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Comparing libev/ev.c (file contents):
Revision 1.210 by root, Sat Feb 9 00:34:11 2008 UTC vs.
Revision 1.483 by root, Tue Jul 31 04:45:58 2018 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012,2013 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus	40	/* this big block deduces configuration from config.h */
41	extern "C" {
42	#endif
43
44	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
45	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
46	# include EV_CONFIG_H	43	# include EV_CONFIG_H
47	# else	44	# else
48	# include "config.h"	45	# include "config.h"
49	# endif	46	# endif
50		47
		48	# if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	# endif
		53
		54	# if HAVE_CLOCK_SYSCALL
		55	# ifndef EV_USE_CLOCK_SYSCALL
		56	# define EV_USE_CLOCK_SYSCALL 1
		57	# ifndef EV_USE_REALTIME
		58	# define EV_USE_REALTIME 0
		59	# endif
		60	# ifndef EV_USE_MONOTONIC
		61	# define EV_USE_MONOTONIC 1
		62	# endif
		63	# endif
		64	# elif !defined EV_USE_CLOCK_SYSCALL
		65	# define EV_USE_CLOCK_SYSCALL 0
		66	# endif
		67
51	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
52	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
53	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
54	# endif	71	# endif
55	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
56	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
57	# endif	74	# endif
58	# else	75	# else
59	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
60	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
61	# endif	78	# endif
62	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
63	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
64	# endif	81	# endif
65	# endif	82	# endif
66		83
		84	# if HAVE_NANOSLEEP
67	# ifndef EV_USE_NANOSLEEP	85	# ifndef EV_USE_NANOSLEEP
68	# if HAVE_NANOSLEEP
69	# define EV_USE_NANOSLEEP 1	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		87	# endif
70	# else	88	# else
		89	# undef EV_USE_NANOSLEEP
71	# define EV_USE_NANOSLEEP 0	90	# define EV_USE_NANOSLEEP 0
		91	# endif
		92
		93	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		94	# ifndef EV_USE_SELECT
		95	# define EV_USE_SELECT EV_FEATURE_BACKENDS
72	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
73	# endif	100	# endif
74		101
		102	# if HAVE_POLL && HAVE_POLL_H
75	# ifndef EV_USE_SELECT	103	# ifndef EV_USE_POLL
76	# if HAVE_SELECT && HAVE_SYS_SELECT_H	104	# define EV_USE_POLL EV_FEATURE_BACKENDS
77	# define EV_USE_SELECT 1
78	# else
79	# define EV_USE_SELECT 0
80	# endif	105	# endif
81	# endif
82
83	# ifndef EV_USE_POLL
84	# if HAVE_POLL && HAVE_POLL_H
85	# define EV_USE_POLL 1
86	# else	106	# else
		107	# undef EV_USE_POLL
87	# define EV_USE_POLL 0	108	# define EV_USE_POLL 0
88	# endif
89	# endif	109	# endif
90		110
91	# ifndef EV_USE_EPOLL
92	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
94	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95	# define EV_USE_EPOLL 0
96	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
97	# endif	118	# endif
98		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
100	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101	# define EV_USE_KQUEUE 1
102	# else
103	# define EV_USE_KQUEUE 0
104	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
105	# endif	127	# endif
106		128
107	# ifndef EV_USE_PORT
108	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
109	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
110	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
111	# define EV_USE_PORT 0
112	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
113	# endif	136	# endif
114		137
115	# ifndef EV_USE_INOTIFY
116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
118	# else
119	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
120	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
121	# endif	145	# endif
122		146
		147	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		148	# ifndef EV_USE_SIGNALFD
		149	# define EV_USE_SIGNALFD EV_FEATURE_OS
		150	# endif
		151	# else
		152	# undef EV_USE_SIGNALFD
		153	# define EV_USE_SIGNALFD 0
123	#endif	154	# endif
124		155
125	#include <math.h>	156	# if HAVE_EVENTFD
		157	# ifndef EV_USE_EVENTFD
		158	# define EV_USE_EVENTFD EV_FEATURE_OS
		159	# endif
		160	# else
		161	# undef EV_USE_EVENTFD
		162	# define EV_USE_EVENTFD 0
		163	# endif
		164
		165	#endif
		166
		167	/* OS X, in its infinite idiocy, actually HARDCODES
		168	* a limit of 1024 into their select. Where people have brains,
		169	* OS X engineers apparently have a vacuum. Or maybe they were
		170	* ordered to have a vacuum, or they do anything for money.
		171	* This might help. Or not.
		172	* Note that this must be defined early, as other include files
		173	* will rely on this define as well.
		174	*/
		175	#define _DARWIN_UNLIMITED_SELECT 1
		176
126	#include <stdlib.h>	177	#include <stdlib.h>
		178	#include <string.h>
127	#include <fcntl.h>	179	#include <fcntl.h>
128	#include <stddef.h>	180	#include <stddef.h>
129		181
130	#include <stdio.h>	182	#include <stdio.h>
131		183
132	#include <assert.h>	184	#include <assert.h>
133	#include <errno.h>	185	#include <errno.h>
134	#include <sys/types.h>	186	#include <sys/types.h>
135	#include <time.h>	187	#include <time.h>
		188	#include <limits.h>
136		189
137	#include <signal.h>	190	#include <signal.h>
138		191
139	#ifdef EV_H	192	#ifdef EV_H
140	# include EV_H	193	# include EV_H
141	#else	194	#else
142	# include "ev.h"	195	# include "ev.h"
		196	#endif
		197
		198	#if EV_NO_THREADS
		199	# undef EV_NO_SMP
		200	# define EV_NO_SMP 1
		201	# undef ECB_NO_THREADS
		202	# define ECB_NO_THREADS 1
		203	#endif
		204	#if EV_NO_SMP
		205	# undef EV_NO_SMP
		206	# define ECB_NO_SMP 1
143	#endif	207	#endif
144		208
145	#ifndef _WIN32	209	#ifndef _WIN32
146	# include <sys/time.h>	210	# include <sys/time.h>
147	# include <sys/wait.h>	211	# include <sys/wait.h>
148	# include <unistd.h>	212	# include <unistd.h>
149	#else	213	#else
		214	# include <io.h>
150	# define WIN32_LEAN_AND_MEAN	215	# define WIN32_LEAN_AND_MEAN
		216	# include <winsock2.h>
151	# include <windows.h>	217	# include <windows.h>
152	# ifndef EV_SELECT_IS_WINSOCKET	218	# ifndef EV_SELECT_IS_WINSOCKET
153	# define EV_SELECT_IS_WINSOCKET 1	219	# define EV_SELECT_IS_WINSOCKET 1
154	# endif	220	# endif
		221	# undef EV_AVOID_STDIO
		222	#endif
		223
		224	/* this block tries to deduce configuration from header-defined symbols and defaults */
		225
		226	/* try to deduce the maximum number of signals on this platform */
		227	#if defined EV_NSIG
		228	/* use what's provided */
		229	#elif defined NSIG
		230	# define EV_NSIG (NSIG)
		231	#elif defined _NSIG
		232	# define EV_NSIG (_NSIG)
		233	#elif defined SIGMAX
		234	# define EV_NSIG (SIGMAX+1)
		235	#elif defined SIG_MAX
		236	# define EV_NSIG (SIG_MAX+1)
		237	#elif defined _SIG_MAX
		238	# define EV_NSIG (_SIG_MAX+1)
		239	#elif defined MAXSIG
		240	# define EV_NSIG (MAXSIG+1)
		241	#elif defined MAX_SIG
		242	# define EV_NSIG (MAX_SIG+1)
		243	#elif defined SIGARRAYSIZE
		244	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		245	#elif defined _sys_nsig
		246	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		247	#else
		248	# define EV_NSIG (8 * sizeof (sigset_t) + 1)
		249	#endif
		250
		251	#ifndef EV_USE_FLOOR
		252	# define EV_USE_FLOOR 0
		253	#endif
		254
		255	#ifndef EV_USE_CLOCK_SYSCALL
		256	# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
		257	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
		258	# else
		259	# define EV_USE_CLOCK_SYSCALL 0
155	#endif	260	# endif
		261	#endif
156		262
157	/**/	263	#if !(_POSIX_TIMERS > 0)
		264	# ifndef EV_USE_MONOTONIC
		265	# define EV_USE_MONOTONIC 0
		266	# endif
		267	# ifndef EV_USE_REALTIME
		268	# define EV_USE_REALTIME 0
		269	# endif
		270	#endif
158		271
159	#ifndef EV_USE_MONOTONIC	272	#ifndef EV_USE_MONOTONIC
		273	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
		274	# define EV_USE_MONOTONIC EV_FEATURE_OS
		275	# else
160	# define EV_USE_MONOTONIC 0	276	# define EV_USE_MONOTONIC 0
		277	# endif
161	#endif	278	#endif
162		279
163	#ifndef EV_USE_REALTIME	280	#ifndef EV_USE_REALTIME
164	# define EV_USE_REALTIME 0	281	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165	#endif	282	#endif
166		283
167	#ifndef EV_USE_NANOSLEEP	284	#ifndef EV_USE_NANOSLEEP
		285	# if _POSIX_C_SOURCE >= 199309L
		286	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		287	# else
168	# define EV_USE_NANOSLEEP 0	288	# define EV_USE_NANOSLEEP 0
		289	# endif
169	#endif	290	#endif
170		291
171	#ifndef EV_USE_SELECT	292	#ifndef EV_USE_SELECT
172	# define EV_USE_SELECT 1	293	# define EV_USE_SELECT EV_FEATURE_BACKENDS
173	#endif	294	#endif
174		295
175	#ifndef EV_USE_POLL	296	#ifndef EV_USE_POLL
176	# ifdef _WIN32	297	# ifdef _WIN32
177	# define EV_USE_POLL 0	298	# define EV_USE_POLL 0
178	# else	299	# else
179	# define EV_USE_POLL 1	300	# define EV_USE_POLL EV_FEATURE_BACKENDS
180	# endif	301	# endif
181	#endif	302	#endif
182		303
183	#ifndef EV_USE_EPOLL	304	#ifndef EV_USE_EPOLL
		305	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		306	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
		307	# else
184	# define EV_USE_EPOLL 0	308	# define EV_USE_EPOLL 0
		309	# endif
185	#endif	310	#endif
186		311
187	#ifndef EV_USE_KQUEUE	312	#ifndef EV_USE_KQUEUE
188	# define EV_USE_KQUEUE 0	313	# define EV_USE_KQUEUE 0
189	#endif	314	#endif
…		…
191	#ifndef EV_USE_PORT	316	#ifndef EV_USE_PORT
192	# define EV_USE_PORT 0	317	# define EV_USE_PORT 0
193	#endif	318	#endif
194		319
195	#ifndef EV_USE_INOTIFY	320	#ifndef EV_USE_INOTIFY
		321	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		322	# define EV_USE_INOTIFY EV_FEATURE_OS
		323	# else
196	# define EV_USE_INOTIFY 0	324	# define EV_USE_INOTIFY 0
		325	# endif
197	#endif	326	#endif
198		327
199	#ifndef EV_PID_HASHSIZE	328	#ifndef EV_PID_HASHSIZE
200	# if EV_MINIMAL	329	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201	# define EV_PID_HASHSIZE 1	330	#endif
		331
		332	#ifndef EV_INOTIFY_HASHSIZE
		333	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
		334	#endif
		335
		336	#ifndef EV_USE_EVENTFD
		337	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		338	# define EV_USE_EVENTFD EV_FEATURE_OS
202	# else	339	# else
203	# define EV_PID_HASHSIZE 16	340	# define EV_USE_EVENTFD 0
204	# endif	341	# endif
205	#endif	342	#endif
206		343
207	#ifndef EV_INOTIFY_HASHSIZE	344	#ifndef EV_USE_SIGNALFD
208	# if EV_MINIMAL	345	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209	# define EV_INOTIFY_HASHSIZE 1	346	# define EV_USE_SIGNALFD EV_FEATURE_OS
210	# else	347	# else
211	# define EV_INOTIFY_HASHSIZE 16	348	# define EV_USE_SIGNALFD 0
212	# endif	349	# endif
213	#endif	350	#endif
214		351
215	/**/	352	#if 0 /* debugging */
		353	# define EV_VERIFY 3
		354	# define EV_USE_4HEAP 1
		355	# define EV_HEAP_CACHE_AT 1
		356	#endif
		357
		358	#ifndef EV_VERIFY
		359	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		360	#endif
		361
		362	#ifndef EV_USE_4HEAP
		363	# define EV_USE_4HEAP EV_FEATURE_DATA
		364	#endif
		365
		366	#ifndef EV_HEAP_CACHE_AT
		367	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		368	#endif
		369
		370	#ifdef __ANDROID__
		371	/* supposedly, android doesn't typedef fd_mask */
		372	# undef EV_USE_SELECT
		373	# define EV_USE_SELECT 0
		374	/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
		375	# undef EV_USE_CLOCK_SYSCALL
		376	# define EV_USE_CLOCK_SYSCALL 0
		377	#endif
		378
		379	/* aix's poll.h seems to cause lots of trouble */
		380	#ifdef _AIX
		381	/* AIX has a completely broken poll.h header */
		382	# undef EV_USE_POLL
		383	# define EV_USE_POLL 0
		384	#endif
		385
		386	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		387	/* which makes programs even slower. might work on other unices, too. */
		388	#if EV_USE_CLOCK_SYSCALL
		389	# include <sys/syscall.h>
		390	# ifdef SYS_clock_gettime
		391	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		392	# undef EV_USE_MONOTONIC
		393	# define EV_USE_MONOTONIC 1
		394	# else
		395	# undef EV_USE_CLOCK_SYSCALL
		396	# define EV_USE_CLOCK_SYSCALL 0
		397	# endif
		398	#endif
		399
		400	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
216		401
217	#ifndef CLOCK_MONOTONIC	402	#ifndef CLOCK_MONOTONIC
218	# undef EV_USE_MONOTONIC	403	# undef EV_USE_MONOTONIC
219	# define EV_USE_MONOTONIC 0	404	# define EV_USE_MONOTONIC 0
220	#endif	405	#endif
…		…
228	# undef EV_USE_INOTIFY	413	# undef EV_USE_INOTIFY
229	# define EV_USE_INOTIFY 0	414	# define EV_USE_INOTIFY 0
230	#endif	415	#endif
231		416
232	#if !EV_USE_NANOSLEEP	417	#if !EV_USE_NANOSLEEP
233	# ifndef _WIN32	418	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		419	# if !defined _WIN32 && !defined __hpux
234	# include <sys/select.h>	420	# include <sys/select.h>
235	# endif	421	# endif
236	#endif	422	#endif
237		423
238	#if EV_USE_INOTIFY	424	#if EV_USE_INOTIFY
		425	# include <sys/statfs.h>
239	# include <sys/inotify.h>	426	# include <sys/inotify.h>
		427	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		428	# ifndef IN_DONT_FOLLOW
		429	# undef EV_USE_INOTIFY
		430	# define EV_USE_INOTIFY 0
240	#endif	431	# endif
		432	#endif
241		433
242	#if EV_SELECT_IS_WINSOCKET	434	#if EV_USE_EVENTFD
		435	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
243	# include <winsock.h>	436	# include <stdint.h>
		437	# ifndef EFD_NONBLOCK
		438	# define EFD_NONBLOCK O_NONBLOCK
		439	# endif
		440	# ifndef EFD_CLOEXEC
		441	# ifdef O_CLOEXEC
		442	# define EFD_CLOEXEC O_CLOEXEC
		443	# else
		444	# define EFD_CLOEXEC 02000000
		445	# endif
		446	# endif
		447	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
		448	#endif
		449
		450	#if EV_USE_SIGNALFD
		451	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		452	# include <stdint.h>
		453	# ifndef SFD_NONBLOCK
		454	# define SFD_NONBLOCK O_NONBLOCK
		455	# endif
		456	# ifndef SFD_CLOEXEC
		457	# ifdef O_CLOEXEC
		458	# define SFD_CLOEXEC O_CLOEXEC
		459	# else
		460	# define SFD_CLOEXEC 02000000
		461	# endif
		462	# endif
		463	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
		464
		465	struct signalfd_siginfo
		466	{
		467	uint32_t ssi_signo;
		468	char pad[128 - sizeof (uint32_t)];
		469	};
244	#endif	470	#endif
245		471
246	/**/	472	/**/
247		473
		474	#if EV_VERIFY >= 3
		475	# define EV_FREQUENT_CHECK ev_verify (EV_A)
		476	#else
		477	# define EV_FREQUENT_CHECK do { } while (0)
		478	#endif
		479
248	/*	480	/*
249	* This is used to avoid floating point rounding problems.	481	* This is used to work around floating point rounding problems.
250	* It is added to ev_rt_now when scheduling periodics
251	* to ensure progress, time-wise, even when rounding
252	* errors are against us.
253	* This value is good at least till the year 4000.	482	* This value is good at least till the year 4000.
254	* Better solutions welcome.
255	*/	483	*/
256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	484	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		485	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
257		486
258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	487	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	488	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261		489
		490	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
		491	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
		492
		493	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
		494	/* ECB.H BEGIN */
		495	/*
		496	* libecb - http://software.schmorp.de/pkg/libecb
		497	*
		498	* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
		499	* Copyright (©) 2011 Emanuele Giaquinta
		500	* All rights reserved.
		501	*
		502	* Redistribution and use in source and binary forms, with or without modifica-
		503	* tion, are permitted provided that the following conditions are met:
		504	*
		505	* 1. Redistributions of source code must retain the above copyright notice,
		506	* this list of conditions and the following disclaimer.
		507	*
		508	* 2. Redistributions in binary form must reproduce the above copyright
		509	* notice, this list of conditions and the following disclaimer in the
		510	* documentation and/or other materials provided with the distribution.
		511	*
		512	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		513	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		514	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		515	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		516	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		517	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		518	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		519	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		520	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		521	* OF THE POSSIBILITY OF SUCH DAMAGE.
		522	*
		523	* Alternatively, the contents of this file may be used under the terms of
		524	* the GNU General Public License ("GPL") version 2 or any later version,
		525	* in which case the provisions of the GPL are applicable instead of
		526	* the above. If you wish to allow the use of your version of this file
		527	* only under the terms of the GPL and not to allow others to use your
		528	* version of this file under the BSD license, indicate your decision
		529	* by deleting the provisions above and replace them with the notice
		530	* and other provisions required by the GPL. If you do not delete the
		531	* provisions above, a recipient may use your version of this file under
		532	* either the BSD or the GPL.
		533	*/
		534
		535	#ifndef ECB_H
		536	#define ECB_H
		537
		538	/* 16 bits major, 16 bits minor */
		539	#define ECB_VERSION 0x00010005
		540
		541	#ifdef _WIN32
		542	typedef signed char int8_t;
		543	typedef unsigned char uint8_t;
		544	typedef signed short int16_t;
		545	typedef unsigned short uint16_t;
		546	typedef signed int int32_t;
		547	typedef unsigned int uint32_t;
262	#if __GNUC__ >= 4	548	#if __GNUC__
		549	typedef signed long long int64_t;
		550	typedef unsigned long long uint64_t;
		551	#else /* _MSC_VER || __BORLANDC__ */
		552	typedef signed __int64 int64_t;
		553	typedef unsigned __int64 uint64_t;
		554	#endif
		555	#ifdef _WIN64
		556	#define ECB_PTRSIZE 8
		557	typedef uint64_t uintptr_t;
		558	typedef int64_t intptr_t;
		559	#else
		560	#define ECB_PTRSIZE 4
		561	typedef uint32_t uintptr_t;
		562	typedef int32_t intptr_t;
		563	#endif
		564	#else
		565	#include <inttypes.h>
		566	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
		567	#define ECB_PTRSIZE 8
		568	#else
		569	#define ECB_PTRSIZE 4
		570	#endif
		571	#endif
		572
		573	#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
		574	#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
		575
		576	/* work around x32 idiocy by defining proper macros */
		577	#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
		578	#if _ILP32
		579	#define ECB_AMD64_X32 1
		580	#else
		581	#define ECB_AMD64 1
		582	#endif
		583	#endif
		584
		585	/* many compilers define _GNUC_ to some versions but then only implement
		586	* what their idiot authors think are the "more important" extensions,
		587	* causing enormous grief in return for some better fake benchmark numbers.
		588	* or so.
		589	* we try to detect these and simply assume they are not gcc - if they have
		590	* an issue with that they should have done it right in the first place.
		591	*/
		592	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
		593	#define ECB_GCC_VERSION(major,minor) 0
		594	#else
		595	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		596	#endif
		597
		598	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
		599
		600	#if __clang__ && defined __has_builtin
		601	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		602	#else
		603	#define ECB_CLANG_BUILTIN(x) 0
		604	#endif
		605
		606	#if __clang__ && defined __has_extension
		607	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		608	#else
		609	#define ECB_CLANG_EXTENSION(x) 0
		610	#endif
		611
		612	#define ECB_CPP (__cplusplus+0)
		613	#define ECB_CPP11 (__cplusplus >= 201103L)
		614
		615	#if ECB_CPP
		616	#define ECB_C 0
		617	#define ECB_STDC_VERSION 0
		618	#else
		619	#define ECB_C 1
		620	#define ECB_STDC_VERSION __STDC_VERSION__
		621	#endif
		622
		623	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		624	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		625
		626	#if ECB_CPP
		627	#define ECB_EXTERN_C extern "C"
		628	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		629	#define ECB_EXTERN_C_END }
		630	#else
		631	#define ECB_EXTERN_C extern
		632	#define ECB_EXTERN_C_BEG
		633	#define ECB_EXTERN_C_END
		634	#endif
		635
		636	/*****************************************************************************/
		637
		638	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		639	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		640
		641	#if ECB_NO_THREADS
		642	#define ECB_NO_SMP 1
		643	#endif
		644
		645	#if ECB_NO_SMP
		646	#define ECB_MEMORY_FENCE do { } while (0)
		647	#endif
		648
		649	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		650	#if __xlC__ && ECB_CPP
		651	#include <builtins.h>
		652	#endif
		653
		654	#if 1400 <= _MSC_VER
		655	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		656	#endif
		657
		658	#ifndef ECB_MEMORY_FENCE
		659	#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		660	#if __i386 || __i386__
		661	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		662	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		663	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		664	#elif ECB_GCC_AMD64
		665	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		666	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		667	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		668	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		669	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		670	#elif defined __ARM_ARCH_2__ \
		671	|| defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
		672	|| defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
		673	|| defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
		674	|| defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
		675	|| defined __ARM_ARCH_5TEJ__
		676	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
		677	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		678	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
		679	|| defined __ARM_ARCH_6T2__
		680	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		681	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		682	|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
		683	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		684	#elif __aarch64__
		685	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		686	#elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
		687	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
		688	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		689	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		690	#elif defined __s390__ || defined __s390x__
		691	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		692	#elif defined __mips__
		693	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		694	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
		695	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
		696	#elif defined __alpha__
		697	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		698	#elif defined __hppa__
		699	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		700	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		701	#elif defined __ia64__
		702	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		703	#elif defined __m68k__
		704	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		705	#elif defined __m88k__
		706	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		707	#elif defined __sh__
		708	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		709	#endif
		710	#endif
		711	#endif
		712
		713	#ifndef ECB_MEMORY_FENCE
		714	#if ECB_GCC_VERSION(4,7)
		715	/* see comment below (stdatomic.h) about the C11 memory model. */
		716	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		717	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		718	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		719
		720	#elif ECB_CLANG_EXTENSION(c_atomic)
		721	/* see comment below (stdatomic.h) about the C11 memory model. */
		722	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		723	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		724	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		725
		726	#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		727	#define ECB_MEMORY_FENCE __sync_synchronize ()
		728	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		729	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		730	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		731	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		732	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		733	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
		734	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		735	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		736	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		737	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		738	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		739	#elif defined _WIN32
		740	#include <WinNT.h>
		741	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		742	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		743	#include <mbarrier.h>
		744	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		745	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		746	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		747	#elif __xlC__
		748	#define ECB_MEMORY_FENCE __sync ()
		749	#endif
		750	#endif
		751
		752	#ifndef ECB_MEMORY_FENCE
		753	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		754	/* we assume that these memory fences work on all variables/all memory accesses, */
		755	/* not just C11 atomics and atomic accesses */
		756	#include <stdatomic.h>
		757	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		758	/* any fence other than seq_cst, which isn't very efficient for us. */
		759	/* Why that is, we don't know - either the C11 memory model is quite useless */
		760	/* for most usages, or gcc and clang have a bug */
		761	/* I *currently* lean towards the latter, and inefficiently implement */
		762	/* all three of ecb's fences as a seq_cst fence */
		763	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		764	/* for all __atomic_thread_fence's except seq_cst */
		765	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		766	#endif
		767	#endif
		768
		769	#ifndef ECB_MEMORY_FENCE
		770	#if !ECB_AVOID_PTHREADS
		771	/*
		772	* if you get undefined symbol references to pthread_mutex_lock,
		773	* or failure to find pthread.h, then you should implement
		774	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		775	* OR provide pthread.h and link against the posix thread library
		776	* of your system.
