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Comparing libev/ev.c (file contents):
Revision 1.208 by root, Fri Feb 1 13:22:48 2008 UTC vs.
Revision 1.387 by root, Wed Jul 20 01:04:43 2011 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus	40	/* this big block deduces configuration from config.h */
41	extern "C" {
42	#endif
43
44	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
45	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
46	# include EV_CONFIG_H	43	# include EV_CONFIG_H
47	# else	44	# else
48	# include "config.h"	45	# include "config.h"
49	# endif	46	# endif
50		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
		53
		54	# if HAVE_CLOCK_SYSCALL
		55	# ifndef EV_USE_CLOCK_SYSCALL
		56	# define EV_USE_CLOCK_SYSCALL 1
		57	# ifndef EV_USE_REALTIME
		58	# define EV_USE_REALTIME 0
		59	# endif
		60	# ifndef EV_USE_MONOTONIC
		61	# define EV_USE_MONOTONIC 1
		62	# endif
		63	# endif
		64	# elif !defined(EV_USE_CLOCK_SYSCALL)
		65	# define EV_USE_CLOCK_SYSCALL 0
		66	# endif
		67
51	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
52	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
53	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
54	# endif	71	# endif
55	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
56	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
57	# endif	74	# endif
58	# else	75	# else
59	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
60	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
61	# endif	78	# endif
62	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
63	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
64	# endif	81	# endif
65	# endif	82	# endif
66		83
		84	# if HAVE_NANOSLEEP
67	# ifndef EV_USE_NANOSLEEP	85	# ifndef EV_USE_NANOSLEEP
68	# if HAVE_NANOSLEEP
69	# define EV_USE_NANOSLEEP 1	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		87	# endif
70	# else	88	# else
		89	# undef EV_USE_NANOSLEEP
71	# define EV_USE_NANOSLEEP 0	90	# define EV_USE_NANOSLEEP 0
		91	# endif
		92
		93	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		94	# ifndef EV_USE_SELECT
		95	# define EV_USE_SELECT EV_FEATURE_BACKENDS
72	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
73	# endif	100	# endif
74		101
		102	# if HAVE_POLL && HAVE_POLL_H
75	# ifndef EV_USE_SELECT	103	# ifndef EV_USE_POLL
76	# if HAVE_SELECT && HAVE_SYS_SELECT_H	104	# define EV_USE_POLL EV_FEATURE_BACKENDS
77	# define EV_USE_SELECT 1
78	# else
79	# define EV_USE_SELECT 0
80	# endif	105	# endif
81	# endif
82
83	# ifndef EV_USE_POLL
84	# if HAVE_POLL && HAVE_POLL_H
85	# define EV_USE_POLL 1
86	# else	106	# else
		107	# undef EV_USE_POLL
87	# define EV_USE_POLL 0	108	# define EV_USE_POLL 0
88	# endif
89	# endif	109	# endif
90		110
91	# ifndef EV_USE_EPOLL
92	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
94	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95	# define EV_USE_EPOLL 0
96	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
97	# endif	118	# endif
98		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
100	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101	# define EV_USE_KQUEUE 1
102	# else
103	# define EV_USE_KQUEUE 0
104	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
105	# endif	127	# endif
106		128
107	# ifndef EV_USE_PORT
108	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
109	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
110	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
111	# define EV_USE_PORT 0
112	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
113	# endif	136	# endif
114		137
115	# ifndef EV_USE_INOTIFY
116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
118	# else
119	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
120	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
121	# endif	145	# endif
122		146
		147	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		148	# ifndef EV_USE_SIGNALFD
		149	# define EV_USE_SIGNALFD EV_FEATURE_OS
		150	# endif
		151	# else
		152	# undef EV_USE_SIGNALFD
		153	# define EV_USE_SIGNALFD 0
123	#endif	154	# endif
124		155
125	#include <math.h>	156	# if HAVE_EVENTFD
		157	# ifndef EV_USE_EVENTFD
		158	# define EV_USE_EVENTFD EV_FEATURE_OS
		159	# endif
		160	# else
		161	# undef EV_USE_EVENTFD
		162	# define EV_USE_EVENTFD 0
		163	# endif
		164
		165	#endif
		166
126	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
127	#include <fcntl.h>	169	#include <fcntl.h>
128	#include <stddef.h>	170	#include <stddef.h>
129		171
130	#include <stdio.h>	172	#include <stdio.h>
131		173
132	#include <assert.h>	174	#include <assert.h>
133	#include <errno.h>	175	#include <errno.h>
134	#include <sys/types.h>	176	#include <sys/types.h>
135	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
136		179
137	#include <signal.h>	180	#include <signal.h>
138		181
139	#ifdef EV_H	182	#ifdef EV_H
140	# include EV_H	183	# include EV_H
141	#else	184	#else
142	# include "ev.h"	185	# include "ev.h"
143	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
144		189
145	#ifndef _WIN32	190	#ifndef _WIN32
146	# include <sys/time.h>	191	# include <sys/time.h>
147	# include <sys/wait.h>	192	# include <sys/wait.h>
148	# include <unistd.h>	193	# include <unistd.h>
149	#else	194	#else
		195	# include <io.h>
150	# define WIN32_LEAN_AND_MEAN	196	# define WIN32_LEAN_AND_MEAN
151	# include <windows.h>	197	# include <windows.h>
152	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
153	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
154	# endif	200	# endif
		201	# undef EV_AVOID_STDIO
		202	#endif
		203
		204	/* OS X, in its infinite idiocy, actually HARDCODES
		205	* a limit of 1024 into their select. Where people have brains,
		206	* OS X engineers apparently have a vacuum. Or maybe they were
		207	* ordered to have a vacuum, or they do anything for money.
		208	* This might help. Or not.
		209	*/
		210	#define _DARWIN_UNLIMITED_SELECT 1
		211
		212	/* this block tries to deduce configuration from header-defined symbols and defaults */
		213
		214	/* try to deduce the maximum number of signals on this platform */
		215	#if defined (EV_NSIG)
		216	/* use what's provided */
		217	#elif defined (NSIG)
		218	# define EV_NSIG (NSIG)
		219	#elif defined(_NSIG)
		220	# define EV_NSIG (_NSIG)
		221	#elif defined (SIGMAX)
		222	# define EV_NSIG (SIGMAX+1)
		223	#elif defined (SIG_MAX)
		224	# define EV_NSIG (SIG_MAX+1)
		225	#elif defined (_SIG_MAX)
		226	# define EV_NSIG (_SIG_MAX+1)
		227	#elif defined (MAXSIG)
		228	# define EV_NSIG (MAXSIG+1)
		229	#elif defined (MAX_SIG)
		230	# define EV_NSIG (MAX_SIG+1)
		231	#elif defined (SIGARRAYSIZE)
		232	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		233	#elif defined (_sys_nsig)
		234	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		235	#else
		236	# error "unable to find value for NSIG, please report"
		237	/* to make it compile regardless, just remove the above line, */
		238	/* but consider reporting it, too! :) */
		239	# define EV_NSIG 65
		240	#endif
		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
		246	#ifndef EV_USE_CLOCK_SYSCALL
		247	# if __linux && __GLIBC__ >= 2
		248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
		249	# else
		250	# define EV_USE_CLOCK_SYSCALL 0
155	#endif	251	# endif
156		252	#endif
157	/**/
158		253
159	#ifndef EV_USE_MONOTONIC	254	#ifndef EV_USE_MONOTONIC
		255	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		256	# define EV_USE_MONOTONIC EV_FEATURE_OS
		257	# else
160	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
		259	# endif
161	#endif	260	#endif
162		261
163	#ifndef EV_USE_REALTIME	262	#ifndef EV_USE_REALTIME
164	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165	#endif	264	#endif
166		265
167	#ifndef EV_USE_NANOSLEEP	266	#ifndef EV_USE_NANOSLEEP
		267	# if _POSIX_C_SOURCE >= 199309L
		268	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		269	# else
168	# define EV_USE_NANOSLEEP 0	270	# define EV_USE_NANOSLEEP 0
		271	# endif
169	#endif	272	#endif
170		273
171	#ifndef EV_USE_SELECT	274	#ifndef EV_USE_SELECT
172	# define EV_USE_SELECT 1	275	# define EV_USE_SELECT EV_FEATURE_BACKENDS
173	#endif	276	#endif
174		277
175	#ifndef EV_USE_POLL	278	#ifndef EV_USE_POLL
176	# ifdef _WIN32	279	# ifdef _WIN32
177	# define EV_USE_POLL 0	280	# define EV_USE_POLL 0
178	# else	281	# else
179	# define EV_USE_POLL 1	282	# define EV_USE_POLL EV_FEATURE_BACKENDS
180	# endif	283	# endif
181	#endif	284	#endif
182		285
183	#ifndef EV_USE_EPOLL	286	#ifndef EV_USE_EPOLL
		287	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		288	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
		289	# else
184	# define EV_USE_EPOLL 0	290	# define EV_USE_EPOLL 0
		291	# endif
185	#endif	292	#endif
186		293
187	#ifndef EV_USE_KQUEUE	294	#ifndef EV_USE_KQUEUE
188	# define EV_USE_KQUEUE 0	295	# define EV_USE_KQUEUE 0
189	#endif	296	#endif
…		…
191	#ifndef EV_USE_PORT	298	#ifndef EV_USE_PORT
192	# define EV_USE_PORT 0	299	# define EV_USE_PORT 0
193	#endif	300	#endif
194		301
195	#ifndef EV_USE_INOTIFY	302	#ifndef EV_USE_INOTIFY
		303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		304	# define EV_USE_INOTIFY EV_FEATURE_OS
		305	# else
196	# define EV_USE_INOTIFY 0	306	# define EV_USE_INOTIFY 0
		307	# endif
197	#endif	308	#endif
198		309
199	#ifndef EV_PID_HASHSIZE	310	#ifndef EV_PID_HASHSIZE
200	# if EV_MINIMAL	311	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201	# define EV_PID_HASHSIZE 1	312	#endif
		313
		314	#ifndef EV_INOTIFY_HASHSIZE
		315	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
		316	#endif
		317
		318	#ifndef EV_USE_EVENTFD
		319	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		320	# define EV_USE_EVENTFD EV_FEATURE_OS
202	# else	321	# else
203	# define EV_PID_HASHSIZE 16	322	# define EV_USE_EVENTFD 0
204	# endif	323	# endif
205	#endif	324	#endif
206		325
207	#ifndef EV_INOTIFY_HASHSIZE	326	#ifndef EV_USE_SIGNALFD
208	# if EV_MINIMAL	327	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209	# define EV_INOTIFY_HASHSIZE 1	328	# define EV_USE_SIGNALFD EV_FEATURE_OS
210	# else	329	# else
211	# define EV_INOTIFY_HASHSIZE 16	330	# define EV_USE_SIGNALFD 0
212	# endif	331	# endif
213	#endif	332	#endif
214		333
215	/**/	334	#if 0 /* debugging */
		335	# define EV_VERIFY 3
		336	# define EV_USE_4HEAP 1
		337	# define EV_HEAP_CACHE_AT 1
		338	#endif
		339
		340	#ifndef EV_VERIFY
		341	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		342	#endif
		343
		344	#ifndef EV_USE_4HEAP
		345	# define EV_USE_4HEAP EV_FEATURE_DATA
		346	#endif
		347
		348	#ifndef EV_HEAP_CACHE_AT
		349	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		350	#endif
		351
		352	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		353	/* which makes programs even slower. might work on other unices, too. */
		354	#if EV_USE_CLOCK_SYSCALL
		355	# include <syscall.h>
		356	# ifdef SYS_clock_gettime
		357	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		358	# undef EV_USE_MONOTONIC
		359	# define EV_USE_MONOTONIC 1
		360	# else
		361	# undef EV_USE_CLOCK_SYSCALL
		362	# define EV_USE_CLOCK_SYSCALL 0
		363	# endif
		364	#endif
		365
		366	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		367
		368	#ifdef _AIX
		369	/* AIX has a completely broken poll.h header */
		370	# undef EV_USE_POLL
		371	# define EV_USE_POLL 0
		372	#endif
216		373
217	#ifndef CLOCK_MONOTONIC	374	#ifndef CLOCK_MONOTONIC
218	# undef EV_USE_MONOTONIC	375	# undef EV_USE_MONOTONIC
219	# define EV_USE_MONOTONIC 0	376	# define EV_USE_MONOTONIC 0
220	#endif	377	#endif
…		…
228	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
229	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
230	#endif	387	#endif
231		388
232	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
233	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
234	# include <sys/select.h>	392	# include <sys/select.h>
235	# endif	393	# endif
236	#endif	394	#endif
237		395
238	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
		397	# include <sys/statfs.h>
239	# include <sys/inotify.h>	398	# include <sys/inotify.h>
		399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		400	# ifndef IN_DONT_FOLLOW
		401	# undef EV_USE_INOTIFY
		402	# define EV_USE_INOTIFY 0
		403	# endif
240	#endif	404	#endif
241		405
242	#if EV_SELECT_IS_WINSOCKET	406	#if EV_SELECT_IS_WINSOCKET
243	# include <winsock.h>	407	# include <winsock.h>
244	#endif	408	#endif
245		409
		410	#if EV_USE_EVENTFD
		411	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		412	# include <stdint.h>
		413	# ifndef EFD_NONBLOCK
		414	# define EFD_NONBLOCK O_NONBLOCK
		415	# endif
		416	# ifndef EFD_CLOEXEC
		417	# ifdef O_CLOEXEC
		418	# define EFD_CLOEXEC O_CLOEXEC
		419	# else
		420	# define EFD_CLOEXEC 02000000
		421	# endif
		422	# endif
		423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
		424	#endif
		425
		426	#if EV_USE_SIGNALFD
		427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		428	# include <stdint.h>
		429	# ifndef SFD_NONBLOCK
		430	# define SFD_NONBLOCK O_NONBLOCK
		431	# endif
		432	# ifndef SFD_CLOEXEC
		433	# ifdef O_CLOEXEC
		434	# define SFD_CLOEXEC O_CLOEXEC
		435	# else
		436	# define SFD_CLOEXEC 02000000
		437	# endif
		438	# endif
		439	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
		440
		441	struct signalfd_siginfo
		442	{
		443	uint32_t ssi_signo;
		444	char pad[128 - sizeof (uint32_t)];
		445	};
		446	#endif
		447
246	/**/	448	/**/
247		449
		450	#if EV_VERIFY >= 3
		451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
		452	#else
		453	# define EV_FREQUENT_CHECK do { } while (0)
		454	#endif
		455
248	/*	456	/*
249	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
250	* It is added to ev_rt_now when scheduling periodics
251	* to ensure progress, time-wise, even when rounding
252	* errors are against us.
253	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
254	* Better solutions welcome.
255	*/	459	*/
256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		461	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
257		462
258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261		465
262	#if __GNUC__ >= 4	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
263	# define expect(expr,value) __builtin_expect ((expr),(value))	467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
264	# define noinline __attribute__ ((noinline))	468
		469	/* the following are taken from libecb */
		470	/* ecb.h start */
		471
		472	/* many compilers define _GNUC_ to some versions but then only implement
		473	* what their idiot authors think are the "more important" extensions,
		474	* causing enourmous grief in return for some better fake benchmark numbers.
		475	* or so.
		476	* we try to detect these and simply assume they are not gcc - if they have
		477	* an issue with that they should have done it right in the first place.
		478	*/
		479	#ifndef ECB_GCC_VERSION
		480	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
		481	#define ECB_GCC_VERSION(major,minor) 0
		482	#else
		483	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		484	#endif
		485	#endif
		486
		487	#if __cplusplus
		488	#define ecb_inline static inline
		489	#elif ECB_GCC_VERSION(2,5)
		490	#define ecb_inline static __inline__
		491	#elif ECB_C99
		492	#define ecb_inline static inline
265	#else	493	#else
266	# define expect(expr,value) (expr)	494	#define ecb_inline static
267	# define noinline
268	# if __STDC_VERSION__ < 199901L
269	# define inline
270	# endif	495	#endif
		496
		497	#ifndef ECB_MEMORY_FENCE
		498	#if ECB_GCC_VERSION(2,5)
		499	#if __x86
		500	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		501	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		502	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		503	#elif __amd64
		504	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		505	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		506	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
		507	#endif
271	#endif	508	#endif
		509	#endif
272		510
		511	#ifndef ECB_MEMORY_FENCE
		512	#if ECB_GCC_VERSION(4,4)
		513	#define ECB_MEMORY_FENCE __sync_synchronize ()
		514	#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
		515	#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
		516	#elif defined(_WIN32) && defined(MemoryBarrier)
		517	#define ECB_MEMORY_FENCE MemoryBarrier ()
		518	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		519	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		520	#endif
		521	#endif
		522
		523	#ifndef ECB_MEMORY_FENCE
		524	#include <pthread.h>
		525
		526	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		527	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		528	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		529	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		530	#endif
		531
		532	#if ECB_GCC_VERSION(3,1)
		533	#define ecb_attribute(attrlist) __attribute__(attrlist)
		534	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		535	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		536	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		537	#else
		538	#define ecb_attribute(attrlist)
		539	#define ecb_is_constant(expr) 0
		540	#define ecb_expect(expr,value) (expr)
		541	#define ecb_prefetch(addr,rw,locality)
		542	#endif
		543
		544	#define ecb_noinline ecb_attribute ((__noinline__))
		545	#define ecb_noreturn ecb_attribute ((__noreturn__))
		546	#define ecb_unused ecb_attribute ((__unused__))
		547	#define ecb_const ecb_attribute ((__const__))
		548	#define ecb_pure ecb_attribute ((__pure__))
		549
		550	#if ECB_GCC_VERSION(4,3)
		551	#define ecb_artificial ecb_attribute ((__artificial__))
		552	#define ecb_hot ecb_attribute ((__hot__))
		553	#define ecb_cold ecb_attribute ((__cold__))
		554	#else
		555	#define ecb_artificial
		556	#define ecb_hot
		557	#define ecb_cold
		558	#endif
		559
		560	/* put around conditional expressions if you are very sure that the */
		561	/* expression is mostly true or mostly false. note that these return */
		562	/* booleans, not the expression. */
273	#define expect_false(expr) expect ((expr) != 0, 0)	563	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274	#define expect_true(expr) expect ((expr) != 0, 1)	564	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		565	/* ecb.h end */
		566
		567	#define expect_false(cond) ecb_expect_false (cond)
		568	#define expect_true(cond) ecb_expect_true (cond)
		569	#define noinline ecb_noinline
		570
275	#define inline_size static inline	571	#define inline_size ecb_inline
276		572
277	#if EV_MINIMAL	573	#if EV_FEATURE_CODE
		574	# define inline_speed ecb_inline
		575	#else
278	# define inline_speed static noinline	576	# define inline_speed static noinline
		577	#endif
		578
		579	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		580
		581	#if EV_MINPRI == EV_MAXPRI
		582	# define ABSPRI(w) (((W)w), 0)
279	#else	583	#else
280	# define inline_speed static inline
281	#endif
282
283	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
284	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)	584	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		585	#endif
285		586
286	#define EMPTY /* required for microsofts broken pseudo-c compiler */	587	#define EMPTY /* required for microsofts broken pseudo-c compiler */
287	#define EMPTY2(a,b) /* used to suppress some warnings */	588	#define EMPTY2(a,b) /* used to suppress some warnings */
288		589
289	typedef ev_watcher *W;	590	typedef ev_watcher *W;
290	typedef ev_watcher_list *WL;	591	typedef ev_watcher_list *WL;
291	typedef ev_watcher_time *WT;	592	typedef ev_watcher_time *WT;
292		593
		594	#define ev_active(w) ((W)(w))->active
		595	#define ev_at(w) ((WT)(w))->at
		596
		597	#if EV_USE_REALTIME
		598	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		599	/* giving it a reasonably high chance of working on typical architectures */
		600	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		601	#endif
		602
293	#if EV_USE_MONOTONIC	603	#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? */	604	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		605	#endif
		606
		607	#ifndef EV_FD_TO_WIN32_HANDLE
		608	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		609	#endif
		610	#ifndef EV_WIN32_HANDLE_TO_FD
		611	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		612	#endif
		613	#ifndef EV_WIN32_CLOSE_FD
		614	# define EV_WIN32_CLOSE_FD(fd) close (fd)
297	#endif	615	#endif
298		616
299	#ifdef _WIN32	617	#ifdef _WIN32
300	# include "ev_win32.c"	618	# include "ev_win32.c"
301	#endif	619	#endif
302		620
303	/*****************************************************************************/	621	/*****************************************************************************/
304		622
		623	/* define a suitable floor function (only used by periodics atm) */
		624
		625	#if EV_USE_FLOOR
		626	# include <math.h>
		627	# define ev_floor(v) floor (v)
		628	#else
		629
		630	#include <float.h>
		631
		632	/* a floor() replacement function, should be independent of ev_tstamp type */
		633	static ev_tstamp noinline
		634	ev_floor (ev_tstamp v)
		635	{
		636	/* the choice of shift factor is not terribly important */
		637	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		638	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		639	#else
		640	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		641	#endif
		642
		643	/* argument too large for an unsigned long? */
		644	if (expect_false (v >= shift))
		645	{
		646	ev_tstamp f;
		647
		648	if (v == v - 1.)
