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Comparing libev/ev.c (file contents):
Revision 1.249 by root, Wed May 21 23:30:52 2008 UTC vs.
Revision 1.381 by root, Mon Jun 27 21:29:35 2011 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 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	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
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
49	# include "config.h"	45	# include "config.h"
50	# endif	46	# endif
51		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
		53
		54	# if HAVE_CLOCK_SYSCALL
		55	# ifndef EV_USE_CLOCK_SYSCALL
		56	# define EV_USE_CLOCK_SYSCALL 1
		57	# ifndef EV_USE_REALTIME
		58	# define EV_USE_REALTIME 0
		59	# endif
		60	# ifndef EV_USE_MONOTONIC
		61	# define EV_USE_MONOTONIC 1
		62	# endif
		63	# endif
		64	# elif !defined(EV_USE_CLOCK_SYSCALL)
		65	# define EV_USE_CLOCK_SYSCALL 0
		66	# endif
		67
52	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
53	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
54	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
55	# endif	71	# endif
56	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
57	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
58	# endif	74	# endif
59	# else	75	# else
60	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
61	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
62	# endif	78	# endif
63	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
65	# endif	81	# endif
66	# endif	82	# endif
67		83
		84	# if HAVE_NANOSLEEP
68	# ifndef EV_USE_NANOSLEEP	85	# ifndef EV_USE_NANOSLEEP
69	# if HAVE_NANOSLEEP
70	# define EV_USE_NANOSLEEP 1	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		87	# endif
71	# else	88	# else
		89	# undef EV_USE_NANOSLEEP
72	# define EV_USE_NANOSLEEP 0	90	# define EV_USE_NANOSLEEP 0
		91	# endif
		92
		93	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		94	# ifndef EV_USE_SELECT
		95	# define EV_USE_SELECT EV_FEATURE_BACKENDS
73	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
74	# endif	100	# endif
75		101
		102	# if HAVE_POLL && HAVE_POLL_H
76	# ifndef EV_USE_SELECT	103	# ifndef EV_USE_POLL
77	# if HAVE_SELECT && HAVE_SYS_SELECT_H	104	# define EV_USE_POLL EV_FEATURE_BACKENDS
78	# define EV_USE_SELECT 1
79	# else
80	# define EV_USE_SELECT 0
81	# endif	105	# endif
82	# endif
83
84	# ifndef EV_USE_POLL
85	# if HAVE_POLL && HAVE_POLL_H
86	# define EV_USE_POLL 1
87	# else	106	# else
		107	# undef EV_USE_POLL
88	# define EV_USE_POLL 0	108	# define EV_USE_POLL 0
89	# endif
90	# endif	109	# endif
91		110
92	# ifndef EV_USE_EPOLL
93	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
94	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
95	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
96	# define EV_USE_EPOLL 0
97	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
98	# endif	118	# endif
99		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
100	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
101	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
102	# define EV_USE_KQUEUE 1
103	# else
104	# define EV_USE_KQUEUE 0
105	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
106	# endif	127	# endif
107		128
108	# ifndef EV_USE_PORT
109	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
110	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
111	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
112	# define EV_USE_PORT 0
113	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
114	# endif	136	# endif
115		137
116	# ifndef EV_USE_INOTIFY
117	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
118	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
119	# else
120	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
121	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
122	# endif	145	# endif
123		146
		147	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
124	# ifndef EV_USE_EVENTFD	148	# ifndef EV_USE_SIGNALFD
125	# if HAVE_EVENTFD	149	# define EV_USE_SIGNALFD EV_FEATURE_OS
126	# define EV_USE_EVENTFD 1
127	# else
128	# define EV_USE_EVENTFD 0
129	# endif	150	# endif
		151	# else
		152	# undef EV_USE_SIGNALFD
		153	# define EV_USE_SIGNALFD 0
130	# endif	154	# endif
131		155
		156	# if HAVE_EVENTFD
		157	# ifndef EV_USE_EVENTFD
		158	# define EV_USE_EVENTFD EV_FEATURE_OS
		159	# endif
		160	# else
		161	# undef EV_USE_EVENTFD
		162	# define EV_USE_EVENTFD 0
132	#endif	163	# endif
		164
		165	#endif
133		166
134	#include <math.h>
135	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
136	#include <fcntl.h>	169	#include <fcntl.h>
137	#include <stddef.h>	170	#include <stddef.h>
138		171
139	#include <stdio.h>	172	#include <stdio.h>
140		173
141	#include <assert.h>	174	#include <assert.h>
142	#include <errno.h>	175	#include <errno.h>
143	#include <sys/types.h>	176	#include <sys/types.h>
144	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
145		179
146	#include <signal.h>	180	#include <signal.h>
147		181
148	#ifdef EV_H	182	#ifdef EV_H
149	# include EV_H	183	# include EV_H
150	#else	184	#else
151	# include "ev.h"	185	# include "ev.h"
152	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
153		189
154	#ifndef _WIN32	190	#ifndef _WIN32
155	# include <sys/time.h>	191	# include <sys/time.h>
156	# include <sys/wait.h>	192	# include <sys/wait.h>
157	# include <unistd.h>	193	# include <unistd.h>
158	#else	194	#else
		195	# include <io.h>
159	# define WIN32_LEAN_AND_MEAN	196	# define WIN32_LEAN_AND_MEAN
160	# include <windows.h>	197	# include <windows.h>
161	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
162	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
163	# endif	200	# endif
		201	# undef EV_AVOID_STDIO
164	#endif	202	#endif
		203
		204	/* OS X, in its infinite idiocy, actually HARDCODES
		205	* a limit of 1024 into their select. Where people have brains,
		206	* OS X engineers apparently have a vacuum. Or maybe they were
		207	* ordered to have a vacuum, or they do anything for money.
		208	* This might help. Or not.
		209	*/
		210	#define _DARWIN_UNLIMITED_SELECT 1
165		211
166	/* this block tries to deduce configuration from header-defined symbols and defaults */	212	/* this block tries to deduce configuration from header-defined symbols and defaults */
167		213
		214	/* try to deduce the maximum number of signals on this platform */
		215	#if defined (EV_NSIG)
		216	/* use what's provided */
		217	#elif defined (NSIG)
		218	# define EV_NSIG (NSIG)
		219	#elif defined(_NSIG)
		220	# define EV_NSIG (_NSIG)
		221	#elif defined (SIGMAX)
		222	# define EV_NSIG (SIGMAX+1)
		223	#elif defined (SIG_MAX)
		224	# define EV_NSIG (SIG_MAX+1)
		225	#elif defined (_SIG_MAX)
		226	# define EV_NSIG (_SIG_MAX+1)
		227	#elif defined (MAXSIG)
		228	# define EV_NSIG (MAXSIG+1)
		229	#elif defined (MAX_SIG)
		230	# define EV_NSIG (MAX_SIG+1)
		231	#elif defined (SIGARRAYSIZE)
		232	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		233	#elif defined (_sys_nsig)
		234	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		235	#else
		236	# error "unable to find value for NSIG, please report"
		237	/* to make it compile regardless, just remove the above line, */
		238	/* but consider reporting it, too! :) */
		239	# define EV_NSIG 65
		240	#endif
		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
		246	#ifndef EV_USE_CLOCK_SYSCALL
		247	# if __linux && __GLIBC__ >= 2
		248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
		249	# else
		250	# define EV_USE_CLOCK_SYSCALL 0
		251	# endif
		252	#endif
		253
168	#ifndef EV_USE_MONOTONIC	254	#ifndef EV_USE_MONOTONIC
		255	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		256	# define EV_USE_MONOTONIC EV_FEATURE_OS
		257	# else
169	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
		259	# endif
170	#endif	260	#endif
171		261
172	#ifndef EV_USE_REALTIME	262	#ifndef EV_USE_REALTIME
173	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
174	#endif	264	#endif
175		265
176	#ifndef EV_USE_NANOSLEEP	266	#ifndef EV_USE_NANOSLEEP
		267	# if _POSIX_C_SOURCE >= 199309L
		268	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		269	# else
177	# define EV_USE_NANOSLEEP 0	270	# define EV_USE_NANOSLEEP 0
		271	# endif
178	#endif	272	#endif
179		273
180	#ifndef EV_USE_SELECT	274	#ifndef EV_USE_SELECT
181	# define EV_USE_SELECT 1	275	# define EV_USE_SELECT EV_FEATURE_BACKENDS
182	#endif	276	#endif
183		277
184	#ifndef EV_USE_POLL	278	#ifndef EV_USE_POLL
185	# ifdef _WIN32	279	# ifdef _WIN32
186	# define EV_USE_POLL 0	280	# define EV_USE_POLL 0
187	# else	281	# else
188	# define EV_USE_POLL 1	282	# define EV_USE_POLL EV_FEATURE_BACKENDS
189	# endif	283	# endif
190	#endif	284	#endif
191		285
192	#ifndef EV_USE_EPOLL	286	#ifndef EV_USE_EPOLL
193	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	287	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
194	# define EV_USE_EPOLL 1	288	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
195	# else	289	# else
196	# define EV_USE_EPOLL 0	290	# define EV_USE_EPOLL 0
197	# endif	291	# endif
198	#endif	292	#endif
199		293
…		…
205	# define EV_USE_PORT 0	299	# define EV_USE_PORT 0
206	#endif	300	#endif
207		301
208	#ifndef EV_USE_INOTIFY	302	#ifndef EV_USE_INOTIFY
209	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))	303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
210	# define EV_USE_INOTIFY 1	304	# define EV_USE_INOTIFY EV_FEATURE_OS
211	# else	305	# else
212	# define EV_USE_INOTIFY 0	306	# define EV_USE_INOTIFY 0
213	# endif	307	# endif
214	#endif	308	#endif
215		309
216	#ifndef EV_PID_HASHSIZE	310	#ifndef EV_PID_HASHSIZE
217	# if EV_MINIMAL	311	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
218	# define EV_PID_HASHSIZE 1
219	# else
220	# define EV_PID_HASHSIZE 16
221	# endif
222	#endif	312	#endif
223		313
224	#ifndef EV_INOTIFY_HASHSIZE	314	#ifndef EV_INOTIFY_HASHSIZE
225	# if EV_MINIMAL	315	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
226	# define EV_INOTIFY_HASHSIZE 1
227	# else
228	# define EV_INOTIFY_HASHSIZE 16
229	# endif
230	#endif	316	#endif
231		317
232	#ifndef EV_USE_EVENTFD	318	#ifndef EV_USE_EVENTFD
233	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))	319	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
234	# define EV_USE_EVENTFD 1	320	# define EV_USE_EVENTFD EV_FEATURE_OS
235	# else	321	# else
236	# define EV_USE_EVENTFD 0	322	# define EV_USE_EVENTFD 0
237	# endif	323	# endif
238	#endif	324	#endif
239		325
		326	#ifndef EV_USE_SIGNALFD
		327	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		328	# define EV_USE_SIGNALFD EV_FEATURE_OS
		329	# else
		330	# define EV_USE_SIGNALFD 0
		331	# endif
		332	#endif
		333
240	#if 0 /* debugging */	334	#if 0 /* debugging */
241	# define EV_VERIFY 1	335	# define EV_VERIFY 3
242	# define EV_USE_4HEAP 1	336	# define EV_USE_4HEAP 1
243	# define EV_HEAP_CACHE_AT 1	337	# define EV_HEAP_CACHE_AT 1
244	#endif	338	#endif
245		339
		340	#ifndef EV_VERIFY
		341	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		342	#endif
		343
246	#ifndef EV_USE_4HEAP	344	#ifndef EV_USE_4HEAP
247	# define EV_USE_4HEAP !EV_MINIMAL	345	# define EV_USE_4HEAP EV_FEATURE_DATA
248	#endif	346	#endif
249		347
250	#ifndef EV_HEAP_CACHE_AT	348	#ifndef EV_HEAP_CACHE_AT
251	# define EV_HEAP_CACHE_AT !EV_MINIMAL	349	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		350	#endif
		351
		352	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		353	/* which makes programs even slower. might work on other unices, too. */
		354	#if EV_USE_CLOCK_SYSCALL
		355	# include <syscall.h>
		356	# ifdef SYS_clock_gettime
		357	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		358	# undef EV_USE_MONOTONIC
		359	# define EV_USE_MONOTONIC 1
		360	# else
		361	# undef EV_USE_CLOCK_SYSCALL
		362	# define EV_USE_CLOCK_SYSCALL 0
		363	# endif
252	#endif	364	#endif
253		365
254	/* this block fixes any misconfiguration where we know we run into trouble otherwise */	366	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		367
		368	#ifdef _AIX
		369	/* AIX has a completely broken poll.h header */
		370	# undef EV_USE_POLL
		371	# define EV_USE_POLL 0
		372	#endif
255		373
256	#ifndef CLOCK_MONOTONIC	374	#ifndef CLOCK_MONOTONIC
257	# undef EV_USE_MONOTONIC	375	# undef EV_USE_MONOTONIC
258	# define EV_USE_MONOTONIC 0	376	# define EV_USE_MONOTONIC 0
259	#endif	377	#endif
…		…
267	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
268	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
269	#endif	387	#endif
270		388
271	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
272	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
273	# include <sys/select.h>	392	# include <sys/select.h>
274	# endif	393	# endif
275	#endif	394	#endif
276		395
277	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
		397	# include <sys/statfs.h>
278	# include <sys/inotify.h>	398	# include <sys/inotify.h>
		399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		400	# ifndef IN_DONT_FOLLOW
		401	# undef EV_USE_INOTIFY
		402	# define EV_USE_INOTIFY 0
		403	# endif
279	#endif	404	#endif
280		405
281	#if EV_SELECT_IS_WINSOCKET	406	#if EV_SELECT_IS_WINSOCKET
282	# include <winsock.h>	407	# include <winsock.h>
283	#endif	408	#endif
284		409
285	#if EV_USE_EVENTFD	410	#if EV_USE_EVENTFD
286	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */	411	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
287	# include <stdint.h>	412	# include <stdint.h>
288	# ifdef __cplusplus	413	# ifndef EFD_NONBLOCK
289	extern "C" {	414	# define EFD_NONBLOCK O_NONBLOCK
290	# endif	415	# endif
291	int eventfd (unsigned int initval, int flags);	416	# ifndef EFD_CLOEXEC
292	# ifdef __cplusplus	417	# ifdef O_CLOEXEC
293	}	418	# define EFD_CLOEXEC O_CLOEXEC
		419	# else
		420	# define EFD_CLOEXEC 02000000
		421	# endif
294	# endif	422	# endif
		423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
		424	#endif
		425
		426	#if EV_USE_SIGNALFD
		427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		428	# include <stdint.h>
		429	# ifndef SFD_NONBLOCK
		430	# define SFD_NONBLOCK O_NONBLOCK
		431	# endif
		432	# ifndef SFD_CLOEXEC
		433	# ifdef O_CLOEXEC
		434	# define SFD_CLOEXEC O_CLOEXEC
		435	# else
		436	# define SFD_CLOEXEC 02000000
		437	# endif
		438	# endif
		439	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
		440
		441	struct signalfd_siginfo
		442	{
		443	uint32_t ssi_signo;
		444	char pad[128 - sizeof (uint32_t)];
		445	};
295	#endif	446	#endif
296		447
297	/**/	448	/**/
298		449
299	/* EV_VERIFY: enable internal consistency checks
300	* undefined or zero: no verification done or available
301	* 1 or higher: ev_loop_verify function available
302	* 2 or higher: ev_loop_verify is called frequently
303	*/
304	#if EV_VERIFY >= 1	450	#if EV_VERIFY >= 3
305	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)	451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
306	#else	452	#else
307	# define EV_FREQUENT_CHECK do { } while (0)	453	# define EV_FREQUENT_CHECK do { } while (0)
308	#endif	454	#endif
309		455
310	/*	456	/*
311	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
312	* It is added to ev_rt_now when scheduling periodics
313	* to ensure progress, time-wise, even when rounding
314	* errors are against us.
315	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
316	* Better solutions welcome.
317	*/	459	*/
318	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		461	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
319		462
320	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
321	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
322	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
323		465
324	#if __GNUC__ >= 4	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
325	# define expect(expr,value) __builtin_expect ((expr),(value))	467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
326	# define noinline __attribute__ ((noinline))	468
		469	/* the following are taken from libecb */
		470	/* ecb.h start */
		471
		472	/* many compilers define _GNUC_ to some versions but then only implement
		473	* what their idiot authors think are the "more important" extensions,
		474	* causing enourmous grief in return for some better fake benchmark numbers.
		475	* or so.
		476	* we try to detect these and simply assume they are not gcc - if they have
		477	* an issue with that they should have done it right in the first place.
