ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.217 by root, Sat Mar 22 13:42:45 2008 UTC vs.
Revision 1.481 by root, Thu Jun 1 20:25:50 2017 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
126	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
127	#include <fcntl.h>	169	#include <fcntl.h>
128	#include <stddef.h>	170	#include <stddef.h>
129		171
130	#include <stdio.h>	172	#include <stdio.h>
131		173
132	#include <assert.h>	174	#include <assert.h>
133	#include <errno.h>	175	#include <errno.h>
134	#include <sys/types.h>	176	#include <sys/types.h>
135	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
136		179
137	#include <signal.h>	180	#include <signal.h>
138		181
139	#ifdef EV_H	182	#ifdef EV_H
140	# include EV_H	183	# include EV_H
141	#else	184	#else
142	# include "ev.h"	185	# include "ev.h"
		186	#endif
		187
		188	#if EV_NO_THREADS
		189	# undef EV_NO_SMP
		190	# define EV_NO_SMP 1
		191	# undef ECB_NO_THREADS
		192	# define ECB_NO_THREADS 1
		193	#endif
		194	#if EV_NO_SMP
		195	# undef EV_NO_SMP
		196	# define ECB_NO_SMP 1
143	#endif	197	#endif
144		198
145	#ifndef _WIN32	199	#ifndef _WIN32
146	# include <sys/time.h>	200	# include <sys/time.h>
147	# include <sys/wait.h>	201	# include <sys/wait.h>
148	# include <unistd.h>	202	# include <unistd.h>
149	#else	203	#else
		204	# include <io.h>
150	# define WIN32_LEAN_AND_MEAN	205	# define WIN32_LEAN_AND_MEAN
		206	# include <winsock2.h>
151	# include <windows.h>	207	# include <windows.h>
152	# ifndef EV_SELECT_IS_WINSOCKET	208	# ifndef EV_SELECT_IS_WINSOCKET
153	# define EV_SELECT_IS_WINSOCKET 1	209	# define EV_SELECT_IS_WINSOCKET 1
154	# endif	210	# endif
		211	# undef EV_AVOID_STDIO
		212	#endif
		213
		214	/* OS X, in its infinite idiocy, actually HARDCODES
		215	* a limit of 1024 into their select. Where people have brains,
		216	* OS X engineers apparently have a vacuum. Or maybe they were
		217	* ordered to have a vacuum, or they do anything for money.
		218	* This might help. Or not.
		219	*/
		220	#define _DARWIN_UNLIMITED_SELECT 1
		221
		222	/* this block tries to deduce configuration from header-defined symbols and defaults */
		223
		224	/* try to deduce the maximum number of signals on this platform */
		225	#if defined EV_NSIG
		226	/* use what's provided */
		227	#elif defined NSIG
		228	# define EV_NSIG (NSIG)
		229	#elif defined _NSIG
		230	# define EV_NSIG (_NSIG)
		231	#elif defined SIGMAX
		232	# define EV_NSIG (SIGMAX+1)
		233	#elif defined SIG_MAX
		234	# define EV_NSIG (SIG_MAX+1)
		235	#elif defined _SIG_MAX
		236	# define EV_NSIG (_SIG_MAX+1)
		237	#elif defined MAXSIG
		238	# define EV_NSIG (MAXSIG+1)
		239	#elif defined MAX_SIG
		240	# define EV_NSIG (MAX_SIG+1)
		241	#elif defined SIGARRAYSIZE
		242	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		243	#elif defined _sys_nsig
		244	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		245	#else
		246	# define EV_NSIG (8 * sizeof (sigset_t) + 1)
		247	#endif
		248
		249	#ifndef EV_USE_FLOOR
		250	# define EV_USE_FLOOR 0
		251	#endif
		252
		253	#ifndef EV_USE_CLOCK_SYSCALL
		254	# if __linux && __GLIBC__ == 2 && __GLIBC_MINOR__ < 17
		255	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
		256	# else
		257	# define EV_USE_CLOCK_SYSCALL 0
155	#endif	258	# endif
		259	#endif
156		260
157	/**/	261	#if !(_POSIX_TIMERS > 0)
		262	# ifndef EV_USE_MONOTONIC
		263	# define EV_USE_MONOTONIC 0
		264	# endif
		265	# ifndef EV_USE_REALTIME
		266	# define EV_USE_REALTIME 0
		267	# endif
		268	#endif
158		269
159	#ifndef EV_USE_MONOTONIC	270	#ifndef EV_USE_MONOTONIC
		271	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
		272	# define EV_USE_MONOTONIC EV_FEATURE_OS
		273	# else
160	# define EV_USE_MONOTONIC 0	274	# define EV_USE_MONOTONIC 0
		275	# endif
161	#endif	276	#endif
162		277
163	#ifndef EV_USE_REALTIME	278	#ifndef EV_USE_REALTIME
164	# define EV_USE_REALTIME 0	279	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165	#endif	280	#endif
166		281
167	#ifndef EV_USE_NANOSLEEP	282	#ifndef EV_USE_NANOSLEEP
		283	# if _POSIX_C_SOURCE >= 199309L
		284	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		285	# else
168	# define EV_USE_NANOSLEEP 0	286	# define EV_USE_NANOSLEEP 0
		287	# endif
169	#endif	288	#endif
170		289
171	#ifndef EV_USE_SELECT	290	#ifndef EV_USE_SELECT
172	# define EV_USE_SELECT 1	291	# define EV_USE_SELECT EV_FEATURE_BACKENDS
173	#endif	292	#endif
174		293
175	#ifndef EV_USE_POLL	294	#ifndef EV_USE_POLL
176	# ifdef _WIN32	295	# ifdef _WIN32
177	# define EV_USE_POLL 0	296	# define EV_USE_POLL 0
178	# else	297	# else
179	# define EV_USE_POLL 1	298	# define EV_USE_POLL EV_FEATURE_BACKENDS
180	# endif	299	# endif
181	#endif	300	#endif
182		301
183	#ifndef EV_USE_EPOLL	302	#ifndef EV_USE_EPOLL
		303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		304	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
		305	# else
184	# define EV_USE_EPOLL 0	306	# define EV_USE_EPOLL 0
		307	# endif
185	#endif	308	#endif
186		309
187	#ifndef EV_USE_KQUEUE	310	#ifndef EV_USE_KQUEUE
188	# define EV_USE_KQUEUE 0	311	# define EV_USE_KQUEUE 0
189	#endif	312	#endif
…		…
191	#ifndef EV_USE_PORT	314	#ifndef EV_USE_PORT
192	# define EV_USE_PORT 0	315	# define EV_USE_PORT 0
193	#endif	316	#endif
194		317
195	#ifndef EV_USE_INOTIFY	318	#ifndef EV_USE_INOTIFY
		319	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		320	# define EV_USE_INOTIFY EV_FEATURE_OS
		321	# else
196	# define EV_USE_INOTIFY 0	322	# define EV_USE_INOTIFY 0
		323	# endif
197	#endif	324	#endif
198		325
199	#ifndef EV_PID_HASHSIZE	326	#ifndef EV_PID_HASHSIZE
200	# if EV_MINIMAL	327	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201	# define EV_PID_HASHSIZE 1	328	#endif
		329
		330	#ifndef EV_INOTIFY_HASHSIZE
		331	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
		332	#endif
		333
		334	#ifndef EV_USE_EVENTFD
		335	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		336	# define EV_USE_EVENTFD EV_FEATURE_OS
202	# else	337	# else
203	# define EV_PID_HASHSIZE 16	338	# define EV_USE_EVENTFD 0
204	# endif	339	# endif
205	#endif	340	#endif
206		341
207	#ifndef EV_INOTIFY_HASHSIZE	342	#ifndef EV_USE_SIGNALFD
208	# if EV_MINIMAL	343	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209	# define EV_INOTIFY_HASHSIZE 1	344	# define EV_USE_SIGNALFD EV_FEATURE_OS
210	# else	345	# else
211	# define EV_INOTIFY_HASHSIZE 16	346	# define EV_USE_SIGNALFD 0
212	# endif	347	# endif
213	#endif	348	#endif
214		349
215	/**/	350	#if 0 /* debugging */
		351	# define EV_VERIFY 3
		352	# define EV_USE_4HEAP 1
		353	# define EV_HEAP_CACHE_AT 1
		354	#endif
		355
		356	#ifndef EV_VERIFY
		357	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		358	#endif
		359
		360	#ifndef EV_USE_4HEAP
		361	# define EV_USE_4HEAP EV_FEATURE_DATA
		362	#endif
		363
		364	#ifndef EV_HEAP_CACHE_AT
		365	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		366	#endif
		367
		368	#ifdef __ANDROID__
		369	/* supposedly, android doesn't typedef fd_mask */
		370	# undef EV_USE_SELECT
		371	# define EV_USE_SELECT 0
		372	/* supposedly, we need to include syscall.h, not sys/syscall.h, so just disable */
		373	# undef EV_USE_CLOCK_SYSCALL
		374	# define EV_USE_CLOCK_SYSCALL 0
		375	#endif
		376
		377	/* aix's poll.h seems to cause lots of trouble */
		378	#ifdef _AIX
		379	/* AIX has a completely broken poll.h header */
		380	# undef EV_USE_POLL
		381	# define EV_USE_POLL 0
		382	#endif
		383
		384	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		385	/* which makes programs even slower. might work on other unices, too. */
		386	#if EV_USE_CLOCK_SYSCALL
		387	# include <sys/syscall.h>
		388	# ifdef SYS_clock_gettime
		389	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		390	# undef EV_USE_MONOTONIC
		391	# define EV_USE_MONOTONIC 1
		392	# else
		393	# undef EV_USE_CLOCK_SYSCALL
		394	# define EV_USE_CLOCK_SYSCALL 0
		395	# endif
		396	#endif
		397
		398	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
216		399
217	#ifndef CLOCK_MONOTONIC	400	#ifndef CLOCK_MONOTONIC
218	# undef EV_USE_MONOTONIC	401	# undef EV_USE_MONOTONIC
219	# define EV_USE_MONOTONIC 0	402	# define EV_USE_MONOTONIC 0
220	#endif	403	#endif
…		…
228	# undef EV_USE_INOTIFY	411	# undef EV_USE_INOTIFY
229	# define EV_USE_INOTIFY 0	412	# define EV_USE_INOTIFY 0
230	#endif	413	#endif
231		414
232	#if !EV_USE_NANOSLEEP	415	#if !EV_USE_NANOSLEEP
233	# ifndef _WIN32	416	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		417	# if !defined _WIN32 && !defined __hpux
234	# include <sys/select.h>	418	# include <sys/select.h>
235	# endif	419	# endif
236	#endif	420	#endif
237		421
238	#if EV_USE_INOTIFY	422	#if EV_USE_INOTIFY
		423	# include <sys/statfs.h>
239	# include <sys/inotify.h>	424	# include <sys/inotify.h>
		425	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		426	# ifndef IN_DONT_FOLLOW
		427	# undef EV_USE_INOTIFY
		428	# define EV_USE_INOTIFY 0
240	#endif	429	# endif
		430	#endif
241		431
242	#if EV_SELECT_IS_WINSOCKET	432	#if EV_USE_EVENTFD
		433	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
243	# include <winsock.h>	434	# include <stdint.h>
		435	# ifndef EFD_NONBLOCK
		436	# define EFD_NONBLOCK O_NONBLOCK
		437	# endif
		438	# ifndef EFD_CLOEXEC
		439	# ifdef O_CLOEXEC
		440	# define EFD_CLOEXEC O_CLOEXEC
		441	# else
		442	# define EFD_CLOEXEC 02000000
		443	# endif
		444	# endif
		445	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
		446	#endif
		447
		448	#if EV_USE_SIGNALFD
		449	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		450	# include <stdint.h>
		451	# ifndef SFD_NONBLOCK
		452	# define SFD_NONBLOCK O_NONBLOCK
		453	# endif
		454	# ifndef SFD_CLOEXEC
		455	# ifdef O_CLOEXEC
		456	# define SFD_CLOEXEC O_CLOEXEC
		457	# else
		458	# define SFD_CLOEXEC 02000000
		459	# endif
		460	# endif
		461	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
		462
		463	struct signalfd_siginfo
		464	{
		465	uint32_t ssi_signo;
		466	char pad[128 - sizeof (uint32_t)];
		467	};
244	#endif	468	#endif
245		469
246	/**/	470	/**/
247		471
		472	#if EV_VERIFY >= 3
		473	# define EV_FREQUENT_CHECK ev_verify (EV_A)
		474	#else
		475	# define EV_FREQUENT_CHECK do { } while (0)
		476	#endif
		477
248	/*	478	/*
249	* This is used to avoid floating point rounding problems.	479	* 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.	480	* This value is good at least till the year 4000.
254	* Better solutions welcome.
255	*/	481	*/
256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	482	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		483	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
257		484
258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	485	#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) */	486	#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		487
		488	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
		489	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
		490
		491	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
		492	/* ECB.H BEGIN */
		493	/*
		494	* libecb - http://software.schmorp.de/pkg/libecb
		495	*
		496	* Copyright (©) 2009-2015 Marc Alexander Lehmann <libecb@schmorp.de>
		497	* Copyright (©) 2011 Emanuele Giaquinta
		498	* All rights reserved.
		499	*
		500	* Redistribution and use in source and binary forms, with or without modifica-
		501	* tion, are permitted provided that the following conditions are met:
		502	*
		503	* 1. Redistributions of source code must retain the above copyright notice,
		504	* this list of conditions and the following disclaimer.
		505	*
		506	* 2. Redistributions in binary form must reproduce the above copyright
		507	* notice, this list of conditions and the following disclaimer in the
		508	* documentation and/or other materials provided with the distribution.
		509	*
		510	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		511	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		512	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		513	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		514	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		515	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		516	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		517	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		518	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		519	* OF THE POSSIBILITY OF SUCH DAMAGE.
		520	*
		521	* Alternatively, the contents of this file may be used under the terms of
		522	* the GNU General Public License ("GPL") version 2 or any later version,
		523	* in which case the provisions of the GPL are applicable instead of
		524	* the above. If you wish to allow the use of your version of this file
		525	* only under the terms of the GPL and not to allow others to use your
		526	* version of this file under the BSD license, indicate your decision
		527	* by deleting the provisions above and replace them with the notice
		528	* and other provisions required by the GPL. If you do not delete the
		529	* provisions above, a recipient may use your version of this file under
		530	* either the BSD or the GPL.
		531	*/
		532
		533	#ifndef ECB_H
		534	#define ECB_H
		535
		536	/* 16 bits major, 16 bits minor */
		537	#define ECB_VERSION 0x00010005
		538
		539	#ifdef _WIN32
		540	typedef signed char int8_t;
		541	typedef unsigned char uint8_t;
		542	typedef signed short int16_t;
		543	typedef unsigned short uint16_t;
		544	typedef signed int int32_t;
		545	typedef unsigned int uint32_t;
262	#if __GNUC__ >= 4	546	#if __GNUC__
		547	typedef signed long long int64_t;
		548	typedef unsigned long long uint64_t;
		549	#else /* _MSC_VER || __BORLANDC__ */
		550	typedef signed __int64 int64_t;
		551	typedef unsigned __int64 uint64_t;
		552	#endif
		553	#ifdef _WIN64
		554	#define ECB_PTRSIZE 8
		555	typedef uint64_t uintptr_t;
		556	typedef int64_t intptr_t;
		557	#else
		558	#define ECB_PTRSIZE 4
		559	typedef uint32_t uintptr_t;
		560	typedef int32_t intptr_t;
		561	#endif
		562	#else
		563	#include <inttypes.h>
		564	#if (defined INTPTR_MAX ? INTPTR_MAX : ULONG_MAX) > 0xffffffffU
		565	#define ECB_PTRSIZE 8
		566	#else
		567	#define ECB_PTRSIZE 4
		568	#endif
		569	#endif
		570
		571	#define ECB_GCC_AMD64 (__amd64 || __amd64__ || __x86_64 || __x86_64__)
		572	#define ECB_MSVC_AMD64 (_M_AMD64 || _M_X64)
		573
		574	/* work around x32 idiocy by defining proper macros */
		575	#if ECB_GCC_AMD64 || ECB_MSVC_AMD64
		576	#if _ILP32
		577	#define ECB_AMD64_X32 1
		578	#else
		579	#define ECB_AMD64 1
		580	#endif
		581	#endif
		582
		583	/* many compilers define _GNUC_ to some versions but then only implement
		584	* what their idiot authors think are the "more important" extensions,
		585	* causing enormous grief in return for some better fake benchmark numbers.
		586	* or so.
		587	* we try to detect these and simply assume they are not gcc - if they have
		588	* an issue with that they should have done it right in the first place.
		589	*/
		590	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
		591	#define ECB_GCC_VERSION(major,minor) 0
		592	#else
		593	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		594	#endif
		595
		596	#define ECB_CLANG_VERSION(major,minor) (__clang_major__ > (major) || (__clang_major__ == (major) && __clang_minor__ >= (minor)))
		597
		598	#if __clang__ && defined __has_builtin
		599	#define ECB_CLANG_BUILTIN(x) __has_builtin (x)
		600	#else
		601	#define ECB_CLANG_BUILTIN(x) 0
		602	#endif
		603
		604	#if __clang__ && defined __has_extension
		605	#define ECB_CLANG_EXTENSION(x) __has_extension (x)
		606	#else
		607	#define ECB_CLANG_EXTENSION(x) 0
		608	#endif
		609
		610	#define ECB_CPP (__cplusplus+0)
		611	#define ECB_CPP11 (__cplusplus >= 201103L)
		612
		613	#if ECB_CPP
		614	#define ECB_C 0
		615	#define ECB_STDC_VERSION 0
		616	#else
		617	#define ECB_C 1
		618	#define ECB_STDC_VERSION __STDC_VERSION__
		619	#endif
		620
		621	#define ECB_C99 (ECB_STDC_VERSION >= 199901L)
		622	#define ECB_C11 (ECB_STDC_VERSION >= 201112L)
		623
		624	#if ECB_CPP
		625	#define ECB_EXTERN_C extern "C"
		626	#define ECB_EXTERN_C_BEG ECB_EXTERN_C {
		627	#define ECB_EXTERN_C_END }
		628	#else
		629	#define ECB_EXTERN_C extern
		630	#define ECB_EXTERN_C_BEG
		631	#define ECB_EXTERN_C_END
		632	#endif
		633
		634	/*****************************************************************************/
		635
		636	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		637	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		638
		639	#if ECB_NO_THREADS
		640	#define ECB_NO_SMP 1
		641	#endif
		642
		643	#if ECB_NO_SMP
		644	#define ECB_MEMORY_FENCE do { } while (0)
		645	#endif
		646
		647	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/compiler_builtins.html */
		648	#if __xlC__ && ECB_CPP
		649	#include <builtins.h>
		650	#endif
		651
		652	#if 1400 <= _MSC_VER
		653	#include <intrin.h> /* fence functions _ReadBarrier, also bit search functions _BitScanReverse */
		654	#endif
		655
		656	#ifndef ECB_MEMORY_FENCE
		657	#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		658	#if __i386 || __i386__
		659	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		660	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		661	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		662	#elif ECB_GCC_AMD64
		663	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		664	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("" : : : "memory")
		665	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		666	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		667	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		668	#elif defined __ARM_ARCH_2__ \
		669	|| defined __ARM_ARCH_3__ || defined __ARM_ARCH_3M__ \
		670	|| defined __ARM_ARCH_4__ || defined __ARM_ARCH_4T__ \
		671	|| defined __ARM_ARCH_5__ || defined __ARM_ARCH_5E__ \
		672	|| defined __ARM_ARCH_5T__ || defined __ARM_ARCH_5TE__ \
		673	|| defined __ARM_ARCH_5TEJ__
		674	/* should not need any, unless running old code on newer cpu - arm doesn't support that */
		675	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		676	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__ \
		677	|| defined __ARM_ARCH_6T2__
		678	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		679	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		680	|| defined __ARM_ARCH_7R__ || defined __ARM_ARCH_7M__
		681	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		682	#elif __aarch64__
		683	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb ish" : : : "memory")
		684	#elif (__sparc || __sparc__) && !(__sparc_v8__ || defined __sparcv8)
		685	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad" : : : "memory")
		686	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		687	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		688	#elif defined __s390__ || defined __s390x__
		689	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		690	#elif defined __mips__
		691	/* GNU/Linux emulates sync on mips1 architectures, so we force its use */
		692	/* anybody else who still uses mips1 is supposed to send in their version, with detection code. */
		693	#define ECB_MEMORY_FENCE __asm__ __volatile__ (".set mips2; sync; .set mips0" : : : "memory")
		694	#elif defined __alpha__
		695	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		696	#elif defined __hppa__
		697	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		698	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("")
		699	#elif defined __ia64__
		700	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mf" : : : "memory")
		701	#elif defined __m68k__
		702	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		703	#elif defined __m88k__
		704	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("tb1 0,%%r0,128" : : : "memory")
		705	#elif defined __sh__
		706	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("" : : : "memory")
		707	#endif
		708	#endif
		709	#endif
		710
		711	#ifndef ECB_MEMORY_FENCE
		712	#if ECB_GCC_VERSION(4,7)
		713	/* see comment below (stdatomic.h) about the C11 memory model. */
		714	#define ECB_MEMORY_FENCE __atomic_thread_fence (__ATOMIC_SEQ_CST)
		715	#define ECB_MEMORY_FENCE_ACQUIRE __atomic_thread_fence (__ATOMIC_ACQUIRE)
		716	#define ECB_MEMORY_FENCE_RELEASE __atomic_thread_fence (__ATOMIC_RELEASE)
		717
		718	#elif ECB_CLANG_EXTENSION(c_atomic)
		719	/* see comment below (stdatomic.h) about the C11 memory model. */
		720	#define ECB_MEMORY_FENCE __c11_atomic_thread_fence (__ATOMIC_SEQ_CST)
		721	#define ECB_MEMORY_FENCE_ACQUIRE __c11_atomic_thread_fence (__ATOMIC_ACQUIRE)
		722	#define ECB_MEMORY_FENCE_RELEASE __c11_atomic_thread_fence (__ATOMIC_RELEASE)
		723
		724	#elif ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		725	#define ECB_MEMORY_FENCE __sync_synchronize ()
		726	#elif _MSC_VER >= 1500 /* VC++ 2008 */
		727	/* apparently, microsoft broke all the memory barrier stuff in Visual Studio 2008... */
		728	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		729	#define ECB_MEMORY_FENCE _ReadWriteBarrier (); MemoryBarrier()
		730	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier (); MemoryBarrier() /* according to msdn, _ReadBarrier is not a load fence */
		731	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier (); MemoryBarrier()
		732	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		733	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		734	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		735	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		736	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		737	#elif defined _WIN32
		738	#include <WinNT.h>
		739	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		740	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		741	#include <mbarrier.h>
		742	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		743	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		744	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		745	#elif __xlC__
		746	#define ECB_MEMORY_FENCE __sync ()
		747	#endif
		748	#endif
		749
		750	#ifndef ECB_MEMORY_FENCE
		751	#if ECB_C11 && !defined __STDC_NO_ATOMICS__
		752	/* we assume that these memory fences work on all variables/all memory accesses, */
		753	/* not just C11 atomics and atomic accesses */
		754	#include <stdatomic.h>
		755	/* Unfortunately, neither gcc 4.7 nor clang 3.1 generate any instructions for */
		756	/* any fence other than seq_cst, which isn't very efficient for us. */
		757	/* Why that is, we don't know - either the C11 memory model is quite useless */
		758	/* for most usages, or gcc and clang have a bug */
		759	/* I *currently* lean towards the latter, and inefficiently implement */
		760	/* all three of ecb's fences as a seq_cst fence */
		761	/* Update, gcc-4.8 generates mfence for all c++ fences, but nothing */
		762	/* for all __atomic_thread_fence's except seq_cst */
		763	#define ECB_MEMORY_FENCE atomic_thread_fence (memory_order_seq_cst)
		764	#endif
		765	#endif
		766
		767	#ifndef ECB_MEMORY_FENCE
		768	#if !ECB_AVOID_PTHREADS
		769	/*
		770	* if you get undefined symbol references to pthread_mutex_lock,
		771	* or failure to find pthread.h, then you should implement
		772	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		773	* OR provide pthread.h and link against the posix thread library
		774	* of your system.
