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Comparing libev/ev.c (file contents):
Revision 1.199 by root, Tue Dec 25 07:05:45 2007 UTC vs.
Revision 1.380 by root, Mon Jun 27 19:20:01 2011 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 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	40	/* this big block deduces configuration from config.h */
41	extern "C" {
42	#endif
43
44	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
45	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
46	# include EV_CONFIG_H	43	# include EV_CONFIG_H
47	# else	44	# else
48	# include "config.h"	45	# include "config.h"
49	# endif	46	# endif
50		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
51	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
52	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
53	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
54	# endif	71	# endif
55	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
56	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
57	# endif	74	# endif
58	# else	75	# else
59	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
60	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
61	# endif	78	# endif
62	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
63	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
64	# endif	81	# endif
65	# endif	82	# endif
66		83
		84	# if HAVE_NANOSLEEP
67	# ifndef EV_USE_NANOSLEEP	85	# ifndef EV_USE_NANOSLEEP
68	# if HAVE_NANOSLEEP
69	# define EV_USE_NANOSLEEP 1	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		87	# endif
70	# else	88	# else
		89	# undef EV_USE_NANOSLEEP
71	# 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
72	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
73	# endif	100	# endif
74		101
		102	# if HAVE_POLL && HAVE_POLL_H
75	# ifndef EV_USE_SELECT	103	# ifndef EV_USE_POLL
76	# if HAVE_SELECT && HAVE_SYS_SELECT_H	104	# define EV_USE_POLL EV_FEATURE_BACKENDS
77	# define EV_USE_SELECT 1
78	# else
79	# define EV_USE_SELECT 0
80	# endif	105	# endif
81	# endif
82
83	# ifndef EV_USE_POLL
84	# if HAVE_POLL && HAVE_POLL_H
85	# define EV_USE_POLL 1
86	# else	106	# else
		107	# undef EV_USE_POLL
87	# define EV_USE_POLL 0	108	# define EV_USE_POLL 0
88	# endif
89	# endif	109	# endif
90		110
91	# ifndef EV_USE_EPOLL
92	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
94	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95	# define EV_USE_EPOLL 0
96	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
97	# endif	118	# endif
98		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
100	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101	# define EV_USE_KQUEUE 1
102	# else
103	# define EV_USE_KQUEUE 0
104	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
105	# endif	127	# endif
106		128
107	# ifndef EV_USE_PORT
108	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
109	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
110	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
111	# define EV_USE_PORT 0
112	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
113	# endif	136	# endif
114		137
115	# ifndef EV_USE_INOTIFY
116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
118	# else
119	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
120	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
121	# endif	145	# endif
122		146
		147	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		148	# ifndef EV_USE_SIGNALFD
		149	# define EV_USE_SIGNALFD EV_FEATURE_OS
		150	# endif
		151	# else
		152	# undef EV_USE_SIGNALFD
		153	# define EV_USE_SIGNALFD 0
123	#endif	154	# endif
124		155
125	#include <math.h>	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
		163	# endif
		164
		165	#endif
		166
126	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
127	#include <fcntl.h>	169	#include <fcntl.h>
128	#include <stddef.h>	170	#include <stddef.h>
129		171
130	#include <stdio.h>	172	#include <stdio.h>
131		173
132	#include <assert.h>	174	#include <assert.h>
133	#include <errno.h>	175	#include <errno.h>
134	#include <sys/types.h>	176	#include <sys/types.h>
135	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
136		179
137	#include <signal.h>	180	#include <signal.h>
138		181
139	#ifdef EV_H	182	#ifdef EV_H
140	# include EV_H	183	# include EV_H
141	#else	184	#else
142	# include "ev.h"	185	# include "ev.h"
143	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
144		189
145	#ifndef _WIN32	190	#ifndef _WIN32
146	# include <sys/time.h>	191	# include <sys/time.h>
147	# include <sys/wait.h>	192	# include <sys/wait.h>
148	# include <unistd.h>	193	# include <unistd.h>
149	#else	194	#else
		195	# include <io.h>
150	# define WIN32_LEAN_AND_MEAN	196	# define WIN32_LEAN_AND_MEAN
151	# include <windows.h>	197	# include <windows.h>
152	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
153	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
154	# endif	200	# endif
		201	# undef EV_AVOID_STDIO
		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
		211
		212	/* this block tries to deduce configuration from header-defined symbols and defaults */
		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
155	#endif	251	# endif
156		252	#endif
157	/**/
158		253
159	#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
160	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
		259	# endif
161	#endif	260	#endif
162		261
163	#ifndef EV_USE_REALTIME	262	#ifndef EV_USE_REALTIME
164	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165	#endif	264	#endif
166		265
167	#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
168	# define EV_USE_NANOSLEEP 0	270	# define EV_USE_NANOSLEEP 0
		271	# endif
169	#endif	272	#endif
170		273
171	#ifndef EV_USE_SELECT	274	#ifndef EV_USE_SELECT
172	# define EV_USE_SELECT 1	275	# define EV_USE_SELECT EV_FEATURE_BACKENDS
173	#endif	276	#endif
174		277
175	#ifndef EV_USE_POLL	278	#ifndef EV_USE_POLL
176	# ifdef _WIN32	279	# ifdef _WIN32
177	# define EV_USE_POLL 0	280	# define EV_USE_POLL 0
178	# else	281	# else
179	# define EV_USE_POLL 1	282	# define EV_USE_POLL EV_FEATURE_BACKENDS
180	# endif	283	# endif
181	#endif	284	#endif
182		285
183	#ifndef EV_USE_EPOLL	286	#ifndef EV_USE_EPOLL
		287	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		288	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
		289	# else
184	# define EV_USE_EPOLL 0	290	# define EV_USE_EPOLL 0
		291	# endif
185	#endif	292	#endif
186		293
187	#ifndef EV_USE_KQUEUE	294	#ifndef EV_USE_KQUEUE
188	# define EV_USE_KQUEUE 0	295	# define EV_USE_KQUEUE 0
189	#endif	296	#endif
…		…
191	#ifndef EV_USE_PORT	298	#ifndef EV_USE_PORT
192	# define EV_USE_PORT 0	299	# define EV_USE_PORT 0
193	#endif	300	#endif
194		301
195	#ifndef EV_USE_INOTIFY	302	#ifndef EV_USE_INOTIFY
		303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		304	# define EV_USE_INOTIFY EV_FEATURE_OS
		305	# else
196	# define EV_USE_INOTIFY 0	306	# define EV_USE_INOTIFY 0
		307	# endif
197	#endif	308	#endif
198		309
199	#ifndef EV_PID_HASHSIZE	310	#ifndef EV_PID_HASHSIZE
200	# if EV_MINIMAL	311	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201	# define EV_PID_HASHSIZE 1	312	#endif
		313
		314	#ifndef EV_INOTIFY_HASHSIZE
		315	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
		316	#endif
		317
		318	#ifndef EV_USE_EVENTFD
		319	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		320	# define EV_USE_EVENTFD EV_FEATURE_OS
202	# else	321	# else
203	# define EV_PID_HASHSIZE 16	322	# define EV_USE_EVENTFD 0
204	# endif	323	# endif
205	#endif	324	#endif
206		325
207	#ifndef EV_INOTIFY_HASHSIZE	326	#ifndef EV_USE_SIGNALFD
208	# if EV_MINIMAL	327	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209	# define EV_INOTIFY_HASHSIZE 1	328	# define EV_USE_SIGNALFD EV_FEATURE_OS
210	# else	329	# else
211	# define EV_INOTIFY_HASHSIZE 16	330	# define EV_USE_SIGNALFD 0
212	# endif	331	# endif
213	#endif	332	#endif
214		333
215	/**/	334	#if 0 /* debugging */
		335	# define EV_VERIFY 3
		336	# define EV_USE_4HEAP 1
		337	# define EV_HEAP_CACHE_AT 1
		338	#endif
		339
		340	#ifndef EV_VERIFY
		341	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		342	#endif
		343
		344	#ifndef EV_USE_4HEAP
		345	# define EV_USE_4HEAP EV_FEATURE_DATA
		346	#endif
		347
		348	#ifndef EV_HEAP_CACHE_AT
		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
		364	#endif
		365
		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
216		373
217	#ifndef CLOCK_MONOTONIC	374	#ifndef CLOCK_MONOTONIC
218	# undef EV_USE_MONOTONIC	375	# undef EV_USE_MONOTONIC
219	# define EV_USE_MONOTONIC 0	376	# define EV_USE_MONOTONIC 0
220	#endif	377	#endif
…		…
228	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
229	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
230	#endif	387	#endif
231		388
232	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
233	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
234	# include <sys/select.h>	392	# include <sys/select.h>
235	# endif	393	# endif
236	#endif	394	#endif
237		395
238	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
		397	# include <sys/statfs.h>
239	# 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
240	#endif	404	#endif
241		405
242	#if EV_SELECT_IS_WINSOCKET	406	#if EV_SELECT_IS_WINSOCKET
243	# include <winsock.h>	407	# include <winsock.h>
244	#endif	408	#endif
245		409
		410	#if EV_USE_EVENTFD
		411	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		412	# include <stdint.h>
		413	# ifndef EFD_NONBLOCK
		414	# define EFD_NONBLOCK O_NONBLOCK
		415	# endif
		416	# ifndef EFD_CLOEXEC
		417	# ifdef O_CLOEXEC
		418	# define EFD_CLOEXEC O_CLOEXEC
		419	# else
		420	# define EFD_CLOEXEC 02000000
		421	# 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	};
		446	#endif
		447
246	/**/	448	/**/
247		449
		450	#if EV_VERIFY >= 3
		451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
		452	#else
		453	# define EV_FREQUENT_CHECK do { } while (0)
		454	#endif
		455
248	/*	456	/*
249	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
250	* It is added to ev_rt_now when scheduling periodics
251	* to ensure progress, time-wise, even when rounding
252	* errors are against us.
253	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
254	* Better solutions welcome.
255	*/	459	*/
256	#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 */
257		462
258	#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) */
259	#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) */
260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261		465
262	#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)
263	# 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)
264	# 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
265	#else	493	#else
266	# define expect(expr,value) (expr)	494	#define ecb_inline static
267	# define noinline
268	# if __STDC_VERSION__ < 199901L
269	# define inline
270	# endif	495	#endif
271	#endif
272		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. */
273	#define expect_false(expr) expect ((expr) != 0, 0)	528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274	#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
275	#define inline_size static inline	536	#define inline_size ecb_inline
276		537
277	#if EV_MINIMAL	538	#if EV_FEATURE_CODE
		539	# define inline_speed ecb_inline
		540	#else
278	# 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)
279	#else	548	#else
280	# define inline_speed static inline
281	#endif
282
283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	549	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		550	#endif
285		551
286	#define EMPTY /* required for microsofts broken pseudo-c compiler */	552	#define EMPTY /* required for microsofts broken pseudo-c compiler */
287	#define EMPTY2(a,b) /* used to suppress some warnings */	553	#define EMPTY2(a,b) /* used to suppress some warnings */
288		554
289	typedef ev_watcher *W;	555	typedef ev_watcher *W;
290	typedef ev_watcher_list *WL;	556	typedef ev_watcher_list *WL;
291	typedef ev_watcher_time *WT;	557	typedef ev_watcher_time *WT;
292		558
		559	#define ev_active(w) ((W)(w))->active
		560	#define ev_at(w) ((WT)(w))->at
		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
293	#if EV_USE_MONOTONIC	568	#if EV_USE_MONOTONIC
294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295	/* giving it a reasonably high chance of working on typical architetcures */
296	static sig_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)
297	#endif	580	#endif
298		581
299	#ifdef _WIN32	582	#ifdef _WIN32
300	# include "ev_win32.c"	583	# include "ev_win32.c"
301	#endif	584	#endif
302		585
303	/*****************************************************************************/	586	/*****************************************************************************/
304		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
305	static void (*syserr_cb)(const char *msg);	686	static void (*syserr_cb)(const char *msg);
306		687
307	void	688	void ecb_cold
308	ev_set_syserr_cb (void (*cb)(const char *msg))	689	ev_set_syserr_cb (void (*cb)(const char *msg))
309	{	690	{
310	syserr_cb = cb;	691	syserr_cb = cb;
311	}	692	}
312		693
313	static void noinline	694	static void noinline ecb_cold
314	syserr (const char *msg)	695	ev_syserr (const char *msg)
315	{	696	{
316	if (!msg)	697	if (!msg)
317	msg = "(libev) system error";	698	msg = "(libev) system error";
318		699
319	if (syserr_cb)	700	if (syserr_cb)
320	syserr_cb (msg);	701	syserr_cb (msg);
321	else	702	else
322	{	703	{
		704	#if EV_AVOID_STDIO
		705	ev_printerr (msg);
		706	ev_printerr (": ");
		707	ev_printerr (strerror (errno));
		708	ev_printerr ("\n");
		709	#else
323	perror (msg);	710	perror (msg);
		711	#endif
324	abort ();	712	abort ();
325	}	713	}
326	}	714	}
327		715
		716	static void *
		717	ev_realloc_emul (void *ptr, long size)
		718	{
		719	#if __GLIBC__
		720	return realloc (ptr, size);
		721	#else
		722	/* some systems, notably openbsd and darwin, fail to properly
		723	* implement realloc (x, 0) (as required by both ansi c-89 and
		724	* the single unix specification, so work around them here.
		725	*/
		726
		727	if (size)
		728	return realloc (ptr, size);
		729
		730	free (ptr);
		731	return 0;
		732	#endif
		733	}
		734
328	static void *(*alloc)(void *ptr, long size);	735	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329		736
330	void	737	void ecb_cold
331	ev_set_allocator (void *(*cb)(void *ptr, long size))	738	ev_set_allocator (void *(*cb)(void *ptr, long size))
332	{	739	{
333	alloc = cb;	740	alloc = cb;
334	}	741	}
335		742
336	inline_speed void *	743	inline_speed void *
337	ev_realloc (void *ptr, long size)	744	ev_realloc (void *ptr, long size)
338	{	745	{
339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	746	ptr = alloc (ptr, size);
340		747
341	if (!ptr && size)	748	if (!ptr && size)
342	{	749	{
		750	#if EV_AVOID_STDIO
		751	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		752	#else
343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	753	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		754	#endif
344	abort ();	755	abort ();
345	}	756	}
346		757
347	return ptr;	758	return ptr;
348	}	759	}
…		…
350	#define ev_malloc(size) ev_realloc (0, (size))	761	#define ev_malloc(size) ev_realloc (0, (size))
351	#define ev_free(ptr) ev_realloc ((ptr), 0)	762	#define ev_free(ptr) ev_realloc ((ptr), 0)
352		763
353	/*****************************************************************************/	764	/*****************************************************************************/
354		765
		766	/* set in reify when reification needed */
		767	#define EV_ANFD_REIFY 1
		768
		769	/* file descriptor info structure */
355	typedef struct	770	typedef struct
356	{	771	{
357	WL head;	772	WL head;
358	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 */
359	unsigned char reify;	776	unsigned char unused;
		777	#if EV_USE_EPOLL
		778	unsigned int egen; /* generation counter to counter epoll bugs */
		779	#endif
360	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361	SOCKET handle;	781	SOCKET handle;
362	#endif	782	#endif
		783	#if EV_USE_IOCP
		784	OVERLAPPED or, ow;
		785	#endif
363	} ANFD;	786	} ANFD;
364		787
		788	/* stores the pending event set for a given watcher */
365	typedef struct	789	typedef struct
366	{	790	{
367	W w;	791	W w;
368	int events;	792	int events; /* the pending event set for the given watcher */
369	} ANPENDING;	793	} ANPENDING;
370		794
371	#if EV_USE_INOTIFY	795	#if EV_USE_INOTIFY
		796	/* hash table entry per inotify-id */
372	typedef struct	797	typedef struct
373	{	798	{
374	WL head;	799	WL head;
375	} ANFS;	800	} ANFS;
		801	#endif
		802
		803	/* Heap Entry */
		804	#if EV_HEAP_CACHE_AT
		805	/* a heap element */
		806	typedef struct {
		807	ev_tstamp at;
		808	WT w;
		809	} ANHE;
		810
		811	#define ANHE_w(he) (he).w /* access watcher, read-write */
		812	#define ANHE_at(he) (he).at /* access cached at, read-only */
		813	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		814	#else
		815	/* a heap element */
		816	typedef WT ANHE;
		817
		818	#define ANHE_w(he) (he)
		819	#define ANHE_at(he) (he)->at
		820	#define ANHE_at_cache(he)
376	#endif	821	#endif
377		822
378	#if EV_MULTIPLICITY	823	#if EV_MULTIPLICITY
379		824
380	struct ev_loop	825	struct ev_loop
…		…
399		844
400	static int ev_default_loop_ptr;	845	static int ev_default_loop_ptr;
401		846
402	#endif	847	#endif
403		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
404	/*****************************************************************************/	861	/*****************************************************************************/
405		862
		863	#ifndef EV_HAVE_EV_TIME
406	ev_tstamp	864	ev_tstamp
407	ev_time (void)	865	ev_time (void)
408	{	866	{
409	#if EV_USE_REALTIME	867	#if EV_USE_REALTIME
		868	if (expect_true (have_realtime))
		869	{
410	struct timespec ts;	870	struct timespec ts;
411	clock_gettime (CLOCK_REALTIME, &ts);	871	clock_gettime (CLOCK_REALTIME, &ts);
412	return ts.tv_sec + ts.tv_nsec * 1e-9;	872	return ts.tv_sec + ts.tv_nsec * 1e-9;
413	#else	873	}
		874	#endif
		875
414	struct timeval tv;	876	struct timeval tv;
415	gettimeofday (&tv, 0);	877	gettimeofday (&tv, 0);
416	return tv.tv_sec + tv.tv_usec * 1e-6;	878	return tv.tv_sec + tv.tv_usec * 1e-6;
417	#endif
418	}	879	}
		880	#endif
419		881
420	ev_tstamp inline_size	882	inline_size ev_tstamp
421	get_clock (void)	883	get_clock (void)
422	{	884	{
423	#if EV_USE_MONOTONIC	885	#if EV_USE_MONOTONIC
424	if (expect_true (have_monotonic))	886	if (expect_true (have_monotonic))
425	{	887	{
…		…
446	if (delay > 0.)	908	if (delay > 0.)
