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Comparing libev/ev.c (file contents):
Revision 1.305 by root, Sun Jul 19 03:49:04 2009 UTC vs.
Revision 1.355 by root, Fri Oct 22 10:09:12 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	*
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus
41	extern "C" {
42	#endif
43
44	/* this big block deduces configuration from config.h */	40	/* this big block deduces configuration from config.h */
45	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
46	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
47	# include EV_CONFIG_H	43	# include EV_CONFIG_H
48	# else	44	# else
…		…
77	# ifndef EV_USE_REALTIME	73	# ifndef EV_USE_REALTIME
78	# define EV_USE_REALTIME 0	74	# define EV_USE_REALTIME 0
79	# endif	75	# endif
80	# endif	76	# endif
81		77
		78	# if HAVE_NANOSLEEP
82	# ifndef EV_USE_NANOSLEEP	79	# ifndef EV_USE_NANOSLEEP
83	# if HAVE_NANOSLEEP
84	# define EV_USE_NANOSLEEP 1	80	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		81	# endif
85	# else	82	# else
		83	# undef EV_USE_NANOSLEEP
86	# define EV_USE_NANOSLEEP 0	84	# define EV_USE_NANOSLEEP 0
		85	# endif
		86
		87	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		88	# ifndef EV_USE_SELECT
		89	# define EV_USE_SELECT EV_FEATURE_BACKENDS
87	# endif	90	# endif
		91	# else
		92	# undef EV_USE_SELECT
		93	# define EV_USE_SELECT 0
88	# endif	94	# endif
89		95
		96	# if HAVE_POLL && HAVE_POLL_H
90	# ifndef EV_USE_SELECT	97	# ifndef EV_USE_POLL
91	# if HAVE_SELECT && HAVE_SYS_SELECT_H	98	# define EV_USE_POLL EV_FEATURE_BACKENDS
92	# define EV_USE_SELECT 1
93	# else
94	# define EV_USE_SELECT 0
95	# endif	99	# endif
96	# endif
97
98	# ifndef EV_USE_POLL
99	# if HAVE_POLL && HAVE_POLL_H
100	# define EV_USE_POLL 1
101	# else	100	# else
		101	# undef EV_USE_POLL
102	# define EV_USE_POLL 0	102	# define EV_USE_POLL 0
103	# endif
104	# endif	103	# endif
105		104
106	# ifndef EV_USE_EPOLL
107	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	105	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
108	# define EV_USE_EPOLL 1	106	# ifndef EV_USE_EPOLL
109	# else	107	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
110	# define EV_USE_EPOLL 0
111	# endif	108	# endif
		109	# else
		110	# undef EV_USE_EPOLL
		111	# define EV_USE_EPOLL 0
112	# endif	112	# endif
113		113
		114	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
114	# ifndef EV_USE_KQUEUE	115	# ifndef EV_USE_KQUEUE
115	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	116	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
116	# define EV_USE_KQUEUE 1
117	# else
118	# define EV_USE_KQUEUE 0
119	# endif	117	# endif
		118	# else
		119	# undef EV_USE_KQUEUE
		120	# define EV_USE_KQUEUE 0
120	# endif	121	# endif
121		122
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	# ifndef EV_USE_PORT
125	# else	125	# define EV_USE_PORT EV_FEATURE_BACKENDS
126	# define EV_USE_PORT 0
127	# endif	126	# endif
		127	# else
		128	# undef EV_USE_PORT
		129	# define EV_USE_PORT 0
128	# endif	130	# endif
129		131
130	# ifndef EV_USE_INOTIFY
131	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	132	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
132	# define EV_USE_INOTIFY 1	133	# ifndef EV_USE_INOTIFY
133	# else
134	# define EV_USE_INOTIFY 0	134	# define EV_USE_INOTIFY EV_FEATURE_OS
135	# endif	135	# endif
		136	# else
		137	# undef EV_USE_INOTIFY
		138	# define EV_USE_INOTIFY 0
136	# endif	139	# endif
137		140
138	# ifndef EV_USE_SIGNALFD
139	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H	141	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
140	# define EV_USE_SIGNALFD 1	142	# ifndef EV_USE_SIGNALFD
141	# else
142	# define EV_USE_SIGNALFD 0	143	# define EV_USE_SIGNALFD EV_FEATURE_OS
143	# endif	144	# endif
		145	# else
		146	# undef EV_USE_SIGNALFD
		147	# define EV_USE_SIGNALFD 0
144	# endif	148	# endif
145		149
		150	# if HAVE_EVENTFD
146	# ifndef EV_USE_EVENTFD	151	# ifndef EV_USE_EVENTFD
147	# if HAVE_EVENTFD
148	# define EV_USE_EVENTFD 1	152	# define EV_USE_EVENTFD EV_FEATURE_OS
149	# else
150	# define EV_USE_EVENTFD 0
151	# endif	153	# endif
		154	# else
		155	# undef EV_USE_EVENTFD
		156	# define EV_USE_EVENTFD 0
152	# endif	157	# endif
153		158
154	#endif	159	#endif
155		160
156	#include <math.h>	161	#include <math.h>
157	#include <stdlib.h>	162	#include <stdlib.h>
		163	#include <string.h>
158	#include <fcntl.h>	164	#include <fcntl.h>
159	#include <stddef.h>	165	#include <stddef.h>
160		166
161	#include <stdio.h>	167	#include <stdio.h>
162		168
163	#include <assert.h>	169	#include <assert.h>
164	#include <errno.h>	170	#include <errno.h>
165	#include <sys/types.h>	171	#include <sys/types.h>
166	#include <time.h>	172	#include <time.h>
		173	#include <limits.h>
167		174
168	#include <signal.h>	175	#include <signal.h>
169		176
170	#ifdef EV_H	177	#ifdef EV_H
171	# include EV_H	178	# include EV_H
172	#else	179	#else
173	# include "ev.h"	180	# include "ev.h"
174	#endif	181	#endif
		182
		183	EV_CPP(extern "C" {)
175		184
176	#ifndef _WIN32	185	#ifndef _WIN32
177	# include <sys/time.h>	186	# include <sys/time.h>
178	# include <sys/wait.h>	187	# include <sys/wait.h>
179	# include <unistd.h>	188	# include <unistd.h>
…		…
182	# define WIN32_LEAN_AND_MEAN	191	# define WIN32_LEAN_AND_MEAN
183	# include <windows.h>	192	# include <windows.h>
184	# ifndef EV_SELECT_IS_WINSOCKET	193	# ifndef EV_SELECT_IS_WINSOCKET
185	# define EV_SELECT_IS_WINSOCKET 1	194	# define EV_SELECT_IS_WINSOCKET 1
186	# endif	195	# endif
		196	# undef EV_AVOID_STDIO
187	#endif	197	#endif
		198
		199	/* OS X, in its infinite idiocy, actually HARDCODES
		200	* a limit of 1024 into their select. Where people have brains,
		201	* OS X engineers apparently have a vacuum. Or maybe they were
		202	* ordered to have a vacuum, or they do anything for money.
		203	* This might help. Or not.
		204	*/
		205	#define _DARWIN_UNLIMITED_SELECT 1
188		206
189	/* this block tries to deduce configuration from header-defined symbols and defaults */	207	/* this block tries to deduce configuration from header-defined symbols and defaults */
190		208
191	/* try to deduce the maximum number of signals on this platform */	209	/* try to deduce the maximum number of signals on this platform */
192	#if defined (EV_NSIG)	210	#if defined (EV_NSIG)
…		…
204	#elif defined (MAXSIG)	222	#elif defined (MAXSIG)
205	# define EV_NSIG (MAXSIG+1)	223	# define EV_NSIG (MAXSIG+1)
206	#elif defined (MAX_SIG)	224	#elif defined (MAX_SIG)
207	# define EV_NSIG (MAX_SIG+1)	225	# define EV_NSIG (MAX_SIG+1)
208	#elif defined (SIGARRAYSIZE)	226	#elif defined (SIGARRAYSIZE)
209	# define EV_NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */	227	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
210	#elif defined (_sys_nsig)	228	#elif defined (_sys_nsig)
211	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */	229	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
212	#else	230	#else
213	# error "unable to find value for NSIG, please report"	231	# error "unable to find value for NSIG, please report"
214	/* to make it compile regardless, just remove the above line */	232	/* to make it compile regardless, just remove the above line, */
		233	/* but consider reporting it, too! :) */
215	# define EV_NSIG 64	234	# define EV_NSIG 65
216	#endif	235	#endif
217		236
218	/* Default to some arbitrary number that's big enough to get most
219	of the common signals.
220	*/
221	#ifndef NSIG
222	# define NSIG 50
223	#endif
224	/* <-- NSIG logic from Configure */
225	#ifndef EV_USE_CLOCK_SYSCALL	237	#ifndef EV_USE_CLOCK_SYSCALL
226	# if __linux && __GLIBC__ >= 2	238	# if __linux && __GLIBC__ >= 2
227	# define EV_USE_CLOCK_SYSCALL 1	239	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
228	# else	240	# else
229	# define EV_USE_CLOCK_SYSCALL 0	241	# define EV_USE_CLOCK_SYSCALL 0
230	# endif	242	# endif
231	#endif	243	#endif
232		244
233	#ifndef EV_USE_MONOTONIC	245	#ifndef EV_USE_MONOTONIC
234	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0	246	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
235	# define EV_USE_MONOTONIC 1	247	# define EV_USE_MONOTONIC EV_FEATURE_OS
236	# else	248	# else
237	# define EV_USE_MONOTONIC 0	249	# define EV_USE_MONOTONIC 0
238	# endif	250	# endif
239	#endif	251	#endif
240		252
…		…
242	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL	254	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
243	#endif	255	#endif
244		256
245	#ifndef EV_USE_NANOSLEEP	257	#ifndef EV_USE_NANOSLEEP
246	# if _POSIX_C_SOURCE >= 199309L	258	# if _POSIX_C_SOURCE >= 199309L
247	# define EV_USE_NANOSLEEP 1	259	# define EV_USE_NANOSLEEP EV_FEATURE_OS
248	# else	260	# else
249	# define EV_USE_NANOSLEEP 0	261	# define EV_USE_NANOSLEEP 0
250	# endif	262	# endif
251	#endif	263	#endif
252		264
253	#ifndef EV_USE_SELECT	265	#ifndef EV_USE_SELECT
254	# define EV_USE_SELECT 1	266	# define EV_USE_SELECT EV_FEATURE_BACKENDS
255	#endif	267	#endif
256		268
257	#ifndef EV_USE_POLL	269	#ifndef EV_USE_POLL
258	# ifdef _WIN32	270	# ifdef _WIN32
259	# define EV_USE_POLL 0	271	# define EV_USE_POLL 0
260	# else	272	# else
261	# define EV_USE_POLL 1	273	# define EV_USE_POLL EV_FEATURE_BACKENDS
262	# endif	274	# endif
263	#endif	275	#endif
264		276
265	#ifndef EV_USE_EPOLL	277	#ifndef EV_USE_EPOLL
266	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	278	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
267	# define EV_USE_EPOLL 1	279	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
268	# else	280	# else
269	# define EV_USE_EPOLL 0	281	# define EV_USE_EPOLL 0
270	# endif	282	# endif
271	#endif	283	#endif
272		284
…		…
278	# define EV_USE_PORT 0	290	# define EV_USE_PORT 0
279	#endif	291	#endif
280		292
281	#ifndef EV_USE_INOTIFY	293	#ifndef EV_USE_INOTIFY
282	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	294	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
283	# define EV_USE_INOTIFY 1	295	# define EV_USE_INOTIFY EV_FEATURE_OS
284	# else	296	# else
285	# define EV_USE_INOTIFY 0	297	# define EV_USE_INOTIFY 0
286	# endif	298	# endif
287	#endif	299	#endif
288		300
289	#ifndef EV_PID_HASHSIZE	301	#ifndef EV_PID_HASHSIZE
290	# if EV_MINIMAL	302	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
291	# define EV_PID_HASHSIZE 1
292	# else
293	# define EV_PID_HASHSIZE 16
294	# endif
295	#endif	303	#endif
296		304
297	#ifndef EV_INOTIFY_HASHSIZE	305	#ifndef EV_INOTIFY_HASHSIZE
298	# if EV_MINIMAL	306	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
299	# define EV_INOTIFY_HASHSIZE 1
300	# else
301	# define EV_INOTIFY_HASHSIZE 16
302	# endif
303	#endif	307	#endif
304		308
305	#ifndef EV_USE_EVENTFD	309	#ifndef EV_USE_EVENTFD
306	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	310	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