		775	*/
		776	#include <pthread.h>
		777	#define ECB_NEEDS_PTHREADS 1
		778	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		779
		780	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		781	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		782	#endif
		783	#endif
		784
		785	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		786	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		787	#endif
		788
		789	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		790	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		791	#endif
		792
		793	/*****************************************************************************/
		794
		795	#if ECB_CPP
		796	#define ecb_inline static inline
		797	#elif ECB_GCC_VERSION(2,5)
		798	#define ecb_inline static __inline__
		799	#elif ECB_C99
		800	#define ecb_inline static inline
		801	#else
		802	#define ecb_inline static
		803	#endif
		804
		805	#if ECB_GCC_VERSION(3,3)
		806	#define ecb_restrict __restrict__
		807	#elif ECB_C99
		808	#define ecb_restrict restrict
		809	#else
		810	#define ecb_restrict
		811	#endif
		812
		813	typedef int ecb_bool;
		814
		815	#define ECB_CONCAT_(a, b) a ## b
		816	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		817	#define ECB_STRINGIFY_(a) # a
		818	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		819	#define ECB_STRINGIFY_EXPR(expr) ((expr), ECB_STRINGIFY_ (expr))
		820
		821	#define ecb_function_ ecb_inline
		822
		823	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_VERSION(2,8)
		824	#define ecb_attribute(attrlist) __attribute__ (attrlist)
		825	#else
		826	#define ecb_attribute(attrlist)
		827	#endif
		828
		829	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_constant_p)
		830	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		831	#else
		832	/* possible C11 impl for integral types
		833	typedef struct ecb_is_constant_struct ecb_is_constant_struct;
		834	#define ecb_is_constant(expr) _Generic ((1 ? (struct ecb_is_constant_struct *)0 : (void *)((expr) - (expr)), ecb_is_constant_struct *: 0, default: 1)) */
		835
		836	#define ecb_is_constant(expr) 0
		837	#endif
		838
		839	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_expect)
263	# define expect(expr,value) __builtin_expect ((expr),(value))	840	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
264	# define noinline __attribute__ ((noinline))
265	#else	841	#else
266	# define expect(expr,value) (expr)	842	#define ecb_expect(expr,value) (expr)
267	# define noinline
268	# if __STDC_VERSION__ < 199901L
269	# define inline
270	# endif	843	#endif
271	#endif
272		844
		845	#if ECB_GCC_VERSION(3,1) || ECB_CLANG_BUILTIN(__builtin_prefetch)
		846	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		847	#else
		848	#define ecb_prefetch(addr,rw,locality)
		849	#endif
		850
		851	/* no emulation for ecb_decltype */
		852	#if ECB_CPP11
		853	// older implementations might have problems with decltype(x)::type, work around it
		854	template<class T> struct ecb_decltype_t { typedef T type; };
		855	#define ecb_decltype(x) ecb_decltype_t<decltype (x)>::type
		856	#elif ECB_GCC_VERSION(3,0) || ECB_CLANG_VERSION(2,8)
		857	#define ecb_decltype(x) __typeof__ (x)
		858	#endif
		859
		860	#if _MSC_VER >= 1300
		861	#define ecb_deprecated __declspec (deprecated)
		862	#else
		863	#define ecb_deprecated ecb_attribute ((__deprecated__))
		864	#endif
		865
		866	#if _MSC_VER >= 1500
		867	#define ecb_deprecated_message(msg) __declspec (deprecated (msg))
		868	#elif ECB_GCC_VERSION(4,5)
		869	#define ecb_deprecated_message(msg) ecb_attribute ((__deprecated__ (msg))
		870	#else
		871	#define ecb_deprecated_message(msg) ecb_deprecated
		872	#endif
		873
		874	#if _MSC_VER >= 1400
		875	#define ecb_noinline __declspec (noinline)
		876	#else
		877	#define ecb_noinline ecb_attribute ((__noinline__))
		878	#endif
		879
		880	#define ecb_unused ecb_attribute ((__unused__))
		881	#define ecb_const ecb_attribute ((__const__))
		882	#define ecb_pure ecb_attribute ((__pure__))
		883
		884	#if ECB_C11 || __IBMC_NORETURN
		885	/* http://www-01.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/language_ref/noreturn.html */
		886	#define ecb_noreturn _Noreturn
		887	#elif ECB_CPP11
		888	#define ecb_noreturn [[noreturn]]
		889	#elif _MSC_VER >= 1200
		890	/* http://msdn.microsoft.com/en-us/library/k6ktzx3s.aspx */
		891	#define ecb_noreturn __declspec (noreturn)
		892	#else
		893	#define ecb_noreturn ecb_attribute ((__noreturn__))
		894	#endif
		895
		896	#if ECB_GCC_VERSION(4,3)
		897	#define ecb_artificial ecb_attribute ((__artificial__))
		898	#define ecb_hot ecb_attribute ((__hot__))
		899	#define ecb_cold ecb_attribute ((__cold__))
		900	#else
		901	#define ecb_artificial
		902	#define ecb_hot
		903	#define ecb_cold
		904	#endif
		905
		906	/* put around conditional expressions if you are very sure that the */
		907	/* expression is mostly true or mostly false. note that these return */
		908	/* booleans, not the expression. */
273	#define expect_false(expr) expect ((expr) != 0, 0)	909	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274	#define expect_true(expr) expect ((expr) != 0, 1)	910	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		911	/* for compatibility to the rest of the world */
		912	#define ecb_likely(expr) ecb_expect_true (expr)
		913	#define ecb_unlikely(expr) ecb_expect_false (expr)
		914
		915	/* count trailing zero bits and count # of one bits */
		916	#if ECB_GCC_VERSION(3,4) \
		917	|| (ECB_CLANG_BUILTIN(__builtin_clz) && ECB_CLANG_BUILTIN(__builtin_clzll) \
		918	&& ECB_CLANG_BUILTIN(__builtin_ctz) && ECB_CLANG_BUILTIN(__builtin_ctzll) \
		919	&& ECB_CLANG_BUILTIN(__builtin_popcount))
		920	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		921	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		922	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		923	#define ecb_ctz32(x) __builtin_ctz (x)
		924	#define ecb_ctz64(x) __builtin_ctzll (x)
		925	#define ecb_popcount32(x) __builtin_popcount (x)
		926	/* no popcountll */
		927	#else
		928	ecb_function_ ecb_const int ecb_ctz32 (uint32_t x);
		929	ecb_function_ ecb_const int
		930	ecb_ctz32 (uint32_t x)
		931	{
		932	#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
		933	unsigned long r;
		934	_BitScanForward (&r, x);
		935	return (int)r;
		936	#else
		937	int r = 0;
		938
		939	x &= ~x + 1; /* this isolates the lowest bit */
		940
		941	#if ECB_branchless_on_i386
		942	r += !!(x & 0xaaaaaaaa) << 0;
		943	r += !!(x & 0xcccccccc) << 1;
		944	r += !!(x & 0xf0f0f0f0) << 2;
		945	r += !!(x & 0xff00ff00) << 3;
		946	r += !!(x & 0xffff0000) << 4;
		947	#else
		948	if (x & 0xaaaaaaaa) r += 1;
		949	if (x & 0xcccccccc) r += 2;
		950	if (x & 0xf0f0f0f0) r += 4;
		951	if (x & 0xff00ff00) r += 8;
		952	if (x & 0xffff0000) r += 16;
		953	#endif
		954
		955	return r;
		956	#endif
		957	}
		958
		959	ecb_function_ ecb_const int ecb_ctz64 (uint64_t x);
		960	ecb_function_ ecb_const int
		961	ecb_ctz64 (uint64_t x)
		962	{
		963	#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
		964	unsigned long r;
		965	_BitScanForward64 (&r, x);
		966	return (int)r;
		967	#else
		968	int shift = x & 0xffffffff ? 0 : 32;
		969	return ecb_ctz32 (x >> shift) + shift;
		970	#endif
		971	}
		972
		973	ecb_function_ ecb_const int ecb_popcount32 (uint32_t x);
		974	ecb_function_ ecb_const int
		975	ecb_popcount32 (uint32_t x)
		976	{
		977	x -= (x >> 1) & 0x55555555;
		978	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		979	x = ((x >> 4) + x) & 0x0f0f0f0f;
		980	x *= 0x01010101;
		981
		982	return x >> 24;
		983	}
		984
		985	ecb_function_ ecb_const int ecb_ld32 (uint32_t x);
		986	ecb_function_ ecb_const int ecb_ld32 (uint32_t x)
		987	{
		988	#if 1400 <= _MSC_VER && (_M_IX86 || _M_X64 || _M_IA64 || _M_ARM)
		989	unsigned long r;
		990	_BitScanReverse (&r, x);
		991	return (int)r;
		992	#else
		993	int r = 0;
		994
		995	if (x >> 16) { x >>= 16; r += 16; }
		996	if (x >> 8) { x >>= 8; r += 8; }
		997	if (x >> 4) { x >>= 4; r += 4; }
		998	if (x >> 2) { x >>= 2; r += 2; }
		999	if (x >> 1) { r += 1; }
		1000
		1001	return r;
		1002	#endif
		1003	}
		1004
		1005	ecb_function_ ecb_const int ecb_ld64 (uint64_t x);
		1006	ecb_function_ ecb_const int ecb_ld64 (uint64_t x)
		1007	{
		1008	#if 1400 <= _MSC_VER && (_M_X64 || _M_IA64 || _M_ARM)
		1009	unsigned long r;
		1010	_BitScanReverse64 (&r, x);
		1011	return (int)r;
		1012	#else
		1013	int r = 0;
		1014
		1015	if (x >> 32) { x >>= 32; r += 32; }
		1016
		1017	return r + ecb_ld32 (x);
		1018	#endif
		1019	}
		1020	#endif
		1021
		1022	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x);
		1023	ecb_function_ ecb_const ecb_bool ecb_is_pot32 (uint32_t x) { return !(x & (x - 1)); }
		1024	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x);
		1025	ecb_function_ ecb_const ecb_bool ecb_is_pot64 (uint64_t x) { return !(x & (x - 1)); }
		1026
		1027	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x);
		1028	ecb_function_ ecb_const uint8_t ecb_bitrev8 (uint8_t x)
		1029	{
		1030	return ( (x * 0x0802U & 0x22110U)
		1031	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		1032	}
		1033
		1034	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x);
		1035	ecb_function_ ecb_const uint16_t ecb_bitrev16 (uint16_t x)
		1036	{
		1037	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		1038	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		1039	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		1040	x = ( x >> 8 ) | ( x << 8);
		1041
		1042	return x;
		1043	}
		1044
		1045	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x);
		1046	ecb_function_ ecb_const uint32_t ecb_bitrev32 (uint32_t x)
		1047	{
		1048	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		1049	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		1050	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		1051	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		1052	x = ( x >> 16 ) | ( x << 16);
		1053
		1054	return x;
		1055	}
		1056
		1057	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		1058	/* so for this version we are lazy */
		1059	ecb_function_ ecb_const int ecb_popcount64 (uint64_t x);
		1060	ecb_function_ ecb_const int
		1061	ecb_popcount64 (uint64_t x)
		1062	{
		1063	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		1064	}
		1065
		1066	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count);
		1067	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count);
		1068	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count);
		1069	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count);
		1070	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count);
		1071	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count);
		1072	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count);
		1073	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count);
		1074
		1075	ecb_inline ecb_const uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		1076	ecb_inline ecb_const uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		1077	ecb_inline ecb_const uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		1078	ecb_inline ecb_const uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		1079	ecb_inline ecb_const uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		1080	ecb_inline ecb_const uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		1081	ecb_inline ecb_const uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		1082	ecb_inline ecb_const uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		1083
		1084	#if ECB_GCC_VERSION(4,3) || (ECB_CLANG_BUILTIN(__builtin_bswap32) && ECB_CLANG_BUILTIN(__builtin_bswap64))
		1085	#if ECB_GCC_VERSION(4,8) || ECB_CLANG_BUILTIN(__builtin_bswap16)
		1086	#define ecb_bswap16(x) __builtin_bswap16 (x)
		1087	#else
		1088	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		1089	#endif
		1090	#define ecb_bswap32(x) __builtin_bswap32 (x)
		1091	#define ecb_bswap64(x) __builtin_bswap64 (x)
		1092	#elif _MSC_VER
		1093	#include <stdlib.h>
		1094	#define ecb_bswap16(x) ((uint16_t)_byteswap_ushort ((uint16_t)(x)))
		1095	#define ecb_bswap32(x) ((uint32_t)_byteswap_ulong ((uint32_t)(x)))
		1096	#define ecb_bswap64(x) ((uint64_t)_byteswap_uint64 ((uint64_t)(x)))
		1097	#else
		1098	ecb_function_ ecb_const uint16_t ecb_bswap16 (uint16_t x);
		1099	ecb_function_ ecb_const uint16_t
		1100	ecb_bswap16 (uint16_t x)
		1101	{
		1102	return ecb_rotl16 (x, 8);
		1103	}
		1104
		1105	ecb_function_ ecb_const uint32_t ecb_bswap32 (uint32_t x);
		1106	ecb_function_ ecb_const uint32_t
		1107	ecb_bswap32 (uint32_t x)
		1108	{
		1109	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		1110	}
		1111
		1112	ecb_function_ ecb_const uint64_t ecb_bswap64 (uint64_t x);
		1113	ecb_function_ ecb_const uint64_t
		1114	ecb_bswap64 (uint64_t x)
		1115	{
		1116	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		1117	}
		1118	#endif
		1119
		1120	#if ECB_GCC_VERSION(4,5) || ECB_CLANG_BUILTIN(__builtin_unreachable)
		1121	#define ecb_unreachable() __builtin_unreachable ()
		1122	#else
		1123	/* this seems to work fine, but gcc always emits a warning for it :/ */
		1124	ecb_inline ecb_noreturn void ecb_unreachable (void);
		1125	ecb_inline ecb_noreturn void ecb_unreachable (void) { }
		1126	#endif
		1127
		1128	/* try to tell the compiler that some condition is definitely true */
		1129	#define ecb_assume(cond) if (!(cond)) ecb_unreachable (); else 0
		1130
		1131	ecb_inline ecb_const uint32_t ecb_byteorder_helper (void);
		1132	ecb_inline ecb_const uint32_t
		1133	ecb_byteorder_helper (void)
		1134	{
		1135	/* the union code still generates code under pressure in gcc, */
		1136	/* but less than using pointers, and always seems to */
		1137	/* successfully return a constant. */
		1138	/* the reason why we have this horrible preprocessor mess */
		1139	/* is to avoid it in all cases, at least on common architectures */
		1140	/* or when using a recent enough gcc version (>= 4.6) */
		1141	#if (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) \
		1142	|| ((__i386 || __i386__ || _M_IX86 || ECB_GCC_AMD64 || ECB_MSVC_AMD64) && !__VOS__)
		1143	#define ECB_LITTLE_ENDIAN 1
		1144	return 0x44332211;
		1145	#elif (defined __BYTE_ORDER__ && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__) \
		1146	|| ((__AARCH64EB__ || __MIPSEB__ || __ARMEB__) && !__VOS__)
		1147	#define ECB_BIG_ENDIAN 1
		1148	return 0x11223344;
		1149	#else
		1150	union
		1151	{
		1152	uint8_t c[4];
		1153	uint32_t u;
		1154	} u = { 0x11, 0x22, 0x33, 0x44 };
		1155	return u.u;
		1156	#endif
		1157	}
		1158
		1159	ecb_inline ecb_const ecb_bool ecb_big_endian (void);
		1160	ecb_inline ecb_const ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11223344; }
		1161	ecb_inline ecb_const ecb_bool ecb_little_endian (void);
		1162	ecb_inline ecb_const ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44332211; }
		1163
		1164	#if ECB_GCC_VERSION(3,0) || ECB_C99
		1165	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		1166	#else
		1167	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		1168	#endif
		1169
		1170	#if ECB_CPP
		1171	template<typename T>
		1172	static inline T ecb_div_rd (T val, T div)
		1173	{
		1174	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		1175	}
		1176	template<typename T>
		1177	static inline T ecb_div_ru (T val, T div)
		1178	{
		1179	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		1180	}
		1181	#else
		1182	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		1183	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		1184	#endif
		1185
		1186	#if ecb_cplusplus_does_not_suck
		1187	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		1188	template<typename T, int N>
		1189	static inline int ecb_array_length (const T (&arr)[N])
		1190	{
		1191	return N;
		1192	}
		1193	#else
		1194	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		1195	#endif
		1196
		1197	ecb_function_ ecb_const uint32_t ecb_binary16_to_binary32 (uint32_t x);
		1198	ecb_function_ ecb_const uint32_t
		1199	ecb_binary16_to_binary32 (uint32_t x)
		1200	{
		1201	unsigned int s = (x & 0x8000) << (31 - 15);
		1202	int e = (x >> 10) & 0x001f;
		1203	unsigned int m = x & 0x03ff;
		1204
		1205	if (ecb_expect_false (e == 31))
		1206	/* infinity or NaN */
		1207	e = 255 - (127 - 15);
		1208	else if (ecb_expect_false (!e))
		1209	{
		1210	if (ecb_expect_true (!m))
		1211	/* zero, handled by code below by forcing e to 0 */
		1212	e = 0 - (127 - 15);
		1213	else
		1214	{
		1215	/* subnormal, renormalise */
		1216	unsigned int s = 10 - ecb_ld32 (m);
		1217
		1218	m = (m << s) & 0x3ff; /* mask implicit bit */
		1219	e -= s - 1;
		1220	}
		1221	}
		1222
		1223	/* e and m now are normalised, or zero, (or inf or nan) */
		1224	e += 127 - 15;
		1225
		1226	return s | (e << 23) | (m << (23 - 10));
		1227	}
		1228
		1229	ecb_function_ ecb_const uint16_t ecb_binary32_to_binary16 (uint32_t x);
		1230	ecb_function_ ecb_const uint16_t
		1231	ecb_binary32_to_binary16 (uint32_t x)
		1232	{
		1233	unsigned int s = (x >> 16) & 0x00008000; /* sign bit, the easy part */
		1234	unsigned int e = ((x >> 23) & 0x000000ff) - (127 - 15); /* the desired exponent */
		1235	unsigned int m = x & 0x007fffff;
		1236
		1237	x &= 0x7fffffff;
		1238
		1239	/* if it's within range of binary16 normals, use fast path */
		1240	if (ecb_expect_true (0x38800000 <= x && x <= 0x477fefff))
		1241	{
		1242	/* mantissa round-to-even */
		1243	m += 0x00000fff + ((m >> (23 - 10)) & 1);
		1244
		1245	/* handle overflow */
		1246	if (ecb_expect_false (m >= 0x00800000))
		1247	{
		1248	m >>= 1;
		1249	e += 1;
		1250	}
		1251
		1252	return s | (e << 10) | (m >> (23 - 10));
		1253	}
		1254
		1255	/* handle large numbers and infinity */
		1256	if (ecb_expect_true (0x477fefff < x && x <= 0x7f800000))
		1257	return s | 0x7c00;
		1258
		1259	/* handle zero, subnormals and small numbers */
		1260	if (ecb_expect_true (x < 0x38800000))
		1261	{
		1262	/* zero */
		1263	if (ecb_expect_true (!x))
		1264	return s;
		1265
		1266	/* handle subnormals */
		1267
		1268	/* too small, will be zero */
		1269	if (e < (14 - 24)) /* might not be sharp, but is good enough */
		1270	return s;
		1271
		1272	m |= 0x00800000; /* make implicit bit explicit */
		1273
		1274	/* very tricky - we need to round to the nearest e (+10) bit value */
		1275	{
		1276	unsigned int bits = 14 - e;
		1277	unsigned int half = (1 << (bits - 1)) - 1;
		1278	unsigned int even = (m >> bits) & 1;
		1279
		1280	/* if this overflows, we will end up with a normalised number */
		1281	m = (m + half + even) >> bits;
		1282	}
		1283
		1284	return s | m;
		1285	}
		1286
		1287	/* handle NaNs, preserve leftmost nan bits, but make sure we don't turn them into infinities */
		1288	m >>= 13;
		1289
		1290	return s | 0x7c00 | m | !m;
		1291	}
		1292
		1293	/*******************************************************************************/
		1294	/* floating point stuff, can be disabled by defining ECB_NO_LIBM */
		1295
		1296	/* basically, everything uses "ieee pure-endian" floating point numbers */
		1297	/* the only noteworthy exception is ancient armle, which uses order 43218765 */
		1298	#if 0 \
		1299	|| __i386 || __i386__ \
		1300	|| ECB_GCC_AMD64 \
		1301	|| __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__ \
		1302	|| defined __s390__ || defined __s390x__ \
		1303	|| defined __mips__ \
		1304	|| defined __alpha__ \
		1305	|| defined __hppa__ \
		1306	|| defined __ia64__ \
		1307	|| defined __m68k__ \
		1308	|| defined __m88k__ \
		1309	|| defined __sh__ \
		1310	|| defined _M_IX86 || defined ECB_MSVC_AMD64 || defined _M_IA64 \
		1311	|| (defined __arm__ && (defined __ARM_EABI__ || defined __EABI__ || defined __VFP_FP__ || defined _WIN32_WCE || defined __ANDROID__)) \
		1312	|| defined __aarch64__
		1313	#define ECB_STDFP 1
		1314	#include <string.h> /* for memcpy */
		1315	#else
		1316	#define ECB_STDFP 0
		1317	#endif
		1318
		1319	#ifndef ECB_NO_LIBM
		1320
		1321	#include <math.h> /* for frexp*, ldexp*, INFINITY, NAN */
		1322
		1323	/* only the oldest of old doesn't have this one. solaris. */
		1324	#ifdef INFINITY
		1325	#define ECB_INFINITY INFINITY
		1326	#else
		1327	#define ECB_INFINITY HUGE_VAL
		1328	#endif
		1329
		1330	#ifdef NAN
		1331	#define ECB_NAN NAN
		1332	#else
		1333	#define ECB_NAN ECB_INFINITY
		1334	#endif
		1335
		1336	#if ECB_C99 || _XOPEN_VERSION >= 600 || _POSIX_VERSION >= 200112L
		1337	#define ecb_ldexpf(x,e) ldexpf ((x), (e))
		1338	#define ecb_frexpf(x,e) frexpf ((x), (e))
		1339	#else
		1340	#define ecb_ldexpf(x,e) (float) ldexp ((double) (x), (e))
		1341	#define ecb_frexpf(x,e) (float) frexp ((double) (x), (e))
		1342	#endif
		1343
		1344	/* convert a float to ieee single/binary32 */
		1345	ecb_function_ ecb_const uint32_t ecb_float_to_binary32 (float x);
		1346	ecb_function_ ecb_const uint32_t
		1347	ecb_float_to_binary32 (float x)
		1348	{
		1349	uint32_t r;
		1350
		1351	#if ECB_STDFP
		1352	memcpy (&r, &x, 4);
		1353	#else
		1354	/* slow emulation, works for anything but -0 */
		1355	uint32_t m;
		1356	int e;
		1357
		1358	if (x == 0e0f ) return 0x00000000U;
		1359	if (x > +3.40282346638528860e+38f) return 0x7f800000U;
		1360	if (x < -3.40282346638528860e+38f) return 0xff800000U;
		1361	if (x != x ) return 0x7fbfffffU;
		1362
		1363	m = ecb_frexpf (x, &e) * 0x1000000U;
		1364
		1365	r = m & 0x80000000U;
		1366
		1367	if (r)
		1368	m = -m;
		1369
		1370	if (e <= -126)
		1371	{
		1372	m &= 0xffffffU;
		1373	m >>= (-125 - e);
		1374	e = -126;
		1375	}
		1376
		1377	r |= (e + 126) << 23;
		1378	r |= m & 0x7fffffU;
		1379	#endif
		1380
		1381	return r;
		1382	}
		1383
		1384	/* converts an ieee single/binary32 to a float */
		1385	ecb_function_ ecb_const float ecb_binary32_to_float (uint32_t x);
		1386	ecb_function_ ecb_const float
		1387	ecb_binary32_to_float (uint32_t x)
		1388	{
		1389	float r;
		1390
		1391	#if ECB_STDFP
		1392	memcpy (&r, &x, 4);
		1393	#else
		1394	/* emulation, only works for normals and subnormals and +0 */
		1395	int neg = x >> 31;
		1396	int e = (x >> 23) & 0xffU;
		1397
		1398	x &= 0x7fffffU;
		1399
		1400	if (e)
		1401	x |= 0x800000U;
		1402	else
		1403	e = 1;
		1404
		1405	/* we distrust ldexpf a bit and do the 2**-24 scaling by an extra multiply */
		1406	r = ecb_ldexpf (x * (0.5f / 0x800000U), e - 126);
		1407
		1408	r = neg ? -r : r;
		1409	#endif
		1410
		1411	return r;
		1412	}
		1413
		1414	/* convert a double to ieee double/binary64 */
		1415	ecb_function_ ecb_const uint64_t ecb_double_to_binary64 (double x);
		1416	ecb_function_ ecb_const uint64_t
		1417	ecb_double_to_binary64 (double x)
		1418	{
		1419	uint64_t r;
		1420
		1421	#if ECB_STDFP
		1422	memcpy (&r, &x, 8);
		1423	#else
		1424	/* slow emulation, works for anything but -0 */
		1425	uint64_t m;
		1426	int e;
		1427
		1428	if (x == 0e0 ) return 0x0000000000000000U;
		1429	if (x > +1.79769313486231470e+308) return 0x7ff0000000000000U;
		1430	if (x < -1.79769313486231470e+308) return 0xfff0000000000000U;
		1431	if (x != x ) return 0X7ff7ffffffffffffU;
		1432
		1433	m = frexp (x, &e) * 0x20000000000000U;
		1434
		1435	r = m & 0x8000000000000000;;
		1436
		1437	if (r)
		1438	m = -m;
		1439
		1440	if (e <= -1022)
		1441	{
		1442	m &= 0x1fffffffffffffU;
		1443	m >>= (-1021 - e);
		1444	e = -1022;
		1445	}
		1446
		1447	r |= ((uint64_t)(e + 1022)) << 52;
		1448	r |= m & 0xfffffffffffffU;
		1449	#endif
		1450
		1451	return r;
		1452	}
		1453
		1454	/* converts an ieee double/binary64 to a double */
		1455	ecb_function_ ecb_const double ecb_binary64_to_double (uint64_t x);
		1456	ecb_function_ ecb_const double
		1457	ecb_binary64_to_double (uint64_t x)
		1458	{
		1459	double r;
		1460
		1461	#if ECB_STDFP
		1462	memcpy (&r, &x, 8);
		1463	#else
		1464	/* emulation, only works for normals and subnormals and +0 */
		1465	int neg = x >> 63;
		1466	int e = (x >> 52) & 0x7ffU;
		1467
		1468	x &= 0xfffffffffffffU;
		1469
		1470	if (e)
		1471	x |= 0x10000000000000U;
		1472	else
		1473	e = 1;
		1474
		1475	/* we distrust ldexp a bit and do the 2**-53 scaling by an extra multiply */
		1476	r = ldexp (x * (0.5 / 0x10000000000000U), e - 1022);
		1477
		1478	r = neg ? -r : r;
		1479	#endif
		1480
		1481	return r;
		1482	}
		1483
		1484	/* convert a float to ieee half/binary16 */
		1485	ecb_function_ ecb_const uint16_t ecb_float_to_binary16 (float x);
		1486	ecb_function_ ecb_const uint16_t
		1487	ecb_float_to_binary16 (float x)
		1488	{
		1489	return ecb_binary32_to_binary16 (ecb_float_to_binary32 (x));
		1490	}
		1491
		1492	/* convert an ieee half/binary16 to float */
		1493	ecb_function_ ecb_const float ecb_binary16_to_float (uint16_t x);
		1494	ecb_function_ ecb_const float
		1495	ecb_binary16_to_float (uint16_t x)
		1496	{
		1497	return ecb_binary32_to_float (ecb_binary16_to_binary32 (x));
		1498	}
		1499
		1500	#endif
		1501
		1502	#endif
		1503
		1504	/* ECB.H END */
		1505
		1506	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
		1507	/* if your architecture doesn't need memory fences, e.g. because it is
		1508	* single-cpu/core, or if you use libev in a project that doesn't use libev
		1509	* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
		1510	* libev, in which cases the memory fences become nops.