		649	return v; /* very large number */
		650
		651	f = shift * ev_floor (v * (1. / shift));
		652	return f + ev_floor (v - f);
		653	}
		654
		655	/* special treatment for negative args? */
		656	if (expect_false (v < 0.))
		657	{
		658	ev_tstamp f = -ev_floor (-v);
		659
		660	return f - (f == v ? 0 : 1);
		661	}
		662
		663	/* fits into an unsigned long */
		664	return (unsigned long)v;
		665	}
		666
		667	#endif
		668
		669	/*****************************************************************************/
		670
		671	#ifdef __linux
		672	# include <sys/utsname.h>
		673	#endif
		674
		675	static unsigned int noinline ecb_cold
		676	ev_linux_version (void)
		677	{
		678	#ifdef __linux
		679	unsigned int v = 0;
		680	struct utsname buf;
		681	int i;
		682	char *p = buf.release;
		683
		684	if (uname (&buf))
		685	return 0;
		686
		687	for (i = 3+1; --i; )
		688	{
		689	unsigned int c = 0;
		690
		691	for (;;)
		692	{
		693	if (*p >= '0' && *p <= '9')
		694	c = c * 10 + *p++ - '0';
		695	else
		696	{
		697	p += *p == '.';
		698	break;
		699	}
		700	}
		701
		702	v = (v << 8) | c;
		703	}
		704
		705	return v;
		706	#else
		707	return 0;
		708	#endif
		709	}
		710
		711	/*****************************************************************************/
		712
		713	#if EV_AVOID_STDIO
		714	static void noinline ecb_cold
		715	ev_printerr (const char *msg)
		716	{
		717	write (STDERR_FILENO, msg, strlen (msg));
		718	}
		719	#endif
		720
305	static void (*syserr_cb)(const char *msg);	721	static void (*syserr_cb)(const char *msg);
306		722
307	void	723	void ecb_cold
308	ev_set_syserr_cb (void (*cb)(const char *msg))	724	ev_set_syserr_cb (void (*cb)(const char *msg))
309	{	725	{
310	syserr_cb = cb;	726	syserr_cb = cb;
311	}	727	}
312		728
313	static void noinline	729	static void noinline ecb_cold
314	syserr (const char *msg)	730	ev_syserr (const char *msg)
315	{	731	{
316	if (!msg)	732	if (!msg)
317	msg = "(libev) system error";	733	msg = "(libev) system error";
318		734
319	if (syserr_cb)	735	if (syserr_cb)
320	syserr_cb (msg);	736	syserr_cb (msg);
321	else	737	else
322	{	738	{
		739	#if EV_AVOID_STDIO
		740	ev_printerr (msg);
		741	ev_printerr (": ");
		742	ev_printerr (strerror (errno));
		743	ev_printerr ("\n");
		744	#else
323	perror (msg);	745	perror (msg);
		746	#endif
324	abort ();	747	abort ();
325	}	748	}
326	}	749	}
327		750
		751	static void *
		752	ev_realloc_emul (void *ptr, long size)
		753	{
		754	#if __GLIBC__
		755	return realloc (ptr, size);
		756	#else
		757	/* some systems, notably openbsd and darwin, fail to properly
		758	* implement realloc (x, 0) (as required by both ansi c-89 and
		759	* the single unix specification, so work around them here.
		760	*/
		761
		762	if (size)
		763	return realloc (ptr, size);
		764
		765	free (ptr);
		766	return 0;
		767	#endif
		768	}
		769
328	static void *(*alloc)(void *ptr, long size);	770	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329		771
330	void	772	void ecb_cold
331	ev_set_allocator (void *(*cb)(void *ptr, long size))	773	ev_set_allocator (void *(*cb)(void *ptr, long size))
332	{	774	{
333	alloc = cb;	775	alloc = cb;
334	}	776	}
335		777
336	inline_speed void *	778	inline_speed void *
337	ev_realloc (void *ptr, long size)	779	ev_realloc (void *ptr, long size)
338	{	780	{
339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	781	ptr = alloc (ptr, size);
340		782
341	if (!ptr && size)	783	if (!ptr && size)
342	{	784	{
		785	#if EV_AVOID_STDIO
		786	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		787	#else
343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	788	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		789	#endif
344	abort ();	790	abort ();
345	}	791	}
346		792
347	return ptr;	793	return ptr;
348	}	794	}
…		…
350	#define ev_malloc(size) ev_realloc (0, (size))	796	#define ev_malloc(size) ev_realloc (0, (size))
351	#define ev_free(ptr) ev_realloc ((ptr), 0)	797	#define ev_free(ptr) ev_realloc ((ptr), 0)
352		798
353	/*****************************************************************************/	799	/*****************************************************************************/
354		800
		801	/* set in reify when reification needed */
		802	#define EV_ANFD_REIFY 1
		803
		804	/* file descriptor info structure */
355	typedef struct	805	typedef struct
356	{	806	{
357	WL head;	807	WL head;
358	unsigned char events;	808	unsigned char events; /* the events watched for */
		809	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		810	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359	unsigned char reify;	811	unsigned char unused;
		812	#if EV_USE_EPOLL
		813	unsigned int egen; /* generation counter to counter epoll bugs */
		814	#endif
360	#if EV_SELECT_IS_WINSOCKET	815	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361	SOCKET handle;	816	SOCKET handle;
362	#endif	817	#endif
		818	#if EV_USE_IOCP
		819	OVERLAPPED or, ow;
		820	#endif
363	} ANFD;	821	} ANFD;
364		822
		823	/* stores the pending event set for a given watcher */
365	typedef struct	824	typedef struct
366	{	825	{
367	W w;	826	W w;
368	int events;	827	int events; /* the pending event set for the given watcher */
369	} ANPENDING;	828	} ANPENDING;
370		829
371	#if EV_USE_INOTIFY	830	#if EV_USE_INOTIFY
		831	/* hash table entry per inotify-id */
372	typedef struct	832	typedef struct
373	{	833	{
374	WL head;	834	WL head;
375	} ANFS;	835	} ANFS;
		836	#endif
		837
		838	/* Heap Entry */
		839	#if EV_HEAP_CACHE_AT
		840	/* a heap element */
		841	typedef struct {
		842	ev_tstamp at;
		843	WT w;
		844	} ANHE;
		845
		846	#define ANHE_w(he) (he).w /* access watcher, read-write */
		847	#define ANHE_at(he) (he).at /* access cached at, read-only */
		848	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		849	#else
		850	/* a heap element */
		851	typedef WT ANHE;
		852
		853	#define ANHE_w(he) (he)
		854	#define ANHE_at(he) (he)->at
		855	#define ANHE_at_cache(he)
376	#endif	856	#endif
377		857
378	#if EV_MULTIPLICITY	858	#if EV_MULTIPLICITY
379		859
380	struct ev_loop	860	struct ev_loop
…		…
399		879
400	static int ev_default_loop_ptr;	880	static int ev_default_loop_ptr;
401		881
402	#endif	882	#endif
403		883
		884	#if EV_FEATURE_API
		885	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		886	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		887	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		888	#else
		889	# define EV_RELEASE_CB (void)0
		890	# define EV_ACQUIRE_CB (void)0
		891	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		892	#endif
		893
		894	#define EVBREAK_RECURSE 0x80
		895
404	/*****************************************************************************/	896	/*****************************************************************************/
405		897
		898	#ifndef EV_HAVE_EV_TIME
406	ev_tstamp	899	ev_tstamp
407	ev_time (void)	900	ev_time (void)
408	{	901	{
409	#if EV_USE_REALTIME	902	#if EV_USE_REALTIME
		903	if (expect_true (have_realtime))
		904	{
410	struct timespec ts;	905	struct timespec ts;
411	clock_gettime (CLOCK_REALTIME, &ts);	906	clock_gettime (CLOCK_REALTIME, &ts);
412	return ts.tv_sec + ts.tv_nsec * 1e-9;	907	return ts.tv_sec + ts.tv_nsec * 1e-9;
413	#else	908	}
		909	#endif
		910
414	struct timeval tv;	911	struct timeval tv;
415	gettimeofday (&tv, 0);	912	gettimeofday (&tv, 0);
416	return tv.tv_sec + tv.tv_usec * 1e-6;	913	return tv.tv_sec + tv.tv_usec * 1e-6;
417	#endif
418	}	914	}
		915	#endif
419		916
420	ev_tstamp inline_size	917	inline_size ev_tstamp
421	get_clock (void)	918	get_clock (void)
422	{	919	{
423	#if EV_USE_MONOTONIC	920	#if EV_USE_MONOTONIC
424	if (expect_true (have_monotonic))	921	if (expect_true (have_monotonic))
425	{	922	{
…		…
446	if (delay > 0.)	943	if (delay > 0.)
447	{	944	{
448	#if EV_USE_NANOSLEEP	945	#if EV_USE_NANOSLEEP
449	struct timespec ts;	946	struct timespec ts;
450		947
451	ts.tv_sec = (time_t)delay;	948	EV_TS_SET (ts, delay);
452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454	nanosleep (&ts, 0);	949	nanosleep (&ts, 0);
455	#elif defined(_WIN32)	950	#elif defined(_WIN32)
456	Sleep (delay * 1e3);	951	Sleep ((unsigned long)(delay * 1e3));
457	#else	952	#else
458	struct timeval tv;	953	struct timeval tv;
459		954
460	tv.tv_sec = (time_t)delay;	955	/* 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);	956	/* something not guaranteed by newer posix versions, but guaranteed */
462		957	/* by older ones */
		958	EV_TV_SET (tv, delay);
463	select (0, 0, 0, 0, &tv);	959	select (0, 0, 0, 0, &tv);
464	#endif	960	#endif
465	}	961	}
466	}	962	}
467		963
468	/*****************************************************************************/	964	/*****************************************************************************/
469		965
470	int inline_size	966	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		967
		968	/* find a suitable new size for the given array, */
		969	/* hopefully by rounding to a nice-to-malloc size */
		970	inline_size int
471	array_nextsize (int elem, int cur, int cnt)	971	array_nextsize (int elem, int cur, int cnt)
472	{	972	{
473	int ncur = cur + 1;	973	int ncur = cur + 1;
474		974
475	do	975	do
476	ncur <<= 1;	976	ncur <<= 1;
477	while (cnt > ncur);	977	while (cnt > ncur);
478		978
479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	979	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480	if (elem * ncur > 4096)	980	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481	{	981	{
482	ncur *= elem;	982	ncur *= elem;
483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	983	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484	ncur = ncur - sizeof (void *) * 4;	984	ncur = ncur - sizeof (void *) * 4;
485	ncur /= elem;	985	ncur /= elem;
486	}	986	}
487		987
488	return ncur;	988	return ncur;
489	}	989	}
490		990
491	static noinline void *	991	static void * noinline ecb_cold
492	array_realloc (int elem, void *base, int *cur, int cnt)	992	array_realloc (int elem, void *base, int *cur, int cnt)
493	{	993	{
494	*cur = array_nextsize (elem, *cur, cnt);	994	*cur = array_nextsize (elem, *cur, cnt);
495	return ev_realloc (base, elem * *cur);	995	return ev_realloc (base, elem * *cur);
496	}	996	}
		997
		998	#define array_init_zero(base,count) \
		999	memset ((void *)(base), 0, sizeof (*(base)) * (count))
497		1000
498	#define array_needsize(type,base,cur,cnt,init) \	1001	#define array_needsize(type,base,cur,cnt,init) \
499	if (expect_false ((cnt) > (cur))) \	1002	if (expect_false ((cnt) > (cur))) \
500	{ \	1003	{ \
501	int ocur_ = (cur); \	1004	int ecb_unused ocur_ = (cur); \
502	(base) = (type *)array_realloc \	1005	(base) = (type *)array_realloc \
503	(sizeof (type), (base), &(cur), (cnt)); \	1006	(sizeof (type), (base), &(cur), (cnt)); \
504	init ((base) + (ocur_), (cur) - ocur_); \	1007	init ((base) + (ocur_), (cur) - ocur_); \
505	}	1008	}
506		1009
…		…
513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	1016	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514	}	1017	}
515	#endif	1018	#endif
516		1019
517	#define array_free(stem, idx) \	1020	#define array_free(stem, idx) \
518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	1021	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519		1022
520	/*****************************************************************************/	1023	/*****************************************************************************/
		1024
		1025	/* dummy callback for pending events */
		1026	static void noinline
		1027	pendingcb (EV_P_ ev_prepare *w, int revents)
		1028	{
		1029	}
521		1030
522	void noinline	1031	void noinline
523	ev_feed_event (EV_P_ void *w, int revents)	1032	ev_feed_event (EV_P_ void *w, int revents)
524	{	1033	{
525	W w_ = (W)w;	1034	W w_ = (W)w;
…		…
534	pendings [pri][w_->pending - 1].w = w_;	1043	pendings [pri][w_->pending - 1].w = w_;
535	pendings [pri][w_->pending - 1].events = revents;	1044	pendings [pri][w_->pending - 1].events = revents;
536	}	1045	}
537	}	1046	}
538		1047
539	void inline_speed	1048	inline_speed void
		1049	feed_reverse (EV_P_ W w)
		1050	{
		1051	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		1052	rfeeds [rfeedcnt++] = w;
		1053	}
		1054
		1055	inline_size void
		1056	feed_reverse_done (EV_P_ int revents)
		1057	{
		1058	do
		1059	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		1060	while (rfeedcnt);
		1061	}
		1062
		1063	inline_speed void
540	queue_events (EV_P_ W *events, int eventcnt, int type)	1064	queue_events (EV_P_ W *events, int eventcnt, int type)
541	{	1065	{
542	int i;	1066	int i;
543		1067
544	for (i = 0; i < eventcnt; ++i)	1068	for (i = 0; i < eventcnt; ++i)
545	ev_feed_event (EV_A_ events [i], type);	1069	ev_feed_event (EV_A_ events [i], type);
546	}	1070	}
547		1071
548	/*****************************************************************************/	1072	/*****************************************************************************/
549		1073
550	void inline_size	1074	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)	1075	fd_event_nocheck (EV_P_ int fd, int revents)
565	{	1076	{
566	ANFD *anfd = anfds + fd;	1077	ANFD *anfd = anfds + fd;
567	ev_io *w;	1078	ev_io *w;
568		1079
569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1080	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
573	if (ev)	1084	if (ev)
574	ev_feed_event (EV_A_ (W)w, ev);	1085	ev_feed_event (EV_A_ (W)w, ev);
575	}	1086	}
576	}	1087	}
577		1088
		1089	/* do not submit kernel events for fds that have reify set */
		1090	/* because that means they changed while we were polling for new events */
		1091	inline_speed void
		1092	fd_event (EV_P_ int fd, int revents)
		1093	{
		1094	ANFD *anfd = anfds + fd;
		1095
		1096	if (expect_true (!anfd->reify))
		1097	fd_event_nocheck (EV_A_ fd, revents);
		1098	}
		1099
578	void	1100	void
579	ev_feed_fd_event (EV_P_ int fd, int revents)	1101	ev_feed_fd_event (EV_P_ int fd, int revents)
580	{	1102	{
581	if (fd >= 0 && fd < anfdmax)	1103	if (fd >= 0 && fd < anfdmax)
582	fd_event (EV_A_ fd, revents);	1104	fd_event_nocheck (EV_A_ fd, revents);
583	}	1105	}
584		1106
585	void inline_size	1107	/* make sure the external fd watch events are in-sync */
		1108	/* with the kernel/libev internal state */
		1109	inline_size void
586	fd_reify (EV_P)	1110	fd_reify (EV_P)
587	{	1111	{
588	int i;	1112	int i;
		1113
		1114	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1115	for (i = 0; i < fdchangecnt; ++i)
		1116	{
		1117	int fd = fdchanges [i];
		1118	ANFD *anfd = anfds + fd;
		1119
		1120	if (anfd->reify & EV__IOFDSET && anfd->head)
		1121	{
		1122	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1123
		1124	if (handle != anfd->handle)
		1125	{
		1126	unsigned long arg;
		1127
		1128	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1129
		1130	/* handle changed, but fd didn't - we need to do it in two steps */
		1131	backend_modify (EV_A_ fd, anfd->events, 0);
		1132	anfd->events = 0;
		1133	anfd->handle = handle;
		1134	}
		1135	}
		1136	}
		1137	#endif
589		1138
590	for (i = 0; i < fdchangecnt; ++i)	1139	for (i = 0; i < fdchangecnt; ++i)
591	{	1140	{
592	int fd = fdchanges [i];	1141	int fd = fdchanges [i];
593	ANFD *anfd = anfds + fd;	1142	ANFD *anfd = anfds + fd;
594	ev_io *w;	1143	ev_io *w;
595		1144
596	unsigned char events = 0;	1145	unsigned char o_events = anfd->events;
		1146	unsigned char o_reify = anfd->reify;
597		1147
598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1148	anfd->reify = 0;
599	events |= (unsigned char)w->events;
600		1149
601	#if EV_SELECT_IS_WINSOCKET	1150	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602	if (events)
603	{	1151	{
604	unsigned long argp;	1152	anfd->events = 0;
605	#ifdef EV_FD_TO_WIN32_HANDLE	1153
606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1154	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
607	#else	1155	anfd->events |= (unsigned char)w->events;
608	anfd->handle = _get_osfhandle (fd);	1156
609	#endif	1157	if (o_events != anfd->events)
610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	1158	o_reify = EV__IOFDSET; /* actually |= */
611	}	1159	}
612	#endif
613		1160
614	{	1161	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);	1162	backend_modify (EV_A_ fd, o_events, anfd->events);
623	}
624	}	1163	}
625		1164
626	fdchangecnt = 0;	1165	fdchangecnt = 0;
627	}	1166	}
628		1167
629	void inline_size	1168	/* something about the given fd changed */
		1169	inline_size void
630	fd_change (EV_P_ int fd, int flags)	1170	fd_change (EV_P_ int fd, int flags)
631	{	1171	{
632	unsigned char reify = anfds [fd].reify;	1172	unsigned char reify = anfds [fd].reify;
633	anfds [fd].reify |= flags;	1173	anfds [fd].reify |= flags;
634		1174
…		…
638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	1178	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639	fdchanges [fdchangecnt - 1] = fd;	1179	fdchanges [fdchangecnt - 1] = fd;
640	}	1180	}
641	}	1181	}
642		1182
643	void inline_speed	1183	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		1184	inline_speed void ecb_cold
644	fd_kill (EV_P_ int fd)	1185	fd_kill (EV_P_ int fd)
645	{	1186	{
646	ev_io *w;	1187	ev_io *w;
647		1188
648	while ((w = (ev_io *)anfds [fd].head))	1189	while ((w = (ev_io *)anfds [fd].head))
…		…
650	ev_io_stop (EV_A_ w);	1191	ev_io_stop (EV_A_ w);
651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1192	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652	}	1193	}
653	}	1194	}
654		1195
655	int inline_size	1196	/* check whether the given fd is actually valid, for error recovery */
		1197	inline_size int ecb_cold
656	fd_valid (int fd)	1198	fd_valid (int fd)
657	{	1199	{
658	#ifdef _WIN32	1200	#ifdef _WIN32
659	return _get_osfhandle (fd) != -1;	1201	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660	#else	1202	#else
661	return fcntl (fd, F_GETFD) != -1;	1203	return fcntl (fd, F_GETFD) != -1;
662	#endif	1204	#endif
663	}	1205	}
664		1206
665	/* called on EBADF to verify fds */	1207	/* called on EBADF to verify fds */
666	static void noinline	1208	static void noinline ecb_cold
667	fd_ebadf (EV_P)	1209	fd_ebadf (EV_P)
668	{	1210	{
669	int fd;	1211	int fd;
670		1212
671	for (fd = 0; fd < anfdmax; ++fd)	1213	for (fd = 0; fd < anfdmax; ++fd)
672	if (anfds [fd].events)	1214	if (anfds [fd].events)
673	if (!fd_valid (fd) == -1 && errno == EBADF)	1215	if (!fd_valid (fd) && errno == EBADF)
674	fd_kill (EV_A_ fd);	1216	fd_kill (EV_A_ fd);
675	}	1217	}
676		1218
677	/* called on ENOMEM in select/poll to kill some fds and retry */	1219	/* called on ENOMEM in select/poll to kill some fds and retry */
678	static void noinline	1220	static void noinline ecb_cold
679	fd_enomem (EV_P)	1221	fd_enomem (EV_P)
680	{	1222	{
681	int fd;	1223	int fd;
682		1224
683	for (fd = anfdmax; fd--; )	1225	for (fd = anfdmax; fd--; )
684	if (anfds [fd].events)	1226	if (anfds [fd].events)
685	{	1227	{
686	fd_kill (EV_A_ fd);	1228	fd_kill (EV_A_ fd);
687	return;	1229	break;
688	}	1230	}
689	}	1231	}
690		1232
691	/* usually called after fork if backend needs to re-arm all fds from scratch */	1233	/* usually called after fork if backend needs to re-arm all fds from scratch */
692	static void noinline	1234	static void noinline
…		…
696		1238
697	for (fd = 0; fd < anfdmax; ++fd)	1239	for (fd = 0; fd < anfdmax; ++fd)
698	if (anfds [fd].events)	1240	if (anfds [fd].events)
699	{	1241	{
700	anfds [fd].events = 0;	1242	anfds [fd].events = 0;
		1243	anfds [fd].emask = 0;
701	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1244	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702	}	1245	}
703	}	1246	}
704		1247
705	/*****************************************************************************/	1248	/* used to prepare libev internal fd's */
706		1249	/* this is not fork-safe */
707	void inline_speed	1250	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)	1251	fd_intern (int fd)
792	{	1252	{
793	#ifdef _WIN32	1253	#ifdef _WIN32
794	int arg = 1;	1254	unsigned long arg = 1;
795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1255	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796	#else	1256	#else
797	fcntl (fd, F_SETFD, FD_CLOEXEC);	1257	fcntl (fd, F_SETFD, FD_CLOEXEC);
798	fcntl (fd, F_SETFL, O_NONBLOCK);	1258	fcntl (fd, F_SETFL, O_NONBLOCK);
799	#endif	1259	#endif
800	}	1260	}
801		1261
		1262	/*****************************************************************************/
		1263
		1264	/*
		1265	* the heap functions want a real array index. array index 0 is guaranteed to not
		1266	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1267	* the branching factor of the d-tree.