307	# define EV_USE_EVENTFD 1	311	# define EV_USE_EVENTFD EV_FEATURE_OS
308	# else	312	# else
309	# define EV_USE_EVENTFD 0	313	# define EV_USE_EVENTFD 0
310	# endif	314	# endif
311	#endif	315	#endif
312		316
313	#ifndef EV_USE_SIGNALFD	317	#ifndef EV_USE_SIGNALFD
314	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 9))	318	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
315	# define EV_USE_SIGNALFD 1	319	# define EV_USE_SIGNALFD EV_FEATURE_OS
316	# else	320	# else
317	# define EV_USE_SIGNALFD 0	321	# define EV_USE_SIGNALFD 0
318	# endif	322	# endif
319	#endif	323	#endif
320		324
…		…
323	# define EV_USE_4HEAP 1	327	# define EV_USE_4HEAP 1
324	# define EV_HEAP_CACHE_AT 1	328	# define EV_HEAP_CACHE_AT 1
325	#endif	329	#endif
326		330
327	#ifndef EV_VERIFY	331	#ifndef EV_VERIFY
328	# define EV_VERIFY !EV_MINIMAL	332	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
329	#endif	333	#endif
330		334
331	#ifndef EV_USE_4HEAP	335	#ifndef EV_USE_4HEAP
332	# define EV_USE_4HEAP !EV_MINIMAL	336	# define EV_USE_4HEAP EV_FEATURE_DATA
333	#endif	337	#endif
334		338
335	#ifndef EV_HEAP_CACHE_AT	339	#ifndef EV_HEAP_CACHE_AT
336	# define EV_HEAP_CACHE_AT !EV_MINIMAL	340	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
337	#endif	341	#endif
338		342
339	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */	343	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
340	/* which makes programs even slower. might work on other unices, too. */	344	/* which makes programs even slower. might work on other unices, too. */
341	#if EV_USE_CLOCK_SYSCALL	345	#if EV_USE_CLOCK_SYSCALL
…		…
350	# endif	354	# endif
351	#endif	355	#endif
352		356
353	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	357	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
354		358
		359	#ifdef _AIX
		360	/* AIX has a completely broken poll.h header */
		361	# undef EV_USE_POLL
		362	# define EV_USE_POLL 0
		363	#endif
		364
355	#ifndef CLOCK_MONOTONIC	365	#ifndef CLOCK_MONOTONIC
356	# undef EV_USE_MONOTONIC	366	# undef EV_USE_MONOTONIC
357	# define EV_USE_MONOTONIC 0	367	# define EV_USE_MONOTONIC 0
358	#endif	368	#endif
359		369
…		…
393	# include <stdint.h>	403	# include <stdint.h>
394	# ifndef EFD_NONBLOCK	404	# ifndef EFD_NONBLOCK
395	# define EFD_NONBLOCK O_NONBLOCK	405	# define EFD_NONBLOCK O_NONBLOCK
396	# endif	406	# endif
397	# ifndef EFD_CLOEXEC	407	# ifndef EFD_CLOEXEC
		408	# ifdef O_CLOEXEC
398	# define EFD_CLOEXEC O_CLOEXEC	409	# define EFD_CLOEXEC O_CLOEXEC
		410	# else
		411	# define EFD_CLOEXEC 02000000
		412	# endif
399	# endif	413	# endif
400	# ifdef __cplusplus	414	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
401	extern "C" {	415	#endif
		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
402	# endif	422	# endif
403	int eventfd (unsigned int initval, int flags);	423	# ifndef SFD_CLOEXEC
404	# ifdef __cplusplus	424	# ifdef O_CLOEXEC
405	}	425	# define SFD_CLOEXEC O_CLOEXEC
		426	# else
		427	# define SFD_CLOEXEC 02000000
		428	# endif
406	# endif	429	# endif
407	#endif	430	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
408		431
409	#if EV_USE_SIGNALFD	432	struct signalfd_siginfo
410	# include <sys/signalfd.h>	433	{
		434	uint32_t ssi_signo;
		435	char pad[128 - sizeof (uint32_t)];
		436	};
411	#endif	437	#endif
412		438
413	/**/	439	/**/
414		440
415	#if EV_VERIFY >= 3	441	#if EV_VERIFY >= 3
416	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	442	# define EV_FREQUENT_CHECK ev_verify (EV_A)
417	#else	443	#else
418	# define EV_FREQUENT_CHECK do { } while (0)	444	# define EV_FREQUENT_CHECK do { } while (0)
419	#endif	445	#endif
420		446
421	/*	447	/*
…		…
428	*/	454	*/
429	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	455	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
430		456
431	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	457	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
432	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	458	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
433	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */	459
		460	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
		461	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
434		462
435	#if __GNUC__ >= 4	463	#if __GNUC__ >= 4
436	# define expect(expr,value) __builtin_expect ((expr),(value))	464	# define expect(expr,value) __builtin_expect ((expr),(value))
437	# define noinline __attribute__ ((noinline))	465	# define noinline __attribute__ ((noinline))
438	#else	466	#else
…		…
445		473
446	#define expect_false(expr) expect ((expr) != 0, 0)	474	#define expect_false(expr) expect ((expr) != 0, 0)
447	#define expect_true(expr) expect ((expr) != 0, 1)	475	#define expect_true(expr) expect ((expr) != 0, 1)
448	#define inline_size static inline	476	#define inline_size static inline
449		477
450	#if EV_MINIMAL	478	#if EV_FEATURE_CODE
		479	# define inline_speed static inline
		480	#else
451	# define inline_speed static noinline	481	# define inline_speed static noinline
452	#else
453	# define inline_speed static inline
454	#endif	482	#endif
455		483
456	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	484	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
457		485
458	#if EV_MINPRI == EV_MAXPRI	486	#if EV_MINPRI == EV_MAXPRI
…		…
471	#define ev_active(w) ((W)(w))->active	499	#define ev_active(w) ((W)(w))->active
472	#define ev_at(w) ((WT)(w))->at	500	#define ev_at(w) ((WT)(w))->at
473		501
474	#if EV_USE_REALTIME	502	#if EV_USE_REALTIME
475	/* sig_atomic_t is used to avoid per-thread variables or locking but still */	503	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
476	/* giving it a reasonably high chance of working on typical architetcures */	504	/* giving it a reasonably high chance of working on typical architectures */
477	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */	505	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
478	#endif	506	#endif
479		507
480	#if EV_USE_MONOTONIC	508	#if EV_USE_MONOTONIC
481	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	509	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
482	#endif	510	#endif
483		511
		512	#ifndef EV_FD_TO_WIN32_HANDLE
		513	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		514	#endif
		515	#ifndef EV_WIN32_HANDLE_TO_FD
		516	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		517	#endif
		518	#ifndef EV_WIN32_CLOSE_FD
		519	# define EV_WIN32_CLOSE_FD(fd) close (fd)
		520	#endif
		521
484	#ifdef _WIN32	522	#ifdef _WIN32
485	# include "ev_win32.c"	523	# include "ev_win32.c"
486	#endif	524	#endif
487		525
488	/*****************************************************************************/	526	/*****************************************************************************/
		527
		528	static unsigned int noinline
		529	ev_linux_version (void)
		530	{
		531	#ifdef __linux
		532	struct utsname buf;
		533	unsigned int v;
		534	int i;
		535	char *p = buf.release;
		536
		537	if (uname (&buf))
		538	return 0;
		539
		540	for (i = 3+1; --i; )
		541	{
		542	unsigned int c = 0;
		543
		544	for (;;)
		545	{
		546	if (*p >= '0' && *p <= '9')
		547	c = c * 10 + *p++ - '0';
		548	else
		549	{
		550	p += *p == '.';
		551	break;
		552	}
		553	}
		554
		555	v = (v << 8) | c;
		556	}
		557
		558	return v;
		559	#else
		560	return 0;
		561	#endif
		562	}
		563
		564	/*****************************************************************************/
		565
		566	#if EV_AVOID_STDIO
		567	static void noinline
		568	ev_printerr (const char *msg)
		569	{
		570	write (STDERR_FILENO, msg, strlen (msg));
		571	}
		572	#endif
489		573
490	static void (*syserr_cb)(const char *msg);	574	static void (*syserr_cb)(const char *msg);
491		575
492	void	576	void
493	ev_set_syserr_cb (void (*cb)(const char *msg))	577	ev_set_syserr_cb (void (*cb)(const char *msg))
…		…
503		587
504	if (syserr_cb)	588	if (syserr_cb)
505	syserr_cb (msg);	589	syserr_cb (msg);
506	else	590	else
507	{	591	{
		592	#if EV_AVOID_STDIO
		593	const char *err = strerror (errno);
		594
		595	ev_printerr (msg);
		596	ev_printerr (": ");
		597	ev_printerr (err);
		598	ev_printerr ("\n");
		599	#else
508	perror (msg);	600	perror (msg);
		601	#endif
509	abort ();	602	abort ();
510	}	603	}
511	}	604	}
512		605
513	static void *	606	static void *
514	ev_realloc_emul (void *ptr, long size)	607	ev_realloc_emul (void *ptr, long size)
515	{	608	{
		609	#if __GLIBC__
		610	return realloc (ptr, size);
		611	#else
516	/* some systems, notably openbsd and darwin, fail to properly	612	/* some systems, notably openbsd and darwin, fail to properly
517	* implement realloc (x, 0) (as required by both ansi c-98 and	613	* implement realloc (x, 0) (as required by both ansi c-89 and
518	* the single unix specification, so work around them here.	614	* the single unix specification, so work around them here.
519	*/	615	*/
520		616
521	if (size)	617	if (size)
522	return realloc (ptr, size);	618	return realloc (ptr, size);
523		619
524	free (ptr);	620	free (ptr);
525	return 0;	621	return 0;
		622	#endif
526	}	623	}
527		624
528	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	625	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
529		626
530	void	627	void
…		…
538	{	635	{
539	ptr = alloc (ptr, size);	636	ptr = alloc (ptr, size);
540		637
541	if (!ptr && size)	638	if (!ptr && size)
542	{	639	{
		640	#if EV_AVOID_STDIO
		641	ev_printerr ("libev: memory allocation failed, aborting.\n");
		642	#else
543	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	643	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		644	#endif
544	abort ();	645	abort ();
545	}	646	}
546		647
547	return ptr;	648	return ptr;
548	}	649	}
…		…
630		731
631	static int ev_default_loop_ptr;	732	static int ev_default_loop_ptr;
632		733
633	#endif	734	#endif
634		735
635	#if EV_MINIMAL < 2	736	#if EV_FEATURE_API
636	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)	737	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
637	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)	738	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
638	# define EV_INVOKE_PENDING invoke_cb (EV_A)	739	# define EV_INVOKE_PENDING invoke_cb (EV_A)
639	#else	740	#else
640	# define EV_RELEASE_CB (void)0	741	# define EV_RELEASE_CB (void)0
641	# define EV_ACQUIRE_CB (void)0	742	# define EV_ACQUIRE_CB (void)0
642	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)	743	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
643	#endif	744	#endif
644		745
645	#define EVUNLOOP_RECURSE 0x80	746	#define EVBREAK_RECURSE 0x80
646		747
647	/*****************************************************************************/	748	/*****************************************************************************/
648		749
649	#ifndef EV_HAVE_EV_TIME	750	#ifndef EV_HAVE_EV_TIME
650	ev_tstamp	751	ev_tstamp
…		…
694	if (delay > 0.)	795	if (delay > 0.)