		1511	* alternatively, you can remove this #error and link against libpthread,
		1512	* which will then provide the memory fences.
		1513	*/
		1514	# error "memory fences not defined for your architecture, please report"
		1515	#endif
		1516
		1517	#ifndef ECB_MEMORY_FENCE
		1518	# define ECB_MEMORY_FENCE do { } while (0)
		1519	# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		1520	# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		1521	#endif
		1522
		1523	#define expect_false(cond) ecb_expect_false (cond)
		1524	#define expect_true(cond) ecb_expect_true (cond)
		1525	#define noinline ecb_noinline
		1526
275	#define inline_size static inline	1527	#define inline_size ecb_inline
276		1528
277	#if EV_MINIMAL	1529	#if EV_FEATURE_CODE
278	# define inline_speed static noinline
279	#else
280	# define inline_speed static inline	1530	# define inline_speed ecb_inline
		1531	#else
		1532	# define inline_speed noinline static
281	#endif	1533	#endif
282		1534
283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	1535	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		1536
		1537	#if EV_MINPRI == EV_MAXPRI
		1538	# define ABSPRI(w) (((W)w), 0)
		1539	#else
284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	1540	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		1541	#endif
285		1542
286	#define EMPTY /* required for microsofts broken pseudo-c compiler */	1543	#define EMPTY /* required for microsofts broken pseudo-c compiler */
287	#define EMPTY2(a,b) /* used to suppress some warnings */	1544	#define EMPTY2(a,b) /* used to suppress some warnings */
288		1545
289	typedef ev_watcher *W;	1546	typedef ev_watcher *W;
290	typedef ev_watcher_list *WL;	1547	typedef ev_watcher_list *WL;
291	typedef ev_watcher_time *WT;	1548	typedef ev_watcher_time *WT;
292		1549
		1550	#define ev_active(w) ((W)(w))->active
		1551	#define ev_at(w) ((WT)(w))->at
		1552
		1553	#if EV_USE_REALTIME
		1554	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		1555	/* giving it a reasonably high chance of working on typical architectures */
		1556	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		1557	#endif
		1558
293	#if EV_USE_MONOTONIC	1559	#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? */	1560	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		1561	#endif
		1562
		1563	#ifndef EV_FD_TO_WIN32_HANDLE
		1564	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		1565	#endif
		1566	#ifndef EV_WIN32_HANDLE_TO_FD
		1567	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		1568	#endif
		1569	#ifndef EV_WIN32_CLOSE_FD
		1570	# define EV_WIN32_CLOSE_FD(fd) close (fd)
297	#endif	1571	#endif
298		1572
299	#ifdef _WIN32	1573	#ifdef _WIN32
300	# include "ev_win32.c"	1574	# include "ev_win32.c"
301	#endif	1575	#endif
302		1576
303	/*****************************************************************************/	1577	/*****************************************************************************/
304		1578
		1579	/* define a suitable floor function (only used by periodics atm) */
		1580
		1581	#if EV_USE_FLOOR
		1582	# include <math.h>
		1583	# define ev_floor(v) floor (v)
		1584	#else
		1585
		1586	#include <float.h>
		1587
		1588	/* a floor() replacement function, should be independent of ev_tstamp type */
		1589	noinline
		1590	static ev_tstamp
		1591	ev_floor (ev_tstamp v)
		1592	{
		1593	/* the choice of shift factor is not terribly important */
		1594	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		1595	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		1596	#else
		1597	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		1598	#endif
		1599
		1600	/* argument too large for an unsigned long? */
		1601	if (expect_false (v >= shift))
		1602	{
		1603	ev_tstamp f;
		1604
		1605	if (v == v - 1.)
		1606	return v; /* very large number */
		1607
		1608	f = shift * ev_floor (v * (1. / shift));
		1609	return f + ev_floor (v - f);
		1610	}
		1611
		1612	/* special treatment for negative args? */
		1613	if (expect_false (v < 0.))
		1614	{
		1615	ev_tstamp f = -ev_floor (-v);
		1616
		1617	return f - (f == v ? 0 : 1);
		1618	}
		1619
		1620	/* fits into an unsigned long */
		1621	return (unsigned long)v;
		1622	}
		1623
		1624	#endif
		1625
		1626	/*****************************************************************************/
		1627
		1628	#ifdef __linux
		1629	# include <sys/utsname.h>
		1630	#endif
		1631
		1632	noinline ecb_cold
		1633	static unsigned int
		1634	ev_linux_version (void)
		1635	{
		1636	#ifdef __linux
		1637	unsigned int v = 0;
		1638	struct utsname buf;
		1639	int i;
		1640	char *p = buf.release;
		1641
		1642	if (uname (&buf))
		1643	return 0;
		1644
		1645	for (i = 3+1; --i; )
		1646	{
		1647	unsigned int c = 0;
		1648
		1649	for (;;)
		1650	{
		1651	if (*p >= '0' && *p <= '9')
		1652	c = c * 10 + *p++ - '0';
		1653	else
		1654	{
		1655	p += *p == '.';
		1656	break;
		1657	}
		1658	}
		1659
		1660	v = (v << 8) | c;
		1661	}
		1662
		1663	return v;
		1664	#else
		1665	return 0;
		1666	#endif
		1667	}
		1668
		1669	/*****************************************************************************/
		1670
		1671	#if EV_AVOID_STDIO
		1672	noinline ecb_cold
		1673	static void
		1674	ev_printerr (const char *msg)
		1675	{
		1676	write (STDERR_FILENO, msg, strlen (msg));
		1677	}
		1678	#endif
		1679
305	static void (*syserr_cb)(const char *msg);	1680	static void (*syserr_cb)(const char *msg) EV_THROW;
306		1681
		1682	ecb_cold
307	void	1683	void
308	ev_set_syserr_cb (void (*cb)(const char *msg))	1684	ev_set_syserr_cb (void (*cb)(const char *msg) EV_THROW) EV_THROW
309	{	1685	{
310	syserr_cb = cb;	1686	syserr_cb = cb;
311	}	1687	}
312		1688
313	static void noinline	1689	noinline ecb_cold
		1690	static void
314	syserr (const char *msg)	1691	ev_syserr (const char *msg)
315	{	1692	{
316	if (!msg)	1693	if (!msg)
317	msg = "(libev) system error";	1694	msg = "(libev) system error";
318		1695
319	if (syserr_cb)	1696	if (syserr_cb)
320	syserr_cb (msg);	1697	syserr_cb (msg);
321	else	1698	else
322	{	1699	{
		1700	#if EV_AVOID_STDIO
		1701	ev_printerr (msg);
		1702	ev_printerr (": ");
		1703	ev_printerr (strerror (errno));
		1704	ev_printerr ("\n");
		1705	#else
323	perror (msg);	1706	perror (msg);
		1707	#endif
324	abort ();	1708	abort ();
325	}	1709	}
326	}	1710	}
327		1711
		1712	static void *
		1713	ev_realloc_emul (void *ptr, long size) EV_THROW
		1714	{
		1715	/* some systems, notably openbsd and darwin, fail to properly
		1716	* implement realloc (x, 0) (as required by both ansi c-89 and
		1717	* the single unix specification, so work around them here.
		1718	* recently, also (at least) fedora and debian started breaking it,
		1719	* despite documenting it otherwise.
		1720	*/
		1721
		1722	if (size)
		1723	return realloc (ptr, size);
		1724
		1725	free (ptr);
		1726	return 0;
		1727	}
		1728
328	static void *(*alloc)(void *ptr, long size);	1729	static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
329		1730
		1731	ecb_cold
330	void	1732	void
331	ev_set_allocator (void *(*cb)(void *ptr, long size))	1733	ev_set_allocator (void *(*cb)(void *ptr, long size) EV_THROW) EV_THROW
332	{	1734	{
333	alloc = cb;	1735	alloc = cb;
334	}	1736	}
335		1737
336	inline_speed void *	1738	inline_speed void *
337	ev_realloc (void *ptr, long size)	1739	ev_realloc (void *ptr, long size)
338	{	1740	{
339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	1741	ptr = alloc (ptr, size);
340		1742
341	if (!ptr && size)	1743	if (!ptr && size)
342	{	1744	{
		1745	#if EV_AVOID_STDIO
		1746	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		1747	#else
343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	1748	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		1749	#endif
344	abort ();	1750	abort ();
345	}	1751	}
346		1752
347	return ptr;	1753	return ptr;
348	}	1754	}
…		…
350	#define ev_malloc(size) ev_realloc (0, (size))	1756	#define ev_malloc(size) ev_realloc (0, (size))
351	#define ev_free(ptr) ev_realloc ((ptr), 0)	1757	#define ev_free(ptr) ev_realloc ((ptr), 0)
352		1758
353	/*****************************************************************************/	1759	/*****************************************************************************/
354		1760
		1761	/* set in reify when reification needed */
		1762	#define EV_ANFD_REIFY 1
		1763
		1764	/* file descriptor info structure */
355	typedef struct	1765	typedef struct
356	{	1766	{
357	WL head;	1767	WL head;
358	unsigned char events;	1768	unsigned char events; /* the events watched for */
		1769	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		1770	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359	unsigned char reify;	1771	unsigned char unused;
		1772	#if EV_USE_EPOLL
		1773	unsigned int egen; /* generation counter to counter epoll bugs */
		1774	#endif
360	#if EV_SELECT_IS_WINSOCKET	1775	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361	SOCKET handle;	1776	SOCKET handle;
362	#endif	1777	#endif
		1778	#if EV_USE_IOCP
		1779	OVERLAPPED or, ow;
		1780	#endif
363	} ANFD;	1781	} ANFD;
364		1782
		1783	/* stores the pending event set for a given watcher */
365	typedef struct	1784	typedef struct
366	{	1785	{
367	W w;	1786	W w;
368	int events;	1787	int events; /* the pending event set for the given watcher */
369	} ANPENDING;	1788	} ANPENDING;
370		1789
371	#if EV_USE_INOTIFY	1790	#if EV_USE_INOTIFY
		1791	/* hash table entry per inotify-id */
372	typedef struct	1792	typedef struct
373	{	1793	{
374	WL head;	1794	WL head;
375	} ANFS;	1795	} ANFS;
		1796	#endif
		1797
		1798	/* Heap Entry */
		1799	#if EV_HEAP_CACHE_AT
		1800	/* a heap element */
		1801	typedef struct {
		1802	ev_tstamp at;
		1803	WT w;
		1804	} ANHE;
		1805
		1806	#define ANHE_w(he) (he).w /* access watcher, read-write */
		1807	#define ANHE_at(he) (he).at /* access cached at, read-only */
		1808	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		1809	#else
		1810	/* a heap element */
		1811	typedef WT ANHE;
		1812
		1813	#define ANHE_w(he) (he)
		1814	#define ANHE_at(he) (he)->at
		1815	#define ANHE_at_cache(he)
376	#endif	1816	#endif
377		1817
378	#if EV_MULTIPLICITY	1818	#if EV_MULTIPLICITY
379		1819
380	struct ev_loop	1820	struct ev_loop
…		…
386	#undef VAR	1826	#undef VAR
387	};	1827	};
388	#include "ev_wrap.h"	1828	#include "ev_wrap.h"
389		1829
390	static struct ev_loop default_loop_struct;	1830	static struct ev_loop default_loop_struct;
391	struct ev_loop *ev_default_loop_ptr;	1831	EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
392		1832
393	#else	1833	#else
394		1834
395	ev_tstamp ev_rt_now;	1835	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;	1836	#define VAR(name,decl) static decl;
397	#include "ev_vars.h"	1837	#include "ev_vars.h"
398	#undef VAR	1838	#undef VAR
399		1839
400	static int ev_default_loop_ptr;	1840	static int ev_default_loop_ptr;
401		1841
402	#endif	1842	#endif
403		1843
		1844	#if EV_FEATURE_API
		1845	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		1846	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		1847	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		1848	#else
		1849	# define EV_RELEASE_CB (void)0
		1850	# define EV_ACQUIRE_CB (void)0
		1851	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		1852	#endif
		1853
		1854	#define EVBREAK_RECURSE 0x80
		1855
404	/*****************************************************************************/	1856	/*****************************************************************************/
405		1857
		1858	#ifndef EV_HAVE_EV_TIME
406	ev_tstamp	1859	ev_tstamp
407	ev_time (void)	1860	ev_time (void) EV_THROW
408	{	1861	{
409	#if EV_USE_REALTIME	1862	#if EV_USE_REALTIME
		1863	if (expect_true (have_realtime))
		1864	{
410	struct timespec ts;	1865	struct timespec ts;
411	clock_gettime (CLOCK_REALTIME, &ts);	1866	clock_gettime (CLOCK_REALTIME, &ts);
412	return ts.tv_sec + ts.tv_nsec * 1e-9;	1867	return ts.tv_sec + ts.tv_nsec * 1e-9;
413	#else	1868	}
		1869	#endif
		1870
414	struct timeval tv;	1871	struct timeval tv;
415	gettimeofday (&tv, 0);	1872	gettimeofday (&tv, 0);
416	return tv.tv_sec + tv.tv_usec * 1e-6;	1873	return tv.tv_sec + tv.tv_usec * 1e-6;
417	#endif
418	}	1874	}
		1875	#endif
419		1876
420	ev_tstamp inline_size	1877	inline_size ev_tstamp
421	get_clock (void)	1878	get_clock (void)
422	{	1879	{
423	#if EV_USE_MONOTONIC	1880	#if EV_USE_MONOTONIC
424	if (expect_true (have_monotonic))	1881	if (expect_true (have_monotonic))
425	{	1882	{
…		…
432	return ev_time ();	1889	return ev_time ();
433	}	1890	}
434		1891
435	#if EV_MULTIPLICITY	1892	#if EV_MULTIPLICITY
436	ev_tstamp	1893	ev_tstamp
437	ev_now (EV_P)	1894	ev_now (EV_P) EV_THROW
438	{	1895	{
439	return ev_rt_now;	1896	return ev_rt_now;
440	}	1897	}
441	#endif	1898	#endif
442		1899
443	void	1900	void
444	ev_sleep (ev_tstamp delay)	1901	ev_sleep (ev_tstamp delay) EV_THROW
445	{	1902	{
446	if (delay > 0.)	1903	if (delay > 0.)
447	{	1904	{
448	#if EV_USE_NANOSLEEP	1905	#if EV_USE_NANOSLEEP
449	struct timespec ts;	1906	struct timespec ts;
450		1907
451	ts.tv_sec = (time_t)delay;	1908	EV_TS_SET (ts, delay);
452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454	nanosleep (&ts, 0);	1909	nanosleep (&ts, 0);
455	#elif defined(_WIN32)	1910	#elif defined _WIN32
456	Sleep ((unsigned long)(delay * 1e3));	1911	Sleep ((unsigned long)(delay * 1e3));
457	#else	1912	#else
458	struct timeval tv;	1913	struct timeval tv;
459		1914
460	tv.tv_sec = (time_t)delay;	1915	/* 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);	1916	/* something not guaranteed by newer posix versions, but guaranteed */
462		1917	/* by older ones */
		1918	EV_TV_SET (tv, delay);
463	select (0, 0, 0, 0, &tv);	1919	select (0, 0, 0, 0, &tv);
464	#endif	1920	#endif
465	}	1921	}
466	}	1922	}
467		1923
468	/*****************************************************************************/	1924	/*****************************************************************************/
469		1925
470	int inline_size	1926	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		1927
		1928	/* find a suitable new size for the given array, */
		1929	/* hopefully by rounding to a nice-to-malloc size */
		1930	inline_size int
471	array_nextsize (int elem, int cur, int cnt)	1931	array_nextsize (int elem, int cur, int cnt)
472	{	1932	{
473	int ncur = cur + 1;	1933	int ncur = cur + 1;
474		1934
475	do	1935	do
476	ncur <<= 1;	1936	ncur <<= 1;
477	while (cnt > ncur);	1937	while (cnt > ncur);
478		1938
479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	1939	/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
480	if (elem * ncur > 4096)	1940	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481	{	1941	{
482	ncur *= elem;	1942	ncur *= elem;
483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	1943	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484	ncur = ncur - sizeof (void *) * 4;	1944	ncur = ncur - sizeof (void *) * 4;
485	ncur /= elem;	1945	ncur /= elem;
486	}	1946	}
487		1947
488	return ncur;	1948	return ncur;
489	}	1949	}
490		1950
491	static noinline void *	1951	noinline ecb_cold
		1952	static void *
492	array_realloc (int elem, void *base, int *cur, int cnt)	1953	array_realloc (int elem, void *base, int *cur, int cnt)
493	{	1954	{
494	*cur = array_nextsize (elem, *cur, cnt);	1955	*cur = array_nextsize (elem, *cur, cnt);
495	return ev_realloc (base, elem * *cur);	1956	return ev_realloc (base, elem * *cur);
496	}	1957	}
		1958
		1959	#define array_init_zero(base,count) \
		1960	memset ((void *)(base), 0, sizeof (*(base)) * (count))
497		1961
498	#define array_needsize(type,base,cur,cnt,init) \	1962	#define array_needsize(type,base,cur,cnt,init) \
499	if (expect_false ((cnt) > (cur))) \	1963	if (expect_false ((cnt) > (cur))) \
500	{ \	1964	{ \
501	int ocur_ = (cur); \	1965	ecb_unused int ocur_ = (cur); \
502	(base) = (type *)array_realloc \	1966	(base) = (type *)array_realloc \
503	(sizeof (type), (base), &(cur), (cnt)); \	1967	(sizeof (type), (base), &(cur), (cnt)); \
504	init ((base) + (ocur_), (cur) - ocur_); \	1968	init ((base) + (ocur_), (cur) - ocur_); \
505	}	1969	}
506		1970
…		…
513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	1977	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514	}	1978	}
515	#endif	1979	#endif
516		1980
517	#define array_free(stem, idx) \	1981	#define array_free(stem, idx) \
518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	1982	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519		1983
520	/*****************************************************************************/	1984	/*****************************************************************************/
521		1985
		1986	/* dummy callback for pending events */
522	void noinline	1987	noinline
		1988	static void
		1989	pendingcb (EV_P_ ev_prepare *w, int revents)
		1990	{
		1991	}
		1992
		1993	noinline
		1994	void
523	ev_feed_event (EV_P_ void *w, int revents)	1995	ev_feed_event (EV_P_ void *w, int revents) EV_THROW
524	{	1996	{
525	W w_ = (W)w;	1997	W w_ = (W)w;
526	int pri = ABSPRI (w_);	1998	int pri = ABSPRI (w_);
527		1999
528	if (expect_false (w_->pending))	2000	if (expect_false (w_->pending))
…		…
532	w_->pending = ++pendingcnt [pri];	2004	w_->pending = ++pendingcnt [pri];
533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	2005	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534	pendings [pri][w_->pending - 1].w = w_;	2006	pendings [pri][w_->pending - 1].w = w_;
535	pendings [pri][w_->pending - 1].events = revents;	2007	pendings [pri][w_->pending - 1].events = revents;
536	}	2008	}
537	}
538		2009
539	void inline_speed	2010	pendingpri = NUMPRI - 1;
		2011	}
		2012
		2013	inline_speed void
		2014	feed_reverse (EV_P_ W w)
		2015	{
		2016	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		2017	rfeeds [rfeedcnt++] = w;
		2018	}
		2019
		2020	inline_size void
		2021	feed_reverse_done (EV_P_ int revents)
		2022	{
		2023	do
		2024	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		2025	while (rfeedcnt);
		2026	}
		2027
		2028	inline_speed void
540	queue_events (EV_P_ W *events, int eventcnt, int type)	2029	queue_events (EV_P_ W *events, int eventcnt, int type)
541	{	2030	{
542	int i;	2031	int i;
543		2032
544	for (i = 0; i < eventcnt; ++i)	2033	for (i = 0; i < eventcnt; ++i)
545	ev_feed_event (EV_A_ events [i], type);	2034	ev_feed_event (EV_A_ events [i], type);
546	}	2035	}
547		2036
548	/*****************************************************************************/	2037	/*****************************************************************************/
549		2038
550	void inline_size	2039	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)	2040	fd_event_nocheck (EV_P_ int fd, int revents)
565	{	2041	{
566	ANFD *anfd = anfds + fd;	2042	ANFD *anfd = anfds + fd;
567	ev_io *w;	2043	ev_io *w;
568		2044
569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	2045	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
573	if (ev)	2049	if (ev)
574	ev_feed_event (EV_A_ (W)w, ev);	2050	ev_feed_event (EV_A_ (W)w, ev);
575	}	2051	}
576	}	2052	}
577		2053
		2054	/* do not submit kernel events for fds that have reify set */
		2055	/* because that means they changed while we were polling for new events */
		2056	inline_speed void
		2057	fd_event (EV_P_ int fd, int revents)
		2058	{
		2059	ANFD *anfd = anfds + fd;
		2060
		2061	if (expect_true (!anfd->reify))
		2062	fd_event_nocheck (EV_A_ fd, revents);
		2063	}
		2064
578	void	2065	void
579	ev_feed_fd_event (EV_P_ int fd, int revents)	2066	ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
580	{	2067	{
581	if (fd >= 0 && fd < anfdmax)	2068	if (fd >= 0 && fd < anfdmax)
582	fd_event (EV_A_ fd, revents);	2069	fd_event_nocheck (EV_A_ fd, revents);
583	}	2070	}
584		2071
585	void inline_size	2072	/* make sure the external fd watch events are in-sync */
		2073	/* with the kernel/libev internal state */
		2074	inline_size void
586	fd_reify (EV_P)	2075	fd_reify (EV_P)
587	{	2076	{
588	int i;	2077	int i;
		2078
		2079	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		2080	for (i = 0; i < fdchangecnt; ++i)
		2081	{
		2082	int fd = fdchanges [i];
		2083	ANFD *anfd = anfds + fd;
		2084
		2085	if (anfd->reify & EV__IOFDSET && anfd->head)
		2086	{
		2087	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		2088
		2089	if (handle != anfd->handle)
		2090	{
		2091	unsigned long arg;
		2092
		2093	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		2094
		2095	/* handle changed, but fd didn't - we need to do it in two steps */
		2096	backend_modify (EV_A_ fd, anfd->events, 0);
		2097	anfd->events = 0;
		2098	anfd->handle = handle;
		2099	}
		2100	}
		2101	}
		2102	#endif
589		2103
590	for (i = 0; i < fdchangecnt; ++i)	2104	for (i = 0; i < fdchangecnt; ++i)
591	{	2105	{
592	int fd = fdchanges [i];	2106	int fd = fdchanges [i];
593	ANFD *anfd = anfds + fd;	2107	ANFD *anfd = anfds + fd;
594	ev_io *w;	2108	ev_io *w;
595		2109
596	unsigned char events = 0;	2110	unsigned char o_events = anfd->events;
		2111	unsigned char o_reify = anfd->reify;
597		2112
598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	2113	anfd->reify = 0;
599	events |= (unsigned char)w->events;
600		2114
601	#if EV_SELECT_IS_WINSOCKET	2115	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602	if (events)
603	{	2116	{
604	unsigned long argp;	2117	anfd->events = 0;
605	#ifdef EV_FD_TO_WIN32_HANDLE	2118
606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	2119	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
607	#else	2120	anfd->events |= (unsigned char)w->events;
608	anfd->handle = _get_osfhandle (fd);	2121
609	#endif	2122	if (o_events != anfd->events)
610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	2123	o_reify = EV__IOFDSET; /* actually |= */
611	}	2124	}
612	#endif
613		2125
614	{	2126	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);	2127	backend_modify (EV_A_ fd, o_events, anfd->events);
623	}
624	}	2128	}
625		2129
626	fdchangecnt = 0;	2130	fdchangecnt = 0;
627	}	2131	}
628		2132
		2133	/* something about the given fd changed */
629	void inline_size	2134	inline_size
		2135	void
630	fd_change (EV_P_ int fd, int flags)	2136	fd_change (EV_P_ int fd, int flags)
631	{	2137	{
632	unsigned char reify = anfds [fd].reify;	2138	unsigned char reify = anfds [fd].reify;
633	anfds [fd].reify |= flags;	2139	anfds [fd].reify |= flags;
634		2140
…		…
638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	2144	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639	fdchanges [fdchangecnt - 1] = fd;	2145	fdchanges [fdchangecnt - 1] = fd;
640	}	2146	}
641	}	2147	}
642		2148
643	void inline_speed	2149	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		2150	inline_speed ecb_cold void
644	fd_kill (EV_P_ int fd)	2151	fd_kill (EV_P_ int fd)
645	{	2152	{
646	ev_io *w;	2153	ev_io *w;
647		2154
648	while ((w = (ev_io *)anfds [fd].head))	2155	while ((w = (ev_io *)anfds [fd].head))
…		…
650	ev_io_stop (EV_A_ w);	2157	ev_io_stop (EV_A_ w);
651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	2158	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652	}	2159	}
653	}	2160	}
654		2161
655	int inline_size	2162	/* check whether the given fd is actually valid, for error recovery */
		2163	inline_size ecb_cold int
656	fd_valid (int fd)	2164	fd_valid (int fd)
657	{	2165	{
658	#ifdef _WIN32	2166	#ifdef _WIN32
659	return _get_osfhandle (fd) != -1;	2167	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660	#else	2168	#else
661	return fcntl (fd, F_GETFD) != -1;	2169	return fcntl (fd, F_GETFD) != -1;
662	#endif	2170	#endif
663	}	2171	}
664		2172
665	/* called on EBADF to verify fds */	2173	/* called on EBADF to verify fds */
666	static void noinline	2174	noinline ecb_cold
		2175	static void
667	fd_ebadf (EV_P)	2176	fd_ebadf (EV_P)
668	{	2177	{
669	int fd;	2178	int fd;
670		2179
671	for (fd = 0; fd < anfdmax; ++fd)	2180	for (fd = 0; fd < anfdmax; ++fd)
672	if (anfds [fd].events)	2181	if (anfds [fd].events)
673	if (!fd_valid (fd) == -1 && errno == EBADF)	2182	if (!fd_valid (fd) && errno == EBADF)
674	fd_kill (EV_A_ fd);	2183	fd_kill (EV_A_ fd);
675	}	2184	}
676		2185
677	/* called on ENOMEM in select/poll to kill some fds and retry */	2186	/* called on ENOMEM in select/poll to kill some fds and retry */
678	static void noinline	2187	noinline ecb_cold
		2188	static void
679	fd_enomem (EV_P)	2189	fd_enomem (EV_P)
680	{	2190	{
681	int fd;	2191	int fd;
682		2192
683	for (fd = anfdmax; fd--; )	2193	for (fd = anfdmax; fd--; )
684	if (anfds [fd].events)	2194	if (anfds [fd].events)
685	{	2195	{
686	fd_kill (EV_A_ fd);	2196	fd_kill (EV_A_ fd);
687	return;	2197	break;
688	}	2198	}
689	}	2199	}
690		2200
691	/* usually called after fork if backend needs to re-arm all fds from scratch */	2201	/* usually called after fork if backend needs to re-arm all fds from scratch */
692	static void noinline	2202	noinline
		2203	static void
693	fd_rearm_all (EV_P)	2204	fd_rearm_all (EV_P)
694	{	2205	{
695	int fd;	2206	int fd;
696		2207
697	for (fd = 0; fd < anfdmax; ++fd)	2208	for (fd = 0; fd < anfdmax; ++fd)
698	if (anfds [fd].events)	2209	if (anfds [fd].events)
699	{	2210	{
700	anfds [fd].events = 0;	2211	anfds [fd].events = 0;
		2212	anfds [fd].emask = 0;
701	fd_change (EV_A_ fd, EV_IOFDSET | 1);	2213	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702	}	2214	}
703	}	2215	}
704		2216
705	/*****************************************************************************/	2217	/* used to prepare libev internal fd's */
706		2218	/* this is not fork-safe */
707	void inline_speed	2219	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)	2220	fd_intern (int fd)
792	{	2221	{
793	#ifdef _WIN32	2222	#ifdef _WIN32
794	int arg = 1;	2223	unsigned long arg = 1;
795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	2224	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796	#else	2225	#else
797	fcntl (fd, F_SETFD, FD_CLOEXEC);	2226	fcntl (fd, F_SETFD, FD_CLOEXEC);
798	fcntl (fd, F_SETFL, O_NONBLOCK);	2227	fcntl (fd, F_SETFL, O_NONBLOCK);
799	#endif	2228	#endif
800	}	2229	}
801		2230
802	static void noinline	2231	/*****************************************************************************/
		2232
		2233	/*
		2234	* the heap functions want a real array index. array index 0 is guaranteed to not
		2235	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		2236	* the branching factor of the d-tree.