		478	*/
		479	#ifndef ECB_GCC_VERSION
		480	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
		481	#define ECB_GCC_VERSION(major,minor) 0
		482	#else
		483	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		484	#endif
		485	#endif
		486
		487	#if __cplusplus
		488	#define ecb_inline static inline
		489	#elif ECB_GCC_VERSION(2,5)
		490	#define ecb_inline static __inline__
		491	#elif ECB_C99
		492	#define ecb_inline static inline
327	#else	493	#else
328	# define expect(expr,value) (expr)	494	#define ecb_inline static
329	# define noinline
330	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
331	# define inline
332	# endif	495	#endif
333	#endif
334		496
		497	#if ECB_GCC_VERSION(3,1)
		498	#define ecb_attribute(attrlist) __attribute__(attrlist)
		499	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		500	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		501	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		502	#else
		503	#define ecb_attribute(attrlist)
		504	#define ecb_is_constant(expr) 0
		505	#define ecb_expect(expr,value) (expr)
		506	#define ecb_prefetch(addr,rw,locality)
		507	#endif
		508
		509	#define ecb_noinline ecb_attribute ((__noinline__))
		510	#define ecb_noreturn ecb_attribute ((__noreturn__))
		511	#define ecb_unused ecb_attribute ((__unused__))
		512	#define ecb_const ecb_attribute ((__const__))
		513	#define ecb_pure ecb_attribute ((__pure__))
		514
		515	#if ECB_GCC_VERSION(4,3)
		516	#define ecb_artificial ecb_attribute ((__artificial__))
		517	#define ecb_hot ecb_attribute ((__hot__))
		518	#define ecb_cold ecb_attribute ((__cold__))
		519	#else
		520	#define ecb_artificial
		521	#define ecb_hot
		522	#define ecb_cold
		523	#endif
		524
		525	/* put around conditional expressions if you are very sure that the */
		526	/* expression is mostly true or mostly false. note that these return */
		527	/* booleans, not the expression. */
335	#define expect_false(expr) expect ((expr) != 0, 0)	528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
336	#define expect_true(expr) expect ((expr) != 0, 1)	529	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		530	/* ecb.h end */
		531
		532	#define expect_false(cond) ecb_expect_false (cond)
		533	#define expect_true(cond) ecb_expect_true (cond)
		534	#define noinline ecb_noinline
		535
337	#define inline_size static inline	536	#define inline_size ecb_inline
338		537
339	#if EV_MINIMAL	538	#if EV_FEATURE_CODE
		539	# define inline_speed ecb_inline
		540	#else
340	# define inline_speed static noinline	541	# define inline_speed static noinline
		542	#endif
		543
		544	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		545
		546	#if EV_MINPRI == EV_MAXPRI
		547	# define ABSPRI(w) (((W)w), 0)
341	#else	548	#else
342	# define inline_speed static inline
343	#endif
344
345	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
346	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	549	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		550	#endif
347		551
348	#define EMPTY /* required for microsofts broken pseudo-c compiler */	552	#define EMPTY /* required for microsofts broken pseudo-c compiler */
349	#define EMPTY2(a,b) /* used to suppress some warnings */	553	#define EMPTY2(a,b) /* used to suppress some warnings */
350		554
351	typedef ev_watcher *W;	555	typedef ev_watcher *W;
…		…
353	typedef ev_watcher_time *WT;	557	typedef ev_watcher_time *WT;
354		558
355	#define ev_active(w) ((W)(w))->active	559	#define ev_active(w) ((W)(w))->active
356	#define ev_at(w) ((WT)(w))->at	560	#define ev_at(w) ((WT)(w))->at
357		561
		562	#if EV_USE_REALTIME
		563	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		564	/* giving it a reasonably high chance of working on typical architectures */
		565	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		566	#endif
		567
358	#if EV_USE_MONOTONIC	568	#if EV_USE_MONOTONIC
359	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
360	/* giving it a reasonably high chance of working on typical architetcures */
361	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	569	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		570	#endif
		571
		572	#ifndef EV_FD_TO_WIN32_HANDLE
		573	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		574	#endif
		575	#ifndef EV_WIN32_HANDLE_TO_FD
		576	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		577	#endif
		578	#ifndef EV_WIN32_CLOSE_FD
		579	# define EV_WIN32_CLOSE_FD(fd) close (fd)
362	#endif	580	#endif
363		581
364	#ifdef _WIN32	582	#ifdef _WIN32
365	# include "ev_win32.c"	583	# include "ev_win32.c"
366	#endif	584	#endif
367		585
368	/*****************************************************************************/	586	/*****************************************************************************/
369		587
		588	/* define a suitable floor function (only used by periodics atm) */
		589
		590	#if EV_USE_FLOOR
		591	# include <math.h>
		592	# define ev_floor(v) floor (v)
		593	#else
		594
		595	#include <float.h>
		596
		597	/* a floor() replacement function, should be independent of ev_tstamp type */
		598	static ev_tstamp noinline
		599	ev_floor (ev_tstamp v)
		600	{
		601	/* the choice of shift factor is not terribly important */
		602	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		603	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		604	#else
		605	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		606	#endif
		607
		608	/* argument too large for an unsigned long? */
		609	if (expect_false (v >= shift))
		610	{
		611	ev_tstamp f;
		612
		613	if (v == v - 1.)
		614	return v; /* very large number */
		615
		616	f = shift * ev_floor (v * (1. / shift));
		617	return f + ev_floor (v - f);
		618	}
		619
		620	/* special treatment for negative args? */
		621	if (expect_false (v < 0.))
		622	{
		623	ev_tstamp f = -ev_floor (-v);
		624
		625	return f - (f == v ? 0 : 1);
		626	}
		627
		628	/* fits into an unsigned long */
		629	return (unsigned long)v;
		630	}
		631
		632	#endif
		633
		634	/*****************************************************************************/
		635
		636	#ifdef __linux
		637	# include <sys/utsname.h>
		638	#endif
		639
		640	static unsigned int noinline ecb_cold
		641	ev_linux_version (void)
		642	{
		643	#ifdef __linux
		644	unsigned int v = 0;
		645	struct utsname buf;
		646	int i;
		647	char *p = buf.release;
		648
		649	if (uname (&buf))
		650	return 0;
		651
		652	for (i = 3+1; --i; )
		653	{
		654	unsigned int c = 0;
		655
		656	for (;;)
		657	{
		658	if (*p >= '0' && *p <= '9')
		659	c = c * 10 + *p++ - '0';
		660	else
		661	{
		662	p += *p == '.';
		663	break;
		664	}
		665	}
		666
		667	v = (v << 8) | c;
		668	}
		669
		670	return v;
		671	#else
		672	return 0;
		673	#endif
		674	}
		675
		676	/*****************************************************************************/
		677
		678	#if EV_AVOID_STDIO
		679	static void noinline ecb_cold
		680	ev_printerr (const char *msg)
		681	{
		682	write (STDERR_FILENO, msg, strlen (msg));
		683	}
		684	#endif
		685
370	static void (*syserr_cb)(const char *msg);	686	static void (*syserr_cb)(const char *msg);
371		687
372	void	688	void ecb_cold
373	ev_set_syserr_cb (void (*cb)(const char *msg))	689	ev_set_syserr_cb (void (*cb)(const char *msg))
374	{	690	{
375	syserr_cb = cb;	691	syserr_cb = cb;
376	}	692	}
377		693
378	static void noinline	694	static void noinline ecb_cold
379	syserr (const char *msg)	695	ev_syserr (const char *msg)
380	{	696	{
381	if (!msg)	697	if (!msg)
382	msg = "(libev) system error";	698	msg = "(libev) system error";
383		699
384	if (syserr_cb)	700	if (syserr_cb)
385	syserr_cb (msg);	701	syserr_cb (msg);
386	else	702	else
387	{	703	{
		704	#if EV_AVOID_STDIO
		705	ev_printerr (msg);
		706	ev_printerr (": ");
		707	ev_printerr (strerror (errno));
		708	ev_printerr ("\n");
		709	#else
388	perror (msg);	710	perror (msg);
		711	#endif
389	abort ();	712	abort ();
390	}	713	}
391	}	714	}
392		715
393	static void *	716	static void *
394	ev_realloc_emul (void *ptr, long size)	717	ev_realloc_emul (void *ptr, long size)
395	{	718	{
		719	#if __GLIBC__
		720	return realloc (ptr, size);
		721	#else
396	/* some systems, notably openbsd and darwin, fail to properly	722	/* some systems, notably openbsd and darwin, fail to properly
397	* implement realloc (x, 0) (as required by both ansi c-98 and	723	* implement realloc (x, 0) (as required by both ansi c-89 and
398	* the single unix specification, so work around them here.	724	* the single unix specification, so work around them here.
399	*/	725	*/
400		726
401	if (size)	727	if (size)
402	return realloc (ptr, size);	728	return realloc (ptr, size);
403		729
404	free (ptr);	730	free (ptr);
405	return 0;	731	return 0;
		732	#endif
406	}	733	}
407		734
408	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;	735	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
409		736
410	void	737	void ecb_cold
411	ev_set_allocator (void *(*cb)(void *ptr, long size))	738	ev_set_allocator (void *(*cb)(void *ptr, long size))
412	{	739	{
413	alloc = cb;	740	alloc = cb;
414	}	741	}
415		742
…		…
418	{	745	{
419	ptr = alloc (ptr, size);	746	ptr = alloc (ptr, size);
420		747
421	if (!ptr && size)	748	if (!ptr && size)
422	{	749	{
		750	#if EV_AVOID_STDIO
		751	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		752	#else
423	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	753	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		754	#endif
424	abort ();	755	abort ();
425	}	756	}
426		757
427	return ptr;	758	return ptr;
428	}	759	}
…		…
430	#define ev_malloc(size) ev_realloc (0, (size))	761	#define ev_malloc(size) ev_realloc (0, (size))
431	#define ev_free(ptr) ev_realloc ((ptr), 0)	762	#define ev_free(ptr) ev_realloc ((ptr), 0)
432		763
433	/*****************************************************************************/	764	/*****************************************************************************/
434		765
		766	/* set in reify when reification needed */
		767	#define EV_ANFD_REIFY 1
		768
		769	/* file descriptor info structure */
435	typedef struct	770	typedef struct
436	{	771	{
437	WL head;	772	WL head;
438	unsigned char events;	773	unsigned char events; /* the events watched for */
		774	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		775	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
439	unsigned char reify;	776	unsigned char unused;
		777	#if EV_USE_EPOLL
		778	unsigned int egen; /* generation counter to counter epoll bugs */
		779	#endif
440	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
441	SOCKET handle;	781	SOCKET handle;
442	#endif	782	#endif
		783	#if EV_USE_IOCP
		784	OVERLAPPED or, ow;
		785	#endif
443	} ANFD;	786	} ANFD;
444		787
		788	/* stores the pending event set for a given watcher */
445	typedef struct	789	typedef struct
446	{	790	{
447	W w;	791	W w;
448	int events;	792	int events; /* the pending event set for the given watcher */
449	} ANPENDING;	793	} ANPENDING;
450		794
451	#if EV_USE_INOTIFY	795	#if EV_USE_INOTIFY
452	/* hash table entry per inotify-id */	796	/* hash table entry per inotify-id */
453	typedef struct	797	typedef struct
…		…
456	} ANFS;	800	} ANFS;
457	#endif	801	#endif
458		802
459	/* Heap Entry */	803	/* Heap Entry */
460	#if EV_HEAP_CACHE_AT	804	#if EV_HEAP_CACHE_AT
		805	/* a heap element */
461	typedef struct {	806	typedef struct {
462	ev_tstamp at;	807	ev_tstamp at;
463	WT w;	808	WT w;
464	} ANHE;	809	} ANHE;
465		810
466	#define ANHE_w(he) (he).w /* access watcher, read-write */	811	#define ANHE_w(he) (he).w /* access watcher, read-write */
467	#define ANHE_at(he) (he).at /* access cached at, read-only */	812	#define ANHE_at(he) (he).at /* access cached at, read-only */
468	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */	813	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
469	#else	814	#else
		815	/* a heap element */
470	typedef WT ANHE;	816	typedef WT ANHE;
471		817
472	#define ANHE_w(he) (he)	818	#define ANHE_w(he) (he)
473	#define ANHE_at(he) (he)->at	819	#define ANHE_at(he) (he)->at
474	#define ANHE_at_cache(he)	820	#define ANHE_at_cache(he)
…		…
498		844
499	static int ev_default_loop_ptr;	845	static int ev_default_loop_ptr;
500		846
501	#endif	847	#endif
502		848
		849	#if EV_FEATURE_API
		850	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		851	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		852	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		853	#else
		854	# define EV_RELEASE_CB (void)0
		855	# define EV_ACQUIRE_CB (void)0
		856	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		857	#endif
		858
		859	#define EVBREAK_RECURSE 0x80
		860
503	/*****************************************************************************/	861	/*****************************************************************************/
504		862
		863	#ifndef EV_HAVE_EV_TIME
505	ev_tstamp	864	ev_tstamp
506	ev_time (void)	865	ev_time (void)
507	{	866	{
508	#if EV_USE_REALTIME	867	#if EV_USE_REALTIME
		868	if (expect_true (have_realtime))
		869	{
509	struct timespec ts;	870	struct timespec ts;
510	clock_gettime (CLOCK_REALTIME, &ts);	871	clock_gettime (CLOCK_REALTIME, &ts);
511	return ts.tv_sec + ts.tv_nsec * 1e-9;	872	return ts.tv_sec + ts.tv_nsec * 1e-9;
512	#else	873	}
		874	#endif
		875
513	struct timeval tv;	876	struct timeval tv;
514	gettimeofday (&tv, 0);	877	gettimeofday (&tv, 0);
515	return tv.tv_sec + tv.tv_usec * 1e-6;	878	return tv.tv_sec + tv.tv_usec * 1e-6;
516	#endif
517	}	879	}
		880	#endif
518		881
519	ev_tstamp inline_size	882	inline_size ev_tstamp
520	get_clock (void)	883	get_clock (void)
521	{	884	{
522	#if EV_USE_MONOTONIC	885	#if EV_USE_MONOTONIC
523	if (expect_true (have_monotonic))	886	if (expect_true (have_monotonic))
524	{	887	{
…		…
545	if (delay > 0.)	908	if (delay > 0.)
546	{	909	{
547	#if EV_USE_NANOSLEEP	910	#if EV_USE_NANOSLEEP
548	struct timespec ts;	911	struct timespec ts;
549		912
550	ts.tv_sec = (time_t)delay;	913	EV_TS_SET (ts, delay);
551	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
552
553	nanosleep (&ts, 0);	914	nanosleep (&ts, 0);
554	#elif defined(_WIN32)	915	#elif defined(_WIN32)
555	Sleep ((unsigned long)(delay * 1e3));	916	Sleep ((unsigned long)(delay * 1e3));
556	#else	917	#else
557	struct timeval tv;	918	struct timeval tv;
558		919
559	tv.tv_sec = (time_t)delay;	920	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
560	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	921	/* something not guaranteed by newer posix versions, but guaranteed */
561		922	/* by older ones */
		923	EV_TV_SET (tv, delay);
562	select (0, 0, 0, 0, &tv);	924	select (0, 0, 0, 0, &tv);
563	#endif	925	#endif
564	}	926	}
565	}	927	}
566		928
567	/*****************************************************************************/	929	/*****************************************************************************/
568		930
569	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */	931	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
570		932
571	int inline_size	933	/* find a suitable new size for the given array, */
		934	/* hopefully by rounding to a nice-to-malloc size */
		935	inline_size int
572	array_nextsize (int elem, int cur, int cnt)	936	array_nextsize (int elem, int cur, int cnt)
573	{	937	{
574	int ncur = cur + 1;	938	int ncur = cur + 1;
575		939
576	do	940	do
…		…
587	}	951	}
588		952
589	return ncur;	953	return ncur;
590	}	954	}
591		955
592	static noinline void *	956	static void * noinline ecb_cold
593	array_realloc (int elem, void *base, int *cur, int cnt)	957	array_realloc (int elem, void *base, int *cur, int cnt)
594	{	958	{
595	*cur = array_nextsize (elem, *cur, cnt);	959	*cur = array_nextsize (elem, *cur, cnt);
596	return ev_realloc (base, elem * *cur);	960	return ev_realloc (base, elem * *cur);
597	}	961	}
		962
		963	#define array_init_zero(base,count) \
		964	memset ((void *)(base), 0, sizeof (*(base)) * (count))
598		965
599	#define array_needsize(type,base,cur,cnt,init) \	966	#define array_needsize(type,base,cur,cnt,init) \
600	if (expect_false ((cnt) > (cur))) \	967	if (expect_false ((cnt) > (cur))) \
601	{ \	968	{ \
602	int ocur_ = (cur); \	969	int ocur_ = (cur); \
…		…
614	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	981	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
615	}	982	}
616	#endif	983	#endif
617		984
618	#define array_free(stem, idx) \	985	#define array_free(stem, idx) \
619	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	986	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
620		987
621	/*****************************************************************************/	988	/*****************************************************************************/
		989
		990	/* dummy callback for pending events */
		991	static void noinline
		992	pendingcb (EV_P_ ev_prepare *w, int revents)
		993	{
		994	}
622		995
623	void noinline	996	void noinline
624	ev_feed_event (EV_P_ void *w, int revents)	997	ev_feed_event (EV_P_ void *w, int revents)
625	{	998	{
626	W w_ = (W)w;	999	W w_ = (W)w;
…		…
635	pendings [pri][w_->pending - 1].w = w_;	1008	pendings [pri][w_->pending - 1].w = w_;
636	pendings [pri][w_->pending - 1].events = revents;	1009	pendings [pri][w_->pending - 1].events = revents;
637	}	1010	}
638	}	1011	}
639		1012
640	void inline_speed	1013	inline_speed void
		1014	feed_reverse (EV_P_ W w)
		1015	{
		1016	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		1017	rfeeds [rfeedcnt++] = w;
		1018	}
		1019
		1020	inline_size void
		1021	feed_reverse_done (EV_P_ int revents)
		1022	{
		1023	do
		1024	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		1025	while (rfeedcnt);
		1026	}
		1027
		1028	inline_speed void
641	queue_events (EV_P_ W *events, int eventcnt, int type)	1029	queue_events (EV_P_ W *events, int eventcnt, int type)