447	{	909	{
448	#if EV_USE_NANOSLEEP	910	#if EV_USE_NANOSLEEP
449	struct timespec ts;	911	struct timespec ts;
450		912
451	ts.tv_sec = (time_t)delay;	913	EV_TS_SET (ts, delay);
452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454	nanosleep (&ts, 0);	914	nanosleep (&ts, 0);
455	#elif defined(_WIN32)	915	#elif defined(_WIN32)
456	Sleep (delay * 1e3);	916	Sleep ((unsigned long)(delay * 1e3));
457	#else	917	#else
458	struct timeval tv;	918	struct timeval tv;
459		919
460	tv.tv_sec = (time_t)delay;	920	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	921	/* something not guaranteed by newer posix versions, but guaranteed */
462		922	/* by older ones */
		923	EV_TV_SET (tv, delay);
463	select (0, 0, 0, 0, &tv);	924	select (0, 0, 0, 0, &tv);
464	#endif	925	#endif
465	}	926	}
466	}	927	}
467		928
468	/*****************************************************************************/	929	/*****************************************************************************/
469		930
470	int inline_size	931	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		932
		933	/* find a suitable new size for the given array, */
		934	/* hopefully by rounding to a nice-to-malloc size */
		935	inline_size int
471	array_nextsize (int elem, int cur, int cnt)	936	array_nextsize (int elem, int cur, int cnt)
472	{	937	{
473	int ncur = cur + 1;	938	int ncur = cur + 1;
474		939
475	do	940	do
476	ncur <<= 1;	941	ncur <<= 1;
477	while (cnt > ncur);	942	while (cnt > ncur);
478		943
479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	944	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480	if (elem * ncur > 4096)	945	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481	{	946	{
482	ncur *= elem;	947	ncur *= elem;
483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	948	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484	ncur = ncur - sizeof (void *) * 4;	949	ncur = ncur - sizeof (void *) * 4;
485	ncur /= elem;	950	ncur /= elem;
486	}	951	}
487		952
488	return ncur;	953	return ncur;
489	}	954	}
490		955
491	static noinline void *	956	static void * noinline ecb_cold
492	array_realloc (int elem, void *base, int *cur, int cnt)	957	array_realloc (int elem, void *base, int *cur, int cnt)
493	{	958	{
494	*cur = array_nextsize (elem, *cur, cnt);	959	*cur = array_nextsize (elem, *cur, cnt);
495	return ev_realloc (base, elem * *cur);	960	return ev_realloc (base, elem * *cur);
496	}	961	}
		962
		963	#define array_init_zero(base,count) \
		964	memset ((void *)(base), 0, sizeof (*(base)) * (count))
497		965
498	#define array_needsize(type,base,cur,cnt,init) \	966	#define array_needsize(type,base,cur,cnt,init) \
499	if (expect_false ((cnt) > (cur))) \	967	if (expect_false ((cnt) > (cur))) \
500	{ \	968	{ \
501	int ocur_ = (cur); \	969	int ocur_ = (cur); \
…		…
513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	981	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514	}	982	}
515	#endif	983	#endif
516		984
517	#define array_free(stem, idx) \	985	#define array_free(stem, idx) \
518	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
519		987
520	/*****************************************************************************/	988	/*****************************************************************************/
		989
		990	/* dummy callback for pending events */
		991	static void noinline
		992	pendingcb (EV_P_ ev_prepare *w, int revents)
		993	{
		994	}
521		995
522	void noinline	996	void noinline
523	ev_feed_event (EV_P_ void *w, int revents)	997	ev_feed_event (EV_P_ void *w, int revents)
524	{	998	{
525	W w_ = (W)w;	999	W w_ = (W)w;
…		…
534	pendings [pri][w_->pending - 1].w = w_;	1008	pendings [pri][w_->pending - 1].w = w_;
535	pendings [pri][w_->pending - 1].events = revents;	1009	pendings [pri][w_->pending - 1].events = revents;
536	}	1010	}
537	}	1011	}
538		1012
539	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
540	queue_events (EV_P_ W *events, int eventcnt, int type)	1029	queue_events (EV_P_ W *events, int eventcnt, int type)
541	{	1030	{
542	int i;	1031	int i;
543		1032
544	for (i = 0; i < eventcnt; ++i)	1033	for (i = 0; i < eventcnt; ++i)
545	ev_feed_event (EV_A_ events [i], type);	1034	ev_feed_event (EV_A_ events [i], type);
546	}	1035	}
547		1036
548	/*****************************************************************************/	1037	/*****************************************************************************/
549		1038
550	void inline_size	1039	inline_speed void
551	anfds_init (ANFD *base, int count)
552	{
553	while (count--)
554	{
555	base->head = 0;
556	base->events = EV_NONE;
557	base->reify = 0;
558
559	++base;
560	}
561	}
562
563	void inline_speed
564	fd_event (EV_P_ int fd, int revents)	1040	fd_event_nocheck (EV_P_ int fd, int revents)
565	{	1041	{
566	ANFD *anfd = anfds + fd;	1042	ANFD *anfd = anfds + fd;
567	ev_io *w;	1043	ev_io *w;
568		1044
569	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)
…		…
573	if (ev)	1049	if (ev)
574	ev_feed_event (EV_A_ (W)w, ev);	1050	ev_feed_event (EV_A_ (W)w, ev);
575	}	1051	}
576	}	1052	}
577		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
578	void	1065	void
579	ev_feed_fd_event (EV_P_ int fd, int revents)	1066	ev_feed_fd_event (EV_P_ int fd, int revents)
580	{	1067	{
581	if (fd >= 0 && fd < anfdmax)	1068	if (fd >= 0 && fd < anfdmax)
582	fd_event (EV_A_ fd, revents);	1069	fd_event_nocheck (EV_A_ fd, revents);
583	}	1070	}
584		1071
585	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
586	fd_reify (EV_P)	1075	fd_reify (EV_P)
587	{	1076	{
588	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
589		1103
590	for (i = 0; i < fdchangecnt; ++i)	1104	for (i = 0; i < fdchangecnt; ++i)
591	{	1105	{
592	int fd = fdchanges [i];	1106	int fd = fdchanges [i];
593	ANFD *anfd = anfds + fd;	1107	ANFD *anfd = anfds + fd;
594	ev_io *w;	1108	ev_io *w;
595		1109
596	unsigned char events = 0;	1110	unsigned char o_events = anfd->events;
		1111	unsigned char o_reify = anfd->reify;
597		1112
598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1113	anfd->reify = 0;
599	events |= (unsigned char)w->events;
600		1114
601	#if EV_SELECT_IS_WINSOCKET	1115	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602	if (events)
603	{	1116	{
604	unsigned long argp;	1117	anfd->events = 0;
605	anfd->handle = _get_osfhandle (fd);	1118
606	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	1119	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		1120	anfd->events |= (unsigned char)w->events;
		1121
		1122	if (o_events != anfd->events)
		1123	o_reify = EV__IOFDSET; /* actually |= */
607	}	1124	}
608	#endif
609		1125
610	{	1126	if (o_reify & EV__IOFDSET)
611	unsigned char o_events = anfd->events;
612	unsigned char o_reify = anfd->reify;
613
614	anfd->reify = 0;
615	anfd->events = events;
616
617	if (o_events != events || o_reify & EV_IOFDSET)
618	backend_modify (EV_A_ fd, o_events, events);	1127	backend_modify (EV_A_ fd, o_events, anfd->events);
619	}
620	}	1128	}
621		1129
622	fdchangecnt = 0;	1130	fdchangecnt = 0;
623	}	1131	}
624		1132
625	void inline_size	1133	/* something about the given fd changed */
		1134	inline_size void
626	fd_change (EV_P_ int fd, int flags)	1135	fd_change (EV_P_ int fd, int flags)
627	{	1136	{
628	unsigned char reify = anfds [fd].reify;	1137	unsigned char reify = anfds [fd].reify;
629	anfds [fd].reify |= flags;	1138	anfds [fd].reify |= flags;
630		1139
…		…
634	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	1143	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
635	fdchanges [fdchangecnt - 1] = fd;	1144	fdchanges [fdchangecnt - 1] = fd;
636	}	1145	}
637	}	1146	}
638		1147
639	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
640	fd_kill (EV_P_ int fd)	1150	fd_kill (EV_P_ int fd)
641	{	1151	{
642	ev_io *w;	1152	ev_io *w;
643		1153
644	while ((w = (ev_io *)anfds [fd].head))	1154	while ((w = (ev_io *)anfds [fd].head))
…		…
646	ev_io_stop (EV_A_ w);	1156	ev_io_stop (EV_A_ w);
647	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);
648	}	1158	}
649	}	1159	}
650		1160
651	int inline_size	1161	/* check whether the given fd is actually valid, for error recovery */
		1162	inline_size int ecb_cold
652	fd_valid (int fd)	1163	fd_valid (int fd)
653	{	1164	{
654	#ifdef _WIN32	1165	#ifdef _WIN32
655	return _get_osfhandle (fd) != -1;	1166	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
656	#else	1167	#else
657	return fcntl (fd, F_GETFD) != -1;	1168	return fcntl (fd, F_GETFD) != -1;
658	#endif	1169	#endif
659	}	1170	}
660		1171
661	/* called on EBADF to verify fds */	1172	/* called on EBADF to verify fds */
662	static void noinline	1173	static void noinline ecb_cold
663	fd_ebadf (EV_P)	1174	fd_ebadf (EV_P)
664	{	1175	{
665	int fd;	1176	int fd;
666		1177
667	for (fd = 0; fd < anfdmax; ++fd)	1178	for (fd = 0; fd < anfdmax; ++fd)
668	if (anfds [fd].events)	1179	if (anfds [fd].events)
669	if (!fd_valid (fd) == -1 && errno == EBADF)	1180	if (!fd_valid (fd) && errno == EBADF)
670	fd_kill (EV_A_ fd);	1181	fd_kill (EV_A_ fd);
671	}	1182	}
672		1183
673	/* 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 */
674	static void noinline	1185	static void noinline ecb_cold
675	fd_enomem (EV_P)	1186	fd_enomem (EV_P)
676	{	1187	{
677	int fd;	1188	int fd;
678		1189
679	for (fd = anfdmax; fd--; )	1190	for (fd = anfdmax; fd--; )
680	if (anfds [fd].events)	1191	if (anfds [fd].events)
681	{	1192	{
682	fd_kill (EV_A_ fd);	1193	fd_kill (EV_A_ fd);
683	return;	1194	break;
684	}	1195	}
685	}	1196	}
686		1197
687	/* 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 */
688	static void noinline	1199	static void noinline
…		…
692		1203
693	for (fd = 0; fd < anfdmax; ++fd)	1204	for (fd = 0; fd < anfdmax; ++fd)
694	if (anfds [fd].events)	1205	if (anfds [fd].events)
695	{	1206	{
696	anfds [fd].events = 0;	1207	anfds [fd].events = 0;
		1208	anfds [fd].emask = 0;
697	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1209	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
698	}	1210	}
699	}	1211	}
700		1212
701	/*****************************************************************************/	1213	/* used to prepare libev internal fd's */
702		1214	/* this is not fork-safe */
703	void inline_speed	1215	inline_speed void
704	upheap (WT *heap, int k)
705	{
706	WT w = heap [k];
707
708	while (k)
709	{
710	int p = (k - 1) >> 1;
711
712	if (heap [p]->at <= w->at)
713	break;
714
715	heap [k] = heap [p];
716	((W)heap [k])->active = k + 1;
717	k = p;
718	}
719
720	heap [k] = w;
721	((W)heap [k])->active = k + 1;
722	}
723
724	void inline_speed
725	downheap (WT *heap, int N, int k)
726	{
727	WT w = heap [k];
728
729	for (;;)
730	{
731	int c = (k << 1) + 1;
732
733	if (c >= N)
734	break;
735
736	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
737	? 1 : 0;
738
739	if (w->at <= heap [c]->at)
740	break;
741
742	heap [k] = heap [c];
743	((W)heap [k])->active = k + 1;
744
745	k = c;
746	}
747
748	heap [k] = w;
749	((W)heap [k])->active = k + 1;
750	}
751
752	void inline_size
753	adjustheap (WT *heap, int N, int k)
754	{
755	upheap (heap, k);
756	downheap (heap, N, k);
757	}
758
759	/*****************************************************************************/
760
761	typedef struct
762	{
763	WL head;
764	sig_atomic_t volatile gotsig;
765	} ANSIG;
766
767	static ANSIG *signals;
768	static int signalmax;
769
770	static int sigpipe [2];
771	static sig_atomic_t volatile gotsig;
772	static ev_io sigev;
773
774	void inline_size
775	signals_init (ANSIG *base, int count)
776	{
777	while (count--)
778	{
779	base->head = 0;
780	base->gotsig = 0;
781
782	++base;
783	}
784	}
785
786	static void
787	sighandler (int signum)
788	{
789	#if _WIN32
790	signal (signum, sighandler);
791	#endif
792
793	signals [signum - 1].gotsig = 1;
794
795	if (!gotsig)
796	{
797	int old_errno = errno;
798	gotsig = 1;
799	write (sigpipe [1], &signum, 1);
800	errno = old_errno;
801	}
802	}
803
804	void noinline
805	ev_feed_signal_event (EV_P_ int signum)
806	{
807	WL w;
808
809	#if EV_MULTIPLICITY
810	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
811	#endif
812
813	--signum;
814
815	if (signum < 0 || signum >= signalmax)
816	return;
817
818	signals [signum].gotsig = 0;
819
820	for (w = signals [signum].head; w; w = w->next)
821	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
822	}
823
824	static void
825	sigcb (EV_P_ ev_io *iow, int revents)
826	{
827	int signum;
828
829	read (sigpipe [0], &revents, 1);
830	gotsig = 0;
831
832	for (signum = signalmax; signum--; )
833	if (signals [signum].gotsig)
834	ev_feed_signal_event (EV_A_ signum + 1);
835	}
836
837	void inline_speed
838	fd_intern (int fd)	1216	fd_intern (int fd)
839	{	1217	{
840	#ifdef _WIN32	1218	#ifdef _WIN32
841	int arg = 1;	1219	unsigned long arg = 1;
842	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1220	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
843	#else	1221	#else
844	fcntl (fd, F_SETFD, FD_CLOEXEC);	1222	fcntl (fd, F_SETFD, FD_CLOEXEC);
845	fcntl (fd, F_SETFL, O_NONBLOCK);	1223	fcntl (fd, F_SETFL, O_NONBLOCK);
846	#endif	1224	#endif
847	}	1225	}
848		1226
849	static void noinline
850	siginit (EV_P)
851	{
852	fd_intern (sigpipe [0]);
853	fd_intern (sigpipe [1]);
854
855	ev_io_set (&sigev, sigpipe [0], EV_READ);
856	ev_io_start (EV_A_ &sigev);
857	ev_unref (EV_A); /* child watcher should not keep loop alive */
858	}
859
860	/*****************************************************************************/	1227	/*****************************************************************************/
861		1228
		1229	/*
		1230	* the heap functions want a real array index. array index 0 is guaranteed to not
		1231	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1232	* the branching factor of the d-tree.
		1233	*/
		1234
		1235	/*
		1236	* at the moment we allow libev the luxury of two heaps,
		1237	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1238	* which is more cache-efficient.
		1239	* the difference is about 5% with 50000+ watchers.