		777	*/
		778	#include <pthread.h>
		779	#define ECB_NEEDS_PTHREADS 1
		780	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		781
		782	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		783	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		784	#endif
		785	#endif
		786
		787	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		788	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		789	#endif
		790
		791	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		792	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		793	#endif
		794
		795	/*****************************************************************************/
		796
		797	#if ECB_CPP
		798	#define ecb_inline static inline
		799	#elif ECB_GCC_VERSION(2,5)
		800	#define ecb_inline static __inline__
		801	#elif ECB_C99
		802	#define ecb_inline static inline
		803	#else
		804	#define ecb_inline static
		805	#endif
		806
		807	#if ECB_GCC_VERSION(3,3)
		808	#define ecb_restrict __restrict__
		809	#elif ECB_C99
		810	#define ecb_restrict restrict
		811	#else
		812	#define ecb_restrict
		813	#endif
		814
		815	typedef int ecb_bool;
		816
		817	#define ECB_CONCAT_(a, b) a ## b
		818	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		819	#define ECB_STRINGIFY_(a) # a
		820	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		821	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
		822
		823	#define ecb_function_ ecb_inline
		824
		825	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
		826	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		827	#else
		828	#define ecb_attribute(attrlist)
		829	#endif
		830
		831	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
		832	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		833	#else
		834	/* possible C11 impl for integral types
		835	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		836	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
		837
		838	#define ecb_is_constant(expr) 0
		839	#endif
		840
		841	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
263	# define expect(expr,value) __builtin_expect ((expr),(value))	842	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
264	# define noinline __attribute__ ((noinline))
265	#else	843	#else
266	# define expect(expr,value) (expr)	844	#define ecb_expect(expr,value) (expr)
267	# define noinline
268	# if __STDC_VERSION__ < 199901L
269	# define inline
270	# endif	845	#endif
271	#endif
272		846
		847	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
		848	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		849	#else
		850	#define ecb_prefetch(addr,rw,locality)
		851	#endif
		852
		853	/* no emulation for ecb_decltype */
		854	#if ECB_CPP11
		855	// older implementations might have problems with decltype(x)::type, work around it
		856	template<class T> struct ecb_decltype_t { typedef T type; };
		857	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
		858	#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
		859	#define ecb_decltype(x) __typeof__ (x)
		860	#endif
		861
		862	#if _MSC_VER >= 1300
		863	#define ecb_deprecated __declspec (deprecated)
		864	#else
		865	#define ecb_deprecated ecb_attribute ((__deprecated__))
		866	#endif
		867
		868	#if _MSC_VER >= 1500
		869	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		870	#elif ECB_GCC_VERSION(4,5)
		871	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		872	#else
		873	#define ecb_deprecated_message(msg) ecb_deprecated
		874	#endif
		875
		876	#if _MSC_VER >= 1400
		877	#define ecb_noinline __declspec (noinline)
		878	#else
		879	#define ecb_noinline ecb_attribute ((__noinline__))
		880	#endif
		881
		882	#define ecb_unused ecb_attribute ((__unused__))
		883	#define ecb_const ecb_attribute ((__const__))
		884	#define ecb_pure ecb_attribute ((__pure__))
		885
		886	#if ECB_C11 || __IBMC_NORETURN
		887	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
		888	#define ecb_noreturn _Noreturn
		889	#elif ECB_CPP11
		890	#define ecb_noreturn [[noreturn]]
		891	#elif _MSC_VER >= 1200
		892	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		893	#define ecb_noreturn __declspec (noreturn)
		894	#else
		895	#define ecb_noreturn ecb_attribute ((__noreturn__))
		896	#endif
		897
		898	#if ECB_GCC_VERSION(4,3)
		899	#define ecb_artificial ecb_attribute ((__artificial__))
		900	#define ecb_hot ecb_attribute ((__hot__))
		901	#define ecb_cold ecb_attribute ((__cold__))
		902	#else
		903	#define ecb_artificial
		904	#define ecb_hot
		905	#define ecb_cold
		906	#endif
		907
		908	/* put around conditional expressions if you are very sure that the */
		909	/* expression is mostly true or mostly false. note that these return */
		910	/* booleans, not the expression. */
273	#define expect_false(expr) expect ((expr) != 0, 0)	911	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274	#define expect_true(expr) expect ((expr) != 0, 1)	912	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		913	/* for compatibility to the rest of the world */
		914	#define ecb_likely(expr) ecb_expect_true (expr)
		915	#define ecb_unlikely(expr) ecb_expect_false (expr)
		916
		917	/* count trailing zero bits and count # of one bits */
		918	#if ECB_GCC_VERSION(3,4) \
		919	|| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		920	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		921	&& ECB_CLANG_BUILTIN(__builtin_popcount))
		922	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		923	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		924	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		925	#define ecb_ctz32(x) __builtin_ctz (x)
		926	#define ecb_ctz64(x) __builtin_ctzll (x)
		927	#define ecb_popcount32(x) __builtin_popcount (x)
		928	/* no popcountll */
		929	#else
		930	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
		931	ecb_function_ ecb_const int
		932	ecb_ctz32 (uint32_t x)
		933	{
		934	#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
		935	unsigned long r;
		936	_BitScanForward (&r, x);
		937	return (int)r;
		938	#else
		939	int r = 0;
		940
		941	x &= ~x + 1; /* this isolates the lowest bit */
		942
		943	#if ECB_branchless_on_i386
		944	r += !!(x & 0xaaaaaaaa) << 0;
		945	r += !!(x & 0xcccccccc) << 1;
		946	r += !!(x & 0xf0f0f0f0) << 2;
		947	r += !!(x & 0xff00ff00) << 3;
		948	r += !!(x & 0xffff0000) << 4;
		949	#else
		950	if (x & 0xaaaaaaaa) r += 1;
		951	if (x & 0xcccccccc) r += 2;
		952	if (x & 0xf0f0f0f0) r += 4;
		953	if (x & 0xff00ff00) r += 8;
		954	if (x & 0xffff0000) r += 16;
		955	#endif
		956
		957	return r;
		958	#endif
		959	}
		960
		961	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
		962	ecb_function_ ecb_const int
		963	ecb_ctz64 (uint64_t x)
		964	{
		965	#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
		966	unsigned long r;
		967	_BitScanForward64 (&r, x);
		968	return (int)r;
		969	#else
		970	int shift = x & 0xffffffff ? 0 : 32;
		971	return ecb_ctz32 (x >> shift) + shift;
		972	#endif
		973	}
		974
		975	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
		976	ecb_function_ ecb_const int
		977	ecb_popcount32 (uint32_t x)
		978	{
		979	x -= (x >> 1) & 0x55555555;
		980	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		981	x = ((x >> 4) + x) & 0x0f0f0f0f;
		982	x *= 0x01010101;
		983
		984	return x >> 24;
		985	}
		986
		987	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
		988	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
		989	{
		990	#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
		991	unsigned long r;
		992	_BitScanReverse (&r, x);
		993	return (int)r;
		994	#else
		995	int r = 0;
		996
		997	if (x >> 16) { x >>= 16; r += 16; }
		998	if (x >> 8) { x >>= 8; r += 8; }
		999	if (x >> 4) { x >>= 4; r += 4; }
		1000	if (x >> 2) { x >>= 2; r += 2; }
		1001	if (x >> 1) { r += 1; }
		1002
		1003	return r;
		1004	#endif
		1005	}
		1006
		1007	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
		1008	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
		1009	{
		1010	#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
		1011	unsigned long r;
		1012	_BitScanReverse64 (&r, x);
		1013	return (int)r;
		1014	#else
		1015	int r = 0;
		1016
		1017	if (x >> 32) { x >>= 32; r += 32; }
		1018
		1019	return r + ecb_ld32 (x);
		1020	#endif
		1021	}
		1022	#endif
		1023
		1024	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
		1025	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		1026	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
		1027	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		1028
		1029	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
		1030	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
		1031	{
		1032	return ( (x * 0x0802U & 0x22110U)
		1033	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		1034	}
		1035
		1036	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
		1037	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
		1038	{
		1039	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		1040	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		1041	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		1042	x = ( x >> 8 ) | ( x << 8);
		1043
		1044	return x;
		1045	}
		1046
		1047	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
		1048	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
		1049	{
		1050	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		1051	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		1052	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		1053	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		1054	x = ( x >> 16 ) | ( x << 16);
		1055
		1056	return x;
		1057	}
		1058
		1059	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		1060	/* so for this version we are lazy */
		1061	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
		1062	ecb_function_ ecb_const int
		1063	ecb_popcount64 (uint64_t x)
		1064	{
		1065	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		1066	}
		1067
		1068	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
		1069	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
		1070	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
		1071	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
		1072	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
		1073	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
		1074	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
		1075	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
		1076
		1077	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		1078	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		1079	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		1080	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		1081	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		1082	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		1083	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		1084	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		1085
		1086	#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		1087	#if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
		1088	#define ecb_bswap16(x) __builtin_bswap16 (x)
		1089	#else
		1090	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		1091	#endif
		1092	#define ecb_bswap32(x) __builtin_bswap32 (x)
		1093	#define ecb_bswap64(x) __builtin_bswap64 (x)
		1094	#elif _MSC_VER
		1095	#include <stdlib.h>
		1096	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		1097	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		1098	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
		1099	#else
		1100	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
		1101	ecb_function_ ecb_const uint16_t
		1102	ecb_bswap16 (uint16_t x)
		1103	{
		1104	return ecb_rotl16 (x, 8);
		1105	}
		1106
		1107	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
		1108	ecb_function_ ecb_const uint32_t
		1109	ecb_bswap32 (uint32_t x)
		1110	{
		1111	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		1112	}
		1113
		1114	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
		1115	ecb_function_ ecb_const uint64_t
		1116	ecb_bswap64 (uint64_t x)
		1117	{
		1118	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		1119	}
		1120	#endif
		1121
		1122	#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
		1123	#define ecb_unreachable() __builtin_unreachable ()
		1124	#else
		1125	/* this seems to work fine, but gcc always emits a warning for it :/ */
		1126	ecb_inline ecb_noreturn void ecb_unreachable (void);
		1127	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
		1128	#endif
		1129
		1130	/* try to tell the compiler that some condition is definitely true */
		1131	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
		1132
		1133	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
		1134	ecb_inline ecb_const uint32_t
		1135	ecb_byteorder_helper (void)
		1136	{
		1137	/* the union code still generates code under pressure in gcc, */
		1138	/* but less than using pointers, and always seems to */
		1139	/* successfully return a constant. */
		1140	/* the reason why we have this horrible preprocessor mess */
		1141	/* is to avoid it in all cases, at least on common architectures */
		1142	/* or when using a recent enough gcc version (>= 4.6) */
		1143	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		1144	|| ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
		1145	#define ECB_LITTLE_ENDIAN 1
		1146	return 0x44332211;
		1147	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		1148	|| ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
		1149	#define ECB_BIG_ENDIAN 1
		1150	return 0x11223344;
		1151	#else
		1152	union
		1153	{
		1154	uint8_t c[4];
		1155	uint32_t u;
		1156	} u = { 0x11, 0x22, 0x33, 0x44 };
		1157	return u.u;
		1158	#endif
		1159	}
		1160
		1161	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
		1162	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
		1163	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
		1164	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		1165
		1166	#if ECB_GCC_VERSION(3,0) || ECB_C99
		1167	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		1168	#else
		1169	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		1170	#endif
		1171
		1172	#if ECB_CPP
		1173	template<typename T>
		1174	static inline T ecb_div_rd (T val, T div)
		1175	{
		1176	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		1177	}
		1178	template<typename T>
		1179	static inline T ecb_div_ru (T val, T div)
		1180	{
		1181	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		1182	}
		1183	#else
		1184	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		1185	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		1186	#endif
		1187
		1188	#if ecb_cplusplus_does_not_suck
		1189	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		1190	template<typename T, int N>
		1191	static inline int ecb_array_length (const T (&arr)[N])
		1192	{
		1193	return N;
		1194	}
		1195	#else
		1196	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		1197	#endif
		1198
		1199	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		1200	ecb_function_ ecb_const uint32_t
		1201	ecb_binary16_to_binary32 (uint32_t x)
		1202	{
		1203	unsigned int s = (x & 0x8000) << (31 - 15);
		1204	int e = (x >> 10) & 0x001f;
		1205	unsigned int m = x & 0x03ff;
		1206
		1207	if (ecb_expect_false (e == 31))
		1208	/* infinity or NaN */
		1209	e = 255 - (127 - 15);
		1210	else if (ecb_expect_false (!e))
		1211	{
		1212	if (ecb_expect_true (!m))
		1213	/* zero, handled by code below by forcing e to 0 */
		1214	e = 0 - (127 - 15);
		1215	else
		1216	{
		1217	/* subnormal, renormalise */
		1218	unsigned int s = 10 - ecb_ld32 (m);
		1219
		1220	m = (m << s) & 0x3ff; /* mask implicit bit */
		1221	e -= s - 1;
		1222	}
		1223	}
		1224
		1225	/* e and m now are normalised, or zero, (or inf or nan) */
		1226	e += 127 - 15;
		1227
		1228	return s | (e << 23) | (m << (23 - 10));
		1229	}
		1230
		1231	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		1232	ecb_function_ ecb_const uint16_t
		1233	ecb_binary32_to_binary16 (uint32_t x)
		1234	{
		1235	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		1236	unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		1237	unsigned int m = x & 0x007fffff;
		1238
		1239	x &= 0x7fffffff;
		1240
		1241	/* if it's within range of binary16 normals, use fast path */
		1242	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		1243	{
		1244	/* mantissa round-to-even */
		1245	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		1246
		1247	/* handle overflow */
		1248	if (ecb_expect_false (m >= 0x00800000))
		1249	{
		1250	m >>= 1;
		1251	e += 1;
		1252	}
		1253
		1254	return s | (e << 10) | (m >> (23 - 10));
		1255	}
		1256
		1257	/* handle large numbers and infinity */
		1258	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		1259	return s | 0x7c00;
		1260
		1261	/* handle zero, subnormals and small numbers */
		1262	if (ecb_expect_true (x < 0x38800000))
		1263	{
		1264	/* zero */
		1265	if (ecb_expect_true (!x))
		1266	return s;
		1267
		1268	/* handle subnormals */
		1269
		1270	/* too small, will be zero */
		1271	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		1272	return s;
		1273
		1274	m |= 0x00800000; /* make implicit bit explicit */
		1275
		1276	/* very tricky - we need to round to the nearest e (+10) bit value */
		1277	{
		1278	unsigned int bits = 14 - e;
		1279	unsigned int half = (1 << (bits - 1)) - 1;
		1280	unsigned int even = (m >> bits) & 1;
		1281
		1282	/* if this overflows, we will end up with a normalised number */
		1283	m = (m + half + even) >> bits;
		1284	}
		1285
		1286	return s | m;
		1287	}
		1288
		1289	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		1290	m >>= 13;
		1291
		1292	return s | 0x7c00 | m | !m;
		1293	}
		1294
		1295	/*******************************************************************************/
		1296	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1297
		1298	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1299	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1300	#if 0 \
		1301	|| __i386 || __i386__ \
		1302	|| ECB_GCC_AMD64 \
		1303	|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
		1304	|| defined __s390__ || defined __s390x__ \
		1305	|| defined __mips__ \
		1306	|| defined __alpha__ \
		1307	|| defined __hppa__ \
		1308	|| defined __ia64__ \
		1309	|| defined __m68k__ \
		1310	|| defined __m88k__ \
		1311	|| defined __sh__ \
		1312	|| defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
		1313	|| (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
		1314	|| defined __aarch64__
		1315	#define ECB_STDFP 1
		1316	#include <string.h> /* for memcpy */
		1317	#else
		1318	#define ECB_STDFP 0
		1319	#endif
		1320
		1321	#ifndef ECB_NO_LIBM
		1322
		1323	#include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
		1324
		1325	/* only the oldest of old doesn't have this one. solaris. */
		1326	#ifdef INFINITY
		1327	#define ECB_INFINITY INFINITY
		1328	#else
		1329	#define ECB_INFINITY HUGE_VAL
		1330	#endif
		1331
		1332	#ifdef NAN
		1333	#define ECB_NAN NAN
		1334	#else
		1335	#define ECB_NAN ECB_INFINITY
		1336	#endif
		1337
		1338	#if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
		1339	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		1340	#define ecb_frexpf(x,e) frexpf ((x), (e))
		1341	#else
		1342	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		1343	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		1344	#endif
		1345
		1346	/* convert a float to ieee single/binary32 */
		1347	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		1348	ecb_function_ ecb_const uint32_t
		1349	ecb_float_to_binary32 (float x)
		1350	{
		1351	uint32_t r;
		1352
		1353	#if ECB_STDFP
		1354	memcpy (&r, &x, 4);
		1355	#else
		1356	/* slow emulation, works for anything but -0 */
		1357	uint32_t m;
		1358	int e;
		1359
		1360	if (x == 0e0f ) return 0x00000000U;
		1361	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1362	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1363	if (x != x ) return 0x7fbfffffU;
		1364
		1365	m = ecb_frexpf (x, &e) * 0x1000000U;
		1366
		1367	r = m & 0x80000000U;
		1368
		1369	if (r)
		1370	m = -m;
		1371
		1372	if (e <= -126)
		1373	{
		1374	m &= 0xffffffU;
		1375	m >>= (-125 - e);
		1376	e = -126;
		1377	}
		1378
		1379	r |= (e + 126) << 23;
		1380	r |= m & 0x7fffffU;
		1381	#endif
		1382
		1383	return r;
		1384	}
		1385
		1386	/* converts an ieee single/binary32 to a float */
		1387	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		1388	ecb_function_ ecb_const float
		1389	ecb_binary32_to_float (uint32_t x)
		1390	{
		1391	float r;
		1392
		1393	#if ECB_STDFP
		1394	memcpy (&r, &x, 4);
		1395	#else
		1396	/* emulation, only works for normals and subnormals and +0 */
		1397	int neg = x >> 31;
		1398	int e = (x >> 23) & 0xffU;
		1399
		1400	x &= 0x7fffffU;
		1401
		1402	if (e)
		1403	x |= 0x800000U;
		1404	else
		1405	e = 1;
		1406
		1407	/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
		1408	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1409
		1410	r = neg ? -r : r;
		1411	#endif
		1412
		1413	return r;
		1414	}
		1415
		1416	/* convert a double to ieee double/binary64 */
		1417	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1418	ecb_function_ ecb_const uint64_t
		1419	ecb_double_to_binary64 (double x)
		1420	{
		1421	uint64_t r;
		1422
		1423	#if ECB_STDFP
		1424	memcpy (&r, &x, 8);
		1425	#else
		1426	/* slow emulation, works for anything but -0 */
		1427	uint64_t m;
		1428	int e;
		1429
		1430	if (x == 0e0 ) return 0x0000000000000000U;
		1431	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1432	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1433	if (x != x ) return 0X7ff7ffffffffffffU;
		1434
		1435	m = frexp (x, &e) * 0x20000000000000U;
		1436
		1437	r = m & 0x8000000000000000;;
		1438
		1439	if (r)
		1440	m = -m;
		1441
		1442	if (e <= -1022)
		1443	{
		1444	m &= 0x1fffffffffffffU;
		1445	m >>= (-1021 - e);
		1446	e = -1022;
		1447	}
		1448
		1449	r |= ((uint64_t)(e + 1022)) << 52;
		1450	r |= m & 0xfffffffffffffU;
		1451	#endif
		1452
		1453	return r;
		1454	}
		1455
		1456	/* converts an ieee double/binary64 to a double */
		1457	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1458	ecb_function_ ecb_const double
		1459	ecb_binary64_to_double (uint64_t x)
		1460	{
		1461	double r;
		1462
		1463	#if ECB_STDFP
		1464	memcpy (&r, &x, 8);
		1465	#else
		1466	/* emulation, only works for normals and subnormals and +0 */
		1467	int neg = x >> 63;
		1468	int e = (x >> 52) & 0x7ffU;
		1469
		1470	x &= 0xfffffffffffffU;
		1471
		1472	if (e)
		1473	x |= 0x10000000000000U;
		1474	else
		1475	e = 1;
		1476
		1477	/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
		1478	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1479
		1480	r = neg ? -r : r;
		1481	#endif
		1482
		1483	return r;
		1484	}
		1485
		1486	/* convert a float to ieee half/binary16 */
		1487	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1488	ecb_function_ ecb_const uint16_t
		1489	ecb_float_to_binary16 (float x)
		1490	{
		1491	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1492	}
		1493
		1494	/* convert an ieee half/binary16 to float */
		1495	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1496	ecb_function_ ecb_const float
		1497	ecb_binary16_to_float (uint16_t x)
		1498	{
		1499	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1500	}
		1501
		1502	#endif
		1503
		1504	#endif
		1505
		1506	/* ECB.H END */
		1507
		1508	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
		1509	/* if your architecture doesn't need memory fences, e.g. because it is
		1510	* single-cpu/core, or if you use libev in a project that doesn't use libev
		1511	* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
		1512	* libev, in which cases the memory fences become nops.
		1513	* alternatively, you can remove this #error and link against libpthread,
		1514	* which will then provide the memory fences.
		1515	*/
		1516	# error "memory fences not defined for your architecture, please report"
		1517	#endif
		1518
		1519	#ifndef ECB_MEMORY_FENCE
		1520	# define ECB_MEMORY_FENCE do { } while (0)
		1521	# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		1522	# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		1523	#endif
		1524
		1525	#define expect_false(cond) ecb_expect_false (cond)
		1526	#define expect_true(cond) ecb_expect_true (cond)
		1527	#define noinline ecb_noinline
		1528
275	#define inline_size static inline	1529	#define inline_size ecb_inline
276		1530
277	#if EV_MINIMAL	1531	#if EV_FEATURE_CODE
278	# define inline_speed static noinline
279	#else
280	# define inline_speed static inline	1532	# define inline_speed ecb_inline
		1533	#else
		1534	# define inline_speed noinline static
281	#endif	1535	#endif
282		1536
283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	1537	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		1538
		1539	#if EV_MINPRI == EV_MAXPRI
		1540	# define ABSPRI(w) (((W)w), 0)
		1541	#else
284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	1542	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		1543	#endif
285		1544
286	#define EMPTY /* required for microsofts broken pseudo-c compiler */	1545	#define EMPTY /* required for microsofts broken pseudo-c compiler */
287	#define EMPTY2(a,b) /* used to suppress some warnings */	1546	#define EMPTY2(a,b) /* used to suppress some warnings */
288		1547
289	typedef ev_watcher *W;	1548	typedef ev_watcher *W;
290	typedef ev_watcher_list *WL;	1549	typedef ev_watcher_list *WL;
291	typedef ev_watcher_time *WT;	1550	typedef ev_watcher_time *WT;
292		1551
		1552	#define ev_active(w) ((W)(w))->active
		1553	#define ev_at(w) ((WT)(w))->at
		1554
		1555	#if EV_USE_REALTIME
		1556	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		1557	/* giving it a reasonably high chance of working on typical architectures */
		1558	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		1559	#endif
		1560
293	#if EV_USE_MONOTONIC	1561	#if EV_USE_MONOTONIC
294	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
295	/* giving it a reasonably high chance of working on typical architetcures */
296	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	1562	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		1563	#endif
		1564
		1565	#ifndef EV_FD_TO_WIN32_HANDLE
		1566	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		1567	#endif
		1568	#ifndef EV_WIN32_HANDLE_TO_FD
		1569	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		1570	#endif
		1571	#ifndef EV_WIN32_CLOSE_FD
		1572	# define EV_WIN32_CLOSE_FD(fd) close (fd)
297	#endif	1573	#endif
298		1574
299	#ifdef _WIN32	1575	#ifdef _WIN32
300	# include "ev_win32.c"	1576	# include "ev_win32.c"
301	#endif	1577	#endif
302		1578
303	/*****************************************************************************/	1579	/*****************************************************************************/
304		1580
		1581	/* define a suitable floor function (only used by periodics atm) */
		1582
		1583	#if EV_USE_FLOOR
		1584	# include <math.h>
		1585	# define ev_floor(v) floor (v)
		1586	#else
		1587
		1588	#include <float.h>
		1589
		1590	/* a floor() replacement function, should be independent of ev_tstamp type */
		1591	noinline
		1592	static ev_tstamp
		1593	ev_floor (ev_tstamp v)
		1594	{
		1595	/* the choice of shift factor is not terribly important */
		1596	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		1597	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		1598	#else
		1599	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		1600	#endif
		1601
		1602	/* argument too large for an unsigned long? */
		1603	if (expect_false (v >= shift))
		1604	{
		1605	ev_tstamp f;
		1606
		1607	if (v == v - 1.)