642	{	1030	{
643	int i;	1031	int i;
644		1032
645	for (i = 0; i < eventcnt; ++i)	1033	for (i = 0; i < eventcnt; ++i)
646	ev_feed_event (EV_A_ events [i], type);	1034	ev_feed_event (EV_A_ events [i], type);
647	}	1035	}
648		1036
649	/*****************************************************************************/	1037	/*****************************************************************************/
650		1038
651	void inline_size	1039	inline_speed void
652	anfds_init (ANFD *base, int count)
653	{
654	while (count--)
655	{
656	base->head = 0;
657	base->events = EV_NONE;
658	base->reify = 0;
659
660	++base;
661	}
662	}
663
664	void inline_speed
665	fd_event (EV_P_ int fd, int revents)	1040	fd_event_nocheck (EV_P_ int fd, int revents)
666	{	1041	{
667	ANFD *anfd = anfds + fd;	1042	ANFD *anfd = anfds + fd;
668	ev_io *w;	1043	ev_io *w;
669		1044
670	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1045	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
674	if (ev)	1049	if (ev)
675	ev_feed_event (EV_A_ (W)w, ev);	1050	ev_feed_event (EV_A_ (W)w, ev);
676	}	1051	}
677	}	1052	}
678		1053
		1054	/* do not submit kernel events for fds that have reify set */
		1055	/* because that means they changed while we were polling for new events */
		1056	inline_speed void
		1057	fd_event (EV_P_ int fd, int revents)
		1058	{
		1059	ANFD *anfd = anfds + fd;
		1060
		1061	if (expect_true (!anfd->reify))
		1062	fd_event_nocheck (EV_A_ fd, revents);
		1063	}
		1064
679	void	1065	void
680	ev_feed_fd_event (EV_P_ int fd, int revents)	1066	ev_feed_fd_event (EV_P_ int fd, int revents)
681	{	1067	{
682	if (fd >= 0 && fd < anfdmax)	1068	if (fd >= 0 && fd < anfdmax)
683	fd_event (EV_A_ fd, revents);	1069	fd_event_nocheck (EV_A_ fd, revents);
684	}	1070	}
685		1071
686	void inline_size	1072	/* make sure the external fd watch events are in-sync */
		1073	/* with the kernel/libev internal state */
		1074	inline_size void
687	fd_reify (EV_P)	1075	fd_reify (EV_P)
688	{	1076	{
689	int i;	1077	int i;
		1078
		1079	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1080	for (i = 0; i < fdchangecnt; ++i)
		1081	{
		1082	int fd = fdchanges [i];
		1083	ANFD *anfd = anfds + fd;
		1084
		1085	if (anfd->reify & EV__IOFDSET && anfd->head)
		1086	{
		1087	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1088
		1089	if (handle != anfd->handle)
		1090	{
		1091	unsigned long arg;
		1092
		1093	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1094
		1095	/* handle changed, but fd didn't - we need to do it in two steps */
		1096	backend_modify (EV_A_ fd, anfd->events, 0);
		1097	anfd->events = 0;
		1098	anfd->handle = handle;
		1099	}
		1100	}
		1101	}
		1102	#endif
690		1103
691	for (i = 0; i < fdchangecnt; ++i)	1104	for (i = 0; i < fdchangecnt; ++i)
692	{	1105	{
693	int fd = fdchanges [i];	1106	int fd = fdchanges [i];
694	ANFD *anfd = anfds + fd;	1107	ANFD *anfd = anfds + fd;
695	ev_io *w;	1108	ev_io *w;
696		1109
697	unsigned char events = 0;	1110	unsigned char o_events = anfd->events;
		1111	unsigned char o_reify = anfd->reify;
698		1112
699	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1113	anfd->reify = 0;
700	events |= (unsigned char)w->events;
701		1114
702	#if EV_SELECT_IS_WINSOCKET	1115	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
703	if (events)
704	{	1116	{
705	unsigned long argp;	1117	anfd->events = 0;
706	#ifdef EV_FD_TO_WIN32_HANDLE	1118
707	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1119	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
708	#else	1120	anfd->events |= (unsigned char)w->events;
709	anfd->handle = _get_osfhandle (fd);	1121
710	#endif	1122	if (o_events != anfd->events)
711	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	1123	o_reify = EV__IOFDSET; /* actually |= */
712	}	1124	}
713	#endif
714		1125
715	{	1126	if (o_reify & EV__IOFDSET)
716	unsigned char o_events = anfd->events;
717	unsigned char o_reify = anfd->reify;
718
719	anfd->reify = 0;
720	anfd->events = events;
721
722	if (o_events != events || o_reify & EV_IOFDSET)
723	backend_modify (EV_A_ fd, o_events, events);	1127	backend_modify (EV_A_ fd, o_events, anfd->events);
724	}
725	}	1128	}
726		1129
727	fdchangecnt = 0;	1130	fdchangecnt = 0;
728	}	1131	}
729		1132
730	void inline_size	1133	/* something about the given fd changed */
		1134	inline_size void
731	fd_change (EV_P_ int fd, int flags)	1135	fd_change (EV_P_ int fd, int flags)
732	{	1136	{
733	unsigned char reify = anfds [fd].reify;	1137	unsigned char reify = anfds [fd].reify;
734	anfds [fd].reify |= flags;	1138	anfds [fd].reify |= flags;
735		1139
…		…
739	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	1143	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
740	fdchanges [fdchangecnt - 1] = fd;	1144	fdchanges [fdchangecnt - 1] = fd;
741	}	1145	}
742	}	1146	}
743		1147
744	void inline_speed	1148	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		1149	inline_speed void ecb_cold
745	fd_kill (EV_P_ int fd)	1150	fd_kill (EV_P_ int fd)
746	{	1151	{
747	ev_io *w;	1152	ev_io *w;
748		1153
749	while ((w = (ev_io *)anfds [fd].head))	1154	while ((w = (ev_io *)anfds [fd].head))
…		…
751	ev_io_stop (EV_A_ w);	1156	ev_io_stop (EV_A_ w);
752	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1157	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
753	}	1158	}
754	}	1159	}
755		1160
756	int inline_size	1161	/* check whether the given fd is actually valid, for error recovery */
		1162	inline_size int ecb_cold
757	fd_valid (int fd)	1163	fd_valid (int fd)
758	{	1164	{
759	#ifdef _WIN32	1165	#ifdef _WIN32
760	return _get_osfhandle (fd) != -1;	1166	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
761	#else	1167	#else
762	return fcntl (fd, F_GETFD) != -1;	1168	return fcntl (fd, F_GETFD) != -1;
763	#endif	1169	#endif
764	}	1170	}
765		1171
766	/* called on EBADF to verify fds */	1172	/* called on EBADF to verify fds */
767	static void noinline	1173	static void noinline ecb_cold
768	fd_ebadf (EV_P)	1174	fd_ebadf (EV_P)
769	{	1175	{
770	int fd;	1176	int fd;
771		1177
772	for (fd = 0; fd < anfdmax; ++fd)	1178	for (fd = 0; fd < anfdmax; ++fd)
773	if (anfds [fd].events)	1179	if (anfds [fd].events)
774	if (!fd_valid (fd) == -1 && errno == EBADF)	1180	if (!fd_valid (fd) && errno == EBADF)
775	fd_kill (EV_A_ fd);	1181	fd_kill (EV_A_ fd);
776	}	1182	}
777		1183
778	/* called on ENOMEM in select/poll to kill some fds and retry */	1184	/* called on ENOMEM in select/poll to kill some fds and retry */
779	static void noinline	1185	static void noinline ecb_cold
780	fd_enomem (EV_P)	1186	fd_enomem (EV_P)
781	{	1187	{
782	int fd;	1188	int fd;
783		1189
784	for (fd = anfdmax; fd--; )	1190	for (fd = anfdmax; fd--; )
785	if (anfds [fd].events)	1191	if (anfds [fd].events)
786	{	1192	{
787	fd_kill (EV_A_ fd);	1193	fd_kill (EV_A_ fd);
788	return;	1194	break;
789	}	1195	}
790	}	1196	}
791		1197
792	/* usually called after fork if backend needs to re-arm all fds from scratch */	1198	/* usually called after fork if backend needs to re-arm all fds from scratch */
793	static void noinline	1199	static void noinline
…		…
797		1203
798	for (fd = 0; fd < anfdmax; ++fd)	1204	for (fd = 0; fd < anfdmax; ++fd)
799	if (anfds [fd].events)	1205	if (anfds [fd].events)
800	{	1206	{
801	anfds [fd].events = 0;	1207	anfds [fd].events = 0;
		1208	anfds [fd].emask = 0;
802	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1209	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
803	}	1210	}
804	}	1211	}
805		1212
		1213	/* used to prepare libev internal fd's */
		1214	/* this is not fork-safe */
		1215	inline_speed void
		1216	fd_intern (int fd)
		1217	{
		1218	#ifdef _WIN32
		1219	unsigned long arg = 1;
		1220	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
		1221	#else
		1222	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1223	fcntl (fd, F_SETFL, O_NONBLOCK);
		1224	#endif
		1225	}
		1226
806	/*****************************************************************************/	1227	/*****************************************************************************/
807		1228
808	/*	1229	/*
809	* the heap functions want a real array index. array index 0 uis guaranteed to not	1230	* the heap functions want a real array index. array index 0 is guaranteed to not
810	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives	1231	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
811	* the branching factor of the d-tree.	1232	* the branching factor of the d-tree.
812	*/	1233	*/
813		1234
814	/*	1235	/*
…		…
823	#define HEAP0 (DHEAP - 1) /* index of first element in heap */	1244	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
824	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)	1245	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
825	#define UPHEAP_DONE(p,k) ((p) == (k))	1246	#define UPHEAP_DONE(p,k) ((p) == (k))
826		1247
827	/* away from the root */	1248	/* away from the root */
828	void inline_speed	1249	inline_speed void
829	downheap (ANHE *heap, int N, int k)	1250	downheap (ANHE *heap, int N, int k)
830	{	1251	{
831	ANHE he = heap [k];	1252	ANHE he = heap [k];
832	ANHE *E = heap + N + HEAP0;	1253	ANHE *E = heap + N + HEAP0;
833		1254
…		…
873	#define HEAP0 1	1294	#define HEAP0 1
874	#define HPARENT(k) ((k) >> 1)	1295	#define HPARENT(k) ((k) >> 1)
875	#define UPHEAP_DONE(p,k) (!(p))	1296	#define UPHEAP_DONE(p,k) (!(p))
876		1297
877	/* away from the root */	1298	/* away from the root */
878	void inline_speed	1299	inline_speed void
879	downheap (ANHE *heap, int N, int k)	1300	downheap (ANHE *heap, int N, int k)
880	{	1301	{
881	ANHE he = heap [k];	1302	ANHE he = heap [k];
882		1303
883	for (;;)	1304	for (;;)
884	{	1305	{
885	int c = k << 1;	1306	int c = k << 1;
886		1307
887	if (c > N + HEAP0 - 1)	1308	if (c >= N + HEAP0)
888	break;	1309	break;
889		1310
890	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])	1311	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
891	? 1 : 0;	1312	? 1 : 0;
892		1313
…		…
903	ev_active (ANHE_w (he)) = k;	1324	ev_active (ANHE_w (he)) = k;
904	}	1325	}
905	#endif	1326	#endif
906		1327
907	/* towards the root */	1328	/* towards the root */
908	void inline_speed	1329	inline_speed void
909	upheap (ANHE *heap, int k)	1330	upheap (ANHE *heap, int k)
910	{	1331	{
911	ANHE he = heap [k];	1332	ANHE he = heap [k];
912		1333
913	for (;;)	1334	for (;;)
…		…
924		1345
925	heap [k] = he;	1346	heap [k] = he;
926	ev_active (ANHE_w (he)) = k;	1347	ev_active (ANHE_w (he)) = k;
927	}	1348	}
928		1349
929	void inline_size	1350	/* move an element suitably so it is in a correct place */
		1351	inline_size void
930	adjustheap (ANHE *heap, int N, int k)	1352	adjustheap (ANHE *heap, int N, int k)
931	{	1353	{
932	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))	1354	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
933	upheap (heap, k);	1355	upheap (heap, k);
934	else	1356	else
935	downheap (heap, N, k);	1357	downheap (heap, N, k);
936	}	1358	}
937		1359
938	/* rebuild the heap: this function is used only once and executed rarely */	1360	/* rebuild the heap: this function is used only once and executed rarely */
939	void inline_size	1361	inline_size void
940	reheap (ANHE *heap, int N)	1362	reheap (ANHE *heap, int N)
941	{	1363	{
942	int i;	1364	int i;
		1365
943	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */	1366	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
944	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */	1367	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
945	for (i = 0; i < N; ++i)	1368	for (i = 0; i < N; ++i)
946	upheap (heap, i + HEAP0);	1369	upheap (heap, i + HEAP0);
947	}	1370	}
948		1371
949	#if EV_VERIFY
950	static void
951	checkheap (ANHE *heap, int N)
952	{
953	int i;
954
955	for (i = HEAP0; i < N + HEAP0; ++i)
956	{
957	assert (("active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
958	assert (("heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
959	assert (("heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
960	}
961	}
962	#endif
963
964	/*****************************************************************************/	1372	/*****************************************************************************/
965		1373
		1374	/* associate signal watchers to a signal signal */
966	typedef struct	1375	typedef struct
967	{	1376	{
		1377	EV_ATOMIC_T pending;
		1378	#if EV_MULTIPLICITY
		1379	EV_P;
		1380	#endif
968	WL head;	1381	WL head;
969	EV_ATOMIC_T gotsig;
970	} ANSIG;	1382	} ANSIG;
971		1383
972	static ANSIG *signals;	1384	static ANSIG signals [EV_NSIG - 1];
973	static int signalmax;
974
975	static EV_ATOMIC_T gotsig;
976
977	void inline_size
978	signals_init (ANSIG *base, int count)
979	{
980	while (count--)
981	{
982	base->head = 0;
983	base->gotsig = 0;
984
985	++base;
986	}
987	}
988		1385
989	/*****************************************************************************/	1386	/*****************************************************************************/
990		1387
991	void inline_speed	1388	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
992	fd_intern (int fd)
993	{
994	#ifdef _WIN32
995	int arg = 1;
996	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
997	#else
998	fcntl (fd, F_SETFD, FD_CLOEXEC);
999	fcntl (fd, F_SETFL, O_NONBLOCK);
1000	#endif
1001	}
1002		1389
1003	static void noinline	1390	static void noinline ecb_cold
1004	evpipe_init (EV_P)	1391	evpipe_init (EV_P)
1005	{	1392	{
1006	if (!ev_is_active (&pipeev))	1393	if (!ev_is_active (&pipe_w))
1007	{	1394	{
1008	#if EV_USE_EVENTFD	1395	# if EV_USE_EVENTFD
		1396	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1397	if (evfd < 0 && errno == EINVAL)
1009	if ((evfd = eventfd (0, 0)) >= 0)	1398	evfd = eventfd (0, 0);
		1399
		1400	if (evfd >= 0)
1010	{	1401	{
1011	evpipe [0] = -1;	1402	evpipe [0] = -1;
1012	fd_intern (evfd);	1403	fd_intern (evfd); /* doing it twice doesn't hurt */
1013	ev_io_set (&pipeev, evfd, EV_READ);	1404	ev_io_set (&pipe_w, evfd, EV_READ);
1014	}	1405	}
1015	else	1406	else
1016	#endif	1407	# endif
1017	{	1408	{
1018	while (pipe (evpipe))	1409	while (pipe (evpipe))
1019	syserr ("(libev) error creating signal/async pipe");	1410	ev_syserr ("(libev) error creating signal/async pipe");
1020		1411
1021	fd_intern (evpipe [0]);	1412	fd_intern (evpipe [0]);
1022	fd_intern (evpipe [1]);	1413	fd_intern (evpipe [1]);
1023	ev_io_set (&pipeev, evpipe [0], EV_READ);	1414	ev_io_set (&pipe_w, evpipe [0], EV_READ);
1024	}	1415	}
1025		1416
1026	ev_io_start (EV_A_ &pipeev);	1417	ev_io_start (EV_A_ &pipe_w);
1027	ev_unref (EV_A); /* watcher should not keep loop alive */	1418	ev_unref (EV_A); /* watcher should not keep loop alive */
1028	}	1419	}
1029	}	1420	}
1030		1421
1031	void inline_size	1422	inline_speed void
1032	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	1423	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
1033	{	1424	{
1034	if (!*flag)	1425	if (!*flag)
1035	{	1426	{
1036	int old_errno = errno; /* save errno because write might clobber it */
1037
1038	*flag = 1;	1427	*flag = 1;
1039		1428
		1429	pipe_write_skipped = 1;
		1430
		1431	if (pipe_write_wanted)
		1432	{
		1433	int old_errno;
		1434
		1435	pipe_write_skipped = 0;
		1436
		1437	old_errno = errno; /* save errno because write will clobber it */
		1438
		1439	#if EV_USE_EVENTFD
		1440	if (evfd >= 0)
		1441	{
		1442	uint64_t counter = 1;
		1443	write (evfd, &counter, sizeof (uint64_t));
		1444	}
		1445	else
		1446	#endif
		1447	{
		1448	/* win32 people keep sending patches that change this write() to send() */
		1449	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1450	/* so when you think this write should be a send instead, please find out */
		1451	/* where your send() is from - it's definitely not the microsoft send, and */
		1452	/* tell me. thank you. */
		1453	write (evpipe [1], &(evpipe [1]), 1);
		1454	}
		1455
		1456	errno = old_errno;
		1457	}
		1458	}
		1459	}
		1460
		1461	/* called whenever the libev signal pipe */
		1462	/* got some events (signal, async) */
		1463	static void
		1464	pipecb (EV_P_ ev_io *iow, int revents)
		1465	{
		1466	int i;
		1467
		1468	if (revents & EV_READ)
		1469	{
1040	#if EV_USE_EVENTFD	1470	#if EV_USE_EVENTFD
1041	if (evfd >= 0)	1471	if (evfd >= 0)
1042	{	1472	{
1043	uint64_t counter = 1;	1473	uint64_t counter;
1044	write (evfd, &counter, sizeof (uint64_t));	1474	read (evfd, &counter, sizeof (uint64_t));
1045	}	1475	}
1046	else	1476	else
1047	#endif	1477	#endif
1048	write (evpipe [1], &old_errno, 1);	1478	{
1049
1050	errno = old_errno;
1051	}
1052	}
1053
1054	static void
1055	pipecb (EV_P_ ev_io *iow, int revents)
1056	{
1057	#if EV_USE_EVENTFD
1058	if (evfd >= 0)
1059	{
1060	uint64_t counter;
1061	read (evfd, &counter, sizeof (uint64_t));
1062	}
1063	else
1064	#endif
1065	{
1066	char dummy;	1479	char dummy;
		1480	/* see discussion in evpipe_write when you think this read should be recv in win32 */
1067	read (evpipe [0], &dummy, 1);	1481	read (evpipe [0], &dummy, 1);
		1482	}
		1483	}
		1484
		1485	pipe_write_skipped = 0;
		1486
		1487	#if EV_SIGNAL_ENABLE
		1488	if (sig_pending)
1068	}	1489	{
		1490	sig_pending = 0;
1069		1491
1070	if (gotsig && ev_is_default_loop (EV_A))	1492	for (i = EV_NSIG - 1; i--; )
1071	{	1493	if (expect_false (signals [i].pending))
1072	int signum;
1073	gotsig = 0;
1074
1075	for (signum = signalmax; signum--; )
1076	if (signals [signum].gotsig)
1077	ev_feed_signal_event (EV_A_ signum + 1);	1494	ev_feed_signal_event (EV_A_ i + 1);
1078	}	1495	}
		1496	#endif
1079		1497
1080	#if EV_ASYNC_ENABLE	1498	#if EV_ASYNC_ENABLE
1081	if (gotasync)	1499	if (async_pending)
1082	{	1500	{
1083	int i;	1501	async_pending = 0;
1084	gotasync = 0;
1085		1502
1086	for (i = asynccnt; i--; )	1503	for (i = asynccnt; i--; )
