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Comparing libev/ev.c (file contents):
Revision 1.179 by root, Tue Dec 11 21:04:40 2007 UTC vs.
Revision 1.382 by sf-exg, Thu Jun 30 13:13:59 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	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:
10	*	9	*
11	* * Redistributions of source code must retain the above copyright	10	* 1. Redistributions of source code must retain the above copyright notice,
12	* notice, this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
13	*	12	*
14	* * Redistributions in binary form must reproduce the above	13	* 2. Redistributions in binary form must reproduce the above copyright
15	* copyright notice, this list of conditions and the following	14	* notice, this list of conditions and the following disclaimer in the
16	* disclaimer in the documentation and/or other materials provided	15	* documentation and/or other materials provided with the distribution.
17	* with the distribution.
18	*	16	*
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	26	* OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*
		28	* Alternatively, the contents of this file may be used under the terms of
		29	* the GNU General Public License ("GPL") version 2 or any later version,
		30	* in which case the provisions of the GPL are applicable instead of
		31	* the above. If you wish to allow the use of your version of this file
		32	* only under the terms of the GPL and not to allow others to use your
		33	* version of this file under the BSD license, indicate your decision
		34	* by deleting the provisions above and replace them with the notice
		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
		37	* either the BSD or the GPL.
30	*/	38	*/
31		39
32	#ifdef __cplusplus	40	/* this big block deduces configuration from config.h */
33	extern "C" {
34	#endif
35
36	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
37	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
38	# include EV_CONFIG_H	43	# include EV_CONFIG_H
39	# else	44	# else
40	# include "config.h"	45	# include "config.h"
41	# endif	46	# endif
42		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
43	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
44	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
45	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
46	# endif	71	# endif
47	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
48	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
49	# endif	74	# endif
50	# else	75	# else
51	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
53	# endif	78	# endif
54	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
55	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
56	# endif	81	# endif
57	# endif	82	# endif
58		83
		84	# if HAVE_NANOSLEEP
59	# ifndef EV_USE_SELECT	85	# ifndef EV_USE_NANOSLEEP
60	# if HAVE_SELECT && HAVE_SYS_SELECT_H	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
61	# define EV_USE_SELECT 1
62	# else
63	# define EV_USE_SELECT 0
64	# endif	87	# endif
		88	# else
		89	# undef EV_USE_NANOSLEEP
		90	# define EV_USE_NANOSLEEP 0
65	# endif	91	# endif
66		92
		93	# if HAVE_SELECT && HAVE_SYS_SELECT_H
67	# ifndef EV_USE_POLL	94	# ifndef EV_USE_SELECT
68	# if HAVE_POLL && HAVE_POLL_H	95	# define EV_USE_SELECT EV_FEATURE_BACKENDS
69	# define EV_USE_POLL 1
70	# else
71	# define EV_USE_POLL 0
72	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
		100	# endif
		101
		102	# if HAVE_POLL && HAVE_POLL_H
		103	# ifndef EV_USE_POLL
		104	# define EV_USE_POLL EV_FEATURE_BACKENDS
		105	# endif
		106	# else
		107	# undef EV_USE_POLL
		108	# define EV_USE_POLL 0
73	# endif	109	# endif
74		110
75	# ifndef EV_USE_EPOLL
76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
77	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
78	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
79	# define EV_USE_EPOLL 0
80	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
81	# endif	118	# endif
82		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
83	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
85	# define EV_USE_KQUEUE 1
86	# else
87	# define EV_USE_KQUEUE 0
88	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
89	# endif	127	# endif
90		128
91	# ifndef EV_USE_PORT
92	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
93	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
94	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
95	# define EV_USE_PORT 0
96	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
97	# endif	136	# endif
98		137
99	# ifndef EV_USE_INOTIFY
100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
101	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
102	# else
103	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
104	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
105	# endif	145	# endif
106		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
107	#endif	154	# endif
108		155
109	#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
110	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
111	#include <fcntl.h>	169	#include <fcntl.h>
112	#include <stddef.h>	170	#include <stddef.h>
113		171
114	#include <stdio.h>	172	#include <stdio.h>
115		173
116	#include <assert.h>	174	#include <assert.h>
117	#include <errno.h>	175	#include <errno.h>
118	#include <sys/types.h>	176	#include <sys/types.h>
119	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
120		179
121	#include <signal.h>	180	#include <signal.h>
122		181
123	#ifdef EV_H	182	#ifdef EV_H
124	# include EV_H	183	# include EV_H
125	#else	184	#else
126	# include "ev.h"	185	# include "ev.h"
127	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
128		189
129	#ifndef _WIN32	190	#ifndef _WIN32
130	# include <sys/time.h>	191	# include <sys/time.h>
131	# include <sys/wait.h>	192	# include <sys/wait.h>
132	# include <unistd.h>	193	# include <unistd.h>
133	#else	194	#else
		195	# include <io.h>
134	# define WIN32_LEAN_AND_MEAN	196	# define WIN32_LEAN_AND_MEAN
135	# include <windows.h>	197	# include <windows.h>
136	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
137	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
138	# 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
139	#endif	251	# endif
140		252	#endif
141	/**/
142		253
143	#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
144	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
		259	# endif
145	#endif	260	#endif
146		261
147	#ifndef EV_USE_REALTIME	262	#ifndef EV_USE_REALTIME
148	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
		264	#endif
		265
		266	#ifndef EV_USE_NANOSLEEP
		267	# if _POSIX_C_SOURCE >= 199309L
		268	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		269	# else
		270	# define EV_USE_NANOSLEEP 0
		271	# endif
149	#endif	272	#endif
150		273
151	#ifndef EV_USE_SELECT	274	#ifndef EV_USE_SELECT
152	# define EV_USE_SELECT 1	275	# define EV_USE_SELECT EV_FEATURE_BACKENDS
153	#endif	276	#endif
154		277
155	#ifndef EV_USE_POLL	278	#ifndef EV_USE_POLL
156	# ifdef _WIN32	279	# ifdef _WIN32
157	# define EV_USE_POLL 0	280	# define EV_USE_POLL 0
158	# else	281	# else
159	# define EV_USE_POLL 1	282	# define EV_USE_POLL EV_FEATURE_BACKENDS
160	# endif	283	# endif
161	#endif	284	#endif
162		285
163	#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
164	# define EV_USE_EPOLL 0	290	# define EV_USE_EPOLL 0
		291	# endif
165	#endif	292	#endif
166		293
167	#ifndef EV_USE_KQUEUE	294	#ifndef EV_USE_KQUEUE
168	# define EV_USE_KQUEUE 0	295	# define EV_USE_KQUEUE 0
169	#endif	296	#endif
…		…
171	#ifndef EV_USE_PORT	298	#ifndef EV_USE_PORT
172	# define EV_USE_PORT 0	299	# define EV_USE_PORT 0
173	#endif	300	#endif
174		301
175	#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
176	# define EV_USE_INOTIFY 0	306	# define EV_USE_INOTIFY 0
		307	# endif
177	#endif	308	#endif
178		309
179	#ifndef EV_PID_HASHSIZE	310	#ifndef EV_PID_HASHSIZE
180	# if EV_MINIMAL	311	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
181	# 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
182	# else	321	# else
183	# define EV_PID_HASHSIZE 16	322	# define EV_USE_EVENTFD 0
184	# endif	323	# endif
185	#endif	324	#endif
186		325
187	#ifndef EV_INOTIFY_HASHSIZE	326	#ifndef EV_USE_SIGNALFD
188	# if EV_MINIMAL	327	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
189	# define EV_INOTIFY_HASHSIZE 1	328	# define EV_USE_SIGNALFD EV_FEATURE_OS
190	# else	329	# else
191	# define EV_INOTIFY_HASHSIZE 16	330	# define EV_USE_SIGNALFD 0
192	# endif	331	# endif
193	#endif	332	#endif
194		333
195	/**/	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
196		373
197	#ifndef CLOCK_MONOTONIC	374	#ifndef CLOCK_MONOTONIC
198	# undef EV_USE_MONOTONIC	375	# undef EV_USE_MONOTONIC
199	# define EV_USE_MONOTONIC 0	376	# define EV_USE_MONOTONIC 0
200	#endif	377	#endif
…		…
202	#ifndef CLOCK_REALTIME	379	#ifndef CLOCK_REALTIME
203	# undef EV_USE_REALTIME	380	# undef EV_USE_REALTIME
204	# define EV_USE_REALTIME 0	381	# define EV_USE_REALTIME 0
205	#endif	382	#endif
206		383
		384	#if !EV_STAT_ENABLE
		385	# undef EV_USE_INOTIFY
		386	# define EV_USE_INOTIFY 0
		387	#endif
		388
		389	#if !EV_USE_NANOSLEEP
		390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
		392	# include <sys/select.h>
		393	# endif
		394	#endif
		395
		396	#if EV_USE_INOTIFY
		397	# include <sys/statfs.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
		404	#endif
		405
207	#if EV_SELECT_IS_WINSOCKET	406	#if EV_SELECT_IS_WINSOCKET
208	# include <winsock.h>	407	# include <winsock.h>
209	#endif	408	#endif
210		409
211	#if !EV_STAT_ENABLE	410	#if EV_USE_EVENTFD
212	# define EV_USE_INOTIFY 0	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
213	#endif	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
214		425
215	#if EV_USE_INOTIFY	426	#if EV_USE_SIGNALFD
		427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
216	# include <sys/inotify.h>	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	};
217	#endif	446	#endif
218		447
219	/**/	448	/**/
220		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
221	/*	456	/*
222	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
223	* It is added to ev_rt_now when scheduling periodics
224	* to ensure progress, time-wise, even when rounding
225	* errors are against us.
226	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
227	* Better solutions welcome.
228	*/	459	*/
229	#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 */
230		462
231	#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) */
232	#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) */
233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
234		465
235	#if __GNUC__ >= 3	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
236	# 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)
237	# 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
238	#else	493	#else
239	# define expect(expr,value) (expr)	494	#define ecb_inline static
240	# define noinline
241	# if __STDC_VERSION__ < 199901L
242	# define inline
243	# endif	495	#endif
244	#endif
245		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. */
246	#define expect_false(expr) expect ((expr) != 0, 0)	528	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
247	#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
248	#define inline_size static inline	536	#define inline_size ecb_inline
249		537
250	#if EV_MINIMAL	538	#if EV_FEATURE_CODE
		539	# define inline_speed ecb_inline
		540	#else
251	# 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)
252	#else	548	#else
253	# define inline_speed static inline
254	#endif
255
256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	549	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		550	#endif
258		551
259	#define EMPTY /* required for microsofts broken pseudo-c compiler */	552	#define EMPTY /* required for microsofts broken pseudo-c compiler */
260	#define EMPTY2(a,b) /* used to suppress some warnings */	553	#define EMPTY2(a,b) /* used to suppress some warnings */
261		554
262	typedef ev_watcher *W;	555	typedef ev_watcher *W;
263	typedef ev_watcher_list *WL;	556	typedef ev_watcher_list *WL;
264	typedef ev_watcher_time *WT;	557	typedef ev_watcher_time *WT;
265		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
		568	#if EV_USE_MONOTONIC
266	static int 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)
		580	#endif
267		581
268	#ifdef _WIN32	582	#ifdef _WIN32
269	# include "ev_win32.c"	583	# include "ev_win32.c"
270	#endif	584	#endif
271		585
272	/*****************************************************************************/	586	/*****************************************************************************/
273		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
274	static void (*syserr_cb)(const char *msg);	686	static void (*syserr_cb)(const char *msg);
275		687
276	void	688	void ecb_cold
277	ev_set_syserr_cb (void (*cb)(const char *msg))	689	ev_set_syserr_cb (void (*cb)(const char *msg))
278	{	690	{
279	syserr_cb = cb;	691	syserr_cb = cb;
280	}	692	}
281		693
282	static void noinline	694	static void noinline ecb_cold
283	syserr (const char *msg)	695	ev_syserr (const char *msg)
284	{	696	{
285	if (!msg)	697	if (!msg)
286	msg = "(libev) system error";	698	msg = "(libev) system error";
287		699
288	if (syserr_cb)	700	if (syserr_cb)
289	syserr_cb (msg);	701	syserr_cb (msg);
290	else	702	else
291	{	703	{
		704	#if EV_AVOID_STDIO
		705	ev_printerr (msg);
		706	ev_printerr (": ");
		707	ev_printerr (strerror (errno));
		708	ev_printerr ("\n");
		709	#else
292	perror (msg);	710	perror (msg);
		711	#endif
293	abort ();	712	abort ();
294	}	713	}
295	}	714	}
296		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
297	static void *(*alloc)(void *ptr, long size);	735	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
298		736
299	void	737	void ecb_cold
300	ev_set_allocator (void *(*cb)(void *ptr, long size))	738	ev_set_allocator (void *(*cb)(void *ptr, long size))
301	{	739	{
302	alloc = cb;	740	alloc = cb;
303	}	741	}
304		742
305	inline_speed void *	743	inline_speed void *
306	ev_realloc (void *ptr, long size)	744	ev_realloc (void *ptr, long size)
307	{	745	{
308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	746	ptr = alloc (ptr, size);
309		747
310	if (!ptr && size)	748	if (!ptr && size)
311	{	749	{
		750	#if EV_AVOID_STDIO
		751	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		752	#else
312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	753	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		754	#endif
313	abort ();	755	abort ();
314	}	756	}
315		757
316	return ptr;	758	return ptr;
317	}	759	}
…		…
319	#define ev_malloc(size) ev_realloc (0, (size))	761	#define ev_malloc(size) ev_realloc (0, (size))
320	#define ev_free(ptr) ev_realloc ((ptr), 0)	762	#define ev_free(ptr) ev_realloc ((ptr), 0)
321		763
322	/*****************************************************************************/	764	/*****************************************************************************/
323		765
		766	/* set in reify when reification needed */
		767	#define EV_ANFD_REIFY 1
		768
		769	/* file descriptor info structure */
324	typedef struct	770	typedef struct
325	{	771	{
326	WL head;	772	WL head;
327	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 */
328	unsigned char reify;	776	unsigned char unused;
		777	#if EV_USE_EPOLL
		778	unsigned int egen; /* generation counter to counter epoll bugs */
		779	#endif
329	#if EV_SELECT_IS_WINSOCKET	780	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
330	SOCKET handle;	781	SOCKET handle;
331	#endif	782	#endif
		783	#if EV_USE_IOCP
		784	OVERLAPPED or, ow;
		785	#endif
332	} ANFD;	786	} ANFD;
333		787
		788	/* stores the pending event set for a given watcher */
334	typedef struct	789	typedef struct
335	{	790	{
336	W w;	791	W w;
337	int events;	792	int events; /* the pending event set for the given watcher */
338	} ANPENDING;	793	} ANPENDING;
339		794
340	#if EV_USE_INOTIFY	795	#if EV_USE_INOTIFY
		796	/* hash table entry per inotify-id */
341	typedef struct	797	typedef struct
342	{	798	{
343	WL head;	799	WL head;
344	} 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)
345	#endif	821	#endif
346		822
347	#if EV_MULTIPLICITY	823	#if EV_MULTIPLICITY
348		824
349	struct ev_loop	825	struct ev_loop
…		…
368		844
369	static int ev_default_loop_ptr;	845	static int ev_default_loop_ptr;
370		846
371	#endif	847	#endif
372		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
373	/*****************************************************************************/	861	/*****************************************************************************/
374		862
		863	#ifndef EV_HAVE_EV_TIME
375	ev_tstamp	864	ev_tstamp
376	ev_time (void)	865	ev_time (void)
377	{	866	{
378	#if EV_USE_REALTIME	867	#if EV_USE_REALTIME
		868	if (expect_true (have_realtime))
		869	{
379	struct timespec ts;	870	struct timespec ts;
380	clock_gettime (CLOCK_REALTIME, &ts);	871	clock_gettime (CLOCK_REALTIME, &ts);
381	return ts.tv_sec + ts.tv_nsec * 1e-9;	872	return ts.tv_sec + ts.tv_nsec * 1e-9;
382	#else	873	}
		874	#endif
		875
383	struct timeval tv;	876	struct timeval tv;
384	gettimeofday (&tv, 0);	877	gettimeofday (&tv, 0);
385	return tv.tv_sec + tv.tv_usec * 1e-6;	878	return tv.tv_sec + tv.tv_usec * 1e-6;
386	#endif
387	}	879	}
		880	#endif
388		881
389	ev_tstamp inline_size	882	inline_size ev_tstamp
390	get_clock (void)	883	get_clock (void)
391	{	884	{
392	#if EV_USE_MONOTONIC	885	#if EV_USE_MONOTONIC
393	if (expect_true (have_monotonic))	886	if (expect_true (have_monotonic))
394	{	887	{
…		…
407	{	900	{
408	return ev_rt_now;	901	return ev_rt_now;
409	}	902	}
410	#endif	903	#endif
411		904
412	int inline_size	905	void
		906	ev_sleep (ev_tstamp delay)
		907	{
		908	if (delay > 0.)