		1608	return v; /* very large number */
		1609
		1610	f = shift * ev_floor (v * (1. / shift));
		1611	return f + ev_floor (v - f);
		1612	}
		1613
		1614	/* special treatment for negative args? */
		1615	if (expect_false (v < 0.))
		1616	{
		1617	ev_tstamp f = -ev_floor (-v);
		1618
		1619	return f - (f == v ? 0 : 1);
		1620	}
		1621
		1622	/* fits into an unsigned long */
		1623	return (unsigned long)v;
		1624	}
		1625
		1626	#endif
		1627
		1628	/*****************************************************************************/
		1629
		1630	#ifdef __linux
		1631	# include <sys/utsname.h>
		1632	#endif
		1633
		1634	noinline ecb_cold
		1635	static unsigned int
		1636	ev_linux_version (void)
		1637	{
		1638	#ifdef __linux
		1639	unsigned int v = 0;
		1640	struct utsname buf;
		1641	int i;
		1642	char *p = buf.release;
		1643
		1644	if (uname (&buf))
		1645	return 0;
		1646
		1647	for (i = 3+1; --i; )
		1648	{
		1649	unsigned int c = 0;
		1650
		1651	for (;;)
		1652	{
		1653	if (*p >= '0' && *p <= '9')
		1654	c = c * 10 + *p++ - '0';
		1655	else
		1656	{
		1657	p += *p == '.';
		1658	break;
		1659	}
		1660	}
		1661
		1662	v = (v << 8) | c;
		1663	}
		1664
		1665	return v;
		1666	#else
		1667	return 0;
		1668	#endif
		1669	}
		1670
		1671	/*****************************************************************************/
		1672
		1673	#if EV_AVOID_STDIO
		1674	noinline ecb_cold
		1675	static void
		1676	ev_printerr (const char *msg)
		1677	{
		1678	write (STDERR_FILENO, msg, strlen (msg));
		1679	}
		1680	#endif
		1681
305	static void (*syserr_cb)(const char *msg);	1682	static void (*syserr_cb)(const char *msg) EV_THROW;
306		1683
		1684	ecb_cold
307	void	1685	void
308	ev_set_syserr_cb (void (*cb)(const char *msg))	1686	ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
309	{	1687	{
310	syserr_cb = cb;	1688	syserr_cb = cb;
311	}	1689	}
312		1690
313	static void noinline	1691	noinline ecb_cold
		1692	static void
314	syserr (const char *msg)	1693	ev_syserr (const char *msg)
315	{	1694	{
316	if (!msg)	1695	if (!msg)
317	msg = "(libev) system error";	1696	msg = "(libev) system error";
318		1697
319	if (syserr_cb)	1698	if (syserr_cb)
320	syserr_cb (msg);	1699	syserr_cb (msg);
321	else	1700	else
322	{	1701	{
		1702	#if EV_AVOID_STDIO
		1703	ev_printerr (msg);
		1704	ev_printerr (": ");
		1705	ev_printerr (strerror (errno));
		1706	ev_printerr ("\n");
		1707	#else
323	perror (msg);	1708	perror (msg);
		1709	#endif
324	abort ();	1710	abort ();
325	}	1711	}
326	}	1712	}
327		1713
		1714	static void *
		1715	ev_realloc_emul (void *ptr, long size) EV_THROW
		1716	{
		1717	/* some systems, notably openbsd and darwin, fail to properly
		1718	* implement realloc (x, 0) (as required by both ansi c-89 and
		1719	* the single unix specification, so work around them here.
		1720	* recently, also (at least) fedora and debian started breaking it,
		1721	* despite documenting it otherwise.
		1722	*/
		1723
		1724	if (size)
		1725	return realloc (ptr, size);
		1726
		1727	free (ptr);
		1728	return 0;
		1729	}
		1730
328	static void *(*alloc)(void *ptr, long size);	1731	static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
329		1732
		1733	ecb_cold
330	void	1734	void
331	ev_set_allocator (void *(*cb)(void *ptr, long size))	1735	ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
332	{	1736	{
333	alloc = cb;	1737	alloc = cb;
334	}	1738	}
335		1739
336	inline_speed void *	1740	inline_speed void *
337	ev_realloc (void *ptr, long size)	1741	ev_realloc (void *ptr, long size)
338	{	1742	{
339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	1743	ptr = alloc (ptr, size);
340		1744
341	if (!ptr && size)	1745	if (!ptr && size)
342	{	1746	{
		1747	#if EV_AVOID_STDIO
		1748	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		1749	#else
343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	1750	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		1751	#endif
344	abort ();	1752	abort ();
345	}	1753	}
346		1754
347	return ptr;	1755	return ptr;
348	}	1756	}
…		…
350	#define ev_malloc(size) ev_realloc (0, (size))	1758	#define ev_malloc(size) ev_realloc (0, (size))
351	#define ev_free(ptr) ev_realloc ((ptr), 0)	1759	#define ev_free(ptr) ev_realloc ((ptr), 0)
352		1760
353	/*****************************************************************************/	1761	/*****************************************************************************/
354		1762
		1763	/* set in reify when reification needed */
		1764	#define EV_ANFD_REIFY 1
		1765
		1766	/* file descriptor info structure */
355	typedef struct	1767	typedef struct
356	{	1768	{
357	WL head;	1769	WL head;
358	unsigned char events;	1770	unsigned char events; /* the events watched for */
		1771	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		1772	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359	unsigned char reify;	1773	unsigned char unused;
		1774	#if EV_USE_EPOLL
		1775	unsigned int egen; /* generation counter to counter epoll bugs */
		1776	#endif
360	#if EV_SELECT_IS_WINSOCKET	1777	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361	SOCKET handle;	1778	SOCKET handle;
362	#endif	1779	#endif
		1780	#if EV_USE_IOCP
		1781	OVERLAPPED or, ow;
		1782	#endif
363	} ANFD;	1783	} ANFD;
364		1784
		1785	/* stores the pending event set for a given watcher */
365	typedef struct	1786	typedef struct
366	{	1787	{
367	W w;	1788	W w;
368	int events;	1789	int events; /* the pending event set for the given watcher */
369	} ANPENDING;	1790	} ANPENDING;
370		1791
371	#if EV_USE_INOTIFY	1792	#if EV_USE_INOTIFY
		1793	/* hash table entry per inotify-id */
372	typedef struct	1794	typedef struct
373	{	1795	{
374	WL head;	1796	WL head;
375	} ANFS;	1797	} ANFS;
		1798	#endif
		1799
		1800	/* Heap Entry */
		1801	#if EV_HEAP_CACHE_AT
		1802	/* a heap element */
		1803	typedef struct {
		1804	ev_tstamp at;
		1805	WT w;
		1806	} ANHE;
		1807
		1808	#define ANHE_w(he) (he).w /* access watcher, read-write */
		1809	#define ANHE_at(he) (he).at /* access cached at, read-only */
		1810	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		1811	#else
		1812	/* a heap element */
		1813	typedef WT ANHE;
		1814
		1815	#define ANHE_w(he) (he)
		1816	#define ANHE_at(he) (he)->at
		1817	#define ANHE_at_cache(he)
376	#endif	1818	#endif
377		1819
378	#if EV_MULTIPLICITY	1820	#if EV_MULTIPLICITY
379		1821
380	struct ev_loop	1822	struct ev_loop
…		…
386	#undef VAR	1828	#undef VAR
387	};	1829	};
388	#include "ev_wrap.h"	1830	#include "ev_wrap.h"
389		1831
390	static struct ev_loop default_loop_struct;	1832	static struct ev_loop default_loop_struct;
391	struct ev_loop *ev_default_loop_ptr;	1833	EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
392		1834
393	#else	1835	#else
394		1836
395	ev_tstamp ev_rt_now;	1837	EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
396	#define VAR(name,decl) static decl;	1838	#define VAR(name,decl) static decl;
397	#include "ev_vars.h"	1839	#include "ev_vars.h"
398	#undef VAR	1840	#undef VAR
399		1841
400	static int ev_default_loop_ptr;	1842	static int ev_default_loop_ptr;
401		1843
402	#endif	1844	#endif
403		1845
		1846	#if EV_FEATURE_API
		1847	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		1848	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		1849	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		1850	#else
		1851	# define EV_RELEASE_CB (void)0
		1852	# define EV_ACQUIRE_CB (void)0
		1853	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		1854	#endif
		1855
		1856	#define EVBREAK_RECURSE 0x80
		1857
404	/*****************************************************************************/	1858	/*****************************************************************************/
405		1859
		1860	#ifndef EV_HAVE_EV_TIME
406	ev_tstamp	1861	ev_tstamp
407	ev_time (void)	1862	ev_time (void) EV_THROW
408	{	1863	{
409	#if EV_USE_REALTIME	1864	#if EV_USE_REALTIME
		1865	if (expect_true (have_realtime))
		1866	{
410	struct timespec ts;	1867	struct timespec ts;
411	clock_gettime (CLOCK_REALTIME, &ts);	1868	clock_gettime (CLOCK_REALTIME, &ts);
412	return ts.tv_sec + ts.tv_nsec * 1e-9;	1869	return ts.tv_sec + ts.tv_nsec * 1e-9;
413	#else	1870	}
		1871	#endif
		1872
414	struct timeval tv;	1873	struct timeval tv;
415	gettimeofday (&tv, 0);	1874	gettimeofday (&tv, 0);
416	return tv.tv_sec + tv.tv_usec * 1e-6;	1875	return tv.tv_sec + tv.tv_usec * 1e-6;
417	#endif
418	}	1876	}
		1877	#endif
419		1878
420	ev_tstamp inline_size	1879	inline_size ev_tstamp
421	get_clock (void)	1880	get_clock (void)
422	{	1881	{
423	#if EV_USE_MONOTONIC	1882	#if EV_USE_MONOTONIC
424	if (expect_true (have_monotonic))	1883	if (expect_true (have_monotonic))
425	{	1884	{
…		…
432	return ev_time ();	1891	return ev_time ();
433	}	1892	}
434		1893
435	#if EV_MULTIPLICITY	1894	#if EV_MULTIPLICITY
436	ev_tstamp	1895	ev_tstamp
437	ev_now (EV_P)	1896	ev_now (EV_P) EV_THROW
438	{	1897	{
439	return ev_rt_now;	1898	return ev_rt_now;
440	}	1899	}
441	#endif	1900	#endif
442		1901
443	void	1902	void
444	ev_sleep (ev_tstamp delay)	1903	ev_sleep (ev_tstamp delay) EV_THROW
445	{	1904	{
446	if (delay > 0.)	1905	if (delay > 0.)
447	{	1906	{
448	#if EV_USE_NANOSLEEP	1907	#if EV_USE_NANOSLEEP
449	struct timespec ts;	1908	struct timespec ts;
450		1909
451	ts.tv_sec = (time_t)delay;	1910	EV_TS_SET (ts, delay);
452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454	nanosleep (&ts, 0);	1911	nanosleep (&ts, 0);
455	#elif defined(_WIN32)	1912	#elif defined _WIN32
		1913	/* maybe this should round up, as ms is very low resolution */
		1914	/* compared to select (µs) or nanosleep (ns) */
456	Sleep (delay * 1e3);	1915	Sleep ((unsigned long)(delay * 1e3));
457	#else	1916	#else
458	struct timeval tv;	1917	struct timeval tv;
459		1918
460	tv.tv_sec = (time_t)delay;	1919	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
461	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);	1920	/* something not guaranteed by newer posix versions, but guaranteed */
462		1921	/* by older ones */
		1922	EV_TV_SET (tv, delay);
463	select (0, 0, 0, 0, &tv);	1923	select (0, 0, 0, 0, &tv);
464	#endif	1924	#endif
465	}	1925	}
466	}	1926	}
467		1927
468	/*****************************************************************************/	1928	/*****************************************************************************/
469		1929
470	int inline_size	1930	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		1931
		1932	/* find a suitable new size for the given array, */
		1933	/* hopefully by rounding to a nice-to-malloc size */
		1934	inline_size int
471	array_nextsize (int elem, int cur, int cnt)	1935	array_nextsize (int elem, int cur, int cnt)
472	{	1936	{
473	int ncur = cur + 1;	1937	int ncur = cur + 1;
474		1938
475	do	1939	do
476	ncur <<= 1;	1940	ncur <<= 1;
477	while (cnt > ncur);	1941	while (cnt > ncur);
478		1942
479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	1943	/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
480	if (elem * ncur > 4096)	1944	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481	{	1945	{
482	ncur *= elem;	1946	ncur *= elem;
483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	1947	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484	ncur = ncur - sizeof (void *) * 4;	1948	ncur = ncur - sizeof (void *) * 4;
485	ncur /= elem;	1949	ncur /= elem;
486	}	1950	}
487		1951
488	return ncur;	1952	return ncur;
489	}	1953	}
490		1954
491	static noinline void *	1955	noinline ecb_cold
		1956	static void *
492	array_realloc (int elem, void *base, int *cur, int cnt)	1957	array_realloc (int elem, void *base, int *cur, int cnt)
493	{	1958	{
494	*cur = array_nextsize (elem, *cur, cnt);	1959	*cur = array_nextsize (elem, *cur, cnt);
495	return ev_realloc (base, elem * *cur);	1960	return ev_realloc (base, elem * *cur);
496	}	1961	}
		1962
		1963	#define array_init_zero(base,count) \
		1964	memset ((void *)(base), 0, sizeof (*(base)) * (count))
497		1965
498	#define array_needsize(type,base,cur,cnt,init) \	1966	#define array_needsize(type,base,cur,cnt,init) \
499	if (expect_false ((cnt) > (cur))) \	1967	if (expect_false ((cnt) > (cur))) \
500	{ \	1968	{ \
501	int ocur_ = (cur); \	1969	ecb_unused int ocur_ = (cur); \
502	(base) = (type *)array_realloc \	1970	(base) = (type *)array_realloc \
503	(sizeof (type), (base), &(cur), (cnt)); \	1971	(sizeof (type), (base), &(cur), (cnt)); \
504	init ((base) + (ocur_), (cur) - ocur_); \	1972	init ((base) + (ocur_), (cur) - ocur_); \
505	}	1973	}
506		1974
…		…
513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	1981	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514	}	1982	}
515	#endif	1983	#endif
516		1984
517	#define array_free(stem, idx) \	1985	#define array_free(stem, idx) \
518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	1986	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519		1987
520	/*****************************************************************************/	1988	/*****************************************************************************/
521		1989
		1990	/* dummy callback for pending events */
522	void noinline	1991	noinline
		1992	static void
		1993	pendingcb (EV_P_ ev_prepare *w, int revents)
		1994	{
		1995	}
		1996
		1997	noinline
		1998	void
523	ev_feed_event (EV_P_ void *w, int revents)	1999	ev_feed_event (EV_P_ void *w, int revents) EV_THROW
524	{	2000	{
525	W w_ = (W)w;	2001	W w_ = (W)w;
526	int pri = ABSPRI (w_);	2002	int pri = ABSPRI (w_);
527		2003
528	if (expect_false (w_->pending))	2004	if (expect_false (w_->pending))
…		…
532	w_->pending = ++pendingcnt [pri];	2008	w_->pending = ++pendingcnt [pri];
533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	2009	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534	pendings [pri][w_->pending - 1].w = w_;	2010	pendings [pri][w_->pending - 1].w = w_;
535	pendings [pri][w_->pending - 1].events = revents;	2011	pendings [pri][w_->pending - 1].events = revents;
536	}	2012	}
537	}
538		2013
539	void inline_speed	2014	pendingpri = NUMPRI - 1;
		2015	}
		2016
		2017	inline_speed void
		2018	feed_reverse (EV_P_ W w)
		2019	{
		2020	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		2021	rfeeds [rfeedcnt++] = w;
		2022	}
		2023
		2024	inline_size void
		2025	feed_reverse_done (EV_P_ int revents)
		2026	{
		2027	do
		2028	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		2029	while (rfeedcnt);
		2030	}
		2031
		2032	inline_speed void
540	queue_events (EV_P_ W *events, int eventcnt, int type)	2033	queue_events (EV_P_ W *events, int eventcnt, int type)
541	{	2034	{
542	int i;	2035	int i;
543		2036
544	for (i = 0; i < eventcnt; ++i)	2037	for (i = 0; i < eventcnt; ++i)
545	ev_feed_event (EV_A_ events [i], type);	2038	ev_feed_event (EV_A_ events [i], type);
546	}	2039	}
547		2040
548	/*****************************************************************************/	2041	/*****************************************************************************/
549		2042
550	void inline_size	2043	inline_speed void
551	anfds_init (ANFD *base, int count)
552	{
553	while (count--)
554	{
555	base->head = 0;
556	base->events = EV_NONE;
557	base->reify = 0;
558
559	++base;
560	}
561	}
562
563	void inline_speed
564	fd_event (EV_P_ int fd, int revents)	2044	fd_event_nocheck (EV_P_ int fd, int revents)
565	{	2045	{
566	ANFD *anfd = anfds + fd;	2046	ANFD *anfd = anfds + fd;
567	ev_io *w;	2047	ev_io *w;
568		2048
569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	2049	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
573	if (ev)	2053	if (ev)
574	ev_feed_event (EV_A_ (W)w, ev);	2054	ev_feed_event (EV_A_ (W)w, ev);
575	}	2055	}
576	}	2056	}
577		2057
		2058	/* do not submit kernel events for fds that have reify set */
		2059	/* because that means they changed while we were polling for new events */
		2060	inline_speed void
		2061	fd_event (EV_P_ int fd, int revents)
		2062	{
		2063	ANFD *anfd = anfds + fd;
		2064
		2065	if (expect_true (!anfd->reify))
		2066	fd_event_nocheck (EV_A_ fd, revents);
		2067	}
		2068
578	void	2069	void
579	ev_feed_fd_event (EV_P_ int fd, int revents)	2070	ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
580	{	2071	{
581	if (fd >= 0 && fd < anfdmax)	2072	if (fd >= 0 && fd < anfdmax)
582	fd_event (EV_A_ fd, revents);	2073	fd_event_nocheck (EV_A_ fd, revents);
583	}	2074	}
584		2075
585	void inline_size	2076	/* make sure the external fd watch events are in-sync */
		2077	/* with the kernel/libev internal state */
		2078	inline_size void
586	fd_reify (EV_P)	2079	fd_reify (EV_P)
587	{	2080	{
588	int i;	2081	int i;
		2082
		2083	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		2084	for (i = 0; i < fdchangecnt; ++i)
		2085	{
		2086	int fd = fdchanges [i];
		2087	ANFD *anfd = anfds + fd;
		2088
		2089	if (anfd->reify & EV__IOFDSET && anfd->head)
		2090	{
		2091	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		2092
		2093	if (handle != anfd->handle)
		2094	{
		2095	unsigned long arg;
		2096
		2097	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		2098
		2099	/* handle changed, but fd didn't - we need to do it in two steps */
		2100	backend_modify (EV_A_ fd, anfd->events, 0);
		2101	anfd->events = 0;
		2102	anfd->handle = handle;
		2103	}
		2104	}
		2105	}
		2106	#endif
589		2107
590	for (i = 0; i < fdchangecnt; ++i)	2108	for (i = 0; i < fdchangecnt; ++i)
591	{	2109	{
592	int fd = fdchanges [i];	2110	int fd = fdchanges [i];
593	ANFD *anfd = anfds + fd;	2111	ANFD *anfd = anfds + fd;
594	ev_io *w;	2112	ev_io *w;
595		2113
596	unsigned char events = 0;	2114	unsigned char o_events = anfd->events;
		2115	unsigned char o_reify = anfd->reify;
597		2116
598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	2117	anfd->reify = 0;
599	events |= (unsigned char)w->events;
600		2118
601	#if EV_SELECT_IS_WINSOCKET	2119	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602	if (events)
603	{	2120	{
604	unsigned long argp;	2121	anfd->events = 0;
605	#ifdef EV_FD_TO_WIN32_HANDLE	2122
606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	2123	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
607	#else	2124	anfd->events |= (unsigned char)w->events;
608	anfd->handle = _get_osfhandle (fd);	2125
609	#endif	2126	if (o_events != anfd->events)
610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	2127	o_reify = EV__IOFDSET; /* actually |= */
611	}	2128	}
612	#endif
613		2129
614	{	2130	if (o_reify & EV__IOFDSET)
615	unsigned char o_events = anfd->events;
616	unsigned char o_reify = anfd->reify;
617
618	anfd->reify = 0;
619	anfd->events = events;
620
621	if (o_events != events || o_reify & EV_IOFDSET)
622	backend_modify (EV_A_ fd, o_events, events);	2131	backend_modify (EV_A_ fd, o_events, anfd->events);
623	}
624	}	2132	}
625		2133
626	fdchangecnt = 0;	2134	fdchangecnt = 0;
627	}	2135	}
628		2136
		2137	/* something about the given fd changed */
629	void inline_size	2138	inline_size
		2139	void
630	fd_change (EV_P_ int fd, int flags)	2140	fd_change (EV_P_ int fd, int flags)
631	{	2141	{
632	unsigned char reify = anfds [fd].reify;	2142	unsigned char reify = anfds [fd].reify;
633	anfds [fd].reify |= flags;	2143	anfds [fd].reify |= flags;
634		2144
…		…
638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	2148	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639	fdchanges [fdchangecnt - 1] = fd;	2149	fdchanges [fdchangecnt - 1] = fd;
640	}	2150	}
641	}	2151	}
642		2152
643	void inline_speed	2153	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		2154	inline_speed ecb_cold void
644	fd_kill (EV_P_ int fd)	2155	fd_kill (EV_P_ int fd)
645	{	2156	{
646	ev_io *w;	2157	ev_io *w;
647		2158
648	while ((w = (ev_io *)anfds [fd].head))	2159	while ((w = (ev_io *)anfds [fd].head))
…		…
650	ev_io_stop (EV_A_ w);	2161	ev_io_stop (EV_A_ w);
651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	2162	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652	}	2163	}
653	}	2164	}
654		2165
655	int inline_size	2166	/* check whether the given fd is actually valid, for error recovery */
		2167	inline_size ecb_cold int
656	fd_valid (int fd)	2168	fd_valid (int fd)
657	{	2169	{
658	#ifdef _WIN32	2170	#ifdef _WIN32
659	return _get_osfhandle (fd) != -1;	2171	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660	#else	2172	#else
661	return fcntl (fd, F_GETFD) != -1;	2173	return fcntl (fd, F_GETFD) != -1;
662	#endif	2174	#endif
663	}	2175	}
664		2176
665	/* called on EBADF to verify fds */	2177	/* called on EBADF to verify fds */
666	static void noinline	2178	noinline ecb_cold
		2179	static void
667	fd_ebadf (EV_P)	2180	fd_ebadf (EV_P)
668	{	2181	{
669	int fd;	2182	int fd;
670		2183
671	for (fd = 0; fd < anfdmax; ++fd)	2184	for (fd = 0; fd < anfdmax; ++fd)
672	if (anfds [fd].events)	2185	if (anfds [fd].events)
673	if (!fd_valid (fd) == -1 && errno == EBADF)	2186	if (!fd_valid (fd) && errno == EBADF)
674	fd_kill (EV_A_ fd);	2187	fd_kill (EV_A_ fd);
675	}	2188	}
676		2189
677	/* called on ENOMEM in select/poll to kill some fds and retry */	2190	/* called on ENOMEM in select/poll to kill some fds and retry */
678	static void noinline	2191	noinline ecb_cold
		2192	static void
679	fd_enomem (EV_P)	2193	fd_enomem (EV_P)
680	{	2194	{
681	int fd;	2195	int fd;
682		2196
683	for (fd = anfdmax; fd--; )	2197	for (fd = anfdmax; fd--; )
684	if (anfds [fd].events)	2198	if (anfds [fd].events)
685	{	2199	{
686	fd_kill (EV_A_ fd);	2200	fd_kill (EV_A_ fd);
687	return;	2201	break;
688	}	2202	}
689	}	2203	}
690		2204
691	/* usually called after fork if backend needs to re-arm all fds from scratch */	2205	/* usually called after fork if backend needs to re-arm all fds from scratch */
692	static void noinline	2206	noinline
		2207	static void
693	fd_rearm_all (EV_P)	2208	fd_rearm_all (EV_P)
694	{	2209	{
695	int fd;	2210	int fd;
696		2211
697	for (fd = 0; fd < anfdmax; ++fd)	2212	for (fd = 0; fd < anfdmax; ++fd)
698	if (anfds [fd].events)	2213	if (anfds [fd].events)
699	{	2214	{
700	anfds [fd].events = 0;	2215	anfds [fd].events = 0;
		2216	anfds [fd].emask = 0;
701	fd_change (EV_A_ fd, EV_IOFDSET | 1);	2217	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702	}	2218	}
703	}	2219	}
704		2220
705	/*****************************************************************************/	2221	/* used to prepare libev internal fd's */
706		2222	/* this is not fork-safe */
707	void inline_speed	2223	inline_speed void
708	upheap (WT *heap, int k)
709	{
710	WT w = heap [k];
711
712	while (k)
713	{
714	int p = (k - 1) >> 1;
715
716	if (heap [p]->at <= w->at)
717	break;
718
719	heap [k] = heap [p];
720	((W)heap [k])->active = k + 1;
721	k = p;
722	}
723
724	heap [k] = w;
725	((W)heap [k])->active = k + 1;
726	}
727
728	void inline_speed
729	downheap (WT *heap, int N, int k)
730	{
731	WT w = heap [k];
732
733	for (;;)
734	{
735	int c = (k << 1) + 1;
736
737	if (c >= N)
738	break;
739
740	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
741	? 1 : 0;
742
743	if (w->at <= heap [c]->at)
744	break;
745
746	heap [k] = heap [c];
747	((W)heap [k])->active = k + 1;
748
749	k = c;
750	}
751
752	heap [k] = w;
753	((W)heap [k])->active = k + 1;
754	}
755
756	void inline_size
757	adjustheap (WT *heap, int N, int k)
758	{
759	upheap (heap, k);
760	downheap (heap, N, k);
761	}
762
763	/*****************************************************************************/
764
765	typedef struct
766	{
767	WL head;
768	EV_ATOMIC_T gotsig;
769	} ANSIG;
770
771	static ANSIG *signals;
772	static int signalmax;
773
774	static EV_ATOMIC_T gotsig;
775
776	void inline_size
777	signals_init (ANSIG *base, int count)
778	{
779	while (count--)
780	{
781	base->head = 0;
782	base->gotsig = 0;
783
784	++base;
785	}
786	}
787
788	/*****************************************************************************/
789
790	void inline_speed
791	fd_intern (int fd)	2224	fd_intern (int fd)
792	{	2225	{
793	#ifdef _WIN32	2226	#ifdef _WIN32
794	int arg = 1;	2227	unsigned long arg = 1;
795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	2228	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796	#else	2229	#else
797	fcntl (fd, F_SETFD, FD_CLOEXEC);	2230	fcntl (fd, F_SETFD, FD_CLOEXEC);
798	fcntl (fd, F_SETFL, O_NONBLOCK);	2231	fcntl (fd, F_SETFL, O_NONBLOCK);
799	#endif	2232	#endif
800	}	2233	}
801		2234
802	static void noinline	2235	/*****************************************************************************/
		2236
		2237	/*
		2238	* the heap functions want a real array index. array index 0 is guaranteed to not
		2239	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		2240	* the branching factor of the d-tree.