1087	if (asyncs [i]->sent)	1504	if (asyncs [i]->sent)
1088	{	1505	{
1089	asyncs [i]->sent = 0;	1506	asyncs [i]->sent = 0;
…		…
1093	#endif	1510	#endif
1094	}	1511	}
1095		1512
1096	/*****************************************************************************/	1513	/*****************************************************************************/
1097		1514
		1515	void
		1516	ev_feed_signal (int signum)
		1517	{
		1518	#if EV_MULTIPLICITY
		1519	EV_P = signals [signum - 1].loop;
		1520
		1521	if (!EV_A)
		1522	return;
		1523	#endif
		1524
		1525	if (!ev_active (&pipe_w))
		1526	return;
		1527
		1528	signals [signum - 1].pending = 1;
		1529	evpipe_write (EV_A_ &sig_pending);
		1530	}
		1531
1098	static void	1532	static void
1099	ev_sighandler (int signum)	1533	ev_sighandler (int signum)
1100	{	1534	{
1101	#if EV_MULTIPLICITY
1102	struct ev_loop *loop = &default_loop_struct;
1103	#endif
1104
1105	#if _WIN32	1535	#ifdef _WIN32
1106	signal (signum, ev_sighandler);	1536	signal (signum, ev_sighandler);
1107	#endif	1537	#endif
1108		1538
1109	signals [signum - 1].gotsig = 1;	1539	ev_feed_signal (signum);
1110	evpipe_write (EV_A_ &gotsig);
1111	}	1540	}
1112		1541
1113	void noinline	1542	void noinline
1114	ev_feed_signal_event (EV_P_ int signum)	1543	ev_feed_signal_event (EV_P_ int signum)
1115	{	1544	{
1116	WL w;	1545	WL w;
1117		1546
		1547	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1548	return;
		1549
		1550	--signum;
		1551
1118	#if EV_MULTIPLICITY	1552	#if EV_MULTIPLICITY
1119	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1553	/* it is permissible to try to feed a signal to the wrong loop */
1120	#endif	1554	/* or, likely more useful, feeding a signal nobody is waiting for */
1121		1555
1122	--signum;	1556	if (expect_false (signals [signum].loop != EV_A))
1123
1124	if (signum < 0 || signum >= signalmax)
1125	return;	1557	return;
		1558	#endif
1126		1559
1127	signals [signum].gotsig = 0;	1560	signals [signum].pending = 0;
1128		1561
1129	for (w = signals [signum].head; w; w = w->next)	1562	for (w = signals [signum].head; w; w = w->next)
1130	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1563	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
1131	}	1564	}
1132		1565
		1566	#if EV_USE_SIGNALFD
		1567	static void
		1568	sigfdcb (EV_P_ ev_io *iow, int revents)
		1569	{
		1570	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1571
		1572	for (;;)
		1573	{
		1574	ssize_t res = read (sigfd, si, sizeof (si));
		1575
		1576	/* not ISO-C, as res might be -1, but works with SuS */
		1577	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1578	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1579
		1580	if (res < (ssize_t)sizeof (si))
		1581	break;
		1582	}
		1583	}
		1584	#endif
		1585
		1586	#endif
		1587
1133	/*****************************************************************************/	1588	/*****************************************************************************/
1134		1589
		1590	#if EV_CHILD_ENABLE
1135	static WL childs [EV_PID_HASHSIZE];	1591	static WL childs [EV_PID_HASHSIZE];
1136
1137	#ifndef _WIN32
1138		1592
1139	static ev_signal childev;	1593	static ev_signal childev;
1140		1594
1141	#ifndef WIFCONTINUED	1595	#ifndef WIFCONTINUED
1142	# define WIFCONTINUED(status) 0	1596	# define WIFCONTINUED(status) 0
1143	#endif	1597	#endif
1144		1598
1145	void inline_speed	1599	/* handle a single child status event */
		1600	inline_speed void
1146	child_reap (EV_P_ int chain, int pid, int status)	1601	child_reap (EV_P_ int chain, int pid, int status)
1147	{	1602	{
1148	ev_child *w;	1603	ev_child *w;
1149	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1604	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
1150		1605
1151	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1606	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
1152	{	1607	{
1153	if ((w->pid == pid || !w->pid)	1608	if ((w->pid == pid || !w->pid)
1154	&& (!traced || (w->flags & 1)))	1609	&& (!traced || (w->flags & 1)))
1155	{	1610	{
1156	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	1611	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
1163		1618
1164	#ifndef WCONTINUED	1619	#ifndef WCONTINUED
1165	# define WCONTINUED 0	1620	# define WCONTINUED 0
1166	#endif	1621	#endif
1167		1622
		1623	/* called on sigchld etc., calls waitpid */
1168	static void	1624	static void
1169	childcb (EV_P_ ev_signal *sw, int revents)	1625	childcb (EV_P_ ev_signal *sw, int revents)
1170	{	1626	{
1171	int pid, status;	1627	int pid, status;
1172		1628
…		…
1180	/* make sure we are called again until all children have been reaped */	1636	/* make sure we are called again until all children have been reaped */
1181	/* we need to do it this way so that the callback gets called before we continue */	1637	/* we need to do it this way so that the callback gets called before we continue */
1182	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1638	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
1183		1639
1184	child_reap (EV_A_ pid, pid, status);	1640	child_reap (EV_A_ pid, pid, status);
1185	if (EV_PID_HASHSIZE > 1)	1641	if ((EV_PID_HASHSIZE) > 1)
1186	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1642	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
1187	}	1643	}
1188		1644
1189	#endif	1645	#endif
1190		1646
1191	/*****************************************************************************/	1647	/*****************************************************************************/
1192		1648
		1649	#if EV_USE_IOCP
		1650	# include "ev_iocp.c"
		1651	#endif
1193	#if EV_USE_PORT	1652	#if EV_USE_PORT
1194	# include "ev_port.c"	1653	# include "ev_port.c"
1195	#endif	1654	#endif
1196	#if EV_USE_KQUEUE	1655	#if EV_USE_KQUEUE
1197	# include "ev_kqueue.c"	1656	# include "ev_kqueue.c"
…		…
1204	#endif	1663	#endif
1205	#if EV_USE_SELECT	1664	#if EV_USE_SELECT
1206	# include "ev_select.c"	1665	# include "ev_select.c"
1207	#endif	1666	#endif
1208		1667
1209	int	1668	int ecb_cold
1210	ev_version_major (void)	1669	ev_version_major (void)
1211	{	1670	{
1212	return EV_VERSION_MAJOR;	1671	return EV_VERSION_MAJOR;
1213	}	1672	}
1214		1673
1215	int	1674	int ecb_cold
1216	ev_version_minor (void)	1675	ev_version_minor (void)
1217	{	1676	{
1218	return EV_VERSION_MINOR;	1677	return EV_VERSION_MINOR;
1219	}	1678	}
1220		1679
1221	/* return true if we are running with elevated privileges and should ignore env variables */	1680	/* return true if we are running with elevated privileges and should ignore env variables */
1222	int inline_size	1681	int inline_size ecb_cold
1223	enable_secure (void)	1682	enable_secure (void)
1224	{	1683	{
1225	#ifdef _WIN32	1684	#ifdef _WIN32
1226	return 0;	1685	return 0;
1227	#else	1686	#else
1228	return getuid () != geteuid ()	1687	return getuid () != geteuid ()
1229	|| getgid () != getegid ();	1688	|| getgid () != getegid ();
1230	#endif	1689	#endif
1231	}	1690	}
1232		1691
1233	unsigned int	1692	unsigned int ecb_cold
1234	ev_supported_backends (void)	1693	ev_supported_backends (void)
1235	{	1694	{
1236	unsigned int flags = 0;	1695	unsigned int flags = 0;
1237		1696
1238	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1697	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
1242	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1701	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1243		1702
1244	return flags;	1703	return flags;
1245	}	1704	}
1246		1705
1247	unsigned int	1706	unsigned int ecb_cold
1248	ev_recommended_backends (void)	1707	ev_recommended_backends (void)
1249	{	1708	{
1250	unsigned int flags = ev_supported_backends ();	1709	unsigned int flags = ev_supported_backends ();
1251		1710
1252	#ifndef __NetBSD__	1711	#ifndef __NetBSD__
1253	/* kqueue is borked on everything but netbsd apparently */	1712	/* kqueue is borked on everything but netbsd apparently */
1254	/* it usually doesn't work correctly on anything but sockets and pipes */	1713	/* it usually doesn't work correctly on anything but sockets and pipes */
1255	flags &= ~EVBACKEND_KQUEUE;	1714	flags &= ~EVBACKEND_KQUEUE;
1256	#endif	1715	#endif
1257	#ifdef __APPLE__	1716	#ifdef __APPLE__
1258	// flags &= ~EVBACKEND_KQUEUE; for documentation	1717	/* only select works correctly on that "unix-certified" platform */
1259	flags &= ~EVBACKEND_POLL;	1718	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1719	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		1720	#endif
		1721	#ifdef __FreeBSD__
		1722	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1260	#endif	1723	#endif
1261		1724
1262	return flags;	1725	return flags;
1263	}	1726	}
1264		1727
1265	unsigned int	1728	unsigned int ecb_cold
1266	ev_embeddable_backends (void)	1729	ev_embeddable_backends (void)
1267	{	1730	{
1268	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1731	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1269		1732
1270	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1733	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1271	/* please fix it and tell me how to detect the fix */	1734	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1272	flags &= ~EVBACKEND_EPOLL;	1735	flags &= ~EVBACKEND_EPOLL;
1273		1736
1274	return flags;	1737	return flags;
1275	}	1738	}
1276		1739
1277	unsigned int	1740	unsigned int
1278	ev_backend (EV_P)	1741	ev_backend (EV_P)
1279	{	1742	{
1280	return backend;	1743	return backend;
1281	}	1744	}
1282		1745
		1746	#if EV_FEATURE_API
1283	unsigned int	1747	unsigned int
1284	ev_loop_count (EV_P)	1748	ev_iteration (EV_P)
1285	{	1749	{
1286	return loop_count;	1750	return loop_count;
		1751	}
		1752
		1753	unsigned int
		1754	ev_depth (EV_P)
		1755	{
		1756	return loop_depth;
1287	}	1757	}
1288		1758
1289	void	1759	void
1290	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1760	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1291	{	1761	{
…		…
1296	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1766	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1297	{	1767	{
1298	timeout_blocktime = interval;	1768	timeout_blocktime = interval;
1299	}	1769	}
1300		1770
		1771	void
		1772	ev_set_userdata (EV_P_ void *data)
		1773	{
		1774	userdata = data;
		1775	}
		1776
		1777	void *
		1778	ev_userdata (EV_P)
		1779	{
		1780	return userdata;
		1781	}
		1782
		1783	void
		1784	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1785	{
		1786	invoke_cb = invoke_pending_cb;
		1787	}
		1788
		1789	void
		1790	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1791	{
		1792	release_cb = release;
		1793	acquire_cb = acquire;
		1794	}
		1795	#endif
		1796
		1797	/* initialise a loop structure, must be zero-initialised */
1301	static void noinline	1798	static void noinline ecb_cold
1302	loop_init (EV_P_ unsigned int flags)	1799	loop_init (EV_P_ unsigned int flags)
1303	{	1800	{
1304	if (!backend)	1801	if (!backend)
1305	{	1802	{
		1803	origflags = flags;
		1804
		1805	#if EV_USE_REALTIME
		1806	if (!have_realtime)
		1807	{
		1808	struct timespec ts;
		1809
		1810	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1811	have_realtime = 1;
		1812	}
		1813	#endif
		1814
1306	#if EV_USE_MONOTONIC	1815	#if EV_USE_MONOTONIC
		1816	if (!have_monotonic)
1307	{	1817	{
1308	struct timespec ts;	1818	struct timespec ts;
		1819
1309	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1820	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1310	have_monotonic = 1;	1821	have_monotonic = 1;
1311	}	1822	}
1312	#endif
1313
1314	ev_rt_now = ev_time ();
1315	mn_now = get_clock ();
1316	now_floor = mn_now;
1317	rtmn_diff = ev_rt_now - mn_now;
1318
1319	io_blocktime = 0.;
1320	timeout_blocktime = 0.;
1321	backend = 0;
1322	backend_fd = -1;
1323	gotasync = 0;
1324	#if EV_USE_INOTIFY
1325	fs_fd = -2;
1326	#endif	1823	#endif
1327		1824
1328	/* pid check not overridable via env */	1825	/* pid check not overridable via env */
1329	#ifndef _WIN32	1826	#ifndef _WIN32
1330	if (flags & EVFLAG_FORKCHECK)	1827	if (flags & EVFLAG_FORKCHECK)
…		…
1334	if (!(flags & EVFLAG_NOENV)	1831	if (!(flags & EVFLAG_NOENV)
1335	&& !enable_secure ()	1832	&& !enable_secure ()
1336	&& getenv ("LIBEV_FLAGS"))	1833	&& getenv ("LIBEV_FLAGS"))
1337	flags = atoi (getenv ("LIBEV_FLAGS"));	1834	flags = atoi (getenv ("LIBEV_FLAGS"));
1338		1835
1339	if (!(flags & 0x0000ffffU))	1836	ev_rt_now = ev_time ();
		1837	mn_now = get_clock ();
		1838	now_floor = mn_now;
		1839	rtmn_diff = ev_rt_now - mn_now;
		1840	#if EV_FEATURE_API
		1841	invoke_cb = ev_invoke_pending;
		1842	#endif
		1843
		1844	io_blocktime = 0.;
		1845	timeout_blocktime = 0.;
		1846	backend = 0;
		1847	backend_fd = -1;
		1848	sig_pending = 0;
		1849	#if EV_ASYNC_ENABLE
		1850	async_pending = 0;
		1851	#endif
		1852	pipe_write_skipped = 0;
		1853	pipe_write_wanted = 0;
		1854	#if EV_USE_INOTIFY
		1855	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		1856	#endif
		1857	#if EV_USE_SIGNALFD
		1858	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		1859	#endif
		1860
		1861	if (!(flags & EVBACKEND_MASK))
1340	flags |= ev_recommended_backends ();	1862	flags |= ev_recommended_backends ();
1341		1863
		1864	#if EV_USE_IOCP
		1865	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1866	#endif
1342	#if EV_USE_PORT	1867	#if EV_USE_PORT
1343	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1868	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1344	#endif	1869	#endif
1345	#if EV_USE_KQUEUE	1870	#if EV_USE_KQUEUE
1346	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1871	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1353	#endif	1878	#endif
1354	#if EV_USE_SELECT	1879	#if EV_USE_SELECT
1355	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1880	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1356	#endif	1881	#endif
1357		1882
		1883	ev_prepare_init (&pending_w, pendingcb);
		1884
		1885	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1358	ev_init (&pipeev, pipecb);	1886	ev_init (&pipe_w, pipecb);
1359	ev_set_priority (&pipeev, EV_MAXPRI);	1887	ev_set_priority (&pipe_w, EV_MAXPRI);
		1888	#endif
1360	}	1889	}
1361	}	1890	}
1362		1891
1363	static void noinline	1892	/* free up a loop structure */
		1893	void ecb_cold
1364	loop_destroy (EV_P)	1894	ev_loop_destroy (EV_P)
1365	{	1895	{
1366	int i;	1896	int i;
1367		1897
		1898	#if EV_MULTIPLICITY
		1899	/* mimic free (0) */
		1900	if (!EV_A)
		1901	return;
		1902	#endif
		1903
		1904	#if EV_CLEANUP_ENABLE
		1905	/* queue cleanup watchers (and execute them) */
		1906	if (expect_false (cleanupcnt))
		1907	{
		1908	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1909	EV_INVOKE_PENDING;
		1910	}
		1911	#endif
		1912
		1913	#if EV_CHILD_ENABLE
		1914	if (ev_is_active (&childev))
		1915	{
		1916	ev_ref (EV_A); /* child watcher */
		1917	ev_signal_stop (EV_A_ &childev);
		1918	}
		1919	#endif
		1920
1368	if (ev_is_active (&pipeev))	1921	if (ev_is_active (&pipe_w))
1369	{	1922	{
1370	ev_ref (EV_A); /* signal watcher */	1923	/*ev_ref (EV_A);*/
1371	ev_io_stop (EV_A_ &pipeev);	1924	/*ev_io_stop (EV_A_ &pipe_w);*/
1372		1925
1373	#if EV_USE_EVENTFD	1926	#if EV_USE_EVENTFD
1374	if (evfd >= 0)	1927	if (evfd >= 0)
1375	close (evfd);	1928	close (evfd);
1376	#endif	1929	#endif
1377		1930
1378	if (evpipe [0] >= 0)	1931	if (evpipe [0] >= 0)
1379	{	1932	{
1380	close (evpipe [0]);	1933	EV_WIN32_CLOSE_FD (evpipe [0]);
1381	close (evpipe [1]);	1934	EV_WIN32_CLOSE_FD (evpipe [1]);
1382	}	1935	}
1383	}	1936	}
		1937
		1938	#if EV_USE_SIGNALFD
		1939	if (ev_is_active (&sigfd_w))
		1940	close (sigfd);
		1941	#endif
1384		1942
1385	#if EV_USE_INOTIFY	1943	#if EV_USE_INOTIFY
1386	if (fs_fd >= 0)	1944	if (fs_fd >= 0)
1387	close (fs_fd);	1945	close (fs_fd);
1388	#endif	1946	#endif
1389		1947
1390	if (backend_fd >= 0)	1948	if (backend_fd >= 0)
1391	close (backend_fd);	1949	close (backend_fd);
1392		1950
		1951	#if EV_USE_IOCP
		1952	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1953	#endif
1393	#if EV_USE_PORT	1954	#if EV_USE_PORT
1394	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1955	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1395	#endif	1956	#endif
1396	#if EV_USE_KQUEUE	1957	#if EV_USE_KQUEUE
1397	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1958	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1412	#if EV_IDLE_ENABLE	1973	#if EV_IDLE_ENABLE
1413	array_free (idle, [i]);	1974	array_free (idle, [i]);
1414	#endif	1975	#endif
1415	}	1976	}
1416		1977
1417	ev_free (anfds); anfdmax = 0;	1978	ev_free (anfds); anfds = 0; anfdmax = 0;
1418		1979
1419	/* have to use the microsoft-never-gets-it-right macro */	1980	/* have to use the microsoft-never-gets-it-right macro */
		1981	array_free (rfeed, EMPTY);
1420	array_free (fdchange, EMPTY);	1982	array_free (fdchange, EMPTY);
1421	array_free (timer, EMPTY);	1983	array_free (timer, EMPTY);
1422	#if EV_PERIODIC_ENABLE	1984	#if EV_PERIODIC_ENABLE
1423	array_free (periodic, EMPTY);	1985	array_free (periodic, EMPTY);
1424	#endif	1986	#endif
1425	#if EV_FORK_ENABLE	1987	#if EV_FORK_ENABLE
1426	array_free (fork, EMPTY);	1988	array_free (fork, EMPTY);
1427	#endif	1989	#endif
		1990	#if EV_CLEANUP_ENABLE
		1991	array_free (cleanup, EMPTY);
		1992	#endif
1428	array_free (prepare, EMPTY);	1993	array_free (prepare, EMPTY);
1429	array_free (check, EMPTY);	1994	array_free (check, EMPTY);
1430	#if EV_ASYNC_ENABLE	1995	#if EV_ASYNC_ENABLE
1431	array_free (async, EMPTY);	1996	array_free (async, EMPTY);
1432	#endif	1997	#endif
1433		1998
1434	backend = 0;	1999	backend = 0;
		2000
		2001	#if EV_MULTIPLICITY
		2002	if (ev_is_default_loop (EV_A))
		2003	#endif
		2004	ev_default_loop_ptr = 0;
		2005	#if EV_MULTIPLICITY
		2006	else
		2007	ev_free (EV_A);
		2008	#endif
1435	}	2009	}
1436		2010
1437	#if EV_USE_INOTIFY	2011	#if EV_USE_INOTIFY
