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Comparing libev/ev.c (file contents):
Revision 1.292 by root, Mon Jun 29 07:22:56 2009 UTC vs.
Revision 1.341 by root, Tue Mar 16 20:48:29 2010 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008,2009 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
…		…
79	# endif	79	# endif
80	# endif	80	# endif
81		81
82	# ifndef EV_USE_NANOSLEEP	82	# ifndef EV_USE_NANOSLEEP
83	# if HAVE_NANOSLEEP	83	# if HAVE_NANOSLEEP
84	# define EV_USE_NANOSLEEP 1	84	# define EV_USE_NANOSLEEP EV_FEATURE_OS
85	# else	85	# else
86	# define EV_USE_NANOSLEEP 0	86	# define EV_USE_NANOSLEEP 0
87	# endif	87	# endif
88	# endif	88	# endif
89		89
90	# ifndef EV_USE_SELECT	90	# ifndef EV_USE_SELECT
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H	91	# if HAVE_SELECT && HAVE_SYS_SELECT_H
92	# define EV_USE_SELECT 1	92	# define EV_USE_SELECT EV_FEATURE_BACKENDS
93	# else	93	# else
94	# define EV_USE_SELECT 0	94	# define EV_USE_SELECT 0
95	# endif	95	# endif
96	# endif	96	# endif
97		97
98	# ifndef EV_USE_POLL	98	# ifndef EV_USE_POLL
99	# if HAVE_POLL && HAVE_POLL_H	99	# if HAVE_POLL && HAVE_POLL_H
100	# define EV_USE_POLL 1	100	# define EV_USE_POLL EV_FEATURE_BACKENDS
101	# else	101	# else
102	# define EV_USE_POLL 0	102	# define EV_USE_POLL 0
103	# endif	103	# endif
104	# endif	104	# endif
105		105
106	# ifndef EV_USE_EPOLL	106	# ifndef EV_USE_EPOLL
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108	# define EV_USE_EPOLL 1	108	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
109	# else	109	# else
110	# define EV_USE_EPOLL 0	110	# define EV_USE_EPOLL 0
111	# endif	111	# endif
112	# endif	112	# endif
113		113
114	# ifndef EV_USE_KQUEUE	114	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
116	# define EV_USE_KQUEUE 1	116	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
117	# else	117	# else
118	# define EV_USE_KQUEUE 0	118	# define EV_USE_KQUEUE 0
119	# endif	119	# endif
120	# endif	120	# endif
121		121
122	# ifndef EV_USE_PORT	122	# ifndef EV_USE_PORT
123	# if HAVE_PORT_H && HAVE_PORT_CREATE	123	# if HAVE_PORT_H && HAVE_PORT_CREATE
124	# define EV_USE_PORT 1	124	# define EV_USE_PORT EV_FEATURE_BACKENDS
125	# else	125	# else
126	# define EV_USE_PORT 0	126	# define EV_USE_PORT 0
127	# endif	127	# endif
128	# endif	128	# endif
129		129
130	# ifndef EV_USE_INOTIFY	130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132	# define EV_USE_INOTIFY 1	132	# define EV_USE_INOTIFY EV_FEATURE_OS
133	# else	133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY 0
135	# endif	135	# endif
136	# endif	136	# endif
137		137
		138	# ifndef EV_USE_SIGNALFD
		139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		140	# define EV_USE_SIGNALFD EV_FEATURE_OS
		141	# else
		142	# define EV_USE_SIGNALFD 0
		143	# endif
		144	# endif
		145
138	# ifndef EV_USE_EVENTFD	146	# ifndef EV_USE_EVENTFD
139	# if HAVE_EVENTFD	147	# if HAVE_EVENTFD
140	# define EV_USE_EVENTFD 1	148	# define EV_USE_EVENTFD EV_FEATURE_OS
141	# else	149	# else
142	# define EV_USE_EVENTFD 0	150	# define EV_USE_EVENTFD 0
143	# endif	151	# endif
144	# endif	152	# endif
145		153
146	#endif	154	#endif
147		155
148	#include <math.h>	156	#include <math.h>
149	#include <stdlib.h>	157	#include <stdlib.h>
		158	#include <string.h>
150	#include <fcntl.h>	159	#include <fcntl.h>
151	#include <stddef.h>	160	#include <stddef.h>
152		161
153	#include <stdio.h>	162	#include <stdio.h>
154		163
155	#include <assert.h>	164	#include <assert.h>
156	#include <errno.h>	165	#include <errno.h>
157	#include <sys/types.h>	166	#include <sys/types.h>
158	#include <time.h>	167	#include <time.h>
		168	#include <limits.h>
159		169
160	#include <signal.h>	170	#include <signal.h>
161		171
162	#ifdef EV_H	172	#ifdef EV_H
163	# include EV_H	173	# include EV_H
…		…
174	# define WIN32_LEAN_AND_MEAN	184	# define WIN32_LEAN_AND_MEAN
175	# include <windows.h>	185	# include <windows.h>
176	# ifndef EV_SELECT_IS_WINSOCKET	186	# ifndef EV_SELECT_IS_WINSOCKET
177	# define EV_SELECT_IS_WINSOCKET 1	187	# define EV_SELECT_IS_WINSOCKET 1
178	# endif	188	# endif
		189	# undef EV_AVOID_STDIO
179	#endif	190	#endif
180		191
181	/* this block tries to deduce configuration from header-defined symbols and defaults */	192	/* this block tries to deduce configuration from header-defined symbols and defaults */
		193
		194	/* try to deduce the maximum number of signals on this platform */
		195	#if defined (EV_NSIG)
		196	/* use what's provided */
		197	#elif defined (NSIG)
		198	# define EV_NSIG (NSIG)
		199	#elif defined(_NSIG)
		200	# define EV_NSIG (_NSIG)
		201	#elif defined (SIGMAX)
		202	# define EV_NSIG (SIGMAX+1)
		203	#elif defined (SIG_MAX)
		204	# define EV_NSIG (SIG_MAX+1)
		205	#elif defined (_SIG_MAX)
		206	# define EV_NSIG (_SIG_MAX+1)
		207	#elif defined (MAXSIG)
		208	# define EV_NSIG (MAXSIG+1)
		209	#elif defined (MAX_SIG)
		210	# define EV_NSIG (MAX_SIG+1)
		211	#elif defined (SIGARRAYSIZE)
		212	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		213	#elif defined (_sys_nsig)
		214	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		215	#else
		216	# error "unable to find value for NSIG, please report"
		217	/* to make it compile regardless, just remove the above line, */
		218	/* but consider reporting it, too! :) */
		219	# define EV_NSIG 65
		220	#endif
182		221
183	#ifndef EV_USE_CLOCK_SYSCALL	222	#ifndef EV_USE_CLOCK_SYSCALL
184	# if __linux && __GLIBC__ >= 2	223	# if __linux && __GLIBC__ >= 2
185	# define EV_USE_CLOCK_SYSCALL 1	224	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
186	# else	225	# else
187	# define EV_USE_CLOCK_SYSCALL 0	226	# define EV_USE_CLOCK_SYSCALL 0
188	# endif	227	# endif
189	#endif	228	#endif
190		229
191	#ifndef EV_USE_MONOTONIC	230	#ifndef EV_USE_MONOTONIC
192	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	231	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
193	# define EV_USE_MONOTONIC 1	232	# define EV_USE_MONOTONIC EV_FEATURE_OS
194	# else	233	# else
195	# define EV_USE_MONOTONIC 0	234	# define EV_USE_MONOTONIC 0
196	# endif	235	# endif
197	#endif	236	#endif
198		237
…		…
200	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	239	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
201	#endif	240	#endif
202		241
203	#ifndef EV_USE_NANOSLEEP	242	#ifndef EV_USE_NANOSLEEP
204	# if _POSIX_C_SOURCE >= 199309L	243	# if _POSIX_C_SOURCE >= 199309L
205	# define EV_USE_NANOSLEEP 1	244	# define EV_USE_NANOSLEEP EV_FEATURE_OS
206	# else	245	# else
207	# define EV_USE_NANOSLEEP 0	246	# define EV_USE_NANOSLEEP 0
208	# endif	247	# endif
209	#endif	248	#endif
210		249
211	#ifndef EV_USE_SELECT	250	#ifndef EV_USE_SELECT
212	# define EV_USE_SELECT 1	251	# define EV_USE_SELECT EV_FEATURE_BACKENDS
213	#endif	252	#endif
214		253
215	#ifndef EV_USE_POLL	254	#ifndef EV_USE_POLL
216	# ifdef _WIN32	255	# ifdef _WIN32
217	# define EV_USE_POLL 0	256	# define EV_USE_POLL 0
218	# else	257	# else
219	# define EV_USE_POLL 1	258	# define EV_USE_POLL EV_FEATURE_BACKENDS
220	# endif	259	# endif
221	#endif	260	#endif
222		261
223	#ifndef EV_USE_EPOLL	262	#ifndef EV_USE_EPOLL
224	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	263	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
225	# define EV_USE_EPOLL 1	264	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
226	# else	265	# else
227	# define EV_USE_EPOLL 0	266	# define EV_USE_EPOLL 0
228	# endif	267	# endif
229	#endif	268	#endif
230		269
…		…
236	# define EV_USE_PORT 0	275	# define EV_USE_PORT 0
237	#endif	276	#endif
238		277
239	#ifndef EV_USE_INOTIFY	278	#ifndef EV_USE_INOTIFY
240	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	279	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
241	# define EV_USE_INOTIFY 1	280	# define EV_USE_INOTIFY EV_FEATURE_OS
242	# else	281	# else
243	# define EV_USE_INOTIFY 0	282	# define EV_USE_INOTIFY 0
244	# endif	283	# endif
245	#endif	284	#endif
246		285
247	#ifndef EV_PID_HASHSIZE	286	#ifndef EV_PID_HASHSIZE
248	# if EV_MINIMAL	287	# 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	288	#endif
254		289
255	#ifndef EV_INOTIFY_HASHSIZE	290	#ifndef EV_INOTIFY_HASHSIZE
256	# if EV_MINIMAL	291	# 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	292	#endif
262		293
263	#ifndef EV_USE_EVENTFD	294	#ifndef EV_USE_EVENTFD
264	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	295	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
265	# define EV_USE_EVENTFD 1	296	# define EV_USE_EVENTFD EV_FEATURE_OS
266	# else	297	# else
267	# define EV_USE_EVENTFD 0	298	# define EV_USE_EVENTFD 0
		299	# endif
		300	#endif
		301
		302	#ifndef EV_USE_SIGNALFD
		303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		304	# define EV_USE_SIGNALFD EV_FEATURE_OS
		305	# else
		306	# define EV_USE_SIGNALFD 0
268	# endif	307	# endif
269	#endif	308	#endif
270		309
271	#if 0 /* debugging */	310	#if 0 /* debugging */
272	# define EV_VERIFY 3	311	# define EV_VERIFY 3
273	# define EV_USE_4HEAP 1	312	# define EV_USE_4HEAP 1
274	# define EV_HEAP_CACHE_AT 1	313	# define EV_HEAP_CACHE_AT 1
275	#endif	314	#endif
276		315
277	#ifndef EV_VERIFY	316	#ifndef EV_VERIFY
278	# define EV_VERIFY !EV_MINIMAL	317	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
279	#endif	318	#endif
280		319
281	#ifndef EV_USE_4HEAP	320	#ifndef EV_USE_4HEAP
282	# define EV_USE_4HEAP !EV_MINIMAL	321	# define EV_USE_4HEAP EV_FEATURE_DATA
283	#endif	322	#endif
284		323
285	#ifndef EV_HEAP_CACHE_AT	324	#ifndef EV_HEAP_CACHE_AT
286	# define EV_HEAP_CACHE_AT !EV_MINIMAL	325	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
287	#endif	326	#endif
288		327
289	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	328	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
290	/* which makes programs even slower. might work on other unices, too. */	329	/* which makes programs even slower. might work on other unices, too. */
291	#if EV_USE_CLOCK_SYSCALL	330	#if EV_USE_CLOCK_SYSCALL
…		…
300	# endif	339	# endif
301	#endif	340	#endif
302		341
303	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	342	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
304		343
		344	#ifdef _AIX
		345	/* AIX has a completely broken poll.h header */
		346	# undef EV_USE_POLL
		347	# define EV_USE_POLL 0
		348	#endif
		349
305	#ifndef CLOCK_MONOTONIC	350	#ifndef CLOCK_MONOTONIC
306	# undef EV_USE_MONOTONIC	351	# undef EV_USE_MONOTONIC