		1240	*/
		1241	#if EV_USE_4HEAP
		1242
		1243	#define DHEAP 4
		1244	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1245	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1246	#define UPHEAP_DONE(p,k) ((p) == (k))
		1247
		1248	/* away from the root */
		1249	inline_speed void
		1250	downheap (ANHE *heap, int N, int k)
		1251	{
		1252	ANHE he = heap [k];
		1253	ANHE *E = heap + N + HEAP0;
		1254
		1255	for (;;)
		1256	{
		1257	ev_tstamp minat;
		1258	ANHE *minpos;
		1259	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1260
		1261	/* find minimum child */
		1262	if (expect_true (pos + DHEAP - 1 < E))
		1263	{
		1264	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1265	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1266	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1267	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1268	}
		1269	else if (pos < E)
		1270	{
		1271	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1272	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1273	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1274	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1275	}
		1276	else
		1277	break;
		1278
		1279	if (ANHE_at (he) <= minat)
		1280	break;
		1281
		1282	heap [k] = *minpos;
		1283	ev_active (ANHE_w (*minpos)) = k;
		1284
		1285	k = minpos - heap;
		1286	}
		1287
		1288	heap [k] = he;
		1289	ev_active (ANHE_w (he)) = k;
		1290	}
		1291
		1292	#else /* 4HEAP */
		1293
		1294	#define HEAP0 1
		1295	#define HPARENT(k) ((k) >> 1)
		1296	#define UPHEAP_DONE(p,k) (!(p))
		1297
		1298	/* away from the root */
		1299	inline_speed void
		1300	downheap (ANHE *heap, int N, int k)
		1301	{
		1302	ANHE he = heap [k];
		1303
		1304	for (;;)
		1305	{
		1306	int c = k << 1;
		1307
		1308	if (c >= N + HEAP0)
		1309	break;
		1310
		1311	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1312	? 1 : 0;
		1313
		1314	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1315	break;
		1316
		1317	heap [k] = heap [c];
		1318	ev_active (ANHE_w (heap [k])) = k;
		1319
		1320	k = c;
		1321	}
		1322
		1323	heap [k] = he;
		1324	ev_active (ANHE_w (he)) = k;
		1325	}
		1326	#endif
		1327
		1328	/* towards the root */
		1329	inline_speed void
		1330	upheap (ANHE *heap, int k)
		1331	{
		1332	ANHE he = heap [k];
		1333
		1334	for (;;)
		1335	{
		1336	int p = HPARENT (k);
		1337
		1338	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1339	break;
		1340
		1341	heap [k] = heap [p];
		1342	ev_active (ANHE_w (heap [k])) = k;
		1343	k = p;
		1344	}
		1345
		1346	heap [k] = he;
		1347	ev_active (ANHE_w (he)) = k;
		1348	}
		1349
		1350	/* move an element suitably so it is in a correct place */
		1351	inline_size void
		1352	adjustheap (ANHE *heap, int N, int k)
		1353	{
		1354	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
		1355	upheap (heap, k);
		1356	else
		1357	downheap (heap, N, k);
		1358	}
		1359
		1360	/* rebuild the heap: this function is used only once and executed rarely */
		1361	inline_size void
		1362	reheap (ANHE *heap, int N)
		1363	{
		1364	int i;
		1365
		1366	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1367	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1368	for (i = 0; i < N; ++i)
		1369	upheap (heap, i + HEAP0);
		1370	}
		1371
		1372	/*****************************************************************************/
		1373
		1374	/* associate signal watchers to a signal signal */
		1375	typedef struct
		1376	{
		1377	EV_ATOMIC_T pending;
		1378	#if EV_MULTIPLICITY
		1379	EV_P;
		1380	#endif
		1381	WL head;
		1382	} ANSIG;
		1383
		1384	static ANSIG signals [EV_NSIG - 1];
		1385
		1386	/*****************************************************************************/
		1387
		1388	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		1389
		1390	static void noinline ecb_cold
		1391	evpipe_init (EV_P)
		1392	{
		1393	if (!ev_is_active (&pipe_w))
		1394	{
		1395	# if EV_USE_EVENTFD
		1396	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1397	if (evfd < 0 && errno == EINVAL)
		1398	evfd = eventfd (0, 0);
		1399
		1400	if (evfd >= 0)
		1401	{
		1402	evpipe [0] = -1;
		1403	fd_intern (evfd); /* doing it twice doesn't hurt */
		1404	ev_io_set (&pipe_w, evfd, EV_READ);
		1405	}
		1406	else
		1407	# endif
		1408	{
		1409	while (pipe (evpipe))
		1410	ev_syserr ("(libev) error creating signal/async pipe");
		1411
		1412	fd_intern (evpipe [0]);
		1413	fd_intern (evpipe [1]);
		1414	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1415	}
		1416
		1417	ev_io_start (EV_A_ &pipe_w);
		1418	ev_unref (EV_A); /* watcher should not keep loop alive */
		1419	}
		1420	}
		1421
		1422	inline_speed void
		1423	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1424	{
		1425	if (!*flag)
		1426	{
		1427	*flag = 1;
		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	{
		1470	#if EV_USE_EVENTFD
		1471	if (evfd >= 0)
		1472	{
		1473	uint64_t counter;
		1474	read (evfd, &counter, sizeof (uint64_t));
		1475	}
		1476	else
		1477	#endif
		1478	{
		1479	char dummy;
		1480	/* see discussion in evpipe_write when you think this read should be recv in win32 */
		1481	read (evpipe [0], &dummy, 1);
		1482	}
		1483	}
		1484
		1485	pipe_write_skipped = 0;
		1486
		1487	#if EV_SIGNAL_ENABLE
		1488	if (sig_pending)
		1489	{
		1490	sig_pending = 0;
		1491
		1492	for (i = EV_NSIG - 1; i--; )
		1493	if (expect_false (signals [i].pending))
		1494	ev_feed_signal_event (EV_A_ i + 1);
		1495	}
		1496	#endif
		1497
		1498	#if EV_ASYNC_ENABLE
		1499	if (async_pending)
		1500	{
		1501	async_pending = 0;
		1502
		1503	for (i = asynccnt; i--; )
		1504	if (asyncs [i]->sent)
		1505	{
		1506	asyncs [i]->sent = 0;
		1507	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1508	}
		1509	}
		1510	#endif
		1511	}
		1512
		1513	/*****************************************************************************/
		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	evpipe_init (EV_A);
		1526
		1527	signals [signum - 1].pending = 1;
		1528	evpipe_write (EV_A_ &sig_pending);
		1529	}
		1530
		1531	static void
		1532	ev_sighandler (int signum)
		1533	{
		1534	#ifdef _WIN32
		1535	signal (signum, ev_sighandler);
		1536	#endif
		1537
		1538	ev_feed_signal (signum);
		1539	}
		1540
		1541	void noinline
		1542	ev_feed_signal_event (EV_P_ int signum)
		1543	{
		1544	WL w;
		1545
		1546	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1547	return;
		1548
		1549	--signum;
		1550
		1551	#if EV_MULTIPLICITY
		1552	/* it is permissible to try to feed a signal to the wrong loop */
		1553	/* or, likely more useful, feeding a signal nobody is waiting for */
		1554
		1555	if (expect_false (signals [signum].loop != EV_A))
		1556	return;
		1557	#endif
		1558
		1559	signals [signum].pending = 0;
		1560
		1561	for (w = signals [signum].head; w; w = w->next)
		1562	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1563	}
		1564
		1565	#if EV_USE_SIGNALFD
		1566	static void
		1567	sigfdcb (EV_P_ ev_io *iow, int revents)
		1568	{
		1569	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1570
		1571	for (;;)
		1572	{
		1573	ssize_t res = read (sigfd, si, sizeof (si));
		1574
		1575	/* not ISO-C, as res might be -1, but works with SuS */
		1576	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1577	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1578
		1579	if (res < (ssize_t)sizeof (si))
		1580	break;
		1581	}
		1582	}
		1583	#endif
		1584
		1585	#endif
		1586
		1587	/*****************************************************************************/
		1588
		1589	#if EV_CHILD_ENABLE
862	static WL childs [EV_PID_HASHSIZE];	1590	static WL childs [EV_PID_HASHSIZE];
863		1591
864	#ifndef _WIN32
865
866	static ev_signal childev;	1592	static ev_signal childev;
867		1593
868	void inline_speed	1594	#ifndef WIFCONTINUED
		1595	# define WIFCONTINUED(status) 0
		1596	#endif
		1597
		1598	/* handle a single child status event */
		1599	inline_speed void
869	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1600	child_reap (EV_P_ int chain, int pid, int status)
870	{	1601	{
871	ev_child *w;	1602	ev_child *w;
		1603	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
872		1604
873	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1605	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		1606	{
874	if (w->pid == pid || !w->pid)	1607	if ((w->pid == pid || !w->pid)
		1608	&& (!traced || (w->flags & 1)))
875	{	1609	{
876	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1610	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
877	w->rpid = pid;	1611	w->rpid = pid;
878	w->rstatus = status;	1612	w->rstatus = status;
879	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1613	ev_feed_event (EV_A_ (W)w, EV_CHILD);
880	}	1614	}
		1615	}
881	}	1616	}
882		1617
883	#ifndef WCONTINUED	1618	#ifndef WCONTINUED
884	# define WCONTINUED 0	1619	# define WCONTINUED 0
885	#endif	1620	#endif
886		1621
		1622	/* called on sigchld etc., calls waitpid */
887	static void	1623	static void
888	childcb (EV_P_ ev_signal *sw, int revents)	1624	childcb (EV_P_ ev_signal *sw, int revents)
889	{	1625	{
890	int pid, status;	1626	int pid, status;
891		1627
…		…
894	if (!WCONTINUED	1630	if (!WCONTINUED
895	|| errno != EINVAL	1631	|| errno != EINVAL
896	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1632	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
897	return;	1633	return;
898		1634
899	/* make sure we are called again until all childs have been reaped */	1635	/* make sure we are called again until all children have been reaped */
900	/* we need to do it this way so that the callback gets called before we continue */	1636	/* we need to do it this way so that the callback gets called before we continue */
901	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1637	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
902		1638
903	child_reap (EV_A_ sw, pid, pid, status);	1639	child_reap (EV_A_ pid, pid, status);
904	if (EV_PID_HASHSIZE > 1)	1640	if ((EV_PID_HASHSIZE) > 1)
905	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1641	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
906	}	1642	}
907		1643
908	#endif	1644	#endif
909		1645
910	/*****************************************************************************/	1646	/*****************************************************************************/
911		1647
		1648	#if EV_USE_IOCP
		1649	# include "ev_iocp.c"
		1650	#endif
912	#if EV_USE_PORT	1651	#if EV_USE_PORT
913	# include "ev_port.c"	1652	# include "ev_port.c"
914	#endif	1653	#endif
915	#if EV_USE_KQUEUE	1654	#if EV_USE_KQUEUE
916	# include "ev_kqueue.c"	1655	# include "ev_kqueue.c"
…		…
923	#endif	1662	#endif
924	#if EV_USE_SELECT	1663	#if EV_USE_SELECT
925	# include "ev_select.c"	1664	# include "ev_select.c"
926	#endif	1665	#endif
927		1666
928	int	1667	int ecb_cold
929	ev_version_major (void)	1668	ev_version_major (void)
930	{	1669	{
931	return EV_VERSION_MAJOR;	1670	return EV_VERSION_MAJOR;
932	}	1671	}
933		1672
934	int	1673	int ecb_cold
935	ev_version_minor (void)	1674	ev_version_minor (void)
936	{	1675	{
937	return EV_VERSION_MINOR;	1676	return EV_VERSION_MINOR;
938	}	1677	}
939		1678
940	/* return true if we are running with elevated privileges and should ignore env variables */	1679	/* return true if we are running with elevated privileges and should ignore env variables */
941	int inline_size	1680	int inline_size ecb_cold
942	enable_secure (void)	1681	enable_secure (void)
943	{	1682	{
944	#ifdef _WIN32	1683	#ifdef _WIN32
945	return 0;	1684	return 0;
946	#else	1685	#else
947	return getuid () != geteuid ()	1686	return getuid () != geteuid ()
948	|| getgid () != getegid ();	1687	|| getgid () != getegid ();
949	#endif	1688	#endif
950	}	1689	}
951		1690
952	unsigned int	1691	unsigned int ecb_cold
953	ev_supported_backends (void)	1692	ev_supported_backends (void)
954	{	1693	{
955	unsigned int flags = 0;	1694	unsigned int flags = 0;
956		1695
957	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1696	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
961	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1700	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
962		1701
963	return flags;	1702	return flags;
964	}	1703	}
965		1704
966	unsigned int	1705	unsigned int ecb_cold
967	ev_recommended_backends (void)	1706	ev_recommended_backends (void)
968	{	1707	{
969	unsigned int flags = ev_supported_backends ();	1708	unsigned int flags = ev_supported_backends ();
970		1709
971	#ifndef __NetBSD__	1710	#ifndef __NetBSD__
972	/* kqueue is borked on everything but netbsd apparently */	1711	/* kqueue is borked on everything but netbsd apparently */
973	/* it usually doesn't work correctly on anything but sockets and pipes */	1712	/* it usually doesn't work correctly on anything but sockets and pipes */
974	flags &= ~EVBACKEND_KQUEUE;	1713	flags &= ~EVBACKEND_KQUEUE;
975	#endif	1714	#endif
976	#ifdef __APPLE__	1715	#ifdef __APPLE__
977	// flags &= ~EVBACKEND_KQUEUE; for documentation	1716	/* only select works correctly on that "unix-certified" platform */
978	flags &= ~EVBACKEND_POLL;	1717	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1718	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		1719	#endif
		1720	#ifdef __FreeBSD__
		1721	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
979	#endif	1722	#endif
980		1723
981	return flags;	1724	return flags;
982	}	1725	}
983		1726
984	unsigned int	1727	unsigned int ecb_cold
985	ev_embeddable_backends (void)	1728	ev_embeddable_backends (void)
986	{	1729	{
987	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1730	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
988		1731
989	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1732	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
990	/* please fix it and tell me how to detect the fix */	1733	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
991	flags &= ~EVBACKEND_EPOLL;	1734	flags &= ~EVBACKEND_EPOLL;
992		1735
993	return flags;	1736	return flags;
994	}	1737	}
995		1738
996	unsigned int	1739	unsigned int
997	ev_backend (EV_P)	1740	ev_backend (EV_P)
998	{	1741	{
999	return backend;	1742	return backend;
1000	}	1743	}
1001		1744
		1745	#if EV_FEATURE_API
1002	unsigned int	1746	unsigned int
1003	ev_loop_count (EV_P)	1747	ev_iteration (EV_P)
1004	{	1748	{
1005	return loop_count;	1749	return loop_count;
		1750	}
		1751
		1752	unsigned int
		1753	ev_depth (EV_P)
		1754	{
		1755	return loop_depth;
1006	}	1756	}
1007		1757
1008	void	1758	void
1009	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1759	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1010	{	1760	{
…		…
1015	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1765	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1016	{	1766	{
1017	timeout_blocktime = interval;	1767	timeout_blocktime = interval;
1018	}	1768	}
1019		1769
		1770	void
		1771	ev_set_userdata (EV_P_ void *data)
		1772	{
		1773	userdata = data;
		1774	}
		1775
		1776	void *
		1777	ev_userdata (EV_P)
		1778	{
		1779	return userdata;
		1780	}
		1781
		1782	void
		1783	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1784	{
		1785	invoke_cb = invoke_pending_cb;
		1786	}
		1787
		1788	void
		1789	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1790	{
		1791	release_cb = release;
		1792	acquire_cb = acquire;
		1793	}
		1794	#endif
		1795
		1796	/* initialise a loop structure, must be zero-initialised */
1020	static void noinline	1797	static void noinline ecb_cold
1021	loop_init (EV_P_ unsigned int flags)	1798	loop_init (EV_P_ unsigned int flags)
1022	{	1799	{
1023	if (!backend)	1800	if (!backend)
1024	{	1801	{
		1802	origflags = flags;
		1803
		1804	#if EV_USE_REALTIME
		1805	if (!have_realtime)
		1806	{
		1807	struct timespec ts;
		1808
		1809	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1810	have_realtime = 1;
		1811	}
		1812	#endif
		1813
1025	#if EV_USE_MONOTONIC	1814	#if EV_USE_MONOTONIC
		1815	if (!have_monotonic)
1026	{	1816	{
1027	struct timespec ts;	1817	struct timespec ts;
		1818
1028	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1819	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1029	have_monotonic = 1;	1820	have_monotonic = 1;
1030	}	1821	}
1031	#endif	1822	#endif
1032
1033	ev_rt_now = ev_time ();
1034	mn_now = get_clock ();
1035	now_floor = mn_now;
1036	rtmn_diff = ev_rt_now - mn_now;
1037
1038	io_blocktime = 0.;
1039	timeout_blocktime = 0.;
1040		1823
1041	/* pid check not overridable via env */	1824	/* pid check not overridable via env */
1042	#ifndef _WIN32	1825	#ifndef _WIN32
1043	if (flags & EVFLAG_FORKCHECK)	1826	if (flags & EVFLAG_FORKCHECK)
1044	curpid = getpid ();	1827	curpid = getpid ();
…		…
1047	if (!(flags & EVFLAG_NOENV)	1830	if (!(flags & EVFLAG_NOENV)
1048	&& !enable_secure ()	1831	&& !enable_secure ()
1049	&& getenv ("LIBEV_FLAGS"))	1832	&& getenv ("LIBEV_FLAGS"))
1050	flags = atoi (getenv ("LIBEV_FLAGS"));	1833	flags = atoi (getenv ("LIBEV_FLAGS"));
1051		1834
1052	if (!(flags & 0x0000ffffUL))	1835	ev_rt_now = ev_time ();
		1836	mn_now = get_clock ();
		1837	now_floor = mn_now;
		1838	rtmn_diff = ev_rt_now - mn_now;
		1839	#if EV_FEATURE_API
		1840	invoke_cb = ev_invoke_pending;
		1841	#endif
		1842
		1843	io_blocktime = 0.;
		1844	timeout_blocktime = 0.;
		1845	backend = 0;
		1846	backend_fd = -1;
		1847	sig_pending = 0;
		1848	#if EV_ASYNC_ENABLE
		1849	async_pending = 0;
		1850	#endif
		1851	pipe_write_skipped = 0;
		1852	pipe_write_wanted = 0;
		1853	#if EV_USE_INOTIFY
		1854	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		1855	#endif
		1856	#if EV_USE_SIGNALFD
		1857	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		1858	#endif
		1859
		1860	if (!(flags & EVBACKEND_MASK))
1053	flags |= ev_recommended_backends ();	1861	flags |= ev_recommended_backends ();
1054		1862
1055	backend = 0;
1056	backend_fd = -1;
1057	#if EV_USE_INOTIFY	1863	#if EV_USE_IOCP
1058	fs_fd = -2;	1864	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1059	#endif	1865	#endif
1060
1061	#if EV_USE_PORT	1866	#if EV_USE_PORT
1062	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1867	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1063	#endif	1868	#endif
1064	#if EV_USE_KQUEUE	1869	#if EV_USE_KQUEUE
1065	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1870	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1072	#endif	1877	#endif
1073	#if EV_USE_SELECT	1878	#if EV_USE_SELECT
1074	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1879	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1075	#endif	1880	#endif
1076		1881
		1882	ev_prepare_init (&pending_w, pendingcb);
		1883
		1884	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1077	ev_init (&sigev, sigcb);	1885	ev_init (&pipe_w, pipecb);
1078	ev_set_priority (&sigev, EV_MAXPRI);	1886	ev_set_priority (&pipe_w, EV_MAXPRI);
		1887	#endif
1079	}	1888	}
1080	}	1889	}
1081		1890
1082	static void noinline	1891	/* free up a loop structure */
		1892	void ecb_cold
1083	loop_destroy (EV_P)	1893	ev_loop_destroy (EV_P)
1084	{	1894	{
1085	int i;	1895	int i;
		1896
		1897	#if EV_MULTIPLICITY
		1898	/* mimic free (0) */
		1899	if (!EV_A)
		1900	return;
		1901	#endif
		1902
		1903	#if EV_CLEANUP_ENABLE
		1904	/* queue cleanup watchers (and execute them) */
		1905	if (expect_false (cleanupcnt))