		2237	*/
		2238
		2239	/*
		2240	* at the moment we allow libev the luxury of two heaps,
		2241	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		2242	* which is more cache-efficient.
		2243	* the difference is about 5% with 50000+ watchers.
		2244	*/
		2245	#if EV_USE_4HEAP
		2246
		2247	#define DHEAP 4
		2248	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		2249	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		2250	#define UPHEAP_DONE(p,k) ((p) == (k))
		2251
		2252	/* away from the root */
		2253	inline_speed void
		2254	downheap (ANHE *heap, int N, int k)
		2255	{
		2256	ANHE he = heap [k];
		2257	ANHE *E = heap + N + HEAP0;
		2258
		2259	for (;;)
		2260	{
		2261	ev_tstamp minat;
		2262	ANHE *minpos;
		2263	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		2264
		2265	/* find minimum child */
		2266	if (expect_true (pos + DHEAP - 1 < E))
		2267	{
		2268	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		2269	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		2270	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		2271	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		2272	}
		2273	else if (pos < E)
		2274	{
		2275	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		2276	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		2277	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		2278	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		2279	}
		2280	else
		2281	break;
		2282
		2283	if (ANHE_at (he) <= minat)
		2284	break;
		2285
		2286	heap [k] = *minpos;
		2287	ev_active (ANHE_w (*minpos)) = k;
		2288
		2289	k = minpos - heap;
		2290	}
		2291
		2292	heap [k] = he;
		2293	ev_active (ANHE_w (he)) = k;
		2294	}
		2295
		2296	#else /* 4HEAP */
		2297
		2298	#define HEAP0 1
		2299	#define HPARENT(k) ((k) >> 1)
		2300	#define UPHEAP_DONE(p,k) (!(p))
		2301
		2302	/* away from the root */
		2303	inline_speed void
		2304	downheap (ANHE *heap, int N, int k)
		2305	{
		2306	ANHE he = heap [k];
		2307
		2308	for (;;)
		2309	{
		2310	int c = k << 1;
		2311
		2312	if (c >= N + HEAP0)
		2313	break;
		2314
		2315	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		2316	? 1 : 0;
		2317
		2318	if (ANHE_at (he) <= ANHE_at (heap [c]))
		2319	break;
		2320
		2321	heap [k] = heap [c];
		2322	ev_active (ANHE_w (heap [k])) = k;
		2323
		2324	k = c;
		2325	}
		2326
		2327	heap [k] = he;
		2328	ev_active (ANHE_w (he)) = k;
		2329	}
		2330	#endif
		2331
		2332	/* towards the root */
		2333	inline_speed void
		2334	upheap (ANHE *heap, int k)
		2335	{
		2336	ANHE he = heap [k];
		2337
		2338	for (;;)
		2339	{
		2340	int p = HPARENT (k);
		2341
		2342	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		2343	break;
		2344
		2345	heap [k] = heap [p];
		2346	ev_active (ANHE_w (heap [k])) = k;
		2347	k = p;
		2348	}
		2349
		2350	heap [k] = he;
		2351	ev_active (ANHE_w (he)) = k;
		2352	}
		2353
		2354	/* move an element suitably so it is in a correct place */
		2355	inline_size void
		2356	adjustheap (ANHE *heap, int N, int k)
		2357	{
		2358	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
		2359	upheap (heap, k);
		2360	else
		2361	downheap (heap, N, k);
		2362	}
		2363
		2364	/* rebuild the heap: this function is used only once and executed rarely */
		2365	inline_size void
		2366	reheap (ANHE *heap, int N)
		2367	{
		2368	int i;
		2369
		2370	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		2371	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		2372	for (i = 0; i < N; ++i)
		2373	upheap (heap, i + HEAP0);
		2374	}
		2375
		2376	/*****************************************************************************/
		2377
		2378	/* associate signal watchers to a signal signal */
		2379	typedef struct
		2380	{
		2381	EV_ATOMIC_T pending;
		2382	#if EV_MULTIPLICITY
		2383	EV_P;
		2384	#endif
		2385	WL head;
		2386	} ANSIG;
		2387
		2388	static ANSIG signals [EV_NSIG - 1];
		2389
		2390	/*****************************************************************************/
		2391
		2392	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		2393
		2394	noinline ecb_cold
		2395	static void
803	evpipe_init (EV_P)	2396	evpipe_init (EV_P)
804	{	2397	{
805	if (!ev_is_active (&pipeev))	2398	if (!ev_is_active (&pipe_w))
806	{	2399	{
		2400	int fds [2];
		2401
		2402	# if EV_USE_EVENTFD
		2403	fds [0] = -1;
		2404	fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		2405	if (fds [1] < 0 && errno == EINVAL)
		2406	fds [1] = eventfd (0, 0);
		2407
		2408	if (fds [1] < 0)
		2409	# endif
		2410	{
807	while (pipe (evpipe))	2411	while (pipe (fds))
808	syserr ("(libev) error creating signal/async pipe");	2412	ev_syserr ("(libev) error creating signal/async pipe");
809		2413
810	fd_intern (evpipe [0]);	2414	fd_intern (fds [0]);
		2415	}
		2416
		2417	evpipe [0] = fds [0];
		2418
		2419	if (evpipe [1] < 0)
		2420	evpipe [1] = fds [1]; /* first call, set write fd */
		2421	else
		2422	{
		2423	/* on subsequent calls, do not change evpipe [1] */
		2424	/* so that evpipe_write can always rely on its value. */
		2425	/* this branch does not do anything sensible on windows, */
		2426	/* so must not be executed on windows */
		2427
		2428	dup2 (fds [1], evpipe [1]);
		2429	close (fds [1]);
		2430	}
		2431
811	fd_intern (evpipe [1]);	2432	fd_intern (evpipe [1]);
812		2433
813	ev_io_set (&pipeev, evpipe [0], EV_READ);	2434	ev_io_set (&pipe_w, evpipe [0] < 0 ? evpipe [1] : evpipe [0], EV_READ);
814	ev_io_start (EV_A_ &pipeev);	2435	ev_io_start (EV_A_ &pipe_w);
815	ev_unref (EV_A); /* watcher should not keep loop alive */	2436	ev_unref (EV_A); /* watcher should not keep loop alive */
816	}	2437	}
817	}	2438	}
818		2439
819	void inline_size	2440	inline_speed void
820	evpipe_write (EV_P_ EV_ATOMIC_T *flag)	2441	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821	{	2442	{
822	if (!*flag)	2443	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		2444
		2445	if (expect_true (*flag))
		2446	return;
		2447
		2448	*flag = 1;
		2449	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		2450
		2451	pipe_write_skipped = 1;
		2452
		2453	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		2454
		2455	if (pipe_write_wanted)
823	{	2456	{
		2457	int old_errno;
		2458
		2459	pipe_write_skipped = 0;
		2460	ECB_MEMORY_FENCE_RELEASE;
		2461
824	int old_errno = errno; /* save errno because write might clobber it */	2462	old_errno = errno; /* save errno because write will clobber it */
825		2463
826	*flag = 1;	2464	#if EV_USE_EVENTFD
827	write (evpipe [1], &old_errno, 1);	2465	if (evpipe [0] < 0)
		2466	{
		2467	uint64_t counter = 1;
		2468	write (evpipe [1], &counter, sizeof (uint64_t));
		2469	}
		2470	else
		2471	#endif
		2472	{
		2473	#ifdef _WIN32
		2474	WSABUF buf;
		2475	DWORD sent;
		2476	buf.buf = &buf;
		2477	buf.len = 1;
		2478	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
		2479	#else
		2480	write (evpipe [1], &(evpipe [1]), 1);
		2481	#endif
		2482	}
828		2483
829	errno = old_errno;	2484	errno = old_errno;
830	}	2485	}
831	}	2486	}
832		2487
		2488	/* called whenever the libev signal pipe */
		2489	/* got some events (signal, async) */
833	static void	2490	static void
834	pipecb (EV_P_ ev_io *iow, int revents)	2491	pipecb (EV_P_ ev_io *iow, int revents)
835	{	2492	{
		2493	int i;
		2494
		2495	if (revents & EV_READ)
836	{	2496	{
837	int dummy;	2497	#if EV_USE_EVENTFD
		2498	if (evpipe [0] < 0)
		2499	{
		2500	uint64_t counter;
		2501	read (evpipe [1], &counter, sizeof (uint64_t));
		2502	}
		2503	else
		2504	#endif
		2505	{
		2506	char dummy[4];
		2507	#ifdef _WIN32
		2508	WSABUF buf;
		2509	DWORD recvd;
		2510	DWORD flags = 0;
		2511	buf.buf = dummy;
		2512	buf.len = sizeof (dummy);
		2513	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		2514	#else
838	read (evpipe [0], &dummy, 1);	2515	read (evpipe [0], &dummy, sizeof (dummy));
		2516	#endif
		2517	}
839	}	2518	}
840		2519
841	if (gotsig && ev_is_default_loop (EV_A))	2520	pipe_write_skipped = 0;
842	{
843	int signum;
844	gotsig = 0;
845		2521
846	for (signum = signalmax; signum--; )	2522	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
847	if (signals [signum].gotsig)	2523
		2524	#if EV_SIGNAL_ENABLE
		2525	if (sig_pending)
		2526	{
		2527	sig_pending = 0;
		2528
		2529	ECB_MEMORY_FENCE;
		2530
		2531	for (i = EV_NSIG - 1; i--; )
		2532	if (expect_false (signals [i].pending))
848	ev_feed_signal_event (EV_A_ signum + 1);	2533	ev_feed_signal_event (EV_A_ i + 1);
849	}	2534	}
		2535	#endif
850		2536
851	#if EV_ASYNC_ENABLE	2537	#if EV_ASYNC_ENABLE
852	if (gotasync)	2538	if (async_pending)
853	{	2539	{
854	int i;	2540	async_pending = 0;
855	gotasync = 0;	2541
		2542	ECB_MEMORY_FENCE;
856		2543
857	for (i = asynccnt; i--; )	2544	for (i = asynccnt; i--; )
858	if (asyncs [i]->sent)	2545	if (asyncs [i]->sent)
859	{	2546	{
860	asyncs [i]->sent = 0;	2547	asyncs [i]->sent = 0;
		2548	ECB_MEMORY_FENCE_RELEASE;
861	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	2549	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862	}	2550	}
863	}	2551	}
864	#endif	2552	#endif
865	}	2553	}
866		2554
867	/*****************************************************************************/	2555	/*****************************************************************************/
868		2556
		2557	void
		2558	ev_feed_signal (int signum) EV_THROW
		2559	{
		2560	#if EV_MULTIPLICITY
		2561	EV_P;
		2562	ECB_MEMORY_FENCE_ACQUIRE;
		2563	EV_A = signals [signum - 1].loop;
		2564
		2565	if (!EV_A)
		2566	return;
		2567	#endif
		2568
		2569	signals [signum - 1].pending = 1;
		2570	evpipe_write (EV_A_ &sig_pending);
		2571	}
		2572
869	static void	2573	static void
870	sighandler (int signum)	2574	ev_sighandler (int signum)
871	{	2575	{
		2576	#ifdef _WIN32
		2577	signal (signum, ev_sighandler);
		2578	#endif
		2579
		2580	ev_feed_signal (signum);
		2581	}
		2582
		2583	noinline
		2584	void
		2585	ev_feed_signal_event (EV_P_ int signum) EV_THROW
		2586	{
		2587	WL w;
		2588
		2589	if (expect_false (signum <= 0 || signum >= EV_NSIG))
		2590	return;
		2591
		2592	--signum;
		2593
872	#if EV_MULTIPLICITY	2594	#if EV_MULTIPLICITY
873	struct ev_loop *loop = &default_loop_struct;	2595	/* it is permissible to try to feed a signal to the wrong loop */
874	#endif	2596	/* or, likely more useful, feeding a signal nobody is waiting for */
875		2597
876	#if _WIN32	2598	if (expect_false (signals [signum].loop != EV_A))
877	signal (signum, sighandler);
878	#endif
879
880	signals [signum - 1].gotsig = 1;
881	evpipe_write (EV_A_ &gotsig);
882	}
883
884	void noinline
885	ev_feed_signal_event (EV_P_ int signum)
886	{
887	WL w;
888
889	#if EV_MULTIPLICITY
890	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
891	#endif
892
893	--signum;
894
895	if (signum < 0 || signum >= signalmax)
896	return;	2599	return;
		2600	#endif
897		2601
898	signals [signum].gotsig = 0;	2602	signals [signum].pending = 0;
		2603	ECB_MEMORY_FENCE_RELEASE;
899		2604
900	for (w = signals [signum].head; w; w = w->next)	2605	for (w = signals [signum].head; w; w = w->next)
901	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2606	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
902	}	2607	}
903		2608
		2609	#if EV_USE_SIGNALFD
		2610	static void
		2611	sigfdcb (EV_P_ ev_io *iow, int revents)
		2612	{
		2613	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		2614
		2615	for (;;)
		2616	{
		2617	ssize_t res = read (sigfd, si, sizeof (si));
		2618
		2619	/* not ISO-C, as res might be -1, but works with SuS */
		2620	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		2621	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		2622
		2623	if (res < (ssize_t)sizeof (si))
		2624	break;
		2625	}
		2626	}
		2627	#endif
		2628
		2629	#endif
		2630
904	/*****************************************************************************/	2631	/*****************************************************************************/
905		2632
		2633	#if EV_CHILD_ENABLE
906	static WL childs [EV_PID_HASHSIZE];	2634	static WL childs [EV_PID_HASHSIZE];
907
908	#ifndef _WIN32
909		2635
910	static ev_signal childev;	2636	static ev_signal childev;
911		2637
912	#ifndef WIFCONTINUED	2638	#ifndef WIFCONTINUED
913	# define WIFCONTINUED(status) 0	2639	# define WIFCONTINUED(status) 0
914	#endif	2640	#endif
915		2641
916	void inline_speed	2642	/* handle a single child status event */
		2643	inline_speed void
917	child_reap (EV_P_ int chain, int pid, int status)	2644	child_reap (EV_P_ int chain, int pid, int status)
918	{	2645	{
919	ev_child *w;	2646	ev_child *w;
920	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	2647	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
921		2648
922	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	2649	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
923	{	2650	{
924	if ((w->pid == pid || !w->pid)	2651	if ((w->pid == pid || !w->pid)
925	&& (!traced || (w->flags & 1)))	2652	&& (!traced || (w->flags & 1)))
926	{	2653	{
927	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */	2654	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
…		…
934		2661
935	#ifndef WCONTINUED	2662	#ifndef WCONTINUED
936	# define WCONTINUED 0	2663	# define WCONTINUED 0
937	#endif	2664	#endif
938		2665
		2666	/* called on sigchld etc., calls waitpid */
939	static void	2667	static void
940	childcb (EV_P_ ev_signal *sw, int revents)	2668	childcb (EV_P_ ev_signal *sw, int revents)
941	{	2669	{
942	int pid, status;	2670	int pid, status;
943		2671
…		…
951	/* make sure we are called again until all children have been reaped */	2679	/* make sure we are called again until all children have been reaped */
952	/* we need to do it this way so that the callback gets called before we continue */	2680	/* we need to do it this way so that the callback gets called before we continue */
953	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	2681	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
954		2682
955	child_reap (EV_A_ pid, pid, status);	2683	child_reap (EV_A_ pid, pid, status);
956	if (EV_PID_HASHSIZE > 1)	2684	if ((EV_PID_HASHSIZE) > 1)
957	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	2685	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
958	}	2686	}
959		2687
960	#endif	2688	#endif
961		2689
962	/*****************************************************************************/	2690	/*****************************************************************************/
963		2691
		2692	#if EV_USE_IOCP
		2693	# include "ev_iocp.c"
		2694	#endif
964	#if EV_USE_PORT	2695	#if EV_USE_PORT
965	# include "ev_port.c"	2696	# include "ev_port.c"
966	#endif	2697	#endif
967	#if EV_USE_KQUEUE	2698	#if EV_USE_KQUEUE
968	# include "ev_kqueue.c"	2699	# include "ev_kqueue.c"
…		…
975	#endif	2706	#endif
976	#if EV_USE_SELECT	2707	#if EV_USE_SELECT
977	# include "ev_select.c"	2708	# include "ev_select.c"
978	#endif	2709	#endif
979		2710
980	int	2711	ecb_cold int
981	ev_version_major (void)	2712	ev_version_major (void) EV_THROW
982	{	2713	{
983	return EV_VERSION_MAJOR;	2714	return EV_VERSION_MAJOR;
984	}	2715	}
985		2716
986	int	2717	ecb_cold int
987	ev_version_minor (void)	2718	ev_version_minor (void) EV_THROW
988	{	2719	{
989	return EV_VERSION_MINOR;	2720	return EV_VERSION_MINOR;
990	}	2721	}
991		2722
992	/* return true if we are running with elevated privileges and should ignore env variables */	2723	/* return true if we are running with elevated privileges and should ignore env variables */
993	int inline_size	2724	inline_size ecb_cold int
994	enable_secure (void)	2725	enable_secure (void)
995	{	2726	{
996	#ifdef _WIN32	2727	#ifdef _WIN32
997	return 0;	2728	return 0;
998	#else	2729	#else
999	return getuid () != geteuid ()	2730	return getuid () != geteuid ()
1000	|| getgid () != getegid ();	2731	|| getgid () != getegid ();
1001	#endif	2732	#endif
1002	}	2733	}
1003		2734
		2735	ecb_cold
1004	unsigned int	2736	unsigned int
1005	ev_supported_backends (void)	2737	ev_supported_backends (void) EV_THROW
1006	{	2738	{
1007	unsigned int flags = 0;	2739	unsigned int flags = 0;
1008		2740
1009	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2741	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1010	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	2742	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
…		…
1013	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	2745	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1014		2746
1015	return flags;	2747	return flags;
1016	}	2748	}
1017		2749
		2750	ecb_cold
1018	unsigned int	2751	unsigned int
1019	ev_recommended_backends (void)	2752	ev_recommended_backends (void) EV_THROW
1020	{	2753	{
1021	unsigned int flags = ev_supported_backends ();	2754	unsigned int flags = ev_supported_backends ();
1022		2755
1023	#ifndef __NetBSD__	2756	#ifndef __NetBSD__
1024	/* kqueue is borked on everything but netbsd apparently */	2757	/* kqueue is borked on everything but netbsd apparently */
1025	/* it usually doesn't work correctly on anything but sockets and pipes */	2758	/* it usually doesn't work correctly on anything but sockets and pipes */
1026	flags &= ~EVBACKEND_KQUEUE;	2759	flags &= ~EVBACKEND_KQUEUE;
1027	#endif	2760	#endif
1028	#ifdef __APPLE__	2761	#ifdef __APPLE__
1029	// flags &= ~EVBACKEND_KQUEUE; for documentation	2762	/* only select works correctly on that "unix-certified" platform */
1030	flags &= ~EVBACKEND_POLL;	2763	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		2764	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		2765	#endif
		2766	#ifdef __FreeBSD__
		2767	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1031	#endif	2768	#endif
1032		2769
1033	return flags;	2770	return flags;
1034	}	2771	}
1035		2772
		2773	ecb_cold
1036	unsigned int	2774	unsigned int
1037	ev_embeddable_backends (void)	2775	ev_embeddable_backends (void) EV_THROW
1038	{	2776	{
1039	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2777	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1040		2778
1041	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	2779	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1042	/* please fix it and tell me how to detect the fix */	2780	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1043	flags &= ~EVBACKEND_EPOLL;	2781	flags &= ~EVBACKEND_EPOLL;
1044		2782
1045	return flags;	2783	return flags;
1046	}	2784	}
1047		2785
1048	unsigned int	2786	unsigned int
1049	ev_backend (EV_P)	2787	ev_backend (EV_P) EV_THROW
1050	{	2788	{
1051	return backend;	2789	return backend;
1052	}	2790	}
1053		2791
		2792	#if EV_FEATURE_API
1054	unsigned int	2793	unsigned int
1055	ev_loop_count (EV_P)	2794	ev_iteration (EV_P) EV_THROW
1056	{	2795	{
1057	return loop_count;	2796	return loop_count;
1058	}	2797	}
1059		2798
		2799	unsigned int
		2800	ev_depth (EV_P) EV_THROW
		2801	{
		2802	return loop_depth;
		2803	}
		2804
1060	void	2805	void
1061	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	2806	ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1062	{	2807	{
1063	io_blocktime = interval;	2808	io_blocktime = interval;
1064	}	2809	}
1065		2810
1066	void	2811	void
1067	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	2812	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1068	{	2813	{
1069	timeout_blocktime = interval;	2814	timeout_blocktime = interval;
1070	}	2815	}
1071		2816
1072	static void noinline	2817	void
		2818	ev_set_userdata (EV_P_ void *data) EV_THROW
		2819	{
		2820	userdata = data;
		2821	}
		2822
		2823	void *
		2824	ev_userdata (EV_P) EV_THROW
		2825	{
		2826	return userdata;
		2827	}
		2828
		2829	void
		2830	ev_set_invoke_pending_cb (EV_P_ ev_loop_callback invoke_pending_cb) EV_THROW
		2831	{
		2832	invoke_cb = invoke_pending_cb;
		2833	}
		2834
		2835	void
		2836	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
		2837	{
		2838	release_cb = release;
		2839	acquire_cb = acquire;
		2840	}
		2841	#endif
		2842
		2843	/* initialise a loop structure, must be zero-initialised */
		2844	noinline ecb_cold
		2845	static void
1073	loop_init (EV_P_ unsigned int flags)	2846	loop_init (EV_P_ unsigned int flags) EV_THROW
1074	{	2847	{
1075	if (!backend)	2848	if (!backend)
1076	{	2849	{
		2850	origflags = flags;
		2851
		2852	#if EV_USE_REALTIME
		2853	if (!have_realtime)
		2854	{
		2855	struct timespec ts;
		2856
		2857	if (!clock_gettime (CLOCK_REALTIME, &ts))
		2858	have_realtime = 1;
		2859	}
		2860	#endif
		2861
1077	#if EV_USE_MONOTONIC	2862	#if EV_USE_MONOTONIC
		2863	if (!have_monotonic)
1078	{	2864	{
1079	struct timespec ts;	2865	struct timespec ts;
		2866
1080	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	2867	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1081	have_monotonic = 1;	2868	have_monotonic = 1;
1082	}	2869	}
1083	#endif
1084
1085	ev_rt_now = ev_time ();
1086	mn_now = get_clock ();
1087	now_floor = mn_now;
1088	rtmn_diff = ev_rt_now - mn_now;
1089
1090	io_blocktime = 0.;
1091	timeout_blocktime = 0.;
1092	backend = 0;
1093	backend_fd = -1;
1094	gotasync = 0;
1095	#if EV_USE_INOTIFY
1096	fs_fd = -2;
1097	#endif	2870	#endif
1098		2871
1099	/* pid check not overridable via env */	2872	/* pid check not overridable via env */
1100	#ifndef _WIN32	2873	#ifndef _WIN32
1101	if (flags & EVFLAG_FORKCHECK)	2874	if (flags & EVFLAG_FORKCHECK)
…		…
1105	if (!(flags & EVFLAG_NOENV)	2878	if (!(flags & EVFLAG_NOENV)
1106	&& !enable_secure ()	2879	&& !enable_secure ()
1107	&& getenv ("LIBEV_FLAGS"))	2880	&& getenv ("LIBEV_FLAGS"))
1108	flags = atoi (getenv ("LIBEV_FLAGS"));	2881	flags = atoi (getenv ("LIBEV_FLAGS"));
1109		2882
1110	if (!(flags & 0x0000ffffUL))	2883	ev_rt_now = ev_time ();
		2884	mn_now = get_clock ();
		2885	now_floor = mn_now;
		2886	rtmn_diff = ev_rt_now - mn_now;
		2887	#if EV_FEATURE_API
		2888	invoke_cb = ev_invoke_pending;
		2889	#endif
		2890
		2891	io_blocktime = 0.;