1438	void inline_size infy_fork (EV_P);	2012	inline_size void infy_fork (EV_P);
1439	#endif	2013	#endif
1440		2014
1441	void inline_size	2015	inline_size void
1442	loop_fork (EV_P)	2016	loop_fork (EV_P)
1443	{	2017	{
1444	#if EV_USE_PORT	2018	#if EV_USE_PORT
1445	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	2019	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1446	#endif	2020	#endif
…		…
1452	#endif	2026	#endif
1453	#if EV_USE_INOTIFY	2027	#if EV_USE_INOTIFY
1454	infy_fork (EV_A);	2028	infy_fork (EV_A);
1455	#endif	2029	#endif
1456		2030
1457	if (ev_is_active (&pipeev))	2031	if (ev_is_active (&pipe_w))
1458	{	2032	{
1459	/* this "locks" the handlers against writing to the pipe */	2033	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1460	/* while we modify the fd vars */
1461	gotsig = 1;
1462	#if EV_ASYNC_ENABLE
1463	gotasync = 1;
1464	#endif
1465		2034
1466	ev_ref (EV_A);	2035	ev_ref (EV_A);
1467	ev_io_stop (EV_A_ &pipeev);	2036	ev_io_stop (EV_A_ &pipe_w);
1468		2037
1469	#if EV_USE_EVENTFD	2038	#if EV_USE_EVENTFD
1470	if (evfd >= 0)	2039	if (evfd >= 0)
1471	close (evfd);	2040	close (evfd);
1472	#endif	2041	#endif
1473		2042
1474	if (evpipe [0] >= 0)	2043	if (evpipe [0] >= 0)
1475	{	2044	{
1476	close (evpipe [0]);	2045	EV_WIN32_CLOSE_FD (evpipe [0]);
1477	close (evpipe [1]);	2046	EV_WIN32_CLOSE_FD (evpipe [1]);
1478	}	2047	}
1479		2048
		2049	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1480	evpipe_init (EV_A);	2050	evpipe_init (EV_A);
1481	/* now iterate over everything, in case we missed something */	2051	/* now iterate over everything, in case we missed something */
1482	pipecb (EV_A_ &pipeev, EV_READ);	2052	pipecb (EV_A_ &pipe_w, EV_READ);
		2053	#endif
1483	}	2054	}
1484		2055
1485	postfork = 0;	2056	postfork = 0;
1486	}	2057	}
1487		2058
1488	#if EV_MULTIPLICITY	2059	#if EV_MULTIPLICITY
		2060
1489	struct ev_loop *	2061	struct ev_loop * ecb_cold
1490	ev_loop_new (unsigned int flags)	2062	ev_loop_new (unsigned int flags)
1491	{	2063	{
1492	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2064	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1493		2065
1494	memset (loop, 0, sizeof (struct ev_loop));	2066	memset (EV_A, 0, sizeof (struct ev_loop));
1495
1496	loop_init (EV_A_ flags);	2067	loop_init (EV_A_ flags);
1497		2068
1498	if (ev_backend (EV_A))	2069	if (ev_backend (EV_A))
1499	return loop;	2070	return EV_A;
1500		2071
		2072	ev_free (EV_A);
1501	return 0;	2073	return 0;
1502	}	2074	}
1503		2075
1504	void	2076	#endif /* multiplicity */
1505	ev_loop_destroy (EV_P)
1506	{
1507	loop_destroy (EV_A);
1508	ev_free (loop);
1509	}
1510
1511	void
1512	ev_loop_fork (EV_P)
1513	{
1514	postfork = 1; /* must be in line with ev_default_fork */
1515	}
1516		2077
1517	#if EV_VERIFY	2078	#if EV_VERIFY
1518	static void	2079	static void noinline ecb_cold
		2080	verify_watcher (EV_P_ W w)
		2081	{
		2082	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		2083
		2084	if (w->pending)
		2085	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		2086	}
		2087
		2088	static void noinline ecb_cold
		2089	verify_heap (EV_P_ ANHE *heap, int N)
		2090	{
		2091	int i;
		2092
		2093	for (i = HEAP0; i < N + HEAP0; ++i)
		2094	{
		2095	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		2096	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		2097	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		2098
		2099	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		2100	}
		2101	}
		2102
		2103	static void noinline ecb_cold
1519	array_check (W **ws, int cnt)	2104	array_verify (EV_P_ W *ws, int cnt)
1520	{	2105	{
1521	while (cnt--)	2106	while (cnt--)
		2107	{
1522	assert (("active index mismatch", ev_active (ws [cnt]) == cnt + 1));	2108	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		2109	verify_watcher (EV_A_ ws [cnt]);
		2110	}
1523	}	2111	}
		2112	#endif
1524		2113
1525	static void	2114	#if EV_FEATURE_API
		2115	void ecb_cold
1526	ev_loop_verify (EV_P)	2116	ev_verify (EV_P)
1527	{	2117	{
		2118	#if EV_VERIFY
1528	int i;	2119	int i;
		2120	WL w;
1529		2121
		2122	assert (activecnt >= -1);
		2123
		2124	assert (fdchangemax >= fdchangecnt);
		2125	for (i = 0; i < fdchangecnt; ++i)
		2126	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		2127
		2128	assert (anfdmax >= 0);
		2129	for (i = 0; i < anfdmax; ++i)
		2130	for (w = anfds [i].head; w; w = w->next)
		2131	{
		2132	verify_watcher (EV_A_ (W)w);
		2133	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		2134	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		2135	}
		2136
		2137	assert (timermax >= timercnt);
1530	checkheap (timers, timercnt);	2138	verify_heap (EV_A_ timers, timercnt);
		2139
1531	#if EV_PERIODIC_ENABLE	2140	#if EV_PERIODIC_ENABLE
		2141	assert (periodicmax >= periodiccnt);
1532	checkheap (periodics, periodiccnt);	2142	verify_heap (EV_A_ periodics, periodiccnt);
1533	#endif	2143	#endif
1534		2144
		2145	for (i = NUMPRI; i--; )
		2146	{
		2147	assert (pendingmax [i] >= pendingcnt [i]);
1535	#if EV_IDLE_ENABLE	2148	#if EV_IDLE_ENABLE
1536	for (i = NUMPRI; i--; )	2149	assert (idleall >= 0);
		2150	assert (idlemax [i] >= idlecnt [i]);
1537	array_check ((W **)idles [i], idlecnt [i]);	2151	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
1538	#endif	2152	#endif
		2153	}
		2154
1539	#if EV_FORK_ENABLE	2155	#if EV_FORK_ENABLE
		2156	assert (forkmax >= forkcnt);
1540	array_check ((W **)forks, forkcnt);	2157	array_verify (EV_A_ (W *)forks, forkcnt);
1541	#endif	2158	#endif
1542	array_check ((W **)prepares, preparecnt);	2159
1543	array_check ((W **)checks, checkcnt);	2160	#if EV_CLEANUP_ENABLE
		2161	assert (cleanupmax >= cleanupcnt);
		2162	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2163	#endif
		2164
1544	#if EV_ASYNC_ENABLE	2165	#if EV_ASYNC_ENABLE
		2166	assert (asyncmax >= asynccnt);
1545	array_check ((W **)asyncs, asynccnt);	2167	array_verify (EV_A_ (W *)asyncs, asynccnt);
		2168	#endif
		2169
		2170	#if EV_PREPARE_ENABLE
		2171	assert (preparemax >= preparecnt);
		2172	array_verify (EV_A_ (W *)prepares, preparecnt);
		2173	#endif
		2174
		2175	#if EV_CHECK_ENABLE
		2176	assert (checkmax >= checkcnt);
		2177	array_verify (EV_A_ (W *)checks, checkcnt);
		2178	#endif
		2179
		2180	# if 0
		2181	#if EV_CHILD_ENABLE
		2182	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		2183	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		2184	#endif
1546	#endif	2185	# endif
1547	}
1548	#endif	2186	#endif
1549		2187	}
1550	#endif	2188	#endif
1551		2189
1552	#if EV_MULTIPLICITY	2190	#if EV_MULTIPLICITY
1553	struct ev_loop *	2191	struct ev_loop * ecb_cold
1554	ev_default_loop_init (unsigned int flags)
1555	#else	2192	#else
1556	int	2193	int
		2194	#endif
1557	ev_default_loop (unsigned int flags)	2195	ev_default_loop (unsigned int flags)
1558	#endif
1559	{	2196	{
1560	if (!ev_default_loop_ptr)	2197	if (!ev_default_loop_ptr)
1561	{	2198	{
1562	#if EV_MULTIPLICITY	2199	#if EV_MULTIPLICITY
1563	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2200	EV_P = ev_default_loop_ptr = &default_loop_struct;
1564	#else	2201	#else
1565	ev_default_loop_ptr = 1;	2202	ev_default_loop_ptr = 1;
1566	#endif	2203	#endif
1567		2204
1568	loop_init (EV_A_ flags);	2205	loop_init (EV_A_ flags);
1569		2206
1570	if (ev_backend (EV_A))	2207	if (ev_backend (EV_A))
1571	{	2208	{
1572	#ifndef _WIN32	2209	#if EV_CHILD_ENABLE
1573	ev_signal_init (&childev, childcb, SIGCHLD);	2210	ev_signal_init (&childev, childcb, SIGCHLD);
1574	ev_set_priority (&childev, EV_MAXPRI);	2211	ev_set_priority (&childev, EV_MAXPRI);
1575	ev_signal_start (EV_A_ &childev);	2212	ev_signal_start (EV_A_ &childev);
1576	ev_unref (EV_A); /* child watcher should not keep loop alive */	2213	ev_unref (EV_A); /* child watcher should not keep loop alive */
1577	#endif	2214	#endif
…		…
1582		2219
1583	return ev_default_loop_ptr;	2220	return ev_default_loop_ptr;
1584	}	2221	}
1585		2222
1586	void	2223	void
1587	ev_default_destroy (void)	2224	ev_loop_fork (EV_P)
1588	{	2225	{
1589	#if EV_MULTIPLICITY
1590	struct ev_loop *loop = ev_default_loop_ptr;
1591	#endif
1592
1593	#ifndef _WIN32
1594	ev_ref (EV_A); /* child watcher */
1595	ev_signal_stop (EV_A_ &childev);
1596	#endif
1597
1598	loop_destroy (EV_A);
1599	}
1600
1601	void
1602	ev_default_fork (void)
1603	{
1604	#if EV_MULTIPLICITY
1605	struct ev_loop *loop = ev_default_loop_ptr;
1606	#endif
1607
1608	if (backend)
1609	postfork = 1; /* must be in line with ev_loop_fork */	2226	postfork = 1; /* must be in line with ev_default_fork */
1610	}	2227	}
1611		2228
1612	/*****************************************************************************/	2229	/*****************************************************************************/
1613		2230
1614	void	2231	void
1615	ev_invoke (EV_P_ void *w, int revents)	2232	ev_invoke (EV_P_ void *w, int revents)
1616	{	2233	{
1617	EV_CB_INVOKE ((W)w, revents);	2234	EV_CB_INVOKE ((W)w, revents);
1618	}	2235	}
1619		2236
1620	void inline_speed	2237	unsigned int
1621	call_pending (EV_P)	2238	ev_pending_count (EV_P)
1622	{	2239	{
1623	int pri;	2240	int pri;
		2241	unsigned int count = 0;
1624		2242
1625	EV_FREQUENT_CHECK;	2243	for (pri = NUMPRI; pri--; )
		2244	count += pendingcnt [pri];
		2245
		2246	return count;
		2247	}
		2248
		2249	void noinline
		2250	ev_invoke_pending (EV_P)
		2251	{
		2252	int pri;
1626		2253
1627	for (pri = NUMPRI; pri--; )	2254	for (pri = NUMPRI; pri--; )
1628	while (pendingcnt [pri])	2255	while (pendingcnt [pri])
1629	{	2256	{
1630	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2257	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1631		2258
1632	if (expect_true (p->w))
1633	{
1634	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1635
1636	p->w->pending = 0;	2259	p->w->pending = 0;
1637	EV_CB_INVOKE (p->w, p->events);	2260	EV_CB_INVOKE (p->w, p->events);
1638	}	2261	EV_FREQUENT_CHECK;
1639	}	2262	}
1640
1641	EV_FREQUENT_CHECK;
1642	}	2263	}
1643		2264
1644	#if EV_IDLE_ENABLE	2265	#if EV_IDLE_ENABLE
1645	void inline_size	2266	/* make idle watchers pending. this handles the "call-idle */
		2267	/* only when higher priorities are idle" logic */
		2268	inline_size void
1646	idle_reify (EV_P)	2269	idle_reify (EV_P)
1647	{	2270	{
1648	if (expect_false (idleall))	2271	if (expect_false (idleall))
1649	{	2272	{
1650	int pri;	2273	int pri;
…		…
1662	}	2285	}
1663	}	2286	}
1664	}	2287	}
1665	#endif	2288	#endif
1666		2289
1667	void inline_size	2290	/* make timers pending */
		2291	inline_size void
1668	timers_reify (EV_P)	2292	timers_reify (EV_P)
1669	{	2293	{
1670	EV_FREQUENT_CHECK;	2294	EV_FREQUENT_CHECK;
1671		2295
1672	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now)	2296	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
1673	{	2297	{
1674	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);	2298	do
1675
1676	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1677
1678	/* first reschedule or stop timer */
1679	if (w->repeat)
1680	{	2299	{
		2300	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2301
		2302	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2303
		2304	/* first reschedule or stop timer */
		2305	if (w->repeat)
		2306	{
1681	ev_at (w) += w->repeat;	2307	ev_at (w) += w->repeat;
1682	if (ev_at (w) < mn_now)	2308	if (ev_at (w) < mn_now)
1683	ev_at (w) = mn_now;	2309	ev_at (w) = mn_now;
1684		2310
1685	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	2311	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1686		2312
1687	ANHE_at_cache (timers [HEAP0]);	2313	ANHE_at_cache (timers [HEAP0]);
1688	downheap (timers, timercnt, HEAP0);	2314	downheap (timers, timercnt, HEAP0);
		2315	}
		2316	else
		2317	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2318
		2319	EV_FREQUENT_CHECK;
		2320	feed_reverse (EV_A_ (W)w);
1689	}	2321	}
1690	else	2322	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
1691	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1692		2323
1693	EV_FREQUENT_CHECK;	2324	feed_reverse_done (EV_A_ EV_TIMER);
1694	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1695	}	2325	}
1696	}	2326	}
1697		2327
1698	#if EV_PERIODIC_ENABLE	2328	#if EV_PERIODIC_ENABLE
1699	void inline_size	2329
		2330	static void noinline
		2331	periodic_recalc (EV_P_ ev_periodic *w)
		2332	{
		2333	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2334	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2335
		2336	/* the above almost always errs on the low side */
		2337	while (at <= ev_rt_now)
		2338	{
		2339	ev_tstamp nat = at + w->interval;
		2340
		2341	/* when resolution fails us, we use ev_rt_now */
		2342	if (expect_false (nat == at))
		2343	{
		2344	at = ev_rt_now;
		2345	break;
		2346	}
		2347
		2348	at = nat;
		2349	}
		2350
		2351	ev_at (w) = at;
		2352	}
		2353
		2354	/* make periodics pending */
		2355	inline_size void
1700	periodics_reify (EV_P)	2356	periodics_reify (EV_P)
1701	{	2357	{
1702	EV_FREQUENT_CHECK;	2358	EV_FREQUENT_CHECK;
		2359
1703	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)	2360	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
1704	{	2361	{
1705	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);	2362	int feed_count = 0;
1706		2363
1707	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/	2364	do
1708
1709	/* first reschedule or stop timer */
1710	if (w->reschedule_cb)
1711	{	2365	{
		2366	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2367
		2368	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2369
		2370	/* first reschedule or stop timer */
		2371	if (w->reschedule_cb)
		2372	{
1712	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2373	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1713		2374
1714	assert (("ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));	2375	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
1715		2376
1716	ANHE_at_cache (periodics [HEAP0]);	2377	ANHE_at_cache (periodics [HEAP0]);
1717	downheap (periodics, periodiccnt, HEAP0);	2378	downheap (periodics, periodiccnt, HEAP0);
		2379	}
		2380	else if (w->interval)
		2381	{
		2382	periodic_recalc (EV_A_ w);
		2383	ANHE_at_cache (periodics [HEAP0]);
		2384	downheap (periodics, periodiccnt, HEAP0);
		2385	}
		2386	else
		2387	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2388
1718	EV_FREQUENT_CHECK;	2389	EV_FREQUENT_CHECK;
		2390	feed_reverse (EV_A_ (W)w);
1719	}	2391	}
1720	else if (w->interval)	2392	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
1721	{
1722	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1723	/* if next trigger time is not sufficiently in the future, put it there */
1724	/* this might happen because of floating point inexactness */
1725	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
1726	{
1727	ev_at (w) += w->interval;
1728		2393
1729	/* if interval is unreasonably low we might still have a time in the past */
1730	/* so correct this. this will make the periodic very inexact, but the user */
1731	/* has effectively asked to get triggered more often than possible */
1732	if (ev_at (w) < ev_rt_now)
1733	ev_at (w) = ev_rt_now;
1734	}
1735
1736	ANHE_at_cache (periodics [HEAP0]);
1737	downheap (periodics, periodiccnt, HEAP0);
1738	}
1739	else
1740	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1741
1742	EV_FREQUENT_CHECK;
1743	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);	2394	feed_reverse_done (EV_A_ EV_PERIODIC);
1744	}	2395	}
1745	}	2396	}
1746		2397
		2398	/* simply recalculate all periodics */
		2399	/* TODO: maybe ensure that at least one event happens when jumping forward? */
1747	static void noinline	2400	static void noinline ecb_cold
1748	periodics_reschedule (EV_P)	2401	periodics_reschedule (EV_P)
1749	{	2402	{
1750	int i;	2403	int i;
1751		2404
1752	/* adjust periodics after time jump */	2405	/* adjust periodics after time jump */
…		…
1755	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);	2408	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
1756		2409
1757	if (w->reschedule_cb)	2410	if (w->reschedule_cb)
1758	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2411	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1759	else if (w->interval)	2412	else if (w->interval)
1760	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;	2413	periodic_recalc (EV_A_ w);
1761		2414
1762	ANHE_at_cache (periodics [i]);	2415	ANHE_at_cache (periodics [i]);
1763	}	2416	}
1764		2417
1765	reheap (periodics, periodiccnt);	2418	reheap (periodics, periodiccnt);
1766	}	2419	}
1767	#endif	2420	#endif
1768		2421
1769	void inline_speed	2422	/* adjust all timers by a given offset */
		2423	static void noinline ecb_cold
		2424	timers_reschedule (EV_P_ ev_tstamp adjust)
		2425	{
		2426	int i;
		2427
		2428	for (i = 0; i < timercnt; ++i)
		2429	{
		2430	ANHE *he = timers + i + HEAP0;
		2431	ANHE_w (*he)->at += adjust;
		2432	ANHE_at_cache (*he);
		2433	}
		2434	}
		2435
		2436	/* fetch new monotonic and realtime times from the kernel */
		2437	/* also detect if there was a timejump, and act accordingly */
		2438	inline_speed void
1770	time_update (EV_P_ ev_tstamp max_block)	2439	time_update (EV_P_ ev_tstamp max_block)
1771	{	2440	{
1772	int i;
1773
1774	#if EV_USE_MONOTONIC	2441	#if EV_USE_MONOTONIC
1775	if (expect_true (have_monotonic))	2442	if (expect_true (have_monotonic))
1776	{	2443	{
		2444	int i;
1777	ev_tstamp odiff = rtmn_diff;	2445	ev_tstamp odiff = rtmn_diff;
1778		2446
1779	mn_now = get_clock ();	2447	mn_now = get_clock ();
1780		2448
1781	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2449	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1797	* doesn't hurt either as we only do this on time-jumps or	2465	* doesn't hurt either as we only do this on time-jumps or
1798	* in the unlikely event of having been preempted here.	2466	* in the unlikely event of having been preempted here.