		1906	{
		1907	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1908	EV_INVOKE_PENDING;
		1909	}
		1910	#endif
		1911
		1912	#if EV_CHILD_ENABLE
		1913	if (ev_is_active (&childev))
		1914	{
		1915	ev_ref (EV_A); /* child watcher */
		1916	ev_signal_stop (EV_A_ &childev);
		1917	}
		1918	#endif
		1919
		1920	if (ev_is_active (&pipe_w))
		1921	{
		1922	/*ev_ref (EV_A);*/
		1923	/*ev_io_stop (EV_A_ &pipe_w);*/
		1924
		1925	#if EV_USE_EVENTFD
		1926	if (evfd >= 0)
		1927	close (evfd);
		1928	#endif
		1929
		1930	if (evpipe [0] >= 0)
		1931	{
		1932	EV_WIN32_CLOSE_FD (evpipe [0]);
		1933	EV_WIN32_CLOSE_FD (evpipe [1]);
		1934	}
		1935	}
		1936
		1937	#if EV_USE_SIGNALFD
		1938	if (ev_is_active (&sigfd_w))
		1939	close (sigfd);
		1940	#endif
1086		1941
1087	#if EV_USE_INOTIFY	1942	#if EV_USE_INOTIFY
1088	if (fs_fd >= 0)	1943	if (fs_fd >= 0)
1089	close (fs_fd);	1944	close (fs_fd);
1090	#endif	1945	#endif
1091		1946
1092	if (backend_fd >= 0)	1947	if (backend_fd >= 0)
1093	close (backend_fd);	1948	close (backend_fd);
1094		1949
		1950	#if EV_USE_IOCP
		1951	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1952	#endif
1095	#if EV_USE_PORT	1953	#if EV_USE_PORT
1096	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1954	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1097	#endif	1955	#endif
1098	#if EV_USE_KQUEUE	1956	#if EV_USE_KQUEUE
1099	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1957	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1114	#if EV_IDLE_ENABLE	1972	#if EV_IDLE_ENABLE
1115	array_free (idle, [i]);	1973	array_free (idle, [i]);
1116	#endif	1974	#endif
1117	}	1975	}
1118		1976
1119	ev_free (anfds); anfdmax = 0;	1977	ev_free (anfds); anfds = 0; anfdmax = 0;
1120		1978
1121	/* have to use the microsoft-never-gets-it-right macro */	1979	/* have to use the microsoft-never-gets-it-right macro */
		1980	array_free (rfeed, EMPTY);
1122	array_free (fdchange, EMPTY);	1981	array_free (fdchange, EMPTY);
1123	array_free (timer, EMPTY);	1982	array_free (timer, EMPTY);
1124	#if EV_PERIODIC_ENABLE	1983	#if EV_PERIODIC_ENABLE
1125	array_free (periodic, EMPTY);	1984	array_free (periodic, EMPTY);
1126	#endif	1985	#endif
1127	#if EV_FORK_ENABLE	1986	#if EV_FORK_ENABLE
1128	array_free (fork, EMPTY);	1987	array_free (fork, EMPTY);
1129	#endif	1988	#endif
		1989	#if EV_CLEANUP_ENABLE
		1990	array_free (cleanup, EMPTY);
		1991	#endif
1130	array_free (prepare, EMPTY);	1992	array_free (prepare, EMPTY);
1131	array_free (check, EMPTY);	1993	array_free (check, EMPTY);
		1994	#if EV_ASYNC_ENABLE
		1995	array_free (async, EMPTY);
		1996	#endif
1132		1997
1133	backend = 0;	1998	backend = 0;
1134	}
1135		1999
		2000	#if EV_MULTIPLICITY
		2001	if (ev_is_default_loop (EV_A))
		2002	#endif
		2003	ev_default_loop_ptr = 0;
		2004	#if EV_MULTIPLICITY
		2005	else
		2006	ev_free (EV_A);
		2007	#endif
		2008	}
		2009
		2010	#if EV_USE_INOTIFY
1136	void inline_size infy_fork (EV_P);	2011	inline_size void infy_fork (EV_P);
		2012	#endif
1137		2013
1138	void inline_size	2014	inline_size void
1139	loop_fork (EV_P)	2015	loop_fork (EV_P)
1140	{	2016	{
1141	#if EV_USE_PORT	2017	#if EV_USE_PORT
1142	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	2018	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1143	#endif	2019	#endif
…		…
1149	#endif	2025	#endif
1150	#if EV_USE_INOTIFY	2026	#if EV_USE_INOTIFY
1151	infy_fork (EV_A);	2027	infy_fork (EV_A);
1152	#endif	2028	#endif
1153		2029
1154	if (ev_is_active (&sigev))	2030	if (ev_is_active (&pipe_w))
1155	{	2031	{
1156	/* default loop */	2032	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1157		2033
1158	ev_ref (EV_A);	2034	ev_ref (EV_A);
1159	ev_io_stop (EV_A_ &sigev);	2035	ev_io_stop (EV_A_ &pipe_w);
1160	close (sigpipe [0]);
1161	close (sigpipe [1]);
1162		2036
1163	while (pipe (sigpipe))	2037	#if EV_USE_EVENTFD
1164	syserr ("(libev) error creating pipe");	2038	if (evfd >= 0)
		2039	close (evfd);
		2040	#endif
1165		2041
		2042	if (evpipe [0] >= 0)
		2043	{
		2044	EV_WIN32_CLOSE_FD (evpipe [0]);
		2045	EV_WIN32_CLOSE_FD (evpipe [1]);
		2046	}
		2047
		2048	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1166	siginit (EV_A);	2049	evpipe_init (EV_A);
		2050	/* now iterate over everything, in case we missed something */
		2051	pipecb (EV_A_ &pipe_w, EV_READ);
		2052	#endif
1167	}	2053	}
1168		2054
1169	postfork = 0;	2055	postfork = 0;
1170	}	2056	}
1171		2057
1172	#if EV_MULTIPLICITY	2058	#if EV_MULTIPLICITY
		2059
1173	struct ev_loop *	2060	struct ev_loop * ecb_cold
1174	ev_loop_new (unsigned int flags)	2061	ev_loop_new (unsigned int flags)
1175	{	2062	{
1176	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2063	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1177		2064
1178	memset (loop, 0, sizeof (struct ev_loop));	2065	memset (EV_A, 0, sizeof (struct ev_loop));
1179
1180	loop_init (EV_A_ flags);	2066	loop_init (EV_A_ flags);
1181		2067
1182	if (ev_backend (EV_A))	2068	if (ev_backend (EV_A))
1183	return loop;	2069	return EV_A;
1184		2070
		2071	ev_free (EV_A);
1185	return 0;	2072	return 0;
1186	}	2073	}
1187		2074
1188	void	2075	#endif /* multiplicity */
1189	ev_loop_destroy (EV_P)
1190	{
1191	loop_destroy (EV_A);
1192	ev_free (loop);
1193	}
1194		2076
1195	void	2077	#if EV_VERIFY
1196	ev_loop_fork (EV_P)	2078	static void noinline ecb_cold
		2079	verify_watcher (EV_P_ W w)
1197	{	2080	{
1198	postfork = 1;	2081	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1199	}
1200		2082
		2083	if (w->pending)
		2084	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		2085	}
		2086
		2087	static void noinline ecb_cold
		2088	verify_heap (EV_P_ ANHE *heap, int N)
		2089	{
		2090	int i;
		2091
		2092	for (i = HEAP0; i < N + HEAP0; ++i)
		2093	{
		2094	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		2095	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		2096	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		2097
		2098	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		2099	}
		2100	}
		2101
		2102	static void noinline ecb_cold
		2103	array_verify (EV_P_ W *ws, int cnt)
		2104	{
		2105	while (cnt--)
		2106	{
		2107	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		2108	verify_watcher (EV_A_ ws [cnt]);
		2109	}
		2110	}
		2111	#endif
		2112
		2113	#if EV_FEATURE_API
		2114	void ecb_cold
		2115	ev_verify (EV_P)
		2116	{
		2117	#if EV_VERIFY
		2118	int i;
		2119	WL w;
		2120
		2121	assert (activecnt >= -1);
		2122
		2123	assert (fdchangemax >= fdchangecnt);
		2124	for (i = 0; i < fdchangecnt; ++i)
		2125	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		2126
		2127	assert (anfdmax >= 0);
		2128	for (i = 0; i < anfdmax; ++i)
		2129	for (w = anfds [i].head; w; w = w->next)
		2130	{
		2131	verify_watcher (EV_A_ (W)w);
		2132	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		2133	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		2134	}
		2135
		2136	assert (timermax >= timercnt);
		2137	verify_heap (EV_A_ timers, timercnt);
		2138
		2139	#if EV_PERIODIC_ENABLE
		2140	assert (periodicmax >= periodiccnt);
		2141	verify_heap (EV_A_ periodics, periodiccnt);
		2142	#endif
		2143
		2144	for (i = NUMPRI; i--; )
		2145	{
		2146	assert (pendingmax [i] >= pendingcnt [i]);
		2147	#if EV_IDLE_ENABLE
		2148	assert (idleall >= 0);
		2149	assert (idlemax [i] >= idlecnt [i]);
		2150	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		2151	#endif
		2152	}
		2153
		2154	#if EV_FORK_ENABLE
		2155	assert (forkmax >= forkcnt);
		2156	array_verify (EV_A_ (W *)forks, forkcnt);
		2157	#endif
		2158
		2159	#if EV_CLEANUP_ENABLE
		2160	assert (cleanupmax >= cleanupcnt);
		2161	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2162	#endif
		2163
		2164	#if EV_ASYNC_ENABLE
		2165	assert (asyncmax >= asynccnt);
		2166	array_verify (EV_A_ (W *)asyncs, asynccnt);
		2167	#endif
		2168
		2169	#if EV_PREPARE_ENABLE
		2170	assert (preparemax >= preparecnt);
		2171	array_verify (EV_A_ (W *)prepares, preparecnt);
		2172	#endif
		2173
		2174	#if EV_CHECK_ENABLE
		2175	assert (checkmax >= checkcnt);
		2176	array_verify (EV_A_ (W *)checks, checkcnt);
		2177	#endif
		2178
		2179	# if 0
		2180	#if EV_CHILD_ENABLE
		2181	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		2182	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		2183	#endif
		2184	# endif
		2185	#endif
		2186	}
1201	#endif	2187	#endif
1202		2188
1203	#if EV_MULTIPLICITY	2189	#if EV_MULTIPLICITY
1204	struct ev_loop *	2190	struct ev_loop * ecb_cold
1205	ev_default_loop_init (unsigned int flags)
1206	#else	2191	#else
1207	int	2192	int
		2193	#endif
1208	ev_default_loop (unsigned int flags)	2194	ev_default_loop (unsigned int flags)
1209	#endif
1210	{	2195	{
1211	if (sigpipe [0] == sigpipe [1])
1212	if (pipe (sigpipe))
1213	return 0;
1214
1215	if (!ev_default_loop_ptr)	2196	if (!ev_default_loop_ptr)
1216	{	2197	{
1217	#if EV_MULTIPLICITY	2198	#if EV_MULTIPLICITY
1218	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2199	EV_P = ev_default_loop_ptr = &default_loop_struct;
1219	#else	2200	#else
1220	ev_default_loop_ptr = 1;	2201	ev_default_loop_ptr = 1;
1221	#endif	2202	#endif
1222		2203
1223	loop_init (EV_A_ flags);	2204	loop_init (EV_A_ flags);
1224		2205
1225	if (ev_backend (EV_A))	2206	if (ev_backend (EV_A))
1226	{	2207	{
1227	siginit (EV_A);	2208	#if EV_CHILD_ENABLE
1228
1229	#ifndef _WIN32
1230	ev_signal_init (&childev, childcb, SIGCHLD);	2209	ev_signal_init (&childev, childcb, SIGCHLD);
1231	ev_set_priority (&childev, EV_MAXPRI);	2210	ev_set_priority (&childev, EV_MAXPRI);
1232	ev_signal_start (EV_A_ &childev);	2211	ev_signal_start (EV_A_ &childev);
1233	ev_unref (EV_A); /* child watcher should not keep loop alive */	2212	ev_unref (EV_A); /* child watcher should not keep loop alive */
1234	#endif	2213	#endif
…		…
1239		2218
1240	return ev_default_loop_ptr;	2219	return ev_default_loop_ptr;
1241	}	2220	}
1242		2221
1243	void	2222	void
1244	ev_default_destroy (void)	2223	ev_loop_fork (EV_P)
1245	{	2224	{
1246	#if EV_MULTIPLICITY	2225	postfork = 1; /* must be in line with ev_default_fork */
1247	struct ev_loop *loop = ev_default_loop_ptr;
1248	#endif
1249
1250	#ifndef _WIN32
1251	ev_ref (EV_A); /* child watcher */
1252	ev_signal_stop (EV_A_ &childev);
1253	#endif
1254
1255	ev_ref (EV_A); /* signal watcher */
1256	ev_io_stop (EV_A_ &sigev);
1257
1258	close (sigpipe [0]); sigpipe [0] = 0;
1259	close (sigpipe [1]); sigpipe [1] = 0;
1260
1261	loop_destroy (EV_A);
1262	}
1263
1264	void
1265	ev_default_fork (void)
1266	{
1267	#if EV_MULTIPLICITY
1268	struct ev_loop *loop = ev_default_loop_ptr;
1269	#endif
1270
1271	if (backend)
1272	postfork = 1;
1273	}	2226	}
1274		2227
1275	/*****************************************************************************/	2228	/*****************************************************************************/
1276		2229
1277	void	2230	void
1278	ev_invoke (EV_P_ void *w, int revents)	2231	ev_invoke (EV_P_ void *w, int revents)
1279	{	2232	{
1280	EV_CB_INVOKE ((W)w, revents);	2233	EV_CB_INVOKE ((W)w, revents);
1281	}	2234	}
1282		2235
1283	void inline_speed	2236	unsigned int
1284	call_pending (EV_P)	2237	ev_pending_count (EV_P)
		2238	{
		2239	int pri;
		2240	unsigned int count = 0;
		2241
		2242	for (pri = NUMPRI; pri--; )
		2243	count += pendingcnt [pri];
		2244
		2245	return count;
		2246	}
		2247
		2248	void noinline
		2249	ev_invoke_pending (EV_P)
1285	{	2250	{
1286	int pri;	2251	int pri;
1287		2252
1288	for (pri = NUMPRI; pri--; )	2253	for (pri = NUMPRI; pri--; )
1289	while (pendingcnt [pri])	2254	while (pendingcnt [pri])
1290	{	2255	{
1291	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2256	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1292		2257
1293	if (expect_true (p->w))
1294	{
1295	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1296
1297	p->w->pending = 0;	2258	p->w->pending = 0;
1298	EV_CB_INVOKE (p->w, p->events);	2259	EV_CB_INVOKE (p->w, p->events);
1299	}	2260	EV_FREQUENT_CHECK;
1300	}	2261	}
1301	}	2262	}
1302		2263
1303	void inline_size
1304	timers_reify (EV_P)
1305	{
1306	while (timercnt && ((WT)timers [0])->at <= mn_now)
1307	{
1308	ev_timer *w = (ev_timer *)timers [0];
1309
1310	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1311
1312	/* first reschedule or stop timer */
1313	if (w->repeat)
1314	{
1315	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1316
1317	((WT)w)->at += w->repeat;
1318	if (((WT)w)->at < mn_now)
1319	((WT)w)->at = mn_now;
1320
1321	downheap (timers, timercnt, 0);
1322	}
1323	else
1324	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1325
1326	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1327	}
1328	}
1329
1330	#if EV_PERIODIC_ENABLE
1331	void inline_size
1332	periodics_reify (EV_P)
1333	{
1334	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1335	{
1336	ev_periodic *w = (ev_periodic *)periodics [0];
1337
1338	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1339
1340	/* first reschedule or stop timer */
1341	if (w->reschedule_cb)
1342	{
1343	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1344	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1345	downheap (periodics, periodiccnt, 0);
1346	}
1347	else if (w->interval)
1348	{
1349	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1350	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1351	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1352	downheap (periodics, periodiccnt, 0);
1353	}
1354	else
1355	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1356
1357	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1358	}
1359	}
1360
1361	static void noinline
1362	periodics_reschedule (EV_P)
1363	{
1364	int i;
1365
1366	/* adjust periodics after time jump */
1367	for (i = 0; i < periodiccnt; ++i)
1368	{
1369	ev_periodic *w = (ev_periodic *)periodics [i];
1370
1371	if (w->reschedule_cb)
1372	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1373	else if (w->interval)
1374	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1375	}
1376
1377	/* now rebuild the heap */
1378	for (i = periodiccnt >> 1; i--; )
1379	downheap (periodics, periodiccnt, i);
1380	}
1381	#endif
1382
1383	#if EV_IDLE_ENABLE	2264	#if EV_IDLE_ENABLE
1384	void inline_size	2265	/* make idle watchers pending. this handles the "call-idle */
		2266	/* only when higher priorities are idle" logic */
		2267	inline_size void
1385	idle_reify (EV_P)	2268	idle_reify (EV_P)
1386	{	2269	{
1387	if (expect_false (idleall))	2270	if (expect_false (idleall))
1388	{	2271	{
1389	int pri;	2272	int pri;
…		…
1401	}	2284	}
1402	}	2285	}
1403	}	2286	}
1404	#endif	2287	#endif
1405		2288
1406	void inline_speed	2289	/* make timers pending */
		2290	inline_size void
		2291	timers_reify (EV_P)
		2292	{
		2293	EV_FREQUENT_CHECK;
		2294
		2295	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2296	{
		2297	do
		2298	{
		2299	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2300
		2301	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2302
		2303	/* first reschedule or stop timer */
		2304	if (w->repeat)
		2305	{
		2306	ev_at (w) += w->repeat;
		2307	if (ev_at (w) < mn_now)
		2308	ev_at (w) = mn_now;
		2309
		2310	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2311
		2312	ANHE_at_cache (timers [HEAP0]);
		2313	downheap (timers, timercnt, HEAP0);
		2314	}
		2315	else
		2316	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2317
		2318	EV_FREQUENT_CHECK;
		2319	feed_reverse (EV_A_ (W)w);
		2320	}
		2321	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2322
		2323	feed_reverse_done (EV_A_ EV_TIMER);
		2324	}
		2325	}
		2326
		2327	#if EV_PERIODIC_ENABLE
		2328
		2329	static void noinline
		2330	periodic_recalc (EV_P_ ev_periodic *w)
		2331	{
		2332	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2333	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2334
		2335	/* the above almost always errs on the low side */
		2336	while (at <= ev_rt_now)
		2337	{
		2338	ev_tstamp nat = at + w->interval;
		2339
		2340	/* when resolution fails us, we use ev_rt_now */
		2341	if (expect_false (nat == at))
		2342	{
		2343	at = ev_rt_now;
		2344	break;
		2345	}
		2346
		2347	at = nat;
		2348	}
		2349
		2350	ev_at (w) = at;
		2351	}
		2352
		2353	/* make periodics pending */
		2354	inline_size void
		2355	periodics_reify (EV_P)
		2356	{
		2357	EV_FREQUENT_CHECK;
		2358
		2359	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2360	{
		2361	int feed_count = 0;
		2362
		2363	do
		2364	{
		2365	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2366
		2367	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2368
		2369	/* first reschedule or stop timer */
		2370	if (w->reschedule_cb)
		2371	{
		2372	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2373
		2374	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2375
		2376	ANHE_at_cache (periodics [HEAP0]);
		2377	downheap (periodics, periodiccnt, HEAP0);
		2378	}
		2379	else if (w->interval)
		2380	{
		2381	periodic_recalc (EV_A_ w);
		2382	ANHE_at_cache (periodics [HEAP0]);
		2383	downheap (periodics, periodiccnt, HEAP0);
		2384	}
		2385	else
		2386	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2387
		2388	EV_FREQUENT_CHECK;
		2389	feed_reverse (EV_A_ (W)w);
		2390	}
		2391	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2392
		2393	feed_reverse_done (EV_A_ EV_PERIODIC);
		2394	}
		2395	}
		2396
		2397	/* simply recalculate all periodics */
		2398	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		2399	static void noinline ecb_cold
		2400	periodics_reschedule (EV_P)
		2401	{
		2402	int i;
		2403
		2404	/* adjust periodics after time jump */
		2405	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2406	{
		2407	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2408
		2409	if (w->reschedule_cb)
		2410	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2411	else if (w->interval)
		2412	periodic_recalc (EV_A_ w);
		2413
		2414	ANHE_at_cache (periodics [i]);
		2415	}
		2416
		2417	reheap (periodics, periodiccnt);
		2418	}
		2419	#endif
		2420
		2421	/* adjust all timers by a given offset */
		2422	static void noinline ecb_cold
		2423	timers_reschedule (EV_P_ ev_tstamp adjust)
		2424	{
		2425	int i;
		2426
		2427	for (i = 0; i < timercnt; ++i)
		2428	{
		2429	ANHE *he = timers + i + HEAP0;
		2430	ANHE_w (*he)->at += adjust;
		2431	ANHE_at_cache (*he);
		2432	}
		2433	}
		2434
		2435	/* fetch new monotonic and realtime times from the kernel */
		2436	/* also detect if there was a timejump, and act accordingly */
		2437	inline_speed void
1407	time_update (EV_P_ ev_tstamp max_block)	2438	time_update (EV_P_ ev_tstamp max_block)
1408	{	2439	{
1409	int i;
1410
1411	#if EV_USE_MONOTONIC	2440	#if EV_USE_MONOTONIC
1412	if (expect_true (have_monotonic))	2441	if (expect_true (have_monotonic))
1413	{	2442	{
		2443	int i;
1414	ev_tstamp odiff = rtmn_diff;	2444	ev_tstamp odiff = rtmn_diff;
1415		2445
1416	mn_now = get_clock ();	2446	mn_now = get_clock ();
1417		2447
1418	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2448	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1434	* doesn't hurt either as we only do this on time-jumps or	2464	* doesn't hurt either as we only do this on time-jumps or
1435	* in the unlikely event of having been preempted here.	2465	* in the unlikely event of having been preempted here.