		2241	*/
		2242
		2243	/*
		2244	* at the moment we allow libev the luxury of two heaps,
		2245	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		2246	* which is more cache-efficient.
		2247	* the difference is about 5% with 50000+ watchers.
		2248	*/
		2249	#if EV_USE_4HEAP
		2250
		2251	#define DHEAP 4
		2252	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		2253	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		2254	#define UPHEAP_DONE(p,k) ((p) == (k))
		2255
		2256	/* away from the root */
		2257	inline_speed void
		2258	downheap (ANHE *heap, int N, int k)
		2259	{
		2260	ANHE he = heap [k];
		2261	ANHE *E = heap + N + HEAP0;
		2262
		2263	for (;;)
		2264	{
		2265	ev_tstamp minat;
		2266	ANHE *minpos;
		2267	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		2268
		2269	/* find minimum child */
		2270	if (expect_true (pos + DHEAP - 1 < E))
		2271	{
		2272	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		2273	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		2274	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		2275	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		2276	}
		2277	else if (pos < E)
		2278	{
		2279	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		2280	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		2281	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		2282	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		2283	}
		2284	else
		2285	break;
		2286
		2287	if (ANHE_at (he) <= minat)
		2288	break;
		2289
		2290	heap [k] = *minpos;
		2291	ev_active (ANHE_w (*minpos)) = k;
		2292
		2293	k = minpos - heap;
		2294	}
		2295
		2296	heap [k] = he;
		2297	ev_active (ANHE_w (he)) = k;
		2298	}
		2299
		2300	#else /* 4HEAP */
		2301
		2302	#define HEAP0 1
		2303	#define HPARENT(k) ((k) >> 1)
		2304	#define UPHEAP_DONE(p,k) (!(p))
		2305
		2306	/* away from the root */
		2307	inline_speed void
		2308	downheap (ANHE *heap, int N, int k)
		2309	{
		2310	ANHE he = heap [k];
		2311
		2312	for (;;)
		2313	{
		2314	int c = k << 1;
		2315
		2316	if (c >= N + HEAP0)
		2317	break;
		2318
		2319	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		2320	? 1 : 0;
		2321
		2322	if (ANHE_at (he) <= ANHE_at (heap [c]))
		2323	break;
		2324
		2325	heap [k] = heap [c];
		2326	ev_active (ANHE_w (heap [k])) = k;
		2327
		2328	k = c;
		2329	}
		2330
		2331	heap [k] = he;
		2332	ev_active (ANHE_w (he)) = k;
		2333	}
		2334	#endif
		2335
		2336	/* towards the root */
		2337	inline_speed void
		2338	upheap (ANHE *heap, int k)
		2339	{
		2340	ANHE he = heap [k];
		2341
		2342	for (;;)
		2343	{
		2344	int p = HPARENT (k);
		2345
		2346	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		2347	break;
		2348
		2349	heap [k] = heap [p];
		2350	ev_active (ANHE_w (heap [k])) = k;
		2351	k = p;
		2352	}
		2353
		2354	heap [k] = he;
		2355	ev_active (ANHE_w (he)) = k;
		2356	}
		2357
		2358	/* move an element suitably so it is in a correct place */
		2359	inline_size void
		2360	adjustheap (ANHE *heap, int N, int k)
		2361	{
		2362	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
		2363	upheap (heap, k);
		2364	else
		2365	downheap (heap, N, k);
		2366	}
		2367
		2368	/* rebuild the heap: this function is used only once and executed rarely */
		2369	inline_size void
		2370	reheap (ANHE *heap, int N)
		2371	{
		2372	int i;
		2373
		2374	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		2375	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		2376	for (i = 0; i < N; ++i)
		2377	upheap (heap, i + HEAP0);
		2378	}
		2379
		2380	/*****************************************************************************/
		2381
		2382	/* associate signal watchers to a signal signal */
		2383	typedef struct
		2384	{
		2385	EV_ATOMIC_T pending;
		2386	#if EV_MULTIPLICITY
		2387	EV_P;
		2388	#endif
		2389	WL head;
		2390	} ANSIG;
		2391
		2392	static ANSIG signals [EV_NSIG - 1];
		2393
		2394	/*****************************************************************************/
		2395
		2396	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		2397
		2398	noinline ecb_cold
		2399	static void
803	evpipe_init (EV_P)	2400	evpipe_init (EV_P)
804	{	2401	{
805	if (!ev_is_active (&pipeev))	2402	if (!ev_is_active (&pipe_w))
806	{	2403	{
		2404	int fds [2];
		2405
		2406	# if EV_USE_EVENTFD
		2407	fds [0] = -1;
		2408	fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		2409	if (fds [1] < 0 && errno == EINVAL)
		2410	fds [1] = eventfd (0, 0);
		2411
		2412	if (fds [1] < 0)
		2413	# endif
		2414	{
807	while (pipe (evpipe))	2415	while (pipe (fds))
808	syserr ("(libev) error creating signal/async pipe");	2416	ev_syserr ("(libev) error creating signal/async pipe");
809		2417
810	fd_intern (evpipe [0]);	2418	fd_intern (fds [0]);
		2419	}
		2420
		2421	evpipe [0] = fds [0];
		2422
		2423	if (evpipe [1] < 0)
		2424	evpipe [1] = fds [1]; /* first call, set write fd */
		2425	else
		2426	{
		2427	/* on subsequent calls, do not change evpipe [1] */
		2428	/* so that evpipe_write can always rely on its value. */
		2429	/* this branch does not do anything sensible on windows, */
		2430	/* so must not be executed on windows */
		2431
		2432	dup2 (fds [1], evpipe [1]);
		2433	close (fds [1]);
		2434	}
		2435
811	fd_intern (evpipe [1]);	2436	fd_intern (evpipe [1]);
812		2437
813	ev_io_set (&pipeev, evpipe [0], EV_READ);	2438	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
814	ev_io_start (EV_A_ &pipeev);	2439	ev_io_start (EV_A_ &pipe_w);
815	ev_unref (EV_A); /* watcher should not keep loop alive */	2440	ev_unref (EV_A); /* watcher should not keep loop alive */
816	}	2441	}
817	}	2442	}
818		2443
819	void inline_size	2444	inline_speed void
820	evpipe_write (EV_P_ int sig, int async)	2445	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821	{	2446	{
822	if (!(gotasync || gotsig))	2447	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2448
		2449	if (expect_true (*flag))
		2450	return;
		2451
		2452	*flag = 1;
		2453	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2454
		2455	pipe_write_skipped = 1;
		2456
		2457	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2458
		2459	if (pipe_write_wanted)
823	{	2460	{
		2461	int old_errno;
		2462
		2463	pipe_write_skipped = 0;
		2464	ECB_MEMORY_FENCE_RELEASE;
		2465
824	int old_errno = errno; /* save errno becaue write might clobber it */	2466	old_errno = errno; /* save errno because write will clobber it */
825		2467
826	if (sig) gotsig = 1;	2468	#if EV_USE_EVENTFD
827	if (async) gotasync = 1;	2469	if (evpipe [0] < 0)
828		2470	{
829	write (evpipe [1], &old_errno, 1);	2471	uint64_t counter = 1;
		2472	write (evpipe [1], &counter, sizeof (uint64_t));
		2473	}
		2474	else
		2475	#endif
		2476	{
		2477	#ifdef _WIN32
		2478	WSABUF buf;
		2479	DWORD sent;
		2480	buf.buf = &buf;
		2481	buf.len = 1;
		2482	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
		2483	#else
		2484	write (evpipe [1], &(evpipe [1]), 1);
		2485	#endif
		2486	}
830		2487
831	errno = old_errno;	2488	errno = old_errno;
832	}	2489	}
833	}	2490	}
834		2491
		2492	/* called whenever the libev signal pipe */
		2493	/* got some events (signal, async) */
835	static void	2494	static void
836	pipecb (EV_P_ ev_io *iow, int revents)	2495	pipecb (EV_P_ ev_io *iow, int revents)
837	{	2496	{
		2497	int i;
		2498
		2499	if (revents & EV_READ)
838	{	2500	{
839	int dummy;	2501	#if EV_USE_EVENTFD
		2502	if (evpipe [0] < 0)
		2503	{
		2504	uint64_t counter;
		2505	read (evpipe [1], &counter, sizeof (uint64_t));
		2506	}
		2507	else
		2508	#endif
		2509	{
		2510	char dummy[4];
		2511	#ifdef _WIN32
		2512	WSABUF buf;
		2513	DWORD recvd;
		2514	DWORD flags = 0;
		2515	buf.buf = dummy;
		2516	buf.len = sizeof (dummy);
		2517	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2518	#else
840	read (evpipe [0], &dummy, 1);	2519	read (evpipe [0], &dummy, sizeof (dummy));
		2520	#endif
		2521	}
841	}	2522	}
842		2523
843	if (gotsig)	2524	pipe_write_skipped = 0;
844	{
845	int signum;
846	gotsig = 0;
847		2525
848	for (signum = signalmax; signum--; )	2526	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
849	if (signals [signum].gotsig)	2527
		2528	#if EV_SIGNAL_ENABLE
		2529	if (sig_pending)
		2530	{
		2531	sig_pending = 0;
		2532
		2533	ECB_MEMORY_FENCE;
		2534
		2535	for (i = EV_NSIG - 1; i--; )
		2536	if (expect_false (signals [i].pending))
850	ev_feed_signal_event (EV_A_ signum + 1);	2537	ev_feed_signal_event (EV_A_ i + 1);
851	}	2538	}
		2539	#endif
852		2540
853	#if EV_ASYNC_ENABLE	2541	#if EV_ASYNC_ENABLE
854	if (gotasync)	2542	if (async_pending)
855	{	2543	{
856	int i;	2544	async_pending = 0;
857	gotasync = 0;	2545
		2546	ECB_MEMORY_FENCE;
858		2547
859	for (i = asynccnt; i--; )	2548	for (i = asynccnt; i--; )
860	if (asyncs [i]->sent)	2549	if (asyncs [i]->sent)
861	{	2550	{
862	asyncs [i]->sent = 0;	2551	asyncs [i]->sent = 0;
		2552	ECB_MEMORY_FENCE_RELEASE;
863	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2553	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
864	}	2554	}
865	}	2555	}
866	#endif	2556	#endif
867	}	2557	}
868		2558
869	/*****************************************************************************/	2559	/*****************************************************************************/
870		2560
		2561	void
		2562	ev_feed_signal (int signum) EV_THROW
		2563	{
		2564	#if EV_MULTIPLICITY
		2565	EV_P;
		2566	ECB_MEMORY_FENCE_ACQUIRE;
		2567	EV_A = signals [signum - 1].loop;
		2568
		2569	if (!EV_A)
		2570	return;
		2571	#endif
		2572
		2573	signals [signum - 1].pending = 1;
		2574	evpipe_write (EV_A_ &sig_pending);
		2575	}
		2576
871	static void	2577	static void
872	sighandler (int signum)	2578	ev_sighandler (int signum)
873	{	2579	{
		2580	#ifdef _WIN32
		2581	signal (signum, ev_sighandler);
		2582	#endif
		2583
		2584	ev_feed_signal (signum);
		2585	}
		2586
		2587	noinline
		2588	void
		2589	ev_feed_signal_event (EV_P_ int signum) EV_THROW
		2590	{
		2591	WL w;
		2592
		2593	if (expect_false (signum <= 0 || signum >= EV_NSIG))
		2594	return;
		2595
		2596	--signum;
		2597
874	#if EV_MULTIPLICITY	2598	#if EV_MULTIPLICITY
875	struct ev_loop *loop = &default_loop_struct;	2599	/* it is permissible to try to feed a signal to the wrong loop */
876	#endif	2600	/* or, likely more useful, feeding a signal nobody is waiting for */
877		2601
878	#if _WIN32	2602	if (expect_false (signals [signum].loop != EV_A))
879	signal (signum, sighandler);
880	#endif
881
882	signals [signum - 1].gotsig = 1;
883	evpipe_write (EV_A_ 1, 0);
884	}
885
886	void noinline
887	ev_feed_signal_event (EV_P_ int signum)
888	{
889	WL w;
890
891	#if EV_MULTIPLICITY
892	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
893	#endif
894
895	--signum;
896
897	if (signum < 0 || signum >= signalmax)
898	return;	2603	return;
		2604	#endif
899		2605
900	signals [signum].gotsig = 0;	2606	signals [signum].pending = 0;
		2607	ECB_MEMORY_FENCE_RELEASE;
901		2608
902	for (w = signals [signum].head; w; w = w->next)	2609	for (w = signals [signum].head; w; w = w->next)
903	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
904	}	2611	}
905		2612
		2613	#if EV_USE_SIGNALFD
		2614	static void
		2615	sigfdcb (EV_P_ ev_io *iow, int revents)
		2616	{
		2617	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		2618
		2619	for (;;)
		2620	{
		2621	ssize_t res = read (sigfd, si, sizeof (si));
		2622
		2623	/* not ISO-C, as res might be -1, but works with SuS */
		2624	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		2625	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		2626
		2627	if (res < (ssize_t)sizeof (si))
		2628	break;
		2629	}
		2630	}
		2631	#endif
		2632
		2633	#endif
		2634
906	/*****************************************************************************/	2635	/*****************************************************************************/
907		2636
		2637	#if EV_CHILD_ENABLE
908	static WL childs [EV_PID_HASHSIZE];	2638	static WL childs [EV_PID_HASHSIZE];
909
910	#ifndef _WIN32
911		2639
912	static ev_signal childev;	2640	static ev_signal childev;
913		2641
914	#ifndef WIFCONTINUED	2642	#ifndef WIFCONTINUED
915	# define WIFCONTINUED(status) 0	2643	# define WIFCONTINUED(status) 0
916	#endif	2644	#endif
917		2645
918	void inline_speed	2646	/* handle a single child status event */
		2647	inline_speed void
919	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	2648	child_reap (EV_P_ int chain, int pid, int status)
920	{	2649	{
921	ev_child *w;	2650	ev_child *w;
922	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	2651	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
923		2652
924	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	2653	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
925	{	2654	{
926	if ((w->pid == pid || !w->pid)	2655	if ((w->pid == pid || !w->pid)
927	&& (!traced || (w->flags & 1)))	2656	&& (!traced || (w->flags & 1)))
928	{	2657	{
929	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	2658	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
930	w->rpid = pid;	2659	w->rpid = pid;
931	w->rstatus = status;	2660	w->rstatus = status;
932	ev_feed_event (EV_A_ (W)w, EV_CHILD);	2661	ev_feed_event (EV_A_ (W)w, EV_CHILD);
933	}	2662	}
934	}	2663	}
…		…
936		2665
937	#ifndef WCONTINUED	2666	#ifndef WCONTINUED
938	# define WCONTINUED 0	2667	# define WCONTINUED 0
939	#endif	2668	#endif
940		2669
		2670	/* called on sigchld etc., calls waitpid */
941	static void	2671	static void
942	childcb (EV_P_ ev_signal *sw, int revents)	2672	childcb (EV_P_ ev_signal *sw, int revents)
943	{	2673	{
944	int pid, status;	2674	int pid, status;
945		2675
…		…
948	if (!WCONTINUED	2678	if (!WCONTINUED
949	|| errno != EINVAL	2679	|| errno != EINVAL
950	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	2680	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
951	return;	2681	return;
952		2682
953	/* make sure we are called again until all childs have been reaped */	2683	/* make sure we are called again until all children have been reaped */
954	/* we need to do it this way so that the callback gets called before we continue */	2684	/* we need to do it this way so that the callback gets called before we continue */
955	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	2685	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
956		2686
957	child_reap (EV_A_ sw, pid, pid, status);	2687	child_reap (EV_A_ pid, pid, status);
958	if (EV_PID_HASHSIZE > 1)	2688	if ((EV_PID_HASHSIZE) > 1)
959	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	2689	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
960	}	2690	}
961		2691
962	#endif	2692	#endif
963		2693
964	/*****************************************************************************/	2694	/*****************************************************************************/
965		2695
		2696	#if EV_USE_IOCP
		2697	# include "ev_iocp.c"
		2698	#endif
966	#if EV_USE_PORT	2699	#if EV_USE_PORT
967	# include "ev_port.c"	2700	# include "ev_port.c"
968	#endif	2701	#endif
969	#if EV_USE_KQUEUE	2702	#if EV_USE_KQUEUE
970	# include "ev_kqueue.c"	2703	# include "ev_kqueue.c"
…		…
977	#endif	2710	#endif
978	#if EV_USE_SELECT	2711	#if EV_USE_SELECT
979	# include "ev_select.c"	2712	# include "ev_select.c"
980	#endif	2713	#endif
981		2714
982	int	2715	ecb_cold int
983	ev_version_major (void)	2716	ev_version_major (void) EV_THROW
984	{	2717	{
985	return EV_VERSION_MAJOR;	2718	return EV_VERSION_MAJOR;
986	}	2719	}
987		2720
988	int	2721	ecb_cold int
989	ev_version_minor (void)	2722	ev_version_minor (void) EV_THROW
990	{	2723	{
991	return EV_VERSION_MINOR;	2724	return EV_VERSION_MINOR;
992	}	2725	}
993		2726
994	/* return true if we are running with elevated privileges and should ignore env variables */	2727	/* return true if we are running with elevated privileges and should ignore env variables */
995	int inline_size	2728	inline_size ecb_cold int
996	enable_secure (void)	2729	enable_secure (void)
997	{	2730	{
998	#ifdef _WIN32	2731	#ifdef _WIN32
999	return 0;	2732	return 0;
1000	#else	2733	#else
1001	return getuid () != geteuid ()	2734	return getuid () != geteuid ()
1002	|| getgid () != getegid ();	2735	|| getgid () != getegid ();
1003	#endif	2736	#endif
1004	}	2737	}
1005		2738
		2739	ecb_cold
1006	unsigned int	2740	unsigned int
1007	ev_supported_backends (void)	2741	ev_supported_backends (void) EV_THROW
1008	{	2742	{
1009	unsigned int flags = 0;	2743	unsigned int flags = 0;
1010		2744
1011	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2745	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1012	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	2746	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
…		…
1015	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	2749	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1016		2750
1017	return flags;	2751	return flags;
1018	}	2752	}
1019		2753
		2754	ecb_cold
1020	unsigned int	2755	unsigned int
1021	ev_recommended_backends (void)	2756	ev_recommended_backends (void) EV_THROW
1022	{	2757	{
1023	unsigned int flags = ev_supported_backends ();	2758	unsigned int flags = ev_supported_backends ();
1024		2759
1025	#ifndef __NetBSD__	2760	#ifndef __NetBSD__
1026	/* kqueue is borked on everything but netbsd apparently */	2761	/* kqueue is borked on everything but netbsd apparently */
1027	/* it usually doesn't work correctly on anything but sockets and pipes */	2762	/* it usually doesn't work correctly on anything but sockets and pipes */
1028	flags &= ~EVBACKEND_KQUEUE;	2763	flags &= ~EVBACKEND_KQUEUE;
1029	#endif	2764	#endif
1030	#ifdef __APPLE__	2765	#ifdef __APPLE__
1031	// flags &= ~EVBACKEND_KQUEUE; for documentation	2766	/* only select works correctly on that "unix-certified" platform */
1032	flags &= ~EVBACKEND_POLL;	2767	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		2768	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		2769	#endif
		2770	#ifdef __FreeBSD__
		2771	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1033	#endif	2772	#endif
1034		2773
1035	return flags;	2774	return flags;
1036	}	2775	}
1037		2776
		2777	ecb_cold
1038	unsigned int	2778	unsigned int
1039	ev_embeddable_backends (void)	2779	ev_embeddable_backends (void) EV_THROW
1040	{	2780	{
1041	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2781	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1042		2782
1043	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	2783	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1044	/* please fix it and tell me how to detect the fix */	2784	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1045	flags &= ~EVBACKEND_EPOLL;	2785	flags &= ~EVBACKEND_EPOLL;
1046		2786
1047	return flags;	2787	return flags;
1048	}	2788	}
1049		2789
1050	unsigned int	2790	unsigned int
1051	ev_backend (EV_P)	2791	ev_backend (EV_P) EV_THROW
1052	{	2792	{
1053	return backend;	2793	return backend;
1054	}	2794	}
1055		2795
		2796	#if EV_FEATURE_API
1056	unsigned int	2797	unsigned int
1057	ev_loop_count (EV_P)	2798	ev_iteration (EV_P) EV_THROW
1058	{	2799	{
1059	return loop_count;	2800	return loop_count;
1060	}	2801	}
1061		2802
		2803	unsigned int
		2804	ev_depth (EV_P) EV_THROW
		2805	{
		2806	return loop_depth;
		2807	}
		2808
1062	void	2809	void
1063	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	2810	ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1064	{	2811	{
1065	io_blocktime = interval;	2812	io_blocktime = interval;
1066	}	2813	}
1067		2814
1068	void	2815	void
1069	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	2816	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1070	{	2817	{
1071	timeout_blocktime = interval;	2818	timeout_blocktime = interval;
1072	}	2819	}
1073		2820
1074	static void noinline	2821	void
		2822	ev_set_userdata (EV_P_ void *data) EV_THROW
		2823	{
		2824	userdata = data;
		2825	}
		2826
		2827	void *
		2828	ev_userdata (EV_P) EV_THROW
		2829	{
		2830	return userdata;
		2831	}
		2832
		2833	void
		2834	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
		2835	{
		2836	invoke_cb = invoke_pending_cb;
		2837	}
		2838
		2839	void
		2840	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
		2841	{
		2842	release_cb = release;
		2843	acquire_cb = acquire;
		2844	}
		2845	#endif
		2846
		2847	/* initialise a loop structure, must be zero-initialised */
		2848	noinline ecb_cold
		2849	static void
1075	loop_init (EV_P_ unsigned int flags)	2850	loop_init (EV_P_ unsigned int flags) EV_THROW
1076	{	2851	{
1077	if (!backend)	2852	if (!backend)
1078	{	2853	{
		2854	origflags = flags;
		2855
		2856	#if EV_USE_REALTIME
		2857	if (!have_realtime)
		2858	{
		2859	struct timespec ts;
		2860
		2861	if (!clock_gettime (CLOCK_REALTIME, &ts))
		2862	have_realtime = 1;
		2863	}
		2864	#endif
		2865
1079	#if EV_USE_MONOTONIC	2866	#if EV_USE_MONOTONIC
		2867	if (!have_monotonic)
1080	{	2868	{
1081	struct timespec ts;	2869	struct timespec ts;
		2870
1082	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	2871	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1083	have_monotonic = 1;	2872	have_monotonic = 1;
1084	}	2873	}
1085	#endif
1086
1087	ev_rt_now = ev_time ();
1088	mn_now = get_clock ();
1089	now_floor = mn_now;
1090	rtmn_diff = ev_rt_now - mn_now;
1091
1092	io_blocktime = 0.;
1093	timeout_blocktime = 0.;
1094	backend = 0;
1095	backend_fd = -1;
1096	gotasync = 0;
1097	#if EV_USE_INOTIFY
1098	fs_fd = -2;
1099	#endif	2874	#endif
1100		2875
1101	/* pid check not overridable via env */	2876	/* pid check not overridable via env */
1102	#ifndef _WIN32	2877	#ifndef _WIN32
1103	if (flags & EVFLAG_FORKCHECK)	2878	if (flags & EVFLAG_FORKCHECK)
…		…
1107	if (!(flags & EVFLAG_NOENV)	2882	if (!(flags & EVFLAG_NOENV)
1108	&& !enable_secure ()	2883	&& !enable_secure ()
1109	&& getenv ("LIBEV_FLAGS"))	2884	&& getenv ("LIBEV_FLAGS"))
1110	flags = atoi (getenv ("LIBEV_FLAGS"));	2885	flags = atoi (getenv ("LIBEV_FLAGS"));
1111		2886