1799	*/	2467	*/
1800	for (i = 4; --i; )	2468	for (i = 4; --i; )
1801	{	2469	{
		2470	ev_tstamp diff;
1802	rtmn_diff = ev_rt_now - mn_now;	2471	rtmn_diff = ev_rt_now - mn_now;
1803		2472
		2473	diff = odiff - rtmn_diff;
		2474
1804	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))	2475	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1805	return; /* all is well */	2476	return; /* all is well */
1806		2477
1807	ev_rt_now = ev_time ();	2478	ev_rt_now = ev_time ();
1808	mn_now = get_clock ();	2479	mn_now = get_clock ();
1809	now_floor = mn_now;	2480	now_floor = mn_now;
1810	}	2481	}
1811		2482
		2483	/* no timer adjustment, as the monotonic clock doesn't jump */
		2484	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1812	# if EV_PERIODIC_ENABLE	2485	# if EV_PERIODIC_ENABLE
1813	periodics_reschedule (EV_A);	2486	periodics_reschedule (EV_A);
1814	# endif	2487	# endif
1815	/* no timer adjustment, as the monotonic clock doesn't jump */
1816	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1817	}	2488	}
1818	else	2489	else
1819	#endif	2490	#endif
1820	{	2491	{
1821	ev_rt_now = ev_time ();	2492	ev_rt_now = ev_time ();
1822		2493
1823	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2494	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1824	{	2495	{
		2496	/* adjust timers. this is easy, as the offset is the same for all of them */
		2497	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1825	#if EV_PERIODIC_ENABLE	2498	#if EV_PERIODIC_ENABLE
1826	periodics_reschedule (EV_A);	2499	periodics_reschedule (EV_A);
1827	#endif	2500	#endif
1828	/* adjust timers. this is easy, as the offset is the same for all of them */
1829	for (i = 0; i < timercnt; ++i)
1830	{
1831	ANHE *he = timers + i + HEAP0;
1832	ANHE_w (*he)->at += ev_rt_now - mn_now;
1833	ANHE_at_cache (*he);
1834	}
1835	}	2501	}
1836		2502
1837	mn_now = ev_rt_now;	2503	mn_now = ev_rt_now;
1838	}	2504	}
1839	}	2505	}
1840		2506
1841	void	2507	void
1842	ev_ref (EV_P)
1843	{
1844	++activecnt;
1845	}
1846
1847	void
1848	ev_unref (EV_P)
1849	{
1850	--activecnt;
1851	}
1852
1853	static int loop_done;
1854
1855	void
1856	ev_loop (EV_P_ int flags)	2508	ev_run (EV_P_ int flags)
1857	{	2509	{
		2510	#if EV_FEATURE_API
		2511	++loop_depth;
		2512	#endif
		2513
		2514	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		2515
1858	loop_done = EVUNLOOP_CANCEL;	2516	loop_done = EVBREAK_CANCEL;
1859		2517
1860	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2518	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1861		2519
1862	do	2520	do
1863	{	2521	{
		2522	#if EV_VERIFY >= 2
		2523	ev_verify (EV_A);
		2524	#endif
		2525
1864	#ifndef _WIN32	2526	#ifndef _WIN32
1865	if (expect_false (curpid)) /* penalise the forking check even more */	2527	if (expect_false (curpid)) /* penalise the forking check even more */
1866	if (expect_false (getpid () != curpid))	2528	if (expect_false (getpid () != curpid))
1867	{	2529	{
1868	curpid = getpid ();	2530	curpid = getpid ();
…		…
1874	/* we might have forked, so queue fork handlers */	2536	/* we might have forked, so queue fork handlers */
1875	if (expect_false (postfork))	2537	if (expect_false (postfork))
1876	if (forkcnt)	2538	if (forkcnt)
1877	{	2539	{
1878	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2540	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1879	call_pending (EV_A);	2541	EV_INVOKE_PENDING;
1880	}	2542	}
1881	#endif	2543	#endif
1882		2544
		2545	#if EV_PREPARE_ENABLE
1883	/* queue prepare watchers (and execute them) */	2546	/* queue prepare watchers (and execute them) */
1884	if (expect_false (preparecnt))	2547	if (expect_false (preparecnt))
1885	{	2548	{
1886	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2549	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1887	call_pending (EV_A);	2550	EV_INVOKE_PENDING;
1888	}	2551	}
		2552	#endif
1889		2553
1890	if (expect_false (!activecnt))	2554	if (expect_false (loop_done))
1891	break;	2555	break;
1892		2556
1893	/* we might have forked, so reify kernel state if necessary */	2557	/* we might have forked, so reify kernel state if necessary */
1894	if (expect_false (postfork))	2558	if (expect_false (postfork))
1895	loop_fork (EV_A);	2559	loop_fork (EV_A);
…		…
1900	/* calculate blocking time */	2564	/* calculate blocking time */
1901	{	2565	{
1902	ev_tstamp waittime = 0.;	2566	ev_tstamp waittime = 0.;
1903	ev_tstamp sleeptime = 0.;	2567	ev_tstamp sleeptime = 0.;
1904		2568
		2569	/* remember old timestamp for io_blocktime calculation */
		2570	ev_tstamp prev_mn_now = mn_now;
		2571
		2572	/* update time to cancel out callback processing overhead */
		2573	time_update (EV_A_ 1e100);
		2574
		2575	/* from now on, we want a pipe-wake-up */
		2576	pipe_write_wanted = 1;
		2577
1905	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2578	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1906	{	2579	{
1907	/* update time to cancel out callback processing overhead */
1908	time_update (EV_A_ 1e100);
1909
1910	waittime = MAX_BLOCKTIME;	2580	waittime = MAX_BLOCKTIME;
1911		2581
1912	if (timercnt)	2582	if (timercnt)
1913	{	2583	{
1914	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;	2584	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1915	if (waittime > to) waittime = to;	2585	if (waittime > to) waittime = to;
1916	}	2586	}
1917		2587
1918	#if EV_PERIODIC_ENABLE	2588	#if EV_PERIODIC_ENABLE
1919	if (periodiccnt)	2589	if (periodiccnt)
1920	{	2590	{
1921	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;	2591	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1922	if (waittime > to) waittime = to;	2592	if (waittime > to) waittime = to;
1923	}	2593	}
1924	#endif	2594	#endif
1925		2595
		2596	/* don't let timeouts decrease the waittime below timeout_blocktime */
1926	if (expect_false (waittime < timeout_blocktime))	2597	if (expect_false (waittime < timeout_blocktime))
1927	waittime = timeout_blocktime;	2598	waittime = timeout_blocktime;
1928		2599
1929	sleeptime = waittime - backend_fudge;	2600	/* at this point, we NEED to wait, so we have to ensure */
		2601	/* to pass a minimum nonzero value to the backend */
		2602	if (expect_false (waittime < backend_mintime))
		2603	waittime = backend_mintime;
1930		2604
		2605	/* extra check because io_blocktime is commonly 0 */
1931	if (expect_true (sleeptime > io_blocktime))	2606	if (expect_false (io_blocktime))
1932	sleeptime = io_blocktime;
1933
1934	if (sleeptime)
1935	{	2607	{
		2608	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2609
		2610	if (sleeptime > waittime - backend_mintime)
		2611	sleeptime = waittime - backend_mintime;
		2612
		2613	if (expect_true (sleeptime > 0.))
		2614	{
1936	ev_sleep (sleeptime);	2615	ev_sleep (sleeptime);
1937	waittime -= sleeptime;	2616	waittime -= sleeptime;
		2617	}
1938	}	2618	}
1939	}	2619	}
1940		2620
		2621	#if EV_FEATURE_API
1941	++loop_count;	2622	++loop_count;
		2623	#endif
		2624	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1942	backend_poll (EV_A_ waittime);	2625	backend_poll (EV_A_ waittime);
		2626	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2627
		2628	pipe_write_wanted = 0;
		2629
		2630	if (pipe_write_skipped)
		2631	{
		2632	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2633	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2634	}
		2635
1943		2636
1944	/* update ev_rt_now, do magic */	2637	/* update ev_rt_now, do magic */
1945	time_update (EV_A_ waittime + sleeptime);	2638	time_update (EV_A_ waittime + sleeptime);
1946	}	2639	}
1947		2640
…		…
1954	#if EV_IDLE_ENABLE	2647	#if EV_IDLE_ENABLE
1955	/* queue idle watchers unless other events are pending */	2648	/* queue idle watchers unless other events are pending */
1956	idle_reify (EV_A);	2649	idle_reify (EV_A);
1957	#endif	2650	#endif
1958		2651
		2652	#if EV_CHECK_ENABLE
1959	/* queue check watchers, to be executed first */	2653	/* queue check watchers, to be executed first */
1960	if (expect_false (checkcnt))	2654	if (expect_false (checkcnt))
1961	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2655	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2656	#endif
1962		2657
1963	call_pending (EV_A);	2658	EV_INVOKE_PENDING;
1964	}	2659	}
1965	while (expect_true (	2660	while (expect_true (
1966	activecnt	2661	activecnt
1967	&& !loop_done	2662	&& !loop_done
1968	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))	2663	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
1969	));	2664	));
1970		2665
1971	if (loop_done == EVUNLOOP_ONE)	2666	if (loop_done == EVBREAK_ONE)
1972	loop_done = EVUNLOOP_CANCEL;	2667	loop_done = EVBREAK_CANCEL;
		2668
		2669	#if EV_FEATURE_API
		2670	--loop_depth;
		2671	#endif
1973	}	2672	}
1974		2673
1975	void	2674	void
1976	ev_unloop (EV_P_ int how)	2675	ev_break (EV_P_ int how)
1977	{	2676	{
1978	loop_done = how;	2677	loop_done = how;
1979	}	2678	}
1980		2679
		2680	void
		2681	ev_ref (EV_P)
		2682	{
		2683	++activecnt;
		2684	}
		2685
		2686	void
		2687	ev_unref (EV_P)
		2688	{
		2689	--activecnt;
		2690	}
		2691
		2692	void
		2693	ev_now_update (EV_P)
		2694	{
		2695	time_update (EV_A_ 1e100);
		2696	}
		2697
		2698	void
		2699	ev_suspend (EV_P)
		2700	{
		2701	ev_now_update (EV_A);
		2702	}
		2703
		2704	void
		2705	ev_resume (EV_P)
		2706	{
		2707	ev_tstamp mn_prev = mn_now;
		2708
		2709	ev_now_update (EV_A);
		2710	timers_reschedule (EV_A_ mn_now - mn_prev);
		2711	#if EV_PERIODIC_ENABLE
		2712	/* TODO: really do this? */
		2713	periodics_reschedule (EV_A);
		2714	#endif
		2715	}
		2716
1981	/*****************************************************************************/	2717	/*****************************************************************************/
		2718	/* singly-linked list management, used when the expected list length is short */
1982		2719
1983	void inline_size	2720	inline_size void
1984	wlist_add (WL *head, WL elem)	2721	wlist_add (WL *head, WL elem)
1985	{	2722	{
1986	elem->next = *head;	2723	elem->next = *head;
1987	*head = elem;	2724	*head = elem;
1988	}	2725	}
1989		2726
1990	void inline_size	2727	inline_size void
1991	wlist_del (WL *head, WL elem)	2728	wlist_del (WL *head, WL elem)
1992	{	2729	{
1993	while (*head)	2730	while (*head)
1994	{	2731	{
1995	if (*head == elem)	2732	if (expect_true (*head == elem))
1996	{	2733	{
1997	*head = elem->next;	2734	*head = elem->next;
1998	return;	2735	break;
1999	}	2736	}
2000		2737
2001	head = &(*head)->next;	2738	head = &(*head)->next;
2002	}	2739	}
2003	}	2740	}
2004		2741
2005	void inline_speed	2742	/* internal, faster, version of ev_clear_pending */
		2743	inline_speed void
2006	clear_pending (EV_P_ W w)	2744	clear_pending (EV_P_ W w)
2007	{	2745	{
2008	if (w->pending)	2746	if (w->pending)
2009	{	2747	{
2010	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2748	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
2011	w->pending = 0;	2749	w->pending = 0;
2012	}	2750	}
2013	}	2751	}
2014		2752
2015	int	2753	int
…		…
2019	int pending = w_->pending;	2757	int pending = w_->pending;
2020		2758
2021	if (expect_true (pending))	2759	if (expect_true (pending))
2022	{	2760	{
2023	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2761	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2762	p->w = (W)&pending_w;
2024	w_->pending = 0;	2763	w_->pending = 0;
2025	p->w = 0;
2026	return p->events;	2764	return p->events;
2027	}	2765	}
2028	else	2766	else
2029	return 0;	2767	return 0;
2030	}	2768	}
2031		2769
2032	void inline_size	2770	inline_size void
2033	pri_adjust (EV_P_ W w)	2771	pri_adjust (EV_P_ W w)
2034	{	2772	{
2035	int pri = w->priority;	2773	int pri = ev_priority (w);
2036	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2774	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
2037	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2775	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
2038	w->priority = pri;	2776	ev_set_priority (w, pri);
2039	}	2777	}
2040		2778
2041	void inline_speed	2779	inline_speed void
2042	ev_start (EV_P_ W w, int active)	2780	ev_start (EV_P_ W w, int active)
2043	{	2781	{
2044	pri_adjust (EV_A_ w);	2782	pri_adjust (EV_A_ w);
2045	w->active = active;	2783	w->active = active;
2046	ev_ref (EV_A);	2784	ev_ref (EV_A);
2047	}	2785	}
2048		2786
2049	void inline_size	2787	inline_size void
2050	ev_stop (EV_P_ W w)	2788	ev_stop (EV_P_ W w)
2051	{	2789	{
2052	ev_unref (EV_A);	2790	ev_unref (EV_A);
2053	w->active = 0;	2791	w->active = 0;
2054	}	2792	}
…		…
2061	int fd = w->fd;	2799	int fd = w->fd;
2062		2800
2063	if (expect_false (ev_is_active (w)))	2801	if (expect_false (ev_is_active (w)))
2064	return;	2802	return;
2065		2803
2066	assert (("ev_io_start called with negative fd", fd >= 0));	2804	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2805	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
2067		2806
2068	EV_FREQUENT_CHECK;	2807	EV_FREQUENT_CHECK;
2069		2808
2070	ev_start (EV_A_ (W)w, 1);	2809	ev_start (EV_A_ (W)w, 1);
2071	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2810	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
2072	wlist_add (&anfds[fd].head, (WL)w);	2811	wlist_add (&anfds[fd].head, (WL)w);
2073		2812
2074	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2813	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
2075	w->events &= ~EV_IOFDSET;	2814	w->events &= ~EV__IOFDSET;
2076		2815
2077	EV_FREQUENT_CHECK;	2816	EV_FREQUENT_CHECK;
2078	}	2817	}
2079		2818
2080	void noinline	2819	void noinline
…		…
2082	{	2821	{
2083	clear_pending (EV_A_ (W)w);	2822	clear_pending (EV_A_ (W)w);
2084	if (expect_false (!ev_is_active (w)))	2823	if (expect_false (!ev_is_active (w)))
2085	return;	2824	return;
2086		2825
2087	assert (("ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2826	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
2088		2827
2089	EV_FREQUENT_CHECK;	2828	EV_FREQUENT_CHECK;
2090		2829
2091	wlist_del (&anfds[w->fd].head, (WL)w);	2830	wlist_del (&anfds[w->fd].head, (WL)w);
2092	ev_stop (EV_A_ (W)w);	2831	ev_stop (EV_A_ (W)w);
2093		2832
2094	fd_change (EV_A_ w->fd, 1);	2833	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
2095		2834
2096	EV_FREQUENT_CHECK;	2835	EV_FREQUENT_CHECK;
2097	}	2836	}
2098		2837
2099	void noinline	2838	void noinline
…		…
2102	if (expect_false (ev_is_active (w)))	2841	if (expect_false (ev_is_active (w)))
2103	return;	2842	return;
2104		2843
2105	ev_at (w) += mn_now;	2844	ev_at (w) += mn_now;
2106		2845
2107	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2846	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
2108		2847
2109	EV_FREQUENT_CHECK;	2848	EV_FREQUENT_CHECK;
2110		2849
2111	++timercnt;	2850	++timercnt;
2112	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);	2851	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
…		…
2115	ANHE_at_cache (timers [ev_active (w)]);	2854	ANHE_at_cache (timers [ev_active (w)]);
2116	upheap (timers, ev_active (w));	2855	upheap (timers, ev_active (w));
2117		2856
2118	EV_FREQUENT_CHECK;	2857	EV_FREQUENT_CHECK;
2119		2858
2120	/*assert (("internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/	2859	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
2121	}	2860	}
2122		2861
2123	void noinline	2862	void noinline
2124	ev_timer_stop (EV_P_ ev_timer *w)	2863	ev_timer_stop (EV_P_ ev_timer *w)
2125	{	2864	{
…		…
2130	EV_FREQUENT_CHECK;	2869	EV_FREQUENT_CHECK;
2131		2870
2132	{	2871	{
2133	int active = ev_active (w);	2872	int active = ev_active (w);
2134		2873
2135	assert (("internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));	2874	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
2136		2875
2137	--timercnt;	2876	--timercnt;
2138		2877
2139	if (expect_true (active < timercnt + HEAP0))	2878	if (expect_true (active < timercnt + HEAP0))
2140	{	2879	{
2141	timers [active] = timers [timercnt + HEAP0];	2880	timers [active] = timers [timercnt + HEAP0];
2142	adjustheap (timers, timercnt, active);	2881	adjustheap (timers, timercnt, active);
2143	}	2882	}
2144	}	2883	}
2145		2884
2146	EV_FREQUENT_CHECK;
2147
2148	ev_at (w) -= mn_now;	2885	ev_at (w) -= mn_now;
2149		2886
2150	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
2151	}	2890	}
2152		2891
2153	void noinline	2892	void noinline
2154	ev_timer_again (EV_P_ ev_timer *w)	2893	ev_timer_again (EV_P_ ev_timer *w)
2155	{	2894	{
…		…
2173	}	2912	}
2174		2913
2175	EV_FREQUENT_CHECK;	2914	EV_FREQUENT_CHECK;
2176	}	2915	}
2177		2916
		2917	ev_tstamp
		2918	ev_timer_remaining (EV_P_ ev_timer *w)
		2919	{
		2920	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
		2921	}
		2922
2178	#if EV_PERIODIC_ENABLE	2923	#if EV_PERIODIC_ENABLE
2179	void noinline	2924	void noinline
2180	ev_periodic_start (EV_P_ ev_periodic *w)	2925	ev_periodic_start (EV_P_ ev_periodic *w)
2181	{	2926	{
2182	if (expect_false (ev_is_active (w)))	2927	if (expect_false (ev_is_active (w)))
…		…
2184		2929
2185	if (w->reschedule_cb)	2930	if (w->reschedule_cb)
2186	ev_at (w) = w->reschedule_cb (w, ev_rt_now);	2931	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
2187	else if (w->interval)	2932	else if (w->interval)
2188	{	2933	{
2189	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2934	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
2190	/* this formula differs from the one in periodic_reify because we do not always round up */	2935	periodic_recalc (EV_A_ w);
2191	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
2192	}	2936	}
2193	else	2937	else
2194	ev_at (w) = w->offset;	2938	ev_at (w) = w->offset;
2195		2939
2196	EV_FREQUENT_CHECK;	2940	EV_FREQUENT_CHECK;
…		…
2202	ANHE_at_cache (periodics [ev_active (w)]);	2946	ANHE_at_cache (periodics [ev_active (w)]);
2203	upheap (periodics, ev_active (w));	2947	upheap (periodics, ev_active (w));
2204		2948
2205	EV_FREQUENT_CHECK;	2949	EV_FREQUENT_CHECK;
2206		2950
2207	/*assert (("internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/	2951	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
2208	}	2952	}
2209		2953
2210	void noinline	2954	void noinline
2211	ev_periodic_stop (EV_P_ ev_periodic *w)	2955	ev_periodic_stop (EV_P_ ev_periodic *w)
2212	{	2956	{
…		…
2217	EV_FREQUENT_CHECK;	2961	EV_FREQUENT_CHECK;
2218		2962
2219	{	2963	{
2220	int active = ev_active (w);	2964	int active = ev_active (w);
2221		2965
2222	assert (("internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));	2966	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
2223		2967
2224	--periodiccnt;	2968	--periodiccnt;
2225		2969
2226	if (expect_true (active < periodiccnt + HEAP0))	2970	if (expect_true (active < periodiccnt + HEAP0))
2227	{	2971	{
2228	periodics [active] = periodics [periodiccnt + HEAP0];	2972	periodics [active] = periodics [periodiccnt + HEAP0];
2229	adjustheap (periodics, periodiccnt, active);	2973	adjustheap (periodics, periodiccnt, active);
2230	}	2974	}
2231	}	2975	}
2232		2976
2233	EV_FREQUENT_CHECK;
2234
2235	ev_stop (EV_A_ (W)w);	2977	ev_stop (EV_A_ (W)w);
		2978
		2979	EV_FREQUENT_CHECK;
2236	}	2980	}
2237		2981
2238	void noinline	2982	void noinline
2239	ev_periodic_again (EV_P_ ev_periodic *w)	2983	ev_periodic_again (EV_P_ ev_periodic *w)
2240	{	2984	{
…		…
2246		2990
2247	#ifndef SA_RESTART	2991	#ifndef SA_RESTART
2248	# define SA_RESTART 0	2992	# define SA_RESTART 0
2249	#endif	2993	#endif
2250		2994
		2995	#if EV_SIGNAL_ENABLE
		2996
2251	void noinline	2997	void noinline
2252	ev_signal_start (EV_P_ ev_signal *w)	2998	ev_signal_start (EV_P_ ev_signal *w)
2253	{	2999	{
2254	#if EV_MULTIPLICITY
2255	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2256	#endif
2257	if (expect_false (ev_is_active (w)))	3000	if (expect_false (ev_is_active (w)))
2258	return;	3001	return;
2259		3002
2260	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	3003	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
2261		3004
2262	evpipe_init (EV_A);	3005	#if EV_MULTIPLICITY
		3006	assert (("libev: a signal must not be attached to two different loops",
		3007	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
2263		3008
2264	EV_FREQUENT_CHECK;	3009	signals [w->signum - 1].loop = EV_A;
		3010	#endif
2265		3011
		3012	EV_FREQUENT_CHECK;
		3013
		3014	#if EV_USE_SIGNALFD
		3015	if (sigfd == -2)
2266	{	3016	{
2267	#ifndef _WIN32	3017	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
2268	sigset_t full, prev;	3018	if (sigfd < 0 && errno == EINVAL)
2269	sigfillset (&full);	3019	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
2270	sigprocmask (SIG_SETMASK, &full, &prev);
2271	#endif
2272		3020
2273	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	3021	if (sigfd >= 0)
		3022	{
		3023	fd_intern (sigfd); /* doing it twice will not hurt */
2274		3024
2275	#ifndef _WIN32	3025	sigemptyset (&sigfd_set);
2276	sigprocmask (SIG_SETMASK, &prev, 0);	3026
2277	#endif	3027	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		3028	ev_set_priority (&sigfd_w, EV_MAXPRI);
		3029	ev_io_start (EV_A_ &sigfd_w);
		3030	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		3031	}
2278	}	3032	}
		3033
		3034	if (sigfd >= 0)
		3035	{
		3036	/* TODO: check .head */
		3037	sigaddset (&sigfd_set, w->signum);
		3038	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		3039
		3040	signalfd (sigfd, &sigfd_set, 0);
		3041	}
		3042	#endif
2279		3043
2280	ev_start (EV_A_ (W)w, 1);	3044	ev_start (EV_A_ (W)w, 1);
2281	wlist_add (&signals [w->signum - 1].head, (WL)w);	3045	wlist_add (&signals [w->signum - 1].head, (WL)w);
2282		3046
2283	if (!((WL)w)->next)	3047	if (!((WL)w)->next)
		3048	# if EV_USE_SIGNALFD
		3049	if (sigfd < 0) /*TODO*/
		3050	# endif
2284	{	3051	{
2285	#if _WIN32	3052	# ifdef _WIN32
		3053	evpipe_init (EV_A);
		3054
2286	signal (w->signum, ev_sighandler);	3055	signal (w->signum, ev_sighandler);
2287	#else	3056	# else
2288	struct sigaction sa;	3057	struct sigaction sa;
		3058
		3059	evpipe_init (EV_A);
		3060
2289	sa.sa_handler = ev_sighandler;	3061	sa.sa_handler = ev_sighandler;
2290	sigfillset (&sa.sa_mask);	3062	sigfillset (&sa.sa_mask);
2291	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3063	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
2292	sigaction (w->signum, &sa, 0);	3064	sigaction (w->signum, &sa, 0);
		3065
		3066	if (origflags & EVFLAG_NOSIGMASK)
		3067	{
		3068	sigemptyset (&sa.sa_mask);
		3069	sigaddset (&sa.sa_mask, w->signum);
		3070	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3071	}
2293	#endif	3072	#endif
2294	}	3073	}
2295		3074
2296	EV_FREQUENT_CHECK;	3075	EV_FREQUENT_CHECK;
2297	}	3076	}
2298		3077
2299	void noinline	3078	void noinline
…		…
2307		3086
2308	wlist_del (&signals [w->signum - 1].head, (WL)w);	3087	wlist_del (&signals [w->signum - 1].head, (WL)w);
2309	ev_stop (EV_A_ (W)w);	3088	ev_stop (EV_A_ (W)w);
2310		3089
2311	if (!signals [w->signum - 1].head)	3090	if (!signals [w->signum - 1].head)
		3091	{
		3092	#if EV_MULTIPLICITY
		3093	signals [w->signum - 1].loop = 0; /* unattach from signal */
		3094	#endif
		3095	#if EV_USE_SIGNALFD
		3096	if (sigfd >= 0)
		3097	{
		3098	sigset_t ss;
		3099
		3100	sigemptyset (&ss);
		3101	sigaddset (&ss, w->signum);
		3102	sigdelset (&sigfd_set, w->signum);
		3103
		3104	signalfd (sigfd, &sigfd_set, 0);
		3105	sigprocmask (SIG_UNBLOCK, &ss, 0);
		3106	}
		3107	else
		3108	#endif
2312	signal (w->signum, SIG_DFL);	3109	signal (w->signum, SIG_DFL);
		3110	}
2313		3111
2314	EV_FREQUENT_CHECK;	3112	EV_FREQUENT_CHECK;
2315	}	3113	}
		3114
		3115	#endif
		3116
		3117	#if EV_CHILD_ENABLE
2316		3118
2317	void	3119	void
2318	ev_child_start (EV_P_ ev_child *w)	3120	ev_child_start (EV_P_ ev_child *w)
2319	{	3121	{
2320	#if EV_MULTIPLICITY	3122	#if EV_MULTIPLICITY
2321	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3123	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
2322	#endif	3124	#endif
2323	if (expect_false (ev_is_active (w)))	3125	if (expect_false (ev_is_active (w)))
2324	return;	3126	return;
2325		3127
2326	EV_FREQUENT_CHECK;	3128	EV_FREQUENT_CHECK;
2327		3129
2328	ev_start (EV_A_ (W)w, 1);	3130	ev_start (EV_A_ (W)w, 1);
2329	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3131	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2330		3132
2331	EV_FREQUENT_CHECK;	3133	EV_FREQUENT_CHECK;
2332	}	3134	}
2333		3135
2334	void	3136	void
…		…
2338	if (expect_false (!ev_is_active (w)))	3140	if (expect_false (!ev_is_active (w)))
2339	return;	3141	return;
2340		3142
2341	EV_FREQUENT_CHECK;	3143	EV_FREQUENT_CHECK;
2342		3144
2343	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3145	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
2344	ev_stop (EV_A_ (W)w);	3146	ev_stop (EV_A_ (W)w);
2345		3147
2346	EV_FREQUENT_CHECK;	3148	EV_FREQUENT_CHECK;
2347	}	3149	}
		3150
		3151	#endif
2348		3152
2349	#if EV_STAT_ENABLE	3153	#if EV_STAT_ENABLE
2350		3154
2351	# ifdef _WIN32	3155	# ifdef _WIN32
2352	# undef lstat	3156	# undef lstat
2353	# define lstat(a,b) _stati64 (a,b)	3157	# define lstat(a,b) _stati64 (a,b)
2354	# endif	3158	# endif
2355		3159
2356	#define DEF_STAT_INTERVAL 5.0074891	3160	#define DEF_STAT_INTERVAL 5.0074891
		3161	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
2357	#define MIN_STAT_INTERVAL 0.1074891	3162	#define MIN_STAT_INTERVAL 0.1074891
2358		3163
2359	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	3164	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
2360		3165
2361	#if EV_USE_INOTIFY	3166	#if EV_USE_INOTIFY
2362	# define EV_INOTIFY_BUFSIZE 8192	3167
		3168	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		3169	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2363		3170
2364	static void noinline	3171	static void noinline
2365	infy_add (EV_P_ ev_stat *w)	3172	infy_add (EV_P_ ev_stat *w)
2366	{	3173	{
2367	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);	3174	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);
2368		3175
2369	if (w->wd < 0)	3176	if (w->wd >= 0)
		3177	{
		3178	struct statfs sfs;
		3179
		3180	/* now local changes will be tracked by inotify, but remote changes won't */
		3181	/* unless the filesystem is known to be local, we therefore still poll */
		3182	/* also do poll on <2.6.25, but with normal frequency */
		3183
		3184	if (!fs_2625)
		3185	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3186	else if (!statfs (w->path, &sfs)
		3187	&& (sfs.f_type == 0x1373 /* devfs */
		3188	|| sfs.f_type == 0xEF53 /* ext2/3 */
		3189	|| sfs.f_type == 0x3153464a /* jfs */
		3190	|| sfs.f_type == 0x52654973 /* reiser3 */
		3191	|| sfs.f_type == 0x01021994 /* tempfs */
		3192	|| sfs.f_type == 0x58465342 /* xfs */))
		3193	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		3194	else
		3195	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2370	{	3196	}
2371	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	3197	else
		3198	{
		3199	/* can't use inotify, continue to stat */
		3200	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2372		3201
2373	/* monitor some parent directory for speedup hints */	3202	/* if path is not there, monitor some parent directory for speedup hints */
2374	/* note that exceeding the hardcoded limit is not a correctness issue, */	3203	/* note that exceeding the hardcoded path limit is not a correctness issue, */
2375	/* but an efficiency issue only */	3204	/* but an efficiency issue only */
2376	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	3205	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2377	{	3206	{
2378	char path [4096];	3207	char path [4096];
2379	strcpy (path, w->path);	3208	strcpy (path, w->path);
…		…
2383	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	3212	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2384	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	3213	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2385		3214
2386	char *pend = strrchr (path, '/');	3215	char *pend = strrchr (path, '/');
2387		3216
2388	if (!pend)	3217	if (!pend || pend == path)
2389	break; /* whoops, no '/', complain to your admin */	3218	break;
2390		3219
2391	*pend = 0;	3220	*pend = 0;
2392	w->wd = inotify_add_watch (fs_fd, path, mask);	3221	w->wd = inotify_add_watch (fs_fd, path, mask);
2393	}	3222	}
2394	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3223	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2395	}	3224	}
2396	}	3225	}
2397	else
2398	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2399		3226
2400	if (w->wd >= 0)	3227	if (w->wd >= 0)
2401	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3228	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
		3229
		3230	/* now re-arm timer, if required */
		3231	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		3232	ev_timer_again (EV_A_ &w->timer);
		3233	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2402	}	3234	}
2403		3235
2404	static void noinline	3236	static void noinline
2405	infy_del (EV_P_ ev_stat *w)	3237	infy_del (EV_P_ ev_stat *w)
2406	{	3238	{
…		…
2409		3241
2410	if (wd < 0)	3242	if (wd < 0)
2411	return;	3243	return;
2412		3244
2413	w->wd = -2;	3245	w->wd = -2;
2414	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3246	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2415	wlist_del (&fs_hash [slot].head, (WL)w);	3247	wlist_del (&fs_hash [slot].head, (WL)w);
2416		3248
2417	/* remove this watcher, if others are watching it, they will rearm */	3249	/* remove this watcher, if others are watching it, they will rearm */
2418	inotify_rm_watch (fs_fd, wd);	3250	inotify_rm_watch (fs_fd, wd);
2419	}	3251	}
2420		3252
2421	static void noinline	3253	static void noinline
2422	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3254	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2423	{	3255	{
2424	if (slot < 0)	3256	if (slot < 0)
2425	/* overflow, need to check for all hahs slots */	3257	/* overflow, need to check for all hash slots */
2426	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3258	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2427	infy_wd (EV_A_ slot, wd, ev);	3259	infy_wd (EV_A_ slot, wd, ev);
2428	else	3260	else
2429	{	3261	{
2430	WL w_;	3262	WL w_;
2431		3263
2432	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3264	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2433	{	3265	{
2434	ev_stat *w = (ev_stat *)w_;	3266	ev_stat *w = (ev_stat *)w_;
2435	w_ = w_->next; /* lets us remove this watcher and all before it */	3267	w_ = w_->next; /* lets us remove this watcher and all before it */
2436		3268
2437	if (w->wd == wd || wd == -1)	3269	if (w->wd == wd || wd == -1)
2438	{	3270	{
2439	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3271	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2440	{	3272	{
		3273	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2441	w->wd = -1;	3274	w->wd = -1;
2442	infy_add (EV_A_ w); /* re-add, no matter what */	3275	infy_add (EV_A_ w); /* re-add, no matter what */
2443	}	3276	}
2444		3277
2445	stat_timer_cb (EV_A_ &w->timer, 0);	3278	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2450		3283
2451	static void	3284	static void
2452	infy_cb (EV_P_ ev_io *w, int revents)	3285	infy_cb (EV_P_ ev_io *w, int revents)
2453	{	3286	{
2454	char buf [EV_INOTIFY_BUFSIZE];	3287	char buf [EV_INOTIFY_BUFSIZE];
2455	struct inotify_event *ev = (struct inotify_event *)buf;
2456	int ofs;	3288	int ofs;
2457	int len = read (fs_fd, buf, sizeof (buf));	3289	int len = read (fs_fd, buf, sizeof (buf));
2458		3290
2459	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3291	for (ofs = 0; ofs < len; )
		3292	{
		3293	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2460	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3294	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3295	ofs += sizeof (struct inotify_event) + ev->len;
		3296	}
2461	}	3297	}
2462		3298
2463	void inline_size	3299	inline_size void ecb_cold
		3300	ev_check_2625 (EV_P)
		3301	{
		3302	/* kernels < 2.6.25 are borked
		3303	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3304	*/
		3305	if (ev_linux_version () < 0x020619)
		3306	return;
		3307
		3308	fs_2625 = 1;
		3309	}
		3310
		3311	inline_size int
		3312	infy_newfd (void)
		3313	{
		3314	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3315	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3316	if (fd >= 0)
		3317	return fd;
		3318	#endif
		3319	return inotify_init ();
		3320	}
		3321
		3322	inline_size void
2464	infy_init (EV_P)	3323	infy_init (EV_P)
2465	{	3324	{
2466	if (fs_fd != -2)	3325	if (fs_fd != -2)
2467	return;	3326	return;
2468		3327
		3328	fs_fd = -1;
		3329
		3330	ev_check_2625 (EV_A);
		3331
2469	fs_fd = inotify_init ();	3332	fs_fd = infy_newfd ();
2470		3333
2471	if (fs_fd >= 0)	3334	if (fs_fd >= 0)
2472	{	3335	{
		3336	fd_intern (fs_fd);
2473	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3337	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2474	ev_set_priority (&fs_w, EV_MAXPRI);	3338	ev_set_priority (&fs_w, EV_MAXPRI);
2475	ev_io_start (EV_A_ &fs_w);	3339	ev_io_start (EV_A_ &fs_w);
		3340	ev_unref (EV_A);
2476	}	3341	}
2477	}	3342	}
2478		3343
2479	void inline_size	3344	inline_size void
2480	infy_fork (EV_P)	3345	infy_fork (EV_P)
2481	{	3346	{
2482	int slot;	3347	int slot;
2483		3348
2484	if (fs_fd < 0)	3349	if (fs_fd < 0)
2485	return;	3350	return;
2486		3351
		3352	ev_ref (EV_A);
		3353	ev_io_stop (EV_A_ &fs_w);
2487	close (fs_fd);	3354	close (fs_fd);
2488	fs_fd = inotify_init ();	3355	fs_fd = infy_newfd ();
2489		3356
		3357	if (fs_fd >= 0)
		3358	{
		3359	fd_intern (fs_fd);
		3360	ev_io_set (&fs_w, fs_fd, EV_READ);
		3361	ev_io_start (EV_A_ &fs_w);
		3362	ev_unref (EV_A);
		3363	}
		3364
2490	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3365	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2491	{	3366	{
2492	WL w_ = fs_hash [slot].head;	3367	WL w_ = fs_hash [slot].head;
2493	fs_hash [slot].head = 0;	3368	fs_hash [slot].head = 0;
2494		3369
2495	while (w_)	3370	while (w_)
…		…
2500	w->wd = -1;	3375	w->wd = -1;
2501		3376
2502	if (fs_fd >= 0)	3377	if (fs_fd >= 0)
2503	infy_add (EV_A_ w); /* re-add, no matter what */	3378	infy_add (EV_A_ w); /* re-add, no matter what */
2504	else	3379	else