307	# define EV_USE_MONOTONIC 0	352	# define EV_USE_MONOTONIC 0
308	#endif	353	#endif
309		354
…		…
339	#endif	384	#endif
340		385
341	#if EV_USE_EVENTFD	386	#if EV_USE_EVENTFD
342	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	387	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
343	# include <stdint.h>	388	# include <stdint.h>
		389	# ifndef EFD_NONBLOCK
		390	# define EFD_NONBLOCK O_NONBLOCK
		391	# endif
		392	# ifndef EFD_CLOEXEC
		393	# ifdef O_CLOEXEC
		394	# define EFD_CLOEXEC O_CLOEXEC
		395	# else
		396	# define EFD_CLOEXEC 02000000
		397	# endif
		398	# endif
344	# ifdef __cplusplus	399	# ifdef __cplusplus
345	extern "C" {	400	extern "C" {
346	# endif	401	# endif
347	int eventfd (unsigned int initval, int flags);	402	int (eventfd) (unsigned int initval, int flags);
348	# ifdef __cplusplus	403	# ifdef __cplusplus
349	}	404	}
350	# endif	405	# endif
351	#endif	406	#endif
352		407
		408	#if EV_USE_SIGNALFD
		409	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		410	# include <stdint.h>
		411	# ifndef SFD_NONBLOCK
		412	# define SFD_NONBLOCK O_NONBLOCK
		413	# endif
		414	# ifndef SFD_CLOEXEC
		415	# ifdef O_CLOEXEC
		416	# define SFD_CLOEXEC O_CLOEXEC
		417	# else
		418	# define SFD_CLOEXEC 02000000
		419	# endif
		420	# endif
		421	# ifdef __cplusplus
		422	extern "C" {
		423	# endif
		424	int signalfd (int fd, const sigset_t *mask, int flags);
		425
		426	struct signalfd_siginfo
		427	{
		428	uint32_t ssi_signo;
		429	char pad[128 - sizeof (uint32_t)];
		430	};
		431	# ifdef __cplusplus
		432	}
		433	# endif
		434	#endif
		435
		436
353	/**/	437	/**/
354		438
355	#if EV_VERIFY >= 3	439	#if EV_VERIFY >= 3
356	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	440	# define EV_FREQUENT_CHECK ev_verify (EV_A)
357	#else	441	#else
358	# define EV_FREQUENT_CHECK do { } while (0)	442	# define EV_FREQUENT_CHECK do { } while (0)
359	#endif	443	#endif
360		444
361	/*	445	/*
…		…
368	*/	452	*/
369	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	453	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
370		454
371	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	455	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
372	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	456	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
373	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
374		457
375	#if __GNUC__ >= 4	458	#if __GNUC__ >= 4
376	# define expect(expr,value) __builtin_expect ((expr),(value))	459	# define expect(expr,value) __builtin_expect ((expr),(value))
377	# define noinline __attribute__ ((noinline))	460	# define noinline __attribute__ ((noinline))
378	#else	461	#else
…		…
385		468
386	#define expect_false(expr) expect ((expr) != 0, 0)	469	#define expect_false(expr) expect ((expr) != 0, 0)
387	#define expect_true(expr) expect ((expr) != 0, 1)	470	#define expect_true(expr) expect ((expr) != 0, 1)
388	#define inline_size static inline	471	#define inline_size static inline
389		472
390	#if EV_MINIMAL	473	#if EV_FEATURE_CODE
		474	# define inline_speed static inline
		475	#else
391	# define inline_speed static noinline	476	# define inline_speed static noinline
		477	#endif
		478
		479	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		480
		481	#if EV_MINPRI == EV_MAXPRI
		482	# define ABSPRI(w) (((W)w), 0)
392	#else	483	#else
393	# define inline_speed static inline
394	#endif
395
396	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
397	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	484	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		485	#endif
398		486
399	#define EMPTY /* required for microsofts broken pseudo-c compiler */	487	#define EMPTY /* required for microsofts broken pseudo-c compiler */
400	#define EMPTY2(a,b) /* used to suppress some warnings */	488	#define EMPTY2(a,b) /* used to suppress some warnings */
401		489
402	typedef ev_watcher *W;	490	typedef ev_watcher *W;
…		…
414		502
415	#if EV_USE_MONOTONIC	503	#if EV_USE_MONOTONIC
416	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	504	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
417	#endif	505	#endif
418		506
		507	#ifndef EV_FD_TO_WIN32_HANDLE
		508	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		509	#endif
		510	#ifndef EV_WIN32_HANDLE_TO_FD
		511	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		512	#endif
		513	#ifndef EV_WIN32_CLOSE_FD
		514	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		515	#endif
		516
419	#ifdef _WIN32	517	#ifdef _WIN32
420	# include "ev_win32.c"	518	# include "ev_win32.c"
421	#endif	519	#endif
422		520
423	/*****************************************************************************/	521	/*****************************************************************************/
		522
		523	#if EV_AVOID_STDIO
		524	static void noinline
		525	ev_printerr (const char *msg)
		526	{
		527	write (STDERR_FILENO, msg, strlen (msg));
		528	}
		529	#endif
424		530
425	static void (*syserr_cb)(const char *msg);	531	static void (*syserr_cb)(const char *msg);
426		532
427	void	533	void
428	ev_set_syserr_cb (void (*cb)(const char *msg))	534	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
438		544
439	if (syserr_cb)	545	if (syserr_cb)
440	syserr_cb (msg);	546	syserr_cb (msg);
441	else	547	else
442	{	548	{
		549	#if EV_AVOID_STDIO
		550	const char *err = strerror (errno);
		551
		552	ev_printerr (msg);
		553	ev_printerr (": ");
		554	ev_printerr (err);
		555	ev_printerr ("\n");
		556	#else
443	perror (msg);	557	perror (msg);
		558	#endif
444	abort ();	559	abort ();
445	}	560	}
446	}	561	}
447		562
448	static void *	563	static void *
449	ev_realloc_emul (void *ptr, long size)	564	ev_realloc_emul (void *ptr, long size)
450	{	565	{
		566	#if __GLIBC__
		567	return realloc (ptr, size);
		568	#else
451	/* some systems, notably openbsd and darwin, fail to properly	569	/* some systems, notably openbsd and darwin, fail to properly
452	* implement realloc (x, 0) (as required by both ansi c-98 and	570	* implement realloc (x, 0) (as required by both ansi c-89 and
453	* the single unix specification, so work around them here.	571	* the single unix specification, so work around them here.
454	*/	572	*/
455		573
456	if (size)	574	if (size)
457	return realloc (ptr, size);	575	return realloc (ptr, size);
458		576
459	free (ptr);	577	free (ptr);
460	return 0;	578	return 0;
		579	#endif
461	}	580	}
462		581
463	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	582	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
464		583
465	void	584	void
…		…
473	{	592	{
474	ptr = alloc (ptr, size);	593	ptr = alloc (ptr, size);
475		594
476	if (!ptr && size)	595	if (!ptr && size)
477	{	596	{
		597	#if EV_AVOID_STDIO
		598	ev_printerr ("libev: memory allocation failed, aborting.\n");
		599	#else
478	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	600	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		601	#endif
479	abort ();	602	abort ();
480	}	603	}
481		604
482	return ptr;	605	return ptr;
483	}	606	}
…		…
485	#define ev_malloc(size) ev_realloc (0, (size))	608	#define ev_malloc(size) ev_realloc (0, (size))
486	#define ev_free(ptr) ev_realloc ((ptr), 0)	609	#define ev_free(ptr) ev_realloc ((ptr), 0)
487		610
488	/*****************************************************************************/	611	/*****************************************************************************/
489		612
		613	/* set in reify when reification needed */
		614	#define EV_ANFD_REIFY 1
		615
490	/* file descriptor info structure */	616	/* file descriptor info structure */
491	typedef struct	617	typedef struct
492	{	618	{
493	WL head;	619	WL head;
494	unsigned char events; /* the events watched for */	620	unsigned char events; /* the events watched for */
495	unsigned char reify; /* flag set when this ANFD needs reification */	621	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
496	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */	622	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
497	unsigned char unused;	623	unsigned char unused;
498	#if EV_USE_EPOLL	624	#if EV_USE_EPOLL
499	unsigned int egen; /* generation counter to counter epoll bugs */	625	unsigned int egen; /* generation counter to counter epoll bugs */
500	#endif	626	#endif
…		…
562		688
563	static int ev_default_loop_ptr;	689	static int ev_default_loop_ptr;
564		690
565	#endif	691	#endif
566		692
		693	#if EV_FEATURE_API
		694	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		695	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		696	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		697	#else
		698	# define EV_RELEASE_CB (void)0
		699	# define EV_ACQUIRE_CB (void)0
		700	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		701	#endif
		702
		703	#define EVUNLOOP_RECURSE 0x80
		704
567	/*****************************************************************************/	705	/*****************************************************************************/
568		706
569	#ifndef EV_HAVE_EV_TIME	707	#ifndef EV_HAVE_EV_TIME
570	ev_tstamp	708	ev_tstamp
571	ev_time (void)	709	ev_time (void)
…		…
627		765
628	tv.tv_sec = (time_t)delay;	766	tv.tv_sec = (time_t)delay;
629	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	767	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
630		768
631	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	769	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
632	/* somehting nto guaranteed by newer posix versions, but guaranteed */	770	/* something not guaranteed by newer posix versions, but guaranteed */
633	/* by older ones */	771	/* by older ones */
634	select (0, 0, 0, 0, &tv);	772	select (0, 0, 0, 0, &tv);
635	#endif	773	#endif
636	}	774	}
637	}	775	}
…		…
745	}	883	}
746		884
747	/*****************************************************************************/	885	/*****************************************************************************/
748		886
749	inline_speed void	887	inline_speed void
750	fd_event (EV_P_ int fd, int revents)	888	fd_event_nocheck (EV_P_ int fd, int revents)
751	{	889	{
752	ANFD *anfd = anfds + fd;	890	ANFD *anfd = anfds + fd;
753	ev_io *w;	891	ev_io *w;
754		892
755	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	893	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
759	if (ev)	897	if (ev)
760	ev_feed_event (EV_A_ (W)w, ev);	898	ev_feed_event (EV_A_ (W)w, ev);
761	}	899	}
762	}	900	}
763		901
		902	/* do not submit kernel events for fds that have reify set */
		903	/* because that means they changed while we were polling for new events */
		904	inline_speed void
		905	fd_event (EV_P_ int fd, int revents)
		906	{
		907	ANFD *anfd = anfds + fd;
		908
		909	if (expect_true (!anfd->reify))
		910	fd_event_nocheck (EV_A_ fd, revents);
		911	}
		912
764	void	913	void
765	ev_feed_fd_event (EV_P_ int fd, int revents)	914	ev_feed_fd_event (EV_P_ int fd, int revents)
766	{	915	{
767	if (fd >= 0 && fd < anfdmax)	916	if (fd >= 0 && fd < anfdmax)
768	fd_event (EV_A_ fd, revents);	917	fd_event_nocheck (EV_A_ fd, revents);
769	}	918	}
770		919
771	/* make sure the external fd watch events are in-sync */	920	/* make sure the external fd watch events are in-sync */
772	/* with the kernel/libev internal state */	921	/* with the kernel/libev internal state */
773	inline_size void	922	inline_size void
…		…
788		937
789	#if EV_SELECT_IS_WINSOCKET	938	#if EV_SELECT_IS_WINSOCKET
790	if (events)	939	if (events)
791	{	940	{
792	unsigned long arg;	941	unsigned long arg;
793	#ifdef EV_FD_TO_WIN32_HANDLE
794	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	942	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
795	#else
796	anfd->handle = _get_osfhandle (fd);
797	#endif
798	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	943	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
799	}	944	}
800	#endif	945	#endif
801		946
802	{	947	{
…		…
840	ev_io_stop (EV_A_ w);	985	ev_io_stop (EV_A_ w);
841	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	986	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
842	}	987	}
843	}	988	}
844		989
845	/* check whether the given fd is atcually valid, for error recovery */	990	/* check whether the given fd is actually valid, for error recovery */
846	inline_size int	991	inline_size int
847	fd_valid (int fd)	992	fd_valid (int fd)
848	{	993	{
849	#ifdef _WIN32	994	#ifdef _WIN32
850	return _get_osfhandle (fd) != -1;	995	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
851	#else	996	#else
852	return fcntl (fd, F_GETFD) != -1;	997	return fcntl (fd, F_GETFD) != -1;
853	#endif	998	#endif
854	}	999	}
855		1000
…		…
873		1018
874	for (fd = anfdmax; fd--; )	1019	for (fd = anfdmax; fd--; )
875	if (anfds [fd].events)	1020	if (anfds [fd].events)
876	{	1021	{
877	fd_kill (EV_A_ fd);	1022	fd_kill (EV_A_ fd);
878	return;	1023	break;
879	}	1024	}
880	}	1025	}
881		1026
882	/* usually called after fork if backend needs to re-arm all fds from scratch */	1027	/* usually called after fork if backend needs to re-arm all fds from scratch */
883	static void noinline	1028	static void noinline
…		…
888	for (fd = 0; fd < anfdmax; ++fd)	1033	for (fd = 0; fd < anfdmax; ++fd)
889	if (anfds [fd].events)	1034	if (anfds [fd].events)
890	{	1035	{
891	anfds [fd].events = 0;	1036	anfds [fd].events = 0;
892	anfds [fd].emask = 0;	1037	anfds [fd].emask = 0;
893	fd_change (EV_A_ fd, EV__IOFDSET | 1);	1038	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
894	}	1039	}
		1040	}
		1041
		1042	/* used to prepare libev internal fd's */
		1043	/* this is not fork-safe */
		1044	inline_speed void
		1045	fd_intern (int fd)
		1046	{
		1047	#ifdef _WIN32
		1048	unsigned long arg = 1;
		1049	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1050	#else
		1051	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1052	fcntl (fd, F_SETFL, O_NONBLOCK);
		1053	#endif
895	}	1054	}
896		1055
897	/*****************************************************************************/	1056	/*****************************************************************************/
898		1057
899	/*	1058	/*
…		…
973		1132
974	for (;;)	1133	for (;;)
975	{	1134	{
976	int c = k << 1;	1135	int c = k << 1;
977		1136
978	if (c > N + HEAP0 - 1)	1137	if (c >= N + HEAP0)
979	break;	1138	break;
980		1139
981	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1140	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
982	? 1 : 0;	1141	? 1 : 0;
983		1142
…		…
1019		1178
1020	/* move an element suitably so it is in a correct place */	1179	/* move an element suitably so it is in a correct place */
1021	inline_size void	1180	inline_size void
1022	adjustheap (ANHE *heap, int N, int k)	1181	adjustheap (ANHE *heap, int N, int k)
1023	{	1182	{
1024	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1183	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1025	upheap (heap, k);	1184	upheap (heap, k);
1026	else	1185	else
1027	downheap (heap, N, k);	1186	downheap (heap, N, k);
1028	}	1187	}
1029		1188
…		…
1042	/*****************************************************************************/	1201	/*****************************************************************************/
1043		1202
1044	/* associate signal watchers to a signal signal */	1203	/* associate signal watchers to a signal signal */
1045	typedef struct	1204	typedef struct
1046	{	1205	{
		1206	EV_ATOMIC_T pending;
		1207	#if EV_MULTIPLICITY
		1208	EV_P;
		1209	#endif
1047	WL head;	1210	WL head;
1048	EV_ATOMIC_T gotsig;
1049	} ANSIG;	1211	} ANSIG;
1050		1212
1051	static ANSIG *signals;	1213	static ANSIG signals [EV_NSIG - 1];
1052	static int signalmax;
1053
1054	static EV_ATOMIC_T gotsig;
1055		1214
1056	/*****************************************************************************/	1215	/*****************************************************************************/
1057		1216
1058	/* used to prepare libev internal fd's */	1217	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1059	/* this is not fork-safe */
1060	inline_speed void
1061	fd_intern (int fd)
1062	{
1063	#ifdef _WIN32
1064	unsigned long arg = 1;
1065	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1066	#else
1067	fcntl (fd, F_SETFD, FD_CLOEXEC);
1068	fcntl (fd, F_SETFL, O_NONBLOCK);
1069	#endif
1070	}
1071		1218
1072	static void noinline	1219	static void noinline
1073	evpipe_init (EV_P)	1220	evpipe_init (EV_P)
1074	{	1221	{
1075	if (!ev_is_active (&pipe_w))	1222	if (!ev_is_active (&pipe_w))
1076	{	1223	{
1077	#if EV_USE_EVENTFD	1224	# if EV_USE_EVENTFD
		1225	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1226	if (evfd < 0 && errno == EINVAL)
1078	if ((evfd = eventfd (0, 0)) >= 0)	1227	evfd = eventfd (0, 0);
		1228
		1229	if (evfd >= 0)
1079	{	1230	{
1080	evpipe [0] = -1;	1231	evpipe [0] = -1;
1081	fd_intern (evfd);	1232	fd_intern (evfd); /* doing it twice doesn't hurt */
1082	ev_io_set (&pipe_w, evfd, EV_READ);	1233	ev_io_set (&pipe_w, evfd, EV_READ);
1083	}	1234	}
1084	else	1235	else
1085	#endif	1236	# endif
1086	{	1237	{
1087	while (pipe (evpipe))	1238	while (pipe (evpipe))
1088	ev_syserr ("(libev) error creating signal/async pipe");	1239	ev_syserr ("(libev) error creating signal/async pipe");
1089		1240
1090	fd_intern (evpipe [0]);	1241	fd_intern (evpipe [0]);
…		…
1101	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1252	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1102	{	1253	{
1103	if (!*flag)	1254	if (!*flag)
1104	{	1255	{
1105	int old_errno = errno; /* save errno because write might clobber it */	1256	int old_errno = errno; /* save errno because write might clobber it */
		1257	char dummy;
1106		1258
1107	*flag = 1;	1259	*flag = 1;
1108		1260
1109	#if EV_USE_EVENTFD	1261	#if EV_USE_EVENTFD
1110	if (evfd >= 0)	1262	if (evfd >= 0)
…		…
1112	uint64_t counter = 1;	1264	uint64_t counter = 1;
1113	write (evfd, &counter, sizeof (uint64_t));	1265	write (evfd, &counter, sizeof (uint64_t));
1114	}	1266	}
1115	else	1267	else
1116	#endif	1268	#endif
1117	write (evpipe [1], &old_errno, 1);	1269	write (evpipe [1], &dummy, 1);
1118		1270
1119	errno = old_errno;	1271	errno = old_errno;
1120	}	1272	}
1121	}	1273	}
1122		1274
1123	/* called whenever the libev signal pipe */	1275	/* called whenever the libev signal pipe */
1124	/* got some events (signal, async) */	1276	/* got some events (signal, async) */
1125	static void	1277	static void
1126	pipecb (EV_P_ ev_io *iow, int revents)	1278	pipecb (EV_P_ ev_io *iow, int revents)
1127	{	1279	{
		1280	int i;
		1281
1128	#if EV_USE_EVENTFD	1282	#if EV_USE_EVENTFD
1129	if (evfd >= 0)	1283	if (evfd >= 0)
1130	{	1284	{
1131	uint64_t counter;	1285	uint64_t counter;
1132	read (evfd, &counter, sizeof (uint64_t));	1286	read (evfd, &counter, sizeof (uint64_t));
…		…
1136	{	1290	{
1137	char dummy;	1291	char dummy;
1138	read (evpipe [0], &dummy, 1);	1292	read (evpipe [0], &dummy, 1);
1139	}	1293	}
1140		1294
1141	if (gotsig && ev_is_default_loop (EV_A))	1295	if (sig_pending)
1142	{	1296	{
1143	int signum;	1297	sig_pending = 0;
1144	gotsig = 0;
1145		1298
1146	for (signum = signalmax; signum--; )	1299	for (i = EV_NSIG - 1; i--; )
1147	if (signals [signum].gotsig)	1300	if (expect_false (signals [i].pending))
1148	ev_feed_signal_event (EV_A_ signum + 1);	1301	ev_feed_signal_event (EV_A_ i + 1);
1149	}	1302	}
1150		1303
1151	#if EV_ASYNC_ENABLE	1304	#if EV_ASYNC_ENABLE
1152	if (gotasync)	1305	if (async_pending)
1153	{	1306	{
1154	int i;	1307	async_pending = 0;
1155	gotasync = 0;
1156		1308
1157	for (i = asynccnt; i--; )	1309	for (i = asynccnt; i--; )
1158	if (asyncs [i]->sent)	1310	if (asyncs [i]->sent)
1159	{	1311	{
1160	asyncs [i]->sent = 0;	1312	asyncs [i]->sent = 0;
…		…
1168		1320
1169	static void	1321	static void
1170	ev_sighandler (int signum)	1322	ev_sighandler (int signum)
1171	{	1323	{
1172	#if EV_MULTIPLICITY	1324	#if EV_MULTIPLICITY
1173	struct ev_loop *loop = &default_loop_struct;	1325	EV_P = signals [signum - 1].loop;
1174	#endif	1326	#endif
1175		1327
1176	#if _WIN32	1328	#ifdef _WIN32
1177	signal (signum, ev_sighandler);	1329	signal (signum, ev_sighandler);
1178	#endif	1330	#endif
1179		1331
1180	signals [signum - 1].gotsig = 1;	1332	signals [signum - 1].pending = 1;
1181	evpipe_write (EV_A_ &gotsig);	1333	evpipe_write (EV_A_ &sig_pending);
1182	}	1334	}
1183		1335
1184	void noinline	1336	void noinline
1185	ev_feed_signal_event (EV_P_ int signum)	1337	ev_feed_signal_event (EV_P_ int signum)
1186	{	1338	{
1187	WL w;	1339	WL w;
1188		1340
		1341	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1342	return;
		1343
		1344	--signum;
		1345
1189	#if EV_MULTIPLICITY	1346	#if EV_MULTIPLICITY
1190	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1347	/* it is permissible to try to feed a signal to the wrong loop */
1191	#endif	1348	/* or, likely more useful, feeding a signal nobody is waiting for */
1192		1349
1193	--signum;	1350	if (expect_false (signals [signum].loop != EV_A))
1194
1195	if (signum < 0 || signum >= signalmax)
1196	return;	1351	return;
		1352	#endif
1197		1353
1198	signals [signum].gotsig = 0;	1354	signals [signum].pending = 0;
1199		1355
1200	for (w = signals [signum].head; w; w = w->next)	1356	for (w = signals [signum].head; w; w = w->next)
1201	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1357	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1202	}	1358	}
1203		1359
		1360	#if EV_USE_SIGNALFD
		1361	static void
		1362	sigfdcb (EV_P_ ev_io *iow, int revents)
		1363	{
		1364	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1365
		1366	for (;;)
		1367	{
		1368	ssize_t res = read (sigfd, si, sizeof (si));
		1369
		1370	/* not ISO-C, as res might be -1, but works with SuS */
		1371	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1372	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1373
		1374	if (res < (ssize_t)sizeof (si))
		1375	break;
		1376	}
		1377	}
		1378	#endif
		1379
		1380	#endif
		1381
1204	/*****************************************************************************/	1382	/*****************************************************************************/
1205		1383
		1384	#if EV_CHILD_ENABLE
1206	static WL childs [EV_PID_HASHSIZE];	1385	static WL childs [EV_PID_HASHSIZE];
1207
1208	#ifndef _WIN32
1209		1386
1210	static ev_signal childev;	1387	static ev_signal childev;
1211		1388
1212	#ifndef WIFCONTINUED	1389	#ifndef WIFCONTINUED
1213	# define WIFCONTINUED(status) 0	1390	# define WIFCONTINUED(status) 0
…		…
1218	child_reap (EV_P_ int chain, int pid, int status)	1395	child_reap (EV_P_ int chain, int pid, int status)
1219	{	1396	{
1220	ev_child *w;	1397	ev_child *w;
1221	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1398	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1222		1399
1223	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1400	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1224	{	1401	{
1225	if ((w->pid == pid || !w->pid)	1402	if ((w->pid == pid || !w->pid)
1226	&& (!traced || (w->flags & 1)))	1403	&& (!traced || (w->flags & 1)))
1227	{	1404	{
1228	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1405	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
1253	/* make sure we are called again until all children have been reaped */	1430	/* make sure we are called again until all children have been reaped */
1254	/* we need to do it this way so that the callback gets called before we continue */	1431	/* we need to do it this way so that the callback gets called before we continue */
1255	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1432	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1256		1433
1257	child_reap (EV_A_ pid, pid, status);	1434	child_reap (EV_A_ pid, pid, status);
1258	if (EV_PID_HASHSIZE > 1)	1435	if ((EV_PID_HASHSIZE) > 1)
1259	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1436	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1260	}	1437	}
1261		1438
1262	#endif	1439	#endif
1263		1440
…		…
1352	ev_backend (EV_P)	1529	ev_backend (EV_P)
1353	{	1530	{
1354	return backend;	1531	return backend;
1355	}	1532	}
1356		1533
		1534	#if EV_FEATURE_API
1357	unsigned int	1535	unsigned int
1358	ev_loop_count (EV_P)	1536	ev_iteration (EV_P)
1359	{	1537	{
1360	return loop_count;	1538	return loop_count;
1361	}	1539	}
1362		1540
		1541	unsigned int
		1542	ev_depth (EV_P)
		1543	{
		1544	return loop_depth;
		1545	}
		1546
1363	void	1547	void
1364	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1548	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1365	{	1549	{
1366	io_blocktime = interval;	1550	io_blocktime = interval;
1367	}	1551	}
…		…
1369	void	1553	void
1370	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1554	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1371	{	1555	{
1372	timeout_blocktime = interval;	1556	timeout_blocktime = interval;
1373	}	1557	}
		1558
		1559	void
		1560	ev_set_userdata (EV_P_ void *data)
		1561	{
		1562	userdata = data;
		1563	}
		1564
		1565	void *
		1566	ev_userdata (EV_P)
		1567	{
		1568	return userdata;
		1569	}
		1570
		1571	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1572	{
		1573	invoke_cb = invoke_pending_cb;
		1574	}
		1575
		1576	void ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1577	{
		1578	release_cb = release;
		1579	acquire_cb = acquire;
		1580	}
		1581	#endif
1374		1582
1375	/* initialise a loop structure, must be zero-initialised */	1583	/* initialise a loop structure, must be zero-initialised */
1376	static void noinline	1584	static void noinline
1377	loop_init (EV_P_ unsigned int flags)	1585	loop_init (EV_P_ unsigned int flags)
1378	{	1586	{
…		…
1396	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1397	have_monotonic = 1;	1605	have_monotonic = 1;
1398	}	1606	}
1399	#endif	1607	#endif
1400		1608
		1609	/* pid check not overridable via env */
		1610	#ifndef _WIN32
		1611	if (flags & EVFLAG_FORKCHECK)
		1612	curpid = getpid ();
		1613	#endif
		1614
		1615	if (!(flags & EVFLAG_NOENV)
		1616	&& !enable_secure ()
		1617	&& getenv ("LIBEV_FLAGS"))
		1618	flags = atoi (getenv ("LIBEV_FLAGS"));
		1619
1401	ev_rt_now = ev_time ();	1620	ev_rt_now = ev_time ();
1402	mn_now = get_clock ();	1621	mn_now = get_clock ();
1403	now_floor = mn_now;	1622	now_floor = mn_now;
1404	rtmn_diff = ev_rt_now - mn_now;	1623	rtmn_diff = ev_rt_now - mn_now;
		1624	#if EV_FEATURE_API
		1625	invoke_cb = ev_invoke_pending;
		1626	#endif
1405		1627
1406	io_blocktime = 0.;	1628	io_blocktime = 0.;
1407	timeout_blocktime = 0.;	1629	timeout_blocktime = 0.;
1408	backend = 0;	1630	backend = 0;
1409	backend_fd = -1;	1631	backend_fd = -1;
1410	gotasync = 0;	1632	sig_pending = 0;
		1633	#if EV_ASYNC_ENABLE
		1634	async_pending = 0;
		1635	#endif
1411	#if EV_USE_INOTIFY	1636	#if EV_USE_INOTIFY
1412	fs_fd = -2;	1637	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1413	#endif	1638	#endif
1414		1639	#if EV_USE_SIGNALFD
1415	/* pid check not overridable via env */	1640	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1416	#ifndef _WIN32
1417	if (flags & EVFLAG_FORKCHECK)
1418	curpid = getpid ();
1419	#endif	1641	#endif
1420
1421	if (!(flags & EVFLAG_NOENV)
1422	&& !enable_secure ()
1423	&& getenv ("LIBEV_FLAGS"))
1424	flags = atoi (getenv ("LIBEV_FLAGS"));
1425		1642
1426	if (!(flags & 0x0000ffffU))	1643	if (!(flags & 0x0000ffffU))
1427	flags |= ev_recommended_backends ();	1644	flags |= ev_recommended_backends ();
1428		1645
1429	#if EV_USE_PORT	1646	#if EV_USE_PORT
…		…
1442	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1659	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1443	#endif	1660	#endif
1444		1661
1445	ev_prepare_init (&pending_w, pendingcb);	1662	ev_prepare_init (&pending_w, pendingcb);
1446		1663
		1664	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1447	ev_init (&pipe_w, pipecb);	1665	ev_init (&pipe_w, pipecb);
1448	ev_set_priority (&pipe_w, EV_MAXPRI);	1666	ev_set_priority (&pipe_w, EV_MAXPRI);
		1667	#endif
1449	}	1668	}
1450	}	1669	}
1451		1670
1452	/* free up a loop structure */	1671	/* free up a loop structure */
1453	static void noinline	1672	static void noinline
…		…
1455	{	1674	{
1456	int i;	1675	int i;
1457		1676
1458	if (ev_is_active (&pipe_w))	1677	if (ev_is_active (&pipe_w))
1459	{	1678	{
1460	ev_ref (EV_A); /* signal watcher */	1679	/*ev_ref (EV_A);*/
1461	ev_io_stop (EV_A_ &pipe_w);	1680	/*ev_io_stop (EV_A_ &pipe_w);*/
1462		1681
1463	#if EV_USE_EVENTFD	1682	#if EV_USE_EVENTFD
1464	if (evfd >= 0)	1683	if (evfd >= 0)
1465	close (evfd);	1684	close (evfd);
1466	#endif	1685	#endif
1467		1686
1468	if (evpipe [0] >= 0)	1687	if (evpipe [0] >= 0)
1469	{	1688	{
1470	close (evpipe [0]);	1689	EV_WIN32_CLOSE_FD (evpipe [0]);
1471	close (evpipe [1]);	1690	EV_WIN32_CLOSE_FD (evpipe [1]);
1472	}	1691	}
1473	}	1692	}
		1693
		1694	#if EV_USE_SIGNALFD
		1695	if (ev_is_active (&sigfd_w))
		1696	close (sigfd);
		1697	#endif
1474		1698
1475	#if EV_USE_INOTIFY	1699	#if EV_USE_INOTIFY
1476	if (fs_fd >= 0)	1700	if (fs_fd >= 0)
1477	close (fs_fd);	1701	close (fs_fd);
1478	#endif	1702	#endif
…		…
1502	#if EV_IDLE_ENABLE	1726	#if EV_IDLE_ENABLE
1503	array_free (idle, [i]);	1727	array_free (idle, [i]);
1504	#endif	1728	#endif
1505	}	1729	}
1506		1730
1507	ev_free (anfds); anfdmax = 0;	1731	ev_free (anfds); anfds = 0; anfdmax = 0;
1508		1732
1509	/* have to use the microsoft-never-gets-it-right macro */	1733	/* have to use the microsoft-never-gets-it-right macro */
1510	array_free (rfeed, EMPTY);	1734	array_free (rfeed, EMPTY);
1511	array_free (fdchange, EMPTY);	1735	array_free (fdchange, EMPTY);
1512	array_free (timer, EMPTY);	1736	array_free (timer, EMPTY);
…		…
1547		1771
1548	if (ev_is_active (&pipe_w))	1772	if (ev_is_active (&pipe_w))
1549	{	1773	{
1550	/* this "locks" the handlers against writing to the pipe */	1774	/* this "locks" the handlers against writing to the pipe */
1551	/* while we modify the fd vars */	1775	/* while we modify the fd vars */
1552	gotsig = 1;	1776	sig_pending = 1;
1553	#if EV_ASYNC_ENABLE	1777	#if EV_ASYNC_ENABLE
1554	gotasync = 1;	1778	async_pending = 1;
1555	#endif	1779	#endif
1556		1780
1557	ev_ref (EV_A);	1781	ev_ref (EV_A);
1558	ev_io_stop (EV_A_ &pipe_w);	1782	ev_io_stop (EV_A_ &pipe_w);
1559		1783
…		…
1562	close (evfd);	1786	close (evfd);
1563	#endif	1787	#endif
1564		1788
1565	if (evpipe [0] >= 0)	1789	if (evpipe [0] >= 0)
1566	{	1790	{
1567	close (evpipe [0]);	1791	EV_WIN32_CLOSE_FD (evpipe [0]);
1568	close (evpipe [1]);	1792	EV_WIN32_CLOSE_FD (evpipe [1]);
1569	}	1793	}
1570		1794
		1795	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1571	evpipe_init (EV_A);	1796	evpipe_init (EV_A);
1572	/* now iterate over everything, in case we missed something */	1797	/* now iterate over everything, in case we missed something */
1573	pipecb (EV_A_ &pipe_w, EV_READ);	1798	pipecb (EV_A_ &pipe_w, EV_READ);
		1799	#endif
1574	}	1800	}
1575		1801
1576	postfork = 0;	1802	postfork = 0;
1577	}	1803	}
1578		1804
1579	#if EV_MULTIPLICITY	1805	#if EV_MULTIPLICITY
1580		1806
1581	struct ev_loop *	1807	struct ev_loop *
1582	ev_loop_new (unsigned int flags)	1808	ev_loop_new (unsigned int flags)
1583	{	1809	{
1584	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1810	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1585		1811
1586	memset (loop, 0, sizeof (struct ev_loop));	1812	memset (EV_A, 0, sizeof (struct ev_loop));
1587
1588	loop_init (EV_A_ flags);	1813	loop_init (EV_A_ flags);
1589		1814
1590	if (ev_backend (EV_A))	1815	if (ev_backend (EV_A))
1591	return loop;	1816	return EV_A;
1592		1817
1593	return 0;	1818	return 0;
1594	}	1819	}
1595		1820
1596	void	1821	void
…		…
1603	void	1828	void
1604	ev_loop_fork (EV_P)	1829	ev_loop_fork (EV_P)
1605	{	1830	{
1606	postfork = 1; /* must be in line with ev_default_fork */	1831	postfork = 1; /* must be in line with ev_default_fork */
1607	}	1832	}
		1833	#endif /* multiplicity */
1608		1834
1609	#if EV_VERIFY	1835	#if EV_VERIFY
1610	static void noinline	1836	static void noinline
1611	verify_watcher (EV_P_ W w)	1837	verify_watcher (EV_P_ W w)
1612	{	1838	{
…		…
1640	verify_watcher (EV_A_ ws [cnt]);	1866	verify_watcher (EV_A_ ws [cnt]);
1641	}	1867	}
1642	}	1868	}
1643	#endif	1869	#endif
1644		1870
		1871	#if EV_FEATURE_API
1645	void	1872	void
1646	ev_loop_verify (EV_P)	1873	ev_verify (EV_P)
1647	{	1874	{
1648	#if EV_VERIFY	1875	#if EV_VERIFY
1649	int i;	1876	int i;
1650	WL w;	1877	WL w;
1651		1878
…		…
1690	#if EV_ASYNC_ENABLE	1917	#if EV_ASYNC_ENABLE
1691	assert (asyncmax >= asynccnt);	1918	assert (asyncmax >= asynccnt);
1692	array_verify (EV_A_ (W *)asyncs, asynccnt);	1919	array_verify (EV_A_ (W *)asyncs, asynccnt);
1693	#endif	1920	#endif
1694		1921
		1922	#if EV_PREPARE_ENABLE
1695	assert (preparemax >= preparecnt);	1923	assert (preparemax >= preparecnt);
1696	array_verify (EV_A_ (W *)prepares, preparecnt);	1924	array_verify (EV_A_ (W *)prepares, preparecnt);
		1925	#endif
1697		1926
		1927	#if EV_CHECK_ENABLE
1698	assert (checkmax >= checkcnt);	1928	assert (checkmax >= checkcnt);
1699	array_verify (EV_A_ (W *)checks, checkcnt);	1929	array_verify (EV_A_ (W *)checks, checkcnt);
		1930	#endif
1700		1931
1701	# if 0	1932	# if 0
		1933	#if EV_CHILD_ENABLE
1702	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1934	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1703	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1935	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
1704	# endif	1936	#endif
1705	#endif	1937	# endif
		1938	#endif
1706	}	1939	}
1707		1940	#endif
1708	#endif /* multiplicity */
1709		1941
1710	#if EV_MULTIPLICITY	1942	#if EV_MULTIPLICITY
1711	struct ev_loop *	1943	struct ev_loop *
1712	ev_default_loop_init (unsigned int flags)	1944	ev_default_loop_init (unsigned int flags)
1713	#else	1945	#else
…		…
1716	#endif	1948	#endif
1717	{	1949	{
1718	if (!ev_default_loop_ptr)	1950	if (!ev_default_loop_ptr)
1719	{	1951	{
1720	#if EV_MULTIPLICITY	1952	#if EV_MULTIPLICITY
1721	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	1953	EV_P = ev_default_loop_ptr = &default_loop_struct;
1722	#else	1954	#else
1723	ev_default_loop_ptr = 1;	1955	ev_default_loop_ptr = 1;
1724	#endif	1956	#endif
1725		1957
1726	loop_init (EV_A_ flags);	1958	loop_init (EV_A_ flags);
1727		1959
1728	if (ev_backend (EV_A))	1960	if (ev_backend (EV_A))
1729	{	1961	{
1730	#ifndef _WIN32	1962	#if EV_CHILD_ENABLE
1731	ev_signal_init (&childev, childcb, SIGCHLD);	1963	ev_signal_init (&childev, childcb, SIGCHLD);
1732	ev_set_priority (&childev, EV_MAXPRI);	1964	ev_set_priority (&childev, EV_MAXPRI);
1733	ev_signal_start (EV_A_ &childev);	1965	ev_signal_start (EV_A_ &childev);
1734	ev_unref (EV_A); /* child watcher should not keep loop alive */	1966	ev_unref (EV_A); /* child watcher should not keep loop alive */
1735	#endif	1967	#endif
…		…
1743		1975
1744	void	1976	void
1745	ev_default_destroy (void)	1977	ev_default_destroy (void)
1746	{	1978	{
1747	#if EV_MULTIPLICITY	1979	#if EV_MULTIPLICITY
1748	struct ev_loop *loop = ev_default_loop_ptr;	1980	EV_P = ev_default_loop_ptr;
1749	#endif	1981	#endif
1750		1982
1751	ev_default_loop_ptr = 0;	1983	ev_default_loop_ptr = 0;
1752		1984
1753	#ifndef _WIN32	1985	#if EV_CHILD_ENABLE
1754	ev_ref (EV_A); /* child watcher */	1986	ev_ref (EV_A); /* child watcher */
1755	ev_signal_stop (EV_A_ &childev);	1987	ev_signal_stop (EV_A_ &childev);
1756	#endif	1988	#endif
1757		1989
1758	loop_destroy (EV_A);	1990	loop_destroy (EV_A);
…		…
1760		1992
1761	void	1993	void
1762	ev_default_fork (void)	1994	ev_default_fork (void)
1763	{	1995	{
1764	#if EV_MULTIPLICITY	1996	#if EV_MULTIPLICITY
1765	struct ev_loop *loop = ev_default_loop_ptr;	1997	EV_P = ev_default_loop_ptr;
1766	#endif	1998	#endif
1767		1999
1768	postfork = 1; /* must be in line with ev_loop_fork */	2000	postfork = 1; /* must be in line with ev_loop_fork */
1769	}	2001	}
1770		2002
…		…
1774	ev_invoke (EV_P_ void *w, int revents)	2006	ev_invoke (EV_P_ void *w, int revents)
1775	{	2007	{
1776	EV_CB_INVOKE ((W)w, revents);	2008	EV_CB_INVOKE ((W)w, revents);
1777	}	2009	}
1778		2010
1779	inline_speed void	2011	unsigned int
1780	call_pending (EV_P)	2012	ev_pending_count (EV_P)
		2013	{
		2014	int pri;
		2015	unsigned int count = 0;
		2016
		2017	for (pri = NUMPRI; pri--; )
		2018	count += pendingcnt [pri];
		2019
		2020	return count;
		2021	}
		2022
		2023	void noinline
		2024	ev_invoke_pending (EV_P)
1781	{	2025	{
1782	int pri;	2026	int pri;
1783		2027
1784	for (pri = NUMPRI; pri--; )	2028	for (pri = NUMPRI; pri--; )
1785	while (pendingcnt [pri])	2029	while (pendingcnt [pri])
…		…
1852	EV_FREQUENT_CHECK;	2096	EV_FREQUENT_CHECK;
1853	feed_reverse (EV_A_ (W)w);	2097	feed_reverse (EV_A_ (W)w);
1854	}	2098	}
1855	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2099	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1856		2100
1857	feed_reverse_done (EV_A_ EV_TIMEOUT);	2101	feed_reverse_done (EV_A_ EV_TIMER);
1858	}	2102	}
1859	}	2103	}
1860		2104
1861	#if EV_PERIODIC_ENABLE	2105	#if EV_PERIODIC_ENABLE
1862	/* make periodics pending */	2106	/* make periodics pending */
…		…
1953	ANHE_at_cache (*he);	2197	ANHE_at_cache (*he);
1954	}	2198	}
1955	}	2199	}
1956		2200
1957	/* fetch new monotonic and realtime times from the kernel */	2201	/* fetch new monotonic and realtime times from the kernel */
1958	/* also detetc if there was a timejump, and act accordingly */	2202	/* also detect if there was a timejump, and act accordingly */
1959	inline_speed void	2203	inline_speed void
1960	time_update (EV_P_ ev_tstamp max_block)	2204	time_update (EV_P_ ev_tstamp max_block)
1961	{	2205	{
1962	#if EV_USE_MONOTONIC	2206	#if EV_USE_MONOTONIC
1963	if (expect_true (have_monotonic))	2207	if (expect_true (have_monotonic))
…		…
2020		2264
2021	mn_now = ev_rt_now;	2265	mn_now = ev_rt_now;
2022	}	2266	}
2023	}	2267	}
2024		2268
2025	static int loop_done;
2026
2027	void	2269	void
2028	ev_loop (EV_P_ int flags)	2270	ev_loop (EV_P_ int flags)
2029	{	2271	{
		2272	#if EV_FEATURE_API
		2273	++loop_depth;
		2274	#endif
		2275
		2276	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));
		2277
2030	loop_done = EVUNLOOP_CANCEL;	2278	loop_done = EVUNLOOP_CANCEL;
2031		2279
2032	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2280	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2033		2281
2034	do	2282	do
2035	{	2283	{
2036	#if EV_VERIFY >= 2	2284	#if EV_VERIFY >= 2
2037	ev_loop_verify (EV_A);	2285	ev_verify (EV_A);
2038	#endif	2286	#endif
2039		2287
2040	#ifndef _WIN32	2288	#ifndef _WIN32
2041	if (expect_false (curpid)) /* penalise the forking check even more */	2289	if (expect_false (curpid)) /* penalise the forking check even more */
2042	if (expect_false (getpid () != curpid))	2290	if (expect_false (getpid () != curpid))
…		…
2050	/* we might have forked, so queue fork handlers */	2298	/* we might have forked, so queue fork handlers */
2051	if (expect_false (postfork))	2299	if (expect_false (postfork))
2052	if (forkcnt)	2300	if (forkcnt)
2053	{	2301	{
2054	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2302	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2055	call_pending (EV_A);	2303	EV_INVOKE_PENDING;
2056	}	2304	}
2057	#endif	2305	#endif
2058		2306
		2307	#if EV_PREPARE_ENABLE
2059	/* queue prepare watchers (and execute them) */	2308	/* queue prepare watchers (and execute them) */
2060	if (expect_false (preparecnt))	2309	if (expect_false (preparecnt))
2061	{	2310	{
2062	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2311	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2063	call_pending (EV_A);	2312	EV_INVOKE_PENDING;
2064	}	2313	}
		2314	#endif
		2315
		2316	if (expect_false (loop_done))
		2317	break;
2065		2318
2066	/* we might have forked, so reify kernel state if necessary */	2319	/* we might have forked, so reify kernel state if necessary */
2067	if (expect_false (postfork))	2320	if (expect_false (postfork))
2068	loop_fork (EV_A);	2321	loop_fork (EV_A);
2069		2322
…		…
2075	ev_tstamp waittime = 0.;	2328	ev_tstamp waittime = 0.;
2076	ev_tstamp sleeptime = 0.;	2329	ev_tstamp sleeptime = 0.;
2077		2330
2078	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2331	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
2079	{	2332	{
		2333	/* remember old timestamp for io_blocktime calculation */
		2334	ev_tstamp prev_mn_now = mn_now;
		2335
2080	/* update time to cancel out callback processing overhead */	2336	/* update time to cancel out callback processing overhead */
2081	time_update (EV_A_ 1e100);	2337	time_update (EV_A_ 1e100);
2082		2338
2083	waittime = MAX_BLOCKTIME;	2339	waittime = MAX_BLOCKTIME;
2084		2340
…		…
2094	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2350	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
2095	if (waittime > to) waittime = to;	2351	if (waittime > to) waittime = to;
2096	}	2352	}
2097	#endif	2353	#endif
2098		2354
		2355	/* don't let timeouts decrease the waittime below timeout_blocktime */
2099	if (expect_false (waittime < timeout_blocktime))	2356	if (expect_false (waittime < timeout_blocktime))
2100	waittime = timeout_blocktime;	2357	waittime = timeout_blocktime;
2101		2358
2102	sleeptime = waittime - backend_fudge;	2359	/* extra check because io_blocktime is commonly 0 */
2103
2104	if (expect_true (sleeptime > io_blocktime))	2360	if (expect_false (io_blocktime))
2105	sleeptime = io_blocktime;
2106
2107	if (sleeptime)
2108	{	2361	{
		2362	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2363
		2364	if (sleeptime > waittime - backend_fudge)
		2365	sleeptime = waittime - backend_fudge;
		2366
		2367	if (expect_true (sleeptime > 0.))
		2368	{
2109	ev_sleep (sleeptime);	2369	ev_sleep (sleeptime);
2110	waittime -= sleeptime;	2370	waittime -= sleeptime;
		2371	}
2111	}	2372	}
2112	}	2373	}
2113		2374
		2375	#if EV_FEATURE_API
2114	++loop_count;	2376	++loop_count;
		2377	#endif
		2378	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */
2115	backend_poll (EV_A_ waittime);	2379	backend_poll (EV_A_ waittime);
		2380	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */
2116		2381
2117	/* update ev_rt_now, do magic */	2382	/* update ev_rt_now, do magic */
2118	time_update (EV_A_ waittime + sleeptime);	2383	time_update (EV_A_ waittime + sleeptime);
2119	}	2384	}
2120		2385
…		…
2127	#if EV_IDLE_ENABLE	2392	#if EV_IDLE_ENABLE
2128	/* queue idle watchers unless other events are pending */	2393	/* queue idle watchers unless other events are pending */
2129	idle_reify (EV_A);	2394	idle_reify (EV_A);
2130	#endif	2395	#endif
2131		2396
		2397	#if EV_CHECK_ENABLE
2132	/* queue check watchers, to be executed first */	2398	/* queue check watchers, to be executed first */
2133	if (expect_false (checkcnt))	2399	if (expect_false (checkcnt))
2134	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2400	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2401	#endif
2135		2402
2136	call_pending (EV_A);	2403	EV_INVOKE_PENDING;
2137	}	2404	}
2138	while (expect_true (	2405	while (expect_true (
2139	activecnt	2406	activecnt
2140	&& !loop_done	2407	&& !loop_done
2141	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2408	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
2142	));	2409	));
2143		2410
2144	if (loop_done == EVUNLOOP_ONE)	2411	if (loop_done == EVUNLOOP_ONE)
2145	loop_done = EVUNLOOP_CANCEL;	2412	loop_done = EVUNLOOP_CANCEL;
		2413
		2414	#if EV_FEATURE_API
		2415	--loop_depth;
		2416	#endif
2146	}	2417	}
2147		2418
2148	void	2419	void
2149	ev_unloop (EV_P_ int how)	2420	ev_unloop (EV_P_ int how)
2150	{	2421	{
…		…
2201	inline_size void	2472	inline_size void
2202	wlist_del (WL *head, WL elem)	2473	wlist_del (WL *head, WL elem)
2203	{	2474	{
2204	while (*head)	2475	while (*head)
2205	{	2476	{
2206	if (*head == elem)	2477	if (expect_true (*head == elem))
2207	{	2478	{
2208	*head = elem->next;	2479	*head = elem->next;
2209	return;	2480	break;
2210	}	2481	}
2211		2482
2212	head = &(*head)->next;	2483	head = &(*head)->next;
2213	}	2484	}
2214	}	2485	}
…		…
2242	}	2513	}
2243		2514
2244	inline_size void	2515	inline_size void
2245	pri_adjust (EV_P_ W w)	2516	pri_adjust (EV_P_ W w)
2246	{	2517	{
2247	int pri = w->priority;	2518	int pri = ev_priority (w);
2248	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2519	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2249	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2520	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2250	w->priority = pri;	2521	ev_set_priority (w, pri);
2251	}	2522	}
2252		2523
2253	inline_speed void	2524	inline_speed void
2254	ev_start (EV_P_ W w, int active)	2525	ev_start (EV_P_ W w, int active)
2255	{	2526	{
…		…
2274		2545
2275	if (expect_false (ev_is_active (w)))	2546	if (expect_false (ev_is_active (w)))
2276	return;	2547	return;
2277		2548
2278	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2549	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2279	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2550	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2280		2551
2281	EV_FREQUENT_CHECK;	2552	EV_FREQUENT_CHECK;
2282		2553
2283	ev_start (EV_A_ (W)w, 1);	2554	ev_start (EV_A_ (W)w, 1);
2284	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2555	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2285	wlist_add (&anfds[fd].head, (WL)w);	2556	wlist_add (&anfds[fd].head, (WL)w);
2286		2557
2287	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);	2558	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2288	w->events &= ~EV__IOFDSET;	2559	w->events &= ~EV__IOFDSET;
2289		2560
2290	EV_FREQUENT_CHECK;	2561	EV_FREQUENT_CHECK;
2291	}	2562	}
2292		2563
…		…
2354	timers [active] = timers [timercnt + HEAP0];	2625	timers [active] = timers [timercnt + HEAP0];
2355	adjustheap (timers, timercnt, active);	2626	adjustheap (timers, timercnt, active);
2356	}	2627	}
2357	}	2628	}
2358		2629
2359	EV_FREQUENT_CHECK;
2360
2361	ev_at (w) -= mn_now;	2630	ev_at (w) -= mn_now;
2362		2631
2363	ev_stop (EV_A_ (W)w);	2632	ev_stop (EV_A_ (W)w);
		2633
		2634	EV_FREQUENT_CHECK;
2364	}	2635	}
2365		2636
2366	void noinline	2637	void noinline
2367	ev_timer_again (EV_P_ ev_timer *w)	2638	ev_timer_again (EV_P_ ev_timer *w)
2368	{	2639	{
…		…
2386	}	2657	}
2387		2658
2388	EV_FREQUENT_CHECK;	2659	EV_FREQUENT_CHECK;
2389	}	2660	}
2390		2661
		2662	ev_tstamp
		2663	ev_timer_remaining (EV_P_ ev_timer *w)
		2664	{
		2665	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2666	}
		2667
2391	#if EV_PERIODIC_ENABLE	2668	#if EV_PERIODIC_ENABLE
2392	void noinline	2669	void noinline
2393	ev_periodic_start (EV_P_ ev_periodic *w)	2670	ev_periodic_start (EV_P_ ev_periodic *w)
2394	{	2671	{
2395	if (expect_false (ev_is_active (w)))	2672	if (expect_false (ev_is_active (w)))
…		…
2441	periodics [active] = periodics [periodiccnt + HEAP0];	2718	periodics [active] = periodics [periodiccnt + HEAP0];
2442	adjustheap (periodics, periodiccnt, active);	2719	adjustheap (periodics, periodiccnt, active);
2443	}	2720	}
2444	}	2721	}
2445		2722
2446	EV_FREQUENT_CHECK;
2447
2448	ev_stop (EV_A_ (W)w);	2723	ev_stop (EV_A_ (W)w);
		2724
		2725	EV_FREQUENT_CHECK;
2449	}	2726	}
2450		2727
2451	void noinline	2728	void noinline
2452	ev_periodic_again (EV_P_ ev_periodic *w)	2729	ev_periodic_again (EV_P_ ev_periodic *w)
2453	{	2730	{
…		…
2459		2736
2460	#ifndef SA_RESTART	2737	#ifndef SA_RESTART
2461	# define SA_RESTART 0	2738	# define SA_RESTART 0
2462	#endif	2739	#endif
2463		2740
		2741	#if EV_SIGNAL_ENABLE
		2742
2464	void noinline	2743	void noinline
2465	ev_signal_start (EV_P_ ev_signal *w)	2744	ev_signal_start (EV_P_ ev_signal *w)
2466	{	2745	{
2467	#if EV_MULTIPLICITY
2468	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2469	#endif
2470	if (expect_false (ev_is_active (w)))	2746	if (expect_false (ev_is_active (w)))
2471	return;	2747	return;
2472		2748
2473	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2749	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2474		2750
2475	evpipe_init (EV_A);	2751	#if EV_MULTIPLICITY
		2752	assert (("libev: a signal must not be attached to two different loops",
		2753	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2476		2754
2477	EV_FREQUENT_CHECK;	2755	signals [w->signum - 1].loop = EV_A;
		2756	#endif
2478		2757
		2758	EV_FREQUENT_CHECK;
		2759
		2760	#if EV_USE_SIGNALFD
		2761	if (sigfd == -2)
2479	{	2762	{
2480	#ifndef _WIN32	2763	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2481	sigset_t full, prev;	2764	if (sigfd < 0 && errno == EINVAL)
2482	sigfillset (&full);	2765	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2483	sigprocmask (SIG_SETMASK, &full, &prev);
2484	#endif
2485		2766
2486	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);	2767	if (sigfd >= 0)
		2768	{
		2769	fd_intern (sigfd); /* doing it twice will not hurt */
2487		2770
2488	#ifndef _WIN32	2771	sigemptyset (&sigfd_set);
2489	sigprocmask (SIG_SETMASK, &prev, 0);	2772
2490	#endif	2773	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		2774	ev_set_priority (&sigfd_w, EV_MAXPRI);
		2775	ev_io_start (EV_A_ &sigfd_w);
		2776	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		2777	}
2491	}	2778	}
		2779
		2780	if (sigfd >= 0)
		2781	{
		2782	/* TODO: check .head */
		2783	sigaddset (&sigfd_set, w->signum);
		2784	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		2785
		2786	signalfd (sigfd, &sigfd_set, 0);
		2787	}
		2788	#endif
2492		2789
2493	ev_start (EV_A_ (W)w, 1);	2790	ev_start (EV_A_ (W)w, 1);
2494	wlist_add (&signals [w->signum - 1].head, (WL)w);	2791	wlist_add (&signals [w->signum - 1].head, (WL)w);
2495		2792
2496	if (!((WL)w)->next)	2793	if (!((WL)w)->next)
		2794	# if EV_USE_SIGNALFD
		2795	if (sigfd < 0) /*TODO*/
		2796	# endif
2497	{	2797	{
2498	#if _WIN32	2798	# ifdef _WIN32
		2799	evpipe_init (EV_A);
		2800
2499	signal (w->signum, ev_sighandler);	2801	signal (w->signum, ev_sighandler);
2500	#else	2802	# else
2501	struct sigaction sa;	2803	struct sigaction sa;
		2804
		2805	evpipe_init (EV_A);
		2806
2502	sa.sa_handler = ev_sighandler;	2807	sa.sa_handler = ev_sighandler;
2503	sigfillset (&sa.sa_mask);	2808	sigfillset (&sa.sa_mask);
2504	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2809	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2505	sigaction (w->signum, &sa, 0);	2810	sigaction (w->signum, &sa, 0);
		2811
		2812	sigemptyset (&sa.sa_mask);
		2813	sigaddset (&sa.sa_mask, w->signum);
		2814	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
2506	#endif	2815	#endif
2507	}	2816	}
2508		2817
2509	EV_FREQUENT_CHECK;	2818	EV_FREQUENT_CHECK;
2510	}	2819	}
2511		2820
2512	void noinline	2821	void noinline
…		…
2520		2829
2521	wlist_del (&signals [w->signum - 1].head, (WL)w);	2830	wlist_del (&signals [w->signum - 1].head, (WL)w);
2522	ev_stop (EV_A_ (W)w);	2831	ev_stop (EV_A_ (W)w);
2523		2832
2524	if (!signals [w->signum - 1].head)	2833	if (!signals [w->signum - 1].head)
		2834	{
		2835	#if EV_MULTIPLICITY
		2836	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2837	#endif
		2838	#if EV_USE_SIGNALFD
		2839	if (sigfd >= 0)
		2840	{
		2841	sigset_t ss;
		2842
		2843	sigemptyset (&ss);
		2844	sigaddset (&ss, w->signum);
		2845	sigdelset (&sigfd_set, w->signum);
		2846
		2847	signalfd (sigfd, &sigfd_set, 0);
		2848	sigprocmask (SIG_UNBLOCK, &ss, 0);
		2849	}
		2850	else
		2851	#endif
2525	signal (w->signum, SIG_DFL);	2852	signal (w->signum, SIG_DFL);
		2853	}
2526		2854
2527	EV_FREQUENT_CHECK;	2855	EV_FREQUENT_CHECK;
2528	}	2856	}
		2857
		2858	#endif
		2859
		2860	#if EV_CHILD_ENABLE
2529		2861
2530	void	2862	void
2531	ev_child_start (EV_P_ ev_child *w)	2863	ev_child_start (EV_P_ ev_child *w)
2532	{	2864	{
2533	#if EV_MULTIPLICITY	2865	#if EV_MULTIPLICITY
…		…
2537	return;	2869	return;
2538		2870
2539	EV_FREQUENT_CHECK;	2871	EV_FREQUENT_CHECK;
2540		2872
2541	ev_start (EV_A_ (W)w, 1);	2873	ev_start (EV_A_ (W)w, 1);
2542	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2874	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2543		2875
2544	EV_FREQUENT_CHECK;	2876	EV_FREQUENT_CHECK;
2545	}	2877	}
2546		2878
2547	void	2879	void
…		…
2551	if (expect_false (!ev_is_active (w)))	2883	if (expect_false (!ev_is_active (w)))
2552	return;	2884	return;
2553		2885
2554	EV_FREQUENT_CHECK;	2886	EV_FREQUENT_CHECK;
2555		2887
2556	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2888	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2557	ev_stop (EV_A_ (W)w);	2889	ev_stop (EV_A_ (W)w);
2558		2890
2559	EV_FREQUENT_CHECK;	2891	EV_FREQUENT_CHECK;
2560	}	2892	}
		2893
		2894	#endif
2561		2895
2562	#if EV_STAT_ENABLE	2896	#if EV_STAT_ENABLE
2563		2897
2564	# ifdef _WIN32	2898	# ifdef _WIN32
2565	# undef lstat	2899	# undef lstat
…		…
2571	#define MIN_STAT_INTERVAL 0.1074891	2905	#define MIN_STAT_INTERVAL 0.1074891
2572		2906
2573	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2907	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2574		2908
2575	#if EV_USE_INOTIFY	2909	#if EV_USE_INOTIFY
2576	# define EV_INOTIFY_BUFSIZE 8192	2910
		2911	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2912	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2577		2913
2578	static void noinline	2914	static void noinline
2579	infy_add (EV_P_ ev_stat *w)	2915	infy_add (EV_P_ ev_stat *w)
2580	{	2916	{
2581	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);	2917	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);
2582		2918
2583	if (w->wd < 0)	2919	if (w->wd >= 0)
		2920	{
		2921	struct statfs sfs;
		2922
		2923	/* now local changes will be tracked by inotify, but remote changes won't */
		2924	/* unless the filesystem is known to be local, we therefore still poll */
		2925	/* also do poll on <2.6.25, but with normal frequency */
		2926
		2927	if (!fs_2625)
		2928	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2929	else if (!statfs (w->path, &sfs)
		2930	&& (sfs.f_type == 0x1373 /* devfs */
		2931	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2932	|| sfs.f_type == 0x3153464a /* jfs */
		2933	|| sfs.f_type == 0x52654973 /* reiser3 */
		2934	|| sfs.f_type == 0x01021994 /* tempfs */
		2935	|| sfs.f_type == 0x58465342 /* xfs */))
		2936	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2937	else
		2938	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2584	{	2939	}
		2940	else
		2941	{
		2942	/* can't use inotify, continue to stat */
2585	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2943	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2586	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2587		2944
2588	/* monitor some parent directory for speedup hints */	2945	/* if path is not there, monitor some parent directory for speedup hints */
2589	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2946	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2590	/* but an efficiency issue only */	2947	/* but an efficiency issue only */
2591	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2948	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2592	{	2949	{
2593	char path [4096];	2950	char path [4096];
…		…
2609	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	2966	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2610	}	2967	}
2611	}	2968	}
2612		2969
2613	if (w->wd >= 0)	2970	if (w->wd >= 0)
2614	{
2615	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	2971	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2616		2972
2617	/* now local changes will be tracked by inotify, but remote changes won't */	2973	/* now re-arm timer, if required */
2618	/* unless the filesystem it known to be local, we therefore still poll */	2974	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2619	/* also do poll on <2.6.25, but with normal frequency */
2620	struct statfs sfs;
2621
2622	if (fs_2625 && !statfs (w->path, &sfs))
2623	if (sfs.f_type == 0x1373 /* devfs */
2624	|| sfs.f_type == 0xEF53 /* ext2/3 */
2625	|| sfs.f_type == 0x3153464a /* jfs */
2626	|| sfs.f_type == 0x52654973 /* reiser3 */
2627	|| sfs.f_type == 0x01021994 /* tempfs */
2628	|| sfs.f_type == 0x58465342 /* xfs */)
2629	return;
2630
2631	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2632	ev_timer_again (EV_A_ &w->timer);	2975	ev_timer_again (EV_A_ &w->timer);
2633	}	2976	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2634	}	2977	}
2635		2978
2636	static void noinline	2979	static void noinline
2637	infy_del (EV_P_ ev_stat *w)	2980	infy_del (EV_P_ ev_stat *w)
2638	{	2981	{
…		…
2641		2984
2642	if (wd < 0)	2985	if (wd < 0)
2643	return;	2986	return;
2644		2987
2645	w->wd = -2;	2988	w->wd = -2;
2646	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	2989	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2647	wlist_del (&fs_hash [slot].head, (WL)w);	2990	wlist_del (&fs_hash [slot].head, (WL)w);
2648		2991
2649	/* remove this watcher, if others are watching it, they will rearm */	2992	/* remove this watcher, if others are watching it, they will rearm */
2650	inotify_rm_watch (fs_fd, wd);	2993	inotify_rm_watch (fs_fd, wd);
2651	}	2994	}
…		…
2653	static void noinline	2996	static void noinline
2654	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	2997	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2655	{	2998	{
2656	if (slot < 0)	2999	if (slot < 0)
2657	/* overflow, need to check for all hash slots */	3000	/* overflow, need to check for all hash slots */
2658	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3001	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2659	infy_wd (EV_A_ slot, wd, ev);	3002	infy_wd (EV_A_ slot, wd, ev);
2660	else	3003	else
2661	{	3004	{
2662	WL w_;	3005	WL w_;
2663		3006
2664	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3007	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2665	{	3008	{
2666	ev_stat *w = (ev_stat *)w_;	3009	ev_stat *w = (ev_stat *)w_;
2667	w_ = w_->next; /* lets us remove this watcher and all before it */	3010	w_ = w_->next; /* lets us remove this watcher and all before it */
2668		3011
2669	if (w->wd == wd || wd == -1)	3012	if (w->wd == wd || wd == -1)
2670	{	3013	{
2671	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3014	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2672	{	3015	{
2673	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3016	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2674	w->wd = -1;	3017	w->wd = -1;
2675	infy_add (EV_A_ w); /* re-add, no matter what */	3018	infy_add (EV_A_ w); /* re-add, no matter what */
2676	}	3019	}
2677		3020
2678	stat_timer_cb (EV_A_ &w->timer, 0);	3021	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2683		3026
2684	static void	3027	static void
2685	infy_cb (EV_P_ ev_io *w, int revents)	3028	infy_cb (EV_P_ ev_io *w, int revents)
2686	{	3029	{
2687	char buf [EV_INOTIFY_BUFSIZE];	3030	char buf [EV_INOTIFY_BUFSIZE];
2688	struct inotify_event *ev = (struct inotify_event *)buf;
2689	int ofs;	3031	int ofs;
2690	int len = read (fs_fd, buf, sizeof (buf));	3032	int len = read (fs_fd, buf, sizeof (buf));
2691		3033
2692	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3034	for (ofs = 0; ofs < len; )
		3035	{
		3036	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2693	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3037	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3038	ofs += sizeof (struct inotify_event) + ev->len;
		3039	}
		3040	}
		3041
		3042	inline_size unsigned int
		3043	ev_linux_version (void)
		3044	{
		3045	struct utsname buf;
		3046	unsigned int v;
		3047	int i;
		3048	char *p = buf.release;
		3049
		3050	if (uname (&buf))
		3051	return 0;
		3052
		3053	for (i = 3+1; --i; )
		3054	{
		3055	unsigned int c = 0;
		3056
		3057	for (;;)
		3058	{
		3059	if (*p >= '0' && *p <= '9')
		3060	c = c * 10 + *p++ - '0';
		3061	else
		3062	{
		3063	p += *p == '.';
		3064	break;
		3065	}
		3066	}
		3067
		3068	v = (v << 8) | c;
		3069	}
		3070
		3071	return v;
2694	}	3072	}
2695		3073
2696	inline_size void	3074	inline_size void
2697	check_2625 (EV_P)	3075	ev_check_2625 (EV_P)
2698	{	3076	{
2699	/* kernels < 2.6.25 are borked	3077	/* kernels < 2.6.25 are borked
2700	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3078	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2701	*/	3079	*/
2702	struct utsname buf;	3080	if (ev_linux_version () < 0x020619)
2703	int major, minor, micro;
2704
2705	if (uname (&buf))
2706	return;	3081	return;
2707		3082
2708	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2709	return;
2710
2711	if (major < 2
2712	|| (major == 2 && minor < 6)
2713	|| (major == 2 && minor == 6 && micro < 25))
2714	return;
2715
2716	fs_2625 = 1;	3083	fs_2625 = 1;
		3084	}
		3085
		3086	inline_size int
		3087	infy_newfd (void)
		3088	{
		3089	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3090	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3091	if (fd >= 0)
		3092	return fd;
		3093	#endif
		3094	return inotify_init ();
2717	}	3095	}
2718		3096
2719	inline_size void	3097	inline_size void
2720	infy_init (EV_P)	3098	infy_init (EV_P)
2721	{	3099	{
2722	if (fs_fd != -2)	3100	if (fs_fd != -2)
2723	return;	3101	return;
2724		3102
2725	fs_fd = -1;	3103	fs_fd = -1;
2726		3104
2727	check_2625 (EV_A);	3105	ev_check_2625 (EV_A);
2728		3106
2729	fs_fd = inotify_init ();	3107	fs_fd = infy_newfd ();
2730		3108
2731	if (fs_fd >= 0)	3109	if (fs_fd >= 0)
2732	{	3110	{
		3111	fd_intern (fs_fd);
2733	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3112	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2734	ev_set_priority (&fs_w, EV_MAXPRI);	3113	ev_set_priority (&fs_w, EV_MAXPRI);
2735	ev_io_start (EV_A_ &fs_w);	3114	ev_io_start (EV_A_ &fs_w);
		3115	ev_unref (EV_A);
2736	}	3116	}
2737	}	3117	}
2738		3118
2739	inline_size void	3119	inline_size void
2740	infy_fork (EV_P)	3120	infy_fork (EV_P)
…		…
2742	int slot;	3122	int slot;
2743		3123
2744	if (fs_fd < 0)	3124	if (fs_fd < 0)
2745	return;	3125	return;
2746		3126
		3127	ev_ref (EV_A);
		3128	ev_io_stop (EV_A_ &fs_w);
2747	close (fs_fd);	3129	close (fs_fd);
2748	fs_fd = inotify_init ();	3130	fs_fd = infy_newfd ();
2749		3131
		3132	if (fs_fd >= 0)
		3133	{
		3134	fd_intern (fs_fd);
		3135	ev_io_set (&fs_w, fs_fd, EV_READ);
		3136	ev_io_start (EV_A_ &fs_w);
		3137	ev_unref (EV_A);
		3138	}
		3139
2750	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3140	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2751	{	3141	{
2752	WL w_ = fs_hash [slot].head;	3142	WL w_ = fs_hash [slot].head;
2753	fs_hash [slot].head = 0;	3143	fs_hash [slot].head = 0;
2754		3144
2755	while (w_)	3145	while (w_)
…		…
2760	w->wd = -1;	3150	w->wd = -1;
2761		3151
2762	if (fs_fd >= 0)	3152	if (fs_fd >= 0)
2763	infy_add (EV_A_ w); /* re-add, no matter what */	3153	infy_add (EV_A_ w); /* re-add, no matter what */
2764	else	3154	else
		3155	{
		3156	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3157	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2765	ev_timer_again (EV_A_ &w->timer);	3158	ev_timer_again (EV_A_ &w->timer);
		3159	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3160	}
2766	}	3161	}
2767	}	3162	}
2768	}	3163	}
2769		3164
2770	#endif	3165	#endif
…		…
2787	static void noinline	3182	static void noinline
2788	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3183	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2789	{	3184	{
2790	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3185	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2791		3186
2792	/* we copy this here each the time so that */	3187	ev_statdata prev = w->attr;
2793	/* prev has the old value when the callback gets invoked */
2794	w->prev = w->attr;
2795	ev_stat_stat (EV_A_ w);	3188	ev_stat_stat (EV_A_ w);
2796		3189
2797	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3190	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2798	if (	3191	if (
2799	w->prev.st_dev != w->attr.st_dev	3192	prev.st_dev != w->attr.st_dev
2800	|| w->prev.st_ino != w->attr.st_ino	3193	|| prev.st_ino != w->attr.st_ino
2801	|| w->prev.st_mode != w->attr.st_mode	3194	|| prev.st_mode != w->attr.st_mode
2802	|| w->prev.st_nlink != w->attr.st_nlink	3195	|| prev.st_nlink != w->attr.st_nlink
2803	|| w->prev.st_uid != w->attr.st_uid	3196	|| prev.st_uid != w->attr.st_uid
2804	|| w->prev.st_gid != w->attr.st_gid	3197	|| prev.st_gid != w->attr.st_gid
2805	|| w->prev.st_rdev != w->attr.st_rdev	3198	|| prev.st_rdev != w->attr.st_rdev
2806	|| w->prev.st_size != w->attr.st_size	3199	|| prev.st_size != w->attr.st_size
2807	|| w->prev.st_atime != w->attr.st_atime	3200	|| prev.st_atime != w->attr.st_atime
2808	|| w->prev.st_mtime != w->attr.st_mtime	3201	|| prev.st_mtime != w->attr.st_mtime
2809	|| w->prev.st_ctime != w->attr.st_ctime	3202	|| prev.st_ctime != w->attr.st_ctime
2810	) {	3203	) {
		3204	/* we only update w->prev on actual differences */
		3205	/* in case we test more often than invoke the callback, */
		3206	/* to ensure that prev is always different to attr */
		3207	w->prev = prev;
		3208
2811	#if EV_USE_INOTIFY	3209	#if EV_USE_INOTIFY
2812	if (fs_fd >= 0)	3210	if (fs_fd >= 0)
2813	{	3211	{
2814	infy_del (EV_A_ w);	3212	infy_del (EV_A_ w);
2815	infy_add (EV_A_ w);	3213	infy_add (EV_A_ w);
…		…
2840		3238
2841	if (fs_fd >= 0)	3239	if (fs_fd >= 0)
2842	infy_add (EV_A_ w);	3240	infy_add (EV_A_ w);
2843	else	3241	else
2844	#endif	3242	#endif
		3243	{
2845	ev_timer_again (EV_A_ &w->timer);	3244	ev_timer_again (EV_A_ &w->timer);
		3245	ev_unref (EV_A);
		3246	}
2846		3247
2847	ev_start (EV_A_ (W)w, 1);	3248	ev_start (EV_A_ (W)w, 1);
2848		3249
2849	EV_FREQUENT_CHECK;	3250	EV_FREQUENT_CHECK;
2850	}	3251	}
…		…
2859	EV_FREQUENT_CHECK;	3260	EV_FREQUENT_CHECK;
2860		3261
2861	#if EV_USE_INOTIFY	3262	#if EV_USE_INOTIFY
2862	infy_del (EV_A_ w);	3263	infy_del (EV_A_ w);
2863	#endif	3264	#endif
		3265
		3266	if (ev_is_active (&w->timer))
		3267	{
		3268	ev_ref (EV_A);
2864	ev_timer_stop (EV_A_ &w->timer);	3269	ev_timer_stop (EV_A_ &w->timer);
		3270	}
2865		3271
2866	ev_stop (EV_A_ (W)w);	3272	ev_stop (EV_A_ (W)w);
2867		3273
2868	EV_FREQUENT_CHECK;	3274	EV_FREQUENT_CHECK;
2869	}	3275	}
…		…
2914		3320
2915	EV_FREQUENT_CHECK;	3321	EV_FREQUENT_CHECK;
2916	}	3322	}
2917	#endif	3323	#endif
2918		3324
		3325	#if EV_PREPARE_ENABLE
2919	void	3326	void
2920	ev_prepare_start (EV_P_ ev_prepare *w)	3327	ev_prepare_start (EV_P_ ev_prepare *w)
2921	{	3328	{
2922	if (expect_false (ev_is_active (w)))	3329	if (expect_false (ev_is_active (w)))
2923	return;	3330	return;
…		…
2949		3356
2950	ev_stop (EV_A_ (W)w);	3357	ev_stop (EV_A_ (W)w);
2951		3358
2952	EV_FREQUENT_CHECK;	3359	EV_FREQUENT_CHECK;
2953	}	3360	}
		3361	#endif
2954		3362
		3363	#if EV_CHECK_ENABLE
2955	void	3364	void
2956	ev_check_start (EV_P_ ev_check *w)	3365	ev_check_start (EV_P_ ev_check *w)
2957	{	3366	{
2958	if (expect_false (ev_is_active (w)))	3367	if (expect_false (ev_is_active (w)))
2959	return;	3368	return;
…		…
2985		3394
2986	ev_stop (EV_A_ (W)w);	3395	ev_stop (EV_A_ (W)w);
2987		3396
2988	EV_FREQUENT_CHECK;	3397	EV_FREQUENT_CHECK;
2989	}	3398	}
		3399	#endif
2990		3400
2991	#if EV_EMBED_ENABLE	3401	#if EV_EMBED_ENABLE
2992	void noinline	3402	void noinline
2993	ev_embed_sweep (EV_P_ ev_embed *w)	3403	ev_embed_sweep (EV_P_ ev_embed *w)
2994	{	3404	{
…		…
3010	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3420	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3011	{	3421	{
3012	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3422	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3013		3423
3014	{	3424	{
3015	struct ev_loop *loop = w->other;	3425	EV_P = w->other;
3016		3426
3017	while (fdchangecnt)	3427	while (fdchangecnt)
3018	{	3428	{
3019	fd_reify (EV_A);	3429	fd_reify (EV_A);
3020	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3430	ev_loop (EV_A_ EVLOOP_NONBLOCK);
…		…
3028	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3438	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3029		3439
3030	ev_embed_stop (EV_A_ w);	3440	ev_embed_stop (EV_A_ w);
3031		3441
3032	{	3442	{
3033	struct ev_loop *loop = w->other;	3443	EV_P = w->other;
3034		3444
3035	ev_loop_fork (EV_A);	3445	ev_loop_fork (EV_A);
3036	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3446	ev_loop (EV_A_ EVLOOP_NONBLOCK);
3037	}	3447	}
3038		3448
…		…
3052	{	3462	{
3053	if (expect_false (ev_is_active (w)))	3463	if (expect_false (ev_is_active (w)))
3054	return;	3464	return;
3055		3465
3056	{	3466	{
3057	struct ev_loop *loop = w->other;	3467	EV_P = w->other;
3058	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3468	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3059	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3469	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3060	}	3470	}
3061		3471
3062	EV_FREQUENT_CHECK;	3472	EV_FREQUENT_CHECK;
…		…
3089		3499
3090	ev_io_stop (EV_A_ &w->io);	3500	ev_io_stop (EV_A_ &w->io);
3091	ev_prepare_stop (EV_A_ &w->prepare);	3501	ev_prepare_stop (EV_A_ &w->prepare);
3092	ev_fork_stop (EV_A_ &w->fork);	3502	ev_fork_stop (EV_A_ &w->fork);
3093		3503
		3504	ev_stop (EV_A_ (W)w);
		3505
3094	EV_FREQUENT_CHECK;	3506	EV_FREQUENT_CHECK;
3095	}	3507	}
3096	#endif	3508	#endif
3097		3509
3098	#if EV_FORK_ENABLE	3510	#if EV_FORK_ENABLE
…		…
3174		3586
3175	void	3587	void
3176	ev_async_send (EV_P_ ev_async *w)	3588	ev_async_send (EV_P_ ev_async *w)
3177	{	3589	{
3178	w->sent = 1;	3590	w->sent = 1;
3179	evpipe_write (EV_A_ &gotasync);	3591	evpipe_write (EV_A_ &async_pending);
3180	}	3592	}
3181	#endif	3593	#endif
3182		3594
3183	/*****************************************************************************/	3595	/*****************************************************************************/
3184		3596
…		…
3224	{	3636	{
3225	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3637	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3226		3638
3227	if (expect_false (!once))	3639	if (expect_false (!once))
3228	{	3640	{
3229	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3641	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3230	return;	3642	return;
3231	}	3643	}
3232		3644
3233	once->cb = cb;	3645	once->cb = cb;
3234	once->arg = arg;	3646	once->arg = arg;
…		…
3321	if (types & EV_ASYNC)	3733	if (types & EV_ASYNC)
3322	for (i = asynccnt; i--; )	3734	for (i = asynccnt; i--; )
3323	cb (EV_A_ EV_ASYNC, asyncs [i]);	3735	cb (EV_A_ EV_ASYNC, asyncs [i]);
3324	#endif	3736	#endif
3325		3737
		3738	#if EV_PREPARE_ENABLE
3326	if (types & EV_PREPARE)	3739	if (types & EV_PREPARE)
3327	for (i = preparecnt; i--; )	3740	for (i = preparecnt; i--; )
3328	#if EV_EMBED_ENABLE	3741	# if EV_EMBED_ENABLE
3329	if (ev_cb (prepares [i]) != embed_prepare_cb)	3742	if (ev_cb (prepares [i]) != embed_prepare_cb)
3330	#endif	3743	# endif
3331	cb (EV_A_ EV_PREPARE, prepares [i]);	3744	cb (EV_A_ EV_PREPARE, prepares [i]);
		3745	#endif
3332		3746
		3747	#if EV_CHECK_ENABLE
3333	if (types & EV_CHECK)	3748	if (types & EV_CHECK)
3334	for (i = checkcnt; i--; )	3749	for (i = checkcnt; i--; )
3335	cb (EV_A_ EV_CHECK, checks [i]);	3750	cb (EV_A_ EV_CHECK, checks [i]);
		3751	#endif
3336		3752
		3753	#if EV_SIGNAL_ENABLE
3337	if (types & EV_SIGNAL)	3754	if (types & EV_SIGNAL)
3338	for (i = 0; i < signalmax; ++i)	3755	for (i = 0; i < EV_NSIG - 1; ++i)
3339	for (wl = signals [i].head; wl; )	3756	for (wl = signals [i].head; wl; )
3340	{	3757	{
3341	wn = wl->next;	3758	wn = wl->next;
3342	cb (EV_A_ EV_SIGNAL, wl);	3759	cb (EV_A_ EV_SIGNAL, wl);
3343	wl = wn;	3760	wl = wn;
3344	}	3761	}
		3762	#endif
3345		3763
		3764	#if EV_CHILD_ENABLE
3346	if (types & EV_CHILD)	3765	if (types & EV_CHILD)
3347	for (i = EV_PID_HASHSIZE; i--; )	3766	for (i = (EV_PID_HASHSIZE); i--; )
3348	for (wl = childs [i]; wl; )	3767	for (wl = childs [i]; wl; )
3349	{	3768	{
3350	wn = wl->next;	3769	wn = wl->next;
3351	cb (EV_A_ EV_CHILD, wl);	3770	cb (EV_A_ EV_CHILD, wl);
3352	wl = wn;	3771	wl = wn;
3353	}	3772	}
		3773	#endif
3354	/* EV_STAT 0x00001000 /* stat data changed */	3774	/* EV_STAT 0x00001000 /* stat data changed */
3355	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3775	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3356	}	3776	}
3357	#endif	3777	#endif
3358		3778

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