1112	if (!(flags & 0x0000ffffUL))	2887	ev_rt_now = ev_time ();
		2888	mn_now = get_clock ();
		2889	now_floor = mn_now;
		2890	rtmn_diff = ev_rt_now - mn_now;
		2891	#if EV_FEATURE_API
		2892	invoke_cb = ev_invoke_pending;
		2893	#endif
		2894
		2895	io_blocktime = 0.;
		2896	timeout_blocktime = 0.;
		2897	backend = 0;
		2898	backend_fd = -1;
		2899	sig_pending = 0;
		2900	#if EV_ASYNC_ENABLE
		2901	async_pending = 0;
		2902	#endif
		2903	pipe_write_skipped = 0;
		2904	pipe_write_wanted = 0;
		2905	evpipe [0] = -1;
		2906	evpipe [1] = -1;
		2907	#if EV_USE_INOTIFY
		2908	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		2909	#endif
		2910	#if EV_USE_SIGNALFD
		2911	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		2912	#endif
		2913
		2914	if (!(flags & EVBACKEND_MASK))
1113	flags |= ev_recommended_backends ();	2915	flags |= ev_recommended_backends ();
1114		2916
		2917	#if EV_USE_IOCP
		2918	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		2919	#endif
1115	#if EV_USE_PORT	2920	#if EV_USE_PORT
1116	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	2921	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1117	#endif	2922	#endif
1118	#if EV_USE_KQUEUE	2923	#if EV_USE_KQUEUE
1119	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	2924	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1126	#endif	2931	#endif
1127	#if EV_USE_SELECT	2932	#if EV_USE_SELECT
1128	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	2933	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1129	#endif	2934	#endif
1130		2935
		2936	ev_prepare_init (&pending_w, pendingcb);
		2937
		2938	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1131	ev_init (&pipeev, pipecb);	2939	ev_init (&pipe_w, pipecb);
1132	ev_set_priority (&pipeev, EV_MAXPRI);	2940	ev_set_priority (&pipe_w, EV_MAXPRI);
		2941	#endif
1133	}	2942	}
1134	}	2943	}
1135		2944
1136	static void noinline	2945	/* free up a loop structure */
		2946	ecb_cold
		2947	void
1137	loop_destroy (EV_P)	2948	ev_loop_destroy (EV_P)
1138	{	2949	{
1139	int i;	2950	int i;
1140		2951
		2952	#if EV_MULTIPLICITY
		2953	/* mimic free (0) */
		2954	if (!EV_A)
		2955	return;
		2956	#endif
		2957
		2958	#if EV_CLEANUP_ENABLE
		2959	/* queue cleanup watchers (and execute them) */
		2960	if (expect_false (cleanupcnt))
		2961	{
		2962	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		2963	EV_INVOKE_PENDING;
		2964	}
		2965	#endif
		2966
		2967	#if EV_CHILD_ENABLE
		2968	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
		2969	{
		2970	ev_ref (EV_A); /* child watcher */
		2971	ev_signal_stop (EV_A_ &childev);
		2972	}
		2973	#endif
		2974
1141	if (ev_is_active (&pipeev))	2975	if (ev_is_active (&pipe_w))
1142	{	2976	{
1143	ev_ref (EV_A); /* signal watcher */	2977	/*ev_ref (EV_A);*/
1144	ev_io_stop (EV_A_ &pipeev);	2978	/*ev_io_stop (EV_A_ &pipe_w);*/
1145		2979
1146	close (evpipe [0]); evpipe [0] = 0;	2980	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1147	close (evpipe [1]); evpipe [1] = 0;	2981	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1148	}	2982	}
		2983
		2984	#if EV_USE_SIGNALFD
		2985	if (ev_is_active (&sigfd_w))
		2986	close (sigfd);
		2987	#endif
1149		2988
1150	#if EV_USE_INOTIFY	2989	#if EV_USE_INOTIFY
1151	if (fs_fd >= 0)	2990	if (fs_fd >= 0)
1152	close (fs_fd);	2991	close (fs_fd);
1153	#endif	2992	#endif
1154		2993
1155	if (backend_fd >= 0)	2994	if (backend_fd >= 0)
1156	close (backend_fd);	2995	close (backend_fd);
1157		2996
		2997	#if EV_USE_IOCP
		2998	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		2999	#endif
1158	#if EV_USE_PORT	3000	#if EV_USE_PORT
1159	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	3001	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1160	#endif	3002	#endif
1161	#if EV_USE_KQUEUE	3003	#if EV_USE_KQUEUE
1162	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	3004	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1177	#if EV_IDLE_ENABLE	3019	#if EV_IDLE_ENABLE
1178	array_free (idle, [i]);	3020	array_free (idle, [i]);
1179	#endif	3021	#endif
1180	}	3022	}
1181		3023
1182	ev_free (anfds); anfdmax = 0;	3024	ev_free (anfds); anfds = 0; anfdmax = 0;
1183		3025
1184	/* have to use the microsoft-never-gets-it-right macro */	3026	/* have to use the microsoft-never-gets-it-right macro */
		3027	array_free (rfeed, EMPTY);
1185	array_free (fdchange, EMPTY);	3028	array_free (fdchange, EMPTY);
1186	array_free (timer, EMPTY);	3029	array_free (timer, EMPTY);
1187	#if EV_PERIODIC_ENABLE	3030	#if EV_PERIODIC_ENABLE
1188	array_free (periodic, EMPTY);	3031	array_free (periodic, EMPTY);
1189	#endif	3032	#endif
1190	#if EV_FORK_ENABLE	3033	#if EV_FORK_ENABLE
1191	array_free (fork, EMPTY);	3034	array_free (fork, EMPTY);
1192	#endif	3035	#endif
		3036	#if EV_CLEANUP_ENABLE
		3037	array_free (cleanup, EMPTY);
		3038	#endif
1193	array_free (prepare, EMPTY);	3039	array_free (prepare, EMPTY);
1194	array_free (check, EMPTY);	3040	array_free (check, EMPTY);
1195	#if EV_ASYNC_ENABLE	3041	#if EV_ASYNC_ENABLE
1196	array_free (async, EMPTY);	3042	array_free (async, EMPTY);
1197	#endif	3043	#endif
1198		3044
1199	backend = 0;	3045	backend = 0;
1200	}
1201		3046
		3047	#if EV_MULTIPLICITY
		3048	if (ev_is_default_loop (EV_A))
		3049	#endif
		3050	ev_default_loop_ptr = 0;
		3051	#if EV_MULTIPLICITY
		3052	else
		3053	ev_free (EV_A);
		3054	#endif
		3055	}
		3056
		3057	#if EV_USE_INOTIFY
1202	void inline_size infy_fork (EV_P);	3058	inline_size void infy_fork (EV_P);
		3059	#endif
1203		3060
1204	void inline_size	3061	inline_size void
1205	loop_fork (EV_P)	3062	loop_fork (EV_P)
1206	{	3063	{
1207	#if EV_USE_PORT	3064	#if EV_USE_PORT
1208	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	3065	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1209	#endif	3066	#endif
…		…
1215	#endif	3072	#endif
1216	#if EV_USE_INOTIFY	3073	#if EV_USE_INOTIFY
1217	infy_fork (EV_A);	3074	infy_fork (EV_A);
1218	#endif	3075	#endif
1219		3076
1220	if (ev_is_active (&pipeev))	3077	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		3078	if (ev_is_active (&pipe_w) && postfork != 2)
1221	{	3079	{
1222	/* this "locks" the handlers against writing to the pipe */	3080	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1223	gotsig = gotasync = 1;
1224		3081
1225	ev_ref (EV_A);	3082	ev_ref (EV_A);
1226	ev_io_stop (EV_A_ &pipeev);	3083	ev_io_stop (EV_A_ &pipe_w);
1227	close (evpipe [0]);	3084
1228	close (evpipe [1]);	3085	if (evpipe [0] >= 0)
		3086	EV_WIN32_CLOSE_FD (evpipe [0]);
1229		3087
1230	evpipe_init (EV_A);	3088	evpipe_init (EV_A);
1231	/* now iterate over everything, in case we missed something */	3089	/* iterate over everything, in case we missed something before */
1232	pipecb (EV_A_ &pipeev, EV_READ);	3090	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1233	}	3091	}
		3092	#endif
1234		3093
1235	postfork = 0;	3094	postfork = 0;
1236	}	3095	}
1237		3096
1238	#if EV_MULTIPLICITY	3097	#if EV_MULTIPLICITY
		3098
		3099	ecb_cold
1239	struct ev_loop *	3100	struct ev_loop *
1240	ev_loop_new (unsigned int flags)	3101	ev_loop_new (unsigned int flags) EV_THROW
1241	{	3102	{
1242	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	3103	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1243		3104
1244	memset (loop, 0, sizeof (struct ev_loop));	3105	memset (EV_A, 0, sizeof (struct ev_loop));
1245
1246	loop_init (EV_A_ flags);	3106	loop_init (EV_A_ flags);
1247		3107
1248	if (ev_backend (EV_A))	3108	if (ev_backend (EV_A))
1249	return loop;	3109	return EV_A;
1250		3110
		3111	ev_free (EV_A);
1251	return 0;	3112	return 0;
1252	}	3113	}
1253		3114
1254	void	3115	#endif /* multiplicity */
1255	ev_loop_destroy (EV_P)
1256	{
1257	loop_destroy (EV_A);
1258	ev_free (loop);
1259	}
1260		3116
1261	void	3117	#if EV_VERIFY
1262	ev_loop_fork (EV_P)	3118	noinline ecb_cold
		3119	static void
		3120	verify_watcher (EV_P_ W w)
1263	{	3121	{
1264	postfork = 1; /* must be in line with ev_default_fork */	3122	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1265	}
1266		3123
		3124	if (w->pending)
		3125	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		3126	}
		3127
		3128	noinline ecb_cold
		3129	static void
		3130	verify_heap (EV_P_ ANHE *heap, int N)
		3131	{
		3132	int i;
		3133
		3134	for (i = HEAP0; i < N + HEAP0; ++i)
		3135	{
		3136	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		3137	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		3138	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		3139
		3140	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		3141	}
		3142	}
		3143
		3144	noinline ecb_cold
		3145	static void
		3146	array_verify (EV_P_ W *ws, int cnt)
		3147	{
		3148	while (cnt--)
		3149	{
		3150	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		3151	verify_watcher (EV_A_ ws [cnt]);
		3152	}
		3153	}
		3154	#endif
		3155
		3156	#if EV_FEATURE_API
		3157	void ecb_cold
		3158	ev_verify (EV_P) EV_THROW
		3159	{
		3160	#if EV_VERIFY
		3161	int i;
		3162	WL w, w2;
		3163
		3164	assert (activecnt >= -1);
		3165
		3166	assert (fdchangemax >= fdchangecnt);
		3167	for (i = 0; i < fdchangecnt; ++i)
		3168	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		3169
		3170	assert (anfdmax >= 0);
		3171	for (i = 0; i < anfdmax; ++i)
		3172	{
		3173	int j = 0;
		3174
		3175	for (w = w2 = anfds [i].head; w; w = w->next)
		3176	{
		3177	verify_watcher (EV_A_ (W)w);
		3178
		3179	if (j++ & 1)
		3180	{
		3181	assert (("libev: io watcher list contains a loop", w != w2));
		3182	w2 = w2->next;
		3183	}
		3184
		3185	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		3186	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		3187	}
		3188	}
		3189
		3190	assert (timermax >= timercnt);
		3191	verify_heap (EV_A_ timers, timercnt);
		3192
		3193	#if EV_PERIODIC_ENABLE
		3194	assert (periodicmax >= periodiccnt);
		3195	verify_heap (EV_A_ periodics, periodiccnt);
		3196	#endif
		3197
		3198	for (i = NUMPRI; i--; )
		3199	{
		3200	assert (pendingmax [i] >= pendingcnt [i]);
		3201	#if EV_IDLE_ENABLE
		3202	assert (idleall >= 0);
		3203	assert (idlemax [i] >= idlecnt [i]);
		3204	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		3205	#endif
		3206	}
		3207
		3208	#if EV_FORK_ENABLE
		3209	assert (forkmax >= forkcnt);
		3210	array_verify (EV_A_ (W *)forks, forkcnt);
		3211	#endif
		3212
		3213	#if EV_CLEANUP_ENABLE
		3214	assert (cleanupmax >= cleanupcnt);
		3215	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		3216	#endif
		3217
		3218	#if EV_ASYNC_ENABLE
		3219	assert (asyncmax >= asynccnt);
		3220	array_verify (EV_A_ (W *)asyncs, asynccnt);
		3221	#endif
		3222
		3223	#if EV_PREPARE_ENABLE
		3224	assert (preparemax >= preparecnt);
		3225	array_verify (EV_A_ (W *)prepares, preparecnt);
		3226	#endif
		3227
		3228	#if EV_CHECK_ENABLE
		3229	assert (checkmax >= checkcnt);
		3230	array_verify (EV_A_ (W *)checks, checkcnt);
		3231	#endif
		3232
		3233	# if 0
		3234	#if EV_CHILD_ENABLE
		3235	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		3236	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		3237	#endif
		3238	# endif
		3239	#endif
		3240	}
1267	#endif	3241	#endif
1268		3242
1269	#if EV_MULTIPLICITY	3243	#if EV_MULTIPLICITY
		3244	ecb_cold
1270	struct ev_loop *	3245	struct ev_loop *
1271	ev_default_loop_init (unsigned int flags)
1272	#else	3246	#else
1273	int	3247	int
		3248	#endif
1274	ev_default_loop (unsigned int flags)	3249	ev_default_loop (unsigned int flags) EV_THROW
1275	#endif
1276	{	3250	{
1277	if (!ev_default_loop_ptr)	3251	if (!ev_default_loop_ptr)
1278	{	3252	{
1279	#if EV_MULTIPLICITY	3253	#if EV_MULTIPLICITY
1280	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	3254	EV_P = ev_default_loop_ptr = &default_loop_struct;
1281	#else	3255	#else
1282	ev_default_loop_ptr = 1;	3256	ev_default_loop_ptr = 1;
1283	#endif	3257	#endif
1284		3258
1285	loop_init (EV_A_ flags);	3259	loop_init (EV_A_ flags);
1286		3260
1287	if (ev_backend (EV_A))	3261	if (ev_backend (EV_A))
1288	{	3262	{
1289	#ifndef _WIN32	3263	#if EV_CHILD_ENABLE
1290	ev_signal_init (&childev, childcb, SIGCHLD);	3264	ev_signal_init (&childev, childcb, SIGCHLD);
1291	ev_set_priority (&childev, EV_MAXPRI);	3265	ev_set_priority (&childev, EV_MAXPRI);
1292	ev_signal_start (EV_A_ &childev);	3266	ev_signal_start (EV_A_ &childev);
1293	ev_unref (EV_A); /* child watcher should not keep loop alive */	3267	ev_unref (EV_A); /* child watcher should not keep loop alive */
1294	#endif	3268	#endif
…		…
1299		3273
1300	return ev_default_loop_ptr;	3274	return ev_default_loop_ptr;
1301	}	3275	}
1302		3276
1303	void	3277	void
1304	ev_default_destroy (void)	3278	ev_loop_fork (EV_P) EV_THROW
1305	{	3279	{
1306	#if EV_MULTIPLICITY	3280	postfork = 1;
1307	struct ev_loop *loop = ev_default_loop_ptr;
1308	#endif
1309
1310	#ifndef _WIN32
1311	ev_ref (EV_A); /* child watcher */
1312	ev_signal_stop (EV_A_ &childev);
1313	#endif
1314
1315	loop_destroy (EV_A);
1316	}
1317
1318	void
1319	ev_default_fork (void)
1320	{
1321	#if EV_MULTIPLICITY
1322	struct ev_loop *loop = ev_default_loop_ptr;
1323	#endif
1324
1325	if (backend)
1326	postfork = 1; /* must be in line with ev_loop_fork */
1327	}	3281	}
1328		3282
1329	/*****************************************************************************/	3283	/*****************************************************************************/
1330		3284
1331	void	3285	void
1332	ev_invoke (EV_P_ void *w, int revents)	3286	ev_invoke (EV_P_ void *w, int revents)
1333	{	3287	{
1334	EV_CB_INVOKE ((W)w, revents);	3288	EV_CB_INVOKE ((W)w, revents);
1335	}	3289	}
1336		3290
1337	void inline_speed	3291	unsigned int
1338	call_pending (EV_P)	3292	ev_pending_count (EV_P) EV_THROW
1339	{	3293	{
1340	int pri;	3294	int pri;
		3295	unsigned int count = 0;
1341		3296
1342	for (pri = NUMPRI; pri--; )	3297	for (pri = NUMPRI; pri--; )
		3298	count += pendingcnt [pri];
		3299
		3300	return count;
		3301	}
		3302
		3303	noinline
		3304	void
		3305	ev_invoke_pending (EV_P)
		3306	{
		3307	pendingpri = NUMPRI;
		3308
		3309	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		3310	{
		3311	--pendingpri;
		3312
1343	while (pendingcnt [pri])	3313	while (pendingcnt [pendingpri])
1344	{
1345	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1346
1347	if (expect_true (p->w))
1348	{
1349	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1350
1351	p->w->pending = 0;
1352	EV_CB_INVOKE (p->w, p->events);
1353	}
1354	}
1355	}
1356
1357	void inline_size
1358	timers_reify (EV_P)
1359	{
1360	while (timercnt && ((WT)timers [0])->at <= mn_now)
1361	{
1362	ev_timer *w = (ev_timer *)timers [0];
1363
1364	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1365
1366	/* first reschedule or stop timer */
1367	if (w->repeat)
1368	{	3314	{
1369	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	3315	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1370		3316
1371	((WT)w)->at += w->repeat;	3317	p->w->pending = 0;
1372	if (((WT)w)->at < mn_now)	3318	EV_CB_INVOKE (p->w, p->events);
1373	((WT)w)->at = mn_now;	3319	EV_FREQUENT_CHECK;
1374
1375	downheap (timers, timercnt, 0);
1376	}	3320	}
1377	else
1378	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1379
1380	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1381	}
1382	}
1383
1384	#if EV_PERIODIC_ENABLE
1385	void inline_size
1386	periodics_reify (EV_P)
1387	{
1388	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1389	{	3321	}
1390	ev_periodic *w = (ev_periodic *)periodics [0];
1391
1392	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1393
1394	/* first reschedule or stop timer */
1395	if (w->reschedule_cb)
1396	{
1397	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1398	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1399	downheap (periodics, periodiccnt, 0);
1400	}
1401	else if (w->interval)
1402	{
1403	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1404	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1405	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1406	downheap (periodics, periodiccnt, 0);
1407	}
1408	else
1409	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1410
1411	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1412	}
1413	}	3322	}
1414
1415	static void noinline
1416	periodics_reschedule (EV_P)
1417	{
1418	int i;
1419
1420	/* adjust periodics after time jump */
1421	for (i = 0; i < periodiccnt; ++i)
1422	{
1423	ev_periodic *w = (ev_periodic *)periodics [i];
1424
1425	if (w->reschedule_cb)
1426	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1427	else if (w->interval)
1428	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1429	}
1430
1431	/* now rebuild the heap */
1432	for (i = periodiccnt >> 1; i--; )
1433	downheap (periodics, periodiccnt, i);
1434	}
1435	#endif
1436		3323
1437	#if EV_IDLE_ENABLE	3324	#if EV_IDLE_ENABLE
1438	void inline_size	3325	/* make idle watchers pending. this handles the "call-idle */
		3326	/* only when higher priorities are idle" logic */
		3327	inline_size void
1439	idle_reify (EV_P)	3328	idle_reify (EV_P)
1440	{	3329	{
1441	if (expect_false (idleall))	3330	if (expect_false (idleall))
1442	{	3331	{
1443	int pri;	3332	int pri;
…		…
1455	}	3344	}
1456	}	3345	}
1457	}	3346	}
1458	#endif	3347	#endif
1459		3348
1460	void inline_speed	3349	/* make timers pending */
		3350	inline_size void
		3351	timers_reify (EV_P)
		3352	{
		3353	EV_FREQUENT_CHECK;
		3354
		3355	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		3356	{
		3357	do
		3358	{
		3359	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		3360
		3361	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		3362
		3363	/* first reschedule or stop timer */
		3364	if (w->repeat)
		3365	{
		3366	ev_at (w) += w->repeat;
		3367	if (ev_at (w) < mn_now)
		3368	ev_at (w) = mn_now;
		3369
		3370	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		3371
		3372	ANHE_at_cache (timers [HEAP0]);
		3373	downheap (timers, timercnt, HEAP0);
		3374	}
		3375	else
		3376	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		3377
		3378	EV_FREQUENT_CHECK;
		3379	feed_reverse (EV_A_ (W)w);
		3380	}
		3381	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		3382
		3383	feed_reverse_done (EV_A_ EV_TIMER);
		3384	}
		3385	}
		3386
		3387	#if EV_PERIODIC_ENABLE
		3388
		3389	noinline
		3390	static void
		3391	periodic_recalc (EV_P_ ev_periodic *w)
		3392	{
		3393	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		3394	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		3395
		3396	/* the above almost always errs on the low side */
		3397	while (at <= ev_rt_now)
		3398	{
		3399	ev_tstamp nat = at + w->interval;
		3400
		3401	/* when resolution fails us, we use ev_rt_now */
		3402	if (expect_false (nat == at))
		3403	{
		3404	at = ev_rt_now;
		3405	break;
		3406	}
		3407
		3408	at = nat;
		3409	}
		3410
		3411	ev_at (w) = at;
		3412	}
		3413
		3414	/* make periodics pending */
		3415	inline_size void
		3416	periodics_reify (EV_P)
		3417	{
		3418	EV_FREQUENT_CHECK;
		3419
		3420	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		3421	{
		3422	do
		3423	{
		3424	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		3425
		3426	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		3427
		3428	/* first reschedule or stop timer */
		3429	if (w->reschedule_cb)
		3430	{
		3431	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		3432
		3433	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		3434
		3435	ANHE_at_cache (periodics [HEAP0]);
		3436	downheap (periodics, periodiccnt, HEAP0);
		3437	}
		3438	else if (w->interval)
		3439	{
		3440	periodic_recalc (EV_A_ w);
		3441	ANHE_at_cache (periodics [HEAP0]);
		3442	downheap (periodics, periodiccnt, HEAP0);
		3443	}
		3444	else
		3445	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		3446
		3447	EV_FREQUENT_CHECK;
		3448	feed_reverse (EV_A_ (W)w);
		3449	}
		3450	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		3451
		3452	feed_reverse_done (EV_A_ EV_PERIODIC);
		3453	}
		3454	}
		3455
		3456	/* simply recalculate all periodics */
		3457	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		3458	noinline ecb_cold
		3459	static void
		3460	periodics_reschedule (EV_P)
		3461	{
		3462	int i;
		3463
		3464	/* adjust periodics after time jump */
		3465	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		3466	{
		3467	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		3468
		3469	if (w->reschedule_cb)
		3470	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		3471	else if (w->interval)
		3472	periodic_recalc (EV_A_ w);
		3473
		3474	ANHE_at_cache (periodics [i]);
		3475	}
		3476
		3477	reheap (periodics, periodiccnt);
		3478	}
		3479	#endif
		3480
		3481	/* adjust all timers by a given offset */
		3482	noinline ecb_cold
		3483	static void
		3484	timers_reschedule (EV_P_ ev_tstamp adjust)
		3485	{
		3486	int i;
		3487
		3488	for (i = 0; i < timercnt; ++i)
		3489	{
		3490	ANHE *he = timers + i + HEAP0;
		3491	ANHE_w (*he)->at += adjust;
		3492	ANHE_at_cache (*he);
		3493	}
		3494	}
		3495
		3496	/* fetch new monotonic and realtime times from the kernel */
		3497	/* also detect if there was a timejump, and act accordingly */
		3498	inline_speed void
1461	time_update (EV_P_ ev_tstamp max_block)	3499	time_update (EV_P_ ev_tstamp max_block)
1462	{	3500	{
1463	int i;
1464
1465	#if EV_USE_MONOTONIC	3501	#if EV_USE_MONOTONIC
1466	if (expect_true (have_monotonic))	3502	if (expect_true (have_monotonic))
1467	{	3503	{
		3504	int i;
1468	ev_tstamp odiff = rtmn_diff;	3505	ev_tstamp odiff = rtmn_diff;
1469		3506
1470	mn_now = get_clock ();	3507	mn_now = get_clock ();
1471		3508
1472	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	3509	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1488	* doesn't hurt either as we only do this on time-jumps or	3525	* doesn't hurt either as we only do this on time-jumps or
1489	* in the unlikely event of having been preempted here.	3526	* in the unlikely event of having been preempted here.