		3380	{
		3381	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3382	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2505	ev_timer_start (EV_A_ &w->timer);	3383	ev_timer_again (EV_A_ &w->timer);
		3384	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3385	}
2506	}	3386	}
2507
2508	}	3387	}
2509	}	3388	}
2510		3389
		3390	#endif
		3391
		3392	#ifdef _WIN32
		3393	# define EV_LSTAT(p,b) _stati64 (p, b)
		3394	#else
		3395	# define EV_LSTAT(p,b) lstat (p, b)
2511	#endif	3396	#endif
2512		3397
2513	void	3398	void
2514	ev_stat_stat (EV_P_ ev_stat *w)	3399	ev_stat_stat (EV_P_ ev_stat *w)
2515	{	3400	{
…		…
2522	static void noinline	3407	static void noinline
2523	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3408	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2524	{	3409	{
2525	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3410	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2526		3411
2527	/* we copy this here each the time so that */	3412	ev_statdata prev = w->attr;
2528	/* prev has the old value when the callback gets invoked */
2529	w->prev = w->attr;
2530	ev_stat_stat (EV_A_ w);	3413	ev_stat_stat (EV_A_ w);
2531		3414
2532	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3415	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2533	if (	3416	if (
2534	w->prev.st_dev != w->attr.st_dev	3417	prev.st_dev != w->attr.st_dev
2535	|| w->prev.st_ino != w->attr.st_ino	3418	|| prev.st_ino != w->attr.st_ino
2536	|| w->prev.st_mode != w->attr.st_mode	3419	|| prev.st_mode != w->attr.st_mode
2537	|| w->prev.st_nlink != w->attr.st_nlink	3420	|| prev.st_nlink != w->attr.st_nlink
2538	|| w->prev.st_uid != w->attr.st_uid	3421	|| prev.st_uid != w->attr.st_uid
2539	|| w->prev.st_gid != w->attr.st_gid	3422	|| prev.st_gid != w->attr.st_gid
2540	|| w->prev.st_rdev != w->attr.st_rdev	3423	|| prev.st_rdev != w->attr.st_rdev
2541	|| w->prev.st_size != w->attr.st_size	3424	|| prev.st_size != w->attr.st_size
2542	|| w->prev.st_atime != w->attr.st_atime	3425	|| prev.st_atime != w->attr.st_atime
2543	|| w->prev.st_mtime != w->attr.st_mtime	3426	|| prev.st_mtime != w->attr.st_mtime
2544	|| w->prev.st_ctime != w->attr.st_ctime	3427	|| prev.st_ctime != w->attr.st_ctime
2545	) {	3428	) {
		3429	/* we only update w->prev on actual differences */
		3430	/* in case we test more often than invoke the callback, */
		3431	/* to ensure that prev is always different to attr */
		3432	w->prev = prev;
		3433
2546	#if EV_USE_INOTIFY	3434	#if EV_USE_INOTIFY
		3435	if (fs_fd >= 0)
		3436	{
2547	infy_del (EV_A_ w);	3437	infy_del (EV_A_ w);
2548	infy_add (EV_A_ w);	3438	infy_add (EV_A_ w);
2549	ev_stat_stat (EV_A_ w); /* avoid race... */	3439	ev_stat_stat (EV_A_ w); /* avoid race... */
		3440	}
2550	#endif	3441	#endif
2551		3442
2552	ev_feed_event (EV_A_ w, EV_STAT);	3443	ev_feed_event (EV_A_ w, EV_STAT);
2553	}	3444	}
2554	}	3445	}
…		…
2557	ev_stat_start (EV_P_ ev_stat *w)	3448	ev_stat_start (EV_P_ ev_stat *w)
2558	{	3449	{
2559	if (expect_false (ev_is_active (w)))	3450	if (expect_false (ev_is_active (w)))
2560	return;	3451	return;
2561		3452
2562	/* since we use memcmp, we need to clear any padding data etc. */
2563	memset (&w->prev, 0, sizeof (ev_statdata));
2564	memset (&w->attr, 0, sizeof (ev_statdata));
2565
2566	ev_stat_stat (EV_A_ w);	3453	ev_stat_stat (EV_A_ w);
2567		3454
		3455	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2568	if (w->interval < MIN_STAT_INTERVAL)	3456	w->interval = MIN_STAT_INTERVAL;
2569	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2570		3457
2571	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3458	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2572	ev_set_priority (&w->timer, ev_priority (w));	3459	ev_set_priority (&w->timer, ev_priority (w));
2573		3460
2574	#if EV_USE_INOTIFY	3461	#if EV_USE_INOTIFY
2575	infy_init (EV_A);	3462	infy_init (EV_A);
2576		3463
2577	if (fs_fd >= 0)	3464	if (fs_fd >= 0)
2578	infy_add (EV_A_ w);	3465	infy_add (EV_A_ w);
2579	else	3466	else
2580	#endif	3467	#endif
		3468	{
2581	ev_timer_start (EV_A_ &w->timer);	3469	ev_timer_again (EV_A_ &w->timer);
		3470	ev_unref (EV_A);
		3471	}
2582		3472
2583	ev_start (EV_A_ (W)w, 1);	3473	ev_start (EV_A_ (W)w, 1);
2584		3474
2585	EV_FREQUENT_CHECK;	3475	EV_FREQUENT_CHECK;
2586	}	3476	}
…		…
2595	EV_FREQUENT_CHECK;	3485	EV_FREQUENT_CHECK;
2596		3486
2597	#if EV_USE_INOTIFY	3487	#if EV_USE_INOTIFY
2598	infy_del (EV_A_ w);	3488	infy_del (EV_A_ w);
2599	#endif	3489	#endif
		3490
		3491	if (ev_is_active (&w->timer))
		3492	{
		3493	ev_ref (EV_A);
2600	ev_timer_stop (EV_A_ &w->timer);	3494	ev_timer_stop (EV_A_ &w->timer);
		3495	}
2601		3496
2602	ev_stop (EV_A_ (W)w);	3497	ev_stop (EV_A_ (W)w);
2603		3498
2604	EV_FREQUENT_CHECK;	3499	EV_FREQUENT_CHECK;
2605	}	3500	}
…		…
2650		3545
2651	EV_FREQUENT_CHECK;	3546	EV_FREQUENT_CHECK;
2652	}	3547	}
2653	#endif	3548	#endif
2654		3549
		3550	#if EV_PREPARE_ENABLE
2655	void	3551	void
2656	ev_prepare_start (EV_P_ ev_prepare *w)	3552	ev_prepare_start (EV_P_ ev_prepare *w)
2657	{	3553	{
2658	if (expect_false (ev_is_active (w)))	3554	if (expect_false (ev_is_active (w)))
2659	return;	3555	return;
…		…
2685		3581
2686	ev_stop (EV_A_ (W)w);	3582	ev_stop (EV_A_ (W)w);
2687		3583
2688	EV_FREQUENT_CHECK;	3584	EV_FREQUENT_CHECK;
2689	}	3585	}
		3586	#endif
2690		3587
		3588	#if EV_CHECK_ENABLE
2691	void	3589	void
2692	ev_check_start (EV_P_ ev_check *w)	3590	ev_check_start (EV_P_ ev_check *w)
2693	{	3591	{
2694	if (expect_false (ev_is_active (w)))	3592	if (expect_false (ev_is_active (w)))
2695	return;	3593	return;
…		…
2721		3619
2722	ev_stop (EV_A_ (W)w);	3620	ev_stop (EV_A_ (W)w);
2723		3621
2724	EV_FREQUENT_CHECK;	3622	EV_FREQUENT_CHECK;
2725	}	3623	}
		3624	#endif
2726		3625
2727	#if EV_EMBED_ENABLE	3626	#if EV_EMBED_ENABLE
2728	void noinline	3627	void noinline
2729	ev_embed_sweep (EV_P_ ev_embed *w)	3628	ev_embed_sweep (EV_P_ ev_embed *w)
2730	{	3629	{
2731	ev_loop (w->other, EVLOOP_NONBLOCK);	3630	ev_run (w->other, EVRUN_NOWAIT);
2732	}	3631	}
2733		3632
2734	static void	3633	static void
2735	embed_io_cb (EV_P_ ev_io *io, int revents)	3634	embed_io_cb (EV_P_ ev_io *io, int revents)
2736	{	3635	{
2737	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3636	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2738		3637
2739	if (ev_cb (w))	3638	if (ev_cb (w))
2740	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3639	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2741	else	3640	else
2742	ev_loop (w->other, EVLOOP_NONBLOCK);	3641	ev_run (w->other, EVRUN_NOWAIT);
2743	}	3642	}
2744		3643
2745	static void	3644	static void
2746	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3645	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2747	{	3646	{
2748	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3647	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2749		3648
2750	{	3649	{
2751	struct ev_loop *loop = w->other;	3650	EV_P = w->other;
2752		3651
2753	while (fdchangecnt)	3652	while (fdchangecnt)
2754	{	3653	{
2755	fd_reify (EV_A);	3654	fd_reify (EV_A);
2756	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3655	ev_run (EV_A_ EVRUN_NOWAIT);
2757	}	3656	}
2758	}	3657	}
		3658	}
		3659
		3660	static void
		3661	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3662	{
		3663	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3664
		3665	ev_embed_stop (EV_A_ w);
		3666
		3667	{
		3668	EV_P = w->other;
		3669
		3670	ev_loop_fork (EV_A);
		3671	ev_run (EV_A_ EVRUN_NOWAIT);
		3672	}
		3673
		3674	ev_embed_start (EV_A_ w);
2759	}	3675	}
2760		3676
2761	#if 0	3677	#if 0
2762	static void	3678	static void
2763	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3679	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2771	{	3687	{
2772	if (expect_false (ev_is_active (w)))	3688	if (expect_false (ev_is_active (w)))
2773	return;	3689	return;
2774		3690
2775	{	3691	{
2776	struct ev_loop *loop = w->other;	3692	EV_P = w->other;
2777	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3693	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2778	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3694	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2779	}	3695	}
2780		3696
2781	EV_FREQUENT_CHECK;	3697	EV_FREQUENT_CHECK;
2782		3698
…		…
2785		3701
2786	ev_prepare_init (&w->prepare, embed_prepare_cb);	3702	ev_prepare_init (&w->prepare, embed_prepare_cb);
2787	ev_set_priority (&w->prepare, EV_MINPRI);	3703	ev_set_priority (&w->prepare, EV_MINPRI);
2788	ev_prepare_start (EV_A_ &w->prepare);	3704	ev_prepare_start (EV_A_ &w->prepare);
2789		3705
		3706	ev_fork_init (&w->fork, embed_fork_cb);
		3707	ev_fork_start (EV_A_ &w->fork);
		3708
2790	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3709	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2791		3710
2792	ev_start (EV_A_ (W)w, 1);	3711	ev_start (EV_A_ (W)w, 1);
2793		3712
2794	EV_FREQUENT_CHECK;	3713	EV_FREQUENT_CHECK;
…		…
2801	if (expect_false (!ev_is_active (w)))	3720	if (expect_false (!ev_is_active (w)))
2802	return;	3721	return;
2803		3722
2804	EV_FREQUENT_CHECK;	3723	EV_FREQUENT_CHECK;
2805		3724
2806	ev_io_stop (EV_A_ &w->io);	3725	ev_io_stop (EV_A_ &w->io);
2807	ev_prepare_stop (EV_A_ &w->prepare);	3726	ev_prepare_stop (EV_A_ &w->prepare);
		3727	ev_fork_stop (EV_A_ &w->fork);
2808		3728
2809	ev_stop (EV_A_ (W)w);	3729	ev_stop (EV_A_ (W)w);
2810		3730
2811	EV_FREQUENT_CHECK;	3731	EV_FREQUENT_CHECK;
2812	}	3732	}
…		…
2848		3768
2849	EV_FREQUENT_CHECK;	3769	EV_FREQUENT_CHECK;
2850	}	3770	}
2851	#endif	3771	#endif
2852		3772
		3773	#if EV_CLEANUP_ENABLE
		3774	void
		3775	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3776	{
		3777	if (expect_false (ev_is_active (w)))
		3778	return;
		3779
		3780	EV_FREQUENT_CHECK;
		3781
		3782	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3783	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3784	cleanups [cleanupcnt - 1] = w;
		3785
		3786	/* cleanup watchers should never keep a refcount on the loop */
		3787	ev_unref (EV_A);
		3788	EV_FREQUENT_CHECK;
		3789	}
		3790
		3791	void
		3792	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3793	{
		3794	clear_pending (EV_A_ (W)w);
		3795	if (expect_false (!ev_is_active (w)))
		3796	return;
		3797
		3798	EV_FREQUENT_CHECK;
		3799	ev_ref (EV_A);
		3800
		3801	{
		3802	int active = ev_active (w);
		3803
		3804	cleanups [active - 1] = cleanups [--cleanupcnt];
		3805	ev_active (cleanups [active - 1]) = active;
		3806	}
		3807
		3808	ev_stop (EV_A_ (W)w);
		3809
		3810	EV_FREQUENT_CHECK;
		3811	}
		3812	#endif
		3813
2853	#if EV_ASYNC_ENABLE	3814	#if EV_ASYNC_ENABLE
2854	void	3815	void
2855	ev_async_start (EV_P_ ev_async *w)	3816	ev_async_start (EV_P_ ev_async *w)
2856	{	3817	{
2857	if (expect_false (ev_is_active (w)))	3818	if (expect_false (ev_is_active (w)))
2858	return;	3819	return;
2859		3820
		3821	w->sent = 0;
		3822
2860	evpipe_init (EV_A);	3823	evpipe_init (EV_A);
2861		3824
2862	EV_FREQUENT_CHECK;	3825	EV_FREQUENT_CHECK;
2863		3826
2864	ev_start (EV_A_ (W)w, ++asynccnt);	3827	ev_start (EV_A_ (W)w, ++asynccnt);
…		…
2891		3854
2892	void	3855	void
2893	ev_async_send (EV_P_ ev_async *w)	3856	ev_async_send (EV_P_ ev_async *w)
2894	{	3857	{
2895	w->sent = 1;	3858	w->sent = 1;
2896	evpipe_write (EV_A_ &gotasync);	3859	evpipe_write (EV_A_ &async_pending);
2897	}	3860	}
2898	#endif	3861	#endif
2899		3862
2900	/*****************************************************************************/	3863	/*****************************************************************************/
2901		3864
…		…
2911	once_cb (EV_P_ struct ev_once *once, int revents)	3874	once_cb (EV_P_ struct ev_once *once, int revents)
2912	{	3875	{
2913	void (*cb)(int revents, void *arg) = once->cb;	3876	void (*cb)(int revents, void *arg) = once->cb;
2914	void *arg = once->arg;	3877	void *arg = once->arg;
2915		3878
2916	ev_io_stop (EV_A_ &once->io);	3879	ev_io_stop (EV_A_ &once->io);
2917	ev_timer_stop (EV_A_ &once->to);	3880	ev_timer_stop (EV_A_ &once->to);
2918	ev_free (once);	3881	ev_free (once);
2919		3882
2920	cb (revents, arg);	3883	cb (revents, arg);
2921	}	3884	}
2922		3885
2923	static void	3886	static void
2924	once_cb_io (EV_P_ ev_io *w, int revents)	3887	once_cb_io (EV_P_ ev_io *w, int revents)
2925	{	3888	{
2926	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3889	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3890
		3891	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2927	}	3892	}
2928		3893
2929	static void	3894	static void
2930	once_cb_to (EV_P_ ev_timer *w, int revents)	3895	once_cb_to (EV_P_ ev_timer *w, int revents)
2931	{	3896	{
2932	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3897	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3898
		3899	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2933	}	3900	}
2934		3901
2935	void	3902	void
2936	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3903	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2937	{	3904	{
2938	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3905	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2939		3906
2940	if (expect_false (!once))	3907	if (expect_false (!once))
2941	{	3908	{
2942	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3909	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2943	return;	3910	return;
2944	}	3911	}
2945		3912
2946	once->cb = cb;	3913	once->cb = cb;
2947	once->arg = arg;	3914	once->arg = arg;
…		…
2959	ev_timer_set (&once->to, timeout, 0.);	3926	ev_timer_set (&once->to, timeout, 0.);
2960	ev_timer_start (EV_A_ &once->to);	3927	ev_timer_start (EV_A_ &once->to);
2961	}	3928	}
2962	}	3929	}
2963		3930
		3931	/*****************************************************************************/
		3932
		3933	#if EV_WALK_ENABLE
		3934	void ecb_cold
		3935	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3936	{
		3937	int i, j;
		3938	ev_watcher_list *wl, *wn;
		3939
		3940	if (types & (EV_IO | EV_EMBED))
		3941	for (i = 0; i < anfdmax; ++i)
		3942	for (wl = anfds [i].head; wl; )
		3943	{
		3944	wn = wl->next;
		3945
		3946	#if EV_EMBED_ENABLE
		3947	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3948	{
		3949	if (types & EV_EMBED)
		3950	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3951	}
		3952	else
		3953	#endif
		3954	#if EV_USE_INOTIFY
		3955	if (ev_cb ((ev_io *)wl) == infy_cb)
		3956	;
		3957	else
		3958	#endif
		3959	if ((ev_io *)wl != &pipe_w)
		3960	if (types & EV_IO)
		3961	cb (EV_A_ EV_IO, wl);
		3962
		3963	wl = wn;
		3964	}
		3965
		3966	if (types & (EV_TIMER | EV_STAT))
		3967	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3968	#if EV_STAT_ENABLE
		3969	/*TODO: timer is not always active*/
		3970	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3971	{
		3972	if (types & EV_STAT)
		3973	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3974	}
		3975	else
		3976	#endif
		3977	if (types & EV_TIMER)
		3978	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3979
		3980	#if EV_PERIODIC_ENABLE
		3981	if (types & EV_PERIODIC)
		3982	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3983	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3984	#endif
		3985
		3986	#if EV_IDLE_ENABLE
		3987	if (types & EV_IDLE)
		3988	for (j = NUMPRI; i--; )
		3989	for (i = idlecnt [j]; i--; )
		3990	cb (EV_A_ EV_IDLE, idles [j][i]);
		3991	#endif
		3992
		3993	#if EV_FORK_ENABLE
		3994	if (types & EV_FORK)
		3995	for (i = forkcnt; i--; )
		3996	if (ev_cb (forks [i]) != embed_fork_cb)
		3997	cb (EV_A_ EV_FORK, forks [i]);
		3998	#endif
		3999
		4000	#if EV_ASYNC_ENABLE
		4001	if (types & EV_ASYNC)
		4002	for (i = asynccnt; i--; )
		4003	cb (EV_A_ EV_ASYNC, asyncs [i]);
		4004	#endif
		4005
		4006	#if EV_PREPARE_ENABLE
		4007	if (types & EV_PREPARE)
		4008	for (i = preparecnt; i--; )
		4009	# if EV_EMBED_ENABLE
		4010	if (ev_cb (prepares [i]) != embed_prepare_cb)
		4011	# endif
		4012	cb (EV_A_ EV_PREPARE, prepares [i]);
		4013	#endif
		4014
		4015	#if EV_CHECK_ENABLE
		4016	if (types & EV_CHECK)
		4017	for (i = checkcnt; i--; )
		4018	cb (EV_A_ EV_CHECK, checks [i]);
		4019	#endif
		4020
		4021	#if EV_SIGNAL_ENABLE
		4022	if (types & EV_SIGNAL)
		4023	for (i = 0; i < EV_NSIG - 1; ++i)
		4024	for (wl = signals [i].head; wl; )
		4025	{
		4026	wn = wl->next;
		4027	cb (EV_A_ EV_SIGNAL, wl);
		4028	wl = wn;
		4029	}
		4030	#endif
		4031
		4032	#if EV_CHILD_ENABLE
		4033	if (types & EV_CHILD)
		4034	for (i = (EV_PID_HASHSIZE); i--; )
		4035	for (wl = childs [i]; wl; )
		4036	{
		4037	wn = wl->next;
		4038	cb (EV_A_ EV_CHILD, wl);
		4039	wl = wn;
		4040	}
		4041	#endif
		4042	/* EV_STAT 0x00001000 /* stat data changed */
		4043	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		4044	}
		4045	#endif
		4046
2964	#if EV_MULTIPLICITY	4047	#if EV_MULTIPLICITY
2965	#include "ev_wrap.h"	4048	#include "ev_wrap.h"
2966	#endif	4049	#endif
2967		4050
2968	#ifdef __cplusplus	4051	EV_CPP(})
2969	}
2970	#endif
2971		4052

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