695	{	796	{
696	#if EV_USE_NANOSLEEP	797	#if EV_USE_NANOSLEEP
697	struct timespec ts;	798	struct timespec ts;
698		799
699	ts.tv_sec = (time_t)delay;	800	EV_TS_SET (ts, delay);
700	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
701
702	nanosleep (&ts, 0);	801	nanosleep (&ts, 0);
703	#elif defined(_WIN32)	802	#elif defined(_WIN32)
704	Sleep ((unsigned long)(delay * 1e3));	803	Sleep ((unsigned long)(delay * 1e3));
705	#else	804	#else
706	struct timeval tv;	805	struct timeval tv;
707		806
708	tv.tv_sec = (time_t)delay;
709	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
710
711	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */	807	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
712	/* something not guaranteed by newer posix versions, but guaranteed */	808	/* something not guaranteed by newer posix versions, but guaranteed */
713	/* by older ones */	809	/* by older ones */
		810	EV_TV_SET (tv, delay);
714	select (0, 0, 0, 0, &tv);	811	select (0, 0, 0, 0, &tv);
715	#endif	812	#endif
716	}	813	}
717	}	814	}
718		815
719	/*****************************************************************************/	816	/*****************************************************************************/
720		817
721	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	818	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
722		819
723	/* find a suitable new size for the given array, */	820	/* find a suitable new size for the given array, */
724	/* hopefully by rounding to a ncie-to-malloc size */	821	/* hopefully by rounding to a nice-to-malloc size */
725	inline_size int	822	inline_size int
726	array_nextsize (int elem, int cur, int cnt)	823	array_nextsize (int elem, int cur, int cnt)
727	{	824	{
728	int ncur = cur + 1;	825	int ncur = cur + 1;
729		826
…		…
825	}	922	}
826		923
827	/*****************************************************************************/	924	/*****************************************************************************/
828		925
829	inline_speed void	926	inline_speed void
830	fd_event_nc (EV_P_ int fd, int revents)	927	fd_event_nocheck (EV_P_ int fd, int revents)
831	{	928	{
832	ANFD *anfd = anfds + fd;	929	ANFD *anfd = anfds + fd;
833	ev_io *w;	930	ev_io *w;
834		931
835	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	932	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
847	fd_event (EV_P_ int fd, int revents)	944	fd_event (EV_P_ int fd, int revents)
848	{	945	{
849	ANFD *anfd = anfds + fd;	946	ANFD *anfd = anfds + fd;
850		947
851	if (expect_true (!anfd->reify))	948	if (expect_true (!anfd->reify))
852	fd_event_nc (EV_A_ fd, revents);	949	fd_event_nocheck (EV_A_ fd, revents);
853	}	950	}
854		951
855	void	952	void
856	ev_feed_fd_event (EV_P_ int fd, int revents)	953	ev_feed_fd_event (EV_P_ int fd, int revents)
857	{	954	{
858	if (fd >= 0 && fd < anfdmax)	955	if (fd >= 0 && fd < anfdmax)
859	fd_event_nc (EV_A_ fd, revents);	956	fd_event_nocheck (EV_A_ fd, revents);
860	}	957	}
861		958
862	/* make sure the external fd watch events are in-sync */	959	/* make sure the external fd watch events are in-sync */
863	/* with the kernel/libev internal state */	960	/* with the kernel/libev internal state */
864	inline_size void	961	inline_size void
…		…
870	{	967	{
871	int fd = fdchanges [i];	968	int fd = fdchanges [i];
872	ANFD *anfd = anfds + fd;	969	ANFD *anfd = anfds + fd;
873	ev_io *w;	970	ev_io *w;
874		971
875	unsigned char events = 0;	972	unsigned char o_events = anfd->events;
		973	unsigned char o_reify = anfd->reify;
876		974
877	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	975	anfd->reify = 0;
878	events |= (unsigned char)w->events;
879		976
880	#if EV_SELECT_IS_WINSOCKET	977	#if EV_SELECT_IS_WINSOCKET
881	if (events)	978	if (o_reify & EV__IOFDSET)
882	{	979	{
883	unsigned long arg;	980	unsigned long arg;
884	#ifdef EV_FD_TO_WIN32_HANDLE
885	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	981	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
886	#else
887	anfd->handle = _get_osfhandle (fd);
888	#endif
889	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));	982	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
890	}	983	}
891	#endif	984	#endif
892		985
		986	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
893	{	987	{
894	unsigned char o_events = anfd->events;
895	unsigned char o_reify = anfd->reify;
896
897	anfd->reify = 0;
898	anfd->events = events;	988	anfd->events = 0;
899		989
900	if (o_events != events || o_reify & EV__IOFDSET)	990	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		991	anfd->events |= (unsigned char)w->events;
		992
		993	if (o_events != anfd->events)
		994	o_reify = EV__IOFDSET; /* actually |= */
		995	}
		996
		997	if (o_reify & EV__IOFDSET)
901	backend_modify (EV_A_ fd, o_events, events);	998	backend_modify (EV_A_ fd, o_events, anfd->events);
902	}
903	}	999	}
904		1000
905	fdchangecnt = 0;	1001	fdchangecnt = 0;
906	}	1002	}
907		1003
…		…
931	ev_io_stop (EV_A_ w);	1027	ev_io_stop (EV_A_ w);
932	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1028	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
933	}	1029	}
934	}	1030	}
935		1031
936	/* check whether the given fd is atcually valid, for error recovery */	1032	/* check whether the given fd is actually valid, for error recovery */
937	inline_size int	1033	inline_size int
938	fd_valid (int fd)	1034	fd_valid (int fd)
939	{	1035	{
940	#ifdef _WIN32	1036	#ifdef _WIN32
941	return _get_osfhandle (fd) != -1;	1037	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
942	#else	1038	#else
943	return fcntl (fd, F_GETFD) != -1;	1039	return fcntl (fd, F_GETFD) != -1;
944	#endif	1040	#endif
945	}	1041	}
946		1042
…		…
964		1060
965	for (fd = anfdmax; fd--; )	1061	for (fd = anfdmax; fd--; )
966	if (anfds [fd].events)	1062	if (anfds [fd].events)
967	{	1063	{
968	fd_kill (EV_A_ fd);	1064	fd_kill (EV_A_ fd);
969	return;	1065	break;
970	}	1066	}
971	}	1067	}
972		1068
973	/* usually called after fork if backend needs to re-arm all fds from scratch */	1069	/* usually called after fork if backend needs to re-arm all fds from scratch */
974	static void noinline	1070	static void noinline
…		…
983	anfds [fd].emask = 0;	1079	anfds [fd].emask = 0;
984	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);	1080	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
985	}	1081	}
986	}	1082	}
987		1083
		1084	/* used to prepare libev internal fd's */
		1085	/* this is not fork-safe */
		1086	inline_speed void
		1087	fd_intern (int fd)
		1088	{
		1089	#ifdef _WIN32
		1090	unsigned long arg = 1;
		1091	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1092	#else
		1093	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1094	fcntl (fd, F_SETFL, O_NONBLOCK);
		1095	#endif
		1096	}
		1097
988	/*****************************************************************************/	1098	/*****************************************************************************/
989		1099
990	/*	1100	/*
991	* the heap functions want a real array index. array index 0 uis guaranteed to not	1101	* the heap functions want a real array index. array index 0 is guaranteed to not
992	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1102	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
993	* the branching factor of the d-tree.	1103	* the branching factor of the d-tree.
994	*/	1104	*/
995		1105
996	/*	1106	/*
…		…
1064		1174
1065	for (;;)	1175	for (;;)
1066	{	1176	{
1067	int c = k << 1;	1177	int c = k << 1;
1068		1178
1069	if (c > N + HEAP0 - 1)	1179	if (c >= N + HEAP0)
1070	break;	1180	break;
1071		1181
1072	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1182	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
1073	? 1 : 0;	1183	? 1 : 0;
1074		1184
…		…
1110		1220
1111	/* move an element suitably so it is in a correct place */	1221	/* move an element suitably so it is in a correct place */
1112	inline_size void	1222	inline_size void
1113	adjustheap (ANHE *heap, int N, int k)	1223	adjustheap (ANHE *heap, int N, int k)
1114	{	1224	{
1115	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1225	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
1116	upheap (heap, k);	1226	upheap (heap, k);
1117	else	1227	else
1118	downheap (heap, N, k);	1228	downheap (heap, N, k);
1119	}	1229	}
1120		1230
…		…
1133	/*****************************************************************************/	1243	/*****************************************************************************/
1134		1244
1135	/* associate signal watchers to a signal signal */	1245	/* associate signal watchers to a signal signal */
1136	typedef struct	1246	typedef struct
1137	{	1247	{
		1248	EV_ATOMIC_T pending;
		1249	#if EV_MULTIPLICITY
		1250	EV_P;
		1251	#endif
1138	WL head;	1252	WL head;
1139	EV_ATOMIC_T gotsig;
1140	} ANSIG;	1253	} ANSIG;
1141		1254
1142	static ANSIG *signals;	1255	static ANSIG signals [EV_NSIG - 1];
1143	static int signalmax;
1144
1145	static EV_ATOMIC_T gotsig;
1146		1256
1147	/*****************************************************************************/	1257	/*****************************************************************************/
1148		1258
1149	/* used to prepare libev internal fd's */	1259	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1150	/* this is not fork-safe */
1151	inline_speed void
1152	fd_intern (int fd)
1153	{
1154	#ifdef _WIN32
1155	unsigned long arg = 1;
1156	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
1157	#else
1158	fcntl (fd, F_SETFD, FD_CLOEXEC);
1159	fcntl (fd, F_SETFL, O_NONBLOCK);
1160	#endif
1161	}
1162		1260
1163	static void noinline	1261	static void noinline
1164	evpipe_init (EV_P)	1262	evpipe_init (EV_P)
1165	{	1263	{
1166	if (!ev_is_active (&pipe_w))	1264	if (!ev_is_active (&pipe_w))
1167	{	1265	{
1168	#if EV_USE_EVENTFD	1266	# if EV_USE_EVENTFD
1169	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);	1267	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
1170	if (evfd < 0 && errno == EINVAL)	1268	if (evfd < 0 && errno == EINVAL)
1171	evfd = eventfd (0, 0);	1269	evfd = eventfd (0, 0);
1172		1270
1173	if (evfd >= 0)	1271	if (evfd >= 0)
…		…
1175	evpipe [0] = -1;	1273	evpipe [0] = -1;
1176	fd_intern (evfd); /* doing it twice doesn't hurt */	1274	fd_intern (evfd); /* doing it twice doesn't hurt */
1177	ev_io_set (&pipe_w, evfd, EV_READ);	1275	ev_io_set (&pipe_w, evfd, EV_READ);
1178	}	1276	}
1179	else	1277	else
1180	#endif	1278	# endif
1181	{	1279	{
1182	while (pipe (evpipe))	1280	while (pipe (evpipe))
1183	ev_syserr ("(libev) error creating signal/async pipe");	1281	ev_syserr ("(libev) error creating signal/async pipe");
1184		1282
1185	fd_intern (evpipe [0]);	1283	fd_intern (evpipe [0]);
…		…