		1268	*/
		1269
		1270	/*
		1271	* at the moment we allow libev the luxury of two heaps,
		1272	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1273	* which is more cache-efficient.
		1274	* the difference is about 5% with 50000+ watchers.
		1275	*/
		1276	#if EV_USE_4HEAP
		1277
		1278	#define DHEAP 4
		1279	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1280	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1281	#define UPHEAP_DONE(p,k) ((p) == (k))
		1282
		1283	/* away from the root */
		1284	inline_speed void
		1285	downheap (ANHE *heap, int N, int k)
		1286	{
		1287	ANHE he = heap [k];
		1288	ANHE *E = heap + N + HEAP0;
		1289
		1290	for (;;)
		1291	{
		1292	ev_tstamp minat;
		1293	ANHE *minpos;
		1294	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1295
		1296	/* find minimum child */
		1297	if (expect_true (pos + DHEAP - 1 < E))
		1298	{
		1299	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1300	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1301	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1302	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1303	}
		1304	else if (pos < E)
		1305	{
		1306	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1307	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1308	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1309	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1310	}
		1311	else
		1312	break;
		1313
		1314	if (ANHE_at (he) <= minat)
		1315	break;
		1316
		1317	heap [k] = *minpos;
		1318	ev_active (ANHE_w (*minpos)) = k;
		1319
		1320	k = minpos - heap;
		1321	}
		1322
		1323	heap [k] = he;
		1324	ev_active (ANHE_w (he)) = k;
		1325	}
		1326
		1327	#else /* 4HEAP */
		1328
		1329	#define HEAP0 1
		1330	#define HPARENT(k) ((k) >> 1)
		1331	#define UPHEAP_DONE(p,k) (!(p))
		1332
		1333	/* away from the root */
		1334	inline_speed void
		1335	downheap (ANHE *heap, int N, int k)
		1336	{
		1337	ANHE he = heap [k];
		1338
		1339	for (;;)
		1340	{
		1341	int c = k << 1;
		1342
		1343	if (c >= N + HEAP0)
		1344	break;
		1345
		1346	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1347	? 1 : 0;
		1348
		1349	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1350	break;
		1351
		1352	heap [k] = heap [c];
		1353	ev_active (ANHE_w (heap [k])) = k;
		1354
		1355	k = c;
		1356	}
		1357
		1358	heap [k] = he;
		1359	ev_active (ANHE_w (he)) = k;
		1360	}
		1361	#endif
		1362
		1363	/* towards the root */
		1364	inline_speed void
		1365	upheap (ANHE *heap, int k)
		1366	{
		1367	ANHE he = heap [k];
		1368
		1369	for (;;)
		1370	{
		1371	int p = HPARENT (k);
		1372
		1373	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1374	break;
		1375
		1376	heap [k] = heap [p];
		1377	ev_active (ANHE_w (heap [k])) = k;
		1378	k = p;
		1379	}
		1380
		1381	heap [k] = he;
		1382	ev_active (ANHE_w (he)) = k;
		1383	}
		1384
		1385	/* move an element suitably so it is in a correct place */
		1386	inline_size void
		1387	adjustheap (ANHE *heap, int N, int k)
		1388	{
		1389	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
		1390	upheap (heap, k);
		1391	else
		1392	downheap (heap, N, k);
		1393	}
		1394
		1395	/* rebuild the heap: this function is used only once and executed rarely */
		1396	inline_size void
		1397	reheap (ANHE *heap, int N)
		1398	{
		1399	int i;
		1400
		1401	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1402	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1403	for (i = 0; i < N; ++i)
		1404	upheap (heap, i + HEAP0);
		1405	}
		1406
		1407	/*****************************************************************************/
		1408
		1409	/* associate signal watchers to a signal signal */
		1410	typedef struct
		1411	{
		1412	EV_ATOMIC_T pending;
		1413	#if EV_MULTIPLICITY
		1414	EV_P;
		1415	#endif
		1416	WL head;
		1417	} ANSIG;
		1418
		1419	static ANSIG signals [EV_NSIG - 1];
		1420
		1421	/*****************************************************************************/
		1422
		1423	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		1424
802	static void noinline	1425	static void noinline ecb_cold
803	evpipe_init (EV_P)	1426	evpipe_init (EV_P)
804	{	1427	{
805	if (!ev_is_active (&pipeev))	1428	if (!ev_is_active (&pipe_w))
806	{	1429	{
		1430	# if EV_USE_EVENTFD
		1431	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1432	if (evfd < 0 && errno == EINVAL)
		1433	evfd = eventfd (0, 0);
		1434
		1435	if (evfd >= 0)
		1436	{
		1437	evpipe [0] = -1;
		1438	fd_intern (evfd); /* doing it twice doesn't hurt */
		1439	ev_io_set (&pipe_w, evfd, EV_READ);
		1440	}
		1441	else
		1442	# endif
		1443	{
807	while (pipe (evpipe))	1444	while (pipe (evpipe))
808	syserr ("(libev) error creating signal/async pipe");	1445	ev_syserr ("(libev) error creating signal/async pipe");
809		1446
810	fd_intern (evpipe [0]);	1447	fd_intern (evpipe [0]);
811	fd_intern (evpipe [1]);	1448	fd_intern (evpipe [1]);
812
813	ev_io_set (&pipeev, evpipe [0], EV_READ);	1449	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1450	}
		1451
814	ev_io_start (EV_A_ &pipeev);	1452	ev_io_start (EV_A_ &pipe_w);
815	ev_unref (EV_A); /* child watcher should not keep loop alive */	1453	ev_unref (EV_A); /* watcher should not keep loop alive */
816	}
817	}
818
819	void inline_size
820	evpipe_write (EV_P_ int sig, int async)
821	{
822	if (!(gotasync || gotsig))
823	{	1454	}
		1455	}
		1456
		1457	inline_speed void
		1458	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1459	{
		1460	if (expect_true (*flag))
		1461	return;
		1462
		1463	*flag = 1;
		1464
		1465	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		1466
		1467	pipe_write_skipped = 1;
		1468
		1469	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		1470
		1471	if (pipe_write_wanted)
		1472	{
824	int old_errno = errno;	1473	int old_errno;
825		1474
826	if (sig) gotsig = 1;	1475	pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
827	if (async) gotasync = 1;
828		1476
829	write (evpipe [1], &old_errno, 1);	1477	old_errno = errno; /* save errno because write will clobber it */
		1478
		1479	#if EV_USE_EVENTFD
		1480	if (evfd >= 0)
		1481	{
		1482	uint64_t counter = 1;
		1483	write (evfd, &counter, sizeof (uint64_t));
		1484	}
		1485	else
		1486	#endif
		1487	{
		1488	/* win32 people keep sending patches that change this write() to send() */
		1489	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1490	/* so when you think this write should be a send instead, please find out */
		1491	/* where your send() is from - it's definitely not the microsoft send, and */
		1492	/* tell me. thank you. */
		1493	write (evpipe [1], &(evpipe [1]), 1);
		1494	}
		1495
830	errno = old_errno;	1496	errno = old_errno;
831	}	1497	}
832	}	1498	}
833		1499
		1500	/* called whenever the libev signal pipe */
		1501	/* got some events (signal, async) */
834	static void	1502	static void
835	pipecb (EV_P_ ev_io *iow, int revents)	1503	pipecb (EV_P_ ev_io *iow, int revents)
836	{	1504	{
		1505	int i;
		1506
		1507	if (revents & EV_READ)
837	{	1508	{
838	int dummy;	1509	#if EV_USE_EVENTFD
		1510	if (evfd >= 0)
		1511	{
		1512	uint64_t counter;
		1513	read (evfd, &counter, sizeof (uint64_t));
		1514	}
		1515	else
		1516	#endif
		1517	{
		1518	char dummy;
		1519	/* see discussion in evpipe_write when you think this read should be recv in win32 */
839	read (evpipe [0], &dummy, 1);	1520	read (evpipe [0], &dummy, 1);
		1521	}
840	}	1522	}
841		1523
842	if (gotsig)	1524	pipe_write_skipped = 0;
843	{
844	int signum;
845	gotsig = 0;
846		1525
847	for (signum = signalmax; signum--; )	1526	#if EV_SIGNAL_ENABLE
848	if (signals [signum].gotsig)	1527	if (sig_pending)
		1528	{
		1529	sig_pending = 0;
		1530
		1531	for (i = EV_NSIG - 1; i--; )
		1532	if (expect_false (signals [i].pending))
849	ev_feed_signal_event (EV_A_ signum + 1);	1533	ev_feed_signal_event (EV_A_ i + 1);
850	}
851
852	if (gotasync)
853	{	1534	}
854	int i;	1535	#endif
855	gotasync = 0;	1536
		1537	#if EV_ASYNC_ENABLE
		1538	if (async_pending)
		1539	{
		1540	async_pending = 0;
856		1541
857	for (i = asynccnt; i--; )	1542	for (i = asynccnt; i--; )
858	if (asyncs [i]->sent)	1543	if (asyncs [i]->sent)
859	{	1544	{
860	asyncs [i]->sent = 0;	1545	asyncs [i]->sent = 0;
861	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);	1546	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
862	}	1547	}
863	}	1548	}
		1549	#endif
864	}	1550	}
865		1551
866	/*****************************************************************************/	1552	/*****************************************************************************/
867		1553
		1554	void
		1555	ev_feed_signal (int signum)
		1556	{
		1557	#if EV_MULTIPLICITY
		1558	EV_P = signals [signum - 1].loop;
		1559
		1560	if (!EV_A)
		1561	return;
		1562	#endif
		1563
		1564	if (!ev_active (&pipe_w))
		1565	return;
		1566
		1567	signals [signum - 1].pending = 1;
		1568	evpipe_write (EV_A_ &sig_pending);
		1569	}
		1570
868	static void	1571	static void
869	sighandler (int signum)	1572	ev_sighandler (int signum)
870	{	1573	{
871	#if EV_MULTIPLICITY
872	struct ev_loop *loop = &default_loop_struct;
873	#endif
874
875	#if _WIN32	1574	#ifdef _WIN32
876	signal (signum, sighandler);	1575	signal (signum, ev_sighandler);
877	#endif	1576	#endif
878		1577
879	signals [signum - 1].gotsig = 1;	1578	ev_feed_signal (signum);
880	evpipe_write (EV_A_ 1, 0);
881	}	1579	}
882		1580
883	void noinline	1581	void noinline
884	ev_feed_signal_event (EV_P_ int signum)	1582	ev_feed_signal_event (EV_P_ int signum)
885	{	1583	{
886	WL w;	1584	WL w;
887		1585
		1586	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1587	return;
		1588
		1589	--signum;
		1590
888	#if EV_MULTIPLICITY	1591	#if EV_MULTIPLICITY
889	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1592	/* it is permissible to try to feed a signal to the wrong loop */
890	#endif	1593	/* or, likely more useful, feeding a signal nobody is waiting for */
891		1594
892	--signum;	1595	if (expect_false (signals [signum].loop != EV_A))
893
894	if (signum < 0 || signum >= signalmax)
895	return;	1596	return;
		1597	#endif
896		1598
897	signals [signum].gotsig = 0;	1599	signals [signum].pending = 0;
898		1600
899	for (w = signals [signum].head; w; w = w->next)	1601	for (w = signals [signum].head; w; w = w->next)
900	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1602	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
901	}	1603	}
902		1604
		1605	#if EV_USE_SIGNALFD
		1606	static void
		1607	sigfdcb (EV_P_ ev_io *iow, int revents)
		1608	{
		1609	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1610
		1611	for (;;)
		1612	{
		1613	ssize_t res = read (sigfd, si, sizeof (si));
		1614
		1615	/* not ISO-C, as res might be -1, but works with SuS */
		1616	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1617	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1618
		1619	if (res < (ssize_t)sizeof (si))
		1620	break;
		1621	}
		1622	}
		1623	#endif
		1624
		1625	#endif
		1626
903	/*****************************************************************************/	1627	/*****************************************************************************/
904		1628
		1629	#if EV_CHILD_ENABLE
905	static WL childs [EV_PID_HASHSIZE];	1630	static WL childs [EV_PID_HASHSIZE];
906
907	#ifndef _WIN32
908		1631
909	static ev_signal childev;	1632	static ev_signal childev;
910		1633
911	#ifndef WIFCONTINUED	1634	#ifndef WIFCONTINUED
912	# define WIFCONTINUED(status) 0	1635	# define WIFCONTINUED(status) 0
913	#endif	1636	#endif
914		1637
915	void inline_speed	1638	/* handle a single child status event */
		1639	inline_speed void
916	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1640	child_reap (EV_P_ int chain, int pid, int status)
917	{	1641	{
918	ev_child *w;	1642	ev_child *w;
919	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1643	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
920		1644
921	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1645	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
922	{	1646	{
923	if ((w->pid == pid || !w->pid)	1647	if ((w->pid == pid || !w->pid)
924	&& (!traced || (w->flags & 1)))	1648	&& (!traced || (w->flags & 1)))
925	{	1649	{
926	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1650	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
927	w->rpid = pid;	1651	w->rpid = pid;
928	w->rstatus = status;	1652	w->rstatus = status;
929	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1653	ev_feed_event (EV_A_ (W)w, EV_CHILD);
930	}	1654	}
931	}	1655	}
…		…
933		1657
934	#ifndef WCONTINUED	1658	#ifndef WCONTINUED
935	# define WCONTINUED 0	1659	# define WCONTINUED 0
936	#endif	1660	#endif
937		1661
		1662	/* called on sigchld etc., calls waitpid */
938	static void	1663	static void
939	childcb (EV_P_ ev_signal *sw, int revents)	1664	childcb (EV_P_ ev_signal *sw, int revents)
940	{	1665	{
941	int pid, status;	1666	int pid, status;
942		1667
…		…
945	if (!WCONTINUED	1670	if (!WCONTINUED
946	|| errno != EINVAL	1671	|| errno != EINVAL
947	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1672	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
948	return;	1673	return;
949		1674
950	/* make sure we are called again until all childs have been reaped */	1675	/* make sure we are called again until all children have been reaped */
951	/* we need to do it this way so that the callback gets called before we continue */	1676	/* we need to do it this way so that the callback gets called before we continue */
952	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	1677	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
953		1678
954	child_reap (EV_A_ sw, pid, pid, status);	1679	child_reap (EV_A_ pid, pid, status);
955	if (EV_PID_HASHSIZE > 1)	1680	if ((EV_PID_HASHSIZE) > 1)
956	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	1681	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
957	}	1682	}
958		1683
959	#endif	1684	#endif
960		1685
961	/*****************************************************************************/	1686	/*****************************************************************************/
962		1687
		1688	#if EV_USE_IOCP
		1689	# include "ev_iocp.c"
		1690	#endif
963	#if EV_USE_PORT	1691	#if EV_USE_PORT
964	# include "ev_port.c"	1692	# include "ev_port.c"
965	#endif	1693	#endif
966	#if EV_USE_KQUEUE	1694	#if EV_USE_KQUEUE
967	# include "ev_kqueue.c"	1695	# include "ev_kqueue.c"
…		…
974	#endif	1702	#endif
975	#if EV_USE_SELECT	1703	#if EV_USE_SELECT
976	# include "ev_select.c"	1704	# include "ev_select.c"
977	#endif	1705	#endif
978		1706
979	int	1707	int ecb_cold
980	ev_version_major (void)	1708	ev_version_major (void)
981	{	1709	{
982	return EV_VERSION_MAJOR;	1710	return EV_VERSION_MAJOR;
983	}	1711	}
984		1712
985	int	1713	int ecb_cold
986	ev_version_minor (void)	1714	ev_version_minor (void)
987	{	1715	{
988	return EV_VERSION_MINOR;	1716	return EV_VERSION_MINOR;
989	}	1717	}
990		1718
991	/* return true if we are running with elevated privileges and should ignore env variables */	1719	/* return true if we are running with elevated privileges and should ignore env variables */
992	int inline_size	1720	int inline_size ecb_cold
993	enable_secure (void)	1721	enable_secure (void)
994	{	1722	{
995	#ifdef _WIN32	1723	#ifdef _WIN32
996	return 0;	1724	return 0;
997	#else	1725	#else
998	return getuid () != geteuid ()	1726	return getuid () != geteuid ()
999	|| getgid () != getegid ();	1727	|| getgid () != getegid ();
1000	#endif	1728	#endif
1001	}	1729	}
1002		1730
1003	unsigned int	1731	unsigned int ecb_cold
1004	ev_supported_backends (void)	1732	ev_supported_backends (void)
1005	{	1733	{
1006	unsigned int flags = 0;	1734	unsigned int flags = 0;
1007		1735
1008	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1736	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
1012	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1740	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1013		1741
1014	return flags;	1742	return flags;
1015	}	1743	}
1016		1744
1017	unsigned int	1745	unsigned int ecb_cold
1018	ev_recommended_backends (void)	1746	ev_recommended_backends (void)
1019	{	1747	{
1020	unsigned int flags = ev_supported_backends ();	1748	unsigned int flags = ev_supported_backends ();
1021		1749
1022	#ifndef __NetBSD__	1750	#ifndef __NetBSD__
1023	/* kqueue is borked on everything but netbsd apparently */	1751	/* kqueue is borked on everything but netbsd apparently */