		909	{
		910	#if EV_USE_NANOSLEEP
		911	struct timespec ts;
		912
		913	EV_TS_SET (ts, delay);
		914	nanosleep (&ts, 0);
		915	#elif defined(_WIN32)
		916	Sleep ((unsigned long)(delay * 1e3));
		917	#else
		918	struct timeval tv;
		919
		920	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		921	/* something not guaranteed by newer posix versions, but guaranteed */
		922	/* by older ones */
		923	EV_TV_SET (tv, delay);
		924	select (0, 0, 0, 0, &tv);
		925	#endif
		926	}
		927	}
		928
		929	/*****************************************************************************/
		930
		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
413	array_nextsize (int elem, int cur, int cnt)	936	array_nextsize (int elem, int cur, int cnt)
414	{	937	{
415	int ncur = cur + 1;	938	int ncur = cur + 1;
416		939
417	do	940	do
418	ncur <<= 1;	941	ncur <<= 1;
419	while (cnt > ncur);	942	while (cnt > ncur);
420		943
421	/* 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 */
422	if (elem * ncur > 4096)	945	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
423	{	946	{
424	ncur *= elem;	947	ncur *= elem;
425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	948	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
426	ncur = ncur - sizeof (void *) * 4;	949	ncur = ncur - sizeof (void *) * 4;
427	ncur /= elem;	950	ncur /= elem;
428	}	951	}
429		952
430	return ncur;	953	return ncur;
431	}	954	}
432		955
433	static noinline void *	956	static void * noinline ecb_cold
434	array_realloc (int elem, void *base, int *cur, int cnt)	957	array_realloc (int elem, void *base, int *cur, int cnt)
435	{	958	{
436	*cur = array_nextsize (elem, *cur, cnt);	959	*cur = array_nextsize (elem, *cur, cnt);
437	return ev_realloc (base, elem * *cur);	960	return ev_realloc (base, elem * *cur);
438	}	961	}
		962
		963	#define array_init_zero(base,count) \
		964	memset ((void *)(base), 0, sizeof (*(base)) * (count))
439		965
440	#define array_needsize(type,base,cur,cnt,init) \	966	#define array_needsize(type,base,cur,cnt,init) \
441	if (expect_false ((cnt) > (cur))) \	967	if (expect_false ((cnt) > (cur))) \
442	{ \	968	{ \
443	int ocur_ = (cur); \	969	int ecb_unused ocur_ = (cur); \
444	(base) = (type *)array_realloc \	970	(base) = (type *)array_realloc \
445	(sizeof (type), (base), &(cur), (cnt)); \	971	(sizeof (type), (base), &(cur), (cnt)); \
446	init ((base) + (ocur_), (cur) - ocur_); \	972	init ((base) + (ocur_), (cur) - ocur_); \
447	}	973	}
448		974
…		…
455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	981	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
456	}	982	}
457	#endif	983	#endif
458		984
459	#define array_free(stem, idx) \	985	#define array_free(stem, idx) \
460	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
461		987
462	/*****************************************************************************/	988	/*****************************************************************************/
		989
		990	/* dummy callback for pending events */
		991	static void noinline
		992	pendingcb (EV_P_ ev_prepare *w, int revents)
		993	{
		994	}
463		995
464	void noinline	996	void noinline
465	ev_feed_event (EV_P_ void *w, int revents)	997	ev_feed_event (EV_P_ void *w, int revents)
466	{	998	{
467	W w_ = (W)w;	999	W w_ = (W)w;
…		…
476	pendings [pri][w_->pending - 1].w = w_;	1008	pendings [pri][w_->pending - 1].w = w_;
477	pendings [pri][w_->pending - 1].events = revents;	1009	pendings [pri][w_->pending - 1].events = revents;
478	}	1010	}
479	}	1011	}
480		1012
481	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
482	queue_events (EV_P_ W *events, int eventcnt, int type)	1029	queue_events (EV_P_ W *events, int eventcnt, int type)
483	{	1030	{
484	int i;	1031	int i;
485		1032
486	for (i = 0; i < eventcnt; ++i)	1033	for (i = 0; i < eventcnt; ++i)
487	ev_feed_event (EV_A_ events [i], type);	1034	ev_feed_event (EV_A_ events [i], type);
488	}	1035	}
489		1036
490	/*****************************************************************************/	1037	/*****************************************************************************/
491		1038
492	void inline_size	1039	inline_speed void
493	anfds_init (ANFD *base, int count)
494	{
495	while (count--)
496	{
497	base->head = 0;
498	base->events = EV_NONE;
499	base->reify = 0;
500
501	++base;
502	}
503	}
504
505	void inline_speed
506	fd_event (EV_P_ int fd, int revents)	1040	fd_event_nocheck (EV_P_ int fd, int revents)
507	{	1041	{
508	ANFD *anfd = anfds + fd;	1042	ANFD *anfd = anfds + fd;
509	ev_io *w;	1043	ev_io *w;
510		1044
511	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)
…		…
515	if (ev)	1049	if (ev)
516	ev_feed_event (EV_A_ (W)w, ev);	1050	ev_feed_event (EV_A_ (W)w, ev);
517	}	1051	}
518	}	1052	}
519		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
520	void	1065	void
521	ev_feed_fd_event (EV_P_ int fd, int revents)	1066	ev_feed_fd_event (EV_P_ int fd, int revents)
522	{	1067	{
523	if (fd >= 0 && fd < anfdmax)	1068	if (fd >= 0 && fd < anfdmax)
524	fd_event (EV_A_ fd, revents);	1069	fd_event_nocheck (EV_A_ fd, revents);
525	}	1070	}
526		1071
527	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
528	fd_reify (EV_P)	1075	fd_reify (EV_P)
529	{	1076	{
530	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
531		1103
532	for (i = 0; i < fdchangecnt; ++i)	1104	for (i = 0; i < fdchangecnt; ++i)
533	{	1105	{
534	int fd = fdchanges [i];	1106	int fd = fdchanges [i];
535	ANFD *anfd = anfds + fd;	1107	ANFD *anfd = anfds + fd;
536	ev_io *w;	1108	ev_io *w;
537		1109
538	int events = 0;	1110	unsigned char o_events = anfd->events;
		1111	unsigned char o_reify = anfd->reify;
539		1112
540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1113	anfd->reify = 0;
541	events |= w->events;
542		1114
543	#if EV_SELECT_IS_WINSOCKET	1115	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
544	if (events)
545	{	1116	{
546	unsigned long argp;	1117	anfd->events = 0;
547	anfd->handle = _get_osfhandle (fd);	1118
548	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 |= */
549	}	1124	}
550	#endif
551		1125
552	anfd->reify = 0;	1126	if (o_reify & EV__IOFDSET)
553
554	backend_modify (EV_A_ fd, anfd->events, events);	1127	backend_modify (EV_A_ fd, o_events, anfd->events);
555	anfd->events = events;
556	}	1128	}
557		1129
558	fdchangecnt = 0;	1130	fdchangecnt = 0;
559	}	1131	}
560		1132
561	void inline_size	1133	/* something about the given fd changed */
		1134	inline_size void
562	fd_change (EV_P_ int fd)	1135	fd_change (EV_P_ int fd, int flags)
563	{	1136	{
564	if (expect_false (anfds [fd].reify))	1137	unsigned char reify = anfds [fd].reify;
565	return;
566
567	anfds [fd].reify = 1;	1138	anfds [fd].reify |= flags;
568		1139
		1140	if (expect_true (!reify))
		1141	{
569	++fdchangecnt;	1142	++fdchangecnt;
570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	1143	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
571	fdchanges [fdchangecnt - 1] = fd;	1144	fdchanges [fdchangecnt - 1] = fd;
		1145	}
572	}	1146	}
573		1147
574	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
575	fd_kill (EV_P_ int fd)	1150	fd_kill (EV_P_ int fd)
576	{	1151	{
577	ev_io *w;	1152	ev_io *w;
578		1153
579	while ((w = (ev_io *)anfds [fd].head))	1154	while ((w = (ev_io *)anfds [fd].head))
…		…
581	ev_io_stop (EV_A_ w);	1156	ev_io_stop (EV_A_ w);
582	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);
583	}	1158	}
584	}	1159	}
585		1160
586	int inline_size	1161	/* check whether the given fd is actually valid, for error recovery */
		1162	inline_size int ecb_cold
587	fd_valid (int fd)	1163	fd_valid (int fd)
588	{	1164	{
589	#ifdef _WIN32	1165	#ifdef _WIN32
590	return _get_osfhandle (fd) != -1;	1166	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
591	#else	1167	#else
592	return fcntl (fd, F_GETFD) != -1;	1168	return fcntl (fd, F_GETFD) != -1;
593	#endif	1169	#endif
594	}	1170	}
595		1171
596	/* called on EBADF to verify fds */	1172	/* called on EBADF to verify fds */
597	static void noinline	1173	static void noinline ecb_cold
598	fd_ebadf (EV_P)	1174	fd_ebadf (EV_P)
599	{	1175	{
600	int fd;	1176	int fd;
601		1177
602	for (fd = 0; fd < anfdmax; ++fd)	1178	for (fd = 0; fd < anfdmax; ++fd)
603	if (anfds [fd].events)	1179	if (anfds [fd].events)
604	if (!fd_valid (fd) == -1 && errno == EBADF)	1180	if (!fd_valid (fd) && errno == EBADF)
605	fd_kill (EV_A_ fd);	1181	fd_kill (EV_A_ fd);
606	}	1182	}
607		1183
608	/* 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 */
609	static void noinline	1185	static void noinline ecb_cold
610	fd_enomem (EV_P)	1186	fd_enomem (EV_P)
611	{	1187	{
612	int fd;	1188	int fd;
613		1189
614	for (fd = anfdmax; fd--; )	1190	for (fd = anfdmax; fd--; )
615	if (anfds [fd].events)	1191	if (anfds [fd].events)
616	{	1192	{
617	fd_kill (EV_A_ fd);	1193	fd_kill (EV_A_ fd);
618	return;	1194	break;
619	}	1195	}
620	}	1196	}
621		1197
622	/* 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 */
623	static void noinline	1199	static void noinline
…		…
627		1203
628	for (fd = 0; fd < anfdmax; ++fd)	1204	for (fd = 0; fd < anfdmax; ++fd)
629	if (anfds [fd].events)	1205	if (anfds [fd].events)
630	{	1206	{
631	anfds [fd].events = 0;	1207	anfds [fd].events = 0;
632	fd_change (EV_A_ fd);	1208	anfds [fd].emask = 0;
		1209	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
633	}	1210	}
634	}	1211	}
635		1212
636	/*****************************************************************************/	1213	/* used to prepare libev internal fd's */
637		1214	/* this is not fork-safe */
638	void inline_speed	1215	inline_speed void
639	upheap (WT *heap, int k)
640	{
641	WT w = heap [k];
642
643	while (k)
644	{
645	int p = (k - 1) >> 1;
646
647	if (heap [p]->at <= w->at)
648	break;
649
650	heap [k] = heap [p];
651	((W)heap [k])->active = k + 1;
652	k = p;
653	}
654
655	heap [k] = w;
656	((W)heap [k])->active = k + 1;
657
658	}
659
660	void inline_speed
661	downheap (WT *heap, int N, int k)
662	{
663	WT w = heap [k];
664
665	for (;;)
666	{
667	int c = (k << 1) + 1;
668
669	if (c >= N)
670	break;
671
672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
673	? 1 : 0;
674
675	if (w->at <= heap [c]->at)
676	break;
677
678	heap [k] = heap [c];
679	((W)heap [k])->active = k + 1;
680
681	k = c;
682	}
683
684	heap [k] = w;
685	((W)heap [k])->active = k + 1;
686	}
687
688	void inline_size
689	adjustheap (WT *heap, int N, int k)
690	{
691	upheap (heap, k);
692	downheap (heap, N, k);
693	}
694
695	/*****************************************************************************/
696
697	typedef struct
698	{
699	WL head;
700	sig_atomic_t volatile gotsig;
701	} ANSIG;
702
703	static ANSIG *signals;
704	static int signalmax;
705
706	static int sigpipe [2];
707	static sig_atomic_t volatile gotsig;
708	static ev_io sigev;
709
710	void inline_size
711	signals_init (ANSIG *base, int count)
712	{
713	while (count--)
714	{
715	base->head = 0;
716	base->gotsig = 0;
717
718	++base;
719	}
720	}
721
722	static void
723	sighandler (int signum)
724	{
725	#if _WIN32
726	signal (signum, sighandler);
727	#endif
728
729	signals [signum - 1].gotsig = 1;
730
731	if (!gotsig)
732	{
733	int old_errno = errno;
734	gotsig = 1;
735	write (sigpipe [1], &signum, 1);
736	errno = old_errno;
737	}
738	}
739
740	void noinline
741	ev_feed_signal_event (EV_P_ int signum)
742	{
743	WL w;
744
745	#if EV_MULTIPLICITY
746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
747	#endif
748
749	--signum;
750
751	if (signum < 0 || signum >= signalmax)
752	return;
753
754	signals [signum].gotsig = 0;
755
756	for (w = signals [signum].head; w; w = w->next)
757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
758	}
759
760	static void
761	sigcb (EV_P_ ev_io *iow, int revents)
762	{
763	int signum;
764
765	read (sigpipe [0], &revents, 1);
766	gotsig = 0;
767
768	for (signum = signalmax; signum--; )
769	if (signals [signum].gotsig)
770	ev_feed_signal_event (EV_A_ signum + 1);
771	}
772
773	void inline_speed
774	fd_intern (int fd)	1216	fd_intern (int fd)
775	{	1217	{
776	#ifdef _WIN32	1218	#ifdef _WIN32
777	int arg = 1;	1219	unsigned long arg = 1;
778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1220	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
779	#else	1221	#else
780	fcntl (fd, F_SETFD, FD_CLOEXEC);	1222	fcntl (fd, F_SETFD, FD_CLOEXEC);
781	fcntl (fd, F_SETFL, O_NONBLOCK);	1223	fcntl (fd, F_SETFL, O_NONBLOCK);
782	#endif	1224	#endif
783	}	1225	}
784		1226
785	static void noinline
786	siginit (EV_P)
787	{
788	fd_intern (sigpipe [0]);
789	fd_intern (sigpipe [1]);
790
791	ev_io_set (&sigev, sigpipe [0], EV_READ);
792	ev_io_start (EV_A_ &sigev);
793	ev_unref (EV_A); /* child watcher should not keep loop alive */
794	}
795
796	/*****************************************************************************/	1227	/*****************************************************************************/
797		1228
798	static ev_child *childs [EV_PID_HASHSIZE];	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	*/
799		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	if (!ev_active (&pipe_w))
		1526	return;
		1527
		1528	signals [signum - 1].pending = 1;
		1529	evpipe_write (EV_A_ &sig_pending);
		1530	}
		1531
		1532	static void
		1533	ev_sighandler (int signum)
		1534	{
800	#ifndef _WIN32	1535	#ifdef _WIN32
		1536	signal (signum, ev_sighandler);
		1537	#endif
		1538
		1539	ev_feed_signal (signum);
		1540	}
		1541
		1542	void noinline
		1543	ev_feed_signal_event (EV_P_ int signum)
		1544	{
		1545	WL w;
		1546
		1547	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1548	return;
		1549
		1550	--signum;
		1551
		1552	#if EV_MULTIPLICITY
		1553	/* it is permissible to try to feed a signal to the wrong loop */
		1554	/* or, likely more useful, feeding a signal nobody is waiting for */
		1555
		1556	if (expect_false (signals [signum].loop != EV_A))
		1557	return;
		1558	#endif
		1559
		1560	signals [signum].pending = 0;
		1561
		1562	for (w = signals [signum].head; w; w = w->next)
		1563	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		1564	}
		1565
		1566	#if EV_USE_SIGNALFD
		1567	static void
		1568	sigfdcb (EV_P_ ev_io *iow, int revents)
		1569	{
		1570	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1571
		1572	for (;;)
		1573	{
		1574	ssize_t res = read (sigfd, si, sizeof (si));
		1575
		1576	/* not ISO-C, as res might be -1, but works with SuS */
		1577	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1578	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1579
		1580	if (res < (ssize_t)sizeof (si))
		1581	break;
		1582	}
		1583	}
		1584	#endif
		1585
		1586	#endif
		1587
		1588	/*****************************************************************************/
		1589
		1590	#if EV_CHILD_ENABLE
		1591	static WL childs [EV_PID_HASHSIZE];
801		1592
802	static ev_signal childev;	1593	static ev_signal childev;
803		1594
804	void inline_speed	1595	#ifndef WIFCONTINUED
		1596	# define WIFCONTINUED(status) 0
		1597	#endif
		1598