1196	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1294	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1197	{	1295	{
1198	if (!*flag)	1296	if (!*flag)
1199	{	1297	{
1200	int old_errno = errno; /* save errno because write might clobber it */	1298	int old_errno = errno; /* save errno because write might clobber it */
		1299	char dummy;
1201		1300
1202	*flag = 1;	1301	*flag = 1;
1203		1302
1204	#if EV_USE_EVENTFD	1303	#if EV_USE_EVENTFD
1205	if (evfd >= 0)	1304	if (evfd >= 0)
…		…
1207	uint64_t counter = 1;	1306	uint64_t counter = 1;
1208	write (evfd, &counter, sizeof (uint64_t));	1307	write (evfd, &counter, sizeof (uint64_t));
1209	}	1308	}
1210	else	1309	else
1211	#endif	1310	#endif
		1311	/* win32 people keep sending patches that change this write() to send() */
		1312	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1313	/* so when you think this write should be a send instead, please find out */
		1314	/* where your send() is from - it's definitely not the microsoft send, and */
		1315	/* tell me. thank you. */
1212	write (evpipe [1], &old_errno, 1);	1316	write (evpipe [1], &dummy, 1);
1213		1317
1214	errno = old_errno;	1318	errno = old_errno;
1215	}	1319	}
1216	}	1320	}
1217		1321
1218	/* called whenever the libev signal pipe */	1322	/* called whenever the libev signal pipe */
1219	/* got some events (signal, async) */	1323	/* got some events (signal, async) */
1220	static void	1324	static void
1221	pipecb (EV_P_ ev_io *iow, int revents)	1325	pipecb (EV_P_ ev_io *iow, int revents)
1222	{	1326	{
		1327	int i;
		1328
1223	#if EV_USE_EVENTFD	1329	#if EV_USE_EVENTFD
1224	if (evfd >= 0)	1330	if (evfd >= 0)
1225	{	1331	{
1226	uint64_t counter;	1332	uint64_t counter;
1227	read (evfd, &counter, sizeof (uint64_t));	1333	read (evfd, &counter, sizeof (uint64_t));
1228	}	1334	}
1229	else	1335	else
1230	#endif	1336	#endif
1231	{	1337	{
1232	char dummy;	1338	char dummy;
		1339	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1233	read (evpipe [0], &dummy, 1);	1340	read (evpipe [0], &dummy, 1);
1234	}	1341	}
1235		1342
1236	if (gotsig && ev_is_default_loop (EV_A))	1343	if (sig_pending)
1237	{	1344	{
1238	int signum;	1345	sig_pending = 0;
1239	gotsig = 0;
1240		1346
1241	for (signum = signalmax; signum--; )	1347	for (i = EV_NSIG - 1; i--; )
1242	if (signals [signum].gotsig)	1348	if (expect_false (signals [i].pending))
1243	ev_feed_signal_event (EV_A_ signum + 1);	1349	ev_feed_signal_event (EV_A_ i + 1);
1244	}	1350	}
1245		1351
1246	#if EV_ASYNC_ENABLE	1352	#if EV_ASYNC_ENABLE
1247	if (gotasync)	1353	if (async_pending)
1248	{	1354	{
1249	int i;	1355	async_pending = 0;
1250	gotasync = 0;
1251		1356
1252	for (i = asynccnt; i--; )	1357	for (i = asynccnt; i--; )
1253	if (asyncs [i]->sent)	1358	if (asyncs [i]->sent)
1254	{	1359	{
1255	asyncs [i]->sent = 0;	1360	asyncs [i]->sent = 0;
…		…
1263		1368
1264	static void	1369	static void
1265	ev_sighandler (int signum)	1370	ev_sighandler (int signum)
1266	{	1371	{
1267	#if EV_MULTIPLICITY	1372	#if EV_MULTIPLICITY
1268	struct ev_loop *loop = &default_loop_struct;	1373	EV_P = signals [signum - 1].loop;
1269	#endif	1374	#endif
1270		1375
1271	#if _WIN32	1376	#ifdef _WIN32
1272	signal (signum, ev_sighandler);	1377	signal (signum, ev_sighandler);
1273	#endif	1378	#endif
1274		1379
1275	signals [signum - 1].gotsig = 1;	1380	signals [signum - 1].pending = 1;
1276	evpipe_write (EV_A_ &gotsig);	1381	evpipe_write (EV_A_ &sig_pending);
1277	}	1382	}
1278		1383
1279	void noinline	1384	void noinline
1280	ev_feed_signal_event (EV_P_ int signum)	1385	ev_feed_signal_event (EV_P_ int signum)
1281	{	1386	{
1282	WL w;	1387	WL w;
1283		1388
		1389	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1390	return;
		1391
		1392	--signum;
		1393
1284	#if EV_MULTIPLICITY	1394	#if EV_MULTIPLICITY
1285	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1395	/* it is permissible to try to feed a signal to the wrong loop */
1286	#endif	1396	/* or, likely more useful, feeding a signal nobody is waiting for */
1287		1397
1288	--signum;	1398	if (expect_false (signals [signum].loop != EV_A))
1289
1290	if (signum < 0 || signum >= signalmax)
1291	return;	1399	return;
		1400	#endif
1292		1401
1293	signals [signum].gotsig = 0;	1402	signals [signum].pending = 0;
1294		1403
1295	for (w = signals [signum].head; w; w = w->next)	1404	for (w = signals [signum].head; w; w = w->next)
1296	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1405	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1297	}	1406	}
1298		1407
1299	#if EV_USE_SIGNALFD	1408	#if EV_USE_SIGNALFD
1300	static void	1409	static void
1301	sigfdcb (EV_P_ ev_io *iow, int revents)	1410	sigfdcb (EV_P_ ev_io *iow, int revents)
1302	{	1411	{
1303	struct signalfd_siginfo si[4], *sip;	1412	struct signalfd_siginfo si[2], *sip; /* these structs are big */
1304		1413
1305	for (;;)	1414	for (;;)
1306	{	1415	{
1307	ssize_t res = read (sigfd, si, sizeof (si));	1416	ssize_t res = read (sigfd, si, sizeof (si));
1308		1417
…		…
1314	break;	1423	break;
1315	}	1424	}
1316	}	1425	}
1317	#endif	1426	#endif
1318		1427
		1428	#endif
		1429
1319	/*****************************************************************************/	1430	/*****************************************************************************/
1320		1431
		1432	#if EV_CHILD_ENABLE
1321	static WL childs [EV_PID_HASHSIZE];	1433	static WL childs [EV_PID_HASHSIZE];
1322
1323	#ifndef _WIN32
1324		1434
1325	static ev_signal childev;	1435	static ev_signal childev;
1326		1436
1327	#ifndef WIFCONTINUED	1437	#ifndef WIFCONTINUED
1328	# define WIFCONTINUED(status) 0	1438	# define WIFCONTINUED(status) 0
…		…
1333	child_reap (EV_P_ int chain, int pid, int status)	1443	child_reap (EV_P_ int chain, int pid, int status)
1334	{	1444	{
1335	ev_child *w;	1445	ev_child *w;
1336	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1446	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1337		1447
1338	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1448	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1339	{	1449	{
1340	if ((w->pid == pid || !w->pid)	1450	if ((w->pid == pid || !w->pid)
1341	&& (!traced || (w->flags & 1)))	1451	&& (!traced || (w->flags & 1)))
1342	{	1452	{
1343	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1453	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
1368	/* make sure we are called again until all children have been reaped */	1478	/* make sure we are called again until all children have been reaped */
1369	/* we need to do it this way so that the callback gets called before we continue */	1479	/* we need to do it this way so that the callback gets called before we continue */
1370	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1480	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1371		1481
1372	child_reap (EV_A_ pid, pid, status);	1482	child_reap (EV_A_ pid, pid, status);
1373	if (EV_PID_HASHSIZE > 1)	1483	if ((EV_PID_HASHSIZE) > 1)
1374	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1484	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1375	}	1485	}
1376		1486
1377	#endif	1487	#endif
1378		1488
…		…
1445	#ifdef __APPLE__	1555	#ifdef __APPLE__
1446	/* only select works correctly on that "unix-certified" platform */	1556	/* only select works correctly on that "unix-certified" platform */
1447	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */	1557	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
1448	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */	1558	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
1449	#endif	1559	#endif
		1560	#ifdef __FreeBSD__
		1561	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
		1562	#endif
1450		1563
1451	return flags;	1564	return flags;
1452	}	1565	}
1453		1566
1454	unsigned int	1567	unsigned int
1455	ev_embeddable_backends (void)	1568	ev_embeddable_backends (void)
1456	{	1569	{
1457	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1570	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1458		1571
1459	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1572	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1460	/* please fix it and tell me how to detect the fix */	1573	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1461	flags &= ~EVBACKEND_EPOLL;	1574	flags &= ~EVBACKEND_EPOLL;
1462		1575
1463	return flags;	1576	return flags;
1464	}	1577	}
1465		1578
1466	unsigned int	1579	unsigned int
1467	ev_backend (EV_P)	1580	ev_backend (EV_P)
1468	{	1581	{
1469	return backend;	1582	return backend;
1470	}	1583	}
1471		1584
1472	#if EV_MINIMAL < 2	1585	#if EV_FEATURE_API
1473	unsigned int	1586	unsigned int
1474	ev_loop_count (EV_P)	1587	ev_iteration (EV_P)
1475	{	1588	{
1476	return loop_count;	1589	return loop_count;
1477	}	1590	}
1478		1591
1479	unsigned int	1592	unsigned int
1480	ev_loop_depth (EV_P)	1593	ev_depth (EV_P)
1481	{	1594	{
1482	return loop_depth;	1595	return loop_depth;
1483	}	1596	}
1484		1597
1485	void	1598	void
…		…
1542	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1655	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1543	have_monotonic = 1;	1656	have_monotonic = 1;
1544	}	1657	}
1545	#endif	1658	#endif
1546		1659
		1660	/* pid check not overridable via env */
		1661	#ifndef _WIN32
		1662	if (flags & EVFLAG_FORKCHECK)
		1663	curpid = getpid ();
		1664	#endif
		1665
		1666	if (!(flags & EVFLAG_NOENV)
		1667	&& !enable_secure ()
		1668	&& getenv ("LIBEV_FLAGS"))
		1669	flags = atoi (getenv ("LIBEV_FLAGS"));
		1670
1547	ev_rt_now = ev_time ();	1671	ev_rt_now = ev_time ();
1548	mn_now = get_clock ();	1672	mn_now = get_clock ();
1549	now_floor = mn_now;	1673	now_floor = mn_now;
1550	rtmn_diff = ev_rt_now - mn_now;	1674	rtmn_diff = ev_rt_now - mn_now;
1551	#if EV_MINIMAL < 2	1675	#if EV_FEATURE_API
1552	invoke_cb = ev_invoke_pending;	1676	invoke_cb = ev_invoke_pending;
1553	#endif	1677	#endif
1554		1678
1555	io_blocktime = 0.;	1679	io_blocktime = 0.;
1556	timeout_blocktime = 0.;	1680	timeout_blocktime = 0.;
1557	backend = 0;	1681	backend = 0;
1558	backend_fd = -1;	1682	backend_fd = -1;
1559	gotasync = 0;	1683	sig_pending = 0;
		1684	#if EV_ASYNC_ENABLE
		1685	async_pending = 0;
		1686	#endif
1560	#if EV_USE_INOTIFY	1687	#if EV_USE_INOTIFY
1561	fs_fd = -2;	1688	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
1562	#endif	1689	#endif
1563	#if EV_USE_SIGNALFD	1690	#if EV_USE_SIGNALFD
1564	sigfd = -2;	1691	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
1565	#endif	1692	#endif
1566
1567	/* pid check not overridable via env */
1568	#ifndef _WIN32
1569	if (flags & EVFLAG_FORKCHECK)
1570	curpid = getpid ();
1571	#endif
1572
1573	if (!(flags & EVFLAG_NOENV)
1574	&& !enable_secure ()
