (W)w);
		3517
3115	EV_FREQUENT_CHECK;	3518	EV_FREQUENT_CHECK;
3116	}	3519	}
3117	#endif	3520	#endif
3118		3521
3119	#if EV_FORK_ENABLE	3522	#if EV_FORK_ENABLE
…		…
3195		3598
3196	void	3599	void
3197	ev_async_send (EV_P_ ev_async *w)	3600	ev_async_send (EV_P_ ev_async *w)
3198	{	3601	{
3199	w->sent = 1;	3602	w->sent = 1;
3200	evpipe_write (EV_A_ &gotasync);	3603	evpipe_write (EV_A_ &async_pending);
3201	}	3604	}
3202	#endif	3605	#endif
3203		3606
3204	/*****************************************************************************/	3607	/*****************************************************************************/
3205		3608
…		…
3245	{	3648	{
3246	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));
3247		3650
3248	if (expect_false (!once))	3651	if (expect_false (!once))
3249	{	3652	{
3250	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3653	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3251	return;	3654	return;
3252	}	3655	}
3253		3656
3254	once->cb = cb;	3657	once->cb = cb;
3255	once->arg = arg;	3658	once->arg = arg;
…		…
3342	if (types & EV_ASYNC)	3745	if (types & EV_ASYNC)
3343	for (i = asynccnt; i--; )	3746	for (i = asynccnt; i--; )
3344	cb (EV_A_ EV_ASYNC, asyncs [i]);	3747	cb (EV_A_ EV_ASYNC, asyncs [i]);
3345	#endif	3748	#endif
3346		3749
		3750	#if EV_PREPARE_ENABLE
3347	if (types & EV_PREPARE)	3751	if (types & EV_PREPARE)
3348	for (i = preparecnt; i--; )	3752	for (i = preparecnt; i--; )
3349	#if EV_EMBED_ENABLE	3753	# if EV_EMBED_ENABLE
3350	if (ev_cb (prepares [i]) != embed_prepare_cb)	3754	if (ev_cb (prepares [i]) != embed_prepare_cb)
3351	#endif	3755	# endif
3352	cb (EV_A_ EV_PREPARE, prepares [i]);	3756	cb (EV_A_ EV_PREPARE, prepares [i]);
		3757	#endif
3353		3758
		3759	#if EV_CHECK_ENABLE
3354	if (types & EV_CHECK)	3760	if (types & EV_CHECK)
3355	for (i = checkcnt; i--; )	3761	for (i = checkcnt; i--; )
3356	cb (EV_A_ EV_CHECK, checks [i]);	3762	cb (EV_A_ EV_CHECK, checks [i]);
		3763	#endif
3357		3764
		3765	#if EV_SIGNAL_ENABLE
3358	if (types & EV_SIGNAL)	3766	if (types & EV_SIGNAL)
3359	for (i = 0; i < signalmax; ++i)	3767	for (i = 0; i < EV_NSIG - 1; ++i)
3360	for (wl = signals [i].head; wl; )	3768	for (wl = signals [i].head; wl; )
3361	{	3769	{
3362	wn = wl->next;	3770	wn = wl->next;
3363	cb (EV_A_ EV_SIGNAL, wl);	3771	cb (EV_A_ EV_SIGNAL, wl);
3364	wl = wn;	3772	wl = wn;
3365	}	3773	}
		3774	#endif
3366		3775
		3776	#if EV_CHILD_ENABLE
3367	if (types & EV_CHILD)	3777	if (types & EV_CHILD)
3368	for (i = EV_PID_HASHSIZE; i--; )	3778	for (i = (EV_PID_HASHSIZE); i--; )
3369	for (wl = childs [i]; wl; )	3779	for (wl = childs [i]; wl; )
3370	{	3780	{
3371	wn = wl->next;	3781	wn = wl->next;
3372	cb (EV_A_ EV_CHILD, wl);	3782	cb (EV_A_ EV_CHILD, wl);
3373	wl = wn;	3783	wl = wn;
3374	}	3784	}
		3785	#endif
3375	/* EV_STAT 0x00001000 /* stat data changed */	3786	/* EV_STAT 0x00001000 /* stat data changed */
3376	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3787	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3377	}	3788	}
3378	#endif	3789	#endif
3379		3790

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