		1599	/* handle a single child status event */
		1600	inline_speed void
805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1601	child_reap (EV_P_ int chain, int pid, int status)
806	{	1602	{
807	ev_child *w;	1603	ev_child *w;
		1604	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
808		1605
809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1606	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		1607	{
810	if (w->pid == pid || !w->pid)	1608	if ((w->pid == pid || !w->pid)
		1609	&& (!traced || (w->flags & 1)))
811	{	1610	{
812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1611	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
813	w->rpid = pid;	1612	w->rpid = pid;
814	w->rstatus = status;	1613	w->rstatus = status;
815	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1614	ev_feed_event (EV_A_ (W)w, EV_CHILD);
816	}	1615	}
		1616	}
817	}	1617	}
818		1618
819	#ifndef WCONTINUED	1619	#ifndef WCONTINUED
820	# define WCONTINUED 0	1620	# define WCONTINUED 0
821	#endif	1621	#endif
822		1622
		1623	/* called on sigchld etc., calls waitpid */
823	static void	1624	static void
824	childcb (EV_P_ ev_signal *sw, int revents)	1625	childcb (EV_P_ ev_signal *sw, int revents)
825	{	1626	{
826	int pid, status;	1627	int pid, status;
827		1628
…		…
830	if (!WCONTINUED	1631	if (!WCONTINUED
831	|| errno != EINVAL	1632	|| errno != EINVAL
832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1633	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
833	return;	1634	return;
834		1635
835	/* make sure we are called again until all childs have been reaped */	1636	/* make sure we are called again until all children have been reaped */
836	/* we need to do it this way so that the callback gets called before we continue */	1637	/* we need to do it this way so that the callback gets called before we continue */
837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1638	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
838		1639
839	child_reap (EV_A_ sw, pid, pid, status);	1640	child_reap (EV_A_ pid, pid, status);
840	if (EV_PID_HASHSIZE > 1)	1641	if ((EV_PID_HASHSIZE) > 1)
841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1642	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
842	}	1643	}
843		1644
844	#endif	1645	#endif
845		1646
846	/*****************************************************************************/	1647	/*****************************************************************************/
847		1648
		1649	#if EV_USE_IOCP
		1650	# include "ev_iocp.c"
		1651	#endif
848	#if EV_USE_PORT	1652	#if EV_USE_PORT
849	# include "ev_port.c"	1653	# include "ev_port.c"
850	#endif	1654	#endif
851	#if EV_USE_KQUEUE	1655	#if EV_USE_KQUEUE
852	# include "ev_kqueue.c"	1656	# include "ev_kqueue.c"
…		…
859	#endif	1663	#endif
860	#if EV_USE_SELECT	1664	#if EV_USE_SELECT
861	# include "ev_select.c"	1665	# include "ev_select.c"
862	#endif	1666	#endif
863		1667
864	int	1668	int ecb_cold
865	ev_version_major (void)	1669	ev_version_major (void)
866	{	1670	{
867	return EV_VERSION_MAJOR;	1671	return EV_VERSION_MAJOR;
868	}	1672	}
869		1673
870	int	1674	int ecb_cold
871	ev_version_minor (void)	1675	ev_version_minor (void)
872	{	1676	{
873	return EV_VERSION_MINOR;	1677	return EV_VERSION_MINOR;
874	}	1678	}
875		1679
876	/* return true if we are running with elevated privileges and should ignore env variables */	1680	/* return true if we are running with elevated privileges and should ignore env variables */
877	int inline_size	1681	int inline_size ecb_cold
878	enable_secure (void)	1682	enable_secure (void)
879	{	1683	{
880	#ifdef _WIN32	1684	#ifdef _WIN32
881	return 0;	1685	return 0;
882	#else	1686	#else
883	return getuid () != geteuid ()	1687	return getuid () != geteuid ()
884	|| getgid () != getegid ();	1688	|| getgid () != getegid ();
885	#endif	1689	#endif
886	}	1690	}
887		1691
888	unsigned int	1692	unsigned int ecb_cold
889	ev_supported_backends (void)	1693	ev_supported_backends (void)
890	{	1694	{
891	unsigned int flags = 0;	1695	unsigned int flags = 0;
892		1696
893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1697	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1701	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
898		1702
899	return flags;	1703	return flags;
900	}	1704	}
901		1705
902	unsigned int	1706	unsigned int ecb_cold
903	ev_recommended_backends (void)	1707	ev_recommended_backends (void)
904	{	1708	{
905	unsigned int flags = ev_supported_backends ();	1709	unsigned int flags = ev_supported_backends ();
906		1710
907	#ifndef __NetBSD__	1711	#ifndef __NetBSD__
908	/* kqueue is borked on everything but netbsd apparently */	1712	/* kqueue is borked on everything but netbsd apparently */
909	/* it usually doesn't work correctly on anything but sockets and pipes */	1713	/* it usually doesn't work correctly on anything but sockets and pipes */
910	flags &= ~EVBACKEND_KQUEUE;	1714	flags &= ~EVBACKEND_KQUEUE;
911	#endif	1715	#endif
912	#ifdef __APPLE__	1716	#ifdef __APPLE__
913	// flags &= ~EVBACKEND_KQUEUE; for documentation	1717	/* only select works correctly on that "unix-certified" platform */
914	flags &= ~EVBACKEND_POLL;	1718	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1719	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		1720	#endif
		1721	#ifdef __FreeBSD__
		1722	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
915	#endif	1723	#endif
916		1724
917	return flags;	1725	return flags;
918	}	1726	}
919		1727
920	unsigned int	1728	unsigned int ecb_cold
921	ev_embeddable_backends (void)	1729	ev_embeddable_backends (void)
922	{	1730	{
923	return EVBACKEND_EPOLL	1731	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
924	| EVBACKEND_KQUEUE	1732
925	| EVBACKEND_PORT;	1733	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1734	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
		1735	flags &= ~EVBACKEND_EPOLL;
		1736
		1737	return flags;
926	}	1738	}
927		1739
928	unsigned int	1740	unsigned int
929	ev_backend (EV_P)	1741	ev_backend (EV_P)
930	{	1742	{
931	return backend;	1743	return backend;
932	}	1744	}
933		1745
		1746	#if EV_FEATURE_API
934	unsigned int	1747	unsigned int
935	ev_loop_count (EV_P)	1748	ev_iteration (EV_P)
936	{	1749	{
937	return loop_count;	1750	return loop_count;
938	}	1751	}
939		1752
		1753	unsigned int
		1754	ev_depth (EV_P)
		1755	{
		1756	return loop_depth;
		1757	}
		1758
		1759	void
		1760	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1761	{
		1762	io_blocktime = interval;
		1763	}
		1764
		1765	void
		1766	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1767	{
		1768	timeout_blocktime = interval;
		1769	}
		1770
		1771	void
		1772	ev_set_userdata (EV_P_ void *data)
		1773	{
		1774	userdata = data;
		1775	}
		1776
		1777	void *
		1778	ev_userdata (EV_P)
		1779	{
		1780	return userdata;
		1781	}
		1782
		1783	void
		1784	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1785	{
		1786	invoke_cb = invoke_pending_cb;
		1787	}
		1788
		1789	void
		1790	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1791	{
		1792	release_cb = release;
		1793	acquire_cb = acquire;
		1794	}
		1795	#endif
		1796
		1797	/* initialise a loop structure, must be zero-initialised */
940	static void noinline	1798	static void noinline ecb_cold
941	loop_init (EV_P_ unsigned int flags)	1799	loop_init (EV_P_ unsigned int flags)
942	{	1800	{
943	if (!backend)	1801	if (!backend)
944	{	1802	{
		1803	origflags = flags;
		1804
		1805	#if EV_USE_REALTIME
		1806	if (!have_realtime)
		1807	{
		1808	struct timespec ts;
		1809
		1810	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1811	have_realtime = 1;
		1812	}
		1813	#endif
		1814
945	#if EV_USE_MONOTONIC	1815	#if EV_USE_MONOTONIC
		1816	if (!have_monotonic)
946	{	1817	{
947	struct timespec ts;	1818	struct timespec ts;
		1819
948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1820	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
949	have_monotonic = 1;	1821	have_monotonic = 1;
950	}	1822	}
951	#endif	1823	#endif
952
953	ev_rt_now = ev_time ();
954	mn_now = get_clock ();
955	now_floor = mn_now;
956	rtmn_diff = ev_rt_now - mn_now;
957		1824
958	/* pid check not overridable via env */	1825	/* pid check not overridable via env */
959	#ifndef _WIN32	1826	#ifndef _WIN32
960	if (flags & EVFLAG_FORKCHECK)	1827	if (flags & EVFLAG_FORKCHECK)
961	curpid = getpid ();	1828	curpid = getpid ();
…		…
964	if (!(flags & EVFLAG_NOENV)	1831	if (!(flags & EVFLAG_NOENV)
965	&& !enable_secure ()	1832	&& !enable_secure ()
966	&& getenv ("LIBEV_FLAGS"))	1833	&& getenv ("LIBEV_FLAGS"))
967	flags = atoi (getenv ("LIBEV_FLAGS"));	1834	flags = atoi (getenv ("LIBEV_FLAGS"));
968		1835
969	if (!(flags & 0x0000ffffUL))	1836	ev_rt_now = ev_time ();
		1837	mn_now = get_clock ();
		1838	now_floor = mn_now;
		1839	rtmn_diff = ev_rt_now - mn_now;
		1840	#if EV_FEATURE_API
		1841	invoke_cb = ev_invoke_pending;
		1842	#endif
		1843
		1844	io_blocktime = 0.;
		1845	timeout_blocktime = 0.;
		1846	backend = 0;
		1847	backend_fd = -1;
		1848	sig_pending = 0;
		1849	#if EV_ASYNC_ENABLE
		1850	async_pending = 0;
		1851	#endif
		1852	pipe_write_skipped = 0;
		1853	pipe_write_wanted = 0;
		1854	#if EV_USE_INOTIFY
		1855	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		1856	#endif
		1857	#if EV_USE_SIGNALFD
		1858	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		1859	#endif
		1860
		1861	if (!(flags & EVBACKEND_MASK))
970	flags |= ev_recommended_backends ();	1862	flags |= ev_recommended_backends ();
971		1863
972	backend = 0;
973	backend_fd = -1;
974	#if EV_USE_INOTIFY	1864	#if EV_USE_IOCP
975	fs_fd = -2;	1865	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
976	#endif	1866	#endif
977
978	#if EV_USE_PORT	1867	#if EV_USE_PORT
979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1868	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
980	#endif	1869	#endif
981	#if EV_USE_KQUEUE	1870	#if EV_USE_KQUEUE
982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1871	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
989	#endif	1878	#endif
990	#if EV_USE_SELECT	1879	#if EV_USE_SELECT
991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1880	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
992	#endif	1881	#endif
993		1882
		1883	ev_prepare_init (&pending_w, pendingcb);
		1884
		1885	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
994	ev_init (&sigev, sigcb);	1886	ev_init (&pipe_w, pipecb);
995	ev_set_priority (&sigev, EV_MAXPRI);	1887	ev_set_priority (&pipe_w, EV_MAXPRI);
		1888	#endif
996	}	1889	}
997	}	1890	}
998		1891
999	static void noinline	1892	/* free up a loop structure */
		1893	void ecb_cold
1000	loop_destroy (EV_P)	1894	ev_loop_destroy (EV_P)
1001	{	1895	{
1002	int i;	1896	int i;
		1897
		1898	#if EV_MULTIPLICITY
		1899	/* mimic free (0) */
		1900	if (!EV_A)
		1901	return;
		1902	#endif
		1903
		1904	#if EV_CLEANUP_ENABLE
		1905	/* queue cleanup watchers (and execute them) */
		1906	if (expect_false (cleanupcnt))
		1907	{
		1908	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1909	EV_INVOKE_PENDING;
		1910	}
		1911	#endif
		1912
		1913	#if EV_CHILD_ENABLE
		1914	if (ev_is_active (&childev))
		1915	{
		1916	ev_ref (EV_A); /* child watcher */
		1917	ev_signal_stop (EV_A_ &childev);
		1918	}
		1919	#endif
		1920
		1921	if (ev_is_active (&pipe_w))
		1922	{
		1923	/*ev_ref (EV_A);*/
		1924	/*ev_io_stop (EV_A_ &pipe_w);*/
		1925
		1926	#if EV_USE_EVENTFD
		1927	if (evfd >= 0)
		1928	close (evfd);
		1929	#endif
		1930
		1931	if (evpipe [0] >= 0)
		1932	{
		1933	EV_WIN32_CLOSE_FD (evpipe [0]);
		1934	EV_WIN32_CLOSE_FD (evpipe [1]);
		1935	}
		1936	}
		1937
		1938	#if EV_USE_SIGNALFD
		1939	if (ev_is_active (&sigfd_w))
		1940	close (sigfd);
		1941	#endif
1003		1942
1004	#if EV_USE_INOTIFY	1943	#if EV_USE_INOTIFY
1005	if (fs_fd >= 0)	1944	if (fs_fd >= 0)
1006	close (fs_fd);	1945	close (fs_fd);
1007	#endif	1946	#endif
1008		1947
1009	if (backend_fd >= 0)	1948	if (backend_fd >= 0)
1010	close (backend_fd);	1949	close (backend_fd);
1011		1950
		1951	#if EV_USE_IOCP
		1952	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1953	#endif
1012	#if EV_USE_PORT	1954	#if EV_USE_PORT
1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1955	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1014	#endif	1956	#endif
1015	#if EV_USE_KQUEUE	1957	#if EV_USE_KQUEUE
1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1958	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1031	#if EV_IDLE_ENABLE	1973	#if EV_IDLE_ENABLE
1032	array_free (idle, [i]);	1974	array_free (idle, [i]);
1033	#endif	1975	#endif
1034	}	1976	}
1035		1977
		1978	ev_free (anfds); anfds = 0; anfdmax = 0;
		1979
1036	/* have to use the microsoft-never-gets-it-right macro */	1980	/* have to use the microsoft-never-gets-it-right macro */
		1981	array_free (rfeed, EMPTY);
1037	array_free (fdchange, EMPTY);	1982	array_free (fdchange, EMPTY);
1038	array_free (timer, EMPTY);	1983	array_free (timer, EMPTY);
1039	#if EV_PERIODIC_ENABLE	1984	#if EV_PERIODIC_ENABLE
1040	array_free (periodic, EMPTY);	1985	array_free (periodic, EMPTY);
1041	#endif	1986	#endif
		1987	#if EV_FORK_ENABLE
		1988	array_free (fork, EMPTY);
		1989	#endif
		1990	#if EV_CLEANUP_ENABLE
		1991	array_free (cleanup, EMPTY);
		1992	#endif
1042	array_free (prepare, EMPTY);	1993	array_free (prepare, EMPTY);
1043	array_free (check, EMPTY);	1994	array_free (check, EMPTY);
		1995	#if EV_ASYNC_ENABLE
		1996	array_free (async, EMPTY);
		1997	#endif
1044		1998
1045	backend = 0;	1999	backend = 0;
1046	}
1047		2000
		2001	#if EV_MULTIPLICITY
		2002	if (ev_is_default_loop (EV_A))
		2003	#endif
		2004	ev_default_loop_ptr = 0;
		2005	#if EV_MULTIPLICITY
		2006	else
		2007	ev_free (EV_A);
		2008	#endif
		2009	}
		2010
		2011	#if EV_USE_INOTIFY
1048	void inline_size infy_fork (EV_P);	2012	inline_size void infy_fork (EV_P);
		2013	#endif
1049		2014
1050	void inline_size	2015	inline_size void
1051	loop_fork (EV_P)	2016	loop_fork (EV_P)
1052	{	2017	{
1053	#if EV_USE_PORT	2018	#if EV_USE_PORT
1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	2019	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1055	#endif	2020	#endif
…		…
1061	#endif	2026	#endif
1062	#if EV_USE_INOTIFY	2027	#if EV_USE_INOTIFY
1063	infy_fork (EV_A);	2028	infy_fork (EV_A);
1064	#endif	2029	#endif
1065		2030
1066	if (ev_is_active (&sigev))	2031	if (ev_is_active (&pipe_w))
1067	{	2032	{
1068	/* default loop */	2033	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1069		2034
1070	ev_ref (EV_A);	2035	ev_ref (EV_A);
1071	ev_io_stop (EV_A_ &sigev);	2036	ev_io_stop (EV_A_ &pipe_w);
1072	close (sigpipe [0]);
1073	close (sigpipe [1]);
1074		2037
1075	while (pipe (sigpipe))	2038	#if EV_USE_EVENTFD
1076	syserr ("(libev) error creating pipe");	2039	if (evfd >= 0)
		2040	close (evfd);
		2041	#endif
1077		2042
		2043	if (evpipe [0] >= 0)
		2044	{
		2045	EV_WIN32_CLOSE_FD (evpipe [0]);
		2046	EV_WIN32_CLOSE_FD (evpipe [1]);
		2047	}