		2892	timeout_blocktime = 0.;
		2893	backend = 0;
		2894	backend_fd = -1;
		2895	sig_pending = 0;
		2896	#if EV_ASYNC_ENABLE
		2897	async_pending = 0;
		2898	#endif
		2899	pipe_write_skipped = 0;
		2900	pipe_write_wanted = 0;
		2901	evpipe [0] = -1;
		2902	evpipe [1] = -1;
		2903	#if EV_USE_INOTIFY
		2904	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		2905	#endif
		2906	#if EV_USE_SIGNALFD
		2907	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		2908	#endif
		2909
		2910	if (!(flags & EVBACKEND_MASK))
1111	flags |= ev_recommended_backends ();	2911	flags |= ev_recommended_backends ();
1112		2912
		2913	#if EV_USE_IOCP
		2914	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		2915	#endif
1113	#if EV_USE_PORT	2916	#if EV_USE_PORT
1114	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	2917	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1115	#endif	2918	#endif
1116	#if EV_USE_KQUEUE	2919	#if EV_USE_KQUEUE
1117	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	2920	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1124	#endif	2927	#endif
1125	#if EV_USE_SELECT	2928	#if EV_USE_SELECT
1126	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	2929	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1127	#endif	2930	#endif
1128		2931
		2932	ev_prepare_init (&pending_w, pendingcb);
		2933
		2934	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1129	ev_init (&pipeev, pipecb);	2935	ev_init (&pipe_w, pipecb);
1130	ev_set_priority (&pipeev, EV_MAXPRI);	2936	ev_set_priority (&pipe_w, EV_MAXPRI);
		2937	#endif
1131	}	2938	}
1132	}	2939	}
1133		2940
1134	static void noinline	2941	/* free up a loop structure */
		2942	ecb_cold
		2943	void
1135	loop_destroy (EV_P)	2944	ev_loop_destroy (EV_P)
1136	{	2945	{
1137	int i;	2946	int i;
1138		2947
		2948	#if EV_MULTIPLICITY
		2949	/* mimic free (0) */
		2950	if (!EV_A)
		2951	return;
		2952	#endif
		2953
		2954	#if EV_CLEANUP_ENABLE
		2955	/* queue cleanup watchers (and execute them) */
		2956	if (expect_false (cleanupcnt))
		2957	{
		2958	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		2959	EV_INVOKE_PENDING;
		2960	}
		2961	#endif
		2962
		2963	#if EV_CHILD_ENABLE
		2964	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
		2965	{
		2966	ev_ref (EV_A); /* child watcher */
		2967	ev_signal_stop (EV_A_ &childev);
		2968	}
		2969	#endif
		2970
1139	if (ev_is_active (&pipeev))	2971	if (ev_is_active (&pipe_w))
1140	{	2972	{
1141	ev_ref (EV_A); /* signal watcher */	2973	/*ev_ref (EV_A);*/
1142	ev_io_stop (EV_A_ &pipeev);	2974	/*ev_io_stop (EV_A_ &pipe_w);*/
1143		2975
1144	close (evpipe [0]); evpipe [0] = 0;	2976	if (evpipe [0] >= 0) EV_WIN32_CLOSE_FD (evpipe [0]);
1145	close (evpipe [1]); evpipe [1] = 0;	2977	if (evpipe [1] >= 0) EV_WIN32_CLOSE_FD (evpipe [1]);
1146	}	2978	}
		2979
		2980	#if EV_USE_SIGNALFD
		2981	if (ev_is_active (&sigfd_w))
		2982	close (sigfd);
		2983	#endif
1147		2984
1148	#if EV_USE_INOTIFY	2985	#if EV_USE_INOTIFY
1149	if (fs_fd >= 0)	2986	if (fs_fd >= 0)
1150	close (fs_fd);	2987	close (fs_fd);
1151	#endif	2988	#endif
1152		2989
1153	if (backend_fd >= 0)	2990	if (backend_fd >= 0)
1154	close (backend_fd);	2991	close (backend_fd);
1155		2992
		2993	#if EV_USE_IOCP
		2994	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		2995	#endif
1156	#if EV_USE_PORT	2996	#if EV_USE_PORT
1157	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	2997	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1158	#endif	2998	#endif
1159	#if EV_USE_KQUEUE	2999	#if EV_USE_KQUEUE
1160	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	3000	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1175	#if EV_IDLE_ENABLE	3015	#if EV_IDLE_ENABLE
1176	array_free (idle, [i]);	3016	array_free (idle, [i]);
1177	#endif	3017	#endif
1178	}	3018	}
1179		3019
1180	ev_free (anfds); anfdmax = 0;	3020	ev_free (anfds); anfds = 0; anfdmax = 0;
1181		3021
1182	/* have to use the microsoft-never-gets-it-right macro */	3022	/* have to use the microsoft-never-gets-it-right macro */
		3023	array_free (rfeed, EMPTY);
1183	array_free (fdchange, EMPTY);	3024	array_free (fdchange, EMPTY);
1184	array_free (timer, EMPTY);	3025	array_free (timer, EMPTY);
1185	#if EV_PERIODIC_ENABLE	3026	#if EV_PERIODIC_ENABLE
1186	array_free (periodic, EMPTY);	3027	array_free (periodic, EMPTY);
1187	#endif	3028	#endif
1188	#if EV_FORK_ENABLE	3029	#if EV_FORK_ENABLE
1189	array_free (fork, EMPTY);	3030	array_free (fork, EMPTY);
1190	#endif	3031	#endif
		3032	#if EV_CLEANUP_ENABLE
		3033	array_free (cleanup, EMPTY);
		3034	#endif
1191	array_free (prepare, EMPTY);	3035	array_free (prepare, EMPTY);
1192	array_free (check, EMPTY);	3036	array_free (check, EMPTY);
1193	#if EV_ASYNC_ENABLE	3037	#if EV_ASYNC_ENABLE
1194	array_free (async, EMPTY);	3038	array_free (async, EMPTY);
1195	#endif	3039	#endif
1196		3040
1197	backend = 0;	3041	backend = 0;
1198	}
1199		3042
		3043	#if EV_MULTIPLICITY
		3044	if (ev_is_default_loop (EV_A))
		3045	#endif
		3046	ev_default_loop_ptr = 0;
		3047	#if EV_MULTIPLICITY
		3048	else
		3049	ev_free (EV_A);
		3050	#endif
		3051	}
		3052
		3053	#if EV_USE_INOTIFY
1200	void inline_size infy_fork (EV_P);	3054	inline_size void infy_fork (EV_P);
		3055	#endif
1201		3056
1202	void inline_size	3057	inline_size void
1203	loop_fork (EV_P)	3058	loop_fork (EV_P)
1204	{	3059	{
1205	#if EV_USE_PORT	3060	#if EV_USE_PORT
1206	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	3061	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1207	#endif	3062	#endif
…		…
1213	#endif	3068	#endif
1214	#if EV_USE_INOTIFY	3069	#if EV_USE_INOTIFY
1215	infy_fork (EV_A);	3070	infy_fork (EV_A);
1216	#endif	3071	#endif
1217		3072
1218	if (ev_is_active (&pipeev))	3073	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		3074	if (ev_is_active (&pipe_w) && postfork != 2)
		3075	{
		3076	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
		3077
		3078	ev_ref (EV_A);
		3079	ev_io_stop (EV_A_ &pipe_w);
		3080
		3081	if (evpipe [0] >= 0)
		3082	EV_WIN32_CLOSE_FD (evpipe [0]);
		3083
		3084	evpipe_init (EV_A);
		3085	/* iterate over everything, in case we missed something before */
		3086	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
1219	{	3087	}
1220	/* this "locks" the handlers against writing to the pipe */	3088	#endif
1221	/* while we modify the fd vars */	3089
1222	gotsig = 1;	3090	postfork = 0;
		3091	}
		3092
		3093	#if EV_MULTIPLICITY
		3094
		3095	ecb_cold
		3096	struct ev_loop *
		3097	ev_loop_new (unsigned int flags) EV_THROW
		3098	{
		3099	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		3100
		3101	memset (EV_A, 0, sizeof (struct ev_loop));
		3102	loop_init (EV_A_ flags);
		3103
		3104	if (ev_backend (EV_A))
		3105	return EV_A;
		3106
		3107	ev_free (EV_A);
		3108	return 0;
		3109	}
		3110
		3111	#endif /* multiplicity */
		3112
		3113	#if EV_VERIFY
		3114	noinline ecb_cold
		3115	static void
		3116	verify_watcher (EV_P_ W w)
		3117	{
		3118	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		3119
		3120	if (w->pending)
		3121	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		3122	}
		3123
		3124	noinline ecb_cold
		3125	static void
		3126	verify_heap (EV_P_ ANHE *heap, int N)
		3127	{
		3128	int i;
		3129
		3130	for (i = HEAP0; i < N + HEAP0; ++i)
		3131	{
		3132	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		3133	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		3134	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		3135
		3136	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		3137	}
		3138	}
		3139
		3140	noinline ecb_cold
		3141	static void
		3142	array_verify (EV_P_ W *ws, int cnt)
		3143	{
		3144	while (cnt--)
		3145	{
		3146	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		3147	verify_watcher (EV_A_ ws [cnt]);
		3148	}
		3149	}
		3150	#endif
		3151
		3152	#if EV_FEATURE_API
		3153	void ecb_cold
		3154	ev_verify (EV_P) EV_THROW
		3155	{
		3156	#if EV_VERIFY
		3157	int i;
		3158	WL w, w2;
		3159
		3160	assert (activecnt >= -1);
		3161
		3162	assert (fdchangemax >= fdchangecnt);
		3163	for (i = 0; i < fdchangecnt; ++i)
		3164	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		3165
		3166	assert (anfdmax >= 0);
		3167	for (i = 0; i < anfdmax; ++i)
		3168	{
		3169	int j = 0;
		3170
		3171	for (w = w2 = anfds [i].head; w; w = w->next)
		3172	{
		3173	verify_watcher (EV_A_ (W)w);
		3174
		3175	if (j++ & 1)
		3176	{
		3177	assert (("libev: io watcher list contains a loop", w != w2));
		3178	w2 = w2->next;
		3179	}
		3180
		3181	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		3182	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		3183	}
		3184	}
		3185
		3186	assert (timermax >= timercnt);
		3187	verify_heap (EV_A_ timers, timercnt);
		3188
		3189	#if EV_PERIODIC_ENABLE
		3190	assert (periodicmax >= periodiccnt);
		3191	verify_heap (EV_A_ periodics, periodiccnt);
		3192	#endif
		3193
		3194	for (i = NUMPRI; i--; )
		3195	{
		3196	assert (pendingmax [i] >= pendingcnt [i]);
		3197	#if EV_IDLE_ENABLE
		3198	assert (idleall >= 0);
		3199	assert (idlemax [i] >= idlecnt [i]);
		3200	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		3201	#endif
		3202	}
		3203
		3204	#if EV_FORK_ENABLE
		3205	assert (forkmax >= forkcnt);
		3206	array_verify (EV_A_ (W *)forks, forkcnt);
		3207	#endif
		3208
		3209	#if EV_CLEANUP_ENABLE
		3210	assert (cleanupmax >= cleanupcnt);
		3211	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		3212	#endif
		3213
1223	#if EV_ASYNC_ENABLE	3214	#if EV_ASYNC_ENABLE
1224	gotasync = 1;	3215	assert (asyncmax >= asynccnt);
		3216	array_verify (EV_A_ (W *)asyncs, asynccnt);
		3217	#endif
		3218
		3219	#if EV_PREPARE_ENABLE
		3220	assert (preparemax >= preparecnt);
		3221	array_verify (EV_A_ (W *)prepares, preparecnt);
		3222	#endif
		3223
		3224	#if EV_CHECK_ENABLE
		3225	assert (checkmax >= checkcnt);
		3226	array_verify (EV_A_ (W *)checks, checkcnt);
		3227	#endif
		3228
		3229	# if 0
		3230	#if EV_CHILD_ENABLE
		3231	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		3232	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		3233	#endif
1225	#endif	3234	# endif
1226		3235	#endif
1227	ev_ref (EV_A);
1228	ev_io_stop (EV_A_ &pipeev);
1229	close (evpipe [0]);
1230	close (evpipe [1]);
1231
1232	evpipe_init (EV_A);
1233	/* now iterate over everything, in case we missed something */
1234	pipecb (EV_A_ &pipeev, EV_READ);
1235	}
1236
1237	postfork = 0;
1238	}	3236	}
		3237	#endif
1239		3238
1240	#if EV_MULTIPLICITY	3239	#if EV_MULTIPLICITY
		3240	ecb_cold
1241	struct ev_loop *	3241	struct ev_loop *
1242	ev_loop_new (unsigned int flags)	3242	#else
1243	{	3243	int
1244	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1245
1246	memset (loop, 0, sizeof (struct ev_loop));
1247
1248	loop_init (EV_A_ flags);
1249
1250	if (ev_backend (EV_A))
1251	return loop;
1252
1253	return 0;
1254	}
1255
1256	void
1257	ev_loop_destroy (EV_P)
1258	{
1259	loop_destroy (EV_A);
1260	ev_free (loop);
1261	}
1262
1263	void
1264	ev_loop_fork (EV_P)
1265	{
1266	postfork = 1; /* must be in line with ev_default_fork */
1267	}
1268
1269	#endif	3244	#endif
1270		3245	ev_default_loop (unsigned int flags) EV_THROW
		3246	{
		3247	if (!ev_default_loop_ptr)
		3248	{
1271	#if EV_MULTIPLICITY	3249	#if EV_MULTIPLICITY
1272	struct ev_loop *
1273	ev_default_loop_init (unsigned int flags)
1274	#else
1275	int
1276	ev_default_loop (unsigned int flags)
1277	#endif
1278	{
1279	if (!ev_default_loop_ptr)
1280	{
1281	#if EV_MULTIPLICITY
1282	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	3250	EV_P = ev_default_loop_ptr = &default_loop_struct;
1283	#else	3251	#else
1284	ev_default_loop_ptr = 1;	3252	ev_default_loop_ptr = 1;
1285	#endif	3253	#endif
1286		3254
1287	loop_init (EV_A_ flags);	3255	loop_init (EV_A_ flags);
1288		3256
1289	if (ev_backend (EV_A))	3257	if (ev_backend (EV_A))
1290	{	3258	{
1291	#ifndef _WIN32	3259	#if EV_CHILD_ENABLE
1292	ev_signal_init (&childev, childcb, SIGCHLD);	3260	ev_signal_init (&childev, childcb, SIGCHLD);
1293	ev_set_priority (&childev, EV_MAXPRI);	3261	ev_set_priority (&childev, EV_MAXPRI);
1294	ev_signal_start (EV_A_ &childev);	3262	ev_signal_start (EV_A_ &childev);
1295	ev_unref (EV_A); /* child watcher should not keep loop alive */	3263	ev_unref (EV_A); /* child watcher should not keep loop alive */
1296	#endif	3264	#endif
…		…
1301		3269
1302	return ev_default_loop_ptr;	3270	return ev_default_loop_ptr;
1303	}	3271	}
1304		3272
1305	void	3273	void
1306	ev_default_destroy (void)	3274	ev_loop_fork (EV_P) EV_THROW
1307	{	3275	{
1308	#if EV_MULTIPLICITY	3276	postfork = 1;
1309	struct ev_loop *loop = ev_default_loop_ptr;
1310	#endif
1311
1312	#ifndef _WIN32
1313	ev_ref (EV_A); /* child watcher */
1314	ev_signal_stop (EV_A_ &childev);
1315	#endif
1316
1317	loop_destroy (EV_A);
1318	}
1319
1320	void
1321	ev_default_fork (void)
1322	{
1323	#if EV_MULTIPLICITY
1324	struct ev_loop *loop = ev_default_loop_ptr;
1325	#endif
1326
1327	if (backend)
1328	postfork = 1; /* must be in line with ev_loop_fork */
1329	}	3277	}
1330		3278
1331	/*****************************************************************************/	3279	/*****************************************************************************/
1332		3280
1333	void	3281	void
1334	ev_invoke (EV_P_ void *w, int revents)	3282	ev_invoke (EV_P_ void *w, int revents)
1335	{	3283	{
1336	EV_CB_INVOKE ((W)w, revents);	3284	EV_CB_INVOKE ((W)w, revents);
1337	}	3285	}
1338		3286
1339	void inline_speed	3287	unsigned int
1340	call_pending (EV_P)	3288	ev_pending_count (EV_P) EV_THROW
1341	{	3289	{
1342	int pri;	3290	int pri;
		3291	unsigned int count = 0;
1343		3292
1344	for (pri = NUMPRI; pri--; )	3293	for (pri = NUMPRI; pri--; )
		3294	count += pendingcnt [pri];
		3295
		3296	return count;
		3297	}
		3298
		3299	noinline
		3300	void
		3301	ev_invoke_pending (EV_P)
		3302	{
		3303	pendingpri = NUMPRI;
		3304
		3305	while (pendingpri) /* pendingpri possibly gets modified in the inner loop */
		3306	{
		3307	--pendingpri;
		3308
1345	while (pendingcnt [pri])	3309	while (pendingcnt [pendingpri])
1346	{
1347	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1348
1349	if (expect_true (p->w))
1350	{
1351	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1352
1353	p->w->pending = 0;
1354	EV_CB_INVOKE (p->w, p->events);
1355	}
1356	}
1357	}
1358
1359	void inline_size
1360	timers_reify (EV_P)
1361	{
1362	while (timercnt && ((WT)timers [0])->at <= mn_now)
1363	{
1364	ev_timer *w = (ev_timer *)timers [0];
1365
1366	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1367
1368	/* first reschedule or stop timer */
1369	if (w->repeat)
1370	{	3310	{
1371	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	3311	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1372		3312
1373	((WT)w)->at += w->repeat;	3313	p->w->pending = 0;
1374	if (((WT)w)->at < mn_now)	3314	EV_CB_INVOKE (p->w, p->events);
1375	((WT)w)->at = mn_now;	3315	EV_FREQUENT_CHECK;
1376
1377	downheap (timers, timercnt, 0);
1378	}	3316	}
1379	else
1380	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1381
1382	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1383	}
1384	}
1385
1386	#if EV_PERIODIC_ENABLE
1387	void inline_size
1388	periodics_reify (EV_P)
1389	{
1390	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1391	{	3317	}
1392	ev_periodic *w = (ev_periodic *)periodics [0];
1393
1394	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1395
1396	/* first reschedule or stop timer */
1397	if (w->reschedule_cb)
1398	{
1399	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1400	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1401	downheap (periodics, periodiccnt, 0);
1402	}
1403	else if (w->interval)
1404	{
1405	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1406	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1407	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1408	downheap (periodics, periodiccnt, 0);
1409	}
1410	else
1411	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1412
1413	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1414	}
1415	}	3318	}
1416
1417	static void noinline
1418	periodics_reschedule (EV_P)
1419	{
1420	int i;
1421
1422	/* adjust periodics after time jump */
1423	for (i = 0; i < periodiccnt; ++i)
1424	{
1425	ev_periodic *w = (ev_periodic *)periodics [i];
1426
1427	if (w->reschedule_cb)
1428	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1429	else if (w->interval)
1430	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1431	}
1432
1433	/* now rebuild the heap */
1434	for (i = periodiccnt >> 1; i--; )
1435	downheap (periodics, periodiccnt, i);
1436	}
1437	#endif
1438		3319
1439	#if EV_IDLE_ENABLE	3320	#if EV_IDLE_ENABLE
1440	void inline_size	3321	/* make idle watchers pending. this handles the "call-idle */
		3322	/* only when higher priorities are idle" logic */
		3323	inline_size void
1441	idle_reify (EV_P)	3324	idle_reify (EV_P)
1442	{	3325	{
1443	if (expect_false (idleall))	3326	if (expect_false (idleall))
1444	{	3327	{
1445	int pri;	3328	int pri;
…		…
1457	}	3340	}
1458	}	3341	}
1459	}	3342	}
1460	#endif	3343	#endif
1461		3344
1462	void inline_speed	3345	/* make timers pending */
		3346	inline_size void
		3347	timers_reify (EV_P)
		3348	{
		3349	EV_FREQUENT_CHECK;
		3350
		3351	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		3352	{
		3353	do
		3354	{
		3355	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		3356
		3357	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		3358
		3359	/* first reschedule or stop timer */
		3360	if (w->repeat)
		3361	{
		3362	ev_at (w) += w->repeat;
		3363	if (ev_at (w) < mn_now)
		3364	ev_at (w) = mn_now;
		3365
		3366	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		3367
		3368	ANHE_at_cache (timers [HEAP0]);
		3369	downheap (timers, timercnt, HEAP0);
		3370	}
		3371	else
		3372	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		3373
		3374	EV_FREQUENT_CHECK;
		3375	feed_reverse (EV_A_ (W)w);
		3376	}
		3377	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		3378
		3379	feed_reverse_done (EV_A_ EV_TIMER);
		3380	}
		3381	}
		3382
		3383	#if EV_PERIODIC_ENABLE
		3384
		3385	noinline
		3386	static void
		3387	periodic_recalc (EV_P_ ev_periodic *w)
		3388	{
		3389	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		3390	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		3391
		3392	/* the above almost always errs on the low side */
		3393	while (at <= ev_rt_now)
		3394	{
		3395	ev_tstamp nat = at + w->interval;
		3396
		3397	/* when resolution fails us, we use ev_rt_now */
		3398	if (expect_false (nat == at))
		3399	{
		3400	at = ev_rt_now;
		3401	break;
		3402	}
		3403
		3404	at = nat;
		3405	}
		3406
		3407	ev_at (w) = at;
		3408	}
		3409
		3410	/* make periodics pending */
		3411	inline_size void
		3412	periodics_reify (EV_P)
		3413	{
		3414	EV_FREQUENT_CHECK;
		3415
		3416	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		3417	{
		3418	do
		3419	{
		3420	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		3421
		3422	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		3423
		3424	/* first reschedule or stop timer */
		3425	if (w->reschedule_cb)
		3426	{
		3427	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		3428
		3429	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		3430
		3431	ANHE_at_cache (periodics [HEAP0]);
		3432	downheap (periodics, periodiccnt, HEAP0);
		3433	}
		3434	else if (w->interval)
		3435	{
		3436	periodic_recalc (EV_A_ w);
		3437	ANHE_at_cache (periodics [HEAP0]);
		3438	downheap (periodics, periodiccnt, HEAP0);
		3439	}
		3440	else
		3441	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		3442
		3443	EV_FREQUENT_CHECK;
		3444	feed_reverse (EV_A_ (W)w);
		3445	}
		3446	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		3447
		3448	feed_reverse_done (EV_A_ EV_PERIODIC);
		3449	}
		3450	}
		3451
		3452	/* simply recalculate all periodics */
		3453	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		3454	noinline ecb_cold
		3455	static void
		3456	periodics_reschedule (EV_P)
		3457	{
		3458	int i;
		3459
		3460	/* adjust periodics after time jump */
		3461	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		3462	{
		3463	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		3464
		3465	if (w->reschedule_cb)
		3466	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		3467	else if (w->interval)
		3468	periodic_recalc (EV_A_ w);
		3469
		3470	ANHE_at_cache (periodics [i]);
		3471	}
		3472
		3473	reheap (periodics, periodiccnt);
		3474	}
		3475	#endif
		3476
		3477	/* adjust all timers by a given offset */
		3478	noinline ecb_cold
		3479	static void
		3480	timers_reschedule (EV_P_ ev_tstamp adjust)
		3481	{
		3482	int i;
		3483
		3484	for (i = 0; i < timercnt; ++i)
		3485	{
		3486	ANHE *he = timers + i + HEAP0;
		3487	ANHE_w (*he)->at += adjust;
		3488	ANHE_at_cache (*he);
		3489	}
		3490	}
		3491
		3492	/* fetch new monotonic and realtime times from the kernel */
		3493	/* also detect if there was a timejump, and act accordingly */
		3494	inline_speed void
1463	time_update (EV_P_ ev_tstamp max_block)	3495	time_update (EV_P_ ev_tstamp max_block)
1464	{	3496	{
1465	int i;
1466
1467	#if EV_USE_MONOTONIC	3497	#if EV_USE_MONOTONIC
1468	if (expect_true (have_monotonic))	3498	if (expect_true (have_monotonic))
1469	{	3499	{
		3500	int i;
1470	ev_tstamp odiff = rtmn_diff;	3501	ev_tstamp odiff = rtmn_diff;
1471		3502
1472	mn_now = get_clock ();	3503	mn_now = get_clock ();
1473		3504
1474	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	3505	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1490	* doesn't hurt either as we only do this on time-jumps or	3521	* doesn't hurt either as we only do this on time-jumps or
1491	* in the unlikely event of having been preempted here.	3522	* in the unlikely event of having been preempted here.