1490	*/	3527	*/
1491	for (i = 4; --i; )	3528	for (i = 4; --i; )
1492	{	3529	{
		3530	ev_tstamp diff;
1493	rtmn_diff = ev_rt_now - mn_now;	3531	rtmn_diff = ev_rt_now - mn_now;
1494		3532
1495	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	3533	diff = odiff - rtmn_diff;
		3534
		3535	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1496	return; /* all is well */	3536	return; /* all is well */
1497		3537
1498	ev_rt_now = ev_time ();	3538	ev_rt_now = ev_time ();
1499	mn_now = get_clock ();	3539	mn_now = get_clock ();
1500	now_floor = mn_now;	3540	now_floor = mn_now;
1501	}	3541	}
1502		3542
		3543	/* no timer adjustment, as the monotonic clock doesn't jump */
		3544	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1503	# if EV_PERIODIC_ENABLE	3545	# if EV_PERIODIC_ENABLE
1504	periodics_reschedule (EV_A);	3546	periodics_reschedule (EV_A);
1505	# endif	3547	# endif
1506	/* no timer adjustment, as the monotonic clock doesn't jump */
1507	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1508	}	3548	}
1509	else	3549	else
1510	#endif	3550	#endif
1511	{	3551	{
1512	ev_rt_now = ev_time ();	3552	ev_rt_now = ev_time ();
1513		3553
1514	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	3554	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1515	{	3555	{
		3556	/* adjust timers. this is easy, as the offset is the same for all of them */
		3557	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1516	#if EV_PERIODIC_ENABLE	3558	#if EV_PERIODIC_ENABLE
1517	periodics_reschedule (EV_A);	3559	periodics_reschedule (EV_A);
1518	#endif	3560	#endif
1519	/* adjust timers. this is easy, as the offset is the same for all of them */
1520	for (i = 0; i < timercnt; ++i)
1521	((WT)timers [i])->at += ev_rt_now - mn_now;
1522	}	3561	}
1523		3562
1524	mn_now = ev_rt_now;	3563	mn_now = ev_rt_now;
1525	}	3564	}
1526	}	3565	}
1527		3566
1528	void	3567	int
1529	ev_ref (EV_P)
1530	{
1531	++activecnt;
1532	}
1533
1534	void
1535	ev_unref (EV_P)
1536	{
1537	--activecnt;
1538	}
1539
1540	static int loop_done;
1541
1542	void
1543	ev_loop (EV_P_ int flags)	3568	ev_run (EV_P_ int flags)
1544	{	3569	{
1545	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	3570	#if EV_FEATURE_API
1546	? EVUNLOOP_ONE	3571	++loop_depth;
1547	: EVUNLOOP_CANCEL;	3572	#endif
1548		3573
		3574	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		3575
		3576	loop_done = EVBREAK_CANCEL;
		3577
1549	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	3578	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1550		3579
1551	do	3580	do
1552	{	3581	{
		3582	#if EV_VERIFY >= 2
		3583	ev_verify (EV_A);
		3584	#endif
		3585
1553	#ifndef _WIN32	3586	#ifndef _WIN32
1554	if (expect_false (curpid)) /* penalise the forking check even more */	3587	if (expect_false (curpid)) /* penalise the forking check even more */
1555	if (expect_false (getpid () != curpid))	3588	if (expect_false (getpid () != curpid))
1556	{	3589	{
1557	curpid = getpid ();	3590	curpid = getpid ();
…		…
1563	/* we might have forked, so queue fork handlers */	3596	/* we might have forked, so queue fork handlers */
1564	if (expect_false (postfork))	3597	if (expect_false (postfork))
1565	if (forkcnt)	3598	if (forkcnt)
1566	{	3599	{
1567	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	3600	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1568	call_pending (EV_A);	3601	EV_INVOKE_PENDING;
1569	}	3602	}
1570	#endif	3603	#endif
1571		3604
		3605	#if EV_PREPARE_ENABLE
1572	/* queue prepare watchers (and execute them) */	3606	/* queue prepare watchers (and execute them) */
1573	if (expect_false (preparecnt))	3607	if (expect_false (preparecnt))
1574	{	3608	{
1575	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	3609	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1576	call_pending (EV_A);	3610	EV_INVOKE_PENDING;
1577	}	3611	}
		3612	#endif
1578		3613
1579	if (expect_false (!activecnt))	3614	if (expect_false (loop_done))
1580	break;	3615	break;
1581		3616
1582	/* we might have forked, so reify kernel state if necessary */	3617	/* we might have forked, so reify kernel state if necessary */
1583	if (expect_false (postfork))	3618	if (expect_false (postfork))
1584	loop_fork (EV_A);	3619	loop_fork (EV_A);
…		…
1589	/* calculate blocking time */	3624	/* calculate blocking time */
1590	{	3625	{
1591	ev_tstamp waittime = 0.;	3626	ev_tstamp waittime = 0.;
1592	ev_tstamp sleeptime = 0.;	3627	ev_tstamp sleeptime = 0.;
1593		3628
		3629	/* remember old timestamp for io_blocktime calculation */
		3630	ev_tstamp prev_mn_now = mn_now;
		3631
		3632	/* update time to cancel out callback processing overhead */
		3633	time_update (EV_A_ 1e100);
		3634
		3635	/* from now on, we want a pipe-wake-up */
		3636	pipe_write_wanted = 1;
		3637
		3638	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		3639
1594	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	3640	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1595	{	3641	{
1596	/* update time to cancel out callback processing overhead */
1597	time_update (EV_A_ 1e100);
1598
1599	waittime = MAX_BLOCKTIME;	3642	waittime = MAX_BLOCKTIME;
1600		3643
1601	if (timercnt)	3644	if (timercnt)
1602	{	3645	{
1603	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	3646	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1604	if (waittime > to) waittime = to;	3647	if (waittime > to) waittime = to;
1605	}	3648	}
1606		3649
1607	#if EV_PERIODIC_ENABLE	3650	#if EV_PERIODIC_ENABLE
1608	if (periodiccnt)	3651	if (periodiccnt)
1609	{	3652	{
1610	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	3653	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1611	if (waittime > to) waittime = to;	3654	if (waittime > to) waittime = to;
1612	}	3655	}
1613	#endif	3656	#endif
1614		3657
		3658	/* don't let timeouts decrease the waittime below timeout_blocktime */
1615	if (expect_false (waittime < timeout_blocktime))	3659	if (expect_false (waittime < timeout_blocktime))
1616	waittime = timeout_blocktime;	3660	waittime = timeout_blocktime;
1617		3661
1618	sleeptime = waittime - backend_fudge;	3662	/* at this point, we NEED to wait, so we have to ensure */
		3663	/* to pass a minimum nonzero value to the backend */
		3664	if (expect_false (waittime < backend_mintime))
		3665	waittime = backend_mintime;
1619		3666
		3667	/* extra check because io_blocktime is commonly 0 */
1620	if (expect_true (sleeptime > io_blocktime))	3668	if (expect_false (io_blocktime))
1621	sleeptime = io_blocktime;
1622
1623	if (sleeptime)
1624	{	3669	{
		3670	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		3671
		3672	if (sleeptime > waittime - backend_mintime)
		3673	sleeptime = waittime - backend_mintime;
		3674
		3675	if (expect_true (sleeptime > 0.))
		3676	{
1625	ev_sleep (sleeptime);	3677	ev_sleep (sleeptime);
1626	waittime -= sleeptime;	3678	waittime -= sleeptime;
		3679	}
1627	}	3680	}
1628	}	3681	}
1629		3682
		3683	#if EV_FEATURE_API
1630	++loop_count;	3684	++loop_count;
		3685	#endif
		3686	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1631	backend_poll (EV_A_ waittime);	3687	backend_poll (EV_A_ waittime);
		3688	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		3689
		3690	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
		3691
		3692	ECB_MEMORY_FENCE_ACQUIRE;
		3693	if (pipe_write_skipped)
		3694	{
		3695	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		3696	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		3697	}
		3698
1632		3699
1633	/* update ev_rt_now, do magic */	3700	/* update ev_rt_now, do magic */
1634	time_update (EV_A_ waittime + sleeptime);	3701	time_update (EV_A_ waittime + sleeptime);
1635	}	3702	}
1636		3703
…		…
1643	#if EV_IDLE_ENABLE	3710	#if EV_IDLE_ENABLE
1644	/* queue idle watchers unless other events are pending */	3711	/* queue idle watchers unless other events are pending */
1645	idle_reify (EV_A);	3712	idle_reify (EV_A);
1646	#endif	3713	#endif
1647		3714
		3715	#if EV_CHECK_ENABLE
1648	/* queue check watchers, to be executed first */	3716	/* queue check watchers, to be executed first */
1649	if (expect_false (checkcnt))	3717	if (expect_false (checkcnt))
1650	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	3718	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		3719	#endif
1651		3720
1652	call_pending (EV_A);	3721	EV_INVOKE_PENDING;
1653
1654	}	3722	}
1655	while (expect_true (activecnt && !loop_done));	3723	while (expect_true (
		3724	activecnt
		3725	&& !loop_done
		3726	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		3727	));
1656		3728
1657	if (loop_done == EVUNLOOP_ONE)	3729	if (loop_done == EVBREAK_ONE)
1658	loop_done = EVUNLOOP_CANCEL;	3730	loop_done = EVBREAK_CANCEL;
1659	}
1660		3731
		3732	#if EV_FEATURE_API
		3733	--loop_depth;
		3734	#endif
		3735
		3736	return activecnt;
		3737	}
		3738
1661	void	3739	void
1662	ev_unloop (EV_P_ int how)	3740	ev_break (EV_P_ int how) EV_THROW
1663	{	3741	{
1664	loop_done = how;	3742	loop_done = how;
1665	}	3743	}
1666		3744
		3745	void
		3746	ev_ref (EV_P) EV_THROW
		3747	{
		3748	++activecnt;
		3749	}
		3750
		3751	void
		3752	ev_unref (EV_P) EV_THROW
		3753	{
		3754	--activecnt;
		3755	}
		3756
		3757	void
		3758	ev_now_update (EV_P) EV_THROW
		3759	{
		3760	time_update (EV_A_ 1e100);
		3761	}
		3762
		3763	void
		3764	ev_suspend (EV_P) EV_THROW
		3765	{
		3766	ev_now_update (EV_A);
		3767	}
		3768
		3769	void
		3770	ev_resume (EV_P) EV_THROW
		3771	{
		3772	ev_tstamp mn_prev = mn_now;
		3773
		3774	ev_now_update (EV_A);
		3775	timers_reschedule (EV_A_ mn_now - mn_prev);
		3776	#if EV_PERIODIC_ENABLE
		3777	/* TODO: really do this? */
		3778	periodics_reschedule (EV_A);
		3779	#endif
		3780	}
		3781
1667	/*****************************************************************************/	3782	/*****************************************************************************/
		3783	/* singly-linked list management, used when the expected list length is short */
1668		3784
1669	void inline_size	3785	inline_size void
1670	wlist_add (WL *head, WL elem)	3786	wlist_add (WL *head, WL elem)
1671	{	3787	{
1672	elem->next = *head;	3788	elem->next = *head;
1673	*head = elem;	3789	*head = elem;
1674	}	3790	}
1675		3791
1676	void inline_size	3792	inline_size void
1677	wlist_del (WL *head, WL elem)	3793	wlist_del (WL *head, WL elem)
1678	{	3794	{
1679	while (*head)	3795	while (*head)
1680	{	3796	{
1681	if (*head == elem)	3797	if (expect_true (*head == elem))
1682	{	3798	{
1683	*head = elem->next;	3799	*head = elem->next;
1684	return;	3800	break;
1685	}	3801	}
1686		3802
1687	head = &(*head)->next;	3803	head = &(*head)->next;
1688	}	3804	}
1689	}	3805	}
1690		3806
1691	void inline_speed	3807	/* internal, faster, version of ev_clear_pending */
		3808	inline_speed void
1692	clear_pending (EV_P_ W w)	3809	clear_pending (EV_P_ W w)
1693	{	3810	{
1694	if (w->pending)	3811	if (w->pending)
1695	{	3812	{
1696	pendings [ABSPRI (w)][w->pending - 1].w = 0;	3813	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1697	w->pending = 0;	3814	w->pending = 0;
1698	}	3815	}
1699	}	3816	}
1700		3817
1701	int	3818	int
1702	ev_clear_pending (EV_P_ void *w)	3819	ev_clear_pending (EV_P_ void *w) EV_THROW
1703	{	3820	{
1704	W w_ = (W)w;	3821	W w_ = (W)w;
1705	int pending = w_->pending;	3822	int pending = w_->pending;
1706		3823
1707	if (expect_true (pending))	3824	if (expect_true (pending))
1708	{	3825	{
1709	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	3826	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		3827	p->w = (W)&pending_w;
1710	w_->pending = 0;	3828	w_->pending = 0;
1711	p->w = 0;
1712	return p->events;	3829	return p->events;
1713	}	3830	}
1714	else	3831	else
1715	return 0;	3832	return 0;
1716	}	3833	}
1717		3834
1718	void inline_size	3835	inline_size void
1719	pri_adjust (EV_P_ W w)	3836	pri_adjust (EV_P_ W w)
1720	{	3837	{
1721	int pri = w->priority;	3838	int pri = ev_priority (w);
1722	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	3839	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1723	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	3840	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1724	w->priority = pri;	3841	ev_set_priority (w, pri);
1725	}	3842	}
1726		3843
1727	void inline_speed	3844	inline_speed void
1728	ev_start (EV_P_ W w, int active)	3845	ev_start (EV_P_ W w, int active)
1729	{	3846	{
1730	pri_adjust (EV_A_ w);	3847	pri_adjust (EV_A_ w);
1731	w->active = active;	3848	w->active = active;
1732	ev_ref (EV_A);	3849	ev_ref (EV_A);
1733	}	3850	}
1734		3851
1735	void inline_size	3852	inline_size void
1736	ev_stop (EV_P_ W w)	3853	ev_stop (EV_P_ W w)
1737	{	3854	{
1738	ev_unref (EV_A);	3855	ev_unref (EV_A);
1739	w->active = 0;	3856	w->active = 0;
1740	}	3857	}
1741		3858
1742	/*****************************************************************************/	3859	/*****************************************************************************/
1743		3860
1744	void noinline	3861	noinline
		3862	void
1745	ev_io_start (EV_P_ ev_io *w)	3863	ev_io_start (EV_P_ ev_io *w) EV_THROW
1746	{	3864	{
1747	int fd = w->fd;	3865	int fd = w->fd;
1748		3866
1749	if (expect_false (ev_is_active (w)))	3867	if (expect_false (ev_is_active (w)))
1750	return;	3868	return;
1751		3869
1752	assert (("ev_io_start called with negative fd", fd >= 0));	3870	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		3871	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		3872
		3873	EV_FREQUENT_CHECK;
1753		3874
1754	ev_start (EV_A_ (W)w, 1);	3875	ev_start (EV_A_ (W)w, 1);
1755	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	3876	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1756	wlist_add (&anfds[fd].head, (WL)w);	3877	wlist_add (&anfds[fd].head, (WL)w);
1757		3878
		3879	/* common bug, apparently */
		3880	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
		3881
1758	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	3882	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1759	w->events &= ~EV_IOFDSET;	3883	w->events &= ~EV__IOFDSET;
1760	}
1761		3884
		3885	EV_FREQUENT_CHECK;
		3886	}
		3887
1762	void noinline	3888	noinline
		3889	void
1763	ev_io_stop (EV_P_ ev_io *w)	3890	ev_io_stop (EV_P_ ev_io *w) EV_THROW
1764	{	3891	{
1765	clear_pending (EV_A_ (W)w);	3892	clear_pending (EV_A_ (W)w);
1766	if (expect_false (!ev_is_active (w)))	3893	if (expect_false (!ev_is_active (w)))
1767	return;	3894	return;
1768		3895
1769	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	3896	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		3897
		3898	EV_FREQUENT_CHECK;
1770		3899
1771	wlist_del (&anfds[w->fd].head, (WL)w);	3900	wlist_del (&anfds[w->fd].head, (WL)w);
1772	ev_stop (EV_A_ (W)w);	3901	ev_stop (EV_A_ (W)w);
1773		3902
1774	fd_change (EV_A_ w->fd, 1);	3903	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
1775	}
1776		3904
		3905	EV_FREQUENT_CHECK;
		3906	}
		3907
1777	void noinline	3908	noinline
		3909	void
1778	ev_timer_start (EV_P_ ev_timer *w)	3910	ev_timer_start (EV_P_ ev_timer *w) EV_THROW
1779	{	3911	{
1780	if (expect_false (ev_is_active (w)))	3912	if (expect_false (ev_is_active (w)))
1781	return;	3913	return;
1782		3914
1783	((WT)w)->at += mn_now;	3915	ev_at (w) += mn_now;
1784		3916
1785	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	3917	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1786		3918
		3919	EV_FREQUENT_CHECK;
		3920
		3921	++timercnt;
1787	ev_start (EV_A_ (W)w, ++timercnt);	3922	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1788	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	3923	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1789	timers [timercnt - 1] = (WT)w;	3924	ANHE_w (timers [ev_active (w)]) = (WT)w;
1790	upheap (timers, timercnt - 1);	3925	ANHE_at_cache (timers [ev_active (w)]);
		3926	upheap (timers, ev_active (w));
1791		3927
		3928	EV_FREQUENT_CHECK;
		3929
1792	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	3930	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1793	}	3931	}
1794		3932
1795	void noinline	3933	noinline
		3934	void
1796	ev_timer_stop (EV_P_ ev_timer *w)	3935	ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
1797	{	3936	{
1798	clear_pending (EV_A_ (W)w);	3937	clear_pending (EV_A_ (W)w);
1799	if (expect_false (!ev_is_active (w)))	3938	if (expect_false (!ev_is_active (w)))
1800	return;	3939	return;
1801		3940
1802	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	3941	EV_FREQUENT_CHECK;
1803		3942
1804	{	3943	{
1805	int active = ((W)w)->active;	3944	int active = ev_active (w);
1806		3945
		3946	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		3947
		3948	--timercnt;
		3949
1807	if (expect_true (--active < --timercnt))	3950	if (expect_true (active < timercnt + HEAP0))
1808	{	3951	{
1809	timers [active] = timers [timercnt];	3952	timers [active] = timers [timercnt + HEAP0];
1810	adjustheap (timers, timercnt, active);	3953	adjustheap (timers, timercnt, active);
1811	}	3954	}
1812	}	3955	}
1813		3956
1814	((WT)w)->at -= mn_now;	3957	ev_at (w) -= mn_now;
1815		3958
1816	ev_stop (EV_A_ (W)w);	3959	ev_stop (EV_A_ (W)w);
1817	}
1818		3960
		3961	EV_FREQUENT_CHECK;
		3962	}
		3963
1819	void noinline	3964	noinline
		3965	void
1820	ev_timer_again (EV_P_ ev_timer *w)	3966	ev_timer_again (EV_P_ ev_timer *w) EV_THROW
1821	{	3967	{
		3968	EV_FREQUENT_CHECK;
		3969
		3970	clear_pending (EV_A_ (W)w);
		3971
1822	if (ev_is_active (w))	3972	if (ev_is_active (w))
1823	{	3973	{
1824	if (w->repeat)	3974	if (w->repeat)
1825	{	3975	{
1826	((WT)w)->at = mn_now + w->repeat;	3976	ev_at (w) = mn_now + w->repeat;
		3977	ANHE_at_cache (timers [ev_active (w)]);
1827	adjustheap (timers, timercnt, ((W)w)->active - 1);	3978	adjustheap (timers, timercnt, ev_active (w));
1828	}	3979	}
1829	else	3980	else
1830	ev_timer_stop (EV_A_ w);	3981	ev_timer_stop (EV_A_ w);
1831	}	3982	}
1832	else if (w->repeat)	3983	else if (w->repeat)
1833	{	3984	{
1834	w->at = w->repeat;	3985	ev_at (w) = w->repeat;
1835	ev_timer_start (EV_A_ w);	3986	ev_timer_start (EV_A_ w);
1836	}	3987	}
		3988
		3989	EV_FREQUENT_CHECK;
		3990	}
		3991
		3992	ev_tstamp
		3993	ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
		3994	{
		3995	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1837	}	3996	}
1838		3997
1839	#if EV_PERIODIC_ENABLE	3998	#if EV_PERIODIC_ENABLE
1840	void noinline	3999	noinline
		4000	void
1841	ev_periodic_start (EV_P_ ev_periodic *w)	4001	ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
1842	{	4002	{
1843	if (expect_false (ev_is_active (w)))	4003	if (expect_false (ev_is_active (w)))
1844	return;	4004	return;
1845		4005
1846	if (w->reschedule_cb)	4006	if (w->reschedule_cb)
1847	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	4007	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1848	else if (w->interval)	4008	else if (w->interval)
1849	{	4009	{
1850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	4010	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1851	/* this formula differs from the one in periodic_reify because we do not always round up */	4011	periodic_recalc (EV_A_ w);
1852	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1853	}	4012	}
1854	else	4013	else
1855	((WT)w)->at = w->offset;	4014	ev_at (w) = w->offset;
1856		4015
		4016	EV_FREQUENT_CHECK;
		4017
		4018	++periodiccnt;
1857	ev_start (EV_A_ (W)w, ++periodiccnt);	4019	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1858	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	4020	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1859	periodics [periodiccnt - 1] = (WT)w;	4021	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1860	upheap (periodics, periodiccnt - 1);	4022	ANHE_at_cache (periodics [ev_active (w)]);
		4023	upheap (periodics, ev_active (w));
1861		4024
		4025	EV_FREQUENT_CHECK;
		4026
1862	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	4027	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1863	}	4028	}
1864		4029
1865	void noinline	4030	noinline
		4031	void
1866	ev_periodic_stop (EV_P_ ev_periodic *w)	4032	ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
1867	{	4033	{
1868	clear_pending (EV_A_ (W)w);	4034	clear_pending (EV_A_ (W)w);
1869	if (expect_false (!ev_is_active (w)))	4035	if (expect_false (!ev_is_active (w)))
1870	return;	4036	return;
1871		4037
1872	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	4038	EV_FREQUENT_CHECK;
1873		4039
1874	{	4040	{
1875	int active = ((W)w)->active;	4041	int active = ev_active (w);