1024	/* it usually doesn't work correctly on anything but sockets and pipes */	1752	/* it usually doesn't work correctly on anything but sockets and pipes */
1025	flags &= ~EVBACKEND_KQUEUE;	1753	flags &= ~EVBACKEND_KQUEUE;
1026	#endif	1754	#endif
1027	#ifdef __APPLE__	1755	#ifdef __APPLE__
1028	// flags &= ~EVBACKEND_KQUEUE; for documentation	1756	/* only select works correctly on that "unix-certified" platform */
1029	flags &= ~EVBACKEND_POLL;	1757	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1758	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		1759	#endif
		1760	#ifdef __FreeBSD__
		1761	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1030	#endif	1762	#endif
1031		1763
1032	return flags;	1764	return flags;
1033	}	1765	}
1034		1766
1035	unsigned int	1767	unsigned int ecb_cold
1036	ev_embeddable_backends (void)	1768	ev_embeddable_backends (void)
1037	{	1769	{
1038	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1770	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1039		1771
1040	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1772	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1041	/* please fix it and tell me how to detect the fix */	1773	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1042	flags &= ~EVBACKEND_EPOLL;	1774	flags &= ~EVBACKEND_EPOLL;
1043		1775
1044	return flags;	1776	return flags;
1045	}	1777	}
1046		1778
1047	unsigned int	1779	unsigned int
1048	ev_backend (EV_P)	1780	ev_backend (EV_P)
1049	{	1781	{
1050	return backend;	1782	return backend;
1051	}	1783	}
1052		1784
		1785	#if EV_FEATURE_API
1053	unsigned int	1786	unsigned int
1054	ev_loop_count (EV_P)	1787	ev_iteration (EV_P)
1055	{	1788	{
1056	return loop_count;	1789	return loop_count;
		1790	}
		1791
		1792	unsigned int
		1793	ev_depth (EV_P)
		1794	{
		1795	return loop_depth;
1057	}	1796	}
1058		1797
1059	void	1798	void
1060	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1799	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1061	{	1800	{
…		…
1066	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1805	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1067	{	1806	{
1068	timeout_blocktime = interval;	1807	timeout_blocktime = interval;
1069	}	1808	}
1070		1809
		1810	void
		1811	ev_set_userdata (EV_P_ void *data)
		1812	{
		1813	userdata = data;
		1814	}
		1815
		1816	void *
		1817	ev_userdata (EV_P)
		1818	{
		1819	return userdata;
		1820	}
		1821
		1822	void
		1823	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1824	{
		1825	invoke_cb = invoke_pending_cb;
		1826	}
		1827
		1828	void
		1829	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1830	{
		1831	release_cb = release;
		1832	acquire_cb = acquire;
		1833	}
		1834	#endif
		1835
		1836	/* initialise a loop structure, must be zero-initialised */
1071	static void noinline	1837	static void noinline ecb_cold
1072	loop_init (EV_P_ unsigned int flags)	1838	loop_init (EV_P_ unsigned int flags)
1073	{	1839	{
1074	if (!backend)	1840	if (!backend)
1075	{	1841	{
		1842	origflags = flags;
		1843
		1844	#if EV_USE_REALTIME
		1845	if (!have_realtime)
		1846	{
		1847	struct timespec ts;
		1848
		1849	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1850	have_realtime = 1;
		1851	}
		1852	#endif
		1853
1076	#if EV_USE_MONOTONIC	1854	#if EV_USE_MONOTONIC
		1855	if (!have_monotonic)
1077	{	1856	{
1078	struct timespec ts;	1857	struct timespec ts;
		1858
1079	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1859	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1080	have_monotonic = 1;	1860	have_monotonic = 1;
1081	}	1861	}
1082	#endif	1862	#endif
1083
1084	ev_rt_now = ev_time ();
1085	mn_now = get_clock ();
1086	now_floor = mn_now;
1087	rtmn_diff = ev_rt_now - mn_now;
1088
1089	io_blocktime = 0.;
1090	timeout_blocktime = 0.;
1091		1863
1092	/* pid check not overridable via env */	1864	/* pid check not overridable via env */
1093	#ifndef _WIN32	1865	#ifndef _WIN32
1094	if (flags & EVFLAG_FORKCHECK)	1866	if (flags & EVFLAG_FORKCHECK)
1095	curpid = getpid ();	1867	curpid = getpid ();
…		…
1098	if (!(flags & EVFLAG_NOENV)	1870	if (!(flags & EVFLAG_NOENV)
1099	&& !enable_secure ()	1871	&& !enable_secure ()
1100	&& getenv ("LIBEV_FLAGS"))	1872	&& getenv ("LIBEV_FLAGS"))
1101	flags = atoi (getenv ("LIBEV_FLAGS"));	1873	flags = atoi (getenv ("LIBEV_FLAGS"));
1102		1874
1103	if (!(flags & 0x0000ffffUL))	1875	ev_rt_now = ev_time ();
		1876	mn_now = get_clock ();
		1877	now_floor = mn_now;
		1878	rtmn_diff = ev_rt_now - mn_now;
		1879	#if EV_FEATURE_API
		1880	invoke_cb = ev_invoke_pending;
		1881	#endif
		1882
		1883	io_blocktime = 0.;
		1884	timeout_blocktime = 0.;
		1885	backend = 0;
		1886	backend_fd = -1;
		1887	sig_pending = 0;
		1888	#if EV_ASYNC_ENABLE
		1889	async_pending = 0;
		1890	#endif
		1891	pipe_write_skipped = 0;
		1892	pipe_write_wanted = 0;
		1893	#if EV_USE_INOTIFY
		1894	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		1895	#endif
		1896	#if EV_USE_SIGNALFD
		1897	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		1898	#endif
		1899
		1900	if (!(flags & EVBACKEND_MASK))
1104	flags |= ev_recommended_backends ();	1901	flags |= ev_recommended_backends ();
1105		1902
1106	backend = 0;
1107	backend_fd = -1;
1108	#if EV_USE_INOTIFY	1903	#if EV_USE_IOCP
1109	fs_fd = -2;	1904	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
1110	#endif	1905	#endif
1111
1112	#if EV_USE_PORT	1906	#if EV_USE_PORT
1113	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1907	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1114	#endif	1908	#endif
1115	#if EV_USE_KQUEUE	1909	#if EV_USE_KQUEUE
1116	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1910	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1123	#endif	1917	#endif
1124	#if EV_USE_SELECT	1918	#if EV_USE_SELECT
1125	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1919	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1126	#endif	1920	#endif
1127		1921
		1922	ev_prepare_init (&pending_w, pendingcb);
		1923
		1924	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1128	ev_init (&pipeev, pipecb);	1925	ev_init (&pipe_w, pipecb);
1129	ev_set_priority (&pipeev, EV_MAXPRI);	1926	ev_set_priority (&pipe_w, EV_MAXPRI);
		1927	#endif
1130	}	1928	}
1131	}	1929	}
1132		1930
1133	static void noinline	1931	/* free up a loop structure */
		1932	void ecb_cold
1134	loop_destroy (EV_P)	1933	ev_loop_destroy (EV_P)
1135	{	1934	{
1136	int i;	1935	int i;
1137		1936
		1937	#if EV_MULTIPLICITY
		1938	/* mimic free (0) */
		1939	if (!EV_A)
		1940	return;
		1941	#endif
		1942
		1943	#if EV_CLEANUP_ENABLE
		1944	/* queue cleanup watchers (and execute them) */
		1945	if (expect_false (cleanupcnt))
		1946	{
		1947	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1948	EV_INVOKE_PENDING;
		1949	}
		1950	#endif
		1951
		1952	#if EV_CHILD_ENABLE
		1953	if (ev_is_active (&childev))
		1954	{
		1955	ev_ref (EV_A); /* child watcher */
		1956	ev_signal_stop (EV_A_ &childev);
		1957	}
		1958	#endif
		1959
1138	if (ev_is_active (&pipeev))	1960	if (ev_is_active (&pipe_w))
1139	{	1961	{
1140	ev_ref (EV_A); /* signal watcher */	1962	/*ev_ref (EV_A);*/
1141	ev_io_stop (EV_A_ &pipeev);	1963	/*ev_io_stop (EV_A_ &pipe_w);*/
1142		1964
1143	close (evpipe [0]); evpipe [0] = 0;	1965	#if EV_USE_EVENTFD
1144	close (evpipe [1]); evpipe [1] = 0;	1966	if (evfd >= 0)
		1967	close (evfd);
		1968	#endif
		1969
		1970	if (evpipe [0] >= 0)
		1971	{
		1972	EV_WIN32_CLOSE_FD (evpipe [0]);
		1973	EV_WIN32_CLOSE_FD (evpipe [1]);
		1974	}
1145	}	1975	}
		1976
		1977	#if EV_USE_SIGNALFD
		1978	if (ev_is_active (&sigfd_w))
		1979	close (sigfd);
		1980	#endif
1146		1981
1147	#if EV_USE_INOTIFY	1982	#if EV_USE_INOTIFY
1148	if (fs_fd >= 0)	1983	if (fs_fd >= 0)
1149	close (fs_fd);	1984	close (fs_fd);
1150	#endif	1985	#endif
1151		1986
1152	if (backend_fd >= 0)	1987	if (backend_fd >= 0)
1153	close (backend_fd);	1988	close (backend_fd);
1154		1989
		1990	#if EV_USE_IOCP
		1991	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1992	#endif
1155	#if EV_USE_PORT	1993	#if EV_USE_PORT
1156	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1994	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1157	#endif	1995	#endif
1158	#if EV_USE_KQUEUE	1996	#if EV_USE_KQUEUE
1159	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	1997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1174	#if EV_IDLE_ENABLE	2012	#if EV_IDLE_ENABLE
1175	array_free (idle, [i]);	2013	array_free (idle, [i]);
1176	#endif	2014	#endif
1177	}	2015	}
1178		2016
1179	ev_free (anfds); anfdmax = 0;	2017	ev_free (anfds); anfds = 0; anfdmax = 0;
1180		2018
1181	/* have to use the microsoft-never-gets-it-right macro */	2019	/* have to use the microsoft-never-gets-it-right macro */
		2020	array_free (rfeed, EMPTY);
1182	array_free (fdchange, EMPTY);	2021	array_free (fdchange, EMPTY);
1183	array_free (timer, EMPTY);	2022	array_free (timer, EMPTY);
1184	#if EV_PERIODIC_ENABLE	2023	#if EV_PERIODIC_ENABLE
1185	array_free (periodic, EMPTY);	2024	array_free (periodic, EMPTY);
1186	#endif	2025	#endif
1187	#if EV_FORK_ENABLE	2026	#if EV_FORK_ENABLE
1188	array_free (fork, EMPTY);	2027	array_free (fork, EMPTY);
1189	#endif	2028	#endif
		2029	#if EV_CLEANUP_ENABLE
		2030	array_free (cleanup, EMPTY);
		2031	#endif
1190	array_free (prepare, EMPTY);	2032	array_free (prepare, EMPTY);
1191	array_free (check, EMPTY);	2033	array_free (check, EMPTY);
		2034	#if EV_ASYNC_ENABLE
		2035	array_free (async, EMPTY);
		2036	#endif
1192		2037
1193	backend = 0;	2038	backend = 0;
1194	}
1195		2039
		2040	#if EV_MULTIPLICITY
		2041	if (ev_is_default_loop (EV_A))
		2042	#endif
		2043	ev_default_loop_ptr = 0;
		2044	#if EV_MULTIPLICITY
		2045	else
		2046	ev_free (EV_A);
		2047	#endif
		2048	}
		2049
		2050	#if EV_USE_INOTIFY
1196	void inline_size infy_fork (EV_P);	2051	inline_size void infy_fork (EV_P);
		2052	#endif
1197		2053
1198	void inline_size	2054	inline_size void
1199	loop_fork (EV_P)	2055	loop_fork (EV_P)
1200	{	2056	{
1201	#if EV_USE_PORT	2057	#if EV_USE_PORT
1202	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	2058	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1203	#endif	2059	#endif
…		…
1209	#endif	2065	#endif
1210	#if EV_USE_INOTIFY	2066	#if EV_USE_INOTIFY
1211	infy_fork (EV_A);	2067	infy_fork (EV_A);
1212	#endif	2068	#endif
1213		2069
1214	if (ev_is_active (&pipeev))	2070	if (ev_is_active (&pipe_w))
1215	{	2071	{
1216	/* this "locks" the handlers against writing to the pipe */	2072	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1217	gotsig = gotasync = 1;
1218		2073
1219	ev_ref (EV_A);	2074	ev_ref (EV_A);
1220	ev_io_stop (EV_A_ &pipeev);	2075	ev_io_stop (EV_A_ &pipe_w);
1221	close (evpipe [0]);
1222	close (evpipe [1]);
1223		2076
		2077	#if EV_USE_EVENTFD
		2078	if (evfd >= 0)
		2079	close (evfd);
		2080	#endif
		2081
		2082	if (evpipe [0] >= 0)
		2083	{
		2084	EV_WIN32_CLOSE_FD (evpipe [0]);
		2085	EV_WIN32_CLOSE_FD (evpipe [1]);
		2086	}
		2087
		2088	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1224	evpipe_init (EV_A);	2089	evpipe_init (EV_A);
1225	/* now iterate over everything, in case we missed something */	2090	/* now iterate over everything, in case we missed something */
1226	pipecb (EV_A_ &pipeev, EV_READ);	2091	pipecb (EV_A_ &pipe_w, EV_READ);
		2092	#endif
1227	}	2093	}
1228		2094
1229	postfork = 0;	2095	postfork = 0;
1230	}	2096	}
1231		2097
1232	#if EV_MULTIPLICITY	2098	#if EV_MULTIPLICITY
		2099
1233	struct ev_loop *	2100	struct ev_loop * ecb_cold
1234	ev_loop_new (unsigned int flags)	2101	ev_loop_new (unsigned int flags)
1235	{	2102	{
1236	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2103	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1237		2104
1238	memset (loop, 0, sizeof (struct ev_loop));	2105	memset (EV_A, 0, sizeof (struct ev_loop));
1239
1240	loop_init (EV_A_ flags);	2106	loop_init (EV_A_ flags);
1241		2107
1242	if (ev_backend (EV_A))	2108	if (ev_backend (EV_A))
1243	return loop;	2109	return EV_A;
1244		2110
		2111	ev_free (EV_A);
1245	return 0;	2112	return 0;
1246	}	2113	}
1247		2114
1248	void	2115	#endif /* multiplicity */
1249	ev_loop_destroy (EV_P)
1250	{
1251	loop_destroy (EV_A);
1252	ev_free (loop);
1253	}
1254		2116
1255	void	2117	#if EV_VERIFY
1256	ev_loop_fork (EV_P)	2118	static void noinline ecb_cold
		2119	verify_watcher (EV_P_ W w)
1257	{	2120	{
1258	postfork = 1; /* must be in line with ev_default_fork */	2121	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1259	}
1260		2122
		2123	if (w->pending)
		2124	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		2125	}
		2126
		2127	static void noinline ecb_cold
		2128	verify_heap (EV_P_ ANHE *heap, int N)
		2129	{
		2130	int i;
		2131
		2132	for (i = HEAP0; i < N + HEAP0; ++i)
		2133	{
		2134	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		2135	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		2136	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		2137
		2138	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		2139	}
		2140	}
		2141
		2142	static void noinline ecb_cold
		2143	array_verify (EV_P_ W *ws, int cnt)
		2144	{
		2145	while (cnt--)
		2146	{
		2147	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		2148	verify_watcher (EV_A_ ws [cnt]);
		2149	}
		2150	}
		2151	#endif
		2152
		2153	#if EV_FEATURE_API
		2154	void ecb_cold
		2155	ev_verify (EV_P)
		2156	{
		2157	#if EV_VERIFY
		2158	int i;
		2159	WL w;
		2160
		2161	assert (activecnt >= -1);
		2162
		2163	assert (fdchangemax >= fdchangecnt);
		2164	for (i = 0; i < fdchangecnt; ++i)
		2165	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		2166
		2167	assert (anfdmax >= 0);
		2168	for (i = 0; i < anfdmax; ++i)
		2169	for (w = anfds [i].head; w; w = w->next)
		2170	{
		2171	verify_watcher (EV_A_ (W)w);
		2172	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		2173	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		2174	}
		2175
		2176	assert (timermax >= timercnt);
		2177	verify_heap (EV_A_ timers, timercnt);
		2178
		2179	#if EV_PERIODIC_ENABLE
		2180	assert (periodicmax >= periodiccnt);
		2181	verify_heap (EV_A_ periodics, periodiccnt);
		2182	#endif
		2183
		2184	for (i = NUMPRI; i--; )
		2185	{
		2186	assert (pendingmax [i] >= pendingcnt [i]);
		2187	#if EV_IDLE_ENABLE
		2188	assert (idleall >= 0);
		2189	assert (idlemax [i] >= idlecnt [i]);
		2190	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		2191	#endif
		2192	}
		2193
		2194	#if EV_FORK_ENABLE
		2195	assert (forkmax >= forkcnt);
		2196	array_verify (EV_A_ (W *)forks, forkcnt);
		2197	#endif
		2198
		2199	#if EV_CLEANUP_ENABLE
		2200	assert (cleanupmax >= cleanupcnt);
		2201	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2202	#endif
		2203
		2204	#if EV_ASYNC_ENABLE
		2205	assert (asyncmax >= asynccnt);
		2206	array_verify (EV_A_ (W *)asyncs, asynccnt);
		2207	#endif
		2208
		2209	#if EV_PREPARE_ENABLE
		2210	assert (preparemax >= preparecnt);
		2211	array_verify (EV_A_ (W *)prepares, preparecnt);
		2212	#endif
		2213
		2214	#if EV_CHECK_ENABLE
		2215	assert (checkmax >= checkcnt);
		2216	array_verify (EV_A_ (W *)checks, checkcnt);
		2217	#endif
		2218
		2219	# if 0
		2220	#if EV_CHILD_ENABLE
		2221	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		2222	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		2223	#endif
		2224	# endif
		2225	#endif
		2226	}
1261	#endif	2227	#endif
1262		2228
1263	#if EV_MULTIPLICITY	2229	#if EV_MULTIPLICITY
1264	struct ev_loop *	2230	struct ev_loop * ecb_cold
1265	ev_default_loop_init (unsigned int flags)
1266	#else	2231	#else
1267	int	2232	int
		2233	#endif
1268	ev_default_loop (unsigned int flags)	2234	ev_default_loop (unsigned int flags)
1269	#endif
1270	{	2235	{
1271	if (!ev_default_loop_ptr)	2236	if (!ev_default_loop_ptr)
1272	{	2237	{
1273	#if EV_MULTIPLICITY	2238	#if EV_MULTIPLICITY
1274	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2239	EV_P = ev_default_loop_ptr = &default_loop_struct;
1275	#else	2240	#else
1276	ev_default_loop_ptr = 1;	2241	ev_default_loop_ptr = 1;
1277	#endif	2242	#endif
1278		2243
1279	loop_init (EV_A_ flags);	2244	loop_init (EV_A_ flags);
1280		2245
1281	if (ev_backend (EV_A))	2246	if (ev_backend (EV_A))
1282	{	2247	{
1283	#ifndef _WIN32	2248	#if EV_CHILD_ENABLE
1284	ev_signal_init (&childev, childcb, SIGCHLD);	2249	ev_signal_init (&childev, childcb, SIGCHLD);
1285	ev_set_priority (&childev, EV_MAXPRI);	2250	ev_set_priority (&childev, EV_MAXPRI);
1286	ev_signal_start (EV_A_ &childev);	2251	ev_signal_start (EV_A_ &childev);
1287	ev_unref (EV_A); /* child watcher should not keep loop alive */	2252	ev_unref (EV_A); /* child watcher should not keep loop alive */
1288	#endif	2253	#endif
…		…
1293		2258
1294	return ev_default_loop_ptr;	2259	return ev_default_loop_ptr;
1295	}	2260	}
1296		2261
1297	void	2262	void
1298	ev_default_destroy (void)	2263	ev_loop_fork (EV_P)
1299	{	2264	{
1300	#if EV_MULTIPLICITY
1301	struct ev_loop *loop = ev_default_loop_ptr;
1302	#endif
1303
1304	#ifndef _WIN32
1305	ev_ref (EV_A); /* child watcher */
1306	ev_signal_stop (EV_A_ &childev);
1307	#endif
1308
1309	loop_destroy (EV_A);
1310	}
1311
1312	void
1313	ev_default_fork (void)
1314	{
1315	#if EV_MULTIPLICITY
1316	struct ev_loop *loop = ev_default_loop_ptr;
1317	#endif
1318
1319	if (backend)
1320	postfork = 1; /* must be in line with ev_loop_fork */	2265	postfork = 1; /* must be in line with ev_default_fork */
1321	}	2266	}
1322		2267
1323	/*****************************************************************************/	2268	/*****************************************************************************/
1324		2269
1325	void	2270	void
1326	ev_invoke (EV_P_ void *w, int revents)	2271	ev_invoke (EV_P_ void *w, int revents)
1327	{	2272	{
1328	EV_CB_INVOKE ((W)w, revents);	2273	EV_CB_INVOKE ((W)w, revents);
1329	}	2274	}
1330		2275
1331	void inline_speed	2276	unsigned int
1332	call_pending (EV_P)	2277	ev_pending_count (EV_P)
		2278	{
		2279	int pri;
		2280	unsigned int count = 0;
		2281
		2282	for (pri = NUMPRI; pri--; )
		2283	count += pendingcnt [pri];
		2284
		2285	return count;
		2286	}
		2287
		2288	void noinline
		2289	ev_invoke_pending (EV_P)
1333	{	2290	{
1334	int pri;	2291	int pri;
1335		2292
1336	for (pri = NUMPRI; pri--; )	2293	for (pri = NUMPRI; pri--; )
1337	while (pendingcnt [pri])	2294	while (pendingcnt [pri])
1338	{	2295	{
1339	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2296	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1340		2297
1341	if (expect_true (p->w))
1342	{
1343	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1344
1345	p->w->pending = 0;	2298	p->w->pending = 0;
1346	EV_CB_INVOKE (p->w, p->events);	2299	EV_CB_INVOKE (p->w, p->events);
1347	}	2300	EV_FREQUENT_CHECK;
1348	}	2301	}
1349	}	2302	}
1350		2303
1351	void inline_size
1352	timers_reify (EV_P)
1353	{
1354	while (timercnt && ((WT)timers [0])->at <= mn_now)
1355	{
1356	ev_timer *w = (ev_timer *)timers [0];
1357
1358	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1359
1360	/* first reschedule or stop timer */
1361	if (w->repeat)
1362	{
1363	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1364
1365	((WT)w)->at += w->repeat;
1366	if (((WT)w)->at < mn_now)
1367	((WT)w)->at = mn_now;
1368
1369	downheap (timers, timercnt, 0);
1370	}
1371	else
1372	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1373
1374	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1375	}
1376	}
1377
1378	#if EV_PERIODIC_ENABLE
1379	void inline_size
1380	periodics_reify (EV_P)
1381	{
1382	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1383	{
1384	ev_periodic *w = (ev_periodic *)periodics [0];
1385
1386	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1387
1388	/* first reschedule or stop timer */
1389	if (w->reschedule_cb)
1390	{
1391	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1392	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1393	downheap (periodics, periodiccnt, 0);
1394	}
1395	else if (w->interval)
1396	{
1397	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1398	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1399	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1400	downheap (periodics, periodiccnt, 0);
1401	}
1402	else
1403	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1404
1405	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1406	}
1407	}
1408
1409	static void noinline
1410	periodics_reschedule (EV_P)
1411	{
1412	int i;
1413
1414	/* adjust periodics after time jump */
1415	for (i = 0; i < periodiccnt; ++i)
1416	{
1417	ev_periodic *w = (ev_periodic *)periodics [i];
1418
1419	if (w->reschedule_cb)
1420	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1421	else if (w->interval)
1422	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1423	}
1424
1425	/* now rebuild the heap */
1426	for (i = periodiccnt >> 1; i--; )
1427	downheap (periodics, periodiccnt, i);
1428	}
1429	#endif
1430
1431	#if EV_IDLE_ENABLE	2304	#if EV_IDLE_ENABLE
1432	void inline_size	2305	/* make idle watchers pending. this handles the "call-idle */
		2306	/* only when higher priorities are idle" logic */
		2307	inline_size void
1433	idle_reify (EV_P)	2308	idle_reify (EV_P)
1434	{	2309	{
1435	if (expect_false (idleall))	2310	if (expect_false (idleall))
1436	{	2311	{
1437	int pri;	2312	int pri;
…		…
1449	}	2324	}
1450	}	2325	}
1451	}	2326	}
1452	#endif	2327	#endif
1453		2328
1454	void inline_speed	2329	/* make timers pending */
		2330	inline_size void
		2331	timers_reify (EV_P)
		2332	{
		2333	EV_FREQUENT_CHECK;
		2334
		2335	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2336	{
		2337	do
		2338	{
		2339	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2340
		2341	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2342
		2343	/* first reschedule or stop timer */
		2344	if (w->repeat)
		2345	{
		2346	ev_at (w) += w->repeat;
		2347	if (ev_at (w) < mn_now)
		2348	ev_at (w) = mn_now;
		2349
		2350	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2351
		2352	ANHE_at_cache (timers [HEAP0]);
		2353	downheap (timers, timercnt, HEAP0);
		2354	}
		2355	else
		2356	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2357
		2358	EV_FREQUENT_CHECK;
		2359	feed_reverse (EV_A_ (W)w);
		2360	}
		2361	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2362
		2363	feed_reverse_done (EV_A_ EV_TIMER);
		2364	}
		2365	}
		2366
		2367	#if EV_PERIODIC_ENABLE
		2368
		2369	static void noinline
		2370	periodic_recalc (EV_P_ ev_periodic *w)
		2371	{
		2372	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2373	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2374
		2375	/* the above almost always errs on the low side */
		2376	while (at <= ev_rt_now)
		2377	{
		2378	ev_tstamp nat = at + w->interval;
		2379
		2380	/* when resolution fails us, we use ev_rt_now */
		2381	if (expect_false (nat == at))
		2382	{
		2383	at = ev_rt_now;
		2384	break;
		2385	}
		2386
		2387	at = nat;
		2388	}
		2389
		2390	ev_at (w) = at;
		2391	}
		2392
		2393	/* make periodics pending */
		2394	inline_size void
		2395	periodics_reify (EV_P)
		2396	{
		2397	EV_FREQUENT_CHECK;
		2398
		2399	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2400	{
		2401	int feed_count = 0;
		2402
		2403	do
		2404	{
		2405	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2406
		2407	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2408
		2409	/* first reschedule or stop timer */
		2410	if (w->reschedule_cb)
		2411	{
		2412	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2413
		2414	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2415
		2416	ANHE_at_cache (periodics [HEAP0]);
		2417	downheap (periodics, periodiccnt, HEAP0);
		2418	}
		2419	else if (w->interval)
		2420	{
		2421	periodic_recalc (EV_A_ w);
		2422	ANHE_at_cache (periodics [HEAP0]);
		2423	downheap (periodics, periodiccnt, HEAP0);
		2424	}
		2425	else
		2426	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2427
		2428	EV_FREQUENT_CHECK;
		2429	feed_reverse (EV_A_ (W)w);
		2430	}
		2431	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2432
		2433	feed_reverse_done (EV_A_ EV_PERIODIC);
		2434	}
		2435	}
		2436
		2437	/* simply recalculate all periodics */
		2438	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		2439	static void noinline ecb_cold
		2440	periodics_reschedule (EV_P)
		2441	{
		2442	int i;
		2443
		2444	/* adjust periodics after time jump */
		2445	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2446	{
		2447	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2448
		2449	if (w->reschedule_cb)
		2450	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2451	else if (w->interval)
		2452	periodic_recalc (EV_A_ w);
		2453
		2454	ANHE_at_cache (periodics [i]);
		2455	}
		2456
		2457	reheap (periodics, periodiccnt);
		2458	}
		2459	#endif
		2460
		2461	/* adjust all timers by a given offset */
		2462	static void noinline ecb_cold
		2463	timers_reschedule (EV_P_ ev_tstamp adjust)
		2464	{
		2465	int i;
		2466
		2467	for (i = 0; i < timercnt; ++i)
		2468	{
		2469	ANHE *he = timers + i + HEAP0;
		2470	ANHE_w (*he)->at += adjust;
		2471	ANHE_at_cache (*he);
		2472	}
		2473	}
		2474
		2475	/* fetch new monotonic and realtime times from the kernel */
		2476	/* also detect if there was a timejump, and act accordingly */
		2477	inline_speed void
1455	time_update (EV_P_ ev_tstamp max_block)	2478	time_update (EV_P_ ev_tstamp max_block)
1456	{	2479	{
1457	int i;
1458
1459	#if EV_USE_MONOTONIC	2480	#if EV_USE_MONOTONIC
1460	if (expect_true (have_monotonic))	2481	if (expect_true (have_monotonic))
1461	{	2482	{
		2483	int i;
1462	ev_tstamp odiff = rtmn_diff;	2484	ev_tstamp odiff = rtmn_diff;
1463		2485
1464	mn_now = get_clock ();	2486	mn_now = get_clock ();
1465		2487
1466	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2488	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1482	* doesn't hurt either as we only do this on time-jumps or	2504	* doesn't hurt either as we only do this on time-jumps or
1483	* in the unlikely event of having been preempted here.	2505	* in the unlikely event of having been preempted here.
1484	*/	2506	*/
1485	for (i = 4; --i; )	2507	for (i = 4; --i; )
1486	{	2508	{
		2509	ev_tstamp diff;
1487	rtmn_diff = ev_rt_now - mn_now;	2510	rtmn_diff = ev_rt_now - mn_now;
1488		2511
1489	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2512	diff = odiff - rtmn_diff;
		2513
		2514	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1490	return; /* all is well */	2515	return; /* all is well */
1491		2516
1492	ev_rt_now = ev_time ();	2517	ev_rt_now = ev_time ();
1493	mn_now = get_clock ();	2518	mn_now = get_clock ();
1494	now_floor = mn_now;	2519	now_floor = mn_now;
1495	}	2520	}
1496		2521
		2522	/* no timer adjustment, as the monotonic clock doesn't jump */
		2523	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1497	# if EV_PERIODIC_ENABLE	2524	# if EV_PERIODIC_ENABLE
1498	periodics_reschedule (EV_A);	2525	periodics_reschedule (EV_A);
1499	# endif	2526	# endif
1500	/* no timer adjustment, as the monotonic clock doesn't jump */
1501	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1502	}	2527	}
1503	else	2528	else
1504	#endif	2529	#endif
1505	{	2530	{
1506	ev_rt_now = ev_time ();	2531	ev_rt_now = ev_time ();
1507		2532
1508	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2533	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1509	{	2534	{
		2535	/* adjust timers. this is easy, as the offset is the same for all of them */
		2536	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1510	#if EV_PERIODIC_ENABLE	2537	#if EV_PERIODIC_ENABLE
1511	periodics_reschedule (EV_A);	2538	periodics_reschedule (EV_A);
1512	#endif	2539	#endif
1513	/* adjust timers. this is easy, as the offset is the same for all of them */
1514	for (i = 0; i < timercnt; ++i)
1515	((WT)timers [i])->at += ev_rt_now - mn_now;
1516	}	2540	}
1517		2541
1518	mn_now = ev_rt_now;	2542	mn_now = ev_rt_now;
1519	}	2543	}
1520	}	2544	}
1521		2545
1522	void	2546	void
1523	ev_ref (EV_P)
1524	{
1525	++activecnt;
1526	}
1527
1528	void
1529	ev_unref (EV_P)
1530	{
1531	--activecnt;
1532	}
1533
1534	static int loop_done;
1535
1536	void
1537	ev_loop (EV_P_ int flags)	2547	ev_run (EV_P_ int flags)
1538	{	2548	{
1539	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2549	#if EV_FEATURE_API
1540	? EVUNLOOP_ONE	2550	++loop_depth;
1541	: EVUNLOOP_CANCEL;	2551	#endif
1542		2552
		2553	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		2554
		2555	loop_done = EVBREAK_CANCEL;
		2556
1543	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2557	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1544		2558
1545	do	2559	do
1546	{	2560	{
		2561	#if EV_VERIFY >= 2
		2562	ev_verify (EV_A);
		2563	#endif
		2564
1547	#ifndef _WIN32	2565	#ifndef _WIN32
1548	if (expect_false (curpid)) /* penalise the forking check even more */	2566	if (expect_false (curpid)) /* penalise the forking check even more */
1549	if (expect_false (getpid () != curpid))	2567	if (expect_false (getpid () != curpid))
1550	{	2568	{
1551	curpid = getpid ();	2569	curpid = getpid ();
…		…
1557	/* we might have forked, so queue fork handlers */	2575	/* we might have forked, so queue fork handlers */
1558	if (expect_false (postfork))	2576	if (expect_false (postfork))
1559	if (forkcnt)	2577	if (forkcnt)
1560	{	2578	{
1561	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2579	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1562	call_pending (EV_A);	2580	EV_INVOKE_PENDING;
1563	}	2581	}
1564	#endif	2582	#endif
1565		2583
		2584	#if EV_PREPARE_ENABLE
1566	/* queue prepare watchers (and execute them) */	2585	/* queue prepare watchers (and execute them) */
1567	if (expect_false (preparecnt))	2586	if (expect_false (preparecnt))
1568	{	2587	{
1569	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2588	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1570	call_pending (EV_A);	2589	EV_INVOKE_PENDING;
1571	}	2590	}
		2591	#endif
1572		2592
1573	if (expect_false (!activecnt))	2593	if (expect_false (loop_done))
1574	break;	2594	break;
1575		2595
1576	/* we might have forked, so reify kernel state if necessary */	2596	/* we might have forked, so reify kernel state if necessary */
1577	if (expect_false (postfork))	2597	if (expect_false (postfork))
1578	loop_fork (EV_A);	2598	loop_fork (EV_A);
…		…
1583	/* calculate blocking time */	2603	/* calculate blocking time */
1584	{	2604	{
1585	ev_tstamp waittime = 0.;	2605	ev_tstamp waittime = 0.;
1586	ev_tstamp sleeptime = 0.;	2606	ev_tstamp sleeptime = 0.;
1587		2607
		2608	/* remember old timestamp for io_blocktime calculation */
		2609	ev_tstamp prev_mn_now = mn_now;
		2610
		2611	/* update time to cancel out callback processing overhead */
		2612	time_update (EV_A_ 1e100);
		2613
		2614	/* from now on, we want a pipe-wake-up */
		2615	pipe_write_wanted = 1;
		2616
		2617	ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
		2618
1588	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2619	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1589	{	2620	{
1590	/* update time to cancel out callback processing overhead */
1591	time_update (EV_A_ 1e100);
1592
1593	waittime = MAX_BLOCKTIME;	2621	waittime = MAX_BLOCKTIME;
1594		2622
1595	if (timercnt)	2623	if (timercnt)
1596	{	2624	{
1597	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2625	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1598	if (waittime > to) waittime = to;	2626	if (waittime > to) waittime = to;
1599	}	2627	}
1600		2628
1601	#if EV_PERIODIC_ENABLE	2629	#if EV_PERIODIC_ENABLE
1602	if (periodiccnt)	2630	if (periodiccnt)
1603	{	2631	{
1604	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2632	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1605	if (waittime > to) waittime = to;	2633	if (waittime > to) waittime = to;
1606	}	2634	}
1607	#endif	2635	#endif
1608		2636
		2637	/* don't let timeouts decrease the waittime below timeout_blocktime */
1609	if (expect_false (waittime < timeout_blocktime))	2638	if (expect_false (waittime < timeout_blocktime))
1610	waittime = timeout_blocktime;	2639	waittime = timeout_blocktime;
1611		2640
1612	sleeptime = waittime - backend_fudge;	2641	/* at this point, we NEED to wait, so we have to ensure */
		2642	/* to pass a minimum nonzero value to the backend */
		2643	if (expect_false (waittime < backend_mintime))
		2644	waittime = backend_mintime;
1613		2645
		2646	/* extra check because io_blocktime is commonly 0 */
1614	if (expect_true (sleeptime > io_blocktime))	2647	if (expect_false (io_blocktime))
1615	sleeptime = io_blocktime;
1616
1617	if (sleeptime)
1618	{	2648	{
		2649	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2650
		2651	if (sleeptime > waittime - backend_mintime)
		2652	sleeptime = waittime - backend_mintime;
		2653
		2654	if (expect_true (sleeptime > 0.))
		2655	{
1619	ev_sleep (sleeptime);	2656	ev_sleep (sleeptime);
1620	waittime -= sleeptime;	2657	waittime -= sleeptime;
		2658	}
1621	}	2659	}
1622	}	2660	}
1623		2661
		2662	#if EV_FEATURE_API
1624	++loop_count;	2663	++loop_count;
		2664	#endif
		2665	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1625	backend_poll (EV_A_ waittime);	2666	backend_poll (EV_A_ waittime);
		2667	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2668
		2669	pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
		2670
		2671	if (pipe_write_skipped)
		2672	{
		2673	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2674	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2675	}
		2676
1626		2677
1627	/* update ev_rt_now, do magic */	2678	/* update ev_rt_now, do magic */
1628	time_update (EV_A_ waittime + sleeptime);	2679	time_update (EV_A_ waittime + sleeptime);
1629	}	2680	}
1630		2681
…		…
1637	#if EV_IDLE_ENABLE	2688	#if EV_IDLE_ENABLE
1638	/* queue idle watchers unless other events are pending */	2689	/* queue idle watchers unless other events are pending */
1639	idle_reify (EV_A);	2690	idle_reify (EV_A);
1640	#endif	2691	#endif
1641		2692
		2693	#if EV_CHECK_ENABLE
1642	/* queue check watchers, to be executed first */	2694	/* queue check watchers, to be executed first */
1643	if (expect_false (checkcnt))	2695	if (expect_false (checkcnt))
1644	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2696	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2697	#endif
1645		2698
1646	call_pending (EV_A);	2699	EV_INVOKE_PENDING;
1647
1648	}	2700	}
1649	while (expect_true (activecnt && !loop_done));	2701	while (expect_true (
		2702	activecnt
		2703	&& !loop_done
		2704	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		2705	));
1650		2706
1651	if (loop_done == EVUNLOOP_ONE)	2707	if (loop_done == EVBREAK_ONE)
1652	loop_done = EVUNLOOP_CANCEL;	2708	loop_done = EVBREAK_CANCEL;
		2709
		2710	#if EV_FEATURE_API
		2711	--loop_depth;
		2712	#endif
1653	}	2713	}
1654		2714
1655	void	2715	void
1656	ev_unloop (EV_P_ int how)	2716	ev_break (EV_P_ int how)
1657	{	2717	{
1658	loop_done = how;	2718	loop_done = how;
1659	}	2719	}
1660		2720
		2721	void
		2722	ev_ref (EV_P)
		2723	{
		2724	++activecnt;
		2725	}
		2726
		2727	void
		2728	ev_unref (EV_P)
		2729	{
		2730	--activecnt;
		2731	}
		2732
		2733	void
		2734	ev_now_update (EV_P)
		2735	{
		2736	time_update (EV_A_ 1e100);
		2737	}
		2738
		2739	void
		2740	ev_suspend (EV_P)
		2741	{
		2742	ev_now_update (EV_A);
		2743	}
		2744
		2745	void
		2746	ev_resume (EV_P)
		2747	{
		2748	ev_tstamp mn_prev = mn_now;
		2749
		2750	ev_now_update (EV_A);
		2751	timers_reschedule (EV_A_ mn_now - mn_prev);
		2752	#if EV_PERIODIC_ENABLE
		2753	/* TODO: really do this? */
		2754	periodics_reschedule (EV_A);
		2755	#endif
		2756	}
		2757
1661	/*****************************************************************************/	2758	/*****************************************************************************/
		2759	/* singly-linked list management, used when the expected list length is short */
1662		2760
1663	void inline_size	2761	inline_size void
1664	wlist_add (WL *head, WL elem)	2762	wlist_add (WL *head, WL elem)
1665	{	2763	{
1666	elem->next = *head;	2764	elem->next = *head;
1667	*head = elem;	2765	*head = elem;
1668	}	2766	}
1669		2767
1670	void inline_size	2768	inline_size void
1671	wlist_del (WL *head, WL elem)	2769	wlist_del (WL *head, WL elem)
1672	{	2770	{
1673	while (*head)	2771	while (*head)
1674	{	2772	{
1675	if (*head == elem)	2773	if (expect_true (*head == elem))
1676	{	2774	{
1677	*head = elem->next;	2775	*head = elem->next;
1678	return;	2776	break;
1679	}	2777	}
1680		2778
1681	head = &(*head)->next;	2779	head = &(*head)->next;
1682	}	2780	}
1683	}	2781	}
1684		2782
1685	void inline_speed	2783	/* internal, faster, version of ev_clear_pending */
		2784	inline_speed void
1686	clear_pending (EV_P_ W w)	2785	clear_pending (EV_P_ W w)
1687	{	2786	{
1688	if (w->pending)	2787	if (w->pending)
1689	{	2788	{
1690	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2789	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1691	w->pending = 0;	2790	w->pending = 0;
1692	}	2791	}
1693	}	2792	}
1694		2793
1695	int	2794	int
…		…
1699	int pending = w_->pending;	2798	int pending = w_->pending;
1700		2799
1701	if (expect_true (pending))	2800	if (expect_true (pending))
1702	{	2801	{
1703	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2802	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2803	p->w = (W)&pending_w;
1704	w_->pending = 0;	2804	w_->pending = 0;
1705	p->w = 0;
1706	return p->events;	2805	return p->events;
1707	}	2806	}
1708	else	2807	else
1709	return 0;	2808	return 0;
1710	}	2809	}
1711		2810
1712	void inline_size	2811	inline_size void
1713	pri_adjust (EV_P_ W w)	2812	pri_adjust (EV_P_ W w)
1714	{	2813	{
1715	int pri = w->priority;	2814	int pri = ev_priority (w);
1716	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2815	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1717	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2816	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1718	w->priority = pri;	2817	ev_set_priority (w, pri);
1719	}	2818	}
1720		2819
1721	void inline_speed	2820	inline_speed void
1722	ev_start (EV_P_ W w, int active)	2821	ev_start (EV_P_ W w, int active)
1723	{	2822	{
1724	pri_adjust (EV_A_ w);	2823	pri_adjust (EV_A_ w);
1725	w->active = active;	2824	w->active = active;
1726	ev_ref (EV_A);	2825	ev_ref (EV_A);
1727	}	2826	}
1728		2827
1729	void inline_size	2828	inline_size void
1730	ev_stop (EV_P_ W w)	2829	ev_stop (EV_P_ W w)
1731	{	2830	{
1732	ev_unref (EV_A);	2831	ev_unref (EV_A);
1733	w->active = 0;	2832	w->active = 0;
1734	}	2833	}
…		…
1741	int fd = w->fd;	2840	int fd = w->fd;
1742		2841
1743	if (expect_false (ev_is_active (w)))	2842	if (expect_false (ev_is_active (w)))
1744	return;	2843	return;
1745		2844
1746	assert (("ev_io_start called with negative fd", fd >= 0));	2845	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2846	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2847
		2848	EV_FREQUENT_CHECK;
1747		2849
1748	ev_start (EV_A_ (W)w, 1);	2850	ev_start (EV_A_ (W)w, 1);
1749	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2851	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1750	wlist_add (&anfds[fd].head, (WL)w);	2852	wlist_add (&anfds[fd].head, (WL)w);
1751		2853
1752	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2854	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1753	w->events &= ~EV_IOFDSET;	2855	w->events &= ~EV__IOFDSET;
		2856
		2857	EV_FREQUENT_CHECK;
1754	}	2858	}
1755		2859
1756	void noinline	2860	void noinline
1757	ev_io_stop (EV_P_ ev_io *w)	2861	ev_io_stop (EV_P_ ev_io *w)
1758	{	2862	{
1759	clear_pending (EV_A_ (W)w);	2863	clear_pending (EV_A_ (W)w);
1760	if (expect_false (!ev_is_active (w)))	2864	if (expect_false (!ev_is_active (w)))
1761	return;	2865	return;
1762		2866
1763	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2867	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2868
		2869	EV_FREQUENT_CHECK;
1764		2870
1765	wlist_del (&anfds[w->fd].head, (WL)w);	2871	wlist_del (&anfds[w->fd].head, (WL)w);
1766	ev_stop (EV_A_ (W)w);	2872	ev_stop (EV_A_ (W)w);
1767		2873
1768	fd_change (EV_A_ w->fd, 1);	2874	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
		2875
		2876	EV_FREQUENT_CHECK;
1769	}	2877	}
1770		2878
1771	void noinline	2879	void noinline
1772	ev_timer_start (EV_P_ ev_timer *w)	2880	ev_timer_start (EV_P_ ev_timer *w)
1773	{	2881	{
1774	if (expect_false (ev_is_active (w)))	2882	if (expect_false (ev_is_active (w)))
1775	return;	2883	return;
1776		2884
1777	((WT)w)->at += mn_now;	2885	ev_at (w) += mn_now;
1778		2886
1779	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2887	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1780		2888
		2889	EV_FREQUENT_CHECK;
		2890
		2891	++timercnt;
1781	ev_start (EV_A_ (W)w, ++timercnt);	2892	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1782	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2893	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1783	timers [timercnt - 1] = (WT)w;	2894	ANHE_w (timers [ev_active (w)]) = (WT)w;
1784	upheap (timers, timercnt - 1);	2895	ANHE_at_cache (timers [ev_active (w)]);
		2896	upheap (timers, ev_active (w));
1785		2897
		2898	EV_FREQUENT_CHECK;
		2899
1786	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2900	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1787	}	2901	}
1788		2902
1789	void noinline	2903	void noinline
1790	ev_timer_stop (EV_P_ ev_timer *w)	2904	ev_timer_stop (EV_P_ ev_timer *w)
1791	{	2905	{
1792	clear_pending (EV_A_ (W)w);	2906	clear_pending (EV_A_ (W)w);
1793	if (expect_false (!ev_is_active (w)))	2907	if (expect_false (!ev_is_active (w)))
1794	return;	2908	return;
1795		2909
1796	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2910	EV_FREQUENT_CHECK;
1797		2911
1798	{	2912	{
1799	int active = ((W)w)->active;	2913	int active = ev_active (w);
1800		2914
		2915	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2916
		2917	--timercnt;
		2918
1801	if (expect_true (--active < --timercnt))	2919	if (expect_true (active < timercnt + HEAP0))
1802	{	2920	{
1803	timers [active] = timers [timercnt];	2921	timers [active] = timers [timercnt + HEAP0];
1804	adjustheap (timers, timercnt, active);	2922	adjustheap (timers, timercnt, active);
1805	}	2923	}
1806	}	2924	}
1807		2925
1808	((WT)w)->at -= mn_now;	2926	ev_at (w) -= mn_now;
1809		2927
1810	ev_stop (EV_A_ (W)w);	2928	ev_stop (EV_A_ (W)w);
		2929
		2930	EV_FREQUENT_CHECK;
1811	}	2931	}
1812		2932
1813	void noinline	2933	void noinline
1814	ev_timer_again (EV_P_ ev_timer *w)	2934	ev_timer_again (EV_P_ ev_timer *w)
1815	{	2935	{
		2936	EV_FREQUENT_CHECK;
		2937
1816	if (ev_is_active (w))	2938	if (ev_is_active (w))
1817	{	2939	{
1818	if (w->repeat)	2940	if (w->repeat)
1819	{	2941	{
1820	((WT)w)->at = mn_now + w->repeat;	2942	ev_at (w) = mn_now + w->repeat;
		2943	ANHE_at_cache (timers [ev_active (w)]);
1821	adjustheap (timers, timercnt, ((W)w)->active - 1);	2944	adjustheap (timers, timercnt, ev_active (w));
1822	}	2945	}
1823	else	2946	else
1824	ev_timer_stop (EV_A_ w);	2947	ev_timer_stop (EV_A_ w);
1825	}	2948	}
1826	else if (w->repeat)	2949	else if (w->repeat)
1827	{	2950	{
1828	w->at = w->repeat;	2951	ev_at (w) = w->repeat;
1829	ev_timer_start (EV_A_ w);	2952	ev_timer_start (EV_A_ w);
1830	}	2953	}
		2954
		2955	EV_FREQUENT_CHECK;
		2956	}
		2957
		2958	ev_tstamp
		2959	ev_timer_remaining (EV_P_ ev_timer *w)
		2960	{
		2961	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1831	}	2962	}
1832		2963
1833	#if EV_PERIODIC_ENABLE	2964	#if EV_PERIODIC_ENABLE
1834	void noinline	2965	void noinline
1835	ev_periodic_start (EV_P_ ev_periodic *w)	2966	ev_periodic_start (EV_P_ ev_periodic *w)
1836	{	2967	{
1837	if (expect_false (ev_is_active (w)))	2968	if (expect_false (ev_is_active (w)))
1838	return;	2969	return;
1839		2970
1840	if (w->reschedule_cb)	2971	if (w->reschedule_cb)
1841	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2972	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1842	else if (w->interval)	2973	else if (w->interval)
1843	{	2974	{
1844	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2975	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1845	/* this formula differs from the one in periodic_reify because we do not always round up */	2976	periodic_recalc (EV_A_ w);
1846	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1847	}	2977	}
1848	else	2978	else
1849	((WT)w)->at = w->offset;	2979	ev_at (w) = w->offset;
1850		2980
		2981	EV_FREQUENT_CHECK;
		2982
		2983	++periodiccnt;
1851	ev_start (EV_A_ (W)w, ++periodiccnt);	2984	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1852	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2985	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1853	periodics [periodiccnt - 1] = (WT)w;	2986	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1854	upheap (periodics, periodiccnt - 1);	2987	ANHE_at_cache (periodics [ev_active (w)]);
		2988	upheap (periodics, ev_active (w));
1855		2989
		2990	EV_FREQUENT_CHECK;
		2991
1856	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2992	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1857	}	2993	}
1858		2994
1859	void noinline	2995	void noinline
1860	ev_periodic_stop (EV_P_ ev_periodic *w)	2996	ev_periodic_stop (EV_P_ ev_periodic *w)
1861	{	2997	{
1862	clear_pending (EV_A_ (W)w);	2998	clear_pending (EV_A_ (W)w);
1863	if (expect_false (!ev_is_active (w)))	2999	if (expect_false (!ev_is_active (w)))
1864	return;	3000	return;
1865		3001
1866	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	3002	EV_FREQUENT_CHECK;
1867		3003
1868	{	3004	{
1869	int active = ((W)w)->active;	3005	int active = ev_active (w);
1870		3006
		3007	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		3008
		3009	--periodiccnt;
		3010
1871	if (expect_true (--active < --periodiccnt))	3011	if (expect_true (active < periodiccnt + HEAP0))
1872	{	3012	{
1873	periodics [active] = periodics [periodiccnt];	3013	periodics [active] = periodics [periodiccnt + HEAP0];
1874	adjustheap (periodics, periodiccnt, active);	3014	adjustheap (periodics, periodiccnt, active);
1875	}	3015	}
1876	}	3016	}
1877		3017
1878	ev_stop (EV_A_ (W)w);	3018	ev_stop (EV_A_ (W)w);
		3019
		3020	EV_FREQUENT_CHECK;
1879	}	3021	}
1880		3022
1881	void noinline	3023	void noinline
1882	ev_periodic_again (EV_P_ ev_periodic *w)	3024	ev_periodic_again (EV_P_ ev_periodic *w)
1883	{	3025	{
…		…
1889		3031
1890	#ifndef SA_RESTART	3032	#ifndef SA_RESTART
1891	# define SA_RESTART 0	3033	# define SA_RESTART 0
1892	#endif	3034	#endif
1893		3035
		3036	#if EV_SIGNAL_ENABLE
		3037
1894	void noinline	3038	void noinline
1895	ev_signal_start (EV_P_ ev_signal *w)	3039	ev_signal_start (EV_P_ ev_signal *w)
1896	{	3040	{
1897	#if EV_MULTIPLICITY
1898	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1899	#endif
1900	if (expect_false (ev_is_active (w)))	3041	if (expect_false (ev_is_active (w)))
1901	return;	3042	return;
1902		3043
1903	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	3044	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1904		3045
1905	evpipe_init (EV_A);	3046	#if EV_MULTIPLICITY
		3047	assert (("libev: a signal must not be attached to two different loops",
		3048	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1906		3049
		3050	signals [w->signum - 1].loop = EV_A;
		3051	#endif
		3052
		3053	EV_FREQUENT_CHECK;
		3054
		3055	#if EV_USE_SIGNALFD
		3056	if (sigfd == -2)
1907	{	3057	{
1908	#ifndef _WIN32	3058	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1909	sigset_t full, prev;	3059	if (sigfd < 0 && errno == EINVAL)
1910	sigfillset (&full);	3060	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1911	sigprocmask (SIG_SETMASK, &full, &prev);
1912	#endif
1913		3061
1914	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	3062	if (sigfd >= 0)
		3063	{
		3064	fd_intern (sigfd); /* doing it twice will not hurt */
1915		3065
1916	#ifndef _WIN32	3066	sigemptyset (&sigfd_set);
1917	sigprocmask (SIG_SETMASK, &prev, 0);	3067
1918	#endif	3068	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		3069	ev_set_priority (&sigfd_w, EV_MAXPRI);
		3070	ev_io_start (EV_A_ &sigfd_w);
		3071	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		3072	}
1919	}	3073	}
		3074
		3075	if (sigfd >= 0)
		3076	{
		3077	/* TODO: check .head */
		3078	sigaddset (&sigfd_set, w->signum);
		3079	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		3080
		3081	signalfd (sigfd, &sigfd_set, 0);
		3082	}
		3083	#endif
1920		3084
1921	ev_start (EV_A_ (W)w, 1);	3085	ev_start (EV_A_ (W)w, 1);
1922	wlist_add (&signals [w->signum - 1].head, (WL)w);	3086	wlist_add (&signals [w->signum - 1].head, (WL)w);
1923		3087
1924	if (!((WL)w)->next)	3088	if (!((WL)w)->next)
		3089	# if EV_USE_SIGNALFD
		3090	if (sigfd < 0) /*TODO*/
		3091	# endif
1925	{	3092	{
1926	#if _WIN32	3093	# ifdef _WIN32
		3094	evpipe_init (EV_A);
		3095
1927	signal (w->signum, sighandler);	3096	signal (w->signum, ev_sighandler);
1928	#else	3097	# else
1929	struct sigaction sa;	3098	struct sigaction sa;
		3099
		3100	evpipe_init (EV_A);
		3101
1930	sa.sa_handler = sighandler;	3102	sa.sa_handler = ev_sighandler;
1931	sigfillset (&sa.sa_mask);	3103	sigfillset (&sa.sa_mask);
1932	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3104	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1933	sigaction (w->signum, &sa, 0);	3105	sigaction (w->signum, &sa, 0);
		3106
		3107	if (origflags & EVFLAG_NOSIGMASK)
		3108	{
		3109	sigemptyset (&sa.sa_mask);
		3110	sigaddset (&sa.sa_mask, w->signum);
		3111	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3112	}
1934	#endif	3113	#endif
1935	}	3114	}
		3115
		3116	EV_FREQUENT_CHECK;
1936	}	3117	}
1937		3118
1938	void noinline	3119	void noinline
1939	ev_signal_stop (EV_P_ ev_signal *w)	3120	ev_signal_stop (EV_P_ ev_signal *w)
1940	{	3121	{
1941	clear_pending (EV_A_ (W)w);	3122	clear_pending (EV_A_ (W)w);
1942	if (expect_false (!ev_is_active (w)))	3123	if (expect_false (!ev_is_active (w)))
1943	return;	3124	return;
1944		3125
		3126	EV_FREQUENT_CHECK;
		3127
1945	wlist_del (&signals [w->signum - 1].head, (WL)w);	3128	wlist_del (&signals [w->signum - 1].head, (WL)w);