1492	*/	3523	*/
1493	for (i = 4; --i; )	3524	for (i = 4; --i; )
1494	{	3525	{
		3526	ev_tstamp diff;
1495	rtmn_diff = ev_rt_now - mn_now;	3527	rtmn_diff = ev_rt_now - mn_now;
1496		3528
1497	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	3529	diff = odiff - rtmn_diff;
		3530
		3531	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1498	return; /* all is well */	3532	return; /* all is well */
1499		3533
1500	ev_rt_now = ev_time ();	3534	ev_rt_now = ev_time ();
1501	mn_now = get_clock ();	3535	mn_now = get_clock ();
1502	now_floor = mn_now;	3536	now_floor = mn_now;
1503	}	3537	}
1504		3538
		3539	/* no timer adjustment, as the monotonic clock doesn't jump */
		3540	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1505	# if EV_PERIODIC_ENABLE	3541	# if EV_PERIODIC_ENABLE
1506	periodics_reschedule (EV_A);	3542	periodics_reschedule (EV_A);
1507	# endif	3543	# endif
1508	/* no timer adjustment, as the monotonic clock doesn't jump */
1509	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1510	}	3544	}
1511	else	3545	else
1512	#endif	3546	#endif
1513	{	3547	{
1514	ev_rt_now = ev_time ();	3548	ev_rt_now = ev_time ();
1515		3549
1516	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	3550	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1517	{	3551	{
		3552	/* adjust timers. this is easy, as the offset is the same for all of them */
		3553	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1518	#if EV_PERIODIC_ENABLE	3554	#if EV_PERIODIC_ENABLE
1519	periodics_reschedule (EV_A);	3555	periodics_reschedule (EV_A);
1520	#endif	3556	#endif
1521	/* adjust timers. this is easy, as the offset is the same for all of them */
1522	for (i = 0; i < timercnt; ++i)
1523	((WT)timers [i])->at += ev_rt_now - mn_now;
1524	}	3557	}
1525		3558
1526	mn_now = ev_rt_now;	3559	mn_now = ev_rt_now;
1527	}	3560	}
1528	}	3561	}
1529		3562
1530	void	3563	int
1531	ev_ref (EV_P)
1532	{
1533	++activecnt;
1534	}
1535
1536	void
1537	ev_unref (EV_P)
1538	{
1539	--activecnt;
1540	}
1541
1542	static int loop_done;
1543
1544	void
1545	ev_loop (EV_P_ int flags)	3564	ev_run (EV_P_ int flags)
1546	{	3565	{
1547	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	3566	#if EV_FEATURE_API
1548	? EVUNLOOP_ONE	3567	++loop_depth;
1549	: EVUNLOOP_CANCEL;	3568	#endif
1550		3569
		3570	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		3571
		3572	loop_done = EVBREAK_CANCEL;
		3573
1551	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	3574	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1552		3575
1553	do	3576	do
1554	{	3577	{
		3578	#if EV_VERIFY >= 2
		3579	ev_verify (EV_A);
		3580	#endif
		3581
1555	#ifndef _WIN32	3582	#ifndef _WIN32
1556	if (expect_false (curpid)) /* penalise the forking check even more */	3583	if (expect_false (curpid)) /* penalise the forking check even more */
1557	if (expect_false (getpid () != curpid))	3584	if (expect_false (getpid () != curpid))
1558	{	3585	{
1559	curpid = getpid ();	3586	curpid = getpid ();
…		…
1565	/* we might have forked, so queue fork handlers */	3592	/* we might have forked, so queue fork handlers */
1566	if (expect_false (postfork))	3593	if (expect_false (postfork))
1567	if (forkcnt)	3594	if (forkcnt)
1568	{	3595	{
1569	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	3596	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1570	call_pending (EV_A);	3597	EV_INVOKE_PENDING;
1571	}	3598	}
1572	#endif	3599	#endif
1573		3600
		3601	#if EV_PREPARE_ENABLE
1574	/* queue prepare watchers (and execute them) */	3602	/* queue prepare watchers (and execute them) */
1575	if (expect_false (preparecnt))	3603	if (expect_false (preparecnt))
1576	{	3604	{
1577	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	3605	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1578	call_pending (EV_A);	3606	EV_INVOKE_PENDING;
1579	}	3607	}
		3608	#endif
1580		3609
1581	if (expect_false (!activecnt))	3610	if (expect_false (loop_done))
1582	break;	3611	break;
1583		3612
1584	/* we might have forked, so reify kernel state if necessary */	3613	/* we might have forked, so reify kernel state if necessary */
1585	if (expect_false (postfork))	3614	if (expect_false (postfork))
1586	loop_fork (EV_A);	3615	loop_fork (EV_A);
…		…
1591	/* calculate blocking time */	3620	/* calculate blocking time */
1592	{	3621	{
1593	ev_tstamp waittime = 0.;	3622	ev_tstamp waittime = 0.;
1594	ev_tstamp sleeptime = 0.;	3623	ev_tstamp sleeptime = 0.;
1595		3624
		3625	/* remember old timestamp for io_blocktime calculation */
		3626	ev_tstamp prev_mn_now = mn_now;
		3627
		3628	/* update time to cancel out callback processing overhead */
		3629	time_update (EV_A_ 1e100);
		3630
		3631	/* from now on, we want a pipe-wake-up */
		3632	pipe_write_wanted = 1;
		3633
		3634	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		3635
1596	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	3636	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1597	{	3637	{
1598	/* update time to cancel out callback processing overhead */
1599	time_update (EV_A_ 1e100);
1600
1601	waittime = MAX_BLOCKTIME;	3638	waittime = MAX_BLOCKTIME;
1602		3639
1603	if (timercnt)	3640	if (timercnt)
1604	{	3641	{
1605	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	3642	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1606	if (waittime > to) waittime = to;	3643	if (waittime > to) waittime = to;
1607	}	3644	}
1608		3645
1609	#if EV_PERIODIC_ENABLE	3646	#if EV_PERIODIC_ENABLE
1610	if (periodiccnt)	3647	if (periodiccnt)
1611	{	3648	{
1612	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	3649	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1613	if (waittime > to) waittime = to;	3650	if (waittime > to) waittime = to;
1614	}	3651	}
1615	#endif	3652	#endif
1616		3653
		3654	/* don't let timeouts decrease the waittime below timeout_blocktime */
1617	if (expect_false (waittime < timeout_blocktime))	3655	if (expect_false (waittime < timeout_blocktime))
1618	waittime = timeout_blocktime;	3656	waittime = timeout_blocktime;
1619		3657
1620	sleeptime = waittime - backend_fudge;	3658	/* at this point, we NEED to wait, so we have to ensure */
		3659	/* to pass a minimum nonzero value to the backend */
		3660	if (expect_false (waittime < backend_mintime))
		3661	waittime = backend_mintime;
1621		3662
		3663	/* extra check because io_blocktime is commonly 0 */
1622	if (expect_true (sleeptime > io_blocktime))	3664	if (expect_false (io_blocktime))
1623	sleeptime = io_blocktime;
1624
1625	if (sleeptime)
1626	{	3665	{
		3666	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		3667
		3668	if (sleeptime > waittime - backend_mintime)
		3669	sleeptime = waittime - backend_mintime;
		3670
		3671	if (expect_true (sleeptime > 0.))
		3672	{
1627	ev_sleep (sleeptime);	3673	ev_sleep (sleeptime);
1628	waittime -= sleeptime;	3674	waittime -= sleeptime;
		3675	}
1629	}	3676	}
1630	}	3677	}
1631		3678
		3679	#if EV_FEATURE_API
1632	++loop_count;	3680	++loop_count;
		3681	#endif
		3682	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1633	backend_poll (EV_A_ waittime);	3683	backend_poll (EV_A_ waittime);
		3684	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		3685
		3686	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
		3687
		3688	ECB_MEMORY_FENCE_ACQUIRE;
		3689	if (pipe_write_skipped)
		3690	{
		3691	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		3692	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		3693	}
		3694
1634		3695
1635	/* update ev_rt_now, do magic */	3696	/* update ev_rt_now, do magic */
1636	time_update (EV_A_ waittime + sleeptime);	3697	time_update (EV_A_ waittime + sleeptime);
1637	}	3698	}
1638		3699
…		…
1645	#if EV_IDLE_ENABLE	3706	#if EV_IDLE_ENABLE
1646	/* queue idle watchers unless other events are pending */	3707	/* queue idle watchers unless other events are pending */
1647	idle_reify (EV_A);	3708	idle_reify (EV_A);
1648	#endif	3709	#endif
1649		3710
		3711	#if EV_CHECK_ENABLE
1650	/* queue check watchers, to be executed first */	3712	/* queue check watchers, to be executed first */
1651	if (expect_false (checkcnt))	3713	if (expect_false (checkcnt))
1652	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	3714	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		3715	#endif
1653		3716
1654	call_pending (EV_A);	3717	EV_INVOKE_PENDING;
1655
1656	}	3718	}
1657	while (expect_true (activecnt && !loop_done));	3719	while (expect_true (
		3720	activecnt
		3721	&& !loop_done
		3722	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		3723	));
1658		3724
1659	if (loop_done == EVUNLOOP_ONE)	3725	if (loop_done == EVBREAK_ONE)
1660	loop_done = EVUNLOOP_CANCEL;	3726	loop_done = EVBREAK_CANCEL;
1661	}
1662		3727
		3728	#if EV_FEATURE_API
		3729	--loop_depth;
		3730	#endif
		3731
		3732	return activecnt;
		3733	}
		3734
1663	void	3735	void
1664	ev_unloop (EV_P_ int how)	3736	ev_break (EV_P_ int how) EV_THROW
1665	{	3737	{
1666	loop_done = how;	3738	loop_done = how;
1667	}	3739	}
1668		3740
		3741	void
		3742	ev_ref (EV_P) EV_THROW
		3743	{
		3744	++activecnt;
		3745	}
		3746
		3747	void
		3748	ev_unref (EV_P) EV_THROW
		3749	{
		3750	--activecnt;
		3751	}
		3752
		3753	void
		3754	ev_now_update (EV_P) EV_THROW
		3755	{
		3756	time_update (EV_A_ 1e100);
		3757	}
		3758
		3759	void
		3760	ev_suspend (EV_P) EV_THROW
		3761	{
		3762	ev_now_update (EV_A);
		3763	}
		3764
		3765	void
		3766	ev_resume (EV_P) EV_THROW
		3767	{
		3768	ev_tstamp mn_prev = mn_now;
		3769
		3770	ev_now_update (EV_A);
		3771	timers_reschedule (EV_A_ mn_now - mn_prev);
		3772	#if EV_PERIODIC_ENABLE
		3773	/* TODO: really do this? */
		3774	periodics_reschedule (EV_A);
		3775	#endif
		3776	}
		3777
1669	/*****************************************************************************/	3778	/*****************************************************************************/
		3779	/* singly-linked list management, used when the expected list length is short */
1670		3780
1671	void inline_size	3781	inline_size void
1672	wlist_add (WL *head, WL elem)	3782	wlist_add (WL *head, WL elem)
1673	{	3783	{
1674	elem->next = *head;	3784	elem->next = *head;
1675	*head = elem;	3785	*head = elem;
1676	}	3786	}
1677		3787
1678	void inline_size	3788	inline_size void
1679	wlist_del (WL *head, WL elem)	3789	wlist_del (WL *head, WL elem)
1680	{	3790	{
1681	while (*head)	3791	while (*head)
1682	{	3792	{
1683	if (*head == elem)	3793	if (expect_true (*head == elem))
1684	{	3794	{
1685	*head = elem->next;	3795	*head = elem->next;
1686	return;	3796	break;
1687	}	3797	}
1688		3798
1689	head = &(*head)->next;	3799	head = &(*head)->next;
1690	}	3800	}
1691	}	3801	}
1692		3802
1693	void inline_speed	3803	/* internal, faster, version of ev_clear_pending */
		3804	inline_speed void
1694	clear_pending (EV_P_ W w)	3805	clear_pending (EV_P_ W w)
1695	{	3806	{
1696	if (w->pending)	3807	if (w->pending)
1697	{	3808	{
1698	pendings [ABSPRI (w)][w->pending - 1].w = 0;	3809	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1699	w->pending = 0;	3810	w->pending = 0;
1700	}	3811	}
1701	}	3812	}
1702		3813
1703	int	3814	int
1704	ev_clear_pending (EV_P_ void *w)	3815	ev_clear_pending (EV_P_ void *w) EV_THROW
1705	{	3816	{
1706	W w_ = (W)w;	3817	W w_ = (W)w;
1707	int pending = w_->pending;	3818	int pending = w_->pending;
1708		3819
1709	if (expect_true (pending))	3820	if (expect_true (pending))
1710	{	3821	{
1711	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	3822	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		3823	p->w = (W)&pending_w;
1712	w_->pending = 0;	3824	w_->pending = 0;
1713	p->w = 0;
1714	return p->events;	3825	return p->events;
1715	}	3826	}
1716	else	3827	else
1717	return 0;	3828	return 0;
1718	}	3829	}
1719		3830
1720	void inline_size	3831	inline_size void
1721	pri_adjust (EV_P_ W w)	3832	pri_adjust (EV_P_ W w)
1722	{	3833	{
1723	int pri = w->priority;	3834	int pri = ev_priority (w);
1724	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	3835	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1725	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	3836	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1726	w->priority = pri;	3837	ev_set_priority (w, pri);
1727	}	3838	}
1728		3839
1729	void inline_speed	3840	inline_speed void
1730	ev_start (EV_P_ W w, int active)	3841	ev_start (EV_P_ W w, int active)
1731	{	3842	{
1732	pri_adjust (EV_A_ w);	3843	pri_adjust (EV_A_ w);
1733	w->active = active;	3844	w->active = active;
1734	ev_ref (EV_A);	3845	ev_ref (EV_A);
1735	}	3846	}
1736		3847
1737	void inline_size	3848	inline_size void
1738	ev_stop (EV_P_ W w)	3849	ev_stop (EV_P_ W w)
1739	{	3850	{
1740	ev_unref (EV_A);	3851	ev_unref (EV_A);
1741	w->active = 0;	3852	w->active = 0;
1742	}	3853	}
1743		3854
1744	/*****************************************************************************/	3855	/*****************************************************************************/
1745		3856
1746	void noinline	3857	noinline
		3858	void
1747	ev_io_start (EV_P_ ev_io *w)	3859	ev_io_start (EV_P_ ev_io *w) EV_THROW
1748	{	3860	{
1749	int fd = w->fd;	3861	int fd = w->fd;
1750		3862
1751	if (expect_false (ev_is_active (w)))	3863	if (expect_false (ev_is_active (w)))
1752	return;	3864	return;
1753		3865
1754	assert (("ev_io_start called with negative fd", fd >= 0));	3866	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		3867	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		3868
		3869	EV_FREQUENT_CHECK;
1755		3870
1756	ev_start (EV_A_ (W)w, 1);	3871	ev_start (EV_A_ (W)w, 1);
1757	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	3872	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1758	wlist_add (&anfds[fd].head, (WL)w);	3873	wlist_add (&anfds[fd].head, (WL)w);
1759		3874
		3875	/* common bug, apparently */
		3876	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
		3877
1760	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	3878	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1761	w->events &= ~EV_IOFDSET;	3879	w->events &= ~EV__IOFDSET;
1762	}
1763		3880
		3881	EV_FREQUENT_CHECK;
		3882	}
		3883
1764	void noinline	3884	noinline
		3885	void
1765	ev_io_stop (EV_P_ ev_io *w)	3886	ev_io_stop (EV_P_ ev_io *w) EV_THROW
1766	{	3887	{
1767	clear_pending (EV_A_ (W)w);	3888	clear_pending (EV_A_ (W)w);
1768	if (expect_false (!ev_is_active (w)))	3889	if (expect_false (!ev_is_active (w)))
1769	return;	3890	return;
1770		3891
1771	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	3892	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		3893
		3894	EV_FREQUENT_CHECK;
1772		3895
1773	wlist_del (&anfds[w->fd].head, (WL)w);	3896	wlist_del (&anfds[w->fd].head, (WL)w);
1774	ev_stop (EV_A_ (W)w);	3897	ev_stop (EV_A_ (W)w);
1775		3898
1776	fd_change (EV_A_ w->fd, 1);	3899	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
1777	}
1778		3900
		3901	EV_FREQUENT_CHECK;
		3902	}
		3903
1779	void noinline	3904	noinline
		3905	void
1780	ev_timer_start (EV_P_ ev_timer *w)	3906	ev_timer_start (EV_P_ ev_timer *w) EV_THROW
1781	{	3907	{
1782	if (expect_false (ev_is_active (w)))	3908	if (expect_false (ev_is_active (w)))
1783	return;	3909	return;
1784		3910
1785	((WT)w)->at += mn_now;	3911	ev_at (w) += mn_now;
1786		3912
1787	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	3913	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1788		3914
		3915	EV_FREQUENT_CHECK;
		3916
		3917	++timercnt;
1789	ev_start (EV_A_ (W)w, ++timercnt);	3918	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1790	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	3919	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1791	timers [timercnt - 1] = (WT)w;	3920	ANHE_w (timers [ev_active (w)]) = (WT)w;
1792	upheap (timers, timercnt - 1);	3921	ANHE_at_cache (timers [ev_active (w)]);
		3922	upheap (timers, ev_active (w));
1793		3923
		3924	EV_FREQUENT_CHECK;
		3925
1794	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	3926	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1795	}	3927	}
1796		3928
1797	void noinline	3929	noinline
		3930	void
1798	ev_timer_stop (EV_P_ ev_timer *w)	3931	ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
1799	{	3932	{
1800	clear_pending (EV_A_ (W)w);	3933	clear_pending (EV_A_ (W)w);
1801	if (expect_false (!ev_is_active (w)))	3934	if (expect_false (!ev_is_active (w)))
1802	return;	3935	return;
1803		3936
1804	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	3937	EV_FREQUENT_CHECK;
1805		3938
1806	{	3939	{
1807	int active = ((W)w)->active;	3940	int active = ev_active (w);
1808		3941
		3942	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		3943
		3944	--timercnt;
		3945
1809	if (expect_true (--active < --timercnt))	3946	if (expect_true (active < timercnt + HEAP0))
1810	{	3947	{
1811	timers [active] = timers [timercnt];	3948	timers [active] = timers [timercnt + HEAP0];
1812	adjustheap (timers, timercnt, active);	3949	adjustheap (timers, timercnt, active);
1813	}	3950	}
1814	}	3951	}
1815		3952
1816	((WT)w)->at -= mn_now;	3953	ev_at (w) -= mn_now;
1817		3954
1818	ev_stop (EV_A_ (W)w);	3955	ev_stop (EV_A_ (W)w);
1819	}
1820		3956
		3957	EV_FREQUENT_CHECK;
		3958	}
		3959
1821	void noinline	3960	noinline
		3961	void
1822	ev_timer_again (EV_P_ ev_timer *w)	3962	ev_timer_again (EV_P_ ev_timer *w) EV_THROW
1823	{	3963	{
		3964	EV_FREQUENT_CHECK;
		3965
		3966	clear_pending (EV_A_ (W)w);
		3967
1824	if (ev_is_active (w))	3968	if (ev_is_active (w))
1825	{	3969	{
1826	if (w->repeat)	3970	if (w->repeat)
1827	{	3971	{
1828	((WT)w)->at = mn_now + w->repeat;	3972	ev_at (w) = mn_now + w->repeat;
		3973	ANHE_at_cache (timers [ev_active (w)]);
1829	adjustheap (timers, timercnt, ((W)w)->active - 1);	3974	adjustheap (timers, timercnt, ev_active (w));
1830	}	3975	}
1831	else	3976	else
1832	ev_timer_stop (EV_A_ w);	3977	ev_timer_stop (EV_A_ w);
1833	}	3978	}
1834	else if (w->repeat)	3979	else if (w->repeat)
1835	{	3980	{
1836	w->at = w->repeat;	3981	ev_at (w) = w->repeat;
1837	ev_timer_start (EV_A_ w);	3982	ev_timer_start (EV_A_ w);
1838	}	3983	}
		3984
		3985	EV_FREQUENT_CHECK;
		3986	}
		3987
		3988	ev_tstamp
		3989	ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
		3990	{
		3991	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1839	}	3992	}
1840		3993
1841	#if EV_PERIODIC_ENABLE	3994	#if EV_PERIODIC_ENABLE
1842	void noinline	3995	noinline
		3996	void
1843	ev_periodic_start (EV_P_ ev_periodic *w)	3997	ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
1844	{	3998	{
1845	if (expect_false (ev_is_active (w)))	3999	if (expect_false (ev_is_active (w)))
1846	return;	4000	return;
1847		4001
1848	if (w->reschedule_cb)	4002	if (w->reschedule_cb)
1849	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	4003	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1850	else if (w->interval)	4004	else if (w->interval)
1851	{	4005	{
1852	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	4006	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1853	/* this formula differs from the one in periodic_reify because we do not always round up */	4007	periodic_recalc (EV_A_ w);
1854	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1855	}	4008	}
1856	else	4009	else
1857	((WT)w)->at = w->offset;	4010	ev_at (w) = w->offset;
1858		4011
		4012	EV_FREQUENT_CHECK;
		4013
		4014	++periodiccnt;
1859	ev_start (EV_A_ (W)w, ++periodiccnt);	4015	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1860	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	4016	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1861	periodics [periodiccnt - 1] = (WT)w;	4017	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1862	upheap (periodics, periodiccnt - 1);	4018	ANHE_at_cache (periodics [ev_active (w)]);
		4019	upheap (periodics, ev_active (w));
1863		4020
		4021	EV_FREQUENT_CHECK;
		4022
1864	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	4023	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1865	}	4024	}
1866		4025
1867	void noinline	4026	noinline
		4027	void
1868	ev_periodic_stop (EV_P_ ev_periodic *w)	4028	ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
1869	{	4029	{
1870	clear_pending (EV_A_ (W)w);	4030	clear_pending (EV_A_ (W)w);
1871	if (expect_false (!ev_is_active (w)))	4031	if (expect_false (!ev_is_active (w)))
1872	return;	4032	return;
1873		4033
1874	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	4034	EV_FREQUENT_CHECK;
1875		4035
1876	{	4036	{
1877	int active = ((W)w)->active;	4037	int active = ev_active (w);
1878		4038