1876		4042
		4043	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		4044
		4045	--periodiccnt;
		4046
1877	if (expect_true (--active < --periodiccnt))	4047	if (expect_true (active < periodiccnt + HEAP0))
1878	{	4048	{
1879	periodics [active] = periodics [periodiccnt];	4049	periodics [active] = periodics [periodiccnt + HEAP0];
1880	adjustheap (periodics, periodiccnt, active);	4050	adjustheap (periodics, periodiccnt, active);
1881	}	4051	}
1882	}	4052	}
1883		4053
1884	ev_stop (EV_A_ (W)w);	4054	ev_stop (EV_A_ (W)w);
1885	}
1886		4055
		4056	EV_FREQUENT_CHECK;
		4057	}
		4058
1887	void noinline	4059	noinline
		4060	void
1888	ev_periodic_again (EV_P_ ev_periodic *w)	4061	ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
1889	{	4062	{
1890	/* TODO: use adjustheap and recalculation */	4063	/* TODO: use adjustheap and recalculation */
1891	ev_periodic_stop (EV_A_ w);	4064	ev_periodic_stop (EV_A_ w);
1892	ev_periodic_start (EV_A_ w);	4065	ev_periodic_start (EV_A_ w);
1893	}	4066	}
…		…
1895		4068
1896	#ifndef SA_RESTART	4069	#ifndef SA_RESTART
1897	# define SA_RESTART 0	4070	# define SA_RESTART 0
1898	#endif	4071	#endif
1899		4072
		4073	#if EV_SIGNAL_ENABLE
		4074
1900	void noinline	4075	noinline
		4076	void
1901	ev_signal_start (EV_P_ ev_signal *w)	4077	ev_signal_start (EV_P_ ev_signal *w) EV_THROW
1902	{	4078	{
1903	#if EV_MULTIPLICITY
1904	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1905	#endif
1906	if (expect_false (ev_is_active (w)))	4079	if (expect_false (ev_is_active (w)))
1907	return;	4080	return;
1908		4081
1909	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	4082	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1910		4083
1911	evpipe_init (EV_A);	4084	#if EV_MULTIPLICITY
		4085	assert (("libev: a signal must not be attached to two different loops",
		4086	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1912		4087
		4088	signals [w->signum - 1].loop = EV_A;
		4089	ECB_MEMORY_FENCE_RELEASE;
		4090	#endif
		4091
		4092	EV_FREQUENT_CHECK;
		4093
		4094	#if EV_USE_SIGNALFD
		4095	if (sigfd == -2)
1913	{	4096	{
1914	#ifndef _WIN32	4097	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1915	sigset_t full, prev;	4098	if (sigfd < 0 && errno == EINVAL)
1916	sigfillset (&full);	4099	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1917	sigprocmask (SIG_SETMASK, &full, &prev);
1918	#endif
1919		4100
1920	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	4101	if (sigfd >= 0)
		4102	{
		4103	fd_intern (sigfd); /* doing it twice will not hurt */
1921		4104
1922	#ifndef _WIN32	4105	sigemptyset (&sigfd_set);
1923	sigprocmask (SIG_SETMASK, &prev, 0);	4106
1924	#endif	4107	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		4108	ev_set_priority (&sigfd_w, EV_MAXPRI);
		4109	ev_io_start (EV_A_ &sigfd_w);
		4110	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		4111	}
1925	}	4112	}
		4113
		4114	if (sigfd >= 0)
		4115	{
		4116	/* TODO: check .head */
		4117	sigaddset (&sigfd_set, w->signum);
		4118	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		4119
		4120	signalfd (sigfd, &sigfd_set, 0);
		4121	}
		4122	#endif
1926		4123
1927	ev_start (EV_A_ (W)w, 1);	4124	ev_start (EV_A_ (W)w, 1);
1928	wlist_add (&signals [w->signum - 1].head, (WL)w);	4125	wlist_add (&signals [w->signum - 1].head, (WL)w);
1929		4126
1930	if (!((WL)w)->next)	4127	if (!((WL)w)->next)
		4128	# if EV_USE_SIGNALFD
		4129	if (sigfd < 0) /*TODO*/
		4130	# endif
1931	{	4131	{
1932	#if _WIN32	4132	# ifdef _WIN32
		4133	evpipe_init (EV_A);
		4134
1933	signal (w->signum, sighandler);	4135	signal (w->signum, ev_sighandler);
1934	#else	4136	# else
1935	struct sigaction sa;	4137	struct sigaction sa;
		4138
		4139	evpipe_init (EV_A);
		4140
1936	sa.sa_handler = sighandler;	4141	sa.sa_handler = ev_sighandler;
1937	sigfillset (&sa.sa_mask);	4142	sigfillset (&sa.sa_mask);
1938	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	4143	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1939	sigaction (w->signum, &sa, 0);	4144	sigaction (w->signum, &sa, 0);
		4145
		4146	if (origflags & EVFLAG_NOSIGMASK)
		4147	{
		4148	sigemptyset (&sa.sa_mask);
		4149	sigaddset (&sa.sa_mask, w->signum);
		4150	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		4151	}
1940	#endif	4152	#endif
1941	}	4153	}
1942	}
1943		4154
		4155	EV_FREQUENT_CHECK;
		4156	}
		4157
1944	void noinline	4158	noinline
		4159	void
1945	ev_signal_stop (EV_P_ ev_signal *w)	4160	ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
1946	{	4161	{
1947	clear_pending (EV_A_ (W)w);	4162	clear_pending (EV_A_ (W)w);
1948	if (expect_false (!ev_is_active (w)))	4163	if (expect_false (!ev_is_active (w)))
1949	return;	4164	return;
1950		4165
		4166	EV_FREQUENT_CHECK;
		4167
1951	wlist_del (&signals [w->signum - 1].head, (WL)w);	4168	wlist_del (&signals [w->signum - 1].head, (WL)w);
1952	ev_stop (EV_A_ (W)w);	4169	ev_stop (EV_A_ (W)w);
1953		4170
1954	if (!signals [w->signum - 1].head)	4171	if (!signals [w->signum - 1].head)
1955	signal (w->signum, SIG_DFL);	4172	{
1956	}
1957
1958	void
1959	ev_child_start (EV_P_ ev_child *w)
1960	{
1961	#if EV_MULTIPLICITY	4173	#if EV_MULTIPLICITY
		4174	signals [w->signum - 1].loop = 0; /* unattach from signal */
		4175	#endif
		4176	#if EV_USE_SIGNALFD
		4177	if (sigfd >= 0)
		4178	{
		4179	sigset_t ss;
		4180
		4181	sigemptyset (&ss);
		4182	sigaddset (&ss, w->signum);
		4183	sigdelset (&sigfd_set, w->signum);
		4184
		4185	signalfd (sigfd, &sigfd_set, 0);
		4186	sigprocmask (SIG_UNBLOCK, &ss, 0);
		4187	}
		4188	else
		4189	#endif
		4190	signal (w->signum, SIG_DFL);
		4191	}
		4192
		4193	EV_FREQUENT_CHECK;
		4194	}
		4195
		4196	#endif
		4197
		4198	#if EV_CHILD_ENABLE
		4199
		4200	void
		4201	ev_child_start (EV_P_ ev_child *w) EV_THROW
		4202	{
		4203	#if EV_MULTIPLICITY
1962	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	4204	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1963	#endif	4205	#endif
1964	if (expect_false (ev_is_active (w)))	4206	if (expect_false (ev_is_active (w)))
1965	return;	4207	return;
1966		4208
		4209	EV_FREQUENT_CHECK;
		4210
1967	ev_start (EV_A_ (W)w, 1);	4211	ev_start (EV_A_ (W)w, 1);
1968	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	4212	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1969	}
1970		4213
		4214	EV_FREQUENT_CHECK;
		4215	}
		4216
1971	void	4217	void
1972	ev_child_stop (EV_P_ ev_child *w)	4218	ev_child_stop (EV_P_ ev_child *w) EV_THROW
1973	{	4219	{
1974	clear_pending (EV_A_ (W)w);	4220	clear_pending (EV_A_ (W)w);
1975	if (expect_false (!ev_is_active (w)))	4221	if (expect_false (!ev_is_active (w)))
1976	return;	4222	return;
1977		4223
		4224	EV_FREQUENT_CHECK;
		4225
1978	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	4226	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1979	ev_stop (EV_A_ (W)w);	4227	ev_stop (EV_A_ (W)w);
		4228
		4229	EV_FREQUENT_CHECK;
1980	}	4230	}
		4231
		4232	#endif
1981		4233
1982	#if EV_STAT_ENABLE	4234	#if EV_STAT_ENABLE
1983		4235
1984	# ifdef _WIN32	4236	# ifdef _WIN32
1985	# undef lstat	4237	# undef lstat
1986	# define lstat(a,b) _stati64 (a,b)	4238	# define lstat(a,b) _stati64 (a,b)
1987	# endif	4239	# endif
1988		4240
1989	#define DEF_STAT_INTERVAL 5.0074891	4241	#define DEF_STAT_INTERVAL 5.0074891
		4242	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1990	#define MIN_STAT_INTERVAL 0.1074891	4243	#define MIN_STAT_INTERVAL 0.1074891
1991		4244
1992	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	4245	noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1993		4246
1994	#if EV_USE_INOTIFY	4247	#if EV_USE_INOTIFY
1995	# define EV_INOTIFY_BUFSIZE 8192
1996		4248
1997	static void noinline	4249	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		4250	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
		4251
		4252	noinline
		4253	static void
1998	infy_add (EV_P_ ev_stat *w)	4254	infy_add (EV_P_ ev_stat *w)
1999	{	4255	{
2000	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);	4256	w->wd = inotify_add_watch (fs_fd, w->path,
		4257	IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
		4258	| IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
		4259	| IN_DONT_FOLLOW | IN_MASK_ADD);
2001		4260
2002	if (w->wd < 0)	4261	if (w->wd >= 0)
		4262	{
		4263	struct statfs sfs;
		4264
		4265	/* now local changes will be tracked by inotify, but remote changes won't */
		4266	/* unless the filesystem is known to be local, we therefore still poll */
		4267	/* also do poll on <2.6.25, but with normal frequency */
		4268
		4269	if (!fs_2625)
		4270	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		4271	else if (!statfs (w->path, &sfs)
		4272	&& (sfs.f_type == 0x1373 /* devfs */
		4273	|| sfs.f_type == 0x4006 /* fat */
		4274	|| sfs.f_type == 0x4d44 /* msdos */
		4275	|| sfs.f_type == 0xEF53 /* ext2/3 */
		4276	|| sfs.f_type == 0x72b6 /* jffs2 */
		4277	|| sfs.f_type == 0x858458f6 /* ramfs */
		4278	|| sfs.f_type == 0x5346544e /* ntfs */
		4279	|| sfs.f_type == 0x3153464a /* jfs */
		4280	|| sfs.f_type == 0x9123683e /* btrfs */
		4281	|| sfs.f_type == 0x52654973 /* reiser3 */
		4282	|| sfs.f_type == 0x01021994 /* tmpfs */
		4283	|| sfs.f_type == 0x58465342 /* xfs */))
		4284	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		4285	else
		4286	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2003	{	4287	}
2004	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	4288	else
		4289	{
		4290	/* can't use inotify, continue to stat */
		4291	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2005		4292
2006	/* monitor some parent directory for speedup hints */	4293	/* if path is not there, monitor some parent directory for speedup hints */
		4294	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		4295	/* but an efficiency issue only */
2007	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	4296	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2008	{	4297	{
2009	char path [4096];	4298	char path [4096];
2010	strcpy (path, w->path);	4299	strcpy (path, w->path);
2011		4300
…		…
2014	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	4303	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2015	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	4304	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2016		4305
2017	char *pend = strrchr (path, '/');	4306	char *pend = strrchr (path, '/');
2018		4307
2019	if (!pend)	4308	if (!pend || pend == path)
2020	break; /* whoops, no '/', complain to your admin */	4309	break;
2021		4310
2022	*pend = 0;	4311	*pend = 0;
2023	w->wd = inotify_add_watch (fs_fd, path, mask);	4312	w->wd = inotify_add_watch (fs_fd, path, mask);
2024	}	4313	}
2025	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	4314	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2026	}	4315	}
2027	}	4316	}
2028	else
2029	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2030		4317
2031	if (w->wd >= 0)	4318	if (w->wd >= 0)
2032	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	4319	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2033	}
2034		4320
2035	static void noinline	4321	/* now re-arm timer, if required */
		4322	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		4323	ev_timer_again (EV_A_ &w->timer);
		4324	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		4325	}
		4326
		4327	noinline
		4328	static void
2036	infy_del (EV_P_ ev_stat *w)	4329	infy_del (EV_P_ ev_stat *w)
2037	{	4330	{
2038	int slot;	4331	int slot;
2039	int wd = w->wd;	4332	int wd = w->wd;
2040		4333
2041	if (wd < 0)	4334	if (wd < 0)
2042	return;	4335	return;
2043		4336
2044	w->wd = -2;	4337	w->wd = -2;
2045	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	4338	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2046	wlist_del (&fs_hash [slot].head, (WL)w);	4339	wlist_del (&fs_hash [slot].head, (WL)w);
2047		4340
2048	/* remove this watcher, if others are watching it, they will rearm */	4341	/* remove this watcher, if others are watching it, they will rearm */
2049	inotify_rm_watch (fs_fd, wd);	4342	inotify_rm_watch (fs_fd, wd);
2050	}	4343	}
2051		4344
2052	static void noinline	4345	noinline
		4346	static void
2053	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	4347	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2054	{	4348	{
2055	if (slot < 0)	4349	if (slot < 0)
2056	/* overflow, need to check for all hahs slots */	4350	/* overflow, need to check for all hash slots */
2057	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	4351	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2058	infy_wd (EV_A_ slot, wd, ev);	4352	infy_wd (EV_A_ slot, wd, ev);
2059	else	4353	else
2060	{	4354	{
2061	WL w_;	4355	WL w_;
2062		4356
2063	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	4357	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2064	{	4358	{
2065	ev_stat *w = (ev_stat *)w_;	4359	ev_stat *w = (ev_stat *)w_;
2066	w_ = w_->next; /* lets us remove this watcher and all before it */	4360	w_ = w_->next; /* lets us remove this watcher and all before it */
2067		4361
2068	if (w->wd == wd || wd == -1)	4362	if (w->wd == wd || wd == -1)
2069	{	4363	{
2070	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	4364	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2071	{	4365	{
		4366	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2072	w->wd = -1;	4367	w->wd = -1;
2073	infy_add (EV_A_ w); /* re-add, no matter what */	4368	infy_add (EV_A_ w); /* re-add, no matter what */
2074	}	4369	}
2075		4370
2076	stat_timer_cb (EV_A_ &w->timer, 0);	4371	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2081		4376
2082	static void	4377	static void
2083	infy_cb (EV_P_ ev_io *w, int revents)	4378	infy_cb (EV_P_ ev_io *w, int revents)
2084	{	4379	{
2085	char buf [EV_INOTIFY_BUFSIZE];	4380	char buf [EV_INOTIFY_BUFSIZE];
2086	struct inotify_event *ev = (struct inotify_event *)buf;
2087	int ofs;	4381	int ofs;
2088	int len = read (fs_fd, buf, sizeof (buf));	4382	int len = read (fs_fd, buf, sizeof (buf));
2089		4383
2090	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	4384	for (ofs = 0; ofs < len; )
		4385	{
		4386	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2091	infy_wd (EV_A_ ev->wd, ev->wd, ev);	4387	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		4388	ofs += sizeof (struct inotify_event) + ev->len;
		4389	}
2092	}	4390	}
2093		4391
2094	void inline_size	4392	inline_size ecb_cold
		4393	void
		4394	ev_check_2625 (EV_P)
		4395	{
		4396	/* kernels < 2.6.25 are borked
		4397	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		4398	*/
		4399	if (ev_linux_version () < 0x020619)
		4400	return;
		4401
		4402	fs_2625 = 1;
		4403	}
		4404
		4405	inline_size int
		4406	infy_newfd (void)
		4407	{
		4408	#if defined IN_CLOEXEC && defined IN_NONBLOCK
		4409	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		4410	if (fd >= 0)
		4411	return fd;
		4412	#endif
		4413	return inotify_init ();
		4414	}
		4415
		4416	inline_size void
2095	infy_init (EV_P)	4417	infy_init (EV_P)
2096	{	4418	{
2097	if (fs_fd != -2)	4419	if (fs_fd != -2)
2098	return;	4420	return;
2099		4421
		4422	fs_fd = -1;
		4423
		4424	ev_check_2625 (EV_A);
		4425
2100	fs_fd = inotify_init ();	4426	fs_fd = infy_newfd ();
2101		4427
2102	if (fs_fd >= 0)	4428	if (fs_fd >= 0)
2103	{	4429	{
		4430	fd_intern (fs_fd);
2104	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	4431	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2105	ev_set_priority (&fs_w, EV_MAXPRI);	4432	ev_set_priority (&fs_w, EV_MAXPRI);
2106	ev_io_start (EV_A_ &fs_w);	4433	ev_io_start (EV_A_ &fs_w);
		4434	ev_unref (EV_A);
2107	}	4435	}
2108	}	4436	}
2109		4437
2110	void inline_size	4438	inline_size void
2111	infy_fork (EV_P)	4439	infy_fork (EV_P)
2112	{	4440	{
2113	int slot;	4441	int slot;
2114		4442
2115	if (fs_fd < 0)	4443	if (fs_fd < 0)
2116	return;	4444	return;
2117		4445
		4446	ev_ref (EV_A);
		4447	ev_io_stop (EV_A_ &fs_w);
2118	close (fs_fd);	4448	close (fs_fd);
2119	fs_fd = inotify_init ();	4449	fs_fd = infy_newfd ();
2120		4450
		4451	if (fs_fd >= 0)
		4452	{
		4453	fd_intern (fs_fd);
		4454	ev_io_set (&fs_w, fs_fd, EV_READ);
		4455	ev_io_start (EV_A_ &fs_w);
		4456	ev_unref (EV_A);
		4457	}
		4458
2121	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	4459	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2122	{	4460	{
2123	WL w_ = fs_hash [slot].head;	4461	WL w_ = fs_hash [slot].head;
2124	fs_hash [slot].head = 0;	4462	fs_hash [slot].head = 0;
2125		4463
2126	while (w_)	4464	while (w_)
…		…
2131	w->wd = -1;	4469	w->wd = -1;
2132		4470
2133	if (fs_fd >= 0)	4471	if (fs_fd >= 0)
2134	infy_add (EV_A_ w); /* re-add, no matter what */	4472	infy_add (EV_A_ w); /* re-add, no matter what */
2135	else	4473	else
		4474	{
		4475	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		4476	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2136	ev_timer_start (EV_A_ &w->timer);	4477	ev_timer_again (EV_A_ &w->timer);
		4478	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		4479	}
2137	}	4480	}
2138
2139	}	4481	}
2140	}	4482	}
2141		4483
2142	#endif	4484	#endif
2143		4485
		4486	#ifdef _WIN32
		4487	# define EV_LSTAT(p,b) _stati64 (p, b)
		4488	#else
		4489	# define EV_LSTAT(p,b) lstat (p, b)
		4490	#endif
		4491
2144	void	4492	void
2145	ev_stat_stat (EV_P_ ev_stat *w)	4493	ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2146	{	4494	{
2147	if (lstat (w->path, &w->attr) < 0)	4495	if (lstat (w->path, &w->attr) < 0)
2148	w->attr.st_nlink = 0;	4496	w->attr.st_nlink = 0;
2149	else if (!w->attr.st_nlink)	4497	else if (!w->attr.st_nlink)
2150	w->attr.st_nlink = 1;	4498	w->attr.st_nlink = 1;
2151	}	4499	}
2152		4500
2153	static void noinline	4501	noinline
		4502	static void
2154	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	4503	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2155	{	4504	{
2156	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	4505	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2157		4506
2158	/* we copy this here each the time so that */	4507	ev_statdata prev = w->attr;
2159	/* prev has the old value when the callback gets invoked */
2160	w->prev = w->attr;
2161	ev_stat_stat (EV_A_ w);	4508	ev_stat_stat (EV_A_ w);
2162		4509
2163	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	4510	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2164	if (	4511	if (
2165	w->prev.st_dev != w->attr.st_dev	4512	prev.st_dev != w->attr.st_dev
2166	|| w->prev.st_ino != w->attr.st_ino	4513	|| prev.st_ino != w->attr.st_ino
2167	|| w->prev.st_mode != w->attr.st_mode	4514	|| prev.st_mode != w->attr.st_mode
2168	|| w->prev.st_nlink != w->attr.st_nlink	4515	|| prev.st_nlink != w->attr.st_nlink
2169	|| w->prev.st_uid != w->attr.st_uid	4516	|| prev.st_uid != w->attr.st_uid
2170	|| w->prev.st_gid != w->attr.st_gid	4517	|| prev.st_gid != w->attr.st_gid
2171	|| w->prev.st_rdev != w->attr.st_rdev	4518	|| prev.st_rdev != w->attr.st_rdev
2172	|| w->prev.st_size != w->attr.st_size	4519	|| prev.st_size != w->attr.st_size
2173	|| w->prev.st_atime != w->attr.st_atime	4520	|| prev.st_atime != w->attr.st_atime
2174	|| w->prev.st_mtime != w->attr.st_mtime	4521	|| prev.st_mtime != w->attr.st_mtime
2175	|| w->prev.st_ctime != w->attr.st_ctime	4522	|| prev.st_ctime != w->attr.st_ctime
2176	) {	4523	) {
		4524	/* we only update w->prev on actual differences */
		4525	/* in case we test more often than invoke the callback, */
		4526	/* to ensure that prev is always different to attr */
		4527	w->prev = prev;
		4528
2177	#if EV_USE_INOTIFY	4529	#if EV_USE_INOTIFY
		4530	if (fs_fd >= 0)
		4531	{
2178	infy_del (EV_A_ w);	4532	infy_del (EV_A_ w);
2179	infy_add (EV_A_ w);	4533	infy_add (EV_A_ w);
2180	ev_stat_stat (EV_A_ w); /* avoid race... */	4534	ev_stat_stat (EV_A_ w); /* avoid race... */
		4535	}
2181	#endif	4536	#endif
2182		4537
2183	ev_feed_event (EV_A_ w, EV_STAT);	4538	ev_feed_event (EV_A_ w, EV_STAT);
2184	}	4539	}
2185	}	4540	}
2186		4541
2187	void	4542	void
2188	ev_stat_start (EV_P_ ev_stat *w)	4543	ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2189	{	4544	{
2190	if (expect_false (ev_is_active (w)))	4545	if (expect_false (ev_is_active (w)))
2191	return;	4546	return;
2192		4547
2193	/* since we use memcmp, we need to clear any padding data etc. */
2194	memset (&w->prev, 0, sizeof (ev_statdata));
2195	memset (&w->attr, 0, sizeof (ev_statdata));
2196
2197	ev_stat_stat (EV_A_ w);	4548	ev_stat_stat (EV_A_ w);
2198		4549
		4550	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2199	if (w->interval < MIN_STAT_INTERVAL)	4551	w->interval = MIN_STAT_INTERVAL;
2200	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2201		4552
2202	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	4553	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2203	ev_set_priority (&w->timer, ev_priority (w));	4554	ev_set_priority (&w->timer, ev_priority (w));
2204		4555
2205	#if EV_USE_INOTIFY	4556	#if EV_USE_INOTIFY
2206	infy_init (EV_A);	4557	infy_init (EV_A);
2207		4558
2208	if (fs_fd >= 0)	4559	if (fs_fd >= 0)
2209	infy_add (EV_A_ w);	4560	infy_add (EV_A_ w);
2210	else	4561	else
2211	#endif	4562	#endif
		4563	{
2212	ev_timer_start (EV_A_ &w->timer);	4564	ev_timer_again (EV_A_ &w->timer);
		4565	ev_unref (EV_A);
		4566	}
2213		4567
2214	ev_start (EV_A_ (W)w, 1);	4568	ev_start (EV_A_ (W)w, 1);
2215	}
2216		4569
		4570	EV_FREQUENT_CHECK;
		4571	}
		4572
2217	void	4573	void
2218	ev_stat_stop (EV_P_ ev_stat *w)	4574	ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2219	{	4575	{
2220	clear_pending (EV_A_ (W)w);	4576	clear_pending (EV_A_ (W)w);
2221	if (expect_false (!ev_is_active (w)))	4577	if (expect_false (!ev_is_active (w)))
2222	return;	4578	return;
2223		4579
		4580	EV_FREQUENT_CHECK;
		4581
2224	#if EV_USE_INOTIFY	4582	#if EV_USE_INOTIFY
2225	infy_del (EV_A_ w);	4583	infy_del (EV_A_ w);
2226	#endif	4584	#endif
		4585
		4586	if (ev_is_active (&w->timer))
		4587	{
		4588	ev_ref (EV_A);
2227	ev_timer_stop (EV_A_ &w->timer);	4589	ev_timer_stop (EV_A_ &w->timer);
		4590	}
2228		4591
2229	ev_stop (EV_A_ (W)w);	4592	ev_stop (EV_A_ (W)w);
		4593
		4594	EV_FREQUENT_CHECK;
2230	}	4595	}
2231	#endif	4596	#endif
2232		4597
2233	#if EV_IDLE_ENABLE	4598	#if EV_IDLE_ENABLE
2234	void	4599	void
2235	ev_idle_start (EV_P_ ev_idle *w)	4600	ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2236	{	4601	{
2237	if (expect_false (ev_is_active (w)))	4602	if (expect_false (ev_is_active (w)))
2238	return;	4603	return;
2239		4604
2240	pri_adjust (EV_A_ (W)w);	4605	pri_adjust (EV_A_ (W)w);
		4606
		4607	EV_FREQUENT_CHECK;
2241		4608
2242	{	4609	{
2243	int active = ++idlecnt [ABSPRI (w)];	4610	int active = ++idlecnt [ABSPRI (w)];
2244		4611
2245	++idleall;	4612	++idleall;
2246	ev_start (EV_A_ (W)w, active);	4613	ev_start (EV_A_ (W)w, active);
2247		4614
2248	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	4615	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2249	idles [ABSPRI (w)][active - 1] = w;	4616	idles [ABSPRI (w)][active - 1] = w;
2250	}	4617	}
2251	}
2252		4618
		4619	EV_FREQUENT_CHECK;
		4620	}
		4621
2253	void	4622	void
2254	ev_idle_stop (EV_P_ ev_idle *w)	4623	ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2255	{	4624	{
2256	clear_pending (EV_A_ (W)w);	4625	clear_pending (EV_A_ (W)w);
2257	if (expect_false (!ev_is_active (w)))	4626	if (expect_false (!ev_is_active (w)))
2258	return;	4627	return;
2259		4628
		4629	EV_FREQUENT_CHECK;
		4630
2260	{	4631	{
2261	int active = ((W)w)->active;	4632	int active = ev_active (w);
2262		4633
2263	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	4634	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2264	((W)idles [ABSPRI (w)][active - 1])->active = active;	4635	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2265		4636
2266	ev_stop (EV_A_ (W)w);	4637	ev_stop (EV_A_ (W)w);
2267	--idleall;	4638	--idleall;
2268	}	4639	}
2269	}
2270	#endif
2271		4640
		4641	EV_FREQUENT_CHECK;
		4642	}
		4643	#endif
		4644
		4645	#if EV_PREPARE_ENABLE
2272	void	4646	void
2273	ev_prepare_start (EV_P_ ev_prepare *w)	4647	ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2274	{	4648	{
2275	if (expect_false (ev_is_active (w)))	4649	if (expect_false (ev_is_active (w)))
2276	return;	4650	return;
		4651
		4652	EV_FREQUENT_CHECK;
2277		4653
2278	ev_start (EV_A_ (W)w, ++preparecnt);	4654	ev_start (EV_A_ (W)w, ++preparecnt);
2279	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	4655	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2280	prepares [preparecnt - 1] = w;	4656	prepares [preparecnt - 1] = w;
2281	}
2282		4657
		4658	EV_FREQUENT_CHECK;
		4659	}
		4660
2283	void	4661	void
2284	ev_prepare_stop (EV_P_ ev_prepare *w)	4662	ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2285	{	4663	{
2286	clear_pending (EV_A_ (W)w);	4664	clear_pending (EV_A_ (W)w);
2287	if (expect_false (!ev_is_active (w)))	4665	if (expect_false (!ev_is_active (w)))
2288	return;	4666	return;
2289		4667
		4668	EV_FREQUENT_CHECK;
		4669
2290	{	4670	{
2291	int active = ((W)w)->active;	4671	int active = ev_active (w);
		4672
2292	prepares [active - 1] = prepares [--preparecnt];	4673	prepares [active - 1] = prepares [--preparecnt];
2293	((W)prepares [active - 1])->active = active;	4674	ev_active (prepares [active - 1]) = active;
2294	}	4675	}
2295		4676
2296	ev_stop (EV_A_ (W)w);	4677	ev_stop (EV_A_ (W)w);
2297	}
2298		4678
		4679	EV_FREQUENT_CHECK;
		4680	}
		4681	#endif
		4682
		4683	#if EV_CHECK_ENABLE
2299	void	4684	void
2300	ev_check_start (EV_P_ ev_check *w)	4685	ev_check_start (EV_P_ ev_check *w) EV_THROW
2301	{	4686	{
2302	if (expect_false (ev_is_active (w)))	4687	if (expect_false (ev_is_active (w)))
2303	return;	4688	return;
		4689
		4690	EV_FREQUENT_CHECK;
2304		4691
2305	ev_start (EV_A_ (W)w, ++checkcnt);	4692	ev_start (EV_A_ (W)w, ++checkcnt);
2306	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	4693	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2307	checks [checkcnt - 1] = w;	4694	checks [checkcnt - 1] = w;
2308	}
2309		4695
		4696	EV_FREQUENT_CHECK;
		4697	}
		4698
2310	void	4699	void
2311	ev_check_stop (EV_P_ ev_check *w)	4700	ev_check_stop (EV_P_ ev_check *w) EV_THROW
2312	{	4701	{
2313	clear_pending (EV_A_ (W)w);	4702	clear_pending (EV_A_ (W)w);
2314	if (expect_false (!ev_is_active (w)))	4703	if (expect_false (!ev_is_active (w)))
2315	return;	4704	return;
2316		4705
		4706	EV_FREQUENT_CHECK;
		4707
2317	{	4708	{
2318	int active = ((W)w)->active;	4709	int active = ev_active (w);
		4710
2319	checks [active - 1] = checks [--checkcnt];	4711	checks [active - 1] = checks [--checkcnt];
2320	((W)checks [active - 1])->active = active;	4712	ev_active (checks [active - 1]) = active;
2321	}	4713	}
2322		4714
2323	ev_stop (EV_A_ (W)w);	4715	ev_stop (EV_A_ (W)w);
		4716
		4717	EV_FREQUENT_CHECK;
2324	}	4718	}
		4719	#endif
2325		4720
2326	#if EV_EMBED_ENABLE	4721	#if EV_EMBED_ENABLE
2327	void noinline	4722	noinline
		4723	void
2328	ev_embed_sweep (EV_P_ ev_embed *w)	4724	ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2329	{	4725	{
2330	ev_loop (w->other, EVLOOP_NONBLOCK);	4726	ev_run (w->other, EVRUN_NOWAIT);
2331	}	4727	}
2332		4728
2333	static void	4729	static void
2334	embed_io_cb (EV_P_ ev_io *io, int revents)	4730	embed_io_cb (EV_P_ ev_io *io, int revents)
2335	{	4731	{
2336	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	4732	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2337		4733
2338	if (ev_cb (w))	4734	if (ev_cb (w))
2339	ev_feed_event (EV_A_ (W)w, EV_EMBED);	4735	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2340	else	4736	else
2341	ev_loop (w->other, EVLOOP_NONBLOCK);	4737	ev_run (w->other, EVRUN_NOWAIT);
2342	}	4738	}
2343		4739
2344	static void	4740	static void
2345	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	4741	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2346	{	4742	{
2347	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	4743	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2348		4744
2349	{	4745	{
2350	struct ev_loop *loop = w->other;	4746	EV_P = w->other;
2351		4747
2352	while (fdchangecnt)	4748	while (fdchangecnt)
2353	{	4749	{
2354	fd_reify (EV_A);	4750	fd_reify (EV_A);
2355	ev_loop (EV_A_ EVLOOP_NONBLOCK);	4751	ev_run (EV_A_ EVRUN_NOWAIT);
2356	}	4752	}
2357	}	4753	}
		4754	}
		4755
		4756	static void
		4757	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		4758	{
		4759	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		4760
		4761	ev_embed_stop (EV_A_ w);
		4762
		4763	{
		4764	EV_P = w->other;
		4765
		4766	ev_loop_fork (EV_A);
		4767	ev_run (EV_A_ EVRUN_NOWAIT);
		4768	}
		4769
		4770	ev_embed_start (EV_A_ w);
2358	}	4771	}
2359		4772
2360	#if 0	4773	#if 0
2361	static void	4774	static void
2362	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	4775	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2364	ev_idle_stop (EV_A_ idle);	4777	ev_idle_stop (EV_A_ idle);
2365	}	4778	}
2366	#endif	4779	#endif
2367		4780
2368	void	4781	void
2369	ev_embed_start (EV_P_ ev_embed *w)	4782	ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2370	{	4783	{
2371	if (expect_false (ev_is_active (w)))	4784	if (expect_false (ev_is_active (w)))
2372	return;	4785	return;
2373		4786
2374	{	4787	{
2375	struct ev_loop *loop = w->other;	4788	EV_P = w->other;
2376	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	4789	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2377	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	4790	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2378	}	4791	}
		4792
		4793	EV_FREQUENT_CHECK;
2379		4794
2380	ev_set_priority (&w->io, ev_priority (w));	4795	ev_set_priority (&w->io, ev_priority (w));
2381	ev_io_start (EV_A_ &w->io);	4796	ev_io_start (EV_A_ &w->io);
2382		4797
2383	ev_prepare_init (&w->prepare, embed_prepare_cb);	4798	ev_prepare_init (&w->prepare, embed_prepare_cb);
2384	ev_set_priority (&w->prepare, EV_MINPRI);	4799	ev_set_priority (&w->prepare, EV_MINPRI);
2385	ev_prepare_start (EV_A_ &w->prepare);	4800	ev_prepare_start (EV_A_ &w->prepare);
2386		4801
		4802	ev_fork_init (&w->fork, embed_fork_cb);
		4803	ev_fork_start (EV_A_ &w->fork);
		4804
2387	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	4805	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2388		4806
2389	ev_start (EV_A_ (W)w, 1);	4807	ev_start (EV_A_ (W)w, 1);
2390	}
2391		4808
		4809	EV_FREQUENT_CHECK;
		4810	}
		4811
2392	void	4812	void
2393	ev_embed_stop (EV_P_ ev_embed *w)	4813	ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2394	{	4814	{
2395	clear_pending (EV_A_ (W)w);	4815	clear_pending (EV_A_ (W)w);
2396	if (expect_false (!ev_is_active (w)))	4816	if (expect_false (!ev_is_active (w)))
2397	return;	4817	return;
2398		4818
		4819	EV_FREQUENT_CHECK;
		4820
2399	ev_io_stop (EV_A_ &w->io);	4821	ev_io_stop (EV_A_ &w->io);
2400	ev_prepare_stop (EV_A_ &w->prepare);	4822	ev_prepare_stop (EV_A_ &w->prepare);
		4823	ev_fork_stop (EV_A_ &w->fork);
2401		4824
2402	ev_stop (EV_A_ (W)w);	4825	ev_stop (EV_A_ (W)w);
		4826
		4827	EV_FREQUENT_CHECK;
2403	}	4828	}
2404	#endif	4829	#endif
2405		4830
2406	#if EV_FORK_ENABLE	4831	#if EV_FORK_ENABLE
2407	void	4832	void
2408	ev_fork_start (EV_P_ ev_fork *w)	4833	ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2409	{	4834	{
2410	if (expect_false (ev_is_active (w)))	4835	if (expect_false (ev_is_active (w)))
2411	return;	4836	return;
		4837
		4838	EV_FREQUENT_CHECK;
2412		4839
2413	ev_start (EV_A_ (W)w, ++forkcnt);	4840	ev_start (EV_A_ (W)w, ++forkcnt);
2414	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	4841	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2415	forks [forkcnt - 1] = w;	4842	forks [forkcnt - 1] = w;
2416	}
2417		4843
		4844	EV_FREQUENT_CHECK;
		4845	}
		4846
2418	void	4847	void
2419	ev_fork_stop (EV_P_ ev_fork *w)	4848	ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2420	{	4849	{
2421	clear_pending (EV_A_ (W)w);	4850	clear_pending (EV_A_ (W)w);
2422	if (expect_false (!ev_is_active (w)))	4851	if (expect_false (!ev_is_active (w)))
2423	return;	4852	return;
2424		4853
		4854	EV_FREQUENT_CHECK;
		4855
2425	{	4856	{
2426	int active = ((W)w)->active;	4857	int active = ev_active (w);
		4858
2427	forks [active - 1] = forks [--forkcnt];	4859	forks [active - 1] = forks [--forkcnt];
2428	((W)forks [active - 1])->active = active;	4860	ev_active (forks [active - 1]) = active;
2429	}	4861	}
2430		4862
2431	ev_stop (EV_A_ (W)w);	4863	ev_stop (EV_A_ (W)w);
2432	}
2433	#endif
2434		4864
		4865	EV_FREQUENT_CHECK;
		4866	}
		4867	#endif
		4868
2435	#if EV_ASYNC_ENABLE	4869	#if EV_CLEANUP_ENABLE
2436	void	4870	void
2437	ev_async_start (EV_P_ ev_async *w)	4871	ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
2438	{	4872	{
2439	if (expect_false (ev_is_active (w)))	4873	if (expect_false (ev_is_active (w)))
2440	return;	4874	return;
2441		4875
		4876	EV_FREQUENT_CHECK;
		4877
		4878	ev_start (EV_A_ (W)w, ++cleanupcnt);
		4879	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		4880	cleanups [cleanupcnt - 1] = w;
		4881
		4882	/* cleanup watchers should never keep a refcount on the loop */
		4883	ev_unref (EV_A);
		4884	EV_FREQUENT_CHECK;
		4885	}
		4886
		4887	void
		4888	ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
		4889	{
		4890	clear_pending (EV_A_ (W)w);
		4891	if (expect_false (!ev_is_active (w)))
		4892	return;
		4893
		4894	EV_FREQUENT_CHECK;
		4895	ev_ref (EV_A);
		4896
		4897	{
		4898	int active = ev_active (w);
		4899
		4900	cleanups [active - 1] = cleanups [--cleanupcnt];
		4901	ev_active (cleanups [active - 1]) = active;
		4902	}
		4903
		4904	ev_stop (EV_A_ (W)w);
		4905
		4906	EV_FREQUENT_CHECK;
		4907	}
		4908	#endif
		4909
		4910	#if EV_ASYNC_ENABLE
		4911	void
		4912	ev_async_start (EV_P_ ev_async *w) EV_THROW
		4913	{
		4914	if (expect_false (ev_is_active (w)))
		4915	return;
		4916
		4917	w->sent = 0;
		4918
2442	evpipe_init (EV_A);	4919	evpipe_init (EV_A);
		4920
		4921	EV_FREQUENT_CHECK;
2443		4922
2444	ev_start (EV_A_ (W)w, ++asynccnt);	4923	ev_start (EV_A_ (W)w, ++asynccnt);
2445	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	4924	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2446	asyncs [asynccnt - 1] = w;	4925	asyncs [asynccnt - 1] = w;
2447	}
2448		4926
		4927	EV_FREQUENT_CHECK;
		4928	}
		4929
2449	void	4930	void
2450	ev_async_stop (EV_P_ ev_async *w)	4931	ev_async_stop (EV_P_ ev_async *w) EV_THROW
2451	{	4932	{
2452	clear_pending (EV_A_ (W)w);	4933	clear_pending (EV_A_ (W)w);
2453	if (expect_false (!ev_is_active (w)))	4934	if (expect_false (!ev_is_active (w)))
2454	return;	4935	return;
2455		4936
		4937	EV_FREQUENT_CHECK;
		4938
2456	{	4939	{
2457	int active = ((W)w)->active;	4940	int active = ev_active (w);
		4941
2458	asyncs [active - 1] = asyncs [--asynccnt];	4942	asyncs [active - 1] = asyncs [--asynccnt];
2459	((W)asyncs [active - 1])->active = active;	4943	ev_active (asyncs [active - 1]) = active;
2460	}	4944	}
2461		4945
2462	ev_stop (EV_A_ (W)w);	4946	ev_stop (EV_A_ (W)w);
2463	}
2464		4947
		4948	EV_FREQUENT_CHECK;
		4949	}
		4950
2465	void	4951	void
2466	ev_async_send (EV_P_ ev_async *w)	4952	ev_async_send (EV_P_ ev_async *w) EV_THROW
2467	{	4953	{
2468	w->sent = 1;	4954	w->sent = 1;
2469	evpipe_write (EV_A_ 0, 1);	4955	evpipe_write (EV_A_ &async_pending);
2470	}	4956	}
2471	#endif	4957	#endif
2472		4958
2473	/*****************************************************************************/	4959	/*****************************************************************************/
2474		4960
…		…
2484	once_cb (EV_P_ struct ev_once *once, int revents)	4970	once_cb (EV_P_ struct ev_once *once, int revents)
2485	{	4971	{
2486	void (*cb)(int revents, void *arg) = once->cb;	4972	void (*cb)(int revents, void *arg) = once->cb;
2487	void *arg = once->arg;	4973	void *arg = once->arg;
2488		4974
2489	ev_io_stop (EV_A_ &once->io);	4975	ev_io_stop (EV_A_ &once->io);
2490	ev_timer_stop (EV_A_ &once->to);	4976	ev_timer_stop (EV_A_ &once->to);
2491	ev_free (once);	4977	ev_free (once);
2492		4978
2493	cb (revents, arg);	4979	cb (revents, arg);
2494	}	4980	}
2495		4981
2496	static void	4982	static void
2497	once_cb_io (EV_P_ ev_io *w, int revents)	4983	once_cb_io (EV_P_ ev_io *w, int revents)
2498	{	4984	{
2499	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	4985	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		4986
		4987	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2500	}	4988	}
2501		4989
2502	static void	4990	static void
2503	once_cb_to (EV_P_ ev_timer *w, int revents)	4991	once_cb_to (EV_P_ ev_timer *w, int revents)
2504	{	4992	{
2505	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	4993	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
2506	}
2507		4994
		4995	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
		4996	}
		4997
2508	void	4998	void
2509	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	4999	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2510	{	5000	{
2511	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	5001	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2512		5002
2513	if (expect_false (!once))	5003	if (expect_false (!once))
2514	{	5004	{
2515	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	5005	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2516	return;	5006	return;
2517	}	5007	}
2518		5008
2519	once->cb = cb;	5009	once->cb = cb;
2520	once->arg = arg;	5010	once->arg = arg;
…		…
2532	ev_timer_set (&once->to, timeout, 0.);	5022	ev_timer_set (&once->to, timeout, 0.);
2533	ev_timer_start (EV_A_ &once->to);	5023	ev_timer_start (EV_A_ &once->to);
2534	}	5024	}
2535	}	5025	}
2536		5026
		5027	/*****************************************************************************/
		5028
		5029	#if EV_WALK_ENABLE
		5030	ecb_cold
		5031	void
		5032	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
		5033	{
		5034	int i, j;
		5035	ev_watcher_list *wl, *wn;
		5036
		5037	if (types & (EV_IO | EV_EMBED))
		5038	for (i = 0; i < anfdmax; ++i)
		5039	for (wl = anfds [i].head; wl; )
		5040	{
		5041	wn = wl->next;
		5042
		5043	#if EV_EMBED_ENABLE
		5044	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		5045	{
		5046	if (types & EV_EMBED)
		5047	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		5048	}
		5049	else
		5050	#endif
		5051	#if EV_USE_INOTIFY
		5052	if (ev_cb ((ev_io *)wl) == infy_cb)
		5053	;
		5054	else
		5055	#endif
		5056	if ((ev_io *)wl != &pipe_w)
		5057	if (types & EV_IO)
		5058	cb (EV_A_ EV_IO, wl);
		5059
		5060	wl = wn;
		5061	}
		5062
		5063	if (types & (EV_TIMER | EV_STAT))
		5064	for (i = timercnt + HEAP0; i-- > HEAP0; )
		5065	#if EV_STAT_ENABLE
		5066	/*TODO: timer is not always active*/
		5067	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		5068	{
		5069	if (types & EV_STAT)
		5070	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		5071	}
		5072	else
		5073	#endif
		5074	if (types & EV_TIMER)
		5075	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		5076
		5077	#if EV_PERIODIC_ENABLE
		5078	if (types & EV_PERIODIC)
		5079	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		5080	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		5081	#endif
		5082
		5083	#if EV_IDLE_ENABLE
		5084	if (types & EV_IDLE)
		5085	for (j = NUMPRI; j--; )
		5086	for (i = idlecnt [j]; i--; )
		5087	cb (EV_A_ EV_IDLE, idles [j][i]);
		5088	#endif
		5089
		5090	#if EV_FORK_ENABLE
		5091	if (types & EV_FORK)
		5092	for (i = forkcnt; i--; )
		5093	if (ev_cb (forks [i]) != embed_fork_cb)
		5094	cb (EV_A_ EV_FORK, forks [i]);
		5095	#endif
		5096
		5097	#if EV_ASYNC_ENABLE
		5098	if (types & EV_ASYNC)
		5099	for (i = asynccnt; i--; )
		5100	cb (EV_A_ EV_ASYNC, asyncs [i]);
		5101	#endif
		5102
		5103	#if EV_PREPARE_ENABLE
		5104	if (types & EV_PREPARE)
		5105	for (i = preparecnt; i--; )
		5106	# if EV_EMBED_ENABLE
		5107	if (ev_cb (prepares [i]) != embed_prepare_cb)
		5108	# endif
		5109	cb (EV_A_ EV_PREPARE, prepares [i]);
		5110	#endif
		5111
		5112	#if EV_CHECK_ENABLE
		5113	if (types & EV_CHECK)
		5114	for (i = checkcnt; i--; )
		5115	cb (EV_A_ EV_CHECK, checks [i]);
		5116	#endif
		5117
		5118	#if EV_SIGNAL_ENABLE
		5119	if (types & EV_SIGNAL)
		5120	for (i = 0; i < EV_NSIG - 1; ++i)
		5121	for (wl = signals [i].head; wl; )
		5122	{
		5123	wn = wl->next;
		5124	cb (EV_A_ EV_SIGNAL, wl);
		5125	wl = wn;
		5126	}
		5127	#endif
		5128
		5129	#if EV_CHILD_ENABLE
		5130	if (types & EV_CHILD)
		5131	for (i = (EV_PID_HASHSIZE); i--; )
		5132	for (wl = childs [i]; wl; )
		5133	{
		5134	wn = wl->next;
		5135	cb (EV_A_ EV_CHILD, wl);
		5136	wl = wn;
		5137	}
		5138	#endif
		5139	/* EV_STAT 0x00001000 /* stat data changed */
		5140	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		5141	}
		5142	#endif
		5143
2537	#if EV_MULTIPLICITY	5144	#if EV_MULTIPLICITY
2538	#include "ev_wrap.h"	5145	#include "ev_wrap.h"
2539	#endif	5146	#endif
2540		5147
2541	#ifdef __cplusplus
2542	}
2543	#endif
2544

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