1946	ev_stop (EV_A_ (W)w);	3129	ev_stop (EV_A_ (W)w);
1947		3130
1948	if (!signals [w->signum - 1].head)	3131	if (!signals [w->signum - 1].head)
		3132	{
		3133	#if EV_MULTIPLICITY
		3134	signals [w->signum - 1].loop = 0; /* unattach from signal */
		3135	#endif
		3136	#if EV_USE_SIGNALFD
		3137	if (sigfd >= 0)
		3138	{
		3139	sigset_t ss;
		3140
		3141	sigemptyset (&ss);
		3142	sigaddset (&ss, w->signum);
		3143	sigdelset (&sigfd_set, w->signum);
		3144
		3145	signalfd (sigfd, &sigfd_set, 0);
		3146	sigprocmask (SIG_UNBLOCK, &ss, 0);
		3147	}
		3148	else
		3149	#endif
1949	signal (w->signum, SIG_DFL);	3150	signal (w->signum, SIG_DFL);
		3151	}
		3152
		3153	EV_FREQUENT_CHECK;
1950	}	3154	}
		3155
		3156	#endif
		3157
		3158	#if EV_CHILD_ENABLE
1951		3159
1952	void	3160	void
1953	ev_child_start (EV_P_ ev_child *w)	3161	ev_child_start (EV_P_ ev_child *w)
1954	{	3162	{
1955	#if EV_MULTIPLICITY	3163	#if EV_MULTIPLICITY
1956	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3164	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1957	#endif	3165	#endif
1958	if (expect_false (ev_is_active (w)))	3166	if (expect_false (ev_is_active (w)))
1959	return;	3167	return;
1960		3168
		3169	EV_FREQUENT_CHECK;
		3170
1961	ev_start (EV_A_ (W)w, 1);	3171	ev_start (EV_A_ (W)w, 1);
1962	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3172	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
		3173
		3174	EV_FREQUENT_CHECK;
1963	}	3175	}
1964		3176
1965	void	3177	void
1966	ev_child_stop (EV_P_ ev_child *w)	3178	ev_child_stop (EV_P_ ev_child *w)
1967	{	3179	{
1968	clear_pending (EV_A_ (W)w);	3180	clear_pending (EV_A_ (W)w);
1969	if (expect_false (!ev_is_active (w)))	3181	if (expect_false (!ev_is_active (w)))
1970	return;	3182	return;
1971		3183
		3184	EV_FREQUENT_CHECK;
		3185
1972	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3186	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1973	ev_stop (EV_A_ (W)w);	3187	ev_stop (EV_A_ (W)w);
		3188
		3189	EV_FREQUENT_CHECK;
1974	}	3190	}
		3191
		3192	#endif
1975		3193
1976	#if EV_STAT_ENABLE	3194	#if EV_STAT_ENABLE
1977		3195
1978	# ifdef _WIN32	3196	# ifdef _WIN32
1979	# undef lstat	3197	# undef lstat
1980	# define lstat(a,b) _stati64 (a,b)	3198	# define lstat(a,b) _stati64 (a,b)
1981	# endif	3199	# endif
1982		3200
1983	#define DEF_STAT_INTERVAL 5.0074891	3201	#define DEF_STAT_INTERVAL 5.0074891
		3202	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1984	#define MIN_STAT_INTERVAL 0.1074891	3203	#define MIN_STAT_INTERVAL 0.1074891
1985		3204
1986	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	3205	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1987		3206
1988	#if EV_USE_INOTIFY	3207	#if EV_USE_INOTIFY
1989	# define EV_INOTIFY_BUFSIZE 8192	3208
		3209	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		3210	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1990		3211
1991	static void noinline	3212	static void noinline
1992	infy_add (EV_P_ ev_stat *w)	3213	infy_add (EV_P_ ev_stat *w)
1993	{	3214	{
1994	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);	3215	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);
1995		3216
1996	if (w->wd < 0)	3217	if (w->wd >= 0)
		3218	{
		3219	struct statfs sfs;
		3220
		3221	/* now local changes will be tracked by inotify, but remote changes won't */
		3222	/* unless the filesystem is known to be local, we therefore still poll */
		3223	/* also do poll on <2.6.25, but with normal frequency */
		3224
		3225	if (!fs_2625)
		3226	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3227	else if (!statfs (w->path, &sfs)
		3228	&& (sfs.f_type == 0x1373 /* devfs */
		3229	|| sfs.f_type == 0xEF53 /* ext2/3 */
		3230	|| sfs.f_type == 0x3153464a /* jfs */
		3231	|| sfs.f_type == 0x52654973 /* reiser3 */
		3232	|| sfs.f_type == 0x01021994 /* tempfs */
		3233	|| sfs.f_type == 0x58465342 /* xfs */))
		3234	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		3235	else
		3236	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
1997	{	3237	}
1998	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	3238	else
		3239	{
		3240	/* can't use inotify, continue to stat */
		3241	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
1999		3242
2000	/* monitor some parent directory for speedup hints */	3243	/* if path is not there, monitor some parent directory for speedup hints */
		3244	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		3245	/* but an efficiency issue only */
2001	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	3246	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2002	{	3247	{
2003	char path [4096];	3248	char path [4096];
2004	strcpy (path, w->path);	3249	strcpy (path, w->path);
2005		3250
…		…
2008	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	3253	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2009	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	3254	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2010		3255
2011	char *pend = strrchr (path, '/');	3256	char *pend = strrchr (path, '/');
2012		3257
2013	if (!pend)	3258	if (!pend || pend == path)
2014	break; /* whoops, no '/', complain to your admin */	3259	break;
2015		3260
2016	*pend = 0;	3261	*pend = 0;
2017	w->wd = inotify_add_watch (fs_fd, path, mask);	3262	w->wd = inotify_add_watch (fs_fd, path, mask);
2018	}	3263	}
2019	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3264	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2020	}	3265	}
2021	}	3266	}
2022	else
2023	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2024		3267
2025	if (w->wd >= 0)	3268	if (w->wd >= 0)
2026	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3269	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
		3270
		3271	/* now re-arm timer, if required */
		3272	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		3273	ev_timer_again (EV_A_ &w->timer);
		3274	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2027	}	3275	}
2028		3276
2029	static void noinline	3277	static void noinline
2030	infy_del (EV_P_ ev_stat *w)	3278	infy_del (EV_P_ ev_stat *w)
2031	{	3279	{
…		…
2034		3282
2035	if (wd < 0)	3283	if (wd < 0)
2036	return;	3284	return;
2037		3285
2038	w->wd = -2;	3286	w->wd = -2;
2039	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3287	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2040	wlist_del (&fs_hash [slot].head, (WL)w);	3288	wlist_del (&fs_hash [slot].head, (WL)w);
2041		3289
2042	/* remove this watcher, if others are watching it, they will rearm */	3290	/* remove this watcher, if others are watching it, they will rearm */
2043	inotify_rm_watch (fs_fd, wd);	3291	inotify_rm_watch (fs_fd, wd);
2044	}	3292	}
2045		3293
2046	static void noinline	3294	static void noinline
2047	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3295	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2048	{	3296	{
2049	if (slot < 0)	3297	if (slot < 0)
2050	/* overflow, need to check for all hahs slots */	3298	/* overflow, need to check for all hash slots */
2051	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3299	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2052	infy_wd (EV_A_ slot, wd, ev);	3300	infy_wd (EV_A_ slot, wd, ev);
2053	else	3301	else
2054	{	3302	{
2055	WL w_;	3303	WL w_;
2056		3304
2057	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3305	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2058	{	3306	{
2059	ev_stat *w = (ev_stat *)w_;	3307	ev_stat *w = (ev_stat *)w_;
2060	w_ = w_->next; /* lets us remove this watcher and all before it */	3308	w_ = w_->next; /* lets us remove this watcher and all before it */
2061		3309
2062	if (w->wd == wd || wd == -1)	3310	if (w->wd == wd || wd == -1)
2063	{	3311	{
2064	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3312	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2065	{	3313	{
		3314	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2066	w->wd = -1;	3315	w->wd = -1;
2067	infy_add (EV_A_ w); /* re-add, no matter what */	3316	infy_add (EV_A_ w); /* re-add, no matter what */
2068	}	3317	}
2069		3318
2070	stat_timer_cb (EV_A_ &w->timer, 0);	3319	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2075		3324
2076	static void	3325	static void
2077	infy_cb (EV_P_ ev_io *w, int revents)	3326	infy_cb (EV_P_ ev_io *w, int revents)
2078	{	3327	{
2079	char buf [EV_INOTIFY_BUFSIZE];	3328	char buf [EV_INOTIFY_BUFSIZE];
2080	struct inotify_event *ev = (struct inotify_event *)buf;
2081	int ofs;	3329	int ofs;
2082	int len = read (fs_fd, buf, sizeof (buf));	3330	int len = read (fs_fd, buf, sizeof (buf));
2083		3331
2084	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3332	for (ofs = 0; ofs < len; )
		3333	{
		3334	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2085	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3335	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3336	ofs += sizeof (struct inotify_event) + ev->len;
		3337	}
2086	}	3338	}
2087		3339
2088	void inline_size	3340	inline_size void ecb_cold
		3341	ev_check_2625 (EV_P)
		3342	{
		3343	/* kernels < 2.6.25 are borked
		3344	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3345	*/
		3346	if (ev_linux_version () < 0x020619)
		3347	return;
		3348
		3349	fs_2625 = 1;
		3350	}
		3351
		3352	inline_size int
		3353	infy_newfd (void)
		3354	{
		3355	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3356	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3357	if (fd >= 0)
		3358	return fd;
		3359	#endif
		3360	return inotify_init ();
		3361	}
		3362
		3363	inline_size void
2089	infy_init (EV_P)	3364	infy_init (EV_P)
2090	{	3365	{
2091	if (fs_fd != -2)	3366	if (fs_fd != -2)
2092	return;	3367	return;
2093		3368
		3369	fs_fd = -1;
		3370
		3371	ev_check_2625 (EV_A);
		3372
2094	fs_fd = inotify_init ();	3373	fs_fd = infy_newfd ();
2095		3374
2096	if (fs_fd >= 0)	3375	if (fs_fd >= 0)
2097	{	3376	{
		3377	fd_intern (fs_fd);
2098	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3378	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2099	ev_set_priority (&fs_w, EV_MAXPRI);	3379	ev_set_priority (&fs_w, EV_MAXPRI);
2100	ev_io_start (EV_A_ &fs_w);	3380	ev_io_start (EV_A_ &fs_w);
		3381	ev_unref (EV_A);
2101	}	3382	}
2102	}	3383	}
2103		3384
2104	void inline_size	3385	inline_size void
2105	infy_fork (EV_P)	3386	infy_fork (EV_P)
2106	{	3387	{
2107	int slot;	3388	int slot;
2108		3389
2109	if (fs_fd < 0)	3390	if (fs_fd < 0)
2110	return;	3391	return;
2111		3392
		3393	ev_ref (EV_A);
		3394	ev_io_stop (EV_A_ &fs_w);
2112	close (fs_fd);	3395	close (fs_fd);
2113	fs_fd = inotify_init ();	3396	fs_fd = infy_newfd ();
2114		3397
		3398	if (fs_fd >= 0)
		3399	{
		3400	fd_intern (fs_fd);
		3401	ev_io_set (&fs_w, fs_fd, EV_READ);
		3402	ev_io_start (EV_A_ &fs_w);
		3403	ev_unref (EV_A);
		3404	}
		3405
2115	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3406	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2116	{	3407	{
2117	WL w_ = fs_hash [slot].head;	3408	WL w_ = fs_hash [slot].head;
2118	fs_hash [slot].head = 0;	3409	fs_hash [slot].head = 0;
2119		3410
2120	while (w_)	3411	while (w_)
…		…
2125	w->wd = -1;	3416	w->wd = -1;
2126		3417
2127	if (fs_fd >= 0)	3418	if (fs_fd >= 0)
2128	infy_add (EV_A_ w); /* re-add, no matter what */	3419	infy_add (EV_A_ w); /* re-add, no matter what */
2129	else	3420	else
		3421	{
		3422	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3423	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2130	ev_timer_start (EV_A_ &w->timer);	3424	ev_timer_again (EV_A_ &w->timer);
		3425	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3426	}
2131	}	3427	}
2132
2133	}	3428	}
2134	}	3429	}
2135		3430
		3431	#endif
		3432
		3433	#ifdef _WIN32
		3434	# define EV_LSTAT(p,b) _stati64 (p, b)
		3435	#else
		3436	# define EV_LSTAT(p,b) lstat (p, b)
2136	#endif	3437	#endif
2137		3438
2138	void	3439	void
2139	ev_stat_stat (EV_P_ ev_stat *w)	3440	ev_stat_stat (EV_P_ ev_stat *w)
2140	{	3441	{
…		…
2147	static void noinline	3448	static void noinline
2148	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3449	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2149	{	3450	{
2150	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3451	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2151		3452
2152	/* we copy this here each the time so that */	3453	ev_statdata prev = w->attr;
2153	/* prev has the old value when the callback gets invoked */
2154	w->prev = w->attr;
2155	ev_stat_stat (EV_A_ w);	3454	ev_stat_stat (EV_A_ w);
2156		3455
2157	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3456	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2158	if (	3457	if (
2159	w->prev.st_dev != w->attr.st_dev	3458	prev.st_dev != w->attr.st_dev
2160	|| w->prev.st_ino != w->attr.st_ino	3459	|| prev.st_ino != w->attr.st_ino
2161	|| w->prev.st_mode != w->attr.st_mode	3460	|| prev.st_mode != w->attr.st_mode
2162	|| w->prev.st_nlink != w->attr.st_nlink	3461	|| prev.st_nlink != w->attr.st_nlink
2163	|| w->prev.st_uid != w->attr.st_uid	3462	|| prev.st_uid != w->attr.st_uid
2164	|| w->prev.st_gid != w->attr.st_gid	3463	|| prev.st_gid != w->attr.st_gid
2165	|| w->prev.st_rdev != w->attr.st_rdev	3464	|| prev.st_rdev != w->attr.st_rdev
2166	|| w->prev.st_size != w->attr.st_size	3465	|| prev.st_size != w->attr.st_size
2167	|| w->prev.st_atime != w->attr.st_atime	3466	|| prev.st_atime != w->attr.st_atime
2168	|| w->prev.st_mtime != w->attr.st_mtime	3467	|| prev.st_mtime != w->attr.st_mtime
2169	|| w->prev.st_ctime != w->attr.st_ctime	3468	|| prev.st_ctime != w->attr.st_ctime
2170	) {	3469	) {
		3470	/* we only update w->prev on actual differences */
		3471	/* in case we test more often than invoke the callback, */
		3472	/* to ensure that prev is always different to attr */
		3473	w->prev = prev;
		3474
2171	#if EV_USE_INOTIFY	3475	#if EV_USE_INOTIFY
		3476	if (fs_fd >= 0)
		3477	{
2172	infy_del (EV_A_ w);	3478	infy_del (EV_A_ w);
2173	infy_add (EV_A_ w);	3479	infy_add (EV_A_ w);
2174	ev_stat_stat (EV_A_ w); /* avoid race... */	3480	ev_stat_stat (EV_A_ w); /* avoid race... */
		3481	}
2175	#endif	3482	#endif
2176		3483
2177	ev_feed_event (EV_A_ w, EV_STAT);	3484	ev_feed_event (EV_A_ w, EV_STAT);
2178	}	3485	}
2179	}	3486	}
…		…
2182	ev_stat_start (EV_P_ ev_stat *w)	3489	ev_stat_start (EV_P_ ev_stat *w)
2183	{	3490	{
2184	if (expect_false (ev_is_active (w)))	3491	if (expect_false (ev_is_active (w)))
2185	return;	3492	return;
2186		3493
2187	/* since we use memcmp, we need to clear any padding data etc. */
2188	memset (&w->prev, 0, sizeof (ev_statdata));
2189	memset (&w->attr, 0, sizeof (ev_statdata));
2190
2191	ev_stat_stat (EV_A_ w);	3494	ev_stat_stat (EV_A_ w);
2192		3495
		3496	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2193	if (w->interval < MIN_STAT_INTERVAL)	3497	w->interval = MIN_STAT_INTERVAL;
2194	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2195		3498
2196	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3499	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2197	ev_set_priority (&w->timer, ev_priority (w));	3500	ev_set_priority (&w->timer, ev_priority (w));
2198		3501
2199	#if EV_USE_INOTIFY	3502	#if EV_USE_INOTIFY
2200	infy_init (EV_A);	3503	infy_init (EV_A);
2201		3504
2202	if (fs_fd >= 0)	3505	if (fs_fd >= 0)
2203	infy_add (EV_A_ w);	3506	infy_add (EV_A_ w);
2204	else	3507	else
2205	#endif	3508	#endif
		3509	{
2206	ev_timer_start (EV_A_ &w->timer);	3510	ev_timer_again (EV_A_ &w->timer);
		3511	ev_unref (EV_A);
		3512	}
2207		3513
2208	ev_start (EV_A_ (W)w, 1);	3514	ev_start (EV_A_ (W)w, 1);
		3515
		3516	EV_FREQUENT_CHECK;
2209	}	3517	}
2210		3518
2211	void	3519	void
2212	ev_stat_stop (EV_P_ ev_stat *w)	3520	ev_stat_stop (EV_P_ ev_stat *w)
2213	{	3521	{
2214	clear_pending (EV_A_ (W)w);	3522	clear_pending (EV_A_ (W)w);
2215	if (expect_false (!ev_is_active (w)))	3523	if (expect_false (!ev_is_active (w)))
2216	return;	3524	return;
2217		3525
		3526	EV_FREQUENT_CHECK;
		3527
2218	#if EV_USE_INOTIFY	3528	#if EV_USE_INOTIFY
2219	infy_del (EV_A_ w);	3529	infy_del (EV_A_ w);
2220	#endif	3530	#endif
		3531
		3532	if (ev_is_active (&w->timer))
		3533	{
		3534	ev_ref (EV_A);
2221	ev_timer_stop (EV_A_ &w->timer);	3535	ev_timer_stop (EV_A_ &w->timer);
		3536	}
2222		3537
2223	ev_stop (EV_A_ (W)w);	3538	ev_stop (EV_A_ (W)w);
		3539
		3540	EV_FREQUENT_CHECK;
2224	}	3541	}
2225	#endif	3542	#endif
2226		3543
2227	#if EV_IDLE_ENABLE	3544	#if EV_IDLE_ENABLE
2228	void	3545	void
…		…
2231	if (expect_false (ev_is_active (w)))	3548	if (expect_false (ev_is_active (w)))
2232	return;	3549	return;
2233		3550
2234	pri_adjust (EV_A_ (W)w);	3551	pri_adjust (EV_A_ (W)w);
2235		3552
		3553	EV_FREQUENT_CHECK;
		3554
2236	{	3555	{
2237	int active = ++idlecnt [ABSPRI (w)];	3556	int active = ++idlecnt [ABSPRI (w)];
2238		3557
2239	++idleall;	3558	++idleall;
2240	ev_start (EV_A_ (W)w, active);	3559	ev_start (EV_A_ (W)w, active);
2241		3560
2242	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3561	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2243	idles [ABSPRI (w)][active - 1] = w;	3562	idles [ABSPRI (w)][active - 1] = w;
2244	}	3563	}
		3564
		3565	EV_FREQUENT_CHECK;
2245	}	3566	}
2246		3567
2247	void	3568	void
2248	ev_idle_stop (EV_P_ ev_idle *w)	3569	ev_idle_stop (EV_P_ ev_idle *w)
2249	{	3570	{
2250	clear_pending (EV_A_ (W)w);	3571	clear_pending (EV_A_ (W)w);