1575	&& getenv ("LIBEV_FLAGS"))
1576	flags = atoi (getenv ("LIBEV_FLAGS"));
1577		1693
1578	if (!(flags & 0x0000ffffU))	1694	if (!(flags & 0x0000ffffU))
1579	flags |= ev_recommended_backends ();	1695	flags |= ev_recommended_backends ();
1580		1696
1581	#if EV_USE_PORT	1697	#if EV_USE_PORT
…		…
1594	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1710	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1595	#endif	1711	#endif
1596		1712
1597	ev_prepare_init (&pending_w, pendingcb);	1713	ev_prepare_init (&pending_w, pendingcb);
1598		1714
		1715	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1599	ev_init (&pipe_w, pipecb);	1716	ev_init (&pipe_w, pipecb);
1600	ev_set_priority (&pipe_w, EV_MAXPRI);	1717	ev_set_priority (&pipe_w, EV_MAXPRI);
		1718	#endif
1601	}	1719	}
1602	}	1720	}
1603		1721
1604	/* free up a loop structure */	1722	/* free up a loop structure */
1605	static void noinline	1723	static void noinline
…		…
1617	close (evfd);	1735	close (evfd);
1618	#endif	1736	#endif
1619		1737
1620	if (evpipe [0] >= 0)	1738	if (evpipe [0] >= 0)
1621	{	1739	{
1622	close (evpipe [0]);	1740	EV_WIN32_CLOSE_FD (evpipe [0]);
1623	close (evpipe [1]);	1741	EV_WIN32_CLOSE_FD (evpipe [1]);
1624	}	1742	}
1625	}	1743	}
1626		1744
1627	#if EV_USE_SIGNALFD	1745	#if EV_USE_SIGNALFD
1628	if (ev_is_active (&sigfd_w))	1746	if (ev_is_active (&sigfd_w))
1629	{
1630	/*ev_ref (EV_A);*/
1631	/*ev_io_stop (EV_A_ &sigfd_w);*/
1632
1633	close (sigfd);	1747	close (sigfd);
1634	}
1635	#endif	1748	#endif
1636		1749
1637	#if EV_USE_INOTIFY	1750	#if EV_USE_INOTIFY
1638	if (fs_fd >= 0)	1751	if (fs_fd >= 0)
1639	close (fs_fd);	1752	close (fs_fd);
…		…
1709		1822
1710	if (ev_is_active (&pipe_w))	1823	if (ev_is_active (&pipe_w))
1711	{	1824	{
1712	/* this "locks" the handlers against writing to the pipe */	1825	/* this "locks" the handlers against writing to the pipe */
1713	/* while we modify the fd vars */	1826	/* while we modify the fd vars */
1714	gotsig = 1;	1827	sig_pending = 1;
1715	#if EV_ASYNC_ENABLE	1828	#if EV_ASYNC_ENABLE
1716	gotasync = 1;	1829	async_pending = 1;
1717	#endif	1830	#endif
1718		1831
1719	ev_ref (EV_A);	1832	ev_ref (EV_A);
1720	ev_io_stop (EV_A_ &pipe_w);	1833	ev_io_stop (EV_A_ &pipe_w);
1721		1834
…		…
1724	close (evfd);	1837	close (evfd);
1725	#endif	1838	#endif
1726		1839
1727	if (evpipe [0] >= 0)	1840	if (evpipe [0] >= 0)
1728	{	1841	{
1729	close (evpipe [0]);	1842	EV_WIN32_CLOSE_FD (evpipe [0]);
1730	close (evpipe [1]);	1843	EV_WIN32_CLOSE_FD (evpipe [1]);
1731	}	1844	}
1732		1845
		1846	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1733	evpipe_init (EV_A);	1847	evpipe_init (EV_A);
1734	/* now iterate over everything, in case we missed something */	1848	/* now iterate over everything, in case we missed something */
1735	pipecb (EV_A_ &pipe_w, EV_READ);	1849	pipecb (EV_A_ &pipe_w, EV_READ);
		1850	#endif
1736	}	1851	}
1737		1852
1738	postfork = 0;	1853	postfork = 0;
1739	}	1854	}
1740		1855
1741	#if EV_MULTIPLICITY	1856	#if EV_MULTIPLICITY
1742		1857
1743	struct ev_loop *	1858	struct ev_loop *
1744	ev_loop_new (unsigned int flags)	1859	ev_loop_new (unsigned int flags)
1745	{	1860	{
1746	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	1861	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1747		1862
1748	memset (loop, 0, sizeof (struct ev_loop));	1863	memset (EV_A, 0, sizeof (struct ev_loop));
1749	loop_init (EV_A_ flags);	1864	loop_init (EV_A_ flags);
1750		1865
1751	if (ev_backend (EV_A))	1866	if (ev_backend (EV_A))
1752	return loop;	1867	return EV_A;
1753		1868
1754	return 0;	1869	return 0;
1755	}	1870	}
1756		1871
1757	void	1872	void
…		…
1802	verify_watcher (EV_A_ ws [cnt]);	1917	verify_watcher (EV_A_ ws [cnt]);
1803	}	1918	}
1804	}	1919	}
1805	#endif	1920	#endif
1806		1921
1807	#if EV_MINIMAL < 2	1922	#if EV_FEATURE_API
1808	void	1923	void
1809	ev_loop_verify (EV_P)	1924	ev_verify (EV_P)
1810	{	1925	{
1811	#if EV_VERIFY	1926	#if EV_VERIFY
1812	int i;	1927	int i;
1813	WL w;	1928	WL w;
1814		1929
…		…
1853	#if EV_ASYNC_ENABLE	1968	#if EV_ASYNC_ENABLE
1854	assert (asyncmax >= asynccnt);	1969	assert (asyncmax >= asynccnt);
1855	array_verify (EV_A_ (W *)asyncs, asynccnt);	1970	array_verify (EV_A_ (W *)asyncs, asynccnt);
1856	#endif	1971	#endif
1857		1972
		1973	#if EV_PREPARE_ENABLE
1858	assert (preparemax >= preparecnt);	1974	assert (preparemax >= preparecnt);
1859	array_verify (EV_A_ (W *)prepares, preparecnt);	1975	array_verify (EV_A_ (W *)prepares, preparecnt);
		1976	#endif
1860		1977
		1978	#if EV_CHECK_ENABLE
1861	assert (checkmax >= checkcnt);	1979	assert (checkmax >= checkcnt);
1862	array_verify (EV_A_ (W *)checks, checkcnt);	1980	array_verify (EV_A_ (W *)checks, checkcnt);
		1981	#endif
1863		1982
1864	# if 0	1983	# if 0
		1984	#if EV_CHILD_ENABLE
1865	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1985	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1866	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)	1986	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		1987	#endif
1867	# endif	1988	# endif
1868	#endif	1989	#endif
1869	}	1990	}
1870	#endif	1991	#endif
1871		1992
…		…
1878	#endif	1999	#endif
1879	{	2000	{
1880	if (!ev_default_loop_ptr)	2001	if (!ev_default_loop_ptr)
1881	{	2002	{
1882	#if EV_MULTIPLICITY	2003	#if EV_MULTIPLICITY
1883	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2004	EV_P = ev_default_loop_ptr = &default_loop_struct;
1884	#else	2005	#else
1885	ev_default_loop_ptr = 1;	2006	ev_default_loop_ptr = 1;
1886	#endif	2007	#endif
1887		2008
1888	loop_init (EV_A_ flags);	2009	loop_init (EV_A_ flags);
1889		2010
1890	if (ev_backend (EV_A))	2011	if (ev_backend (EV_A))
1891	{	2012	{
1892	#ifndef _WIN32	2013	#if EV_CHILD_ENABLE
1893	ev_signal_init (&childev, childcb, SIGCHLD);	2014	ev_signal_init (&childev, childcb, SIGCHLD);
1894	ev_set_priority (&childev, EV_MAXPRI);	2015	ev_set_priority (&childev, EV_MAXPRI);
1895	ev_signal_start (EV_A_ &childev);	2016	ev_signal_start (EV_A_ &childev);
1896	ev_unref (EV_A); /* child watcher should not keep loop alive */	2017	ev_unref (EV_A); /* child watcher should not keep loop alive */
1897	#endif	2018	#endif
…		…
1905		2026
1906	void	2027	void
1907	ev_default_destroy (void)	2028	ev_default_destroy (void)
1908	{	2029	{
1909	#if EV_MULTIPLICITY	2030	#if EV_MULTIPLICITY
1910	struct ev_loop *loop = ev_default_loop_ptr;	2031	EV_P = ev_default_loop_ptr;
1911	#endif	2032	#endif
1912		2033
1913	ev_default_loop_ptr = 0;	2034	ev_default_loop_ptr = 0;
1914		2035
1915	#ifndef _WIN32	2036	#if EV_CHILD_ENABLE
1916	ev_ref (EV_A); /* child watcher */	2037	ev_ref (EV_A); /* child watcher */
1917	ev_signal_stop (EV_A_ &childev);	2038	ev_signal_stop (EV_A_ &childev);
1918	#endif	2039	#endif
1919		2040
1920	loop_destroy (EV_A);	2041	loop_destroy (EV_A);
…		…
1922		2043
1923	void	2044	void
1924	ev_default_fork (void)	2045	ev_default_fork (void)
1925	{	2046	{
1926	#if EV_MULTIPLICITY	2047	#if EV_MULTIPLICITY
1927	struct ev_loop *loop = ev_default_loop_ptr;	2048	EV_P = ev_default_loop_ptr;
1928	#endif	2049	#endif
1929		2050
1930	postfork = 1; /* must be in line with ev_loop_fork */	2051	postfork = 1; /* must be in line with ev_loop_fork */
1931	}	2052	}
1932		2053
…		…
2026	EV_FREQUENT_CHECK;	2147	EV_FREQUENT_CHECK;
2027	feed_reverse (EV_A_ (W)w);	2148	feed_reverse (EV_A_ (W)w);
2028	}	2149	}
2029	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);	2150	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
2030		2151
2031	feed_reverse_done (EV_A_ EV_TIMEOUT);	2152	feed_reverse_done (EV_A_ EV_TIMER);
2032	}	2153	}
2033	}	2154	}
2034		2155
2035	#if EV_PERIODIC_ENABLE	2156	#if EV_PERIODIC_ENABLE
2036	/* make periodics pending */	2157	/* make periodics pending */
…		…
2089	feed_reverse_done (EV_A_ EV_PERIODIC);	2210	feed_reverse_done (EV_A_ EV_PERIODIC);
2090	}	2211	}
2091	}	2212	}
2092		2213
2093	/* simply recalculate all periodics */	2214	/* simply recalculate all periodics */
2094	/* TODO: maybe ensure that at leats one event happens when jumping forward? */	2215	/* TODO: maybe ensure that at least one event happens when jumping forward? */
2095	static void noinline	2216	static void noinline
2096	periodics_reschedule (EV_P)	2217	periodics_reschedule (EV_P)
2097	{	2218	{
2098	int i;	2219	int i;
2099		2220
…		…
2127	ANHE_at_cache (*he);	2248	ANHE_at_cache (*he);
2128	}	2249	}
2129	}	2250	}
2130		2251
2131	/* fetch new monotonic and realtime times from the kernel */	2252	/* fetch new monotonic and realtime times from the kernel */
2132	/* also detetc if there was a timejump, and act accordingly */	2253	/* also detect if there was a timejump, and act accordingly */
2133	inline_speed void	2254	inline_speed void
2134	time_update (EV_P_ ev_tstamp max_block)	2255	time_update (EV_P_ ev_tstamp max_block)
2135	{	2256	{
2136	#if EV_USE_MONOTONIC	2257	#if EV_USE_MONOTONIC
2137	if (expect_true (have_monotonic))	2258	if (expect_true (have_monotonic))
…		…
2195	mn_now = ev_rt_now;	2316	mn_now = ev_rt_now;
2196	}	2317	}
2197	}	2318	}
2198		2319
2199	void	2320	void
2200	ev_loop (EV_P_ int flags)	2321	ev_run (EV_P_ int flags)
2201	{	2322	{
2202	#if EV_MINIMAL < 2	2323	#if EV_FEATURE_API
2203	++loop_depth;	2324	++loop_depth;
2204	#endif	2325	#endif
2205		2326
2206	assert (("libev: ev_loop recursion during release detected", loop_done != EVUNLOOP_RECURSE));	2327	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
2207		2328
2208	loop_done = EVUNLOOP_CANCEL;	2329	loop_done = EVBREAK_CANCEL;
2209		2330
2210	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */	2331	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
2211		2332
2212	do	2333	do
2213	{	2334	{
2214	#if EV_VERIFY >= 2	2335	#if EV_VERIFY >= 2
2215	ev_loop_verify (EV_A);	2336	ev_verify (EV_A);
2216	#endif	2337	#endif
2217		2338
2218	#ifndef _WIN32	2339	#ifndef _WIN32
2219	if (expect_false (curpid)) /* penalise the forking check even more */	2340	if (expect_false (curpid)) /* penalise the forking check even more */
2220	if (expect_false (getpid () != curpid))	2341	if (expect_false (getpid () != curpid))
…		…
2232	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2353	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
2233	EV_INVOKE_PENDING;	2354	EV_INVOKE_PENDING;
2234	}	2355	}
2235	#endif	2356	#endif
2236		2357
		2358	#if EV_PREPARE_ENABLE
2237	/* queue prepare watchers (and execute them) */	2359	/* queue prepare watchers (and execute them) */
2238	if (expect_false (preparecnt))	2360	if (expect_false (preparecnt))
2239	{	2361	{
2240	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2362	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
2241	EV_INVOKE_PENDING;	2363	EV_INVOKE_PENDING;
2242	}	2364	}
		2365	#endif
2243		2366
2244	if (expect_false (loop_done))	2367	if (expect_false (loop_done))
2245	break;	2368	break;
2246		2369
2247	/* we might have forked, so reify kernel state if necessary */	2370	/* we might have forked, so reify kernel state if necessary */
…		…
2254	/* calculate blocking time */	2377	/* calculate blocking time */
2255	{	2378	{
2256	ev_tstamp waittime = 0.;	2379	ev_tstamp waittime = 0.;
2257	ev_tstamp sleeptime = 0.;	2380	ev_tstamp sleeptime = 0.;
2258		2381
		2382	/* remember old timestamp for io_blocktime calculation */
		2383	ev_tstamp prev_mn_now = mn_now;
		2384
		2385	/* update time to cancel out callback processing overhead */
		2386	time_update (EV_A_ 1e100);
		2387
2259	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2388	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt)))
2260	{	2389	{
2261	/* remember old timestamp for io_blocktime calculation */
2262	ev_tstamp prev_mn_now = mn_now;
2263
2264	/* update time to cancel out callback processing overhead */
2265	time_update (EV_A_ 1e100);
2266
2267	waittime = MAX_BLOCKTIME;	2390	waittime = MAX_BLOCKTIME;
2268		2391
2269	if (timercnt)	2392	if (timercnt)
2270	{	2393	{
2271	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2394	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
…		…
2298	waittime -= sleeptime;	2421	waittime -= sleeptime;
2299	}	2422	}
2300	}	2423	}
2301	}	2424	}
2302		2425
2303	#if EV_MINIMAL < 2	2426	#if EV_FEATURE_API
2304	++loop_count;	2427	++loop_count;
2305	#endif	2428	#endif
2306	assert ((loop_done = EVUNLOOP_RECURSE, 1)); /* assert for side effect */	2429	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
2307	backend_poll (EV_A_ waittime);	2430	backend_poll (EV_A_ waittime);
2308	assert ((loop_done = EVUNLOOP_CANCEL, 1)); /* assert for side effect */	2431	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
2309		2432
2310	/* update ev_rt_now, do magic */	2433	/* update ev_rt_now, do magic */
2311	time_update (EV_A_ waittime + sleeptime);	2434	time_update (EV_A_ waittime + sleeptime);
2312	}	2435	}
2313		2436
…		…
2320	#if EV_IDLE_ENABLE	2443	#if EV_IDLE_ENABLE
2321	/* queue idle watchers unless other events are pending */	2444	/* queue idle watchers unless other events are pending */
2322	idle_reify (EV_A);	2445	idle_reify (EV_A);
2323	#endif	2446	#endif
2324		2447
		2448	#if EV_CHECK_ENABLE
2325	/* queue check watchers, to be executed first */	2449	/* queue check watchers, to be executed first */
2326	if (expect_false (checkcnt))	2450	if (expect_false (checkcnt))
2327	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2451	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2452	#endif
2328		2453
2329	EV_INVOKE_PENDING;	2454	EV_INVOKE_PENDING;
2330	}	2455	}
2331	while (expect_true (	2456	while (expect_true (
2332	activecnt	2457	activecnt
2333	&& !loop_done	2458	&& !loop_done
2334	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2459	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
2335	));	2460	));
2336		2461
2337	if (loop_done == EVUNLOOP_ONE)	2462	if (loop_done == EVBREAK_ONE)
2338	loop_done = EVUNLOOP_CANCEL;	2463	loop_done = EVBREAK_CANCEL;
2339		2464
2340	#if EV_MINIMAL < 2	2465	#if EV_FEATURE_API
2341	--loop_depth;	2466	--loop_depth;
2342	#endif	2467	#endif
2343	}	2468	}
2344		2469
2345	void	2470	void
2346	ev_unloop (EV_P_ int how)	2471	ev_break (EV_P_ int how)
2347	{	2472	{
2348	loop_done = how;	2473	loop_done = how;
2349	}	2474	}
2350		2475
2351	void	2476	void
…		…
2398	inline_size void	2523	inline_size void
2399	wlist_del (WL *head, WL elem)	2524	wlist_del (WL *head, WL elem)
2400	{	2525	{
2401	while (*head)	2526	while (*head)
2402	{	2527	{
2403	if (*head == elem)	2528	if (expect_true (*head == elem))
2404	{	2529	{
2405	*head = elem->next;	2530	*head = elem->next;
2406	return;	2531	break;
2407	}	2532	}
2408		2533
2409	head = &(*head)->next;	2534	head = &(*head)->next;
2410	}	2535	}
2411	}	2536	}
…		…
2471		2596
2472	if (expect_false (ev_is_active (w)))	2597	if (expect_false (ev_is_active (w)))
2473	return;	2598	return;
2474		2599
2475	assert (("libev: ev_io_start called with negative fd", fd >= 0));	2600	assert (("libev: ev_io_start called with negative fd", fd >= 0));
2476	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));	2601	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2477		2602
2478	EV_FREQUENT_CHECK;	2603	EV_FREQUENT_CHECK;
2479		2604
2480	ev_start (EV_A_ (W)w, 1);	2605	ev_start (EV_A_ (W)w, 1);
2481	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);	2606	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
…		…
2499	EV_FREQUENT_CHECK;	2624	EV_FREQUENT_CHECK;
2500		2625
2501	wlist_del (&anfds[w->fd].head, (WL)w);	2626	wlist_del (&anfds[w->fd].head, (WL)w);
2502	ev_stop (EV_A_ (W)w);	2627	ev_stop (EV_A_ (W)w);
2503		2628
2504	fd_change (EV_A_ w->fd, 1);	2629	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2505		2630
2506	EV_FREQUENT_CHECK;	2631	EV_FREQUENT_CHECK;
2507	}	2632	}
2508		2633
2509	void noinline	2634	void noinline
…		…
2551	timers [active] = timers [timercnt + HEAP0];	2676	timers [active] = timers [timercnt + HEAP0];
2552	adjustheap (timers, timercnt, active);	2677	adjustheap (timers, timercnt, active);
2553	}	2678	}
2554	}	2679	}
2555		2680
2556	EV_FREQUENT_CHECK;
2557
2558	ev_at (w) -= mn_now;	2681	ev_at (w) -= mn_now;
2559		2682
2560	ev_stop (EV_A_ (W)w);	2683	ev_stop (EV_A_ (W)w);
		2684
		2685	EV_FREQUENT_CHECK;
2561	}	2686	}
2562		2687
2563	void noinline	2688	void noinline
2564	ev_timer_again (EV_P_ ev_timer *w)	2689	ev_timer_again (EV_P_ ev_timer *w)
2565	{	2690	{
…		…
2644	periodics [active] = periodics [periodiccnt + HEAP0];	2769	periodics [active] = periodics [periodiccnt + HEAP0];
2645	adjustheap (periodics, periodiccnt, active);	2770	adjustheap (periodics, periodiccnt, active);
2646	}	2771	}
2647	}	2772	}
2648		2773
2649	EV_FREQUENT_CHECK;
2650
2651	ev_stop (EV_A_ (W)w);	2774	ev_stop (EV_A_ (W)w);
		2775
		2776	EV_FREQUENT_CHECK;
2652	}	2777	}
2653		2778
2654	void noinline	2779	void noinline
2655	ev_periodic_again (EV_P_ ev_periodic *w)	2780	ev_periodic_again (EV_P_ ev_periodic *w)
2656	{	2781	{
…		…
2662		2787
2663	#ifndef SA_RESTART	2788	#ifndef SA_RESTART
2664	# define SA_RESTART 0	2789	# define SA_RESTART 0
2665	#endif	2790	#endif
2666		2791
		2792	#if EV_SIGNAL_ENABLE
		2793
2667	void noinline	2794	void noinline
2668	ev_signal_start (EV_P_ ev_signal *w)	2795	ev_signal_start (EV_P_ ev_signal *w)
2669	{	2796	{
2670	#if EV_MULTIPLICITY
2671	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2672	#endif
2673	if (expect_false (ev_is_active (w)))	2797	if (expect_false (ev_is_active (w)))
2674	return;	2798	return;
2675		2799
2676	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));	2800	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		2801
		2802	#if EV_MULTIPLICITY
		2803	assert (("libev: a signal must not be attached to two different loops",
		2804	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
		2805
		2806	signals [w->signum - 1].loop = EV_A;
		2807	#endif
2677		2808
2678	EV_FREQUENT_CHECK;	2809	EV_FREQUENT_CHECK;
2679		2810
2680	#if EV_USE_SIGNALFD	2811	#if EV_USE_SIGNALFD
2681	if (sigfd == -2)	2812	if (sigfd == -2)
…		…
2703	sigaddset (&sigfd_set, w->signum);	2834	sigaddset (&sigfd_set, w->signum);
2704	sigprocmask (SIG_BLOCK, &sigfd_set, 0);	2835	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
2705		2836
2706	signalfd (sigfd, &sigfd_set, 0);	2837	signalfd (sigfd, &sigfd_set, 0);
2707	}	2838	}
2708	else
2709	#endif
2710	evpipe_init (EV_A);
2711
2712	{
2713	#ifndef _WIN32
2714	sigset_t full, prev;
2715	sigfillset (&full);
2716	sigprocmask (SIG_SETMASK, &full, &prev);
2717	#endif
2718
2719	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
2720
2721	#ifndef _WIN32
2722	# if EV_USE_SIGNALFD
2723	if (sigfd < 0)/*TODO*/
2724	# endif	2839	#endif
2725	sigdelset (&prev, w->signum);
2726	sigprocmask (SIG_SETMASK, &prev, 0);
2727	#endif
2728	}
2729		2840
2730	ev_start (EV_A_ (W)w, 1);	2841	ev_start (EV_A_ (W)w, 1);
2731	wlist_add (&signals [w->signum - 1].head, (WL)w);	2842	wlist_add (&signals [w->signum - 1].head, (WL)w);
2732		2843
2733	if (!((WL)w)->next)	2844	if (!((WL)w)->next)
2734	{
2735	#if _WIN32
2736	signal (w->signum, ev_sighandler);
2737	#else
2738	# if EV_USE_SIGNALFD	2845	# if EV_USE_SIGNALFD
2739	if (sigfd < 0) /*TODO*/	2846	if (sigfd < 0) /*TODO*/
2740	# endif	2847	# endif
2741	{	2848	{
		2849	# ifdef _WIN32
		2850	evpipe_init (EV_A);
		2851
		2852	signal (w->signum, ev_sighandler);
		2853	# else
2742	struct sigaction sa = { };	2854	struct sigaction sa;
		2855
		2856	evpipe_init (EV_A);
		2857
2743	sa.sa_handler = ev_sighandler;	2858	sa.sa_handler = ev_sighandler;
2744	sigfillset (&sa.sa_mask);	2859	sigfillset (&sa.sa_mask);
2745	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2860	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2746	sigaction (w->signum, &sa, 0);	2861	sigaction (w->signum, &sa, 0);
		2862
		2863	sigemptyset (&sa.sa_mask);
		2864	sigaddset (&sa.sa_mask, w->signum);
		2865	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		2866	#endif
2747	}	2867	}
2748	#endif
2749	}
2750		2868
2751	EV_FREQUENT_CHECK;	2869	EV_FREQUENT_CHECK;
2752	}	2870	}
2753		2871
2754	void noinline	2872	void noinline
…		…
2762		2880
2763	wlist_del (&signals [w->signum - 1].head, (WL)w);	2881	wlist_del (&signals [w->signum - 1].head, (WL)w);
2764	ev_stop (EV_A_ (W)w);	2882	ev_stop (EV_A_ (W)w);
2765		2883
2766	if (!signals [w->signum - 1].head)	2884	if (!signals [w->signum - 1].head)
		2885	{
		2886	#if EV_MULTIPLICITY
		2887	signals [w->signum - 1].loop = 0; /* unattach from signal */
		2888	#endif
2767	#if EV_USE_SIGNALFD	2889	#if EV_USE_SIGNALFD
2768	if (sigfd >= 0)	2890	if (sigfd >= 0)
2769	{	2891	{
2770	sigprocmask (SIG_UNBLOCK, &sigfd_set, 0);//D	2892	sigset_t ss;
		2893
		2894	sigemptyset (&ss);
		2895	sigaddset (&ss, w->signum);
2771	sigdelset (&sigfd_set, w->signum);	2896	sigdelset (&sigfd_set, w->signum);
		2897
2772	signalfd (sigfd, &sigfd_set, 0);	2898	signalfd (sigfd, &sigfd_set, 0);
2773	sigprocmask (SIG_BLOCK, &sigfd_set, 0);//D	2899	sigprocmask (SIG_UNBLOCK, &ss, 0);
2774	/*TODO: maybe unblock signal? */
2775	}	2900	}
2776	else	2901	else
2777	#endif	2902	#endif
2778	signal (w->signum, SIG_DFL);	2903	signal (w->signum, SIG_DFL);
		2904	}
2779		2905
2780	EV_FREQUENT_CHECK;	2906	EV_FREQUENT_CHECK;
2781	}	2907	}
		2908
		2909	#endif
		2910
		2911	#if EV_CHILD_ENABLE
2782		2912
2783	void	2913	void
2784	ev_child_start (EV_P_ ev_child *w)	2914	ev_child_start (EV_P_ ev_child *w)
2785	{	2915	{
2786	#if EV_MULTIPLICITY	2916	#if EV_MULTIPLICITY
…		…
2790	return;	2920	return;
2791		2921
2792	EV_FREQUENT_CHECK;	2922	EV_FREQUENT_CHECK;
2793		2923
2794	ev_start (EV_A_ (W)w, 1);	2924	ev_start (EV_A_ (W)w, 1);
2795	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2925	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2796		2926
2797	EV_FREQUENT_CHECK;	2927	EV_FREQUENT_CHECK;
2798	}	2928	}
2799		2929
2800	void	2930	void
…		…
2804	if (expect_false (!ev_is_active (w)))	2934	if (expect_false (!ev_is_active (w)))
2805	return;	2935	return;
2806		2936
2807	EV_FREQUENT_CHECK;	2937	EV_FREQUENT_CHECK;
2808		2938
2809	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	2939	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2810	ev_stop (EV_A_ (W)w);	2940	ev_stop (EV_A_ (W)w);
2811		2941
2812	EV_FREQUENT_CHECK;	2942	EV_FREQUENT_CHECK;
2813	}	2943	}
		2944
		2945	#endif
2814		2946
2815	#if EV_STAT_ENABLE	2947	#if EV_STAT_ENABLE
2816		2948
2817	# ifdef _WIN32	2949	# ifdef _WIN32
2818	# undef lstat	2950	# undef lstat
…		…
2824	#define MIN_STAT_INTERVAL 0.1074891	2956	#define MIN_STAT_INTERVAL 0.1074891
2825		2957
2826	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	2958	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2827		2959
2828	#if EV_USE_INOTIFY	2960	#if EV_USE_INOTIFY
2829	# define EV_INOTIFY_BUFSIZE 8192	2961
		2962	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		2963	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2830		2964
2831	static void noinline	2965	static void noinline
2832	infy_add (EV_P_ ev_stat *w)	2966	infy_add (EV_P_ ev_stat *w)
2833	{	2967	{
2834	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);	2968	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);
2835		2969
2836	if (w->wd < 0)	2970	if (w->wd >= 0)
		2971	{
		2972	struct statfs sfs;
		2973
		2974	/* now local changes will be tracked by inotify, but remote changes won't */
		2975	/* unless the filesystem is known to be local, we therefore still poll */
		2976	/* also do poll on <2.6.25, but with normal frequency */
		2977
		2978	if (!fs_2625)
		2979	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2980	else if (!statfs (w->path, &sfs)
		2981	&& (sfs.f_type == 0x1373 /* devfs */
		2982	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2983	|| sfs.f_type == 0x3153464a /* jfs */
		2984	|| sfs.f_type == 0x52654973 /* reiser3 */
		2985	|| sfs.f_type == 0x01021994 /* tempfs */
		2986	|| sfs.f_type == 0x58465342 /* xfs */))
		2987	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		2988	else
		2989	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2837	{	2990	}
		2991	else
		2992	{
		2993	/* can't use inotify, continue to stat */
2838	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;	2994	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2839	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
2840		2995
2841	/* monitor some parent directory for speedup hints */	2996	/* if path is not there, monitor some parent directory for speedup hints */
2842	/* note that exceeding the hardcoded path limit is not a correctness issue, */	2997	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2843	/* but an efficiency issue only */	2998	/* but an efficiency issue only */
2844	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	2999	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2845	{	3000	{
2846	char path [4096];	3001	char path [4096];
…		…
2862	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3017	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2863	}	3018	}
2864	}	3019	}
2865		3020
2866	if (w->wd >= 0)	3021	if (w->wd >= 0)
2867	{
2868	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3022	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2869		3023
2870	/* now local changes will be tracked by inotify, but remote changes won't */	3024	/* now re-arm timer, if required */
2871	/* unless the filesystem it known to be local, we therefore still poll */	3025	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2872	/* also do poll on <2.6.25, but with normal frequency */
2873	struct statfs sfs;
2874
2875	if (fs_2625 && !statfs (w->path, &sfs))
2876	if (sfs.f_type == 0x1373 /* devfs */
2877	|| sfs.f_type == 0xEF53 /* ext2/3 */
2878	|| sfs.f_type == 0x3153464a /* jfs */
2879	|| sfs.f_type == 0x52654973 /* reiser3 */
2880	|| sfs.f_type == 0x01021994 /* tempfs */
2881	|| sfs.f_type == 0x58465342 /* xfs */)
2882	return;
2883
2884	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
2885	ev_timer_again (EV_A_ &w->timer);	3026	ev_timer_again (EV_A_ &w->timer);
2886	}	3027	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2887	}	3028	}
2888		3029
2889	static void noinline	3030	static void noinline
2890	infy_del (EV_P_ ev_stat *w)	3031	infy_del (EV_P_ ev_stat *w)
2891	{	3032	{
…		…
2894		3035
2895	if (wd < 0)	3036	if (wd < 0)
2896	return;	3037	return;
2897		3038
2898	w->wd = -2;	3039	w->wd = -2;
2899	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3040	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2900	wlist_del (&fs_hash [slot].head, (WL)w);	3041	wlist_del (&fs_hash [slot].head, (WL)w);
2901		3042
2902	/* remove this watcher, if others are watching it, they will rearm */	3043	/* remove this watcher, if others are watching it, they will rearm */
2903	inotify_rm_watch (fs_fd, wd);	3044	inotify_rm_watch (fs_fd, wd);
2904	}	3045	}
…		…
2906	static void noinline	3047	static void noinline
2907	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3048	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2908	{	3049	{
2909	if (slot < 0)	3050	if (slot < 0)
2910	/* overflow, need to check for all hash slots */	3051	/* overflow, need to check for all hash slots */
2911	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3052	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2912	infy_wd (EV_A_ slot, wd, ev);	3053	infy_wd (EV_A_ slot, wd, ev);
2913	else	3054	else
2914	{	3055	{
2915	WL w_;	3056	WL w_;
2916		3057
2917	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3058	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2918	{	3059	{
2919	ev_stat *w = (ev_stat *)w_;	3060	ev_stat *w = (ev_stat *)w_;
2920	w_ = w_->next; /* lets us remove this watcher and all before it */	3061	w_ = w_->next; /* lets us remove this watcher and all before it */
2921		3062
2922	if (w->wd == wd || wd == -1)	3063	if (w->wd == wd || wd == -1)
2923	{	3064	{
2924	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3065	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2925	{	3066	{
2926	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3067	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2927	w->wd = -1;	3068	w->wd = -1;
2928	infy_add (EV_A_ w); /* re-add, no matter what */	3069	infy_add (EV_A_ w); /* re-add, no matter what */
2929	}	3070	}
2930		3071
2931	stat_timer_cb (EV_A_ &w->timer, 0);	3072	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2936		3077
2937	static void	3078	static void
2938	infy_cb (EV_P_ ev_io *w, int revents)	3079	infy_cb (EV_P_ ev_io *w, int revents)
2939	{	3080	{
2940	char buf [EV_INOTIFY_BUFSIZE];	3081	char buf [EV_INOTIFY_BUFSIZE];
2941	struct inotify_event *ev = (struct inotify_event *)buf;
2942	int ofs;	3082	int ofs;
2943	int len = read (fs_fd, buf, sizeof (buf));	3083	int len = read (fs_fd, buf, sizeof (buf));
2944		3084
2945	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3085	for (ofs = 0; ofs < len; )
		3086	{
		3087	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2946	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3088	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3089	ofs += sizeof (struct inotify_event) + ev->len;
		3090	}
2947	}	3091	}
2948		3092
2949	inline_size void	3093	inline_size void
2950	check_2625 (EV_P)	3094	ev_check_2625 (EV_P)
2951	{	3095	{
2952	/* kernels < 2.6.25 are borked	3096	/* kernels < 2.6.25 are borked
2953	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html	3097	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
2954	*/	3098	*/
2955	struct utsname buf;	3099	if (ev_linux_version () < 0x020619)
2956	int major, minor, micro;
2957
2958	if (uname (&buf))
2959	return;	3100	return;
2960		3101
2961	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
2962	return;
2963
2964	if (major < 2
2965	|| (major == 2 && minor < 6)
2966	|| (major == 2 && minor == 6 && micro < 25))
2967	return;
2968
2969	fs_2625 = 1;	3102	fs_2625 = 1;
		3103	}
		3104
		3105	inline_size int
		3106	infy_newfd (void)
		3107	{
		3108	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3109	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3110	if (fd >= 0)
		3111	return fd;
		3112	#endif
		3113	return inotify_init ();
2970	}	3114	}
2971		3115
2972	inline_size void	3116	inline_size void
2973	infy_init (EV_P)	3117	infy_init (EV_P)
2974	{	3118	{
2975	if (fs_fd != -2)	3119	if (fs_fd != -2)
2976	return;	3120	return;
2977		3121
2978	fs_fd = -1;	3122	fs_fd = -1;
2979		3123
2980	check_2625 (EV_A);	3124	ev_check_2625 (EV_A);
2981		3125
2982	fs_fd = inotify_init ();	3126	fs_fd = infy_newfd ();
2983		3127
2984	if (fs_fd >= 0)	3128	if (fs_fd >= 0)
2985	{	3129	{
		3130	fd_intern (fs_fd);
2986	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3131	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2987	ev_set_priority (&fs_w, EV_MAXPRI);	3132	ev_set_priority (&fs_w, EV_MAXPRI);
2988	ev_io_start (EV_A_ &fs_w);	3133	ev_io_start (EV_A_ &fs_w);
		3134	ev_unref (EV_A);
2989	}	3135	}
2990	}	3136	}
2991		3137
2992	inline_size void	3138	inline_size void
2993	infy_fork (EV_P)	3139	infy_fork (EV_P)
…		…
2995	int slot;	3141	int slot;
2996		3142
2997	if (fs_fd < 0)	3143	if (fs_fd < 0)
2998	return;	3144	return;
2999		3145
		3146	ev_ref (EV_A);
		3147	ev_io_stop (EV_A_ &fs_w);
3000	close (fs_fd);	3148	close (fs_fd);
3001	fs_fd = inotify_init ();	3149	fs_fd = infy_newfd ();
3002		3150
		3151	if (fs_fd >= 0)
		3152	{
		3153	fd_intern (fs_fd);
		3154	ev_io_set (&fs_w, fs_fd, EV_READ);
		3155	ev_io_start (EV_A_ &fs_w);
		3156	ev_unref (EV_A);
		3157	}
		3158
3003	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3159	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
3004	{	3160	{
3005	WL w_ = fs_hash [slot].head;	3161	WL w_ = fs_hash [slot].head;
3006	fs_hash [slot].head = 0;	3162	fs_hash [slot].head = 0;
3007		3163
3008	while (w_)	3164	while (w_)
…		…
3013	w->wd = -1;	3169	w->wd = -1;
3014		3170
3015	if (fs_fd >= 0)	3171	if (fs_fd >= 0)
3016	infy_add (EV_A_ w); /* re-add, no matter what */	3172	infy_add (EV_A_ w); /* re-add, no matter what */
3017	else	3173	else
		3174	{
		3175	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3176	if (ev_is_active (&w->timer)) ev_ref (EV_A);
3018	ev_timer_again (EV_A_ &w->timer);	3177	ev_timer_again (EV_A_ &w->timer);
		3178	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3179	}