		4039	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		4040
		4041	--periodiccnt;
		4042
1879	if (expect_true (--active < --periodiccnt))	4043	if (expect_true (active < periodiccnt + HEAP0))
1880	{	4044	{
1881	periodics [active] = periodics [periodiccnt];	4045	periodics [active] = periodics [periodiccnt + HEAP0];
1882	adjustheap (periodics, periodiccnt, active);	4046	adjustheap (periodics, periodiccnt, active);
1883	}	4047	}
1884	}	4048	}
1885		4049
1886	ev_stop (EV_A_ (W)w);	4050	ev_stop (EV_A_ (W)w);
1887	}
1888		4051
		4052	EV_FREQUENT_CHECK;
		4053	}
		4054
1889	void noinline	4055	noinline
		4056	void
1890	ev_periodic_again (EV_P_ ev_periodic *w)	4057	ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
1891	{	4058	{
1892	/* TODO: use adjustheap and recalculation */	4059	/* TODO: use adjustheap and recalculation */
1893	ev_periodic_stop (EV_A_ w);	4060	ev_periodic_stop (EV_A_ w);
1894	ev_periodic_start (EV_A_ w);	4061	ev_periodic_start (EV_A_ w);
1895	}	4062	}
…		…
1897		4064
1898	#ifndef SA_RESTART	4065	#ifndef SA_RESTART
1899	# define SA_RESTART 0	4066	# define SA_RESTART 0
1900	#endif	4067	#endif
1901		4068
		4069	#if EV_SIGNAL_ENABLE
		4070
1902	void noinline	4071	noinline
		4072	void
1903	ev_signal_start (EV_P_ ev_signal *w)	4073	ev_signal_start (EV_P_ ev_signal *w) EV_THROW
1904	{	4074	{
1905	#if EV_MULTIPLICITY
1906	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1907	#endif
1908	if (expect_false (ev_is_active (w)))	4075	if (expect_false (ev_is_active (w)))
1909	return;	4076	return;
1910		4077
1911	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	4078	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1912		4079
1913	evpipe_init (EV_A);	4080	#if EV_MULTIPLICITY
		4081	assert (("libev: a signal must not be attached to two different loops",
		4082	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1914		4083
		4084	signals [w->signum - 1].loop = EV_A;
		4085	ECB_MEMORY_FENCE_RELEASE;
		4086	#endif
		4087
		4088	EV_FREQUENT_CHECK;
		4089
		4090	#if EV_USE_SIGNALFD
		4091	if (sigfd == -2)
1915	{	4092	{
1916	#ifndef _WIN32	4093	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1917	sigset_t full, prev;	4094	if (sigfd < 0 && errno == EINVAL)
1918	sigfillset (&full);	4095	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1919	sigprocmask (SIG_SETMASK, &full, &prev);
1920	#endif
1921		4096
1922	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	4097	if (sigfd >= 0)
		4098	{
		4099	fd_intern (sigfd); /* doing it twice will not hurt */
1923		4100
1924	#ifndef _WIN32	4101	sigemptyset (&sigfd_set);
1925	sigprocmask (SIG_SETMASK, &prev, 0);	4102
1926	#endif	4103	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		4104	ev_set_priority (&sigfd_w, EV_MAXPRI);
		4105	ev_io_start (EV_A_ &sigfd_w);
		4106	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		4107	}
1927	}	4108	}
		4109
		4110	if (sigfd >= 0)
		4111	{
		4112	/* TODO: check .head */
		4113	sigaddset (&sigfd_set, w->signum);
		4114	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		4115
		4116	signalfd (sigfd, &sigfd_set, 0);
		4117	}
		4118	#endif
1928		4119
1929	ev_start (EV_A_ (W)w, 1);	4120	ev_start (EV_A_ (W)w, 1);
1930	wlist_add (&signals [w->signum - 1].head, (WL)w);	4121	wlist_add (&signals [w->signum - 1].head, (WL)w);
1931		4122
1932	if (!((WL)w)->next)	4123	if (!((WL)w)->next)
		4124	# if EV_USE_SIGNALFD
		4125	if (sigfd < 0) /*TODO*/
		4126	# endif
1933	{	4127	{
1934	#if _WIN32	4128	# ifdef _WIN32
		4129	evpipe_init (EV_A);
		4130
1935	signal (w->signum, sighandler);	4131	signal (w->signum, ev_sighandler);
1936	#else	4132	# else
1937	struct sigaction sa;	4133	struct sigaction sa;
		4134
		4135	evpipe_init (EV_A);
		4136
1938	sa.sa_handler = sighandler;	4137	sa.sa_handler = ev_sighandler;
1939	sigfillset (&sa.sa_mask);	4138	sigfillset (&sa.sa_mask);
1940	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	4139	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1941	sigaction (w->signum, &sa, 0);	4140	sigaction (w->signum, &sa, 0);
		4141
		4142	if (origflags & EVFLAG_NOSIGMASK)
		4143	{
		4144	sigemptyset (&sa.sa_mask);
		4145	sigaddset (&sa.sa_mask, w->signum);
		4146	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		4147	}
1942	#endif	4148	#endif
1943	}	4149	}
1944	}
1945		4150
		4151	EV_FREQUENT_CHECK;
		4152	}
		4153
1946	void noinline	4154	noinline
		4155	void
1947	ev_signal_stop (EV_P_ ev_signal *w)	4156	ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
1948	{	4157	{
1949	clear_pending (EV_A_ (W)w);	4158	clear_pending (EV_A_ (W)w);
1950	if (expect_false (!ev_is_active (w)))	4159	if (expect_false (!ev_is_active (w)))
1951	return;	4160	return;
1952		4161
		4162	EV_FREQUENT_CHECK;
		4163
1953	wlist_del (&signals [w->signum - 1].head, (WL)w);	4164	wlist_del (&signals [w->signum - 1].head, (WL)w);
1954	ev_stop (EV_A_ (W)w);	4165	ev_stop (EV_A_ (W)w);
1955		4166
1956	if (!signals [w->signum - 1].head)	4167	if (!signals [w->signum - 1].head)
1957	signal (w->signum, SIG_DFL);	4168	{
1958	}
1959
1960	void
1961	ev_child_start (EV_P_ ev_child *w)
1962	{
1963	#if EV_MULTIPLICITY	4169	#if EV_MULTIPLICITY
		4170	signals [w->signum - 1].loop = 0; /* unattach from signal */
		4171	#endif
		4172	#if EV_USE_SIGNALFD
		4173	if (sigfd >= 0)
		4174	{
		4175	sigset_t ss;
		4176
		4177	sigemptyset (&ss);
		4178	sigaddset (&ss, w->signum);
		4179	sigdelset (&sigfd_set, w->signum);
		4180
		4181	signalfd (sigfd, &sigfd_set, 0);
		4182	sigprocmask (SIG_UNBLOCK, &ss, 0);
		4183	}
		4184	else
		4185	#endif
		4186	signal (w->signum, SIG_DFL);
		4187	}
		4188
		4189	EV_FREQUENT_CHECK;
		4190	}
		4191
		4192	#endif
		4193
		4194	#if EV_CHILD_ENABLE
		4195
		4196	void
		4197	ev_child_start (EV_P_ ev_child *w) EV_THROW
		4198	{
		4199	#if EV_MULTIPLICITY
1964	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	4200	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1965	#endif	4201	#endif
1966	if (expect_false (ev_is_active (w)))	4202	if (expect_false (ev_is_active (w)))
1967	return;	4203	return;
1968		4204
		4205	EV_FREQUENT_CHECK;
		4206
1969	ev_start (EV_A_ (W)w, 1);	4207	ev_start (EV_A_ (W)w, 1);
1970	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	4208	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1971	}
1972		4209
		4210	EV_FREQUENT_CHECK;
		4211	}
		4212
1973	void	4213	void
1974	ev_child_stop (EV_P_ ev_child *w)	4214	ev_child_stop (EV_P_ ev_child *w) EV_THROW
1975	{	4215	{
1976	clear_pending (EV_A_ (W)w);	4216	clear_pending (EV_A_ (W)w);
1977	if (expect_false (!ev_is_active (w)))	4217	if (expect_false (!ev_is_active (w)))
1978	return;	4218	return;
1979		4219
		4220	EV_FREQUENT_CHECK;
		4221
1980	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	4222	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1981	ev_stop (EV_A_ (W)w);	4223	ev_stop (EV_A_ (W)w);
		4224
		4225	EV_FREQUENT_CHECK;
1982	}	4226	}
		4227
		4228	#endif
1983		4229
1984	#if EV_STAT_ENABLE	4230	#if EV_STAT_ENABLE
1985		4231
1986	# ifdef _WIN32	4232	# ifdef _WIN32
1987	# undef lstat	4233	# undef lstat
1988	# define lstat(a,b) _stati64 (a,b)	4234	# define lstat(a,b) _stati64 (a,b)
1989	# endif	4235	# endif
1990		4236
1991	#define DEF_STAT_INTERVAL 5.0074891	4237	#define DEF_STAT_INTERVAL 5.0074891
		4238	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1992	#define MIN_STAT_INTERVAL 0.1074891	4239	#define MIN_STAT_INTERVAL 0.1074891
1993		4240
1994	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	4241	noinline static void stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1995		4242
1996	#if EV_USE_INOTIFY	4243	#if EV_USE_INOTIFY
1997	# define EV_INOTIFY_BUFSIZE 8192
1998		4244
1999	static void noinline	4245	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		4246	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
		4247
		4248	noinline
		4249	static void
2000	infy_add (EV_P_ ev_stat *w)	4250	infy_add (EV_P_ ev_stat *w)
2001	{	4251	{
2002	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);	4252	w->wd = inotify_add_watch (fs_fd, w->path,
		4253	IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY
		4254	| IN_CREATE | IN_DELETE | IN_MOVED_FROM | IN_MOVED_TO
		4255	| IN_DONT_FOLLOW | IN_MASK_ADD);
2003		4256
2004	if (w->wd < 0)	4257	if (w->wd >= 0)
		4258	{
		4259	struct statfs sfs;
		4260
		4261	/* now local changes will be tracked by inotify, but remote changes won't */
		4262	/* unless the filesystem is known to be local, we therefore still poll */
		4263	/* also do poll on <2.6.25, but with normal frequency */
		4264
		4265	if (!fs_2625)
		4266	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		4267	else if (!statfs (w->path, &sfs)
		4268	&& (sfs.f_type == 0x1373 /* devfs */
		4269	|| sfs.f_type == 0x4006 /* fat */
		4270	|| sfs.f_type == 0x4d44 /* msdos */
		4271	|| sfs.f_type == 0xEF53 /* ext2/3 */
		4272	|| sfs.f_type == 0x72b6 /* jffs2 */
		4273	|| sfs.f_type == 0x858458f6 /* ramfs */
		4274	|| sfs.f_type == 0x5346544e /* ntfs */
		4275	|| sfs.f_type == 0x3153464a /* jfs */
		4276	|| sfs.f_type == 0x9123683e /* btrfs */
		4277	|| sfs.f_type == 0x52654973 /* reiser3 */
		4278	|| sfs.f_type == 0x01021994 /* tmpfs */
		4279	|| sfs.f_type == 0x58465342 /* xfs */))
		4280	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		4281	else
		4282	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2005	{	4283	}
2006	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	4284	else
		4285	{
		4286	/* can't use inotify, continue to stat */
		4287	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2007		4288
2008	/* monitor some parent directory for speedup hints */	4289	/* if path is not there, monitor some parent directory for speedup hints */
		4290	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		4291	/* but an efficiency issue only */
2009	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	4292	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2010	{	4293	{
2011	char path [4096];	4294	char path [4096];
2012	strcpy (path, w->path);	4295	strcpy (path, w->path);
2013		4296
…		…
2016	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	4299	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2017	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	4300	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2018		4301
2019	char *pend = strrchr (path, '/');	4302	char *pend = strrchr (path, '/');
2020		4303
2021	if (!pend)	4304	if (!pend || pend == path)
2022	break; /* whoops, no '/', complain to your admin */	4305	break;
2023		4306
2024	*pend = 0;	4307	*pend = 0;
2025	w->wd = inotify_add_watch (fs_fd, path, mask);	4308	w->wd = inotify_add_watch (fs_fd, path, mask);
2026	}	4309	}
2027	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	4310	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2028	}	4311	}
2029	}	4312	}
2030	else
2031	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2032		4313
2033	if (w->wd >= 0)	4314	if (w->wd >= 0)
2034	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	4315	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2035	}
2036		4316
2037	static void noinline	4317	/* now re-arm timer, if required */
		4318	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		4319	ev_timer_again (EV_A_ &w->timer);
		4320	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		4321	}
		4322
		4323	noinline
		4324	static void
2038	infy_del (EV_P_ ev_stat *w)	4325	infy_del (EV_P_ ev_stat *w)
2039	{	4326	{
2040	int slot;	4327	int slot;
2041	int wd = w->wd;	4328	int wd = w->wd;
2042		4329
2043	if (wd < 0)	4330	if (wd < 0)
2044	return;	4331	return;
2045		4332
2046	w->wd = -2;	4333	w->wd = -2;
2047	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	4334	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2048	wlist_del (&fs_hash [slot].head, (WL)w);	4335	wlist_del (&fs_hash [slot].head, (WL)w);
2049		4336
2050	/* remove this watcher, if others are watching it, they will rearm */	4337	/* remove this watcher, if others are watching it, they will rearm */
2051	inotify_rm_watch (fs_fd, wd);	4338	inotify_rm_watch (fs_fd, wd);
2052	}	4339	}
2053		4340
2054	static void noinline	4341	noinline
		4342	static void
2055	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	4343	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2056	{	4344	{
2057	if (slot < 0)	4345	if (slot < 0)
2058	/* overflow, need to check for all hahs slots */	4346	/* overflow, need to check for all hash slots */
2059	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	4347	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2060	infy_wd (EV_A_ slot, wd, ev);	4348	infy_wd (EV_A_ slot, wd, ev);
2061	else	4349	else
2062	{	4350	{
2063	WL w_;	4351	WL w_;
2064		4352
2065	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	4353	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2066	{	4354	{
2067	ev_stat *w = (ev_stat *)w_;	4355	ev_stat *w = (ev_stat *)w_;
2068	w_ = w_->next; /* lets us remove this watcher and all before it */	4356	w_ = w_->next; /* lets us remove this watcher and all before it */
2069		4357
2070	if (w->wd == wd || wd == -1)	4358	if (w->wd == wd || wd == -1)
2071	{	4359	{
2072	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	4360	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2073	{	4361	{
		4362	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2074	w->wd = -1;	4363	w->wd = -1;
2075	infy_add (EV_A_ w); /* re-add, no matter what */	4364	infy_add (EV_A_ w); /* re-add, no matter what */
2076	}	4365	}
2077		4366
2078	stat_timer_cb (EV_A_ &w->timer, 0);	4367	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2083		4372
2084	static void	4373	static void
2085	infy_cb (EV_P_ ev_io *w, int revents)	4374	infy_cb (EV_P_ ev_io *w, int revents)
2086	{	4375	{
2087	char buf [EV_INOTIFY_BUFSIZE];	4376	char buf [EV_INOTIFY_BUFSIZE];
2088	struct inotify_event *ev = (struct inotify_event *)buf;
2089	int ofs;	4377	int ofs;
2090	int len = read (fs_fd, buf, sizeof (buf));	4378	int len = read (fs_fd, buf, sizeof (buf));
2091		4379
2092	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	4380	for (ofs = 0; ofs < len; )
		4381	{
		4382	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2093	infy_wd (EV_A_ ev->wd, ev->wd, ev);	4383	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		4384	ofs += sizeof (struct inotify_event) + ev->len;
		4385	}
2094	}	4386	}
2095		4387
2096	void inline_size	4388	inline_size ecb_cold
		4389	void
		4390	ev_check_2625 (EV_P)
		4391	{
		4392	/* kernels < 2.6.25 are borked
		4393	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		4394	*/
		4395	if (ev_linux_version () < 0x020619)
		4396	return;
		4397
		4398	fs_2625 = 1;
		4399	}
		4400
		4401	inline_size int
		4402	infy_newfd (void)
		4403	{
		4404	#if defined IN_CLOEXEC && defined IN_NONBLOCK
		4405	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		4406	if (fd >= 0)
		4407	return fd;
		4408	#endif
		4409	return inotify_init ();
		4410	}
		4411
		4412	inline_size void
2097	infy_init (EV_P)	4413	infy_init (EV_P)
2098	{	4414	{
2099	if (fs_fd != -2)	4415	if (fs_fd != -2)
2100	return;	4416	return;
2101		4417
		4418	fs_fd = -1;
		4419
		4420	ev_check_2625 (EV_A);
		4421
2102	fs_fd = inotify_init ();	4422	fs_fd = infy_newfd ();
2103		4423
2104	if (fs_fd >= 0)	4424	if (fs_fd >= 0)
2105	{	4425	{
		4426	fd_intern (fs_fd);
2106	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	4427	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2107	ev_set_priority (&fs_w, EV_MAXPRI);	4428	ev_set_priority (&fs_w, EV_MAXPRI);
2108	ev_io_start (EV_A_ &fs_w);	4429	ev_io_start (EV_A_ &fs_w);
		4430	ev_unref (EV_A);
2109	}	4431	}
2110	}	4432	}
2111		4433
2112	void inline_size	4434	inline_size void
2113	infy_fork (EV_P)	4435	infy_fork (EV_P)
2114	{	4436	{
2115	int slot;	4437	int slot;
2116		4438
2117	if (fs_fd < 0)	4439	if (fs_fd < 0)
2118	return;	4440	return;
2119		4441
		4442	ev_ref (EV_A);
		4443	ev_io_stop (EV_A_ &fs_w);
2120	close (fs_fd);	4444	close (fs_fd);
2121	fs_fd = inotify_init ();	4445	fs_fd = infy_newfd ();
2122		4446
		4447	if (fs_fd >= 0)
		4448	{
		4449	fd_intern (fs_fd);
		4450	ev_io_set (&fs_w, fs_fd, EV_READ);
		4451	ev_io_start (EV_A_ &fs_w);
		4452	ev_unref (EV_A);
		4453	}
		4454
2123	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	4455	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2124	{	4456	{
2125	WL w_ = fs_hash [slot].head;	4457	WL w_ = fs_hash [slot].head;
2126	fs_hash [slot].head = 0;	4458	fs_hash [slot].head = 0;
2127		4459
2128	while (w_)	4460	while (w_)
…		…
2133	w->wd = -1;	4465	w->wd = -1;
2134		4466
2135	if (fs_fd >= 0)	4467	if (fs_fd >= 0)
2136	infy_add (EV_A_ w); /* re-add, no matter what */	4468	infy_add (EV_A_ w); /* re-add, no matter what */
2137	else	4469	else
		4470	{
		4471	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		4472	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2138	ev_timer_start (EV_A_ &w->timer);	4473	ev_timer_again (EV_A_ &w->timer);
		4474	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		4475	}
2139	}	4476	}
2140
2141	}	4477	}
2142	}	4478	}
2143		4479
2144	#endif	4480	#endif
2145		4481
		4482	#ifdef _WIN32
		4483	# define EV_LSTAT(p,b) _stati64 (p, b)
		4484	#else
		4485	# define EV_LSTAT(p,b) lstat (p, b)
		4486	#endif
		4487
2146	void	4488	void
2147	ev_stat_stat (EV_P_ ev_stat *w)	4489	ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2148	{	4490	{
2149	if (lstat (w->path, &w->attr) < 0)	4491	if (lstat (w->path, &w->attr) < 0)
2150	w->attr.st_nlink = 0;	4492	w->attr.st_nlink = 0;
2151	else if (!w->attr.st_nlink)	4493	else if (!w->attr.st_nlink)
2152	w->attr.st_nlink = 1;	4494	w->attr.st_nlink = 1;
2153	}	4495	}
2154		4496
2155	static void noinline	4497	noinline
		4498	static void
2156	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	4499	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2157	{	4500	{
2158	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	4501	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2159		4502
2160	/* we copy this here each the time so that */	4503	ev_statdata prev = w->attr;
2161	/* prev has the old value when the callback gets invoked */
2162	w->prev = w->attr;
2163	ev_stat_stat (EV_A_ w);	4504	ev_stat_stat (EV_A_ w);
2164		4505
2165	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	4506	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2166	if (	4507	if (
2167	w->prev.st_dev != w->attr.st_dev	4508	prev.st_dev != w->attr.st_dev
2168	|| w->prev.st_ino != w->attr.st_ino	4509	|| prev.st_ino != w->attr.st_ino
2169	|| w->prev.st_mode != w->attr.st_mode	4510	|| prev.st_mode != w->attr.st_mode
2170	|| w->prev.st_nlink != w->attr.st_nlink	4511	|| prev.st_nlink != w->attr.st_nlink
2171	|| w->prev.st_uid != w->attr.st_uid	4512	|| prev.st_uid != w->attr.st_uid
2172	|| w->prev.st_gid != w->attr.st_gid	4513	|| prev.st_gid != w->attr.st_gid
2173	|| w->prev.st_rdev != w->attr.st_rdev	4514	|| prev.st_rdev != w->attr.st_rdev
2174	|| w->prev.st_size != w->attr.st_size	4515	|| prev.st_size != w->attr.st_size
2175	|| w->prev.st_atime != w->attr.st_atime	4516	|| prev.st_atime != w->attr.st_atime
2176	|| w->prev.st_mtime != w->attr.st_mtime	4517	|| prev.st_mtime != w->attr.st_mtime
2177	|| w->prev.st_ctime != w->attr.st_ctime	4518	|| prev.st_ctime != w->attr.st_ctime
2178	) {	4519	) {
		4520	/* we only update w->prev on actual differences */
		4521	/* in case we test more often than invoke the callback, */
		4522	/* to ensure that prev is always different to attr */
		4523	w->prev = prev;
		4524
2179	#if EV_USE_INOTIFY	4525	#if EV_USE_INOTIFY
		4526	if (fs_fd >= 0)
		4527	{
2180	infy_del (EV_A_ w);	4528	infy_del (EV_A_ w);
2181	infy_add (EV_A_ w);	4529	infy_add (EV_A_ w);
2182	ev_stat_stat (EV_A_ w); /* avoid race... */	4530	ev_stat_stat (EV_A_ w); /* avoid race... */
		4531	}
2183	#endif	4532	#endif
2184		4533
2185	ev_feed_event (EV_A_ w, EV_STAT);	4534	ev_feed_event (EV_A_ w, EV_STAT);
2186	}	4535	}
2187	}	4536	}
2188		4537
2189	void	4538	void
2190	ev_stat_start (EV_P_ ev_stat *w)	4539	ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2191	{	4540	{
2192	if (expect_false (ev_is_active (w)))	4541	if (expect_false (ev_is_active (w)))
2193	return;	4542	return;
2194		4543
2195	/* since we use memcmp, we need to clear any padding data etc. */
2196	memset (&w->prev, 0, sizeof (ev_statdata));
2197	memset (&w->attr, 0, sizeof (ev_statdata));
2198
2199	ev_stat_stat (EV_A_ w);	4544	ev_stat_stat (EV_A_ w);
2200		4545