2251	if (expect_false (!ev_is_active (w)))	3572	if (expect_false (!ev_is_active (w)))
2252	return;	3573	return;
2253		3574
		3575	EV_FREQUENT_CHECK;
		3576
2254	{	3577	{
2255	int active = ((W)w)->active;	3578	int active = ev_active (w);
2256		3579
2257	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3580	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2258	((W)idles [ABSPRI (w)][active - 1])->active = active;	3581	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2259		3582
2260	ev_stop (EV_A_ (W)w);	3583	ev_stop (EV_A_ (W)w);
2261	--idleall;	3584	--idleall;
2262	}	3585	}
2263	}
2264	#endif
2265		3586
		3587	EV_FREQUENT_CHECK;
		3588	}
		3589	#endif
		3590
		3591	#if EV_PREPARE_ENABLE
2266	void	3592	void
2267	ev_prepare_start (EV_P_ ev_prepare *w)	3593	ev_prepare_start (EV_P_ ev_prepare *w)
2268	{	3594	{
2269	if (expect_false (ev_is_active (w)))	3595	if (expect_false (ev_is_active (w)))
2270	return;	3596	return;
		3597
		3598	EV_FREQUENT_CHECK;
2271		3599
2272	ev_start (EV_A_ (W)w, ++preparecnt);	3600	ev_start (EV_A_ (W)w, ++preparecnt);
2273	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3601	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2274	prepares [preparecnt - 1] = w;	3602	prepares [preparecnt - 1] = w;
		3603
		3604	EV_FREQUENT_CHECK;
2275	}	3605	}
2276		3606
2277	void	3607	void
2278	ev_prepare_stop (EV_P_ ev_prepare *w)	3608	ev_prepare_stop (EV_P_ ev_prepare *w)
2279	{	3609	{
2280	clear_pending (EV_A_ (W)w);	3610	clear_pending (EV_A_ (W)w);
2281	if (expect_false (!ev_is_active (w)))	3611	if (expect_false (!ev_is_active (w)))
2282	return;	3612	return;
2283		3613
		3614	EV_FREQUENT_CHECK;
		3615
2284	{	3616	{
2285	int active = ((W)w)->active;	3617	int active = ev_active (w);
		3618
2286	prepares [active - 1] = prepares [--preparecnt];	3619	prepares [active - 1] = prepares [--preparecnt];
2287	((W)prepares [active - 1])->active = active;	3620	ev_active (prepares [active - 1]) = active;
2288	}	3621	}
2289		3622
2290	ev_stop (EV_A_ (W)w);	3623	ev_stop (EV_A_ (W)w);
2291	}
2292		3624
		3625	EV_FREQUENT_CHECK;
		3626	}
		3627	#endif
		3628
		3629	#if EV_CHECK_ENABLE
2293	void	3630	void
2294	ev_check_start (EV_P_ ev_check *w)	3631	ev_check_start (EV_P_ ev_check *w)
2295	{	3632	{
2296	if (expect_false (ev_is_active (w)))	3633	if (expect_false (ev_is_active (w)))
2297	return;	3634	return;
		3635
		3636	EV_FREQUENT_CHECK;
2298		3637
2299	ev_start (EV_A_ (W)w, ++checkcnt);	3638	ev_start (EV_A_ (W)w, ++checkcnt);
2300	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3639	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2301	checks [checkcnt - 1] = w;	3640	checks [checkcnt - 1] = w;
		3641
		3642	EV_FREQUENT_CHECK;
2302	}	3643	}
2303		3644
2304	void	3645	void
2305	ev_check_stop (EV_P_ ev_check *w)	3646	ev_check_stop (EV_P_ ev_check *w)
2306	{	3647	{
2307	clear_pending (EV_A_ (W)w);	3648	clear_pending (EV_A_ (W)w);
2308	if (expect_false (!ev_is_active (w)))	3649	if (expect_false (!ev_is_active (w)))
2309	return;	3650	return;
2310		3651
		3652	EV_FREQUENT_CHECK;
		3653
2311	{	3654	{
2312	int active = ((W)w)->active;	3655	int active = ev_active (w);
		3656
2313	checks [active - 1] = checks [--checkcnt];	3657	checks [active - 1] = checks [--checkcnt];
2314	((W)checks [active - 1])->active = active;	3658	ev_active (checks [active - 1]) = active;
2315	}	3659	}
2316		3660
2317	ev_stop (EV_A_ (W)w);	3661	ev_stop (EV_A_ (W)w);
		3662
		3663	EV_FREQUENT_CHECK;
2318	}	3664	}
		3665	#endif
2319		3666
2320	#if EV_EMBED_ENABLE	3667	#if EV_EMBED_ENABLE
2321	void noinline	3668	void noinline
2322	ev_embed_sweep (EV_P_ ev_embed *w)	3669	ev_embed_sweep (EV_P_ ev_embed *w)
2323	{	3670	{
2324	ev_loop (w->other, EVLOOP_NONBLOCK);	3671	ev_run (w->other, EVRUN_NOWAIT);
2325	}	3672	}
2326		3673
2327	static void	3674	static void
2328	embed_io_cb (EV_P_ ev_io *io, int revents)	3675	embed_io_cb (EV_P_ ev_io *io, int revents)
2329	{	3676	{
2330	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3677	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2331		3678
2332	if (ev_cb (w))	3679	if (ev_cb (w))
2333	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3680	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2334	else	3681	else
2335	ev_loop (w->other, EVLOOP_NONBLOCK);	3682	ev_run (w->other, EVRUN_NOWAIT);
2336	}	3683	}
2337		3684
2338	static void	3685	static void
2339	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3686	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2340	{	3687	{
2341	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3688	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2342		3689
2343	{	3690	{
2344	struct ev_loop *loop = w->other;	3691	EV_P = w->other;
2345		3692
2346	while (fdchangecnt)	3693	while (fdchangecnt)
2347	{	3694	{
2348	fd_reify (EV_A);	3695	fd_reify (EV_A);
2349	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3696	ev_run (EV_A_ EVRUN_NOWAIT);
2350	}	3697	}
2351	}	3698	}
		3699	}
		3700
		3701	static void
		3702	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3703	{
		3704	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3705
		3706	ev_embed_stop (EV_A_ w);
		3707
		3708	{
		3709	EV_P = w->other;
		3710
		3711	ev_loop_fork (EV_A);
		3712	ev_run (EV_A_ EVRUN_NOWAIT);
		3713	}
		3714
		3715	ev_embed_start (EV_A_ w);
2352	}	3716	}
2353		3717
2354	#if 0	3718	#if 0
2355	static void	3719	static void
2356	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3720	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2364	{	3728	{
2365	if (expect_false (ev_is_active (w)))	3729	if (expect_false (ev_is_active (w)))
2366	return;	3730	return;
2367		3731
2368	{	3732	{
2369	struct ev_loop *loop = w->other;	3733	EV_P = w->other;
2370	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3734	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2371	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3735	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2372	}	3736	}
		3737
		3738	EV_FREQUENT_CHECK;
2373		3739
2374	ev_set_priority (&w->io, ev_priority (w));	3740	ev_set_priority (&w->io, ev_priority (w));
2375	ev_io_start (EV_A_ &w->io);	3741	ev_io_start (EV_A_ &w->io);
2376		3742
2377	ev_prepare_init (&w->prepare, embed_prepare_cb);	3743	ev_prepare_init (&w->prepare, embed_prepare_cb);
2378	ev_set_priority (&w->prepare, EV_MINPRI);	3744	ev_set_priority (&w->prepare, EV_MINPRI);
2379	ev_prepare_start (EV_A_ &w->prepare);	3745	ev_prepare_start (EV_A_ &w->prepare);
2380		3746
		3747	ev_fork_init (&w->fork, embed_fork_cb);
		3748	ev_fork_start (EV_A_ &w->fork);
		3749
2381	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3750	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2382		3751
2383	ev_start (EV_A_ (W)w, 1);	3752	ev_start (EV_A_ (W)w, 1);
		3753
		3754	EV_FREQUENT_CHECK;
2384	}	3755	}
2385		3756
2386	void	3757	void
2387	ev_embed_stop (EV_P_ ev_embed *w)	3758	ev_embed_stop (EV_P_ ev_embed *w)
2388	{	3759	{
2389	clear_pending (EV_A_ (W)w);	3760	clear_pending (EV_A_ (W)w);
2390	if (expect_false (!ev_is_active (w)))	3761	if (expect_false (!ev_is_active (w)))
2391	return;	3762	return;
2392		3763
		3764	EV_FREQUENT_CHECK;
		3765
2393	ev_io_stop (EV_A_ &w->io);	3766	ev_io_stop (EV_A_ &w->io);
2394	ev_prepare_stop (EV_A_ &w->prepare);	3767	ev_prepare_stop (EV_A_ &w->prepare);
		3768	ev_fork_stop (EV_A_ &w->fork);
2395		3769
2396	ev_stop (EV_A_ (W)w);	3770	ev_stop (EV_A_ (W)w);
		3771
		3772	EV_FREQUENT_CHECK;
2397	}	3773	}
2398	#endif	3774	#endif
2399		3775
2400	#if EV_FORK_ENABLE	3776	#if EV_FORK_ENABLE
2401	void	3777	void
2402	ev_fork_start (EV_P_ ev_fork *w)	3778	ev_fork_start (EV_P_ ev_fork *w)
2403	{	3779	{
2404	if (expect_false (ev_is_active (w)))	3780	if (expect_false (ev_is_active (w)))
2405	return;	3781	return;
2406		3782
		3783	EV_FREQUENT_CHECK;
		3784
2407	ev_start (EV_A_ (W)w, ++forkcnt);	3785	ev_start (EV_A_ (W)w, ++forkcnt);
2408	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3786	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2409	forks [forkcnt - 1] = w;	3787	forks [forkcnt - 1] = w;
		3788
		3789	EV_FREQUENT_CHECK;
2410	}	3790	}
2411		3791
2412	void	3792	void
2413	ev_fork_stop (EV_P_ ev_fork *w)	3793	ev_fork_stop (EV_P_ ev_fork *w)
2414	{	3794	{
2415	clear_pending (EV_A_ (W)w);	3795	clear_pending (EV_A_ (W)w);
2416	if (expect_false (!ev_is_active (w)))	3796	if (expect_false (!ev_is_active (w)))
2417	return;	3797	return;
2418		3798
		3799	EV_FREQUENT_CHECK;
		3800
2419	{	3801	{
2420	int active = ((W)w)->active;	3802	int active = ev_active (w);
		3803
2421	forks [active - 1] = forks [--forkcnt];	3804	forks [active - 1] = forks [--forkcnt];
2422	((W)forks [active - 1])->active = active;	3805	ev_active (forks [active - 1]) = active;
2423	}	3806	}
2424		3807
2425	ev_stop (EV_A_ (W)w);	3808	ev_stop (EV_A_ (W)w);
		3809
		3810	EV_FREQUENT_CHECK;
		3811	}
		3812	#endif
		3813
		3814	#if EV_CLEANUP_ENABLE
		3815	void
		3816	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3817	{
		3818	if (expect_false (ev_is_active (w)))
		3819	return;
		3820
		3821	EV_FREQUENT_CHECK;
		3822
		3823	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3824	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3825	cleanups [cleanupcnt - 1] = w;
		3826
		3827	/* cleanup watchers should never keep a refcount on the loop */
		3828	ev_unref (EV_A);
		3829	EV_FREQUENT_CHECK;
		3830	}
		3831
		3832	void
		3833	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3834	{
		3835	clear_pending (EV_A_ (W)w);
		3836	if (expect_false (!ev_is_active (w)))
		3837	return;
		3838
		3839	EV_FREQUENT_CHECK;
		3840	ev_ref (EV_A);
		3841
		3842	{
		3843	int active = ev_active (w);
		3844
		3845	cleanups [active - 1] = cleanups [--cleanupcnt];
		3846	ev_active (cleanups [active - 1]) = active;
		3847	}
		3848
		3849	ev_stop (EV_A_ (W)w);
		3850
		3851	EV_FREQUENT_CHECK;
2426	}	3852	}
2427	#endif	3853	#endif
2428		3854
2429	#if EV_ASYNC_ENABLE	3855	#if EV_ASYNC_ENABLE
2430	void	3856	void
2431	ev_async_start (EV_P_ ev_async *w)	3857	ev_async_start (EV_P_ ev_async *w)
2432	{	3858	{
2433	if (expect_false (ev_is_active (w)))	3859	if (expect_false (ev_is_active (w)))
2434	return;	3860	return;
2435		3861
		3862	w->sent = 0;
		3863
2436	evpipe_init (EV_A);	3864	evpipe_init (EV_A);
		3865
		3866	EV_FREQUENT_CHECK;
2437		3867
2438	ev_start (EV_A_ (W)w, ++asynccnt);	3868	ev_start (EV_A_ (W)w, ++asynccnt);
2439	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3869	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2440	asyncs [asynccnt - 1] = w;	3870	asyncs [asynccnt - 1] = w;
		3871
		3872	EV_FREQUENT_CHECK;
2441	}	3873	}
2442		3874
2443	void	3875	void
2444	ev_async_stop (EV_P_ ev_async *w)	3876	ev_async_stop (EV_P_ ev_async *w)
2445	{	3877	{
2446	clear_pending (EV_A_ (W)w);	3878	clear_pending (EV_A_ (W)w);
2447	if (expect_false (!ev_is_active (w)))	3879	if (expect_false (!ev_is_active (w)))
2448	return;	3880	return;
2449		3881
		3882	EV_FREQUENT_CHECK;
		3883
2450	{	3884	{
2451	int active = ((W)w)->active;	3885	int active = ev_active (w);
		3886
2452	asyncs [active - 1] = asyncs [--asynccnt];	3887	asyncs [active - 1] = asyncs [--asynccnt];
2453	((W)asyncs [active - 1])->active = active;	3888	ev_active (asyncs [active - 1]) = active;
2454	}	3889	}
2455		3890
2456	ev_stop (EV_A_ (W)w);	3891	ev_stop (EV_A_ (W)w);
		3892
		3893	EV_FREQUENT_CHECK;
2457	}	3894	}
2458		3895
2459	void	3896	void
2460	ev_async_send (EV_P_ ev_async *w)	3897	ev_async_send (EV_P_ ev_async *w)
2461	{	3898	{
2462	w->sent = 1;	3899	w->sent = 1;
2463	evpipe_write (EV_A_ 0, 1);	3900	evpipe_write (EV_A_ &async_pending);
2464	}	3901	}
2465	#endif	3902	#endif
2466		3903
2467	/*****************************************************************************/	3904	/*****************************************************************************/
2468		3905
…		…
2478	once_cb (EV_P_ struct ev_once *once, int revents)	3915	once_cb (EV_P_ struct ev_once *once, int revents)
2479	{	3916	{
2480	void (*cb)(int revents, void *arg) = once->cb;	3917	void (*cb)(int revents, void *arg) = once->cb;
2481	void *arg = once->arg;	3918	void *arg = once->arg;
2482		3919
2483	ev_io_stop (EV_A_ &once->io);	3920	ev_io_stop (EV_A_ &once->io);
2484	ev_timer_stop (EV_A_ &once->to);	3921	ev_timer_stop (EV_A_ &once->to);
2485	ev_free (once);	3922	ev_free (once);
2486		3923
2487	cb (revents, arg);	3924	cb (revents, arg);
2488	}	3925	}
2489		3926
2490	static void	3927	static void
2491	once_cb_io (EV_P_ ev_io *w, int revents)	3928	once_cb_io (EV_P_ ev_io *w, int revents)
2492	{	3929	{
2493	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3930	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3931
		3932	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2494	}	3933	}
2495		3934
2496	static void	3935	static void
2497	once_cb_to (EV_P_ ev_timer *w, int revents)	3936	once_cb_to (EV_P_ ev_timer *w, int revents)
2498	{	3937	{
2499	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3938	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3939
		3940	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2500	}	3941	}
2501		3942
2502	void	3943	void
2503	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3944	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2504	{	3945	{
2505	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3946	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2506		3947
2507	if (expect_false (!once))	3948	if (expect_false (!once))
2508	{	3949	{
2509	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3950	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2510	return;	3951	return;
2511	}	3952	}
2512		3953
2513	once->cb = cb;	3954	once->cb = cb;
2514	once->arg = arg;	3955	once->arg = arg;
…		…
2526	ev_timer_set (&once->to, timeout, 0.);	3967	ev_timer_set (&once->to, timeout, 0.);
2527	ev_timer_start (EV_A_ &once->to);	3968	ev_timer_start (EV_A_ &once->to);
2528	}	3969	}
2529	}	3970	}
2530		3971
		3972	/*****************************************************************************/
		3973
		3974	#if EV_WALK_ENABLE
		3975	void ecb_cold
		3976	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3977	{
		3978	int i, j;
		3979	ev_watcher_list *wl, *wn;
		3980
		3981	if (types & (EV_IO | EV_EMBED))
		3982	for (i = 0; i < anfdmax; ++i)
		3983	for (wl = anfds [i].head; wl; )
		3984	{
		3985	wn = wl->next;
		3986
		3987	#if EV_EMBED_ENABLE
		3988	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3989	{
		3990	if (types & EV_EMBED)
		3991	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3992	}
		3993	else
		3994	#endif
		3995	#if EV_USE_INOTIFY
		3996	if (ev_cb ((ev_io *)wl) == infy_cb)
		3997	;
		3998	else
		3999	#endif
		4000	if ((ev_io *)wl != &pipe_w)
		4001	if (types & EV_IO)
		4002	cb (EV_A_ EV_IO, wl);
		4003
		4004	wl = wn;
		4005	}
		4006
		4007	if (types & (EV_TIMER | EV_STAT))
		4008	for (i = timercnt + HEAP0; i-- > HEAP0; )
		4009	#if EV_STAT_ENABLE
		4010	/*TODO: timer is not always active*/
		4011	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		4012	{
		4013	if (types & EV_STAT)
		4014	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		4015	}
		4016	else
		4017	#endif
		4018	if (types & EV_TIMER)
		4019	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		4020
		4021	#if EV_PERIODIC_ENABLE
		4022	if (types & EV_PERIODIC)
		4023	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		4024	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		4025	#endif
		4026
		4027	#if EV_IDLE_ENABLE
		4028	if (types & EV_IDLE)
		4029	for (j = NUMPRI; i--; )
		4030	for (i = idlecnt [j]; i--; )
		4031	cb (EV_A_ EV_IDLE, idles [j][i]);
		4032	#endif
		4033
		4034	#if EV_FORK_ENABLE
		4035	if (types & EV_FORK)
		4036	for (i = forkcnt; i--; )
		4037	if (ev_cb (forks [i]) != embed_fork_cb)
		4038	cb (EV_A_ EV_FORK, forks [i]);
		4039	#endif
		4040
		4041	#if EV_ASYNC_ENABLE
		4042	if (types & EV_ASYNC)
		4043	for (i = asynccnt; i--; )
		4044	cb (EV_A_ EV_ASYNC, asyncs [i]);
		4045	#endif
		4046
		4047	#if EV_PREPARE_ENABLE
		4048	if (types & EV_PREPARE)
		4049	for (i = preparecnt; i--; )
		4050	# if EV_EMBED_ENABLE
		4051	if (ev_cb (prepares [i]) != embed_prepare_cb)
		4052	# endif
		4053	cb (EV_A_ EV_PREPARE, prepares [i]);
		4054	#endif
		4055
		4056	#if EV_CHECK_ENABLE
		4057	if (types & EV_CHECK)
		4058	for (i = checkcnt; i--; )
		4059	cb (EV_A_ EV_CHECK, checks [i]);
		4060	#endif
		4061
		4062	#if EV_SIGNAL_ENABLE
		4063	if (types & EV_SIGNAL)
		4064	for (i = 0; i < EV_NSIG - 1; ++i)
		4065	for (wl = signals [i].head; wl; )
		4066	{
		4067	wn = wl->next;
		4068	cb (EV_A_ EV_SIGNAL, wl);
		4069	wl = wn;
		4070	}
		4071	#endif
		4072
		4073	#if EV_CHILD_ENABLE
		4074	if (types & EV_CHILD)
		4075	for (i = (EV_PID_HASHSIZE); i--; )
		4076	for (wl = childs [i]; wl; )
		4077	{
		4078	wn = wl->next;
		4079	cb (EV_A_ EV_CHILD, wl);
		4080	wl = wn;
		4081	}
		4082	#endif
		4083	/* EV_STAT 0x00001000 /* stat data changed */
		4084	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		4085	}
		4086	#endif
		4087
2531	#if EV_MULTIPLICITY	4088	#if EV_MULTIPLICITY
2532	#include "ev_wrap.h"	4089	#include "ev_wrap.h"
2533	#endif	4090	#endif
2534		4091
2535	#ifdef __cplusplus	4092	EV_CPP(})
2536	}
2537	#endif
2538		4093

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