3019	}	3180	}
3020	}	3181	}
3021	}	3182	}
3022		3183
3023	#endif	3184	#endif
…		…
3040	static void noinline	3201	static void noinline
3041	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3202	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
3042	{	3203	{
3043	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3204	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
3044		3205
3045	/* we copy this here each the time so that */	3206	ev_statdata prev = w->attr;
3046	/* prev has the old value when the callback gets invoked */
3047	w->prev = w->attr;
3048	ev_stat_stat (EV_A_ w);	3207	ev_stat_stat (EV_A_ w);
3049		3208
3050	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3209	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
3051	if (	3210	if (
3052	w->prev.st_dev != w->attr.st_dev	3211	prev.st_dev != w->attr.st_dev
3053	|| w->prev.st_ino != w->attr.st_ino	3212	|| prev.st_ino != w->attr.st_ino
3054	|| w->prev.st_mode != w->attr.st_mode	3213	|| prev.st_mode != w->attr.st_mode
3055	|| w->prev.st_nlink != w->attr.st_nlink	3214	|| prev.st_nlink != w->attr.st_nlink
3056	|| w->prev.st_uid != w->attr.st_uid	3215	|| prev.st_uid != w->attr.st_uid
3057	|| w->prev.st_gid != w->attr.st_gid	3216	|| prev.st_gid != w->attr.st_gid
3058	|| w->prev.st_rdev != w->attr.st_rdev	3217	|| prev.st_rdev != w->attr.st_rdev
3059	|| w->prev.st_size != w->attr.st_size	3218	|| prev.st_size != w->attr.st_size
3060	|| w->prev.st_atime != w->attr.st_atime	3219	|| prev.st_atime != w->attr.st_atime
3061	|| w->prev.st_mtime != w->attr.st_mtime	3220	|| prev.st_mtime != w->attr.st_mtime
3062	|| w->prev.st_ctime != w->attr.st_ctime	3221	|| prev.st_ctime != w->attr.st_ctime
3063	) {	3222	) {
		3223	/* we only update w->prev on actual differences */
		3224	/* in case we test more often than invoke the callback, */
		3225	/* to ensure that prev is always different to attr */
		3226	w->prev = prev;
		3227
3064	#if EV_USE_INOTIFY	3228	#if EV_USE_INOTIFY
3065	if (fs_fd >= 0)	3229	if (fs_fd >= 0)
3066	{	3230	{
3067	infy_del (EV_A_ w);	3231	infy_del (EV_A_ w);
3068	infy_add (EV_A_ w);	3232	infy_add (EV_A_ w);
…		…
3093		3257
3094	if (fs_fd >= 0)	3258	if (fs_fd >= 0)
3095	infy_add (EV_A_ w);	3259	infy_add (EV_A_ w);
3096	else	3260	else
3097	#endif	3261	#endif
		3262	{
3098	ev_timer_again (EV_A_ &w->timer);	3263	ev_timer_again (EV_A_ &w->timer);
		3264	ev_unref (EV_A);
		3265	}
3099		3266
3100	ev_start (EV_A_ (W)w, 1);	3267	ev_start (EV_A_ (W)w, 1);
3101		3268
3102	EV_FREQUENT_CHECK;	3269	EV_FREQUENT_CHECK;
3103	}	3270	}
…		…
3112	EV_FREQUENT_CHECK;	3279	EV_FREQUENT_CHECK;
3113		3280
3114	#if EV_USE_INOTIFY	3281	#if EV_USE_INOTIFY
3115	infy_del (EV_A_ w);	3282	infy_del (EV_A_ w);
3116	#endif	3283	#endif
		3284
		3285	if (ev_is_active (&w->timer))
		3286	{
		3287	ev_ref (EV_A);
3117	ev_timer_stop (EV_A_ &w->timer);	3288	ev_timer_stop (EV_A_ &w->timer);
		3289	}
3118		3290
3119	ev_stop (EV_A_ (W)w);	3291	ev_stop (EV_A_ (W)w);
3120		3292
3121	EV_FREQUENT_CHECK;	3293	EV_FREQUENT_CHECK;
3122	}	3294	}
…		…
3167		3339
3168	EV_FREQUENT_CHECK;	3340	EV_FREQUENT_CHECK;
3169	}	3341	}
3170	#endif	3342	#endif
3171		3343
		3344	#if EV_PREPARE_ENABLE
3172	void	3345	void
3173	ev_prepare_start (EV_P_ ev_prepare *w)	3346	ev_prepare_start (EV_P_ ev_prepare *w)
3174	{	3347	{
3175	if (expect_false (ev_is_active (w)))	3348	if (expect_false (ev_is_active (w)))
3176	return;	3349	return;
…		…
3202		3375
3203	ev_stop (EV_A_ (W)w);	3376	ev_stop (EV_A_ (W)w);
3204		3377
3205	EV_FREQUENT_CHECK;	3378	EV_FREQUENT_CHECK;
3206	}	3379	}
		3380	#endif
3207		3381
		3382	#if EV_CHECK_ENABLE
3208	void	3383	void
3209	ev_check_start (EV_P_ ev_check *w)	3384	ev_check_start (EV_P_ ev_check *w)
3210	{	3385	{
3211	if (expect_false (ev_is_active (w)))	3386	if (expect_false (ev_is_active (w)))
3212	return;	3387	return;
…		…
3238		3413
3239	ev_stop (EV_A_ (W)w);	3414	ev_stop (EV_A_ (W)w);
3240		3415
3241	EV_FREQUENT_CHECK;	3416	EV_FREQUENT_CHECK;
3242	}	3417	}
		3418	#endif
3243		3419
3244	#if EV_EMBED_ENABLE	3420	#if EV_EMBED_ENABLE
3245	void noinline	3421	void noinline
3246	ev_embed_sweep (EV_P_ ev_embed *w)	3422	ev_embed_sweep (EV_P_ ev_embed *w)
3247	{	3423	{
3248	ev_loop (w->other, EVLOOP_NONBLOCK);	3424	ev_run (w->other, EVRUN_NOWAIT);
3249	}	3425	}
3250		3426
3251	static void	3427	static void
3252	embed_io_cb (EV_P_ ev_io *io, int revents)	3428	embed_io_cb (EV_P_ ev_io *io, int revents)
3253	{	3429	{
3254	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3430	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
3255		3431
3256	if (ev_cb (w))	3432	if (ev_cb (w))
3257	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3433	ev_feed_event (EV_A_ (W)w, EV_EMBED);
3258	else	3434	else
3259	ev_loop (w->other, EVLOOP_NONBLOCK);	3435	ev_run (w->other, EVRUN_NOWAIT);
3260	}	3436	}
3261		3437
3262	static void	3438	static void
3263	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3439	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
3264	{	3440	{
3265	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3441	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
3266		3442
3267	{	3443	{
3268	struct ev_loop *loop = w->other;	3444	EV_P = w->other;
3269		3445
3270	while (fdchangecnt)	3446	while (fdchangecnt)
3271	{	3447	{
3272	fd_reify (EV_A);	3448	fd_reify (EV_A);
3273	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3449	ev_run (EV_A_ EVRUN_NOWAIT);
3274	}	3450	}
3275	}	3451	}
3276	}	3452	}
3277		3453
3278	static void	3454	static void
…		…
3281	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));	3457	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
3282		3458
3283	ev_embed_stop (EV_A_ w);	3459	ev_embed_stop (EV_A_ w);
3284		3460
3285	{	3461	{
3286	struct ev_loop *loop = w->other;	3462	EV_P = w->other;
3287		3463
3288	ev_loop_fork (EV_A);	3464	ev_loop_fork (EV_A);
3289	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3465	ev_run (EV_A_ EVRUN_NOWAIT);
3290	}	3466	}
3291		3467
3292	ev_embed_start (EV_A_ w);	3468	ev_embed_start (EV_A_ w);
3293	}	3469	}
3294		3470
…		…
3305	{	3481	{
3306	if (expect_false (ev_is_active (w)))	3482	if (expect_false (ev_is_active (w)))
3307	return;	3483	return;
3308		3484
3309	{	3485	{
3310	struct ev_loop *loop = w->other;	3486	EV_P = w->other;
3311	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3487	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
3312	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3488	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
3313	}	3489	}
3314		3490
3315	EV_FREQUENT_CHECK;	3491	EV_FREQUENT_CHECK;
…		…
3342		3518
3343	ev_io_stop (EV_A_ &w->io);	3519	ev_io_stop (EV_A_ &w->io);
3344	ev_prepare_stop (EV_A_ &w->prepare);	3520	ev_prepare_stop (EV_A_ &w->prepare);
3345	ev_fork_stop (EV_A_ &w->fork);	3521	ev_fork_stop (EV_A_ &w->fork);
3346		3522
		3523	ev_stop (EV_A_ (W)w);
		3524
3347	EV_FREQUENT_CHECK;	3525	EV_FREQUENT_CHECK;
3348	}	3526	}
3349	#endif	3527	#endif
3350		3528
3351	#if EV_FORK_ENABLE	3529	#if EV_FORK_ENABLE
…		…
3391	ev_async_start (EV_P_ ev_async *w)	3569	ev_async_start (EV_P_ ev_async *w)
3392	{	3570	{
3393	if (expect_false (ev_is_active (w)))	3571	if (expect_false (ev_is_active (w)))
3394	return;	3572	return;
3395		3573
		3574	w->sent = 0;
		3575
3396	evpipe_init (EV_A);	3576	evpipe_init (EV_A);
3397		3577
3398	EV_FREQUENT_CHECK;	3578	EV_FREQUENT_CHECK;
3399		3579
3400	ev_start (EV_A_ (W)w, ++asynccnt);	3580	ev_start (EV_A_ (W)w, ++asynccnt);
…		…
3427		3607
3428	void	3608	void
3429	ev_async_send (EV_P_ ev_async *w)	3609	ev_async_send (EV_P_ ev_async *w)
3430	{	3610	{
3431	w->sent = 1;	3611	w->sent = 1;
3432	evpipe_write (EV_A_ &gotasync);	3612	evpipe_write (EV_A_ &async_pending);
3433	}	3613	}
3434	#endif	3614	#endif
3435		3615
3436	/*****************************************************************************/	3616	/*****************************************************************************/
3437		3617
…		…
3477	{	3657	{
3478	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3658	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
3479		3659
3480	if (expect_false (!once))	3660	if (expect_false (!once))
3481	{	3661	{
3482	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3662	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
3483	return;	3663	return;
3484	}	3664	}
3485		3665
3486	once->cb = cb;	3666	once->cb = cb;
3487	once->arg = arg;	3667	once->arg = arg;
…		…
3574	if (types & EV_ASYNC)	3754	if (types & EV_ASYNC)
3575	for (i = asynccnt; i--; )	3755	for (i = asynccnt; i--; )
3576	cb (EV_A_ EV_ASYNC, asyncs [i]);	3756	cb (EV_A_ EV_ASYNC, asyncs [i]);
3577	#endif	3757	#endif
3578		3758
		3759	#if EV_PREPARE_ENABLE
3579	if (types & EV_PREPARE)	3760	if (types & EV_PREPARE)
3580	for (i = preparecnt; i--; )	3761	for (i = preparecnt; i--; )
3581	#if EV_EMBED_ENABLE	3762	# if EV_EMBED_ENABLE
3582	if (ev_cb (prepares [i]) != embed_prepare_cb)	3763	if (ev_cb (prepares [i]) != embed_prepare_cb)
3583	#endif	3764	# endif
3584	cb (EV_A_ EV_PREPARE, prepares [i]);	3765	cb (EV_A_ EV_PREPARE, prepares [i]);
		3766	#endif
3585		3767
		3768	#if EV_CHECK_ENABLE
3586	if (types & EV_CHECK)	3769	if (types & EV_CHECK)
3587	for (i = checkcnt; i--; )	3770	for (i = checkcnt; i--; )
3588	cb (EV_A_ EV_CHECK, checks [i]);	3771	cb (EV_A_ EV_CHECK, checks [i]);
		3772	#endif
3589		3773
		3774	#if EV_SIGNAL_ENABLE
3590	if (types & EV_SIGNAL)	3775	if (types & EV_SIGNAL)
3591	for (i = 0; i < signalmax; ++i)	3776	for (i = 0; i < EV_NSIG - 1; ++i)
3592	for (wl = signals [i].head; wl; )	3777	for (wl = signals [i].head; wl; )
3593	{	3778	{
3594	wn = wl->next;	3779	wn = wl->next;
3595	cb (EV_A_ EV_SIGNAL, wl);	3780	cb (EV_A_ EV_SIGNAL, wl);
3596	wl = wn;	3781	wl = wn;
3597	}	3782	}
		3783	#endif
3598		3784
		3785	#if EV_CHILD_ENABLE
3599	if (types & EV_CHILD)	3786	if (types & EV_CHILD)
3600	for (i = EV_PID_HASHSIZE; i--; )	3787	for (i = (EV_PID_HASHSIZE); i--; )
3601	for (wl = childs [i]; wl; )	3788	for (wl = childs [i]; wl; )
3602	{	3789	{
3603	wn = wl->next;	3790	wn = wl->next;
3604	cb (EV_A_ EV_CHILD, wl);	3791	cb (EV_A_ EV_CHILD, wl);
3605	wl = wn;	3792	wl = wn;
3606	}	3793	}
		3794	#endif
3607	/* EV_STAT 0x00001000 /* stat data changed */	3795	/* EV_STAT 0x00001000 /* stat data changed */
3608	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */	3796	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
3609	}	3797	}
3610	#endif	3798	#endif
3611		3799
3612	#if EV_MULTIPLICITY	3800	#if EV_MULTIPLICITY
3613	#include "ev_wrap.h"	3801	#include "ev_wrap.h"
3614	#endif	3802	#endif
3615		3803
3616	#ifdef __cplusplus	3804	EV_CPP(})
3617	}
3618	#endif
3619		3805

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