		2048
		2049	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1078	siginit (EV_A);	2050	evpipe_init (EV_A);
		2051	/* now iterate over everything, in case we missed something */
		2052	pipecb (EV_A_ &pipe_w, EV_READ);
		2053	#endif
1079	}	2054	}
1080		2055
1081	postfork = 0;	2056	postfork = 0;
1082	}	2057	}
1083		2058
1084	#if EV_MULTIPLICITY	2059	#if EV_MULTIPLICITY
		2060
1085	struct ev_loop *	2061	struct ev_loop * ecb_cold
1086	ev_loop_new (unsigned int flags)	2062	ev_loop_new (unsigned int flags)
1087	{	2063	{
1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2064	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1089		2065
1090	memset (loop, 0, sizeof (struct ev_loop));	2066	memset (EV_A, 0, sizeof (struct ev_loop));
1091
1092	loop_init (EV_A_ flags);	2067	loop_init (EV_A_ flags);
1093		2068
1094	if (ev_backend (EV_A))	2069	if (ev_backend (EV_A))
1095	return loop;	2070	return EV_A;
1096		2071
		2072	ev_free (EV_A);
1097	return 0;	2073	return 0;
1098	}	2074	}
1099		2075
1100	void	2076	#endif /* multiplicity */
1101	ev_loop_destroy (EV_P)
1102	{
1103	loop_destroy (EV_A);
1104	ev_free (loop);
1105	}
1106		2077
1107	void	2078	#if EV_VERIFY
1108	ev_loop_fork (EV_P)	2079	static void noinline ecb_cold
		2080	verify_watcher (EV_P_ W w)
1109	{	2081	{
1110	postfork = 1;	2082	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1111	}
1112		2083
		2084	if (w->pending)
		2085	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		2086	}
		2087
		2088	static void noinline ecb_cold
		2089	verify_heap (EV_P_ ANHE *heap, int N)
		2090	{
		2091	int i;
		2092
		2093	for (i = HEAP0; i < N + HEAP0; ++i)
		2094	{
		2095	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		2096	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		2097	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		2098
		2099	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		2100	}
		2101	}
		2102
		2103	static void noinline ecb_cold
		2104	array_verify (EV_P_ W *ws, int cnt)
		2105	{
		2106	while (cnt--)
		2107	{
		2108	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		2109	verify_watcher (EV_A_ ws [cnt]);
		2110	}
		2111	}
		2112	#endif
		2113
		2114	#if EV_FEATURE_API
		2115	void ecb_cold
		2116	ev_verify (EV_P)
		2117	{
		2118	#if EV_VERIFY
		2119	int i;
		2120	WL w;
		2121
		2122	assert (activecnt >= -1);
		2123
		2124	assert (fdchangemax >= fdchangecnt);
		2125	for (i = 0; i < fdchangecnt; ++i)
		2126	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		2127
		2128	assert (anfdmax >= 0);
		2129	for (i = 0; i < anfdmax; ++i)
		2130	for (w = anfds [i].head; w; w = w->next)
		2131	{
		2132	verify_watcher (EV_A_ (W)w);
		2133	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		2134	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		2135	}
		2136
		2137	assert (timermax >= timercnt);
		2138	verify_heap (EV_A_ timers, timercnt);
		2139
		2140	#if EV_PERIODIC_ENABLE
		2141	assert (periodicmax >= periodiccnt);
		2142	verify_heap (EV_A_ periodics, periodiccnt);
		2143	#endif
		2144
		2145	for (i = NUMPRI; i--; )
		2146	{
		2147	assert (pendingmax [i] >= pendingcnt [i]);
		2148	#if EV_IDLE_ENABLE
		2149	assert (idleall >= 0);
		2150	assert (idlemax [i] >= idlecnt [i]);
		2151	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		2152	#endif
		2153	}
		2154
		2155	#if EV_FORK_ENABLE
		2156	assert (forkmax >= forkcnt);
		2157	array_verify (EV_A_ (W *)forks, forkcnt);
		2158	#endif
		2159
		2160	#if EV_CLEANUP_ENABLE
		2161	assert (cleanupmax >= cleanupcnt);
		2162	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2163	#endif
		2164
		2165	#if EV_ASYNC_ENABLE
		2166	assert (asyncmax >= asynccnt);
		2167	array_verify (EV_A_ (W *)asyncs, asynccnt);
		2168	#endif
		2169
		2170	#if EV_PREPARE_ENABLE
		2171	assert (preparemax >= preparecnt);
		2172	array_verify (EV_A_ (W *)prepares, preparecnt);
		2173	#endif
		2174
		2175	#if EV_CHECK_ENABLE
		2176	assert (checkmax >= checkcnt);
		2177	array_verify (EV_A_ (W *)checks, checkcnt);
		2178	#endif
		2179
		2180	# if 0
		2181	#if EV_CHILD_ENABLE
		2182	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		2183	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		2184	#endif
		2185	# endif
		2186	#endif
		2187	}
1113	#endif	2188	#endif
1114		2189
1115	#if EV_MULTIPLICITY	2190	#if EV_MULTIPLICITY
1116	struct ev_loop *	2191	struct ev_loop * ecb_cold
1117	ev_default_loop_init (unsigned int flags)
1118	#else	2192	#else
1119	int	2193	int
		2194	#endif
1120	ev_default_loop (unsigned int flags)	2195	ev_default_loop (unsigned int flags)
1121	#endif
1122	{	2196	{
1123	if (sigpipe [0] == sigpipe [1])
1124	if (pipe (sigpipe))
1125	return 0;
1126
1127	if (!ev_default_loop_ptr)	2197	if (!ev_default_loop_ptr)
1128	{	2198	{
1129	#if EV_MULTIPLICITY	2199	#if EV_MULTIPLICITY
1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2200	EV_P = ev_default_loop_ptr = &default_loop_struct;
1131	#else	2201	#else
1132	ev_default_loop_ptr = 1;	2202	ev_default_loop_ptr = 1;
1133	#endif	2203	#endif
1134		2204
1135	loop_init (EV_A_ flags);	2205	loop_init (EV_A_ flags);
1136		2206
1137	if (ev_backend (EV_A))	2207	if (ev_backend (EV_A))
1138	{	2208	{
1139	siginit (EV_A);	2209	#if EV_CHILD_ENABLE
1140
1141	#ifndef _WIN32
1142	ev_signal_init (&childev, childcb, SIGCHLD);	2210	ev_signal_init (&childev, childcb, SIGCHLD);
1143	ev_set_priority (&childev, EV_MAXPRI);	2211	ev_set_priority (&childev, EV_MAXPRI);
1144	ev_signal_start (EV_A_ &childev);	2212	ev_signal_start (EV_A_ &childev);
1145	ev_unref (EV_A); /* child watcher should not keep loop alive */	2213	ev_unref (EV_A); /* child watcher should not keep loop alive */
1146	#endif	2214	#endif
…		…
1151		2219
1152	return ev_default_loop_ptr;	2220	return ev_default_loop_ptr;
1153	}	2221	}
1154		2222
1155	void	2223	void
1156	ev_default_destroy (void)	2224	ev_loop_fork (EV_P)
1157	{	2225	{
1158	#if EV_MULTIPLICITY	2226	postfork = 1; /* must be in line with ev_default_fork */
1159	struct ev_loop *loop = ev_default_loop_ptr;
1160	#endif
1161
1162	#ifndef _WIN32
1163	ev_ref (EV_A); /* child watcher */
1164	ev_signal_stop (EV_A_ &childev);
1165	#endif
1166
1167	ev_ref (EV_A); /* signal watcher */
1168	ev_io_stop (EV_A_ &sigev);
1169
1170	close (sigpipe [0]); sigpipe [0] = 0;
1171	close (sigpipe [1]); sigpipe [1] = 0;
1172
1173	loop_destroy (EV_A);
1174	}
1175
1176	void
1177	ev_default_fork (void)
1178	{
1179	#if EV_MULTIPLICITY
1180	struct ev_loop *loop = ev_default_loop_ptr;
1181	#endif
1182
1183	if (backend)
1184	postfork = 1;
1185	}	2227	}
1186		2228
1187	/*****************************************************************************/	2229	/*****************************************************************************/
1188		2230
1189	void	2231	void
1190	ev_invoke (EV_P_ void *w, int revents)	2232	ev_invoke (EV_P_ void *w, int revents)
1191	{	2233	{
1192	EV_CB_INVOKE ((W)w, revents);	2234	EV_CB_INVOKE ((W)w, revents);
1193	}	2235	}
1194		2236
1195	void inline_speed	2237	unsigned int
1196	call_pending (EV_P)	2238	ev_pending_count (EV_P)
		2239	{
		2240	int pri;
		2241	unsigned int count = 0;
		2242
		2243	for (pri = NUMPRI; pri--; )
		2244	count += pendingcnt [pri];
		2245
		2246	return count;
		2247	}
		2248
		2249	void noinline
		2250	ev_invoke_pending (EV_P)
1197	{	2251	{
1198	int pri;	2252	int pri;
1199		2253
1200	for (pri = NUMPRI; pri--; )	2254	for (pri = NUMPRI; pri--; )
1201	while (pendingcnt [pri])	2255	while (pendingcnt [pri])
1202	{	2256	{
1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2257	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1204		2258
1205	if (expect_true (p->w))
1206	{
1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1208
1209	p->w->pending = 0;	2259	p->w->pending = 0;
1210	EV_CB_INVOKE (p->w, p->events);	2260	EV_CB_INVOKE (p->w, p->events);
1211	}	2261	EV_FREQUENT_CHECK;
1212	}	2262	}
1213	}	2263	}
1214		2264
1215	void inline_size
1216	timers_reify (EV_P)
1217	{
1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
1219	{
1220	ev_timer *w = timers [0];
1221
1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1223
1224	/* first reschedule or stop timer */
1225	if (w->repeat)
1226	{
1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1228
1229	((WT)w)->at += w->repeat;
1230	if (((WT)w)->at < mn_now)
1231	((WT)w)->at = mn_now;
1232
1233	downheap ((WT *)timers, timercnt, 0);
1234	}
1235	else
1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1237
1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1239	}
1240	}
1241
1242	#if EV_PERIODIC_ENABLE
1243	void inline_size
1244	periodics_reify (EV_P)
1245	{
1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1247	{
1248	ev_periodic *w = periodics [0];
1249
1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1251
1252	/* first reschedule or stop timer */
1253	if (w->reschedule_cb)
1254	{
1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1257	downheap ((WT *)periodics, periodiccnt, 0);
1258	}
1259	else if (w->interval)
1260	{
1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1264	downheap ((WT *)periodics, periodiccnt, 0);
1265	}
1266	else
1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1268
1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1270	}
1271	}
1272
1273	static void noinline
1274	periodics_reschedule (EV_P)
1275	{
1276	int i;
1277
1278	/* adjust periodics after time jump */
1279	for (i = 0; i < periodiccnt; ++i)
1280	{
1281	ev_periodic *w = periodics [i];
1282
1283	if (w->reschedule_cb)
1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1285	else if (w->interval)
1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1287	}
1288
1289	/* now rebuild the heap */
1290	for (i = periodiccnt >> 1; i--; )
1291	downheap ((WT *)periodics, periodiccnt, i);
1292	}
1293	#endif
1294
1295	#if EV_IDLE_ENABLE	2265	#if EV_IDLE_ENABLE
1296	void inline_size	2266	/* make idle watchers pending. this handles the "call-idle */
		2267	/* only when higher priorities are idle" logic */
		2268	inline_size void
1297	idle_reify (EV_P)	2269	idle_reify (EV_P)
1298	{	2270	{
1299	if (expect_false (idleall))	2271	if (expect_false (idleall))
1300	{	2272	{
1301	int pri;	2273	int pri;
…		…
1313	}	2285	}
1314	}	2286	}
1315	}	2287	}
1316	#endif	2288	#endif
1317		2289
1318	void inline_speed	2290	/* make timers pending */
		2291	inline_size void
		2292	timers_reify (EV_P)
		2293	{
		2294	EV_FREQUENT_CHECK;
		2295
		2296	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2297	{
		2298	do
		2299	{
		2300	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2301
		2302	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2303
		2304	/* first reschedule or stop timer */
		2305	if (w->repeat)
		2306	{
		2307	ev_at (w) += w->repeat;
		2308	if (ev_at (w) < mn_now)
		2309	ev_at (w) = mn_now;
		2310
		2311	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2312
		2313	ANHE_at_cache (timers [HEAP0]);
		2314	downheap (timers, timercnt, HEAP0);
		2315	}
		2316	else
		2317	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2318
		2319	EV_FREQUENT_CHECK;
		2320	feed_reverse (EV_A_ (W)w);
		2321	}
		2322	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2323
		2324	feed_reverse_done (EV_A_ EV_TIMER);
		2325	}
		2326	}
		2327
		2328	#if EV_PERIODIC_ENABLE
		2329
		2330	static void noinline
		2331	periodic_recalc (EV_P_ ev_periodic *w)
		2332	{
		2333	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2334	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2335
		2336	/* the above almost always errs on the low side */
		2337	while (at <= ev_rt_now)
		2338	{
		2339	ev_tstamp nat = at + w->interval;
		2340
		2341	/* when resolution fails us, we use ev_rt_now */
		2342	if (expect_false (nat == at))
		2343	{
		2344	at = ev_rt_now;
		2345	break;
		2346	}
		2347
		2348	at = nat;
		2349	}
		2350
		2351	ev_at (w) = at;
		2352	}
		2353
		2354	/* make periodics pending */
		2355	inline_size void
		2356	periodics_reify (EV_P)
		2357	{
		2358	EV_FREQUENT_CHECK;
		2359
		2360	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2361	{
		2362	int feed_count = 0;
		2363
		2364	do
		2365	{
		2366	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2367
		2368	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2369
		2370	/* first reschedule or stop timer */
		2371	if (w->reschedule_cb)
		2372	{
		2373	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2374
		2375	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2376
		2377	ANHE_at_cache (periodics [HEAP0]);
		2378	downheap (periodics, periodiccnt, HEAP0);
		2379	}
		2380	else if (w->interval)
		2381	{
		2382	periodic_recalc (EV_A_ w);
		2383	ANHE_at_cache (periodics [HEAP0]);
		2384	downheap (periodics, periodiccnt, HEAP0);
		2385	}
		2386	else
		2387	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2388
		2389	EV_FREQUENT_CHECK;
		2390	feed_reverse (EV_A_ (W)w);
		2391	}
		2392	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2393
		2394	feed_reverse_done (EV_A_ EV_PERIODIC);
		2395	}
		2396	}
		2397
		2398	/* simply recalculate all periodics */
		2399	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		2400	static void noinline ecb_cold
		2401	periodics_reschedule (EV_P)
		2402	{
		2403	int i;
		2404
		2405	/* adjust periodics after time jump */
		2406	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2407	{
		2408	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2409
		2410	if (w->reschedule_cb)
		2411	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2412	else if (w->interval)
		2413	periodic_recalc (EV_A_ w);
		2414
		2415	ANHE_at_cache (periodics [i]);
		2416	}
		2417
		2418	reheap (periodics, periodiccnt);
		2419	}
		2420	#endif
		2421
		2422	/* adjust all timers by a given offset */
		2423	static void noinline ecb_cold
		2424	timers_reschedule (EV_P_ ev_tstamp adjust)
		2425	{
		2426	int i;
		2427
		2428	for (i = 0; i < timercnt; ++i)
		2429	{
		2430	ANHE *he = timers + i + HEAP0;
		2431	ANHE_w (*he)->at += adjust;
		2432	ANHE_at_cache (*he);
		2433	}
		2434	}
		2435
		2436	/* fetch new monotonic and realtime times from the kernel */
		2437	/* also detect if there was a timejump, and act accordingly */
		2438	inline_speed void
1319	time_update (EV_P_ ev_tstamp max_block)	2439	time_update (EV_P_ ev_tstamp max_block)
1320	{	2440	{
1321	int i;
1322
1323	#if EV_USE_MONOTONIC	2441	#if EV_USE_MONOTONIC
1324	if (expect_true (have_monotonic))	2442	if (expect_true (have_monotonic))
1325	{	2443	{
		2444	int i;
1326	ev_tstamp odiff = rtmn_diff;	2445	ev_tstamp odiff = rtmn_diff;
1327		2446
1328	mn_now = get_clock ();	2447	mn_now = get_clock ();
1329		2448
1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2449	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1346	* doesn't hurt either as we only do this on time-jumps or	2465	* doesn't hurt either as we only do this on time-jumps or
1347	* in the unlikely event of having been preempted here.	2466	* in the unlikely event of having been preempted here.
1348	*/	2467	*/
1349	for (i = 4; --i; )	2468	for (i = 4; --i; )
1350	{	2469	{
		2470	ev_tstamp diff;
1351	rtmn_diff = ev_rt_now - mn_now;	2471	rtmn_diff = ev_rt_now - mn_now;
1352		2472
1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2473	diff = odiff - rtmn_diff;
		2474
		2475	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1354	return; /* all is well */	2476	return; /* all is well */
1355		2477
1356	ev_rt_now = ev_time ();	2478	ev_rt_now = ev_time ();
1357	mn_now = get_clock ();	2479	mn_now = get_clock ();
1358	now_floor = mn_now;	2480	now_floor = mn_now;
1359	}	2481	}
1360		2482
		2483	/* no timer adjustment, as the monotonic clock doesn't jump */
		2484	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1361	# if EV_PERIODIC_ENABLE	2485	# if EV_PERIODIC_ENABLE
1362	periodics_reschedule (EV_A);	2486	periodics_reschedule (EV_A);
1363	# endif	2487	# endif
1364	/* no timer adjustment, as the monotonic clock doesn't jump */
1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1366	}	2488	}
1367	else	2489	else
1368	#endif	2490	#endif
1369	{	2491	{
1370	ev_rt_now = ev_time ();	2492	ev_rt_now = ev_time ();
1371		2493
1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2494	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1373	{	2495	{
		2496	/* adjust timers. this is easy, as the offset is the same for all of them */
		2497	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1374	#if EV_PERIODIC_ENABLE	2498	#if EV_PERIODIC_ENABLE
1375	periodics_reschedule (EV_A);	2499	periodics_reschedule (EV_A);
1376	#endif	2500	#endif
1377	/* adjust timers. this is easy, as the offset is the same for all of them */
1378	for (i = 0; i < timercnt; ++i)
1379	((WT)timers [i])->at += ev_rt_now - mn_now;
1380	}	2501	}
1381		2502
1382	mn_now = ev_rt_now;	2503	mn_now = ev_rt_now;
1383	}	2504	}
1384	}	2505	}
1385		2506
1386	void	2507	void
1387	ev_ref (EV_P)
1388	{
1389	++activecnt;
1390	}
1391
1392	void
1393	ev_unref (EV_P)
1394	{
1395	--activecnt;
1396	}
1397
1398	static int loop_done;
1399
1400	void
1401	ev_loop (EV_P_ int flags)	2508	ev_run (EV_P_ int flags)
1402	{	2509	{
1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2510	#if EV_FEATURE_API
1404	? EVUNLOOP_ONE	2511	++loop_depth;
1405	: EVUNLOOP_CANCEL;	2512	#endif
1406		2513
		2514	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		2515
		2516	loop_done = EVBREAK_CANCEL;
		2517
1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2518	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1408		2519
1409	do	2520	do
1410	{	2521	{
		2522	#if EV_VERIFY >= 2
		2523	ev_verify (EV_A);
		2524	#endif
		2525
1411	#ifndef _WIN32	2526	#ifndef _WIN32
1412	if (expect_false (curpid)) /* penalise the forking check even more */	2527	if (expect_false (curpid)) /* penalise the forking check even more */
1413	if (expect_false (getpid () != curpid))	2528	if (expect_false (getpid () != curpid))
1414	{	2529	{
1415	curpid = getpid ();	2530	curpid = getpid ();
…		…
1421	/* we might have forked, so queue fork handlers */	2536	/* we might have forked, so queue fork handlers */
1422	if (expect_false (postfork))	2537	if (expect_false (postfork))
1423	if (forkcnt)	2538	if (forkcnt)
1424	{	2539	{
1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2540	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1426	call_pending (EV_A);	2541	EV_INVOKE_PENDING;
1427	}	2542	}
1428	#endif	2543	#endif
1429		2544
		2545	#if EV_PREPARE_ENABLE
1430	/* queue prepare watchers (and execute them) */	2546	/* queue prepare watchers (and execute them) */
1431	if (expect_false (preparecnt))	2547	if (expect_false (preparecnt))
1432	{	2548	{
1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2549	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1434	call_pending (EV_A);	2550	EV_INVOKE_PENDING;
1435	}	2551	}
		2552	#endif
1436		2553
1437	if (expect_false (!activecnt))	2554	if (expect_false (loop_done))
1438	break;	2555	break;
1439		2556
1440	/* we might have forked, so reify kernel state if necessary */	2557	/* we might have forked, so reify kernel state if necessary */
1441	if (expect_false (postfork))	2558	if (expect_false (postfork))
1442	loop_fork (EV_A);	2559	loop_fork (EV_A);
…		…
1444	/* update fd-related kernel structures */	2561	/* update fd-related kernel structures */
1445	fd_reify (EV_A);	2562	fd_reify (EV_A);
1446		2563
1447	/* calculate blocking time */	2564	/* calculate blocking time */
1448	{	2565	{
1449	ev_tstamp block;	2566	ev_tstamp waittime = 0.;
		2567	ev_tstamp sleeptime = 0.;
1450		2568
1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))	2569	/* remember old timestamp for io_blocktime calculation */
1452	block = 0.; /* do not block at all */	2570	ev_tstamp prev_mn_now = mn_now;
1453	else	2571
		2572	/* update time to cancel out callback processing overhead */
		2573	time_update (EV_A_ 1e100);
		2574
		2575	/* from now on, we want a pipe-wake-up */
		2576	pipe_write_wanted = 1;
		2577
		2578	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1454	{	2579	{
1455	/* update time to cancel out callback processing overhead */
1456	time_update (EV_A_ 1e100);
1457
1458	block = MAX_BLOCKTIME;	2580	waittime = MAX_BLOCKTIME;
1459		2581
1460	if (timercnt)	2582	if (timercnt)
1461	{	2583	{
1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2584	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1463	if (block > to) block = to;	2585	if (waittime > to) waittime = to;
1464	}	2586	}
1465		2587
1466	#if EV_PERIODIC_ENABLE	2588	#if EV_PERIODIC_ENABLE
1467	if (periodiccnt)	2589	if (periodiccnt)
1468	{	2590	{
1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2591	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1470	if (block > to) block = to;	2592	if (waittime > to) waittime = to;
1471	}	2593	}
1472	#endif	2594	#endif
1473		2595
		2596	/* don't let timeouts decrease the waittime below timeout_blocktime */
		2597	if (expect_false (waittime < timeout_blocktime))
		2598	waittime = timeout_blocktime;
		2599
		2600	/* at this point, we NEED to wait, so we have to ensure */
		2601	/* to pass a minimum nonzero value to the backend */
		2602	if (expect_false (waittime < backend_mintime))
		2603	waittime = backend_mintime;
		2604
		2605	/* extra check because io_blocktime is commonly 0 */
1474	if (expect_false (block < 0.)) block = 0.;	2606	if (expect_false (io_blocktime))
		2607	{
		2608	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2609
		2610	if (sleeptime > waittime - backend_mintime)
		2611	sleeptime = waittime - backend_mintime;
		2612
		2613	if (expect_true (sleeptime > 0.))
		2614	{
		2615	ev_sleep (sleeptime);
		2616	waittime -= sleeptime;
		2617	}
		2618	}
1475	}	2619	}
1476		2620
		2621	#if EV_FEATURE_API
1477	++loop_count;	2622	++loop_count;
		2623	#endif
		2624	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1478	backend_poll (EV_A_ block);	2625	backend_poll (EV_A_ waittime);
		2626	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2627
		2628	pipe_write_wanted = 0;
		2629
		2630	if (pipe_write_skipped)
		2631	{
		2632	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2633	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2634	}
		2635
1479		2636
1480	/* update ev_rt_now, do magic */	2637	/* update ev_rt_now, do magic */
1481	time_update (EV_A_ block);	2638	time_update (EV_A_ waittime + sleeptime);
1482	}	2639	}
1483		2640
1484	/* queue pending timers and reschedule them */	2641	/* queue pending timers and reschedule them */
1485	timers_reify (EV_A); /* relative timers called last */	2642	timers_reify (EV_A); /* relative timers called last */
1486	#if EV_PERIODIC_ENABLE	2643	#if EV_PERIODIC_ENABLE
…		…
1490	#if EV_IDLE_ENABLE	2647	#if EV_IDLE_ENABLE
1491	/* queue idle watchers unless other events are pending */	2648	/* queue idle watchers unless other events are pending */
1492	idle_reify (EV_A);	2649	idle_reify (EV_A);
1493	#endif	2650	#endif
1494		2651
		2652	#if EV_CHECK_ENABLE
1495	/* queue check watchers, to be executed first */	2653	/* queue check watchers, to be executed first */
1496	if (expect_false (checkcnt))	2654	if (expect_false (checkcnt))
1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2655	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2656	#endif
1498		2657
1499	call_pending (EV_A);	2658	EV_INVOKE_PENDING;
1500
1501	}	2659	}
1502	while (expect_true (activecnt && !loop_done));	2660	while (expect_true (
		2661	activecnt
		2662	&& !loop_done
		2663	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		2664	));
1503		2665
1504	if (loop_done == EVUNLOOP_ONE)	2666	if (loop_done == EVBREAK_ONE)
1505	loop_done = EVUNLOOP_CANCEL;	2667	loop_done = EVBREAK_CANCEL;
		2668
		2669	#if EV_FEATURE_API
		2670	--loop_depth;
		2671	#endif
1506	}	2672	}
1507		2673
1508	void	2674	void
1509	ev_unloop (EV_P_ int how)	2675	ev_break (EV_P_ int how)
1510	{	2676	{
1511	loop_done = how;	2677	loop_done = how;
1512	}	2678	}
1513		2679
		2680	void
		2681	ev_ref (EV_P)
		2682	{
		2683	++activecnt;
		2684	}
		2685
		2686	void
		2687	ev_unref (EV_P)
		2688	{
		2689	--activecnt;
		2690	}
		2691
		2692	void
		2693	ev_now_update (EV_P)
		2694	{
		2695	time_update (EV_A_ 1e100);
		2696	}
		2697
		2698	void
		2699	ev_suspend (EV_P)
		2700	{
		2701	ev_now_update (EV_A);
		2702	}
		2703
		2704	void
		2705	ev_resume (EV_P)
		2706	{
		2707	ev_tstamp mn_prev = mn_now;
		2708
		2709	ev_now_update (EV_A);
		2710	timers_reschedule (EV_A_ mn_now - mn_prev);
		2711	#if EV_PERIODIC_ENABLE
		2712	/* TODO: really do this? */
		2713	periodics_reschedule (EV_A);
		2714	#endif
		2715	}
		2716
1514	/*****************************************************************************/	2717	/*****************************************************************************/
		2718	/* singly-linked list management, used when the expected list length is short */
1515		2719
1516	void inline_size	2720	inline_size void
1517	wlist_add (WL *head, WL elem)	2721	wlist_add (WL *head, WL elem)
1518	{	2722	{
1519	elem->next = *head;	2723	elem->next = *head;
1520	*head = elem;	2724	*head = elem;
1521	}	2725	}
1522		2726
1523	void inline_size	2727	inline_size void
1524	wlist_del (WL *head, WL elem)	2728	wlist_del (WL *head, WL elem)
1525	{	2729	{
1526	while (*head)	2730	while (*head)
1527	{	2731	{
1528	if (*head == elem)	2732	if (expect_true (*head == elem))
1529	{	2733	{
1530	*head = elem->next;	2734	*head = elem->next;
1531	return;	2735	break;
1532	}	2736	}
1533		2737
1534	head = &(*head)->next;	2738	head = &(*head)->next;
1535	}	2739	}
1536	}	2740	}
1537		2741
1538	void inline_speed	2742	/* internal, faster, version of ev_clear_pending */
		2743	inline_speed void
1539	clear_pending (EV_P_ W w)	2744	clear_pending (EV_P_ W w)
1540	{	2745	{
1541	if (w->pending)	2746	if (w->pending)
1542	{	2747	{
1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2748	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1544	w->pending = 0;	2749	w->pending = 0;
1545	}	2750	}
1546	}	2751	}
1547		2752
1548	int	2753	int
…		…
1552	int pending = w_->pending;	2757	int pending = w_->pending;
1553		2758
1554	if (expect_true (pending))	2759	if (expect_true (pending))
1555	{	2760	{
1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2761	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2762	p->w = (W)&pending_w;
1557	w_->pending = 0;	2763	w_->pending = 0;
1558	p->w = 0;
1559	return p->events;	2764	return p->events;
1560	}	2765	}
1561	else	2766	else
1562	return 0;	2767	return 0;
1563	}	2768	}
1564		2769
1565	void inline_size	2770	inline_size void
1566	pri_adjust (EV_P_ W w)	2771	pri_adjust (EV_P_ W w)
1567	{	2772	{
1568	int pri = w->priority;	2773	int pri = ev_priority (w);
1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2774	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2775	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1571	w->priority = pri;	2776	ev_set_priority (w, pri);
1572	}	2777	}
1573		2778
1574	void inline_speed	2779	inline_speed void
1575	ev_start (EV_P_ W w, int active)	2780	ev_start (EV_P_ W w, int active)
1576	{	2781	{
1577	pri_adjust (EV_A_ w);	2782	pri_adjust (EV_A_ w);
1578	w->active = active;	2783	w->active = active;
1579	ev_ref (EV_A);	2784	ev_ref (EV_A);
1580	}	2785	}
1581		2786
1582	void inline_size	2787	inline_size void
1583	ev_stop (EV_P_ W w)	2788	ev_stop (EV_P_ W w)
1584	{	2789	{
1585	ev_unref (EV_A);	2790	ev_unref (EV_A);
1586	w->active = 0;	2791	w->active = 0;
1587	}	2792	}
…		…
1594	int fd = w->fd;	2799	int fd = w->fd;
1595		2800
1596	if (expect_false (ev_is_active (w)))	2801	if (expect_false (ev_is_active (w)))
1597	return;	2802	return;
1598		2803
1599	assert (("ev_io_start called with negative fd", fd >= 0));	2804	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2805	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2806
		2807	EV_FREQUENT_CHECK;
1600		2808
1601	ev_start (EV_A_ (W)w, 1);	2809	ev_start (EV_A_ (W)w, 1);
1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2810	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2811	wlist_add (&anfds[fd].head, (WL)w);
1604		2812
1605	fd_change (EV_A_ fd);	2813	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
		2814	w->events &= ~EV__IOFDSET;
		2815
		2816	EV_FREQUENT_CHECK;
1606	}	2817	}
1607		2818
1608	void noinline	2819	void noinline
1609	ev_io_stop (EV_P_ ev_io *w)	2820	ev_io_stop (EV_P_ ev_io *w)
1610	{	2821	{
1611	clear_pending (EV_A_ (W)w);	2822	clear_pending (EV_A_ (W)w);
1612	if (expect_false (!ev_is_active (w)))	2823	if (expect_false (!ev_is_active (w)))
1613	return;	2824	return;
1614		2825
1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2826	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1616		2827
		2828	EV_FREQUENT_CHECK;
		2829
1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2830	wlist_del (&anfds[w->fd].head, (WL)w);
1618	ev_stop (EV_A_ (W)w);	2831	ev_stop (EV_A_ (W)w);
1619		2832
1620	fd_change (EV_A_ w->fd);	2833	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
		2834
		2835	EV_FREQUENT_CHECK;
1621	}	2836	}
1622		2837
1623	void noinline	2838	void noinline
1624	ev_timer_start (EV_P_ ev_timer *w)	2839	ev_timer_start (EV_P_ ev_timer *w)
1625	{	2840	{
1626	if (expect_false (ev_is_active (w)))	2841	if (expect_false (ev_is_active (w)))
1627	return;	2842	return;
1628		2843
1629	((WT)w)->at += mn_now;	2844	ev_at (w) += mn_now;
1630		2845
1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2846	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1632		2847
		2848	EV_FREQUENT_CHECK;
		2849
		2850	++timercnt;
1633	ev_start (EV_A_ (W)w, ++timercnt);	2851	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);	2852	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1635	timers [timercnt - 1] = w;	2853	ANHE_w (timers [ev_active (w)]) = (WT)w;
1636	upheap ((WT *)timers, timercnt - 1);	2854	ANHE_at_cache (timers [ev_active (w)]);
		2855	upheap (timers, ev_active (w));
1637		2856
		2857	EV_FREQUENT_CHECK;
		2858
1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2859	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1639	}	2860	}
1640		2861
1641	void noinline	2862	void noinline
1642	ev_timer_stop (EV_P_ ev_timer *w)	2863	ev_timer_stop (EV_P_ ev_timer *w)
1643	{	2864	{
1644	clear_pending (EV_A_ (W)w);	2865	clear_pending (EV_A_ (W)w);
1645	if (expect_false (!ev_is_active (w)))	2866	if (expect_false (!ev_is_active (w)))
1646	return;	2867	return;
1647		2868
1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	2869	EV_FREQUENT_CHECK;
1649		2870
1650	{	2871	{
1651	int active = ((W)w)->active;	2872	int active = ev_active (w);
1652		2873
		2874	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2875
		2876	--timercnt;
		2877
1653	if (expect_true (--active < --timercnt))	2878	if (expect_true (active < timercnt + HEAP0))
1654	{	2879	{
1655	timers [active] = timers [timercnt];	2880	timers [active] = timers [timercnt + HEAP0];
1656	adjustheap ((WT *)timers, timercnt, active);	2881	adjustheap (timers, timercnt, active);
1657	}	2882	}
1658	}	2883	}
1659		2884
1660	((WT)w)->at -= mn_now;	2885	ev_at (w) -= mn_now;
1661		2886
1662	ev_stop (EV_A_ (W)w);	2887	ev_stop (EV_A_ (W)w);
		2888
		2889	EV_FREQUENT_CHECK;
1663	}	2890	}
1664		2891
1665	void noinline	2892	void noinline
1666	ev_timer_again (EV_P_ ev_timer *w)	2893	ev_timer_again (EV_P_ ev_timer *w)
1667	{	2894	{
		2895	EV_FREQUENT_CHECK;
		2896
1668	if (ev_is_active (w))	2897	if (ev_is_active (w))
1669	{	2898	{
1670	if (w->repeat)	2899	if (w->repeat)
1671	{	2900	{
1672	((WT)w)->at = mn_now + w->repeat;	2901	ev_at (w) = mn_now + w->repeat;
		2902	ANHE_at_cache (timers [ev_active (w)]);
1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);	2903	adjustheap (timers, timercnt, ev_active (w));
1674	}	2904	}
1675	else	2905	else
1676	ev_timer_stop (EV_A_ w);	2906	ev_timer_stop (EV_A_ w);
1677	}	2907	}
1678	else if (w->repeat)	2908	else if (w->repeat)
1679	{	2909	{
1680	w->at = w->repeat;	2910	ev_at (w) = w->repeat;
1681	ev_timer_start (EV_A_ w);	2911	ev_timer_start (EV_A_ w);
1682	}	2912	}
		2913
		2914	EV_FREQUENT_CHECK;
		2915	}
		2916
		2917	ev_tstamp
		2918	ev_timer_remaining (EV_P_ ev_timer *w)
		2919	{
		2920	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1683	}	2921	}
1684		2922
1685	#if EV_PERIODIC_ENABLE	2923	#if EV_PERIODIC_ENABLE
1686	void noinline	2924	void noinline
1687	ev_periodic_start (EV_P_ ev_periodic *w)	2925	ev_periodic_start (EV_P_ ev_periodic *w)
1688	{	2926	{
1689	if (expect_false (ev_is_active (w)))	2927	if (expect_false (ev_is_active (w)))
1690	return;	2928	return;
1691		2929
1692	if (w->reschedule_cb)	2930	if (w->reschedule_cb)
1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2931	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1694	else if (w->interval)	2932	else if (w->interval)
1695	{	2933	{
1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2934	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1697	/* this formula differs from the one in periodic_reify because we do not always round up */	2935	periodic_recalc (EV_A_ w);
1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1699	}	2936	}
1700	else	2937	else
1701	((WT)w)->at = w->offset;	2938	ev_at (w) = w->offset;
1702		2939
		2940	EV_FREQUENT_CHECK;
		2941
		2942	++periodiccnt;
1703	ev_start (EV_A_ (W)w, ++periodiccnt);	2943	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);	2944	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1705	periodics [periodiccnt - 1] = w;	2945	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1706	upheap ((WT *)periodics, periodiccnt - 1);	2946	ANHE_at_cache (periodics [ev_active (w)]);
		2947	upheap (periodics, ev_active (w));
1707		2948
		2949	EV_FREQUENT_CHECK;
		2950
1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2951	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1709	}	2952	}
1710		2953
1711	void noinline	2954	void noinline
1712	ev_periodic_stop (EV_P_ ev_periodic *w)	2955	ev_periodic_stop (EV_P_ ev_periodic *w)
1713	{	2956	{
1714	clear_pending (EV_A_ (W)w);	2957	clear_pending (EV_A_ (W)w);
1715	if (expect_false (!ev_is_active (w)))	2958	if (expect_false (!ev_is_active (w)))
1716	return;	2959	return;
1717		2960
1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	2961	EV_FREQUENT_CHECK;
1719		2962
1720	{	2963	{
1721	int active = ((W)w)->active;	2964	int active = ev_active (w);
1722		2965
		2966	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2967
		2968	--periodiccnt;
		2969
1723	if (expect_true (--active < --periodiccnt))	2970	if (expect_true (active < periodiccnt + HEAP0))
1724	{	2971	{
1725	periodics [active] = periodics [periodiccnt];	2972	periodics [active] = periodics [periodiccnt + HEAP0];
1726	adjustheap ((WT *)periodics, periodiccnt, active);	2973	adjustheap (periodics, periodiccnt, active);
1727	}	2974	}
1728	}	2975	}
1729		2976
1730	ev_stop (EV_A_ (W)w);	2977	ev_stop (EV_A_ (W)w);
		2978
		2979	EV_FREQUENT_CHECK;
1731	}	2980	}
1732		2981
1733	void noinline	2982	void noinline
1734	ev_periodic_again (EV_P_ ev_periodic *w)	2983	ev_periodic_again (EV_P_ ev_periodic *w)
1735	{	2984	{
…		…
1741		2990
1742	#ifndef SA_RESTART	2991	#ifndef SA_RESTART
1743	# define SA_RESTART 0	2992	# define SA_RESTART 0
1744	#endif	2993	#endif
1745		2994
		2995	#if EV_SIGNAL_ENABLE
		2996
1746	void noinline	2997	void noinline
1747	ev_signal_start (EV_P_ ev_signal *w)	2998	ev_signal_start (EV_P_ ev_signal *w)
1748	{	2999	{
1749	#if EV_MULTIPLICITY
1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1751	#endif
1752	if (expect_false (ev_is_active (w)))	3000	if (expect_false (ev_is_active (w)))
1753	return;	3001	return;
1754		3002
1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	3003	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
		3004
		3005	#if EV_MULTIPLICITY
		3006	assert (("libev: a signal must not be attached to two different loops",
		3007	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
		3008
		3009	signals [w->signum - 1].loop = EV_A;
		3010	#endif
		3011
		3012	EV_FREQUENT_CHECK;
		3013
		3014	#if EV_USE_SIGNALFD
		3015	if (sigfd == -2)
		3016	{
		3017	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
		3018	if (sigfd < 0 && errno == EINVAL)
		3019	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
		3020
		3021	if (sigfd >= 0)
		3022	{
		3023	fd_intern (sigfd); /* doing it twice will not hurt */
		3024
		3025	sigemptyset (&sigfd_set);
		3026
		3027	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		3028	ev_set_priority (&sigfd_w, EV_MAXPRI);
		3029	ev_io_start (EV_A_ &sigfd_w);
		3030	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		3031	}
		3032	}
		3033
		3034	if (sigfd >= 0)
		3035	{
		3036	/* TODO: check .head */
		3037	sigaddset (&sigfd_set, w->signum);
		3038	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		3039
		3040	signalfd (sigfd, &sigfd_set, 0);
		3041	}
		3042	#endif
1756		3043
1757	ev_start (EV_A_ (W)w, 1);	3044	ev_start (EV_A_ (W)w, 1);
1758	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1759	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	3045	wlist_add (&signals [w->signum - 1].head, (WL)w);
1760		3046
1761	if (!((WL)w)->next)	3047	if (!((WL)w)->next)
		3048	# if EV_USE_SIGNALFD
		3049	if (sigfd < 0) /*TODO*/
		3050	# endif
1762	{	3051	{
1763	#if _WIN32	3052	# ifdef _WIN32
		3053	evpipe_init (EV_A);
		3054
1764	signal (w->signum, sighandler);	3055	signal (w->signum, ev_sighandler);
1765	#else	3056	# else
1766	struct sigaction sa;	3057	struct sigaction sa;
		3058
		3059	evpipe_init (EV_A);
		3060
1767	sa.sa_handler = sighandler;	3061	sa.sa_handler = ev_sighandler;
1768	sigfillset (&sa.sa_mask);	3062	sigfillset (&sa.sa_mask);
1769	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3063	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1770	sigaction (w->signum, &sa, 0);	3064	sigaction (w->signum, &sa, 0);
		3065
		3066	if (origflags & EVFLAG_NOSIGMASK)
		3067	{
		3068	sigemptyset (&sa.sa_mask);
		3069	sigaddset (&sa.sa_mask, w->signum);
		3070	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3071	}
1771	#endif	3072	#endif
1772	}	3073	}
		3074
		3075	EV_FREQUENT_CHECK;
1773	}	3076	}
1774		3077
1775	void noinline	3078	void noinline
1776	ev_signal_stop (EV_P_ ev_signal *w)	3079	ev_signal_stop (EV_P_ ev_signal *w)
1777	{	3080	{
1778	clear_pending (EV_A_ (W)w);	3081	clear_pending (EV_A_ (W)w);
1779	if (expect_false (!ev_is_active (w)))	3082	if (expect_false (!ev_is_active (w)))
1780	return;	3083	return;
1781		3084
		3085	EV_FREQUENT_CHECK;
		3086
1782	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	3087	wlist_del (&signals [w->signum - 1].head, (WL)w);
1783	ev_stop (EV_A_ (W)w);	3088	ev_stop (EV_A_ (W)w);
1784		3089
1785	if (!signals [w->signum - 1].head)	3090	if (!signals [w->signum - 1].head)
		3091	{
		3092	#if EV_MULTIPLICITY
		3093	signals [w->signum - 1].loop = 0; /* unattach from signal */
		3094	#endif
		3095	#if EV_USE_SIGNALFD
		3096	if (sigfd >= 0)
		3097	{
		3098	sigset_t ss;
		3099
		3100	sigemptyset (&ss);
		3101	sigaddset (&ss, w->signum);
		3102	sigdelset (&sigfd_set, w->signum);
		3103
		3104	signalfd (sigfd, &sigfd_set, 0);
		3105	sigprocmask (SIG_UNBLOCK, &ss, 0);
		3106	}
		3107	else
		3108	#endif
1786	signal (w->signum, SIG_DFL);	3109	signal (w->signum, SIG_DFL);
		3110	}
		3111
		3112	EV_FREQUENT_CHECK;
1787	}	3113	}
		3114
		3115	#endif
		3116
		3117	#if EV_CHILD_ENABLE
1788		3118
1789	void	3119	void
1790	ev_child_start (EV_P_ ev_child *w)	3120	ev_child_start (EV_P_ ev_child *w)
1791	{	3121	{
1792	#if EV_MULTIPLICITY	3122	#if EV_MULTIPLICITY
1793	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3123	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1794	#endif	3124	#endif
1795	if (expect_false (ev_is_active (w)))	3125	if (expect_false (ev_is_active (w)))
1796	return;	3126	return;
1797		3127
		3128	EV_FREQUENT_CHECK;
		3129
1798	ev_start (EV_A_ (W)w, 1);	3130	ev_start (EV_A_ (W)w, 1);
1799	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3131	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
		3132
		3133	EV_FREQUENT_CHECK;
1800	}	3134	}
1801		3135
1802	void	3136	void
1803	ev_child_stop (EV_P_ ev_child *w)	3137	ev_child_stop (EV_P_ ev_child *w)
1804	{	3138	{
1805	clear_pending (EV_A_ (W)w);	3139	clear_pending (EV_A_ (W)w);
1806	if (expect_false (!ev_is_active (w)))	3140	if (expect_false (!ev_is_active (w)))
1807	return;	3141	return;
1808		3142
		3143	EV_FREQUENT_CHECK;
		3144
1809	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3145	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1810	ev_stop (EV_A_ (W)w);	3146	ev_stop (EV_A_ (W)w);
		3147
		3148	EV_FREQUENT_CHECK;
1811	}	3149	}
		3150
		3151	#endif
1812		3152
1813	#if EV_STAT_ENABLE	3153	#if EV_STAT_ENABLE
1814		3154
1815	# ifdef _WIN32	3155	# ifdef _WIN32
1816	# undef lstat	3156	# undef lstat
1817	# define lstat(a,b) _stati64 (a,b)	3157	# define lstat(a,b) _stati64 (a,b)
1818	# endif	3158	# endif
1819		3159
1820	#define DEF_STAT_INTERVAL 5.0074891	3160	#define DEF_STAT_INTERVAL 5.0074891
		3161	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1821	#define MIN_STAT_INTERVAL 0.1074891	3162	#define MIN_STAT_INTERVAL 0.1074891
1822		3163
1823	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	3164	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1824		3165
1825	#if EV_USE_INOTIFY	3166	#if EV_USE_INOTIFY
1826	# define EV_INOTIFY_BUFSIZE 8192	3167
		3168	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		3169	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1827		3170
1828	static void noinline	3171	static void noinline
1829	infy_add (EV_P_ ev_stat *w)	3172	infy_add (EV_P_ ev_stat *w)
1830	{	3173	{
1831	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	3174	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
1832		3175
1833	if (w->wd < 0)	3176	if (w->wd >= 0)
		3177	{
		3178	struct statfs sfs;
		3179
		3180	/* now local changes will be tracked by inotify, but remote changes won't */
		3181	/* unless the filesystem is known to be local, we therefore still poll */
		3182	/* also do poll on <2.6.25, but with normal frequency */
		3183
		3184	if (!fs_2625)
		3185	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3186	else if (!statfs (w->path, &sfs)
		3187	&& (sfs.f_type == 0x1373 /* devfs */
		3188	|| sfs.f_type == 0xEF53 /* ext2/3 */
		3189	|| sfs.f_type == 0x3153464a /* jfs */
		3190	|| sfs.f_type == 0x52654973 /* reiser3 */
		3191	|| sfs.f_type == 0x01021994 /* tempfs */
		3192	|| sfs.f_type == 0x58465342 /* xfs */))
		3193	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		3194	else
		3195	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1834	{	3196	}
1835	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	3197	else
		3198	{
		3199	/* can't use inotify, continue to stat */
		3200	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1836		3201
1837	/* monitor some parent directory for speedup hints */	3202	/* if path is not there, monitor some parent directory for speedup hints */
		3203	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		3204	/* but an efficiency issue only */
1838	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	3205	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
1839	{	3206	{
1840	char path [4096];	3207	char path [4096];
1841	strcpy (path, w->path);	3208	strcpy (path, w->path);
1842		3209
…		…
1845	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	3212	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
1846	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	3213	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
1847		3214
1848	char *pend = strrchr (path, '/');	3215	char *pend = strrchr (path, '/');
1849		3216
1850	if (!pend)	3217	if (!pend || pend == path)
1851	break; /* whoops, no '/', complain to your admin */	3218	break;
1852		3219
1853	*pend = 0;	3220	*pend = 0;
1854	w->wd = inotify_add_watch (fs_fd, path, mask);	3221	w->wd = inotify_add_watch (fs_fd, path, mask);
1855	}	3222	}
1856	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3223	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
1857	}	3224	}
1858	}	3225	}
1859	else
1860	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
1861		3226
1862	if (w->wd >= 0)	3227	if (w->wd >= 0)
1863	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3228	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
		3229
		3230	/* now re-arm timer, if required */
		3231	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		3232	ev_timer_again (EV_A_ &w->timer);
		3233	if (ev_is_active (&w->timer)) ev_unref (EV_A);
1864	}	3234	}
1865		3235
1866	static void noinline	3236	static void noinline
1867	infy_del (EV_P_ ev_stat *w)	3237	infy_del (EV_P_ ev_stat *w)
1868	{	3238	{
…		…
1871		3241
1872	if (wd < 0)	3242	if (wd < 0)
1873	return;	3243	return;
1874		3244
1875	w->wd = -2;	3245	w->wd = -2;
1876	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3246	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
1877	wlist_del (&fs_hash [slot].head, (WL)w);	3247	wlist_del (&fs_hash [slot].head, (WL)w);
1878		3248
1879	/* remove this watcher, if others are watching it, they will rearm */	3249	/* remove this watcher, if others are watching it, they will rearm */
1880	inotify_rm_watch (fs_fd, wd);	3250	inotify_rm_watch (fs_fd, wd);
1881	}	3251	}
1882		3252
1883	static void noinline	3253	static void noinline
1884	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3254	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
1885	{	3255	{
1886	if (slot < 0)	3256	if (slot < 0)
1887	/* overflow, need to check for all hahs slots */	3257	/* overflow, need to check for all hash slots */
1888	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3258	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1889	infy_wd (EV_A_ slot, wd, ev);	3259	infy_wd (EV_A_ slot, wd, ev);
1890	else	3260	else
1891	{	3261	{
1892	WL w_;	3262	WL w_;
1893		3263
1894	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3264	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
1895	{	3265	{
1896	ev_stat *w = (ev_stat *)w_;	3266	ev_stat *w = (ev_stat *)w_;
1897	w_ = w_->next; /* lets us remove this watcher and all before it */	3267	w_ = w_->next; /* lets us remove this watcher and all before it */
1898		3268
1899	if (w->wd == wd || wd == -1)	3269	if (w->wd == wd || wd == -1)
1900	{	3270	{
1901	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3271	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
1902	{	3272	{
		3273	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
1903	w->wd = -1;	3274	w->wd = -1;
1904	infy_add (EV_A_ w); /* re-add, no matter what */	3275	infy_add (EV_A_ w); /* re-add, no matter what */
1905	}	3276	}
1906		3277
1907	stat_timer_cb (EV_A_ &w->timer, 0);	3278	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
1912		3283
1913	static void	3284	static void
1914	infy_cb (EV_P_ ev_io *w, int revents)	3285	infy_cb (EV_P_ ev_io *w, int revents)
1915	{	3286	{
1916	char buf [EV_INOTIFY_BUFSIZE];	3287	char buf [EV_INOTIFY_BUFSIZE];
1917	struct inotify_event *ev = (struct inotify_event *)buf;
1918	int ofs;	3288	int ofs;
1919	int len = read (fs_fd, buf, sizeof (buf));	3289	int len = read (fs_fd, buf, sizeof (buf));
1920		3290
1921	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3291	for (ofs = 0; ofs < len; )
		3292	{
		3293	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
1922	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3294	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3295	ofs += sizeof (struct inotify_event) + ev->len;
		3296	}
1923	}	3297	}
1924		3298
1925	void inline_size	3299	inline_size void ecb_cold
		3300	ev_check_2625 (EV_P)
		3301	{
		3302	/* kernels < 2.6.25 are borked
		3303	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3304	*/
		3305	if (ev_linux_version () < 0x020619)
		3306	return;
		3307
		3308	fs_2625 = 1;
		3309	}
		3310
		3311	inline_size int
		3312	infy_newfd (void)
		3313	{
		3314	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3315	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3316	if (fd >= 0)
		3317	return fd;
		3318	#endif
		3319	return inotify_init ();
		3320	}
		3321
		3322	inline_size void
1926	infy_init (EV_P)	3323	infy_init (EV_P)
1927	{	3324	{
1928	if (fs_fd != -2)	3325	if (fs_fd != -2)
1929	return;	3326	return;
1930		3327
		3328	fs_fd = -1;
		3329
		3330	ev_check_2625 (EV_A);
		3331
1931	fs_fd = inotify_init ();	3332	fs_fd = infy_newfd ();
1932		3333
1933	if (fs_fd >= 0)	3334	if (fs_fd >= 0)
1934	{	3335	{
		3336	fd_intern (fs_fd);
1935	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3337	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
1936	ev_set_priority (&fs_w, EV_MAXPRI);	3338	ev_set_priority (&fs_w, EV_MAXPRI);
1937	ev_io_start (EV_A_ &fs_w);	3339	ev_io_start (EV_A_ &fs_w);
		3340	ev_unref (EV_A);
1938	}	3341	}
1939	}	3342	}
1940		3343
1941	void inline_size	3344	inline_size void
1942	infy_fork (EV_P)	3345	infy_fork (EV_P)
1943	{	3346	{
1944	int slot;	3347	int slot;
1945		3348
1946	if (fs_fd < 0)	3349	if (fs_fd < 0)
1947	return;	3350	return;
1948		3351
		3352	ev_ref (EV_A);
		3353	ev_io_stop (EV_A_ &fs_w);
1949	close (fs_fd);	3354	close (fs_fd);
1950	fs_fd = inotify_init ();	3355	fs_fd = infy_newfd ();
1951		3356
		3357	if (fs_fd >= 0)
		3358	{
		3359	fd_intern (fs_fd);
		3360	ev_io_set (&fs_w, fs_fd, EV_READ);
		3361	ev_io_start (EV_A_ &fs_w);
		3362	ev_unref (EV_A);
		3363	}
		3364
1952	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3365	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
1953	{	3366	{
1954	WL w_ = fs_hash [slot].head;	3367	WL w_ = fs_hash [slot].head;
1955	fs_hash [slot].head = 0;	3368	fs_hash [slot].head = 0;
1956		3369
1957	while (w_)	3370	while (w_)
…		…
1962	w->wd = -1;	3375	w->wd = -1;
1963		3376
1964	if (fs_fd >= 0)	3377	if (fs_fd >= 0)
1965	infy_add (EV_A_ w); /* re-add, no matter what */	3378	infy_add (EV_A_ w); /* re-add, no matter what */
1966	else	3379	else
		3380	{
		3381	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3382	if (ev_is_active (&w->timer)) ev_ref (EV_A);
1967	ev_timer_start (EV_A_ &w->timer);	3383	ev_timer_again (EV_A_ &w->timer);
		3384	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3385	}
1968	}	3386	}
1969
1970	}	3387	}
1971	}	3388	}
1972		3389
		3390	#endif
		3391
		3392	#ifdef _WIN32
		3393	# define EV_LSTAT(p,b) _stati64 (p, b)
		3394	#else
		3395	# define EV_LSTAT(p,b) lstat (p, b)
1973	#endif	3396	#endif
1974		3397
1975	void	3398	void
1976	ev_stat_stat (EV_P_ ev_stat *w)	3399	ev_stat_stat (EV_P_ ev_stat *w)
1977	{	3400	{
…		…
1984	static void noinline	3407	static void noinline
1985	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3408	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
1986	{	3409	{
1987	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3410	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
1988		3411
1989	/* we copy this here each the time so that */	3412	ev_statdata prev = w->attr;
1990	/* prev has the old value when the callback gets invoked */
1991	w->prev = w->attr;
1992	ev_stat_stat (EV_A_ w);	3413	ev_stat_stat (EV_A_ w);
1993		3414
1994	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3415	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
1995	if (	3416	if (
1996	w->prev.st_dev != w->attr.st_dev	3417	prev.st_dev != w->attr.st_dev
1997	|| w->prev.st_ino != w->attr.st_ino	3418	|| prev.st_ino != w->attr.st_ino
1998	|| w->prev.st_mode != w->attr.st_mode	3419	|| prev.st_mode != w->attr.st_mode
1999	|| w->prev.st_nlink != w->attr.st_nlink	3420	|| prev.st_nlink != w->attr.st_nlink
2000	|| w->prev.st_uid != w->attr.st_uid	3421	|| prev.st_uid != w->attr.st_uid
2001	|| w->prev.st_gid != w->attr.st_gid	3422	|| prev.st_gid != w->attr.st_gid
2002	|| w->prev.st_rdev != w->attr.st_rdev	3423	|| prev.st_rdev != w->attr.st_rdev
2003	|| w->prev.st_size != w->attr.st_size	3424	|| prev.st_size != w->attr.st_size
2004	|| w->prev.st_atime != w->attr.st_atime	3425	|| prev.st_atime != w->attr.st_atime
2005	|| w->prev.st_mtime != w->attr.st_mtime	3426	|| prev.st_mtime != w->attr.st_mtime
2006	|| w->prev.st_ctime != w->attr.st_ctime	3427	|| prev.st_ctime != w->attr.st_ctime
2007	) {	3428	) {
		3429	/* we only update w->prev on actual differences */
		3430	/* in case we test more often than invoke the callback, */
		3431	/* to ensure that prev is always different to attr */
		3432	w->prev = prev;
		3433
2008	#if EV_USE_INOTIFY	3434	#if EV_USE_INOTIFY
		3435	if (fs_fd >= 0)
		3436	{
2009	infy_del (EV_A_ w);	3437	infy_del (EV_A_ w);
2010	infy_add (EV_A_ w);	3438	infy_add (EV_A_ w);
2011	ev_stat_stat (EV_A_ w); /* avoid race... */	3439	ev_stat_stat (EV_A_ w); /* avoid race... */
		3440	}
2012	#endif	3441	#endif
2013		3442
2014	ev_feed_event (EV_A_ w, EV_STAT);	3443	ev_feed_event (EV_A_ w, EV_STAT);
2015	}	3444	}
2016	}	3445	}
…		…
2019	ev_stat_start (EV_P_ ev_stat *w)	3448	ev_stat_start (EV_P_ ev_stat *w)
2020	{	3449	{
2021	if (expect_false (ev_is_active (w)))	3450	if (expect_false (ev_is_active (w)))
2022	return;	3451	return;
2023		3452
2024	/* since we use memcmp, we need to clear any padding data etc. */
2025	memset (&w->prev, 0, sizeof (ev_statdata));
2026	memset (&w->attr, 0, sizeof (ev_statdata));
2027
2028	ev_stat_stat (EV_A_ w);	3453	ev_stat_stat (EV_A_ w);
2029		3454
		3455	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2030	if (w->interval < MIN_STAT_INTERVAL)	3456	w->interval = MIN_STAT_INTERVAL;
2031	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2032		3457
2033	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3458	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2034	ev_set_priority (&w->timer, ev_priority (w));	3459	ev_set_priority (&w->timer, ev_priority (w));
2035		3460
2036	#if EV_USE_INOTIFY	3461	#if EV_USE_INOTIFY
2037	infy_init (EV_A);	3462	infy_init (EV_A);
2038		3463
2039	if (fs_fd >= 0)	3464	if (fs_fd >= 0)
2040	infy_add (EV_A_ w);	3465	infy_add (EV_A_ w);
2041	else	3466	else
2042	#endif	3467	#endif
		3468	{
2043	ev_timer_start (EV_A_ &w->timer);	3469	ev_timer_again (EV_A_ &w->timer);
		3470	ev_unref (EV_A);
		3471	}
2044		3472
2045	ev_start (EV_A_ (W)w, 1);	3473	ev_start (EV_A_ (W)w, 1);
		3474
		3475	EV_FREQUENT_CHECK;
2046	}	3476	}
2047		3477
2048	void	3478	void
2049	ev_stat_stop (EV_P_ ev_stat *w)	3479	ev_stat_stop (EV_P_ ev_stat *w)
2050	{	3480	{
2051	clear_pending (EV_A_ (W)w);	3481	clear_pending (EV_A_ (W)w);
2052	if (expect_false (!ev_is_active (w)))	3482	if (expect_false (!ev_is_active (w)))
2053	return;	3483	return;
2054		3484
		3485	EV_FREQUENT_CHECK;
		3486
2055	#if EV_USE_INOTIFY	3487	#if EV_USE_INOTIFY
2056	infy_del (EV_A_ w);	3488	infy_del (EV_A_ w);
2057	#endif	3489	#endif
		3490
		3491	if (ev_is_active (&w->timer))
		3492	{
		3493	ev_ref (EV_A);
2058	ev_timer_stop (EV_A_ &w->timer);	3494	ev_timer_stop (EV_A_ &w->timer);
		3495	}
2059		3496
2060	ev_stop (EV_A_ (W)w);	3497	ev_stop (EV_A_ (W)w);
		3498
		3499	EV_FREQUENT_CHECK;
2061	}	3500	}
2062	#endif	3501	#endif
2063		3502
2064	#if EV_IDLE_ENABLE	3503	#if EV_IDLE_ENABLE
2065	void	3504	void
…		…
2068	if (expect_false (ev_is_active (w)))	3507	if (expect_false (ev_is_active (w)))
2069	return;	3508	return;
2070		3509
2071	pri_adjust (EV_A_ (W)w);	3510	pri_adjust (EV_A_ (W)w);
2072		3511
		3512	EV_FREQUENT_CHECK;
		3513
2073	{	3514	{
2074	int active = ++idlecnt [ABSPRI (w)];	3515	int active = ++idlecnt [ABSPRI (w)];
2075		3516
2076	++idleall;	3517	++idleall;
2077	ev_start (EV_A_ (W)w, active);	3518	ev_start (EV_A_ (W)w, active);
2078		3519
2079	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3520	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2080	idles [ABSPRI (w)][active - 1] = w;	3521	idles [ABSPRI (w)][active - 1] = w;
2081	}	3522	}
		3523
		3524	EV_FREQUENT_CHECK;
2082	}	3525	}
2083		3526
2084	void	3527	void
2085	ev_idle_stop (EV_P_ ev_idle *w)	3528	ev_idle_stop (EV_P_ ev_idle *w)
2086	{	3529	{
2087	clear_pending (EV_A_ (W)w);	3530	clear_pending (EV_A_ (W)w);
2088	if (expect_false (!ev_is_active (w)))	3531	if (expect_false (!ev_is_active (w)))
2089	return;	3532	return;
2090		3533
		3534	EV_FREQUENT_CHECK;
		3535
2091	{	3536	{
2092	int active = ((W)w)->active;	3537	int active = ev_active (w);
2093		3538
2094	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3539	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2095	((W)idles [ABSPRI (w)][active - 1])->active = active;	3540	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2096		3541
2097	ev_stop (EV_A_ (W)w);	3542	ev_stop (EV_A_ (W)w);
2098	--idleall;	3543	--idleall;
2099	}	3544	}
2100	}
2101	#endif
2102		3545
		3546	EV_FREQUENT_CHECK;
		3547	}
		3548	#endif
		3549
		3550	#if EV_PREPARE_ENABLE
2103	void	3551	void
2104	ev_prepare_start (EV_P_ ev_prepare *w)	3552	ev_prepare_start (EV_P_ ev_prepare *w)
2105	{	3553	{
2106	if (expect_false (ev_is_active (w)))	3554	if (expect_false (ev_is_active (w)))
2107	return;	3555	return;
		3556
		3557	EV_FREQUENT_CHECK;
2108		3558
2109	ev_start (EV_A_ (W)w, ++preparecnt);	3559	ev_start (EV_A_ (W)w, ++preparecnt);
2110	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3560	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2111	prepares [preparecnt - 1] = w;	3561	prepares [preparecnt - 1] = w;
		3562
		3563	EV_FREQUENT_CHECK;
2112	}	3564	}
2113		3565
2114	void	3566	void
2115	ev_prepare_stop (EV_P_ ev_prepare *w)	3567	ev_prepare_stop (EV_P_ ev_prepare *w)
2116	{	3568	{
2117	clear_pending (EV_A_ (W)w);	3569	clear_pending (EV_A_ (W)w);
2118	if (expect_false (!ev_is_active (w)))	3570	if (expect_false (!ev_is_active (w)))
2119	return;	3571	return;
2120		3572
		3573	EV_FREQUENT_CHECK;
		3574
2121	{	3575	{
2122	int active = ((W)w)->active;	3576	int active = ev_active (w);
		3577
2123	prepares [active - 1] = prepares [--preparecnt];	3578	prepares [active - 1] = prepares [--preparecnt];
2124	((W)prepares [active - 1])->active = active;	3579	ev_active (prepares [active - 1]) = active;
2125	}	3580	}
2126		3581
2127	ev_stop (EV_A_ (W)w);	3582	ev_stop (EV_A_ (W)w);
2128	}
2129		3583
		3584	EV_FREQUENT_CHECK;
		3585	}
		3586	#endif
		3587
		3588	#if EV_CHECK_ENABLE
2130	void	3589	void
2131	ev_check_start (EV_P_ ev_check *w)	3590	ev_check_start (EV_P_ ev_check *w)
2132	{	3591	{
2133	if (expect_false (ev_is_active (w)))	3592	if (expect_false (ev_is_active (w)))
2134	return;	3593	return;
		3594
		3595	EV_FREQUENT_CHECK;
2135		3596
2136	ev_start (EV_A_ (W)w, ++checkcnt);	3597	ev_start (EV_A_ (W)w, ++checkcnt);
2137	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3598	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2138	checks [checkcnt - 1] = w;	3599	checks [checkcnt - 1] = w;
		3600
		3601	EV_FREQUENT_CHECK;
2139	}	3602	}
2140		3603
2141	void	3604	void
2142	ev_check_stop (EV_P_ ev_check *w)	3605	ev_check_stop (EV_P_ ev_check *w)
2143	{	3606	{
2144	clear_pending (EV_A_ (W)w);	3607	clear_pending (EV_A_ (W)w);
2145	if (expect_false (!ev_is_active (w)))	3608	if (expect_false (!ev_is_active (w)))
2146	return;	3609	return;
2147		3610
		3611	EV_FREQUENT_CHECK;
		3612
2148	{	3613	{
2149	int active = ((W)w)->active;	3614	int active = ev_active (w);
		3615
2150	checks [active - 1] = checks [--checkcnt];	3616	checks [active - 1] = checks [--checkcnt];
2151	((W)checks [active - 1])->active = active;	3617	ev_active (checks [active - 1]) = active;
2152	}	3618	}
2153		3619
2154	ev_stop (EV_A_ (W)w);	3620	ev_stop (EV_A_ (W)w);
		3621
		3622	EV_FREQUENT_CHECK;
2155	}	3623	}
		3624	#endif
2156		3625
2157	#if EV_EMBED_ENABLE	3626	#if EV_EMBED_ENABLE
2158	void noinline	3627	void noinline
2159	ev_embed_sweep (EV_P_ ev_embed *w)	3628	ev_embed_sweep (EV_P_ ev_embed *w)
2160	{	3629	{
2161	ev_loop (w->loop, EVLOOP_NONBLOCK);	3630	ev_run (w->other, EVRUN_NOWAIT);
2162	}	3631	}
2163		3632
2164	static void	3633	static void
2165	embed_cb (EV_P_ ev_io *io, int revents)	3634	embed_io_cb (EV_P_ ev_io *io, int revents)
2166	{	3635	{
2167	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3636	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2168		3637
2169	if (ev_cb (w))	3638	if (ev_cb (w))
2170	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3639	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2171	else	3640	else
2172	ev_embed_sweep (loop, w);	3641	ev_run (w->other, EVRUN_NOWAIT);
2173	}	3642	}
		3643
		3644	static void
		3645	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		3646	{
		3647	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		3648
		3649	{
		3650	EV_P = w->other;
		3651
		3652	while (fdchangecnt)
		3653	{
		3654	fd_reify (EV_A);
		3655	ev_run (EV_A_ EVRUN_NOWAIT);
		3656	}
		3657	}
		3658	}
		3659
		3660	static void
		3661	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3662	{
		3663	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3664
		3665	ev_embed_stop (EV_A_ w);
		3666
		3667	{
		3668	EV_P = w->other;
		3669
		3670	ev_loop_fork (EV_A);
		3671	ev_run (EV_A_ EVRUN_NOWAIT);
		3672	}
		3673
		3674	ev_embed_start (EV_A_ w);
		3675	}
		3676
		3677	#if 0
		3678	static void
		3679	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		3680	{
		3681	ev_idle_stop (EV_A_ idle);
		3682	}
		3683	#endif
2174		3684
2175	void	3685	void
2176	ev_embed_start (EV_P_ ev_embed *w)	3686	ev_embed_start (EV_P_ ev_embed *w)
2177	{	3687	{
2178	if (expect_false (ev_is_active (w)))	3688	if (expect_false (ev_is_active (w)))
2179	return;	3689	return;
2180		3690
2181	{	3691	{
2182	struct ev_loop *loop = w->loop;	3692	EV_P = w->other;
2183	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3693	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2184	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);	3694	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2185	}	3695	}
		3696
		3697	EV_FREQUENT_CHECK;
2186		3698
2187	ev_set_priority (&w->io, ev_priority (w));	3699	ev_set_priority (&w->io, ev_priority (w));
2188	ev_io_start (EV_A_ &w->io);	3700	ev_io_start (EV_A_ &w->io);
2189		3701
		3702	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3703	ev_set_priority (&w->prepare, EV_MINPRI);
		3704	ev_prepare_start (EV_A_ &w->prepare);
		3705
		3706	ev_fork_init (&w->fork, embed_fork_cb);
		3707	ev_fork_start (EV_A_ &w->fork);
		3708
		3709	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3710
2190	ev_start (EV_A_ (W)w, 1);	3711	ev_start (EV_A_ (W)w, 1);
		3712
		3713	EV_FREQUENT_CHECK;
2191	}	3714	}
2192		3715
2193	void	3716	void
2194	ev_embed_stop (EV_P_ ev_embed *w)	3717	ev_embed_stop (EV_P_ ev_embed *w)
2195	{	3718	{
2196	clear_pending (EV_A_ (W)w);	3719	clear_pending (EV_A_ (W)w);
2197	if (expect_false (!ev_is_active (w)))	3720	if (expect_false (!ev_is_active (w)))
2198	return;	3721	return;
2199		3722
		3723	EV_FREQUENT_CHECK;
		3724
2200	ev_io_stop (EV_A_ &w->io);	3725	ev_io_stop (EV_A_ &w->io);
		3726	ev_prepare_stop (EV_A_ &w->prepare);
		3727	ev_fork_stop (EV_A_ &w->fork);
2201		3728
2202	ev_stop (EV_A_ (W)w);	3729	ev_stop (EV_A_ (W)w);
		3730
		3731	EV_FREQUENT_CHECK;
2203	}	3732	}
2204	#endif	3733	#endif
2205		3734
2206	#if EV_FORK_ENABLE	3735	#if EV_FORK_ENABLE
2207	void	3736	void
2208	ev_fork_start (EV_P_ ev_fork *w)	3737	ev_fork_start (EV_P_ ev_fork *w)
2209	{	3738	{
2210	if (expect_false (ev_is_active (w)))	3739	if (expect_false (ev_is_active (w)))
2211	return;	3740	return;
2212		3741
		3742	EV_FREQUENT_CHECK;
		3743
2213	ev_start (EV_A_ (W)w, ++forkcnt);	3744	ev_start (EV_A_ (W)w, ++forkcnt);
2214	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3745	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2215	forks [forkcnt - 1] = w;	3746	forks [forkcnt - 1] = w;
		3747
		3748	EV_FREQUENT_CHECK;
2216	}	3749	}
2217		3750
2218	void	3751	void
2219	ev_fork_stop (EV_P_ ev_fork *w)	3752	ev_fork_stop (EV_P_ ev_fork *w)
2220	{	3753	{
2221	clear_pending (EV_A_ (W)w);	3754	clear_pending (EV_A_ (W)w);
2222	if (expect_false (!ev_is_active (w)))	3755	if (expect_false (!ev_is_active (w)))
2223	return;	3756	return;
2224		3757
		3758	EV_FREQUENT_CHECK;
		3759
2225	{	3760	{
2226	int active = ((W)w)->active;	3761	int active = ev_active (w);
		3762
2227	forks [active - 1] = forks [--forkcnt];	3763	forks [active - 1] = forks [--forkcnt];
2228	((W)forks [active - 1])->active = active;	3764	ev_active (forks [active - 1]) = active;
2229	}	3765	}
2230		3766
2231	ev_stop (EV_A_ (W)w);	3767	ev_stop (EV_A_ (W)w);
		3768
		3769	EV_FREQUENT_CHECK;
		3770	}
		3771	#endif
		3772
		3773	#if EV_CLEANUP_ENABLE
		3774	void
		3775	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3776	{
		3777	if (expect_false (ev_is_active (w)))
		3778	return;
		3779
		3780	EV_FREQUENT_CHECK;
		3781
		3782	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3783	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3784	cleanups [cleanupcnt - 1] = w;
		3785
		3786	/* cleanup watchers should never keep a refcount on the loop */
		3787	ev_unref (EV_A);
		3788	EV_FREQUENT_CHECK;
		3789	}
		3790
		3791	void
		3792	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3793	{
		3794	clear_pending (EV_A_ (W)w);
		3795	if (expect_false (!ev_is_active (w)))
		3796	return;
		3797
		3798	EV_FREQUENT_CHECK;
		3799	ev_ref (EV_A);
		3800
		3801	{
		3802	int active = ev_active (w);
		3803
		3804	cleanups [active - 1] = cleanups [--cleanupcnt];
		3805	ev_active (cleanups [active - 1]) = active;
		3806	}
		3807
		3808	ev_stop (EV_A_ (W)w);
		3809
		3810	EV_FREQUENT_CHECK;
		3811	}
		3812	#endif
		3813
		3814	#if EV_ASYNC_ENABLE
		3815	void
		3816	ev_async_start (EV_P_ ev_async *w)
		3817	{
		3818	if (expect_false (ev_is_active (w)))
		3819	return;
		3820
		3821	w->sent = 0;
		3822
		3823	evpipe_init (EV_A);
		3824
		3825	EV_FREQUENT_CHECK;
		3826
		3827	ev_start (EV_A_ (W)w, ++asynccnt);
		3828	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3829	asyncs [asynccnt - 1] = w;
		3830
		3831	EV_FREQUENT_CHECK;
		3832	}
		3833
		3834	void
		3835	ev_async_stop (EV_P_ ev_async *w)
		3836	{
		3837	clear_pending (EV_A_ (W)w);
		3838	if (expect_false (!ev_is_active (w)))
		3839	return;
		3840
		3841	EV_FREQUENT_CHECK;
		3842
		3843	{
		3844	int active = ev_active (w);
		3845
		3846	asyncs [active - 1] = asyncs [--asynccnt];
		3847	ev_active (asyncs [active - 1]) = active;
		3848	}
		3849
		3850	ev_stop (EV_A_ (W)w);
		3851
		3852	EV_FREQUENT_CHECK;
		3853	}
		3854
		3855	void
		3856	ev_async_send (EV_P_ ev_async *w)
		3857	{
		3858	w->sent = 1;
		3859	evpipe_write (EV_A_ &async_pending);
2232	}	3860	}
2233	#endif	3861	#endif
2234		3862
2235	/*****************************************************************************/	3863	/*****************************************************************************/
2236		3864
…		…
2246	once_cb (EV_P_ struct ev_once *once, int revents)	3874	once_cb (EV_P_ struct ev_once *once, int revents)
2247	{	3875	{
2248	void (*cb)(int revents, void *arg) = once->cb;	3876	void (*cb)(int revents, void *arg) = once->cb;
2249	void *arg = once->arg;	3877	void *arg = once->arg;
2250		3878
2251	ev_io_stop (EV_A_ &once->io);	3879	ev_io_stop (EV_A_ &once->io);
2252	ev_timer_stop (EV_A_ &once->to);	3880	ev_timer_stop (EV_A_ &once->to);
2253	ev_free (once);	3881	ev_free (once);
2254		3882
2255	cb (revents, arg);	3883	cb (revents, arg);
2256	}	3884	}
2257		3885
2258	static void	3886	static void
2259	once_cb_io (EV_P_ ev_io *w, int revents)	3887	once_cb_io (EV_P_ ev_io *w, int revents)
2260	{	3888	{
2261	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3889	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3890
		3891	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2262	}	3892	}
2263		3893
2264	static void	3894	static void
2265	once_cb_to (EV_P_ ev_timer *w, int revents)	3895	once_cb_to (EV_P_ ev_timer *w, int revents)
2266	{	3896	{
2267	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3897	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3898
		3899	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2268	}	3900	}
2269		3901
2270	void	3902	void
2271	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3903	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2272	{	3904	{
2273	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3905	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2274		3906
2275	if (expect_false (!once))	3907	if (expect_false (!once))
2276	{	3908	{
2277	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3909	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2278	return;	3910	return;
2279	}	3911	}
2280		3912
2281	once->cb = cb;	3913	once->cb = cb;
2282	once->arg = arg;	3914	once->arg = arg;
…		…
2294	ev_timer_set (&once->to, timeout, 0.);	3926	ev_timer_set (&once->to, timeout, 0.);
2295	ev_timer_start (EV_A_ &once->to);	3927	ev_timer_start (EV_A_ &once->to);
2296	}	3928	}
2297	}	3929	}
2298		3930
2299	#ifdef __cplusplus	3931	/*****************************************************************************/
2300	}	3932
		3933	#if EV_WALK_ENABLE
		3934	void ecb_cold
		3935	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3936	{
		3937	int i, j;
		3938	ev_watcher_list *wl, *wn;
		3939
		3940	if (types & (EV_IO | EV_EMBED))
		3941	for (i = 0; i < anfdmax; ++i)
		3942	for (wl = anfds [i].head; wl; )
		3943	{
		3944	wn = wl->next;
		3945
		3946	#if EV_EMBED_ENABLE
		3947	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3948	{
		3949	if (types & EV_EMBED)
		3950	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3951	}
		3952	else
		3953	#endif
		3954	#if EV_USE_INOTIFY
		3955	if (ev_cb ((ev_io *)wl) == infy_cb)
		3956	;
		3957	else
		3958	#endif
		3959	if ((ev_io *)wl != &pipe_w)
		3960	if (types & EV_IO)
		3961	cb (EV_A_ EV_IO, wl);
		3962
		3963	wl = wn;
		3964	}
		3965
		3966	if (types & (EV_TIMER | EV_STAT))
		3967	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3968	#if EV_STAT_ENABLE
		3969	/*TODO: timer is not always active*/
		3970	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		3971	{
		3972	if (types & EV_STAT)
		3973	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		3974	}
		3975	else
		3976	#endif
		3977	if (types & EV_TIMER)
		3978	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		3979
		3980	#if EV_PERIODIC_ENABLE
		3981	if (types & EV_PERIODIC)
		3982	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3983	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3984	#endif
		3985
		3986	#if EV_IDLE_ENABLE
		3987	if (types & EV_IDLE)
		3988	for (j = NUMPRI; i--; )
		3989	for (i = idlecnt [j]; i--; )
		3990	cb (EV_A_ EV_IDLE, idles [j][i]);
		3991	#endif
		3992
		3993	#if EV_FORK_ENABLE
		3994	if (types & EV_FORK)
		3995	for (i = forkcnt; i--; )
		3996	if (ev_cb (forks [i]) != embed_fork_cb)
		3997	cb (EV_A_ EV_FORK, forks [i]);
		3998	#endif
		3999
		4000	#if EV_ASYNC_ENABLE
		4001	if (types & EV_ASYNC)
		4002	for (i = asynccnt; i--; )
		4003	cb (EV_A_ EV_ASYNC, asyncs [i]);
		4004	#endif
		4005
		4006	#if EV_PREPARE_ENABLE
		4007	if (types & EV_PREPARE)
		4008	for (i = preparecnt; i--; )
		4009	# if EV_EMBED_ENABLE
		4010	if (ev_cb (prepares [i]) != embed_prepare_cb)
2301	#endif	4011	# endif
		4012	cb (EV_A_ EV_PREPARE, prepares [i]);
		4013	#endif
2302		4014
		4015	#if EV_CHECK_ENABLE
		4016	if (types & EV_CHECK)
		4017	for (i = checkcnt; i--; )
		4018	cb (EV_A_ EV_CHECK, checks [i]);
		4019	#endif
		4020
		4021	#if EV_SIGNAL_ENABLE
		4022	if (types & EV_SIGNAL)
		4023	for (i = 0; i < EV_NSIG - 1; ++i)
		4024	for (wl = signals [i].head; wl; )
		4025	{
		4026	wn = wl->next;
		4027	cb (EV_A_ EV_SIGNAL, wl);
		4028	wl = wn;
		4029	}
		4030	#endif
		4031
		4032	#if EV_CHILD_ENABLE
		4033	if (types & EV_CHILD)
		4034	for (i = (EV_PID_HASHSIZE); i--; )
		4035	for (wl = childs [i]; wl; )
		4036	{
		4037	wn = wl->next;
		4038	cb (EV_A_ EV_CHILD, wl);
		4039	wl = wn;
		4040	}
		4041	#endif
		4042	/* EV_STAT 0x00001000 /* stat data changed */
		4043	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		4044	}
		4045	#endif
		4046
		4047	#if EV_MULTIPLICITY
		4048	#include "ev_wrap.h"
		4049	#endif
		4050
		4051	EV_CPP(})
		4052

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