1436	*/	2466	*/
1437	for (i = 4; --i; )	2467	for (i = 4; --i; )
1438	{	2468	{
		2469	ev_tstamp diff;
1439	rtmn_diff = ev_rt_now - mn_now;	2470	rtmn_diff = ev_rt_now - mn_now;
1440		2471
1441	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2472	diff = odiff - rtmn_diff;
		2473
		2474	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1442	return; /* all is well */	2475	return; /* all is well */
1443		2476
1444	ev_rt_now = ev_time ();	2477	ev_rt_now = ev_time ();
1445	mn_now = get_clock ();	2478	mn_now = get_clock ();
1446	now_floor = mn_now;	2479	now_floor = mn_now;
1447	}	2480	}
1448		2481
		2482	/* no timer adjustment, as the monotonic clock doesn't jump */
		2483	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1449	# if EV_PERIODIC_ENABLE	2484	# if EV_PERIODIC_ENABLE
1450	periodics_reschedule (EV_A);	2485	periodics_reschedule (EV_A);
1451	# endif	2486	# endif
1452	/* no timer adjustment, as the monotonic clock doesn't jump */
1453	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1454	}	2487	}
1455	else	2488	else
1456	#endif	2489	#endif
1457	{	2490	{
1458	ev_rt_now = ev_time ();	2491	ev_rt_now = ev_time ();
1459		2492
1460	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2493	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1461	{	2494	{
		2495	/* adjust timers. this is easy, as the offset is the same for all of them */
		2496	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1462	#if EV_PERIODIC_ENABLE	2497	#if EV_PERIODIC_ENABLE
1463	periodics_reschedule (EV_A);	2498	periodics_reschedule (EV_A);
1464	#endif	2499	#endif
1465	/* adjust timers. this is easy, as the offset is the same for all of them */
1466	for (i = 0; i < timercnt; ++i)
1467	((WT)timers [i])->at += ev_rt_now - mn_now;
1468	}	2500	}
1469		2501
1470	mn_now = ev_rt_now;	2502	mn_now = ev_rt_now;
1471	}	2503	}
1472	}	2504	}
1473		2505
1474	void	2506	void
1475	ev_ref (EV_P)
1476	{
1477	++activecnt;
1478	}
1479
1480	void
1481	ev_unref (EV_P)
1482	{
1483	--activecnt;
1484	}
1485
1486	static int loop_done;
1487
1488	void
1489	ev_loop (EV_P_ int flags)	2507	ev_run (EV_P_ int flags)
1490	{	2508	{
1491	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2509	#if EV_FEATURE_API
1492	? EVUNLOOP_ONE	2510	++loop_depth;
1493	: EVUNLOOP_CANCEL;	2511	#endif
1494		2512
		2513	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		2514
		2515	loop_done = EVBREAK_CANCEL;
		2516
1495	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2517	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1496		2518
1497	do	2519	do
1498	{	2520	{
		2521	#if EV_VERIFY >= 2
		2522	ev_verify (EV_A);
		2523	#endif
		2524
1499	#ifndef _WIN32	2525	#ifndef _WIN32
1500	if (expect_false (curpid)) /* penalise the forking check even more */	2526	if (expect_false (curpid)) /* penalise the forking check even more */
1501	if (expect_false (getpid () != curpid))	2527	if (expect_false (getpid () != curpid))
1502	{	2528	{
1503	curpid = getpid ();	2529	curpid = getpid ();
…		…
1509	/* we might have forked, so queue fork handlers */	2535	/* we might have forked, so queue fork handlers */
1510	if (expect_false (postfork))	2536	if (expect_false (postfork))
1511	if (forkcnt)	2537	if (forkcnt)
1512	{	2538	{
1513	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2539	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1514	call_pending (EV_A);	2540	EV_INVOKE_PENDING;
1515	}	2541	}
1516	#endif	2542	#endif
1517		2543
		2544	#if EV_PREPARE_ENABLE
1518	/* queue prepare watchers (and execute them) */	2545	/* queue prepare watchers (and execute them) */
1519	if (expect_false (preparecnt))	2546	if (expect_false (preparecnt))
1520	{	2547	{
1521	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2548	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1522	call_pending (EV_A);	2549	EV_INVOKE_PENDING;
1523	}	2550	}
		2551	#endif
1524		2552
1525	if (expect_false (!activecnt))	2553	if (expect_false (loop_done))
1526	break;	2554	break;
1527		2555
1528	/* we might have forked, so reify kernel state if necessary */	2556	/* we might have forked, so reify kernel state if necessary */
1529	if (expect_false (postfork))	2557	if (expect_false (postfork))
1530	loop_fork (EV_A);	2558	loop_fork (EV_A);
…		…
1535	/* calculate blocking time */	2563	/* calculate blocking time */
1536	{	2564	{
1537	ev_tstamp waittime = 0.;	2565	ev_tstamp waittime = 0.;
1538	ev_tstamp sleeptime = 0.;	2566	ev_tstamp sleeptime = 0.;
1539		2567
		2568	/* remember old timestamp for io_blocktime calculation */
		2569	ev_tstamp prev_mn_now = mn_now;
		2570
		2571	/* update time to cancel out callback processing overhead */
		2572	time_update (EV_A_ 1e100);
		2573
		2574	/* from now on, we want a pipe-wake-up */
		2575	pipe_write_wanted = 1;
		2576
1540	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2577	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1541	{	2578	{
1542	/* update time to cancel out callback processing overhead */
1543	time_update (EV_A_ 1e100);
1544
1545	waittime = MAX_BLOCKTIME;	2579	waittime = MAX_BLOCKTIME;
1546		2580
1547	if (timercnt)	2581	if (timercnt)
1548	{	2582	{
1549	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2583	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1550	if (waittime > to) waittime = to;	2584	if (waittime > to) waittime = to;
1551	}	2585	}
1552		2586
1553	#if EV_PERIODIC_ENABLE	2587	#if EV_PERIODIC_ENABLE
1554	if (periodiccnt)	2588	if (periodiccnt)
1555	{	2589	{
1556	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2590	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1557	if (waittime > to) waittime = to;	2591	if (waittime > to) waittime = to;
1558	}	2592	}
1559	#endif	2593	#endif
1560		2594
		2595	/* don't let timeouts decrease the waittime below timeout_blocktime */
1561	if (expect_false (waittime < timeout_blocktime))	2596	if (expect_false (waittime < timeout_blocktime))
1562	waittime = timeout_blocktime;	2597	waittime = timeout_blocktime;
1563		2598
1564	sleeptime = waittime - backend_fudge;	2599	/* at this point, we NEED to wait, so we have to ensure */
		2600	/* to pass a minimum nonzero value to the backend */
		2601	if (expect_false (waittime < backend_mintime))
		2602	waittime = backend_mintime;
1565		2603
		2604	/* extra check because io_blocktime is commonly 0 */
1566	if (expect_true (sleeptime > io_blocktime))	2605	if (expect_false (io_blocktime))
1567	sleeptime = io_blocktime;
1568
1569	if (sleeptime)
1570	{	2606	{
		2607	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2608
		2609	if (sleeptime > waittime - backend_mintime)
		2610	sleeptime = waittime - backend_mintime;
		2611
		2612	if (expect_true (sleeptime > 0.))
		2613	{
1571	ev_sleep (sleeptime);	2614	ev_sleep (sleeptime);
1572	waittime -= sleeptime;	2615	waittime -= sleeptime;
		2616	}
1573	}	2617	}
1574	}	2618	}
1575		2619
		2620	#if EV_FEATURE_API
1576	++loop_count;	2621	++loop_count;
		2622	#endif
		2623	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1577	backend_poll (EV_A_ waittime);	2624	backend_poll (EV_A_ waittime);
		2625	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2626
		2627	pipe_write_wanted = 0;
		2628
		2629	if (pipe_write_skipped)
		2630	{
		2631	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2632	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2633	}
		2634
1578		2635
1579	/* update ev_rt_now, do magic */	2636	/* update ev_rt_now, do magic */
1580	time_update (EV_A_ waittime + sleeptime);	2637	time_update (EV_A_ waittime + sleeptime);
1581	}	2638	}
1582		2639
…		…
1589	#if EV_IDLE_ENABLE	2646	#if EV_IDLE_ENABLE
1590	/* queue idle watchers unless other events are pending */	2647	/* queue idle watchers unless other events are pending */
1591	idle_reify (EV_A);	2648	idle_reify (EV_A);
1592	#endif	2649	#endif
1593		2650
		2651	#if EV_CHECK_ENABLE
1594	/* queue check watchers, to be executed first */	2652	/* queue check watchers, to be executed first */
1595	if (expect_false (checkcnt))	2653	if (expect_false (checkcnt))
1596	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2654	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2655	#endif
1597		2656
1598	call_pending (EV_A);	2657	EV_INVOKE_PENDING;
1599
1600	}	2658	}
1601	while (expect_true (activecnt && !loop_done));	2659	while (expect_true (
		2660	activecnt
		2661	&& !loop_done
		2662	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		2663	));
1602		2664
1603	if (loop_done == EVUNLOOP_ONE)	2665	if (loop_done == EVBREAK_ONE)
1604	loop_done = EVUNLOOP_CANCEL;	2666	loop_done = EVBREAK_CANCEL;
		2667
		2668	#if EV_FEATURE_API
		2669	--loop_depth;
		2670	#endif
1605	}	2671	}
1606		2672
1607	void	2673	void
1608	ev_unloop (EV_P_ int how)	2674	ev_break (EV_P_ int how)
1609	{	2675	{
1610	loop_done = how;	2676	loop_done = how;
1611	}	2677	}
1612		2678
		2679	void
		2680	ev_ref (EV_P)
		2681	{
		2682	++activecnt;
		2683	}
		2684
		2685	void
		2686	ev_unref (EV_P)
		2687	{
		2688	--activecnt;
		2689	}
		2690
		2691	void
		2692	ev_now_update (EV_P)
		2693	{
		2694	time_update (EV_A_ 1e100);
		2695	}
		2696
		2697	void
		2698	ev_suspend (EV_P)
		2699	{
		2700	ev_now_update (EV_A);
		2701	}
		2702
		2703	void
		2704	ev_resume (EV_P)
		2705	{
		2706	ev_tstamp mn_prev = mn_now;
		2707
		2708	ev_now_update (EV_A);
		2709	timers_reschedule (EV_A_ mn_now - mn_prev);
		2710	#if EV_PERIODIC_ENABLE
		2711	/* TODO: really do this? */
		2712	periodics_reschedule (EV_A);
		2713	#endif
		2714	}
		2715
1613	/*****************************************************************************/	2716	/*****************************************************************************/
		2717	/* singly-linked list management, used when the expected list length is short */
1614		2718
1615	void inline_size	2719	inline_size void
1616	wlist_add (WL *head, WL elem)	2720	wlist_add (WL *head, WL elem)
1617	{	2721	{
1618	elem->next = *head;	2722	elem->next = *head;
1619	*head = elem;	2723	*head = elem;
1620	}	2724	}
1621		2725
1622	void inline_size	2726	inline_size void
1623	wlist_del (WL *head, WL elem)	2727	wlist_del (WL *head, WL elem)
1624	{	2728	{
1625	while (*head)	2729	while (*head)
1626	{	2730	{
1627	if (*head == elem)	2731	if (expect_true (*head == elem))
1628	{	2732	{
1629	*head = elem->next;	2733	*head = elem->next;
1630	return;	2734	break;
1631	}	2735	}
1632		2736
1633	head = &(*head)->next;	2737	head = &(*head)->next;
1634	}	2738	}
1635	}	2739	}
1636		2740
1637	void inline_speed	2741	/* internal, faster, version of ev_clear_pending */
		2742	inline_speed void
1638	clear_pending (EV_P_ W w)	2743	clear_pending (EV_P_ W w)
1639	{	2744	{
1640	if (w->pending)	2745	if (w->pending)
1641	{	2746	{
1642	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2747	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1643	w->pending = 0;	2748	w->pending = 0;
1644	}	2749	}
1645	}	2750	}
1646		2751
1647	int	2752	int
…		…
1651	int pending = w_->pending;	2756	int pending = w_->pending;
1652		2757
1653	if (expect_true (pending))	2758	if (expect_true (pending))
1654	{	2759	{
1655	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2760	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2761	p->w = (W)&pending_w;
1656	w_->pending = 0;	2762	w_->pending = 0;
1657	p->w = 0;
1658	return p->events;	2763	return p->events;
1659	}	2764	}
1660	else	2765	else
1661	return 0;	2766	return 0;
1662	}	2767	}
1663		2768
1664	void inline_size	2769	inline_size void
1665	pri_adjust (EV_P_ W w)	2770	pri_adjust (EV_P_ W w)
1666	{	2771	{
1667	int pri = w->priority;	2772	int pri = ev_priority (w);
1668	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2773	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1669	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2774	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1670	w->priority = pri;	2775	ev_set_priority (w, pri);
1671	}	2776	}
1672		2777
1673	void inline_speed	2778	inline_speed void
1674	ev_start (EV_P_ W w, int active)	2779	ev_start (EV_P_ W w, int active)
1675	{	2780	{
1676	pri_adjust (EV_A_ w);	2781	pri_adjust (EV_A_ w);
1677	w->active = active;	2782	w->active = active;
1678	ev_ref (EV_A);	2783	ev_ref (EV_A);
1679	}	2784	}
1680		2785
1681	void inline_size	2786	inline_size void
1682	ev_stop (EV_P_ W w)	2787	ev_stop (EV_P_ W w)
1683	{	2788	{
1684	ev_unref (EV_A);	2789	ev_unref (EV_A);
1685	w->active = 0;	2790	w->active = 0;
1686	}	2791	}
…		…
1693	int fd = w->fd;	2798	int fd = w->fd;
1694		2799
1695	if (expect_false (ev_is_active (w)))	2800	if (expect_false (ev_is_active (w)))
1696	return;	2801	return;
1697		2802
1698	assert (("ev_io_start called with negative fd", fd >= 0));	2803	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2804	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2805
		2806	EV_FREQUENT_CHECK;
1699		2807
1700	ev_start (EV_A_ (W)w, 1);	2808	ev_start (EV_A_ (W)w, 1);
1701	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2809	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1702	wlist_add (&anfds[fd].head, (WL)w);	2810	wlist_add (&anfds[fd].head, (WL)w);
1703		2811
1704	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2812	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1705	w->events &= ~EV_IOFDSET;	2813	w->events &= ~EV__IOFDSET;
		2814
		2815	EV_FREQUENT_CHECK;
1706	}	2816	}
1707		2817
1708	void noinline	2818	void noinline
1709	ev_io_stop (EV_P_ ev_io *w)	2819	ev_io_stop (EV_P_ ev_io *w)
1710	{	2820	{
1711	clear_pending (EV_A_ (W)w);	2821	clear_pending (EV_A_ (W)w);
1712	if (expect_false (!ev_is_active (w)))	2822	if (expect_false (!ev_is_active (w)))
1713	return;	2823	return;
1714		2824
1715	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2825	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2826
		2827	EV_FREQUENT_CHECK;
1716		2828
1717	wlist_del (&anfds[w->fd].head, (WL)w);	2829	wlist_del (&anfds[w->fd].head, (WL)w);
1718	ev_stop (EV_A_ (W)w);	2830	ev_stop (EV_A_ (W)w);
1719		2831
1720	fd_change (EV_A_ w->fd, 1);	2832	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
		2833
		2834	EV_FREQUENT_CHECK;
1721	}	2835	}
1722		2836
1723	void noinline	2837	void noinline
1724	ev_timer_start (EV_P_ ev_timer *w)	2838	ev_timer_start (EV_P_ ev_timer *w)
1725	{	2839	{
1726	if (expect_false (ev_is_active (w)))	2840	if (expect_false (ev_is_active (w)))
1727	return;	2841	return;
1728		2842
1729	((WT)w)->at += mn_now;	2843	ev_at (w) += mn_now;
1730		2844
1731	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2845	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1732		2846
		2847	EV_FREQUENT_CHECK;
		2848
		2849	++timercnt;
1733	ev_start (EV_A_ (W)w, ++timercnt);	2850	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1734	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2851	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1735	timers [timercnt - 1] = (WT)w;	2852	ANHE_w (timers [ev_active (w)]) = (WT)w;
1736	upheap (timers, timercnt - 1);	2853	ANHE_at_cache (timers [ev_active (w)]);
		2854	upheap (timers, ev_active (w));
1737		2855
		2856	EV_FREQUENT_CHECK;
		2857
1738	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2858	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1739	}	2859	}
1740		2860
1741	void noinline	2861	void noinline
1742	ev_timer_stop (EV_P_ ev_timer *w)	2862	ev_timer_stop (EV_P_ ev_timer *w)
1743	{	2863	{
1744	clear_pending (EV_A_ (W)w);	2864	clear_pending (EV_A_ (W)w);
1745	if (expect_false (!ev_is_active (w)))	2865	if (expect_false (!ev_is_active (w)))
1746	return;	2866	return;
1747		2867
1748	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2868	EV_FREQUENT_CHECK;
1749		2869
1750	{	2870	{
1751	int active = ((W)w)->active;	2871	int active = ev_active (w);
1752		2872
		2873	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2874
		2875	--timercnt;
		2876
1753	if (expect_true (--active < --timercnt))	2877	if (expect_true (active < timercnt + HEAP0))
1754	{	2878	{
1755	timers [active] = timers [timercnt];	2879	timers [active] = timers [timercnt + HEAP0];
1756	adjustheap (timers, timercnt, active);	2880	adjustheap (timers, timercnt, active);
1757	}	2881	}
1758	}	2882	}
1759		2883
1760	((WT)w)->at -= mn_now;	2884	ev_at (w) -= mn_now;
1761		2885
1762	ev_stop (EV_A_ (W)w);	2886	ev_stop (EV_A_ (W)w);
		2887
		2888	EV_FREQUENT_CHECK;
1763	}	2889	}
1764		2890
1765	void noinline	2891	void noinline
1766	ev_timer_again (EV_P_ ev_timer *w)	2892	ev_timer_again (EV_P_ ev_timer *w)
1767	{	2893	{
		2894	EV_FREQUENT_CHECK;
		2895
1768	if (ev_is_active (w))	2896	if (ev_is_active (w))
1769	{	2897	{
1770	if (w->repeat)	2898	if (w->repeat)
1771	{	2899	{
1772	((WT)w)->at = mn_now + w->repeat;	2900	ev_at (w) = mn_now + w->repeat;
		2901	ANHE_at_cache (timers [ev_active (w)]);
1773	adjustheap (timers, timercnt, ((W)w)->active - 1);	2902	adjustheap (timers, timercnt, ev_active (w));
1774	}	2903	}
1775	else	2904	else
1776	ev_timer_stop (EV_A_ w);	2905	ev_timer_stop (EV_A_ w);
1777	}	2906	}
1778	else if (w->repeat)	2907	else if (w->repeat)
1779	{	2908	{
1780	w->at = w->repeat;	2909	ev_at (w) = w->repeat;
1781	ev_timer_start (EV_A_ w);	2910	ev_timer_start (EV_A_ w);
1782	}	2911	}
		2912
		2913	EV_FREQUENT_CHECK;
		2914	}
		2915
		2916	ev_tstamp
		2917	ev_timer_remaining (EV_P_ ev_timer *w)
		2918	{
		2919	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1783	}	2920	}
1784		2921
1785	#if EV_PERIODIC_ENABLE	2922	#if EV_PERIODIC_ENABLE
1786	void noinline	2923	void noinline
1787	ev_periodic_start (EV_P_ ev_periodic *w)	2924	ev_periodic_start (EV_P_ ev_periodic *w)
1788	{	2925	{
1789	if (expect_false (ev_is_active (w)))	2926	if (expect_false (ev_is_active (w)))
1790	return;	2927	return;
1791		2928
1792	if (w->reschedule_cb)	2929	if (w->reschedule_cb)
1793	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2930	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1794	else if (w->interval)	2931	else if (w->interval)
1795	{	2932	{
1796	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2933	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1797	/* this formula differs from the one in periodic_reify because we do not always round up */	2934	periodic_recalc (EV_A_ w);
1798	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1799	}	2935	}
1800	else	2936	else
1801	((WT)w)->at = w->offset;	2937	ev_at (w) = w->offset;
1802		2938
		2939	EV_FREQUENT_CHECK;
		2940
		2941	++periodiccnt;
1803	ev_start (EV_A_ (W)w, ++periodiccnt);	2942	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1804	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2943	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1805	periodics [periodiccnt - 1] = (WT)w;	2944	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1806	upheap (periodics, periodiccnt - 1);	2945	ANHE_at_cache (periodics [ev_active (w)]);
		2946	upheap (periodics, ev_active (w));
1807		2947
		2948	EV_FREQUENT_CHECK;
		2949
1808	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2950	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1809	}	2951	}
1810		2952
1811	void noinline	2953	void noinline
1812	ev_periodic_stop (EV_P_ ev_periodic *w)	2954	ev_periodic_stop (EV_P_ ev_periodic *w)
1813	{	2955	{
1814	clear_pending (EV_A_ (W)w);	2956	clear_pending (EV_A_ (W)w);
1815	if (expect_false (!ev_is_active (w)))	2957	if (expect_false (!ev_is_active (w)))
1816	return;	2958	return;
1817		2959
1818	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	2960	EV_FREQUENT_CHECK;
1819		2961
1820	{	2962	{
1821	int active = ((W)w)->active;	2963	int active = ev_active (w);
1822		2964
		2965	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2966
		2967	--periodiccnt;
		2968
1823	if (expect_true (--active < --periodiccnt))	2969	if (expect_true (active < periodiccnt + HEAP0))
1824	{	2970	{
1825	periodics [active] = periodics [periodiccnt];	2971	periodics [active] = periodics [periodiccnt + HEAP0];
1826	adjustheap (periodics, periodiccnt, active);	2972	adjustheap (periodics, periodiccnt, active);
1827	}	2973	}
1828	}	2974	}
1829		2975
1830	ev_stop (EV_A_ (W)w);	2976	ev_stop (EV_A_ (W)w);
		2977
		2978	EV_FREQUENT_CHECK;
1831	}	2979	}
1832		2980
1833	void noinline	2981	void noinline
1834	ev_periodic_again (EV_P_ ev_periodic *w)	2982	ev_periodic_again (EV_P_ ev_periodic *w)
1835	{	2983	{
…		…
1841		2989
1842	#ifndef SA_RESTART	2990	#ifndef SA_RESTART
1843	# define SA_RESTART 0	2991	# define SA_RESTART 0
1844	#endif	2992	#endif
1845		2993
		2994	#if EV_SIGNAL_ENABLE
		2995
1846	void noinline	2996	void noinline
1847	ev_signal_start (EV_P_ ev_signal *w)	2997	ev_signal_start (EV_P_ ev_signal *w)
1848	{	2998	{
1849	#if EV_MULTIPLICITY
1850	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1851	#endif
1852	if (expect_false (ev_is_active (w)))	2999	if (expect_false (ev_is_active (w)))
1853	return;	3000	return;
1854		3001
1855	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	3002	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1856		3003
		3004	#if EV_MULTIPLICITY
		3005	assert (("libev: a signal must not be attached to two different loops",
		3006	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
		3007
		3008	signals [w->signum - 1].loop = EV_A;
		3009	#endif
		3010
		3011	EV_FREQUENT_CHECK;
		3012
		3013	#if EV_USE_SIGNALFD
		3014	if (sigfd == -2)
1857	{	3015	{
1858	#ifndef _WIN32	3016	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1859	sigset_t full, prev;	3017	if (sigfd < 0 && errno == EINVAL)
1860	sigfillset (&full);	3018	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1861	sigprocmask (SIG_SETMASK, &full, &prev);
1862	#endif
1863		3019
1864	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	3020	if (sigfd >= 0)
		3021	{
		3022	fd_intern (sigfd); /* doing it twice will not hurt */
1865		3023
1866	#ifndef _WIN32	3024	sigemptyset (&sigfd_set);
1867	sigprocmask (SIG_SETMASK, &prev, 0);	3025
1868	#endif	3026	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		3027	ev_set_priority (&sigfd_w, EV_MAXPRI);
		3028	ev_io_start (EV_A_ &sigfd_w);
		3029	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		3030	}
1869	}	3031	}
		3032
		3033	if (sigfd >= 0)
		3034	{
		3035	/* TODO: check .head */
		3036	sigaddset (&sigfd_set, w->signum);
		3037	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		3038
		3039	signalfd (sigfd, &sigfd_set, 0);
		3040	}
		3041	#endif
1870		3042
1871	ev_start (EV_A_ (W)w, 1);	3043	ev_start (EV_A_ (W)w, 1);
1872	wlist_add (&signals [w->signum - 1].head, (WL)w);	3044	wlist_add (&signals [w->signum - 1].head, (WL)w);
1873		3045
1874	if (!((WL)w)->next)	3046	if (!((WL)w)->next)
		3047	# if EV_USE_SIGNALFD
		3048	if (sigfd < 0) /*TODO*/
		3049	# endif
1875	{	3050	{
1876	#if _WIN32	3051	# ifdef _WIN32
		3052	evpipe_init (EV_A);
		3053
1877	signal (w->signum, sighandler);	3054	signal (w->signum, ev_sighandler);
1878	#else	3055	# else
1879	struct sigaction sa;	3056	struct sigaction sa;
		3057
		3058	evpipe_init (EV_A);
		3059
1880	sa.sa_handler = sighandler;	3060	sa.sa_handler = ev_sighandler;
1881	sigfillset (&sa.sa_mask);	3061	sigfillset (&sa.sa_mask);
1882	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3062	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1883	sigaction (w->signum, &sa, 0);	3063	sigaction (w->signum, &sa, 0);
		3064
		3065	if (origflags & EVFLAG_NOSIGMASK)
		3066	{
		3067	sigemptyset (&sa.sa_mask);
		3068	sigaddset (&sa.sa_mask, w->signum);
		3069	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3070	}
1884	#endif	3071	#endif
1885	}	3072	}
		3073
		3074	EV_FREQUENT_CHECK;
1886	}	3075	}
1887		3076
1888	void noinline	3077	void noinline
1889	ev_signal_stop (EV_P_ ev_signal *w)	3078	ev_signal_stop (EV_P_ ev_signal *w)
1890	{	3079	{
1891	clear_pending (EV_A_ (W)w);	3080	clear_pending (EV_A_ (W)w);
1892	if (expect_false (!ev_is_active (w)))	3081	if (expect_false (!ev_is_active (w)))
1893	return;	3082	return;
1894		3083
		3084	EV_FREQUENT_CHECK;
		3085
1895	wlist_del (&signals [w->signum - 1].head, (WL)w);	3086	wlist_del (&signals [w->signum - 1].head, (WL)w);
1896	ev_stop (EV_A_ (W)w);	3087	ev_stop (EV_A_ (W)w);
1897		3088
1898	if (!signals [w->signum - 1].head)	3089	if (!signals [w->signum - 1].head)
		3090	{
		3091	#if EV_MULTIPLICITY
		3092	signals [w->signum - 1].loop = 0; /* unattach from signal */
		3093	#endif
		3094	#if EV_USE_SIGNALFD
		3095	if (sigfd >= 0)
		3096	{
		3097	sigset_t ss;
		3098
		3099	sigemptyset (&ss);
		3100	sigaddset (&ss, w->signum);
		3101	sigdelset (&sigfd_set, w->signum);
		3102
		3103	signalfd (sigfd, &sigfd_set, 0);
		3104	sigprocmask (SIG_UNBLOCK, &ss, 0);
		3105	}
		3106	else
		3107	#endif
1899	signal (w->signum, SIG_DFL);	3108	signal (w->signum, SIG_DFL);
		3109	}
		3110
		3111	EV_FREQUENT_CHECK;
1900	}	3112	}
		3113
		3114	#endif
		3115
		3116	#if EV_CHILD_ENABLE
1901		3117
1902	void	3118	void
1903	ev_child_start (EV_P_ ev_child *w)	3119	ev_child_start (EV_P_ ev_child *w)
1904	{	3120	{
1905	#if EV_MULTIPLICITY	3121	#if EV_MULTIPLICITY
1906	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3122	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1907	#endif	3123	#endif
1908	if (expect_false (ev_is_active (w)))	3124	if (expect_false (ev_is_active (w)))
1909	return;	3125	return;
1910		3126
		3127	EV_FREQUENT_CHECK;
		3128
1911	ev_start (EV_A_ (W)w, 1);	3129	ev_start (EV_A_ (W)w, 1);
1912	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3130	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
		3131
		3132	EV_FREQUENT_CHECK;
1913	}	3133	}
1914		3134
1915	void	3135	void
1916	ev_child_stop (EV_P_ ev_child *w)	3136	ev_child_stop (EV_P_ ev_child *w)
1917	{	3137	{
1918	clear_pending (EV_A_ (W)w);	3138	clear_pending (EV_A_ (W)w);
1919	if (expect_false (!ev_is_active (w)))	3139	if (expect_false (!ev_is_active (w)))
1920	return;	3140	return;
1921		3141
		3142	EV_FREQUENT_CHECK;
		3143
1922	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3144	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1923	ev_stop (EV_A_ (W)w);	3145	ev_stop (EV_A_ (W)w);
		3146
		3147	EV_FREQUENT_CHECK;
1924	}	3148	}
		3149
		3150	#endif
1925		3151
1926	#if EV_STAT_ENABLE	3152	#if EV_STAT_ENABLE
1927		3153
1928	# ifdef _WIN32	3154	# ifdef _WIN32
1929	# undef lstat	3155	# undef lstat
1930	# define lstat(a,b) _stati64 (a,b)	3156	# define lstat(a,b) _stati64 (a,b)
1931	# endif	3157	# endif
1932		3158
1933	#define DEF_STAT_INTERVAL 5.0074891	3159	#define DEF_STAT_INTERVAL 5.0074891
		3160	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1934	#define MIN_STAT_INTERVAL 0.1074891	3161	#define MIN_STAT_INTERVAL 0.1074891
1935		3162
1936	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	3163	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1937		3164
1938	#if EV_USE_INOTIFY	3165	#if EV_USE_INOTIFY
1939	# define EV_INOTIFY_BUFSIZE 8192	3166
		3167	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		3168	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1940		3169
1941	static void noinline	3170	static void noinline
1942	infy_add (EV_P_ ev_stat *w)	3171	infy_add (EV_P_ ev_stat *w)
1943	{	3172	{
1944	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);	3173	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);
1945		3174
1946	if (w->wd < 0)	3175	if (w->wd >= 0)
		3176	{
		3177	struct statfs sfs;
		3178
		3179	/* now local changes will be tracked by inotify, but remote changes won't */
		3180	/* unless the filesystem is known to be local, we therefore still poll */
		3181	/* also do poll on <2.6.25, but with normal frequency */
		3182
		3183	if (!fs_2625)
		3184	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3185	else if (!statfs (w->path, &sfs)
		3186	&& (sfs.f_type == 0x1373 /* devfs */
		3187	|| sfs.f_type == 0xEF53 /* ext2/3 */
		3188	|| sfs.f_type == 0x3153464a /* jfs */
		3189	|| sfs.f_type == 0x52654973 /* reiser3 */
		3190	|| sfs.f_type == 0x01021994 /* tempfs */
		3191	|| sfs.f_type == 0x58465342 /* xfs */))
		3192	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		3193	else
		3194	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1947	{	3195	}
1948	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	3196	else
		3197	{
		3198	/* can't use inotify, continue to stat */
		3199	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1949		3200
1950	/* monitor some parent directory for speedup hints */	3201	/* if path is not there, monitor some parent directory for speedup hints */
		3202	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		3203	/* but an efficiency issue only */
1951	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	3204	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1952	{	3205	{
1953	char path [4096];	3206	char path [4096];
1954	strcpy (path, w->path);	3207	strcpy (path, w->path);
1955		3208
…		…
1958	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	3211	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1959	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	3212	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1960		3213
1961	char *pend = strrchr (path, '/');	3214	char *pend = strrchr (path, '/');
1962		3215
1963	if (!pend)	3216	if (!pend || pend == path)
1964	break; /* whoops, no '/', complain to your admin */	3217	break;
1965		3218
1966	*pend = 0;	3219	*pend = 0;
1967	w->wd = inotify_add_watch (fs_fd, path, mask);	3220	w->wd = inotify_add_watch (fs_fd, path, mask);
1968	}	3221	}
1969	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3222	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1970	}	3223	}
1971	}	3224	}
1972	else
1973	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1974		3225
1975	if (w->wd >= 0)	3226	if (w->wd >= 0)
1976	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3227	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
		3228
		3229	/* now re-arm timer, if required */
		3230	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		3231	ev_timer_again (EV_A_ &w->timer);
		3232	if (ev_is_active (&w->timer)) ev_unref (EV_A);
1977	}	3233	}
1978		3234
1979	static void noinline	3235	static void noinline
1980	infy_del (EV_P_ ev_stat *w)	3236	infy_del (EV_P_ ev_stat *w)
1981	{	3237	{
…		…
1984		3240
1985	if (wd < 0)	3241	if (wd < 0)
1986	return;	3242	return;
1987		3243
1988	w->wd = -2;	3244	w->wd = -2;
1989	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3245	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1990	wlist_del (&fs_hash [slot].head, (WL)w);	3246	wlist_del (&fs_hash [slot].head, (WL)w);
1991		3247
1992	/* remove this watcher, if others are watching it, they will rearm */	3248	/* remove this watcher, if others are watching it, they will rearm */
1993	inotify_rm_watch (fs_fd, wd);	3249	inotify_rm_watch (fs_fd, wd);
1994	}	3250	}
1995		3251
1996	static void noinline	3252	static void noinline
1997	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3253	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1998	{	3254	{
1999	if (slot < 0)	3255	if (slot < 0)
2000	/* overflow, need to check for all hahs slots */	3256	/* overflow, need to check for all hash slots */
2001	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3257	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2002	infy_wd (EV_A_ slot, wd, ev);	3258	infy_wd (EV_A_ slot, wd, ev);
2003	else	3259	else
2004	{	3260	{
2005	WL w_;	3261	WL w_;
2006		3262
2007	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3263	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2008	{	3264	{
2009	ev_stat *w = (ev_stat *)w_;	3265	ev_stat *w = (ev_stat *)w_;
2010	w_ = w_->next; /* lets us remove this watcher and all before it */	3266	w_ = w_->next; /* lets us remove this watcher and all before it */
2011		3267
2012	if (w->wd == wd || wd == -1)	3268	if (w->wd == wd || wd == -1)
2013	{	3269	{
2014	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3270	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2015	{	3271	{
		3272	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2016	w->wd = -1;	3273	w->wd = -1;
2017	infy_add (EV_A_ w); /* re-add, no matter what */	3274	infy_add (EV_A_ w); /* re-add, no matter what */
2018	}	3275	}
2019		3276
2020	stat_timer_cb (EV_A_ &w->timer, 0);	3277	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2025		3282
2026	static void	3283	static void
2027	infy_cb (EV_P_ ev_io *w, int revents)	3284	infy_cb (EV_P_ ev_io *w, int revents)
2028	{	3285	{
2029	char buf [EV_INOTIFY_BUFSIZE];	3286	char buf [EV_INOTIFY_BUFSIZE];
2030	struct inotify_event *ev = (struct inotify_event *)buf;
2031	int ofs;	3287	int ofs;
2032	int len = read (fs_fd, buf, sizeof (buf));	3288	int len = read (fs_fd, buf, sizeof (buf));
2033		3289
2034	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3290	for (ofs = 0; ofs < len; )
		3291	{
		3292	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2035	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3293	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3294	ofs += sizeof (struct inotify_event) + ev->len;
		3295	}
2036	}	3296	}
2037		3297
2038	void inline_size	3298	inline_size void ecb_cold
		3299	ev_check_2625 (EV_P)
		3300	{
		3301	/* kernels < 2.6.25 are borked
		3302	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3303	*/
		3304	if (ev_linux_version () < 0x020619)
		3305	return;
		3306
		3307	fs_2625 = 1;
		3308	}
		3309
		3310	inline_size int
		3311	infy_newfd (void)
		3312	{
		3313	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3314	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3315	if (fd >= 0)
		3316	return fd;
		3317	#endif
		3318	return inotify_init ();
		3319	}
		3320
		3321	inline_size void
2039	infy_init (EV_P)	3322	infy_init (EV_P)
2040	{	3323	{
2041	if (fs_fd != -2)	3324	if (fs_fd != -2)
2042	return;	3325	return;
2043		3326
		3327	fs_fd = -1;
		3328
		3329	ev_check_2625 (EV_A);
		3330
2044	fs_fd = inotify_init ();	3331	fs_fd = infy_newfd ();
2045		3332
2046	if (fs_fd >= 0)	3333	if (fs_fd >= 0)
2047	{	3334	{
		3335	fd_intern (fs_fd);
2048	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3336	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2049	ev_set_priority (&fs_w, EV_MAXPRI);	3337	ev_set_priority (&fs_w, EV_MAXPRI);
2050	ev_io_start (EV_A_ &fs_w);	3338	ev_io_start (EV_A_ &fs_w);
		3339	ev_unref (EV_A);
2051	}	3340	}
2052	}	3341	}
2053		3342
2054	void inline_size	3343	inline_size void
2055	infy_fork (EV_P)	3344	infy_fork (EV_P)
2056	{	3345	{
2057	int slot;	3346	int slot;
2058		3347
2059	if (fs_fd < 0)	3348	if (fs_fd < 0)
2060	return;	3349	return;
2061		3350
		3351	ev_ref (EV_A);
		3352	ev_io_stop (EV_A_ &fs_w);
2062	close (fs_fd);	3353	close (fs_fd);
2063	fs_fd = inotify_init ();	3354	fs_fd = infy_newfd ();
2064		3355
		3356	if (fs_fd >= 0)
		3357	{
		3358	fd_intern (fs_fd);
		3359	ev_io_set (&fs_w, fs_fd, EV_READ);
		3360	ev_io_start (EV_A_ &fs_w);
		3361	ev_unref (EV_A);
		3362	}
		3363
2065	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3364	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2066	{	3365	{
2067	WL w_ = fs_hash [slot].head;	3366	WL w_ = fs_hash [slot].head;
2068	fs_hash [slot].head = 0;	3367	fs_hash [slot].head = 0;
2069		3368
2070	while (w_)	3369	while (w_)
…		…
2075	w->wd = -1;	3374	w->wd = -1;
2076		3375
2077	if (fs_fd >= 0)	3376	if (fs_fd >= 0)
2078	infy_add (EV_A_ w); /* re-add, no matter what */	3377	infy_add (EV_A_ w); /* re-add, no matter what */
2079	else	3378	else
		3379	{
		3380	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3381	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2080	ev_timer_start (EV_A_ &w->timer);	3382	ev_timer_again (EV_A_ &w->timer);
		3383	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3384	}
2081	}	3385	}
2082
2083	}	3386	}
2084	}	3387	}
2085		3388
		3389	#endif
		3390
		3391	#ifdef _WIN32
		3392	# define EV_LSTAT(p,b) _stati64 (p, b)
		3393	#else
		3394	# define EV_LSTAT(p,b) lstat (p, b)
2086	#endif	3395	#endif
2087		3396
2088	void	3397	void
2089	ev_stat_stat (EV_P_ ev_stat *w)	3398	ev_stat_stat (EV_P_ ev_stat *w)
2090	{	3399	{
…		…
2097	static void noinline	3406	static void noinline
2098	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3407	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2099	{	3408	{
2100	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3409	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2101		3410
2102	/* we copy this here each the time so that */	3411	ev_statdata prev = w->attr;
2103	/* prev has the old value when the callback gets invoked */
2104	w->prev = w->attr;
2105	ev_stat_stat (EV_A_ w);	3412	ev_stat_stat (EV_A_ w);
2106		3413
2107	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3414	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2108	if (	3415	if (
2109	w->prev.st_dev != w->attr.st_dev	3416	prev.st_dev != w->attr.st_dev
2110	|| w->prev.st_ino != w->attr.st_ino	3417	|| prev.st_ino != w->attr.st_ino
2111	|| w->prev.st_mode != w->attr.st_mode	3418	|| prev.st_mode != w->attr.st_mode
2112	|| w->prev.st_nlink != w->attr.st_nlink	3419	|| prev.st_nlink != w->attr.st_nlink
2113	|| w->prev.st_uid != w->attr.st_uid	3420	|| prev.st_uid != w->attr.st_uid
2114	|| w->prev.st_gid != w->attr.st_gid	3421	|| prev.st_gid != w->attr.st_gid
2115	|| w->prev.st_rdev != w->attr.st_rdev	3422	|| prev.st_rdev != w->attr.st_rdev
2116	|| w->prev.st_size != w->attr.st_size	3423	|| prev.st_size != w->attr.st_size
2117	|| w->prev.st_atime != w->attr.st_atime	3424	|| prev.st_atime != w->attr.st_atime
2118	|| w->prev.st_mtime != w->attr.st_mtime	3425	|| prev.st_mtime != w->attr.st_mtime
2119	|| w->prev.st_ctime != w->attr.st_ctime	3426	|| prev.st_ctime != w->attr.st_ctime
2120	) {	3427	) {
		3428	/* we only update w->prev on actual differences */
		3429	/* in case we test more often than invoke the callback, */
		3430	/* to ensure that prev is always different to attr */
		3431	w->prev = prev;
		3432
2121	#if EV_USE_INOTIFY	3433	#if EV_USE_INOTIFY
		3434	if (fs_fd >= 0)
		3435	{
2122	infy_del (EV_A_ w);	3436	infy_del (EV_A_ w);
2123	infy_add (EV_A_ w);	3437	infy_add (EV_A_ w);
2124	ev_stat_stat (EV_A_ w); /* avoid race... */	3438	ev_stat_stat (EV_A_ w); /* avoid race... */
		3439	}
2125	#endif	3440	#endif
2126		3441
2127	ev_feed_event (EV_A_ w, EV_STAT);	3442	ev_feed_event (EV_A_ w, EV_STAT);
2128	}	3443	}
2129	}	3444	}
…		…
2132	ev_stat_start (EV_P_ ev_stat *w)	3447	ev_stat_start (EV_P_ ev_stat *w)
2133	{	3448	{
2134	if (expect_false (ev_is_active (w)))	3449	if (expect_false (ev_is_active (w)))
2135	return;	3450	return;
2136		3451
2137	/* since we use memcmp, we need to clear any padding data etc. */
2138	memset (&w->prev, 0, sizeof (ev_statdata));
2139	memset (&w->attr, 0, sizeof (ev_statdata));
2140
2141	ev_stat_stat (EV_A_ w);	3452	ev_stat_stat (EV_A_ w);
2142		3453
		3454	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2143	if (w->interval < MIN_STAT_INTERVAL)	3455	w->interval = MIN_STAT_INTERVAL;
2144	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2145		3456
2146	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3457	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2147	ev_set_priority (&w->timer, ev_priority (w));	3458	ev_set_priority (&w->timer, ev_priority (w));
2148		3459
2149	#if EV_USE_INOTIFY	3460	#if EV_USE_INOTIFY
2150	infy_init (EV_A);	3461	infy_init (EV_A);
2151		3462
2152	if (fs_fd >= 0)	3463	if (fs_fd >= 0)
2153	infy_add (EV_A_ w);	3464	infy_add (EV_A_ w);
2154	else	3465	else
2155	#endif	3466	#endif
		3467	{
2156	ev_timer_start (EV_A_ &w->timer);	3468	ev_timer_again (EV_A_ &w->timer);
		3469	ev_unref (EV_A);
		3470	}
2157		3471
2158	ev_start (EV_A_ (W)w, 1);	3472	ev_start (EV_A_ (W)w, 1);
		3473
		3474	EV_FREQUENT_CHECK;
2159	}	3475	}
2160		3476
2161	void	3477	void
2162	ev_stat_stop (EV_P_ ev_stat *w)	3478	ev_stat_stop (EV_P_ ev_stat *w)
2163	{	3479	{
2164	clear_pending (EV_A_ (W)w);	3480	clear_pending (EV_A_ (W)w);
2165	if (expect_false (!ev_is_active (w)))	3481	if (expect_false (!ev_is_active (w)))
2166	return;	3482	return;
2167		3483
		3484	EV_FREQUENT_CHECK;
		3485
2168	#if EV_USE_INOTIFY	3486	#if EV_USE_INOTIFY
2169	infy_del (EV_A_ w);	3487	infy_del (EV_A_ w);
2170	#endif	3488	#endif
		3489
		3490	if (ev_is_active (&w->timer))
		3491	{
		3492	ev_ref (EV_A);
2171	ev_timer_stop (EV_A_ &w->timer);	3493	ev_timer_stop (EV_A_ &w->timer);
		3494	}
2172		3495
2173	ev_stop (EV_A_ (W)w);	3496	ev_stop (EV_A_ (W)w);
		3497
		3498	EV_FREQUENT_CHECK;
2174	}	3499	}
2175	#endif	3500	#endif
2176		3501
2177	#if EV_IDLE_ENABLE	3502	#if EV_IDLE_ENABLE
2178	void	3503	void
…		…
2181	if (expect_false (ev_is_active (w)))	3506	if (expect_false (ev_is_active (w)))
2182	return;	3507	return;
2183		3508
2184	pri_adjust (EV_A_ (W)w);	3509	pri_adjust (EV_A_ (W)w);
2185		3510
		3511	EV_FREQUENT_CHECK;
		3512
2186	{	3513	{
2187	int active = ++idlecnt [ABSPRI (w)];	3514	int active = ++idlecnt [ABSPRI (w)];
2188		3515
2189	++idleall;	3516	++idleall;
2190	ev_start (EV_A_ (W)w, active);	3517	ev_start (EV_A_ (W)w, active);
2191		3518
2192	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3519	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2193	idles [ABSPRI (w)][active - 1] = w;	3520	idles [ABSPRI (w)][active - 1] = w;
2194	}	3521	}
		3522
		3523	EV_FREQUENT_CHECK;
2195	}	3524	}
2196		3525
2197	void	3526	void
2198	ev_idle_stop (EV_P_ ev_idle *w)	3527	ev_idle_stop (EV_P_ ev_idle *w)
2199	{	3528	{
2200	clear_pending (EV_A_ (W)w);	3529	clear_pending (EV_A_ (W)w);
2201	if (expect_false (!ev_is_active (w)))	3530	if (expect_false (!ev_is_active (w)))
2202	return;	3531	return;
2203		3532
		3533	EV_FREQUENT_CHECK;
		3534
2204	{	3535	{
2205	int active = ((W)w)->active;	3536	int active = ev_active (w);
2206		3537
2207	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3538	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2208	((W)idles [ABSPRI (w)][active - 1])->active = active;	3539	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2209		3540
2210	ev_stop (EV_A_ (W)w);	3541	ev_stop (EV_A_ (W)w);
2211	--idleall;	3542	--idleall;
2212	}	3543	}
2213	}
2214	#endif
2215		3544
		3545	EV_FREQUENT_CHECK;
		3546	}
		3547	#endif
		3548
		3549	#if EV_PREPARE_ENABLE
2216	void	3550	void
2217	ev_prepare_start (EV_P_ ev_prepare *w)	3551	ev_prepare_start (EV_P_ ev_prepare *w)
2218	{	3552	{
2219	if (expect_false (ev_is_active (w)))	3553	if (expect_false (ev_is_active (w)))
2220	return;	3554	return;
		3555
		3556	EV_FREQUENT_CHECK;
2221		3557
2222	ev_start (EV_A_ (W)w, ++preparecnt);	3558	ev_start (EV_A_ (W)w, ++preparecnt);
2223	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3559	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2224	prepares [preparecnt - 1] = w;	3560	prepares [preparecnt - 1] = w;
		3561
		3562	EV_FREQUENT_CHECK;
2225	}	3563	}
2226		3564
2227	void	3565	void
2228	ev_prepare_stop (EV_P_ ev_prepare *w)	3566	ev_prepare_stop (EV_P_ ev_prepare *w)
2229	{	3567	{
2230	clear_pending (EV_A_ (W)w);	3568	clear_pending (EV_A_ (W)w);
2231	if (expect_false (!ev_is_active (w)))	3569	if (expect_false (!ev_is_active (w)))
2232	return;	3570	return;
2233		3571
		3572	EV_FREQUENT_CHECK;
		3573
2234	{	3574	{
2235	int active = ((W)w)->active;	3575	int active = ev_active (w);
		3576
2236	prepares [active - 1] = prepares [--preparecnt];	3577	prepares [active - 1] = prepares [--preparecnt];
2237	((W)prepares [active - 1])->active = active;	3578	ev_active (prepares [active - 1]) = active;
2238	}	3579	}
2239		3580
2240	ev_stop (EV_A_ (W)w);	3581	ev_stop (EV_A_ (W)w);
2241	}
2242		3582
		3583	EV_FREQUENT_CHECK;
		3584	}
		3585	#endif
		3586
		3587	#if EV_CHECK_ENABLE
2243	void	3588	void
2244	ev_check_start (EV_P_ ev_check *w)	3589	ev_check_start (EV_P_ ev_check *w)
2245	{	3590	{
2246	if (expect_false (ev_is_active (w)))	3591	if (expect_false (ev_is_active (w)))
2247	return;	3592	return;
		3593
		3594	EV_FREQUENT_CHECK;
2248		3595
2249	ev_start (EV_A_ (W)w, ++checkcnt);	3596	ev_start (EV_A_ (W)w, ++checkcnt);
2250	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3597	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2251	checks [checkcnt - 1] = w;	3598	checks [checkcnt - 1] = w;
		3599
		3600	EV_FREQUENT_CHECK;
2252	}	3601	}
2253		3602
2254	void	3603	void
2255	ev_check_stop (EV_P_ ev_check *w)	3604	ev_check_stop (EV_P_ ev_check *w)
2256	{	3605	{
2257	clear_pending (EV_A_ (W)w);	3606	clear_pending (EV_A_ (W)w);
2258	if (expect_false (!ev_is_active (w)))	3607	if (expect_false (!ev_is_active (w)))
2259	return;	3608	return;
2260		3609
		3610	EV_FREQUENT_CHECK;
		3611
2261	{	3612	{
2262	int active = ((W)w)->active;	3613	int active = ev_active (w);
		3614
2263	checks [active - 1] = checks [--checkcnt];	3615	checks [active - 1] = checks [--checkcnt];
2264	((W)checks [active - 1])->active = active;	3616	ev_active (checks [active - 1]) = active;
2265	}	3617	}
2266		3618
2267	ev_stop (EV_A_ (W)w);	3619	ev_stop (EV_A_ (W)w);
		3620
		3621	EV_FREQUENT_CHECK;
2268	}	3622	}
		3623	#endif
2269		3624
2270	#if EV_EMBED_ENABLE	3625	#if EV_EMBED_ENABLE
2271	void noinline	3626	void noinline
2272	ev_embed_sweep (EV_P_ ev_embed *w)	3627	ev_embed_sweep (EV_P_ ev_embed *w)
2273	{	3628	{
2274	ev_loop (w->other, EVLOOP_NONBLOCK);	3629	ev_run (w->other, EVRUN_NOWAIT);
2275	}	3630	}
2276		3631
2277	static void	3632	static void
2278	embed_io_cb (EV_P_ ev_io *io, int revents)	3633	embed_io_cb (EV_P_ ev_io *io, int revents)
2279	{	3634	{
2280	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3635	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2281		3636
2282	if (ev_cb (w))	3637	if (ev_cb (w))
2283	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3638	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2284	else	3639	else
2285	ev_loop (w->other, EVLOOP_NONBLOCK);	3640	ev_run (w->other, EVRUN_NOWAIT);
2286	}	3641	}
2287		3642
2288	static void	3643	static void
2289	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3644	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2290	{	3645	{
2291	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3646	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2292		3647
2293	{	3648	{
2294	struct ev_loop *loop = w->other;	3649	EV_P = w->other;
2295		3650
2296	while (fdchangecnt)	3651	while (fdchangecnt)
2297	{	3652	{
2298	fd_reify (EV_A);	3653	fd_reify (EV_A);
2299	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3654	ev_run (EV_A_ EVRUN_NOWAIT);
2300	}	3655	}
2301	}	3656	}
		3657	}
		3658
		3659	static void
		3660	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3661	{
		3662	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3663
		3664	ev_embed_stop (EV_A_ w);
		3665
		3666	{
		3667	EV_P = w->other;
		3668
		3669	ev_loop_fork (EV_A);
		3670	ev_run (EV_A_ EVRUN_NOWAIT);
		3671	}
		3672
		3673	ev_embed_start (EV_A_ w);
2302	}	3674	}
2303		3675
2304	#if 0	3676	#if 0
2305	static void	3677	static void
2306	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3678	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2314	{	3686	{
2315	if (expect_false (ev_is_active (w)))	3687	if (expect_false (ev_is_active (w)))
2316	return;	3688	return;
2317		3689
2318	{	3690	{
2319	struct ev_loop *loop = w->other;	3691	EV_P = w->other;
2320	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3692	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2321	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3693	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2322	}	3694	}
		3695
		3696	EV_FREQUENT_CHECK;
2323		3697
2324	ev_set_priority (&w->io, ev_priority (w));	3698	ev_set_priority (&w->io, ev_priority (w));
2325	ev_io_start (EV_A_ &w->io);	3699	ev_io_start (EV_A_ &w->io);
2326		3700
2327	ev_prepare_init (&w->prepare, embed_prepare_cb);	3701	ev_prepare_init (&w->prepare, embed_prepare_cb);
2328	ev_set_priority (&w->prepare, EV_MINPRI);	3702	ev_set_priority (&w->prepare, EV_MINPRI);
2329	ev_prepare_start (EV_A_ &w->prepare);	3703	ev_prepare_start (EV_A_ &w->prepare);
2330		3704
		3705	ev_fork_init (&w->fork, embed_fork_cb);
		3706	ev_fork_start (EV_A_ &w->fork);
		3707
2331	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3708	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2332		3709
2333	ev_start (EV_A_ (W)w, 1);	3710	ev_start (EV_A_ (W)w, 1);
		3711
		3712	EV_FREQUENT_CHECK;
2334	}	3713	}
2335		3714
2336	void	3715	void
2337	ev_embed_stop (EV_P_ ev_embed *w)	3716	ev_embed_stop (EV_P_ ev_embed *w)
2338	{	3717	{
2339	clear_pending (EV_A_ (W)w);	3718	clear_pending (EV_A_ (W)w);
2340	if (expect_false (!ev_is_active (w)))	3719	if (expect_false (!ev_is_active (w)))
2341	return;	3720	return;
2342		3721
		3722	EV_FREQUENT_CHECK;
		3723
2343	ev_io_stop (EV_A_ &w->io);	3724	ev_io_stop (EV_A_ &w->io);
2344	ev_prepare_stop (EV_A_ &w->prepare);	3725	ev_prepare_stop (EV_A_ &w->prepare);
		3726	ev_fork_stop (EV_A_ &w->fork);
2345		3727
2346	ev_stop (EV_A_ (W)w);	3728	ev_stop (EV_A_ (W)w);
		3729
		3730	EV_FREQUENT_CHECK;
2347	}	3731	}
2348	#endif	3732	#endif
2349		3733
2350	#if EV_FORK_ENABLE	3734	#if EV_FORK_ENABLE
2351	void	3735	void
2352	ev_fork_start (EV_P_ ev_fork *w)	3736	ev_fork_start (EV_P_ ev_fork *w)
2353	{	3737	{
2354	if (expect_false (ev_is_active (w)))	3738	if (expect_false (ev_is_active (w)))
2355	return;	3739	return;
2356		3740
		3741	EV_FREQUENT_CHECK;
		3742
2357	ev_start (EV_A_ (W)w, ++forkcnt);	3743	ev_start (EV_A_ (W)w, ++forkcnt);
2358	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3744	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2359	forks [forkcnt - 1] = w;	3745	forks [forkcnt - 1] = w;
		3746
		3747	EV_FREQUENT_CHECK;
2360	}	3748	}
2361		3749
2362	void	3750	void
2363	ev_fork_stop (EV_P_ ev_fork *w)	3751	ev_fork_stop (EV_P_ ev_fork *w)
2364	{	3752	{
2365	clear_pending (EV_A_ (W)w);	3753	clear_pending (EV_A_ (W)w);
2366	if (expect_false (!ev_is_active (w)))	3754	if (expect_false (!ev_is_active (w)))
2367	return;	3755	return;
2368		3756
		3757	EV_FREQUENT_CHECK;
		3758
2369	{	3759	{
2370	int active = ((W)w)->active;	3760	int active = ev_active (w);
		3761
2371	forks [active - 1] = forks [--forkcnt];	3762	forks [active - 1] = forks [--forkcnt];
2372	((W)forks [active - 1])->active = active;	3763	ev_active (forks [active - 1]) = active;
2373	}	3764	}
2374		3765
2375	ev_stop (EV_A_ (W)w);	3766	ev_stop (EV_A_ (W)w);
		3767
		3768	EV_FREQUENT_CHECK;
		3769	}
		3770	#endif
		3771
		3772	#if EV_CLEANUP_ENABLE
		3773	void
		3774	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3775	{
		3776	if (expect_false (ev_is_active (w)))
		3777	return;
		3778
		3779	EV_FREQUENT_CHECK;
		3780
		3781	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3782	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3783	cleanups [cleanupcnt - 1] = w;
		3784
		3785	/* cleanup watchers should never keep a refcount on the loop */
		3786	ev_unref (EV_A);
		3787	EV_FREQUENT_CHECK;
		3788	}
		3789
		3790	void
		3791	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3792	{
		3793	clear_pending (EV_A_ (W)w);
		3794	if (expect_false (!ev_is_active (w)))
		3795	return;
		3796
		3797	EV_FREQUENT_CHECK;
		3798	ev_ref (EV_A);
		3799
		3800	{
		3801	int active = ev_active (w);
		3802
		3803	cleanups [active - 1] = cleanups [--cleanupcnt];
		3804	ev_active (cleanups [active - 1]) = active;
		3805	}
		3806
		3807	ev_stop (EV_A_ (W)w);
		3808
		3809	EV_FREQUENT_CHECK;
		3810	}
		3811	#endif
		3812
		3813	#if EV_ASYNC_ENABLE
		3814	void
		3815	ev_async_start (EV_P_ ev_async *w)
		3816	{
		3817	if (expect_false (ev_is_active (w)))
		3818	return;
		3819
		3820	w->sent = 0;
		3821
		3822	evpipe_init (EV_A);
		3823
		3824	EV_FREQUENT_CHECK;
		3825
		3826	ev_start (EV_A_ (W)w, ++asynccnt);
		3827	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3828	asyncs [asynccnt - 1] = w;
		3829
		3830	EV_FREQUENT_CHECK;
		3831	}
		3832
		3833	void
		3834	ev_async_stop (EV_P_ ev_async *w)
		3835	{
		3836	clear_pending (EV_A_ (W)w);
		3837	if (expect_false (!ev_is_active (w)))
		3838	return;
		3839
		3840	EV_FREQUENT_CHECK;
		3841
		3842	{
		3843	int active = ev_active (w);
		3844
		3845	asyncs [active - 1] = asyncs [--asynccnt];
		3846	ev_active (asyncs [active - 1]) = active;
		3847	}
		3848
		3849	ev_stop (EV_A_ (W)w);
		3850
		3851	EV_FREQUENT_CHECK;
		3852	}
		3853
		3854	void
		3855	ev_async_send (EV_P_ ev_async *w)
		3856	{
		3857	w->sent = 1;
		3858	evpipe_write (EV_A_ &async_pending);
2376	}	3859	}
2377	#endif	3860	#endif
2378		3861
2379	/*****************************************************************************/	3862	/*****************************************************************************/
2380		3863
…		…
2390	once_cb (EV_P_ struct ev_once *once, int revents)	3873	once_cb (EV_P_ struct ev_once *once, int revents)
2391	{	3874	{
2392	void (*cb)(int revents, void *arg) = once->cb;	3875	void (*cb)(int revents, void *arg) = once->cb;
2393	void *arg = once->arg;	3876	void *arg = once->arg;
2394		3877
2395	ev_io_stop (EV_A_ &once->io);	3878	ev_io_stop (EV_A_ &once->io);
2396	ev_timer_stop (EV_A_ &once->to);	3879	ev_timer_stop (EV_A_ &once->to);
2397	ev_free (once);	3880	ev_free (once);
2398		3881
2399	cb (revents, arg);	3882	cb (revents, arg);
2400	}	3883	}
2401		3884
2402	static void	3885	static void
2403	once_cb_io (EV_P_ ev_io *w, int revents)	3886	once_cb_io (EV_P_ ev_io *w, int revents)
2404	{	3887	{
2405	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3888	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3889
		3890	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2406	}	3891	}
2407		3892
2408	static void	3893	static void
2409	once_cb_to (EV_P_ ev_timer *w, int revents)	3894	once_cb_to (EV_P_ ev_timer *w, int revents)
2410	{	3895	{
2411	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3896	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3897
		3898	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2412	}	3899	}
2413		3900
2414	void	3901	void
2415	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3902	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2416	{	3903	{
2417	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3904	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2418		3905
2419	if (expect_false (!once))	3906	if (expect_false (!once))
2420	{	3907	{
2421	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3908	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2422	return;	3909	return;
2423	}	3910	}
2424		3911
2425	once->cb = cb;	3912	once->cb = cb;
2426	once->arg = arg;	3913	once->arg = arg;
…		…
2438	ev_timer_set (&once->to, timeout, 0.);	3925	ev_timer_set (&once->to, timeout, 0.);
2439	ev_timer_start (EV_A_ &once->to);	3926	ev_timer_start (EV_A_ &once->to);
2440	}	3927	}
2441	}	3928	}
2442		3929
		3930	/*****************************************************************************/
		3931
		3932	#if EV_WALK_ENABLE
		3933	void ecb_cold
		3934	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3935	{
		3936	int i, j;
		3937	ev_watcher_list *wl, *wn;
		3938
		3939	if (types & (EV_IO | EV_EMBED))
		3940	for (i = 0; i < anfdmax; ++i)
		3941	for (wl = anfds [i].head; wl; )
		3942	{
		3943	wn = wl->next;
		3944
		3945	#if EV_EMBED_ENABLE
		3946	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3947	{
		3948	if (types & EV_EMBED)
		3949	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3950	}
		3951	else
		3952	#endif
		3953	#if EV_USE_INOTIFY
		3954	if (ev_cb ((ev_io *)wl) == infy_cb)
		3955	;
		3956	else
		3957	#endif
		3958	if ((ev_io *)wl != &pipe_w)
		3959	if (types & EV_IO)
		3960	cb (EV_A_ EV_IO, wl);
		3961
		3962	wl = wn;
		3963	}
		3964
		3965	if (types & (EV_TIMER | EV_STAT))
		3966	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3967	#if EV_STAT_ENABLE
		3968	/*TODO: timer is not always active*/
		3969	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3970	{
		3971	if (types & EV_STAT)
		3972	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3973	}
		3974	else
		3975	#endif
		3976	if (types & EV_TIMER)
		3977	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3978
		3979	#if EV_PERIODIC_ENABLE
		3980	if (types & EV_PERIODIC)
		3981	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3982	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3983	#endif
		3984
		3985	#if EV_IDLE_ENABLE
		3986	if (types & EV_IDLE)
		3987	for (j = NUMPRI; i--; )
		3988	for (i = idlecnt [j]; i--; )
		3989	cb (EV_A_ EV_IDLE, idles [j][i]);
		3990	#endif
		3991
		3992	#if EV_FORK_ENABLE
		3993	if (types & EV_FORK)
		3994	for (i = forkcnt; i--; )
		3995	if (ev_cb (forks [i]) != embed_fork_cb)
		3996	cb (EV_A_ EV_FORK, forks [i]);
		3997	#endif
		3998
		3999	#if EV_ASYNC_ENABLE
		4000	if (types & EV_ASYNC)
		4001	for (i = asynccnt; i--; )
		4002	cb (EV_A_ EV_ASYNC, asyncs [i]);
		4003	#endif
		4004
		4005	#if EV_PREPARE_ENABLE
		4006	if (types & EV_PREPARE)
		4007	for (i = preparecnt; i--; )
		4008	# if EV_EMBED_ENABLE
		4009	if (ev_cb (prepares [i]) != embed_prepare_cb)
		4010	# endif
		4011	cb (EV_A_ EV_PREPARE, prepares [i]);
		4012	#endif
		4013
		4014	#if EV_CHECK_ENABLE
		4015	if (types & EV_CHECK)
		4016	for (i = checkcnt; i--; )
		4017	cb (EV_A_ EV_CHECK, checks [i]);
		4018	#endif
		4019
		4020	#if EV_SIGNAL_ENABLE
		4021	if (types & EV_SIGNAL)
		4022	for (i = 0; i < EV_NSIG - 1; ++i)
		4023	for (wl = signals [i].head; wl; )
		4024	{
		4025	wn = wl->next;
		4026	cb (EV_A_ EV_SIGNAL, wl);
		4027	wl = wn;
		4028	}
		4029	#endif
		4030
		4031	#if EV_CHILD_ENABLE
		4032	if (types & EV_CHILD)
		4033	for (i = (EV_PID_HASHSIZE); i--; )
		4034	for (wl = childs [i]; wl; )
		4035	{
		4036	wn = wl->next;
		4037	cb (EV_A_ EV_CHILD, wl);
		4038	wl = wn;
		4039	}
		4040	#endif
		4041	/* EV_STAT 0x00001000 /* stat data changed */
		4042	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		4043	}
		4044	#endif
		4045
2443	#if EV_MULTIPLICITY	4046	#if EV_MULTIPLICITY
2444	#include "ev_wrap.h"	4047	#include "ev_wrap.h"
2445	#endif	4048	#endif
2446		4049
2447	#ifdef __cplusplus	4050	EV_CPP(})
2448	}
2449	#endif
2450		4051

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