		4546	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2201	if (w->interval < MIN_STAT_INTERVAL)	4547	w->interval = MIN_STAT_INTERVAL;
2202	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2203		4548
2204	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	4549	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2205	ev_set_priority (&w->timer, ev_priority (w));	4550	ev_set_priority (&w->timer, ev_priority (w));
2206		4551
2207	#if EV_USE_INOTIFY	4552	#if EV_USE_INOTIFY
2208	infy_init (EV_A);	4553	infy_init (EV_A);
2209		4554
2210	if (fs_fd >= 0)	4555	if (fs_fd >= 0)
2211	infy_add (EV_A_ w);	4556	infy_add (EV_A_ w);
2212	else	4557	else
2213	#endif	4558	#endif
		4559	{
2214	ev_timer_start (EV_A_ &w->timer);	4560	ev_timer_again (EV_A_ &w->timer);
		4561	ev_unref (EV_A);
		4562	}
2215		4563
2216	ev_start (EV_A_ (W)w, 1);	4564	ev_start (EV_A_ (W)w, 1);
2217	}
2218		4565
		4566	EV_FREQUENT_CHECK;
		4567	}
		4568
2219	void	4569	void
2220	ev_stat_stop (EV_P_ ev_stat *w)	4570	ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2221	{	4571	{
2222	clear_pending (EV_A_ (W)w);	4572	clear_pending (EV_A_ (W)w);
2223	if (expect_false (!ev_is_active (w)))	4573	if (expect_false (!ev_is_active (w)))
2224	return;	4574	return;
2225		4575
		4576	EV_FREQUENT_CHECK;
		4577
2226	#if EV_USE_INOTIFY	4578	#if EV_USE_INOTIFY
2227	infy_del (EV_A_ w);	4579	infy_del (EV_A_ w);
2228	#endif	4580	#endif
		4581
		4582	if (ev_is_active (&w->timer))
		4583	{
		4584	ev_ref (EV_A);
2229	ev_timer_stop (EV_A_ &w->timer);	4585	ev_timer_stop (EV_A_ &w->timer);
		4586	}
2230		4587
2231	ev_stop (EV_A_ (W)w);	4588	ev_stop (EV_A_ (W)w);
		4589
		4590	EV_FREQUENT_CHECK;
2232	}	4591	}
2233	#endif	4592	#endif
2234		4593
2235	#if EV_IDLE_ENABLE	4594	#if EV_IDLE_ENABLE
2236	void	4595	void
2237	ev_idle_start (EV_P_ ev_idle *w)	4596	ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2238	{	4597	{
2239	if (expect_false (ev_is_active (w)))	4598	if (expect_false (ev_is_active (w)))
2240	return;	4599	return;
2241		4600
2242	pri_adjust (EV_A_ (W)w);	4601	pri_adjust (EV_A_ (W)w);
		4602
		4603	EV_FREQUENT_CHECK;
2243		4604
2244	{	4605	{
2245	int active = ++idlecnt [ABSPRI (w)];	4606	int active = ++idlecnt [ABSPRI (w)];
2246		4607
2247	++idleall;	4608	++idleall;
2248	ev_start (EV_A_ (W)w, active);	4609	ev_start (EV_A_ (W)w, active);
2249		4610
2250	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	4611	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2251	idles [ABSPRI (w)][active - 1] = w;	4612	idles [ABSPRI (w)][active - 1] = w;
2252	}	4613	}
2253	}
2254		4614
		4615	EV_FREQUENT_CHECK;
		4616	}
		4617
2255	void	4618	void
2256	ev_idle_stop (EV_P_ ev_idle *w)	4619	ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2257	{	4620	{
2258	clear_pending (EV_A_ (W)w);	4621	clear_pending (EV_A_ (W)w);
2259	if (expect_false (!ev_is_active (w)))	4622	if (expect_false (!ev_is_active (w)))
2260	return;	4623	return;
2261		4624
		4625	EV_FREQUENT_CHECK;
		4626
2262	{	4627	{
2263	int active = ((W)w)->active;	4628	int active = ev_active (w);
2264		4629
2265	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	4630	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2266	((W)idles [ABSPRI (w)][active - 1])->active = active;	4631	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2267		4632
2268	ev_stop (EV_A_ (W)w);	4633	ev_stop (EV_A_ (W)w);
2269	--idleall;	4634	--idleall;
2270	}	4635	}
2271	}
2272	#endif
2273		4636
		4637	EV_FREQUENT_CHECK;
		4638	}
		4639	#endif
		4640
		4641	#if EV_PREPARE_ENABLE
2274	void	4642	void
2275	ev_prepare_start (EV_P_ ev_prepare *w)	4643	ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2276	{	4644	{
2277	if (expect_false (ev_is_active (w)))	4645	if (expect_false (ev_is_active (w)))
2278	return;	4646	return;
		4647
		4648	EV_FREQUENT_CHECK;
2279		4649
2280	ev_start (EV_A_ (W)w, ++preparecnt);	4650	ev_start (EV_A_ (W)w, ++preparecnt);
2281	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	4651	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2282	prepares [preparecnt - 1] = w;	4652	prepares [preparecnt - 1] = w;
2283	}
2284		4653
		4654	EV_FREQUENT_CHECK;
		4655	}
		4656
2285	void	4657	void
2286	ev_prepare_stop (EV_P_ ev_prepare *w)	4658	ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2287	{	4659	{
2288	clear_pending (EV_A_ (W)w);	4660	clear_pending (EV_A_ (W)w);
2289	if (expect_false (!ev_is_active (w)))	4661	if (expect_false (!ev_is_active (w)))
2290	return;	4662	return;
2291		4663
		4664	EV_FREQUENT_CHECK;
		4665
2292	{	4666	{
2293	int active = ((W)w)->active;	4667	int active = ev_active (w);
		4668
2294	prepares [active - 1] = prepares [--preparecnt];	4669	prepares [active - 1] = prepares [--preparecnt];
2295	((W)prepares [active - 1])->active = active;	4670	ev_active (prepares [active - 1]) = active;
2296	}	4671	}
2297		4672
2298	ev_stop (EV_A_ (W)w);	4673	ev_stop (EV_A_ (W)w);
2299	}
2300		4674
		4675	EV_FREQUENT_CHECK;
		4676	}
		4677	#endif
		4678
		4679	#if EV_CHECK_ENABLE
2301	void	4680	void
2302	ev_check_start (EV_P_ ev_check *w)	4681	ev_check_start (EV_P_ ev_check *w) EV_THROW
2303	{	4682	{
2304	if (expect_false (ev_is_active (w)))	4683	if (expect_false (ev_is_active (w)))
2305	return;	4684	return;
		4685
		4686	EV_FREQUENT_CHECK;
2306		4687
2307	ev_start (EV_A_ (W)w, ++checkcnt);	4688	ev_start (EV_A_ (W)w, ++checkcnt);
2308	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	4689	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2309	checks [checkcnt - 1] = w;	4690	checks [checkcnt - 1] = w;
2310	}
2311		4691
		4692	EV_FREQUENT_CHECK;
		4693	}
		4694
2312	void	4695	void
2313	ev_check_stop (EV_P_ ev_check *w)	4696	ev_check_stop (EV_P_ ev_check *w) EV_THROW
2314	{	4697	{
2315	clear_pending (EV_A_ (W)w);	4698	clear_pending (EV_A_ (W)w);
2316	if (expect_false (!ev_is_active (w)))	4699	if (expect_false (!ev_is_active (w)))
2317	return;	4700	return;
2318		4701
		4702	EV_FREQUENT_CHECK;
		4703
2319	{	4704	{
2320	int active = ((W)w)->active;	4705	int active = ev_active (w);
		4706
2321	checks [active - 1] = checks [--checkcnt];	4707	checks [active - 1] = checks [--checkcnt];
2322	((W)checks [active - 1])->active = active;	4708	ev_active (checks [active - 1]) = active;
2323	}	4709	}
2324		4710
2325	ev_stop (EV_A_ (W)w);	4711	ev_stop (EV_A_ (W)w);
		4712
		4713	EV_FREQUENT_CHECK;
2326	}	4714	}
		4715	#endif
2327		4716
2328	#if EV_EMBED_ENABLE	4717	#if EV_EMBED_ENABLE
2329	void noinline	4718	noinline
		4719	void
2330	ev_embed_sweep (EV_P_ ev_embed *w)	4720	ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2331	{	4721	{
2332	ev_loop (w->other, EVLOOP_NONBLOCK);	4722	ev_run (w->other, EVRUN_NOWAIT);
2333	}	4723	}
2334		4724
2335	static void	4725	static void
2336	embed_io_cb (EV_P_ ev_io *io, int revents)	4726	embed_io_cb (EV_P_ ev_io *io, int revents)
2337	{	4727	{
2338	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	4728	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2339		4729
2340	if (ev_cb (w))	4730	if (ev_cb (w))
2341	ev_feed_event (EV_A_ (W)w, EV_EMBED);	4731	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2342	else	4732	else
2343	ev_loop (w->other, EVLOOP_NONBLOCK);	4733	ev_run (w->other, EVRUN_NOWAIT);
2344	}	4734	}
2345		4735
2346	static void	4736	static void
2347	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	4737	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2348	{	4738	{
2349	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	4739	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2350		4740
2351	{	4741	{
2352	struct ev_loop *loop = w->other;	4742	EV_P = w->other;
2353		4743
2354	while (fdchangecnt)	4744	while (fdchangecnt)
2355	{	4745	{
2356	fd_reify (EV_A);	4746	fd_reify (EV_A);
2357	ev_loop (EV_A_ EVLOOP_NONBLOCK);	4747	ev_run (EV_A_ EVRUN_NOWAIT);
2358	}	4748	}
2359	}	4749	}
		4750	}
		4751
		4752	static void
		4753	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		4754	{
		4755	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		4756
		4757	ev_embed_stop (EV_A_ w);
		4758
		4759	{
		4760	EV_P = w->other;
		4761
		4762	ev_loop_fork (EV_A);
		4763	ev_run (EV_A_ EVRUN_NOWAIT);
		4764	}
		4765
		4766	ev_embed_start (EV_A_ w);
2360	}	4767	}
2361		4768
2362	#if 0	4769	#if 0
2363	static void	4770	static void
2364	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	4771	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2366	ev_idle_stop (EV_A_ idle);	4773	ev_idle_stop (EV_A_ idle);
2367	}	4774	}
2368	#endif	4775	#endif
2369		4776
2370	void	4777	void
2371	ev_embed_start (EV_P_ ev_embed *w)	4778	ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2372	{	4779	{
2373	if (expect_false (ev_is_active (w)))	4780	if (expect_false (ev_is_active (w)))
2374	return;	4781	return;
2375		4782
2376	{	4783	{
2377	struct ev_loop *loop = w->other;	4784	EV_P = w->other;
2378	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	4785	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2379	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	4786	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2380	}	4787	}
		4788
		4789	EV_FREQUENT_CHECK;
2381		4790
2382	ev_set_priority (&w->io, ev_priority (w));	4791	ev_set_priority (&w->io, ev_priority (w));
2383	ev_io_start (EV_A_ &w->io);	4792	ev_io_start (EV_A_ &w->io);
2384		4793
2385	ev_prepare_init (&w->prepare, embed_prepare_cb);	4794	ev_prepare_init (&w->prepare, embed_prepare_cb);
2386	ev_set_priority (&w->prepare, EV_MINPRI);	4795	ev_set_priority (&w->prepare, EV_MINPRI);
2387	ev_prepare_start (EV_A_ &w->prepare);	4796	ev_prepare_start (EV_A_ &w->prepare);
2388		4797
		4798	ev_fork_init (&w->fork, embed_fork_cb);
		4799	ev_fork_start (EV_A_ &w->fork);
		4800
2389	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	4801	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2390		4802
2391	ev_start (EV_A_ (W)w, 1);	4803	ev_start (EV_A_ (W)w, 1);
2392	}
2393		4804
		4805	EV_FREQUENT_CHECK;
		4806	}
		4807
2394	void	4808	void
2395	ev_embed_stop (EV_P_ ev_embed *w)	4809	ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2396	{	4810	{
2397	clear_pending (EV_A_ (W)w);	4811	clear_pending (EV_A_ (W)w);
2398	if (expect_false (!ev_is_active (w)))	4812	if (expect_false (!ev_is_active (w)))
2399	return;	4813	return;
2400		4814
		4815	EV_FREQUENT_CHECK;
		4816
2401	ev_io_stop (EV_A_ &w->io);	4817	ev_io_stop (EV_A_ &w->io);
2402	ev_prepare_stop (EV_A_ &w->prepare);	4818	ev_prepare_stop (EV_A_ &w->prepare);
		4819	ev_fork_stop (EV_A_ &w->fork);
2403		4820
2404	ev_stop (EV_A_ (W)w);	4821	ev_stop (EV_A_ (W)w);
		4822
		4823	EV_FREQUENT_CHECK;
2405	}	4824	}
2406	#endif	4825	#endif
2407		4826
2408	#if EV_FORK_ENABLE	4827	#if EV_FORK_ENABLE
2409	void	4828	void
2410	ev_fork_start (EV_P_ ev_fork *w)	4829	ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2411	{	4830	{
2412	if (expect_false (ev_is_active (w)))	4831	if (expect_false (ev_is_active (w)))
2413	return;	4832	return;
		4833
		4834	EV_FREQUENT_CHECK;
2414		4835
2415	ev_start (EV_A_ (W)w, ++forkcnt);	4836	ev_start (EV_A_ (W)w, ++forkcnt);
2416	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	4837	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2417	forks [forkcnt - 1] = w;	4838	forks [forkcnt - 1] = w;
2418	}
2419		4839
		4840	EV_FREQUENT_CHECK;
		4841	}
		4842
2420	void	4843	void
2421	ev_fork_stop (EV_P_ ev_fork *w)	4844	ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2422	{	4845	{
2423	clear_pending (EV_A_ (W)w);	4846	clear_pending (EV_A_ (W)w);
2424	if (expect_false (!ev_is_active (w)))	4847	if (expect_false (!ev_is_active (w)))
2425	return;	4848	return;
2426		4849
		4850	EV_FREQUENT_CHECK;
		4851
2427	{	4852	{
2428	int active = ((W)w)->active;	4853	int active = ev_active (w);
		4854
2429	forks [active - 1] = forks [--forkcnt];	4855	forks [active - 1] = forks [--forkcnt];
2430	((W)forks [active - 1])->active = active;	4856	ev_active (forks [active - 1]) = active;
2431	}	4857	}
2432		4858
2433	ev_stop (EV_A_ (W)w);	4859	ev_stop (EV_A_ (W)w);
2434	}
2435	#endif
2436		4860
		4861	EV_FREQUENT_CHECK;
		4862	}
		4863	#endif
		4864
2437	#if EV_ASYNC_ENABLE	4865	#if EV_CLEANUP_ENABLE
2438	void	4866	void
2439	ev_async_start (EV_P_ ev_async *w)	4867	ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
2440	{	4868	{
2441	if (expect_false (ev_is_active (w)))	4869	if (expect_false (ev_is_active (w)))
2442	return;	4870	return;
2443		4871
		4872	EV_FREQUENT_CHECK;
		4873
		4874	ev_start (EV_A_ (W)w, ++cleanupcnt);
		4875	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		4876	cleanups [cleanupcnt - 1] = w;
		4877
		4878	/* cleanup watchers should never keep a refcount on the loop */
		4879	ev_unref (EV_A);
		4880	EV_FREQUENT_CHECK;
		4881	}
		4882
		4883	void
		4884	ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
		4885	{
		4886	clear_pending (EV_A_ (W)w);
		4887	if (expect_false (!ev_is_active (w)))
		4888	return;
		4889
		4890	EV_FREQUENT_CHECK;
		4891	ev_ref (EV_A);
		4892
		4893	{
		4894	int active = ev_active (w);
		4895
		4896	cleanups [active - 1] = cleanups [--cleanupcnt];
		4897	ev_active (cleanups [active - 1]) = active;
		4898	}
		4899
		4900	ev_stop (EV_A_ (W)w);
		4901
		4902	EV_FREQUENT_CHECK;
		4903	}
		4904	#endif
		4905
		4906	#if EV_ASYNC_ENABLE
		4907	void
		4908	ev_async_start (EV_P_ ev_async *w) EV_THROW
		4909	{
		4910	if (expect_false (ev_is_active (w)))
		4911	return;
		4912
		4913	w->sent = 0;
		4914
2444	evpipe_init (EV_A);	4915	evpipe_init (EV_A);
		4916
		4917	EV_FREQUENT_CHECK;
2445		4918
2446	ev_start (EV_A_ (W)w, ++asynccnt);	4919	ev_start (EV_A_ (W)w, ++asynccnt);
2447	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	4920	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2448	asyncs [asynccnt - 1] = w;	4921	asyncs [asynccnt - 1] = w;
2449	}
2450		4922
		4923	EV_FREQUENT_CHECK;
		4924	}
		4925
2451	void	4926	void
2452	ev_async_stop (EV_P_ ev_async *w)	4927	ev_async_stop (EV_P_ ev_async *w) EV_THROW
2453	{	4928	{
2454	clear_pending (EV_A_ (W)w);	4929	clear_pending (EV_A_ (W)w);
2455	if (expect_false (!ev_is_active (w)))	4930	if (expect_false (!ev_is_active (w)))
2456	return;	4931	return;
2457		4932
		4933	EV_FREQUENT_CHECK;
		4934
2458	{	4935	{
2459	int active = ((W)w)->active;	4936	int active = ev_active (w);
		4937
2460	asyncs [active - 1] = asyncs [--asynccnt];	4938	asyncs [active - 1] = asyncs [--asynccnt];
2461	((W)asyncs [active - 1])->active = active;	4939	ev_active (asyncs [active - 1]) = active;
2462	}	4940	}
2463		4941
2464	ev_stop (EV_A_ (W)w);	4942	ev_stop (EV_A_ (W)w);
2465	}
2466		4943
		4944	EV_FREQUENT_CHECK;
		4945	}
		4946
2467	void	4947	void
2468	ev_async_send (EV_P_ ev_async *w)	4948	ev_async_send (EV_P_ ev_async *w) EV_THROW
2469	{	4949	{
2470	w->sent = 1;	4950	w->sent = 1;
2471	evpipe_write (EV_A_ &gotasync);	4951	evpipe_write (EV_A_ &async_pending);
2472	}	4952	}
2473	#endif	4953	#endif
2474		4954
2475	/*****************************************************************************/	4955	/*****************************************************************************/
2476		4956
…		…
2486	once_cb (EV_P_ struct ev_once *once, int revents)	4966	once_cb (EV_P_ struct ev_once *once, int revents)
2487	{	4967	{
2488	void (*cb)(int revents, void *arg) = once->cb;	4968	void (*cb)(int revents, void *arg) = once->cb;
2489	void *arg = once->arg;	4969	void *arg = once->arg;
2490		4970
2491	ev_io_stop (EV_A_ &once->io);	4971	ev_io_stop (EV_A_ &once->io);
2492	ev_timer_stop (EV_A_ &once->to);	4972	ev_timer_stop (EV_A_ &once->to);
2493	ev_free (once);	4973	ev_free (once);
2494		4974
2495	cb (revents, arg);	4975	cb (revents, arg);
2496	}	4976	}
2497		4977
2498	static void	4978	static void
2499	once_cb_io (EV_P_ ev_io *w, int revents)	4979	once_cb_io (EV_P_ ev_io *w, int revents)
2500	{	4980	{
2501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	4981	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		4982
		4983	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2502	}	4984	}
2503		4985
2504	static void	4986	static void
2505	once_cb_to (EV_P_ ev_timer *w, int revents)	4987	once_cb_to (EV_P_ ev_timer *w, int revents)
2506	{	4988	{
2507	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	4989	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
2508	}
2509		4990
		4991	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
		4992	}
		4993
2510	void	4994	void
2511	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	4995	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2512	{	4996	{
2513	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	4997	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2514		4998
2515	if (expect_false (!once))	4999	if (expect_false (!once))
2516	{	5000	{
2517	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	5001	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2518	return;	5002	return;
2519	}	5003	}
2520		5004
2521	once->cb = cb;	5005	once->cb = cb;
2522	once->arg = arg;	5006	once->arg = arg;
…		…
2534	ev_timer_set (&once->to, timeout, 0.);	5018	ev_timer_set (&once->to, timeout, 0.);
2535	ev_timer_start (EV_A_ &once->to);	5019	ev_timer_start (EV_A_ &once->to);
2536	}	5020	}
2537	}	5021	}
2538		5022
		5023	/*****************************************************************************/
		5024
		5025	#if EV_WALK_ENABLE
		5026	ecb_cold
		5027	void
		5028	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
		5029	{
		5030	int i, j;
		5031	ev_watcher_list *wl, *wn;
		5032
		5033	if (types & (EV_IO | EV_EMBED))
		5034	for (i = 0; i < anfdmax; ++i)
		5035	for (wl = anfds [i].head; wl; )
		5036	{
		5037	wn = wl->next;
		5038
		5039	#if EV_EMBED_ENABLE
		5040	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		5041	{
		5042	if (types & EV_EMBED)
		5043	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		5044	}
		5045	else
		5046	#endif
		5047	#if EV_USE_INOTIFY
		5048	if (ev_cb ((ev_io *)wl) == infy_cb)
		5049	;
		5050	else
		5051	#endif
		5052	if ((ev_io *)wl != &pipe_w)
		5053	if (types & EV_IO)
		5054	cb (EV_A_ EV_IO, wl);
		5055
		5056	wl = wn;
		5057	}
		5058
		5059	if (types & (EV_TIMER | EV_STAT))
		5060	for (i = timercnt + HEAP0; i-- > HEAP0; )
		5061	#if EV_STAT_ENABLE
		5062	/*TODO: timer is not always active*/
		5063	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		5064	{
		5065	if (types & EV_STAT)
		5066	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		5067	}
		5068	else
		5069	#endif
		5070	if (types & EV_TIMER)
		5071	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		5072
		5073	#if EV_PERIODIC_ENABLE
		5074	if (types & EV_PERIODIC)
		5075	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		5076	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		5077	#endif
		5078
		5079	#if EV_IDLE_ENABLE
		5080	if (types & EV_IDLE)
		5081	for (j = NUMPRI; j--; )
		5082	for (i = idlecnt [j]; i--; )
		5083	cb (EV_A_ EV_IDLE, idles [j][i]);
		5084	#endif
		5085
		5086	#if EV_FORK_ENABLE
		5087	if (types & EV_FORK)
		5088	for (i = forkcnt; i--; )
		5089	if (ev_cb (forks [i]) != embed_fork_cb)
		5090	cb (EV_A_ EV_FORK, forks [i]);
		5091	#endif
		5092
		5093	#if EV_ASYNC_ENABLE
		5094	if (types & EV_ASYNC)
		5095	for (i = asynccnt; i--; )
		5096	cb (EV_A_ EV_ASYNC, asyncs [i]);
		5097	#endif
		5098
		5099	#if EV_PREPARE_ENABLE
		5100	if (types & EV_PREPARE)
		5101	for (i = preparecnt; i--; )
		5102	# if EV_EMBED_ENABLE
		5103	if (ev_cb (prepares [i]) != embed_prepare_cb)
		5104	# endif
		5105	cb (EV_A_ EV_PREPARE, prepares [i]);
		5106	#endif
		5107
		5108	#if EV_CHECK_ENABLE
		5109	if (types & EV_CHECK)
		5110	for (i = checkcnt; i--; )
		5111	cb (EV_A_ EV_CHECK, checks [i]);
		5112	#endif
		5113
		5114	#if EV_SIGNAL_ENABLE
		5115	if (types & EV_SIGNAL)
		5116	for (i = 0; i < EV_NSIG - 1; ++i)
		5117	for (wl = signals [i].head; wl; )
		5118	{
		5119	wn = wl->next;
		5120	cb (EV_A_ EV_SIGNAL, wl);
		5121	wl = wn;
		5122	}
		5123	#endif
		5124
		5125	#if EV_CHILD_ENABLE
		5126	if (types & EV_CHILD)
		5127	for (i = (EV_PID_HASHSIZE); i--; )
		5128	for (wl = childs [i]; wl; )
		5129	{
		5130	wn = wl->next;
		5131	cb (EV_A_ EV_CHILD, wl);
		5132	wl = wn;
		5133	}
		5134	#endif
		5135	/* EV_STAT 0x00001000 /* stat data changed */
		5136	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		5137	}
		5138	#endif
		5139
2539	#if EV_MULTIPLICITY	5140	#if EV_MULTIPLICITY
2540	#include "ev_wrap.h"	5141	#include "ev_wrap.h"
2541	#endif	5142	#endif
2542		5143
2543	#ifdef __cplusplus
2544	}
2545	#endif
2546

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines